diff options
Diffstat (limited to 'drivers/infiniband/hw/ipath')
38 files changed, 6046 insertions, 4893 deletions
diff --git a/drivers/infiniband/hw/ipath/Kconfig b/drivers/infiniband/hw/ipath/Kconfig index 9ea67c409b6d..574a678e7fdd 100644 --- a/drivers/infiniband/hw/ipath/Kconfig +++ b/drivers/infiniband/hw/ipath/Kconfig @@ -1,16 +1,9 @@ -config IPATH_CORE - tristate "PathScale InfiniPath Driver" - depends on 64BIT && PCI_MSI && NET - ---help--- - This is a low-level driver for PathScale InfiniPath host channel - adapters (HCAs) based on the HT-400 and PE-800 chips. - config INFINIBAND_IPATH - tristate "PathScale InfiniPath Verbs Driver" - depends on IPATH_CORE && INFINIBAND + tristate "QLogic InfiniPath Driver" + depends on PCI_MSI && 64BIT && INFINIBAND ---help--- - This is a driver that provides InfiniBand verbs support for - PathScale InfiniPath host channel adapters (HCAs). This - allows these devices to be used with both kernel upper level - protocols such as IP-over-InfiniBand as well as with userspace - applications (in conjunction with InfiniBand userspace access). + This is a driver for QLogic InfiniPath host channel adapters, + including InfiniBand verbs support. This driver allows these + devices to be used with both kernel upper level protocols such + as IP-over-InfiniBand as well as with userspace applications + (in conjunction with InfiniBand userspace access). diff --git a/drivers/infiniband/hw/ipath/Makefile b/drivers/infiniband/hw/ipath/Makefile index b4d084abfd22..5e29cb0095e5 100644 --- a/drivers/infiniband/hw/ipath/Makefile +++ b/drivers/infiniband/hw/ipath/Makefile @@ -1,36 +1,35 @@ -EXTRA_CFLAGS += -DIPATH_IDSTR='"PathScale kernel.org driver"' \ +EXTRA_CFLAGS += -DIPATH_IDSTR='"QLogic kernel.org driver"' \ -DIPATH_KERN_TYPE=0 -obj-$(CONFIG_IPATH_CORE) += ipath_core.o obj-$(CONFIG_INFINIBAND_IPATH) += ib_ipath.o -ipath_core-y := \ +ib_ipath-y := \ + ipath_cq.o \ ipath_diag.o \ ipath_driver.o \ ipath_eeprom.o \ ipath_file_ops.o \ ipath_fs.o \ - ipath_ht400.o \ + ipath_iba6110.o \ + ipath_iba6120.o \ ipath_init_chip.o \ ipath_intr.o \ - ipath_layer.o \ - ipath_pe800.o \ - ipath_stats.o \ - ipath_sysfs.o \ - ipath_user_pages.o - -ipath_core-$(CONFIG_X86_64) += ipath_wc_x86_64.o - -ib_ipath-y := \ - ipath_cq.o \ ipath_keys.o \ + ipath_layer.o \ ipath_mad.o \ + ipath_mmap.o \ ipath_mr.o \ ipath_qp.o \ ipath_rc.o \ ipath_ruc.o \ ipath_srq.o \ + ipath_stats.o \ + ipath_sysfs.o \ ipath_uc.o \ ipath_ud.o \ - ipath_verbs.o \ - ipath_verbs_mcast.o + ipath_user_pages.o \ + ipath_verbs_mcast.o \ + ipath_verbs.o + +ib_ipath-$(CONFIG_X86_64) += ipath_wc_x86_64.o +ib_ipath-$(CONFIG_PPC64) += ipath_wc_ppc64.o diff --git a/drivers/infiniband/hw/ipath/ipath_common.h b/drivers/infiniband/hw/ipath/ipath_common.h index 48a55247b832..54139d398181 100644 --- a/drivers/infiniband/hw/ipath/ipath_common.h +++ b/drivers/infiniband/hw/ipath/ipath_common.h @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -38,7 +39,8 @@ * to communicate between kernel and user code. */ -/* This is the IEEE-assigned OUI for PathScale, Inc. */ + +/* This is the IEEE-assigned OUI for QLogic Inc. InfiniPath */ #define IPATH_SRC_OUI_1 0x00 #define IPATH_SRC_OUI_2 0x11 #define IPATH_SRC_OUI_3 0x75 @@ -96,17 +98,17 @@ struct infinipath_stats { __u64 sps_hwerrs; /* number of times IB link changed state unexpectedly */ __u64 sps_iblink; - /* no longer used; left for compatibility */ - __u64 sps_unused3; + /* kernel receive interrupts that didn't read intstat */ + __u64 sps_fastrcvint; /* number of kernel (port0) packets received */ __u64 sps_port0pkts; /* number of "ethernet" packets sent by driver */ __u64 sps_ether_spkts; /* number of "ethernet" packets received by driver */ __u64 sps_ether_rpkts; - /* number of SMA packets sent by driver */ + /* number of SMA packets sent by driver. Obsolete. */ __u64 sps_sma_spkts; - /* number of SMA packets received by driver */ + /* number of SMA packets received by driver. Obsolete. */ __u64 sps_sma_rpkts; /* number of times all ports rcvhdrq was full and packet dropped */ __u64 sps_hdrqfull; @@ -121,8 +123,7 @@ struct infinipath_stats { __u64 sps_ports; /* list of pkeys (other than default) accepted (0 means not set) */ __u16 sps_pkeys[4]; - /* lids for up to 4 infinipaths, indexed by infinipath # */ - __u16 sps_lid[4]; + __u16 sps_unused16[4]; /* available; maintaining compatible layout */ /* number of user ports per chip (not IB ports) */ __u32 sps_nports; /* not our interrupt, or already handled */ @@ -137,11 +138,10 @@ struct infinipath_stats { __u64 sps_pageunlocks; /* * Number of packets dropped in kernel other than errors (ether - * packets if ipath not configured, sma/mad, etc.) + * packets if ipath not configured, etc.) */ __u64 sps_krdrops; - /* mlids for up to 4 infinipaths, indexed by infinipath # */ - __u16 sps_mlid[4]; + __u64 sps_txeparity; /* PIO buffer parity error, recovered */ /* pad for future growth */ __u64 __sps_pad[45]; }; @@ -154,8 +154,6 @@ struct infinipath_stats { #define IPATH_STATUS_DISABLED 0x2 /* hardware disabled */ /* Device has been disabled via admin request */ #define IPATH_STATUS_ADMIN_DISABLED 0x4 -#define IPATH_STATUS_OIB_SMA 0x8 /* ipath_mad kernel SMA running */ -#define IPATH_STATUS_SMA 0x10 /* user SMA running */ /* Chip has been found and initted */ #define IPATH_STATUS_CHIP_PRESENT 0x20 /* IB link is at ACTIVE, usable for data traffic */ @@ -188,6 +186,9 @@ typedef enum _ipath_ureg { #define IPATH_RUNTIME_PCIE 0x2 #define IPATH_RUNTIME_FORCE_WC_ORDER 0x4 #define IPATH_RUNTIME_RCVHDR_COPY 0x8 +#define IPATH_RUNTIME_MASTER 0x10 +#define IPATH_RUNTIME_PBC_REWRITE 0x20 +#define IPATH_RUNTIME_LOOSE_DMA_ALIGN 0x40 /* * This structure is returned by ipath_userinit() immediately after @@ -205,7 +206,8 @@ struct ipath_base_info { /* version of software, for feature checking. */ __u32 spi_sw_version; /* InfiniPath port assigned, goes into sent packets */ - __u32 spi_port; + __u16 spi_port; + __u16 spi_subport; /* * IB MTU, packets IB data must be less than this. * The MTU is in bytes, and will be a multiple of 4 bytes. @@ -221,7 +223,7 @@ struct ipath_base_info { __u32 spi_tidcnt; /* size of the TID Eager list in infinipath, in entries */ __u32 spi_tidegrcnt; - /* size of a single receive header queue entry. */ + /* size of a single receive header queue entry in words. */ __u32 spi_rcvhdrent_size; /* * Count of receive header queue entries allocated. @@ -310,6 +312,15 @@ struct ipath_base_info { __u32 spi_rcv_egrchunksize; /* total size of mmap to cover full rcvegrbuffers */ __u32 spi_rcv_egrbuftotlen; + __u32 spi_filler_for_align; + /* address of readonly memory copy of the rcvhdrq tail register. */ + __u64 spi_rcvhdr_tailaddr; + + /* shared memory pages for subports if IPATH_RUNTIME_MASTER is set */ + __u64 spi_subport_uregbase; + __u64 spi_subport_rcvegrbuf; + __u64 spi_subport_rcvhdr_base; + } __attribute__ ((aligned(8))); @@ -328,12 +339,12 @@ struct ipath_base_info { /* * Minor version differences are always compatible - * a within a major version, however if if user software is larger + * a within a major version, however if user software is larger * than driver software, some new features and/or structure fields * may not be implemented; the user code must deal with this if it - * cares, or it must abort after initialization reports the difference + * cares, or it must abort after initialization reports the difference. */ -#define IPATH_USER_SWMINOR 2 +#define IPATH_USER_SWMINOR 3 #define IPATH_USER_SWVERSION ((IPATH_USER_SWMAJOR<<16) | IPATH_USER_SWMINOR) @@ -342,9 +353,9 @@ struct ipath_base_info { /* * Similarly, this is the kernel version going back to the user. It's * slightly different, in that we want to tell if the driver was built as - * part of a PathScale release, or from the driver from OpenIB, kernel.org, - * or a standard distribution, for support reasons. The high bit is 0 for - * non-PathScale, and 1 for PathScale-built/supplied. + * part of a QLogic release, or from the driver from openfabrics.org, + * kernel.org, or a standard distribution, for support reasons. + * The high bit is 0 for non-QLogic and 1 for QLogic-built/supplied. * * It's returned by the driver to the user code during initialization in the * spi_sw_version field of ipath_base_info, so the user code can in turn @@ -380,12 +391,15 @@ struct ipath_user_info { __u32 spu_rcvhdrsize; /* - * cache line aligned (64 byte) user address to - * which the rcvhdrtail register will be written by infinipath - * whenever it changes, so that no chip registers are read in - * the performance path. + * If two or more processes wish to share a port, each process + * must set the spu_subport_cnt and spu_subport_id to the same + * values. The only restriction on the spu_subport_id is that + * it be unique for a given node. */ - __u64 spu_rcvhdraddr; + __u16 spu_subport_cnt; + __u16 spu_subport_id; + + __u32 spu_unused; /* kept for compatible layout */ /* * address of struct base_info to write to @@ -398,19 +412,25 @@ struct ipath_user_info { #define IPATH_CMD_MIN 16 -#define IPATH_CMD_USER_INIT 16 /* set up userspace */ +#define __IPATH_CMD_USER_INIT 16 /* old set up userspace (for old user code) */ #define IPATH_CMD_PORT_INFO 17 /* find out what resources we got */ #define IPATH_CMD_RECV_CTRL 18 /* control receipt of packets */ #define IPATH_CMD_TID_UPDATE 19 /* update expected TID entries */ #define IPATH_CMD_TID_FREE 20 /* free expected TID entries */ #define IPATH_CMD_SET_PART_KEY 21 /* add partition key */ +#define IPATH_CMD_SLAVE_INFO 22 /* return info on slave processes */ +#define IPATH_CMD_ASSIGN_PORT 23 /* allocate HCA and port */ +#define IPATH_CMD_USER_INIT 24 /* set up userspace */ -#define IPATH_CMD_MAX 21 +#define IPATH_CMD_MAX 24 struct ipath_port_info { __u32 num_active; /* number of active units */ __u32 unit; /* unit (chip) assigned to caller */ - __u32 port; /* port on unit assigned to caller */ + __u16 port; /* port on unit assigned to caller */ + __u16 subport; /* subport on unit assigned to caller */ + __u16 num_ports; /* number of ports available on unit */ + __u16 num_subports; /* number of subport slaves opened on port */ }; struct ipath_tid_info { @@ -441,6 +461,8 @@ struct ipath_cmd { __u32 recv_ctrl; /* partition key to set */ __u16 part_key; + /* user address of __u32 bitmask of active slaves */ + __u64 slave_mask_addr; } cmd; }; @@ -469,19 +491,18 @@ struct __ipath_sendpkt { struct ipath_iovec sps_iov[4]; }; -/* Passed into SMA special file's ->read and ->write methods. */ -struct ipath_sma_pkt -{ - __u32 unit; /* unit on which to send packet */ - __u64 data; /* address of payload in userspace */ - __u32 len; /* length of payload */ +/* Passed into diag data special file's ->write method. */ +struct ipath_diag_pkt { + __u32 unit; + __u64 data; + __u32 len; }; /* * Data layout in I2C flash (for GUID, etc.) * All fields are little-endian binary unless otherwise stated */ -#define IPATH_FLASH_VERSION 1 +#define IPATH_FLASH_VERSION 2 struct ipath_flash { /* flash layout version (IPATH_FLASH_VERSION) */ __u8 if_fversion; @@ -489,14 +510,14 @@ struct ipath_flash { __u8 if_csum; /* * valid length (in use, protected by if_csum), including - * if_fversion and if_sum themselves) + * if_fversion and if_csum themselves) */ __u8 if_length; /* the GUID, in network order */ __u8 if_guid[8]; /* number of GUIDs to use, starting from if_guid */ __u8 if_numguid; - /* the board serial number, in ASCII */ + /* the (last 10 characters of) board serial number, in ASCII */ char if_serial[12]; /* board mfg date (YYYYMMDD ASCII) */ char if_mfgdate[8]; @@ -508,8 +529,10 @@ struct ipath_flash { __u8 if_powerhour[2]; /* ASCII free-form comment field */ char if_comment[32]; - /* 78 bytes used, min flash size is 128 bytes */ - __u8 if_future[50]; + /* Backwards compatible prefix for longer QLogic Serial Numbers */ + char if_sprefix[4]; + /* 82 bytes used, min flash size is 128 bytes */ + __u8 if_future[46]; }; /* @@ -601,16 +624,124 @@ struct infinipath_counters { /* K_PktFlags bits */ #define INFINIPATH_KPF_INTR 0x1 +#define INFINIPATH_KPF_SUBPORT_MASK 0x3 +#define INFINIPATH_KPF_SUBPORT_SHIFT 1 + +#define INFINIPATH_MAX_SUBPORT 4 /* SendPIO per-buffer control */ -#define INFINIPATH_SP_LENGTHP1_MASK 0x3FF -#define INFINIPATH_SP_LENGTHP1_SHIFT 0 -#define INFINIPATH_SP_INTR 0x80000000 -#define INFINIPATH_SP_TEST 0x40000000 -#define INFINIPATH_SP_TESTEBP 0x20000000 +#define INFINIPATH_SP_TEST 0x40 +#define INFINIPATH_SP_TESTEBP 0x20 /* SendPIOAvail bits */ #define INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT 1 #define INFINIPATH_SENDPIOAVAIL_CHECK_SHIFT 0 +/* infinipath header format */ +struct ipath_header { + /* + * Version - 4 bits, Port - 4 bits, TID - 10 bits and Offset - + * 14 bits before ECO change ~28 Dec 03. After that, Vers 4, + * Port 4, TID 11, offset 13. + */ + __le32 ver_port_tid_offset; + __le16 chksum; + __le16 pkt_flags; +}; + +/* infinipath user message header format. + * This structure contains the first 4 fields common to all protocols + * that employ infinipath. + */ +struct ipath_message_header { + __be16 lrh[4]; + __be32 bth[3]; + /* fields below this point are in host byte order */ + struct ipath_header iph; + __u8 sub_opcode; +}; + +/* infinipath ethernet header format */ +struct ether_header { + __be16 lrh[4]; + __be32 bth[3]; + struct ipath_header iph; + __u8 sub_opcode; + __u8 cmd; + __be16 lid; + __u16 mac[3]; + __u8 frag_num; + __u8 seq_num; + __le32 len; + /* MUST be of word size due to PIO write requirements */ + __le32 csum; + __le16 csum_offset; + __le16 flags; + __u16 first_2_bytes; + __u8 unused[2]; /* currently unused */ +}; + + +/* IB - LRH header consts */ +#define IPATH_LRH_GRH 0x0003 /* 1. word of IB LRH - next header: GRH */ +#define IPATH_LRH_BTH 0x0002 /* 1. word of IB LRH - next header: BTH */ + +/* misc. */ +#define SIZE_OF_CRC 1 + +#define IPATH_DEFAULT_P_KEY 0xFFFF +#define IPATH_PERMISSIVE_LID 0xFFFF +#define IPATH_AETH_CREDIT_SHIFT 24 +#define IPATH_AETH_CREDIT_MASK 0x1F +#define IPATH_AETH_CREDIT_INVAL 0x1F +#define IPATH_PSN_MASK 0xFFFFFF +#define IPATH_MSN_MASK 0xFFFFFF +#define IPATH_QPN_MASK 0xFFFFFF +#define IPATH_MULTICAST_LID_BASE 0xC000 +#define IPATH_MULTICAST_QPN 0xFFFFFF + +/* Receive Header Queue: receive type (from infinipath) */ +#define RCVHQ_RCV_TYPE_EXPECTED 0 +#define RCVHQ_RCV_TYPE_EAGER 1 +#define RCVHQ_RCV_TYPE_NON_KD 2 +#define RCVHQ_RCV_TYPE_ERROR 3 + + +/* sub OpCodes - ith4x */ +#define IPATH_ITH4X_OPCODE_ENCAP 0x81 +#define IPATH_ITH4X_OPCODE_LID_ARP 0x82 + +#define IPATH_HEADER_QUEUE_WORDS 9 + +/* functions for extracting fields from rcvhdrq entries for the driver. + */ +static inline __u32 ipath_hdrget_err_flags(const __le32 * rbuf) +{ + return __le32_to_cpu(rbuf[1]); +} + +static inline __u32 ipath_hdrget_rcv_type(const __le32 * rbuf) +{ + return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_RCVTYPE_SHIFT) + & INFINIPATH_RHF_RCVTYPE_MASK; +} + +static inline __u32 ipath_hdrget_length_in_bytes(const __le32 * rbuf) +{ + return ((__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_LENGTH_SHIFT) + & INFINIPATH_RHF_LENGTH_MASK) << 2; +} + +static inline __u32 ipath_hdrget_index(const __le32 * rbuf) +{ + return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_EGRINDEX_SHIFT) + & INFINIPATH_RHF_EGRINDEX_MASK; +} + +static inline __u32 ipath_hdrget_ipath_ver(__le32 hdrword) +{ + return (__le32_to_cpu(hdrword) >> INFINIPATH_I_VERS_SHIFT) + & INFINIPATH_I_VERS_MASK; +} + #endif /* _IPATH_COMMON_H */ diff --git a/drivers/infiniband/hw/ipath/ipath_cq.c b/drivers/infiniband/hw/ipath/ipath_cq.c index 7ece1135ddfe..87462e0cb4d2 100644 --- a/drivers/infiniband/hw/ipath/ipath_cq.c +++ b/drivers/infiniband/hw/ipath/ipath_cq.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -41,20 +42,29 @@ * @entry: work completion entry to add * @sig: true if @entry is a solicitated entry * - * This may be called with one of the qp->s_lock or qp->r_rq.lock held. + * This may be called with qp->s_lock held. */ void ipath_cq_enter(struct ipath_cq *cq, struct ib_wc *entry, int solicited) { + struct ipath_cq_wc *wc; unsigned long flags; + u32 head; u32 next; spin_lock_irqsave(&cq->lock, flags); - if (cq->head == cq->ibcq.cqe) + /* + * Note that the head pointer might be writable by user processes. + * Take care to verify it is a sane value. + */ + wc = cq->queue; + head = wc->head; + if (head >= (unsigned) cq->ibcq.cqe) { + head = cq->ibcq.cqe; next = 0; - else - next = cq->head + 1; - if (unlikely(next == cq->tail)) { + } else + next = head + 1; + if (unlikely(next == wc->tail)) { spin_unlock_irqrestore(&cq->lock, flags); if (cq->ibcq.event_handler) { struct ib_event ev; @@ -66,8 +76,8 @@ void ipath_cq_enter(struct ipath_cq *cq, struct ib_wc *entry, int solicited) } return; } - cq->queue[cq->head] = *entry; - cq->head = next; + wc->queue[head] = *entry; + wc->head = next; if (cq->notify == IB_CQ_NEXT_COMP || (cq->notify == IB_CQ_SOLICITED && solicited)) { @@ -100,20 +110,27 @@ void ipath_cq_enter(struct ipath_cq *cq, struct ib_wc *entry, int solicited) int ipath_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry) { struct ipath_cq *cq = to_icq(ibcq); + struct ipath_cq_wc *wc; unsigned long flags; int npolled; + u32 tail; spin_lock_irqsave(&cq->lock, flags); + wc = cq->queue; + tail = wc->tail; + if (tail > (u32) cq->ibcq.cqe) + tail = (u32) cq->ibcq.cqe; for (npolled = 0; npolled < num_entries; ++npolled, ++entry) { - if (cq->tail == cq->head) + if (tail == wc->head) break; - *entry = cq->queue[cq->tail]; - if (cq->tail == cq->ibcq.cqe) - cq->tail = 0; + *entry = wc->queue[tail]; + if (tail >= cq->ibcq.cqe) + tail = 0; else - cq->tail++; + tail++; } + wc->tail = tail; spin_unlock_irqrestore(&cq->lock, flags); @@ -157,29 +174,81 @@ struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries, struct ib_ucontext *context, struct ib_udata *udata) { + struct ipath_ibdev *dev = to_idev(ibdev); struct ipath_cq *cq; - struct ib_wc *wc; + struct ipath_cq_wc *wc; struct ib_cq *ret; - /* - * Need to use vmalloc() if we want to support large #s of - * entries. - */ + if (entries < 1 || entries > ib_ipath_max_cqes) { + ret = ERR_PTR(-EINVAL); + goto done; + } + + /* Allocate the completion queue structure. */ cq = kmalloc(sizeof(*cq), GFP_KERNEL); if (!cq) { ret = ERR_PTR(-ENOMEM); - goto bail; + goto done; } /* - * Need to use vmalloc() if we want to support large #s of entries. + * Allocate the completion queue entries and head/tail pointers. + * This is allocated separately so that it can be resized and + * also mapped into user space. + * We need to use vmalloc() in order to support mmap and large + * numbers of entries. */ - wc = vmalloc(sizeof(*wc) * (entries + 1)); + wc = vmalloc_user(sizeof(*wc) + sizeof(struct ib_wc) * entries); if (!wc) { - kfree(cq); ret = ERR_PTR(-ENOMEM); - goto bail; + goto bail_cq; } + + /* + * Return the address of the WC as the offset to mmap. + * See ipath_mmap() for details. + */ + if (udata && udata->outlen >= sizeof(__u64)) { + struct ipath_mmap_info *ip; + __u64 offset = (__u64) wc; + int err; + + err = ib_copy_to_udata(udata, &offset, sizeof(offset)); + if (err) { + ret = ERR_PTR(err); + goto bail_wc; + } + + /* Allocate info for ipath_mmap(). */ + ip = kmalloc(sizeof(*ip), GFP_KERNEL); + if (!ip) { + ret = ERR_PTR(-ENOMEM); + goto bail_wc; + } + cq->ip = ip; + ip->context = context; + ip->obj = wc; + kref_init(&ip->ref); + ip->mmap_cnt = 0; + ip->size = PAGE_ALIGN(sizeof(*wc) + + sizeof(struct ib_wc) * entries); + spin_lock_irq(&dev->pending_lock); + ip->next = dev->pending_mmaps; + dev->pending_mmaps = ip; + spin_unlock_irq(&dev->pending_lock); + } else + cq->ip = NULL; + + spin_lock(&dev->n_cqs_lock); + if (dev->n_cqs_allocated == ib_ipath_max_cqs) { + spin_unlock(&dev->n_cqs_lock); + ret = ERR_PTR(-ENOMEM); + goto bail_wc; + } + + dev->n_cqs_allocated++; + spin_unlock(&dev->n_cqs_lock); + /* * ib_create_cq() will initialize cq->ibcq except for cq->ibcq.cqe. * The number of entries should be >= the number requested or return @@ -190,13 +259,21 @@ struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries, cq->triggered = 0; spin_lock_init(&cq->lock); tasklet_init(&cq->comptask, send_complete, (unsigned long)cq); - cq->head = 0; - cq->tail = 0; + wc->head = 0; + wc->tail = 0; cq->queue = wc; ret = &cq->ibcq; -bail: + goto done; + +bail_wc: + vfree(wc); + +bail_cq: + kfree(cq); + +done: return ret; } @@ -210,10 +287,17 @@ bail: */ int ipath_destroy_cq(struct ib_cq *ibcq) { + struct ipath_ibdev *dev = to_idev(ibcq->device); struct ipath_cq *cq = to_icq(ibcq); tasklet_kill(&cq->comptask); - vfree(cq->queue); + spin_lock(&dev->n_cqs_lock); + dev->n_cqs_allocated--; + spin_unlock(&dev->n_cqs_lock); + if (cq->ip) + kref_put(&cq->ip->ref, ipath_release_mmap_info); + else + vfree(cq->queue); kfree(cq); return 0; @@ -237,7 +321,7 @@ int ipath_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify notify) spin_lock_irqsave(&cq->lock, flags); /* * Don't change IB_CQ_NEXT_COMP to IB_CQ_SOLICITED but allow - * any other transitions. + * any other transitions (see C11-31 and C11-32 in ch. 11.4.2.2). */ if (cq->notify != IB_CQ_NEXT_COMP) cq->notify = notify; @@ -245,49 +329,96 @@ int ipath_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify notify) return 0; } +/** + * ipath_resize_cq - change the size of the CQ + * @ibcq: the completion queue + * + * Returns 0 for success. + */ int ipath_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata) { struct ipath_cq *cq = to_icq(ibcq); - struct ib_wc *wc, *old_wc; - u32 n; + struct ipath_cq_wc *old_wc; + struct ipath_cq_wc *wc; + u32 head, tail, n; int ret; + if (cqe < 1 || cqe > ib_ipath_max_cqes) { + ret = -EINVAL; + goto bail; + } + /* * Need to use vmalloc() if we want to support large #s of entries. */ - wc = vmalloc(sizeof(*wc) * (cqe + 1)); + wc = vmalloc_user(sizeof(*wc) + sizeof(struct ib_wc) * cqe); if (!wc) { ret = -ENOMEM; goto bail; } + /* + * Return the address of the WC as the offset to mmap. + * See ipath_mmap() for details. + */ + if (udata && udata->outlen >= sizeof(__u64)) { + __u64 offset = (__u64) wc; + + ret = ib_copy_to_udata(udata, &offset, sizeof(offset)); + if (ret) + goto bail; + } + spin_lock_irq(&cq->lock); - if (cq->head < cq->tail) - n = cq->ibcq.cqe + 1 + cq->head - cq->tail; + /* + * Make sure head and tail are sane since they + * might be user writable. + */ + old_wc = cq->queue; + head = old_wc->head; + if (head > (u32) cq->ibcq.cqe) + head = (u32) cq->ibcq.cqe; + tail = old_wc->tail; + if (tail > (u32) cq->ibcq.cqe) + tail = (u32) cq->ibcq.cqe; + if (head < tail) + n = cq->ibcq.cqe + 1 + head - tail; else - n = cq->head - cq->tail; + n = head - tail; if (unlikely((u32)cqe < n)) { spin_unlock_irq(&cq->lock); vfree(wc); ret = -EOVERFLOW; goto bail; } - for (n = 0; cq->tail != cq->head; n++) { - wc[n] = cq->queue[cq->tail]; - if (cq->tail == cq->ibcq.cqe) - cq->tail = 0; + for (n = 0; tail != head; n++) { + wc->queue[n] = old_wc->queue[tail]; + if (tail == (u32) cq->ibcq.cqe) + tail = 0; else - cq->tail++; + tail++; } cq->ibcq.cqe = cqe; - cq->head = n; - cq->tail = 0; - old_wc = cq->queue; + wc->head = n; + wc->tail = 0; cq->queue = wc; spin_unlock_irq(&cq->lock); vfree(old_wc); + if (cq->ip) { + struct ipath_ibdev *dev = to_idev(ibcq->device); + struct ipath_mmap_info *ip = cq->ip; + + ip->obj = wc; + ip->size = PAGE_ALIGN(sizeof(*wc) + + sizeof(struct ib_wc) * cqe); + spin_lock_irq(&dev->pending_lock); + ip->next = dev->pending_mmaps; + dev->pending_mmaps = ip; + spin_unlock_irq(&dev->pending_lock); + } + ret = 0; bail: diff --git a/drivers/infiniband/hw/ipath/ipath_debug.h b/drivers/infiniband/hw/ipath/ipath_debug.h index 46762387f5f8..df69f0d80b8b 100644 --- a/drivers/infiniband/hw/ipath/ipath_debug.h +++ b/drivers/infiniband/hw/ipath/ipath_debug.h @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -59,7 +60,6 @@ #define __IPATH_USER_SEND 0x1000 /* use user mode send */ #define __IPATH_KERNEL_SEND 0x2000 /* use kernel mode send */ #define __IPATH_EPKTDBG 0x4000 /* print ethernet packet data */ -#define __IPATH_SMADBG 0x8000 /* sma packet debug */ #define __IPATH_IPATHDBG 0x10000 /* Ethernet (IPATH) gen debug */ #define __IPATH_IPATHWARN 0x20000 /* Ethernet (IPATH) warnings */ #define __IPATH_IPATHERR 0x40000 /* Ethernet (IPATH) errors */ @@ -83,7 +83,6 @@ /* print mmap/nopage stuff, not using VDBG any more */ #define __IPATH_MMDBG 0x0 #define __IPATH_EPKTDBG 0x0 /* print ethernet packet data */ -#define __IPATH_SMADBG 0x0 /* process startup (init)/exit messages */ #define __IPATH_IPATHDBG 0x0 /* Ethernet (IPATH) table dump on */ #define __IPATH_IPATHWARN 0x0 /* Ethernet (IPATH) warnings on */ #define __IPATH_IPATHERR 0x0 /* Ethernet (IPATH) errors on */ diff --git a/drivers/infiniband/hw/ipath/ipath_diag.c b/drivers/infiniband/hw/ipath/ipath_diag.c index 28ddceb260e8..29958b6e0214 100644 --- a/drivers/infiniband/hw/ipath/ipath_diag.c +++ b/drivers/infiniband/hw/ipath/ipath_diag.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -40,13 +41,13 @@ * through the /sys/bus/pci resource mmap interface. */ +#include <linux/io.h> #include <linux/pci.h> +#include <linux/vmalloc.h> #include <asm/uaccess.h> -#include "ipath_common.h" #include "ipath_kernel.h" -#include "ips_common.h" -#include "ipath_layer.h" +#include "ipath_common.h" int ipath_diag_inuse; static int diag_set_link; @@ -66,18 +67,20 @@ static struct file_operations diag_file_ops = { .release = ipath_diag_release }; -static struct cdev *diag_cdev; -static struct class_device *diag_class_dev; - -int ipath_diag_init(void) +int ipath_diag_add(struct ipath_devdata *dd) { - return ipath_cdev_init(IPATH_DIAG_MINOR, "ipath_diag", - &diag_file_ops, &diag_cdev, &diag_class_dev); + char name[16]; + + snprintf(name, sizeof(name), "ipath_diag%d", dd->ipath_unit); + + return ipath_cdev_init(IPATH_DIAG_MINOR_BASE + dd->ipath_unit, name, + &diag_file_ops, &dd->diag_cdev, + &dd->diag_class_dev); } -void ipath_diag_cleanup(void) +void ipath_diag_remove(struct ipath_devdata *dd) { - ipath_cdev_cleanup(&diag_cdev, &diag_class_dev); + ipath_cdev_cleanup(&dd->diag_cdev, &dd->diag_class_dev); } /** @@ -101,8 +104,7 @@ static int ipath_read_umem64(struct ipath_devdata *dd, void __user *uaddr, int ret; /* not very efficient, but it works for now */ - if (reg_addr < dd->ipath_kregbase || - reg_end > dd->ipath_kregend) { + if (reg_addr < dd->ipath_kregbase || reg_end > dd->ipath_kregend) { ret = -EINVAL; goto bail; } @@ -113,7 +115,7 @@ static int ipath_read_umem64(struct ipath_devdata *dd, void __user *uaddr, goto bail; } reg_addr++; - uaddr++; + uaddr += sizeof(u64); } ret = 0; bail: @@ -139,8 +141,7 @@ static int ipath_write_umem64(struct ipath_devdata *dd, void __iomem *caddr, int ret; /* not very efficient, but it works for now */ - if (reg_addr < dd->ipath_kregbase || - reg_end > dd->ipath_kregend) { + if (reg_addr < dd->ipath_kregbase || reg_end > dd->ipath_kregend) { ret = -EINVAL; goto bail; } @@ -153,7 +154,7 @@ static int ipath_write_umem64(struct ipath_devdata *dd, void __iomem *caddr, writeq(data, reg_addr); reg_addr++; - uaddr++; + uaddr += sizeof(u64); } ret = 0; bail: @@ -191,7 +192,8 @@ static int ipath_read_umem32(struct ipath_devdata *dd, void __user *uaddr, } reg_addr++; - uaddr++; + uaddr += sizeof(u32); + } ret = 0; bail: @@ -230,7 +232,7 @@ static int ipath_write_umem32(struct ipath_devdata *dd, void __iomem *caddr, writel(data, reg_addr); reg_addr++; - uaddr++; + uaddr += sizeof(u32); } ret = 0; bail: @@ -239,59 +241,197 @@ bail: static int ipath_diag_open(struct inode *in, struct file *fp) { + int unit = iminor(in) - IPATH_DIAG_MINOR_BASE; struct ipath_devdata *dd; - int unit = 0; /* XXX this is bogus */ - unsigned long flags; int ret; - dd = ipath_lookup(unit); - mutex_lock(&ipath_mutex); - spin_lock_irqsave(&ipath_devs_lock, flags); if (ipath_diag_inuse) { ret = -EBUSY; goto bail; } - list_for_each_entry(dd, &ipath_dev_list, ipath_list) { - /* - * we need at least one infinipath device to be present - * (don't use INITTED, because we want to be able to open - * even if device is in freeze mode, which cleared INITTED). - * There is a small amount of risk to this, which is why we - * also verify kregbase is set. - */ - - if (!(dd->ipath_flags & IPATH_PRESENT) || - !dd->ipath_kregbase) - continue; - - ipath_diag_inuse = 1; - diag_set_link = 0; - ret = 0; + dd = ipath_lookup(unit); + + if (dd == NULL || !(dd->ipath_flags & IPATH_PRESENT) || + !dd->ipath_kregbase) { + ret = -ENODEV; goto bail; } - ret = -ENODEV; - -bail: - spin_unlock_irqrestore(&ipath_devs_lock, flags); + fp->private_data = dd; + ipath_diag_inuse = 1; + diag_set_link = 0; + ret = 0; /* Only expose a way to reset the device if we make it into diag mode. */ - if (ret == 0) - ipath_expose_reset(&dd->pcidev->dev); + ipath_expose_reset(&dd->pcidev->dev); +bail: mutex_unlock(&ipath_mutex); return ret; } -static int ipath_diag_release(struct inode *i, struct file *f) +static ssize_t ipath_diagpkt_write(struct file *fp, + const char __user *data, + size_t count, loff_t *off); + +static struct file_operations diagpkt_file_ops = { + .owner = THIS_MODULE, + .write = ipath_diagpkt_write, +}; + +static struct cdev *diagpkt_cdev; +static struct class_device *diagpkt_class_dev; + +int __init ipath_diagpkt_add(void) +{ + return ipath_cdev_init(IPATH_DIAGPKT_MINOR, + "ipath_diagpkt", &diagpkt_file_ops, + &diagpkt_cdev, &diagpkt_class_dev); +} + +void __exit ipath_diagpkt_remove(void) +{ + ipath_cdev_cleanup(&diagpkt_cdev, &diagpkt_class_dev); +} + +/** + * ipath_diagpkt_write - write an IB packet + * @fp: the diag data device file pointer + * @data: ipath_diag_pkt structure saying where to get the packet + * @count: size of data to write + * @off: unused by this code + */ +static ssize_t ipath_diagpkt_write(struct file *fp, + const char __user *data, + size_t count, loff_t *off) +{ + u32 __iomem *piobuf; + u32 plen, clen, pbufn; + struct ipath_diag_pkt dp; + u32 *tmpbuf = NULL; + struct ipath_devdata *dd; + ssize_t ret = 0; + u64 val; + + if (count < sizeof(dp)) { + ret = -EINVAL; + goto bail; + } + + if (copy_from_user(&dp, data, sizeof(dp))) { + ret = -EFAULT; + goto bail; + } + + /* send count must be an exact number of dwords */ + if (dp.len & 3) { + ret = -EINVAL; + goto bail; + } + + clen = dp.len >> 2; + + dd = ipath_lookup(dp.unit); + if (!dd || !(dd->ipath_flags & IPATH_PRESENT) || + !dd->ipath_kregbase) { + ipath_cdbg(VERBOSE, "illegal unit %u for diag data send\n", + dp.unit); + ret = -ENODEV; + goto bail; + } + + if (ipath_diag_inuse && !diag_set_link && + !(dd->ipath_flags & IPATH_LINKACTIVE)) { + diag_set_link = 1; + ipath_cdbg(VERBOSE, "Trying to set to set link active for " + "diag pkt\n"); + ipath_set_linkstate(dd, IPATH_IB_LINKARM); + ipath_set_linkstate(dd, IPATH_IB_LINKACTIVE); + } + + if (!(dd->ipath_flags & IPATH_INITTED)) { + /* no hardware, freeze, etc. */ + ipath_cdbg(VERBOSE, "unit %u not usable\n", dd->ipath_unit); + ret = -ENODEV; + goto bail; + } + val = dd->ipath_lastibcstat & IPATH_IBSTATE_MASK; + if (val != IPATH_IBSTATE_INIT && val != IPATH_IBSTATE_ARM && + val != IPATH_IBSTATE_ACTIVE) { + ipath_cdbg(VERBOSE, "unit %u not ready (state %llx)\n", + dd->ipath_unit, (unsigned long long) val); + ret = -EINVAL; + goto bail; + } + + /* need total length before first word written */ + /* +1 word is for the qword padding */ + plen = sizeof(u32) + dp.len; + + if ((plen + 4) > dd->ipath_ibmaxlen) { + ipath_dbg("Pkt len 0x%x > ibmaxlen %x\n", + plen - 4, dd->ipath_ibmaxlen); + ret = -EINVAL; + goto bail; /* before writing pbc */ + } + tmpbuf = vmalloc(plen); + if (!tmpbuf) { + dev_info(&dd->pcidev->dev, "Unable to allocate tmp buffer, " + "failing\n"); + ret = -ENOMEM; + goto bail; + } + + if (copy_from_user(tmpbuf, + (const void __user *) (unsigned long) dp.data, + dp.len)) { + ret = -EFAULT; + goto bail; + } + + piobuf = ipath_getpiobuf(dd, &pbufn); + if (!piobuf) { + ipath_cdbg(VERBOSE, "No PIO buffers avail unit for %u\n", + dd->ipath_unit); + ret = -EBUSY; + goto bail; + } + + plen >>= 2; /* in dwords */ + + if (ipath_debug & __IPATH_PKTDBG) + ipath_cdbg(VERBOSE, "unit %u 0x%x+1w pio%d\n", + dd->ipath_unit, plen - 1, pbufn); + + /* we have to flush after the PBC for correctness on some cpus + * or WC buffer can be written out of order */ + writeq(plen, piobuf); + ipath_flush_wc(); + /* copy all by the trigger word, then flush, so it's written + * to chip before trigger word, then write trigger word, then + * flush again, so packet is sent. */ + __iowrite32_copy(piobuf + 2, tmpbuf, clen - 1); + ipath_flush_wc(); + __raw_writel(tmpbuf[clen - 1], piobuf + clen + 1); + ipath_flush_wc(); + + ret = sizeof(dp); + +bail: + vfree(tmpbuf); + return ret; +} + +static int ipath_diag_release(struct inode *in, struct file *fp) { mutex_lock(&ipath_mutex); ipath_diag_inuse = 0; + fp->private_data = NULL; mutex_unlock(&ipath_mutex); return 0; } @@ -299,17 +439,10 @@ static int ipath_diag_release(struct inode *i, struct file *f) static ssize_t ipath_diag_read(struct file *fp, char __user *data, size_t count, loff_t *off) { - int unit = 0; /* XXX provide for reads on other units some day */ - struct ipath_devdata *dd; + struct ipath_devdata *dd = fp->private_data; void __iomem *kreg_base; ssize_t ret; - dd = ipath_lookup(unit); - if (!dd) { - ret = -ENODEV; - goto bail; - } - kreg_base = dd->ipath_kregbase; if (count == 0) @@ -328,23 +461,16 @@ static ssize_t ipath_diag_read(struct file *fp, char __user *data, ret = count; } -bail: return ret; } static ssize_t ipath_diag_write(struct file *fp, const char __user *data, size_t count, loff_t *off) { - int unit = 0; /* XXX this is bogus */ - struct ipath_devdata *dd; + struct ipath_devdata *dd = fp->private_data; void __iomem *kreg_base; ssize_t ret; - dd = ipath_lookup(unit); - if (!dd) { - ret = -ENODEV; - goto bail; - } kreg_base = dd->ipath_kregbase; if (count == 0) @@ -363,6 +489,5 @@ static ssize_t ipath_diag_write(struct file *fp, const char __user *data, ret = count; } -bail: return ret; } diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c index dddcdae736ac..12cefa658f3b 100644 --- a/drivers/infiniband/hw/ipath/ipath_driver.c +++ b/drivers/infiniband/hw/ipath/ipath_driver.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -38,8 +39,8 @@ #include <linux/vmalloc.h> #include "ipath_kernel.h" -#include "ips_common.h" -#include "ipath_layer.h" +#include "ipath_verbs.h" +#include "ipath_common.h" static void ipath_update_pio_bufs(struct ipath_devdata *); @@ -50,22 +51,20 @@ const char *ipath_get_unit_name(int unit) return iname; } -EXPORT_SYMBOL_GPL(ipath_get_unit_name); - -#define DRIVER_LOAD_MSG "PathScale " IPATH_DRV_NAME " loaded: " +#define DRIVER_LOAD_MSG "QLogic " IPATH_DRV_NAME " loaded: " #define PFX IPATH_DRV_NAME ": " /* * The size has to be longer than this string, so we can append * board/chip information to it in the init code. */ -const char ipath_core_version[] = IPATH_IDSTR "\n"; +const char ib_ipath_version[] = IPATH_IDSTR "\n"; static struct idr unit_table; DEFINE_SPINLOCK(ipath_devs_lock); LIST_HEAD(ipath_dev_list); -wait_queue_head_t ipath_sma_state_wait; +wait_queue_head_t ipath_state_wait; unsigned ipath_debug = __IPATH_INFO; @@ -74,8 +73,8 @@ MODULE_PARM_DESC(debug, "mask for debug prints"); EXPORT_SYMBOL_GPL(ipath_debug); MODULE_LICENSE("GPL"); -MODULE_AUTHOR("PathScale <support@pathscale.com>"); -MODULE_DESCRIPTION("Pathscale InfiniPath driver"); +MODULE_AUTHOR("QLogic <support@pathscale.com>"); +MODULE_DESCRIPTION("QLogic InfiniPath driver"); const char *ipath_ibcstatus_str[] = { "Disabled", @@ -96,16 +95,6 @@ const char *ipath_ibcstatus_str[] = { "RecovIdle", }; -/* - * These variables are initialized in the chip-specific files - * but are defined here. - */ -u16 ipath_gpio_sda_num, ipath_gpio_scl_num; -u64 ipath_gpio_sda, ipath_gpio_scl; -u64 infinipath_i_bitsextant; -ipath_err_t infinipath_e_bitsextant, infinipath_hwe_bitsextant; -u32 infinipath_i_rcvavail_mask, infinipath_i_rcvurg_mask; - static void __devexit ipath_remove_one(struct pci_dev *); static int __devinit ipath_init_one(struct pci_dev *, const struct pci_device_id *); @@ -130,14 +119,6 @@ static struct pci_driver ipath_driver = { .id_table = ipath_pci_tbl, }; -/* - * This is where port 0's rcvhdrtail register is written back; we also - * want nothing else sharing the cache line, so make it a cache line - * in size. Used for all units. - */ -volatile __le64 *ipath_port0_rcvhdrtail; -dma_addr_t ipath_port0_rcvhdrtail_dma; -static int port0_rcvhdrtail_refs; static inline void read_bars(struct ipath_devdata *dd, struct pci_dev *dev, u32 *bar0, u32 *bar1) @@ -170,14 +151,13 @@ static void ipath_free_devdata(struct pci_dev *pdev, list_del(&dd->ipath_list); spin_unlock_irqrestore(&ipath_devs_lock, flags); } - dma_free_coherent(&pdev->dev, sizeof(*dd), dd, dd->ipath_dma_addr); + vfree(dd); } static struct ipath_devdata *ipath_alloc_devdata(struct pci_dev *pdev) { unsigned long flags; struct ipath_devdata *dd; - dma_addr_t dma_addr; int ret; if (!idr_pre_get(&unit_table, GFP_KERNEL)) { @@ -185,15 +165,12 @@ static struct ipath_devdata *ipath_alloc_devdata(struct pci_dev *pdev) goto bail; } - dd = dma_alloc_coherent(&pdev->dev, sizeof(*dd), &dma_addr, - GFP_KERNEL); - + dd = vmalloc(sizeof(*dd)); if (!dd) { dd = ERR_PTR(-ENOMEM); goto bail; } - - dd->ipath_dma_addr = dma_addr; + memset(dd, 0, sizeof(*dd)); dd->ipath_unit = -1; spin_lock_irqsave(&ipath_devs_lock, flags); @@ -271,47 +248,6 @@ int ipath_count_units(int *npresentp, int *nupp, u32 *maxportsp) return nunits; } -static int init_port0_rcvhdrtail(struct pci_dev *pdev) -{ - int ret; - - mutex_lock(&ipath_mutex); - - if (!ipath_port0_rcvhdrtail) { - ipath_port0_rcvhdrtail = - dma_alloc_coherent(&pdev->dev, - IPATH_PORT0_RCVHDRTAIL_SIZE, - &ipath_port0_rcvhdrtail_dma, - GFP_KERNEL); - - if (!ipath_port0_rcvhdrtail) { - ret = -ENOMEM; - goto bail; - } - } - port0_rcvhdrtail_refs++; - ret = 0; - -bail: - mutex_unlock(&ipath_mutex); - - return ret; -} - -static void cleanup_port0_rcvhdrtail(struct pci_dev *pdev) -{ - mutex_lock(&ipath_mutex); - - if (!--port0_rcvhdrtail_refs) { - dma_free_coherent(&pdev->dev, IPATH_PORT0_RCVHDRTAIL_SIZE, - (void *) ipath_port0_rcvhdrtail, - ipath_port0_rcvhdrtail_dma); - ipath_port0_rcvhdrtail = NULL; - } - - mutex_unlock(&ipath_mutex); -} - /* * These next two routines are placeholders in case we don't have per-arch * code for controlling write combining. If explicit control of write @@ -336,20 +272,12 @@ static int __devinit ipath_init_one(struct pci_dev *pdev, u32 bar0 = 0, bar1 = 0; u8 rev; - ret = init_port0_rcvhdrtail(pdev); - if (ret < 0) { - printk(KERN_ERR IPATH_DRV_NAME - ": Could not allocate port0_rcvhdrtail: error %d\n", - -ret); - goto bail; - } - dd = ipath_alloc_devdata(pdev); if (IS_ERR(dd)) { ret = PTR_ERR(dd); printk(KERN_ERR IPATH_DRV_NAME ": Could not allocate devdata: error %d\n", -ret); - goto bail_rcvhdrtail; + goto bail; } ipath_cdbg(VERBOSE, "initializing unit #%u\n", dd->ipath_unit); @@ -424,12 +352,29 @@ static int __devinit ipath_init_one(struct pci_dev *pdev, */ ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK); if (ret) { - dev_info(&pdev->dev, "pci_set_dma_mask unit %u " - "fails: %d\n", dd->ipath_unit, ret); + dev_info(&pdev->dev, + "Unable to set DMA mask for unit %u: %d\n", + dd->ipath_unit, ret); goto bail_regions; } - else + else { ipath_dbg("No 64bit DMA mask, used 32 bit mask\n"); + ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); + if (ret) + dev_info(&pdev->dev, + "Unable to set DMA consistent mask " + "for unit %u: %d\n", + dd->ipath_unit, ret); + + } + } + else { + ret = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); + if (ret) + dev_info(&pdev->dev, + "Unable to set DMA consistent mask " + "for unit %u: %d\n", + dd->ipath_unit, ret); } pci_set_master(pdev); @@ -446,13 +391,13 @@ static int __devinit ipath_init_one(struct pci_dev *pdev, /* setup the chip-specific functions, as early as possible. */ switch (ent->device) { case PCI_DEVICE_ID_INFINIPATH_HT: - ipath_init_ht400_funcs(dd); + ipath_init_iba6110_funcs(dd); break; case PCI_DEVICE_ID_INFINIPATH_PE800: - ipath_init_pe800_funcs(dd); + ipath_init_iba6120_funcs(dd); break; default: - ipath_dev_err(dd, "Found unknown PathScale deviceid 0x%x, " + ipath_dev_err(dd, "Found unknown QLogic deviceid 0x%x, " "failing\n", ent->device); return -ENODEV; } @@ -460,10 +405,10 @@ static int __devinit ipath_init_one(struct pci_dev *pdev, for (j = 0; j < 6; j++) { if (!pdev->resource[j].start) continue; - ipath_cdbg(VERBOSE, "BAR %d start %lx, end %lx, len %lx\n", - j, pdev->resource[j].start, - pdev->resource[j].end, - pci_resource_len(pdev, j)); + ipath_cdbg(VERBOSE, "BAR %d start %llx, end %llx, len %llx\n", + j, (unsigned long long)pdev->resource[j].start, + (unsigned long long)pdev->resource[j].end, + (unsigned long long)pci_resource_len(pdev, j)); } if (!addr) { @@ -483,7 +428,13 @@ static int __devinit ipath_init_one(struct pci_dev *pdev, } dd->ipath_pcirev = rev; +#if defined(__powerpc__) + /* There isn't a generic way to specify writethrough mappings */ + dd->ipath_kregbase = __ioremap(addr, len, + (_PAGE_NO_CACHE|_PAGE_WRITETHRU)); +#else dd->ipath_kregbase = ioremap_nocache(addr, len); +#endif if (!dd->ipath_kregbase) { ipath_dbg("Unable to map io addr %llx to kvirt, failing\n", @@ -495,23 +446,23 @@ static int __devinit ipath_init_one(struct pci_dev *pdev, ((void __iomem *)dd->ipath_kregbase + len); dd->ipath_physaddr = addr; /* used for io_remap, etc. */ /* for user mmap */ - dd->ipath_kregvirt = (u64 __iomem *) phys_to_virt(addr); - ipath_cdbg(VERBOSE, "mapped io addr %llx to kregbase %p " - "kregvirt %p\n", addr, dd->ipath_kregbase, - dd->ipath_kregvirt); + ipath_cdbg(VERBOSE, "mapped io addr %llx to kregbase %p\n", + addr, dd->ipath_kregbase); /* * clear ipath_flags here instead of in ipath_init_chip as it is set * by ipath_setup_htconfig. */ dd->ipath_flags = 0; + dd->ipath_lli_counter = 0; + dd->ipath_lli_errors = 0; if (dd->ipath_f_bus(dd, pdev)) ipath_dev_err(dd, "Failed to setup config space; " "continuing anyway\n"); /* - * set up our interrupt handler; SA_SHIRQ probably not needed, + * set up our interrupt handler; IRQF_SHARED probably not needed, * since MSI interrupts shouldn't be shared but won't hurt for now. * check 0 irq after we return from chip-specific bus setup, since * that can affect this due to setup @@ -520,7 +471,7 @@ static int __devinit ipath_init_one(struct pci_dev *pdev, ipath_dev_err(dd, "irq is 0, BIOS error? Interrupts won't " "work\n"); else { - ret = request_irq(pdev->irq, ipath_intr, SA_SHIRQ, + ret = request_irq(pdev->irq, ipath_intr, IRQF_SHARED, IPATH_DRV_NAME, dd); if (ret) { ipath_dev_err(dd, "Couldn't setup irq handler, " @@ -545,7 +496,8 @@ static int __devinit ipath_init_one(struct pci_dev *pdev, ipath_device_create_group(&pdev->dev, dd); ipathfs_add_device(dd); ipath_user_add(dd); - ipath_layer_add(dd); + ipath_diag_add(dd); + ipath_register_ib_device(dd); goto bail; @@ -561,40 +513,155 @@ bail_disable: bail_devdata: ipath_free_devdata(pdev, dd); -bail_rcvhdrtail: - cleanup_port0_rcvhdrtail(pdev); - bail: return ret; } +static void __devexit cleanup_device(struct ipath_devdata *dd) +{ + int port; + + ipath_shutdown_device(dd); + + if (*dd->ipath_statusp & IPATH_STATUS_CHIP_PRESENT) { + /* can't do anything more with chip; needs re-init */ + *dd->ipath_statusp &= ~IPATH_STATUS_CHIP_PRESENT; + if (dd->ipath_kregbase) { + /* + * if we haven't already cleaned up before these are + * to ensure any register reads/writes "fail" until + * re-init + */ + dd->ipath_kregbase = NULL; + dd->ipath_uregbase = 0; + dd->ipath_sregbase = 0; + dd->ipath_cregbase = 0; + dd->ipath_kregsize = 0; + } + ipath_disable_wc(dd); + } + + if (dd->ipath_pioavailregs_dma) { + dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE, + (void *) dd->ipath_pioavailregs_dma, + dd->ipath_pioavailregs_phys); + dd->ipath_pioavailregs_dma = NULL; + } + if (dd->ipath_dummy_hdrq) { + dma_free_coherent(&dd->pcidev->dev, + dd->ipath_pd[0]->port_rcvhdrq_size, + dd->ipath_dummy_hdrq, dd->ipath_dummy_hdrq_phys); + dd->ipath_dummy_hdrq = NULL; + } + + if (dd->ipath_pageshadow) { + struct page **tmpp = dd->ipath_pageshadow; + dma_addr_t *tmpd = dd->ipath_physshadow; + int i, cnt = 0; + + ipath_cdbg(VERBOSE, "Unlocking any expTID pages still " + "locked\n"); + for (port = 0; port < dd->ipath_cfgports; port++) { + int port_tidbase = port * dd->ipath_rcvtidcnt; + int maxtid = port_tidbase + dd->ipath_rcvtidcnt; + for (i = port_tidbase; i < maxtid; i++) { + if (!tmpp[i]) + continue; + pci_unmap_page(dd->pcidev, tmpd[i], + PAGE_SIZE, PCI_DMA_FROMDEVICE); + ipath_release_user_pages(&tmpp[i], 1); + tmpp[i] = NULL; + cnt++; + } + } + if (cnt) { + ipath_stats.sps_pageunlocks += cnt; + ipath_cdbg(VERBOSE, "There were still %u expTID " + "entries locked\n", cnt); + } + if (ipath_stats.sps_pagelocks || + ipath_stats.sps_pageunlocks) + ipath_cdbg(VERBOSE, "%llu pages locked, %llu " + "unlocked via ipath_m{un}lock\n", + (unsigned long long) + ipath_stats.sps_pagelocks, + (unsigned long long) + ipath_stats.sps_pageunlocks); + + ipath_cdbg(VERBOSE, "Free shadow page tid array at %p\n", + dd->ipath_pageshadow); + vfree(dd->ipath_pageshadow); + dd->ipath_pageshadow = NULL; + } + + /* + * free any resources still in use (usually just kernel ports) + * at unload; we do for portcnt, not cfgports, because cfgports + * could have changed while we were loaded. + */ + for (port = 0; port < dd->ipath_portcnt; port++) { + struct ipath_portdata *pd = dd->ipath_pd[port]; + dd->ipath_pd[port] = NULL; + ipath_free_pddata(dd, pd); + } + kfree(dd->ipath_pd); + /* + * debuggability, in case some cleanup path tries to use it + * after this + */ + dd->ipath_pd = NULL; +} + static void __devexit ipath_remove_one(struct pci_dev *pdev) { - struct ipath_devdata *dd; + struct ipath_devdata *dd = pci_get_drvdata(pdev); - ipath_cdbg(VERBOSE, "removing, pdev=%p\n", pdev); - if (!pdev) - return; + ipath_cdbg(VERBOSE, "removing, pdev=%p, dd=%p\n", pdev, dd); - dd = pci_get_drvdata(pdev); - ipath_layer_del(dd); - ipath_user_del(dd); + if (dd->verbs_dev) + ipath_unregister_ib_device(dd->verbs_dev); + + ipath_diag_remove(dd); + ipath_user_remove(dd); ipathfs_remove_device(dd); ipath_device_remove_group(&pdev->dev, dd); + ipath_cdbg(VERBOSE, "Releasing pci memory regions, dd %p, " "unit %u\n", dd, (u32) dd->ipath_unit); - if (dd->ipath_kregbase) { - ipath_cdbg(VERBOSE, "Unmapping kregbase %p\n", - dd->ipath_kregbase); - iounmap((volatile void __iomem *) dd->ipath_kregbase); - dd->ipath_kregbase = NULL; - } + + cleanup_device(dd); + + /* + * turn off rcv, send, and interrupts for all ports, all drivers + * should also hard reset the chip here? + * free up port 0 (kernel) rcvhdr, egr bufs, and eventually tid bufs + * for all versions of the driver, if they were allocated + */ + if (pdev->irq) { + ipath_cdbg(VERBOSE, + "unit %u free_irq of irq %x\n", + dd->ipath_unit, pdev->irq); + free_irq(pdev->irq, dd); + } else + ipath_dbg("irq is 0, not doing free_irq " + "for unit %u\n", dd->ipath_unit); + /* + * we check for NULL here, because it's outside + * the kregbase check, and we need to call it + * after the free_irq. Thus it's possible that + * the function pointers were never initialized. + */ + if (dd->ipath_f_cleanup) + /* clean up chip-specific stuff */ + dd->ipath_f_cleanup(dd); + + ipath_cdbg(VERBOSE, "Unmapping kregbase %p\n", dd->ipath_kregbase); + iounmap((volatile void __iomem *) dd->ipath_kregbase); pci_release_regions(pdev); ipath_cdbg(VERBOSE, "calling pci_disable_device\n"); pci_disable_device(pdev); ipath_free_devdata(pdev, dd); - cleanup_port0_rcvhdrtail(pdev); } /* general driver use */ @@ -652,21 +719,23 @@ void ipath_disarm_piobufs(struct ipath_devdata *dd, unsigned first, * * wait up to msecs milliseconds for IB link state change to occur for * now, take the easy polling route. Currently used only by - * ipath_layer_set_linkstate. Returns 0 if state reached, otherwise + * ipath_set_linkstate. Returns 0 if state reached, otherwise * -ETIMEDOUT state can have multiple states set, for any of several * transitions. */ -int ipath_wait_linkstate(struct ipath_devdata *dd, u32 state, int msecs) +static int ipath_wait_linkstate(struct ipath_devdata *dd, u32 state, + int msecs) { - dd->ipath_sma_state_wanted = state; - wait_event_interruptible_timeout(ipath_sma_state_wait, + dd->ipath_state_wanted = state; + wait_event_interruptible_timeout(ipath_state_wait, (dd->ipath_flags & state), msecs_to_jiffies(msecs)); - dd->ipath_sma_state_wanted = 0; + dd->ipath_state_wanted = 0; if (!(dd->ipath_flags & state)) { u64 val; - ipath_cdbg(SMA, "Didn't reach linkstate %s within %u ms\n", + ipath_cdbg(VERBOSE, "Didn't reach linkstate %s within %u" + " ms\n", /* test INIT ahead of DOWN, both can be set */ (state & IPATH_LINKINIT) ? "INIT" : ((state & IPATH_LINKDOWN) ? "DOWN" : @@ -799,8 +868,8 @@ static void get_rhf_errstring(u32 err, char *msg, size_t len) static inline void *ipath_get_egrbuf(struct ipath_devdata *dd, u32 bufnum, int err) { - return dd->ipath_port0_skbs ? - (void *)dd->ipath_port0_skbs[bufnum]->data : NULL; + return dd->ipath_port0_skbinfo ? + (void *) dd->ipath_port0_skbinfo[bufnum].skb->data : NULL; } /** @@ -822,85 +891,69 @@ struct sk_buff *ipath_alloc_skb(struct ipath_devdata *dd, */ /* - * We need 4 extra bytes for unaligned transfer copying + * We need 2 extra bytes for ipath_ether data sent in the + * key header. In order to keep everything dword aligned, + * we'll reserve 4 bytes. */ + len = dd->ipath_ibmaxlen + 4; + if (dd->ipath_flags & IPATH_4BYTE_TID) { - /* we need a 4KB multiple alignment, and there is no way + /* We need a 2KB multiple alignment, and there is no way * to do it except to allocate extra and then skb_reserve * enough to bring it up to the right alignment. */ - len = dd->ipath_ibmaxlen + 4 + (1 << 11) - 1; + len += 2047; } - else - len = dd->ipath_ibmaxlen + 4; + skb = __dev_alloc_skb(len, gfp_mask); if (!skb) { ipath_dev_err(dd, "Failed to allocate skbuff, length %u\n", len); goto bail; } + + skb_reserve(skb, 4); + if (dd->ipath_flags & IPATH_4BYTE_TID) { - u32 una = ((1 << 11) - 1) & (unsigned long)(skb->data + 4); + u32 una = (unsigned long)skb->data & 2047; if (una) - skb_reserve(skb, 4 + (1 << 11) - una); - else - skb_reserve(skb, 4); - } else - skb_reserve(skb, 4); + skb_reserve(skb, 2048 - una); + } bail: return skb; } -/** - * ipath_rcv_layer - receive a packet for the layered (ethernet) driver - * @dd: the infinipath device - * @etail: the sk_buff number - * @tlen: the total packet length - * @hdr: the ethernet header - * - * Separate routine for better overall optimization - */ -static void ipath_rcv_layer(struct ipath_devdata *dd, u32 etail, - u32 tlen, struct ether_header *hdr) +static void ipath_rcv_hdrerr(struct ipath_devdata *dd, + u32 eflags, + u32 l, + u32 etail, + u64 *rc) { - u32 elen; - u8 pad, *bthbytes; - struct sk_buff *skb, *nskb; - - if (dd->ipath_port0_skbs && hdr->sub_opcode == OPCODE_ENCAP) { - /* - * Allocate a new sk_buff to replace the one we give - * to the network stack. - */ - nskb = ipath_alloc_skb(dd, GFP_ATOMIC); - if (!nskb) { - /* count OK packets that we drop */ - ipath_stats.sps_krdrops++; - return; + char emsg[128]; + struct ipath_message_header *hdr; + + get_rhf_errstring(eflags, emsg, sizeof emsg); + hdr = (struct ipath_message_header *)&rc[1]; + ipath_cdbg(PKT, "RHFerrs %x hdrqtail=%x typ=%u " + "tlen=%x opcode=%x egridx=%x: %s\n", + eflags, l, + ipath_hdrget_rcv_type((__le32 *) rc), + ipath_hdrget_length_in_bytes((__le32 *) rc), + be32_to_cpu(hdr->bth[0]) >> 24, + etail, emsg); + + /* Count local link integrity errors. */ + if (eflags & (INFINIPATH_RHF_H_ICRCERR | INFINIPATH_RHF_H_VCRCERR)) { + u8 n = (dd->ipath_ibcctrl >> + INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & + INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; + + if (++dd->ipath_lli_counter > n) { + dd->ipath_lli_counter = 0; + dd->ipath_lli_errors++; } - - bthbytes = (u8 *) hdr->bth; - pad = (bthbytes[1] >> 4) & 3; - /* +CRC32 */ - elen = tlen - (sizeof(*hdr) + pad + sizeof(u32)); - - skb = dd->ipath_port0_skbs[etail]; - dd->ipath_port0_skbs[etail] = nskb; - skb_put(skb, elen); - - dd->ipath_f_put_tid(dd, etail + (u64 __iomem *) - ((char __iomem *) dd->ipath_kregbase - + dd->ipath_rcvegrbase), 0, - virt_to_phys(nskb->data)); - - __ipath_layer_rcv(dd, hdr, skb); - - /* another ether packet received */ - ipath_stats.sps_ether_rpkts++; } - else if (hdr->sub_opcode == OPCODE_LID_ARP) - __ipath_layer_rcv_lid(dd, hdr); } /* @@ -916,10 +969,9 @@ void ipath_kreceive(struct ipath_devdata *dd) const u32 rsize = dd->ipath_rcvhdrentsize; /* words */ const u32 maxcnt = dd->ipath_rcvhdrcnt * rsize; /* words */ u32 etail = -1, l, hdrqtail; - struct ips_message_header *hdr; - u32 eflags, i, etype, tlen, pkttot = 0; + struct ipath_message_header *hdr; + u32 eflags, i, etype, tlen, pkttot = 0, updegr=0, reloop=0; static u64 totcalls; /* stats, may eventually remove */ - char emsg[128]; if (!dd->ipath_hdrqtailptr) { ipath_dev_err(dd, @@ -931,24 +983,18 @@ void ipath_kreceive(struct ipath_devdata *dd) if (test_and_set_bit(0, &dd->ipath_rcv_pending)) goto bail; - if (dd->ipath_port0head == - (u32)le64_to_cpu(*dd->ipath_hdrqtailptr)) + l = dd->ipath_port0head; + hdrqtail = (u32) le64_to_cpu(*dd->ipath_hdrqtailptr); + if (l == hdrqtail) goto done; -gotmore: - /* - * read only once at start. If in flood situation, this helps - * performance slightly. If more arrive while we are processing, - * we'll come back here and do them - */ - hdrqtail = (u32)le64_to_cpu(*dd->ipath_hdrqtailptr); - - for (i = 0, l = dd->ipath_port0head; l != hdrqtail; i++) { +reloop: + for (i = 0; l != hdrqtail; i++) { u32 qp; u8 *bthbytes; rc = (u64 *) (dd->ipath_pd[0]->port_rcvhdrq + (l << 2)); - hdr = (struct ips_message_header *)&rc[1]; + hdr = (struct ipath_message_header *)&rc[1]; /* * could make a network order version of IPATH_KD_QP, and * do the obvious shift before masking to speed this up. @@ -956,10 +1002,10 @@ gotmore: qp = ntohl(hdr->bth[1]) & 0xffffff; bthbytes = (u8 *) hdr->bth; - eflags = ips_get_hdr_err_flags((__le32 *) rc); - etype = ips_get_rcv_type((__le32 *) rc); + eflags = ipath_hdrget_err_flags((__le32 *) rc); + etype = ipath_hdrget_rcv_type((__le32 *) rc); /* total length */ - tlen = ips_get_length_in_bytes((__le32 *) rc); + tlen = ipath_hdrget_length_in_bytes((__le32 *) rc); ebuf = NULL; if (etype != RCVHQ_RCV_TYPE_EXPECTED) { /* @@ -969,7 +1015,7 @@ gotmore: * set ebuf (so we try to copy data) unless the * length requires it. */ - etail = ips_get_index((__le32 *) rc); + etail = ipath_hdrget_index((__le32 *) rc); if (tlen > sizeof(*hdr) || etype == RCVHQ_RCV_TYPE_NON_KD) ebuf = ipath_get_egrbuf(dd, etail, 0); @@ -981,60 +1027,31 @@ gotmore: */ if (etype != RCVHQ_RCV_TYPE_NON_KD && etype != - RCVHQ_RCV_TYPE_ERROR && ips_get_ipath_ver( + RCVHQ_RCV_TYPE_ERROR && ipath_hdrget_ipath_ver( hdr->iph.ver_port_tid_offset) != IPS_PROTO_VERSION) { ipath_cdbg(PKT, "Bad InfiniPath protocol version " "%x\n", etype); } - if (eflags & ~(INFINIPATH_RHF_H_TIDERR | - INFINIPATH_RHF_H_IHDRERR)) { - get_rhf_errstring(eflags, emsg, sizeof emsg); - ipath_cdbg(PKT, "RHFerrs %x hdrqtail=%x typ=%u " - "tlen=%x opcode=%x egridx=%x: %s\n", - eflags, l, etype, tlen, bthbytes[0], - ips_get_index((__le32 *) rc), emsg); - } else if (etype == RCVHQ_RCV_TYPE_NON_KD) { - int ret = __ipath_verbs_rcv(dd, rc + 1, - ebuf, tlen); - if (ret == -ENODEV) - ipath_cdbg(VERBOSE, - "received IB packet, " - "not SMA (QP=%x)\n", qp); - } else if (etype == RCVHQ_RCV_TYPE_EAGER) { - if (qp == IPATH_KD_QP && - bthbytes[0] == ipath_layer_rcv_opcode && - ebuf) - ipath_rcv_layer(dd, etail, tlen, - (struct ether_header *)hdr); - else - ipath_cdbg(PKT, "typ %x, opcode %x (eager, " - "qp=%x), len %x; ignored\n", - etype, bthbytes[0], qp, tlen); + if (unlikely(eflags)) + ipath_rcv_hdrerr(dd, eflags, l, etail, rc); + else if (etype == RCVHQ_RCV_TYPE_NON_KD) { + ipath_ib_rcv(dd->verbs_dev, rc + 1, ebuf, tlen); + if (dd->ipath_lli_counter) + dd->ipath_lli_counter--; + ipath_cdbg(PKT, "typ %x, opcode %x (eager, " + "qp=%x), len %x; ignored\n", + etype, bthbytes[0], qp, tlen); } + else if (etype == RCVHQ_RCV_TYPE_EAGER) + ipath_cdbg(PKT, "typ %x, opcode %x (eager, " + "qp=%x), len %x; ignored\n", + etype, bthbytes[0], qp, tlen); else if (etype == RCVHQ_RCV_TYPE_EXPECTED) ipath_dbg("Bug: Expected TID, opcode %x; ignored\n", be32_to_cpu(hdr->bth[0]) & 0xff); - else if (eflags & (INFINIPATH_RHF_H_TIDERR | - INFINIPATH_RHF_H_IHDRERR)) { - /* - * This is a type 3 packet, only the LRH is in the - * rcvhdrq, the rest of the header is in the eager - * buffer. - */ - u8 opcode; - if (ebuf) { - bthbytes = (u8 *) ebuf; - opcode = *bthbytes; - } - else - opcode = 0; - get_rhf_errstring(eflags, emsg, sizeof emsg); - ipath_dbg("Err %x (%s), opcode %x, egrbuf %x, " - "len %x\n", eflags, emsg, opcode, etail, - tlen); - } else { + else { /* * error packet, type of error unknown. * Probably type 3, but we don't know, so don't @@ -1054,25 +1071,50 @@ gotmore: l += rsize; if (l >= maxcnt) l = 0; + if (etype != RCVHQ_RCV_TYPE_EXPECTED) + updegr = 1; /* - * update for each packet, to help prevent overflows if we - * have lots of packets. + * update head regs on last packet, and every 16 packets. + * Reduce bus traffic, while still trying to prevent + * rcvhdrq overflows, for when the queue is nearly full */ - (void)ipath_write_ureg(dd, ur_rcvhdrhead, - dd->ipath_rhdrhead_intr_off | l, 0); - if (etype != RCVHQ_RCV_TYPE_EXPECTED) - (void)ipath_write_ureg(dd, ur_rcvegrindexhead, - etail, 0); + if (l == hdrqtail || (i && !(i&0xf))) { + u64 lval; + if (l == hdrqtail) + /* request IBA6120 interrupt only on last */ + lval = dd->ipath_rhdrhead_intr_off | l; + else + lval = l; + (void)ipath_write_ureg(dd, ur_rcvhdrhead, lval, 0); + if (updegr) { + (void)ipath_write_ureg(dd, ur_rcvegrindexhead, + etail, 0); + updegr = 0; + } + } + } + + if (!dd->ipath_rhdrhead_intr_off && !reloop) { + /* IBA6110 workaround; we can have a race clearing chip + * interrupt with another interrupt about to be delivered, + * and can clear it before it is delivered on the GPIO + * workaround. By doing the extra check here for the + * in-memory tail register updating while we were doing + * earlier packets, we "almost" guarantee we have covered + * that case. + */ + u32 hqtail = (u32)le64_to_cpu(*dd->ipath_hdrqtailptr); + if (hqtail != hdrqtail) { + hdrqtail = hqtail; + reloop = 1; /* loop 1 extra time at most */ + goto reloop; + } } pkttot += i; dd->ipath_port0head = l; - if (hdrqtail != (u32)le64_to_cpu(*dd->ipath_hdrqtailptr)) - /* more arrived while we handled first batch */ - goto gotmore; - if (pkttot > ipath_stats.sps_maxpkts_call) ipath_stats.sps_maxpkts_call = pkttot; ipath_stats.sps_port0pkts += pkttot; @@ -1226,7 +1268,7 @@ int ipath_setrcvhdrsize(struct ipath_devdata *dd, unsigned rhdrsize) * * do appropriate marking as busy, etc. * returns buffer number if one found (>=0), negative number is error. - * Used by ipath_sma_send_pkt and ipath_layer_send + * Used by ipath_layer_send */ u32 __iomem *ipath_getpiobuf(struct ipath_devdata *dd, u32 * pbufnum) { @@ -1332,13 +1374,6 @@ rescan: goto bail; } - if (updated) - /* - * ran out of bufs, now some (at least this one we just - * got) are now available, so tell the layered driver. - */ - __ipath_layer_intr(dd, IPATH_LAYER_INT_SEND_CONTINUE); - /* * set next starting place. Since it's just an optimization, * it doesn't matter who wins on this, so no locking @@ -1369,26 +1404,20 @@ bail: * @dd: the infinipath device * @pd: the port data * - * this *must* be physically contiguous memory, and for now, - * that limits it to what kmalloc can do. + * this must be contiguous memory (from an i/o perspective), and must be + * DMA'able (which means for some systems, it will go through an IOMMU, + * or be forced into a low address range). */ int ipath_create_rcvhdrq(struct ipath_devdata *dd, struct ipath_portdata *pd) { - int ret = 0, amt; + int ret = 0; - amt = ALIGN(dd->ipath_rcvhdrcnt * dd->ipath_rcvhdrentsize * - sizeof(u32), PAGE_SIZE); if (!pd->port_rcvhdrq) { - /* - * not using REPEAT isn't viable; at 128KB, we can easily - * fail this. The problem with REPEAT is we can block here - * "forever". There isn't an inbetween, unfortunately. We - * could reduce the risk by never freeing the rcvhdrq except - * at unload, but even then, the first time a port is used, - * we could delay for some time... - */ + dma_addr_t phys_hdrqtail; gfp_t gfp_flags = GFP_USER | __GFP_COMP; + int amt = ALIGN(dd->ipath_rcvhdrcnt * dd->ipath_rcvhdrentsize * + sizeof(u32), PAGE_SIZE); pd->port_rcvhdrq = dma_alloc_coherent( &dd->pcidev->dev, amt, &pd->port_rcvhdrq_phys, @@ -1401,6 +1430,19 @@ int ipath_create_rcvhdrq(struct ipath_devdata *dd, ret = -ENOMEM; goto bail; } + pd->port_rcvhdrtail_kvaddr = dma_alloc_coherent( + &dd->pcidev->dev, PAGE_SIZE, &phys_hdrqtail, GFP_KERNEL); + if (!pd->port_rcvhdrtail_kvaddr) { + ipath_dev_err(dd, "attempt to allocate 1 page " + "for port %u rcvhdrqtailaddr failed\n", + pd->port_port); + ret = -ENOMEM; + dma_free_coherent(&dd->pcidev->dev, amt, + pd->port_rcvhdrq, pd->port_rcvhdrq_phys); + pd->port_rcvhdrq = NULL; + goto bail; + } + pd->port_rcvhdrqtailaddr_phys = phys_hdrqtail; pd->port_rcvhdrq_size = amt; @@ -1410,20 +1452,29 @@ int ipath_create_rcvhdrq(struct ipath_devdata *dd, (unsigned long) pd->port_rcvhdrq_phys, (unsigned long) pd->port_rcvhdrq_size, pd->port_port); - } else { - /* - * clear for security, sanity, and/or debugging, each - * time we reuse - */ - memset(pd->port_rcvhdrq, 0, amt); + + ipath_cdbg(VERBOSE, "port %d hdrtailaddr, %llx physical\n", + pd->port_port, + (unsigned long long) phys_hdrqtail); } + else + ipath_cdbg(VERBOSE, "reuse port %d rcvhdrq @%p %llx phys; " + "hdrtailaddr@%p %llx physical\n", + pd->port_port, pd->port_rcvhdrq, + (unsigned long long) pd->port_rcvhdrq_phys, + pd->port_rcvhdrtail_kvaddr, (unsigned long long) + pd->port_rcvhdrqtailaddr_phys); + + /* clear for security and sanity on each use */ + memset(pd->port_rcvhdrq, 0, pd->port_rcvhdrq_size); + memset(pd->port_rcvhdrtail_kvaddr, 0, PAGE_SIZE); /* * tell chip each time we init it, even if we are re-using previous - * memory (we zero it at process close) + * memory (we zero the register at process close) */ - ipath_cdbg(VERBOSE, "writing port %d rcvhdraddr as %lx\n", - pd->port_port, (unsigned long) pd->port_rcvhdrq_phys); + ipath_write_kreg_port(dd, dd->ipath_kregs->kr_rcvhdrtailaddr, + pd->port_port, pd->port_rcvhdrqtailaddr_phys); ipath_write_kreg_port(dd, dd->ipath_kregs->kr_rcvhdraddr, pd->port_port, pd->port_rcvhdrq_phys); @@ -1503,7 +1554,7 @@ int ipath_waitfor_mdio_cmdready(struct ipath_devdata *dd) return ret; } -void ipath_set_ib_lstate(struct ipath_devdata *dd, int which) +static void ipath_set_ib_lstate(struct ipath_devdata *dd, int which) { static const char *what[4] = { [0] = "DOWN", @@ -1511,20 +1562,206 @@ void ipath_set_ib_lstate(struct ipath_devdata *dd, int which) [INFINIPATH_IBCC_LINKCMD_ARMED] = "ARMED", [INFINIPATH_IBCC_LINKCMD_ACTIVE] = "ACTIVE" }; - ipath_cdbg(SMA, "Trying to move unit %u to %s, current ltstate " + int linkcmd = (which >> INFINIPATH_IBCC_LINKCMD_SHIFT) & + INFINIPATH_IBCC_LINKCMD_MASK; + + ipath_cdbg(VERBOSE, "Trying to move unit %u to %s, current ltstate " "is %s\n", dd->ipath_unit, - what[(which >> INFINIPATH_IBCC_LINKCMD_SHIFT) & - INFINIPATH_IBCC_LINKCMD_MASK], + what[linkcmd], ipath_ibcstatus_str[ (ipath_read_kreg64 (dd, dd->ipath_kregs->kr_ibcstatus) >> INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) & INFINIPATH_IBCS_LINKTRAININGSTATE_MASK]); + /* flush all queued sends when going to DOWN or INIT, to be sure that + * they don't block MAD packets */ + if (!linkcmd || linkcmd == INFINIPATH_IBCC_LINKCMD_INIT) { + ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, + INFINIPATH_S_ABORT); + ipath_disarm_piobufs(dd, dd->ipath_lastport_piobuf, + (unsigned)(dd->ipath_piobcnt2k + + dd->ipath_piobcnt4k) - + dd->ipath_lastport_piobuf); + } ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, dd->ipath_ibcctrl | which); } +int ipath_set_linkstate(struct ipath_devdata *dd, u8 newstate) +{ + u32 lstate; + int ret; + + switch (newstate) { + case IPATH_IB_LINKDOWN: + ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKINITCMD_POLL << + INFINIPATH_IBCC_LINKINITCMD_SHIFT); + /* don't wait */ + ret = 0; + goto bail; + + case IPATH_IB_LINKDOWN_SLEEP: + ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKINITCMD_SLEEP << + INFINIPATH_IBCC_LINKINITCMD_SHIFT); + /* don't wait */ + ret = 0; + goto bail; + + case IPATH_IB_LINKDOWN_DISABLE: + ipath_set_ib_lstate(dd, + INFINIPATH_IBCC_LINKINITCMD_DISABLE << + INFINIPATH_IBCC_LINKINITCMD_SHIFT); + /* don't wait */ + ret = 0; + goto bail; + + case IPATH_IB_LINKINIT: + if (dd->ipath_flags & IPATH_LINKINIT) { + ret = 0; + goto bail; + } + ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_INIT << + INFINIPATH_IBCC_LINKCMD_SHIFT); + lstate = IPATH_LINKINIT; + break; + + case IPATH_IB_LINKARM: + if (dd->ipath_flags & IPATH_LINKARMED) { + ret = 0; + goto bail; + } + if (!(dd->ipath_flags & + (IPATH_LINKINIT | IPATH_LINKACTIVE))) { + ret = -EINVAL; + goto bail; + } + ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_ARMED << + INFINIPATH_IBCC_LINKCMD_SHIFT); + /* + * Since the port can transition to ACTIVE by receiving + * a non VL 15 packet, wait for either state. + */ + lstate = IPATH_LINKARMED | IPATH_LINKACTIVE; + break; + + case IPATH_IB_LINKACTIVE: + if (dd->ipath_flags & IPATH_LINKACTIVE) { + ret = 0; + goto bail; + } + if (!(dd->ipath_flags & IPATH_LINKARMED)) { + ret = -EINVAL; + goto bail; + } + ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_ACTIVE << + INFINIPATH_IBCC_LINKCMD_SHIFT); + lstate = IPATH_LINKACTIVE; + break; + + default: + ipath_dbg("Invalid linkstate 0x%x requested\n", newstate); + ret = -EINVAL; + goto bail; + } + ret = ipath_wait_linkstate(dd, lstate, 2000); + +bail: + return ret; +} + +/** + * ipath_set_mtu - set the MTU + * @dd: the infinipath device + * @arg: the new MTU + * + * we can handle "any" incoming size, the issue here is whether we + * need to restrict our outgoing size. For now, we don't do any + * sanity checking on this, and we don't deal with what happens to + * programs that are already running when the size changes. + * NOTE: changing the MTU will usually cause the IBC to go back to + * link initialize (IPATH_IBSTATE_INIT) state... + */ +int ipath_set_mtu(struct ipath_devdata *dd, u16 arg) +{ + u32 piosize; + int changed = 0; + int ret; + + /* + * mtu is IB data payload max. It's the largest power of 2 less + * than piosize (or even larger, since it only really controls the + * largest we can receive; we can send the max of the mtu and + * piosize). We check that it's one of the valid IB sizes. + */ + if (arg != 256 && arg != 512 && arg != 1024 && arg != 2048 && + arg != 4096) { + ipath_dbg("Trying to set invalid mtu %u, failing\n", arg); + ret = -EINVAL; + goto bail; + } + if (dd->ipath_ibmtu == arg) { + ret = 0; /* same as current */ + goto bail; + } + + piosize = dd->ipath_ibmaxlen; + dd->ipath_ibmtu = arg; + + if (arg >= (piosize - IPATH_PIO_MAXIBHDR)) { + /* Only if it's not the initial value (or reset to it) */ + if (piosize != dd->ipath_init_ibmaxlen) { + dd->ipath_ibmaxlen = piosize; + changed = 1; + } + } else if ((arg + IPATH_PIO_MAXIBHDR) != dd->ipath_ibmaxlen) { + piosize = arg + IPATH_PIO_MAXIBHDR; + ipath_cdbg(VERBOSE, "ibmaxlen was 0x%x, setting to 0x%x " + "(mtu 0x%x)\n", dd->ipath_ibmaxlen, piosize, + arg); + dd->ipath_ibmaxlen = piosize; + changed = 1; + } + + if (changed) { + /* + * set the IBC maxpktlength to the size of our pio + * buffers in words + */ + u64 ibc = dd->ipath_ibcctrl; + ibc &= ~(INFINIPATH_IBCC_MAXPKTLEN_MASK << + INFINIPATH_IBCC_MAXPKTLEN_SHIFT); + + piosize = piosize - 2 * sizeof(u32); /* ignore pbc */ + dd->ipath_ibmaxlen = piosize; + piosize /= sizeof(u32); /* in words */ + /* + * for ICRC, which we only send in diag test pkt mode, and + * we don't need to worry about that for mtu + */ + piosize += 1; + + ibc |= piosize << INFINIPATH_IBCC_MAXPKTLEN_SHIFT; + dd->ipath_ibcctrl = ibc; + ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, + dd->ipath_ibcctrl); + dd->ipath_f_tidtemplate(dd); + } + + ret = 0; + +bail: + return ret; +} + +int ipath_set_lid(struct ipath_devdata *dd, u32 arg, u8 lmc) +{ + dd->ipath_lid = arg; + dd->ipath_lmc = lmc; + + return 0; +} + /** * ipath_read_kreg64_port - read a device's per-port 64-bit kernel register * @dd: the infinipath device @@ -1628,17 +1865,10 @@ void ipath_shutdown_device(struct ipath_devdata *dd) ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKINITCMD_DISABLE << INFINIPATH_IBCC_LINKINITCMD_SHIFT); - /* - * we are shutting down, so tell the layered driver. We don't do - * this on just a link state change, much like ethernet, a cable - * unplug, etc. doesn't change driver state - */ - ipath_layer_intr(dd, IPATH_LAYER_INT_IF_DOWN); - /* disable IBC */ dd->ipath_control &= ~INFINIPATH_C_LINKENABLE; ipath_write_kreg(dd, dd->ipath_kregs->kr_control, - dd->ipath_control); + dd->ipath_control | INFINIPATH_C_FREEZEMODE); /* * clear SerdesEnable and turn the leds off; do this here because @@ -1667,82 +1897,82 @@ void ipath_shutdown_device(struct ipath_devdata *dd) /** * ipath_free_pddata - free a port's allocated data * @dd: the infinipath device - * @port: the port - * @freehdrq: free the port data structure if true + * @pd: the portdata structure * - * when closing, free up any allocated data for a port, if the - * reference count goes to zero - * Note: this also optionally frees the portdata itself! - * Any changes here have to be matched up with the reinit case - * of ipath_init_chip(), which calls this routine on reinit after reset. + * free up any allocated data for a port + * This should not touch anything that would affect a simultaneous + * re-allocation of port data, because it is called after ipath_mutex + * is released (and can be called from reinit as well). + * It should never change any chip state, or global driver state. + * (The only exception to global state is freeing the port0 port0_skbs.) */ -void ipath_free_pddata(struct ipath_devdata *dd, u32 port, int freehdrq) +void ipath_free_pddata(struct ipath_devdata *dd, struct ipath_portdata *pd) { - struct ipath_portdata *pd = dd->ipath_pd[port]; - if (!pd) return; - if (freehdrq) - /* - * only clear and free portdata if we are going to also - * release the hdrq, otherwise we leak the hdrq on each - * open/close cycle - */ - dd->ipath_pd[port] = NULL; - if (freehdrq && pd->port_rcvhdrq) { + + if (pd->port_rcvhdrq) { ipath_cdbg(VERBOSE, "free closed port %d rcvhdrq @ %p " "(size=%lu)\n", pd->port_port, pd->port_rcvhdrq, (unsigned long) pd->port_rcvhdrq_size); dma_free_coherent(&dd->pcidev->dev, pd->port_rcvhdrq_size, pd->port_rcvhdrq, pd->port_rcvhdrq_phys); pd->port_rcvhdrq = NULL; + if (pd->port_rcvhdrtail_kvaddr) { + dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE, + pd->port_rcvhdrtail_kvaddr, + pd->port_rcvhdrqtailaddr_phys); + pd->port_rcvhdrtail_kvaddr = NULL; + } } - if (port && pd->port_rcvegrbuf) { - /* always free this */ - if (pd->port_rcvegrbuf) { - unsigned e; - - for (e = 0; e < pd->port_rcvegrbuf_chunks; e++) { - void *base = pd->port_rcvegrbuf[e]; - size_t size = pd->port_rcvegrbuf_size; - - ipath_cdbg(VERBOSE, "egrbuf free(%p, %lu), " - "chunk %u/%u\n", base, - (unsigned long) size, - e, pd->port_rcvegrbuf_chunks); - dma_free_coherent( - &dd->pcidev->dev, size, base, - pd->port_rcvegrbuf_phys[e]); - } - vfree(pd->port_rcvegrbuf); - pd->port_rcvegrbuf = NULL; - vfree(pd->port_rcvegrbuf_phys); - pd->port_rcvegrbuf_phys = NULL; + if (pd->port_port && pd->port_rcvegrbuf) { + unsigned e; + + for (e = 0; e < pd->port_rcvegrbuf_chunks; e++) { + void *base = pd->port_rcvegrbuf[e]; + size_t size = pd->port_rcvegrbuf_size; + + ipath_cdbg(VERBOSE, "egrbuf free(%p, %lu), " + "chunk %u/%u\n", base, + (unsigned long) size, + e, pd->port_rcvegrbuf_chunks); + dma_free_coherent(&dd->pcidev->dev, size, + base, pd->port_rcvegrbuf_phys[e]); } + kfree(pd->port_rcvegrbuf); + pd->port_rcvegrbuf = NULL; + kfree(pd->port_rcvegrbuf_phys); + pd->port_rcvegrbuf_phys = NULL; pd->port_rcvegrbuf_chunks = 0; - } else if (port == 0 && dd->ipath_port0_skbs) { + } else if (pd->port_port == 0 && dd->ipath_port0_skbinfo) { unsigned e; - struct sk_buff **skbs = dd->ipath_port0_skbs; + struct ipath_skbinfo *skbinfo = dd->ipath_port0_skbinfo; - dd->ipath_port0_skbs = NULL; - ipath_cdbg(VERBOSE, "free closed port %d ipath_port0_skbs " - "@ %p\n", pd->port_port, skbs); + dd->ipath_port0_skbinfo = NULL; + ipath_cdbg(VERBOSE, "free closed port %d " + "ipath_port0_skbinfo @ %p\n", pd->port_port, + skbinfo); for (e = 0; e < dd->ipath_rcvegrcnt; e++) - if (skbs[e]) - dev_kfree_skb(skbs[e]); - vfree(skbs); - } - if (freehdrq) { - kfree(pd->port_tid_pg_list); - kfree(pd); + if (skbinfo[e].skb) { + pci_unmap_single(dd->pcidev, skbinfo[e].phys, + dd->ipath_ibmaxlen, + PCI_DMA_FROMDEVICE); + dev_kfree_skb(skbinfo[e].skb); + } + vfree(skbinfo); } + kfree(pd->port_tid_pg_list); + vfree(pd->subport_uregbase); + vfree(pd->subport_rcvegrbuf); + vfree(pd->subport_rcvhdr_base); + kfree(pd); } static int __init infinipath_init(void) { int ret; - ipath_dbg(KERN_INFO DRIVER_LOAD_MSG "%s", ipath_core_version); + ipath_dbg(KERN_INFO DRIVER_LOAD_MSG "%s", ib_ipath_version); /* * These must be called before the driver is registered with @@ -1775,8 +2005,18 @@ static int __init infinipath_init(void) goto bail_group; } + ret = ipath_diagpkt_add(); + if (ret < 0) { + printk(KERN_ERR IPATH_DRV_NAME ": Unable to create " + "diag data device: error %d\n", -ret); + goto bail_ipathfs; + } + goto bail; +bail_ipathfs: + ipath_exit_ipathfs(); + bail_group: ipath_driver_remove_group(&ipath_driver.driver); @@ -1790,139 +2030,12 @@ bail: return ret; } -static void cleanup_device(struct ipath_devdata *dd) -{ - int port; - - ipath_shutdown_device(dd); - - if (*dd->ipath_statusp & IPATH_STATUS_CHIP_PRESENT) { - /* can't do anything more with chip; needs re-init */ - *dd->ipath_statusp &= ~IPATH_STATUS_CHIP_PRESENT; - if (dd->ipath_kregbase) { - /* - * if we haven't already cleaned up before these are - * to ensure any register reads/writes "fail" until - * re-init - */ - dd->ipath_kregbase = NULL; - dd->ipath_kregvirt = NULL; - dd->ipath_uregbase = 0; - dd->ipath_sregbase = 0; - dd->ipath_cregbase = 0; - dd->ipath_kregsize = 0; - } - ipath_disable_wc(dd); - } - - if (dd->ipath_pioavailregs_dma) { - dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE, - (void *) dd->ipath_pioavailregs_dma, - dd->ipath_pioavailregs_phys); - dd->ipath_pioavailregs_dma = NULL; - } - - if (dd->ipath_pageshadow) { - struct page **tmpp = dd->ipath_pageshadow; - int i, cnt = 0; - - ipath_cdbg(VERBOSE, "Unlocking any expTID pages still " - "locked\n"); - for (port = 0; port < dd->ipath_cfgports; port++) { - int port_tidbase = port * dd->ipath_rcvtidcnt; - int maxtid = port_tidbase + dd->ipath_rcvtidcnt; - for (i = port_tidbase; i < maxtid; i++) { - if (!tmpp[i]) - continue; - ipath_release_user_pages(&tmpp[i], 1); - tmpp[i] = NULL; - cnt++; - } - } - if (cnt) { - ipath_stats.sps_pageunlocks += cnt; - ipath_cdbg(VERBOSE, "There were still %u expTID " - "entries locked\n", cnt); - } - if (ipath_stats.sps_pagelocks || - ipath_stats.sps_pageunlocks) - ipath_cdbg(VERBOSE, "%llu pages locked, %llu " - "unlocked via ipath_m{un}lock\n", - (unsigned long long) - ipath_stats.sps_pagelocks, - (unsigned long long) - ipath_stats.sps_pageunlocks); - - ipath_cdbg(VERBOSE, "Free shadow page tid array at %p\n", - dd->ipath_pageshadow); - vfree(dd->ipath_pageshadow); - dd->ipath_pageshadow = NULL; - } - - /* - * free any resources still in use (usually just kernel ports) - * at unload - */ - for (port = 0; port < dd->ipath_cfgports; port++) - ipath_free_pddata(dd, port, 1); - kfree(dd->ipath_pd); - /* - * debuggability, in case some cleanup path tries to use it - * after this - */ - dd->ipath_pd = NULL; -} - static void __exit infinipath_cleanup(void) { - struct ipath_devdata *dd, *tmp; - unsigned long flags; - ipath_exit_ipathfs(); ipath_driver_remove_group(&ipath_driver.driver); - spin_lock_irqsave(&ipath_devs_lock, flags); - - /* - * turn off rcv, send, and interrupts for all ports, all drivers - * should also hard reset the chip here? - * free up port 0 (kernel) rcvhdr, egr bufs, and eventually tid bufs - * for all versions of the driver, if they were allocated - */ - list_for_each_entry_safe(dd, tmp, &ipath_dev_list, ipath_list) { - spin_unlock_irqrestore(&ipath_devs_lock, flags); - - if (dd->ipath_kregbase) - cleanup_device(dd); - - if (dd->pcidev) { - if (dd->pcidev->irq) { - ipath_cdbg(VERBOSE, - "unit %u free_irq of irq %x\n", - dd->ipath_unit, dd->pcidev->irq); - free_irq(dd->pcidev->irq, dd); - } else - ipath_dbg("irq is 0, not doing free_irq " - "for unit %u\n", dd->ipath_unit); - - /* - * we check for NULL here, because it's outside - * the kregbase check, and we need to call it - * after the free_irq. Thus it's possible that - * the function pointers were never initialized. - */ - if (dd->ipath_f_cleanup) - /* clean up chip-specific stuff */ - dd->ipath_f_cleanup(dd); - - dd->pcidev = NULL; - } - spin_lock_irqsave(&ipath_devs_lock, flags); - } - - spin_unlock_irqrestore(&ipath_devs_lock, flags); - ipath_cdbg(VERBOSE, "Unregistering pci driver\n"); pci_unregister_driver(&ipath_driver); @@ -1988,5 +2101,22 @@ bail: return ret; } +int ipath_set_rx_pol_inv(struct ipath_devdata *dd, u8 new_pol_inv) +{ + u64 val; + if ( new_pol_inv > INFINIPATH_XGXS_RX_POL_MASK ) { + return -1; + } + if ( dd->ipath_rx_pol_inv != new_pol_inv ) { + dd->ipath_rx_pol_inv = new_pol_inv; + val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig); + val &= ~(INFINIPATH_XGXS_RX_POL_MASK << + INFINIPATH_XGXS_RX_POL_SHIFT); + val |= ((u64)dd->ipath_rx_pol_inv) << + INFINIPATH_XGXS_RX_POL_SHIFT; + ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val); + } + return 0; +} module_init(infinipath_init); module_exit(infinipath_cleanup); diff --git a/drivers/infiniband/hw/ipath/ipath_eeprom.c b/drivers/infiniband/hw/ipath/ipath_eeprom.c index a2f1ceafcca9..a4019a6b7560 100644 --- a/drivers/infiniband/hw/ipath/ipath_eeprom.c +++ b/drivers/infiniband/hw/ipath/ipath_eeprom.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -99,9 +100,9 @@ static int i2c_gpio_set(struct ipath_devdata *dd, gpioval = &dd->ipath_gpio_out; read_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extctrl); if (line == i2c_line_scl) - mask = ipath_gpio_scl; + mask = dd->ipath_gpio_scl; else - mask = ipath_gpio_sda; + mask = dd->ipath_gpio_sda; if (new_line_state == i2c_line_high) /* tri-state the output rather than force high */ @@ -118,12 +119,12 @@ static int i2c_gpio_set(struct ipath_devdata *dd, write_val = 0x0UL; if (line == i2c_line_scl) { - write_val <<= ipath_gpio_scl_num; - *gpioval = *gpioval & ~(1UL << ipath_gpio_scl_num); + write_val <<= dd->ipath_gpio_scl_num; + *gpioval = *gpioval & ~(1UL << dd->ipath_gpio_scl_num); *gpioval |= write_val; } else { - write_val <<= ipath_gpio_sda_num; - *gpioval = *gpioval & ~(1UL << ipath_gpio_sda_num); + write_val <<= dd->ipath_gpio_sda_num; + *gpioval = *gpioval & ~(1UL << dd->ipath_gpio_sda_num); *gpioval |= write_val; } ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_out, *gpioval); @@ -156,9 +157,9 @@ static int i2c_gpio_get(struct ipath_devdata *dd, read_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extctrl); /* config line to be an input */ if (line == i2c_line_scl) - mask = ipath_gpio_scl; + mask = dd->ipath_gpio_scl; else - mask = ipath_gpio_sda; + mask = dd->ipath_gpio_sda; write_val = read_val & ~mask; ipath_write_kreg(dd, dd->ipath_kregs->kr_extctrl, write_val); read_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extstatus); @@ -186,6 +187,7 @@ bail: static void i2c_wait_for_writes(struct ipath_devdata *dd) { (void)ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch); + rmb(); } static void scl_out(struct ipath_devdata *dd, u8 bit) @@ -600,8 +602,31 @@ void ipath_get_eeprom_info(struct ipath_devdata *dd) guid = *(__be64 *) ifp->if_guid; dd->ipath_guid = guid; dd->ipath_nguid = ifp->if_numguid; - memcpy(dd->ipath_serial, ifp->if_serial, - sizeof(ifp->if_serial)); + /* + * Things are slightly complicated by the desire to transparently + * support both the Pathscale 10-digit serial number and the QLogic + * 13-character version. + */ + if ((ifp->if_fversion > 1) && ifp->if_sprefix[0] + && ((u8 *)ifp->if_sprefix)[0] != 0xFF) { + /* This board has a Serial-prefix, which is stored + * elsewhere for backward-compatibility. + */ + char *snp = dd->ipath_serial; + int len; + memcpy(snp, ifp->if_sprefix, sizeof ifp->if_sprefix); + snp[sizeof ifp->if_sprefix] = '\0'; + len = strlen(snp); + snp += len; + len = (sizeof dd->ipath_serial) - len; + if (len > sizeof ifp->if_serial) { + len = sizeof ifp->if_serial; + } + memcpy(snp, ifp->if_serial, len); + } else + memcpy(dd->ipath_serial, ifp->if_serial, + sizeof ifp->if_serial); + ipath_cdbg(VERBOSE, "Initted GUID to %llx from eeprom\n", (unsigned long long) be64_to_cpu(dd->ipath_guid)); diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c index ada267e41f6c..a9ddc6911f66 100644 --- a/drivers/infiniband/hw/ipath/ipath_file_ops.c +++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -38,8 +39,13 @@ #include <asm/pgtable.h> #include "ipath_kernel.h" -#include "ips_common.h" -#include "ipath_layer.h" +#include "ipath_common.h" + +/* + * mmap64 doesn't allow all 64 bits for 32-bit applications + * so only use the low 43 bits. + */ +#define MMAP64_MASK 0x7FFFFFFFFFFUL static int ipath_open(struct inode *, struct file *); static int ipath_close(struct inode *, struct file *); @@ -57,18 +63,35 @@ static struct file_operations ipath_file_ops = { .mmap = ipath_mmap }; -static int ipath_get_base_info(struct ipath_portdata *pd, +static int ipath_get_base_info(struct file *fp, void __user *ubase, size_t ubase_size) { + struct ipath_portdata *pd = port_fp(fp); int ret = 0; struct ipath_base_info *kinfo = NULL; struct ipath_devdata *dd = pd->port_dd; + unsigned subport_cnt; + int shared, master; + size_t sz; + + subport_cnt = pd->port_subport_cnt; + if (!subport_cnt) { + shared = 0; + master = 0; + subport_cnt = 1; + } else { + shared = 1; + master = !subport_fp(fp); + } - if (ubase_size < sizeof(*kinfo)) { + sz = sizeof(*kinfo); + /* If port sharing is not requested, allow the old size structure */ + if (!shared) + sz -= 3 * sizeof(u64); + if (ubase_size < sz) { ipath_cdbg(PROC, - "Base size %lu, need %lu (version mismatch?)\n", - (unsigned long) ubase_size, - (unsigned long) sizeof(*kinfo)); + "Base size %zu, need %zu (version mismatch?)\n", + ubase_size, sz); ret = -EINVAL; goto bail; } @@ -95,7 +118,9 @@ static int ipath_get_base_info(struct ipath_portdata *pd, kinfo->spi_rcv_egrperchunk = pd->port_rcvegrbufs_perchunk; kinfo->spi_rcv_egrchunksize = kinfo->spi_rcv_egrbuftotlen / pd->port_rcvegrbuf_chunks; - kinfo->spi_tidcnt = dd->ipath_rcvtidcnt; + kinfo->spi_tidcnt = dd->ipath_rcvtidcnt / subport_cnt; + if (master) + kinfo->spi_tidcnt += dd->ipath_rcvtidcnt % subport_cnt; /* * for this use, may be ipath_cfgports summed over all chips that * are are configured and present @@ -118,30 +143,75 @@ static int ipath_get_base_info(struct ipath_portdata *pd, * page_address() macro worked, but in 2.6.11, even that returns the * full 64 bit address (upper bits all 1's). So far, using the * physical addresses (or chip offsets, for chip mapping) works, but - * no doubt some future kernel release will chang that, and we'll be - * on to yet another method of dealing with this + * no doubt some future kernel release will change that, and we'll be + * on to yet another method of dealing with this. */ kinfo->spi_rcvhdr_base = (u64) pd->port_rcvhdrq_phys; + kinfo->spi_rcvhdr_tailaddr = (u64) pd->port_rcvhdrqtailaddr_phys; kinfo->spi_rcv_egrbufs = (u64) pd->port_rcvegr_phys; kinfo->spi_pioavailaddr = (u64) dd->ipath_pioavailregs_phys; kinfo->spi_status = (u64) kinfo->spi_pioavailaddr + (void *) dd->ipath_statusp - (void *) dd->ipath_pioavailregs_dma; - kinfo->spi_piobufbase = (u64) pd->port_piobufs; - kinfo->__spi_uregbase = - dd->ipath_uregbase + dd->ipath_palign * pd->port_port; + if (!shared) { + kinfo->spi_piocnt = dd->ipath_pbufsport; + kinfo->spi_piobufbase = (u64) pd->port_piobufs; + kinfo->__spi_uregbase = (u64) dd->ipath_uregbase + + dd->ipath_palign * pd->port_port; + } else if (master) { + kinfo->spi_piocnt = (dd->ipath_pbufsport / subport_cnt) + + (dd->ipath_pbufsport % subport_cnt); + /* Master's PIO buffers are after all the slave's */ + kinfo->spi_piobufbase = (u64) pd->port_piobufs + + dd->ipath_palign * + (dd->ipath_pbufsport - kinfo->spi_piocnt); + kinfo->__spi_uregbase = (u64) dd->ipath_uregbase + + dd->ipath_palign * pd->port_port; + } else { + unsigned slave = subport_fp(fp) - 1; + + kinfo->spi_piocnt = dd->ipath_pbufsport / subport_cnt; + kinfo->spi_piobufbase = (u64) pd->port_piobufs + + dd->ipath_palign * kinfo->spi_piocnt * slave; + kinfo->__spi_uregbase = ((u64) pd->subport_uregbase + + PAGE_SIZE * slave) & MMAP64_MASK; - kinfo->spi_pioindex = dd->ipath_pbufsport * (pd->port_port - 1); - kinfo->spi_piocnt = dd->ipath_pbufsport; + kinfo->spi_rcvhdr_base = ((u64) pd->subport_rcvhdr_base + + pd->port_rcvhdrq_size * slave) & MMAP64_MASK; + kinfo->spi_rcvhdr_tailaddr = + (u64) pd->port_rcvhdrqtailaddr_phys & MMAP64_MASK; + kinfo->spi_rcv_egrbufs = ((u64) pd->subport_rcvegrbuf + + dd->ipath_rcvegrcnt * dd->ipath_rcvegrbufsize * slave) & + MMAP64_MASK; + } + + kinfo->spi_pioindex = (kinfo->spi_piobufbase - dd->ipath_piobufbase) / + dd->ipath_palign; kinfo->spi_pioalign = dd->ipath_palign; kinfo->spi_qpair = IPATH_KD_QP; kinfo->spi_piosize = dd->ipath_ibmaxlen; kinfo->spi_mtu = dd->ipath_ibmaxlen; /* maxlen, not ibmtu */ kinfo->spi_port = pd->port_port; + kinfo->spi_subport = subport_fp(fp); kinfo->spi_sw_version = IPATH_KERN_SWVERSION; kinfo->spi_hw_version = dd->ipath_revision; + if (master) { + kinfo->spi_runtime_flags |= IPATH_RUNTIME_MASTER; + kinfo->spi_subport_uregbase = + (u64) pd->subport_uregbase & MMAP64_MASK; + kinfo->spi_subport_rcvegrbuf = + (u64) pd->subport_rcvegrbuf & MMAP64_MASK; + kinfo->spi_subport_rcvhdr_base = + (u64) pd->subport_rcvhdr_base & MMAP64_MASK; + ipath_cdbg(PROC, "port %u flags %x %llx %llx %llx\n", + kinfo->spi_port, kinfo->spi_runtime_flags, + (unsigned long long) kinfo->spi_subport_uregbase, + (unsigned long long) kinfo->spi_subport_rcvegrbuf, + (unsigned long long) kinfo->spi_subport_rcvhdr_base); + } + if (copy_to_user(ubase, kinfo, sizeof(*kinfo))) ret = -EFAULT; @@ -153,6 +223,7 @@ bail: /** * ipath_tid_update - update a port TID * @pd: the port + * @fp: the ipath device file * @ti: the TID information * * The new implementation as of Oct 2004 is that the driver assigns @@ -175,11 +246,11 @@ bail: * virtually contiguous pages, that should change to improve * performance. */ -static int ipath_tid_update(struct ipath_portdata *pd, +static int ipath_tid_update(struct ipath_portdata *pd, struct file *fp, const struct ipath_tid_info *ti) { int ret = 0, ntids; - u32 tid, porttid, cnt, i, tidcnt; + u32 tid, porttid, cnt, i, tidcnt, tidoff; u16 *tidlist; struct ipath_devdata *dd = pd->port_dd; u64 physaddr; @@ -187,6 +258,7 @@ static int ipath_tid_update(struct ipath_portdata *pd, u64 __iomem *tidbase; unsigned long tidmap[8]; struct page **pagep = NULL; + unsigned subport = subport_fp(fp); if (!dd->ipath_pageshadow) { ret = -ENOMEM; @@ -203,20 +275,34 @@ static int ipath_tid_update(struct ipath_portdata *pd, ret = -EFAULT; goto done; } - tidcnt = dd->ipath_rcvtidcnt; - if (cnt >= tidcnt) { + porttid = pd->port_port * dd->ipath_rcvtidcnt; + if (!pd->port_subport_cnt) { + tidcnt = dd->ipath_rcvtidcnt; + tid = pd->port_tidcursor; + tidoff = 0; + } else if (!subport) { + tidcnt = (dd->ipath_rcvtidcnt / pd->port_subport_cnt) + + (dd->ipath_rcvtidcnt % pd->port_subport_cnt); + tidoff = dd->ipath_rcvtidcnt - tidcnt; + porttid += tidoff; + tid = tidcursor_fp(fp); + } else { + tidcnt = dd->ipath_rcvtidcnt / pd->port_subport_cnt; + tidoff = tidcnt * (subport - 1); + porttid += tidoff; + tid = tidcursor_fp(fp); + } + if (cnt > tidcnt) { /* make sure it all fits in port_tid_pg_list */ dev_info(&dd->pcidev->dev, "Process tried to allocate %u " "TIDs, only trying max (%u)\n", cnt, tidcnt); cnt = tidcnt; } - pagep = (struct page **)pd->port_tid_pg_list; - tidlist = (u16 *) (&pagep[cnt]); + pagep = &((struct page **) pd->port_tid_pg_list)[tidoff]; + tidlist = &((u16 *) &pagep[dd->ipath_rcvtidcnt])[tidoff]; memset(tidmap, 0, sizeof(tidmap)); - tid = pd->port_tidcursor; /* before decrement; chip actual # */ - porttid = pd->port_port * tidcnt; ntids = tidcnt; tidbase = (u64 __iomem *) (((char __iomem *) dd->ipath_kregbase) + dd->ipath_rcvtidbase + @@ -273,16 +359,19 @@ static int ipath_tid_update(struct ipath_portdata *pd, ret = -ENOMEM; break; } - tidlist[i] = tid; + tidlist[i] = tid + tidoff; ipath_cdbg(VERBOSE, "Updating idx %u to TID %u, " - "vaddr %lx\n", i, tid, vaddr); + "vaddr %lx\n", i, tid + tidoff, vaddr); /* we "know" system pages and TID pages are same size */ dd->ipath_pageshadow[porttid + tid] = pagep[i]; + dd->ipath_physshadow[porttid + tid] = ipath_map_page( + dd->pcidev, pagep[i], 0, PAGE_SIZE, + PCI_DMA_FROMDEVICE); /* * don't need atomic or it's overhead */ __set_bit(tid, tidmap); - physaddr = page_to_phys(pagep[i]); + physaddr = dd->ipath_physshadow[porttid + tid]; ipath_stats.sps_pagelocks++; ipath_cdbg(VERBOSE, "TID %u, vaddr %lx, physaddr %llx pgp %p\n", @@ -316,6 +405,9 @@ static int ipath_tid_update(struct ipath_portdata *pd, tid); dd->ipath_f_put_tid(dd, &tidbase[tid], 1, dd->ipath_tidinvalid); + pci_unmap_page(dd->pcidev, + dd->ipath_physshadow[porttid + tid], + PAGE_SIZE, PCI_DMA_FROMDEVICE); dd->ipath_pageshadow[porttid + tid] = NULL; ipath_stats.sps_pageunlocks++; } @@ -340,7 +432,10 @@ static int ipath_tid_update(struct ipath_portdata *pd, } if (tid == tidcnt) tid = 0; - pd->port_tidcursor = tid; + if (!pd->port_subport_cnt) + pd->port_tidcursor = tid; + else + tidcursor_fp(fp) = tid; } done: @@ -353,6 +448,7 @@ done: /** * ipath_tid_free - free a port TID * @pd: the port + * @subport: the subport * @ti: the TID info * * right now we are unlocking one page at a time, but since @@ -366,7 +462,7 @@ done: * they pass in to us. */ -static int ipath_tid_free(struct ipath_portdata *pd, +static int ipath_tid_free(struct ipath_portdata *pd, unsigned subport, const struct ipath_tid_info *ti) { int ret = 0; @@ -387,11 +483,20 @@ static int ipath_tid_free(struct ipath_portdata *pd, } porttid = pd->port_port * dd->ipath_rcvtidcnt; + if (!pd->port_subport_cnt) + tidcnt = dd->ipath_rcvtidcnt; + else if (!subport) { + tidcnt = (dd->ipath_rcvtidcnt / pd->port_subport_cnt) + + (dd->ipath_rcvtidcnt % pd->port_subport_cnt); + porttid += dd->ipath_rcvtidcnt - tidcnt; + } else { + tidcnt = dd->ipath_rcvtidcnt / pd->port_subport_cnt; + porttid += tidcnt * (subport - 1); + } tidbase = (u64 __iomem *) ((char __iomem *)(dd->ipath_kregbase) + dd->ipath_rcvtidbase + porttid * sizeof(*tidbase)); - tidcnt = dd->ipath_rcvtidcnt; limit = sizeof(tidmap) * BITS_PER_BYTE; if (limit > tidcnt) /* just in case size changes in future */ @@ -416,6 +521,9 @@ static int ipath_tid_free(struct ipath_portdata *pd, pd->port_pid, tid); dd->ipath_f_put_tid(dd, &tidbase[tid], 1, dd->ipath_tidinvalid); + pci_unmap_page(dd->pcidev, + dd->ipath_physshadow[porttid + tid], + PAGE_SIZE, PCI_DMA_FROMDEVICE); ipath_release_user_pages( &dd->ipath_pageshadow[porttid + tid], 1); dd->ipath_pageshadow[porttid + tid] = NULL; @@ -456,7 +564,7 @@ static int ipath_set_part_key(struct ipath_portdata *pd, u16 key) u16 lkey = key & 0x7FFF; int ret; - if (lkey == (IPS_DEFAULT_P_KEY & 0x7FFF)) { + if (lkey == (IPATH_DEFAULT_P_KEY & 0x7FFF)) { /* nothing to do; this key always valid */ ret = 0; goto bail; @@ -580,20 +688,24 @@ bail: /** * ipath_manage_rcvq - manage a port's receive queue * @pd: the port + * @subport: the subport * @start_stop: action to carry out * * start_stop == 0 disables receive on the port, for use in queue * overflow conditions. start_stop==1 re-enables, to be used to * re-init the software copy of the head register */ -static int ipath_manage_rcvq(struct ipath_portdata *pd, int start_stop) +static int ipath_manage_rcvq(struct ipath_portdata *pd, unsigned subport, + int start_stop) { struct ipath_devdata *dd = pd->port_dd; u64 tval; - ipath_cdbg(PROC, "%sabling rcv for unit %u port %u\n", + ipath_cdbg(PROC, "%sabling rcv for unit %u port %u:%u\n", start_stop ? "en" : "dis", dd->ipath_unit, - pd->port_port); + pd->port_port, subport); + if (subport) + goto bail; /* atomically clear receive enable port. */ if (start_stop) { /* @@ -608,7 +720,7 @@ static int ipath_manage_rcvq(struct ipath_portdata *pd, int start_stop) * updated and correct itself, even in the face of software * bugs. */ - *pd->port_rcvhdrtail_kvaddr = 0; + *(volatile u64 *)pd->port_rcvhdrtail_kvaddr = 0; set_bit(INFINIPATH_R_PORTENABLE_SHIFT + pd->port_port, &dd->ipath_rcvctrl); } else @@ -629,6 +741,7 @@ static int ipath_manage_rcvq(struct ipath_portdata *pd, int start_stop) tval = ipath_read_ureg32(dd, ur_rcvhdrtail, pd->port_port); } /* always; new head should be equal to new tail; see above */ +bail: return 0; } @@ -686,6 +799,36 @@ static void ipath_clean_part_key(struct ipath_portdata *pd, } } +/* + * Initialize the port data with the receive buffer sizes + * so this can be done while the master port is locked. + * Otherwise, there is a race with a slave opening the port + * and seeing these fields uninitialized. + */ +static void init_user_egr_sizes(struct ipath_portdata *pd) +{ + struct ipath_devdata *dd = pd->port_dd; + unsigned egrperchunk, egrcnt, size; + + /* + * to avoid wasting a lot of memory, we allocate 32KB chunks of + * physically contiguous memory, advance through it until used up + * and then allocate more. Of course, we need memory to store those + * extra pointers, now. Started out with 256KB, but under heavy + * memory pressure (creating large files and then copying them over + * NFS while doing lots of MPI jobs), we hit some allocation + * failures, even though we can sleep... (2.6.10) Still get + * failures at 64K. 32K is the lowest we can go without wasting + * additional memory. + */ + size = 0x8000; + egrperchunk = size / dd->ipath_rcvegrbufsize; + egrcnt = dd->ipath_rcvegrcnt; + pd->port_rcvegrbuf_chunks = (egrcnt + egrperchunk - 1) / egrperchunk; + pd->port_rcvegrbufs_perchunk = egrperchunk; + pd->port_rcvegrbuf_size = size; +} + /** * ipath_create_user_egr - allocate eager TID buffers * @pd: the port to allocate TID buffers for @@ -701,9 +844,18 @@ static void ipath_clean_part_key(struct ipath_portdata *pd, static int ipath_create_user_egr(struct ipath_portdata *pd) { struct ipath_devdata *dd = pd->port_dd; - unsigned e, egrcnt, alloced, egrperchunk, chunk, egrsize, egroff; + unsigned e, egrcnt, egrperchunk, chunk, egrsize, egroff; size_t size; int ret; + gfp_t gfp_flags; + + /* + * GFP_USER, but without GFP_FS, so buffer cache can be + * coalesced (we hope); otherwise, even at order 4, + * heavy filesystem activity makes these fail, and we can + * use compound pages. + */ + gfp_flags = __GFP_WAIT | __GFP_IO | __GFP_COMP; egrcnt = dd->ipath_rcvegrcnt; /* TID number offset for this port */ @@ -712,44 +864,23 @@ static int ipath_create_user_egr(struct ipath_portdata *pd) ipath_cdbg(VERBOSE, "Allocating %d egr buffers, at egrtid " "offset %x, egrsize %u\n", egrcnt, egroff, egrsize); - /* - * to avoid wasting a lot of memory, we allocate 32KB chunks of - * physically contiguous memory, advance through it until used up - * and then allocate more. Of course, we need memory to store those - * extra pointers, now. Started out with 256KB, but under heavy - * memory pressure (creating large files and then copying them over - * NFS while doing lots of MPI jobs), we hit some allocation - * failures, even though we can sleep... (2.6.10) Still get - * failures at 64K. 32K is the lowest we can go without waiting - * more memory again. It seems likely that the coalescing in - * free_pages, etc. still has issues (as it has had previously - * during 2.6.x development). - */ - size = 0x8000; - alloced = ALIGN(egrsize * egrcnt, size); - egrperchunk = size / egrsize; - chunk = (egrcnt + egrperchunk - 1) / egrperchunk; - pd->port_rcvegrbuf_chunks = chunk; - pd->port_rcvegrbufs_perchunk = egrperchunk; - pd->port_rcvegrbuf_size = size; - pd->port_rcvegrbuf = vmalloc(chunk * sizeof(pd->port_rcvegrbuf[0])); + chunk = pd->port_rcvegrbuf_chunks; + egrperchunk = pd->port_rcvegrbufs_perchunk; + size = pd->port_rcvegrbuf_size; + pd->port_rcvegrbuf = kmalloc(chunk * sizeof(pd->port_rcvegrbuf[0]), + GFP_KERNEL); if (!pd->port_rcvegrbuf) { ret = -ENOMEM; goto bail; } pd->port_rcvegrbuf_phys = - vmalloc(chunk * sizeof(pd->port_rcvegrbuf_phys[0])); + kmalloc(chunk * sizeof(pd->port_rcvegrbuf_phys[0]), + GFP_KERNEL); if (!pd->port_rcvegrbuf_phys) { ret = -ENOMEM; goto bail_rcvegrbuf; } for (e = 0; e < pd->port_rcvegrbuf_chunks; e++) { - /* - * GFP_USER, but without GFP_FS, so buffer cache can be - * coalesced (we hope); otherwise, even at order 4, - * heavy filesystem activity makes these fail - */ - gfp_t gfp_flags = __GFP_WAIT | __GFP_IO | __GFP_COMP; pd->port_rcvegrbuf[e] = dma_alloc_coherent( &dd->pcidev->dev, size, &pd->port_rcvegrbuf_phys[e], @@ -783,154 +914,63 @@ static int ipath_create_user_egr(struct ipath_portdata *pd) bail_rcvegrbuf_phys: for (e = 0; e < pd->port_rcvegrbuf_chunks && - pd->port_rcvegrbuf[e]; e++) + pd->port_rcvegrbuf[e]; e++) { dma_free_coherent(&dd->pcidev->dev, size, pd->port_rcvegrbuf[e], pd->port_rcvegrbuf_phys[e]); - vfree(pd->port_rcvegrbuf_phys); + } + kfree(pd->port_rcvegrbuf_phys); pd->port_rcvegrbuf_phys = NULL; bail_rcvegrbuf: - vfree(pd->port_rcvegrbuf); + kfree(pd->port_rcvegrbuf); pd->port_rcvegrbuf = NULL; bail: return ret; } -static int ipath_do_user_init(struct ipath_portdata *pd, - const struct ipath_user_info *uinfo) + +/* common code for the mappings on dma_alloc_coherent mem */ +static int ipath_mmap_mem(struct vm_area_struct *vma, + struct ipath_portdata *pd, unsigned len, int write_ok, + void *kvaddr, char *what) { - int ret = 0; struct ipath_devdata *dd = pd->port_dd; - u64 physaddr, uaddr, off, atmp; - struct page *pagep; - u32 head32; - u64 head; + unsigned long pfn; + int ret; - /* for now, if major version is different, bail */ - if ((uinfo->spu_userversion >> 16) != IPATH_USER_SWMAJOR) { + if ((vma->vm_end - vma->vm_start) > len) { dev_info(&dd->pcidev->dev, - "User major version %d not same as driver " - "major %d\n", uinfo->spu_userversion >> 16, - IPATH_USER_SWMAJOR); - ret = -ENODEV; - goto done; - } - - if ((uinfo->spu_userversion & 0xffff) != IPATH_USER_SWMINOR) - ipath_dbg("User minor version %d not same as driver " - "minor %d\n", uinfo->spu_userversion & 0xffff, - IPATH_USER_SWMINOR); - - if (uinfo->spu_rcvhdrsize) { - ret = ipath_setrcvhdrsize(dd, uinfo->spu_rcvhdrsize); - if (ret) - goto done; + "FAIL on %s: len %lx > %x\n", what, + vma->vm_end - vma->vm_start, len); + ret = -EFAULT; + goto bail; } - /* for now we do nothing with rcvhdrcnt: uinfo->spu_rcvhdrcnt */ - - /* set up for the rcvhdr Q tail register writeback to user memory */ - if (!uinfo->spu_rcvhdraddr || - !access_ok(VERIFY_WRITE, (u64 __user *) (unsigned long) - uinfo->spu_rcvhdraddr, sizeof(u64))) { - ipath_dbg("Port %d rcvhdrtail addr %llx not valid\n", - pd->port_port, - (unsigned long long) uinfo->spu_rcvhdraddr); - ret = -EINVAL; - goto done; - } + if (!write_ok) { + if (vma->vm_flags & VM_WRITE) { + dev_info(&dd->pcidev->dev, + "%s must be mapped readonly\n", what); + ret = -EPERM; + goto bail; + } - off = offset_in_page(uinfo->spu_rcvhdraddr); - uaddr = PAGE_MASK & (unsigned long) uinfo->spu_rcvhdraddr; - ret = ipath_get_user_pages_nocopy(uaddr, &pagep); - if (ret) { - dev_info(&dd->pcidev->dev, "Failed to lookup and lock " - "address %llx for rcvhdrtail: errno %d\n", - (unsigned long long) uinfo->spu_rcvhdraddr, -ret); - goto done; + /* don't allow them to later change with mprotect */ + vma->vm_flags &= ~VM_MAYWRITE; } - ipath_stats.sps_pagelocks++; - pd->port_rcvhdrtail_uaddr = uaddr; - pd->port_rcvhdrtail_pagep = pagep; - pd->port_rcvhdrtail_kvaddr = - page_address(pagep); - pd->port_rcvhdrtail_kvaddr += off; - physaddr = page_to_phys(pagep) + off; - ipath_cdbg(VERBOSE, "port %d user addr %llx hdrtailaddr, %llx " - "physical (off=%llx)\n", - pd->port_port, - (unsigned long long) uinfo->spu_rcvhdraddr, - (unsigned long long) physaddr, (unsigned long long) off); - ipath_write_kreg_port(dd, dd->ipath_kregs->kr_rcvhdrtailaddr, - pd->port_port, physaddr); - atmp = ipath_read_kreg64_port(dd, - dd->ipath_kregs->kr_rcvhdrtailaddr, - pd->port_port); - if (physaddr != atmp) { - ipath_dev_err(dd, - "Catastrophic software error, " - "RcvHdrTailAddr%u written as %llx, " - "read back as %llx\n", pd->port_port, - (unsigned long long) physaddr, - (unsigned long long) atmp); - ret = -EINVAL; - goto done; - } - - /* for right now, kernel piobufs are at end, so port 1 is at 0 */ - pd->port_piobufs = dd->ipath_piobufbase + - dd->ipath_pbufsport * (pd->port_port - - 1) * dd->ipath_palign; - ipath_cdbg(VERBOSE, "Set base of piobufs for port %u to 0x%x\n", - pd->port_port, pd->port_piobufs); - /* - * Now allocate the rcvhdr Q and eager TIDs; skip the TID - * array for time being. If pd->port_port > chip-supported, - * we need to do extra stuff here to handle by handling overflow - * through port 0, someday - */ - ret = ipath_create_rcvhdrq(dd, pd); - if (!ret) - ret = ipath_create_user_egr(pd); + pfn = virt_to_phys(kvaddr) >> PAGE_SHIFT; + ret = remap_pfn_range(vma, vma->vm_start, pfn, + len, vma->vm_page_prot); if (ret) - goto done; - /* enable receives now */ - /* atomically set enable bit for this port */ - set_bit(INFINIPATH_R_PORTENABLE_SHIFT + pd->port_port, - &dd->ipath_rcvctrl); - - /* - * set the head registers for this port to the current values - * of the tail pointers, since we don't know if they were - * updated on last use of the port. - */ - head32 = ipath_read_ureg32(dd, ur_rcvhdrtail, pd->port_port); - head = (u64) head32; - ipath_write_ureg(dd, ur_rcvhdrhead, head, pd->port_port); - head32 = ipath_read_ureg32(dd, ur_rcvegrindextail, pd->port_port); - ipath_write_ureg(dd, ur_rcvegrindexhead, head32, pd->port_port); - dd->ipath_lastegrheads[pd->port_port] = -1; - dd->ipath_lastrcvhdrqtails[pd->port_port] = -1; - ipath_cdbg(VERBOSE, "Wrote port%d head %llx, egrhead %x from " - "tail regs\n", pd->port_port, - (unsigned long long) head, head32); - pd->port_tidcursor = 0; /* start at beginning after open */ - /* - * now enable the port; the tail registers will be written to memory - * by the chip as soon as it sees the write to - * dd->ipath_kregs->kr_rcvctrl. The update only happens on - * transition from 0 to 1, so clear it first, then set it as part of - * enabling the port. This will (very briefly) affect any other - * open ports, but it shouldn't be long enough to be an issue. - */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl & ~INFINIPATH_R_TAILUPD); - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl); - -done: + dev_info(&dd->pcidev->dev, "%s port%u mmap of %lx, %x " + "bytes r%c failed: %d\n", what, pd->port_port, + pfn, len, write_ok?'w':'o', ret); + else + ipath_cdbg(VERBOSE, "%s port%u mmaped %lx, %x bytes " + "r%c\n", what, pd->port_port, pfn, len, + write_ok?'w':'o'); +bail: return ret; } @@ -940,8 +980,11 @@ static int mmap_ureg(struct vm_area_struct *vma, struct ipath_devdata *dd, unsigned long phys; int ret; - /* it's the real hardware, so io_remap works */ - + /* + * This is real hardware, so use io_remap. This is the mechanism + * for the user process to update the head registers for their port + * in the chip. + */ if ((vma->vm_end - vma->vm_start) > PAGE_SIZE) { dev_info(&dd->pcidev->dev, "FAIL mmap userreg: reqlen " "%lx > PAGE\n", vma->vm_end - vma->vm_start); @@ -961,44 +1004,45 @@ static int mmap_ureg(struct vm_area_struct *vma, struct ipath_devdata *dd, static int mmap_piobufs(struct vm_area_struct *vma, struct ipath_devdata *dd, - struct ipath_portdata *pd) + struct ipath_portdata *pd, + unsigned piobufs, unsigned piocnt) { unsigned long phys; int ret; /* - * When we map the PIO buffers, we want to map them as writeonly, no - * read possible. + * When we map the PIO buffers in the chip, we want to map them as + * writeonly, no read possible. This prevents access to previous + * process data, and catches users who might try to read the i/o + * space due to a bug. */ - - if ((vma->vm_end - vma->vm_start) > - (dd->ipath_pbufsport * dd->ipath_palign)) { + if ((vma->vm_end - vma->vm_start) > (piocnt * dd->ipath_palign)) { dev_info(&dd->pcidev->dev, "FAIL mmap piobufs: " "reqlen %lx > PAGE\n", vma->vm_end - vma->vm_start); - ret = -EFAULT; + ret = -EINVAL; goto bail; } - phys = dd->ipath_physaddr + pd->port_piobufs; + phys = dd->ipath_physaddr + piobufs; + /* - * Do *NOT* mark this as non-cached (PWT bit), or we don't get the + * Don't mark this as non-cached, or we don't get the * write combining behavior we want on the PIO buffers! - * vma->vm_page_prot = - * pgprot_noncached(vma->vm_page_prot); */ - if (vma->vm_flags & VM_READ) { - dev_info(&dd->pcidev->dev, - "Can't map piobufs as readable (flags=%lx)\n", - vma->vm_flags); - ret = -EPERM; - goto bail; - } - - /* don't allow them to later change to readable with mprotect */ +#if defined(__powerpc__) + /* There isn't a generic way to specify writethrough mappings */ + pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE; + pgprot_val(vma->vm_page_prot) |= _PAGE_WRITETHRU; + pgprot_val(vma->vm_page_prot) &= ~_PAGE_GUARDED; +#endif - vma->vm_flags &= ~VM_MAYWRITE; + /* + * don't allow them to later change to readable with mprotect (for when + * not initially mapped readable, as is normally the case) + */ + vma->vm_flags &= ~VM_MAYREAD; vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND; ret = io_remap_pfn_range(vma, vma->vm_start, phys >> PAGE_SHIFT, @@ -1014,14 +1058,9 @@ static int mmap_rcvegrbufs(struct vm_area_struct *vma, struct ipath_devdata *dd = pd->port_dd; unsigned long start, size; size_t total_size, i; - dma_addr_t *phys; + unsigned long pfn; int ret; - if (!pd->port_rcvegrbuf) { - ret = -EFAULT; - goto bail; - } - size = pd->port_rcvegrbuf_size; total_size = pd->port_rcvegrbuf_chunks * size; if ((vma->vm_end - vma->vm_start) > total_size) { @@ -1029,7 +1068,7 @@ static int mmap_rcvegrbufs(struct vm_area_struct *vma, "reqlen %lx > actual %lx\n", vma->vm_end - vma->vm_start, (unsigned long) total_size); - ret = -EFAULT; + ret = -EINVAL; goto bail; } @@ -1039,16 +1078,15 @@ static int mmap_rcvegrbufs(struct vm_area_struct *vma, ret = -EPERM; goto bail; } - - start = vma->vm_start; - phys = pd->port_rcvegrbuf_phys; - /* don't allow them to later change to writeable with mprotect */ vma->vm_flags &= ~VM_MAYWRITE; + start = vma->vm_start; + for (i = 0; i < pd->port_rcvegrbuf_chunks; i++, start += size) { - ret = remap_pfn_range(vma, start, phys[i] >> PAGE_SHIFT, - size, vma->vm_page_prot); + pfn = virt_to_phys(pd->port_rcvegrbuf[i]) >> PAGE_SHIFT; + ret = remap_pfn_range(vma, start, pfn, size, + vma->vm_page_prot); if (ret < 0) goto bail; } @@ -1058,74 +1096,118 @@ bail: return ret; } -static int mmap_rcvhdrq(struct vm_area_struct *vma, - struct ipath_portdata *pd) +/* + * ipath_file_vma_nopage - handle a VMA page fault. + */ +static struct page *ipath_file_vma_nopage(struct vm_area_struct *vma, + unsigned long address, int *type) { - struct ipath_devdata *dd = pd->port_dd; - size_t total_size; - int ret; + unsigned long offset = address - vma->vm_start; + struct page *page = NOPAGE_SIGBUS; + void *pageptr; /* - * kmalloc'ed memory, physically contiguous; this is from - * spi_rcvhdr_base; we allow user to map read-write so they can - * write hdrq entries to allow protocol code to directly poll - * whether a hdrq entry has been written. + * Convert the vmalloc address into a struct page. */ - total_size = ALIGN(dd->ipath_rcvhdrcnt * dd->ipath_rcvhdrentsize * - sizeof(u32), PAGE_SIZE); - if ((vma->vm_end - vma->vm_start) > total_size) { - dev_info(&dd->pcidev->dev, - "FAIL on rcvhdrq: reqlen %lx > actual %lx\n", - vma->vm_end - vma->vm_start, - (unsigned long) total_size); - ret = -EFAULT; - goto bail; - } - - ret = remap_pfn_range(vma, vma->vm_start, - pd->port_rcvhdrq_phys >> PAGE_SHIFT, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); -bail: - return ret; + pageptr = (void *)(offset + (vma->vm_pgoff << PAGE_SHIFT)); + page = vmalloc_to_page(pageptr); + if (!page) + goto out; + + /* Increment the reference count. */ + get_page(page); + if (type) + *type = VM_FAULT_MINOR; +out: + return page; } -static int mmap_pioavailregs(struct vm_area_struct *vma, - struct ipath_portdata *pd) +static struct vm_operations_struct ipath_file_vm_ops = { + .nopage = ipath_file_vma_nopage, +}; + +static int mmap_kvaddr(struct vm_area_struct *vma, u64 pgaddr, + struct ipath_portdata *pd, unsigned subport) { - struct ipath_devdata *dd = pd->port_dd; + unsigned long len; + struct ipath_devdata *dd; + void *addr; + size_t size; int ret; + /* If the port is not shared, all addresses should be physical */ + if (!pd->port_subport_cnt) { + ret = -EINVAL; + goto bail; + } + + dd = pd->port_dd; + size = pd->port_rcvegrbuf_chunks * pd->port_rcvegrbuf_size; + /* - * when we map the PIO bufferavail registers, we want to map them as - * readonly, no write possible. - * - * kmalloc'ed memory, physically contiguous, one page only, readonly + * Master has all the slave uregbase, rcvhdrq, and + * rcvegrbufs mmapped. */ - - if ((vma->vm_end - vma->vm_start) > PAGE_SIZE) { - dev_info(&dd->pcidev->dev, "FAIL on pioavailregs_dma: " - "reqlen %lx > actual %lx\n", - vma->vm_end - vma->vm_start, - (unsigned long) PAGE_SIZE); - ret = -EFAULT; + if (subport == 0) { + unsigned num_slaves = pd->port_subport_cnt - 1; + + if (pgaddr == ((u64) pd->subport_uregbase & MMAP64_MASK)) { + addr = pd->subport_uregbase; + size = PAGE_SIZE * num_slaves; + } else if (pgaddr == ((u64) pd->subport_rcvhdr_base & + MMAP64_MASK)) { + addr = pd->subport_rcvhdr_base; + size = pd->port_rcvhdrq_size * num_slaves; + } else if (pgaddr == ((u64) pd->subport_rcvegrbuf & + MMAP64_MASK)) { + addr = pd->subport_rcvegrbuf; + size *= num_slaves; + } else { + ret = -EINVAL; + goto bail; + } + } else if (pgaddr == (((u64) pd->subport_uregbase + + PAGE_SIZE * (subport - 1)) & MMAP64_MASK)) { + addr = pd->subport_uregbase + PAGE_SIZE * (subport - 1); + size = PAGE_SIZE; + } else if (pgaddr == (((u64) pd->subport_rcvhdr_base + + pd->port_rcvhdrq_size * (subport - 1)) & + MMAP64_MASK)) { + addr = pd->subport_rcvhdr_base + + pd->port_rcvhdrq_size * (subport - 1); + size = pd->port_rcvhdrq_size; + } else if (pgaddr == (((u64) pd->subport_rcvegrbuf + + size * (subport - 1)) & MMAP64_MASK)) { + addr = pd->subport_rcvegrbuf + size * (subport - 1); + /* rcvegrbufs are read-only on the slave */ + if (vma->vm_flags & VM_WRITE) { + dev_info(&dd->pcidev->dev, + "Can't map eager buffers as " + "writable (flags=%lx)\n", vma->vm_flags); + ret = -EPERM; + goto bail; + } + /* + * Don't allow permission to later change to writeable + * with mprotect. + */ + vma->vm_flags &= ~VM_MAYWRITE; + } else { + ret = -EINVAL; goto bail; } - - if (vma->vm_flags & VM_WRITE) { - dev_info(&dd->pcidev->dev, - "Can't map pioavailregs as writable (flags=%lx)\n", - vma->vm_flags); - ret = -EPERM; + len = vma->vm_end - vma->vm_start; + if (len > size) { + ipath_cdbg(MM, "FAIL: reqlen %lx > %zx\n", len, size); + ret = -EINVAL; goto bail; } - /* don't allow them to later change with mprotect */ - vma->vm_flags &= ~VM_MAYWRITE; + vma->vm_pgoff = (unsigned long) addr >> PAGE_SHIFT; + vma->vm_ops = &ipath_file_vm_ops; + vma->vm_flags |= VM_RESERVED | VM_DONTEXPAND; + ret = 0; - ret = remap_pfn_range(vma, vma->vm_start, - dd->ipath_pioavailregs_phys >> PAGE_SHIFT, - PAGE_SIZE, vma->vm_page_prot); bail: return ret; } @@ -1145,41 +1227,99 @@ static int ipath_mmap(struct file *fp, struct vm_area_struct *vma) struct ipath_portdata *pd; struct ipath_devdata *dd; u64 pgaddr, ureg; + unsigned piobufs, piocnt; int ret; pd = port_fp(fp); + if (!pd) { + ret = -EINVAL; + goto bail; + } dd = pd->port_dd; + /* * This is the ipath_do_user_init() code, mapping the shared buffers * into the user process. The address referred to by vm_pgoff is the - * virtual, not physical, address; we only do one mmap for each - * space mapped. + * file offset passed via mmap(). For shared ports, this is the + * kernel vmalloc() address of the pages to share with the master. + * For non-shared or master ports, this is a physical address. + * We only do one mmap for each space mapped. */ pgaddr = vma->vm_pgoff << PAGE_SHIFT; /* - * note that ureg does *NOT* have the kregvirt as part of it, to be - * sure that for 32 bit programs, we don't end up trying to map a > - * 44 address. Has to match ipath_get_base_info() code that sets - * __spi_uregbase + * Check for 0 in case one of the allocations failed, but user + * called mmap anyway. */ + if (!pgaddr) { + ret = -EINVAL; + goto bail; + } - ureg = dd->ipath_uregbase + dd->ipath_palign * pd->port_port; - - ipath_cdbg(MM, "ushare: pgaddr %llx vm_start=%lx, vmlen %lx\n", + ipath_cdbg(MM, "pgaddr %llx vm_start=%lx len %lx port %u:%u:%u\n", (unsigned long long) pgaddr, vma->vm_start, - vma->vm_end - vma->vm_start); + vma->vm_end - vma->vm_start, dd->ipath_unit, + pd->port_port, subport_fp(fp)); + + /* + * Physical addresses must fit in 40 bits for our hardware. + * Check for kernel virtual addresses first, anything else must + * match a HW or memory address. + */ + if (pgaddr >= (1ULL<<40)) { + ret = mmap_kvaddr(vma, pgaddr, pd, subport_fp(fp)); + goto bail; + } + + if (!pd->port_subport_cnt) { + /* port is not shared */ + ureg = dd->ipath_uregbase + dd->ipath_palign * pd->port_port; + piocnt = dd->ipath_pbufsport; + piobufs = pd->port_piobufs; + } else if (!subport_fp(fp)) { + /* caller is the master */ + ureg = dd->ipath_uregbase + dd->ipath_palign * pd->port_port; + piocnt = (dd->ipath_pbufsport / pd->port_subport_cnt) + + (dd->ipath_pbufsport % pd->port_subport_cnt); + piobufs = pd->port_piobufs + + dd->ipath_palign * (dd->ipath_pbufsport - piocnt); + } else { + unsigned slave = subport_fp(fp) - 1; + + /* caller is a slave */ + ureg = 0; + piocnt = dd->ipath_pbufsport / pd->port_subport_cnt; + piobufs = pd->port_piobufs + dd->ipath_palign * piocnt * slave; + } if (pgaddr == ureg) ret = mmap_ureg(vma, dd, ureg); - else if (pgaddr == pd->port_piobufs) - ret = mmap_piobufs(vma, dd, pd); - else if (pgaddr == (u64) pd->port_rcvegr_phys) + else if (pgaddr == piobufs) + ret = mmap_piobufs(vma, dd, pd, piobufs, piocnt); + else if (pgaddr == dd->ipath_pioavailregs_phys) + /* in-memory copy of pioavail registers */ + ret = ipath_mmap_mem(vma, pd, PAGE_SIZE, 0, + (void *) dd->ipath_pioavailregs_dma, + "pioavail registers"); + else if (subport_fp(fp)) + /* Subports don't mmap the physical receive buffers */ + ret = -EINVAL; + else if (pgaddr == pd->port_rcvegr_phys) ret = mmap_rcvegrbufs(vma, pd); else if (pgaddr == (u64) pd->port_rcvhdrq_phys) - ret = mmap_rcvhdrq(vma, pd); - else if (pgaddr == dd->ipath_pioavailregs_phys) - ret = mmap_pioavailregs(vma, pd); + /* + * The rcvhdrq itself; readonly except on HT (so have + * to allow writable mapping), multiple pages, contiguous + * from an i/o perspective. + */ + ret = ipath_mmap_mem(vma, pd, pd->port_rcvhdrq_size, 1, + pd->port_rcvhdrq, + "rcvhdrq"); + else if (pgaddr == (u64) pd->port_rcvhdrqtailaddr_phys) + /* in-memory copy of rcvhdrq tail register */ + ret = ipath_mmap_mem(vma, pd, PAGE_SIZE, 0, + pd->port_rcvhdrtail_kvaddr, + "rcvhdrq tail"); else ret = -EINVAL; @@ -1187,9 +1327,10 @@ static int ipath_mmap(struct file *fp, struct vm_area_struct *vma) if (ret < 0) dev_info(&dd->pcidev->dev, - "Failure %d on addr %lx, off %lx\n", - -ret, vma->vm_start, vma->vm_pgoff); - + "Failure %d on off %llx len %lx\n", + -ret, (unsigned long long)pgaddr, + vma->vm_end - vma->vm_start); +bail: return ret; } @@ -1199,9 +1340,12 @@ static unsigned int ipath_poll(struct file *fp, struct ipath_portdata *pd; u32 head, tail; int bit; + unsigned pollflag = 0; struct ipath_devdata *dd; pd = port_fp(fp); + if (!pd) + goto bail; dd = pd->port_dd; bit = pd->port_port + INFINIPATH_R_INTRAVAIL_SHIFT; @@ -1224,7 +1368,7 @@ static unsigned int ipath_poll(struct file *fp, if (tail == head) { set_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag); - if(dd->ipath_rhdrhead_intr_off) /* arm rcv interrupt */ + if (dd->ipath_rhdrhead_intr_off) /* arm rcv interrupt */ (void)ipath_write_ureg(dd, ur_rcvhdrhead, dd->ipath_rhdrhead_intr_off | head, pd->port_port); @@ -1235,9 +1379,12 @@ static unsigned int ipath_poll(struct file *fp, clear_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag); pd->port_rcvwait_to++; } + else + pollflag = POLLIN | POLLRDNORM; } else { /* it's already happened; don't do wait_event overhead */ + pollflag = POLLIN | POLLRDNORM; pd->port_rcvnowait++; } @@ -1245,18 +1392,80 @@ static unsigned int ipath_poll(struct file *fp, ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, dd->ipath_rcvctrl); - return 0; +bail: + return pollflag; +} + +static int init_subports(struct ipath_devdata *dd, + struct ipath_portdata *pd, + const struct ipath_user_info *uinfo) +{ + int ret = 0; + unsigned num_slaves; + size_t size; + + /* Old user binaries don't know about subports */ + if ((uinfo->spu_userversion & 0xffff) != IPATH_USER_SWMINOR) + goto bail; + /* + * If the user is requesting zero or one port, + * skip the subport allocation. + */ + if (uinfo->spu_subport_cnt <= 1) + goto bail; + if (uinfo->spu_subport_cnt > 4) { + ret = -EINVAL; + goto bail; + } + + num_slaves = uinfo->spu_subport_cnt - 1; + pd->subport_uregbase = vmalloc(PAGE_SIZE * num_slaves); + if (!pd->subport_uregbase) { + ret = -ENOMEM; + goto bail; + } + /* Note: pd->port_rcvhdrq_size isn't initialized yet. */ + size = ALIGN(dd->ipath_rcvhdrcnt * dd->ipath_rcvhdrentsize * + sizeof(u32), PAGE_SIZE) * num_slaves; + pd->subport_rcvhdr_base = vmalloc(size); + if (!pd->subport_rcvhdr_base) { + ret = -ENOMEM; + goto bail_ureg; + } + + pd->subport_rcvegrbuf = vmalloc(pd->port_rcvegrbuf_chunks * + pd->port_rcvegrbuf_size * + num_slaves); + if (!pd->subport_rcvegrbuf) { + ret = -ENOMEM; + goto bail_rhdr; + } + + pd->port_subport_cnt = uinfo->spu_subport_cnt; + pd->port_subport_id = uinfo->spu_subport_id; + pd->active_slaves = 1; + goto bail; + +bail_rhdr: + vfree(pd->subport_rcvhdr_base); +bail_ureg: + vfree(pd->subport_uregbase); + pd->subport_uregbase = NULL; +bail: + return ret; } static int try_alloc_port(struct ipath_devdata *dd, int port, - struct file *fp) + struct file *fp, + const struct ipath_user_info *uinfo) { + struct ipath_portdata *pd; int ret; - if (!dd->ipath_pd[port]) { - void *p, *ptmp; + if (!(pd = dd->ipath_pd[port])) { + void *ptmp; - p = kzalloc(sizeof(struct ipath_portdata), GFP_KERNEL); + pd = kzalloc(sizeof(struct ipath_portdata), GFP_KERNEL); /* * Allocate memory for use in ipath_tid_update() just once @@ -1266,34 +1475,36 @@ static int try_alloc_port(struct ipath_devdata *dd, int port, ptmp = kmalloc(dd->ipath_rcvtidcnt * sizeof(u16) + dd->ipath_rcvtidcnt * sizeof(struct page **), GFP_KERNEL); - if (!p || !ptmp) { + if (!pd || !ptmp) { ipath_dev_err(dd, "Unable to allocate portdata " "memory, failing open\n"); ret = -ENOMEM; - kfree(p); + kfree(pd); kfree(ptmp); goto bail; } - dd->ipath_pd[port] = p; + dd->ipath_pd[port] = pd; dd->ipath_pd[port]->port_port = port; dd->ipath_pd[port]->port_dd = dd; dd->ipath_pd[port]->port_tid_pg_list = ptmp; init_waitqueue_head(&dd->ipath_pd[port]->port_wait); } - if (!dd->ipath_pd[port]->port_cnt) { - dd->ipath_pd[port]->port_cnt = 1; - fp->private_data = (void *) dd->ipath_pd[port]; + if (!pd->port_cnt) { + pd->userversion = uinfo->spu_userversion; + init_user_egr_sizes(pd); + if ((ret = init_subports(dd, pd, uinfo)) != 0) + goto bail; ipath_cdbg(PROC, "%s[%u] opened unit:port %u:%u\n", current->comm, current->pid, dd->ipath_unit, port); - dd->ipath_pd[port]->port_pid = current->pid; - strncpy(dd->ipath_pd[port]->port_comm, current->comm, - sizeof(dd->ipath_pd[port]->port_comm)); + pd->port_cnt = 1; + port_fp(fp) = pd; + pd->port_pid = current->pid; + strncpy(pd->port_comm, current->comm, sizeof(pd->port_comm)); ipath_stats.sps_ports++; ret = 0; - goto bail; - } - ret = -EBUSY; + } else + ret = -EBUSY; bail: return ret; @@ -1309,7 +1520,8 @@ static inline int usable(struct ipath_devdata *dd) | IPATH_LINKUNK)); } -static int find_free_port(int unit, struct file *fp) +static int find_free_port(int unit, struct file *fp, + const struct ipath_user_info *uinfo) { struct ipath_devdata *dd = ipath_lookup(unit); int ret, i; @@ -1324,8 +1536,8 @@ static int find_free_port(int unit, struct file *fp) goto bail; } - for (i = 0; i < dd->ipath_cfgports; i++) { - ret = try_alloc_port(dd, i, fp); + for (i = 1; i < dd->ipath_cfgports; i++) { + ret = try_alloc_port(dd, i, fp, uinfo); if (ret != -EBUSY) goto bail; } @@ -1335,26 +1547,27 @@ bail: return ret; } -static int find_best_unit(struct file *fp) +static int find_best_unit(struct file *fp, + const struct ipath_user_info *uinfo) { int ret = 0, i, prefunit = -1, devmax; int maxofallports, npresent, nup; int ndev; - (void) ipath_count_units(&npresent, &nup, &maxofallports); + devmax = ipath_count_units(&npresent, &nup, &maxofallports); /* * This code is present to allow a knowledgeable person to * specify the layout of processes to processors before opening * this driver, and then we'll assign the process to the "closest" - * HT-400 to that processor (we assume reasonable connectivity, + * InfiniPath chip to that processor (we assume reasonable connectivity, * for now). This code assumes that if affinity has been set * before this point, that at most one cpu is set; for now this * is reasonable. I check for both cpus_empty() and cpus_full(), * in case some kernel variant sets none of the bits when no * affinity is set. 2.6.11 and 12 kernels have all present * cpus set. Some day we'll have to fix it up further to handle - * a cpu subset. This algorithm fails for two HT-400's connected + * a cpu subset. This algorithm fails for two HT chips connected * in tunnel fashion. Eventually this needs real topology * information. There may be some issues with dual core numbering * as well. This needs more work prior to release. @@ -1388,8 +1601,6 @@ static int find_best_unit(struct file *fp) if (prefunit != -1) devmax = prefunit + 1; - else - devmax = ipath_count_units(NULL, NULL, NULL); recheck: for (i = 1; i < maxofallports; i++) { for (ndev = prefunit != -1 ? prefunit : 0; ndev < devmax; @@ -1404,7 +1615,7 @@ recheck: * next. */ continue; - ret = try_alloc_port(dd, i, fp); + ret = try_alloc_port(dd, i, fp, uinfo); if (!ret) goto done; } @@ -1440,22 +1651,183 @@ done: return ret; } +static int find_shared_port(struct file *fp, + const struct ipath_user_info *uinfo) +{ + int devmax, ndev, i; + int ret = 0; + + devmax = ipath_count_units(NULL, NULL, NULL); + + for (ndev = 0; ndev < devmax; ndev++) { + struct ipath_devdata *dd = ipath_lookup(ndev); + + if (!dd) + continue; + for (i = 1; i < dd->ipath_cfgports; i++) { + struct ipath_portdata *pd = dd->ipath_pd[i]; + + /* Skip ports which are not yet open */ + if (!pd || !pd->port_cnt) + continue; + /* Skip port if it doesn't match the requested one */ + if (pd->port_subport_id != uinfo->spu_subport_id) + continue; + /* Verify the sharing process matches the master */ + if (pd->port_subport_cnt != uinfo->spu_subport_cnt || + pd->userversion != uinfo->spu_userversion || + pd->port_cnt >= pd->port_subport_cnt) { + ret = -EINVAL; + goto done; + } + port_fp(fp) = pd; + subport_fp(fp) = pd->port_cnt++; + tidcursor_fp(fp) = 0; + pd->active_slaves |= 1 << subport_fp(fp); + ipath_cdbg(PROC, + "%s[%u] %u sharing %s[%u] unit:port %u:%u\n", + current->comm, current->pid, + subport_fp(fp), + pd->port_comm, pd->port_pid, + dd->ipath_unit, pd->port_port); + ret = 1; + goto done; + } + } + +done: + return ret; +} + static int ipath_open(struct inode *in, struct file *fp) { - int ret, minor; + /* The real work is performed later in ipath_assign_port() */ + fp->private_data = kzalloc(sizeof(struct ipath_filedata), GFP_KERNEL); + return fp->private_data ? 0 : -ENOMEM; +} + + +/* Get port early, so can set affinity prior to memory allocation */ +static int ipath_assign_port(struct file *fp, + const struct ipath_user_info *uinfo) +{ + int ret; + int i_minor; + unsigned swminor; + + /* Check to be sure we haven't already initialized this file */ + if (port_fp(fp)) { + ret = -EINVAL; + goto done; + } + + /* for now, if major version is different, bail */ + if ((uinfo->spu_userversion >> 16) != IPATH_USER_SWMAJOR) { + ipath_dbg("User major version %d not same as driver " + "major %d\n", uinfo->spu_userversion >> 16, + IPATH_USER_SWMAJOR); + ret = -ENODEV; + goto done; + } + + swminor = uinfo->spu_userversion & 0xffff; + if (swminor != IPATH_USER_SWMINOR) + ipath_dbg("User minor version %d not same as driver " + "minor %d\n", swminor, IPATH_USER_SWMINOR); mutex_lock(&ipath_mutex); - minor = iminor(in); + if (swminor == IPATH_USER_SWMINOR && uinfo->spu_subport_cnt && + (ret = find_shared_port(fp, uinfo))) { + mutex_unlock(&ipath_mutex); + if (ret > 0) + ret = 0; + goto done; + } + + i_minor = iminor(fp->f_dentry->d_inode) - IPATH_USER_MINOR_BASE; ipath_cdbg(VERBOSE, "open on dev %lx (minor %d)\n", - (long)in->i_rdev, minor); + (long)fp->f_dentry->d_inode->i_rdev, i_minor); - if (minor) - ret = find_free_port(minor - 1, fp); + if (i_minor) + ret = find_free_port(i_minor - 1, fp, uinfo); else - ret = find_best_unit(fp); + ret = find_best_unit(fp, uinfo); mutex_unlock(&ipath_mutex); + +done: + return ret; +} + + +static int ipath_do_user_init(struct file *fp, + const struct ipath_user_info *uinfo) +{ + int ret; + struct ipath_portdata *pd; + struct ipath_devdata *dd; + u32 head32; + + pd = port_fp(fp); + dd = pd->port_dd; + + if (uinfo->spu_rcvhdrsize) { + ret = ipath_setrcvhdrsize(dd, uinfo->spu_rcvhdrsize); + if (ret) + goto done; + } + + /* for now we do nothing with rcvhdrcnt: uinfo->spu_rcvhdrcnt */ + + /* for right now, kernel piobufs are at end, so port 1 is at 0 */ + pd->port_piobufs = dd->ipath_piobufbase + + dd->ipath_pbufsport * (pd->port_port - 1) * dd->ipath_palign; + ipath_cdbg(VERBOSE, "Set base of piobufs for port %u to 0x%x\n", + pd->port_port, pd->port_piobufs); + + /* + * Now allocate the rcvhdr Q and eager TIDs; skip the TID + * array for time being. If pd->port_port > chip-supported, + * we need to do extra stuff here to handle by handling overflow + * through port 0, someday + */ + ret = ipath_create_rcvhdrq(dd, pd); + if (!ret) + ret = ipath_create_user_egr(pd); + if (ret) + goto done; + + /* + * set the eager head register for this port to the current values + * of the tail pointers, since we don't know if they were + * updated on last use of the port. + */ + head32 = ipath_read_ureg32(dd, ur_rcvegrindextail, pd->port_port); + ipath_write_ureg(dd, ur_rcvegrindexhead, head32, pd->port_port); + dd->ipath_lastegrheads[pd->port_port] = -1; + dd->ipath_lastrcvhdrqtails[pd->port_port] = -1; + ipath_cdbg(VERBOSE, "Wrote port%d egrhead %x from tail regs\n", + pd->port_port, head32); + pd->port_tidcursor = 0; /* start at beginning after open */ + /* + * now enable the port; the tail registers will be written to memory + * by the chip as soon as it sees the write to + * dd->ipath_kregs->kr_rcvctrl. The update only happens on + * transition from 0 to 1, so clear it first, then set it as part of + * enabling the port. This will (very briefly) affect any other + * open ports, but it shouldn't be long enough to be an issue. + * We explictly set the in-memory copy to 0 beforehand, so we don't + * have to wait to be sure the DMA update has happened. + */ + *(volatile u64 *)pd->port_rcvhdrtail_kvaddr = 0ULL; + set_bit(INFINIPATH_R_PORTENABLE_SHIFT + pd->port_port, + &dd->ipath_rcvctrl); + ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, + dd->ipath_rcvctrl & ~INFINIPATH_R_TAILUPD); + ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, + dd->ipath_rcvctrl); +done: return ret; } @@ -1478,6 +1850,8 @@ static void unlock_expected_tids(struct ipath_portdata *pd) if (!dd->ipath_pageshadow[i]) continue; + pci_unmap_page(dd->pcidev, dd->ipath_physshadow[i], + PAGE_SIZE, PCI_DMA_FROMDEVICE); ipath_release_user_pages_on_close(&dd->ipath_pageshadow[i], 1); dd->ipath_pageshadow[i] = NULL; @@ -1498,6 +1872,7 @@ static void unlock_expected_tids(struct ipath_portdata *pd) static int ipath_close(struct inode *in, struct file *fp) { int ret = 0; + struct ipath_filedata *fd; struct ipath_portdata *pd; struct ipath_devdata *dd; unsigned port; @@ -1507,9 +1882,24 @@ static int ipath_close(struct inode *in, struct file *fp) mutex_lock(&ipath_mutex); - pd = port_fp(fp); - port = pd->port_port; + fd = (struct ipath_filedata *) fp->private_data; fp->private_data = NULL; + pd = fd->pd; + if (!pd) { + mutex_unlock(&ipath_mutex); + goto bail; + } + if (--pd->port_cnt) { + /* + * XXX If the master closes the port before the slave(s), + * revoke the mmap for the eager receive queue so + * the slave(s) don't wait for receive data forever. + */ + pd->active_slaves &= ~(1 << fd->subport); + mutex_unlock(&ipath_mutex); + goto bail; + } + port = pd->port_port; dd = pd->port_dd; if (pd->port_hdrqfull) { @@ -1536,70 +1926,79 @@ static int ipath_close(struct inode *in, struct file *fp) } if (dd->ipath_kregbase) { - if (pd->port_rcvhdrtail_uaddr) { - pd->port_rcvhdrtail_uaddr = 0; - pd->port_rcvhdrtail_kvaddr = NULL; - ipath_release_user_pages_on_close( - &pd->port_rcvhdrtail_pagep, 1); - pd->port_rcvhdrtail_pagep = NULL; - ipath_stats.sps_pageunlocks++; - } - ipath_write_kreg_port( - dd, dd->ipath_kregs->kr_rcvhdrtailaddr, - port, 0ULL); - ipath_write_kreg_port( - dd, dd->ipath_kregs->kr_rcvhdraddr, - pd->port_port, 0); + int i; + /* atomically clear receive enable port. */ + clear_bit(INFINIPATH_R_PORTENABLE_SHIFT + port, + &dd->ipath_rcvctrl); + ipath_write_kreg( dd, dd->ipath_kregs->kr_rcvctrl, + dd->ipath_rcvctrl); + /* and read back from chip to be sure that nothing + * else is in flight when we do the rest */ + (void)ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); /* clean up the pkeys for this port user */ ipath_clean_part_key(pd, dd); + /* + * be paranoid, and never write 0's to these, just use an + * unused part of the port 0 tail page. Of course, + * rcvhdraddr points to a large chunk of memory, so this + * could still trash things, but at least it won't trash + * page 0, and by disabling the port, it should stop "soon", + * even if a packet or two is in already in flight after we + * disabled the port. + */ + ipath_write_kreg_port(dd, + dd->ipath_kregs->kr_rcvhdrtailaddr, port, + dd->ipath_dummy_hdrq_phys); + ipath_write_kreg_port(dd, dd->ipath_kregs->kr_rcvhdraddr, + pd->port_port, dd->ipath_dummy_hdrq_phys); - if (port < dd->ipath_cfgports) { - int i = dd->ipath_pbufsport * (port - 1); - ipath_disarm_piobufs(dd, i, dd->ipath_pbufsport); + i = dd->ipath_pbufsport * (port - 1); + ipath_disarm_piobufs(dd, i, dd->ipath_pbufsport); - /* atomically clear receive enable port. */ - clear_bit(INFINIPATH_R_PORTENABLE_SHIFT + port, - &dd->ipath_rcvctrl); - ipath_write_kreg( - dd, - dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl); - - if (dd->ipath_pageshadow) - unlock_expected_tids(pd); - ipath_stats.sps_ports--; - ipath_cdbg(PROC, "%s[%u] closed port %u:%u\n", - pd->port_comm, pd->port_pid, - dd->ipath_unit, port); - } + dd->ipath_f_clear_tids(dd, pd->port_port); + + if (dd->ipath_pageshadow) + unlock_expected_tids(pd); + ipath_stats.sps_ports--; + ipath_cdbg(PROC, "%s[%u] closed port %u:%u\n", + pd->port_comm, pd->port_pid, + dd->ipath_unit, port); } - pd->port_cnt = 0; pd->port_pid = 0; - - dd->ipath_f_clear_tids(dd, pd->port_port); - - ipath_free_pddata(dd, pd->port_port, 0); - + dd->ipath_pd[pd->port_port] = NULL; /* before releasing mutex */ mutex_unlock(&ipath_mutex); + ipath_free_pddata(dd, pd); /* after releasing the mutex */ +bail: + kfree(fd); return ret; } -static int ipath_port_info(struct ipath_portdata *pd, +static int ipath_port_info(struct ipath_portdata *pd, u16 subport, struct ipath_port_info __user *uinfo) { struct ipath_port_info info; int nup; int ret; + size_t sz; (void) ipath_count_units(NULL, &nup, NULL); info.num_active = nup; info.unit = pd->port_dd->ipath_unit; info.port = pd->port_port; + info.subport = subport; + /* Don't return new fields if old library opened the port. */ + if ((pd->userversion & 0xffff) == IPATH_USER_SWMINOR) { + /* Number of user ports available for this device. */ + info.num_ports = pd->port_dd->ipath_cfgports - 1; + info.num_subports = pd->port_subport_cnt; + sz = sizeof(info); + } else + sz = sizeof(info) - 2 * sizeof(u16); - if (copy_to_user(uinfo, &info, sizeof(info))) { + if (copy_to_user(uinfo, &info, sz)) { ret = -EFAULT; goto bail; } @@ -1609,6 +2008,16 @@ bail: return ret; } +static int ipath_get_slave_info(struct ipath_portdata *pd, + void __user *slave_mask_addr) +{ + int ret = 0; + + if (copy_to_user(slave_mask_addr, &pd->active_slaves, sizeof(u32))) + ret = -EFAULT; + return ret; +} + static ssize_t ipath_write(struct file *fp, const char __user *data, size_t count, loff_t *off) { @@ -1635,6 +2044,8 @@ static ssize_t ipath_write(struct file *fp, const char __user *data, consumed = sizeof(cmd.type); switch (cmd.type) { + case IPATH_CMD_ASSIGN_PORT: + case __IPATH_CMD_USER_INIT: case IPATH_CMD_USER_INIT: copy = sizeof(cmd.cmd.user_info); dest = &cmd.cmd.user_info; @@ -1661,6 +2072,11 @@ static ssize_t ipath_write(struct file *fp, const char __user *data, dest = &cmd.cmd.part_key; src = &ucmd->cmd.part_key; break; + case IPATH_CMD_SLAVE_INFO: + copy = sizeof(cmd.cmd.slave_mask_addr); + dest = &cmd.cmd.slave_mask_addr; + src = &ucmd->cmd.slave_mask_addr; + break; default: ret = -EINVAL; goto bail; @@ -1678,34 +2094,55 @@ static ssize_t ipath_write(struct file *fp, const char __user *data, consumed += copy; pd = port_fp(fp); + if (!pd && cmd.type != __IPATH_CMD_USER_INIT && + cmd.type != IPATH_CMD_ASSIGN_PORT) { + ret = -EINVAL; + goto bail; + } switch (cmd.type) { + case IPATH_CMD_ASSIGN_PORT: + ret = ipath_assign_port(fp, &cmd.cmd.user_info); + if (ret) + goto bail; + break; + case __IPATH_CMD_USER_INIT: + /* backwards compatibility, get port first */ + ret = ipath_assign_port(fp, &cmd.cmd.user_info); + if (ret) + goto bail; + /* and fall through to current version. */ case IPATH_CMD_USER_INIT: - ret = ipath_do_user_init(pd, &cmd.cmd.user_info); - if (ret < 0) + ret = ipath_do_user_init(fp, &cmd.cmd.user_info); + if (ret) goto bail; ret = ipath_get_base_info( - pd, (void __user *) (unsigned long) + fp, (void __user *) (unsigned long) cmd.cmd.user_info.spu_base_info, cmd.cmd.user_info.spu_base_info_size); break; case IPATH_CMD_RECV_CTRL: - ret = ipath_manage_rcvq(pd, cmd.cmd.recv_ctrl); + ret = ipath_manage_rcvq(pd, subport_fp(fp), cmd.cmd.recv_ctrl); break; case IPATH_CMD_PORT_INFO: - ret = ipath_port_info(pd, + ret = ipath_port_info(pd, subport_fp(fp), (struct ipath_port_info __user *) (unsigned long) cmd.cmd.port_info); break; case IPATH_CMD_TID_UPDATE: - ret = ipath_tid_update(pd, &cmd.cmd.tid_info); + ret = ipath_tid_update(pd, fp, &cmd.cmd.tid_info); break; case IPATH_CMD_TID_FREE: - ret = ipath_tid_free(pd, &cmd.cmd.tid_info); + ret = ipath_tid_free(pd, subport_fp(fp), &cmd.cmd.tid_info); break; case IPATH_CMD_SET_PART_KEY: ret = ipath_set_part_key(pd, cmd.cmd.part_key); break; + case IPATH_CMD_SLAVE_INFO: + ret = ipath_get_slave_info(pd, + (void __user *) (unsigned long) + cmd.cmd.slave_mask_addr); + break; } if (ret >= 0) @@ -1859,19 +2296,12 @@ int ipath_user_add(struct ipath_devdata *dd) "error %d\n", -ret); goto bail; } - ret = ipath_diag_init(); - if (ret < 0) { - ipath_dev_err(dd, "Unable to set up diag support: " - "error %d\n", -ret); - goto bail_sma; - } - ret = init_cdev(0, "ipath", &ipath_file_ops, &wildcard_cdev, &wildcard_class_dev); if (ret < 0) { ipath_dev_err(dd, "Could not create wildcard " "minor: error %d\n", -ret); - goto bail_diag; + goto bail_user; } atomic_set(&user_setup, 1); @@ -1880,31 +2310,28 @@ int ipath_user_add(struct ipath_devdata *dd) snprintf(name, sizeof(name), "ipath%d", dd->ipath_unit); ret = init_cdev(dd->ipath_unit + 1, name, &ipath_file_ops, - &dd->cdev, &dd->class_dev); + &dd->user_cdev, &dd->user_class_dev); if (ret < 0) ipath_dev_err(dd, "Could not create user minor %d, %s\n", dd->ipath_unit + 1, name); goto bail; -bail_diag: - ipath_diag_cleanup(); -bail_sma: +bail_user: user_cleanup(); bail: return ret; } -void ipath_user_del(struct ipath_devdata *dd) +void ipath_user_remove(struct ipath_devdata *dd) { - cleanup_cdev(&dd->cdev, &dd->class_dev); + cleanup_cdev(&dd->user_cdev, &dd->user_class_dev); if (atomic_dec_return(&user_count) == 0) { if (atomic_read(&user_setup) == 0) goto bail; cleanup_cdev(&wildcard_cdev, &wildcard_class_dev); - ipath_diag_cleanup(); user_cleanup(); atomic_set(&user_setup, 0); diff --git a/drivers/infiniband/hw/ipath/ipath_fs.c b/drivers/infiniband/hw/ipath/ipath_fs.c index 63de3046aff3..a507d0b5be6c 100644 --- a/drivers/infiniband/hw/ipath/ipath_fs.c +++ b/drivers/infiniband/hw/ipath/ipath_fs.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -31,7 +32,6 @@ */ #include <linux/version.h> -#include <linux/config.h> #include <linux/module.h> #include <linux/fs.h> #include <linux/mount.h> @@ -61,10 +61,9 @@ static int ipathfs_mknod(struct inode *dir, struct dentry *dentry, inode->i_mode = mode; inode->i_uid = 0; inode->i_gid = 0; - inode->i_blksize = PAGE_CACHE_SIZE; inode->i_blocks = 0; inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; - inode->u.generic_ip = data; + inode->i_private = data; if ((mode & S_IFMT) == S_IFDIR) { inode->i_op = &simple_dir_inode_operations; inode->i_nlink++; @@ -119,7 +118,7 @@ static ssize_t atomic_counters_read(struct file *file, char __user *buf, u16 i; struct ipath_devdata *dd; - dd = file->f_dentry->d_inode->u.generic_ip; + dd = file->f_dentry->d_inode->i_private; for (i = 0; i < NUM_COUNTERS; i++) counters[i] = ipath_snap_cntr(dd, i); @@ -139,7 +138,7 @@ static ssize_t atomic_node_info_read(struct file *file, char __user *buf, struct ipath_devdata *dd; u64 guid; - dd = file->f_dentry->d_inode->u.generic_ip; + dd = file->f_dentry->d_inode->i_private; guid = be64_to_cpu(dd->ipath_guid); @@ -178,7 +177,7 @@ static ssize_t atomic_port_info_read(struct file *file, char __user *buf, u32 tmp, tmp2; struct ipath_devdata *dd; - dd = file->f_dentry->d_inode->u.generic_ip; + dd = file->f_dentry->d_inode->i_private; /* so we only initialize non-zero fields. */ memset(portinfo, 0, sizeof portinfo); @@ -191,8 +190,8 @@ static ssize_t atomic_port_info_read(struct file *file, char __user *buf, portinfo[4] = (dd->ipath_lid << 16); /* - * Notimpl yet SMLID (should we store this in the driver, in case - * SMA dies?) CapabilityMask is 0, we don't support any of these + * Notimpl yet SMLID. + * CapabilityMask is 0, we don't support any of these * DiagCode is 0; we don't store any diag info for now Notimpl yet * M_KeyLeasePeriod (we don't support M_Key) */ @@ -325,7 +324,7 @@ static ssize_t flash_read(struct file *file, char __user *buf, goto bail; } - dd = file->f_dentry->d_inode->u.generic_ip; + dd = file->f_dentry->d_inode->i_private; if (ipath_eeprom_read(dd, pos, tmp, count)) { ipath_dev_err(dd, "failed to read from flash\n"); ret = -ENXIO; @@ -357,19 +356,16 @@ static ssize_t flash_write(struct file *file, const char __user *buf, pos = *ppos; - if ( pos < 0) { + if (pos != 0) { ret = -EINVAL; goto bail; } - if (pos >= sizeof(struct ipath_flash)) { - ret = 0; + if (count != sizeof(struct ipath_flash)) { + ret = -EINVAL; goto bail; } - if (count > sizeof(struct ipath_flash) - pos) - count = sizeof(struct ipath_flash) - pos; - tmp = kmalloc(count, GFP_KERNEL); if (!tmp) { ret = -ENOMEM; @@ -381,7 +377,7 @@ static ssize_t flash_write(struct file *file, const char __user *buf, goto bail_tmp; } - dd = file->f_dentry->d_inode->u.generic_ip; + dd = file->f_dentry->d_inode->i_private; if (ipath_eeprom_write(dd, pos, tmp, count)) { ret = -ENXIO; ipath_dev_err(dd, "failed to write to flash\n"); diff --git a/drivers/infiniband/hw/ipath/ipath_ht400.c b/drivers/infiniband/hw/ipath/ipath_iba6110.c index fac0a2b74de2..9e4e8d4c6e20 100644 --- a/drivers/infiniband/hw/ipath/ipath_ht400.c +++ b/drivers/infiniband/hw/ipath/ipath_iba6110.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -32,7 +33,7 @@ /* * This file contains all of the code that is specific to the InfiniPath - * HT-400 chip. + * HT chip. */ #include <linux/pci.h> @@ -42,7 +43,7 @@ #include "ipath_registers.h" /* - * This lists the InfiniPath HT400 registers, in the actual chip layout. + * This lists the InfiniPath registers, in the actual chip layout. * This structure should never be directly accessed. * * The names are in InterCap form because they're taken straight from @@ -251,8 +252,8 @@ static const struct ipath_cregs ipath_ht_cregs = { }; /* kr_intstatus, kr_intclear, kr_intmask bits */ -#define INFINIPATH_I_RCVURG_MASK 0x1FF -#define INFINIPATH_I_RCVAVAIL_MASK 0x1FF +#define INFINIPATH_I_RCVURG_MASK ((1U<<9)-1) +#define INFINIPATH_I_RCVAVAIL_MASK ((1U<<9)-1) /* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */ #define INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT 0 @@ -337,7 +338,7 @@ static void hwerr_crcbits(struct ipath_devdata *dd, ipath_err_t hwerrs, if (crcbits) { u16 ctrl0, ctrl1; snprintf(bitsmsg, sizeof bitsmsg, - "[HT%s lane %s CRC (%llx); ignore till reload]", + "[HT%s lane %s CRC (%llx); powercycle to completely clear]", !(crcbits & _IPATH_HTLINK1_CRCBITS) ? "0 (A)" : (!(crcbits & _IPATH_HTLINK0_CRCBITS) ? "1 (B)" : "0+1 (A+B)"), @@ -388,17 +389,28 @@ static void hwerr_crcbits(struct ipath_devdata *dd, ipath_err_t hwerrs, _IPATH_HTLINK1_CRCBITS))); } +/* 6110 specific hardware errors... */ +static const struct ipath_hwerror_msgs ipath_6110_hwerror_msgs[] = { + INFINIPATH_HWE_MSG(HTCBUSIREQPARITYERR, "HTC Ireq Parity"), + INFINIPATH_HWE_MSG(HTCBUSTREQPARITYERR, "HTC Treq Parity"), + INFINIPATH_HWE_MSG(HTCBUSTRESPPARITYERR, "HTC Tresp Parity"), + INFINIPATH_HWE_MSG(HTCMISCERR5, "HT core Misc5"), + INFINIPATH_HWE_MSG(HTCMISCERR6, "HT core Misc6"), + INFINIPATH_HWE_MSG(HTCMISCERR7, "HT core Misc7"), + INFINIPATH_HWE_MSG(RXDSYNCMEMPARITYERR, "Rx Dsync"), + INFINIPATH_HWE_MSG(SERDESPLLFAILED, "SerDes PLL"), +}; + /** - * ipath_ht_handle_hwerrors - display hardware errors + * ipath_ht_handle_hwerrors - display hardware errors. * @dd: the infinipath device * @msg: the output buffer * @msgl: the size of the output buffer * - * Use same msg buffer as regular errors to avoid - * excessive stack use. Most hardware errors are catastrophic, but for - * right now, we'll print them and continue. - * We reuse the same message buffer as ipath_handle_errors() to avoid - * excessive stack usage. + * Use same msg buffer as regular errors to avoid excessive stack + * use. Most hardware errors are catastrophic, but for right now, + * we'll print them and continue. We reuse the same message buffer as + * ipath_handle_errors() to avoid excessive stack usage. */ static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg, size_t msgl) @@ -439,19 +451,49 @@ static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg, * make sure we get this much out, unless told to be quiet, * or it's occurred within the last 5 seconds */ - if ((hwerrs & ~dd->ipath_lasthwerror) || + if ((hwerrs & ~(dd->ipath_lasthwerror | + ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | + INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) + << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT))) || (ipath_debug & __IPATH_VERBDBG)) dev_info(&dd->pcidev->dev, "Hardware error: hwerr=0x%llx " "(cleared)\n", (unsigned long long) hwerrs); dd->ipath_lasthwerror |= hwerrs; - if (hwerrs & ~infinipath_hwe_bitsextant) + if (hwerrs & ~dd->ipath_hwe_bitsextant) ipath_dev_err(dd, "hwerror interrupt with unknown errors " "%llx set\n", (unsigned long long) - (hwerrs & ~infinipath_hwe_bitsextant)); + (hwerrs & ~dd->ipath_hwe_bitsextant)); ctrl = ipath_read_kreg32(dd, dd->ipath_kregs->kr_control); if (ctrl & INFINIPATH_C_FREEZEMODE) { + /* + * parity errors in send memory are recoverable, + * just cancel the send (if indicated in * sendbuffererror), + * count the occurrence, unfreeze (if no other handled + * hardware error bits are set), and continue. They can + * occur if a processor speculative read is done to the PIO + * buffer while we are sending a packet, for example. + */ + if (hwerrs & ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | + INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) + << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)) { + ipath_stats.sps_txeparity++; + ipath_dbg("Recovering from TXE parity error (%llu), " + "hwerrstatus=%llx\n", + (unsigned long long) ipath_stats.sps_txeparity, + (unsigned long long) hwerrs); + ipath_disarm_senderrbufs(dd); + hwerrs &= ~((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | + INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) + << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT); + if (!hwerrs) { /* else leave in freeze mode */ + ipath_write_kreg(dd, + dd->ipath_kregs->kr_control, + dd->ipath_control); + return; + } + } if (hwerrs) { /* * if any set that we aren't ignoring; only @@ -460,8 +502,9 @@ static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg, * times. */ if (dd->ipath_flags & IPATH_INITTED) { - ipath_dev_err(dd, "Fatal Error (freeze " - "mode), no longer usable\n"); + ipath_dev_err(dd, "Fatal Hardware Error (freeze " + "mode), no longer usable, SN %.16s\n", + dd->ipath_serial); isfatal = 1; } *dd->ipath_statusp &= ~IPATH_STATUS_IB_READY; @@ -497,46 +540,18 @@ static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg, bits); strlcat(msg, bitsmsg, msgl); } - if (hwerrs & (INFINIPATH_HWE_RXEMEMPARITYERR_MASK - << INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT)) { - bits = (u32) ((hwerrs >> - INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) & - INFINIPATH_HWE_RXEMEMPARITYERR_MASK); - snprintf(bitsmsg, sizeof bitsmsg, "[RXE Parity Errs %x] ", - bits); - strlcat(msg, bitsmsg, msgl); - } - if (hwerrs & (INFINIPATH_HWE_TXEMEMPARITYERR_MASK - << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)) { - bits = (u32) ((hwerrs >> - INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) & - INFINIPATH_HWE_TXEMEMPARITYERR_MASK); - snprintf(bitsmsg, sizeof bitsmsg, "[TXE Parity Errs %x] ", - bits); - strlcat(msg, bitsmsg, msgl); - } - if (hwerrs & INFINIPATH_HWE_IBCBUSTOSPCPARITYERR) - strlcat(msg, "[IB2IPATH Parity]", msgl); - if (hwerrs & INFINIPATH_HWE_IBCBUSFRSPCPARITYERR) - strlcat(msg, "[IPATH2IB Parity]", msgl); - if (hwerrs & INFINIPATH_HWE_HTCBUSIREQPARITYERR) - strlcat(msg, "[HTC Ireq Parity]", msgl); - if (hwerrs & INFINIPATH_HWE_HTCBUSTREQPARITYERR) - strlcat(msg, "[HTC Treq Parity]", msgl); - if (hwerrs & INFINIPATH_HWE_HTCBUSTRESPPARITYERR) - strlcat(msg, "[HTC Tresp Parity]", msgl); + + ipath_format_hwerrors(hwerrs, + ipath_6110_hwerror_msgs, + sizeof(ipath_6110_hwerror_msgs) / + sizeof(ipath_6110_hwerror_msgs[0]), + msg, msgl); if (hwerrs & (_IPATH_HTLINK0_CRCBITS | _IPATH_HTLINK1_CRCBITS)) hwerr_crcbits(dd, hwerrs, msg, msgl); - if (hwerrs & INFINIPATH_HWE_HTCMISCERR5) - strlcat(msg, "[HT core Misc5]", msgl); - if (hwerrs & INFINIPATH_HWE_HTCMISCERR6) - strlcat(msg, "[HT core Misc6]", msgl); - if (hwerrs & INFINIPATH_HWE_HTCMISCERR7) - strlcat(msg, "[HT core Misc7]", msgl); if (hwerrs & INFINIPATH_HWE_MEMBISTFAILED) { - strlcat(msg, "[Memory BIST test failed, HT-400 unusable]", + strlcat(msg, "[Memory BIST test failed, InfiniPath hardware unusable]", msgl); /* ignore from now on, so disable until driver reloaded */ dd->ipath_hwerrmask &= ~INFINIPATH_HWE_MEMBISTFAILED; @@ -552,7 +567,7 @@ static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg, if (hwerrs & _IPATH_PLL_FAIL) { snprintf(bitsmsg, sizeof bitsmsg, - "[PLL failed (%llx), HT-400 unusable]", + "[PLL failed (%llx), InfiniPath hardware unusable]", (unsigned long long) (hwerrs & _IPATH_PLL_FAIL)); strlcat(msg, bitsmsg, msgl); /* ignore from now on, so disable until driver reloaded */ @@ -571,11 +586,6 @@ static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg, dd->ipath_hwerrmask); } - if (hwerrs & INFINIPATH_HWE_RXDSYNCMEMPARITYERR) - strlcat(msg, "[Rx Dsync]", msgl); - if (hwerrs & INFINIPATH_HWE_SERDESPLLFAILED) - strlcat(msg, "[SerDes PLL]", msgl); - ipath_dev_err(dd, "%s hardware error\n", msg); if (isfatal && !ipath_diag_inuse && dd->ipath_freezemsg) /* @@ -609,18 +619,18 @@ static int ipath_ht_boardname(struct ipath_devdata *dd, char *name, break; case 5: /* - * HT-460 original production board; two production levels, with + * original production board; two production levels, with * different serial number ranges. See ipath_ht_early_init() for * case where we enable IPATH_GPIO_INTR for later serial # range. */ - n = "InfiniPath_HT-460"; + n = "InfiniPath_QHT7040"; break; case 6: n = "OEM_Board_3"; break; case 7: - /* HT-460 small form factor production board */ - n = "InfiniPath_HT-465"; + /* small form factor production board */ + n = "InfiniPath_QHT7140"; break; case 8: n = "LS/X-1"; @@ -632,7 +642,7 @@ static int ipath_ht_boardname(struct ipath_devdata *dd, char *name, n = "OEM_Board_2"; break; case 11: - n = "InfiniPath_HT-470"; + n = "InfiniPath_HT-470"; /* obsoleted */ break; case 12: n = "OEM_Board_4"; @@ -640,7 +650,7 @@ static int ipath_ht_boardname(struct ipath_devdata *dd, char *name, default: /* don't know, just print the number */ ipath_dev_err(dd, "Don't yet know about board " "with ID %u\n", boardrev); - snprintf(name, namelen, "Unknown_InfiniPath_HT-4xx_%u", + snprintf(name, namelen, "Unknown_InfiniPath_QHT7xxx_%u", boardrev); break; } @@ -649,11 +659,10 @@ static int ipath_ht_boardname(struct ipath_devdata *dd, char *name, if (dd->ipath_majrev != 3 || (dd->ipath_minrev < 2 || dd->ipath_minrev > 3)) { /* - * This version of the driver only supports the HT-400 - * Rev 3.2 + * This version of the driver only supports Rev 3.2 and 3.3 */ ipath_dev_err(dd, - "Unsupported HT-400 revision %u.%u!\n", + "Unsupported InfiniPath hardware revision %u.%u!\n", dd->ipath_majrev, dd->ipath_minrev); ret = 1; goto bail; @@ -737,11 +746,10 @@ static void ipath_check_htlink(struct ipath_devdata *dd) static int ipath_setup_ht_reset(struct ipath_devdata *dd) { - ipath_dbg("No reset possible for HT-400\n"); + ipath_dbg("No reset possible for this InfiniPath hardware\n"); return 0; } -#define HT_CAPABILITY_ID 0x08 /* HT capabilities not defined in kernel */ #define HT_INTR_DISC_CONFIG 0x80 /* HT interrupt and discovery cap */ #define HT_INTR_REG_INDEX 2 /* intconfig requires indirect accesses */ @@ -924,7 +932,7 @@ static int set_int_handler(struct ipath_devdata *dd, struct pci_dev *pdev, /* * kernels with CONFIG_PCI_MSI set the vector in the irq field of - * struct pci_device, so we use that to program the HT-400 internal + * struct pci_device, so we use that to program the internal * interrupt register (not config space) with that value. The BIOS * must still have done the basic MSI setup. */ @@ -972,7 +980,7 @@ static int ipath_setup_ht_config(struct ipath_devdata *dd, * do this early, before we ever enable errors or hardware errors, * mostly to avoid causing the chip to enter freeze mode. */ - pos = pci_find_capability(pdev, HT_CAPABILITY_ID); + pos = pci_find_capability(pdev, PCI_CAP_ID_HT); if (!pos) { ipath_dev_err(dd, "Couldn't find HyperTransport " "capability; no interrupts\n"); @@ -995,7 +1003,7 @@ static int ipath_setup_ht_config(struct ipath_devdata *dd, else if (cap_type == HT_INTR_DISC_CONFIG) ihandler = set_int_handler(dd, pdev, pos); } while ((pos = pci_find_next_capability(pdev, pos, - HT_CAPABILITY_ID))); + PCI_CAP_ID_HT))); if (!ihandler) { ipath_dev_err(dd, "Couldn't find interrupt handler in " @@ -1012,7 +1020,7 @@ bail: * @dd: the infinipath device * * Called during driver unload. - * This is currently a nop for the HT-400, not for all chips + * This is currently a nop for the HT chip, not for all chips */ static void ipath_setup_ht_cleanup(struct ipath_devdata *dd) { @@ -1080,21 +1088,21 @@ static void ipath_setup_ht_setextled(struct ipath_devdata *dd, ipath_write_kreg(dd, dd->ipath_kregs->kr_extctrl, extctl); } -static void ipath_init_ht_variables(void) +static void ipath_init_ht_variables(struct ipath_devdata *dd) { - ipath_gpio_sda_num = _IPATH_GPIO_SDA_NUM; - ipath_gpio_scl_num = _IPATH_GPIO_SCL_NUM; - ipath_gpio_sda = IPATH_GPIO_SDA; - ipath_gpio_scl = IPATH_GPIO_SCL; + dd->ipath_gpio_sda_num = _IPATH_GPIO_SDA_NUM; + dd->ipath_gpio_scl_num = _IPATH_GPIO_SCL_NUM; + dd->ipath_gpio_sda = IPATH_GPIO_SDA; + dd->ipath_gpio_scl = IPATH_GPIO_SCL; - infinipath_i_bitsextant = + dd->ipath_i_bitsextant = (INFINIPATH_I_RCVURG_MASK << INFINIPATH_I_RCVURG_SHIFT) | (INFINIPATH_I_RCVAVAIL_MASK << INFINIPATH_I_RCVAVAIL_SHIFT) | INFINIPATH_I_ERROR | INFINIPATH_I_SPIOSENT | INFINIPATH_I_SPIOBUFAVAIL | INFINIPATH_I_GPIO; - infinipath_e_bitsextant = + dd->ipath_e_bitsextant = INFINIPATH_E_RFORMATERR | INFINIPATH_E_RVCRC | INFINIPATH_E_RICRC | INFINIPATH_E_RMINPKTLEN | INFINIPATH_E_RMAXPKTLEN | INFINIPATH_E_RLONGPKTLEN | @@ -1112,7 +1120,7 @@ static void ipath_init_ht_variables(void) INFINIPATH_E_INVALIDADDR | INFINIPATH_E_RESET | INFINIPATH_E_HARDWARE; - infinipath_hwe_bitsextant = + dd->ipath_hwe_bitsextant = (INFINIPATH_HWE_HTCMEMPARITYERR_MASK << INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT) | (INFINIPATH_HWE_TXEMEMPARITYERR_MASK << @@ -1141,8 +1149,8 @@ static void ipath_init_ht_variables(void) INFINIPATH_HWE_IBCBUSTOSPCPARITYERR | INFINIPATH_HWE_IBCBUSFRSPCPARITYERR; - infinipath_i_rcvavail_mask = INFINIPATH_I_RCVAVAIL_MASK; - infinipath_i_rcvurg_mask = INFINIPATH_I_RCVURG_MASK; + dd->ipath_i_rcvavail_mask = INFINIPATH_I_RCVAVAIL_MASK; + dd->ipath_i_rcvurg_mask = INFINIPATH_I_RCVURG_MASK; } /** @@ -1289,6 +1297,15 @@ static int ipath_ht_bringup_serdes(struct ipath_devdata *dd) val &= ~INFINIPATH_XGXS_RESET; change = 1; } + if (((val >> INFINIPATH_XGXS_RX_POL_SHIFT) & + INFINIPATH_XGXS_RX_POL_MASK) != dd->ipath_rx_pol_inv ) { + /* need to compensate for Tx inversion in partner */ + val &= ~(INFINIPATH_XGXS_RX_POL_MASK << + INFINIPATH_XGXS_RX_POL_SHIFT); + val |= dd->ipath_rx_pol_inv << + INFINIPATH_XGXS_RX_POL_SHIFT; + change = 1; + } if (change) ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val); @@ -1469,7 +1486,7 @@ static int ipath_ht_early_init(struct ipath_devdata *dd) dd->ipath_rcvhdrsize = IPATH_DFLT_RCVHDRSIZE; /* - * For HT-400, we allocate a somewhat overly large eager buffer, + * For HT, we allocate a somewhat overly large eager buffer, * such that we can guarantee that we can receive the largest * packet that we can send out. To truly support a 4KB MTU, * we need to bump this to a large value. To date, other than @@ -1530,7 +1547,7 @@ static int ipath_ht_early_init(struct ipath_devdata *dd) if(dd->ipath_boardrev == 5 && dd->ipath_serial[0] == '1' && dd->ipath_serial[1] == '2' && dd->ipath_serial[2] == '8') { /* - * Later production HT-460 has same changes as HT-465, so + * Later production QHT7040 has same changes as QHT7140, so * can use GPIO interrupts. They have serial #'s starting * with 128, rather than 112. */ @@ -1559,20 +1576,19 @@ static int ipath_ht_get_base_info(struct ipath_portdata *pd, void *kbase) } /** - * ipath_init_ht400_funcs - set up the chip-specific function pointers + * ipath_init_iba6110_funcs - set up the chip-specific function pointers * @dd: the infinipath device * * This is global, and is called directly at init to set up the * chip-specific function pointers for later use. */ -void ipath_init_ht400_funcs(struct ipath_devdata *dd) +void ipath_init_iba6110_funcs(struct ipath_devdata *dd) { dd->ipath_f_intrsetup = ipath_ht_intconfig; dd->ipath_f_bus = ipath_setup_ht_config; dd->ipath_f_reset = ipath_setup_ht_reset; dd->ipath_f_get_boardname = ipath_ht_boardname; dd->ipath_f_init_hwerrors = ipath_ht_init_hwerrors; - dd->ipath_f_init_hwerrors = ipath_ht_init_hwerrors; dd->ipath_f_early_init = ipath_ht_early_init; dd->ipath_f_handle_hwerrors = ipath_ht_handle_hwerrors; dd->ipath_f_quiet_serdes = ipath_ht_quiet_serdes; @@ -1599,5 +1615,5 @@ void ipath_init_ht400_funcs(struct ipath_devdata *dd) * do very early init that is needed before ipath_f_bus is * called */ - ipath_init_ht_variables(); + ipath_init_ht_variables(dd); } diff --git a/drivers/infiniband/hw/ipath/ipath_pe800.c b/drivers/infiniband/hw/ipath/ipath_iba6120.c index 02e8c75b24f6..a72ab9de386a 100644 --- a/drivers/infiniband/hw/ipath/ipath_pe800.c +++ b/drivers/infiniband/hw/ipath/ipath_iba6120.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -31,7 +32,7 @@ */ /* * This file contains all of the code that is specific to the - * InfiniPath PE-800 chip. + * InfiniPath PCIe chip. */ #include <linux/interrupt.h> @@ -44,9 +45,9 @@ /* * This file contains all the chip-specific register information and - * access functions for the PathScale PE800, the PCI-Express chip. + * access functions for the QLogic InfiniPath PCI-Express chip. * - * This lists the InfiniPath PE800 registers, in the actual chip layout. + * This lists the InfiniPath registers, in the actual chip layout. * This structure should never be directly accessed. */ struct _infinipath_do_not_use_kernel_regs { @@ -212,7 +213,6 @@ static const struct ipath_kregs ipath_pe_kregs = { .kr_rcvhdraddr = IPATH_KREG_OFFSET(RcvHdrAddr0), .kr_rcvhdrtailaddr = IPATH_KREG_OFFSET(RcvHdrTailAddr0), - /* This group is pe-800-specific; and used only in this file */ /* The rcvpktled register controls one of the debug port signals, so * a packet activity LED can be connected to it. */ .kr_rcvpktledcnt = IPATH_KREG_OFFSET(RcvPktLEDCnt), @@ -263,8 +263,8 @@ static const struct ipath_cregs ipath_pe_cregs = { }; /* kr_intstatus, kr_intclear, kr_intmask bits */ -#define INFINIPATH_I_RCVURG_MASK 0x1F -#define INFINIPATH_I_RCVAVAIL_MASK 0x1F +#define INFINIPATH_I_RCVURG_MASK ((1U<<5)-1) +#define INFINIPATH_I_RCVAVAIL_MASK ((1U<<5)-1) /* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */ #define INFINIPATH_HWE_PCIEMEMPARITYERR_MASK 0x000000000000003fULL @@ -294,6 +294,33 @@ static const struct ipath_cregs ipath_pe_cregs = { #define IPATH_GPIO_SCL (1ULL << \ (_IPATH_GPIO_SCL_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT)) +/* + * Rev2 silicon allows suppressing check for ArmLaunch errors. + * this can speed up short packet sends on systems that do + * not guaranteee write-order. + */ +#define INFINIPATH_XGXS_SUPPRESS_ARMLAUNCH_ERR (1ULL<<63) + +/* 6120 specific hardware errors... */ +static const struct ipath_hwerror_msgs ipath_6120_hwerror_msgs[] = { + INFINIPATH_HWE_MSG(PCIEPOISONEDTLP, "PCIe Poisoned TLP"), + INFINIPATH_HWE_MSG(PCIECPLTIMEOUT, "PCIe completion timeout"), + /* + * In practice, it's unlikely wthat we'll see PCIe PLL, or bus + * parity or memory parity error failures, because most likely we + * won't be able to talk to the core of the chip. Nonetheless, we + * might see them, if they are in parts of the PCIe core that aren't + * essential. + */ + INFINIPATH_HWE_MSG(PCIE1PLLFAILED, "PCIePLL1"), + INFINIPATH_HWE_MSG(PCIE0PLLFAILED, "PCIePLL0"), + INFINIPATH_HWE_MSG(PCIEBUSPARITYXTLH, "PCIe XTLH core parity"), + INFINIPATH_HWE_MSG(PCIEBUSPARITYXADM, "PCIe ADM TX core parity"), + INFINIPATH_HWE_MSG(PCIEBUSPARITYRADM, "PCIe ADM RX core parity"), + INFINIPATH_HWE_MSG(RXDSYNCMEMPARITYERR, "Rx Dsync"), + INFINIPATH_HWE_MSG(SERDESPLLFAILED, "SerDes PLL"), +}; + /** * ipath_pe_handle_hwerrors - display hardware errors. * @dd: the infinipath device @@ -343,19 +370,49 @@ static void ipath_pe_handle_hwerrors(struct ipath_devdata *dd, char *msg, * make sure we get this much out, unless told to be quiet, * or it's occurred within the last 5 seconds */ - if ((hwerrs & ~dd->ipath_lasthwerror) || + if ((hwerrs & ~(dd->ipath_lasthwerror | + ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | + INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) + << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT))) || (ipath_debug & __IPATH_VERBDBG)) dev_info(&dd->pcidev->dev, "Hardware error: hwerr=0x%llx " "(cleared)\n", (unsigned long long) hwerrs); dd->ipath_lasthwerror |= hwerrs; - if (hwerrs & ~infinipath_hwe_bitsextant) + if (hwerrs & ~dd->ipath_hwe_bitsextant) ipath_dev_err(dd, "hwerror interrupt with unknown errors " "%llx set\n", (unsigned long long) - (hwerrs & ~infinipath_hwe_bitsextant)); + (hwerrs & ~dd->ipath_hwe_bitsextant)); ctrl = ipath_read_kreg32(dd, dd->ipath_kregs->kr_control); if (ctrl & INFINIPATH_C_FREEZEMODE) { + /* + * parity errors in send memory are recoverable, + * just cancel the send (if indicated in * sendbuffererror), + * count the occurrence, unfreeze (if no other handled + * hardware error bits are set), and continue. They can + * occur if a processor speculative read is done to the PIO + * buffer while we are sending a packet, for example. + */ + if (hwerrs & ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | + INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) + << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)) { + ipath_stats.sps_txeparity++; + ipath_dbg("Recovering from TXE parity error (%llu), " + "hwerrstatus=%llx\n", + (unsigned long long) ipath_stats.sps_txeparity, + (unsigned long long) hwerrs); + ipath_disarm_senderrbufs(dd); + hwerrs &= ~((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | + INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) + << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT); + if (!hwerrs) { /* else leave in freeze mode */ + ipath_write_kreg(dd, + dd->ipath_kregs->kr_control, + dd->ipath_control); + return; + } + } if (hwerrs) { /* * if any set that we aren't ignoring only make the @@ -363,8 +420,9 @@ static void ipath_pe_handle_hwerrors(struct ipath_devdata *dd, char *msg, * and we get here multiple times */ if (dd->ipath_flags & IPATH_INITTED) { - ipath_dev_err(dd, "Fatal Error (freeze " - "mode), no longer usable\n"); + ipath_dev_err(dd, "Fatal Hardware Error (freeze " + "mode), no longer usable, SN %.16s\n", + dd->ipath_serial); isfatal = 1; } /* @@ -378,16 +436,15 @@ static void ipath_pe_handle_hwerrors(struct ipath_devdata *dd, char *msg, } else { ipath_dbg("Clearing freezemode on ignored hardware " "error\n"); - ctrl &= ~INFINIPATH_C_FREEZEMODE; ipath_write_kreg(dd, dd->ipath_kregs->kr_control, - ctrl); + dd->ipath_control); } } *msg = '\0'; if (hwerrs & INFINIPATH_HWE_MEMBISTFAILED) { - strlcat(msg, "[Memory BIST test failed, PE-800 unusable]", + strlcat(msg, "[Memory BIST test failed, InfiniPath hardware unusable]", msgl); /* ignore from now on, so disable until driver reloaded */ *dd->ipath_statusp |= IPATH_STATUS_HWERROR; @@ -395,24 +452,13 @@ static void ipath_pe_handle_hwerrors(struct ipath_devdata *dd, char *msg, ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask, dd->ipath_hwerrmask); } - if (hwerrs & (INFINIPATH_HWE_RXEMEMPARITYERR_MASK - << INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT)) { - bits = (u32) ((hwerrs >> - INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) & - INFINIPATH_HWE_RXEMEMPARITYERR_MASK); - snprintf(bitsmsg, sizeof bitsmsg, "[RXE Parity Errs %x] ", - bits); - strlcat(msg, bitsmsg, msgl); - } - if (hwerrs & (INFINIPATH_HWE_TXEMEMPARITYERR_MASK - << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)) { - bits = (u32) ((hwerrs >> - INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) & - INFINIPATH_HWE_TXEMEMPARITYERR_MASK); - snprintf(bitsmsg, sizeof bitsmsg, "[TXE Parity Errs %x] ", - bits); - strlcat(msg, bitsmsg, msgl); - } + + ipath_format_hwerrors(hwerrs, + ipath_6120_hwerror_msgs, + sizeof(ipath_6120_hwerror_msgs)/ + sizeof(ipath_6120_hwerror_msgs[0]), + msg, msgl); + if (hwerrs & (INFINIPATH_HWE_PCIEMEMPARITYERR_MASK << INFINIPATH_HWE_PCIEMEMPARITYERR_SHIFT)) { bits = (u32) ((hwerrs >> @@ -422,17 +468,13 @@ static void ipath_pe_handle_hwerrors(struct ipath_devdata *dd, char *msg, "[PCIe Mem Parity Errs %x] ", bits); strlcat(msg, bitsmsg, msgl); } - if (hwerrs & INFINIPATH_HWE_IBCBUSTOSPCPARITYERR) - strlcat(msg, "[IB2IPATH Parity]", msgl); - if (hwerrs & INFINIPATH_HWE_IBCBUSFRSPCPARITYERR) - strlcat(msg, "[IPATH2IB Parity]", msgl); #define _IPATH_PLL_FAIL (INFINIPATH_HWE_COREPLL_FBSLIP | \ INFINIPATH_HWE_COREPLL_RFSLIP ) if (hwerrs & _IPATH_PLL_FAIL) { snprintf(bitsmsg, sizeof bitsmsg, - "[PLL failed (%llx), PE-800 unusable]", + "[PLL failed (%llx), InfiniPath hardware unusable]", (unsigned long long) hwerrs & _IPATH_PLL_FAIL); strlcat(msg, bitsmsg, msgl); /* ignore from now on, so disable until driver reloaded */ @@ -451,34 +493,6 @@ static void ipath_pe_handle_hwerrors(struct ipath_devdata *dd, char *msg, dd->ipath_hwerrmask); } - if (hwerrs & INFINIPATH_HWE_PCIEPOISONEDTLP) - strlcat(msg, "[PCIe Poisoned TLP]", msgl); - if (hwerrs & INFINIPATH_HWE_PCIECPLTIMEOUT) - strlcat(msg, "[PCIe completion timeout]", msgl); - - /* - * In practice, it's unlikely wthat we'll see PCIe PLL, or bus - * parity or memory parity error failures, because most likely we - * won't be able to talk to the core of the chip. Nonetheless, we - * might see them, if they are in parts of the PCIe core that aren't - * essential. - */ - if (hwerrs & INFINIPATH_HWE_PCIE1PLLFAILED) - strlcat(msg, "[PCIePLL1]", msgl); - if (hwerrs & INFINIPATH_HWE_PCIE0PLLFAILED) - strlcat(msg, "[PCIePLL0]", msgl); - if (hwerrs & INFINIPATH_HWE_PCIEBUSPARITYXTLH) - strlcat(msg, "[PCIe XTLH core parity]", msgl); - if (hwerrs & INFINIPATH_HWE_PCIEBUSPARITYXADM) - strlcat(msg, "[PCIe ADM TX core parity]", msgl); - if (hwerrs & INFINIPATH_HWE_PCIEBUSPARITYRADM) - strlcat(msg, "[PCIe ADM RX core parity]", msgl); - - if (hwerrs & INFINIPATH_HWE_RXDSYNCMEMPARITYERR) - strlcat(msg, "[Rx Dsync]", msgl); - if (hwerrs & INFINIPATH_HWE_SERDESPLLFAILED) - strlcat(msg, "[SerDes PLL]", msgl); - ipath_dev_err(dd, "%s hardware error\n", msg); if (isfatal && !ipath_diag_inuse && dd->ipath_freezemsg) { /* @@ -510,30 +524,36 @@ static int ipath_pe_boardname(struct ipath_devdata *dd, char *name, n = "InfiniPath_Emulation"; break; case 1: - n = "InfiniPath_PE-800-Bringup"; + n = "InfiniPath_QLE7140-Bringup"; break; case 2: - n = "InfiniPath_PE-880"; + n = "InfiniPath_QLE7140"; break; case 3: - n = "InfiniPath_PE-850"; + n = "InfiniPath_QMI7140"; break; case 4: - n = "InfiniPath_PE-860"; + n = "InfiniPath_QEM7140"; + break; + case 5: + n = "InfiniPath_QMH7140"; + break; + case 6: + n = "InfiniPath_QLE7142"; break; default: ipath_dev_err(dd, "Don't yet know about board with ID %u\n", boardrev); - snprintf(name, namelen, "Unknown_InfiniPath_PE-8xx_%u", + snprintf(name, namelen, "Unknown_InfiniPath_PCIe_%u", boardrev); break; } if (n) snprintf(name, namelen, "%s", n); - if (dd->ipath_majrev != 4 || dd->ipath_minrev != 1) { - ipath_dev_err(dd, "Unsupported PE-800 revision %u.%u!\n", + if (dd->ipath_majrev != 4 || !dd->ipath_minrev || dd->ipath_minrev>2) { + ipath_dev_err(dd, "Unsupported InfiniPath hardware revision %u.%u!\n", dd->ipath_majrev, dd->ipath_minrev); ret = 1; } else @@ -567,9 +587,12 @@ static void ipath_pe_init_hwerrors(struct ipath_devdata *dd) if (!dd->ipath_boardrev) // no PLL for Emulator val &= ~INFINIPATH_HWE_SERDESPLLFAILED; - /* workaround bug 9460 in internal interface bus parity checking */ - val &= ~INFINIPATH_HWE_PCIEBUSPARITYRADM; - + if (dd->ipath_minrev < 2) { + /* workaround bug 9460 in internal interface bus parity + * checking. Fixed (HW bug 9490) in Rev2. + */ + val &= ~INFINIPATH_HWE_PCIEBUSPARITYRADM; + } dd->ipath_hwerrmask = val; } @@ -579,8 +602,8 @@ static void ipath_pe_init_hwerrors(struct ipath_devdata *dd) */ static int ipath_pe_bringup_serdes(struct ipath_devdata *dd) { - u64 val, tmp, config1; - int ret = 0, change = 0; + u64 val, tmp, config1, prev_val; + int ret = 0; ipath_dbg("Trying to bringup serdes\n"); @@ -637,6 +660,7 @@ static int ipath_pe_bringup_serdes(struct ipath_devdata *dd) val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig); + prev_val = val; if (((val >> INFINIPATH_XGXS_MDIOADDR_SHIFT) & INFINIPATH_XGXS_MDIOADDR_MASK) != 3) { val &= @@ -644,13 +668,30 @@ static int ipath_pe_bringup_serdes(struct ipath_devdata *dd) INFINIPATH_XGXS_MDIOADDR_SHIFT); /* MDIO address 3 */ val |= 3ULL << INFINIPATH_XGXS_MDIOADDR_SHIFT; - change = 1; } if (val & INFINIPATH_XGXS_RESET) { val &= ~INFINIPATH_XGXS_RESET; - change = 1; } - if (change) + if (((val >> INFINIPATH_XGXS_RX_POL_SHIFT) & + INFINIPATH_XGXS_RX_POL_MASK) != dd->ipath_rx_pol_inv ) { + /* need to compensate for Tx inversion in partner */ + val &= ~(INFINIPATH_XGXS_RX_POL_MASK << + INFINIPATH_XGXS_RX_POL_SHIFT); + val |= dd->ipath_rx_pol_inv << + INFINIPATH_XGXS_RX_POL_SHIFT; + } + if (dd->ipath_minrev >= 2) { + /* Rev 2. can tolerate multiple writes to PBC, and + * allowing them can provide lower latency on some + * CPUs, but this feature is off by default, only + * turned on by setting D63 of XGXSconfig reg. + * May want to make this conditional more + * fine-grained in future. This is not exactly + * related to XGXS, but where the bit ended up. + */ + val |= INFINIPATH_XGXS_SUPPRESS_ARMLAUNCH_ERR; + } + if (val != prev_val) ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val); val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig0); @@ -704,9 +745,25 @@ static void ipath_pe_quiet_serdes(struct ipath_devdata *dd) ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0, val); } -/* this is not yet needed on the PE800, so just return 0. */ static int ipath_pe_intconfig(struct ipath_devdata *dd) { + u64 val; + u32 chiprev; + + /* + * If the chip supports added error indication via GPIO pins, + * enable interrupts on those bits so the interrupt routine + * can count the events. Also set flag so interrupt routine + * can know they are expected. + */ + chiprev = dd->ipath_revision >> INFINIPATH_R_CHIPREVMINOR_SHIFT; + if ((chiprev & INFINIPATH_R_CHIPREVMINOR_MASK) > 1) { + /* Rev2+ reports extra errors via internal GPIO pins */ + dd->ipath_flags |= IPATH_GPIO_ERRINTRS; + val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_gpio_mask); + val |= IPATH_GPIO_ERRINTR_MASK; + ipath_write_kreg( dd, dd->ipath_kregs->kr_gpio_mask, val); + } return 0; } @@ -758,8 +815,8 @@ static void ipath_setup_pe_setextled(struct ipath_devdata *dd, u64 lst, * * This is called during driver unload. * We do the pci_disable_msi here, not in generic code, because it - * isn't used for the HT-400. If we do end up needing pci_enable_msi - * at some point in the future for HT-400, we'll move the call back + * isn't used for the HT chips. If we do end up needing pci_enable_msi + * at some point in the future for HT, we'll move the call back * into the main init_one code. */ static void ipath_setup_pe_cleanup(struct ipath_devdata *dd) @@ -779,10 +836,10 @@ static void ipath_setup_pe_cleanup(struct ipath_devdata *dd) * late in 2.6.16). * All that can be done is to edit the kernel source to remove the quirk * check until that is fixed. - * We do not need to call enable_msi() for our HyperTransport chip (HT-400), - * even those it uses MSI, and we want to avoid the quirk warning, so - * So we call enable_msi only for the PE-800. If we do end up needing - * pci_enable_msi at some point in the future for HT-400, we'll move the + * We do not need to call enable_msi() for our HyperTransport chip, + * even though it uses MSI, and we want to avoid the quirk warning, so + * So we call enable_msi only for PCIe. If we do end up needing + * pci_enable_msi at some point in the future for HT, we'll move the * call back into the main init_one code. * We save the msi lo and hi values, so we can restore them after * chip reset (the kernel PCI infrastructure doesn't yet handle that @@ -840,21 +897,23 @@ static int ipath_setup_pe_config(struct ipath_devdata *dd, return 0; } -static void ipath_init_pe_variables(void) +static void ipath_init_pe_variables(struct ipath_devdata *dd) { /* * bits for selecting i2c direction and values, * used for I2C serial flash */ - ipath_gpio_sda_num = _IPATH_GPIO_SDA_NUM; - ipath_gpio_scl_num = _IPATH_GPIO_SCL_NUM; - ipath_gpio_sda = IPATH_GPIO_SDA; - ipath_gpio_scl = IPATH_GPIO_SCL; + dd->ipath_gpio_sda_num = _IPATH_GPIO_SDA_NUM; + dd->ipath_gpio_scl_num = _IPATH_GPIO_SCL_NUM; + dd->ipath_gpio_sda = IPATH_GPIO_SDA; + dd->ipath_gpio_scl = IPATH_GPIO_SCL; /* variables for sanity checking interrupt and errors */ - infinipath_hwe_bitsextant = + dd->ipath_hwe_bitsextant = (INFINIPATH_HWE_RXEMEMPARITYERR_MASK << INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) | + (INFINIPATH_HWE_TXEMEMPARITYERR_MASK << + INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) | (INFINIPATH_HWE_PCIEMEMPARITYERR_MASK << INFINIPATH_HWE_PCIEMEMPARITYERR_SHIFT) | INFINIPATH_HWE_PCIE1PLLFAILED | @@ -870,13 +929,13 @@ static void ipath_init_pe_variables(void) INFINIPATH_HWE_SERDESPLLFAILED | INFINIPATH_HWE_IBCBUSTOSPCPARITYERR | INFINIPATH_HWE_IBCBUSFRSPCPARITYERR; - infinipath_i_bitsextant = + dd->ipath_i_bitsextant = (INFINIPATH_I_RCVURG_MASK << INFINIPATH_I_RCVURG_SHIFT) | (INFINIPATH_I_RCVAVAIL_MASK << INFINIPATH_I_RCVAVAIL_SHIFT) | INFINIPATH_I_ERROR | INFINIPATH_I_SPIOSENT | INFINIPATH_I_SPIOBUFAVAIL | INFINIPATH_I_GPIO; - infinipath_e_bitsextant = + dd->ipath_e_bitsextant = INFINIPATH_E_RFORMATERR | INFINIPATH_E_RVCRC | INFINIPATH_E_RICRC | INFINIPATH_E_RMINPKTLEN | INFINIPATH_E_RMAXPKTLEN | INFINIPATH_E_RLONGPKTLEN | @@ -894,8 +953,8 @@ static void ipath_init_pe_variables(void) INFINIPATH_E_INVALIDADDR | INFINIPATH_E_RESET | INFINIPATH_E_HARDWARE; - infinipath_i_rcvavail_mask = INFINIPATH_I_RCVAVAIL_MASK; - infinipath_i_rcvurg_mask = INFINIPATH_I_RCVURG_MASK; + dd->ipath_i_rcvavail_mask = INFINIPATH_I_RCVAVAIL_MASK; + dd->ipath_i_rcvurg_mask = INFINIPATH_I_RCVURG_MASK; } /* setup the MSI stuff again after a reset. I'd like to just call @@ -970,8 +1029,7 @@ static int ipath_setup_pe_reset(struct ipath_devdata *dd) int ret; /* Use ERROR so it shows up in logs, etc. */ - ipath_dev_err(dd, "Resetting PE-800 unit %u\n", - dd->ipath_unit); + ipath_dev_err(dd, "Resetting InfiniPath unit %u\n", dd->ipath_unit); /* keep chip from being accessed in a few places */ dd->ipath_flags &= ~(IPATH_INITTED|IPATH_PRESENT); val = dd->ipath_control | INFINIPATH_C_RESET; @@ -1070,6 +1128,45 @@ static void ipath_pe_put_tid(struct ipath_devdata *dd, u64 __iomem *tidptr, mmiowb(); spin_unlock_irqrestore(&dd->ipath_tid_lock, flags); } +/** + * ipath_pe_put_tid_2 - write a TID in chip, Revision 2 or higher + * @dd: the infinipath device + * @tidptr: pointer to the expected TID (in chip) to udpate + * @tidtype: 0 for eager, 1 for expected + * @pa: physical address of in memory buffer; ipath_tidinvalid if freeing + * + * This exists as a separate routine to allow for selection of the + * appropriate "flavor". The static calls in cleanup just use the + * revision-agnostic form, as they are not performance critical. + */ +static void ipath_pe_put_tid_2(struct ipath_devdata *dd, u64 __iomem *tidptr, + u32 type, unsigned long pa) +{ + u32 __iomem *tidp32 = (u32 __iomem *)tidptr; + + if (pa != dd->ipath_tidinvalid) { + if (pa & ((1U << 11) - 1)) { + dev_info(&dd->pcidev->dev, "BUG: physaddr %lx " + "not 2KB aligned!\n", pa); + return; + } + pa >>= 11; + /* paranoia check */ + if (pa & (7<<29)) + ipath_dev_err(dd, + "BUG: Physical page address 0x%lx " + "has bits set in 31-29\n", pa); + + if (type == 0) + pa |= dd->ipath_tidtemplate; + else /* for now, always full 4KB page */ + pa |= 2 << 29; + } + if (dd->ipath_kregbase) + writel(pa, tidp32); + mmiowb(); +} + /** * ipath_pe_clear_tid - clear all TID entries for a port, expected and eager @@ -1077,7 +1174,7 @@ static void ipath_pe_put_tid(struct ipath_devdata *dd, u64 __iomem *tidptr, * @port: the port * * clear all TID entries for a port, expected and eager. - * Used from ipath_close(). On PE800, TIDs are only 32 bits, + * Used from ipath_close(). On this chip, TIDs are only 32 bits, * not 64, but they are still on 64 bit boundaries, so tidbase * is declared as u64 * for the pointer math, even though we write 32 bits */ @@ -1147,9 +1244,9 @@ static int ipath_pe_early_init(struct ipath_devdata *dd) dd->ipath_flags |= IPATH_4BYTE_TID; /* - * For openib, we need to be able to handle an IB header of 96 bytes - * or 24 dwords. HT-400 has arbitrary sized receive buffers, so we - * made them the same size as the PIO buffers. The PE-800 does not + * For openfabrics, we need to be able to handle an IB header of + * 24 dwords. HT chip has arbitrary sized receive buffers, so we + * made them the same size as the PIO buffers. This chip does not * handle arbitrary size buffers, so we need the header large enough * to handle largest IB header, but still have room for a 2KB MTU * standard IB packet. @@ -1157,11 +1254,10 @@ static int ipath_pe_early_init(struct ipath_devdata *dd) dd->ipath_rcvhdrentsize = 24; dd->ipath_rcvhdrsize = IPATH_DFLT_RCVHDRSIZE; - /* For HT-400, we allocate a somewhat overly large eager buffer, - * such that we can guarantee that we can receive the largest packet - * that we can send out. To truly support a 4KB MTU, we need to - * bump this to a larger value. We'll do this when I get around to - * testing 4KB sends on the PE-800, which I have not yet done. + /* + * To truly support a 4KB MTU (for usermode), we need to + * bump this to a larger value. For now, we use them for + * the kernel only. */ dd->ipath_rcvegrbufsize = 2048; /* @@ -1174,9 +1270,9 @@ static int ipath_pe_early_init(struct ipath_devdata *dd) dd->ipath_init_ibmaxlen = dd->ipath_ibmaxlen; /* - * For PE-800, we can request a receive interrupt for 1 or + * We can request a receive interrupt for 1 or * more packets from current offset. For now, we set this - * up for a single packet, to match the HT-400 behavior. + * up for a single packet. */ dd->ipath_rhdrhead_intr_off = 1ULL<<32; @@ -1192,7 +1288,7 @@ int __attribute__((weak)) ipath_unordered_wc(void) /** * ipath_init_pe_get_base_info - set chip-specific flags for user code - * @dd: the infinipath device + * @pd: the infinipath port * @kbase: ipath_base_info pointer * * We set the PCIE flag because the lower bandwidth on PCIe vs @@ -1201,6 +1297,7 @@ int __attribute__((weak)) ipath_unordered_wc(void) static int ipath_pe_get_base_info(struct ipath_portdata *pd, void *kbase) { struct ipath_base_info *kinfo = kbase; + struct ipath_devdata *dd; if (ipath_unordered_wc()) { kinfo->spi_runtime_flags |= IPATH_RUNTIME_FORCE_WC_ORDER; @@ -1209,19 +1306,31 @@ static int ipath_pe_get_base_info(struct ipath_portdata *pd, void *kbase) else ipath_cdbg(PROC, "Not Intel processor, WC ordered\n"); - kinfo->spi_runtime_flags |= IPATH_RUNTIME_PCIE; + if (pd == NULL) + goto done; + dd = pd->port_dd; + + if (dd != NULL && dd->ipath_minrev >= 2) { + ipath_cdbg(PROC, "IBA6120 Rev2, allow multiple PBC write\n"); + kinfo->spi_runtime_flags |= IPATH_RUNTIME_PBC_REWRITE; + ipath_cdbg(PROC, "IBA6120 Rev2, allow loose DMA alignment\n"); + kinfo->spi_runtime_flags |= IPATH_RUNTIME_LOOSE_DMA_ALIGN; + } + +done: + kinfo->spi_runtime_flags |= IPATH_RUNTIME_PCIE; return 0; } /** - * ipath_init_pe800_funcs - set up the chip-specific function pointers + * ipath_init_iba6120_funcs - set up the chip-specific function pointers * @dd: the infinipath device * * This is global, and is called directly at init to set up the * chip-specific function pointers for later use. */ -void ipath_init_pe800_funcs(struct ipath_devdata *dd) +void ipath_init_iba6120_funcs(struct ipath_devdata *dd) { dd->ipath_f_intrsetup = ipath_pe_intconfig; dd->ipath_f_bus = ipath_setup_pe_config; @@ -1233,7 +1342,10 @@ void ipath_init_pe800_funcs(struct ipath_devdata *dd) dd->ipath_f_quiet_serdes = ipath_pe_quiet_serdes; dd->ipath_f_bringup_serdes = ipath_pe_bringup_serdes; dd->ipath_f_clear_tids = ipath_pe_clear_tids; - dd->ipath_f_put_tid = ipath_pe_put_tid; + if (dd->ipath_minrev >= 2) + dd->ipath_f_put_tid = ipath_pe_put_tid_2; + else + dd->ipath_f_put_tid = ipath_pe_put_tid; dd->ipath_f_cleanup = ipath_setup_pe_cleanup; dd->ipath_f_setextled = ipath_setup_pe_setextled; dd->ipath_f_get_base_info = ipath_pe_get_base_info; @@ -1248,6 +1360,6 @@ void ipath_init_pe800_funcs(struct ipath_devdata *dd) dd->ipath_kregs = &ipath_pe_kregs; dd->ipath_cregs = &ipath_pe_cregs; - ipath_init_pe_variables(); + ipath_init_pe_variables(dd); } diff --git a/drivers/infiniband/hw/ipath/ipath_init_chip.c b/drivers/infiniband/hw/ipath/ipath_init_chip.c index dc83250d26a6..d819cca524cd 100644 --- a/drivers/infiniband/hw/ipath/ipath_init_chip.c +++ b/drivers/infiniband/hw/ipath/ipath_init_chip.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -35,7 +36,7 @@ #include <linux/vmalloc.h> #include "ipath_kernel.h" -#include "ips_common.h" +#include "ipath_common.h" /* * min buffers we want to have per port, after driver @@ -52,8 +53,8 @@ module_param_named(cfgports, ipath_cfgports, ushort, S_IRUGO); MODULE_PARM_DESC(cfgports, "Set max number of ports to use"); /* - * Number of buffers reserved for driver (layered drivers and SMA - * send). Reserved at end of buffer list. Initialized based on + * Number of buffers reserved for driver (verbs and layered drivers.) + * Reserved at end of buffer list. Initialized based on * number of PIO buffers if not set via module interface. * The problem with this is that it's global, but we'll use different * numbers for different chip types. So the default value is not @@ -79,7 +80,7 @@ MODULE_PARM_DESC(kpiobufs, "Set number of PIO buffers for driver"); * * Allocate the eager TID buffers and program them into infinipath. * We use the network layer alloc_skb() allocator to allocate the - * memory, and either use the buffers as is for things like SMA + * memory, and either use the buffers as is for things like verbs * packets, or pass the buffers up to the ipath layered driver and * thence the network layer, replacing them as we do so (see * ipath_rcv_layer()). @@ -87,13 +88,13 @@ MODULE_PARM_DESC(kpiobufs, "Set number of PIO buffers for driver"); static int create_port0_egr(struct ipath_devdata *dd) { unsigned e, egrcnt; - struct sk_buff **skbs; + struct ipath_skbinfo *skbinfo; int ret; egrcnt = dd->ipath_rcvegrcnt; - skbs = vmalloc(sizeof(*dd->ipath_port0_skbs) * egrcnt); - if (skbs == NULL) { + skbinfo = vmalloc(sizeof(*dd->ipath_port0_skbinfo) * egrcnt); + if (skbinfo == NULL) { ipath_dev_err(dd, "allocation error for eager TID " "skb array\n"); ret = -ENOMEM; @@ -108,12 +109,13 @@ static int create_port0_egr(struct ipath_devdata *dd) * 4 bytes so that the data buffer stays word aligned. * See ipath_kreceive() for more details. */ - skbs[e] = ipath_alloc_skb(dd, GFP_KERNEL); - if (!skbs[e]) { + skbinfo[e].skb = ipath_alloc_skb(dd, GFP_KERNEL); + if (!skbinfo[e].skb) { ipath_dev_err(dd, "SKB allocation error for " "eager TID %u\n", e); while (e != 0) - dev_kfree_skb(skbs[--e]); + dev_kfree_skb(skbinfo[--e].skb); + vfree(skbinfo); ret = -ENOMEM; goto bail; } @@ -122,14 +124,17 @@ static int create_port0_egr(struct ipath_devdata *dd) * After loop above, so we can test non-NULL to see if ready * to use at receive, etc. */ - dd->ipath_port0_skbs = skbs; + dd->ipath_port0_skbinfo = skbinfo; for (e = 0; e < egrcnt; e++) { - unsigned long phys = - virt_to_phys(dd->ipath_port0_skbs[e]->data); + dd->ipath_port0_skbinfo[e].phys = + ipath_map_single(dd->pcidev, + dd->ipath_port0_skbinfo[e].skb->data, + dd->ipath_ibmaxlen, PCI_DMA_FROMDEVICE); dd->ipath_f_put_tid(dd, e + (u64 __iomem *) ((char __iomem *) dd->ipath_kregbase + - dd->ipath_rcvegrbase), 0, phys); + dd->ipath_rcvegrbase), 0, + dd->ipath_port0_skbinfo[e].phys); } ret = 0; @@ -238,7 +243,11 @@ static int init_chip_first(struct ipath_devdata *dd, "only supports %u\n", ipath_cfgports, dd->ipath_portcnt); } - dd->ipath_pd = kzalloc(sizeof(*dd->ipath_pd) * dd->ipath_cfgports, + /* + * Allocate full portcnt array, rather than just cfgports, because + * cleanup iterates across all possible ports. + */ + dd->ipath_pd = kzalloc(sizeof(*dd->ipath_pd) * dd->ipath_portcnt, GFP_KERNEL); if (!dd->ipath_pd) { @@ -275,7 +284,7 @@ static int init_chip_first(struct ipath_devdata *dd, pd->port_port = 0; pd->port_cnt = 1; /* The port 0 pkey table is used by the layer interface. */ - pd->port_pkeys[0] = IPS_DEFAULT_P_KEY; + pd->port_pkeys[0] = IPATH_DEFAULT_P_KEY; dd->ipath_rcvtidcnt = ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvtidcnt); dd->ipath_rcvtidbase = @@ -409,17 +418,8 @@ static int init_pioavailregs(struct ipath_devdata *dd) /* and its length */ dd->ipath_freezelen = L1_CACHE_BYTES - sizeof(dd->ipath_statusp[0]); - if (dd->ipath_unit * 64 > (IPATH_PORT0_RCVHDRTAIL_SIZE - 64)) { - ipath_dev_err(dd, "unit %u too large for port 0 " - "rcvhdrtail buffer size\n", dd->ipath_unit); - ret = -ENODEV; - } - else - ret = 0; + ret = 0; - /* so we can get current tail in ipath_kreceive(), per chip */ - dd->ipath_hdrqtailptr = &ipath_port0_rcvhdrtail[ - dd->ipath_unit * (64 / sizeof(*ipath_port0_rcvhdrtail))]; done: return ret; } @@ -435,16 +435,33 @@ done: */ static void init_shadow_tids(struct ipath_devdata *dd) { - dd->ipath_pageshadow = (struct page **) - vmalloc(dd->ipath_cfgports * dd->ipath_rcvtidcnt * + struct page **pages; + dma_addr_t *addrs; + + pages = vmalloc(dd->ipath_cfgports * dd->ipath_rcvtidcnt * sizeof(struct page *)); - if (!dd->ipath_pageshadow) + if (!pages) { ipath_dev_err(dd, "failed to allocate shadow page * " "array, no expected sends!\n"); - else - memset(dd->ipath_pageshadow, 0, - dd->ipath_cfgports * dd->ipath_rcvtidcnt * - sizeof(struct page *)); + dd->ipath_pageshadow = NULL; + return; + } + + addrs = vmalloc(dd->ipath_cfgports * dd->ipath_rcvtidcnt * + sizeof(dma_addr_t)); + if (!addrs) { + ipath_dev_err(dd, "failed to allocate shadow dma handle " + "array, no expected sends!\n"); + vfree(dd->ipath_pageshadow); + dd->ipath_pageshadow = NULL; + return; + } + + memset(pages, 0, dd->ipath_cfgports * dd->ipath_rcvtidcnt * + sizeof(struct page *)); + + dd->ipath_pageshadow = pages; + dd->ipath_physshadow = addrs; } static void enable_chip(struct ipath_devdata *dd, @@ -453,9 +470,9 @@ static void enable_chip(struct ipath_devdata *dd, u32 val; int i; - if (!reinit) { - init_waitqueue_head(&ipath_sma_state_wait); - } + if (!reinit) + init_waitqueue_head(&ipath_state_wait); + ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, dd->ipath_rcvctrl); @@ -652,8 +669,9 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit) { int ret = 0, i; u32 val32, kpiobufs; - u64 val, atmp; + u64 val; struct ipath_portdata *pd = NULL; /* keep gcc4 happy */ + gfp_t gfp_flags = GFP_USER | __GFP_COMP; ret = init_housekeeping(dd, &pd, reinit); if (ret) @@ -693,7 +711,7 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit) dd->ipath_pioavregs = ALIGN(val, sizeof(u64) * BITS_PER_BYTE / 2) / (sizeof(u64) * BITS_PER_BYTE / 2); if (ipath_kpiobufs == 0) { - /* not set by user, or set explictly to default */ + /* not set by user (this is default) */ if ((dd->ipath_piobcnt2k + dd->ipath_piobcnt4k) > 128) kpiobufs = 32; else @@ -775,24 +793,6 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit) goto done; } - val = ipath_port0_rcvhdrtail_dma + dd->ipath_unit * 64; - - /* verify that the alignment requirement was met */ - ipath_write_kreg_port(dd, dd->ipath_kregs->kr_rcvhdrtailaddr, - 0, val); - atmp = ipath_read_kreg64_port( - dd, dd->ipath_kregs->kr_rcvhdrtailaddr, 0); - if (val != atmp) { - ipath_dev_err(dd, "Catastrophic software error, " - "RcvHdrTailAddr0 written as %llx, " - "read back as %llx from %x\n", - (unsigned long long) val, - (unsigned long long) atmp, - dd->ipath_kregs->kr_rcvhdrtailaddr); - ret = -EINVAL; - goto done; - } - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvbthqp, IPATH_KD_QP); /* @@ -836,25 +836,45 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit) /* clear any interrups up to this point (ints still not enabled) */ ipath_write_kreg(dd, dd->ipath_kregs->kr_intclear, -1LL); - ipath_stats.sps_lid[dd->ipath_unit] = dd->ipath_lid; - /* * Set up the port 0 (kernel) rcvhdr q and egr TIDs. If doing * re-init, the simplest way to handle this is to free * existing, and re-allocate. */ - if (reinit) - ipath_free_pddata(dd, 0, 0); + if (reinit) { + struct ipath_portdata *pd = dd->ipath_pd[0]; + dd->ipath_pd[0] = NULL; + ipath_free_pddata(dd, pd); + } dd->ipath_f_tidtemplate(dd); ret = ipath_create_rcvhdrq(dd, pd); - if (!ret) + if (!ret) { + dd->ipath_hdrqtailptr = + (volatile __le64 *)pd->port_rcvhdrtail_kvaddr; ret = create_port0_egr(dd); + } if (ret) ipath_dev_err(dd, "failed to allocate port 0 (kernel) " "rcvhdrq and/or egr bufs\n"); else enable_chip(dd, pd, reinit); + + if (!ret && !reinit) { + /* used when we close a port, for DMA already in flight at close */ + dd->ipath_dummy_hdrq = dma_alloc_coherent( + &dd->pcidev->dev, pd->port_rcvhdrq_size, + &dd->ipath_dummy_hdrq_phys, + gfp_flags); + if (!dd->ipath_dummy_hdrq ) { + dev_info(&dd->pcidev->dev, + "Couldn't allocate 0x%lx bytes for dummy hdrq\n", + pd->port_rcvhdrq_size); + /* fallback to just 0'ing */ + dd->ipath_dummy_hdrq_phys = 0UL; + } + } + /* * cause retrigger of pending interrupts ignored during init, * even if we had errors @@ -950,6 +970,7 @@ static int ipath_set_kpiobufs(const char *str, struct kernel_param *kp) dd->ipath_piobcnt2k + dd->ipath_piobcnt4k - val; } + ipath_kpiobufs = val; ret = 0; bail: spin_unlock_irqrestore(&ipath_devs_lock, flags); diff --git a/drivers/infiniband/hw/ipath/ipath_intr.c b/drivers/infiniband/hw/ipath/ipath_intr.c index 3e72a1fe3d73..6bee53ce5f33 100644 --- a/drivers/infiniband/hw/ipath/ipath_intr.c +++ b/drivers/infiniband/hw/ipath/ipath_intr.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -33,31 +34,21 @@ #include <linux/pci.h> #include "ipath_kernel.h" -#include "ips_common.h" -#include "ipath_layer.h" +#include "ipath_verbs.h" +#include "ipath_common.h" -#define E_SUM_PKTERRS \ - (INFINIPATH_E_RHDRLEN | INFINIPATH_E_RBADTID | \ - INFINIPATH_E_RBADVERSION | INFINIPATH_E_RHDR | \ - INFINIPATH_E_RLONGPKTLEN | INFINIPATH_E_RSHORTPKTLEN | \ - INFINIPATH_E_RMAXPKTLEN | INFINIPATH_E_RMINPKTLEN | \ - INFINIPATH_E_RFORMATERR | INFINIPATH_E_RUNSUPVL | \ - INFINIPATH_E_RUNEXPCHAR | INFINIPATH_E_REBP) - -#define E_SUM_ERRS \ - (INFINIPATH_E_SPIOARMLAUNCH | INFINIPATH_E_SUNEXPERRPKTNUM | \ - INFINIPATH_E_SDROPPEDDATAPKT | INFINIPATH_E_SDROPPEDSMPPKT | \ - INFINIPATH_E_SMAXPKTLEN | INFINIPATH_E_SUNSUPVL | \ - INFINIPATH_E_SMINPKTLEN | INFINIPATH_E_SPKTLEN | \ - INFINIPATH_E_INVALIDADDR) - -static u64 handle_e_sum_errs(struct ipath_devdata *dd, ipath_err_t errs) +/* + * Called when we might have an error that is specific to a particular + * PIO buffer, and may need to cancel that buffer, so it can be re-used. + */ +void ipath_disarm_senderrbufs(struct ipath_devdata *dd) { - unsigned long sbuf[4]; - u64 ignore_this_time = 0; u32 piobcnt; - - /* if possible that sendbuffererror could be valid */ + unsigned long sbuf[4]; + /* + * it's possible that sendbuffererror could have bits set; might + * have already done this as a result of hardware error handling + */ piobcnt = dd->ipath_piobcnt2k + dd->ipath_piobcnt4k; /* read these before writing errorclear */ sbuf[0] = ipath_read_kreg64( @@ -73,36 +64,58 @@ static u64 handle_e_sum_errs(struct ipath_devdata *dd, ipath_err_t errs) if (sbuf[0] || sbuf[1] || (piobcnt > 128 && (sbuf[2] || sbuf[3]))) { int i; + if (ipath_debug & (__IPATH_PKTDBG|__IPATH_DBG)) { + __IPATH_DBG_WHICH(__IPATH_PKTDBG|__IPATH_DBG, + "SendbufErrs %lx %lx", sbuf[0], + sbuf[1]); + if (ipath_debug & __IPATH_PKTDBG && piobcnt > 128) + printk(" %lx %lx ", sbuf[2], sbuf[3]); + printk("\n"); + } - ipath_cdbg(PKT, "SendbufErrs %lx %lx ", sbuf[0], sbuf[1]); - if (ipath_debug & __IPATH_PKTDBG && piobcnt > 128) - printk("%lx %lx ", sbuf[2], sbuf[3]); - for (i = 0; i < piobcnt; i++) { - if (test_bit(i, sbuf)) { - u32 __iomem *piobuf; - if (i < dd->ipath_piobcnt2k) - piobuf = (u32 __iomem *) - (dd->ipath_pio2kbase + - i * dd->ipath_palign); - else - piobuf = (u32 __iomem *) - (dd->ipath_pio4kbase + - (i - dd->ipath_piobcnt2k) * - dd->ipath_4kalign); - - ipath_cdbg(PKT, - "PIObuf[%u] @%p pbc is %x; ", - i, piobuf, readl(piobuf)); - + for (i = 0; i < piobcnt; i++) + if (test_bit(i, sbuf)) ipath_disarm_piobufs(dd, i, 1); - } - } - if (ipath_debug & __IPATH_PKTDBG) - printk("\n"); + dd->ipath_lastcancel = jiffies+3; /* no armlaunch for a bit */ } - if ((errs & (INFINIPATH_E_SDROPPEDDATAPKT | - INFINIPATH_E_SDROPPEDSMPPKT | - INFINIPATH_E_SMINPKTLEN)) && +} + + +/* These are all rcv-related errors which we want to count for stats */ +#define E_SUM_PKTERRS \ + (INFINIPATH_E_RHDRLEN | INFINIPATH_E_RBADTID | \ + INFINIPATH_E_RBADVERSION | INFINIPATH_E_RHDR | \ + INFINIPATH_E_RLONGPKTLEN | INFINIPATH_E_RSHORTPKTLEN | \ + INFINIPATH_E_RMAXPKTLEN | INFINIPATH_E_RMINPKTLEN | \ + INFINIPATH_E_RFORMATERR | INFINIPATH_E_RUNSUPVL | \ + INFINIPATH_E_RUNEXPCHAR | INFINIPATH_E_REBP) + +/* These are all send-related errors which we want to count for stats */ +#define E_SUM_ERRS \ + (INFINIPATH_E_SPIOARMLAUNCH | INFINIPATH_E_SUNEXPERRPKTNUM | \ + INFINIPATH_E_SDROPPEDDATAPKT | INFINIPATH_E_SDROPPEDSMPPKT | \ + INFINIPATH_E_SMAXPKTLEN | INFINIPATH_E_SUNSUPVL | \ + INFINIPATH_E_SMINPKTLEN | INFINIPATH_E_SPKTLEN | \ + INFINIPATH_E_INVALIDADDR) + +/* + * these are errors that can occur when the link changes state while + * a packet is being sent or received. This doesn't cover things + * like EBP or VCRC that can be the result of a sending having the + * link change state, so we receive a "known bad" packet. + */ +#define E_SUM_LINK_PKTERRS \ + (INFINIPATH_E_SDROPPEDDATAPKT | INFINIPATH_E_SDROPPEDSMPPKT | \ + INFINIPATH_E_SMINPKTLEN | INFINIPATH_E_SPKTLEN | \ + INFINIPATH_E_RSHORTPKTLEN | INFINIPATH_E_RMINPKTLEN | \ + INFINIPATH_E_RUNEXPCHAR) + +static u64 handle_e_sum_errs(struct ipath_devdata *dd, ipath_err_t errs) +{ + u64 ignore_this_time = 0; + + ipath_disarm_senderrbufs(dd); + if ((errs & E_SUM_LINK_PKTERRS) && !(dd->ipath_flags & IPATH_LINKACTIVE)) { /* * This can happen when SMA is trying to bring the link @@ -111,16 +124,90 @@ static u64 handle_e_sum_errs(struct ipath_devdata *dd, ipath_err_t errs) * valid. We don't want to confuse people, so we just * don't print them, except at debug */ - ipath_dbg("Ignoring pktsend errors %llx, because not " - "yet active\n", (unsigned long long) errs); - ignore_this_time = INFINIPATH_E_SDROPPEDDATAPKT | - INFINIPATH_E_SDROPPEDSMPPKT | - INFINIPATH_E_SMINPKTLEN; + ipath_dbg("Ignoring packet errors %llx, because link not " + "ACTIVE\n", (unsigned long long) errs); + ignore_this_time = errs & E_SUM_LINK_PKTERRS; } return ignore_this_time; } +/* generic hw error messages... */ +#define INFINIPATH_HWE_TXEMEMPARITYERR_MSG(a) \ + { \ + .mask = ( INFINIPATH_HWE_TXEMEMPARITYERR_##a << \ + INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT ), \ + .msg = "TXE " #a " Memory Parity" \ + } +#define INFINIPATH_HWE_RXEMEMPARITYERR_MSG(a) \ + { \ + .mask = ( INFINIPATH_HWE_RXEMEMPARITYERR_##a << \ + INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT ), \ + .msg = "RXE " #a " Memory Parity" \ + } + +static const struct ipath_hwerror_msgs ipath_generic_hwerror_msgs[] = { + INFINIPATH_HWE_MSG(IBCBUSFRSPCPARITYERR, "IPATH2IB Parity"), + INFINIPATH_HWE_MSG(IBCBUSTOSPCPARITYERR, "IB2IPATH Parity"), + + INFINIPATH_HWE_TXEMEMPARITYERR_MSG(PIOBUF), + INFINIPATH_HWE_TXEMEMPARITYERR_MSG(PIOPBC), + INFINIPATH_HWE_TXEMEMPARITYERR_MSG(PIOLAUNCHFIFO), + + INFINIPATH_HWE_RXEMEMPARITYERR_MSG(RCVBUF), + INFINIPATH_HWE_RXEMEMPARITYERR_MSG(LOOKUPQ), + INFINIPATH_HWE_RXEMEMPARITYERR_MSG(EAGERTID), + INFINIPATH_HWE_RXEMEMPARITYERR_MSG(EXPTID), + INFINIPATH_HWE_RXEMEMPARITYERR_MSG(FLAGBUF), + INFINIPATH_HWE_RXEMEMPARITYERR_MSG(DATAINFO), + INFINIPATH_HWE_RXEMEMPARITYERR_MSG(HDRINFO), +}; + +/** + * ipath_format_hwmsg - format a single hwerror message + * @msg message buffer + * @msgl length of message buffer + * @hwmsg message to add to message buffer + */ +static void ipath_format_hwmsg(char *msg, size_t msgl, const char *hwmsg) +{ + strlcat(msg, "[", msgl); + strlcat(msg, hwmsg, msgl); + strlcat(msg, "]", msgl); +} + +/** + * ipath_format_hwerrors - format hardware error messages for display + * @hwerrs hardware errors bit vector + * @hwerrmsgs hardware error descriptions + * @nhwerrmsgs number of hwerrmsgs + * @msg message buffer + * @msgl message buffer length + */ +void ipath_format_hwerrors(u64 hwerrs, + const struct ipath_hwerror_msgs *hwerrmsgs, + size_t nhwerrmsgs, + char *msg, size_t msgl) +{ + int i; + const int glen = + sizeof(ipath_generic_hwerror_msgs) / + sizeof(ipath_generic_hwerror_msgs[0]); + + for (i=0; i<glen; i++) { + if (hwerrs & ipath_generic_hwerror_msgs[i].mask) { + ipath_format_hwmsg(msg, msgl, + ipath_generic_hwerror_msgs[i].msg); + } + } + + for (i=0; i<nhwerrmsgs; i++) { + if (hwerrs & hwerrmsgs[i].mask) { + ipath_format_hwmsg(msg, msgl, hwerrmsgs[i].msg); + } + } +} + /* return the strings for the most common link states */ static char *ib_linkstate(u32 linkstate) { @@ -156,7 +243,29 @@ static void handle_e_ibstatuschanged(struct ipath_devdata *dd, */ val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibcstatus); lstate = val & IPATH_IBSTATE_MASK; - if (lstate == IPATH_IBSTATE_INIT || lstate == IPATH_IBSTATE_ARM || + + /* + * this is confusing enough when it happens that I want to always put it + * on the console and in the logs. If it was a requested state change, + * we'll have already cleared the flags, so we won't print this warning + */ + if ((lstate != IPATH_IBSTATE_ARM && lstate != IPATH_IBSTATE_ACTIVE) + && (dd->ipath_flags & (IPATH_LINKARMED | IPATH_LINKACTIVE))) { + dev_info(&dd->pcidev->dev, "Link state changed from %s to %s\n", + (dd->ipath_flags & IPATH_LINKARMED) ? "ARM" : "ACTIVE", + ib_linkstate(lstate)); + /* + * Flush all queued sends when link went to DOWN or INIT, + * to be sure that they don't block SMA and other MAD packets + */ + ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, + INFINIPATH_S_ABORT); + ipath_disarm_piobufs(dd, dd->ipath_lastport_piobuf, + (unsigned)(dd->ipath_piobcnt2k + + dd->ipath_piobcnt4k) - + dd->ipath_lastport_piobuf); + } + else if (lstate == IPATH_IBSTATE_INIT || lstate == IPATH_IBSTATE_ARM || lstate == IPATH_IBSTATE_ACTIVE) { /* * only print at SMA if there is a change, debug if not @@ -168,7 +277,7 @@ static void handle_e_ibstatuschanged(struct ipath_devdata *dd, ib_linkstate(lstate)); } else - ipath_cdbg(SMA, "Unit %u link state %s, last " + ipath_cdbg(VERBOSE, "Unit %u link state %s, last " "was %s\n", dd->ipath_unit, ib_linkstate(lstate), ib_linkstate((unsigned) @@ -180,7 +289,7 @@ static void handle_e_ibstatuschanged(struct ipath_devdata *dd, if (lstate == IPATH_IBSTATE_INIT || lstate == IPATH_IBSTATE_ARM || lstate == IPATH_IBSTATE_ACTIVE) - ipath_cdbg(SMA, "Unit %u link state down" + ipath_cdbg(VERBOSE, "Unit %u link state down" " (state 0x%x), from %s\n", dd->ipath_unit, (u32)val & IPATH_IBSTATE_MASK, @@ -229,13 +338,14 @@ static void handle_e_ibstatuschanged(struct ipath_devdata *dd, | IPATH_LINKACTIVE | IPATH_LINKARMED); *dd->ipath_statusp &= ~IPATH_STATUS_IB_READY; + dd->ipath_lli_counter = 0; if (!noprint) { if (((dd->ipath_lastibcstat >> INFINIPATH_IBCS_LINKSTATE_SHIFT) & INFINIPATH_IBCS_LINKSTATE_MASK) == INFINIPATH_IBCS_L_STATE_ACTIVE) /* if from up to down be more vocal */ - ipath_cdbg(SMA, + ipath_cdbg(VERBOSE, "Unit %u link now down (%s)\n", dd->ipath_unit, ipath_ibcstatus_str[ltstate]); @@ -255,8 +365,6 @@ static void handle_e_ibstatuschanged(struct ipath_devdata *dd, *dd->ipath_statusp |= IPATH_STATUS_IB_READY | IPATH_STATUS_IB_CONF; dd->ipath_f_setextled(dd, lstate, ltstate); - - __ipath_layer_intr(dd, IPATH_LAYER_INT_IF_UP); } else if ((val & IPATH_IBSTATE_MASK) == IPATH_IBSTATE_INIT) { /* * set INIT and DOWN. Down is checked by most of the other @@ -350,7 +458,7 @@ static unsigned handle_frequent_errors(struct ipath_devdata *dd, return supp_msgs; } -static void handle_errors(struct ipath_devdata *dd, ipath_err_t errs) +static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs) { char msg[512]; u64 ignore_this_time = 0; @@ -372,13 +480,26 @@ static void handle_errors(struct ipath_devdata *dd, ipath_err_t errs) dd->ipath_f_handle_hwerrors(dd, msg, sizeof msg); } - if (!noprint && (errs & ~infinipath_e_bitsextant)) + if (!noprint && (errs & ~dd->ipath_e_bitsextant)) ipath_dev_err(dd, "error interrupt with unknown errors " "%llx set\n", (unsigned long long) - (errs & ~infinipath_e_bitsextant)); + (errs & ~dd->ipath_e_bitsextant)); if (errs & E_SUM_ERRS) ignore_this_time = handle_e_sum_errs(dd, errs); + else if ((errs & E_SUM_LINK_PKTERRS) && + !(dd->ipath_flags & IPATH_LINKACTIVE)) { + /* + * This can happen when SMA is trying to bring the link + * up, but the IB link changes state at the "wrong" time. + * The IB logic then complains that the packet isn't + * valid. We don't want to confuse people, so we just + * don't print them, except at debug + */ + ipath_dbg("Ignoring packet errors %llx, because link not " + "ACTIVE\n", (unsigned long long) errs); + ignore_this_time = errs & E_SUM_LINK_PKTERRS; + } if (supp_msgs == 250000) { /* @@ -397,7 +518,7 @@ static void handle_errors(struct ipath_devdata *dd, ipath_err_t errs) if ((dd->ipath_maskederrs & ~dd->ipath_ignorederrs) & ~(INFINIPATH_E_RRCVEGRFULL | INFINIPATH_E_RRCVHDRFULL)) ipath_dev_err(dd, "Disabling error(s) %llx because " - "occuring too frequently (%s)\n", + "occurring too frequently (%s)\n", (unsigned long long) (dd->ipath_maskederrs & ~dd->ipath_ignorederrs), msg); @@ -433,8 +554,16 @@ static void handle_errors(struct ipath_devdata *dd, ipath_err_t errs) ~(INFINIPATH_E_HARDWARE | INFINIPATH_E_IBSTATUSCHANGED); } + + /* likely due to cancel, so suppress */ + if ((errs & (INFINIPATH_E_SPKTLEN | INFINIPATH_E_SPIOARMLAUNCH)) && + dd->ipath_lastcancel > jiffies) { + ipath_dbg("Suppressed armlaunch/spktlen after error send cancel\n"); + errs &= ~(INFINIPATH_E_SPIOARMLAUNCH | INFINIPATH_E_SPKTLEN); + } + if (!errs) - return; + return 0; if (!noprint) /* @@ -484,7 +613,7 @@ static void handle_errors(struct ipath_devdata *dd, ipath_err_t errs) * don't report same point multiple times, * except kernel */ - tl = (u32) * pd->port_rcvhdrtail_kvaddr; + tl = *(u64 *) pd->port_rcvhdrtail_kvaddr; if (tl == dd->ipath_lastrcvhdrqtails[i]) continue; hd = ipath_read_ureg32(dd, ur_rcvhdrhead, @@ -493,10 +622,10 @@ static void handle_errors(struct ipath_devdata *dd, ipath_err_t errs) continue; if (hd == (tl + 1) || (!hd && tl == dd->ipath_hdrqlast)) { - dd->ipath_lastrcvhdrqtails[i] = tl; - pd->port_hdrqfull++; if (i == 0) chkerrpkts = 1; + dd->ipath_lastrcvhdrqtails[i] = tl; + pd->port_hdrqfull++; } } } @@ -551,16 +680,14 @@ static void handle_errors(struct ipath_devdata *dd, ipath_err_t errs) if (!noprint && *msg) ipath_dev_err(dd, "%s error\n", msg); - if (dd->ipath_sma_state_wanted & dd->ipath_flags) { - ipath_cdbg(VERBOSE, "sma wanted state %x, iflags now %x, " - "waking\n", dd->ipath_sma_state_wanted, + if (dd->ipath_state_wanted & dd->ipath_flags) { + ipath_cdbg(VERBOSE, "driver wanted state %x, iflags now %x, " + "waking\n", dd->ipath_state_wanted, dd->ipath_flags); - wake_up_interruptible(&ipath_sma_state_wait); + wake_up_interruptible(&ipath_state_wait); } - if (chkerrpkts) - /* process possible error packets in hdrq */ - ipath_kreceive(dd); + return chkerrpkts; } /* this is separate to allow for better optimization of ipath_intr() */ @@ -663,11 +790,7 @@ static void handle_layer_pioavail(struct ipath_devdata *dd) { int ret; - ret = __ipath_layer_intr(dd, IPATH_LAYER_INT_SEND_CONTINUE); - if (ret > 0) - goto set; - - ret = __ipath_verbs_piobufavail(dd); + ret = ipath_ib_piobufavail(dd->verbs_dev); if (ret > 0) goto set; @@ -678,32 +801,32 @@ set: dd->ipath_sendctrl); } -static void handle_rcv(struct ipath_devdata *dd, u32 istat) +/* + * Handle receive interrupts for user ports; this means a user + * process was waiting for a packet to arrive, and didn't want + * to poll + */ +static void handle_urcv(struct ipath_devdata *dd, u32 istat) { u64 portr; int i; int rcvdint = 0; portr = ((istat >> INFINIPATH_I_RCVAVAIL_SHIFT) & - infinipath_i_rcvavail_mask) + dd->ipath_i_rcvavail_mask) | ((istat >> INFINIPATH_I_RCVURG_SHIFT) & - infinipath_i_rcvurg_mask); - for (i = 0; i < dd->ipath_cfgports; i++) { + dd->ipath_i_rcvurg_mask); + for (i = 1; i < dd->ipath_cfgports; i++) { struct ipath_portdata *pd = dd->ipath_pd[i]; - if (portr & (1 << i) && pd && - pd->port_cnt) { - if (i == 0) - ipath_kreceive(dd); - else if (test_bit(IPATH_PORT_WAITING_RCV, - &pd->port_flag)) { - int rcbit; - clear_bit(IPATH_PORT_WAITING_RCV, - &pd->port_flag); - rcbit = i + INFINIPATH_R_INTRAVAIL_SHIFT; - clear_bit(1UL << rcbit, &dd->ipath_rcvctrl); - wake_up_interruptible(&pd->port_wait); - rcvdint = 1; - } + if (portr & (1 << i) && pd && pd->port_cnt && + test_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag)) { + int rcbit; + clear_bit(IPATH_PORT_WAITING_RCV, + &pd->port_flag); + rcbit = i + INFINIPATH_R_INTRAVAIL_SHIFT; + clear_bit(1UL << rcbit, &dd->ipath_rcvctrl); + wake_up_interruptible(&pd->port_wait); + rcvdint = 1; } } if (rcvdint) { @@ -719,16 +842,19 @@ static void handle_rcv(struct ipath_devdata *dd, u32 istat) irqreturn_t ipath_intr(int irq, void *data, struct pt_regs *regs) { struct ipath_devdata *dd = data; - u32 istat; + u32 istat, chk0rcv = 0; ipath_err_t estat = 0; - static unsigned unexpected = 0; irqreturn_t ret; + u32 oldhead, curtail; + static unsigned unexpected = 0; + static const u32 port0rbits = (1U<<INFINIPATH_I_RCVAVAIL_SHIFT) | + (1U<<INFINIPATH_I_RCVURG_SHIFT); + + ipath_stats.sps_ints++; - if(!(dd->ipath_flags & IPATH_PRESENT)) { - /* this is mostly so we don't try to touch the chip while - * it is being reset */ + if (!(dd->ipath_flags & IPATH_PRESENT)) { /* - * This return value is perhaps odd, but we do not want the + * This return value is not great, but we do not want the * interrupt core code to remove our interrupt handler * because we don't appear to be handling an interrupt * during a chip reset. @@ -736,7 +862,51 @@ irqreturn_t ipath_intr(int irq, void *data, struct pt_regs *regs) return IRQ_HANDLED; } + /* + * this needs to be flags&initted, not statusp, so we keep + * taking interrupts even after link goes down, etc. + * Also, we *must* clear the interrupt at some point, or we won't + * take it again, which can be real bad for errors, etc... + */ + + if (!(dd->ipath_flags & IPATH_INITTED)) { + ipath_bad_intr(dd, &unexpected); + ret = IRQ_NONE; + goto bail; + } + + /* + * We try to avoid reading the interrupt status register, since + * that's a PIO read, and stalls the processor for up to about + * ~0.25 usec. The idea is that if we processed a port0 packet, + * we blindly clear the port 0 receive interrupt bits, and nothing + * else, then return. If other interrupts are pending, the chip + * will re-interrupt us as soon as we write the intclear register. + * We then won't process any more kernel packets (if not the 2nd + * time, then the 3rd or 4th) and we'll then handle the other + * interrupts. We clear the interrupts first so that we don't + * lose intr for later packets that arrive while we are processing. + */ + oldhead = dd->ipath_port0head; + curtail = (u32)le64_to_cpu(*dd->ipath_hdrqtailptr); + if (oldhead != curtail) { + if (dd->ipath_flags & IPATH_GPIO_INTR) { + ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_clear, + (u64) (1 << IPATH_GPIO_PORT0_BIT)); + istat = port0rbits | INFINIPATH_I_GPIO; + } + else + istat = port0rbits; + ipath_write_kreg(dd, dd->ipath_kregs->kr_intclear, istat); + ipath_kreceive(dd); + if (oldhead != dd->ipath_port0head) { + ipath_stats.sps_fastrcvint++; + goto done; + } + } + istat = ipath_read_kreg32(dd, dd->ipath_kregs->kr_intstatus); + if (unlikely(!istat)) { ipath_stats.sps_nullintr++; ret = IRQ_NONE; /* not our interrupt, or already handled */ @@ -749,31 +919,17 @@ irqreturn_t ipath_intr(int irq, void *data, struct pt_regs *regs) goto bail; } - ipath_stats.sps_ints++; - - /* - * this needs to be flags&initted, not statusp, so we keep - * taking interrupts even after link goes down, etc. - * Also, we *must* clear the interrupt at some point, or we won't - * take it again, which can be real bad for errors, etc... - */ - - if (!(dd->ipath_flags & IPATH_INITTED)) { - ipath_bad_intr(dd, &unexpected); - ret = IRQ_NONE; - goto bail; - } if (unexpected) unexpected = 0; - ipath_cdbg(VERBOSE, "intr stat=0x%x\n", istat); - - if (istat & ~infinipath_i_bitsextant) + if (unlikely(istat & ~dd->ipath_i_bitsextant)) ipath_dev_err(dd, "interrupt with unknown interrupts %x set\n", - istat & (u32) ~ infinipath_i_bitsextant); + istat & (u32) ~ dd->ipath_i_bitsextant); + else + ipath_cdbg(VERBOSE, "intr stat=0x%x\n", istat); - if (istat & INFINIPATH_I_ERROR) { + if (unlikely(istat & INFINIPATH_I_ERROR)) { ipath_stats.sps_errints++; estat = ipath_read_kreg64(dd, dd->ipath_kregs->kr_errorstatus); @@ -788,43 +944,117 @@ irqreturn_t ipath_intr(int irq, void *data, struct pt_regs *regs) ipath_dev_err(dd, "Read of error status failed " "(all bits set); ignoring\n"); else - handle_errors(dd, estat); + if (handle_errors(dd, estat)) + /* force calling ipath_kreceive() */ + chk0rcv = 1; } if (istat & INFINIPATH_I_GPIO) { - if (unlikely(!(dd->ipath_flags & IPATH_GPIO_INTR))) { - u32 gpiostatus; - gpiostatus = ipath_read_kreg32( - dd, dd->ipath_kregs->kr_gpio_status); - ipath_dbg("Unexpected GPIO interrupt bits %x\n", - gpiostatus); - ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_clear, - gpiostatus); - } - else { - /* Clear GPIO status bit 2 */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_clear, - (u64) (1 << 2)); + /* + * GPIO interrupts fall in two broad classes: + * GPIO_2 indicates (on some HT4xx boards) that a packet + * has arrived for Port 0. Checking for this + * is controlled by flag IPATH_GPIO_INTR. + * GPIO_3..5 on IBA6120 Rev2 chips indicate errors + * that we need to count. Checking for this + * is controlled by flag IPATH_GPIO_ERRINTRS. + */ + u32 gpiostatus; + u32 to_clear = 0; + + gpiostatus = ipath_read_kreg32( + dd, dd->ipath_kregs->kr_gpio_status); + /* First the error-counter case. + */ + if ((gpiostatus & IPATH_GPIO_ERRINTR_MASK) && + (dd->ipath_flags & IPATH_GPIO_ERRINTRS)) { + /* want to clear the bits we see asserted. */ + to_clear |= (gpiostatus & IPATH_GPIO_ERRINTR_MASK); /* - * Packets are available in the port 0 rcv queue. - * Eventually this needs to be generalized to check - * IPATH_GPIO_INTR, and the specific GPIO bit, if - * GPIO interrupts are used for anything else. + * Count appropriately, clear bits out of our copy, + * as they have been "handled". */ - ipath_kreceive(dd); + if (gpiostatus & (1 << IPATH_GPIO_RXUVL_BIT)) { + ipath_dbg("FlowCtl on UnsupVL\n"); + dd->ipath_rxfc_unsupvl_errs++; + } + if (gpiostatus & (1 << IPATH_GPIO_OVRUN_BIT)) { + ipath_dbg("Overrun Threshold exceeded\n"); + dd->ipath_overrun_thresh_errs++; + } + if (gpiostatus & (1 << IPATH_GPIO_LLI_BIT)) { + ipath_dbg("Local Link Integrity error\n"); + dd->ipath_lli_errs++; + } + gpiostatus &= ~IPATH_GPIO_ERRINTR_MASK; + } + /* Now the Port0 Receive case */ + if ((gpiostatus & (1 << IPATH_GPIO_PORT0_BIT)) && + (dd->ipath_flags & IPATH_GPIO_INTR)) { + /* + * GPIO status bit 2 is set, and we expected it. + * clear it and indicate in p0bits. + * This probably only happens if a Port0 pkt + * arrives at _just_ the wrong time, and we + * handle that by seting chk0rcv; + */ + to_clear |= (1 << IPATH_GPIO_PORT0_BIT); + gpiostatus &= ~(1 << IPATH_GPIO_PORT0_BIT); + chk0rcv = 1; + } + if (unlikely(gpiostatus)) { + /* + * Some unexpected bits remain. If they could have + * caused the interrupt, complain and clear. + * MEA: this is almost certainly non-ideal. + * we should look into auto-disable of unexpected + * GPIO interrupts, possibly on a "three strikes" + * basis. + */ + u32 mask; + mask = ipath_read_kreg32( + dd, dd->ipath_kregs->kr_gpio_mask); + if (mask & gpiostatus) { + ipath_dbg("Unexpected GPIO IRQ bits %x\n", + gpiostatus & mask); + to_clear |= (gpiostatus & mask); + } + } + if (to_clear) { + ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_clear, + (u64) to_clear); } } + chk0rcv |= istat & port0rbits; /* - * clear the ones we will deal with on this round - * We clear it early, mostly for receive interrupts, so we - * know the chip will have seen this by the time we process - * the queue, and will re-interrupt if necessary. The processor - * itself won't take the interrupt again until we return. + * Clear the interrupt bits we found set, unless they are receive + * related, in which case we already cleared them above, and don't + * want to clear them again, because we might lose an interrupt. + * Clear it early, so we "know" know the chip will have seen this by + * the time we process the queue, and will re-interrupt if necessary. + * The processor itself won't take the interrupt again until we return. */ ipath_write_kreg(dd, dd->ipath_kregs->kr_intclear, istat); + /* + * handle port0 receive before checking for pio buffers available, + * since receives can overflow; piobuf waiters can afford a few + * extra cycles, since they were waiting anyway, and user's waiting + * for receive are at the bottom. + */ + if (chk0rcv) { + ipath_kreceive(dd); + istat &= ~port0rbits; + } + + if (istat & ((dd->ipath_i_rcvavail_mask << + INFINIPATH_I_RCVAVAIL_SHIFT) + | (dd->ipath_i_rcvurg_mask << + INFINIPATH_I_RCVURG_SHIFT))) + handle_urcv(dd, istat); + if (istat & INFINIPATH_I_SPIOBUFAVAIL) { clear_bit(IPATH_S_PIOINTBUFAVAIL, &dd->ipath_sendctrl); ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, @@ -836,17 +1066,7 @@ irqreturn_t ipath_intr(int irq, void *data, struct pt_regs *regs) handle_layer_pioavail(dd); } - /* - * we check for both transition from empty to non-empty, and urgent - * packets (those with the interrupt bit set in the header) - */ - - if (istat & ((infinipath_i_rcvavail_mask << - INFINIPATH_I_RCVAVAIL_SHIFT) - | (infinipath_i_rcvurg_mask << - INFINIPATH_I_RCVURG_SHIFT))) - handle_rcv(dd, istat); - +done: ret = IRQ_HANDLED; bail: diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h index 5d92d57b6f54..d7540b71b451 100644 --- a/drivers/infiniband/hw/ipath/ipath_kernel.h +++ b/drivers/infiniband/hw/ipath/ipath_kernel.h @@ -1,6 +1,7 @@ #ifndef _IPATH_KERNEL_H #define _IPATH_KERNEL_H /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -38,6 +39,8 @@ */ #include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/dma-mapping.h> #include <asm/io.h> #include "ipath_common.h" @@ -61,9 +64,7 @@ struct ipath_portdata { /* rcvhdrq base, needs mmap before useful */ void *port_rcvhdrq; /* kernel virtual address where hdrqtail is updated */ - u64 *port_rcvhdrtail_kvaddr; - /* page * used for uaddr */ - struct page *port_rcvhdrtail_pagep; + void *port_rcvhdrtail_kvaddr; /* * temp buffer for expected send setup, allocated at open, instead * of each setup call @@ -78,14 +79,10 @@ struct ipath_portdata { dma_addr_t port_rcvegr_phys; /* mmap of hdrq, must fit in 44 bits */ dma_addr_t port_rcvhdrq_phys; + dma_addr_t port_rcvhdrqtailaddr_phys; /* - * the actual user address that we ipath_mlock'ed, so we can - * ipath_munlock it at close - */ - unsigned long port_rcvhdrtail_uaddr; - /* - * number of opens on this instance (0 or 1; ignoring forks, dup, - * etc. for now) + * number of opens (including slave subports) on this instance + * (ignoring forks, dup, etc. for now) */ int port_cnt; /* @@ -94,6 +91,10 @@ struct ipath_portdata { */ /* instead of calculating it */ unsigned port_port; + /* non-zero if port is being shared. */ + u16 port_subport_cnt; + /* non-zero if port is being shared. */ + u16 port_subport_id; /* chip offset of PIO buffers for this port */ u32 port_piobufs; /* how many alloc_pages() chunks in port_rcvegrbuf_pages */ @@ -126,6 +127,16 @@ struct ipath_portdata { u16 port_pkeys[4]; /* so file ops can get at unit */ struct ipath_devdata *port_dd; + /* A page of memory for rcvhdrhead, rcvegrhead, rcvegrtail * N */ + void *subport_uregbase; + /* An array of pages for the eager receive buffers * N */ + void *subport_rcvegrbuf; + /* An array of pages for the eager header queue entries * N */ + void *subport_rcvhdr_base; + /* The version of the library which opened this port */ + u32 userversion; + /* Bitmask of active slaves */ + u32 active_slaves; }; struct sk_buff; @@ -137,10 +148,9 @@ struct _ipath_layer { void *l_arg; }; -/* Verbs layer interface */ -struct _verbs_layer { - void *l_arg; - struct timer_list l_timer; +struct ipath_skbinfo { + struct sk_buff *skb; + dma_addr_t phys; }; struct ipath_devdata { @@ -158,20 +168,14 @@ struct ipath_devdata { /* base of memory alloced for ipath_kregbase, for free */ u64 *ipath_kregalloc; /* - * version of kregbase that doesn't have high bits set (for 32 bit - * programs, so mmap64 44 bit works) - */ - u64 __iomem *ipath_kregvirt; - /* * virtual address where port0 rcvhdrqtail updated for this unit. * only written to by the chip, not the driver. */ volatile __le64 *ipath_hdrqtailptr; - dma_addr_t ipath_dma_addr; /* ipath_cfgports pointers */ struct ipath_portdata **ipath_pd; /* sk_buffs used by port 0 eager receive queue */ - struct sk_buff **ipath_port0_skbs; + struct ipath_skbinfo *ipath_port0_skbinfo; /* kvirt address of 1st 2k pio buffer */ void __iomem *ipath_pio2kbase; /* kvirt address of 1st 4k pio buffer */ @@ -209,7 +213,8 @@ struct ipath_devdata { void (*ipath_f_setextled)(struct ipath_devdata *, u64, u64); /* fill out chip-specific fields */ int (*ipath_f_get_base_info)(struct ipath_portdata *, void *); - struct _verbs_layer verbs_layer; + struct ipath_ibdev *verbs_dev; + struct timer_list verbs_timer; /* total dwords sent (summed from counter) */ u64 ipath_sword; /* total dwords rcvd (summed from counter) */ @@ -252,7 +257,7 @@ struct ipath_devdata { u64 ipath_tidtemplate; /* value to write to free TIDs */ u64 ipath_tidinvalid; - /* PE-800 rcv interrupt setup */ + /* IBA6120 rcv interrupt setup */ u64 ipath_rhdrhead_intr_off; /* size of memory at ipath_kregbase */ @@ -261,8 +266,8 @@ struct ipath_devdata { u32 ipath_pioavregs; /* IPATH_POLL, etc. */ u32 ipath_flags; - /* ipath_flags sma is waiting for */ - u32 ipath_sma_state_wanted; + /* ipath_flags driver is waiting for */ + u32 ipath_state_wanted; /* last buffer for user use, first buf for kernel use is this * index. */ u32 ipath_lastport_piobuf; @@ -322,10 +327,6 @@ struct ipath_devdata { u32 ipath_pcibar0; /* so we can rewrite it after a chip reset */ u32 ipath_pcibar1; - /* sequential tries for SMA send and no bufs */ - u32 ipath_nosma_bufs; - /* duration (seconds) ipath_nosma_bufs set */ - u32 ipath_nosma_secs; /* HT/PCI Vendor ID (here for NodeInfo) */ u16 ipath_vendorid; @@ -335,12 +336,16 @@ struct ipath_devdata { u8 ipath_ht_slave_off; /* for write combining settings */ unsigned long ipath_wc_cookie; + unsigned long ipath_wc_base; + unsigned long ipath_wc_len; /* ref count for each pkey */ atomic_t ipath_pkeyrefs[4]; /* shadow copy of all exptids physaddr; used only by funcsim */ u64 *ipath_tidsimshadow; /* shadow copy of struct page *'s for exp tid pages */ struct page **ipath_pageshadow; + /* shadow copy of dma handles for exp tid pages */ + dma_addr_t *ipath_physshadow; /* lock to workaround chip bug 9437 */ spinlock_t ipath_tid_lock; @@ -354,13 +359,17 @@ struct ipath_devdata { char *ipath_freezemsg; /* pci access data structure */ struct pci_dev *pcidev; - struct cdev *cdev; - struct class_device *class_dev; + struct cdev *user_cdev; + struct cdev *diag_cdev; + struct class_device *user_class_dev; + struct class_device *diag_class_dev; /* timer used to prevent stats overflow, error throttling, etc. */ struct timer_list ipath_stats_timer; /* check for stale messages in rcv queue */ /* only allow one intr at a time. */ unsigned long ipath_rcv_pending; + void *ipath_dummy_hdrq; /* used after port close */ + dma_addr_t ipath_dummy_hdrq_phys; /* * Shadow copies of registers; size indicates read access size. @@ -418,6 +427,9 @@ struct ipath_devdata { unsigned long ipath_rcvctrl; /* shadow kr_sendctrl */ unsigned long ipath_sendctrl; + /* ports waiting for PIOavail intr */ + unsigned long ipath_portpiowait; + unsigned long ipath_lastcancel; /* to not count armlaunch after cancel */ /* value we put in kr_rcvhdrcnt */ u32 ipath_rcvhdrcnt; @@ -481,8 +493,6 @@ struct ipath_devdata { u32 ipath_htwidth; /* HT speed (200,400,800,1000) from HT config */ u32 ipath_htspeed; - /* ports waiting for PIOavail intr */ - unsigned long ipath_portpiowait; /* * number of sequential ibcstatus change for polling active/quiet * (i.e., link not coming up). @@ -500,8 +510,11 @@ struct ipath_devdata { u16 ipath_lid; /* list of pkeys programmed; 0 if not set */ u16 ipath_pkeys[4]; - /* ASCII serial number, from flash */ - u8 ipath_serial[12]; + /* + * ASCII serial number, from flash, large enough for original + * all digit strings, and longer QLogic serial number format + */ + u8 ipath_serial[16]; /* human readable board version */ u8 ipath_boardversion[80]; /* chip major rev, from ipath_revision */ @@ -516,34 +529,64 @@ struct ipath_devdata { u8 ipath_pci_cacheline; /* LID mask control */ u8 ipath_lmc; -}; + /* Rx Polarity inversion (compensate for ~tx on partner) */ + u8 ipath_rx_pol_inv; + + /* local link integrity counter */ + u32 ipath_lli_counter; + /* local link integrity errors */ + u32 ipath_lli_errors; + /* + * Above counts only cases where _successive_ LocalLinkIntegrity + * errors were seen in the receive headers of kern-packets. + * Below are the three (monotonically increasing) counters + * maintained via GPIO interrupts on iba6120-rev2. + */ + u32 ipath_rxfc_unsupvl_errs; + u32 ipath_overrun_thresh_errs; + u32 ipath_lli_errs; -extern volatile __le64 *ipath_port0_rcvhdrtail; -extern dma_addr_t ipath_port0_rcvhdrtail_dma; + /* + * Not all devices managed by a driver instance are the same + * type, so these fields must be per-device. + */ + u64 ipath_i_bitsextant; + ipath_err_t ipath_e_bitsextant; + ipath_err_t ipath_hwe_bitsextant; + + /* + * Below should be computable from number of ports, + * since they are never modified. + */ + u32 ipath_i_rcvavail_mask; + u32 ipath_i_rcvurg_mask; -#define IPATH_PORT0_RCVHDRTAIL_SIZE PAGE_SIZE + /* + * Register bits for selecting i2c direction and values, used for + * I2C serial flash. + */ + u16 ipath_gpio_sda_num; + u16 ipath_gpio_scl_num; + u64 ipath_gpio_sda; + u64 ipath_gpio_scl; +}; +/* Private data for file operations */ +struct ipath_filedata { + struct ipath_portdata *pd; + unsigned subport; + unsigned tidcursor; +}; extern struct list_head ipath_dev_list; extern spinlock_t ipath_devs_lock; extern struct ipath_devdata *ipath_lookup(int unit); -extern u16 ipath_layer_rcv_opcode; -extern int __ipath_layer_intr(struct ipath_devdata *, u32); -extern int ipath_layer_intr(struct ipath_devdata *, u32); -extern int __ipath_layer_rcv(struct ipath_devdata *, void *, - struct sk_buff *); -extern int __ipath_layer_rcv_lid(struct ipath_devdata *, void *); -extern int __ipath_verbs_piobufavail(struct ipath_devdata *); -extern int __ipath_verbs_rcv(struct ipath_devdata *, void *, void *, u32); - -void ipath_layer_add(struct ipath_devdata *); -void ipath_layer_del(struct ipath_devdata *); - int ipath_init_chip(struct ipath_devdata *, int); int ipath_enable_wc(struct ipath_devdata *dd); void ipath_disable_wc(struct ipath_devdata *dd); int ipath_count_units(int *npresentp, int *nupp, u32 *maxportsp); void ipath_shutdown_device(struct ipath_devdata *); +void ipath_disarm_senderrbufs(struct ipath_devdata *); struct file_operations; int ipath_cdev_init(int minor, char *name, struct file_operations *fops, @@ -551,14 +594,13 @@ int ipath_cdev_init(int minor, char *name, struct file_operations *fops, void ipath_cdev_cleanup(struct cdev **cdevp, struct class_device **class_devp); -int ipath_diag_init(void); -void ipath_diag_cleanup(void); -void ipath_diag_bringup_link(struct ipath_devdata *); +int ipath_diag_add(struct ipath_devdata *); +void ipath_diag_remove(struct ipath_devdata *); -extern wait_queue_head_t ipath_sma_state_wait; +extern wait_queue_head_t ipath_state_wait; int ipath_user_add(struct ipath_devdata *dd); -void ipath_user_del(struct ipath_devdata *dd); +void ipath_user_remove(struct ipath_devdata *dd); struct sk_buff *ipath_alloc_skb(struct ipath_devdata *dd, gfp_t); @@ -582,19 +624,25 @@ void ipath_disarm_piobufs(struct ipath_devdata *, unsigned first, unsigned cnt); int ipath_create_rcvhdrq(struct ipath_devdata *, struct ipath_portdata *); -void ipath_free_pddata(struct ipath_devdata *, u32, int); +void ipath_free_pddata(struct ipath_devdata *, struct ipath_portdata *); int ipath_parse_ushort(const char *str, unsigned short *valp); -int ipath_wait_linkstate(struct ipath_devdata *, u32, int); -void ipath_set_ib_lstate(struct ipath_devdata *, int); void ipath_kreceive(struct ipath_devdata *); int ipath_setrcvhdrsize(struct ipath_devdata *, unsigned); int ipath_reset_device(int); void ipath_get_faststats(unsigned long); +int ipath_set_linkstate(struct ipath_devdata *, u8); +int ipath_set_mtu(struct ipath_devdata *, u16); +int ipath_set_lid(struct ipath_devdata *, u32, u8); +int ipath_set_rx_pol_inv(struct ipath_devdata *dd, u8 new_pol_inv); /* for use in system calls, where we want to know device type, etc. */ -#define port_fp(fp) ((struct ipath_portdata *) (fp)->private_data) +#define port_fp(fp) ((struct ipath_filedata *)(fp)->private_data)->pd +#define subport_fp(fp) \ + ((struct ipath_filedata *)(fp)->private_data)->subport +#define tidcursor_fp(fp) \ + ((struct ipath_filedata *)(fp)->private_data)->tidcursor /* * values for ipath_flags @@ -634,6 +682,15 @@ void ipath_get_faststats(unsigned long); /* can miss port0 rx interrupts */ #define IPATH_POLL_RX_INTR 0x40000 #define IPATH_DISABLED 0x80000 /* administratively disabled */ + /* Use GPIO interrupts for new counters */ +#define IPATH_GPIO_ERRINTRS 0x100000 + +/* Bits in GPIO for the added interrupts */ +#define IPATH_GPIO_PORT0_BIT 2 +#define IPATH_GPIO_RXUVL_BIT 3 +#define IPATH_GPIO_OVRUN_BIT 4 +#define IPATH_GPIO_LLI_BIT 5 +#define IPATH_GPIO_ERRINTR_MASK 0x38 /* portdata flag bit offsets */ /* waiting for a packet to arrive */ @@ -646,10 +703,8 @@ void ipath_free_data(struct ipath_portdata *dd); int ipath_waitfor_mdio_cmdready(struct ipath_devdata *); int ipath_waitfor_complete(struct ipath_devdata *, ipath_kreg, u64, u64 *); u32 __iomem *ipath_getpiobuf(struct ipath_devdata *, u32 *); -/* init PE-800-specific func */ -void ipath_init_pe800_funcs(struct ipath_devdata *); -/* init HT-400-specific func */ -void ipath_init_ht400_funcs(struct ipath_devdata *); +void ipath_init_iba6120_funcs(struct ipath_devdata *); +void ipath_init_iba6110_funcs(struct ipath_devdata *); void ipath_get_eeprom_info(struct ipath_devdata *); u64 ipath_snap_cntr(struct ipath_devdata *, ipath_creg); @@ -720,13 +775,8 @@ u64 ipath_read_kreg64_port(const struct ipath_devdata *, ipath_kreg, * @port: port number * * Return the contents of a register that is virtualized to be per port. - * Prints a debug message and returns -1 on errors (not distinguishable from - * valid contents at runtime; we may add a separate error variable at some - * point). - * - * This is normally not used by the kernel, but may be for debugging, and - * has a different implementation than user mode, which is why it's not in - * _common.h. + * Returns -1 on errors (not distinguishable from valid contents at + * runtime; we may add a separate error variable at some point). */ static inline u32 ipath_read_ureg32(const struct ipath_devdata *dd, ipath_ureg regno, int port) @@ -810,7 +860,7 @@ static inline u32 ipath_read_creg32(const struct ipath_devdata *dd, struct device_driver; -extern const char ipath_core_version[]; +extern const char ib_ipath_version[]; int ipath_driver_create_group(struct device_driver *); void ipath_driver_remove_group(struct device_driver *); @@ -819,12 +869,22 @@ int ipath_device_create_group(struct device *, struct ipath_devdata *); void ipath_device_remove_group(struct device *, struct ipath_devdata *); int ipath_expose_reset(struct device *); +int ipath_diagpkt_add(void); +void ipath_diagpkt_remove(void); + int ipath_init_ipathfs(void); void ipath_exit_ipathfs(void); int ipathfs_add_device(struct ipath_devdata *); int ipathfs_remove_device(struct ipath_devdata *); /* + * dma_addr wrappers - all 0's invalid for hw + */ +dma_addr_t ipath_map_page(struct pci_dev *, struct page *, unsigned long, + size_t, int); +dma_addr_t ipath_map_single(struct pci_dev *, void *, size_t, int); + +/* * Flush write combining store buffers (if present) and perform a write * barrier. */ @@ -840,11 +900,12 @@ const char *ipath_get_unit_name(int unit); extern struct mutex ipath_mutex; -#define IPATH_DRV_NAME "ipath_core" +#define IPATH_DRV_NAME "ib_ipath" #define IPATH_MAJOR 233 -#define IPATH_SMA_MINOR 128 -#define IPATH_DIAG_MINOR 129 -#define IPATH_NMINORS 130 +#define IPATH_USER_MINOR_BASE 0 +#define IPATH_DIAGPKT_MINOR 127 +#define IPATH_DIAG_MINOR_BASE 129 +#define IPATH_NMINORS 255 #define ipath_dev_err(dd,fmt,...) \ do { \ @@ -880,4 +941,20 @@ extern struct mutex ipath_mutex; #endif /* _IPATH_DEBUGGING */ +/* + * this is used for formatting hw error messages... + */ +struct ipath_hwerror_msgs { + u64 mask; + const char *msg; +}; + +#define INFINIPATH_HWE_MSG(a, b) { .mask = INFINIPATH_HWE_##a, .msg = b } + +/* in ipath_intr.c... */ +void ipath_format_hwerrors(u64 hwerrs, + const struct ipath_hwerror_msgs *hwerrmsgs, + size_t nhwerrmsgs, + char *msg, size_t lmsg); + #endif /* _IPATH_KERNEL_H */ diff --git a/drivers/infiniband/hw/ipath/ipath_keys.c b/drivers/infiniband/hw/ipath/ipath_keys.c index 5ae8761f9dd2..9a6cbd05adcd 100644 --- a/drivers/infiniband/hw/ipath/ipath_keys.c +++ b/drivers/infiniband/hw/ipath/ipath_keys.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -33,6 +34,7 @@ #include <asm/io.h> #include "ipath_verbs.h" +#include "ipath_kernel.h" /** * ipath_alloc_lkey - allocate an lkey @@ -59,7 +61,7 @@ int ipath_alloc_lkey(struct ipath_lkey_table *rkt, struct ipath_mregion *mr) r = (r + 1) & (rkt->max - 1); if (r == n) { spin_unlock_irqrestore(&rkt->lock, flags); - _VERBS_INFO("LKEY table full\n"); + ipath_dbg(KERN_INFO "LKEY table full\n"); ret = 0; goto bail; } @@ -116,10 +118,12 @@ void ipath_free_lkey(struct ipath_lkey_table *rkt, u32 lkey) * Check the IB SGE for validity and initialize our internal version * of it. */ -int ipath_lkey_ok(struct ipath_lkey_table *rkt, struct ipath_sge *isge, +int ipath_lkey_ok(struct ipath_qp *qp, struct ipath_sge *isge, struct ib_sge *sge, int acc) { + struct ipath_lkey_table *rkt = &to_idev(qp->ibqp.device)->lk_table; struct ipath_mregion *mr; + unsigned n, m; size_t off; int ret; @@ -137,7 +141,8 @@ int ipath_lkey_ok(struct ipath_lkey_table *rkt, struct ipath_sge *isge, goto bail; } mr = rkt->table[(sge->lkey >> (32 - ib_ipath_lkey_table_size))]; - if (unlikely(mr == NULL || mr->lkey != sge->lkey)) { + if (unlikely(mr == NULL || mr->lkey != sge->lkey || + qp->ibqp.pd != mr->pd)) { ret = 0; goto bail; } @@ -151,20 +156,22 @@ int ipath_lkey_ok(struct ipath_lkey_table *rkt, struct ipath_sge *isge, } off += mr->offset; - isge->mr = mr; - isge->m = 0; - isge->n = 0; - while (off >= mr->map[isge->m]->segs[isge->n].length) { - off -= mr->map[isge->m]->segs[isge->n].length; - isge->n++; - if (isge->n >= IPATH_SEGSZ) { - isge->m++; - isge->n = 0; + m = 0; + n = 0; + while (off >= mr->map[m]->segs[n].length) { + off -= mr->map[m]->segs[n].length; + n++; + if (n >= IPATH_SEGSZ) { + m++; + n = 0; } } - isge->vaddr = mr->map[isge->m]->segs[isge->n].vaddr + off; - isge->length = mr->map[isge->m]->segs[isge->n].length - off; + isge->mr = mr; + isge->vaddr = mr->map[m]->segs[n].vaddr + off; + isge->length = mr->map[m]->segs[n].length - off; isge->sge_length = sge->length; + isge->m = m; + isge->n = n; ret = 1; @@ -183,17 +190,35 @@ bail: * * Return 1 if successful, otherwise 0. */ -int ipath_rkey_ok(struct ipath_ibdev *dev, struct ipath_sge_state *ss, +int ipath_rkey_ok(struct ipath_qp *qp, struct ipath_sge_state *ss, u32 len, u64 vaddr, u32 rkey, int acc) { + struct ipath_ibdev *dev = to_idev(qp->ibqp.device); struct ipath_lkey_table *rkt = &dev->lk_table; struct ipath_sge *sge = &ss->sge; struct ipath_mregion *mr; + unsigned n, m; size_t off; int ret; + /* + * We use RKEY == zero for physical addresses + * (see ipath_get_dma_mr). + */ + if (rkey == 0) { + sge->mr = NULL; + sge->vaddr = phys_to_virt(vaddr); + sge->length = len; + sge->sge_length = len; + ss->sg_list = NULL; + ss->num_sge = 1; + ret = 1; + goto bail; + } + mr = rkt->table[(rkey >> (32 - ib_ipath_lkey_table_size))]; - if (unlikely(mr == NULL || mr->lkey != rkey)) { + if (unlikely(mr == NULL || mr->lkey != rkey || + qp->ibqp.pd != mr->pd)) { ret = 0; goto bail; } @@ -206,20 +231,22 @@ int ipath_rkey_ok(struct ipath_ibdev *dev, struct ipath_sge_state *ss, } off += mr->offset; - sge->mr = mr; - sge->m = 0; - sge->n = 0; - while (off >= mr->map[sge->m]->segs[sge->n].length) { - off -= mr->map[sge->m]->segs[sge->n].length; - sge->n++; - if (sge->n >= IPATH_SEGSZ) { - sge->m++; - sge->n = 0; + m = 0; + n = 0; + while (off >= mr->map[m]->segs[n].length) { + off -= mr->map[m]->segs[n].length; + n++; + if (n >= IPATH_SEGSZ) { + m++; + n = 0; } } - sge->vaddr = mr->map[sge->m]->segs[sge->n].vaddr + off; - sge->length = mr->map[sge->m]->segs[sge->n].length - off; + sge->mr = mr; + sge->vaddr = mr->map[m]->segs[n].vaddr + off; + sge->length = mr->map[m]->segs[n].length - off; sge->sge_length = len; + sge->m = m; + sge->n = n; ss->sg_list = NULL; ss->num_sge = 1; diff --git a/drivers/infiniband/hw/ipath/ipath_layer.c b/drivers/infiniband/hw/ipath/ipath_layer.c index 9ec4ac77b87f..e46aa4ed2a7e 100644 --- a/drivers/infiniband/hw/ipath/ipath_layer.c +++ b/drivers/infiniband/hw/ipath/ipath_layer.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -40,27 +41,21 @@ #include <asm/byteorder.h> #include "ipath_kernel.h" -#include "ips_common.h" #include "ipath_layer.h" +#include "ipath_verbs.h" +#include "ipath_common.h" /* Acquire before ipath_devs_lock. */ static DEFINE_MUTEX(ipath_layer_mutex); -static int ipath_verbs_registered; - u16 ipath_layer_rcv_opcode; static int (*layer_intr)(void *, u32); static int (*layer_rcv)(void *, void *, struct sk_buff *); static int (*layer_rcv_lid)(void *, void *); -static int (*verbs_piobufavail)(void *); -static void (*verbs_rcv)(void *, void *, void *, u32); static void *(*layer_add_one)(int, struct ipath_devdata *); static void (*layer_remove_one)(void *); -static void *(*verbs_add_one)(int, struct ipath_devdata *); -static void (*verbs_remove_one)(void *); -static void (*verbs_timer_cb)(void *); int __ipath_layer_intr(struct ipath_devdata *dd, u32 arg) { @@ -106,288 +101,16 @@ int __ipath_layer_rcv_lid(struct ipath_devdata *dd, void *hdr) return ret; } -int __ipath_verbs_piobufavail(struct ipath_devdata *dd) -{ - int ret = -ENODEV; - - if (dd->verbs_layer.l_arg && verbs_piobufavail) - ret = verbs_piobufavail(dd->verbs_layer.l_arg); - - return ret; -} - -int __ipath_verbs_rcv(struct ipath_devdata *dd, void *rc, void *ebuf, - u32 tlen) -{ - int ret = -ENODEV; - - if (dd->verbs_layer.l_arg && verbs_rcv) { - verbs_rcv(dd->verbs_layer.l_arg, rc, ebuf, tlen); - ret = 0; - } - - return ret; -} - -int ipath_layer_set_linkstate(struct ipath_devdata *dd, u8 newstate) -{ - u32 lstate; - int ret; - - switch (newstate) { - case IPATH_IB_LINKDOWN: - ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKINITCMD_POLL << - INFINIPATH_IBCC_LINKINITCMD_SHIFT); - /* don't wait */ - ret = 0; - goto bail; - - case IPATH_IB_LINKDOWN_SLEEP: - ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKINITCMD_SLEEP << - INFINIPATH_IBCC_LINKINITCMD_SHIFT); - /* don't wait */ - ret = 0; - goto bail; - - case IPATH_IB_LINKDOWN_DISABLE: - ipath_set_ib_lstate(dd, - INFINIPATH_IBCC_LINKINITCMD_DISABLE << - INFINIPATH_IBCC_LINKINITCMD_SHIFT); - /* don't wait */ - ret = 0; - goto bail; - - case IPATH_IB_LINKINIT: - if (dd->ipath_flags & IPATH_LINKINIT) { - ret = 0; - goto bail; - } - ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_INIT << - INFINIPATH_IBCC_LINKCMD_SHIFT); - lstate = IPATH_LINKINIT; - break; - - case IPATH_IB_LINKARM: - if (dd->ipath_flags & IPATH_LINKARMED) { - ret = 0; - goto bail; - } - if (!(dd->ipath_flags & - (IPATH_LINKINIT | IPATH_LINKACTIVE))) { - ret = -EINVAL; - goto bail; - } - ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_ARMED << - INFINIPATH_IBCC_LINKCMD_SHIFT); - /* - * Since the port can transition to ACTIVE by receiving - * a non VL 15 packet, wait for either state. - */ - lstate = IPATH_LINKARMED | IPATH_LINKACTIVE; - break; - - case IPATH_IB_LINKACTIVE: - if (dd->ipath_flags & IPATH_LINKACTIVE) { - ret = 0; - goto bail; - } - if (!(dd->ipath_flags & IPATH_LINKARMED)) { - ret = -EINVAL; - goto bail; - } - ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_ACTIVE << - INFINIPATH_IBCC_LINKCMD_SHIFT); - lstate = IPATH_LINKACTIVE; - break; - - default: - ipath_dbg("Invalid linkstate 0x%x requested\n", newstate); - ret = -EINVAL; - goto bail; - } - ret = ipath_wait_linkstate(dd, lstate, 2000); - -bail: - return ret; -} - -EXPORT_SYMBOL_GPL(ipath_layer_set_linkstate); - -/** - * ipath_layer_set_mtu - set the MTU - * @dd: the infinipath device - * @arg: the new MTU - * - * we can handle "any" incoming size, the issue here is whether we - * need to restrict our outgoing size. For now, we don't do any - * sanity checking on this, and we don't deal with what happens to - * programs that are already running when the size changes. - * NOTE: changing the MTU will usually cause the IBC to go back to - * link initialize (IPATH_IBSTATE_INIT) state... - */ -int ipath_layer_set_mtu(struct ipath_devdata *dd, u16 arg) -{ - u32 piosize; - int changed = 0; - int ret; - - /* - * mtu is IB data payload max. It's the largest power of 2 less - * than piosize (or even larger, since it only really controls the - * largest we can receive; we can send the max of the mtu and - * piosize). We check that it's one of the valid IB sizes. - */ - if (arg != 256 && arg != 512 && arg != 1024 && arg != 2048 && - arg != 4096) { - ipath_dbg("Trying to set invalid mtu %u, failing\n", arg); - ret = -EINVAL; - goto bail; - } - if (dd->ipath_ibmtu == arg) { - ret = 0; /* same as current */ - goto bail; - } - - piosize = dd->ipath_ibmaxlen; - dd->ipath_ibmtu = arg; - - if (arg >= (piosize - IPATH_PIO_MAXIBHDR)) { - /* Only if it's not the initial value (or reset to it) */ - if (piosize != dd->ipath_init_ibmaxlen) { - dd->ipath_ibmaxlen = piosize; - changed = 1; - } - } else if ((arg + IPATH_PIO_MAXIBHDR) != dd->ipath_ibmaxlen) { - piosize = arg + IPATH_PIO_MAXIBHDR; - ipath_cdbg(VERBOSE, "ibmaxlen was 0x%x, setting to 0x%x " - "(mtu 0x%x)\n", dd->ipath_ibmaxlen, piosize, - arg); - dd->ipath_ibmaxlen = piosize; - changed = 1; - } - - if (changed) { - /* - * set the IBC maxpktlength to the size of our pio - * buffers in words - */ - u64 ibc = dd->ipath_ibcctrl; - ibc &= ~(INFINIPATH_IBCC_MAXPKTLEN_MASK << - INFINIPATH_IBCC_MAXPKTLEN_SHIFT); - - piosize = piosize - 2 * sizeof(u32); /* ignore pbc */ - dd->ipath_ibmaxlen = piosize; - piosize /= sizeof(u32); /* in words */ - /* - * for ICRC, which we only send in diag test pkt mode, and - * we don't need to worry about that for mtu - */ - piosize += 1; - - ibc |= piosize << INFINIPATH_IBCC_MAXPKTLEN_SHIFT; - dd->ipath_ibcctrl = ibc; - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, - dd->ipath_ibcctrl); - dd->ipath_f_tidtemplate(dd); - } - - ret = 0; - -bail: - return ret; -} - -EXPORT_SYMBOL_GPL(ipath_layer_set_mtu); - -int ipath_set_sps_lid(struct ipath_devdata *dd, u32 arg, u8 lmc) +void ipath_layer_lid_changed(struct ipath_devdata *dd) { - ipath_stats.sps_lid[dd->ipath_unit] = arg; - dd->ipath_lid = arg; - dd->ipath_lmc = lmc; - mutex_lock(&ipath_layer_mutex); if (dd->ipath_layer.l_arg && layer_intr) layer_intr(dd->ipath_layer.l_arg, IPATH_LAYER_INT_LID); mutex_unlock(&ipath_layer_mutex); - - return 0; } -EXPORT_SYMBOL_GPL(ipath_set_sps_lid); - -int ipath_layer_set_guid(struct ipath_devdata *dd, __be64 guid) -{ - /* XXX - need to inform anyone who cares this just happened. */ - dd->ipath_guid = guid; - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_layer_set_guid); - -__be64 ipath_layer_get_guid(struct ipath_devdata *dd) -{ - return dd->ipath_guid; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_guid); - -u32 ipath_layer_get_nguid(struct ipath_devdata *dd) -{ - return dd->ipath_nguid; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_nguid); - -int ipath_layer_query_device(struct ipath_devdata *dd, u32 * vendor, - u32 * boardrev, u32 * majrev, u32 * minrev) -{ - *vendor = dd->ipath_vendorid; - *boardrev = dd->ipath_boardrev; - *majrev = dd->ipath_majrev; - *minrev = dd->ipath_minrev; - - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_layer_query_device); - -u32 ipath_layer_get_flags(struct ipath_devdata *dd) -{ - return dd->ipath_flags; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_flags); - -struct device *ipath_layer_get_device(struct ipath_devdata *dd) -{ - return &dd->pcidev->dev; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_device); - -u16 ipath_layer_get_deviceid(struct ipath_devdata *dd) -{ - return dd->ipath_deviceid; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_deviceid); - -u64 ipath_layer_get_lastibcstat(struct ipath_devdata *dd) -{ - return dd->ipath_lastibcstat; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_lastibcstat); - -u32 ipath_layer_get_ibmtu(struct ipath_devdata *dd) -{ - return dd->ipath_ibmtu; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_ibmtu); - void ipath_layer_add(struct ipath_devdata *dd) { mutex_lock(&ipath_layer_mutex); @@ -396,14 +119,10 @@ void ipath_layer_add(struct ipath_devdata *dd) dd->ipath_layer.l_arg = layer_add_one(dd->ipath_unit, dd); - if (verbs_add_one) - dd->verbs_layer.l_arg = - verbs_add_one(dd->ipath_unit, dd); - mutex_unlock(&ipath_layer_mutex); } -void ipath_layer_del(struct ipath_devdata *dd) +void ipath_layer_remove(struct ipath_devdata *dd) { mutex_lock(&ipath_layer_mutex); @@ -412,11 +131,6 @@ void ipath_layer_del(struct ipath_devdata *dd) dd->ipath_layer.l_arg = NULL; } - if (dd->verbs_layer.l_arg && verbs_remove_one) { - verbs_remove_one(dd->verbs_layer.l_arg); - dd->verbs_layer.l_arg = NULL; - } - mutex_unlock(&ipath_layer_mutex); } @@ -448,9 +162,6 @@ int ipath_layer_register(void *(*l_add)(int, struct ipath_devdata *), if (dd->ipath_layer.l_arg) continue; - if (!(*dd->ipath_statusp & IPATH_STATUS_SMA)) - *dd->ipath_statusp |= IPATH_STATUS_OIB_SMA; - spin_unlock_irqrestore(&ipath_devs_lock, flags); dd->ipath_layer.l_arg = l_add(dd->ipath_unit, dd); spin_lock_irqsave(&ipath_devs_lock, flags); @@ -494,107 +205,6 @@ void ipath_layer_unregister(void) EXPORT_SYMBOL_GPL(ipath_layer_unregister); -static void __ipath_verbs_timer(unsigned long arg) -{ - struct ipath_devdata *dd = (struct ipath_devdata *) arg; - - /* - * If port 0 receive packet interrupts are not available, or - * can be missed, poll the receive queue - */ - if (dd->ipath_flags & IPATH_POLL_RX_INTR) - ipath_kreceive(dd); - - /* Handle verbs layer timeouts. */ - if (dd->verbs_layer.l_arg && verbs_timer_cb) - verbs_timer_cb(dd->verbs_layer.l_arg); - - mod_timer(&dd->verbs_layer.l_timer, jiffies + 1); -} - -/** - * ipath_verbs_register - verbs layer registration - * @l_piobufavail: callback for when PIO buffers become available - * @l_rcv: callback for receiving a packet - * @l_timer_cb: timer callback - * @ipath_devdata: device data structure is put here - */ -int ipath_verbs_register(void *(*l_add)(int, struct ipath_devdata *), - void (*l_remove)(void *arg), - int (*l_piobufavail) (void *arg), - void (*l_rcv) (void *arg, void *rhdr, - void *data, u32 tlen), - void (*l_timer_cb) (void *arg)) -{ - struct ipath_devdata *dd, *tmp; - unsigned long flags; - - mutex_lock(&ipath_layer_mutex); - - verbs_add_one = l_add; - verbs_remove_one = l_remove; - verbs_piobufavail = l_piobufavail; - verbs_rcv = l_rcv; - verbs_timer_cb = l_timer_cb; - - spin_lock_irqsave(&ipath_devs_lock, flags); - - list_for_each_entry_safe(dd, tmp, &ipath_dev_list, ipath_list) { - if (!(dd->ipath_flags & IPATH_INITTED)) - continue; - - if (dd->verbs_layer.l_arg) - continue; - - spin_unlock_irqrestore(&ipath_devs_lock, flags); - dd->verbs_layer.l_arg = l_add(dd->ipath_unit, dd); - spin_lock_irqsave(&ipath_devs_lock, flags); - } - - spin_unlock_irqrestore(&ipath_devs_lock, flags); - mutex_unlock(&ipath_layer_mutex); - - ipath_verbs_registered = 1; - - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_verbs_register); - -void ipath_verbs_unregister(void) -{ - struct ipath_devdata *dd, *tmp; - unsigned long flags; - - mutex_lock(&ipath_layer_mutex); - spin_lock_irqsave(&ipath_devs_lock, flags); - - list_for_each_entry_safe(dd, tmp, &ipath_dev_list, ipath_list) { - *dd->ipath_statusp &= ~IPATH_STATUS_OIB_SMA; - - if (dd->verbs_layer.l_arg && verbs_remove_one) { - spin_unlock_irqrestore(&ipath_devs_lock, flags); - verbs_remove_one(dd->verbs_layer.l_arg); - spin_lock_irqsave(&ipath_devs_lock, flags); - dd->verbs_layer.l_arg = NULL; - } - } - - spin_unlock_irqrestore(&ipath_devs_lock, flags); - - verbs_add_one = NULL; - verbs_remove_one = NULL; - verbs_piobufavail = NULL; - verbs_rcv = NULL; - verbs_timer_cb = NULL; - - ipath_verbs_registered = 0; - - mutex_unlock(&ipath_layer_mutex); -} - -EXPORT_SYMBOL_GPL(ipath_verbs_unregister); - int ipath_layer_open(struct ipath_devdata *dd, u32 * pktmax) { int ret; @@ -607,7 +217,7 @@ int ipath_layer_open(struct ipath_devdata *dd, u32 * pktmax) goto bail; } - ret = ipath_setrcvhdrsize(dd, NUM_OF_EXTRA_WORDS_IN_HEADER_QUEUE); + ret = ipath_setrcvhdrsize(dd, IPATH_HEADER_QUEUE_WORDS); if (ret < 0) goto bail; @@ -616,9 +226,9 @@ int ipath_layer_open(struct ipath_devdata *dd, u32 * pktmax) if (*dd->ipath_statusp & IPATH_STATUS_IB_READY) intval |= IPATH_LAYER_INT_IF_UP; - if (ipath_stats.sps_lid[dd->ipath_unit]) + if (dd->ipath_lid) intval |= IPATH_LAYER_INT_LID; - if (ipath_stats.sps_mlid[dd->ipath_unit]) + if (dd->ipath_mlid) intval |= IPATH_LAYER_INT_BCAST; /* * do this on open, in case low level is already up and @@ -683,385 +293,6 @@ u16 ipath_layer_get_bcast(struct ipath_devdata *dd) EXPORT_SYMBOL_GPL(ipath_layer_get_bcast); -u32 ipath_layer_get_cr_errpkey(struct ipath_devdata *dd) -{ - return ipath_read_creg32(dd, dd->ipath_cregs->cr_errpkey); -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_cr_errpkey); - -static void update_sge(struct ipath_sge_state *ss, u32 length) -{ - struct ipath_sge *sge = &ss->sge; - - sge->vaddr += length; - sge->length -= length; - sge->sge_length -= length; - if (sge->sge_length == 0) { - if (--ss->num_sge) - *sge = *ss->sg_list++; - } else if (sge->length == 0 && sge->mr != NULL) { - if (++sge->n >= IPATH_SEGSZ) { - if (++sge->m >= sge->mr->mapsz) - return; - sge->n = 0; - } - sge->vaddr = sge->mr->map[sge->m]->segs[sge->n].vaddr; - sge->length = sge->mr->map[sge->m]->segs[sge->n].length; - } -} - -#ifdef __LITTLE_ENDIAN -static inline u32 get_upper_bits(u32 data, u32 shift) -{ - return data >> shift; -} - -static inline u32 set_upper_bits(u32 data, u32 shift) -{ - return data << shift; -} - -static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off) -{ - data <<= ((sizeof(u32) - n) * BITS_PER_BYTE); - data >>= ((sizeof(u32) - n - off) * BITS_PER_BYTE); - return data; -} -#else -static inline u32 get_upper_bits(u32 data, u32 shift) -{ - return data << shift; -} - -static inline u32 set_upper_bits(u32 data, u32 shift) -{ - return data >> shift; -} - -static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off) -{ - data >>= ((sizeof(u32) - n) * BITS_PER_BYTE); - data <<= ((sizeof(u32) - n - off) * BITS_PER_BYTE); - return data; -} -#endif - -static void copy_io(u32 __iomem *piobuf, struct ipath_sge_state *ss, - u32 length) -{ - u32 extra = 0; - u32 data = 0; - u32 last; - - while (1) { - u32 len = ss->sge.length; - u32 off; - - BUG_ON(len == 0); - if (len > length) - len = length; - if (len > ss->sge.sge_length) - len = ss->sge.sge_length; - /* If the source address is not aligned, try to align it. */ - off = (unsigned long)ss->sge.vaddr & (sizeof(u32) - 1); - if (off) { - u32 *addr = (u32 *)((unsigned long)ss->sge.vaddr & - ~(sizeof(u32) - 1)); - u32 v = get_upper_bits(*addr, off * BITS_PER_BYTE); - u32 y; - - y = sizeof(u32) - off; - if (len > y) - len = y; - if (len + extra >= sizeof(u32)) { - data |= set_upper_bits(v, extra * - BITS_PER_BYTE); - len = sizeof(u32) - extra; - if (len == length) { - last = data; - break; - } - __raw_writel(data, piobuf); - piobuf++; - extra = 0; - data = 0; - } else { - /* Clear unused upper bytes */ - data |= clear_upper_bytes(v, len, extra); - if (len == length) { - last = data; - break; - } - extra += len; - } - } else if (extra) { - /* Source address is aligned. */ - u32 *addr = (u32 *) ss->sge.vaddr; - int shift = extra * BITS_PER_BYTE; - int ushift = 32 - shift; - u32 l = len; - - while (l >= sizeof(u32)) { - u32 v = *addr; - - data |= set_upper_bits(v, shift); - __raw_writel(data, piobuf); - data = get_upper_bits(v, ushift); - piobuf++; - addr++; - l -= sizeof(u32); - } - /* - * We still have 'extra' number of bytes leftover. - */ - if (l) { - u32 v = *addr; - - if (l + extra >= sizeof(u32)) { - data |= set_upper_bits(v, shift); - len -= l + extra - sizeof(u32); - if (len == length) { - last = data; - break; - } - __raw_writel(data, piobuf); - piobuf++; - extra = 0; - data = 0; - } else { - /* Clear unused upper bytes */ - data |= clear_upper_bytes(v, l, - extra); - if (len == length) { - last = data; - break; - } - extra += l; - } - } else if (len == length) { - last = data; - break; - } - } else if (len == length) { - u32 w; - - /* - * Need to round up for the last dword in the - * packet. - */ - w = (len + 3) >> 2; - __iowrite32_copy(piobuf, ss->sge.vaddr, w - 1); - piobuf += w - 1; - last = ((u32 *) ss->sge.vaddr)[w - 1]; - break; - } else { - u32 w = len >> 2; - - __iowrite32_copy(piobuf, ss->sge.vaddr, w); - piobuf += w; - - extra = len & (sizeof(u32) - 1); - if (extra) { - u32 v = ((u32 *) ss->sge.vaddr)[w]; - - /* Clear unused upper bytes */ - data = clear_upper_bytes(v, extra, 0); - } - } - update_sge(ss, len); - length -= len; - } - /* Update address before sending packet. */ - update_sge(ss, length); - /* must flush early everything before trigger word */ - ipath_flush_wc(); - __raw_writel(last, piobuf); - /* be sure trigger word is written */ - ipath_flush_wc(); -} - -/** - * ipath_verbs_send - send a packet from the verbs layer - * @dd: the infinipath device - * @hdrwords: the number of works in the header - * @hdr: the packet header - * @len: the length of the packet in bytes - * @ss: the SGE to send - * - * This is like ipath_sma_send_pkt() in that we need to be able to send - * packets after the chip is initialized (MADs) but also like - * ipath_layer_send_hdr() since its used by the verbs layer. - */ -int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords, - u32 *hdr, u32 len, struct ipath_sge_state *ss) -{ - u32 __iomem *piobuf; - u32 plen; - int ret; - - /* +1 is for the qword padding of pbc */ - plen = hdrwords + ((len + 3) >> 2) + 1; - if (unlikely((plen << 2) > dd->ipath_ibmaxlen)) { - ipath_dbg("packet len 0x%x too long, failing\n", plen); - ret = -EINVAL; - goto bail; - } - - /* Get a PIO buffer to use. */ - piobuf = ipath_getpiobuf(dd, NULL); - if (unlikely(piobuf == NULL)) { - ret = -EBUSY; - goto bail; - } - - /* - * Write len to control qword, no flags. - * We have to flush after the PBC for correctness on some cpus - * or WC buffer can be written out of order. - */ - writeq(plen, piobuf); - ipath_flush_wc(); - piobuf += 2; - if (len == 0) { - /* - * If there is just the header portion, must flush before - * writing last word of header for correctness, and after - * the last header word (trigger word). - */ - __iowrite32_copy(piobuf, hdr, hdrwords - 1); - ipath_flush_wc(); - __raw_writel(hdr[hdrwords - 1], piobuf + hdrwords - 1); - ipath_flush_wc(); - ret = 0; - goto bail; - } - - __iowrite32_copy(piobuf, hdr, hdrwords); - piobuf += hdrwords; - - /* The common case is aligned and contained in one segment. */ - if (likely(ss->num_sge == 1 && len <= ss->sge.length && - !((unsigned long)ss->sge.vaddr & (sizeof(u32) - 1)))) { - u32 w; - u32 *addr = (u32 *) ss->sge.vaddr; - - /* Update address before sending packet. */ - update_sge(ss, len); - /* Need to round up for the last dword in the packet. */ - w = (len + 3) >> 2; - __iowrite32_copy(piobuf, addr, w - 1); - /* must flush early everything before trigger word */ - ipath_flush_wc(); - __raw_writel(addr[w - 1], piobuf + w - 1); - /* be sure trigger word is written */ - ipath_flush_wc(); - ret = 0; - goto bail; - } - copy_io(piobuf, ss, len); - ret = 0; - -bail: - return ret; -} - -EXPORT_SYMBOL_GPL(ipath_verbs_send); - -int ipath_layer_snapshot_counters(struct ipath_devdata *dd, u64 *swords, - u64 *rwords, u64 *spkts, u64 *rpkts, - u64 *xmit_wait) -{ - int ret; - - if (!(dd->ipath_flags & IPATH_INITTED)) { - /* no hardware, freeze, etc. */ - ipath_dbg("unit %u not usable\n", dd->ipath_unit); - ret = -EINVAL; - goto bail; - } - *swords = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt); - *rwords = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt); - *spkts = ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktsendcnt); - *rpkts = ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktrcvcnt); - *xmit_wait = ipath_snap_cntr(dd, dd->ipath_cregs->cr_sendstallcnt); - - ret = 0; - -bail: - return ret; -} - -EXPORT_SYMBOL_GPL(ipath_layer_snapshot_counters); - -/** - * ipath_layer_get_counters - get various chip counters - * @dd: the infinipath device - * @cntrs: counters are placed here - * - * Return the counters needed by recv_pma_get_portcounters(). - */ -int ipath_layer_get_counters(struct ipath_devdata *dd, - struct ipath_layer_counters *cntrs) -{ - int ret; - - if (!(dd->ipath_flags & IPATH_INITTED)) { - /* no hardware, freeze, etc. */ - ipath_dbg("unit %u not usable\n", dd->ipath_unit); - ret = -EINVAL; - goto bail; - } - cntrs->symbol_error_counter = - ipath_snap_cntr(dd, dd->ipath_cregs->cr_ibsymbolerrcnt); - cntrs->link_error_recovery_counter = - ipath_snap_cntr(dd, dd->ipath_cregs->cr_iblinkerrrecovcnt); - cntrs->link_downed_counter = - ipath_snap_cntr(dd, dd->ipath_cregs->cr_iblinkdowncnt); - cntrs->port_rcv_errors = - ipath_snap_cntr(dd, dd->ipath_cregs->cr_rxdroppktcnt) + - ipath_snap_cntr(dd, dd->ipath_cregs->cr_rcvovflcnt) + - ipath_snap_cntr(dd, dd->ipath_cregs->cr_portovflcnt) + - ipath_snap_cntr(dd, dd->ipath_cregs->cr_errrcvflowctrlcnt) + - ipath_snap_cntr(dd, dd->ipath_cregs->cr_err_rlencnt) + - ipath_snap_cntr(dd, dd->ipath_cregs->cr_invalidrlencnt) + - ipath_snap_cntr(dd, dd->ipath_cregs->cr_erricrccnt) + - ipath_snap_cntr(dd, dd->ipath_cregs->cr_errvcrccnt) + - ipath_snap_cntr(dd, dd->ipath_cregs->cr_errlpcrccnt) + - ipath_snap_cntr(dd, dd->ipath_cregs->cr_errlinkcnt) + - ipath_snap_cntr(dd, dd->ipath_cregs->cr_badformatcnt); - cntrs->port_rcv_remphys_errors = - ipath_snap_cntr(dd, dd->ipath_cregs->cr_rcvebpcnt); - cntrs->port_xmit_discards = - ipath_snap_cntr(dd, dd->ipath_cregs->cr_unsupvlcnt); - cntrs->port_xmit_data = - ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt); - cntrs->port_rcv_data = - ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt); - cntrs->port_xmit_packets = - ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktsendcnt); - cntrs->port_rcv_packets = - ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktrcvcnt); - - ret = 0; - -bail: - return ret; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_counters); - -int ipath_layer_want_buffer(struct ipath_devdata *dd) -{ - set_bit(IPATH_S_PIOINTBUFAVAIL, &dd->ipath_sendctrl); - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl); - - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_layer_want_buffer); - int ipath_layer_send_hdr(struct ipath_devdata *dd, struct ether_header *hdr) { int ret = 0; @@ -1086,10 +317,10 @@ int ipath_layer_send_hdr(struct ipath_devdata *dd, struct ether_header *hdr) } vlsllnh = *((__be16 *) hdr); - if (vlsllnh != htons(IPS_LRH_BTH)) { + if (vlsllnh != htons(IPATH_LRH_BTH)) { ipath_dbg("Warning: lrh[0] wrong (%x, not %x); " "not sending\n", be16_to_cpu(vlsllnh), - IPS_LRH_BTH); + IPATH_LRH_BTH); ret = -EINVAL; } if (ret) @@ -1133,389 +364,3 @@ int ipath_layer_set_piointbufavail_int(struct ipath_devdata *dd) } EXPORT_SYMBOL_GPL(ipath_layer_set_piointbufavail_int); - -int ipath_layer_enable_timer(struct ipath_devdata *dd) -{ - /* - * HT-400 has a design flaw where the chip and kernel idea - * of the tail register don't always agree, and therefore we won't - * get an interrupt on the next packet received. - * If the board supports per packet receive interrupts, use it. - * Otherwise, the timer function periodically checks for packets - * to cover this case. - * Either way, the timer is needed for verbs layer related - * processing. - */ - if (dd->ipath_flags & IPATH_GPIO_INTR) { - ipath_write_kreg(dd, dd->ipath_kregs->kr_debugportselect, - 0x2074076542310ULL); - /* Enable GPIO bit 2 interrupt */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_mask, - (u64) (1 << 2)); - } - - init_timer(&dd->verbs_layer.l_timer); - dd->verbs_layer.l_timer.function = __ipath_verbs_timer; - dd->verbs_layer.l_timer.data = (unsigned long)dd; - dd->verbs_layer.l_timer.expires = jiffies + 1; - add_timer(&dd->verbs_layer.l_timer); - - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_layer_enable_timer); - -int ipath_layer_disable_timer(struct ipath_devdata *dd) -{ - /* Disable GPIO bit 2 interrupt */ - if (dd->ipath_flags & IPATH_GPIO_INTR) - ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_mask, 0); - - del_timer_sync(&dd->verbs_layer.l_timer); - - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_layer_disable_timer); - -/** - * ipath_layer_set_verbs_flags - set the verbs layer flags - * @dd: the infinipath device - * @flags: the flags to set - */ -int ipath_layer_set_verbs_flags(struct ipath_devdata *dd, unsigned flags) -{ - struct ipath_devdata *ss; - unsigned long lflags; - - spin_lock_irqsave(&ipath_devs_lock, lflags); - - list_for_each_entry(ss, &ipath_dev_list, ipath_list) { - if (!(ss->ipath_flags & IPATH_INITTED)) - continue; - if ((flags & IPATH_VERBS_KERNEL_SMA) && - !(*ss->ipath_statusp & IPATH_STATUS_SMA)) - *ss->ipath_statusp |= IPATH_STATUS_OIB_SMA; - else - *ss->ipath_statusp &= ~IPATH_STATUS_OIB_SMA; - } - - spin_unlock_irqrestore(&ipath_devs_lock, lflags); - - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_layer_set_verbs_flags); - -/** - * ipath_layer_get_npkeys - return the size of the PKEY table for port 0 - * @dd: the infinipath device - */ -unsigned ipath_layer_get_npkeys(struct ipath_devdata *dd) -{ - return ARRAY_SIZE(dd->ipath_pd[0]->port_pkeys); -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_npkeys); - -/** - * ipath_layer_get_pkey - return the indexed PKEY from the port 0 PKEY table - * @dd: the infinipath device - * @index: the PKEY index - */ -unsigned ipath_layer_get_pkey(struct ipath_devdata *dd, unsigned index) -{ - unsigned ret; - - if (index >= ARRAY_SIZE(dd->ipath_pd[0]->port_pkeys)) - ret = 0; - else - ret = dd->ipath_pd[0]->port_pkeys[index]; - - return ret; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_pkey); - -/** - * ipath_layer_get_pkeys - return the PKEY table for port 0 - * @dd: the infinipath device - * @pkeys: the pkey table is placed here - */ -int ipath_layer_get_pkeys(struct ipath_devdata *dd, u16 * pkeys) -{ - struct ipath_portdata *pd = dd->ipath_pd[0]; - - memcpy(pkeys, pd->port_pkeys, sizeof(pd->port_pkeys)); - - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_pkeys); - -/** - * rm_pkey - decrecment the reference count for the given PKEY - * @dd: the infinipath device - * @key: the PKEY index - * - * Return true if this was the last reference and the hardware table entry - * needs to be changed. - */ -static int rm_pkey(struct ipath_devdata *dd, u16 key) -{ - int i; - int ret; - - for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { - if (dd->ipath_pkeys[i] != key) - continue; - if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) { - dd->ipath_pkeys[i] = 0; - ret = 1; - goto bail; - } - break; - } - - ret = 0; - -bail: - return ret; -} - -/** - * add_pkey - add the given PKEY to the hardware table - * @dd: the infinipath device - * @key: the PKEY - * - * Return an error code if unable to add the entry, zero if no change, - * or 1 if the hardware PKEY register needs to be updated. - */ -static int add_pkey(struct ipath_devdata *dd, u16 key) -{ - int i; - u16 lkey = key & 0x7FFF; - int any = 0; - int ret; - - if (lkey == 0x7FFF) { - ret = 0; - goto bail; - } - - /* Look for an empty slot or a matching PKEY. */ - for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { - if (!dd->ipath_pkeys[i]) { - any++; - continue; - } - /* If it matches exactly, try to increment the ref count */ - if (dd->ipath_pkeys[i] == key) { - if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) { - ret = 0; - goto bail; - } - /* Lost the race. Look for an empty slot below. */ - atomic_dec(&dd->ipath_pkeyrefs[i]); - any++; - } - /* - * It makes no sense to have both the limited and unlimited - * PKEY set at the same time since the unlimited one will - * disable the limited one. - */ - if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) { - ret = -EEXIST; - goto bail; - } - } - if (!any) { - ret = -EBUSY; - goto bail; - } - for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { - if (!dd->ipath_pkeys[i] && - atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) { - /* for ipathstats, etc. */ - ipath_stats.sps_pkeys[i] = lkey; - dd->ipath_pkeys[i] = key; - ret = 1; - goto bail; - } - } - ret = -EBUSY; - -bail: - return ret; -} - -/** - * ipath_layer_set_pkeys - set the PKEY table for port 0 - * @dd: the infinipath device - * @pkeys: the PKEY table - */ -int ipath_layer_set_pkeys(struct ipath_devdata *dd, u16 * pkeys) -{ - struct ipath_portdata *pd; - int i; - int changed = 0; - - pd = dd->ipath_pd[0]; - - for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) { - u16 key = pkeys[i]; - u16 okey = pd->port_pkeys[i]; - - if (key == okey) - continue; - /* - * The value of this PKEY table entry is changing. - * Remove the old entry in the hardware's array of PKEYs. - */ - if (okey & 0x7FFF) - changed |= rm_pkey(dd, okey); - if (key & 0x7FFF) { - int ret = add_pkey(dd, key); - - if (ret < 0) - key = 0; - else - changed |= ret; - } - pd->port_pkeys[i] = key; - } - if (changed) { - u64 pkey; - - pkey = (u64) dd->ipath_pkeys[0] | - ((u64) dd->ipath_pkeys[1] << 16) | - ((u64) dd->ipath_pkeys[2] << 32) | - ((u64) dd->ipath_pkeys[3] << 48); - ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n", - (unsigned long long) pkey); - ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey, - pkey); - } - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_layer_set_pkeys); - -/** - * ipath_layer_get_linkdowndefaultstate - get the default linkdown state - * @dd: the infinipath device - * - * Returns zero if the default is POLL, 1 if the default is SLEEP. - */ -int ipath_layer_get_linkdowndefaultstate(struct ipath_devdata *dd) -{ - return !!(dd->ipath_ibcctrl & INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE); -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_linkdowndefaultstate); - -/** - * ipath_layer_set_linkdowndefaultstate - set the default linkdown state - * @dd: the infinipath device - * @sleep: the new state - * - * Note that this will only take effect when the link state changes. - */ -int ipath_layer_set_linkdowndefaultstate(struct ipath_devdata *dd, - int sleep) -{ - if (sleep) - dd->ipath_ibcctrl |= INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE; - else - dd->ipath_ibcctrl &= ~INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, - dd->ipath_ibcctrl); - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_layer_set_linkdowndefaultstate); - -int ipath_layer_get_phyerrthreshold(struct ipath_devdata *dd) -{ - return (dd->ipath_ibcctrl >> - INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & - INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_phyerrthreshold); - -/** - * ipath_layer_set_phyerrthreshold - set the physical error threshold - * @dd: the infinipath device - * @n: the new threshold - * - * Note that this will only take effect when the link state changes. - */ -int ipath_layer_set_phyerrthreshold(struct ipath_devdata *dd, unsigned n) -{ - unsigned v; - - v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & - INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; - if (v != n) { - dd->ipath_ibcctrl &= - ~(INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK << - INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT); - dd->ipath_ibcctrl |= - (u64) n << INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT; - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, - dd->ipath_ibcctrl); - } - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_layer_set_phyerrthreshold); - -int ipath_layer_get_overrunthreshold(struct ipath_devdata *dd) -{ - return (dd->ipath_ibcctrl >> - INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) & - INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK; -} - -EXPORT_SYMBOL_GPL(ipath_layer_get_overrunthreshold); - -/** - * ipath_layer_set_overrunthreshold - set the overrun threshold - * @dd: the infinipath device - * @n: the new threshold - * - * Note that this will only take effect when the link state changes. - */ -int ipath_layer_set_overrunthreshold(struct ipath_devdata *dd, unsigned n) -{ - unsigned v; - - v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) & - INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK; - if (v != n) { - dd->ipath_ibcctrl &= - ~(INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK << - INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT); - dd->ipath_ibcctrl |= - (u64) n << INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT; - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, - dd->ipath_ibcctrl); - } - return 0; -} - -EXPORT_SYMBOL_GPL(ipath_layer_set_overrunthreshold); - -int ipath_layer_get_boardname(struct ipath_devdata *dd, char *name, - size_t namelen) -{ - return dd->ipath_f_get_boardname(dd, name, namelen); -} -EXPORT_SYMBOL_GPL(ipath_layer_get_boardname); - -u32 ipath_layer_get_rcvhdrentsize(struct ipath_devdata *dd) -{ - return dd->ipath_rcvhdrentsize; -} -EXPORT_SYMBOL_GPL(ipath_layer_get_rcvhdrentsize); diff --git a/drivers/infiniband/hw/ipath/ipath_layer.h b/drivers/infiniband/hw/ipath/ipath_layer.h index 6fefd15bd2da..3854a4eae684 100644 --- a/drivers/infiniband/hw/ipath/ipath_layer.h +++ b/drivers/infiniband/hw/ipath/ipath_layer.h @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -39,71 +40,9 @@ */ struct sk_buff; -struct ipath_sge_state; struct ipath_devdata; struct ether_header; -struct ipath_layer_counters { - u64 symbol_error_counter; - u64 link_error_recovery_counter; - u64 link_downed_counter; - u64 port_rcv_errors; - u64 port_rcv_remphys_errors; - u64 port_xmit_discards; - u64 port_xmit_data; - u64 port_rcv_data; - u64 port_xmit_packets; - u64 port_rcv_packets; -}; - -/* - * A segment is a linear region of low physical memory. - * XXX Maybe we should use phys addr here and kmap()/kunmap(). - * Used by the verbs layer. - */ -struct ipath_seg { - void *vaddr; - size_t length; -}; - -/* The number of ipath_segs that fit in a page. */ -#define IPATH_SEGSZ (PAGE_SIZE / sizeof (struct ipath_seg)) - -struct ipath_segarray { - struct ipath_seg segs[IPATH_SEGSZ]; -}; - -struct ipath_mregion { - u64 user_base; /* User's address for this region */ - u64 iova; /* IB start address of this region */ - size_t length; - u32 lkey; - u32 offset; /* offset (bytes) to start of region */ - int access_flags; - u32 max_segs; /* number of ipath_segs in all the arrays */ - u32 mapsz; /* size of the map array */ - struct ipath_segarray *map[0]; /* the segments */ -}; - -/* - * These keep track of the copy progress within a memory region. - * Used by the verbs layer. - */ -struct ipath_sge { - struct ipath_mregion *mr; - void *vaddr; /* current pointer into the segment */ - u32 sge_length; /* length of the SGE */ - u32 length; /* remaining length of the segment */ - u16 m; /* current index: mr->map[m] */ - u16 n; /* current index: mr->map[m]->segs[n] */ -}; - -struct ipath_sge_state { - struct ipath_sge *sg_list; /* next SGE to be used if any */ - struct ipath_sge sge; /* progress state for the current SGE */ - u8 num_sge; -}; - int ipath_layer_register(void *(*l_add)(int, struct ipath_devdata *), void (*l_remove)(void *), int (*l_intr)(void *, u32), @@ -111,60 +50,14 @@ int ipath_layer_register(void *(*l_add)(int, struct ipath_devdata *), struct sk_buff *), u16 rcv_opcode, int (*l_rcv_lid)(void *, void *)); -int ipath_verbs_register(void *(*l_add)(int, struct ipath_devdata *), - void (*l_remove)(void *arg), - int (*l_piobufavail)(void *arg), - void (*l_rcv)(void *arg, void *rhdr, - void *data, u32 tlen), - void (*l_timer_cb)(void *arg)); void ipath_layer_unregister(void); -void ipath_verbs_unregister(void); int ipath_layer_open(struct ipath_devdata *, u32 * pktmax); u16 ipath_layer_get_lid(struct ipath_devdata *dd); int ipath_layer_get_mac(struct ipath_devdata *dd, u8 *); u16 ipath_layer_get_bcast(struct ipath_devdata *dd); -u32 ipath_layer_get_cr_errpkey(struct ipath_devdata *dd); -int ipath_layer_set_linkstate(struct ipath_devdata *dd, u8 state); -int ipath_layer_set_mtu(struct ipath_devdata *, u16); -int ipath_set_sps_lid(struct ipath_devdata *, u32, u8); int ipath_layer_send_hdr(struct ipath_devdata *dd, struct ether_header *hdr); -int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords, - u32 * hdr, u32 len, struct ipath_sge_state *ss); int ipath_layer_set_piointbufavail_int(struct ipath_devdata *dd); -int ipath_layer_get_boardname(struct ipath_devdata *dd, char *name, - size_t namelen); -int ipath_layer_snapshot_counters(struct ipath_devdata *dd, u64 *swords, - u64 *rwords, u64 *spkts, u64 *rpkts, - u64 *xmit_wait); -int ipath_layer_get_counters(struct ipath_devdata *dd, - struct ipath_layer_counters *cntrs); -int ipath_layer_want_buffer(struct ipath_devdata *dd); -int ipath_layer_set_guid(struct ipath_devdata *, __be64 guid); -__be64 ipath_layer_get_guid(struct ipath_devdata *); -u32 ipath_layer_get_nguid(struct ipath_devdata *); -int ipath_layer_query_device(struct ipath_devdata *, u32 * vendor, - u32 * boardrev, u32 * majrev, u32 * minrev); -u32 ipath_layer_get_flags(struct ipath_devdata *dd); -struct device *ipath_layer_get_device(struct ipath_devdata *dd); -u16 ipath_layer_get_deviceid(struct ipath_devdata *dd); -u64 ipath_layer_get_lastibcstat(struct ipath_devdata *dd); -u32 ipath_layer_get_ibmtu(struct ipath_devdata *dd); -int ipath_layer_enable_timer(struct ipath_devdata *dd); -int ipath_layer_disable_timer(struct ipath_devdata *dd); -int ipath_layer_set_verbs_flags(struct ipath_devdata *dd, unsigned flags); -unsigned ipath_layer_get_npkeys(struct ipath_devdata *dd); -unsigned ipath_layer_get_pkey(struct ipath_devdata *dd, unsigned index); -int ipath_layer_get_pkeys(struct ipath_devdata *dd, u16 *pkeys); -int ipath_layer_set_pkeys(struct ipath_devdata *dd, u16 *pkeys); -int ipath_layer_get_linkdowndefaultstate(struct ipath_devdata *dd); -int ipath_layer_set_linkdowndefaultstate(struct ipath_devdata *dd, - int sleep); -int ipath_layer_get_phyerrthreshold(struct ipath_devdata *dd); -int ipath_layer_set_phyerrthreshold(struct ipath_devdata *dd, unsigned n); -int ipath_layer_get_overrunthreshold(struct ipath_devdata *dd); -int ipath_layer_set_overrunthreshold(struct ipath_devdata *dd, unsigned n); -u32 ipath_layer_get_rcvhdrentsize(struct ipath_devdata *dd); /* ipath_ether interrupt values */ #define IPATH_LAYER_INT_IF_UP 0x2 @@ -173,9 +66,6 @@ u32 ipath_layer_get_rcvhdrentsize(struct ipath_devdata *dd); #define IPATH_LAYER_INT_SEND_CONTINUE 0x10 #define IPATH_LAYER_INT_BCAST 0x40 -/* _verbs_layer.l_flags */ -#define IPATH_VERBS_KERNEL_SMA 0x1 - extern unsigned ipath_debug; /* debugging bit mask */ #endif /* _IPATH_LAYER_H */ diff --git a/drivers/infiniband/hw/ipath/ipath_mad.c b/drivers/infiniband/hw/ipath/ipath_mad.c index 1a9d0a2c33c3..25908b02fbe5 100644 --- a/drivers/infiniband/hw/ipath/ipath_mad.c +++ b/drivers/infiniband/hw/ipath/ipath_mad.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -34,7 +35,7 @@ #include "ipath_kernel.h" #include "ipath_verbs.h" -#include "ips_common.h" +#include "ipath_common.h" #define IB_SMP_UNSUP_VERSION __constant_htons(0x0004) #define IB_SMP_UNSUP_METHOD __constant_htons(0x0008) @@ -84,9 +85,10 @@ static int recv_subn_get_nodeinfo(struct ib_smp *smp, { struct nodeinfo *nip = (struct nodeinfo *)&smp->data; struct ipath_devdata *dd = to_idev(ibdev)->dd; - u32 vendor, boardid, majrev, minrev; + u32 vendor, majrev, minrev; - if (smp->attr_mod) + /* GUID 0 is illegal */ + if (smp->attr_mod || (dd->ipath_guid == 0)) smp->status |= IB_SMP_INVALID_FIELD; nip->base_version = 1; @@ -100,13 +102,15 @@ static int recv_subn_get_nodeinfo(struct ib_smp *smp, nip->num_ports = ibdev->phys_port_cnt; /* This is already in network order */ nip->sys_guid = to_idev(ibdev)->sys_image_guid; - nip->node_guid = ipath_layer_get_guid(dd); + nip->node_guid = dd->ipath_guid; nip->port_guid = nip->sys_guid; - nip->partition_cap = cpu_to_be16(ipath_layer_get_npkeys(dd)); - nip->device_id = cpu_to_be16(ipath_layer_get_deviceid(dd)); - ipath_layer_query_device(dd, &vendor, &boardid, &majrev, &minrev); + nip->partition_cap = cpu_to_be16(ipath_get_npkeys(dd)); + nip->device_id = cpu_to_be16(dd->ipath_deviceid); + majrev = dd->ipath_majrev; + minrev = dd->ipath_minrev; nip->revision = cpu_to_be32((majrev << 16) | minrev); nip->local_port_num = port; + vendor = dd->ipath_vendorid; nip->vendor_id[0] = 0; nip->vendor_id[1] = vendor >> 8; nip->vendor_id[2] = vendor; @@ -128,15 +132,96 @@ static int recv_subn_get_guidinfo(struct ib_smp *smp, * We only support one GUID for now. If this changes, the * portinfo.guid_cap field needs to be updated too. */ - if (startgx == 0) - /* The first is a copy of the read-only HW GUID. */ - *p = ipath_layer_get_guid(to_idev(ibdev)->dd); - else + if (startgx == 0) { + __be64 g = to_idev(ibdev)->dd->ipath_guid; + if (g == 0) + /* GUID 0 is illegal */ + smp->status |= IB_SMP_INVALID_FIELD; + else + /* The first is a copy of the read-only HW GUID. */ + *p = g; + } else smp->status |= IB_SMP_INVALID_FIELD; return reply(smp); } + +static int get_overrunthreshold(struct ipath_devdata *dd) +{ + return (dd->ipath_ibcctrl >> + INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) & + INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK; +} + +/** + * set_overrunthreshold - set the overrun threshold + * @dd: the infinipath device + * @n: the new threshold + * + * Note that this will only take effect when the link state changes. + */ +static int set_overrunthreshold(struct ipath_devdata *dd, unsigned n) +{ + unsigned v; + + v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) & + INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK; + if (v != n) { + dd->ipath_ibcctrl &= + ~(INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK << + INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT); + dd->ipath_ibcctrl |= + (u64) n << INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT; + ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, + dd->ipath_ibcctrl); + } + return 0; +} + +static int get_phyerrthreshold(struct ipath_devdata *dd) +{ + return (dd->ipath_ibcctrl >> + INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & + INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; +} + +/** + * set_phyerrthreshold - set the physical error threshold + * @dd: the infinipath device + * @n: the new threshold + * + * Note that this will only take effect when the link state changes. + */ +static int set_phyerrthreshold(struct ipath_devdata *dd, unsigned n) +{ + unsigned v; + + v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & + INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; + if (v != n) { + dd->ipath_ibcctrl &= + ~(INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK << + INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT); + dd->ipath_ibcctrl |= + (u64) n << INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT; + ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, + dd->ipath_ibcctrl); + } + return 0; +} + +/** + * get_linkdowndefaultstate - get the default linkdown state + * @dd: the infinipath device + * + * Returns zero if the default is POLL, 1 if the default is SLEEP. + */ +static int get_linkdowndefaultstate(struct ipath_devdata *dd) +{ + return !!(dd->ipath_ibcctrl & INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE); +} + static int recv_subn_get_portinfo(struct ib_smp *smp, struct ib_device *ibdev, u8 port) { @@ -163,7 +248,7 @@ static int recv_subn_get_portinfo(struct ib_smp *smp, (dev->mkeyprot_resv_lmc >> 6) == 0) pip->mkey = dev->mkey; pip->gid_prefix = dev->gid_prefix; - lid = ipath_layer_get_lid(dev->dd); + lid = dev->dd->ipath_lid; pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE; pip->sm_lid = cpu_to_be16(dev->sm_lid); pip->cap_mask = cpu_to_be32(dev->port_cap_flags); @@ -174,14 +259,14 @@ static int recv_subn_get_portinfo(struct ib_smp *smp, pip->link_width_supported = 3; /* 1x or 4x */ pip->link_width_active = 2; /* 4x */ pip->linkspeed_portstate = 0x10; /* 2.5Gbps */ - ibcstat = ipath_layer_get_lastibcstat(dev->dd); + ibcstat = dev->dd->ipath_lastibcstat; pip->linkspeed_portstate |= ((ibcstat >> 4) & 0x3) + 1; pip->portphysstate_linkdown = (ipath_cvt_physportstate[ibcstat & 0xf] << 4) | - (ipath_layer_get_linkdowndefaultstate(dev->dd) ? 1 : 2); + (get_linkdowndefaultstate(dev->dd) ? 1 : 2); pip->mkeyprot_resv_lmc = dev->mkeyprot_resv_lmc; pip->linkspeedactive_enabled = 0x11; /* 2.5Gbps, 2.5Gbps */ - switch (ipath_layer_get_ibmtu(dev->dd)) { + switch (dev->dd->ipath_ibmtu) { case 4096: mtu = IB_MTU_4096; break; @@ -214,8 +299,8 @@ static int recv_subn_get_portinfo(struct ib_smp *smp, pip->mkey_violations = cpu_to_be16(dev->mkey_violations); /* P_KeyViolations are counted by hardware. */ pip->pkey_violations = - cpu_to_be16((ipath_layer_get_cr_errpkey(dev->dd) - - dev->n_pkey_violations) & 0xFFFF); + cpu_to_be16((ipath_get_cr_errpkey(dev->dd) - + dev->z_pkey_violations) & 0xFFFF); pip->qkey_violations = cpu_to_be16(dev->qkey_violations); /* Only the hardware GUID is supported for now */ pip->guid_cap = 1; @@ -223,8 +308,8 @@ static int recv_subn_get_portinfo(struct ib_smp *smp, /* 32.768 usec. response time (guessing) */ pip->resv_resptimevalue = 3; pip->localphyerrors_overrunerrors = - (ipath_layer_get_phyerrthreshold(dev->dd) << 4) | - ipath_layer_get_overrunthreshold(dev->dd); + (get_phyerrthreshold(dev->dd) << 4) | + get_overrunthreshold(dev->dd); /* pip->max_credit_hint; */ /* pip->link_roundtrip_latency[3]; */ @@ -234,6 +319,20 @@ bail: return ret; } +/** + * get_pkeys - return the PKEY table for port 0 + * @dd: the infinipath device + * @pkeys: the pkey table is placed here + */ +static int get_pkeys(struct ipath_devdata *dd, u16 * pkeys) +{ + struct ipath_portdata *pd = dd->ipath_pd[0]; + + memcpy(pkeys, pd->port_pkeys, sizeof(pd->port_pkeys)); + + return 0; +} + static int recv_subn_get_pkeytable(struct ib_smp *smp, struct ib_device *ibdev) { @@ -246,9 +345,9 @@ static int recv_subn_get_pkeytable(struct ib_smp *smp, memset(smp->data, 0, sizeof(smp->data)); if (startpx == 0) { struct ipath_ibdev *dev = to_idev(ibdev); - unsigned i, n = ipath_layer_get_npkeys(dev->dd); + unsigned i, n = ipath_get_npkeys(dev->dd); - ipath_layer_get_pkeys(dev->dd, p); + get_pkeys(dev->dd, p); for (i = 0; i < n; i++) q[i] = cpu_to_be16(p[i]); @@ -266,6 +365,24 @@ static int recv_subn_set_guidinfo(struct ib_smp *smp, } /** + * set_linkdowndefaultstate - set the default linkdown state + * @dd: the infinipath device + * @sleep: the new state + * + * Note that this will only take effect when the link state changes. + */ +static int set_linkdowndefaultstate(struct ipath_devdata *dd, int sleep) +{ + if (sleep) + dd->ipath_ibcctrl |= INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE; + else + dd->ipath_ibcctrl &= ~INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE; + ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, + dd->ipath_ibcctrl); + return 0; +} + +/** * recv_subn_set_portinfo - set port information * @smp: the incoming SM packet * @ibdev: the infiniband device @@ -287,7 +404,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp, u8 state; u16 lstate; u32 mtu; - int ret; + int ret, ore; if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt) goto err; @@ -301,11 +418,11 @@ static int recv_subn_set_portinfo(struct ib_smp *smp, dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period); lid = be16_to_cpu(pip->lid); - if (lid != ipath_layer_get_lid(dev->dd)) { + if (lid != dev->dd->ipath_lid) { /* Must be a valid unicast LID address. */ - if (lid == 0 || lid >= IPS_MULTICAST_LID_BASE) + if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) goto err; - ipath_set_sps_lid(dev->dd, lid, pip->mkeyprot_resv_lmc & 7); + ipath_set_lid(dev->dd, lid, pip->mkeyprot_resv_lmc & 7); event.event = IB_EVENT_LID_CHANGE; ib_dispatch_event(&event); } @@ -313,7 +430,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp, smlid = be16_to_cpu(pip->sm_lid); if (smlid != dev->sm_lid) { /* Must be a valid unicast LID address. */ - if (smlid == 0 || smlid >= IPS_MULTICAST_LID_BASE) + if (smlid == 0 || smlid >= IPATH_MULTICAST_LID_BASE) goto err; dev->sm_lid = smlid; event.event = IB_EVENT_SM_CHANGE; @@ -339,11 +456,11 @@ static int recv_subn_set_portinfo(struct ib_smp *smp, case 0: /* NOP */ break; case 1: /* SLEEP */ - if (ipath_layer_set_linkdowndefaultstate(dev->dd, 1)) + if (set_linkdowndefaultstate(dev->dd, 1)) goto err; break; case 2: /* POLL */ - if (ipath_layer_set_linkdowndefaultstate(dev->dd, 0)) + if (set_linkdowndefaultstate(dev->dd, 0)) goto err; break; default: @@ -373,7 +490,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp, /* XXX We have already partially updated our state! */ goto err; } - ipath_layer_set_mtu(dev->dd, mtu); + ipath_set_mtu(dev->dd, mtu); dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF; @@ -389,20 +506,16 @@ static int recv_subn_set_portinfo(struct ib_smp *smp, * later. */ if (pip->pkey_violations == 0) - dev->n_pkey_violations = - ipath_layer_get_cr_errpkey(dev->dd); + dev->z_pkey_violations = ipath_get_cr_errpkey(dev->dd); if (pip->qkey_violations == 0) dev->qkey_violations = 0; - if (ipath_layer_set_phyerrthreshold( - dev->dd, - (pip->localphyerrors_overrunerrors >> 4) & 0xF)) + ore = pip->localphyerrors_overrunerrors; + if (set_phyerrthreshold(dev->dd, (ore >> 4) & 0xF)) goto err; - if (ipath_layer_set_overrunthreshold( - dev->dd, - (pip->localphyerrors_overrunerrors & 0xF))) + if (set_overrunthreshold(dev->dd, (ore & 0xF))) goto err; dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F; @@ -420,7 +533,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp, * is down or is being set to down. */ state = pip->linkspeed_portstate & 0xF; - flags = ipath_layer_get_flags(dev->dd); + flags = dev->dd->ipath_flags; lstate = (pip->portphysstate_linkdown >> 4) & 0xF; if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP)) goto err; @@ -436,7 +549,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp, /* FALLTHROUGH */ case IB_PORT_DOWN: if (lstate == 0) - if (ipath_layer_get_linkdowndefaultstate(dev->dd)) + if (get_linkdowndefaultstate(dev->dd)) lstate = IPATH_IB_LINKDOWN_SLEEP; else lstate = IPATH_IB_LINKDOWN; @@ -448,7 +561,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp, lstate = IPATH_IB_LINKDOWN_DISABLE; else goto err; - ipath_layer_set_linkstate(dev->dd, lstate); + ipath_set_linkstate(dev->dd, lstate); if (flags & IPATH_LINKACTIVE) { event.event = IB_EVENT_PORT_ERR; ib_dispatch_event(&event); @@ -457,7 +570,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp, case IB_PORT_ARMED: if (!(flags & (IPATH_LINKINIT | IPATH_LINKACTIVE))) break; - ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKARM); + ipath_set_linkstate(dev->dd, IPATH_IB_LINKARM); if (flags & IPATH_LINKACTIVE) { event.event = IB_EVENT_PORT_ERR; ib_dispatch_event(&event); @@ -466,7 +579,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp, case IB_PORT_ACTIVE: if (!(flags & IPATH_LINKARMED)) break; - ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKACTIVE); + ipath_set_linkstate(dev->dd, IPATH_IB_LINKACTIVE); event.event = IB_EVENT_PORT_ACTIVE; ib_dispatch_event(&event); break; @@ -490,6 +603,152 @@ done: return ret; } +/** + * rm_pkey - decrecment the reference count for the given PKEY + * @dd: the infinipath device + * @key: the PKEY index + * + * Return true if this was the last reference and the hardware table entry + * needs to be changed. + */ +static int rm_pkey(struct ipath_devdata *dd, u16 key) +{ + int i; + int ret; + + for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { + if (dd->ipath_pkeys[i] != key) + continue; + if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) { + dd->ipath_pkeys[i] = 0; + ret = 1; + goto bail; + } + break; + } + + ret = 0; + +bail: + return ret; +} + +/** + * add_pkey - add the given PKEY to the hardware table + * @dd: the infinipath device + * @key: the PKEY + * + * Return an error code if unable to add the entry, zero if no change, + * or 1 if the hardware PKEY register needs to be updated. + */ +static int add_pkey(struct ipath_devdata *dd, u16 key) +{ + int i; + u16 lkey = key & 0x7FFF; + int any = 0; + int ret; + + if (lkey == 0x7FFF) { + ret = 0; + goto bail; + } + + /* Look for an empty slot or a matching PKEY. */ + for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { + if (!dd->ipath_pkeys[i]) { + any++; + continue; + } + /* If it matches exactly, try to increment the ref count */ + if (dd->ipath_pkeys[i] == key) { + if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) { + ret = 0; + goto bail; + } + /* Lost the race. Look for an empty slot below. */ + atomic_dec(&dd->ipath_pkeyrefs[i]); + any++; + } + /* + * It makes no sense to have both the limited and unlimited + * PKEY set at the same time since the unlimited one will + * disable the limited one. + */ + if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) { + ret = -EEXIST; + goto bail; + } + } + if (!any) { + ret = -EBUSY; + goto bail; + } + for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { + if (!dd->ipath_pkeys[i] && + atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) { + /* for ipathstats, etc. */ + ipath_stats.sps_pkeys[i] = lkey; + dd->ipath_pkeys[i] = key; + ret = 1; + goto bail; + } + } + ret = -EBUSY; + +bail: + return ret; +} + +/** + * set_pkeys - set the PKEY table for port 0 + * @dd: the infinipath device + * @pkeys: the PKEY table + */ +static int set_pkeys(struct ipath_devdata *dd, u16 *pkeys) +{ + struct ipath_portdata *pd; + int i; + int changed = 0; + + pd = dd->ipath_pd[0]; + + for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) { + u16 key = pkeys[i]; + u16 okey = pd->port_pkeys[i]; + + if (key == okey) + continue; + /* + * The value of this PKEY table entry is changing. + * Remove the old entry in the hardware's array of PKEYs. + */ + if (okey & 0x7FFF) + changed |= rm_pkey(dd, okey); + if (key & 0x7FFF) { + int ret = add_pkey(dd, key); + + if (ret < 0) + key = 0; + else + changed |= ret; + } + pd->port_pkeys[i] = key; + } + if (changed) { + u64 pkey; + + pkey = (u64) dd->ipath_pkeys[0] | + ((u64) dd->ipath_pkeys[1] << 16) | + ((u64) dd->ipath_pkeys[2] << 32) | + ((u64) dd->ipath_pkeys[3] << 48); + ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n", + (unsigned long long) pkey); + ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey, + pkey); + } + return 0; +} + static int recv_subn_set_pkeytable(struct ib_smp *smp, struct ib_device *ibdev) { @@ -497,13 +756,12 @@ static int recv_subn_set_pkeytable(struct ib_smp *smp, __be16 *p = (__be16 *) smp->data; u16 *q = (u16 *) smp->data; struct ipath_ibdev *dev = to_idev(ibdev); - unsigned i, n = ipath_layer_get_npkeys(dev->dd); + unsigned i, n = ipath_get_npkeys(dev->dd); for (i = 0; i < n; i++) q[i] = be16_to_cpu(p[i]); - if (startpx != 0 || - ipath_layer_set_pkeys(dev->dd, q) != 0) + if (startpx != 0 || set_pkeys(dev->dd, q) != 0) smp->status |= IB_SMP_INVALID_FIELD; return recv_subn_get_pkeytable(smp, ibdev); @@ -610,6 +868,9 @@ struct ib_pma_portcounters { #define IB_PMA_SEL_PORT_RCV_ERRORS __constant_htons(0x0008) #define IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS __constant_htons(0x0010) #define IB_PMA_SEL_PORT_XMIT_DISCARDS __constant_htons(0x0040) +#define IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS __constant_htons(0x0200) +#define IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS __constant_htons(0x0400) +#define IB_PMA_SEL_PORT_VL15_DROPPED __constant_htons(0x0800) #define IB_PMA_SEL_PORT_XMIT_DATA __constant_htons(0x1000) #define IB_PMA_SEL_PORT_RCV_DATA __constant_htons(0x2000) #define IB_PMA_SEL_PORT_XMIT_PACKETS __constant_htons(0x4000) @@ -838,24 +1099,28 @@ static int recv_pma_get_portcounters(struct ib_perf *pmp, struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) pmp->data; struct ipath_ibdev *dev = to_idev(ibdev); - struct ipath_layer_counters cntrs; + struct ipath_verbs_counters cntrs; u8 port_select = p->port_select; - ipath_layer_get_counters(dev->dd, &cntrs); + ipath_get_counters(dev->dd, &cntrs); /* Adjust counters for any resets done. */ - cntrs.symbol_error_counter -= dev->n_symbol_error_counter; + cntrs.symbol_error_counter -= dev->z_symbol_error_counter; cntrs.link_error_recovery_counter -= - dev->n_link_error_recovery_counter; - cntrs.link_downed_counter -= dev->n_link_downed_counter; + dev->z_link_error_recovery_counter; + cntrs.link_downed_counter -= dev->z_link_downed_counter; cntrs.port_rcv_errors += dev->rcv_errors; - cntrs.port_rcv_errors -= dev->n_port_rcv_errors; - cntrs.port_rcv_remphys_errors -= dev->n_port_rcv_remphys_errors; - cntrs.port_xmit_discards -= dev->n_port_xmit_discards; - cntrs.port_xmit_data -= dev->n_port_xmit_data; - cntrs.port_rcv_data -= dev->n_port_rcv_data; - cntrs.port_xmit_packets -= dev->n_port_xmit_packets; - cntrs.port_rcv_packets -= dev->n_port_rcv_packets; + cntrs.port_rcv_errors -= dev->z_port_rcv_errors; + cntrs.port_rcv_remphys_errors -= dev->z_port_rcv_remphys_errors; + cntrs.port_xmit_discards -= dev->z_port_xmit_discards; + cntrs.port_xmit_data -= dev->z_port_xmit_data; + cntrs.port_rcv_data -= dev->z_port_rcv_data; + cntrs.port_xmit_packets -= dev->z_port_xmit_packets; + cntrs.port_rcv_packets -= dev->z_port_rcv_packets; + cntrs.local_link_integrity_errors -= + dev->z_local_link_integrity_errors; + cntrs.excessive_buffer_overrun_errors -= + dev->z_excessive_buffer_overrun_errors; memset(pmp->data, 0, sizeof(pmp->data)); @@ -893,6 +1158,16 @@ static int recv_pma_get_portcounters(struct ib_perf *pmp, else p->port_xmit_discards = cpu_to_be16((u16)cntrs.port_xmit_discards); + if (cntrs.local_link_integrity_errors > 0xFUL) + cntrs.local_link_integrity_errors = 0xFUL; + if (cntrs.excessive_buffer_overrun_errors > 0xFUL) + cntrs.excessive_buffer_overrun_errors = 0xFUL; + p->lli_ebor_errors = (cntrs.local_link_integrity_errors << 4) | + cntrs.excessive_buffer_overrun_errors; + if (dev->n_vl15_dropped > 0xFFFFUL) + p->vl15_dropped = __constant_cpu_to_be16(0xFFFF); + else + p->vl15_dropped = cpu_to_be16((u16)dev->n_vl15_dropped); if (cntrs.port_xmit_data > 0xFFFFFFFFUL) p->port_xmit_data = __constant_cpu_to_be32(0xFFFFFFFF); else @@ -924,14 +1199,14 @@ static int recv_pma_get_portcounters_ext(struct ib_perf *pmp, u64 swords, rwords, spkts, rpkts, xwait; u8 port_select = p->port_select; - ipath_layer_snapshot_counters(dev->dd, &swords, &rwords, &spkts, - &rpkts, &xwait); + ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts, + &rpkts, &xwait); /* Adjust counters for any resets done. */ - swords -= dev->n_port_xmit_data; - rwords -= dev->n_port_rcv_data; - spkts -= dev->n_port_xmit_packets; - rpkts -= dev->n_port_rcv_packets; + swords -= dev->z_port_xmit_data; + rwords -= dev->z_port_rcv_data; + spkts -= dev->z_port_xmit_packets; + rpkts -= dev->z_port_rcv_packets; memset(pmp->data, 0, sizeof(pmp->data)); @@ -958,46 +1233,57 @@ static int recv_pma_set_portcounters(struct ib_perf *pmp, struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) pmp->data; struct ipath_ibdev *dev = to_idev(ibdev); - struct ipath_layer_counters cntrs; + struct ipath_verbs_counters cntrs; /* * Since the HW doesn't support clearing counters, we save the * current count and subtract it from future responses. */ - ipath_layer_get_counters(dev->dd, &cntrs); + ipath_get_counters(dev->dd, &cntrs); if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR) - dev->n_symbol_error_counter = cntrs.symbol_error_counter; + dev->z_symbol_error_counter = cntrs.symbol_error_counter; if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY) - dev->n_link_error_recovery_counter = + dev->z_link_error_recovery_counter = cntrs.link_error_recovery_counter; if (p->counter_select & IB_PMA_SEL_LINK_DOWNED) - dev->n_link_downed_counter = cntrs.link_downed_counter; + dev->z_link_downed_counter = cntrs.link_downed_counter; if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS) - dev->n_port_rcv_errors = + dev->z_port_rcv_errors = cntrs.port_rcv_errors + dev->rcv_errors; if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS) - dev->n_port_rcv_remphys_errors = + dev->z_port_rcv_remphys_errors = cntrs.port_rcv_remphys_errors; if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS) - dev->n_port_xmit_discards = cntrs.port_xmit_discards; + dev->z_port_xmit_discards = cntrs.port_xmit_discards; + + if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS) + dev->z_local_link_integrity_errors = + cntrs.local_link_integrity_errors; + + if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS) + dev->z_excessive_buffer_overrun_errors = + cntrs.excessive_buffer_overrun_errors; + + if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) + dev->n_vl15_dropped = 0; if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA) - dev->n_port_xmit_data = cntrs.port_xmit_data; + dev->z_port_xmit_data = cntrs.port_xmit_data; if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA) - dev->n_port_rcv_data = cntrs.port_rcv_data; + dev->z_port_rcv_data = cntrs.port_rcv_data; if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS) - dev->n_port_xmit_packets = cntrs.port_xmit_packets; + dev->z_port_xmit_packets = cntrs.port_xmit_packets; if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS) - dev->n_port_rcv_packets = cntrs.port_rcv_packets; + dev->z_port_rcv_packets = cntrs.port_rcv_packets; return recv_pma_get_portcounters(pmp, ibdev, port); } @@ -1010,20 +1296,20 @@ static int recv_pma_set_portcounters_ext(struct ib_perf *pmp, struct ipath_ibdev *dev = to_idev(ibdev); u64 swords, rwords, spkts, rpkts, xwait; - ipath_layer_snapshot_counters(dev->dd, &swords, &rwords, &spkts, - &rpkts, &xwait); + ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts, + &rpkts, &xwait); if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA) - dev->n_port_xmit_data = swords; + dev->z_port_xmit_data = swords; if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA) - dev->n_port_rcv_data = rwords; + dev->z_port_rcv_data = rwords; if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS) - dev->n_port_xmit_packets = spkts; + dev->z_port_xmit_packets = spkts; if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS) - dev->n_port_rcv_packets = rpkts; + dev->z_port_rcv_packets = rpkts; if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS) dev->n_unicast_xmit = 0; @@ -1272,32 +1558,8 @@ int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh, struct ib_mad *in_mad, struct ib_mad *out_mad) { - struct ipath_ibdev *dev = to_idev(ibdev); int ret; - /* - * Snapshot current HW counters to "clear" them. - * This should be done when the driver is loaded except that for - * some reason we get a zillion errors when brining up the link. - */ - if (dev->rcv_errors == 0) { - struct ipath_layer_counters cntrs; - - ipath_layer_get_counters(to_idev(ibdev)->dd, &cntrs); - dev->rcv_errors++; - dev->n_symbol_error_counter = cntrs.symbol_error_counter; - dev->n_link_error_recovery_counter = - cntrs.link_error_recovery_counter; - dev->n_link_downed_counter = cntrs.link_downed_counter; - dev->n_port_rcv_errors = cntrs.port_rcv_errors + 1; - dev->n_port_rcv_remphys_errors = - cntrs.port_rcv_remphys_errors; - dev->n_port_xmit_discards = cntrs.port_xmit_discards; - dev->n_port_xmit_data = cntrs.port_xmit_data; - dev->n_port_rcv_data = cntrs.port_rcv_data; - dev->n_port_xmit_packets = cntrs.port_xmit_packets; - dev->n_port_rcv_packets = cntrs.port_rcv_packets; - } switch (in_mad->mad_hdr.mgmt_class) { case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: case IB_MGMT_CLASS_SUBN_LID_ROUTED: diff --git a/drivers/infiniband/hw/ipath/ipath_mmap.c b/drivers/infiniband/hw/ipath/ipath_mmap.c new file mode 100644 index 000000000000..11b7378ff214 --- /dev/null +++ b/drivers/infiniband/hw/ipath/ipath_mmap.c @@ -0,0 +1,122 @@ +/* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/vmalloc.h> +#include <linux/mm.h> +#include <linux/errno.h> +#include <asm/pgtable.h> + +#include "ipath_verbs.h" + +/** + * ipath_release_mmap_info - free mmap info structure + * @ref: a pointer to the kref within struct ipath_mmap_info + */ +void ipath_release_mmap_info(struct kref *ref) +{ + struct ipath_mmap_info *ip = + container_of(ref, struct ipath_mmap_info, ref); + + vfree(ip->obj); + kfree(ip); +} + +/* + * open and close keep track of how many times the CQ is mapped, + * to avoid releasing it. + */ +static void ipath_vma_open(struct vm_area_struct *vma) +{ + struct ipath_mmap_info *ip = vma->vm_private_data; + + kref_get(&ip->ref); + ip->mmap_cnt++; +} + +static void ipath_vma_close(struct vm_area_struct *vma) +{ + struct ipath_mmap_info *ip = vma->vm_private_data; + + ip->mmap_cnt--; + kref_put(&ip->ref, ipath_release_mmap_info); +} + +static struct vm_operations_struct ipath_vm_ops = { + .open = ipath_vma_open, + .close = ipath_vma_close, +}; + +/** + * ipath_mmap - create a new mmap region + * @context: the IB user context of the process making the mmap() call + * @vma: the VMA to be initialized + * Return zero if the mmap is OK. Otherwise, return an errno. + */ +int ipath_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) +{ + struct ipath_ibdev *dev = to_idev(context->device); + unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; + unsigned long size = vma->vm_end - vma->vm_start; + struct ipath_mmap_info *ip, **pp; + int ret = -EINVAL; + + /* + * Search the device's list of objects waiting for a mmap call. + * Normally, this list is very short since a call to create a + * CQ, QP, or SRQ is soon followed by a call to mmap(). + */ + spin_lock_irq(&dev->pending_lock); + for (pp = &dev->pending_mmaps; (ip = *pp); pp = &ip->next) { + /* Only the creator is allowed to mmap the object */ + if (context != ip->context || (void *) offset != ip->obj) + continue; + /* Don't allow a mmap larger than the object. */ + if (size > ip->size) + break; + + *pp = ip->next; + spin_unlock_irq(&dev->pending_lock); + + ret = remap_vmalloc_range(vma, ip->obj, 0); + if (ret) + goto done; + vma->vm_ops = &ipath_vm_ops; + vma->vm_private_data = ip; + ipath_vma_open(vma); + goto done; + } + spin_unlock_irq(&dev->pending_lock); +done: + return ret; +} diff --git a/drivers/infiniband/hw/ipath/ipath_mr.c b/drivers/infiniband/hw/ipath/ipath_mr.c index 69ffec66d45d..a0673c1eef71 100644 --- a/drivers/infiniband/hw/ipath/ipath_mr.c +++ b/drivers/infiniband/hw/ipath/ipath_mr.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -35,6 +36,18 @@ #include "ipath_verbs.h" +/* Fast memory region */ +struct ipath_fmr { + struct ib_fmr ibfmr; + u8 page_shift; + struct ipath_mregion mr; /* must be last */ +}; + +static inline struct ipath_fmr *to_ifmr(struct ib_fmr *ibfmr) +{ + return container_of(ibfmr, struct ipath_fmr, ibfmr); +} + /** * ipath_get_dma_mr - get a DMA memory region * @pd: protection domain for this memory region @@ -125,6 +138,7 @@ struct ib_mr *ipath_reg_phys_mr(struct ib_pd *pd, goto bail; } + mr->mr.pd = pd; mr->mr.user_base = *iova_start; mr->mr.iova = *iova_start; mr->mr.length = 0; @@ -169,6 +183,11 @@ struct ib_mr *ipath_reg_user_mr(struct ib_pd *pd, struct ib_umem *region, int n, m, i; struct ib_mr *ret; + if (region->length == 0) { + ret = ERR_PTR(-EINVAL); + goto bail; + } + n = 0; list_for_each_entry(chunk, ®ion->chunk_list, list) n += chunk->nents; @@ -179,6 +198,7 @@ struct ib_mr *ipath_reg_user_mr(struct ib_pd *pd, struct ib_umem *region, goto bail; } + mr->mr.pd = pd; mr->mr.user_base = region->user_base; mr->mr.iova = region->virt_base; mr->mr.length = region->length; @@ -271,6 +291,7 @@ struct ib_fmr *ipath_alloc_fmr(struct ib_pd *pd, int mr_access_flags, * Resources are allocated but no valid mapping (RKEY can't be * used). */ + fmr->mr.pd = pd; fmr->mr.user_base = 0; fmr->mr.iova = 0; fmr->mr.length = 0; diff --git a/drivers/infiniband/hw/ipath/ipath_qp.c b/drivers/infiniband/hw/ipath/ipath_qp.c index 9f8855d970c8..46c1c89bf6ae 100644 --- a/drivers/infiniband/hw/ipath/ipath_qp.c +++ b/drivers/infiniband/hw/ipath/ipath_qp.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -34,7 +35,7 @@ #include <linux/vmalloc.h> #include "ipath_verbs.h" -#include "ips_common.h" +#include "ipath_kernel.h" #define BITS_PER_PAGE (PAGE_SIZE*BITS_PER_BYTE) #define BITS_PER_PAGE_MASK (BITS_PER_PAGE-1) @@ -43,19 +44,6 @@ #define find_next_offset(map, off) find_next_zero_bit((map)->page, \ BITS_PER_PAGE, off) -#define TRANS_INVALID 0 -#define TRANS_ANY2RST 1 -#define TRANS_RST2INIT 2 -#define TRANS_INIT2INIT 3 -#define TRANS_INIT2RTR 4 -#define TRANS_RTR2RTS 5 -#define TRANS_RTS2RTS 6 -#define TRANS_SQERR2RTS 7 -#define TRANS_ANY2ERR 8 -#define TRANS_RTS2SQD 9 /* XXX Wait for expected ACKs & signal event */ -#define TRANS_SQD2SQD 10 /* error if not drained & parameter change */ -#define TRANS_SQD2RTS 11 /* error if not drained */ - /* * Convert the AETH credit code into the number of credits. */ @@ -286,7 +274,7 @@ void ipath_free_all_qps(struct ipath_qp_table *qpt) free_qpn(qpt, qp->ibqp.qp_num); if (!atomic_dec_and_test(&qp->refcount) || !ipath_destroy_qp(&qp->ibqp)) - _VERBS_INFO("QP memory leak!\n"); + ipath_dbg(KERN_INFO "QP memory leak!\n"); qp = nqp; } } @@ -332,10 +320,11 @@ static void ipath_reset_qp(struct ipath_qp *qp) qp->remote_qpn = 0; qp->qkey = 0; qp->qp_access_flags = 0; + clear_bit(IPATH_S_BUSY, &qp->s_flags); qp->s_hdrwords = 0; qp->s_psn = 0; qp->r_psn = 0; - atomic_set(&qp->msn, 0); + qp->r_msn = 0; if (qp->ibqp.qp_type == IB_QPT_RC) { qp->s_state = IB_OPCODE_RC_SEND_LAST; qp->r_state = IB_OPCODE_RC_SEND_LAST; @@ -344,7 +333,9 @@ static void ipath_reset_qp(struct ipath_qp *qp) qp->r_state = IB_OPCODE_UC_SEND_LAST; } qp->s_ack_state = IB_OPCODE_RC_ACKNOWLEDGE; - qp->s_nak_state = 0; + qp->r_ack_state = IB_OPCODE_RC_ACKNOWLEDGE; + qp->r_nak_state = 0; + qp->r_wrid_valid = 0; qp->s_rnr_timeout = 0; qp->s_head = 0; qp->s_tail = 0; @@ -352,26 +343,30 @@ static void ipath_reset_qp(struct ipath_qp *qp) qp->s_last = 0; qp->s_ssn = 1; qp->s_lsn = 0; - qp->r_rq.head = 0; - qp->r_rq.tail = 0; + qp->s_wait_credit = 0; + if (qp->r_rq.wq) { + qp->r_rq.wq->head = 0; + qp->r_rq.wq->tail = 0; + } qp->r_reuse_sge = 0; } /** * ipath_error_qp - put a QP into an error state * @qp: the QP to put into an error state + * @err: the receive completion error to signal if a RWQE is active * * Flushes both send and receive work queues. - * QP r_rq.lock and s_lock should be held. + * QP s_lock should be held and interrupts disabled. */ -static void ipath_error_qp(struct ipath_qp *qp) +void ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err) { struct ipath_ibdev *dev = to_idev(qp->ibqp.device); struct ib_wc wc; - _VERBS_INFO("QP%d/%d in error state\n", - qp->ibqp.qp_num, qp->remote_qpn); + ipath_dbg(KERN_INFO "QP%d/%d in error state\n", + qp->ibqp.qp_num, qp->remote_qpn); spin_lock(&dev->pending_lock); /* XXX What if its already removed by the timeout code? */ @@ -381,7 +376,6 @@ static void ipath_error_qp(struct ipath_qp *qp) list_del_init(&qp->piowait); spin_unlock(&dev->pending_lock); - wc.status = IB_WC_WR_FLUSH_ERR; wc.vendor_err = 0; wc.byte_len = 0; wc.imm_data = 0; @@ -393,6 +387,12 @@ static void ipath_error_qp(struct ipath_qp *qp) wc.sl = 0; wc.dlid_path_bits = 0; wc.port_num = 0; + if (qp->r_wrid_valid) { + qp->r_wrid_valid = 0; + wc.status = err; + ipath_cq_enter(to_icq(qp->ibqp.send_cq), &wc, 1); + } + wc.status = IB_WC_WR_FLUSH_ERR; while (qp->s_last != qp->s_head) { struct ipath_swqe *wqe = get_swqe_ptr(qp, qp->s_last); @@ -407,12 +407,31 @@ static void ipath_error_qp(struct ipath_qp *qp) qp->s_hdrwords = 0; qp->s_ack_state = IB_OPCODE_RC_ACKNOWLEDGE; - wc.opcode = IB_WC_RECV; - while (qp->r_rq.tail != qp->r_rq.head) { - wc.wr_id = get_rwqe_ptr(&qp->r_rq, qp->r_rq.tail)->wr_id; - if (++qp->r_rq.tail >= qp->r_rq.size) - qp->r_rq.tail = 0; - ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, 1); + if (qp->r_rq.wq) { + struct ipath_rwq *wq; + u32 head; + u32 tail; + + spin_lock(&qp->r_rq.lock); + + /* sanity check pointers before trusting them */ + wq = qp->r_rq.wq; + head = wq->head; + if (head >= qp->r_rq.size) + head = 0; + tail = wq->tail; + if (tail >= qp->r_rq.size) + tail = 0; + wc.opcode = IB_WC_RECV; + while (tail != head) { + wc.wr_id = get_rwqe_ptr(&qp->r_rq, tail)->wr_id; + if (++tail >= qp->r_rq.size) + tail = 0; + ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, 1); + } + wq->tail = tail; + + spin_unlock(&qp->r_rq.lock); } } @@ -421,11 +440,12 @@ static void ipath_error_qp(struct ipath_qp *qp) * @ibqp: the queue pair who's attributes we're modifying * @attr: the new attributes * @attr_mask: the mask of attributes to modify + * @udata: user data for ipathverbs.so * * Returns 0 on success, otherwise returns an errno. */ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, - int attr_mask) + int attr_mask, struct ib_udata *udata) { struct ipath_ibdev *dev = to_idev(ibqp->device); struct ipath_qp *qp = to_iqp(ibqp); @@ -433,8 +453,7 @@ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, unsigned long flags; int ret; - spin_lock_irqsave(&qp->r_rq.lock, flags); - spin_lock(&qp->s_lock); + spin_lock_irqsave(&qp->s_lock, flags); cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state; @@ -444,26 +463,53 @@ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, attr_mask)) goto inval; - if (attr_mask & IB_QP_AV) + if (attr_mask & IB_QP_AV) { if (attr->ah_attr.dlid == 0 || - attr->ah_attr.dlid >= IPS_MULTICAST_LID_BASE) + attr->ah_attr.dlid >= IPATH_MULTICAST_LID_BASE) + goto inval; + + if ((attr->ah_attr.ah_flags & IB_AH_GRH) && + (attr->ah_attr.grh.sgid_index > 1)) goto inval; + } if (attr_mask & IB_QP_PKEY_INDEX) - if (attr->pkey_index >= ipath_layer_get_npkeys(dev->dd)) + if (attr->pkey_index >= ipath_get_npkeys(dev->dd)) goto inval; if (attr_mask & IB_QP_MIN_RNR_TIMER) if (attr->min_rnr_timer > 31) goto inval; + if (attr_mask & IB_QP_PORT) + if (attr->port_num == 0 || + attr->port_num > ibqp->device->phys_port_cnt) + goto inval; + + if (attr_mask & IB_QP_PATH_MTU) + if (attr->path_mtu > IB_MTU_4096) + goto inval; + + if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) + if (attr->max_dest_rd_atomic > 1) + goto inval; + + if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) + if (attr->max_rd_atomic > 1) + goto inval; + + if (attr_mask & IB_QP_PATH_MIG_STATE) + if (attr->path_mig_state != IB_MIG_MIGRATED && + attr->path_mig_state != IB_MIG_REARM) + goto inval; + switch (new_state) { case IB_QPS_RESET: ipath_reset_qp(qp); break; case IB_QPS_ERR: - ipath_error_qp(qp); + ipath_error_qp(qp, IB_WC_GENERAL_ERR); break; default: @@ -478,7 +524,7 @@ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, qp->remote_qpn = attr->dest_qp_num; if (attr_mask & IB_QP_SQ_PSN) { - qp->s_next_psn = attr->sq_psn; + qp->s_psn = qp->s_next_psn = attr->sq_psn; qp->s_last_psn = qp->s_next_psn - 1; } @@ -505,34 +551,22 @@ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, } if (attr_mask & IB_QP_MIN_RNR_TIMER) - qp->s_min_rnr_timer = attr->min_rnr_timer; + qp->r_min_rnr_timer = attr->min_rnr_timer; + + if (attr_mask & IB_QP_TIMEOUT) + qp->timeout = attr->timeout; if (attr_mask & IB_QP_QKEY) qp->qkey = attr->qkey; - if (attr_mask & IB_QP_PKEY_INDEX) - qp->s_pkey_index = attr->pkey_index; - qp->state = new_state; - spin_unlock(&qp->s_lock); - spin_unlock_irqrestore(&qp->r_rq.lock, flags); - - /* - * If QP1 changed to the RTS state, try to move to the link to INIT - * even if it was ACTIVE so the SM will reinitialize the SMA's - * state. - */ - if (qp->ibqp.qp_num == 1 && new_state == IB_QPS_RTS) { - struct ipath_ibdev *dev = to_idev(ibqp->device); + spin_unlock_irqrestore(&qp->s_lock, flags); - ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKDOWN); - } ret = 0; goto bail; inval: - spin_unlock(&qp->s_lock); - spin_unlock_irqrestore(&qp->r_rq.lock, flags); + spin_unlock_irqrestore(&qp->s_lock, flags); ret = -EINVAL; bail: @@ -554,7 +588,7 @@ int ipath_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, attr->dest_qp_num = qp->remote_qpn; attr->qp_access_flags = qp->qp_access_flags; attr->cap.max_send_wr = qp->s_size - 1; - attr->cap.max_recv_wr = qp->r_rq.size - 1; + attr->cap.max_recv_wr = qp->ibqp.srq ? 0 : qp->r_rq.size - 1; attr->cap.max_send_sge = qp->s_max_sge; attr->cap.max_recv_sge = qp->r_rq.max_sge; attr->cap.max_inline_data = 0; @@ -566,9 +600,9 @@ int ipath_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, attr->sq_draining = 0; attr->max_rd_atomic = 1; attr->max_dest_rd_atomic = 1; - attr->min_rnr_timer = qp->s_min_rnr_timer; + attr->min_rnr_timer = qp->r_min_rnr_timer; attr->port_num = 1; - attr->timeout = 0; + attr->timeout = qp->timeout; attr->retry_cnt = qp->s_retry_cnt; attr->rnr_retry = qp->s_rnr_retry; attr->alt_port_num = 0; @@ -580,9 +614,10 @@ int ipath_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, init_attr->recv_cq = qp->ibqp.recv_cq; init_attr->srq = qp->ibqp.srq; init_attr->cap = attr->cap; - init_attr->sq_sig_type = - (qp->s_flags & (1 << IPATH_S_SIGNAL_REQ_WR)) - ? IB_SIGNAL_REQ_WR : 0; + if (qp->s_flags & (1 << IPATH_S_SIGNAL_REQ_WR)) + init_attr->sq_sig_type = IB_SIGNAL_REQ_WR; + else + init_attr->sq_sig_type = IB_SIGNAL_ALL_WR; init_attr->qp_type = qp->ibqp.qp_type; init_attr->port_num = 1; return 0; @@ -593,31 +628,37 @@ int ipath_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, * @qp: the queue pair to compute the AETH for * * Returns the AETH. - * - * The QP s_lock should be held. */ __be32 ipath_compute_aeth(struct ipath_qp *qp) { - u32 aeth = atomic_read(&qp->msn) & IPS_MSN_MASK; + u32 aeth = qp->r_msn & IPATH_MSN_MASK; - if (qp->s_nak_state) { - aeth |= qp->s_nak_state << IPS_AETH_CREDIT_SHIFT; - } else if (qp->ibqp.srq) { + if (qp->ibqp.srq) { /* * Shared receive queues don't generate credits. * Set the credit field to the invalid value. */ - aeth |= IPS_AETH_CREDIT_INVAL << IPS_AETH_CREDIT_SHIFT; + aeth |= IPATH_AETH_CREDIT_INVAL << IPATH_AETH_CREDIT_SHIFT; } else { u32 min, max, x; u32 credits; - + struct ipath_rwq *wq = qp->r_rq.wq; + u32 head; + u32 tail; + + /* sanity check pointers before trusting them */ + head = wq->head; + if (head >= qp->r_rq.size) + head = 0; + tail = wq->tail; + if (tail >= qp->r_rq.size) + tail = 0; /* * Compute the number of credits available (RWQEs). * XXX Not holding the r_rq.lock here so there is a small * chance that the pair of reads are not atomic. */ - credits = qp->r_rq.head - qp->r_rq.tail; + credits = head - tail; if ((int)credits < 0) credits += qp->r_rq.size; /* @@ -637,7 +678,7 @@ __be32 ipath_compute_aeth(struct ipath_qp *qp) else min = x; } - aeth |= x << IPS_AETH_CREDIT_SHIFT; + aeth |= x << IPATH_AETH_CREDIT_SHIFT; } return cpu_to_be32(aeth); } @@ -663,12 +704,22 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, size_t sz; struct ib_qp *ret; - if (init_attr->cap.max_send_sge > 255 || - init_attr->cap.max_recv_sge > 255) { + if (init_attr->cap.max_send_sge > ib_ipath_max_sges || + init_attr->cap.max_recv_sge > ib_ipath_max_sges || + init_attr->cap.max_send_wr > ib_ipath_max_qp_wrs || + init_attr->cap.max_recv_wr > ib_ipath_max_qp_wrs) { ret = ERR_PTR(-ENOMEM); goto bail; } + if (init_attr->cap.max_send_sge + + init_attr->cap.max_recv_sge + + init_attr->cap.max_send_wr + + init_attr->cap.max_recv_wr == 0) { + ret = ERR_PTR(-EINVAL); + goto bail; + } + switch (init_attr->qp_type) { case IB_QPT_UC: case IB_QPT_RC: @@ -684,20 +735,38 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, case IB_QPT_UD: case IB_QPT_SMI: case IB_QPT_GSI: - qp = kmalloc(sizeof(*qp), GFP_KERNEL); + sz = sizeof(*qp); + if (init_attr->srq) { + struct ipath_srq *srq = to_isrq(init_attr->srq); + + sz += sizeof(*qp->r_sg_list) * + srq->rq.max_sge; + } else + sz += sizeof(*qp->r_sg_list) * + init_attr->cap.max_recv_sge; + qp = kmalloc(sz, GFP_KERNEL); if (!qp) { ret = ERR_PTR(-ENOMEM); - goto bail; + goto bail_swq; } - qp->r_rq.size = init_attr->cap.max_recv_wr + 1; - sz = sizeof(struct ipath_sge) * - init_attr->cap.max_recv_sge + - sizeof(struct ipath_rwqe); - qp->r_rq.wq = vmalloc(qp->r_rq.size * sz); - if (!qp->r_rq.wq) { - kfree(qp); - ret = ERR_PTR(-ENOMEM); - goto bail; + if (init_attr->srq) { + sz = 0; + qp->r_rq.size = 0; + qp->r_rq.max_sge = 0; + qp->r_rq.wq = NULL; + init_attr->cap.max_recv_wr = 0; + init_attr->cap.max_recv_sge = 0; + } else { + qp->r_rq.size = init_attr->cap.max_recv_wr + 1; + qp->r_rq.max_sge = init_attr->cap.max_recv_sge; + sz = (sizeof(struct ib_sge) * qp->r_rq.max_sge) + + sizeof(struct ipath_rwqe); + qp->r_rq.wq = vmalloc_user(sizeof(struct ipath_rwq) + + qp->r_rq.size * sz); + if (!qp->r_rq.wq) { + ret = ERR_PTR(-ENOMEM); + goto bail_qp; + } } /* @@ -708,9 +777,7 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, spin_lock_init(&qp->r_rq.lock); atomic_set(&qp->refcount, 0); init_waitqueue_head(&qp->wait); - tasklet_init(&qp->s_task, - init_attr->qp_type == IB_QPT_RC ? - ipath_do_rc_send : ipath_do_uc_send, + tasklet_init(&qp->s_task, ipath_do_ruc_send, (unsigned long)qp); INIT_LIST_HEAD(&qp->piowait); INIT_LIST_HEAD(&qp->timerwait); @@ -718,25 +785,19 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, qp->s_wq = swq; qp->s_size = init_attr->cap.max_send_wr + 1; qp->s_max_sge = init_attr->cap.max_send_sge; - qp->r_rq.max_sge = init_attr->cap.max_recv_sge; - qp->s_flags = init_attr->sq_sig_type == IB_SIGNAL_REQ_WR ? - 1 << IPATH_S_SIGNAL_REQ_WR : 0; + if (init_attr->sq_sig_type == IB_SIGNAL_REQ_WR) + qp->s_flags = 1 << IPATH_S_SIGNAL_REQ_WR; + else + qp->s_flags = 0; dev = to_idev(ibpd->device); err = ipath_alloc_qpn(&dev->qp_table, qp, init_attr->qp_type); if (err) { - vfree(swq); - vfree(qp->r_rq.wq); - kfree(qp); ret = ERR_PTR(err); - goto bail; + goto bail_rwq; } + qp->ip = NULL; ipath_reset_qp(qp); - - /* Tell the core driver that the kernel SMA is present. */ - if (init_attr->qp_type == IB_QPT_SMI) - ipath_layer_set_verbs_flags(dev->dd, - IPATH_VERBS_KERNEL_SMA); break; default: @@ -747,8 +808,63 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, init_attr->cap.max_inline_data = 0; + /* + * Return the address of the RWQ as the offset to mmap. + * See ipath_mmap() for details. + */ + if (udata && udata->outlen >= sizeof(__u64)) { + struct ipath_mmap_info *ip; + __u64 offset = (__u64) qp->r_rq.wq; + int err; + + err = ib_copy_to_udata(udata, &offset, sizeof(offset)); + if (err) { + ret = ERR_PTR(err); + goto bail_rwq; + } + + if (qp->r_rq.wq) { + /* Allocate info for ipath_mmap(). */ + ip = kmalloc(sizeof(*ip), GFP_KERNEL); + if (!ip) { + ret = ERR_PTR(-ENOMEM); + goto bail_rwq; + } + qp->ip = ip; + ip->context = ibpd->uobject->context; + ip->obj = qp->r_rq.wq; + kref_init(&ip->ref); + ip->mmap_cnt = 0; + ip->size = PAGE_ALIGN(sizeof(struct ipath_rwq) + + qp->r_rq.size * sz); + spin_lock_irq(&dev->pending_lock); + ip->next = dev->pending_mmaps; + dev->pending_mmaps = ip; + spin_unlock_irq(&dev->pending_lock); + } + } + + spin_lock(&dev->n_qps_lock); + if (dev->n_qps_allocated == ib_ipath_max_qps) { + spin_unlock(&dev->n_qps_lock); + ret = ERR_PTR(-ENOMEM); + goto bail_ip; + } + + dev->n_qps_allocated++; + spin_unlock(&dev->n_qps_lock); + ret = &qp->ibqp; + goto bail; +bail_ip: + kfree(qp->ip); +bail_rwq: + vfree(qp->r_rq.wq); +bail_qp: + kfree(qp); +bail_swq: + vfree(swq); bail: return ret; } @@ -768,15 +884,12 @@ int ipath_destroy_qp(struct ib_qp *ibqp) struct ipath_ibdev *dev = to_idev(ibqp->device); unsigned long flags; - /* Tell the core driver that the kernel SMA is gone. */ - if (qp->ibqp.qp_type == IB_QPT_SMI) - ipath_layer_set_verbs_flags(dev->dd, 0); - - spin_lock_irqsave(&qp->r_rq.lock, flags); - spin_lock(&qp->s_lock); + spin_lock_irqsave(&qp->s_lock, flags); qp->state = IB_QPS_ERR; - spin_unlock(&qp->s_lock); - spin_unlock_irqrestore(&qp->r_rq.lock, flags); + spin_unlock_irqrestore(&qp->s_lock, flags); + spin_lock(&dev->n_qps_lock); + dev->n_qps_allocated--; + spin_unlock(&dev->n_qps_lock); /* Stop the sending tasklet. */ tasklet_kill(&qp->s_task); @@ -797,8 +910,11 @@ int ipath_destroy_qp(struct ib_qp *ibqp) if (atomic_read(&qp->refcount) != 0) ipath_free_qp(&dev->qp_table, qp); + if (qp->ip) + kref_put(&qp->ip->ref, ipath_release_mmap_info); + else + vfree(qp->r_rq.wq); vfree(qp->s_wq); - vfree(qp->r_rq.wq); kfree(qp); return 0; } @@ -850,8 +966,8 @@ void ipath_sqerror_qp(struct ipath_qp *qp, struct ib_wc *wc) struct ipath_ibdev *dev = to_idev(qp->ibqp.device); struct ipath_swqe *wqe = get_swqe_ptr(qp, qp->s_last); - _VERBS_INFO("Send queue error on QP%d/%d: err: %d\n", - qp->ibqp.qp_num, qp->remote_qpn, wc->status); + ipath_dbg(KERN_INFO "Send queue error on QP%d/%d: err: %d\n", + qp->ibqp.qp_num, qp->remote_qpn, wc->status); spin_lock(&dev->pending_lock); /* XXX What if its already removed by the timeout code? */ @@ -888,18 +1004,18 @@ void ipath_sqerror_qp(struct ipath_qp *qp, struct ib_wc *wc) */ void ipath_get_credit(struct ipath_qp *qp, u32 aeth) { - u32 credit = (aeth >> IPS_AETH_CREDIT_SHIFT) & IPS_AETH_CREDIT_MASK; + u32 credit = (aeth >> IPATH_AETH_CREDIT_SHIFT) & IPATH_AETH_CREDIT_MASK; /* * If the credit is invalid, we can send * as many packets as we like. Otherwise, we have to * honor the credit field. */ - if (credit == IPS_AETH_CREDIT_INVAL) { + if (credit == IPATH_AETH_CREDIT_INVAL) qp->s_lsn = (u32) -1; - } else if (qp->s_lsn != (u32) -1) { + else if (qp->s_lsn != (u32) -1) { /* Compute new LSN (i.e., MSN + credit) */ - credit = (aeth + credit_table[credit]) & IPS_MSN_MASK; + credit = (aeth + credit_table[credit]) & IPATH_MSN_MASK; if (ipath_cmp24(credit, qp->s_lsn) > 0) qp->s_lsn = credit; } diff --git a/drivers/infiniband/hw/ipath/ipath_rc.c b/drivers/infiniband/hw/ipath/ipath_rc.c index 493b1821a934..a504cf67f272 100644 --- a/drivers/infiniband/hw/ipath/ipath_rc.c +++ b/drivers/infiniband/hw/ipath/ipath_rc.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -31,7 +32,7 @@ */ #include "ipath_verbs.h" -#include "ips_common.h" +#include "ipath_kernel.h" /* cut down ridiculously long IB macro names */ #define OP(x) IB_OPCODE_RC_##x @@ -41,14 +42,14 @@ * @qp: the QP who's SGE we're restarting * @wqe: the work queue to initialize the QP's SGE from * - * The QP s_lock should be held. + * The QP s_lock should be held and interrupts disabled. */ static void ipath_init_restart(struct ipath_qp *qp, struct ipath_swqe *wqe) { struct ipath_ibdev *dev; u32 len; - len = ((qp->s_psn - wqe->psn) & IPS_PSN_MASK) * + len = ((qp->s_psn - wqe->psn) & IPATH_PSN_MASK) * ib_mtu_enum_to_int(qp->path_mtu); qp->s_sge.sge = wqe->sg_list[0]; qp->s_sge.sg_list = wqe->sg_list + 1; @@ -72,11 +73,10 @@ static void ipath_init_restart(struct ipath_qp *qp, struct ipath_swqe *wqe) * Return bth0 if constructed; otherwise, return 0. * Note the QP s_lock must be held. */ -static inline u32 ipath_make_rc_ack(struct ipath_qp *qp, - struct ipath_other_headers *ohdr, - u32 pmtu) +u32 ipath_make_rc_ack(struct ipath_qp *qp, + struct ipath_other_headers *ohdr, + u32 pmtu) { - struct ipath_sge_state *ss; u32 hwords; u32 len; u32 bth0; @@ -90,13 +90,12 @@ static inline u32 ipath_make_rc_ack(struct ipath_qp *qp, */ switch (qp->s_ack_state) { case OP(RDMA_READ_REQUEST): - ss = &qp->s_rdma_sge; + qp->s_cur_sge = &qp->s_rdma_sge; len = qp->s_rdma_len; if (len > pmtu) { len = pmtu; qp->s_ack_state = OP(RDMA_READ_RESPONSE_FIRST); - } - else + } else qp->s_ack_state = OP(RDMA_READ_RESPONSE_ONLY); qp->s_rdma_len -= len; bth0 = qp->s_ack_state << 24; @@ -108,7 +107,7 @@ static inline u32 ipath_make_rc_ack(struct ipath_qp *qp, qp->s_ack_state = OP(RDMA_READ_RESPONSE_MIDDLE); /* FALLTHROUGH */ case OP(RDMA_READ_RESPONSE_MIDDLE): - ss = &qp->s_rdma_sge; + qp->s_cur_sge = &qp->s_rdma_sge; len = qp->s_rdma_len; if (len > pmtu) len = pmtu; @@ -127,41 +126,50 @@ static inline u32 ipath_make_rc_ack(struct ipath_qp *qp, * We have to prevent new requests from changing * the r_sge state while a ipath_verbs_send() * is in progress. - * Changing r_state allows the receiver - * to continue processing new packets. - * We do it here now instead of above so - * that we are sure the packet was sent before - * changing the state. */ - qp->r_state = OP(RDMA_READ_RESPONSE_LAST); qp->s_ack_state = OP(ACKNOWLEDGE); - return 0; + bth0 = 0; + goto bail; case OP(COMPARE_SWAP): case OP(FETCH_ADD): - ss = NULL; + qp->s_cur_sge = NULL; len = 0; - qp->r_state = OP(SEND_LAST); - qp->s_ack_state = OP(ACKNOWLEDGE); - bth0 = IB_OPCODE_ATOMIC_ACKNOWLEDGE << 24; + /* + * Set the s_ack_state so the receive interrupt handler + * won't try to send an ACK (out of order) until this one + * is actually sent. + */ + qp->s_ack_state = OP(RDMA_READ_RESPONSE_LAST); + bth0 = OP(ATOMIC_ACKNOWLEDGE) << 24; ohdr->u.at.aeth = ipath_compute_aeth(qp); - ohdr->u.at.atomic_ack_eth = cpu_to_be64(qp->s_ack_atomic); + ohdr->u.at.atomic_ack_eth = cpu_to_be64(qp->r_atomic_data); hwords += sizeof(ohdr->u.at) / 4; break; default: /* Send a regular ACK. */ - ss = NULL; + qp->s_cur_sge = NULL; len = 0; - qp->s_ack_state = OP(ACKNOWLEDGE); - bth0 = qp->s_ack_state << 24; - ohdr->u.aeth = ipath_compute_aeth(qp); + /* + * Set the s_ack_state so the receive interrupt handler + * won't try to send an ACK (out of order) until this one + * is actually sent. + */ + qp->s_ack_state = OP(RDMA_READ_RESPONSE_LAST); + bth0 = OP(ACKNOWLEDGE) << 24; + if (qp->s_nak_state) + ohdr->u.aeth = cpu_to_be32((qp->r_msn & IPATH_MSN_MASK) | + (qp->s_nak_state << + IPATH_AETH_CREDIT_SHIFT)); + else + ohdr->u.aeth = ipath_compute_aeth(qp); hwords++; } qp->s_hdrwords = hwords; - qp->s_cur_sge = ss; qp->s_cur_size = len; +bail: return bth0; } @@ -174,11 +182,11 @@ static inline u32 ipath_make_rc_ack(struct ipath_qp *qp, * @bth2p: pointer to the BTH PSN word * * Return 1 if constructed; otherwise, return 0. - * Note the QP s_lock must be held. + * Note the QP s_lock must be held and interrupts disabled. */ -static inline int ipath_make_rc_req(struct ipath_qp *qp, - struct ipath_other_headers *ohdr, - u32 pmtu, u32 *bth0p, u32 *bth2p) +int ipath_make_rc_req(struct ipath_qp *qp, + struct ipath_other_headers *ohdr, + u32 pmtu, u32 *bth0p, u32 *bth2p) { struct ipath_ibdev *dev = to_idev(qp->ibqp.device); struct ipath_sge_state *ss; @@ -193,6 +201,18 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, qp->s_rnr_timeout) goto done; + /* Limit the number of packets sent without an ACK. */ + if (ipath_cmp24(qp->s_psn, qp->s_last_psn + IPATH_PSN_CREDIT) > 0) { + qp->s_wait_credit = 1; + dev->n_rc_stalls++; + spin_lock(&dev->pending_lock); + if (list_empty(&qp->timerwait)) + list_add_tail(&qp->timerwait, + &dev->pending[dev->pending_index]); + spin_unlock(&dev->pending_lock); + goto done; + } + /* header size in 32-bit words LRH+BTH = (8+12)/4. */ hwords = 5; bth0 = 0; @@ -213,7 +233,7 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, /* Check if send work queue is empty. */ if (qp->s_tail == qp->s_head) goto done; - qp->s_psn = wqe->psn = qp->s_next_psn; + wqe->psn = qp->s_next_psn; newreq = 1; } /* @@ -257,7 +277,7 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, break; case IB_WR_RDMA_WRITE: - if (newreq) + if (newreq && qp->s_lsn != (u32) -1) qp->s_lsn++; /* FALLTHROUGH */ case IB_WR_RDMA_WRITE_WITH_IMM: @@ -283,8 +303,7 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, else { qp->s_state = OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE); - /* Immediate data comes - * after RETH */ + /* Immediate data comes after RETH */ ohdr->u.rc.imm_data = wqe->wr.imm_data; hwords += 1; if (wqe->wr.send_flags & IB_SEND_SOLICITED) @@ -304,7 +323,8 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, qp->s_state = OP(RDMA_READ_REQUEST); hwords += sizeof(ohdr->u.rc.reth) / 4; if (newreq) { - qp->s_lsn++; + if (qp->s_lsn != (u32) -1) + qp->s_lsn++; /* * Adjust s_next_psn to count the * expected number of responses. @@ -335,7 +355,8 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, wqe->wr.wr.atomic.compare_add); hwords += sizeof(struct ib_atomic_eth) / 4; if (newreq) { - qp->s_lsn++; + if (qp->s_lsn != (u32) -1) + qp->s_lsn++; wqe->lpsn = wqe->psn; } if (++qp->s_cur == qp->s_size) @@ -352,9 +373,14 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, if (qp->s_tail >= qp->s_size) qp->s_tail = 0; } - bth2 |= qp->s_psn++ & IPS_PSN_MASK; + bth2 |= qp->s_psn++ & IPATH_PSN_MASK; if ((int)(qp->s_psn - qp->s_next_psn) > 0) qp->s_next_psn = qp->s_psn; + /* + * Put the QP on the pending list so lost ACKs will cause + * a retry. More than one request can be pending so the + * QP may already be on the dev->pending list. + */ spin_lock(&dev->pending_lock); if (list_empty(&qp->timerwait)) list_add_tail(&qp->timerwait, @@ -364,8 +390,8 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, case OP(RDMA_READ_RESPONSE_FIRST): /* - * This case can only happen if a send is restarted. See - * ipath_restart_rc(). + * This case can only happen if a send is restarted. + * See ipath_restart_rc(). */ ipath_init_restart(qp, wqe); /* FALLTHROUGH */ @@ -373,18 +399,12 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, qp->s_state = OP(SEND_MIDDLE); /* FALLTHROUGH */ case OP(SEND_MIDDLE): - bth2 = qp->s_psn++ & IPS_PSN_MASK; + bth2 = qp->s_psn++ & IPATH_PSN_MASK; if ((int)(qp->s_psn - qp->s_next_psn) > 0) qp->s_next_psn = qp->s_psn; ss = &qp->s_sge; len = qp->s_len; if (len > pmtu) { - /* - * Request an ACK every 1/2 MB to avoid retransmit - * timeouts. - */ - if (((wqe->length - len) % (512 * 1024)) == 0) - bth2 |= 1 << 31; len = pmtu; break; } @@ -415,18 +435,12 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, qp->s_state = OP(RDMA_WRITE_MIDDLE); /* FALLTHROUGH */ case OP(RDMA_WRITE_MIDDLE): - bth2 = qp->s_psn++ & IPS_PSN_MASK; + bth2 = qp->s_psn++ & IPATH_PSN_MASK; if ((int)(qp->s_psn - qp->s_next_psn) > 0) qp->s_next_psn = qp->s_psn; ss = &qp->s_sge; len = qp->s_len; if (len > pmtu) { - /* - * Request an ACK every 1/2 MB to avoid retransmit - * timeouts. - */ - if (((wqe->length - len) % (512 * 1024)) == 0) - bth2 |= 1 << 31; len = pmtu; break; } @@ -452,7 +466,7 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, * See ipath_restart_rc(). */ ipath_init_restart(qp, wqe); - len = ((qp->s_psn - wqe->psn) & IPS_PSN_MASK) * pmtu; + len = ((qp->s_psn - wqe->psn) & IPATH_PSN_MASK) * pmtu; ohdr->u.rc.reth.vaddr = cpu_to_be64(wqe->wr.wr.rdma.remote_addr + len); ohdr->u.rc.reth.rkey = @@ -460,7 +474,7 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, ohdr->u.rc.reth.length = cpu_to_be32(qp->s_len); qp->s_state = OP(RDMA_READ_REQUEST); hwords += sizeof(ohdr->u.rc.reth) / 4; - bth2 = qp->s_psn++ & IPS_PSN_MASK; + bth2 = qp->s_psn++ & IPATH_PSN_MASK; if ((int)(qp->s_psn - qp->s_next_psn) > 0) qp->s_next_psn = qp->s_psn; ss = NULL; @@ -484,6 +498,8 @@ static inline int ipath_make_rc_req(struct ipath_qp *qp, */ goto done; } + if (ipath_cmp24(qp->s_psn, qp->s_last_psn + IPATH_PSN_CREDIT - 1) >= 0) + bth2 |= 1 << 31; /* Request ACK. */ qp->s_len -= len; qp->s_hdrwords = hwords; qp->s_cur_sge = ss; @@ -496,189 +512,169 @@ done: return 0; } -static inline void ipath_make_rc_grh(struct ipath_qp *qp, - struct ib_global_route *grh, - u32 nwords) -{ - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - - /* GRH header size in 32-bit words. */ - qp->s_hdrwords += 10; - qp->s_hdr.u.l.grh.version_tclass_flow = - cpu_to_be32((6 << 28) | - (grh->traffic_class << 20) | - grh->flow_label); - qp->s_hdr.u.l.grh.paylen = - cpu_to_be16(((qp->s_hdrwords - 12) + nwords + - SIZE_OF_CRC) << 2); - /* next_hdr is defined by C8-7 in ch. 8.4.1 */ - qp->s_hdr.u.l.grh.next_hdr = 0x1B; - qp->s_hdr.u.l.grh.hop_limit = grh->hop_limit; - /* The SGID is 32-bit aligned. */ - qp->s_hdr.u.l.grh.sgid.global.subnet_prefix = dev->gid_prefix; - qp->s_hdr.u.l.grh.sgid.global.interface_id = - ipath_layer_get_guid(dev->dd); - qp->s_hdr.u.l.grh.dgid = grh->dgid; -} - /** - * ipath_do_rc_send - perform a send on an RC QP - * @data: contains a pointer to the QP + * send_rc_ack - Construct an ACK packet and send it + * @qp: a pointer to the QP * - * Process entries in the send work queue until credit or queue is - * exhausted. Only allow one CPU to send a packet per QP (tasklet). - * Otherwise, after we drop the QP s_lock, two threads could send - * packets out of order. + * This is called from ipath_rc_rcv() and only uses the receive + * side QP state. + * Note that RDMA reads are handled in the send side QP state and tasklet. */ -void ipath_do_rc_send(unsigned long data) +static void send_rc_ack(struct ipath_qp *qp) { - struct ipath_qp *qp = (struct ipath_qp *)data; struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - unsigned long flags; u16 lrh0; - u32 nwords; - u32 extra_bytes; u32 bth0; - u32 bth2; - u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu); + u32 hwords; + struct ipath_ib_header hdr; struct ipath_other_headers *ohdr; - if (test_and_set_bit(IPATH_S_BUSY, &qp->s_flags)) - goto bail; - - if (unlikely(qp->remote_ah_attr.dlid == - ipath_layer_get_lid(dev->dd))) { - struct ib_wc wc; - - /* - * Pass in an uninitialized ib_wc to be consistent with - * other places where ipath_ruc_loopback() is called. - */ - ipath_ruc_loopback(qp, &wc); - goto clear; - } - - ohdr = &qp->s_hdr.u.oth; - if (qp->remote_ah_attr.ah_flags & IB_AH_GRH) - ohdr = &qp->s_hdr.u.l.oth; - -again: - /* Check for a constructed packet to be sent. */ - if (qp->s_hdrwords != 0) { - /* - * If no PIO bufs are available, return. An interrupt will - * call ipath_ib_piobufavail() when one is available. - */ - _VERBS_INFO("h %u %p\n", qp->s_hdrwords, &qp->s_hdr); - _VERBS_INFO("d %u %p %u %p %u %u %u %u\n", qp->s_cur_size, - qp->s_cur_sge->sg_list, - qp->s_cur_sge->num_sge, - qp->s_cur_sge->sge.vaddr, - qp->s_cur_sge->sge.sge_length, - qp->s_cur_sge->sge.length, - qp->s_cur_sge->sge.m, - qp->s_cur_sge->sge.n); - if (ipath_verbs_send(dev->dd, qp->s_hdrwords, - (u32 *) &qp->s_hdr, qp->s_cur_size, - qp->s_cur_sge)) { - ipath_no_bufs_available(qp, dev); - goto bail; - } - dev->n_unicast_xmit++; - /* Record that we sent the packet and s_hdr is empty. */ - qp->s_hdrwords = 0; - } - - /* - * The lock is needed to synchronize between setting - * qp->s_ack_state, resend timer, and post_send(). - */ - spin_lock_irqsave(&qp->s_lock, flags); - - /* Sending responses has higher priority over sending requests. */ - if (qp->s_ack_state != OP(ACKNOWLEDGE) && - (bth0 = ipath_make_rc_ack(qp, ohdr, pmtu)) != 0) - bth2 = qp->s_ack_psn++ & IPS_PSN_MASK; - else if (!ipath_make_rc_req(qp, ohdr, pmtu, &bth0, &bth2)) - goto done; - - spin_unlock_irqrestore(&qp->s_lock, flags); - /* Construct the header. */ - extra_bytes = (4 - qp->s_cur_size) & 3; - nwords = (qp->s_cur_size + extra_bytes) >> 2; - lrh0 = IPS_LRH_BTH; + ohdr = &hdr.u.oth; + lrh0 = IPATH_LRH_BTH; + /* header size in 32-bit words LRH+BTH+AETH = (8+12+4)/4. */ + hwords = 6; if (unlikely(qp->remote_ah_attr.ah_flags & IB_AH_GRH)) { - ipath_make_rc_grh(qp, &qp->remote_ah_attr.grh, nwords); - lrh0 = IPS_LRH_GRH; + hwords += ipath_make_grh(dev, &hdr.u.l.grh, + &qp->remote_ah_attr.grh, + hwords, 0); + ohdr = &hdr.u.l.oth; + lrh0 = IPATH_LRH_GRH; } + /* read pkey_index w/o lock (its atomic) */ + bth0 = ipath_get_pkey(dev->dd, qp->s_pkey_index); + if (qp->r_nak_state) + ohdr->u.aeth = cpu_to_be32((qp->r_msn & IPATH_MSN_MASK) | + (qp->r_nak_state << + IPATH_AETH_CREDIT_SHIFT)); + else + ohdr->u.aeth = ipath_compute_aeth(qp); + if (qp->r_ack_state >= OP(COMPARE_SWAP)) { + bth0 |= OP(ATOMIC_ACKNOWLEDGE) << 24; + ohdr->u.at.atomic_ack_eth = cpu_to_be64(qp->r_atomic_data); + hwords += sizeof(ohdr->u.at.atomic_ack_eth) / 4; + } else + bth0 |= OP(ACKNOWLEDGE) << 24; lrh0 |= qp->remote_ah_attr.sl << 4; - qp->s_hdr.lrh[0] = cpu_to_be16(lrh0); - qp->s_hdr.lrh[1] = cpu_to_be16(qp->remote_ah_attr.dlid); - qp->s_hdr.lrh[2] = cpu_to_be16(qp->s_hdrwords + nwords + - SIZE_OF_CRC); - qp->s_hdr.lrh[3] = cpu_to_be16(ipath_layer_get_lid(dev->dd)); - bth0 |= ipath_layer_get_pkey(dev->dd, qp->s_pkey_index); - bth0 |= extra_bytes << 20; + hdr.lrh[0] = cpu_to_be16(lrh0); + hdr.lrh[1] = cpu_to_be16(qp->remote_ah_attr.dlid); + hdr.lrh[2] = cpu_to_be16(hwords + SIZE_OF_CRC); + hdr.lrh[3] = cpu_to_be16(dev->dd->ipath_lid); ohdr->bth[0] = cpu_to_be32(bth0); ohdr->bth[1] = cpu_to_be32(qp->remote_qpn); - ohdr->bth[2] = cpu_to_be32(bth2); + ohdr->bth[2] = cpu_to_be32(qp->r_ack_psn & IPATH_PSN_MASK); - /* Check for more work to do. */ - goto again; + /* + * If we can send the ACK, clear the ACK state. + */ + if (ipath_verbs_send(dev->dd, hwords, (u32 *) &hdr, 0, NULL) == 0) { + qp->r_ack_state = OP(ACKNOWLEDGE); + dev->n_unicast_xmit++; + } else { + /* + * We are out of PIO buffers at the moment. + * Pass responsibility for sending the ACK to the + * send tasklet so that when a PIO buffer becomes + * available, the ACK is sent ahead of other outgoing + * packets. + */ + dev->n_rc_qacks++; + spin_lock_irq(&qp->s_lock); + /* Don't coalesce if a RDMA read or atomic is pending. */ + if (qp->s_ack_state == OP(ACKNOWLEDGE) || + qp->s_ack_state < OP(RDMA_READ_REQUEST)) { + qp->s_ack_state = qp->r_ack_state; + qp->s_nak_state = qp->r_nak_state; + qp->s_ack_psn = qp->r_ack_psn; + qp->r_ack_state = OP(ACKNOWLEDGE); + } + spin_unlock_irq(&qp->s_lock); -done: - spin_unlock_irqrestore(&qp->s_lock, flags); -clear: - clear_bit(IPATH_S_BUSY, &qp->s_flags); -bail: - return; + /* Call ipath_do_rc_send() in another thread. */ + tasklet_hi_schedule(&qp->s_task); + } } -static void send_rc_ack(struct ipath_qp *qp) +/** + * reset_psn - reset the QP state to send starting from PSN + * @qp: the QP + * @psn: the packet sequence number to restart at + * + * This is called from ipath_rc_rcv() to process an incoming RC ACK + * for the given QP. + * Called at interrupt level with the QP s_lock held. + */ +static void reset_psn(struct ipath_qp *qp, u32 psn) { - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - u16 lrh0; - u32 bth0; - struct ipath_other_headers *ohdr; + u32 n = qp->s_last; + struct ipath_swqe *wqe = get_swqe_ptr(qp, n); + u32 opcode; - /* Construct the header. */ - ohdr = &qp->s_hdr.u.oth; - lrh0 = IPS_LRH_BTH; - /* header size in 32-bit words LRH+BTH+AETH = (8+12+4)/4. */ - qp->s_hdrwords = 6; - if (unlikely(qp->remote_ah_attr.ah_flags & IB_AH_GRH)) { - ipath_make_rc_grh(qp, &qp->remote_ah_attr.grh, 0); - ohdr = &qp->s_hdr.u.l.oth; - lrh0 = IPS_LRH_GRH; + qp->s_cur = n; + + /* + * If we are starting the request from the beginning, + * let the normal send code handle initialization. + */ + if (ipath_cmp24(psn, wqe->psn) <= 0) { + qp->s_state = OP(SEND_LAST); + goto done; } - bth0 = ipath_layer_get_pkey(dev->dd, qp->s_pkey_index); - ohdr->u.aeth = ipath_compute_aeth(qp); - if (qp->s_ack_state >= OP(COMPARE_SWAP)) { - bth0 |= IB_OPCODE_ATOMIC_ACKNOWLEDGE << 24; - ohdr->u.at.atomic_ack_eth = cpu_to_be64(qp->s_ack_atomic); - qp->s_hdrwords += sizeof(ohdr->u.at.atomic_ack_eth) / 4; + + /* Find the work request opcode corresponding to the given PSN. */ + opcode = wqe->wr.opcode; + for (;;) { + int diff; + + if (++n == qp->s_size) + n = 0; + if (n == qp->s_tail) + break; + wqe = get_swqe_ptr(qp, n); + diff = ipath_cmp24(psn, wqe->psn); + if (diff < 0) + break; + qp->s_cur = n; + /* + * If we are starting the request from the beginning, + * let the normal send code handle initialization. + */ + if (diff == 0) { + qp->s_state = OP(SEND_LAST); + goto done; + } + opcode = wqe->wr.opcode; } - else - bth0 |= OP(ACKNOWLEDGE) << 24; - lrh0 |= qp->remote_ah_attr.sl << 4; - qp->s_hdr.lrh[0] = cpu_to_be16(lrh0); - qp->s_hdr.lrh[1] = cpu_to_be16(qp->remote_ah_attr.dlid); - qp->s_hdr.lrh[2] = cpu_to_be16(qp->s_hdrwords + SIZE_OF_CRC); - qp->s_hdr.lrh[3] = cpu_to_be16(ipath_layer_get_lid(dev->dd)); - ohdr->bth[0] = cpu_to_be32(bth0); - ohdr->bth[1] = cpu_to_be32(qp->remote_qpn); - ohdr->bth[2] = cpu_to_be32(qp->s_ack_psn & IPS_PSN_MASK); /* - * If we can send the ACK, clear the ACK state. + * Set the state to restart in the middle of a request. + * Don't change the s_sge, s_cur_sge, or s_cur_size. + * See ipath_do_rc_send(). */ - if (ipath_verbs_send(dev->dd, qp->s_hdrwords, (u32 *) &qp->s_hdr, - 0, NULL) == 0) { - qp->s_ack_state = OP(ACKNOWLEDGE); - dev->n_rc_qacks++; - dev->n_unicast_xmit++; + switch (opcode) { + case IB_WR_SEND: + case IB_WR_SEND_WITH_IMM: + qp->s_state = OP(RDMA_READ_RESPONSE_FIRST); + break; + + case IB_WR_RDMA_WRITE: + case IB_WR_RDMA_WRITE_WITH_IMM: + qp->s_state = OP(RDMA_READ_RESPONSE_LAST); + break; + + case IB_WR_RDMA_READ: + qp->s_state = OP(RDMA_READ_RESPONSE_MIDDLE); + break; + + default: + /* + * This case shouldn't happen since its only + * one PSN per req. + */ + qp->s_state = OP(SEND_LAST); } +done: + qp->s_psn = psn; } /** @@ -687,13 +683,12 @@ static void send_rc_ack(struct ipath_qp *qp) * @psn: packet sequence number for the request * @wc: the work completion request * - * The QP s_lock should be held. + * The QP s_lock should be held and interrupts disabled. */ void ipath_restart_rc(struct ipath_qp *qp, u32 psn, struct ib_wc *wc) { struct ipath_swqe *wqe = get_swqe_ptr(qp, qp->s_last); struct ipath_ibdev *dev; - u32 n; /* * If there are no requests pending, we are done. @@ -735,62 +730,7 @@ void ipath_restart_rc(struct ipath_qp *qp, u32 psn, struct ib_wc *wc) else dev->n_rc_resends += (int)qp->s_psn - (int)psn; - /* - * If we are starting the request from the beginning, let the normal - * send code handle initialization. - */ - qp->s_cur = qp->s_last; - if (ipath_cmp24(psn, wqe->psn) <= 0) { - qp->s_state = OP(SEND_LAST); - qp->s_psn = wqe->psn; - } else { - n = qp->s_cur; - for (;;) { - if (++n == qp->s_size) - n = 0; - if (n == qp->s_tail) { - if (ipath_cmp24(psn, qp->s_next_psn) >= 0) { - qp->s_cur = n; - wqe = get_swqe_ptr(qp, n); - } - break; - } - wqe = get_swqe_ptr(qp, n); - if (ipath_cmp24(psn, wqe->psn) < 0) - break; - qp->s_cur = n; - } - qp->s_psn = psn; - - /* - * Reset the state to restart in the middle of a request. - * Don't change the s_sge, s_cur_sge, or s_cur_size. - * See ipath_do_rc_send(). - */ - switch (wqe->wr.opcode) { - case IB_WR_SEND: - case IB_WR_SEND_WITH_IMM: - qp->s_state = OP(RDMA_READ_RESPONSE_FIRST); - break; - - case IB_WR_RDMA_WRITE: - case IB_WR_RDMA_WRITE_WITH_IMM: - qp->s_state = OP(RDMA_READ_RESPONSE_LAST); - break; - - case IB_WR_RDMA_READ: - qp->s_state = - OP(RDMA_READ_RESPONSE_MIDDLE); - break; - - default: - /* - * This case shouldn't happen since its only - * one PSN per req. - */ - qp->s_state = OP(SEND_LAST); - } - } + reset_psn(qp, psn); done: tasklet_hi_schedule(&qp->s_task); @@ -799,66 +739,13 @@ bail: return; } -/** - * reset_psn - reset the QP state to send starting from PSN - * @qp: the QP - * @psn: the packet sequence number to restart at - * - * This is called from ipath_rc_rcv() to process an incoming RC ACK - * for the given QP. - * Called at interrupt level with the QP s_lock held. - */ -static void reset_psn(struct ipath_qp *qp, u32 psn) +static inline void update_last_psn(struct ipath_qp *qp, u32 psn) { - struct ipath_swqe *wqe; - u32 n; - - n = qp->s_cur; - wqe = get_swqe_ptr(qp, n); - for (;;) { - if (++n == qp->s_size) - n = 0; - if (n == qp->s_tail) { - if (ipath_cmp24(psn, qp->s_next_psn) >= 0) { - qp->s_cur = n; - wqe = get_swqe_ptr(qp, n); - } - break; - } - wqe = get_swqe_ptr(qp, n); - if (ipath_cmp24(psn, wqe->psn) < 0) - break; - qp->s_cur = n; - } - qp->s_psn = psn; - - /* - * Set the state to restart in the middle of a - * request. Don't change the s_sge, s_cur_sge, or - * s_cur_size. See ipath_do_rc_send(). - */ - switch (wqe->wr.opcode) { - case IB_WR_SEND: - case IB_WR_SEND_WITH_IMM: - qp->s_state = OP(RDMA_READ_RESPONSE_FIRST); - break; - - case IB_WR_RDMA_WRITE: - case IB_WR_RDMA_WRITE_WITH_IMM: - qp->s_state = OP(RDMA_READ_RESPONSE_LAST); - break; - - case IB_WR_RDMA_READ: - qp->s_state = OP(RDMA_READ_RESPONSE_MIDDLE); - break; - - default: - /* - * This case shouldn't happen since its only - * one PSN per req. - */ - qp->s_state = OP(SEND_LAST); + if (qp->s_wait_credit) { + qp->s_wait_credit = 0; + tasklet_hi_schedule(&qp->s_task); } + qp->s_last_psn = psn; } /** @@ -867,9 +754,9 @@ static void reset_psn(struct ipath_qp *qp, u32 psn) * @psn: the packet sequence number of the ACK * @opcode: the opcode of the request that resulted in the ACK * - * This is called from ipath_rc_rcv() to process an incoming RC ACK + * This is called from ipath_rc_rcv_resp() to process an incoming RC ACK * for the given QP. - * Called at interrupt level with the QP s_lock held. + * Called at interrupt level with the QP s_lock held and interrupts disabled. * Returns 1 if OK, 0 if current operation should be aborted (NAK). */ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode) @@ -929,7 +816,7 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode) * The last valid PSN seen is the previous * request's. */ - qp->s_last_psn = wqe->psn - 1; + update_last_psn(qp, wqe->psn - 1); /* Retry this request. */ ipath_restart_rc(qp, wqe->psn, &wc); /* @@ -988,7 +875,7 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode) ipath_get_credit(qp, aeth); qp->s_rnr_retry = qp->s_rnr_retry_cnt; qp->s_retry = qp->s_retry_cnt; - qp->s_last_psn = psn; + update_last_psn(qp, psn); ret = 1; goto bail; @@ -1006,35 +893,25 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode) if (qp->s_last == qp->s_tail) goto bail; - /* The last valid PSN seen is the previous request's. */ - qp->s_last_psn = wqe->psn - 1; + /* The last valid PSN is the previous PSN. */ + update_last_psn(qp, psn - 1); dev->n_rc_resends += (int)qp->s_psn - (int)psn; - /* - * If we are starting the request from the beginning, let - * the normal send code handle initialization. - */ - qp->s_cur = qp->s_last; - wqe = get_swqe_ptr(qp, qp->s_cur); - if (ipath_cmp24(psn, wqe->psn) <= 0) { - qp->s_state = OP(SEND_LAST); - qp->s_psn = wqe->psn; - } else - reset_psn(qp, psn); + reset_psn(qp, psn); qp->s_rnr_timeout = - ib_ipath_rnr_table[(aeth >> IPS_AETH_CREDIT_SHIFT) & - IPS_AETH_CREDIT_MASK]; + ib_ipath_rnr_table[(aeth >> IPATH_AETH_CREDIT_SHIFT) & + IPATH_AETH_CREDIT_MASK]; ipath_insert_rnr_queue(qp); goto bail; case 3: /* NAK */ /* The last valid PSN seen is the previous request's. */ if (qp->s_last != qp->s_tail) - qp->s_last_psn = wqe->psn - 1; - switch ((aeth >> IPS_AETH_CREDIT_SHIFT) & - IPS_AETH_CREDIT_MASK) { + update_last_psn(qp, wqe->psn - 1); + switch ((aeth >> IPATH_AETH_CREDIT_SHIFT) & + IPATH_AETH_CREDIT_MASK) { case 0: /* PSN sequence error */ dev->n_seq_naks++; /* @@ -1182,32 +1059,33 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev, goto ack_done; } rdma_read: - if (unlikely(qp->s_state != OP(RDMA_READ_REQUEST))) - goto ack_done; - if (unlikely(tlen != (hdrsize + pmtu + 4))) - goto ack_done; - if (unlikely(pmtu >= qp->s_len)) - goto ack_done; - /* We got a response so update the timeout. */ - if (unlikely(qp->s_last == qp->s_tail || - get_swqe_ptr(qp, qp->s_last)->wr.opcode != - IB_WR_RDMA_READ)) - goto ack_done; - spin_lock(&dev->pending_lock); - if (qp->s_rnr_timeout == 0 && !list_empty(&qp->timerwait)) - list_move_tail(&qp->timerwait, - &dev->pending[dev->pending_index]); - spin_unlock(&dev->pending_lock); - /* - * Update the RDMA receive state but do the copy w/o holding the - * locks and blocking interrupts. XXX Yet another place that - * affects relaxed RDMA order since we don't want s_sge modified. - */ - qp->s_len -= pmtu; - qp->s_last_psn = psn; - spin_unlock_irqrestore(&qp->s_lock, flags); - ipath_copy_sge(&qp->s_sge, data, pmtu); - goto bail; + if (unlikely(qp->s_state != OP(RDMA_READ_REQUEST))) + goto ack_done; + if (unlikely(tlen != (hdrsize + pmtu + 4))) + goto ack_done; + if (unlikely(pmtu >= qp->s_len)) + goto ack_done; + /* We got a response so update the timeout. */ + if (unlikely(qp->s_last == qp->s_tail || + get_swqe_ptr(qp, qp->s_last)->wr.opcode != + IB_WR_RDMA_READ)) + goto ack_done; + spin_lock(&dev->pending_lock); + if (qp->s_rnr_timeout == 0 && !list_empty(&qp->timerwait)) + list_move_tail(&qp->timerwait, + &dev->pending[dev->pending_index]); + spin_unlock(&dev->pending_lock); + /* + * Update the RDMA receive state but do the copy w/o + * holding the locks and blocking interrupts. + * XXX Yet another place that affects relaxed RDMA order + * since we don't want s_sge modified. + */ + qp->s_len -= pmtu; + update_last_psn(qp, psn); + spin_unlock_irqrestore(&qp->s_lock, flags); + ipath_copy_sge(&qp->s_sge, data, pmtu); + goto bail; case OP(RDMA_READ_RESPONSE_LAST): /* ACKs READ req. */ @@ -1230,18 +1108,12 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev, * ICRC (4). */ if (unlikely(tlen <= (hdrsize + pad + 8))) { - /* - * XXX Need to generate an error CQ - * entry. - */ + /* XXX Need to generate an error CQ entry. */ goto ack_done; } tlen -= hdrsize + pad + 8; if (unlikely(tlen != qp->s_len)) { - /* - * XXX Need to generate an error CQ - * entry. - */ + /* XXX Need to generate an error CQ entry. */ goto ack_done; } if (!header_in_data) @@ -1254,9 +1126,12 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev, if (do_rc_ack(qp, aeth, psn, OP(RDMA_READ_RESPONSE_LAST))) { /* * Change the state so we contimue - * processing new requests. + * processing new requests and wake up the + * tasklet if there are posted sends. */ qp->s_state = OP(SEND_LAST); + if (qp->s_tail != qp->s_head) + tasklet_hi_schedule(&qp->s_task); } goto ack_done; } @@ -1302,18 +1177,16 @@ static inline int ipath_rc_rcv_error(struct ipath_ibdev *dev, * Don't queue the NAK if a RDMA read, atomic, or * NAK is pending though. */ - spin_lock(&qp->s_lock); - if ((qp->s_ack_state >= OP(RDMA_READ_REQUEST) && - qp->s_ack_state != IB_OPCODE_ACKNOWLEDGE) || - qp->s_nak_state != 0) { - spin_unlock(&qp->s_lock); + if (qp->s_ack_state != OP(ACKNOWLEDGE) || + qp->r_nak_state != 0) goto done; + if (qp->r_ack_state < OP(COMPARE_SWAP)) { + qp->r_ack_state = OP(SEND_ONLY); + qp->r_nak_state = IB_NAK_PSN_ERROR; + /* Use the expected PSN. */ + qp->r_ack_psn = qp->r_psn; } - qp->s_ack_state = OP(SEND_ONLY); - qp->s_nak_state = IB_NAK_PSN_ERROR; - /* Use the expected PSN. */ - qp->s_ack_psn = qp->r_psn; - goto resched; + goto send_ack; } /* @@ -1327,27 +1200,7 @@ static inline int ipath_rc_rcv_error(struct ipath_ibdev *dev, * send the earliest so that RDMA reads can be restarted at * the requester's expected PSN. */ - spin_lock(&qp->s_lock); - if (qp->s_ack_state != IB_OPCODE_ACKNOWLEDGE && - ipath_cmp24(psn, qp->s_ack_psn) >= 0) { - if (qp->s_ack_state < IB_OPCODE_RDMA_READ_REQUEST) - qp->s_ack_psn = psn; - spin_unlock(&qp->s_lock); - goto done; - } - switch (opcode) { - case OP(RDMA_READ_REQUEST): - /* - * We have to be careful to not change s_rdma_sge - * while ipath_do_rc_send() is using it and not - * holding the s_lock. - */ - if (qp->s_ack_state != OP(ACKNOWLEDGE) && - qp->s_ack_state >= IB_OPCODE_RDMA_READ_REQUEST) { - spin_unlock(&qp->s_lock); - dev->n_rdma_dup_busy++; - goto done; - } + if (opcode == OP(RDMA_READ_REQUEST)) { /* RETH comes after BTH */ if (!header_in_data) reth = &ohdr->u.rc.reth; @@ -1355,6 +1208,22 @@ static inline int ipath_rc_rcv_error(struct ipath_ibdev *dev, reth = (struct ib_reth *)data; data += sizeof(*reth); } + /* + * If we receive a duplicate RDMA request, it means the + * requester saw a sequence error and needs to restart + * from an earlier point. We can abort the current + * RDMA read send in that case. + */ + spin_lock_irq(&qp->s_lock); + if (qp->s_ack_state != OP(ACKNOWLEDGE) && + (qp->s_hdrwords || ipath_cmp24(psn, qp->s_ack_psn) >= 0)) { + /* + * We are already sending earlier requested data. + * Don't abort it to send later out of sequence data. + */ + spin_unlock_irq(&qp->s_lock); + goto done; + } qp->s_rdma_len = be32_to_cpu(reth->length); if (qp->s_rdma_len != 0) { u32 rkey = be32_to_cpu(reth->rkey); @@ -1365,11 +1234,13 @@ static inline int ipath_rc_rcv_error(struct ipath_ibdev *dev, * Address range must be a subset of the original * request and start on pmtu boundaries. */ - ok = ipath_rkey_ok(dev, &qp->s_rdma_sge, + ok = ipath_rkey_ok(qp, &qp->s_rdma_sge, qp->s_rdma_len, vaddr, rkey, IB_ACCESS_REMOTE_READ); - if (unlikely(!ok)) + if (unlikely(!ok)) { + spin_unlock_irq(&qp->s_lock); goto done; + } } else { qp->s_rdma_sge.sg_list = NULL; qp->s_rdma_sge.num_sge = 0; @@ -1378,31 +1249,58 @@ static inline int ipath_rc_rcv_error(struct ipath_ibdev *dev, qp->s_rdma_sge.sge.length = 0; qp->s_rdma_sge.sge.sge_length = 0; } - break; + qp->s_ack_state = opcode; + qp->s_ack_psn = psn; + spin_unlock_irq(&qp->s_lock); + tasklet_hi_schedule(&qp->s_task); + goto send_ack; + } + + /* + * A pending RDMA read will ACK anything before it so + * ignore earlier duplicate requests. + */ + if (qp->s_ack_state != OP(ACKNOWLEDGE)) + goto done; + /* + * If an ACK is pending, don't replace the pending ACK + * with an earlier one since the later one will ACK the earlier. + * Also, if we already have a pending atomic, send it. + */ + if (qp->r_ack_state != OP(ACKNOWLEDGE) && + (ipath_cmp24(psn, qp->r_ack_psn) <= 0 || + qp->r_ack_state >= OP(COMPARE_SWAP))) + goto send_ack; + switch (opcode) { case OP(COMPARE_SWAP): case OP(FETCH_ADD): /* - * Check for the PSN of the last atomic operations + * Check for the PSN of the last atomic operation * performed and resend the result if found. */ - if ((psn & IPS_PSN_MASK) != qp->r_atomic_psn) { - spin_unlock(&qp->s_lock); + if ((psn & IPATH_PSN_MASK) != qp->r_atomic_psn) goto done; - } - qp->s_ack_atomic = qp->r_atomic_data; break; } - qp->s_ack_state = opcode; - qp->s_nak_state = 0; - qp->s_ack_psn = psn; -resched: + qp->r_ack_state = opcode; + qp->r_nak_state = 0; + qp->r_ack_psn = psn; +send_ack: return 0; done: return 1; } +static void ipath_rc_error(struct ipath_qp *qp, enum ib_wc_status err) +{ + spin_lock_irq(&qp->s_lock); + qp->state = IB_QPS_ERR; + ipath_error_qp(qp, err); + spin_unlock_irq(&qp->s_lock); +} + /** * ipath_rc_rcv - process an incoming RC packet * @dev: the device this packet came in on @@ -1424,13 +1322,16 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, u32 hdrsize; u32 psn; u32 pad; - unsigned long flags; struct ib_wc wc; u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu); int diff; struct ib_reth *reth; int header_in_data; + /* Validate the SLID. See Ch. 9.6.1.5 */ + if (unlikely(be16_to_cpu(hdr->lrh[3]) != qp->remote_ah_attr.dlid)) + goto done; + /* Check for GRH */ if (!has_grh) { ohdr = &hdr->u.oth; @@ -1445,19 +1346,13 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, * the eager header buffer size to 56 bytes so the last 4 * bytes of the BTH header (PSN) is in the data buffer. */ - header_in_data = - ipath_layer_get_rcvhdrentsize(dev->dd) == 16; + header_in_data = dev->dd->ipath_rcvhdrentsize == 16; if (header_in_data) { psn = be32_to_cpu(((__be32 *) data)[0]); data += sizeof(__be32); } else psn = be32_to_cpu(ohdr->bth[2]); } - /* - * The opcode is in the low byte when its in network order - * (top byte when in host order). - */ - opcode = be32_to_cpu(ohdr->bth[0]) >> 24; /* * Process responses (ACKs) before anything else. Note that the @@ -1465,22 +1360,21 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, * queue rather than the expected receive packet sequence number. * In other words, this QP is the requester. */ + opcode = be32_to_cpu(ohdr->bth[0]) >> 24; if (opcode >= OP(RDMA_READ_RESPONSE_FIRST) && opcode <= OP(ATOMIC_ACKNOWLEDGE)) { ipath_rc_rcv_resp(dev, ohdr, data, tlen, qp, opcode, psn, hdrsize, pmtu, header_in_data); - goto bail; + goto done; } - spin_lock_irqsave(&qp->r_rq.lock, flags); - /* Compute 24 bits worth of difference. */ diff = ipath_cmp24(psn, qp->r_psn); if (unlikely(diff)) { if (ipath_rc_rcv_error(dev, ohdr, data, qp, opcode, psn, diff, header_in_data)) goto done; - goto resched; + goto send_ack; } /* Check for opcode sequence errors. */ @@ -1492,22 +1386,18 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, opcode == OP(SEND_LAST_WITH_IMMEDIATE)) break; nack_inv: - /* - * A NAK will ACK earlier sends and RDMA writes. Don't queue the - * NAK if a RDMA read, atomic, or NAK is pending though. - */ - spin_lock(&qp->s_lock); - if (qp->s_ack_state >= OP(RDMA_READ_REQUEST) && - qp->s_ack_state != IB_OPCODE_ACKNOWLEDGE) { - spin_unlock(&qp->s_lock); - goto done; - } - /* XXX Flush WQEs */ - qp->state = IB_QPS_ERR; - qp->s_ack_state = OP(SEND_ONLY); - qp->s_nak_state = IB_NAK_INVALID_REQUEST; - qp->s_ack_psn = qp->r_psn; - goto resched; + /* + * A NAK will ACK earlier sends and RDMA writes. + * Don't queue the NAK if a RDMA read, atomic, or NAK + * is pending though. + */ + if (qp->r_ack_state >= OP(COMPARE_SWAP)) + goto send_ack; + ipath_rc_error(qp, IB_WC_REM_INV_REQ_ERR); + qp->r_ack_state = OP(SEND_ONLY); + qp->r_nak_state = IB_NAK_INVALID_REQUEST; + qp->r_ack_psn = qp->r_psn; + goto send_ack; case OP(RDMA_WRITE_FIRST): case OP(RDMA_WRITE_MIDDLE): @@ -1517,20 +1407,6 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, break; goto nack_inv; - case OP(RDMA_READ_REQUEST): - case OP(COMPARE_SWAP): - case OP(FETCH_ADD): - /* - * Drop all new requests until a response has been sent. A - * new request then ACKs the RDMA response we sent. Relaxed - * ordering would allow new requests to be processed but we - * would need to keep a queue of rwqe's for all that are in - * progress. Note that we can't RNR NAK this request since - * the RDMA READ or atomic response is already queued to be - * sent (unless we implement a response send queue). - */ - goto done; - default: if (opcode == OP(SEND_MIDDLE) || opcode == OP(SEND_LAST) || @@ -1539,6 +1415,11 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, opcode == OP(RDMA_WRITE_LAST) || opcode == OP(RDMA_WRITE_LAST_WITH_IMMEDIATE)) goto nack_inv; + /* + * Note that it is up to the requester to not send a new + * RDMA read or atomic operation before receiving an ACK + * for the previous operation. + */ break; } @@ -1555,17 +1436,12 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, * Don't queue the NAK if a RDMA read or atomic * is pending though. */ - spin_lock(&qp->s_lock); - if (qp->s_ack_state >= - OP(RDMA_READ_REQUEST) && - qp->s_ack_state != IB_OPCODE_ACKNOWLEDGE) { - spin_unlock(&qp->s_lock); - goto done; - } - qp->s_ack_state = OP(SEND_ONLY); - qp->s_nak_state = IB_RNR_NAK | qp->s_min_rnr_timer; - qp->s_ack_psn = qp->r_psn; - goto resched; + if (qp->r_ack_state >= OP(COMPARE_SWAP)) + goto send_ack; + qp->r_ack_state = OP(SEND_ONLY); + qp->r_nak_state = IB_RNR_NAK | qp->r_min_rnr_timer; + qp->r_ack_psn = qp->r_psn; + goto send_ack; } qp->r_rcv_len = 0; /* FALLTHROUGH */ @@ -1622,10 +1498,10 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, if (unlikely(wc.byte_len > qp->r_len)) goto nack_inv; ipath_copy_sge(&qp->r_sge, data, tlen); - atomic_inc(&qp->msn); - if (opcode == OP(RDMA_WRITE_LAST) || - opcode == OP(RDMA_WRITE_ONLY)) + qp->r_msn++; + if (!qp->r_wrid_valid) break; + qp->r_wrid_valid = 0; wc.wr_id = qp->r_wr_id; wc.status = IB_WC_SUCCESS; wc.opcode = IB_WC_RECV; @@ -1663,32 +1539,11 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, int ok; /* Check rkey & NAK */ - ok = ipath_rkey_ok(dev, &qp->r_sge, + ok = ipath_rkey_ok(qp, &qp->r_sge, qp->r_len, vaddr, rkey, IB_ACCESS_REMOTE_WRITE); - if (unlikely(!ok)) { - nack_acc: - /* - * A NAK will ACK earlier sends and RDMA - * writes. Don't queue the NAK if a RDMA - * read, atomic, or NAK is pending though. - */ - spin_lock(&qp->s_lock); - if (qp->s_ack_state >= - OP(RDMA_READ_REQUEST) && - qp->s_ack_state != - IB_OPCODE_ACKNOWLEDGE) { - spin_unlock(&qp->s_lock); - goto done; - } - /* XXX Flush WQEs */ - qp->state = IB_QPS_ERR; - qp->s_ack_state = OP(RDMA_WRITE_ONLY); - qp->s_nak_state = - IB_NAK_REMOTE_ACCESS_ERROR; - qp->s_ack_psn = qp->r_psn; - goto resched; - } + if (unlikely(!ok)) + goto nack_acc; } else { qp->r_sge.sg_list = NULL; qp->r_sge.sge.mr = NULL; @@ -1715,12 +1570,10 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, reth = (struct ib_reth *)data; data += sizeof(*reth); } - spin_lock(&qp->s_lock); - if (qp->s_ack_state != OP(ACKNOWLEDGE) && - qp->s_ack_state >= IB_OPCODE_RDMA_READ_REQUEST) { - spin_unlock(&qp->s_lock); - goto done; - } + if (unlikely(!(qp->qp_access_flags & + IB_ACCESS_REMOTE_READ))) + goto nack_acc; + spin_lock_irq(&qp->s_lock); qp->s_rdma_len = be32_to_cpu(reth->length); if (qp->s_rdma_len != 0) { u32 rkey = be32_to_cpu(reth->rkey); @@ -1728,11 +1581,11 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, int ok; /* Check rkey & NAK */ - ok = ipath_rkey_ok(dev, &qp->s_rdma_sge, + ok = ipath_rkey_ok(qp, &qp->s_rdma_sge, qp->s_rdma_len, vaddr, rkey, IB_ACCESS_REMOTE_READ); if (unlikely(!ok)) { - spin_unlock(&qp->s_lock); + spin_unlock_irq(&qp->s_lock); goto nack_acc; } /* @@ -1749,21 +1602,25 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, qp->s_rdma_sge.sge.length = 0; qp->s_rdma_sge.sge.sge_length = 0; } - if (unlikely(!(qp->qp_access_flags & - IB_ACCESS_REMOTE_READ))) - goto nack_acc; /* * We need to increment the MSN here instead of when we * finish sending the result since a duplicate request would * increment it more than once. */ - atomic_inc(&qp->msn); + qp->r_msn++; + qp->s_ack_state = opcode; - qp->s_nak_state = 0; qp->s_ack_psn = psn; + spin_unlock_irq(&qp->s_lock); + qp->r_psn++; qp->r_state = opcode; - goto rdmadone; + qp->r_nak_state = 0; + + /* Call ipath_do_rc_send() in another thread. */ + tasklet_hi_schedule(&qp->s_task); + + goto done; case OP(COMPARE_SWAP): case OP(FETCH_ADD): { @@ -1783,7 +1640,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, goto nack_inv; rkey = be32_to_cpu(ateth->rkey); /* Check rkey & NAK */ - if (unlikely(!ipath_rkey_ok(dev, &qp->r_sge, + if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge, sizeof(u64), vaddr, rkey, IB_ACCESS_REMOTE_ATOMIC))) goto nack_acc; @@ -1792,7 +1649,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, goto nack_acc; /* Perform atomic OP and save result. */ sdata = be64_to_cpu(ateth->swap_data); - spin_lock(&dev->pending_lock); + spin_lock_irq(&dev->pending_lock); qp->r_atomic_data = *(u64 *) qp->r_sge.sge.vaddr; if (opcode == OP(FETCH_ADD)) *(u64 *) qp->r_sge.sge.vaddr = @@ -1800,9 +1657,9 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, else if (qp->r_atomic_data == be64_to_cpu(ateth->compare_data)) *(u64 *) qp->r_sge.sge.vaddr = sdata; - spin_unlock(&dev->pending_lock); - atomic_inc(&qp->msn); - qp->r_atomic_psn = psn & IPS_PSN_MASK; + spin_unlock_irq(&dev->pending_lock); + qp->r_msn++; + qp->r_atomic_psn = psn & IPATH_PSN_MASK; psn |= 1 << 31; break; } @@ -1813,44 +1670,38 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, } qp->r_psn++; qp->r_state = opcode; + qp->r_nak_state = 0; /* Send an ACK if requested or required. */ if (psn & (1 << 31)) { /* * Coalesce ACKs unless there is a RDMA READ or * ATOMIC pending. */ - spin_lock(&qp->s_lock); - if (qp->s_ack_state == OP(ACKNOWLEDGE) || - qp->s_ack_state < IB_OPCODE_RDMA_READ_REQUEST) { - qp->s_ack_state = opcode; - qp->s_nak_state = 0; - qp->s_ack_psn = psn; - qp->s_ack_atomic = qp->r_atomic_data; - goto resched; + if (qp->r_ack_state < OP(COMPARE_SWAP)) { + qp->r_ack_state = opcode; + qp->r_ack_psn = psn; } - spin_unlock(&qp->s_lock); + goto send_ack; } -done: - spin_unlock_irqrestore(&qp->r_rq.lock, flags); - goto bail; + goto done; -resched: +nack_acc: /* - * Try to send ACK right away but not if ipath_do_rc_send() is - * active. + * A NAK will ACK earlier sends and RDMA writes. + * Don't queue the NAK if a RDMA read, atomic, or NAK + * is pending though. */ - if (qp->s_hdrwords == 0 && - (qp->s_ack_state < IB_OPCODE_RDMA_READ_REQUEST || - qp->s_ack_state >= IB_OPCODE_COMPARE_SWAP)) + if (qp->r_ack_state < OP(COMPARE_SWAP)) { + ipath_rc_error(qp, IB_WC_REM_ACCESS_ERR); + qp->r_ack_state = OP(RDMA_WRITE_ONLY); + qp->r_nak_state = IB_NAK_REMOTE_ACCESS_ERROR; + qp->r_ack_psn = qp->r_psn; + } +send_ack: + /* Send ACK right away unless the send tasklet has a pending ACK. */ + if (qp->s_ack_state == OP(ACKNOWLEDGE)) send_rc_ack(qp); -rdmadone: - spin_unlock(&qp->s_lock); - spin_unlock_irqrestore(&qp->r_rq.lock, flags); - - /* Call ipath_do_rc_send() in another thread. */ - tasklet_hi_schedule(&qp->s_task); - -bail: +done: return; } diff --git a/drivers/infiniband/hw/ipath/ipath_registers.h b/drivers/infiniband/hw/ipath/ipath_registers.h index 402126eb79c9..dffc76016d3c 100644 --- a/drivers/infiniband/hw/ipath/ipath_registers.h +++ b/drivers/infiniband/hw/ipath/ipath_registers.h @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -35,8 +36,7 @@ /* * This file should only be included by kernel source, and by the diags. It - * defines the registers, and their contents, for the InfiniPath HT-400 - * chip. + * defines the registers, and their contents, for InfiniPath chips. */ /* @@ -134,10 +134,24 @@ #define INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT 40 #define INFINIPATH_HWE_RXEMEMPARITYERR_MASK 0x7FULL #define INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT 44 -#define INFINIPATH_HWE_RXDSYNCMEMPARITYERR 0x0000000400000000ULL -#define INFINIPATH_HWE_MEMBISTFAILED 0x0040000000000000ULL #define INFINIPATH_HWE_IBCBUSTOSPCPARITYERR 0x4000000000000000ULL #define INFINIPATH_HWE_IBCBUSFRSPCPARITYERR 0x8000000000000000ULL +/* txe mem parity errors (shift by INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) */ +#define INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF 0x1ULL +#define INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC 0x2ULL +#define INFINIPATH_HWE_TXEMEMPARITYERR_PIOLAUNCHFIFO 0x4ULL +/* rxe mem parity errors (shift by INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) */ +#define INFINIPATH_HWE_RXEMEMPARITYERR_RCVBUF 0x01ULL +#define INFINIPATH_HWE_RXEMEMPARITYERR_LOOKUPQ 0x02ULL +#define INFINIPATH_HWE_RXEMEMPARITYERR_EAGERTID 0x04ULL +#define INFINIPATH_HWE_RXEMEMPARITYERR_EXPTID 0x08ULL +#define INFINIPATH_HWE_RXEMEMPARITYERR_FLAGBUF 0x10ULL +#define INFINIPATH_HWE_RXEMEMPARITYERR_DATAINFO 0x20ULL +#define INFINIPATH_HWE_RXEMEMPARITYERR_HDRINFO 0x40ULL +/* waldo specific -- find the rest in ipath_6110.c */ +#define INFINIPATH_HWE_RXDSYNCMEMPARITYERR 0x0000000400000000ULL +/* monty specific -- find the rest in ipath_6120.c */ +#define INFINIPATH_HWE_MEMBISTFAILED 0x0040000000000000ULL /* kr_hwdiagctrl bits */ #define INFINIPATH_DC_FORCETXEMEMPARITYERR_MASK 0xFULL @@ -209,9 +223,9 @@ /* combination link status states that we use with some frequency */ #define IPATH_IBSTATE_MASK ((INFINIPATH_IBCS_LINKTRAININGSTATE_MASK \ - << INFINIPATH_IBCS_LINKSTATE_SHIFT) | \ + << INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) | \ (INFINIPATH_IBCS_LINKSTATE_MASK \ - <<INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT)) + <<INFINIPATH_IBCS_LINKSTATE_SHIFT)) #define IPATH_IBSTATE_INIT ((INFINIPATH_IBCS_L_STATE_INIT \ << INFINIPATH_IBCS_LINKSTATE_SHIFT) | \ (INFINIPATH_IBCS_LT_STATE_LINKUP \ @@ -282,10 +296,12 @@ #define INFINIPATH_XGXS_RESET 0x7ULL #define INFINIPATH_XGXS_MDIOADDR_MASK 0xfULL #define INFINIPATH_XGXS_MDIOADDR_SHIFT 4 +#define INFINIPATH_XGXS_RX_POL_SHIFT 19 +#define INFINIPATH_XGXS_RX_POL_MASK 0xfULL #define INFINIPATH_RT_ADDR_MASK 0xFFFFFFFFFFULL /* 40 bits valid */ -/* TID entries (memory), HT400-only */ +/* TID entries (memory), HT-only */ #define INFINIPATH_RT_VALID 0x8000000000000000ULL #define INFINIPATH_RT_ADDR_SHIFT 0 #define INFINIPATH_RT_BUFSIZE_MASK 0x3FFF @@ -300,6 +316,17 @@ typedef u64 ipath_err_t; +/* The following change with the type of device, so + * need to be part of the ipath_devdata struct, or + * we could have problems plugging in devices of + * different types (e.g. one HT, one PCIE) + * in one system, to be managed by one driver. + * On the other hand, this file is may also be included + * by other code, so leave the declarations here + * temporarily. Minor footprint issue if common-model + * linker used, none if C89+ linker used. + */ + /* mask of defined bits for various registers */ extern u64 infinipath_i_bitsextant; extern ipath_err_t infinipath_e_bitsextant, infinipath_hwe_bitsextant; @@ -308,13 +335,6 @@ extern ipath_err_t infinipath_e_bitsextant, infinipath_hwe_bitsextant; extern u32 infinipath_i_rcvavail_mask, infinipath_i_rcvurg_mask; /* - * register bits for selecting i2c direction and values, used for I2C serial - * flash - */ -extern u16 ipath_gpio_sda_num, ipath_gpio_scl_num; -extern u64 ipath_gpio_sda, ipath_gpio_scl; - -/* * These are the infinipath general register numbers (not offsets). * The kernel registers are used directly, those beyond the kernel * registers are calculated from one of the base registers. The use of diff --git a/drivers/infiniband/hw/ipath/ipath_ruc.c b/drivers/infiniband/hw/ipath/ipath_ruc.c index d38f4f3cfd1d..f7530512045d 100644 --- a/drivers/infiniband/hw/ipath/ipath_ruc.c +++ b/drivers/infiniband/hw/ipath/ipath_ruc.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -31,6 +32,7 @@ */ #include "ipath_verbs.h" +#include "ipath_kernel.h" /* * Convert the AETH RNR timeout code into the number of milliseconds. @@ -104,6 +106,52 @@ void ipath_insert_rnr_queue(struct ipath_qp *qp) spin_unlock_irqrestore(&dev->pending_lock, flags); } +static int init_sge(struct ipath_qp *qp, struct ipath_rwqe *wqe) +{ + int user = to_ipd(qp->ibqp.pd)->user; + int i, j, ret; + struct ib_wc wc; + + qp->r_len = 0; + for (i = j = 0; i < wqe->num_sge; i++) { + if (wqe->sg_list[i].length == 0) + continue; + /* Check LKEY */ + if ((user && wqe->sg_list[i].lkey == 0) || + !ipath_lkey_ok(qp, &qp->r_sg_list[j], &wqe->sg_list[i], + IB_ACCESS_LOCAL_WRITE)) + goto bad_lkey; + qp->r_len += wqe->sg_list[i].length; + j++; + } + qp->r_sge.sge = qp->r_sg_list[0]; + qp->r_sge.sg_list = qp->r_sg_list + 1; + qp->r_sge.num_sge = j; + ret = 1; + goto bail; + +bad_lkey: + wc.wr_id = wqe->wr_id; + wc.status = IB_WC_LOC_PROT_ERR; + wc.opcode = IB_WC_RECV; + wc.vendor_err = 0; + wc.byte_len = 0; + wc.imm_data = 0; + wc.qp_num = qp->ibqp.qp_num; + wc.src_qp = 0; + wc.wc_flags = 0; + wc.pkey_index = 0; + wc.slid = 0; + wc.sl = 0; + wc.dlid_path_bits = 0; + wc.port_num = 0; + /* Signal solicited completion event. */ + ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, 1); + ret = 0; +bail: + return ret; +} + /** * ipath_get_rwqe - copy the next RWQE into the QP's RWQE * @qp: the QP @@ -111,74 +159,77 @@ void ipath_insert_rnr_queue(struct ipath_qp *qp) * * Return 0 if no RWQE is available, otherwise return 1. * - * Called at interrupt level with the QP r_rq.lock held. + * Can be called from interrupt level. */ int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only) { + unsigned long flags; struct ipath_rq *rq; + struct ipath_rwq *wq; struct ipath_srq *srq; struct ipath_rwqe *wqe; + void (*handler)(struct ib_event *, void *); + u32 tail; int ret; - if (!qp->ibqp.srq) { + if (qp->ibqp.srq) { + srq = to_isrq(qp->ibqp.srq); + handler = srq->ibsrq.event_handler; + rq = &srq->rq; + } else { + srq = NULL; + handler = NULL; rq = &qp->r_rq; - if (unlikely(rq->tail == rq->head)) { + } + + spin_lock_irqsave(&rq->lock, flags); + wq = rq->wq; + tail = wq->tail; + /* Validate tail before using it since it is user writable. */ + if (tail >= rq->size) + tail = 0; + do { + if (unlikely(tail == wq->head)) { + spin_unlock_irqrestore(&rq->lock, flags); ret = 0; goto bail; } - wqe = get_rwqe_ptr(rq, rq->tail); - qp->r_wr_id = wqe->wr_id; - if (!wr_id_only) { - qp->r_sge.sge = wqe->sg_list[0]; - qp->r_sge.sg_list = wqe->sg_list + 1; - qp->r_sge.num_sge = wqe->num_sge; - qp->r_len = wqe->length; - } - if (++rq->tail >= rq->size) - rq->tail = 0; - ret = 1; - goto bail; - } - - srq = to_isrq(qp->ibqp.srq); - rq = &srq->rq; - spin_lock(&rq->lock); - if (unlikely(rq->tail == rq->head)) { - spin_unlock(&rq->lock); - ret = 0; - goto bail; - } - wqe = get_rwqe_ptr(rq, rq->tail); + wqe = get_rwqe_ptr(rq, tail); + if (++tail >= rq->size) + tail = 0; + } while (!wr_id_only && !init_sge(qp, wqe)); qp->r_wr_id = wqe->wr_id; - if (!wr_id_only) { - qp->r_sge.sge = wqe->sg_list[0]; - qp->r_sge.sg_list = wqe->sg_list + 1; - qp->r_sge.num_sge = wqe->num_sge; - qp->r_len = wqe->length; - } - if (++rq->tail >= rq->size) - rq->tail = 0; - if (srq->ibsrq.event_handler) { - struct ib_event ev; + wq->tail = tail; + + ret = 1; + if (handler) { u32 n; - if (rq->head < rq->tail) - n = rq->size + rq->head - rq->tail; + /* + * validate head pointer value and compute + * the number of remaining WQEs. + */ + n = wq->head; + if (n >= rq->size) + n = 0; + if (n < tail) + n += rq->size - tail; else - n = rq->head - rq->tail; + n -= tail; if (n < srq->limit) { + struct ib_event ev; + srq->limit = 0; - spin_unlock(&rq->lock); + spin_unlock_irqrestore(&rq->lock, flags); ev.device = qp->ibqp.device; ev.element.srq = qp->ibqp.srq; ev.event = IB_EVENT_SRQ_LIMIT_REACHED; - srq->ibsrq.event_handler(&ev, - srq->ibsrq.srq_context); - } else - spin_unlock(&rq->lock); - } else - spin_unlock(&rq->lock); - ret = 1; + handler(&ev, srq->ibsrq.srq_context); + goto bail; + } + } + spin_unlock_irqrestore(&rq->lock, flags); + qp->r_wrid_valid = 1; bail: return ret; @@ -187,7 +238,6 @@ bail: /** * ipath_ruc_loopback - handle UC and RC lookback requests * @sqp: the loopback QP - * @wc: the work completion entry * * This is called from ipath_do_uc_send() or ipath_do_rc_send() to * forward a WQE addressed to the same HCA. @@ -196,13 +246,14 @@ bail: * receive interrupts since this is a connected protocol and all packets * will pass through here. */ -void ipath_ruc_loopback(struct ipath_qp *sqp, struct ib_wc *wc) +static void ipath_ruc_loopback(struct ipath_qp *sqp) { struct ipath_ibdev *dev = to_idev(sqp->ibqp.device); struct ipath_qp *qp; struct ipath_swqe *wqe; struct ipath_sge *sge; unsigned long flags; + struct ib_wc wc; u64 sdata; qp = ipath_lookup_qpn(&dev->qp_table, sqp->remote_qpn); @@ -233,8 +284,8 @@ again: wqe = get_swqe_ptr(sqp, sqp->s_last); spin_unlock_irqrestore(&sqp->s_lock, flags); - wc->wc_flags = 0; - wc->imm_data = 0; + wc.wc_flags = 0; + wc.imm_data = 0; sqp->s_sge.sge = wqe->sg_list[0]; sqp->s_sge.sg_list = wqe->sg_list + 1; @@ -242,68 +293,63 @@ again: sqp->s_len = wqe->length; switch (wqe->wr.opcode) { case IB_WR_SEND_WITH_IMM: - wc->wc_flags = IB_WC_WITH_IMM; - wc->imm_data = wqe->wr.imm_data; + wc.wc_flags = IB_WC_WITH_IMM; + wc.imm_data = wqe->wr.imm_data; /* FALLTHROUGH */ case IB_WR_SEND: - spin_lock_irqsave(&qp->r_rq.lock, flags); if (!ipath_get_rwqe(qp, 0)) { rnr_nak: - spin_unlock_irqrestore(&qp->r_rq.lock, flags); /* Handle RNR NAK */ if (qp->ibqp.qp_type == IB_QPT_UC) goto send_comp; if (sqp->s_rnr_retry == 0) { - wc->status = IB_WC_RNR_RETRY_EXC_ERR; + wc.status = IB_WC_RNR_RETRY_EXC_ERR; goto err; } if (sqp->s_rnr_retry_cnt < 7) sqp->s_rnr_retry--; dev->n_rnr_naks++; sqp->s_rnr_timeout = - ib_ipath_rnr_table[sqp->s_min_rnr_timer]; + ib_ipath_rnr_table[sqp->r_min_rnr_timer]; ipath_insert_rnr_queue(sqp); goto done; } - spin_unlock_irqrestore(&qp->r_rq.lock, flags); break; case IB_WR_RDMA_WRITE_WITH_IMM: - wc->wc_flags = IB_WC_WITH_IMM; - wc->imm_data = wqe->wr.imm_data; - spin_lock_irqsave(&qp->r_rq.lock, flags); + wc.wc_flags = IB_WC_WITH_IMM; + wc.imm_data = wqe->wr.imm_data; if (!ipath_get_rwqe(qp, 1)) goto rnr_nak; - spin_unlock_irqrestore(&qp->r_rq.lock, flags); /* FALLTHROUGH */ case IB_WR_RDMA_WRITE: if (wqe->length == 0) break; - if (unlikely(!ipath_rkey_ok(dev, &qp->r_sge, wqe->length, + if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge, wqe->length, wqe->wr.wr.rdma.remote_addr, wqe->wr.wr.rdma.rkey, IB_ACCESS_REMOTE_WRITE))) { acc_err: - wc->status = IB_WC_REM_ACCESS_ERR; + wc.status = IB_WC_REM_ACCESS_ERR; err: - wc->wr_id = wqe->wr.wr_id; - wc->opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - wc->vendor_err = 0; - wc->byte_len = 0; - wc->qp_num = sqp->ibqp.qp_num; - wc->src_qp = sqp->remote_qpn; - wc->pkey_index = 0; - wc->slid = sqp->remote_ah_attr.dlid; - wc->sl = sqp->remote_ah_attr.sl; - wc->dlid_path_bits = 0; - wc->port_num = 0; - ipath_sqerror_qp(sqp, wc); + wc.wr_id = wqe->wr.wr_id; + wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; + wc.vendor_err = 0; + wc.byte_len = 0; + wc.qp_num = sqp->ibqp.qp_num; + wc.src_qp = sqp->remote_qpn; + wc.pkey_index = 0; + wc.slid = sqp->remote_ah_attr.dlid; + wc.sl = sqp->remote_ah_attr.sl; + wc.dlid_path_bits = 0; + wc.port_num = 0; + ipath_sqerror_qp(sqp, &wc); goto done; } break; case IB_WR_RDMA_READ: - if (unlikely(!ipath_rkey_ok(dev, &sqp->s_sge, wqe->length, + if (unlikely(!ipath_rkey_ok(qp, &sqp->s_sge, wqe->length, wqe->wr.wr.rdma.remote_addr, wqe->wr.wr.rdma.rkey, IB_ACCESS_REMOTE_READ))) @@ -318,7 +364,7 @@ again: case IB_WR_ATOMIC_CMP_AND_SWP: case IB_WR_ATOMIC_FETCH_AND_ADD: - if (unlikely(!ipath_rkey_ok(dev, &qp->r_sge, sizeof(u64), + if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge, sizeof(u64), wqe->wr.wr.rdma.remote_addr, wqe->wr.wr.rdma.rkey, IB_ACCESS_REMOTE_ATOMIC))) @@ -373,22 +419,22 @@ again: goto send_comp; if (wqe->wr.opcode == IB_WR_RDMA_WRITE_WITH_IMM) - wc->opcode = IB_WC_RECV_RDMA_WITH_IMM; + wc.opcode = IB_WC_RECV_RDMA_WITH_IMM; else - wc->opcode = IB_WC_RECV; - wc->wr_id = qp->r_wr_id; - wc->status = IB_WC_SUCCESS; - wc->vendor_err = 0; - wc->byte_len = wqe->length; - wc->qp_num = qp->ibqp.qp_num; - wc->src_qp = qp->remote_qpn; + wc.opcode = IB_WC_RECV; + wc.wr_id = qp->r_wr_id; + wc.status = IB_WC_SUCCESS; + wc.vendor_err = 0; + wc.byte_len = wqe->length; + wc.qp_num = qp->ibqp.qp_num; + wc.src_qp = qp->remote_qpn; /* XXX do we know which pkey matched? Only needed for GSI. */ - wc->pkey_index = 0; - wc->slid = qp->remote_ah_attr.dlid; - wc->sl = qp->remote_ah_attr.sl; - wc->dlid_path_bits = 0; + wc.pkey_index = 0; + wc.slid = qp->remote_ah_attr.dlid; + wc.sl = qp->remote_ah_attr.sl; + wc.dlid_path_bits = 0; /* Signal completion event if the solicited bit is set. */ - ipath_cq_enter(to_icq(qp->ibqp.recv_cq), wc, + ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, wqe->wr.send_flags & IB_SEND_SOLICITED); send_comp: @@ -396,19 +442,19 @@ send_comp: if (!test_bit(IPATH_S_SIGNAL_REQ_WR, &sqp->s_flags) || (wqe->wr.send_flags & IB_SEND_SIGNALED)) { - wc->wr_id = wqe->wr.wr_id; - wc->status = IB_WC_SUCCESS; - wc->opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - wc->vendor_err = 0; - wc->byte_len = wqe->length; - wc->qp_num = sqp->ibqp.qp_num; - wc->src_qp = 0; - wc->pkey_index = 0; - wc->slid = 0; - wc->sl = 0; - wc->dlid_path_bits = 0; - wc->port_num = 0; - ipath_cq_enter(to_icq(sqp->ibqp.send_cq), wc, 0); + wc.wr_id = wqe->wr.wr_id; + wc.status = IB_WC_SUCCESS; + wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; + wc.vendor_err = 0; + wc.byte_len = wqe->length; + wc.qp_num = sqp->ibqp.qp_num; + wc.src_qp = 0; + wc.pkey_index = 0; + wc.slid = 0; + wc.sl = 0; + wc.dlid_path_bits = 0; + wc.port_num = 0; + ipath_cq_enter(to_icq(sqp->ibqp.send_cq), &wc, 0); } /* Update s_last now that we are finished with the SWQE */ @@ -423,6 +469,15 @@ done: wake_up(&qp->wait); } +static int want_buffer(struct ipath_devdata *dd) +{ + set_bit(IPATH_S_PIOINTBUFAVAIL, &dd->ipath_sendctrl); + ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, + dd->ipath_sendctrl); + + return 0; +} + /** * ipath_no_bufs_available - tell the layer driver we need buffers * @qp: the QP that caused the problem @@ -439,7 +494,7 @@ void ipath_no_bufs_available(struct ipath_qp *qp, struct ipath_ibdev *dev) list_add_tail(&qp->piowait, &dev->piowait); spin_unlock_irqrestore(&dev->pending_lock, flags); /* - * Note that as soon as ipath_layer_want_buffer() is called and + * Note that as soon as want_buffer() is called and * possibly before it returns, ipath_ib_piobufavail() * could be called. If we are still in the tasklet function, * tasklet_hi_schedule() will not call us until the next time @@ -449,16 +504,16 @@ void ipath_no_bufs_available(struct ipath_qp *qp, struct ipath_ibdev *dev) */ clear_bit(IPATH_S_BUSY, &qp->s_flags); tasklet_unlock(&qp->s_task); - ipath_layer_want_buffer(dev->dd); + want_buffer(dev->dd); dev->n_piowait++; } /** - * ipath_post_rc_send - post RC and UC sends + * ipath_post_ruc_send - post RC and UC sends * @qp: the QP to post on * @wr: the work request to send */ -int ipath_post_rc_send(struct ipath_qp *qp, struct ib_send_wr *wr) +int ipath_post_ruc_send(struct ipath_qp *qp, struct ib_send_wr *wr) { struct ipath_swqe *wqe; unsigned long flags; @@ -519,8 +574,7 @@ int ipath_post_rc_send(struct ipath_qp *qp, struct ib_send_wr *wr) } if (wr->sg_list[i].length == 0) continue; - if (!ipath_lkey_ok(&to_idev(qp->ibqp.device)->lk_table, - &wqe->sg_list[j], &wr->sg_list[i], + if (!ipath_lkey_ok(qp, &wqe->sg_list[j], &wr->sg_list[i], acc)) { spin_unlock_irqrestore(&qp->s_lock, flags); ret = -EINVAL; @@ -533,13 +587,148 @@ int ipath_post_rc_send(struct ipath_qp *qp, struct ib_send_wr *wr) qp->s_head = next; spin_unlock_irqrestore(&qp->s_lock, flags); - if (qp->ibqp.qp_type == IB_QPT_UC) - ipath_do_uc_send((unsigned long) qp); - else - ipath_do_rc_send((unsigned long) qp); + ipath_do_ruc_send((unsigned long) qp); ret = 0; bail: return ret; } + +/** + * ipath_make_grh - construct a GRH header + * @dev: a pointer to the ipath device + * @hdr: a pointer to the GRH header being constructed + * @grh: the global route address to send to + * @hwords: the number of 32 bit words of header being sent + * @nwords: the number of 32 bit words of data being sent + * + * Return the size of the header in 32 bit words. + */ +u32 ipath_make_grh(struct ipath_ibdev *dev, struct ib_grh *hdr, + struct ib_global_route *grh, u32 hwords, u32 nwords) +{ + hdr->version_tclass_flow = + cpu_to_be32((6 << 28) | + (grh->traffic_class << 20) | + grh->flow_label); + hdr->paylen = cpu_to_be16((hwords - 2 + nwords + SIZE_OF_CRC) << 2); + /* next_hdr is defined by C8-7 in ch. 8.4.1 */ + hdr->next_hdr = 0x1B; + hdr->hop_limit = grh->hop_limit; + /* The SGID is 32-bit aligned. */ + hdr->sgid.global.subnet_prefix = dev->gid_prefix; + hdr->sgid.global.interface_id = dev->dd->ipath_guid; + hdr->dgid = grh->dgid; + + /* GRH header size in 32-bit words. */ + return sizeof(struct ib_grh) / sizeof(u32); +} + +/** + * ipath_do_ruc_send - perform a send on an RC or UC QP + * @data: contains a pointer to the QP + * + * Process entries in the send work queue until credit or queue is + * exhausted. Only allow one CPU to send a packet per QP (tasklet). + * Otherwise, after we drop the QP s_lock, two threads could send + * packets out of order. + */ +void ipath_do_ruc_send(unsigned long data) +{ + struct ipath_qp *qp = (struct ipath_qp *)data; + struct ipath_ibdev *dev = to_idev(qp->ibqp.device); + unsigned long flags; + u16 lrh0; + u32 nwords; + u32 extra_bytes; + u32 bth0; + u32 bth2; + u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu); + struct ipath_other_headers *ohdr; + + if (test_and_set_bit(IPATH_S_BUSY, &qp->s_flags)) + goto bail; + + if (unlikely(qp->remote_ah_attr.dlid == dev->dd->ipath_lid)) { + ipath_ruc_loopback(qp); + goto clear; + } + + ohdr = &qp->s_hdr.u.oth; + if (qp->remote_ah_attr.ah_flags & IB_AH_GRH) + ohdr = &qp->s_hdr.u.l.oth; + +again: + /* Check for a constructed packet to be sent. */ + if (qp->s_hdrwords != 0) { + /* + * If no PIO bufs are available, return. An interrupt will + * call ipath_ib_piobufavail() when one is available. + */ + if (ipath_verbs_send(dev->dd, qp->s_hdrwords, + (u32 *) &qp->s_hdr, qp->s_cur_size, + qp->s_cur_sge)) { + ipath_no_bufs_available(qp, dev); + goto bail; + } + dev->n_unicast_xmit++; + /* Record that we sent the packet and s_hdr is empty. */ + qp->s_hdrwords = 0; + } + + /* + * The lock is needed to synchronize between setting + * qp->s_ack_state, resend timer, and post_send(). + */ + spin_lock_irqsave(&qp->s_lock, flags); + + /* Sending responses has higher priority over sending requests. */ + if (qp->s_ack_state != IB_OPCODE_RC_ACKNOWLEDGE && + (bth0 = ipath_make_rc_ack(qp, ohdr, pmtu)) != 0) + bth2 = qp->s_ack_psn++ & IPATH_PSN_MASK; + else if (!((qp->ibqp.qp_type == IB_QPT_RC) ? + ipath_make_rc_req(qp, ohdr, pmtu, &bth0, &bth2) : + ipath_make_uc_req(qp, ohdr, pmtu, &bth0, &bth2))) { + /* + * Clear the busy bit before unlocking to avoid races with + * adding new work queue items and then failing to process + * them. + */ + clear_bit(IPATH_S_BUSY, &qp->s_flags); + spin_unlock_irqrestore(&qp->s_lock, flags); + goto bail; + } + + spin_unlock_irqrestore(&qp->s_lock, flags); + + /* Construct the header. */ + extra_bytes = (4 - qp->s_cur_size) & 3; + nwords = (qp->s_cur_size + extra_bytes) >> 2; + lrh0 = IPATH_LRH_BTH; + if (unlikely(qp->remote_ah_attr.ah_flags & IB_AH_GRH)) { + qp->s_hdrwords += ipath_make_grh(dev, &qp->s_hdr.u.l.grh, + &qp->remote_ah_attr.grh, + qp->s_hdrwords, nwords); + lrh0 = IPATH_LRH_GRH; + } + lrh0 |= qp->remote_ah_attr.sl << 4; + qp->s_hdr.lrh[0] = cpu_to_be16(lrh0); + qp->s_hdr.lrh[1] = cpu_to_be16(qp->remote_ah_attr.dlid); + qp->s_hdr.lrh[2] = cpu_to_be16(qp->s_hdrwords + nwords + + SIZE_OF_CRC); + qp->s_hdr.lrh[3] = cpu_to_be16(dev->dd->ipath_lid); + bth0 |= ipath_get_pkey(dev->dd, qp->s_pkey_index); + bth0 |= extra_bytes << 20; + ohdr->bth[0] = cpu_to_be32(bth0); + ohdr->bth[1] = cpu_to_be32(qp->remote_qpn); + ohdr->bth[2] = cpu_to_be32(bth2); + + /* Check for more work to do. */ + goto again; + +clear: + clear_bit(IPATH_S_BUSY, &qp->s_flags); +bail: + return; +} diff --git a/drivers/infiniband/hw/ipath/ipath_srq.c b/drivers/infiniband/hw/ipath/ipath_srq.c index 01c4c6c56118..94033503400c 100644 --- a/drivers/infiniband/hw/ipath/ipath_srq.c +++ b/drivers/infiniband/hw/ipath/ipath_srq.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -47,66 +48,39 @@ int ipath_post_srq_receive(struct ib_srq *ibsrq, struct ib_recv_wr *wr, struct ib_recv_wr **bad_wr) { struct ipath_srq *srq = to_isrq(ibsrq); - struct ipath_ibdev *dev = to_idev(ibsrq->device); + struct ipath_rwq *wq; unsigned long flags; int ret; for (; wr; wr = wr->next) { struct ipath_rwqe *wqe; u32 next; - int i, j; + int i; - if (wr->num_sge > srq->rq.max_sge) { + if ((unsigned) wr->num_sge > srq->rq.max_sge) { *bad_wr = wr; ret = -ENOMEM; goto bail; } spin_lock_irqsave(&srq->rq.lock, flags); - next = srq->rq.head + 1; + wq = srq->rq.wq; + next = wq->head + 1; if (next >= srq->rq.size) next = 0; - if (next == srq->rq.tail) { + if (next == wq->tail) { spin_unlock_irqrestore(&srq->rq.lock, flags); *bad_wr = wr; ret = -ENOMEM; goto bail; } - wqe = get_rwqe_ptr(&srq->rq, srq->rq.head); + wqe = get_rwqe_ptr(&srq->rq, wq->head); wqe->wr_id = wr->wr_id; - wqe->sg_list[0].mr = NULL; - wqe->sg_list[0].vaddr = NULL; - wqe->sg_list[0].length = 0; - wqe->sg_list[0].sge_length = 0; - wqe->length = 0; - for (i = 0, j = 0; i < wr->num_sge; i++) { - /* Check LKEY */ - if (to_ipd(srq->ibsrq.pd)->user && - wr->sg_list[i].lkey == 0) { - spin_unlock_irqrestore(&srq->rq.lock, - flags); - *bad_wr = wr; - ret = -EINVAL; - goto bail; - } - if (wr->sg_list[i].length == 0) - continue; - if (!ipath_lkey_ok(&dev->lk_table, - &wqe->sg_list[j], - &wr->sg_list[i], - IB_ACCESS_LOCAL_WRITE)) { - spin_unlock_irqrestore(&srq->rq.lock, - flags); - *bad_wr = wr; - ret = -EINVAL; - goto bail; - } - wqe->length += wr->sg_list[i].length; - j++; - } - wqe->num_sge = j; - srq->rq.head = next; + wqe->num_sge = wr->num_sge; + for (i = 0; i < wr->num_sge; i++) + wqe->sg_list[i] = wr->sg_list[i]; + wq->head = next; spin_unlock_irqrestore(&srq->rq.lock, flags); } ret = 0; @@ -125,46 +99,104 @@ struct ib_srq *ipath_create_srq(struct ib_pd *ibpd, struct ib_srq_init_attr *srq_init_attr, struct ib_udata *udata) { + struct ipath_ibdev *dev = to_idev(ibpd->device); struct ipath_srq *srq; u32 sz; struct ib_srq *ret; - if (srq_init_attr->attr.max_sge < 1) { + if (srq_init_attr->attr.max_wr == 0) { + ret = ERR_PTR(-EINVAL); + goto done; + } + + if ((srq_init_attr->attr.max_sge > ib_ipath_max_srq_sges) || + (srq_init_attr->attr.max_wr > ib_ipath_max_srq_wrs)) { ret = ERR_PTR(-EINVAL); - goto bail; + goto done; } srq = kmalloc(sizeof(*srq), GFP_KERNEL); if (!srq) { ret = ERR_PTR(-ENOMEM); - goto bail; + goto done; } /* * Need to use vmalloc() if we want to support large #s of entries. */ srq->rq.size = srq_init_attr->attr.max_wr + 1; - sz = sizeof(struct ipath_sge) * srq_init_attr->attr.max_sge + + srq->rq.max_sge = srq_init_attr->attr.max_sge; + sz = sizeof(struct ib_sge) * srq->rq.max_sge + sizeof(struct ipath_rwqe); - srq->rq.wq = vmalloc(srq->rq.size * sz); + srq->rq.wq = vmalloc_user(sizeof(struct ipath_rwq) + srq->rq.size * sz); if (!srq->rq.wq) { - kfree(srq); ret = ERR_PTR(-ENOMEM); - goto bail; + goto bail_srq; } /* + * Return the address of the RWQ as the offset to mmap. + * See ipath_mmap() for details. + */ + if (udata && udata->outlen >= sizeof(__u64)) { + struct ipath_mmap_info *ip; + __u64 offset = (__u64) srq->rq.wq; + int err; + + err = ib_copy_to_udata(udata, &offset, sizeof(offset)); + if (err) { + ret = ERR_PTR(err); + goto bail_wq; + } + + /* Allocate info for ipath_mmap(). */ + ip = kmalloc(sizeof(*ip), GFP_KERNEL); + if (!ip) { + ret = ERR_PTR(-ENOMEM); + goto bail_wq; + } + srq->ip = ip; + ip->context = ibpd->uobject->context; + ip->obj = srq->rq.wq; + kref_init(&ip->ref); + ip->mmap_cnt = 0; + ip->size = PAGE_ALIGN(sizeof(struct ipath_rwq) + + srq->rq.size * sz); + spin_lock_irq(&dev->pending_lock); + ip->next = dev->pending_mmaps; + dev->pending_mmaps = ip; + spin_unlock_irq(&dev->pending_lock); + } else + srq->ip = NULL; + + /* * ib_create_srq() will initialize srq->ibsrq. */ spin_lock_init(&srq->rq.lock); - srq->rq.head = 0; - srq->rq.tail = 0; - srq->rq.max_sge = srq_init_attr->attr.max_sge; + srq->rq.wq->head = 0; + srq->rq.wq->tail = 0; srq->limit = srq_init_attr->attr.srq_limit; + spin_lock(&dev->n_srqs_lock); + if (dev->n_srqs_allocated == ib_ipath_max_srqs) { + spin_unlock(&dev->n_srqs_lock); + ret = ERR_PTR(-ENOMEM); + goto bail_wq; + } + + dev->n_srqs_allocated++; + spin_unlock(&dev->n_srqs_lock); + ret = &srq->ibsrq; + goto done; -bail: +bail_wq: + vfree(srq->rq.wq); + +bail_srq: + kfree(srq); + +done: return ret; } @@ -173,76 +205,130 @@ bail: * @ibsrq: the SRQ to modify * @attr: the new attributes of the SRQ * @attr_mask: indicates which attributes to modify + * @udata: user data for ipathverbs.so */ int ipath_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, - enum ib_srq_attr_mask attr_mask) + enum ib_srq_attr_mask attr_mask, + struct ib_udata *udata) { struct ipath_srq *srq = to_isrq(ibsrq); - unsigned long flags; - int ret; + int ret = 0; - if (attr_mask & IB_SRQ_LIMIT) { - spin_lock_irqsave(&srq->rq.lock, flags); - srq->limit = attr->srq_limit; - spin_unlock_irqrestore(&srq->rq.lock, flags); - } if (attr_mask & IB_SRQ_MAX_WR) { - u32 size = attr->max_wr + 1; - struct ipath_rwqe *wq, *p; - u32 n; - u32 sz; + struct ipath_rwq *owq; + struct ipath_rwq *wq; + struct ipath_rwqe *p; + u32 sz, size, n, head, tail; - if (attr->max_sge < srq->rq.max_sge) { + /* Check that the requested sizes are below the limits. */ + if ((attr->max_wr > ib_ipath_max_srq_wrs) || + ((attr_mask & IB_SRQ_LIMIT) ? + attr->srq_limit : srq->limit) > attr->max_wr) { ret = -EINVAL; goto bail; } sz = sizeof(struct ipath_rwqe) + - attr->max_sge * sizeof(struct ipath_sge); - wq = vmalloc(size * sz); + srq->rq.max_sge * sizeof(struct ib_sge); + size = attr->max_wr + 1; + wq = vmalloc_user(sizeof(struct ipath_rwq) + size * sz); if (!wq) { ret = -ENOMEM; goto bail; } - spin_lock_irqsave(&srq->rq.lock, flags); - if (srq->rq.head < srq->rq.tail) - n = srq->rq.size + srq->rq.head - srq->rq.tail; + /* + * Return the address of the RWQ as the offset to mmap. + * See ipath_mmap() for details. + */ + if (udata && udata->inlen >= sizeof(__u64)) { + __u64 offset_addr; + __u64 offset = (__u64) wq; + + ret = ib_copy_from_udata(&offset_addr, udata, + sizeof(offset_addr)); + if (ret) { + vfree(wq); + goto bail; + } + udata->outbuf = (void __user *) offset_addr; + ret = ib_copy_to_udata(udata, &offset, + sizeof(offset)); + if (ret) { + vfree(wq); + goto bail; + } + } + + spin_lock_irq(&srq->rq.lock); + /* + * validate head pointer value and compute + * the number of remaining WQEs. + */ + owq = srq->rq.wq; + head = owq->head; + if (head >= srq->rq.size) + head = 0; + tail = owq->tail; + if (tail >= srq->rq.size) + tail = 0; + n = head; + if (n < tail) + n += srq->rq.size - tail; else - n = srq->rq.head - srq->rq.tail; - if (size <= n || size <= srq->limit) { - spin_unlock_irqrestore(&srq->rq.lock, flags); + n -= tail; + if (size <= n) { + spin_unlock_irq(&srq->rq.lock); vfree(wq); ret = -EINVAL; goto bail; } n = 0; - p = wq; - while (srq->rq.tail != srq->rq.head) { + p = wq->wq; + while (tail != head) { struct ipath_rwqe *wqe; int i; - wqe = get_rwqe_ptr(&srq->rq, srq->rq.tail); + wqe = get_rwqe_ptr(&srq->rq, tail); p->wr_id = wqe->wr_id; - p->length = wqe->length; p->num_sge = wqe->num_sge; for (i = 0; i < wqe->num_sge; i++) p->sg_list[i] = wqe->sg_list[i]; n++; p = (struct ipath_rwqe *)((char *) p + sz); - if (++srq->rq.tail >= srq->rq.size) - srq->rq.tail = 0; + if (++tail >= srq->rq.size) + tail = 0; } - vfree(srq->rq.wq); srq->rq.wq = wq; srq->rq.size = size; - srq->rq.head = n; - srq->rq.tail = 0; - srq->rq.max_sge = attr->max_sge; - spin_unlock_irqrestore(&srq->rq.lock, flags); - } + wq->head = n; + wq->tail = 0; + if (attr_mask & IB_SRQ_LIMIT) + srq->limit = attr->srq_limit; + spin_unlock_irq(&srq->rq.lock); - ret = 0; + vfree(owq); + + if (srq->ip) { + struct ipath_mmap_info *ip = srq->ip; + struct ipath_ibdev *dev = to_idev(srq->ibsrq.device); + + ip->obj = wq; + ip->size = PAGE_ALIGN(sizeof(struct ipath_rwq) + + size * sz); + spin_lock_irq(&dev->pending_lock); + ip->next = dev->pending_mmaps; + dev->pending_mmaps = ip; + spin_unlock_irq(&dev->pending_lock); + } + } else if (attr_mask & IB_SRQ_LIMIT) { + spin_lock_irq(&srq->rq.lock); + if (attr->srq_limit >= srq->rq.size) + ret = -EINVAL; + else + srq->limit = attr->srq_limit; + spin_unlock_irq(&srq->rq.lock); + } bail: return ret; @@ -265,8 +351,15 @@ int ipath_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr) int ipath_destroy_srq(struct ib_srq *ibsrq) { struct ipath_srq *srq = to_isrq(ibsrq); + struct ipath_ibdev *dev = to_idev(ibsrq->device); - vfree(srq->rq.wq); + spin_lock(&dev->n_srqs_lock); + dev->n_srqs_allocated--; + spin_unlock(&dev->n_srqs_lock); + if (srq->ip) + kref_put(&srq->ip->ref, ipath_release_mmap_info); + else + vfree(srq->rq.wq); kfree(srq); return 0; diff --git a/drivers/infiniband/hw/ipath/ipath_stats.c b/drivers/infiniband/hw/ipath/ipath_stats.c index fe209137ee74..30a825928fcf 100644 --- a/drivers/infiniband/hw/ipath/ipath_stats.c +++ b/drivers/infiniband/hw/ipath/ipath_stats.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -185,7 +186,6 @@ static void ipath_qcheck(struct ipath_devdata *dd) dd->ipath_port0head, (unsigned long long) ipath_stats.sps_port0pkts); - ipath_kreceive(dd); } dd->ipath_lastport0rcv_cnt = ipath_stats.sps_port0pkts; } @@ -271,33 +271,6 @@ void ipath_get_faststats(unsigned long opaque) } } - if (dd->ipath_nosma_bufs) { - dd->ipath_nosma_secs += 5; - if (dd->ipath_nosma_secs >= 30) { - ipath_cdbg(SMA, "No SMA bufs avail %u seconds; " - "cancelling pending sends\n", - dd->ipath_nosma_secs); - /* - * issue an abort as well, in case we have a packet - * stuck in launch fifo. This could corrupt an - * outgoing user packet in the worst case, - * but this is a pretty catastrophic, anyway. - */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - INFINIPATH_S_ABORT); - ipath_disarm_piobufs(dd, dd->ipath_lastport_piobuf, - dd->ipath_piobcnt2k + - dd->ipath_piobcnt4k - - dd->ipath_lastport_piobuf); - /* start again, if necessary */ - dd->ipath_nosma_secs = 0; - } else - ipath_cdbg(SMA, "No SMA bufs avail %u tries, " - "after %u seconds\n", - dd->ipath_nosma_bufs, - dd->ipath_nosma_secs); - } - done: mod_timer(&dd->ipath_stats_timer, jiffies + HZ * 5); } diff --git a/drivers/infiniband/hw/ipath/ipath_sysfs.c b/drivers/infiniband/hw/ipath/ipath_sysfs.c index f323791cc495..182de34f9f47 100644 --- a/drivers/infiniband/hw/ipath/ipath_sysfs.c +++ b/drivers/infiniband/hw/ipath/ipath_sysfs.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -34,8 +35,7 @@ #include <linux/pci.h> #include "ipath_kernel.h" -#include "ips_common.h" -#include "ipath_layer.h" +#include "ipath_common.h" /** * ipath_parse_ushort - parse an unsigned short value in an arbitrary base @@ -75,7 +75,7 @@ bail: static ssize_t show_version(struct device_driver *dev, char *buf) { /* The string printed here is already newline-terminated. */ - return scnprintf(buf, PAGE_SIZE, "%s", ipath_core_version); + return scnprintf(buf, PAGE_SIZE, "%s", ib_ipath_version); } static ssize_t show_num_units(struct device_driver *dev, char *buf) @@ -84,99 +84,6 @@ static ssize_t show_num_units(struct device_driver *dev, char *buf) ipath_count_units(NULL, NULL, NULL)); } -#define DRIVER_STAT(name, attr) \ - static ssize_t show_stat_##name(struct device_driver *dev, \ - char *buf) \ - { \ - return scnprintf( \ - buf, PAGE_SIZE, "%llu\n", \ - (unsigned long long) ipath_stats.sps_ ##attr); \ - } \ - static DRIVER_ATTR(name, S_IRUGO, show_stat_##name, NULL) - -DRIVER_STAT(intrs, ints); -DRIVER_STAT(err_intrs, errints); -DRIVER_STAT(errs, errs); -DRIVER_STAT(pkt_errs, pkterrs); -DRIVER_STAT(crc_errs, crcerrs); -DRIVER_STAT(hw_errs, hwerrs); -DRIVER_STAT(ib_link, iblink); -DRIVER_STAT(port0_pkts, port0pkts); -DRIVER_STAT(ether_spkts, ether_spkts); -DRIVER_STAT(ether_rpkts, ether_rpkts); -DRIVER_STAT(sma_spkts, sma_spkts); -DRIVER_STAT(sma_rpkts, sma_rpkts); -DRIVER_STAT(hdrq_full, hdrqfull); -DRIVER_STAT(etid_full, etidfull); -DRIVER_STAT(no_piobufs, nopiobufs); -DRIVER_STAT(ports, ports); -DRIVER_STAT(pkey0, pkeys[0]); -DRIVER_STAT(pkey1, pkeys[1]); -DRIVER_STAT(pkey2, pkeys[2]); -DRIVER_STAT(pkey3, pkeys[3]); -/* XXX fix the following when dynamic table of devices used */ -DRIVER_STAT(lid0, lid[0]); -DRIVER_STAT(lid1, lid[1]); -DRIVER_STAT(lid2, lid[2]); -DRIVER_STAT(lid3, lid[3]); - -DRIVER_STAT(nports, nports); -DRIVER_STAT(null_intr, nullintr); -DRIVER_STAT(max_pkts_call, maxpkts_call); -DRIVER_STAT(avg_pkts_call, avgpkts_call); -DRIVER_STAT(page_locks, pagelocks); -DRIVER_STAT(page_unlocks, pageunlocks); -DRIVER_STAT(krdrops, krdrops); -/* XXX fix the following when dynamic table of devices used */ -DRIVER_STAT(mlid0, mlid[0]); -DRIVER_STAT(mlid1, mlid[1]); -DRIVER_STAT(mlid2, mlid[2]); -DRIVER_STAT(mlid3, mlid[3]); - -static struct attribute *driver_stat_attributes[] = { - &driver_attr_intrs.attr, - &driver_attr_err_intrs.attr, - &driver_attr_errs.attr, - &driver_attr_pkt_errs.attr, - &driver_attr_crc_errs.attr, - &driver_attr_hw_errs.attr, - &driver_attr_ib_link.attr, - &driver_attr_port0_pkts.attr, - &driver_attr_ether_spkts.attr, - &driver_attr_ether_rpkts.attr, - &driver_attr_sma_spkts.attr, - &driver_attr_sma_rpkts.attr, - &driver_attr_hdrq_full.attr, - &driver_attr_etid_full.attr, - &driver_attr_no_piobufs.attr, - &driver_attr_ports.attr, - &driver_attr_pkey0.attr, - &driver_attr_pkey1.attr, - &driver_attr_pkey2.attr, - &driver_attr_pkey3.attr, - &driver_attr_lid0.attr, - &driver_attr_lid1.attr, - &driver_attr_lid2.attr, - &driver_attr_lid3.attr, - &driver_attr_nports.attr, - &driver_attr_null_intr.attr, - &driver_attr_max_pkts_call.attr, - &driver_attr_avg_pkts_call.attr, - &driver_attr_page_locks.attr, - &driver_attr_page_unlocks.attr, - &driver_attr_krdrops.attr, - &driver_attr_mlid0.attr, - &driver_attr_mlid1.attr, - &driver_attr_mlid2.attr, - &driver_attr_mlid3.attr, - NULL -}; - -static struct attribute_group driver_stat_attr_group = { - .name = "stats", - .attrs = driver_stat_attributes -}; - static ssize_t show_status(struct device *dev, struct device_attribute *attr, char *buf) @@ -200,8 +107,8 @@ static const char *ipath_status_str[] = { "Initted", "Disabled", "Admin_Disabled", - "OIB_SMA", - "SMA", + "", /* This used to be the old "OIB_SMA" status. */ + "", /* This used to be the old "SMA" status. */ "Present", "IB_link_up", "IB_configured", @@ -272,23 +179,23 @@ static ssize_t store_lid(struct device *dev, size_t count) { struct ipath_devdata *dd = dev_get_drvdata(dev); - u16 lid; + u16 lid = 0; int ret; ret = ipath_parse_ushort(buf, &lid); if (ret < 0) goto invalid; - if (lid == 0 || lid >= 0xc000) { + if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) { ret = -EINVAL; goto invalid; } - ipath_set_sps_lid(dd, lid, 0); + ipath_set_lid(dd, lid, 0); goto bail; invalid: - ipath_dev_err(dd, "attempt to set invalid LID\n"); + ipath_dev_err(dd, "attempt to set invalid LID 0x%x\n", lid); bail: return ret; } @@ -313,14 +220,12 @@ static ssize_t store_mlid(struct device *dev, int ret; ret = ipath_parse_ushort(buf, &mlid); - if (ret < 0) + if (ret < 0 || mlid < IPATH_MULTICAST_LID_BASE) goto invalid; unit = dd->ipath_unit; dd->ipath_mlid = mlid; - ipath_stats.sps_mlid[unit] = mlid; - ipath_layer_intr(dd, IPATH_LAYER_INT_BCAST); goto bail; invalid: @@ -352,7 +257,7 @@ static ssize_t store_guid(struct device *dev, struct ipath_devdata *dd = dev_get_drvdata(dev); ssize_t ret; unsigned short guid[8]; - __be64 nguid; + __be64 new_guid; u8 *ng; int i; @@ -361,7 +266,7 @@ static ssize_t store_guid(struct device *dev, &guid[4], &guid[5], &guid[6], &guid[7]) != 8) goto invalid; - ng = (u8 *) &nguid; + ng = (u8 *) &new_guid; for (i = 0; i < 8; i++) { if (guid[i] > 0xff) @@ -369,7 +274,10 @@ static ssize_t store_guid(struct device *dev, ng[i] = guid[i]; } - dd->ipath_guid = nguid; + if (new_guid == 0) + goto invalid; + + dd->ipath_guid = new_guid; dd->ipath_nguid = 1; ret = strlen(buf); @@ -392,6 +300,16 @@ static ssize_t show_nguid(struct device *dev, return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_nguid); } +static ssize_t show_nports(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct ipath_devdata *dd = dev_get_drvdata(dev); + + /* Return the number of user ports available. */ + return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_cfgports - 1); +} + static ssize_t show_serial(struct device *dev, struct device_attribute *attr, char *buf) @@ -560,7 +478,7 @@ static ssize_t store_link_state(struct device *dev, if (ret < 0) goto invalid; - r = ipath_layer_set_linkstate(dd, state); + r = ipath_set_linkstate(dd, state); if (r < 0) { ret = r; goto bail; @@ -595,7 +513,7 @@ static ssize_t store_mtu(struct device *dev, if (ret < 0) goto invalid; - r = ipath_layer_set_mtu(dd, mtu); + r = ipath_set_mtu(dd, mtu); if (r < 0) ret = r; @@ -656,6 +574,33 @@ bail: return ret; } +static ssize_t store_rx_pol_inv(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct ipath_devdata *dd = dev_get_drvdata(dev); + int ret, r; + u16 val; + + ret = ipath_parse_ushort(buf, &val); + if (ret < 0) + goto invalid; + + r = ipath_set_rx_pol_inv(dd, val); + if (r < 0) { + ret = r; + goto bail; + } + + goto bail; +invalid: + ipath_dev_err(dd, "attempt to set invalid Rx Polarity invert\n"); +bail: + return ret; +} + + static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL); static DRIVER_ATTR(version, S_IRUGO, show_version, NULL); @@ -676,12 +621,14 @@ static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid); static DEVICE_ATTR(mtu, S_IWUSR | S_IRUGO, show_mtu, store_mtu); static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO, show_enabled, store_enabled); static DEVICE_ATTR(nguid, S_IRUGO, show_nguid, NULL); +static DEVICE_ATTR(nports, S_IRUGO, show_nports, NULL); static DEVICE_ATTR(reset, S_IWUSR, NULL, store_reset); static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL); static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL); static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL); static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL); +static DEVICE_ATTR(rx_pol_inv, S_IWUSR, NULL, store_rx_pol_inv); static struct attribute *dev_attributes[] = { &dev_attr_guid.attr, @@ -690,12 +637,14 @@ static struct attribute *dev_attributes[] = { &dev_attr_mlid.attr, &dev_attr_mtu.attr, &dev_attr_nguid.attr, + &dev_attr_nports.attr, &dev_attr_serial.attr, &dev_attr_status.attr, &dev_attr_status_str.attr, &dev_attr_boardversion.attr, &dev_attr_unit.attr, &dev_attr_enabled.attr, + &dev_attr_rx_pol_inv.attr, NULL }; @@ -734,20 +683,12 @@ int ipath_driver_create_group(struct device_driver *drv) int ret; ret = sysfs_create_group(&drv->kobj, &driver_attr_group); - if (ret) - goto bail; - ret = sysfs_create_group(&drv->kobj, &driver_stat_attr_group); - if (ret) - sysfs_remove_group(&drv->kobj, &driver_attr_group); - -bail: return ret; } void ipath_driver_remove_group(struct device_driver *drv) { - sysfs_remove_group(&drv->kobj, &driver_stat_attr_group); sysfs_remove_group(&drv->kobj, &driver_attr_group); } diff --git a/drivers/infiniband/hw/ipath/ipath_uc.c b/drivers/infiniband/hw/ipath/ipath_uc.c index 0d6dbc0a541e..e636cfd67a82 100644 --- a/drivers/infiniband/hw/ipath/ipath_uc.c +++ b/drivers/infiniband/hw/ipath/ipath_uc.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -31,7 +32,7 @@ */ #include "ipath_verbs.h" -#include "ips_common.h" +#include "ipath_kernel.h" /* cut down ridiculously long IB macro names */ #define OP(x) IB_OPCODE_UC_##x @@ -61,90 +62,40 @@ static void complete_last_send(struct ipath_qp *qp, struct ipath_swqe *wqe, } /** - * ipath_do_uc_send - do a send on a UC queue - * @data: contains a pointer to the QP to send on + * ipath_make_uc_req - construct a request packet (SEND, RDMA write) + * @qp: a pointer to the QP + * @ohdr: a pointer to the IB header being constructed + * @pmtu: the path MTU + * @bth0p: pointer to the BTH opcode word + * @bth2p: pointer to the BTH PSN word * - * Process entries in the send work queue until the queue is exhausted. - * Only allow one CPU to send a packet per QP (tasklet). - * Otherwise, after we drop the QP lock, two threads could send - * packets out of order. - * This is similar to ipath_do_rc_send() below except we don't have - * timeouts or resends. + * Return 1 if constructed; otherwise, return 0. + * Note the QP s_lock must be held and interrupts disabled. */ -void ipath_do_uc_send(unsigned long data) +int ipath_make_uc_req(struct ipath_qp *qp, + struct ipath_other_headers *ohdr, + u32 pmtu, u32 *bth0p, u32 *bth2p) { - struct ipath_qp *qp = (struct ipath_qp *)data; - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); struct ipath_swqe *wqe; - unsigned long flags; - u16 lrh0; u32 hwords; - u32 nwords; - u32 extra_bytes; u32 bth0; - u32 bth2; - u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu); u32 len; - struct ipath_other_headers *ohdr; struct ib_wc wc; - if (test_and_set_bit(IPATH_S_BUSY, &qp->s_flags)) - goto bail; - - if (unlikely(qp->remote_ah_attr.dlid == - ipath_layer_get_lid(dev->dd))) { - /* Pass in an uninitialized ib_wc to save stack space. */ - ipath_ruc_loopback(qp, &wc); - clear_bit(IPATH_S_BUSY, &qp->s_flags); - goto bail; - } - - ohdr = &qp->s_hdr.u.oth; - if (qp->remote_ah_attr.ah_flags & IB_AH_GRH) - ohdr = &qp->s_hdr.u.l.oth; - -again: - /* Check for a constructed packet to be sent. */ - if (qp->s_hdrwords != 0) { - /* - * If no PIO bufs are available, return. - * An interrupt will call ipath_ib_piobufavail() - * when one is available. - */ - if (ipath_verbs_send(dev->dd, qp->s_hdrwords, - (u32 *) &qp->s_hdr, - qp->s_cur_size, - qp->s_cur_sge)) { - ipath_no_bufs_available(qp, dev); - goto bail; - } - dev->n_unicast_xmit++; - /* Record that we sent the packet and s_hdr is empty. */ - qp->s_hdrwords = 0; - } - - lrh0 = IPS_LRH_BTH; - /* header size in 32-bit words LRH+BTH = (8+12)/4. */ - hwords = 5; - - /* - * The lock is needed to synchronize between - * setting qp->s_ack_state and post_send(). - */ - spin_lock_irqsave(&qp->s_lock, flags); - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK)) goto done; - bth0 = ipath_layer_get_pkey(dev->dd, qp->s_pkey_index); + /* header size in 32-bit words LRH+BTH = (8+12)/4. */ + hwords = 5; + bth0 = 0; - /* Send a request. */ + /* Get the next send request. */ wqe = get_swqe_ptr(qp, qp->s_last); switch (qp->s_state) { default: /* - * Signal the completion of the last send (if there is - * one). + * Signal the completion of the last send + * (if there is one). */ if (qp->s_last != qp->s_tail) complete_last_send(qp, wqe, &wc); @@ -257,61 +208,16 @@ again: } break; } - bth2 = qp->s_next_psn++ & IPS_PSN_MASK; qp->s_len -= len; - bth0 |= qp->s_state << 24; - - spin_unlock_irqrestore(&qp->s_lock, flags); - - /* Construct the header. */ - extra_bytes = (4 - len) & 3; - nwords = (len + extra_bytes) >> 2; - if (unlikely(qp->remote_ah_attr.ah_flags & IB_AH_GRH)) { - /* Header size in 32-bit words. */ - hwords += 10; - lrh0 = IPS_LRH_GRH; - qp->s_hdr.u.l.grh.version_tclass_flow = - cpu_to_be32((6 << 28) | - (qp->remote_ah_attr.grh.traffic_class - << 20) | - qp->remote_ah_attr.grh.flow_label); - qp->s_hdr.u.l.grh.paylen = - cpu_to_be16(((hwords - 12) + nwords + - SIZE_OF_CRC) << 2); - /* next_hdr is defined by C8-7 in ch. 8.4.1 */ - qp->s_hdr.u.l.grh.next_hdr = 0x1B; - qp->s_hdr.u.l.grh.hop_limit = - qp->remote_ah_attr.grh.hop_limit; - /* The SGID is 32-bit aligned. */ - qp->s_hdr.u.l.grh.sgid.global.subnet_prefix = - dev->gid_prefix; - qp->s_hdr.u.l.grh.sgid.global.interface_id = - ipath_layer_get_guid(dev->dd); - qp->s_hdr.u.l.grh.dgid = qp->remote_ah_attr.grh.dgid; - } qp->s_hdrwords = hwords; qp->s_cur_sge = &qp->s_sge; qp->s_cur_size = len; - lrh0 |= qp->remote_ah_attr.sl << 4; - qp->s_hdr.lrh[0] = cpu_to_be16(lrh0); - /* DEST LID */ - qp->s_hdr.lrh[1] = cpu_to_be16(qp->remote_ah_attr.dlid); - qp->s_hdr.lrh[2] = cpu_to_be16(hwords + nwords + SIZE_OF_CRC); - qp->s_hdr.lrh[3] = cpu_to_be16(ipath_layer_get_lid(dev->dd)); - bth0 |= extra_bytes << 20; - ohdr->bth[0] = cpu_to_be32(bth0); - ohdr->bth[1] = cpu_to_be32(qp->remote_qpn); - ohdr->bth[2] = cpu_to_be32(bth2); - - /* Check for more work to do. */ - goto again; + *bth0p = bth0 | (qp->s_state << 24); + *bth2p = qp->s_next_psn++ & IPATH_PSN_MASK; + return 1; done: - spin_unlock_irqrestore(&qp->s_lock, flags); - clear_bit(IPATH_S_BUSY, &qp->s_flags); - -bail: - return; + return 0; } /** @@ -335,12 +241,15 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, u32 hdrsize; u32 psn; u32 pad; - unsigned long flags; struct ib_wc wc; u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu); struct ib_reth *reth; int header_in_data; + /* Validate the SLID. See Ch. 9.6.1.5 */ + if (unlikely(be16_to_cpu(hdr->lrh[3]) != qp->remote_ah_attr.dlid)) + goto done; + /* Check for GRH */ if (!has_grh) { ohdr = &hdr->u.oth; @@ -356,8 +265,7 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, * size to 56 bytes so the last 4 bytes of * the BTH header (PSN) is in the data buffer. */ - header_in_data = - ipath_layer_get_rcvhdrentsize(dev->dd) == 16; + header_in_data = dev->dd->ipath_rcvhdrentsize == 16; if (header_in_data) { psn = be32_to_cpu(((__be32 *) data)[0]); data += sizeof(__be32); @@ -373,8 +281,6 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, wc.imm_data = 0; wc.wc_flags = 0; - spin_lock_irqsave(&qp->r_rq.lock, flags); - /* Compare the PSN verses the expected PSN. */ if (unlikely(ipath_cmp24(psn, qp->r_psn) != 0)) { /* @@ -535,12 +441,13 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, if (qp->r_len != 0) { u32 rkey = be32_to_cpu(reth->rkey); u64 vaddr = be64_to_cpu(reth->vaddr); + int ok; /* Check rkey */ - if (unlikely(!ipath_rkey_ok( - dev, &qp->r_sge, qp->r_len, - vaddr, rkey, - IB_ACCESS_REMOTE_WRITE))) { + ok = ipath_rkey_ok(qp, &qp->r_sge, qp->r_len, + vaddr, rkey, + IB_ACCESS_REMOTE_WRITE); + if (unlikely(!ok)) { dev->n_pkt_drops++; goto done; } @@ -558,8 +465,7 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, } if (opcode == OP(RDMA_WRITE_ONLY)) goto rdma_last; - else if (opcode == - OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE)) + else if (opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE)) goto rdma_last_imm; /* FALLTHROUGH */ case OP(RDMA_WRITE_MIDDLE): @@ -592,9 +498,9 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, dev->n_pkt_drops++; goto done; } - if (qp->r_reuse_sge) { + if (qp->r_reuse_sge) qp->r_reuse_sge = 0; - } else if (!ipath_get_rwqe(qp, 1)) { + else if (!ipath_get_rwqe(qp, 1)) { dev->n_pkt_drops++; goto done; } @@ -631,15 +537,11 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, default: /* Drop packet for unknown opcodes. */ - spin_unlock_irqrestore(&qp->r_rq.lock, flags); dev->n_pkt_drops++; - goto bail; + goto done; } qp->r_psn++; qp->r_state = opcode; done: - spin_unlock_irqrestore(&qp->r_rq.lock, flags); - -bail: return; } diff --git a/drivers/infiniband/hw/ipath/ipath_ud.c b/drivers/infiniband/hw/ipath/ipath_ud.c index e606daf83210..49f1102af8b3 100644 --- a/drivers/infiniband/hw/ipath/ipath_ud.c +++ b/drivers/infiniband/hw/ipath/ipath_ud.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -33,7 +34,52 @@ #include <rdma/ib_smi.h> #include "ipath_verbs.h" -#include "ips_common.h" +#include "ipath_kernel.h" + +static int init_sge(struct ipath_qp *qp, struct ipath_rwqe *wqe, + u32 *lengthp, struct ipath_sge_state *ss) +{ + int user = to_ipd(qp->ibqp.pd)->user; + int i, j, ret; + struct ib_wc wc; + + *lengthp = 0; + for (i = j = 0; i < wqe->num_sge; i++) { + if (wqe->sg_list[i].length == 0) + continue; + /* Check LKEY */ + if ((user && wqe->sg_list[i].lkey == 0) || + !ipath_lkey_ok(qp, j ? &ss->sg_list[j - 1] : &ss->sge, + &wqe->sg_list[i], IB_ACCESS_LOCAL_WRITE)) + goto bad_lkey; + *lengthp += wqe->sg_list[i].length; + j++; + } + ss->num_sge = j; + ret = 1; + goto bail; + +bad_lkey: + wc.wr_id = wqe->wr_id; + wc.status = IB_WC_LOC_PROT_ERR; + wc.opcode = IB_WC_RECV; + wc.vendor_err = 0; + wc.byte_len = 0; + wc.imm_data = 0; + wc.qp_num = qp->ibqp.qp_num; + wc.src_qp = 0; + wc.wc_flags = 0; + wc.pkey_index = 0; + wc.slid = 0; + wc.sl = 0; + wc.dlid_path_bits = 0; + wc.port_num = 0; + /* Signal solicited completion event. */ + ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, 1); + ret = 0; +bail: + return ret; +} /** * ipath_ud_loopback - handle send on loopback QPs @@ -45,6 +91,8 @@ * * This is called from ipath_post_ud_send() to forward a WQE addressed * to the same HCA. + * Note that the receive interrupt handler may be calling ipath_ud_rcv() + * while this is being called. */ static void ipath_ud_loopback(struct ipath_qp *sqp, struct ipath_sge_state *ss, @@ -59,7 +107,11 @@ static void ipath_ud_loopback(struct ipath_qp *sqp, struct ipath_srq *srq; struct ipath_sge_state rsge; struct ipath_sge *sge; + struct ipath_rwq *wq; struct ipath_rwqe *wqe; + void (*handler)(struct ib_event *, void *); + u32 tail; + u32 rlen; qp = ipath_lookup_qpn(&dev->qp_table, wr->wr.ud.remote_qpn); if (!qp) @@ -93,6 +145,13 @@ static void ipath_ud_loopback(struct ipath_qp *sqp, wc->imm_data = 0; } + if (wr->num_sge > 1) { + rsge.sg_list = kmalloc((wr->num_sge - 1) * + sizeof(struct ipath_sge), + GFP_ATOMIC); + } else + rsge.sg_list = NULL; + /* * Get the next work request entry to find where to put the data. * Note that it is safe to drop the lock after changing rq->tail @@ -100,37 +159,52 @@ static void ipath_ud_loopback(struct ipath_qp *sqp, */ if (qp->ibqp.srq) { srq = to_isrq(qp->ibqp.srq); + handler = srq->ibsrq.event_handler; rq = &srq->rq; } else { srq = NULL; + handler = NULL; rq = &qp->r_rq; } + spin_lock_irqsave(&rq->lock, flags); - if (rq->tail == rq->head) { - spin_unlock_irqrestore(&rq->lock, flags); - dev->n_pkt_drops++; - goto done; + wq = rq->wq; + tail = wq->tail; + while (1) { + if (unlikely(tail == wq->head)) { + spin_unlock_irqrestore(&rq->lock, flags); + dev->n_pkt_drops++; + goto bail_sge; + } + wqe = get_rwqe_ptr(rq, tail); + if (++tail >= rq->size) + tail = 0; + if (init_sge(qp, wqe, &rlen, &rsge)) + break; + wq->tail = tail; } /* Silently drop packets which are too big. */ - wqe = get_rwqe_ptr(rq, rq->tail); - if (wc->byte_len > wqe->length) { + if (wc->byte_len > rlen) { spin_unlock_irqrestore(&rq->lock, flags); dev->n_pkt_drops++; - goto done; + goto bail_sge; } + wq->tail = tail; wc->wr_id = wqe->wr_id; - rsge.sge = wqe->sg_list[0]; - rsge.sg_list = wqe->sg_list + 1; - rsge.num_sge = wqe->num_sge; - if (++rq->tail >= rq->size) - rq->tail = 0; - if (srq && srq->ibsrq.event_handler) { + if (handler) { u32 n; - if (rq->head < rq->tail) - n = rq->size + rq->head - rq->tail; + /* + * validate head pointer value and compute + * the number of remaining WQEs. + */ + n = wq->head; + if (n >= rq->size) + n = 0; + if (n < tail) + n += rq->size - tail; else - n = rq->head - rq->tail; + n -= tail; if (n < srq->limit) { struct ib_event ev; @@ -139,12 +213,12 @@ static void ipath_ud_loopback(struct ipath_qp *sqp, ev.device = qp->ibqp.device; ev.element.srq = qp->ibqp.srq; ev.event = IB_EVENT_SRQ_LIMIT_REACHED; - srq->ibsrq.event_handler(&ev, - srq->ibsrq.srq_context); + handler(&ev, srq->ibsrq.srq_context); } else spin_unlock_irqrestore(&rq->lock, flags); } else spin_unlock_irqrestore(&rq->lock, flags); + ah_attr = &to_iah(wr->wr.ud.ah)->attr; if (ah_attr->ah_flags & IB_AH_GRH) { ipath_copy_sge(&rsge, &ah_attr->grh, sizeof(struct ib_grh)); @@ -185,7 +259,7 @@ static void ipath_ud_loopback(struct ipath_qp *sqp, wc->src_qp = sqp->ibqp.qp_num; /* XXX do we know which pkey matched? Only needed for GSI. */ wc->pkey_index = 0; - wc->slid = ipath_layer_get_lid(dev->dd) | + wc->slid = dev->dd->ipath_lid | (ah_attr->src_path_bits & ((1 << (dev->mkeyprot_resv_lmc & 7)) - 1)); wc->sl = ah_attr->sl; @@ -195,6 +269,8 @@ static void ipath_ud_loopback(struct ipath_qp *sqp, ipath_cq_enter(to_icq(qp->ibqp.recv_cq), wc, wr->send_flags & IB_SEND_SOLICITED); +bail_sge: + kfree(rsge.sg_list); done: if (atomic_dec_and_test(&qp->refcount)) wake_up(&qp->wait); @@ -265,7 +341,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr) if (wr->sg_list[i].length == 0) continue; - if (!ipath_lkey_ok(&dev->lk_table, ss.num_sge ? + if (!ipath_lkey_ok(qp, ss.num_sge ? sg_list + ss.num_sge - 1 : &ss.sge, &wr->sg_list[i], 0)) { ret = -EINVAL; @@ -274,6 +350,11 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr) len += wr->sg_list[i].length; ss.num_sge++; } + /* Check for invalid packet size. */ + if (len > dev->dd->ipath_ibmtu) { + ret = -EINVAL; + goto bail; + } extra_bytes = (4 - len) & 3; nwords = (len + extra_bytes) >> 2; @@ -283,8 +364,8 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr) ret = -EINVAL; goto bail; } - if (ah_attr->dlid >= IPS_MULTICAST_LID_BASE) { - if (ah_attr->dlid != IPS_PERMISSIVE_LID) + if (ah_attr->dlid >= IPATH_MULTICAST_LID_BASE) { + if (ah_attr->dlid != IPATH_PERMISSIVE_LID) dev->n_multicast_xmit++; else dev->n_unicast_xmit++; @@ -292,7 +373,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr) dev->n_unicast_xmit++; lid = ah_attr->dlid & ~((1 << (dev->mkeyprot_resv_lmc & 7)) - 1); - if (unlikely(lid == ipath_layer_get_lid(dev->dd))) { + if (unlikely(lid == dev->dd->ipath_lid)) { /* * Pass in an uninitialized ib_wc to save stack * space. @@ -304,7 +385,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr) if (ah_attr->ah_flags & IB_AH_GRH) { /* Header size in 32-bit words. */ hwords = 17; - lrh0 = IPS_LRH_GRH; + lrh0 = IPATH_LRH_GRH; ohdr = &qp->s_hdr.u.l.oth; qp->s_hdr.u.l.grh.version_tclass_flow = cpu_to_be32((6 << 28) | @@ -321,7 +402,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr) qp->s_hdr.u.l.grh.sgid.global.subnet_prefix = dev->gid_prefix; qp->s_hdr.u.l.grh.sgid.global.interface_id = - ipath_layer_get_guid(dev->dd); + dev->dd->ipath_guid; qp->s_hdr.u.l.grh.dgid = ah_attr->grh.dgid; /* * Don't worry about sending to locally attached multicast @@ -330,7 +411,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr) } else { /* Header size in 32-bit words. */ hwords = 7; - lrh0 = IPS_LRH_BTH; + lrh0 = IPATH_LRH_BTH; ohdr = &qp->s_hdr.u.oth; } if (wr->opcode == IB_WR_SEND_WITH_IMM) { @@ -351,7 +432,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr) qp->s_hdr.lrh[0] = cpu_to_be16(lrh0); qp->s_hdr.lrh[1] = cpu_to_be16(ah_attr->dlid); /* DEST LID */ qp->s_hdr.lrh[2] = cpu_to_be16(hwords + nwords + SIZE_OF_CRC); - lid = ipath_layer_get_lid(dev->dd); + lid = dev->dd->ipath_lid; if (lid) { lid |= ah_attr->src_path_bits & ((1 << (dev->mkeyprot_resv_lmc & 7)) - 1); @@ -361,18 +442,18 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr) if (wr->send_flags & IB_SEND_SOLICITED) bth0 |= 1 << 23; bth0 |= extra_bytes << 20; - bth0 |= qp->ibqp.qp_type == IB_QPT_SMI ? IPS_DEFAULT_P_KEY : - ipath_layer_get_pkey(dev->dd, qp->s_pkey_index); + bth0 |= qp->ibqp.qp_type == IB_QPT_SMI ? IPATH_DEFAULT_P_KEY : + ipath_get_pkey(dev->dd, qp->s_pkey_index); ohdr->bth[0] = cpu_to_be32(bth0); /* * Use the multicast QP if the destination LID is a multicast LID. */ - ohdr->bth[1] = ah_attr->dlid >= IPS_MULTICAST_LID_BASE && - ah_attr->dlid != IPS_PERMISSIVE_LID ? - __constant_cpu_to_be32(IPS_MULTICAST_QPN) : + ohdr->bth[1] = ah_attr->dlid >= IPATH_MULTICAST_LID_BASE && + ah_attr->dlid != IPATH_PERMISSIVE_LID ? + __constant_cpu_to_be32(IPATH_MULTICAST_QPN) : cpu_to_be32(wr->wr.ud.remote_qpn); /* XXX Could lose a PSN count but not worth locking */ - ohdr->bth[2] = cpu_to_be32(qp->s_next_psn++ & IPS_PSN_MASK); + ohdr->bth[2] = cpu_to_be32(qp->s_next_psn++ & IPATH_PSN_MASK); /* * Qkeys with the high order bit set mean use the * qkey from the QP context instead of the WR (see 10.2.5). @@ -427,13 +508,9 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, int opcode; u32 hdrsize; u32 pad; - unsigned long flags; struct ib_wc wc; u32 qkey; u32 src_qp; - struct ipath_rq *rq; - struct ipath_srq *srq; - struct ipath_rwqe *wqe; u16 dlid; int header_in_data; @@ -452,8 +529,7 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, * the eager header buffer size to 56 bytes so the last 12 * bytes of the IB header is in the data buffer. */ - header_in_data = - ipath_layer_get_rcvhdrentsize(dev->dd) == 16; + header_in_data = dev->dd->ipath_rcvhdrentsize == 16; if (header_in_data) { qkey = be32_to_cpu(((__be32 *) data)[1]); src_qp = be32_to_cpu(((__be32 *) data)[2]); @@ -463,7 +539,7 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, src_qp = be32_to_cpu(ohdr->u.ud.deth[1]); } } - src_qp &= IPS_QPN_MASK; + src_qp &= IPATH_QPN_MASK; /* * Check that the permissive LID is only used on QP0 @@ -541,56 +617,28 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, /* * Get the next work request entry to find where to put the data. - * Note that it is safe to drop the lock after changing rq->tail - * since ipath_post_receive() won't fill the empty slot. */ - if (qp->ibqp.srq) { - srq = to_isrq(qp->ibqp.srq); - rq = &srq->rq; - } else { - srq = NULL; - rq = &qp->r_rq; - } - spin_lock_irqsave(&rq->lock, flags); - if (rq->tail == rq->head) { - spin_unlock_irqrestore(&rq->lock, flags); - dev->n_pkt_drops++; + if (qp->r_reuse_sge) + qp->r_reuse_sge = 0; + else if (!ipath_get_rwqe(qp, 0)) { + /* + * Count VL15 packets dropped due to no receive buffer. + * Otherwise, count them as buffer overruns since usually, + * the HW will be able to receive packets even if there are + * no QPs with posted receive buffers. + */ + if (qp->ibqp.qp_num == 0) + dev->n_vl15_dropped++; + else + dev->rcv_errors++; goto bail; } /* Silently drop packets which are too big. */ - wqe = get_rwqe_ptr(rq, rq->tail); - if (wc.byte_len > wqe->length) { - spin_unlock_irqrestore(&rq->lock, flags); + if (wc.byte_len > qp->r_len) { + qp->r_reuse_sge = 1; dev->n_pkt_drops++; goto bail; } - wc.wr_id = wqe->wr_id; - qp->r_sge.sge = wqe->sg_list[0]; - qp->r_sge.sg_list = wqe->sg_list + 1; - qp->r_sge.num_sge = wqe->num_sge; - if (++rq->tail >= rq->size) - rq->tail = 0; - if (srq && srq->ibsrq.event_handler) { - u32 n; - - if (rq->head < rq->tail) - n = rq->size + rq->head - rq->tail; - else - n = rq->head - rq->tail; - if (n < srq->limit) { - struct ib_event ev; - - srq->limit = 0; - spin_unlock_irqrestore(&rq->lock, flags); - ev.device = qp->ibqp.device; - ev.element.srq = qp->ibqp.srq; - ev.event = IB_EVENT_SRQ_LIMIT_REACHED; - srq->ibsrq.event_handler(&ev, - srq->ibsrq.srq_context); - } else - spin_unlock_irqrestore(&rq->lock, flags); - } else - spin_unlock_irqrestore(&rq->lock, flags); if (has_grh) { ipath_copy_sge(&qp->r_sge, &hdr->u.l.grh, sizeof(struct ib_grh)); @@ -599,6 +647,7 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, ipath_skip_sge(&qp->r_sge, sizeof(struct ib_grh)); ipath_copy_sge(&qp->r_sge, data, wc.byte_len - sizeof(struct ib_grh)); + wc.wr_id = qp->r_wr_id; wc.status = IB_WC_SUCCESS; wc.opcode = IB_WC_RECV; wc.vendor_err = 0; @@ -612,7 +661,7 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, /* * Save the LMC lower bits if the destination LID is a unicast LID. */ - wc.dlid_path_bits = dlid >= IPS_MULTICAST_LID_BASE ? 0 : + wc.dlid_path_bits = dlid >= IPATH_MULTICAST_LID_BASE ? 0 : dlid & ((1 << (dev->mkeyprot_resv_lmc & 7)) - 1); /* Signal completion event if the solicited bit is set. */ ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, diff --git a/drivers/infiniband/hw/ipath/ipath_user_pages.c b/drivers/infiniband/hw/ipath/ipath_user_pages.c index 2bb08afc86d0..413754b1d8a2 100644 --- a/drivers/infiniband/hw/ipath/ipath_user_pages.c +++ b/drivers/infiniband/hw/ipath/ipath_user_pages.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -57,17 +58,6 @@ static int __get_user_pages(unsigned long start_page, size_t num_pages, size_t got; int ret; -#if 0 - /* - * XXX - causes MPI programs to fail, haven't had time to check - * yet - */ - if (!capable(CAP_IPC_LOCK)) { - ret = -EPERM; - goto bail; - } -#endif - lock_limit = current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur >> PAGE_SHIFT; @@ -100,6 +90,62 @@ bail: } /** + * ipath_map_page - a safety wrapper around pci_map_page() + * + * A dma_addr of all 0's is interpreted by the chip as "disabled". + * Unfortunately, it can also be a valid dma_addr returned on some + * architectures. + * + * The powerpc iommu assigns dma_addrs in ascending order, so we don't + * have to bother with retries or mapping a dummy page to insure we + * don't just get the same mapping again. + * + * I'm sure we won't be so lucky with other iommu's, so FIXME. + */ +dma_addr_t ipath_map_page(struct pci_dev *hwdev, struct page *page, + unsigned long offset, size_t size, int direction) +{ + dma_addr_t phys; + + phys = pci_map_page(hwdev, page, offset, size, direction); + + if (phys == 0) { + pci_unmap_page(hwdev, phys, size, direction); + phys = pci_map_page(hwdev, page, offset, size, direction); + /* + * FIXME: If we get 0 again, we should keep this page, + * map another, then free the 0 page. + */ + } + + return phys; +} + +/** + * ipath_map_single - a safety wrapper around pci_map_single() + * + * Same idea as ipath_map_page(). + */ +dma_addr_t ipath_map_single(struct pci_dev *hwdev, void *ptr, size_t size, + int direction) +{ + dma_addr_t phys; + + phys = pci_map_single(hwdev, ptr, size, direction); + + if (phys == 0) { + pci_unmap_single(hwdev, phys, size, direction); + phys = pci_map_single(hwdev, ptr, size, direction); + /* + * FIXME: If we get 0 again, we should keep this page, + * map another, then free the 0 page. + */ + } + + return phys; +} + +/** * ipath_get_user_pages - lock user pages into memory * @start_page: the start page * @num_pages: the number of pages diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c index 28fdbdaa789d..42eaed88c281 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.c +++ b/drivers/infiniband/hw/ipath/ipath_verbs.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -32,14 +33,12 @@ #include <rdma/ib_mad.h> #include <rdma/ib_user_verbs.h> +#include <linux/io.h> #include <linux/utsname.h> #include "ipath_kernel.h" #include "ipath_verbs.h" -#include "ips_common.h" - -/* Not static, because we don't want the compiler removing it */ -const char ipath_verbs_version[] = "ipath_verbs " IPATH_IDSTR; +#include "ipath_common.h" static unsigned int ib_ipath_qp_table_size = 251; module_param_named(qp_table_size, ib_ipath_qp_table_size, uint, S_IRUGO); @@ -51,13 +50,66 @@ module_param_named(lkey_table_size, ib_ipath_lkey_table_size, uint, MODULE_PARM_DESC(lkey_table_size, "LKEY table size in bits (2^n, 1 <= n <= 23)"); -unsigned int ib_ipath_debug; /* debug mask */ -module_param_named(debug, ib_ipath_debug, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(debug, "Verbs debug mask"); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("PathScale <support@pathscale.com>"); -MODULE_DESCRIPTION("Pathscale InfiniPath driver"); +static unsigned int ib_ipath_max_pds = 0xFFFF; +module_param_named(max_pds, ib_ipath_max_pds, uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_pds, + "Maximum number of protection domains to support"); + +static unsigned int ib_ipath_max_ahs = 0xFFFF; +module_param_named(max_ahs, ib_ipath_max_ahs, uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_ahs, "Maximum number of address handles to support"); + +unsigned int ib_ipath_max_cqes = 0x2FFFF; +module_param_named(max_cqes, ib_ipath_max_cqes, uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_cqes, + "Maximum number of completion queue entries to support"); + +unsigned int ib_ipath_max_cqs = 0x1FFFF; +module_param_named(max_cqs, ib_ipath_max_cqs, uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_cqs, "Maximum number of completion queues to support"); + +unsigned int ib_ipath_max_qp_wrs = 0x3FFF; +module_param_named(max_qp_wrs, ib_ipath_max_qp_wrs, uint, + S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_qp_wrs, "Maximum number of QP WRs to support"); + +unsigned int ib_ipath_max_qps = 16384; +module_param_named(max_qps, ib_ipath_max_qps, uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_qps, "Maximum number of QPs to support"); + +unsigned int ib_ipath_max_sges = 0x60; +module_param_named(max_sges, ib_ipath_max_sges, uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_sges, "Maximum number of SGEs to support"); + +unsigned int ib_ipath_max_mcast_grps = 16384; +module_param_named(max_mcast_grps, ib_ipath_max_mcast_grps, uint, + S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_mcast_grps, + "Maximum number of multicast groups to support"); + +unsigned int ib_ipath_max_mcast_qp_attached = 16; +module_param_named(max_mcast_qp_attached, ib_ipath_max_mcast_qp_attached, + uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_mcast_qp_attached, + "Maximum number of attached QPs to support"); + +unsigned int ib_ipath_max_srqs = 1024; +module_param_named(max_srqs, ib_ipath_max_srqs, uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_srqs, "Maximum number of SRQs to support"); + +unsigned int ib_ipath_max_srq_sges = 128; +module_param_named(max_srq_sges, ib_ipath_max_srq_sges, + uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_srq_sges, "Maximum number of SRQ SGEs to support"); + +unsigned int ib_ipath_max_srq_wrs = 0x1FFFF; +module_param_named(max_srq_wrs, ib_ipath_max_srq_wrs, + uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_srq_wrs, "Maximum number of SRQ WRs support"); + +static unsigned int ib_ipath_disable_sma; +module_param_named(disable_sma, ib_ipath_disable_sma, uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(ib_ipath_disable_sma, "Disable the SMA"); const int ib_ipath_state_ops[IB_QPS_ERR + 1] = { [IB_QPS_RESET] = 0, @@ -71,6 +123,16 @@ const int ib_ipath_state_ops[IB_QPS_ERR + 1] = { [IB_QPS_ERR] = 0, }; +struct ipath_ucontext { + struct ib_ucontext ibucontext; +}; + +static inline struct ipath_ucontext *to_iucontext(struct ib_ucontext + *ibucontext) +{ + return container_of(ibucontext, struct ipath_ucontext, ibucontext); +} + /* * Translate ib_wr_opcode into ib_wc_opcode. */ @@ -137,10 +199,6 @@ void ipath_skip_sge(struct ipath_sge_state *ss, u32 length) { struct ipath_sge *sge = &ss->sge; - while (length > sge->sge_length) { - length -= sge->sge_length; - ss->sge = *ss->sg_list++; - } while (length) { u32 len = sge->length; @@ -193,7 +251,7 @@ static int ipath_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, switch (qp->ibqp.qp_type) { case IB_QPT_UC: case IB_QPT_RC: - err = ipath_post_rc_send(qp, wr); + err = ipath_post_ruc_send(qp, wr); break; case IB_QPT_SMI: @@ -227,11 +285,12 @@ static int ipath_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr, struct ib_recv_wr **bad_wr) { struct ipath_qp *qp = to_iqp(ibqp); + struct ipath_rwq *wq = qp->r_rq.wq; unsigned long flags; int ret; /* Check that state is OK to post receive. */ - if (!(ib_ipath_state_ops[qp->state] & IPATH_POST_RECV_OK)) { + if (!(ib_ipath_state_ops[qp->state] & IPATH_POST_RECV_OK) || !wq) { *bad_wr = wr; ret = -EINVAL; goto bail; @@ -240,59 +299,31 @@ static int ipath_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr, for (; wr; wr = wr->next) { struct ipath_rwqe *wqe; u32 next; - int i, j; + int i; - if (wr->num_sge > qp->r_rq.max_sge) { + if ((unsigned) wr->num_sge > qp->r_rq.max_sge) { *bad_wr = wr; ret = -ENOMEM; goto bail; } spin_lock_irqsave(&qp->r_rq.lock, flags); - next = qp->r_rq.head + 1; + next = wq->head + 1; if (next >= qp->r_rq.size) next = 0; - if (next == qp->r_rq.tail) { + if (next == wq->tail) { spin_unlock_irqrestore(&qp->r_rq.lock, flags); *bad_wr = wr; ret = -ENOMEM; goto bail; } - wqe = get_rwqe_ptr(&qp->r_rq, qp->r_rq.head); + wqe = get_rwqe_ptr(&qp->r_rq, wq->head); wqe->wr_id = wr->wr_id; - wqe->sg_list[0].mr = NULL; - wqe->sg_list[0].vaddr = NULL; - wqe->sg_list[0].length = 0; - wqe->sg_list[0].sge_length = 0; - wqe->length = 0; - for (i = 0, j = 0; i < wr->num_sge; i++) { - /* Check LKEY */ - if (to_ipd(qp->ibqp.pd)->user && - wr->sg_list[i].lkey == 0) { - spin_unlock_irqrestore(&qp->r_rq.lock, - flags); - *bad_wr = wr; - ret = -EINVAL; - goto bail; - } - if (wr->sg_list[i].length == 0) - continue; - if (!ipath_lkey_ok( - &to_idev(qp->ibqp.device)->lk_table, - &wqe->sg_list[j], &wr->sg_list[i], - IB_ACCESS_LOCAL_WRITE)) { - spin_unlock_irqrestore(&qp->r_rq.lock, - flags); - *bad_wr = wr; - ret = -EINVAL; - goto bail; - } - wqe->length += wr->sg_list[i].length; - j++; - } - wqe->num_sge = j; - qp->r_rq.head = next; + wqe->num_sge = wr->num_sge; + for (i = 0; i < wr->num_sge; i++) + wqe->sg_list[i] = wr->sg_list[i]; + wq->head = next; spin_unlock_irqrestore(&qp->r_rq.lock, flags); } ret = 0; @@ -327,6 +358,9 @@ static void ipath_qp_rcv(struct ipath_ibdev *dev, switch (qp->ibqp.qp_type) { case IB_QPT_SMI: case IB_QPT_GSI: + if (ib_ipath_disable_sma) + break; + /* FALLTHROUGH */ case IB_QPT_UD: ipath_ud_rcv(dev, hdr, has_grh, data, tlen, qp); break; @@ -345,7 +379,7 @@ static void ipath_qp_rcv(struct ipath_ibdev *dev, } /** - * ipath_ib_rcv - process and incoming packet + * ipath_ib_rcv - process an incoming packet * @arg: the device pointer * @rhdr: the header of the packet * @data: the packet data @@ -354,9 +388,9 @@ static void ipath_qp_rcv(struct ipath_ibdev *dev, * This is called from ipath_kreceive() to process an incoming packet at * interrupt level. Tlen is the length of the header + data + CRC in bytes. */ -static void ipath_ib_rcv(void *arg, void *rhdr, void *data, u32 tlen) +void ipath_ib_rcv(struct ipath_ibdev *dev, void *rhdr, void *data, + u32 tlen) { - struct ipath_ibdev *dev = (struct ipath_ibdev *) arg; struct ipath_ib_header *hdr = rhdr; struct ipath_other_headers *ohdr; struct ipath_qp *qp; @@ -375,9 +409,9 @@ static void ipath_ib_rcv(void *arg, void *rhdr, void *data, u32 tlen) /* Check for a valid destination LID (see ch. 7.11.1). */ lid = be16_to_cpu(hdr->lrh[1]); - if (lid < IPS_MULTICAST_LID_BASE) { + if (lid < IPATH_MULTICAST_LID_BASE) { lid &= ~((1 << (dev->mkeyprot_resv_lmc & 7)) - 1); - if (unlikely(lid != ipath_layer_get_lid(dev->dd))) { + if (unlikely(lid != dev->dd->ipath_lid)) { dev->rcv_errors++; goto bail; } @@ -385,9 +419,9 @@ static void ipath_ib_rcv(void *arg, void *rhdr, void *data, u32 tlen) /* Check for GRH */ lnh = be16_to_cpu(hdr->lrh[0]) & 3; - if (lnh == IPS_LRH_BTH) + if (lnh == IPATH_LRH_BTH) ohdr = &hdr->u.oth; - else if (lnh == IPS_LRH_GRH) + else if (lnh == IPATH_LRH_GRH) ohdr = &hdr->u.l.oth; else { dev->rcv_errors++; @@ -399,8 +433,8 @@ static void ipath_ib_rcv(void *arg, void *rhdr, void *data, u32 tlen) dev->opstats[opcode].n_packets++; /* Get the destination QP number. */ - qp_num = be32_to_cpu(ohdr->bth[1]) & IPS_QPN_MASK; - if (qp_num == IPS_MULTICAST_QPN) { + qp_num = be32_to_cpu(ohdr->bth[1]) & IPATH_QPN_MASK; + if (qp_num == IPATH_MULTICAST_QPN) { struct ipath_mcast *mcast; struct ipath_mcast_qp *p; @@ -411,7 +445,7 @@ static void ipath_ib_rcv(void *arg, void *rhdr, void *data, u32 tlen) } dev->n_multicast_rcv++; list_for_each_entry_rcu(p, &mcast->qp_list, list) - ipath_qp_rcv(dev, hdr, lnh == IPS_LRH_GRH, data, + ipath_qp_rcv(dev, hdr, lnh == IPATH_LRH_GRH, data, tlen, p->qp); /* * Notify ipath_multicast_detach() if it is waiting for us @@ -423,7 +457,7 @@ static void ipath_ib_rcv(void *arg, void *rhdr, void *data, u32 tlen) qp = ipath_lookup_qpn(&dev->qp_table, qp_num); if (qp) { dev->n_unicast_rcv++; - ipath_qp_rcv(dev, hdr, lnh == IPS_LRH_GRH, data, + ipath_qp_rcv(dev, hdr, lnh == IPATH_LRH_GRH, data, tlen, qp); /* * Notify ipath_destroy_qp() if it is waiting @@ -445,9 +479,8 @@ bail:; * This is called from ipath_do_rcv_timer() at interrupt level to check for * QPs which need retransmits and to collect performance numbers. */ -static void ipath_ib_timer(void *arg) +void ipath_ib_timer(struct ipath_ibdev *dev) { - struct ipath_ibdev *dev = (struct ipath_ibdev *) arg; struct ipath_qp *resend = NULL; struct list_head *last; struct ipath_qp *qp; @@ -489,19 +522,19 @@ static void ipath_ib_timer(void *arg) if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_STARTED && --dev->pma_sample_start == 0) { dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_RUNNING; - ipath_layer_snapshot_counters(dev->dd, &dev->ipath_sword, - &dev->ipath_rword, - &dev->ipath_spkts, - &dev->ipath_rpkts, - &dev->ipath_xmit_wait); + ipath_snapshot_counters(dev->dd, &dev->ipath_sword, + &dev->ipath_rword, + &dev->ipath_spkts, + &dev->ipath_rpkts, + &dev->ipath_xmit_wait); } if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_RUNNING) { if (dev->pma_sample_interval == 0) { u64 ta, tb, tc, td, te; dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_DONE; - ipath_layer_snapshot_counters(dev->dd, &ta, &tb, - &tc, &td, &te); + ipath_snapshot_counters(dev->dd, &ta, &tb, + &tc, &td, &te); dev->ipath_sword = ta - dev->ipath_sword; dev->ipath_rword = tb - dev->ipath_rword; @@ -531,6 +564,365 @@ static void ipath_ib_timer(void *arg) } } +static void update_sge(struct ipath_sge_state *ss, u32 length) +{ + struct ipath_sge *sge = &ss->sge; + + sge->vaddr += length; + sge->length -= length; + sge->sge_length -= length; + if (sge->sge_length == 0) { + if (--ss->num_sge) + *sge = *ss->sg_list++; + } else if (sge->length == 0 && sge->mr != NULL) { + if (++sge->n >= IPATH_SEGSZ) { + if (++sge->m >= sge->mr->mapsz) + return; + sge->n = 0; + } + sge->vaddr = sge->mr->map[sge->m]->segs[sge->n].vaddr; + sge->length = sge->mr->map[sge->m]->segs[sge->n].length; + } +} + +#ifdef __LITTLE_ENDIAN +static inline u32 get_upper_bits(u32 data, u32 shift) +{ + return data >> shift; +} + +static inline u32 set_upper_bits(u32 data, u32 shift) +{ + return data << shift; +} + +static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off) +{ + data <<= ((sizeof(u32) - n) * BITS_PER_BYTE); + data >>= ((sizeof(u32) - n - off) * BITS_PER_BYTE); + return data; +} +#else +static inline u32 get_upper_bits(u32 data, u32 shift) +{ + return data << shift; +} + +static inline u32 set_upper_bits(u32 data, u32 shift) +{ + return data >> shift; +} + +static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off) +{ + data >>= ((sizeof(u32) - n) * BITS_PER_BYTE); + data <<= ((sizeof(u32) - n - off) * BITS_PER_BYTE); + return data; +} +#endif + +static void copy_io(u32 __iomem *piobuf, struct ipath_sge_state *ss, + u32 length) +{ + u32 extra = 0; + u32 data = 0; + u32 last; + + while (1) { + u32 len = ss->sge.length; + u32 off; + + BUG_ON(len == 0); + if (len > length) + len = length; + if (len > ss->sge.sge_length) + len = ss->sge.sge_length; + /* If the source address is not aligned, try to align it. */ + off = (unsigned long)ss->sge.vaddr & (sizeof(u32) - 1); + if (off) { + u32 *addr = (u32 *)((unsigned long)ss->sge.vaddr & + ~(sizeof(u32) - 1)); + u32 v = get_upper_bits(*addr, off * BITS_PER_BYTE); + u32 y; + + y = sizeof(u32) - off; + if (len > y) + len = y; + if (len + extra >= sizeof(u32)) { + data |= set_upper_bits(v, extra * + BITS_PER_BYTE); + len = sizeof(u32) - extra; + if (len == length) { + last = data; + break; + } + __raw_writel(data, piobuf); + piobuf++; + extra = 0; + data = 0; + } else { + /* Clear unused upper bytes */ + data |= clear_upper_bytes(v, len, extra); + if (len == length) { + last = data; + break; + } + extra += len; + } + } else if (extra) { + /* Source address is aligned. */ + u32 *addr = (u32 *) ss->sge.vaddr; + int shift = extra * BITS_PER_BYTE; + int ushift = 32 - shift; + u32 l = len; + + while (l >= sizeof(u32)) { + u32 v = *addr; + + data |= set_upper_bits(v, shift); + __raw_writel(data, piobuf); + data = get_upper_bits(v, ushift); + piobuf++; + addr++; + l -= sizeof(u32); + } + /* + * We still have 'extra' number of bytes leftover. + */ + if (l) { + u32 v = *addr; + + if (l + extra >= sizeof(u32)) { + data |= set_upper_bits(v, shift); + len -= l + extra - sizeof(u32); + if (len == length) { + last = data; + break; + } + __raw_writel(data, piobuf); + piobuf++; + extra = 0; + data = 0; + } else { + /* Clear unused upper bytes */ + data |= clear_upper_bytes(v, l, + extra); + if (len == length) { + last = data; + break; + } + extra += l; + } + } else if (len == length) { + last = data; + break; + } + } else if (len == length) { + u32 w; + + /* + * Need to round up for the last dword in the + * packet. + */ + w = (len + 3) >> 2; + __iowrite32_copy(piobuf, ss->sge.vaddr, w - 1); + piobuf += w - 1; + last = ((u32 *) ss->sge.vaddr)[w - 1]; + break; + } else { + u32 w = len >> 2; + + __iowrite32_copy(piobuf, ss->sge.vaddr, w); + piobuf += w; + + extra = len & (sizeof(u32) - 1); + if (extra) { + u32 v = ((u32 *) ss->sge.vaddr)[w]; + + /* Clear unused upper bytes */ + data = clear_upper_bytes(v, extra, 0); + } + } + update_sge(ss, len); + length -= len; + } + /* Update address before sending packet. */ + update_sge(ss, length); + /* must flush early everything before trigger word */ + ipath_flush_wc(); + __raw_writel(last, piobuf); + /* be sure trigger word is written */ + ipath_flush_wc(); +} + +/** + * ipath_verbs_send - send a packet + * @dd: the infinipath device + * @hdrwords: the number of words in the header + * @hdr: the packet header + * @len: the length of the packet in bytes + * @ss: the SGE to send + */ +int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords, + u32 *hdr, u32 len, struct ipath_sge_state *ss) +{ + u32 __iomem *piobuf; + u32 plen; + int ret; + + /* +1 is for the qword padding of pbc */ + plen = hdrwords + ((len + 3) >> 2) + 1; + if (unlikely((plen << 2) > dd->ipath_ibmaxlen)) { + ipath_dbg("packet len 0x%x too long, failing\n", plen); + ret = -EINVAL; + goto bail; + } + + /* Get a PIO buffer to use. */ + piobuf = ipath_getpiobuf(dd, NULL); + if (unlikely(piobuf == NULL)) { + ret = -EBUSY; + goto bail; + } + + /* + * Write len to control qword, no flags. + * We have to flush after the PBC for correctness on some cpus + * or WC buffer can be written out of order. + */ + writeq(plen, piobuf); + ipath_flush_wc(); + piobuf += 2; + if (len == 0) { + /* + * If there is just the header portion, must flush before + * writing last word of header for correctness, and after + * the last header word (trigger word). + */ + __iowrite32_copy(piobuf, hdr, hdrwords - 1); + ipath_flush_wc(); + __raw_writel(hdr[hdrwords - 1], piobuf + hdrwords - 1); + ipath_flush_wc(); + ret = 0; + goto bail; + } + + __iowrite32_copy(piobuf, hdr, hdrwords); + piobuf += hdrwords; + + /* The common case is aligned and contained in one segment. */ + if (likely(ss->num_sge == 1 && len <= ss->sge.length && + !((unsigned long)ss->sge.vaddr & (sizeof(u32) - 1)))) { + u32 w; + u32 *addr = (u32 *) ss->sge.vaddr; + + /* Update address before sending packet. */ + update_sge(ss, len); + /* Need to round up for the last dword in the packet. */ + w = (len + 3) >> 2; + __iowrite32_copy(piobuf, addr, w - 1); + /* must flush early everything before trigger word */ + ipath_flush_wc(); + __raw_writel(addr[w - 1], piobuf + w - 1); + /* be sure trigger word is written */ + ipath_flush_wc(); + ret = 0; + goto bail; + } + copy_io(piobuf, ss, len); + ret = 0; + +bail: + return ret; +} + +int ipath_snapshot_counters(struct ipath_devdata *dd, u64 *swords, + u64 *rwords, u64 *spkts, u64 *rpkts, + u64 *xmit_wait) +{ + int ret; + + if (!(dd->ipath_flags & IPATH_INITTED)) { + /* no hardware, freeze, etc. */ + ipath_dbg("unit %u not usable\n", dd->ipath_unit); + ret = -EINVAL; + goto bail; + } + *swords = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt); + *rwords = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt); + *spkts = ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktsendcnt); + *rpkts = ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktrcvcnt); + *xmit_wait = ipath_snap_cntr(dd, dd->ipath_cregs->cr_sendstallcnt); + + ret = 0; + +bail: + return ret; +} + +/** + * ipath_get_counters - get various chip counters + * @dd: the infinipath device + * @cntrs: counters are placed here + * + * Return the counters needed by recv_pma_get_portcounters(). + */ +int ipath_get_counters(struct ipath_devdata *dd, + struct ipath_verbs_counters *cntrs) +{ + int ret; + + if (!(dd->ipath_flags & IPATH_INITTED)) { + /* no hardware, freeze, etc. */ + ipath_dbg("unit %u not usable\n", dd->ipath_unit); + ret = -EINVAL; + goto bail; + } + cntrs->symbol_error_counter = + ipath_snap_cntr(dd, dd->ipath_cregs->cr_ibsymbolerrcnt); + cntrs->link_error_recovery_counter = + ipath_snap_cntr(dd, dd->ipath_cregs->cr_iblinkerrrecovcnt); + /* + * The link downed counter counts when the other side downs the + * connection. We add in the number of times we downed the link + * due to local link integrity errors to compensate. + */ + cntrs->link_downed_counter = + ipath_snap_cntr(dd, dd->ipath_cregs->cr_iblinkdowncnt); + cntrs->port_rcv_errors = + ipath_snap_cntr(dd, dd->ipath_cregs->cr_rxdroppktcnt) + + ipath_snap_cntr(dd, dd->ipath_cregs->cr_rcvovflcnt) + + ipath_snap_cntr(dd, dd->ipath_cregs->cr_portovflcnt) + + ipath_snap_cntr(dd, dd->ipath_cregs->cr_err_rlencnt) + + ipath_snap_cntr(dd, dd->ipath_cregs->cr_invalidrlencnt) + + ipath_snap_cntr(dd, dd->ipath_cregs->cr_erricrccnt) + + ipath_snap_cntr(dd, dd->ipath_cregs->cr_errvcrccnt) + + ipath_snap_cntr(dd, dd->ipath_cregs->cr_errlpcrccnt) + + ipath_snap_cntr(dd, dd->ipath_cregs->cr_badformatcnt) + + dd->ipath_rxfc_unsupvl_errs; + cntrs->port_rcv_remphys_errors = + ipath_snap_cntr(dd, dd->ipath_cregs->cr_rcvebpcnt); + cntrs->port_xmit_discards = + ipath_snap_cntr(dd, dd->ipath_cregs->cr_unsupvlcnt); + cntrs->port_xmit_data = + ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt); + cntrs->port_rcv_data = + ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt); + cntrs->port_xmit_packets = + ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktsendcnt); + cntrs->port_rcv_packets = + ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktrcvcnt); + cntrs->local_link_integrity_errors = + (dd->ipath_flags & IPATH_GPIO_ERRINTRS) ? + dd->ipath_lli_errs : dd->ipath_lli_errors; + cntrs->excessive_buffer_overrun_errors = dd->ipath_overrun_thresh_errs; + + ret = 0; + +bail: + return ret; +} + /** * ipath_ib_piobufavail - callback when a PIO buffer is available * @arg: the device pointer @@ -541,9 +933,8 @@ static void ipath_ib_timer(void *arg) * QPs waiting for buffers (for now, just do a tasklet_hi_schedule and * return zero). */ -static int ipath_ib_piobufavail(void *arg) +int ipath_ib_piobufavail(struct ipath_ibdev *dev) { - struct ipath_ibdev *dev = (struct ipath_ibdev *) arg; struct ipath_qp *qp; unsigned long flags; @@ -567,40 +958,39 @@ static int ipath_query_device(struct ib_device *ibdev, struct ib_device_attr *props) { struct ipath_ibdev *dev = to_idev(ibdev); - u32 vendor, boardrev, majrev, minrev; memset(props, 0, sizeof(*props)); props->device_cap_flags = IB_DEVICE_BAD_PKEY_CNTR | IB_DEVICE_BAD_QKEY_CNTR | IB_DEVICE_SHUTDOWN_PORT | IB_DEVICE_SYS_IMAGE_GUID; - ipath_layer_query_device(dev->dd, &vendor, &boardrev, - &majrev, &minrev); - props->vendor_id = vendor; - props->vendor_part_id = boardrev; - props->hw_ver = boardrev << 16 | majrev << 8 | minrev; + props->page_size_cap = PAGE_SIZE; + props->vendor_id = dev->dd->ipath_vendorid; + props->vendor_part_id = dev->dd->ipath_deviceid; + props->hw_ver = dev->dd->ipath_pcirev; props->sys_image_guid = dev->sys_image_guid; props->max_mr_size = ~0ull; - props->max_qp = 0xffff; - props->max_qp_wr = 0xffff; - props->max_sge = 255; - props->max_cq = 0xffff; - props->max_cqe = 0xffff; - props->max_mr = 0xffff; - props->max_pd = 0xffff; + props->max_qp = ib_ipath_max_qps; + props->max_qp_wr = ib_ipath_max_qp_wrs; + props->max_sge = ib_ipath_max_sges; + props->max_cq = ib_ipath_max_cqs; + props->max_ah = ib_ipath_max_ahs; + props->max_cqe = ib_ipath_max_cqes; + props->max_mr = dev->lk_table.max; + props->max_pd = ib_ipath_max_pds; props->max_qp_rd_atom = 1; props->max_qp_init_rd_atom = 1; /* props->max_res_rd_atom */ - props->max_srq = 0xffff; - props->max_srq_wr = 0xffff; - props->max_srq_sge = 255; + props->max_srq = ib_ipath_max_srqs; + props->max_srq_wr = ib_ipath_max_srq_wrs; + props->max_srq_sge = ib_ipath_max_srq_sges; /* props->local_ca_ack_delay */ props->atomic_cap = IB_ATOMIC_HCA; - props->max_pkeys = ipath_layer_get_npkeys(dev->dd); - props->max_mcast_grp = 0xffff; - props->max_mcast_qp_attach = 0xffff; + props->max_pkeys = ipath_get_npkeys(dev->dd); + props->max_mcast_grp = ib_ipath_max_mcast_grps; + props->max_mcast_qp_attach = ib_ipath_max_mcast_qp_attached; props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * props->max_mcast_grp; @@ -623,12 +1013,17 @@ const u8 ipath_cvt_physportstate[16] = { [INFINIPATH_IBCS_LT_STATE_RECOVERIDLE] = 6, }; +u32 ipath_get_cr_errpkey(struct ipath_devdata *dd) +{ + return ipath_read_creg32(dd, dd->ipath_cregs->cr_errpkey); +} + static int ipath_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) { struct ipath_ibdev *dev = to_idev(ibdev); enum ib_mtu mtu; - u16 lid = ipath_layer_get_lid(dev->dd); + u16 lid = dev->dd->ipath_lid; u64 ibcstat; memset(props, 0, sizeof(*props)); @@ -636,17 +1031,17 @@ static int ipath_query_port(struct ib_device *ibdev, props->lmc = dev->mkeyprot_resv_lmc & 7; props->sm_lid = dev->sm_lid; props->sm_sl = dev->sm_sl; - ibcstat = ipath_layer_get_lastibcstat(dev->dd); + ibcstat = dev->dd->ipath_lastibcstat; props->state = ((ibcstat >> 4) & 0x3) + 1; /* See phys_state_show() */ props->phys_state = ipath_cvt_physportstate[ - ipath_layer_get_lastibcstat(dev->dd) & 0xf]; + dev->dd->ipath_lastibcstat & 0xf]; props->port_cap_flags = dev->port_cap_flags; props->gid_tbl_len = 1; - props->max_msg_sz = 4096; - props->pkey_tbl_len = ipath_layer_get_npkeys(dev->dd); - props->bad_pkey_cntr = ipath_layer_get_cr_errpkey(dev->dd) - - dev->n_pkey_violations; + props->max_msg_sz = 0x80000000; + props->pkey_tbl_len = ipath_get_npkeys(dev->dd); + props->bad_pkey_cntr = ipath_get_cr_errpkey(dev->dd) - + dev->z_pkey_violations; props->qkey_viol_cntr = dev->qkey_violations; props->active_width = IB_WIDTH_4X; /* See rate_show() */ @@ -655,7 +1050,7 @@ static int ipath_query_port(struct ib_device *ibdev, props->init_type_reply = 0; props->max_mtu = IB_MTU_4096; - switch (ipath_layer_get_ibmtu(dev->dd)) { + switch (dev->dd->ipath_ibmtu) { case 4096: mtu = IB_MTU_4096; break; @@ -714,7 +1109,7 @@ static int ipath_modify_port(struct ib_device *ibdev, dev->port_cap_flags |= props->set_port_cap_mask; dev->port_cap_flags &= ~props->clr_port_cap_mask; if (port_modify_mask & IB_PORT_SHUTDOWN) - ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKDOWN); + ipath_set_linkstate(dev->dd, IPATH_IB_LINKDOWN); if (port_modify_mask & IB_PORT_RESET_QKEY_CNTR) dev->qkey_violations = 0; return 0; @@ -731,7 +1126,7 @@ static int ipath_query_gid(struct ib_device *ibdev, u8 port, goto bail; } gid->global.subnet_prefix = dev->gid_prefix; - gid->global.interface_id = ipath_layer_get_guid(dev->dd); + gid->global.interface_id = dev->dd->ipath_guid; ret = 0; @@ -743,15 +1138,34 @@ static struct ib_pd *ipath_alloc_pd(struct ib_device *ibdev, struct ib_ucontext *context, struct ib_udata *udata) { + struct ipath_ibdev *dev = to_idev(ibdev); struct ipath_pd *pd; struct ib_pd *ret; + /* + * This is actually totally arbitrary. Some correctness tests + * assume there's a maximum number of PDs that can be allocated. + * We don't actually have this limit, but we fail the test if + * we allow allocations of more than we report for this value. + */ + pd = kmalloc(sizeof *pd, GFP_KERNEL); if (!pd) { ret = ERR_PTR(-ENOMEM); goto bail; } + spin_lock(&dev->n_pds_lock); + if (dev->n_pds_allocated == ib_ipath_max_pds) { + spin_unlock(&dev->n_pds_lock); + kfree(pd); + ret = ERR_PTR(-ENOMEM); + goto bail; + } + + dev->n_pds_allocated++; + spin_unlock(&dev->n_pds_lock); + /* ib_alloc_pd() will initialize pd->ibpd. */ pd->user = udata != NULL; @@ -764,6 +1178,11 @@ bail: static int ipath_dealloc_pd(struct ib_pd *ibpd) { struct ipath_pd *pd = to_ipd(ibpd); + struct ipath_ibdev *dev = to_idev(ibpd->device); + + spin_lock(&dev->n_pds_lock); + dev->n_pds_allocated--; + spin_unlock(&dev->n_pds_lock); kfree(pd); @@ -782,21 +1201,45 @@ static struct ib_ah *ipath_create_ah(struct ib_pd *pd, { struct ipath_ah *ah; struct ib_ah *ret; + struct ipath_ibdev *dev = to_idev(pd->device); + unsigned long flags; /* A multicast address requires a GRH (see ch. 8.4.1). */ - if (ah_attr->dlid >= IPS_MULTICAST_LID_BASE && - ah_attr->dlid != IPS_PERMISSIVE_LID && + if (ah_attr->dlid >= IPATH_MULTICAST_LID_BASE && + ah_attr->dlid != IPATH_PERMISSIVE_LID && !(ah_attr->ah_flags & IB_AH_GRH)) { ret = ERR_PTR(-EINVAL); goto bail; } + if (ah_attr->dlid == 0) { + ret = ERR_PTR(-EINVAL); + goto bail; + } + + if (ah_attr->port_num < 1 || + ah_attr->port_num > pd->device->phys_port_cnt) { + ret = ERR_PTR(-EINVAL); + goto bail; + } + ah = kmalloc(sizeof *ah, GFP_ATOMIC); if (!ah) { ret = ERR_PTR(-ENOMEM); goto bail; } + spin_lock_irqsave(&dev->n_ahs_lock, flags); + if (dev->n_ahs_allocated == ib_ipath_max_ahs) { + spin_unlock_irqrestore(&dev->n_ahs_lock, flags); + kfree(ah); + ret = ERR_PTR(-ENOMEM); + goto bail; + } + + dev->n_ahs_allocated++; + spin_unlock_irqrestore(&dev->n_ahs_lock, flags); + /* ib_create_ah() will initialize ah->ibah. */ ah->attr = *ah_attr; @@ -814,7 +1257,13 @@ bail: */ static int ipath_destroy_ah(struct ib_ah *ibah) { + struct ipath_ibdev *dev = to_idev(ibah->device); struct ipath_ah *ah = to_iah(ibah); + unsigned long flags; + + spin_lock_irqsave(&dev->n_ahs_lock, flags); + dev->n_ahs_allocated--; + spin_unlock_irqrestore(&dev->n_ahs_lock, flags); kfree(ah); @@ -830,25 +1279,50 @@ static int ipath_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr) return 0; } +/** + * ipath_get_npkeys - return the size of the PKEY table for port 0 + * @dd: the infinipath device + */ +unsigned ipath_get_npkeys(struct ipath_devdata *dd) +{ + return ARRAY_SIZE(dd->ipath_pd[0]->port_pkeys); +} + +/** + * ipath_get_pkey - return the indexed PKEY from the port 0 PKEY table + * @dd: the infinipath device + * @index: the PKEY index + */ +unsigned ipath_get_pkey(struct ipath_devdata *dd, unsigned index) +{ + unsigned ret; + + if (index >= ARRAY_SIZE(dd->ipath_pd[0]->port_pkeys)) + ret = 0; + else + ret = dd->ipath_pd[0]->port_pkeys[index]; + + return ret; +} + static int ipath_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) { struct ipath_ibdev *dev = to_idev(ibdev); int ret; - if (index >= ipath_layer_get_npkeys(dev->dd)) { + if (index >= ipath_get_npkeys(dev->dd)) { ret = -EINVAL; goto bail; } - *pkey = ipath_layer_get_pkey(dev->dd, index); + *pkey = ipath_get_pkey(dev->dd, index); ret = 0; bail: return ret; } - /** * ipath_alloc_ucontext - allocate a ucontest * @ibdev: the infiniband device @@ -881,25 +1355,102 @@ static int ipath_dealloc_ucontext(struct ib_ucontext *context) static int ipath_verbs_register_sysfs(struct ib_device *dev); +static void __verbs_timer(unsigned long arg) +{ + struct ipath_devdata *dd = (struct ipath_devdata *) arg; + + /* + * If port 0 receive packet interrupts are not available, or + * can be missed, poll the receive queue + */ + if (dd->ipath_flags & IPATH_POLL_RX_INTR) + ipath_kreceive(dd); + + /* Handle verbs layer timeouts. */ + ipath_ib_timer(dd->verbs_dev); + + mod_timer(&dd->verbs_timer, jiffies + 1); +} + +static int enable_timer(struct ipath_devdata *dd) +{ + /* + * Early chips had a design flaw where the chip and kernel idea + * of the tail register don't always agree, and therefore we won't + * get an interrupt on the next packet received. + * If the board supports per packet receive interrupts, use it. + * Otherwise, the timer function periodically checks for packets + * to cover this case. + * Either way, the timer is needed for verbs layer related + * processing. + */ + if (dd->ipath_flags & IPATH_GPIO_INTR) { + u64 val; + ipath_write_kreg(dd, dd->ipath_kregs->kr_debugportselect, + 0x2074076542310ULL); + /* Enable GPIO bit 2 interrupt */ + val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_gpio_mask); + val |= (u64) (1 << IPATH_GPIO_PORT0_BIT); + ipath_write_kreg( dd, dd->ipath_kregs->kr_gpio_mask, val); + } + + init_timer(&dd->verbs_timer); + dd->verbs_timer.function = __verbs_timer; + dd->verbs_timer.data = (unsigned long)dd; + dd->verbs_timer.expires = jiffies + 1; + add_timer(&dd->verbs_timer); + + return 0; +} + +static int disable_timer(struct ipath_devdata *dd) +{ + /* Disable GPIO bit 2 interrupt */ + if (dd->ipath_flags & IPATH_GPIO_INTR) { + u64 val; + /* Disable GPIO bit 2 interrupt */ + val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_gpio_mask); + val &= ~((u64) (1 << IPATH_GPIO_PORT0_BIT)); + ipath_write_kreg( dd, dd->ipath_kregs->kr_gpio_mask, val); + /* + * We might want to undo changes to debugportselect, + * but how? + */ + } + + del_timer_sync(&dd->verbs_timer); + + return 0; +} + /** * ipath_register_ib_device - register our device with the infiniband core - * @unit: the device number to register * @dd: the device data structure * Return the allocated ipath_ibdev pointer or NULL on error. */ -static void *ipath_register_ib_device(int unit, struct ipath_devdata *dd) +int ipath_register_ib_device(struct ipath_devdata *dd) { + struct ipath_verbs_counters cntrs; struct ipath_ibdev *idev; struct ib_device *dev; int ret; idev = (struct ipath_ibdev *)ib_alloc_device(sizeof *idev); - if (idev == NULL) + if (idev == NULL) { + ret = -ENOMEM; goto bail; + } dev = &idev->ibdev; /* Only need to initialize non-zero fields. */ + spin_lock_init(&idev->n_pds_lock); + spin_lock_init(&idev->n_ahs_lock); + spin_lock_init(&idev->n_cqs_lock); + spin_lock_init(&idev->n_qps_lock); + spin_lock_init(&idev->n_srqs_lock); + spin_lock_init(&idev->n_mcast_grps_lock); + spin_lock_init(&idev->qp_table.lock); spin_lock_init(&idev->lk_table.lock); idev->sm_lid = __constant_be16_to_cpu(IB_LID_PERMISSIVE); @@ -939,20 +1490,39 @@ static void *ipath_register_ib_device(int unit, struct ipath_devdata *dd) idev->pma_counter_select[5] = IB_PMA_PORT_XMIT_WAIT; idev->link_width_enabled = 3; /* 1x or 4x */ + /* Snapshot current HW counters to "clear" them. */ + ipath_get_counters(dd, &cntrs); + idev->z_symbol_error_counter = cntrs.symbol_error_counter; + idev->z_link_error_recovery_counter = + cntrs.link_error_recovery_counter; + idev->z_link_downed_counter = cntrs.link_downed_counter; + idev->z_port_rcv_errors = cntrs.port_rcv_errors; + idev->z_port_rcv_remphys_errors = + cntrs.port_rcv_remphys_errors; + idev->z_port_xmit_discards = cntrs.port_xmit_discards; + idev->z_port_xmit_data = cntrs.port_xmit_data; + idev->z_port_rcv_data = cntrs.port_rcv_data; + idev->z_port_xmit_packets = cntrs.port_xmit_packets; + idev->z_port_rcv_packets = cntrs.port_rcv_packets; + idev->z_local_link_integrity_errors = + cntrs.local_link_integrity_errors; + idev->z_excessive_buffer_overrun_errors = + cntrs.excessive_buffer_overrun_errors; + /* * The system image GUID is supposed to be the same for all * IB HCAs in a single system but since there can be other * device types in the system, we can't be sure this is unique. */ if (!sys_image_guid) - sys_image_guid = ipath_layer_get_guid(dd); + sys_image_guid = dd->ipath_guid; idev->sys_image_guid = sys_image_guid; - idev->ib_unit = unit; + idev->ib_unit = dd->ipath_unit; idev->dd = dd; strlcpy(dev->name, "ipath%d", IB_DEVICE_NAME_MAX); dev->owner = THIS_MODULE; - dev->node_guid = ipath_layer_get_guid(dd); + dev->node_guid = dd->ipath_guid; dev->uverbs_abi_ver = IPATH_UVERBS_ABI_VERSION; dev->uverbs_cmd_mask = (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | @@ -984,9 +1554,9 @@ static void *ipath_register_ib_device(int unit, struct ipath_devdata *dd) (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | (1ull << IB_USER_VERBS_CMD_POST_SRQ_RECV); - dev->node_type = IB_NODE_CA; + dev->node_type = RDMA_NODE_IB_CA; dev->phys_port_cnt = 1; - dev->dma_device = ipath_layer_get_device(dd); + dev->dma_device = &dd->pcidev->dev; dev->class_dev.dev = dev->dma_device; dev->query_device = ipath_query_device; dev->modify_device = ipath_modify_device; @@ -1028,9 +1598,10 @@ static void *ipath_register_ib_device(int unit, struct ipath_devdata *dd) dev->attach_mcast = ipath_multicast_attach; dev->detach_mcast = ipath_multicast_detach; dev->process_mad = ipath_process_mad; + dev->mmap = ipath_mmap; snprintf(dev->node_desc, sizeof(dev->node_desc), - IPATH_IDSTR " %s kernel_SMA", system_utsname.nodename); + IPATH_IDSTR " %s", system_utsname.nodename); ret = ib_register_device(dev); if (ret) @@ -1039,7 +1610,7 @@ static void *ipath_register_ib_device(int unit, struct ipath_devdata *dd) if (ipath_verbs_register_sysfs(dev)) goto err_class; - ipath_layer_enable_timer(dd); + enable_timer(dd); goto bail; @@ -1051,37 +1622,32 @@ err_lk: kfree(idev->qp_table.table); err_qp: ib_dealloc_device(dev); - _VERBS_ERROR("ib_ipath%d cannot register verbs (%d)!\n", - unit, -ret); + ipath_dev_err(dd, "cannot register verbs: %d!\n", -ret); idev = NULL; bail: - return idev; + dd->verbs_dev = idev; + return ret; } -static void ipath_unregister_ib_device(void *arg) +void ipath_unregister_ib_device(struct ipath_ibdev *dev) { - struct ipath_ibdev *dev = (struct ipath_ibdev *) arg; struct ib_device *ibdev = &dev->ibdev; - ipath_layer_disable_timer(dev->dd); + disable_timer(dev->dd); ib_unregister_device(ibdev); if (!list_empty(&dev->pending[0]) || !list_empty(&dev->pending[1]) || !list_empty(&dev->pending[2])) - _VERBS_ERROR("ipath%d pending list not empty!\n", - dev->ib_unit); + ipath_dev_err(dev->dd, "pending list not empty!\n"); if (!list_empty(&dev->piowait)) - _VERBS_ERROR("ipath%d piowait list not empty!\n", - dev->ib_unit); + ipath_dev_err(dev->dd, "piowait list not empty!\n"); if (!list_empty(&dev->rnrwait)) - _VERBS_ERROR("ipath%d rnrwait list not empty!\n", - dev->ib_unit); + ipath_dev_err(dev->dd, "rnrwait list not empty!\n"); if (!ipath_mcast_tree_empty()) - _VERBS_ERROR("ipath%d multicast table memory leak!\n", - dev->ib_unit); + ipath_dev_err(dev->dd, "multicast table memory leak!\n"); /* * Note that ipath_unregister_ib_device() can be called before all * the QPs are destroyed! @@ -1092,28 +1658,12 @@ static void ipath_unregister_ib_device(void *arg) ib_dealloc_device(ibdev); } -static int __init ipath_verbs_init(void) -{ - return ipath_verbs_register(ipath_register_ib_device, - ipath_unregister_ib_device, - ipath_ib_piobufavail, ipath_ib_rcv, - ipath_ib_timer); -} - -static void __exit ipath_verbs_cleanup(void) -{ - ipath_verbs_unregister(); -} - static ssize_t show_rev(struct class_device *cdev, char *buf) { struct ipath_ibdev *dev = container_of(cdev, struct ipath_ibdev, ibdev.class_dev); - int vendor, boardrev, majrev, minrev; - ipath_layer_query_device(dev->dd, &vendor, &boardrev, - &majrev, &minrev); - return sprintf(buf, "%d.%d\n", majrev, minrev); + return sprintf(buf, "%x\n", dev->dd->ipath_pcirev); } static ssize_t show_hca(struct class_device *cdev, char *buf) @@ -1122,7 +1672,7 @@ static ssize_t show_hca(struct class_device *cdev, char *buf) container_of(cdev, struct ipath_ibdev, ibdev.class_dev); int ret; - ret = ipath_layer_get_boardname(dev->dd, buf, 128); + ret = dev->dd->ipath_f_get_boardname(dev->dd, buf, 128); if (ret < 0) goto bail; strcat(buf, "\n"); @@ -1149,6 +1699,7 @@ static ssize_t show_stats(struct class_device *cdev, char *buf) "RC OTH NAKs %d\n" "RC timeouts %d\n" "RC RDMA dup %d\n" + "RC stalls %d\n" "piobuf wait %d\n" "no piobuf %d\n" "PKT drops %d\n" @@ -1156,7 +1707,7 @@ static ssize_t show_stats(struct class_device *cdev, char *buf) dev->n_rc_resends, dev->n_rc_qacks, dev->n_rc_acks, dev->n_seq_naks, dev->n_rdma_seq, dev->n_rnr_naks, dev->n_other_naks, dev->n_timeouts, - dev->n_rdma_dup_busy, dev->n_piowait, + dev->n_rdma_dup_busy, dev->n_rc_stalls, dev->n_piowait, dev->n_no_piobuf, dev->n_pkt_drops, dev->n_wqe_errs); for (i = 0; i < ARRAY_SIZE(dev->opstats); i++) { const struct ipath_opcode_stats *si = &dev->opstats[i]; @@ -1199,6 +1750,3 @@ static int ipath_verbs_register_sysfs(struct ib_device *dev) bail: return ret; } - -module_init(ipath_verbs_init); -module_exit(ipath_verbs_cleanup); diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.h b/drivers/infiniband/hw/ipath/ipath_verbs.h index 4f8d59300e9b..8039f6e5f0c8 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.h +++ b/drivers/infiniband/hw/ipath/ipath_verbs.h @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -37,10 +38,10 @@ #include <linux/spinlock.h> #include <linux/kernel.h> #include <linux/interrupt.h> +#include <linux/kref.h> #include <rdma/ib_pack.h> #include "ipath_layer.h" -#include "verbs_debug.h" #define QPN_MAX (1 << 24) #define QPNMAP_ENTRIES (QPN_MAX / PAGE_SIZE / BITS_PER_BYTE) @@ -49,7 +50,7 @@ * Increment this value if any changes that break userspace ABI * compatibility are made. */ -#define IPATH_UVERBS_ABI_VERSION 1 +#define IPATH_UVERBS_ABI_VERSION 2 /* * Define an ib_cq_notify value that is not valid so we know when CQ @@ -148,19 +149,7 @@ struct ipath_mcast { struct list_head qp_list; wait_queue_head_t wait; atomic_t refcount; -}; - -/* Memory region */ -struct ipath_mr { - struct ib_mr ibmr; - struct ipath_mregion mr; /* must be last */ -}; - -/* Fast memory region */ -struct ipath_fmr { - struct ib_fmr ibfmr; - u8 page_shift; - struct ipath_mregion mr; /* must be last */ + int n_attached; }; /* Protection domain */ @@ -176,58 +165,90 @@ struct ipath_ah { }; /* - * Quick description of our CQ/QP locking scheme: - * - * We have one global lock that protects dev->cq/qp_table. Each - * struct ipath_cq/qp also has its own lock. An individual qp lock - * may be taken inside of an individual cq lock. Both cqs attached to - * a qp may be locked, with the send cq locked first. No other - * nesting should be done. - * - * Each struct ipath_cq/qp also has an atomic_t ref count. The - * pointer from the cq/qp_table to the struct counts as one reference. - * This reference also is good for access through the consumer API, so - * modifying the CQ/QP etc doesn't need to take another reference. - * Access because of a completion being polled does need a reference. - * - * Finally, each struct ipath_cq/qp has a wait_queue_head_t for the - * destroy function to sleep on. - * - * This means that access from the consumer API requires nothing but - * taking the struct's lock. - * - * Access because of a completion event should go as follows: - * - lock cq/qp_table and look up struct - * - increment ref count in struct - * - drop cq/qp_table lock - * - lock struct, do your thing, and unlock struct - * - decrement ref count; if zero, wake up waiters - * - * To destroy a CQ/QP, we can do the following: - * - lock cq/qp_table, remove pointer, unlock cq/qp_table lock - * - decrement ref count - * - wait_event until ref count is zero - * - * It is the consumer's responsibilty to make sure that no QP - * operations (WQE posting or state modification) are pending when the - * QP is destroyed. Also, the consumer must make sure that calls to - * qp_modify are serialized. - * - * Possible optimizations (wait for profile data to see if/where we - * have locks bouncing between CPUs): - * - split cq/qp table lock into n separate (cache-aligned) locks, - * indexed (say) by the page in the table + * This structure is used by ipath_mmap() to validate an offset + * when an mmap() request is made. The vm_area_struct then uses + * this as its vm_private_data. + */ +struct ipath_mmap_info { + struct ipath_mmap_info *next; + struct ib_ucontext *context; + void *obj; + struct kref ref; + unsigned size; + unsigned mmap_cnt; +}; + +/* + * This structure is used to contain the head pointer, tail pointer, + * and completion queue entries as a single memory allocation so + * it can be mmap'ed into user space. */ +struct ipath_cq_wc { + u32 head; /* index of next entry to fill */ + u32 tail; /* index of next ib_poll_cq() entry */ + struct ib_wc queue[1]; /* this is actually size ibcq.cqe + 1 */ +}; +/* + * The completion queue structure. + */ struct ipath_cq { struct ib_cq ibcq; struct tasklet_struct comptask; spinlock_t lock; u8 notify; u8 triggered; - u32 head; /* new records added to the head */ - u32 tail; /* poll_cq() reads from here. */ - struct ib_wc *queue; /* this is actually ibcq.cqe + 1 */ + struct ipath_cq_wc *queue; + struct ipath_mmap_info *ip; +}; + +/* + * A segment is a linear region of low physical memory. + * XXX Maybe we should use phys addr here and kmap()/kunmap(). + * Used by the verbs layer. + */ +struct ipath_seg { + void *vaddr; + size_t length; +}; + +/* The number of ipath_segs that fit in a page. */ +#define IPATH_SEGSZ (PAGE_SIZE / sizeof (struct ipath_seg)) + +struct ipath_segarray { + struct ipath_seg segs[IPATH_SEGSZ]; +}; + +struct ipath_mregion { + struct ib_pd *pd; /* shares refcnt of ibmr.pd */ + u64 user_base; /* User's address for this region */ + u64 iova; /* IB start address of this region */ + size_t length; + u32 lkey; + u32 offset; /* offset (bytes) to start of region */ + int access_flags; + u32 max_segs; /* number of ipath_segs in all the arrays */ + u32 mapsz; /* size of the map array */ + struct ipath_segarray *map[0]; /* the segments */ +}; + +/* + * These keep track of the copy progress within a memory region. + * Used by the verbs layer. + */ +struct ipath_sge { + struct ipath_mregion *mr; + void *vaddr; /* current pointer into the segment */ + u32 sge_length; /* length of the SGE */ + u32 length; /* remaining length of the segment */ + u16 m; /* current index: mr->map[m] */ + u16 n; /* current index: mr->map[m]->segs[n] */ +}; + +/* Memory region */ +struct ipath_mr { + struct ib_mr ibmr; + struct ipath_mregion mr; /* must be last */ }; /* @@ -246,32 +267,50 @@ struct ipath_swqe { /* * Receive work request queue entry. - * The size of the sg_list is determined when the QP is created and stored - * in qp->r_max_sge. + * The size of the sg_list is determined when the QP (or SRQ) is created + * and stored in qp->r_rq.max_sge (or srq->rq.max_sge). */ struct ipath_rwqe { u64 wr_id; - u32 length; /* total length of data in sg_list */ u8 num_sge; - struct ipath_sge sg_list[0]; + struct ib_sge sg_list[0]; }; -struct ipath_rq { - spinlock_t lock; +/* + * This structure is used to contain the head pointer, tail pointer, + * and receive work queue entries as a single memory allocation so + * it can be mmap'ed into user space. + * Note that the wq array elements are variable size so you can't + * just index into the array to get the N'th element; + * use get_rwqe_ptr() instead. + */ +struct ipath_rwq { u32 head; /* new work requests posted to the head */ u32 tail; /* receives pull requests from here. */ + struct ipath_rwqe wq[0]; +}; + +struct ipath_rq { + struct ipath_rwq *wq; + spinlock_t lock; u32 size; /* size of RWQE array */ u8 max_sge; - struct ipath_rwqe *wq; /* RWQE array */ }; struct ipath_srq { struct ib_srq ibsrq; struct ipath_rq rq; + struct ipath_mmap_info *ip; /* send signal when number of RWQEs < limit */ u32 limit; }; +struct ipath_sge_state { + struct ipath_sge *sg_list; /* next SGE to be used if any */ + struct ipath_sge sge; /* progress state for the current SGE */ + u8 num_sge; +}; + /* * Variables prefixed with s_ are for the requester (sender). * Variables prefixed with r_ are for the responder (receiver). @@ -291,6 +330,7 @@ struct ipath_qp { atomic_t refcount; wait_queue_head_t wait; struct tasklet_struct s_task; + struct ipath_mmap_info *ip; struct ipath_sge_state *s_cur_sge; struct ipath_sge_state s_sge; /* current send request data */ /* current RDMA read send data */ @@ -305,32 +345,37 @@ struct ipath_qp { u32 s_next_psn; /* PSN for next request */ u32 s_last_psn; /* last response PSN processed */ u32 s_psn; /* current packet sequence number */ + u32 s_ack_psn; /* PSN for RDMA_READ */ u32 s_rnr_timeout; /* number of milliseconds for RNR timeout */ - u32 s_ack_psn; /* PSN for next ACK or RDMA_READ */ - u64 s_ack_atomic; /* data for atomic ACK */ + u32 r_ack_psn; /* PSN for next ACK or atomic ACK */ u64 r_wr_id; /* ID for current receive WQE */ u64 r_atomic_data; /* data for last atomic op */ u32 r_atomic_psn; /* PSN of last atomic op */ u32 r_len; /* total length of r_sge */ u32 r_rcv_len; /* receive data len processed */ u32 r_psn; /* expected rcv packet sequence number */ + u32 r_msn; /* message sequence number */ u8 state; /* QP state */ u8 s_state; /* opcode of last packet sent */ u8 s_ack_state; /* opcode of packet to ACK */ u8 s_nak_state; /* non-zero if NAK is pending */ u8 r_state; /* opcode of last packet received */ + u8 r_ack_state; /* opcode of packet to ACK */ + u8 r_nak_state; /* non-zero if NAK is pending */ + u8 r_min_rnr_timer; /* retry timeout value for RNR NAKs */ u8 r_reuse_sge; /* for UC receive errors */ u8 r_sge_inx; /* current index into sg_list */ - u8 s_max_sge; /* size of s_wq->sg_list */ + u8 r_wrid_valid; /* r_wrid set but CQ entry not yet made */ u8 qp_access_flags; + u8 s_max_sge; /* size of s_wq->sg_list */ u8 s_retry_cnt; /* number of times to retry */ u8 s_rnr_retry_cnt; - u8 s_min_rnr_timer; u8 s_retry; /* requester retry counter */ u8 s_rnr_retry; /* requester RNR retry counter */ + u8 s_wait_credit; /* limit number of unacked packets sent */ u8 s_pkey_index; /* PKEY index to use */ + u8 timeout; /* Timeout for this QP */ enum ib_mtu path_mtu; - atomic_t msn; /* message sequence number */ u32 remote_qpn; u32 qkey; /* QKEY for this QP (for UD or RD) */ u32 s_size; /* send work queue size */ @@ -341,7 +386,8 @@ struct ipath_qp { u32 s_ssn; /* SSN of tail entry */ u32 s_lsn; /* limit sequence number (credit) */ struct ipath_swqe *s_wq; /* send work queue */ - struct ipath_rq r_rq; /* receive work queue */ + struct ipath_rq r_rq; /* receive work queue */ + struct ipath_sge r_sg_list[0]; /* verified SGEs */ }; /* @@ -350,6 +396,8 @@ struct ipath_qp { #define IPATH_S_BUSY 0 #define IPATH_S_SIGNAL_REQ_WR 1 +#define IPATH_PSN_CREDIT 2048 + /* * Since struct ipath_swqe is not a fixed size, we can't simply index into * struct ipath_qp.s_wq. This function does the array index computation. @@ -365,15 +413,15 @@ static inline struct ipath_swqe *get_swqe_ptr(struct ipath_qp *qp, /* * Since struct ipath_rwqe is not a fixed size, we can't simply index into - * struct ipath_rq.wq. This function does the array index computation. + * struct ipath_rwq.wq. This function does the array index computation. */ static inline struct ipath_rwqe *get_rwqe_ptr(struct ipath_rq *rq, unsigned n) { return (struct ipath_rwqe *) - ((char *) rq->wq + + ((char *) rq->wq->wq + (sizeof(struct ipath_rwqe) + - rq->max_sge * sizeof(struct ipath_sge)) * n); + rq->max_sge * sizeof(struct ib_sge)) * n); } /* @@ -413,6 +461,7 @@ struct ipath_ibdev { struct ib_device ibdev; struct list_head dev_list; struct ipath_devdata *dd; + struct ipath_mmap_info *pending_mmaps; int ib_unit; /* This is the device number */ u16 sm_lid; /* in host order */ u8 sm_sl; @@ -431,6 +480,20 @@ struct ipath_ibdev { __be64 sys_image_guid; /* in network order */ __be64 gid_prefix; /* in network order */ __be64 mkey; + + u32 n_pds_allocated; /* number of PDs allocated for device */ + spinlock_t n_pds_lock; + u32 n_ahs_allocated; /* number of AHs allocated for device */ + spinlock_t n_ahs_lock; + u32 n_cqs_allocated; /* number of CQs allocated for device */ + spinlock_t n_cqs_lock; + u32 n_qps_allocated; /* number of QPs allocated for device */ + spinlock_t n_qps_lock; + u32 n_srqs_allocated; /* number of SRQs allocated for device */ + spinlock_t n_srqs_lock; + u32 n_mcast_grps_allocated; /* number of mcast groups allocated */ + spinlock_t n_mcast_grps_lock; + u64 ipath_sword; /* total dwords sent (sample result) */ u64 ipath_rword; /* total dwords received (sample result) */ u64 ipath_spkts; /* total packets sent (sample result) */ @@ -442,17 +505,19 @@ struct ipath_ibdev { u64 n_unicast_rcv; /* total unicast packets received */ u64 n_multicast_xmit; /* total multicast packets sent */ u64 n_multicast_rcv; /* total multicast packets received */ - u64 n_symbol_error_counter; /* starting count for PMA */ - u64 n_link_error_recovery_counter; /* starting count for PMA */ - u64 n_link_downed_counter; /* starting count for PMA */ - u64 n_port_rcv_errors; /* starting count for PMA */ - u64 n_port_rcv_remphys_errors; /* starting count for PMA */ - u64 n_port_xmit_discards; /* starting count for PMA */ - u64 n_port_xmit_data; /* starting count for PMA */ - u64 n_port_rcv_data; /* starting count for PMA */ - u64 n_port_xmit_packets; /* starting count for PMA */ - u64 n_port_rcv_packets; /* starting count for PMA */ - u32 n_pkey_violations; /* starting count for PMA */ + u64 z_symbol_error_counter; /* starting count for PMA */ + u64 z_link_error_recovery_counter; /* starting count for PMA */ + u64 z_link_downed_counter; /* starting count for PMA */ + u64 z_port_rcv_errors; /* starting count for PMA */ + u64 z_port_rcv_remphys_errors; /* starting count for PMA */ + u64 z_port_xmit_discards; /* starting count for PMA */ + u64 z_port_xmit_data; /* starting count for PMA */ + u64 z_port_rcv_data; /* starting count for PMA */ + u64 z_port_xmit_packets; /* starting count for PMA */ + u64 z_port_rcv_packets; /* starting count for PMA */ + u32 z_pkey_violations; /* starting count for PMA */ + u32 z_local_link_integrity_errors; /* starting count for PMA */ + u32 z_excessive_buffer_overrun_errors; /* starting count for PMA */ u32 n_rc_resends; u32 n_rc_acks; u32 n_rc_qacks; @@ -461,7 +526,9 @@ struct ipath_ibdev { u32 n_rnr_naks; u32 n_other_naks; u32 n_timeouts; + u32 n_rc_stalls; u32 n_pkt_drops; + u32 n_vl15_dropped; u32 n_wqe_errs; u32 n_rdma_dup_busy; u32 n_piowait; @@ -482,8 +549,19 @@ struct ipath_ibdev { struct ipath_opcode_stats opstats[128]; }; -struct ipath_ucontext { - struct ib_ucontext ibucontext; +struct ipath_verbs_counters { + u64 symbol_error_counter; + u64 link_error_recovery_counter; + u64 link_downed_counter; + u64 port_rcv_errors; + u64 port_rcv_remphys_errors; + u64 port_xmit_discards; + u64 port_xmit_data; + u64 port_rcv_data; + u64 port_xmit_packets; + u64 port_rcv_packets; + u32 local_link_integrity_errors; + u32 excessive_buffer_overrun_errors; }; static inline struct ipath_mr *to_imr(struct ib_mr *ibmr) @@ -491,11 +569,6 @@ static inline struct ipath_mr *to_imr(struct ib_mr *ibmr) return container_of(ibmr, struct ipath_mr, ibmr); } -static inline struct ipath_fmr *to_ifmr(struct ib_fmr *ibfmr) -{ - return container_of(ibfmr, struct ipath_fmr, ibfmr); -} - static inline struct ipath_pd *to_ipd(struct ib_pd *ibpd) { return container_of(ibpd, struct ipath_pd, ibpd); @@ -533,12 +606,6 @@ int ipath_process_mad(struct ib_device *ibdev, struct ib_grh *in_grh, struct ib_mad *in_mad, struct ib_mad *out_mad); -static inline struct ipath_ucontext *to_iucontext(struct ib_ucontext - *ibucontext) -{ - return container_of(ibucontext, struct ipath_ucontext, ibucontext); -} - /* * Compare the lower 24 bits of the two values. * Returns an integer <, ==, or > than zero. @@ -550,6 +617,13 @@ static inline int ipath_cmp24(u32 a, u32 b) struct ipath_mcast *ipath_mcast_find(union ib_gid *mgid); +int ipath_snapshot_counters(struct ipath_devdata *dd, u64 *swords, + u64 *rwords, u64 *spkts, u64 *rpkts, + u64 *xmit_wait); + +int ipath_get_counters(struct ipath_devdata *dd, + struct ipath_verbs_counters *cntrs); + int ipath_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); int ipath_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); @@ -566,8 +640,10 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, int ipath_destroy_qp(struct ib_qp *ibqp); +void ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err); + int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, - int attr_mask); + int attr_mask, struct ib_udata *udata); int ipath_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, struct ib_qp_init_attr *init_attr); @@ -580,23 +656,16 @@ void ipath_sqerror_qp(struct ipath_qp *qp, struct ib_wc *wc); void ipath_get_credit(struct ipath_qp *qp, u32 aeth); -void ipath_do_rc_send(unsigned long data); - -void ipath_do_uc_send(unsigned long data); +int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords, + u32 *hdr, u32 len, struct ipath_sge_state *ss); void ipath_cq_enter(struct ipath_cq *cq, struct ib_wc *entry, int sig); -int ipath_rkey_ok(struct ipath_ibdev *dev, struct ipath_sge_state *ss, - u32 len, u64 vaddr, u32 rkey, int acc); - -int ipath_lkey_ok(struct ipath_lkey_table *rkt, struct ipath_sge *isge, - struct ib_sge *sge, int acc); - void ipath_copy_sge(struct ipath_sge_state *ss, void *data, u32 length); void ipath_skip_sge(struct ipath_sge_state *ss, u32 length); -int ipath_post_rc_send(struct ipath_qp *qp, struct ib_send_wr *wr); +int ipath_post_ruc_send(struct ipath_qp *qp, struct ib_send_wr *wr); void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, int has_grh, void *data, u32 tlen, struct ipath_qp *qp); @@ -616,10 +685,10 @@ int ipath_alloc_lkey(struct ipath_lkey_table *rkt, void ipath_free_lkey(struct ipath_lkey_table *rkt, u32 lkey); -int ipath_lkey_ok(struct ipath_lkey_table *rkt, struct ipath_sge *isge, +int ipath_lkey_ok(struct ipath_qp *qp, struct ipath_sge *isge, struct ib_sge *sge, int acc); -int ipath_rkey_ok(struct ipath_ibdev *dev, struct ipath_sge_state *ss, +int ipath_rkey_ok(struct ipath_qp *qp, struct ipath_sge_state *ss, u32 len, u64 vaddr, u32 rkey, int acc); int ipath_post_srq_receive(struct ib_srq *ibsrq, struct ib_recv_wr *wr, @@ -630,7 +699,8 @@ struct ib_srq *ipath_create_srq(struct ib_pd *ibpd, struct ib_udata *udata); int ipath_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, - enum ib_srq_attr_mask attr_mask); + enum ib_srq_attr_mask attr_mask, + struct ib_udata *udata); int ipath_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr); @@ -672,13 +742,45 @@ int ipath_unmap_fmr(struct list_head *fmr_list); int ipath_dealloc_fmr(struct ib_fmr *ibfmr); +void ipath_release_mmap_info(struct kref *ref); + +int ipath_mmap(struct ib_ucontext *context, struct vm_area_struct *vma); + void ipath_no_bufs_available(struct ipath_qp *qp, struct ipath_ibdev *dev); void ipath_insert_rnr_queue(struct ipath_qp *qp); int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only); -void ipath_ruc_loopback(struct ipath_qp *sqp, struct ib_wc *wc); +u32 ipath_make_grh(struct ipath_ibdev *dev, struct ib_grh *hdr, + struct ib_global_route *grh, u32 hwords, u32 nwords); + +void ipath_do_ruc_send(unsigned long data); + +u32 ipath_make_rc_ack(struct ipath_qp *qp, struct ipath_other_headers *ohdr, + u32 pmtu); + +int ipath_make_rc_req(struct ipath_qp *qp, struct ipath_other_headers *ohdr, + u32 pmtu, u32 *bth0p, u32 *bth2p); + +int ipath_make_uc_req(struct ipath_qp *qp, struct ipath_other_headers *ohdr, + u32 pmtu, u32 *bth0p, u32 *bth2p); + +int ipath_register_ib_device(struct ipath_devdata *); + +void ipath_unregister_ib_device(struct ipath_ibdev *); + +void ipath_ib_rcv(struct ipath_ibdev *, void *, void *, u32); + +int ipath_ib_piobufavail(struct ipath_ibdev *); + +void ipath_ib_timer(struct ipath_ibdev *); + +unsigned ipath_get_npkeys(struct ipath_devdata *); + +u32 ipath_get_cr_errpkey(struct ipath_devdata *); + +unsigned ipath_get_pkey(struct ipath_devdata *, unsigned); extern const enum ib_wc_opcode ib_ipath_wc_opcode[]; @@ -688,6 +790,26 @@ extern const int ib_ipath_state_ops[]; extern unsigned int ib_ipath_lkey_table_size; +extern unsigned int ib_ipath_max_cqes; + +extern unsigned int ib_ipath_max_cqs; + +extern unsigned int ib_ipath_max_qp_wrs; + +extern unsigned int ib_ipath_max_qps; + +extern unsigned int ib_ipath_max_sges; + +extern unsigned int ib_ipath_max_mcast_grps; + +extern unsigned int ib_ipath_max_mcast_qp_attached; + +extern unsigned int ib_ipath_max_srqs; + +extern unsigned int ib_ipath_max_srq_sges; + +extern unsigned int ib_ipath_max_srq_wrs; + extern const u32 ib_ipath_rnr_table[]; #endif /* IPATH_VERBS_H */ diff --git a/drivers/infiniband/hw/ipath/ipath_verbs_mcast.c b/drivers/infiniband/hw/ipath/ipath_verbs_mcast.c index 10b31d2c4f20..085e28b939ec 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs_mcast.c +++ b/drivers/infiniband/hw/ipath/ipath_verbs_mcast.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -92,6 +93,7 @@ static struct ipath_mcast *ipath_mcast_alloc(union ib_gid *mgid) INIT_LIST_HEAD(&mcast->qp_list); init_waitqueue_head(&mcast->wait); atomic_set(&mcast->refcount, 0); + mcast->n_attached = 0; bail: return mcast; @@ -157,7 +159,8 @@ bail: * the table but the QP was added. Return ESRCH if the QP was already * attached and neither structure was added. */ -static int ipath_mcast_add(struct ipath_mcast *mcast, +static int ipath_mcast_add(struct ipath_ibdev *dev, + struct ipath_mcast *mcast, struct ipath_mcast_qp *mqp) { struct rb_node **n = &mcast_tree.rb_node; @@ -188,34 +191,52 @@ static int ipath_mcast_add(struct ipath_mcast *mcast, /* Search the QP list to see if this is already there. */ list_for_each_entry_rcu(p, &tmcast->qp_list, list) { if (p->qp == mqp->qp) { - spin_unlock_irqrestore(&mcast_lock, flags); ret = ESRCH; goto bail; } } + if (tmcast->n_attached == ib_ipath_max_mcast_qp_attached) { + ret = ENOMEM; + goto bail; + } + + tmcast->n_attached++; + list_add_tail_rcu(&mqp->list, &tmcast->qp_list); - spin_unlock_irqrestore(&mcast_lock, flags); ret = EEXIST; goto bail; } + spin_lock(&dev->n_mcast_grps_lock); + if (dev->n_mcast_grps_allocated == ib_ipath_max_mcast_grps) { + spin_unlock(&dev->n_mcast_grps_lock); + ret = ENOMEM; + goto bail; + } + + dev->n_mcast_grps_allocated++; + spin_unlock(&dev->n_mcast_grps_lock); + + mcast->n_attached++; + list_add_tail_rcu(&mqp->list, &mcast->qp_list); atomic_inc(&mcast->refcount); rb_link_node(&mcast->rb_node, pn, n); rb_insert_color(&mcast->rb_node, &mcast_tree); - spin_unlock_irqrestore(&mcast_lock, flags); - ret = 0; bail: + spin_unlock_irqrestore(&mcast_lock, flags); + return ret; } int ipath_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { struct ipath_qp *qp = to_iqp(ibqp); + struct ipath_ibdev *dev = to_idev(ibqp->device); struct ipath_mcast *mcast; struct ipath_mcast_qp *mqp; int ret; @@ -235,7 +256,7 @@ int ipath_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) ret = -ENOMEM; goto bail; } - switch (ipath_mcast_add(mcast, mqp)) { + switch (ipath_mcast_add(dev, mcast, mqp)) { case ESRCH: /* Neither was used: can't attach the same QP twice. */ ipath_mcast_qp_free(mqp); @@ -245,6 +266,12 @@ int ipath_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) case EEXIST: /* The mcast wasn't used */ ipath_mcast_free(mcast); break; + case ENOMEM: + /* Exceeded the maximum number of mcast groups. */ + ipath_mcast_qp_free(mqp); + ipath_mcast_free(mcast); + ret = -ENOMEM; + goto bail; default: break; } @@ -258,6 +285,7 @@ bail: int ipath_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { struct ipath_qp *qp = to_iqp(ibqp); + struct ipath_ibdev *dev = to_idev(ibqp->device); struct ipath_mcast *mcast = NULL; struct ipath_mcast_qp *p, *tmp; struct rb_node *n; @@ -272,7 +300,7 @@ int ipath_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) while (1) { if (n == NULL) { spin_unlock_irqrestore(&mcast_lock, flags); - ret = 0; + ret = -EINVAL; goto bail; } @@ -296,6 +324,7 @@ int ipath_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) * link until we are sure there are no list walkers. */ list_del_rcu(&p->list); + mcast->n_attached--; /* If this was the last attached QP, remove the GID too. */ if (list_empty(&mcast->qp_list)) { @@ -319,6 +348,9 @@ int ipath_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) atomic_dec(&mcast->refcount); wait_event(mcast->wait, !atomic_read(&mcast->refcount)); ipath_mcast_free(mcast); + spin_lock(&dev->n_mcast_grps_lock); + dev->n_mcast_grps_allocated--; + spin_unlock(&dev->n_mcast_grps_lock); } ret = 0; diff --git a/drivers/infiniband/hw/ipath/ipath_wc_ppc64.c b/drivers/infiniband/hw/ipath/ipath_wc_ppc64.c new file mode 100644 index 000000000000..0095bb70f34e --- /dev/null +++ b/drivers/infiniband/hw/ipath/ipath_wc_ppc64.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +/* + * This file is conditionally built on PowerPC only. Otherwise weak symbol + * versions of the functions exported from here are used. + */ + +#include "ipath_kernel.h" + +/** + * ipath_enable_wc - enable write combining for MMIO writes to the device + * @dd: infinipath device + * + * Nothing to do on PowerPC, so just return without error. + */ +int ipath_enable_wc(struct ipath_devdata *dd) +{ + return 0; +} + +/** + * ipath_unordered_wc - indicate whether write combining is unordered + * + * Because our performance depends on our ability to do write + * combining mmio writes in the most efficient way, we need to + * know if we are on a processor that may reorder stores when + * write combining. + */ +int ipath_unordered_wc(void) +{ + return 1; +} diff --git a/drivers/infiniband/hw/ipath/ipath_wc_x86_64.c b/drivers/infiniband/hw/ipath/ipath_wc_x86_64.c index adc5322f15c1..04696e62da87 100644 --- a/drivers/infiniband/hw/ipath/ipath_wc_x86_64.c +++ b/drivers/infiniband/hw/ipath/ipath_wc_x86_64.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -122,6 +123,8 @@ int ipath_enable_wc(struct ipath_devdata *dd) ipath_cdbg(VERBOSE, "Set mtrr for chip to WC, " "cookie is %d\n", cookie); dd->ipath_wc_cookie = cookie; + dd->ipath_wc_base = (unsigned long) pioaddr; + dd->ipath_wc_len = (unsigned long) piolen; } } @@ -135,9 +138,16 @@ int ipath_enable_wc(struct ipath_devdata *dd) void ipath_disable_wc(struct ipath_devdata *dd) { if (dd->ipath_wc_cookie) { + int r; ipath_cdbg(VERBOSE, "undoing WCCOMB on pio buffers\n"); - mtrr_del(dd->ipath_wc_cookie, 0, 0); - dd->ipath_wc_cookie = 0; + r = mtrr_del(dd->ipath_wc_cookie, dd->ipath_wc_base, + dd->ipath_wc_len); + if (r < 0) + dev_info(&dd->pcidev->dev, + "mtrr_del(%lx, %lx, %lx) failed: %d\n", + dd->ipath_wc_cookie, dd->ipath_wc_base, + dd->ipath_wc_len, r); + dd->ipath_wc_cookie = 0; /* even on failure */ } } diff --git a/drivers/infiniband/hw/ipath/ips_common.h b/drivers/infiniband/hw/ipath/ips_common.h deleted file mode 100644 index ab7cbbbfd03a..000000000000 --- a/drivers/infiniband/hw/ipath/ips_common.h +++ /dev/null @@ -1,263 +0,0 @@ -#ifndef IPS_COMMON_H -#define IPS_COMMON_H -/* - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include "ipath_common.h" - -struct ipath_header { - /* - * Version - 4 bits, Port - 4 bits, TID - 10 bits and Offset - - * 14 bits before ECO change ~28 Dec 03. After that, Vers 4, - * Port 3, TID 11, offset 14. - */ - __le32 ver_port_tid_offset; - __le16 chksum; - __le16 pkt_flags; -}; - -struct ips_message_header { - __be16 lrh[4]; - __be32 bth[3]; - /* fields below this point are in host byte order */ - struct ipath_header iph; - __u8 sub_opcode; - __u8 flags; - __u16 src_rank; - /* 24 bits. The upper 8 bit is available for other use */ - union { - struct { - unsigned ack_seq_num:24; - unsigned port:4; - unsigned unused:4; - }; - __u32 ack_seq_num_org; - }; - __u8 expected_tid_session_id; - __u8 tinylen; /* to aid MPI */ - union { - __u16 tag; /* to aid MPI */ - __u16 mqhdr; /* for PSM MQ */ - }; - union { - __u32 mpi[4]; /* to aid MPI */ - __u32 data[4]; - __u64 mq[2]; /* for PSM MQ */ - struct { - __u16 mtu; - __u8 major_ver; - __u8 minor_ver; - __u32 not_used; //free - __u32 run_id; - __u32 client_ver; - }; - }; -}; - -struct ether_header { - __be16 lrh[4]; - __be32 bth[3]; - struct ipath_header iph; - __u8 sub_opcode; - __u8 cmd; - __be16 lid; - __u16 mac[3]; - __u8 frag_num; - __u8 seq_num; - __le32 len; - /* MUST be of word size due to PIO write requirements */ - __le32 csum; - __le16 csum_offset; - __le16 flags; - __u16 first_2_bytes; - __u8 unused[2]; /* currently unused */ -}; - -/* - * The PIO buffer used for sending infinipath messages must only be written - * in 32-bit words, all the data must be written, and no writes can occur - * after the last word is written (which transfers "ownership" of the buffer - * to the chip and triggers the message to be sent). - * Since the Linux sk_buff structure can be recursive, non-aligned, and - * any number of bytes in each segment, we use the following structure - * to keep information about the overall state of the copy operation. - * This is used to save the information needed to store the checksum - * in the right place before sending the last word to the hardware and - * to buffer the last 0-3 bytes of non-word sized segments. - */ -struct copy_data_s { - struct ether_header *hdr; - /* addr of PIO buf to write csum to */ - __u32 __iomem *csum_pio; - __u32 __iomem *to; /* addr of PIO buf to write data to */ - __u32 device; /* which device to allocate PIO bufs from */ - __s32 error; /* set if there is an error. */ - __s32 extra; /* amount of data saved in u.buf below */ - __u32 len; /* total length to send in bytes */ - __u32 flen; /* frament length in words */ - __u32 csum; /* partial IP checksum */ - __u32 pos; /* position for partial checksum */ - __u32 offset; /* offset to where data currently starts */ - __s32 checksum_calc; /* set to 1 when csum has been calculated */ - struct sk_buff *skb; - union { - __u32 w; - __u8 buf[4]; - } u; -}; - -/* IB - LRH header consts */ -#define IPS_LRH_GRH 0x0003 /* 1. word of IB LRH - next header: GRH */ -#define IPS_LRH_BTH 0x0002 /* 1. word of IB LRH - next header: BTH */ - -#define IPS_OFFSET 0 - -/* - * defines the cut-off point between the header queue and eager/expected - * TID queue - */ -#define NUM_OF_EXTRA_WORDS_IN_HEADER_QUEUE \ - ((sizeof(struct ips_message_header) - \ - offsetof(struct ips_message_header, iph)) >> 2) - -/* OpCodes */ -#define OPCODE_IPS 0xC0 -#define OPCODE_ITH4X 0xC1 - -/* OpCode 30 is use by stand-alone test programs */ -#define OPCODE_RAW_DATA 0xDE -/* last OpCode (31) is reserved for test */ -#define OPCODE_TEST 0xDF - -/* sub OpCodes - ips */ -#define OPCODE_SEQ_DATA 0x01 -#define OPCODE_SEQ_CTRL 0x02 - -#define OPCODE_SEQ_MQ_DATA 0x03 -#define OPCODE_SEQ_MQ_CTRL 0x04 - -#define OPCODE_ACK 0x10 -#define OPCODE_NAK 0x11 - -#define OPCODE_ERR_CHK 0x20 -#define OPCODE_ERR_CHK_PLS 0x21 - -#define OPCODE_STARTUP 0x30 -#define OPCODE_STARTUP_ACK 0x31 -#define OPCODE_STARTUP_NAK 0x32 - -#define OPCODE_STARTUP_EXT 0x34 -#define OPCODE_STARTUP_ACK_EXT 0x35 -#define OPCODE_STARTUP_NAK_EXT 0x36 - -#define OPCODE_TIDS_RELEASE 0x40 -#define OPCODE_TIDS_RELEASE_CONFIRM 0x41 - -#define OPCODE_CLOSE 0x50 -#define OPCODE_CLOSE_ACK 0x51 -/* - * like OPCODE_CLOSE, but no complaint if other side has already closed. - * Used when doing abort(), MPI_Abort(), etc. - */ -#define OPCODE_ABORT 0x52 - -/* sub OpCodes - ith4x */ -#define OPCODE_ENCAP 0x81 -#define OPCODE_LID_ARP 0x82 - -/* Receive Header Queue: receive type (from infinipath) */ -#define RCVHQ_RCV_TYPE_EXPECTED 0 -#define RCVHQ_RCV_TYPE_EAGER 1 -#define RCVHQ_RCV_TYPE_NON_KD 2 -#define RCVHQ_RCV_TYPE_ERROR 3 - -/* misc. */ -#define SIZE_OF_CRC 1 - -#define EAGER_TID_ID INFINIPATH_I_TID_MASK - -#define IPS_DEFAULT_P_KEY 0xFFFF - -#define IPS_PERMISSIVE_LID 0xFFFF -#define IPS_MULTICAST_LID_BASE 0xC000 - -#define IPS_AETH_CREDIT_SHIFT 24 -#define IPS_AETH_CREDIT_MASK 0x1F -#define IPS_AETH_CREDIT_INVAL 0x1F - -#define IPS_PSN_MASK 0xFFFFFF -#define IPS_MSN_MASK 0xFFFFFF -#define IPS_QPN_MASK 0xFFFFFF -#define IPS_MULTICAST_QPN 0xFFFFFF - -/* functions for extracting fields from rcvhdrq entries */ -static inline __u32 ips_get_hdr_err_flags(const __le32 * rbuf) -{ - return __le32_to_cpu(rbuf[1]); -} - -static inline __u32 ips_get_index(const __le32 * rbuf) -{ - return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_EGRINDEX_SHIFT) - & INFINIPATH_RHF_EGRINDEX_MASK; -} - -static inline __u32 ips_get_rcv_type(const __le32 * rbuf) -{ - return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_RCVTYPE_SHIFT) - & INFINIPATH_RHF_RCVTYPE_MASK; -} - -static inline __u32 ips_get_length_in_bytes(const __le32 * rbuf) -{ - return ((__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_LENGTH_SHIFT) - & INFINIPATH_RHF_LENGTH_MASK) << 2; -} - -static inline void *ips_get_first_protocol_header(const __u32 * rbuf) -{ - return (void *)&rbuf[2]; -} - -static inline struct ips_message_header *ips_get_ips_header(const __u32 * - rbuf) -{ - return (struct ips_message_header *)&rbuf[2]; -} - -static inline __u32 ips_get_ipath_ver(__le32 hdrword) -{ - return (__le32_to_cpu(hdrword) >> INFINIPATH_I_VERS_SHIFT) - & INFINIPATH_I_VERS_MASK; -} - -#endif /* IPS_COMMON_H */ diff --git a/drivers/infiniband/hw/ipath/verbs_debug.h b/drivers/infiniband/hw/ipath/verbs_debug.h deleted file mode 100644 index 40d693cf3f94..000000000000 --- a/drivers/infiniband/hw/ipath/verbs_debug.h +++ /dev/null @@ -1,107 +0,0 @@ -/* - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef _VERBS_DEBUG_H -#define _VERBS_DEBUG_H - -/* - * This file contains tracing code for the ib_ipath kernel module. - */ -#ifndef _VERBS_DEBUGGING /* tracing enabled or not */ -#define _VERBS_DEBUGGING 1 -#endif - -extern unsigned ib_ipath_debug; - -#define _VERBS_ERROR(fmt,...) \ - do { \ - printk(KERN_ERR "%s: " fmt, "ib_ipath", ##__VA_ARGS__); \ - } while(0) - -#define _VERBS_UNIT_ERROR(unit,fmt,...) \ - do { \ - printk(KERN_ERR "%s: " fmt, "ib_ipath", ##__VA_ARGS__); \ - } while(0) - -#if _VERBS_DEBUGGING - -/* - * Mask values for debugging. The scheme allows us to compile out any - * of the debug tracing stuff, and if compiled in, to enable or - * disable dynamically. - * This can be set at modprobe time also: - * modprobe ib_path ib_ipath_debug=3 - */ - -#define __VERBS_INFO 0x1 /* generic low verbosity stuff */ -#define __VERBS_DBG 0x2 /* generic debug */ -#define __VERBS_VDBG 0x4 /* verbose debug */ -#define __VERBS_SMADBG 0x8000 /* sma packet debug */ - -#define _VERBS_INFO(fmt,...) \ - do { \ - if (unlikely(ib_ipath_debug&__VERBS_INFO)) \ - printk(KERN_INFO "%s: " fmt,"ib_ipath", \ - ##__VA_ARGS__); \ - } while(0) - -#define _VERBS_DBG(fmt,...) \ - do { \ - if (unlikely(ib_ipath_debug&__VERBS_DBG)) \ - printk(KERN_DEBUG "%s: " fmt, __func__, \ - ##__VA_ARGS__); \ - } while(0) - -#define _VERBS_VDBG(fmt,...) \ - do { \ - if (unlikely(ib_ipath_debug&__VERBS_VDBG)) \ - printk(KERN_DEBUG "%s: " fmt, __func__, \ - ##__VA_ARGS__); \ - } while(0) - -#define _VERBS_SMADBG(fmt,...) \ - do { \ - if (unlikely(ib_ipath_debug&__VERBS_SMADBG)) \ - printk(KERN_DEBUG "%s: " fmt, __func__, \ - ##__VA_ARGS__); \ - } while(0) - -#else /* ! _VERBS_DEBUGGING */ - -#define _VERBS_INFO(fmt,...) -#define _VERBS_DBG(fmt,...) -#define _VERBS_VDBG(fmt,...) -#define _VERBS_SMADBG(fmt,...) - -#endif /* _VERBS_DEBUGGING */ - -#endif /* _VERBS_DEBUG_H */ |
