diff options
| author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-05-18 05:14:22 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-11 16:29:21 -0700 |
| commit | d9fb9f384292d848ad9db386bcf97f1e06e60264 (patch) | |
| tree | 128d65c7255f188ec7d4cea4fa637c700bcb5828 /drivers/net/natsemi.c | |
| parent | 8fb6b0908176704a3ea22005e8a9fa3ebf35b5be (diff) | |
| download | blackbird-op-linux-d9fb9f384292d848ad9db386bcf97f1e06e60264.tar.gz blackbird-op-linux-d9fb9f384292d848ad9db386bcf97f1e06e60264.zip | |
*sonic/natsemi/ns83829: Move the National Semi-conductor drivers
Move the National Semi-conductor drivers into drivers/net/ethernet/natsemi/
and make the necessary Kconfig and Makefile changes. Also moved the 8390
(National Semi-conductor) devices as a sub-menu of National Semi-conductor
devices.
- moved the ibmlana driver as well into this directory since it is a
"SONIC" driver
CC: Alfred Arnold <alfred.arnold@lancom.de>
CC: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
CC: Harald Welte <laforge@gnumonks.org>
CC: Tim Hockin <thockin@hockin.org>
CC: <linux-ns83820@kvack.org>
CC: Kevin Chea <kchea@yahoo.com>
CC: Marc Gauthier <marc@linux-xtensa.org>
CC: Chris Zankel <chris@zankel.net>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Marc Gauthier <marc@tensilica.com>
Diffstat (limited to 'drivers/net/natsemi.c')
| -rw-r--r-- | drivers/net/natsemi.c | 3370 |
1 files changed, 0 insertions, 3370 deletions
diff --git a/drivers/net/natsemi.c b/drivers/net/natsemi.c deleted file mode 100644 index 2962cc695ce3..000000000000 --- a/drivers/net/natsemi.c +++ /dev/null @@ -1,3370 +0,0 @@ -/* natsemi.c: A Linux PCI Ethernet driver for the NatSemi DP8381x series. */ -/* - Written/copyright 1999-2001 by Donald Becker. - Portions copyright (c) 2001,2002 Sun Microsystems (thockin@sun.com) - Portions copyright 2001,2002 Manfred Spraul (manfred@colorfullife.com) - Portions copyright 2004 Harald Welte <laforge@gnumonks.org> - - This software may be used and distributed according to the terms of - the GNU General Public License (GPL), incorporated herein by reference. - Drivers based on or derived from this code fall under the GPL and must - retain the authorship, copyright and license notice. This file is not - a complete program and may only be used when the entire operating - system is licensed under the GPL. License for under other terms may be - available. Contact the original author for details. - - The original author may be reached as becker@scyld.com, or at - Scyld Computing Corporation - 410 Severn Ave., Suite 210 - Annapolis MD 21403 - - Support information and updates available at - http://www.scyld.com/network/netsemi.html - [link no longer provides useful info -jgarzik] - - - TODO: - * big endian support with CFG:BEM instead of cpu_to_le32 -*/ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/timer.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/pci.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/ethtool.h> -#include <linux/delay.h> -#include <linux/rtnetlink.h> -#include <linux/mii.h> -#include <linux/crc32.h> -#include <linux/bitops.h> -#include <linux/prefetch.h> -#include <asm/processor.h> /* Processor type for cache alignment. */ -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/uaccess.h> - -#define DRV_NAME "natsemi" -#define DRV_VERSION "2.1" -#define DRV_RELDATE "Sept 11, 2006" - -#define RX_OFFSET 2 - -/* Updated to recommendations in pci-skeleton v2.03. */ - -/* The user-configurable values. - These may be modified when a driver module is loaded.*/ - -#define NATSEMI_DEF_MSG (NETIF_MSG_DRV | \ - NETIF_MSG_LINK | \ - NETIF_MSG_WOL | \ - NETIF_MSG_RX_ERR | \ - NETIF_MSG_TX_ERR) -static int debug = -1; - -static int mtu; - -/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). - This chip uses a 512 element hash table based on the Ethernet CRC. */ -static const int multicast_filter_limit = 100; - -/* Set the copy breakpoint for the copy-only-tiny-frames scheme. - Setting to > 1518 effectively disables this feature. */ -static int rx_copybreak; - -static int dspcfg_workaround = 1; - -/* Used to pass the media type, etc. - Both 'options[]' and 'full_duplex[]' should exist for driver - interoperability. - The media type is usually passed in 'options[]'. -*/ -#define MAX_UNITS 8 /* More are supported, limit only on options */ -static int options[MAX_UNITS]; -static int full_duplex[MAX_UNITS]; - -/* Operational parameters that are set at compile time. */ - -/* Keep the ring sizes a power of two for compile efficiency. - The compiler will convert <unsigned>'%'<2^N> into a bit mask. - Making the Tx ring too large decreases the effectiveness of channel - bonding and packet priority. - There are no ill effects from too-large receive rings. */ -#define TX_RING_SIZE 16 -#define TX_QUEUE_LEN 10 /* Limit ring entries actually used, min 4. */ -#define RX_RING_SIZE 32 - -/* Operational parameters that usually are not changed. */ -/* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (2*HZ) - -#define NATSEMI_HW_TIMEOUT 400 -#define NATSEMI_TIMER_FREQ 5*HZ -#define NATSEMI_PG0_NREGS 64 -#define NATSEMI_RFDR_NREGS 8 -#define NATSEMI_PG1_NREGS 4 -#define NATSEMI_NREGS (NATSEMI_PG0_NREGS + NATSEMI_RFDR_NREGS + \ - NATSEMI_PG1_NREGS) -#define NATSEMI_REGS_VER 1 /* v1 added RFDR registers */ -#define NATSEMI_REGS_SIZE (NATSEMI_NREGS * sizeof(u32)) - -/* Buffer sizes: - * The nic writes 32-bit values, even if the upper bytes of - * a 32-bit value are beyond the end of the buffer. - */ -#define NATSEMI_HEADERS 22 /* 2*mac,type,vlan,crc */ -#define NATSEMI_PADDING 16 /* 2 bytes should be sufficient */ -#define NATSEMI_LONGPKT 1518 /* limit for normal packets */ -#define NATSEMI_RX_LIMIT 2046 /* maximum supported by hardware */ - -/* These identify the driver base version and may not be removed. */ -static const char version[] __devinitconst = - KERN_INFO DRV_NAME " dp8381x driver, version " - DRV_VERSION ", " DRV_RELDATE "\n" - " originally by Donald Becker <becker@scyld.com>\n" - " 2.4.x kernel port by Jeff Garzik, Tjeerd Mulder\n"; - -MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); -MODULE_DESCRIPTION("National Semiconductor DP8381x series PCI Ethernet driver"); -MODULE_LICENSE("GPL"); - -module_param(mtu, int, 0); -module_param(debug, int, 0); -module_param(rx_copybreak, int, 0); -module_param(dspcfg_workaround, int, 0); -module_param_array(options, int, NULL, 0); -module_param_array(full_duplex, int, NULL, 0); -MODULE_PARM_DESC(mtu, "DP8381x MTU (all boards)"); -MODULE_PARM_DESC(debug, "DP8381x default debug level"); -MODULE_PARM_DESC(rx_copybreak, - "DP8381x copy breakpoint for copy-only-tiny-frames"); -MODULE_PARM_DESC(dspcfg_workaround, "DP8381x: control DspCfg workaround"); -MODULE_PARM_DESC(options, - "DP8381x: Bits 0-3: media type, bit 17: full duplex"); -MODULE_PARM_DESC(full_duplex, "DP8381x full duplex setting(s) (1)"); - -/* - Theory of Operation - -I. Board Compatibility - -This driver is designed for National Semiconductor DP83815 PCI Ethernet NIC. -It also works with other chips in in the DP83810 series. - -II. Board-specific settings - -This driver requires the PCI interrupt line to be valid. -It honors the EEPROM-set values. - -III. Driver operation - -IIIa. Ring buffers - -This driver uses two statically allocated fixed-size descriptor lists -formed into rings by a branch from the final descriptor to the beginning of -the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. -The NatSemi design uses a 'next descriptor' pointer that the driver forms -into a list. - -IIIb/c. Transmit/Receive Structure - -This driver uses a zero-copy receive and transmit scheme. -The driver allocates full frame size skbuffs for the Rx ring buffers at -open() time and passes the skb->data field to the chip as receive data -buffers. When an incoming frame is less than RX_COPYBREAK bytes long, -a fresh skbuff is allocated and the frame is copied to the new skbuff. -When the incoming frame is larger, the skbuff is passed directly up the -protocol stack. Buffers consumed this way are replaced by newly allocated -skbuffs in a later phase of receives. - -The RX_COPYBREAK value is chosen to trade-off the memory wasted by -using a full-sized skbuff for small frames vs. the copying costs of larger -frames. New boards are typically used in generously configured machines -and the underfilled buffers have negligible impact compared to the benefit of -a single allocation size, so the default value of zero results in never -copying packets. When copying is done, the cost is usually mitigated by using -a combined copy/checksum routine. Copying also preloads the cache, which is -most useful with small frames. - -A subtle aspect of the operation is that unaligned buffers are not permitted -by the hardware. Thus the IP header at offset 14 in an ethernet frame isn't -longword aligned for further processing. On copies frames are put into the -skbuff at an offset of "+2", 16-byte aligning the IP header. - -IIId. Synchronization - -Most operations are synchronized on the np->lock irq spinlock, except the -receive and transmit paths which are synchronised using a combination of -hardware descriptor ownership, disabling interrupts and NAPI poll scheduling. - -IVb. References - -http://www.scyld.com/expert/100mbps.html -http://www.scyld.com/expert/NWay.html -Datasheet is available from: -http://www.national.com/pf/DP/DP83815.html - -IVc. Errata - -None characterised. -*/ - - - -/* - * Support for fibre connections on Am79C874: - * This phy needs a special setup when connected to a fibre cable. - * http://www.amd.com/files/connectivitysolutions/networking/archivednetworking/22235.pdf - */ -#define PHYID_AM79C874 0x0022561b - -enum { - MII_MCTRL = 0x15, /* mode control register */ - MII_FX_SEL = 0x0001, /* 100BASE-FX (fiber) */ - MII_EN_SCRM = 0x0004, /* enable scrambler (tp) */ -}; - -enum { - NATSEMI_FLAG_IGNORE_PHY = 0x1, -}; - -/* array of board data directly indexed by pci_tbl[x].driver_data */ -static struct { - const char *name; - unsigned long flags; - unsigned int eeprom_size; -} natsemi_pci_info[] __devinitdata = { - { "Aculab E1/T1 PMXc cPCI carrier card", NATSEMI_FLAG_IGNORE_PHY, 128 }, - { "NatSemi DP8381[56]", 0, 24 }, -}; - -static DEFINE_PCI_DEVICE_TABLE(natsemi_pci_tbl) = { - { PCI_VENDOR_ID_NS, 0x0020, 0x12d9, 0x000c, 0, 0, 0 }, - { PCI_VENDOR_ID_NS, 0x0020, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, - { } /* terminate list */ -}; -MODULE_DEVICE_TABLE(pci, natsemi_pci_tbl); - -/* Offsets to the device registers. - Unlike software-only systems, device drivers interact with complex hardware. - It's not useful to define symbolic names for every register bit in the - device. -*/ -enum register_offsets { - ChipCmd = 0x00, - ChipConfig = 0x04, - EECtrl = 0x08, - PCIBusCfg = 0x0C, - IntrStatus = 0x10, - IntrMask = 0x14, - IntrEnable = 0x18, - IntrHoldoff = 0x1C, /* DP83816 only */ - TxRingPtr = 0x20, - TxConfig = 0x24, - RxRingPtr = 0x30, - RxConfig = 0x34, - ClkRun = 0x3C, - WOLCmd = 0x40, - PauseCmd = 0x44, - RxFilterAddr = 0x48, - RxFilterData = 0x4C, - BootRomAddr = 0x50, - BootRomData = 0x54, - SiliconRev = 0x58, - StatsCtrl = 0x5C, - StatsData = 0x60, - RxPktErrs = 0x60, - RxMissed = 0x68, - RxCRCErrs = 0x64, - BasicControl = 0x80, - BasicStatus = 0x84, - AnegAdv = 0x90, - AnegPeer = 0x94, - PhyStatus = 0xC0, - MIntrCtrl = 0xC4, - MIntrStatus = 0xC8, - PhyCtrl = 0xE4, - - /* These are from the spec, around page 78... on a separate table. - * The meaning of these registers depend on the value of PGSEL. */ - PGSEL = 0xCC, - PMDCSR = 0xE4, - TSTDAT = 0xFC, - DSPCFG = 0xF4, - SDCFG = 0xF8 -}; -/* the values for the 'magic' registers above (PGSEL=1) */ -#define PMDCSR_VAL 0x189c /* enable preferred adaptation circuitry */ -#define TSTDAT_VAL 0x0 -#define DSPCFG_VAL 0x5040 -#define SDCFG_VAL 0x008c /* set voltage thresholds for Signal Detect */ -#define DSPCFG_LOCK 0x20 /* coefficient lock bit in DSPCFG */ -#define DSPCFG_COEF 0x1000 /* see coefficient (in TSTDAT) bit in DSPCFG */ -#define TSTDAT_FIXED 0xe8 /* magic number for bad coefficients */ - -/* misc PCI space registers */ -enum pci_register_offsets { - PCIPM = 0x44, -}; - -enum ChipCmd_bits { - ChipReset = 0x100, - RxReset = 0x20, - TxReset = 0x10, - RxOff = 0x08, - RxOn = 0x04, - TxOff = 0x02, - TxOn = 0x01, -}; - -enum ChipConfig_bits { - CfgPhyDis = 0x200, - CfgPhyRst = 0x400, - CfgExtPhy = 0x1000, - CfgAnegEnable = 0x2000, - CfgAneg100 = 0x4000, - CfgAnegFull = 0x8000, - CfgAnegDone = 0x8000000, - CfgFullDuplex = 0x20000000, - CfgSpeed100 = 0x40000000, - CfgLink = 0x80000000, -}; - -enum EECtrl_bits { - EE_ShiftClk = 0x04, - EE_DataIn = 0x01, - EE_ChipSelect = 0x08, - EE_DataOut = 0x02, - MII_Data = 0x10, - MII_Write = 0x20, - MII_ShiftClk = 0x40, -}; - -enum PCIBusCfg_bits { - EepromReload = 0x4, -}; - -/* Bits in the interrupt status/mask registers. */ -enum IntrStatus_bits { - IntrRxDone = 0x0001, - IntrRxIntr = 0x0002, - IntrRxErr = 0x0004, - IntrRxEarly = 0x0008, - IntrRxIdle = 0x0010, - IntrRxOverrun = 0x0020, - IntrTxDone = 0x0040, - IntrTxIntr = 0x0080, - IntrTxErr = 0x0100, - IntrTxIdle = 0x0200, - IntrTxUnderrun = 0x0400, - StatsMax = 0x0800, - SWInt = 0x1000, - WOLPkt = 0x2000, - LinkChange = 0x4000, - IntrHighBits = 0x8000, - RxStatusFIFOOver = 0x10000, - IntrPCIErr = 0xf00000, - RxResetDone = 0x1000000, - TxResetDone = 0x2000000, - IntrAbnormalSummary = 0xCD20, -}; - -/* - * Default Interrupts: - * Rx OK, Rx Packet Error, Rx Overrun, - * Tx OK, Tx Packet Error, Tx Underrun, - * MIB Service, Phy Interrupt, High Bits, - * Rx Status FIFO overrun, - * Received Target Abort, Received Master Abort, - * Signalled System Error, Received Parity Error - */ -#define DEFAULT_INTR 0x00f1cd65 - -enum TxConfig_bits { - TxDrthMask = 0x3f, - TxFlthMask = 0x3f00, - TxMxdmaMask = 0x700000, - TxMxdma_512 = 0x0, - TxMxdma_4 = 0x100000, - TxMxdma_8 = 0x200000, - TxMxdma_16 = 0x300000, - TxMxdma_32 = 0x400000, - TxMxdma_64 = 0x500000, - TxMxdma_128 = 0x600000, - TxMxdma_256 = 0x700000, - TxCollRetry = 0x800000, - TxAutoPad = 0x10000000, - TxMacLoop = 0x20000000, - TxHeartIgn = 0x40000000, - TxCarrierIgn = 0x80000000 -}; - -/* - * Tx Configuration: - * - 256 byte DMA burst length - * - fill threshold 512 bytes (i.e. restart DMA when 512 bytes are free) - * - 64 bytes initial drain threshold (i.e. begin actual transmission - * when 64 byte are in the fifo) - * - on tx underruns, increase drain threshold by 64. - * - at most use a drain threshold of 1472 bytes: The sum of the fill - * threshold and the drain threshold must be less than 2016 bytes. - * - */ -#define TX_FLTH_VAL ((512/32) << 8) -#define TX_DRTH_VAL_START (64/32) -#define TX_DRTH_VAL_INC 2 -#define TX_DRTH_VAL_LIMIT (1472/32) - -enum RxConfig_bits { - RxDrthMask = 0x3e, - RxMxdmaMask = 0x700000, - RxMxdma_512 = 0x0, - RxMxdma_4 = 0x100000, - RxMxdma_8 = 0x200000, - RxMxdma_16 = 0x300000, - RxMxdma_32 = 0x400000, - RxMxdma_64 = 0x500000, - RxMxdma_128 = 0x600000, - RxMxdma_256 = 0x700000, - RxAcceptLong = 0x8000000, - RxAcceptTx = 0x10000000, - RxAcceptRunt = 0x40000000, - RxAcceptErr = 0x80000000 -}; -#define RX_DRTH_VAL (128/8) - -enum ClkRun_bits { - PMEEnable = 0x100, - PMEStatus = 0x8000, -}; - -enum WolCmd_bits { - WakePhy = 0x1, - WakeUnicast = 0x2, - WakeMulticast = 0x4, - WakeBroadcast = 0x8, - WakeArp = 0x10, - WakePMatch0 = 0x20, - WakePMatch1 = 0x40, - WakePMatch2 = 0x80, - WakePMatch3 = 0x100, - WakeMagic = 0x200, - WakeMagicSecure = 0x400, - SecureHack = 0x100000, - WokePhy = 0x400000, - WokeUnicast = 0x800000, - WokeMulticast = 0x1000000, - WokeBroadcast = 0x2000000, - WokeArp = 0x4000000, - WokePMatch0 = 0x8000000, - WokePMatch1 = 0x10000000, - WokePMatch2 = 0x20000000, - WokePMatch3 = 0x40000000, - WokeMagic = 0x80000000, - WakeOptsSummary = 0x7ff -}; - -enum RxFilterAddr_bits { - RFCRAddressMask = 0x3ff, - AcceptMulticast = 0x00200000, - AcceptMyPhys = 0x08000000, - AcceptAllPhys = 0x10000000, - AcceptAllMulticast = 0x20000000, - AcceptBroadcast = 0x40000000, - RxFilterEnable = 0x80000000 -}; - -enum StatsCtrl_bits { - StatsWarn = 0x1, - StatsFreeze = 0x2, - StatsClear = 0x4, - StatsStrobe = 0x8, -}; - -enum MIntrCtrl_bits { - MICRIntEn = 0x2, -}; - -enum PhyCtrl_bits { - PhyAddrMask = 0x1f, -}; - -#define PHY_ADDR_NONE 32 -#define PHY_ADDR_INTERNAL 1 - -/* values we might find in the silicon revision register */ -#define SRR_DP83815_C 0x0302 -#define SRR_DP83815_D 0x0403 -#define SRR_DP83816_A4 0x0504 -#define SRR_DP83816_A5 0x0505 - -/* The Rx and Tx buffer descriptors. */ -/* Note that using only 32 bit fields simplifies conversion to big-endian - architectures. */ -struct netdev_desc { - __le32 next_desc; - __le32 cmd_status; - __le32 addr; - __le32 software_use; -}; - -/* Bits in network_desc.status */ -enum desc_status_bits { - DescOwn=0x80000000, DescMore=0x40000000, DescIntr=0x20000000, - DescNoCRC=0x10000000, DescPktOK=0x08000000, - DescSizeMask=0xfff, - - DescTxAbort=0x04000000, DescTxFIFO=0x02000000, - DescTxCarrier=0x01000000, DescTxDefer=0x00800000, - DescTxExcDefer=0x00400000, DescTxOOWCol=0x00200000, - DescTxExcColl=0x00100000, DescTxCollCount=0x000f0000, - - DescRxAbort=0x04000000, DescRxOver=0x02000000, - DescRxDest=0x01800000, DescRxLong=0x00400000, - DescRxRunt=0x00200000, DescRxInvalid=0x00100000, - DescRxCRC=0x00080000, DescRxAlign=0x00040000, - DescRxLoop=0x00020000, DesRxColl=0x00010000, -}; - -struct netdev_private { - /* Descriptor rings first for alignment */ - dma_addr_t ring_dma; - struct netdev_desc *rx_ring; - struct netdev_desc *tx_ring; - /* The addresses of receive-in-place skbuffs */ - struct sk_buff *rx_skbuff[RX_RING_SIZE]; - dma_addr_t rx_dma[RX_RING_SIZE]; - /* address of a sent-in-place packet/buffer, for later free() */ - struct sk_buff *tx_skbuff[TX_RING_SIZE]; - dma_addr_t tx_dma[TX_RING_SIZE]; - struct net_device *dev; - struct napi_struct napi; - /* Media monitoring timer */ - struct timer_list timer; - /* Frequently used values: keep some adjacent for cache effect */ - struct pci_dev *pci_dev; - struct netdev_desc *rx_head_desc; - /* Producer/consumer ring indices */ - unsigned int cur_rx, dirty_rx; - unsigned int cur_tx, dirty_tx; - /* Based on MTU+slack. */ - unsigned int rx_buf_sz; - int oom; - /* Interrupt status */ - u32 intr_status; - /* Do not touch the nic registers */ - int hands_off; - /* Don't pay attention to the reported link state. */ - int ignore_phy; - /* external phy that is used: only valid if dev->if_port != PORT_TP */ - int mii; - int phy_addr_external; - unsigned int full_duplex; - /* Rx filter */ - u32 cur_rx_mode; - u32 rx_filter[16]; - /* FIFO and PCI burst thresholds */ - u32 tx_config, rx_config; - /* original contents of ClkRun register */ - u32 SavedClkRun; - /* silicon revision */ - u32 srr; - /* expected DSPCFG value */ - u16 dspcfg; - int dspcfg_workaround; - /* parms saved in ethtool format */ - u16 speed; /* The forced speed, 10Mb, 100Mb, gigabit */ - u8 duplex; /* Duplex, half or full */ - u8 autoneg; /* Autonegotiation enabled */ - /* MII transceiver section */ - u16 advertising; - unsigned int iosize; - spinlock_t lock; - u32 msg_enable; - /* EEPROM data */ - int eeprom_size; -}; - -static void move_int_phy(struct net_device *dev, int addr); -static int eeprom_read(void __iomem *ioaddr, int location); -static int mdio_read(struct net_device *dev, int reg); -static void mdio_write(struct net_device *dev, int reg, u16 data); -static void init_phy_fixup(struct net_device *dev); -static int miiport_read(struct net_device *dev, int phy_id, int reg); -static void miiport_write(struct net_device *dev, int phy_id, int reg, u16 data); -static int find_mii(struct net_device *dev); -static void natsemi_reset(struct net_device *dev); -static void natsemi_reload_eeprom(struct net_device *dev); -static void natsemi_stop_rxtx(struct net_device *dev); -static int netdev_open(struct net_device *dev); -static void do_cable_magic(struct net_device *dev); -static void undo_cable_magic(struct net_device *dev); -static void check_link(struct net_device *dev); -static void netdev_timer(unsigned long data); -static void dump_ring(struct net_device *dev); -static void ns_tx_timeout(struct net_device *dev); -static int alloc_ring(struct net_device *dev); -static void refill_rx(struct net_device *dev); -static void init_ring(struct net_device *dev); -static void drain_tx(struct net_device *dev); -static void drain_ring(struct net_device *dev); -static void free_ring(struct net_device *dev); -static void reinit_ring(struct net_device *dev); -static void init_registers(struct net_device *dev); -static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev); -static irqreturn_t intr_handler(int irq, void *dev_instance); -static void netdev_error(struct net_device *dev, int intr_status); -static int natsemi_poll(struct napi_struct *napi, int budget); -static void netdev_rx(struct net_device *dev, int *work_done, int work_to_do); -static void netdev_tx_done(struct net_device *dev); -static int natsemi_change_mtu(struct net_device *dev, int new_mtu); -#ifdef CONFIG_NET_POLL_CONTROLLER -static void natsemi_poll_controller(struct net_device *dev); -#endif -static void __set_rx_mode(struct net_device *dev); -static void set_rx_mode(struct net_device *dev); -static void __get_stats(struct net_device *dev); -static struct net_device_stats *get_stats(struct net_device *dev); -static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); -static int netdev_set_wol(struct net_device *dev, u32 newval); -static int netdev_get_wol(struct net_device *dev, u32 *supported, u32 *cur); -static int netdev_set_sopass(struct net_device *dev, u8 *newval); -static int netdev_get_sopass(struct net_device *dev, u8 *data); -static int netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd); -static int netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd); -static void enable_wol_mode(struct net_device *dev, int enable_intr); -static int netdev_close(struct net_device *dev); -static int netdev_get_regs(struct net_device *dev, u8 *buf); -static int netdev_get_eeprom(struct net_device *dev, u8 *buf); -static const struct ethtool_ops ethtool_ops; - -#define NATSEMI_ATTR(_name) \ -static ssize_t natsemi_show_##_name(struct device *dev, \ - struct device_attribute *attr, char *buf); \ - static ssize_t natsemi_set_##_name(struct device *dev, \ - struct device_attribute *attr, \ - const char *buf, size_t count); \ - static DEVICE_ATTR(_name, 0644, natsemi_show_##_name, natsemi_set_##_name) - -#define NATSEMI_CREATE_FILE(_dev, _name) \ - device_create_file(&_dev->dev, &dev_attr_##_name) -#define NATSEMI_REMOVE_FILE(_dev, _name) \ - device_remove_file(&_dev->dev, &dev_attr_##_name) - -NATSEMI_ATTR(dspcfg_workaround); - -static ssize_t natsemi_show_dspcfg_workaround(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct netdev_private *np = netdev_priv(to_net_dev(dev)); - - return sprintf(buf, "%s\n", np->dspcfg_workaround ? "on" : "off"); -} - -static ssize_t natsemi_set_dspcfg_workaround(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct netdev_private *np = netdev_priv(to_net_dev(dev)); - int new_setting; - unsigned long flags; - - /* Find out the new setting */ - if (!strncmp("on", buf, count - 1) || !strncmp("1", buf, count - 1)) - new_setting = 1; - else if (!strncmp("off", buf, count - 1) || - !strncmp("0", buf, count - 1)) - new_setting = 0; - else - return count; - - spin_lock_irqsave(&np->lock, flags); - - np->dspcfg_workaround = new_setting; - - spin_unlock_irqrestore(&np->lock, flags); - - return count; -} - -static inline void __iomem *ns_ioaddr(struct net_device *dev) -{ - return (void __iomem *) dev->base_addr; -} - -static inline void natsemi_irq_enable(struct net_device *dev) -{ - writel(1, ns_ioaddr(dev) + IntrEnable); - readl(ns_ioaddr(dev) + IntrEnable); -} - -static inline void natsemi_irq_disable(struct net_device *dev) -{ - writel(0, ns_ioaddr(dev) + IntrEnable); - readl(ns_ioaddr(dev) + IntrEnable); -} - -static void move_int_phy(struct net_device *dev, int addr) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = ns_ioaddr(dev); - int target = 31; - - /* - * The internal phy is visible on the external mii bus. Therefore we must - * move it away before we can send commands to an external phy. - * There are two addresses we must avoid: - * - the address on the external phy that is used for transmission. - * - the address that we want to access. User space can access phys - * on the mii bus with SIOCGMIIREG/SIOCSMIIREG, independent from the - * phy that is used for transmission. - */ - - if (target == addr) - target--; - if (target == np->phy_addr_external) - target--; - writew(target, ioaddr + PhyCtrl); - readw(ioaddr + PhyCtrl); - udelay(1); -} - -static void __devinit natsemi_init_media (struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - u32 tmp; - - if (np->ignore_phy) - netif_carrier_on(dev); - else - netif_carrier_off(dev); - - /* get the initial settings from hardware */ - tmp = mdio_read(dev, MII_BMCR); - np->speed = (tmp & BMCR_SPEED100)? SPEED_100 : SPEED_10; - np->duplex = (tmp & BMCR_FULLDPLX)? DUPLEX_FULL : DUPLEX_HALF; - np->autoneg = (tmp & BMCR_ANENABLE)? AUTONEG_ENABLE: AUTONEG_DISABLE; - np->advertising= mdio_read(dev, MII_ADVERTISE); - - if ((np->advertising & ADVERTISE_ALL) != ADVERTISE_ALL && - netif_msg_probe(np)) { - printk(KERN_INFO "natsemi %s: Transceiver default autonegotiation %s " - "10%s %s duplex.\n", - pci_name(np->pci_dev), - (mdio_read(dev, MII_BMCR) & BMCR_ANENABLE)? - "enabled, advertise" : "disabled, force", - (np->advertising & - (ADVERTISE_100FULL|ADVERTISE_100HALF))? - "0" : "", - (np->advertising & - (ADVERTISE_100FULL|ADVERTISE_10FULL))? - "full" : "half"); - } - if (netif_msg_probe(np)) - printk(KERN_INFO - "natsemi %s: Transceiver status %#04x advertising %#04x.\n", - pci_name(np->pci_dev), mdio_read(dev, MII_BMSR), - np->advertising); - -} - -static const struct net_device_ops natsemi_netdev_ops = { - .ndo_open = netdev_open, - .ndo_stop = netdev_close, - .ndo_start_xmit = start_tx, - .ndo_get_stats = get_stats, - .ndo_set_multicast_list = set_rx_mode, - .ndo_change_mtu = natsemi_change_mtu, - .ndo_do_ioctl = netdev_ioctl, - .ndo_tx_timeout = ns_tx_timeout, - .ndo_set_mac_address = eth_mac_addr, - .ndo_validate_addr = eth_validate_addr, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = natsemi_poll_controller, -#endif -}; - -static int __devinit natsemi_probe1 (struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct net_device *dev; - struct netdev_private *np; - int i, option, irq, chip_idx = ent->driver_data; - static int find_cnt = -1; - resource_size_t iostart; - unsigned long iosize; - void __iomem *ioaddr; - const int pcibar = 1; /* PCI base address register */ - int prev_eedata; - u32 tmp; - -/* when built into the kernel, we only print version if device is found */ -#ifndef MODULE - static int printed_version; - if (!printed_version++) - printk(version); -#endif - - i = pci_enable_device(pdev); - if (i) return i; - - /* natsemi has a non-standard PM control register - * in PCI config space. Some boards apparently need - * to be brought to D0 in this manner. - */ - pci_read_config_dword(pdev, PCIPM, &tmp); - if (tmp & PCI_PM_CTRL_STATE_MASK) { - /* D0 state, disable PME assertion */ - u32 newtmp = tmp & ~PCI_PM_CTRL_STATE_MASK; - pci_write_config_dword(pdev, PCIPM, newtmp); - } - - find_cnt++; - iostart = pci_resource_start(pdev, pcibar); - iosize = pci_resource_len(pdev, pcibar); - irq = pdev->irq; - - pci_set_master(pdev); - - dev = alloc_etherdev(sizeof (struct netdev_private)); - if (!dev) - return -ENOMEM; - SET_NETDEV_DEV(dev, &pdev->dev); - - i = pci_request_regions(pdev, DRV_NAME); - if (i) - goto err_pci_request_regions; - - ioaddr = ioremap(iostart, iosize); - if (!ioaddr) { - i = -ENOMEM; - goto err_ioremap; - } - - /* Work around the dropped serial bit. */ - prev_eedata = eeprom_read(ioaddr, 6); - for (i = 0; i < 3; i++) { - int eedata = eeprom_read(ioaddr, i + 7); - dev->dev_addr[i*2] = (eedata << 1) + (prev_eedata >> 15); - dev->dev_addr[i*2+1] = eedata >> 7; - prev_eedata = eedata; - } - - /* Store MAC Address in perm_addr */ - memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); - - dev->base_addr = (unsigned long __force) ioaddr; - dev->irq = irq; - - np = netdev_priv(dev); - netif_napi_add(dev, &np->napi, natsemi_poll, 64); - np->dev = dev; - - np->pci_dev = pdev; - pci_set_drvdata(pdev, dev); - np->iosize = iosize; - spin_lock_init(&np->lock); - np->msg_enable = (debug >= 0) ? (1<<debug)-1 : NATSEMI_DEF_MSG; - np->hands_off = 0; - np->intr_status = 0; - np->eeprom_size = natsemi_pci_info[chip_idx].eeprom_size; - if (natsemi_pci_info[chip_idx].flags & NATSEMI_FLAG_IGNORE_PHY) - np->ignore_phy = 1; - else - np->ignore_phy = 0; - np->dspcfg_workaround = dspcfg_workaround; - - /* Initial port: - * - If configured to ignore the PHY set up for external. - * - If the nic was configured to use an external phy and if find_mii - * finds a phy: use external port, first phy that replies. - * - Otherwise: internal port. - * Note that the phy address for the internal phy doesn't matter: - * The address would be used to access a phy over the mii bus, but - * the internal phy is accessed through mapped registers. - */ - if (np->ignore_phy || readl(ioaddr + ChipConfig) & CfgExtPhy) - dev->if_port = PORT_MII; - else - dev->if_port = PORT_TP; - /* Reset the chip to erase previous misconfiguration. */ - natsemi_reload_eeprom(dev); - natsemi_reset(dev); - - if (dev->if_port != PORT_TP) { - np->phy_addr_external = find_mii(dev); - /* If we're ignoring the PHY it doesn't matter if we can't - * find one. */ - if (!np->ignore_phy && np->phy_addr_external == PHY_ADDR_NONE) { - dev->if_port = PORT_TP; - np->phy_addr_external = PHY_ADDR_INTERNAL; - } - } else { - np->phy_addr_external = PHY_ADDR_INTERNAL; - } - - option = find_cnt < MAX_UNITS ? options[find_cnt] : 0; - if (dev->mem_start) - option = dev->mem_start; - - /* The lower four bits are the media type. */ - if (option) { - if (option & 0x200) - np->full_duplex = 1; - if (option & 15) - printk(KERN_INFO - "natsemi %s: ignoring user supplied media type %d", - pci_name(np->pci_dev), option & 15); - } - if (find_cnt < MAX_UNITS && full_duplex[find_cnt]) - np->full_duplex = 1; - - dev->netdev_ops = &natsemi_netdev_ops; - dev->watchdog_timeo = TX_TIMEOUT; - - SET_ETHTOOL_OPS(dev, ðtool_ops); - - if (mtu) - dev->mtu = mtu; - - natsemi_init_media(dev); - - /* save the silicon revision for later querying */ - np->srr = readl(ioaddr + SiliconRev); - if (netif_msg_hw(np)) - printk(KERN_INFO "natsemi %s: silicon revision %#04x.\n", - pci_name(np->pci_dev), np->srr); - - i = register_netdev(dev); - if (i) - goto err_register_netdev; - - if (NATSEMI_CREATE_FILE(pdev, dspcfg_workaround)) - goto err_create_file; - - if (netif_msg_drv(np)) { - printk(KERN_INFO "natsemi %s: %s at %#08llx " - "(%s), %pM, IRQ %d", - dev->name, natsemi_pci_info[chip_idx].name, - (unsigned long long)iostart, pci_name(np->pci_dev), - dev->dev_addr, irq); - if (dev->if_port == PORT_TP) - printk(", port TP.\n"); - else if (np->ignore_phy) - printk(", port MII, ignoring PHY\n"); - else - printk(", port MII, phy ad %d.\n", np->phy_addr_external); - } - return 0; - - err_create_file: - unregister_netdev(dev); - - err_register_netdev: - iounmap(ioaddr); - - err_ioremap: - pci_release_regions(pdev); - pci_set_drvdata(pdev, NULL); - - err_pci_request_regions: - free_netdev(dev); - return i; -} - - -/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. - The EEPROM code is for the common 93c06/46 EEPROMs with 6 bit addresses. */ - -/* Delay between EEPROM clock transitions. - No extra delay is needed with 33Mhz PCI, but future 66Mhz access may need - a delay. Note that pre-2.0.34 kernels had a cache-alignment bug that - made udelay() unreliable. - The old method of using an ISA access as a delay, __SLOW_DOWN_IO__, is - deprecated. -*/ -#define eeprom_delay(ee_addr) readl(ee_addr) - -#define EE_Write0 (EE_ChipSelect) -#define EE_Write1 (EE_ChipSelect | EE_DataIn) - -/* The EEPROM commands include the alway-set leading bit. */ -enum EEPROM_Cmds { - EE_WriteCmd=(5 << 6), EE_ReadCmd=(6 << 6), EE_EraseCmd=(7 << 6), -}; - -static int eeprom_read(void __iomem *addr, int location) -{ - int i; - int retval = 0; - void __iomem *ee_addr = addr + EECtrl; - int read_cmd = location | EE_ReadCmd; - - writel(EE_Write0, ee_addr); - - /* Shift the read command bits out. */ - for (i = 10; i >= 0; i--) { - short dataval = (read_cmd & (1 << i)) ? EE_Write1 : EE_Write0; - writel(dataval, ee_addr); - eeprom_delay(ee_addr); - writel(dataval | EE_ShiftClk, ee_addr); - eeprom_delay(ee_addr); - } - writel(EE_ChipSelect, ee_addr); - eeprom_delay(ee_addr); - - for (i = 0; i < 16; i++) { - writel(EE_ChipSelect | EE_ShiftClk, ee_addr); - eeprom_delay(ee_addr); - retval |= (readl(ee_addr) & EE_DataOut) ? 1 << i : 0; - writel(EE_ChipSelect, ee_addr); - eeprom_delay(ee_addr); - } - - /* Terminate the EEPROM access. */ - writel(EE_Write0, ee_addr); - writel(0, ee_addr); - return retval; -} - -/* MII transceiver control section. - * The 83815 series has an internal transceiver, and we present the - * internal management registers as if they were MII connected. - * External Phy registers are referenced through the MII interface. - */ - -/* clock transitions >= 20ns (25MHz) - * One readl should be good to PCI @ 100MHz - */ -#define mii_delay(ioaddr) readl(ioaddr + EECtrl) - -static int mii_getbit (struct net_device *dev) -{ - int data; - void __iomem *ioaddr = ns_ioaddr(dev); - - writel(MII_ShiftClk, ioaddr + EECtrl); - data = readl(ioaddr + EECtrl); - writel(0, ioaddr + EECtrl); - mii_delay(ioaddr); - return (data & MII_Data)? 1 : 0; -} - -static void mii_send_bits (struct net_device *dev, u32 data, int len) -{ - u32 i; - void __iomem *ioaddr = ns_ioaddr(dev); - - for (i = (1 << (len-1)); i; i >>= 1) - { - u32 mdio_val = MII_Write | ((data & i)? MII_Data : 0); - writel(mdio_val, ioaddr + EECtrl); - mii_delay(ioaddr); - writel(mdio_val | MII_ShiftClk, ioaddr + EECtrl); - mii_delay(ioaddr); - } - writel(0, ioaddr + EECtrl); - mii_delay(ioaddr); -} - -static int miiport_read(struct net_device *dev, int phy_id, int reg) -{ - u32 cmd; - int i; - u32 retval = 0; - - /* Ensure sync */ - mii_send_bits (dev, 0xffffffff, 32); - /* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */ - /* ST,OP = 0110'b for read operation */ - cmd = (0x06 << 10) | (phy_id << 5) | reg; - mii_send_bits (dev, cmd, 14); - /* Turnaround */ - if (mii_getbit (dev)) - return 0; - /* Read data */ - for (i = 0; i < 16; i++) { - retval <<= 1; - retval |= mii_getbit (dev); - } - /* End cycle */ - mii_getbit (dev); - return retval; -} - -static void miiport_write(struct net_device *dev, int phy_id, int reg, u16 data) -{ - u32 cmd; - - /* Ensure sync */ - mii_send_bits (dev, 0xffffffff, 32); - /* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */ - /* ST,OP,AAAAA,RRRRR,TA = 0101xxxxxxxxxx10'b = 0x5002 for write */ - cmd = (0x5002 << 16) | (phy_id << 23) | (reg << 18) | data; - mii_send_bits (dev, cmd, 32); - /* End cycle */ - mii_getbit (dev); -} - -static int mdio_read(struct net_device *dev, int reg) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = ns_ioaddr(dev); - - /* The 83815 series has two ports: - * - an internal transceiver - * - an external mii bus - */ - if (dev->if_port == PORT_TP) - return readw(ioaddr+BasicControl+(reg<<2)); - else - return miiport_read(dev, np->phy_addr_external, reg); -} - -static void mdio_write(struct net_device *dev, int reg, u16 data) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = ns_ioaddr(dev); - - /* The 83815 series has an internal transceiver; handle separately */ - if (dev->if_port == PORT_TP) - writew(data, ioaddr+BasicControl+(reg<<2)); - else - miiport_write(dev, np->phy_addr_external, reg, data); -} - -static void init_phy_fixup(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = ns_ioaddr(dev); - int i; - u32 cfg; - u16 tmp; - - /* restore stuff lost when power was out */ - tmp = mdio_read(dev, MII_BMCR); - if (np->autoneg == AUTONEG_ENABLE) { - /* renegotiate if something changed */ - if ((tmp & BMCR_ANENABLE) == 0 || - np->advertising != mdio_read(dev, MII_ADVERTISE)) - { - /* turn on autonegotiation and force negotiation */ - tmp |= (BMCR_ANENABLE | BMCR_ANRESTART); - mdio_write(dev, MII_ADVERTISE, np->advertising); - } - } else { - /* turn off auto negotiation, set speed and duplexity */ - tmp &= ~(BMCR_ANENABLE | BMCR_SPEED100 | BMCR_FULLDPLX); - if (np->speed == SPEED_100) - tmp |= BMCR_SPEED100; - if (np->duplex == DUPLEX_FULL) - tmp |= BMCR_FULLDPLX; - /* - * Note: there is no good way to inform the link partner - * that our capabilities changed. The user has to unplug - * and replug the network cable after some changes, e.g. - * after switching from 10HD, autoneg off to 100 HD, - * autoneg off. - */ - } - mdio_write(dev, MII_BMCR, tmp); - readl(ioaddr + ChipConfig); - udelay(1); - - /* find out what phy this is */ - np->mii = (mdio_read(dev, MII_PHYSID1) << 16) - + mdio_read(dev, MII_PHYSID2); - - /* handle external phys here */ - switch (np->mii) { - case PHYID_AM79C874: - /* phy specific configuration for fibre/tp operation */ - tmp = mdio_read(dev, MII_MCTRL); - tmp &= ~(MII_FX_SEL | MII_EN_SCRM); - if (dev->if_port == PORT_FIBRE) - tmp |= MII_FX_SEL; - else - tmp |= MII_EN_SCRM; - mdio_write(dev, MII_MCTRL, tmp); - break; - default: - break; - } - cfg = readl(ioaddr + ChipConfig); - if (cfg & CfgExtPhy) - return; - - /* On page 78 of the spec, they recommend some settings for "optimum - performance" to be done in sequence. These settings optimize some - of the 100Mbit autodetection circuitry. They say we only want to - do this for rev C of the chip, but engineers at NSC (Bradley - Kennedy) recommends always setting them. If you don't, you get - errors on some autonegotiations that make the device unusable. - - It seems that the DSP needs a few usec to reinitialize after - the start of the phy. Just retry writing these values until they - stick. - */ - for (i=0;i<NATSEMI_HW_TIMEOUT;i++) { - - int dspcfg; - writew(1, ioaddr + PGSEL); - writew(PMDCSR_VAL, ioaddr + PMDCSR); - writew(TSTDAT_VAL, ioaddr + TSTDAT); - np->dspcfg = (np->srr <= SRR_DP83815_C)? - DSPCFG_VAL : (DSPCFG_COEF | readw(ioaddr + DSPCFG)); - writew(np->dspcfg, ioaddr + DSPCFG); - writew(SDCFG_VAL, ioaddr + SDCFG); - writew(0, ioaddr + PGSEL); - readl(ioaddr + ChipConfig); - udelay(10); - - writew(1, ioaddr + PGSEL); - dspcfg = readw(ioaddr + DSPCFG); - writew(0, ioaddr + PGSEL); - if (np->dspcfg == dspcfg) - break; - } - - if (netif_msg_link(np)) { - if (i==NATSEMI_HW_TIMEOUT) { - printk(KERN_INFO - "%s: DSPCFG mismatch after retrying for %d usec.\n", - dev->name, i*10); - } else { - printk(KERN_INFO - "%s: DSPCFG accepted after %d usec.\n", - dev->name, i*10); - } - } - /* - * Enable PHY Specific event based interrupts. Link state change - * and Auto-Negotiation Completion are among the affected. - * Read the intr status to clear it (needed for wake events). - */ - readw(ioaddr + MIntrStatus); - writew(MICRIntEn, ioaddr + MIntrCtrl); -} - -static int switch_port_external(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = ns_ioaddr(dev); - u32 cfg; - - cfg = readl(ioaddr + ChipConfig); - if (cfg & CfgExtPhy) - return 0; - - if (netif_msg_link(np)) { - printk(KERN_INFO "%s: switching to external transceiver.\n", - dev->name); - } - - /* 1) switch back to external phy */ - writel(cfg | (CfgExtPhy | CfgPhyDis), ioaddr + ChipConfig); - readl(ioaddr + ChipConfig); - udelay(1); - - /* 2) reset the external phy: */ - /* resetting the external PHY has been known to cause a hub supplying - * power over Ethernet to kill the power. We don't want to kill - * power to this computer, so we avoid resetting the phy. - */ - - /* 3) reinit the phy fixup, it got lost during power down. */ - move_int_phy(dev, np->phy_addr_external); - init_phy_fixup(dev); - - return 1; -} - -static int switch_port_internal(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = ns_ioaddr(dev); - int i; - u32 cfg; - u16 bmcr; - - cfg = readl(ioaddr + ChipConfig); - if (!(cfg &CfgExtPhy)) - return 0; - - if (netif_msg_link(np)) { - printk(KERN_INFO "%s: switching to internal transceiver.\n", - dev->name); - } - /* 1) switch back to internal phy: */ - cfg = cfg & ~(CfgExtPhy | CfgPhyDis); - writel(cfg, ioaddr + ChipConfig); - readl(ioaddr + ChipConfig); - udelay(1); - - /* 2) reset the internal phy: */ - bmcr = readw(ioaddr+BasicControl+(MII_BMCR<<2)); - writel(bmcr | BMCR_RESET, ioaddr+BasicControl+(MII_BMCR<<2)); - readl(ioaddr + ChipConfig); - udelay(10); - for (i=0;i<NATSEMI_HW_TIMEOUT;i++) { - bmcr = readw(ioaddr+BasicControl+(MII_BMCR<<2)); - if (!(bmcr & BMCR_RESET)) - break; - udelay(10); - } - if (i==NATSEMI_HW_TIMEOUT && netif_msg_link(np)) { - printk(KERN_INFO - "%s: phy reset did not complete in %d usec.\n", - dev->name, i*10); - } - /* 3) reinit the phy fixup, it got lost during power down. */ - init_phy_fixup(dev); - - return 1; -} - -/* Scan for a PHY on the external mii bus. - * There are two tricky points: - * - Do not scan while the internal phy is enabled. The internal phy will - * crash: e.g. reads from the DSPCFG register will return odd values and - * the nasty random phy reset code will reset the nic every few seconds. - * - The internal phy must be moved around, an external phy could - * have the same address as the internal phy. - */ -static int find_mii(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - int tmp; - int i; - int did_switch; - - /* Switch to external phy */ - did_switch = switch_port_external(dev); - - /* Scan the possible phy addresses: - * - * PHY address 0 means that the phy is in isolate mode. Not yet - * supported due to lack of test hardware. User space should - * handle it through ethtool. - */ - for (i = 1; i <= 31; i++) { - move_int_phy(dev, i); - tmp = miiport_read(dev, i, MII_BMSR); - if (tmp != 0xffff && tmp != 0x0000) { - /* found something! */ - np->mii = (mdio_read(dev, MII_PHYSID1) << 16) - + mdio_read(dev, MII_PHYSID2); - if (netif_msg_probe(np)) { - printk(KERN_INFO "natsemi %s: found external phy %08x at address %d.\n", - pci_name(np->pci_dev), np->mii, i); - } - break; - } - } - /* And switch back to internal phy: */ - if (did_switch) - switch_port_internal(dev); - return i; -} - -/* CFG bits [13:16] [18:23] */ -#define CFG_RESET_SAVE 0xfde000 -/* WCSR bits [0:4] [9:10] */ -#define WCSR_RESET_SAVE 0x61f -/* RFCR bits [20] [22] [27:31] */ -#define RFCR_RESET_SAVE 0xf8500000 - -static void natsemi_reset(struct net_device *dev) -{ - int i; - u32 cfg; - u32 wcsr; - u32 rfcr; - u16 pmatch[3]; - u16 sopass[3]; - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = ns_ioaddr(dev); - - /* - * Resetting the chip causes some registers to be lost. - * Natsemi suggests NOT reloading the EEPROM while live, so instead - * we save the state that would have been loaded from EEPROM - * on a normal power-up (see the spec EEPROM map). This assumes - * whoever calls this will follow up with init_registers() eventually. - */ - - /* CFG */ - cfg = readl(ioaddr + ChipConfig) & CFG_RESET_SAVE; - /* WCSR */ - wcsr = readl(ioaddr + WOLCmd) & WCSR_RESET_SAVE; - /* RFCR */ - rfcr = readl(ioaddr + RxFilterAddr) & RFCR_RESET_SAVE; - /* PMATCH */ - for (i = 0; i < 3; i++) { - writel(i*2, ioaddr + RxFilterAddr); - pmatch[i] = readw(ioaddr + RxFilterData); - } - /* SOPAS */ - for (i = 0; i < 3; i++) { - writel(0xa+(i*2), ioaddr + RxFilterAddr); - sopass[i] = readw(ioaddr + RxFilterData); - } - - /* now whack the chip */ - writel(ChipReset, ioaddr + ChipCmd); - for (i=0;i<NATSEMI_HW_TIMEOUT;i++) { - if (!(readl(ioaddr + ChipCmd) & ChipReset)) - break; - udelay(5); - } - if (i==NATSEMI_HW_TIMEOUT) { - printk(KERN_WARNING "%s: reset did not complete in %d usec.\n", - dev->name, i*5); - } else if (netif_msg_hw(np)) { - printk(KERN_DEBUG "%s: reset completed in %d usec.\n", - dev->name, i*5); - } - - /* restore CFG */ - cfg |= readl(ioaddr + ChipConfig) & ~CFG_RESET_SAVE; - /* turn on external phy if it was selected */ - if (dev->if_port == PORT_TP) - cfg &= ~(CfgExtPhy | CfgPhyDis); - else - cfg |= (CfgExtPhy | CfgPhyDis); - writel(cfg, ioaddr + ChipConfig); - /* restore WCSR */ - wcsr |= readl(ioaddr + WOLCmd) & ~WCSR_RESET_SAVE; - writel(wcsr, ioaddr + WOLCmd); - /* read RFCR */ - rfcr |= readl(ioaddr + RxFilterAddr) & ~RFCR_RESET_SAVE; - /* restore PMATCH */ - for (i = 0; i < 3; i++) { - writel(i*2, ioaddr + RxFilterAddr); - writew(pmatch[i], ioaddr + RxFilterData); - } - for (i = 0; i < 3; i++) { - writel(0xa+(i*2), ioaddr + RxFilterAddr); - writew(sopass[i], ioaddr + RxFilterData); - } - /* restore RFCR */ - writel(rfcr, ioaddr + RxFilterAddr); -} - -static void reset_rx(struct net_device *dev) -{ - int i; - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = ns_ioaddr(dev); - - np->intr_status &= ~RxResetDone; - - writel(RxReset, ioaddr + ChipCmd); - - for (i=0;i<NATSEMI_HW_TIMEOUT;i++) { - np->intr_status |= readl(ioaddr + IntrStatus); - if (np->intr_status & RxResetDone) - break; - udelay(15); - } - if (i==NATSEMI_HW_TIMEOUT) { - printk(KERN_WARNING "%s: RX reset did not complete in %d usec.\n", - dev->name, i*15); - } else if (netif_msg_hw(np)) { - printk(KERN_WARNING "%s: RX reset took %d usec.\n", - dev->name, i*15); - } -} - -static void natsemi_reload_eeprom(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = ns_ioaddr(dev); - int i; - - writel(EepromReload, ioaddr + PCIBusCfg); - for (i=0;i<NATSEMI_HW_TIMEOUT;i++) { - udelay(50); - if (!(readl(ioaddr + PCIBusCfg) & EepromReload)) - break; - } - if (i==NATSEMI_HW_TIMEOUT) { - printk(KERN_WARNING "natsemi %s: EEPROM did not reload in %d usec.\n", - pci_name(np->pci_dev), i*50); - } else if (netif_msg_hw(np)) { - printk(KERN_DEBUG "natsemi %s: EEPROM reloaded in %d usec.\n", - pci_name(np->pci_dev), i*50); - } -} - -static void natsemi_stop_rxtx(struct net_device *dev) -{ - void __iomem * ioaddr = ns_ioaddr(dev); - struct netdev_private *np = netdev_priv(dev); - int i; - - writel(RxOff | TxOff, ioaddr + ChipCmd); - for(i=0;i< NATSEMI_HW_TIMEOUT;i++) { - if ((readl(ioaddr + ChipCmd) & (TxOn|RxOn)) == 0) - break; - udelay(5); - } - if (i==NATSEMI_HW_TIMEOUT) { - printk(KERN_WARNING "%s: Tx/Rx process did not stop in %d usec.\n", - dev->name, i*5); - } else if (netif_msg_hw(np)) { - printk(KERN_DEBUG "%s: Tx/Rx process stopped in %d usec.\n", - dev->name, i*5); - } -} - -static int netdev_open(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - int i; - - /* Reset the chip, just in case. */ - natsemi_reset(dev); - - i = request_irq(dev->irq, intr_handler, IRQF_SHARED, dev->name, dev); - if (i) return i; - - if (netif_msg_ifup(np)) - printk(KERN_DEBUG "%s: netdev_open() irq %d.\n", - dev->name, dev->irq); - i = alloc_ring(dev); - if (i < 0) { - free_irq(dev->irq, dev); - return i; - } - napi_enable(&np->napi); - - init_ring(dev); - spin_lock_irq(&np->lock); - init_registers(dev); - /* now set the MAC address according to dev->dev_addr */ - for (i = 0; i < 3; i++) { - u16 mac = (dev->dev_addr[2*i+1]<<8) + dev->dev_addr[2*i]; - - writel(i*2, ioaddr + RxFilterAddr); - writew(mac, ioaddr + RxFilterData); - } - writel(np->cur_rx_mode, ioaddr + RxFilterAddr); - spin_unlock_irq(&np->lock); - - netif_start_queue(dev); - - if (netif_msg_ifup(np)) - printk(KERN_DEBUG "%s: Done netdev_open(), status: %#08x.\n", - dev->name, (int)readl(ioaddr + ChipCmd)); - - /* Set the timer to check for link beat. */ - init_timer(&np->timer); - np->timer.expires = round_jiffies(jiffies + NATSEMI_TIMER_FREQ); - np->timer.data = (unsigned long)dev; - np->timer.function = netdev_timer; /* timer handler */ - add_timer(&np->timer); - - return 0; -} - -static void do_cable_magic(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = ns_ioaddr(dev); - - if (dev->if_port != PORT_TP) - return; - - if (np->srr >= SRR_DP83816_A5) - return; - - /* - * 100 MBit links with short cables can trip an issue with the chip. - * The problem manifests as lots of CRC errors and/or flickering - * activity LED while idle. This process is based on instructions - * from engineers at National. - */ - if (readl(ioaddr + ChipConfig) & CfgSpeed100) { - u16 data; - - writew(1, ioaddr + PGSEL); - /* - * coefficient visibility should already be enabled via - * DSPCFG | 0x1000 - */ - data = readw(ioaddr + TSTDAT) & 0xff; - /* - * the value must be negative, and within certain values - * (these values all come from National) - */ - if (!(data & 0x80) || ((data >= 0xd8) && (data <= 0xff))) { - np = netdev_priv(dev); - - /* the bug has been triggered - fix the coefficient */ - writew(TSTDAT_FIXED, ioaddr + TSTDAT); - /* lock the value */ - data = readw(ioaddr + DSPCFG); - np->dspcfg = data | DSPCFG_LOCK; - writew(np->dspcfg, ioaddr + DSPCFG); - } - writew(0, ioaddr + PGSEL); - } -} - -static void undo_cable_magic(struct net_device *dev) -{ - u16 data; - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - - if (dev->if_port != PORT_TP) - return; - - if (np->srr >= SRR_DP83816_A5) - return; - - writew(1, ioaddr + PGSEL); - /* make sure the lock bit is clear */ - data = readw(ioaddr + DSPCFG); - np->dspcfg = data & ~DSPCFG_LOCK; - writew(np->dspcfg, ioaddr + DSPCFG); - writew(0, ioaddr + PGSEL); -} - -static void check_link(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - int duplex = np->duplex; - u16 bmsr; - - /* If we are ignoring the PHY then don't try reading it. */ - if (np->ignore_phy) - goto propagate_state; - - /* The link status field is latched: it remains low after a temporary - * link failure until it's read. We need the current link status, - * thus read twice. - */ - mdio_read(dev, MII_BMSR); - bmsr = mdio_read(dev, MII_BMSR); - - if (!(bmsr & BMSR_LSTATUS)) { - if (netif_carrier_ok(dev)) { - if (netif_msg_link(np)) - printk(KERN_NOTICE "%s: link down.\n", - dev->name); - netif_carrier_off(dev); - undo_cable_magic(dev); - } - return; - } - if (!netif_carrier_ok(dev)) { - if (netif_msg_link(np)) - printk(KERN_NOTICE "%s: link up.\n", dev->name); - netif_carrier_on(dev); - do_cable_magic(dev); - } - - duplex = np->full_duplex; - if (!duplex) { - if (bmsr & BMSR_ANEGCOMPLETE) { - int tmp = mii_nway_result( - np->advertising & mdio_read(dev, MII_LPA)); - if (tmp == LPA_100FULL || tmp == LPA_10FULL) - duplex = 1; - } else if (mdio_read(dev, MII_BMCR) & BMCR_FULLDPLX) - duplex = 1; - } - -propagate_state: - /* if duplex is set then bit 28 must be set, too */ - if (duplex ^ !!(np->rx_config & RxAcceptTx)) { - if (netif_msg_link(np)) - printk(KERN_INFO - "%s: Setting %s-duplex based on negotiated " - "link capability.\n", dev->name, - duplex ? "full" : "half"); - if (duplex) { - np->rx_config |= RxAcceptTx; - np->tx_config |= TxCarrierIgn | TxHeartIgn; - } else { - np->rx_config &= ~RxAcceptTx; - np->tx_config &= ~(TxCarrierIgn | TxHeartIgn); - } - writel(np->tx_config, ioaddr + TxConfig); - writel(np->rx_config, ioaddr + RxConfig); - } -} - -static void init_registers(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - - init_phy_fixup(dev); - - /* clear any interrupts that are pending, such as wake events */ - readl(ioaddr + IntrStatus); - - writel(np->ring_dma, ioaddr + RxRingPtr); - writel(np->ring_dma + RX_RING_SIZE * sizeof(struct netdev_desc), - ioaddr + TxRingPtr); - - /* Initialize other registers. - * Configure the PCI bus bursts and FIFO thresholds. - * Configure for standard, in-spec Ethernet. - * Start with half-duplex. check_link will update - * to the correct settings. - */ - - /* DRTH: 2: start tx if 64 bytes are in the fifo - * FLTH: 0x10: refill with next packet if 512 bytes are free - * MXDMA: 0: up to 256 byte bursts. - * MXDMA must be <= FLTH - * ECRETRY=1 - * ATP=1 - */ - np->tx_config = TxAutoPad | TxCollRetry | TxMxdma_256 | - TX_FLTH_VAL | TX_DRTH_VAL_START; - writel(np->tx_config, ioaddr + TxConfig); - - /* DRTH 0x10: start copying to memory if 128 bytes are in the fifo - * MXDMA 0: up to 256 byte bursts - */ - np->rx_config = RxMxdma_256 | RX_DRTH_VAL; - /* if receive ring now has bigger buffers than normal, enable jumbo */ - if (np->rx_buf_sz > NATSEMI_LONGPKT) - np->rx_config |= RxAcceptLong; - - writel(np->rx_config, ioaddr + RxConfig); - - /* Disable PME: - * The PME bit is initialized from the EEPROM contents. - * PCI cards probably have PME disabled, but motherboard - * implementations may have PME set to enable WakeOnLan. - * With PME set the chip will scan incoming packets but - * nothing will be written to memory. */ - np->SavedClkRun = readl(ioaddr + ClkRun); - writel(np->SavedClkRun & ~PMEEnable, ioaddr + ClkRun); - if (np->SavedClkRun & PMEStatus && netif_msg_wol(np)) { - printk(KERN_NOTICE "%s: Wake-up event %#08x\n", - dev->name, readl(ioaddr + WOLCmd)); - } - - check_link(dev); - __set_rx_mode(dev); - - /* Enable interrupts by setting the interrupt mask. */ - writel(DEFAULT_INTR, ioaddr + IntrMask); - natsemi_irq_enable(dev); - - writel(RxOn | TxOn, ioaddr + ChipCmd); - writel(StatsClear, ioaddr + StatsCtrl); /* Clear Stats */ -} - -/* - * netdev_timer: - * Purpose: - * 1) check for link changes. Usually they are handled by the MII interrupt - * but it doesn't hurt to check twice. - * 2) check for sudden death of the NIC: - * It seems that a reference set for this chip went out with incorrect info, - * and there exist boards that aren't quite right. An unexpected voltage - * drop can cause the PHY to get itself in a weird state (basically reset). - * NOTE: this only seems to affect revC chips. The user can disable - * this check via dspcfg_workaround sysfs option. - * 3) check of death of the RX path due to OOM - */ -static void netdev_timer(unsigned long data) -{ - struct net_device *dev = (struct net_device *)data; - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - int next_tick = NATSEMI_TIMER_FREQ; - - if (netif_msg_timer(np)) { - /* DO NOT read the IntrStatus register, - * a read clears any pending interrupts. - */ - printk(KERN_DEBUG "%s: Media selection timer tick.\n", - dev->name); - } - - if (dev->if_port == PORT_TP) { - u16 dspcfg; - - spin_lock_irq(&np->lock); - /* check for a nasty random phy-reset - use dspcfg as a flag */ - writew(1, ioaddr+PGSEL); - dspcfg = readw(ioaddr+DSPCFG); - writew(0, ioaddr+PGSEL); - if (np->dspcfg_workaround && dspcfg != np->dspcfg) { - if (!netif_queue_stopped(dev)) { - spin_unlock_irq(&np->lock); - if (netif_msg_drv(np)) - printk(KERN_NOTICE "%s: possible phy reset: " - "re-initializing\n", dev->name); - disable_irq(dev->irq); - spin_lock_irq(&np->lock); - natsemi_stop_rxtx(dev); - dump_ring(dev); - reinit_ring(dev); - init_registers(dev); - spin_unlock_irq(&np->lock); - enable_irq(dev->irq); - } else { - /* hurry back */ - next_tick = HZ; - spin_unlock_irq(&np->lock); - } - } else { - /* init_registers() calls check_link() for the above case */ - check_link(dev); - spin_unlock_irq(&np->lock); - } - } else { - spin_lock_irq(&np->lock); - check_link(dev); - spin_unlock_irq(&np->lock); - } - if (np->oom) { - disable_irq(dev->irq); - np->oom = 0; - refill_rx(dev); - enable_irq(dev->irq); - if (!np->oom) { - writel(RxOn, ioaddr + ChipCmd); - } else { - next_tick = 1; - } - } - - if (next_tick > 1) - mod_timer(&np->timer, round_jiffies(jiffies + next_tick)); - else - mod_timer(&np->timer, jiffies + next_tick); -} - -static void dump_ring(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - - if (netif_msg_pktdata(np)) { - int i; - printk(KERN_DEBUG " Tx ring at %p:\n", np->tx_ring); - for (i = 0; i < TX_RING_SIZE; i++) { - printk(KERN_DEBUG " #%d desc. %#08x %#08x %#08x.\n", - i, np->tx_ring[i].next_desc, - np->tx_ring[i].cmd_status, - np->tx_ring[i].addr); - } - printk(KERN_DEBUG " Rx ring %p:\n", np->rx_ring); - for (i = 0; i < RX_RING_SIZE; i++) { - printk(KERN_DEBUG " #%d desc. %#08x %#08x %#08x.\n", - i, np->rx_ring[i].next_desc, - np->rx_ring[i].cmd_status, - np->rx_ring[i].addr); - } - } -} - -static void ns_tx_timeout(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - - disable_irq(dev->irq); - spin_lock_irq(&np->lock); - if (!np->hands_off) { - if (netif_msg_tx_err(np)) - printk(KERN_WARNING - "%s: Transmit timed out, status %#08x," - " resetting...\n", - dev->name, readl(ioaddr + IntrStatus)); - dump_ring(dev); - - natsemi_reset(dev); - reinit_ring(dev); - init_registers(dev); - } else { - printk(KERN_WARNING - "%s: tx_timeout while in hands_off state?\n", - dev->name); - } - spin_unlock_irq(&np->lock); - enable_irq(dev->irq); - - dev->trans_start = jiffies; /* prevent tx timeout */ - dev->stats.tx_errors++; - netif_wake_queue(dev); -} - -static int alloc_ring(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - np->rx_ring = pci_alloc_consistent(np->pci_dev, - sizeof(struct netdev_desc) * (RX_RING_SIZE+TX_RING_SIZE), - &np->ring_dma); - if (!np->rx_ring) - return -ENOMEM; - np->tx_ring = &np->rx_ring[RX_RING_SIZE]; - return 0; -} - -static void refill_rx(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - - /* Refill the Rx ring buffers. */ - for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) { - struct sk_buff *skb; - int entry = np->dirty_rx % RX_RING_SIZE; - if (np->rx_skbuff[entry] == NULL) { - unsigned int buflen = np->rx_buf_sz+NATSEMI_PADDING; - skb = dev_alloc_skb(buflen); - np->rx_skbuff[entry] = skb; - if (skb == NULL) - break; /* Better luck next round. */ - skb->dev = dev; /* Mark as being used by this device. */ - np->rx_dma[entry] = pci_map_single(np->pci_dev, - skb->data, buflen, PCI_DMA_FROMDEVICE); - np->rx_ring[entry].addr = cpu_to_le32(np->rx_dma[entry]); - } - np->rx_ring[entry].cmd_status = cpu_to_le32(np->rx_buf_sz); - } - if (np->cur_rx - np->dirty_rx == RX_RING_SIZE) { - if (netif_msg_rx_err(np)) - printk(KERN_WARNING "%s: going OOM.\n", dev->name); - np->oom = 1; - } -} - -static void set_bufsize(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - if (dev->mtu <= ETH_DATA_LEN) - np->rx_buf_sz = ETH_DATA_LEN + NATSEMI_HEADERS; - else - np->rx_buf_sz = dev->mtu + NATSEMI_HEADERS; -} - -/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ -static void init_ring(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - int i; - - /* 1) TX ring */ - np->dirty_tx = np->cur_tx = 0; - for (i = 0; i < TX_RING_SIZE; i++) { - np->tx_skbuff[i] = NULL; - np->tx_ring[i].next_desc = cpu_to_le32(np->ring_dma - +sizeof(struct netdev_desc) - *((i+1)%TX_RING_SIZE+RX_RING_SIZE)); - np->tx_ring[i].cmd_status = 0; - } - - /* 2) RX ring */ - np->dirty_rx = 0; - np->cur_rx = RX_RING_SIZE; - np->oom = 0; - set_bufsize(dev); - - np->rx_head_desc = &np->rx_ring[0]; - - /* Please be careful before changing this loop - at least gcc-2.95.1 - * miscompiles it otherwise. - */ - /* Initialize all Rx descriptors. */ - for (i = 0; i < RX_RING_SIZE; i++) { - np->rx_ring[i].next_desc = cpu_to_le32(np->ring_dma - +sizeof(struct netdev_desc) - *((i+1)%RX_RING_SIZE)); - np->rx_ring[i].cmd_status = cpu_to_le32(DescOwn); - np->rx_skbuff[i] = NULL; - } - refill_rx(dev); - dump_ring(dev); -} - -static void drain_tx(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - int i; - - for (i = 0; i < TX_RING_SIZE; i++) { - if (np->tx_skbuff[i]) { - pci_unmap_single(np->pci_dev, - np->tx_dma[i], np->tx_skbuff[i]->len, - PCI_DMA_TODEVICE); - dev_kfree_skb(np->tx_skbuff[i]); - dev->stats.tx_dropped++; - } - np->tx_skbuff[i] = NULL; - } -} - -static void drain_rx(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - unsigned int buflen = np->rx_buf_sz; - int i; - - /* Free all the skbuffs in the Rx queue. */ - for (i = 0; i < RX_RING_SIZE; i++) { - np->rx_ring[i].cmd_status = 0; - np->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */ - if (np->rx_skbuff[i]) { - pci_unmap_single(np->pci_dev, np->rx_dma[i], - buflen + NATSEMI_PADDING, - PCI_DMA_FROMDEVICE); - dev_kfree_skb(np->rx_skbuff[i]); - } - np->rx_skbuff[i] = NULL; - } -} - -static void drain_ring(struct net_device *dev) -{ - drain_rx(dev); - drain_tx(dev); -} - -static void free_ring(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - pci_free_consistent(np->pci_dev, - sizeof(struct netdev_desc) * (RX_RING_SIZE+TX_RING_SIZE), - np->rx_ring, np->ring_dma); -} - -static void reinit_rx(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - int i; - - /* RX Ring */ - np->dirty_rx = 0; - np->cur_rx = RX_RING_SIZE; - np->rx_head_desc = &np->rx_ring[0]; - /* Initialize all Rx descriptors. */ - for (i = 0; i < RX_RING_SIZE; i++) - np->rx_ring[i].cmd_status = cpu_to_le32(DescOwn); - - refill_rx(dev); -} - -static void reinit_ring(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - int i; - - /* drain TX ring */ - drain_tx(dev); - np->dirty_tx = np->cur_tx = 0; - for (i=0;i<TX_RING_SIZE;i++) - np->tx_ring[i].cmd_status = 0; - - reinit_rx(dev); -} - -static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - unsigned entry; - unsigned long flags; - - /* Note: Ordering is important here, set the field with the - "ownership" bit last, and only then increment cur_tx. */ - - /* Calculate the next Tx descriptor entry. */ - entry = np->cur_tx % TX_RING_SIZE; - - np->tx_skbuff[entry] = skb; - np->tx_dma[entry] = pci_map_single(np->pci_dev, - skb->data,skb->len, PCI_DMA_TODEVICE); - - np->tx_ring[entry].addr = cpu_to_le32(np->tx_dma[entry]); - - spin_lock_irqsave(&np->lock, flags); - - if (!np->hands_off) { - np->tx_ring[entry].cmd_status = cpu_to_le32(DescOwn | skb->len); - /* StrongARM: Explicitly cache flush np->tx_ring and - * skb->data,skb->len. */ - wmb(); - np->cur_tx++; - if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1) { - netdev_tx_done(dev); - if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1) - netif_stop_queue(dev); - } - /* Wake the potentially-idle transmit channel. */ - writel(TxOn, ioaddr + ChipCmd); - } else { - dev_kfree_skb_irq(skb); - dev->stats.tx_dropped++; - } - spin_unlock_irqrestore(&np->lock, flags); - - if (netif_msg_tx_queued(np)) { - printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n", - dev->name, np->cur_tx, entry); - } - return NETDEV_TX_OK; -} - -static void netdev_tx_done(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - - for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { - int entry = np->dirty_tx % TX_RING_SIZE; - if (np->tx_ring[entry].cmd_status & cpu_to_le32(DescOwn)) - break; - if (netif_msg_tx_done(np)) - printk(KERN_DEBUG - "%s: tx frame #%d finished, status %#08x.\n", - dev->name, np->dirty_tx, - le32_to_cpu(np->tx_ring[entry].cmd_status)); - if (np->tx_ring[entry].cmd_status & cpu_to_le32(DescPktOK)) { - dev->stats.tx_packets++; - dev->stats.tx_bytes += np->tx_skbuff[entry]->len; - } else { /* Various Tx errors */ - int tx_status = - le32_to_cpu(np->tx_ring[entry].cmd_status); - if (tx_status & (DescTxAbort|DescTxExcColl)) - dev->stats.tx_aborted_errors++; - if (tx_status & DescTxFIFO) - dev->stats.tx_fifo_errors++; - if (tx_status & DescTxCarrier) - dev->stats.tx_carrier_errors++; - if (tx_status & DescTxOOWCol) - dev->stats.tx_window_errors++; - dev->stats.tx_errors++; - } - pci_unmap_single(np->pci_dev,np->tx_dma[entry], - np->tx_skbuff[entry]->len, - PCI_DMA_TODEVICE); - /* Free the original skb. */ - dev_kfree_skb_irq(np->tx_skbuff[entry]); - np->tx_skbuff[entry] = NULL; - } - if (netif_queue_stopped(dev) && - np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) { - /* The ring is no longer full, wake queue. */ - netif_wake_queue(dev); - } -} - -/* The interrupt handler doesn't actually handle interrupts itself, it - * schedules a NAPI poll if there is anything to do. */ -static irqreturn_t intr_handler(int irq, void *dev_instance) -{ - struct net_device *dev = dev_instance; - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - - /* Reading IntrStatus automatically acknowledges so don't do - * that while interrupts are disabled, (for example, while a - * poll is scheduled). */ - if (np->hands_off || !readl(ioaddr + IntrEnable)) - return IRQ_NONE; - - np->intr_status = readl(ioaddr + IntrStatus); - - if (!np->intr_status) - return IRQ_NONE; - - if (netif_msg_intr(np)) - printk(KERN_DEBUG - "%s: Interrupt, status %#08x, mask %#08x.\n", - dev->name, np->intr_status, - readl(ioaddr + IntrMask)); - - prefetch(&np->rx_skbuff[np->cur_rx % RX_RING_SIZE]); - - if (napi_schedule_prep(&np->napi)) { - /* Disable interrupts and register for poll */ - natsemi_irq_disable(dev); - __napi_schedule(&np->napi); - } else - printk(KERN_WARNING - "%s: Ignoring interrupt, status %#08x, mask %#08x.\n", - dev->name, np->intr_status, - readl(ioaddr + IntrMask)); - - return IRQ_HANDLED; -} - -/* This is the NAPI poll routine. As well as the standard RX handling - * it also handles all other interrupts that the chip might raise. - */ -static int natsemi_poll(struct napi_struct *napi, int budget) -{ - struct netdev_private *np = container_of(napi, struct netdev_private, napi); - struct net_device *dev = np->dev; - void __iomem * ioaddr = ns_ioaddr(dev); - int work_done = 0; - - do { - if (netif_msg_intr(np)) - printk(KERN_DEBUG - "%s: Poll, status %#08x, mask %#08x.\n", - dev->name, np->intr_status, - readl(ioaddr + IntrMask)); - - /* netdev_rx() may read IntrStatus again if the RX state - * machine falls over so do it first. */ - if (np->intr_status & - (IntrRxDone | IntrRxIntr | RxStatusFIFOOver | - IntrRxErr | IntrRxOverrun)) { - netdev_rx(dev, &work_done, budget); - } - - if (np->intr_status & - (IntrTxDone | IntrTxIntr | IntrTxIdle | IntrTxErr)) { - spin_lock(&np->lock); - netdev_tx_done(dev); - spin_unlock(&np->lock); - } - - /* Abnormal error summary/uncommon events handlers. */ - if (np->intr_status & IntrAbnormalSummary) - netdev_error(dev, np->intr_status); - - if (work_done >= budget) - return work_done; - - np->intr_status = readl(ioaddr + IntrStatus); - } while (np->intr_status); - - napi_complete(napi); - - /* Reenable interrupts providing nothing is trying to shut - * the chip down. */ - spin_lock(&np->lock); - if (!np->hands_off) - natsemi_irq_enable(dev); - spin_unlock(&np->lock); - - return work_done; -} - -/* This routine is logically part of the interrupt handler, but separated - for clarity and better register allocation. */ -static void netdev_rx(struct net_device *dev, int *work_done, int work_to_do) -{ - struct netdev_private *np = netdev_priv(dev); - int entry = np->cur_rx % RX_RING_SIZE; - int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx; - s32 desc_status = le32_to_cpu(np->rx_head_desc->cmd_status); - unsigned int buflen = np->rx_buf_sz; - void __iomem * ioaddr = ns_ioaddr(dev); - - /* If the driver owns the next entry it's a new packet. Send it up. */ - while (desc_status < 0) { /* e.g. & DescOwn */ - int pkt_len; - if (netif_msg_rx_status(np)) - printk(KERN_DEBUG - " netdev_rx() entry %d status was %#08x.\n", - entry, desc_status); - if (--boguscnt < 0) - break; - - if (*work_done >= work_to_do) - break; - - (*work_done)++; - - pkt_len = (desc_status & DescSizeMask) - 4; - if ((desc_status&(DescMore|DescPktOK|DescRxLong)) != DescPktOK){ - if (desc_status & DescMore) { - unsigned long flags; - - if (netif_msg_rx_err(np)) - printk(KERN_WARNING - "%s: Oversized(?) Ethernet " - "frame spanned multiple " - "buffers, entry %#08x " - "status %#08x.\n", dev->name, - np->cur_rx, desc_status); - dev->stats.rx_length_errors++; - - /* The RX state machine has probably - * locked up beneath us. Follow the - * reset procedure documented in - * AN-1287. */ - - spin_lock_irqsave(&np->lock, flags); - reset_rx(dev); - reinit_rx(dev); - writel(np->ring_dma, ioaddr + RxRingPtr); - check_link(dev); - spin_unlock_irqrestore(&np->lock, flags); - - /* We'll enable RX on exit from this - * function. */ - break; - - } else { - /* There was an error. */ - dev->stats.rx_errors++; - if (desc_status & (DescRxAbort|DescRxOver)) - dev->stats.rx_over_errors++; - if (desc_status & (DescRxLong|DescRxRunt)) - dev->stats.rx_length_errors++; - if (desc_status & (DescRxInvalid|DescRxAlign)) - dev->stats.rx_frame_errors++; - if (desc_status & DescRxCRC) - dev->stats.rx_crc_errors++; - } - } else if (pkt_len > np->rx_buf_sz) { - /* if this is the tail of a double buffer - * packet, we've already counted the error - * on the first part. Ignore the second half. - */ - } else { - struct sk_buff *skb; - /* Omit CRC size. */ - /* Check if the packet is long enough to accept - * without copying to a minimally-sized skbuff. */ - if (pkt_len < rx_copybreak && - (skb = dev_alloc_skb(pkt_len + RX_OFFSET)) != NULL) { - /* 16 byte align the IP header */ - skb_reserve(skb, RX_OFFSET); - pci_dma_sync_single_for_cpu(np->pci_dev, - np->rx_dma[entry], - buflen, - PCI_DMA_FROMDEVICE); - skb_copy_to_linear_data(skb, - np->rx_skbuff[entry]->data, pkt_len); - skb_put(skb, pkt_len); - pci_dma_sync_single_for_device(np->pci_dev, - np->rx_dma[entry], - buflen, - PCI_DMA_FROMDEVICE); - } else { - pci_unmap_single(np->pci_dev, np->rx_dma[entry], - buflen + NATSEMI_PADDING, - PCI_DMA_FROMDEVICE); - skb_put(skb = np->rx_skbuff[entry], pkt_len); - np->rx_skbuff[entry] = NULL; - } - skb->protocol = eth_type_trans(skb, dev); - netif_receive_skb(skb); - dev->stats.rx_packets++; - dev->stats.rx_bytes += pkt_len; - } - entry = (++np->cur_rx) % RX_RING_SIZE; - np->rx_head_desc = &np->rx_ring[entry]; - desc_status = le32_to_cpu(np->rx_head_desc->cmd_status); - } - refill_rx(dev); - - /* Restart Rx engine if stopped. */ - if (np->oom) - mod_timer(&np->timer, jiffies + 1); - else - writel(RxOn, ioaddr + ChipCmd); -} - -static void netdev_error(struct net_device *dev, int intr_status) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - - spin_lock(&np->lock); - if (intr_status & LinkChange) { - u16 lpa = mdio_read(dev, MII_LPA); - if (mdio_read(dev, MII_BMCR) & BMCR_ANENABLE && - netif_msg_link(np)) { - printk(KERN_INFO - "%s: Autonegotiation advertising" - " %#04x partner %#04x.\n", dev->name, - np->advertising, lpa); - } - - /* read MII int status to clear the flag */ - readw(ioaddr + MIntrStatus); - check_link(dev); - } - if (intr_status & StatsMax) { - __get_stats(dev); - } - if (intr_status & IntrTxUnderrun) { - if ((np->tx_config & TxDrthMask) < TX_DRTH_VAL_LIMIT) { - np->tx_config += TX_DRTH_VAL_INC; - if (netif_msg_tx_err(np)) - printk(KERN_NOTICE - "%s: increased tx threshold, txcfg %#08x.\n", - dev->name, np->tx_config); - } else { - if (netif_msg_tx_err(np)) - printk(KERN_NOTICE - "%s: tx underrun with maximum tx threshold, txcfg %#08x.\n", - dev->name, np->tx_config); - } - writel(np->tx_config, ioaddr + TxConfig); - } - if (intr_status & WOLPkt && netif_msg_wol(np)) { - int wol_status = readl(ioaddr + WOLCmd); - printk(KERN_NOTICE "%s: Link wake-up event %#08x\n", - dev->name, wol_status); - } - if (intr_status & RxStatusFIFOOver) { - if (netif_msg_rx_err(np) && netif_msg_intr(np)) { - printk(KERN_NOTICE "%s: Rx status FIFO overrun\n", - dev->name); - } - dev->stats.rx_fifo_errors++; - dev->stats.rx_errors++; - } - /* Hmmmmm, it's not clear how to recover from PCI faults. */ - if (intr_status & IntrPCIErr) { - printk(KERN_NOTICE "%s: PCI error %#08x\n", dev->name, - intr_status & IntrPCIErr); - dev->stats.tx_fifo_errors++; - dev->stats.tx_errors++; - dev->stats.rx_fifo_errors++; - dev->stats.rx_errors++; - } - spin_unlock(&np->lock); -} - -static void __get_stats(struct net_device *dev) -{ - void __iomem * ioaddr = ns_ioaddr(dev); - - /* The chip only need report frame silently dropped. */ - dev->stats.rx_crc_errors += readl(ioaddr + RxCRCErrs); - dev->stats.rx_missed_errors += readl(ioaddr + RxMissed); -} - -static struct net_device_stats *get_stats(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - - /* The chip only need report frame silently dropped. */ - spin_lock_irq(&np->lock); - if (netif_running(dev) && !np->hands_off) - __get_stats(dev); - spin_unlock_irq(&np->lock); - - return &dev->stats; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void natsemi_poll_controller(struct net_device *dev) -{ - disable_irq(dev->irq); - intr_handler(dev->irq, dev); - enable_irq(dev->irq); -} -#endif - -#define HASH_TABLE 0x200 -static void __set_rx_mode(struct net_device *dev) -{ - void __iomem * ioaddr = ns_ioaddr(dev); - struct netdev_private *np = netdev_priv(dev); - u8 mc_filter[64]; /* Multicast hash filter */ - u32 rx_mode; - - if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ - rx_mode = RxFilterEnable | AcceptBroadcast - | AcceptAllMulticast | AcceptAllPhys | AcceptMyPhys; - } else if ((netdev_mc_count(dev) > multicast_filter_limit) || - (dev->flags & IFF_ALLMULTI)) { - rx_mode = RxFilterEnable | AcceptBroadcast - | AcceptAllMulticast | AcceptMyPhys; - } else { - struct netdev_hw_addr *ha; - int i; - - memset(mc_filter, 0, sizeof(mc_filter)); - netdev_for_each_mc_addr(ha, dev) { - int b = (ether_crc(ETH_ALEN, ha->addr) >> 23) & 0x1ff; - mc_filter[b/8] |= (1 << (b & 0x07)); - } - rx_mode = RxFilterEnable | AcceptBroadcast - | AcceptMulticast | AcceptMyPhys; - for (i = 0; i < 64; i += 2) { - writel(HASH_TABLE + i, ioaddr + RxFilterAddr); - writel((mc_filter[i + 1] << 8) + mc_filter[i], - ioaddr + RxFilterData); - } - } - writel(rx_mode, ioaddr + RxFilterAddr); - np->cur_rx_mode = rx_mode; -} - -static int natsemi_change_mtu(struct net_device *dev, int new_mtu) -{ - if (new_mtu < 64 || new_mtu > NATSEMI_RX_LIMIT-NATSEMI_HEADERS) - return -EINVAL; - - dev->mtu = new_mtu; - - /* synchronized against open : rtnl_lock() held by caller */ - if (netif_running(dev)) { - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - - disable_irq(dev->irq); - spin_lock(&np->lock); - /* stop engines */ - natsemi_stop_rxtx(dev); - /* drain rx queue */ - drain_rx(dev); - /* change buffers */ - set_bufsize(dev); - reinit_rx(dev); - writel(np->ring_dma, ioaddr + RxRingPtr); - /* restart engines */ - writel(RxOn | TxOn, ioaddr + ChipCmd); - spin_unlock(&np->lock); - enable_irq(dev->irq); - } - return 0; -} - -static void set_rx_mode(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - spin_lock_irq(&np->lock); - if (!np->hands_off) - __set_rx_mode(dev); - spin_unlock_irq(&np->lock); -} - -static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) -{ - struct netdev_private *np = netdev_priv(dev); - strncpy(info->driver, DRV_NAME, ETHTOOL_BUSINFO_LEN); - strncpy(info->version, DRV_VERSION, ETHTOOL_BUSINFO_LEN); - strncpy(info->bus_info, pci_name(np->pci_dev), ETHTOOL_BUSINFO_LEN); -} - -static int get_regs_len(struct net_device *dev) -{ - return NATSEMI_REGS_SIZE; -} - -static int get_eeprom_len(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - return np->eeprom_size; -} - -static int get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) -{ - struct netdev_private *np = netdev_priv(dev); - spin_lock_irq(&np->lock); - netdev_get_ecmd(dev, ecmd); - spin_unlock_irq(&np->lock); - return 0; -} - -static int set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) -{ - struct netdev_private *np = netdev_priv(dev); - int res; - spin_lock_irq(&np->lock); - res = netdev_set_ecmd(dev, ecmd); - spin_unlock_irq(&np->lock); - return res; -} - -static void get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) -{ - struct netdev_private *np = netdev_priv(dev); - spin_lock_irq(&np->lock); - netdev_get_wol(dev, &wol->supported, &wol->wolopts); - netdev_get_sopass(dev, wol->sopass); - spin_unlock_irq(&np->lock); -} - -static int set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) -{ - struct netdev_private *np = netdev_priv(dev); - int res; - spin_lock_irq(&np->lock); - netdev_set_wol(dev, wol->wolopts); - res = netdev_set_sopass(dev, wol->sopass); - spin_unlock_irq(&np->lock); - return res; -} - -static void get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf) -{ - struct netdev_private *np = netdev_priv(dev); - regs->version = NATSEMI_REGS_VER; - spin_lock_irq(&np->lock); - netdev_get_regs(dev, buf); - spin_unlock_irq(&np->lock); -} - -static u32 get_msglevel(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - return np->msg_enable; -} - -static void set_msglevel(struct net_device *dev, u32 val) -{ - struct netdev_private *np = netdev_priv(dev); - np->msg_enable = val; -} - -static int nway_reset(struct net_device *dev) -{ - int tmp; - int r = -EINVAL; - /* if autoneg is off, it's an error */ - tmp = mdio_read(dev, MII_BMCR); - if (tmp & BMCR_ANENABLE) { - tmp |= (BMCR_ANRESTART); - mdio_write(dev, MII_BMCR, tmp); - r = 0; - } - return r; -} - -static u32 get_link(struct net_device *dev) -{ - /* LSTATUS is latched low until a read - so read twice */ - mdio_read(dev, MII_BMSR); - return (mdio_read(dev, MII_BMSR)&BMSR_LSTATUS) ? 1:0; -} - -static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data) -{ - struct netdev_private *np = netdev_priv(dev); - u8 *eebuf; - int res; - - eebuf = kmalloc(np->eeprom_size, GFP_KERNEL); - if (!eebuf) - return -ENOMEM; - - eeprom->magic = PCI_VENDOR_ID_NS | (PCI_DEVICE_ID_NS_83815<<16); - spin_lock_irq(&np->lock); - res = netdev_get_eeprom(dev, eebuf); - spin_unlock_irq(&np->lock); - if (!res) - memcpy(data, eebuf+eeprom->offset, eeprom->len); - kfree(eebuf); - return res; -} - -static const struct ethtool_ops ethtool_ops = { - .get_drvinfo = get_drvinfo, - .get_regs_len = get_regs_len, - .get_eeprom_len = get_eeprom_len, - .get_settings = get_settings, - .set_settings = set_settings, - .get_wol = get_wol, - .set_wol = set_wol, - .get_regs = get_regs, - .get_msglevel = get_msglevel, - .set_msglevel = set_msglevel, - .nway_reset = nway_reset, - .get_link = get_link, - .get_eeprom = get_eeprom, -}; - -static int netdev_set_wol(struct net_device *dev, u32 newval) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - u32 data = readl(ioaddr + WOLCmd) & ~WakeOptsSummary; - - /* translate to bitmasks this chip understands */ - if (newval & WAKE_PHY) - data |= WakePhy; - if (newval & WAKE_UCAST) - data |= WakeUnicast; - if (newval & WAKE_MCAST) - data |= WakeMulticast; - if (newval & WAKE_BCAST) - data |= WakeBroadcast; - if (newval & WAKE_ARP) - data |= WakeArp; - if (newval & WAKE_MAGIC) - data |= WakeMagic; - if (np->srr >= SRR_DP83815_D) { - if (newval & WAKE_MAGICSECURE) { - data |= WakeMagicSecure; - } - } - - writel(data, ioaddr + WOLCmd); - - return 0; -} - -static int netdev_get_wol(struct net_device *dev, u32 *supported, u32 *cur) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - u32 regval = readl(ioaddr + WOLCmd); - - *supported = (WAKE_PHY | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST - | WAKE_ARP | WAKE_MAGIC); - - if (np->srr >= SRR_DP83815_D) { - /* SOPASS works on revD and higher */ - *supported |= WAKE_MAGICSECURE; - } - *cur = 0; - - /* translate from chip bitmasks */ - if (regval & WakePhy) - *cur |= WAKE_PHY; - if (regval & WakeUnicast) - *cur |= WAKE_UCAST; - if (regval & WakeMulticast) - *cur |= WAKE_MCAST; - if (regval & WakeBroadcast) - *cur |= WAKE_BCAST; - if (regval & WakeArp) - *cur |= WAKE_ARP; - if (regval & WakeMagic) - *cur |= WAKE_MAGIC; - if (regval & WakeMagicSecure) { - /* this can be on in revC, but it's broken */ - *cur |= WAKE_MAGICSECURE; - } - - return 0; -} - -static int netdev_set_sopass(struct net_device *dev, u8 *newval) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - u16 *sval = (u16 *)newval; - u32 addr; - - if (np->srr < SRR_DP83815_D) { - return 0; - } - - /* enable writing to these registers by disabling the RX filter */ - addr = readl(ioaddr + RxFilterAddr) & ~RFCRAddressMask; - addr &= ~RxFilterEnable; - writel(addr, ioaddr + RxFilterAddr); - - /* write the three words to (undocumented) RFCR vals 0xa, 0xc, 0xe */ - writel(addr | 0xa, ioaddr + RxFilterAddr); - writew(sval[0], ioaddr + RxFilterData); - - writel(addr | 0xc, ioaddr + RxFilterAddr); - writew(sval[1], ioaddr + RxFilterData); - - writel(addr | 0xe, ioaddr + RxFilterAddr); - writew(sval[2], ioaddr + RxFilterData); - - /* re-enable the RX filter */ - writel(addr | RxFilterEnable, ioaddr + RxFilterAddr); - - return 0; -} - -static int netdev_get_sopass(struct net_device *dev, u8 *data) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - u16 *sval = (u16 *)data; - u32 addr; - - if (np->srr < SRR_DP83815_D) { - sval[0] = sval[1] = sval[2] = 0; - return 0; - } - - /* read the three words from (undocumented) RFCR vals 0xa, 0xc, 0xe */ - addr = readl(ioaddr + RxFilterAddr) & ~RFCRAddressMask; - - writel(addr | 0xa, ioaddr + RxFilterAddr); - sval[0] = readw(ioaddr + RxFilterData); - - writel(addr | 0xc, ioaddr + RxFilterAddr); - sval[1] = readw(ioaddr + RxFilterData); - - writel(addr | 0xe, ioaddr + RxFilterAddr); - sval[2] = readw(ioaddr + RxFilterData); - - writel(addr, ioaddr + RxFilterAddr); - - return 0; -} - -static int netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd) -{ - struct netdev_private *np = netdev_priv(dev); - u32 tmp; - - ecmd->port = dev->if_port; - ethtool_cmd_speed_set(ecmd, np->speed); - ecmd->duplex = np->duplex; - ecmd->autoneg = np->autoneg; - ecmd->advertising = 0; - if (np->advertising & ADVERTISE_10HALF) - ecmd->advertising |= ADVERTISED_10baseT_Half; - if (np->advertising & ADVERTISE_10FULL) - ecmd->advertising |= ADVERTISED_10baseT_Full; - if (np->advertising & ADVERTISE_100HALF) - ecmd->advertising |= ADVERTISED_100baseT_Half; - if (np->advertising & ADVERTISE_100FULL) - ecmd->advertising |= ADVERTISED_100baseT_Full; - ecmd->supported = (SUPPORTED_Autoneg | - SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | - SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | - SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_FIBRE); - ecmd->phy_address = np->phy_addr_external; - /* - * We intentionally report the phy address of the external - * phy, even if the internal phy is used. This is necessary - * to work around a deficiency of the ethtool interface: - * It's only possible to query the settings of the active - * port. Therefore - * # ethtool -s ethX port mii - * actually sends an ioctl to switch to port mii with the - * settings that are used for the current active port. - * If we would report a different phy address in this - * command, then - * # ethtool -s ethX port tp;ethtool -s ethX port mii - * would unintentionally change the phy address. - * - * Fortunately the phy address doesn't matter with the - * internal phy... - */ - - /* set information based on active port type */ - switch (ecmd->port) { - default: - case PORT_TP: - ecmd->advertising |= ADVERTISED_TP; - ecmd->transceiver = XCVR_INTERNAL; - break; - case PORT_MII: - ecmd->advertising |= ADVERTISED_MII; - ecmd->transceiver = XCVR_EXTERNAL; - break; - case PORT_FIBRE: - ecmd->advertising |= ADVERTISED_FIBRE; - ecmd->transceiver = XCVR_EXTERNAL; - break; - } - - /* if autonegotiation is on, try to return the active speed/duplex */ - if (ecmd->autoneg == AUTONEG_ENABLE) { - ecmd->advertising |= ADVERTISED_Autoneg; - tmp = mii_nway_result( - np->advertising & mdio_read(dev, MII_LPA)); - if (tmp == LPA_100FULL || tmp == LPA_100HALF) - ethtool_cmd_speed_set(ecmd, SPEED_100); - else - ethtool_cmd_speed_set(ecmd, SPEED_10); - if (tmp == LPA_100FULL || tmp == LPA_10FULL) - ecmd->duplex = DUPLEX_FULL; - else - ecmd->duplex = DUPLEX_HALF; - } - - /* ignore maxtxpkt, maxrxpkt for now */ - - return 0; -} - -static int netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd) -{ - struct netdev_private *np = netdev_priv(dev); - - if (ecmd->port != PORT_TP && ecmd->port != PORT_MII && ecmd->port != PORT_FIBRE) - return -EINVAL; - if (ecmd->transceiver != XCVR_INTERNAL && ecmd->transceiver != XCVR_EXTERNAL) - return -EINVAL; - if (ecmd->autoneg == AUTONEG_ENABLE) { - if ((ecmd->advertising & (ADVERTISED_10baseT_Half | - ADVERTISED_10baseT_Full | - ADVERTISED_100baseT_Half | - ADVERTISED_100baseT_Full)) == 0) { - return -EINVAL; - } - } else if (ecmd->autoneg == AUTONEG_DISABLE) { - u32 speed = ethtool_cmd_speed(ecmd); - if (speed != SPEED_10 && speed != SPEED_100) - return -EINVAL; - if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL) - return -EINVAL; - } else { - return -EINVAL; - } - - /* - * If we're ignoring the PHY then autoneg and the internal - * transceiver are really not going to work so don't let the - * user select them. - */ - if (np->ignore_phy && (ecmd->autoneg == AUTONEG_ENABLE || - ecmd->port == PORT_TP)) - return -EINVAL; - - /* - * maxtxpkt, maxrxpkt: ignored for now. - * - * transceiver: - * PORT_TP is always XCVR_INTERNAL, PORT_MII and PORT_FIBRE are always - * XCVR_EXTERNAL. The implementation thus ignores ecmd->transceiver and - * selects based on ecmd->port. - * - * Actually PORT_FIBRE is nearly identical to PORT_MII: it's for fibre - * phys that are connected to the mii bus. It's used to apply fibre - * specific updates. - */ - - /* WHEW! now lets bang some bits */ - - /* save the parms */ - dev->if_port = ecmd->port; - np->autoneg = ecmd->autoneg; - np->phy_addr_external = ecmd->phy_address & PhyAddrMask; - if (np->autoneg == AUTONEG_ENABLE) { - /* advertise only what has been requested */ - np->advertising &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4); - if (ecmd->advertising & ADVERTISED_10baseT_Half) - np->advertising |= ADVERTISE_10HALF; - if (ecmd->advertising & ADVERTISED_10baseT_Full) - np->advertising |= ADVERTISE_10FULL; - if (ecmd->advertising & ADVERTISED_100baseT_Half) - np->advertising |= ADVERTISE_100HALF; - if (ecmd->advertising & ADVERTISED_100baseT_Full) - np->advertising |= ADVERTISE_100FULL; - } else { - np->speed = ethtool_cmd_speed(ecmd); - np->duplex = ecmd->duplex; - /* user overriding the initial full duplex parm? */ - if (np->duplex == DUPLEX_HALF) - np->full_duplex = 0; - } - - /* get the right phy enabled */ - if (ecmd->port == PORT_TP) - switch_port_internal(dev); - else - switch_port_external(dev); - - /* set parms and see how this affected our link status */ - init_phy_fixup(dev); - check_link(dev); - return 0; -} - -static int netdev_get_regs(struct net_device *dev, u8 *buf) -{ - int i; - int j; - u32 rfcr; - u32 *rbuf = (u32 *)buf; - void __iomem * ioaddr = ns_ioaddr(dev); - - /* read non-mii page 0 of registers */ - for (i = 0; i < NATSEMI_PG0_NREGS/2; i++) { - rbuf[i] = readl(ioaddr + i*4); - } - - /* read current mii registers */ - for (i = NATSEMI_PG0_NREGS/2; i < NATSEMI_PG0_NREGS; i++) - rbuf[i] = mdio_read(dev, i & 0x1f); - - /* read only the 'magic' registers from page 1 */ - writew(1, ioaddr + PGSEL); - rbuf[i++] = readw(ioaddr + PMDCSR); - rbuf[i++] = readw(ioaddr + TSTDAT); - rbuf[i++] = readw(ioaddr + DSPCFG); - rbuf[i++] = readw(ioaddr + SDCFG); - writew(0, ioaddr + PGSEL); - - /* read RFCR indexed registers */ - rfcr = readl(ioaddr + RxFilterAddr); - for (j = 0; j < NATSEMI_RFDR_NREGS; j++) { - writel(j*2, ioaddr + RxFilterAddr); - rbuf[i++] = readw(ioaddr + RxFilterData); - } - writel(rfcr, ioaddr + RxFilterAddr); - - /* the interrupt status is clear-on-read - see if we missed any */ - if (rbuf[4] & rbuf[5]) { - printk(KERN_WARNING - "%s: shoot, we dropped an interrupt (%#08x)\n", - dev->name, rbuf[4] & rbuf[5]); - } - - return 0; -} - -#define SWAP_BITS(x) ( (((x) & 0x0001) << 15) | (((x) & 0x0002) << 13) \ - | (((x) & 0x0004) << 11) | (((x) & 0x0008) << 9) \ - | (((x) & 0x0010) << 7) | (((x) & 0x0020) << 5) \ - | (((x) & 0x0040) << 3) | (((x) & 0x0080) << 1) \ - | (((x) & 0x0100) >> 1) | (((x) & 0x0200) >> 3) \ - | (((x) & 0x0400) >> 5) | (((x) & 0x0800) >> 7) \ - | (((x) & 0x1000) >> 9) | (((x) & 0x2000) >> 11) \ - | (((x) & 0x4000) >> 13) | (((x) & 0x8000) >> 15) ) - -static int netdev_get_eeprom(struct net_device *dev, u8 *buf) -{ - int i; - u16 *ebuf = (u16 *)buf; - void __iomem * ioaddr = ns_ioaddr(dev); - struct netdev_private *np = netdev_priv(dev); - - /* eeprom_read reads 16 bits, and indexes by 16 bits */ - for (i = 0; i < np->eeprom_size/2; i++) { - ebuf[i] = eeprom_read(ioaddr, i); - /* The EEPROM itself stores data bit-swapped, but eeprom_read - * reads it back "sanely". So we swap it back here in order to - * present it to userland as it is stored. */ - ebuf[i] = SWAP_BITS(ebuf[i]); - } - return 0; -} - -static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) -{ - struct mii_ioctl_data *data = if_mii(rq); - struct netdev_private *np = netdev_priv(dev); - - switch(cmd) { - case SIOCGMIIPHY: /* Get address of MII PHY in use. */ - data->phy_id = np->phy_addr_external; - /* Fall Through */ - - case SIOCGMIIREG: /* Read MII PHY register. */ - /* The phy_id is not enough to uniquely identify - * the intended target. Therefore the command is sent to - * the given mii on the current port. - */ - if (dev->if_port == PORT_TP) { - if ((data->phy_id & 0x1f) == np->phy_addr_external) - data->val_out = mdio_read(dev, - data->reg_num & 0x1f); - else - data->val_out = 0; - } else { - move_int_phy(dev, data->phy_id & 0x1f); - data->val_out = miiport_read(dev, data->phy_id & 0x1f, - data->reg_num & 0x1f); - } - return 0; - - case SIOCSMIIREG: /* Write MII PHY register. */ - if (dev->if_port == PORT_TP) { - if ((data->phy_id & 0x1f) == np->phy_addr_external) { - if ((data->reg_num & 0x1f) == MII_ADVERTISE) - np->advertising = data->val_in; - mdio_write(dev, data->reg_num & 0x1f, - data->val_in); - } - } else { - if ((data->phy_id & 0x1f) == np->phy_addr_external) { - if ((data->reg_num & 0x1f) == MII_ADVERTISE) - np->advertising = data->val_in; - } - move_int_phy(dev, data->phy_id & 0x1f); - miiport_write(dev, data->phy_id & 0x1f, - data->reg_num & 0x1f, - data->val_in); - } - return 0; - default: - return -EOPNOTSUPP; - } -} - -static void enable_wol_mode(struct net_device *dev, int enable_intr) -{ - void __iomem * ioaddr = ns_ioaddr(dev); - struct netdev_private *np = netdev_priv(dev); - - if (netif_msg_wol(np)) - printk(KERN_INFO "%s: remaining active for wake-on-lan\n", - dev->name); - - /* For WOL we must restart the rx process in silent mode. - * Write NULL to the RxRingPtr. Only possible if - * rx process is stopped - */ - writel(0, ioaddr + RxRingPtr); - - /* read WoL status to clear */ - readl(ioaddr + WOLCmd); - - /* PME on, clear status */ - writel(np->SavedClkRun | PMEEnable | PMEStatus, ioaddr + ClkRun); - - /* and restart the rx process */ - writel(RxOn, ioaddr + ChipCmd); - - if (enable_intr) { - /* enable the WOL interrupt. - * Could be used to send a netlink message. - */ - writel(WOLPkt | LinkChange, ioaddr + IntrMask); - natsemi_irq_enable(dev); - } -} - -static int netdev_close(struct net_device *dev) -{ - void __iomem * ioaddr = ns_ioaddr(dev); - struct netdev_private *np = netdev_priv(dev); - - if (netif_msg_ifdown(np)) - printk(KERN_DEBUG - "%s: Shutting down ethercard, status was %#04x.\n", - dev->name, (int)readl(ioaddr + ChipCmd)); - if (netif_msg_pktdata(np)) - printk(KERN_DEBUG - "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", - dev->name, np->cur_tx, np->dirty_tx, - np->cur_rx, np->dirty_rx); - - napi_disable(&np->napi); - - /* - * FIXME: what if someone tries to close a device - * that is suspended? - * Should we reenable the nic to switch to - * the final WOL settings? - */ - - del_timer_sync(&np->timer); - disable_irq(dev->irq); - spin_lock_irq(&np->lock); - natsemi_irq_disable(dev); - np->hands_off = 1; - spin_unlock_irq(&np->lock); - enable_irq(dev->irq); - - free_irq(dev->irq, dev); - - /* Interrupt disabled, interrupt handler released, - * queue stopped, timer deleted, rtnl_lock held - * All async codepaths that access the driver are disabled. - */ - spin_lock_irq(&np->lock); - np->hands_off = 0; - readl(ioaddr + IntrMask); - readw(ioaddr + MIntrStatus); - - /* Freeze Stats */ - writel(StatsFreeze, ioaddr + StatsCtrl); - - /* Stop the chip's Tx and Rx processes. */ - natsemi_stop_rxtx(dev); - - __get_stats(dev); - spin_unlock_irq(&np->lock); - - /* clear the carrier last - an interrupt could reenable it otherwise */ - netif_carrier_off(dev); - netif_stop_queue(dev); - - dump_ring(dev); - drain_ring(dev); - free_ring(dev); - - { - u32 wol = readl(ioaddr + WOLCmd) & WakeOptsSummary; - if (wol) { - /* restart the NIC in WOL mode. - * The nic must be stopped for this. - */ - enable_wol_mode(dev, 0); - } else { - /* Restore PME enable bit unmolested */ - writel(np->SavedClkRun, ioaddr + ClkRun); - } - } - return 0; -} - - -static void __devexit natsemi_remove1 (struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - void __iomem * ioaddr = ns_ioaddr(dev); - - NATSEMI_REMOVE_FILE(pdev, dspcfg_workaround); - unregister_netdev (dev); - pci_release_regions (pdev); - iounmap(ioaddr); - free_netdev (dev); - pci_set_drvdata(pdev, NULL); -} - -#ifdef CONFIG_PM - -/* - * The ns83815 chip doesn't have explicit RxStop bits. - * Kicking the Rx or Tx process for a new packet reenables the Rx process - * of the nic, thus this function must be very careful: - * - * suspend/resume synchronization: - * entry points: - * netdev_open, netdev_close, netdev_ioctl, set_rx_mode, intr_handler, - * start_tx, ns_tx_timeout - * - * No function accesses the hardware without checking np->hands_off. - * the check occurs under spin_lock_irq(&np->lock); - * exceptions: - * * netdev_ioctl: noncritical access. - * * netdev_open: cannot happen due to the device_detach - * * netdev_close: doesn't hurt. - * * netdev_timer: timer stopped by natsemi_suspend. - * * intr_handler: doesn't acquire the spinlock. suspend calls - * disable_irq() to enforce synchronization. - * * natsemi_poll: checks before reenabling interrupts. suspend - * sets hands_off, disables interrupts and then waits with - * napi_disable(). - * - * Interrupts must be disabled, otherwise hands_off can cause irq storms. - */ - -static int natsemi_suspend (struct pci_dev *pdev, pm_message_t state) -{ - struct net_device *dev = pci_get_drvdata (pdev); - struct netdev_private *np = netdev_priv(dev); - void __iomem * ioaddr = ns_ioaddr(dev); - - rtnl_lock(); - if (netif_running (dev)) { - del_timer_sync(&np->timer); - - disable_irq(dev->irq); - spin_lock_irq(&np->lock); - - natsemi_irq_disable(dev); - np->hands_off = 1; - natsemi_stop_rxtx(dev); - netif_stop_queue(dev); - - spin_unlock_irq(&np->lock); - enable_irq(dev->irq); - - napi_disable(&np->napi); - - /* Update the error counts. */ - __get_stats(dev); - - /* pci_power_off(pdev, -1); */ - drain_ring(dev); - { - u32 wol = readl(ioaddr + WOLCmd) & WakeOptsSummary; - /* Restore PME enable bit */ - if (wol) { - /* restart the NIC in WOL mode. - * The nic must be stopped for this. - * FIXME: use the WOL interrupt - */ - enable_wol_mode(dev, 0); - } else { - /* Restore PME enable bit unmolested */ - writel(np->SavedClkRun, ioaddr + ClkRun); - } - } - } - netif_device_detach(dev); - rtnl_unlock(); - return 0; -} - - -static int natsemi_resume (struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata (pdev); - struct netdev_private *np = netdev_priv(dev); - int ret = 0; - - rtnl_lock(); - if (netif_device_present(dev)) - goto out; - if (netif_running(dev)) { - BUG_ON(!np->hands_off); - ret = pci_enable_device(pdev); - if (ret < 0) { - dev_err(&pdev->dev, - "pci_enable_device() failed: %d\n", ret); - goto out; - } - /* pci_power_on(pdev); */ - - napi_enable(&np->napi); - - natsemi_reset(dev); - init_ring(dev); - disable_irq(dev->irq); - spin_lock_irq(&np->lock); - np->hands_off = 0; - init_registers(dev); - netif_device_attach(dev); - spin_unlock_irq(&np->lock); - enable_irq(dev->irq); - - mod_timer(&np->timer, round_jiffies(jiffies + 1*HZ)); - } - netif_device_attach(dev); -out: - rtnl_unlock(); - return ret; -} - -#endif /* CONFIG_PM */ - -static struct pci_driver natsemi_driver = { - .name = DRV_NAME, - .id_table = natsemi_pci_tbl, - .probe = natsemi_probe1, - .remove = __devexit_p(natsemi_remove1), -#ifdef CONFIG_PM - .suspend = natsemi_suspend, - .resume = natsemi_resume, -#endif -}; - -static int __init natsemi_init_mod (void) -{ -/* when a module, this is printed whether or not devices are found in probe */ -#ifdef MODULE - printk(version); -#endif - - return pci_register_driver(&natsemi_driver); -} - -static void __exit natsemi_exit_mod (void) -{ - pci_unregister_driver (&natsemi_driver); -} - -module_init(natsemi_init_mod); -module_exit(natsemi_exit_mod); - |
