diff options
author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-05-13 22:20:35 -0700 |
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committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-11 02:42:06 -0700 |
commit | a6a5580c4d90788d67a77c689d3ab22aa5eecfc3 (patch) | |
tree | 89080daf4b0b4939daadb807f19eca3e977d42cb /drivers/net/enic/vnic_dev.c | |
parent | 9aa3283595451ca093500ff0977b106e1f465586 (diff) | |
download | talos-op-linux-a6a5580c4d90788d67a77c689d3ab22aa5eecfc3.tar.gz talos-op-linux-a6a5580c4d90788d67a77c689d3ab22aa5eecfc3.zip |
enic: Move the Cisco driver
Move the Cisco driver into drivers/net/ethernet/cisco/ and make the
necessary Kconfig and Makefile changes.
CC: Christian Benvenuti <benve@cisco.com>
CC: Vasanthy Kolluri <vkolluri@cisco.com>
CC: Roopa Prabhu <roprabhu@cisco.com>
CC: David Wang <dwang2@cisco.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/enic/vnic_dev.c')
-rw-r--r-- | drivers/net/enic/vnic_dev.c | 1003 |
1 files changed, 0 insertions, 1003 deletions
diff --git a/drivers/net/enic/vnic_dev.c b/drivers/net/enic/vnic_dev.c deleted file mode 100644 index 8c4c8cf486f6..000000000000 --- a/drivers/net/enic/vnic_dev.c +++ /dev/null @@ -1,1003 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <linux/if_ether.h> - -#include "vnic_resource.h" -#include "vnic_devcmd.h" -#include "vnic_dev.h" -#include "vnic_stats.h" - -enum vnic_proxy_type { - PROXY_NONE, - PROXY_BY_BDF, -}; - -struct vnic_res { - void __iomem *vaddr; - dma_addr_t bus_addr; - unsigned int count; -}; - -struct vnic_intr_coal_timer_info { - u32 mul; - u32 div; - u32 max_usec; -}; - -struct vnic_dev { - void *priv; - struct pci_dev *pdev; - struct vnic_res res[RES_TYPE_MAX]; - enum vnic_dev_intr_mode intr_mode; - struct vnic_devcmd __iomem *devcmd; - struct vnic_devcmd_notify *notify; - struct vnic_devcmd_notify notify_copy; - dma_addr_t notify_pa; - u32 notify_sz; - dma_addr_t linkstatus_pa; - struct vnic_stats *stats; - dma_addr_t stats_pa; - struct vnic_devcmd_fw_info *fw_info; - dma_addr_t fw_info_pa; - enum vnic_proxy_type proxy; - u32 proxy_index; - u64 args[VNIC_DEVCMD_NARGS]; - struct vnic_intr_coal_timer_info intr_coal_timer_info; -}; - -#define VNIC_MAX_RES_HDR_SIZE \ - (sizeof(struct vnic_resource_header) + \ - sizeof(struct vnic_resource) * RES_TYPE_MAX) -#define VNIC_RES_STRIDE 128 - -void *vnic_dev_priv(struct vnic_dev *vdev) -{ - return vdev->priv; -} - -static int vnic_dev_discover_res(struct vnic_dev *vdev, - struct vnic_dev_bar *bar, unsigned int num_bars) -{ - struct vnic_resource_header __iomem *rh; - struct mgmt_barmap_hdr __iomem *mrh; - struct vnic_resource __iomem *r; - u8 type; - - if (num_bars == 0) - return -EINVAL; - - if (bar->len < VNIC_MAX_RES_HDR_SIZE) { - pr_err("vNIC BAR0 res hdr length error\n"); - return -EINVAL; - } - - rh = bar->vaddr; - mrh = bar->vaddr; - if (!rh) { - pr_err("vNIC BAR0 res hdr not mem-mapped\n"); - return -EINVAL; - } - - /* Check for mgmt vnic in addition to normal vnic */ - if ((ioread32(&rh->magic) != VNIC_RES_MAGIC) || - (ioread32(&rh->version) != VNIC_RES_VERSION)) { - if ((ioread32(&mrh->magic) != MGMTVNIC_MAGIC) || - (ioread32(&mrh->version) != MGMTVNIC_VERSION)) { - pr_err("vNIC BAR0 res magic/version error " - "exp (%lx/%lx) or (%lx/%lx), curr (%x/%x)\n", - VNIC_RES_MAGIC, VNIC_RES_VERSION, - MGMTVNIC_MAGIC, MGMTVNIC_VERSION, - ioread32(&rh->magic), ioread32(&rh->version)); - return -EINVAL; - } - } - - if (ioread32(&mrh->magic) == MGMTVNIC_MAGIC) - r = (struct vnic_resource __iomem *)(mrh + 1); - else - r = (struct vnic_resource __iomem *)(rh + 1); - - - while ((type = ioread8(&r->type)) != RES_TYPE_EOL) { - - u8 bar_num = ioread8(&r->bar); - u32 bar_offset = ioread32(&r->bar_offset); - u32 count = ioread32(&r->count); - u32 len; - - r++; - - if (bar_num >= num_bars) - continue; - - if (!bar[bar_num].len || !bar[bar_num].vaddr) - continue; - - switch (type) { - case RES_TYPE_WQ: - case RES_TYPE_RQ: - case RES_TYPE_CQ: - case RES_TYPE_INTR_CTRL: - /* each count is stride bytes long */ - len = count * VNIC_RES_STRIDE; - if (len + bar_offset > bar[bar_num].len) { - pr_err("vNIC BAR0 resource %d " - "out-of-bounds, offset 0x%x + " - "size 0x%x > bar len 0x%lx\n", - type, bar_offset, - len, - bar[bar_num].len); - return -EINVAL; - } - break; - case RES_TYPE_INTR_PBA_LEGACY: - case RES_TYPE_DEVCMD: - len = count; - break; - default: - continue; - } - - vdev->res[type].count = count; - vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr + - bar_offset; - vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset; - } - - return 0; -} - -unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, - enum vnic_res_type type) -{ - return vdev->res[type].count; -} - -void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, - unsigned int index) -{ - if (!vdev->res[type].vaddr) - return NULL; - - switch (type) { - case RES_TYPE_WQ: - case RES_TYPE_RQ: - case RES_TYPE_CQ: - case RES_TYPE_INTR_CTRL: - return (char __iomem *)vdev->res[type].vaddr + - index * VNIC_RES_STRIDE; - default: - return (char __iomem *)vdev->res[type].vaddr; - } -} - -static unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring, - unsigned int desc_count, unsigned int desc_size) -{ - /* The base address of the desc rings must be 512 byte aligned. - * Descriptor count is aligned to groups of 32 descriptors. A - * count of 0 means the maximum 4096 descriptors. Descriptor - * size is aligned to 16 bytes. - */ - - unsigned int count_align = 32; - unsigned int desc_align = 16; - - ring->base_align = 512; - - if (desc_count == 0) - desc_count = 4096; - - ring->desc_count = ALIGN(desc_count, count_align); - - ring->desc_size = ALIGN(desc_size, desc_align); - - ring->size = ring->desc_count * ring->desc_size; - ring->size_unaligned = ring->size + ring->base_align; - - return ring->size_unaligned; -} - -void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring) -{ - memset(ring->descs, 0, ring->size); -} - -int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, - unsigned int desc_count, unsigned int desc_size) -{ - vnic_dev_desc_ring_size(ring, desc_count, desc_size); - - ring->descs_unaligned = pci_alloc_consistent(vdev->pdev, - ring->size_unaligned, - &ring->base_addr_unaligned); - - if (!ring->descs_unaligned) { - pr_err("Failed to allocate ring (size=%d), aborting\n", - (int)ring->size); - return -ENOMEM; - } - - ring->base_addr = ALIGN(ring->base_addr_unaligned, - ring->base_align); - ring->descs = (u8 *)ring->descs_unaligned + - (ring->base_addr - ring->base_addr_unaligned); - - vnic_dev_clear_desc_ring(ring); - - ring->desc_avail = ring->desc_count - 1; - - return 0; -} - -void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring) -{ - if (ring->descs) { - pci_free_consistent(vdev->pdev, - ring->size_unaligned, - ring->descs_unaligned, - ring->base_addr_unaligned); - ring->descs = NULL; - } -} - -static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, - int wait) -{ - struct vnic_devcmd __iomem *devcmd = vdev->devcmd; - unsigned int i; - int delay; - u32 status; - int err; - - status = ioread32(&devcmd->status); - if (status == 0xFFFFFFFF) { - /* PCI-e target device is gone */ - return -ENODEV; - } - if (status & STAT_BUSY) { - pr_err("Busy devcmd %d\n", _CMD_N(cmd)); - return -EBUSY; - } - - if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { - for (i = 0; i < VNIC_DEVCMD_NARGS; i++) - writeq(vdev->args[i], &devcmd->args[i]); - wmb(); - } - - iowrite32(cmd, &devcmd->cmd); - - if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) - return 0; - - for (delay = 0; delay < wait; delay++) { - - udelay(100); - - status = ioread32(&devcmd->status); - if (status == 0xFFFFFFFF) { - /* PCI-e target device is gone */ - return -ENODEV; - } - - if (!(status & STAT_BUSY)) { - - if (status & STAT_ERROR) { - err = (int)readq(&devcmd->args[0]); - if (err != ERR_ECMDUNKNOWN || - cmd != CMD_CAPABILITY) - pr_err("Error %d devcmd %d\n", - err, _CMD_N(cmd)); - return err; - } - - if (_CMD_DIR(cmd) & _CMD_DIR_READ) { - rmb(); - for (i = 0; i < VNIC_DEVCMD_NARGS; i++) - vdev->args[i] = readq(&devcmd->args[i]); - } - - return 0; - } - } - - pr_err("Timedout devcmd %d\n", _CMD_N(cmd)); - return -ETIMEDOUT; -} - -static int vnic_dev_cmd_proxy_by_bdf(struct vnic_dev *vdev, - enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) -{ - u32 status; - int err; - - memset(vdev->args, 0, sizeof(vdev->args)); - - vdev->args[0] = vdev->proxy_index; /* bdf */ - vdev->args[1] = cmd; - vdev->args[2] = *a0; - vdev->args[3] = *a1; - - err = _vnic_dev_cmd(vdev, CMD_PROXY_BY_BDF, wait); - if (err) - return err; - - status = (u32)vdev->args[0]; - if (status & STAT_ERROR) { - err = (int)vdev->args[1]; - if (err != ERR_ECMDUNKNOWN || - cmd != CMD_CAPABILITY) - pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd)); - return err; - } - - *a0 = vdev->args[1]; - *a1 = vdev->args[2]; - - return 0; -} - -static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev, - enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) -{ - int err; - - vdev->args[0] = *a0; - vdev->args[1] = *a1; - - err = _vnic_dev_cmd(vdev, cmd, wait); - - *a0 = vdev->args[0]; - *a1 = vdev->args[1]; - - return err; -} - -int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, - u64 *a0, u64 *a1, int wait) -{ - memset(vdev->args, 0, sizeof(vdev->args)); - - switch (vdev->proxy) { - case PROXY_BY_BDF: - return vnic_dev_cmd_proxy_by_bdf(vdev, cmd, a0, a1, wait); - case PROXY_NONE: - default: - return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait); - } -} - -static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd) -{ - u64 a0 = (u32)cmd, a1 = 0; - int wait = 1000; - int err; - - err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait); - - return !(err || a0); -} - -int vnic_dev_fw_info(struct vnic_dev *vdev, - struct vnic_devcmd_fw_info **fw_info) -{ - u64 a0, a1 = 0; - int wait = 1000; - int err = 0; - - if (!vdev->fw_info) { - vdev->fw_info = pci_alloc_consistent(vdev->pdev, - sizeof(struct vnic_devcmd_fw_info), - &vdev->fw_info_pa); - if (!vdev->fw_info) - return -ENOMEM; - - memset(vdev->fw_info, 0, sizeof(struct vnic_devcmd_fw_info)); - - a0 = vdev->fw_info_pa; - a1 = sizeof(struct vnic_devcmd_fw_info); - - /* only get fw_info once and cache it */ - err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait); - if (err == ERR_ECMDUNKNOWN) { - err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO_OLD, - &a0, &a1, wait); - } - } - - *fw_info = vdev->fw_info; - - return err; -} - -int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, - void *value) -{ - u64 a0, a1; - int wait = 1000; - int err; - - a0 = offset; - a1 = size; - - err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait); - - switch (size) { - case 1: *(u8 *)value = (u8)a0; break; - case 2: *(u16 *)value = (u16)a0; break; - case 4: *(u32 *)value = (u32)a0; break; - case 8: *(u64 *)value = a0; break; - default: BUG(); break; - } - - return err; -} - -int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats) -{ - u64 a0, a1; - int wait = 1000; - - if (!vdev->stats) { - vdev->stats = pci_alloc_consistent(vdev->pdev, - sizeof(struct vnic_stats), &vdev->stats_pa); - if (!vdev->stats) - return -ENOMEM; - } - - *stats = vdev->stats; - a0 = vdev->stats_pa; - a1 = sizeof(struct vnic_stats); - - return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait); -} - -int vnic_dev_close(struct vnic_dev *vdev) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait); -} - -int vnic_dev_enable_wait(struct vnic_dev *vdev) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - - err = vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait); - if (err == ERR_ECMDUNKNOWN) - return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait); - - return err; -} - -int vnic_dev_disable(struct vnic_dev *vdev) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait); -} - -int vnic_dev_open(struct vnic_dev *vdev, int arg) -{ - u64 a0 = (u32)arg, a1 = 0; - int wait = 1000; - return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait); -} - -int vnic_dev_open_done(struct vnic_dev *vdev, int *done) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - - *done = 0; - - err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait); - if (err) - return err; - - *done = (a0 == 0); - - return 0; -} - -static int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg) -{ - u64 a0 = (u32)arg, a1 = 0; - int wait = 1000; - return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait); -} - -static int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - - *done = 0; - - err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait); - if (err) - return err; - - *done = (a0 == 0); - - return 0; -} - -int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg) -{ - u64 a0 = (u32)arg, a1 = 0; - int wait = 1000; - int err; - - err = vnic_dev_cmd(vdev, CMD_HANG_RESET, &a0, &a1, wait); - if (err == ERR_ECMDUNKNOWN) { - err = vnic_dev_soft_reset(vdev, arg); - if (err) - return err; - - return vnic_dev_init(vdev, 0); - } - - return err; -} - -int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - - *done = 0; - - err = vnic_dev_cmd(vdev, CMD_HANG_RESET_STATUS, &a0, &a1, wait); - if (err) { - if (err == ERR_ECMDUNKNOWN) - return vnic_dev_soft_reset_done(vdev, done); - return err; - } - - *done = (a0 == 0); - - return 0; -} - -int vnic_dev_hang_notify(struct vnic_dev *vdev) -{ - u64 a0, a1; - int wait = 1000; - return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait); -} - -int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr) -{ - u64 a0, a1; - int wait = 1000; - int err, i; - - for (i = 0; i < ETH_ALEN; i++) - mac_addr[i] = 0; - - err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); - if (err) - return err; - - for (i = 0; i < ETH_ALEN; i++) - mac_addr[i] = ((u8 *)&a0)[i]; - - return 0; -} - -int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, - int broadcast, int promisc, int allmulti) -{ - u64 a0, a1 = 0; - int wait = 1000; - int err; - - a0 = (directed ? CMD_PFILTER_DIRECTED : 0) | - (multicast ? CMD_PFILTER_MULTICAST : 0) | - (broadcast ? CMD_PFILTER_BROADCAST : 0) | - (promisc ? CMD_PFILTER_PROMISCUOUS : 0) | - (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0); - - err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait); - if (err) - pr_err("Can't set packet filter\n"); - - return err; -} - -int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - int i; - - for (i = 0; i < ETH_ALEN; i++) - ((u8 *)&a0)[i] = addr[i]; - - err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); - if (err) - pr_err("Can't add addr [%pM], %d\n", addr, err); - - return err; -} - -int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - int i; - - for (i = 0; i < ETH_ALEN; i++) - ((u8 *)&a0)[i] = addr[i]; - - err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait); - if (err) - pr_err("Can't del addr [%pM], %d\n", addr, err); - - return err; -} - -int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev, - u8 ig_vlan_rewrite_mode) -{ - u64 a0 = ig_vlan_rewrite_mode, a1 = 0; - int wait = 1000; - int err; - - err = vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE, &a0, &a1, wait); - if (err == ERR_ECMDUNKNOWN) - return 0; - - return err; -} - -static int vnic_dev_notify_setcmd(struct vnic_dev *vdev, - void *notify_addr, dma_addr_t notify_pa, u16 intr) -{ - u64 a0, a1; - int wait = 1000; - int r; - - memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify)); - vdev->notify = notify_addr; - vdev->notify_pa = notify_pa; - - a0 = (u64)notify_pa; - a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL; - a1 += sizeof(struct vnic_devcmd_notify); - - r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); - vdev->notify_sz = (r == 0) ? (u32)a1 : 0; - return r; -} - -int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr) -{ - void *notify_addr; - dma_addr_t notify_pa; - - if (vdev->notify || vdev->notify_pa) { - pr_err("notify block %p still allocated", vdev->notify); - return -EINVAL; - } - - notify_addr = pci_alloc_consistent(vdev->pdev, - sizeof(struct vnic_devcmd_notify), - ¬ify_pa); - if (!notify_addr) - return -ENOMEM; - - return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr); -} - -static int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev) -{ - u64 a0, a1; - int wait = 1000; - int err; - - a0 = 0; /* paddr = 0 to unset notify buffer */ - a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */ - a1 += sizeof(struct vnic_devcmd_notify); - - err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); - vdev->notify = NULL; - vdev->notify_pa = 0; - vdev->notify_sz = 0; - - return err; -} - -int vnic_dev_notify_unset(struct vnic_dev *vdev) -{ - if (vdev->notify) { - pci_free_consistent(vdev->pdev, - sizeof(struct vnic_devcmd_notify), - vdev->notify, - vdev->notify_pa); - } - - return vnic_dev_notify_unsetcmd(vdev); -} - -static int vnic_dev_notify_ready(struct vnic_dev *vdev) -{ - u32 *words; - unsigned int nwords = vdev->notify_sz / 4; - unsigned int i; - u32 csum; - - if (!vdev->notify || !vdev->notify_sz) - return 0; - - do { - csum = 0; - memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz); - words = (u32 *)&vdev->notify_copy; - for (i = 1; i < nwords; i++) - csum += words[i]; - } while (csum != words[0]); - - return 1; -} - -int vnic_dev_init(struct vnic_dev *vdev, int arg) -{ - u64 a0 = (u32)arg, a1 = 0; - int wait = 1000; - int r = 0; - - if (vnic_dev_capable(vdev, CMD_INIT)) - r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait); - else { - vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait); - if (a0 & CMD_INITF_DEFAULT_MAC) { - /* Emulate these for old CMD_INIT_v1 which - * didn't pass a0 so no CMD_INITF_*. - */ - vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); - vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); - } - } - return r; -} - -int vnic_dev_deinit(struct vnic_dev *vdev) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - - return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait); -} - -void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev) -{ - /* Default: hardware intr coal timer is in units of 1.5 usecs */ - vdev->intr_coal_timer_info.mul = 2; - vdev->intr_coal_timer_info.div = 3; - vdev->intr_coal_timer_info.max_usec = - vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff); -} - -int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev) -{ - int wait = 1000; - int err; - - memset(vdev->args, 0, sizeof(vdev->args)); - - err = _vnic_dev_cmd(vdev, CMD_INTR_COAL_CONVERT, wait); - - /* Use defaults when firmware doesn't support the devcmd at all or - * supports it for only specific hardware - */ - if ((err == ERR_ECMDUNKNOWN) || - (!err && !(vdev->args[0] && vdev->args[1] && vdev->args[2]))) { - pr_warning("Using default conversion factor for " - "interrupt coalesce timer\n"); - vnic_dev_intr_coal_timer_info_default(vdev); - return 0; - } - - vdev->intr_coal_timer_info.mul = (u32) vdev->args[0]; - vdev->intr_coal_timer_info.div = (u32) vdev->args[1]; - vdev->intr_coal_timer_info.max_usec = (u32) vdev->args[2]; - - return err; -} - -int vnic_dev_link_status(struct vnic_dev *vdev) -{ - if (!vnic_dev_notify_ready(vdev)) - return 0; - - return vdev->notify_copy.link_state; -} - -u32 vnic_dev_port_speed(struct vnic_dev *vdev) -{ - if (!vnic_dev_notify_ready(vdev)) - return 0; - - return vdev->notify_copy.port_speed; -} - -u32 vnic_dev_msg_lvl(struct vnic_dev *vdev) -{ - if (!vnic_dev_notify_ready(vdev)) - return 0; - - return vdev->notify_copy.msglvl; -} - -u32 vnic_dev_mtu(struct vnic_dev *vdev) -{ - if (!vnic_dev_notify_ready(vdev)) - return 0; - - return vdev->notify_copy.mtu; -} - -void vnic_dev_set_intr_mode(struct vnic_dev *vdev, - enum vnic_dev_intr_mode intr_mode) -{ - vdev->intr_mode = intr_mode; -} - -enum vnic_dev_intr_mode vnic_dev_get_intr_mode( - struct vnic_dev *vdev) -{ - return vdev->intr_mode; -} - -u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec) -{ - return (usec * vdev->intr_coal_timer_info.mul) / - vdev->intr_coal_timer_info.div; -} - -u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles) -{ - return (hw_cycles * vdev->intr_coal_timer_info.div) / - vdev->intr_coal_timer_info.mul; -} - -u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev) -{ - return vdev->intr_coal_timer_info.max_usec; -} - -void vnic_dev_unregister(struct vnic_dev *vdev) -{ - if (vdev) { - if (vdev->notify) - pci_free_consistent(vdev->pdev, - sizeof(struct vnic_devcmd_notify), - vdev->notify, - vdev->notify_pa); - if (vdev->stats) - pci_free_consistent(vdev->pdev, - sizeof(struct vnic_stats), - vdev->stats, vdev->stats_pa); - if (vdev->fw_info) - pci_free_consistent(vdev->pdev, - sizeof(struct vnic_devcmd_fw_info), - vdev->fw_info, vdev->fw_info_pa); - kfree(vdev); - } -} - -struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, - void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar, - unsigned int num_bars) -{ - if (!vdev) { - vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC); - if (!vdev) - return NULL; - } - - vdev->priv = priv; - vdev->pdev = pdev; - - if (vnic_dev_discover_res(vdev, bar, num_bars)) - goto err_out; - - vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0); - if (!vdev->devcmd) - goto err_out; - - return vdev; - -err_out: - vnic_dev_unregister(vdev); - return NULL; -} - -int vnic_dev_init_prov2(struct vnic_dev *vdev, u8 *buf, u32 len) -{ - u64 a0, a1 = len; - int wait = 1000; - dma_addr_t prov_pa; - void *prov_buf; - int ret; - - prov_buf = pci_alloc_consistent(vdev->pdev, len, &prov_pa); - if (!prov_buf) - return -ENOMEM; - - memcpy(prov_buf, buf, len); - - a0 = prov_pa; - - ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO2, &a0, &a1, wait); - - pci_free_consistent(vdev->pdev, len, prov_buf, prov_pa); - - return ret; -} - -int vnic_dev_enable2(struct vnic_dev *vdev, int active) -{ - u64 a0, a1 = 0; - int wait = 1000; - - a0 = (active ? CMD_ENABLE2_ACTIVE : 0); - - return vnic_dev_cmd(vdev, CMD_ENABLE2, &a0, &a1, wait); -} - -static int vnic_dev_cmd_status(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, - int *status) -{ - u64 a0 = cmd, a1 = 0; - int wait = 1000; - int ret; - - ret = vnic_dev_cmd(vdev, CMD_STATUS, &a0, &a1, wait); - if (!ret) - *status = (int)a0; - - return ret; -} - -int vnic_dev_enable2_done(struct vnic_dev *vdev, int *status) -{ - return vnic_dev_cmd_status(vdev, CMD_ENABLE2, status); -} - -int vnic_dev_deinit_done(struct vnic_dev *vdev, int *status) -{ - return vnic_dev_cmd_status(vdev, CMD_DEINIT, status); -} |