blob: ef8037d0b52e137d656fb9a748c0beef065f7ab4 [file] [log] [blame]
/*
* QLogic qlge NIC HBA Driver
* Copyright (c) 2003-2008 QLogic Corporation
* See LICENSE.qlge for copyright and licensing details.
* Author: Linux qlge network device driver by
* Ron Mercer <ron.mercer@qlogic.com>
*/
#include <linux/kernel.h>
#include <linux/bitops.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/list.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/pagemap.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/dmapool.h>
#include <linux/mempool.h>
#include <linux/spinlock.h>
#include <linux/kthread.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <net/ipv6.h>
#include <linux/tcp.h>
#include <linux/udp.h>
#include <linux/if_arp.h>
#include <linux/if_ether.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>
#include <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <linux/prefetch.h>
#include <net/ip6_checksum.h>
#include "qlge.h"
char qlge_driver_name[] = DRV_NAME;
const char qlge_driver_version[] = DRV_VERSION;
MODULE_AUTHOR("Ron Mercer <ron.mercer@qlogic.com>");
MODULE_DESCRIPTION(DRV_STRING " ");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
static const u32 default_msg =
NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK |
/* NETIF_MSG_TIMER | */
NETIF_MSG_IFDOWN |
NETIF_MSG_IFUP |
NETIF_MSG_RX_ERR |
NETIF_MSG_TX_ERR |
/* NETIF_MSG_TX_QUEUED | */
/* NETIF_MSG_INTR | NETIF_MSG_TX_DONE | NETIF_MSG_RX_STATUS | */
/* NETIF_MSG_PKTDATA | */
NETIF_MSG_HW | NETIF_MSG_WOL | 0;
static int debug = -1; /* defaults above */
module_param(debug, int, 0664);
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
#define MSIX_IRQ 0
#define MSI_IRQ 1
#define LEG_IRQ 2
static int qlge_irq_type = MSIX_IRQ;
module_param(qlge_irq_type, int, 0664);
MODULE_PARM_DESC(qlge_irq_type, "0 = MSI-X, 1 = MSI, 2 = Legacy.");
static int qlge_mpi_coredump;
module_param(qlge_mpi_coredump, int, 0);
MODULE_PARM_DESC(qlge_mpi_coredump,
"Option to enable MPI firmware dump. Default is OFF - Do Not allocate memory. ");
static int qlge_force_coredump;
module_param(qlge_force_coredump, int, 0);
MODULE_PARM_DESC(qlge_force_coredump,
"Option to allow force of firmware core dump. Default is OFF - Do not allow.");
static const struct pci_device_id qlge_pci_tbl[] = {
{PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QLGE_DEVICE_ID_8012)},
{PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QLGE_DEVICE_ID_8000)},
/* required last entry */
{0,}
};
MODULE_DEVICE_TABLE(pci, qlge_pci_tbl);
static int ql_wol(struct ql_adapter *);
static void qlge_set_multicast_list(struct net_device *);
static int ql_adapter_down(struct ql_adapter *);
static int ql_adapter_up(struct ql_adapter *);
/* This hardware semaphore causes exclusive access to
* resources shared between the NIC driver, MPI firmware,
* FCOE firmware and the FC driver.
*/
static int ql_sem_trylock(struct ql_adapter *qdev, u32 sem_mask)
{
u32 sem_bits = 0;
switch (sem_mask) {
case SEM_XGMAC0_MASK:
sem_bits = SEM_SET << SEM_XGMAC0_SHIFT;
break;
case SEM_XGMAC1_MASK:
sem_bits = SEM_SET << SEM_XGMAC1_SHIFT;
break;
case SEM_ICB_MASK:
sem_bits = SEM_SET << SEM_ICB_SHIFT;
break;
case SEM_MAC_ADDR_MASK:
sem_bits = SEM_SET << SEM_MAC_ADDR_SHIFT;
break;
case SEM_FLASH_MASK:
sem_bits = SEM_SET << SEM_FLASH_SHIFT;
break;
case SEM_PROBE_MASK:
sem_bits = SEM_SET << SEM_PROBE_SHIFT;
break;
case SEM_RT_IDX_MASK:
sem_bits = SEM_SET << SEM_RT_IDX_SHIFT;
break;
case SEM_PROC_REG_MASK:
sem_bits = SEM_SET << SEM_PROC_REG_SHIFT;
break;
default:
netif_alert(qdev, probe, qdev->ndev, "bad Semaphore mask!.\n");
return -EINVAL;
}
ql_write32(qdev, SEM, sem_bits | sem_mask);
return !(ql_read32(qdev, SEM) & sem_bits);
}
int ql_sem_spinlock(struct ql_adapter *qdev, u32 sem_mask)
{
unsigned int wait_count = 30;
do {
if (!ql_sem_trylock(qdev, sem_mask))
return 0;
udelay(100);
} while (--wait_count);
return -ETIMEDOUT;
}
void ql_sem_unlock(struct ql_adapter *qdev, u32 sem_mask)
{
ql_write32(qdev, SEM, sem_mask);
ql_read32(qdev, SEM); /* flush */
}
/* This function waits for a specific bit to come ready
* in a given register. It is used mostly by the initialize
* process, but is also used in kernel thread API such as
* netdev->set_multi, netdev->set_mac_address, netdev->vlan_rx_add_vid.
*/
int ql_wait_reg_rdy(struct ql_adapter *qdev, u32 reg, u32 bit, u32 err_bit)
{
u32 temp;
int count;
for (count = 0; count < UDELAY_COUNT; count++) {
temp = ql_read32(qdev, reg);
/* check for errors */
if (temp & err_bit) {
netif_alert(qdev, probe, qdev->ndev,
"register 0x%.08x access error, value = 0x%.08x!.\n",
reg, temp);
return -EIO;
} else if (temp & bit) {
return 0;
}
udelay(UDELAY_DELAY);
}
netif_alert(qdev, probe, qdev->ndev,
"Timed out waiting for reg %x to come ready.\n", reg);
return -ETIMEDOUT;
}
/* The CFG register is used to download TX and RX control blocks
* to the chip. This function waits for an operation to complete.
*/
static int ql_wait_cfg(struct ql_adapter *qdev, u32 bit)
{
int count;
u32 temp;
for (count = 0; count < UDELAY_COUNT; count++) {
temp = ql_read32(qdev, CFG);
if (temp & CFG_LE)
return -EIO;
if (!(temp & bit))
return 0;
udelay(UDELAY_DELAY);
}
return -ETIMEDOUT;
}
/* Used to issue init control blocks to hw. Maps control block,
* sets address, triggers download, waits for completion.
*/
int ql_write_cfg(struct ql_adapter *qdev, void *ptr, int size, u32 bit,
u16 q_id)
{
u64 map;
int status = 0;
int direction;
u32 mask;
u32 value;
direction =
(bit & (CFG_LRQ | CFG_LR | CFG_LCQ)) ? PCI_DMA_TODEVICE :
PCI_DMA_FROMDEVICE;
map = pci_map_single(qdev->pdev, ptr, size, direction);
if (pci_dma_mapping_error(qdev->pdev, map)) {
netif_err(qdev, ifup, qdev->ndev, "Couldn't map DMA area.\n");
return -ENOMEM;
}
status = ql_sem_spinlock(qdev, SEM_ICB_MASK);
if (status)
return status;
status = ql_wait_cfg(qdev, bit);
if (status) {
netif_err(qdev, ifup, qdev->ndev,
"Timed out waiting for CFG to come ready.\n");
goto exit;
}
ql_write32(qdev, ICB_L, (u32) map);
ql_write32(qdev, ICB_H, (u32) (map >> 32));
mask = CFG_Q_MASK | (bit << 16);
value = bit | (q_id << CFG_Q_SHIFT);
ql_write32(qdev, CFG, (mask | value));
/*
* Wait for the bit to clear after signaling hw.
*/
status = ql_wait_cfg(qdev, bit);
exit:
ql_sem_unlock(qdev, SEM_ICB_MASK); /* does flush too */
pci_unmap_single(qdev->pdev, map, size, direction);
return status;
}
/* Get a specific MAC address from the CAM. Used for debug and reg dump. */
int ql_get_mac_addr_reg(struct ql_adapter *qdev, u32 type, u16 index,
u32 *value)
{
u32 offset = 0;
int status;
switch (type) {
case MAC_ADDR_TYPE_MULTI_MAC:
case MAC_ADDR_TYPE_CAM_MAC:
{
status =
ql_wait_reg_rdy(qdev,
MAC_ADDR_IDX, MAC_ADDR_MW, 0);
if (status)
goto exit;
ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
(index << MAC_ADDR_IDX_SHIFT) | /* index */
MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
status =
ql_wait_reg_rdy(qdev, MAC_ADDR_IDX, MAC_ADDR_MR, 0);
if (status)
goto exit;
*value++ = ql_read32(qdev, MAC_ADDR_DATA);
status =
ql_wait_reg_rdy(qdev, MAC_ADDR_IDX, MAC_ADDR_MW, 0);
if (status)
goto exit;
ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
(index << MAC_ADDR_IDX_SHIFT) | /* index */
MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
status =
ql_wait_reg_rdy(qdev, MAC_ADDR_IDX, MAC_ADDR_MR, 0);
if (status)
goto exit;
*value++ = ql_read32(qdev, MAC_ADDR_DATA);
if (type == MAC_ADDR_TYPE_CAM_MAC) {
status =
ql_wait_reg_rdy(qdev,
MAC_ADDR_IDX, MAC_ADDR_MW,
0);
if (status)
goto exit;
ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
(index << MAC_ADDR_IDX_SHIFT) | /* index */
MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
status =
ql_wait_reg_rdy(qdev, MAC_ADDR_IDX,
MAC_ADDR_MR, 0);
if (status)
goto exit;
*value++ = ql_read32(qdev, MAC_ADDR_DATA);
}
break;
}
case MAC_ADDR_TYPE_VLAN:
case MAC_ADDR_TYPE_MULTI_FLTR:
default:
netif_crit(qdev, ifup, qdev->ndev,
"Address type %d not yet supported.\n", type);
status = -EPERM;
}
exit:
return status;
}
/* Set up a MAC, multicast or VLAN address for the
* inbound frame matching.
*/
static int ql_set_mac_addr_reg(struct ql_adapter *qdev, u8 *addr, u32 type,
u16 index)
{
u32 offset = 0;
int status = 0;
switch (type) {
case MAC_ADDR_TYPE_MULTI_MAC:
{
u32 upper = (addr[0] << 8) | addr[1];
u32 lower = (addr[2] << 24) | (addr[3] << 16) |
(addr[4] << 8) | (addr[5]);
status =
ql_wait_reg_rdy(qdev,
MAC_ADDR_IDX, MAC_ADDR_MW, 0);
if (status)
goto exit;
ql_write32(qdev, MAC_ADDR_IDX, (offset++) |
(index << MAC_ADDR_IDX_SHIFT) |
type | MAC_ADDR_E);
ql_write32(qdev, MAC_ADDR_DATA, lower);
status =
ql_wait_reg_rdy(qdev,
MAC_ADDR_IDX, MAC_ADDR_MW, 0);
if (status)
goto exit;
ql_write32(qdev, MAC_ADDR_IDX, (offset++) |
(index << MAC_ADDR_IDX_SHIFT) |
type | MAC_ADDR_E);
ql_write32(qdev, MAC_ADDR_DATA, upper);
status =
ql_wait_reg_rdy(qdev,
MAC_ADDR_IDX, MAC_ADDR_MW, 0);
if (status)
goto exit;
break;
}
case MAC_ADDR_TYPE_CAM_MAC:
{
u32 cam_output;
u32 upper = (addr[0] << 8) | addr[1];
u32 lower =
(addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) |
(addr[5]);
status =
ql_wait_reg_rdy(qdev, MAC_ADDR_IDX, MAC_ADDR_MW, 0);
if (status)
goto exit;
ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
(index << MAC_ADDR_IDX_SHIFT) | /* index */
type); /* type */
ql_write32(qdev, MAC_ADDR_DATA, lower);
status =
ql_wait_reg_rdy(qdev, MAC_ADDR_IDX, MAC_ADDR_MW, 0);
if (status)
goto exit;
ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
(index << MAC_ADDR_IDX_SHIFT) | /* index */
type); /* type */
ql_write32(qdev, MAC_ADDR_DATA, upper);
status =
ql_wait_reg_rdy(qdev, MAC_ADDR_IDX, MAC_ADDR_MW, 0);
if (status)
goto exit;
ql_write32(qdev, MAC_ADDR_IDX, (offset) | /* offset */
(index << MAC_ADDR_IDX_SHIFT) | /* index */
type); /* type */
/* This field should also include the queue id
* and possibly the function id. Right now we hardcode
* the route field to NIC core.
*/
cam_output = (CAM_OUT_ROUTE_NIC |
(qdev->
func << CAM_OUT_FUNC_SHIFT) |
(0 << CAM_OUT_CQ_ID_SHIFT));
if (qdev->ndev->features & NETIF_F_HW_VLAN_CTAG_RX)
cam_output |= CAM_OUT_RV;
/* route to NIC core */
ql_write32(qdev, MAC_ADDR_DATA, cam_output);
break;
}
case MAC_ADDR_TYPE_VLAN:
{
u32 enable_bit = *((u32 *) &addr[0]);
/* For VLAN, the addr actually holds a bit that
* either enables or disables the vlan id we are
* addressing. It's either MAC_ADDR_E on or off.
* That's bit-27 we're talking about.
*/
status =
ql_wait_reg_rdy(qdev, MAC_ADDR_IDX, MAC_ADDR_MW, 0);
if (status)
goto exit;
ql_write32(qdev, MAC_ADDR_IDX, offset | /* offset */
(index << MAC_ADDR_IDX_SHIFT) | /* index */
type | /* type */
enable_bit); /* enable/disable */
break;
}
case MAC_ADDR_TYPE_MULTI_FLTR:
default:
netif_crit(qdev, ifup, qdev->ndev,
"Address type %d not yet supported.\n", type);
status = -EPERM;
}
exit:
return status;
}
/* Set or clear MAC address in hardware. We sometimes
* have to clear it to prevent wrong frame routing
* especially in a bonding environment.
*/
static int ql_set_mac_addr(struct ql_adapter *qdev, int set)
{
int status;
char zero_mac_addr[ETH_ALEN];
char *addr;
if (set) {
addr = &qdev->current_mac_addr[0];
netif_printk(qdev, ifup, KERN_DEBUG, qdev->ndev,
"Set Mac addr %pM\n", addr);
} else {
eth_zero_addr(zero_mac_addr);
addr = &zero_mac_addr[0];
netif_printk(qdev, ifup, KERN_DEBUG, qdev->ndev,
"Clearing MAC address\n");
}
status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
if (status)
return status;
status = ql_set_mac_addr_reg(qdev, (u8 *) addr,
MAC_ADDR_TYPE_CAM_MAC,
qdev->func * MAX_CQ);
ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
if (status)
netif_err(qdev, ifup, qdev->ndev,
"Failed to init mac address.\n");
return status;
}
void ql_link_on(struct ql_adapter *qdev)
{
netif_err(qdev, link, qdev->ndev, "Link is up.\n");
netif_carrier_on(qdev->ndev);
ql_set_mac_addr(qdev, 1);
}
void ql_link_off(struct ql_adapter *qdev)
{
netif_err(qdev, link, qdev->ndev, "Link is down.\n");
netif_carrier_off(qdev->ndev);
ql_set_mac_addr(qdev, 0);
}
/* Get a specific frame routing value from the CAM.
* Used for debug and reg dump.
*/
int ql_get_routing_reg(struct ql_adapter *qdev, u32 index, u32 *value)
{
int status = 0;
status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MW, 0);
if (status)
goto exit;
ql_write32(qdev, RT_IDX,
RT_IDX_TYPE_NICQ | RT_IDX_RS | (index << RT_IDX_IDX_SHIFT));
status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MR, 0);
if (status)
goto exit;
*value = ql_read32(qdev, RT_DATA);
exit:
return status;
}
/* The NIC function for this chip has 16 routing indexes. Each one can be used
* to route different frame types to various inbound queues. We send broadcast/
* multicast/error frames to the default queue for slow handling,
* and CAM hit/RSS frames to the fast handling queues.
*/
static int ql_set_routing_reg(struct ql_adapter *qdev, u32 index, u32 mask,
int enable)
{
int status = -EINVAL; /* Return error if no mask match. */
u32 value = 0;
switch (mask) {
case RT_IDX_CAM_HIT:
{
value = RT_IDX_DST_CAM_Q | /* dest */
RT_IDX_TYPE_NICQ | /* type */
(RT_IDX_CAM_HIT_SLOT << RT_IDX_IDX_SHIFT);/* index */
break;
}
case RT_IDX_VALID: /* Promiscuous Mode frames. */
{
value = RT_IDX_DST_DFLT_Q | /* dest */
RT_IDX_TYPE_NICQ | /* type */
(RT_IDX_PROMISCUOUS_SLOT << RT_IDX_IDX_SHIFT);/* index */
break;
}
case RT_IDX_ERR: /* Pass up MAC,IP,TCP/UDP error frames. */
{
value = RT_IDX_DST_DFLT_Q | /* dest */
RT_IDX_TYPE_NICQ | /* type */
(RT_IDX_ALL_ERR_SLOT << RT_IDX_IDX_SHIFT);/* index */
break;
}
case RT_IDX_IP_CSUM_ERR: /* Pass up IP CSUM error frames. */
{
value = RT_IDX_DST_DFLT_Q | /* dest */
RT_IDX_TYPE_NICQ | /* type */
(RT_IDX_IP_CSUM_ERR_SLOT <<
RT_IDX_IDX_SHIFT); /* index */
break;
}
case RT_IDX_TU_CSUM_ERR: /* Pass up TCP/UDP CSUM error frames. */
{
value = RT_IDX_DST_DFLT_Q | /* dest */
RT_IDX_TYPE_NICQ | /* type */
(RT_IDX_TCP_UDP_CSUM_ERR_SLOT <<
RT_IDX_IDX_SHIFT); /* index */
break;
}
case RT_IDX_BCAST: /* Pass up Broadcast frames to default Q. */
{
value = RT_IDX_DST_DFLT_Q | /* dest */
RT_IDX_TYPE_NICQ | /* type */
(RT_IDX_BCAST_SLOT << RT_IDX_IDX_SHIFT);/* index */
break;
}
case RT_IDX_MCAST: /* Pass up All Multicast frames. */
{
value = RT_IDX_DST_DFLT_Q | /* dest */
RT_IDX_TYPE_NICQ | /* type */
(RT_IDX_ALLMULTI_SLOT << RT_IDX_IDX_SHIFT);/* index */
break;
}
case RT_IDX_MCAST_MATCH: /* Pass up matched Multicast frames. */
{
value = RT_IDX_DST_DFLT_Q | /* dest */
RT_IDX_TYPE_NICQ | /* type */
(RT_IDX_MCAST_MATCH_SLOT << RT_IDX_IDX_SHIFT);/* index */
break;
}
case RT_IDX_RSS_MATCH: /* Pass up matched RSS frames. */
{
value = RT_IDX_DST_RSS | /* dest */
RT_IDX_TYPE_NICQ | /* type */
(RT_IDX_RSS_MATCH_SLOT << RT_IDX_IDX_SHIFT);/* index */
break;
}
case 0: /* Clear the E-bit on an entry. */
{
value = RT_IDX_DST_DFLT_Q | /* dest */
RT_IDX_TYPE_NICQ | /* type */
(index << RT_IDX_IDX_SHIFT);/* index */
break;
}
default:
netif_err(qdev, ifup, qdev->ndev,
"Mask type %d not yet supported.\n", mask);
status = -EPERM;
goto exit;
}
if (value) {
status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MW, 0);
if (status)
goto exit;
value |= (enable ? RT_IDX_E : 0);
ql_write32(qdev, RT_IDX, value);
ql_write32(qdev, RT_DATA, enable ? mask : 0);
}
exit:
return status;
}
static void ql_enable_interrupts(struct ql_adapter *qdev)
{
ql_write32(qdev, INTR_EN, (INTR_EN_EI << 16) | INTR_EN_EI);
}
static void ql_disable_interrupts(struct ql_adapter *qdev)
{
ql_write32(qdev, INTR_EN, (INTR_EN_EI << 16));
}
static void ql_enable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
{
struct intr_context *ctx = &qdev->intr_context[intr];
ql_write32(qdev, INTR_EN, ctx->intr_en_mask);
}
static void ql_disable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
{
struct intr_context *ctx = &qdev->intr_context[intr];
ql_write32(qdev, INTR_EN, ctx->intr_dis_mask);
}
static void ql_enable_all_completion_interrupts(struct ql_adapter *qdev)
{
int i;
for (i = 0; i < qdev->intr_count; i++)
ql_enable_completion_interrupt(qdev, i);
}
static int ql_validate_flash(struct ql_adapter *qdev, u32 size, const char *str)
{
int status, i;
u16 csum = 0;
__le16 *flash = (__le16 *)&qdev->flash;
status = strncmp((char *)&qdev->flash, str, 4);
if (status) {
netif_err(qdev, ifup, qdev->ndev, "Invalid flash signature.\n");
return status;
}
for (i = 0; i < size; i++)
csum += le16_to_cpu(*flash++);
if (csum)
netif_err(qdev, ifup, qdev->ndev,
"Invalid flash checksum, csum = 0x%.04x.\n", csum);
return csum;
}
static int ql_read_flash_word(struct ql_adapter *qdev, int offset, __le32 *data)
{
int status = 0;
/* wait for reg to come ready */
status = ql_wait_reg_rdy(qdev,
FLASH_ADDR, FLASH_ADDR_RDY, FLASH_ADDR_ERR);
if (status)
goto exit;
/* set up for reg read */
ql_write32(qdev, FLASH_ADDR, FLASH_ADDR_R | offset);
/* wait for reg to come ready */
status = ql_wait_reg_rdy(qdev,
FLASH_ADDR, FLASH_ADDR_RDY, FLASH_ADDR_ERR);
if (status)
goto exit;
/* This data is stored on flash as an array of
* __le32. Since ql_read32() returns cpu endian
* we need to swap it back.
*/
*data = cpu_to_le32(ql_read32(qdev, FLASH_DATA));
exit:
return status;
}
static int ql_get_8000_flash_params(struct ql_adapter *qdev)
{
u32 i, size;
int status;
__le32 *p = (__le32 *)&qdev->flash;
u32 offset;
u8 mac_addr[6];
/* Get flash offset for function and adjust
* for dword access.
*/
if (!qdev->port)
offset = FUNC0_FLASH_OFFSET / sizeof(u32);
else
offset = FUNC1_FLASH_OFFSET / sizeof(u32);
if (ql_sem_spinlock(qdev, SEM_FLASH_MASK))
return -ETIMEDOUT;
size = sizeof(struct flash_params_8000) / sizeof(u32);
for (i = 0; i < size; i++, p++) {
status = ql_read_flash_word(qdev, i+offset, p);
if (status) {
netif_err(qdev, ifup, qdev->ndev,
"Error reading flash.\n");
goto exit;
}
}
status = ql_validate_flash(qdev,
sizeof(struct flash_params_8000) /
sizeof(u16),
"8000");
if (status) {
netif_err(qdev, ifup, qdev->ndev, "Invalid flash.\n");
status = -EINVAL;
goto exit;
}
/* Extract either manufacturer or BOFM modified
* MAC address.
*/
if (qdev->flash.flash_params_8000.data_type1 == 2)
memcpy(mac_addr,
qdev->flash.flash_params_8000.mac_addr1,
qdev->ndev->addr_len);
else
memcpy(mac_addr,
qdev->flash.flash_params_8000.mac_addr,
qdev->ndev->addr_len);
if (!is_valid_ether_addr(mac_addr)) {
netif_err(qdev, ifup, qdev->ndev, "Invalid MAC address.\n");
status = -EINVAL;
goto exit;
}
memcpy(qdev->ndev->dev_addr,
mac_addr,
qdev->ndev->addr_len);
exit:
ql_sem_unlock(qdev, SEM_FLASH_MASK);
return status;
}
static int ql_get_8012_flash_params(struct ql_adapter *qdev)
{
int i;
int status;
__le32 *p = (__le32 *)&qdev->flash;
u32 offset = 0;
u32 size = sizeof(struct flash_params_8012) / sizeof(u32);
/* Second function's parameters follow the first
* function's.
*/
if (qdev->port)
offset = size;
if (ql_sem_spinlock(qdev, SEM_FLASH_MASK))
return -ETIMEDOUT;
for (i = 0; i < size; i++, p++) {
status = ql_read_flash_word(qdev, i+offset, p);
if (status) {
netif_err(qdev, ifup, qdev->ndev,
"Error reading flash.\n");
goto exit;
}
}
status = ql_validate_flash(qdev,
sizeof(struct flash_params_8012) /
sizeof(u16),
"8012");
if (status) {
netif_err(qdev, ifup, qdev->ndev, "Invalid flash.\n");
status = -EINVAL;
goto exit;
}
if (!is_valid_ether_addr(qdev->flash.flash_params_8012.mac_addr)) {
status = -EINVAL;
goto exit;
}
memcpy(qdev->ndev->dev_addr,
qdev->flash.flash_params_8012.mac_addr,
qdev->ndev->addr_len);
exit:
ql_sem_unlock(qdev, SEM_FLASH_MASK);
return status;
}
/* xgmac register are located behind the xgmac_addr and xgmac_data
* register pair. Each read/write requires us to wait for the ready
* bit before reading/writing the data.
*/
static int ql_write_xgmac_reg(struct ql_adapter *qdev, u32 reg, u32 data)
{
int status;
/* wait for reg to come ready */
status = ql_wait_reg_rdy(qdev,
XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
if (status)
return status;
/* write the data to the data reg */
ql_write32(qdev, XGMAC_DATA, data);
/* trigger the write */
ql_write32(qdev, XGMAC_ADDR, reg);
return status;
}
/* xgmac register are located behind the xgmac_addr and xgmac_data
* register pair. Each read/write requires us to wait for the ready
* bit before reading/writing the data.
*/
int ql_read_xgmac_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
{
int status = 0;
/* wait for reg to come ready */
status = ql_wait_reg_rdy(qdev,
XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
if (status)
goto exit;
/* set up for reg read */
ql_write32(qdev, XGMAC_ADDR, reg | XGMAC_ADDR_R);
/* wait for reg to come ready */
status = ql_wait_reg_rdy(qdev,
XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
if (status)
goto exit;
/* get the data */
*data = ql_read32(qdev, XGMAC_DATA);
exit:
return status;
}
/* This is used for reading the 64-bit statistics regs. */
int ql_read_xgmac_reg64(struct ql_adapter *qdev, u32 reg, u64 *data)
{
int status = 0;
u32 hi = 0;
u32 lo = 0;
status = ql_read_xgmac_reg(qdev, reg, &lo);
if (status)
goto exit;
status = ql_read_xgmac_reg(qdev, reg + 4, &hi);
if (status)
goto exit;
*data = (u64) lo | ((u64) hi << 32);
exit:
return status;
}
static int ql_8000_port_initialize(struct ql_adapter *qdev)
{
int status;
/*
* Get MPI firmware version for driver banner
* and ethool info.
*/
status = ql_mb_about_fw(qdev);
if (status)
goto exit;
status = ql_mb_get_fw_state(qdev);
if (status)
goto exit;
/* Wake up a worker to get/set the TX/RX frame sizes. */
queue_delayed_work(qdev->workqueue, &qdev->mpi_port_cfg_work, 0);
exit:
return status;
}
/* Take the MAC Core out of reset.
* Enable statistics counting.
* Take the transmitter/receiver out of reset.
* This functionality may be done in the MPI firmware at a
* later date.
*/
static int ql_8012_port_initialize(struct ql_adapter *qdev)
{
int status = 0;
u32 data;
if (ql_sem_trylock(qdev, qdev->xg_sem_mask)) {
/* Another function has the semaphore, so
* wait for the port init bit to come ready.
*/
netif_info(qdev, link, qdev->ndev,
"Another function has the semaphore, so wait for the port init bit to come ready.\n");
status = ql_wait_reg_rdy(qdev, STS, qdev->port_init, 0);
if (status) {
netif_crit(qdev, link, qdev->ndev,
"Port initialize timed out.\n");
}
return status;
}
netif_info(qdev, link, qdev->ndev, "Got xgmac semaphore!.\n");
/* Set the core reset. */
status = ql_read_xgmac_reg(qdev, GLOBAL_CFG, &data);
if (status)
goto end;
data |= GLOBAL_CFG_RESET;
status = ql_write_xgmac_reg(qdev, GLOBAL_CFG, data);
if (status)
goto end;
/* Clear the core reset and turn on jumbo for receiver. */
data &= ~GLOBAL_CFG_RESET; /* Clear core reset. */
data |= GLOBAL_CFG_JUMBO; /* Turn on jumbo. */
data |= GLOBAL_CFG_TX_STAT_EN;
data |= GLOBAL_CFG_RX_STAT_EN;
status = ql_write_xgmac_reg(qdev, GLOBAL_CFG, data);
if (status)
goto end;
/* Enable transmitter, and clear it's reset. */
status = ql_read_xgmac_reg(qdev, TX_CFG, &data);
if (status)
goto end;
data &= ~TX_CFG_RESET; /* Clear the TX MAC reset. */
data |= TX_CFG_EN; /* Enable the transmitter. */
status = ql_write_xgmac_reg(qdev, TX_CFG, data);
if (status)
goto end;
/* Enable receiver and clear it's reset. */
status = ql_read_xgmac_reg(qdev, RX_CFG, &data);
if (status)
goto end;
data &= ~RX_CFG_RESET; /* Clear the RX MAC reset. */
data |= RX_CFG_EN; /* Enable the receiver. */
status = ql_write_xgmac_reg(qdev, RX_CFG, data);
if (status)
goto end;
/* Turn on jumbo. */
status =
ql_write_xgmac_reg(qdev, MAC_TX_PARAMS, MAC_TX_PARAMS_JUMBO | (0x2580 << 16));
if (status)
goto end;
status =
ql_write_xgmac_reg(qdev, MAC_RX_PARAMS, 0x2580);
if (status)
goto end;
/* Signal to the world that the port is enabled. */
ql_write32(qdev, STS, ((qdev->port_init << 16) | qdev->port_init));
end:
ql_sem_unlock(qdev, qdev->xg_sem_mask);
return status;
}
static inline unsigned int ql_lbq_block_size(struct ql_adapter *qdev)
{
return PAGE_SIZE << qdev->lbq_buf_order;
}
static struct qlge_bq_desc *qlge_get_curr_buf(struct qlge_bq *bq)
{
struct qlge_bq_desc *bq_desc;
bq_desc = &bq->queue[bq->next_to_clean];
bq->next_to_clean = QLGE_BQ_WRAP(bq->next_to_clean + 1);
return bq_desc;
}
static struct qlge_bq_desc *ql_get_curr_lchunk(struct ql_adapter *qdev,
struct rx_ring *rx_ring)
{
struct qlge_bq_desc *lbq_desc = qlge_get_curr_buf(&rx_ring->lbq);
pci_dma_sync_single_for_cpu(qdev->pdev, lbq_desc->dma_addr,
qdev->lbq_buf_size, PCI_DMA_FROMDEVICE);
if ((lbq_desc->p.pg_chunk.offset + qdev->lbq_buf_size) ==
ql_lbq_block_size(qdev)) {
/* last chunk of the master page */
pci_unmap_page(qdev->pdev, lbq_desc->dma_addr,
ql_lbq_block_size(qdev), PCI_DMA_FROMDEVICE);
}
return lbq_desc;
}
/* Update an rx ring index. */
static void ql_update_cq(struct rx_ring *rx_ring)
{
rx_ring->cnsmr_idx++;
rx_ring->curr_entry++;
if (unlikely(rx_ring->cnsmr_idx == rx_ring->cq_len)) {
rx_ring->cnsmr_idx = 0;
rx_ring->curr_entry = rx_ring->cq_base;
}
}
static void ql_write_cq_idx(struct rx_ring *rx_ring)
{
ql_write_db_reg(rx_ring->cnsmr_idx, rx_ring->cnsmr_idx_db_reg);
}
static const char * const bq_type_name[] = {
[QLGE_SB] = "sbq",
[QLGE_LB] = "lbq",
};
/* return 0 or negative error */
static int qlge_refill_sb(struct rx_ring *rx_ring,
struct qlge_bq_desc *sbq_desc, gfp_t gfp)
{
struct ql_adapter *qdev = rx_ring->qdev;
struct sk_buff *skb;
if (sbq_desc->p.skb)
return 0;
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"ring %u sbq: getting new skb for index %d.\n",
rx_ring->cq_id, sbq_desc->index);
skb = __netdev_alloc_skb(qdev->ndev, SMALL_BUFFER_SIZE, gfp);
if (!skb)
return -ENOMEM;
skb_reserve(skb, QLGE_SB_PAD);
sbq_desc->dma_addr = pci_map_single(qdev->pdev, skb->data,
SMALL_BUF_MAP_SIZE,
PCI_DMA_FROMDEVICE);
if (pci_dma_mapping_error(qdev->pdev, sbq_desc->dma_addr)) {
netif_err(qdev, ifup, qdev->ndev, "PCI mapping failed.\n");
dev_kfree_skb_any(skb);
return -EIO;
}
*sbq_desc->buf_ptr = cpu_to_le64(sbq_desc->dma_addr);
sbq_desc->p.skb = skb;
return 0;
}
/* return 0 or negative error */
static int qlge_refill_lb(struct rx_ring *rx_ring,
struct qlge_bq_desc *lbq_desc, gfp_t gfp)
{
struct ql_adapter *qdev = rx_ring->qdev;
struct qlge_page_chunk *master_chunk = &rx_ring->master_chunk;
if (!master_chunk->page) {
struct page *page;
dma_addr_t dma_addr;
page = alloc_pages(gfp | __GFP_COMP, qdev->lbq_buf_order);
if (unlikely(!page))
return -ENOMEM;
dma_addr = pci_map_page(qdev->pdev, page, 0,
ql_lbq_block_size(qdev),
PCI_DMA_FROMDEVICE);
if (pci_dma_mapping_error(qdev->pdev, dma_addr)) {
__free_pages(page, qdev->lbq_buf_order);
netif_err(qdev, drv, qdev->ndev,
"PCI mapping failed.\n");
return -EIO;
}
master_chunk->page = page;
master_chunk->va = page_address(page);
master_chunk->offset = 0;
rx_ring->chunk_dma_addr = dma_addr;
}
lbq_desc->p.pg_chunk = *master_chunk;
lbq_desc->dma_addr = rx_ring->chunk_dma_addr;
*lbq_desc->buf_ptr = cpu_to_le64(lbq_desc->dma_addr +
lbq_desc->p.pg_chunk.offset);
/* Adjust the master page chunk for next
* buffer get.
*/
master_chunk->offset += qdev->lbq_buf_size;
if (master_chunk->offset == ql_lbq_block_size(qdev)) {
master_chunk->page = NULL;
} else {
master_chunk->va += qdev->lbq_buf_size;
get_page(master_chunk->page);
}
return 0;
}
/* return 0 or negative error */
static int qlge_refill_bq(struct qlge_bq *bq, gfp_t gfp)
{
struct rx_ring *rx_ring = QLGE_BQ_CONTAINER(bq);
struct ql_adapter *qdev = rx_ring->qdev;
struct qlge_bq_desc *bq_desc;
int refill_count;
int retval;
int i;
refill_count = QLGE_BQ_WRAP(QLGE_BQ_ALIGN(bq->next_to_clean - 1) -
bq->next_to_use);
if (!refill_count)
return 0;
i = bq->next_to_use;
bq_desc = &bq->queue[i];
i -= QLGE_BQ_LEN;
do {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"ring %u %s: try cleaning idx %d\n",
rx_ring->cq_id, bq_type_name[bq->type], i);
if (bq->type == QLGE_SB)
retval = qlge_refill_sb(rx_ring, bq_desc, gfp);
else
retval = qlge_refill_lb(rx_ring, bq_desc, gfp);
if (retval < 0) {
netif_err(qdev, ifup, qdev->ndev,
"ring %u %s: Could not get a page chunk, idx %d\n",
rx_ring->cq_id, bq_type_name[bq->type], i);
break;
}
bq_desc++;
i++;
if (unlikely(!i)) {
bq_desc = &bq->queue[0];
i -= QLGE_BQ_LEN;
}
refill_count--;
} while (refill_count);
i += QLGE_BQ_LEN;
if (bq->next_to_use != i) {
if (QLGE_BQ_ALIGN(bq->next_to_use) != QLGE_BQ_ALIGN(i)) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"ring %u %s: updating prod idx = %d.\n",
rx_ring->cq_id, bq_type_name[bq->type],
i);
ql_write_db_reg(i, bq->prod_idx_db_reg);
}
bq->next_to_use = i;
}
return retval;
}
static void ql_update_buffer_queues(struct rx_ring *rx_ring, gfp_t gfp,
unsigned long delay)
{
bool sbq_fail, lbq_fail;
sbq_fail = !!qlge_refill_bq(&rx_ring->sbq, gfp);
lbq_fail = !!qlge_refill_bq(&rx_ring->lbq, gfp);
/* Minimum number of buffers needed to be able to receive at least one
* frame of any format:
* sbq: 1 for header + 1 for data
* lbq: mtu 9000 / lb size
* Below this, the queue might stall.
*/
if ((sbq_fail && QLGE_BQ_HW_OWNED(&rx_ring->sbq) < 2) ||
(lbq_fail && QLGE_BQ_HW_OWNED(&rx_ring->lbq) <
DIV_ROUND_UP(9000, LARGE_BUFFER_MAX_SIZE)))
/* Allocations can take a long time in certain cases (ex.
* reclaim). Therefore, use a workqueue for long-running
* work items.
*/
queue_delayed_work_on(smp_processor_id(), system_long_wq,
&rx_ring->refill_work, delay);
}
static void qlge_slow_refill(struct work_struct *work)
{
struct rx_ring *rx_ring = container_of(work, struct rx_ring,
refill_work.work);
struct napi_struct *napi = &rx_ring->napi;
napi_disable(napi);
ql_update_buffer_queues(rx_ring, GFP_KERNEL, HZ / 2);
napi_enable(napi);
local_bh_disable();
/* napi_disable() might have prevented incomplete napi work from being
* rescheduled.
*/
napi_schedule(napi);
/* trigger softirq processing */
local_bh_enable();
}
/* Unmaps tx buffers. Can be called from send() if a pci mapping
* fails at some stage, or from the interrupt when a tx completes.
*/
static void ql_unmap_send(struct ql_adapter *qdev,
struct tx_ring_desc *tx_ring_desc, int mapped)
{
int i;
for (i = 0; i < mapped; i++) {
if (i == 0 || (i == 7 && mapped > 7)) {
/*
* Unmap the skb->data area, or the
* external sglist (AKA the Outbound
* Address List (OAL)).
* If its the zeroeth element, then it's
* the skb->data area. If it's the 7th
* element and there is more than 6 frags,
* then its an OAL.
*/
if (i == 7) {
netif_printk(qdev, tx_done, KERN_DEBUG,
qdev->ndev,
"unmapping OAL area.\n");
}
pci_unmap_single(qdev->pdev,
dma_unmap_addr(&tx_ring_desc->map[i],
mapaddr),
dma_unmap_len(&tx_ring_desc->map[i],
maplen),
PCI_DMA_TODEVICE);
} else {
netif_printk(qdev, tx_done, KERN_DEBUG, qdev->ndev,
"unmapping frag %d.\n", i);
pci_unmap_page(qdev->pdev,
dma_unmap_addr(&tx_ring_desc->map[i],
mapaddr),
dma_unmap_len(&tx_ring_desc->map[i],
maplen), PCI_DMA_TODEVICE);
}
}
}
/* Map the buffers for this transmit. This will return
* NETDEV_TX_BUSY or NETDEV_TX_OK based on success.
*/
static int ql_map_send(struct ql_adapter *qdev,
struct ob_mac_iocb_req *mac_iocb_ptr,
struct sk_buff *skb, struct tx_ring_desc *tx_ring_desc)
{
int len = skb_headlen(skb);
dma_addr_t map;
int frag_idx, err, map_idx = 0;
struct tx_buf_desc *tbd = mac_iocb_ptr->tbd;
int frag_cnt = skb_shinfo(skb)->nr_frags;
if (frag_cnt) {
netif_printk(qdev, tx_queued, KERN_DEBUG, qdev->ndev,
"frag_cnt = %d.\n", frag_cnt);
}
/*
* Map the skb buffer first.
*/
map = pci_map_single(qdev->pdev, skb->data, len, PCI_DMA_TODEVICE);
err = pci_dma_mapping_error(qdev->pdev, map);
if (err) {
netif_err(qdev, tx_queued, qdev->ndev,
"PCI mapping failed with error: %d\n", err);
return NETDEV_TX_BUSY;
}
tbd->len = cpu_to_le32(len);
tbd->addr = cpu_to_le64(map);
dma_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr, map);
dma_unmap_len_set(&tx_ring_desc->map[map_idx], maplen, len);
map_idx++;
/*
* This loop fills the remainder of the 8 address descriptors
* in the IOCB. If there are more than 7 fragments, then the
* eighth address desc will point to an external list (OAL).
* When this happens, the remainder of the frags will be stored
* in this list.
*/
for (frag_idx = 0; frag_idx < frag_cnt; frag_idx++, map_idx++) {
skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_idx];
tbd++;
if (frag_idx == 6 && frag_cnt > 7) {
/* Let's tack on an sglist.
* Our control block will now
* look like this:
* iocb->seg[0] = skb->data
* iocb->seg[1] = frag[0]
* iocb->seg[2] = frag[1]
* iocb->seg[3] = frag[2]
* iocb->seg[4] = frag[3]
* iocb->seg[5] = frag[4]
* iocb->seg[6] = frag[5]
* iocb->seg[7] = ptr to OAL (external sglist)
* oal->seg[0] = frag[6]
* oal->seg[1] = frag[7]
* oal->seg[2] = frag[8]
* oal->seg[3] = frag[9]
* oal->seg[4] = frag[10]
* etc...
*/
/* Tack on the OAL in the eighth segment of IOCB. */
map = pci_map_single(qdev->pdev, &tx_ring_desc->oal,
sizeof(struct oal),
PCI_DMA_TODEVICE);
err = pci_dma_mapping_error(qdev->pdev, map);
if (err) {
netif_err(qdev, tx_queued, qdev->ndev,
"PCI mapping outbound address list with error: %d\n",
err);
goto map_error;
}
tbd->addr = cpu_to_le64(map);
/*
* The length is the number of fragments
* that remain to be mapped times the length
* of our sglist (OAL).
*/
tbd->len =
cpu_to_le32((sizeof(struct tx_buf_desc) *
(frag_cnt - frag_idx)) | TX_DESC_C);
dma_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr,
map);
dma_unmap_len_set(&tx_ring_desc->map[map_idx], maplen,
sizeof(struct oal));
tbd = (struct tx_buf_desc *)&tx_ring_desc->oal;
map_idx++;
}
map = skb_frag_dma_map(&qdev->pdev->dev, frag, 0, skb_frag_size(frag),
DMA_TO_DEVICE);
err = dma_mapping_error(&qdev->pdev->dev, map);
if (err) {
netif_err(qdev, tx_queued, qdev->ndev,
"PCI mapping frags failed with error: %d.\n",
err);
goto map_error;
}
tbd->addr = cpu_to_le64(map);
tbd->len = cpu_to_le32(skb_frag_size(frag));
dma_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr, map);
dma_unmap_len_set(&tx_ring_desc->map[map_idx], maplen,
skb_frag_size(frag));
}
/* Save the number of segments we've mapped. */
tx_ring_desc->map_cnt = map_idx;
/* Terminate the last segment. */
tbd->len = cpu_to_le32(le32_to_cpu(tbd->len) | TX_DESC_E);
return NETDEV_TX_OK;
map_error:
/*
* If the first frag mapping failed, then i will be zero.
* This causes the unmap of the skb->data area. Otherwise
* we pass in the number of frags that mapped successfully
* so they can be umapped.
*/
ql_unmap_send(qdev, tx_ring_desc, map_idx);
return NETDEV_TX_BUSY;
}
/* Categorizing receive firmware frame errors */
static void ql_categorize_rx_err(struct ql_adapter *qdev, u8 rx_err,
struct rx_ring *rx_ring)
{
struct nic_stats *stats = &qdev->nic_stats;
stats->rx_err_count++;
rx_ring->rx_errors++;
switch (rx_err & IB_MAC_IOCB_RSP_ERR_MASK) {
case IB_MAC_IOCB_RSP_ERR_CODE_ERR:
stats->rx_code_err++;
break;
case IB_MAC_IOCB_RSP_ERR_OVERSIZE:
stats->rx_oversize_err++;
break;
case IB_MAC_IOCB_RSP_ERR_UNDERSIZE:
stats->rx_undersize_err++;
break;
case IB_MAC_IOCB_RSP_ERR_PREAMBLE:
stats->rx_preamble_err++;
break;
case IB_MAC_IOCB_RSP_ERR_FRAME_LEN:
stats->rx_frame_len_err++;
break;
case IB_MAC_IOCB_RSP_ERR_CRC:
stats->rx_crc_err++;
default:
break;
}
}
/**
* ql_update_mac_hdr_len - helper routine to update the mac header length
* based on vlan tags if present
*/
static void ql_update_mac_hdr_len(struct ql_adapter *qdev,
struct ib_mac_iocb_rsp *ib_mac_rsp,
void *page, size_t *len)
{
u16 *tags;
if (qdev->ndev->features & NETIF_F_HW_VLAN_CTAG_RX)
return;
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) {
tags = (u16 *)page;
/* Look for stacked vlan tags in ethertype field */
if (tags[6] == ETH_P_8021Q &&
tags[8] == ETH_P_8021Q)
*len += 2 * VLAN_HLEN;
else
*len += VLAN_HLEN;
}
}
/* Process an inbound completion from an rx ring. */
static void ql_process_mac_rx_gro_page(struct ql_adapter *qdev,
struct rx_ring *rx_ring,
struct ib_mac_iocb_rsp *ib_mac_rsp,
u32 length, u16 vlan_id)
{
struct sk_buff *skb;
struct qlge_bq_desc *lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
struct napi_struct *napi = &rx_ring->napi;
/* Frame error, so drop the packet. */
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
ql_categorize_rx_err(qdev, ib_mac_rsp->flags2, rx_ring);
put_page(lbq_desc->p.pg_chunk.page);
return;
}
napi->dev = qdev->ndev;
skb = napi_get_frags(napi);
if (!skb) {
netif_err(qdev, drv, qdev->ndev,
"Couldn't get an skb, exiting.\n");
rx_ring->rx_dropped++;
put_page(lbq_desc->p.pg_chunk.page);
return;
}
prefetch(lbq_desc->p.pg_chunk.va);
__skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
lbq_desc->p.pg_chunk.page,
lbq_desc->p.pg_chunk.offset,
length);
skb->len += length;
skb->data_len += length;
skb->truesize += length;
skb_shinfo(skb)->nr_frags++;
rx_ring->rx_packets++;
rx_ring->rx_bytes += length;
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb_record_rx_queue(skb, rx_ring->cq_id);
if (vlan_id != 0xffff)
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_id);
napi_gro_frags(napi);
}
/* Process an inbound completion from an rx ring. */
static void ql_process_mac_rx_page(struct ql_adapter *qdev,
struct rx_ring *rx_ring,
struct ib_mac_iocb_rsp *ib_mac_rsp,
u32 length, u16 vlan_id)
{
struct net_device *ndev = qdev->ndev;
struct sk_buff *skb = NULL;
void *addr;
struct qlge_bq_desc *lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
struct napi_struct *napi = &rx_ring->napi;
size_t hlen = ETH_HLEN;
skb = netdev_alloc_skb(ndev, length);
if (!skb) {
rx_ring->rx_dropped++;
put_page(lbq_desc->p.pg_chunk.page);
return;
}
addr = lbq_desc->p.pg_chunk.va;
prefetch(addr);
/* Frame error, so drop the packet. */
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
ql_categorize_rx_err(qdev, ib_mac_rsp->flags2, rx_ring);
goto err_out;
}
/* Update the MAC header length*/
ql_update_mac_hdr_len(qdev, ib_mac_rsp, addr, &hlen);
/* The max framesize filter on this chip is set higher than
* MTU since FCoE uses 2k frames.
*/
if (skb->len > ndev->mtu + hlen) {
netif_err(qdev, drv, qdev->ndev,
"Segment too small, dropping.\n");
rx_ring->rx_dropped++;
goto err_out;
}
skb_put_data(skb, addr, hlen);
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"%d bytes of headers and data in large. Chain page to new skb and pull tail.\n",
length);
skb_fill_page_desc(skb, 0, lbq_desc->p.pg_chunk.page,
lbq_desc->p.pg_chunk.offset + hlen, length - hlen);
skb->len += length - hlen;
skb->data_len += length - hlen;
skb->truesize += length - hlen;
rx_ring->rx_packets++;
rx_ring->rx_bytes += skb->len;
skb->protocol = eth_type_trans(skb, ndev);
skb_checksum_none_assert(skb);
if ((ndev->features & NETIF_F_RXCSUM) &&
!(ib_mac_rsp->flags1 & IB_MAC_CSUM_ERR_MASK)) {
/* TCP frame. */
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"TCP checksum done!\n");
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else if ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
(ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_V4)) {
/* Unfragmented ipv4 UDP frame. */
struct iphdr *iph =
(struct iphdr *)((u8 *)addr + hlen);
if (!(iph->frag_off &
htons(IP_MF|IP_OFFSET))) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
netif_printk(qdev, rx_status, KERN_DEBUG,
qdev->ndev,
"UDP checksum done!\n");
}
}
}
skb_record_rx_queue(skb, rx_ring->cq_id);
if (vlan_id != 0xffff)
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_id);
if (skb->ip_summed == CHECKSUM_UNNECESSARY)
napi_gro_receive(napi, skb);
else
netif_receive_skb(skb);
return;
err_out:
dev_kfree_skb_any(skb);
put_page(lbq_desc->p.pg_chunk.page);
}
/* Process an inbound completion from an rx ring. */
static void ql_process_mac_rx_skb(struct ql_adapter *qdev,
struct rx_ring *rx_ring,
struct ib_mac_iocb_rsp *ib_mac_rsp,
u32 length, u16 vlan_id)
{
struct qlge_bq_desc *sbq_desc = qlge_get_curr_buf(&rx_ring->sbq);
struct net_device *ndev = qdev->ndev;
struct sk_buff *skb, *new_skb;
skb = sbq_desc->p.skb;
/* Allocate new_skb and copy */
new_skb = netdev_alloc_skb(qdev->ndev, length + NET_IP_ALIGN);
if (!new_skb) {
rx_ring->rx_dropped++;
return;
}
skb_reserve(new_skb, NET_IP_ALIGN);
pci_dma_sync_single_for_cpu(qdev->pdev, sbq_desc->dma_addr,
SMALL_BUF_MAP_SIZE, PCI_DMA_FROMDEVICE);
skb_put_data(new_skb, skb->data, length);
skb = new_skb;
/* Frame error, so drop the packet. */
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
ql_categorize_rx_err(qdev, ib_mac_rsp->flags2, rx_ring);
dev_kfree_skb_any(skb);
return;
}
/* loopback self test for ethtool */
if (test_bit(QL_SELFTEST, &qdev->flags)) {
ql_check_lb_frame(qdev, skb);
dev_kfree_skb_any(skb);
return;
}
/* The max framesize filter on this chip is set higher than
* MTU since FCoE uses 2k frames.
*/
if (skb->len > ndev->mtu + ETH_HLEN) {
dev_kfree_skb_any(skb);
rx_ring->rx_dropped++;
return;
}
prefetch(skb->data);
if (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"%s Multicast.\n",
(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
IB_MAC_IOCB_RSP_M_HASH ? "Hash" :
(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
IB_MAC_IOCB_RSP_M_REG ? "Registered" :
(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
IB_MAC_IOCB_RSP_M_PROM ? "Promiscuous" : "");
}
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_P)
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"Promiscuous Packet.\n");
rx_ring->rx_packets++;
rx_ring->rx_bytes += skb->len;
skb->protocol = eth_type_trans(skb, ndev);
skb_checksum_none_assert(skb);
/* If rx checksum is on, and there are no
* csum or frame errors.
*/
if ((ndev->features & NETIF_F_RXCSUM) &&
!(ib_mac_rsp->flags1 & IB_MAC_CSUM_ERR_MASK)) {
/* TCP frame. */
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"TCP checksum done!\n");
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else if ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
(ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_V4)) {
/* Unfragmented ipv4 UDP frame. */
struct iphdr *iph = (struct iphdr *) skb->data;
if (!(iph->frag_off &
htons(IP_MF|IP_OFFSET))) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
netif_printk(qdev, rx_status, KERN_DEBUG,
qdev->ndev,
"UDP checksum done!\n");
}
}
}
skb_record_rx_queue(skb, rx_ring->cq_id);
if (vlan_id != 0xffff)
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_id);
if (skb->ip_summed == CHECKSUM_UNNECESSARY)
napi_gro_receive(&rx_ring->napi, skb);
else
netif_receive_skb(skb);
}
static void ql_realign_skb(struct sk_buff *skb, int len)
{
void *temp_addr = skb->data;
/* Undo the skb_reserve(skb,32) we did before
* giving to hardware, and realign data on
* a 2-byte boundary.
*/
skb->data -= QLGE_SB_PAD - NET_IP_ALIGN;
skb->tail -= QLGE_SB_PAD - NET_IP_ALIGN;
memmove(skb->data, temp_addr, len);
}
/*
* This function builds an skb for the given inbound
* completion. It will be rewritten for readability in the near
* future, but for not it works well.
*/
static struct sk_buff *ql_build_rx_skb(struct ql_adapter *qdev,
struct rx_ring *rx_ring,
struct ib_mac_iocb_rsp *ib_mac_rsp)
{
u32 length = le32_to_cpu(ib_mac_rsp->data_len);
u32 hdr_len = le32_to_cpu(ib_mac_rsp->hdr_len);
struct qlge_bq_desc *lbq_desc, *sbq_desc;
struct sk_buff *skb = NULL;
size_t hlen = ETH_HLEN;
/*
* Handle the header buffer if present.
*/
if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HV &&
ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"Header of %d bytes in small buffer.\n", hdr_len);
/*
* Headers fit nicely into a small buffer.
*/
sbq_desc = qlge_get_curr_buf(&rx_ring->sbq);
pci_unmap_single(qdev->pdev, sbq_desc->dma_addr,
SMALL_BUF_MAP_SIZE, PCI_DMA_FROMDEVICE);
skb = sbq_desc->p.skb;
ql_realign_skb(skb, hdr_len);
skb_put(skb, hdr_len);
sbq_desc->p.skb = NULL;
}
/*
* Handle the data buffer(s).
*/
if (unlikely(!length)) { /* Is there data too? */
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"No Data buffer in this packet.\n");
return skb;
}
if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DS) {
if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"Headers in small, data of %d bytes in small, combine them.\n",
length);
/*
* Data is less than small buffer size so it's
* stuffed in a small buffer.
* For this case we append the data
* from the "data" small buffer to the "header" small
* buffer.
*/
sbq_desc = qlge_get_curr_buf(&rx_ring->sbq);
pci_dma_sync_single_for_cpu(qdev->pdev,
sbq_desc->dma_addr,
SMALL_BUF_MAP_SIZE,
PCI_DMA_FROMDEVICE);
skb_put_data(skb, sbq_desc->p.skb->data, length);
} else {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"%d bytes in a single small buffer.\n",
length);
sbq_desc = qlge_get_curr_buf(&rx_ring->sbq);
skb = sbq_desc->p.skb;
ql_realign_skb(skb, length);
skb_put(skb, length);
pci_unmap_single(qdev->pdev, sbq_desc->dma_addr,
SMALL_BUF_MAP_SIZE,
PCI_DMA_FROMDEVICE);
sbq_desc->p.skb = NULL;
}
} else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DL) {
if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"Header in small, %d bytes in large. Chain large to small!\n",
length);
/*
* The data is in a single large buffer. We
* chain it to the header buffer's skb and let
* it rip.
*/
lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"Chaining page at offset = %d, for %d bytes to skb.\n",
lbq_desc->p.pg_chunk.offset, length);
skb_fill_page_desc(skb, 0, lbq_desc->p.pg_chunk.page,
lbq_desc->p.pg_chunk.offset, length);
skb->len += length;
skb->data_len += length;
skb->truesize += length;
} else {
/*
* The headers and data are in a single large buffer. We
* copy it to a new skb and let it go. This can happen with
* jumbo mtu on a non-TCP/UDP frame.
*/
lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
skb = netdev_alloc_skb(qdev->ndev, length);
if (!skb) {
netif_printk(qdev, probe, KERN_DEBUG, qdev->ndev,
"No skb available, drop the packet.\n");
return NULL;
}
pci_unmap_page(qdev->pdev, lbq_desc->dma_addr,
qdev->lbq_buf_size,
PCI_DMA_FROMDEVICE);
skb_reserve(skb, NET_IP_ALIGN);
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"%d bytes of headers and data in large. Chain page to new skb and pull tail.\n",
length);
skb_fill_page_desc(skb, 0, lbq_desc->p.pg_chunk.page,
lbq_desc->p.pg_chunk.offset,
length);
skb->len += length;
skb->data_len += length;
skb->truesize += length;
ql_update_mac_hdr_len(qdev, ib_mac_rsp,
lbq_desc->p.pg_chunk.va,
&hlen);
__pskb_pull_tail(skb, hlen);
}
} else {
/*
* The data is in a chain of large buffers
* pointed to by a small buffer. We loop
* thru and chain them to the our small header
* buffer's skb.
* frags: There are 18 max frags and our small
* buffer will hold 32 of them. The thing is,
* we'll use 3 max for our 9000 byte jumbo
* frames. If the MTU goes up we could
* eventually be in trouble.
*/
int size, i = 0;
sbq_desc = qlge_get_curr_buf(&rx_ring->sbq);
pci_unmap_single(qdev->pdev, sbq_desc->dma_addr,
SMALL_BUF_MAP_SIZE, PCI_DMA_FROMDEVICE);
if (!(ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS)) {
/*
* This is an non TCP/UDP IP frame, so
* the headers aren't split into a small
* buffer. We have to use the small buffer
* that contains our sg list as our skb to
* send upstairs. Copy the sg list here to
* a local buffer and use it to find the
* pages to chain.
*/
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"%d bytes of headers & data in chain of large.\n",
length);
skb = sbq_desc->p.skb;
sbq_desc->p.skb = NULL;
skb_reserve(skb, NET_IP_ALIGN);
}
do {
lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
size = min(length, qdev->lbq_buf_size);
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"Adding page %d to skb for %d bytes.\n",
i, size);
skb_fill_page_desc(skb, i,
lbq_desc->p.pg_chunk.page,
lbq_desc->p.pg_chunk.offset, size);
skb->len += size;
skb->data_len += size;
skb->truesize += size;
length -= size;
i++;
} while (length > 0);
ql_update_mac_hdr_len(qdev, ib_mac_rsp, lbq_desc->p.pg_chunk.va,
&hlen);
__pskb_pull_tail(skb, hlen);
}
return skb;
}
/* Process an inbound completion from an rx ring. */
static void ql_process_mac_split_rx_intr(struct ql_adapter *qdev,
struct rx_ring *rx_ring,
struct ib_mac_iocb_rsp *ib_mac_rsp,
u16 vlan_id)
{
struct net_device *ndev = qdev->ndev;
struct sk_buff *skb = NULL;
QL_DUMP_IB_MAC_RSP(ib_mac_rsp);
skb = ql_build_rx_skb(qdev, rx_ring, ib_mac_rsp);
if (unlikely(!skb)) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"No skb available, drop packet.\n");
rx_ring->rx_dropped++;
return;
}
/* Frame error, so drop the packet. */
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
ql_categorize_rx_err(qdev, ib_mac_rsp->flags2, rx_ring);
dev_kfree_skb_any(skb);
return;
}
/* The max framesize filter on this chip is set higher than
* MTU since FCoE uses 2k frames.
*/
if (skb->len > ndev->mtu + ETH_HLEN) {
dev_kfree_skb_any(skb);
rx_ring->rx_dropped++;
return;
}
/* loopback self test for ethtool */
if (test_bit(QL_SELFTEST, &qdev->flags)) {
ql_check_lb_frame(qdev, skb);
dev_kfree_skb_any(skb);
return;
}
prefetch(skb->data);
if (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev, "%s Multicast.\n",
(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
IB_MAC_IOCB_RSP_M_HASH ? "Hash" :
(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
IB_MAC_IOCB_RSP_M_REG ? "Registered" :
(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
IB_MAC_IOCB_RSP_M_PROM ? "Promiscuous" : "");
rx_ring->rx_multicast++;
}
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_P) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"Promiscuous Packet.\n");
}
skb->protocol = eth_type_trans(skb, ndev);
skb_checksum_none_assert(skb);
/* If rx checksum is on, and there are no
* csum or frame errors.
*/
if ((ndev->features & NETIF_F_RXCSUM) &&
!(ib_mac_rsp->flags1 & IB_MAC_CSUM_ERR_MASK)) {
/* TCP frame. */
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"TCP checksum done!\n");
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else if ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
(ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_V4)) {
/* Unfragmented ipv4 UDP frame. */
struct iphdr *iph = (struct iphdr *) skb->data;
if (!(iph->frag_off &
htons(IP_MF|IP_OFFSET))) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"TCP checksum done!\n");
}
}
}
rx_ring->rx_packets++;
rx_ring->rx_bytes += skb->len;
skb_record_rx_queue(skb, rx_ring->cq_id);
if (vlan_id != 0xffff)
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_id);
if (skb->ip_summed == CHECKSUM_UNNECESSARY)
napi_gro_receive(&rx_ring->napi, skb);
else
netif_receive_skb(skb);
}
/* Process an inbound completion from an rx ring. */
static unsigned long ql_process_mac_rx_intr(struct ql_adapter *qdev,
struct rx_ring *rx_ring,
struct ib_mac_iocb_rsp *ib_mac_rsp)
{
u32 length = le32_to_cpu(ib_mac_rsp->data_len);
u16 vlan_id = ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) &&
(qdev->ndev->features & NETIF_F_HW_VLAN_CTAG_RX)) ?
((le16_to_cpu(ib_mac_rsp->vlan_id) &
IB_MAC_IOCB_RSP_VLAN_MASK)) : 0xffff;
QL_DUMP_IB_MAC_RSP(ib_mac_rsp);
if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HV) {
/* The data and headers are split into
* separate buffers.
*/
ql_process_mac_split_rx_intr(qdev, rx_ring, ib_mac_rsp,
vlan_id);
} else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DS) {
/* The data fit in a single small buffer.
* Allocate a new skb, copy the data and
* return the buffer to the free pool.
*/
ql_process_mac_rx_skb(qdev, rx_ring, ib_mac_rsp, length,
vlan_id);
} else if ((ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DL) &&
!(ib_mac_rsp->flags1 & IB_MAC_CSUM_ERR_MASK) &&
(ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T)) {
/* TCP packet in a page chunk that's been checksummed.
* Tack it on to our GRO skb and let it go.
*/
ql_process_mac_rx_gro_page(qdev, rx_ring, ib_mac_rsp, length,
vlan_id);
} else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DL) {
/* Non-TCP packet in a page chunk. Allocate an
* skb, tack it on frags, and send it up.
*/
ql_process_mac_rx_page(qdev, rx_ring, ib_mac_rsp, length,
vlan_id);
} else {
/* Non-TCP/UDP large frames that span multiple buffers
* can be processed corrrectly by the split frame logic.
*/
ql_process_mac_split_rx_intr(qdev, rx_ring, ib_mac_rsp,
vlan_id);
}
return (unsigned long)length;
}
/* Process an outbound completion from an rx ring. */
static void ql_process_mac_tx_intr(struct ql_adapter *qdev,
struct ob_mac_iocb_rsp *mac_rsp)
{
struct tx_ring *tx_ring;
struct tx_ring_desc *tx_ring_desc;
QL_DUMP_OB_MAC_RSP(mac_rsp);
tx_ring = &qdev->tx_ring[mac_rsp->txq_idx];
tx_ring_desc = &tx_ring->q[mac_rsp->tid];
ql_unmap_send(qdev, tx_ring_desc, tx_ring_desc->map_cnt);
tx_ring->tx_bytes += (tx_ring_desc->skb)->len;
tx_ring->tx_packets++;
dev_kfree_skb(tx_ring_desc->skb);
tx_ring_desc->skb = NULL;
if (unlikely(mac_rsp->flags1 & (OB_MAC_IOCB_RSP_E |
OB_MAC_IOCB_RSP_S |
OB_MAC_IOCB_RSP_L |
OB_MAC_IOCB_RSP_P | OB_MAC_IOCB_RSP_B))) {
if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_E) {
netif_warn(qdev, tx_done, qdev->ndev,
"Total descriptor length did not match transfer length.\n");
}
if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_S) {
netif_warn(qdev, tx_done, qdev->ndev,
"Frame too short to be valid, not sent.\n");
}
if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_L) {
netif_warn(qdev, tx_done, qdev->ndev,
"Frame too long, but sent anyway.\n");
}
if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_B) {
netif_warn(qdev, tx_done, qdev->ndev,
"PCI backplane error. Frame not sent.\n");
}
}
atomic_inc(&tx_ring->tx_count);
}
/* Fire up a handler to reset the MPI processor. */
void ql_queue_fw_error(struct ql_adapter *qdev)
{
ql_link_off(qdev);
queue_delayed_work(qdev->workqueue, &qdev->mpi_reset_work, 0);
}
void ql_queue_asic_error(struct ql_adapter *qdev)
{
ql_link_off(qdev);
ql_disable_interrupts(qdev);
/* Clear adapter up bit to signal the recovery
* process that it shouldn't kill the reset worker
* thread
*/
clear_bit(QL_ADAPTER_UP, &qdev->flags);
/* Set asic recovery bit to indicate reset process that we are
* in fatal error recovery process rather than normal close
*/
set_bit(QL_ASIC_RECOVERY, &qdev->flags);
queue_delayed_work(qdev->workqueue, &qdev->asic_reset_work, 0);
}
static void ql_process_chip_ae_intr(struct ql_adapter *qdev,
struct ib_ae_iocb_rsp *ib_ae_rsp)
{
switch (ib_ae_rsp->event) {
case MGMT_ERR_EVENT:
netif_err(qdev, rx_err, qdev->ndev,
"Management Processor Fatal Error.\n");
ql_queue_fw_error(qdev);
return;
case CAM_LOOKUP_ERR_EVENT:
netdev_err(qdev->ndev, "Multiple CAM hits lookup occurred.\n");
netdev_err(qdev->ndev, "This event shouldn't occur.\n");
ql_queue_asic_error(qdev);
return;
case SOFT_ECC_ERROR_EVENT:
netdev_err(qdev->ndev, "Soft ECC error detected.\n");
ql_queue_asic_error(qdev);
break;
case PCI_ERR_ANON_BUF_RD:
netdev_err(qdev->ndev, "PCI error occurred when reading "
"anonymous buffers from rx_ring %d.\n",
ib_ae_rsp->q_id);
ql_queue_asic_error(qdev);
break;
default:
netif_err(qdev, drv, qdev->ndev, "Unexpected event %d.\n",
ib_ae_rsp->event);
ql_queue_asic_error(qdev);
break;
}
}
static int ql_clean_outbound_rx_ring(struct rx_ring *rx_ring)
{
struct ql_adapter *qdev = rx_ring->qdev;
u32 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
struct ob_mac_iocb_rsp *net_rsp = NULL;
int count = 0;
struct tx_ring *tx_ring;
/* While there are entries in the completion queue. */
while (prod != rx_ring->cnsmr_idx) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"cq_id = %d, prod = %d, cnsmr = %d\n",
rx_ring->cq_id, prod, rx_ring->cnsmr_idx);
net_rsp = (struct ob_mac_iocb_rsp *)rx_ring->curr_entry;
rmb();
switch (net_rsp->opcode) {
case OPCODE_OB_MAC_TSO_IOCB:
case OPCODE_OB_MAC_IOCB:
ql_process_mac_tx_intr(qdev, net_rsp);
break;
default:
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"Hit default case, not handled! dropping the packet, opcode = %x.\n",
net_rsp->opcode);
}
count++;
ql_update_cq(rx_ring);
prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
}
if (!net_rsp)
return 0;
ql_write_cq_idx(rx_ring);
tx_ring = &qdev->tx_ring[net_rsp->txq_idx];
if (__netif_subqueue_stopped(qdev->ndev, tx_ring->wq_id)) {
if ((atomic_read(&tx_ring->tx_count) > (tx_ring->wq_len / 4)))
/*
* The queue got stopped because the tx_ring was full.
* Wake it up, because it's now at least 25% empty.
*/
netif_wake_subqueue(qdev->ndev, tx_ring->wq_id);
}
return count;
}
static int ql_clean_inbound_rx_ring(struct rx_ring *rx_ring, int budget)
{
struct ql_adapter *qdev = rx_ring->qdev;
u32 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
struct ql_net_rsp_iocb *net_rsp;
int count = 0;
/* While there are entries in the completion queue. */
while (prod != rx_ring->cnsmr_idx) {
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"cq_id = %d, prod = %d, cnsmr = %d\n",
rx_ring->cq_id, prod, rx_ring->cnsmr_idx);
net_rsp = rx_ring->curr_entry;
rmb();
switch (net_rsp->opcode) {
case OPCODE_IB_MAC_IOCB:
ql_process_mac_rx_intr(qdev, rx_ring,
(struct ib_mac_iocb_rsp *)
net_rsp);
break;
case OPCODE_IB_AE_IOCB:
ql_process_chip_ae_intr(qdev, (struct ib_ae_iocb_rsp *)
net_rsp);
break;
default:
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"Hit default case, not handled! dropping the packet, opcode = %x.\n",
net_rsp->opcode);
break;
}
count++;
ql_update_cq(rx_ring);
prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
if (count == budget)
break;
}
ql_update_buffer_queues(rx_ring, GFP_ATOMIC, 0);
ql_write_cq_idx(rx_ring);
return count;
}
static int ql_napi_poll_msix(struct napi_struct *napi, int budget)
{
struct rx_ring *rx_ring = container_of(napi, struct rx_ring, napi);
struct ql_adapter *qdev = rx_ring->qdev;
struct rx_ring *trx_ring;
int i, work_done = 0;
struct intr_context *ctx = &qdev->intr_context[rx_ring->cq_id];
netif_printk(qdev, rx_status, KERN_DEBUG, qdev->ndev,
"Enter, NAPI POLL cq_id = %d.\n", rx_ring->cq_id);
/* Service the TX rings first. They start
* right after the RSS rings.
*/
for (i = qdev->rss_ring_count; i < qdev->rx_ring_count; i++) {
trx_ring = &qdev->rx_ring[i];
/* If this TX completion ring belongs to this vector and
* it's not empty then service it.
*/
if ((ctx->irq_mask & (1 << trx_ring->cq_id)) &&
(ql_read_sh_reg(trx_ring->prod_idx_sh_reg) !=
trx_ring->cnsmr_idx)) {
netif_printk(qdev, intr, KERN_DEBUG, qdev->ndev,
"%s: Servicing TX completion ring %d.\n",
__func__, trx_ring->cq_id);
ql_clean_outbound_rx_ring(trx_ring);
}
}
/*
* Now service the RSS ring if it's active.
*/
if (ql_read_sh_reg(rx_ring->prod_idx_sh_reg) !=
rx_ring->cnsmr_idx) {
netif_printk(qdev, intr, KERN_DEBUG, qdev->ndev,
"%s: Servicing RX completion ring %d.\n",
__func__, rx_ring->cq_id);
work_done = ql_clean_inbound_rx_ring(rx_ring, budget);
}
if (work_done < budget) {
napi_complete_done(napi, work_done);
ql_enable_completion_interrupt(qdev, rx_ring->irq);
}
return work_done;
}
static void qlge_vlan_mode(struct net_device *ndev, netdev_features_t features)
{
struct ql_adapter *qdev = netdev_priv(ndev);
if (features & NETIF_F_HW_VLAN_CTAG_RX) {
ql_write32(qdev, NIC_RCV_CFG, NIC_RCV_CFG_VLAN_MASK |
NIC_RCV_CFG_VLAN_MATCH_AND_NON);
} else {
ql_write32(qdev, NIC_RCV_CFG, NIC_RCV_CFG_VLAN_MASK);
}
}
/**
* qlge_update_hw_vlan_features - helper routine to reinitialize the adapter
* based on the features to enable/disable hardware vlan accel
*/
static int qlge_update_hw_vlan_features(struct net_device *ndev,
netdev_features_t features)
{
struct ql_adapter *qdev = netdev_priv(ndev);
int status = 0;
bool need_restart = netif_running(ndev);
if (need_restart) {
status = ql_adapter_down(qdev);
if (status) {
netif_err(qdev, link, qdev->ndev,
"Failed to bring down the adapter\n");
return status;
}
}
/* update the features with resent change */
ndev->features = features;
if (need_restart) {
status = ql_adapter_up(qdev);
if (status) {
netif_err(qdev, link, qdev->ndev,
"Failed to bring up the adapter\n");
return status;
}
}
return status;
}
static int qlge_set_features(struct net_device *ndev,
netdev_features_t features)
{
netdev_features_t changed = ndev->features ^ features;
int err;
if (changed & NETIF_F_HW_VLAN_CTAG_RX) {
/* Update the behavior of vlan accel in the adapter */
err = qlge_update_hw_vlan_features(ndev, features);
if (err)
return err;
qlge_vlan_mode(ndev, features);
}
return 0;
}
static int __qlge_vlan_rx_add_vid(struct ql_adapter *qdev, u16 vid)
{
u32 enable_bit = MAC_ADDR_E;
int err;
err = ql_set_mac_addr_reg(qdev, (u8 *) &enable_bit,
MAC_ADDR_TYPE_VLAN, vid);
if (err)
netif_err(qdev, ifup, qdev->ndev,
"Failed to init vlan address.\n");
return err;
}
static int qlge_vlan_rx_add_vid(struct net_device *ndev, __be16 proto, u16 vid)
{
struct ql_adapter *qdev = netdev_priv(ndev);
int status;
int err;
status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
if (status)
return status;
err = __qlge_vlan_rx_add_vid(qdev, vid);
set_bit(vid, qdev->active_vlans);
ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
return err;
}
static int __qlge_vlan_rx_kill_vid(struct ql_adapter *qdev, u16 vid)
{
u32 enable_bit = 0;
int err;
err = ql_set_mac_addr_reg(qdev, (u8 *) &enable_bit,
MAC_ADDR_TYPE_VLAN, vid);
if (err)
netif_err(qdev, ifup, qdev->ndev,
"Failed to clear vlan address.\n");
return err;
}
static int qlge_vlan_rx_kill_vid(struct net_device *ndev, __be16 proto, u16 vid)
{
struct ql_adapter *qdev = netdev_priv(ndev);
int status;
int err;
status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
if (status)
return status;
err = __qlge_vlan_rx_kill_vid(qdev, vid);
clear_bit(vid, qdev->active_vlans);
ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
return err;
}
static void qlge_restore_vlan(struct ql_adapter *qdev)
{
int status;
u16 vid;
status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
if (status)
return;
for_each_set_bit(vid, qdev->active_vlans, VLAN_N_VID)
__qlge_vlan_rx_add_vid(qdev, vid);
ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
}
/* MSI-X Multiple Vector Interrupt Handler for inbound completions. */
static irqreturn_t qlge_msix_rx_isr(int irq, void *dev_id)
{
struct rx_ring *rx_ring = dev_id;
napi_schedule(&rx_ring->napi);
return IRQ_HANDLED;
}
/* This handles a fatal error, MPI activity, and the default
* rx_ring in an MSI-X multiple vector environment.
* In MSI/Legacy environment it also process the rest of
* the rx_rings.
*/
static irqreturn_t qlge_isr(int irq, void *dev_id)
{
struct rx_ring *rx_ring = dev_id;
struct ql_adapter *qdev = rx_ring->qdev;
struct intr_context *intr_context = &qdev->intr_context[0];
u32 var;
int work_done = 0;
/* Experience shows that when using INTx interrupts, interrupts must
* be masked manually.
* When using MSI mode, INTR_EN_EN must be explicitly disabled
* (even though it is auto-masked), otherwise a later command to
* enable it is not effective.
*/
if (!test_bit(QL_MSIX_ENABLED, &qdev->flags))
ql_disable_completion_interrupt(qdev, 0);
var = ql_read32(qdev, STS);
/*
* Check for fatal error.
*/
if (var & STS_FE) {
ql_disable_completion_interrupt(qdev, 0);
ql_queue_asic_error(qdev);
netdev_err(qdev->ndev, "Got fatal error, STS = %x.\n", var);
var = ql_read32(qdev, ERR_STS);
netdev_err(qdev->ndev, "Resetting chip. "
"Error Status Register = 0x%x\n", var);
return IRQ_HANDLED;
}
/*
* Check MPI processor activity.
*/
if ((var & STS_PI) &&
(ql_read32(qdev, INTR_MASK) & INTR_MASK_PI)) {
/*
* We've got an async event or mailbox completion.
* Handle it and clear the source of the interrupt.
*/
netif_err(qdev, intr, qdev->ndev,
"Got MPI processor interrupt.\n");
ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
queue_delayed_work_on(smp_processor_id(),
qdev->workqueue, &qdev->mpi_work, 0);
work_done++;
}
/*
* Get the bit-mask that shows the active queues for this
* pass. Compare it to the queues that this irq services
* and call napi if there's a match.
*/
var = ql_read32(qdev, ISR1);
if (var & intr_context->irq_mask) {
netif_info(qdev, intr, qdev->ndev,
"Waking handler for rx_ring[0].\n");
napi_schedule(&rx_ring->napi);
work_done++;
} else {
/* Experience shows that the device sometimes signals an
* interrupt but no work is scheduled from this function.
* Nevertheless, the interrupt is auto-masked. Therefore, we
* systematically re-enable the interrupt if we didn't
* schedule napi.
*/
ql_enable_completion_interrupt(qdev, 0);
}
return work_done ? IRQ_HANDLED : IRQ_NONE;
}
static int ql_tso(struct sk_buff *skb, struct ob_mac_tso_iocb_req *mac_iocb_ptr)
{
if (skb_is_gso(skb)) {
int err;
__be16 l3_proto = vlan_get_protocol(skb);
err = skb_cow_head(skb, 0);
if (err < 0)
return err;
mac_iocb_ptr->opcode = OPCODE_OB_MAC_TSO_IOCB;
mac_iocb_ptr->flags3 |= OB_MAC_TSO_IOCB_IC;
mac_iocb_ptr->frame_len = cpu_to_le32((u32) skb->len);
mac_iocb_ptr->total_hdrs_len =
cpu_to_le16(skb_transport_offset(skb) + tcp_hdrlen(skb));
mac_iocb_ptr->net_trans_offset =
cpu_to_le16(skb_network_offset(skb) |
skb_transport_offset(skb)
<< OB_MAC_TRANSPORT_HDR_SHIFT);
mac_iocb_ptr->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_LSO;
if (likely(l3_proto == htons(ETH_P_IP))) {
struct iphdr *iph = ip_hdr(skb);
iph->check = 0;
mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP4;
tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
iph->daddr, 0,
IPPROTO_TCP,
0);
} else if (l3_proto == htons(ETH_P_IPV6)) {
mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP6;
tcp_hdr(skb)->check =
~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
&ipv6_hdr(skb)->daddr,
0, IPPROTO_TCP, 0);
}
return 1;
}
return 0;
}
static void ql_hw_csum_setup(struct sk_buff *skb,
struct ob_mac_tso_iocb_req *mac_iocb_ptr)
{
int len;
struct iphdr *iph = ip_hdr(skb);
__sum16 *check;
mac_iocb_ptr->opcode = OPCODE_OB_MAC_TSO_IOCB;
mac_iocb_ptr->frame_len = cpu_to_le32((u32) skb->len);
mac_iocb_ptr->net_trans_offset =
cpu_to_le16(skb_network_offset(skb) |
skb_transport_offset(skb) << OB_MAC_TRANSPORT_HDR_SHIFT);
mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP4;
len = (ntohs(iph->tot_len) - (iph->ihl << 2));
if (likely(iph->protocol == IPPROTO_TCP)) {
check = &(tcp_hdr(skb)->check);
mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_TC;
mac_iocb_ptr->total_hdrs_len =
cpu_to_le16(skb_transport_offset(skb) +
(tcp_hdr(skb)->doff << 2));
} else {
check = &(udp_hdr(skb)->check);
mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_UC;
mac_iocb_ptr->total_hdrs_len =
cpu_to_le16(skb_transport_offset(skb) +
sizeof(struct udphdr));
}
*check = ~csum_tcpudp_magic(iph->saddr,
iph->daddr, len, iph->protocol, 0);
}
static netdev_tx_t qlge_send(struct sk_buff *skb, struct net_device *ndev)
{
struct tx_ring_desc *tx_ring_desc;
struct ob_mac_iocb_req *mac_iocb_ptr;
struct ql_adapter *qdev = netdev_priv(ndev);
int tso;
struct tx_ring *tx_ring;
u32 tx_ring_idx = (u32) skb->queue_mapping;
tx_ring = &qdev->tx_ring[tx_ring_idx];
if (skb_padto(skb, ETH_ZLEN))
return NETDEV_TX_OK;
if (unlikely(atomic_read(&tx_ring->tx_count) < 2)) {
netif_info(qdev, tx_queued, qdev->ndev,
"%s: BUG! shutting down tx queue %d due to lack of resources.\n",
__func__, tx_ring_idx);
netif_stop_subqueue(ndev, tx_ring->wq_id);
tx_ring->tx_errors++;
return NETDEV_TX_BUSY;
}
tx_ring_desc = &tx_ring->q[tx_ring->prod_idx];
mac_iocb_ptr = tx_ring_desc->queue_entry;
memset((void *)mac_iocb_ptr, 0, sizeof(*mac_iocb_ptr));
mac_iocb_ptr->opcode = OPCODE_OB_MAC_IOCB;
mac_iocb_ptr->tid = tx_ring_desc->index;
/* We use the upper 32-bits to store the tx queue for this IO.
* When we get the completion we can use it to establish the context.
*/
mac_iocb_ptr->txq_idx = tx_ring_idx;
tx_ring_desc->skb = skb;
mac_iocb_ptr->frame_len = cpu_to_le16((u16) skb->len);
if (skb_vlan_tag_present(skb)) {
netif_printk(qdev, tx_queued, KERN_DEBUG, qdev->ndev,
"Adding a vlan tag %d.\n", skb_vlan_tag_get(skb));
mac_iocb_ptr->flags3 |= OB_MAC_IOCB_V;
mac_iocb_ptr->vlan_tci = cpu_to_le16(skb_vlan_tag_get(skb));
}
tso = ql_tso(skb, (struct ob_mac_tso_iocb_req *)mac_iocb_ptr);
if (tso < 0) {
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
} else if (unlikely(!tso) && (skb->ip_summed == CHECKSUM_PARTIAL)) {
ql_hw_csum_setup(skb,
(struct ob_mac_tso_iocb_req *)mac_iocb_ptr);
}
if (ql_map_send(qdev, mac_iocb_ptr, skb, tx_ring_desc) !=
NETDEV_TX_OK) {
netif_err(qdev, tx_queued, qdev->ndev,
"Could not map the segments.\n");
tx_ring->tx_errors++;
return NETDEV_TX_BUSY;
}
QL_DUMP_OB_MAC_IOCB(mac_iocb_ptr);
tx_ring->prod_idx++;
if (tx_ring->prod_idx == tx_ring->wq_len)
tx_ring->prod_idx = 0;
wmb();
ql_write_db_reg_relaxed(tx_ring->prod_idx, tx_ring->prod_idx_db_reg);
netif_printk(qdev, tx_queued, KERN_DEBUG, qdev->ndev,
"tx queued, slot %d, len %d\n",
tx_ring->prod_idx, skb->len);
atomic_dec(&tx_ring->tx_count);
if (unlikely(atomic_read(&tx_ring->tx_count) < 2)) {
netif_stop_subqueue(ndev, tx_ring->wq_id);
if ((atomic_read(&tx_ring->tx_count) > (tx_ring->wq_len / 4)))
/*
* The queue got stopped because the tx_ring was full.
* Wake it up, because it's now at least 25% empty.
*/
netif_wake_subqueue(qdev->ndev, tx_ring->wq_id);
}
return NETDEV_TX_OK;
}
static void ql_free_shadow_space(struct ql_adapter *qdev)
{
if (qdev->rx_ring_shadow_reg_area) {
pci_free_consistent(qdev->pdev,
PAGE_SIZE,
qdev->rx_ring_shadow_reg_area,
qdev->rx_ring_shadow_reg_dma);
qdev->rx_ring_shadow_reg_area = NULL;
}
if (qdev->tx_ring_shadow_reg_area) {
pci_free_consistent(qdev->pdev,
PAGE_SIZE,
qdev->tx_ring_shadow_reg_area,
qdev->tx_ring_shadow_reg_dma);
qdev->tx_ring_shadow_reg_area = NULL;
}
}
static int ql_alloc_shadow_space(struct ql_adapter *qdev)
{
qdev->rx_ring_shadow_reg_area =
pci_zalloc_consistent(qdev->pdev, PAGE_SIZE,
&qdev->rx_ring_shadow_reg_dma);
if (!qdev->rx_ring_shadow_reg_area) {
netif_err(qdev, ifup, qdev->ndev,
"Allocation of RX shadow space failed.\n");
return -ENOMEM;
}
qdev->tx_ring_shadow_reg_area =
pci_zalloc_consistent(qdev->pdev, PAGE_SIZE,
&qdev->tx_ring_shadow_reg_dma);
if (!qdev->tx_ring_shadow_reg_area) {
netif_err(qdev, ifup, qdev->ndev,
"Allocation of TX shadow space failed.\n");
goto err_wqp_sh_area;
}
return 0;
err_wqp_sh_area:
pci_free_consistent(qdev->pdev,
PAGE_SIZE,
qdev->rx_ring_shadow_reg_area,
qdev->rx_ring_shadow_reg_dma);
return -ENOMEM;
}
static void ql_init_tx_ring(struct ql_adapter *qdev, struct tx_ring *tx_ring)
{
struct tx_ring_desc *tx_ring_desc;
int i;
struct ob_mac_iocb_req *mac_iocb_ptr;
mac_iocb_ptr = tx_ring->wq_base;
tx_ring_desc = tx_ring->q;
for (i = 0; i < tx_ring->wq_len; i++) {
tx_ring_desc->index = i;
tx_ring_desc->skb = NULL;
tx_ring_desc->queue_entry = mac_iocb_ptr;
mac_iocb_ptr++;
tx_ring_desc++;
}
atomic_set(&tx_ring->tx_count, tx_ring->wq_len);
}
static void ql_free_tx_resources(struct ql_adapter *qdev,
struct tx_ring *tx_ring)
{
if (tx_ring->wq_base) {
pci_free_consistent(qdev->pdev, tx_ring->wq_size,
tx_ring->wq_base, tx_ring->wq_base_dma);
tx_ring->wq_base = NULL;
}
kfree(tx_ring->q);
tx_ring->q = NULL;
}
static int ql_alloc_tx_resources(struct ql_adapter *qdev,
struct tx_ring *tx_ring)
{
tx_ring->wq_base =
pci_alloc_consistent(qdev->pdev, tx_ring->wq_size,
&tx_ring->wq_base_dma);
if (!tx_ring->wq_base ||
tx_ring->wq_base_dma & WQ_ADDR_ALIGN)
goto pci_alloc_err;
tx_ring->q =
kmalloc_array(tx_ring->wq_len, sizeof(struct tx_ring_desc),
GFP_KERNEL);
if (!tx_ring->q)
goto err;
return 0;
err:
pci_free_consistent(qdev->pdev, tx_ring->wq_size,
tx_ring->wq_base, tx_ring->wq_base_dma);
tx_ring->wq_base = NULL;
pci_alloc_err:
netif_err(qdev, ifup, qdev->ndev, "tx_ring alloc failed.\n");
return -ENOMEM;
}
static void ql_free_lbq_buffers(struct ql_adapter *qdev,