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fa3ce355c1
linux/drivers/net/netxen/netxen_nic_main.c
Narender Kumar fa3ce355c1 netxen: bridged mode optimizations 
When the interface is put in bridged mode, destination mac
addresses are unknown to firmware. So packets take a slow
path (lower priority) in firmware reducing performance.

Firmware can cache limited number of remote unicast mac
addresses for certain interval, if "dynamic mac learning"
mode is enabled.

Driver needs to enable this "mac learning" mode in firmware.
Currently this is done through net device class sysfs entry,
possibly this can also be done upon netlink notifications to
from bridge.

Signed-off-by: Narender Kumar <narender.kumar@qlogic.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-26 15:29:21 -07:00

2201 lines
53 KiB
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/*
* Copyright (C) 2003 - 2009 NetXen, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.
*
* Contact Information:
* info@netxen.com
* NetXen Inc,
* 18922 Forge Drive
* Cupertino, CA 95014-0701
*
*/
#include <linux/vmalloc.h>
#include <linux/interrupt.h>
#include "netxen_nic_hw.h"
#include "netxen_nic.h"
#include <linux/dma-mapping.h>
#include <linux/if_vlan.h>
#include <net/ip.h>
#include <linux/ipv6.h>
#include <linux/inetdevice.h>
MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
char netxen_nic_driver_name[] = "netxen_nic";
static char netxen_nic_driver_string[] = "NetXen Network Driver version "
NETXEN_NIC_LINUX_VERSIONID;
static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
/* Default to restricted 1G auto-neg mode */
static int wol_port_mode = 5;
static int use_msi = 1;
static int use_msi_x = 1;
/* Local functions to NetXen NIC driver */
static int __devinit netxen_nic_probe(struct pci_dev *pdev,
const struct pci_device_id *ent);
static void __devexit netxen_nic_remove(struct pci_dev *pdev);
static int netxen_nic_open(struct net_device *netdev);
static int netxen_nic_close(struct net_device *netdev);
static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
static void netxen_tx_timeout(struct net_device *netdev);
static void netxen_reset_task(struct work_struct *work);
static void netxen_watchdog(unsigned long);
static int netxen_nic_poll(struct napi_struct *napi, int budget);
#ifdef CONFIG_NET_POLL_CONTROLLER
static void netxen_nic_poll_controller(struct net_device *netdev);
#endif
static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
static irqreturn_t netxen_intr(int irq, void *data);
static irqreturn_t netxen_msi_intr(int irq, void *data);
static irqreturn_t netxen_msix_intr(int irq, void *data);
/* PCI Device ID Table */
#define ENTRY(device) \
{PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
.class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
ENTRY(PCI_DEVICE_ID_NX3031),
{0,}
};
MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
static uint32_t crb_cmd_producer[4] = {
CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
};
void
netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
struct nx_host_tx_ring *tx_ring)
{
NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
netif_stop_queue(adapter->netdev);
smp_mb();
}
}
static uint32_t crb_cmd_consumer[4] = {
CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
};
static inline void
netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
struct nx_host_tx_ring *tx_ring)
{
NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
}
static uint32_t msi_tgt_status[8] = {
ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
};
static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
{
struct netxen_adapter *adapter = sds_ring->adapter;
NXWR32(adapter, sds_ring->crb_intr_mask, 0);
}
static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
{
struct netxen_adapter *adapter = sds_ring->adapter;
NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
if (!NETXEN_IS_MSI_FAMILY(adapter))
adapter->pci_write_immediate(adapter,
adapter->legacy_intr.tgt_mask_reg, 0xfbff);
}
static int
netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
{
int size = sizeof(struct nx_host_sds_ring) * count;
recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
return (recv_ctx->sds_rings == NULL);
}
static void
netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
{
if (recv_ctx->sds_rings != NULL)
kfree(recv_ctx->sds_rings);
recv_ctx->sds_rings = NULL;
}
static int
netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
{
int ring;
struct nx_host_sds_ring *sds_ring;
struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
return -ENOMEM;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
netif_napi_add(netdev, &sds_ring->napi,
netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
}
return 0;
}
static void
netxen_napi_del(struct netxen_adapter *adapter)
{
int ring;
struct nx_host_sds_ring *sds_ring;
struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
netif_napi_del(&sds_ring->napi);
}
netxen_free_sds_rings(&adapter->recv_ctx);
}
static void
netxen_napi_enable(struct netxen_adapter *adapter)
{
int ring;
struct nx_host_sds_ring *sds_ring;
struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
napi_enable(&sds_ring->napi);
netxen_nic_enable_int(sds_ring);
}
}
static void
netxen_napi_disable(struct netxen_adapter *adapter)
{
int ring;
struct nx_host_sds_ring *sds_ring;
struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
netxen_nic_disable_int(sds_ring);
napi_synchronize(&sds_ring->napi);
napi_disable(&sds_ring->napi);
}
}
static int nx_set_dma_mask(struct netxen_adapter *adapter)
{
struct pci_dev *pdev = adapter->pdev;
uint64_t mask, cmask;
adapter->pci_using_dac = 0;
mask = DMA_BIT_MASK(32);
cmask = DMA_BIT_MASK(32);
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
#ifndef CONFIG_IA64
mask = DMA_BIT_MASK(35);
#endif
} else {
mask = DMA_BIT_MASK(39);
cmask = mask;
}
if (pci_set_dma_mask(pdev, mask) == 0 &&
pci_set_consistent_dma_mask(pdev, cmask) == 0) {
adapter->pci_using_dac = 1;
return 0;
}
return -EIO;
}
/* Update addressable range if firmware supports it */
static int
nx_update_dma_mask(struct netxen_adapter *adapter)
{
int change, shift, err;
uint64_t mask, old_mask, old_cmask;
struct pci_dev *pdev = adapter->pdev;
change = 0;
shift = NXRD32(adapter, CRB_DMA_SHIFT);
if (shift > 32)
return 0;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
change = 1;
else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
change = 1;
if (change) {
old_mask = pdev->dma_mask;
old_cmask = pdev->dev.coherent_dma_mask;
mask = DMA_BIT_MASK(32+shift);
err = pci_set_dma_mask(pdev, mask);
if (err)
goto err_out;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
err = pci_set_consistent_dma_mask(pdev, mask);
if (err)
goto err_out;
}
dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
}
return 0;
err_out:
pci_set_dma_mask(pdev, old_mask);
pci_set_consistent_dma_mask(pdev, old_cmask);
return err;
}
static void
netxen_check_options(struct netxen_adapter *adapter)
{
if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
} else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
}
adapter->msix_supported = 0;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
adapter->msix_supported = !!use_msi_x;
adapter->rss_supported = !!use_msi_x;
} else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
switch (adapter->ahw.board_type) {
case NETXEN_BRDTYPE_P2_SB31_10G:
case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
adapter->msix_supported = !!use_msi_x;
adapter->rss_supported = !!use_msi_x;
break;
default:
break;
}
}
adapter->num_txd = MAX_CMD_DESCRIPTORS;
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
adapter->max_rds_rings = 3;
} else {
adapter->num_lro_rxd = 0;
adapter->max_rds_rings = 2;
}
}
static int
netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
{
u32 val, timeout;
if (first_boot == 0x55555555) {
/* This is the first boot after power up */
NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
return 0;
/* PCI bus master workaround */
first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
if (!(first_boot & 0x4)) {
first_boot |= 0x4;
NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
}
/* This is the first boot after power up */
first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
if (first_boot != 0x80000f) {
/* clear the register for future unloads/loads */
NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
return -EIO;
}
/* Start P2 boot loader */
val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
timeout = 0;
do {
msleep(1);
val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
if (++timeout > 5000)
return -EIO;
} while (val == NETXEN_BDINFO_MAGIC);
}
return 0;
}
static void netxen_set_port_mode(struct netxen_adapter *adapter)
{
u32 val, data;
val = adapter->ahw.board_type;
if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
(val == NETXEN_BRDTYPE_P3_XG_LOM)) {
if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
data = NETXEN_PORT_MODE_802_3_AP;
NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
} else if (port_mode == NETXEN_PORT_MODE_XG) {
data = NETXEN_PORT_MODE_XG;
NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
} else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
data = NETXEN_PORT_MODE_AUTO_NEG_1G;
NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
} else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
data = NETXEN_PORT_MODE_AUTO_NEG_XG;
NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
} else {
data = NETXEN_PORT_MODE_AUTO_NEG;
NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
}
if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
(wol_port_mode != NETXEN_PORT_MODE_XG) &&
(wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
(wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
}
NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
}
}
static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
{
u32 control;
int pos;
pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
if (pos) {
pci_read_config_dword(pdev, pos, &control);
if (enable)
control |= PCI_MSIX_FLAGS_ENABLE;
else
control = 0;
pci_write_config_dword(pdev, pos, control);
}
}
static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
{
int i;
for (i = 0; i < count; i++)
adapter->msix_entries[i].entry = i;
}
static int
netxen_read_mac_addr(struct netxen_adapter *adapter)
{
int i;
unsigned char *p;
__le64 mac_addr;
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
return -EIO;
} else {
if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
return -EIO;
}
p = (unsigned char *)&mac_addr;
for (i = 0; i < 6; i++)
netdev->dev_addr[i] = *(p + 5 - i);
memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
/* set station address */
if (!is_valid_ether_addr(netdev->perm_addr))
dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
return 0;
}
int netxen_nic_set_mac(struct net_device *netdev, void *p)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
struct sockaddr *addr = p;
if (!is_valid_ether_addr(addr->sa_data))
return -EINVAL;
if (netif_running(netdev)) {
netif_device_detach(netdev);
netxen_napi_disable(adapter);
}
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
adapter->macaddr_set(adapter, addr->sa_data);
if (netif_running(netdev)) {
netif_device_attach(netdev);
netxen_napi_enable(adapter);
}
return 0;
}
static void netxen_set_multicast_list(struct net_device *dev)
{
struct netxen_adapter *adapter = netdev_priv(dev);
adapter->set_multi(dev);
}
static const struct net_device_ops netxen_netdev_ops = {
.ndo_open = netxen_nic_open,
.ndo_stop = netxen_nic_close,
.ndo_start_xmit = netxen_nic_xmit_frame,
.ndo_get_stats = netxen_nic_get_stats,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_multicast_list = netxen_set_multicast_list,
.ndo_set_mac_address = netxen_nic_set_mac,
.ndo_change_mtu = netxen_nic_change_mtu,
.ndo_tx_timeout = netxen_tx_timeout,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = netxen_nic_poll_controller,
#endif
};
static void
netxen_setup_intr(struct netxen_adapter *adapter)
{
struct netxen_legacy_intr_set *legacy_intrp;
struct pci_dev *pdev = adapter->pdev;
int err, num_msix;
if (adapter->rss_supported) {
num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
MSIX_ENTRIES_PER_ADAPTER : 2;
} else
num_msix = 1;
adapter->max_sds_rings = 1;
adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
if (adapter->ahw.revision_id >= NX_P3_B0)
legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
else
legacy_intrp = &legacy_intr[0];
adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
netxen_set_msix_bit(pdev, 0);
if (adapter->msix_supported) {
netxen_init_msix_entries(adapter, num_msix);
err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
if (err == 0) {
adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
netxen_set_msix_bit(pdev, 1);
if (adapter->rss_supported)
adapter->max_sds_rings = num_msix;
dev_info(&pdev->dev, "using msi-x interrupts\n");
return;
}
if (err > 0)
pci_disable_msix(pdev);
/* fall through for msi */
}
if (use_msi && !pci_enable_msi(pdev)) {
adapter->flags |= NETXEN_NIC_MSI_ENABLED;
adapter->msi_tgt_status =
msi_tgt_status[adapter->ahw.pci_func];
dev_info(&pdev->dev, "using msi interrupts\n");
adapter->msix_entries[0].vector = pdev->irq;
return;
}
dev_info(&pdev->dev, "using legacy interrupts\n");
adapter->msix_entries[0].vector = pdev->irq;
}
static void
netxen_teardown_intr(struct netxen_adapter *adapter)
{
if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
pci_disable_msix(adapter->pdev);
if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
pci_disable_msi(adapter->pdev);
}
static void
netxen_cleanup_pci_map(struct netxen_adapter *adapter)
{
if (adapter->ahw.db_base != NULL)
iounmap(adapter->ahw.db_base);
if (adapter->ahw.pci_base0 != NULL)
iounmap(adapter->ahw.pci_base0);
if (adapter->ahw.pci_base1 != NULL)
iounmap(adapter->ahw.pci_base1);
if (adapter->ahw.pci_base2 != NULL)
iounmap(adapter->ahw.pci_base2);
}
static int
netxen_setup_pci_map(struct netxen_adapter *adapter)
{
void __iomem *mem_ptr0 = NULL;
void __iomem *mem_ptr1 = NULL;
void __iomem *mem_ptr2 = NULL;
void __iomem *db_ptr = NULL;
unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
struct pci_dev *pdev = adapter->pdev;
int pci_func = adapter->ahw.pci_func;
int err = 0;
/*
* Set the CRB window to invalid. If any register in window 0 is
* accessed it should set the window to 0 and then reset it to 1.
*/
adapter->curr_window = 255;
adapter->ahw.qdr_sn_window = -1;
adapter->ahw.ddr_mn_window = -1;
/* remap phys address */
mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
mem_len = pci_resource_len(pdev, 0);
pci_len0 = 0;
adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
adapter->pci_set_window = netxen_nic_pci_set_window_128M;
adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
/* 128 Meg of memory */
if (mem_len == NETXEN_PCI_128MB_SIZE) {
mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
SECOND_PAGE_GROUP_SIZE);
mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
THIRD_PAGE_GROUP_SIZE);
} else if (mem_len == NETXEN_PCI_32MB_SIZE) {
mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
} else if (mem_len == NETXEN_PCI_2MB_SIZE) {
adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
adapter->pci_write_immediate =
netxen_nic_pci_write_immediate_2M;
adapter->pci_set_window = netxen_nic_pci_set_window_2M;
adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
mem_ptr0 = pci_ioremap_bar(pdev, 0);
if (mem_ptr0 == NULL) {
dev_err(&pdev->dev, "failed to map PCI bar 0\n");
return -EIO;
}
pci_len0 = mem_len;
adapter->ahw.ddr_mn_window = 0;
adapter->ahw.qdr_sn_window = 0;
adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
(pci_func * 0x20);
adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
if (pci_func < 4)
adapter->ahw.ms_win_crb += (pci_func * 0x20);
else
adapter->ahw.ms_win_crb +=
0xA0 + ((pci_func - 4) * 0x10);
} else {
return -EIO;
}
dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
adapter->ahw.pci_base0 = mem_ptr0;
adapter->ahw.pci_len0 = pci_len0;
adapter->ahw.pci_base1 = mem_ptr1;
adapter->ahw.pci_base2 = mem_ptr2;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
goto skip_doorbell;
db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
db_len = pci_resource_len(pdev, 4);
if (db_len == 0) {
printk(KERN_ERR "%s: doorbell is disabled\n",
netxen_nic_driver_name);
err = -EIO;
goto err_out;
}
db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
if (!db_ptr) {
printk(KERN_ERR "%s: Failed to allocate doorbell map.",
netxen_nic_driver_name);
err = -EIO;
goto err_out;
}
skip_doorbell:
adapter->ahw.db_base = db_ptr;
adapter->ahw.db_len = db_len;
return 0;
err_out:
netxen_cleanup_pci_map(adapter);
return err;
}
static int
netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
{
int val, err, first_boot;
struct pci_dev *pdev = adapter->pdev;
int first_driver = 0;
if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
first_driver = (adapter->portnum == 0);
else
first_driver = (adapter->ahw.pci_func == 0);
if (!first_driver)
goto wait_init;
first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
err = netxen_check_hw_init(adapter, first_boot);
if (err) {
dev_err(&pdev->dev, "error in init HW init sequence\n");
return err;
}
if (request_fw)
netxen_request_firmware(adapter);
err = netxen_need_fw_reset(adapter);
if (err < 0)
return err;
if (err == 0)
goto wait_init;
if (first_boot != 0x55555555) {
NXWR32(adapter, CRB_CMDPEG_STATE, 0);
netxen_pinit_from_rom(adapter, 0);
msleep(1);
}
NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
netxen_set_port_mode(adapter);
netxen_load_firmware(adapter);
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
/* Initialize multicast addr pool owners */
val = 0x7654;
if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
val |= 0x0f000000;
NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
}
err = netxen_init_dummy_dma(adapter);
if (err)
return err;
/*
* Tell the hardware our version number.
*/
val = (_NETXEN_NIC_LINUX_MAJOR << 16)
| ((_NETXEN_NIC_LINUX_MINOR << 8))
| (_NETXEN_NIC_LINUX_SUBVERSION);
NXWR32(adapter, CRB_DRIVER_VERSION, val);
wait_init:
/* Handshake with the card before we register the devices. */
err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
if (err) {
netxen_free_dummy_dma(adapter);
return err;
}
nx_update_dma_mask(adapter);
netxen_nic_get_firmware_info(adapter);
return 0;
}
static int
netxen_nic_request_irq(struct netxen_adapter *adapter)
{
irq_handler_t handler;
struct nx_host_sds_ring *sds_ring;
int err, ring;
unsigned long flags = IRQF_SAMPLE_RANDOM;
struct net_device *netdev = adapter->netdev;
struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
handler = netxen_msix_intr;
else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
handler = netxen_msi_intr;
else {
flags |= IRQF_SHARED;
handler = netxen_intr;
}
adapter->irq = netdev->irq;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
err = request_irq(sds_ring->irq, handler,
flags, sds_ring->name, sds_ring);
if (err)
return err;
}
return 0;
}
static void
netxen_nic_free_irq(struct netxen_adapter *adapter)
{
int ring;
struct nx_host_sds_ring *sds_ring;
struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
free_irq(sds_ring->irq, sds_ring);
}
}
static void
netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
{
adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
adapter->coal.normal.data.rx_time_us =
NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
adapter->coal.normal.data.rx_packets =
NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
adapter->coal.normal.data.tx_time_us =
NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
adapter->coal.normal.data.tx_packets =
NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
}
static int
netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
{
int err;
err = adapter->init_port(adapter, adapter->physical_port);
if (err) {
printk(KERN_ERR "%s: Failed to initialize port %d\n",
netxen_nic_driver_name, adapter->portnum);
return err;
}
if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
adapter->macaddr_set(adapter, netdev->dev_addr);
adapter->set_multi(netdev);
adapter->set_mtu(adapter, netdev->mtu);
adapter->ahw.linkup = 0;
if (adapter->max_sds_rings > 1)
netxen_config_rss(adapter, 1);
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
netxen_config_intr_coalesce(adapter);
if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
netxen_napi_enable(adapter);
if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
netxen_linkevent_request(adapter, 1);
else
netxen_nic_set_link_parameters(adapter);
mod_timer(&adapter->watchdog_timer, jiffies);
return 0;
}
static void
netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
{
spin_lock(&adapter->tx_clean_lock);
netif_carrier_off(netdev);
netif_tx_disable(netdev);
if (adapter->stop_port)
adapter->stop_port(adapter);
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
netxen_p3_free_mac_list(adapter);
adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
netxen_napi_disable(adapter);
netxen_release_tx_buffers(adapter);
spin_unlock(&adapter->tx_clean_lock);
del_timer_sync(&adapter->watchdog_timer);
}
static int
netxen_nic_attach(struct netxen_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
int err, ring;
struct nx_host_rds_ring *rds_ring;
struct nx_host_tx_ring *tx_ring;
if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
return 0;
err = netxen_init_firmware(adapter);
if (err)
return err;
err = netxen_napi_add(adapter, netdev);
if (err)
return err;
err = netxen_alloc_sw_resources(adapter);
if (err) {
printk(KERN_ERR "%s: Error in setting sw resources\n",
netdev->name);
return err;
}
netxen_nic_clear_stats(adapter);
err = netxen_alloc_hw_resources(adapter);
if (err) {
printk(KERN_ERR "%s: Error in setting hw resources\n",
netdev->name);
goto err_out_free_sw;
}
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
tx_ring = adapter->tx_ring;
tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
tx_ring->producer = 0;
tx_ring->sw_consumer = 0;
netxen_nic_update_cmd_producer(adapter, tx_ring);
netxen_nic_update_cmd_consumer(adapter, tx_ring);
}
for (ring = 0; ring < adapter->max_rds_rings; ring++) {
rds_ring = &adapter->recv_ctx.rds_rings[ring];
netxen_post_rx_buffers(adapter, ring, rds_ring);
}
err = netxen_nic_request_irq(adapter);
if (err) {
dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
netdev->name);
goto err_out_free_rxbuf;
}
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
netxen_nic_init_coalesce_defaults(adapter);
netxen_create_sysfs_entries(adapter);
adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
return 0;
err_out_free_rxbuf:
netxen_release_rx_buffers(adapter);
netxen_free_hw_resources(adapter);
err_out_free_sw:
netxen_free_sw_resources(adapter);
return err;
}
static void
netxen_nic_detach(struct netxen_adapter *adapter)
{
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
return;
netxen_remove_sysfs_entries(adapter);
netxen_free_hw_resources(adapter);
netxen_release_rx_buffers(adapter);
netxen_nic_free_irq(adapter);
netxen_napi_del(adapter);
netxen_free_sw_resources(adapter);
adapter->is_up = 0;
}
int
netxen_nic_reset_context(struct netxen_adapter *adapter)
{
int err = 0;
struct net_device *netdev = adapter->netdev;
if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
if (netif_running(netdev))
netxen_nic_down(adapter, netdev);
netxen_nic_detach(adapter);
err = netxen_nic_attach(adapter);
if (err)
goto done;
if (netif_running(netdev))
err = netxen_nic_up(adapter, netdev);
}
done:
return err;
}
static int
netxen_setup_netdev(struct netxen_adapter *adapter,
struct net_device *netdev)
{
int err = 0;
struct pci_dev *pdev = adapter->pdev;
adapter->rx_csum = 1;
adapter->mc_enabled = 0;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
adapter->max_mc_count = 38;
else
adapter->max_mc_count = 16;
netdev->netdev_ops = &netxen_netdev_ops;
netdev->watchdog_timeo = 2*HZ;
netxen_nic_change_mtu(netdev, netdev->mtu);
SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
netdev->features |= (NETIF_F_GRO);
netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
}
if (adapter->pci_using_dac) {
netdev->features |= NETIF_F_HIGHDMA;
netdev->vlan_features |= NETIF_F_HIGHDMA;
}
if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
netdev->features |= (NETIF_F_HW_VLAN_TX);
if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
netdev->features |= NETIF_F_LRO;
netdev->irq = adapter->msix_entries[0].vector;
err = netxen_napi_add(adapter, netdev);
if (err)
return err;
init_timer(&adapter->watchdog_timer);
adapter->watchdog_timer.function = &netxen_watchdog;
adapter->watchdog_timer.data = (unsigned long)adapter;
INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
INIT_WORK(&adapter->tx_timeout_task, netxen_reset_task);
if (netxen_read_mac_addr(adapter))
dev_warn(&pdev->dev, "failed to read mac addr\n");
netif_carrier_off(netdev);
netif_stop_queue(netdev);
err = register_netdev(netdev);
if (err) {
dev_err(&pdev->dev, "failed to register net device\n");
return err;
}
return 0;
}
static int __devinit
netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct net_device *netdev = NULL;
struct netxen_adapter *adapter = NULL;
int i = 0, err;
int pci_func_id = PCI_FUNC(pdev->devfn);
uint8_t revision_id;
if (pdev->class != 0x020000) {
printk(KERN_DEBUG "NetXen function %d, class %x will not "
"be enabled.\n",pci_func_id, pdev->class);
return -ENODEV;
}
if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
"will not be enabled.\n",
NX_P3_A0, NX_P3_B1);
return -ENODEV;
}
if ((err = pci_enable_device(pdev)))
return err;
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
err = -ENODEV;
goto err_out_disable_pdev;
}
if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
goto err_out_disable_pdev;
pci_set_master(pdev);
netdev = alloc_etherdev(sizeof(struct netxen_adapter));
if(!netdev) {
dev_err(&pdev->dev, "failed to allocate net_device\n");
err = -ENOMEM;
goto err_out_free_res;
}
SET_NETDEV_DEV(netdev, &pdev->dev);
adapter = netdev_priv(netdev);
adapter->netdev = netdev;
adapter->pdev = pdev;
adapter->ahw.pci_func = pci_func_id;
revision_id = pdev->revision;
adapter->ahw.revision_id = revision_id;
err = nx_set_dma_mask(adapter);
if (err)
goto err_out_free_netdev;
rwlock_init(&adapter->adapter_lock);
spin_lock_init(&adapter->tx_clean_lock);
INIT_LIST_HEAD(&adapter->mac_list);
err = netxen_setup_pci_map(adapter);
if (err)
goto err_out_free_netdev;
/* This will be reset for mezz cards */
adapter->portnum = pci_func_id;
err = netxen_nic_get_board_info(adapter);
if (err) {
dev_err(&pdev->dev, "Error getting board config info.\n");
goto err_out_iounmap;
}
netxen_initialize_adapter_ops(adapter);
/* Mezz cards have PCI function 0,2,3 enabled */
switch (adapter->ahw.board_type) {
case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
if (pci_func_id >= 2)
adapter->portnum = pci_func_id - 2;
break;
default:
break;
}
err = netxen_start_firmware(adapter, 1);
if (err)
goto err_out_iounmap;
/*
* See if the firmware gave us a virtual-physical port mapping.
*/
adapter->physical_port = adapter->portnum;
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
i = NXRD32(adapter, CRB_V2P(adapter->portnum));
if (i != 0x55555555)
adapter->physical_port = i;
}
netxen_check_options(adapter);
netxen_setup_intr(adapter);
err = netxen_setup_netdev(adapter, netdev);
if (err)
goto err_out_disable_msi;
pci_set_drvdata(pdev, adapter);
switch (adapter->ahw.port_type) {
case NETXEN_NIC_GBE:
dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
adapter->netdev->name);
break;
case NETXEN_NIC_XGBE:
dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
adapter->netdev->name);
break;
}
return 0;
err_out_disable_msi:
netxen_teardown_intr(adapter);
netxen_free_dummy_dma(adapter);
err_out_iounmap:
netxen_cleanup_pci_map(adapter);
err_out_free_netdev:
free_netdev(netdev);
err_out_free_res:
pci_release_regions(pdev);
err_out_disable_pdev:
pci_set_drvdata(pdev, NULL);
pci_disable_device(pdev);
return err;
}
static void __devexit netxen_nic_remove(struct pci_dev *pdev)
{
struct netxen_adapter *adapter;
struct net_device *netdev;
adapter = pci_get_drvdata(pdev);
if (adapter == NULL)
return;
netdev = adapter->netdev;
unregister_netdev(netdev);
cancel_work_sync(&adapter->watchdog_task);
cancel_work_sync(&adapter->tx_timeout_task);
netxen_nic_detach(adapter);
if (adapter->portnum == 0)
netxen_free_dummy_dma(adapter);
netxen_teardown_intr(adapter);
netxen_cleanup_pci_map(adapter);
netxen_release_firmware(adapter);
pci_release_regions(pdev);
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
free_netdev(netdev);
}
static int __netxen_nic_shutdown(struct pci_dev *pdev)
{
struct netxen_adapter *adapter = pci_get_drvdata(pdev);
struct net_device *netdev = adapter->netdev;
int retval;
netif_device_detach(netdev);
if (netif_running(netdev))
netxen_nic_down(adapter, netdev);
cancel_work_sync(&adapter->watchdog_task);
cancel_work_sync(&adapter->tx_timeout_task);
netxen_nic_detach(adapter);
if (adapter->portnum == 0)
netxen_free_dummy_dma(adapter);
retval = pci_save_state(pdev);
if (retval)
return retval;
if (netxen_nic_wol_supported(adapter)) {
pci_enable_wake(pdev, PCI_D3cold, 1);
pci_enable_wake(pdev, PCI_D3hot, 1);
}
pci_disable_device(pdev);
return 0;
}
static void netxen_nic_shutdown(struct pci_dev *pdev)
{
if (__netxen_nic_shutdown(pdev))
return;
}
#ifdef CONFIG_PM
static int
netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
{
int retval;
retval = __netxen_nic_shutdown(pdev);
if (retval)
return retval;
pci_set_power_state(pdev, pci_choose_state(pdev, state));
return 0;
}
static int
netxen_nic_resume(struct pci_dev *pdev)
{
struct netxen_adapter *adapter = pci_get_drvdata(pdev);
struct net_device *netdev = adapter->netdev;
int err;
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
err = pci_enable_device(pdev);
if (err)
return err;
adapter->curr_window = 255;
err = netxen_start_firmware(adapter, 0);
if (err) {
dev_err(&pdev->dev, "failed to start firmware\n");
return err;
}
if (netif_running(netdev)) {
err = netxen_nic_attach(adapter);
if (err)
return err;
err = netxen_nic_up(adapter, netdev);
if (err)
return err;
netif_device_attach(netdev);
}
return 0;
}
#endif
static int netxen_nic_open(struct net_device *netdev)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
int err = 0;
if (adapter->driver_mismatch)
return -EIO;
err = netxen_nic_attach(adapter);
if (err)
return err;
err = netxen_nic_up(adapter, netdev);
if (err)
goto err_out;
netif_start_queue(netdev);
return 0;
err_out:
netxen_nic_detach(adapter);
return err;
}
/*
* netxen_nic_close - Disables a network interface entry point
*/
static int netxen_nic_close(struct net_device *netdev)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
netxen_nic_down(adapter, netdev);
return 0;
}
static void
netxen_tso_check(struct net_device *netdev,
struct nx_host_tx_ring *tx_ring,
struct cmd_desc_type0 *first_desc,
struct sk_buff *skb)
{
u8 opcode = TX_ETHER_PKT;
__be16 protocol = skb->protocol;
u16 flags = 0, vid = 0;
u32 producer;
int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
struct cmd_desc_type0 *hwdesc;
struct vlan_ethhdr *vh;
if (protocol == cpu_to_be16(ETH_P_8021Q)) {
vh = (struct vlan_ethhdr *)skb->data;
protocol = vh->h_vlan_encapsulated_proto;
flags = FLAGS_VLAN_TAGGED;
} else if (vlan_tx_tag_present(skb)) {
flags = FLAGS_VLAN_OOB;
vid = vlan_tx_tag_get(skb);
netxen_set_tx_vlan_tci(first_desc, vid);
vlan_oob = 1;
}
if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
skb_shinfo(skb)->gso_size > 0) {
hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
first_desc->total_hdr_length = hdr_len;
if (vlan_oob) {
first_desc->total_hdr_length += VLAN_HLEN;
first_desc->tcp_hdr_offset = VLAN_HLEN;
first_desc->ip_hdr_offset = VLAN_HLEN;
/* Only in case of TSO on vlan device */
flags |= FLAGS_VLAN_TAGGED;
}
opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
TX_TCP_LSO6 : TX_TCP_LSO;
tso = 1;
} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
u8 l4proto;
if (protocol == cpu_to_be16(ETH_P_IP)) {
l4proto = ip_hdr(skb)->protocol;
if (l4proto == IPPROTO_TCP)
opcode = TX_TCP_PKT;
else if(l4proto == IPPROTO_UDP)
opcode = TX_UDP_PKT;
} else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
l4proto = ipv6_hdr(skb)->nexthdr;
if (l4proto == IPPROTO_TCP)
opcode = TX_TCPV6_PKT;
else if(l4proto == IPPROTO_UDP)
opcode = TX_UDPV6_PKT;
}
}
first_desc->tcp_hdr_offset += skb_transport_offset(skb);
first_desc->ip_hdr_offset += skb_network_offset(skb);
netxen_set_tx_flags_opcode(first_desc, flags, opcode);
if (!tso)
return;
/* For LSO, we need to copy the MAC/IP/TCP headers into
* the descriptor ring
*/
producer = tx_ring->producer;
copied = 0;
offset = 2;
if (vlan_oob) {
/* Create a TSO vlan header template for firmware */
hwdesc = &tx_ring->desc_head[producer];
tx_ring->cmd_buf_arr[producer].skb = NULL;
copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
hdr_len + VLAN_HLEN);
vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
skb_copy_from_linear_data(skb, vh, 12);
vh->h_vlan_proto = htons(ETH_P_8021Q);
vh->h_vlan_TCI = htons(vid);
skb_copy_from_linear_data_offset(skb, 12,
(char *)vh + 16, copy_len - 16);
copied = copy_len - VLAN_HLEN;
offset = 0;
producer = get_next_index(producer, tx_ring->num_desc);
}
while (copied < hdr_len) {
copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
(hdr_len - copied));
hwdesc = &tx_ring->desc_head[producer];
tx_ring->cmd_buf_arr[producer].skb = NULL;
skb_copy_from_linear_data_offset(skb, copied,
(char *)hwdesc + offset, copy_len);
copied += copy_len;
offset = 0;
producer = get_next_index(producer, tx_ring->num_desc);
}
tx_ring->producer = producer;
barrier();
}
static int
netxen_map_tx_skb(struct pci_dev *pdev,
struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
{
struct netxen_skb_frag *nf;
struct skb_frag_struct *frag;
int i, nr_frags;
dma_addr_t map;
nr_frags = skb_shinfo(skb)->nr_frags;
nf = &pbuf->frag_array[0];
map = pci_map_single(pdev, skb->data,
skb_headlen(skb), PCI_DMA_TODEVICE);
if (pci_dma_mapping_error(pdev, map))
goto out_err;
nf->dma = map;
nf->length = skb_headlen(skb);
for (i = 0; i < nr_frags; i++) {
frag = &skb_shinfo(skb)->frags[i];
nf = &pbuf->frag_array[i+1];
map = pci_map_page(pdev, frag->page, frag->page_offset,
frag->size, PCI_DMA_TODEVICE);
if (pci_dma_mapping_error(pdev, map))
goto unwind;
nf->dma = map;
nf->length = frag->size;
}
return 0;
unwind:
while (i > 0) {
nf = &pbuf->frag_array[i];
pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
}
nf = &pbuf->frag_array[0];
pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
out_err:
return -ENOMEM;
}
static inline void
netxen_clear_cmddesc(u64 *desc)
{
desc[0] = 0ULL;
desc[2] = 0ULL;
}
static int
netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
struct netxen_cmd_buffer *pbuf;
struct netxen_skb_frag *buffrag;
struct cmd_desc_type0 *hwdesc, *first_desc;
struct pci_dev *pdev;
int i, k;
u32 producer;
int frag_count, no_of_desc;
u32 num_txd = tx_ring->num_desc;
frag_count = skb_shinfo(skb)->nr_frags + 1;
/* 4 fragments per cmd des */
no_of_desc = (frag_count + 3) >> 2;
if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
netif_stop_queue(netdev);
return NETDEV_TX_BUSY;
}
producer = tx_ring->producer;
pbuf = &tx_ring->cmd_buf_arr[producer];
pdev = adapter->pdev;
if (netxen_map_tx_skb(pdev, skb, pbuf))
goto drop_packet;
pbuf->skb = skb;
pbuf->frag_count = frag_count;
first_desc = hwdesc = &tx_ring->desc_head[producer];
netxen_clear_cmddesc((u64 *)hwdesc);
netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
netxen_set_tx_port(first_desc, adapter->portnum);
for (i = 0; i < frag_count; i++) {
k = i % 4;
if ((k == 0) && (i > 0)) {
/* move to next desc.*/
producer = get_next_index(producer, num_txd);
hwdesc = &tx_ring->desc_head[producer];
netxen_clear_cmddesc((u64 *)hwdesc);
tx_ring->cmd_buf_arr[producer].skb = NULL;
}
buffrag = &pbuf->frag_array[i];
hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
switch (k) {
case 0:
hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
break;
case 1:
hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
break;
case 2:
hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
break;
case 3:
hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
break;
}
}
tx_ring->producer = get_next_index(producer, num_txd);
netxen_tso_check(netdev, tx_ring, first_desc, skb);
netxen_nic_update_cmd_producer(adapter, tx_ring);
adapter->stats.txbytes += skb->len;
adapter->stats.xmitcalled++;
return NETDEV_TX_OK;
drop_packet:
adapter->stats.txdropped++;
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
static int netxen_nic_check_temp(struct netxen_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
uint32_t temp, temp_state, temp_val;
int rv = 0;
temp = NXRD32(adapter, CRB_TEMP_STATE);
temp_state = nx_get_temp_state(temp);
temp_val = nx_get_temp_val(temp);
if (temp_state == NX_TEMP_PANIC) {
printk(KERN_ALERT
"%s: Device temperature %d degrees C exceeds"
" maximum allowed. Hardware has been shut down.\n",
netdev->name, temp_val);
rv = 1;
} else if (temp_state == NX_TEMP_WARN) {
if (adapter->temp == NX_TEMP_NORMAL) {
printk(KERN_ALERT
"%s: Device temperature %d degrees C "
"exceeds operating range."
" Immediate action needed.\n",
netdev->name, temp_val);
}
} else {
if (adapter->temp == NX_TEMP_WARN) {
printk(KERN_INFO
"%s: Device temperature is now %d degrees C"
" in normal range.\n", netdev->name,
temp_val);
}
}
adapter->temp = temp_state;
return rv;
}
void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
{
struct net_device *netdev = adapter->netdev;
if (adapter->ahw.linkup && !linkup) {
printk(KERN_INFO "%s: %s NIC Link is down\n",
netxen_nic_driver_name, netdev->name);
adapter->ahw.linkup = 0;
if (netif_running(netdev)) {
netif_carrier_off(netdev);
netif_stop_queue(netdev);
}
adapter->link_changed = !adapter->has_link_events;
} else if (!adapter->ahw.linkup && linkup) {
printk(KERN_INFO "%s: %s NIC Link is up\n",
netxen_nic_driver_name, netdev->name);
adapter->ahw.linkup = 1;
if (netif_running(netdev)) {
netif_carrier_on(netdev);
netif_wake_queue(netdev);
}
adapter->link_changed = !adapter->has_link_events;
}
}
static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
{
u32 val, port, linkup;
port = adapter->physical_port;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
val = NXRD32(adapter, CRB_XG_STATE_P3);
val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
linkup = (val == XG_LINK_UP_P3);
} else {
val = NXRD32(adapter, CRB_XG_STATE);
if (adapter->ahw.port_type == NETXEN_NIC_GBE)
linkup = (val >> port) & 1;
else {
val = (val >> port*8) & 0xff;
linkup = (val == XG_LINK_UP);
}
}
netxen_advert_link_change(adapter, linkup);
}
static void netxen_nic_thermal_shutdown(struct netxen_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
netif_device_detach(netdev);
netxen_nic_down(adapter, netdev);
netxen_nic_detach(adapter);
}
static void netxen_watchdog(unsigned long v)
{
struct netxen_adapter *adapter = (struct netxen_adapter *)v;
if (netxen_nic_check_temp(adapter))
goto do_sched;
if (!adapter->has_link_events) {
netxen_nic_handle_phy_intr(adapter);
if (adapter->link_changed)
goto do_sched;
}
if (netif_running(adapter->netdev))
mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
return;
do_sched:
schedule_work(&adapter->watchdog_task);
}
void netxen_watchdog_task(struct work_struct *work)
{
struct netxen_adapter *adapter =
container_of(work, struct netxen_adapter, watchdog_task);
if (adapter->temp == NX_TEMP_PANIC) {
netxen_nic_thermal_shutdown(adapter);
return;
}
if (adapter->link_changed)
netxen_nic_set_link_parameters(adapter);
if (netif_running(adapter->netdev))
mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
}
static void netxen_tx_timeout(struct net_device *netdev)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
dev_err(&netdev->dev, "transmit timeout, resetting.\n");
schedule_work(&adapter->tx_timeout_task);
}
static void netxen_reset_task(struct work_struct *work)
{
struct netxen_adapter *adapter =
container_of(work, struct netxen_adapter, tx_timeout_task);
if (!netif_running(adapter->netdev))
return;
netxen_napi_disable(adapter);
adapter->netdev->trans_start = jiffies;
netxen_napi_enable(adapter);
netif_wake_queue(adapter->netdev);
}
struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
struct net_device_stats *stats = &adapter->net_stats;
memset(stats, 0, sizeof(*stats));
stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
stats->tx_packets = adapter->stats.xmitfinished;
stats->rx_bytes = adapter->stats.rxbytes;
stats->tx_bytes = adapter->stats.txbytes;
stats->rx_dropped = adapter->stats.rxdropped;
stats->tx_dropped = adapter->stats.txdropped;
return stats;
}
static irqreturn_t netxen_intr(int irq, void *data)
{
struct nx_host_sds_ring *sds_ring = data;
struct netxen_adapter *adapter = sds_ring->adapter;
u32 status = 0;
status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
if (!(status & adapter->legacy_intr.int_vec_bit))
return IRQ_NONE;
if (adapter->ahw.revision_id >= NX_P3_B1) {
/* check interrupt state machine, to be sure */
status = adapter->pci_read_immediate(adapter,
ISR_INT_STATE_REG);
if (!ISR_LEGACY_INT_TRIGGERED(status))
return IRQ_NONE;
} else {
unsigned long our_int = 0;
our_int = NXRD32(adapter, CRB_INT_VECTOR);
/* not our interrupt */
if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
return IRQ_NONE;
/* claim interrupt */
NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
}
/* clear interrupt */
if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
netxen_nic_disable_int(sds_ring);
adapter->pci_write_immediate(adapter,
adapter->legacy_intr.tgt_status_reg,
0xffffffff);
/* read twice to ensure write is flushed */
adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
napi_schedule(&sds_ring->napi);
return IRQ_HANDLED;
}
static irqreturn_t netxen_msi_intr(int irq, void *data)
{
struct nx_host_sds_ring *sds_ring = data;
struct netxen_adapter *adapter = sds_ring->adapter;
/* clear interrupt */
adapter->pci_write_immediate(adapter,
adapter->msi_tgt_status, 0xffffffff);
napi_schedule(&sds_ring->napi);
return IRQ_HANDLED;
}
static irqreturn_t netxen_msix_intr(int irq, void *data)
{
struct nx_host_sds_ring *sds_ring = data;
napi_schedule(&sds_ring->napi);
return IRQ_HANDLED;
}
static int netxen_nic_poll(struct napi_struct *napi, int budget)
{
struct nx_host_sds_ring *sds_ring =
container_of(napi, struct nx_host_sds_ring, napi);
struct netxen_adapter *adapter = sds_ring->adapter;
int tx_complete;
int work_done;
tx_complete = netxen_process_cmd_ring(adapter);
work_done = netxen_process_rcv_ring(sds_ring, budget);
if ((work_done < budget) && tx_complete) {
napi_complete(&sds_ring->napi);
if (netif_running(adapter->netdev))
netxen_nic_enable_int(sds_ring);
}
return work_done;
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static void netxen_nic_poll_controller(struct net_device *netdev)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
disable_irq(adapter->irq);
netxen_intr(adapter->irq, adapter);
enable_irq(adapter->irq);
}
#endif
static ssize_t
netxen_store_bridged_mode(struct device *dev,
struct device_attribute *attr, const char *buf, size_t len)
{
struct net_device *net = to_net_dev(dev);
struct netxen_adapter *adapter = netdev_priv(net);
unsigned long new;
int ret = -EINVAL;
if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
goto err_out;
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
goto err_out;
if (strict_strtoul(buf, 2, &new))
goto err_out;
if (!netxen_config_bridged_mode(adapter, !!new))
ret = len;
err_out:
return ret;
}
static ssize_t
netxen_show_bridged_mode(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct net_device *net = to_net_dev(dev);
struct netxen_adapter *adapter;
int bridged_mode = 0;
adapter = netdev_priv(net);
if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
return sprintf(buf, "%d\n", bridged_mode);
}
static struct device_attribute dev_attr_bridged_mode = {
.attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
.show = netxen_show_bridged_mode,
.store = netxen_store_bridged_mode,
};
static void
netxen_create_sysfs_entries(struct netxen_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
struct device *dev = &netdev->dev;
if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
/* bridged_mode control */
if (device_create_file(dev, &dev_attr_bridged_mode)) {
dev_warn(&netdev->dev,
"failed to create bridged_mode sysfs entry\n");
}
}
}
static void
netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
struct device *dev = &netdev->dev;
if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
device_remove_file(dev, &dev_attr_bridged_mode);
}
static void netxen_watchdog(unsigned long);
#ifdef CONFIG_INET
#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
static int
netxen_destip_supported(struct netxen_adapter *adapter)
{
if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
return 0;
if (adapter->ahw.cut_through)
return 0;
return 1;
}
static int netxen_netdev_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct netxen_adapter *adapter;
struct net_device *dev = (struct net_device *)ptr;
struct in_device *indev;
recheck:
if (dev == NULL)
goto done;
if (dev->priv_flags & IFF_802_1Q_VLAN) {
dev = vlan_dev_real_dev(dev);
goto recheck;
}
if (!is_netxen_netdev(dev))
goto done;
adapter = netdev_priv(dev);
if (!adapter || !netxen_destip_supported(adapter))
goto done;
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
goto done;
indev = in_dev_get(dev);
if (!indev)
goto done;
for_ifa(indev) {
switch (event) {
case NETDEV_UP:
netxen_config_ipaddr(adapter,
ifa->ifa_address, NX_IP_UP);
break;
case NETDEV_DOWN:
netxen_config_ipaddr(adapter,
ifa->ifa_address, NX_IP_DOWN);
break;
default:
break;
}
} endfor_ifa(indev);
in_dev_put(indev);
done:
return NOTIFY_DONE;
}
static int
netxen_inetaddr_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct netxen_adapter *adapter;
struct net_device *dev;
struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
recheck:
if (dev == NULL || !netif_running(dev))
goto done;
if (dev->priv_flags & IFF_802_1Q_VLAN) {
dev = vlan_dev_real_dev(dev);
goto recheck;
}
if (!is_netxen_netdev(dev))
goto done;
adapter = netdev_priv(dev);
if (!adapter || !netxen_destip_supported(adapter))
goto done;
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
goto done;
switch (event) {
case NETDEV_UP:
netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
break;
case NETDEV_DOWN:
netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
break;
default:
break;
}
done:
return NOTIFY_DONE;
}
static struct notifier_block netxen_netdev_cb = {
.notifier_call = netxen_netdev_event,
};
static struct notifier_block netxen_inetaddr_cb = {
.notifier_call = netxen_inetaddr_event,
};
#endif
static struct pci_driver netxen_driver = {
.name = netxen_nic_driver_name,
.id_table = netxen_pci_tbl,
.probe = netxen_nic_probe,
.remove = __devexit_p(netxen_nic_remove),
#ifdef CONFIG_PM
.suspend = netxen_nic_suspend,
.resume = netxen_nic_resume,
#endif
.shutdown = netxen_nic_shutdown
};
static int __init netxen_init_module(void)
{
printk(KERN_INFO "%s\n", netxen_nic_driver_string);
#ifdef CONFIG_INET
register_netdevice_notifier(&netxen_netdev_cb);
register_inetaddr_notifier(&netxen_inetaddr_cb);
#endif
return pci_register_driver(&netxen_driver);
}
module_init(netxen_init_module);
static void __exit netxen_exit_module(void)
{
pci_unregister_driver(&netxen_driver);
#ifdef CONFIG_INET
unregister_inetaddr_notifier(&netxen_inetaddr_cb);
unregister_netdevice_notifier(&netxen_netdev_cb);
#endif
}
module_exit(netxen_exit_module);
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