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linuxdebug/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2003 - 2009 NetXen, Inc.
* Copyright (C) 2009 - QLogic Corporation.
* All rights reserved.
*/
#include <linux/slab.h>
#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>
#include <linux/sysfs.h>
#include <linux/aer.h>
MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Intelligent Ethernet Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
char netxen_nic_driver_name[] = "netxen_nic";
static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
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;
static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
module_param(auto_fw_reset, int, 0644);
MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
static int netxen_nic_probe(struct pci_dev *pdev,
const struct pci_device_id *ent);
static void 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 netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
struct net_device *);
static void netxen_tx_timeout(struct net_device *netdev, unsigned int txqueue);
static void netxen_tx_timeout_task(struct work_struct *work);
static void netxen_fw_poll_work(struct work_struct *work);
static void netxen_schedule_work(struct netxen_adapter *adapter,
work_func_t func, int delay);
static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
static int netxen_nic_poll(struct napi_struct *napi, int budget);
static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
static void netxen_create_diag_entries(struct netxen_adapter *adapter);
static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
static int nx_dev_request_aer(struct netxen_adapter *adapter);
static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
static int netxen_can_start_firmware(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);
static void netxen_free_ip_list(struct netxen_adapter *, bool);
static void netxen_restore_indev_addr(struct net_device *dev, unsigned long);
static void netxen_nic_get_stats(struct net_device *dev,
struct rtnl_link_stats64 *stats);
static int netxen_nic_set_mac(struct net_device *netdev, void *p);
/* PCI Device ID Table */
#define ENTRY(device) \
{PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
.class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
static const struct pci_device_id netxen_pci_tbl[] = {
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)
{
NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
}
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)
{
NXWRIO(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;
NXWRIO(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;
NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
if (!NETXEN_IS_MSI_FAMILY(adapter))
NXWRIO(adapter, adapter->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)
{
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);
}
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 (dma_set_mask(&pdev->dev, mask) == 0 &&
dma_set_coherent_mask(&pdev->dev, 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 = dma_set_mask(&pdev->dev, mask);
if (err)
goto err_out;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
err = dma_set_coherent_mask(&pdev->dev, mask);
if (err)
goto err_out;
}
dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
}
return 0;
err_out:
dma_set_mask(&pdev->dev, old_mask);
dma_set_coherent_mask(&pdev->dev, old_cmask);
return err;
}
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);
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);
}
}
#define PCI_CAP_ID_GEN 0x10
static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
{
u32 pdevfuncsave;
u32 c8c9value = 0;
u32 chicken = 0;
u32 control = 0;
int i, pos;
struct pci_dev *pdev;
pdev = adapter->pdev;
chicken = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3));
/* clear chicken3.25:24 */
chicken &= 0xFCFFFFFF;
/*
* if gen1 and B0, set F1020 - if gen 2, do nothing
* if gen2 set to F1000
*/
pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
if (pos == 0xC0) {
pci_read_config_dword(pdev, pos + 0x10, &control);
if ((control & 0x000F0000) != 0x00020000) {
/* set chicken3.24 if gen1 */
chicken |= 0x01000000;
}
dev_info(&adapter->pdev->dev, "Gen2 strapping detected\n");
c8c9value = 0xF1000;
} else {
/* set chicken3.24 if gen1 */
chicken |= 0x01000000;
dev_info(&adapter->pdev->dev, "Gen1 strapping detected\n");
if (adapter->ahw.revision_id == NX_P3_B0)
c8c9value = 0xF1020;
else
c8c9value = 0;
}
NXWR32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3), chicken);
if (!c8c9value)
return;
pdevfuncsave = pdev->devfn;
if (pdevfuncsave & 0x07)
return;
for (i = 0; i < 8; i++) {
pci_read_config_dword(pdev, pos + 8, &control);
pci_read_config_dword(pdev, pos + 8, &control);
pci_write_config_dword(pdev, pos + 8, c8c9value);
pdev->devfn++;
}
pdev->devfn = pdevfuncsave;
}
static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
{
u32 control;
if (pdev->msix_cap) {
pci_read_config_dword(pdev, pdev->msix_cap, &control);
if (enable)
control |= PCI_MSIX_FLAGS_ENABLE;
else
control = 0;
pci_write_config_dword(pdev, pdev->msix_cap, 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;
u64 mac_addr;
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
u8 addr[ETH_ALEN];
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++)
addr[i] = *(p + 5 - i);
eth_hw_addr_set(netdev, addr);
memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
/* set station address */
if (!is_valid_ether_addr(netdev->dev_addr))
dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
return 0;
}
static 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 -EADDRNOTAVAIL;
if (netif_running(netdev)) {
netif_device_detach(netdev);
netxen_napi_disable(adapter);
}
memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
eth_hw_addr_set(netdev, addr->sa_data);
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 netdev_features_t netxen_fix_features(struct net_device *dev,
netdev_features_t features)
{
if (!(features & NETIF_F_RXCSUM)) {
netdev_info(dev, "disabling LRO as RXCSUM is off\n");
features &= ~NETIF_F_LRO;
}
return features;
}
static int netxen_set_features(struct net_device *dev,
netdev_features_t features)
{
struct netxen_adapter *adapter = netdev_priv(dev);
int hw_lro;
if (!((dev->features ^ features) & NETIF_F_LRO))
return 0;
hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED
: NETXEN_NIC_LRO_DISABLED;
if (netxen_config_hw_lro(adapter, hw_lro))
return -EIO;
if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter))
return -EIO;
return 0;
}
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_stats64 = netxen_nic_get_stats,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_rx_mode = 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,
.ndo_fix_features = netxen_fix_features,
.ndo_set_features = netxen_set_features,
};
static inline void netxen_set_interrupt_mode(struct netxen_adapter *adapter,
u32 mode)
{
NXWR32(adapter, NETXEN_INTR_MODE_REG, mode);
}
static inline u32 netxen_get_interrupt_mode(struct netxen_adapter *adapter)
{
return NXRD32(adapter, NETXEN_INTR_MODE_REG);
}
static void
netxen_initialize_interrupt_registers(struct netxen_adapter *adapter)
{
struct netxen_legacy_intr_set *legacy_intrp;
u32 tgt_status_reg, int_state_reg;
if (adapter->ahw.revision_id >= NX_P3_B0)
legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
else
legacy_intrp = &legacy_intr[0];
tgt_status_reg = legacy_intrp->tgt_status_reg;
int_state_reg = ISR_INT_STATE_REG;
adapter->int_vec_bit = legacy_intrp->int_vec_bit;
adapter->tgt_status_reg = netxen_get_ioaddr(adapter, tgt_status_reg);
adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
legacy_intrp->tgt_mask_reg);
adapter->pci_int_reg = netxen_get_ioaddr(adapter,
legacy_intrp->pci_int_reg);
adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
if (adapter->ahw.revision_id >= NX_P3_B1)
adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
int_state_reg);
else
adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
CRB_INT_VECTOR);
}
static int netxen_setup_msi_interrupts(struct netxen_adapter *adapter,
int num_msix)
{
struct pci_dev *pdev = adapter->pdev;
u32 value;
int err;
if (adapter->msix_supported) {
netxen_init_msix_entries(adapter, num_msix);
err = pci_enable_msix_range(pdev, adapter->msix_entries,
num_msix, 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 0;
}
/* fall through for msi */
}
if (use_msi && !pci_enable_msi(pdev)) {
value = msi_tgt_status[adapter->ahw.pci_func];
adapter->flags |= NETXEN_NIC_MSI_ENABLED;
adapter->tgt_status_reg = netxen_get_ioaddr(adapter, value);
adapter->msix_entries[0].vector = pdev->irq;
dev_info(&pdev->dev, "using msi interrupts\n");
return 0;
}
dev_err(&pdev->dev, "Failed to acquire MSI-X/MSI interrupt vector\n");
return -EIO;
}
static int netxen_setup_intr(struct netxen_adapter *adapter)
{
struct pci_dev *pdev = adapter->pdev;
int 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);
netxen_initialize_interrupt_registers(adapter);
netxen_set_msix_bit(pdev, 0);
if (adapter->portnum == 0) {
if (!netxen_setup_msi_interrupts(adapter, num_msix))
netxen_set_interrupt_mode(adapter, NETXEN_MSI_MODE);
else
netxen_set_interrupt_mode(adapter, NETXEN_INTX_MODE);
} else {
if (netxen_get_interrupt_mode(adapter) == NETXEN_MSI_MODE &&
netxen_setup_msi_interrupts(adapter, num_msix)) {
dev_err(&pdev->dev, "Co-existence of MSI-X/MSI and INTx interrupts is not supported\n");
return -EIO;
}
}
if (!NETXEN_IS_MSI_FAMILY(adapter)) {
adapter->msix_entries[0].vector = pdev->irq;
dev_info(&pdev->dev, "using legacy interrupts\n");
}
return 0;
}
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 *db_ptr = NULL;
resource_size_t mem_base, db_base;
unsigned long mem_len, db_len = 0;
struct pci_dev *pdev = adapter->pdev;
int pci_func = adapter->ahw.pci_func;
struct netxen_hardware_context *ahw = &adapter->ahw;
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->ahw.crb_win = -1;
adapter->ahw.ocm_win = -1;
/* remap phys address */
mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
mem_len = pci_resource_len(pdev, 0);
/* 128 Meg of memory */
if (mem_len == NETXEN_PCI_128MB_SIZE) {
ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
SECOND_PAGE_GROUP_SIZE);
ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
THIRD_PAGE_GROUP_SIZE);
if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
ahw->pci_base2 == NULL) {
dev_err(&pdev->dev, "failed to map PCI bar 0\n");
err = -EIO;
goto err_out;
}
ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
} else if (mem_len == NETXEN_PCI_32MB_SIZE) {
ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
dev_err(&pdev->dev, "failed to map PCI bar 0\n");
err = -EIO;
goto err_out;
}
} else if (mem_len == NETXEN_PCI_2MB_SIZE) {
ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
if (ahw->pci_base0 == NULL) {
dev_err(&pdev->dev, "failed to map PCI bar 0\n");
return -EIO;
}
ahw->pci_len0 = mem_len;
} else {
return -EIO;
}
netxen_setup_hwops(adapter);
dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
} else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
}
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 void
netxen_check_options(struct netxen_adapter *adapter)
{
u32 fw_major, fw_minor, fw_build, prev_fw_version;
char brd_name[NETXEN_MAX_SHORT_NAME];
char serial_num[32];
int i, offset, val, err;
__le32 *ptr32;
struct pci_dev *pdev = adapter->pdev;
adapter->driver_mismatch = 0;
ptr32 = (__le32 *)&serial_num;
offset = NX_FW_SERIAL_NUM_OFFSET;
for (i = 0; i < 8; i++) {
err = netxen_rom_fast_read(adapter, offset, &val);
if (err) {
dev_err(&pdev->dev, "error reading board info\n");
adapter->driver_mismatch = 1;
return;
}
ptr32[i] = cpu_to_le32(val);
offset += sizeof(u32);
}
fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
prev_fw_version = adapter->fw_version;
adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
/* Get FW Mini Coredump template and store it */
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
if (adapter->mdump.md_template == NULL ||
adapter->fw_version > prev_fw_version) {
kfree(adapter->mdump.md_template);
adapter->mdump.md_template = NULL;
err = netxen_setup_minidump(adapter);
if (err)
dev_err(&adapter->pdev->dev,
"Failed to setup minidump rcode = %d\n", err);
}
}
if (adapter->portnum == 0) {
if (netxen_nic_get_brd_name_by_type(adapter->ahw.board_type,
brd_name))
strcpy(serial_num, "Unknown");
pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
module_name(THIS_MODULE),
brd_name, serial_num, adapter->ahw.revision_id);
}
if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
adapter->driver_mismatch = 1;
dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
fw_major, fw_minor, fw_build);
return;
}
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
i = NXRD32(adapter, NETXEN_SRE_MISC);
adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
}
dev_info(&pdev->dev, "Driver v%s, firmware v%d.%d.%d [%s]\n",
NETXEN_NIC_LINUX_VERSIONID, fw_major, fw_minor, fw_build,
adapter->ahw.cut_through ? "cut-through" : "legacy");
if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
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 {
u32 flashed_ver = 0;
netxen_rom_fast_read(adapter,
NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
if (flashed_ver >= 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_start_firmware(struct netxen_adapter *adapter)
{
int val, err, first_boot;
struct pci_dev *pdev = adapter->pdev;
/* required for NX2031 dummy dma */
err = nx_set_dma_mask(adapter);
if (err)
return err;
err = netxen_can_start_firmware(adapter);
if (err < 0)
return err;
if (!err)
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;
}
netxen_request_firmware(adapter);
err = netxen_need_fw_reset(adapter);
if (err < 0)
goto err_out;
if (err == 0)
goto pcie_strap_init;
if (first_boot != 0x55555555) {
NXWR32(adapter, CRB_CMDPEG_STATE, 0);
netxen_pinit_from_rom(adapter);
msleep(1);
}
NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
netxen_set_port_mode(adapter);
err = netxen_load_firmware(adapter);
if (err)
goto err_out;
netxen_release_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)
goto err_out;
/*
* 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);
pcie_strap_init:
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
netxen_pcie_strap_init(adapter);
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);
goto err_out;
}
NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
nx_update_dma_mask(adapter);
netxen_check_options(adapter);
adapter->need_fw_reset = 0;
/* fall through and release firmware */
err_out:
netxen_release_firmware(adapter);
return err;
}
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 = 0;
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;
}
/* with rtnl_lock */
static int
__netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
{
int err;
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
return -EIO;
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, adapter->mac_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 (netdev->features & NETIF_F_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);
set_bit(__NX_DEV_UP, &adapter->state);
return 0;
}
/* Usage: During resume and firmware recovery module.*/
static inline int
netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
{
int err = 0;
rtnl_lock();
if (netif_running(netdev))
err = __netxen_nic_up(adapter, netdev);
rtnl_unlock();
return err;
}
/* with rtnl_lock */
static void
__netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
{
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
return;
if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
return;
smp_mb();
netif_carrier_off(netdev);
netif_tx_disable(netdev);
if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
netxen_linkevent_request(adapter, 0);
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);
}
/* Usage: During suspend and firmware recovery module */
static inline void
netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
{
rtnl_lock();
if (netif_running(netdev))
__netxen_nic_down(adapter, netdev);
rtnl_unlock();
}
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;
u32 capab2;
if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
return 0;
err = netxen_init_firmware(adapter);
if (err)
return err;
adapter->flags &= ~NETXEN_FW_MSS_CAP;
if (adapter->capabilities & NX_FW_CAPABILITY_MORE_CAPS) {
capab2 = NXRD32(adapter, CRB_FW_CAPABILITIES_2);
if (capab2 & NX_FW_CAPABILITY_2_LRO_MAX_TCP_SEG)
adapter->flags |= NETXEN_FW_MSS_CAP;
}
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;
}
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 = netxen_get_ioaddr(adapter,
crb_cmd_producer[adapter->portnum]);
tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
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 (test_and_set_bit(__NX_RESETTING, &adapter->state))
return -EBUSY;
if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
netif_device_detach(netdev);
if (netif_running(netdev))
__netxen_nic_down(adapter, netdev);
netxen_nic_detach(adapter);
if (netif_running(netdev)) {
err = netxen_nic_attach(adapter);
if (!err)
err = __netxen_nic_up(adapter, netdev);
if (err)
goto done;
}
netif_device_attach(netdev);
}
done:
clear_bit(__NX_RESETTING, &adapter->state);
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->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 = 5*HZ;
netxen_nic_change_mtu(netdev, netdev->mtu);
netdev->ethtool_ops = &netxen_nic_ethtool_ops;
netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
NETIF_F_RXCSUM;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
netdev->vlan_features |= netdev->hw_features;
if (adapter->pci_using_dac) {
netdev->features |= NETIF_F_HIGHDMA;
netdev->vlan_features |= NETIF_F_HIGHDMA;
}
if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
netdev->hw_features |= NETIF_F_LRO;
netdev->features |= netdev->hw_features;
netdev->irq = adapter->msix_entries[0].vector;
INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
if (netxen_read_mac_addr(adapter))
dev_warn(&pdev->dev, "failed to read mac addr\n");
netif_carrier_off(netdev);
err = register_netdev(netdev);
if (err) {
dev_err(&pdev->dev, "failed to register net device\n");
return err;
}
return 0;
}
#define NETXEN_ULA_ADAPTER_KEY (0xdaddad01)
#define NETXEN_NON_ULA_ADAPTER_KEY (0xdaddad00)
static void netxen_read_ula_info(struct netxen_adapter *adapter)
{
u32 temp;
/* Print ULA info only once for an adapter */
if (adapter->portnum != 0)
return;
temp = NXRD32(adapter, NETXEN_ULA_KEY);
switch (temp) {
case NETXEN_ULA_ADAPTER_KEY:
dev_info(&adapter->pdev->dev, "ULA adapter");
break;
case NETXEN_NON_ULA_ADAPTER_KEY:
dev_info(&adapter->pdev->dev, "non ULA adapter");
break;
default:
break;
}
return;
}
#ifdef CONFIG_PCIEAER
static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
{
struct pci_dev *pdev = adapter->pdev;
struct pci_dev *root = pdev->bus->self;
u32 aer_pos;
/* root bus? */
if (!root)
return;
if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
return;
if (pci_pcie_type(root) != PCI_EXP_TYPE_ROOT_PORT)
return;
aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
if (!aer_pos)
return;
pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
}
#endif
static int
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;
u32 val;
if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
pr_warn("%s: chip revisions between 0x%x-0x%x will not be enabled\n",
module_name(THIS_MODULE), 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;
if (NX_IS_REVISION_P3(pdev->revision))
pci_enable_pcie_error_reporting(pdev);
pci_set_master(pdev);
netdev = alloc_etherdev(sizeof(struct netxen_adapter));
if(!netdev) {
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;
rwlock_init(&adapter->ahw.crb_lock);
spin_lock_init(&adapter->ahw.mem_lock);
spin_lock_init(&adapter->tx_clean_lock);
INIT_LIST_HEAD(&adapter->mac_list);
INIT_LIST_HEAD(&adapter->ip_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;
}
#ifdef CONFIG_PCIEAER
netxen_mask_aer_correctable(adapter);
#endif
/* 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_check_flash_fw_compatibility(adapter);
if (err)
goto err_out_iounmap;
if (adapter->portnum == 0) {
val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
if (val != 0xffffffff && val != 0) {
NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
adapter->need_fw_reset = 1;
}
}
err = netxen_start_firmware(adapter);
if (err)
goto err_out_decr_ref;
/*
* 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;
}
/* MTU range: 0 - 8000 (P2) or 9600 (P3) */
netdev->min_mtu = 0;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
netdev->max_mtu = P3_MAX_MTU;
else
netdev->max_mtu = P2_MAX_MTU;
netxen_nic_clear_stats(adapter);
err = netxen_setup_intr(adapter);
if (err) {
dev_err(&adapter->pdev->dev,
"Failed to setup interrupts, error = %d\n", err);
goto err_out_disable_msi;
}
netxen_read_ula_info(adapter);
err = netxen_setup_netdev(adapter, netdev);
if (err)
goto err_out_disable_msi;
pci_set_drvdata(pdev, adapter);
netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
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;
}
netxen_create_diag_entries(adapter);
return 0;
err_out_disable_msi:
netxen_teardown_intr(adapter);
netxen_free_dummy_dma(adapter);
err_out_decr_ref:
nx_decr_dev_ref_cnt(adapter);
err_out_iounmap:
netxen_cleanup_pci_map(adapter);
err_out_free_netdev:
free_netdev(netdev);
err_out_free_res:
if (NX_IS_REVISION_P3(pdev->revision))
pci_disable_pcie_error_reporting(pdev);
pci_release_regions(pdev);
err_out_disable_pdev:
pci_disable_device(pdev);
return err;
}
static
void netxen_cleanup_minidump(struct netxen_adapter *adapter)
{
kfree(adapter->mdump.md_template);
adapter->mdump.md_template = NULL;
if (adapter->mdump.md_capture_buff) {
vfree(adapter->mdump.md_capture_buff);
adapter->mdump.md_capture_buff = NULL;
}
}
static void 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;
netxen_cancel_fw_work(adapter);
unregister_netdev(netdev);
cancel_work_sync(&adapter->tx_timeout_task);
netxen_free_ip_list(adapter, false);
netxen_nic_detach(adapter);
nx_decr_dev_ref_cnt(adapter);
if (adapter->portnum == 0)
netxen_free_dummy_dma(adapter);
clear_bit(__NX_RESETTING, &adapter->state);
netxen_teardown_intr(adapter);
netxen_set_interrupt_mode(adapter, 0);
netxen_remove_diag_entries(adapter);
netxen_cleanup_pci_map(adapter);
netxen_release_firmware(adapter);
if (NX_IS_REVISION_P3(pdev->revision)) {
netxen_cleanup_minidump(adapter);
pci_disable_pcie_error_reporting(pdev);
}
pci_release_regions(pdev);
pci_disable_device(pdev);
free_netdev(netdev);
}
static void netxen_nic_detach_func(struct netxen_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
netif_device_detach(netdev);
netxen_cancel_fw_work(adapter);
if (netif_running(netdev))
netxen_nic_down(adapter, netdev);
cancel_work_sync(&adapter->tx_timeout_task);
netxen_nic_detach(adapter);
if (adapter->portnum == 0)
netxen_free_dummy_dma(adapter);
nx_decr_dev_ref_cnt(adapter);
clear_bit(__NX_RESETTING, &adapter->state);
}
static int netxen_nic_attach_late_func(struct pci_dev *pdev)
{
struct netxen_adapter *adapter = pci_get_drvdata(pdev);
struct net_device *netdev = adapter->netdev;
int err;
pci_set_master(pdev);
adapter->ahw.crb_win = -1;
adapter->ahw.ocm_win = -1;
err = netxen_start_firmware(adapter);
if (err) {
dev_err(&pdev->dev, "failed to start firmware\n");
return err;
}
if (netif_running(netdev)) {
err = netxen_nic_attach(adapter);
if (err)
goto err_out;
err = netxen_nic_up(adapter, netdev);
if (err)
goto err_out_detach;
netxen_restore_indev_addr(netdev, NETDEV_UP);
}
netif_device_attach(netdev);
netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
return 0;
err_out_detach:
netxen_nic_detach(adapter);
err_out:
nx_decr_dev_ref_cnt(adapter);
return err;
}
static int netxen_nic_attach_func(struct pci_dev *pdev)
{
int err;
err = pci_enable_device(pdev);
if (err)
return err;
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
return netxen_nic_attach_late_func(pdev);
}
static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
pci_channel_state_t state)
{
struct netxen_adapter *adapter = pci_get_drvdata(pdev);
if (state == pci_channel_io_perm_failure)
return PCI_ERS_RESULT_DISCONNECT;
if (nx_dev_request_aer(adapter))
return PCI_ERS_RESULT_RECOVERED;
netxen_nic_detach_func(adapter);
pci_disable_device(pdev);
return PCI_ERS_RESULT_NEED_RESET;
}
static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
{
int err = 0;
err = netxen_nic_attach_func(pdev);
return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
}
static void netxen_nic_shutdown(struct pci_dev *pdev)
{
struct netxen_adapter *adapter = pci_get_drvdata(pdev);
netxen_nic_detach_func(adapter);
if (pci_save_state(pdev))
return;
if (netxen_nic_wol_supported(adapter)) {
pci_enable_wake(pdev, PCI_D3cold, 1);
pci_enable_wake(pdev, PCI_D3hot, 1);
}
pci_disable_device(pdev);
}
static int __maybe_unused
netxen_nic_suspend(struct device *dev_d)
{
struct netxen_adapter *adapter = dev_get_drvdata(dev_d);
netxen_nic_detach_func(adapter);
if (netxen_nic_wol_supported(adapter))
device_wakeup_enable(dev_d);
return 0;
}
static int __maybe_unused
netxen_nic_resume(struct device *dev_d)
{
return netxen_nic_attach_late_func(to_pci_dev(dev_d));
}
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 (skb_vlan_tag_present(skb)) {
flags = FLAGS_VLAN_OOB;
vid = skb_vlan_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_tcp_all_headers(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;
skb_frag_t *frag;
int i, nr_frags;
dma_addr_t map;
nr_frags = skb_shinfo(skb)->nr_frags;
nf = &pbuf->frag_array[0];
map = dma_map_single(&pdev->dev, skb->data, skb_headlen(skb),
DMA_TO_DEVICE);
if (dma_mapping_error(&pdev->dev, 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 = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
DMA_TO_DEVICE);
if (dma_mapping_error(&pdev->dev, map))
goto unwind;
nf->dma = map;
nf->length = skb_frag_size(frag);
}
return 0;
unwind:
while (--i >= 0) {
nf = &pbuf->frag_array[i+1];
dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE);
nf->dma = 0ULL;
}
nf = &pbuf->frag_array[0];
dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE);
nf->dma = 0ULL;
out_err:
return -ENOMEM;
}
static inline void
netxen_clear_cmddesc(u64 *desc)
{
desc[0] = 0ULL;
desc[2] = 0ULL;
}
static netdev_tx_t
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;
int delta = 0;
skb_frag_t *frag;
u32 producer;
int frag_count;
u32 num_txd = tx_ring->num_desc;
frag_count = skb_shinfo(skb)->nr_frags + 1;
/* 14 frags supported for normal packet and
* 32 frags supported for TSO packet
*/
if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) {
for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) {
frag = &skb_shinfo(skb)->frags[i];
delta += skb_frag_size(frag);
}
if (!__pskb_pull_tail(skb, delta))
goto drop_packet;
frag_count = 1 + skb_shinfo(skb)->nr_frags;
}
if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
netif_stop_queue(netdev);
smp_mb();
if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
netif_start_queue(netdev);
else
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);
adapter->stats.txbytes += skb->len;
adapter->stats.xmitcalled++;
netxen_nic_update_cmd_producer(adapter, tx_ring);
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);
val = (val >> port*8) & 0xff;
linkup = (val == XG_LINK_UP);
}
netxen_advert_link_change(adapter, linkup);
}
static void netxen_tx_timeout(struct net_device *netdev, unsigned int txqueue)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
if (test_bit(__NX_RESETTING, &adapter->state))
return;
dev_err(&netdev->dev, "transmit timeout, resetting.\n");
schedule_work(&adapter->tx_timeout_task);
}
static void netxen_tx_timeout_task(struct work_struct *work)
{
struct netxen_adapter *adapter =
container_of(work, struct netxen_adapter, tx_timeout_task);
if (!netif_running(adapter->netdev))
return;
if (test_and_set_bit(__NX_RESETTING, &adapter->state))
return;
if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
goto request_reset;
rtnl_lock();
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
/* try to scrub interrupt */
netxen_napi_disable(adapter);
netxen_napi_enable(adapter);
netif_wake_queue(adapter->netdev);
clear_bit(__NX_RESETTING, &adapter->state);
} else {
clear_bit(__NX_RESETTING, &adapter->state);
if (netxen_nic_reset_context(adapter)) {
rtnl_unlock();
goto request_reset;
}
}
netif_trans_update(adapter->netdev);
rtnl_unlock();
return;
request_reset:
adapter->need_fw_reset = 1;
clear_bit(__NX_RESETTING, &adapter->state);
}
static void netxen_nic_get_stats(struct net_device *netdev,
struct rtnl_link_stats64 *stats)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
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;
}
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 = readl(adapter->isr_int_vec);
if (!(status & adapter->int_vec_bit))
return IRQ_NONE;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
/* check interrupt state machine, to be sure */
status = readl(adapter->crb_int_state_reg);
if (!ISR_LEGACY_INT_TRIGGERED(status))
return IRQ_NONE;
} else {
unsigned long our_int = 0;
our_int = readl(adapter->crb_int_state_reg);
/* not our interrupt */
if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
return IRQ_NONE;
/* claim interrupt */
writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
/* clear interrupt */
netxen_nic_disable_int(sds_ring);
}
writel(0xffffffff, adapter->tgt_status_reg);
/* read twice to ensure write is flushed */
readl(adapter->isr_int_vec);
readl(adapter->isr_int_vec);
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 */
writel(0xffffffff, adapter->tgt_status_reg);
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 (!tx_complete)
work_done = budget;
if (work_done < budget) {
napi_complete_done(&sds_ring->napi, work_done);
if (test_bit(__NX_DEV_UP, &adapter->state))
netxen_nic_enable_int(sds_ring);
}
return work_done;
}
static int
nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
{
int count;
if (netxen_api_lock(adapter))
return -EIO;
count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
netxen_api_unlock(adapter);
return count;
}
static int
nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
{
int count, state;
if (netxen_api_lock(adapter))
return -EIO;
count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
WARN_ON(count == 0);
NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
state = NXRD32(adapter, NX_CRB_DEV_STATE);
if (count == 0 && state != NX_DEV_FAILED)
NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
netxen_api_unlock(adapter);
return count;
}
static int
nx_dev_request_aer(struct netxen_adapter *adapter)
{
u32 state;
int ret = -EINVAL;
if (netxen_api_lock(adapter))
return ret;
state = NXRD32(adapter, NX_CRB_DEV_STATE);
if (state == NX_DEV_NEED_AER)
ret = 0;
else if (state == NX_DEV_READY) {
NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
ret = 0;
}
netxen_api_unlock(adapter);
return ret;
}
int
nx_dev_request_reset(struct netxen_adapter *adapter)
{
u32 state;
int ret = -EINVAL;
if (netxen_api_lock(adapter))
return ret;
state = NXRD32(adapter, NX_CRB_DEV_STATE);
if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED)
ret = 0;
else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
adapter->flags |= NETXEN_FW_RESET_OWNER;
ret = 0;
}
netxen_api_unlock(adapter);
return ret;
}
static int
netxen_can_start_firmware(struct netxen_adapter *adapter)
{
int count;
int can_start = 0;
if (netxen_api_lock(adapter)) {
nx_incr_dev_ref_cnt(adapter);
return -1;
}
count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
count = 0;
if (count == 0) {
can_start = 1;
NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
}
NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
netxen_api_unlock(adapter);
return can_start;
}
static void
netxen_schedule_work(struct netxen_adapter *adapter,
work_func_t func, int delay)
{
INIT_DELAYED_WORK(&adapter->fw_work, func);
schedule_delayed_work(&adapter->fw_work, delay);
}
static void
netxen_cancel_fw_work(struct netxen_adapter *adapter)
{
while (test_and_set_bit(__NX_RESETTING, &adapter->state))
msleep(10);
cancel_delayed_work_sync(&adapter->fw_work);
}
static void
netxen_attach_work(struct work_struct *work)
{
struct netxen_adapter *adapter = container_of(work,
struct netxen_adapter, fw_work.work);
struct net_device *netdev = adapter->netdev;
int err = 0;
if (netif_running(netdev)) {
err = netxen_nic_attach(adapter);
if (err)
goto done;
err = netxen_nic_up(adapter, netdev);
if (err) {
netxen_nic_detach(adapter);
goto done;
}
netxen_restore_indev_addr(netdev, NETDEV_UP);
}
netif_device_attach(netdev);
done:
adapter->fw_fail_cnt = 0;
clear_bit(__NX_RESETTING, &adapter->state);
netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
}
static void
netxen_fwinit_work(struct work_struct *work)
{
struct netxen_adapter *adapter = container_of(work,
struct netxen_adapter, fw_work.work);
int dev_state;
int count;
dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
if (adapter->flags & NETXEN_FW_RESET_OWNER) {
count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
WARN_ON(count == 0);
if (count == 1) {
if (adapter->mdump.md_enabled) {
rtnl_lock();
netxen_dump_fw(adapter);
rtnl_unlock();
}
adapter->flags &= ~NETXEN_FW_RESET_OWNER;
if (netxen_api_lock(adapter)) {
clear_bit(__NX_RESETTING, &adapter->state);
NXWR32(adapter, NX_CRB_DEV_STATE,
NX_DEV_FAILED);
return;
}
count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
dev_state = NX_DEV_COLD;
netxen_api_unlock(adapter);
}
}
switch (dev_state) {
case NX_DEV_COLD:
case NX_DEV_READY:
if (!netxen_start_firmware(adapter)) {
netxen_schedule_work(adapter, netxen_attach_work, 0);
return;
}
break;
case NX_DEV_NEED_RESET:
case NX_DEV_INITALIZING:
netxen_schedule_work(adapter,
netxen_fwinit_work, 2 * FW_POLL_DELAY);
return;
case NX_DEV_FAILED:
default:
nx_incr_dev_ref_cnt(adapter);
break;
}
if (netxen_api_lock(adapter)) {
clear_bit(__NX_RESETTING, &adapter->state);
return;
}
NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_FAILED);
netxen_api_unlock(adapter);
dev_err(&adapter->pdev->dev, "%s: Device initialization Failed\n",
adapter->netdev->name);
clear_bit(__NX_RESETTING, &adapter->state);
}
static void
netxen_detach_work(struct work_struct *work)
{
struct netxen_adapter *adapter = container_of(work,
struct netxen_adapter, fw_work.work);
struct net_device *netdev = adapter->netdev;
int ref_cnt = 0, delay;
u32 status;
netif_device_detach(netdev);
netxen_nic_down(adapter, netdev);
rtnl_lock();
netxen_nic_detach(adapter);
rtnl_unlock();
status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
if (status & NX_RCODE_FATAL_ERROR)
goto err_ret;
if (adapter->temp == NX_TEMP_PANIC)
goto err_ret;
if (!(adapter->flags & NETXEN_FW_RESET_OWNER))
ref_cnt = nx_decr_dev_ref_cnt(adapter);
if (ref_cnt == -EIO)
goto err_ret;
delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
adapter->fw_wait_cnt = 0;
netxen_schedule_work(adapter, netxen_fwinit_work, delay);
return;
err_ret:
clear_bit(__NX_RESETTING, &adapter->state);
}
static int
netxen_check_health(struct netxen_adapter *adapter)
{
u32 state, heartbit;
u32 peg_status;
struct net_device *netdev = adapter->netdev;
state = NXRD32(adapter, NX_CRB_DEV_STATE);
if (state == NX_DEV_NEED_AER)
return 0;
if (netxen_nic_check_temp(adapter))
goto detach;
if (adapter->need_fw_reset) {
if (nx_dev_request_reset(adapter))
return 0;
goto detach;
}
/* NX_DEV_NEED_RESET, this state can be marked in two cases
* 1. Tx timeout 2. Fw hang
* Send request to destroy context in case of tx timeout only
* and doesn't required in case of Fw hang
*/
if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED) {
adapter->need_fw_reset = 1;
if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
goto detach;
}
if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
return 0;
heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
if (heartbit != adapter->heartbit) {
adapter->heartbit = heartbit;
adapter->fw_fail_cnt = 0;
if (adapter->need_fw_reset)
goto detach;
return 0;
}
if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
return 0;
if (nx_dev_request_reset(adapter))
return 0;
clear_bit(__NX_FW_ATTACHED, &adapter->state);
dev_err(&netdev->dev, "firmware hang detected\n");
peg_status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
dev_err(&adapter->pdev->dev, "Dumping hw/fw registers\n"
"PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2: 0x%x,\n"
"PEG_NET_0_PC: 0x%x, PEG_NET_1_PC: 0x%x,\n"
"PEG_NET_2_PC: 0x%x, PEG_NET_3_PC: 0x%x,\n"
"PEG_NET_4_PC: 0x%x\n",
peg_status,
NXRD32(adapter, NETXEN_PEG_HALT_STATUS2),
NXRD32(adapter, NETXEN_CRB_PEG_NET_0 + 0x3c),
NXRD32(adapter, NETXEN_CRB_PEG_NET_1 + 0x3c),
NXRD32(adapter, NETXEN_CRB_PEG_NET_2 + 0x3c),
NXRD32(adapter, NETXEN_CRB_PEG_NET_3 + 0x3c),
NXRD32(adapter, NETXEN_CRB_PEG_NET_4 + 0x3c));
if (NX_FWERROR_PEGSTAT1(peg_status) == 0x67)
dev_err(&adapter->pdev->dev,
"Firmware aborted with error code 0x00006700. "
"Device is being reset.\n");
detach:
if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
!test_and_set_bit(__NX_RESETTING, &adapter->state))
netxen_schedule_work(adapter, netxen_detach_work, 0);
return 1;
}
static void
netxen_fw_poll_work(struct work_struct *work)
{
struct netxen_adapter *adapter = container_of(work,
struct netxen_adapter, fw_work.work);
if (test_bit(__NX_RESETTING, &adapter->state))
goto reschedule;
if (test_bit(__NX_DEV_UP, &adapter->state) &&
!(adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)) {
if (!adapter->has_link_events) {
netxen_nic_handle_phy_intr(adapter);
if (adapter->link_changed)
netxen_nic_set_link_parameters(adapter);
}
}
if (netxen_check_health(adapter))
return;
reschedule:
netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
}
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 (kstrtoul(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 const struct device_attribute dev_attr_bridged_mode = {
.attr = { .name = "bridged_mode", .mode = 0644 },
.show = netxen_show_bridged_mode,
.store = netxen_store_bridged_mode,
};
static ssize_t
netxen_store_diag_mode(struct device *dev,
struct device_attribute *attr, const char *buf, size_t len)
{
struct netxen_adapter *adapter = dev_get_drvdata(dev);
unsigned long new;
if (kstrtoul(buf, 2, &new))
return -EINVAL;
if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
return len;
}
static ssize_t
netxen_show_diag_mode(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct netxen_adapter *adapter = dev_get_drvdata(dev);
return sprintf(buf, "%d\n",
!!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
}
static const struct device_attribute dev_attr_diag_mode = {
.attr = { .name = "diag_mode", .mode = 0644 },
.show = netxen_show_diag_mode,
.store = netxen_store_diag_mode,
};
static int
netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
loff_t offset, size_t size)
{
size_t crb_size = 4;
if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
return -EIO;
if (offset < NETXEN_PCI_CRBSPACE) {
if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
return -EINVAL;
if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
NETXEN_PCI_CAMQM_2M_END))
crb_size = 8;
else
return -EINVAL;
}
if ((size != crb_size) || (offset & (crb_size-1)))
return -EINVAL;
return 0;
}
static ssize_t
netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t offset, size_t size)
{
struct device *dev = kobj_to_dev(kobj);
struct netxen_adapter *adapter = dev_get_drvdata(dev);
u32 data;
u64 qmdata;
int ret;
ret = netxen_sysfs_validate_crb(adapter, offset, size);
if (ret != 0)
return ret;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
NETXEN_PCI_CAMQM_2M_END)) {
netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
memcpy(buf, &qmdata, size);
} else {
data = NXRD32(adapter, offset);
memcpy(buf, &data, size);
}
return size;
}
static ssize_t
netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t offset, size_t size)
{
struct device *dev = kobj_to_dev(kobj);
struct netxen_adapter *adapter = dev_get_drvdata(dev);
u32 data;
u64 qmdata;
int ret;
ret = netxen_sysfs_validate_crb(adapter, offset, size);
if (ret != 0)
return ret;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
NETXEN_PCI_CAMQM_2M_END)) {
memcpy(&qmdata, buf, size);
netxen_pci_camqm_write_2M(adapter, offset, qmdata);
} else {
memcpy(&data, buf, size);
NXWR32(adapter, offset, data);
}
return size;
}
static int
netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
loff_t offset, size_t size)
{
if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
return -EIO;
if ((size != 8) || (offset & 0x7))
return -EIO;
return 0;
}
static ssize_t
netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t offset, size_t size)
{
struct device *dev = kobj_to_dev(kobj);
struct netxen_adapter *adapter = dev_get_drvdata(dev);
u64 data;
int ret;
ret = netxen_sysfs_validate_mem(adapter, offset, size);
if (ret != 0)
return ret;
if (adapter->pci_mem_read(adapter, offset, &data))
return -EIO;
memcpy(buf, &data, size);
return size;
}
static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t offset, size_t size)
{
struct device *dev = kobj_to_dev(kobj);
struct netxen_adapter *adapter = dev_get_drvdata(dev);
u64 data;
int ret;
ret = netxen_sysfs_validate_mem(adapter, offset, size);
if (ret != 0)
return ret;
memcpy(&data, buf, size);
if (adapter->pci_mem_write(adapter, offset, data))
return -EIO;
return size;
}
static const struct bin_attribute bin_attr_crb = {
.attr = { .name = "crb", .mode = 0644 },
.size = 0,
.read = netxen_sysfs_read_crb,
.write = netxen_sysfs_write_crb,
};
static const struct bin_attribute bin_attr_mem = {
.attr = { .name = "mem", .mode = 0644 },
.size = 0,
.read = netxen_sysfs_read_mem,
.write = netxen_sysfs_write_mem,
};
static ssize_t
netxen_sysfs_read_dimm(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t offset, size_t size)
{
struct device *dev = kobj_to_dev(kobj);
struct netxen_adapter *adapter = dev_get_drvdata(dev);
struct net_device *netdev = adapter->netdev;
struct netxen_dimm_cfg dimm;
u8 dw, rows, cols, banks, ranks;
u32 val;
if (size < attr->size) {
netdev_err(netdev, "Invalid size\n");
return -EINVAL;
}
memset(&dimm, 0, sizeof(struct netxen_dimm_cfg));
val = NXRD32(adapter, NETXEN_DIMM_CAPABILITY);
/* Checks if DIMM info is valid. */
if (val & NETXEN_DIMM_VALID_FLAG) {
netdev_err(netdev, "Invalid DIMM flag\n");
dimm.presence = 0xff;
goto out;
}
rows = NETXEN_DIMM_NUMROWS(val);
cols = NETXEN_DIMM_NUMCOLS(val);
ranks = NETXEN_DIMM_NUMRANKS(val);
banks = NETXEN_DIMM_NUMBANKS(val);
dw = NETXEN_DIMM_DATAWIDTH(val);
dimm.presence = (val & NETXEN_DIMM_PRESENT);
/* Checks if DIMM info is present. */
if (!dimm.presence) {
netdev_err(netdev, "DIMM not present\n");
goto out;
}
dimm.dimm_type = NETXEN_DIMM_TYPE(val);
switch (dimm.dimm_type) {
case NETXEN_DIMM_TYPE_RDIMM:
case NETXEN_DIMM_TYPE_UDIMM:
case NETXEN_DIMM_TYPE_SO_DIMM:
case NETXEN_DIMM_TYPE_Micro_DIMM:
case NETXEN_DIMM_TYPE_Mini_RDIMM:
case NETXEN_DIMM_TYPE_Mini_UDIMM:
break;
default:
netdev_err(netdev, "Invalid DIMM type %x\n", dimm.dimm_type);
goto out;
}
if (val & NETXEN_DIMM_MEMTYPE_DDR2_SDRAM)
dimm.mem_type = NETXEN_DIMM_MEM_DDR2_SDRAM;
else
dimm.mem_type = NETXEN_DIMM_MEMTYPE(val);
if (val & NETXEN_DIMM_SIZE) {
dimm.size = NETXEN_DIMM_STD_MEM_SIZE;
goto out;
}
if (!rows) {
netdev_err(netdev, "Invalid no of rows %x\n", rows);
goto out;
}
if (!cols) {
netdev_err(netdev, "Invalid no of columns %x\n", cols);
goto out;
}
if (!banks) {
netdev_err(netdev, "Invalid no of banks %x\n", banks);
goto out;
}
ranks += 1;
switch (dw) {
case 0x0:
dw = 32;
break;
case 0x1:
dw = 33;
break;
case 0x2:
dw = 36;
break;
case 0x3:
dw = 64;
break;
case 0x4:
dw = 72;
break;
case 0x5:
dw = 80;
break;
case 0x6:
dw = 128;
break;
case 0x7:
dw = 144;
break;
default:
netdev_err(netdev, "Invalid data-width %x\n", dw);
goto out;
}
dimm.size = ((1 << rows) * (1 << cols) * dw * banks * ranks) / 8;
/* Size returned in MB. */
dimm.size = (dimm.size) / 0x100000;
out:
memcpy(buf, &dimm, sizeof(struct netxen_dimm_cfg));
return sizeof(struct netxen_dimm_cfg);
}
static const struct bin_attribute bin_attr_dimm = {
.attr = { .name = "dimm", .mode = 0644 },
.size = sizeof(struct netxen_dimm_cfg),
.read = netxen_sysfs_read_dimm,
};
static void
netxen_create_sysfs_entries(struct netxen_adapter *adapter)
{
struct device *dev = &adapter->pdev->dev;
if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
/* bridged_mode control */
if (device_create_file(dev, &dev_attr_bridged_mode)) {
dev_warn(dev,
"failed to create bridged_mode sysfs entry\n");
}
}
}
static void
netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
{
struct device *dev = &adapter->pdev->dev;
if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
device_remove_file(dev, &dev_attr_bridged_mode);
}
static void
netxen_create_diag_entries(struct netxen_adapter *adapter)
{
struct pci_dev *pdev = adapter->pdev;
struct device *dev;
dev = &pdev->dev;
if (device_create_file(dev, &dev_attr_diag_mode))
dev_info(dev, "failed to create diag_mode sysfs entry\n");
if (device_create_bin_file(dev, &bin_attr_crb))
dev_info(dev, "failed to create crb sysfs entry\n");
if (device_create_bin_file(dev, &bin_attr_mem))
dev_info(dev, "failed to create mem sysfs entry\n");
if (device_create_bin_file(dev, &bin_attr_dimm))
dev_info(dev, "failed to create dimm sysfs entry\n");
}
static void
netxen_remove_diag_entries(struct netxen_adapter *adapter)
{
struct pci_dev *pdev = adapter->pdev;
struct device *dev = &pdev->dev;
device_remove_file(dev, &dev_attr_diag_mode);
device_remove_bin_file(dev, &bin_attr_crb);
device_remove_bin_file(dev, &bin_attr_mem);
device_remove_bin_file(dev, &bin_attr_dimm);
}
#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 void
netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
{
struct nx_ip_list *cur, *tmp_cur;
list_for_each_entry_safe(cur, tmp_cur, &adapter->ip_list, list) {
if (master) {
if (cur->master) {
netxen_config_ipaddr(adapter, cur->ip_addr,
NX_IP_DOWN);
list_del(&cur->list);
kfree(cur);
}
} else {
netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN);
list_del(&cur->list);
kfree(cur);
}
}
}
static bool
netxen_list_config_ip(struct netxen_adapter *adapter,
struct in_ifaddr *ifa, unsigned long event)
{
struct net_device *dev;
struct nx_ip_list *cur, *tmp_cur;
struct list_head *head;
bool ret = false;
dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
if (dev == NULL)
goto out;
switch (event) {
case NX_IP_UP:
list_for_each(head, &adapter->ip_list) {
cur = list_entry(head, struct nx_ip_list, list);
if (cur->ip_addr == ifa->ifa_address)
goto out;
}
cur = kzalloc(sizeof(struct nx_ip_list), GFP_ATOMIC);
if (cur == NULL)
goto out;
if (is_vlan_dev(dev))
dev = vlan_dev_real_dev(dev);
cur->master = !!netif_is_bond_master(dev);
cur->ip_addr = ifa->ifa_address;
list_add_tail(&cur->list, &adapter->ip_list);
netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
ret = true;
break;
case NX_IP_DOWN:
list_for_each_entry_safe(cur, tmp_cur,
&adapter->ip_list, list) {
if (cur->ip_addr == ifa->ifa_address) {
list_del(&cur->list);
kfree(cur);
netxen_config_ipaddr(adapter, ifa->ifa_address,
NX_IP_DOWN);
ret = true;
break;
}
}
}
out:
return ret;
}
static void
netxen_config_indev_addr(struct netxen_adapter *adapter,
struct net_device *dev, unsigned long event)
{
struct in_device *indev;
struct in_ifaddr *ifa;
if (!netxen_destip_supported(adapter))
return;
indev = in_dev_get(dev);
if (!indev)
return;
rcu_read_lock();
in_dev_for_each_ifa_rcu(ifa, indev) {
switch (event) {
case NETDEV_UP:
netxen_list_config_ip(adapter, ifa, NX_IP_UP);
break;
case NETDEV_DOWN:
netxen_list_config_ip(adapter, ifa, NX_IP_DOWN);
break;
default:
break;
}
}
rcu_read_unlock();
in_dev_put(indev);
}
static void
netxen_restore_indev_addr(struct net_device *netdev, unsigned long event)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
struct nx_ip_list *pos, *tmp_pos;
unsigned long ip_event;
ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
netxen_config_indev_addr(adapter, netdev, event);
list_for_each_entry_safe(pos, tmp_pos, &adapter->ip_list, list) {
netxen_config_ipaddr(adapter, pos->ip_addr, ip_event);
}
}
static inline bool
netxen_config_checkdev(struct net_device *dev)
{
struct netxen_adapter *adapter;
if (!is_netxen_netdev(dev))
return false;
adapter = netdev_priv(dev);
if (!adapter)
return false;
if (!netxen_destip_supported(adapter))
return false;
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
return false;
return true;
}
/**
* netxen_config_master - configure addresses based on master
* @dev: netxen device
* @event: netdev event
*/
static void netxen_config_master(struct net_device *dev, unsigned long event)
{
struct net_device *master, *slave;
struct netxen_adapter *adapter = netdev_priv(dev);
rcu_read_lock();
master = netdev_master_upper_dev_get_rcu(dev);
/*
* This is the case where the netxen nic is being
* enslaved and is dev_open()ed in bond_enslave()
* Now we should program the bond's (and its vlans')
* addresses in the netxen NIC.
*/
if (master && netif_is_bond_master(master) &&
!netif_is_bond_slave(dev)) {
netxen_config_indev_addr(adapter, master, event);
for_each_netdev_rcu(&init_net, slave)
if (is_vlan_dev(slave) &&
vlan_dev_real_dev(slave) == master)
netxen_config_indev_addr(adapter, slave, event);
}
rcu_read_unlock();
/*
* This is the case where the netxen nic is being
* released and is dev_close()ed in bond_release()
* just before IFF_BONDING is stripped.
*/
if (!master && dev->priv_flags & IFF_BONDING)
netxen_free_ip_list(adapter, true);
}
static int netxen_netdev_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct netxen_adapter *adapter;
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct net_device *orig_dev = dev;
struct net_device *slave;
recheck:
if (dev == NULL)
goto done;
if (is_vlan_dev(dev)) {
dev = vlan_dev_real_dev(dev);
goto recheck;
}
if (event == NETDEV_UP || event == NETDEV_DOWN) {
/* If this is a bonding device, look for netxen-based slaves*/
if (netif_is_bond_master(dev)) {
rcu_read_lock();
for_each_netdev_in_bond_rcu(dev, slave) {
if (!netxen_config_checkdev(slave))
continue;
adapter = netdev_priv(slave);
netxen_config_indev_addr(adapter,
orig_dev, event);
}
rcu_read_unlock();
} else {
if (!netxen_config_checkdev(dev))
goto done;
adapter = netdev_priv(dev);
/* Act only if the actual netxen is the target */
if (orig_dev == dev)
netxen_config_master(dev, event);
netxen_config_indev_addr(adapter, orig_dev, event);
}
}
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, *slave;
struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
unsigned long ip_event;
dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
recheck:
if (dev == NULL)
goto done;
if (is_vlan_dev(dev)) {
dev = vlan_dev_real_dev(dev);
goto recheck;
}
if (event == NETDEV_UP || event == NETDEV_DOWN) {
/* If this is a bonding device, look for netxen-based slaves*/
if (netif_is_bond_master(dev)) {
rcu_read_lock();
for_each_netdev_in_bond_rcu(dev, slave) {
if (!netxen_config_checkdev(slave))
continue;
adapter = netdev_priv(slave);
netxen_list_config_ip(adapter, ifa, ip_event);
}
rcu_read_unlock();
} else {
if (!netxen_config_checkdev(dev))
goto done;
adapter = netdev_priv(dev);
netxen_list_config_ip(adapter, ifa, ip_event);
}
}
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,
};
#else
static void
netxen_restore_indev_addr(struct net_device *dev, unsigned long event)
{ }
static void
netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
{ }
#endif
static const struct pci_error_handlers netxen_err_handler = {
.error_detected = netxen_io_error_detected,
.slot_reset = netxen_io_slot_reset,
};
static SIMPLE_DEV_PM_OPS(netxen_nic_pm_ops,
netxen_nic_suspend,
netxen_nic_resume);
static struct pci_driver netxen_driver = {
.name = netxen_nic_driver_name,
.id_table = netxen_pci_tbl,
.probe = netxen_nic_probe,
.remove = netxen_nic_remove,
.driver.pm = &netxen_nic_pm_ops,
.shutdown = netxen_nic_shutdown,
.err_handler = &netxen_err_handler
};
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);