diff options
Diffstat (limited to 'drivers/net/qlcnic/qlcnic_main.c')
| -rw-r--r-- | drivers/net/qlcnic/qlcnic_main.c | 2604 |
1 files changed, 2604 insertions, 0 deletions
diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c new file mode 100644 index 00000000000..1698b6a68ed --- /dev/null +++ b/drivers/net/qlcnic/qlcnic_main.c @@ -0,0 +1,2604 @@ +/* + * Copyright (C) 2009 - QLogic Corporation. + * 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 "COPYING". + * + */ + +#include <linux/vmalloc.h> +#include <linux/interrupt.h> + +#include "qlcnic.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> + +MODULE_DESCRIPTION("QLogic 10 GbE Converged Ethernet Driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(QLCNIC_LINUX_VERSIONID); +MODULE_FIRMWARE(QLCNIC_UNIFIED_ROMIMAGE_NAME); + +char qlcnic_driver_name[] = "qlcnic"; +static const char qlcnic_driver_string[] = "QLogic Converged Ethernet Driver v" + QLCNIC_LINUX_VERSIONID; + +static int port_mode = QLCNIC_PORT_MODE_AUTO_NEG; + +/* Default to restricted 1G auto-neg mode */ +static int wol_port_mode = 5; + +static int use_msi = 1; +module_param(use_msi, int, 0644); +MODULE_PARM_DESC(use_msi, "MSI interrupt (0=disabled, 1=enabled"); + +static int use_msi_x = 1; +module_param(use_msi_x, int, 0644); +MODULE_PARM_DESC(use_msi_x, "MSI-X interrupt (0=disabled, 1=enabled"); + +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 __devinit qlcnic_probe(struct pci_dev *pdev, + const struct pci_device_id *ent); +static void __devexit qlcnic_remove(struct pci_dev *pdev); +static int qlcnic_open(struct net_device *netdev); +static int qlcnic_close(struct net_device *netdev); +static netdev_tx_t qlcnic_xmit_frame(struct sk_buff *, + struct net_device *); +static void qlcnic_tx_timeout(struct net_device *netdev); +static void qlcnic_tx_timeout_task(struct work_struct *work); +static void qlcnic_attach_work(struct work_struct *work); +static void qlcnic_fwinit_work(struct work_struct *work); +static void qlcnic_fw_poll_work(struct work_struct *work); +static void qlcnic_schedule_work(struct qlcnic_adapter *adapter, + work_func_t func, int delay); +static void qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter); +static int qlcnic_poll(struct napi_struct *napi, int budget); +#ifdef CONFIG_NET_POLL_CONTROLLER +static void qlcnic_poll_controller(struct net_device *netdev); +#endif + +static void qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter); +static void qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter); +static void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter); +static void qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter); + +static void qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter); +static int qlcnic_can_start_firmware(struct qlcnic_adapter *adapter); + +static irqreturn_t qlcnic_intr(int irq, void *data); +static irqreturn_t qlcnic_msi_intr(int irq, void *data); +static irqreturn_t qlcnic_msix_intr(int irq, void *data); + +static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev); +static void qlcnic_config_indev_addr(struct net_device *dev, unsigned long); + +/* PCI Device ID Table */ +#define ENTRY(device) \ + {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, (device)), \ + .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0} + +#define PCI_DEVICE_ID_QLOGIC_QLE824X 0x8020 + +static const struct pci_device_id qlcnic_pci_tbl[] __devinitdata = { + ENTRY(PCI_DEVICE_ID_QLOGIC_QLE824X), + {0,} +}; + +MODULE_DEVICE_TABLE(pci, qlcnic_pci_tbl); + + +void +qlcnic_update_cmd_producer(struct qlcnic_adapter *adapter, + struct qlcnic_host_tx_ring *tx_ring) +{ + writel(tx_ring->producer, tx_ring->crb_cmd_producer); + + if (qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH) { + netif_stop_queue(adapter->netdev); + smp_mb(); + } +} + +static const u32 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 const +struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG; + +static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring) +{ + writel(0, sds_ring->crb_intr_mask); +} + +static inline void qlcnic_enable_int(struct qlcnic_host_sds_ring *sds_ring) +{ + struct qlcnic_adapter *adapter = sds_ring->adapter; + + writel(0x1, sds_ring->crb_intr_mask); + + if (!QLCNIC_IS_MSI_FAMILY(adapter)) + writel(0xfbff, adapter->tgt_mask_reg); +} + +static int +qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count) +{ + int size = sizeof(struct qlcnic_host_sds_ring) * count; + + recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL); + + return (recv_ctx->sds_rings == NULL); +} + +static void +qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx) +{ + if (recv_ctx->sds_rings != NULL) + kfree(recv_ctx->sds_rings); + + recv_ctx->sds_rings = NULL; +} + +static int +qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev) +{ + int ring; + struct qlcnic_host_sds_ring *sds_ring; + struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx; + + if (qlcnic_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, + qlcnic_poll, QLCNIC_NETDEV_WEIGHT); + } + + return 0; +} + +static void +qlcnic_napi_del(struct qlcnic_adapter *adapter) +{ + int ring; + struct qlcnic_host_sds_ring *sds_ring; + struct qlcnic_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); + } + + qlcnic_free_sds_rings(&adapter->recv_ctx); +} + +static void +qlcnic_napi_enable(struct qlcnic_adapter *adapter) +{ + int ring; + struct qlcnic_host_sds_ring *sds_ring; + struct qlcnic_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); + qlcnic_enable_int(sds_ring); + } +} + +static void +qlcnic_napi_disable(struct qlcnic_adapter *adapter) +{ + int ring; + struct qlcnic_host_sds_ring *sds_ring; + struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx; + + for (ring = 0; ring < adapter->max_sds_rings; ring++) { + sds_ring = &recv_ctx->sds_rings[ring]; + qlcnic_disable_int(sds_ring); + napi_synchronize(&sds_ring->napi); + napi_disable(&sds_ring->napi); + } +} + +static void qlcnic_clear_stats(struct qlcnic_adapter *adapter) +{ + memset(&adapter->stats, 0, sizeof(adapter->stats)); + return; +} + +static int qlcnic_set_dma_mask(struct qlcnic_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + u64 mask, cmask; + + adapter->pci_using_dac = 0; + + 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 +qlcnic_update_dma_mask(struct qlcnic_adapter *adapter) +{ + int change, shift, err; + u64 mask, old_mask, old_cmask; + struct pci_dev *pdev = adapter->pdev; + + change = 0; + + shift = QLCRD32(adapter, CRB_DMA_SHIFT); + if (shift > 32) + return 0; + + if (shift > 9) + 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; + + 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 qlcnic_set_port_mode(struct qlcnic_adapter *adapter) +{ + u32 val, data; + + val = adapter->ahw.board_type; + if ((val == QLCNIC_BRDTYPE_P3_HMEZ) || + (val == QLCNIC_BRDTYPE_P3_XG_LOM)) { + if (port_mode == QLCNIC_PORT_MODE_802_3_AP) { + data = QLCNIC_PORT_MODE_802_3_AP; + QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data); + } else if (port_mode == QLCNIC_PORT_MODE_XG) { + data = QLCNIC_PORT_MODE_XG; + QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data); + } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_1G) { + data = QLCNIC_PORT_MODE_AUTO_NEG_1G; + QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data); + } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_XG) { + data = QLCNIC_PORT_MODE_AUTO_NEG_XG; + QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data); + } else { + data = QLCNIC_PORT_MODE_AUTO_NEG; + QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data); + } + + if ((wol_port_mode != QLCNIC_PORT_MODE_802_3_AP) && + (wol_port_mode != QLCNIC_PORT_MODE_XG) && + (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_1G) && + (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_XG)) { + wol_port_mode = QLCNIC_PORT_MODE_AUTO_NEG; + } + QLCWR32(adapter, QLCNIC_WOL_PORT_MODE, wol_port_mode); + } +} + +static void qlcnic_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 qlcnic_init_msix_entries(struct qlcnic_adapter *adapter, int count) +{ + int i; + + for (i = 0; i < count; i++) + adapter->msix_entries[i].entry = i; +} + +static int +qlcnic_read_mac_addr(struct qlcnic_adapter *adapter) +{ + int i; + unsigned char *p; + u64 mac_addr; + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + + if (qlcnic_get_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); + memcpy(adapter->mac_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; +} + +static int qlcnic_set_mac(struct net_device *netdev, void *p) +{ + struct qlcnic_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); + qlcnic_napi_disable(adapter); + } + + memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len); + memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); + qlcnic_set_multi(adapter->netdev); + + if (netif_running(netdev)) { + netif_device_attach(netdev); + qlcnic_napi_enable(adapter); + } + return 0; +} + +static const struct net_device_ops qlcnic_netdev_ops = { + .ndo_open = qlcnic_open, + .ndo_stop = qlcnic_close, + .ndo_start_xmit = qlcnic_xmit_frame, + .ndo_get_stats = qlcnic_get_stats, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_multicast_list = qlcnic_set_multi, + .ndo_set_mac_address = qlcnic_set_mac, + .ndo_change_mtu = qlcnic_change_mtu, + .ndo_tx_timeout = qlcnic_tx_timeout, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = qlcnic_poll_controller, +#endif +}; + +static void +qlcnic_setup_intr(struct qlcnic_adapter *adapter) +{ + const struct qlcnic_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 &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED); + + legacy_intrp = &legacy_intr[adapter->ahw.pci_func]; + + adapter->int_vec_bit = legacy_intrp->int_vec_bit; + adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter, + legacy_intrp->tgt_status_reg); + adapter->tgt_mask_reg = qlcnic_get_ioaddr(adapter, + legacy_intrp->tgt_mask_reg); + adapter->isr_int_vec = qlcnic_get_ioaddr(adapter, ISR_INT_VECTOR); + + adapter->crb_int_state_reg = qlcnic_get_ioaddr(adapter, + ISR_INT_STATE_REG); + + qlcnic_set_msix_bit(pdev, 0); + + if (adapter->msix_supported) { + + qlcnic_init_msix_entries(adapter, num_msix); + err = pci_enable_msix(pdev, adapter->msix_entries, num_msix); + if (err == 0) { + adapter->flags |= QLCNIC_MSIX_ENABLED; + qlcnic_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 |= QLCNIC_MSI_ENABLED; + adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter, + 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 +qlcnic_teardown_intr(struct qlcnic_adapter *adapter) +{ + if (adapter->flags & QLCNIC_MSIX_ENABLED) + pci_disable_msix(adapter->pdev); + if (adapter->flags & QLCNIC_MSI_ENABLED) + pci_disable_msi(adapter->pdev); +} + +static void +qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter) +{ + if (adapter->ahw.pci_base0 != NULL) + iounmap(adapter->ahw.pci_base0); +} + +static int +qlcnic_setup_pci_map(struct qlcnic_adapter *adapter) +{ + void __iomem *mem_ptr0 = NULL; + resource_size_t mem_base; + unsigned long mem_len, pci_len0 = 0; + + struct pci_dev *pdev = adapter->pdev; + int pci_func = adapter->ahw.pci_func; + + /* + * 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); + + if (mem_len == QLCNIC_PCI_2MB_SIZE) { + + 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; + } 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.ocm_win_crb = qlcnic_get_ioaddr(adapter, + QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func))); + + return 0; +} + +static void get_brd_name(struct qlcnic_adapter *adapter, char *name) +{ + struct pci_dev *pdev = adapter->pdev; + int i, found = 0; + + for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) { + if (qlcnic_boards[i].vendor == pdev->vendor && + qlcnic_boards[i].device == pdev->device && + qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor && + qlcnic_boards[i].sub_device == pdev->subsystem_device) { + strcpy(name, qlcnic_boards[i].short_name); + found = 1; + break; + } + + } + + if (!found) + name = "Unknown"; +} + +static void +qlcnic_check_options(struct qlcnic_adapter *adapter) +{ + u32 fw_major, fw_minor, fw_build; + char brd_name[QLCNIC_MAX_BOARD_NAME_LEN]; + char serial_num[32]; + int i, offset, val; + int *ptr32; + struct pci_dev *pdev = adapter->pdev; + + adapter->driver_mismatch = 0; + + ptr32 = (int *)&serial_num; + offset = QLCNIC_FW_SERIAL_NUM_OFFSET; + for (i = 0; i < 8; i++) { + if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) { + 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 = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR); + fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR); + fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB); + + adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build); + + if (adapter->portnum == 0) { + get_brd_name(adapter, brd_name); + + pr_info("%s: %s Board Chip rev 0x%x\n", + module_name(THIS_MODULE), + brd_name, adapter->ahw.revision_id); + } + + if (adapter->fw_version < QLCNIC_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; + } + + i = QLCRD32(adapter, QLCNIC_SRE_MISC); + adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0; + + dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n", + fw_major, fw_minor, fw_build, + adapter->ahw.cut_through ? "cut-through" : "legacy"); + + if (adapter->fw_version >= QLCNIC_VERSION_CODE(4, 0, 222)) + adapter->capabilities = QLCRD32(adapter, CRB_FW_CAPABILITIES_1); + + adapter->flags &= ~QLCNIC_LRO_ENABLED; + + if (adapter->ahw.port_type == QLCNIC_XGBE) { + adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G; + adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G; + } else if (adapter->ahw.port_type == QLCNIC_GBE) { + adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G; + adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G; + } + + adapter->msix_supported = !!use_msi_x; + adapter->rss_supported = !!use_msi_x; + + adapter->num_txd = MAX_CMD_DESCRIPTORS; + + adapter->num_lro_rxd = 0; + adapter->max_rds_rings = 2; +} + +static int +qlcnic_start_firmware(struct qlcnic_adapter *adapter) +{ + int val, err, first_boot; + + err = qlcnic_set_dma_mask(adapter); + if (err) + return err; + + if (!qlcnic_can_start_firmware(adapter)) + goto wait_init; + + first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc)); + if (first_boot == 0x55555555) + /* This is the first boot after power up */ + QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC); + + qlcnic_request_firmware(adapter); + + err = qlcnic_need_fw_reset(adapter); + if (err < 0) + goto err_out; + if (err == 0) + goto wait_init; + + if (first_boot != 0x55555555) { + QLCWR32(adapter, CRB_CMDPEG_STATE, 0); + qlcnic_pinit_from_rom(adapter); + msleep(1); + } + + QLCWR32(adapter, CRB_DMA_SHIFT, 0x55555555); + QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0); + QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0); + + qlcnic_set_port_mode(adapter); + + err = qlcnic_load_firmware(adapter); + if (err) + goto err_out; + + qlcnic_release_firmware(adapter); + + val = (_QLCNIC_LINUX_MAJOR << 16) + | ((_QLCNIC_LINUX_MINOR << 8)) + | (_QLCNIC_LINUX_SUBVERSION); + QLCWR32(adapter, CRB_DRIVER_VERSION, val); + +wait_init: + /* Handshake with the card before we register the devices. */ + err = qlcnic_phantom_init(adapter); + if (err) + goto err_out; + + QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY); + + qlcnic_update_dma_mask(adapter); + + qlcnic_check_options(adapter); + + adapter->need_fw_reset = 0; + + /* fall through and release firmware */ + +err_out: + qlcnic_release_firmware(adapter); + return err; +} + +static int +qlcnic_request_irq(struct qlcnic_adapter *adapter) +{ + irq_handler_t handler; + struct qlcnic_host_sds_ring *sds_ring; + int err, ring; + + unsigned long flags = 0; + struct net_device *netdev = adapter->netdev; + struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx; + + if (adapter->flags & QLCNIC_MSIX_ENABLED) + handler = qlcnic_msix_intr; + else if (adapter->flags & QLCNIC_MSI_ENABLED) + handler = qlcnic_msi_intr; + else { + flags |= IRQF_SHARED; + handler = qlcnic_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 +qlcnic_free_irq(struct qlcnic_adapter *adapter) +{ + int ring; + struct qlcnic_host_sds_ring *sds_ring; + + struct qlcnic_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 +qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter) +{ + adapter->coal.flags = QLCNIC_INTR_DEFAULT; + adapter->coal.normal.data.rx_time_us = + QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US; + adapter->coal.normal.data.rx_packets = + QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS; + adapter->coal.normal.data.tx_time_us = + QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US; + adapter->coal.normal.data.tx_packets = + QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS; +} + +static int +__qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev) +{ + if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) + return -EIO; + + qlcnic_set_multi(netdev); + qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu); + + adapter->ahw.linkup = 0; + + if (adapter->max_sds_rings > 1) + qlcnic_config_rss(adapter, 1); + + qlcnic_config_intr_coalesce(adapter); + + if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO) + qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED); + + qlcnic_napi_enable(adapter); + + qlcnic_linkevent_request(adapter, 1); + + set_bit(__QLCNIC_DEV_UP, &adapter->state); + return 0; +} + +/* Usage: During resume and firmware recovery module.*/ + +static int +qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev) +{ + int err = 0; + + rtnl_lock(); + if (netif_running(netdev)) + err = __qlcnic_up(adapter, netdev); + rtnl_unlock(); + + return err; +} + +static void +__qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev) +{ + if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) + return; + + if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state)) + return; + + smp_mb(); + spin_lock(&adapter->tx_clean_lock); + netif_carrier_off(netdev); + netif_tx_disable(netdev); + + qlcnic_free_mac_list(adapter); + + qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE); + + qlcnic_napi_disable(adapter); + + qlcnic_release_tx_buffers(adapter); + spin_unlock(&adapter->tx_clean_lock); +} + +/* Usage: During suspend and firmware recovery module */ + +static void +qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev) +{ + rtnl_lock(); + if (netif_running(netdev)) + __qlcnic_down(adapter, netdev); + rtnl_unlock(); + +} + +static int +qlcnic_attach(struct qlcnic_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + int err, ring; + struct qlcnic_host_rds_ring *rds_ring; + + if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) + return 0; + + err = qlcnic_init_firmware(adapter); + if (err) + return err; + + err = qlcnic_napi_add(adapter, netdev); + if (err) + return err; + + err = qlcnic_alloc_sw_resources(adapter); + if (err) { + dev_err(&pdev->dev, "Error in setting sw resources\n"); + return err; + } + + err = qlcnic_alloc_hw_resources(adapter); + if (err) { + dev_err(&pdev->dev, "Error in setting hw resources\n"); + goto err_out_free_sw; + } + + + for (ring = 0; ring < adapter->max_rds_rings; ring++) { + rds_ring = &adapter->recv_ctx.rds_rings[ring]; + qlcnic_post_rx_buffers(adapter, ring, rds_ring); + } + + err = qlcnic_request_irq(adapter); + if (err) { + dev_err(&pdev->dev, "failed to setup interrupt\n"); + goto err_out_free_rxbuf; + } + + qlcnic_init_coalesce_defaults(adapter); + + qlcnic_create_sysfs_entries(adapter); + + adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC; + return 0; + +err_out_free_rxbuf: + qlcnic_release_rx_buffers(adapter); + qlcnic_free_hw_resources(adapter); +err_out_free_sw: + qlcnic_free_sw_resources(adapter); + return err; +} + +static void +qlcnic_detach(struct qlcnic_adapter *adapter) +{ + if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) + return; + + qlcnic_remove_sysfs_entries(adapter); + + qlcnic_free_hw_resources(adapter); + qlcnic_release_rx_buffers(adapter); + qlcnic_free_irq(adapter); + qlcnic_napi_del(adapter); + qlcnic_free_sw_resources(adapter); + + adapter->is_up = 0; +} + +int +qlcnic_reset_context(struct qlcnic_adapter *adapter) +{ + int err = 0; + struct net_device *netdev = adapter->netdev; + + if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) + return -EBUSY; + + if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) { + + netif_device_detach(netdev); + + if (netif_running(netdev)) + __qlcnic_down(adapter, netdev); + + qlcnic_detach(adapter); + + if (netif_running(netdev)) { + err = qlcnic_attach(adapter); + if (!err) + err = __qlcnic_up(adapter, netdev); + + if (err) + goto done; + } + + netif_device_attach(netdev); + } + +done: + clear_bit(__QLCNIC_RESETTING, &adapter->state); + return err; +} + +static int +qlcnic_setup_netdev(struct qlcnic_adapter *adapter, + struct net_device *netdev) +{ + int err; + struct pci_dev *pdev = adapter->pdev; + + adapter->rx_csum = 1; + adapter->mc_enabled = 0; + adapter->max_mc_count = 38; + + netdev->netdev_ops = &qlcnic_netdev_ops; + netdev->watchdog_timeo = 2*HZ; + + qlcnic_change_mtu(netdev, netdev->mtu); + + SET_ETHTOOL_OPS(netdev, &qlcnic_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); + + 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 & QLCNIC_FW_CAPABILITY_FVLANTX) + netdev->features |= (NETIF_F_HW_VLAN_TX); + + if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO) + netdev->features |= NETIF_F_LRO; + + netdev->irq = adapter->msix_entries[0].vector; + + INIT_WORK(&adapter->tx_timeout_task, qlcnic_tx_timeout_task); + + if (qlcnic_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 +qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct net_device *netdev = NULL; + struct qlcnic_adapter *adapter = NULL; + int err; + int pci_func_id = PCI_FUNC(pdev->devfn); + uint8_t revision_id; + + err = pci_enable_device(pdev); + if (err) + return err; + + if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { + err = -ENODEV; + goto err_out_disable_pdev; + } + + err = pci_request_regions(pdev, qlcnic_driver_name); + if (err) + goto err_out_disable_pdev; + + pci_set_master(pdev); + + netdev = alloc_etherdev(sizeof(struct qlcnic_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; + + rwlock_init(&adapter->ahw.crb_lock); + mutex_init(&adapter->ahw.mem_lock); + + spin_lock_init(&adapter->tx_clean_lock); + INIT_LIST_HEAD(&adapter->mac_list); + + err = qlcnic_setup_pci_map(adapter); + if (err) + goto err_out_free_netdev; + + /* This will be reset for mezz cards */ + adapter->portnum = pci_func_id; + + err = qlcnic_get_board_info(adapter); + if (err) { + dev_err(&pdev->dev, "Error getting board config info.\n"); + goto err_out_iounmap; + } + + + err = qlcnic_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; + + qlcnic_clear_stats(adapter); + + qlcnic_setup_intr(adapter); + + err = qlcnic_setup_netdev(adapter, netdev); + if (err) + goto err_out_disable_msi; + + pci_set_drvdata(pdev, adapter); + + qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY); + + switch (adapter->ahw.port_type) { + case QLCNIC_GBE: + dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n", + adapter->netdev->name); + break; + case QLCNIC_XGBE: + dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n", + adapter->netdev->name); + break; + } + + qlcnic_create_diag_entries(adapter); + + return 0; + +err_out_disable_msi: + qlcnic_teardown_intr(adapter); + +err_out_decr_ref: + qlcnic_clr_all_drv_state(adapter); + +err_out_iounmap: + qlcnic_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 qlcnic_remove(struct pci_dev *pdev) +{ + struct qlcnic_adapter *adapter; + struct net_device *netdev; + + adapter = pci_get_drvdata(pdev); + if (adapter == NULL) + return; + + netdev = adapter->netdev; + + qlcnic_cancel_fw_work(adapter); + + unregister_netdev(netdev); + + cancel_work_sync(&adapter->tx_timeout_task); + + qlcnic_detach(adapter); + + qlcnic_clr_all_drv_state(adapter); + + clear_bit(__QLCNIC_RESETTING, &adapter->state); + + qlcnic_teardown_intr(adapter); + + qlcnic_remove_diag_entries(adapter); + + qlcnic_cleanup_pci_map(adapter); + + qlcnic_release_firmware(adapter); + + pci_release_regions(pdev); + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); + + free_netdev(netdev); +} +static int __qlcnic_shutdown(struct pci_dev *pdev) +{ + struct qlcnic_adapter *adapter = pci_get_drvdata(pdev); + struct net_device *netdev = adapter->netdev; + int retval; + + netif_device_detach(netdev); + + qlcnic_cancel_fw_work(adapter); + + if (netif_running(netdev)) + qlcnic_down(adapter, netdev); + + cancel_work_sync(&adapter->tx_timeout_task); + + qlcnic_detach(adapter); + + qlcnic_clr_all_drv_state(adapter); + + clear_bit(__QLCNIC_RESETTING, &adapter->state); + + retval = pci_save_state(pdev); + if (retval) + return retval; + + if (qlcnic_wol_supported(adapter)) { + pci_enable_wake(pdev, PCI_D3cold, 1); + pci_enable_wake(pdev, PCI_D3hot, 1); + } + + return 0; +} + +static void qlcnic_shutdown(struct pci_dev *pdev) +{ + if (__qlcnic_shutdown(pdev)) + return; + + pci_disable_device(pdev); +} + +#ifdef CONFIG_PM +static int +qlcnic_suspend(struct pci_dev *pdev, pm_message_t state) +{ + int retval; + + retval = __qlcnic_shutdown(pdev); + if (retval) + return retval; + + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + return 0; +} + +static int +qlcnic_resume(struct pci_dev *pdev) +{ + struct qlcnic_adapter *adapter = pci_get_drvdata(pdev); + struct net_device *netdev = adapter->netdev; + int err; + + err = pci_enable_device(pdev); + if (err) + return err; + + pci_set_power_state(pdev, PCI_D0); + pci_set_master(pdev); + pci_restore_state(pdev); + + adapter->ahw.crb_win = -1; + adapter->ahw.ocm_win = -1; + + err = qlcnic_start_firmware(adapter); + if (err) { + dev_err(&pdev->dev, "failed to start firmware\n"); + return err; + } + + if (netif_running(netdev)) { + err = qlcnic_attach(adapter); + if (err) + goto err_out; + + err = qlcnic_up(adapter, netdev); + if (err) + goto err_out_detach; + + + qlcnic_config_indev_addr(netdev, NETDEV_UP); + } + + netif_device_attach(netdev); + qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY); + return 0; + +err_out_detach: + qlcnic_detach(adapter); +err_out: + qlcnic_clr_all_drv_state(adapter); + return err; +} +#endif + +static int qlcnic_open(struct net_device *netdev) +{ + struct qlcnic_adapter *adapter = netdev_priv(netdev); + int err; + + if (adapter->driver_mismatch) + return -EIO; + + err = qlcnic_attach(adapter); + if (err) + return err; + + err = __qlcnic_up(adapter, netdev); + if (err) + goto err_out; + + netif_start_queue(netdev); + + return 0; + +err_out: + qlcnic_detach(adapter); + return err; +} + +/* + * qlcnic_close - Disables a network interface entry point + */ +static int qlcnic_close(struct net_device *netdev) +{ + struct qlcnic_adapter *adapter = netdev_priv(netdev); + + __qlcnic_down(adapter, netdev); + return 0; +} + +static void +qlcnic_tso_check(struct net_device *netdev, + struct qlcnic_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); + qlcnic_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); + qlcnic_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 +qlcnic_map_tx_skb(struct pci_dev *pdev, + struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf) +{ + struct qlcnic_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+1]; + 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 +qlcnic_clear_cmddesc(u64 *desc) +{ + desc[0] = 0ULL; + desc[2] = 0ULL; +} + +static netdev_tx_t +qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) +{ + struct qlcnic_adapter *adapter = netdev_priv(netdev); + struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring; + struct qlcnic_cmd_buffer *pbuf; + struct qlcnic_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 > qlcnic_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 (qlcnic_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]; + qlcnic_clear_cmddesc((u64 *)hwdesc); + + qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len); + qlcnic_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]; + qlcnic_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); + + qlcnic_tso_check(netdev, tx_ring, first_desc, skb); + + qlcnic_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 qlcnic_check_temp(struct qlcnic_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + u32 temp, temp_state, temp_val; + int rv = 0; + + temp = QLCRD32(adapter, CRB_TEMP_STATE); + + temp_state = qlcnic_get_temp_state(temp); + temp_val = qlcnic_get_temp_val(temp); + + if (temp_state == QLCNIC_TEMP_PANIC) { + dev_err(&netdev->dev, + "Device temperature %d degrees C exceeds" + " maximum allowed. Hardware has been shut down.\n", + temp_val); + rv = 1; + } else if (temp_state == QLCNIC_TEMP_WARN) { + if (adapter->temp == QLCNIC_TEMP_NORMAL) { + dev_err(&netdev->dev, + "Device temperature %d degrees C " + "exceeds operating range." + " Immediate action needed.\n", + temp_val); + } + } else { + if (adapter->temp == QLCNIC_TEMP_WARN) { + dev_info(&netdev->dev, + "Device temperature is now %d degrees C" + " in normal range.\n", temp_val); + } + } + adapter->temp = temp_state; + return rv; +} + +void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup) +{ + struct net_device *netdev = adapter->netdev; + + if (adapter->ahw.linkup && !linkup) { + dev_info(&netdev->dev, "NIC Link is down\n"); + adapter->ahw.linkup = 0; + if (netif_running(netdev)) { + netif_carrier_off(netdev); + netif_stop_queue(netdev); + } + } else if (!adapter->ahw.linkup && linkup) { + dev_info(&netdev->dev, "NIC Link is up\n"); + adapter->ahw.linkup = 1; + if (netif_running(netdev)) { + netif_carrier_on(netdev); + netif_wake_queue(netdev); + } + } +} + +static void qlcnic_tx_timeout(struct net_device *netdev) +{ + struct qlcnic_adapter *adapter = netdev_priv(netdev); + + if (test_bit(__QLCNIC_RESETTING, &adapter->state)) + return; + + dev_err(&netdev->dev, "transmit timeout, resetting.\n"); + schedule_work(&adapter->tx_timeout_task); +} + +static void qlcnic_tx_timeout_task(struct work_struct *work) +{ + struct qlcnic_adapter *adapter = + container_of(work, struct qlcnic_adapter, tx_timeout_task); + + if (!netif_running(adapter->netdev)) + return; + + if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) + return; + + if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS) + goto request_reset; + + clear_bit(__QLCNIC_RESETTING, &adapter->state); + if (!qlcnic_reset_context(adapter)) { + adapter->netdev->trans_start = jiffies; + return; + + /* context reset failed, fall through for fw reset */ + } + +request_reset: + adapter->need_fw_reset = 1; + clear_bit(__QLCNIC_RESETTING, &adapter->state); +} + +static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev) +{ + struct qlcnic_adapter *adapter = netdev_priv(netdev); + struct net_device_stats *stats = &netdev->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 qlcnic_intr(int irq, void *data) +{ + struct qlcnic_host_sds_ring *sds_ring = data; + struct qlcnic_adapter *adapter = sds_ring->adapter; + u32 status; + + status = readl(adapter->isr_int_vec); + + if (!(status & adapter->int_vec_bit)) + return IRQ_NONE; + + /* check interrupt state machine, to be sure */ + status = readl(adapter->crb_int_state_reg); + if (!ISR_LEGACY_INT_TRIGGERED(status)) + return IRQ_NONE; + + 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 qlcnic_msi_intr(int irq, void *data) +{ + struct qlcnic_host_sds_ring *sds_ring = data; + struct qlcnic_adapter *adapter = sds_ring->adapter; + + /* clear interrupt */ + writel(0xffffffff, adapter->tgt_status_reg); + + napi_schedule(&sds_ring->napi); + return IRQ_HANDLED; +} + +static irqreturn_t qlcnic_msix_intr(int irq, void *data) +{ + struct qlcnic_host_sds_ring *sds_ring = data; + + napi_schedule(&sds_ring->napi); + return IRQ_HANDLED; +} + +static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter) +{ + u32 sw_consumer, hw_consumer; + int count = 0, i; + struct qlcnic_cmd_buffer *buffer; + struct pci_dev *pdev = adapter->pdev; + struct net_device *netdev = adapter->netdev; + struct qlcnic_skb_frag *frag; + int done; + struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring; + + if (!spin_trylock(&adapter->tx_clean_lock)) + return 1; + + sw_consumer = tx_ring->sw_consumer; + hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer)); + + while (sw_consumer != hw_consumer) { + buffer = &tx_ring->cmd_buf_arr[sw_consumer]; + if (buffer->skb) { + frag = &buffer->frag_array[0]; + pci_unmap_single(pdev, frag->dma, frag->length, + PCI_DMA_TODEVICE); + frag->dma = 0ULL; + for (i = 1; i < buffer->frag_count; i++) { + frag++; + pci_unmap_page(pdev, frag->dma, frag->length, + PCI_DMA_TODEVICE); + frag->dma = 0ULL; + } + + adapter->stats.xmitfinished++; + dev_kfree_skb_any(buffer->skb); + buffer->skb = NULL; + } + + sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc); + if (++count >= MAX_STATUS_HANDLE) + break; + } + + if (count && netif_running(netdev)) { + tx_ring->sw_consumer = sw_consumer; + + smp_mb(); + + if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) { + __netif_tx_lock(tx_ring->txq, smp_processor_id()); + if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { + netif_wake_queue(netdev); + adapter->tx_timeo_cnt = 0; + } + __netif_tx_unlock(tx_ring->txq); + } + } + /* + * If everything is freed up to consumer then check if the ring is full + * If the ring is full then check if more needs to be freed and + * schedule the call back again. + * + * This happens when there are 2 CPUs. One could be freeing and the + * other filling it. If the ring is full when we get out of here and + * the card has already interrupted the host then the host can miss the + * interrupt. + * + * There is still a possible race condition and the host could miss an + * interrupt. The card has to take care of this. + */ + hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer)); + done = (sw_consumer == hw_consumer); + spin_unlock(&adapter->tx_clean_lock); + + return done; +} + +static int qlcnic_poll(struct napi_struct *napi, int budget) +{ + struct qlcnic_host_sds_ring *sds_ring = + container_of(napi, struct qlcnic_host_sds_ring, napi); + + struct qlcnic_adapter *adapter = sds_ring->adapter; + + int tx_complete; + int work_done; + + tx_complete = qlcnic_process_cmd_ring(adapter); + + work_done = qlcnic_process_rcv_ring(sds_ring, budget); + + if ((work_done < budget) && tx_complete) { + napi_complete(&sds_ring->napi); + if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) + qlcnic_enable_int(sds_ring); + } + + return work_done; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void qlcnic_poll_controller(struct net_device *netdev) +{ + struct qlcnic_adapter *adapter = netdev_priv(netdev); + disable_irq(adapter->irq); + qlcnic_intr(adapter->irq, adapter); + enable_irq(adapter->irq); +} +#endif + +static void +qlcnic_set_drv_state(struct qlcnic_adapter *adapter, int state) +{ + u32 val; + + WARN_ON(state != QLCNIC_DEV_NEED_RESET && + state != QLCNIC_DEV_NEED_QUISCENT); + + if (qlcnic_api_lock(adapter)) + return ; + + val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE); + + if (state == QLCNIC_DEV_NEED_RESET) + val |= ((u32)0x1 << (adapter->portnum * 4)); + else if (state == QLCNIC_DEV_NEED_QUISCENT) + val |= ((u32)0x1 << ((adapter->portnum * 4) + 1)); + + QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val); + + qlcnic_api_unlock(adapter); +} + +static void +qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter) +{ + u32 val; + + if (qlcnic_api_lock(adapter)) + goto err; + + val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT); + val &= ~((u32)0x1 << (adapter->portnum * 4)); + QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val); + + if (!(val & 0x11111111)) + QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD); + + val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE); + val &= ~((u32)0x3 << (adapter->portnum * 4)); + QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val); + + qlcnic_api_unlock(adapter); +err: + adapter->fw_fail_cnt = 0; + clear_bit(__QLCNIC_START_FW, &adapter->state); + clear_bit(__QLCNIC_RESETTING, &adapter->state); +} + +static int +qlcnic_check_drv_state(struct qlcnic_adapter *adapter) +{ + int act, state; + + state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE); + act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT); + + if (((state & 0x11111111) == (act & 0x11111111)) || + ((act & 0x11111111) == ((state >> 1) & 0x11111111))) + return 0; + else + return 1; +} + +static int +qlcnic_can_start_firmware(struct qlcnic_adapter *adapter) +{ + u32 val, prev_state; + int cnt = 0; + int portnum = adapter->portnum; + + if (qlcnic_api_lock(adapter)) + return -1; + + val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT); + if (!(val & ((int)0x1 << (portnum * 4)))) { + val |= ((u32)0x1 << (portnum * 4)); + QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val); + } else if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state)) { + goto start_fw; + } + + prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE); + + switch (prev_state) { + case QLCNIC_DEV_COLD: +start_fw: + QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITALIZING); + qlcnic_api_unlock(adapter); + return 1; + + case QLCNIC_DEV_READY: + qlcnic_api_unlock(adapter); + return 0; + + case QLCNIC_DEV_NEED_RESET: + val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE); + val |= ((u32)0x1 << (portnum * 4)); + QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val); + break; + + case QLCNIC_DEV_NEED_QUISCENT: + val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE); + val |= ((u32)0x1 << ((portnum * 4) + 1)); + QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val); + break; + + case QLCNIC_DEV_FAILED: + qlcnic_api_unlock(adapter); + return -1; + } + + qlcnic_api_unlock(adapter); + msleep(1000); + while ((QLCRD32(adapter, QLCNIC_CRB_DEV_STATE) != QLCNIC_DEV_READY) && + ++cnt < 20) + msleep(1000); + + if (cnt >= 20) + return -1; + + if (qlcnic_api_lock(adapter)) + return -1; + + val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE); + val &= ~((u32)0x3 << (portnum * 4)); + QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val); + + qlcnic_api_unlock(adapter); + + return 0; +} + +static void +qlcnic_fwinit_work(struct work_struct *work) +{ + struct qlcnic_adapter *adapter = container_of(work, + struct qlcnic_adapter, fw_work.work); + int dev_state; + + if (++adapter->fw_wait_cnt > FW_POLL_THRESH) + goto err_ret; + + if (test_bit(__QLCNIC_START_FW, &adapter->state)) { + + if (qlcnic_check_drv_state(adapter)) { + qlcnic_schedule_work(adapter, + qlcnic_fwinit_work, FW_POLL_DELAY); + return; + } + + if (!qlcnic_start_firmware(adapter)) { + qlcnic_schedule_work(adapter, qlcnic_attach_work, 0); + return; + } + + goto err_ret; + } + + dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE); + switch (dev_state) { + case QLCNIC_DEV_READY: + if (!qlcnic_start_firmware(adapter)) { + qlcnic_schedule_work(adapter, qlcnic_attach_work, 0); + return; + } + case QLCNIC_DEV_FAILED: + break; + + default: + qlcnic_schedule_work(adapter, + qlcnic_fwinit_work, 2 * FW_POLL_DELAY); + return; + } + +err_ret: + qlcnic_clr_all_drv_state(adapter); +} + +static void +qlcnic_detach_work(struct work_struct *work) +{ + struct qlcnic_adapter *adapter = container_of(work, + struct qlcnic_adapter, fw_work.work); + struct net_device *netdev = adapter->netdev; + u32 status; + + netif_device_detach(netdev); + + qlcnic_down(adapter, netdev); + + qlcnic_detach(adapter); + + status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1); + + if (status & QLCNIC_RCODE_FATAL_ERROR) + goto err_ret; + + if (adapter->temp == QLCNIC_TEMP_PANIC) + goto err_ret; + + qlcnic_set_drv_state(adapter, adapter->dev_state); + + adapter->fw_wait_cnt = 0; + + qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY); + + return; + +err_ret: + qlcnic_clr_all_drv_state(adapter); + +} + +static void +qlcnic_dev_request_reset(struct qlcnic_adapter *adapter) +{ + u32 state; + + if (qlcnic_api_lock(adapter)) + return; + + state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE); + + if (state != QLCNIC_DEV_INITALIZING && state != QLCNIC_DEV_NEED_RESET) { + QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET); + set_bit(__QLCNIC_START_FW, &adapter->state); + } + + qlcnic_api_unlock(adapter); +} + +static void +qlcnic_schedule_work(struct qlcnic_adapter *adapter, + work_func_t func, int delay) +{ + INIT_DELAYED_WORK(&adapter->fw_work, func); + schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay)); +} + +static void +qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter) +{ + while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) + msleep(10); + + cancel_delayed_work_sync(&adapter->fw_work); +} + +static void +qlcnic_attach_work(struct work_struct *work) +{ + struct qlcnic_adapter *adapter = container_of(work, + struct qlcnic_adapter, fw_work.work); + struct net_device *netdev = adapter->netdev; + int err; + + if (netif_running(netdev)) { + err = qlcnic_attach(adapter); + if (err) + goto done; + + err = qlcnic_up(adapter, netdev); + if (err) { + qlcnic_detach(adapter); + goto done; + } + + qlcnic_config_indev_addr(netdev, NETDEV_UP); + } + + netif_device_attach(netdev); + +done: + adapter->fw_fail_cnt = 0; + clear_bit(__QLCNIC_RESETTING, &adapter->state); + qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY); +} + +static int +qlcnic_check_health(struct qlcnic_adapter *adapter) +{ + u32 state = 0, heartbit; + struct net_device *netdev = adapter->netdev; + + if (qlcnic_check_temp(adapter)) + goto detach; + + if (adapter->need_fw_reset) { + qlcnic_dev_request_reset(adapter); + goto detach; + } + + state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE); + if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT) + adapter->need_fw_reset = 1; + + heartbit = QLCRD32(adapter, QLCNIC_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; + + qlcnic_dev_request_reset(adapter); + + clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state); + + dev_info(&netdev->dev, "firmware hang detected\n"); + +detach: + adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state : + QLCNIC_DEV_NEED_RESET; + + if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) && + !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) + qlcnic_schedule_work(adapter, qlcnic_detach_work, 0); + + return 1; +} + +static void +qlcnic_fw_poll_work(struct work_struct *work) +{ + struct qlcnic_adapter *adapter = container_of(work, + struct qlcnic_adapter, fw_work.work); + + if (test_bit(__QLCNIC_RESETTING, &adapter->state)) + goto reschedule; + + + if (qlcnic_check_health(adapter)) + return; + +reschedule: + qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY); +} + +static ssize_t +qlcnic_store_bridged_mode(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + struct qlcnic_adapter *adapter = dev_get_drvdata(dev); + unsigned long new; + int ret = -EINVAL; + + if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)) + goto err_out; + + if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) + goto err_out; + + if (strict_strtoul(buf, 2, &new)) + goto err_out; + + if (!qlcnic_config_bridged_mode(adapter, !!new)) + ret = len; + +err_out: + return ret; +} + +static ssize_t +qlcnic_show_bridged_mode(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qlcnic_adapter *adapter = dev_get_drvdata(dev); + int bridged_mode = 0; + + if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG) + bridged_mode = !!(adapter->flags & QLCNIC_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 = qlcnic_show_bridged_mode, + .store = qlcnic_store_bridged_mode, +}; + +static ssize_t +qlcnic_store_diag_mode(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + struct qlcnic_adapter *adapter = dev_get_drvdata(dev); + unsigned long new; + + if (strict_strtoul(buf, 2, &new)) + return -EINVAL; + + if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED)) + adapter->flags ^= QLCNIC_DIAG_ENABLED; + + return len; +} + +static ssize_t +qlcnic_show_diag_mode(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qlcnic_adapter *adapter = dev_get_drvdata(dev); + + return sprintf(buf, "%d\n", + !!(adapter->flags & QLCNIC_DIAG_ENABLED)); +} + +static struct device_attribute dev_attr_diag_mode = { + .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)}, + .show = qlcnic_show_diag_mode, + .store = qlcnic_store_diag_mode, +}; + +static int +qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter, + loff_t offset, size_t size) +{ + if (!(adapter->flags & QLCNIC_DIAG_ENABLED)) + return -EIO; + + if ((size != 4) || (offset & 0x3)) + return -EINVAL; + + if (offset < QLCNIC_PCI_CRBSPACE) + return -EINVAL; + + return 0; +} + +static ssize_t +qlcnic_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr, + char *buf, loff_t offset, size_t size) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct qlcnic_adapter *adapter = dev_get_drvdata(dev); + u32 data; + int ret; + + ret = qlcnic_sysfs_validate_crb(adapter, offset, size); + if (ret != 0) + return ret; + + data = QLCRD32(adapter, offset); + memcpy(buf, &data, size); + return size; +} + +static ssize_t +qlcnic_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr, + char *buf, loff_t offset, size_t size) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct qlcnic_adapter *adapter = dev_get_drvdata(dev); + u32 data; + int ret; + + ret = qlcnic_sysfs_validate_crb(adapter, offset, size); + if (ret != 0) + return ret; + + memcpy(&data, buf, size); + QLCWR32(adapter, offset, data); + return size; +} + +static int +qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter, + loff_t offset, size_t size) +{ + if (!(adapter->flags & QLCNIC_DIAG_ENABLED)) + return -EIO; + + if ((size != 8) || (offset & 0x7)) + return -EIO; + + return 0; +} + +static ssize_t +qlcnic_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr, + char *buf, loff_t offset, size_t size) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct qlcnic_adapter *adapter = dev_get_drvdata(dev); + u64 data; + int ret; + + ret = qlcnic_sysfs_validate_mem(adapter, offset, size); + if (ret != 0) + return ret; + + if (qlcnic_pci_mem_read_2M(adapter, offset, &data)) + return -EIO; + + memcpy(buf, &data, size); + + return size; +} + +static ssize_t +qlcnic_sysfs_write_mem(struct kobject *kobj, struct bin_attribute *attr, + char *buf, loff_t offset, size_t size) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct qlcnic_adapter *adapter = dev_get_drvdata(dev); + u64 data; + int ret; + + ret = qlcnic_sysfs_validate_mem(adapter, offset, size); + if (ret != 0) + return ret; + + memcpy(&data, buf, size); + + if (qlcnic_pci_mem_write_2M(adapter, offset, data)) + return -EIO; + + return size; +} + + +static struct bin_attribute bin_attr_crb = { + .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)}, + .size = 0, + .read = qlcnic_sysfs_read_crb, + .write = qlcnic_sysfs_write_crb, +}; + +static struct bin_attribute bin_attr_mem = { + .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)}, + .size = 0, + .read = qlcnic_sysfs_read_mem, + .write = qlcnic_sysfs_write_mem, +}; + +static void +qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter) +{ + struct device *dev = &adapter->pdev->dev; + + if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG) + if (device_create_file(dev, &dev_attr_bridged_mode)) + dev_warn(dev, + "failed to create bridged_mode sysfs entry\n"); +} + +static void +qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter) +{ + struct device *dev = &adapter->pdev->dev; + + if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG) + device_remove_file(dev, &dev_attr_bridged_mode); +} + +static void +qlcnic_create_diag_entries(struct qlcnic_adapter *adapter) +{ + struct device *dev = &adapter->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"); +} + + +static void +qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter) +{ + struct device *dev = &adapter->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); +} + +#ifdef CONFIG_INET + +#define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops) + +static int +qlcnic_destip_supported(struct qlcnic_adapter *adapter) +{ + if (adapter->ahw.cut_through) + return 0; + + return 1; +} + +static void +qlcnic_config_indev_addr(struct net_device *dev, unsigned long event) +{ + struct in_device *indev; + struct qlcnic_adapter *adapter = netdev_priv(dev); + + if (!qlcnic_destip_supported(adapter)) + return; + + indev = in_dev_get(dev); + if (!indev) + return; + + for_ifa(indev) { + switch (event) { + case NETDEV_UP: + qlcnic_config_ipaddr(adapter, + ifa->ifa_address, QLCNIC_IP_UP); + break; + case NETDEV_DOWN: + qlcnic_config_ipaddr(adapter, + ifa->ifa_address, QLCNIC_IP_DOWN); + break; + default: + break; + } + } endfor_ifa(indev); + + in_dev_put(indev); + return; +} + +static int qlcnic_netdev_event(struct notifier_block *this, + unsigned long event, void *ptr) +{ + struct qlcnic_adapter *adapter; + struct net_device *dev = (struct net_device *)ptr; + +recheck: + if (dev == NULL) + goto done; + + if (dev->priv_flags & IFF_802_1Q_VLAN) { + dev = vlan_dev_real_dev(dev); + goto recheck; + } + + if (!is_qlcnic_netdev(dev)) + goto done; + + adapter = netdev_priv(dev); + + if (!adapter) + goto done; + + if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) + goto done; + + qlcnic_config_indev_addr(dev, event); +done: + return NOTIFY_DONE; +} + +static int +qlcnic_inetaddr_event(struct notifier_block *this, + unsigned long event, void *ptr) +{ + struct qlcnic_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_qlcnic_netdev(dev)) + goto done; + + adapter = netdev_priv(dev); + + if (!adapter || !qlcnic_destip_supported(adapter)) + goto done; + + if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC) + goto done; + + switch (event) { + case NETDEV_UP: + qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP); + break; + case NETDEV_DOWN: + qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN); + break; + default: + break; + } + +done: + return NOTIFY_DONE; +} + +static struct notifier_block qlcnic_netdev_cb = { + .notifier_call = qlcnic_netdev_event, +}; + +static struct notifier_block qlcnic_inetaddr_cb = { + .notifier_call = qlcnic_inetaddr_event, +}; +#else +static void +qlcnic_config_indev_addr(struct net_device *dev, unsigned long event) +{ } +#endif + +static struct pci_driver qlcnic_driver = { + .name = qlcnic_driver_name, + .id_table = qlcnic_pci_tbl, + .probe = qlcnic_probe, + .remove = __devexit_p(qlcnic_remove), +#ifdef CONFIG_PM + .suspend = qlcnic_suspend, + .resume = qlcnic_resume, +#endif + .shutdown = qlcnic_shutdown +}; + +static int __init qlcnic_init_module(void) +{ + + printk(KERN_INFO "%s\n", qlcnic_driver_string); + +#ifdef CONFIG_INET + register_netdevice_notifier(&qlcnic_netdev_cb); + register_inetaddr_notifier(&qlcnic_inetaddr_cb); +#endif + + + return pci_register_driver(&qlcnic_driver); +} + +module_init(qlcnic_init_module); + +static void __exit qlcnic_exit_module(void) +{ + + pci_unregister_driver(&qlcnic_driver); + +#ifdef CONFIG_INET + unregister_inetaddr_notifier(&qlcnic_inetaddr_cb); + unregister_netdevice_notifier(&qlcnic_netdev_cb); +#endif +} + +module_exit(qlcnic_exit_module); |