/* * Copyright (C) 2003 - 2009 NetXen, Inc. * All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. * * The full GNU General Public License is included in this distribution * in the file called LICENSE. * * Contact Information: * info@netxen.com * NetXen Inc, * 18922 Forge Drive * Cupertino, CA 95014-0701 * */ #include #include #include "netxen_nic_hw.h" #include "netxen_nic.h" #include "netxen_nic_phan_reg.h" #include #include #include #include #include MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID); char netxen_nic_driver_name[] = "netxen_nic"; static char netxen_nic_driver_string[] = "NetXen Network Driver version " NETXEN_NIC_LINUX_VERSIONID; static int port_mode = NETXEN_PORT_MODE_AUTO_NEG; /* Default to restricted 1G auto-neg mode */ static int wol_port_mode = 5; static int use_msi = 1; static int use_msi_x = 1; /* Local functions to NetXen NIC driver */ static int __devinit netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent); static void __devexit netxen_nic_remove(struct pci_dev *pdev); static int netxen_nic_open(struct net_device *netdev); static int netxen_nic_close(struct net_device *netdev); static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *); static void netxen_tx_timeout(struct net_device *netdev); static void netxen_reset_task(struct work_struct *work); static void netxen_watchdog(unsigned long); static int netxen_nic_poll(struct napi_struct *napi, int budget); #ifdef CONFIG_NET_POLL_CONTROLLER static void netxen_nic_poll_controller(struct net_device *netdev); #endif static irqreturn_t netxen_intr(int irq, void *data); static irqreturn_t netxen_msi_intr(int irq, void *data); static irqreturn_t netxen_msix_intr(int irq, void *data); /* PCI Device ID Table */ #define ENTRY(device) \ {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \ .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0} static struct pci_device_id netxen_pci_tbl[] __devinitdata = { ENTRY(PCI_DEVICE_ID_NX2031_10GXSR), ENTRY(PCI_DEVICE_ID_NX2031_10GCX4), ENTRY(PCI_DEVICE_ID_NX2031_4GCU), ENTRY(PCI_DEVICE_ID_NX2031_IMEZ), ENTRY(PCI_DEVICE_ID_NX2031_HMEZ), ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT), ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2), ENTRY(PCI_DEVICE_ID_NX3031), {0,} }; MODULE_DEVICE_TABLE(pci, netxen_pci_tbl); static struct workqueue_struct *netxen_workq; #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp) #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq) static void netxen_watchdog(unsigned long); static uint32_t crb_cmd_producer[4] = { CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1, CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3 }; void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter, struct nx_host_tx_ring *tx_ring) { NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer); if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) { netif_stop_queue(adapter->netdev); smp_mb(); } } static uint32_t crb_cmd_consumer[4] = { CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1, CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3 }; static inline void netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter, struct nx_host_tx_ring *tx_ring) { NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer); } static uint32_t msi_tgt_status[8] = { ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1, ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3, ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5, ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7 }; static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG; static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring) { struct netxen_adapter *adapter = sds_ring->adapter; NXWR32(adapter, sds_ring->crb_intr_mask, 0); } static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring) { struct netxen_adapter *adapter = sds_ring->adapter; NXWR32(adapter, sds_ring->crb_intr_mask, 0x1); if (!NETXEN_IS_MSI_FAMILY(adapter)) adapter->pci_write_immediate(adapter, adapter->legacy_intr.tgt_mask_reg, 0xfbff); } static int netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count) { int size = sizeof(struct nx_host_sds_ring) * count; recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL); return (recv_ctx->sds_rings == NULL); } static void netxen_free_sds_rings(struct netxen_recv_context *recv_ctx) { if (recv_ctx->sds_rings != NULL) kfree(recv_ctx->sds_rings); } static int netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev) { int ring; struct nx_host_sds_ring *sds_ring; struct netxen_recv_context *recv_ctx = &adapter->recv_ctx; if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings)) return -ENOMEM; for (ring = 0; ring < adapter->max_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; netif_napi_add(netdev, &sds_ring->napi, netxen_nic_poll, NETXEN_NETDEV_WEIGHT); } return 0; } static void netxen_napi_enable(struct netxen_adapter *adapter) { int ring; struct nx_host_sds_ring *sds_ring; struct netxen_recv_context *recv_ctx = &adapter->recv_ctx; for (ring = 0; ring < adapter->max_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; napi_enable(&sds_ring->napi); netxen_nic_enable_int(sds_ring); } } static void netxen_napi_disable(struct netxen_adapter *adapter) { int ring; struct nx_host_sds_ring *sds_ring; struct netxen_recv_context *recv_ctx = &adapter->recv_ctx; for (ring = 0; ring < adapter->max_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; netxen_nic_disable_int(sds_ring); napi_synchronize(&sds_ring->napi); napi_disable(&sds_ring->napi); } } static int nx_set_dma_mask(struct netxen_adapter *adapter) { struct pci_dev *pdev = adapter->pdev; uint64_t mask, cmask; adapter->pci_using_dac = 0; mask = DMA_BIT_MASK(32); cmask = DMA_BIT_MASK(32); if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { #ifndef CONFIG_IA64 mask = DMA_BIT_MASK(35); #endif } else { mask = DMA_BIT_MASK(39); cmask = mask; } if (pci_set_dma_mask(pdev, mask) == 0 && pci_set_consistent_dma_mask(pdev, cmask) == 0) { adapter->pci_using_dac = 1; return 0; } return -EIO; } /* Update addressable range if firmware supports it */ static int nx_update_dma_mask(struct netxen_adapter *adapter) { int change, shift, err; uint64_t mask, old_mask, old_cmask; struct pci_dev *pdev = adapter->pdev; change = 0; shift = NXRD32(adapter, CRB_DMA_SHIFT); if (shift > 32) return 0; if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9)) change = 1; else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4)) change = 1; if (change) { old_mask = pdev->dma_mask; old_cmask = pdev->dev.coherent_dma_mask; mask = DMA_BIT_MASK(32+shift); err = pci_set_dma_mask(pdev, mask); if (err) goto err_out; if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { err = pci_set_consistent_dma_mask(pdev, mask); if (err) goto err_out; } dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift); } return 0; err_out: pci_set_dma_mask(pdev, old_mask); pci_set_consistent_dma_mask(pdev, old_cmask); return err; } static void netxen_check_options(struct netxen_adapter *adapter) { if (adapter->ahw.port_type == NETXEN_NIC_XGBE) { adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G; adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G; } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) { adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G; adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G; } adapter->msix_supported = 0; if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { adapter->msix_supported = !!use_msi_x; adapter->rss_supported = !!use_msi_x; } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) { switch (adapter->ahw.board_type) { case NETXEN_BRDTYPE_P2_SB31_10G: case NETXEN_BRDTYPE_P2_SB31_10G_CX4: adapter->msix_supported = !!use_msi_x; adapter->rss_supported = !!use_msi_x; break; default: break; } } adapter->num_txd = MAX_CMD_DESCRIPTORS; if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS; adapter->max_rds_rings = 3; } else { adapter->num_lro_rxd = 0; adapter->max_rds_rings = 2; } } static int netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot) { u32 val, timeout; if (first_boot == 0x55555555) { /* This is the first boot after power up */ NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC); if (!NX_IS_REVISION_P2(adapter->ahw.revision_id)) return 0; /* PCI bus master workaround */ first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4)); if (!(first_boot & 0x4)) { first_boot |= 0x4; NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot); first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4)); } /* This is the first boot after power up */ first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET); if (first_boot != 0x80000f) { /* clear the register for future unloads/loads */ NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0); return -EIO; } /* Start P2 boot loader */ val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE); NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1); timeout = 0; do { msleep(1); val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc)); if (++timeout > 5000) return -EIO; } while (val == NETXEN_BDINFO_MAGIC); } return 0; } static void netxen_set_port_mode(struct netxen_adapter *adapter) { u32 val, data; val = adapter->ahw.board_type; if ((val == NETXEN_BRDTYPE_P3_HMEZ) || (val == NETXEN_BRDTYPE_P3_XG_LOM)) { if (port_mode == NETXEN_PORT_MODE_802_3_AP) { data = NETXEN_PORT_MODE_802_3_AP; NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data); } else if (port_mode == NETXEN_PORT_MODE_XG) { data = NETXEN_PORT_MODE_XG; NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data); } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) { data = NETXEN_PORT_MODE_AUTO_NEG_1G; NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data); } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) { data = NETXEN_PORT_MODE_AUTO_NEG_XG; NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data); } else { data = NETXEN_PORT_MODE_AUTO_NEG; NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data); } if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) && (wol_port_mode != NETXEN_PORT_MODE_XG) && (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) && (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) { wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG; } NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode); } } static void netxen_set_msix_bit(struct pci_dev *pdev, int enable) { u32 control; int pos; pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); if (pos) { pci_read_config_dword(pdev, pos, &control); if (enable) control |= PCI_MSIX_FLAGS_ENABLE; else control = 0; pci_write_config_dword(pdev, pos, control); } } static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count) { int i; for (i = 0; i < count; i++) adapter->msix_entries[i].entry = i; } static int netxen_read_mac_addr(struct netxen_adapter *adapter) { int i; unsigned char *p; __le64 mac_addr; struct net_device *netdev = adapter->netdev; struct pci_dev *pdev = adapter->pdev; if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0) return -EIO; } else { if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0) return -EIO; } p = (unsigned char *)&mac_addr; for (i = 0; i < 6; i++) netdev->dev_addr[i] = *(p + 5 - i); memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); /* set station address */ if (!is_valid_ether_addr(netdev->perm_addr)) dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr); return 0; } int netxen_nic_set_mac(struct net_device *netdev, void *p) { struct netxen_adapter *adapter = netdev_priv(netdev); struct sockaddr *addr = p; if (!is_valid_ether_addr(addr->sa_data)) return -EINVAL; if (netif_running(netdev)) { netif_device_detach(netdev); netxen_napi_disable(adapter); } memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); adapter->macaddr_set(adapter, addr->sa_data); if (netif_running(netdev)) { netif_device_attach(netdev); netxen_napi_enable(adapter); } return 0; } static void netxen_set_multicast_list(struct net_device *dev) { struct netxen_adapter *adapter = netdev_priv(dev); adapter->set_multi(dev); } static const struct net_device_ops netxen_netdev_ops = { .ndo_open = netxen_nic_open, .ndo_stop = netxen_nic_close, .ndo_start_xmit = netxen_nic_xmit_frame, .ndo_get_stats = netxen_nic_get_stats, .ndo_validate_addr = eth_validate_addr, .ndo_set_multicast_list = netxen_set_multicast_list, .ndo_set_mac_address = netxen_nic_set_mac, .ndo_change_mtu = netxen_nic_change_mtu, .ndo_tx_timeout = netxen_tx_timeout, #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = netxen_nic_poll_controller, #endif }; static void netxen_setup_intr(struct netxen_adapter *adapter) { struct netxen_legacy_intr_set *legacy_intrp; struct pci_dev *pdev = adapter->pdev; int err, num_msix; if (adapter->rss_supported) { num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ? MSIX_ENTRIES_PER_ADAPTER : 2; } else num_msix = 1; adapter->max_sds_rings = 1; adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED); if (adapter->ahw.revision_id >= NX_P3_B0) legacy_intrp = &legacy_intr[adapter->ahw.pci_func]; else legacy_intrp = &legacy_intr[0]; adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit; adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg; adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg; adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg; netxen_set_msix_bit(pdev, 0); if (adapter->msix_supported) { netxen_init_msix_entries(adapter, num_msix); err = pci_enable_msix(pdev, adapter->msix_entries, num_msix); if (err == 0) { adapter->flags |= NETXEN_NIC_MSIX_ENABLED; netxen_set_msix_bit(pdev, 1); if (adapter->rss_supported) adapter->max_sds_rings = num_msix; dev_info(&pdev->dev, "using msi-x interrupts\n"); return; } if (err > 0) pci_disable_msix(pdev); /* fall through for msi */ } if (use_msi && !pci_enable_msi(pdev)) { adapter->flags |= NETXEN_NIC_MSI_ENABLED; adapter->msi_tgt_status = msi_tgt_status[adapter->ahw.pci_func]; dev_info(&pdev->dev, "using msi interrupts\n"); adapter->msix_entries[0].vector = pdev->irq; return; } dev_info(&pdev->dev, "using legacy interrupts\n"); adapter->msix_entries[0].vector = pdev->irq; } static void netxen_teardown_intr(struct netxen_adapter *adapter) { if (adapter->flags & NETXEN_NIC_MSIX_ENABLED) pci_disable_msix(adapter->pdev); if (adapter->flags & NETXEN_NIC_MSI_ENABLED) pci_disable_msi(adapter->pdev); } static void netxen_cleanup_pci_map(struct netxen_adapter *adapter) { if (adapter->ahw.db_base != NULL) iounmap(adapter->ahw.db_base); if (adapter->ahw.pci_base0 != NULL) iounmap(adapter->ahw.pci_base0); if (adapter->ahw.pci_base1 != NULL) iounmap(adapter->ahw.pci_base1); if (adapter->ahw.pci_base2 != NULL) iounmap(adapter->ahw.pci_base2); } static int netxen_setup_pci_map(struct netxen_adapter *adapter) { void __iomem *mem_ptr0 = NULL; void __iomem *mem_ptr1 = NULL; void __iomem *mem_ptr2 = NULL; void __iomem *db_ptr = NULL; unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0; struct pci_dev *pdev = adapter->pdev; int pci_func = adapter->ahw.pci_func; int err = 0; /* * Set the CRB window to invalid. If any register in window 0 is * accessed it should set the window to 0 and then reset it to 1. */ adapter->curr_window = 255; adapter->ahw.qdr_sn_window = -1; adapter->ahw.ddr_mn_window = -1; /* remap phys address */ mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ mem_len = pci_resource_len(pdev, 0); pci_len0 = 0; adapter->hw_write_wx = netxen_nic_hw_write_wx_128M; adapter->hw_read_wx = netxen_nic_hw_read_wx_128M; adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M; adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M; adapter->pci_set_window = netxen_nic_pci_set_window_128M; adapter->pci_mem_read = netxen_nic_pci_mem_read_128M; adapter->pci_mem_write = netxen_nic_pci_mem_write_128M; /* 128 Meg of memory */ if (mem_len == NETXEN_PCI_128MB_SIZE) { mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE); mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START, SECOND_PAGE_GROUP_SIZE); mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); } else if (mem_len == NETXEN_PCI_32MB_SIZE) { mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE); mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START - SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); } else if (mem_len == NETXEN_PCI_2MB_SIZE) { adapter->hw_write_wx = netxen_nic_hw_write_wx_2M; adapter->hw_read_wx = netxen_nic_hw_read_wx_2M; adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M; adapter->pci_write_immediate = netxen_nic_pci_write_immediate_2M; adapter->pci_set_window = netxen_nic_pci_set_window_2M; adapter->pci_mem_read = netxen_nic_pci_mem_read_2M; adapter->pci_mem_write = netxen_nic_pci_mem_write_2M; mem_ptr0 = pci_ioremap_bar(pdev, 0); if (mem_ptr0 == NULL) { dev_err(&pdev->dev, "failed to map PCI bar 0\n"); return -EIO; } pci_len0 = mem_len; adapter->ahw.ddr_mn_window = 0; adapter->ahw.qdr_sn_window = 0; adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW + (pci_func * 0x20); adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW; if (pci_func < 4) adapter->ahw.ms_win_crb += (pci_func * 0x20); else adapter->ahw.ms_win_crb += 0xA0 + ((pci_func - 4) * 0x10); } else { return -EIO; } dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20)); adapter->ahw.pci_base0 = mem_ptr0; adapter->ahw.pci_len0 = pci_len0; adapter->ahw.pci_base1 = mem_ptr1; adapter->ahw.pci_base2 = mem_ptr2; if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) goto skip_doorbell; db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ db_len = pci_resource_len(pdev, 4); if (db_len == 0) { printk(KERN_ERR "%s: doorbell is disabled\n", netxen_nic_driver_name); err = -EIO; goto err_out; } db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES); if (!db_ptr) { printk(KERN_ERR "%s: Failed to allocate doorbell map.", netxen_nic_driver_name); err = -EIO; goto err_out; } skip_doorbell: adapter->ahw.db_base = db_ptr; adapter->ahw.db_len = db_len; return 0; err_out: netxen_cleanup_pci_map(adapter); return err; } static int netxen_start_firmware(struct netxen_adapter *adapter, int request_fw) { int val, err, first_boot; struct pci_dev *pdev = adapter->pdev; int first_driver = 0; if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) first_driver = (adapter->portnum == 0); else first_driver = (adapter->ahw.pci_func == 0); if (!first_driver) goto wait_init; first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc)); err = netxen_check_hw_init(adapter, first_boot); if (err) { dev_err(&pdev->dev, "error in init HW init sequence\n"); return err; } if (request_fw) netxen_request_firmware(adapter); err = netxen_need_fw_reset(adapter); if (err <= 0) return err; if (first_boot != 0x55555555) { NXWR32(adapter, CRB_CMDPEG_STATE, 0); netxen_pinit_from_rom(adapter, 0); msleep(1); } NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555); if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) netxen_set_port_mode(adapter); netxen_load_firmware(adapter); if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { /* Initialize multicast addr pool owners */ val = 0x7654; if (adapter->ahw.port_type == NETXEN_NIC_XGBE) val |= 0x0f000000; NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val); } err = netxen_init_dummy_dma(adapter); if (err) return err; /* * Tell the hardware our version number. */ val = (_NETXEN_NIC_LINUX_MAJOR << 16) | ((_NETXEN_NIC_LINUX_MINOR << 8)) | (_NETXEN_NIC_LINUX_SUBVERSION); NXWR32(adapter, CRB_DRIVER_VERSION, val); wait_init: /* Handshake with the card before we register the devices. */ err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); if (err) { netxen_free_dummy_dma(adapter); return err; } nx_update_dma_mask(adapter); netxen_nic_get_firmware_info(adapter); return 0; } static int netxen_nic_request_irq(struct netxen_adapter *adapter) { irq_handler_t handler; struct nx_host_sds_ring *sds_ring; int err, ring; unsigned long flags = IRQF_SAMPLE_RANDOM; struct net_device *netdev = adapter->netdev; struct netxen_recv_context *recv_ctx = &adapter->recv_ctx; if (adapter->flags & NETXEN_NIC_MSIX_ENABLED) handler = netxen_msix_intr; else if (adapter->flags & NETXEN_NIC_MSI_ENABLED) handler = netxen_msi_intr; else { flags |= IRQF_SHARED; handler = netxen_intr; } adapter->irq = netdev->irq; for (ring = 0; ring < adapter->max_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; sprintf(sds_ring->name, "%s[%d]", netdev->name, ring); err = request_irq(sds_ring->irq, handler, flags, sds_ring->name, sds_ring); if (err) return err; } return 0; } static void netxen_nic_free_irq(struct netxen_adapter *adapter) { int ring; struct nx_host_sds_ring *sds_ring; struct netxen_recv_context *recv_ctx = &adapter->recv_ctx; for (ring = 0; ring < adapter->max_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; free_irq(sds_ring->irq, sds_ring); } } static void netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter) { adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT; adapter->coal.normal.data.rx_time_us = NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US; adapter->coal.normal.data.rx_packets = NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS; adapter->coal.normal.data.tx_time_us = NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US; adapter->coal.normal.data.tx_packets = NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS; } static int netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev) { int err; err = adapter->init_port(adapter, adapter->physical_port); if (err) { printk(KERN_ERR "%s: Failed to initialize port %d\n", netxen_nic_driver_name, adapter->portnum); return err; } if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) adapter->macaddr_set(adapter, netdev->dev_addr); adapter->set_multi(netdev); adapter->set_mtu(adapter, netdev->mtu); adapter->ahw.linkup = 0; if (adapter->max_sds_rings > 1) netxen_config_rss(adapter, 1); if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) netxen_config_intr_coalesce(adapter); netxen_napi_enable(adapter); if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION) netxen_linkevent_request(adapter, 1); else netxen_nic_set_link_parameters(adapter); mod_timer(&adapter->watchdog_timer, jiffies); return 0; } static void netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev) { spin_lock(&adapter->tx_clean_lock); netif_carrier_off(netdev); netif_tx_disable(netdev); if (adapter->stop_port) adapter->stop_port(adapter); if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) netxen_p3_free_mac_list(adapter); netxen_napi_disable(adapter); netxen_release_tx_buffers(adapter); spin_unlock(&adapter->tx_clean_lock); del_timer_sync(&adapter->watchdog_timer); FLUSH_SCHEDULED_WORK(); } static int netxen_nic_attach(struct netxen_adapter *adapter) { struct net_device *netdev = adapter->netdev; struct pci_dev *pdev = adapter->pdev; int err, ring; struct nx_host_rds_ring *rds_ring; struct nx_host_tx_ring *tx_ring; if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) return 0; err = netxen_init_firmware(adapter); if (err != 0) { printk(KERN_ERR "Failed to init firmware\n"); return -EIO; } err = netxen_alloc_sw_resources(adapter); if (err) { printk(KERN_ERR "%s: Error in setting sw resources\n", netdev->name); return err; } netxen_nic_clear_stats(adapter); err = netxen_alloc_hw_resources(adapter); if (err) { printk(KERN_ERR "%s: Error in setting hw resources\n", netdev->name); goto err_out_free_sw; } if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { tx_ring = adapter->tx_ring; tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum]; tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum]; tx_ring->producer = 0; tx_ring->sw_consumer = 0; netxen_nic_update_cmd_producer(adapter, tx_ring); netxen_nic_update_cmd_consumer(adapter, tx_ring); } for (ring = 0; ring < adapter->max_rds_rings; ring++) { rds_ring = &adapter->recv_ctx.rds_rings[ring]; netxen_post_rx_buffers(adapter, ring, rds_ring); } err = netxen_nic_request_irq(adapter); if (err) { dev_err(&pdev->dev, "%s: failed to setup interrupt\n", netdev->name); goto err_out_free_rxbuf; } if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) netxen_nic_init_coalesce_defaults(adapter); 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_free_hw_resources(adapter); netxen_release_rx_buffers(adapter); netxen_nic_free_irq(adapter); netxen_free_sw_resources(adapter); adapter->is_up = 0; } int netxen_nic_reset_context(struct netxen_adapter *adapter) { int err = 0; struct net_device *netdev = adapter->netdev; if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) { if (netif_running(netdev)) netxen_nic_down(adapter, netdev); netxen_nic_detach(adapter); err = netxen_nic_attach(adapter); if (err) goto done; if (netif_running(netdev)) err = netxen_nic_up(adapter, netdev); } done: return err; } static int netxen_setup_netdev(struct netxen_adapter *adapter, struct net_device *netdev) { int err = 0; struct pci_dev *pdev = adapter->pdev; adapter->rx_csum = 1; adapter->mc_enabled = 0; if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) adapter->max_mc_count = 38; else adapter->max_mc_count = 16; netdev->netdev_ops = &netxen_netdev_ops; netdev->watchdog_timeo = 2*HZ; netxen_nic_change_mtu(netdev, netdev->mtu); SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops); netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO); netdev->features |= (NETIF_F_GRO); netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO); if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6); netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6); } if (adapter->pci_using_dac) { netdev->features |= NETIF_F_HIGHDMA; netdev->vlan_features |= NETIF_F_HIGHDMA; } if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX) netdev->features |= (NETIF_F_HW_VLAN_TX); netdev->irq = adapter->msix_entries[0].vector; err = netxen_napi_add(adapter, netdev); if (err) return err; init_timer(&adapter->watchdog_timer); adapter->watchdog_timer.function = &netxen_watchdog; adapter->watchdog_timer.data = (unsigned long)adapter; INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task); INIT_WORK(&adapter->tx_timeout_task, netxen_reset_task); if (netxen_read_mac_addr(adapter)) dev_warn(&pdev->dev, "failed to read mac addr\n"); netif_carrier_off(netdev); netif_stop_queue(netdev); err = register_netdev(netdev); if (err) { dev_err(&pdev->dev, "failed to register net device\n"); return err; } return 0; } static int __devinit netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct net_device *netdev = NULL; struct netxen_adapter *adapter = NULL; int i = 0, err; int pci_func_id = PCI_FUNC(pdev->devfn); uint8_t revision_id; if (pdev->class != 0x020000) { printk(KERN_DEBUG "NetXen function %d, class %x will not " "be enabled.\n",pci_func_id, pdev->class); return -ENODEV; } if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) { printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x" "will not be enabled.\n", NX_P3_A0, NX_P3_B1); return -ENODEV; } if ((err = pci_enable_device(pdev))) return err; if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { err = -ENODEV; goto err_out_disable_pdev; } if ((err = pci_request_regions(pdev, netxen_nic_driver_name))) goto err_out_disable_pdev; pci_set_master(pdev); netdev = alloc_etherdev(sizeof(struct netxen_adapter)); if(!netdev) { dev_err(&pdev->dev, "failed to allocate net_device\n"); err = -ENOMEM; goto err_out_free_res; } SET_NETDEV_DEV(netdev, &pdev->dev); adapter = netdev_priv(netdev); adapter->netdev = netdev; adapter->pdev = pdev; adapter->ahw.pci_func = pci_func_id; revision_id = pdev->revision; adapter->ahw.revision_id = revision_id; err = nx_set_dma_mask(adapter); if (err) goto err_out_free_netdev; rwlock_init(&adapter->adapter_lock); spin_lock_init(&adapter->tx_clean_lock); INIT_LIST_HEAD(&adapter->mac_list); err = netxen_setup_pci_map(adapter); if (err) goto err_out_free_netdev; /* This will be reset for mezz cards */ adapter->portnum = pci_func_id; err = netxen_nic_get_board_info(adapter); if (err) { dev_err(&pdev->dev, "Error getting board config info.\n"); goto err_out_iounmap; } netxen_initialize_adapter_ops(adapter); /* Mezz cards have PCI function 0,2,3 enabled */ switch (adapter->ahw.board_type) { case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ: case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ: if (pci_func_id >= 2) adapter->portnum = pci_func_id - 2; break; default: break; } err = netxen_start_firmware(adapter, 1); if (err) goto err_out_iounmap; /* * See if the firmware gave us a virtual-physical port mapping. */ adapter->physical_port = adapter->portnum; if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { i = NXRD32(adapter, CRB_V2P(adapter->portnum)); if (i != 0x55555555) adapter->physical_port = i; } netxen_check_options(adapter); netxen_setup_intr(adapter); err = netxen_setup_netdev(adapter, netdev); if (err) goto err_out_disable_msi; pci_set_drvdata(pdev, adapter); switch (adapter->ahw.port_type) { case NETXEN_NIC_GBE: dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n", adapter->netdev->name); break; case NETXEN_NIC_XGBE: dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n", adapter->netdev->name); break; } return 0; err_out_disable_msi: netxen_teardown_intr(adapter); netxen_free_dummy_dma(adapter); err_out_iounmap: netxen_cleanup_pci_map(adapter); err_out_free_netdev: free_netdev(netdev); err_out_free_res: pci_release_regions(pdev); err_out_disable_pdev: pci_set_drvdata(pdev, NULL); pci_disable_device(pdev); return err; } static void __devexit netxen_nic_remove(struct pci_dev *pdev) { struct netxen_adapter *adapter; struct net_device *netdev; adapter = pci_get_drvdata(pdev); if (adapter == NULL) return; netdev = adapter->netdev; unregister_netdev(netdev); netxen_nic_detach(adapter); if (adapter->portnum == 0) netxen_free_dummy_dma(adapter); netxen_teardown_intr(adapter); netxen_free_sds_rings(&adapter->recv_ctx); netxen_cleanup_pci_map(adapter); netxen_release_firmware(adapter); pci_release_regions(pdev); pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); free_netdev(netdev); } #ifdef CONFIG_PM static int netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state) { struct netxen_adapter *adapter = pci_get_drvdata(pdev); struct net_device *netdev = adapter->netdev; netif_device_detach(netdev); if (netif_running(netdev)) netxen_nic_down(adapter, netdev); netxen_nic_detach(adapter); pci_save_state(pdev); if (netxen_nic_wol_supported(adapter)) { pci_enable_wake(pdev, PCI_D3cold, 1); pci_enable_wake(pdev, PCI_D3hot, 1); } pci_disable_device(pdev); pci_set_power_state(pdev, pci_choose_state(pdev, state)); return 0; } static int netxen_nic_resume(struct pci_dev *pdev) { struct netxen_adapter *adapter = pci_get_drvdata(pdev); struct net_device *netdev = adapter->netdev; int err; pci_set_power_state(pdev, PCI_D0); pci_restore_state(pdev); err = pci_enable_device(pdev); if (err) return err; adapter->curr_window = 255; err = netxen_start_firmware(adapter, 0); if (err) { dev_err(&pdev->dev, "failed to start firmware\n"); return err; } if (netif_running(netdev)) { err = netxen_nic_attach(adapter); if (err) return err; err = netxen_nic_up(adapter, netdev); if (err) return err; netif_device_attach(netdev); } return 0; } #endif static int netxen_nic_open(struct net_device *netdev) { struct netxen_adapter *adapter = netdev_priv(netdev); int err = 0; if (adapter->driver_mismatch) return -EIO; err = netxen_nic_attach(adapter); if (err) return err; err = netxen_nic_up(adapter, netdev); if (err) goto err_out; netif_start_queue(netdev); return 0; err_out: netxen_nic_detach(adapter); return err; } /* * netxen_nic_close - Disables a network interface entry point */ static int netxen_nic_close(struct net_device *netdev) { struct netxen_adapter *adapter = netdev_priv(netdev); netxen_nic_down(adapter, netdev); return 0; } static void netxen_tso_check(struct net_device *netdev, struct nx_host_tx_ring *tx_ring, struct cmd_desc_type0 *first_desc, struct sk_buff *skb) { u8 opcode = TX_ETHER_PKT; __be16 protocol = skb->protocol; u16 flags = 0, vid = 0; u32 producer; int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0; struct cmd_desc_type0 *hwdesc; struct vlan_ethhdr *vh; if (protocol == cpu_to_be16(ETH_P_8021Q)) { vh = (struct vlan_ethhdr *)skb->data; protocol = vh->h_vlan_encapsulated_proto; flags = FLAGS_VLAN_TAGGED; } else if (vlan_tx_tag_present(skb)) { flags = FLAGS_VLAN_OOB; vid = vlan_tx_tag_get(skb); netxen_set_tx_vlan_tci(first_desc, vid); vlan_oob = 1; } if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) && skb_shinfo(skb)->gso_size > 0) { hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); first_desc->total_hdr_length = hdr_len; if (vlan_oob) { first_desc->total_hdr_length += VLAN_HLEN; first_desc->tcp_hdr_offset = VLAN_HLEN; first_desc->ip_hdr_offset = VLAN_HLEN; /* Only in case of TSO on vlan device */ flags |= FLAGS_VLAN_TAGGED; } opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ? TX_TCP_LSO6 : TX_TCP_LSO; tso = 1; } else if (skb->ip_summed == CHECKSUM_PARTIAL) { u8 l4proto; if (protocol == cpu_to_be16(ETH_P_IP)) { l4proto = ip_hdr(skb)->protocol; if (l4proto == IPPROTO_TCP) opcode = TX_TCP_PKT; else if(l4proto == IPPROTO_UDP) opcode = TX_UDP_PKT; } else if (protocol == cpu_to_be16(ETH_P_IPV6)) { l4proto = ipv6_hdr(skb)->nexthdr; if (l4proto == IPPROTO_TCP) opcode = TX_TCPV6_PKT; else if(l4proto == IPPROTO_UDP) opcode = TX_UDPV6_PKT; } } first_desc->tcp_hdr_offset += skb_transport_offset(skb); first_desc->ip_hdr_offset += skb_network_offset(skb); netxen_set_tx_flags_opcode(first_desc, flags, opcode); if (!tso) return; /* For LSO, we need to copy the MAC/IP/TCP headers into * the descriptor ring */ producer = tx_ring->producer; copied = 0; offset = 2; if (vlan_oob) { /* Create a TSO vlan header template for firmware */ hwdesc = &tx_ring->desc_head[producer]; tx_ring->cmd_buf_arr[producer].skb = NULL; copy_len = min((int)sizeof(struct cmd_desc_type0) - offset, hdr_len + VLAN_HLEN); vh = (struct vlan_ethhdr *)((char *)hwdesc + 2); skb_copy_from_linear_data(skb, vh, 12); vh->h_vlan_proto = htons(ETH_P_8021Q); vh->h_vlan_TCI = htons(vid); skb_copy_from_linear_data_offset(skb, 12, (char *)vh + 16, copy_len - 16); copied = copy_len - VLAN_HLEN; offset = 0; producer = get_next_index(producer, tx_ring->num_desc); } while (copied < hdr_len) { copy_len = min((int)sizeof(struct cmd_desc_type0) - offset, (hdr_len - copied)); hwdesc = &tx_ring->desc_head[producer]; tx_ring->cmd_buf_arr[producer].skb = NULL; skb_copy_from_linear_data_offset(skb, copied, (char *)hwdesc + offset, copy_len); copied += copy_len; offset = 0; producer = get_next_index(producer, tx_ring->num_desc); } tx_ring->producer = producer; barrier(); } static void netxen_clean_tx_dma_mapping(struct pci_dev *pdev, struct netxen_cmd_buffer *pbuf, int last) { int k; struct netxen_skb_frag *buffrag; buffrag = &pbuf->frag_array[0]; pci_unmap_single(pdev, buffrag->dma, buffrag->length, PCI_DMA_TODEVICE); for (k = 1; k < last; k++) { buffrag = &pbuf->frag_array[k]; pci_unmap_page(pdev, buffrag->dma, buffrag->length, PCI_DMA_TODEVICE); } } static inline void netxen_clear_cmddesc(u64 *desc) { desc[0] = 0ULL; desc[2] = 0ULL; } static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) { struct netxen_adapter *adapter = netdev_priv(netdev); struct nx_host_tx_ring *tx_ring = adapter->tx_ring; struct skb_frag_struct *frag; struct netxen_cmd_buffer *pbuf; struct netxen_skb_frag *buffrag; struct cmd_desc_type0 *hwdesc, *first_desc; struct pci_dev *pdev; dma_addr_t temp_dma; int i, k; unsigned long offset; u32 producer; int len, frag_count, no_of_desc; u32 num_txd = tx_ring->num_desc; frag_count = skb_shinfo(skb)->nr_frags + 1; /* 4 fragments per cmd des */ no_of_desc = (frag_count + 3) >> 2; if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) { netif_stop_queue(netdev); return NETDEV_TX_BUSY; } producer = tx_ring->producer; pdev = adapter->pdev; len = skb->len - skb->data_len; temp_dma = pci_map_single(pdev, skb->data, len, PCI_DMA_TODEVICE); if (pci_dma_mapping_error(pdev, temp_dma)) goto drop_packet; pbuf = &tx_ring->cmd_buf_arr[producer]; pbuf->skb = skb; pbuf->frag_count = frag_count; buffrag = &pbuf->frag_array[0]; buffrag->dma = temp_dma; buffrag->length = len; first_desc = hwdesc = &tx_ring->desc_head[producer]; netxen_clear_cmddesc((u64 *)hwdesc); netxen_set_tx_frags_len(hwdesc, frag_count, skb->len); netxen_set_tx_port(hwdesc, adapter->portnum); hwdesc->buffer_length[0] = cpu_to_le16(len); hwdesc->addr_buffer1 = cpu_to_le64(temp_dma); for (i = 1, k = 1; i < frag_count; i++, k++) { /* move to next desc. if there is a need */ if ((i & 0x3) == 0) { k = 0; producer = get_next_index(producer, num_txd); hwdesc = &tx_ring->desc_head[producer]; netxen_clear_cmddesc((u64 *)hwdesc); pbuf = &tx_ring->cmd_buf_arr[producer]; pbuf->skb = NULL; } buffrag = &pbuf->frag_array[i]; frag = &skb_shinfo(skb)->frags[i - 1]; len = frag->size; offset = frag->page_offset; temp_dma = pci_map_page(pdev, frag->page, offset, len, PCI_DMA_TODEVICE); if (pci_dma_mapping_error(pdev, temp_dma)) { netxen_clean_tx_dma_mapping(pdev, pbuf, i); goto drop_packet; } buffrag->dma = temp_dma; buffrag->length = len; hwdesc->buffer_length[k] = cpu_to_le16(len); switch (k) { case 0: hwdesc->addr_buffer1 = cpu_to_le64(temp_dma); break; case 1: hwdesc->addr_buffer2 = cpu_to_le64(temp_dma); break; case 2: hwdesc->addr_buffer3 = cpu_to_le64(temp_dma); break; case 3: hwdesc->addr_buffer4 = cpu_to_le64(temp_dma); break; } } tx_ring->producer = get_next_index(producer, num_txd); netxen_tso_check(netdev, tx_ring, first_desc, skb); netxen_nic_update_cmd_producer(adapter, tx_ring); adapter->stats.txbytes += skb->len; adapter->stats.xmitcalled++; return NETDEV_TX_OK; drop_packet: adapter->stats.txdropped++; dev_kfree_skb_any(skb); return NETDEV_TX_OK; } static int netxen_nic_check_temp(struct netxen_adapter *adapter) { struct net_device *netdev = adapter->netdev; uint32_t temp, temp_state, temp_val; int rv = 0; temp = NXRD32(adapter, CRB_TEMP_STATE); temp_state = nx_get_temp_state(temp); temp_val = nx_get_temp_val(temp); if (temp_state == NX_TEMP_PANIC) { printk(KERN_ALERT "%s: Device temperature %d degrees C exceeds" " maximum allowed. Hardware has been shut down.\n", netdev->name, temp_val); netif_device_detach(netdev); netxen_nic_down(adapter, netdev); netxen_nic_detach(adapter); 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); } if (!adapter->has_link_events) netxen_nic_set_link_parameters(adapter); } 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); } if (!adapter->has_link_events) netxen_nic_set_link_parameters(adapter); } } static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter) { u32 val, port, linkup; port = adapter->physical_port; if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { val = NXRD32(adapter, CRB_XG_STATE_P3); val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val); linkup = (val == XG_LINK_UP_P3); } else { val = NXRD32(adapter, CRB_XG_STATE); if (adapter->ahw.port_type == NETXEN_NIC_GBE) linkup = (val >> port) & 1; else { val = (val >> port*8) & 0xff; linkup = (val == XG_LINK_UP); } } netxen_advert_link_change(adapter, linkup); } static void netxen_watchdog(unsigned long v) { struct netxen_adapter *adapter = (struct netxen_adapter *)v; SCHEDULE_WORK(&adapter->watchdog_task); } void netxen_watchdog_task(struct work_struct *work) { struct netxen_adapter *adapter = container_of(work, struct netxen_adapter, watchdog_task); if (netxen_nic_check_temp(adapter)) return; if (!adapter->has_link_events) netxen_nic_handle_phy_intr(adapter); if (netif_running(adapter->netdev)) mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); } static void netxen_tx_timeout(struct net_device *netdev) { struct netxen_adapter *adapter = (struct netxen_adapter *) netdev_priv(netdev); dev_err(&netdev->dev, "transmit timeout, resetting.\n"); SCHEDULE_WORK(&adapter->tx_timeout_task); } static void netxen_reset_task(struct work_struct *work) { struct netxen_adapter *adapter = container_of(work, struct netxen_adapter, tx_timeout_task); if (!netif_running(adapter->netdev)) return; netxen_napi_disable(adapter); adapter->netdev->trans_start = jiffies; netxen_napi_enable(adapter); netif_wake_queue(adapter->netdev); } struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev) { struct netxen_adapter *adapter = netdev_priv(netdev); struct net_device_stats *stats = &adapter->net_stats; memset(stats, 0, sizeof(*stats)); stats->rx_packets = adapter->stats.no_rcv; stats->tx_packets = adapter->stats.xmitfinished; stats->rx_bytes = adapter->stats.rxbytes; stats->tx_bytes = adapter->stats.txbytes; stats->rx_dropped = adapter->stats.rxdropped; stats->tx_dropped = adapter->stats.txdropped; return stats; } static irqreturn_t netxen_intr(int irq, void *data) { struct nx_host_sds_ring *sds_ring = data; struct netxen_adapter *adapter = sds_ring->adapter; u32 status = 0; status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR); if (!(status & adapter->legacy_intr.int_vec_bit)) return IRQ_NONE; if (adapter->ahw.revision_id >= NX_P3_B1) { /* check interrupt state machine, to be sure */ status = adapter->pci_read_immediate(adapter, ISR_INT_STATE_REG); if (!ISR_LEGACY_INT_TRIGGERED(status)) return IRQ_NONE; } else { unsigned long our_int = 0; our_int = NXRD32(adapter, CRB_INT_VECTOR); /* not our interrupt */ if (!test_and_clear_bit((7 + adapter->portnum), &our_int)) return IRQ_NONE; /* claim interrupt */ NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff)); } /* clear interrupt */ if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) netxen_nic_disable_int(sds_ring); adapter->pci_write_immediate(adapter, adapter->legacy_intr.tgt_status_reg, 0xffffffff); /* read twice to ensure write is flushed */ adapter->pci_read_immediate(adapter, ISR_INT_VECTOR); adapter->pci_read_immediate(adapter, ISR_INT_VECTOR); napi_schedule(&sds_ring->napi); return IRQ_HANDLED; } static irqreturn_t netxen_msi_intr(int irq, void *data) { struct nx_host_sds_ring *sds_ring = data; struct netxen_adapter *adapter = sds_ring->adapter; /* clear interrupt */ adapter->pci_write_immediate(adapter, adapter->msi_tgt_status, 0xffffffff); napi_schedule(&sds_ring->napi); return IRQ_HANDLED; } static irqreturn_t netxen_msix_intr(int irq, void *data) { struct nx_host_sds_ring *sds_ring = data; napi_schedule(&sds_ring->napi); return IRQ_HANDLED; } static int netxen_nic_poll(struct napi_struct *napi, int budget) { struct nx_host_sds_ring *sds_ring = container_of(napi, struct nx_host_sds_ring, napi); struct netxen_adapter *adapter = sds_ring->adapter; int tx_complete; int work_done; tx_complete = netxen_process_cmd_ring(adapter); work_done = netxen_process_rcv_ring(sds_ring, budget); if ((work_done < budget) && tx_complete) { napi_complete(&sds_ring->napi); if (netif_running(adapter->netdev)) netxen_nic_enable_int(sds_ring); } return work_done; } #ifdef CONFIG_NET_POLL_CONTROLLER static void netxen_nic_poll_controller(struct net_device *netdev) { struct netxen_adapter *adapter = netdev_priv(netdev); disable_irq(adapter->irq); netxen_intr(adapter->irq, adapter); enable_irq(adapter->irq); } #endif #ifdef CONFIG_INET #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops) static int netxen_destip_supported(struct netxen_adapter *adapter) { if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) return 0; if (adapter->ahw.cut_through) return 0; return 1; } static int netxen_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct netxen_adapter *adapter; struct net_device *dev = (struct net_device *)ptr; struct in_device *indev; recheck: if (dev == NULL) goto done; if (dev->priv_flags & IFF_802_1Q_VLAN) { dev = vlan_dev_real_dev(dev); goto recheck; } if (!is_netxen_netdev(dev)) goto done; adapter = netdev_priv(dev); if (!adapter || !netxen_destip_supported(adapter)) goto done; if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) goto done; indev = in_dev_get(dev); if (!indev) goto done; for_ifa(indev) { switch (event) { case NETDEV_UP: netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP); break; case NETDEV_DOWN: netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN); break; default: break; } } endfor_ifa(indev); in_dev_put(indev); done: return NOTIFY_DONE; } static int netxen_inetaddr_event(struct notifier_block *this, unsigned long event, void *ptr) { struct netxen_adapter *adapter; struct net_device *dev; struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL; recheck: if (dev == NULL || !netif_running(dev)) goto done; if (dev->priv_flags & IFF_802_1Q_VLAN) { dev = vlan_dev_real_dev(dev); goto recheck; } if (!is_netxen_netdev(dev)) goto done; adapter = netdev_priv(dev); if (!adapter || !netxen_destip_supported(adapter)) goto done; if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) goto done; switch (event) { case NETDEV_UP: netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP); break; case NETDEV_DOWN: netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN); break; default: break; } done: return NOTIFY_DONE; } static struct notifier_block netxen_netdev_cb = { .notifier_call = netxen_netdev_event, }; static struct notifier_block netxen_inetaddr_cb = { .notifier_call = netxen_inetaddr_event, }; #endif static struct pci_driver netxen_driver = { .name = netxen_nic_driver_name, .id_table = netxen_pci_tbl, .probe = netxen_nic_probe, .remove = __devexit_p(netxen_nic_remove), #ifdef CONFIG_PM .suspend = netxen_nic_suspend, .resume = netxen_nic_resume #endif }; static int __init netxen_init_module(void) { printk(KERN_INFO "%s\n", netxen_nic_driver_string); if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL) return -ENOMEM; #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 destroy_workqueue(netxen_workq); } module_exit(netxen_exit_module);