| /* |
| * Copyright (C) 2003 - 2009 NetXen, Inc. |
| * All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| * MA 02111-1307, USA. |
| * |
| * The full GNU General Public License is included in this distribution |
| * in the file called LICENSE. |
| * |
| * Contact Information: |
| * info@netxen.com |
| * NetXen Inc, |
| * 18922 Forge Drive |
| * Cupertino, CA 95014-0701 |
| * |
| */ |
| |
| #include <linux/vmalloc.h> |
| #include <linux/highmem.h> |
| #include "netxen_nic_hw.h" |
| |
| #include "netxen_nic.h" |
| #include "netxen_nic_phan_reg.h" |
| |
| #include <linux/dma-mapping.h> |
| #include <linux/if_vlan.h> |
| #include <net/ip.h> |
| #include <linux/ipv6.h> |
| |
| MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID); |
| |
| char netxen_nic_driver_name[] = "netxen_nic"; |
| static char netxen_nic_driver_string[] = "NetXen Network Driver version " |
| NETXEN_NIC_LINUX_VERSIONID; |
| |
| static int port_mode = NETXEN_PORT_MODE_AUTO_NEG; |
| |
| /* Default to restricted 1G auto-neg mode */ |
| static int wol_port_mode = 5; |
| |
| static int use_msi = 1; |
| |
| static int use_msi_x = 1; |
| |
| /* Local functions to NetXen NIC driver */ |
| static int __devinit netxen_nic_probe(struct pci_dev *pdev, |
| const struct pci_device_id *ent); |
| static void __devexit netxen_nic_remove(struct pci_dev *pdev); |
| static int netxen_nic_open(struct net_device *netdev); |
| static int netxen_nic_close(struct net_device *netdev); |
| static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *); |
| static void netxen_tx_timeout(struct net_device *netdev); |
| static void netxen_tx_timeout_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, |
| uint32_t crb_producer) |
| { |
| adapter->pci_write_normalize(adapter, |
| adapter->crb_addr_cmd_producer, crb_producer); |
| } |
| |
| static uint32_t crb_cmd_consumer[4] = { |
| CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1, |
| CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3 |
| }; |
| |
| static inline void |
| netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter, |
| u32 crb_consumer) |
| { |
| adapter->pci_write_normalize(adapter, |
| adapter->crb_addr_cmd_consumer, crb_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 netxen_adapter *adapter) |
| { |
| adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0); |
| } |
| |
| static inline void netxen_nic_enable_int(struct netxen_adapter *adapter) |
| { |
| adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0x1); |
| |
| if (!NETXEN_IS_MSI_FAMILY(adapter)) |
| adapter->pci_write_immediate(adapter, |
| adapter->legacy_intr.tgt_mask_reg, 0xfbff); |
| } |
| |
| static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id) |
| { |
| struct pci_dev *pdev = adapter->pdev; |
| uint64_t mask, cmask; |
| |
| adapter->pci_using_dac = 0; |
| |
| mask = DMA_32BIT_MASK; |
| /* |
| * Consistent DMA mask is set to 32 bit because it cannot be set to |
| * 35 bits. For P3 also leave it at 32 bits for now. Only the rings |
| * come off this pool. |
| */ |
| cmask = DMA_32BIT_MASK; |
| |
| #ifndef CONFIG_IA64 |
| if (revision_id >= NX_P3_B0) |
| mask = DMA_39BIT_MASK; |
| else if (revision_id == NX_P2_C1) |
| mask = DMA_35BIT_MASK; |
| #endif |
| 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; |
| struct pci_dev *pdev = adapter->pdev; |
| |
| change = 0; |
| |
| shift = netxen_nic_reg_read(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; |
| mask = (1ULL<<(32+shift)) - 1; |
| |
| err = pci_set_dma_mask(pdev, mask); |
| if (err) |
| return pci_set_dma_mask(pdev, old_mask); |
| } |
| |
| return 0; |
| } |
| |
| static void netxen_check_options(struct netxen_adapter *adapter) |
| { |
| switch (adapter->ahw.board_type) { |
| case NETXEN_BRDTYPE_P3_HMEZ: |
| case NETXEN_BRDTYPE_P3_XG_LOM: |
| case NETXEN_BRDTYPE_P3_10G_CX4: |
| case NETXEN_BRDTYPE_P3_10G_CX4_LP: |
| case NETXEN_BRDTYPE_P3_IMEZ: |
| case NETXEN_BRDTYPE_P3_10G_SFP_PLUS: |
| case NETXEN_BRDTYPE_P3_10G_SFP_QT: |
| case NETXEN_BRDTYPE_P3_10G_SFP_CT: |
| case NETXEN_BRDTYPE_P3_10G_XFP: |
| case NETXEN_BRDTYPE_P3_10000_BASE_T: |
| adapter->msix_supported = !!use_msi_x; |
| adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G; |
| break; |
| |
| case NETXEN_BRDTYPE_P2_SB31_10G: |
| case NETXEN_BRDTYPE_P2_SB31_10G_CX4: |
| case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ: |
| case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ: |
| adapter->msix_supported = 0; |
| adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G; |
| break; |
| |
| case NETXEN_BRDTYPE_P3_REF_QG: |
| case NETXEN_BRDTYPE_P3_4_GB: |
| case NETXEN_BRDTYPE_P3_4_GB_MM: |
| adapter->msix_supported = !!use_msi_x; |
| adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G; |
| break; |
| |
| case NETXEN_BRDTYPE_P2_SB35_4G: |
| case NETXEN_BRDTYPE_P2_SB31_2G: |
| adapter->msix_supported = 0; |
| adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G; |
| break; |
| |
| case NETXEN_BRDTYPE_P3_10G_TP: |
| adapter->msix_supported = !!use_msi_x; |
| if (adapter->ahw.port_type == NETXEN_NIC_XGBE) |
| adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G; |
| else |
| adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G; |
| break; |
| |
| default: |
| adapter->msix_supported = 0; |
| adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G; |
| |
| printk(KERN_WARNING "Unknown board type(0x%x)\n", |
| adapter->ahw.board_type); |
| break; |
| } |
| |
| adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST; |
| adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS; |
| adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS; |
| |
| adapter->max_possible_rss_rings = 1; |
| return; |
| } |
| |
| 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 */ |
| adapter->pci_write_normalize(adapter, |
| NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC); |
| |
| if (!NX_IS_REVISION_P2(adapter->ahw.revision_id)) |
| return 0; |
| |
| /* PCI bus master workaround */ |
| adapter->hw_read_wx(adapter, |
| NETXEN_PCIE_REG(0x4), &first_boot, 4); |
| if (!(first_boot & 0x4)) { |
| first_boot |= 0x4; |
| adapter->hw_write_wx(adapter, |
| NETXEN_PCIE_REG(0x4), &first_boot, 4); |
| adapter->hw_read_wx(adapter, |
| NETXEN_PCIE_REG(0x4), &first_boot, 4); |
| } |
| |
| /* This is the first boot after power up */ |
| adapter->hw_read_wx(adapter, |
| NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4); |
| if (first_boot != 0x80000f) { |
| /* clear the register for future unloads/loads */ |
| adapter->pci_write_normalize(adapter, |
| NETXEN_CAM_RAM(0x1fc), 0); |
| return -EIO; |
| } |
| |
| /* Start P2 boot loader */ |
| val = adapter->pci_read_normalize(adapter, |
| NETXEN_ROMUSB_GLB_PEGTUNE_DONE); |
| adapter->pci_write_normalize(adapter, |
| NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1); |
| timeout = 0; |
| do { |
| msleep(1); |
| val = adapter->pci_read_normalize(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; |
| adapter->hw_write_wx(adapter, |
| NETXEN_PORT_MODE_ADDR, &data, 4); |
| } else if (port_mode == NETXEN_PORT_MODE_XG) { |
| data = NETXEN_PORT_MODE_XG; |
| adapter->hw_write_wx(adapter, |
| NETXEN_PORT_MODE_ADDR, &data, 4); |
| } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) { |
| data = NETXEN_PORT_MODE_AUTO_NEG_1G; |
| adapter->hw_write_wx(adapter, |
| NETXEN_PORT_MODE_ADDR, &data, 4); |
| } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) { |
| data = NETXEN_PORT_MODE_AUTO_NEG_XG; |
| adapter->hw_write_wx(adapter, |
| NETXEN_PORT_MODE_ADDR, &data, 4); |
| } else { |
| data = NETXEN_PORT_MODE_AUTO_NEG; |
| adapter->hw_write_wx(adapter, |
| NETXEN_PORT_MODE_ADDR, &data, 4); |
| } |
| |
| 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; |
| } |
| adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE, |
| &wol_port_mode, 4); |
| } |
| } |
| |
| 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 i; |
| |
| for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; 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 (netxen_is_flash_supported(adapter) != 0) |
| return -EIO; |
| |
| 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); |
| else |
| adapter->macaddr_set(adapter, netdev->dev_addr); |
| |
| return 0; |
| } |
| |
| static void netxen_set_multicast_list(struct net_device *dev) |
| { |
| struct netxen_adapter *adapter = netdev_priv(dev); |
| |
| if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) |
| netxen_p3_nic_set_multi(dev); |
| else |
| netxen_p2_nic_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; |
| |
| adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED); |
| adapter->intr_scheme = -1; |
| adapter->msi_mode = -1; |
| |
| 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); |
| if (pci_enable_msix(pdev, adapter->msix_entries, |
| MSIX_ENTRIES_PER_ADAPTER)) |
| goto request_msi; |
| |
| adapter->flags |= NETXEN_NIC_MSIX_ENABLED; |
| netxen_set_msix_bit(pdev, 1); |
| dev_info(&pdev->dev, "using msi-x interrupts\n"); |
| |
| } else { |
| request_msi: |
| if (use_msi && !pci_enable_msi(pdev)) { |
| adapter->flags |= NETXEN_NIC_MSI_ENABLED; |
| dev_info(&pdev->dev, "using msi interrupts\n"); |
| } else |
| dev_info(&pdev->dev, "using legacy interrupts\n"); |
| } |
| } |
| |
| 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_read_normalize = netxen_nic_pci_read_normalize_128M; |
| adapter->pci_write_normalize = netxen_nic_pci_write_normalize_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_read_normalize = netxen_nic_pci_read_normalize_2M; |
| adapter->pci_write_normalize = |
| netxen_nic_pci_write_normalize_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 val, err, first_boot; |
| struct pci_dev *pdev = adapter->pdev; |
| |
| int first_driver = 0; |
| if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { |
| if (adapter->ahw.pci_func == 0) |
| first_driver = 1; |
| } else { |
| if (adapter->portnum == 0) |
| first_driver = 1; |
| } |
| |
| if (!first_driver) |
| return 0; |
| |
| first_boot = adapter->pci_read_normalize(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 (first_boot != 0x55555555) { |
| adapter->pci_write_normalize(adapter, |
| CRB_CMDPEG_STATE, 0); |
| netxen_pinit_from_rom(adapter, 0); |
| msleep(1); |
| } |
| |
| netxen_nic_reg_write(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; |
| netxen_crb_writelit_adapter(adapter, |
| NETXEN_MAC_ADDR_CNTL_REG, val); |
| |
| } |
| |
| err = netxen_initialize_adapter_offload(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); |
| adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, val); |
| |
| /* Handshake with the card before we register the devices. */ |
| err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); |
| if (err) { |
| netxen_free_adapter_offload(adapter); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| netxen_nic_request_irq(struct netxen_adapter *adapter) |
| { |
| irq_handler_t handler; |
| unsigned long flags = IRQF_SAMPLE_RANDOM; |
| struct net_device *netdev = adapter->netdev; |
| |
| if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) || |
| (adapter->intr_scheme != INTR_SCHEME_PERPORT)) { |
| printk(KERN_ERR "%s: Firmware interrupt scheme is " |
| "incompatible with driver\n", |
| netdev->name); |
| adapter->driver_mismatch = 1; |
| return -EINVAL; |
| } |
| |
| 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; |
| |
| return request_irq(adapter->irq, handler, |
| flags, netdev->name, adapter); |
| } |
| |
| 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; |
| } |
| adapter->macaddr_set(adapter, netdev->dev_addr); |
| |
| netxen_nic_set_link_parameters(adapter); |
| |
| netxen_set_multicast_list(netdev); |
| if (adapter->set_mtu) |
| adapter->set_mtu(adapter, netdev->mtu); |
| |
| adapter->ahw.linkup = 0; |
| mod_timer(&adapter->watchdog_timer, jiffies); |
| |
| napi_enable(&adapter->napi); |
| netxen_nic_enable_int(adapter); |
| |
| return 0; |
| } |
| |
| static void |
| netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev) |
| { |
| netif_carrier_off(netdev); |
| netif_stop_queue(netdev); |
| napi_disable(&adapter->napi); |
| |
| if (adapter->stop_port) |
| adapter->stop_port(adapter); |
| |
| netxen_nic_disable_int(adapter); |
| |
| netxen_release_tx_buffers(adapter); |
| |
| FLUSH_SCHEDULED_WORK(); |
| del_timer_sync(&adapter->watchdog_timer); |
| } |
| |
| |
| static int |
| netxen_nic_attach(struct netxen_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| struct pci_dev *pdev = adapter->pdev; |
| int err, ring; |
| |
| err = netxen_init_firmware(adapter); |
| if (err != 0) { |
| printk(KERN_ERR "Failed to init firmware\n"); |
| return -EIO; |
| } |
| |
| if (adapter->fw_major < 4) |
| adapter->max_rds_rings = 3; |
| else |
| adapter->max_rds_rings = 2; |
| |
| 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 (adapter->fw_major < 4) { |
| adapter->crb_addr_cmd_producer = |
| crb_cmd_producer[adapter->portnum]; |
| adapter->crb_addr_cmd_consumer = |
| crb_cmd_consumer[adapter->portnum]; |
| |
| netxen_nic_update_cmd_producer(adapter, 0); |
| netxen_nic_update_cmd_consumer(adapter, 0); |
| } |
| |
| for (ring = 0; ring < adapter->max_rds_rings; ring++) |
| netxen_post_rx_buffers(adapter, 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; |
| } |
| |
| 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->irq) |
| free_irq(adapter->irq, adapter); |
| |
| netxen_release_rx_buffers(adapter); |
| netxen_free_hw_resources(adapter); |
| netxen_free_sw_resources(adapter); |
| |
| adapter->is_up = 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 (pci_func_id == 0) |
| printk(KERN_INFO "%s\n", netxen_nic_driver_string); |
| |
| 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) { |
| printk(KERN_ERR"%s: Failed to allocate memory for the " |
| "device block.Check system memory resource" |
| " usage.\n", netxen_nic_driver_name); |
| 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, revision_id); |
| if (err) |
| goto err_out_free_netdev; |
| |
| rwlock_init(&adapter->adapter_lock); |
| |
| err = netxen_setup_pci_map(adapter); |
| if (err) |
| goto err_out_free_netdev; |
| |
| netif_napi_add(netdev, &adapter->napi, |
| netxen_nic_poll, NETXEN_NETDEV_WEIGHT); |
| |
| /* This will be reset for mezz cards */ |
| adapter->portnum = pci_func_id; |
| adapter->rx_csum = 1; |
| adapter->mc_enabled = 0; |
| if (NX_IS_REVISION_P3(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->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO); |
| |
| if (NX_IS_REVISION_P3(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 (netxen_nic_get_board_info(adapter) != 0) { |
| printk("%s: Error getting board config info.\n", |
| netxen_nic_driver_name); |
| err = -EIO; |
| 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; |
| } |
| |
| /* |
| * This call will setup various max rx/tx counts. |
| * It must be done before any buffer/ring allocations. |
| */ |
| netxen_check_options(adapter); |
| |
| err = netxen_start_firmware(adapter); |
| if (err) |
| goto err_out_iounmap; |
| |
| nx_update_dma_mask(adapter); |
| |
| netxen_nic_get_firmware_info(adapter); |
| |
| /* |
| * See if the firmware gave us a virtual-physical port mapping. |
| */ |
| adapter->physical_port = adapter->portnum; |
| if (adapter->fw_major < 4) { |
| i = adapter->pci_read_normalize(adapter, |
| CRB_V2P(adapter->portnum)); |
| if (i != 0x55555555) |
| adapter->physical_port = i; |
| } |
| |
| adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED); |
| |
| netxen_set_msix_bit(pdev, 0); |
| |
| netxen_setup_intr(adapter); |
| |
| if (adapter->flags & NETXEN_NIC_MSIX_ENABLED) |
| netdev->irq = adapter->msix_entries[0].vector; |
| else |
| netdev->irq = pdev->irq; |
| |
| err = netxen_receive_peg_ready(adapter); |
| if (err) |
| goto err_out_disable_msi; |
| |
| 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_tx_timeout_task); |
| |
| err = netxen_read_mac_addr(adapter); |
| if (err) |
| dev_warn(&pdev->dev, "failed to read mac addr\n"); |
| |
| netif_carrier_off(netdev); |
| netif_stop_queue(netdev); |
| |
| if ((err = register_netdev(netdev))) { |
| printk(KERN_ERR "%s: register_netdev failed port #%d" |
| " aborting\n", netxen_nic_driver_name, |
| adapter->portnum); |
| err = -EIO; |
| 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_adapter_offload(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); |
| |
| if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) { |
| netxen_nic_detach(adapter); |
| |
| if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) |
| netxen_p3_free_mac_list(adapter); |
| } |
| |
| if (adapter->portnum == 0) |
| netxen_free_adapter_offload(adapter); |
| |
| netxen_teardown_intr(adapter); |
| |
| netxen_cleanup_pci_map(adapter); |
| |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| pci_set_drvdata(pdev, NULL); |
| |
| free_netdev(netdev); |
| } |
| |
| 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); |
| |
| if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) |
| 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); |
| 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; |
| } |
| |
| 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; |
| |
| if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) { |
| 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 bool netxen_tso_check(struct net_device *netdev, |
| struct cmd_desc_type0 *desc, struct sk_buff *skb) |
| { |
| bool tso = false; |
| u8 opcode = TX_ETHER_PKT; |
| __be16 protocol = skb->protocol; |
| u16 flags = 0; |
| |
| if (protocol == cpu_to_be16(ETH_P_8021Q)) { |
| struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data; |
| protocol = vh->h_vlan_encapsulated_proto; |
| flags = FLAGS_VLAN_TAGGED; |
| } |
| |
| if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) && |
| skb_shinfo(skb)->gso_size > 0) { |
| |
| desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
| desc->total_hdr_length = |
| skb_transport_offset(skb) + tcp_hdrlen(skb); |
| |
| opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ? |
| TX_TCP_LSO6 : TX_TCP_LSO; |
| tso = true; |
| |
| } 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; |
| } |
| } |
| desc->tcp_hdr_offset = skb_transport_offset(skb); |
| desc->ip_hdr_offset = skb_network_offset(skb); |
| netxen_set_tx_flags_opcode(desc, flags, opcode); |
| return tso; |
| } |
| |
| 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) |
| { |
| int i; |
| for (i = 0; i < 8; i++) |
| desc[i] = 0ULL; |
| } |
| |
| static int |
| netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
| { |
| struct netxen_adapter *adapter = netdev_priv(netdev); |
| struct netxen_hardware_context *hw = &adapter->ahw; |
| unsigned int first_seg_len = skb->len - skb->data_len; |
| struct netxen_cmd_buffer *pbuf; |
| struct netxen_skb_frag *buffrag; |
| struct cmd_desc_type0 *hwdesc; |
| struct pci_dev *pdev = adapter->pdev; |
| dma_addr_t temp_dma; |
| int i, k; |
| |
| u32 producer, consumer; |
| int frag_count, no_of_desc; |
| u32 num_txd = adapter->max_tx_desc_count; |
| bool is_tso = false; |
| |
| frag_count = skb_shinfo(skb)->nr_frags + 1; |
| |
| /* There 4 fragments per descriptor */ |
| no_of_desc = (frag_count + 3) >> 2; |
| |
| producer = adapter->cmd_producer; |
| smp_mb(); |
| consumer = adapter->last_cmd_consumer; |
| if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) { |
| netif_stop_queue(netdev); |
| smp_mb(); |
| return NETDEV_TX_BUSY; |
| } |
| |
| /* Copy the descriptors into the hardware */ |
| hwdesc = &hw->cmd_desc_head[producer]; |
| netxen_clear_cmddesc((u64 *)hwdesc); |
| /* Take skb->data itself */ |
| pbuf = &adapter->cmd_buf_arr[producer]; |
| |
| is_tso = netxen_tso_check(netdev, hwdesc, skb); |
| |
| pbuf->skb = skb; |
| pbuf->frag_count = frag_count; |
| buffrag = &pbuf->frag_array[0]; |
| temp_dma = pci_map_single(pdev, skb->data, first_seg_len, |
| PCI_DMA_TODEVICE); |
| if (pci_dma_mapping_error(pdev, temp_dma)) |
| goto drop_packet; |
| |
| buffrag->dma = temp_dma; |
| buffrag->length = first_seg_len; |
| netxen_set_tx_frags_len(hwdesc, frag_count, skb->len); |
| netxen_set_tx_port(hwdesc, adapter->portnum); |
| |
| hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len); |
| hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); |
| |
| for (i = 1, k = 1; i < frag_count; i++, k++) { |
| struct skb_frag_struct *frag; |
| int len, temp_len; |
| unsigned long offset; |
| |
| /* move to next desc. if there is a need */ |
| if ((i & 0x3) == 0) { |
| k = 0; |
| producer = get_next_index(producer, num_txd); |
| hwdesc = &hw->cmd_desc_head[producer]; |
| netxen_clear_cmddesc((u64 *)hwdesc); |
| pbuf = &adapter->cmd_buf_arr[producer]; |
| pbuf->skb = NULL; |
| } |
| frag = &skb_shinfo(skb)->frags[i - 1]; |
| len = frag->size; |
| offset = frag->page_offset; |
| |
| temp_len = len; |
| 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++; |
| buffrag->dma = temp_dma; |
| buffrag->length = temp_len; |
| |
| hwdesc->buffer_length[k] = cpu_to_le16(temp_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; |
| } |
| frag++; |
| } |
| producer = get_next_index(producer, num_txd); |
| |
| /* For LSO, we need to copy the MAC/IP/TCP headers into |
| * the descriptor ring |
| */ |
| if (is_tso) { |
| int hdr_len, first_hdr_len, more_hdr; |
| hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
| if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) { |
| first_hdr_len = sizeof(struct cmd_desc_type0) - 2; |
| more_hdr = 1; |
| } else { |
| first_hdr_len = hdr_len; |
| more_hdr = 0; |
| } |
| /* copy the MAC/IP/TCP headers to the cmd descriptor list */ |
| hwdesc = &hw->cmd_desc_head[producer]; |
| pbuf = &adapter->cmd_buf_arr[producer]; |
| pbuf->skb = NULL; |
| |
| /* copy the first 64 bytes */ |
| memcpy(((void *)hwdesc) + 2, |
| (void *)(skb->data), first_hdr_len); |
| producer = get_next_index(producer, num_txd); |
| |
| if (more_hdr) { |
| hwdesc = &hw->cmd_desc_head[producer]; |
| pbuf = &adapter->cmd_buf_arr[producer]; |
| pbuf->skb = NULL; |
| /* copy the next 64 bytes - should be enough except |
| * for pathological case |
| */ |
| skb_copy_from_linear_data_offset(skb, first_hdr_len, |
| hwdesc, |
| (hdr_len - |
| first_hdr_len)); |
| producer = get_next_index(producer, num_txd); |
| } |
| } |
| |
| adapter->cmd_producer = producer; |
| adapter->stats.txbytes += skb->len; |
| |
| netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer); |
| |
| adapter->stats.xmitcalled++; |
| netdev->trans_start = jiffies; |
| |
| 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 = adapter->pci_read_normalize(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", |
| netxen_nic_driver_name, temp_val); |
| |
| netif_carrier_off(netdev); |
| netif_stop_queue(netdev); |
| 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", |
| netxen_nic_driver_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", netxen_nic_driver_name, |
| temp_val); |
| } |
| } |
| adapter->temp = temp_state; |
| return rv; |
| } |
| |
| static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| u32 val, port, linkup; |
| |
| port = adapter->physical_port; |
| |
| if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { |
| val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3); |
| val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val); |
| linkup = (val == XG_LINK_UP_P3); |
| } else { |
| val = adapter->pci_read_normalize(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); |
| } |
| } |
| |
| 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); |
| } |
| |
| 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); |
| } |
| |
| netxen_nic_set_link_parameters(adapter); |
| } |
| } |
| |
| 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 ((adapter->portnum == 0) && netxen_nic_check_temp(adapter)) |
| return; |
| |
| 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); |
| SCHEDULE_WORK(&adapter->tx_timeout_task); |
| } |
| |
| static void netxen_tx_timeout_task(struct work_struct *work) |
| { |
| struct netxen_adapter *adapter = |
| container_of(work, struct netxen_adapter, tx_timeout_task); |
| |
| printk(KERN_ERR "%s %s: transmit timeout, resetting.\n", |
| netxen_nic_driver_name, adapter->netdev->name); |
| |
| netxen_nic_disable_int(adapter); |
| napi_disable(&adapter->napi); |
| |
| adapter->netdev->trans_start = jiffies; |
| |
| napi_enable(&adapter->napi); |
| netxen_nic_enable_int(adapter); |
| netif_wake_queue(adapter->netdev); |
| } |
| |
| /* |
| * netxen_nic_get_stats - Get System Network Statistics |
| * @netdev: network interface device structure |
| */ |
| 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)); |
| |
| /* total packets received */ |
| stats->rx_packets = adapter->stats.no_rcv; |
| /* total packets transmitted */ |
| stats->tx_packets = adapter->stats.xmitedframes + |
| adapter->stats.xmitfinished; |
| /* total bytes received */ |
| stats->rx_bytes = adapter->stats.rxbytes; |
| /* total bytes transmitted */ |
| stats->tx_bytes = adapter->stats.txbytes; |
| /* bad packets received */ |
| stats->rx_errors = adapter->stats.rcvdbadskb; |
| /* packet transmit problems */ |
| stats->tx_errors = adapter->stats.nocmddescriptor; |
| /* no space in linux buffers */ |
| stats->rx_dropped = adapter->stats.rxdropped; |
| /* no space available in linux */ |
| stats->tx_dropped = adapter->stats.txdropped; |
| |
| return stats; |
| } |
| |
| static irqreturn_t netxen_intr(int irq, void *data) |
| { |
| struct netxen_adapter *adapter = data; |
| 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 = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR); |
| |
| /* not our interrupt */ |
| if (!test_and_clear_bit((7 + adapter->portnum), &our_int)) |
| return IRQ_NONE; |
| |
| /* claim interrupt */ |
| adapter->pci_write_normalize(adapter, |
| CRB_INT_VECTOR, (our_int & 0xffffffff)); |
| } |
| |
| /* clear interrupt */ |
| if (adapter->fw_major < 4) |
| netxen_nic_disable_int(adapter); |
| |
| 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(&adapter->napi); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t netxen_msi_intr(int irq, void *data) |
| { |
| struct netxen_adapter *adapter = data; |
| |
| /* clear interrupt */ |
| adapter->pci_write_immediate(adapter, |
| msi_tgt_status[adapter->ahw.pci_func], 0xffffffff); |
| |
| napi_schedule(&adapter->napi); |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t netxen_msix_intr(int irq, void *data) |
| { |
| struct netxen_adapter *adapter = data; |
| |
| napi_schedule(&adapter->napi); |
| return IRQ_HANDLED; |
| } |
| |
| static int netxen_nic_poll(struct napi_struct *napi, int budget) |
| { |
| struct netxen_adapter *adapter = |
| container_of(napi, struct netxen_adapter, napi); |
| int tx_complete; |
| int work_done; |
| |
| tx_complete = netxen_process_cmd_ring(adapter); |
| |
| work_done = netxen_process_rcv_ring(adapter, budget); |
| |
| if ((work_done < budget) && tx_complete) { |
| napi_complete(&adapter->napi); |
| netxen_nic_enable_int(adapter); |
| } |
| |
| return work_done; |
| } |
| |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| static void netxen_nic_poll_controller(struct net_device *netdev) |
| { |
| struct netxen_adapter *adapter = netdev_priv(netdev); |
| disable_irq(adapter->irq); |
| netxen_intr(adapter->irq, adapter); |
| enable_irq(adapter->irq); |
| } |
| #endif |
| |
| static 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), |
| .suspend = netxen_nic_suspend, |
| .resume = netxen_nic_resume |
| }; |
| |
| /* Driver Registration on NetXen card */ |
| |
| static int __init netxen_init_module(void) |
| { |
| if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL) |
| return -ENOMEM; |
| |
| return pci_register_driver(&netxen_driver); |
| } |
| |
| module_init(netxen_init_module); |
| |
| static void __exit netxen_exit_module(void) |
| { |
| pci_unregister_driver(&netxen_driver); |
| destroy_workqueue(netxen_workq); |
| } |
| |
| module_exit(netxen_exit_module); |