diff options
Diffstat (limited to 'drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c')
| -rw-r--r-- | drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c | 3482 |
1 files changed, 3482 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c new file mode 100644 index 000000000..c005a9df5 --- /dev/null +++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c @@ -0,0 +1,3482 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2003 - 2009 NetXen, Inc. + * Copyright (C) 2009 - QLogic Corporation. + * All rights reserved. + */ + +#include <linux/slab.h> +#include <linux/vmalloc.h> +#include <linux/interrupt.h> +#include "netxen_nic_hw.h" + +#include "netxen_nic.h" + +#include <linux/dma-mapping.h> +#include <linux/if_vlan.h> +#include <net/ip.h> +#include <linux/ipv6.h> +#include <linux/inetdevice.h> +#include <linux/sysfs.h> +#include <linux/aer.h> + +MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Intelligent Ethernet Driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID); +MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME); + +char netxen_nic_driver_name[] = "netxen_nic"; +static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v" + NETXEN_NIC_LINUX_VERSIONID; + +static int port_mode = NETXEN_PORT_MODE_AUTO_NEG; + +/* Default to restricted 1G auto-neg mode */ +static int wol_port_mode = 5; + +static int use_msi = 1; + +static int use_msi_x = 1; + +static int auto_fw_reset = AUTO_FW_RESET_ENABLED; +module_param(auto_fw_reset, int, 0644); +MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled"); + +static int netxen_nic_probe(struct pci_dev *pdev, + const struct pci_device_id *ent); +static void netxen_nic_remove(struct pci_dev *pdev); +static int netxen_nic_open(struct net_device *netdev); +static int netxen_nic_close(struct net_device *netdev); +static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *, + struct net_device *); +static void netxen_tx_timeout(struct net_device *netdev, unsigned int txqueue); +static void netxen_tx_timeout_task(struct work_struct *work); +static void netxen_fw_poll_work(struct work_struct *work); +static void netxen_schedule_work(struct netxen_adapter *adapter, + work_func_t func, int delay); +static void netxen_cancel_fw_work(struct netxen_adapter *adapter); +static int netxen_nic_poll(struct napi_struct *napi, int budget); + +static void netxen_create_sysfs_entries(struct netxen_adapter *adapter); +static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter); +static void netxen_create_diag_entries(struct netxen_adapter *adapter); +static void netxen_remove_diag_entries(struct netxen_adapter *adapter); +static int nx_dev_request_aer(struct netxen_adapter *adapter); +static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter); +static int netxen_can_start_firmware(struct netxen_adapter *adapter); + +static irqreturn_t netxen_intr(int irq, void *data); +static irqreturn_t netxen_msi_intr(int irq, void *data); +static irqreturn_t netxen_msix_intr(int irq, void *data); + +static void netxen_free_ip_list(struct netxen_adapter *, bool); +static void netxen_restore_indev_addr(struct net_device *dev, unsigned long); +static void netxen_nic_get_stats(struct net_device *dev, + struct rtnl_link_stats64 *stats); +static int netxen_nic_set_mac(struct net_device *netdev, void *p); + +/* PCI Device ID Table */ +#define ENTRY(device) \ + {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \ + .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0} + +static const struct pci_device_id netxen_pci_tbl[] = { + ENTRY(PCI_DEVICE_ID_NX2031_10GXSR), + ENTRY(PCI_DEVICE_ID_NX2031_10GCX4), + ENTRY(PCI_DEVICE_ID_NX2031_4GCU), + ENTRY(PCI_DEVICE_ID_NX2031_IMEZ), + ENTRY(PCI_DEVICE_ID_NX2031_HMEZ), + ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT), + ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2), + ENTRY(PCI_DEVICE_ID_NX3031), + {0,} +}; + +MODULE_DEVICE_TABLE(pci, netxen_pci_tbl); + +static uint32_t crb_cmd_producer[4] = { + CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1, + CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3 +}; + +void +netxen_nic_update_cmd_producer(struct netxen_adapter *adapter, + struct nx_host_tx_ring *tx_ring) +{ + NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer); +} + +static uint32_t crb_cmd_consumer[4] = { + CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1, + CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3 +}; + +static inline void +netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter, + struct nx_host_tx_ring *tx_ring) +{ + NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer); +} + +static uint32_t msi_tgt_status[8] = { + ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1, + ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3, + ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5, + ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7 +}; + +static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG; + +static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring) +{ + struct netxen_adapter *adapter = sds_ring->adapter; + + NXWRIO(adapter, sds_ring->crb_intr_mask, 0); +} + +static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring) +{ + struct netxen_adapter *adapter = sds_ring->adapter; + + NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1); + + if (!NETXEN_IS_MSI_FAMILY(adapter)) + NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff); +} + +static int +netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count) +{ + int size = sizeof(struct nx_host_sds_ring) * count; + + recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL); + + return recv_ctx->sds_rings == NULL; +} + +static void +netxen_free_sds_rings(struct netxen_recv_context *recv_ctx) +{ + kfree(recv_ctx->sds_rings); + recv_ctx->sds_rings = NULL; +} + +static int +netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev) +{ + int ring; + struct nx_host_sds_ring *sds_ring; + struct netxen_recv_context *recv_ctx = &adapter->recv_ctx; + + if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings)) + return -ENOMEM; + + for (ring = 0; ring < adapter->max_sds_rings; ring++) { + sds_ring = &recv_ctx->sds_rings[ring]; + netif_napi_add(netdev, &sds_ring->napi, netxen_nic_poll); + } + + return 0; +} + +static void +netxen_napi_del(struct netxen_adapter *adapter) +{ + int ring; + struct nx_host_sds_ring *sds_ring; + struct netxen_recv_context *recv_ctx = &adapter->recv_ctx; + + for (ring = 0; ring < adapter->max_sds_rings; ring++) { + sds_ring = &recv_ctx->sds_rings[ring]; + netif_napi_del(&sds_ring->napi); + } + + netxen_free_sds_rings(&adapter->recv_ctx); +} + +static void +netxen_napi_enable(struct netxen_adapter *adapter) +{ + int ring; + struct nx_host_sds_ring *sds_ring; + struct netxen_recv_context *recv_ctx = &adapter->recv_ctx; + + for (ring = 0; ring < adapter->max_sds_rings; ring++) { + sds_ring = &recv_ctx->sds_rings[ring]; + napi_enable(&sds_ring->napi); + netxen_nic_enable_int(sds_ring); + } +} + +static void +netxen_napi_disable(struct netxen_adapter *adapter) +{ + int ring; + struct nx_host_sds_ring *sds_ring; + struct netxen_recv_context *recv_ctx = &adapter->recv_ctx; + + for (ring = 0; ring < adapter->max_sds_rings; ring++) { + sds_ring = &recv_ctx->sds_rings[ring]; + netxen_nic_disable_int(sds_ring); + napi_synchronize(&sds_ring->napi); + napi_disable(&sds_ring->napi); + } +} + +static int nx_set_dma_mask(struct netxen_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + uint64_t mask, cmask; + + adapter->pci_using_dac = 0; + + mask = DMA_BIT_MASK(32); + cmask = DMA_BIT_MASK(32); + + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { +#ifndef CONFIG_IA64 + mask = DMA_BIT_MASK(35); +#endif + } else { + mask = DMA_BIT_MASK(39); + cmask = mask; + } + + if (dma_set_mask(&pdev->dev, mask) == 0 && + dma_set_coherent_mask(&pdev->dev, cmask) == 0) { + adapter->pci_using_dac = 1; + return 0; + } + + return -EIO; +} + +/* Update addressable range if firmware supports it */ +static int +nx_update_dma_mask(struct netxen_adapter *adapter) +{ + int change, shift, err; + uint64_t mask, old_mask, old_cmask; + struct pci_dev *pdev = adapter->pdev; + + change = 0; + + shift = NXRD32(adapter, CRB_DMA_SHIFT); + if (shift > 32) + return 0; + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9)) + change = 1; + else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4)) + change = 1; + + if (change) { + old_mask = pdev->dma_mask; + old_cmask = pdev->dev.coherent_dma_mask; + + mask = DMA_BIT_MASK(32+shift); + + err = dma_set_mask(&pdev->dev, mask); + if (err) + goto err_out; + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { + + err = dma_set_coherent_mask(&pdev->dev, mask); + if (err) + goto err_out; + } + dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift); + } + + return 0; + +err_out: + dma_set_mask(&pdev->dev, old_mask); + dma_set_coherent_mask(&pdev->dev, old_cmask); + return err; +} + +static int +netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot) +{ + u32 val, timeout; + + if (first_boot == 0x55555555) { + /* This is the first boot after power up */ + NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC); + + if (!NX_IS_REVISION_P2(adapter->ahw.revision_id)) + return 0; + + /* PCI bus master workaround */ + first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4)); + if (!(first_boot & 0x4)) { + first_boot |= 0x4; + NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot); + NXRD32(adapter, NETXEN_PCIE_REG(0x4)); + } + + /* This is the first boot after power up */ + first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET); + if (first_boot != 0x80000f) { + /* clear the register for future unloads/loads */ + NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0); + return -EIO; + } + + /* Start P2 boot loader */ + val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE); + NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1); + timeout = 0; + do { + msleep(1); + val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc)); + + if (++timeout > 5000) + return -EIO; + + } while (val == NETXEN_BDINFO_MAGIC); + } + return 0; +} + +static void netxen_set_port_mode(struct netxen_adapter *adapter) +{ + u32 val, data; + + val = adapter->ahw.board_type; + if ((val == NETXEN_BRDTYPE_P3_HMEZ) || + (val == NETXEN_BRDTYPE_P3_XG_LOM)) { + if (port_mode == NETXEN_PORT_MODE_802_3_AP) { + data = NETXEN_PORT_MODE_802_3_AP; + NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data); + } else if (port_mode == NETXEN_PORT_MODE_XG) { + data = NETXEN_PORT_MODE_XG; + NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data); + } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) { + data = NETXEN_PORT_MODE_AUTO_NEG_1G; + NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data); + } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) { + data = NETXEN_PORT_MODE_AUTO_NEG_XG; + NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data); + } else { + data = NETXEN_PORT_MODE_AUTO_NEG; + NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data); + } + + if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) && + (wol_port_mode != NETXEN_PORT_MODE_XG) && + (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) && + (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) { + wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG; + } + NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode); + } +} + +#define PCI_CAP_ID_GEN 0x10 + +static void netxen_pcie_strap_init(struct netxen_adapter *adapter) +{ + u32 pdevfuncsave; + u32 c8c9value = 0; + u32 chicken = 0; + u32 control = 0; + int i, pos; + struct pci_dev *pdev; + + pdev = adapter->pdev; + + chicken = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3)); + /* clear chicken3.25:24 */ + chicken &= 0xFCFFFFFF; + /* + * if gen1 and B0, set F1020 - if gen 2, do nothing + * if gen2 set to F1000 + */ + pos = pci_find_capability(pdev, PCI_CAP_ID_GEN); + if (pos == 0xC0) { + pci_read_config_dword(pdev, pos + 0x10, &control); + if ((control & 0x000F0000) != 0x00020000) { + /* set chicken3.24 if gen1 */ + chicken |= 0x01000000; + } + dev_info(&adapter->pdev->dev, "Gen2 strapping detected\n"); + c8c9value = 0xF1000; + } else { + /* set chicken3.24 if gen1 */ + chicken |= 0x01000000; + dev_info(&adapter->pdev->dev, "Gen1 strapping detected\n"); + if (adapter->ahw.revision_id == NX_P3_B0) + c8c9value = 0xF1020; + else + c8c9value = 0; + } + + NXWR32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3), chicken); + + if (!c8c9value) + return; + + pdevfuncsave = pdev->devfn; + if (pdevfuncsave & 0x07) + return; + + for (i = 0; i < 8; i++) { + pci_read_config_dword(pdev, pos + 8, &control); + pci_read_config_dword(pdev, pos + 8, &control); + pci_write_config_dword(pdev, pos + 8, c8c9value); + pdev->devfn++; + } + pdev->devfn = pdevfuncsave; +} + +static void netxen_set_msix_bit(struct pci_dev *pdev, int enable) +{ + u32 control; + + if (pdev->msix_cap) { + pci_read_config_dword(pdev, pdev->msix_cap, &control); + if (enable) + control |= PCI_MSIX_FLAGS_ENABLE; + else + control = 0; + pci_write_config_dword(pdev, pdev->msix_cap, control); + } +} + +static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count) +{ + int i; + + for (i = 0; i < count; i++) + adapter->msix_entries[i].entry = i; +} + +static int +netxen_read_mac_addr(struct netxen_adapter *adapter) +{ + int i; + unsigned char *p; + u64 mac_addr; + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + u8 addr[ETH_ALEN]; + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { + if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0) + return -EIO; + } else { + if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0) + return -EIO; + } + + p = (unsigned char *)&mac_addr; + for (i = 0; i < 6; i++) + addr[i] = *(p + 5 - i); + eth_hw_addr_set(netdev, addr); + + memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len); + + /* set station address */ + + if (!is_valid_ether_addr(netdev->dev_addr)) + dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr); + + return 0; +} + +static int netxen_nic_set_mac(struct net_device *netdev, void *p) +{ + struct netxen_adapter *adapter = netdev_priv(netdev); + struct sockaddr *addr = p; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + if (netif_running(netdev)) { + netif_device_detach(netdev); + netxen_napi_disable(adapter); + } + + memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len); + eth_hw_addr_set(netdev, addr->sa_data); + adapter->macaddr_set(adapter, addr->sa_data); + + if (netif_running(netdev)) { + netif_device_attach(netdev); + netxen_napi_enable(adapter); + } + return 0; +} + +static void netxen_set_multicast_list(struct net_device *dev) +{ + struct netxen_adapter *adapter = netdev_priv(dev); + + adapter->set_multi(dev); +} + +static netdev_features_t netxen_fix_features(struct net_device *dev, + netdev_features_t features) +{ + if (!(features & NETIF_F_RXCSUM)) { + netdev_info(dev, "disabling LRO as RXCSUM is off\n"); + + features &= ~NETIF_F_LRO; + } + + return features; +} + +static int netxen_set_features(struct net_device *dev, + netdev_features_t features) +{ + struct netxen_adapter *adapter = netdev_priv(dev); + int hw_lro; + + if (!((dev->features ^ features) & NETIF_F_LRO)) + return 0; + + hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED + : NETXEN_NIC_LRO_DISABLED; + + if (netxen_config_hw_lro(adapter, hw_lro)) + return -EIO; + + if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter)) + return -EIO; + + return 0; +} + +static const struct net_device_ops netxen_netdev_ops = { + .ndo_open = netxen_nic_open, + .ndo_stop = netxen_nic_close, + .ndo_start_xmit = netxen_nic_xmit_frame, + .ndo_get_stats64 = netxen_nic_get_stats, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_rx_mode = netxen_set_multicast_list, + .ndo_set_mac_address = netxen_nic_set_mac, + .ndo_change_mtu = netxen_nic_change_mtu, + .ndo_tx_timeout = netxen_tx_timeout, + .ndo_fix_features = netxen_fix_features, + .ndo_set_features = netxen_set_features, +}; + +static inline void netxen_set_interrupt_mode(struct netxen_adapter *adapter, + u32 mode) +{ + NXWR32(adapter, NETXEN_INTR_MODE_REG, mode); +} + +static inline u32 netxen_get_interrupt_mode(struct netxen_adapter *adapter) +{ + return NXRD32(adapter, NETXEN_INTR_MODE_REG); +} + +static void +netxen_initialize_interrupt_registers(struct netxen_adapter *adapter) +{ + struct netxen_legacy_intr_set *legacy_intrp; + u32 tgt_status_reg, int_state_reg; + + if (adapter->ahw.revision_id >= NX_P3_B0) + legacy_intrp = &legacy_intr[adapter->ahw.pci_func]; + else + legacy_intrp = &legacy_intr[0]; + + tgt_status_reg = legacy_intrp->tgt_status_reg; + int_state_reg = ISR_INT_STATE_REG; + + adapter->int_vec_bit = legacy_intrp->int_vec_bit; + adapter->tgt_status_reg = netxen_get_ioaddr(adapter, tgt_status_reg); + adapter->tgt_mask_reg = netxen_get_ioaddr(adapter, + legacy_intrp->tgt_mask_reg); + adapter->pci_int_reg = netxen_get_ioaddr(adapter, + legacy_intrp->pci_int_reg); + adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR); + + if (adapter->ahw.revision_id >= NX_P3_B1) + adapter->crb_int_state_reg = netxen_get_ioaddr(adapter, + int_state_reg); + else + adapter->crb_int_state_reg = netxen_get_ioaddr(adapter, + CRB_INT_VECTOR); +} + +static int netxen_setup_msi_interrupts(struct netxen_adapter *adapter, + int num_msix) +{ + struct pci_dev *pdev = adapter->pdev; + u32 value; + int err; + + if (adapter->msix_supported) { + netxen_init_msix_entries(adapter, num_msix); + err = pci_enable_msix_range(pdev, adapter->msix_entries, + num_msix, num_msix); + if (err > 0) { + adapter->flags |= NETXEN_NIC_MSIX_ENABLED; + netxen_set_msix_bit(pdev, 1); + + if (adapter->rss_supported) + adapter->max_sds_rings = num_msix; + + dev_info(&pdev->dev, "using msi-x interrupts\n"); + return 0; + } + /* fall through for msi */ + } + + if (use_msi && !pci_enable_msi(pdev)) { + value = msi_tgt_status[adapter->ahw.pci_func]; + adapter->flags |= NETXEN_NIC_MSI_ENABLED; + adapter->tgt_status_reg = netxen_get_ioaddr(adapter, value); + adapter->msix_entries[0].vector = pdev->irq; + dev_info(&pdev->dev, "using msi interrupts\n"); + return 0; + } + + dev_err(&pdev->dev, "Failed to acquire MSI-X/MSI interrupt vector\n"); + return -EIO; +} + +static int netxen_setup_intr(struct netxen_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + int num_msix; + + if (adapter->rss_supported) + num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ? + MSIX_ENTRIES_PER_ADAPTER : 2; + else + num_msix = 1; + + adapter->max_sds_rings = 1; + adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED); + + netxen_initialize_interrupt_registers(adapter); + netxen_set_msix_bit(pdev, 0); + + if (adapter->portnum == 0) { + if (!netxen_setup_msi_interrupts(adapter, num_msix)) + netxen_set_interrupt_mode(adapter, NETXEN_MSI_MODE); + else + netxen_set_interrupt_mode(adapter, NETXEN_INTX_MODE); + } else { + if (netxen_get_interrupt_mode(adapter) == NETXEN_MSI_MODE && + netxen_setup_msi_interrupts(adapter, num_msix)) { + dev_err(&pdev->dev, "Co-existence of MSI-X/MSI and INTx interrupts is not supported\n"); + return -EIO; + } + } + + if (!NETXEN_IS_MSI_FAMILY(adapter)) { + adapter->msix_entries[0].vector = pdev->irq; + dev_info(&pdev->dev, "using legacy interrupts\n"); + } + return 0; +} + +static void +netxen_teardown_intr(struct netxen_adapter *adapter) +{ + if (adapter->flags & NETXEN_NIC_MSIX_ENABLED) + pci_disable_msix(adapter->pdev); + if (adapter->flags & NETXEN_NIC_MSI_ENABLED) + pci_disable_msi(adapter->pdev); +} + +static void +netxen_cleanup_pci_map(struct netxen_adapter *adapter) +{ + if (adapter->ahw.db_base != NULL) + iounmap(adapter->ahw.db_base); + if (adapter->ahw.pci_base0 != NULL) + iounmap(adapter->ahw.pci_base0); + if (adapter->ahw.pci_base1 != NULL) + iounmap(adapter->ahw.pci_base1); + if (adapter->ahw.pci_base2 != NULL) + iounmap(adapter->ahw.pci_base2); +} + +static int +netxen_setup_pci_map(struct netxen_adapter *adapter) +{ + void __iomem *db_ptr = NULL; + + resource_size_t mem_base, db_base; + unsigned long mem_len, db_len = 0; + + struct pci_dev *pdev = adapter->pdev; + int pci_func = adapter->ahw.pci_func; + struct netxen_hardware_context *ahw = &adapter->ahw; + + int err = 0; + + /* + * Set the CRB window to invalid. If any register in window 0 is + * accessed it should set the window to 0 and then reset it to 1. + */ + adapter->ahw.crb_win = -1; + adapter->ahw.ocm_win = -1; + + /* remap phys address */ + mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ + mem_len = pci_resource_len(pdev, 0); + + /* 128 Meg of memory */ + if (mem_len == NETXEN_PCI_128MB_SIZE) { + + ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE); + ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START, + SECOND_PAGE_GROUP_SIZE); + ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START, + THIRD_PAGE_GROUP_SIZE); + if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL || + ahw->pci_base2 == NULL) { + dev_err(&pdev->dev, "failed to map PCI bar 0\n"); + err = -EIO; + goto err_out; + } + + ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE; + + } else if (mem_len == NETXEN_PCI_32MB_SIZE) { + + ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE); + ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START - + SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); + if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) { + dev_err(&pdev->dev, "failed to map PCI bar 0\n"); + err = -EIO; + goto err_out; + } + + } else if (mem_len == NETXEN_PCI_2MB_SIZE) { + + ahw->pci_base0 = pci_ioremap_bar(pdev, 0); + if (ahw->pci_base0 == NULL) { + dev_err(&pdev->dev, "failed to map PCI bar 0\n"); + return -EIO; + } + ahw->pci_len0 = mem_len; + } else { + return -EIO; + } + + netxen_setup_hwops(adapter); + + dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20)); + + if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) { + adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter, + NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func))); + + } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { + adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter, + NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func))); + } + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) + goto skip_doorbell; + + db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ + db_len = pci_resource_len(pdev, 4); + + if (db_len == 0) { + printk(KERN_ERR "%s: doorbell is disabled\n", + netxen_nic_driver_name); + err = -EIO; + goto err_out; + } + + db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES); + if (!db_ptr) { + printk(KERN_ERR "%s: Failed to allocate doorbell map.", + netxen_nic_driver_name); + err = -EIO; + goto err_out; + } + +skip_doorbell: + adapter->ahw.db_base = db_ptr; + adapter->ahw.db_len = db_len; + return 0; + +err_out: + netxen_cleanup_pci_map(adapter); + return err; +} + +static void +netxen_check_options(struct netxen_adapter *adapter) +{ + u32 fw_major, fw_minor, fw_build, prev_fw_version; + char brd_name[NETXEN_MAX_SHORT_NAME]; + char serial_num[32]; + int i, offset, val, err; + __le32 *ptr32; + struct pci_dev *pdev = adapter->pdev; + + adapter->driver_mismatch = 0; + + ptr32 = (__le32 *)&serial_num; + offset = NX_FW_SERIAL_NUM_OFFSET; + for (i = 0; i < 8; i++) { + err = netxen_rom_fast_read(adapter, offset, &val); + if (err) { + dev_err(&pdev->dev, "error reading board info\n"); + adapter->driver_mismatch = 1; + return; + } + ptr32[i] = cpu_to_le32(val); + offset += sizeof(u32); + } + + fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR); + fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR); + fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB); + prev_fw_version = adapter->fw_version; + adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build); + + /* Get FW Mini Coredump template and store it */ + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { + if (adapter->mdump.md_template == NULL || + adapter->fw_version > prev_fw_version) { + kfree(adapter->mdump.md_template); + adapter->mdump.md_template = NULL; + err = netxen_setup_minidump(adapter); + if (err) + dev_err(&adapter->pdev->dev, + "Failed to setup minidump rcode = %d\n", err); + } + } + + if (adapter->portnum == 0) { + if (netxen_nic_get_brd_name_by_type(adapter->ahw.board_type, + brd_name)) + strcpy(serial_num, "Unknown"); + + pr_info("%s: %s Board S/N %s Chip rev 0x%x\n", + module_name(THIS_MODULE), + brd_name, serial_num, adapter->ahw.revision_id); + } + + if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) { + adapter->driver_mismatch = 1; + dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n", + fw_major, fw_minor, fw_build); + return; + } + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { + i = NXRD32(adapter, NETXEN_SRE_MISC); + adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0; + } + + dev_info(&pdev->dev, "Driver v%s, firmware v%d.%d.%d [%s]\n", + NETXEN_NIC_LINUX_VERSIONID, fw_major, fw_minor, fw_build, + adapter->ahw.cut_through ? "cut-through" : "legacy"); + + if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222)) + adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1); + + if (adapter->ahw.port_type == NETXEN_NIC_XGBE) { + adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G; + adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G; + } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) { + adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G; + adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G; + } + + adapter->msix_supported = 0; + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { + adapter->msix_supported = !!use_msi_x; + adapter->rss_supported = !!use_msi_x; + } else { + u32 flashed_ver = 0; + netxen_rom_fast_read(adapter, + NX_FW_VERSION_OFFSET, (int *)&flashed_ver); + flashed_ver = NETXEN_DECODE_VERSION(flashed_ver); + + if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) { + switch (adapter->ahw.board_type) { + case NETXEN_BRDTYPE_P2_SB31_10G: + case NETXEN_BRDTYPE_P2_SB31_10G_CX4: + adapter->msix_supported = !!use_msi_x; + adapter->rss_supported = !!use_msi_x; + break; + default: + break; + } + } + } + + adapter->num_txd = MAX_CMD_DESCRIPTORS; + + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { + adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS; + adapter->max_rds_rings = 3; + } else { + adapter->num_lro_rxd = 0; + adapter->max_rds_rings = 2; + } +} + +static int +netxen_start_firmware(struct netxen_adapter *adapter) +{ + int val, err, first_boot; + struct pci_dev *pdev = adapter->pdev; + + /* required for NX2031 dummy dma */ + err = nx_set_dma_mask(adapter); + if (err) + return err; + + err = netxen_can_start_firmware(adapter); + + if (err < 0) + return err; + + if (!err) + goto wait_init; + + first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc)); + + err = netxen_check_hw_init(adapter, first_boot); + if (err) { + dev_err(&pdev->dev, "error in init HW init sequence\n"); + return err; + } + + netxen_request_firmware(adapter); + + err = netxen_need_fw_reset(adapter); + if (err < 0) + goto err_out; + if (err == 0) + goto pcie_strap_init; + + if (first_boot != 0x55555555) { + NXWR32(adapter, CRB_CMDPEG_STATE, 0); + netxen_pinit_from_rom(adapter); + msleep(1); + } + + NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555); + NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0); + NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0); + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) + netxen_set_port_mode(adapter); + + err = netxen_load_firmware(adapter); + if (err) + goto err_out; + + netxen_release_firmware(adapter); + + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { + + /* Initialize multicast addr pool owners */ + val = 0x7654; + if (adapter->ahw.port_type == NETXEN_NIC_XGBE) + val |= 0x0f000000; + NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val); + + } + + err = netxen_init_dummy_dma(adapter); + if (err) + goto err_out; + + /* + * Tell the hardware our version number. + */ + val = (_NETXEN_NIC_LINUX_MAJOR << 16) + | ((_NETXEN_NIC_LINUX_MINOR << 8)) + | (_NETXEN_NIC_LINUX_SUBVERSION); + NXWR32(adapter, CRB_DRIVER_VERSION, val); + +pcie_strap_init: + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) + netxen_pcie_strap_init(adapter); + +wait_init: + /* Handshake with the card before we register the devices. */ + err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); + if (err) { + netxen_free_dummy_dma(adapter); + goto err_out; + } + + NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY); + + nx_update_dma_mask(adapter); + + netxen_check_options(adapter); + + adapter->need_fw_reset = 0; + + /* fall through and release firmware */ + +err_out: + netxen_release_firmware(adapter); + return err; +} + +static int +netxen_nic_request_irq(struct netxen_adapter *adapter) +{ + irq_handler_t handler; + struct nx_host_sds_ring *sds_ring; + int err, ring; + + unsigned long flags = 0; + struct net_device *netdev = adapter->netdev; + struct netxen_recv_context *recv_ctx = &adapter->recv_ctx; + + if (adapter->flags & NETXEN_NIC_MSIX_ENABLED) + handler = netxen_msix_intr; + else if (adapter->flags & NETXEN_NIC_MSI_ENABLED) + handler = netxen_msi_intr; + else { + flags |= IRQF_SHARED; + handler = netxen_intr; + } + adapter->irq = netdev->irq; + + for (ring = 0; ring < adapter->max_sds_rings; ring++) { + sds_ring = &recv_ctx->sds_rings[ring]; + sprintf(sds_ring->name, "%s[%d]", netdev->name, ring); + err = request_irq(sds_ring->irq, handler, + flags, sds_ring->name, sds_ring); + if (err) + return err; + } + + return 0; +} + +static void +netxen_nic_free_irq(struct netxen_adapter *adapter) +{ + int ring; + struct nx_host_sds_ring *sds_ring; + + struct netxen_recv_context *recv_ctx = &adapter->recv_ctx; + + for (ring = 0; ring < adapter->max_sds_rings; ring++) { + sds_ring = &recv_ctx->sds_rings[ring]; + free_irq(sds_ring->irq, sds_ring); + } +} + +static void +netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter) +{ + adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT; + adapter->coal.normal.data.rx_time_us = + NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US; + adapter->coal.normal.data.rx_packets = + NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS; + adapter->coal.normal.data.tx_time_us = + NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US; + adapter->coal.normal.data.tx_packets = + NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS; +} + +/* with rtnl_lock */ +static int +__netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev) +{ + int err; + + if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) + return -EIO; + + err = adapter->init_port(adapter, adapter->physical_port); + if (err) { + printk(KERN_ERR "%s: Failed to initialize port %d\n", + netxen_nic_driver_name, adapter->portnum); + return err; + } + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) + adapter->macaddr_set(adapter, adapter->mac_addr); + + adapter->set_multi(netdev); + adapter->set_mtu(adapter, netdev->mtu); + + adapter->ahw.linkup = 0; + + if (adapter->max_sds_rings > 1) + netxen_config_rss(adapter, 1); + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) + netxen_config_intr_coalesce(adapter); + + if (netdev->features & NETIF_F_LRO) + netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED); + + netxen_napi_enable(adapter); + + if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION) + netxen_linkevent_request(adapter, 1); + else + netxen_nic_set_link_parameters(adapter); + + set_bit(__NX_DEV_UP, &adapter->state); + return 0; +} + +/* Usage: During resume and firmware recovery module.*/ + +static inline int +netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev) +{ + int err = 0; + + rtnl_lock(); + if (netif_running(netdev)) + err = __netxen_nic_up(adapter, netdev); + rtnl_unlock(); + + return err; +} + +/* with rtnl_lock */ +static void +__netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev) +{ + if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) + return; + + if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state)) + return; + + smp_mb(); + netif_carrier_off(netdev); + netif_tx_disable(netdev); + + if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION) + netxen_linkevent_request(adapter, 0); + + if (adapter->stop_port) + adapter->stop_port(adapter); + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) + netxen_p3_free_mac_list(adapter); + + adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE); + + netxen_napi_disable(adapter); + + netxen_release_tx_buffers(adapter); +} + +/* Usage: During suspend and firmware recovery module */ + +static inline void +netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev) +{ + rtnl_lock(); + if (netif_running(netdev)) + __netxen_nic_down(adapter, netdev); + rtnl_unlock(); + +} + +static int +netxen_nic_attach(struct netxen_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + int err, ring; + struct nx_host_rds_ring *rds_ring; + struct nx_host_tx_ring *tx_ring; + u32 capab2; + + if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) + return 0; + + err = netxen_init_firmware(adapter); + if (err) + return err; + + adapter->flags &= ~NETXEN_FW_MSS_CAP; + if (adapter->capabilities & NX_FW_CAPABILITY_MORE_CAPS) { + capab2 = NXRD32(adapter, CRB_FW_CAPABILITIES_2); + if (capab2 & NX_FW_CAPABILITY_2_LRO_MAX_TCP_SEG) + adapter->flags |= NETXEN_FW_MSS_CAP; + } + + err = netxen_napi_add(adapter, netdev); + if (err) + return err; + + err = netxen_alloc_sw_resources(adapter); + if (err) { + printk(KERN_ERR "%s: Error in setting sw resources\n", + netdev->name); + return err; + } + + err = netxen_alloc_hw_resources(adapter); + if (err) { + printk(KERN_ERR "%s: Error in setting hw resources\n", + netdev->name); + goto err_out_free_sw; + } + + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { + tx_ring = adapter->tx_ring; + tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter, + crb_cmd_producer[adapter->portnum]); + tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter, + crb_cmd_consumer[adapter->portnum]); + + tx_ring->producer = 0; + tx_ring->sw_consumer = 0; + + netxen_nic_update_cmd_producer(adapter, tx_ring); + netxen_nic_update_cmd_consumer(adapter, tx_ring); + } + + for (ring = 0; ring < adapter->max_rds_rings; ring++) { + rds_ring = &adapter->recv_ctx.rds_rings[ring]; + netxen_post_rx_buffers(adapter, ring, rds_ring); + } + + err = netxen_nic_request_irq(adapter); + if (err) { + dev_err(&pdev->dev, "%s: failed to setup interrupt\n", + netdev->name); + goto err_out_free_rxbuf; + } + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) + netxen_nic_init_coalesce_defaults(adapter); + + netxen_create_sysfs_entries(adapter); + + adapter->is_up = NETXEN_ADAPTER_UP_MAGIC; + return 0; + +err_out_free_rxbuf: + netxen_release_rx_buffers(adapter); + netxen_free_hw_resources(adapter); +err_out_free_sw: + netxen_free_sw_resources(adapter); + return err; +} + +static void +netxen_nic_detach(struct netxen_adapter *adapter) +{ + if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) + return; + + netxen_remove_sysfs_entries(adapter); + + netxen_free_hw_resources(adapter); + netxen_release_rx_buffers(adapter); + netxen_nic_free_irq(adapter); + netxen_napi_del(adapter); + netxen_free_sw_resources(adapter); + + adapter->is_up = 0; +} + +int +netxen_nic_reset_context(struct netxen_adapter *adapter) +{ + int err = 0; + struct net_device *netdev = adapter->netdev; + + if (test_and_set_bit(__NX_RESETTING, &adapter->state)) + return -EBUSY; + + if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) { + + netif_device_detach(netdev); + + if (netif_running(netdev)) + __netxen_nic_down(adapter, netdev); + + netxen_nic_detach(adapter); + + if (netif_running(netdev)) { + err = netxen_nic_attach(adapter); + if (!err) + err = __netxen_nic_up(adapter, netdev); + + if (err) + goto done; + } + + netif_device_attach(netdev); + } + +done: + clear_bit(__NX_RESETTING, &adapter->state); + return err; +} + +static int +netxen_setup_netdev(struct netxen_adapter *adapter, + struct net_device *netdev) +{ + int err = 0; + struct pci_dev *pdev = adapter->pdev; + + adapter->mc_enabled = 0; + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) + adapter->max_mc_count = 38; + else + adapter->max_mc_count = 16; + + netdev->netdev_ops = &netxen_netdev_ops; + netdev->watchdog_timeo = 5*HZ; + + netxen_nic_change_mtu(netdev, netdev->mtu); + + netdev->ethtool_ops = &netxen_nic_ethtool_ops; + + netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO | + NETIF_F_RXCSUM; + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) + netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6; + + netdev->vlan_features |= netdev->hw_features; + + if (adapter->pci_using_dac) { + netdev->features |= NETIF_F_HIGHDMA; + netdev->vlan_features |= NETIF_F_HIGHDMA; + } + + if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX) + netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX; + + if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO) + netdev->hw_features |= NETIF_F_LRO; + + netdev->features |= netdev->hw_features; + + netdev->irq = adapter->msix_entries[0].vector; + + INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task); + + if (netxen_read_mac_addr(adapter)) + dev_warn(&pdev->dev, "failed to read mac addr\n"); + + netif_carrier_off(netdev); + + err = register_netdev(netdev); + if (err) { + dev_err(&pdev->dev, "failed to register net device\n"); + return err; + } + + return 0; +} + +#define NETXEN_ULA_ADAPTER_KEY (0xdaddad01) +#define NETXEN_NON_ULA_ADAPTER_KEY (0xdaddad00) + +static void netxen_read_ula_info(struct netxen_adapter *adapter) +{ + u32 temp; + + /* Print ULA info only once for an adapter */ + if (adapter->portnum != 0) + return; + + temp = NXRD32(adapter, NETXEN_ULA_KEY); + switch (temp) { + case NETXEN_ULA_ADAPTER_KEY: + dev_info(&adapter->pdev->dev, "ULA adapter"); + break; + case NETXEN_NON_ULA_ADAPTER_KEY: + dev_info(&adapter->pdev->dev, "non ULA adapter"); + break; + default: + break; + } + + return; +} + +#ifdef CONFIG_PCIEAER +static void netxen_mask_aer_correctable(struct netxen_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + struct pci_dev *root = pdev->bus->self; + u32 aer_pos; + + /* root bus? */ + if (!root) + return; + + if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM && + adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP) + return; + + if (pci_pcie_type(root) != PCI_EXP_TYPE_ROOT_PORT) + return; + + aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR); + if (!aer_pos) + return; + + pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff); +} +#endif + +static int +netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct net_device *netdev = NULL; + struct netxen_adapter *adapter = NULL; + int i = 0, err; + int pci_func_id = PCI_FUNC(pdev->devfn); + uint8_t revision_id; + u32 val; + + if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) { + pr_warn("%s: chip revisions between 0x%x-0x%x will not be enabled\n", + module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1); + return -ENODEV; + } + + if ((err = pci_enable_device(pdev))) + return err; + + if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { + err = -ENODEV; + goto err_out_disable_pdev; + } + + if ((err = pci_request_regions(pdev, netxen_nic_driver_name))) + goto err_out_disable_pdev; + + if (NX_IS_REVISION_P3(pdev->revision)) + pci_enable_pcie_error_reporting(pdev); + + pci_set_master(pdev); + + netdev = alloc_etherdev(sizeof(struct netxen_adapter)); + if(!netdev) { + err = -ENOMEM; + goto err_out_free_res; + } + + SET_NETDEV_DEV(netdev, &pdev->dev); + + adapter = netdev_priv(netdev); + adapter->netdev = netdev; + adapter->pdev = pdev; + adapter->ahw.pci_func = pci_func_id; + + revision_id = pdev->revision; + adapter->ahw.revision_id = revision_id; + + rwlock_init(&adapter->ahw.crb_lock); + spin_lock_init(&adapter->ahw.mem_lock); + + spin_lock_init(&adapter->tx_clean_lock); + INIT_LIST_HEAD(&adapter->mac_list); + INIT_LIST_HEAD(&adapter->ip_list); + + err = netxen_setup_pci_map(adapter); + if (err) + goto err_out_free_netdev; + + /* This will be reset for mezz cards */ + adapter->portnum = pci_func_id; + + err = netxen_nic_get_board_info(adapter); + if (err) { + dev_err(&pdev->dev, "Error getting board config info.\n"); + goto err_out_iounmap; + } + +#ifdef CONFIG_PCIEAER + netxen_mask_aer_correctable(adapter); +#endif + + /* Mezz cards have PCI function 0,2,3 enabled */ + switch (adapter->ahw.board_type) { + case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ: + case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ: + if (pci_func_id >= 2) + adapter->portnum = pci_func_id - 2; + break; + default: + break; + } + + err = netxen_check_flash_fw_compatibility(adapter); + if (err) + goto err_out_iounmap; + + if (adapter->portnum == 0) { + val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT); + if (val != 0xffffffff && val != 0) { + NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0); + adapter->need_fw_reset = 1; + } + } + + err = netxen_start_firmware(adapter); + if (err) + goto err_out_decr_ref; + + /* + * See if the firmware gave us a virtual-physical port mapping. + */ + adapter->physical_port = adapter->portnum; + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { + i = NXRD32(adapter, CRB_V2P(adapter->portnum)); + if (i != 0x55555555) + adapter->physical_port = i; + } + + /* MTU range: 0 - 8000 (P2) or 9600 (P3) */ + netdev->min_mtu = 0; + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) + netdev->max_mtu = P3_MAX_MTU; + else + netdev->max_mtu = P2_MAX_MTU; + + netxen_nic_clear_stats(adapter); + + err = netxen_setup_intr(adapter); + + if (err) { + dev_err(&adapter->pdev->dev, + "Failed to setup interrupts, error = %d\n", err); + goto err_out_disable_msi; + } + + netxen_read_ula_info(adapter); + + err = netxen_setup_netdev(adapter, netdev); + if (err) + goto err_out_disable_msi; + + pci_set_drvdata(pdev, adapter); + + netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY); + + switch (adapter->ahw.port_type) { + case NETXEN_NIC_GBE: + dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n", + adapter->netdev->name); + break; + case NETXEN_NIC_XGBE: + dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n", + adapter->netdev->name); + break; + } + + netxen_create_diag_entries(adapter); + + return 0; + +err_out_disable_msi: + netxen_teardown_intr(adapter); + + netxen_free_dummy_dma(adapter); + +err_out_decr_ref: + nx_decr_dev_ref_cnt(adapter); + +err_out_iounmap: + netxen_cleanup_pci_map(adapter); + +err_out_free_netdev: + free_netdev(netdev); + +err_out_free_res: + if (NX_IS_REVISION_P3(pdev->revision)) + pci_disable_pcie_error_reporting(pdev); + pci_release_regions(pdev); + +err_out_disable_pdev: + pci_disable_device(pdev); + return err; +} + +static +void netxen_cleanup_minidump(struct netxen_adapter *adapter) +{ + kfree(adapter->mdump.md_template); + adapter->mdump.md_template = NULL; + + if (adapter->mdump.md_capture_buff) { + vfree(adapter->mdump.md_capture_buff); + adapter->mdump.md_capture_buff = NULL; + } +} + +static void netxen_nic_remove(struct pci_dev *pdev) +{ + struct netxen_adapter *adapter; + struct net_device *netdev; + + adapter = pci_get_drvdata(pdev); + if (adapter == NULL) + return; + + netdev = adapter->netdev; + + netxen_cancel_fw_work(adapter); + + unregister_netdev(netdev); + + cancel_work_sync(&adapter->tx_timeout_task); + + netxen_free_ip_list(adapter, false); + netxen_nic_detach(adapter); + + nx_decr_dev_ref_cnt(adapter); + + if (adapter->portnum == 0) + netxen_free_dummy_dma(adapter); + + clear_bit(__NX_RESETTING, &adapter->state); + + netxen_teardown_intr(adapter); + netxen_set_interrupt_mode(adapter, 0); + netxen_remove_diag_entries(adapter); + + netxen_cleanup_pci_map(adapter); + + netxen_release_firmware(adapter); + + if (NX_IS_REVISION_P3(pdev->revision)) { + netxen_cleanup_minidump(adapter); + pci_disable_pcie_error_reporting(pdev); + } + + pci_release_regions(pdev); + pci_disable_device(pdev); + + free_netdev(netdev); +} + +static void netxen_nic_detach_func(struct netxen_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + + netif_device_detach(netdev); + + netxen_cancel_fw_work(adapter); + + if (netif_running(netdev)) + netxen_nic_down(adapter, netdev); + + cancel_work_sync(&adapter->tx_timeout_task); + + netxen_nic_detach(adapter); + + if (adapter->portnum == 0) + netxen_free_dummy_dma(adapter); + + nx_decr_dev_ref_cnt(adapter); + + clear_bit(__NX_RESETTING, &adapter->state); +} + +static int netxen_nic_attach_late_func(struct pci_dev *pdev) +{ + struct netxen_adapter *adapter = pci_get_drvdata(pdev); + struct net_device *netdev = adapter->netdev; + int err; + + pci_set_master(pdev); + + adapter->ahw.crb_win = -1; + adapter->ahw.ocm_win = -1; + + err = netxen_start_firmware(adapter); + if (err) { + dev_err(&pdev->dev, "failed to start firmware\n"); + return err; + } + + if (netif_running(netdev)) { + err = netxen_nic_attach(adapter); + if (err) + goto err_out; + + err = netxen_nic_up(adapter, netdev); + if (err) + goto err_out_detach; + + netxen_restore_indev_addr(netdev, NETDEV_UP); + } + + netif_device_attach(netdev); + netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY); + return 0; + +err_out_detach: + netxen_nic_detach(adapter); +err_out: + nx_decr_dev_ref_cnt(adapter); + return err; +} + +static int netxen_nic_attach_func(struct pci_dev *pdev) +{ + int err; + + err = pci_enable_device(pdev); + if (err) + return err; + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + + return netxen_nic_attach_late_func(pdev); +} + +static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev, + pci_channel_state_t state) +{ + struct netxen_adapter *adapter = pci_get_drvdata(pdev); + + if (state == pci_channel_io_perm_failure) + return PCI_ERS_RESULT_DISCONNECT; + + if (nx_dev_request_aer(adapter)) + return PCI_ERS_RESULT_RECOVERED; + + netxen_nic_detach_func(adapter); + + pci_disable_device(pdev); + + return PCI_ERS_RESULT_NEED_RESET; +} + +static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev) +{ + int err = 0; + + err = netxen_nic_attach_func(pdev); + + return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED; +} + +static void netxen_nic_shutdown(struct pci_dev *pdev) +{ + struct netxen_adapter *adapter = pci_get_drvdata(pdev); + + netxen_nic_detach_func(adapter); + + if (pci_save_state(pdev)) + return; + + if (netxen_nic_wol_supported(adapter)) { + pci_enable_wake(pdev, PCI_D3cold, 1); + pci_enable_wake(pdev, PCI_D3hot, 1); + } + + pci_disable_device(pdev); +} + +static int __maybe_unused +netxen_nic_suspend(struct device *dev_d) +{ + struct netxen_adapter *adapter = dev_get_drvdata(dev_d); + + netxen_nic_detach_func(adapter); + + if (netxen_nic_wol_supported(adapter)) + device_wakeup_enable(dev_d); + + return 0; +} + +static int __maybe_unused +netxen_nic_resume(struct device *dev_d) +{ + return netxen_nic_attach_late_func(to_pci_dev(dev_d)); +} + +static int netxen_nic_open(struct net_device *netdev) +{ + struct netxen_adapter *adapter = netdev_priv(netdev); + int err = 0; + + if (adapter->driver_mismatch) + return -EIO; + + err = netxen_nic_attach(adapter); + if (err) + return err; + + err = __netxen_nic_up(adapter, netdev); + if (err) + goto err_out; + + netif_start_queue(netdev); + + return 0; + +err_out: + netxen_nic_detach(adapter); + return err; +} + +/* + * netxen_nic_close - Disables a network interface entry point + */ +static int netxen_nic_close(struct net_device *netdev) +{ + struct netxen_adapter *adapter = netdev_priv(netdev); + + __netxen_nic_down(adapter, netdev); + return 0; +} + +static void +netxen_tso_check(struct net_device *netdev, + struct nx_host_tx_ring *tx_ring, + struct cmd_desc_type0 *first_desc, + struct sk_buff *skb) +{ + u8 opcode = TX_ETHER_PKT; + __be16 protocol = skb->protocol; + u16 flags = 0, vid = 0; + u32 producer; + int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0; + struct cmd_desc_type0 *hwdesc; + struct vlan_ethhdr *vh; + + if (protocol == cpu_to_be16(ETH_P_8021Q)) { + + vh = skb_vlan_eth_hdr(skb); + protocol = vh->h_vlan_encapsulated_proto; + flags = FLAGS_VLAN_TAGGED; + + } else if (skb_vlan_tag_present(skb)) { + flags = FLAGS_VLAN_OOB; + vid = skb_vlan_tag_get(skb); + netxen_set_tx_vlan_tci(first_desc, vid); + vlan_oob = 1; + } + + if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) && + skb_shinfo(skb)->gso_size > 0) { + + hdr_len = skb_tcp_all_headers(skb); + + first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); + first_desc->total_hdr_length = hdr_len; + if (vlan_oob) { + first_desc->total_hdr_length += VLAN_HLEN; + first_desc->tcp_hdr_offset = VLAN_HLEN; + first_desc->ip_hdr_offset = VLAN_HLEN; + /* Only in case of TSO on vlan device */ + flags |= FLAGS_VLAN_TAGGED; + } + + opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ? + TX_TCP_LSO6 : TX_TCP_LSO; + tso = 1; + + } else if (skb->ip_summed == CHECKSUM_PARTIAL) { + u8 l4proto; + + if (protocol == cpu_to_be16(ETH_P_IP)) { + l4proto = ip_hdr(skb)->protocol; + + if (l4proto == IPPROTO_TCP) + opcode = TX_TCP_PKT; + else if(l4proto == IPPROTO_UDP) + opcode = TX_UDP_PKT; + } else if (protocol == cpu_to_be16(ETH_P_IPV6)) { + l4proto = ipv6_hdr(skb)->nexthdr; + + if (l4proto == IPPROTO_TCP) + opcode = TX_TCPV6_PKT; + else if(l4proto == IPPROTO_UDP) + opcode = TX_UDPV6_PKT; + } + } + + first_desc->tcp_hdr_offset += skb_transport_offset(skb); + first_desc->ip_hdr_offset += skb_network_offset(skb); + netxen_set_tx_flags_opcode(first_desc, flags, opcode); + + if (!tso) + return; + + /* For LSO, we need to copy the MAC/IP/TCP headers into + * the descriptor ring + */ + producer = tx_ring->producer; + copied = 0; + offset = 2; + + if (vlan_oob) { + /* Create a TSO vlan header template for firmware */ + + hwdesc = &tx_ring->desc_head[producer]; + tx_ring->cmd_buf_arr[producer].skb = NULL; + + copy_len = min((int)sizeof(struct cmd_desc_type0) - offset, + hdr_len + VLAN_HLEN); + + vh = (struct vlan_ethhdr *)((char *)hwdesc + 2); + skb_copy_from_linear_data(skb, vh, 12); + vh->h_vlan_proto = htons(ETH_P_8021Q); + vh->h_vlan_TCI = htons(vid); + skb_copy_from_linear_data_offset(skb, 12, + (char *)vh + 16, copy_len - 16); + + copied = copy_len - VLAN_HLEN; + offset = 0; + + producer = get_next_index(producer, tx_ring->num_desc); + } + + while (copied < hdr_len) { + + copy_len = min((int)sizeof(struct cmd_desc_type0) - offset, + (hdr_len - copied)); + + hwdesc = &tx_ring->desc_head[producer]; + tx_ring->cmd_buf_arr[producer].skb = NULL; + + skb_copy_from_linear_data_offset(skb, copied, + (char *)hwdesc + offset, copy_len); + + copied += copy_len; + offset = 0; + + producer = get_next_index(producer, tx_ring->num_desc); + } + + tx_ring->producer = producer; + barrier(); +} + +static int +netxen_map_tx_skb(struct pci_dev *pdev, + struct sk_buff *skb, struct netxen_cmd_buffer *pbuf) +{ + struct netxen_skb_frag *nf; + skb_frag_t *frag; + int i, nr_frags; + dma_addr_t map; + + nr_frags = skb_shinfo(skb)->nr_frags; + nf = &pbuf->frag_array[0]; + + map = dma_map_single(&pdev->dev, skb->data, skb_headlen(skb), + DMA_TO_DEVICE); + if (dma_mapping_error(&pdev->dev, map)) + goto out_err; + + nf->dma = map; + nf->length = skb_headlen(skb); + + for (i = 0; i < nr_frags; i++) { + frag = &skb_shinfo(skb)->frags[i]; + nf = &pbuf->frag_array[i+1]; + + map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag), + DMA_TO_DEVICE); + if (dma_mapping_error(&pdev->dev, map)) + goto unwind; + + nf->dma = map; + nf->length = skb_frag_size(frag); + } + + return 0; + +unwind: + while (--i >= 0) { + nf = &pbuf->frag_array[i+1]; + dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE); + nf->dma = 0ULL; + } + + nf = &pbuf->frag_array[0]; + dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE); + nf->dma = 0ULL; + +out_err: + return -ENOMEM; +} + +static inline void +netxen_clear_cmddesc(u64 *desc) +{ + desc[0] = 0ULL; + desc[2] = 0ULL; +} + +static netdev_tx_t +netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) +{ + struct netxen_adapter *adapter = netdev_priv(netdev); + struct nx_host_tx_ring *tx_ring = adapter->tx_ring; + struct netxen_cmd_buffer *pbuf; + struct netxen_skb_frag *buffrag; + struct cmd_desc_type0 *hwdesc, *first_desc; + struct pci_dev *pdev; + int i, k; + int delta = 0; + skb_frag_t *frag; + + u32 producer; + int frag_count; + u32 num_txd = tx_ring->num_desc; + + frag_count = skb_shinfo(skb)->nr_frags + 1; + + /* 14 frags supported for normal packet and + * 32 frags supported for TSO packet + */ + if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) { + + for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) { + frag = &skb_shinfo(skb)->frags[i]; + delta += skb_frag_size(frag); + } + + if (!__pskb_pull_tail(skb, delta)) + goto drop_packet; + + frag_count = 1 + skb_shinfo(skb)->nr_frags; + } + + if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) { + netif_stop_queue(netdev); + smp_mb(); + if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH) + netif_start_queue(netdev); + else + return NETDEV_TX_BUSY; + } + + producer = tx_ring->producer; + pbuf = &tx_ring->cmd_buf_arr[producer]; + + pdev = adapter->pdev; + + if (netxen_map_tx_skb(pdev, skb, pbuf)) + goto drop_packet; + + pbuf->skb = skb; + pbuf->frag_count = frag_count; + + first_desc = hwdesc = &tx_ring->desc_head[producer]; + netxen_clear_cmddesc((u64 *)hwdesc); + + netxen_set_tx_frags_len(first_desc, frag_count, skb->len); + netxen_set_tx_port(first_desc, adapter->portnum); + + for (i = 0; i < frag_count; i++) { + + k = i % 4; + + if ((k == 0) && (i > 0)) { + /* move to next desc.*/ + producer = get_next_index(producer, num_txd); + hwdesc = &tx_ring->desc_head[producer]; + netxen_clear_cmddesc((u64 *)hwdesc); + tx_ring->cmd_buf_arr[producer].skb = NULL; + } + + buffrag = &pbuf->frag_array[i]; + + hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length); + switch (k) { + case 0: + hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); + break; + case 1: + hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma); + break; + case 2: + hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma); + break; + case 3: + hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma); + break; + } + } + + tx_ring->producer = get_next_index(producer, num_txd); + + netxen_tso_check(netdev, tx_ring, first_desc, skb); + + adapter->stats.txbytes += skb->len; + adapter->stats.xmitcalled++; + + netxen_nic_update_cmd_producer(adapter, tx_ring); + + return NETDEV_TX_OK; + +drop_packet: + adapter->stats.txdropped++; + dev_kfree_skb_any(skb); + return NETDEV_TX_OK; +} + +static int netxen_nic_check_temp(struct netxen_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + uint32_t temp, temp_state, temp_val; + int rv = 0; + + temp = NXRD32(adapter, CRB_TEMP_STATE); + + temp_state = nx_get_temp_state(temp); + temp_val = nx_get_temp_val(temp); + + if (temp_state == NX_TEMP_PANIC) { + printk(KERN_ALERT + "%s: Device temperature %d degrees C exceeds" + " maximum allowed. Hardware has been shut down.\n", + netdev->name, temp_val); + rv = 1; + } else if (temp_state == NX_TEMP_WARN) { + if (adapter->temp == NX_TEMP_NORMAL) { + printk(KERN_ALERT + "%s: Device temperature %d degrees C " + "exceeds operating range." + " Immediate action needed.\n", + netdev->name, temp_val); + } + } else { + if (adapter->temp == NX_TEMP_WARN) { + printk(KERN_INFO + "%s: Device temperature is now %d degrees C" + " in normal range.\n", netdev->name, + temp_val); + } + } + adapter->temp = temp_state; + return rv; +} + +void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup) +{ + struct net_device *netdev = adapter->netdev; + + if (adapter->ahw.linkup && !linkup) { + printk(KERN_INFO "%s: %s NIC Link is down\n", + netxen_nic_driver_name, netdev->name); + adapter->ahw.linkup = 0; + if (netif_running(netdev)) { + netif_carrier_off(netdev); + netif_stop_queue(netdev); + } + adapter->link_changed = !adapter->has_link_events; + } else if (!adapter->ahw.linkup && linkup) { + printk(KERN_INFO "%s: %s NIC Link is up\n", + netxen_nic_driver_name, netdev->name); + adapter->ahw.linkup = 1; + if (netif_running(netdev)) { + netif_carrier_on(netdev); + netif_wake_queue(netdev); + } + adapter->link_changed = !adapter->has_link_events; + } +} + +static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter) +{ + u32 val, port, linkup; + + port = adapter->physical_port; + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { + val = NXRD32(adapter, CRB_XG_STATE_P3); + val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val); + linkup = (val == XG_LINK_UP_P3); + } else { + val = NXRD32(adapter, CRB_XG_STATE); + val = (val >> port*8) & 0xff; + linkup = (val == XG_LINK_UP); + } + + netxen_advert_link_change(adapter, linkup); +} + +static void netxen_tx_timeout(struct net_device *netdev, unsigned int txqueue) +{ + struct netxen_adapter *adapter = netdev_priv(netdev); + + if (test_bit(__NX_RESETTING, &adapter->state)) + return; + + dev_err(&netdev->dev, "transmit timeout, resetting.\n"); + schedule_work(&adapter->tx_timeout_task); +} + +static void netxen_tx_timeout_task(struct work_struct *work) +{ + struct netxen_adapter *adapter = + container_of(work, struct netxen_adapter, tx_timeout_task); + + if (!netif_running(adapter->netdev)) + return; + + if (test_and_set_bit(__NX_RESETTING, &adapter->state)) + return; + + if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS) + goto request_reset; + + rtnl_lock(); + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { + /* try to scrub interrupt */ + netxen_napi_disable(adapter); + + netxen_napi_enable(adapter); + + netif_wake_queue(adapter->netdev); + + clear_bit(__NX_RESETTING, &adapter->state); + } else { + clear_bit(__NX_RESETTING, &adapter->state); + if (netxen_nic_reset_context(adapter)) { + rtnl_unlock(); + goto request_reset; + } + } + netif_trans_update(adapter->netdev); + rtnl_unlock(); + return; + +request_reset: + adapter->need_fw_reset = 1; + clear_bit(__NX_RESETTING, &adapter->state); +} + +static void netxen_nic_get_stats(struct net_device *netdev, + struct rtnl_link_stats64 *stats) +{ + struct netxen_adapter *adapter = netdev_priv(netdev); + + stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts; + stats->tx_packets = adapter->stats.xmitfinished; + stats->rx_bytes = adapter->stats.rxbytes; + stats->tx_bytes = adapter->stats.txbytes; + stats->rx_dropped = adapter->stats.rxdropped; + stats->tx_dropped = adapter->stats.txdropped; +} + +static irqreturn_t netxen_intr(int irq, void *data) +{ + struct nx_host_sds_ring *sds_ring = data; + struct netxen_adapter *adapter = sds_ring->adapter; + u32 status = 0; + + status = readl(adapter->isr_int_vec); + + if (!(status & adapter->int_vec_bit)) + return IRQ_NONE; + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { + /* check interrupt state machine, to be sure */ + status = readl(adapter->crb_int_state_reg); + if (!ISR_LEGACY_INT_TRIGGERED(status)) + return IRQ_NONE; + + } else { + unsigned long our_int = 0; + + our_int = readl(adapter->crb_int_state_reg); + + /* not our interrupt */ + if (!test_and_clear_bit((7 + adapter->portnum), &our_int)) + return IRQ_NONE; + + /* claim interrupt */ + writel((our_int & 0xffffffff), adapter->crb_int_state_reg); + + /* clear interrupt */ + netxen_nic_disable_int(sds_ring); + } + + writel(0xffffffff, adapter->tgt_status_reg); + /* read twice to ensure write is flushed */ + readl(adapter->isr_int_vec); + readl(adapter->isr_int_vec); + + napi_schedule(&sds_ring->napi); + + return IRQ_HANDLED; +} + +static irqreturn_t netxen_msi_intr(int irq, void *data) +{ + struct nx_host_sds_ring *sds_ring = data; + struct netxen_adapter *adapter = sds_ring->adapter; + + /* clear interrupt */ + writel(0xffffffff, adapter->tgt_status_reg); + + napi_schedule(&sds_ring->napi); + return IRQ_HANDLED; +} + +static irqreturn_t netxen_msix_intr(int irq, void *data) +{ + struct nx_host_sds_ring *sds_ring = data; + + napi_schedule(&sds_ring->napi); + return IRQ_HANDLED; +} + +static int netxen_nic_poll(struct napi_struct *napi, int budget) +{ + struct nx_host_sds_ring *sds_ring = + container_of(napi, struct nx_host_sds_ring, napi); + + struct netxen_adapter *adapter = sds_ring->adapter; + + int tx_complete; + int work_done; + + tx_complete = netxen_process_cmd_ring(adapter); + + work_done = netxen_process_rcv_ring(sds_ring, budget); + + if (!tx_complete) + work_done = budget; + + if (work_done < budget) { + napi_complete_done(&sds_ring->napi, work_done); + if (test_bit(__NX_DEV_UP, &adapter->state)) + netxen_nic_enable_int(sds_ring); + } + + return work_done; +} + +static int +nx_incr_dev_ref_cnt(struct netxen_adapter *adapter) +{ + int count; + if (netxen_api_lock(adapter)) + return -EIO; + + count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT); + + NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count); + + netxen_api_unlock(adapter); + return count; +} + +static int +nx_decr_dev_ref_cnt(struct netxen_adapter *adapter) +{ + int count, state; + if (netxen_api_lock(adapter)) + return -EIO; + + count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT); + WARN_ON(count == 0); + + NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count); + state = NXRD32(adapter, NX_CRB_DEV_STATE); + + if (count == 0 && state != NX_DEV_FAILED) + NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD); + + netxen_api_unlock(adapter); + return count; +} + +static int +nx_dev_request_aer(struct netxen_adapter *adapter) +{ + u32 state; + int ret = -EINVAL; + + if (netxen_api_lock(adapter)) + return ret; + + state = NXRD32(adapter, NX_CRB_DEV_STATE); + + if (state == NX_DEV_NEED_AER) + ret = 0; + else if (state == NX_DEV_READY) { + NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER); + ret = 0; + } + + netxen_api_unlock(adapter); + return ret; +} + +int +nx_dev_request_reset(struct netxen_adapter *adapter) +{ + u32 state; + int ret = -EINVAL; + + if (netxen_api_lock(adapter)) + return ret; + + state = NXRD32(adapter, NX_CRB_DEV_STATE); + + if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED) + ret = 0; + else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) { + NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET); + adapter->flags |= NETXEN_FW_RESET_OWNER; + ret = 0; + } + + netxen_api_unlock(adapter); + + return ret; +} + +static int +netxen_can_start_firmware(struct netxen_adapter *adapter) +{ + int count; + int can_start = 0; + + if (netxen_api_lock(adapter)) { + nx_incr_dev_ref_cnt(adapter); + return -1; + } + + count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT); + + if ((count < 0) || (count >= NX_MAX_PCI_FUNC)) + count = 0; + + if (count == 0) { + can_start = 1; + NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING); + } + + NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count); + + netxen_api_unlock(adapter); + + return can_start; +} + +static void +netxen_schedule_work(struct netxen_adapter *adapter, + work_func_t func, int delay) +{ + INIT_DELAYED_WORK(&adapter->fw_work, func); + schedule_delayed_work(&adapter->fw_work, delay); +} + +static void +netxen_cancel_fw_work(struct netxen_adapter *adapter) +{ + while (test_and_set_bit(__NX_RESETTING, &adapter->state)) + msleep(10); + + cancel_delayed_work_sync(&adapter->fw_work); +} + +static void +netxen_attach_work(struct work_struct *work) +{ + struct netxen_adapter *adapter = container_of(work, + struct netxen_adapter, fw_work.work); + struct net_device *netdev = adapter->netdev; + int err = 0; + + if (netif_running(netdev)) { + err = netxen_nic_attach(adapter); + if (err) + goto done; + + err = netxen_nic_up(adapter, netdev); + if (err) { + netxen_nic_detach(adapter); + goto done; + } + + netxen_restore_indev_addr(netdev, NETDEV_UP); + } + + netif_device_attach(netdev); + +done: + adapter->fw_fail_cnt = 0; + clear_bit(__NX_RESETTING, &adapter->state); + netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY); +} + +static void +netxen_fwinit_work(struct work_struct *work) +{ + struct netxen_adapter *adapter = container_of(work, + struct netxen_adapter, fw_work.work); + int dev_state; + int count; + dev_state = NXRD32(adapter, NX_CRB_DEV_STATE); + if (adapter->flags & NETXEN_FW_RESET_OWNER) { + count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT); + WARN_ON(count == 0); + if (count == 1) { + if (adapter->mdump.md_enabled) { + rtnl_lock(); + netxen_dump_fw(adapter); + rtnl_unlock(); + } + adapter->flags &= ~NETXEN_FW_RESET_OWNER; + if (netxen_api_lock(adapter)) { + clear_bit(__NX_RESETTING, &adapter->state); + NXWR32(adapter, NX_CRB_DEV_STATE, + NX_DEV_FAILED); + return; + } + count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT); + NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count); + NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD); + dev_state = NX_DEV_COLD; + netxen_api_unlock(adapter); + } + } + + switch (dev_state) { + case NX_DEV_COLD: + case NX_DEV_READY: + if (!netxen_start_firmware(adapter)) { + netxen_schedule_work(adapter, netxen_attach_work, 0); + return; + } + break; + + case NX_DEV_NEED_RESET: + case NX_DEV_INITALIZING: + netxen_schedule_work(adapter, + netxen_fwinit_work, 2 * FW_POLL_DELAY); + return; + + case NX_DEV_FAILED: + default: + nx_incr_dev_ref_cnt(adapter); + break; + } + + if (netxen_api_lock(adapter)) { + clear_bit(__NX_RESETTING, &adapter->state); + return; + } + NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_FAILED); + netxen_api_unlock(adapter); + dev_err(&adapter->pdev->dev, "%s: Device initialization Failed\n", + adapter->netdev->name); + + clear_bit(__NX_RESETTING, &adapter->state); +} + +static void +netxen_detach_work(struct work_struct *work) +{ + struct netxen_adapter *adapter = container_of(work, + struct netxen_adapter, fw_work.work); + struct net_device *netdev = adapter->netdev; + int ref_cnt = 0, delay; + u32 status; + + netif_device_detach(netdev); + + netxen_nic_down(adapter, netdev); + + rtnl_lock(); + netxen_nic_detach(adapter); + rtnl_unlock(); + + status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1); + + if (status & NX_RCODE_FATAL_ERROR) + goto err_ret; + + if (adapter->temp == NX_TEMP_PANIC) + goto err_ret; + + if (!(adapter->flags & NETXEN_FW_RESET_OWNER)) + ref_cnt = nx_decr_dev_ref_cnt(adapter); + + if (ref_cnt == -EIO) + goto err_ret; + + delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY); + + adapter->fw_wait_cnt = 0; + netxen_schedule_work(adapter, netxen_fwinit_work, delay); + + return; + +err_ret: + clear_bit(__NX_RESETTING, &adapter->state); +} + +static int +netxen_check_health(struct netxen_adapter *adapter) +{ + u32 state, heartbit; + u32 peg_status; + struct net_device *netdev = adapter->netdev; + + state = NXRD32(adapter, NX_CRB_DEV_STATE); + if (state == NX_DEV_NEED_AER) + return 0; + + if (netxen_nic_check_temp(adapter)) + goto detach; + + if (adapter->need_fw_reset) { + if (nx_dev_request_reset(adapter)) + return 0; + goto detach; + } + + /* NX_DEV_NEED_RESET, this state can be marked in two cases + * 1. Tx timeout 2. Fw hang + * Send request to destroy context in case of tx timeout only + * and doesn't required in case of Fw hang + */ + if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED) { + adapter->need_fw_reset = 1; + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) + goto detach; + } + + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) + return 0; + + heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER); + if (heartbit != adapter->heartbit) { + adapter->heartbit = heartbit; + adapter->fw_fail_cnt = 0; + if (adapter->need_fw_reset) + goto detach; + return 0; + } + + if (++adapter->fw_fail_cnt < FW_FAIL_THRESH) + return 0; + + if (nx_dev_request_reset(adapter)) + return 0; + + clear_bit(__NX_FW_ATTACHED, &adapter->state); + + dev_err(&netdev->dev, "firmware hang detected\n"); + peg_status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1); + dev_err(&adapter->pdev->dev, "Dumping hw/fw registers\n" + "PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2: 0x%x,\n" + "PEG_NET_0_PC: 0x%x, PEG_NET_1_PC: 0x%x,\n" + "PEG_NET_2_PC: 0x%x, PEG_NET_3_PC: 0x%x,\n" + "PEG_NET_4_PC: 0x%x\n", + peg_status, + NXRD32(adapter, NETXEN_PEG_HALT_STATUS2), + NXRD32(adapter, NETXEN_CRB_PEG_NET_0 + 0x3c), + NXRD32(adapter, NETXEN_CRB_PEG_NET_1 + 0x3c), + NXRD32(adapter, NETXEN_CRB_PEG_NET_2 + 0x3c), + NXRD32(adapter, NETXEN_CRB_PEG_NET_3 + 0x3c), + NXRD32(adapter, NETXEN_CRB_PEG_NET_4 + 0x3c)); + if (NX_FWERROR_PEGSTAT1(peg_status) == 0x67) + dev_err(&adapter->pdev->dev, + "Firmware aborted with error code 0x00006700. " + "Device is being reset.\n"); +detach: + if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) && + !test_and_set_bit(__NX_RESETTING, &adapter->state)) + netxen_schedule_work(adapter, netxen_detach_work, 0); + return 1; +} + +static void +netxen_fw_poll_work(struct work_struct *work) +{ + struct netxen_adapter *adapter = container_of(work, + struct netxen_adapter, fw_work.work); + + if (test_bit(__NX_RESETTING, &adapter->state)) + goto reschedule; + + if (test_bit(__NX_DEV_UP, &adapter->state) && + !(adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)) { + if (!adapter->has_link_events) { + + netxen_nic_handle_phy_intr(adapter); + + if (adapter->link_changed) + netxen_nic_set_link_parameters(adapter); + } + } + + if (netxen_check_health(adapter)) + return; + +reschedule: + netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY); +} + +static ssize_t +netxen_store_bridged_mode(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + struct net_device *net = to_net_dev(dev); + struct netxen_adapter *adapter = netdev_priv(net); + unsigned long new; + int ret = -EINVAL; + + if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG)) + goto err_out; + + if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) + goto err_out; + + if (kstrtoul(buf, 2, &new)) + goto err_out; + + if (!netxen_config_bridged_mode(adapter, !!new)) + ret = len; + +err_out: + return ret; +} + +static ssize_t +netxen_show_bridged_mode(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct net_device *net = to_net_dev(dev); + struct netxen_adapter *adapter; + int bridged_mode = 0; + + adapter = netdev_priv(net); + + if (adapter->capabilities & NX_FW_CAPABILITY_BDG) + bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED); + + return sprintf(buf, "%d\n", bridged_mode); +} + +static const struct device_attribute dev_attr_bridged_mode = { + .attr = { .name = "bridged_mode", .mode = 0644 }, + .show = netxen_show_bridged_mode, + .store = netxen_store_bridged_mode, +}; + +static ssize_t +netxen_store_diag_mode(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + struct netxen_adapter *adapter = dev_get_drvdata(dev); + unsigned long new; + + if (kstrtoul(buf, 2, &new)) + return -EINVAL; + + if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED)) + adapter->flags ^= NETXEN_NIC_DIAG_ENABLED; + + return len; +} + +static ssize_t +netxen_show_diag_mode(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct netxen_adapter *adapter = dev_get_drvdata(dev); + + return sprintf(buf, "%d\n", + !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED)); +} + +static const struct device_attribute dev_attr_diag_mode = { + .attr = { .name = "diag_mode", .mode = 0644 }, + .show = netxen_show_diag_mode, + .store = netxen_store_diag_mode, +}; + +static int +netxen_sysfs_validate_crb(struct netxen_adapter *adapter, + loff_t offset, size_t size) +{ + size_t crb_size = 4; + + if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED)) + return -EIO; + + if (offset < NETXEN_PCI_CRBSPACE) { + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) + return -EINVAL; + + if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM, + NETXEN_PCI_CAMQM_2M_END)) + crb_size = 8; + else + return -EINVAL; + } + + if ((size != crb_size) || (offset & (crb_size-1))) + return -EINVAL; + + return 0; +} + +static ssize_t +netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t offset, size_t size) +{ + struct device *dev = kobj_to_dev(kobj); + struct netxen_adapter *adapter = dev_get_drvdata(dev); + u32 data; + u64 qmdata; + int ret; + + ret = netxen_sysfs_validate_crb(adapter, offset, size); + if (ret != 0) + return ret; + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && + ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM, + NETXEN_PCI_CAMQM_2M_END)) { + netxen_pci_camqm_read_2M(adapter, offset, &qmdata); + memcpy(buf, &qmdata, size); + } else { + data = NXRD32(adapter, offset); + memcpy(buf, &data, size); + } + + return size; +} + +static ssize_t +netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t offset, size_t size) +{ + struct device *dev = kobj_to_dev(kobj); + struct netxen_adapter *adapter = dev_get_drvdata(dev); + u32 data; + u64 qmdata; + int ret; + + ret = netxen_sysfs_validate_crb(adapter, offset, size); + if (ret != 0) + return ret; + + if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && + ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM, + NETXEN_PCI_CAMQM_2M_END)) { + memcpy(&qmdata, buf, size); + netxen_pci_camqm_write_2M(adapter, offset, qmdata); + } else { + memcpy(&data, buf, size); + NXWR32(adapter, offset, data); + } + + return size; +} + +static int +netxen_sysfs_validate_mem(struct netxen_adapter *adapter, + loff_t offset, size_t size) +{ + if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED)) + return -EIO; + + if ((size != 8) || (offset & 0x7)) + return -EIO; + + return 0; +} + +static ssize_t +netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t offset, size_t size) +{ + struct device *dev = kobj_to_dev(kobj); + struct netxen_adapter *adapter = dev_get_drvdata(dev); + u64 data; + int ret; + + ret = netxen_sysfs_validate_mem(adapter, offset, size); + if (ret != 0) + return ret; + + if (adapter->pci_mem_read(adapter, offset, &data)) + return -EIO; + + memcpy(buf, &data, size); + + return size; +} + +static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj, + struct bin_attribute *attr, char *buf, + loff_t offset, size_t size) +{ + struct device *dev = kobj_to_dev(kobj); + struct netxen_adapter *adapter = dev_get_drvdata(dev); + u64 data; + int ret; + + ret = netxen_sysfs_validate_mem(adapter, offset, size); + if (ret != 0) + return ret; + + memcpy(&data, buf, size); + + if (adapter->pci_mem_write(adapter, offset, data)) + return -EIO; + + return size; +} + + +static const struct bin_attribute bin_attr_crb = { + .attr = { .name = "crb", .mode = 0644 }, + .size = 0, + .read = netxen_sysfs_read_crb, + .write = netxen_sysfs_write_crb, +}; + +static const struct bin_attribute bin_attr_mem = { + .attr = { .name = "mem", .mode = 0644 }, + .size = 0, + .read = netxen_sysfs_read_mem, + .write = netxen_sysfs_write_mem, +}; + +static ssize_t +netxen_sysfs_read_dimm(struct file *filp, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t offset, size_t size) +{ + struct device *dev = kobj_to_dev(kobj); + struct netxen_adapter *adapter = dev_get_drvdata(dev); + struct net_device *netdev = adapter->netdev; + struct netxen_dimm_cfg dimm; + u8 dw, rows, cols, banks, ranks; + u32 val; + + if (size < attr->size) { + netdev_err(netdev, "Invalid size\n"); + return -EINVAL; + } + + memset(&dimm, 0, sizeof(struct netxen_dimm_cfg)); + val = NXRD32(adapter, NETXEN_DIMM_CAPABILITY); + + /* Checks if DIMM info is valid. */ + if (val & NETXEN_DIMM_VALID_FLAG) { + netdev_err(netdev, "Invalid DIMM flag\n"); + dimm.presence = 0xff; + goto out; + } + + rows = NETXEN_DIMM_NUMROWS(val); + cols = NETXEN_DIMM_NUMCOLS(val); + ranks = NETXEN_DIMM_NUMRANKS(val); + banks = NETXEN_DIMM_NUMBANKS(val); + dw = NETXEN_DIMM_DATAWIDTH(val); + + dimm.presence = (val & NETXEN_DIMM_PRESENT); + + /* Checks if DIMM info is present. */ + if (!dimm.presence) { + netdev_err(netdev, "DIMM not present\n"); + goto out; + } + + dimm.dimm_type = NETXEN_DIMM_TYPE(val); + + switch (dimm.dimm_type) { + case NETXEN_DIMM_TYPE_RDIMM: + case NETXEN_DIMM_TYPE_UDIMM: + case NETXEN_DIMM_TYPE_SO_DIMM: + case NETXEN_DIMM_TYPE_Micro_DIMM: + case NETXEN_DIMM_TYPE_Mini_RDIMM: + case NETXEN_DIMM_TYPE_Mini_UDIMM: + break; + default: + netdev_err(netdev, "Invalid DIMM type %x\n", dimm.dimm_type); + goto out; + } + + if (val & NETXEN_DIMM_MEMTYPE_DDR2_SDRAM) + dimm.mem_type = NETXEN_DIMM_MEM_DDR2_SDRAM; + else + dimm.mem_type = NETXEN_DIMM_MEMTYPE(val); + + if (val & NETXEN_DIMM_SIZE) { + dimm.size = NETXEN_DIMM_STD_MEM_SIZE; + goto out; + } + + if (!rows) { + netdev_err(netdev, "Invalid no of rows %x\n", rows); + goto out; + } + + if (!cols) { + netdev_err(netdev, "Invalid no of columns %x\n", cols); + goto out; + } + + if (!banks) { + netdev_err(netdev, "Invalid no of banks %x\n", banks); + goto out; + } + + ranks += 1; + + switch (dw) { + case 0x0: + dw = 32; + break; + case 0x1: + dw = 33; + break; + case 0x2: + dw = 36; + break; + case 0x3: + dw = 64; + break; + case 0x4: + dw = 72; + break; + case 0x5: + dw = 80; + break; + case 0x6: + dw = 128; + break; + case 0x7: + dw = 144; + break; + default: + netdev_err(netdev, "Invalid data-width %x\n", dw); + goto out; + } + + dimm.size = ((1 << rows) * (1 << cols) * dw * banks * ranks) / 8; + /* Size returned in MB. */ + dimm.size = (dimm.size) / 0x100000; +out: + memcpy(buf, &dimm, sizeof(struct netxen_dimm_cfg)); + return sizeof(struct netxen_dimm_cfg); + +} + +static const struct bin_attribute bin_attr_dimm = { + .attr = { .name = "dimm", .mode = 0644 }, + .size = sizeof(struct netxen_dimm_cfg), + .read = netxen_sysfs_read_dimm, +}; + + +static void +netxen_create_sysfs_entries(struct netxen_adapter *adapter) +{ + struct device *dev = &adapter->pdev->dev; + + if (adapter->capabilities & NX_FW_CAPABILITY_BDG) { + /* bridged_mode control */ + if (device_create_file(dev, &dev_attr_bridged_mode)) { + dev_warn(dev, + "failed to create bridged_mode sysfs entry\n"); + } + } +} + +static void +netxen_remove_sysfs_entries(struct netxen_adapter *adapter) +{ + struct device *dev = &adapter->pdev->dev; + + if (adapter->capabilities & NX_FW_CAPABILITY_BDG) + device_remove_file(dev, &dev_attr_bridged_mode); +} + +static void +netxen_create_diag_entries(struct netxen_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + struct device *dev; + + dev = &pdev->dev; + if (device_create_file(dev, &dev_attr_diag_mode)) + dev_info(dev, "failed to create diag_mode sysfs entry\n"); + if (device_create_bin_file(dev, &bin_attr_crb)) + dev_info(dev, "failed to create crb sysfs entry\n"); + if (device_create_bin_file(dev, &bin_attr_mem)) + dev_info(dev, "failed to create mem sysfs entry\n"); + if (device_create_bin_file(dev, &bin_attr_dimm)) + dev_info(dev, "failed to create dimm sysfs entry\n"); +} + + +static void +netxen_remove_diag_entries(struct netxen_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + struct device *dev = &pdev->dev; + + device_remove_file(dev, &dev_attr_diag_mode); + device_remove_bin_file(dev, &bin_attr_crb); + device_remove_bin_file(dev, &bin_attr_mem); + device_remove_bin_file(dev, &bin_attr_dimm); +} + +#ifdef CONFIG_INET + +#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops) + +static int +netxen_destip_supported(struct netxen_adapter *adapter) +{ + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) + return 0; + + if (adapter->ahw.cut_through) + return 0; + + return 1; +} + +static void +netxen_free_ip_list(struct netxen_adapter *adapter, bool master) +{ + struct nx_ip_list *cur, *tmp_cur; + + list_for_each_entry_safe(cur, tmp_cur, &adapter->ip_list, list) { + if (master) { + if (cur->master) { + netxen_config_ipaddr(adapter, cur->ip_addr, + NX_IP_DOWN); + list_del(&cur->list); + kfree(cur); + } + } else { + netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN); + list_del(&cur->list); + kfree(cur); + } + } +} + +static bool +netxen_list_config_ip(struct netxen_adapter *adapter, + struct in_ifaddr *ifa, unsigned long event) +{ + struct net_device *dev; + struct nx_ip_list *cur, *tmp_cur; + struct list_head *head; + bool ret = false; + + dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL; + + if (dev == NULL) + goto out; + + switch (event) { + case NX_IP_UP: + list_for_each(head, &adapter->ip_list) { + cur = list_entry(head, struct nx_ip_list, list); + + if (cur->ip_addr == ifa->ifa_address) + goto out; + } + + cur = kzalloc(sizeof(struct nx_ip_list), GFP_ATOMIC); + if (cur == NULL) + goto out; + if (is_vlan_dev(dev)) + dev = vlan_dev_real_dev(dev); + cur->master = !!netif_is_bond_master(dev); + cur->ip_addr = ifa->ifa_address; + list_add_tail(&cur->list, &adapter->ip_list); + netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP); + ret = true; + break; + case NX_IP_DOWN: + list_for_each_entry_safe(cur, tmp_cur, + &adapter->ip_list, list) { + if (cur->ip_addr == ifa->ifa_address) { + list_del(&cur->list); + kfree(cur); + netxen_config_ipaddr(adapter, ifa->ifa_address, + NX_IP_DOWN); + ret = true; + break; + } + } + } +out: + return ret; +} + +static void +netxen_config_indev_addr(struct netxen_adapter *adapter, + struct net_device *dev, unsigned long event) +{ + struct in_device *indev; + struct in_ifaddr *ifa; + + if (!netxen_destip_supported(adapter)) + return; + + indev = in_dev_get(dev); + if (!indev) + return; + + rcu_read_lock(); + in_dev_for_each_ifa_rcu(ifa, indev) { + switch (event) { + case NETDEV_UP: + netxen_list_config_ip(adapter, ifa, NX_IP_UP); + break; + case NETDEV_DOWN: + netxen_list_config_ip(adapter, ifa, NX_IP_DOWN); + break; + default: + break; + } + } + rcu_read_unlock(); + in_dev_put(indev); +} + +static void +netxen_restore_indev_addr(struct net_device *netdev, unsigned long event) + +{ + struct netxen_adapter *adapter = netdev_priv(netdev); + struct nx_ip_list *pos, *tmp_pos; + unsigned long ip_event; + + ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN; + netxen_config_indev_addr(adapter, netdev, event); + + list_for_each_entry_safe(pos, tmp_pos, &adapter->ip_list, list) { + netxen_config_ipaddr(adapter, pos->ip_addr, ip_event); + } +} + +static inline bool +netxen_config_checkdev(struct net_device *dev) +{ + struct netxen_adapter *adapter; + + if (!is_netxen_netdev(dev)) + return false; + adapter = netdev_priv(dev); + if (!adapter) + return false; + if (!netxen_destip_supported(adapter)) + return false; + if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) + return false; + + return true; +} + +/** + * netxen_config_master - configure addresses based on master + * @dev: netxen device + * @event: netdev event + */ +static void netxen_config_master(struct net_device *dev, unsigned long event) +{ + struct net_device *master, *slave; + struct netxen_adapter *adapter = netdev_priv(dev); + + rcu_read_lock(); + master = netdev_master_upper_dev_get_rcu(dev); + /* + * This is the case where the netxen nic is being + * enslaved and is dev_open()ed in bond_enslave() + * Now we should program the bond's (and its vlans') + * addresses in the netxen NIC. + */ + if (master && netif_is_bond_master(master) && + !netif_is_bond_slave(dev)) { + netxen_config_indev_addr(adapter, master, event); + for_each_netdev_rcu(&init_net, slave) + if (is_vlan_dev(slave) && + vlan_dev_real_dev(slave) == master) + netxen_config_indev_addr(adapter, slave, event); + } + rcu_read_unlock(); + /* + * This is the case where the netxen nic is being + * released and is dev_close()ed in bond_release() + * just before IFF_BONDING is stripped. + */ + if (!master && dev->priv_flags & IFF_BONDING) + netxen_free_ip_list(adapter, true); +} + +static int netxen_netdev_event(struct notifier_block *this, + unsigned long event, void *ptr) +{ + struct netxen_adapter *adapter; + struct net_device *dev = netdev_notifier_info_to_dev(ptr); + struct net_device *orig_dev = dev; + struct net_device *slave; + +recheck: + if (dev == NULL) + goto done; + + if (is_vlan_dev(dev)) { + dev = vlan_dev_real_dev(dev); + goto recheck; + } + if (event == NETDEV_UP || event == NETDEV_DOWN) { + /* If this is a bonding device, look for netxen-based slaves*/ + if (netif_is_bond_master(dev)) { + rcu_read_lock(); + for_each_netdev_in_bond_rcu(dev, slave) { + if (!netxen_config_checkdev(slave)) + continue; + adapter = netdev_priv(slave); + netxen_config_indev_addr(adapter, + orig_dev, event); + } + rcu_read_unlock(); + } else { + if (!netxen_config_checkdev(dev)) + goto done; + adapter = netdev_priv(dev); + /* Act only if the actual netxen is the target */ + if (orig_dev == dev) + netxen_config_master(dev, event); + netxen_config_indev_addr(adapter, orig_dev, event); + } + } +done: + return NOTIFY_DONE; +} + +static int +netxen_inetaddr_event(struct notifier_block *this, + unsigned long event, void *ptr) +{ + struct netxen_adapter *adapter; + struct net_device *dev, *slave; + struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; + unsigned long ip_event; + + dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL; + ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN; +recheck: + if (dev == NULL) + goto done; + + if (is_vlan_dev(dev)) { + dev = vlan_dev_real_dev(dev); + goto recheck; + } + if (event == NETDEV_UP || event == NETDEV_DOWN) { + /* If this is a bonding device, look for netxen-based slaves*/ + if (netif_is_bond_master(dev)) { + rcu_read_lock(); + for_each_netdev_in_bond_rcu(dev, slave) { + if (!netxen_config_checkdev(slave)) + continue; + adapter = netdev_priv(slave); + netxen_list_config_ip(adapter, ifa, ip_event); + } + rcu_read_unlock(); + } else { + if (!netxen_config_checkdev(dev)) + goto done; + adapter = netdev_priv(dev); + netxen_list_config_ip(adapter, ifa, ip_event); + } + } +done: + return NOTIFY_DONE; +} + +static struct notifier_block netxen_netdev_cb = { + .notifier_call = netxen_netdev_event, +}; + +static struct notifier_block netxen_inetaddr_cb = { + .notifier_call = netxen_inetaddr_event, +}; +#else +static void +netxen_restore_indev_addr(struct net_device *dev, unsigned long event) +{ } +static void +netxen_free_ip_list(struct netxen_adapter *adapter, bool master) +{ } +#endif + +static const struct pci_error_handlers netxen_err_handler = { + .error_detected = netxen_io_error_detected, + .slot_reset = netxen_io_slot_reset, +}; + +static SIMPLE_DEV_PM_OPS(netxen_nic_pm_ops, + netxen_nic_suspend, + netxen_nic_resume); + +static struct pci_driver netxen_driver = { + .name = netxen_nic_driver_name, + .id_table = netxen_pci_tbl, + .probe = netxen_nic_probe, + .remove = netxen_nic_remove, + .driver.pm = &netxen_nic_pm_ops, + .shutdown = netxen_nic_shutdown, + .err_handler = &netxen_err_handler +}; + +static int __init netxen_init_module(void) +{ + printk(KERN_INFO "%s\n", netxen_nic_driver_string); + +#ifdef CONFIG_INET + register_netdevice_notifier(&netxen_netdev_cb); + register_inetaddr_notifier(&netxen_inetaddr_cb); +#endif + return pci_register_driver(&netxen_driver); +} + +module_init(netxen_init_module); + +static void __exit netxen_exit_module(void) +{ + pci_unregister_driver(&netxen_driver); + +#ifdef CONFIG_INET + unregister_inetaddr_notifier(&netxen_inetaddr_cb); + unregister_netdevice_notifier(&netxen_netdev_cb); +#endif +} + +module_exit(netxen_exit_module); |