qlcnic: Qlogic ethernet driver for CNA devices
o 1G/10G Ethernet Driver for Qlgic QLE8240 and QLE8242 CNA devices.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
new file mode 100644
index 0000000..1698b6a
--- /dev/null
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -0,0 +1,2604 @@
+/*
+ * Copyright (C) 2009 - QLogic Corporation.
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called "COPYING".
+ *
+ */
+
+#include <linux/vmalloc.h>
+#include <linux/interrupt.h>
+
+#include "qlcnic.h"
+
+#include <linux/dma-mapping.h>
+#include <linux/if_vlan.h>
+#include <net/ip.h>
+#include <linux/ipv6.h>
+#include <linux/inetdevice.h>
+#include <linux/sysfs.h>
+
+MODULE_DESCRIPTION("QLogic 10 GbE Converged Ethernet Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(QLCNIC_LINUX_VERSIONID);
+MODULE_FIRMWARE(QLCNIC_UNIFIED_ROMIMAGE_NAME);
+
+char qlcnic_driver_name[] = "qlcnic";
+static const char qlcnic_driver_string[] = "QLogic Converged Ethernet Driver v"
+ QLCNIC_LINUX_VERSIONID;
+
+static int port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
+
+/* Default to restricted 1G auto-neg mode */
+static int wol_port_mode = 5;
+
+static int use_msi = 1;
+module_param(use_msi, int, 0644);
+MODULE_PARM_DESC(use_msi, "MSI interrupt (0=disabled, 1=enabled");
+
+static int use_msi_x = 1;
+module_param(use_msi_x, int, 0644);
+MODULE_PARM_DESC(use_msi_x, "MSI-X interrupt (0=disabled, 1=enabled");
+
+static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
+module_param(auto_fw_reset, int, 0644);
+MODULE_PARM_DESC(auto_fw_reset, "Auto firmware reset (0=disabled, 1=enabled");
+
+static int __devinit qlcnic_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent);
+static void __devexit qlcnic_remove(struct pci_dev *pdev);
+static int qlcnic_open(struct net_device *netdev);
+static int qlcnic_close(struct net_device *netdev);
+static netdev_tx_t qlcnic_xmit_frame(struct sk_buff *,
+ struct net_device *);
+static void qlcnic_tx_timeout(struct net_device *netdev);
+static void qlcnic_tx_timeout_task(struct work_struct *work);
+static void qlcnic_attach_work(struct work_struct *work);
+static void qlcnic_fwinit_work(struct work_struct *work);
+static void qlcnic_fw_poll_work(struct work_struct *work);
+static void qlcnic_schedule_work(struct qlcnic_adapter *adapter,
+ work_func_t func, int delay);
+static void qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter);
+static int qlcnic_poll(struct napi_struct *napi, int budget);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void qlcnic_poll_controller(struct net_device *netdev);
+#endif
+
+static void qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter);
+static void qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter);
+static void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter);
+static void qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter);
+
+static void qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter);
+static int qlcnic_can_start_firmware(struct qlcnic_adapter *adapter);
+
+static irqreturn_t qlcnic_intr(int irq, void *data);
+static irqreturn_t qlcnic_msi_intr(int irq, void *data);
+static irqreturn_t qlcnic_msix_intr(int irq, void *data);
+
+static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev);
+static void qlcnic_config_indev_addr(struct net_device *dev, unsigned long);
+
+/* PCI Device ID Table */
+#define ENTRY(device) \
+ {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, (device)), \
+ .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
+
+#define PCI_DEVICE_ID_QLOGIC_QLE824X 0x8020
+
+static const struct pci_device_id qlcnic_pci_tbl[] __devinitdata = {
+ ENTRY(PCI_DEVICE_ID_QLOGIC_QLE824X),
+ {0,}
+};
+
+MODULE_DEVICE_TABLE(pci, qlcnic_pci_tbl);
+
+
+void
+qlcnic_update_cmd_producer(struct qlcnic_adapter *adapter,
+ struct qlcnic_host_tx_ring *tx_ring)
+{
+ writel(tx_ring->producer, tx_ring->crb_cmd_producer);
+
+ if (qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH) {
+ netif_stop_queue(adapter->netdev);
+ smp_mb();
+ }
+}
+
+static const u32 msi_tgt_status[8] = {
+ ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
+ ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
+ ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
+ ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
+};
+
+static const
+struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG;
+
+static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring)
+{
+ writel(0, sds_ring->crb_intr_mask);
+}
+
+static inline void qlcnic_enable_int(struct qlcnic_host_sds_ring *sds_ring)
+{
+ struct qlcnic_adapter *adapter = sds_ring->adapter;
+
+ writel(0x1, sds_ring->crb_intr_mask);
+
+ if (!QLCNIC_IS_MSI_FAMILY(adapter))
+ writel(0xfbff, adapter->tgt_mask_reg);
+}
+
+static int
+qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count)
+{
+ int size = sizeof(struct qlcnic_host_sds_ring) * count;
+
+ recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
+
+ return (recv_ctx->sds_rings == NULL);
+}
+
+static void
+qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
+{
+ if (recv_ctx->sds_rings != NULL)
+ kfree(recv_ctx->sds_rings);
+
+ recv_ctx->sds_rings = NULL;
+}
+
+static int
+qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
+{
+ int ring;
+ struct qlcnic_host_sds_ring *sds_ring;
+ struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+ if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
+ return -ENOMEM;
+
+ for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ sds_ring = &recv_ctx->sds_rings[ring];
+ netif_napi_add(netdev, &sds_ring->napi,
+ qlcnic_poll, QLCNIC_NETDEV_WEIGHT);
+ }
+
+ return 0;
+}
+
+static void
+qlcnic_napi_del(struct qlcnic_adapter *adapter)
+{
+ int ring;
+ struct qlcnic_host_sds_ring *sds_ring;
+ struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+ for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ sds_ring = &recv_ctx->sds_rings[ring];
+ netif_napi_del(&sds_ring->napi);
+ }
+
+ qlcnic_free_sds_rings(&adapter->recv_ctx);
+}
+
+static void
+qlcnic_napi_enable(struct qlcnic_adapter *adapter)
+{
+ int ring;
+ struct qlcnic_host_sds_ring *sds_ring;
+ struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+ for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ sds_ring = &recv_ctx->sds_rings[ring];
+ napi_enable(&sds_ring->napi);
+ qlcnic_enable_int(sds_ring);
+ }
+}
+
+static void
+qlcnic_napi_disable(struct qlcnic_adapter *adapter)
+{
+ int ring;
+ struct qlcnic_host_sds_ring *sds_ring;
+ struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+ for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ sds_ring = &recv_ctx->sds_rings[ring];
+ qlcnic_disable_int(sds_ring);
+ napi_synchronize(&sds_ring->napi);
+ napi_disable(&sds_ring->napi);
+ }
+}
+
+static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
+{
+ memset(&adapter->stats, 0, sizeof(adapter->stats));
+ return;
+}
+
+static int qlcnic_set_dma_mask(struct qlcnic_adapter *adapter)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ u64 mask, cmask;
+
+ adapter->pci_using_dac = 0;
+
+ mask = DMA_BIT_MASK(39);
+ cmask = mask;
+
+ if (pci_set_dma_mask(pdev, mask) == 0 &&
+ pci_set_consistent_dma_mask(pdev, cmask) == 0) {
+ adapter->pci_using_dac = 1;
+ return 0;
+ }
+
+ return -EIO;
+}
+
+/* Update addressable range if firmware supports it */
+static int
+qlcnic_update_dma_mask(struct qlcnic_adapter *adapter)
+{
+ int change, shift, err;
+ u64 mask, old_mask, old_cmask;
+ struct pci_dev *pdev = adapter->pdev;
+
+ change = 0;
+
+ shift = QLCRD32(adapter, CRB_DMA_SHIFT);
+ if (shift > 32)
+ return 0;
+
+ if (shift > 9)
+ change = 1;
+
+ if (change) {
+ old_mask = pdev->dma_mask;
+ old_cmask = pdev->dev.coherent_dma_mask;
+
+ mask = DMA_BIT_MASK(32+shift);
+
+ err = pci_set_dma_mask(pdev, mask);
+ if (err)
+ goto err_out;
+
+ err = pci_set_consistent_dma_mask(pdev, mask);
+ if (err)
+ goto err_out;
+ dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
+ }
+
+ return 0;
+
+err_out:
+ pci_set_dma_mask(pdev, old_mask);
+ pci_set_consistent_dma_mask(pdev, old_cmask);
+ return err;
+}
+
+static void qlcnic_set_port_mode(struct qlcnic_adapter *adapter)
+{
+ u32 val, data;
+
+ val = adapter->ahw.board_type;
+ if ((val == QLCNIC_BRDTYPE_P3_HMEZ) ||
+ (val == QLCNIC_BRDTYPE_P3_XG_LOM)) {
+ if (port_mode == QLCNIC_PORT_MODE_802_3_AP) {
+ data = QLCNIC_PORT_MODE_802_3_AP;
+ QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
+ } else if (port_mode == QLCNIC_PORT_MODE_XG) {
+ data = QLCNIC_PORT_MODE_XG;
+ QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
+ } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_1G) {
+ data = QLCNIC_PORT_MODE_AUTO_NEG_1G;
+ QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
+ } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_XG) {
+ data = QLCNIC_PORT_MODE_AUTO_NEG_XG;
+ QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
+ } else {
+ data = QLCNIC_PORT_MODE_AUTO_NEG;
+ QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
+ }
+
+ if ((wol_port_mode != QLCNIC_PORT_MODE_802_3_AP) &&
+ (wol_port_mode != QLCNIC_PORT_MODE_XG) &&
+ (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_1G) &&
+ (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_XG)) {
+ wol_port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
+ }
+ QLCWR32(adapter, QLCNIC_WOL_PORT_MODE, wol_port_mode);
+ }
+}
+
+static void qlcnic_set_msix_bit(struct pci_dev *pdev, int enable)
+{
+ u32 control;
+ int pos;
+
+ pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
+ if (pos) {
+ pci_read_config_dword(pdev, pos, &control);
+ if (enable)
+ control |= PCI_MSIX_FLAGS_ENABLE;
+ else
+ control = 0;
+ pci_write_config_dword(pdev, pos, control);
+ }
+}
+
+static void qlcnic_init_msix_entries(struct qlcnic_adapter *adapter, int count)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ adapter->msix_entries[i].entry = i;
+}
+
+static int
+qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
+{
+ int i;
+ unsigned char *p;
+ u64 mac_addr;
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+
+ if (qlcnic_get_mac_addr(adapter, &mac_addr) != 0)
+ return -EIO;
+
+ p = (unsigned char *)&mac_addr;
+ for (i = 0; i < 6; i++)
+ netdev->dev_addr[i] = *(p + 5 - i);
+
+ memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
+ memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
+
+ /* set station address */
+
+ if (!is_valid_ether_addr(netdev->perm_addr))
+ dev_warn(&pdev->dev, "Bad MAC address %pM.\n",
+ netdev->dev_addr);
+
+ return 0;
+}
+
+static int qlcnic_set_mac(struct net_device *netdev, void *p)
+{
+ struct qlcnic_adapter *adapter = netdev_priv(netdev);
+ struct sockaddr *addr = p;
+
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EINVAL;
+
+ if (netif_running(netdev)) {
+ netif_device_detach(netdev);
+ qlcnic_napi_disable(adapter);
+ }
+
+ memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
+ memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+ qlcnic_set_multi(adapter->netdev);
+
+ if (netif_running(netdev)) {
+ netif_device_attach(netdev);
+ qlcnic_napi_enable(adapter);
+ }
+ return 0;
+}
+
+static const struct net_device_ops qlcnic_netdev_ops = {
+ .ndo_open = qlcnic_open,
+ .ndo_stop = qlcnic_close,
+ .ndo_start_xmit = qlcnic_xmit_frame,
+ .ndo_get_stats = qlcnic_get_stats,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_multicast_list = qlcnic_set_multi,
+ .ndo_set_mac_address = qlcnic_set_mac,
+ .ndo_change_mtu = qlcnic_change_mtu,
+ .ndo_tx_timeout = qlcnic_tx_timeout,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = qlcnic_poll_controller,
+#endif
+};
+
+static void
+qlcnic_setup_intr(struct qlcnic_adapter *adapter)
+{
+ const struct qlcnic_legacy_intr_set *legacy_intrp;
+ struct pci_dev *pdev = adapter->pdev;
+ int err, num_msix;
+
+ if (adapter->rss_supported) {
+ num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
+ MSIX_ENTRIES_PER_ADAPTER : 2;
+ } else
+ num_msix = 1;
+
+ adapter->max_sds_rings = 1;
+
+ adapter->flags &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED);
+
+ legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
+
+ adapter->int_vec_bit = legacy_intrp->int_vec_bit;
+ adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
+ legacy_intrp->tgt_status_reg);
+ adapter->tgt_mask_reg = qlcnic_get_ioaddr(adapter,
+ legacy_intrp->tgt_mask_reg);
+ adapter->isr_int_vec = qlcnic_get_ioaddr(adapter, ISR_INT_VECTOR);
+
+ adapter->crb_int_state_reg = qlcnic_get_ioaddr(adapter,
+ ISR_INT_STATE_REG);
+
+ qlcnic_set_msix_bit(pdev, 0);
+
+ if (adapter->msix_supported) {
+
+ qlcnic_init_msix_entries(adapter, num_msix);
+ err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
+ if (err == 0) {
+ adapter->flags |= QLCNIC_MSIX_ENABLED;
+ qlcnic_set_msix_bit(pdev, 1);
+
+ if (adapter->rss_supported)
+ adapter->max_sds_rings = num_msix;
+
+ dev_info(&pdev->dev, "using msi-x interrupts\n");
+ return;
+ }
+
+ if (err > 0)
+ pci_disable_msix(pdev);
+
+ /* fall through for msi */
+ }
+
+ if (use_msi && !pci_enable_msi(pdev)) {
+ adapter->flags |= QLCNIC_MSI_ENABLED;
+ adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
+ msi_tgt_status[adapter->ahw.pci_func]);
+ dev_info(&pdev->dev, "using msi interrupts\n");
+ adapter->msix_entries[0].vector = pdev->irq;
+ return;
+ }
+
+ dev_info(&pdev->dev, "using legacy interrupts\n");
+ adapter->msix_entries[0].vector = pdev->irq;
+}
+
+static void
+qlcnic_teardown_intr(struct qlcnic_adapter *adapter)
+{
+ if (adapter->flags & QLCNIC_MSIX_ENABLED)
+ pci_disable_msix(adapter->pdev);
+ if (adapter->flags & QLCNIC_MSI_ENABLED)
+ pci_disable_msi(adapter->pdev);
+}
+
+static void
+qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter)
+{
+ if (adapter->ahw.pci_base0 != NULL)
+ iounmap(adapter->ahw.pci_base0);
+}
+
+static int
+qlcnic_setup_pci_map(struct qlcnic_adapter *adapter)
+{
+ void __iomem *mem_ptr0 = NULL;
+ resource_size_t mem_base;
+ unsigned long mem_len, pci_len0 = 0;
+
+ struct pci_dev *pdev = adapter->pdev;
+ int pci_func = adapter->ahw.pci_func;
+
+ /*
+ * Set the CRB window to invalid. If any register in window 0 is
+ * accessed it should set the window to 0 and then reset it to 1.
+ */
+ adapter->ahw.crb_win = -1;
+ adapter->ahw.ocm_win = -1;
+
+ /* remap phys address */
+ mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
+ mem_len = pci_resource_len(pdev, 0);
+
+ if (mem_len == QLCNIC_PCI_2MB_SIZE) {
+
+ mem_ptr0 = pci_ioremap_bar(pdev, 0);
+ if (mem_ptr0 == NULL) {
+ dev_err(&pdev->dev, "failed to map PCI bar 0\n");
+ return -EIO;
+ }
+ pci_len0 = mem_len;
+ } else {
+ return -EIO;
+ }
+
+ dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
+
+ adapter->ahw.pci_base0 = mem_ptr0;
+ adapter->ahw.pci_len0 = pci_len0;
+
+ adapter->ahw.ocm_win_crb = qlcnic_get_ioaddr(adapter,
+ QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
+
+ return 0;
+}
+
+static void get_brd_name(struct qlcnic_adapter *adapter, char *name)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ int i, found = 0;
+
+ for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
+ if (qlcnic_boards[i].vendor == pdev->vendor &&
+ qlcnic_boards[i].device == pdev->device &&
+ qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor &&
+ qlcnic_boards[i].sub_device == pdev->subsystem_device) {
+ strcpy(name, qlcnic_boards[i].short_name);
+ found = 1;
+ break;
+ }
+
+ }
+
+ if (!found)
+ name = "Unknown";
+}
+
+static void
+qlcnic_check_options(struct qlcnic_adapter *adapter)
+{
+ u32 fw_major, fw_minor, fw_build;
+ char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];
+ char serial_num[32];
+ int i, offset, val;
+ int *ptr32;
+ struct pci_dev *pdev = adapter->pdev;
+
+ adapter->driver_mismatch = 0;
+
+ ptr32 = (int *)&serial_num;
+ offset = QLCNIC_FW_SERIAL_NUM_OFFSET;
+ for (i = 0; i < 8; i++) {
+ if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) {
+ dev_err(&pdev->dev, "error reading board info\n");
+ adapter->driver_mismatch = 1;
+ return;
+ }
+ ptr32[i] = cpu_to_le32(val);
+ offset += sizeof(u32);
+ }
+
+ fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
+ fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
+ fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
+
+ adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build);
+
+ if (adapter->portnum == 0) {
+ get_brd_name(adapter, brd_name);
+
+ pr_info("%s: %s Board Chip rev 0x%x\n",
+ module_name(THIS_MODULE),
+ brd_name, adapter->ahw.revision_id);
+ }
+
+ if (adapter->fw_version < QLCNIC_VERSION_CODE(3, 4, 216)) {
+ adapter->driver_mismatch = 1;
+ dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
+ fw_major, fw_minor, fw_build);
+ return;
+ }
+
+ i = QLCRD32(adapter, QLCNIC_SRE_MISC);
+ adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
+
+ dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
+ fw_major, fw_minor, fw_build,
+ adapter->ahw.cut_through ? "cut-through" : "legacy");
+
+ if (adapter->fw_version >= QLCNIC_VERSION_CODE(4, 0, 222))
+ adapter->capabilities = QLCRD32(adapter, CRB_FW_CAPABILITIES_1);
+
+ adapter->flags &= ~QLCNIC_LRO_ENABLED;
+
+ if (adapter->ahw.port_type == QLCNIC_XGBE) {
+ adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
+ adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
+ } else if (adapter->ahw.port_type == QLCNIC_GBE) {
+ adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
+ adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
+ }
+
+ adapter->msix_supported = !!use_msi_x;
+ adapter->rss_supported = !!use_msi_x;
+
+ adapter->num_txd = MAX_CMD_DESCRIPTORS;
+
+ adapter->num_lro_rxd = 0;
+ adapter->max_rds_rings = 2;
+}
+
+static int
+qlcnic_start_firmware(struct qlcnic_adapter *adapter)
+{
+ int val, err, first_boot;
+
+ err = qlcnic_set_dma_mask(adapter);
+ if (err)
+ return err;
+
+ if (!qlcnic_can_start_firmware(adapter))
+ goto wait_init;
+
+ first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
+ if (first_boot == 0x55555555)
+ /* This is the first boot after power up */
+ QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
+
+ qlcnic_request_firmware(adapter);
+
+ err = qlcnic_need_fw_reset(adapter);
+ if (err < 0)
+ goto err_out;
+ if (err == 0)
+ goto wait_init;
+
+ if (first_boot != 0x55555555) {
+ QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
+ qlcnic_pinit_from_rom(adapter);
+ msleep(1);
+ }
+
+ QLCWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
+ QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
+ QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
+
+ qlcnic_set_port_mode(adapter);
+
+ err = qlcnic_load_firmware(adapter);
+ if (err)
+ goto err_out;
+
+ qlcnic_release_firmware(adapter);
+
+ val = (_QLCNIC_LINUX_MAJOR << 16)
+ | ((_QLCNIC_LINUX_MINOR << 8))
+ | (_QLCNIC_LINUX_SUBVERSION);
+ QLCWR32(adapter, CRB_DRIVER_VERSION, val);
+
+wait_init:
+ /* Handshake with the card before we register the devices. */
+ err = qlcnic_phantom_init(adapter);
+ if (err)
+ goto err_out;
+
+ QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
+
+ qlcnic_update_dma_mask(adapter);
+
+ qlcnic_check_options(adapter);
+
+ adapter->need_fw_reset = 0;
+
+ /* fall through and release firmware */
+
+err_out:
+ qlcnic_release_firmware(adapter);
+ return err;
+}
+
+static int
+qlcnic_request_irq(struct qlcnic_adapter *adapter)
+{
+ irq_handler_t handler;
+ struct qlcnic_host_sds_ring *sds_ring;
+ int err, ring;
+
+ unsigned long flags = 0;
+ struct net_device *netdev = adapter->netdev;
+ struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+ if (adapter->flags & QLCNIC_MSIX_ENABLED)
+ handler = qlcnic_msix_intr;
+ else if (adapter->flags & QLCNIC_MSI_ENABLED)
+ handler = qlcnic_msi_intr;
+ else {
+ flags |= IRQF_SHARED;
+ handler = qlcnic_intr;
+ }
+ adapter->irq = netdev->irq;
+
+ for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ sds_ring = &recv_ctx->sds_rings[ring];
+ sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
+ err = request_irq(sds_ring->irq, handler,
+ flags, sds_ring->name, sds_ring);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static void
+qlcnic_free_irq(struct qlcnic_adapter *adapter)
+{
+ int ring;
+ struct qlcnic_host_sds_ring *sds_ring;
+
+ struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+ for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ sds_ring = &recv_ctx->sds_rings[ring];
+ free_irq(sds_ring->irq, sds_ring);
+ }
+}
+
+static void
+qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
+{
+ adapter->coal.flags = QLCNIC_INTR_DEFAULT;
+ adapter->coal.normal.data.rx_time_us =
+ QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
+ adapter->coal.normal.data.rx_packets =
+ QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
+ adapter->coal.normal.data.tx_time_us =
+ QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
+ adapter->coal.normal.data.tx_packets =
+ QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
+}
+
+static int
+__qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
+{
+ if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+ return -EIO;
+
+ qlcnic_set_multi(netdev);
+ qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu);
+
+ adapter->ahw.linkup = 0;
+
+ if (adapter->max_sds_rings > 1)
+ qlcnic_config_rss(adapter, 1);
+
+ qlcnic_config_intr_coalesce(adapter);
+
+ if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
+ qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
+
+ qlcnic_napi_enable(adapter);
+
+ qlcnic_linkevent_request(adapter, 1);
+
+ set_bit(__QLCNIC_DEV_UP, &adapter->state);
+ return 0;
+}
+
+/* Usage: During resume and firmware recovery module.*/
+
+static int
+qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
+{
+ int err = 0;
+
+ rtnl_lock();
+ if (netif_running(netdev))
+ err = __qlcnic_up(adapter, netdev);
+ rtnl_unlock();
+
+ return err;
+}
+
+static void
+__qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
+{
+ if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+ return;
+
+ if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
+ return;
+
+ smp_mb();
+ spin_lock(&adapter->tx_clean_lock);
+ netif_carrier_off(netdev);
+ netif_tx_disable(netdev);
+
+ qlcnic_free_mac_list(adapter);
+
+ qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
+
+ qlcnic_napi_disable(adapter);
+
+ qlcnic_release_tx_buffers(adapter);
+ spin_unlock(&adapter->tx_clean_lock);
+}
+
+/* Usage: During suspend and firmware recovery module */
+
+static void
+qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
+{
+ rtnl_lock();
+ if (netif_running(netdev))
+ __qlcnic_down(adapter, netdev);
+ rtnl_unlock();
+
+}
+
+static int
+qlcnic_attach(struct qlcnic_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+ int err, ring;
+ struct qlcnic_host_rds_ring *rds_ring;
+
+ if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
+ return 0;
+
+ err = qlcnic_init_firmware(adapter);
+ if (err)
+ return err;
+
+ err = qlcnic_napi_add(adapter, netdev);
+ if (err)
+ return err;
+
+ err = qlcnic_alloc_sw_resources(adapter);
+ if (err) {
+ dev_err(&pdev->dev, "Error in setting sw resources\n");
+ return err;
+ }
+
+ err = qlcnic_alloc_hw_resources(adapter);
+ if (err) {
+ dev_err(&pdev->dev, "Error in setting hw resources\n");
+ goto err_out_free_sw;
+ }
+
+
+ for (ring = 0; ring < adapter->max_rds_rings; ring++) {
+ rds_ring = &adapter->recv_ctx.rds_rings[ring];
+ qlcnic_post_rx_buffers(adapter, ring, rds_ring);
+ }
+
+ err = qlcnic_request_irq(adapter);
+ if (err) {
+ dev_err(&pdev->dev, "failed to setup interrupt\n");
+ goto err_out_free_rxbuf;
+ }
+
+ qlcnic_init_coalesce_defaults(adapter);
+
+ qlcnic_create_sysfs_entries(adapter);
+
+ adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
+ return 0;
+
+err_out_free_rxbuf:
+ qlcnic_release_rx_buffers(adapter);
+ qlcnic_free_hw_resources(adapter);
+err_out_free_sw:
+ qlcnic_free_sw_resources(adapter);
+ return err;
+}
+
+static void
+qlcnic_detach(struct qlcnic_adapter *adapter)
+{
+ if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+ return;
+
+ qlcnic_remove_sysfs_entries(adapter);
+
+ qlcnic_free_hw_resources(adapter);
+ qlcnic_release_rx_buffers(adapter);
+ qlcnic_free_irq(adapter);
+ qlcnic_napi_del(adapter);
+ qlcnic_free_sw_resources(adapter);
+
+ adapter->is_up = 0;
+}
+
+int
+qlcnic_reset_context(struct qlcnic_adapter *adapter)
+{
+ int err = 0;
+ struct net_device *netdev = adapter->netdev;
+
+ if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+ return -EBUSY;
+
+ if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
+
+ netif_device_detach(netdev);
+
+ if (netif_running(netdev))
+ __qlcnic_down(adapter, netdev);
+
+ qlcnic_detach(adapter);
+
+ if (netif_running(netdev)) {
+ err = qlcnic_attach(adapter);
+ if (!err)
+ err = __qlcnic_up(adapter, netdev);
+
+ if (err)
+ goto done;
+ }
+
+ netif_device_attach(netdev);
+ }
+
+done:
+ clear_bit(__QLCNIC_RESETTING, &adapter->state);
+ return err;
+}
+
+static int
+qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
+ struct net_device *netdev)
+{
+ int err;
+ struct pci_dev *pdev = adapter->pdev;
+
+ adapter->rx_csum = 1;
+ adapter->mc_enabled = 0;
+ adapter->max_mc_count = 38;
+
+ netdev->netdev_ops = &qlcnic_netdev_ops;
+ netdev->watchdog_timeo = 2*HZ;
+
+ qlcnic_change_mtu(netdev, netdev->mtu);
+
+ SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
+
+ netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
+ netdev->features |= (NETIF_F_GRO);
+ netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
+
+ netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
+ netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
+
+ if (adapter->pci_using_dac) {
+ netdev->features |= NETIF_F_HIGHDMA;
+ netdev->vlan_features |= NETIF_F_HIGHDMA;
+ }
+
+ if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
+ netdev->features |= (NETIF_F_HW_VLAN_TX);
+
+ if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
+ netdev->features |= NETIF_F_LRO;
+
+ netdev->irq = adapter->msix_entries[0].vector;
+
+ INIT_WORK(&adapter->tx_timeout_task, qlcnic_tx_timeout_task);
+
+ if (qlcnic_read_mac_addr(adapter))
+ dev_warn(&pdev->dev, "failed to read mac addr\n");
+
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+
+ err = register_netdev(netdev);
+ if (err) {
+ dev_err(&pdev->dev, "failed to register net device\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static int __devinit
+qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct net_device *netdev = NULL;
+ struct qlcnic_adapter *adapter = NULL;
+ int err;
+ int pci_func_id = PCI_FUNC(pdev->devfn);
+ uint8_t revision_id;
+
+ err = pci_enable_device(pdev);
+ if (err)
+ return err;
+
+ if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+ err = -ENODEV;
+ goto err_out_disable_pdev;
+ }
+
+ err = pci_request_regions(pdev, qlcnic_driver_name);
+ if (err)
+ goto err_out_disable_pdev;
+
+ pci_set_master(pdev);
+
+ netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
+ if (!netdev) {
+ dev_err(&pdev->dev, "failed to allocate net_device\n");
+ err = -ENOMEM;
+ goto err_out_free_res;
+ }
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+
+ adapter = netdev_priv(netdev);
+ adapter->netdev = netdev;
+ adapter->pdev = pdev;
+ adapter->ahw.pci_func = pci_func_id;
+
+ revision_id = pdev->revision;
+ adapter->ahw.revision_id = revision_id;
+
+ rwlock_init(&adapter->ahw.crb_lock);
+ mutex_init(&adapter->ahw.mem_lock);
+
+ spin_lock_init(&adapter->tx_clean_lock);
+ INIT_LIST_HEAD(&adapter->mac_list);
+
+ err = qlcnic_setup_pci_map(adapter);
+ if (err)
+ goto err_out_free_netdev;
+
+ /* This will be reset for mezz cards */
+ adapter->portnum = pci_func_id;
+
+ err = qlcnic_get_board_info(adapter);
+ if (err) {
+ dev_err(&pdev->dev, "Error getting board config info.\n");
+ goto err_out_iounmap;
+ }
+
+
+ err = qlcnic_start_firmware(adapter);
+ if (err)
+ goto err_out_decr_ref;
+
+ /*
+ * See if the firmware gave us a virtual-physical port mapping.
+ */
+ adapter->physical_port = adapter->portnum;
+
+ qlcnic_clear_stats(adapter);
+
+ qlcnic_setup_intr(adapter);
+
+ err = qlcnic_setup_netdev(adapter, netdev);
+ if (err)
+ goto err_out_disable_msi;
+
+ pci_set_drvdata(pdev, adapter);
+
+ qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
+
+ switch (adapter->ahw.port_type) {
+ case QLCNIC_GBE:
+ dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
+ adapter->netdev->name);
+ break;
+ case QLCNIC_XGBE:
+ dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
+ adapter->netdev->name);
+ break;
+ }
+
+ qlcnic_create_diag_entries(adapter);
+
+ return 0;
+
+err_out_disable_msi:
+ qlcnic_teardown_intr(adapter);
+
+err_out_decr_ref:
+ qlcnic_clr_all_drv_state(adapter);
+
+err_out_iounmap:
+ qlcnic_cleanup_pci_map(adapter);
+
+err_out_free_netdev:
+ free_netdev(netdev);
+
+err_out_free_res:
+ pci_release_regions(pdev);
+
+err_out_disable_pdev:
+ pci_set_drvdata(pdev, NULL);
+ pci_disable_device(pdev);
+ return err;
+}
+
+static void __devexit qlcnic_remove(struct pci_dev *pdev)
+{
+ struct qlcnic_adapter *adapter;
+ struct net_device *netdev;
+
+ adapter = pci_get_drvdata(pdev);
+ if (adapter == NULL)
+ return;
+
+ netdev = adapter->netdev;
+
+ qlcnic_cancel_fw_work(adapter);
+
+ unregister_netdev(netdev);
+
+ cancel_work_sync(&adapter->tx_timeout_task);
+
+ qlcnic_detach(adapter);
+
+ qlcnic_clr_all_drv_state(adapter);
+
+ clear_bit(__QLCNIC_RESETTING, &adapter->state);
+
+ qlcnic_teardown_intr(adapter);
+
+ qlcnic_remove_diag_entries(adapter);
+
+ qlcnic_cleanup_pci_map(adapter);
+
+ qlcnic_release_firmware(adapter);
+
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+
+ free_netdev(netdev);
+}
+static int __qlcnic_shutdown(struct pci_dev *pdev)
+{
+ struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
+ struct net_device *netdev = adapter->netdev;
+ int retval;
+
+ netif_device_detach(netdev);
+
+ qlcnic_cancel_fw_work(adapter);
+
+ if (netif_running(netdev))
+ qlcnic_down(adapter, netdev);
+
+ cancel_work_sync(&adapter->tx_timeout_task);
+
+ qlcnic_detach(adapter);
+
+ qlcnic_clr_all_drv_state(adapter);
+
+ clear_bit(__QLCNIC_RESETTING, &adapter->state);
+
+ retval = pci_save_state(pdev);
+ if (retval)
+ return retval;
+
+ if (qlcnic_wol_supported(adapter)) {
+ pci_enable_wake(pdev, PCI_D3cold, 1);
+ pci_enable_wake(pdev, PCI_D3hot, 1);
+ }
+
+ return 0;
+}
+
+static void qlcnic_shutdown(struct pci_dev *pdev)
+{
+ if (__qlcnic_shutdown(pdev))
+ return;
+
+ pci_disable_device(pdev);
+}
+
+#ifdef CONFIG_PM
+static int
+qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ int retval;
+
+ retval = __qlcnic_shutdown(pdev);
+ if (retval)
+ return retval;
+
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+ return 0;
+}
+
+static int
+qlcnic_resume(struct pci_dev *pdev)
+{
+ struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
+ struct net_device *netdev = adapter->netdev;
+ int err;
+
+ err = pci_enable_device(pdev);
+ if (err)
+ return err;
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_set_master(pdev);
+ pci_restore_state(pdev);
+
+ adapter->ahw.crb_win = -1;
+ adapter->ahw.ocm_win = -1;
+
+ err = qlcnic_start_firmware(adapter);
+ if (err) {
+ dev_err(&pdev->dev, "failed to start firmware\n");
+ return err;
+ }
+
+ if (netif_running(netdev)) {
+ err = qlcnic_attach(adapter);
+ if (err)
+ goto err_out;
+
+ err = qlcnic_up(adapter, netdev);
+ if (err)
+ goto err_out_detach;
+
+
+ qlcnic_config_indev_addr(netdev, NETDEV_UP);
+ }
+
+ netif_device_attach(netdev);
+ qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
+ return 0;
+
+err_out_detach:
+ qlcnic_detach(adapter);
+err_out:
+ qlcnic_clr_all_drv_state(adapter);
+ return err;
+}
+#endif
+
+static int qlcnic_open(struct net_device *netdev)
+{
+ struct qlcnic_adapter *adapter = netdev_priv(netdev);
+ int err;
+
+ if (adapter->driver_mismatch)
+ return -EIO;
+
+ err = qlcnic_attach(adapter);
+ if (err)
+ return err;
+
+ err = __qlcnic_up(adapter, netdev);
+ if (err)
+ goto err_out;
+
+ netif_start_queue(netdev);
+
+ return 0;
+
+err_out:
+ qlcnic_detach(adapter);
+ return err;
+}
+
+/*
+ * qlcnic_close - Disables a network interface entry point
+ */
+static int qlcnic_close(struct net_device *netdev)
+{
+ struct qlcnic_adapter *adapter = netdev_priv(netdev);
+
+ __qlcnic_down(adapter, netdev);
+ return 0;
+}
+
+static void
+qlcnic_tso_check(struct net_device *netdev,
+ struct qlcnic_host_tx_ring *tx_ring,
+ struct cmd_desc_type0 *first_desc,
+ struct sk_buff *skb)
+{
+ u8 opcode = TX_ETHER_PKT;
+ __be16 protocol = skb->protocol;
+ u16 flags = 0, vid = 0;
+ u32 producer;
+ int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
+ struct cmd_desc_type0 *hwdesc;
+ struct vlan_ethhdr *vh;
+
+ if (protocol == cpu_to_be16(ETH_P_8021Q)) {
+
+ vh = (struct vlan_ethhdr *)skb->data;
+ protocol = vh->h_vlan_encapsulated_proto;
+ flags = FLAGS_VLAN_TAGGED;
+
+ } else if (vlan_tx_tag_present(skb)) {
+
+ flags = FLAGS_VLAN_OOB;
+ vid = vlan_tx_tag_get(skb);
+ qlcnic_set_tx_vlan_tci(first_desc, vid);
+ vlan_oob = 1;
+ }
+
+ if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
+ skb_shinfo(skb)->gso_size > 0) {
+
+ hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
+
+ first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
+ first_desc->total_hdr_length = hdr_len;
+ if (vlan_oob) {
+ first_desc->total_hdr_length += VLAN_HLEN;
+ first_desc->tcp_hdr_offset = VLAN_HLEN;
+ first_desc->ip_hdr_offset = VLAN_HLEN;
+ /* Only in case of TSO on vlan device */
+ flags |= FLAGS_VLAN_TAGGED;
+ }
+
+ opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
+ TX_TCP_LSO6 : TX_TCP_LSO;
+ tso = 1;
+
+ } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ u8 l4proto;
+
+ if (protocol == cpu_to_be16(ETH_P_IP)) {
+ l4proto = ip_hdr(skb)->protocol;
+
+ if (l4proto == IPPROTO_TCP)
+ opcode = TX_TCP_PKT;
+ else if (l4proto == IPPROTO_UDP)
+ opcode = TX_UDP_PKT;
+ } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
+ l4proto = ipv6_hdr(skb)->nexthdr;
+
+ if (l4proto == IPPROTO_TCP)
+ opcode = TX_TCPV6_PKT;
+ else if (l4proto == IPPROTO_UDP)
+ opcode = TX_UDPV6_PKT;
+ }
+ }
+
+ first_desc->tcp_hdr_offset += skb_transport_offset(skb);
+ first_desc->ip_hdr_offset += skb_network_offset(skb);
+ qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
+
+ if (!tso)
+ return;
+
+ /* For LSO, we need to copy the MAC/IP/TCP headers into
+ * the descriptor ring
+ */
+ producer = tx_ring->producer;
+ copied = 0;
+ offset = 2;
+
+ if (vlan_oob) {
+ /* Create a TSO vlan header template for firmware */
+
+ hwdesc = &tx_ring->desc_head[producer];
+ tx_ring->cmd_buf_arr[producer].skb = NULL;
+
+ copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
+ hdr_len + VLAN_HLEN);
+
+ vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
+ skb_copy_from_linear_data(skb, vh, 12);
+ vh->h_vlan_proto = htons(ETH_P_8021Q);
+ vh->h_vlan_TCI = htons(vid);
+ skb_copy_from_linear_data_offset(skb, 12,
+ (char *)vh + 16, copy_len - 16);
+
+ copied = copy_len - VLAN_HLEN;
+ offset = 0;
+
+ producer = get_next_index(producer, tx_ring->num_desc);
+ }
+
+ while (copied < hdr_len) {
+
+ copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
+ (hdr_len - copied));
+
+ hwdesc = &tx_ring->desc_head[producer];
+ tx_ring->cmd_buf_arr[producer].skb = NULL;
+
+ skb_copy_from_linear_data_offset(skb, copied,
+ (char *)hwdesc + offset, copy_len);
+
+ copied += copy_len;
+ offset = 0;
+
+ producer = get_next_index(producer, tx_ring->num_desc);
+ }
+
+ tx_ring->producer = producer;
+ barrier();
+}
+
+static int
+qlcnic_map_tx_skb(struct pci_dev *pdev,
+ struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
+{
+ struct qlcnic_skb_frag *nf;
+ struct skb_frag_struct *frag;
+ int i, nr_frags;
+ dma_addr_t map;
+
+ nr_frags = skb_shinfo(skb)->nr_frags;
+ nf = &pbuf->frag_array[0];
+
+ map = pci_map_single(pdev, skb->data,
+ skb_headlen(skb), PCI_DMA_TODEVICE);
+ if (pci_dma_mapping_error(pdev, map))
+ goto out_err;
+
+ nf->dma = map;
+ nf->length = skb_headlen(skb);
+
+ for (i = 0; i < nr_frags; i++) {
+ frag = &skb_shinfo(skb)->frags[i];
+ nf = &pbuf->frag_array[i+1];
+
+ map = pci_map_page(pdev, frag->page, frag->page_offset,
+ frag->size, PCI_DMA_TODEVICE);
+ if (pci_dma_mapping_error(pdev, map))
+ goto unwind;
+
+ nf->dma = map;
+ nf->length = frag->size;
+ }
+
+ return 0;
+
+unwind:
+ while (--i >= 0) {
+ nf = &pbuf->frag_array[i+1];
+ pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
+ }
+
+ nf = &pbuf->frag_array[0];
+ pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
+
+out_err:
+ return -ENOMEM;
+}
+
+static inline void
+qlcnic_clear_cmddesc(u64 *desc)
+{
+ desc[0] = 0ULL;
+ desc[2] = 0ULL;
+}
+
+static netdev_tx_t
+qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct qlcnic_adapter *adapter = netdev_priv(netdev);
+ struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
+ struct qlcnic_cmd_buffer *pbuf;
+ struct qlcnic_skb_frag *buffrag;
+ struct cmd_desc_type0 *hwdesc, *first_desc;
+ struct pci_dev *pdev;
+ int i, k;
+
+ u32 producer;
+ int frag_count, no_of_desc;
+ u32 num_txd = tx_ring->num_desc;
+
+ frag_count = skb_shinfo(skb)->nr_frags + 1;
+
+ /* 4 fragments per cmd des */
+ no_of_desc = (frag_count + 3) >> 2;
+
+ if (unlikely(no_of_desc + 2 > qlcnic_tx_avail(tx_ring))) {
+ netif_stop_queue(netdev);
+ return NETDEV_TX_BUSY;
+ }
+
+ producer = tx_ring->producer;
+ pbuf = &tx_ring->cmd_buf_arr[producer];
+
+ pdev = adapter->pdev;
+
+ if (qlcnic_map_tx_skb(pdev, skb, pbuf))
+ goto drop_packet;
+
+ pbuf->skb = skb;
+ pbuf->frag_count = frag_count;
+
+ first_desc = hwdesc = &tx_ring->desc_head[producer];
+ qlcnic_clear_cmddesc((u64 *)hwdesc);
+
+ qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
+ qlcnic_set_tx_port(first_desc, adapter->portnum);
+
+ for (i = 0; i < frag_count; i++) {
+
+ k = i % 4;
+
+ if ((k == 0) && (i > 0)) {
+ /* move to next desc.*/
+ producer = get_next_index(producer, num_txd);
+ hwdesc = &tx_ring->desc_head[producer];
+ qlcnic_clear_cmddesc((u64 *)hwdesc);
+ tx_ring->cmd_buf_arr[producer].skb = NULL;
+ }
+
+ buffrag = &pbuf->frag_array[i];
+
+ hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
+ switch (k) {
+ case 0:
+ hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
+ break;
+ case 1:
+ hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
+ break;
+ case 2:
+ hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
+ break;
+ case 3:
+ hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
+ break;
+ }
+ }
+
+ tx_ring->producer = get_next_index(producer, num_txd);
+
+ qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
+
+ qlcnic_update_cmd_producer(adapter, tx_ring);
+
+ adapter->stats.txbytes += skb->len;
+ adapter->stats.xmitcalled++;
+
+ return NETDEV_TX_OK;
+
+drop_packet:
+ adapter->stats.txdropped++;
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+}
+
+static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ u32 temp, temp_state, temp_val;
+ int rv = 0;
+
+ temp = QLCRD32(adapter, CRB_TEMP_STATE);
+
+ temp_state = qlcnic_get_temp_state(temp);
+ temp_val = qlcnic_get_temp_val(temp);
+
+ if (temp_state == QLCNIC_TEMP_PANIC) {
+ dev_err(&netdev->dev,
+ "Device temperature %d degrees C exceeds"
+ " maximum allowed. Hardware has been shut down.\n",
+ temp_val);
+ rv = 1;
+ } else if (temp_state == QLCNIC_TEMP_WARN) {
+ if (adapter->temp == QLCNIC_TEMP_NORMAL) {
+ dev_err(&netdev->dev,
+ "Device temperature %d degrees C "
+ "exceeds operating range."
+ " Immediate action needed.\n",
+ temp_val);
+ }
+ } else {
+ if (adapter->temp == QLCNIC_TEMP_WARN) {
+ dev_info(&netdev->dev,
+ "Device temperature is now %d degrees C"
+ " in normal range.\n", temp_val);
+ }
+ }
+ adapter->temp = temp_state;
+ return rv;
+}
+
+void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
+{
+ struct net_device *netdev = adapter->netdev;
+
+ if (adapter->ahw.linkup && !linkup) {
+ dev_info(&netdev->dev, "NIC Link is down\n");
+ adapter->ahw.linkup = 0;
+ if (netif_running(netdev)) {
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+ }
+ } else if (!adapter->ahw.linkup && linkup) {
+ dev_info(&netdev->dev, "NIC Link is up\n");
+ adapter->ahw.linkup = 1;
+ if (netif_running(netdev)) {
+ netif_carrier_on(netdev);
+ netif_wake_queue(netdev);
+ }
+ }
+}
+
+static void qlcnic_tx_timeout(struct net_device *netdev)
+{
+ struct qlcnic_adapter *adapter = netdev_priv(netdev);
+
+ if (test_bit(__QLCNIC_RESETTING, &adapter->state))
+ return;
+
+ dev_err(&netdev->dev, "transmit timeout, resetting.\n");
+ schedule_work(&adapter->tx_timeout_task);
+}
+
+static void qlcnic_tx_timeout_task(struct work_struct *work)
+{
+ struct qlcnic_adapter *adapter =
+ container_of(work, struct qlcnic_adapter, tx_timeout_task);
+
+ if (!netif_running(adapter->netdev))
+ return;
+
+ if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+ return;
+
+ if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
+ goto request_reset;
+
+ clear_bit(__QLCNIC_RESETTING, &adapter->state);
+ if (!qlcnic_reset_context(adapter)) {
+ adapter->netdev->trans_start = jiffies;
+ return;
+
+ /* context reset failed, fall through for fw reset */
+ }
+
+request_reset:
+ adapter->need_fw_reset = 1;
+ clear_bit(__QLCNIC_RESETTING, &adapter->state);
+}
+
+static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
+{
+ struct qlcnic_adapter *adapter = netdev_priv(netdev);
+ struct net_device_stats *stats = &netdev->stats;
+
+ memset(stats, 0, sizeof(*stats));
+
+ stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
+ stats->tx_packets = adapter->stats.xmitfinished;
+ stats->rx_bytes = adapter->stats.rxbytes;
+ stats->tx_bytes = adapter->stats.txbytes;
+ stats->rx_dropped = adapter->stats.rxdropped;
+ stats->tx_dropped = adapter->stats.txdropped;
+
+ return stats;
+}
+
+static irqreturn_t qlcnic_intr(int irq, void *data)
+{
+ struct qlcnic_host_sds_ring *sds_ring = data;
+ struct qlcnic_adapter *adapter = sds_ring->adapter;
+ u32 status;
+
+ status = readl(adapter->isr_int_vec);
+
+ if (!(status & adapter->int_vec_bit))
+ return IRQ_NONE;
+
+ /* check interrupt state machine, to be sure */
+ status = readl(adapter->crb_int_state_reg);
+ if (!ISR_LEGACY_INT_TRIGGERED(status))
+ return IRQ_NONE;
+
+ writel(0xffffffff, adapter->tgt_status_reg);
+ /* read twice to ensure write is flushed */
+ readl(adapter->isr_int_vec);
+ readl(adapter->isr_int_vec);
+
+ napi_schedule(&sds_ring->napi);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t qlcnic_msi_intr(int irq, void *data)
+{
+ struct qlcnic_host_sds_ring *sds_ring = data;
+ struct qlcnic_adapter *adapter = sds_ring->adapter;
+
+ /* clear interrupt */
+ writel(0xffffffff, adapter->tgt_status_reg);
+
+ napi_schedule(&sds_ring->napi);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t qlcnic_msix_intr(int irq, void *data)
+{
+ struct qlcnic_host_sds_ring *sds_ring = data;
+
+ napi_schedule(&sds_ring->napi);
+ return IRQ_HANDLED;
+}
+
+static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
+{
+ u32 sw_consumer, hw_consumer;
+ int count = 0, i;
+ struct qlcnic_cmd_buffer *buffer;
+ struct pci_dev *pdev = adapter->pdev;
+ struct net_device *netdev = adapter->netdev;
+ struct qlcnic_skb_frag *frag;
+ int done;
+ struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
+
+ if (!spin_trylock(&adapter->tx_clean_lock))
+ return 1;
+
+ sw_consumer = tx_ring->sw_consumer;
+ hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
+
+ while (sw_consumer != hw_consumer) {
+ buffer = &tx_ring->cmd_buf_arr[sw_consumer];
+ if (buffer->skb) {
+ frag = &buffer->frag_array[0];
+ pci_unmap_single(pdev, frag->dma, frag->length,
+ PCI_DMA_TODEVICE);
+ frag->dma = 0ULL;
+ for (i = 1; i < buffer->frag_count; i++) {
+ frag++;
+ pci_unmap_page(pdev, frag->dma, frag->length,
+ PCI_DMA_TODEVICE);
+ frag->dma = 0ULL;
+ }
+
+ adapter->stats.xmitfinished++;
+ dev_kfree_skb_any(buffer->skb);
+ buffer->skb = NULL;
+ }
+
+ sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
+ if (++count >= MAX_STATUS_HANDLE)
+ break;
+ }
+
+ if (count && netif_running(netdev)) {
+ tx_ring->sw_consumer = sw_consumer;
+
+ smp_mb();
+
+ if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
+ __netif_tx_lock(tx_ring->txq, smp_processor_id());
+ if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
+ netif_wake_queue(netdev);
+ adapter->tx_timeo_cnt = 0;
+ }
+ __netif_tx_unlock(tx_ring->txq);
+ }
+ }
+ /*
+ * If everything is freed up to consumer then check if the ring is full
+ * If the ring is full then check if more needs to be freed and
+ * schedule the call back again.
+ *
+ * This happens when there are 2 CPUs. One could be freeing and the
+ * other filling it. If the ring is full when we get out of here and
+ * the card has already interrupted the host then the host can miss the
+ * interrupt.
+ *
+ * There is still a possible race condition and the host could miss an
+ * interrupt. The card has to take care of this.
+ */
+ hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
+ done = (sw_consumer == hw_consumer);
+ spin_unlock(&adapter->tx_clean_lock);
+
+ return done;
+}
+
+static int qlcnic_poll(struct napi_struct *napi, int budget)
+{
+ struct qlcnic_host_sds_ring *sds_ring =
+ container_of(napi, struct qlcnic_host_sds_ring, napi);
+
+ struct qlcnic_adapter *adapter = sds_ring->adapter;
+
+ int tx_complete;
+ int work_done;
+
+ tx_complete = qlcnic_process_cmd_ring(adapter);
+
+ work_done = qlcnic_process_rcv_ring(sds_ring, budget);
+
+ if ((work_done < budget) && tx_complete) {
+ napi_complete(&sds_ring->napi);
+ if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
+ qlcnic_enable_int(sds_ring);
+ }
+
+ return work_done;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void qlcnic_poll_controller(struct net_device *netdev)
+{
+ struct qlcnic_adapter *adapter = netdev_priv(netdev);
+ disable_irq(adapter->irq);
+ qlcnic_intr(adapter->irq, adapter);
+ enable_irq(adapter->irq);
+}
+#endif
+
+static void
+qlcnic_set_drv_state(struct qlcnic_adapter *adapter, int state)
+{
+ u32 val;
+
+ WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
+ state != QLCNIC_DEV_NEED_QUISCENT);
+
+ if (qlcnic_api_lock(adapter))
+ return ;
+
+ val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+
+ if (state == QLCNIC_DEV_NEED_RESET)
+ val |= ((u32)0x1 << (adapter->portnum * 4));
+ else if (state == QLCNIC_DEV_NEED_QUISCENT)
+ val |= ((u32)0x1 << ((adapter->portnum * 4) + 1));
+
+ QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
+
+ qlcnic_api_unlock(adapter);
+}
+
+static void
+qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
+{
+ u32 val;
+
+ if (qlcnic_api_lock(adapter))
+ goto err;
+
+ val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
+ val &= ~((u32)0x1 << (adapter->portnum * 4));
+ QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
+
+ if (!(val & 0x11111111))
+ QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
+
+ val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+ val &= ~((u32)0x3 << (adapter->portnum * 4));
+ QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
+
+ qlcnic_api_unlock(adapter);
+err:
+ adapter->fw_fail_cnt = 0;
+ clear_bit(__QLCNIC_START_FW, &adapter->state);
+ clear_bit(__QLCNIC_RESETTING, &adapter->state);
+}
+
+static int
+qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
+{
+ int act, state;
+
+ state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+ act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
+
+ if (((state & 0x11111111) == (act & 0x11111111)) ||
+ ((act & 0x11111111) == ((state >> 1) & 0x11111111)))
+ return 0;
+ else
+ return 1;
+}
+
+static int
+qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
+{
+ u32 val, prev_state;
+ int cnt = 0;
+ int portnum = adapter->portnum;
+
+ if (qlcnic_api_lock(adapter))
+ return -1;
+
+ val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
+ if (!(val & ((int)0x1 << (portnum * 4)))) {
+ val |= ((u32)0x1 << (portnum * 4));
+ QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
+ } else if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state)) {
+ goto start_fw;
+ }
+
+ prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
+
+ switch (prev_state) {
+ case QLCNIC_DEV_COLD:
+start_fw:
+ QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITALIZING);
+ qlcnic_api_unlock(adapter);
+ return 1;
+
+ case QLCNIC_DEV_READY:
+ qlcnic_api_unlock(adapter);
+ return 0;
+
+ case QLCNIC_DEV_NEED_RESET:
+ val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+ val |= ((u32)0x1 << (portnum * 4));
+ QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
+ break;
+
+ case QLCNIC_DEV_NEED_QUISCENT:
+ val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+ val |= ((u32)0x1 << ((portnum * 4) + 1));
+ QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
+ break;
+
+ case QLCNIC_DEV_FAILED:
+ qlcnic_api_unlock(adapter);
+ return -1;
+ }
+
+ qlcnic_api_unlock(adapter);
+ msleep(1000);
+ while ((QLCRD32(adapter, QLCNIC_CRB_DEV_STATE) != QLCNIC_DEV_READY) &&
+ ++cnt < 20)
+ msleep(1000);
+
+ if (cnt >= 20)
+ return -1;
+
+ if (qlcnic_api_lock(adapter))
+ return -1;
+
+ val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+ val &= ~((u32)0x3 << (portnum * 4));
+ QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
+
+ qlcnic_api_unlock(adapter);
+
+ return 0;
+}
+
+static void
+qlcnic_fwinit_work(struct work_struct *work)
+{
+ struct qlcnic_adapter *adapter = container_of(work,
+ struct qlcnic_adapter, fw_work.work);
+ int dev_state;
+
+ if (++adapter->fw_wait_cnt > FW_POLL_THRESH)
+ goto err_ret;
+
+ if (test_bit(__QLCNIC_START_FW, &adapter->state)) {
+
+ if (qlcnic_check_drv_state(adapter)) {
+ qlcnic_schedule_work(adapter,
+ qlcnic_fwinit_work, FW_POLL_DELAY);
+ return;
+ }
+
+ if (!qlcnic_start_firmware(adapter)) {
+ qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
+ return;
+ }
+
+ goto err_ret;
+ }
+
+ dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
+ switch (dev_state) {
+ case QLCNIC_DEV_READY:
+ if (!qlcnic_start_firmware(adapter)) {
+ qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
+ return;
+ }
+ case QLCNIC_DEV_FAILED:
+ break;
+
+ default:
+ qlcnic_schedule_work(adapter,
+ qlcnic_fwinit_work, 2 * FW_POLL_DELAY);
+ return;
+ }
+
+err_ret:
+ qlcnic_clr_all_drv_state(adapter);
+}
+
+static void
+qlcnic_detach_work(struct work_struct *work)
+{
+ struct qlcnic_adapter *adapter = container_of(work,
+ struct qlcnic_adapter, fw_work.work);
+ struct net_device *netdev = adapter->netdev;
+ u32 status;
+
+ netif_device_detach(netdev);
+
+ qlcnic_down(adapter, netdev);
+
+ qlcnic_detach(adapter);
+
+ status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
+
+ if (status & QLCNIC_RCODE_FATAL_ERROR)
+ goto err_ret;
+
+ if (adapter->temp == QLCNIC_TEMP_PANIC)
+ goto err_ret;
+
+ qlcnic_set_drv_state(adapter, adapter->dev_state);
+
+ adapter->fw_wait_cnt = 0;
+
+ qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
+
+ return;
+
+err_ret:
+ qlcnic_clr_all_drv_state(adapter);
+
+}
+
+static void
+qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
+{
+ u32 state;
+
+ if (qlcnic_api_lock(adapter))
+ return;
+
+ state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
+
+ if (state != QLCNIC_DEV_INITALIZING && state != QLCNIC_DEV_NEED_RESET) {
+ QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
+ set_bit(__QLCNIC_START_FW, &adapter->state);
+ }
+
+ qlcnic_api_unlock(adapter);
+}
+
+static void
+qlcnic_schedule_work(struct qlcnic_adapter *adapter,
+ work_func_t func, int delay)
+{
+ INIT_DELAYED_WORK(&adapter->fw_work, func);
+ schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
+}
+
+static void
+qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
+{
+ while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+ msleep(10);
+
+ cancel_delayed_work_sync(&adapter->fw_work);
+}
+
+static void
+qlcnic_attach_work(struct work_struct *work)
+{
+ struct qlcnic_adapter *adapter = container_of(work,
+ struct qlcnic_adapter, fw_work.work);
+ struct net_device *netdev = adapter->netdev;
+ int err;
+
+ if (netif_running(netdev)) {
+ err = qlcnic_attach(adapter);
+ if (err)
+ goto done;
+
+ err = qlcnic_up(adapter, netdev);
+ if (err) {
+ qlcnic_detach(adapter);
+ goto done;
+ }
+
+ qlcnic_config_indev_addr(netdev, NETDEV_UP);
+ }
+
+ netif_device_attach(netdev);
+
+done:
+ adapter->fw_fail_cnt = 0;
+ clear_bit(__QLCNIC_RESETTING, &adapter->state);
+ qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
+}
+
+static int
+qlcnic_check_health(struct qlcnic_adapter *adapter)
+{
+ u32 state = 0, heartbit;
+ struct net_device *netdev = adapter->netdev;
+
+ if (qlcnic_check_temp(adapter))
+ goto detach;
+
+ if (adapter->need_fw_reset) {
+ qlcnic_dev_request_reset(adapter);
+ goto detach;
+ }
+
+ state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
+ if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
+ adapter->need_fw_reset = 1;
+
+ heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
+ if (heartbit != adapter->heartbit) {
+ adapter->heartbit = heartbit;
+ adapter->fw_fail_cnt = 0;
+ if (adapter->need_fw_reset)
+ goto detach;
+ return 0;
+ }
+
+ if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
+ return 0;
+
+ qlcnic_dev_request_reset(adapter);
+
+ clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
+
+ dev_info(&netdev->dev, "firmware hang detected\n");
+
+detach:
+ adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
+ QLCNIC_DEV_NEED_RESET;
+
+ if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
+ !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+ qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
+
+ return 1;
+}
+
+static void
+qlcnic_fw_poll_work(struct work_struct *work)
+{
+ struct qlcnic_adapter *adapter = container_of(work,
+ struct qlcnic_adapter, fw_work.work);
+
+ if (test_bit(__QLCNIC_RESETTING, &adapter->state))
+ goto reschedule;
+
+
+ if (qlcnic_check_health(adapter))
+ return;
+
+reschedule:
+ qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
+}
+
+static ssize_t
+qlcnic_store_bridged_mode(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t len)
+{
+ struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+ unsigned long new;
+ int ret = -EINVAL;
+
+ if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
+ goto err_out;
+
+ if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+ goto err_out;
+
+ if (strict_strtoul(buf, 2, &new))
+ goto err_out;
+
+ if (!qlcnic_config_bridged_mode(adapter, !!new))
+ ret = len;
+
+err_out:
+ return ret;
+}
+
+static ssize_t
+qlcnic_show_bridged_mode(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+ int bridged_mode = 0;
+
+ if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
+ bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
+
+ return sprintf(buf, "%d\n", bridged_mode);
+}
+
+static struct device_attribute dev_attr_bridged_mode = {
+ .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
+ .show = qlcnic_show_bridged_mode,
+ .store = qlcnic_store_bridged_mode,
+};
+
+static ssize_t
+qlcnic_store_diag_mode(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t len)
+{
+ struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+ unsigned long new;
+
+ if (strict_strtoul(buf, 2, &new))
+ return -EINVAL;
+
+ if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
+ adapter->flags ^= QLCNIC_DIAG_ENABLED;
+
+ return len;
+}
+
+static ssize_t
+qlcnic_show_diag_mode(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n",
+ !!(adapter->flags & QLCNIC_DIAG_ENABLED));
+}
+
+static struct device_attribute dev_attr_diag_mode = {
+ .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
+ .show = qlcnic_show_diag_mode,
+ .store = qlcnic_store_diag_mode,
+};
+
+static int
+qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
+ loff_t offset, size_t size)
+{
+ if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
+ return -EIO;
+
+ if ((size != 4) || (offset & 0x3))
+ return -EINVAL;
+
+ if (offset < QLCNIC_PCI_CRBSPACE)
+ return -EINVAL;
+
+ return 0;
+}
+
+static ssize_t
+qlcnic_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
+ char *buf, loff_t offset, size_t size)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+ u32 data;
+ int ret;
+
+ ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
+ if (ret != 0)
+ return ret;
+
+ data = QLCRD32(adapter, offset);
+ memcpy(buf, &data, size);
+ return size;
+}
+
+static ssize_t
+qlcnic_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
+ char *buf, loff_t offset, size_t size)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+ u32 data;
+ int ret;
+
+ ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
+ if (ret != 0)
+ return ret;
+
+ memcpy(&data, buf, size);
+ QLCWR32(adapter, offset, data);
+ return size;
+}
+
+static int
+qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
+ loff_t offset, size_t size)
+{
+ if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
+ return -EIO;
+
+ if ((size != 8) || (offset & 0x7))
+ return -EIO;
+
+ return 0;
+}
+
+static ssize_t
+qlcnic_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
+ char *buf, loff_t offset, size_t size)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+ u64 data;
+ int ret;
+
+ ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
+ if (ret != 0)
+ return ret;
+
+ if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
+ return -EIO;
+
+ memcpy(buf, &data, size);
+
+ return size;
+}
+
+static ssize_t
+qlcnic_sysfs_write_mem(struct kobject *kobj, struct bin_attribute *attr,
+ char *buf, loff_t offset, size_t size)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+ u64 data;
+ int ret;
+
+ ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
+ if (ret != 0)
+ return ret;
+
+ memcpy(&data, buf, size);
+
+ if (qlcnic_pci_mem_write_2M(adapter, offset, data))
+ return -EIO;
+
+ return size;
+}
+
+
+static struct bin_attribute bin_attr_crb = {
+ .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
+ .size = 0,
+ .read = qlcnic_sysfs_read_crb,
+ .write = qlcnic_sysfs_write_crb,
+};
+
+static struct bin_attribute bin_attr_mem = {
+ .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
+ .size = 0,
+ .read = qlcnic_sysfs_read_mem,
+ .write = qlcnic_sysfs_write_mem,
+};
+
+static void
+qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
+{
+ struct device *dev = &adapter->pdev->dev;
+
+ if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
+ if (device_create_file(dev, &dev_attr_bridged_mode))
+ dev_warn(dev,
+ "failed to create bridged_mode sysfs entry\n");
+}
+
+static void
+qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
+{
+ struct device *dev = &adapter->pdev->dev;
+
+ if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
+ device_remove_file(dev, &dev_attr_bridged_mode);
+}
+
+static void
+qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
+{
+ struct device *dev = &adapter->pdev->dev;
+
+ if (device_create_file(dev, &dev_attr_diag_mode))
+ dev_info(dev, "failed to create diag_mode sysfs entry\n");
+ if (device_create_bin_file(dev, &bin_attr_crb))
+ dev_info(dev, "failed to create crb sysfs entry\n");
+ if (device_create_bin_file(dev, &bin_attr_mem))
+ dev_info(dev, "failed to create mem sysfs entry\n");
+}
+
+
+static void
+qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
+{
+ struct device *dev = &adapter->pdev->dev;
+
+ device_remove_file(dev, &dev_attr_diag_mode);
+ device_remove_bin_file(dev, &bin_attr_crb);
+ device_remove_bin_file(dev, &bin_attr_mem);
+}
+
+#ifdef CONFIG_INET
+
+#define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
+
+static int
+qlcnic_destip_supported(struct qlcnic_adapter *adapter)
+{
+ if (adapter->ahw.cut_through)
+ return 0;
+
+ return 1;
+}
+
+static void
+qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
+{
+ struct in_device *indev;
+ struct qlcnic_adapter *adapter = netdev_priv(dev);
+
+ if (!qlcnic_destip_supported(adapter))
+ return;
+
+ indev = in_dev_get(dev);
+ if (!indev)
+ return;
+
+ for_ifa(indev) {
+ switch (event) {
+ case NETDEV_UP:
+ qlcnic_config_ipaddr(adapter,
+ ifa->ifa_address, QLCNIC_IP_UP);
+ break;
+ case NETDEV_DOWN:
+ qlcnic_config_ipaddr(adapter,
+ ifa->ifa_address, QLCNIC_IP_DOWN);
+ break;
+ default:
+ break;
+ }
+ } endfor_ifa(indev);
+
+ in_dev_put(indev);
+ return;
+}
+
+static int qlcnic_netdev_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct qlcnic_adapter *adapter;
+ struct net_device *dev = (struct net_device *)ptr;
+
+recheck:
+ if (dev == NULL)
+ goto done;
+
+ if (dev->priv_flags & IFF_802_1Q_VLAN) {
+ dev = vlan_dev_real_dev(dev);
+ goto recheck;
+ }
+
+ if (!is_qlcnic_netdev(dev))
+ goto done;
+
+ adapter = netdev_priv(dev);
+
+ if (!adapter)
+ goto done;
+
+ if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+ goto done;
+
+ qlcnic_config_indev_addr(dev, event);
+done:
+ return NOTIFY_DONE;
+}
+
+static int
+qlcnic_inetaddr_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct qlcnic_adapter *adapter;
+ struct net_device *dev;
+
+ struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
+
+ dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
+
+recheck:
+ if (dev == NULL || !netif_running(dev))
+ goto done;
+
+ if (dev->priv_flags & IFF_802_1Q_VLAN) {
+ dev = vlan_dev_real_dev(dev);
+ goto recheck;
+ }
+
+ if (!is_qlcnic_netdev(dev))
+ goto done;
+
+ adapter = netdev_priv(dev);
+
+ if (!adapter || !qlcnic_destip_supported(adapter))
+ goto done;
+
+ if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+ goto done;
+
+ switch (event) {
+ case NETDEV_UP:
+ qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
+ break;
+ case NETDEV_DOWN:
+ qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
+ break;
+ default:
+ break;
+ }
+
+done:
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block qlcnic_netdev_cb = {
+ .notifier_call = qlcnic_netdev_event,
+};
+
+static struct notifier_block qlcnic_inetaddr_cb = {
+ .notifier_call = qlcnic_inetaddr_event,
+};
+#else
+static void
+qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
+{ }
+#endif
+
+static struct pci_driver qlcnic_driver = {
+ .name = qlcnic_driver_name,
+ .id_table = qlcnic_pci_tbl,
+ .probe = qlcnic_probe,
+ .remove = __devexit_p(qlcnic_remove),
+#ifdef CONFIG_PM
+ .suspend = qlcnic_suspend,
+ .resume = qlcnic_resume,
+#endif
+ .shutdown = qlcnic_shutdown
+};
+
+static int __init qlcnic_init_module(void)
+{
+
+ printk(KERN_INFO "%s\n", qlcnic_driver_string);
+
+#ifdef CONFIG_INET
+ register_netdevice_notifier(&qlcnic_netdev_cb);
+ register_inetaddr_notifier(&qlcnic_inetaddr_cb);
+#endif
+
+
+ return pci_register_driver(&qlcnic_driver);
+}
+
+module_init(qlcnic_init_module);
+
+static void __exit qlcnic_exit_module(void)
+{
+
+ pci_unregister_driver(&qlcnic_driver);
+
+#ifdef CONFIG_INET
+ unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
+ unregister_netdevice_notifier(&qlcnic_netdev_cb);
+#endif
+}
+
+module_exit(qlcnic_exit_module);
