2 * Copyright (C) 2003 - 2009 NetXen, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
23 * Contact Information:
27 * Cupertino, CA 95014-0701
31 #include <linux/vmalloc.h>
32 #include <linux/highmem.h>
33 #include "netxen_nic_hw.h"
35 #include "netxen_nic.h"
36 #include "netxen_nic_phan_reg.h"
38 #include <linux/dma-mapping.h>
39 #include <linux/if_vlan.h>
41 #include <linux/ipv6.h>
43 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
44 MODULE_LICENSE("GPL");
45 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
47 char netxen_nic_driver_name[] = "netxen_nic";
48 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
49 NETXEN_NIC_LINUX_VERSIONID;
51 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
53 /* Default to restricted 1G auto-neg mode */
54 static int wol_port_mode = 5;
56 static int use_msi = 1;
58 static int use_msi_x = 1;
60 /* Local functions to NetXen NIC driver */
61 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
62 const struct pci_device_id *ent);
63 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
64 static int netxen_nic_open(struct net_device *netdev);
65 static int netxen_nic_close(struct net_device *netdev);
66 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
67 static void netxen_tx_timeout(struct net_device *netdev);
68 static void netxen_tx_timeout_task(struct work_struct *work);
69 static void netxen_watchdog(unsigned long);
70 static int netxen_nic_poll(struct napi_struct *napi, int budget);
71 #ifdef CONFIG_NET_POLL_CONTROLLER
72 static void netxen_nic_poll_controller(struct net_device *netdev);
74 static irqreturn_t netxen_intr(int irq, void *data);
75 static irqreturn_t netxen_msi_intr(int irq, void *data);
76 static irqreturn_t netxen_msix_intr(int irq, void *data);
78 /* PCI Device ID Table */
79 #define ENTRY(device) \
80 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
81 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
83 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
84 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
85 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
86 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
87 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
88 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
89 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
91 ENTRY(PCI_DEVICE_ID_NX3031),
95 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
97 static struct workqueue_struct *netxen_workq;
98 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
99 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
101 static void netxen_watchdog(unsigned long);
103 static uint32_t crb_cmd_producer[4] = {
104 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
105 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
109 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
110 uint32_t crb_producer)
112 adapter->pci_write_normalize(adapter,
113 adapter->crb_addr_cmd_producer, crb_producer);
116 static uint32_t crb_cmd_consumer[4] = {
117 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
118 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
122 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
125 adapter->pci_write_normalize(adapter,
126 adapter->crb_addr_cmd_consumer, crb_consumer);
129 static uint32_t msi_tgt_status[8] = {
130 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
131 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
132 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
133 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
136 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
138 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
140 struct netxen_adapter *adapter = sds_ring->adapter;
142 adapter->pci_write_normalize(adapter, sds_ring->crb_intr_mask, 0);
145 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
147 struct netxen_adapter *adapter = sds_ring->adapter;
149 adapter->pci_write_normalize(adapter, sds_ring->crb_intr_mask, 0x1);
151 if (!NETXEN_IS_MSI_FAMILY(adapter))
152 adapter->pci_write_immediate(adapter,
153 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
157 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
160 struct nx_host_sds_ring *sds_ring;
161 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
163 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
164 adapter->max_sds_rings = (num_online_cpus() >= 4) ? 4 : 2;
166 adapter->max_sds_rings = 1;
168 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
169 sds_ring = &recv_ctx->sds_rings[ring];
170 netif_napi_add(netdev, &sds_ring->napi,
171 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
176 netxen_napi_enable(struct netxen_adapter *adapter)
179 struct nx_host_sds_ring *sds_ring;
180 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
182 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
183 sds_ring = &recv_ctx->sds_rings[ring];
184 napi_enable(&sds_ring->napi);
185 netxen_nic_enable_int(sds_ring);
190 netxen_napi_disable(struct netxen_adapter *adapter)
193 struct nx_host_sds_ring *sds_ring;
194 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
196 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
197 sds_ring = &recv_ctx->sds_rings[ring];
198 netxen_nic_disable_int(sds_ring);
199 napi_disable(&sds_ring->napi);
203 static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
205 struct pci_dev *pdev = adapter->pdev;
206 uint64_t mask, cmask;
208 adapter->pci_using_dac = 0;
210 mask = DMA_32BIT_MASK;
212 * Consistent DMA mask is set to 32 bit because it cannot be set to
213 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
214 * come off this pool.
216 cmask = DMA_32BIT_MASK;
219 if (revision_id >= NX_P3_B0)
220 mask = DMA_39BIT_MASK;
221 else if (revision_id == NX_P2_C1)
222 mask = DMA_35BIT_MASK;
224 if (pci_set_dma_mask(pdev, mask) == 0 &&
225 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
226 adapter->pci_using_dac = 1;
233 /* Update addressable range if firmware supports it */
235 nx_update_dma_mask(struct netxen_adapter *adapter)
237 int change, shift, err;
238 uint64_t mask, old_mask;
239 struct pci_dev *pdev = adapter->pdev;
243 shift = netxen_nic_reg_read(adapter, CRB_DMA_SHIFT);
247 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
249 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
253 old_mask = pdev->dma_mask;
254 mask = (1ULL<<(32+shift)) - 1;
256 err = pci_set_dma_mask(pdev, mask);
258 return pci_set_dma_mask(pdev, old_mask);
264 static void netxen_check_options(struct netxen_adapter *adapter)
266 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
267 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
268 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
269 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
271 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
272 adapter->msix_supported = !!use_msi_x;
274 adapter->msix_supported = 0;
276 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
277 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
278 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
284 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
288 if (first_boot == 0x55555555) {
289 /* This is the first boot after power up */
290 adapter->pci_write_normalize(adapter,
291 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
293 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
296 /* PCI bus master workaround */
297 adapter->hw_read_wx(adapter,
298 NETXEN_PCIE_REG(0x4), &first_boot, 4);
299 if (!(first_boot & 0x4)) {
301 adapter->hw_write_wx(adapter,
302 NETXEN_PCIE_REG(0x4), &first_boot, 4);
303 adapter->hw_read_wx(adapter,
304 NETXEN_PCIE_REG(0x4), &first_boot, 4);
307 /* This is the first boot after power up */
308 adapter->hw_read_wx(adapter,
309 NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4);
310 if (first_boot != 0x80000f) {
311 /* clear the register for future unloads/loads */
312 adapter->pci_write_normalize(adapter,
313 NETXEN_CAM_RAM(0x1fc), 0);
317 /* Start P2 boot loader */
318 val = adapter->pci_read_normalize(adapter,
319 NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
320 adapter->pci_write_normalize(adapter,
321 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
325 val = adapter->pci_read_normalize(adapter,
326 NETXEN_CAM_RAM(0x1fc));
328 if (++timeout > 5000)
331 } while (val == NETXEN_BDINFO_MAGIC);
336 static void netxen_set_port_mode(struct netxen_adapter *adapter)
340 val = adapter->ahw.board_type;
341 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
342 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
343 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
344 data = NETXEN_PORT_MODE_802_3_AP;
345 adapter->hw_write_wx(adapter,
346 NETXEN_PORT_MODE_ADDR, &data, 4);
347 } else if (port_mode == NETXEN_PORT_MODE_XG) {
348 data = NETXEN_PORT_MODE_XG;
349 adapter->hw_write_wx(adapter,
350 NETXEN_PORT_MODE_ADDR, &data, 4);
351 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
352 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
353 adapter->hw_write_wx(adapter,
354 NETXEN_PORT_MODE_ADDR, &data, 4);
355 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
356 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
357 adapter->hw_write_wx(adapter,
358 NETXEN_PORT_MODE_ADDR, &data, 4);
360 data = NETXEN_PORT_MODE_AUTO_NEG;
361 adapter->hw_write_wx(adapter,
362 NETXEN_PORT_MODE_ADDR, &data, 4);
365 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
366 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
367 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
368 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
369 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
371 adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
376 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
381 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
383 pci_read_config_dword(pdev, pos, &control);
385 control |= PCI_MSIX_FLAGS_ENABLE;
388 pci_write_config_dword(pdev, pos, control);
392 static void netxen_init_msix_entries(struct netxen_adapter *adapter)
396 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
397 adapter->msix_entries[i].entry = i;
401 netxen_read_mac_addr(struct netxen_adapter *adapter)
406 struct net_device *netdev = adapter->netdev;
407 struct pci_dev *pdev = adapter->pdev;
409 if (netxen_is_flash_supported(adapter) != 0)
412 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
413 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
416 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
420 p = (unsigned char *)&mac_addr;
421 for (i = 0; i < 6; i++)
422 netdev->dev_addr[i] = *(p + 5 - i);
424 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
426 /* set station address */
428 if (!is_valid_ether_addr(netdev->perm_addr))
429 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
431 adapter->macaddr_set(adapter, netdev->dev_addr);
436 static void netxen_set_multicast_list(struct net_device *dev)
438 struct netxen_adapter *adapter = netdev_priv(dev);
440 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
441 netxen_p3_nic_set_multi(dev);
443 netxen_p2_nic_set_multi(dev);
446 static const struct net_device_ops netxen_netdev_ops = {
447 .ndo_open = netxen_nic_open,
448 .ndo_stop = netxen_nic_close,
449 .ndo_start_xmit = netxen_nic_xmit_frame,
450 .ndo_get_stats = netxen_nic_get_stats,
451 .ndo_validate_addr = eth_validate_addr,
452 .ndo_set_multicast_list = netxen_set_multicast_list,
453 .ndo_set_mac_address = netxen_nic_set_mac,
454 .ndo_change_mtu = netxen_nic_change_mtu,
455 .ndo_tx_timeout = netxen_tx_timeout,
456 #ifdef CONFIG_NET_POLL_CONTROLLER
457 .ndo_poll_controller = netxen_nic_poll_controller,
462 netxen_setup_intr(struct netxen_adapter *adapter)
464 struct netxen_legacy_intr_set *legacy_intrp;
465 struct pci_dev *pdev = adapter->pdev;
467 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
468 adapter->intr_scheme = -1;
469 adapter->msi_mode = -1;
471 if (adapter->ahw.revision_id >= NX_P3_B0)
472 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
474 legacy_intrp = &legacy_intr[0];
475 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
476 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
477 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
478 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
480 netxen_set_msix_bit(pdev, 0);
482 if (adapter->msix_supported) {
484 netxen_init_msix_entries(adapter);
485 if (pci_enable_msix(pdev, adapter->msix_entries,
486 MSIX_ENTRIES_PER_ADAPTER))
489 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
490 netxen_set_msix_bit(pdev, 1);
491 dev_info(&pdev->dev, "using msi-x interrupts\n");
495 if (use_msi && !pci_enable_msi(pdev)) {
496 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
497 dev_info(&pdev->dev, "using msi interrupts\n");
499 dev_info(&pdev->dev, "using legacy interrupts\n");
500 adapter->msix_entries[0].vector = pdev->irq;
505 netxen_teardown_intr(struct netxen_adapter *adapter)
507 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
508 pci_disable_msix(adapter->pdev);
509 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
510 pci_disable_msi(adapter->pdev);
514 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
516 if (adapter->ahw.db_base != NULL)
517 iounmap(adapter->ahw.db_base);
518 if (adapter->ahw.pci_base0 != NULL)
519 iounmap(adapter->ahw.pci_base0);
520 if (adapter->ahw.pci_base1 != NULL)
521 iounmap(adapter->ahw.pci_base1);
522 if (adapter->ahw.pci_base2 != NULL)
523 iounmap(adapter->ahw.pci_base2);
527 netxen_setup_pci_map(struct netxen_adapter *adapter)
529 void __iomem *mem_ptr0 = NULL;
530 void __iomem *mem_ptr1 = NULL;
531 void __iomem *mem_ptr2 = NULL;
532 void __iomem *db_ptr = NULL;
534 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
536 struct pci_dev *pdev = adapter->pdev;
537 int pci_func = adapter->ahw.pci_func;
542 * Set the CRB window to invalid. If any register in window 0 is
543 * accessed it should set the window to 0 and then reset it to 1.
545 adapter->curr_window = 255;
546 adapter->ahw.qdr_sn_window = -1;
547 adapter->ahw.ddr_mn_window = -1;
549 /* remap phys address */
550 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
551 mem_len = pci_resource_len(pdev, 0);
554 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
555 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
556 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
557 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
558 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
559 adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
560 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
561 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
562 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
564 /* 128 Meg of memory */
565 if (mem_len == NETXEN_PCI_128MB_SIZE) {
566 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
567 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
568 SECOND_PAGE_GROUP_SIZE);
569 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
570 THIRD_PAGE_GROUP_SIZE);
571 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
572 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
573 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
574 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
575 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
576 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
577 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
578 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
579 adapter->pci_write_immediate =
580 netxen_nic_pci_write_immediate_2M;
581 adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
582 adapter->pci_write_normalize =
583 netxen_nic_pci_write_normalize_2M;
584 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
585 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
586 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
588 mem_ptr0 = pci_ioremap_bar(pdev, 0);
589 if (mem_ptr0 == NULL) {
590 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
595 adapter->ahw.ddr_mn_window = 0;
596 adapter->ahw.qdr_sn_window = 0;
598 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
600 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
602 adapter->ahw.ms_win_crb += (pci_func * 0x20);
604 adapter->ahw.ms_win_crb +=
605 0xA0 + ((pci_func - 4) * 0x10);
610 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
612 adapter->ahw.pci_base0 = mem_ptr0;
613 adapter->ahw.pci_len0 = pci_len0;
614 adapter->ahw.pci_base1 = mem_ptr1;
615 adapter->ahw.pci_base2 = mem_ptr2;
617 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
620 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
621 db_len = pci_resource_len(pdev, 4);
624 printk(KERN_ERR "%s: doorbell is disabled\n",
625 netxen_nic_driver_name);
630 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
632 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
633 netxen_nic_driver_name);
639 adapter->ahw.db_base = db_ptr;
640 adapter->ahw.db_len = db_len;
644 netxen_cleanup_pci_map(adapter);
649 netxen_start_firmware(struct netxen_adapter *adapter)
651 int val, err, first_boot;
652 struct pci_dev *pdev = adapter->pdev;
654 int first_driver = 0;
655 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
656 if (adapter->ahw.pci_func == 0)
659 if (adapter->portnum == 0)
666 first_boot = adapter->pci_read_normalize(adapter,
667 NETXEN_CAM_RAM(0x1fc));
669 err = netxen_check_hw_init(adapter, first_boot);
671 dev_err(&pdev->dev, "error in init HW init sequence\n");
675 if (first_boot != 0x55555555) {
676 adapter->pci_write_normalize(adapter,
677 CRB_CMDPEG_STATE, 0);
678 netxen_pinit_from_rom(adapter, 0);
682 netxen_nic_reg_write(adapter, CRB_DMA_SHIFT, 0x55555555);
683 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
684 netxen_set_port_mode(adapter);
686 netxen_load_firmware(adapter);
688 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
690 /* Initialize multicast addr pool owners */
692 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
694 netxen_crb_writelit_adapter(adapter,
695 NETXEN_MAC_ADDR_CNTL_REG, val);
699 err = netxen_initialize_adapter_offload(adapter);
704 * Tell the hardware our version number.
706 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
707 | ((_NETXEN_NIC_LINUX_MINOR << 8))
708 | (_NETXEN_NIC_LINUX_SUBVERSION);
709 adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, val);
711 /* Handshake with the card before we register the devices. */
712 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
714 netxen_free_adapter_offload(adapter);
722 netxen_nic_request_irq(struct netxen_adapter *adapter)
724 irq_handler_t handler;
725 struct nx_host_sds_ring *sds_ring;
728 unsigned long flags = IRQF_SAMPLE_RANDOM;
729 struct net_device *netdev = adapter->netdev;
730 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
732 if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
733 (adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
734 printk(KERN_ERR "%s: Firmware interrupt scheme is "
735 "incompatible with driver\n",
737 adapter->driver_mismatch = 1;
741 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
742 handler = netxen_msix_intr;
743 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
744 handler = netxen_msi_intr;
746 flags |= IRQF_SHARED;
747 handler = netxen_intr;
749 adapter->irq = netdev->irq;
751 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
752 sds_ring = &recv_ctx->sds_rings[ring];
753 sprintf(sds_ring->name, "%16s[%d]", netdev->name, ring);
754 err = request_irq(sds_ring->irq, handler,
755 flags, sds_ring->name, sds_ring);
764 netxen_nic_free_irq(struct netxen_adapter *adapter)
767 struct nx_host_sds_ring *sds_ring;
769 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
771 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
772 sds_ring = &recv_ctx->sds_rings[ring];
773 free_irq(sds_ring->irq, sds_ring);
778 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
782 err = adapter->init_port(adapter, adapter->physical_port);
784 printk(KERN_ERR "%s: Failed to initialize port %d\n",
785 netxen_nic_driver_name, adapter->portnum);
788 adapter->macaddr_set(adapter, netdev->dev_addr);
790 netxen_nic_set_link_parameters(adapter);
792 netxen_set_multicast_list(netdev);
793 if (adapter->set_mtu)
794 adapter->set_mtu(adapter, netdev->mtu);
796 adapter->ahw.linkup = 0;
797 mod_timer(&adapter->watchdog_timer, jiffies);
799 netxen_napi_enable(adapter);
801 if (adapter->max_sds_rings > 1)
802 netxen_config_rss(adapter, 1);
808 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
810 netif_carrier_off(netdev);
811 netif_stop_queue(netdev);
812 netxen_napi_disable(adapter);
814 if (adapter->stop_port)
815 adapter->stop_port(adapter);
817 netxen_release_tx_buffers(adapter);
819 FLUSH_SCHEDULED_WORK();
820 del_timer_sync(&adapter->watchdog_timer);
825 netxen_nic_attach(struct netxen_adapter *adapter)
827 struct net_device *netdev = adapter->netdev;
828 struct pci_dev *pdev = adapter->pdev;
830 struct nx_host_rds_ring *rds_ring;
832 err = netxen_init_firmware(adapter);
834 printk(KERN_ERR "Failed to init firmware\n");
838 if (adapter->fw_major < 4)
839 adapter->max_rds_rings = 3;
841 adapter->max_rds_rings = 2;
843 err = netxen_alloc_sw_resources(adapter);
845 printk(KERN_ERR "%s: Error in setting sw resources\n",
850 netxen_nic_clear_stats(adapter);
852 err = netxen_alloc_hw_resources(adapter);
854 printk(KERN_ERR "%s: Error in setting hw resources\n",
856 goto err_out_free_sw;
859 if (adapter->fw_major < 4) {
860 adapter->crb_addr_cmd_producer =
861 crb_cmd_producer[adapter->portnum];
862 adapter->crb_addr_cmd_consumer =
863 crb_cmd_consumer[adapter->portnum];
865 netxen_nic_update_cmd_producer(adapter, 0);
866 netxen_nic_update_cmd_consumer(adapter, 0);
869 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
870 rds_ring = &adapter->recv_ctx.rds_rings[ring];
871 netxen_post_rx_buffers(adapter, ring, rds_ring);
874 err = netxen_nic_request_irq(adapter);
876 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
878 goto err_out_free_rxbuf;
881 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
885 netxen_release_rx_buffers(adapter);
886 netxen_free_hw_resources(adapter);
888 netxen_free_sw_resources(adapter);
893 netxen_nic_detach(struct netxen_adapter *adapter)
895 netxen_nic_free_irq(adapter);
897 netxen_release_rx_buffers(adapter);
898 netxen_free_hw_resources(adapter);
899 netxen_free_sw_resources(adapter);
905 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
907 struct net_device *netdev = NULL;
908 struct netxen_adapter *adapter = NULL;
910 int pci_func_id = PCI_FUNC(pdev->devfn);
913 if (pci_func_id == 0)
914 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
916 if (pdev->class != 0x020000) {
917 printk(KERN_DEBUG "NetXen function %d, class %x will not "
918 "be enabled.\n",pci_func_id, pdev->class);
922 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
923 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
924 "will not be enabled.\n",
929 if ((err = pci_enable_device(pdev)))
932 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
934 goto err_out_disable_pdev;
937 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
938 goto err_out_disable_pdev;
940 pci_set_master(pdev);
942 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
944 printk(KERN_ERR"%s: Failed to allocate memory for the "
945 "device block.Check system memory resource"
946 " usage.\n", netxen_nic_driver_name);
947 goto err_out_free_res;
950 SET_NETDEV_DEV(netdev, &pdev->dev);
952 adapter = netdev_priv(netdev);
953 adapter->netdev = netdev;
954 adapter->pdev = pdev;
955 adapter->ahw.pci_func = pci_func_id;
957 revision_id = pdev->revision;
958 adapter->ahw.revision_id = revision_id;
960 err = nx_set_dma_mask(adapter, revision_id);
962 goto err_out_free_netdev;
964 rwlock_init(&adapter->adapter_lock);
965 spin_lock_init(&adapter->tx_clean_lock);
967 err = netxen_setup_pci_map(adapter);
969 goto err_out_free_netdev;
971 /* This will be reset for mezz cards */
972 adapter->portnum = pci_func_id;
973 adapter->rx_csum = 1;
974 adapter->mc_enabled = 0;
975 if (NX_IS_REVISION_P3(revision_id))
976 adapter->max_mc_count = 38;
978 adapter->max_mc_count = 16;
980 netdev->netdev_ops = &netxen_netdev_ops;
981 netdev->watchdog_timeo = 2*HZ;
983 netxen_nic_change_mtu(netdev, netdev->mtu);
985 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
987 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
988 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
990 if (NX_IS_REVISION_P3(revision_id)) {
991 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
992 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
995 if (adapter->pci_using_dac) {
996 netdev->features |= NETIF_F_HIGHDMA;
997 netdev->vlan_features |= NETIF_F_HIGHDMA;
1000 if (netxen_nic_get_board_info(adapter) != 0) {
1001 printk("%s: Error getting board config info.\n",
1002 netxen_nic_driver_name);
1004 goto err_out_iounmap;
1007 netxen_initialize_adapter_ops(adapter);
1009 /* Mezz cards have PCI function 0,2,3 enabled */
1010 switch (adapter->ahw.board_type) {
1011 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1012 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1013 if (pci_func_id >= 2)
1014 adapter->portnum = pci_func_id - 2;
1020 err = netxen_start_firmware(adapter);
1022 goto err_out_iounmap;
1024 nx_update_dma_mask(adapter);
1026 netxen_nic_get_firmware_info(adapter);
1029 * See if the firmware gave us a virtual-physical port mapping.
1031 adapter->physical_port = adapter->portnum;
1032 if (adapter->fw_major < 4) {
1033 i = adapter->pci_read_normalize(adapter,
1034 CRB_V2P(adapter->portnum));
1035 if (i != 0x55555555)
1036 adapter->physical_port = i;
1039 netxen_check_options(adapter);
1041 netxen_setup_intr(adapter);
1043 netdev->irq = adapter->msix_entries[0].vector;
1045 netxen_napi_add(adapter, netdev);
1047 err = netxen_receive_peg_ready(adapter);
1049 goto err_out_disable_msi;
1051 init_timer(&adapter->watchdog_timer);
1052 adapter->watchdog_timer.function = &netxen_watchdog;
1053 adapter->watchdog_timer.data = (unsigned long)adapter;
1054 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1055 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1057 err = netxen_read_mac_addr(adapter);
1059 dev_warn(&pdev->dev, "failed to read mac addr\n");
1061 netif_carrier_off(netdev);
1062 netif_stop_queue(netdev);
1064 if ((err = register_netdev(netdev))) {
1065 printk(KERN_ERR "%s: register_netdev failed port #%d"
1066 " aborting\n", netxen_nic_driver_name,
1069 goto err_out_disable_msi;
1072 pci_set_drvdata(pdev, adapter);
1074 switch (adapter->ahw.port_type) {
1075 case NETXEN_NIC_GBE:
1076 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1077 adapter->netdev->name);
1079 case NETXEN_NIC_XGBE:
1080 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1081 adapter->netdev->name);
1087 err_out_disable_msi:
1088 netxen_teardown_intr(adapter);
1090 netxen_free_adapter_offload(adapter);
1093 netxen_cleanup_pci_map(adapter);
1095 err_out_free_netdev:
1096 free_netdev(netdev);
1099 pci_release_regions(pdev);
1101 err_out_disable_pdev:
1102 pci_set_drvdata(pdev, NULL);
1103 pci_disable_device(pdev);
1107 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1109 struct netxen_adapter *adapter;
1110 struct net_device *netdev;
1112 adapter = pci_get_drvdata(pdev);
1113 if (adapter == NULL)
1116 netdev = adapter->netdev;
1118 unregister_netdev(netdev);
1120 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1121 netxen_nic_detach(adapter);
1123 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1124 netxen_p3_free_mac_list(adapter);
1127 if (adapter->portnum == 0)
1128 netxen_free_adapter_offload(adapter);
1130 netxen_teardown_intr(adapter);
1132 netxen_cleanup_pci_map(adapter);
1134 pci_release_regions(pdev);
1135 pci_disable_device(pdev);
1136 pci_set_drvdata(pdev, NULL);
1138 free_netdev(netdev);
1142 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1145 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1146 struct net_device *netdev = adapter->netdev;
1148 netif_device_detach(netdev);
1150 if (netif_running(netdev))
1151 netxen_nic_down(adapter, netdev);
1153 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1154 netxen_nic_detach(adapter);
1156 pci_save_state(pdev);
1158 if (netxen_nic_wol_supported(adapter)) {
1159 pci_enable_wake(pdev, PCI_D3cold, 1);
1160 pci_enable_wake(pdev, PCI_D3hot, 1);
1163 pci_disable_device(pdev);
1164 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1170 netxen_nic_resume(struct pci_dev *pdev)
1172 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1173 struct net_device *netdev = adapter->netdev;
1176 pci_set_power_state(pdev, PCI_D0);
1177 pci_restore_state(pdev);
1179 err = pci_enable_device(pdev);
1183 adapter->curr_window = 255;
1185 err = netxen_start_firmware(adapter);
1187 dev_err(&pdev->dev, "failed to start firmware\n");
1191 if (netif_running(netdev)) {
1192 err = netxen_nic_attach(adapter);
1196 err = netxen_nic_up(adapter, netdev);
1200 netif_device_attach(netdev);
1206 static int netxen_nic_open(struct net_device *netdev)
1208 struct netxen_adapter *adapter = netdev_priv(netdev);
1211 if (adapter->driver_mismatch)
1214 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1215 err = netxen_nic_attach(adapter);
1220 err = netxen_nic_up(adapter, netdev);
1224 netif_start_queue(netdev);
1229 netxen_nic_detach(adapter);
1234 * netxen_nic_close - Disables a network interface entry point
1236 static int netxen_nic_close(struct net_device *netdev)
1238 struct netxen_adapter *adapter = netdev_priv(netdev);
1240 netxen_nic_down(adapter, netdev);
1244 static bool netxen_tso_check(struct net_device *netdev,
1245 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1248 u8 opcode = TX_ETHER_PKT;
1249 __be16 protocol = skb->protocol;
1252 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1253 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1254 protocol = vh->h_vlan_encapsulated_proto;
1255 flags = FLAGS_VLAN_TAGGED;
1258 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1259 skb_shinfo(skb)->gso_size > 0) {
1261 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1262 desc->total_hdr_length =
1263 skb_transport_offset(skb) + tcp_hdrlen(skb);
1265 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1266 TX_TCP_LSO6 : TX_TCP_LSO;
1269 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1272 if (protocol == cpu_to_be16(ETH_P_IP)) {
1273 l4proto = ip_hdr(skb)->protocol;
1275 if (l4proto == IPPROTO_TCP)
1276 opcode = TX_TCP_PKT;
1277 else if(l4proto == IPPROTO_UDP)
1278 opcode = TX_UDP_PKT;
1279 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1280 l4proto = ipv6_hdr(skb)->nexthdr;
1282 if (l4proto == IPPROTO_TCP)
1283 opcode = TX_TCPV6_PKT;
1284 else if(l4proto == IPPROTO_UDP)
1285 opcode = TX_UDPV6_PKT;
1288 desc->tcp_hdr_offset = skb_transport_offset(skb);
1289 desc->ip_hdr_offset = skb_network_offset(skb);
1290 netxen_set_tx_flags_opcode(desc, flags, opcode);
1295 netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1296 struct netxen_cmd_buffer *pbuf, int last)
1299 struct netxen_skb_frag *buffrag;
1301 buffrag = &pbuf->frag_array[0];
1302 pci_unmap_single(pdev, buffrag->dma,
1303 buffrag->length, PCI_DMA_TODEVICE);
1305 for (k = 1; k < last; k++) {
1306 buffrag = &pbuf->frag_array[k];
1307 pci_unmap_page(pdev, buffrag->dma,
1308 buffrag->length, PCI_DMA_TODEVICE);
1313 netxen_clear_cmddesc(u64 *desc)
1316 for (i = 0; i < 8; i++)
1321 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1323 struct netxen_adapter *adapter = netdev_priv(netdev);
1324 struct netxen_hardware_context *hw = &adapter->ahw;
1325 unsigned int first_seg_len = skb->len - skb->data_len;
1326 struct netxen_cmd_buffer *pbuf;
1327 struct netxen_skb_frag *buffrag;
1328 struct cmd_desc_type0 *hwdesc;
1329 struct pci_dev *pdev = adapter->pdev;
1330 dma_addr_t temp_dma;
1333 u32 producer, consumer;
1334 int frag_count, no_of_desc;
1335 u32 num_txd = adapter->num_txd;
1336 bool is_tso = false;
1338 frag_count = skb_shinfo(skb)->nr_frags + 1;
1340 /* There 4 fragments per descriptor */
1341 no_of_desc = (frag_count + 3) >> 2;
1343 producer = adapter->cmd_producer;
1345 consumer = adapter->last_cmd_consumer;
1346 if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
1347 netif_stop_queue(netdev);
1349 return NETDEV_TX_BUSY;
1352 /* Copy the descriptors into the hardware */
1353 hwdesc = &hw->cmd_desc_head[producer];
1354 netxen_clear_cmddesc((u64 *)hwdesc);
1355 /* Take skb->data itself */
1356 pbuf = &adapter->cmd_buf_arr[producer];
1358 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1361 pbuf->frag_count = frag_count;
1362 buffrag = &pbuf->frag_array[0];
1363 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
1365 if (pci_dma_mapping_error(pdev, temp_dma))
1368 buffrag->dma = temp_dma;
1369 buffrag->length = first_seg_len;
1370 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1371 netxen_set_tx_port(hwdesc, adapter->portnum);
1373 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
1374 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1376 for (i = 1, k = 1; i < frag_count; i++, k++) {
1377 struct skb_frag_struct *frag;
1379 unsigned long offset;
1381 /* move to next desc. if there is a need */
1382 if ((i & 0x3) == 0) {
1384 producer = get_next_index(producer, num_txd);
1385 hwdesc = &hw->cmd_desc_head[producer];
1386 netxen_clear_cmddesc((u64 *)hwdesc);
1387 pbuf = &adapter->cmd_buf_arr[producer];
1390 frag = &skb_shinfo(skb)->frags[i - 1];
1392 offset = frag->page_offset;
1395 temp_dma = pci_map_page(pdev, frag->page, offset,
1396 len, PCI_DMA_TODEVICE);
1397 if (pci_dma_mapping_error(pdev, temp_dma)) {
1398 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1403 buffrag->dma = temp_dma;
1404 buffrag->length = temp_len;
1406 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
1409 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1412 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1415 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1418 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1423 producer = get_next_index(producer, num_txd);
1425 /* For LSO, we need to copy the MAC/IP/TCP headers into
1426 * the descriptor ring
1429 int hdr_len, first_hdr_len, more_hdr;
1430 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1431 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1432 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1435 first_hdr_len = hdr_len;
1438 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1439 hwdesc = &hw->cmd_desc_head[producer];
1440 pbuf = &adapter->cmd_buf_arr[producer];
1443 /* copy the first 64 bytes */
1444 memcpy(((void *)hwdesc) + 2,
1445 (void *)(skb->data), first_hdr_len);
1446 producer = get_next_index(producer, num_txd);
1449 hwdesc = &hw->cmd_desc_head[producer];
1450 pbuf = &adapter->cmd_buf_arr[producer];
1452 /* copy the next 64 bytes - should be enough except
1453 * for pathological case
1455 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1459 producer = get_next_index(producer, num_txd);
1463 adapter->cmd_producer = producer;
1464 adapter->stats.txbytes += skb->len;
1466 netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
1468 adapter->stats.xmitcalled++;
1469 netdev->trans_start = jiffies;
1471 return NETDEV_TX_OK;
1474 adapter->stats.txdropped++;
1475 dev_kfree_skb_any(skb);
1476 return NETDEV_TX_OK;
1479 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1481 struct net_device *netdev = adapter->netdev;
1482 uint32_t temp, temp_state, temp_val;
1485 temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
1487 temp_state = nx_get_temp_state(temp);
1488 temp_val = nx_get_temp_val(temp);
1490 if (temp_state == NX_TEMP_PANIC) {
1492 "%s: Device temperature %d degrees C exceeds"
1493 " maximum allowed. Hardware has been shut down.\n",
1494 netxen_nic_driver_name, temp_val);
1496 netif_carrier_off(netdev);
1497 netif_stop_queue(netdev);
1499 } else if (temp_state == NX_TEMP_WARN) {
1500 if (adapter->temp == NX_TEMP_NORMAL) {
1502 "%s: Device temperature %d degrees C "
1503 "exceeds operating range."
1504 " Immediate action needed.\n",
1505 netxen_nic_driver_name, temp_val);
1508 if (adapter->temp == NX_TEMP_WARN) {
1510 "%s: Device temperature is now %d degrees C"
1511 " in normal range.\n", netxen_nic_driver_name,
1515 adapter->temp = temp_state;
1519 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1521 struct net_device *netdev = adapter->netdev;
1522 u32 val, port, linkup;
1524 port = adapter->physical_port;
1526 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1527 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3);
1528 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1529 linkup = (val == XG_LINK_UP_P3);
1531 val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
1532 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1533 linkup = (val >> port) & 1;
1535 val = (val >> port*8) & 0xff;
1536 linkup = (val == XG_LINK_UP);
1540 if (adapter->ahw.linkup && !linkup) {
1541 printk(KERN_INFO "%s: %s NIC Link is down\n",
1542 netxen_nic_driver_name, netdev->name);
1543 adapter->ahw.linkup = 0;
1544 if (netif_running(netdev)) {
1545 netif_carrier_off(netdev);
1546 netif_stop_queue(netdev);
1549 netxen_nic_set_link_parameters(adapter);
1550 } else if (!adapter->ahw.linkup && linkup) {
1551 printk(KERN_INFO "%s: %s NIC Link is up\n",
1552 netxen_nic_driver_name, netdev->name);
1553 adapter->ahw.linkup = 1;
1554 if (netif_running(netdev)) {
1555 netif_carrier_on(netdev);
1556 netif_wake_queue(netdev);
1559 netxen_nic_set_link_parameters(adapter);
1563 static void netxen_watchdog(unsigned long v)
1565 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1567 SCHEDULE_WORK(&adapter->watchdog_task);
1570 void netxen_watchdog_task(struct work_struct *work)
1572 struct netxen_adapter *adapter =
1573 container_of(work, struct netxen_adapter, watchdog_task);
1575 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1578 netxen_nic_handle_phy_intr(adapter);
1580 if (netif_running(adapter->netdev))
1581 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1584 static void netxen_tx_timeout(struct net_device *netdev)
1586 struct netxen_adapter *adapter = (struct netxen_adapter *)
1587 netdev_priv(netdev);
1588 SCHEDULE_WORK(&adapter->tx_timeout_task);
1591 static void netxen_tx_timeout_task(struct work_struct *work)
1593 struct netxen_adapter *adapter =
1594 container_of(work, struct netxen_adapter, tx_timeout_task);
1596 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1597 netxen_nic_driver_name, adapter->netdev->name);
1599 netxen_napi_disable(adapter);
1601 adapter->netdev->trans_start = jiffies;
1603 netxen_napi_enable(adapter);
1604 netif_wake_queue(adapter->netdev);
1608 * netxen_nic_get_stats - Get System Network Statistics
1609 * @netdev: network interface device structure
1611 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1613 struct netxen_adapter *adapter = netdev_priv(netdev);
1614 struct net_device_stats *stats = &adapter->net_stats;
1616 memset(stats, 0, sizeof(*stats));
1618 /* total packets received */
1619 stats->rx_packets = adapter->stats.no_rcv;
1620 /* total packets transmitted */
1621 stats->tx_packets = adapter->stats.xmitedframes +
1622 adapter->stats.xmitfinished;
1623 /* total bytes received */
1624 stats->rx_bytes = adapter->stats.rxbytes;
1625 /* total bytes transmitted */
1626 stats->tx_bytes = adapter->stats.txbytes;
1627 /* bad packets received */
1628 stats->rx_errors = adapter->stats.rcvdbadskb;
1629 /* packet transmit problems */
1630 stats->tx_errors = adapter->stats.nocmddescriptor;
1631 /* no space in linux buffers */
1632 stats->rx_dropped = adapter->stats.rxdropped;
1633 /* no space available in linux */
1634 stats->tx_dropped = adapter->stats.txdropped;
1639 static irqreturn_t netxen_intr(int irq, void *data)
1641 struct nx_host_sds_ring *sds_ring = data;
1642 struct netxen_adapter *adapter = sds_ring->adapter;
1645 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1647 if (!(status & adapter->legacy_intr.int_vec_bit))
1650 if (adapter->ahw.revision_id >= NX_P3_B1) {
1651 /* check interrupt state machine, to be sure */
1652 status = adapter->pci_read_immediate(adapter,
1654 if (!ISR_LEGACY_INT_TRIGGERED(status))
1658 unsigned long our_int = 0;
1660 our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
1662 /* not our interrupt */
1663 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1666 /* claim interrupt */
1667 adapter->pci_write_normalize(adapter,
1668 CRB_INT_VECTOR, (our_int & 0xffffffff));
1671 /* clear interrupt */
1672 if (adapter->fw_major < 4)
1673 netxen_nic_disable_int(sds_ring);
1675 adapter->pci_write_immediate(adapter,
1676 adapter->legacy_intr.tgt_status_reg,
1678 /* read twice to ensure write is flushed */
1679 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1680 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1682 napi_schedule(&sds_ring->napi);
1687 static irqreturn_t netxen_msi_intr(int irq, void *data)
1689 struct nx_host_sds_ring *sds_ring = data;
1690 struct netxen_adapter *adapter = sds_ring->adapter;
1692 /* clear interrupt */
1693 adapter->pci_write_immediate(adapter,
1694 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1696 napi_schedule(&sds_ring->napi);
1700 static irqreturn_t netxen_msix_intr(int irq, void *data)
1702 struct nx_host_sds_ring *sds_ring = data;
1704 napi_schedule(&sds_ring->napi);
1708 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1710 struct nx_host_sds_ring *sds_ring =
1711 container_of(napi, struct nx_host_sds_ring, napi);
1713 struct netxen_adapter *adapter = sds_ring->adapter;
1718 tx_complete = netxen_process_cmd_ring(adapter);
1720 work_done = netxen_process_rcv_ring(sds_ring, budget);
1722 if ((work_done < budget) && tx_complete) {
1723 napi_complete(&sds_ring->napi);
1724 netxen_nic_enable_int(sds_ring);
1730 #ifdef CONFIG_NET_POLL_CONTROLLER
1731 static void netxen_nic_poll_controller(struct net_device *netdev)
1733 struct netxen_adapter *adapter = netdev_priv(netdev);
1734 disable_irq(adapter->irq);
1735 netxen_intr(adapter->irq, adapter);
1736 enable_irq(adapter->irq);
1740 static struct pci_driver netxen_driver = {
1741 .name = netxen_nic_driver_name,
1742 .id_table = netxen_pci_tbl,
1743 .probe = netxen_nic_probe,
1744 .remove = __devexit_p(netxen_nic_remove),
1745 .suspend = netxen_nic_suspend,
1746 .resume = netxen_nic_resume
1749 /* Driver Registration on NetXen card */
1751 static int __init netxen_init_module(void)
1753 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1756 return pci_register_driver(&netxen_driver);
1759 module_init(netxen_init_module);
1761 static void __exit netxen_exit_module(void)
1763 pci_unregister_driver(&netxen_driver);
1764 destroy_workqueue(netxen_workq);
1767 module_exit(netxen_exit_module);