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/interrupt.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 struct nx_host_tx_ring *tx_ring, u32 producer)
112 adapter->hw_write_wx(adapter,
113 tx_ring->crb_cmd_producer, 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,
123 struct nx_host_tx_ring *tx_ring, u32 consumer)
125 adapter->hw_write_wx(adapter,
126 tx_ring->crb_cmd_consumer, 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->hw_write_wx(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->hw_write_wx(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_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
159 int size = sizeof(struct nx_host_sds_ring) * count;
161 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
163 return (recv_ctx->sds_rings == NULL);
167 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
169 if (recv_ctx->sds_rings != NULL)
170 kfree(recv_ctx->sds_rings);
174 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
177 struct nx_host_sds_ring *sds_ring;
178 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
180 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
181 adapter->max_sds_rings = (num_online_cpus() >= 4) ? 4 : 2;
183 adapter->max_sds_rings = 1;
185 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
188 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
189 sds_ring = &recv_ctx->sds_rings[ring];
190 netif_napi_add(netdev, &sds_ring->napi,
191 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
198 netxen_napi_enable(struct netxen_adapter *adapter)
201 struct nx_host_sds_ring *sds_ring;
202 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
204 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
205 sds_ring = &recv_ctx->sds_rings[ring];
206 napi_enable(&sds_ring->napi);
207 netxen_nic_enable_int(sds_ring);
212 netxen_napi_disable(struct netxen_adapter *adapter)
215 struct nx_host_sds_ring *sds_ring;
216 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
218 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
219 sds_ring = &recv_ctx->sds_rings[ring];
220 netxen_nic_disable_int(sds_ring);
221 napi_disable(&sds_ring->napi);
225 static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
227 struct pci_dev *pdev = adapter->pdev;
228 uint64_t mask, cmask;
230 adapter->pci_using_dac = 0;
232 mask = DMA_BIT_MASK(32);
234 * Consistent DMA mask is set to 32 bit because it cannot be set to
235 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
236 * come off this pool.
238 cmask = DMA_BIT_MASK(32);
241 if (revision_id >= NX_P3_B0)
242 mask = DMA_BIT_MASK(39);
243 else if (revision_id == NX_P2_C1)
244 mask = DMA_BIT_MASK(35);
246 if (pci_set_dma_mask(pdev, mask) == 0 &&
247 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
248 adapter->pci_using_dac = 1;
255 /* Update addressable range if firmware supports it */
257 nx_update_dma_mask(struct netxen_adapter *adapter)
259 int change, shift, err;
260 uint64_t mask, old_mask;
261 struct pci_dev *pdev = adapter->pdev;
265 shift = netxen_nic_reg_read(adapter, CRB_DMA_SHIFT);
269 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
271 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
275 old_mask = pdev->dma_mask;
276 mask = (1ULL<<(32+shift)) - 1;
278 err = pci_set_dma_mask(pdev, mask);
280 return pci_set_dma_mask(pdev, old_mask);
286 static void netxen_check_options(struct netxen_adapter *adapter)
288 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
289 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
290 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
291 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
293 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
294 adapter->msix_supported = !!use_msi_x;
296 adapter->msix_supported = 0;
298 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
299 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
300 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
306 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
310 if (first_boot == 0x55555555) {
311 /* This is the first boot after power up */
312 adapter->hw_write_wx(adapter,
313 NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
315 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
318 /* PCI bus master workaround */
319 first_boot = adapter->hw_read_wx(adapter, NETXEN_PCIE_REG(0x4));
320 if (!(first_boot & 0x4)) {
322 adapter->hw_write_wx(adapter,
323 NETXEN_PCIE_REG(0x4), first_boot);
324 first_boot = adapter->hw_read_wx(adapter,
325 NETXEN_PCIE_REG(0x4));
328 /* This is the first boot after power up */
329 first_boot = adapter->hw_read_wx(adapter,
330 NETXEN_ROMUSB_GLB_SW_RESET);
331 if (first_boot != 0x80000f) {
332 /* clear the register for future unloads/loads */
333 adapter->hw_write_wx(adapter,
334 NETXEN_CAM_RAM(0x1fc), 0);
338 /* Start P2 boot loader */
339 val = adapter->hw_read_wx(adapter,
340 NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
341 adapter->hw_write_wx(adapter,
342 NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
346 val = adapter->hw_read_wx(adapter,
347 NETXEN_CAM_RAM(0x1fc));
349 if (++timeout > 5000)
352 } while (val == NETXEN_BDINFO_MAGIC);
357 static void netxen_set_port_mode(struct netxen_adapter *adapter)
361 val = adapter->ahw.board_type;
362 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
363 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
364 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
365 data = NETXEN_PORT_MODE_802_3_AP;
366 adapter->hw_write_wx(adapter,
367 NETXEN_PORT_MODE_ADDR, data);
368 } else if (port_mode == NETXEN_PORT_MODE_XG) {
369 data = NETXEN_PORT_MODE_XG;
370 adapter->hw_write_wx(adapter,
371 NETXEN_PORT_MODE_ADDR, data);
372 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
373 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
374 adapter->hw_write_wx(adapter,
375 NETXEN_PORT_MODE_ADDR, data);
376 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
377 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
378 adapter->hw_write_wx(adapter,
379 NETXEN_PORT_MODE_ADDR, data);
381 data = NETXEN_PORT_MODE_AUTO_NEG;
382 adapter->hw_write_wx(adapter,
383 NETXEN_PORT_MODE_ADDR, data);
386 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
387 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
388 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
389 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
390 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
392 adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
397 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
402 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
404 pci_read_config_dword(pdev, pos, &control);
406 control |= PCI_MSIX_FLAGS_ENABLE;
409 pci_write_config_dword(pdev, pos, control);
413 static void netxen_init_msix_entries(struct netxen_adapter *adapter)
417 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
418 adapter->msix_entries[i].entry = i;
422 netxen_read_mac_addr(struct netxen_adapter *adapter)
427 struct net_device *netdev = adapter->netdev;
428 struct pci_dev *pdev = adapter->pdev;
430 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
431 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
434 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
438 p = (unsigned char *)&mac_addr;
439 for (i = 0; i < 6; i++)
440 netdev->dev_addr[i] = *(p + 5 - i);
442 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
444 /* set station address */
446 if (!is_valid_ether_addr(netdev->perm_addr))
447 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
449 adapter->macaddr_set(adapter, netdev->dev_addr);
454 static void netxen_set_multicast_list(struct net_device *dev)
456 struct netxen_adapter *adapter = netdev_priv(dev);
458 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
459 netxen_p3_nic_set_multi(dev);
461 netxen_p2_nic_set_multi(dev);
464 static const struct net_device_ops netxen_netdev_ops = {
465 .ndo_open = netxen_nic_open,
466 .ndo_stop = netxen_nic_close,
467 .ndo_start_xmit = netxen_nic_xmit_frame,
468 .ndo_get_stats = netxen_nic_get_stats,
469 .ndo_validate_addr = eth_validate_addr,
470 .ndo_set_multicast_list = netxen_set_multicast_list,
471 .ndo_set_mac_address = netxen_nic_set_mac,
472 .ndo_change_mtu = netxen_nic_change_mtu,
473 .ndo_tx_timeout = netxen_tx_timeout,
474 #ifdef CONFIG_NET_POLL_CONTROLLER
475 .ndo_poll_controller = netxen_nic_poll_controller,
480 netxen_setup_intr(struct netxen_adapter *adapter)
482 struct netxen_legacy_intr_set *legacy_intrp;
483 struct pci_dev *pdev = adapter->pdev;
485 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
487 if (adapter->ahw.revision_id >= NX_P3_B0)
488 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
490 legacy_intrp = &legacy_intr[0];
491 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
492 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
493 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
494 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
496 netxen_set_msix_bit(pdev, 0);
498 if (adapter->msix_supported) {
500 netxen_init_msix_entries(adapter);
501 if (pci_enable_msix(pdev, adapter->msix_entries,
502 MSIX_ENTRIES_PER_ADAPTER))
505 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
506 netxen_set_msix_bit(pdev, 1);
507 dev_info(&pdev->dev, "using msi-x interrupts\n");
511 if (use_msi && !pci_enable_msi(pdev)) {
512 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
513 dev_info(&pdev->dev, "using msi interrupts\n");
515 dev_info(&pdev->dev, "using legacy interrupts\n");
516 adapter->msix_entries[0].vector = pdev->irq;
521 netxen_teardown_intr(struct netxen_adapter *adapter)
523 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
524 pci_disable_msix(adapter->pdev);
525 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
526 pci_disable_msi(adapter->pdev);
530 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
532 if (adapter->ahw.db_base != NULL)
533 iounmap(adapter->ahw.db_base);
534 if (adapter->ahw.pci_base0 != NULL)
535 iounmap(adapter->ahw.pci_base0);
536 if (adapter->ahw.pci_base1 != NULL)
537 iounmap(adapter->ahw.pci_base1);
538 if (adapter->ahw.pci_base2 != NULL)
539 iounmap(adapter->ahw.pci_base2);
543 netxen_setup_pci_map(struct netxen_adapter *adapter)
545 void __iomem *mem_ptr0 = NULL;
546 void __iomem *mem_ptr1 = NULL;
547 void __iomem *mem_ptr2 = NULL;
548 void __iomem *db_ptr = NULL;
550 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
552 struct pci_dev *pdev = adapter->pdev;
553 int pci_func = adapter->ahw.pci_func;
558 * Set the CRB window to invalid. If any register in window 0 is
559 * accessed it should set the window to 0 and then reset it to 1.
561 adapter->curr_window = 255;
562 adapter->ahw.qdr_sn_window = -1;
563 adapter->ahw.ddr_mn_window = -1;
565 /* remap phys address */
566 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
567 mem_len = pci_resource_len(pdev, 0);
570 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
571 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
572 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
573 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
574 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
575 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
576 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
578 /* 128 Meg of memory */
579 if (mem_len == NETXEN_PCI_128MB_SIZE) {
580 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
581 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
582 SECOND_PAGE_GROUP_SIZE);
583 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
584 THIRD_PAGE_GROUP_SIZE);
585 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
586 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
587 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
588 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
589 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
590 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
591 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
592 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
593 adapter->pci_write_immediate =
594 netxen_nic_pci_write_immediate_2M;
595 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
596 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
597 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
599 mem_ptr0 = pci_ioremap_bar(pdev, 0);
600 if (mem_ptr0 == NULL) {
601 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
606 adapter->ahw.ddr_mn_window = 0;
607 adapter->ahw.qdr_sn_window = 0;
609 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
611 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
613 adapter->ahw.ms_win_crb += (pci_func * 0x20);
615 adapter->ahw.ms_win_crb +=
616 0xA0 + ((pci_func - 4) * 0x10);
621 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
623 adapter->ahw.pci_base0 = mem_ptr0;
624 adapter->ahw.pci_len0 = pci_len0;
625 adapter->ahw.pci_base1 = mem_ptr1;
626 adapter->ahw.pci_base2 = mem_ptr2;
628 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
631 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
632 db_len = pci_resource_len(pdev, 4);
635 printk(KERN_ERR "%s: doorbell is disabled\n",
636 netxen_nic_driver_name);
641 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
643 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
644 netxen_nic_driver_name);
650 adapter->ahw.db_base = db_ptr;
651 adapter->ahw.db_len = db_len;
655 netxen_cleanup_pci_map(adapter);
660 netxen_start_firmware(struct netxen_adapter *adapter)
662 int val, err, first_boot;
663 struct pci_dev *pdev = adapter->pdev;
665 int first_driver = 0;
666 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
667 if (adapter->ahw.pci_func == 0)
670 if (adapter->portnum == 0)
677 first_boot = adapter->hw_read_wx(adapter,
678 NETXEN_CAM_RAM(0x1fc));
680 err = netxen_check_hw_init(adapter, first_boot);
682 dev_err(&pdev->dev, "error in init HW init sequence\n");
686 if (first_boot != 0x55555555) {
687 adapter->hw_write_wx(adapter,
688 CRB_CMDPEG_STATE, 0);
689 netxen_pinit_from_rom(adapter, 0);
693 netxen_nic_reg_write(adapter, CRB_DMA_SHIFT, 0x55555555);
694 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
695 netxen_set_port_mode(adapter);
697 netxen_load_firmware(adapter);
699 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
701 /* Initialize multicast addr pool owners */
703 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
705 netxen_crb_writelit_adapter(adapter,
706 NETXEN_MAC_ADDR_CNTL_REG, val);
710 err = netxen_initialize_adapter_offload(adapter);
715 * Tell the hardware our version number.
717 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
718 | ((_NETXEN_NIC_LINUX_MINOR << 8))
719 | (_NETXEN_NIC_LINUX_SUBVERSION);
720 adapter->hw_write_wx(adapter, CRB_DRIVER_VERSION, val);
722 /* Handshake with the card before we register the devices. */
723 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
725 netxen_free_adapter_offload(adapter);
733 netxen_nic_request_irq(struct netxen_adapter *adapter)
735 irq_handler_t handler;
736 struct nx_host_sds_ring *sds_ring;
739 unsigned long flags = IRQF_SAMPLE_RANDOM;
740 struct net_device *netdev = adapter->netdev;
741 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
743 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
744 handler = netxen_msix_intr;
745 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
746 handler = netxen_msi_intr;
748 flags |= IRQF_SHARED;
749 handler = netxen_intr;
751 adapter->irq = netdev->irq;
753 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
754 sds_ring = &recv_ctx->sds_rings[ring];
755 sprintf(sds_ring->name, "%16s[%d]", netdev->name, ring);
756 err = request_irq(sds_ring->irq, handler,
757 flags, sds_ring->name, sds_ring);
766 netxen_nic_free_irq(struct netxen_adapter *adapter)
769 struct nx_host_sds_ring *sds_ring;
771 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
773 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
774 sds_ring = &recv_ctx->sds_rings[ring];
775 free_irq(sds_ring->irq, sds_ring);
780 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
784 err = adapter->init_port(adapter, adapter->physical_port);
786 printk(KERN_ERR "%s: Failed to initialize port %d\n",
787 netxen_nic_driver_name, adapter->portnum);
790 adapter->macaddr_set(adapter, netdev->dev_addr);
792 netxen_nic_set_link_parameters(adapter);
794 netxen_set_multicast_list(netdev);
795 if (adapter->set_mtu)
796 adapter->set_mtu(adapter, netdev->mtu);
798 adapter->ahw.linkup = 0;
799 mod_timer(&adapter->watchdog_timer, jiffies);
801 netxen_napi_enable(adapter);
803 if (adapter->max_sds_rings > 1)
804 netxen_config_rss(adapter, 1);
806 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
807 netxen_linkevent_request(adapter, 1);
813 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
815 netif_carrier_off(netdev);
816 netif_stop_queue(netdev);
817 netxen_napi_disable(adapter);
819 if (adapter->stop_port)
820 adapter->stop_port(adapter);
822 netxen_release_tx_buffers(adapter);
824 FLUSH_SCHEDULED_WORK();
825 del_timer_sync(&adapter->watchdog_timer);
830 netxen_nic_attach(struct netxen_adapter *adapter)
832 struct net_device *netdev = adapter->netdev;
833 struct pci_dev *pdev = adapter->pdev;
835 struct nx_host_rds_ring *rds_ring;
836 struct nx_host_tx_ring *tx_ring;
838 err = netxen_init_firmware(adapter);
840 printk(KERN_ERR "Failed to init firmware\n");
844 if (adapter->fw_major < 4)
845 adapter->max_rds_rings = 3;
847 adapter->max_rds_rings = 2;
849 err = netxen_alloc_sw_resources(adapter);
851 printk(KERN_ERR "%s: Error in setting sw resources\n",
856 netxen_nic_clear_stats(adapter);
858 err = netxen_alloc_hw_resources(adapter);
860 printk(KERN_ERR "%s: Error in setting hw resources\n",
862 goto err_out_free_sw;
865 if (adapter->fw_major < 4) {
866 tx_ring = &adapter->tx_ring;
867 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
868 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
870 netxen_nic_update_cmd_producer(adapter, tx_ring, 0);
871 netxen_nic_update_cmd_consumer(adapter, tx_ring, 0);
874 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
875 rds_ring = &adapter->recv_ctx.rds_rings[ring];
876 netxen_post_rx_buffers(adapter, ring, rds_ring);
879 err = netxen_nic_request_irq(adapter);
881 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
883 goto err_out_free_rxbuf;
886 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
890 netxen_release_rx_buffers(adapter);
891 netxen_free_hw_resources(adapter);
893 netxen_free_sw_resources(adapter);
898 netxen_nic_detach(struct netxen_adapter *adapter)
900 netxen_nic_free_irq(adapter);
902 netxen_release_rx_buffers(adapter);
903 netxen_free_hw_resources(adapter);
904 netxen_free_sw_resources(adapter);
910 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
912 struct net_device *netdev = NULL;
913 struct netxen_adapter *adapter = NULL;
915 int pci_func_id = PCI_FUNC(pdev->devfn);
918 if (pdev->class != 0x020000) {
919 printk(KERN_DEBUG "NetXen function %d, class %x will not "
920 "be enabled.\n",pci_func_id, pdev->class);
924 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
925 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
926 "will not be enabled.\n",
931 if ((err = pci_enable_device(pdev)))
934 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
936 goto err_out_disable_pdev;
939 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
940 goto err_out_disable_pdev;
942 pci_set_master(pdev);
944 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
946 printk(KERN_ERR"%s: Failed to allocate memory for the "
947 "device block.Check system memory resource"
948 " usage.\n", netxen_nic_driver_name);
949 goto err_out_free_res;
952 SET_NETDEV_DEV(netdev, &pdev->dev);
954 adapter = netdev_priv(netdev);
955 adapter->netdev = netdev;
956 adapter->pdev = pdev;
957 adapter->ahw.pci_func = pci_func_id;
959 revision_id = pdev->revision;
960 adapter->ahw.revision_id = revision_id;
962 err = nx_set_dma_mask(adapter, revision_id);
964 goto err_out_free_netdev;
966 rwlock_init(&adapter->adapter_lock);
967 spin_lock_init(&adapter->tx_clean_lock);
969 err = netxen_setup_pci_map(adapter);
971 goto err_out_free_netdev;
973 /* This will be reset for mezz cards */
974 adapter->portnum = pci_func_id;
975 adapter->rx_csum = 1;
976 adapter->mc_enabled = 0;
977 if (NX_IS_REVISION_P3(revision_id))
978 adapter->max_mc_count = 38;
980 adapter->max_mc_count = 16;
982 netdev->netdev_ops = &netxen_netdev_ops;
983 netdev->watchdog_timeo = 2*HZ;
985 netxen_nic_change_mtu(netdev, netdev->mtu);
987 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
989 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
990 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
992 if (NX_IS_REVISION_P3(revision_id)) {
993 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
994 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
997 if (adapter->pci_using_dac) {
998 netdev->features |= NETIF_F_HIGHDMA;
999 netdev->vlan_features |= NETIF_F_HIGHDMA;
1002 if (netxen_nic_get_board_info(adapter) != 0) {
1003 printk("%s: Error getting board config info.\n",
1004 netxen_nic_driver_name);
1006 goto err_out_iounmap;
1009 netxen_initialize_adapter_ops(adapter);
1011 /* Mezz cards have PCI function 0,2,3 enabled */
1012 switch (adapter->ahw.board_type) {
1013 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1014 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1015 if (pci_func_id >= 2)
1016 adapter->portnum = pci_func_id - 2;
1022 err = netxen_start_firmware(adapter);
1024 goto err_out_iounmap;
1026 nx_update_dma_mask(adapter);
1028 netxen_nic_get_firmware_info(adapter);
1031 * See if the firmware gave us a virtual-physical port mapping.
1033 adapter->physical_port = adapter->portnum;
1034 if (adapter->fw_major < 4) {
1035 i = adapter->hw_read_wx(adapter,
1036 CRB_V2P(adapter->portnum));
1037 if (i != 0x55555555)
1038 adapter->physical_port = i;
1041 netxen_check_options(adapter);
1043 netxen_setup_intr(adapter);
1045 netdev->irq = adapter->msix_entries[0].vector;
1047 if (netxen_napi_add(adapter, netdev))
1048 goto err_out_disable_msi;
1050 init_timer(&adapter->watchdog_timer);
1051 adapter->watchdog_timer.function = &netxen_watchdog;
1052 adapter->watchdog_timer.data = (unsigned long)adapter;
1053 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1054 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1056 err = netxen_read_mac_addr(adapter);
1058 dev_warn(&pdev->dev, "failed to read mac addr\n");
1060 netif_carrier_off(netdev);
1061 netif_stop_queue(netdev);
1063 if ((err = register_netdev(netdev))) {
1064 printk(KERN_ERR "%s: register_netdev failed port #%d"
1065 " aborting\n", netxen_nic_driver_name,
1068 goto err_out_disable_msi;
1071 pci_set_drvdata(pdev, adapter);
1073 switch (adapter->ahw.port_type) {
1074 case NETXEN_NIC_GBE:
1075 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1076 adapter->netdev->name);
1078 case NETXEN_NIC_XGBE:
1079 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1080 adapter->netdev->name);
1086 err_out_disable_msi:
1087 netxen_teardown_intr(adapter);
1089 netxen_free_adapter_offload(adapter);
1092 netxen_cleanup_pci_map(adapter);
1094 err_out_free_netdev:
1095 free_netdev(netdev);
1098 pci_release_regions(pdev);
1100 err_out_disable_pdev:
1101 pci_set_drvdata(pdev, NULL);
1102 pci_disable_device(pdev);
1106 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1108 struct netxen_adapter *adapter;
1109 struct net_device *netdev;
1111 adapter = pci_get_drvdata(pdev);
1112 if (adapter == NULL)
1115 netdev = adapter->netdev;
1117 unregister_netdev(netdev);
1119 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1120 netxen_nic_detach(adapter);
1122 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1123 netxen_p3_free_mac_list(adapter);
1126 if (adapter->portnum == 0)
1127 netxen_free_adapter_offload(adapter);
1129 netxen_teardown_intr(adapter);
1130 netxen_free_sds_rings(&adapter->recv_ctx);
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 nx_host_tx_ring *tx_ring = &adapter->tx_ring;
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 = tx_ring->num_desc;
1336 bool is_tso = false;
1338 frag_count = skb_shinfo(skb)->nr_frags + 1;
1340 /* 4 fragments per cmd des */
1341 no_of_desc = (frag_count + 3) >> 2;
1343 producer = tx_ring->producer;
1345 consumer = tx_ring->sw_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 hwdesc = &tx_ring->desc_head[producer];
1353 netxen_clear_cmddesc((u64 *)hwdesc);
1354 pbuf = &tx_ring->cmd_buf_arr[producer];
1356 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1359 pbuf->frag_count = frag_count;
1360 buffrag = &pbuf->frag_array[0];
1361 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
1363 if (pci_dma_mapping_error(pdev, temp_dma))
1366 buffrag->dma = temp_dma;
1367 buffrag->length = first_seg_len;
1368 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1369 netxen_set_tx_port(hwdesc, adapter->portnum);
1371 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
1372 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1374 for (i = 1, k = 1; i < frag_count; i++, k++) {
1375 struct skb_frag_struct *frag;
1377 unsigned long offset;
1379 /* move to next desc. if there is a need */
1380 if ((i & 0x3) == 0) {
1382 producer = get_next_index(producer, num_txd);
1383 hwdesc = &tx_ring->desc_head[producer];
1384 netxen_clear_cmddesc((u64 *)hwdesc);
1385 pbuf = &tx_ring->cmd_buf_arr[producer];
1388 frag = &skb_shinfo(skb)->frags[i - 1];
1390 offset = frag->page_offset;
1393 temp_dma = pci_map_page(pdev, frag->page, offset,
1394 len, PCI_DMA_TODEVICE);
1395 if (pci_dma_mapping_error(pdev, temp_dma)) {
1396 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1401 buffrag->dma = temp_dma;
1402 buffrag->length = temp_len;
1404 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
1407 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1410 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1413 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1416 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1421 producer = get_next_index(producer, num_txd);
1423 /* For LSO, we need to copy the MAC/IP/TCP headers into
1424 * the descriptor ring
1427 int hdr_len, first_hdr_len, more_hdr;
1428 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1429 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1430 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1433 first_hdr_len = hdr_len;
1436 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1437 hwdesc = &tx_ring->desc_head[producer];
1438 pbuf = &tx_ring->cmd_buf_arr[producer];
1441 /* copy the first 64 bytes */
1442 memcpy(((void *)hwdesc) + 2,
1443 (void *)(skb->data), first_hdr_len);
1444 producer = get_next_index(producer, num_txd);
1447 hwdesc = &tx_ring->desc_head[producer];
1448 pbuf = &tx_ring->cmd_buf_arr[producer];
1450 /* copy the next 64 bytes - should be enough except
1451 * for pathological case
1453 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1457 producer = get_next_index(producer, num_txd);
1461 tx_ring->producer = producer;
1462 adapter->stats.txbytes += skb->len;
1464 netxen_nic_update_cmd_producer(adapter, tx_ring, producer);
1466 adapter->stats.xmitcalled++;
1467 netdev->trans_start = jiffies;
1469 return NETDEV_TX_OK;
1472 adapter->stats.txdropped++;
1473 dev_kfree_skb_any(skb);
1474 return NETDEV_TX_OK;
1477 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1479 struct net_device *netdev = adapter->netdev;
1480 uint32_t temp, temp_state, temp_val;
1483 temp = adapter->hw_read_wx(adapter, CRB_TEMP_STATE);
1485 temp_state = nx_get_temp_state(temp);
1486 temp_val = nx_get_temp_val(temp);
1488 if (temp_state == NX_TEMP_PANIC) {
1490 "%s: Device temperature %d degrees C exceeds"
1491 " maximum allowed. Hardware has been shut down.\n",
1492 netxen_nic_driver_name, temp_val);
1494 netif_carrier_off(netdev);
1495 netif_stop_queue(netdev);
1497 } else if (temp_state == NX_TEMP_WARN) {
1498 if (adapter->temp == NX_TEMP_NORMAL) {
1500 "%s: Device temperature %d degrees C "
1501 "exceeds operating range."
1502 " Immediate action needed.\n",
1503 netxen_nic_driver_name, temp_val);
1506 if (adapter->temp == NX_TEMP_WARN) {
1508 "%s: Device temperature is now %d degrees C"
1509 " in normal range.\n", netxen_nic_driver_name,
1513 adapter->temp = temp_state;
1517 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1519 struct net_device *netdev = adapter->netdev;
1521 if (adapter->ahw.linkup && !linkup) {
1522 printk(KERN_INFO "%s: %s NIC Link is down\n",
1523 netxen_nic_driver_name, netdev->name);
1524 adapter->ahw.linkup = 0;
1525 if (netif_running(netdev)) {
1526 netif_carrier_off(netdev);
1527 netif_stop_queue(netdev);
1530 if (!adapter->has_link_events)
1531 netxen_nic_set_link_parameters(adapter);
1533 } else if (!adapter->ahw.linkup && linkup) {
1534 printk(KERN_INFO "%s: %s NIC Link is up\n",
1535 netxen_nic_driver_name, netdev->name);
1536 adapter->ahw.linkup = 1;
1537 if (netif_running(netdev)) {
1538 netif_carrier_on(netdev);
1539 netif_wake_queue(netdev);
1542 if (!adapter->has_link_events)
1543 netxen_nic_set_link_parameters(adapter);
1547 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1549 u32 val, port, linkup;
1551 port = adapter->physical_port;
1553 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1554 val = adapter->hw_read_wx(adapter, CRB_XG_STATE_P3);
1555 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1556 linkup = (val == XG_LINK_UP_P3);
1558 val = adapter->hw_read_wx(adapter, CRB_XG_STATE);
1559 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1560 linkup = (val >> port) & 1;
1562 val = (val >> port*8) & 0xff;
1563 linkup = (val == XG_LINK_UP);
1567 netxen_advert_link_change(adapter, linkup);
1570 static void netxen_watchdog(unsigned long v)
1572 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1574 SCHEDULE_WORK(&adapter->watchdog_task);
1577 void netxen_watchdog_task(struct work_struct *work)
1579 struct netxen_adapter *adapter =
1580 container_of(work, struct netxen_adapter, watchdog_task);
1582 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1585 if (!adapter->has_link_events)
1586 netxen_nic_handle_phy_intr(adapter);
1588 if (netif_running(adapter->netdev))
1589 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1592 static void netxen_tx_timeout(struct net_device *netdev)
1594 struct netxen_adapter *adapter = (struct netxen_adapter *)
1595 netdev_priv(netdev);
1596 SCHEDULE_WORK(&adapter->tx_timeout_task);
1599 static void netxen_tx_timeout_task(struct work_struct *work)
1601 struct netxen_adapter *adapter =
1602 container_of(work, struct netxen_adapter, tx_timeout_task);
1604 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1605 netxen_nic_driver_name, adapter->netdev->name);
1607 netxen_napi_disable(adapter);
1609 adapter->netdev->trans_start = jiffies;
1611 netxen_napi_enable(adapter);
1612 netif_wake_queue(adapter->netdev);
1615 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1617 struct netxen_adapter *adapter = netdev_priv(netdev);
1618 struct net_device_stats *stats = &adapter->net_stats;
1620 memset(stats, 0, sizeof(*stats));
1622 stats->rx_packets = adapter->stats.no_rcv;
1623 stats->tx_packets = adapter->stats.xmitfinished;
1624 stats->rx_bytes = adapter->stats.rxbytes;
1625 stats->tx_bytes = adapter->stats.txbytes;
1626 stats->rx_dropped = adapter->stats.rxdropped;
1627 stats->tx_dropped = adapter->stats.txdropped;
1632 static irqreturn_t netxen_intr(int irq, void *data)
1634 struct nx_host_sds_ring *sds_ring = data;
1635 struct netxen_adapter *adapter = sds_ring->adapter;
1638 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1640 if (!(status & adapter->legacy_intr.int_vec_bit))
1643 if (adapter->ahw.revision_id >= NX_P3_B1) {
1644 /* check interrupt state machine, to be sure */
1645 status = adapter->pci_read_immediate(adapter,
1647 if (!ISR_LEGACY_INT_TRIGGERED(status))
1651 unsigned long our_int = 0;
1653 our_int = adapter->hw_read_wx(adapter, CRB_INT_VECTOR);
1655 /* not our interrupt */
1656 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1659 /* claim interrupt */
1660 adapter->hw_write_wx(adapter,
1661 CRB_INT_VECTOR, (our_int & 0xffffffff));
1664 /* clear interrupt */
1665 if (adapter->fw_major < 4)
1666 netxen_nic_disable_int(sds_ring);
1668 adapter->pci_write_immediate(adapter,
1669 adapter->legacy_intr.tgt_status_reg,
1671 /* read twice to ensure write is flushed */
1672 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1673 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1675 napi_schedule(&sds_ring->napi);
1680 static irqreturn_t netxen_msi_intr(int irq, void *data)
1682 struct nx_host_sds_ring *sds_ring = data;
1683 struct netxen_adapter *adapter = sds_ring->adapter;
1685 /* clear interrupt */
1686 adapter->pci_write_immediate(adapter,
1687 msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
1689 napi_schedule(&sds_ring->napi);
1693 static irqreturn_t netxen_msix_intr(int irq, void *data)
1695 struct nx_host_sds_ring *sds_ring = data;
1697 napi_schedule(&sds_ring->napi);
1701 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1703 struct nx_host_sds_ring *sds_ring =
1704 container_of(napi, struct nx_host_sds_ring, napi);
1706 struct netxen_adapter *adapter = sds_ring->adapter;
1711 tx_complete = netxen_process_cmd_ring(adapter);
1713 work_done = netxen_process_rcv_ring(sds_ring, budget);
1715 if ((work_done < budget) && tx_complete) {
1716 napi_complete(&sds_ring->napi);
1717 netxen_nic_enable_int(sds_ring);
1723 #ifdef CONFIG_NET_POLL_CONTROLLER
1724 static void netxen_nic_poll_controller(struct net_device *netdev)
1726 struct netxen_adapter *adapter = netdev_priv(netdev);
1727 disable_irq(adapter->irq);
1728 netxen_intr(adapter->irq, adapter);
1729 enable_irq(adapter->irq);
1733 static struct pci_driver netxen_driver = {
1734 .name = netxen_nic_driver_name,
1735 .id_table = netxen_pci_tbl,
1736 .probe = netxen_nic_probe,
1737 .remove = __devexit_p(netxen_nic_remove),
1738 .suspend = netxen_nic_suspend,
1739 .resume = netxen_nic_resume
1742 /* Driver Registration on NetXen card */
1744 static int __init netxen_init_module(void)
1746 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1748 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1751 return pci_register_driver(&netxen_driver);
1754 module_init(netxen_init_module);
1756 static void __exit netxen_exit_module(void)
1758 pci_unregister_driver(&netxen_driver);
1759 destroy_workqueue(netxen_workq);
1762 module_exit(netxen_exit_module);