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 NXWR32(adapter, tx_ring->crb_cmd_producer, producer);
115 static uint32_t crb_cmd_consumer[4] = {
116 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
117 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
121 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
122 struct nx_host_tx_ring *tx_ring, u32 consumer)
124 NXWR32(adapter, tx_ring->crb_cmd_consumer, consumer);
127 static uint32_t msi_tgt_status[8] = {
128 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
129 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
130 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
131 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
134 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
136 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
138 struct netxen_adapter *adapter = sds_ring->adapter;
140 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
143 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
145 struct netxen_adapter *adapter = sds_ring->adapter;
147 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
149 if (!NETXEN_IS_MSI_FAMILY(adapter))
150 adapter->pci_write_immediate(adapter,
151 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
155 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
157 int size = sizeof(struct nx_host_sds_ring) * count;
159 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
161 return (recv_ctx->sds_rings == NULL);
165 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
167 if (recv_ctx->sds_rings != NULL)
168 kfree(recv_ctx->sds_rings);
172 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
175 struct nx_host_sds_ring *sds_ring;
176 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
178 if ((adapter->flags & NETXEN_NIC_MSIX_ENABLED) &&
179 adapter->rss_supported)
180 adapter->max_sds_rings = (num_online_cpus() >= 4) ? 4 : 2;
182 adapter->max_sds_rings = 1;
184 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
187 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
188 sds_ring = &recv_ctx->sds_rings[ring];
189 netif_napi_add(netdev, &sds_ring->napi,
190 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
197 netxen_napi_enable(struct netxen_adapter *adapter)
200 struct nx_host_sds_ring *sds_ring;
201 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
203 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
204 sds_ring = &recv_ctx->sds_rings[ring];
205 napi_enable(&sds_ring->napi);
206 netxen_nic_enable_int(sds_ring);
211 netxen_napi_disable(struct netxen_adapter *adapter)
214 struct nx_host_sds_ring *sds_ring;
215 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
217 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
218 sds_ring = &recv_ctx->sds_rings[ring];
219 netxen_nic_disable_int(sds_ring);
220 napi_disable(&sds_ring->napi);
224 static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
226 struct pci_dev *pdev = adapter->pdev;
227 uint64_t mask, cmask;
229 adapter->pci_using_dac = 0;
231 mask = DMA_BIT_MASK(32);
233 * Consistent DMA mask is set to 32 bit because it cannot be set to
234 * 35 bits. For P3 also leave it at 32 bits for now. Only the rings
235 * come off this pool.
237 cmask = DMA_BIT_MASK(32);
240 if (revision_id >= NX_P3_B0)
241 mask = DMA_BIT_MASK(39);
242 else if (revision_id == NX_P2_C1)
243 mask = DMA_BIT_MASK(35);
245 if (pci_set_dma_mask(pdev, mask) == 0 &&
246 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
247 adapter->pci_using_dac = 1;
254 /* Update addressable range if firmware supports it */
256 nx_update_dma_mask(struct netxen_adapter *adapter)
258 int change, shift, err;
259 uint64_t mask, old_mask;
260 struct pci_dev *pdev = adapter->pdev;
264 shift = NXRD32(adapter, CRB_DMA_SHIFT);
268 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
270 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
274 old_mask = pdev->dma_mask;
275 mask = (1ULL<<(32+shift)) - 1;
277 err = pci_set_dma_mask(pdev, mask);
279 return pci_set_dma_mask(pdev, old_mask);
285 static void netxen_check_options(struct netxen_adapter *adapter)
287 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
288 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
289 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
290 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
292 adapter->msix_supported = 0;
293 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
294 adapter->msix_supported = !!use_msi_x;
295 adapter->rss_supported = !!use_msi_x;
296 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
297 switch (adapter->ahw.board_type) {
298 case NETXEN_BRDTYPE_P2_SB31_10G:
299 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
300 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
301 adapter->msix_supported = !!use_msi_x;
302 adapter->rss_supported = !!use_msi_x;
309 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
310 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
311 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
317 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
321 if (first_boot == 0x55555555) {
322 /* This is the first boot after power up */
323 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
325 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
328 /* PCI bus master workaround */
329 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
330 if (!(first_boot & 0x4)) {
332 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
333 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
336 /* This is the first boot after power up */
337 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
338 if (first_boot != 0x80000f) {
339 /* clear the register for future unloads/loads */
340 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
344 /* Start P2 boot loader */
345 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
346 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
350 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
352 if (++timeout > 5000)
355 } while (val == NETXEN_BDINFO_MAGIC);
360 static void netxen_set_port_mode(struct netxen_adapter *adapter)
364 val = adapter->ahw.board_type;
365 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
366 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
367 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
368 data = NETXEN_PORT_MODE_802_3_AP;
369 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
370 } else if (port_mode == NETXEN_PORT_MODE_XG) {
371 data = NETXEN_PORT_MODE_XG;
372 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
373 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
374 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
375 NXWR32(adapter, 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 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
380 data = NETXEN_PORT_MODE_AUTO_NEG;
381 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
384 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
385 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
386 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
387 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
388 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
390 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
394 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
399 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
401 pci_read_config_dword(pdev, pos, &control);
403 control |= PCI_MSIX_FLAGS_ENABLE;
406 pci_write_config_dword(pdev, pos, control);
410 static void netxen_init_msix_entries(struct netxen_adapter *adapter)
414 for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
415 adapter->msix_entries[i].entry = i;
419 netxen_read_mac_addr(struct netxen_adapter *adapter)
424 struct net_device *netdev = adapter->netdev;
425 struct pci_dev *pdev = adapter->pdev;
427 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
428 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
431 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
435 p = (unsigned char *)&mac_addr;
436 for (i = 0; i < 6; i++)
437 netdev->dev_addr[i] = *(p + 5 - i);
439 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
441 /* set station address */
443 if (!is_valid_ether_addr(netdev->perm_addr))
444 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
449 int netxen_nic_set_mac(struct net_device *netdev, void *p)
451 struct netxen_adapter *adapter = netdev_priv(netdev);
452 struct sockaddr *addr = p;
454 if (!is_valid_ether_addr(addr->sa_data))
457 if (netif_running(netdev)) {
458 netif_device_detach(netdev);
459 netxen_napi_disable(adapter);
462 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
463 adapter->macaddr_set(adapter, addr->sa_data);
465 if (netif_running(netdev)) {
466 netif_device_attach(netdev);
467 netxen_napi_enable(adapter);
472 static void netxen_set_multicast_list(struct net_device *dev)
474 struct netxen_adapter *adapter = netdev_priv(dev);
476 adapter->set_multi(dev);
479 static const struct net_device_ops netxen_netdev_ops = {
480 .ndo_open = netxen_nic_open,
481 .ndo_stop = netxen_nic_close,
482 .ndo_start_xmit = netxen_nic_xmit_frame,
483 .ndo_get_stats = netxen_nic_get_stats,
484 .ndo_validate_addr = eth_validate_addr,
485 .ndo_set_multicast_list = netxen_set_multicast_list,
486 .ndo_set_mac_address = netxen_nic_set_mac,
487 .ndo_change_mtu = netxen_nic_change_mtu,
488 .ndo_tx_timeout = netxen_tx_timeout,
489 #ifdef CONFIG_NET_POLL_CONTROLLER
490 .ndo_poll_controller = netxen_nic_poll_controller,
495 netxen_setup_intr(struct netxen_adapter *adapter)
497 struct netxen_legacy_intr_set *legacy_intrp;
498 struct pci_dev *pdev = adapter->pdev;
500 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
502 if (adapter->ahw.revision_id >= NX_P3_B0)
503 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
505 legacy_intrp = &legacy_intr[0];
506 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
507 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
508 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
509 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
511 netxen_set_msix_bit(pdev, 0);
513 if (adapter->msix_supported) {
515 netxen_init_msix_entries(adapter);
516 if (pci_enable_msix(pdev, adapter->msix_entries,
517 MSIX_ENTRIES_PER_ADAPTER))
520 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
521 netxen_set_msix_bit(pdev, 1);
522 dev_info(&pdev->dev, "using msi-x interrupts\n");
526 if (use_msi && !pci_enable_msi(pdev)) {
527 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
528 adapter->msi_tgt_status =
529 msi_tgt_status[adapter->ahw.pci_func];
530 dev_info(&pdev->dev, "using msi interrupts\n");
532 dev_info(&pdev->dev, "using legacy interrupts\n");
533 adapter->msix_entries[0].vector = pdev->irq;
538 netxen_teardown_intr(struct netxen_adapter *adapter)
540 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
541 pci_disable_msix(adapter->pdev);
542 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
543 pci_disable_msi(adapter->pdev);
547 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
549 if (adapter->ahw.db_base != NULL)
550 iounmap(adapter->ahw.db_base);
551 if (adapter->ahw.pci_base0 != NULL)
552 iounmap(adapter->ahw.pci_base0);
553 if (adapter->ahw.pci_base1 != NULL)
554 iounmap(adapter->ahw.pci_base1);
555 if (adapter->ahw.pci_base2 != NULL)
556 iounmap(adapter->ahw.pci_base2);
560 netxen_setup_pci_map(struct netxen_adapter *adapter)
562 void __iomem *mem_ptr0 = NULL;
563 void __iomem *mem_ptr1 = NULL;
564 void __iomem *mem_ptr2 = NULL;
565 void __iomem *db_ptr = NULL;
567 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
569 struct pci_dev *pdev = adapter->pdev;
570 int pci_func = adapter->ahw.pci_func;
575 * Set the CRB window to invalid. If any register in window 0 is
576 * accessed it should set the window to 0 and then reset it to 1.
578 adapter->curr_window = 255;
579 adapter->ahw.qdr_sn_window = -1;
580 adapter->ahw.ddr_mn_window = -1;
582 /* remap phys address */
583 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
584 mem_len = pci_resource_len(pdev, 0);
587 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
588 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
589 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
590 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
591 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
592 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
593 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
595 /* 128 Meg of memory */
596 if (mem_len == NETXEN_PCI_128MB_SIZE) {
597 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
598 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
599 SECOND_PAGE_GROUP_SIZE);
600 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
601 THIRD_PAGE_GROUP_SIZE);
602 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
603 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
604 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
605 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
606 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
607 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
608 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
609 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
610 adapter->pci_write_immediate =
611 netxen_nic_pci_write_immediate_2M;
612 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
613 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
614 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
616 mem_ptr0 = pci_ioremap_bar(pdev, 0);
617 if (mem_ptr0 == NULL) {
618 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
623 adapter->ahw.ddr_mn_window = 0;
624 adapter->ahw.qdr_sn_window = 0;
626 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
628 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
630 adapter->ahw.ms_win_crb += (pci_func * 0x20);
632 adapter->ahw.ms_win_crb +=
633 0xA0 + ((pci_func - 4) * 0x10);
638 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
640 adapter->ahw.pci_base0 = mem_ptr0;
641 adapter->ahw.pci_len0 = pci_len0;
642 adapter->ahw.pci_base1 = mem_ptr1;
643 adapter->ahw.pci_base2 = mem_ptr2;
645 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
648 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
649 db_len = pci_resource_len(pdev, 4);
652 printk(KERN_ERR "%s: doorbell is disabled\n",
653 netxen_nic_driver_name);
658 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
660 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
661 netxen_nic_driver_name);
667 adapter->ahw.db_base = db_ptr;
668 adapter->ahw.db_len = db_len;
672 netxen_cleanup_pci_map(adapter);
677 netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
679 int val, err, first_boot;
680 struct pci_dev *pdev = adapter->pdev;
682 int first_driver = 0;
684 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
685 first_driver = (adapter->portnum == 0);
687 first_driver = (adapter->ahw.pci_func == 0);
692 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
694 err = netxen_check_hw_init(adapter, first_boot);
696 dev_err(&pdev->dev, "error in init HW init sequence\n");
701 netxen_request_firmware(adapter);
703 if (first_boot != 0x55555555) {
704 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
705 netxen_pinit_from_rom(adapter, 0);
709 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
710 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
711 netxen_set_port_mode(adapter);
713 netxen_load_firmware(adapter);
715 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
717 /* Initialize multicast addr pool owners */
719 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
721 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
725 err = netxen_initialize_adapter_offload(adapter);
730 * Tell the hardware our version number.
732 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
733 | ((_NETXEN_NIC_LINUX_MINOR << 8))
734 | (_NETXEN_NIC_LINUX_SUBVERSION);
735 NXWR32(adapter, CRB_DRIVER_VERSION, val);
737 /* Handshake with the card before we register the devices. */
738 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
740 netxen_free_adapter_offload(adapter);
748 netxen_nic_request_irq(struct netxen_adapter *adapter)
750 irq_handler_t handler;
751 struct nx_host_sds_ring *sds_ring;
754 unsigned long flags = IRQF_SAMPLE_RANDOM;
755 struct net_device *netdev = adapter->netdev;
756 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
758 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
759 handler = netxen_msix_intr;
760 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
761 handler = netxen_msi_intr;
763 flags |= IRQF_SHARED;
764 handler = netxen_intr;
766 adapter->irq = netdev->irq;
768 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
769 sds_ring = &recv_ctx->sds_rings[ring];
770 sprintf(sds_ring->name, "%16s[%d]", netdev->name, ring);
771 err = request_irq(sds_ring->irq, handler,
772 flags, sds_ring->name, sds_ring);
781 netxen_nic_free_irq(struct netxen_adapter *adapter)
784 struct nx_host_sds_ring *sds_ring;
786 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
788 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
789 sds_ring = &recv_ctx->sds_rings[ring];
790 free_irq(sds_ring->irq, sds_ring);
795 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
799 err = adapter->init_port(adapter, adapter->physical_port);
801 printk(KERN_ERR "%s: Failed to initialize port %d\n",
802 netxen_nic_driver_name, adapter->portnum);
805 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
806 adapter->macaddr_set(adapter, netdev->dev_addr);
808 adapter->set_multi(netdev);
809 adapter->set_mtu(adapter, netdev->mtu);
811 adapter->ahw.linkup = 0;
813 netxen_napi_enable(adapter);
815 if (adapter->max_sds_rings > 1)
816 netxen_config_rss(adapter, 1);
818 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
819 netxen_linkevent_request(adapter, 1);
821 netxen_nic_set_link_parameters(adapter);
823 mod_timer(&adapter->watchdog_timer, jiffies);
829 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
831 netif_carrier_off(netdev);
832 netif_stop_queue(netdev);
834 netxen_napi_disable(adapter);
836 if (adapter->stop_port)
837 adapter->stop_port(adapter);
839 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
840 netxen_p3_free_mac_list(adapter);
842 netxen_release_tx_buffers(adapter);
844 FLUSH_SCHEDULED_WORK();
845 del_timer_sync(&adapter->watchdog_timer);
850 netxen_nic_attach(struct netxen_adapter *adapter)
852 struct net_device *netdev = adapter->netdev;
853 struct pci_dev *pdev = adapter->pdev;
855 struct nx_host_rds_ring *rds_ring;
856 struct nx_host_tx_ring *tx_ring;
858 err = netxen_init_firmware(adapter);
860 printk(KERN_ERR "Failed to init firmware\n");
864 if (adapter->fw_major < 4)
865 adapter->max_rds_rings = 3;
867 adapter->max_rds_rings = 2;
869 err = netxen_alloc_sw_resources(adapter);
871 printk(KERN_ERR "%s: Error in setting sw resources\n",
876 netxen_nic_clear_stats(adapter);
878 err = netxen_alloc_hw_resources(adapter);
880 printk(KERN_ERR "%s: Error in setting hw resources\n",
882 goto err_out_free_sw;
885 if (adapter->fw_major < 4) {
886 tx_ring = adapter->tx_ring;
887 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
888 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
890 netxen_nic_update_cmd_producer(adapter, tx_ring, 0);
891 netxen_nic_update_cmd_consumer(adapter, tx_ring, 0);
894 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
895 rds_ring = &adapter->recv_ctx.rds_rings[ring];
896 netxen_post_rx_buffers(adapter, ring, rds_ring);
899 err = netxen_nic_request_irq(adapter);
901 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
903 goto err_out_free_rxbuf;
906 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
910 netxen_release_rx_buffers(adapter);
911 netxen_free_hw_resources(adapter);
913 netxen_free_sw_resources(adapter);
918 netxen_nic_detach(struct netxen_adapter *adapter)
920 netxen_nic_free_irq(adapter);
922 netxen_release_rx_buffers(adapter);
923 netxen_free_hw_resources(adapter);
924 netxen_free_sw_resources(adapter);
930 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
932 struct net_device *netdev = NULL;
933 struct netxen_adapter *adapter = NULL;
935 int pci_func_id = PCI_FUNC(pdev->devfn);
938 if (pdev->class != 0x020000) {
939 printk(KERN_DEBUG "NetXen function %d, class %x will not "
940 "be enabled.\n",pci_func_id, pdev->class);
944 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
945 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
946 "will not be enabled.\n",
951 if ((err = pci_enable_device(pdev)))
954 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
956 goto err_out_disable_pdev;
959 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
960 goto err_out_disable_pdev;
962 pci_set_master(pdev);
964 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
966 printk(KERN_ERR"%s: Failed to allocate memory for the "
967 "device block.Check system memory resource"
968 " usage.\n", netxen_nic_driver_name);
969 goto err_out_free_res;
972 SET_NETDEV_DEV(netdev, &pdev->dev);
974 adapter = netdev_priv(netdev);
975 adapter->netdev = netdev;
976 adapter->pdev = pdev;
977 adapter->ahw.pci_func = pci_func_id;
979 revision_id = pdev->revision;
980 adapter->ahw.revision_id = revision_id;
982 err = nx_set_dma_mask(adapter, revision_id);
984 goto err_out_free_netdev;
986 rwlock_init(&adapter->adapter_lock);
987 spin_lock_init(&adapter->tx_clean_lock);
988 INIT_LIST_HEAD(&adapter->mac_list);
990 err = netxen_setup_pci_map(adapter);
992 goto err_out_free_netdev;
994 /* This will be reset for mezz cards */
995 adapter->portnum = pci_func_id;
996 adapter->rx_csum = 1;
997 adapter->mc_enabled = 0;
998 if (NX_IS_REVISION_P3(revision_id))
999 adapter->max_mc_count = 38;
1001 adapter->max_mc_count = 16;
1003 netdev->netdev_ops = &netxen_netdev_ops;
1004 netdev->watchdog_timeo = 2*HZ;
1006 netxen_nic_change_mtu(netdev, netdev->mtu);
1008 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1010 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1011 netdev->features |= (NETIF_F_GRO);
1012 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1014 if (NX_IS_REVISION_P3(revision_id)) {
1015 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1016 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1019 if (adapter->pci_using_dac) {
1020 netdev->features |= NETIF_F_HIGHDMA;
1021 netdev->vlan_features |= NETIF_F_HIGHDMA;
1024 if (netxen_nic_get_board_info(adapter) != 0) {
1025 printk("%s: Error getting board config info.\n",
1026 netxen_nic_driver_name);
1028 goto err_out_iounmap;
1031 netxen_initialize_adapter_ops(adapter);
1033 /* Mezz cards have PCI function 0,2,3 enabled */
1034 switch (adapter->ahw.board_type) {
1035 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1036 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1037 if (pci_func_id >= 2)
1038 adapter->portnum = pci_func_id - 2;
1044 err = netxen_start_firmware(adapter, 1);
1046 goto err_out_iounmap;
1048 nx_update_dma_mask(adapter);
1050 netxen_nic_get_firmware_info(adapter);
1053 * See if the firmware gave us a virtual-physical port mapping.
1055 adapter->physical_port = adapter->portnum;
1056 if (adapter->fw_major < 4) {
1057 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1058 if (i != 0x55555555)
1059 adapter->physical_port = i;
1062 netxen_check_options(adapter);
1064 netxen_setup_intr(adapter);
1066 netdev->irq = adapter->msix_entries[0].vector;
1068 if (netxen_napi_add(adapter, netdev))
1069 goto err_out_disable_msi;
1071 init_timer(&adapter->watchdog_timer);
1072 adapter->watchdog_timer.function = &netxen_watchdog;
1073 adapter->watchdog_timer.data = (unsigned long)adapter;
1074 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1075 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1077 err = netxen_read_mac_addr(adapter);
1079 dev_warn(&pdev->dev, "failed to read mac addr\n");
1081 netif_carrier_off(netdev);
1082 netif_stop_queue(netdev);
1084 if ((err = register_netdev(netdev))) {
1085 printk(KERN_ERR "%s: register_netdev failed port #%d"
1086 " aborting\n", netxen_nic_driver_name,
1089 goto err_out_disable_msi;
1092 pci_set_drvdata(pdev, adapter);
1094 switch (adapter->ahw.port_type) {
1095 case NETXEN_NIC_GBE:
1096 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1097 adapter->netdev->name);
1099 case NETXEN_NIC_XGBE:
1100 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1101 adapter->netdev->name);
1107 err_out_disable_msi:
1108 netxen_teardown_intr(adapter);
1110 netxen_free_adapter_offload(adapter);
1113 netxen_cleanup_pci_map(adapter);
1115 err_out_free_netdev:
1116 free_netdev(netdev);
1119 pci_release_regions(pdev);
1121 err_out_disable_pdev:
1122 pci_set_drvdata(pdev, NULL);
1123 pci_disable_device(pdev);
1127 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1129 struct netxen_adapter *adapter;
1130 struct net_device *netdev;
1132 adapter = pci_get_drvdata(pdev);
1133 if (adapter == NULL)
1136 netdev = adapter->netdev;
1138 unregister_netdev(netdev);
1140 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1141 netxen_nic_detach(adapter);
1144 if (adapter->portnum == 0)
1145 netxen_free_adapter_offload(adapter);
1147 netxen_teardown_intr(adapter);
1148 netxen_free_sds_rings(&adapter->recv_ctx);
1150 netxen_cleanup_pci_map(adapter);
1152 netxen_release_firmware(adapter);
1154 pci_release_regions(pdev);
1155 pci_disable_device(pdev);
1156 pci_set_drvdata(pdev, NULL);
1158 free_netdev(netdev);
1162 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1165 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1166 struct net_device *netdev = adapter->netdev;
1168 netif_device_detach(netdev);
1170 if (netif_running(netdev))
1171 netxen_nic_down(adapter, netdev);
1173 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1174 netxen_nic_detach(adapter);
1176 pci_save_state(pdev);
1178 if (netxen_nic_wol_supported(adapter)) {
1179 pci_enable_wake(pdev, PCI_D3cold, 1);
1180 pci_enable_wake(pdev, PCI_D3hot, 1);
1183 pci_disable_device(pdev);
1184 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1190 netxen_nic_resume(struct pci_dev *pdev)
1192 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1193 struct net_device *netdev = adapter->netdev;
1196 pci_set_power_state(pdev, PCI_D0);
1197 pci_restore_state(pdev);
1199 err = pci_enable_device(pdev);
1203 adapter->curr_window = 255;
1205 err = netxen_start_firmware(adapter, 0);
1207 dev_err(&pdev->dev, "failed to start firmware\n");
1211 if (netif_running(netdev)) {
1212 err = netxen_nic_attach(adapter);
1216 err = netxen_nic_up(adapter, netdev);
1220 netif_device_attach(netdev);
1226 static int netxen_nic_open(struct net_device *netdev)
1228 struct netxen_adapter *adapter = netdev_priv(netdev);
1231 if (adapter->driver_mismatch)
1234 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1235 err = netxen_nic_attach(adapter);
1240 err = netxen_nic_up(adapter, netdev);
1244 netif_start_queue(netdev);
1249 netxen_nic_detach(adapter);
1254 * netxen_nic_close - Disables a network interface entry point
1256 static int netxen_nic_close(struct net_device *netdev)
1258 struct netxen_adapter *adapter = netdev_priv(netdev);
1260 netxen_nic_down(adapter, netdev);
1264 static bool netxen_tso_check(struct net_device *netdev,
1265 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1268 u8 opcode = TX_ETHER_PKT;
1269 __be16 protocol = skb->protocol;
1272 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1273 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1274 protocol = vh->h_vlan_encapsulated_proto;
1275 flags = FLAGS_VLAN_TAGGED;
1278 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1279 skb_shinfo(skb)->gso_size > 0) {
1281 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1282 desc->total_hdr_length =
1283 skb_transport_offset(skb) + tcp_hdrlen(skb);
1285 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1286 TX_TCP_LSO6 : TX_TCP_LSO;
1289 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1292 if (protocol == cpu_to_be16(ETH_P_IP)) {
1293 l4proto = ip_hdr(skb)->protocol;
1295 if (l4proto == IPPROTO_TCP)
1296 opcode = TX_TCP_PKT;
1297 else if(l4proto == IPPROTO_UDP)
1298 opcode = TX_UDP_PKT;
1299 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1300 l4proto = ipv6_hdr(skb)->nexthdr;
1302 if (l4proto == IPPROTO_TCP)
1303 opcode = TX_TCPV6_PKT;
1304 else if(l4proto == IPPROTO_UDP)
1305 opcode = TX_UDPV6_PKT;
1308 desc->tcp_hdr_offset = skb_transport_offset(skb);
1309 desc->ip_hdr_offset = skb_network_offset(skb);
1310 netxen_set_tx_flags_opcode(desc, flags, opcode);
1315 netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1316 struct netxen_cmd_buffer *pbuf, int last)
1319 struct netxen_skb_frag *buffrag;
1321 buffrag = &pbuf->frag_array[0];
1322 pci_unmap_single(pdev, buffrag->dma,
1323 buffrag->length, PCI_DMA_TODEVICE);
1325 for (k = 1; k < last; k++) {
1326 buffrag = &pbuf->frag_array[k];
1327 pci_unmap_page(pdev, buffrag->dma,
1328 buffrag->length, PCI_DMA_TODEVICE);
1333 netxen_clear_cmddesc(u64 *desc)
1336 for (i = 0; i < 8; i++)
1341 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1343 struct netxen_adapter *adapter = netdev_priv(netdev);
1344 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1345 unsigned int first_seg_len = skb->len - skb->data_len;
1346 struct netxen_cmd_buffer *pbuf;
1347 struct netxen_skb_frag *buffrag;
1348 struct cmd_desc_type0 *hwdesc;
1349 struct pci_dev *pdev = adapter->pdev;
1350 dma_addr_t temp_dma;
1353 u32 producer, consumer;
1354 int frag_count, no_of_desc;
1355 u32 num_txd = tx_ring->num_desc;
1356 bool is_tso = false;
1358 frag_count = skb_shinfo(skb)->nr_frags + 1;
1360 /* 4 fragments per cmd des */
1361 no_of_desc = (frag_count + 3) >> 2;
1363 producer = tx_ring->producer;
1365 consumer = tx_ring->sw_consumer;
1366 if ((no_of_desc+2) >= find_diff_among(producer, consumer, num_txd)) {
1367 netif_stop_queue(netdev);
1369 return NETDEV_TX_BUSY;
1372 hwdesc = &tx_ring->desc_head[producer];
1373 netxen_clear_cmddesc((u64 *)hwdesc);
1374 pbuf = &tx_ring->cmd_buf_arr[producer];
1376 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1379 pbuf->frag_count = frag_count;
1380 buffrag = &pbuf->frag_array[0];
1381 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
1383 if (pci_dma_mapping_error(pdev, temp_dma))
1386 buffrag->dma = temp_dma;
1387 buffrag->length = first_seg_len;
1388 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1389 netxen_set_tx_port(hwdesc, adapter->portnum);
1391 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
1392 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1394 for (i = 1, k = 1; i < frag_count; i++, k++) {
1395 struct skb_frag_struct *frag;
1397 unsigned long offset;
1399 /* move to next desc. if there is a need */
1400 if ((i & 0x3) == 0) {
1402 producer = get_next_index(producer, num_txd);
1403 hwdesc = &tx_ring->desc_head[producer];
1404 netxen_clear_cmddesc((u64 *)hwdesc);
1405 pbuf = &tx_ring->cmd_buf_arr[producer];
1408 frag = &skb_shinfo(skb)->frags[i - 1];
1410 offset = frag->page_offset;
1413 temp_dma = pci_map_page(pdev, frag->page, offset,
1414 len, PCI_DMA_TODEVICE);
1415 if (pci_dma_mapping_error(pdev, temp_dma)) {
1416 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1421 buffrag->dma = temp_dma;
1422 buffrag->length = temp_len;
1424 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
1427 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1430 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1433 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1436 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1441 producer = get_next_index(producer, num_txd);
1443 /* For LSO, we need to copy the MAC/IP/TCP headers into
1444 * the descriptor ring
1447 int hdr_len, first_hdr_len, more_hdr;
1448 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1449 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1450 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1453 first_hdr_len = hdr_len;
1456 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1457 hwdesc = &tx_ring->desc_head[producer];
1458 pbuf = &tx_ring->cmd_buf_arr[producer];
1461 /* copy the first 64 bytes */
1462 memcpy(((void *)hwdesc) + 2,
1463 (void *)(skb->data), first_hdr_len);
1464 producer = get_next_index(producer, num_txd);
1467 hwdesc = &tx_ring->desc_head[producer];
1468 pbuf = &tx_ring->cmd_buf_arr[producer];
1470 /* copy the next 64 bytes - should be enough except
1471 * for pathological case
1473 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1477 producer = get_next_index(producer, num_txd);
1481 tx_ring->producer = producer;
1482 adapter->stats.txbytes += skb->len;
1484 netxen_nic_update_cmd_producer(adapter, tx_ring, producer);
1486 adapter->stats.xmitcalled++;
1487 netdev->trans_start = jiffies;
1489 return NETDEV_TX_OK;
1492 adapter->stats.txdropped++;
1493 dev_kfree_skb_any(skb);
1494 return NETDEV_TX_OK;
1497 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1499 struct net_device *netdev = adapter->netdev;
1500 uint32_t temp, temp_state, temp_val;
1503 temp = NXRD32(adapter, CRB_TEMP_STATE);
1505 temp_state = nx_get_temp_state(temp);
1506 temp_val = nx_get_temp_val(temp);
1508 if (temp_state == NX_TEMP_PANIC) {
1510 "%s: Device temperature %d degrees C exceeds"
1511 " maximum allowed. Hardware has been shut down.\n",
1512 netxen_nic_driver_name, temp_val);
1514 netif_carrier_off(netdev);
1515 netif_stop_queue(netdev);
1517 } else if (temp_state == NX_TEMP_WARN) {
1518 if (adapter->temp == NX_TEMP_NORMAL) {
1520 "%s: Device temperature %d degrees C "
1521 "exceeds operating range."
1522 " Immediate action needed.\n",
1523 netxen_nic_driver_name, temp_val);
1526 if (adapter->temp == NX_TEMP_WARN) {
1528 "%s: Device temperature is now %d degrees C"
1529 " in normal range.\n", netxen_nic_driver_name,
1533 adapter->temp = temp_state;
1537 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1539 struct net_device *netdev = adapter->netdev;
1541 if (adapter->ahw.linkup && !linkup) {
1542 printk(KERN_INFO "%s: %s NIC Link is down\n",
1543 netxen_nic_driver_name, netdev->name);
1544 adapter->ahw.linkup = 0;
1545 if (netif_running(netdev)) {
1546 netif_carrier_off(netdev);
1547 netif_stop_queue(netdev);
1550 if (!adapter->has_link_events)
1551 netxen_nic_set_link_parameters(adapter);
1553 } else if (!adapter->ahw.linkup && linkup) {
1554 printk(KERN_INFO "%s: %s NIC Link is up\n",
1555 netxen_nic_driver_name, netdev->name);
1556 adapter->ahw.linkup = 1;
1557 if (netif_running(netdev)) {
1558 netif_carrier_on(netdev);
1559 netif_wake_queue(netdev);
1562 if (!adapter->has_link_events)
1563 netxen_nic_set_link_parameters(adapter);
1567 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1569 u32 val, port, linkup;
1571 port = adapter->physical_port;
1573 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1574 val = NXRD32(adapter, CRB_XG_STATE_P3);
1575 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1576 linkup = (val == XG_LINK_UP_P3);
1578 val = NXRD32(adapter, CRB_XG_STATE);
1579 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1580 linkup = (val >> port) & 1;
1582 val = (val >> port*8) & 0xff;
1583 linkup = (val == XG_LINK_UP);
1587 netxen_advert_link_change(adapter, linkup);
1590 static void netxen_watchdog(unsigned long v)
1592 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1594 SCHEDULE_WORK(&adapter->watchdog_task);
1597 void netxen_watchdog_task(struct work_struct *work)
1599 struct netxen_adapter *adapter =
1600 container_of(work, struct netxen_adapter, watchdog_task);
1602 if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
1605 if (!adapter->has_link_events)
1606 netxen_nic_handle_phy_intr(adapter);
1608 if (netif_running(adapter->netdev))
1609 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1612 static void netxen_tx_timeout(struct net_device *netdev)
1614 struct netxen_adapter *adapter = (struct netxen_adapter *)
1615 netdev_priv(netdev);
1616 SCHEDULE_WORK(&adapter->tx_timeout_task);
1619 static void netxen_tx_timeout_task(struct work_struct *work)
1621 struct netxen_adapter *adapter =
1622 container_of(work, struct netxen_adapter, tx_timeout_task);
1624 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1625 netxen_nic_driver_name, adapter->netdev->name);
1627 netxen_napi_disable(adapter);
1629 adapter->netdev->trans_start = jiffies;
1631 netxen_napi_enable(adapter);
1632 netif_wake_queue(adapter->netdev);
1635 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1637 struct netxen_adapter *adapter = netdev_priv(netdev);
1638 struct net_device_stats *stats = &adapter->net_stats;
1640 memset(stats, 0, sizeof(*stats));
1642 stats->rx_packets = adapter->stats.no_rcv;
1643 stats->tx_packets = adapter->stats.xmitfinished;
1644 stats->rx_bytes = adapter->stats.rxbytes;
1645 stats->tx_bytes = adapter->stats.txbytes;
1646 stats->rx_dropped = adapter->stats.rxdropped;
1647 stats->tx_dropped = adapter->stats.txdropped;
1652 static irqreturn_t netxen_intr(int irq, void *data)
1654 struct nx_host_sds_ring *sds_ring = data;
1655 struct netxen_adapter *adapter = sds_ring->adapter;
1658 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1660 if (!(status & adapter->legacy_intr.int_vec_bit))
1663 if (adapter->ahw.revision_id >= NX_P3_B1) {
1664 /* check interrupt state machine, to be sure */
1665 status = adapter->pci_read_immediate(adapter,
1667 if (!ISR_LEGACY_INT_TRIGGERED(status))
1671 unsigned long our_int = 0;
1673 our_int = NXRD32(adapter, CRB_INT_VECTOR);
1675 /* not our interrupt */
1676 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1679 /* claim interrupt */
1680 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
1683 /* clear interrupt */
1684 if (adapter->fw_major < 4)
1685 netxen_nic_disable_int(sds_ring);
1687 adapter->pci_write_immediate(adapter,
1688 adapter->legacy_intr.tgt_status_reg,
1690 /* read twice to ensure write is flushed */
1691 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1692 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1694 napi_schedule(&sds_ring->napi);
1699 static irqreturn_t netxen_msi_intr(int irq, void *data)
1701 struct nx_host_sds_ring *sds_ring = data;
1702 struct netxen_adapter *adapter = sds_ring->adapter;
1704 /* clear interrupt */
1705 adapter->pci_write_immediate(adapter,
1706 adapter->msi_tgt_status, 0xffffffff);
1708 napi_schedule(&sds_ring->napi);
1712 static irqreturn_t netxen_msix_intr(int irq, void *data)
1714 struct nx_host_sds_ring *sds_ring = data;
1716 napi_schedule(&sds_ring->napi);
1720 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1722 struct nx_host_sds_ring *sds_ring =
1723 container_of(napi, struct nx_host_sds_ring, napi);
1725 struct netxen_adapter *adapter = sds_ring->adapter;
1730 tx_complete = netxen_process_cmd_ring(adapter);
1732 work_done = netxen_process_rcv_ring(sds_ring, budget);
1734 if ((work_done < budget) && tx_complete) {
1735 napi_complete(&sds_ring->napi);
1736 netxen_nic_enable_int(sds_ring);
1742 #ifdef CONFIG_NET_POLL_CONTROLLER
1743 static void netxen_nic_poll_controller(struct net_device *netdev)
1745 struct netxen_adapter *adapter = netdev_priv(netdev);
1746 disable_irq(adapter->irq);
1747 netxen_intr(adapter->irq, adapter);
1748 enable_irq(adapter->irq);
1752 static struct pci_driver netxen_driver = {
1753 .name = netxen_nic_driver_name,
1754 .id_table = netxen_pci_tbl,
1755 .probe = netxen_nic_probe,
1756 .remove = __devexit_p(netxen_nic_remove),
1757 .suspend = netxen_nic_suspend,
1758 .resume = netxen_nic_resume
1761 /* Driver Registration on NetXen card */
1763 static int __init netxen_init_module(void)
1765 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1767 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1770 return pci_register_driver(&netxen_driver);
1773 module_init(netxen_init_module);
1775 static void __exit netxen_exit_module(void)
1777 pci_unregister_driver(&netxen_driver);
1778 destroy_workqueue(netxen_workq);
1781 module_exit(netxen_exit_module);