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 void netxen_watchdog(unsigned long);
99 static uint32_t crb_cmd_producer[4] = {
100 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
101 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
105 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
106 struct nx_host_tx_ring *tx_ring)
108 NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
110 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
111 netif_stop_queue(adapter->netdev);
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)
125 NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
128 static uint32_t msi_tgt_status[8] = {
129 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
130 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
131 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
132 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
135 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
137 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
139 struct netxen_adapter *adapter = sds_ring->adapter;
141 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
144 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
146 struct netxen_adapter *adapter = sds_ring->adapter;
148 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
150 if (!NETXEN_IS_MSI_FAMILY(adapter))
151 adapter->pci_write_immediate(adapter,
152 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
156 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
158 int size = sizeof(struct nx_host_sds_ring) * count;
160 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
162 return (recv_ctx->sds_rings == NULL);
166 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
168 if (recv_ctx->sds_rings != NULL)
169 kfree(recv_ctx->sds_rings);
171 recv_ctx->sds_rings = NULL;
175 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
178 struct nx_host_sds_ring *sds_ring;
179 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
181 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
184 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
185 sds_ring = &recv_ctx->sds_rings[ring];
186 netif_napi_add(netdev, &sds_ring->napi,
187 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
194 netxen_napi_del(struct netxen_adapter *adapter)
197 struct nx_host_sds_ring *sds_ring;
198 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
200 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
201 sds_ring = &recv_ctx->sds_rings[ring];
202 netif_napi_del(&sds_ring->napi);
205 netxen_free_sds_rings(&adapter->recv_ctx);
209 netxen_napi_enable(struct netxen_adapter *adapter)
212 struct nx_host_sds_ring *sds_ring;
213 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
215 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
216 sds_ring = &recv_ctx->sds_rings[ring];
217 napi_enable(&sds_ring->napi);
218 netxen_nic_enable_int(sds_ring);
223 netxen_napi_disable(struct netxen_adapter *adapter)
226 struct nx_host_sds_ring *sds_ring;
227 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
229 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
230 sds_ring = &recv_ctx->sds_rings[ring];
231 netxen_nic_disable_int(sds_ring);
232 napi_synchronize(&sds_ring->napi);
233 napi_disable(&sds_ring->napi);
237 static int nx_set_dma_mask(struct netxen_adapter *adapter)
239 struct pci_dev *pdev = adapter->pdev;
240 uint64_t mask, cmask;
242 adapter->pci_using_dac = 0;
244 mask = DMA_BIT_MASK(32);
245 cmask = DMA_BIT_MASK(32);
247 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
249 mask = DMA_BIT_MASK(35);
252 mask = DMA_BIT_MASK(39);
256 if (pci_set_dma_mask(pdev, mask) == 0 &&
257 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
258 adapter->pci_using_dac = 1;
265 /* Update addressable range if firmware supports it */
267 nx_update_dma_mask(struct netxen_adapter *adapter)
269 int change, shift, err;
270 uint64_t mask, old_mask, old_cmask;
271 struct pci_dev *pdev = adapter->pdev;
275 shift = NXRD32(adapter, CRB_DMA_SHIFT);
279 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
281 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
285 old_mask = pdev->dma_mask;
286 old_cmask = pdev->dev.coherent_dma_mask;
288 mask = DMA_BIT_MASK(32+shift);
290 err = pci_set_dma_mask(pdev, mask);
294 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
296 err = pci_set_consistent_dma_mask(pdev, mask);
300 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
306 pci_set_dma_mask(pdev, old_mask);
307 pci_set_consistent_dma_mask(pdev, old_cmask);
311 static void netxen_check_options(struct netxen_adapter *adapter)
313 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
314 adapter->num_rxd = MAX_RCV_DESCRIPTORS_10G;
315 else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
316 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
318 adapter->msix_supported = 0;
319 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
320 adapter->msix_supported = !!use_msi_x;
321 adapter->rss_supported = !!use_msi_x;
322 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
323 switch (adapter->ahw.board_type) {
324 case NETXEN_BRDTYPE_P2_SB31_10G:
325 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
326 adapter->msix_supported = !!use_msi_x;
327 adapter->rss_supported = !!use_msi_x;
334 adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
335 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
336 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
342 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
346 if (first_boot == 0x55555555) {
347 /* This is the first boot after power up */
348 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
350 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
353 /* PCI bus master workaround */
354 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
355 if (!(first_boot & 0x4)) {
357 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
358 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
361 /* This is the first boot after power up */
362 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
363 if (first_boot != 0x80000f) {
364 /* clear the register for future unloads/loads */
365 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
369 /* Start P2 boot loader */
370 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
371 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
375 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
377 if (++timeout > 5000)
380 } while (val == NETXEN_BDINFO_MAGIC);
385 static void netxen_set_port_mode(struct netxen_adapter *adapter)
389 val = adapter->ahw.board_type;
390 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
391 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
392 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
393 data = NETXEN_PORT_MODE_802_3_AP;
394 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
395 } else if (port_mode == NETXEN_PORT_MODE_XG) {
396 data = NETXEN_PORT_MODE_XG;
397 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
398 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
399 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
400 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
401 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
402 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
403 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
405 data = NETXEN_PORT_MODE_AUTO_NEG;
406 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
409 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
410 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
411 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
412 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
413 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
415 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
419 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
424 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
426 pci_read_config_dword(pdev, pos, &control);
428 control |= PCI_MSIX_FLAGS_ENABLE;
431 pci_write_config_dword(pdev, pos, control);
435 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
439 for (i = 0; i < count; i++)
440 adapter->msix_entries[i].entry = i;
444 netxen_read_mac_addr(struct netxen_adapter *adapter)
449 struct net_device *netdev = adapter->netdev;
450 struct pci_dev *pdev = adapter->pdev;
452 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
453 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
456 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
460 p = (unsigned char *)&mac_addr;
461 for (i = 0; i < 6; i++)
462 netdev->dev_addr[i] = *(p + 5 - i);
464 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
466 /* set station address */
468 if (!is_valid_ether_addr(netdev->perm_addr))
469 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
474 int netxen_nic_set_mac(struct net_device *netdev, void *p)
476 struct netxen_adapter *adapter = netdev_priv(netdev);
477 struct sockaddr *addr = p;
479 if (!is_valid_ether_addr(addr->sa_data))
482 if (netif_running(netdev)) {
483 netif_device_detach(netdev);
484 netxen_napi_disable(adapter);
487 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
488 adapter->macaddr_set(adapter, addr->sa_data);
490 if (netif_running(netdev)) {
491 netif_device_attach(netdev);
492 netxen_napi_enable(adapter);
497 static void netxen_set_multicast_list(struct net_device *dev)
499 struct netxen_adapter *adapter = netdev_priv(dev);
501 adapter->set_multi(dev);
504 static const struct net_device_ops netxen_netdev_ops = {
505 .ndo_open = netxen_nic_open,
506 .ndo_stop = netxen_nic_close,
507 .ndo_start_xmit = netxen_nic_xmit_frame,
508 .ndo_get_stats = netxen_nic_get_stats,
509 .ndo_validate_addr = eth_validate_addr,
510 .ndo_set_multicast_list = netxen_set_multicast_list,
511 .ndo_set_mac_address = netxen_nic_set_mac,
512 .ndo_change_mtu = netxen_nic_change_mtu,
513 .ndo_tx_timeout = netxen_tx_timeout,
514 #ifdef CONFIG_NET_POLL_CONTROLLER
515 .ndo_poll_controller = netxen_nic_poll_controller,
520 netxen_setup_intr(struct netxen_adapter *adapter)
522 struct netxen_legacy_intr_set *legacy_intrp;
523 struct pci_dev *pdev = adapter->pdev;
526 if (adapter->rss_supported) {
527 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
528 MSIX_ENTRIES_PER_ADAPTER : 2;
532 adapter->max_sds_rings = 1;
534 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
536 if (adapter->ahw.revision_id >= NX_P3_B0)
537 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
539 legacy_intrp = &legacy_intr[0];
540 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
541 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
542 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
543 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
545 netxen_set_msix_bit(pdev, 0);
547 if (adapter->msix_supported) {
549 netxen_init_msix_entries(adapter, num_msix);
550 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
552 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
553 netxen_set_msix_bit(pdev, 1);
555 if (adapter->rss_supported)
556 adapter->max_sds_rings = num_msix;
558 dev_info(&pdev->dev, "using msi-x interrupts\n");
563 pci_disable_msix(pdev);
565 /* fall through for msi */
568 if (use_msi && !pci_enable_msi(pdev)) {
569 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
570 adapter->msi_tgt_status =
571 msi_tgt_status[adapter->ahw.pci_func];
572 dev_info(&pdev->dev, "using msi interrupts\n");
573 adapter->msix_entries[0].vector = pdev->irq;
577 dev_info(&pdev->dev, "using legacy interrupts\n");
578 adapter->msix_entries[0].vector = pdev->irq;
582 netxen_teardown_intr(struct netxen_adapter *adapter)
584 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
585 pci_disable_msix(adapter->pdev);
586 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
587 pci_disable_msi(adapter->pdev);
591 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
593 if (adapter->ahw.db_base != NULL)
594 iounmap(adapter->ahw.db_base);
595 if (adapter->ahw.pci_base0 != NULL)
596 iounmap(adapter->ahw.pci_base0);
597 if (adapter->ahw.pci_base1 != NULL)
598 iounmap(adapter->ahw.pci_base1);
599 if (adapter->ahw.pci_base2 != NULL)
600 iounmap(adapter->ahw.pci_base2);
604 netxen_setup_pci_map(struct netxen_adapter *adapter)
606 void __iomem *mem_ptr0 = NULL;
607 void __iomem *mem_ptr1 = NULL;
608 void __iomem *mem_ptr2 = NULL;
609 void __iomem *db_ptr = NULL;
611 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
613 struct pci_dev *pdev = adapter->pdev;
614 int pci_func = adapter->ahw.pci_func;
619 * Set the CRB window to invalid. If any register in window 0 is
620 * accessed it should set the window to 0 and then reset it to 1.
622 adapter->curr_window = 255;
623 adapter->ahw.qdr_sn_window = -1;
624 adapter->ahw.ddr_mn_window = -1;
626 /* remap phys address */
627 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
628 mem_len = pci_resource_len(pdev, 0);
631 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
632 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
633 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
634 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
635 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
636 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
637 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
639 /* 128 Meg of memory */
640 if (mem_len == NETXEN_PCI_128MB_SIZE) {
641 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
642 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
643 SECOND_PAGE_GROUP_SIZE);
644 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
645 THIRD_PAGE_GROUP_SIZE);
646 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
647 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
648 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
649 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
650 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
651 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
652 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
653 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
654 adapter->pci_write_immediate =
655 netxen_nic_pci_write_immediate_2M;
656 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
657 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
658 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
660 mem_ptr0 = pci_ioremap_bar(pdev, 0);
661 if (mem_ptr0 == NULL) {
662 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
667 adapter->ahw.ddr_mn_window = 0;
668 adapter->ahw.qdr_sn_window = 0;
670 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
672 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
674 adapter->ahw.ms_win_crb += (pci_func * 0x20);
676 adapter->ahw.ms_win_crb +=
677 0xA0 + ((pci_func - 4) * 0x10);
682 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
684 adapter->ahw.pci_base0 = mem_ptr0;
685 adapter->ahw.pci_len0 = pci_len0;
686 adapter->ahw.pci_base1 = mem_ptr1;
687 adapter->ahw.pci_base2 = mem_ptr2;
689 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
692 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
693 db_len = pci_resource_len(pdev, 4);
696 printk(KERN_ERR "%s: doorbell is disabled\n",
697 netxen_nic_driver_name);
702 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
704 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
705 netxen_nic_driver_name);
711 adapter->ahw.db_base = db_ptr;
712 adapter->ahw.db_len = db_len;
716 netxen_cleanup_pci_map(adapter);
721 netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
723 int val, err, first_boot;
724 struct pci_dev *pdev = adapter->pdev;
726 int first_driver = 0;
728 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
729 first_driver = (adapter->portnum == 0);
731 first_driver = (adapter->ahw.pci_func == 0);
736 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
738 err = netxen_check_hw_init(adapter, first_boot);
740 dev_err(&pdev->dev, "error in init HW init sequence\n");
745 netxen_request_firmware(adapter);
747 err = netxen_need_fw_reset(adapter);
751 if (first_boot != 0x55555555) {
752 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
753 netxen_pinit_from_rom(adapter, 0);
757 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
758 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
759 netxen_set_port_mode(adapter);
761 netxen_load_firmware(adapter);
763 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
765 /* Initialize multicast addr pool owners */
767 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
769 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
773 err = netxen_initialize_adapter_offload(adapter);
778 * Tell the hardware our version number.
780 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
781 | ((_NETXEN_NIC_LINUX_MINOR << 8))
782 | (_NETXEN_NIC_LINUX_SUBVERSION);
783 NXWR32(adapter, CRB_DRIVER_VERSION, val);
786 /* Handshake with the card before we register the devices. */
787 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
789 netxen_free_adapter_offload(adapter);
797 netxen_nic_request_irq(struct netxen_adapter *adapter)
799 irq_handler_t handler;
800 struct nx_host_sds_ring *sds_ring;
803 unsigned long flags = IRQF_SAMPLE_RANDOM;
804 struct net_device *netdev = adapter->netdev;
805 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
807 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
808 handler = netxen_msix_intr;
809 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
810 handler = netxen_msi_intr;
812 flags |= IRQF_SHARED;
813 handler = netxen_intr;
815 adapter->irq = netdev->irq;
817 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
818 sds_ring = &recv_ctx->sds_rings[ring];
819 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
820 err = request_irq(sds_ring->irq, handler,
821 flags, sds_ring->name, sds_ring);
830 netxen_nic_free_irq(struct netxen_adapter *adapter)
833 struct nx_host_sds_ring *sds_ring;
835 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
837 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
838 sds_ring = &recv_ctx->sds_rings[ring];
839 free_irq(sds_ring->irq, sds_ring);
844 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
848 err = adapter->init_port(adapter, adapter->physical_port);
850 printk(KERN_ERR "%s: Failed to initialize port %d\n",
851 netxen_nic_driver_name, adapter->portnum);
854 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
855 adapter->macaddr_set(adapter, netdev->dev_addr);
857 adapter->set_multi(netdev);
858 adapter->set_mtu(adapter, netdev->mtu);
860 adapter->ahw.linkup = 0;
862 if (adapter->max_sds_rings > 1)
863 netxen_config_rss(adapter, 1);
865 netxen_napi_enable(adapter);
867 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
868 netxen_linkevent_request(adapter, 1);
870 netxen_nic_set_link_parameters(adapter);
872 mod_timer(&adapter->watchdog_timer, jiffies);
878 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
880 spin_lock(&adapter->tx_clean_lock);
881 netif_carrier_off(netdev);
882 netif_tx_disable(netdev);
884 if (adapter->stop_port)
885 adapter->stop_port(adapter);
887 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
888 netxen_p3_free_mac_list(adapter);
890 netxen_napi_disable(adapter);
892 netxen_release_tx_buffers(adapter);
893 spin_unlock(&adapter->tx_clean_lock);
895 del_timer_sync(&adapter->watchdog_timer);
900 netxen_nic_attach(struct netxen_adapter *adapter)
902 struct net_device *netdev = adapter->netdev;
903 struct pci_dev *pdev = adapter->pdev;
905 struct nx_host_rds_ring *rds_ring;
906 struct nx_host_tx_ring *tx_ring;
908 err = netxen_init_firmware(adapter);
912 err = netxen_napi_add(adapter, netdev);
916 if (adapter->fw_major < 4)
917 adapter->max_rds_rings = 3;
919 adapter->max_rds_rings = 2;
921 err = netxen_alloc_sw_resources(adapter);
923 printk(KERN_ERR "%s: Error in setting sw resources\n",
928 netxen_nic_clear_stats(adapter);
930 err = netxen_alloc_hw_resources(adapter);
932 printk(KERN_ERR "%s: Error in setting hw resources\n",
934 goto err_out_free_sw;
937 if (adapter->fw_major < 4) {
938 tx_ring = adapter->tx_ring;
939 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
940 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
942 tx_ring->producer = 0;
943 tx_ring->sw_consumer = 0;
945 netxen_nic_update_cmd_producer(adapter, tx_ring);
946 netxen_nic_update_cmd_consumer(adapter, tx_ring);
949 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
950 rds_ring = &adapter->recv_ctx.rds_rings[ring];
951 netxen_post_rx_buffers(adapter, ring, rds_ring);
954 err = netxen_nic_request_irq(adapter);
956 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
958 goto err_out_free_rxbuf;
961 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
965 netxen_release_rx_buffers(adapter);
966 netxen_free_hw_resources(adapter);
968 netxen_free_sw_resources(adapter);
973 netxen_nic_detach(struct netxen_adapter *adapter)
975 netxen_free_hw_resources(adapter);
976 netxen_release_rx_buffers(adapter);
977 netxen_nic_free_irq(adapter);
978 netxen_napi_del(adapter);
979 netxen_free_sw_resources(adapter);
985 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
987 struct net_device *netdev = NULL;
988 struct netxen_adapter *adapter = NULL;
990 int pci_func_id = PCI_FUNC(pdev->devfn);
993 if (pdev->class != 0x020000) {
994 printk(KERN_DEBUG "NetXen function %d, class %x will not "
995 "be enabled.\n",pci_func_id, pdev->class);
999 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1000 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
1001 "will not be enabled.\n",
1002 NX_P3_A0, NX_P3_B1);
1006 if ((err = pci_enable_device(pdev)))
1009 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1011 goto err_out_disable_pdev;
1014 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1015 goto err_out_disable_pdev;
1017 pci_set_master(pdev);
1019 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1021 printk(KERN_ERR"%s: Failed to allocate memory for the "
1022 "device block.Check system memory resource"
1023 " usage.\n", netxen_nic_driver_name);
1024 goto err_out_free_res;
1027 SET_NETDEV_DEV(netdev, &pdev->dev);
1029 adapter = netdev_priv(netdev);
1030 adapter->netdev = netdev;
1031 adapter->pdev = pdev;
1032 adapter->ahw.pci_func = pci_func_id;
1034 revision_id = pdev->revision;
1035 adapter->ahw.revision_id = revision_id;
1037 err = nx_set_dma_mask(adapter);
1039 goto err_out_free_netdev;
1041 rwlock_init(&adapter->adapter_lock);
1042 spin_lock_init(&adapter->tx_clean_lock);
1043 INIT_LIST_HEAD(&adapter->mac_list);
1045 err = netxen_setup_pci_map(adapter);
1047 goto err_out_free_netdev;
1049 /* This will be reset for mezz cards */
1050 adapter->portnum = pci_func_id;
1051 adapter->rx_csum = 1;
1052 adapter->mc_enabled = 0;
1053 if (NX_IS_REVISION_P3(revision_id))
1054 adapter->max_mc_count = 38;
1056 adapter->max_mc_count = 16;
1058 netdev->netdev_ops = &netxen_netdev_ops;
1059 netdev->watchdog_timeo = 2*HZ;
1061 netxen_nic_change_mtu(netdev, netdev->mtu);
1063 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1065 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1066 netdev->features |= (NETIF_F_GRO);
1067 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1069 if (NX_IS_REVISION_P3(revision_id)) {
1070 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1071 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1074 if (adapter->pci_using_dac) {
1075 netdev->features |= NETIF_F_HIGHDMA;
1076 netdev->vlan_features |= NETIF_F_HIGHDMA;
1079 if (netxen_nic_get_board_info(adapter) != 0) {
1080 printk("%s: Error getting board config info.\n",
1081 netxen_nic_driver_name);
1083 goto err_out_iounmap;
1086 netxen_initialize_adapter_ops(adapter);
1088 /* Mezz cards have PCI function 0,2,3 enabled */
1089 switch (adapter->ahw.board_type) {
1090 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1091 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1092 if (pci_func_id >= 2)
1093 adapter->portnum = pci_func_id - 2;
1099 err = netxen_start_firmware(adapter, 1);
1101 goto err_out_iounmap;
1103 nx_update_dma_mask(adapter);
1105 netxen_nic_get_firmware_info(adapter);
1108 * See if the firmware gave us a virtual-physical port mapping.
1110 adapter->physical_port = adapter->portnum;
1111 if (adapter->fw_major < 4) {
1112 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1113 if (i != 0x55555555)
1114 adapter->physical_port = i;
1117 netxen_check_options(adapter);
1119 netxen_setup_intr(adapter);
1121 netdev->irq = adapter->msix_entries[0].vector;
1123 init_timer(&adapter->watchdog_timer);
1124 adapter->watchdog_timer.function = &netxen_watchdog;
1125 adapter->watchdog_timer.data = (unsigned long)adapter;
1126 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1127 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1129 err = netxen_read_mac_addr(adapter);
1131 dev_warn(&pdev->dev, "failed to read mac addr\n");
1133 netif_carrier_off(netdev);
1134 netif_stop_queue(netdev);
1136 if ((err = register_netdev(netdev))) {
1137 printk(KERN_ERR "%s: register_netdev failed port #%d"
1138 " aborting\n", netxen_nic_driver_name,
1141 goto err_out_disable_msi;
1144 pci_set_drvdata(pdev, adapter);
1146 switch (adapter->ahw.port_type) {
1147 case NETXEN_NIC_GBE:
1148 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1149 adapter->netdev->name);
1151 case NETXEN_NIC_XGBE:
1152 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1153 adapter->netdev->name);
1159 err_out_disable_msi:
1160 netxen_teardown_intr(adapter);
1162 netxen_free_adapter_offload(adapter);
1165 netxen_cleanup_pci_map(adapter);
1167 err_out_free_netdev:
1168 free_netdev(netdev);
1171 pci_release_regions(pdev);
1173 err_out_disable_pdev:
1174 pci_set_drvdata(pdev, NULL);
1175 pci_disable_device(pdev);
1179 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1181 struct netxen_adapter *adapter;
1182 struct net_device *netdev;
1184 adapter = pci_get_drvdata(pdev);
1185 if (adapter == NULL)
1188 netdev = adapter->netdev;
1190 unregister_netdev(netdev);
1192 cancel_work_sync(&adapter->watchdog_task);
1193 cancel_work_sync(&adapter->tx_timeout_task);
1195 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1196 netxen_nic_detach(adapter);
1199 if (adapter->portnum == 0)
1200 netxen_free_adapter_offload(adapter);
1202 netxen_teardown_intr(adapter);
1204 netxen_cleanup_pci_map(adapter);
1206 netxen_release_firmware(adapter);
1208 pci_release_regions(pdev);
1209 pci_disable_device(pdev);
1210 pci_set_drvdata(pdev, NULL);
1212 free_netdev(netdev);
1217 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1220 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1221 struct net_device *netdev = adapter->netdev;
1223 netif_device_detach(netdev);
1225 if (netif_running(netdev))
1226 netxen_nic_down(adapter, netdev);
1228 cancel_work_sync(&adapter->watchdog_task);
1229 cancel_work_sync(&adapter->tx_timeout_task);
1231 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1232 netxen_nic_detach(adapter);
1234 pci_save_state(pdev);
1236 if (netxen_nic_wol_supported(adapter)) {
1237 pci_enable_wake(pdev, PCI_D3cold, 1);
1238 pci_enable_wake(pdev, PCI_D3hot, 1);
1241 pci_disable_device(pdev);
1242 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1248 netxen_nic_resume(struct pci_dev *pdev)
1250 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1251 struct net_device *netdev = adapter->netdev;
1254 pci_set_power_state(pdev, PCI_D0);
1255 pci_restore_state(pdev);
1257 err = pci_enable_device(pdev);
1261 adapter->curr_window = 255;
1263 err = netxen_start_firmware(adapter, 0);
1265 dev_err(&pdev->dev, "failed to start firmware\n");
1269 if (netif_running(netdev)) {
1270 err = netxen_nic_attach(adapter);
1274 err = netxen_nic_up(adapter, netdev);
1278 netif_device_attach(netdev);
1285 static int netxen_nic_open(struct net_device *netdev)
1287 struct netxen_adapter *adapter = netdev_priv(netdev);
1290 if (adapter->driver_mismatch)
1293 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1294 err = netxen_nic_attach(adapter);
1299 err = netxen_nic_up(adapter, netdev);
1303 netif_start_queue(netdev);
1308 netxen_nic_detach(adapter);
1313 * netxen_nic_close - Disables a network interface entry point
1315 static int netxen_nic_close(struct net_device *netdev)
1317 struct netxen_adapter *adapter = netdev_priv(netdev);
1319 netxen_nic_down(adapter, netdev);
1323 static bool netxen_tso_check(struct net_device *netdev,
1324 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1327 u8 opcode = TX_ETHER_PKT;
1328 __be16 protocol = skb->protocol;
1331 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1332 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1333 protocol = vh->h_vlan_encapsulated_proto;
1334 flags = FLAGS_VLAN_TAGGED;
1337 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1338 skb_shinfo(skb)->gso_size > 0) {
1340 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1341 desc->total_hdr_length =
1342 skb_transport_offset(skb) + tcp_hdrlen(skb);
1344 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1345 TX_TCP_LSO6 : TX_TCP_LSO;
1348 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1351 if (protocol == cpu_to_be16(ETH_P_IP)) {
1352 l4proto = ip_hdr(skb)->protocol;
1354 if (l4proto == IPPROTO_TCP)
1355 opcode = TX_TCP_PKT;
1356 else if(l4proto == IPPROTO_UDP)
1357 opcode = TX_UDP_PKT;
1358 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1359 l4proto = ipv6_hdr(skb)->nexthdr;
1361 if (l4proto == IPPROTO_TCP)
1362 opcode = TX_TCPV6_PKT;
1363 else if(l4proto == IPPROTO_UDP)
1364 opcode = TX_UDPV6_PKT;
1367 desc->tcp_hdr_offset = skb_transport_offset(skb);
1368 desc->ip_hdr_offset = skb_network_offset(skb);
1369 netxen_set_tx_flags_opcode(desc, flags, opcode);
1374 netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1375 struct netxen_cmd_buffer *pbuf, int last)
1378 struct netxen_skb_frag *buffrag;
1380 buffrag = &pbuf->frag_array[0];
1381 pci_unmap_single(pdev, buffrag->dma,
1382 buffrag->length, PCI_DMA_TODEVICE);
1384 for (k = 1; k < last; k++) {
1385 buffrag = &pbuf->frag_array[k];
1386 pci_unmap_page(pdev, buffrag->dma,
1387 buffrag->length, PCI_DMA_TODEVICE);
1392 netxen_clear_cmddesc(u64 *desc)
1395 for (i = 0; i < 8; i++)
1400 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1402 struct netxen_adapter *adapter = netdev_priv(netdev);
1403 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1404 unsigned int first_seg_len = skb->len - skb->data_len;
1405 struct netxen_cmd_buffer *pbuf;
1406 struct netxen_skb_frag *buffrag;
1407 struct cmd_desc_type0 *hwdesc;
1408 struct pci_dev *pdev = adapter->pdev;
1409 dma_addr_t temp_dma;
1413 int frag_count, no_of_desc;
1414 u32 num_txd = tx_ring->num_desc;
1415 bool is_tso = false;
1417 frag_count = skb_shinfo(skb)->nr_frags + 1;
1419 /* 4 fragments per cmd des */
1420 no_of_desc = (frag_count + 3) >> 2;
1422 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
1423 netif_stop_queue(netdev);
1424 return NETDEV_TX_BUSY;
1427 producer = tx_ring->producer;
1429 hwdesc = &tx_ring->desc_head[producer];
1430 netxen_clear_cmddesc((u64 *)hwdesc);
1431 pbuf = &tx_ring->cmd_buf_arr[producer];
1433 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1436 pbuf->frag_count = frag_count;
1437 buffrag = &pbuf->frag_array[0];
1438 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
1440 if (pci_dma_mapping_error(pdev, temp_dma))
1443 buffrag->dma = temp_dma;
1444 buffrag->length = first_seg_len;
1445 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1446 netxen_set_tx_port(hwdesc, adapter->portnum);
1448 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
1449 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1451 for (i = 1, k = 1; i < frag_count; i++, k++) {
1452 struct skb_frag_struct *frag;
1454 unsigned long offset;
1456 /* move to next desc. if there is a need */
1457 if ((i & 0x3) == 0) {
1459 producer = get_next_index(producer, num_txd);
1460 hwdesc = &tx_ring->desc_head[producer];
1461 netxen_clear_cmddesc((u64 *)hwdesc);
1462 pbuf = &tx_ring->cmd_buf_arr[producer];
1465 frag = &skb_shinfo(skb)->frags[i - 1];
1467 offset = frag->page_offset;
1470 temp_dma = pci_map_page(pdev, frag->page, offset,
1471 len, PCI_DMA_TODEVICE);
1472 if (pci_dma_mapping_error(pdev, temp_dma)) {
1473 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1478 buffrag->dma = temp_dma;
1479 buffrag->length = temp_len;
1481 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
1484 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1487 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1490 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1493 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1498 producer = get_next_index(producer, num_txd);
1500 /* For LSO, we need to copy the MAC/IP/TCP headers into
1501 * the descriptor ring
1504 int hdr_len, first_hdr_len, more_hdr;
1505 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1506 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1507 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1510 first_hdr_len = hdr_len;
1513 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1514 hwdesc = &tx_ring->desc_head[producer];
1515 pbuf = &tx_ring->cmd_buf_arr[producer];
1518 /* copy the first 64 bytes */
1519 memcpy(((void *)hwdesc) + 2,
1520 (void *)(skb->data), first_hdr_len);
1521 producer = get_next_index(producer, num_txd);
1524 hwdesc = &tx_ring->desc_head[producer];
1525 pbuf = &tx_ring->cmd_buf_arr[producer];
1527 /* copy the next 64 bytes - should be enough except
1528 * for pathological case
1530 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1534 producer = get_next_index(producer, num_txd);
1538 tx_ring->producer = producer;
1539 adapter->stats.txbytes += skb->len;
1541 netxen_nic_update_cmd_producer(adapter, tx_ring);
1543 adapter->stats.xmitcalled++;
1545 return NETDEV_TX_OK;
1548 adapter->stats.txdropped++;
1549 dev_kfree_skb_any(skb);
1550 return NETDEV_TX_OK;
1553 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1555 struct net_device *netdev = adapter->netdev;
1556 uint32_t temp, temp_state, temp_val;
1559 temp = NXRD32(adapter, CRB_TEMP_STATE);
1561 temp_state = nx_get_temp_state(temp);
1562 temp_val = nx_get_temp_val(temp);
1564 if (temp_state == NX_TEMP_PANIC) {
1566 "%s: Device temperature %d degrees C exceeds"
1567 " maximum allowed. Hardware has been shut down.\n",
1568 netdev->name, temp_val);
1570 } else if (temp_state == NX_TEMP_WARN) {
1571 if (adapter->temp == NX_TEMP_NORMAL) {
1573 "%s: Device temperature %d degrees C "
1574 "exceeds operating range."
1575 " Immediate action needed.\n",
1576 netdev->name, temp_val);
1579 if (adapter->temp == NX_TEMP_WARN) {
1581 "%s: Device temperature is now %d degrees C"
1582 " in normal range.\n", netdev->name,
1586 adapter->temp = temp_state;
1590 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1592 struct net_device *netdev = adapter->netdev;
1594 if (adapter->ahw.linkup && !linkup) {
1595 printk(KERN_INFO "%s: %s NIC Link is down\n",
1596 netxen_nic_driver_name, netdev->name);
1597 adapter->ahw.linkup = 0;
1598 if (netif_running(netdev)) {
1599 netif_carrier_off(netdev);
1600 netif_stop_queue(netdev);
1602 adapter->link_changed = !adapter->has_link_events;
1603 } else if (!adapter->ahw.linkup && linkup) {
1604 printk(KERN_INFO "%s: %s NIC Link is up\n",
1605 netxen_nic_driver_name, netdev->name);
1606 adapter->ahw.linkup = 1;
1607 if (netif_running(netdev)) {
1608 netif_carrier_on(netdev);
1609 netif_wake_queue(netdev);
1611 adapter->link_changed = !adapter->has_link_events;
1615 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1617 u32 val, port, linkup;
1619 port = adapter->physical_port;
1621 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1622 val = NXRD32(adapter, CRB_XG_STATE_P3);
1623 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1624 linkup = (val == XG_LINK_UP_P3);
1626 val = NXRD32(adapter, CRB_XG_STATE);
1627 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1628 linkup = (val >> port) & 1;
1630 val = (val >> port*8) & 0xff;
1631 linkup = (val == XG_LINK_UP);
1635 netxen_advert_link_change(adapter, linkup);
1638 static void netxen_nic_thermal_shutdown(struct netxen_adapter *adapter)
1640 struct net_device *netdev = adapter->netdev;
1642 netif_device_detach(netdev);
1643 netxen_nic_down(adapter, netdev);
1644 netxen_nic_detach(adapter);
1647 static void netxen_watchdog(unsigned long v)
1649 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1651 if (netxen_nic_check_temp(adapter))
1654 if (!adapter->has_link_events) {
1655 netxen_nic_handle_phy_intr(adapter);
1657 if (adapter->link_changed)
1661 if (netif_running(adapter->netdev))
1662 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1667 schedule_work(&adapter->watchdog_task);
1670 void netxen_watchdog_task(struct work_struct *work)
1672 struct netxen_adapter *adapter =
1673 container_of(work, struct netxen_adapter, watchdog_task);
1675 if (adapter->temp == NX_TEMP_PANIC) {
1676 netxen_nic_thermal_shutdown(adapter);
1680 if (adapter->link_changed)
1681 netxen_nic_set_link_parameters(adapter);
1683 if (netif_running(adapter->netdev))
1684 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1687 static void netxen_tx_timeout(struct net_device *netdev)
1689 struct netxen_adapter *adapter = netdev_priv(netdev);
1690 schedule_work(&adapter->tx_timeout_task);
1693 static void netxen_tx_timeout_task(struct work_struct *work)
1695 struct netxen_adapter *adapter =
1696 container_of(work, struct netxen_adapter, tx_timeout_task);
1698 if (!netif_running(adapter->netdev))
1701 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1702 netxen_nic_driver_name, adapter->netdev->name);
1704 netxen_napi_disable(adapter);
1706 adapter->netdev->trans_start = jiffies;
1708 netxen_napi_enable(adapter);
1709 netif_wake_queue(adapter->netdev);
1712 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1714 struct netxen_adapter *adapter = netdev_priv(netdev);
1715 struct net_device_stats *stats = &adapter->net_stats;
1717 memset(stats, 0, sizeof(*stats));
1719 stats->rx_packets = adapter->stats.no_rcv;
1720 stats->tx_packets = adapter->stats.xmitfinished;
1721 stats->rx_bytes = adapter->stats.rxbytes;
1722 stats->tx_bytes = adapter->stats.txbytes;
1723 stats->rx_dropped = adapter->stats.rxdropped;
1724 stats->tx_dropped = adapter->stats.txdropped;
1729 static irqreturn_t netxen_intr(int irq, void *data)
1731 struct nx_host_sds_ring *sds_ring = data;
1732 struct netxen_adapter *adapter = sds_ring->adapter;
1735 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1737 if (!(status & adapter->legacy_intr.int_vec_bit))
1740 if (adapter->ahw.revision_id >= NX_P3_B1) {
1741 /* check interrupt state machine, to be sure */
1742 status = adapter->pci_read_immediate(adapter,
1744 if (!ISR_LEGACY_INT_TRIGGERED(status))
1748 unsigned long our_int = 0;
1750 our_int = NXRD32(adapter, CRB_INT_VECTOR);
1752 /* not our interrupt */
1753 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1756 /* claim interrupt */
1757 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
1760 /* clear interrupt */
1761 if (adapter->fw_major < 4)
1762 netxen_nic_disable_int(sds_ring);
1764 adapter->pci_write_immediate(adapter,
1765 adapter->legacy_intr.tgt_status_reg,
1767 /* read twice to ensure write is flushed */
1768 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1769 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1771 napi_schedule(&sds_ring->napi);
1776 static irqreturn_t netxen_msi_intr(int irq, void *data)
1778 struct nx_host_sds_ring *sds_ring = data;
1779 struct netxen_adapter *adapter = sds_ring->adapter;
1781 /* clear interrupt */
1782 adapter->pci_write_immediate(adapter,
1783 adapter->msi_tgt_status, 0xffffffff);
1785 napi_schedule(&sds_ring->napi);
1789 static irqreturn_t netxen_msix_intr(int irq, void *data)
1791 struct nx_host_sds_ring *sds_ring = data;
1793 napi_schedule(&sds_ring->napi);
1797 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1799 struct nx_host_sds_ring *sds_ring =
1800 container_of(napi, struct nx_host_sds_ring, napi);
1802 struct netxen_adapter *adapter = sds_ring->adapter;
1807 tx_complete = netxen_process_cmd_ring(adapter);
1809 work_done = netxen_process_rcv_ring(sds_ring, budget);
1811 if ((work_done < budget) && tx_complete) {
1812 napi_complete(&sds_ring->napi);
1813 if (netif_running(adapter->netdev))
1814 netxen_nic_enable_int(sds_ring);
1820 #ifdef CONFIG_NET_POLL_CONTROLLER
1821 static void netxen_nic_poll_controller(struct net_device *netdev)
1823 struct netxen_adapter *adapter = netdev_priv(netdev);
1824 disable_irq(adapter->irq);
1825 netxen_intr(adapter->irq, adapter);
1826 enable_irq(adapter->irq);
1830 static struct pci_driver netxen_driver = {
1831 .name = netxen_nic_driver_name,
1832 .id_table = netxen_pci_tbl,
1833 .probe = netxen_nic_probe,
1834 .remove = __devexit_p(netxen_nic_remove),
1836 .suspend = netxen_nic_suspend,
1837 .resume = netxen_nic_resume
1841 /* Driver Registration on NetXen card */
1843 static int __init netxen_init_module(void)
1845 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1847 return pci_register_driver(&netxen_driver);
1850 module_init(netxen_init_module);
1852 static void __exit netxen_exit_module(void)
1854 pci_unregister_driver(&netxen_driver);
1857 module_exit(netxen_exit_module);