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>
42 #include <linux/inetdevice.h>
44 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
45 MODULE_LICENSE("GPL");
46 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
48 char netxen_nic_driver_name[] = "netxen_nic";
49 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
50 NETXEN_NIC_LINUX_VERSIONID;
52 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
54 /* Default to restricted 1G auto-neg mode */
55 static int wol_port_mode = 5;
57 static int use_msi = 1;
59 static int use_msi_x = 1;
61 /* Local functions to NetXen NIC driver */
62 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
63 const struct pci_device_id *ent);
64 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
65 static int netxen_nic_open(struct net_device *netdev);
66 static int netxen_nic_close(struct net_device *netdev);
67 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
68 static void netxen_tx_timeout(struct net_device *netdev);
69 static void netxen_tx_timeout_task(struct work_struct *work);
70 static void netxen_watchdog(unsigned long);
71 static int netxen_nic_poll(struct napi_struct *napi, int budget);
72 #ifdef CONFIG_NET_POLL_CONTROLLER
73 static void netxen_nic_poll_controller(struct net_device *netdev);
75 static irqreturn_t netxen_intr(int irq, void *data);
76 static irqreturn_t netxen_msi_intr(int irq, void *data);
77 static irqreturn_t netxen_msix_intr(int irq, void *data);
79 /* PCI Device ID Table */
80 #define ENTRY(device) \
81 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
82 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
84 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
85 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
86 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
87 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
88 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
89 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
90 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
91 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
92 ENTRY(PCI_DEVICE_ID_NX3031),
96 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
98 static struct workqueue_struct *netxen_workq;
99 #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
100 #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
102 static void netxen_watchdog(unsigned long);
104 static uint32_t crb_cmd_producer[4] = {
105 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
106 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
110 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
111 struct nx_host_tx_ring *tx_ring)
113 NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
115 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
116 netif_stop_queue(adapter->netdev);
121 static uint32_t crb_cmd_consumer[4] = {
122 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
123 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
127 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
128 struct nx_host_tx_ring *tx_ring)
130 NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
133 static uint32_t msi_tgt_status[8] = {
134 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
135 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
136 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
137 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
140 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
142 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
144 struct netxen_adapter *adapter = sds_ring->adapter;
146 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
149 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
151 struct netxen_adapter *adapter = sds_ring->adapter;
153 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
155 if (!NETXEN_IS_MSI_FAMILY(adapter))
156 adapter->pci_write_immediate(adapter,
157 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
161 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
163 int size = sizeof(struct nx_host_sds_ring) * count;
165 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
167 return (recv_ctx->sds_rings == NULL);
171 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
173 if (recv_ctx->sds_rings != NULL)
174 kfree(recv_ctx->sds_rings);
178 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
181 struct nx_host_sds_ring *sds_ring;
182 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
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_synchronize(&sds_ring->napi);
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 = NXRD32(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 adapter->msix_supported = 0;
294 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
295 adapter->msix_supported = !!use_msi_x;
296 adapter->rss_supported = !!use_msi_x;
297 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
298 switch (adapter->ahw.board_type) {
299 case NETXEN_BRDTYPE_P2_SB31_10G:
300 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
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, int count)
414 for (i = 0; i < count; 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;
501 if (adapter->rss_supported) {
502 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
503 MSIX_ENTRIES_PER_ADAPTER : 2;
507 adapter->max_sds_rings = 1;
509 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
511 if (adapter->ahw.revision_id >= NX_P3_B0)
512 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
514 legacy_intrp = &legacy_intr[0];
515 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
516 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
517 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
518 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
520 netxen_set_msix_bit(pdev, 0);
522 if (adapter->msix_supported) {
524 netxen_init_msix_entries(adapter, num_msix);
525 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
527 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
528 netxen_set_msix_bit(pdev, 1);
530 if (adapter->rss_supported)
531 adapter->max_sds_rings = num_msix;
533 dev_info(&pdev->dev, "using msi-x interrupts\n");
538 pci_disable_msix(pdev);
540 /* fall through for msi */
543 if (use_msi && !pci_enable_msi(pdev)) {
544 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
545 adapter->msi_tgt_status =
546 msi_tgt_status[adapter->ahw.pci_func];
547 dev_info(&pdev->dev, "using msi interrupts\n");
548 adapter->msix_entries[0].vector = pdev->irq;
552 dev_info(&pdev->dev, "using legacy interrupts\n");
553 adapter->msix_entries[0].vector = pdev->irq;
557 netxen_teardown_intr(struct netxen_adapter *adapter)
559 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
560 pci_disable_msix(adapter->pdev);
561 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
562 pci_disable_msi(adapter->pdev);
566 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
568 if (adapter->ahw.db_base != NULL)
569 iounmap(adapter->ahw.db_base);
570 if (adapter->ahw.pci_base0 != NULL)
571 iounmap(adapter->ahw.pci_base0);
572 if (adapter->ahw.pci_base1 != NULL)
573 iounmap(adapter->ahw.pci_base1);
574 if (adapter->ahw.pci_base2 != NULL)
575 iounmap(adapter->ahw.pci_base2);
579 netxen_setup_pci_map(struct netxen_adapter *adapter)
581 void __iomem *mem_ptr0 = NULL;
582 void __iomem *mem_ptr1 = NULL;
583 void __iomem *mem_ptr2 = NULL;
584 void __iomem *db_ptr = NULL;
586 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
588 struct pci_dev *pdev = adapter->pdev;
589 int pci_func = adapter->ahw.pci_func;
594 * Set the CRB window to invalid. If any register in window 0 is
595 * accessed it should set the window to 0 and then reset it to 1.
597 adapter->curr_window = 255;
598 adapter->ahw.qdr_sn_window = -1;
599 adapter->ahw.ddr_mn_window = -1;
601 /* remap phys address */
602 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
603 mem_len = pci_resource_len(pdev, 0);
606 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
607 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
608 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
609 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
610 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
611 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
612 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
614 /* 128 Meg of memory */
615 if (mem_len == NETXEN_PCI_128MB_SIZE) {
616 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
617 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
618 SECOND_PAGE_GROUP_SIZE);
619 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
620 THIRD_PAGE_GROUP_SIZE);
621 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
622 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
623 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
624 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
625 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
626 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
627 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
628 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
629 adapter->pci_write_immediate =
630 netxen_nic_pci_write_immediate_2M;
631 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
632 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
633 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
635 mem_ptr0 = pci_ioremap_bar(pdev, 0);
636 if (mem_ptr0 == NULL) {
637 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
642 adapter->ahw.ddr_mn_window = 0;
643 adapter->ahw.qdr_sn_window = 0;
645 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
647 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
649 adapter->ahw.ms_win_crb += (pci_func * 0x20);
651 adapter->ahw.ms_win_crb +=
652 0xA0 + ((pci_func - 4) * 0x10);
657 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
659 adapter->ahw.pci_base0 = mem_ptr0;
660 adapter->ahw.pci_len0 = pci_len0;
661 adapter->ahw.pci_base1 = mem_ptr1;
662 adapter->ahw.pci_base2 = mem_ptr2;
664 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
667 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
668 db_len = pci_resource_len(pdev, 4);
671 printk(KERN_ERR "%s: doorbell is disabled\n",
672 netxen_nic_driver_name);
677 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
679 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
680 netxen_nic_driver_name);
686 adapter->ahw.db_base = db_ptr;
687 adapter->ahw.db_len = db_len;
691 netxen_cleanup_pci_map(adapter);
696 netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
698 int val, err, first_boot;
699 struct pci_dev *pdev = adapter->pdev;
701 int first_driver = 0;
703 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
704 first_driver = (adapter->portnum == 0);
706 first_driver = (adapter->ahw.pci_func == 0);
711 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
713 err = netxen_check_hw_init(adapter, first_boot);
715 dev_err(&pdev->dev, "error in init HW init sequence\n");
720 netxen_request_firmware(adapter);
722 err = netxen_need_fw_reset(adapter);
726 if (first_boot != 0x55555555) {
727 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
728 netxen_pinit_from_rom(adapter, 0);
732 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
733 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
734 netxen_set_port_mode(adapter);
736 netxen_load_firmware(adapter);
738 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
740 /* Initialize multicast addr pool owners */
742 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
744 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
748 err = netxen_initialize_adapter_offload(adapter);
753 * Tell the hardware our version number.
755 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
756 | ((_NETXEN_NIC_LINUX_MINOR << 8))
757 | (_NETXEN_NIC_LINUX_SUBVERSION);
758 NXWR32(adapter, CRB_DRIVER_VERSION, val);
761 /* Handshake with the card before we register the devices. */
762 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
764 netxen_free_adapter_offload(adapter);
768 nx_update_dma_mask(adapter);
770 netxen_nic_get_firmware_info(adapter);
776 netxen_nic_request_irq(struct netxen_adapter *adapter)
778 irq_handler_t handler;
779 struct nx_host_sds_ring *sds_ring;
782 unsigned long flags = IRQF_SAMPLE_RANDOM;
783 struct net_device *netdev = adapter->netdev;
784 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
786 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
787 handler = netxen_msix_intr;
788 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
789 handler = netxen_msi_intr;
791 flags |= IRQF_SHARED;
792 handler = netxen_intr;
794 adapter->irq = netdev->irq;
796 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
797 sds_ring = &recv_ctx->sds_rings[ring];
798 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
799 err = request_irq(sds_ring->irq, handler,
800 flags, sds_ring->name, sds_ring);
809 netxen_nic_free_irq(struct netxen_adapter *adapter)
812 struct nx_host_sds_ring *sds_ring;
814 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
816 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
817 sds_ring = &recv_ctx->sds_rings[ring];
818 free_irq(sds_ring->irq, sds_ring);
823 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
825 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
826 adapter->coal.normal.data.rx_time_us =
827 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
828 adapter->coal.normal.data.rx_packets =
829 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
830 adapter->coal.normal.data.tx_time_us =
831 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
832 adapter->coal.normal.data.tx_packets =
833 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
837 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
841 err = adapter->init_port(adapter, adapter->physical_port);
843 printk(KERN_ERR "%s: Failed to initialize port %d\n",
844 netxen_nic_driver_name, adapter->portnum);
847 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
848 adapter->macaddr_set(adapter, netdev->dev_addr);
850 adapter->set_multi(netdev);
851 adapter->set_mtu(adapter, netdev->mtu);
853 adapter->ahw.linkup = 0;
855 if (adapter->max_sds_rings > 1)
856 netxen_config_rss(adapter, 1);
858 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
859 netxen_config_intr_coalesce(adapter);
861 netxen_napi_enable(adapter);
863 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
864 netxen_linkevent_request(adapter, 1);
866 netxen_nic_set_link_parameters(adapter);
868 mod_timer(&adapter->watchdog_timer, jiffies);
874 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
876 spin_lock(&adapter->tx_clean_lock);
877 netif_carrier_off(netdev);
878 netif_tx_disable(netdev);
880 if (adapter->stop_port)
881 adapter->stop_port(adapter);
883 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
884 netxen_p3_free_mac_list(adapter);
886 netxen_napi_disable(adapter);
888 netxen_release_tx_buffers(adapter);
889 spin_unlock(&adapter->tx_clean_lock);
891 del_timer_sync(&adapter->watchdog_timer);
892 FLUSH_SCHEDULED_WORK();
897 netxen_nic_attach(struct netxen_adapter *adapter)
899 struct net_device *netdev = adapter->netdev;
900 struct pci_dev *pdev = adapter->pdev;
902 struct nx_host_rds_ring *rds_ring;
903 struct nx_host_tx_ring *tx_ring;
905 err = netxen_init_firmware(adapter);
907 printk(KERN_ERR "Failed to init firmware\n");
911 if (adapter->fw_major < 4)
912 adapter->max_rds_rings = 3;
914 adapter->max_rds_rings = 2;
916 err = netxen_alloc_sw_resources(adapter);
918 printk(KERN_ERR "%s: Error in setting sw resources\n",
923 netxen_nic_clear_stats(adapter);
925 err = netxen_alloc_hw_resources(adapter);
927 printk(KERN_ERR "%s: Error in setting hw resources\n",
929 goto err_out_free_sw;
932 if (adapter->fw_major < 4) {
933 tx_ring = adapter->tx_ring;
934 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
935 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
937 tx_ring->producer = 0;
938 tx_ring->sw_consumer = 0;
940 netxen_nic_update_cmd_producer(adapter, tx_ring);
941 netxen_nic_update_cmd_consumer(adapter, tx_ring);
944 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
945 rds_ring = &adapter->recv_ctx.rds_rings[ring];
946 netxen_post_rx_buffers(adapter, ring, rds_ring);
949 err = netxen_nic_request_irq(adapter);
951 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
953 goto err_out_free_rxbuf;
956 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
957 netxen_nic_init_coalesce_defaults(adapter);
959 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
963 netxen_release_rx_buffers(adapter);
964 netxen_free_hw_resources(adapter);
966 netxen_free_sw_resources(adapter);
971 netxen_nic_detach(struct netxen_adapter *adapter)
973 netxen_free_hw_resources(adapter);
974 netxen_release_rx_buffers(adapter);
975 netxen_nic_free_irq(adapter);
976 netxen_free_sw_resources(adapter);
982 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
984 struct net_device *netdev = NULL;
985 struct netxen_adapter *adapter = NULL;
987 int pci_func_id = PCI_FUNC(pdev->devfn);
990 if (pdev->class != 0x020000) {
991 printk(KERN_DEBUG "NetXen function %d, class %x will not "
992 "be enabled.\n",pci_func_id, pdev->class);
996 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
997 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
998 "will not be enabled.\n",
1003 if ((err = pci_enable_device(pdev)))
1006 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1008 goto err_out_disable_pdev;
1011 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1012 goto err_out_disable_pdev;
1014 pci_set_master(pdev);
1016 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1018 printk(KERN_ERR"%s: Failed to allocate memory for the "
1019 "device block.Check system memory resource"
1020 " usage.\n", netxen_nic_driver_name);
1021 goto err_out_free_res;
1024 SET_NETDEV_DEV(netdev, &pdev->dev);
1026 adapter = netdev_priv(netdev);
1027 adapter->netdev = netdev;
1028 adapter->pdev = pdev;
1029 adapter->ahw.pci_func = pci_func_id;
1031 revision_id = pdev->revision;
1032 adapter->ahw.revision_id = revision_id;
1034 err = nx_set_dma_mask(adapter, revision_id);
1036 goto err_out_free_netdev;
1038 rwlock_init(&adapter->adapter_lock);
1039 spin_lock_init(&adapter->tx_clean_lock);
1040 INIT_LIST_HEAD(&adapter->mac_list);
1042 err = netxen_setup_pci_map(adapter);
1044 goto err_out_free_netdev;
1046 /* This will be reset for mezz cards */
1047 adapter->portnum = pci_func_id;
1048 adapter->rx_csum = 1;
1049 adapter->mc_enabled = 0;
1050 if (NX_IS_REVISION_P3(revision_id))
1051 adapter->max_mc_count = 38;
1053 adapter->max_mc_count = 16;
1055 netdev->netdev_ops = &netxen_netdev_ops;
1056 netdev->watchdog_timeo = 2*HZ;
1058 netxen_nic_change_mtu(netdev, netdev->mtu);
1060 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1062 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1063 netdev->features |= (NETIF_F_GRO);
1064 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1066 if (NX_IS_REVISION_P3(revision_id)) {
1067 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1068 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1071 if (adapter->pci_using_dac) {
1072 netdev->features |= NETIF_F_HIGHDMA;
1073 netdev->vlan_features |= NETIF_F_HIGHDMA;
1076 if (netxen_nic_get_board_info(adapter) != 0) {
1077 printk("%s: Error getting board config info.\n",
1078 netxen_nic_driver_name);
1080 goto err_out_iounmap;
1083 netxen_initialize_adapter_ops(adapter);
1085 /* Mezz cards have PCI function 0,2,3 enabled */
1086 switch (adapter->ahw.board_type) {
1087 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1088 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1089 if (pci_func_id >= 2)
1090 adapter->portnum = pci_func_id - 2;
1096 err = netxen_start_firmware(adapter, 1);
1098 goto err_out_iounmap;
1100 * See if the firmware gave us a virtual-physical port mapping.
1102 adapter->physical_port = adapter->portnum;
1103 if (adapter->fw_major < 4) {
1104 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1105 if (i != 0x55555555)
1106 adapter->physical_port = i;
1109 netxen_check_options(adapter);
1111 netxen_setup_intr(adapter);
1113 netdev->irq = adapter->msix_entries[0].vector;
1115 if (netxen_napi_add(adapter, netdev))
1116 goto err_out_disable_msi;
1118 init_timer(&adapter->watchdog_timer);
1119 adapter->watchdog_timer.function = &netxen_watchdog;
1120 adapter->watchdog_timer.data = (unsigned long)adapter;
1121 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1122 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1124 err = netxen_read_mac_addr(adapter);
1126 dev_warn(&pdev->dev, "failed to read mac addr\n");
1128 netif_carrier_off(netdev);
1129 netif_stop_queue(netdev);
1131 if ((err = register_netdev(netdev))) {
1132 printk(KERN_ERR "%s: register_netdev failed port #%d"
1133 " aborting\n", netxen_nic_driver_name,
1136 goto err_out_disable_msi;
1139 pci_set_drvdata(pdev, adapter);
1141 switch (adapter->ahw.port_type) {
1142 case NETXEN_NIC_GBE:
1143 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1144 adapter->netdev->name);
1146 case NETXEN_NIC_XGBE:
1147 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1148 adapter->netdev->name);
1154 err_out_disable_msi:
1155 netxen_teardown_intr(adapter);
1157 netxen_free_adapter_offload(adapter);
1160 netxen_cleanup_pci_map(adapter);
1162 err_out_free_netdev:
1163 free_netdev(netdev);
1166 pci_release_regions(pdev);
1168 err_out_disable_pdev:
1169 pci_set_drvdata(pdev, NULL);
1170 pci_disable_device(pdev);
1174 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1176 struct netxen_adapter *adapter;
1177 struct net_device *netdev;
1179 adapter = pci_get_drvdata(pdev);
1180 if (adapter == NULL)
1183 netdev = adapter->netdev;
1185 unregister_netdev(netdev);
1187 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1188 netxen_nic_detach(adapter);
1191 if (adapter->portnum == 0)
1192 netxen_free_adapter_offload(adapter);
1194 netxen_teardown_intr(adapter);
1195 netxen_free_sds_rings(&adapter->recv_ctx);
1197 netxen_cleanup_pci_map(adapter);
1199 netxen_release_firmware(adapter);
1201 pci_release_regions(pdev);
1202 pci_disable_device(pdev);
1203 pci_set_drvdata(pdev, NULL);
1205 free_netdev(netdev);
1210 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1213 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1214 struct net_device *netdev = adapter->netdev;
1216 netif_device_detach(netdev);
1218 if (netif_running(netdev))
1219 netxen_nic_down(adapter, netdev);
1221 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1222 netxen_nic_detach(adapter);
1224 pci_save_state(pdev);
1226 if (netxen_nic_wol_supported(adapter)) {
1227 pci_enable_wake(pdev, PCI_D3cold, 1);
1228 pci_enable_wake(pdev, PCI_D3hot, 1);
1231 pci_disable_device(pdev);
1232 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1238 netxen_nic_resume(struct pci_dev *pdev)
1240 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1241 struct net_device *netdev = adapter->netdev;
1244 pci_set_power_state(pdev, PCI_D0);
1245 pci_restore_state(pdev);
1247 err = pci_enable_device(pdev);
1251 adapter->curr_window = 255;
1253 err = netxen_start_firmware(adapter, 0);
1255 dev_err(&pdev->dev, "failed to start firmware\n");
1259 if (netif_running(netdev)) {
1260 err = netxen_nic_attach(adapter);
1264 err = netxen_nic_up(adapter, netdev);
1268 netif_device_attach(netdev);
1275 static int netxen_nic_open(struct net_device *netdev)
1277 struct netxen_adapter *adapter = netdev_priv(netdev);
1280 if (adapter->driver_mismatch)
1283 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
1284 err = netxen_nic_attach(adapter);
1289 err = netxen_nic_up(adapter, netdev);
1293 netif_start_queue(netdev);
1298 netxen_nic_detach(adapter);
1303 * netxen_nic_close - Disables a network interface entry point
1305 static int netxen_nic_close(struct net_device *netdev)
1307 struct netxen_adapter *adapter = netdev_priv(netdev);
1309 netxen_nic_down(adapter, netdev);
1313 static bool netxen_tso_check(struct net_device *netdev,
1314 struct cmd_desc_type0 *desc, struct sk_buff *skb)
1317 u8 opcode = TX_ETHER_PKT;
1318 __be16 protocol = skb->protocol;
1321 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1322 struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data;
1323 protocol = vh->h_vlan_encapsulated_proto;
1324 flags = FLAGS_VLAN_TAGGED;
1327 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1328 skb_shinfo(skb)->gso_size > 0) {
1330 desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1331 desc->total_hdr_length =
1332 skb_transport_offset(skb) + tcp_hdrlen(skb);
1334 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1335 TX_TCP_LSO6 : TX_TCP_LSO;
1338 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1341 if (protocol == cpu_to_be16(ETH_P_IP)) {
1342 l4proto = ip_hdr(skb)->protocol;
1344 if (l4proto == IPPROTO_TCP)
1345 opcode = TX_TCP_PKT;
1346 else if(l4proto == IPPROTO_UDP)
1347 opcode = TX_UDP_PKT;
1348 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1349 l4proto = ipv6_hdr(skb)->nexthdr;
1351 if (l4proto == IPPROTO_TCP)
1352 opcode = TX_TCPV6_PKT;
1353 else if(l4proto == IPPROTO_UDP)
1354 opcode = TX_UDPV6_PKT;
1357 desc->tcp_hdr_offset = skb_transport_offset(skb);
1358 desc->ip_hdr_offset = skb_network_offset(skb);
1359 netxen_set_tx_flags_opcode(desc, flags, opcode);
1364 netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
1365 struct netxen_cmd_buffer *pbuf, int last)
1368 struct netxen_skb_frag *buffrag;
1370 buffrag = &pbuf->frag_array[0];
1371 pci_unmap_single(pdev, buffrag->dma,
1372 buffrag->length, PCI_DMA_TODEVICE);
1374 for (k = 1; k < last; k++) {
1375 buffrag = &pbuf->frag_array[k];
1376 pci_unmap_page(pdev, buffrag->dma,
1377 buffrag->length, PCI_DMA_TODEVICE);
1382 netxen_clear_cmddesc(u64 *desc)
1385 for (i = 0; i < 8; i++)
1390 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1392 struct netxen_adapter *adapter = netdev_priv(netdev);
1393 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1394 unsigned int first_seg_len = skb->len - skb->data_len;
1395 struct netxen_cmd_buffer *pbuf;
1396 struct netxen_skb_frag *buffrag;
1397 struct cmd_desc_type0 *hwdesc;
1398 struct pci_dev *pdev = adapter->pdev;
1399 dma_addr_t temp_dma;
1403 int frag_count, no_of_desc;
1404 u32 num_txd = tx_ring->num_desc;
1405 bool is_tso = false;
1407 frag_count = skb_shinfo(skb)->nr_frags + 1;
1409 /* 4 fragments per cmd des */
1410 no_of_desc = (frag_count + 3) >> 2;
1412 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
1413 netif_stop_queue(netdev);
1414 return NETDEV_TX_BUSY;
1417 producer = tx_ring->producer;
1419 hwdesc = &tx_ring->desc_head[producer];
1420 netxen_clear_cmddesc((u64 *)hwdesc);
1421 pbuf = &tx_ring->cmd_buf_arr[producer];
1423 is_tso = netxen_tso_check(netdev, hwdesc, skb);
1426 pbuf->frag_count = frag_count;
1427 buffrag = &pbuf->frag_array[0];
1428 temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
1430 if (pci_dma_mapping_error(pdev, temp_dma))
1433 buffrag->dma = temp_dma;
1434 buffrag->length = first_seg_len;
1435 netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
1436 netxen_set_tx_port(hwdesc, adapter->portnum);
1438 hwdesc->buffer_length[0] = cpu_to_le16(first_seg_len);
1439 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1441 for (i = 1, k = 1; i < frag_count; i++, k++) {
1442 struct skb_frag_struct *frag;
1444 unsigned long offset;
1446 /* move to next desc. if there is a need */
1447 if ((i & 0x3) == 0) {
1449 producer = get_next_index(producer, num_txd);
1450 hwdesc = &tx_ring->desc_head[producer];
1451 netxen_clear_cmddesc((u64 *)hwdesc);
1452 pbuf = &tx_ring->cmd_buf_arr[producer];
1455 frag = &skb_shinfo(skb)->frags[i - 1];
1457 offset = frag->page_offset;
1460 temp_dma = pci_map_page(pdev, frag->page, offset,
1461 len, PCI_DMA_TODEVICE);
1462 if (pci_dma_mapping_error(pdev, temp_dma)) {
1463 netxen_clean_tx_dma_mapping(pdev, pbuf, i);
1468 buffrag->dma = temp_dma;
1469 buffrag->length = temp_len;
1471 hwdesc->buffer_length[k] = cpu_to_le16(temp_len);
1474 hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
1477 hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
1480 hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
1483 hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
1488 producer = get_next_index(producer, num_txd);
1490 /* For LSO, we need to copy the MAC/IP/TCP headers into
1491 * the descriptor ring
1494 int hdr_len, first_hdr_len, more_hdr;
1495 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1496 if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
1497 first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
1500 first_hdr_len = hdr_len;
1503 /* copy the MAC/IP/TCP headers to the cmd descriptor list */
1504 hwdesc = &tx_ring->desc_head[producer];
1505 pbuf = &tx_ring->cmd_buf_arr[producer];
1508 /* copy the first 64 bytes */
1509 memcpy(((void *)hwdesc) + 2,
1510 (void *)(skb->data), first_hdr_len);
1511 producer = get_next_index(producer, num_txd);
1514 hwdesc = &tx_ring->desc_head[producer];
1515 pbuf = &tx_ring->cmd_buf_arr[producer];
1517 /* copy the next 64 bytes - should be enough except
1518 * for pathological case
1520 skb_copy_from_linear_data_offset(skb, first_hdr_len,
1524 producer = get_next_index(producer, num_txd);
1528 tx_ring->producer = producer;
1529 adapter->stats.txbytes += skb->len;
1531 netxen_nic_update_cmd_producer(adapter, tx_ring);
1533 adapter->stats.xmitcalled++;
1535 return NETDEV_TX_OK;
1538 adapter->stats.txdropped++;
1539 dev_kfree_skb_any(skb);
1540 return NETDEV_TX_OK;
1543 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1545 struct net_device *netdev = adapter->netdev;
1546 uint32_t temp, temp_state, temp_val;
1549 temp = NXRD32(adapter, CRB_TEMP_STATE);
1551 temp_state = nx_get_temp_state(temp);
1552 temp_val = nx_get_temp_val(temp);
1554 if (temp_state == NX_TEMP_PANIC) {
1556 "%s: Device temperature %d degrees C exceeds"
1557 " maximum allowed. Hardware has been shut down.\n",
1558 netdev->name, temp_val);
1560 netif_device_detach(netdev);
1561 netxen_nic_down(adapter, netdev);
1562 netxen_nic_detach(adapter);
1565 } else if (temp_state == NX_TEMP_WARN) {
1566 if (adapter->temp == NX_TEMP_NORMAL) {
1568 "%s: Device temperature %d degrees C "
1569 "exceeds operating range."
1570 " Immediate action needed.\n",
1571 netdev->name, temp_val);
1574 if (adapter->temp == NX_TEMP_WARN) {
1576 "%s: Device temperature is now %d degrees C"
1577 " in normal range.\n", netdev->name,
1581 adapter->temp = temp_state;
1585 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1587 struct net_device *netdev = adapter->netdev;
1589 if (adapter->ahw.linkup && !linkup) {
1590 printk(KERN_INFO "%s: %s NIC Link is down\n",
1591 netxen_nic_driver_name, netdev->name);
1592 adapter->ahw.linkup = 0;
1593 if (netif_running(netdev)) {
1594 netif_carrier_off(netdev);
1595 netif_stop_queue(netdev);
1598 if (!adapter->has_link_events)
1599 netxen_nic_set_link_parameters(adapter);
1601 } else if (!adapter->ahw.linkup && linkup) {
1602 printk(KERN_INFO "%s: %s NIC Link is up\n",
1603 netxen_nic_driver_name, netdev->name);
1604 adapter->ahw.linkup = 1;
1605 if (netif_running(netdev)) {
1606 netif_carrier_on(netdev);
1607 netif_wake_queue(netdev);
1610 if (!adapter->has_link_events)
1611 netxen_nic_set_link_parameters(adapter);
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_watchdog(unsigned long v)
1640 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1642 SCHEDULE_WORK(&adapter->watchdog_task);
1645 void netxen_watchdog_task(struct work_struct *work)
1647 struct netxen_adapter *adapter =
1648 container_of(work, struct netxen_adapter, watchdog_task);
1650 if (netxen_nic_check_temp(adapter))
1653 if (!adapter->has_link_events)
1654 netxen_nic_handle_phy_intr(adapter);
1656 if (netif_running(adapter->netdev))
1657 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1660 static void netxen_tx_timeout(struct net_device *netdev)
1662 struct netxen_adapter *adapter = (struct netxen_adapter *)
1663 netdev_priv(netdev);
1664 SCHEDULE_WORK(&adapter->tx_timeout_task);
1667 static void netxen_tx_timeout_task(struct work_struct *work)
1669 struct netxen_adapter *adapter =
1670 container_of(work, struct netxen_adapter, tx_timeout_task);
1672 if (!netif_running(adapter->netdev))
1675 printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
1676 netxen_nic_driver_name, adapter->netdev->name);
1678 netxen_napi_disable(adapter);
1680 adapter->netdev->trans_start = jiffies;
1682 netxen_napi_enable(adapter);
1683 netif_wake_queue(adapter->netdev);
1686 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1688 struct netxen_adapter *adapter = netdev_priv(netdev);
1689 struct net_device_stats *stats = &adapter->net_stats;
1691 memset(stats, 0, sizeof(*stats));
1693 stats->rx_packets = adapter->stats.no_rcv;
1694 stats->tx_packets = adapter->stats.xmitfinished;
1695 stats->rx_bytes = adapter->stats.rxbytes;
1696 stats->tx_bytes = adapter->stats.txbytes;
1697 stats->rx_dropped = adapter->stats.rxdropped;
1698 stats->tx_dropped = adapter->stats.txdropped;
1703 static irqreturn_t netxen_intr(int irq, void *data)
1705 struct nx_host_sds_ring *sds_ring = data;
1706 struct netxen_adapter *adapter = sds_ring->adapter;
1709 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1711 if (!(status & adapter->legacy_intr.int_vec_bit))
1714 if (adapter->ahw.revision_id >= NX_P3_B1) {
1715 /* check interrupt state machine, to be sure */
1716 status = adapter->pci_read_immediate(adapter,
1718 if (!ISR_LEGACY_INT_TRIGGERED(status))
1722 unsigned long our_int = 0;
1724 our_int = NXRD32(adapter, CRB_INT_VECTOR);
1726 /* not our interrupt */
1727 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1730 /* claim interrupt */
1731 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
1734 /* clear interrupt */
1735 if (adapter->fw_major < 4)
1736 netxen_nic_disable_int(sds_ring);
1738 adapter->pci_write_immediate(adapter,
1739 adapter->legacy_intr.tgt_status_reg,
1741 /* read twice to ensure write is flushed */
1742 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1743 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1745 napi_schedule(&sds_ring->napi);
1750 static irqreturn_t netxen_msi_intr(int irq, void *data)
1752 struct nx_host_sds_ring *sds_ring = data;
1753 struct netxen_adapter *adapter = sds_ring->adapter;
1755 /* clear interrupt */
1756 adapter->pci_write_immediate(adapter,
1757 adapter->msi_tgt_status, 0xffffffff);
1759 napi_schedule(&sds_ring->napi);
1763 static irqreturn_t netxen_msix_intr(int irq, void *data)
1765 struct nx_host_sds_ring *sds_ring = data;
1767 napi_schedule(&sds_ring->napi);
1771 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1773 struct nx_host_sds_ring *sds_ring =
1774 container_of(napi, struct nx_host_sds_ring, napi);
1776 struct netxen_adapter *adapter = sds_ring->adapter;
1781 tx_complete = netxen_process_cmd_ring(adapter);
1783 work_done = netxen_process_rcv_ring(sds_ring, budget);
1785 if ((work_done < budget) && tx_complete) {
1786 napi_complete(&sds_ring->napi);
1787 if (netif_running(adapter->netdev))
1788 netxen_nic_enable_int(sds_ring);
1794 #ifdef CONFIG_NET_POLL_CONTROLLER
1795 static void netxen_nic_poll_controller(struct net_device *netdev)
1797 struct netxen_adapter *adapter = netdev_priv(netdev);
1798 disable_irq(adapter->irq);
1799 netxen_intr(adapter->irq, adapter);
1800 enable_irq(adapter->irq);
1804 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
1807 netxen_destip_supported(struct netxen_adapter *adapter)
1809 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1812 if (adapter->ahw.cut_through)
1818 static int netxen_netdev_event(struct notifier_block *this,
1819 unsigned long event, void *ptr)
1821 struct netxen_adapter *adapter;
1822 struct net_device *dev = (struct net_device *)ptr;
1823 struct in_device *indev;
1829 if (dev->priv_flags & IFF_802_1Q_VLAN) {
1830 dev = vlan_dev_real_dev(dev);
1834 if (!is_netxen_netdev(dev))
1837 adapter = netdev_priv(dev);
1839 if (!adapter || !netxen_destip_supported(adapter))
1842 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1845 indev = in_dev_get(dev);
1852 netxen_config_ipaddr(adapter,
1853 ifa->ifa_address, NX_IP_UP);
1856 netxen_config_ipaddr(adapter,
1857 ifa->ifa_address, NX_IP_DOWN);
1862 } endfor_ifa(indev);
1870 netxen_inetaddr_event(struct notifier_block *this,
1871 unsigned long event, void *ptr)
1873 struct netxen_adapter *adapter;
1874 struct net_device *dev;
1876 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
1878 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
1881 if (dev == NULL || !netif_running(dev))
1884 if (dev->priv_flags & IFF_802_1Q_VLAN) {
1885 dev = vlan_dev_real_dev(dev);
1889 if (!is_netxen_netdev(dev))
1892 adapter = netdev_priv(dev);
1894 if (!adapter || !netxen_destip_supported(adapter))
1897 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1902 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
1905 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
1915 static struct notifier_block netxen_netdev_cb = {
1916 .notifier_call = netxen_netdev_event,
1919 static struct notifier_block netxen_inetaddr_cb = {
1920 .notifier_call = netxen_inetaddr_event,
1923 static struct pci_driver netxen_driver = {
1924 .name = netxen_nic_driver_name,
1925 .id_table = netxen_pci_tbl,
1926 .probe = netxen_nic_probe,
1927 .remove = __devexit_p(netxen_nic_remove),
1929 .suspend = netxen_nic_suspend,
1930 .resume = netxen_nic_resume
1934 /* Driver Registration on NetXen card */
1936 static int __init netxen_init_module(void)
1938 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
1940 if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
1943 register_netdevice_notifier(&netxen_netdev_cb);
1944 register_inetaddr_notifier(&netxen_inetaddr_cb);
1946 return pci_register_driver(&netxen_driver);
1949 module_init(netxen_init_module);
1951 static void __exit netxen_exit_module(void)
1953 pci_unregister_driver(&netxen_driver);
1955 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
1956 unregister_netdevice_notifier(&netxen_netdev_cb);
1957 destroy_workqueue(netxen_workq);
1960 module_exit(netxen_exit_module);