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Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/lowpan/lowpan
[deliverable/linux.git] / drivers / net / netxen / netxen_nic_main.c
1 /*
2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3 * All rights reserved.
4 *
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.
9 *
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.
14 *
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,
18 * MA 02111-1307, USA.
19 *
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
22 *
23 * Contact Information:
24 * info@netxen.com
25 * NetXen Inc,
26 * 18922 Forge Drive
27 * Cupertino, CA 95014-0701
28 *
29 */
30
31 #include <linux/vmalloc.h>
32 #include <linux/interrupt.h>
33 #include "netxen_nic_hw.h"
34
35 #include "netxen_nic.h"
36
37 #include <linux/dma-mapping.h>
38 #include <linux/if_vlan.h>
39 #include <net/ip.h>
40 #include <linux/ipv6.h>
41 #include <linux/inetdevice.h>
42
43 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
44 MODULE_LICENSE("GPL");
45 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
46
47 char netxen_nic_driver_name[] = "netxen_nic";
48 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
49 NETXEN_NIC_LINUX_VERSIONID;
50
51 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
52
53 /* Default to restricted 1G auto-neg mode */
54 static int wol_port_mode = 5;
55
56 static int use_msi = 1;
57
58 static int use_msi_x = 1;
59
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_reset_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);
73 #endif
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);
77
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}
82
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),
92 {0,}
93 };
94
95 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
96
97 static void netxen_watchdog(unsigned long);
98
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
102 };
103
104 void
105 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
106 struct nx_host_tx_ring *tx_ring)
107 {
108 NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
109
110 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
111 netif_stop_queue(adapter->netdev);
112 smp_mb();
113 }
114 }
115
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
119 };
120
121 static inline void
122 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
123 struct nx_host_tx_ring *tx_ring)
124 {
125 NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
126 }
127
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
133 };
134
135 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
136
137 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
138 {
139 struct netxen_adapter *adapter = sds_ring->adapter;
140
141 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
142 }
143
144 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
145 {
146 struct netxen_adapter *adapter = sds_ring->adapter;
147
148 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
149
150 if (!NETXEN_IS_MSI_FAMILY(adapter))
151 adapter->pci_write_immediate(adapter,
152 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
153 }
154
155 static int
156 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
157 {
158 int size = sizeof(struct nx_host_sds_ring) * count;
159
160 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
161
162 return (recv_ctx->sds_rings == NULL);
163 }
164
165 static void
166 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
167 {
168 if (recv_ctx->sds_rings != NULL)
169 kfree(recv_ctx->sds_rings);
170
171 recv_ctx->sds_rings = NULL;
172 }
173
174 static int
175 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
176 {
177 int ring;
178 struct nx_host_sds_ring *sds_ring;
179 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
180
181 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
182 return -ENOMEM;
183
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);
188 }
189
190 return 0;
191 }
192
193 static void
194 netxen_napi_del(struct netxen_adapter *adapter)
195 {
196 int ring;
197 struct nx_host_sds_ring *sds_ring;
198 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
199
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);
203 }
204
205 netxen_free_sds_rings(&adapter->recv_ctx);
206 }
207
208 static void
209 netxen_napi_enable(struct netxen_adapter *adapter)
210 {
211 int ring;
212 struct nx_host_sds_ring *sds_ring;
213 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
214
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);
219 }
220 }
221
222 static void
223 netxen_napi_disable(struct netxen_adapter *adapter)
224 {
225 int ring;
226 struct nx_host_sds_ring *sds_ring;
227 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
228
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);
234 }
235 }
236
237 static int nx_set_dma_mask(struct netxen_adapter *adapter)
238 {
239 struct pci_dev *pdev = adapter->pdev;
240 uint64_t mask, cmask;
241
242 adapter->pci_using_dac = 0;
243
244 mask = DMA_BIT_MASK(32);
245 cmask = DMA_BIT_MASK(32);
246
247 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
248 #ifndef CONFIG_IA64
249 mask = DMA_BIT_MASK(35);
250 #endif
251 } else {
252 mask = DMA_BIT_MASK(39);
253 cmask = mask;
254 }
255
256 if (pci_set_dma_mask(pdev, mask) == 0 &&
257 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
258 adapter->pci_using_dac = 1;
259 return 0;
260 }
261
262 return -EIO;
263 }
264
265 /* Update addressable range if firmware supports it */
266 static int
267 nx_update_dma_mask(struct netxen_adapter *adapter)
268 {
269 int change, shift, err;
270 uint64_t mask, old_mask, old_cmask;
271 struct pci_dev *pdev = adapter->pdev;
272
273 change = 0;
274
275 shift = NXRD32(adapter, CRB_DMA_SHIFT);
276 if (shift > 32)
277 return 0;
278
279 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
280 change = 1;
281 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
282 change = 1;
283
284 if (change) {
285 old_mask = pdev->dma_mask;
286 old_cmask = pdev->dev.coherent_dma_mask;
287
288 mask = DMA_BIT_MASK(32+shift);
289
290 err = pci_set_dma_mask(pdev, mask);
291 if (err)
292 goto err_out;
293
294 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
295
296 err = pci_set_consistent_dma_mask(pdev, mask);
297 if (err)
298 goto err_out;
299 }
300 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
301 }
302
303 return 0;
304
305 err_out:
306 pci_set_dma_mask(pdev, old_mask);
307 pci_set_consistent_dma_mask(pdev, old_cmask);
308 return err;
309 }
310
311 static void
312 netxen_check_options(struct netxen_adapter *adapter)
313 {
314 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
315 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
316 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
317 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
318 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
319 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
320 }
321
322 adapter->msix_supported = 0;
323 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
324 adapter->msix_supported = !!use_msi_x;
325 adapter->rss_supported = !!use_msi_x;
326 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
327 switch (adapter->ahw.board_type) {
328 case NETXEN_BRDTYPE_P2_SB31_10G:
329 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
330 adapter->msix_supported = !!use_msi_x;
331 adapter->rss_supported = !!use_msi_x;
332 break;
333 default:
334 break;
335 }
336 }
337
338 adapter->num_txd = MAX_CMD_DESCRIPTORS;
339
340 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
341 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
342 adapter->max_rds_rings = 3;
343 } else {
344 adapter->num_lro_rxd = 0;
345 adapter->max_rds_rings = 2;
346 }
347 }
348
349 static int
350 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
351 {
352 u32 val, timeout;
353
354 if (first_boot == 0x55555555) {
355 /* This is the first boot after power up */
356 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
357
358 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
359 return 0;
360
361 /* PCI bus master workaround */
362 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
363 if (!(first_boot & 0x4)) {
364 first_boot |= 0x4;
365 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
366 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
367 }
368
369 /* This is the first boot after power up */
370 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
371 if (first_boot != 0x80000f) {
372 /* clear the register for future unloads/loads */
373 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
374 return -EIO;
375 }
376
377 /* Start P2 boot loader */
378 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
379 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
380 timeout = 0;
381 do {
382 msleep(1);
383 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
384
385 if (++timeout > 5000)
386 return -EIO;
387
388 } while (val == NETXEN_BDINFO_MAGIC);
389 }
390 return 0;
391 }
392
393 static void netxen_set_port_mode(struct netxen_adapter *adapter)
394 {
395 u32 val, data;
396
397 val = adapter->ahw.board_type;
398 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
399 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
400 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
401 data = NETXEN_PORT_MODE_802_3_AP;
402 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
403 } else if (port_mode == NETXEN_PORT_MODE_XG) {
404 data = NETXEN_PORT_MODE_XG;
405 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
406 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
407 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
408 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
409 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
410 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
411 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
412 } else {
413 data = NETXEN_PORT_MODE_AUTO_NEG;
414 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
415 }
416
417 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
418 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
419 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
420 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
421 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
422 }
423 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
424 }
425 }
426
427 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
428 {
429 u32 control;
430 int pos;
431
432 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
433 if (pos) {
434 pci_read_config_dword(pdev, pos, &control);
435 if (enable)
436 control |= PCI_MSIX_FLAGS_ENABLE;
437 else
438 control = 0;
439 pci_write_config_dword(pdev, pos, control);
440 }
441 }
442
443 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
444 {
445 int i;
446
447 for (i = 0; i < count; i++)
448 adapter->msix_entries[i].entry = i;
449 }
450
451 static int
452 netxen_read_mac_addr(struct netxen_adapter *adapter)
453 {
454 int i;
455 unsigned char *p;
456 __le64 mac_addr;
457 struct net_device *netdev = adapter->netdev;
458 struct pci_dev *pdev = adapter->pdev;
459
460 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
461 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
462 return -EIO;
463 } else {
464 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
465 return -EIO;
466 }
467
468 p = (unsigned char *)&mac_addr;
469 for (i = 0; i < 6; i++)
470 netdev->dev_addr[i] = *(p + 5 - i);
471
472 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
473
474 /* set station address */
475
476 if (!is_valid_ether_addr(netdev->perm_addr))
477 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
478
479 return 0;
480 }
481
482 int netxen_nic_set_mac(struct net_device *netdev, void *p)
483 {
484 struct netxen_adapter *adapter = netdev_priv(netdev);
485 struct sockaddr *addr = p;
486
487 if (!is_valid_ether_addr(addr->sa_data))
488 return -EINVAL;
489
490 if (netif_running(netdev)) {
491 netif_device_detach(netdev);
492 netxen_napi_disable(adapter);
493 }
494
495 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
496 adapter->macaddr_set(adapter, addr->sa_data);
497
498 if (netif_running(netdev)) {
499 netif_device_attach(netdev);
500 netxen_napi_enable(adapter);
501 }
502 return 0;
503 }
504
505 static void netxen_set_multicast_list(struct net_device *dev)
506 {
507 struct netxen_adapter *adapter = netdev_priv(dev);
508
509 adapter->set_multi(dev);
510 }
511
512 static const struct net_device_ops netxen_netdev_ops = {
513 .ndo_open = netxen_nic_open,
514 .ndo_stop = netxen_nic_close,
515 .ndo_start_xmit = netxen_nic_xmit_frame,
516 .ndo_get_stats = netxen_nic_get_stats,
517 .ndo_validate_addr = eth_validate_addr,
518 .ndo_set_multicast_list = netxen_set_multicast_list,
519 .ndo_set_mac_address = netxen_nic_set_mac,
520 .ndo_change_mtu = netxen_nic_change_mtu,
521 .ndo_tx_timeout = netxen_tx_timeout,
522 #ifdef CONFIG_NET_POLL_CONTROLLER
523 .ndo_poll_controller = netxen_nic_poll_controller,
524 #endif
525 };
526
527 static void
528 netxen_setup_intr(struct netxen_adapter *adapter)
529 {
530 struct netxen_legacy_intr_set *legacy_intrp;
531 struct pci_dev *pdev = adapter->pdev;
532 int err, num_msix;
533
534 if (adapter->rss_supported) {
535 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
536 MSIX_ENTRIES_PER_ADAPTER : 2;
537 } else
538 num_msix = 1;
539
540 adapter->max_sds_rings = 1;
541
542 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
543
544 if (adapter->ahw.revision_id >= NX_P3_B0)
545 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
546 else
547 legacy_intrp = &legacy_intr[0];
548 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
549 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
550 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
551 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
552
553 netxen_set_msix_bit(pdev, 0);
554
555 if (adapter->msix_supported) {
556
557 netxen_init_msix_entries(adapter, num_msix);
558 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
559 if (err == 0) {
560 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
561 netxen_set_msix_bit(pdev, 1);
562
563 if (adapter->rss_supported)
564 adapter->max_sds_rings = num_msix;
565
566 dev_info(&pdev->dev, "using msi-x interrupts\n");
567 return;
568 }
569
570 if (err > 0)
571 pci_disable_msix(pdev);
572
573 /* fall through for msi */
574 }
575
576 if (use_msi && !pci_enable_msi(pdev)) {
577 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
578 adapter->msi_tgt_status =
579 msi_tgt_status[adapter->ahw.pci_func];
580 dev_info(&pdev->dev, "using msi interrupts\n");
581 adapter->msix_entries[0].vector = pdev->irq;
582 return;
583 }
584
585 dev_info(&pdev->dev, "using legacy interrupts\n");
586 adapter->msix_entries[0].vector = pdev->irq;
587 }
588
589 static void
590 netxen_teardown_intr(struct netxen_adapter *adapter)
591 {
592 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
593 pci_disable_msix(adapter->pdev);
594 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
595 pci_disable_msi(adapter->pdev);
596 }
597
598 static void
599 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
600 {
601 if (adapter->ahw.db_base != NULL)
602 iounmap(adapter->ahw.db_base);
603 if (adapter->ahw.pci_base0 != NULL)
604 iounmap(adapter->ahw.pci_base0);
605 if (adapter->ahw.pci_base1 != NULL)
606 iounmap(adapter->ahw.pci_base1);
607 if (adapter->ahw.pci_base2 != NULL)
608 iounmap(adapter->ahw.pci_base2);
609 }
610
611 static int
612 netxen_setup_pci_map(struct netxen_adapter *adapter)
613 {
614 void __iomem *mem_ptr0 = NULL;
615 void __iomem *mem_ptr1 = NULL;
616 void __iomem *mem_ptr2 = NULL;
617 void __iomem *db_ptr = NULL;
618
619 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
620
621 struct pci_dev *pdev = adapter->pdev;
622 int pci_func = adapter->ahw.pci_func;
623
624 int err = 0;
625
626 /*
627 * Set the CRB window to invalid. If any register in window 0 is
628 * accessed it should set the window to 0 and then reset it to 1.
629 */
630 adapter->curr_window = 255;
631 adapter->ahw.qdr_sn_window = -1;
632 adapter->ahw.ddr_mn_window = -1;
633
634 /* remap phys address */
635 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
636 mem_len = pci_resource_len(pdev, 0);
637 pci_len0 = 0;
638
639 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
640 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
641 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
642 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
643 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
644 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
645 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
646
647 /* 128 Meg of memory */
648 if (mem_len == NETXEN_PCI_128MB_SIZE) {
649 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
650 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
651 SECOND_PAGE_GROUP_SIZE);
652 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
653 THIRD_PAGE_GROUP_SIZE);
654 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
655 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
656 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
657 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
658 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
659 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
660 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
661 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
662 adapter->pci_write_immediate =
663 netxen_nic_pci_write_immediate_2M;
664 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
665 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
666 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
667
668 mem_ptr0 = pci_ioremap_bar(pdev, 0);
669 if (mem_ptr0 == NULL) {
670 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
671 return -EIO;
672 }
673 pci_len0 = mem_len;
674
675 adapter->ahw.ddr_mn_window = 0;
676 adapter->ahw.qdr_sn_window = 0;
677
678 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
679 (pci_func * 0x20);
680 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
681 if (pci_func < 4)
682 adapter->ahw.ms_win_crb += (pci_func * 0x20);
683 else
684 adapter->ahw.ms_win_crb +=
685 0xA0 + ((pci_func - 4) * 0x10);
686 } else {
687 return -EIO;
688 }
689
690 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
691
692 adapter->ahw.pci_base0 = mem_ptr0;
693 adapter->ahw.pci_len0 = pci_len0;
694 adapter->ahw.pci_base1 = mem_ptr1;
695 adapter->ahw.pci_base2 = mem_ptr2;
696
697 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
698 goto skip_doorbell;
699
700 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
701 db_len = pci_resource_len(pdev, 4);
702
703 if (db_len == 0) {
704 printk(KERN_ERR "%s: doorbell is disabled\n",
705 netxen_nic_driver_name);
706 err = -EIO;
707 goto err_out;
708 }
709
710 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
711 if (!db_ptr) {
712 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
713 netxen_nic_driver_name);
714 err = -EIO;
715 goto err_out;
716 }
717
718 skip_doorbell:
719 adapter->ahw.db_base = db_ptr;
720 adapter->ahw.db_len = db_len;
721 return 0;
722
723 err_out:
724 netxen_cleanup_pci_map(adapter);
725 return err;
726 }
727
728 static int
729 netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
730 {
731 int val, err, first_boot;
732 struct pci_dev *pdev = adapter->pdev;
733
734 int first_driver = 0;
735
736 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
737 first_driver = (adapter->portnum == 0);
738 else
739 first_driver = (adapter->ahw.pci_func == 0);
740
741 if (!first_driver)
742 goto wait_init;
743
744 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
745
746 err = netxen_check_hw_init(adapter, first_boot);
747 if (err) {
748 dev_err(&pdev->dev, "error in init HW init sequence\n");
749 return err;
750 }
751
752 if (request_fw)
753 netxen_request_firmware(adapter);
754
755 err = netxen_need_fw_reset(adapter);
756 if (err < 0)
757 return err;
758 if (err == 0)
759 goto wait_init;
760
761 if (first_boot != 0x55555555) {
762 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
763 netxen_pinit_from_rom(adapter, 0);
764 msleep(1);
765 }
766
767 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
768 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
769 netxen_set_port_mode(adapter);
770
771 netxen_load_firmware(adapter);
772
773 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
774
775 /* Initialize multicast addr pool owners */
776 val = 0x7654;
777 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
778 val |= 0x0f000000;
779 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
780
781 }
782
783 err = netxen_init_dummy_dma(adapter);
784 if (err)
785 return err;
786
787 /*
788 * Tell the hardware our version number.
789 */
790 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
791 | ((_NETXEN_NIC_LINUX_MINOR << 8))
792 | (_NETXEN_NIC_LINUX_SUBVERSION);
793 NXWR32(adapter, CRB_DRIVER_VERSION, val);
794
795 wait_init:
796 /* Handshake with the card before we register the devices. */
797 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
798 if (err) {
799 netxen_free_dummy_dma(adapter);
800 return err;
801 }
802
803 nx_update_dma_mask(adapter);
804
805 netxen_nic_get_firmware_info(adapter);
806
807 return 0;
808 }
809
810 static int
811 netxen_nic_request_irq(struct netxen_adapter *adapter)
812 {
813 irq_handler_t handler;
814 struct nx_host_sds_ring *sds_ring;
815 int err, ring;
816
817 unsigned long flags = IRQF_SAMPLE_RANDOM;
818 struct net_device *netdev = adapter->netdev;
819 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
820
821 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
822 handler = netxen_msix_intr;
823 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
824 handler = netxen_msi_intr;
825 else {
826 flags |= IRQF_SHARED;
827 handler = netxen_intr;
828 }
829 adapter->irq = netdev->irq;
830
831 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
832 sds_ring = &recv_ctx->sds_rings[ring];
833 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
834 err = request_irq(sds_ring->irq, handler,
835 flags, sds_ring->name, sds_ring);
836 if (err)
837 return err;
838 }
839
840 return 0;
841 }
842
843 static void
844 netxen_nic_free_irq(struct netxen_adapter *adapter)
845 {
846 int ring;
847 struct nx_host_sds_ring *sds_ring;
848
849 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
850
851 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
852 sds_ring = &recv_ctx->sds_rings[ring];
853 free_irq(sds_ring->irq, sds_ring);
854 }
855 }
856
857 static void
858 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
859 {
860 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
861 adapter->coal.normal.data.rx_time_us =
862 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
863 adapter->coal.normal.data.rx_packets =
864 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
865 adapter->coal.normal.data.tx_time_us =
866 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
867 adapter->coal.normal.data.tx_packets =
868 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
869 }
870
871 static int
872 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
873 {
874 int err;
875
876 err = adapter->init_port(adapter, adapter->physical_port);
877 if (err) {
878 printk(KERN_ERR "%s: Failed to initialize port %d\n",
879 netxen_nic_driver_name, adapter->portnum);
880 return err;
881 }
882 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
883 adapter->macaddr_set(adapter, netdev->dev_addr);
884
885 adapter->set_multi(netdev);
886 adapter->set_mtu(adapter, netdev->mtu);
887
888 adapter->ahw.linkup = 0;
889
890 if (adapter->max_sds_rings > 1)
891 netxen_config_rss(adapter, 1);
892
893 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
894 netxen_config_intr_coalesce(adapter);
895
896 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
897 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
898
899 netxen_napi_enable(adapter);
900
901 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
902 netxen_linkevent_request(adapter, 1);
903 else
904 netxen_nic_set_link_parameters(adapter);
905
906 mod_timer(&adapter->watchdog_timer, jiffies);
907
908 return 0;
909 }
910
911 static void
912 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
913 {
914 spin_lock(&adapter->tx_clean_lock);
915 netif_carrier_off(netdev);
916 netif_tx_disable(netdev);
917
918 if (adapter->stop_port)
919 adapter->stop_port(adapter);
920
921 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
922 netxen_p3_free_mac_list(adapter);
923
924 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
925
926 netxen_napi_disable(adapter);
927
928 netxen_release_tx_buffers(adapter);
929 spin_unlock(&adapter->tx_clean_lock);
930
931 del_timer_sync(&adapter->watchdog_timer);
932 }
933
934
935 static int
936 netxen_nic_attach(struct netxen_adapter *adapter)
937 {
938 struct net_device *netdev = adapter->netdev;
939 struct pci_dev *pdev = adapter->pdev;
940 int err, ring;
941 struct nx_host_rds_ring *rds_ring;
942 struct nx_host_tx_ring *tx_ring;
943
944 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
945 return 0;
946
947 err = netxen_init_firmware(adapter);
948 if (err)
949 return err;
950
951 err = netxen_napi_add(adapter, netdev);
952 if (err)
953 return err;
954
955 err = netxen_alloc_sw_resources(adapter);
956 if (err) {
957 printk(KERN_ERR "%s: Error in setting sw resources\n",
958 netdev->name);
959 return err;
960 }
961
962 netxen_nic_clear_stats(adapter);
963
964 err = netxen_alloc_hw_resources(adapter);
965 if (err) {
966 printk(KERN_ERR "%s: Error in setting hw resources\n",
967 netdev->name);
968 goto err_out_free_sw;
969 }
970
971 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
972 tx_ring = adapter->tx_ring;
973 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
974 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
975
976 tx_ring->producer = 0;
977 tx_ring->sw_consumer = 0;
978
979 netxen_nic_update_cmd_producer(adapter, tx_ring);
980 netxen_nic_update_cmd_consumer(adapter, tx_ring);
981 }
982
983 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
984 rds_ring = &adapter->recv_ctx.rds_rings[ring];
985 netxen_post_rx_buffers(adapter, ring, rds_ring);
986 }
987
988 err = netxen_nic_request_irq(adapter);
989 if (err) {
990 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
991 netdev->name);
992 goto err_out_free_rxbuf;
993 }
994
995 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
996 netxen_nic_init_coalesce_defaults(adapter);
997
998 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
999 return 0;
1000
1001 err_out_free_rxbuf:
1002 netxen_release_rx_buffers(adapter);
1003 netxen_free_hw_resources(adapter);
1004 err_out_free_sw:
1005 netxen_free_sw_resources(adapter);
1006 return err;
1007 }
1008
1009 static void
1010 netxen_nic_detach(struct netxen_adapter *adapter)
1011 {
1012 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1013 return;
1014
1015 netxen_free_hw_resources(adapter);
1016 netxen_release_rx_buffers(adapter);
1017 netxen_nic_free_irq(adapter);
1018 netxen_napi_del(adapter);
1019 netxen_free_sw_resources(adapter);
1020
1021 adapter->is_up = 0;
1022 }
1023
1024 int
1025 netxen_nic_reset_context(struct netxen_adapter *adapter)
1026 {
1027 int err = 0;
1028 struct net_device *netdev = adapter->netdev;
1029
1030 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1031
1032 if (netif_running(netdev))
1033 netxen_nic_down(adapter, netdev);
1034
1035 netxen_nic_detach(adapter);
1036
1037 err = netxen_nic_attach(adapter);
1038 if (err)
1039 goto done;
1040
1041 if (netif_running(netdev))
1042 err = netxen_nic_up(adapter, netdev);
1043 }
1044 done:
1045 return err;
1046 }
1047
1048 static int
1049 netxen_setup_netdev(struct netxen_adapter *adapter,
1050 struct net_device *netdev)
1051 {
1052 int err = 0;
1053 struct pci_dev *pdev = adapter->pdev;
1054
1055 adapter->rx_csum = 1;
1056 adapter->mc_enabled = 0;
1057 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1058 adapter->max_mc_count = 38;
1059 else
1060 adapter->max_mc_count = 16;
1061
1062 netdev->netdev_ops = &netxen_netdev_ops;
1063 netdev->watchdog_timeo = 2*HZ;
1064
1065 netxen_nic_change_mtu(netdev, netdev->mtu);
1066
1067 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1068
1069 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1070 netdev->features |= (NETIF_F_GRO);
1071 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1072
1073 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1074 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1075 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1076 }
1077
1078 if (adapter->pci_using_dac) {
1079 netdev->features |= NETIF_F_HIGHDMA;
1080 netdev->vlan_features |= NETIF_F_HIGHDMA;
1081 }
1082
1083 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1084 netdev->features |= (NETIF_F_HW_VLAN_TX);
1085
1086 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1087 netdev->features |= NETIF_F_LRO;
1088
1089 netdev->irq = adapter->msix_entries[0].vector;
1090
1091 err = netxen_napi_add(adapter, netdev);
1092 if (err)
1093 return err;
1094
1095 init_timer(&adapter->watchdog_timer);
1096 adapter->watchdog_timer.function = &netxen_watchdog;
1097 adapter->watchdog_timer.data = (unsigned long)adapter;
1098 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1099 INIT_WORK(&adapter->tx_timeout_task, netxen_reset_task);
1100
1101 if (netxen_read_mac_addr(adapter))
1102 dev_warn(&pdev->dev, "failed to read mac addr\n");
1103
1104 netif_carrier_off(netdev);
1105 netif_stop_queue(netdev);
1106
1107 err = register_netdev(netdev);
1108 if (err) {
1109 dev_err(&pdev->dev, "failed to register net device\n");
1110 return err;
1111 }
1112
1113 return 0;
1114 }
1115
1116 static int __devinit
1117 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1118 {
1119 struct net_device *netdev = NULL;
1120 struct netxen_adapter *adapter = NULL;
1121 int i = 0, err;
1122 int pci_func_id = PCI_FUNC(pdev->devfn);
1123 uint8_t revision_id;
1124
1125 if (pdev->class != 0x020000) {
1126 printk(KERN_DEBUG "NetXen function %d, class %x will not "
1127 "be enabled.\n",pci_func_id, pdev->class);
1128 return -ENODEV;
1129 }
1130
1131 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1132 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
1133 "will not be enabled.\n",
1134 NX_P3_A0, NX_P3_B1);
1135 return -ENODEV;
1136 }
1137
1138 if ((err = pci_enable_device(pdev)))
1139 return err;
1140
1141 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1142 err = -ENODEV;
1143 goto err_out_disable_pdev;
1144 }
1145
1146 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1147 goto err_out_disable_pdev;
1148
1149 pci_set_master(pdev);
1150
1151 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1152 if(!netdev) {
1153 dev_err(&pdev->dev, "failed to allocate net_device\n");
1154 err = -ENOMEM;
1155 goto err_out_free_res;
1156 }
1157
1158 SET_NETDEV_DEV(netdev, &pdev->dev);
1159
1160 adapter = netdev_priv(netdev);
1161 adapter->netdev = netdev;
1162 adapter->pdev = pdev;
1163 adapter->ahw.pci_func = pci_func_id;
1164
1165 revision_id = pdev->revision;
1166 adapter->ahw.revision_id = revision_id;
1167
1168 err = nx_set_dma_mask(adapter);
1169 if (err)
1170 goto err_out_free_netdev;
1171
1172 rwlock_init(&adapter->adapter_lock);
1173 spin_lock_init(&adapter->tx_clean_lock);
1174 INIT_LIST_HEAD(&adapter->mac_list);
1175
1176 err = netxen_setup_pci_map(adapter);
1177 if (err)
1178 goto err_out_free_netdev;
1179
1180 /* This will be reset for mezz cards */
1181 adapter->portnum = pci_func_id;
1182
1183 err = netxen_nic_get_board_info(adapter);
1184 if (err) {
1185 dev_err(&pdev->dev, "Error getting board config info.\n");
1186 goto err_out_iounmap;
1187 }
1188
1189 netxen_initialize_adapter_ops(adapter);
1190
1191 /* Mezz cards have PCI function 0,2,3 enabled */
1192 switch (adapter->ahw.board_type) {
1193 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1194 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1195 if (pci_func_id >= 2)
1196 adapter->portnum = pci_func_id - 2;
1197 break;
1198 default:
1199 break;
1200 }
1201
1202 err = netxen_start_firmware(adapter, 1);
1203 if (err)
1204 goto err_out_iounmap;
1205
1206 /*
1207 * See if the firmware gave us a virtual-physical port mapping.
1208 */
1209 adapter->physical_port = adapter->portnum;
1210 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1211 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1212 if (i != 0x55555555)
1213 adapter->physical_port = i;
1214 }
1215
1216 netxen_check_options(adapter);
1217
1218 netxen_setup_intr(adapter);
1219
1220 err = netxen_setup_netdev(adapter, netdev);
1221 if (err)
1222 goto err_out_disable_msi;
1223
1224 pci_set_drvdata(pdev, adapter);
1225
1226 switch (adapter->ahw.port_type) {
1227 case NETXEN_NIC_GBE:
1228 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1229 adapter->netdev->name);
1230 break;
1231 case NETXEN_NIC_XGBE:
1232 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1233 adapter->netdev->name);
1234 break;
1235 }
1236
1237 return 0;
1238
1239 err_out_disable_msi:
1240 netxen_teardown_intr(adapter);
1241
1242 netxen_free_dummy_dma(adapter);
1243
1244 err_out_iounmap:
1245 netxen_cleanup_pci_map(adapter);
1246
1247 err_out_free_netdev:
1248 free_netdev(netdev);
1249
1250 err_out_free_res:
1251 pci_release_regions(pdev);
1252
1253 err_out_disable_pdev:
1254 pci_set_drvdata(pdev, NULL);
1255 pci_disable_device(pdev);
1256 return err;
1257 }
1258
1259 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1260 {
1261 struct netxen_adapter *adapter;
1262 struct net_device *netdev;
1263
1264 adapter = pci_get_drvdata(pdev);
1265 if (adapter == NULL)
1266 return;
1267
1268 netdev = adapter->netdev;
1269
1270 unregister_netdev(netdev);
1271
1272 cancel_work_sync(&adapter->watchdog_task);
1273 cancel_work_sync(&adapter->tx_timeout_task);
1274
1275 netxen_nic_detach(adapter);
1276
1277 if (adapter->portnum == 0)
1278 netxen_free_dummy_dma(adapter);
1279
1280 netxen_teardown_intr(adapter);
1281
1282 netxen_cleanup_pci_map(adapter);
1283
1284 netxen_release_firmware(adapter);
1285
1286 pci_release_regions(pdev);
1287 pci_disable_device(pdev);
1288 pci_set_drvdata(pdev, NULL);
1289
1290 free_netdev(netdev);
1291 }
1292 static int __netxen_nic_shutdown(struct pci_dev *pdev)
1293 {
1294 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1295 struct net_device *netdev = adapter->netdev;
1296 int retval;
1297
1298 netif_device_detach(netdev);
1299
1300 if (netif_running(netdev))
1301 netxen_nic_down(adapter, netdev);
1302
1303 cancel_work_sync(&adapter->watchdog_task);
1304 cancel_work_sync(&adapter->tx_timeout_task);
1305
1306 netxen_nic_detach(adapter);
1307
1308 if (adapter->portnum == 0)
1309 netxen_free_dummy_dma(adapter);
1310
1311 retval = pci_save_state(pdev);
1312 if (retval)
1313 return retval;
1314
1315 if (netxen_nic_wol_supported(adapter)) {
1316 pci_enable_wake(pdev, PCI_D3cold, 1);
1317 pci_enable_wake(pdev, PCI_D3hot, 1);
1318 }
1319
1320 pci_disable_device(pdev);
1321
1322 return 0;
1323 }
1324 static void netxen_nic_shutdown(struct pci_dev *pdev)
1325 {
1326 if (__netxen_nic_shutdown(pdev))
1327 return;
1328 }
1329 #ifdef CONFIG_PM
1330 static int
1331 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1332 {
1333 int retval;
1334
1335 retval = __netxen_nic_shutdown(pdev);
1336 if (retval)
1337 return retval;
1338
1339 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1340 return 0;
1341 }
1342
1343 static int
1344 netxen_nic_resume(struct pci_dev *pdev)
1345 {
1346 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1347 struct net_device *netdev = adapter->netdev;
1348 int err;
1349
1350 pci_set_power_state(pdev, PCI_D0);
1351 pci_restore_state(pdev);
1352
1353 err = pci_enable_device(pdev);
1354 if (err)
1355 return err;
1356
1357 adapter->curr_window = 255;
1358
1359 err = netxen_start_firmware(adapter, 0);
1360 if (err) {
1361 dev_err(&pdev->dev, "failed to start firmware\n");
1362 return err;
1363 }
1364
1365 if (netif_running(netdev)) {
1366 err = netxen_nic_attach(adapter);
1367 if (err)
1368 return err;
1369
1370 err = netxen_nic_up(adapter, netdev);
1371 if (err)
1372 return err;
1373
1374 netif_device_attach(netdev);
1375 }
1376
1377 return 0;
1378 }
1379 #endif
1380
1381 static int netxen_nic_open(struct net_device *netdev)
1382 {
1383 struct netxen_adapter *adapter = netdev_priv(netdev);
1384 int err = 0;
1385
1386 if (adapter->driver_mismatch)
1387 return -EIO;
1388
1389 err = netxen_nic_attach(adapter);
1390 if (err)
1391 return err;
1392
1393 err = netxen_nic_up(adapter, netdev);
1394 if (err)
1395 goto err_out;
1396
1397 netif_start_queue(netdev);
1398
1399 return 0;
1400
1401 err_out:
1402 netxen_nic_detach(adapter);
1403 return err;
1404 }
1405
1406 /*
1407 * netxen_nic_close - Disables a network interface entry point
1408 */
1409 static int netxen_nic_close(struct net_device *netdev)
1410 {
1411 struct netxen_adapter *adapter = netdev_priv(netdev);
1412
1413 netxen_nic_down(adapter, netdev);
1414 return 0;
1415 }
1416
1417 static void
1418 netxen_tso_check(struct net_device *netdev,
1419 struct nx_host_tx_ring *tx_ring,
1420 struct cmd_desc_type0 *first_desc,
1421 struct sk_buff *skb)
1422 {
1423 u8 opcode = TX_ETHER_PKT;
1424 __be16 protocol = skb->protocol;
1425 u16 flags = 0, vid = 0;
1426 u32 producer;
1427 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1428 struct cmd_desc_type0 *hwdesc;
1429 struct vlan_ethhdr *vh;
1430
1431 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1432
1433 vh = (struct vlan_ethhdr *)skb->data;
1434 protocol = vh->h_vlan_encapsulated_proto;
1435 flags = FLAGS_VLAN_TAGGED;
1436
1437 } else if (vlan_tx_tag_present(skb)) {
1438
1439 flags = FLAGS_VLAN_OOB;
1440 vid = vlan_tx_tag_get(skb);
1441 netxen_set_tx_vlan_tci(first_desc, vid);
1442 vlan_oob = 1;
1443 }
1444
1445 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1446 skb_shinfo(skb)->gso_size > 0) {
1447
1448 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1449
1450 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1451 first_desc->total_hdr_length = hdr_len;
1452 if (vlan_oob) {
1453 first_desc->total_hdr_length += VLAN_HLEN;
1454 first_desc->tcp_hdr_offset = VLAN_HLEN;
1455 first_desc->ip_hdr_offset = VLAN_HLEN;
1456 /* Only in case of TSO on vlan device */
1457 flags |= FLAGS_VLAN_TAGGED;
1458 }
1459
1460 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1461 TX_TCP_LSO6 : TX_TCP_LSO;
1462 tso = 1;
1463
1464 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1465 u8 l4proto;
1466
1467 if (protocol == cpu_to_be16(ETH_P_IP)) {
1468 l4proto = ip_hdr(skb)->protocol;
1469
1470 if (l4proto == IPPROTO_TCP)
1471 opcode = TX_TCP_PKT;
1472 else if(l4proto == IPPROTO_UDP)
1473 opcode = TX_UDP_PKT;
1474 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1475 l4proto = ipv6_hdr(skb)->nexthdr;
1476
1477 if (l4proto == IPPROTO_TCP)
1478 opcode = TX_TCPV6_PKT;
1479 else if(l4proto == IPPROTO_UDP)
1480 opcode = TX_UDPV6_PKT;
1481 }
1482 }
1483
1484 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1485 first_desc->ip_hdr_offset += skb_network_offset(skb);
1486 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1487
1488 if (!tso)
1489 return;
1490
1491 /* For LSO, we need to copy the MAC/IP/TCP headers into
1492 * the descriptor ring
1493 */
1494 producer = tx_ring->producer;
1495 copied = 0;
1496 offset = 2;
1497
1498 if (vlan_oob) {
1499 /* Create a TSO vlan header template for firmware */
1500
1501 hwdesc = &tx_ring->desc_head[producer];
1502 tx_ring->cmd_buf_arr[producer].skb = NULL;
1503
1504 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1505 hdr_len + VLAN_HLEN);
1506
1507 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1508 skb_copy_from_linear_data(skb, vh, 12);
1509 vh->h_vlan_proto = htons(ETH_P_8021Q);
1510 vh->h_vlan_TCI = htons(vid);
1511 skb_copy_from_linear_data_offset(skb, 12,
1512 (char *)vh + 16, copy_len - 16);
1513
1514 copied = copy_len - VLAN_HLEN;
1515 offset = 0;
1516
1517 producer = get_next_index(producer, tx_ring->num_desc);
1518 }
1519
1520 while (copied < hdr_len) {
1521
1522 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1523 (hdr_len - copied));
1524
1525 hwdesc = &tx_ring->desc_head[producer];
1526 tx_ring->cmd_buf_arr[producer].skb = NULL;
1527
1528 skb_copy_from_linear_data_offset(skb, copied,
1529 (char *)hwdesc + offset, copy_len);
1530
1531 copied += copy_len;
1532 offset = 0;
1533
1534 producer = get_next_index(producer, tx_ring->num_desc);
1535 }
1536
1537 tx_ring->producer = producer;
1538 barrier();
1539 }
1540
1541 static int
1542 netxen_map_tx_skb(struct pci_dev *pdev,
1543 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1544 {
1545 struct netxen_skb_frag *nf;
1546 struct skb_frag_struct *frag;
1547 int i, nr_frags;
1548 dma_addr_t map;
1549
1550 nr_frags = skb_shinfo(skb)->nr_frags;
1551 nf = &pbuf->frag_array[0];
1552
1553 map = pci_map_single(pdev, skb->data,
1554 skb_headlen(skb), PCI_DMA_TODEVICE);
1555 if (pci_dma_mapping_error(pdev, map))
1556 goto out_err;
1557
1558 nf->dma = map;
1559 nf->length = skb_headlen(skb);
1560
1561 for (i = 0; i < nr_frags; i++) {
1562 frag = &skb_shinfo(skb)->frags[i];
1563 nf = &pbuf->frag_array[i+1];
1564
1565 map = pci_map_page(pdev, frag->page, frag->page_offset,
1566 frag->size, PCI_DMA_TODEVICE);
1567 if (pci_dma_mapping_error(pdev, map))
1568 goto unwind;
1569
1570 nf->dma = map;
1571 nf->length = frag->size;
1572 }
1573
1574 return 0;
1575
1576 unwind:
1577 while (i > 0) {
1578 nf = &pbuf->frag_array[i];
1579 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1580 }
1581
1582 nf = &pbuf->frag_array[0];
1583 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1584
1585 out_err:
1586 return -ENOMEM;
1587 }
1588
1589 static inline void
1590 netxen_clear_cmddesc(u64 *desc)
1591 {
1592 desc[0] = 0ULL;
1593 desc[2] = 0ULL;
1594 }
1595
1596 static int
1597 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1598 {
1599 struct netxen_adapter *adapter = netdev_priv(netdev);
1600 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1601 struct netxen_cmd_buffer *pbuf;
1602 struct netxen_skb_frag *buffrag;
1603 struct cmd_desc_type0 *hwdesc, *first_desc;
1604 struct pci_dev *pdev;
1605 int i, k;
1606
1607 u32 producer;
1608 int frag_count, no_of_desc;
1609 u32 num_txd = tx_ring->num_desc;
1610
1611 frag_count = skb_shinfo(skb)->nr_frags + 1;
1612
1613 /* 4 fragments per cmd des */
1614 no_of_desc = (frag_count + 3) >> 2;
1615
1616 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
1617 netif_stop_queue(netdev);
1618 return NETDEV_TX_BUSY;
1619 }
1620
1621 producer = tx_ring->producer;
1622 pbuf = &tx_ring->cmd_buf_arr[producer];
1623
1624 pdev = adapter->pdev;
1625
1626 if (netxen_map_tx_skb(pdev, skb, pbuf))
1627 goto drop_packet;
1628
1629 pbuf->skb = skb;
1630 pbuf->frag_count = frag_count;
1631
1632 first_desc = hwdesc = &tx_ring->desc_head[producer];
1633 netxen_clear_cmddesc((u64 *)hwdesc);
1634
1635 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1636 netxen_set_tx_port(first_desc, adapter->portnum);
1637
1638 for (i = 0; i < frag_count; i++) {
1639
1640 k = i % 4;
1641
1642 if ((k == 0) && (i > 0)) {
1643 /* move to next desc.*/
1644 producer = get_next_index(producer, num_txd);
1645 hwdesc = &tx_ring->desc_head[producer];
1646 netxen_clear_cmddesc((u64 *)hwdesc);
1647 tx_ring->cmd_buf_arr[producer].skb = NULL;
1648 }
1649
1650 buffrag = &pbuf->frag_array[i];
1651
1652 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1653 switch (k) {
1654 case 0:
1655 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1656 break;
1657 case 1:
1658 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1659 break;
1660 case 2:
1661 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1662 break;
1663 case 3:
1664 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1665 break;
1666 }
1667 }
1668
1669 tx_ring->producer = get_next_index(producer, num_txd);
1670
1671 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1672
1673 netxen_nic_update_cmd_producer(adapter, tx_ring);
1674
1675 adapter->stats.txbytes += skb->len;
1676 adapter->stats.xmitcalled++;
1677
1678 return NETDEV_TX_OK;
1679
1680 drop_packet:
1681 adapter->stats.txdropped++;
1682 dev_kfree_skb_any(skb);
1683 return NETDEV_TX_OK;
1684 }
1685
1686 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1687 {
1688 struct net_device *netdev = adapter->netdev;
1689 uint32_t temp, temp_state, temp_val;
1690 int rv = 0;
1691
1692 temp = NXRD32(adapter, CRB_TEMP_STATE);
1693
1694 temp_state = nx_get_temp_state(temp);
1695 temp_val = nx_get_temp_val(temp);
1696
1697 if (temp_state == NX_TEMP_PANIC) {
1698 printk(KERN_ALERT
1699 "%s: Device temperature %d degrees C exceeds"
1700 " maximum allowed. Hardware has been shut down.\n",
1701 netdev->name, temp_val);
1702 rv = 1;
1703 } else if (temp_state == NX_TEMP_WARN) {
1704 if (adapter->temp == NX_TEMP_NORMAL) {
1705 printk(KERN_ALERT
1706 "%s: Device temperature %d degrees C "
1707 "exceeds operating range."
1708 " Immediate action needed.\n",
1709 netdev->name, temp_val);
1710 }
1711 } else {
1712 if (adapter->temp == NX_TEMP_WARN) {
1713 printk(KERN_INFO
1714 "%s: Device temperature is now %d degrees C"
1715 " in normal range.\n", netdev->name,
1716 temp_val);
1717 }
1718 }
1719 adapter->temp = temp_state;
1720 return rv;
1721 }
1722
1723 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1724 {
1725 struct net_device *netdev = adapter->netdev;
1726
1727 if (adapter->ahw.linkup && !linkup) {
1728 printk(KERN_INFO "%s: %s NIC Link is down\n",
1729 netxen_nic_driver_name, netdev->name);
1730 adapter->ahw.linkup = 0;
1731 if (netif_running(netdev)) {
1732 netif_carrier_off(netdev);
1733 netif_stop_queue(netdev);
1734 }
1735 adapter->link_changed = !adapter->has_link_events;
1736 } else if (!adapter->ahw.linkup && linkup) {
1737 printk(KERN_INFO "%s: %s NIC Link is up\n",
1738 netxen_nic_driver_name, netdev->name);
1739 adapter->ahw.linkup = 1;
1740 if (netif_running(netdev)) {
1741 netif_carrier_on(netdev);
1742 netif_wake_queue(netdev);
1743 }
1744 adapter->link_changed = !adapter->has_link_events;
1745 }
1746 }
1747
1748 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1749 {
1750 u32 val, port, linkup;
1751
1752 port = adapter->physical_port;
1753
1754 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1755 val = NXRD32(adapter, CRB_XG_STATE_P3);
1756 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1757 linkup = (val == XG_LINK_UP_P3);
1758 } else {
1759 val = NXRD32(adapter, CRB_XG_STATE);
1760 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1761 linkup = (val >> port) & 1;
1762 else {
1763 val = (val >> port*8) & 0xff;
1764 linkup = (val == XG_LINK_UP);
1765 }
1766 }
1767
1768 netxen_advert_link_change(adapter, linkup);
1769 }
1770
1771 static void netxen_nic_thermal_shutdown(struct netxen_adapter *adapter)
1772 {
1773 struct net_device *netdev = adapter->netdev;
1774
1775 netif_device_detach(netdev);
1776 netxen_nic_down(adapter, netdev);
1777 netxen_nic_detach(adapter);
1778 }
1779
1780 static void netxen_watchdog(unsigned long v)
1781 {
1782 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1783
1784 if (netxen_nic_check_temp(adapter))
1785 goto do_sched;
1786
1787 if (!adapter->has_link_events) {
1788 netxen_nic_handle_phy_intr(adapter);
1789
1790 if (adapter->link_changed)
1791 goto do_sched;
1792 }
1793
1794 if (netif_running(adapter->netdev))
1795 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1796
1797 return;
1798
1799 do_sched:
1800 schedule_work(&adapter->watchdog_task);
1801 }
1802
1803 void netxen_watchdog_task(struct work_struct *work)
1804 {
1805 struct netxen_adapter *adapter =
1806 container_of(work, struct netxen_adapter, watchdog_task);
1807
1808 if (adapter->temp == NX_TEMP_PANIC) {
1809 netxen_nic_thermal_shutdown(adapter);
1810 return;
1811 }
1812
1813 if (adapter->link_changed)
1814 netxen_nic_set_link_parameters(adapter);
1815
1816 if (netif_running(adapter->netdev))
1817 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1818 }
1819
1820 static void netxen_tx_timeout(struct net_device *netdev)
1821 {
1822 struct netxen_adapter *adapter = netdev_priv(netdev);
1823
1824 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1825 schedule_work(&adapter->tx_timeout_task);
1826 }
1827
1828 static void netxen_reset_task(struct work_struct *work)
1829 {
1830 struct netxen_adapter *adapter =
1831 container_of(work, struct netxen_adapter, tx_timeout_task);
1832
1833 if (!netif_running(adapter->netdev))
1834 return;
1835
1836 netxen_napi_disable(adapter);
1837
1838 adapter->netdev->trans_start = jiffies;
1839
1840 netxen_napi_enable(adapter);
1841 netif_wake_queue(adapter->netdev);
1842 }
1843
1844 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1845 {
1846 struct netxen_adapter *adapter = netdev_priv(netdev);
1847 struct net_device_stats *stats = &adapter->net_stats;
1848
1849 memset(stats, 0, sizeof(*stats));
1850
1851 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1852 stats->tx_packets = adapter->stats.xmitfinished;
1853 stats->rx_bytes = adapter->stats.rxbytes;
1854 stats->tx_bytes = adapter->stats.txbytes;
1855 stats->rx_dropped = adapter->stats.rxdropped;
1856 stats->tx_dropped = adapter->stats.txdropped;
1857
1858 return stats;
1859 }
1860
1861 static irqreturn_t netxen_intr(int irq, void *data)
1862 {
1863 struct nx_host_sds_ring *sds_ring = data;
1864 struct netxen_adapter *adapter = sds_ring->adapter;
1865 u32 status = 0;
1866
1867 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1868
1869 if (!(status & adapter->legacy_intr.int_vec_bit))
1870 return IRQ_NONE;
1871
1872 if (adapter->ahw.revision_id >= NX_P3_B1) {
1873 /* check interrupt state machine, to be sure */
1874 status = adapter->pci_read_immediate(adapter,
1875 ISR_INT_STATE_REG);
1876 if (!ISR_LEGACY_INT_TRIGGERED(status))
1877 return IRQ_NONE;
1878
1879 } else {
1880 unsigned long our_int = 0;
1881
1882 our_int = NXRD32(adapter, CRB_INT_VECTOR);
1883
1884 /* not our interrupt */
1885 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1886 return IRQ_NONE;
1887
1888 /* claim interrupt */
1889 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
1890 }
1891
1892 /* clear interrupt */
1893 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1894 netxen_nic_disable_int(sds_ring);
1895
1896 adapter->pci_write_immediate(adapter,
1897 adapter->legacy_intr.tgt_status_reg,
1898 0xffffffff);
1899 /* read twice to ensure write is flushed */
1900 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1901 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1902
1903 napi_schedule(&sds_ring->napi);
1904
1905 return IRQ_HANDLED;
1906 }
1907
1908 static irqreturn_t netxen_msi_intr(int irq, void *data)
1909 {
1910 struct nx_host_sds_ring *sds_ring = data;
1911 struct netxen_adapter *adapter = sds_ring->adapter;
1912
1913 /* clear interrupt */
1914 adapter->pci_write_immediate(adapter,
1915 adapter->msi_tgt_status, 0xffffffff);
1916
1917 napi_schedule(&sds_ring->napi);
1918 return IRQ_HANDLED;
1919 }
1920
1921 static irqreturn_t netxen_msix_intr(int irq, void *data)
1922 {
1923 struct nx_host_sds_ring *sds_ring = data;
1924
1925 napi_schedule(&sds_ring->napi);
1926 return IRQ_HANDLED;
1927 }
1928
1929 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1930 {
1931 struct nx_host_sds_ring *sds_ring =
1932 container_of(napi, struct nx_host_sds_ring, napi);
1933
1934 struct netxen_adapter *adapter = sds_ring->adapter;
1935
1936 int tx_complete;
1937 int work_done;
1938
1939 tx_complete = netxen_process_cmd_ring(adapter);
1940
1941 work_done = netxen_process_rcv_ring(sds_ring, budget);
1942
1943 if ((work_done < budget) && tx_complete) {
1944 napi_complete(&sds_ring->napi);
1945 if (netif_running(adapter->netdev))
1946 netxen_nic_enable_int(sds_ring);
1947 }
1948
1949 return work_done;
1950 }
1951
1952 #ifdef CONFIG_NET_POLL_CONTROLLER
1953 static void netxen_nic_poll_controller(struct net_device *netdev)
1954 {
1955 struct netxen_adapter *adapter = netdev_priv(netdev);
1956 disable_irq(adapter->irq);
1957 netxen_intr(adapter->irq, adapter);
1958 enable_irq(adapter->irq);
1959 }
1960 #endif
1961
1962 #ifdef CONFIG_INET
1963
1964 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
1965
1966 static int
1967 netxen_destip_supported(struct netxen_adapter *adapter)
1968 {
1969 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1970 return 0;
1971
1972 if (adapter->ahw.cut_through)
1973 return 0;
1974
1975 return 1;
1976 }
1977
1978 static int netxen_netdev_event(struct notifier_block *this,
1979 unsigned long event, void *ptr)
1980 {
1981 struct netxen_adapter *adapter;
1982 struct net_device *dev = (struct net_device *)ptr;
1983 struct in_device *indev;
1984
1985 recheck:
1986 if (dev == NULL)
1987 goto done;
1988
1989 if (dev->priv_flags & IFF_802_1Q_VLAN) {
1990 dev = vlan_dev_real_dev(dev);
1991 goto recheck;
1992 }
1993
1994 if (!is_netxen_netdev(dev))
1995 goto done;
1996
1997 adapter = netdev_priv(dev);
1998
1999 if (!adapter || !netxen_destip_supported(adapter))
2000 goto done;
2001
2002 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2003 goto done;
2004
2005 indev = in_dev_get(dev);
2006 if (!indev)
2007 goto done;
2008
2009 for_ifa(indev) {
2010 switch (event) {
2011 case NETDEV_UP:
2012 netxen_config_ipaddr(adapter,
2013 ifa->ifa_address, NX_IP_UP);
2014 break;
2015 case NETDEV_DOWN:
2016 netxen_config_ipaddr(adapter,
2017 ifa->ifa_address, NX_IP_DOWN);
2018 break;
2019 default:
2020 break;
2021 }
2022 } endfor_ifa(indev);
2023
2024 in_dev_put(indev);
2025 done:
2026 return NOTIFY_DONE;
2027 }
2028
2029 static int
2030 netxen_inetaddr_event(struct notifier_block *this,
2031 unsigned long event, void *ptr)
2032 {
2033 struct netxen_adapter *adapter;
2034 struct net_device *dev;
2035
2036 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2037
2038 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2039
2040 recheck:
2041 if (dev == NULL || !netif_running(dev))
2042 goto done;
2043
2044 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2045 dev = vlan_dev_real_dev(dev);
2046 goto recheck;
2047 }
2048
2049 if (!is_netxen_netdev(dev))
2050 goto done;
2051
2052 adapter = netdev_priv(dev);
2053
2054 if (!adapter || !netxen_destip_supported(adapter))
2055 goto done;
2056
2057 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2058 goto done;
2059
2060 switch (event) {
2061 case NETDEV_UP:
2062 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2063 break;
2064 case NETDEV_DOWN:
2065 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2066 break;
2067 default:
2068 break;
2069 }
2070
2071 done:
2072 return NOTIFY_DONE;
2073 }
2074
2075 static struct notifier_block netxen_netdev_cb = {
2076 .notifier_call = netxen_netdev_event,
2077 };
2078
2079 static struct notifier_block netxen_inetaddr_cb = {
2080 .notifier_call = netxen_inetaddr_event,
2081 };
2082 #endif
2083
2084 static struct pci_driver netxen_driver = {
2085 .name = netxen_nic_driver_name,
2086 .id_table = netxen_pci_tbl,
2087 .probe = netxen_nic_probe,
2088 .remove = __devexit_p(netxen_nic_remove),
2089 #ifdef CONFIG_PM
2090 .suspend = netxen_nic_suspend,
2091 .resume = netxen_nic_resume,
2092 #endif
2093 .shutdown = netxen_nic_shutdown
2094 };
2095
2096 static int __init netxen_init_module(void)
2097 {
2098 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2099
2100 #ifdef CONFIG_INET
2101 register_netdevice_notifier(&netxen_netdev_cb);
2102 register_inetaddr_notifier(&netxen_inetaddr_cb);
2103 #endif
2104
2105 return pci_register_driver(&netxen_driver);
2106 }
2107
2108 module_init(netxen_init_module);
2109
2110 static void __exit netxen_exit_module(void)
2111 {
2112 pci_unregister_driver(&netxen_driver);
2113
2114 #ifdef CONFIG_INET
2115 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2116 unregister_netdevice_notifier(&netxen_netdev_cb);
2117 #endif
2118 }
2119
2120 module_exit(netxen_exit_module);
Linux kernel - Deliverables
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