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23e5264c8ae68f1a185b07d98859a6145995d22c
[deliverable/linux.git] / drivers / net / netxen / netxen_nic_main.c
1 /*
2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3 * Copyright (C) 2009 - QLogic Corporation.
4 * All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
19 * MA 02111-1307, USA.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.
23 *
24 */
25
26 #include <linux/vmalloc.h>
27 #include <linux/interrupt.h>
28 #include "netxen_nic_hw.h"
29
30 #include "netxen_nic.h"
31
32 #include <linux/dma-mapping.h>
33 #include <linux/if_vlan.h>
34 #include <net/ip.h>
35 #include <linux/ipv6.h>
36 #include <linux/inetdevice.h>
37 #include <linux/sysfs.h>
38
39 MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Converged Ethernet Driver");
40 MODULE_LICENSE("GPL");
41 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
42
43 char netxen_nic_driver_name[] = "netxen_nic";
44 static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
45 NETXEN_NIC_LINUX_VERSIONID;
46
47 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
48
49 /* Default to restricted 1G auto-neg mode */
50 static int wol_port_mode = 5;
51
52 static int use_msi = 1;
53
54 static int use_msi_x = 1;
55
56 static unsigned long auto_fw_reset = AUTO_FW_RESET_ENABLED;
57
58 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
59 const struct pci_device_id *ent);
60 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
61 static int netxen_nic_open(struct net_device *netdev);
62 static int netxen_nic_close(struct net_device *netdev);
63 static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
64 struct net_device *);
65 static void netxen_tx_timeout(struct net_device *netdev);
66 static void netxen_tx_timeout_task(struct work_struct *work);
67 static void netxen_fw_poll_work(struct work_struct *work);
68 static void netxen_schedule_work(struct netxen_adapter *adapter,
69 work_func_t func, int delay);
70 static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
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);
74 #endif
75
76 static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
77 static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
78 static void netxen_create_diag_entries(struct netxen_adapter *adapter);
79 static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
80
81 static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
82 static int netxen_can_start_firmware(struct netxen_adapter *adapter);
83
84 static irqreturn_t netxen_intr(int irq, void *data);
85 static irqreturn_t netxen_msi_intr(int irq, void *data);
86 static irqreturn_t netxen_msix_intr(int irq, void *data);
87
88 static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
89
90 /* PCI Device ID Table */
91 #define ENTRY(device) \
92 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
93 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
94 #define ENTRY2(device) \
95 {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, (device)), \
96 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
97
98 #define PCI_DEVICE_ID_QLOGIC_QLE824X 0x8020
99
100 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
101 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
102 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
103 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
104 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
105 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
106 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
107 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
108 ENTRY(PCI_DEVICE_ID_NX3031),
109 ENTRY2(PCI_DEVICE_ID_QLOGIC_QLE824X),
110 {0,}
111 };
112
113 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
114
115 static uint32_t crb_cmd_producer[4] = {
116 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
117 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
118 };
119
120 void
121 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
122 struct nx_host_tx_ring *tx_ring)
123 {
124 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
125
126 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
127 netif_stop_queue(adapter->netdev);
128 smp_mb();
129 }
130 }
131
132 static uint32_t crb_cmd_consumer[4] = {
133 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
134 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
135 };
136
137 static inline void
138 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
139 struct nx_host_tx_ring *tx_ring)
140 {
141 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
142 }
143
144 static uint32_t msi_tgt_status[8] = {
145 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
146 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
147 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
148 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
149 };
150
151 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
152
153 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
154 {
155 struct netxen_adapter *adapter = sds_ring->adapter;
156
157 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
158 }
159
160 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
161 {
162 struct netxen_adapter *adapter = sds_ring->adapter;
163
164 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
165
166 if (!NETXEN_IS_MSI_FAMILY(adapter))
167 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
168 }
169
170 static int
171 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
172 {
173 int size = sizeof(struct nx_host_sds_ring) * count;
174
175 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
176
177 return (recv_ctx->sds_rings == NULL);
178 }
179
180 static void
181 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
182 {
183 if (recv_ctx->sds_rings != NULL)
184 kfree(recv_ctx->sds_rings);
185
186 recv_ctx->sds_rings = NULL;
187 }
188
189 static int
190 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
191 {
192 int ring;
193 struct nx_host_sds_ring *sds_ring;
194 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
195
196 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
197 return -ENOMEM;
198
199 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
200 sds_ring = &recv_ctx->sds_rings[ring];
201 netif_napi_add(netdev, &sds_ring->napi,
202 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
203 }
204
205 return 0;
206 }
207
208 static void
209 netxen_napi_del(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 netif_napi_del(&sds_ring->napi);
218 }
219
220 netxen_free_sds_rings(&adapter->recv_ctx);
221 }
222
223 static void
224 netxen_napi_enable(struct netxen_adapter *adapter)
225 {
226 int ring;
227 struct nx_host_sds_ring *sds_ring;
228 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
229
230 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
231 sds_ring = &recv_ctx->sds_rings[ring];
232 napi_enable(&sds_ring->napi);
233 netxen_nic_enable_int(sds_ring);
234 }
235 }
236
237 static void
238 netxen_napi_disable(struct netxen_adapter *adapter)
239 {
240 int ring;
241 struct nx_host_sds_ring *sds_ring;
242 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
243
244 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
245 sds_ring = &recv_ctx->sds_rings[ring];
246 netxen_nic_disable_int(sds_ring);
247 napi_synchronize(&sds_ring->napi);
248 napi_disable(&sds_ring->napi);
249 }
250 }
251
252 static int nx_set_dma_mask(struct netxen_adapter *adapter)
253 {
254 struct pci_dev *pdev = adapter->pdev;
255 uint64_t mask, cmask;
256
257 adapter->pci_using_dac = 0;
258
259 mask = DMA_BIT_MASK(32);
260 cmask = DMA_BIT_MASK(32);
261
262 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
263 #ifndef CONFIG_IA64
264 mask = DMA_BIT_MASK(35);
265 #endif
266 } else {
267 mask = DMA_BIT_MASK(39);
268 cmask = mask;
269 }
270
271 if (pci_set_dma_mask(pdev, mask) == 0 &&
272 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
273 adapter->pci_using_dac = 1;
274 return 0;
275 }
276
277 return -EIO;
278 }
279
280 /* Update addressable range if firmware supports it */
281 static int
282 nx_update_dma_mask(struct netxen_adapter *adapter)
283 {
284 int change, shift, err;
285 uint64_t mask, old_mask, old_cmask;
286 struct pci_dev *pdev = adapter->pdev;
287
288 change = 0;
289
290 shift = NXRD32(adapter, CRB_DMA_SHIFT);
291 if (shift > 32)
292 return 0;
293
294 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
295 change = 1;
296 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
297 change = 1;
298
299 if (change) {
300 old_mask = pdev->dma_mask;
301 old_cmask = pdev->dev.coherent_dma_mask;
302
303 mask = DMA_BIT_MASK(32+shift);
304
305 err = pci_set_dma_mask(pdev, mask);
306 if (err)
307 goto err_out;
308
309 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
310
311 err = pci_set_consistent_dma_mask(pdev, mask);
312 if (err)
313 goto err_out;
314 }
315 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
316 }
317
318 return 0;
319
320 err_out:
321 pci_set_dma_mask(pdev, old_mask);
322 pci_set_consistent_dma_mask(pdev, old_cmask);
323 return err;
324 }
325
326 static int
327 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
328 {
329 u32 val, timeout;
330
331 if (first_boot == 0x55555555) {
332 /* This is the first boot after power up */
333 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
334
335 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
336 return 0;
337
338 /* PCI bus master workaround */
339 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
340 if (!(first_boot & 0x4)) {
341 first_boot |= 0x4;
342 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
343 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
344 }
345
346 /* This is the first boot after power up */
347 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
348 if (first_boot != 0x80000f) {
349 /* clear the register for future unloads/loads */
350 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
351 return -EIO;
352 }
353
354 /* Start P2 boot loader */
355 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
356 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
357 timeout = 0;
358 do {
359 msleep(1);
360 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
361
362 if (++timeout > 5000)
363 return -EIO;
364
365 } while (val == NETXEN_BDINFO_MAGIC);
366 }
367 return 0;
368 }
369
370 static void netxen_set_port_mode(struct netxen_adapter *adapter)
371 {
372 u32 val, data;
373
374 val = adapter->ahw.board_type;
375 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
376 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
377 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
378 data = NETXEN_PORT_MODE_802_3_AP;
379 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
380 } else if (port_mode == NETXEN_PORT_MODE_XG) {
381 data = NETXEN_PORT_MODE_XG;
382 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
383 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
384 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
385 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
386 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
387 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
388 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
389 } else {
390 data = NETXEN_PORT_MODE_AUTO_NEG;
391 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
392 }
393
394 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
395 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
396 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
397 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
398 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
399 }
400 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
401 }
402 }
403
404 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
405 {
406 u32 control;
407 int pos;
408
409 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
410 if (pos) {
411 pci_read_config_dword(pdev, pos, &control);
412 if (enable)
413 control |= PCI_MSIX_FLAGS_ENABLE;
414 else
415 control = 0;
416 pci_write_config_dword(pdev, pos, control);
417 }
418 }
419
420 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
421 {
422 int i;
423
424 for (i = 0; i < count; i++)
425 adapter->msix_entries[i].entry = i;
426 }
427
428 static int
429 netxen_read_mac_addr(struct netxen_adapter *adapter)
430 {
431 int i;
432 unsigned char *p;
433 __le64 mac_addr;
434 struct net_device *netdev = adapter->netdev;
435 struct pci_dev *pdev = adapter->pdev;
436
437 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
438 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
439 return -EIO;
440 } else {
441 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
442 return -EIO;
443 }
444
445 p = (unsigned char *)&mac_addr;
446 for (i = 0; i < 6; i++)
447 netdev->dev_addr[i] = *(p + 5 - i);
448
449 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
450
451 /* set station address */
452
453 if (!is_valid_ether_addr(netdev->perm_addr))
454 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
455
456 return 0;
457 }
458
459 int netxen_nic_set_mac(struct net_device *netdev, void *p)
460 {
461 struct netxen_adapter *adapter = netdev_priv(netdev);
462 struct sockaddr *addr = p;
463
464 if (!is_valid_ether_addr(addr->sa_data))
465 return -EINVAL;
466
467 if (netif_running(netdev)) {
468 netif_device_detach(netdev);
469 netxen_napi_disable(adapter);
470 }
471
472 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
473 adapter->macaddr_set(adapter, addr->sa_data);
474
475 if (netif_running(netdev)) {
476 netif_device_attach(netdev);
477 netxen_napi_enable(adapter);
478 }
479 return 0;
480 }
481
482 static void netxen_set_multicast_list(struct net_device *dev)
483 {
484 struct netxen_adapter *adapter = netdev_priv(dev);
485
486 adapter->set_multi(dev);
487 }
488
489 static const struct net_device_ops netxen_netdev_ops = {
490 .ndo_open = netxen_nic_open,
491 .ndo_stop = netxen_nic_close,
492 .ndo_start_xmit = netxen_nic_xmit_frame,
493 .ndo_get_stats = netxen_nic_get_stats,
494 .ndo_validate_addr = eth_validate_addr,
495 .ndo_set_multicast_list = netxen_set_multicast_list,
496 .ndo_set_mac_address = netxen_nic_set_mac,
497 .ndo_change_mtu = netxen_nic_change_mtu,
498 .ndo_tx_timeout = netxen_tx_timeout,
499 #ifdef CONFIG_NET_POLL_CONTROLLER
500 .ndo_poll_controller = netxen_nic_poll_controller,
501 #endif
502 };
503
504 static void
505 netxen_setup_intr(struct netxen_adapter *adapter)
506 {
507 struct netxen_legacy_intr_set *legacy_intrp;
508 struct pci_dev *pdev = adapter->pdev;
509 int err, num_msix;
510
511 if (adapter->rss_supported) {
512 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
513 MSIX_ENTRIES_PER_ADAPTER : 2;
514 } else
515 num_msix = 1;
516
517 adapter->max_sds_rings = 1;
518
519 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
520
521 if (adapter->ahw.revision_id >= NX_P3_B0)
522 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
523 else
524 legacy_intrp = &legacy_intr[0];
525
526 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
527 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
528 legacy_intrp->tgt_status_reg);
529 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
530 legacy_intrp->tgt_mask_reg);
531 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
532 legacy_intrp->pci_int_reg);
533 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
534
535 if (adapter->ahw.revision_id >= NX_P3_B1)
536 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
537 ISR_INT_STATE_REG);
538 else
539 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
540 CRB_INT_VECTOR);
541
542 netxen_set_msix_bit(pdev, 0);
543
544 if (adapter->msix_supported) {
545
546 netxen_init_msix_entries(adapter, num_msix);
547 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
548 if (err == 0) {
549 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
550 netxen_set_msix_bit(pdev, 1);
551
552 if (adapter->rss_supported)
553 adapter->max_sds_rings = num_msix;
554
555 dev_info(&pdev->dev, "using msi-x interrupts\n");
556 return;
557 }
558
559 if (err > 0)
560 pci_disable_msix(pdev);
561
562 /* fall through for msi */
563 }
564
565 if (use_msi && !pci_enable_msi(pdev)) {
566 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
567 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
568 msi_tgt_status[adapter->ahw.pci_func]);
569 dev_info(&pdev->dev, "using msi interrupts\n");
570 adapter->msix_entries[0].vector = pdev->irq;
571 return;
572 }
573
574 dev_info(&pdev->dev, "using legacy interrupts\n");
575 adapter->msix_entries[0].vector = pdev->irq;
576 }
577
578 static void
579 netxen_teardown_intr(struct netxen_adapter *adapter)
580 {
581 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
582 pci_disable_msix(adapter->pdev);
583 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
584 pci_disable_msi(adapter->pdev);
585 }
586
587 static void
588 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
589 {
590 if (adapter->ahw.db_base != NULL)
591 iounmap(adapter->ahw.db_base);
592 if (adapter->ahw.pci_base0 != NULL)
593 iounmap(adapter->ahw.pci_base0);
594 if (adapter->ahw.pci_base1 != NULL)
595 iounmap(adapter->ahw.pci_base1);
596 if (adapter->ahw.pci_base2 != NULL)
597 iounmap(adapter->ahw.pci_base2);
598 }
599
600 static int
601 netxen_setup_pci_map(struct netxen_adapter *adapter)
602 {
603 void __iomem *mem_ptr0 = NULL;
604 void __iomem *mem_ptr1 = NULL;
605 void __iomem *mem_ptr2 = NULL;
606 void __iomem *db_ptr = NULL;
607
608 resource_size_t mem_base, db_base;
609 unsigned long mem_len, db_len = 0, pci_len0 = 0;
610
611 struct pci_dev *pdev = adapter->pdev;
612 int pci_func = adapter->ahw.pci_func;
613
614 int err = 0;
615
616 /*
617 * Set the CRB window to invalid. If any register in window 0 is
618 * accessed it should set the window to 0 and then reset it to 1.
619 */
620 adapter->ahw.crb_win = -1;
621 adapter->ahw.ocm_win = -1;
622
623 /* remap phys address */
624 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
625 mem_len = pci_resource_len(pdev, 0);
626
627 /* 128 Meg of memory */
628 if (mem_len == NETXEN_PCI_128MB_SIZE) {
629 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
630 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
631 SECOND_PAGE_GROUP_SIZE);
632 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
633 THIRD_PAGE_GROUP_SIZE);
634 pci_len0 = FIRST_PAGE_GROUP_SIZE;
635 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
636 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
637 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
638 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
639 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
640
641 mem_ptr0 = pci_ioremap_bar(pdev, 0);
642 if (mem_ptr0 == NULL) {
643 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
644 return -EIO;
645 }
646 pci_len0 = mem_len;
647 } else {
648 return -EIO;
649 }
650
651 netxen_setup_hwops(adapter);
652
653 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
654
655 adapter->ahw.pci_base0 = mem_ptr0;
656 adapter->ahw.pci_len0 = pci_len0;
657 adapter->ahw.pci_base1 = mem_ptr1;
658 adapter->ahw.pci_base2 = mem_ptr2;
659
660 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
661 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
662 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
663
664 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
665 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
666 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
667 }
668
669 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
670 goto skip_doorbell;
671
672 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
673 db_len = pci_resource_len(pdev, 4);
674
675 if (db_len == 0) {
676 printk(KERN_ERR "%s: doorbell is disabled\n",
677 netxen_nic_driver_name);
678 err = -EIO;
679 goto err_out;
680 }
681
682 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
683 if (!db_ptr) {
684 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
685 netxen_nic_driver_name);
686 err = -EIO;
687 goto err_out;
688 }
689
690 skip_doorbell:
691 adapter->ahw.db_base = db_ptr;
692 adapter->ahw.db_len = db_len;
693 return 0;
694
695 err_out:
696 netxen_cleanup_pci_map(adapter);
697 return err;
698 }
699
700 static void
701 netxen_check_options(struct netxen_adapter *adapter)
702 {
703 u32 fw_major, fw_minor, fw_build;
704 char brd_name[NETXEN_MAX_SHORT_NAME];
705 char serial_num[32];
706 int i, offset, val;
707 int *ptr32;
708 struct pci_dev *pdev = adapter->pdev;
709
710 adapter->driver_mismatch = 0;
711
712 ptr32 = (int *)&serial_num;
713 offset = NX_FW_SERIAL_NUM_OFFSET;
714 for (i = 0; i < 8; i++) {
715 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
716 dev_err(&pdev->dev, "error reading board info\n");
717 adapter->driver_mismatch = 1;
718 return;
719 }
720 ptr32[i] = cpu_to_le32(val);
721 offset += sizeof(u32);
722 }
723
724 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
725 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
726 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
727
728 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
729
730 if (adapter->portnum == 0) {
731 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
732
733 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
734 module_name(THIS_MODULE),
735 brd_name, serial_num, adapter->ahw.revision_id);
736 }
737
738 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
739 adapter->driver_mismatch = 1;
740 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
741 fw_major, fw_minor, fw_build);
742 return;
743 }
744
745 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
746 i = NXRD32(adapter, NETXEN_SRE_MISC);
747 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
748 }
749
750 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
751 fw_major, fw_minor, fw_build,
752 adapter->ahw.cut_through ? "cut-through" : "legacy");
753
754 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
755 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
756
757 adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
758
759 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
760 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
761 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
762 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
763 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
764 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
765 }
766
767 adapter->msix_supported = 0;
768 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
769 adapter->msix_supported = !!use_msi_x;
770 adapter->rss_supported = !!use_msi_x;
771 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
772 switch (adapter->ahw.board_type) {
773 case NETXEN_BRDTYPE_P2_SB31_10G:
774 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
775 adapter->msix_supported = !!use_msi_x;
776 adapter->rss_supported = !!use_msi_x;
777 break;
778 default:
779 break;
780 }
781 }
782
783 adapter->num_txd = MAX_CMD_DESCRIPTORS;
784
785 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
786 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
787 adapter->max_rds_rings = 3;
788 } else {
789 adapter->num_lro_rxd = 0;
790 adapter->max_rds_rings = 2;
791 }
792 }
793
794 static int
795 netxen_start_firmware(struct netxen_adapter *adapter)
796 {
797 int val, err, first_boot;
798 struct pci_dev *pdev = adapter->pdev;
799
800 /* required for NX2031 dummy dma */
801 err = nx_set_dma_mask(adapter);
802 if (err)
803 return err;
804
805 if (!netxen_can_start_firmware(adapter))
806 goto wait_init;
807
808 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
809
810 err = netxen_check_hw_init(adapter, first_boot);
811 if (err) {
812 dev_err(&pdev->dev, "error in init HW init sequence\n");
813 return err;
814 }
815
816 netxen_request_firmware(adapter);
817
818 err = netxen_need_fw_reset(adapter);
819 if (err < 0)
820 goto err_out;
821 if (err == 0)
822 goto ready;
823
824 if (first_boot != 0x55555555) {
825 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
826 netxen_pinit_from_rom(adapter);
827 msleep(1);
828 }
829
830 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
831 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
832 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
833
834 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
835 netxen_set_port_mode(adapter);
836
837 err = netxen_load_firmware(adapter);
838 if (err)
839 goto err_out;
840
841 netxen_release_firmware(adapter);
842
843 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
844
845 /* Initialize multicast addr pool owners */
846 val = 0x7654;
847 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
848 val |= 0x0f000000;
849 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
850
851 }
852
853 err = netxen_init_dummy_dma(adapter);
854 if (err)
855 goto err_out;
856
857 /*
858 * Tell the hardware our version number.
859 */
860 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
861 | ((_NETXEN_NIC_LINUX_MINOR << 8))
862 | (_NETXEN_NIC_LINUX_SUBVERSION);
863 NXWR32(adapter, CRB_DRIVER_VERSION, val);
864
865 ready:
866 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
867
868 wait_init:
869 /* Handshake with the card before we register the devices. */
870 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
871 if (err) {
872 netxen_free_dummy_dma(adapter);
873 goto err_out;
874 }
875
876 nx_update_dma_mask(adapter);
877
878 netxen_check_options(adapter);
879
880 adapter->need_fw_reset = 0;
881
882 /* fall through and release firmware */
883
884 err_out:
885 netxen_release_firmware(adapter);
886 return err;
887 }
888
889 static int
890 netxen_nic_request_irq(struct netxen_adapter *adapter)
891 {
892 irq_handler_t handler;
893 struct nx_host_sds_ring *sds_ring;
894 int err, ring;
895
896 unsigned long flags = IRQF_SAMPLE_RANDOM;
897 struct net_device *netdev = adapter->netdev;
898 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
899
900 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
901 handler = netxen_msix_intr;
902 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
903 handler = netxen_msi_intr;
904 else {
905 flags |= IRQF_SHARED;
906 handler = netxen_intr;
907 }
908 adapter->irq = netdev->irq;
909
910 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
911 sds_ring = &recv_ctx->sds_rings[ring];
912 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
913 err = request_irq(sds_ring->irq, handler,
914 flags, sds_ring->name, sds_ring);
915 if (err)
916 return err;
917 }
918
919 return 0;
920 }
921
922 static void
923 netxen_nic_free_irq(struct netxen_adapter *adapter)
924 {
925 int ring;
926 struct nx_host_sds_ring *sds_ring;
927
928 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
929
930 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
931 sds_ring = &recv_ctx->sds_rings[ring];
932 free_irq(sds_ring->irq, sds_ring);
933 }
934 }
935
936 static void
937 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
938 {
939 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
940 adapter->coal.normal.data.rx_time_us =
941 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
942 adapter->coal.normal.data.rx_packets =
943 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
944 adapter->coal.normal.data.tx_time_us =
945 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
946 adapter->coal.normal.data.tx_packets =
947 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
948 }
949
950 static int
951 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
952 {
953 int err;
954
955 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
956 return -EIO;
957
958 err = adapter->init_port(adapter, adapter->physical_port);
959 if (err) {
960 printk(KERN_ERR "%s: Failed to initialize port %d\n",
961 netxen_nic_driver_name, adapter->portnum);
962 return err;
963 }
964 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
965 adapter->macaddr_set(adapter, netdev->dev_addr);
966
967 adapter->set_multi(netdev);
968 adapter->set_mtu(adapter, netdev->mtu);
969
970 adapter->ahw.linkup = 0;
971
972 if (adapter->max_sds_rings > 1)
973 netxen_config_rss(adapter, 1);
974
975 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
976 netxen_config_intr_coalesce(adapter);
977
978 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
979 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
980
981 netxen_napi_enable(adapter);
982
983 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
984 netxen_linkevent_request(adapter, 1);
985 else
986 netxen_nic_set_link_parameters(adapter);
987
988 set_bit(__NX_DEV_UP, &adapter->state);
989 return 0;
990 }
991
992 static void
993 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
994 {
995 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
996 return;
997
998 clear_bit(__NX_DEV_UP, &adapter->state);
999
1000 spin_lock(&adapter->tx_clean_lock);
1001 netif_carrier_off(netdev);
1002 netif_tx_disable(netdev);
1003
1004 if (adapter->stop_port)
1005 adapter->stop_port(adapter);
1006
1007 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1008 netxen_p3_free_mac_list(adapter);
1009
1010 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1011
1012 netxen_napi_disable(adapter);
1013
1014 netxen_release_tx_buffers(adapter);
1015 spin_unlock(&adapter->tx_clean_lock);
1016 }
1017
1018
1019 static int
1020 netxen_nic_attach(struct netxen_adapter *adapter)
1021 {
1022 struct net_device *netdev = adapter->netdev;
1023 struct pci_dev *pdev = adapter->pdev;
1024 int err, ring;
1025 struct nx_host_rds_ring *rds_ring;
1026 struct nx_host_tx_ring *tx_ring;
1027
1028 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1029 return 0;
1030
1031 err = netxen_init_firmware(adapter);
1032 if (err)
1033 return err;
1034
1035 err = netxen_napi_add(adapter, netdev);
1036 if (err)
1037 return err;
1038
1039 err = netxen_alloc_sw_resources(adapter);
1040 if (err) {
1041 printk(KERN_ERR "%s: Error in setting sw resources\n",
1042 netdev->name);
1043 return err;
1044 }
1045
1046 err = netxen_alloc_hw_resources(adapter);
1047 if (err) {
1048 printk(KERN_ERR "%s: Error in setting hw resources\n",
1049 netdev->name);
1050 goto err_out_free_sw;
1051 }
1052
1053 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1054 tx_ring = adapter->tx_ring;
1055 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1056 crb_cmd_producer[adapter->portnum]);
1057 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1058 crb_cmd_consumer[adapter->portnum]);
1059
1060 tx_ring->producer = 0;
1061 tx_ring->sw_consumer = 0;
1062
1063 netxen_nic_update_cmd_producer(adapter, tx_ring);
1064 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1065 }
1066
1067 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1068 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1069 netxen_post_rx_buffers(adapter, ring, rds_ring);
1070 }
1071
1072 err = netxen_nic_request_irq(adapter);
1073 if (err) {
1074 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1075 netdev->name);
1076 goto err_out_free_rxbuf;
1077 }
1078
1079 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1080 netxen_nic_init_coalesce_defaults(adapter);
1081
1082 netxen_create_sysfs_entries(adapter);
1083
1084 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1085 return 0;
1086
1087 err_out_free_rxbuf:
1088 netxen_release_rx_buffers(adapter);
1089 netxen_free_hw_resources(adapter);
1090 err_out_free_sw:
1091 netxen_free_sw_resources(adapter);
1092 return err;
1093 }
1094
1095 static void
1096 netxen_nic_detach(struct netxen_adapter *adapter)
1097 {
1098 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1099 return;
1100
1101 netxen_remove_sysfs_entries(adapter);
1102
1103 netxen_free_hw_resources(adapter);
1104 netxen_release_rx_buffers(adapter);
1105 netxen_nic_free_irq(adapter);
1106 netxen_napi_del(adapter);
1107 netxen_free_sw_resources(adapter);
1108
1109 adapter->is_up = 0;
1110 }
1111
1112 int
1113 netxen_nic_reset_context(struct netxen_adapter *adapter)
1114 {
1115 int err = 0;
1116 struct net_device *netdev = adapter->netdev;
1117
1118 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1119 return -EBUSY;
1120
1121 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1122
1123 netif_device_detach(netdev);
1124
1125 if (netif_running(netdev))
1126 netxen_nic_down(adapter, netdev);
1127
1128 netxen_nic_detach(adapter);
1129
1130 if (netif_running(netdev)) {
1131 err = netxen_nic_attach(adapter);
1132 if (!err)
1133 err = netxen_nic_up(adapter, netdev);
1134
1135 if (err)
1136 goto done;
1137 }
1138
1139 netif_device_attach(netdev);
1140 }
1141
1142 done:
1143 clear_bit(__NX_RESETTING, &adapter->state);
1144 return err;
1145 }
1146
1147 static int
1148 netxen_setup_netdev(struct netxen_adapter *adapter,
1149 struct net_device *netdev)
1150 {
1151 int err = 0;
1152 struct pci_dev *pdev = adapter->pdev;
1153
1154 adapter->rx_csum = 1;
1155 adapter->mc_enabled = 0;
1156 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1157 adapter->max_mc_count = 38;
1158 else
1159 adapter->max_mc_count = 16;
1160
1161 netdev->netdev_ops = &netxen_netdev_ops;
1162 netdev->watchdog_timeo = 2*HZ;
1163
1164 netxen_nic_change_mtu(netdev, netdev->mtu);
1165
1166 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1167
1168 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1169 netdev->features |= (NETIF_F_GRO);
1170 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1171
1172 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1173 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1174 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1175 }
1176
1177 if (adapter->pci_using_dac) {
1178 netdev->features |= NETIF_F_HIGHDMA;
1179 netdev->vlan_features |= NETIF_F_HIGHDMA;
1180 }
1181
1182 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1183 netdev->features |= (NETIF_F_HW_VLAN_TX);
1184
1185 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1186 netdev->features |= NETIF_F_LRO;
1187
1188 netdev->irq = adapter->msix_entries[0].vector;
1189
1190 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1191
1192 if (netxen_read_mac_addr(adapter))
1193 dev_warn(&pdev->dev, "failed to read mac addr\n");
1194
1195 netif_carrier_off(netdev);
1196 netif_stop_queue(netdev);
1197
1198 err = register_netdev(netdev);
1199 if (err) {
1200 dev_err(&pdev->dev, "failed to register net device\n");
1201 return err;
1202 }
1203
1204 return 0;
1205 }
1206
1207 static int __devinit
1208 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1209 {
1210 struct net_device *netdev = NULL;
1211 struct netxen_adapter *adapter = NULL;
1212 int i = 0, err;
1213 int pci_func_id = PCI_FUNC(pdev->devfn);
1214 uint8_t revision_id;
1215
1216 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1217 pr_warning("%s: chip revisions between 0x%x-0x%x"
1218 "will not be enabled.\n",
1219 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1220 return -ENODEV;
1221 }
1222
1223 if ((err = pci_enable_device(pdev)))
1224 return err;
1225
1226 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1227 err = -ENODEV;
1228 goto err_out_disable_pdev;
1229 }
1230
1231 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1232 goto err_out_disable_pdev;
1233
1234 pci_set_master(pdev);
1235
1236 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1237 if(!netdev) {
1238 dev_err(&pdev->dev, "failed to allocate net_device\n");
1239 err = -ENOMEM;
1240 goto err_out_free_res;
1241 }
1242
1243 SET_NETDEV_DEV(netdev, &pdev->dev);
1244
1245 adapter = netdev_priv(netdev);
1246 adapter->netdev = netdev;
1247 adapter->pdev = pdev;
1248 adapter->ahw.pci_func = pci_func_id;
1249
1250 revision_id = pdev->revision;
1251 adapter->ahw.revision_id = revision_id;
1252
1253 rwlock_init(&adapter->ahw.crb_lock);
1254 spin_lock_init(&adapter->ahw.mem_lock);
1255
1256 spin_lock_init(&adapter->tx_clean_lock);
1257 INIT_LIST_HEAD(&adapter->mac_list);
1258
1259 err = netxen_setup_pci_map(adapter);
1260 if (err)
1261 goto err_out_free_netdev;
1262
1263 /* This will be reset for mezz cards */
1264 adapter->portnum = pci_func_id;
1265
1266 err = netxen_nic_get_board_info(adapter);
1267 if (err) {
1268 dev_err(&pdev->dev, "Error getting board config info.\n");
1269 goto err_out_iounmap;
1270 }
1271
1272 /* Mezz cards have PCI function 0,2,3 enabled */
1273 switch (adapter->ahw.board_type) {
1274 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1275 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1276 if (pci_func_id >= 2)
1277 adapter->portnum = pci_func_id - 2;
1278 break;
1279 default:
1280 break;
1281 }
1282
1283 err = netxen_start_firmware(adapter);
1284 if (err)
1285 goto err_out_iounmap;
1286
1287 /*
1288 * See if the firmware gave us a virtual-physical port mapping.
1289 */
1290 adapter->physical_port = adapter->portnum;
1291 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1292 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1293 if (i != 0x55555555)
1294 adapter->physical_port = i;
1295 }
1296
1297 netxen_nic_clear_stats(adapter);
1298
1299 netxen_setup_intr(adapter);
1300
1301 err = netxen_setup_netdev(adapter, netdev);
1302 if (err)
1303 goto err_out_disable_msi;
1304
1305 pci_set_drvdata(pdev, adapter);
1306
1307 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1308
1309 switch (adapter->ahw.port_type) {
1310 case NETXEN_NIC_GBE:
1311 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1312 adapter->netdev->name);
1313 break;
1314 case NETXEN_NIC_XGBE:
1315 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1316 adapter->netdev->name);
1317 break;
1318 }
1319
1320 netxen_create_diag_entries(adapter);
1321
1322 return 0;
1323
1324 err_out_disable_msi:
1325 netxen_teardown_intr(adapter);
1326
1327 netxen_free_dummy_dma(adapter);
1328
1329 nx_decr_dev_ref_cnt(adapter);
1330
1331 err_out_iounmap:
1332 netxen_cleanup_pci_map(adapter);
1333
1334 err_out_free_netdev:
1335 free_netdev(netdev);
1336
1337 err_out_free_res:
1338 pci_release_regions(pdev);
1339
1340 err_out_disable_pdev:
1341 pci_set_drvdata(pdev, NULL);
1342 pci_disable_device(pdev);
1343 return err;
1344 }
1345
1346 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1347 {
1348 struct netxen_adapter *adapter;
1349 struct net_device *netdev;
1350
1351 adapter = pci_get_drvdata(pdev);
1352 if (adapter == NULL)
1353 return;
1354
1355 netdev = adapter->netdev;
1356
1357 netxen_cancel_fw_work(adapter);
1358
1359 unregister_netdev(netdev);
1360
1361 cancel_work_sync(&adapter->tx_timeout_task);
1362
1363 netxen_nic_detach(adapter);
1364
1365 nx_decr_dev_ref_cnt(adapter);
1366
1367 if (adapter->portnum == 0)
1368 netxen_free_dummy_dma(adapter);
1369
1370 clear_bit(__NX_RESETTING, &adapter->state);
1371
1372 netxen_teardown_intr(adapter);
1373
1374 netxen_remove_diag_entries(adapter);
1375
1376 netxen_cleanup_pci_map(adapter);
1377
1378 netxen_release_firmware(adapter);
1379
1380 pci_release_regions(pdev);
1381 pci_disable_device(pdev);
1382 pci_set_drvdata(pdev, NULL);
1383
1384 free_netdev(netdev);
1385 }
1386 static int __netxen_nic_shutdown(struct pci_dev *pdev)
1387 {
1388 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1389 struct net_device *netdev = adapter->netdev;
1390 int retval;
1391
1392 netif_device_detach(netdev);
1393
1394 netxen_cancel_fw_work(adapter);
1395
1396 if (netif_running(netdev))
1397 netxen_nic_down(adapter, netdev);
1398
1399 cancel_work_sync(&adapter->tx_timeout_task);
1400
1401 netxen_nic_detach(adapter);
1402
1403 if (adapter->portnum == 0)
1404 netxen_free_dummy_dma(adapter);
1405
1406 nx_decr_dev_ref_cnt(adapter);
1407
1408 clear_bit(__NX_RESETTING, &adapter->state);
1409
1410 retval = pci_save_state(pdev);
1411 if (retval)
1412 return retval;
1413
1414 if (netxen_nic_wol_supported(adapter)) {
1415 pci_enable_wake(pdev, PCI_D3cold, 1);
1416 pci_enable_wake(pdev, PCI_D3hot, 1);
1417 }
1418
1419 pci_disable_device(pdev);
1420
1421 return 0;
1422 }
1423 static void netxen_nic_shutdown(struct pci_dev *pdev)
1424 {
1425 if (__netxen_nic_shutdown(pdev))
1426 return;
1427 }
1428 #ifdef CONFIG_PM
1429 static int
1430 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1431 {
1432 int retval;
1433
1434 retval = __netxen_nic_shutdown(pdev);
1435 if (retval)
1436 return retval;
1437
1438 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1439 return 0;
1440 }
1441
1442 static int
1443 netxen_nic_resume(struct pci_dev *pdev)
1444 {
1445 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1446 struct net_device *netdev = adapter->netdev;
1447 int err;
1448
1449 pci_set_power_state(pdev, PCI_D0);
1450 pci_restore_state(pdev);
1451
1452 err = pci_enable_device(pdev);
1453 if (err)
1454 return err;
1455
1456 adapter->ahw.crb_win = -1;
1457 adapter->ahw.ocm_win = -1;
1458
1459 err = netxen_start_firmware(adapter);
1460 if (err) {
1461 dev_err(&pdev->dev, "failed to start firmware\n");
1462 return err;
1463 }
1464
1465 if (netif_running(netdev)) {
1466 err = netxen_nic_attach(adapter);
1467 if (err)
1468 goto err_out;
1469
1470 err = netxen_nic_up(adapter, netdev);
1471 if (err)
1472 goto err_out_detach;
1473
1474 netif_device_attach(netdev);
1475
1476 netxen_config_indev_addr(netdev, NETDEV_UP);
1477 }
1478
1479 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1480 return 0;
1481
1482 err_out_detach:
1483 netxen_nic_detach(adapter);
1484 err_out:
1485 nx_decr_dev_ref_cnt(adapter);
1486 return err;
1487 }
1488 #endif
1489
1490 static int netxen_nic_open(struct net_device *netdev)
1491 {
1492 struct netxen_adapter *adapter = netdev_priv(netdev);
1493 int err = 0;
1494
1495 if (adapter->driver_mismatch)
1496 return -EIO;
1497
1498 err = netxen_nic_attach(adapter);
1499 if (err)
1500 return err;
1501
1502 err = netxen_nic_up(adapter, netdev);
1503 if (err)
1504 goto err_out;
1505
1506 netif_start_queue(netdev);
1507
1508 return 0;
1509
1510 err_out:
1511 netxen_nic_detach(adapter);
1512 return err;
1513 }
1514
1515 /*
1516 * netxen_nic_close - Disables a network interface entry point
1517 */
1518 static int netxen_nic_close(struct net_device *netdev)
1519 {
1520 struct netxen_adapter *adapter = netdev_priv(netdev);
1521
1522 netxen_nic_down(adapter, netdev);
1523 return 0;
1524 }
1525
1526 static void
1527 netxen_tso_check(struct net_device *netdev,
1528 struct nx_host_tx_ring *tx_ring,
1529 struct cmd_desc_type0 *first_desc,
1530 struct sk_buff *skb)
1531 {
1532 u8 opcode = TX_ETHER_PKT;
1533 __be16 protocol = skb->protocol;
1534 u16 flags = 0, vid = 0;
1535 u32 producer;
1536 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1537 struct cmd_desc_type0 *hwdesc;
1538 struct vlan_ethhdr *vh;
1539
1540 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1541
1542 vh = (struct vlan_ethhdr *)skb->data;
1543 protocol = vh->h_vlan_encapsulated_proto;
1544 flags = FLAGS_VLAN_TAGGED;
1545
1546 } else if (vlan_tx_tag_present(skb)) {
1547
1548 flags = FLAGS_VLAN_OOB;
1549 vid = vlan_tx_tag_get(skb);
1550 netxen_set_tx_vlan_tci(first_desc, vid);
1551 vlan_oob = 1;
1552 }
1553
1554 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1555 skb_shinfo(skb)->gso_size > 0) {
1556
1557 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1558
1559 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1560 first_desc->total_hdr_length = hdr_len;
1561 if (vlan_oob) {
1562 first_desc->total_hdr_length += VLAN_HLEN;
1563 first_desc->tcp_hdr_offset = VLAN_HLEN;
1564 first_desc->ip_hdr_offset = VLAN_HLEN;
1565 /* Only in case of TSO on vlan device */
1566 flags |= FLAGS_VLAN_TAGGED;
1567 }
1568
1569 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1570 TX_TCP_LSO6 : TX_TCP_LSO;
1571 tso = 1;
1572
1573 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1574 u8 l4proto;
1575
1576 if (protocol == cpu_to_be16(ETH_P_IP)) {
1577 l4proto = ip_hdr(skb)->protocol;
1578
1579 if (l4proto == IPPROTO_TCP)
1580 opcode = TX_TCP_PKT;
1581 else if(l4proto == IPPROTO_UDP)
1582 opcode = TX_UDP_PKT;
1583 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1584 l4proto = ipv6_hdr(skb)->nexthdr;
1585
1586 if (l4proto == IPPROTO_TCP)
1587 opcode = TX_TCPV6_PKT;
1588 else if(l4proto == IPPROTO_UDP)
1589 opcode = TX_UDPV6_PKT;
1590 }
1591 }
1592
1593 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1594 first_desc->ip_hdr_offset += skb_network_offset(skb);
1595 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1596
1597 if (!tso)
1598 return;
1599
1600 /* For LSO, we need to copy the MAC/IP/TCP headers into
1601 * the descriptor ring
1602 */
1603 producer = tx_ring->producer;
1604 copied = 0;
1605 offset = 2;
1606
1607 if (vlan_oob) {
1608 /* Create a TSO vlan header template for firmware */
1609
1610 hwdesc = &tx_ring->desc_head[producer];
1611 tx_ring->cmd_buf_arr[producer].skb = NULL;
1612
1613 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1614 hdr_len + VLAN_HLEN);
1615
1616 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1617 skb_copy_from_linear_data(skb, vh, 12);
1618 vh->h_vlan_proto = htons(ETH_P_8021Q);
1619 vh->h_vlan_TCI = htons(vid);
1620 skb_copy_from_linear_data_offset(skb, 12,
1621 (char *)vh + 16, copy_len - 16);
1622
1623 copied = copy_len - VLAN_HLEN;
1624 offset = 0;
1625
1626 producer = get_next_index(producer, tx_ring->num_desc);
1627 }
1628
1629 while (copied < hdr_len) {
1630
1631 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1632 (hdr_len - copied));
1633
1634 hwdesc = &tx_ring->desc_head[producer];
1635 tx_ring->cmd_buf_arr[producer].skb = NULL;
1636
1637 skb_copy_from_linear_data_offset(skb, copied,
1638 (char *)hwdesc + offset, copy_len);
1639
1640 copied += copy_len;
1641 offset = 0;
1642
1643 producer = get_next_index(producer, tx_ring->num_desc);
1644 }
1645
1646 tx_ring->producer = producer;
1647 barrier();
1648 }
1649
1650 static int
1651 netxen_map_tx_skb(struct pci_dev *pdev,
1652 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1653 {
1654 struct netxen_skb_frag *nf;
1655 struct skb_frag_struct *frag;
1656 int i, nr_frags;
1657 dma_addr_t map;
1658
1659 nr_frags = skb_shinfo(skb)->nr_frags;
1660 nf = &pbuf->frag_array[0];
1661
1662 map = pci_map_single(pdev, skb->data,
1663 skb_headlen(skb), PCI_DMA_TODEVICE);
1664 if (pci_dma_mapping_error(pdev, map))
1665 goto out_err;
1666
1667 nf->dma = map;
1668 nf->length = skb_headlen(skb);
1669
1670 for (i = 0; i < nr_frags; i++) {
1671 frag = &skb_shinfo(skb)->frags[i];
1672 nf = &pbuf->frag_array[i+1];
1673
1674 map = pci_map_page(pdev, frag->page, frag->page_offset,
1675 frag->size, PCI_DMA_TODEVICE);
1676 if (pci_dma_mapping_error(pdev, map))
1677 goto unwind;
1678
1679 nf->dma = map;
1680 nf->length = frag->size;
1681 }
1682
1683 return 0;
1684
1685 unwind:
1686 while (--i >= 0) {
1687 nf = &pbuf->frag_array[i+1];
1688 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1689 }
1690
1691 nf = &pbuf->frag_array[0];
1692 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1693
1694 out_err:
1695 return -ENOMEM;
1696 }
1697
1698 static inline void
1699 netxen_clear_cmddesc(u64 *desc)
1700 {
1701 desc[0] = 0ULL;
1702 desc[2] = 0ULL;
1703 }
1704
1705 static netdev_tx_t
1706 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1707 {
1708 struct netxen_adapter *adapter = netdev_priv(netdev);
1709 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1710 struct netxen_cmd_buffer *pbuf;
1711 struct netxen_skb_frag *buffrag;
1712 struct cmd_desc_type0 *hwdesc, *first_desc;
1713 struct pci_dev *pdev;
1714 int i, k;
1715
1716 u32 producer;
1717 int frag_count, no_of_desc;
1718 u32 num_txd = tx_ring->num_desc;
1719
1720 frag_count = skb_shinfo(skb)->nr_frags + 1;
1721
1722 /* 4 fragments per cmd des */
1723 no_of_desc = (frag_count + 3) >> 2;
1724
1725 if (unlikely(no_of_desc + 2 > netxen_tx_avail(tx_ring))) {
1726 netif_stop_queue(netdev);
1727 return NETDEV_TX_BUSY;
1728 }
1729
1730 producer = tx_ring->producer;
1731 pbuf = &tx_ring->cmd_buf_arr[producer];
1732
1733 pdev = adapter->pdev;
1734
1735 if (netxen_map_tx_skb(pdev, skb, pbuf))
1736 goto drop_packet;
1737
1738 pbuf->skb = skb;
1739 pbuf->frag_count = frag_count;
1740
1741 first_desc = hwdesc = &tx_ring->desc_head[producer];
1742 netxen_clear_cmddesc((u64 *)hwdesc);
1743
1744 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1745 netxen_set_tx_port(first_desc, adapter->portnum);
1746
1747 for (i = 0; i < frag_count; i++) {
1748
1749 k = i % 4;
1750
1751 if ((k == 0) && (i > 0)) {
1752 /* move to next desc.*/
1753 producer = get_next_index(producer, num_txd);
1754 hwdesc = &tx_ring->desc_head[producer];
1755 netxen_clear_cmddesc((u64 *)hwdesc);
1756 tx_ring->cmd_buf_arr[producer].skb = NULL;
1757 }
1758
1759 buffrag = &pbuf->frag_array[i];
1760
1761 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1762 switch (k) {
1763 case 0:
1764 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1765 break;
1766 case 1:
1767 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1768 break;
1769 case 2:
1770 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1771 break;
1772 case 3:
1773 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1774 break;
1775 }
1776 }
1777
1778 tx_ring->producer = get_next_index(producer, num_txd);
1779
1780 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1781
1782 netxen_nic_update_cmd_producer(adapter, tx_ring);
1783
1784 adapter->stats.txbytes += skb->len;
1785 adapter->stats.xmitcalled++;
1786
1787 return NETDEV_TX_OK;
1788
1789 drop_packet:
1790 adapter->stats.txdropped++;
1791 dev_kfree_skb_any(skb);
1792 return NETDEV_TX_OK;
1793 }
1794
1795 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1796 {
1797 struct net_device *netdev = adapter->netdev;
1798 uint32_t temp, temp_state, temp_val;
1799 int rv = 0;
1800
1801 temp = NXRD32(adapter, CRB_TEMP_STATE);
1802
1803 temp_state = nx_get_temp_state(temp);
1804 temp_val = nx_get_temp_val(temp);
1805
1806 if (temp_state == NX_TEMP_PANIC) {
1807 printk(KERN_ALERT
1808 "%s: Device temperature %d degrees C exceeds"
1809 " maximum allowed. Hardware has been shut down.\n",
1810 netdev->name, temp_val);
1811 rv = 1;
1812 } else if (temp_state == NX_TEMP_WARN) {
1813 if (adapter->temp == NX_TEMP_NORMAL) {
1814 printk(KERN_ALERT
1815 "%s: Device temperature %d degrees C "
1816 "exceeds operating range."
1817 " Immediate action needed.\n",
1818 netdev->name, temp_val);
1819 }
1820 } else {
1821 if (adapter->temp == NX_TEMP_WARN) {
1822 printk(KERN_INFO
1823 "%s: Device temperature is now %d degrees C"
1824 " in normal range.\n", netdev->name,
1825 temp_val);
1826 }
1827 }
1828 adapter->temp = temp_state;
1829 return rv;
1830 }
1831
1832 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1833 {
1834 struct net_device *netdev = adapter->netdev;
1835
1836 if (adapter->ahw.linkup && !linkup) {
1837 printk(KERN_INFO "%s: %s NIC Link is down\n",
1838 netxen_nic_driver_name, netdev->name);
1839 adapter->ahw.linkup = 0;
1840 if (netif_running(netdev)) {
1841 netif_carrier_off(netdev);
1842 netif_stop_queue(netdev);
1843 }
1844 adapter->link_changed = !adapter->has_link_events;
1845 } else if (!adapter->ahw.linkup && linkup) {
1846 printk(KERN_INFO "%s: %s NIC Link is up\n",
1847 netxen_nic_driver_name, netdev->name);
1848 adapter->ahw.linkup = 1;
1849 if (netif_running(netdev)) {
1850 netif_carrier_on(netdev);
1851 netif_wake_queue(netdev);
1852 }
1853 adapter->link_changed = !adapter->has_link_events;
1854 }
1855 }
1856
1857 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1858 {
1859 u32 val, port, linkup;
1860
1861 port = adapter->physical_port;
1862
1863 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1864 val = NXRD32(adapter, CRB_XG_STATE_P3);
1865 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1866 linkup = (val == XG_LINK_UP_P3);
1867 } else {
1868 val = NXRD32(adapter, CRB_XG_STATE);
1869 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1870 linkup = (val >> port) & 1;
1871 else {
1872 val = (val >> port*8) & 0xff;
1873 linkup = (val == XG_LINK_UP);
1874 }
1875 }
1876
1877 netxen_advert_link_change(adapter, linkup);
1878 }
1879
1880 static void netxen_tx_timeout(struct net_device *netdev)
1881 {
1882 struct netxen_adapter *adapter = netdev_priv(netdev);
1883
1884 if (test_bit(__NX_RESETTING, &adapter->state))
1885 return;
1886
1887 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1888 schedule_work(&adapter->tx_timeout_task);
1889 }
1890
1891 static void netxen_tx_timeout_task(struct work_struct *work)
1892 {
1893 struct netxen_adapter *adapter =
1894 container_of(work, struct netxen_adapter, tx_timeout_task);
1895
1896 if (!netif_running(adapter->netdev))
1897 return;
1898
1899 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1900 return;
1901
1902 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
1903 goto request_reset;
1904
1905 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1906 /* try to scrub interrupt */
1907 netxen_napi_disable(adapter);
1908
1909 adapter->netdev->trans_start = jiffies;
1910
1911 netxen_napi_enable(adapter);
1912
1913 netif_wake_queue(adapter->netdev);
1914
1915 clear_bit(__NX_RESETTING, &adapter->state);
1916
1917 } else {
1918 clear_bit(__NX_RESETTING, &adapter->state);
1919 if (!netxen_nic_reset_context(adapter)) {
1920 adapter->netdev->trans_start = jiffies;
1921 return;
1922 }
1923
1924 /* context reset failed, fall through for fw reset */
1925 }
1926
1927 request_reset:
1928 adapter->need_fw_reset = 1;
1929 clear_bit(__NX_RESETTING, &adapter->state);
1930 }
1931
1932 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1933 {
1934 struct netxen_adapter *adapter = netdev_priv(netdev);
1935 struct net_device_stats *stats = &netdev->stats;
1936
1937 memset(stats, 0, sizeof(*stats));
1938
1939 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1940 stats->tx_packets = adapter->stats.xmitfinished;
1941 stats->rx_bytes = adapter->stats.rxbytes;
1942 stats->tx_bytes = adapter->stats.txbytes;
1943 stats->rx_dropped = adapter->stats.rxdropped;
1944 stats->tx_dropped = adapter->stats.txdropped;
1945
1946 return stats;
1947 }
1948
1949 static irqreturn_t netxen_intr(int irq, void *data)
1950 {
1951 struct nx_host_sds_ring *sds_ring = data;
1952 struct netxen_adapter *adapter = sds_ring->adapter;
1953 u32 status = 0;
1954
1955 status = readl(adapter->isr_int_vec);
1956
1957 if (!(status & adapter->int_vec_bit))
1958 return IRQ_NONE;
1959
1960 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1961 /* check interrupt state machine, to be sure */
1962 status = readl(adapter->crb_int_state_reg);
1963 if (!ISR_LEGACY_INT_TRIGGERED(status))
1964 return IRQ_NONE;
1965
1966 } else {
1967 unsigned long our_int = 0;
1968
1969 our_int = readl(adapter->crb_int_state_reg);
1970
1971 /* not our interrupt */
1972 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1973 return IRQ_NONE;
1974
1975 /* claim interrupt */
1976 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
1977
1978 /* clear interrupt */
1979 netxen_nic_disable_int(sds_ring);
1980 }
1981
1982 writel(0xffffffff, adapter->tgt_status_reg);
1983 /* read twice to ensure write is flushed */
1984 readl(adapter->isr_int_vec);
1985 readl(adapter->isr_int_vec);
1986
1987 napi_schedule(&sds_ring->napi);
1988
1989 return IRQ_HANDLED;
1990 }
1991
1992 static irqreturn_t netxen_msi_intr(int irq, void *data)
1993 {
1994 struct nx_host_sds_ring *sds_ring = data;
1995 struct netxen_adapter *adapter = sds_ring->adapter;
1996
1997 /* clear interrupt */
1998 writel(0xffffffff, adapter->tgt_status_reg);
1999
2000 napi_schedule(&sds_ring->napi);
2001 return IRQ_HANDLED;
2002 }
2003
2004 static irqreturn_t netxen_msix_intr(int irq, void *data)
2005 {
2006 struct nx_host_sds_ring *sds_ring = data;
2007
2008 napi_schedule(&sds_ring->napi);
2009 return IRQ_HANDLED;
2010 }
2011
2012 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2013 {
2014 struct nx_host_sds_ring *sds_ring =
2015 container_of(napi, struct nx_host_sds_ring, napi);
2016
2017 struct netxen_adapter *adapter = sds_ring->adapter;
2018
2019 int tx_complete;
2020 int work_done;
2021
2022 tx_complete = netxen_process_cmd_ring(adapter);
2023
2024 work_done = netxen_process_rcv_ring(sds_ring, budget);
2025
2026 if ((work_done < budget) && tx_complete) {
2027 napi_complete(&sds_ring->napi);
2028 if (netif_running(adapter->netdev))
2029 netxen_nic_enable_int(sds_ring);
2030 }
2031
2032 return work_done;
2033 }
2034
2035 #ifdef CONFIG_NET_POLL_CONTROLLER
2036 static void netxen_nic_poll_controller(struct net_device *netdev)
2037 {
2038 struct netxen_adapter *adapter = netdev_priv(netdev);
2039 disable_irq(adapter->irq);
2040 netxen_intr(adapter->irq, adapter);
2041 enable_irq(adapter->irq);
2042 }
2043 #endif
2044
2045 static int
2046 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2047 {
2048 int count;
2049 if (netxen_api_lock(adapter))
2050 return -EIO;
2051
2052 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2053
2054 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2055
2056 netxen_api_unlock(adapter);
2057 return count;
2058 }
2059
2060 static int
2061 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2062 {
2063 int count;
2064 if (netxen_api_lock(adapter))
2065 return -EIO;
2066
2067 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2068 WARN_ON(count == 0);
2069
2070 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2071
2072 if (count == 0)
2073 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2074
2075 netxen_api_unlock(adapter);
2076 return count;
2077 }
2078
2079 static void
2080 nx_dev_request_reset(struct netxen_adapter *adapter)
2081 {
2082 u32 state;
2083
2084 if (netxen_api_lock(adapter))
2085 return;
2086
2087 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2088
2089 if (state != NX_DEV_INITALIZING)
2090 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2091
2092 netxen_api_unlock(adapter);
2093 }
2094
2095 static int
2096 netxen_can_start_firmware(struct netxen_adapter *adapter)
2097 {
2098 int count;
2099 int can_start = 0;
2100
2101 if (netxen_api_lock(adapter))
2102 return 0;
2103
2104 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2105
2106 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2107 count = 0;
2108
2109 if (count == 0) {
2110 can_start = 1;
2111 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2112 }
2113
2114 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2115
2116 netxen_api_unlock(adapter);
2117
2118 return can_start;
2119 }
2120
2121 static void
2122 netxen_schedule_work(struct netxen_adapter *adapter,
2123 work_func_t func, int delay)
2124 {
2125 INIT_DELAYED_WORK(&adapter->fw_work, func);
2126 schedule_delayed_work(&adapter->fw_work, delay);
2127 }
2128
2129 static void
2130 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2131 {
2132 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2133 msleep(10);
2134
2135 cancel_delayed_work_sync(&adapter->fw_work);
2136 }
2137
2138 static void
2139 netxen_attach_work(struct work_struct *work)
2140 {
2141 struct netxen_adapter *adapter = container_of(work,
2142 struct netxen_adapter, fw_work.work);
2143 struct net_device *netdev = adapter->netdev;
2144 int err = 0;
2145
2146 if (netif_running(netdev)) {
2147 err = netxen_nic_attach(adapter);
2148 if (err)
2149 goto done;
2150
2151 err = netxen_nic_up(adapter, netdev);
2152 if (err) {
2153 netxen_nic_detach(adapter);
2154 goto done;
2155 }
2156
2157 netxen_config_indev_addr(netdev, NETDEV_UP);
2158 }
2159
2160 netif_device_attach(netdev);
2161
2162 done:
2163 adapter->fw_fail_cnt = 0;
2164 clear_bit(__NX_RESETTING, &adapter->state);
2165 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2166 }
2167
2168 static void
2169 netxen_fwinit_work(struct work_struct *work)
2170 {
2171 struct netxen_adapter *adapter = container_of(work,
2172 struct netxen_adapter, fw_work.work);
2173 int dev_state;
2174
2175 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2176
2177 switch (dev_state) {
2178 case NX_DEV_COLD:
2179 case NX_DEV_READY:
2180 if (!netxen_start_firmware(adapter)) {
2181 netxen_schedule_work(adapter, netxen_attach_work, 0);
2182 return;
2183 }
2184 break;
2185
2186 case NX_DEV_INITALIZING:
2187 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2188 netxen_schedule_work(adapter,
2189 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2190 return;
2191 }
2192 break;
2193
2194 case NX_DEV_FAILED:
2195 default:
2196 break;
2197 }
2198
2199 nx_incr_dev_ref_cnt(adapter);
2200 clear_bit(__NX_RESETTING, &adapter->state);
2201 }
2202
2203 static void
2204 netxen_detach_work(struct work_struct *work)
2205 {
2206 struct netxen_adapter *adapter = container_of(work,
2207 struct netxen_adapter, fw_work.work);
2208 struct net_device *netdev = adapter->netdev;
2209 int ref_cnt, delay;
2210 u32 status;
2211
2212 netif_device_detach(netdev);
2213
2214 if (netif_running(netdev))
2215 netxen_nic_down(adapter, netdev);
2216
2217 netxen_nic_detach(adapter);
2218
2219 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2220
2221 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2222
2223 if (status & NX_RCODE_FATAL_ERROR)
2224 return;
2225
2226 if (adapter->temp == NX_TEMP_PANIC)
2227 return;
2228
2229 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2230
2231 adapter->fw_wait_cnt = 0;
2232 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2233 }
2234
2235 static int
2236 netxen_check_health(struct netxen_adapter *adapter)
2237 {
2238 u32 state, heartbit;
2239 struct net_device *netdev = adapter->netdev;
2240
2241 if (netxen_nic_check_temp(adapter))
2242 goto detach;
2243
2244 if (adapter->need_fw_reset) {
2245 nx_dev_request_reset(adapter);
2246 goto detach;
2247 }
2248
2249 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2250 if (state == NX_DEV_NEED_RESET)
2251 goto detach;
2252
2253 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2254 return 0;
2255
2256 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2257 if (heartbit != adapter->heartbit) {
2258 adapter->heartbit = heartbit;
2259 adapter->fw_fail_cnt = 0;
2260 return 0;
2261 }
2262
2263 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2264 return 0;
2265
2266 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2267
2268 dev_info(&netdev->dev, "firmware hang detected\n");
2269
2270 detach:
2271 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2272 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2273 netxen_schedule_work(adapter, netxen_detach_work, 0);
2274 return 1;
2275 }
2276
2277 static void
2278 netxen_fw_poll_work(struct work_struct *work)
2279 {
2280 struct netxen_adapter *adapter = container_of(work,
2281 struct netxen_adapter, fw_work.work);
2282
2283 if (test_bit(__NX_RESETTING, &adapter->state))
2284 goto reschedule;
2285
2286 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2287 if (!adapter->has_link_events) {
2288
2289 netxen_nic_handle_phy_intr(adapter);
2290
2291 if (adapter->link_changed)
2292 netxen_nic_set_link_parameters(adapter);
2293 }
2294 }
2295
2296 if (netxen_check_health(adapter))
2297 return;
2298
2299 reschedule:
2300 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2301 }
2302
2303 static ssize_t
2304 netxen_store_bridged_mode(struct device *dev,
2305 struct device_attribute *attr, const char *buf, size_t len)
2306 {
2307 struct net_device *net = to_net_dev(dev);
2308 struct netxen_adapter *adapter = netdev_priv(net);
2309 unsigned long new;
2310 int ret = -EINVAL;
2311
2312 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2313 goto err_out;
2314
2315 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2316 goto err_out;
2317
2318 if (strict_strtoul(buf, 2, &new))
2319 goto err_out;
2320
2321 if (!netxen_config_bridged_mode(adapter, !!new))
2322 ret = len;
2323
2324 err_out:
2325 return ret;
2326 }
2327
2328 static ssize_t
2329 netxen_show_bridged_mode(struct device *dev,
2330 struct device_attribute *attr, char *buf)
2331 {
2332 struct net_device *net = to_net_dev(dev);
2333 struct netxen_adapter *adapter;
2334 int bridged_mode = 0;
2335
2336 adapter = netdev_priv(net);
2337
2338 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2339 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2340
2341 return sprintf(buf, "%d\n", bridged_mode);
2342 }
2343
2344 static struct device_attribute dev_attr_bridged_mode = {
2345 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2346 .show = netxen_show_bridged_mode,
2347 .store = netxen_store_bridged_mode,
2348 };
2349
2350 static ssize_t
2351 netxen_store_diag_mode(struct device *dev,
2352 struct device_attribute *attr, const char *buf, size_t len)
2353 {
2354 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2355 unsigned long new;
2356
2357 if (strict_strtoul(buf, 2, &new))
2358 return -EINVAL;
2359
2360 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2361 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2362
2363 return len;
2364 }
2365
2366 static ssize_t
2367 netxen_show_diag_mode(struct device *dev,
2368 struct device_attribute *attr, char *buf)
2369 {
2370 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2371
2372 return sprintf(buf, "%d\n",
2373 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2374 }
2375
2376 static struct device_attribute dev_attr_diag_mode = {
2377 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2378 .show = netxen_show_diag_mode,
2379 .store = netxen_store_diag_mode,
2380 };
2381
2382 static int
2383 netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2384 loff_t offset, size_t size)
2385 {
2386 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2387 return -EIO;
2388
2389 if ((size != 4) || (offset & 0x3))
2390 return -EINVAL;
2391
2392 if (offset < NETXEN_PCI_CRBSPACE)
2393 return -EINVAL;
2394
2395 return 0;
2396 }
2397
2398 static ssize_t
2399 netxen_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
2400 char *buf, loff_t offset, size_t size)
2401 {
2402 struct device *dev = container_of(kobj, struct device, kobj);
2403 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2404 u32 data;
2405 int ret;
2406
2407 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2408 if (ret != 0)
2409 return ret;
2410
2411 data = NXRD32(adapter, offset);
2412 memcpy(buf, &data, size);
2413 return size;
2414 }
2415
2416 static ssize_t
2417 netxen_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
2418 char *buf, loff_t offset, size_t size)
2419 {
2420 struct device *dev = container_of(kobj, struct device, kobj);
2421 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2422 u32 data;
2423 int ret;
2424
2425 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2426 if (ret != 0)
2427 return ret;
2428
2429 memcpy(&data, buf, size);
2430 NXWR32(adapter, offset, data);
2431 return size;
2432 }
2433
2434 static int
2435 netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2436 loff_t offset, size_t size)
2437 {
2438 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2439 return -EIO;
2440
2441 if ((size != 8) || (offset & 0x7))
2442 return -EIO;
2443
2444 return 0;
2445 }
2446
2447 static ssize_t
2448 netxen_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
2449 char *buf, loff_t offset, size_t size)
2450 {
2451 struct device *dev = container_of(kobj, struct device, kobj);
2452 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2453 u64 data;
2454 int ret;
2455
2456 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2457 if (ret != 0)
2458 return ret;
2459
2460 if (adapter->pci_mem_read(adapter, offset, &data))
2461 return -EIO;
2462
2463 memcpy(buf, &data, size);
2464
2465 return size;
2466 }
2467
2468 ssize_t netxen_sysfs_write_mem(struct kobject *kobj,
2469 struct bin_attribute *attr, char *buf,
2470 loff_t offset, size_t size)
2471 {
2472 struct device *dev = container_of(kobj, struct device, kobj);
2473 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2474 u64 data;
2475 int ret;
2476
2477 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2478 if (ret != 0)
2479 return ret;
2480
2481 memcpy(&data, buf, size);
2482
2483 if (adapter->pci_mem_write(adapter, offset, data))
2484 return -EIO;
2485
2486 return size;
2487 }
2488
2489
2490 static struct bin_attribute bin_attr_crb = {
2491 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2492 .size = 0,
2493 .read = netxen_sysfs_read_crb,
2494 .write = netxen_sysfs_write_crb,
2495 };
2496
2497 static struct bin_attribute bin_attr_mem = {
2498 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2499 .size = 0,
2500 .read = netxen_sysfs_read_mem,
2501 .write = netxen_sysfs_write_mem,
2502 };
2503
2504 #ifdef CONFIG_MODULES
2505 static ssize_t
2506 netxen_store_auto_fw_reset(struct module_attribute *mattr,
2507 struct module *mod, const char *buf, size_t count)
2508
2509 {
2510 unsigned long new;
2511
2512 if (strict_strtoul(buf, 16, &new))
2513 return -EINVAL;
2514
2515 if ((new == AUTO_FW_RESET_ENABLED) || (new == AUTO_FW_RESET_DISABLED)) {
2516 auto_fw_reset = new;
2517 return count;
2518 }
2519
2520 return -EINVAL;
2521 }
2522
2523 static ssize_t
2524 netxen_show_auto_fw_reset(struct module_attribute *mattr,
2525 struct module *mod, char *buf)
2526
2527 {
2528 if (auto_fw_reset == AUTO_FW_RESET_ENABLED)
2529 return sprintf(buf, "enabled\n");
2530 else
2531 return sprintf(buf, "disabled\n");
2532 }
2533
2534 static struct module_attribute mod_attr_fw_reset = {
2535 .attr = {.name = "auto_fw_reset", .mode = (S_IRUGO | S_IWUSR)},
2536 .show = netxen_show_auto_fw_reset,
2537 .store = netxen_store_auto_fw_reset,
2538 };
2539 #endif
2540
2541 static void
2542 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2543 {
2544 struct net_device *netdev = adapter->netdev;
2545 struct device *dev = &netdev->dev;
2546
2547 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2548 /* bridged_mode control */
2549 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2550 dev_warn(&netdev->dev,
2551 "failed to create bridged_mode sysfs entry\n");
2552 }
2553 }
2554 }
2555
2556 static void
2557 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2558 {
2559 struct net_device *netdev = adapter->netdev;
2560 struct device *dev = &netdev->dev;
2561
2562 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2563 device_remove_file(dev, &dev_attr_bridged_mode);
2564 }
2565
2566 static void
2567 netxen_create_diag_entries(struct netxen_adapter *adapter)
2568 {
2569 struct pci_dev *pdev = adapter->pdev;
2570 struct device *dev;
2571
2572 dev = &pdev->dev;
2573 if (device_create_file(dev, &dev_attr_diag_mode))
2574 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2575 if (device_create_bin_file(dev, &bin_attr_crb))
2576 dev_info(dev, "failed to create crb sysfs entry\n");
2577 if (device_create_bin_file(dev, &bin_attr_mem))
2578 dev_info(dev, "failed to create mem sysfs entry\n");
2579 }
2580
2581
2582 static void
2583 netxen_remove_diag_entries(struct netxen_adapter *adapter)
2584 {
2585 struct pci_dev *pdev = adapter->pdev;
2586 struct device *dev = &pdev->dev;
2587
2588 device_remove_file(dev, &dev_attr_diag_mode);
2589 device_remove_bin_file(dev, &bin_attr_crb);
2590 device_remove_bin_file(dev, &bin_attr_mem);
2591 }
2592
2593 #ifdef CONFIG_INET
2594
2595 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2596
2597 static int
2598 netxen_destip_supported(struct netxen_adapter *adapter)
2599 {
2600 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2601 return 0;
2602
2603 if (adapter->ahw.cut_through)
2604 return 0;
2605
2606 return 1;
2607 }
2608
2609 static void
2610 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2611 {
2612 struct in_device *indev;
2613 struct netxen_adapter *adapter = netdev_priv(dev);
2614
2615 if (!netxen_destip_supported(adapter))
2616 return;
2617
2618 indev = in_dev_get(dev);
2619 if (!indev)
2620 return;
2621
2622 for_ifa(indev) {
2623 switch (event) {
2624 case NETDEV_UP:
2625 netxen_config_ipaddr(adapter,
2626 ifa->ifa_address, NX_IP_UP);
2627 break;
2628 case NETDEV_DOWN:
2629 netxen_config_ipaddr(adapter,
2630 ifa->ifa_address, NX_IP_DOWN);
2631 break;
2632 default:
2633 break;
2634 }
2635 } endfor_ifa(indev);
2636
2637 in_dev_put(indev);
2638 return;
2639 }
2640
2641 static int netxen_netdev_event(struct notifier_block *this,
2642 unsigned long event, void *ptr)
2643 {
2644 struct netxen_adapter *adapter;
2645 struct net_device *dev = (struct net_device *)ptr;
2646
2647 recheck:
2648 if (dev == NULL)
2649 goto done;
2650
2651 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2652 dev = vlan_dev_real_dev(dev);
2653 goto recheck;
2654 }
2655
2656 if (!is_netxen_netdev(dev))
2657 goto done;
2658
2659 adapter = netdev_priv(dev);
2660
2661 if (!adapter)
2662 goto done;
2663
2664 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2665 goto done;
2666
2667 netxen_config_indev_addr(dev, event);
2668 done:
2669 return NOTIFY_DONE;
2670 }
2671
2672 static int
2673 netxen_inetaddr_event(struct notifier_block *this,
2674 unsigned long event, void *ptr)
2675 {
2676 struct netxen_adapter *adapter;
2677 struct net_device *dev;
2678
2679 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2680
2681 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2682
2683 recheck:
2684 if (dev == NULL || !netif_running(dev))
2685 goto done;
2686
2687 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2688 dev = vlan_dev_real_dev(dev);
2689 goto recheck;
2690 }
2691
2692 if (!is_netxen_netdev(dev))
2693 goto done;
2694
2695 adapter = netdev_priv(dev);
2696
2697 if (!adapter || !netxen_destip_supported(adapter))
2698 goto done;
2699
2700 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2701 goto done;
2702
2703 switch (event) {
2704 case NETDEV_UP:
2705 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2706 break;
2707 case NETDEV_DOWN:
2708 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2709 break;
2710 default:
2711 break;
2712 }
2713
2714 done:
2715 return NOTIFY_DONE;
2716 }
2717
2718 static struct notifier_block netxen_netdev_cb = {
2719 .notifier_call = netxen_netdev_event,
2720 };
2721
2722 static struct notifier_block netxen_inetaddr_cb = {
2723 .notifier_call = netxen_inetaddr_event,
2724 };
2725 #else
2726 static void
2727 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2728 { }
2729 #endif
2730
2731 static struct pci_driver netxen_driver = {
2732 .name = netxen_nic_driver_name,
2733 .id_table = netxen_pci_tbl,
2734 .probe = netxen_nic_probe,
2735 .remove = __devexit_p(netxen_nic_remove),
2736 #ifdef CONFIG_PM
2737 .suspend = netxen_nic_suspend,
2738 .resume = netxen_nic_resume,
2739 #endif
2740 .shutdown = netxen_nic_shutdown
2741 };
2742
2743 static int __init netxen_init_module(void)
2744 {
2745 #ifdef CONFIG_MODULES
2746 struct module *mod = THIS_MODULE;
2747 #endif
2748
2749 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2750
2751 #ifdef CONFIG_INET
2752 register_netdevice_notifier(&netxen_netdev_cb);
2753 register_inetaddr_notifier(&netxen_inetaddr_cb);
2754 #endif
2755
2756 #ifdef CONFIG_MODULES
2757 if (sysfs_create_file(&mod->mkobj.kobj, &mod_attr_fw_reset.attr))
2758 printk(KERN_ERR "%s: Failed to create auto_fw_reset "
2759 "sysfs entry.", netxen_nic_driver_name);
2760 #endif
2761
2762 return pci_register_driver(&netxen_driver);
2763 }
2764
2765 module_init(netxen_init_module);
2766
2767 static void __exit netxen_exit_module(void)
2768 {
2769 #ifdef CONFIG_MODULES
2770 struct module *mod = THIS_MODULE;
2771
2772 sysfs_remove_file(&mod->mkobj.kobj, &mod_attr_fw_reset.attr);
2773 #endif
2774
2775 pci_unregister_driver(&netxen_driver);
2776
2777 #ifdef CONFIG_INET
2778 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2779 unregister_netdevice_notifier(&netxen_netdev_cb);
2780 #endif
2781 }
2782
2783 module_exit(netxen_exit_module);
Linux kernel - Deliverables
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