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netxen: fix smatch warning
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / netxen / netxen_nic_main.c
blob9f9d6081959b6f64ebfebba1384ec353f175ed64
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 MODULE_FIRMWARE(NX_P2_MN_ROMIMAGE_NAME);
43 MODULE_FIRMWARE(NX_P3_CT_ROMIMAGE_NAME);
44 MODULE_FIRMWARE(NX_P3_MN_ROMIMAGE_NAME);
45 MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
46
47 char netxen_nic_driver_name[] = "netxen_nic";
48 static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
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 static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
61 module_param(auto_fw_reset, int, 0644);
62 MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
63
64 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
65 const struct pci_device_id *ent);
66 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
67 static int netxen_nic_open(struct net_device *netdev);
68 static int netxen_nic_close(struct net_device *netdev);
69 static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
70 struct net_device *);
71 static void netxen_tx_timeout(struct net_device *netdev);
72 static void netxen_tx_timeout_task(struct work_struct *work);
73 static void netxen_fw_poll_work(struct work_struct *work);
74 static void netxen_schedule_work(struct netxen_adapter *adapter,
75 work_func_t func, int delay);
76 static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
77 static int netxen_nic_poll(struct napi_struct *napi, int budget);
78 #ifdef CONFIG_NET_POLL_CONTROLLER
79 static void netxen_nic_poll_controller(struct net_device *netdev);
80 #endif
81
82 static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
83 static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
84 static void netxen_create_diag_entries(struct netxen_adapter *adapter);
85 static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
86
87 static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
88 static int netxen_can_start_firmware(struct netxen_adapter *adapter);
89
90 static irqreturn_t netxen_intr(int irq, void *data);
91 static irqreturn_t netxen_msi_intr(int irq, void *data);
92 static irqreturn_t netxen_msix_intr(int irq, void *data);
93
94 static void netxen_config_indev_addr(struct net_device *dev, unsigned long);
95
96 /* PCI Device ID Table */
97 #define ENTRY(device) \
98 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
99 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
100
101 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
102 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
103 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
104 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
105 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
106 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
107 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
108 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
109 ENTRY(PCI_DEVICE_ID_NX3031),
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 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 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
451
452 /* set station address */
453
454 if (!is_valid_ether_addr(netdev->perm_addr))
455 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
456
457 return 0;
458 }
459
460 int netxen_nic_set_mac(struct net_device *netdev, void *p)
461 {
462 struct netxen_adapter *adapter = netdev_priv(netdev);
463 struct sockaddr *addr = p;
464
465 if (!is_valid_ether_addr(addr->sa_data))
466 return -EINVAL;
467
468 if (netif_running(netdev)) {
469 netif_device_detach(netdev);
470 netxen_napi_disable(adapter);
471 }
472
473 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
474 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
475 adapter->macaddr_set(adapter, addr->sa_data);
476
477 if (netif_running(netdev)) {
478 netif_device_attach(netdev);
479 netxen_napi_enable(adapter);
480 }
481 return 0;
482 }
483
484 static void netxen_set_multicast_list(struct net_device *dev)
485 {
486 struct netxen_adapter *adapter = netdev_priv(dev);
487
488 adapter->set_multi(dev);
489 }
490
491 static const struct net_device_ops netxen_netdev_ops = {
492 .ndo_open = netxen_nic_open,
493 .ndo_stop = netxen_nic_close,
494 .ndo_start_xmit = netxen_nic_xmit_frame,
495 .ndo_get_stats = netxen_nic_get_stats,
496 .ndo_validate_addr = eth_validate_addr,
497 .ndo_set_multicast_list = netxen_set_multicast_list,
498 .ndo_set_mac_address = netxen_nic_set_mac,
499 .ndo_change_mtu = netxen_nic_change_mtu,
500 .ndo_tx_timeout = netxen_tx_timeout,
501 #ifdef CONFIG_NET_POLL_CONTROLLER
502 .ndo_poll_controller = netxen_nic_poll_controller,
503 #endif
504 };
505
506 static void
507 netxen_setup_intr(struct netxen_adapter *adapter)
508 {
509 struct netxen_legacy_intr_set *legacy_intrp;
510 struct pci_dev *pdev = adapter->pdev;
511 int err, num_msix;
512
513 if (adapter->rss_supported) {
514 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
515 MSIX_ENTRIES_PER_ADAPTER : 2;
516 } else
517 num_msix = 1;
518
519 adapter->max_sds_rings = 1;
520
521 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
522
523 if (adapter->ahw.revision_id >= NX_P3_B0)
524 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
525 else
526 legacy_intrp = &legacy_intr[0];
527
528 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
529 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
530 legacy_intrp->tgt_status_reg);
531 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
532 legacy_intrp->tgt_mask_reg);
533 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
534 legacy_intrp->pci_int_reg);
535 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
536
537 if (adapter->ahw.revision_id >= NX_P3_B1)
538 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
539 ISR_INT_STATE_REG);
540 else
541 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
542 CRB_INT_VECTOR);
543
544 netxen_set_msix_bit(pdev, 0);
545
546 if (adapter->msix_supported) {
547
548 netxen_init_msix_entries(adapter, num_msix);
549 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
550 if (err == 0) {
551 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
552 netxen_set_msix_bit(pdev, 1);
553
554 if (adapter->rss_supported)
555 adapter->max_sds_rings = num_msix;
556
557 dev_info(&pdev->dev, "using msi-x interrupts\n");
558 return;
559 }
560
561 if (err > 0)
562 pci_disable_msix(pdev);
563
564 /* fall through for msi */
565 }
566
567 if (use_msi && !pci_enable_msi(pdev)) {
568 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
569 adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
570 msi_tgt_status[adapter->ahw.pci_func]);
571 dev_info(&pdev->dev, "using msi interrupts\n");
572 adapter->msix_entries[0].vector = pdev->irq;
573 return;
574 }
575
576 dev_info(&pdev->dev, "using legacy interrupts\n");
577 adapter->msix_entries[0].vector = pdev->irq;
578 }
579
580 static void
581 netxen_teardown_intr(struct netxen_adapter *adapter)
582 {
583 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
584 pci_disable_msix(adapter->pdev);
585 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
586 pci_disable_msi(adapter->pdev);
587 }
588
589 static void
590 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
591 {
592 if (adapter->ahw.db_base != NULL)
593 iounmap(adapter->ahw.db_base);
594 if (adapter->ahw.pci_base0 != NULL)
595 iounmap(adapter->ahw.pci_base0);
596 if (adapter->ahw.pci_base1 != NULL)
597 iounmap(adapter->ahw.pci_base1);
598 if (adapter->ahw.pci_base2 != NULL)
599 iounmap(adapter->ahw.pci_base2);
600 }
601
602 static int
603 netxen_setup_pci_map(struct netxen_adapter *adapter)
604 {
605 void __iomem *mem_ptr0 = NULL;
606 void __iomem *mem_ptr1 = NULL;
607 void __iomem *mem_ptr2 = NULL;
608 void __iomem *db_ptr = NULL;
609
610 resource_size_t mem_base, db_base;
611 unsigned long mem_len, db_len = 0, pci_len0 = 0;
612
613 struct pci_dev *pdev = adapter->pdev;
614 int pci_func = adapter->ahw.pci_func;
615
616 int err = 0;
617
618 /*
619 * Set the CRB window to invalid. If any register in window 0 is
620 * accessed it should set the window to 0 and then reset it to 1.
621 */
622 adapter->ahw.crb_win = -1;
623 adapter->ahw.ocm_win = -1;
624
625 /* remap phys address */
626 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
627 mem_len = pci_resource_len(pdev, 0);
628
629 /* 128 Meg of memory */
630 if (mem_len == NETXEN_PCI_128MB_SIZE) {
631 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
632 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
633 SECOND_PAGE_GROUP_SIZE);
634 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
635 THIRD_PAGE_GROUP_SIZE);
636 pci_len0 = FIRST_PAGE_GROUP_SIZE;
637 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
638 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
639 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
640 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
641 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
642
643 mem_ptr0 = pci_ioremap_bar(pdev, 0);
644 if (mem_ptr0 == NULL) {
645 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
646 return -EIO;
647 }
648 pci_len0 = mem_len;
649 } else {
650 return -EIO;
651 }
652
653 netxen_setup_hwops(adapter);
654
655 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
656
657 adapter->ahw.pci_base0 = mem_ptr0;
658 adapter->ahw.pci_len0 = pci_len0;
659 adapter->ahw.pci_base1 = mem_ptr1;
660 adapter->ahw.pci_base2 = mem_ptr2;
661
662 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
663 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
664 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
665
666 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
667 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
668 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
669 }
670
671 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
672 goto skip_doorbell;
673
674 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
675 db_len = pci_resource_len(pdev, 4);
676
677 if (db_len == 0) {
678 printk(KERN_ERR "%s: doorbell is disabled\n",
679 netxen_nic_driver_name);
680 err = -EIO;
681 goto err_out;
682 }
683
684 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
685 if (!db_ptr) {
686 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
687 netxen_nic_driver_name);
688 err = -EIO;
689 goto err_out;
690 }
691
692 skip_doorbell:
693 adapter->ahw.db_base = db_ptr;
694 adapter->ahw.db_len = db_len;
695 return 0;
696
697 err_out:
698 netxen_cleanup_pci_map(adapter);
699 return err;
700 }
701
702 static void
703 netxen_check_options(struct netxen_adapter *adapter)
704 {
705 u32 fw_major, fw_minor, fw_build;
706 char brd_name[NETXEN_MAX_SHORT_NAME];
707 char serial_num[32];
708 int i, offset, val;
709 int *ptr32;
710 struct pci_dev *pdev = adapter->pdev;
711
712 adapter->driver_mismatch = 0;
713
714 ptr32 = (int *)&serial_num;
715 offset = NX_FW_SERIAL_NUM_OFFSET;
716 for (i = 0; i < 8; i++) {
717 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
718 dev_err(&pdev->dev, "error reading board info\n");
719 adapter->driver_mismatch = 1;
720 return;
721 }
722 ptr32[i] = cpu_to_le32(val);
723 offset += sizeof(u32);
724 }
725
726 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
727 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
728 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
729
730 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
731
732 if (adapter->portnum == 0) {
733 get_brd_name_by_type(adapter->ahw.board_type, brd_name);
734
735 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
736 module_name(THIS_MODULE),
737 brd_name, serial_num, adapter->ahw.revision_id);
738 }
739
740 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
741 adapter->driver_mismatch = 1;
742 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
743 fw_major, fw_minor, fw_build);
744 return;
745 }
746
747 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
748 i = NXRD32(adapter, NETXEN_SRE_MISC);
749 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
750 }
751
752 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
753 fw_major, fw_minor, fw_build,
754 adapter->ahw.cut_through ? "cut-through" : "legacy");
755
756 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
757 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
758
759 adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
760
761 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
762 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
763 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
764 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
765 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
766 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
767 }
768
769 adapter->msix_supported = 0;
770 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
771 adapter->msix_supported = !!use_msi_x;
772 adapter->rss_supported = !!use_msi_x;
773 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
774 switch (adapter->ahw.board_type) {
775 case NETXEN_BRDTYPE_P2_SB31_10G:
776 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
777 adapter->msix_supported = !!use_msi_x;
778 adapter->rss_supported = !!use_msi_x;
779 break;
780 default:
781 break;
782 }
783 }
784
785 adapter->num_txd = MAX_CMD_DESCRIPTORS;
786
787 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
788 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
789 adapter->max_rds_rings = 3;
790 } else {
791 adapter->num_lro_rxd = 0;
792 adapter->max_rds_rings = 2;
793 }
794 }
795
796 static int
797 netxen_start_firmware(struct netxen_adapter *adapter)
798 {
799 int val, err, first_boot;
800 struct pci_dev *pdev = adapter->pdev;
801
802 /* required for NX2031 dummy dma */
803 err = nx_set_dma_mask(adapter);
804 if (err)
805 return err;
806
807 if (!netxen_can_start_firmware(adapter))
808 goto wait_init;
809
810 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
811
812 err = netxen_check_hw_init(adapter, first_boot);
813 if (err) {
814 dev_err(&pdev->dev, "error in init HW init sequence\n");
815 return err;
816 }
817
818 netxen_request_firmware(adapter);
819
820 err = netxen_need_fw_reset(adapter);
821 if (err < 0)
822 goto err_out;
823 if (err == 0)
824 goto wait_init;
825
826 if (first_boot != 0x55555555) {
827 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
828 netxen_pinit_from_rom(adapter);
829 msleep(1);
830 }
831
832 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
833 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
834 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
835
836 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
837 netxen_set_port_mode(adapter);
838
839 err = netxen_load_firmware(adapter);
840 if (err)
841 goto err_out;
842
843 netxen_release_firmware(adapter);
844
845 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
846
847 /* Initialize multicast addr pool owners */
848 val = 0x7654;
849 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
850 val |= 0x0f000000;
851 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
852
853 }
854
855 err = netxen_init_dummy_dma(adapter);
856 if (err)
857 goto err_out;
858
859 /*
860 * Tell the hardware our version number.
861 */
862 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
863 | ((_NETXEN_NIC_LINUX_MINOR << 8))
864 | (_NETXEN_NIC_LINUX_SUBVERSION);
865 NXWR32(adapter, CRB_DRIVER_VERSION, val);
866
867 wait_init:
868 /* Handshake with the card before we register the devices. */
869 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
870 if (err) {
871 netxen_free_dummy_dma(adapter);
872 goto err_out;
873 }
874
875 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
876
877 nx_update_dma_mask(adapter);
878
879 netxen_check_options(adapter);
880
881 adapter->need_fw_reset = 0;
882
883 /* fall through and release firmware */
884
885 err_out:
886 netxen_release_firmware(adapter);
887 return err;
888 }
889
890 static int
891 netxen_nic_request_irq(struct netxen_adapter *adapter)
892 {
893 irq_handler_t handler;
894 struct nx_host_sds_ring *sds_ring;
895 int err, ring;
896
897 unsigned long flags = IRQF_SAMPLE_RANDOM;
898 struct net_device *netdev = adapter->netdev;
899 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
900
901 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
902 handler = netxen_msix_intr;
903 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
904 handler = netxen_msi_intr;
905 else {
906 flags |= IRQF_SHARED;
907 handler = netxen_intr;
908 }
909 adapter->irq = netdev->irq;
910
911 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
912 sds_ring = &recv_ctx->sds_rings[ring];
913 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
914 err = request_irq(sds_ring->irq, handler,
915 flags, sds_ring->name, sds_ring);
916 if (err)
917 return err;
918 }
919
920 return 0;
921 }
922
923 static void
924 netxen_nic_free_irq(struct netxen_adapter *adapter)
925 {
926 int ring;
927 struct nx_host_sds_ring *sds_ring;
928
929 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
930
931 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
932 sds_ring = &recv_ctx->sds_rings[ring];
933 free_irq(sds_ring->irq, sds_ring);
934 }
935 }
936
937 static void
938 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
939 {
940 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
941 adapter->coal.normal.data.rx_time_us =
942 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
943 adapter->coal.normal.data.rx_packets =
944 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
945 adapter->coal.normal.data.tx_time_us =
946 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
947 adapter->coal.normal.data.tx_packets =
948 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
949 }
950
951 /* with rtnl_lock */
952 static int
953 __netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
954 {
955 int err;
956
957 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
958 return -EIO;
959
960 err = adapter->init_port(adapter, adapter->physical_port);
961 if (err) {
962 printk(KERN_ERR "%s: Failed to initialize port %d\n",
963 netxen_nic_driver_name, adapter->portnum);
964 return err;
965 }
966 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
967 adapter->macaddr_set(adapter, adapter->mac_addr);
968
969 adapter->set_multi(netdev);
970 adapter->set_mtu(adapter, netdev->mtu);
971
972 adapter->ahw.linkup = 0;
973
974 if (adapter->max_sds_rings > 1)
975 netxen_config_rss(adapter, 1);
976
977 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
978 netxen_config_intr_coalesce(adapter);
979
980 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
981 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
982
983 netxen_napi_enable(adapter);
984
985 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
986 netxen_linkevent_request(adapter, 1);
987 else
988 netxen_nic_set_link_parameters(adapter);
989
990 set_bit(__NX_DEV_UP, &adapter->state);
991 return 0;
992 }
993
994 /* Usage: During resume and firmware recovery module.*/
995
996 static inline int
997 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
998 {
999 int err = 0;
1000
1001 rtnl_lock();
1002 if (netif_running(netdev))
1003 err = __netxen_nic_up(adapter, netdev);
1004 rtnl_unlock();
1005
1006 return err;
1007 }
1008
1009 /* with rtnl_lock */
1010 static void
1011 __netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1012 {
1013 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1014 return;
1015
1016 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1017 return;
1018
1019 smp_mb();
1020 spin_lock(&adapter->tx_clean_lock);
1021 netif_carrier_off(netdev);
1022 netif_tx_disable(netdev);
1023
1024 if (adapter->stop_port)
1025 adapter->stop_port(adapter);
1026
1027 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1028 netxen_p3_free_mac_list(adapter);
1029
1030 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1031
1032 netxen_napi_disable(adapter);
1033
1034 netxen_release_tx_buffers(adapter);
1035 spin_unlock(&adapter->tx_clean_lock);
1036 }
1037
1038 /* Usage: During suspend and firmware recovery module */
1039
1040 static inline void
1041 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1042 {
1043 rtnl_lock();
1044 if (netif_running(netdev))
1045 __netxen_nic_down(adapter, netdev);
1046 rtnl_unlock();
1047
1048 }
1049
1050 static int
1051 netxen_nic_attach(struct netxen_adapter *adapter)
1052 {
1053 struct net_device *netdev = adapter->netdev;
1054 struct pci_dev *pdev = adapter->pdev;
1055 int err, ring;
1056 struct nx_host_rds_ring *rds_ring;
1057 struct nx_host_tx_ring *tx_ring;
1058
1059 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1060 return 0;
1061
1062 err = netxen_init_firmware(adapter);
1063 if (err)
1064 return err;
1065
1066 err = netxen_napi_add(adapter, netdev);
1067 if (err)
1068 return err;
1069
1070 err = netxen_alloc_sw_resources(adapter);
1071 if (err) {
1072 printk(KERN_ERR "%s: Error in setting sw resources\n",
1073 netdev->name);
1074 return err;
1075 }
1076
1077 err = netxen_alloc_hw_resources(adapter);
1078 if (err) {
1079 printk(KERN_ERR "%s: Error in setting hw resources\n",
1080 netdev->name);
1081 goto err_out_free_sw;
1082 }
1083
1084 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1085 tx_ring = adapter->tx_ring;
1086 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1087 crb_cmd_producer[adapter->portnum]);
1088 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1089 crb_cmd_consumer[adapter->portnum]);
1090
1091 tx_ring->producer = 0;
1092 tx_ring->sw_consumer = 0;
1093
1094 netxen_nic_update_cmd_producer(adapter, tx_ring);
1095 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1096 }
1097
1098 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1099 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1100 netxen_post_rx_buffers(adapter, ring, rds_ring);
1101 }
1102
1103 err = netxen_nic_request_irq(adapter);
1104 if (err) {
1105 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1106 netdev->name);
1107 goto err_out_free_rxbuf;
1108 }
1109
1110 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1111 netxen_nic_init_coalesce_defaults(adapter);
1112
1113 netxen_create_sysfs_entries(adapter);
1114
1115 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1116 return 0;
1117
1118 err_out_free_rxbuf:
1119 netxen_release_rx_buffers(adapter);
1120 netxen_free_hw_resources(adapter);
1121 err_out_free_sw:
1122 netxen_free_sw_resources(adapter);
1123 return err;
1124 }
1125
1126 static void
1127 netxen_nic_detach(struct netxen_adapter *adapter)
1128 {
1129 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1130 return;
1131
1132 netxen_remove_sysfs_entries(adapter);
1133
1134 netxen_free_hw_resources(adapter);
1135 netxen_release_rx_buffers(adapter);
1136 netxen_nic_free_irq(adapter);
1137 netxen_napi_del(adapter);
1138 netxen_free_sw_resources(adapter);
1139
1140 adapter->is_up = 0;
1141 }
1142
1143 int
1144 netxen_nic_reset_context(struct netxen_adapter *adapter)
1145 {
1146 int err = 0;
1147 struct net_device *netdev = adapter->netdev;
1148
1149 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1150 return -EBUSY;
1151
1152 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1153
1154 netif_device_detach(netdev);
1155
1156 if (netif_running(netdev))
1157 __netxen_nic_down(adapter, netdev);
1158
1159 netxen_nic_detach(adapter);
1160
1161 if (netif_running(netdev)) {
1162 err = netxen_nic_attach(adapter);
1163 if (!err)
1164 err = __netxen_nic_up(adapter, netdev);
1165
1166 if (err)
1167 goto done;
1168 }
1169
1170 netif_device_attach(netdev);
1171 }
1172
1173 done:
1174 clear_bit(__NX_RESETTING, &adapter->state);
1175 return err;
1176 }
1177
1178 static int
1179 netxen_setup_netdev(struct netxen_adapter *adapter,
1180 struct net_device *netdev)
1181 {
1182 int err = 0;
1183 struct pci_dev *pdev = adapter->pdev;
1184
1185 adapter->rx_csum = 1;
1186 adapter->mc_enabled = 0;
1187 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1188 adapter->max_mc_count = 38;
1189 else
1190 adapter->max_mc_count = 16;
1191
1192 netdev->netdev_ops = &netxen_netdev_ops;
1193 netdev->watchdog_timeo = 2*HZ;
1194
1195 netxen_nic_change_mtu(netdev, netdev->mtu);
1196
1197 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1198
1199 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1200 netdev->features |= (NETIF_F_GRO);
1201 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1202
1203 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1204 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1205 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1206 }
1207
1208 if (adapter->pci_using_dac) {
1209 netdev->features |= NETIF_F_HIGHDMA;
1210 netdev->vlan_features |= NETIF_F_HIGHDMA;
1211 }
1212
1213 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1214 netdev->features |= (NETIF_F_HW_VLAN_TX);
1215
1216 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1217 netdev->features |= NETIF_F_LRO;
1218
1219 netdev->irq = adapter->msix_entries[0].vector;
1220
1221 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1222
1223 if (netxen_read_mac_addr(adapter))
1224 dev_warn(&pdev->dev, "failed to read mac addr\n");
1225
1226 netif_carrier_off(netdev);
1227 netif_stop_queue(netdev);
1228
1229 err = register_netdev(netdev);
1230 if (err) {
1231 dev_err(&pdev->dev, "failed to register net device\n");
1232 return err;
1233 }
1234
1235 return 0;
1236 }
1237
1238 static int __devinit
1239 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1240 {
1241 struct net_device *netdev = NULL;
1242 struct netxen_adapter *adapter = NULL;
1243 int i = 0, err;
1244 int pci_func_id = PCI_FUNC(pdev->devfn);
1245 uint8_t revision_id;
1246
1247 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1248 pr_warning("%s: chip revisions between 0x%x-0x%x"
1249 "will not be enabled.\n",
1250 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1251 return -ENODEV;
1252 }
1253
1254 if ((err = pci_enable_device(pdev)))
1255 return err;
1256
1257 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1258 err = -ENODEV;
1259 goto err_out_disable_pdev;
1260 }
1261
1262 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1263 goto err_out_disable_pdev;
1264
1265 pci_set_master(pdev);
1266
1267 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1268 if(!netdev) {
1269 dev_err(&pdev->dev, "failed to allocate net_device\n");
1270 err = -ENOMEM;
1271 goto err_out_free_res;
1272 }
1273
1274 SET_NETDEV_DEV(netdev, &pdev->dev);
1275
1276 adapter = netdev_priv(netdev);
1277 adapter->netdev = netdev;
1278 adapter->pdev = pdev;
1279 adapter->ahw.pci_func = pci_func_id;
1280
1281 revision_id = pdev->revision;
1282 adapter->ahw.revision_id = revision_id;
1283
1284 rwlock_init(&adapter->ahw.crb_lock);
1285 spin_lock_init(&adapter->ahw.mem_lock);
1286
1287 spin_lock_init(&adapter->tx_clean_lock);
1288 INIT_LIST_HEAD(&adapter->mac_list);
1289
1290 err = netxen_setup_pci_map(adapter);
1291 if (err)
1292 goto err_out_free_netdev;
1293
1294 /* This will be reset for mezz cards */
1295 adapter->portnum = pci_func_id;
1296
1297 err = netxen_nic_get_board_info(adapter);
1298 if (err) {
1299 dev_err(&pdev->dev, "Error getting board config info.\n");
1300 goto err_out_iounmap;
1301 }
1302
1303 /* Mezz cards have PCI function 0,2,3 enabled */
1304 switch (adapter->ahw.board_type) {
1305 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1306 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1307 if (pci_func_id >= 2)
1308 adapter->portnum = pci_func_id - 2;
1309 break;
1310 default:
1311 break;
1312 }
1313
1314 err = netxen_start_firmware(adapter);
1315 if (err)
1316 goto err_out_decr_ref;
1317
1318 /*
1319 * See if the firmware gave us a virtual-physical port mapping.
1320 */
1321 adapter->physical_port = adapter->portnum;
1322 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1323 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1324 if (i != 0x55555555)
1325 adapter->physical_port = i;
1326 }
1327
1328 netxen_nic_clear_stats(adapter);
1329
1330 netxen_setup_intr(adapter);
1331
1332 err = netxen_setup_netdev(adapter, netdev);
1333 if (err)
1334 goto err_out_disable_msi;
1335
1336 pci_set_drvdata(pdev, adapter);
1337
1338 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1339
1340 switch (adapter->ahw.port_type) {
1341 case NETXEN_NIC_GBE:
1342 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1343 adapter->netdev->name);
1344 break;
1345 case NETXEN_NIC_XGBE:
1346 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1347 adapter->netdev->name);
1348 break;
1349 }
1350
1351 netxen_create_diag_entries(adapter);
1352
1353 return 0;
1354
1355 err_out_disable_msi:
1356 netxen_teardown_intr(adapter);
1357
1358 netxen_free_dummy_dma(adapter);
1359
1360 err_out_decr_ref:
1361 nx_decr_dev_ref_cnt(adapter);
1362
1363 err_out_iounmap:
1364 netxen_cleanup_pci_map(adapter);
1365
1366 err_out_free_netdev:
1367 free_netdev(netdev);
1368
1369 err_out_free_res:
1370 pci_release_regions(pdev);
1371
1372 err_out_disable_pdev:
1373 pci_set_drvdata(pdev, NULL);
1374 pci_disable_device(pdev);
1375 return err;
1376 }
1377
1378 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1379 {
1380 struct netxen_adapter *adapter;
1381 struct net_device *netdev;
1382
1383 adapter = pci_get_drvdata(pdev);
1384 if (adapter == NULL)
1385 return;
1386
1387 netdev = adapter->netdev;
1388
1389 netxen_cancel_fw_work(adapter);
1390
1391 unregister_netdev(netdev);
1392
1393 cancel_work_sync(&adapter->tx_timeout_task);
1394
1395 netxen_nic_detach(adapter);
1396
1397 nx_decr_dev_ref_cnt(adapter);
1398
1399 if (adapter->portnum == 0)
1400 netxen_free_dummy_dma(adapter);
1401
1402 clear_bit(__NX_RESETTING, &adapter->state);
1403
1404 netxen_teardown_intr(adapter);
1405
1406 netxen_remove_diag_entries(adapter);
1407
1408 netxen_cleanup_pci_map(adapter);
1409
1410 netxen_release_firmware(adapter);
1411
1412 pci_release_regions(pdev);
1413 pci_disable_device(pdev);
1414 pci_set_drvdata(pdev, NULL);
1415
1416 free_netdev(netdev);
1417 }
1418 static int __netxen_nic_shutdown(struct pci_dev *pdev)
1419 {
1420 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1421 struct net_device *netdev = adapter->netdev;
1422 int retval;
1423
1424 netif_device_detach(netdev);
1425
1426 netxen_cancel_fw_work(adapter);
1427
1428 if (netif_running(netdev))
1429 netxen_nic_down(adapter, netdev);
1430
1431 cancel_work_sync(&adapter->tx_timeout_task);
1432
1433 netxen_nic_detach(adapter);
1434
1435 if (adapter->portnum == 0)
1436 netxen_free_dummy_dma(adapter);
1437
1438 nx_decr_dev_ref_cnt(adapter);
1439
1440 clear_bit(__NX_RESETTING, &adapter->state);
1441
1442 retval = pci_save_state(pdev);
1443 if (retval)
1444 return retval;
1445
1446 if (netxen_nic_wol_supported(adapter)) {
1447 pci_enable_wake(pdev, PCI_D3cold, 1);
1448 pci_enable_wake(pdev, PCI_D3hot, 1);
1449 }
1450
1451 pci_disable_device(pdev);
1452
1453 return 0;
1454 }
1455 static void netxen_nic_shutdown(struct pci_dev *pdev)
1456 {
1457 if (__netxen_nic_shutdown(pdev))
1458 return;
1459 }
1460 #ifdef CONFIG_PM
1461 static int
1462 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1463 {
1464 int retval;
1465
1466 retval = __netxen_nic_shutdown(pdev);
1467 if (retval)
1468 return retval;
1469
1470 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1471 return 0;
1472 }
1473
1474 static int
1475 netxen_nic_resume(struct pci_dev *pdev)
1476 {
1477 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1478 struct net_device *netdev = adapter->netdev;
1479 int err;
1480
1481 pci_set_power_state(pdev, PCI_D0);
1482 pci_restore_state(pdev);
1483
1484 err = pci_enable_device(pdev);
1485 if (err)
1486 return err;
1487
1488 adapter->ahw.crb_win = -1;
1489 adapter->ahw.ocm_win = -1;
1490
1491 err = netxen_start_firmware(adapter);
1492 if (err) {
1493 dev_err(&pdev->dev, "failed to start firmware\n");
1494 return err;
1495 }
1496
1497 if (netif_running(netdev)) {
1498 err = netxen_nic_attach(adapter);
1499 if (err)
1500 goto err_out;
1501
1502 err = netxen_nic_up(adapter, netdev);
1503 if (err)
1504 goto err_out_detach;
1505
1506 netif_device_attach(netdev);
1507
1508 netxen_config_indev_addr(netdev, NETDEV_UP);
1509 }
1510
1511 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1512 return 0;
1513
1514 err_out_detach:
1515 netxen_nic_detach(adapter);
1516 err_out:
1517 nx_decr_dev_ref_cnt(adapter);
1518 return err;
1519 }
1520 #endif
1521
1522 static int netxen_nic_open(struct net_device *netdev)
1523 {
1524 struct netxen_adapter *adapter = netdev_priv(netdev);
1525 int err = 0;
1526
1527 if (adapter->driver_mismatch)
1528 return -EIO;
1529
1530 err = netxen_nic_attach(adapter);
1531 if (err)
1532 return err;
1533
1534 err = __netxen_nic_up(adapter, netdev);
1535 if (err)
1536 goto err_out;
1537
1538 netif_start_queue(netdev);
1539
1540 return 0;
1541
1542 err_out:
1543 netxen_nic_detach(adapter);
1544 return err;
1545 }
1546
1547 /*
1548 * netxen_nic_close - Disables a network interface entry point
1549 */
1550 static int netxen_nic_close(struct net_device *netdev)
1551 {
1552 struct netxen_adapter *adapter = netdev_priv(netdev);
1553
1554 __netxen_nic_down(adapter, netdev);
1555 return 0;
1556 }
1557
1558 static void
1559 netxen_tso_check(struct net_device *netdev,
1560 struct nx_host_tx_ring *tx_ring,
1561 struct cmd_desc_type0 *first_desc,
1562 struct sk_buff *skb)
1563 {
1564 u8 opcode = TX_ETHER_PKT;
1565 __be16 protocol = skb->protocol;
1566 u16 flags = 0, vid = 0;
1567 u32 producer;
1568 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1569 struct cmd_desc_type0 *hwdesc;
1570 struct vlan_ethhdr *vh;
1571
1572 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1573
1574 vh = (struct vlan_ethhdr *)skb->data;
1575 protocol = vh->h_vlan_encapsulated_proto;
1576 flags = FLAGS_VLAN_TAGGED;
1577
1578 } else if (vlan_tx_tag_present(skb)) {
1579
1580 flags = FLAGS_VLAN_OOB;
1581 vid = vlan_tx_tag_get(skb);
1582 netxen_set_tx_vlan_tci(first_desc, vid);
1583 vlan_oob = 1;
1584 }
1585
1586 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1587 skb_shinfo(skb)->gso_size > 0) {
1588
1589 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1590
1591 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1592 first_desc->total_hdr_length = hdr_len;
1593 if (vlan_oob) {
1594 first_desc->total_hdr_length += VLAN_HLEN;
1595 first_desc->tcp_hdr_offset = VLAN_HLEN;
1596 first_desc->ip_hdr_offset = VLAN_HLEN;
1597 /* Only in case of TSO on vlan device */
1598 flags |= FLAGS_VLAN_TAGGED;
1599 }
1600
1601 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1602 TX_TCP_LSO6 : TX_TCP_LSO;
1603 tso = 1;
1604
1605 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1606 u8 l4proto;
1607
1608 if (protocol == cpu_to_be16(ETH_P_IP)) {
1609 l4proto = ip_hdr(skb)->protocol;
1610
1611 if (l4proto == IPPROTO_TCP)
1612 opcode = TX_TCP_PKT;
1613 else if(l4proto == IPPROTO_UDP)
1614 opcode = TX_UDP_PKT;
1615 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1616 l4proto = ipv6_hdr(skb)->nexthdr;
1617
1618 if (l4proto == IPPROTO_TCP)
1619 opcode = TX_TCPV6_PKT;
1620 else if(l4proto == IPPROTO_UDP)
1621 opcode = TX_UDPV6_PKT;
1622 }
1623 }
1624
1625 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1626 first_desc->ip_hdr_offset += skb_network_offset(skb);
1627 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1628
1629 if (!tso)
1630 return;
1631
1632 /* For LSO, we need to copy the MAC/IP/TCP headers into
1633 * the descriptor ring
1634 */
1635 producer = tx_ring->producer;
1636 copied = 0;
1637 offset = 2;
1638
1639 if (vlan_oob) {
1640 /* Create a TSO vlan header template for firmware */
1641
1642 hwdesc = &tx_ring->desc_head[producer];
1643 tx_ring->cmd_buf_arr[producer].skb = NULL;
1644
1645 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1646 hdr_len + VLAN_HLEN);
1647
1648 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1649 skb_copy_from_linear_data(skb, vh, 12);
1650 vh->h_vlan_proto = htons(ETH_P_8021Q);
1651 vh->h_vlan_TCI = htons(vid);
1652 skb_copy_from_linear_data_offset(skb, 12,
1653 (char *)vh + 16, copy_len - 16);
1654
1655 copied = copy_len - VLAN_HLEN;
1656 offset = 0;
1657
1658 producer = get_next_index(producer, tx_ring->num_desc);
1659 }
1660
1661 while (copied < hdr_len) {
1662
1663 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1664 (hdr_len - copied));
1665
1666 hwdesc = &tx_ring->desc_head[producer];
1667 tx_ring->cmd_buf_arr[producer].skb = NULL;
1668
1669 skb_copy_from_linear_data_offset(skb, copied,
1670 (char *)hwdesc + offset, copy_len);
1671
1672 copied += copy_len;
1673 offset = 0;
1674
1675 producer = get_next_index(producer, tx_ring->num_desc);
1676 }
1677
1678 tx_ring->producer = producer;
1679 barrier();
1680 }
1681
1682 static int
1683 netxen_map_tx_skb(struct pci_dev *pdev,
1684 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1685 {
1686 struct netxen_skb_frag *nf;
1687 struct skb_frag_struct *frag;
1688 int i, nr_frags;
1689 dma_addr_t map;
1690
1691 nr_frags = skb_shinfo(skb)->nr_frags;
1692 nf = &pbuf->frag_array[0];
1693
1694 map = pci_map_single(pdev, skb->data,
1695 skb_headlen(skb), PCI_DMA_TODEVICE);
1696 if (pci_dma_mapping_error(pdev, map))
1697 goto out_err;
1698
1699 nf->dma = map;
1700 nf->length = skb_headlen(skb);
1701
1702 for (i = 0; i < nr_frags; i++) {
1703 frag = &skb_shinfo(skb)->frags[i];
1704 nf = &pbuf->frag_array[i+1];
1705
1706 map = pci_map_page(pdev, frag->page, frag->page_offset,
1707 frag->size, PCI_DMA_TODEVICE);
1708 if (pci_dma_mapping_error(pdev, map))
1709 goto unwind;
1710
1711 nf->dma = map;
1712 nf->length = frag->size;
1713 }
1714
1715 return 0;
1716
1717 unwind:
1718 while (--i >= 0) {
1719 nf = &pbuf->frag_array[i+1];
1720 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1721 }
1722
1723 nf = &pbuf->frag_array[0];
1724 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1725
1726 out_err:
1727 return -ENOMEM;
1728 }
1729
1730 static inline void
1731 netxen_clear_cmddesc(u64 *desc)
1732 {
1733 desc[0] = 0ULL;
1734 desc[2] = 0ULL;
1735 }
1736
1737 static netdev_tx_t
1738 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1739 {
1740 struct netxen_adapter *adapter = netdev_priv(netdev);
1741 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1742 struct netxen_cmd_buffer *pbuf;
1743 struct netxen_skb_frag *buffrag;
1744 struct cmd_desc_type0 *hwdesc, *first_desc;
1745 struct pci_dev *pdev;
1746 int i, k;
1747
1748 u32 producer;
1749 int frag_count, no_of_desc;
1750 u32 num_txd = tx_ring->num_desc;
1751
1752 frag_count = skb_shinfo(skb)->nr_frags + 1;
1753
1754 /* 4 fragments per cmd des */
1755 no_of_desc = (frag_count + 3) >> 2;
1756
1757 if (unlikely(no_of_desc + 2 > netxen_tx_avail(tx_ring))) {
1758 netif_stop_queue(netdev);
1759 return NETDEV_TX_BUSY;
1760 }
1761
1762 producer = tx_ring->producer;
1763 pbuf = &tx_ring->cmd_buf_arr[producer];
1764
1765 pdev = adapter->pdev;
1766
1767 if (netxen_map_tx_skb(pdev, skb, pbuf))
1768 goto drop_packet;
1769
1770 pbuf->skb = skb;
1771 pbuf->frag_count = frag_count;
1772
1773 first_desc = hwdesc = &tx_ring->desc_head[producer];
1774 netxen_clear_cmddesc((u64 *)hwdesc);
1775
1776 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1777 netxen_set_tx_port(first_desc, adapter->portnum);
1778
1779 for (i = 0; i < frag_count; i++) {
1780
1781 k = i % 4;
1782
1783 if ((k == 0) && (i > 0)) {
1784 /* move to next desc.*/
1785 producer = get_next_index(producer, num_txd);
1786 hwdesc = &tx_ring->desc_head[producer];
1787 netxen_clear_cmddesc((u64 *)hwdesc);
1788 tx_ring->cmd_buf_arr[producer].skb = NULL;
1789 }
1790
1791 buffrag = &pbuf->frag_array[i];
1792
1793 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1794 switch (k) {
1795 case 0:
1796 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1797 break;
1798 case 1:
1799 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1800 break;
1801 case 2:
1802 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1803 break;
1804 case 3:
1805 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1806 break;
1807 }
1808 }
1809
1810 tx_ring->producer = get_next_index(producer, num_txd);
1811
1812 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1813
1814 netxen_nic_update_cmd_producer(adapter, tx_ring);
1815
1816 adapter->stats.txbytes += skb->len;
1817 adapter->stats.xmitcalled++;
1818
1819 return NETDEV_TX_OK;
1820
1821 drop_packet:
1822 adapter->stats.txdropped++;
1823 dev_kfree_skb_any(skb);
1824 return NETDEV_TX_OK;
1825 }
1826
1827 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1828 {
1829 struct net_device *netdev = adapter->netdev;
1830 uint32_t temp, temp_state, temp_val;
1831 int rv = 0;
1832
1833 temp = NXRD32(adapter, CRB_TEMP_STATE);
1834
1835 temp_state = nx_get_temp_state(temp);
1836 temp_val = nx_get_temp_val(temp);
1837
1838 if (temp_state == NX_TEMP_PANIC) {
1839 printk(KERN_ALERT
1840 "%s: Device temperature %d degrees C exceeds"
1841 " maximum allowed. Hardware has been shut down.\n",
1842 netdev->name, temp_val);
1843 rv = 1;
1844 } else if (temp_state == NX_TEMP_WARN) {
1845 if (adapter->temp == NX_TEMP_NORMAL) {
1846 printk(KERN_ALERT
1847 "%s: Device temperature %d degrees C "
1848 "exceeds operating range."
1849 " Immediate action needed.\n",
1850 netdev->name, temp_val);
1851 }
1852 } else {
1853 if (adapter->temp == NX_TEMP_WARN) {
1854 printk(KERN_INFO
1855 "%s: Device temperature is now %d degrees C"
1856 " in normal range.\n", netdev->name,
1857 temp_val);
1858 }
1859 }
1860 adapter->temp = temp_state;
1861 return rv;
1862 }
1863
1864 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1865 {
1866 struct net_device *netdev = adapter->netdev;
1867
1868 if (adapter->ahw.linkup && !linkup) {
1869 printk(KERN_INFO "%s: %s NIC Link is down\n",
1870 netxen_nic_driver_name, netdev->name);
1871 adapter->ahw.linkup = 0;
1872 if (netif_running(netdev)) {
1873 netif_carrier_off(netdev);
1874 netif_stop_queue(netdev);
1875 }
1876 adapter->link_changed = !adapter->has_link_events;
1877 } else if (!adapter->ahw.linkup && linkup) {
1878 printk(KERN_INFO "%s: %s NIC Link is up\n",
1879 netxen_nic_driver_name, netdev->name);
1880 adapter->ahw.linkup = 1;
1881 if (netif_running(netdev)) {
1882 netif_carrier_on(netdev);
1883 netif_wake_queue(netdev);
1884 }
1885 adapter->link_changed = !adapter->has_link_events;
1886 }
1887 }
1888
1889 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1890 {
1891 u32 val, port, linkup;
1892
1893 port = adapter->physical_port;
1894
1895 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1896 val = NXRD32(adapter, CRB_XG_STATE_P3);
1897 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1898 linkup = (val == XG_LINK_UP_P3);
1899 } else {
1900 val = NXRD32(adapter, CRB_XG_STATE);
1901 val = (val >> port*8) & 0xff;
1902 linkup = (val == XG_LINK_UP);
1903 }
1904
1905 netxen_advert_link_change(adapter, linkup);
1906 }
1907
1908 static void netxen_tx_timeout(struct net_device *netdev)
1909 {
1910 struct netxen_adapter *adapter = netdev_priv(netdev);
1911
1912 if (test_bit(__NX_RESETTING, &adapter->state))
1913 return;
1914
1915 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1916 schedule_work(&adapter->tx_timeout_task);
1917 }
1918
1919 static void netxen_tx_timeout_task(struct work_struct *work)
1920 {
1921 struct netxen_adapter *adapter =
1922 container_of(work, struct netxen_adapter, tx_timeout_task);
1923
1924 if (!netif_running(adapter->netdev))
1925 return;
1926
1927 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1928 return;
1929
1930 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
1931 goto request_reset;
1932
1933 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1934 /* try to scrub interrupt */
1935 netxen_napi_disable(adapter);
1936
1937 adapter->netdev->trans_start = jiffies;
1938
1939 netxen_napi_enable(adapter);
1940
1941 netif_wake_queue(adapter->netdev);
1942
1943 clear_bit(__NX_RESETTING, &adapter->state);
1944
1945 } else {
1946 clear_bit(__NX_RESETTING, &adapter->state);
1947 if (!netxen_nic_reset_context(adapter)) {
1948 adapter->netdev->trans_start = jiffies;
1949 return;
1950 }
1951
1952 /* context reset failed, fall through for fw reset */
1953 }
1954
1955 request_reset:
1956 adapter->need_fw_reset = 1;
1957 clear_bit(__NX_RESETTING, &adapter->state);
1958 }
1959
1960 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1961 {
1962 struct netxen_adapter *adapter = netdev_priv(netdev);
1963 struct net_device_stats *stats = &netdev->stats;
1964
1965 memset(stats, 0, sizeof(*stats));
1966
1967 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1968 stats->tx_packets = adapter->stats.xmitfinished;
1969 stats->rx_bytes = adapter->stats.rxbytes;
1970 stats->tx_bytes = adapter->stats.txbytes;
1971 stats->rx_dropped = adapter->stats.rxdropped;
1972 stats->tx_dropped = adapter->stats.txdropped;
1973
1974 return stats;
1975 }
1976
1977 static irqreturn_t netxen_intr(int irq, void *data)
1978 {
1979 struct nx_host_sds_ring *sds_ring = data;
1980 struct netxen_adapter *adapter = sds_ring->adapter;
1981 u32 status = 0;
1982
1983 status = readl(adapter->isr_int_vec);
1984
1985 if (!(status & adapter->int_vec_bit))
1986 return IRQ_NONE;
1987
1988 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1989 /* check interrupt state machine, to be sure */
1990 status = readl(adapter->crb_int_state_reg);
1991 if (!ISR_LEGACY_INT_TRIGGERED(status))
1992 return IRQ_NONE;
1993
1994 } else {
1995 unsigned long our_int = 0;
1996
1997 our_int = readl(adapter->crb_int_state_reg);
1998
1999 /* not our interrupt */
2000 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2001 return IRQ_NONE;
2002
2003 /* claim interrupt */
2004 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2005
2006 /* clear interrupt */
2007 netxen_nic_disable_int(sds_ring);
2008 }
2009
2010 writel(0xffffffff, adapter->tgt_status_reg);
2011 /* read twice to ensure write is flushed */
2012 readl(adapter->isr_int_vec);
2013 readl(adapter->isr_int_vec);
2014
2015 napi_schedule(&sds_ring->napi);
2016
2017 return IRQ_HANDLED;
2018 }
2019
2020 static irqreturn_t netxen_msi_intr(int irq, void *data)
2021 {
2022 struct nx_host_sds_ring *sds_ring = data;
2023 struct netxen_adapter *adapter = sds_ring->adapter;
2024
2025 /* clear interrupt */
2026 writel(0xffffffff, adapter->tgt_status_reg);
2027
2028 napi_schedule(&sds_ring->napi);
2029 return IRQ_HANDLED;
2030 }
2031
2032 static irqreturn_t netxen_msix_intr(int irq, void *data)
2033 {
2034 struct nx_host_sds_ring *sds_ring = data;
2035
2036 napi_schedule(&sds_ring->napi);
2037 return IRQ_HANDLED;
2038 }
2039
2040 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2041 {
2042 struct nx_host_sds_ring *sds_ring =
2043 container_of(napi, struct nx_host_sds_ring, napi);
2044
2045 struct netxen_adapter *adapter = sds_ring->adapter;
2046
2047 int tx_complete;
2048 int work_done;
2049
2050 tx_complete = netxen_process_cmd_ring(adapter);
2051
2052 work_done = netxen_process_rcv_ring(sds_ring, budget);
2053
2054 if ((work_done < budget) && tx_complete) {
2055 napi_complete(&sds_ring->napi);
2056 if (test_bit(__NX_DEV_UP, &adapter->state))
2057 netxen_nic_enable_int(sds_ring);
2058 }
2059
2060 return work_done;
2061 }
2062
2063 #ifdef CONFIG_NET_POLL_CONTROLLER
2064 static void netxen_nic_poll_controller(struct net_device *netdev)
2065 {
2066 struct netxen_adapter *adapter = netdev_priv(netdev);
2067 disable_irq(adapter->irq);
2068 netxen_intr(adapter->irq, adapter);
2069 enable_irq(adapter->irq);
2070 }
2071 #endif
2072
2073 static int
2074 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2075 {
2076 int count;
2077 if (netxen_api_lock(adapter))
2078 return -EIO;
2079
2080 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2081
2082 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2083
2084 netxen_api_unlock(adapter);
2085 return count;
2086 }
2087
2088 static int
2089 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2090 {
2091 int count;
2092 if (netxen_api_lock(adapter))
2093 return -EIO;
2094
2095 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2096 WARN_ON(count == 0);
2097
2098 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2099
2100 if (count == 0)
2101 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2102
2103 netxen_api_unlock(adapter);
2104 return count;
2105 }
2106
2107 static void
2108 nx_dev_request_reset(struct netxen_adapter *adapter)
2109 {
2110 u32 state;
2111
2112 if (netxen_api_lock(adapter))
2113 return;
2114
2115 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2116
2117 if (state != NX_DEV_INITALIZING)
2118 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2119
2120 netxen_api_unlock(adapter);
2121 }
2122
2123 static int
2124 netxen_can_start_firmware(struct netxen_adapter *adapter)
2125 {
2126 int count;
2127 int can_start = 0;
2128
2129 if (netxen_api_lock(adapter))
2130 return 0;
2131
2132 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2133
2134 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2135 count = 0;
2136
2137 if (count == 0) {
2138 can_start = 1;
2139 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2140 }
2141
2142 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2143
2144 netxen_api_unlock(adapter);
2145
2146 return can_start;
2147 }
2148
2149 static void
2150 netxen_schedule_work(struct netxen_adapter *adapter,
2151 work_func_t func, int delay)
2152 {
2153 INIT_DELAYED_WORK(&adapter->fw_work, func);
2154 schedule_delayed_work(&adapter->fw_work, delay);
2155 }
2156
2157 static void
2158 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2159 {
2160 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2161 msleep(10);
2162
2163 cancel_delayed_work_sync(&adapter->fw_work);
2164 }
2165
2166 static void
2167 netxen_attach_work(struct work_struct *work)
2168 {
2169 struct netxen_adapter *adapter = container_of(work,
2170 struct netxen_adapter, fw_work.work);
2171 struct net_device *netdev = adapter->netdev;
2172 int err = 0;
2173
2174 if (netif_running(netdev)) {
2175 err = netxen_nic_attach(adapter);
2176 if (err)
2177 goto done;
2178
2179 err = netxen_nic_up(adapter, netdev);
2180 if (err) {
2181 netxen_nic_detach(adapter);
2182 goto done;
2183 }
2184
2185 netxen_config_indev_addr(netdev, NETDEV_UP);
2186 }
2187
2188 netif_device_attach(netdev);
2189
2190 done:
2191 adapter->fw_fail_cnt = 0;
2192 clear_bit(__NX_RESETTING, &adapter->state);
2193 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2194 }
2195
2196 static void
2197 netxen_fwinit_work(struct work_struct *work)
2198 {
2199 struct netxen_adapter *adapter = container_of(work,
2200 struct netxen_adapter, fw_work.work);
2201 int dev_state;
2202
2203 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2204
2205 switch (dev_state) {
2206 case NX_DEV_COLD:
2207 case NX_DEV_READY:
2208 if (!netxen_start_firmware(adapter)) {
2209 netxen_schedule_work(adapter, netxen_attach_work, 0);
2210 return;
2211 }
2212 break;
2213
2214 case NX_DEV_INITALIZING:
2215 if (++adapter->fw_wait_cnt < FW_POLL_THRESH) {
2216 netxen_schedule_work(adapter,
2217 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2218 return;
2219 }
2220
2221 case NX_DEV_FAILED:
2222 default:
2223 nx_incr_dev_ref_cnt(adapter);
2224 break;
2225 }
2226
2227 clear_bit(__NX_RESETTING, &adapter->state);
2228 }
2229
2230 static void
2231 netxen_detach_work(struct work_struct *work)
2232 {
2233 struct netxen_adapter *adapter = container_of(work,
2234 struct netxen_adapter, fw_work.work);
2235 struct net_device *netdev = adapter->netdev;
2236 int ref_cnt, delay;
2237 u32 status;
2238
2239 netif_device_detach(netdev);
2240
2241 netxen_nic_down(adapter, netdev);
2242
2243 netxen_nic_detach(adapter);
2244
2245 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2246
2247 if (status & NX_RCODE_FATAL_ERROR)
2248 goto err_ret;
2249
2250 if (adapter->temp == NX_TEMP_PANIC)
2251 goto err_ret;
2252
2253 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2254
2255 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2256
2257 adapter->fw_wait_cnt = 0;
2258 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2259
2260 return;
2261
2262 err_ret:
2263 clear_bit(__NX_RESETTING, &adapter->state);
2264 }
2265
2266 static int
2267 netxen_check_health(struct netxen_adapter *adapter)
2268 {
2269 u32 state, heartbit;
2270 struct net_device *netdev = adapter->netdev;
2271
2272 if (netxen_nic_check_temp(adapter))
2273 goto detach;
2274
2275 if (adapter->need_fw_reset) {
2276 nx_dev_request_reset(adapter);
2277 goto detach;
2278 }
2279
2280 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2281 if (state == NX_DEV_NEED_RESET)
2282 goto detach;
2283
2284 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2285 return 0;
2286
2287 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2288 if (heartbit != adapter->heartbit) {
2289 adapter->heartbit = heartbit;
2290 adapter->fw_fail_cnt = 0;
2291 return 0;
2292 }
2293
2294 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2295 return 0;
2296
2297 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2298
2299 dev_info(&netdev->dev, "firmware hang detected\n");
2300
2301 detach:
2302 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2303 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2304 netxen_schedule_work(adapter, netxen_detach_work, 0);
2305 return 1;
2306 }
2307
2308 static void
2309 netxen_fw_poll_work(struct work_struct *work)
2310 {
2311 struct netxen_adapter *adapter = container_of(work,
2312 struct netxen_adapter, fw_work.work);
2313
2314 if (test_bit(__NX_RESETTING, &adapter->state))
2315 goto reschedule;
2316
2317 if (test_bit(__NX_DEV_UP, &adapter->state)) {
2318 if (!adapter->has_link_events) {
2319
2320 netxen_nic_handle_phy_intr(adapter);
2321
2322 if (adapter->link_changed)
2323 netxen_nic_set_link_parameters(adapter);
2324 }
2325 }
2326
2327 if (netxen_check_health(adapter))
2328 return;
2329
2330 reschedule:
2331 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2332 }
2333
2334 static ssize_t
2335 netxen_store_bridged_mode(struct device *dev,
2336 struct device_attribute *attr, const char *buf, size_t len)
2337 {
2338 struct net_device *net = to_net_dev(dev);
2339 struct netxen_adapter *adapter = netdev_priv(net);
2340 unsigned long new;
2341 int ret = -EINVAL;
2342
2343 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2344 goto err_out;
2345
2346 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2347 goto err_out;
2348
2349 if (strict_strtoul(buf, 2, &new))
2350 goto err_out;
2351
2352 if (!netxen_config_bridged_mode(adapter, !!new))
2353 ret = len;
2354
2355 err_out:
2356 return ret;
2357 }
2358
2359 static ssize_t
2360 netxen_show_bridged_mode(struct device *dev,
2361 struct device_attribute *attr, char *buf)
2362 {
2363 struct net_device *net = to_net_dev(dev);
2364 struct netxen_adapter *adapter;
2365 int bridged_mode = 0;
2366
2367 adapter = netdev_priv(net);
2368
2369 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2370 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2371
2372 return sprintf(buf, "%d\n", bridged_mode);
2373 }
2374
2375 static struct device_attribute dev_attr_bridged_mode = {
2376 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2377 .show = netxen_show_bridged_mode,
2378 .store = netxen_store_bridged_mode,
2379 };
2380
2381 static ssize_t
2382 netxen_store_diag_mode(struct device *dev,
2383 struct device_attribute *attr, const char *buf, size_t len)
2384 {
2385 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2386 unsigned long new;
2387
2388 if (strict_strtoul(buf, 2, &new))
2389 return -EINVAL;
2390
2391 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2392 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2393
2394 return len;
2395 }
2396
2397 static ssize_t
2398 netxen_show_diag_mode(struct device *dev,
2399 struct device_attribute *attr, char *buf)
2400 {
2401 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2402
2403 return sprintf(buf, "%d\n",
2404 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2405 }
2406
2407 static struct device_attribute dev_attr_diag_mode = {
2408 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2409 .show = netxen_show_diag_mode,
2410 .store = netxen_store_diag_mode,
2411 };
2412
2413 static int
2414 netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2415 loff_t offset, size_t size)
2416 {
2417 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2418 return -EIO;
2419
2420 if ((size != 4) || (offset & 0x3))
2421 return -EINVAL;
2422
2423 if (offset < NETXEN_PCI_CRBSPACE)
2424 return -EINVAL;
2425
2426 return 0;
2427 }
2428
2429 static ssize_t
2430 netxen_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
2431 char *buf, loff_t offset, size_t size)
2432 {
2433 struct device *dev = container_of(kobj, struct device, kobj);
2434 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2435 u32 data;
2436 int ret;
2437
2438 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2439 if (ret != 0)
2440 return ret;
2441
2442 data = NXRD32(adapter, offset);
2443 memcpy(buf, &data, size);
2444 return size;
2445 }
2446
2447 static ssize_t
2448 netxen_sysfs_write_crb(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 u32 data;
2454 int ret;
2455
2456 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2457 if (ret != 0)
2458 return ret;
2459
2460 memcpy(&data, buf, size);
2461 NXWR32(adapter, offset, data);
2462 return size;
2463 }
2464
2465 static int
2466 netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2467 loff_t offset, size_t size)
2468 {
2469 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2470 return -EIO;
2471
2472 if ((size != 8) || (offset & 0x7))
2473 return -EIO;
2474
2475 return 0;
2476 }
2477
2478 static ssize_t
2479 netxen_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
2480 char *buf, loff_t offset, size_t size)
2481 {
2482 struct device *dev = container_of(kobj, struct device, kobj);
2483 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2484 u64 data;
2485 int ret;
2486
2487 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2488 if (ret != 0)
2489 return ret;
2490
2491 if (adapter->pci_mem_read(adapter, offset, &data))
2492 return -EIO;
2493
2494 memcpy(buf, &data, size);
2495
2496 return size;
2497 }
2498
2499 ssize_t netxen_sysfs_write_mem(struct kobject *kobj,
2500 struct bin_attribute *attr, char *buf,
2501 loff_t offset, size_t size)
2502 {
2503 struct device *dev = container_of(kobj, struct device, kobj);
2504 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2505 u64 data;
2506 int ret;
2507
2508 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2509 if (ret != 0)
2510 return ret;
2511
2512 memcpy(&data, buf, size);
2513
2514 if (adapter->pci_mem_write(adapter, offset, data))
2515 return -EIO;
2516
2517 return size;
2518 }
2519
2520
2521 static struct bin_attribute bin_attr_crb = {
2522 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2523 .size = 0,
2524 .read = netxen_sysfs_read_crb,
2525 .write = netxen_sysfs_write_crb,
2526 };
2527
2528 static struct bin_attribute bin_attr_mem = {
2529 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2530 .size = 0,
2531 .read = netxen_sysfs_read_mem,
2532 .write = netxen_sysfs_write_mem,
2533 };
2534
2535
2536 static void
2537 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2538 {
2539 struct net_device *netdev = adapter->netdev;
2540 struct device *dev = &netdev->dev;
2541
2542 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2543 /* bridged_mode control */
2544 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2545 dev_warn(&netdev->dev,
2546 "failed to create bridged_mode sysfs entry\n");
2547 }
2548 }
2549 }
2550
2551 static void
2552 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2553 {
2554 struct net_device *netdev = adapter->netdev;
2555 struct device *dev = &netdev->dev;
2556
2557 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2558 device_remove_file(dev, &dev_attr_bridged_mode);
2559 }
2560
2561 static void
2562 netxen_create_diag_entries(struct netxen_adapter *adapter)
2563 {
2564 struct pci_dev *pdev = adapter->pdev;
2565 struct device *dev;
2566
2567 dev = &pdev->dev;
2568 if (device_create_file(dev, &dev_attr_diag_mode))
2569 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2570 if (device_create_bin_file(dev, &bin_attr_crb))
2571 dev_info(dev, "failed to create crb sysfs entry\n");
2572 if (device_create_bin_file(dev, &bin_attr_mem))
2573 dev_info(dev, "failed to create mem sysfs entry\n");
2574 }
2575
2576
2577 static void
2578 netxen_remove_diag_entries(struct netxen_adapter *adapter)
2579 {
2580 struct pci_dev *pdev = adapter->pdev;
2581 struct device *dev = &pdev->dev;
2582
2583 device_remove_file(dev, &dev_attr_diag_mode);
2584 device_remove_bin_file(dev, &bin_attr_crb);
2585 device_remove_bin_file(dev, &bin_attr_mem);
2586 }
2587
2588 #ifdef CONFIG_INET
2589
2590 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2591
2592 static int
2593 netxen_destip_supported(struct netxen_adapter *adapter)
2594 {
2595 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2596 return 0;
2597
2598 if (adapter->ahw.cut_through)
2599 return 0;
2600
2601 return 1;
2602 }
2603
2604 static void
2605 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2606 {
2607 struct in_device *indev;
2608 struct netxen_adapter *adapter = netdev_priv(dev);
2609
2610 if (!netxen_destip_supported(adapter))
2611 return;
2612
2613 indev = in_dev_get(dev);
2614 if (!indev)
2615 return;
2616
2617 for_ifa(indev) {
2618 switch (event) {
2619 case NETDEV_UP:
2620 netxen_config_ipaddr(adapter,
2621 ifa->ifa_address, NX_IP_UP);
2622 break;
2623 case NETDEV_DOWN:
2624 netxen_config_ipaddr(adapter,
2625 ifa->ifa_address, NX_IP_DOWN);
2626 break;
2627 default:
2628 break;
2629 }
2630 } endfor_ifa(indev);
2631
2632 in_dev_put(indev);
2633 return;
2634 }
2635
2636 static int netxen_netdev_event(struct notifier_block *this,
2637 unsigned long event, void *ptr)
2638 {
2639 struct netxen_adapter *adapter;
2640 struct net_device *dev = (struct net_device *)ptr;
2641
2642 recheck:
2643 if (dev == NULL)
2644 goto done;
2645
2646 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2647 dev = vlan_dev_real_dev(dev);
2648 goto recheck;
2649 }
2650
2651 if (!is_netxen_netdev(dev))
2652 goto done;
2653
2654 adapter = netdev_priv(dev);
2655
2656 if (!adapter)
2657 goto done;
2658
2659 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2660 goto done;
2661
2662 netxen_config_indev_addr(dev, event);
2663 done:
2664 return NOTIFY_DONE;
2665 }
2666
2667 static int
2668 netxen_inetaddr_event(struct notifier_block *this,
2669 unsigned long event, void *ptr)
2670 {
2671 struct netxen_adapter *adapter;
2672 struct net_device *dev;
2673
2674 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2675
2676 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2677
2678 recheck:
2679 if (dev == NULL || !netif_running(dev))
2680 goto done;
2681
2682 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2683 dev = vlan_dev_real_dev(dev);
2684 goto recheck;
2685 }
2686
2687 if (!is_netxen_netdev(dev))
2688 goto done;
2689
2690 adapter = netdev_priv(dev);
2691
2692 if (!adapter || !netxen_destip_supported(adapter))
2693 goto done;
2694
2695 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2696 goto done;
2697
2698 switch (event) {
2699 case NETDEV_UP:
2700 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2701 break;
2702 case NETDEV_DOWN:
2703 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2704 break;
2705 default:
2706 break;
2707 }
2708
2709 done:
2710 return NOTIFY_DONE;
2711 }
2712
2713 static struct notifier_block netxen_netdev_cb = {
2714 .notifier_call = netxen_netdev_event,
2715 };
2716
2717 static struct notifier_block netxen_inetaddr_cb = {
2718 .notifier_call = netxen_inetaddr_event,
2719 };
2720 #else
2721 static void
2722 netxen_config_indev_addr(struct net_device *dev, unsigned long event)
2723 { }
2724 #endif
2725
2726 static struct pci_driver netxen_driver = {
2727 .name = netxen_nic_driver_name,
2728 .id_table = netxen_pci_tbl,
2729 .probe = netxen_nic_probe,
2730 .remove = __devexit_p(netxen_nic_remove),
2731 #ifdef CONFIG_PM
2732 .suspend = netxen_nic_suspend,
2733 .resume = netxen_nic_resume,
2734 #endif
2735 .shutdown = netxen_nic_shutdown
2736 };
2737
2738 static int __init netxen_init_module(void)
2739 {
2740 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2741
2742 #ifdef CONFIG_INET
2743 register_netdevice_notifier(&netxen_netdev_cb);
2744 register_inetaddr_notifier(&netxen_inetaddr_cb);
2745 #endif
2746 return pci_register_driver(&netxen_driver);
2747 }
2748
2749 module_init(netxen_init_module);
2750
2751 static void __exit netxen_exit_module(void)
2752 {
2753 pci_unregister_driver(&netxen_driver);
2754
2755 #ifdef CONFIG_INET
2756 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2757 unregister_netdevice_notifier(&netxen_netdev_cb);
2758 #endif
2759 }
2760
2761 module_exit(netxen_exit_module);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree