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[deliverable/linux.git] / drivers / net / netxen / netxen_nic_main.c
1 /*
2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 * MA 02111-1307, USA.
19 *
20 * The full GNU General Public License is included in this distribution
21 * in the file called LICENSE.
22 *
23 * Contact Information:
24 * info@netxen.com
25 * NetXen Inc,
26 * 18922 Forge Drive
27 * Cupertino, CA 95014-0701
28 *
29 */
30
31 #include <linux/vmalloc.h>
32 #include <linux/interrupt.h>
33 #include "netxen_nic_hw.h"
34
35 #include "netxen_nic.h"
36
37 #include <linux/dma-mapping.h>
38 #include <linux/if_vlan.h>
39 #include <net/ip.h>
40 #include <linux/ipv6.h>
41 #include <linux/inetdevice.h>
42
43 MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
44 MODULE_LICENSE("GPL");
45 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
46
47 char netxen_nic_driver_name[] = "netxen_nic";
48 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
49 NETXEN_NIC_LINUX_VERSIONID;
50
51 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
52
53 /* Default to restricted 1G auto-neg mode */
54 static int wol_port_mode = 5;
55
56 static int use_msi = 1;
57
58 static int use_msi_x = 1;
59
60 /* Local functions to NetXen NIC driver */
61 static int __devinit netxen_nic_probe(struct pci_dev *pdev,
62 const struct pci_device_id *ent);
63 static void __devexit netxen_nic_remove(struct pci_dev *pdev);
64 static int netxen_nic_open(struct net_device *netdev);
65 static int netxen_nic_close(struct net_device *netdev);
66 static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
67 static void netxen_tx_timeout(struct net_device *netdev);
68 static void netxen_reset_task(struct work_struct *work);
69 static void netxen_watchdog(unsigned long);
70 static int netxen_nic_poll(struct napi_struct *napi, int budget);
71 #ifdef CONFIG_NET_POLL_CONTROLLER
72 static void netxen_nic_poll_controller(struct net_device *netdev);
73 #endif
74
75 static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
76 static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
77
78 static irqreturn_t netxen_intr(int irq, void *data);
79 static irqreturn_t netxen_msi_intr(int irq, void *data);
80 static irqreturn_t netxen_msix_intr(int irq, void *data);
81
82 /* PCI Device ID Table */
83 #define ENTRY(device) \
84 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
85 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
86
87 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
88 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
89 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
90 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
91 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
92 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
93 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
94 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
95 ENTRY(PCI_DEVICE_ID_NX3031),
96 {0,}
97 };
98
99 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
100
101 static uint32_t crb_cmd_producer[4] = {
102 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
103 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
104 };
105
106 void
107 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
108 struct nx_host_tx_ring *tx_ring)
109 {
110 NXWR32(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
111
112 if (netxen_tx_avail(tx_ring) <= TX_STOP_THRESH) {
113 netif_stop_queue(adapter->netdev);
114 smp_mb();
115 }
116 }
117
118 static uint32_t crb_cmd_consumer[4] = {
119 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
120 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
121 };
122
123 static inline void
124 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
125 struct nx_host_tx_ring *tx_ring)
126 {
127 NXWR32(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
128 }
129
130 static uint32_t msi_tgt_status[8] = {
131 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
132 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
133 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
134 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
135 };
136
137 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
138
139 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
140 {
141 struct netxen_adapter *adapter = sds_ring->adapter;
142
143 NXWR32(adapter, sds_ring->crb_intr_mask, 0);
144 }
145
146 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
147 {
148 struct netxen_adapter *adapter = sds_ring->adapter;
149
150 NXWR32(adapter, sds_ring->crb_intr_mask, 0x1);
151
152 if (!NETXEN_IS_MSI_FAMILY(adapter))
153 adapter->pci_write_immediate(adapter,
154 adapter->legacy_intr.tgt_mask_reg, 0xfbff);
155 }
156
157 static int
158 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
159 {
160 int size = sizeof(struct nx_host_sds_ring) * count;
161
162 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
163
164 return (recv_ctx->sds_rings == NULL);
165 }
166
167 static void
168 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
169 {
170 if (recv_ctx->sds_rings != NULL)
171 kfree(recv_ctx->sds_rings);
172
173 recv_ctx->sds_rings = NULL;
174 }
175
176 static int
177 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
178 {
179 int ring;
180 struct nx_host_sds_ring *sds_ring;
181 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
182
183 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
184 return -ENOMEM;
185
186 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
187 sds_ring = &recv_ctx->sds_rings[ring];
188 netif_napi_add(netdev, &sds_ring->napi,
189 netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
190 }
191
192 return 0;
193 }
194
195 static void
196 netxen_napi_del(struct netxen_adapter *adapter)
197 {
198 int ring;
199 struct nx_host_sds_ring *sds_ring;
200 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
201
202 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
203 sds_ring = &recv_ctx->sds_rings[ring];
204 netif_napi_del(&sds_ring->napi);
205 }
206
207 netxen_free_sds_rings(&adapter->recv_ctx);
208 }
209
210 static void
211 netxen_napi_enable(struct netxen_adapter *adapter)
212 {
213 int ring;
214 struct nx_host_sds_ring *sds_ring;
215 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
216
217 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
218 sds_ring = &recv_ctx->sds_rings[ring];
219 napi_enable(&sds_ring->napi);
220 netxen_nic_enable_int(sds_ring);
221 }
222 }
223
224 static void
225 netxen_napi_disable(struct netxen_adapter *adapter)
226 {
227 int ring;
228 struct nx_host_sds_ring *sds_ring;
229 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
230
231 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
232 sds_ring = &recv_ctx->sds_rings[ring];
233 netxen_nic_disable_int(sds_ring);
234 napi_synchronize(&sds_ring->napi);
235 napi_disable(&sds_ring->napi);
236 }
237 }
238
239 static int nx_set_dma_mask(struct netxen_adapter *adapter)
240 {
241 struct pci_dev *pdev = adapter->pdev;
242 uint64_t mask, cmask;
243
244 adapter->pci_using_dac = 0;
245
246 mask = DMA_BIT_MASK(32);
247 cmask = DMA_BIT_MASK(32);
248
249 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
250 #ifndef CONFIG_IA64
251 mask = DMA_BIT_MASK(35);
252 #endif
253 } else {
254 mask = DMA_BIT_MASK(39);
255 cmask = mask;
256 }
257
258 if (pci_set_dma_mask(pdev, mask) == 0 &&
259 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
260 adapter->pci_using_dac = 1;
261 return 0;
262 }
263
264 return -EIO;
265 }
266
267 /* Update addressable range if firmware supports it */
268 static int
269 nx_update_dma_mask(struct netxen_adapter *adapter)
270 {
271 int change, shift, err;
272 uint64_t mask, old_mask, old_cmask;
273 struct pci_dev *pdev = adapter->pdev;
274
275 change = 0;
276
277 shift = NXRD32(adapter, CRB_DMA_SHIFT);
278 if (shift > 32)
279 return 0;
280
281 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
282 change = 1;
283 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
284 change = 1;
285
286 if (change) {
287 old_mask = pdev->dma_mask;
288 old_cmask = pdev->dev.coherent_dma_mask;
289
290 mask = DMA_BIT_MASK(32+shift);
291
292 err = pci_set_dma_mask(pdev, mask);
293 if (err)
294 goto err_out;
295
296 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
297
298 err = pci_set_consistent_dma_mask(pdev, mask);
299 if (err)
300 goto err_out;
301 }
302 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
303 }
304
305 return 0;
306
307 err_out:
308 pci_set_dma_mask(pdev, old_mask);
309 pci_set_consistent_dma_mask(pdev, old_cmask);
310 return err;
311 }
312
313 static void
314 netxen_check_options(struct netxen_adapter *adapter)
315 {
316 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
317 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
318 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
319 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
320 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
321 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
322 }
323
324 adapter->msix_supported = 0;
325 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
326 adapter->msix_supported = !!use_msi_x;
327 adapter->rss_supported = !!use_msi_x;
328 } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
329 switch (adapter->ahw.board_type) {
330 case NETXEN_BRDTYPE_P2_SB31_10G:
331 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
332 adapter->msix_supported = !!use_msi_x;
333 adapter->rss_supported = !!use_msi_x;
334 break;
335 default:
336 break;
337 }
338 }
339
340 adapter->num_txd = MAX_CMD_DESCRIPTORS;
341
342 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
343 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
344 adapter->max_rds_rings = 3;
345 } else {
346 adapter->num_lro_rxd = 0;
347 adapter->max_rds_rings = 2;
348 }
349 }
350
351 static int
352 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
353 {
354 u32 val, timeout;
355
356 if (first_boot == 0x55555555) {
357 /* This is the first boot after power up */
358 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
359
360 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
361 return 0;
362
363 /* PCI bus master workaround */
364 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
365 if (!(first_boot & 0x4)) {
366 first_boot |= 0x4;
367 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
368 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
369 }
370
371 /* This is the first boot after power up */
372 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
373 if (first_boot != 0x80000f) {
374 /* clear the register for future unloads/loads */
375 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
376 return -EIO;
377 }
378
379 /* Start P2 boot loader */
380 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
381 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
382 timeout = 0;
383 do {
384 msleep(1);
385 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
386
387 if (++timeout > 5000)
388 return -EIO;
389
390 } while (val == NETXEN_BDINFO_MAGIC);
391 }
392 return 0;
393 }
394
395 static void netxen_set_port_mode(struct netxen_adapter *adapter)
396 {
397 u32 val, data;
398
399 val = adapter->ahw.board_type;
400 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
401 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
402 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
403 data = NETXEN_PORT_MODE_802_3_AP;
404 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
405 } else if (port_mode == NETXEN_PORT_MODE_XG) {
406 data = NETXEN_PORT_MODE_XG;
407 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
408 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
409 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
410 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
411 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
412 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
413 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
414 } else {
415 data = NETXEN_PORT_MODE_AUTO_NEG;
416 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
417 }
418
419 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
420 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
421 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
422 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
423 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
424 }
425 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
426 }
427 }
428
429 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
430 {
431 u32 control;
432 int pos;
433
434 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
435 if (pos) {
436 pci_read_config_dword(pdev, pos, &control);
437 if (enable)
438 control |= PCI_MSIX_FLAGS_ENABLE;
439 else
440 control = 0;
441 pci_write_config_dword(pdev, pos, control);
442 }
443 }
444
445 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
446 {
447 int i;
448
449 for (i = 0; i < count; i++)
450 adapter->msix_entries[i].entry = i;
451 }
452
453 static int
454 netxen_read_mac_addr(struct netxen_adapter *adapter)
455 {
456 int i;
457 unsigned char *p;
458 __le64 mac_addr;
459 struct net_device *netdev = adapter->netdev;
460 struct pci_dev *pdev = adapter->pdev;
461
462 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
463 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
464 return -EIO;
465 } else {
466 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
467 return -EIO;
468 }
469
470 p = (unsigned char *)&mac_addr;
471 for (i = 0; i < 6; i++)
472 netdev->dev_addr[i] = *(p + 5 - i);
473
474 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
475
476 /* set station address */
477
478 if (!is_valid_ether_addr(netdev->perm_addr))
479 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
480
481 return 0;
482 }
483
484 int netxen_nic_set_mac(struct net_device *netdev, void *p)
485 {
486 struct netxen_adapter *adapter = netdev_priv(netdev);
487 struct sockaddr *addr = p;
488
489 if (!is_valid_ether_addr(addr->sa_data))
490 return -EINVAL;
491
492 if (netif_running(netdev)) {
493 netif_device_detach(netdev);
494 netxen_napi_disable(adapter);
495 }
496
497 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
498 adapter->macaddr_set(adapter, addr->sa_data);
499
500 if (netif_running(netdev)) {
501 netif_device_attach(netdev);
502 netxen_napi_enable(adapter);
503 }
504 return 0;
505 }
506
507 static void netxen_set_multicast_list(struct net_device *dev)
508 {
509 struct netxen_adapter *adapter = netdev_priv(dev);
510
511 adapter->set_multi(dev);
512 }
513
514 static const struct net_device_ops netxen_netdev_ops = {
515 .ndo_open = netxen_nic_open,
516 .ndo_stop = netxen_nic_close,
517 .ndo_start_xmit = netxen_nic_xmit_frame,
518 .ndo_get_stats = netxen_nic_get_stats,
519 .ndo_validate_addr = eth_validate_addr,
520 .ndo_set_multicast_list = netxen_set_multicast_list,
521 .ndo_set_mac_address = netxen_nic_set_mac,
522 .ndo_change_mtu = netxen_nic_change_mtu,
523 .ndo_tx_timeout = netxen_tx_timeout,
524 #ifdef CONFIG_NET_POLL_CONTROLLER
525 .ndo_poll_controller = netxen_nic_poll_controller,
526 #endif
527 };
528
529 static void
530 netxen_setup_intr(struct netxen_adapter *adapter)
531 {
532 struct netxen_legacy_intr_set *legacy_intrp;
533 struct pci_dev *pdev = adapter->pdev;
534 int err, num_msix;
535
536 if (adapter->rss_supported) {
537 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
538 MSIX_ENTRIES_PER_ADAPTER : 2;
539 } else
540 num_msix = 1;
541
542 adapter->max_sds_rings = 1;
543
544 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
545
546 if (adapter->ahw.revision_id >= NX_P3_B0)
547 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
548 else
549 legacy_intrp = &legacy_intr[0];
550 adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
551 adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
552 adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
553 adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
554
555 netxen_set_msix_bit(pdev, 0);
556
557 if (adapter->msix_supported) {
558
559 netxen_init_msix_entries(adapter, num_msix);
560 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
561 if (err == 0) {
562 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
563 netxen_set_msix_bit(pdev, 1);
564
565 if (adapter->rss_supported)
566 adapter->max_sds_rings = num_msix;
567
568 dev_info(&pdev->dev, "using msi-x interrupts\n");
569 return;
570 }
571
572 if (err > 0)
573 pci_disable_msix(pdev);
574
575 /* fall through for msi */
576 }
577
578 if (use_msi && !pci_enable_msi(pdev)) {
579 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
580 adapter->msi_tgt_status =
581 msi_tgt_status[adapter->ahw.pci_func];
582 dev_info(&pdev->dev, "using msi interrupts\n");
583 adapter->msix_entries[0].vector = pdev->irq;
584 return;
585 }
586
587 dev_info(&pdev->dev, "using legacy interrupts\n");
588 adapter->msix_entries[0].vector = pdev->irq;
589 }
590
591 static void
592 netxen_teardown_intr(struct netxen_adapter *adapter)
593 {
594 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
595 pci_disable_msix(adapter->pdev);
596 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
597 pci_disable_msi(adapter->pdev);
598 }
599
600 static void
601 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
602 {
603 if (adapter->ahw.db_base != NULL)
604 iounmap(adapter->ahw.db_base);
605 if (adapter->ahw.pci_base0 != NULL)
606 iounmap(adapter->ahw.pci_base0);
607 if (adapter->ahw.pci_base1 != NULL)
608 iounmap(adapter->ahw.pci_base1);
609 if (adapter->ahw.pci_base2 != NULL)
610 iounmap(adapter->ahw.pci_base2);
611 }
612
613 static int
614 netxen_setup_pci_map(struct netxen_adapter *adapter)
615 {
616 void __iomem *mem_ptr0 = NULL;
617 void __iomem *mem_ptr1 = NULL;
618 void __iomem *mem_ptr2 = NULL;
619 void __iomem *db_ptr = NULL;
620
621 unsigned long mem_base, mem_len, db_base, db_len = 0, pci_len0 = 0;
622
623 struct pci_dev *pdev = adapter->pdev;
624 int pci_func = adapter->ahw.pci_func;
625
626 int err = 0;
627
628 /*
629 * Set the CRB window to invalid. If any register in window 0 is
630 * accessed it should set the window to 0 and then reset it to 1.
631 */
632 adapter->curr_window = 255;
633 adapter->ahw.qdr_sn_window = -1;
634 adapter->ahw.ddr_mn_window = -1;
635
636 /* remap phys address */
637 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
638 mem_len = pci_resource_len(pdev, 0);
639 pci_len0 = 0;
640
641 adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
642 adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
643 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
644 adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
645 adapter->pci_set_window = netxen_nic_pci_set_window_128M;
646 adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
647 adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
648
649 /* 128 Meg of memory */
650 if (mem_len == NETXEN_PCI_128MB_SIZE) {
651 mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
652 mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
653 SECOND_PAGE_GROUP_SIZE);
654 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
655 THIRD_PAGE_GROUP_SIZE);
656 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
657 mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
658 mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
659 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
660 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
661 adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
662 adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
663 adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
664 adapter->pci_write_immediate =
665 netxen_nic_pci_write_immediate_2M;
666 adapter->pci_set_window = netxen_nic_pci_set_window_2M;
667 adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
668 adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
669
670 mem_ptr0 = pci_ioremap_bar(pdev, 0);
671 if (mem_ptr0 == NULL) {
672 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
673 return -EIO;
674 }
675 pci_len0 = mem_len;
676
677 adapter->ahw.ddr_mn_window = 0;
678 adapter->ahw.qdr_sn_window = 0;
679
680 adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
681 (pci_func * 0x20);
682 adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
683 if (pci_func < 4)
684 adapter->ahw.ms_win_crb += (pci_func * 0x20);
685 else
686 adapter->ahw.ms_win_crb +=
687 0xA0 + ((pci_func - 4) * 0x10);
688 } else {
689 return -EIO;
690 }
691
692 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
693
694 adapter->ahw.pci_base0 = mem_ptr0;
695 adapter->ahw.pci_len0 = pci_len0;
696 adapter->ahw.pci_base1 = mem_ptr1;
697 adapter->ahw.pci_base2 = mem_ptr2;
698
699 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
700 goto skip_doorbell;
701
702 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
703 db_len = pci_resource_len(pdev, 4);
704
705 if (db_len == 0) {
706 printk(KERN_ERR "%s: doorbell is disabled\n",
707 netxen_nic_driver_name);
708 err = -EIO;
709 goto err_out;
710 }
711
712 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
713 if (!db_ptr) {
714 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
715 netxen_nic_driver_name);
716 err = -EIO;
717 goto err_out;
718 }
719
720 skip_doorbell:
721 adapter->ahw.db_base = db_ptr;
722 adapter->ahw.db_len = db_len;
723 return 0;
724
725 err_out:
726 netxen_cleanup_pci_map(adapter);
727 return err;
728 }
729
730 static int
731 netxen_start_firmware(struct netxen_adapter *adapter, int request_fw)
732 {
733 int val, err, first_boot;
734 struct pci_dev *pdev = adapter->pdev;
735
736 int first_driver = 0;
737
738 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
739 first_driver = (adapter->portnum == 0);
740 else
741 first_driver = (adapter->ahw.pci_func == 0);
742
743 if (!first_driver)
744 goto wait_init;
745
746 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
747
748 err = netxen_check_hw_init(adapter, first_boot);
749 if (err) {
750 dev_err(&pdev->dev, "error in init HW init sequence\n");
751 return err;
752 }
753
754 if (request_fw)
755 netxen_request_firmware(adapter);
756
757 err = netxen_need_fw_reset(adapter);
758 if (err < 0)
759 return err;
760 if (err == 0)
761 goto wait_init;
762
763 if (first_boot != 0x55555555) {
764 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
765 netxen_pinit_from_rom(adapter, 0);
766 msleep(1);
767 }
768
769 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
770 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
771 netxen_set_port_mode(adapter);
772
773 netxen_load_firmware(adapter);
774
775 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
776
777 /* Initialize multicast addr pool owners */
778 val = 0x7654;
779 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
780 val |= 0x0f000000;
781 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
782
783 }
784
785 err = netxen_init_dummy_dma(adapter);
786 if (err)
787 return err;
788
789 /*
790 * Tell the hardware our version number.
791 */
792 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
793 | ((_NETXEN_NIC_LINUX_MINOR << 8))
794 | (_NETXEN_NIC_LINUX_SUBVERSION);
795 NXWR32(adapter, CRB_DRIVER_VERSION, val);
796
797 wait_init:
798 /* Handshake with the card before we register the devices. */
799 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
800 if (err) {
801 netxen_free_dummy_dma(adapter);
802 return err;
803 }
804
805 nx_update_dma_mask(adapter);
806
807 netxen_nic_get_firmware_info(adapter);
808
809 return 0;
810 }
811
812 static int
813 netxen_nic_request_irq(struct netxen_adapter *adapter)
814 {
815 irq_handler_t handler;
816 struct nx_host_sds_ring *sds_ring;
817 int err, ring;
818
819 unsigned long flags = IRQF_SAMPLE_RANDOM;
820 struct net_device *netdev = adapter->netdev;
821 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
822
823 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
824 handler = netxen_msix_intr;
825 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
826 handler = netxen_msi_intr;
827 else {
828 flags |= IRQF_SHARED;
829 handler = netxen_intr;
830 }
831 adapter->irq = netdev->irq;
832
833 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
834 sds_ring = &recv_ctx->sds_rings[ring];
835 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
836 err = request_irq(sds_ring->irq, handler,
837 flags, sds_ring->name, sds_ring);
838 if (err)
839 return err;
840 }
841
842 return 0;
843 }
844
845 static void
846 netxen_nic_free_irq(struct netxen_adapter *adapter)
847 {
848 int ring;
849 struct nx_host_sds_ring *sds_ring;
850
851 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
852
853 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
854 sds_ring = &recv_ctx->sds_rings[ring];
855 free_irq(sds_ring->irq, sds_ring);
856 }
857 }
858
859 static void
860 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
861 {
862 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
863 adapter->coal.normal.data.rx_time_us =
864 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
865 adapter->coal.normal.data.rx_packets =
866 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
867 adapter->coal.normal.data.tx_time_us =
868 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
869 adapter->coal.normal.data.tx_packets =
870 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
871 }
872
873 static int
874 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
875 {
876 int err;
877
878 err = adapter->init_port(adapter, adapter->physical_port);
879 if (err) {
880 printk(KERN_ERR "%s: Failed to initialize port %d\n",
881 netxen_nic_driver_name, adapter->portnum);
882 return err;
883 }
884 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
885 adapter->macaddr_set(adapter, netdev->dev_addr);
886
887 adapter->set_multi(netdev);
888 adapter->set_mtu(adapter, netdev->mtu);
889
890 adapter->ahw.linkup = 0;
891
892 if (adapter->max_sds_rings > 1)
893 netxen_config_rss(adapter, 1);
894
895 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
896 netxen_config_intr_coalesce(adapter);
897
898 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
899 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
900
901 netxen_napi_enable(adapter);
902
903 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
904 netxen_linkevent_request(adapter, 1);
905 else
906 netxen_nic_set_link_parameters(adapter);
907
908 mod_timer(&adapter->watchdog_timer, jiffies);
909
910 return 0;
911 }
912
913 static void
914 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
915 {
916 spin_lock(&adapter->tx_clean_lock);
917 netif_carrier_off(netdev);
918 netif_tx_disable(netdev);
919
920 if (adapter->stop_port)
921 adapter->stop_port(adapter);
922
923 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
924 netxen_p3_free_mac_list(adapter);
925
926 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
927
928 netxen_napi_disable(adapter);
929
930 netxen_release_tx_buffers(adapter);
931 spin_unlock(&adapter->tx_clean_lock);
932
933 del_timer_sync(&adapter->watchdog_timer);
934 }
935
936
937 static int
938 netxen_nic_attach(struct netxen_adapter *adapter)
939 {
940 struct net_device *netdev = adapter->netdev;
941 struct pci_dev *pdev = adapter->pdev;
942 int err, ring;
943 struct nx_host_rds_ring *rds_ring;
944 struct nx_host_tx_ring *tx_ring;
945
946 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
947 return 0;
948
949 err = netxen_init_firmware(adapter);
950 if (err)
951 return err;
952
953 err = netxen_napi_add(adapter, netdev);
954 if (err)
955 return err;
956
957 err = netxen_alloc_sw_resources(adapter);
958 if (err) {
959 printk(KERN_ERR "%s: Error in setting sw resources\n",
960 netdev->name);
961 return err;
962 }
963
964 netxen_nic_clear_stats(adapter);
965
966 err = netxen_alloc_hw_resources(adapter);
967 if (err) {
968 printk(KERN_ERR "%s: Error in setting hw resources\n",
969 netdev->name);
970 goto err_out_free_sw;
971 }
972
973 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
974 tx_ring = adapter->tx_ring;
975 tx_ring->crb_cmd_producer = crb_cmd_producer[adapter->portnum];
976 tx_ring->crb_cmd_consumer = crb_cmd_consumer[adapter->portnum];
977
978 tx_ring->producer = 0;
979 tx_ring->sw_consumer = 0;
980
981 netxen_nic_update_cmd_producer(adapter, tx_ring);
982 netxen_nic_update_cmd_consumer(adapter, tx_ring);
983 }
984
985 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
986 rds_ring = &adapter->recv_ctx.rds_rings[ring];
987 netxen_post_rx_buffers(adapter, ring, rds_ring);
988 }
989
990 err = netxen_nic_request_irq(adapter);
991 if (err) {
992 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
993 netdev->name);
994 goto err_out_free_rxbuf;
995 }
996
997 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
998 netxen_nic_init_coalesce_defaults(adapter);
999
1000 netxen_create_sysfs_entries(adapter);
1001
1002 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1003 return 0;
1004
1005 err_out_free_rxbuf:
1006 netxen_release_rx_buffers(adapter);
1007 netxen_free_hw_resources(adapter);
1008 err_out_free_sw:
1009 netxen_free_sw_resources(adapter);
1010 return err;
1011 }
1012
1013 static void
1014 netxen_nic_detach(struct netxen_adapter *adapter)
1015 {
1016 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1017 return;
1018
1019 netxen_remove_sysfs_entries(adapter);
1020
1021 netxen_free_hw_resources(adapter);
1022 netxen_release_rx_buffers(adapter);
1023 netxen_nic_free_irq(adapter);
1024 netxen_napi_del(adapter);
1025 netxen_free_sw_resources(adapter);
1026
1027 adapter->is_up = 0;
1028 }
1029
1030 int
1031 netxen_nic_reset_context(struct netxen_adapter *adapter)
1032 {
1033 int err = 0;
1034 struct net_device *netdev = adapter->netdev;
1035
1036 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1037
1038 if (netif_running(netdev))
1039 netxen_nic_down(adapter, netdev);
1040
1041 netxen_nic_detach(adapter);
1042
1043 err = netxen_nic_attach(adapter);
1044 if (err)
1045 goto done;
1046
1047 if (netif_running(netdev))
1048 err = netxen_nic_up(adapter, netdev);
1049 }
1050 done:
1051 return err;
1052 }
1053
1054 static int
1055 netxen_setup_netdev(struct netxen_adapter *adapter,
1056 struct net_device *netdev)
1057 {
1058 int err = 0;
1059 struct pci_dev *pdev = adapter->pdev;
1060
1061 adapter->rx_csum = 1;
1062 adapter->mc_enabled = 0;
1063 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1064 adapter->max_mc_count = 38;
1065 else
1066 adapter->max_mc_count = 16;
1067
1068 netdev->netdev_ops = &netxen_netdev_ops;
1069 netdev->watchdog_timeo = 2*HZ;
1070
1071 netxen_nic_change_mtu(netdev, netdev->mtu);
1072
1073 SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1074
1075 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1076 netdev->features |= (NETIF_F_GRO);
1077 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1078
1079 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1080 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1081 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1082 }
1083
1084 if (adapter->pci_using_dac) {
1085 netdev->features |= NETIF_F_HIGHDMA;
1086 netdev->vlan_features |= NETIF_F_HIGHDMA;
1087 }
1088
1089 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1090 netdev->features |= (NETIF_F_HW_VLAN_TX);
1091
1092 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1093 netdev->features |= NETIF_F_LRO;
1094
1095 netdev->irq = adapter->msix_entries[0].vector;
1096
1097 err = netxen_napi_add(adapter, netdev);
1098 if (err)
1099 return err;
1100
1101 init_timer(&adapter->watchdog_timer);
1102 adapter->watchdog_timer.function = &netxen_watchdog;
1103 adapter->watchdog_timer.data = (unsigned long)adapter;
1104 INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
1105 INIT_WORK(&adapter->tx_timeout_task, netxen_reset_task);
1106
1107 if (netxen_read_mac_addr(adapter))
1108 dev_warn(&pdev->dev, "failed to read mac addr\n");
1109
1110 netif_carrier_off(netdev);
1111 netif_stop_queue(netdev);
1112
1113 err = register_netdev(netdev);
1114 if (err) {
1115 dev_err(&pdev->dev, "failed to register net device\n");
1116 return err;
1117 }
1118
1119 return 0;
1120 }
1121
1122 static int __devinit
1123 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1124 {
1125 struct net_device *netdev = NULL;
1126 struct netxen_adapter *adapter = NULL;
1127 int i = 0, err;
1128 int pci_func_id = PCI_FUNC(pdev->devfn);
1129 uint8_t revision_id;
1130
1131 if (pdev->class != 0x020000) {
1132 printk(KERN_DEBUG "NetXen function %d, class %x will not "
1133 "be enabled.\n",pci_func_id, pdev->class);
1134 return -ENODEV;
1135 }
1136
1137 if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
1138 printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
1139 "will not be enabled.\n",
1140 NX_P3_A0, NX_P3_B1);
1141 return -ENODEV;
1142 }
1143
1144 if ((err = pci_enable_device(pdev)))
1145 return err;
1146
1147 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1148 err = -ENODEV;
1149 goto err_out_disable_pdev;
1150 }
1151
1152 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1153 goto err_out_disable_pdev;
1154
1155 pci_set_master(pdev);
1156
1157 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1158 if(!netdev) {
1159 dev_err(&pdev->dev, "failed to allocate net_device\n");
1160 err = -ENOMEM;
1161 goto err_out_free_res;
1162 }
1163
1164 SET_NETDEV_DEV(netdev, &pdev->dev);
1165
1166 adapter = netdev_priv(netdev);
1167 adapter->netdev = netdev;
1168 adapter->pdev = pdev;
1169 adapter->ahw.pci_func = pci_func_id;
1170
1171 revision_id = pdev->revision;
1172 adapter->ahw.revision_id = revision_id;
1173
1174 err = nx_set_dma_mask(adapter);
1175 if (err)
1176 goto err_out_free_netdev;
1177
1178 rwlock_init(&adapter->adapter_lock);
1179 spin_lock_init(&adapter->tx_clean_lock);
1180 INIT_LIST_HEAD(&adapter->mac_list);
1181
1182 err = netxen_setup_pci_map(adapter);
1183 if (err)
1184 goto err_out_free_netdev;
1185
1186 /* This will be reset for mezz cards */
1187 adapter->portnum = pci_func_id;
1188
1189 err = netxen_nic_get_board_info(adapter);
1190 if (err) {
1191 dev_err(&pdev->dev, "Error getting board config info.\n");
1192 goto err_out_iounmap;
1193 }
1194
1195 netxen_initialize_adapter_ops(adapter);
1196
1197 /* Mezz cards have PCI function 0,2,3 enabled */
1198 switch (adapter->ahw.board_type) {
1199 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1200 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1201 if (pci_func_id >= 2)
1202 adapter->portnum = pci_func_id - 2;
1203 break;
1204 default:
1205 break;
1206 }
1207
1208 err = netxen_start_firmware(adapter, 1);
1209 if (err)
1210 goto err_out_iounmap;
1211
1212 /*
1213 * See if the firmware gave us a virtual-physical port mapping.
1214 */
1215 adapter->physical_port = adapter->portnum;
1216 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1217 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1218 if (i != 0x55555555)
1219 adapter->physical_port = i;
1220 }
1221
1222 netxen_check_options(adapter);
1223
1224 netxen_setup_intr(adapter);
1225
1226 err = netxen_setup_netdev(adapter, netdev);
1227 if (err)
1228 goto err_out_disable_msi;
1229
1230 pci_set_drvdata(pdev, adapter);
1231
1232 switch (adapter->ahw.port_type) {
1233 case NETXEN_NIC_GBE:
1234 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1235 adapter->netdev->name);
1236 break;
1237 case NETXEN_NIC_XGBE:
1238 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1239 adapter->netdev->name);
1240 break;
1241 }
1242
1243 return 0;
1244
1245 err_out_disable_msi:
1246 netxen_teardown_intr(adapter);
1247
1248 netxen_free_dummy_dma(adapter);
1249
1250 err_out_iounmap:
1251 netxen_cleanup_pci_map(adapter);
1252
1253 err_out_free_netdev:
1254 free_netdev(netdev);
1255
1256 err_out_free_res:
1257 pci_release_regions(pdev);
1258
1259 err_out_disable_pdev:
1260 pci_set_drvdata(pdev, NULL);
1261 pci_disable_device(pdev);
1262 return err;
1263 }
1264
1265 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1266 {
1267 struct netxen_adapter *adapter;
1268 struct net_device *netdev;
1269
1270 adapter = pci_get_drvdata(pdev);
1271 if (adapter == NULL)
1272 return;
1273
1274 netdev = adapter->netdev;
1275
1276 unregister_netdev(netdev);
1277
1278 cancel_work_sync(&adapter->watchdog_task);
1279 cancel_work_sync(&adapter->tx_timeout_task);
1280
1281 netxen_nic_detach(adapter);
1282
1283 if (adapter->portnum == 0)
1284 netxen_free_dummy_dma(adapter);
1285
1286 netxen_teardown_intr(adapter);
1287
1288 netxen_cleanup_pci_map(adapter);
1289
1290 netxen_release_firmware(adapter);
1291
1292 pci_release_regions(pdev);
1293 pci_disable_device(pdev);
1294 pci_set_drvdata(pdev, NULL);
1295
1296 free_netdev(netdev);
1297 }
1298 static int __netxen_nic_shutdown(struct pci_dev *pdev)
1299 {
1300 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1301 struct net_device *netdev = adapter->netdev;
1302 int retval;
1303
1304 netif_device_detach(netdev);
1305
1306 if (netif_running(netdev))
1307 netxen_nic_down(adapter, netdev);
1308
1309 cancel_work_sync(&adapter->watchdog_task);
1310 cancel_work_sync(&adapter->tx_timeout_task);
1311
1312 netxen_nic_detach(adapter);
1313
1314 if (adapter->portnum == 0)
1315 netxen_free_dummy_dma(adapter);
1316
1317 retval = pci_save_state(pdev);
1318 if (retval)
1319 return retval;
1320
1321 if (netxen_nic_wol_supported(adapter)) {
1322 pci_enable_wake(pdev, PCI_D3cold, 1);
1323 pci_enable_wake(pdev, PCI_D3hot, 1);
1324 }
1325
1326 pci_disable_device(pdev);
1327
1328 return 0;
1329 }
1330 static void netxen_nic_shutdown(struct pci_dev *pdev)
1331 {
1332 if (__netxen_nic_shutdown(pdev))
1333 return;
1334 }
1335 #ifdef CONFIG_PM
1336 static int
1337 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1338 {
1339 int retval;
1340
1341 retval = __netxen_nic_shutdown(pdev);
1342 if (retval)
1343 return retval;
1344
1345 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1346 return 0;
1347 }
1348
1349 static int
1350 netxen_nic_resume(struct pci_dev *pdev)
1351 {
1352 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1353 struct net_device *netdev = adapter->netdev;
1354 int err;
1355
1356 pci_set_power_state(pdev, PCI_D0);
1357 pci_restore_state(pdev);
1358
1359 err = pci_enable_device(pdev);
1360 if (err)
1361 return err;
1362
1363 adapter->curr_window = 255;
1364
1365 err = netxen_start_firmware(adapter, 0);
1366 if (err) {
1367 dev_err(&pdev->dev, "failed to start firmware\n");
1368 return err;
1369 }
1370
1371 if (netif_running(netdev)) {
1372 err = netxen_nic_attach(adapter);
1373 if (err)
1374 return err;
1375
1376 err = netxen_nic_up(adapter, netdev);
1377 if (err)
1378 return err;
1379
1380 netif_device_attach(netdev);
1381 }
1382
1383 return 0;
1384 }
1385 #endif
1386
1387 static int netxen_nic_open(struct net_device *netdev)
1388 {
1389 struct netxen_adapter *adapter = netdev_priv(netdev);
1390 int err = 0;
1391
1392 if (adapter->driver_mismatch)
1393 return -EIO;
1394
1395 err = netxen_nic_attach(adapter);
1396 if (err)
1397 return err;
1398
1399 err = netxen_nic_up(adapter, netdev);
1400 if (err)
1401 goto err_out;
1402
1403 netif_start_queue(netdev);
1404
1405 return 0;
1406
1407 err_out:
1408 netxen_nic_detach(adapter);
1409 return err;
1410 }
1411
1412 /*
1413 * netxen_nic_close - Disables a network interface entry point
1414 */
1415 static int netxen_nic_close(struct net_device *netdev)
1416 {
1417 struct netxen_adapter *adapter = netdev_priv(netdev);
1418
1419 netxen_nic_down(adapter, netdev);
1420 return 0;
1421 }
1422
1423 static void
1424 netxen_tso_check(struct net_device *netdev,
1425 struct nx_host_tx_ring *tx_ring,
1426 struct cmd_desc_type0 *first_desc,
1427 struct sk_buff *skb)
1428 {
1429 u8 opcode = TX_ETHER_PKT;
1430 __be16 protocol = skb->protocol;
1431 u16 flags = 0, vid = 0;
1432 u32 producer;
1433 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1434 struct cmd_desc_type0 *hwdesc;
1435 struct vlan_ethhdr *vh;
1436
1437 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1438
1439 vh = (struct vlan_ethhdr *)skb->data;
1440 protocol = vh->h_vlan_encapsulated_proto;
1441 flags = FLAGS_VLAN_TAGGED;
1442
1443 } else if (vlan_tx_tag_present(skb)) {
1444
1445 flags = FLAGS_VLAN_OOB;
1446 vid = vlan_tx_tag_get(skb);
1447 netxen_set_tx_vlan_tci(first_desc, vid);
1448 vlan_oob = 1;
1449 }
1450
1451 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1452 skb_shinfo(skb)->gso_size > 0) {
1453
1454 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1455
1456 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1457 first_desc->total_hdr_length = hdr_len;
1458 if (vlan_oob) {
1459 first_desc->total_hdr_length += VLAN_HLEN;
1460 first_desc->tcp_hdr_offset = VLAN_HLEN;
1461 first_desc->ip_hdr_offset = VLAN_HLEN;
1462 /* Only in case of TSO on vlan device */
1463 flags |= FLAGS_VLAN_TAGGED;
1464 }
1465
1466 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1467 TX_TCP_LSO6 : TX_TCP_LSO;
1468 tso = 1;
1469
1470 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1471 u8 l4proto;
1472
1473 if (protocol == cpu_to_be16(ETH_P_IP)) {
1474 l4proto = ip_hdr(skb)->protocol;
1475
1476 if (l4proto == IPPROTO_TCP)
1477 opcode = TX_TCP_PKT;
1478 else if(l4proto == IPPROTO_UDP)
1479 opcode = TX_UDP_PKT;
1480 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1481 l4proto = ipv6_hdr(skb)->nexthdr;
1482
1483 if (l4proto == IPPROTO_TCP)
1484 opcode = TX_TCPV6_PKT;
1485 else if(l4proto == IPPROTO_UDP)
1486 opcode = TX_UDPV6_PKT;
1487 }
1488 }
1489
1490 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1491 first_desc->ip_hdr_offset += skb_network_offset(skb);
1492 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1493
1494 if (!tso)
1495 return;
1496
1497 /* For LSO, we need to copy the MAC/IP/TCP headers into
1498 * the descriptor ring
1499 */
1500 producer = tx_ring->producer;
1501 copied = 0;
1502 offset = 2;
1503
1504 if (vlan_oob) {
1505 /* Create a TSO vlan header template for firmware */
1506
1507 hwdesc = &tx_ring->desc_head[producer];
1508 tx_ring->cmd_buf_arr[producer].skb = NULL;
1509
1510 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1511 hdr_len + VLAN_HLEN);
1512
1513 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1514 skb_copy_from_linear_data(skb, vh, 12);
1515 vh->h_vlan_proto = htons(ETH_P_8021Q);
1516 vh->h_vlan_TCI = htons(vid);
1517 skb_copy_from_linear_data_offset(skb, 12,
1518 (char *)vh + 16, copy_len - 16);
1519
1520 copied = copy_len - VLAN_HLEN;
1521 offset = 0;
1522
1523 producer = get_next_index(producer, tx_ring->num_desc);
1524 }
1525
1526 while (copied < hdr_len) {
1527
1528 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1529 (hdr_len - copied));
1530
1531 hwdesc = &tx_ring->desc_head[producer];
1532 tx_ring->cmd_buf_arr[producer].skb = NULL;
1533
1534 skb_copy_from_linear_data_offset(skb, copied,
1535 (char *)hwdesc + offset, copy_len);
1536
1537 copied += copy_len;
1538 offset = 0;
1539
1540 producer = get_next_index(producer, tx_ring->num_desc);
1541 }
1542
1543 tx_ring->producer = producer;
1544 barrier();
1545 }
1546
1547 static int
1548 netxen_map_tx_skb(struct pci_dev *pdev,
1549 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1550 {
1551 struct netxen_skb_frag *nf;
1552 struct skb_frag_struct *frag;
1553 int i, nr_frags;
1554 dma_addr_t map;
1555
1556 nr_frags = skb_shinfo(skb)->nr_frags;
1557 nf = &pbuf->frag_array[0];
1558
1559 map = pci_map_single(pdev, skb->data,
1560 skb_headlen(skb), PCI_DMA_TODEVICE);
1561 if (pci_dma_mapping_error(pdev, map))
1562 goto out_err;
1563
1564 nf->dma = map;
1565 nf->length = skb_headlen(skb);
1566
1567 for (i = 0; i < nr_frags; i++) {
1568 frag = &skb_shinfo(skb)->frags[i];
1569 nf = &pbuf->frag_array[i+1];
1570
1571 map = pci_map_page(pdev, frag->page, frag->page_offset,
1572 frag->size, PCI_DMA_TODEVICE);
1573 if (pci_dma_mapping_error(pdev, map))
1574 goto unwind;
1575
1576 nf->dma = map;
1577 nf->length = frag->size;
1578 }
1579
1580 return 0;
1581
1582 unwind:
1583 while (i > 0) {
1584 nf = &pbuf->frag_array[i];
1585 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1586 }
1587
1588 nf = &pbuf->frag_array[0];
1589 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1590
1591 out_err:
1592 return -ENOMEM;
1593 }
1594
1595 static inline void
1596 netxen_clear_cmddesc(u64 *desc)
1597 {
1598 desc[0] = 0ULL;
1599 desc[2] = 0ULL;
1600 }
1601
1602 static int
1603 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1604 {
1605 struct netxen_adapter *adapter = netdev_priv(netdev);
1606 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1607 struct netxen_cmd_buffer *pbuf;
1608 struct netxen_skb_frag *buffrag;
1609 struct cmd_desc_type0 *hwdesc, *first_desc;
1610 struct pci_dev *pdev;
1611 int i, k;
1612
1613 u32 producer;
1614 int frag_count, no_of_desc;
1615 u32 num_txd = tx_ring->num_desc;
1616
1617 frag_count = skb_shinfo(skb)->nr_frags + 1;
1618
1619 /* 4 fragments per cmd des */
1620 no_of_desc = (frag_count + 3) >> 2;
1621
1622 if (unlikely(no_of_desc + 2) > netxen_tx_avail(tx_ring)) {
1623 netif_stop_queue(netdev);
1624 return NETDEV_TX_BUSY;
1625 }
1626
1627 producer = tx_ring->producer;
1628 pbuf = &tx_ring->cmd_buf_arr[producer];
1629
1630 pdev = adapter->pdev;
1631
1632 if (netxen_map_tx_skb(pdev, skb, pbuf))
1633 goto drop_packet;
1634
1635 pbuf->skb = skb;
1636 pbuf->frag_count = frag_count;
1637
1638 first_desc = hwdesc = &tx_ring->desc_head[producer];
1639 netxen_clear_cmddesc((u64 *)hwdesc);
1640
1641 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
1642 netxen_set_tx_port(first_desc, adapter->portnum);
1643
1644 for (i = 0; i < frag_count; i++) {
1645
1646 k = i % 4;
1647
1648 if ((k == 0) && (i > 0)) {
1649 /* move to next desc.*/
1650 producer = get_next_index(producer, num_txd);
1651 hwdesc = &tx_ring->desc_head[producer];
1652 netxen_clear_cmddesc((u64 *)hwdesc);
1653 tx_ring->cmd_buf_arr[producer].skb = NULL;
1654 }
1655
1656 buffrag = &pbuf->frag_array[i];
1657
1658 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1659 switch (k) {
1660 case 0:
1661 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1662 break;
1663 case 1:
1664 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1665 break;
1666 case 2:
1667 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1668 break;
1669 case 3:
1670 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1671 break;
1672 }
1673 }
1674
1675 tx_ring->producer = get_next_index(producer, num_txd);
1676
1677 netxen_tso_check(netdev, tx_ring, first_desc, skb);
1678
1679 netxen_nic_update_cmd_producer(adapter, tx_ring);
1680
1681 adapter->stats.txbytes += skb->len;
1682 adapter->stats.xmitcalled++;
1683
1684 return NETDEV_TX_OK;
1685
1686 drop_packet:
1687 adapter->stats.txdropped++;
1688 dev_kfree_skb_any(skb);
1689 return NETDEV_TX_OK;
1690 }
1691
1692 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
1693 {
1694 struct net_device *netdev = adapter->netdev;
1695 uint32_t temp, temp_state, temp_val;
1696 int rv = 0;
1697
1698 temp = NXRD32(adapter, CRB_TEMP_STATE);
1699
1700 temp_state = nx_get_temp_state(temp);
1701 temp_val = nx_get_temp_val(temp);
1702
1703 if (temp_state == NX_TEMP_PANIC) {
1704 printk(KERN_ALERT
1705 "%s: Device temperature %d degrees C exceeds"
1706 " maximum allowed. Hardware has been shut down.\n",
1707 netdev->name, temp_val);
1708 rv = 1;
1709 } else if (temp_state == NX_TEMP_WARN) {
1710 if (adapter->temp == NX_TEMP_NORMAL) {
1711 printk(KERN_ALERT
1712 "%s: Device temperature %d degrees C "
1713 "exceeds operating range."
1714 " Immediate action needed.\n",
1715 netdev->name, temp_val);
1716 }
1717 } else {
1718 if (adapter->temp == NX_TEMP_WARN) {
1719 printk(KERN_INFO
1720 "%s: Device temperature is now %d degrees C"
1721 " in normal range.\n", netdev->name,
1722 temp_val);
1723 }
1724 }
1725 adapter->temp = temp_state;
1726 return rv;
1727 }
1728
1729 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
1730 {
1731 struct net_device *netdev = adapter->netdev;
1732
1733 if (adapter->ahw.linkup && !linkup) {
1734 printk(KERN_INFO "%s: %s NIC Link is down\n",
1735 netxen_nic_driver_name, netdev->name);
1736 adapter->ahw.linkup = 0;
1737 if (netif_running(netdev)) {
1738 netif_carrier_off(netdev);
1739 netif_stop_queue(netdev);
1740 }
1741 adapter->link_changed = !adapter->has_link_events;
1742 } else if (!adapter->ahw.linkup && linkup) {
1743 printk(KERN_INFO "%s: %s NIC Link is up\n",
1744 netxen_nic_driver_name, netdev->name);
1745 adapter->ahw.linkup = 1;
1746 if (netif_running(netdev)) {
1747 netif_carrier_on(netdev);
1748 netif_wake_queue(netdev);
1749 }
1750 adapter->link_changed = !adapter->has_link_events;
1751 }
1752 }
1753
1754 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
1755 {
1756 u32 val, port, linkup;
1757
1758 port = adapter->physical_port;
1759
1760 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1761 val = NXRD32(adapter, CRB_XG_STATE_P3);
1762 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
1763 linkup = (val == XG_LINK_UP_P3);
1764 } else {
1765 val = NXRD32(adapter, CRB_XG_STATE);
1766 if (adapter->ahw.port_type == NETXEN_NIC_GBE)
1767 linkup = (val >> port) & 1;
1768 else {
1769 val = (val >> port*8) & 0xff;
1770 linkup = (val == XG_LINK_UP);
1771 }
1772 }
1773
1774 netxen_advert_link_change(adapter, linkup);
1775 }
1776
1777 static void netxen_nic_thermal_shutdown(struct netxen_adapter *adapter)
1778 {
1779 struct net_device *netdev = adapter->netdev;
1780
1781 netif_device_detach(netdev);
1782 netxen_nic_down(adapter, netdev);
1783 netxen_nic_detach(adapter);
1784 }
1785
1786 static void netxen_watchdog(unsigned long v)
1787 {
1788 struct netxen_adapter *adapter = (struct netxen_adapter *)v;
1789
1790 if (netxen_nic_check_temp(adapter))
1791 goto do_sched;
1792
1793 if (!adapter->has_link_events) {
1794 netxen_nic_handle_phy_intr(adapter);
1795
1796 if (adapter->link_changed)
1797 goto do_sched;
1798 }
1799
1800 if (netif_running(adapter->netdev))
1801 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1802
1803 return;
1804
1805 do_sched:
1806 schedule_work(&adapter->watchdog_task);
1807 }
1808
1809 void netxen_watchdog_task(struct work_struct *work)
1810 {
1811 struct netxen_adapter *adapter =
1812 container_of(work, struct netxen_adapter, watchdog_task);
1813
1814 if (adapter->temp == NX_TEMP_PANIC) {
1815 netxen_nic_thermal_shutdown(adapter);
1816 return;
1817 }
1818
1819 if (adapter->link_changed)
1820 netxen_nic_set_link_parameters(adapter);
1821
1822 if (netif_running(adapter->netdev))
1823 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1824 }
1825
1826 static void netxen_tx_timeout(struct net_device *netdev)
1827 {
1828 struct netxen_adapter *adapter = netdev_priv(netdev);
1829
1830 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1831 schedule_work(&adapter->tx_timeout_task);
1832 }
1833
1834 static void netxen_reset_task(struct work_struct *work)
1835 {
1836 struct netxen_adapter *adapter =
1837 container_of(work, struct netxen_adapter, tx_timeout_task);
1838
1839 if (!netif_running(adapter->netdev))
1840 return;
1841
1842 netxen_napi_disable(adapter);
1843
1844 adapter->netdev->trans_start = jiffies;
1845
1846 netxen_napi_enable(adapter);
1847 netif_wake_queue(adapter->netdev);
1848 }
1849
1850 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
1851 {
1852 struct netxen_adapter *adapter = netdev_priv(netdev);
1853 struct net_device_stats *stats = &adapter->net_stats;
1854
1855 memset(stats, 0, sizeof(*stats));
1856
1857 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1858 stats->tx_packets = adapter->stats.xmitfinished;
1859 stats->rx_bytes = adapter->stats.rxbytes;
1860 stats->tx_bytes = adapter->stats.txbytes;
1861 stats->rx_dropped = adapter->stats.rxdropped;
1862 stats->tx_dropped = adapter->stats.txdropped;
1863
1864 return stats;
1865 }
1866
1867 static irqreturn_t netxen_intr(int irq, void *data)
1868 {
1869 struct nx_host_sds_ring *sds_ring = data;
1870 struct netxen_adapter *adapter = sds_ring->adapter;
1871 u32 status = 0;
1872
1873 status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1874
1875 if (!(status & adapter->legacy_intr.int_vec_bit))
1876 return IRQ_NONE;
1877
1878 if (adapter->ahw.revision_id >= NX_P3_B1) {
1879 /* check interrupt state machine, to be sure */
1880 status = adapter->pci_read_immediate(adapter,
1881 ISR_INT_STATE_REG);
1882 if (!ISR_LEGACY_INT_TRIGGERED(status))
1883 return IRQ_NONE;
1884
1885 } else {
1886 unsigned long our_int = 0;
1887
1888 our_int = NXRD32(adapter, CRB_INT_VECTOR);
1889
1890 /* not our interrupt */
1891 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
1892 return IRQ_NONE;
1893
1894 /* claim interrupt */
1895 NXWR32(adapter, CRB_INT_VECTOR, (our_int & 0xffffffff));
1896 }
1897
1898 /* clear interrupt */
1899 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1900 netxen_nic_disable_int(sds_ring);
1901
1902 adapter->pci_write_immediate(adapter,
1903 adapter->legacy_intr.tgt_status_reg,
1904 0xffffffff);
1905 /* read twice to ensure write is flushed */
1906 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1907 adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
1908
1909 napi_schedule(&sds_ring->napi);
1910
1911 return IRQ_HANDLED;
1912 }
1913
1914 static irqreturn_t netxen_msi_intr(int irq, void *data)
1915 {
1916 struct nx_host_sds_ring *sds_ring = data;
1917 struct netxen_adapter *adapter = sds_ring->adapter;
1918
1919 /* clear interrupt */
1920 adapter->pci_write_immediate(adapter,
1921 adapter->msi_tgt_status, 0xffffffff);
1922
1923 napi_schedule(&sds_ring->napi);
1924 return IRQ_HANDLED;
1925 }
1926
1927 static irqreturn_t netxen_msix_intr(int irq, void *data)
1928 {
1929 struct nx_host_sds_ring *sds_ring = data;
1930
1931 napi_schedule(&sds_ring->napi);
1932 return IRQ_HANDLED;
1933 }
1934
1935 static int netxen_nic_poll(struct napi_struct *napi, int budget)
1936 {
1937 struct nx_host_sds_ring *sds_ring =
1938 container_of(napi, struct nx_host_sds_ring, napi);
1939
1940 struct netxen_adapter *adapter = sds_ring->adapter;
1941
1942 int tx_complete;
1943 int work_done;
1944
1945 tx_complete = netxen_process_cmd_ring(adapter);
1946
1947 work_done = netxen_process_rcv_ring(sds_ring, budget);
1948
1949 if ((work_done < budget) && tx_complete) {
1950 napi_complete(&sds_ring->napi);
1951 if (netif_running(adapter->netdev))
1952 netxen_nic_enable_int(sds_ring);
1953 }
1954
1955 return work_done;
1956 }
1957
1958 #ifdef CONFIG_NET_POLL_CONTROLLER
1959 static void netxen_nic_poll_controller(struct net_device *netdev)
1960 {
1961 struct netxen_adapter *adapter = netdev_priv(netdev);
1962 disable_irq(adapter->irq);
1963 netxen_intr(adapter->irq, adapter);
1964 enable_irq(adapter->irq);
1965 }
1966 #endif
1967
1968 static ssize_t
1969 netxen_store_bridged_mode(struct device *dev,
1970 struct device_attribute *attr, const char *buf, size_t len)
1971 {
1972 struct net_device *net = to_net_dev(dev);
1973 struct netxen_adapter *adapter = netdev_priv(net);
1974 unsigned long new;
1975 int ret = -EINVAL;
1976
1977 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
1978 goto err_out;
1979
1980 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1981 goto err_out;
1982
1983 if (strict_strtoul(buf, 2, &new))
1984 goto err_out;
1985
1986 if (!netxen_config_bridged_mode(adapter, !!new))
1987 ret = len;
1988
1989 err_out:
1990 return ret;
1991 }
1992
1993 static ssize_t
1994 netxen_show_bridged_mode(struct device *dev,
1995 struct device_attribute *attr, char *buf)
1996 {
1997 struct net_device *net = to_net_dev(dev);
1998 struct netxen_adapter *adapter;
1999 int bridged_mode = 0;
2000
2001 adapter = netdev_priv(net);
2002
2003 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2004 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2005
2006 return sprintf(buf, "%d\n", bridged_mode);
2007 }
2008
2009 static struct device_attribute dev_attr_bridged_mode = {
2010 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2011 .show = netxen_show_bridged_mode,
2012 .store = netxen_store_bridged_mode,
2013 };
2014
2015 static void
2016 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
2017 {
2018 struct net_device *netdev = adapter->netdev;
2019 struct device *dev = &netdev->dev;
2020
2021 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
2022 /* bridged_mode control */
2023 if (device_create_file(dev, &dev_attr_bridged_mode)) {
2024 dev_warn(&netdev->dev,
2025 "failed to create bridged_mode sysfs entry\n");
2026 }
2027 }
2028 }
2029
2030 static void
2031 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
2032 {
2033 struct net_device *netdev = adapter->netdev;
2034 struct device *dev = &netdev->dev;
2035
2036 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2037 device_remove_file(dev, &dev_attr_bridged_mode);
2038 }
2039
2040 static void netxen_watchdog(unsigned long);
2041
2042 #ifdef CONFIG_INET
2043
2044 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
2045
2046 static int
2047 netxen_destip_supported(struct netxen_adapter *adapter)
2048 {
2049 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2050 return 0;
2051
2052 if (adapter->ahw.cut_through)
2053 return 0;
2054
2055 return 1;
2056 }
2057
2058 static int netxen_netdev_event(struct notifier_block *this,
2059 unsigned long event, void *ptr)
2060 {
2061 struct netxen_adapter *adapter;
2062 struct net_device *dev = (struct net_device *)ptr;
2063 struct in_device *indev;
2064
2065 recheck:
2066 if (dev == NULL)
2067 goto done;
2068
2069 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2070 dev = vlan_dev_real_dev(dev);
2071 goto recheck;
2072 }
2073
2074 if (!is_netxen_netdev(dev))
2075 goto done;
2076
2077 adapter = netdev_priv(dev);
2078
2079 if (!adapter || !netxen_destip_supported(adapter))
2080 goto done;
2081
2082 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2083 goto done;
2084
2085 indev = in_dev_get(dev);
2086 if (!indev)
2087 goto done;
2088
2089 for_ifa(indev) {
2090 switch (event) {
2091 case NETDEV_UP:
2092 netxen_config_ipaddr(adapter,
2093 ifa->ifa_address, NX_IP_UP);
2094 break;
2095 case NETDEV_DOWN:
2096 netxen_config_ipaddr(adapter,
2097 ifa->ifa_address, NX_IP_DOWN);
2098 break;
2099 default:
2100 break;
2101 }
2102 } endfor_ifa(indev);
2103
2104 in_dev_put(indev);
2105 done:
2106 return NOTIFY_DONE;
2107 }
2108
2109 static int
2110 netxen_inetaddr_event(struct notifier_block *this,
2111 unsigned long event, void *ptr)
2112 {
2113 struct netxen_adapter *adapter;
2114 struct net_device *dev;
2115
2116 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2117
2118 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2119
2120 recheck:
2121 if (dev == NULL || !netif_running(dev))
2122 goto done;
2123
2124 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2125 dev = vlan_dev_real_dev(dev);
2126 goto recheck;
2127 }
2128
2129 if (!is_netxen_netdev(dev))
2130 goto done;
2131
2132 adapter = netdev_priv(dev);
2133
2134 if (!adapter || !netxen_destip_supported(adapter))
2135 goto done;
2136
2137 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2138 goto done;
2139
2140 switch (event) {
2141 case NETDEV_UP:
2142 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
2143 break;
2144 case NETDEV_DOWN:
2145 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
2146 break;
2147 default:
2148 break;
2149 }
2150
2151 done:
2152 return NOTIFY_DONE;
2153 }
2154
2155 static struct notifier_block netxen_netdev_cb = {
2156 .notifier_call = netxen_netdev_event,
2157 };
2158
2159 static struct notifier_block netxen_inetaddr_cb = {
2160 .notifier_call = netxen_inetaddr_event,
2161 };
2162 #endif
2163
2164 static struct pci_driver netxen_driver = {
2165 .name = netxen_nic_driver_name,
2166 .id_table = netxen_pci_tbl,
2167 .probe = netxen_nic_probe,
2168 .remove = __devexit_p(netxen_nic_remove),
2169 #ifdef CONFIG_PM
2170 .suspend = netxen_nic_suspend,
2171 .resume = netxen_nic_resume,
2172 #endif
2173 .shutdown = netxen_nic_shutdown
2174 };
2175
2176 static int __init netxen_init_module(void)
2177 {
2178 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
2179
2180 #ifdef CONFIG_INET
2181 register_netdevice_notifier(&netxen_netdev_cb);
2182 register_inetaddr_notifier(&netxen_inetaddr_cb);
2183 #endif
2184
2185 return pci_register_driver(&netxen_driver);
2186 }
2187
2188 module_init(netxen_init_module);
2189
2190 static void __exit netxen_exit_module(void)
2191 {
2192 pci_unregister_driver(&netxen_driver);
2193
2194 #ifdef CONFIG_INET
2195 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
2196 unregister_netdevice_notifier(&netxen_netdev_cb);
2197 #endif
2198 }
2199
2200 module_exit(netxen_exit_module);
Linux kernel - Deliverables
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