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Merge tag 'hwspinlock-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad...
[deliverable/linux.git] / drivers / net / ethernet / qlogic / netxen / netxen_nic_main.c
1 /*
2 * Copyright (C) 2003 - 2009 NetXen, Inc.
3 * Copyright (C) 2009 - QLogic Corporation.
4 * All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 *
19 * The full GNU General Public License is included in this distribution
20 * in the file called "COPYING".
21 *
22 */
23
24 #include <linux/slab.h>
25 #include <linux/vmalloc.h>
26 #include <linux/interrupt.h>
27 #include "netxen_nic_hw.h"
28
29 #include "netxen_nic.h"
30
31 #include <linux/dma-mapping.h>
32 #include <linux/if_vlan.h>
33 #include <net/ip.h>
34 #include <linux/ipv6.h>
35 #include <linux/inetdevice.h>
36 #include <linux/sysfs.h>
37 #include <linux/aer.h>
38
39 MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Intelligent Ethernet Driver");
40 MODULE_LICENSE("GPL");
41 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
42 MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
43
44 char netxen_nic_driver_name[] = "netxen_nic";
45 static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
46 NETXEN_NIC_LINUX_VERSIONID;
47
48 static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
49
50 /* Default to restricted 1G auto-neg mode */
51 static int wol_port_mode = 5;
52
53 static int use_msi = 1;
54
55 static int use_msi_x = 1;
56
57 static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
58 module_param(auto_fw_reset, int, 0644);
59 MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
60
61 static int netxen_nic_probe(struct pci_dev *pdev,
62 const struct pci_device_id *ent);
63 static void 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 netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
67 struct net_device *);
68 static void netxen_tx_timeout(struct net_device *netdev);
69 static void netxen_tx_timeout_task(struct work_struct *work);
70 static void netxen_fw_poll_work(struct work_struct *work);
71 static void netxen_schedule_work(struct netxen_adapter *adapter,
72 work_func_t func, int delay);
73 static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
74 static int netxen_nic_poll(struct napi_struct *napi, int budget);
75 #ifdef CONFIG_NET_POLL_CONTROLLER
76 static void netxen_nic_poll_controller(struct net_device *netdev);
77 #endif
78
79 static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
80 static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
81 static void netxen_create_diag_entries(struct netxen_adapter *adapter);
82 static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
83 static int nx_dev_request_aer(struct netxen_adapter *adapter);
84 static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
85 static int netxen_can_start_firmware(struct netxen_adapter *adapter);
86
87 static irqreturn_t netxen_intr(int irq, void *data);
88 static irqreturn_t netxen_msi_intr(int irq, void *data);
89 static irqreturn_t netxen_msix_intr(int irq, void *data);
90
91 static void netxen_free_ip_list(struct netxen_adapter *, bool);
92 static void netxen_restore_indev_addr(struct net_device *dev, unsigned long);
93 static struct rtnl_link_stats64 *netxen_nic_get_stats(struct net_device *dev,
94 struct rtnl_link_stats64 *stats);
95 static int netxen_nic_set_mac(struct net_device *netdev, void *p);
96
97 /* PCI Device ID Table */
98 #define ENTRY(device) \
99 {PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
100 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
101
102 static const struct pci_device_id netxen_pci_tbl[] = {
103 ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
104 ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
105 ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
106 ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
107 ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
108 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
109 ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
110 ENTRY(PCI_DEVICE_ID_NX3031),
111 {0,}
112 };
113
114 MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
115
116 static uint32_t crb_cmd_producer[4] = {
117 CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
118 CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
119 };
120
121 void
122 netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
123 struct nx_host_tx_ring *tx_ring)
124 {
125 NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
126 }
127
128 static uint32_t crb_cmd_consumer[4] = {
129 CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
130 CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
131 };
132
133 static inline void
134 netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
135 struct nx_host_tx_ring *tx_ring)
136 {
137 NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
138 }
139
140 static uint32_t msi_tgt_status[8] = {
141 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
142 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
143 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
144 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
145 };
146
147 static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
148
149 static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
150 {
151 struct netxen_adapter *adapter = sds_ring->adapter;
152
153 NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
154 }
155
156 static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
157 {
158 struct netxen_adapter *adapter = sds_ring->adapter;
159
160 NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
161
162 if (!NETXEN_IS_MSI_FAMILY(adapter))
163 NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
164 }
165
166 static int
167 netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
168 {
169 int size = sizeof(struct nx_host_sds_ring) * count;
170
171 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
172
173 return recv_ctx->sds_rings == NULL;
174 }
175
176 static void
177 netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
178 {
179 kfree(recv_ctx->sds_rings);
180 recv_ctx->sds_rings = NULL;
181 }
182
183 static int
184 netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
185 {
186 int ring;
187 struct nx_host_sds_ring *sds_ring;
188 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
189
190 if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
191 return -ENOMEM;
192
193 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
194 sds_ring = &recv_ctx->sds_rings[ring];
195 netif_napi_add(netdev, &sds_ring->napi,
196 netxen_nic_poll, NAPI_POLL_WEIGHT);
197 }
198
199 return 0;
200 }
201
202 static void
203 netxen_napi_del(struct netxen_adapter *adapter)
204 {
205 int ring;
206 struct nx_host_sds_ring *sds_ring;
207 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
208
209 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
210 sds_ring = &recv_ctx->sds_rings[ring];
211 netif_napi_del(&sds_ring->napi);
212 }
213
214 netxen_free_sds_rings(&adapter->recv_ctx);
215 }
216
217 static void
218 netxen_napi_enable(struct netxen_adapter *adapter)
219 {
220 int ring;
221 struct nx_host_sds_ring *sds_ring;
222 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
223
224 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
225 sds_ring = &recv_ctx->sds_rings[ring];
226 napi_enable(&sds_ring->napi);
227 netxen_nic_enable_int(sds_ring);
228 }
229 }
230
231 static void
232 netxen_napi_disable(struct netxen_adapter *adapter)
233 {
234 int ring;
235 struct nx_host_sds_ring *sds_ring;
236 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
237
238 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
239 sds_ring = &recv_ctx->sds_rings[ring];
240 netxen_nic_disable_int(sds_ring);
241 napi_synchronize(&sds_ring->napi);
242 napi_disable(&sds_ring->napi);
243 }
244 }
245
246 static int nx_set_dma_mask(struct netxen_adapter *adapter)
247 {
248 struct pci_dev *pdev = adapter->pdev;
249 uint64_t mask, cmask;
250
251 adapter->pci_using_dac = 0;
252
253 mask = DMA_BIT_MASK(32);
254 cmask = DMA_BIT_MASK(32);
255
256 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
257 #ifndef CONFIG_IA64
258 mask = DMA_BIT_MASK(35);
259 #endif
260 } else {
261 mask = DMA_BIT_MASK(39);
262 cmask = mask;
263 }
264
265 if (pci_set_dma_mask(pdev, mask) == 0 &&
266 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
267 adapter->pci_using_dac = 1;
268 return 0;
269 }
270
271 return -EIO;
272 }
273
274 /* Update addressable range if firmware supports it */
275 static int
276 nx_update_dma_mask(struct netxen_adapter *adapter)
277 {
278 int change, shift, err;
279 uint64_t mask, old_mask, old_cmask;
280 struct pci_dev *pdev = adapter->pdev;
281
282 change = 0;
283
284 shift = NXRD32(adapter, CRB_DMA_SHIFT);
285 if (shift > 32)
286 return 0;
287
288 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
289 change = 1;
290 else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
291 change = 1;
292
293 if (change) {
294 old_mask = pdev->dma_mask;
295 old_cmask = pdev->dev.coherent_dma_mask;
296
297 mask = DMA_BIT_MASK(32+shift);
298
299 err = pci_set_dma_mask(pdev, mask);
300 if (err)
301 goto err_out;
302
303 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
304
305 err = pci_set_consistent_dma_mask(pdev, mask);
306 if (err)
307 goto err_out;
308 }
309 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
310 }
311
312 return 0;
313
314 err_out:
315 pci_set_dma_mask(pdev, old_mask);
316 pci_set_consistent_dma_mask(pdev, old_cmask);
317 return err;
318 }
319
320 static int
321 netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
322 {
323 u32 val, timeout;
324
325 if (first_boot == 0x55555555) {
326 /* This is the first boot after power up */
327 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
328
329 if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
330 return 0;
331
332 /* PCI bus master workaround */
333 first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
334 if (!(first_boot & 0x4)) {
335 first_boot |= 0x4;
336 NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
337 NXRD32(adapter, NETXEN_PCIE_REG(0x4));
338 }
339
340 /* This is the first boot after power up */
341 first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
342 if (first_boot != 0x80000f) {
343 /* clear the register for future unloads/loads */
344 NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
345 return -EIO;
346 }
347
348 /* Start P2 boot loader */
349 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
350 NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
351 timeout = 0;
352 do {
353 msleep(1);
354 val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
355
356 if (++timeout > 5000)
357 return -EIO;
358
359 } while (val == NETXEN_BDINFO_MAGIC);
360 }
361 return 0;
362 }
363
364 static void netxen_set_port_mode(struct netxen_adapter *adapter)
365 {
366 u32 val, data;
367
368 val = adapter->ahw.board_type;
369 if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
370 (val == NETXEN_BRDTYPE_P3_XG_LOM)) {
371 if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
372 data = NETXEN_PORT_MODE_802_3_AP;
373 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
374 } else if (port_mode == NETXEN_PORT_MODE_XG) {
375 data = NETXEN_PORT_MODE_XG;
376 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
377 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
378 data = NETXEN_PORT_MODE_AUTO_NEG_1G;
379 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
380 } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
381 data = NETXEN_PORT_MODE_AUTO_NEG_XG;
382 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
383 } else {
384 data = NETXEN_PORT_MODE_AUTO_NEG;
385 NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
386 }
387
388 if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
389 (wol_port_mode != NETXEN_PORT_MODE_XG) &&
390 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
391 (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
392 wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
393 }
394 NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
395 }
396 }
397
398 #define PCI_CAP_ID_GEN 0x10
399
400 static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
401 {
402 u32 pdevfuncsave;
403 u32 c8c9value = 0;
404 u32 chicken = 0;
405 u32 control = 0;
406 int i, pos;
407 struct pci_dev *pdev;
408
409 pdev = adapter->pdev;
410
411 chicken = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3));
412 /* clear chicken3.25:24 */
413 chicken &= 0xFCFFFFFF;
414 /*
415 * if gen1 and B0, set F1020 - if gen 2, do nothing
416 * if gen2 set to F1000
417 */
418 pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
419 if (pos == 0xC0) {
420 pci_read_config_dword(pdev, pos + 0x10, &control);
421 if ((control & 0x000F0000) != 0x00020000) {
422 /* set chicken3.24 if gen1 */
423 chicken |= 0x01000000;
424 }
425 dev_info(&adapter->pdev->dev, "Gen2 strapping detected\n");
426 c8c9value = 0xF1000;
427 } else {
428 /* set chicken3.24 if gen1 */
429 chicken |= 0x01000000;
430 dev_info(&adapter->pdev->dev, "Gen1 strapping detected\n");
431 if (adapter->ahw.revision_id == NX_P3_B0)
432 c8c9value = 0xF1020;
433 else
434 c8c9value = 0;
435 }
436
437 NXWR32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3), chicken);
438
439 if (!c8c9value)
440 return;
441
442 pdevfuncsave = pdev->devfn;
443 if (pdevfuncsave & 0x07)
444 return;
445
446 for (i = 0; i < 8; i++) {
447 pci_read_config_dword(pdev, pos + 8, &control);
448 pci_read_config_dword(pdev, pos + 8, &control);
449 pci_write_config_dword(pdev, pos + 8, c8c9value);
450 pdev->devfn++;
451 }
452 pdev->devfn = pdevfuncsave;
453 }
454
455 static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
456 {
457 u32 control;
458
459 if (pdev->msix_cap) {
460 pci_read_config_dword(pdev, pdev->msix_cap, &control);
461 if (enable)
462 control |= PCI_MSIX_FLAGS_ENABLE;
463 else
464 control = 0;
465 pci_write_config_dword(pdev, pdev->msix_cap, control);
466 }
467 }
468
469 static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
470 {
471 int i;
472
473 for (i = 0; i < count; i++)
474 adapter->msix_entries[i].entry = i;
475 }
476
477 static int
478 netxen_read_mac_addr(struct netxen_adapter *adapter)
479 {
480 int i;
481 unsigned char *p;
482 u64 mac_addr;
483 struct net_device *netdev = adapter->netdev;
484 struct pci_dev *pdev = adapter->pdev;
485
486 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
487 if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
488 return -EIO;
489 } else {
490 if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
491 return -EIO;
492 }
493
494 p = (unsigned char *)&mac_addr;
495 for (i = 0; i < 6; i++)
496 netdev->dev_addr[i] = *(p + 5 - i);
497
498 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
499
500 /* set station address */
501
502 if (!is_valid_ether_addr(netdev->dev_addr))
503 dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
504
505 return 0;
506 }
507
508 static int netxen_nic_set_mac(struct net_device *netdev, void *p)
509 {
510 struct netxen_adapter *adapter = netdev_priv(netdev);
511 struct sockaddr *addr = p;
512
513 if (!is_valid_ether_addr(addr->sa_data))
514 return -EADDRNOTAVAIL;
515
516 if (netif_running(netdev)) {
517 netif_device_detach(netdev);
518 netxen_napi_disable(adapter);
519 }
520
521 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
522 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
523 adapter->macaddr_set(adapter, addr->sa_data);
524
525 if (netif_running(netdev)) {
526 netif_device_attach(netdev);
527 netxen_napi_enable(adapter);
528 }
529 return 0;
530 }
531
532 static void netxen_set_multicast_list(struct net_device *dev)
533 {
534 struct netxen_adapter *adapter = netdev_priv(dev);
535
536 adapter->set_multi(dev);
537 }
538
539 static netdev_features_t netxen_fix_features(struct net_device *dev,
540 netdev_features_t features)
541 {
542 if (!(features & NETIF_F_RXCSUM)) {
543 netdev_info(dev, "disabling LRO as RXCSUM is off\n");
544
545 features &= ~NETIF_F_LRO;
546 }
547
548 return features;
549 }
550
551 static int netxen_set_features(struct net_device *dev,
552 netdev_features_t features)
553 {
554 struct netxen_adapter *adapter = netdev_priv(dev);
555 int hw_lro;
556
557 if (!((dev->features ^ features) & NETIF_F_LRO))
558 return 0;
559
560 hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED
561 : NETXEN_NIC_LRO_DISABLED;
562
563 if (netxen_config_hw_lro(adapter, hw_lro))
564 return -EIO;
565
566 if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter))
567 return -EIO;
568
569 return 0;
570 }
571
572 static const struct net_device_ops netxen_netdev_ops = {
573 .ndo_open = netxen_nic_open,
574 .ndo_stop = netxen_nic_close,
575 .ndo_start_xmit = netxen_nic_xmit_frame,
576 .ndo_get_stats64 = netxen_nic_get_stats,
577 .ndo_validate_addr = eth_validate_addr,
578 .ndo_set_rx_mode = netxen_set_multicast_list,
579 .ndo_set_mac_address = netxen_nic_set_mac,
580 .ndo_change_mtu = netxen_nic_change_mtu,
581 .ndo_tx_timeout = netxen_tx_timeout,
582 .ndo_fix_features = netxen_fix_features,
583 .ndo_set_features = netxen_set_features,
584 #ifdef CONFIG_NET_POLL_CONTROLLER
585 .ndo_poll_controller = netxen_nic_poll_controller,
586 #endif
587 };
588
589 static inline bool netxen_function_zero(struct pci_dev *pdev)
590 {
591 return (PCI_FUNC(pdev->devfn) == 0) ? true : false;
592 }
593
594 static inline void netxen_set_interrupt_mode(struct netxen_adapter *adapter,
595 u32 mode)
596 {
597 NXWR32(adapter, NETXEN_INTR_MODE_REG, mode);
598 }
599
600 static inline u32 netxen_get_interrupt_mode(struct netxen_adapter *adapter)
601 {
602 return NXRD32(adapter, NETXEN_INTR_MODE_REG);
603 }
604
605 static void
606 netxen_initialize_interrupt_registers(struct netxen_adapter *adapter)
607 {
608 struct netxen_legacy_intr_set *legacy_intrp;
609 u32 tgt_status_reg, int_state_reg;
610
611 if (adapter->ahw.revision_id >= NX_P3_B0)
612 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
613 else
614 legacy_intrp = &legacy_intr[0];
615
616 tgt_status_reg = legacy_intrp->tgt_status_reg;
617 int_state_reg = ISR_INT_STATE_REG;
618
619 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
620 adapter->tgt_status_reg = netxen_get_ioaddr(adapter, tgt_status_reg);
621 adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
622 legacy_intrp->tgt_mask_reg);
623 adapter->pci_int_reg = netxen_get_ioaddr(adapter,
624 legacy_intrp->pci_int_reg);
625 adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
626
627 if (adapter->ahw.revision_id >= NX_P3_B1)
628 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
629 int_state_reg);
630 else
631 adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
632 CRB_INT_VECTOR);
633 }
634
635 static int netxen_setup_msi_interrupts(struct netxen_adapter *adapter,
636 int num_msix)
637 {
638 struct pci_dev *pdev = adapter->pdev;
639 u32 value;
640 int err;
641
642 if (adapter->msix_supported) {
643 netxen_init_msix_entries(adapter, num_msix);
644 err = pci_enable_msix_range(pdev, adapter->msix_entries,
645 num_msix, num_msix);
646 if (err > 0) {
647 adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
648 netxen_set_msix_bit(pdev, 1);
649
650 if (adapter->rss_supported)
651 adapter->max_sds_rings = num_msix;
652
653 dev_info(&pdev->dev, "using msi-x interrupts\n");
654 return 0;
655 }
656 /* fall through for msi */
657 }
658
659 if (use_msi && !pci_enable_msi(pdev)) {
660 value = msi_tgt_status[adapter->ahw.pci_func];
661 adapter->flags |= NETXEN_NIC_MSI_ENABLED;
662 adapter->tgt_status_reg = netxen_get_ioaddr(adapter, value);
663 adapter->msix_entries[0].vector = pdev->irq;
664 dev_info(&pdev->dev, "using msi interrupts\n");
665 return 0;
666 }
667
668 dev_err(&pdev->dev, "Failed to acquire MSI-X/MSI interrupt vector\n");
669 return -EIO;
670 }
671
672 static int netxen_setup_intr(struct netxen_adapter *adapter)
673 {
674 struct pci_dev *pdev = adapter->pdev;
675 int num_msix;
676
677 if (adapter->rss_supported)
678 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
679 MSIX_ENTRIES_PER_ADAPTER : 2;
680 else
681 num_msix = 1;
682
683 adapter->max_sds_rings = 1;
684 adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
685
686 netxen_initialize_interrupt_registers(adapter);
687 netxen_set_msix_bit(pdev, 0);
688
689 if (netxen_function_zero(pdev)) {
690 if (!netxen_setup_msi_interrupts(adapter, num_msix))
691 netxen_set_interrupt_mode(adapter, NETXEN_MSI_MODE);
692 else
693 netxen_set_interrupt_mode(adapter, NETXEN_INTX_MODE);
694 } else {
695 if (netxen_get_interrupt_mode(adapter) == NETXEN_MSI_MODE &&
696 netxen_setup_msi_interrupts(adapter, num_msix)) {
697 dev_err(&pdev->dev, "Co-existence of MSI-X/MSI and INTx interrupts is not supported\n");
698 return -EIO;
699 }
700 }
701
702 if (!NETXEN_IS_MSI_FAMILY(adapter)) {
703 adapter->msix_entries[0].vector = pdev->irq;
704 dev_info(&pdev->dev, "using legacy interrupts\n");
705 }
706 return 0;
707 }
708
709 static void
710 netxen_teardown_intr(struct netxen_adapter *adapter)
711 {
712 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
713 pci_disable_msix(adapter->pdev);
714 if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
715 pci_disable_msi(adapter->pdev);
716 }
717
718 static void
719 netxen_cleanup_pci_map(struct netxen_adapter *adapter)
720 {
721 if (adapter->ahw.db_base != NULL)
722 iounmap(adapter->ahw.db_base);
723 if (adapter->ahw.pci_base0 != NULL)
724 iounmap(adapter->ahw.pci_base0);
725 if (adapter->ahw.pci_base1 != NULL)
726 iounmap(adapter->ahw.pci_base1);
727 if (adapter->ahw.pci_base2 != NULL)
728 iounmap(adapter->ahw.pci_base2);
729 }
730
731 static int
732 netxen_setup_pci_map(struct netxen_adapter *adapter)
733 {
734 void __iomem *db_ptr = NULL;
735
736 resource_size_t mem_base, db_base;
737 unsigned long mem_len, db_len = 0;
738
739 struct pci_dev *pdev = adapter->pdev;
740 int pci_func = adapter->ahw.pci_func;
741 struct netxen_hardware_context *ahw = &adapter->ahw;
742
743 int err = 0;
744
745 /*
746 * Set the CRB window to invalid. If any register in window 0 is
747 * accessed it should set the window to 0 and then reset it to 1.
748 */
749 adapter->ahw.crb_win = -1;
750 adapter->ahw.ocm_win = -1;
751
752 /* remap phys address */
753 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
754 mem_len = pci_resource_len(pdev, 0);
755
756 /* 128 Meg of memory */
757 if (mem_len == NETXEN_PCI_128MB_SIZE) {
758
759 ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
760 ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
761 SECOND_PAGE_GROUP_SIZE);
762 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
763 THIRD_PAGE_GROUP_SIZE);
764 if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
765 ahw->pci_base2 == NULL) {
766 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
767 err = -EIO;
768 goto err_out;
769 }
770
771 ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
772
773 } else if (mem_len == NETXEN_PCI_32MB_SIZE) {
774
775 ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
776 ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
777 SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
778 if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
779 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
780 err = -EIO;
781 goto err_out;
782 }
783
784 } else if (mem_len == NETXEN_PCI_2MB_SIZE) {
785
786 ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
787 if (ahw->pci_base0 == NULL) {
788 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
789 return -EIO;
790 }
791 ahw->pci_len0 = mem_len;
792 } else {
793 return -EIO;
794 }
795
796 netxen_setup_hwops(adapter);
797
798 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
799
800 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
801 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
802 NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
803
804 } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
805 adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
806 NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
807 }
808
809 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
810 goto skip_doorbell;
811
812 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
813 db_len = pci_resource_len(pdev, 4);
814
815 if (db_len == 0) {
816 printk(KERN_ERR "%s: doorbell is disabled\n",
817 netxen_nic_driver_name);
818 err = -EIO;
819 goto err_out;
820 }
821
822 db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
823 if (!db_ptr) {
824 printk(KERN_ERR "%s: Failed to allocate doorbell map.",
825 netxen_nic_driver_name);
826 err = -EIO;
827 goto err_out;
828 }
829
830 skip_doorbell:
831 adapter->ahw.db_base = db_ptr;
832 adapter->ahw.db_len = db_len;
833 return 0;
834
835 err_out:
836 netxen_cleanup_pci_map(adapter);
837 return err;
838 }
839
840 static void
841 netxen_check_options(struct netxen_adapter *adapter)
842 {
843 u32 fw_major, fw_minor, fw_build, prev_fw_version;
844 char brd_name[NETXEN_MAX_SHORT_NAME];
845 char serial_num[32];
846 int i, offset, val, err;
847 __le32 *ptr32;
848 struct pci_dev *pdev = adapter->pdev;
849
850 adapter->driver_mismatch = 0;
851
852 ptr32 = (__le32 *)&serial_num;
853 offset = NX_FW_SERIAL_NUM_OFFSET;
854 for (i = 0; i < 8; i++) {
855 if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
856 dev_err(&pdev->dev, "error reading board info\n");
857 adapter->driver_mismatch = 1;
858 return;
859 }
860 ptr32[i] = cpu_to_le32(val);
861 offset += sizeof(u32);
862 }
863
864 fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
865 fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
866 fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
867 prev_fw_version = adapter->fw_version;
868 adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
869
870 /* Get FW Mini Coredump template and store it */
871 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
872 if (adapter->mdump.md_template == NULL ||
873 adapter->fw_version > prev_fw_version) {
874 kfree(adapter->mdump.md_template);
875 adapter->mdump.md_template = NULL;
876 err = netxen_setup_minidump(adapter);
877 if (err)
878 dev_err(&adapter->pdev->dev,
879 "Failed to setup minidump rcode = %d\n", err);
880 }
881 }
882
883 if (adapter->portnum == 0) {
884 if (netxen_nic_get_brd_name_by_type(adapter->ahw.board_type,
885 brd_name))
886 strcpy(serial_num, "Unknown");
887
888 pr_info("%s: %s Board S/N %s Chip rev 0x%x\n",
889 module_name(THIS_MODULE),
890 brd_name, serial_num, adapter->ahw.revision_id);
891 }
892
893 if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
894 adapter->driver_mismatch = 1;
895 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
896 fw_major, fw_minor, fw_build);
897 return;
898 }
899
900 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
901 i = NXRD32(adapter, NETXEN_SRE_MISC);
902 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
903 }
904
905 dev_info(&pdev->dev, "Driver v%s, firmware v%d.%d.%d [%s]\n",
906 NETXEN_NIC_LINUX_VERSIONID, fw_major, fw_minor, fw_build,
907 adapter->ahw.cut_through ? "cut-through" : "legacy");
908
909 if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
910 adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
911
912 if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
913 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
914 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
915 } else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
916 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
917 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
918 }
919
920 adapter->msix_supported = 0;
921 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
922 adapter->msix_supported = !!use_msi_x;
923 adapter->rss_supported = !!use_msi_x;
924 } else {
925 u32 flashed_ver = 0;
926 netxen_rom_fast_read(adapter,
927 NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
928 flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
929
930 if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
931 switch (adapter->ahw.board_type) {
932 case NETXEN_BRDTYPE_P2_SB31_10G:
933 case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
934 adapter->msix_supported = !!use_msi_x;
935 adapter->rss_supported = !!use_msi_x;
936 break;
937 default:
938 break;
939 }
940 }
941 }
942
943 adapter->num_txd = MAX_CMD_DESCRIPTORS;
944
945 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
946 adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
947 adapter->max_rds_rings = 3;
948 } else {
949 adapter->num_lro_rxd = 0;
950 adapter->max_rds_rings = 2;
951 }
952 }
953
954 static int
955 netxen_start_firmware(struct netxen_adapter *adapter)
956 {
957 int val, err, first_boot;
958 struct pci_dev *pdev = adapter->pdev;
959
960 /* required for NX2031 dummy dma */
961 err = nx_set_dma_mask(adapter);
962 if (err)
963 return err;
964
965 err = netxen_can_start_firmware(adapter);
966
967 if (err < 0)
968 return err;
969
970 if (!err)
971 goto wait_init;
972
973 first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
974
975 err = netxen_check_hw_init(adapter, first_boot);
976 if (err) {
977 dev_err(&pdev->dev, "error in init HW init sequence\n");
978 return err;
979 }
980
981 netxen_request_firmware(adapter);
982
983 err = netxen_need_fw_reset(adapter);
984 if (err < 0)
985 goto err_out;
986 if (err == 0)
987 goto pcie_strap_init;
988
989 if (first_boot != 0x55555555) {
990 NXWR32(adapter, CRB_CMDPEG_STATE, 0);
991 netxen_pinit_from_rom(adapter);
992 msleep(1);
993 }
994
995 NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
996 NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
997 NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
998
999 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1000 netxen_set_port_mode(adapter);
1001
1002 err = netxen_load_firmware(adapter);
1003 if (err)
1004 goto err_out;
1005
1006 netxen_release_firmware(adapter);
1007
1008 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1009
1010 /* Initialize multicast addr pool owners */
1011 val = 0x7654;
1012 if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
1013 val |= 0x0f000000;
1014 NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
1015
1016 }
1017
1018 err = netxen_init_dummy_dma(adapter);
1019 if (err)
1020 goto err_out;
1021
1022 /*
1023 * Tell the hardware our version number.
1024 */
1025 val = (_NETXEN_NIC_LINUX_MAJOR << 16)
1026 | ((_NETXEN_NIC_LINUX_MINOR << 8))
1027 | (_NETXEN_NIC_LINUX_SUBVERSION);
1028 NXWR32(adapter, CRB_DRIVER_VERSION, val);
1029
1030 pcie_strap_init:
1031 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1032 netxen_pcie_strap_init(adapter);
1033
1034 wait_init:
1035 /* Handshake with the card before we register the devices. */
1036 err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
1037 if (err) {
1038 netxen_free_dummy_dma(adapter);
1039 goto err_out;
1040 }
1041
1042 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
1043
1044 nx_update_dma_mask(adapter);
1045
1046 netxen_check_options(adapter);
1047
1048 adapter->need_fw_reset = 0;
1049
1050 /* fall through and release firmware */
1051
1052 err_out:
1053 netxen_release_firmware(adapter);
1054 return err;
1055 }
1056
1057 static int
1058 netxen_nic_request_irq(struct netxen_adapter *adapter)
1059 {
1060 irq_handler_t handler;
1061 struct nx_host_sds_ring *sds_ring;
1062 int err, ring;
1063
1064 unsigned long flags = 0;
1065 struct net_device *netdev = adapter->netdev;
1066 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1067
1068 if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1069 handler = netxen_msix_intr;
1070 else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1071 handler = netxen_msi_intr;
1072 else {
1073 flags |= IRQF_SHARED;
1074 handler = netxen_intr;
1075 }
1076 adapter->irq = netdev->irq;
1077
1078 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1079 sds_ring = &recv_ctx->sds_rings[ring];
1080 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
1081 err = request_irq(sds_ring->irq, handler,
1082 flags, sds_ring->name, sds_ring);
1083 if (err)
1084 return err;
1085 }
1086
1087 return 0;
1088 }
1089
1090 static void
1091 netxen_nic_free_irq(struct netxen_adapter *adapter)
1092 {
1093 int ring;
1094 struct nx_host_sds_ring *sds_ring;
1095
1096 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1097
1098 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1099 sds_ring = &recv_ctx->sds_rings[ring];
1100 free_irq(sds_ring->irq, sds_ring);
1101 }
1102 }
1103
1104 static void
1105 netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
1106 {
1107 adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
1108 adapter->coal.normal.data.rx_time_us =
1109 NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
1110 adapter->coal.normal.data.rx_packets =
1111 NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
1112 adapter->coal.normal.data.tx_time_us =
1113 NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
1114 adapter->coal.normal.data.tx_packets =
1115 NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
1116 }
1117
1118 /* with rtnl_lock */
1119 static int
1120 __netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1121 {
1122 int err;
1123
1124 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1125 return -EIO;
1126
1127 err = adapter->init_port(adapter, adapter->physical_port);
1128 if (err) {
1129 printk(KERN_ERR "%s: Failed to initialize port %d\n",
1130 netxen_nic_driver_name, adapter->portnum);
1131 return err;
1132 }
1133 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1134 adapter->macaddr_set(adapter, adapter->mac_addr);
1135
1136 adapter->set_multi(netdev);
1137 adapter->set_mtu(adapter, netdev->mtu);
1138
1139 adapter->ahw.linkup = 0;
1140
1141 if (adapter->max_sds_rings > 1)
1142 netxen_config_rss(adapter, 1);
1143
1144 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1145 netxen_config_intr_coalesce(adapter);
1146
1147 if (netdev->features & NETIF_F_LRO)
1148 netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
1149
1150 netxen_napi_enable(adapter);
1151
1152 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1153 netxen_linkevent_request(adapter, 1);
1154 else
1155 netxen_nic_set_link_parameters(adapter);
1156
1157 set_bit(__NX_DEV_UP, &adapter->state);
1158 return 0;
1159 }
1160
1161 /* Usage: During resume and firmware recovery module.*/
1162
1163 static inline int
1164 netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1165 {
1166 int err = 0;
1167
1168 rtnl_lock();
1169 if (netif_running(netdev))
1170 err = __netxen_nic_up(adapter, netdev);
1171 rtnl_unlock();
1172
1173 return err;
1174 }
1175
1176 /* with rtnl_lock */
1177 static void
1178 __netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1179 {
1180 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1181 return;
1182
1183 if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1184 return;
1185
1186 smp_mb();
1187 netif_carrier_off(netdev);
1188 netif_tx_disable(netdev);
1189
1190 if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1191 netxen_linkevent_request(adapter, 0);
1192
1193 if (adapter->stop_port)
1194 adapter->stop_port(adapter);
1195
1196 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1197 netxen_p3_free_mac_list(adapter);
1198
1199 adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1200
1201 netxen_napi_disable(adapter);
1202
1203 netxen_release_tx_buffers(adapter);
1204 }
1205
1206 /* Usage: During suspend and firmware recovery module */
1207
1208 static inline void
1209 netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1210 {
1211 rtnl_lock();
1212 if (netif_running(netdev))
1213 __netxen_nic_down(adapter, netdev);
1214 rtnl_unlock();
1215
1216 }
1217
1218 static int
1219 netxen_nic_attach(struct netxen_adapter *adapter)
1220 {
1221 struct net_device *netdev = adapter->netdev;
1222 struct pci_dev *pdev = adapter->pdev;
1223 int err, ring;
1224 struct nx_host_rds_ring *rds_ring;
1225 struct nx_host_tx_ring *tx_ring;
1226 u32 capab2;
1227
1228 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1229 return 0;
1230
1231 err = netxen_init_firmware(adapter);
1232 if (err)
1233 return err;
1234
1235 adapter->flags &= ~NETXEN_FW_MSS_CAP;
1236 if (adapter->capabilities & NX_FW_CAPABILITY_MORE_CAPS) {
1237 capab2 = NXRD32(adapter, CRB_FW_CAPABILITIES_2);
1238 if (capab2 & NX_FW_CAPABILITY_2_LRO_MAX_TCP_SEG)
1239 adapter->flags |= NETXEN_FW_MSS_CAP;
1240 }
1241
1242 err = netxen_napi_add(adapter, netdev);
1243 if (err)
1244 return err;
1245
1246 err = netxen_alloc_sw_resources(adapter);
1247 if (err) {
1248 printk(KERN_ERR "%s: Error in setting sw resources\n",
1249 netdev->name);
1250 return err;
1251 }
1252
1253 err = netxen_alloc_hw_resources(adapter);
1254 if (err) {
1255 printk(KERN_ERR "%s: Error in setting hw resources\n",
1256 netdev->name);
1257 goto err_out_free_sw;
1258 }
1259
1260 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1261 tx_ring = adapter->tx_ring;
1262 tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1263 crb_cmd_producer[adapter->portnum]);
1264 tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1265 crb_cmd_consumer[adapter->portnum]);
1266
1267 tx_ring->producer = 0;
1268 tx_ring->sw_consumer = 0;
1269
1270 netxen_nic_update_cmd_producer(adapter, tx_ring);
1271 netxen_nic_update_cmd_consumer(adapter, tx_ring);
1272 }
1273
1274 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1275 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1276 netxen_post_rx_buffers(adapter, ring, rds_ring);
1277 }
1278
1279 err = netxen_nic_request_irq(adapter);
1280 if (err) {
1281 dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1282 netdev->name);
1283 goto err_out_free_rxbuf;
1284 }
1285
1286 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1287 netxen_nic_init_coalesce_defaults(adapter);
1288
1289 netxen_create_sysfs_entries(adapter);
1290
1291 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1292 return 0;
1293
1294 err_out_free_rxbuf:
1295 netxen_release_rx_buffers(adapter);
1296 netxen_free_hw_resources(adapter);
1297 err_out_free_sw:
1298 netxen_free_sw_resources(adapter);
1299 return err;
1300 }
1301
1302 static void
1303 netxen_nic_detach(struct netxen_adapter *adapter)
1304 {
1305 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1306 return;
1307
1308 netxen_remove_sysfs_entries(adapter);
1309
1310 netxen_free_hw_resources(adapter);
1311 netxen_release_rx_buffers(adapter);
1312 netxen_nic_free_irq(adapter);
1313 netxen_napi_del(adapter);
1314 netxen_free_sw_resources(adapter);
1315
1316 adapter->is_up = 0;
1317 }
1318
1319 int
1320 netxen_nic_reset_context(struct netxen_adapter *adapter)
1321 {
1322 int err = 0;
1323 struct net_device *netdev = adapter->netdev;
1324
1325 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1326 return -EBUSY;
1327
1328 if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1329
1330 netif_device_detach(netdev);
1331
1332 if (netif_running(netdev))
1333 __netxen_nic_down(adapter, netdev);
1334
1335 netxen_nic_detach(adapter);
1336
1337 if (netif_running(netdev)) {
1338 err = netxen_nic_attach(adapter);
1339 if (!err)
1340 err = __netxen_nic_up(adapter, netdev);
1341
1342 if (err)
1343 goto done;
1344 }
1345
1346 netif_device_attach(netdev);
1347 }
1348
1349 done:
1350 clear_bit(__NX_RESETTING, &adapter->state);
1351 return err;
1352 }
1353
1354 static int
1355 netxen_setup_netdev(struct netxen_adapter *adapter,
1356 struct net_device *netdev)
1357 {
1358 int err = 0;
1359 struct pci_dev *pdev = adapter->pdev;
1360
1361 adapter->mc_enabled = 0;
1362 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1363 adapter->max_mc_count = 38;
1364 else
1365 adapter->max_mc_count = 16;
1366
1367 netdev->netdev_ops = &netxen_netdev_ops;
1368 netdev->watchdog_timeo = 5*HZ;
1369
1370 netxen_nic_change_mtu(netdev, netdev->mtu);
1371
1372 netdev->ethtool_ops = &netxen_nic_ethtool_ops;
1373
1374 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
1375 NETIF_F_RXCSUM;
1376
1377 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1378 netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1379
1380 netdev->vlan_features |= netdev->hw_features;
1381
1382 if (adapter->pci_using_dac) {
1383 netdev->features |= NETIF_F_HIGHDMA;
1384 netdev->vlan_features |= NETIF_F_HIGHDMA;
1385 }
1386
1387 if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1388 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
1389
1390 if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1391 netdev->hw_features |= NETIF_F_LRO;
1392
1393 netdev->features |= netdev->hw_features;
1394
1395 netdev->irq = adapter->msix_entries[0].vector;
1396
1397 INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1398
1399 if (netxen_read_mac_addr(adapter))
1400 dev_warn(&pdev->dev, "failed to read mac addr\n");
1401
1402 netif_carrier_off(netdev);
1403
1404 err = register_netdev(netdev);
1405 if (err) {
1406 dev_err(&pdev->dev, "failed to register net device\n");
1407 return err;
1408 }
1409
1410 return 0;
1411 }
1412
1413 #define NETXEN_ULA_ADAPTER_KEY (0xdaddad01)
1414 #define NETXEN_NON_ULA_ADAPTER_KEY (0xdaddad00)
1415
1416 static void netxen_read_ula_info(struct netxen_adapter *adapter)
1417 {
1418 u32 temp;
1419
1420 /* Print ULA info only once for an adapter */
1421 if (adapter->portnum != 0)
1422 return;
1423
1424 temp = NXRD32(adapter, NETXEN_ULA_KEY);
1425 switch (temp) {
1426 case NETXEN_ULA_ADAPTER_KEY:
1427 dev_info(&adapter->pdev->dev, "ULA adapter");
1428 break;
1429 case NETXEN_NON_ULA_ADAPTER_KEY:
1430 dev_info(&adapter->pdev->dev, "non ULA adapter");
1431 break;
1432 default:
1433 break;
1434 }
1435
1436 return;
1437 }
1438
1439 #ifdef CONFIG_PCIEAER
1440 static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1441 {
1442 struct pci_dev *pdev = adapter->pdev;
1443 struct pci_dev *root = pdev->bus->self;
1444 u32 aer_pos;
1445
1446 /* root bus? */
1447 if (!root)
1448 return;
1449
1450 if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1451 adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1452 return;
1453
1454 if (pci_pcie_type(root) != PCI_EXP_TYPE_ROOT_PORT)
1455 return;
1456
1457 aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1458 if (!aer_pos)
1459 return;
1460
1461 pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1462 }
1463 #endif
1464
1465 static int
1466 netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1467 {
1468 struct net_device *netdev = NULL;
1469 struct netxen_adapter *adapter = NULL;
1470 int i = 0, err;
1471 int pci_func_id = PCI_FUNC(pdev->devfn);
1472 uint8_t revision_id;
1473 u32 val;
1474
1475 if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1476 pr_warn("%s: chip revisions between 0x%x-0x%x will not be enabled\n",
1477 module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1478 return -ENODEV;
1479 }
1480
1481 if ((err = pci_enable_device(pdev)))
1482 return err;
1483
1484 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1485 err = -ENODEV;
1486 goto err_out_disable_pdev;
1487 }
1488
1489 if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1490 goto err_out_disable_pdev;
1491
1492 if (NX_IS_REVISION_P3(pdev->revision))
1493 pci_enable_pcie_error_reporting(pdev);
1494
1495 pci_set_master(pdev);
1496
1497 netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1498 if(!netdev) {
1499 err = -ENOMEM;
1500 goto err_out_free_res;
1501 }
1502
1503 SET_NETDEV_DEV(netdev, &pdev->dev);
1504
1505 adapter = netdev_priv(netdev);
1506 adapter->netdev = netdev;
1507 adapter->pdev = pdev;
1508 adapter->ahw.pci_func = pci_func_id;
1509
1510 revision_id = pdev->revision;
1511 adapter->ahw.revision_id = revision_id;
1512
1513 rwlock_init(&adapter->ahw.crb_lock);
1514 spin_lock_init(&adapter->ahw.mem_lock);
1515
1516 spin_lock_init(&adapter->tx_clean_lock);
1517 INIT_LIST_HEAD(&adapter->mac_list);
1518 INIT_LIST_HEAD(&adapter->ip_list);
1519
1520 err = netxen_setup_pci_map(adapter);
1521 if (err)
1522 goto err_out_free_netdev;
1523
1524 /* This will be reset for mezz cards */
1525 adapter->portnum = pci_func_id;
1526
1527 err = netxen_nic_get_board_info(adapter);
1528 if (err) {
1529 dev_err(&pdev->dev, "Error getting board config info.\n");
1530 goto err_out_iounmap;
1531 }
1532
1533 #ifdef CONFIG_PCIEAER
1534 netxen_mask_aer_correctable(adapter);
1535 #endif
1536
1537 /* Mezz cards have PCI function 0,2,3 enabled */
1538 switch (adapter->ahw.board_type) {
1539 case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1540 case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1541 if (pci_func_id >= 2)
1542 adapter->portnum = pci_func_id - 2;
1543 break;
1544 default:
1545 break;
1546 }
1547
1548 err = netxen_check_flash_fw_compatibility(adapter);
1549 if (err)
1550 goto err_out_iounmap;
1551
1552 if (adapter->portnum == 0) {
1553 val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1554 if (val != 0xffffffff && val != 0) {
1555 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1556 adapter->need_fw_reset = 1;
1557 }
1558 }
1559
1560 err = netxen_start_firmware(adapter);
1561 if (err)
1562 goto err_out_decr_ref;
1563
1564 /*
1565 * See if the firmware gave us a virtual-physical port mapping.
1566 */
1567 adapter->physical_port = adapter->portnum;
1568 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1569 i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1570 if (i != 0x55555555)
1571 adapter->physical_port = i;
1572 }
1573
1574 netxen_nic_clear_stats(adapter);
1575
1576 err = netxen_setup_intr(adapter);
1577
1578 if (err) {
1579 dev_err(&adapter->pdev->dev,
1580 "Failed to setup interrupts, error = %d\n", err);
1581 goto err_out_disable_msi;
1582 }
1583
1584 netxen_read_ula_info(adapter);
1585
1586 err = netxen_setup_netdev(adapter, netdev);
1587 if (err)
1588 goto err_out_disable_msi;
1589
1590 pci_set_drvdata(pdev, adapter);
1591
1592 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1593
1594 switch (adapter->ahw.port_type) {
1595 case NETXEN_NIC_GBE:
1596 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1597 adapter->netdev->name);
1598 break;
1599 case NETXEN_NIC_XGBE:
1600 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1601 adapter->netdev->name);
1602 break;
1603 }
1604
1605 netxen_create_diag_entries(adapter);
1606
1607 return 0;
1608
1609 err_out_disable_msi:
1610 netxen_teardown_intr(adapter);
1611
1612 netxen_free_dummy_dma(adapter);
1613
1614 err_out_decr_ref:
1615 nx_decr_dev_ref_cnt(adapter);
1616
1617 err_out_iounmap:
1618 netxen_cleanup_pci_map(adapter);
1619
1620 err_out_free_netdev:
1621 free_netdev(netdev);
1622
1623 err_out_free_res:
1624 pci_release_regions(pdev);
1625
1626 err_out_disable_pdev:
1627 pci_disable_device(pdev);
1628 return err;
1629 }
1630
1631 static
1632 void netxen_cleanup_minidump(struct netxen_adapter *adapter)
1633 {
1634 kfree(adapter->mdump.md_template);
1635 adapter->mdump.md_template = NULL;
1636
1637 if (adapter->mdump.md_capture_buff) {
1638 vfree(adapter->mdump.md_capture_buff);
1639 adapter->mdump.md_capture_buff = NULL;
1640 }
1641 }
1642
1643 static void netxen_nic_remove(struct pci_dev *pdev)
1644 {
1645 struct netxen_adapter *adapter;
1646 struct net_device *netdev;
1647
1648 adapter = pci_get_drvdata(pdev);
1649 if (adapter == NULL)
1650 return;
1651
1652 netdev = adapter->netdev;
1653
1654 netxen_cancel_fw_work(adapter);
1655
1656 unregister_netdev(netdev);
1657
1658 cancel_work_sync(&adapter->tx_timeout_task);
1659
1660 netxen_free_ip_list(adapter, false);
1661 netxen_nic_detach(adapter);
1662
1663 nx_decr_dev_ref_cnt(adapter);
1664
1665 if (adapter->portnum == 0)
1666 netxen_free_dummy_dma(adapter);
1667
1668 clear_bit(__NX_RESETTING, &adapter->state);
1669
1670 netxen_teardown_intr(adapter);
1671 netxen_set_interrupt_mode(adapter, 0);
1672 netxen_remove_diag_entries(adapter);
1673
1674 netxen_cleanup_pci_map(adapter);
1675
1676 netxen_release_firmware(adapter);
1677
1678 if (NX_IS_REVISION_P3(pdev->revision)) {
1679 netxen_cleanup_minidump(adapter);
1680 pci_disable_pcie_error_reporting(pdev);
1681 }
1682
1683 pci_release_regions(pdev);
1684 pci_disable_device(pdev);
1685
1686 free_netdev(netdev);
1687 }
1688
1689 static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1690 {
1691 struct net_device *netdev = adapter->netdev;
1692
1693 netif_device_detach(netdev);
1694
1695 netxen_cancel_fw_work(adapter);
1696
1697 if (netif_running(netdev))
1698 netxen_nic_down(adapter, netdev);
1699
1700 cancel_work_sync(&adapter->tx_timeout_task);
1701
1702 netxen_nic_detach(adapter);
1703
1704 if (adapter->portnum == 0)
1705 netxen_free_dummy_dma(adapter);
1706
1707 nx_decr_dev_ref_cnt(adapter);
1708
1709 clear_bit(__NX_RESETTING, &adapter->state);
1710 }
1711
1712 static int netxen_nic_attach_func(struct pci_dev *pdev)
1713 {
1714 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1715 struct net_device *netdev = adapter->netdev;
1716 int err;
1717
1718 err = pci_enable_device(pdev);
1719 if (err)
1720 return err;
1721
1722 pci_set_power_state(pdev, PCI_D0);
1723 pci_set_master(pdev);
1724 pci_restore_state(pdev);
1725
1726 adapter->ahw.crb_win = -1;
1727 adapter->ahw.ocm_win = -1;
1728
1729 err = netxen_start_firmware(adapter);
1730 if (err) {
1731 dev_err(&pdev->dev, "failed to start firmware\n");
1732 return err;
1733 }
1734
1735 if (netif_running(netdev)) {
1736 err = netxen_nic_attach(adapter);
1737 if (err)
1738 goto err_out;
1739
1740 err = netxen_nic_up(adapter, netdev);
1741 if (err)
1742 goto err_out_detach;
1743
1744 netxen_restore_indev_addr(netdev, NETDEV_UP);
1745 }
1746
1747 netif_device_attach(netdev);
1748 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1749 return 0;
1750
1751 err_out_detach:
1752 netxen_nic_detach(adapter);
1753 err_out:
1754 nx_decr_dev_ref_cnt(adapter);
1755 return err;
1756 }
1757
1758 static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1759 pci_channel_state_t state)
1760 {
1761 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1762
1763 if (state == pci_channel_io_perm_failure)
1764 return PCI_ERS_RESULT_DISCONNECT;
1765
1766 if (nx_dev_request_aer(adapter))
1767 return PCI_ERS_RESULT_RECOVERED;
1768
1769 netxen_nic_detach_func(adapter);
1770
1771 pci_disable_device(pdev);
1772
1773 return PCI_ERS_RESULT_NEED_RESET;
1774 }
1775
1776 static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1777 {
1778 int err = 0;
1779
1780 err = netxen_nic_attach_func(pdev);
1781
1782 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1783 }
1784
1785 static void netxen_io_resume(struct pci_dev *pdev)
1786 {
1787 pci_cleanup_aer_uncorrect_error_status(pdev);
1788 }
1789
1790 static void netxen_nic_shutdown(struct pci_dev *pdev)
1791 {
1792 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1793
1794 netxen_nic_detach_func(adapter);
1795
1796 if (pci_save_state(pdev))
1797 return;
1798
1799 if (netxen_nic_wol_supported(adapter)) {
1800 pci_enable_wake(pdev, PCI_D3cold, 1);
1801 pci_enable_wake(pdev, PCI_D3hot, 1);
1802 }
1803
1804 pci_disable_device(pdev);
1805 }
1806
1807 #ifdef CONFIG_PM
1808 static int
1809 netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1810 {
1811 struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1812 int retval;
1813
1814 netxen_nic_detach_func(adapter);
1815
1816 retval = pci_save_state(pdev);
1817 if (retval)
1818 return retval;
1819
1820 if (netxen_nic_wol_supported(adapter)) {
1821 pci_enable_wake(pdev, PCI_D3cold, 1);
1822 pci_enable_wake(pdev, PCI_D3hot, 1);
1823 }
1824
1825 pci_disable_device(pdev);
1826 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1827
1828 return 0;
1829 }
1830
1831 static int
1832 netxen_nic_resume(struct pci_dev *pdev)
1833 {
1834 return netxen_nic_attach_func(pdev);
1835 }
1836 #endif
1837
1838 static int netxen_nic_open(struct net_device *netdev)
1839 {
1840 struct netxen_adapter *adapter = netdev_priv(netdev);
1841 int err = 0;
1842
1843 if (adapter->driver_mismatch)
1844 return -EIO;
1845
1846 err = netxen_nic_attach(adapter);
1847 if (err)
1848 return err;
1849
1850 err = __netxen_nic_up(adapter, netdev);
1851 if (err)
1852 goto err_out;
1853
1854 netif_start_queue(netdev);
1855
1856 return 0;
1857
1858 err_out:
1859 netxen_nic_detach(adapter);
1860 return err;
1861 }
1862
1863 /*
1864 * netxen_nic_close - Disables a network interface entry point
1865 */
1866 static int netxen_nic_close(struct net_device *netdev)
1867 {
1868 struct netxen_adapter *adapter = netdev_priv(netdev);
1869
1870 __netxen_nic_down(adapter, netdev);
1871 return 0;
1872 }
1873
1874 static void
1875 netxen_tso_check(struct net_device *netdev,
1876 struct nx_host_tx_ring *tx_ring,
1877 struct cmd_desc_type0 *first_desc,
1878 struct sk_buff *skb)
1879 {
1880 u8 opcode = TX_ETHER_PKT;
1881 __be16 protocol = skb->protocol;
1882 u16 flags = 0, vid = 0;
1883 u32 producer;
1884 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1885 struct cmd_desc_type0 *hwdesc;
1886 struct vlan_ethhdr *vh;
1887
1888 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1889
1890 vh = (struct vlan_ethhdr *)skb->data;
1891 protocol = vh->h_vlan_encapsulated_proto;
1892 flags = FLAGS_VLAN_TAGGED;
1893
1894 } else if (skb_vlan_tag_present(skb)) {
1895 flags = FLAGS_VLAN_OOB;
1896 vid = skb_vlan_tag_get(skb);
1897 netxen_set_tx_vlan_tci(first_desc, vid);
1898 vlan_oob = 1;
1899 }
1900
1901 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1902 skb_shinfo(skb)->gso_size > 0) {
1903
1904 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1905
1906 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1907 first_desc->total_hdr_length = hdr_len;
1908 if (vlan_oob) {
1909 first_desc->total_hdr_length += VLAN_HLEN;
1910 first_desc->tcp_hdr_offset = VLAN_HLEN;
1911 first_desc->ip_hdr_offset = VLAN_HLEN;
1912 /* Only in case of TSO on vlan device */
1913 flags |= FLAGS_VLAN_TAGGED;
1914 }
1915
1916 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1917 TX_TCP_LSO6 : TX_TCP_LSO;
1918 tso = 1;
1919
1920 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1921 u8 l4proto;
1922
1923 if (protocol == cpu_to_be16(ETH_P_IP)) {
1924 l4proto = ip_hdr(skb)->protocol;
1925
1926 if (l4proto == IPPROTO_TCP)
1927 opcode = TX_TCP_PKT;
1928 else if(l4proto == IPPROTO_UDP)
1929 opcode = TX_UDP_PKT;
1930 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1931 l4proto = ipv6_hdr(skb)->nexthdr;
1932
1933 if (l4proto == IPPROTO_TCP)
1934 opcode = TX_TCPV6_PKT;
1935 else if(l4proto == IPPROTO_UDP)
1936 opcode = TX_UDPV6_PKT;
1937 }
1938 }
1939
1940 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1941 first_desc->ip_hdr_offset += skb_network_offset(skb);
1942 netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1943
1944 if (!tso)
1945 return;
1946
1947 /* For LSO, we need to copy the MAC/IP/TCP headers into
1948 * the descriptor ring
1949 */
1950 producer = tx_ring->producer;
1951 copied = 0;
1952 offset = 2;
1953
1954 if (vlan_oob) {
1955 /* Create a TSO vlan header template for firmware */
1956
1957 hwdesc = &tx_ring->desc_head[producer];
1958 tx_ring->cmd_buf_arr[producer].skb = NULL;
1959
1960 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1961 hdr_len + VLAN_HLEN);
1962
1963 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1964 skb_copy_from_linear_data(skb, vh, 12);
1965 vh->h_vlan_proto = htons(ETH_P_8021Q);
1966 vh->h_vlan_TCI = htons(vid);
1967 skb_copy_from_linear_data_offset(skb, 12,
1968 (char *)vh + 16, copy_len - 16);
1969
1970 copied = copy_len - VLAN_HLEN;
1971 offset = 0;
1972
1973 producer = get_next_index(producer, tx_ring->num_desc);
1974 }
1975
1976 while (copied < hdr_len) {
1977
1978 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1979 (hdr_len - copied));
1980
1981 hwdesc = &tx_ring->desc_head[producer];
1982 tx_ring->cmd_buf_arr[producer].skb = NULL;
1983
1984 skb_copy_from_linear_data_offset(skb, copied,
1985 (char *)hwdesc + offset, copy_len);
1986
1987 copied += copy_len;
1988 offset = 0;
1989
1990 producer = get_next_index(producer, tx_ring->num_desc);
1991 }
1992
1993 tx_ring->producer = producer;
1994 barrier();
1995 }
1996
1997 static int
1998 netxen_map_tx_skb(struct pci_dev *pdev,
1999 struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
2000 {
2001 struct netxen_skb_frag *nf;
2002 struct skb_frag_struct *frag;
2003 int i, nr_frags;
2004 dma_addr_t map;
2005
2006 nr_frags = skb_shinfo(skb)->nr_frags;
2007 nf = &pbuf->frag_array[0];
2008
2009 map = pci_map_single(pdev, skb->data,
2010 skb_headlen(skb), PCI_DMA_TODEVICE);
2011 if (pci_dma_mapping_error(pdev, map))
2012 goto out_err;
2013
2014 nf->dma = map;
2015 nf->length = skb_headlen(skb);
2016
2017 for (i = 0; i < nr_frags; i++) {
2018 frag = &skb_shinfo(skb)->frags[i];
2019 nf = &pbuf->frag_array[i+1];
2020
2021 map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
2022 DMA_TO_DEVICE);
2023 if (dma_mapping_error(&pdev->dev, map))
2024 goto unwind;
2025
2026 nf->dma = map;
2027 nf->length = skb_frag_size(frag);
2028 }
2029
2030 return 0;
2031
2032 unwind:
2033 while (--i >= 0) {
2034 nf = &pbuf->frag_array[i+1];
2035 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
2036 nf->dma = 0ULL;
2037 }
2038
2039 nf = &pbuf->frag_array[0];
2040 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
2041 nf->dma = 0ULL;
2042
2043 out_err:
2044 return -ENOMEM;
2045 }
2046
2047 static inline void
2048 netxen_clear_cmddesc(u64 *desc)
2049 {
2050 desc[0] = 0ULL;
2051 desc[2] = 0ULL;
2052 }
2053
2054 static netdev_tx_t
2055 netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
2056 {
2057 struct netxen_adapter *adapter = netdev_priv(netdev);
2058 struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
2059 struct netxen_cmd_buffer *pbuf;
2060 struct netxen_skb_frag *buffrag;
2061 struct cmd_desc_type0 *hwdesc, *first_desc;
2062 struct pci_dev *pdev;
2063 int i, k;
2064 int delta = 0;
2065 struct skb_frag_struct *frag;
2066
2067 u32 producer;
2068 int frag_count, no_of_desc;
2069 u32 num_txd = tx_ring->num_desc;
2070
2071 frag_count = skb_shinfo(skb)->nr_frags + 1;
2072
2073 /* 14 frags supported for normal packet and
2074 * 32 frags supported for TSO packet
2075 */
2076 if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) {
2077
2078 for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) {
2079 frag = &skb_shinfo(skb)->frags[i];
2080 delta += skb_frag_size(frag);
2081 }
2082
2083 if (!__pskb_pull_tail(skb, delta))
2084 goto drop_packet;
2085
2086 frag_count = 1 + skb_shinfo(skb)->nr_frags;
2087 }
2088 /* 4 fragments per cmd des */
2089 no_of_desc = (frag_count + 3) >> 2;
2090
2091 if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
2092 netif_stop_queue(netdev);
2093 smp_mb();
2094 if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
2095 netif_start_queue(netdev);
2096 else
2097 return NETDEV_TX_BUSY;
2098 }
2099
2100 producer = tx_ring->producer;
2101 pbuf = &tx_ring->cmd_buf_arr[producer];
2102
2103 pdev = adapter->pdev;
2104
2105 if (netxen_map_tx_skb(pdev, skb, pbuf))
2106 goto drop_packet;
2107
2108 pbuf->skb = skb;
2109 pbuf->frag_count = frag_count;
2110
2111 first_desc = hwdesc = &tx_ring->desc_head[producer];
2112 netxen_clear_cmddesc((u64 *)hwdesc);
2113
2114 netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
2115 netxen_set_tx_port(first_desc, adapter->portnum);
2116
2117 for (i = 0; i < frag_count; i++) {
2118
2119 k = i % 4;
2120
2121 if ((k == 0) && (i > 0)) {
2122 /* move to next desc.*/
2123 producer = get_next_index(producer, num_txd);
2124 hwdesc = &tx_ring->desc_head[producer];
2125 netxen_clear_cmddesc((u64 *)hwdesc);
2126 tx_ring->cmd_buf_arr[producer].skb = NULL;
2127 }
2128
2129 buffrag = &pbuf->frag_array[i];
2130
2131 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
2132 switch (k) {
2133 case 0:
2134 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
2135 break;
2136 case 1:
2137 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
2138 break;
2139 case 2:
2140 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
2141 break;
2142 case 3:
2143 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
2144 break;
2145 }
2146 }
2147
2148 tx_ring->producer = get_next_index(producer, num_txd);
2149
2150 netxen_tso_check(netdev, tx_ring, first_desc, skb);
2151
2152 adapter->stats.txbytes += skb->len;
2153 adapter->stats.xmitcalled++;
2154
2155 netxen_nic_update_cmd_producer(adapter, tx_ring);
2156
2157 return NETDEV_TX_OK;
2158
2159 drop_packet:
2160 adapter->stats.txdropped++;
2161 dev_kfree_skb_any(skb);
2162 return NETDEV_TX_OK;
2163 }
2164
2165 static int netxen_nic_check_temp(struct netxen_adapter *adapter)
2166 {
2167 struct net_device *netdev = adapter->netdev;
2168 uint32_t temp, temp_state, temp_val;
2169 int rv = 0;
2170
2171 temp = NXRD32(adapter, CRB_TEMP_STATE);
2172
2173 temp_state = nx_get_temp_state(temp);
2174 temp_val = nx_get_temp_val(temp);
2175
2176 if (temp_state == NX_TEMP_PANIC) {
2177 printk(KERN_ALERT
2178 "%s: Device temperature %d degrees C exceeds"
2179 " maximum allowed. Hardware has been shut down.\n",
2180 netdev->name, temp_val);
2181 rv = 1;
2182 } else if (temp_state == NX_TEMP_WARN) {
2183 if (adapter->temp == NX_TEMP_NORMAL) {
2184 printk(KERN_ALERT
2185 "%s: Device temperature %d degrees C "
2186 "exceeds operating range."
2187 " Immediate action needed.\n",
2188 netdev->name, temp_val);
2189 }
2190 } else {
2191 if (adapter->temp == NX_TEMP_WARN) {
2192 printk(KERN_INFO
2193 "%s: Device temperature is now %d degrees C"
2194 " in normal range.\n", netdev->name,
2195 temp_val);
2196 }
2197 }
2198 adapter->temp = temp_state;
2199 return rv;
2200 }
2201
2202 void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
2203 {
2204 struct net_device *netdev = adapter->netdev;
2205
2206 if (adapter->ahw.linkup && !linkup) {
2207 printk(KERN_INFO "%s: %s NIC Link is down\n",
2208 netxen_nic_driver_name, netdev->name);
2209 adapter->ahw.linkup = 0;
2210 if (netif_running(netdev)) {
2211 netif_carrier_off(netdev);
2212 netif_stop_queue(netdev);
2213 }
2214 adapter->link_changed = !adapter->has_link_events;
2215 } else if (!adapter->ahw.linkup && linkup) {
2216 printk(KERN_INFO "%s: %s NIC Link is up\n",
2217 netxen_nic_driver_name, netdev->name);
2218 adapter->ahw.linkup = 1;
2219 if (netif_running(netdev)) {
2220 netif_carrier_on(netdev);
2221 netif_wake_queue(netdev);
2222 }
2223 adapter->link_changed = !adapter->has_link_events;
2224 }
2225 }
2226
2227 static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
2228 {
2229 u32 val, port, linkup;
2230
2231 port = adapter->physical_port;
2232
2233 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2234 val = NXRD32(adapter, CRB_XG_STATE_P3);
2235 val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
2236 linkup = (val == XG_LINK_UP_P3);
2237 } else {
2238 val = NXRD32(adapter, CRB_XG_STATE);
2239 val = (val >> port*8) & 0xff;
2240 linkup = (val == XG_LINK_UP);
2241 }
2242
2243 netxen_advert_link_change(adapter, linkup);
2244 }
2245
2246 static void netxen_tx_timeout(struct net_device *netdev)
2247 {
2248 struct netxen_adapter *adapter = netdev_priv(netdev);
2249
2250 if (test_bit(__NX_RESETTING, &adapter->state))
2251 return;
2252
2253 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2254 schedule_work(&adapter->tx_timeout_task);
2255 }
2256
2257 static void netxen_tx_timeout_task(struct work_struct *work)
2258 {
2259 struct netxen_adapter *adapter =
2260 container_of(work, struct netxen_adapter, tx_timeout_task);
2261
2262 if (!netif_running(adapter->netdev))
2263 return;
2264
2265 if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2266 return;
2267
2268 if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2269 goto request_reset;
2270
2271 rtnl_lock();
2272 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2273 /* try to scrub interrupt */
2274 netxen_napi_disable(adapter);
2275
2276 netxen_napi_enable(adapter);
2277
2278 netif_wake_queue(adapter->netdev);
2279
2280 clear_bit(__NX_RESETTING, &adapter->state);
2281 } else {
2282 clear_bit(__NX_RESETTING, &adapter->state);
2283 if (netxen_nic_reset_context(adapter)) {
2284 rtnl_unlock();
2285 goto request_reset;
2286 }
2287 }
2288 adapter->netdev->trans_start = jiffies;
2289 rtnl_unlock();
2290 return;
2291
2292 request_reset:
2293 adapter->need_fw_reset = 1;
2294 clear_bit(__NX_RESETTING, &adapter->state);
2295 }
2296
2297 static struct rtnl_link_stats64 *netxen_nic_get_stats(struct net_device *netdev,
2298 struct rtnl_link_stats64 *stats)
2299 {
2300 struct netxen_adapter *adapter = netdev_priv(netdev);
2301
2302 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2303 stats->tx_packets = adapter->stats.xmitfinished;
2304 stats->rx_bytes = adapter->stats.rxbytes;
2305 stats->tx_bytes = adapter->stats.txbytes;
2306 stats->rx_dropped = adapter->stats.rxdropped;
2307 stats->tx_dropped = adapter->stats.txdropped;
2308
2309 return stats;
2310 }
2311
2312 static irqreturn_t netxen_intr(int irq, void *data)
2313 {
2314 struct nx_host_sds_ring *sds_ring = data;
2315 struct netxen_adapter *adapter = sds_ring->adapter;
2316 u32 status = 0;
2317
2318 status = readl(adapter->isr_int_vec);
2319
2320 if (!(status & adapter->int_vec_bit))
2321 return IRQ_NONE;
2322
2323 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2324 /* check interrupt state machine, to be sure */
2325 status = readl(adapter->crb_int_state_reg);
2326 if (!ISR_LEGACY_INT_TRIGGERED(status))
2327 return IRQ_NONE;
2328
2329 } else {
2330 unsigned long our_int = 0;
2331
2332 our_int = readl(adapter->crb_int_state_reg);
2333
2334 /* not our interrupt */
2335 if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2336 return IRQ_NONE;
2337
2338 /* claim interrupt */
2339 writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2340
2341 /* clear interrupt */
2342 netxen_nic_disable_int(sds_ring);
2343 }
2344
2345 writel(0xffffffff, adapter->tgt_status_reg);
2346 /* read twice to ensure write is flushed */
2347 readl(adapter->isr_int_vec);
2348 readl(adapter->isr_int_vec);
2349
2350 napi_schedule(&sds_ring->napi);
2351
2352 return IRQ_HANDLED;
2353 }
2354
2355 static irqreturn_t netxen_msi_intr(int irq, void *data)
2356 {
2357 struct nx_host_sds_ring *sds_ring = data;
2358 struct netxen_adapter *adapter = sds_ring->adapter;
2359
2360 /* clear interrupt */
2361 writel(0xffffffff, adapter->tgt_status_reg);
2362
2363 napi_schedule(&sds_ring->napi);
2364 return IRQ_HANDLED;
2365 }
2366
2367 static irqreturn_t netxen_msix_intr(int irq, void *data)
2368 {
2369 struct nx_host_sds_ring *sds_ring = data;
2370
2371 napi_schedule(&sds_ring->napi);
2372 return IRQ_HANDLED;
2373 }
2374
2375 static int netxen_nic_poll(struct napi_struct *napi, int budget)
2376 {
2377 struct nx_host_sds_ring *sds_ring =
2378 container_of(napi, struct nx_host_sds_ring, napi);
2379
2380 struct netxen_adapter *adapter = sds_ring->adapter;
2381
2382 int tx_complete;
2383 int work_done;
2384
2385 tx_complete = netxen_process_cmd_ring(adapter);
2386
2387 work_done = netxen_process_rcv_ring(sds_ring, budget);
2388
2389 if (!tx_complete)
2390 work_done = budget;
2391
2392 if (work_done < budget) {
2393 napi_complete(&sds_ring->napi);
2394 if (test_bit(__NX_DEV_UP, &adapter->state))
2395 netxen_nic_enable_int(sds_ring);
2396 }
2397
2398 return work_done;
2399 }
2400
2401 #ifdef CONFIG_NET_POLL_CONTROLLER
2402 static void netxen_nic_poll_controller(struct net_device *netdev)
2403 {
2404 int ring;
2405 struct nx_host_sds_ring *sds_ring;
2406 struct netxen_adapter *adapter = netdev_priv(netdev);
2407 struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
2408
2409 disable_irq(adapter->irq);
2410 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
2411 sds_ring = &recv_ctx->sds_rings[ring];
2412 netxen_intr(adapter->irq, sds_ring);
2413 }
2414 enable_irq(adapter->irq);
2415 }
2416 #endif
2417
2418 static int
2419 nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2420 {
2421 int count;
2422 if (netxen_api_lock(adapter))
2423 return -EIO;
2424
2425 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2426
2427 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2428
2429 netxen_api_unlock(adapter);
2430 return count;
2431 }
2432
2433 static int
2434 nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2435 {
2436 int count, state;
2437 if (netxen_api_lock(adapter))
2438 return -EIO;
2439
2440 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2441 WARN_ON(count == 0);
2442
2443 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2444 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2445
2446 if (count == 0 && state != NX_DEV_FAILED)
2447 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2448
2449 netxen_api_unlock(adapter);
2450 return count;
2451 }
2452
2453 static int
2454 nx_dev_request_aer(struct netxen_adapter *adapter)
2455 {
2456 u32 state;
2457 int ret = -EINVAL;
2458
2459 if (netxen_api_lock(adapter))
2460 return ret;
2461
2462 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2463
2464 if (state == NX_DEV_NEED_AER)
2465 ret = 0;
2466 else if (state == NX_DEV_READY) {
2467 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2468 ret = 0;
2469 }
2470
2471 netxen_api_unlock(adapter);
2472 return ret;
2473 }
2474
2475 int
2476 nx_dev_request_reset(struct netxen_adapter *adapter)
2477 {
2478 u32 state;
2479 int ret = -EINVAL;
2480
2481 if (netxen_api_lock(adapter))
2482 return ret;
2483
2484 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2485
2486 if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED)
2487 ret = 0;
2488 else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2489 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2490 adapter->flags |= NETXEN_FW_RESET_OWNER;
2491 ret = 0;
2492 }
2493
2494 netxen_api_unlock(adapter);
2495
2496 return ret;
2497 }
2498
2499 static int
2500 netxen_can_start_firmware(struct netxen_adapter *adapter)
2501 {
2502 int count;
2503 int can_start = 0;
2504
2505 if (netxen_api_lock(adapter)) {
2506 nx_incr_dev_ref_cnt(adapter);
2507 return -1;
2508 }
2509
2510 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2511
2512 if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2513 count = 0;
2514
2515 if (count == 0) {
2516 can_start = 1;
2517 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2518 }
2519
2520 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2521
2522 netxen_api_unlock(adapter);
2523
2524 return can_start;
2525 }
2526
2527 static void
2528 netxen_schedule_work(struct netxen_adapter *adapter,
2529 work_func_t func, int delay)
2530 {
2531 INIT_DELAYED_WORK(&adapter->fw_work, func);
2532 schedule_delayed_work(&adapter->fw_work, delay);
2533 }
2534
2535 static void
2536 netxen_cancel_fw_work(struct netxen_adapter *adapter)
2537 {
2538 while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2539 msleep(10);
2540
2541 cancel_delayed_work_sync(&adapter->fw_work);
2542 }
2543
2544 static void
2545 netxen_attach_work(struct work_struct *work)
2546 {
2547 struct netxen_adapter *adapter = container_of(work,
2548 struct netxen_adapter, fw_work.work);
2549 struct net_device *netdev = adapter->netdev;
2550 int err = 0;
2551
2552 if (netif_running(netdev)) {
2553 err = netxen_nic_attach(adapter);
2554 if (err)
2555 goto done;
2556
2557 err = netxen_nic_up(adapter, netdev);
2558 if (err) {
2559 netxen_nic_detach(adapter);
2560 goto done;
2561 }
2562
2563 netxen_restore_indev_addr(netdev, NETDEV_UP);
2564 }
2565
2566 netif_device_attach(netdev);
2567
2568 done:
2569 adapter->fw_fail_cnt = 0;
2570 clear_bit(__NX_RESETTING, &adapter->state);
2571 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2572 }
2573
2574 static void
2575 netxen_fwinit_work(struct work_struct *work)
2576 {
2577 struct netxen_adapter *adapter = container_of(work,
2578 struct netxen_adapter, fw_work.work);
2579 int dev_state;
2580 int count;
2581 dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2582 if (adapter->flags & NETXEN_FW_RESET_OWNER) {
2583 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2584 WARN_ON(count == 0);
2585 if (count == 1) {
2586 if (adapter->mdump.md_enabled) {
2587 rtnl_lock();
2588 netxen_dump_fw(adapter);
2589 rtnl_unlock();
2590 }
2591 adapter->flags &= ~NETXEN_FW_RESET_OWNER;
2592 if (netxen_api_lock(adapter)) {
2593 clear_bit(__NX_RESETTING, &adapter->state);
2594 NXWR32(adapter, NX_CRB_DEV_STATE,
2595 NX_DEV_FAILED);
2596 return;
2597 }
2598 count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2599 NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2600 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2601 dev_state = NX_DEV_COLD;
2602 netxen_api_unlock(adapter);
2603 }
2604 }
2605
2606 switch (dev_state) {
2607 case NX_DEV_COLD:
2608 case NX_DEV_READY:
2609 if (!netxen_start_firmware(adapter)) {
2610 netxen_schedule_work(adapter, netxen_attach_work, 0);
2611 return;
2612 }
2613 break;
2614
2615 case NX_DEV_NEED_RESET:
2616 case NX_DEV_INITALIZING:
2617 netxen_schedule_work(adapter,
2618 netxen_fwinit_work, 2 * FW_POLL_DELAY);
2619 return;
2620
2621 case NX_DEV_FAILED:
2622 default:
2623 nx_incr_dev_ref_cnt(adapter);
2624 break;
2625 }
2626
2627 if (netxen_api_lock(adapter)) {
2628 clear_bit(__NX_RESETTING, &adapter->state);
2629 return;
2630 }
2631 NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_FAILED);
2632 netxen_api_unlock(adapter);
2633 dev_err(&adapter->pdev->dev, "%s: Device initialization Failed\n",
2634 adapter->netdev->name);
2635
2636 clear_bit(__NX_RESETTING, &adapter->state);
2637 }
2638
2639 static void
2640 netxen_detach_work(struct work_struct *work)
2641 {
2642 struct netxen_adapter *adapter = container_of(work,
2643 struct netxen_adapter, fw_work.work);
2644 struct net_device *netdev = adapter->netdev;
2645 int ref_cnt = 0, delay;
2646 u32 status;
2647
2648 netif_device_detach(netdev);
2649
2650 netxen_nic_down(adapter, netdev);
2651
2652 rtnl_lock();
2653 netxen_nic_detach(adapter);
2654 rtnl_unlock();
2655
2656 status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2657
2658 if (status & NX_RCODE_FATAL_ERROR)
2659 goto err_ret;
2660
2661 if (adapter->temp == NX_TEMP_PANIC)
2662 goto err_ret;
2663
2664 if (!(adapter->flags & NETXEN_FW_RESET_OWNER))
2665 ref_cnt = nx_decr_dev_ref_cnt(adapter);
2666
2667 if (ref_cnt == -EIO)
2668 goto err_ret;
2669
2670 delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2671
2672 adapter->fw_wait_cnt = 0;
2673 netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2674
2675 return;
2676
2677 err_ret:
2678 clear_bit(__NX_RESETTING, &adapter->state);
2679 }
2680
2681 static int
2682 netxen_check_health(struct netxen_adapter *adapter)
2683 {
2684 u32 state, heartbit;
2685 u32 peg_status;
2686 struct net_device *netdev = adapter->netdev;
2687
2688 state = NXRD32(adapter, NX_CRB_DEV_STATE);
2689 if (state == NX_DEV_NEED_AER)
2690 return 0;
2691
2692 if (netxen_nic_check_temp(adapter))
2693 goto detach;
2694
2695 if (adapter->need_fw_reset) {
2696 if (nx_dev_request_reset(adapter))
2697 return 0;
2698 goto detach;
2699 }
2700
2701 /* NX_DEV_NEED_RESET, this state can be marked in two cases
2702 * 1. Tx timeout 2. Fw hang
2703 * Send request to destroy context in case of tx timeout only
2704 * and doesn't required in case of Fw hang
2705 */
2706 if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED) {
2707 adapter->need_fw_reset = 1;
2708 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2709 goto detach;
2710 }
2711
2712 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2713 return 0;
2714
2715 heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2716 if (heartbit != adapter->heartbit) {
2717 adapter->heartbit = heartbit;
2718 adapter->fw_fail_cnt = 0;
2719 if (adapter->need_fw_reset)
2720 goto detach;
2721 return 0;
2722 }
2723
2724 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2725 return 0;
2726
2727 if (nx_dev_request_reset(adapter))
2728 return 0;
2729
2730 clear_bit(__NX_FW_ATTACHED, &adapter->state);
2731
2732 dev_err(&netdev->dev, "firmware hang detected\n");
2733 peg_status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2734 dev_err(&adapter->pdev->dev, "Dumping hw/fw registers\n"
2735 "PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2: 0x%x,\n"
2736 "PEG_NET_0_PC: 0x%x, PEG_NET_1_PC: 0x%x,\n"
2737 "PEG_NET_2_PC: 0x%x, PEG_NET_3_PC: 0x%x,\n"
2738 "PEG_NET_4_PC: 0x%x\n",
2739 peg_status,
2740 NXRD32(adapter, NETXEN_PEG_HALT_STATUS2),
2741 NXRD32(adapter, NETXEN_CRB_PEG_NET_0 + 0x3c),
2742 NXRD32(adapter, NETXEN_CRB_PEG_NET_1 + 0x3c),
2743 NXRD32(adapter, NETXEN_CRB_PEG_NET_2 + 0x3c),
2744 NXRD32(adapter, NETXEN_CRB_PEG_NET_3 + 0x3c),
2745 NXRD32(adapter, NETXEN_CRB_PEG_NET_4 + 0x3c));
2746 if (NX_FWERROR_PEGSTAT1(peg_status) == 0x67)
2747 dev_err(&adapter->pdev->dev,
2748 "Firmware aborted with error code 0x00006700. "
2749 "Device is being reset.\n");
2750 detach:
2751 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2752 !test_and_set_bit(__NX_RESETTING, &adapter->state))
2753 netxen_schedule_work(adapter, netxen_detach_work, 0);
2754 return 1;
2755 }
2756
2757 static void
2758 netxen_fw_poll_work(struct work_struct *work)
2759 {
2760 struct netxen_adapter *adapter = container_of(work,
2761 struct netxen_adapter, fw_work.work);
2762
2763 if (test_bit(__NX_RESETTING, &adapter->state))
2764 goto reschedule;
2765
2766 if (test_bit(__NX_DEV_UP, &adapter->state) &&
2767 !(adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)) {
2768 if (!adapter->has_link_events) {
2769
2770 netxen_nic_handle_phy_intr(adapter);
2771
2772 if (adapter->link_changed)
2773 netxen_nic_set_link_parameters(adapter);
2774 }
2775 }
2776
2777 if (netxen_check_health(adapter))
2778 return;
2779
2780 reschedule:
2781 netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2782 }
2783
2784 static ssize_t
2785 netxen_store_bridged_mode(struct device *dev,
2786 struct device_attribute *attr, const char *buf, size_t len)
2787 {
2788 struct net_device *net = to_net_dev(dev);
2789 struct netxen_adapter *adapter = netdev_priv(net);
2790 unsigned long new;
2791 int ret = -EINVAL;
2792
2793 if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2794 goto err_out;
2795
2796 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2797 goto err_out;
2798
2799 if (kstrtoul(buf, 2, &new))
2800 goto err_out;
2801
2802 if (!netxen_config_bridged_mode(adapter, !!new))
2803 ret = len;
2804
2805 err_out:
2806 return ret;
2807 }
2808
2809 static ssize_t
2810 netxen_show_bridged_mode(struct device *dev,
2811 struct device_attribute *attr, char *buf)
2812 {
2813 struct net_device *net = to_net_dev(dev);
2814 struct netxen_adapter *adapter;
2815 int bridged_mode = 0;
2816
2817 adapter = netdev_priv(net);
2818
2819 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2820 bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2821
2822 return sprintf(buf, "%d\n", bridged_mode);
2823 }
2824
2825 static struct device_attribute dev_attr_bridged_mode = {
2826 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2827 .show = netxen_show_bridged_mode,
2828 .store = netxen_store_bridged_mode,
2829 };
2830
2831 static ssize_t
2832 netxen_store_diag_mode(struct device *dev,
2833 struct device_attribute *attr, const char *buf, size_t len)
2834 {
2835 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2836 unsigned long new;
2837
2838 if (kstrtoul(buf, 2, &new))
2839 return -EINVAL;
2840
2841 if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2842 adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2843
2844 return len;
2845 }
2846
2847 static ssize_t
2848 netxen_show_diag_mode(struct device *dev,
2849 struct device_attribute *attr, char *buf)
2850 {
2851 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2852
2853 return sprintf(buf, "%d\n",
2854 !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2855 }
2856
2857 static struct device_attribute dev_attr_diag_mode = {
2858 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2859 .show = netxen_show_diag_mode,
2860 .store = netxen_store_diag_mode,
2861 };
2862
2863 static int
2864 netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2865 loff_t offset, size_t size)
2866 {
2867 size_t crb_size = 4;
2868
2869 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2870 return -EIO;
2871
2872 if (offset < NETXEN_PCI_CRBSPACE) {
2873 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2874 return -EINVAL;
2875
2876 if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2877 NETXEN_PCI_CAMQM_2M_END))
2878 crb_size = 8;
2879 else
2880 return -EINVAL;
2881 }
2882
2883 if ((size != crb_size) || (offset & (crb_size-1)))
2884 return -EINVAL;
2885
2886 return 0;
2887 }
2888
2889 static ssize_t
2890 netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2891 struct bin_attribute *attr,
2892 char *buf, loff_t offset, size_t size)
2893 {
2894 struct device *dev = container_of(kobj, struct device, kobj);
2895 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2896 u32 data;
2897 u64 qmdata;
2898 int ret;
2899
2900 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2901 if (ret != 0)
2902 return ret;
2903
2904 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2905 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2906 NETXEN_PCI_CAMQM_2M_END)) {
2907 netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2908 memcpy(buf, &qmdata, size);
2909 } else {
2910 data = NXRD32(adapter, offset);
2911 memcpy(buf, &data, size);
2912 }
2913
2914 return size;
2915 }
2916
2917 static ssize_t
2918 netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2919 struct bin_attribute *attr,
2920 char *buf, loff_t offset, size_t size)
2921 {
2922 struct device *dev = container_of(kobj, struct device, kobj);
2923 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2924 u32 data;
2925 u64 qmdata;
2926 int ret;
2927
2928 ret = netxen_sysfs_validate_crb(adapter, offset, size);
2929 if (ret != 0)
2930 return ret;
2931
2932 if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2933 ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2934 NETXEN_PCI_CAMQM_2M_END)) {
2935 memcpy(&qmdata, buf, size);
2936 netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2937 } else {
2938 memcpy(&data, buf, size);
2939 NXWR32(adapter, offset, data);
2940 }
2941
2942 return size;
2943 }
2944
2945 static int
2946 netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2947 loff_t offset, size_t size)
2948 {
2949 if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2950 return -EIO;
2951
2952 if ((size != 8) || (offset & 0x7))
2953 return -EIO;
2954
2955 return 0;
2956 }
2957
2958 static ssize_t
2959 netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2960 struct bin_attribute *attr,
2961 char *buf, loff_t offset, size_t size)
2962 {
2963 struct device *dev = container_of(kobj, struct device, kobj);
2964 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2965 u64 data;
2966 int ret;
2967
2968 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2969 if (ret != 0)
2970 return ret;
2971
2972 if (adapter->pci_mem_read(adapter, offset, &data))
2973 return -EIO;
2974
2975 memcpy(buf, &data, size);
2976
2977 return size;
2978 }
2979
2980 static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2981 struct bin_attribute *attr, char *buf,
2982 loff_t offset, size_t size)
2983 {
2984 struct device *dev = container_of(kobj, struct device, kobj);
2985 struct netxen_adapter *adapter = dev_get_drvdata(dev);
2986 u64 data;
2987 int ret;
2988
2989 ret = netxen_sysfs_validate_mem(adapter, offset, size);
2990 if (ret != 0)
2991 return ret;
2992
2993 memcpy(&data, buf, size);
2994
2995 if (adapter->pci_mem_write(adapter, offset, data))
2996 return -EIO;
2997
2998 return size;
2999 }
3000
3001
3002 static struct bin_attribute bin_attr_crb = {
3003 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
3004 .size = 0,
3005 .read = netxen_sysfs_read_crb,
3006 .write = netxen_sysfs_write_crb,
3007 };
3008
3009 static struct bin_attribute bin_attr_mem = {
3010 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
3011 .size = 0,
3012 .read = netxen_sysfs_read_mem,
3013 .write = netxen_sysfs_write_mem,
3014 };
3015
3016 static ssize_t
3017 netxen_sysfs_read_dimm(struct file *filp, struct kobject *kobj,
3018 struct bin_attribute *attr,
3019 char *buf, loff_t offset, size_t size)
3020 {
3021 struct device *dev = container_of(kobj, struct device, kobj);
3022 struct netxen_adapter *adapter = dev_get_drvdata(dev);
3023 struct net_device *netdev = adapter->netdev;
3024 struct netxen_dimm_cfg dimm;
3025 u8 dw, rows, cols, banks, ranks;
3026 u32 val;
3027
3028 if (size < attr->size) {
3029 netdev_err(netdev, "Invalid size\n");
3030 return -EINVAL;
3031 }
3032
3033 memset(&dimm, 0, sizeof(struct netxen_dimm_cfg));
3034 val = NXRD32(adapter, NETXEN_DIMM_CAPABILITY);
3035
3036 /* Checks if DIMM info is valid. */
3037 if (val & NETXEN_DIMM_VALID_FLAG) {
3038 netdev_err(netdev, "Invalid DIMM flag\n");
3039 dimm.presence = 0xff;
3040 goto out;
3041 }
3042
3043 rows = NETXEN_DIMM_NUMROWS(val);
3044 cols = NETXEN_DIMM_NUMCOLS(val);
3045 ranks = NETXEN_DIMM_NUMRANKS(val);
3046 banks = NETXEN_DIMM_NUMBANKS(val);
3047 dw = NETXEN_DIMM_DATAWIDTH(val);
3048
3049 dimm.presence = (val & NETXEN_DIMM_PRESENT);
3050
3051 /* Checks if DIMM info is present. */
3052 if (!dimm.presence) {
3053 netdev_err(netdev, "DIMM not present\n");
3054 goto out;
3055 }
3056
3057 dimm.dimm_type = NETXEN_DIMM_TYPE(val);
3058
3059 switch (dimm.dimm_type) {
3060 case NETXEN_DIMM_TYPE_RDIMM:
3061 case NETXEN_DIMM_TYPE_UDIMM:
3062 case NETXEN_DIMM_TYPE_SO_DIMM:
3063 case NETXEN_DIMM_TYPE_Micro_DIMM:
3064 case NETXEN_DIMM_TYPE_Mini_RDIMM:
3065 case NETXEN_DIMM_TYPE_Mini_UDIMM:
3066 break;
3067 default:
3068 netdev_err(netdev, "Invalid DIMM type %x\n", dimm.dimm_type);
3069 goto out;
3070 }
3071
3072 if (val & NETXEN_DIMM_MEMTYPE_DDR2_SDRAM)
3073 dimm.mem_type = NETXEN_DIMM_MEM_DDR2_SDRAM;
3074 else
3075 dimm.mem_type = NETXEN_DIMM_MEMTYPE(val);
3076
3077 if (val & NETXEN_DIMM_SIZE) {
3078 dimm.size = NETXEN_DIMM_STD_MEM_SIZE;
3079 goto out;
3080 }
3081
3082 if (!rows) {
3083 netdev_err(netdev, "Invalid no of rows %x\n", rows);
3084 goto out;
3085 }
3086
3087 if (!cols) {
3088 netdev_err(netdev, "Invalid no of columns %x\n", cols);
3089 goto out;
3090 }
3091
3092 if (!banks) {
3093 netdev_err(netdev, "Invalid no of banks %x\n", banks);
3094 goto out;
3095 }
3096
3097 ranks += 1;
3098
3099 switch (dw) {
3100 case 0x0:
3101 dw = 32;
3102 break;
3103 case 0x1:
3104 dw = 33;
3105 break;
3106 case 0x2:
3107 dw = 36;
3108 break;
3109 case 0x3:
3110 dw = 64;
3111 break;
3112 case 0x4:
3113 dw = 72;
3114 break;
3115 case 0x5:
3116 dw = 80;
3117 break;
3118 case 0x6:
3119 dw = 128;
3120 break;
3121 case 0x7:
3122 dw = 144;
3123 break;
3124 default:
3125 netdev_err(netdev, "Invalid data-width %x\n", dw);
3126 goto out;
3127 }
3128
3129 dimm.size = ((1 << rows) * (1 << cols) * dw * banks * ranks) / 8;
3130 /* Size returned in MB. */
3131 dimm.size = (dimm.size) / 0x100000;
3132 out:
3133 memcpy(buf, &dimm, sizeof(struct netxen_dimm_cfg));
3134 return sizeof(struct netxen_dimm_cfg);
3135
3136 }
3137
3138 static struct bin_attribute bin_attr_dimm = {
3139 .attr = { .name = "dimm", .mode = (S_IRUGO | S_IWUSR) },
3140 .size = sizeof(struct netxen_dimm_cfg),
3141 .read = netxen_sysfs_read_dimm,
3142 };
3143
3144
3145 static void
3146 netxen_create_sysfs_entries(struct netxen_adapter *adapter)
3147 {
3148 struct device *dev = &adapter->pdev->dev;
3149
3150 if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
3151 /* bridged_mode control */
3152 if (device_create_file(dev, &dev_attr_bridged_mode)) {
3153 dev_warn(dev,
3154 "failed to create bridged_mode sysfs entry\n");
3155 }
3156 }
3157 }
3158
3159 static void
3160 netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
3161 {
3162 struct device *dev = &adapter->pdev->dev;
3163
3164 if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
3165 device_remove_file(dev, &dev_attr_bridged_mode);
3166 }
3167
3168 static void
3169 netxen_create_diag_entries(struct netxen_adapter *adapter)
3170 {
3171 struct pci_dev *pdev = adapter->pdev;
3172 struct device *dev;
3173
3174 dev = &pdev->dev;
3175 if (device_create_file(dev, &dev_attr_diag_mode))
3176 dev_info(dev, "failed to create diag_mode sysfs entry\n");
3177 if (device_create_bin_file(dev, &bin_attr_crb))
3178 dev_info(dev, "failed to create crb sysfs entry\n");
3179 if (device_create_bin_file(dev, &bin_attr_mem))
3180 dev_info(dev, "failed to create mem sysfs entry\n");
3181 if (device_create_bin_file(dev, &bin_attr_dimm))
3182 dev_info(dev, "failed to create dimm sysfs entry\n");
3183 }
3184
3185
3186 static void
3187 netxen_remove_diag_entries(struct netxen_adapter *adapter)
3188 {
3189 struct pci_dev *pdev = adapter->pdev;
3190 struct device *dev = &pdev->dev;
3191
3192 device_remove_file(dev, &dev_attr_diag_mode);
3193 device_remove_bin_file(dev, &bin_attr_crb);
3194 device_remove_bin_file(dev, &bin_attr_mem);
3195 device_remove_bin_file(dev, &bin_attr_dimm);
3196 }
3197
3198 #ifdef CONFIG_INET
3199
3200 #define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
3201
3202 static int
3203 netxen_destip_supported(struct netxen_adapter *adapter)
3204 {
3205 if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
3206 return 0;
3207
3208 if (adapter->ahw.cut_through)
3209 return 0;
3210
3211 return 1;
3212 }
3213
3214 static void
3215 netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
3216 {
3217 struct nx_ip_list *cur, *tmp_cur;
3218
3219 list_for_each_entry_safe(cur, tmp_cur, &adapter->ip_list, list) {
3220 if (master) {
3221 if (cur->master) {
3222 netxen_config_ipaddr(adapter, cur->ip_addr,
3223 NX_IP_DOWN);
3224 list_del(&cur->list);
3225 kfree(cur);
3226 }
3227 } else {
3228 netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN);
3229 list_del(&cur->list);
3230 kfree(cur);
3231 }
3232 }
3233 }
3234
3235 static bool
3236 netxen_list_config_ip(struct netxen_adapter *adapter,
3237 struct in_ifaddr *ifa, unsigned long event)
3238 {
3239 struct net_device *dev;
3240 struct nx_ip_list *cur, *tmp_cur;
3241 struct list_head *head;
3242 bool ret = false;
3243
3244 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3245
3246 if (dev == NULL)
3247 goto out;
3248
3249 switch (event) {
3250 case NX_IP_UP:
3251 list_for_each(head, &adapter->ip_list) {
3252 cur = list_entry(head, struct nx_ip_list, list);
3253
3254 if (cur->ip_addr == ifa->ifa_address)
3255 goto out;
3256 }
3257
3258 cur = kzalloc(sizeof(struct nx_ip_list), GFP_ATOMIC);
3259 if (cur == NULL)
3260 goto out;
3261 if (dev->priv_flags & IFF_802_1Q_VLAN)
3262 dev = vlan_dev_real_dev(dev);
3263 cur->master = !!netif_is_bond_master(dev);
3264 cur->ip_addr = ifa->ifa_address;
3265 list_add_tail(&cur->list, &adapter->ip_list);
3266 netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
3267 ret = true;
3268 break;
3269 case NX_IP_DOWN:
3270 list_for_each_entry_safe(cur, tmp_cur,
3271 &adapter->ip_list, list) {
3272 if (cur->ip_addr == ifa->ifa_address) {
3273 list_del(&cur->list);
3274 kfree(cur);
3275 netxen_config_ipaddr(adapter, ifa->ifa_address,
3276 NX_IP_DOWN);
3277 ret = true;
3278 break;
3279 }
3280 }
3281 }
3282 out:
3283 return ret;
3284 }
3285
3286 static void
3287 netxen_config_indev_addr(struct netxen_adapter *adapter,
3288 struct net_device *dev, unsigned long event)
3289 {
3290 struct in_device *indev;
3291
3292 if (!netxen_destip_supported(adapter))
3293 return;
3294
3295 indev = in_dev_get(dev);
3296 if (!indev)
3297 return;
3298
3299 for_ifa(indev) {
3300 switch (event) {
3301 case NETDEV_UP:
3302 netxen_list_config_ip(adapter, ifa, NX_IP_UP);
3303 break;
3304 case NETDEV_DOWN:
3305 netxen_list_config_ip(adapter, ifa, NX_IP_DOWN);
3306 break;
3307 default:
3308 break;
3309 }
3310 } endfor_ifa(indev);
3311
3312 in_dev_put(indev);
3313 }
3314
3315 static void
3316 netxen_restore_indev_addr(struct net_device *netdev, unsigned long event)
3317
3318 {
3319 struct netxen_adapter *adapter = netdev_priv(netdev);
3320 struct nx_ip_list *pos, *tmp_pos;
3321 unsigned long ip_event;
3322
3323 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3324 netxen_config_indev_addr(adapter, netdev, event);
3325
3326 list_for_each_entry_safe(pos, tmp_pos, &adapter->ip_list, list) {
3327 netxen_config_ipaddr(adapter, pos->ip_addr, ip_event);
3328 }
3329 }
3330
3331 static inline bool
3332 netxen_config_checkdev(struct net_device *dev)
3333 {
3334 struct netxen_adapter *adapter;
3335
3336 if (!is_netxen_netdev(dev))
3337 return false;
3338 adapter = netdev_priv(dev);
3339 if (!adapter)
3340 return false;
3341 if (!netxen_destip_supported(adapter))
3342 return false;
3343 if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
3344 return false;
3345
3346 return true;
3347 }
3348
3349 /**
3350 * netxen_config_master - configure addresses based on master
3351 * @dev: netxen device
3352 * @event: netdev event
3353 */
3354 static void netxen_config_master(struct net_device *dev, unsigned long event)
3355 {
3356 struct net_device *master, *slave;
3357 struct netxen_adapter *adapter = netdev_priv(dev);
3358
3359 rcu_read_lock();
3360 master = netdev_master_upper_dev_get_rcu(dev);
3361 /*
3362 * This is the case where the netxen nic is being
3363 * enslaved and is dev_open()ed in bond_enslave()
3364 * Now we should program the bond's (and its vlans')
3365 * addresses in the netxen NIC.
3366 */
3367 if (master && netif_is_bond_master(master) &&
3368 !netif_is_bond_slave(dev)) {
3369 netxen_config_indev_addr(adapter, master, event);
3370 for_each_netdev_rcu(&init_net, slave)
3371 if (slave->priv_flags & IFF_802_1Q_VLAN &&
3372 vlan_dev_real_dev(slave) == master)
3373 netxen_config_indev_addr(adapter, slave, event);
3374 }
3375 rcu_read_unlock();
3376 /*
3377 * This is the case where the netxen nic is being
3378 * released and is dev_close()ed in bond_release()
3379 * just before IFF_BONDING is stripped.
3380 */
3381 if (!master && dev->priv_flags & IFF_BONDING)
3382 netxen_free_ip_list(adapter, true);
3383 }
3384
3385 static int netxen_netdev_event(struct notifier_block *this,
3386 unsigned long event, void *ptr)
3387 {
3388 struct netxen_adapter *adapter;
3389 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3390 struct net_device *orig_dev = dev;
3391 struct net_device *slave;
3392
3393 recheck:
3394 if (dev == NULL)
3395 goto done;
3396
3397 if (dev->priv_flags & IFF_802_1Q_VLAN) {
3398 dev = vlan_dev_real_dev(dev);
3399 goto recheck;
3400 }
3401 if (event == NETDEV_UP || event == NETDEV_DOWN) {
3402 /* If this is a bonding device, look for netxen-based slaves*/
3403 if (netif_is_bond_master(dev)) {
3404 rcu_read_lock();
3405 for_each_netdev_in_bond_rcu(dev, slave) {
3406 if (!netxen_config_checkdev(slave))
3407 continue;
3408 adapter = netdev_priv(slave);
3409 netxen_config_indev_addr(adapter,
3410 orig_dev, event);
3411 }
3412 rcu_read_unlock();
3413 } else {
3414 if (!netxen_config_checkdev(dev))
3415 goto done;
3416 adapter = netdev_priv(dev);
3417 /* Act only if the actual netxen is the target */
3418 if (orig_dev == dev)
3419 netxen_config_master(dev, event);
3420 netxen_config_indev_addr(adapter, orig_dev, event);
3421 }
3422 }
3423 done:
3424 return NOTIFY_DONE;
3425 }
3426
3427 static int
3428 netxen_inetaddr_event(struct notifier_block *this,
3429 unsigned long event, void *ptr)
3430 {
3431 struct netxen_adapter *adapter;
3432 struct net_device *dev, *slave;
3433 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3434 unsigned long ip_event;
3435
3436 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3437 ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3438 recheck:
3439 if (dev == NULL)
3440 goto done;
3441
3442 if (dev->priv_flags & IFF_802_1Q_VLAN) {
3443 dev = vlan_dev_real_dev(dev);
3444 goto recheck;
3445 }
3446 if (event == NETDEV_UP || event == NETDEV_DOWN) {
3447 /* If this is a bonding device, look for netxen-based slaves*/
3448 if (netif_is_bond_master(dev)) {
3449 rcu_read_lock();
3450 for_each_netdev_in_bond_rcu(dev, slave) {
3451 if (!netxen_config_checkdev(slave))
3452 continue;
3453 adapter = netdev_priv(slave);
3454 netxen_list_config_ip(adapter, ifa, ip_event);
3455 }
3456 rcu_read_unlock();
3457 } else {
3458 if (!netxen_config_checkdev(dev))
3459 goto done;
3460 adapter = netdev_priv(dev);
3461 netxen_list_config_ip(adapter, ifa, ip_event);
3462 }
3463 }
3464 done:
3465 return NOTIFY_DONE;
3466 }
3467
3468 static struct notifier_block netxen_netdev_cb = {
3469 .notifier_call = netxen_netdev_event,
3470 };
3471
3472 static struct notifier_block netxen_inetaddr_cb = {
3473 .notifier_call = netxen_inetaddr_event,
3474 };
3475 #else
3476 static void
3477 netxen_restore_indev_addr(struct net_device *dev, unsigned long event)
3478 { }
3479 static void
3480 netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
3481 { }
3482 #endif
3483
3484 static const struct pci_error_handlers netxen_err_handler = {
3485 .error_detected = netxen_io_error_detected,
3486 .slot_reset = netxen_io_slot_reset,
3487 .resume = netxen_io_resume,
3488 };
3489
3490 static struct pci_driver netxen_driver = {
3491 .name = netxen_nic_driver_name,
3492 .id_table = netxen_pci_tbl,
3493 .probe = netxen_nic_probe,
3494 .remove = netxen_nic_remove,
3495 #ifdef CONFIG_PM
3496 .suspend = netxen_nic_suspend,
3497 .resume = netxen_nic_resume,
3498 #endif
3499 .shutdown = netxen_nic_shutdown,
3500 .err_handler = &netxen_err_handler
3501 };
3502
3503 static int __init netxen_init_module(void)
3504 {
3505 printk(KERN_INFO "%s\n", netxen_nic_driver_string);
3506
3507 #ifdef CONFIG_INET
3508 register_netdevice_notifier(&netxen_netdev_cb);
3509 register_inetaddr_notifier(&netxen_inetaddr_cb);
3510 #endif
3511 return pci_register_driver(&netxen_driver);
3512 }
3513
3514 module_init(netxen_init_module);
3515
3516 static void __exit netxen_exit_module(void)
3517 {
3518 pci_unregister_driver(&netxen_driver);
3519
3520 #ifdef CONFIG_INET
3521 unregister_inetaddr_notifier(&netxen_inetaddr_cb);
3522 unregister_netdevice_notifier(&netxen_netdev_cb);
3523 #endif
3524 }
3525
3526 module_exit(netxen_exit_module);
Linux kernel - Deliverables
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