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06349908092f329f5e651a1e727af114452e05c9
[deliverable/linux.git] / drivers / net / qlcnic / qlcnic_main.c
1 /*
2 * Copyright (C) 2009 - QLogic Corporation.
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 * MA 02111-1307, USA.
19 *
20 * The full GNU General Public License is included in this distribution
21 * in the file called "COPYING".
22 *
23 */
24
25 #include <linux/slab.h>
26 #include <linux/vmalloc.h>
27 #include <linux/interrupt.h>
28
29 #include "qlcnic.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
38 MODULE_DESCRIPTION("QLogic 10 GbE Converged Ethernet Driver");
39 MODULE_LICENSE("GPL");
40 MODULE_VERSION(QLCNIC_LINUX_VERSIONID);
41 MODULE_FIRMWARE(QLCNIC_UNIFIED_ROMIMAGE_NAME);
42
43 char qlcnic_driver_name[] = "qlcnic";
44 static const char qlcnic_driver_string[] = "QLogic Converged Ethernet Driver v"
45 QLCNIC_LINUX_VERSIONID;
46
47 static int port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
48
49 /* Default to restricted 1G auto-neg mode */
50 static int wol_port_mode = 5;
51
52 static int use_msi = 1;
53 module_param(use_msi, int, 0644);
54 MODULE_PARM_DESC(use_msi, "MSI interrupt (0=disabled, 1=enabled");
55
56 static int use_msi_x = 1;
57 module_param(use_msi_x, int, 0644);
58 MODULE_PARM_DESC(use_msi_x, "MSI-X interrupt (0=disabled, 1=enabled");
59
60 static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
61 module_param(auto_fw_reset, int, 0644);
62 MODULE_PARM_DESC(auto_fw_reset, "Auto firmware reset (0=disabled, 1=enabled");
63
64 static int __devinit qlcnic_probe(struct pci_dev *pdev,
65 const struct pci_device_id *ent);
66 static void __devexit qlcnic_remove(struct pci_dev *pdev);
67 static int qlcnic_open(struct net_device *netdev);
68 static int qlcnic_close(struct net_device *netdev);
69 static void qlcnic_tx_timeout(struct net_device *netdev);
70 static void qlcnic_tx_timeout_task(struct work_struct *work);
71 static void qlcnic_attach_work(struct work_struct *work);
72 static void qlcnic_fwinit_work(struct work_struct *work);
73 static void qlcnic_fw_poll_work(struct work_struct *work);
74 static void qlcnic_schedule_work(struct qlcnic_adapter *adapter,
75 work_func_t func, int delay);
76 static void qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter);
77 static int qlcnic_poll(struct napi_struct *napi, int budget);
78 #ifdef CONFIG_NET_POLL_CONTROLLER
79 static void qlcnic_poll_controller(struct net_device *netdev);
80 #endif
81
82 static void qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter);
83 static void qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter);
84 static void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter);
85 static void qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter);
86
87 static void qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter);
88 static int qlcnic_can_start_firmware(struct qlcnic_adapter *adapter);
89
90 static irqreturn_t qlcnic_tmp_intr(int irq, void *data);
91 static irqreturn_t qlcnic_intr(int irq, void *data);
92 static irqreturn_t qlcnic_msi_intr(int irq, void *data);
93 static irqreturn_t qlcnic_msix_intr(int irq, void *data);
94
95 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev);
96 static void qlcnic_config_indev_addr(struct net_device *dev, unsigned long);
97
98 /* PCI Device ID Table */
99 #define ENTRY(device) \
100 {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, (device)), \
101 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
102
103 #define PCI_DEVICE_ID_QLOGIC_QLE824X 0x8020
104
105 static DEFINE_PCI_DEVICE_TABLE(qlcnic_pci_tbl) = {
106 ENTRY(PCI_DEVICE_ID_QLOGIC_QLE824X),
107 {0,}
108 };
109
110 MODULE_DEVICE_TABLE(pci, qlcnic_pci_tbl);
111
112
113 void
114 qlcnic_update_cmd_producer(struct qlcnic_adapter *adapter,
115 struct qlcnic_host_tx_ring *tx_ring)
116 {
117 writel(tx_ring->producer, tx_ring->crb_cmd_producer);
118
119 if (qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH) {
120 netif_stop_queue(adapter->netdev);
121 smp_mb();
122 adapter->stats.xmit_off++;
123 }
124 }
125
126 static const u32 msi_tgt_status[8] = {
127 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
128 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
129 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
130 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
131 };
132
133 static const
134 struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG;
135
136 static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring)
137 {
138 writel(0, sds_ring->crb_intr_mask);
139 }
140
141 static inline void qlcnic_enable_int(struct qlcnic_host_sds_ring *sds_ring)
142 {
143 struct qlcnic_adapter *adapter = sds_ring->adapter;
144
145 writel(0x1, sds_ring->crb_intr_mask);
146
147 if (!QLCNIC_IS_MSI_FAMILY(adapter))
148 writel(0xfbff, adapter->tgt_mask_reg);
149 }
150
151 static int
152 qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count)
153 {
154 int size = sizeof(struct qlcnic_host_sds_ring) * count;
155
156 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
157
158 return (recv_ctx->sds_rings == NULL);
159 }
160
161 static void
162 qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
163 {
164 if (recv_ctx->sds_rings != NULL)
165 kfree(recv_ctx->sds_rings);
166
167 recv_ctx->sds_rings = NULL;
168 }
169
170 static int
171 qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
172 {
173 int ring;
174 struct qlcnic_host_sds_ring *sds_ring;
175 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
176
177 if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
178 return -ENOMEM;
179
180 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
181 sds_ring = &recv_ctx->sds_rings[ring];
182 netif_napi_add(netdev, &sds_ring->napi,
183 qlcnic_poll, QLCNIC_NETDEV_WEIGHT);
184 }
185
186 return 0;
187 }
188
189 static void
190 qlcnic_napi_del(struct qlcnic_adapter *adapter)
191 {
192 int ring;
193 struct qlcnic_host_sds_ring *sds_ring;
194 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
195
196 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
197 sds_ring = &recv_ctx->sds_rings[ring];
198 netif_napi_del(&sds_ring->napi);
199 }
200
201 qlcnic_free_sds_rings(&adapter->recv_ctx);
202 }
203
204 static void
205 qlcnic_napi_enable(struct qlcnic_adapter *adapter)
206 {
207 int ring;
208 struct qlcnic_host_sds_ring *sds_ring;
209 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
210
211 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
212 sds_ring = &recv_ctx->sds_rings[ring];
213 napi_enable(&sds_ring->napi);
214 qlcnic_enable_int(sds_ring);
215 }
216 }
217
218 static void
219 qlcnic_napi_disable(struct qlcnic_adapter *adapter)
220 {
221 int ring;
222 struct qlcnic_host_sds_ring *sds_ring;
223 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
224
225 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
226 sds_ring = &recv_ctx->sds_rings[ring];
227 qlcnic_disable_int(sds_ring);
228 napi_synchronize(&sds_ring->napi);
229 napi_disable(&sds_ring->napi);
230 }
231 }
232
233 static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
234 {
235 memset(&adapter->stats, 0, sizeof(adapter->stats));
236 return;
237 }
238
239 static int qlcnic_set_dma_mask(struct qlcnic_adapter *adapter)
240 {
241 struct pci_dev *pdev = adapter->pdev;
242 u64 mask, cmask;
243
244 adapter->pci_using_dac = 0;
245
246 mask = DMA_BIT_MASK(39);
247 cmask = mask;
248
249 if (pci_set_dma_mask(pdev, mask) == 0 &&
250 pci_set_consistent_dma_mask(pdev, cmask) == 0) {
251 adapter->pci_using_dac = 1;
252 return 0;
253 }
254
255 return -EIO;
256 }
257
258 /* Update addressable range if firmware supports it */
259 static int
260 qlcnic_update_dma_mask(struct qlcnic_adapter *adapter)
261 {
262 int change, shift, err;
263 u64 mask, old_mask, old_cmask;
264 struct pci_dev *pdev = adapter->pdev;
265
266 change = 0;
267
268 shift = QLCRD32(adapter, CRB_DMA_SHIFT);
269 if (shift > 32)
270 return 0;
271
272 if (shift > 9)
273 change = 1;
274
275 if (change) {
276 old_mask = pdev->dma_mask;
277 old_cmask = pdev->dev.coherent_dma_mask;
278
279 mask = DMA_BIT_MASK(32+shift);
280
281 err = pci_set_dma_mask(pdev, mask);
282 if (err)
283 goto err_out;
284
285 err = pci_set_consistent_dma_mask(pdev, mask);
286 if (err)
287 goto err_out;
288 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
289 }
290
291 return 0;
292
293 err_out:
294 pci_set_dma_mask(pdev, old_mask);
295 pci_set_consistent_dma_mask(pdev, old_cmask);
296 return err;
297 }
298
299 static void qlcnic_set_port_mode(struct qlcnic_adapter *adapter)
300 {
301 u32 val, data;
302
303 val = adapter->ahw.board_type;
304 if ((val == QLCNIC_BRDTYPE_P3_HMEZ) ||
305 (val == QLCNIC_BRDTYPE_P3_XG_LOM)) {
306 if (port_mode == QLCNIC_PORT_MODE_802_3_AP) {
307 data = QLCNIC_PORT_MODE_802_3_AP;
308 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
309 } else if (port_mode == QLCNIC_PORT_MODE_XG) {
310 data = QLCNIC_PORT_MODE_XG;
311 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
312 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_1G) {
313 data = QLCNIC_PORT_MODE_AUTO_NEG_1G;
314 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
315 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_XG) {
316 data = QLCNIC_PORT_MODE_AUTO_NEG_XG;
317 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
318 } else {
319 data = QLCNIC_PORT_MODE_AUTO_NEG;
320 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
321 }
322
323 if ((wol_port_mode != QLCNIC_PORT_MODE_802_3_AP) &&
324 (wol_port_mode != QLCNIC_PORT_MODE_XG) &&
325 (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_1G) &&
326 (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_XG)) {
327 wol_port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
328 }
329 QLCWR32(adapter, QLCNIC_WOL_PORT_MODE, wol_port_mode);
330 }
331 }
332
333 static void qlcnic_set_msix_bit(struct pci_dev *pdev, int enable)
334 {
335 u32 control;
336 int pos;
337
338 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
339 if (pos) {
340 pci_read_config_dword(pdev, pos, &control);
341 if (enable)
342 control |= PCI_MSIX_FLAGS_ENABLE;
343 else
344 control = 0;
345 pci_write_config_dword(pdev, pos, control);
346 }
347 }
348
349 static void qlcnic_init_msix_entries(struct qlcnic_adapter *adapter, int count)
350 {
351 int i;
352
353 for (i = 0; i < count; i++)
354 adapter->msix_entries[i].entry = i;
355 }
356
357 static int
358 qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
359 {
360 int i;
361 unsigned char *p;
362 u64 mac_addr;
363 struct net_device *netdev = adapter->netdev;
364 struct pci_dev *pdev = adapter->pdev;
365
366 if (qlcnic_get_mac_addr(adapter, &mac_addr) != 0)
367 return -EIO;
368
369 p = (unsigned char *)&mac_addr;
370 for (i = 0; i < 6; i++)
371 netdev->dev_addr[i] = *(p + 5 - i);
372
373 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
374 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
375
376 /* set station address */
377
378 if (!is_valid_ether_addr(netdev->perm_addr))
379 dev_warn(&pdev->dev, "Bad MAC address %pM.\n",
380 netdev->dev_addr);
381
382 return 0;
383 }
384
385 static int qlcnic_set_mac(struct net_device *netdev, void *p)
386 {
387 struct qlcnic_adapter *adapter = netdev_priv(netdev);
388 struct sockaddr *addr = p;
389
390 if (!is_valid_ether_addr(addr->sa_data))
391 return -EINVAL;
392
393 if (netif_running(netdev)) {
394 netif_device_detach(netdev);
395 qlcnic_napi_disable(adapter);
396 }
397
398 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
399 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
400 qlcnic_set_multi(adapter->netdev);
401
402 if (netif_running(netdev)) {
403 netif_device_attach(netdev);
404 qlcnic_napi_enable(adapter);
405 }
406 return 0;
407 }
408
409 static const struct net_device_ops qlcnic_netdev_ops = {
410 .ndo_open = qlcnic_open,
411 .ndo_stop = qlcnic_close,
412 .ndo_start_xmit = qlcnic_xmit_frame,
413 .ndo_get_stats = qlcnic_get_stats,
414 .ndo_validate_addr = eth_validate_addr,
415 .ndo_set_multicast_list = qlcnic_set_multi,
416 .ndo_set_mac_address = qlcnic_set_mac,
417 .ndo_change_mtu = qlcnic_change_mtu,
418 .ndo_tx_timeout = qlcnic_tx_timeout,
419 #ifdef CONFIG_NET_POLL_CONTROLLER
420 .ndo_poll_controller = qlcnic_poll_controller,
421 #endif
422 };
423
424 static void
425 qlcnic_setup_intr(struct qlcnic_adapter *adapter)
426 {
427 const struct qlcnic_legacy_intr_set *legacy_intrp;
428 struct pci_dev *pdev = adapter->pdev;
429 int err, num_msix;
430
431 if (adapter->rss_supported) {
432 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
433 MSIX_ENTRIES_PER_ADAPTER : 2;
434 } else
435 num_msix = 1;
436
437 adapter->max_sds_rings = 1;
438
439 adapter->flags &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED);
440
441 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
442
443 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
444 adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
445 legacy_intrp->tgt_status_reg);
446 adapter->tgt_mask_reg = qlcnic_get_ioaddr(adapter,
447 legacy_intrp->tgt_mask_reg);
448 adapter->isr_int_vec = qlcnic_get_ioaddr(adapter, ISR_INT_VECTOR);
449
450 adapter->crb_int_state_reg = qlcnic_get_ioaddr(adapter,
451 ISR_INT_STATE_REG);
452
453 qlcnic_set_msix_bit(pdev, 0);
454
455 if (adapter->msix_supported) {
456
457 qlcnic_init_msix_entries(adapter, num_msix);
458 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
459 if (err == 0) {
460 adapter->flags |= QLCNIC_MSIX_ENABLED;
461 qlcnic_set_msix_bit(pdev, 1);
462
463 if (adapter->rss_supported)
464 adapter->max_sds_rings = num_msix;
465
466 dev_info(&pdev->dev, "using msi-x interrupts\n");
467 return;
468 }
469
470 if (err > 0)
471 pci_disable_msix(pdev);
472
473 /* fall through for msi */
474 }
475
476 if (use_msi && !pci_enable_msi(pdev)) {
477 adapter->flags |= QLCNIC_MSI_ENABLED;
478 adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
479 msi_tgt_status[adapter->ahw.pci_func]);
480 dev_info(&pdev->dev, "using msi interrupts\n");
481 adapter->msix_entries[0].vector = pdev->irq;
482 return;
483 }
484
485 dev_info(&pdev->dev, "using legacy interrupts\n");
486 adapter->msix_entries[0].vector = pdev->irq;
487 }
488
489 static void
490 qlcnic_teardown_intr(struct qlcnic_adapter *adapter)
491 {
492 if (adapter->flags & QLCNIC_MSIX_ENABLED)
493 pci_disable_msix(adapter->pdev);
494 if (adapter->flags & QLCNIC_MSI_ENABLED)
495 pci_disable_msi(adapter->pdev);
496 }
497
498 static void
499 qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter)
500 {
501 if (adapter->ahw.pci_base0 != NULL)
502 iounmap(adapter->ahw.pci_base0);
503 }
504
505 static int
506 qlcnic_setup_pci_map(struct qlcnic_adapter *adapter)
507 {
508 void __iomem *mem_ptr0 = NULL;
509 resource_size_t mem_base;
510 unsigned long mem_len, pci_len0 = 0;
511
512 struct pci_dev *pdev = adapter->pdev;
513 int pci_func = adapter->ahw.pci_func;
514
515 /*
516 * Set the CRB window to invalid. If any register in window 0 is
517 * accessed it should set the window to 0 and then reset it to 1.
518 */
519 adapter->ahw.crb_win = -1;
520 adapter->ahw.ocm_win = -1;
521
522 /* remap phys address */
523 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
524 mem_len = pci_resource_len(pdev, 0);
525
526 if (mem_len == QLCNIC_PCI_2MB_SIZE) {
527
528 mem_ptr0 = pci_ioremap_bar(pdev, 0);
529 if (mem_ptr0 == NULL) {
530 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
531 return -EIO;
532 }
533 pci_len0 = mem_len;
534 } else {
535 return -EIO;
536 }
537
538 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
539
540 adapter->ahw.pci_base0 = mem_ptr0;
541 adapter->ahw.pci_len0 = pci_len0;
542
543 adapter->ahw.ocm_win_crb = qlcnic_get_ioaddr(adapter,
544 QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
545
546 return 0;
547 }
548
549 static void get_brd_name(struct qlcnic_adapter *adapter, char *name)
550 {
551 struct pci_dev *pdev = adapter->pdev;
552 int i, found = 0;
553
554 for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
555 if (qlcnic_boards[i].vendor == pdev->vendor &&
556 qlcnic_boards[i].device == pdev->device &&
557 qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor &&
558 qlcnic_boards[i].sub_device == pdev->subsystem_device) {
559 strcpy(name, qlcnic_boards[i].short_name);
560 found = 1;
561 break;
562 }
563
564 }
565
566 if (!found)
567 name = "Unknown";
568 }
569
570 static void
571 qlcnic_check_options(struct qlcnic_adapter *adapter)
572 {
573 u32 fw_major, fw_minor, fw_build;
574 char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];
575 char serial_num[32];
576 int i, offset, val;
577 int *ptr32;
578 struct pci_dev *pdev = adapter->pdev;
579
580 adapter->driver_mismatch = 0;
581
582 ptr32 = (int *)&serial_num;
583 offset = QLCNIC_FW_SERIAL_NUM_OFFSET;
584 for (i = 0; i < 8; i++) {
585 if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) {
586 dev_err(&pdev->dev, "error reading board info\n");
587 adapter->driver_mismatch = 1;
588 return;
589 }
590 ptr32[i] = cpu_to_le32(val);
591 offset += sizeof(u32);
592 }
593
594 fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
595 fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
596 fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
597
598 adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build);
599
600 if (adapter->portnum == 0) {
601 get_brd_name(adapter, brd_name);
602
603 pr_info("%s: %s Board Chip rev 0x%x\n",
604 module_name(THIS_MODULE),
605 brd_name, adapter->ahw.revision_id);
606 }
607
608 if (adapter->fw_version < QLCNIC_VERSION_CODE(3, 4, 216)) {
609 adapter->driver_mismatch = 1;
610 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
611 fw_major, fw_minor, fw_build);
612 return;
613 }
614
615 i = QLCRD32(adapter, QLCNIC_SRE_MISC);
616 adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
617
618 dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
619 fw_major, fw_minor, fw_build,
620 adapter->ahw.cut_through ? "cut-through" : "legacy");
621
622 if (adapter->fw_version >= QLCNIC_VERSION_CODE(4, 0, 222))
623 adapter->capabilities = QLCRD32(adapter, CRB_FW_CAPABILITIES_1);
624
625 adapter->flags &= ~QLCNIC_LRO_ENABLED;
626
627 if (adapter->ahw.port_type == QLCNIC_XGBE) {
628 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
629 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
630 } else if (adapter->ahw.port_type == QLCNIC_GBE) {
631 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
632 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
633 }
634
635 adapter->msix_supported = !!use_msi_x;
636 adapter->rss_supported = !!use_msi_x;
637
638 adapter->num_txd = MAX_CMD_DESCRIPTORS;
639
640 adapter->num_lro_rxd = 0;
641 adapter->max_rds_rings = 2;
642 }
643
644 static int
645 qlcnic_start_firmware(struct qlcnic_adapter *adapter)
646 {
647 int val, err, first_boot;
648
649 err = qlcnic_set_dma_mask(adapter);
650 if (err)
651 return err;
652
653 err = qlcnic_can_start_firmware(adapter);
654 if (err < 0)
655 return err;
656 else if (!err)
657 goto wait_init;
658
659 first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
660 if (first_boot == 0x55555555)
661 /* This is the first boot after power up */
662 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
663
664 qlcnic_request_firmware(adapter);
665
666 err = qlcnic_need_fw_reset(adapter);
667 if (err < 0)
668 goto err_out;
669 if (err == 0)
670 goto wait_init;
671
672 if (first_boot != 0x55555555) {
673 QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
674 qlcnic_pinit_from_rom(adapter);
675 msleep(1);
676 }
677
678 QLCWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
679 QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
680 QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
681
682 qlcnic_set_port_mode(adapter);
683
684 err = qlcnic_load_firmware(adapter);
685 if (err)
686 goto err_out;
687
688 qlcnic_release_firmware(adapter);
689
690 val = (_QLCNIC_LINUX_MAJOR << 16)
691 | ((_QLCNIC_LINUX_MINOR << 8))
692 | (_QLCNIC_LINUX_SUBVERSION);
693 QLCWR32(adapter, CRB_DRIVER_VERSION, val);
694
695 wait_init:
696 /* Handshake with the card before we register the devices. */
697 err = qlcnic_phantom_init(adapter);
698 if (err)
699 goto err_out;
700
701 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
702
703 qlcnic_update_dma_mask(adapter);
704
705 qlcnic_check_options(adapter);
706
707 adapter->need_fw_reset = 0;
708
709 /* fall through and release firmware */
710
711 err_out:
712 qlcnic_release_firmware(adapter);
713 return err;
714 }
715
716 static int
717 qlcnic_request_irq(struct qlcnic_adapter *adapter)
718 {
719 irq_handler_t handler;
720 struct qlcnic_host_sds_ring *sds_ring;
721 int err, ring;
722
723 unsigned long flags = 0;
724 struct net_device *netdev = adapter->netdev;
725 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
726
727 if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
728 handler = qlcnic_tmp_intr;
729 if (!QLCNIC_IS_MSI_FAMILY(adapter))
730 flags |= IRQF_SHARED;
731
732 } else {
733 if (adapter->flags & QLCNIC_MSIX_ENABLED)
734 handler = qlcnic_msix_intr;
735 else if (adapter->flags & QLCNIC_MSI_ENABLED)
736 handler = qlcnic_msi_intr;
737 else {
738 flags |= IRQF_SHARED;
739 handler = qlcnic_intr;
740 }
741 }
742 adapter->irq = netdev->irq;
743
744 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
745 sds_ring = &recv_ctx->sds_rings[ring];
746 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
747 err = request_irq(sds_ring->irq, handler,
748 flags, sds_ring->name, sds_ring);
749 if (err)
750 return err;
751 }
752
753 return 0;
754 }
755
756 static void
757 qlcnic_free_irq(struct qlcnic_adapter *adapter)
758 {
759 int ring;
760 struct qlcnic_host_sds_ring *sds_ring;
761
762 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
763
764 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
765 sds_ring = &recv_ctx->sds_rings[ring];
766 free_irq(sds_ring->irq, sds_ring);
767 }
768 }
769
770 static void
771 qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
772 {
773 adapter->coal.flags = QLCNIC_INTR_DEFAULT;
774 adapter->coal.normal.data.rx_time_us =
775 QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
776 adapter->coal.normal.data.rx_packets =
777 QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
778 adapter->coal.normal.data.tx_time_us =
779 QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
780 adapter->coal.normal.data.tx_packets =
781 QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
782 }
783
784 static int
785 __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
786 {
787 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
788 return -EIO;
789
790 qlcnic_set_multi(netdev);
791 qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu);
792
793 adapter->ahw.linkup = 0;
794
795 if (adapter->max_sds_rings > 1)
796 qlcnic_config_rss(adapter, 1);
797
798 qlcnic_config_intr_coalesce(adapter);
799
800 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
801 qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
802
803 qlcnic_napi_enable(adapter);
804
805 qlcnic_linkevent_request(adapter, 1);
806
807 set_bit(__QLCNIC_DEV_UP, &adapter->state);
808 return 0;
809 }
810
811 /* Usage: During resume and firmware recovery module.*/
812
813 static int
814 qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
815 {
816 int err = 0;
817
818 rtnl_lock();
819 if (netif_running(netdev))
820 err = __qlcnic_up(adapter, netdev);
821 rtnl_unlock();
822
823 return err;
824 }
825
826 static void
827 __qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
828 {
829 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
830 return;
831
832 if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
833 return;
834
835 smp_mb();
836 spin_lock(&adapter->tx_clean_lock);
837 netif_carrier_off(netdev);
838 netif_tx_disable(netdev);
839
840 qlcnic_free_mac_list(adapter);
841
842 qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
843
844 qlcnic_napi_disable(adapter);
845
846 qlcnic_release_tx_buffers(adapter);
847 spin_unlock(&adapter->tx_clean_lock);
848 }
849
850 /* Usage: During suspend and firmware recovery module */
851
852 static void
853 qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
854 {
855 rtnl_lock();
856 if (netif_running(netdev))
857 __qlcnic_down(adapter, netdev);
858 rtnl_unlock();
859
860 }
861
862 static int
863 qlcnic_attach(struct qlcnic_adapter *adapter)
864 {
865 struct net_device *netdev = adapter->netdev;
866 struct pci_dev *pdev = adapter->pdev;
867 int err, ring;
868 struct qlcnic_host_rds_ring *rds_ring;
869
870 if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
871 return 0;
872
873 err = qlcnic_init_firmware(adapter);
874 if (err)
875 return err;
876
877 err = qlcnic_napi_add(adapter, netdev);
878 if (err)
879 return err;
880
881 err = qlcnic_alloc_sw_resources(adapter);
882 if (err) {
883 dev_err(&pdev->dev, "Error in setting sw resources\n");
884 return err;
885 }
886
887 err = qlcnic_alloc_hw_resources(adapter);
888 if (err) {
889 dev_err(&pdev->dev, "Error in setting hw resources\n");
890 goto err_out_free_sw;
891 }
892
893
894 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
895 rds_ring = &adapter->recv_ctx.rds_rings[ring];
896 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
897 }
898
899 err = qlcnic_request_irq(adapter);
900 if (err) {
901 dev_err(&pdev->dev, "failed to setup interrupt\n");
902 goto err_out_free_rxbuf;
903 }
904
905 qlcnic_init_coalesce_defaults(adapter);
906
907 qlcnic_create_sysfs_entries(adapter);
908
909 adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
910 return 0;
911
912 err_out_free_rxbuf:
913 qlcnic_release_rx_buffers(adapter);
914 qlcnic_free_hw_resources(adapter);
915 err_out_free_sw:
916 qlcnic_free_sw_resources(adapter);
917 return err;
918 }
919
920 static void
921 qlcnic_detach(struct qlcnic_adapter *adapter)
922 {
923 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
924 return;
925
926 qlcnic_remove_sysfs_entries(adapter);
927
928 qlcnic_free_hw_resources(adapter);
929 qlcnic_release_rx_buffers(adapter);
930 qlcnic_free_irq(adapter);
931 qlcnic_napi_del(adapter);
932 qlcnic_free_sw_resources(adapter);
933
934 adapter->is_up = 0;
935 }
936
937 void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
938 {
939 struct qlcnic_adapter *adapter = netdev_priv(netdev);
940 struct qlcnic_host_sds_ring *sds_ring;
941 int ring;
942
943 if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
944 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
945 sds_ring = &adapter->recv_ctx.sds_rings[ring];
946 qlcnic_disable_int(sds_ring);
947 }
948 }
949
950 qlcnic_detach(adapter);
951
952 adapter->diag_test = 0;
953 adapter->max_sds_rings = max_sds_rings;
954
955 if (qlcnic_attach(adapter))
956 goto out;
957
958 if (netif_running(netdev))
959 __qlcnic_up(adapter, netdev);
960 out:
961 netif_device_attach(netdev);
962 }
963
964 int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
965 {
966 struct qlcnic_adapter *adapter = netdev_priv(netdev);
967 struct qlcnic_host_sds_ring *sds_ring;
968 int ring;
969 int ret;
970
971 netif_device_detach(netdev);
972
973 if (netif_running(netdev))
974 __qlcnic_down(adapter, netdev);
975
976 qlcnic_detach(adapter);
977
978 adapter->max_sds_rings = 1;
979 adapter->diag_test = test;
980
981 ret = qlcnic_attach(adapter);
982 if (ret) {
983 netif_device_attach(netdev);
984 return ret;
985 }
986
987 if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
988 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
989 sds_ring = &adapter->recv_ctx.sds_rings[ring];
990 qlcnic_enable_int(sds_ring);
991 }
992 }
993
994 return 0;
995 }
996
997 int
998 qlcnic_reset_context(struct qlcnic_adapter *adapter)
999 {
1000 int err = 0;
1001 struct net_device *netdev = adapter->netdev;
1002
1003 if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1004 return -EBUSY;
1005
1006 if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
1007
1008 netif_device_detach(netdev);
1009
1010 if (netif_running(netdev))
1011 __qlcnic_down(adapter, netdev);
1012
1013 qlcnic_detach(adapter);
1014
1015 if (netif_running(netdev)) {
1016 err = qlcnic_attach(adapter);
1017 if (!err)
1018 __qlcnic_up(adapter, netdev);
1019 }
1020
1021 netif_device_attach(netdev);
1022 }
1023
1024 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1025 return err;
1026 }
1027
1028 static int
1029 qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
1030 struct net_device *netdev)
1031 {
1032 int err;
1033 struct pci_dev *pdev = adapter->pdev;
1034
1035 adapter->rx_csum = 1;
1036 adapter->mc_enabled = 0;
1037 adapter->max_mc_count = 38;
1038
1039 netdev->netdev_ops = &qlcnic_netdev_ops;
1040 netdev->watchdog_timeo = 2*HZ;
1041
1042 qlcnic_change_mtu(netdev, netdev->mtu);
1043
1044 SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
1045
1046 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1047 netdev->features |= (NETIF_F_GRO);
1048 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1049
1050 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1051 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1052
1053 if (adapter->pci_using_dac) {
1054 netdev->features |= NETIF_F_HIGHDMA;
1055 netdev->vlan_features |= NETIF_F_HIGHDMA;
1056 }
1057
1058 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
1059 netdev->features |= (NETIF_F_HW_VLAN_TX);
1060
1061 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
1062 netdev->features |= NETIF_F_LRO;
1063
1064 netdev->irq = adapter->msix_entries[0].vector;
1065
1066 INIT_WORK(&adapter->tx_timeout_task, qlcnic_tx_timeout_task);
1067
1068 if (qlcnic_read_mac_addr(adapter))
1069 dev_warn(&pdev->dev, "failed to read mac addr\n");
1070
1071 netif_carrier_off(netdev);
1072 netif_stop_queue(netdev);
1073
1074 err = register_netdev(netdev);
1075 if (err) {
1076 dev_err(&pdev->dev, "failed to register net device\n");
1077 return err;
1078 }
1079
1080 return 0;
1081 }
1082
1083 static int __devinit
1084 qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1085 {
1086 struct net_device *netdev = NULL;
1087 struct qlcnic_adapter *adapter = NULL;
1088 int err;
1089 int pci_func_id = PCI_FUNC(pdev->devfn);
1090 uint8_t revision_id;
1091
1092 err = pci_enable_device(pdev);
1093 if (err)
1094 return err;
1095
1096 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1097 err = -ENODEV;
1098 goto err_out_disable_pdev;
1099 }
1100
1101 err = pci_request_regions(pdev, qlcnic_driver_name);
1102 if (err)
1103 goto err_out_disable_pdev;
1104
1105 pci_set_master(pdev);
1106
1107 netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
1108 if (!netdev) {
1109 dev_err(&pdev->dev, "failed to allocate net_device\n");
1110 err = -ENOMEM;
1111 goto err_out_free_res;
1112 }
1113
1114 SET_NETDEV_DEV(netdev, &pdev->dev);
1115
1116 adapter = netdev_priv(netdev);
1117 adapter->netdev = netdev;
1118 adapter->pdev = pdev;
1119 adapter->ahw.pci_func = pci_func_id;
1120
1121 revision_id = pdev->revision;
1122 adapter->ahw.revision_id = revision_id;
1123
1124 rwlock_init(&adapter->ahw.crb_lock);
1125 mutex_init(&adapter->ahw.mem_lock);
1126
1127 spin_lock_init(&adapter->tx_clean_lock);
1128 INIT_LIST_HEAD(&adapter->mac_list);
1129
1130 err = qlcnic_setup_pci_map(adapter);
1131 if (err)
1132 goto err_out_free_netdev;
1133
1134 /* This will be reset for mezz cards */
1135 adapter->portnum = pci_func_id;
1136
1137 err = qlcnic_get_board_info(adapter);
1138 if (err) {
1139 dev_err(&pdev->dev, "Error getting board config info.\n");
1140 goto err_out_iounmap;
1141 }
1142
1143 qlcnic_setup_idc_param(adapter);
1144
1145 err = qlcnic_start_firmware(adapter);
1146 if (err)
1147 goto err_out_decr_ref;
1148
1149 /*
1150 * See if the firmware gave us a virtual-physical port mapping.
1151 */
1152 adapter->physical_port = adapter->portnum;
1153
1154 qlcnic_clear_stats(adapter);
1155
1156 qlcnic_setup_intr(adapter);
1157
1158 err = qlcnic_setup_netdev(adapter, netdev);
1159 if (err)
1160 goto err_out_disable_msi;
1161
1162 pci_set_drvdata(pdev, adapter);
1163
1164 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1165
1166 switch (adapter->ahw.port_type) {
1167 case QLCNIC_GBE:
1168 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1169 adapter->netdev->name);
1170 break;
1171 case QLCNIC_XGBE:
1172 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1173 adapter->netdev->name);
1174 break;
1175 }
1176
1177 qlcnic_create_diag_entries(adapter);
1178
1179 return 0;
1180
1181 err_out_disable_msi:
1182 qlcnic_teardown_intr(adapter);
1183
1184 err_out_decr_ref:
1185 qlcnic_clr_all_drv_state(adapter);
1186
1187 err_out_iounmap:
1188 qlcnic_cleanup_pci_map(adapter);
1189
1190 err_out_free_netdev:
1191 free_netdev(netdev);
1192
1193 err_out_free_res:
1194 pci_release_regions(pdev);
1195
1196 err_out_disable_pdev:
1197 pci_set_drvdata(pdev, NULL);
1198 pci_disable_device(pdev);
1199 return err;
1200 }
1201
1202 static void __devexit qlcnic_remove(struct pci_dev *pdev)
1203 {
1204 struct qlcnic_adapter *adapter;
1205 struct net_device *netdev;
1206
1207 adapter = pci_get_drvdata(pdev);
1208 if (adapter == NULL)
1209 return;
1210
1211 netdev = adapter->netdev;
1212
1213 qlcnic_cancel_fw_work(adapter);
1214
1215 unregister_netdev(netdev);
1216
1217 cancel_work_sync(&adapter->tx_timeout_task);
1218
1219 qlcnic_detach(adapter);
1220
1221 qlcnic_clr_all_drv_state(adapter);
1222
1223 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1224
1225 qlcnic_teardown_intr(adapter);
1226
1227 qlcnic_remove_diag_entries(adapter);
1228
1229 qlcnic_cleanup_pci_map(adapter);
1230
1231 qlcnic_release_firmware(adapter);
1232
1233 pci_release_regions(pdev);
1234 pci_disable_device(pdev);
1235 pci_set_drvdata(pdev, NULL);
1236
1237 free_netdev(netdev);
1238 }
1239 static int __qlcnic_shutdown(struct pci_dev *pdev)
1240 {
1241 struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1242 struct net_device *netdev = adapter->netdev;
1243 int retval;
1244
1245 netif_device_detach(netdev);
1246
1247 qlcnic_cancel_fw_work(adapter);
1248
1249 if (netif_running(netdev))
1250 qlcnic_down(adapter, netdev);
1251
1252 cancel_work_sync(&adapter->tx_timeout_task);
1253
1254 qlcnic_detach(adapter);
1255
1256 qlcnic_clr_all_drv_state(adapter);
1257
1258 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1259
1260 retval = pci_save_state(pdev);
1261 if (retval)
1262 return retval;
1263
1264 if (qlcnic_wol_supported(adapter)) {
1265 pci_enable_wake(pdev, PCI_D3cold, 1);
1266 pci_enable_wake(pdev, PCI_D3hot, 1);
1267 }
1268
1269 return 0;
1270 }
1271
1272 static void qlcnic_shutdown(struct pci_dev *pdev)
1273 {
1274 if (__qlcnic_shutdown(pdev))
1275 return;
1276
1277 pci_disable_device(pdev);
1278 }
1279
1280 #ifdef CONFIG_PM
1281 static int
1282 qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
1283 {
1284 int retval;
1285
1286 retval = __qlcnic_shutdown(pdev);
1287 if (retval)
1288 return retval;
1289
1290 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1291 return 0;
1292 }
1293
1294 static int
1295 qlcnic_resume(struct pci_dev *pdev)
1296 {
1297 struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1298 struct net_device *netdev = adapter->netdev;
1299 int err;
1300
1301 err = pci_enable_device(pdev);
1302 if (err)
1303 return err;
1304
1305 pci_set_power_state(pdev, PCI_D0);
1306 pci_set_master(pdev);
1307 pci_restore_state(pdev);
1308
1309 adapter->ahw.crb_win = -1;
1310 adapter->ahw.ocm_win = -1;
1311
1312 err = qlcnic_start_firmware(adapter);
1313 if (err) {
1314 dev_err(&pdev->dev, "failed to start firmware\n");
1315 return err;
1316 }
1317
1318 if (netif_running(netdev)) {
1319 err = qlcnic_attach(adapter);
1320 if (err)
1321 goto err_out;
1322
1323 err = qlcnic_up(adapter, netdev);
1324 if (err)
1325 goto err_out_detach;
1326
1327
1328 qlcnic_config_indev_addr(netdev, NETDEV_UP);
1329 }
1330
1331 netif_device_attach(netdev);
1332 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1333 return 0;
1334
1335 err_out_detach:
1336 qlcnic_detach(adapter);
1337 err_out:
1338 qlcnic_clr_all_drv_state(adapter);
1339 netif_device_attach(netdev);
1340 return err;
1341 }
1342 #endif
1343
1344 static int qlcnic_open(struct net_device *netdev)
1345 {
1346 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1347 int err;
1348
1349 if (adapter->driver_mismatch)
1350 return -EIO;
1351
1352 err = qlcnic_attach(adapter);
1353 if (err)
1354 return err;
1355
1356 err = __qlcnic_up(adapter, netdev);
1357 if (err)
1358 goto err_out;
1359
1360 netif_start_queue(netdev);
1361
1362 return 0;
1363
1364 err_out:
1365 qlcnic_detach(adapter);
1366 return err;
1367 }
1368
1369 /*
1370 * qlcnic_close - Disables a network interface entry point
1371 */
1372 static int qlcnic_close(struct net_device *netdev)
1373 {
1374 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1375
1376 __qlcnic_down(adapter, netdev);
1377 return 0;
1378 }
1379
1380 static void
1381 qlcnic_tso_check(struct net_device *netdev,
1382 struct qlcnic_host_tx_ring *tx_ring,
1383 struct cmd_desc_type0 *first_desc,
1384 struct sk_buff *skb)
1385 {
1386 u8 opcode = TX_ETHER_PKT;
1387 __be16 protocol = skb->protocol;
1388 u16 flags = 0, vid = 0;
1389 u32 producer;
1390 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1391 struct cmd_desc_type0 *hwdesc;
1392 struct vlan_ethhdr *vh;
1393 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1394
1395 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1396
1397 vh = (struct vlan_ethhdr *)skb->data;
1398 protocol = vh->h_vlan_encapsulated_proto;
1399 flags = FLAGS_VLAN_TAGGED;
1400
1401 } else if (vlan_tx_tag_present(skb)) {
1402
1403 flags = FLAGS_VLAN_OOB;
1404 vid = vlan_tx_tag_get(skb);
1405 qlcnic_set_tx_vlan_tci(first_desc, vid);
1406 vlan_oob = 1;
1407 }
1408
1409 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1410 skb_shinfo(skb)->gso_size > 0) {
1411
1412 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1413
1414 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1415 first_desc->total_hdr_length = hdr_len;
1416 if (vlan_oob) {
1417 first_desc->total_hdr_length += VLAN_HLEN;
1418 first_desc->tcp_hdr_offset = VLAN_HLEN;
1419 first_desc->ip_hdr_offset = VLAN_HLEN;
1420 /* Only in case of TSO on vlan device */
1421 flags |= FLAGS_VLAN_TAGGED;
1422 }
1423
1424 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1425 TX_TCP_LSO6 : TX_TCP_LSO;
1426 tso = 1;
1427
1428 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1429 u8 l4proto;
1430
1431 if (protocol == cpu_to_be16(ETH_P_IP)) {
1432 l4proto = ip_hdr(skb)->protocol;
1433
1434 if (l4proto == IPPROTO_TCP)
1435 opcode = TX_TCP_PKT;
1436 else if (l4proto == IPPROTO_UDP)
1437 opcode = TX_UDP_PKT;
1438 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1439 l4proto = ipv6_hdr(skb)->nexthdr;
1440
1441 if (l4proto == IPPROTO_TCP)
1442 opcode = TX_TCPV6_PKT;
1443 else if (l4proto == IPPROTO_UDP)
1444 opcode = TX_UDPV6_PKT;
1445 }
1446 }
1447
1448 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1449 first_desc->ip_hdr_offset += skb_network_offset(skb);
1450 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
1451
1452 if (!tso)
1453 return;
1454
1455 /* For LSO, we need to copy the MAC/IP/TCP headers into
1456 * the descriptor ring
1457 */
1458 producer = tx_ring->producer;
1459 copied = 0;
1460 offset = 2;
1461
1462 if (vlan_oob) {
1463 /* Create a TSO vlan header template for firmware */
1464
1465 hwdesc = &tx_ring->desc_head[producer];
1466 tx_ring->cmd_buf_arr[producer].skb = NULL;
1467
1468 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1469 hdr_len + VLAN_HLEN);
1470
1471 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1472 skb_copy_from_linear_data(skb, vh, 12);
1473 vh->h_vlan_proto = htons(ETH_P_8021Q);
1474 vh->h_vlan_TCI = htons(vid);
1475 skb_copy_from_linear_data_offset(skb, 12,
1476 (char *)vh + 16, copy_len - 16);
1477
1478 copied = copy_len - VLAN_HLEN;
1479 offset = 0;
1480
1481 producer = get_next_index(producer, tx_ring->num_desc);
1482 }
1483
1484 while (copied < hdr_len) {
1485
1486 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1487 (hdr_len - copied));
1488
1489 hwdesc = &tx_ring->desc_head[producer];
1490 tx_ring->cmd_buf_arr[producer].skb = NULL;
1491
1492 skb_copy_from_linear_data_offset(skb, copied,
1493 (char *)hwdesc + offset, copy_len);
1494
1495 copied += copy_len;
1496 offset = 0;
1497
1498 producer = get_next_index(producer, tx_ring->num_desc);
1499 }
1500
1501 tx_ring->producer = producer;
1502 barrier();
1503 adapter->stats.lso_frames++;
1504 }
1505
1506 static int
1507 qlcnic_map_tx_skb(struct pci_dev *pdev,
1508 struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
1509 {
1510 struct qlcnic_skb_frag *nf;
1511 struct skb_frag_struct *frag;
1512 int i, nr_frags;
1513 dma_addr_t map;
1514
1515 nr_frags = skb_shinfo(skb)->nr_frags;
1516 nf = &pbuf->frag_array[0];
1517
1518 map = pci_map_single(pdev, skb->data,
1519 skb_headlen(skb), PCI_DMA_TODEVICE);
1520 if (pci_dma_mapping_error(pdev, map))
1521 goto out_err;
1522
1523 nf->dma = map;
1524 nf->length = skb_headlen(skb);
1525
1526 for (i = 0; i < nr_frags; i++) {
1527 frag = &skb_shinfo(skb)->frags[i];
1528 nf = &pbuf->frag_array[i+1];
1529
1530 map = pci_map_page(pdev, frag->page, frag->page_offset,
1531 frag->size, PCI_DMA_TODEVICE);
1532 if (pci_dma_mapping_error(pdev, map))
1533 goto unwind;
1534
1535 nf->dma = map;
1536 nf->length = frag->size;
1537 }
1538
1539 return 0;
1540
1541 unwind:
1542 while (--i >= 0) {
1543 nf = &pbuf->frag_array[i+1];
1544 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1545 }
1546
1547 nf = &pbuf->frag_array[0];
1548 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1549
1550 out_err:
1551 return -ENOMEM;
1552 }
1553
1554 static inline void
1555 qlcnic_clear_cmddesc(u64 *desc)
1556 {
1557 desc[0] = 0ULL;
1558 desc[2] = 0ULL;
1559 }
1560
1561 netdev_tx_t
1562 qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1563 {
1564 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1565 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1566 struct qlcnic_cmd_buffer *pbuf;
1567 struct qlcnic_skb_frag *buffrag;
1568 struct cmd_desc_type0 *hwdesc, *first_desc;
1569 struct pci_dev *pdev;
1570 int i, k;
1571
1572 u32 producer;
1573 int frag_count, no_of_desc;
1574 u32 num_txd = tx_ring->num_desc;
1575
1576 frag_count = skb_shinfo(skb)->nr_frags + 1;
1577
1578 /* 4 fragments per cmd des */
1579 no_of_desc = (frag_count + 3) >> 2;
1580
1581 if (unlikely(no_of_desc + 2 > qlcnic_tx_avail(tx_ring))) {
1582 netif_stop_queue(netdev);
1583 adapter->stats.xmit_off++;
1584 return NETDEV_TX_BUSY;
1585 }
1586
1587 producer = tx_ring->producer;
1588 pbuf = &tx_ring->cmd_buf_arr[producer];
1589
1590 pdev = adapter->pdev;
1591
1592 if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
1593 adapter->stats.tx_dma_map_error++;
1594 goto drop_packet;
1595 }
1596
1597 pbuf->skb = skb;
1598 pbuf->frag_count = frag_count;
1599
1600 first_desc = hwdesc = &tx_ring->desc_head[producer];
1601 qlcnic_clear_cmddesc((u64 *)hwdesc);
1602
1603 qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
1604 qlcnic_set_tx_port(first_desc, adapter->portnum);
1605
1606 for (i = 0; i < frag_count; i++) {
1607
1608 k = i % 4;
1609
1610 if ((k == 0) && (i > 0)) {
1611 /* move to next desc.*/
1612 producer = get_next_index(producer, num_txd);
1613 hwdesc = &tx_ring->desc_head[producer];
1614 qlcnic_clear_cmddesc((u64 *)hwdesc);
1615 tx_ring->cmd_buf_arr[producer].skb = NULL;
1616 }
1617
1618 buffrag = &pbuf->frag_array[i];
1619
1620 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1621 switch (k) {
1622 case 0:
1623 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1624 break;
1625 case 1:
1626 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1627 break;
1628 case 2:
1629 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1630 break;
1631 case 3:
1632 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1633 break;
1634 }
1635 }
1636
1637 tx_ring->producer = get_next_index(producer, num_txd);
1638
1639 qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
1640
1641 qlcnic_update_cmd_producer(adapter, tx_ring);
1642
1643 adapter->stats.txbytes += skb->len;
1644 adapter->stats.xmitcalled++;
1645
1646 return NETDEV_TX_OK;
1647
1648 drop_packet:
1649 adapter->stats.txdropped++;
1650 dev_kfree_skb_any(skb);
1651 return NETDEV_TX_OK;
1652 }
1653
1654 static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
1655 {
1656 struct net_device *netdev = adapter->netdev;
1657 u32 temp, temp_state, temp_val;
1658 int rv = 0;
1659
1660 temp = QLCRD32(adapter, CRB_TEMP_STATE);
1661
1662 temp_state = qlcnic_get_temp_state(temp);
1663 temp_val = qlcnic_get_temp_val(temp);
1664
1665 if (temp_state == QLCNIC_TEMP_PANIC) {
1666 dev_err(&netdev->dev,
1667 "Device temperature %d degrees C exceeds"
1668 " maximum allowed. Hardware has been shut down.\n",
1669 temp_val);
1670 rv = 1;
1671 } else if (temp_state == QLCNIC_TEMP_WARN) {
1672 if (adapter->temp == QLCNIC_TEMP_NORMAL) {
1673 dev_err(&netdev->dev,
1674 "Device temperature %d degrees C "
1675 "exceeds operating range."
1676 " Immediate action needed.\n",
1677 temp_val);
1678 }
1679 } else {
1680 if (adapter->temp == QLCNIC_TEMP_WARN) {
1681 dev_info(&netdev->dev,
1682 "Device temperature is now %d degrees C"
1683 " in normal range.\n", temp_val);
1684 }
1685 }
1686 adapter->temp = temp_state;
1687 return rv;
1688 }
1689
1690 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
1691 {
1692 struct net_device *netdev = adapter->netdev;
1693
1694 if (adapter->ahw.linkup && !linkup) {
1695 dev_info(&netdev->dev, "NIC Link is down\n");
1696 adapter->ahw.linkup = 0;
1697 if (netif_running(netdev)) {
1698 netif_carrier_off(netdev);
1699 netif_stop_queue(netdev);
1700 }
1701 } else if (!adapter->ahw.linkup && linkup) {
1702 dev_info(&netdev->dev, "NIC Link is up\n");
1703 adapter->ahw.linkup = 1;
1704 if (netif_running(netdev)) {
1705 netif_carrier_on(netdev);
1706 netif_wake_queue(netdev);
1707 }
1708 }
1709 }
1710
1711 static void qlcnic_tx_timeout(struct net_device *netdev)
1712 {
1713 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1714
1715 if (test_bit(__QLCNIC_RESETTING, &adapter->state))
1716 return;
1717
1718 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1719 schedule_work(&adapter->tx_timeout_task);
1720 }
1721
1722 static void qlcnic_tx_timeout_task(struct work_struct *work)
1723 {
1724 struct qlcnic_adapter *adapter =
1725 container_of(work, struct qlcnic_adapter, tx_timeout_task);
1726
1727 if (!netif_running(adapter->netdev))
1728 return;
1729
1730 if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1731 return;
1732
1733 if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
1734 goto request_reset;
1735
1736 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1737 if (!qlcnic_reset_context(adapter)) {
1738 adapter->netdev->trans_start = jiffies;
1739 return;
1740
1741 /* context reset failed, fall through for fw reset */
1742 }
1743
1744 request_reset:
1745 adapter->need_fw_reset = 1;
1746 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1747 QLCDB(adapter, DRV, "Resetting adapter\n");
1748 }
1749
1750 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
1751 {
1752 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1753 struct net_device_stats *stats = &netdev->stats;
1754
1755 memset(stats, 0, sizeof(*stats));
1756
1757 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1758 stats->tx_packets = adapter->stats.xmitfinished;
1759 stats->rx_bytes = adapter->stats.rxbytes;
1760 stats->tx_bytes = adapter->stats.txbytes;
1761 stats->rx_dropped = adapter->stats.rxdropped;
1762 stats->tx_dropped = adapter->stats.txdropped;
1763
1764 return stats;
1765 }
1766
1767 static irqreturn_t qlcnic_clear_legacy_intr(struct qlcnic_adapter *adapter)
1768 {
1769 u32 status;
1770
1771 status = readl(adapter->isr_int_vec);
1772
1773 if (!(status & adapter->int_vec_bit))
1774 return IRQ_NONE;
1775
1776 /* check interrupt state machine, to be sure */
1777 status = readl(adapter->crb_int_state_reg);
1778 if (!ISR_LEGACY_INT_TRIGGERED(status))
1779 return IRQ_NONE;
1780
1781 writel(0xffffffff, adapter->tgt_status_reg);
1782 /* read twice to ensure write is flushed */
1783 readl(adapter->isr_int_vec);
1784 readl(adapter->isr_int_vec);
1785
1786 return IRQ_HANDLED;
1787 }
1788
1789 static irqreturn_t qlcnic_tmp_intr(int irq, void *data)
1790 {
1791 struct qlcnic_host_sds_ring *sds_ring = data;
1792 struct qlcnic_adapter *adapter = sds_ring->adapter;
1793
1794 if (adapter->flags & QLCNIC_MSIX_ENABLED)
1795 goto done;
1796 else if (adapter->flags & QLCNIC_MSI_ENABLED) {
1797 writel(0xffffffff, adapter->tgt_status_reg);
1798 goto done;
1799 }
1800
1801 if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1802 return IRQ_NONE;
1803
1804 done:
1805 adapter->diag_cnt++;
1806 qlcnic_enable_int(sds_ring);
1807 return IRQ_HANDLED;
1808 }
1809
1810 static irqreturn_t qlcnic_intr(int irq, void *data)
1811 {
1812 struct qlcnic_host_sds_ring *sds_ring = data;
1813 struct qlcnic_adapter *adapter = sds_ring->adapter;
1814
1815 if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1816 return IRQ_NONE;
1817
1818 napi_schedule(&sds_ring->napi);
1819
1820 return IRQ_HANDLED;
1821 }
1822
1823 static irqreturn_t qlcnic_msi_intr(int irq, void *data)
1824 {
1825 struct qlcnic_host_sds_ring *sds_ring = data;
1826 struct qlcnic_adapter *adapter = sds_ring->adapter;
1827
1828 /* clear interrupt */
1829 writel(0xffffffff, adapter->tgt_status_reg);
1830
1831 napi_schedule(&sds_ring->napi);
1832 return IRQ_HANDLED;
1833 }
1834
1835 static irqreturn_t qlcnic_msix_intr(int irq, void *data)
1836 {
1837 struct qlcnic_host_sds_ring *sds_ring = data;
1838
1839 napi_schedule(&sds_ring->napi);
1840 return IRQ_HANDLED;
1841 }
1842
1843 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
1844 {
1845 u32 sw_consumer, hw_consumer;
1846 int count = 0, i;
1847 struct qlcnic_cmd_buffer *buffer;
1848 struct pci_dev *pdev = adapter->pdev;
1849 struct net_device *netdev = adapter->netdev;
1850 struct qlcnic_skb_frag *frag;
1851 int done;
1852 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1853
1854 if (!spin_trylock(&adapter->tx_clean_lock))
1855 return 1;
1856
1857 sw_consumer = tx_ring->sw_consumer;
1858 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1859
1860 while (sw_consumer != hw_consumer) {
1861 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1862 if (buffer->skb) {
1863 frag = &buffer->frag_array[0];
1864 pci_unmap_single(pdev, frag->dma, frag->length,
1865 PCI_DMA_TODEVICE);
1866 frag->dma = 0ULL;
1867 for (i = 1; i < buffer->frag_count; i++) {
1868 frag++;
1869 pci_unmap_page(pdev, frag->dma, frag->length,
1870 PCI_DMA_TODEVICE);
1871 frag->dma = 0ULL;
1872 }
1873
1874 adapter->stats.xmitfinished++;
1875 dev_kfree_skb_any(buffer->skb);
1876 buffer->skb = NULL;
1877 }
1878
1879 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1880 if (++count >= MAX_STATUS_HANDLE)
1881 break;
1882 }
1883
1884 if (count && netif_running(netdev)) {
1885 tx_ring->sw_consumer = sw_consumer;
1886
1887 smp_mb();
1888
1889 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
1890 __netif_tx_lock(tx_ring->txq, smp_processor_id());
1891 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
1892 netif_wake_queue(netdev);
1893 adapter->tx_timeo_cnt = 0;
1894 adapter->stats.xmit_on++;
1895 }
1896 __netif_tx_unlock(tx_ring->txq);
1897 }
1898 }
1899 /*
1900 * If everything is freed up to consumer then check if the ring is full
1901 * If the ring is full then check if more needs to be freed and
1902 * schedule the call back again.
1903 *
1904 * This happens when there are 2 CPUs. One could be freeing and the
1905 * other filling it. If the ring is full when we get out of here and
1906 * the card has already interrupted the host then the host can miss the
1907 * interrupt.
1908 *
1909 * There is still a possible race condition and the host could miss an
1910 * interrupt. The card has to take care of this.
1911 */
1912 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1913 done = (sw_consumer == hw_consumer);
1914 spin_unlock(&adapter->tx_clean_lock);
1915
1916 return done;
1917 }
1918
1919 static int qlcnic_poll(struct napi_struct *napi, int budget)
1920 {
1921 struct qlcnic_host_sds_ring *sds_ring =
1922 container_of(napi, struct qlcnic_host_sds_ring, napi);
1923
1924 struct qlcnic_adapter *adapter = sds_ring->adapter;
1925
1926 int tx_complete;
1927 int work_done;
1928
1929 tx_complete = qlcnic_process_cmd_ring(adapter);
1930
1931 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
1932
1933 if ((work_done < budget) && tx_complete) {
1934 napi_complete(&sds_ring->napi);
1935 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
1936 qlcnic_enable_int(sds_ring);
1937 }
1938
1939 return work_done;
1940 }
1941
1942 #ifdef CONFIG_NET_POLL_CONTROLLER
1943 static void qlcnic_poll_controller(struct net_device *netdev)
1944 {
1945 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1946 disable_irq(adapter->irq);
1947 qlcnic_intr(adapter->irq, adapter);
1948 enable_irq(adapter->irq);
1949 }
1950 #endif
1951
1952 static void
1953 qlcnic_set_drv_state(struct qlcnic_adapter *adapter, int state)
1954 {
1955 u32 val;
1956
1957 WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
1958 state != QLCNIC_DEV_NEED_QUISCENT);
1959
1960 if (qlcnic_api_lock(adapter))
1961 return ;
1962
1963 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
1964
1965 if (state == QLCNIC_DEV_NEED_RESET)
1966 val |= ((u32)0x1 << (adapter->portnum * 4));
1967 else if (state == QLCNIC_DEV_NEED_QUISCENT)
1968 val |= ((u32)0x1 << ((adapter->portnum * 4) + 1));
1969
1970 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
1971
1972 qlcnic_api_unlock(adapter);
1973 }
1974
1975 static int
1976 qlcnic_clr_drv_state(struct qlcnic_adapter *adapter)
1977 {
1978 u32 val;
1979
1980 if (qlcnic_api_lock(adapter))
1981 return -EBUSY;
1982
1983 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
1984 val &= ~((u32)0x3 << (adapter->portnum * 4));
1985 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
1986
1987 qlcnic_api_unlock(adapter);
1988
1989 return 0;
1990 }
1991
1992 static void
1993 qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
1994 {
1995 u32 val;
1996
1997 if (qlcnic_api_lock(adapter))
1998 goto err;
1999
2000 val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2001 val &= ~((u32)0x1 << (adapter->portnum * 4));
2002 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2003
2004 if (!(val & 0x11111111))
2005 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
2006
2007 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2008 val &= ~((u32)0x3 << (adapter->portnum * 4));
2009 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2010
2011 qlcnic_api_unlock(adapter);
2012 err:
2013 adapter->fw_fail_cnt = 0;
2014 clear_bit(__QLCNIC_START_FW, &adapter->state);
2015 clear_bit(__QLCNIC_RESETTING, &adapter->state);
2016 }
2017
2018 /* Grab api lock, before checking state */
2019 static int
2020 qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
2021 {
2022 int act, state;
2023
2024 state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2025 act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2026
2027 if (((state & 0x11111111) == (act & 0x11111111)) ||
2028 ((act & 0x11111111) == ((state >> 1) & 0x11111111)))
2029 return 0;
2030 else
2031 return 1;
2032 }
2033
2034 static int
2035 qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
2036 {
2037 u32 val, prev_state;
2038 u8 dev_init_timeo = adapter->dev_init_timeo;
2039 int portnum = adapter->portnum;
2040
2041 if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state))
2042 return 1;
2043
2044 if (qlcnic_api_lock(adapter))
2045 return -1;
2046
2047 val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2048 if (!(val & ((int)0x1 << (portnum * 4)))) {
2049 val |= ((u32)0x1 << (portnum * 4));
2050 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2051 }
2052
2053 prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2054 QLCDB(adapter, HW, "Device state = %u\n", prev_state);
2055
2056 switch (prev_state) {
2057 case QLCNIC_DEV_COLD:
2058 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITIALIZING);
2059 qlcnic_api_unlock(adapter);
2060 return 1;
2061
2062 case QLCNIC_DEV_READY:
2063 qlcnic_api_unlock(adapter);
2064 return 0;
2065
2066 case QLCNIC_DEV_NEED_RESET:
2067 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2068 val |= ((u32)0x1 << (portnum * 4));
2069 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2070 break;
2071
2072 case QLCNIC_DEV_NEED_QUISCENT:
2073 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2074 val |= ((u32)0x1 << ((portnum * 4) + 1));
2075 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2076 break;
2077
2078 case QLCNIC_DEV_FAILED:
2079 qlcnic_api_unlock(adapter);
2080 return -1;
2081
2082 case QLCNIC_DEV_INITIALIZING:
2083 case QLCNIC_DEV_QUISCENT:
2084 break;
2085 }
2086
2087 qlcnic_api_unlock(adapter);
2088
2089 do {
2090 msleep(1000);
2091 } while ((QLCRD32(adapter, QLCNIC_CRB_DEV_STATE) != QLCNIC_DEV_READY)
2092 && --dev_init_timeo);
2093
2094 if (!dev_init_timeo) {
2095 dev_err(&adapter->pdev->dev,
2096 "Waiting for device to initialize timeout\n");
2097 return -1;
2098 }
2099
2100 if (qlcnic_api_lock(adapter))
2101 return -1;
2102
2103 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2104 val &= ~((u32)0x3 << (portnum * 4));
2105 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2106
2107 qlcnic_api_unlock(adapter);
2108
2109 return 0;
2110 }
2111
2112 static void
2113 qlcnic_fwinit_work(struct work_struct *work)
2114 {
2115 struct qlcnic_adapter *adapter = container_of(work,
2116 struct qlcnic_adapter, fw_work.work);
2117 u32 dev_state = 0xf;
2118
2119 if (qlcnic_api_lock(adapter))
2120 goto err_ret;
2121
2122 if (adapter->fw_wait_cnt++ > adapter->reset_ack_timeo) {
2123 dev_err(&adapter->pdev->dev, "Reset:Failed to get ack %d sec\n",
2124 adapter->reset_ack_timeo);
2125 goto skip_ack_check;
2126 }
2127
2128 if (!qlcnic_check_drv_state(adapter)) {
2129 skip_ack_check:
2130 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2131 if (dev_state == QLCNIC_DEV_NEED_RESET) {
2132 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2133 QLCNIC_DEV_INITIALIZING);
2134 set_bit(__QLCNIC_START_FW, &adapter->state);
2135 QLCDB(adapter, DRV, "Restarting fw\n");
2136 }
2137
2138 qlcnic_api_unlock(adapter);
2139
2140 if (!qlcnic_start_firmware(adapter)) {
2141 qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2142 return;
2143 }
2144 goto err_ret;
2145 }
2146
2147 qlcnic_api_unlock(adapter);
2148
2149 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2150 QLCDB(adapter, HW, "Func waiting: Device state=%u\n", dev_state);
2151
2152 switch (dev_state) {
2153 case QLCNIC_DEV_NEED_RESET:
2154 qlcnic_schedule_work(adapter,
2155 qlcnic_fwinit_work, FW_POLL_DELAY);
2156 return;
2157 case QLCNIC_DEV_FAILED:
2158 break;
2159
2160 default:
2161 if (!qlcnic_start_firmware(adapter)) {
2162 qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2163 return;
2164 }
2165 }
2166
2167 err_ret:
2168 dev_err(&adapter->pdev->dev, "Fwinit work failed state=%u "
2169 "fw_wait_cnt=%u\n", dev_state, adapter->fw_wait_cnt);
2170 netif_device_attach(adapter->netdev);
2171 qlcnic_clr_all_drv_state(adapter);
2172 }
2173
2174 static void
2175 qlcnic_detach_work(struct work_struct *work)
2176 {
2177 struct qlcnic_adapter *adapter = container_of(work,
2178 struct qlcnic_adapter, fw_work.work);
2179 struct net_device *netdev = adapter->netdev;
2180 u32 status;
2181
2182 netif_device_detach(netdev);
2183
2184 qlcnic_down(adapter, netdev);
2185
2186 rtnl_lock();
2187 qlcnic_detach(adapter);
2188 rtnl_unlock();
2189
2190 status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
2191
2192 if (status & QLCNIC_RCODE_FATAL_ERROR)
2193 goto err_ret;
2194
2195 if (adapter->temp == QLCNIC_TEMP_PANIC)
2196 goto err_ret;
2197
2198 qlcnic_set_drv_state(adapter, adapter->dev_state);
2199
2200 adapter->fw_wait_cnt = 0;
2201
2202 qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
2203
2204 return;
2205
2206 err_ret:
2207 dev_err(&adapter->pdev->dev, "detach failed; status=%d temp=%d\n",
2208 status, adapter->temp);
2209 netif_device_attach(netdev);
2210 qlcnic_clr_all_drv_state(adapter);
2211
2212 }
2213
2214 /*Transit to RESET state from READY state only */
2215 static void
2216 qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
2217 {
2218 u32 state;
2219
2220 if (qlcnic_api_lock(adapter))
2221 return;
2222
2223 state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2224
2225 if (state == QLCNIC_DEV_READY) {
2226 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
2227 QLCDB(adapter, DRV, "NEED_RESET state set\n");
2228 }
2229
2230 qlcnic_api_unlock(adapter);
2231 }
2232
2233 static void
2234 qlcnic_schedule_work(struct qlcnic_adapter *adapter,
2235 work_func_t func, int delay)
2236 {
2237 INIT_DELAYED_WORK(&adapter->fw_work, func);
2238 schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
2239 }
2240
2241 static void
2242 qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
2243 {
2244 while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
2245 msleep(10);
2246
2247 cancel_delayed_work_sync(&adapter->fw_work);
2248 }
2249
2250 static void
2251 qlcnic_attach_work(struct work_struct *work)
2252 {
2253 struct qlcnic_adapter *adapter = container_of(work,
2254 struct qlcnic_adapter, fw_work.work);
2255 struct net_device *netdev = adapter->netdev;
2256 int err;
2257
2258 if (netif_running(netdev)) {
2259 err = qlcnic_attach(adapter);
2260 if (err)
2261 goto done;
2262
2263 err = qlcnic_up(adapter, netdev);
2264 if (err) {
2265 qlcnic_detach(adapter);
2266 goto done;
2267 }
2268
2269 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2270 }
2271
2272 done:
2273 netif_device_attach(netdev);
2274 adapter->fw_fail_cnt = 0;
2275 clear_bit(__QLCNIC_RESETTING, &adapter->state);
2276
2277 if (!qlcnic_clr_drv_state(adapter))
2278 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2279 FW_POLL_DELAY);
2280 }
2281
2282 static int
2283 qlcnic_check_health(struct qlcnic_adapter *adapter)
2284 {
2285 u32 state = 0, heartbit;
2286 struct net_device *netdev = adapter->netdev;
2287
2288 if (qlcnic_check_temp(adapter))
2289 goto detach;
2290
2291 if (adapter->need_fw_reset) {
2292 qlcnic_dev_request_reset(adapter);
2293 goto detach;
2294 }
2295
2296 state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2297 if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
2298 adapter->need_fw_reset = 1;
2299
2300 heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
2301 if (heartbit != adapter->heartbit) {
2302 adapter->heartbit = heartbit;
2303 adapter->fw_fail_cnt = 0;
2304 if (adapter->need_fw_reset)
2305 goto detach;
2306 return 0;
2307 }
2308
2309 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2310 return 0;
2311
2312 qlcnic_dev_request_reset(adapter);
2313
2314 clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
2315
2316 dev_info(&netdev->dev, "firmware hang detected\n");
2317
2318 detach:
2319 adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
2320 QLCNIC_DEV_NEED_RESET;
2321
2322 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2323 !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) {
2324
2325 qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
2326 QLCDB(adapter, DRV, "fw recovery scheduled.\n");
2327 }
2328
2329 return 1;
2330 }
2331
2332 static void
2333 qlcnic_fw_poll_work(struct work_struct *work)
2334 {
2335 struct qlcnic_adapter *adapter = container_of(work,
2336 struct qlcnic_adapter, fw_work.work);
2337
2338 if (test_bit(__QLCNIC_RESETTING, &adapter->state))
2339 goto reschedule;
2340
2341
2342 if (qlcnic_check_health(adapter))
2343 return;
2344
2345 reschedule:
2346 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
2347 }
2348
2349 static ssize_t
2350 qlcnic_store_bridged_mode(struct device *dev,
2351 struct device_attribute *attr, const char *buf, size_t len)
2352 {
2353 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2354 unsigned long new;
2355 int ret = -EINVAL;
2356
2357 if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
2358 goto err_out;
2359
2360 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2361 goto err_out;
2362
2363 if (strict_strtoul(buf, 2, &new))
2364 goto err_out;
2365
2366 if (!qlcnic_config_bridged_mode(adapter, !!new))
2367 ret = len;
2368
2369 err_out:
2370 return ret;
2371 }
2372
2373 static ssize_t
2374 qlcnic_show_bridged_mode(struct device *dev,
2375 struct device_attribute *attr, char *buf)
2376 {
2377 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2378 int bridged_mode = 0;
2379
2380 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2381 bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
2382
2383 return sprintf(buf, "%d\n", bridged_mode);
2384 }
2385
2386 static struct device_attribute dev_attr_bridged_mode = {
2387 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2388 .show = qlcnic_show_bridged_mode,
2389 .store = qlcnic_store_bridged_mode,
2390 };
2391
2392 static ssize_t
2393 qlcnic_store_diag_mode(struct device *dev,
2394 struct device_attribute *attr, const char *buf, size_t len)
2395 {
2396 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2397 unsigned long new;
2398
2399 if (strict_strtoul(buf, 2, &new))
2400 return -EINVAL;
2401
2402 if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
2403 adapter->flags ^= QLCNIC_DIAG_ENABLED;
2404
2405 return len;
2406 }
2407
2408 static ssize_t
2409 qlcnic_show_diag_mode(struct device *dev,
2410 struct device_attribute *attr, char *buf)
2411 {
2412 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2413
2414 return sprintf(buf, "%d\n",
2415 !!(adapter->flags & QLCNIC_DIAG_ENABLED));
2416 }
2417
2418 static struct device_attribute dev_attr_diag_mode = {
2419 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2420 .show = qlcnic_show_diag_mode,
2421 .store = qlcnic_store_diag_mode,
2422 };
2423
2424 static int
2425 qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
2426 loff_t offset, size_t size)
2427 {
2428 size_t crb_size = 4;
2429
2430 if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2431 return -EIO;
2432
2433 if (offset < QLCNIC_PCI_CRBSPACE) {
2434 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM,
2435 QLCNIC_PCI_CAMQM_END))
2436 crb_size = 8;
2437 else
2438 return -EINVAL;
2439 }
2440
2441 if ((size != crb_size) || (offset & (crb_size-1)))
2442 return -EINVAL;
2443
2444 return 0;
2445 }
2446
2447 static ssize_t
2448 qlcnic_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
2449 char *buf, loff_t offset, size_t size)
2450 {
2451 struct device *dev = container_of(kobj, struct device, kobj);
2452 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2453 u32 data;
2454 u64 qmdata;
2455 int ret;
2456
2457 ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2458 if (ret != 0)
2459 return ret;
2460
2461 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2462 qlcnic_pci_camqm_read_2M(adapter, offset, &qmdata);
2463 memcpy(buf, &qmdata, size);
2464 } else {
2465 data = QLCRD32(adapter, offset);
2466 memcpy(buf, &data, size);
2467 }
2468 return size;
2469 }
2470
2471 static ssize_t
2472 qlcnic_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
2473 char *buf, loff_t offset, size_t size)
2474 {
2475 struct device *dev = container_of(kobj, struct device, kobj);
2476 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2477 u32 data;
2478 u64 qmdata;
2479 int ret;
2480
2481 ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2482 if (ret != 0)
2483 return ret;
2484
2485 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2486 memcpy(&qmdata, buf, size);
2487 qlcnic_pci_camqm_write_2M(adapter, offset, qmdata);
2488 } else {
2489 memcpy(&data, buf, size);
2490 QLCWR32(adapter, offset, data);
2491 }
2492 return size;
2493 }
2494
2495 static int
2496 qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
2497 loff_t offset, size_t size)
2498 {
2499 if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2500 return -EIO;
2501
2502 if ((size != 8) || (offset & 0x7))
2503 return -EIO;
2504
2505 return 0;
2506 }
2507
2508 static ssize_t
2509 qlcnic_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
2510 char *buf, loff_t offset, size_t size)
2511 {
2512 struct device *dev = container_of(kobj, struct device, kobj);
2513 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2514 u64 data;
2515 int ret;
2516
2517 ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2518 if (ret != 0)
2519 return ret;
2520
2521 if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
2522 return -EIO;
2523
2524 memcpy(buf, &data, size);
2525
2526 return size;
2527 }
2528
2529 static ssize_t
2530 qlcnic_sysfs_write_mem(struct kobject *kobj, struct bin_attribute *attr,
2531 char *buf, loff_t offset, size_t size)
2532 {
2533 struct device *dev = container_of(kobj, struct device, kobj);
2534 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2535 u64 data;
2536 int ret;
2537
2538 ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2539 if (ret != 0)
2540 return ret;
2541
2542 memcpy(&data, buf, size);
2543
2544 if (qlcnic_pci_mem_write_2M(adapter, offset, data))
2545 return -EIO;
2546
2547 return size;
2548 }
2549
2550
2551 static struct bin_attribute bin_attr_crb = {
2552 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2553 .size = 0,
2554 .read = qlcnic_sysfs_read_crb,
2555 .write = qlcnic_sysfs_write_crb,
2556 };
2557
2558 static struct bin_attribute bin_attr_mem = {
2559 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2560 .size = 0,
2561 .read = qlcnic_sysfs_read_mem,
2562 .write = qlcnic_sysfs_write_mem,
2563 };
2564
2565 static void
2566 qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
2567 {
2568 struct device *dev = &adapter->pdev->dev;
2569
2570 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2571 if (device_create_file(dev, &dev_attr_bridged_mode))
2572 dev_warn(dev,
2573 "failed to create bridged_mode sysfs entry\n");
2574 }
2575
2576 static void
2577 qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
2578 {
2579 struct device *dev = &adapter->pdev->dev;
2580
2581 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2582 device_remove_file(dev, &dev_attr_bridged_mode);
2583 }
2584
2585 static void
2586 qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
2587 {
2588 struct device *dev = &adapter->pdev->dev;
2589
2590 if (device_create_file(dev, &dev_attr_diag_mode))
2591 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2592 if (device_create_bin_file(dev, &bin_attr_crb))
2593 dev_info(dev, "failed to create crb sysfs entry\n");
2594 if (device_create_bin_file(dev, &bin_attr_mem))
2595 dev_info(dev, "failed to create mem sysfs entry\n");
2596 }
2597
2598
2599 static void
2600 qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
2601 {
2602 struct device *dev = &adapter->pdev->dev;
2603
2604 device_remove_file(dev, &dev_attr_diag_mode);
2605 device_remove_bin_file(dev, &bin_attr_crb);
2606 device_remove_bin_file(dev, &bin_attr_mem);
2607 }
2608
2609 #ifdef CONFIG_INET
2610
2611 #define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
2612
2613 static int
2614 qlcnic_destip_supported(struct qlcnic_adapter *adapter)
2615 {
2616 if (adapter->ahw.cut_through)
2617 return 0;
2618
2619 return 1;
2620 }
2621
2622 static void
2623 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2624 {
2625 struct in_device *indev;
2626 struct qlcnic_adapter *adapter = netdev_priv(dev);
2627
2628 if (!qlcnic_destip_supported(adapter))
2629 return;
2630
2631 indev = in_dev_get(dev);
2632 if (!indev)
2633 return;
2634
2635 for_ifa(indev) {
2636 switch (event) {
2637 case NETDEV_UP:
2638 qlcnic_config_ipaddr(adapter,
2639 ifa->ifa_address, QLCNIC_IP_UP);
2640 break;
2641 case NETDEV_DOWN:
2642 qlcnic_config_ipaddr(adapter,
2643 ifa->ifa_address, QLCNIC_IP_DOWN);
2644 break;
2645 default:
2646 break;
2647 }
2648 } endfor_ifa(indev);
2649
2650 in_dev_put(indev);
2651 return;
2652 }
2653
2654 static int qlcnic_netdev_event(struct notifier_block *this,
2655 unsigned long event, void *ptr)
2656 {
2657 struct qlcnic_adapter *adapter;
2658 struct net_device *dev = (struct net_device *)ptr;
2659
2660 recheck:
2661 if (dev == NULL)
2662 goto done;
2663
2664 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2665 dev = vlan_dev_real_dev(dev);
2666 goto recheck;
2667 }
2668
2669 if (!is_qlcnic_netdev(dev))
2670 goto done;
2671
2672 adapter = netdev_priv(dev);
2673
2674 if (!adapter)
2675 goto done;
2676
2677 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2678 goto done;
2679
2680 qlcnic_config_indev_addr(dev, event);
2681 done:
2682 return NOTIFY_DONE;
2683 }
2684
2685 static int
2686 qlcnic_inetaddr_event(struct notifier_block *this,
2687 unsigned long event, void *ptr)
2688 {
2689 struct qlcnic_adapter *adapter;
2690 struct net_device *dev;
2691
2692 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2693
2694 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2695
2696 recheck:
2697 if (dev == NULL || !netif_running(dev))
2698 goto done;
2699
2700 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2701 dev = vlan_dev_real_dev(dev);
2702 goto recheck;
2703 }
2704
2705 if (!is_qlcnic_netdev(dev))
2706 goto done;
2707
2708 adapter = netdev_priv(dev);
2709
2710 if (!adapter || !qlcnic_destip_supported(adapter))
2711 goto done;
2712
2713 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2714 goto done;
2715
2716 switch (event) {
2717 case NETDEV_UP:
2718 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
2719 break;
2720 case NETDEV_DOWN:
2721 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
2722 break;
2723 default:
2724 break;
2725 }
2726
2727 done:
2728 return NOTIFY_DONE;
2729 }
2730
2731 static struct notifier_block qlcnic_netdev_cb = {
2732 .notifier_call = qlcnic_netdev_event,
2733 };
2734
2735 static struct notifier_block qlcnic_inetaddr_cb = {
2736 .notifier_call = qlcnic_inetaddr_event,
2737 };
2738 #else
2739 static void
2740 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2741 { }
2742 #endif
2743
2744 static struct pci_driver qlcnic_driver = {
2745 .name = qlcnic_driver_name,
2746 .id_table = qlcnic_pci_tbl,
2747 .probe = qlcnic_probe,
2748 .remove = __devexit_p(qlcnic_remove),
2749 #ifdef CONFIG_PM
2750 .suspend = qlcnic_suspend,
2751 .resume = qlcnic_resume,
2752 #endif
2753 .shutdown = qlcnic_shutdown
2754 };
2755
2756 static int __init qlcnic_init_module(void)
2757 {
2758
2759 printk(KERN_INFO "%s\n", qlcnic_driver_string);
2760
2761 #ifdef CONFIG_INET
2762 register_netdevice_notifier(&qlcnic_netdev_cb);
2763 register_inetaddr_notifier(&qlcnic_inetaddr_cb);
2764 #endif
2765
2766
2767 return pci_register_driver(&qlcnic_driver);
2768 }
2769
2770 module_init(qlcnic_init_module);
2771
2772 static void __exit qlcnic_exit_module(void)
2773 {
2774
2775 pci_unregister_driver(&qlcnic_driver);
2776
2777 #ifdef CONFIG_INET
2778 unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
2779 unregister_netdevice_notifier(&qlcnic_netdev_cb);
2780 #endif
2781 }
2782
2783 module_exit(qlcnic_exit_module);
Linux kernel - Deliverables
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