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qlcnic: support quisce mode
[deliverable/linux.git] / drivers / net / qlcnic / qlcnic_main.c
CommitLineData
af19b491
AKS		 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
5a0e3ad6 25#include <linux/slab.h>
af19b491
AKS		 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
38MODULE_DESCRIPTION("QLogic 10 GbE Converged Ethernet Driver");
39MODULE_LICENSE("GPL");
40MODULE_VERSION(QLCNIC_LINUX_VERSIONID);
41MODULE_FIRMWARE(QLCNIC_UNIFIED_ROMIMAGE_NAME);
42
43char qlcnic_driver_name[] = "qlcnic";
44static const char qlcnic_driver_string[] = "QLogic Converged Ethernet Driver v"
45 QLCNIC_LINUX_VERSIONID;
46
47static int port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
48
49/* Default to restricted 1G auto-neg mode */
50static int wol_port_mode = 5;
51
52static int use_msi = 1;
53module_param(use_msi, int, 0644);
54MODULE_PARM_DESC(use_msi, "MSI interrupt (0=disabled, 1=enabled");
55
56static int use_msi_x = 1;
57module_param(use_msi_x, int, 0644);
58MODULE_PARM_DESC(use_msi_x, "MSI-X interrupt (0=disabled, 1=enabled");
59
60static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
61module_param(auto_fw_reset, int, 0644);
62MODULE_PARM_DESC(auto_fw_reset, "Auto firmware reset (0=disabled, 1=enabled");
63
64static int __devinit qlcnic_probe(struct pci_dev *pdev,
65 const struct pci_device_id *ent);
66static void __devexit qlcnic_remove(struct pci_dev *pdev);
67static int qlcnic_open(struct net_device *netdev);
68static int qlcnic_close(struct net_device *netdev);
af19b491
AKS		 69static void qlcnic_tx_timeout(struct net_device *netdev);
70static void qlcnic_tx_timeout_task(struct work_struct *work);
71static void qlcnic_attach_work(struct work_struct *work);
72static void qlcnic_fwinit_work(struct work_struct *work);
73static void qlcnic_fw_poll_work(struct work_struct *work);
74static void qlcnic_schedule_work(struct qlcnic_adapter *adapter,
75 work_func_t func, int delay);
76static void qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter);
77static int qlcnic_poll(struct napi_struct *napi, int budget);
78#ifdef CONFIG_NET_POLL_CONTROLLER
79static void qlcnic_poll_controller(struct net_device *netdev);
80#endif
81
82static void qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter);
83static void qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter);
84static void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter);
85static void qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter);
86
87static void qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter);
88static int qlcnic_can_start_firmware(struct qlcnic_adapter *adapter);
89
7eb9855d 90static irqreturn_t qlcnic_tmp_intr(int irq, void *data);
af19b491
AKS		 91static irqreturn_t qlcnic_intr(int irq, void *data);
92static irqreturn_t qlcnic_msi_intr(int irq, void *data);
93static irqreturn_t qlcnic_msix_intr(int irq, void *data);
94
95static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev);
96static 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
6a902881 105static DEFINE_PCI_DEVICE_TABLE(qlcnic_pci_tbl) = {
af19b491
AKS		 106 ENTRY(PCI_DEVICE_ID_QLOGIC_QLE824X),
107 {0,}
108};
109
110MODULE_DEVICE_TABLE(pci, qlcnic_pci_tbl);
111
112
113void
114qlcnic_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();
8bfe8b91 122 adapter->stats.xmit_off++;
af19b491
AKS		 123 }
124}
125
126static 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
133static const
134struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG;
135
136static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring)
137{
138 writel(0, sds_ring->crb_intr_mask);
139}
140
141static 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
151static int
152qlcnic_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
161static void
162qlcnic_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
170static int
171qlcnic_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
189static void
190qlcnic_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
204static void
205qlcnic_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
780ab790
AKS		 211 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
212 return;
213
af19b491
AKS		 214 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
215 sds_ring = &recv_ctx->sds_rings[ring];
216 napi_enable(&sds_ring->napi);
217 qlcnic_enable_int(sds_ring);
218 }
219}
220
221static void
222qlcnic_napi_disable(struct qlcnic_adapter *adapter)
223{
224 int ring;
225 struct qlcnic_host_sds_ring *sds_ring;
226 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
227
780ab790
AKS		 228 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
229 return;
230
af19b491
AKS		 231 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
232 sds_ring = &recv_ctx->sds_rings[ring];
233 qlcnic_disable_int(sds_ring);
234 napi_synchronize(&sds_ring->napi);
235 napi_disable(&sds_ring->napi);
236 }
237}
238
239static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
240{
241 memset(&adapter->stats, 0, sizeof(adapter->stats));
af19b491
AKS		 242}
243
af19b491
AKS		 244static void qlcnic_set_port_mode(struct qlcnic_adapter *adapter)
245{
246 u32 val, data;
247
248 val = adapter->ahw.board_type;
249 if ((val == QLCNIC_BRDTYPE_P3_HMEZ) ||
250 (val == QLCNIC_BRDTYPE_P3_XG_LOM)) {
251 if (port_mode == QLCNIC_PORT_MODE_802_3_AP) {
252 data = QLCNIC_PORT_MODE_802_3_AP;
253 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
254 } else if (port_mode == QLCNIC_PORT_MODE_XG) {
255 data = QLCNIC_PORT_MODE_XG;
256 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
257 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_1G) {
258 data = QLCNIC_PORT_MODE_AUTO_NEG_1G;
259 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
260 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_XG) {
261 data = QLCNIC_PORT_MODE_AUTO_NEG_XG;
262 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
263 } else {
264 data = QLCNIC_PORT_MODE_AUTO_NEG;
265 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
266 }
267
268 if ((wol_port_mode != QLCNIC_PORT_MODE_802_3_AP) &&
269 (wol_port_mode != QLCNIC_PORT_MODE_XG) &&
270 (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_1G) &&
271 (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_XG)) {
272 wol_port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
273 }
274 QLCWR32(adapter, QLCNIC_WOL_PORT_MODE, wol_port_mode);
275 }
276}
277
278static void qlcnic_set_msix_bit(struct pci_dev *pdev, int enable)
279{
280 u32 control;
281 int pos;
282
283 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
284 if (pos) {
285 pci_read_config_dword(pdev, pos, &control);
286 if (enable)
287 control |= PCI_MSIX_FLAGS_ENABLE;
288 else
289 control = 0;
290 pci_write_config_dword(pdev, pos, control);
291 }
292}
293
294static void qlcnic_init_msix_entries(struct qlcnic_adapter *adapter, int count)
295{
296 int i;
297
298 for (i = 0; i < count; i++)
299 adapter->msix_entries[i].entry = i;
300}
301
302static int
303qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
304{
305 int i;
306 unsigned char *p;
307 u64 mac_addr;
308 struct net_device *netdev = adapter->netdev;
309 struct pci_dev *pdev = adapter->pdev;
310
311 if (qlcnic_get_mac_addr(adapter, &mac_addr) != 0)
312 return -EIO;
313
314 p = (unsigned char *)&mac_addr;
315 for (i = 0; i < 6; i++)
316 netdev->dev_addr[i] = *(p + 5 - i);
317
318 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
319 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
320
321 /* set station address */
322
323 if (!is_valid_ether_addr(netdev->perm_addr))
324 dev_warn(&pdev->dev, "Bad MAC address %pM.\n",
325 netdev->dev_addr);
326
327 return 0;
328}
329
330static int qlcnic_set_mac(struct net_device *netdev, void *p)
331{
332 struct qlcnic_adapter *adapter = netdev_priv(netdev);
333 struct sockaddr *addr = p;
334
335 if (!is_valid_ether_addr(addr->sa_data))
336 return -EINVAL;
337
338 if (netif_running(netdev)) {
339 netif_device_detach(netdev);
340 qlcnic_napi_disable(adapter);
341 }
342
343 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
344 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
345 qlcnic_set_multi(adapter->netdev);
346
347 if (netif_running(netdev)) {
348 netif_device_attach(netdev);
349 qlcnic_napi_enable(adapter);
350 }
351 return 0;
352}
353
354static const struct net_device_ops qlcnic_netdev_ops = {
355 .ndo_open = qlcnic_open,
356 .ndo_stop = qlcnic_close,
357 .ndo_start_xmit = qlcnic_xmit_frame,
358 .ndo_get_stats = qlcnic_get_stats,
359 .ndo_validate_addr = eth_validate_addr,
360 .ndo_set_multicast_list = qlcnic_set_multi,
361 .ndo_set_mac_address = qlcnic_set_mac,
362 .ndo_change_mtu = qlcnic_change_mtu,
363 .ndo_tx_timeout = qlcnic_tx_timeout,
364#ifdef CONFIG_NET_POLL_CONTROLLER
365 .ndo_poll_controller = qlcnic_poll_controller,
366#endif
367};
368
369static void
370qlcnic_setup_intr(struct qlcnic_adapter *adapter)
371{
372 const struct qlcnic_legacy_intr_set *legacy_intrp;
373 struct pci_dev *pdev = adapter->pdev;
374 int err, num_msix;
375
376 if (adapter->rss_supported) {
377 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
378 MSIX_ENTRIES_PER_ADAPTER : 2;
379 } else
380 num_msix = 1;
381
382 adapter->max_sds_rings = 1;
383
384 adapter->flags &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED);
385
386 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
387
388 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
389 adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
390 legacy_intrp->tgt_status_reg);
391 adapter->tgt_mask_reg = qlcnic_get_ioaddr(adapter,
392 legacy_intrp->tgt_mask_reg);
393 adapter->isr_int_vec = qlcnic_get_ioaddr(adapter, ISR_INT_VECTOR);
394
395 adapter->crb_int_state_reg = qlcnic_get_ioaddr(adapter,
396 ISR_INT_STATE_REG);
397
398 qlcnic_set_msix_bit(pdev, 0);
399
400 if (adapter->msix_supported) {
401
402 qlcnic_init_msix_entries(adapter, num_msix);
403 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
404 if (err == 0) {
405 adapter->flags |= QLCNIC_MSIX_ENABLED;
406 qlcnic_set_msix_bit(pdev, 1);
407
408 if (adapter->rss_supported)
409 adapter->max_sds_rings = num_msix;
410
411 dev_info(&pdev->dev, "using msi-x interrupts\n");
412 return;
413 }
414
415 if (err > 0)
416 pci_disable_msix(pdev);
417
418 /* fall through for msi */
419 }
420
421 if (use_msi && !pci_enable_msi(pdev)) {
422 adapter->flags |= QLCNIC_MSI_ENABLED;
423 adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
424 msi_tgt_status[adapter->ahw.pci_func]);
425 dev_info(&pdev->dev, "using msi interrupts\n");
426 adapter->msix_entries[0].vector = pdev->irq;
427 return;
428 }
429
430 dev_info(&pdev->dev, "using legacy interrupts\n");
431 adapter->msix_entries[0].vector = pdev->irq;
432}
433
434static void
435qlcnic_teardown_intr(struct qlcnic_adapter *adapter)
436{
437 if (adapter->flags & QLCNIC_MSIX_ENABLED)
438 pci_disable_msix(adapter->pdev);
439 if (adapter->flags & QLCNIC_MSI_ENABLED)
440 pci_disable_msi(adapter->pdev);
441}
442
443static void
444qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter)
445{
446 if (adapter->ahw.pci_base0 != NULL)
447 iounmap(adapter->ahw.pci_base0);
448}
449
450static int
451qlcnic_setup_pci_map(struct qlcnic_adapter *adapter)
452{
453 void __iomem *mem_ptr0 = NULL;
454 resource_size_t mem_base;
455 unsigned long mem_len, pci_len0 = 0;
456
457 struct pci_dev *pdev = adapter->pdev;
458 int pci_func = adapter->ahw.pci_func;
459
af19b491
AKS		 460 /* remap phys address */
461 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
462 mem_len = pci_resource_len(pdev, 0);
463
464 if (mem_len == QLCNIC_PCI_2MB_SIZE) {
465
466 mem_ptr0 = pci_ioremap_bar(pdev, 0);
467 if (mem_ptr0 == NULL) {
468 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
469 return -EIO;
470 }
471 pci_len0 = mem_len;
472 } else {
473 return -EIO;
474 }
475
476 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
477
478 adapter->ahw.pci_base0 = mem_ptr0;
479 adapter->ahw.pci_len0 = pci_len0;
480
481 adapter->ahw.ocm_win_crb = qlcnic_get_ioaddr(adapter,
482 QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
483
484 return 0;
485}
486
487static void get_brd_name(struct qlcnic_adapter *adapter, char *name)
488{
489 struct pci_dev *pdev = adapter->pdev;
490 int i, found = 0;
491
492 for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
493 if (qlcnic_boards[i].vendor == pdev->vendor &&
494 qlcnic_boards[i].device == pdev->device &&
495 qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor &&
496 qlcnic_boards[i].sub_device == pdev->subsystem_device) {
497 strcpy(name, qlcnic_boards[i].short_name);
498 found = 1;
499 break;
500 }
501
502 }
503
504 if (!found)
505 name = "Unknown";
506}
507
508static void
509qlcnic_check_options(struct qlcnic_adapter *adapter)
510{
511 u32 fw_major, fw_minor, fw_build;
512 char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];
513 char serial_num[32];
514 int i, offset, val;
515 int *ptr32;
516 struct pci_dev *pdev = adapter->pdev;
517
518 adapter->driver_mismatch = 0;
519
520 ptr32 = (int *)&serial_num;
521 offset = QLCNIC_FW_SERIAL_NUM_OFFSET;
522 for (i = 0; i < 8; i++) {
523 if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) {
524 dev_err(&pdev->dev, "error reading board info\n");
525 adapter->driver_mismatch = 1;
526 return;
527 }
528 ptr32[i] = cpu_to_le32(val);
529 offset += sizeof(u32);
530 }
531
532 fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
533 fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
534 fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
535
536 adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build);
537
538 if (adapter->portnum == 0) {
539 get_brd_name(adapter, brd_name);
540
541 pr_info("%s: %s Board Chip rev 0x%x\n",
542 module_name(THIS_MODULE),
543 brd_name, adapter->ahw.revision_id);
544 }
545
251a84c9
AKS		 546 dev_info(&pdev->dev, "firmware v%d.%d.%d\n",
547 fw_major, fw_minor, fw_build);
af19b491 548
251a84c9 549 adapter->capabilities = QLCRD32(adapter, CRB_FW_CAPABILITIES_1);
af19b491
AKS		 550
551 adapter->flags &= ~QLCNIC_LRO_ENABLED;
552
553 if (adapter->ahw.port_type == QLCNIC_XGBE) {
554 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
555 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
556 } else if (adapter->ahw.port_type == QLCNIC_GBE) {
557 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
558 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
559 }
560
561 adapter->msix_supported = !!use_msi_x;
562 adapter->rss_supported = !!use_msi_x;
563
564 adapter->num_txd = MAX_CMD_DESCRIPTORS;
565
af19b491
AKS		 566 adapter->max_rds_rings = 2;
567}
568
569static int
570qlcnic_start_firmware(struct qlcnic_adapter *adapter)
571{
572 int val, err, first_boot;
573
aa5e18c0
SC		 574 err = qlcnic_can_start_firmware(adapter);
575 if (err < 0)
576 return err;
577 else if (!err)
af19b491
AKS		 578 goto wait_init;
579
580 first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
581 if (first_boot == 0x55555555)
582 /* This is the first boot after power up */
583 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
584
585 qlcnic_request_firmware(adapter);
586
587 err = qlcnic_need_fw_reset(adapter);
588 if (err < 0)
589 goto err_out;
590 if (err == 0)
591 goto wait_init;
592
593 if (first_boot != 0x55555555) {
594 QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
595 qlcnic_pinit_from_rom(adapter);
596 msleep(1);
597 }
598
599 QLCWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
600 QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
601 QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
602
603 qlcnic_set_port_mode(adapter);
604
605 err = qlcnic_load_firmware(adapter);
606 if (err)
607 goto err_out;
608
609 qlcnic_release_firmware(adapter);
610
611 val = (_QLCNIC_LINUX_MAJOR << 16)
612 | ((_QLCNIC_LINUX_MINOR << 8))
613 | (_QLCNIC_LINUX_SUBVERSION);
614 QLCWR32(adapter, CRB_DRIVER_VERSION, val);
615
616wait_init:
617 /* Handshake with the card before we register the devices. */
618 err = qlcnic_phantom_init(adapter);
619 if (err)
620 goto err_out;
621
622 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
623
af19b491
AKS		 624 qlcnic_check_options(adapter);
625
626 adapter->need_fw_reset = 0;
627
628 /* fall through and release firmware */
629
630err_out:
631 qlcnic_release_firmware(adapter);
632 return err;
633}
634
635static int
636qlcnic_request_irq(struct qlcnic_adapter *adapter)
637{
638 irq_handler_t handler;
639 struct qlcnic_host_sds_ring *sds_ring;
640 int err, ring;
641
642 unsigned long flags = 0;
643 struct net_device *netdev = adapter->netdev;
644 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
645
7eb9855d
AKS		 646 if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
647 handler = qlcnic_tmp_intr;
648 if (!QLCNIC_IS_MSI_FAMILY(adapter))
649 flags |= IRQF_SHARED;
650
651 } else {
652 if (adapter->flags & QLCNIC_MSIX_ENABLED)
653 handler = qlcnic_msix_intr;
654 else if (adapter->flags & QLCNIC_MSI_ENABLED)
655 handler = qlcnic_msi_intr;
656 else {
657 flags |= IRQF_SHARED;
658 handler = qlcnic_intr;
659 }
af19b491
AKS		 660 }
661 adapter->irq = netdev->irq;
662
663 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
664 sds_ring = &recv_ctx->sds_rings[ring];
665 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
666 err = request_irq(sds_ring->irq, handler,
667 flags, sds_ring->name, sds_ring);
668 if (err)
669 return err;
670 }
671
672 return 0;
673}
674
675static void
676qlcnic_free_irq(struct qlcnic_adapter *adapter)
677{
678 int ring;
679 struct qlcnic_host_sds_ring *sds_ring;
680
681 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
682
683 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
684 sds_ring = &recv_ctx->sds_rings[ring];
685 free_irq(sds_ring->irq, sds_ring);
686 }
687}
688
689static void
690qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
691{
692 adapter->coal.flags = QLCNIC_INTR_DEFAULT;
693 adapter->coal.normal.data.rx_time_us =
694 QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
695 adapter->coal.normal.data.rx_packets =
696 QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
697 adapter->coal.normal.data.tx_time_us =
698 QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
699 adapter->coal.normal.data.tx_packets =
700 QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
701}
702
703static int
704__qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
705{
706 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
707 return -EIO;
708
709 qlcnic_set_multi(netdev);
710 qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu);
711
712 adapter->ahw.linkup = 0;
713
714 if (adapter->max_sds_rings > 1)
715 qlcnic_config_rss(adapter, 1);
716
717 qlcnic_config_intr_coalesce(adapter);
718
719 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
720 qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
721
722 qlcnic_napi_enable(adapter);
723
724 qlcnic_linkevent_request(adapter, 1);
725
726 set_bit(__QLCNIC_DEV_UP, &adapter->state);
727 return 0;
728}
729
730/* Usage: During resume and firmware recovery module.*/
731
732static int
733qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
734{
735 int err = 0;
736
737 rtnl_lock();
738 if (netif_running(netdev))
739 err = __qlcnic_up(adapter, netdev);
740 rtnl_unlock();
741
742 return err;
743}
744
745static void
746__qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
747{
748 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
749 return;
750
751 if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
752 return;
753
754 smp_mb();
755 spin_lock(&adapter->tx_clean_lock);
756 netif_carrier_off(netdev);
757 netif_tx_disable(netdev);
758
759 qlcnic_free_mac_list(adapter);
760
761 qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
762
763 qlcnic_napi_disable(adapter);
764
765 qlcnic_release_tx_buffers(adapter);
766 spin_unlock(&adapter->tx_clean_lock);
767}
768
769/* Usage: During suspend and firmware recovery module */
770
771static void
772qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
773{
774 rtnl_lock();
775 if (netif_running(netdev))
776 __qlcnic_down(adapter, netdev);
777 rtnl_unlock();
778
779}
780
781static int
782qlcnic_attach(struct qlcnic_adapter *adapter)
783{
784 struct net_device *netdev = adapter->netdev;
785 struct pci_dev *pdev = adapter->pdev;
786 int err, ring;
787 struct qlcnic_host_rds_ring *rds_ring;
788
789 if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
790 return 0;
791
792 err = qlcnic_init_firmware(adapter);
793 if (err)
794 return err;
795
796 err = qlcnic_napi_add(adapter, netdev);
797 if (err)
798 return err;
799
800 err = qlcnic_alloc_sw_resources(adapter);
801 if (err) {
802 dev_err(&pdev->dev, "Error in setting sw resources\n");
803 return err;
804 }
805
806 err = qlcnic_alloc_hw_resources(adapter);
807 if (err) {
808 dev_err(&pdev->dev, "Error in setting hw resources\n");
809 goto err_out_free_sw;
810 }
811
812
813 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
814 rds_ring = &adapter->recv_ctx.rds_rings[ring];
815 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
816 }
817
818 err = qlcnic_request_irq(adapter);
819 if (err) {
820 dev_err(&pdev->dev, "failed to setup interrupt\n");
821 goto err_out_free_rxbuf;
822 }
823
824 qlcnic_init_coalesce_defaults(adapter);
825
826 qlcnic_create_sysfs_entries(adapter);
827
828 adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
829 return 0;
830
831err_out_free_rxbuf:
832 qlcnic_release_rx_buffers(adapter);
833 qlcnic_free_hw_resources(adapter);
834err_out_free_sw:
835 qlcnic_free_sw_resources(adapter);
836 return err;
837}
838
839static void
840qlcnic_detach(struct qlcnic_adapter *adapter)
841{
842 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
843 return;
844
845 qlcnic_remove_sysfs_entries(adapter);
846
847 qlcnic_free_hw_resources(adapter);
848 qlcnic_release_rx_buffers(adapter);
849 qlcnic_free_irq(adapter);
850 qlcnic_napi_del(adapter);
851 qlcnic_free_sw_resources(adapter);
852
853 adapter->is_up = 0;
854}
855
7eb9855d
AKS		 856void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
857{
858 struct qlcnic_adapter *adapter = netdev_priv(netdev);
859 struct qlcnic_host_sds_ring *sds_ring;
860 int ring;
861
cdaff185
AKS		 862 if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
863 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
864 sds_ring = &adapter->recv_ctx.sds_rings[ring];
865 qlcnic_disable_int(sds_ring);
866 }
7eb9855d
AKS		 867 }
868
869 qlcnic_detach(adapter);
870
871 adapter->diag_test = 0;
872 adapter->max_sds_rings = max_sds_rings;
873
874 if (qlcnic_attach(adapter))
34ce3626 875 goto out;
7eb9855d
AKS		 876
877 if (netif_running(netdev))
878 __qlcnic_up(adapter, netdev);
34ce3626 879out:
7eb9855d
AKS		 880 netif_device_attach(netdev);
881}
882
883int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
884{
885 struct qlcnic_adapter *adapter = netdev_priv(netdev);
886 struct qlcnic_host_sds_ring *sds_ring;
887 int ring;
888 int ret;
889
890 netif_device_detach(netdev);
891
892 if (netif_running(netdev))
893 __qlcnic_down(adapter, netdev);
894
895 qlcnic_detach(adapter);
896
897 adapter->max_sds_rings = 1;
898 adapter->diag_test = test;
899
900 ret = qlcnic_attach(adapter);
34ce3626
AKS		 901 if (ret) {
902 netif_device_attach(netdev);
7eb9855d 903 return ret;
34ce3626 904 }
7eb9855d 905
cdaff185
AKS		 906 if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
907 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
908 sds_ring = &adapter->recv_ctx.sds_rings[ring];
909 qlcnic_enable_int(sds_ring);
910 }
7eb9855d
AKS		 911 }
912
913 return 0;
914}
915
af19b491
AKS		 916int
917qlcnic_reset_context(struct qlcnic_adapter *adapter)
918{
919 int err = 0;
920 struct net_device *netdev = adapter->netdev;
921
922 if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
923 return -EBUSY;
924
925 if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
926
927 netif_device_detach(netdev);
928
929 if (netif_running(netdev))
930 __qlcnic_down(adapter, netdev);
931
932 qlcnic_detach(adapter);
933
934 if (netif_running(netdev)) {
935 err = qlcnic_attach(adapter);
936 if (!err)
34ce3626 937 __qlcnic_up(adapter, netdev);
af19b491
AKS		 938 }
939
940 netif_device_attach(netdev);
941 }
942
af19b491
AKS		 943 clear_bit(__QLCNIC_RESETTING, &adapter->state);
944 return err;
945}
946
947static int
948qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
1bb09fb9 949 struct net_device *netdev, u8 pci_using_dac)
af19b491
AKS		 950{
951 int err;
952 struct pci_dev *pdev = adapter->pdev;
953
954 adapter->rx_csum = 1;
955 adapter->mc_enabled = 0;
956 adapter->max_mc_count = 38;
957
958 netdev->netdev_ops = &qlcnic_netdev_ops;
959 netdev->watchdog_timeo = 2*HZ;
960
961 qlcnic_change_mtu(netdev, netdev->mtu);
962
963 SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
964
965 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
966 netdev->features |= (NETIF_F_GRO);
967 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
968
969 netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
970 netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
971
1bb09fb9 972 if (pci_using_dac) {
af19b491
AKS		 973 netdev->features |= NETIF_F_HIGHDMA;
974 netdev->vlan_features |= NETIF_F_HIGHDMA;
975 }
976
977 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
978 netdev->features |= (NETIF_F_HW_VLAN_TX);
979
980 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
981 netdev->features |= NETIF_F_LRO;
982
983 netdev->irq = adapter->msix_entries[0].vector;
984
985 INIT_WORK(&adapter->tx_timeout_task, qlcnic_tx_timeout_task);
986
987 if (qlcnic_read_mac_addr(adapter))
988 dev_warn(&pdev->dev, "failed to read mac addr\n");
989
990 netif_carrier_off(netdev);
991 netif_stop_queue(netdev);
992
993 err = register_netdev(netdev);
994 if (err) {
995 dev_err(&pdev->dev, "failed to register net device\n");
996 return err;
997 }
998
999 return 0;
1000}
1001
1bb09fb9
AKS		 1002static int qlcnic_set_dma_mask(struct pci_dev *pdev, u8 *pci_using_dac)
1003{
1004 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
1005 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1006 *pci_using_dac = 1;
1007 else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) &&
1008 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
1009 *pci_using_dac = 0;
1010 else {
1011 dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n");
1012 return -EIO;
1013 }
1014
1015 return 0;
1016}
1017
af19b491
AKS		 1018static int __devinit
1019qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1020{
1021 struct net_device *netdev = NULL;
1022 struct qlcnic_adapter *adapter = NULL;
1023 int err;
1024 int pci_func_id = PCI_FUNC(pdev->devfn);
1025 uint8_t revision_id;
1bb09fb9 1026 uint8_t pci_using_dac;
af19b491
AKS		 1027
1028 err = pci_enable_device(pdev);
1029 if (err)
1030 return err;
1031
1032 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1033 err = -ENODEV;
1034 goto err_out_disable_pdev;
1035 }
1036
1bb09fb9
AKS		 1037 err = qlcnic_set_dma_mask(pdev, &pci_using_dac);
1038 if (err)
1039 goto err_out_disable_pdev;
1040
af19b491
AKS		 1041 err = pci_request_regions(pdev, qlcnic_driver_name);
1042 if (err)
1043 goto err_out_disable_pdev;
1044
1045 pci_set_master(pdev);
1046
1047 netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
1048 if (!netdev) {
1049 dev_err(&pdev->dev, "failed to allocate net_device\n");
1050 err = -ENOMEM;
1051 goto err_out_free_res;
1052 }
1053
1054 SET_NETDEV_DEV(netdev, &pdev->dev);
1055
1056 adapter = netdev_priv(netdev);
1057 adapter->netdev = netdev;
1058 adapter->pdev = pdev;
1059 adapter->ahw.pci_func = pci_func_id;
1060
1061 revision_id = pdev->revision;
1062 adapter->ahw.revision_id = revision_id;
1063
1064 rwlock_init(&adapter->ahw.crb_lock);
1065 mutex_init(&adapter->ahw.mem_lock);
1066
1067 spin_lock_init(&adapter->tx_clean_lock);
1068 INIT_LIST_HEAD(&adapter->mac_list);
1069
1070 err = qlcnic_setup_pci_map(adapter);
1071 if (err)
1072 goto err_out_free_netdev;
1073
1074 /* This will be reset for mezz cards */
1075 adapter->portnum = pci_func_id;
1076
1077 err = qlcnic_get_board_info(adapter);
1078 if (err) {
1079 dev_err(&pdev->dev, "Error getting board config info.\n");
1080 goto err_out_iounmap;
1081 }
1082
b3a24649
SC		 1083 if (qlcnic_setup_idc_param(adapter))
1084 goto err_out_iounmap;
af19b491
AKS		 1085
1086 err = qlcnic_start_firmware(adapter);
1087 if (err)
1088 goto err_out_decr_ref;
1089
af19b491
AKS		 1090 qlcnic_clear_stats(adapter);
1091
1092 qlcnic_setup_intr(adapter);
1093
1bb09fb9 1094 err = qlcnic_setup_netdev(adapter, netdev, pci_using_dac);
af19b491
AKS		 1095 if (err)
1096 goto err_out_disable_msi;
1097
1098 pci_set_drvdata(pdev, adapter);
1099
1100 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1101
1102 switch (adapter->ahw.port_type) {
1103 case QLCNIC_GBE:
1104 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1105 adapter->netdev->name);
1106 break;
1107 case QLCNIC_XGBE:
1108 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1109 adapter->netdev->name);
1110 break;
1111 }
1112
1113 qlcnic_create_diag_entries(adapter);
1114
1115 return 0;
1116
1117err_out_disable_msi:
1118 qlcnic_teardown_intr(adapter);
1119
1120err_out_decr_ref:
1121 qlcnic_clr_all_drv_state(adapter);
1122
1123err_out_iounmap:
1124 qlcnic_cleanup_pci_map(adapter);
1125
1126err_out_free_netdev:
1127 free_netdev(netdev);
1128
1129err_out_free_res:
1130 pci_release_regions(pdev);
1131
1132err_out_disable_pdev:
1133 pci_set_drvdata(pdev, NULL);
1134 pci_disable_device(pdev);
1135 return err;
1136}
1137
1138static void __devexit qlcnic_remove(struct pci_dev *pdev)
1139{
1140 struct qlcnic_adapter *adapter;
1141 struct net_device *netdev;
1142
1143 adapter = pci_get_drvdata(pdev);
1144 if (adapter == NULL)
1145 return;
1146
1147 netdev = adapter->netdev;
1148
1149 qlcnic_cancel_fw_work(adapter);
1150
1151 unregister_netdev(netdev);
1152
1153 cancel_work_sync(&adapter->tx_timeout_task);
1154
1155 qlcnic_detach(adapter);
1156
1157 qlcnic_clr_all_drv_state(adapter);
1158
1159 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1160
1161 qlcnic_teardown_intr(adapter);
1162
1163 qlcnic_remove_diag_entries(adapter);
1164
1165 qlcnic_cleanup_pci_map(adapter);
1166
1167 qlcnic_release_firmware(adapter);
1168
1169 pci_release_regions(pdev);
1170 pci_disable_device(pdev);
1171 pci_set_drvdata(pdev, NULL);
1172
1173 free_netdev(netdev);
1174}
1175static int __qlcnic_shutdown(struct pci_dev *pdev)
1176{
1177 struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1178 struct net_device *netdev = adapter->netdev;
1179 int retval;
1180
1181 netif_device_detach(netdev);
1182
1183 qlcnic_cancel_fw_work(adapter);
1184
1185 if (netif_running(netdev))
1186 qlcnic_down(adapter, netdev);
1187
1188 cancel_work_sync(&adapter->tx_timeout_task);
1189
1190 qlcnic_detach(adapter);
1191
1192 qlcnic_clr_all_drv_state(adapter);
1193
1194 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1195
1196 retval = pci_save_state(pdev);
1197 if (retval)
1198 return retval;
1199
1200 if (qlcnic_wol_supported(adapter)) {
1201 pci_enable_wake(pdev, PCI_D3cold, 1);
1202 pci_enable_wake(pdev, PCI_D3hot, 1);
1203 }
1204
1205 return 0;
1206}
1207
1208static void qlcnic_shutdown(struct pci_dev *pdev)
1209{
1210 if (__qlcnic_shutdown(pdev))
1211 return;
1212
1213 pci_disable_device(pdev);
1214}
1215
1216#ifdef CONFIG_PM
1217static int
1218qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
1219{
1220 int retval;
1221
1222 retval = __qlcnic_shutdown(pdev);
1223 if (retval)
1224 return retval;
1225
1226 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1227 return 0;
1228}
1229
1230static int
1231qlcnic_resume(struct pci_dev *pdev)
1232{
1233 struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1234 struct net_device *netdev = adapter->netdev;
1235 int err;
1236
1237 err = pci_enable_device(pdev);
1238 if (err)
1239 return err;
1240
1241 pci_set_power_state(pdev, PCI_D0);
1242 pci_set_master(pdev);
1243 pci_restore_state(pdev);
1244
af19b491
AKS		 1245 err = qlcnic_start_firmware(adapter);
1246 if (err) {
1247 dev_err(&pdev->dev, "failed to start firmware\n");
1248 return err;
1249 }
1250
1251 if (netif_running(netdev)) {
1252 err = qlcnic_attach(adapter);
1253 if (err)
1254 goto err_out;
1255
1256 err = qlcnic_up(adapter, netdev);
1257 if (err)
1258 goto err_out_detach;
1259
1260
1261 qlcnic_config_indev_addr(netdev, NETDEV_UP);
1262 }
1263
1264 netif_device_attach(netdev);
1265 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1266 return 0;
1267
1268err_out_detach:
1269 qlcnic_detach(adapter);
1270err_out:
1271 qlcnic_clr_all_drv_state(adapter);
34ce3626 1272 netif_device_attach(netdev);
af19b491
AKS		 1273 return err;
1274}
1275#endif
1276
1277static int qlcnic_open(struct net_device *netdev)
1278{
1279 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1280 int err;
1281
1282 if (adapter->driver_mismatch)
1283 return -EIO;
1284
1285 err = qlcnic_attach(adapter);
1286 if (err)
1287 return err;
1288
1289 err = __qlcnic_up(adapter, netdev);
1290 if (err)
1291 goto err_out;
1292
1293 netif_start_queue(netdev);
1294
1295 return 0;
1296
1297err_out:
1298 qlcnic_detach(adapter);
1299 return err;
1300}
1301
1302/*
1303 * qlcnic_close - Disables a network interface entry point
1304 */
1305static int qlcnic_close(struct net_device *netdev)
1306{
1307 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1308
1309 __qlcnic_down(adapter, netdev);
1310 return 0;
1311}
1312
1313static void
1314qlcnic_tso_check(struct net_device *netdev,
1315 struct qlcnic_host_tx_ring *tx_ring,
1316 struct cmd_desc_type0 *first_desc,
1317 struct sk_buff *skb)
1318{
1319 u8 opcode = TX_ETHER_PKT;
1320 __be16 protocol = skb->protocol;
1321 u16 flags = 0, vid = 0;
1322 u32 producer;
1323 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1324 struct cmd_desc_type0 *hwdesc;
1325 struct vlan_ethhdr *vh;
8bfe8b91 1326 struct qlcnic_adapter *adapter = netdev_priv(netdev);
af19b491
AKS		 1327
1328 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1329
1330 vh = (struct vlan_ethhdr *)skb->data;
1331 protocol = vh->h_vlan_encapsulated_proto;
1332 flags = FLAGS_VLAN_TAGGED;
1333
1334 } else if (vlan_tx_tag_present(skb)) {
1335
1336 flags = FLAGS_VLAN_OOB;
1337 vid = vlan_tx_tag_get(skb);
1338 qlcnic_set_tx_vlan_tci(first_desc, vid);
1339 vlan_oob = 1;
1340 }
1341
1342 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1343 skb_shinfo(skb)->gso_size > 0) {
1344
1345 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1346
1347 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1348 first_desc->total_hdr_length = hdr_len;
1349 if (vlan_oob) {
1350 first_desc->total_hdr_length += VLAN_HLEN;
1351 first_desc->tcp_hdr_offset = VLAN_HLEN;
1352 first_desc->ip_hdr_offset = VLAN_HLEN;
1353 /* Only in case of TSO on vlan device */
1354 flags |= FLAGS_VLAN_TAGGED;
1355 }
1356
1357 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1358 TX_TCP_LSO6 : TX_TCP_LSO;
1359 tso = 1;
1360
1361 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1362 u8 l4proto;
1363
1364 if (protocol == cpu_to_be16(ETH_P_IP)) {
1365 l4proto = ip_hdr(skb)->protocol;
1366
1367 if (l4proto == IPPROTO_TCP)
1368 opcode = TX_TCP_PKT;
1369 else if (l4proto == IPPROTO_UDP)
1370 opcode = TX_UDP_PKT;
1371 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1372 l4proto = ipv6_hdr(skb)->nexthdr;
1373
1374 if (l4proto == IPPROTO_TCP)
1375 opcode = TX_TCPV6_PKT;
1376 else if (l4proto == IPPROTO_UDP)
1377 opcode = TX_UDPV6_PKT;
1378 }
1379 }
1380
1381 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1382 first_desc->ip_hdr_offset += skb_network_offset(skb);
1383 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
1384
1385 if (!tso)
1386 return;
1387
1388 /* For LSO, we need to copy the MAC/IP/TCP headers into
1389 * the descriptor ring
1390 */
1391 producer = tx_ring->producer;
1392 copied = 0;
1393 offset = 2;
1394
1395 if (vlan_oob) {
1396 /* Create a TSO vlan header template for firmware */
1397
1398 hwdesc = &tx_ring->desc_head[producer];
1399 tx_ring->cmd_buf_arr[producer].skb = NULL;
1400
1401 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1402 hdr_len + VLAN_HLEN);
1403
1404 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1405 skb_copy_from_linear_data(skb, vh, 12);
1406 vh->h_vlan_proto = htons(ETH_P_8021Q);
1407 vh->h_vlan_TCI = htons(vid);
1408 skb_copy_from_linear_data_offset(skb, 12,
1409 (char *)vh + 16, copy_len - 16);
1410
1411 copied = copy_len - VLAN_HLEN;
1412 offset = 0;
1413
1414 producer = get_next_index(producer, tx_ring->num_desc);
1415 }
1416
1417 while (copied < hdr_len) {
1418
1419 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1420 (hdr_len - copied));
1421
1422 hwdesc = &tx_ring->desc_head[producer];
1423 tx_ring->cmd_buf_arr[producer].skb = NULL;
1424
1425 skb_copy_from_linear_data_offset(skb, copied,
1426 (char *)hwdesc + offset, copy_len);
1427
1428 copied += copy_len;
1429 offset = 0;
1430
1431 producer = get_next_index(producer, tx_ring->num_desc);
1432 }
1433
1434 tx_ring->producer = producer;
1435 barrier();
8bfe8b91 1436 adapter->stats.lso_frames++;
af19b491
AKS		 1437}
1438
1439static int
1440qlcnic_map_tx_skb(struct pci_dev *pdev,
1441 struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
1442{
1443 struct qlcnic_skb_frag *nf;
1444 struct skb_frag_struct *frag;
1445 int i, nr_frags;
1446 dma_addr_t map;
1447
1448 nr_frags = skb_shinfo(skb)->nr_frags;
1449 nf = &pbuf->frag_array[0];
1450
1451 map = pci_map_single(pdev, skb->data,
1452 skb_headlen(skb), PCI_DMA_TODEVICE);
1453 if (pci_dma_mapping_error(pdev, map))
1454 goto out_err;
1455
1456 nf->dma = map;
1457 nf->length = skb_headlen(skb);
1458
1459 for (i = 0; i < nr_frags; i++) {
1460 frag = &skb_shinfo(skb)->frags[i];
1461 nf = &pbuf->frag_array[i+1];
1462
1463 map = pci_map_page(pdev, frag->page, frag->page_offset,
1464 frag->size, PCI_DMA_TODEVICE);
1465 if (pci_dma_mapping_error(pdev, map))
1466 goto unwind;
1467
1468 nf->dma = map;
1469 nf->length = frag->size;
1470 }
1471
1472 return 0;
1473
1474unwind:
1475 while (--i >= 0) {
1476 nf = &pbuf->frag_array[i+1];
1477 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1478 }
1479
1480 nf = &pbuf->frag_array[0];
1481 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1482
1483out_err:
1484 return -ENOMEM;
1485}
1486
1487static inline void
1488qlcnic_clear_cmddesc(u64 *desc)
1489{
1490 desc[0] = 0ULL;
1491 desc[2] = 0ULL;
1492}
1493
cdaff185 1494netdev_tx_t
af19b491
AKS		 1495qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1496{
1497 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1498 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1499 struct qlcnic_cmd_buffer *pbuf;
1500 struct qlcnic_skb_frag *buffrag;
1501 struct cmd_desc_type0 *hwdesc, *first_desc;
1502 struct pci_dev *pdev;
1503 int i, k;
1504
1505 u32 producer;
1506 int frag_count, no_of_desc;
1507 u32 num_txd = tx_ring->num_desc;
1508
780ab790
AKS		 1509 if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
1510 netif_stop_queue(netdev);
1511 return NETDEV_TX_BUSY;
1512 }
1513
af19b491
AKS		 1514 frag_count = skb_shinfo(skb)->nr_frags + 1;
1515
1516 /* 4 fragments per cmd des */
1517 no_of_desc = (frag_count + 3) >> 2;
1518
1519 if (unlikely(no_of_desc + 2 > qlcnic_tx_avail(tx_ring))) {
1520 netif_stop_queue(netdev);
8bfe8b91 1521 adapter->stats.xmit_off++;
af19b491
AKS		 1522 return NETDEV_TX_BUSY;
1523 }
1524
1525 producer = tx_ring->producer;
1526 pbuf = &tx_ring->cmd_buf_arr[producer];
1527
1528 pdev = adapter->pdev;
1529
8ae6df97
AKS		 1530 if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
1531 adapter->stats.tx_dma_map_error++;
af19b491 1532 goto drop_packet;
8ae6df97 1533 }
af19b491
AKS		 1534
1535 pbuf->skb = skb;
1536 pbuf->frag_count = frag_count;
1537
1538 first_desc = hwdesc = &tx_ring->desc_head[producer];
1539 qlcnic_clear_cmddesc((u64 *)hwdesc);
1540
1541 qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
1542 qlcnic_set_tx_port(first_desc, adapter->portnum);
1543
1544 for (i = 0; i < frag_count; i++) {
1545
1546 k = i % 4;
1547
1548 if ((k == 0) && (i > 0)) {
1549 /* move to next desc.*/
1550 producer = get_next_index(producer, num_txd);
1551 hwdesc = &tx_ring->desc_head[producer];
1552 qlcnic_clear_cmddesc((u64 *)hwdesc);
1553 tx_ring->cmd_buf_arr[producer].skb = NULL;
1554 }
1555
1556 buffrag = &pbuf->frag_array[i];
1557
1558 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1559 switch (k) {
1560 case 0:
1561 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1562 break;
1563 case 1:
1564 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1565 break;
1566 case 2:
1567 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1568 break;
1569 case 3:
1570 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1571 break;
1572 }
1573 }
1574
1575 tx_ring->producer = get_next_index(producer, num_txd);
1576
1577 qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
1578
1579 qlcnic_update_cmd_producer(adapter, tx_ring);
1580
1581 adapter->stats.txbytes += skb->len;
1582 adapter->stats.xmitcalled++;
1583
1584 return NETDEV_TX_OK;
1585
1586drop_packet:
1587 adapter->stats.txdropped++;
1588 dev_kfree_skb_any(skb);
1589 return NETDEV_TX_OK;
1590}
1591
1592static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
1593{
1594 struct net_device *netdev = adapter->netdev;
1595 u32 temp, temp_state, temp_val;
1596 int rv = 0;
1597
1598 temp = QLCRD32(adapter, CRB_TEMP_STATE);
1599
1600 temp_state = qlcnic_get_temp_state(temp);
1601 temp_val = qlcnic_get_temp_val(temp);
1602
1603 if (temp_state == QLCNIC_TEMP_PANIC) {
1604 dev_err(&netdev->dev,
1605 "Device temperature %d degrees C exceeds"
1606 " maximum allowed. Hardware has been shut down.\n",
1607 temp_val);
1608 rv = 1;
1609 } else if (temp_state == QLCNIC_TEMP_WARN) {
1610 if (adapter->temp == QLCNIC_TEMP_NORMAL) {
1611 dev_err(&netdev->dev,
1612 "Device temperature %d degrees C "
1613 "exceeds operating range."
1614 " Immediate action needed.\n",
1615 temp_val);
1616 }
1617 } else {
1618 if (adapter->temp == QLCNIC_TEMP_WARN) {
1619 dev_info(&netdev->dev,
1620 "Device temperature is now %d degrees C"
1621 " in normal range.\n", temp_val);
1622 }
1623 }
1624 adapter->temp = temp_state;
1625 return rv;
1626}
1627
1628void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
1629{
1630 struct net_device *netdev = adapter->netdev;
1631
1632 if (adapter->ahw.linkup && !linkup) {
1633 dev_info(&netdev->dev, "NIC Link is down\n");
1634 adapter->ahw.linkup = 0;
1635 if (netif_running(netdev)) {
1636 netif_carrier_off(netdev);
1637 netif_stop_queue(netdev);
1638 }
1639 } else if (!adapter->ahw.linkup && linkup) {
1640 dev_info(&netdev->dev, "NIC Link is up\n");
1641 adapter->ahw.linkup = 1;
1642 if (netif_running(netdev)) {
1643 netif_carrier_on(netdev);
1644 netif_wake_queue(netdev);
1645 }
1646 }
1647}
1648
1649static void qlcnic_tx_timeout(struct net_device *netdev)
1650{
1651 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1652
1653 if (test_bit(__QLCNIC_RESETTING, &adapter->state))
1654 return;
1655
1656 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1657 schedule_work(&adapter->tx_timeout_task);
1658}
1659
1660static void qlcnic_tx_timeout_task(struct work_struct *work)
1661{
1662 struct qlcnic_adapter *adapter =
1663 container_of(work, struct qlcnic_adapter, tx_timeout_task);
1664
1665 if (!netif_running(adapter->netdev))
1666 return;
1667
1668 if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1669 return;
1670
1671 if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
1672 goto request_reset;
1673
1674 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1675 if (!qlcnic_reset_context(adapter)) {
1676 adapter->netdev->trans_start = jiffies;
1677 return;
1678
1679 /* context reset failed, fall through for fw reset */
1680 }
1681
1682request_reset:
1683 adapter->need_fw_reset = 1;
1684 clear_bit(__QLCNIC_RESETTING, &adapter->state);
65b5b420 1685 QLCDB(adapter, DRV, "Resetting adapter\n");
af19b491
AKS		 1686}
1687
1688static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
1689{
1690 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1691 struct net_device_stats *stats = &netdev->stats;
1692
1693 memset(stats, 0, sizeof(*stats));
1694
1695 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1696 stats->tx_packets = adapter->stats.xmitfinished;
1697 stats->rx_bytes = adapter->stats.rxbytes;
1698 stats->tx_bytes = adapter->stats.txbytes;
1699 stats->rx_dropped = adapter->stats.rxdropped;
1700 stats->tx_dropped = adapter->stats.txdropped;
1701
1702 return stats;
1703}
1704
7eb9855d 1705static irqreturn_t qlcnic_clear_legacy_intr(struct qlcnic_adapter *adapter)
af19b491 1706{
af19b491
AKS		 1707 u32 status;
1708
1709 status = readl(adapter->isr_int_vec);
1710
1711 if (!(status & adapter->int_vec_bit))
1712 return IRQ_NONE;
1713
1714 /* check interrupt state machine, to be sure */
1715 status = readl(adapter->crb_int_state_reg);
1716 if (!ISR_LEGACY_INT_TRIGGERED(status))
1717 return IRQ_NONE;
1718
1719 writel(0xffffffff, adapter->tgt_status_reg);
1720 /* read twice to ensure write is flushed */
1721 readl(adapter->isr_int_vec);
1722 readl(adapter->isr_int_vec);
1723
7eb9855d
AKS		 1724 return IRQ_HANDLED;
1725}
1726
1727static irqreturn_t qlcnic_tmp_intr(int irq, void *data)
1728{
1729 struct qlcnic_host_sds_ring *sds_ring = data;
1730 struct qlcnic_adapter *adapter = sds_ring->adapter;
1731
1732 if (adapter->flags & QLCNIC_MSIX_ENABLED)
1733 goto done;
1734 else if (adapter->flags & QLCNIC_MSI_ENABLED) {
1735 writel(0xffffffff, adapter->tgt_status_reg);
1736 goto done;
1737 }
1738
1739 if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1740 return IRQ_NONE;
1741
1742done:
1743 adapter->diag_cnt++;
1744 qlcnic_enable_int(sds_ring);
1745 return IRQ_HANDLED;
1746}
1747
1748static irqreturn_t qlcnic_intr(int irq, void *data)
1749{
1750 struct qlcnic_host_sds_ring *sds_ring = data;
1751 struct qlcnic_adapter *adapter = sds_ring->adapter;
1752
1753 if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1754 return IRQ_NONE;
1755
af19b491
AKS		 1756 napi_schedule(&sds_ring->napi);
1757
1758 return IRQ_HANDLED;
1759}
1760
1761static irqreturn_t qlcnic_msi_intr(int irq, void *data)
1762{
1763 struct qlcnic_host_sds_ring *sds_ring = data;
1764 struct qlcnic_adapter *adapter = sds_ring->adapter;
1765
1766 /* clear interrupt */
1767 writel(0xffffffff, adapter->tgt_status_reg);
1768
1769 napi_schedule(&sds_ring->napi);
1770 return IRQ_HANDLED;
1771}
1772
1773static irqreturn_t qlcnic_msix_intr(int irq, void *data)
1774{
1775 struct qlcnic_host_sds_ring *sds_ring = data;
1776
1777 napi_schedule(&sds_ring->napi);
1778 return IRQ_HANDLED;
1779}
1780
1781static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
1782{
1783 u32 sw_consumer, hw_consumer;
1784 int count = 0, i;
1785 struct qlcnic_cmd_buffer *buffer;
1786 struct pci_dev *pdev = adapter->pdev;
1787 struct net_device *netdev = adapter->netdev;
1788 struct qlcnic_skb_frag *frag;
1789 int done;
1790 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1791
1792 if (!spin_trylock(&adapter->tx_clean_lock))
1793 return 1;
1794
1795 sw_consumer = tx_ring->sw_consumer;
1796 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1797
1798 while (sw_consumer != hw_consumer) {
1799 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1800 if (buffer->skb) {
1801 frag = &buffer->frag_array[0];
1802 pci_unmap_single(pdev, frag->dma, frag->length,
1803 PCI_DMA_TODEVICE);
1804 frag->dma = 0ULL;
1805 for (i = 1; i < buffer->frag_count; i++) {
1806 frag++;
1807 pci_unmap_page(pdev, frag->dma, frag->length,
1808 PCI_DMA_TODEVICE);
1809 frag->dma = 0ULL;
1810 }
1811
1812 adapter->stats.xmitfinished++;
1813 dev_kfree_skb_any(buffer->skb);
1814 buffer->skb = NULL;
1815 }
1816
1817 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1818 if (++count >= MAX_STATUS_HANDLE)
1819 break;
1820 }
1821
1822 if (count && netif_running(netdev)) {
1823 tx_ring->sw_consumer = sw_consumer;
1824
1825 smp_mb();
1826
1827 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
1828 __netif_tx_lock(tx_ring->txq, smp_processor_id());
1829 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
1830 netif_wake_queue(netdev);
1831 adapter->tx_timeo_cnt = 0;
8bfe8b91 1832 adapter->stats.xmit_on++;
af19b491
AKS		 1833 }
1834 __netif_tx_unlock(tx_ring->txq);
1835 }
1836 }
1837 /*
1838 * If everything is freed up to consumer then check if the ring is full
1839 * If the ring is full then check if more needs to be freed and
1840 * schedule the call back again.
1841 *
1842 * This happens when there are 2 CPUs. One could be freeing and the
1843 * other filling it. If the ring is full when we get out of here and
1844 * the card has already interrupted the host then the host can miss the
1845 * interrupt.
1846 *
1847 * There is still a possible race condition and the host could miss an
1848 * interrupt. The card has to take care of this.
1849 */
1850 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1851 done = (sw_consumer == hw_consumer);
1852 spin_unlock(&adapter->tx_clean_lock);
1853
1854 return done;
1855}
1856
1857static int qlcnic_poll(struct napi_struct *napi, int budget)
1858{
1859 struct qlcnic_host_sds_ring *sds_ring =
1860 container_of(napi, struct qlcnic_host_sds_ring, napi);
1861
1862 struct qlcnic_adapter *adapter = sds_ring->adapter;
1863
1864 int tx_complete;
1865 int work_done;
1866
1867 tx_complete = qlcnic_process_cmd_ring(adapter);
1868
1869 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
1870
1871 if ((work_done < budget) && tx_complete) {
1872 napi_complete(&sds_ring->napi);
1873 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
1874 qlcnic_enable_int(sds_ring);
1875 }
1876
1877 return work_done;
1878}
1879
1880#ifdef CONFIG_NET_POLL_CONTROLLER
1881static void qlcnic_poll_controller(struct net_device *netdev)
1882{
1883 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1884 disable_irq(adapter->irq);
1885 qlcnic_intr(adapter->irq, adapter);
1886 enable_irq(adapter->irq);
1887}
1888#endif
1889
ade91f8e
AKS		 1890static int
1891qlcnic_set_drv_state(struct qlcnic_adapter *adapter, u8 state)
af19b491
AKS		 1892{
1893 u32 val;
1894
1895 WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
1896 state != QLCNIC_DEV_NEED_QUISCENT);
1897
1898 if (qlcnic_api_lock(adapter))
ade91f8e 1899 return -EIO;
af19b491
AKS		 1900
1901 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
1902
1903 if (state == QLCNIC_DEV_NEED_RESET)
6d2a4724 1904 QLC_DEV_SET_RST_RDY(val, adapter->portnum);
af19b491 1905 else if (state == QLCNIC_DEV_NEED_QUISCENT)
6d2a4724 1906 QLC_DEV_SET_QSCNT_RDY(val, adapter->portnum);
af19b491
AKS		 1907
1908 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
1909
1910 qlcnic_api_unlock(adapter);
ade91f8e
AKS		 1911
1912 return 0;
af19b491
AKS		 1913}
1914
1b95a839
AKS		 1915static int
1916qlcnic_clr_drv_state(struct qlcnic_adapter *adapter)
1917{
1918 u32 val;
1919
1920 if (qlcnic_api_lock(adapter))
1921 return -EBUSY;
1922
1923 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
6d2a4724 1924 QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
1b95a839
AKS		 1925 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
1926
1927 qlcnic_api_unlock(adapter);
1928
1929 return 0;
1930}
1931
af19b491
AKS		 1932static void
1933qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
1934{
1935 u32 val;
1936
1937 if (qlcnic_api_lock(adapter))
1938 goto err;
1939
1940 val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
6d2a4724 1941 QLC_DEV_CLR_REF_CNT(val, adapter->portnum);
af19b491
AKS		 1942 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
1943
1944 if (!(val & 0x11111111))
1945 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
1946
1947 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
6d2a4724 1948 QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
af19b491
AKS		 1949 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
1950
1951 qlcnic_api_unlock(adapter);
1952err:
1953 adapter->fw_fail_cnt = 0;
1954 clear_bit(__QLCNIC_START_FW, &adapter->state);
1955 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1956}
1957
f73dfc50 1958/* Grab api lock, before checking state */
af19b491
AKS		 1959static int
1960qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
1961{
1962 int act, state;
1963
1964 state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
1965 act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
1966
1967 if (((state & 0x11111111) == (act & 0x11111111)) ||
1968 ((act & 0x11111111) == ((state >> 1) & 0x11111111)))
1969 return 0;
1970 else
1971 return 1;
1972}
1973
96f8118c
SC		 1974static int qlcnic_check_idc_ver(struct qlcnic_adapter *adapter)
1975{
1976 u32 val = QLCRD32(adapter, QLCNIC_CRB_DRV_IDC_VER);
1977
1978 if (val != QLCNIC_DRV_IDC_VER) {
1979 dev_warn(&adapter->pdev->dev, "IDC Version mismatch, driver's"
1980 " idc ver = %x; reqd = %x\n", QLCNIC_DRV_IDC_VER, val);
1981 }
1982
1983 return 0;
1984}
1985
af19b491
AKS		 1986static int
1987qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
1988{
1989 u32 val, prev_state;
aa5e18c0 1990 u8 dev_init_timeo = adapter->dev_init_timeo;
6d2a4724 1991 u8 portnum = adapter->portnum;
96f8118c 1992 u8 ret;
af19b491 1993
f73dfc50
AKS		 1994 if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state))
1995 return 1;
1996
af19b491
AKS		 1997 if (qlcnic_api_lock(adapter))
1998 return -1;
1999
2000 val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
6d2a4724
AKS		 2001 if (!(val & (1 << (portnum * 4)))) {
2002 QLC_DEV_SET_REF_CNT(val, portnum);
af19b491 2003 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
af19b491
AKS		 2004 }
2005
2006 prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
65b5b420 2007 QLCDB(adapter, HW, "Device state = %u\n", prev_state);
af19b491
AKS		 2008
2009 switch (prev_state) {
2010 case QLCNIC_DEV_COLD:
bbd8c6a4 2011 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITIALIZING);
96f8118c 2012 QLCWR32(adapter, QLCNIC_CRB_DRV_IDC_VER, QLCNIC_DRV_IDC_VER);
af19b491
AKS		 2013 qlcnic_api_unlock(adapter);
2014 return 1;
2015
2016 case QLCNIC_DEV_READY:
96f8118c 2017 ret = qlcnic_check_idc_ver(adapter);
af19b491 2018 qlcnic_api_unlock(adapter);
96f8118c 2019 return ret;
af19b491
AKS		 2020
2021 case QLCNIC_DEV_NEED_RESET:
2022 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
6d2a4724 2023 QLC_DEV_SET_RST_RDY(val, portnum);
af19b491
AKS		 2024 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2025 break;
2026
2027 case QLCNIC_DEV_NEED_QUISCENT:
2028 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
6d2a4724 2029 QLC_DEV_SET_QSCNT_RDY(val, portnum);
af19b491
AKS		 2030 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2031 break;
2032
2033 case QLCNIC_DEV_FAILED:
2034 qlcnic_api_unlock(adapter);
2035 return -1;
bbd8c6a4
AKS		 2036
2037 case QLCNIC_DEV_INITIALIZING:
2038 case QLCNIC_DEV_QUISCENT:
2039 break;
af19b491
AKS		 2040 }
2041
2042 qlcnic_api_unlock(adapter);
aa5e18c0
SC		 2043
2044 do {
af19b491 2045 msleep(1000);
a5e463d0
SC		 2046 prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2047
2048 if (prev_state == QLCNIC_DEV_QUISCENT)
2049 continue;
2050 } while ((prev_state != QLCNIC_DEV_READY) && --dev_init_timeo);
af19b491 2051
65b5b420
AKS		 2052 if (!dev_init_timeo) {
2053 dev_err(&adapter->pdev->dev,
2054 "Waiting for device to initialize timeout\n");
af19b491 2055 return -1;
65b5b420 2056 }
af19b491
AKS		 2057
2058 if (qlcnic_api_lock(adapter))
2059 return -1;
2060
2061 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
6d2a4724 2062 QLC_DEV_CLR_RST_QSCNT(val, portnum);
af19b491
AKS		 2063 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2064
96f8118c 2065 ret = qlcnic_check_idc_ver(adapter);
af19b491
AKS		 2066 qlcnic_api_unlock(adapter);
2067
96f8118c 2068 return ret;
af19b491
AKS		 2069}
2070
2071static void
2072qlcnic_fwinit_work(struct work_struct *work)
2073{
2074 struct qlcnic_adapter *adapter = container_of(work,
2075 struct qlcnic_adapter, fw_work.work);
f73dfc50 2076 u32 dev_state = 0xf;
af19b491 2077
f73dfc50
AKS		 2078 if (qlcnic_api_lock(adapter))
2079 goto err_ret;
af19b491 2080
a5e463d0
SC		 2081 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2082 if (dev_state == QLCNIC_DEV_QUISCENT) {
2083 qlcnic_api_unlock(adapter);
2084 qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2085 FW_POLL_DELAY * 2);
2086 return;
2087 }
2088
f73dfc50
AKS		 2089 if (adapter->fw_wait_cnt++ > adapter->reset_ack_timeo) {
2090 dev_err(&adapter->pdev->dev, "Reset:Failed to get ack %d sec\n",
2091 adapter->reset_ack_timeo);
2092 goto skip_ack_check;
2093 }
2094
2095 if (!qlcnic_check_drv_state(adapter)) {
2096skip_ack_check:
2097 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
a5e463d0
SC		 2098
2099 if (dev_state == QLCNIC_DEV_NEED_QUISCENT) {
2100 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2101 QLCNIC_DEV_QUISCENT);
2102 qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2103 FW_POLL_DELAY * 2);
2104 QLCDB(adapter, DRV, "Quiscing the driver\n");
2105 qlcnic_api_unlock(adapter);
2106 return;
2107 }
2108
f73dfc50
AKS		 2109 if (dev_state == QLCNIC_DEV_NEED_RESET) {
2110 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2111 QLCNIC_DEV_INITIALIZING);
2112 set_bit(__QLCNIC_START_FW, &adapter->state);
2113 QLCDB(adapter, DRV, "Restarting fw\n");
af19b491
AKS		 2114 }
2115
f73dfc50
AKS		 2116 qlcnic_api_unlock(adapter);
2117
af19b491
AKS		 2118 if (!qlcnic_start_firmware(adapter)) {
2119 qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2120 return;
2121 }
af19b491
AKS		 2122 goto err_ret;
2123 }
2124
f73dfc50 2125 qlcnic_api_unlock(adapter);
aa5e18c0 2126
af19b491 2127 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
f73dfc50 2128 QLCDB(adapter, HW, "Func waiting: Device state=%u\n", dev_state);
65b5b420 2129
af19b491 2130 switch (dev_state) {
a5e463d0
SC		 2131 case QLCNIC_DEV_QUISCENT:
2132 case QLCNIC_DEV_NEED_QUISCENT:
f73dfc50
AKS		 2133 case QLCNIC_DEV_NEED_RESET:
2134 qlcnic_schedule_work(adapter,
2135 qlcnic_fwinit_work, FW_POLL_DELAY);
2136 return;
af19b491
AKS		 2137 case QLCNIC_DEV_FAILED:
2138 break;
2139
2140 default:
f73dfc50
AKS		 2141 if (!qlcnic_start_firmware(adapter)) {
2142 qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2143 return;
2144 }
af19b491
AKS		 2145 }
2146
2147err_ret:
f73dfc50
AKS		 2148 dev_err(&adapter->pdev->dev, "Fwinit work failed state=%u "
2149 "fw_wait_cnt=%u\n", dev_state, adapter->fw_wait_cnt);
34ce3626 2150 netif_device_attach(adapter->netdev);
af19b491
AKS		 2151 qlcnic_clr_all_drv_state(adapter);
2152}
2153
2154static void
2155qlcnic_detach_work(struct work_struct *work)
2156{
2157 struct qlcnic_adapter *adapter = container_of(work,
2158 struct qlcnic_adapter, fw_work.work);
2159 struct net_device *netdev = adapter->netdev;
2160 u32 status;
2161
2162 netif_device_detach(netdev);
2163
2164 qlcnic_down(adapter, netdev);
2165
ce668443 2166 rtnl_lock();
af19b491 2167 qlcnic_detach(adapter);
ce668443 2168 rtnl_unlock();
af19b491
AKS		 2169
2170 status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
2171
2172 if (status & QLCNIC_RCODE_FATAL_ERROR)
2173 goto err_ret;
2174
2175 if (adapter->temp == QLCNIC_TEMP_PANIC)
2176 goto err_ret;
2177
ade91f8e
AKS		 2178 if (qlcnic_set_drv_state(adapter, adapter->dev_state))
2179 goto err_ret;
af19b491
AKS		 2180
2181 adapter->fw_wait_cnt = 0;
2182
2183 qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
2184
2185 return;
2186
2187err_ret:
65b5b420
AKS		 2188 dev_err(&adapter->pdev->dev, "detach failed; status=%d temp=%d\n",
2189 status, adapter->temp);
34ce3626 2190 netif_device_attach(netdev);
af19b491
AKS		 2191 qlcnic_clr_all_drv_state(adapter);
2192
2193}
2194
f73dfc50 2195/*Transit to RESET state from READY state only */
af19b491
AKS		 2196static void
2197qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
2198{
2199 u32 state;
2200
2201 if (qlcnic_api_lock(adapter))
2202 return;
2203
2204 state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2205
f73dfc50 2206 if (state == QLCNIC_DEV_READY) {
af19b491 2207 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
65b5b420 2208 QLCDB(adapter, DRV, "NEED_RESET state set\n");
af19b491
AKS		 2209 }
2210
2211 qlcnic_api_unlock(adapter);
2212}
2213
2214static void
2215qlcnic_schedule_work(struct qlcnic_adapter *adapter,
2216 work_func_t func, int delay)
2217{
2218 INIT_DELAYED_WORK(&adapter->fw_work, func);
2219 schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
2220}
2221
2222static void
2223qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
2224{
2225 while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
2226 msleep(10);
2227
2228 cancel_delayed_work_sync(&adapter->fw_work);
2229}
2230
2231static void
2232qlcnic_attach_work(struct work_struct *work)
2233{
2234 struct qlcnic_adapter *adapter = container_of(work,
2235 struct qlcnic_adapter, fw_work.work);
2236 struct net_device *netdev = adapter->netdev;
2237 int err;
2238
2239 if (netif_running(netdev)) {
2240 err = qlcnic_attach(adapter);
2241 if (err)
2242 goto done;
2243
2244 err = qlcnic_up(adapter, netdev);
2245 if (err) {
2246 qlcnic_detach(adapter);
2247 goto done;
2248 }
2249
2250 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2251 }
2252
af19b491 2253done:
34ce3626 2254 netif_device_attach(netdev);
af19b491
AKS		 2255 adapter->fw_fail_cnt = 0;
2256 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1b95a839
AKS		 2257
2258 if (!qlcnic_clr_drv_state(adapter))
2259 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2260 FW_POLL_DELAY);
af19b491
AKS		 2261}
2262
2263static int
2264qlcnic_check_health(struct qlcnic_adapter *adapter)
2265{
2266 u32 state = 0, heartbit;
2267 struct net_device *netdev = adapter->netdev;
2268
2269 if (qlcnic_check_temp(adapter))
2270 goto detach;
2271
2372a5f1 2272 if (adapter->need_fw_reset)
af19b491 2273 qlcnic_dev_request_reset(adapter);
af19b491
AKS		 2274
2275 state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2276 if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
2277 adapter->need_fw_reset = 1;
2278
2279 heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
2280 if (heartbit != adapter->heartbit) {
2281 adapter->heartbit = heartbit;
2282 adapter->fw_fail_cnt = 0;
2283 if (adapter->need_fw_reset)
2284 goto detach;
2285 return 0;
2286 }
2287
2288 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2289 return 0;
2290
2291 qlcnic_dev_request_reset(adapter);
2292
2293 clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
2294
2295 dev_info(&netdev->dev, "firmware hang detected\n");
2296
2297detach:
2298 adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
2299 QLCNIC_DEV_NEED_RESET;
2300
2301 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
65b5b420
AKS		 2302 !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) {
2303
af19b491 2304 qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
65b5b420
AKS		 2305 QLCDB(adapter, DRV, "fw recovery scheduled.\n");
2306 }
af19b491
AKS		 2307
2308 return 1;
2309}
2310
2311static void
2312qlcnic_fw_poll_work(struct work_struct *work)
2313{
2314 struct qlcnic_adapter *adapter = container_of(work,
2315 struct qlcnic_adapter, fw_work.work);
2316
2317 if (test_bit(__QLCNIC_RESETTING, &adapter->state))
2318 goto reschedule;
2319
2320
2321 if (qlcnic_check_health(adapter))
2322 return;
2323
2324reschedule:
2325 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
2326}
2327
2328static ssize_t
2329qlcnic_store_bridged_mode(struct device *dev,
2330 struct device_attribute *attr, const char *buf, size_t len)
2331{
2332 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2333 unsigned long new;
2334 int ret = -EINVAL;
2335
2336 if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
2337 goto err_out;
2338
2339 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2340 goto err_out;
2341
2342 if (strict_strtoul(buf, 2, &new))
2343 goto err_out;
2344
2345 if (!qlcnic_config_bridged_mode(adapter, !!new))
2346 ret = len;
2347
2348err_out:
2349 return ret;
2350}
2351
2352static ssize_t
2353qlcnic_show_bridged_mode(struct device *dev,
2354 struct device_attribute *attr, char *buf)
2355{
2356 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2357 int bridged_mode = 0;
2358
2359 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2360 bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
2361
2362 return sprintf(buf, "%d\n", bridged_mode);
2363}
2364
2365static struct device_attribute dev_attr_bridged_mode = {
2366 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2367 .show = qlcnic_show_bridged_mode,
2368 .store = qlcnic_store_bridged_mode,
2369};
2370
2371static ssize_t
2372qlcnic_store_diag_mode(struct device *dev,
2373 struct device_attribute *attr, const char *buf, size_t len)
2374{
2375 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2376 unsigned long new;
2377
2378 if (strict_strtoul(buf, 2, &new))
2379 return -EINVAL;
2380
2381 if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
2382 adapter->flags ^= QLCNIC_DIAG_ENABLED;
2383
2384 return len;
2385}
2386
2387static ssize_t
2388qlcnic_show_diag_mode(struct device *dev,
2389 struct device_attribute *attr, char *buf)
2390{
2391 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2392
2393 return sprintf(buf, "%d\n",
2394 !!(adapter->flags & QLCNIC_DIAG_ENABLED));
2395}
2396
2397static struct device_attribute dev_attr_diag_mode = {
2398 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2399 .show = qlcnic_show_diag_mode,
2400 .store = qlcnic_store_diag_mode,
2401};
2402
2403static int
2404qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
2405 loff_t offset, size_t size)
2406{
897e8c7c
DP		 2407 size_t crb_size = 4;
2408
af19b491
AKS		 2409 if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2410 return -EIO;
2411
897e8c7c
DP		 2412 if (offset < QLCNIC_PCI_CRBSPACE) {
2413 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM,
2414 QLCNIC_PCI_CAMQM_END))
2415 crb_size = 8;
2416 else
2417 return -EINVAL;
2418 }
af19b491 2419
897e8c7c
DP		 2420 if ((size != crb_size) || (offset & (crb_size-1)))
2421 return -EINVAL;
af19b491
AKS		 2422
2423 return 0;
2424}
2425
2426static ssize_t
2427qlcnic_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
2428 char *buf, loff_t offset, size_t size)
2429{
2430 struct device *dev = container_of(kobj, struct device, kobj);
2431 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2432 u32 data;
897e8c7c 2433 u64 qmdata;
af19b491
AKS		 2434 int ret;
2435
2436 ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2437 if (ret != 0)
2438 return ret;
2439
897e8c7c
DP		 2440 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2441 qlcnic_pci_camqm_read_2M(adapter, offset, &qmdata);
2442 memcpy(buf, &qmdata, size);
2443 } else {
2444 data = QLCRD32(adapter, offset);
2445 memcpy(buf, &data, size);
2446 }
af19b491
AKS		 2447 return size;
2448}
2449
2450static ssize_t
2451qlcnic_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
2452 char *buf, loff_t offset, size_t size)
2453{
2454 struct device *dev = container_of(kobj, struct device, kobj);
2455 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2456 u32 data;
897e8c7c 2457 u64 qmdata;
af19b491
AKS		 2458 int ret;
2459
2460 ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2461 if (ret != 0)
2462 return ret;
2463
897e8c7c
DP		 2464 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2465 memcpy(&qmdata, buf, size);
2466 qlcnic_pci_camqm_write_2M(adapter, offset, qmdata);
2467 } else {
2468 memcpy(&data, buf, size);
2469 QLCWR32(adapter, offset, data);
2470 }
af19b491
AKS		 2471 return size;
2472}
2473
2474static int
2475qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
2476 loff_t offset, size_t size)
2477{
2478 if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2479 return -EIO;
2480
2481 if ((size != 8) || (offset & 0x7))
2482 return -EIO;
2483
2484 return 0;
2485}
2486
2487static ssize_t
2488qlcnic_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
2489 char *buf, loff_t offset, size_t size)
2490{
2491 struct device *dev = container_of(kobj, struct device, kobj);
2492 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2493 u64 data;
2494 int ret;
2495
2496 ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2497 if (ret != 0)
2498 return ret;
2499
2500 if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
2501 return -EIO;
2502
2503 memcpy(buf, &data, size);
2504
2505 return size;
2506}
2507
2508static ssize_t
2509qlcnic_sysfs_write_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 memcpy(&data, buf, size);
2522
2523 if (qlcnic_pci_mem_write_2M(adapter, offset, data))
2524 return -EIO;
2525
2526 return size;
2527}
2528
2529
2530static struct bin_attribute bin_attr_crb = {
2531 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2532 .size = 0,
2533 .read = qlcnic_sysfs_read_crb,
2534 .write = qlcnic_sysfs_write_crb,
2535};
2536
2537static struct bin_attribute bin_attr_mem = {
2538 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2539 .size = 0,
2540 .read = qlcnic_sysfs_read_mem,
2541 .write = qlcnic_sysfs_write_mem,
2542};
2543
2544static void
2545qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
2546{
2547 struct device *dev = &adapter->pdev->dev;
2548
2549 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2550 if (device_create_file(dev, &dev_attr_bridged_mode))
2551 dev_warn(dev,
2552 "failed to create bridged_mode sysfs entry\n");
2553}
2554
2555static void
2556qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
2557{
2558 struct device *dev = &adapter->pdev->dev;
2559
2560 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2561 device_remove_file(dev, &dev_attr_bridged_mode);
2562}
2563
2564static void
2565qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
2566{
2567 struct device *dev = &adapter->pdev->dev;
2568
2569 if (device_create_file(dev, &dev_attr_diag_mode))
2570 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2571 if (device_create_bin_file(dev, &bin_attr_crb))
2572 dev_info(dev, "failed to create crb sysfs entry\n");
2573 if (device_create_bin_file(dev, &bin_attr_mem))
2574 dev_info(dev, "failed to create mem sysfs entry\n");
2575}
2576
2577
2578static void
2579qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
2580{
2581 struct device *dev = &adapter->pdev->dev;
2582
2583 device_remove_file(dev, &dev_attr_diag_mode);
2584 device_remove_bin_file(dev, &bin_attr_crb);
2585 device_remove_bin_file(dev, &bin_attr_mem);
2586}
2587
2588#ifdef CONFIG_INET
2589
2590#define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
2591
af19b491
AKS		 2592static void
2593qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2594{
2595 struct in_device *indev;
2596 struct qlcnic_adapter *adapter = netdev_priv(dev);
2597
af19b491
AKS		 2598 indev = in_dev_get(dev);
2599 if (!indev)
2600 return;
2601
2602 for_ifa(indev) {
2603 switch (event) {
2604 case NETDEV_UP:
2605 qlcnic_config_ipaddr(adapter,
2606 ifa->ifa_address, QLCNIC_IP_UP);
2607 break;
2608 case NETDEV_DOWN:
2609 qlcnic_config_ipaddr(adapter,
2610 ifa->ifa_address, QLCNIC_IP_DOWN);
2611 break;
2612 default:
2613 break;
2614 }
2615 } endfor_ifa(indev);
2616
2617 in_dev_put(indev);
af19b491
AKS		 2618}
2619
2620static int qlcnic_netdev_event(struct notifier_block *this,
2621 unsigned long event, void *ptr)
2622{
2623 struct qlcnic_adapter *adapter;
2624 struct net_device *dev = (struct net_device *)ptr;
2625
2626recheck:
2627 if (dev == NULL)
2628 goto done;
2629
2630 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2631 dev = vlan_dev_real_dev(dev);
2632 goto recheck;
2633 }
2634
2635 if (!is_qlcnic_netdev(dev))
2636 goto done;
2637
2638 adapter = netdev_priv(dev);
2639
2640 if (!adapter)
2641 goto done;
2642
2643 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2644 goto done;
2645
2646 qlcnic_config_indev_addr(dev, event);
2647done:
2648 return NOTIFY_DONE;
2649}
2650
2651static int
2652qlcnic_inetaddr_event(struct notifier_block *this,
2653 unsigned long event, void *ptr)
2654{
2655 struct qlcnic_adapter *adapter;
2656 struct net_device *dev;
2657
2658 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2659
2660 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2661
2662recheck:
2663 if (dev == NULL || !netif_running(dev))
2664 goto done;
2665
2666 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2667 dev = vlan_dev_real_dev(dev);
2668 goto recheck;
2669 }
2670
2671 if (!is_qlcnic_netdev(dev))
2672 goto done;
2673
2674 adapter = netdev_priv(dev);
2675
251a84c9 2676 if (!adapter)
af19b491
AKS		 2677 goto done;
2678
2679 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2680 goto done;
2681
2682 switch (event) {
2683 case NETDEV_UP:
2684 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
2685 break;
2686 case NETDEV_DOWN:
2687 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
2688 break;
2689 default:
2690 break;
2691 }
2692
2693done:
2694 return NOTIFY_DONE;
2695}
2696
2697static struct notifier_block qlcnic_netdev_cb = {
2698 .notifier_call = qlcnic_netdev_event,
2699};
2700
2701static struct notifier_block qlcnic_inetaddr_cb = {
2702 .notifier_call = qlcnic_inetaddr_event,
2703};
2704#else
2705static void
2706qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2707{ }
2708#endif
2709
2710static struct pci_driver qlcnic_driver = {
2711 .name = qlcnic_driver_name,
2712 .id_table = qlcnic_pci_tbl,
2713 .probe = qlcnic_probe,
2714 .remove = __devexit_p(qlcnic_remove),
2715#ifdef CONFIG_PM
2716 .suspend = qlcnic_suspend,
2717 .resume = qlcnic_resume,
2718#endif
2719 .shutdown = qlcnic_shutdown
2720};
2721
2722static int __init qlcnic_init_module(void)
2723{
2724
2725 printk(KERN_INFO "%s\n", qlcnic_driver_string);
2726
2727#ifdef CONFIG_INET
2728 register_netdevice_notifier(&qlcnic_netdev_cb);
2729 register_inetaddr_notifier(&qlcnic_inetaddr_cb);
2730#endif
2731
2732
2733 return pci_register_driver(&qlcnic_driver);
2734}
2735
2736module_init(qlcnic_init_module);
2737
2738static void __exit qlcnic_exit_module(void)
2739{
2740
2741 pci_unregister_driver(&qlcnic_driver);
2742
2743#ifdef CONFIG_INET
2744 unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
2745 unregister_netdevice_notifier(&qlcnic_netdev_cb);
2746#endif
2747}
2748
2749module_exit(qlcnic_exit_module);
Linux kernel - Deliverables
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