?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[linux.git] / drivers / scsi / qedi / qedi_main.c
blob628d59dda20cc40c4391441319d6ed8ae1afca66
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * QLogic iSCSI Offload Driver
4 * Copyright (c) 2016 Cavium Inc.
5 */
6
7 #include <linux/module.h>
8 #include <linux/pci.h>
9 #include <linux/kernel.h>
10 #include <linux/if_arp.h>
11 #include <scsi/iscsi_if.h>
12 #include <linux/inet.h>
13 #include <net/arp.h>
14 #include <linux/list.h>
15 #include <linux/kthread.h>
16 #include <linux/mm.h>
17 #include <linux/if_vlan.h>
18 #include <linux/cpu.h>
19 #include <linux/iscsi_boot_sysfs.h>
20
21 #include <scsi/scsi_cmnd.h>
22 #include <scsi/scsi_device.h>
23 #include <scsi/scsi_eh.h>
24 #include <scsi/scsi_host.h>
25 #include <scsi/scsi.h>
26
27 #include "qedi.h"
28 #include "qedi_gbl.h"
29 #include "qedi_iscsi.h"
30
31 static uint qedi_qed_debug;
32 module_param(qedi_qed_debug, uint, 0644);
33 MODULE_PARM_DESC(qedi_qed_debug, " QED debug level 0 (default)");
34
35 static uint qedi_fw_debug;
36 module_param(qedi_fw_debug, uint, 0644);
37 MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
38
39 uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
40 module_param(qedi_dbg_log, uint, 0644);
41 MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
42
43 uint qedi_io_tracing;
44 module_param(qedi_io_tracing, uint, 0644);
45 MODULE_PARM_DESC(qedi_io_tracing,
46 " Enable logging of SCSI requests/completions into trace buffer. (default off).");
47
48 static uint qedi_ll2_buf_size = 0x400;
49 module_param(qedi_ll2_buf_size, uint, 0644);
50 MODULE_PARM_DESC(qedi_ll2_buf_size,
51 "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400.");
52
53 static uint qedi_flags_override;
54 module_param(qedi_flags_override, uint, 0644);
55 MODULE_PARM_DESC(qedi_flags_override, "Disable/Enable MFW error flags bits action.");
56
57 const struct qed_iscsi_ops *qedi_ops;
58 static struct scsi_transport_template *qedi_scsi_transport;
59 static struct pci_driver qedi_pci_driver;
60 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
61 static LIST_HEAD(qedi_udev_list);
62 /* Static function declaration */
63 static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
64 static void qedi_free_global_queues(struct qedi_ctx *qedi);
65 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
66 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
67 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
68 static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi);
69 static void qedi_recovery_handler(struct work_struct *work);
70 static void qedi_schedule_hw_err_handler(void *dev,
71 enum qed_hw_err_type err_type);
72 static int qedi_suspend(struct pci_dev *pdev, pm_message_t state);
73
74 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
75 {
76 struct qedi_ctx *qedi;
77 struct qedi_endpoint *qedi_ep;
78 struct iscsi_eqe_data *data;
79 int rval = 0;
80
81 if (!context || !fw_handle) {
82 QEDI_ERR(NULL, "Recv event with ctx NULL\n");
83 return -EINVAL;
84 }
85
86 qedi = (struct qedi_ctx *)context;
87 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
88 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
89
90 data = (struct iscsi_eqe_data *)fw_handle;
91 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
92 "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n",
93 data->icid, data->conn_id, data->error_code,
94 data->error_pdu_opcode_reserved);
95
96 qedi_ep = qedi->ep_tbl[data->icid];
97
98 if (!qedi_ep) {
99 QEDI_WARN(&qedi->dbg_ctx,
100 "Cannot process event, ep already disconnected, cid=0x%x\n",
101 data->icid);
102 WARN_ON(1);
103 return -ENODEV;
104 }
105
106 switch (fw_event_code) {
107 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
108 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
109 qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
110
111 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
112 break;
113 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
114 qedi_ep->state = EP_STATE_DISCONN_COMPL;
115 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
116 break;
117 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
118 qedi_process_iscsi_error(qedi_ep, data);
119 break;
120 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
121 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
122 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
123 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
124 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
125 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
126 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
127 qedi_process_tcp_error(qedi_ep, data);
128 break;
129 default:
130 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
131 fw_event_code);
132 }
133
134 return rval;
135 }
136
137 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
138 {
139 struct qedi_uio_dev *udev = uinfo->priv;
140 struct qedi_ctx *qedi = udev->qedi;
141
142 if (!capable(CAP_NET_ADMIN))
143 return -EPERM;
144
145 if (udev->uio_dev != -1)
146 return -EBUSY;
147
148 rtnl_lock();
149 udev->uio_dev = iminor(inode);
150 qedi_reset_uio_rings(udev);
151 set_bit(UIO_DEV_OPENED, &qedi->flags);
152 rtnl_unlock();
153
154 return 0;
155 }
156
157 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
158 {
159 struct qedi_uio_dev *udev = uinfo->priv;
160 struct qedi_ctx *qedi = udev->qedi;
161
162 udev->uio_dev = -1;
163 clear_bit(UIO_DEV_OPENED, &qedi->flags);
164 qedi_ll2_free_skbs(qedi);
165 return 0;
166 }
167
168 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
169 {
170 if (udev->uctrl) {
171 free_page((unsigned long)udev->uctrl);
172 udev->uctrl = NULL;
173 }
174
175 if (udev->ll2_ring) {
176 free_page((unsigned long)udev->ll2_ring);
177 udev->ll2_ring = NULL;
178 }
179
180 if (udev->ll2_buf) {
181 free_pages((unsigned long)udev->ll2_buf, 2);
182 udev->ll2_buf = NULL;
183 }
184 }
185
186 static void __qedi_free_uio(struct qedi_uio_dev *udev)
187 {
188 uio_unregister_device(&udev->qedi_uinfo);
189
190 __qedi_free_uio_rings(udev);
191
192 pci_dev_put(udev->pdev);
193 kfree(udev);
194 }
195
196 static void qedi_free_uio(struct qedi_uio_dev *udev)
197 {
198 if (!udev)
199 return;
200
201 list_del_init(&udev->list);
202 __qedi_free_uio(udev);
203 }
204
205 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
206 {
207 struct qedi_ctx *qedi = NULL;
208 struct qedi_uio_ctrl *uctrl = NULL;
209
210 qedi = udev->qedi;
211 uctrl = udev->uctrl;
212
213 spin_lock_bh(&qedi->ll2_lock);
214 uctrl->host_rx_cons = 0;
215 uctrl->hw_rx_prod = 0;
216 uctrl->hw_rx_bd_prod = 0;
217 uctrl->host_rx_bd_cons = 0;
218
219 memset(udev->ll2_ring, 0, udev->ll2_ring_size);
220 memset(udev->ll2_buf, 0, udev->ll2_buf_size);
221 spin_unlock_bh(&qedi->ll2_lock);
222 }
223
224 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
225 {
226 int rc = 0;
227
228 if (udev->ll2_ring || udev->ll2_buf)
229 return rc;
230
231 /* Memory for control area. */
232 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
233 if (!udev->uctrl)
234 return -ENOMEM;
235
236 /* Allocating memory for LL2 ring */
237 udev->ll2_ring_size = QEDI_PAGE_SIZE;
238 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
239 if (!udev->ll2_ring) {
240 rc = -ENOMEM;
241 goto exit_alloc_ring;
242 }
243
244 /* Allocating memory for Tx/Rx pkt buffer */
245 udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size;
246 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
247 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
248 __GFP_ZERO, 2);
249 if (!udev->ll2_buf) {
250 rc = -ENOMEM;
251 goto exit_alloc_buf;
252 }
253 return rc;
254
255 exit_alloc_buf:
256 free_page((unsigned long)udev->ll2_ring);
257 udev->ll2_ring = NULL;
258 exit_alloc_ring:
259 return rc;
260 }
261
262 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
263 {
264 struct qedi_uio_dev *udev = NULL;
265 int rc = 0;
266
267 list_for_each_entry(udev, &qedi_udev_list, list) {
268 if (udev->pdev == qedi->pdev) {
269 udev->qedi = qedi;
270 if (__qedi_alloc_uio_rings(udev)) {
271 udev->qedi = NULL;
272 return -ENOMEM;
273 }
274 qedi->udev = udev;
275 return 0;
276 }
277 }
278
279 udev = kzalloc(sizeof(*udev), GFP_KERNEL);
280 if (!udev)
281 goto err_udev;
282
283 udev->uio_dev = -1;
284
285 udev->qedi = qedi;
286 udev->pdev = qedi->pdev;
287
288 rc = __qedi_alloc_uio_rings(udev);
289 if (rc)
290 goto err_uctrl;
291
292 list_add(&udev->list, &qedi_udev_list);
293
294 pci_dev_get(udev->pdev);
295 qedi->udev = udev;
296
297 udev->tx_pkt = udev->ll2_buf;
298 udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size;
299 return 0;
300
301 err_uctrl:
302 kfree(udev);
303 err_udev:
304 return -ENOMEM;
305 }
306
307 static int qedi_init_uio(struct qedi_ctx *qedi)
308 {
309 struct qedi_uio_dev *udev = qedi->udev;
310 struct uio_info *uinfo;
311 int ret = 0;
312
313 if (!udev)
314 return -ENOMEM;
315
316 uinfo = &udev->qedi_uinfo;
317
318 uinfo->mem[0].addr = (unsigned long)udev->uctrl;
319 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
320 uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
321
322 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
323 uinfo->mem[1].size = udev->ll2_ring_size;
324 uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
325
326 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
327 uinfo->mem[2].size = udev->ll2_buf_size;
328 uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
329
330 uinfo->name = "qedi_uio";
331 uinfo->version = QEDI_MODULE_VERSION;
332 uinfo->irq = UIO_IRQ_CUSTOM;
333
334 uinfo->open = qedi_uio_open;
335 uinfo->release = qedi_uio_close;
336
337 if (udev->uio_dev == -1) {
338 if (!uinfo->priv) {
339 uinfo->priv = udev;
340
341 ret = uio_register_device(&udev->pdev->dev, uinfo);
342 if (ret) {
343 QEDI_ERR(&qedi->dbg_ctx,
344 "UIO registration failed\n");
345 }
346 }
347 }
348
349 return ret;
350 }
351
352 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
353 struct qed_sb_info *sb_info, u16 sb_id)
354 {
355 struct status_block *sb_virt;
356 dma_addr_t sb_phys;
357 int ret;
358
359 sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
360 sizeof(struct status_block), &sb_phys,
361 GFP_KERNEL);
362 if (!sb_virt) {
363 QEDI_ERR(&qedi->dbg_ctx,
364 "Status block allocation failed for id = %d.\n",
365 sb_id);
366 return -ENOMEM;
367 }
368
369 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
370 sb_id, QED_SB_TYPE_STORAGE);
371 if (ret) {
372 dma_free_coherent(&qedi->pdev->dev, sizeof(*sb_virt), sb_virt, sb_phys);
373 QEDI_ERR(&qedi->dbg_ctx,
374 "Status block initialization failed for id = %d.\n",
375 sb_id);
376 return ret;
377 }
378
379 return 0;
380 }
381
382 static void qedi_free_sb(struct qedi_ctx *qedi)
383 {
384 struct qed_sb_info *sb_info;
385 int id;
386
387 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
388 sb_info = &qedi->sb_array[id];
389 if (sb_info->sb_virt)
390 dma_free_coherent(&qedi->pdev->dev,
391 sizeof(*sb_info->sb_virt),
392 (void *)sb_info->sb_virt,
393 sb_info->sb_phys);
394 }
395 }
396
397 static void qedi_free_fp(struct qedi_ctx *qedi)
398 {
399 kfree(qedi->fp_array);
400 kfree(qedi->sb_array);
401 }
402
403 static void qedi_destroy_fp(struct qedi_ctx *qedi)
404 {
405 qedi_free_sb(qedi);
406 qedi_free_fp(qedi);
407 }
408
409 static int qedi_alloc_fp(struct qedi_ctx *qedi)
410 {
411 int ret = 0;
412
413 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
414 sizeof(struct qedi_fastpath), GFP_KERNEL);
415 if (!qedi->fp_array) {
416 QEDI_ERR(&qedi->dbg_ctx,
417 "fastpath fp array allocation failed.\n");
418 return -ENOMEM;
419 }
420
421 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
422 sizeof(struct qed_sb_info), GFP_KERNEL);
423 if (!qedi->sb_array) {
424 QEDI_ERR(&qedi->dbg_ctx,
425 "fastpath sb array allocation failed.\n");
426 ret = -ENOMEM;
427 goto free_fp;
428 }
429
430 return ret;
431
432 free_fp:
433 qedi_free_fp(qedi);
434 return ret;
435 }
436
437 static void qedi_int_fp(struct qedi_ctx *qedi)
438 {
439 struct qedi_fastpath *fp;
440 int id;
441
442 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
443 sizeof(*qedi->fp_array));
444 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
445 sizeof(*qedi->sb_array));
446
447 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
448 fp = &qedi->fp_array[id];
449 fp->sb_info = &qedi->sb_array[id];
450 fp->sb_id = id;
451 fp->qedi = qedi;
452 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
453 "qedi", id);
454
455 /* fp_array[i] ---- irq cookie
456 * So init data which is needed in int ctx
457 */
458 }
459 }
460
461 static int qedi_prepare_fp(struct qedi_ctx *qedi)
462 {
463 struct qedi_fastpath *fp;
464 int id, ret = 0;
465
466 ret = qedi_alloc_fp(qedi);
467 if (ret)
468 goto err;
469
470 qedi_int_fp(qedi);
471
472 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
473 fp = &qedi->fp_array[id];
474 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
475 if (ret) {
476 QEDI_ERR(&qedi->dbg_ctx,
477 "SB allocation and initialization failed.\n");
478 ret = -EIO;
479 goto err_init;
480 }
481 }
482
483 return 0;
484
485 err_init:
486 qedi_free_sb(qedi);
487 qedi_free_fp(qedi);
488 err:
489 return ret;
490 }
491
492 static int qedi_setup_cid_que(struct qedi_ctx *qedi)
493 {
494 int i;
495
496 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
497 sizeof(u32), GFP_KERNEL);
498 if (!qedi->cid_que.cid_que_base)
499 return -ENOMEM;
500
501 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
502 sizeof(struct qedi_conn *),
503 GFP_KERNEL);
504 if (!qedi->cid_que.conn_cid_tbl) {
505 kfree(qedi->cid_que.cid_que_base);
506 qedi->cid_que.cid_que_base = NULL;
507 return -ENOMEM;
508 }
509
510 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
511 qedi->cid_que.cid_q_prod_idx = 0;
512 qedi->cid_que.cid_q_cons_idx = 0;
513 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
514 qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
515
516 for (i = 0; i < qedi->max_active_conns; i++) {
517 qedi->cid_que.cid_que[i] = i;
518 qedi->cid_que.conn_cid_tbl[i] = NULL;
519 }
520
521 return 0;
522 }
523
524 static void qedi_release_cid_que(struct qedi_ctx *qedi)
525 {
526 kfree(qedi->cid_que.cid_que_base);
527 qedi->cid_que.cid_que_base = NULL;
528
529 kfree(qedi->cid_que.conn_cid_tbl);
530 qedi->cid_que.conn_cid_tbl = NULL;
531 }
532
533 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
534 u16 start_id, u16 next)
535 {
536 id_tbl->start = start_id;
537 id_tbl->max = size;
538 id_tbl->next = next;
539 spin_lock_init(&id_tbl->lock);
540 id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
541 if (!id_tbl->table)
542 return -ENOMEM;
543
544 return 0;
545 }
546
547 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
548 {
549 kfree(id_tbl->table);
550 id_tbl->table = NULL;
551 }
552
553 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
554 {
555 int ret = -1;
556
557 id -= id_tbl->start;
558 if (id >= id_tbl->max)
559 return ret;
560
561 spin_lock(&id_tbl->lock);
562 if (!test_bit(id, id_tbl->table)) {
563 set_bit(id, id_tbl->table);
564 ret = 0;
565 }
566 spin_unlock(&id_tbl->lock);
567 return ret;
568 }
569
570 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
571 {
572 u16 id;
573
574 spin_lock(&id_tbl->lock);
575 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
576 if (id >= id_tbl->max) {
577 id = QEDI_LOCAL_PORT_INVALID;
578 if (id_tbl->next != 0) {
579 id = find_first_zero_bit(id_tbl->table, id_tbl->next);
580 if (id >= id_tbl->next)
581 id = QEDI_LOCAL_PORT_INVALID;
582 }
583 }
584
585 if (id < id_tbl->max) {
586 set_bit(id, id_tbl->table);
587 id_tbl->next = (id + 1) & (id_tbl->max - 1);
588 id += id_tbl->start;
589 }
590
591 spin_unlock(&id_tbl->lock);
592
593 return id;
594 }
595
596 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
597 {
598 if (id == QEDI_LOCAL_PORT_INVALID)
599 return;
600
601 id -= id_tbl->start;
602 if (id >= id_tbl->max)
603 return;
604
605 clear_bit(id, id_tbl->table);
606 }
607
608 static void qedi_cm_free_mem(struct qedi_ctx *qedi)
609 {
610 kfree(qedi->ep_tbl);
611 qedi->ep_tbl = NULL;
612 qedi_free_id_tbl(&qedi->lcl_port_tbl);
613 }
614
615 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
616 {
617 u16 port_id;
618
619 qedi->ep_tbl = kzalloc((qedi->max_active_conns *
620 sizeof(struct qedi_endpoint *)), GFP_KERNEL);
621 if (!qedi->ep_tbl)
622 return -ENOMEM;
623 port_id = get_random_u32_below(QEDI_LOCAL_PORT_RANGE);
624 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
625 QEDI_LOCAL_PORT_MIN, port_id)) {
626 qedi_cm_free_mem(qedi);
627 return -ENOMEM;
628 }
629
630 return 0;
631 }
632
633 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
634 {
635 struct Scsi_Host *shost;
636 struct qedi_ctx *qedi = NULL;
637
638 shost = iscsi_host_alloc(&qedi_host_template,
639 sizeof(struct qedi_ctx), 0);
640 if (!shost) {
641 QEDI_ERR(NULL, "Could not allocate shost\n");
642 goto exit_setup_shost;
643 }
644
645 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1;
646 shost->max_channel = 0;
647 shost->max_lun = ~0;
648 shost->max_cmd_len = 16;
649 shost->transportt = qedi_scsi_transport;
650
651 qedi = iscsi_host_priv(shost);
652 memset(qedi, 0, sizeof(*qedi));
653 qedi->shost = shost;
654 qedi->dbg_ctx.host_no = shost->host_no;
655 qedi->pdev = pdev;
656 qedi->dbg_ctx.pdev = pdev;
657 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
658 qedi->max_sqes = QEDI_SQ_SIZE;
659
660 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
661
662 pci_set_drvdata(pdev, qedi);
663
664 exit_setup_shost:
665 return qedi;
666 }
667
668 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
669 {
670 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
671 struct skb_work_list *work;
672 struct ethhdr *eh;
673
674 if (!qedi) {
675 QEDI_ERR(NULL, "qedi is NULL\n");
676 return -1;
677 }
678
679 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
680 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
681 "UIO DEV is not opened\n");
682 kfree_skb(skb);
683 return 0;
684 }
685
686 eh = (struct ethhdr *)skb->data;
687 /* Undo VLAN encapsulation */
688 if (eh->h_proto == htons(ETH_P_8021Q)) {
689 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
690 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
691 skb_reset_mac_header(skb);
692 }
693
694 /* Filter out non FIP/FCoE frames here to free them faster */
695 if (eh->h_proto != htons(ETH_P_ARP) &&
696 eh->h_proto != htons(ETH_P_IP) &&
697 eh->h_proto != htons(ETH_P_IPV6)) {
698 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
699 "Dropping frame ethertype [0x%x] len [0x%x].\n",
700 eh->h_proto, skb->len);
701 kfree_skb(skb);
702 return 0;
703 }
704
705 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
706 "Allowed frame ethertype [0x%x] len [0x%x].\n",
707 eh->h_proto, skb->len);
708
709 work = kzalloc(sizeof(*work), GFP_ATOMIC);
710 if (!work) {
711 QEDI_WARN(&qedi->dbg_ctx,
712 "Could not allocate work so dropping frame.\n");
713 kfree_skb(skb);
714 return 0;
715 }
716
717 INIT_LIST_HEAD(&work->list);
718 work->skb = skb;
719
720 if (skb_vlan_tag_present(skb))
721 work->vlan_id = skb_vlan_tag_get(skb);
722
723 if (work->vlan_id)
724 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
725
726 spin_lock_bh(&qedi->ll2_lock);
727 list_add_tail(&work->list, &qedi->ll2_skb_list);
728 spin_unlock_bh(&qedi->ll2_lock);
729
730 wake_up_process(qedi->ll2_recv_thread);
731
732 return 0;
733 }
734
735 /* map this skb to iscsiuio mmaped region */
736 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
737 u16 vlan_id)
738 {
739 struct qedi_uio_dev *udev = NULL;
740 struct qedi_uio_ctrl *uctrl = NULL;
741 struct qedi_rx_bd rxbd;
742 struct qedi_rx_bd *p_rxbd;
743 u32 rx_bd_prod;
744 void *pkt;
745 int len = 0;
746 u32 prod;
747
748 if (!qedi) {
749 QEDI_ERR(NULL, "qedi is NULL\n");
750 return -1;
751 }
752
753 udev = qedi->udev;
754 uctrl = udev->uctrl;
755
756 ++uctrl->hw_rx_prod_cnt;
757 prod = (uctrl->hw_rx_prod + 1) % RX_RING;
758
759 pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size);
760 len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size);
761 memcpy(pkt, skb->data, len);
762
763 memset(&rxbd, 0, sizeof(rxbd));
764 rxbd.rx_pkt_index = prod;
765 rxbd.rx_pkt_len = len;
766 rxbd.vlan_id = vlan_id;
767
768 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
769 rx_bd_prod = uctrl->hw_rx_bd_prod;
770 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
771 p_rxbd += rx_bd_prod;
772
773 memcpy(p_rxbd, &rxbd, sizeof(rxbd));
774
775 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
776 "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n",
777 uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod,
778 rxbd.rx_pkt_index, rxbd.rx_pkt_len);
779 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
780 "host_rx_cons [%d] hw_rx_bd_cons [%d].\n",
781 uctrl->host_rx_cons, uctrl->host_rx_bd_cons);
782
783 uctrl->hw_rx_prod = prod;
784
785 /* notify the iscsiuio about new packet */
786 uio_event_notify(&udev->qedi_uinfo);
787
788 return 0;
789 }
790
791 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
792 {
793 struct skb_work_list *work, *work_tmp;
794
795 spin_lock_bh(&qedi->ll2_lock);
796 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
797 list_del(&work->list);
798 kfree_skb(work->skb);
799 kfree(work);
800 }
801 spin_unlock_bh(&qedi->ll2_lock);
802 }
803
804 static int qedi_ll2_recv_thread(void *arg)
805 {
806 struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
807 struct skb_work_list *work, *work_tmp;
808
809 set_user_nice(current, -20);
810
811 while (!kthread_should_stop()) {
812 spin_lock_bh(&qedi->ll2_lock);
813 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
814 list) {
815 list_del(&work->list);
816 qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
817 kfree_skb(work->skb);
818 kfree(work);
819 }
820 set_current_state(TASK_INTERRUPTIBLE);
821 spin_unlock_bh(&qedi->ll2_lock);
822 schedule();
823 }
824
825 __set_current_state(TASK_RUNNING);
826 return 0;
827 }
828
829 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
830 {
831 u8 num_sq_pages;
832 u32 log_page_size;
833 int rval = 0;
834
835
836 num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE;
837
838 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
839
840 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
841 "Number of CQ count is %d\n", qedi->num_queues);
842
843 memset(&qedi->pf_params.iscsi_pf_params, 0,
844 sizeof(qedi->pf_params.iscsi_pf_params));
845
846 qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev,
847 qedi->num_queues * sizeof(struct qedi_glbl_q_params),
848 &qedi->hw_p_cpuq, GFP_KERNEL);
849 if (!qedi->p_cpuq) {
850 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n");
851 rval = -1;
852 goto err_alloc_mem;
853 }
854
855 rval = qedi_alloc_global_queues(qedi);
856 if (rval) {
857 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
858 rval = -1;
859 goto err_alloc_mem;
860 }
861
862 qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
863 qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
864 qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
865 qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
866 qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
867 qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
868 qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
869 qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
870 qedi->pf_params.iscsi_pf_params.two_msl_timer = QED_TWO_MSL_TIMER_DFLT;
871 qedi->pf_params.iscsi_pf_params.tx_sws_timer = QED_TX_SWS_TIMER_DFLT;
872 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
873
874 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
875 if ((1 << log_page_size) == QEDI_PAGE_SIZE)
876 break;
877 }
878 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
879
880 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
881 (u64)qedi->hw_p_cpuq;
882
883 /* RQ BDQ initializations.
884 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
885 * rqe_log_size: 8 for 256B RQE
886 */
887 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
888 /* BDQ address and size */
889 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
890 qedi->bdq_pbl_list_dma;
891 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
892 qedi->bdq_pbl_list_num_entries;
893 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
894
895 /* cq_num_entries: num_tasks + rq_num_entries */
896 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
897
898 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
899 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
900
901 err_alloc_mem:
902 return rval;
903 }
904
905 /* Free DMA coherent memory for array of queue pointers we pass to qed */
906 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
907 {
908 size_t size = 0;
909
910 if (qedi->p_cpuq) {
911 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
912 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq,
913 qedi->hw_p_cpuq);
914 }
915
916 qedi_free_global_queues(qedi);
917
918 kfree(qedi->global_queues);
919 }
920
921 static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block,
922 struct qedi_boot_target *tgt, u8 index)
923 {
924 u32 ipv6_en;
925
926 ipv6_en = !!(block->generic.ctrl_flags &
927 NVM_ISCSI_CFG_GEN_IPV6_ENABLED);
928
929 snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s",
930 block->target[index].target_name.byte);
931
932 tgt->ipv6_en = ipv6_en;
933
934 if (ipv6_en)
935 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n",
936 block->target[index].ipv6_addr.byte);
937 else
938 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n",
939 block->target[index].ipv4_addr.byte);
940 }
941
942 static int qedi_find_boot_info(struct qedi_ctx *qedi,
943 struct qed_mfw_tlv_iscsi *iscsi,
944 struct nvm_iscsi_block *block)
945 {
946 struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL;
947 u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0;
948 struct iscsi_cls_session *cls_sess;
949 struct iscsi_cls_conn *cls_conn;
950 struct qedi_conn *qedi_conn;
951 struct iscsi_session *sess;
952 struct iscsi_conn *conn;
953 char ep_ip_addr[64];
954 int i, ret = 0;
955
956 pri_ctrl_flags = !!(block->target[0].ctrl_flags &
957 NVM_ISCSI_CFG_TARGET_ENABLED);
958 if (pri_ctrl_flags) {
959 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL);
960 if (!pri_tgt)
961 return -1;
962 qedi_get_boot_tgt_info(block, pri_tgt, 0);
963 }
964
965 sec_ctrl_flags = !!(block->target[1].ctrl_flags &
966 NVM_ISCSI_CFG_TARGET_ENABLED);
967 if (sec_ctrl_flags) {
968 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL);
969 if (!sec_tgt) {
970 ret = -1;
971 goto free_tgt;
972 }
973 qedi_get_boot_tgt_info(block, sec_tgt, 1);
974 }
975
976 for (i = 0; i < qedi->max_active_conns; i++) {
977 qedi_conn = qedi_get_conn_from_id(qedi, i);
978 if (!qedi_conn)
979 continue;
980
981 if (qedi_conn->ep->ip_type == TCP_IPV4)
982 snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n",
983 qedi_conn->ep->dst_addr);
984 else
985 snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n",
986 qedi_conn->ep->dst_addr);
987
988 cls_conn = qedi_conn->cls_conn;
989 conn = cls_conn->dd_data;
990 cls_sess = iscsi_conn_to_session(cls_conn);
991 sess = cls_sess->dd_data;
992
993 if (!iscsi_is_session_online(cls_sess))
994 continue;
995
996 if (!sess->targetname)
997 continue;
998
999 if (pri_ctrl_flags) {
1000 if (!strcmp(pri_tgt->iscsi_name, sess->targetname) &&
1001 !strcmp(pri_tgt->ip_addr, ep_ip_addr)) {
1002 found = 1;
1003 break;
1004 }
1005 }
1006
1007 if (sec_ctrl_flags) {
1008 if (!strcmp(sec_tgt->iscsi_name, sess->targetname) &&
1009 !strcmp(sec_tgt->ip_addr, ep_ip_addr)) {
1010 found = 1;
1011 break;
1012 }
1013 }
1014 }
1015
1016 if (found) {
1017 if (conn->hdrdgst_en) {
1018 iscsi->header_digest_set = true;
1019 iscsi->header_digest = 1;
1020 }
1021
1022 if (conn->datadgst_en) {
1023 iscsi->data_digest_set = true;
1024 iscsi->data_digest = 1;
1025 }
1026 iscsi->boot_taget_portal_set = true;
1027 iscsi->boot_taget_portal = sess->tpgt;
1028
1029 } else {
1030 ret = -1;
1031 }
1032
1033 if (sec_ctrl_flags)
1034 kfree(sec_tgt);
1035 free_tgt:
1036 if (pri_ctrl_flags)
1037 kfree(pri_tgt);
1038
1039 return ret;
1040 }
1041
1042 static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
1043 {
1044 struct qedi_ctx *qedi;
1045
1046 if (!dev) {
1047 QEDI_INFO(NULL, QEDI_LOG_EVT,
1048 "dev is NULL so ignoring get_generic_tlv_data request.\n");
1049 return;
1050 }
1051 qedi = (struct qedi_ctx *)dev;
1052
1053 memset(data, 0, sizeof(struct qed_generic_tlvs));
1054 ether_addr_copy(data->mac[0], qedi->mac);
1055 }
1056
1057 /*
1058 * Protocol TLV handler
1059 */
1060 static void qedi_get_protocol_tlv_data(void *dev, void *data)
1061 {
1062 struct qed_mfw_tlv_iscsi *iscsi = data;
1063 struct qed_iscsi_stats *fw_iscsi_stats;
1064 struct nvm_iscsi_block *block = NULL;
1065 u32 chap_en = 0, mchap_en = 0;
1066 struct qedi_ctx *qedi = dev;
1067 int rval = 0;
1068
1069 fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL);
1070 if (!fw_iscsi_stats) {
1071 QEDI_ERR(&qedi->dbg_ctx,
1072 "Could not allocate memory for fw_iscsi_stats.\n");
1073 goto exit_get_data;
1074 }
1075
1076 mutex_lock(&qedi->stats_lock);
1077 /* Query firmware for offload stats */
1078 qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats);
1079 mutex_unlock(&qedi->stats_lock);
1080
1081 iscsi->rx_frames_set = true;
1082 iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt;
1083 iscsi->rx_bytes_set = true;
1084 iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt;
1085 iscsi->tx_frames_set = true;
1086 iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt;
1087 iscsi->tx_bytes_set = true;
1088 iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt;
1089 iscsi->frame_size_set = true;
1090 iscsi->frame_size = qedi->ll2_mtu;
1091 block = qedi_get_nvram_block(qedi);
1092 if (block) {
1093 chap_en = !!(block->generic.ctrl_flags &
1094 NVM_ISCSI_CFG_GEN_CHAP_ENABLED);
1095 mchap_en = !!(block->generic.ctrl_flags &
1096 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED);
1097
1098 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false;
1099 iscsi->auth_method = 1;
1100 if (chap_en)
1101 iscsi->auth_method = 2;
1102 if (mchap_en)
1103 iscsi->auth_method = 3;
1104
1105 iscsi->tx_desc_size_set = true;
1106 iscsi->tx_desc_size = QEDI_SQ_SIZE;
1107 iscsi->rx_desc_size_set = true;
1108 iscsi->rx_desc_size = QEDI_CQ_SIZE;
1109
1110 /* tpgt, hdr digest, data digest */
1111 rval = qedi_find_boot_info(qedi, iscsi, block);
1112 if (rval)
1113 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1114 "Boot target not set");
1115 }
1116
1117 kfree(fw_iscsi_stats);
1118 exit_get_data:
1119 return;
1120 }
1121
1122 void qedi_schedule_hw_err_handler(void *dev,
1123 enum qed_hw_err_type err_type)
1124 {
1125 struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1126 unsigned long override_flags = qedi_flags_override;
1127
1128 if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags))
1129 qedi->qedi_err_flags = qedi_flags_override;
1130
1131 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1132 "HW error handler scheduled, err=%d err_flags=0x%x\n",
1133 err_type, qedi->qedi_err_flags);
1134
1135 switch (err_type) {
1136 case QED_HW_ERR_FAN_FAIL:
1137 schedule_delayed_work(&qedi->board_disable_work, 0);
1138 break;
1139 case QED_HW_ERR_MFW_RESP_FAIL:
1140 case QED_HW_ERR_HW_ATTN:
1141 case QED_HW_ERR_DMAE_FAIL:
1142 case QED_HW_ERR_RAMROD_FAIL:
1143 case QED_HW_ERR_FW_ASSERT:
1144 /* Prevent HW attentions from being reasserted */
1145 if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags))
1146 qedi_ops->common->attn_clr_enable(qedi->cdev, true);
1147
1148 if (err_type == QED_HW_ERR_RAMROD_FAIL &&
1149 test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags))
1150 qedi_ops->common->recovery_process(qedi->cdev);
1151
1152 break;
1153 default:
1154 break;
1155 }
1156 }
1157
1158 static void qedi_schedule_recovery_handler(void *dev)
1159 {
1160 struct qedi_ctx *qedi = dev;
1161
1162 QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n");
1163
1164 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags))
1165 return;
1166
1167 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1168
1169 schedule_delayed_work(&qedi->recovery_work, 0);
1170 }
1171
1172 static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session)
1173 {
1174 struct iscsi_session *session = cls_session->dd_data;
1175 struct iscsi_conn *conn = session->leadconn;
1176 struct qedi_conn *qedi_conn = conn->dd_data;
1177
1178 qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1179 }
1180
1181 static void qedi_link_update(void *dev, struct qed_link_output *link)
1182 {
1183 struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1184
1185 if (link->link_up) {
1186 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
1187 atomic_set(&qedi->link_state, QEDI_LINK_UP);
1188 } else {
1189 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1190 "Link Down event.\n");
1191 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1192 iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery);
1193 }
1194 }
1195
1196 static struct qed_iscsi_cb_ops qedi_cb_ops = {
1197 {
1198 .link_update = qedi_link_update,
1199 .schedule_recovery_handler = qedi_schedule_recovery_handler,
1200 .schedule_hw_err_handler = qedi_schedule_hw_err_handler,
1201 .get_protocol_tlv_data = qedi_get_protocol_tlv_data,
1202 .get_generic_tlv_data = qedi_get_generic_tlv_data,
1203 }
1204 };
1205
1206 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
1207 u16 que_idx, struct qedi_percpu_s *p)
1208 {
1209 struct qedi_work *qedi_work;
1210 struct qedi_conn *q_conn;
1211 struct qedi_cmd *qedi_cmd;
1212 u32 iscsi_cid;
1213 int rc = 0;
1214
1215 iscsi_cid = cqe->cqe_common.conn_id;
1216 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
1217 if (!q_conn) {
1218 QEDI_WARN(&qedi->dbg_ctx,
1219 "Session no longer exists for cid=0x%x!!\n",
1220 iscsi_cid);
1221 return -1;
1222 }
1223
1224 switch (cqe->cqe_common.cqe_type) {
1225 case ISCSI_CQE_TYPE_SOLICITED:
1226 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
1227 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
1228 if (!qedi_cmd) {
1229 rc = -1;
1230 break;
1231 }
1232 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
1233 qedi_cmd->cqe_work.qedi = qedi;
1234 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
1235 qedi_cmd->cqe_work.que_idx = que_idx;
1236 qedi_cmd->cqe_work.is_solicited = true;
1237 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
1238 break;
1239 case ISCSI_CQE_TYPE_UNSOLICITED:
1240 case ISCSI_CQE_TYPE_DUMMY:
1241 case ISCSI_CQE_TYPE_TASK_CLEANUP:
1242 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
1243 if (!qedi_work) {
1244 rc = -1;
1245 break;
1246 }
1247 INIT_LIST_HEAD(&qedi_work->list);
1248 qedi_work->qedi = qedi;
1249 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
1250 qedi_work->que_idx = que_idx;
1251 qedi_work->is_solicited = false;
1252 list_add_tail(&qedi_work->list, &p->work_list);
1253 break;
1254 default:
1255 rc = -1;
1256 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
1257 }
1258 return rc;
1259 }
1260
1261 static bool qedi_process_completions(struct qedi_fastpath *fp)
1262 {
1263 struct qedi_ctx *qedi = fp->qedi;
1264 struct qed_sb_info *sb_info = fp->sb_info;
1265 struct status_block *sb = sb_info->sb_virt;
1266 struct qedi_percpu_s *p = NULL;
1267 struct global_queue *que;
1268 u16 prod_idx;
1269 unsigned long flags;
1270 union iscsi_cqe *cqe;
1271 int cpu;
1272 int ret;
1273
1274 /* Get the current firmware producer index */
1275 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1276
1277 if (prod_idx >= QEDI_CQ_SIZE)
1278 prod_idx = prod_idx % QEDI_CQ_SIZE;
1279
1280 que = qedi->global_queues[fp->sb_id];
1281 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1282 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
1283 que, prod_idx, que->cq_cons_idx, fp->sb_id);
1284
1285 qedi->intr_cpu = fp->sb_id;
1286 cpu = smp_processor_id();
1287 p = &per_cpu(qedi_percpu, cpu);
1288
1289 if (unlikely(!p->iothread))
1290 WARN_ON(1);
1291
1292 spin_lock_irqsave(&p->p_work_lock, flags);
1293 while (que->cq_cons_idx != prod_idx) {
1294 cqe = &que->cq[que->cq_cons_idx];
1295
1296 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1297 "cqe=%p prod_idx=%d cons_idx=%d.\n",
1298 cqe, prod_idx, que->cq_cons_idx);
1299
1300 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1301 if (ret)
1302 QEDI_WARN(&qedi->dbg_ctx,
1303 "Dropping CQE 0x%x for cid=0x%x.\n",
1304 que->cq_cons_idx, cqe->cqe_common.conn_id);
1305
1306 que->cq_cons_idx++;
1307 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1308 que->cq_cons_idx = 0;
1309 }
1310 wake_up_process(p->iothread);
1311 spin_unlock_irqrestore(&p->p_work_lock, flags);
1312
1313 return true;
1314 }
1315
1316 static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1317 {
1318 struct qedi_ctx *qedi = fp->qedi;
1319 struct global_queue *que;
1320 struct qed_sb_info *sb_info = fp->sb_info;
1321 struct status_block *sb = sb_info->sb_virt;
1322 u16 prod_idx;
1323
1324 barrier();
1325
1326 /* Get the current firmware producer index */
1327 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1328
1329 /* Get the pointer to the global CQ this completion is on */
1330 que = qedi->global_queues[fp->sb_id];
1331
1332 /* prod idx wrap around uint16 */
1333 if (prod_idx >= QEDI_CQ_SIZE)
1334 prod_idx = prod_idx % QEDI_CQ_SIZE;
1335
1336 return (que->cq_cons_idx != prod_idx);
1337 }
1338
1339 /* MSI-X fastpath handler code */
1340 static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1341 {
1342 struct qedi_fastpath *fp = dev_id;
1343 struct qedi_ctx *qedi = fp->qedi;
1344 bool wake_io_thread = true;
1345
1346 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1347
1348 process_again:
1349 wake_io_thread = qedi_process_completions(fp);
1350 if (wake_io_thread) {
1351 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1352 "process already running\n");
1353 }
1354
1355 if (!qedi_fp_has_work(fp))
1356 qed_sb_update_sb_idx(fp->sb_info);
1357
1358 /* Check for more work */
1359 rmb();
1360
1361 if (!qedi_fp_has_work(fp))
1362 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1363 else
1364 goto process_again;
1365
1366 return IRQ_HANDLED;
1367 }
1368
1369 /* simd handler for MSI/INTa */
1370 static void qedi_simd_int_handler(void *cookie)
1371 {
1372 /* Cookie is qedi_ctx struct */
1373 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1374
1375 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1376 }
1377
1378 #define QEDI_SIMD_HANDLER_NUM 0
1379 static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1380 {
1381 int i;
1382 u16 idx;
1383
1384 if (qedi->int_info.msix_cnt) {
1385 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1386 idx = i * qedi->dev_info.common.num_hwfns +
1387 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1388
1389 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1390 "Freeing IRQ #%d vector_idx=%d.\n", i, idx);
1391
1392 synchronize_irq(qedi->int_info.msix[idx].vector);
1393 irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1394 NULL);
1395 free_irq(qedi->int_info.msix[idx].vector,
1396 &qedi->fp_array[i]);
1397 }
1398 } else {
1399 qedi_ops->common->simd_handler_clean(qedi->cdev,
1400 QEDI_SIMD_HANDLER_NUM);
1401 }
1402
1403 qedi->int_info.used_cnt = 0;
1404 qedi_ops->common->set_fp_int(qedi->cdev, 0);
1405 }
1406
1407 static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1408 {
1409 int i, rc, cpu;
1410 u16 idx;
1411
1412 cpu = cpumask_first(cpu_online_mask);
1413 for (i = 0; i < qedi->msix_count; i++) {
1414 idx = i * qedi->dev_info.common.num_hwfns +
1415 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1416
1417 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1418 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
1419 qedi->dev_info.common.num_hwfns,
1420 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
1421
1422 rc = request_irq(qedi->int_info.msix[idx].vector,
1423 qedi_msix_handler, 0, "qedi",
1424 &qedi->fp_array[i]);
1425 if (rc) {
1426 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1427 qedi_sync_free_irqs(qedi);
1428 return rc;
1429 }
1430 qedi->int_info.used_cnt++;
1431 rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1432 get_cpu_mask(cpu));
1433 cpu = cpumask_next(cpu, cpu_online_mask);
1434 }
1435
1436 return 0;
1437 }
1438
1439 static int qedi_setup_int(struct qedi_ctx *qedi)
1440 {
1441 int rc = 0;
1442
1443 rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues);
1444 if (rc < 0)
1445 goto exit_setup_int;
1446
1447 qedi->msix_count = rc;
1448
1449 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1450 if (rc)
1451 goto exit_setup_int;
1452
1453 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1454 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1455 qedi->int_info.msix_cnt, num_online_cpus());
1456
1457 if (qedi->int_info.msix_cnt) {
1458 rc = qedi_request_msix_irq(qedi);
1459 goto exit_setup_int;
1460 } else {
1461 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1462 QEDI_SIMD_HANDLER_NUM,
1463 qedi_simd_int_handler);
1464 qedi->int_info.used_cnt = 1;
1465 }
1466
1467 exit_setup_int:
1468 return rc;
1469 }
1470
1471 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1472 {
1473 if (qedi->iscsi_image)
1474 dma_free_coherent(&qedi->pdev->dev,
1475 sizeof(struct qedi_nvm_iscsi_image),
1476 qedi->iscsi_image, qedi->nvm_buf_dma);
1477 }
1478
1479 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1480 {
1481 qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev,
1482 sizeof(struct qedi_nvm_iscsi_image),
1483 &qedi->nvm_buf_dma, GFP_KERNEL);
1484 if (!qedi->iscsi_image) {
1485 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1486 return -ENOMEM;
1487 }
1488 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1489 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
1490 qedi->nvm_buf_dma);
1491
1492 return 0;
1493 }
1494
1495 static void qedi_free_bdq(struct qedi_ctx *qedi)
1496 {
1497 int i;
1498
1499 if (qedi->bdq_pbl_list)
1500 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
1501 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1502
1503 if (qedi->bdq_pbl)
1504 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1505 qedi->bdq_pbl, qedi->bdq_pbl_dma);
1506
1507 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1508 if (qedi->bdq[i].buf_addr) {
1509 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1510 qedi->bdq[i].buf_addr,
1511 qedi->bdq[i].buf_dma);
1512 }
1513 }
1514 }
1515
1516 static void qedi_free_global_queues(struct qedi_ctx *qedi)
1517 {
1518 int i;
1519 struct global_queue **gl = qedi->global_queues;
1520
1521 for (i = 0; i < qedi->num_queues; i++) {
1522 if (!gl[i])
1523 continue;
1524
1525 if (gl[i]->cq)
1526 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1527 gl[i]->cq, gl[i]->cq_dma);
1528 if (gl[i]->cq_pbl)
1529 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1530 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1531
1532 kfree(gl[i]);
1533 }
1534 qedi_free_bdq(qedi);
1535 qedi_free_nvm_iscsi_cfg(qedi);
1536 }
1537
1538 static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1539 {
1540 int i;
1541 struct scsi_bd *pbl;
1542 u64 *list;
1543
1544 /* Alloc dma memory for BDQ buffers */
1545 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1546 qedi->bdq[i].buf_addr =
1547 dma_alloc_coherent(&qedi->pdev->dev,
1548 QEDI_BDQ_BUF_SIZE,
1549 &qedi->bdq[i].buf_dma,
1550 GFP_KERNEL);
1551 if (!qedi->bdq[i].buf_addr) {
1552 QEDI_ERR(&qedi->dbg_ctx,
1553 "Could not allocate BDQ buffer %d.\n", i);
1554 return -ENOMEM;
1555 }
1556 }
1557
1558 /* Alloc dma memory for BDQ page buffer list */
1559 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
1560 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE);
1561 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1562
1563 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1564 qedi->rq_num_entries);
1565
1566 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1567 qedi->bdq_pbl_mem_size,
1568 &qedi->bdq_pbl_dma, GFP_KERNEL);
1569 if (!qedi->bdq_pbl) {
1570 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1571 return -ENOMEM;
1572 }
1573
1574 /*
1575 * Populate BDQ PBL with physical and virtual address of individual
1576 * BDQ buffers
1577 */
1578 pbl = (struct scsi_bd *)qedi->bdq_pbl;
1579 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1580 pbl->address.hi =
1581 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1582 pbl->address.lo =
1583 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1584 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1585 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1586 pbl, pbl->address.hi, pbl->address.lo, i);
1587 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
1588 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
1589 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
1590 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
1591 pbl++;
1592 }
1593
1594 /* Allocate list of PBL pages */
1595 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
1596 QEDI_PAGE_SIZE,
1597 &qedi->bdq_pbl_list_dma,
1598 GFP_KERNEL);
1599 if (!qedi->bdq_pbl_list) {
1600 QEDI_ERR(&qedi->dbg_ctx,
1601 "Could not allocate list of PBL pages.\n");
1602 return -ENOMEM;
1603 }
1604
1605 /*
1606 * Now populate PBL list with pages that contain pointers to the
1607 * individual buffers.
1608 */
1609 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
1610 QEDI_PAGE_SIZE;
1611 list = (u64 *)qedi->bdq_pbl_list;
1612 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1613 *list = qedi->bdq_pbl_dma;
1614 list++;
1615 }
1616
1617 return 0;
1618 }
1619
1620 static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1621 {
1622 u32 *list;
1623 int i;
1624 int status;
1625 u32 *pbl;
1626 dma_addr_t page;
1627 int num_pages;
1628
1629 /*
1630 * Number of global queues (CQ / RQ). This should
1631 * be <= number of available MSIX vectors for the PF
1632 */
1633 if (!qedi->num_queues) {
1634 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1635 return -ENOMEM;
1636 }
1637
1638 /* Make sure we allocated the PBL that will contain the physical
1639 * addresses of our queues
1640 */
1641 if (!qedi->p_cpuq) {
1642 status = -EINVAL;
1643 goto mem_alloc_failure;
1644 }
1645
1646 qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1647 qedi->num_queues), GFP_KERNEL);
1648 if (!qedi->global_queues) {
1649 QEDI_ERR(&qedi->dbg_ctx,
1650 "Unable to allocate global queues array ptr memory\n");
1651 return -ENOMEM;
1652 }
1653 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1654 "qedi->global_queues=%p.\n", qedi->global_queues);
1655
1656 /* Allocate DMA coherent buffers for BDQ */
1657 status = qedi_alloc_bdq(qedi);
1658 if (status)
1659 goto mem_alloc_failure;
1660
1661 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
1662 status = qedi_alloc_nvm_iscsi_cfg(qedi);
1663 if (status)
1664 goto mem_alloc_failure;
1665
1666 /* Allocate a CQ and an associated PBL for each MSI-X
1667 * vector.
1668 */
1669 for (i = 0; i < qedi->num_queues; i++) {
1670 qedi->global_queues[i] =
1671 kzalloc(sizeof(*qedi->global_queues[0]),
1672 GFP_KERNEL);
1673 if (!qedi->global_queues[i]) {
1674 QEDI_ERR(&qedi->dbg_ctx,
1675 "Unable to allocation global queue %d.\n", i);
1676 status = -ENOMEM;
1677 goto mem_alloc_failure;
1678 }
1679
1680 qedi->global_queues[i]->cq_mem_size =
1681 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1682 qedi->global_queues[i]->cq_mem_size =
1683 (qedi->global_queues[i]->cq_mem_size +
1684 (QEDI_PAGE_SIZE - 1));
1685
1686 qedi->global_queues[i]->cq_pbl_size =
1687 (qedi->global_queues[i]->cq_mem_size /
1688 QEDI_PAGE_SIZE) * sizeof(void *);
1689 qedi->global_queues[i]->cq_pbl_size =
1690 (qedi->global_queues[i]->cq_pbl_size +
1691 (QEDI_PAGE_SIZE - 1));
1692
1693 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev,
1694 qedi->global_queues[i]->cq_mem_size,
1695 &qedi->global_queues[i]->cq_dma,
1696 GFP_KERNEL);
1697
1698 if (!qedi->global_queues[i]->cq) {
1699 QEDI_WARN(&qedi->dbg_ctx,
1700 "Could not allocate cq.\n");
1701 status = -ENOMEM;
1702 goto mem_alloc_failure;
1703 }
1704 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1705 qedi->global_queues[i]->cq_pbl_size,
1706 &qedi->global_queues[i]->cq_pbl_dma,
1707 GFP_KERNEL);
1708
1709 if (!qedi->global_queues[i]->cq_pbl) {
1710 QEDI_WARN(&qedi->dbg_ctx,
1711 "Could not allocate cq PBL.\n");
1712 status = -ENOMEM;
1713 goto mem_alloc_failure;
1714 }
1715
1716 /* Create PBL */
1717 num_pages = qedi->global_queues[i]->cq_mem_size /
1718 QEDI_PAGE_SIZE;
1719 page = qedi->global_queues[i]->cq_dma;
1720 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1721
1722 while (num_pages--) {
1723 *pbl = (u32)page;
1724 pbl++;
1725 *pbl = (u32)((u64)page >> 32);
1726 pbl++;
1727 page += QEDI_PAGE_SIZE;
1728 }
1729 }
1730
1731 list = (u32 *)qedi->p_cpuq;
1732
1733 /*
1734 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
1735 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
1736 * to the physical address which contains an array of pointers to the
1737 * physical addresses of the specific queue pages.
1738 */
1739 for (i = 0; i < qedi->num_queues; i++) {
1740 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1741 list++;
1742 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1743 list++;
1744
1745 *list = (u32)0;
1746 list++;
1747 *list = (u32)((u64)0 >> 32);
1748 list++;
1749 }
1750
1751 return 0;
1752
1753 mem_alloc_failure:
1754 qedi_free_global_queues(qedi);
1755 return status;
1756 }
1757
1758 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1759 {
1760 int rval = 0;
1761 u32 *pbl;
1762 dma_addr_t page;
1763 int num_pages;
1764
1765 if (!ep)
1766 return -EIO;
1767
1768 /* Calculate appropriate queue and PBL sizes */
1769 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1770 ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1771
1772 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1773 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1774
1775 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1776 &ep->sq_dma, GFP_KERNEL);
1777 if (!ep->sq) {
1778 QEDI_WARN(&qedi->dbg_ctx,
1779 "Could not allocate send queue.\n");
1780 rval = -ENOMEM;
1781 goto out;
1782 }
1783 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1784 &ep->sq_pbl_dma, GFP_KERNEL);
1785 if (!ep->sq_pbl) {
1786 QEDI_WARN(&qedi->dbg_ctx,
1787 "Could not allocate send queue PBL.\n");
1788 rval = -ENOMEM;
1789 goto out_free_sq;
1790 }
1791
1792 /* Create PBL */
1793 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1794 page = ep->sq_dma;
1795 pbl = (u32 *)ep->sq_pbl;
1796
1797 while (num_pages--) {
1798 *pbl = (u32)page;
1799 pbl++;
1800 *pbl = (u32)((u64)page >> 32);
1801 pbl++;
1802 page += QEDI_PAGE_SIZE;
1803 }
1804
1805 return rval;
1806
1807 out_free_sq:
1808 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1809 ep->sq_dma);
1810 out:
1811 return rval;
1812 }
1813
1814 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1815 {
1816 if (ep->sq_pbl)
1817 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1818 ep->sq_pbl_dma);
1819 if (ep->sq)
1820 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1821 ep->sq_dma);
1822 }
1823
1824 int qedi_get_task_idx(struct qedi_ctx *qedi)
1825 {
1826 s16 tmp_idx;
1827
1828 again:
1829 tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1830 MAX_ISCSI_TASK_ENTRIES);
1831
1832 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1833 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1834 tmp_idx = -1;
1835 goto err_idx;
1836 }
1837
1838 if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1839 goto again;
1840
1841 err_idx:
1842 return tmp_idx;
1843 }
1844
1845 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1846 {
1847 if (!test_and_clear_bit(idx, qedi->task_idx_map))
1848 QEDI_ERR(&qedi->dbg_ctx,
1849 "FW task context, already cleared, tid=0x%x\n", idx);
1850 }
1851
1852 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1853 struct qedi_cmd *cmd)
1854 {
1855 qedi->itt_map[tid].itt = proto_itt;
1856 qedi->itt_map[tid].p_cmd = cmd;
1857
1858 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1859 "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1860 qedi->itt_map[tid].itt);
1861 }
1862
1863 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1864 {
1865 u16 i;
1866
1867 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1868 if (qedi->itt_map[i].itt == itt) {
1869 *tid = i;
1870 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1871 "Ref itt=0x%x, found at tid=0x%x\n",
1872 itt, *tid);
1873 return;
1874 }
1875 }
1876
1877 WARN_ON(1);
1878 }
1879
1880 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1881 {
1882 *proto_itt = qedi->itt_map[tid].itt;
1883 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1884 "Get itt map tid [0x%x with proto itt[0x%x]",
1885 tid, *proto_itt);
1886 }
1887
1888 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1889 {
1890 struct qedi_cmd *cmd = NULL;
1891
1892 if (tid >= MAX_ISCSI_TASK_ENTRIES)
1893 return NULL;
1894
1895 cmd = qedi->itt_map[tid].p_cmd;
1896 if (cmd->task_id != tid)
1897 return NULL;
1898
1899 qedi->itt_map[tid].p_cmd = NULL;
1900
1901 return cmd;
1902 }
1903
1904 static int qedi_alloc_itt(struct qedi_ctx *qedi)
1905 {
1906 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1907 sizeof(struct qedi_itt_map), GFP_KERNEL);
1908 if (!qedi->itt_map) {
1909 QEDI_ERR(&qedi->dbg_ctx,
1910 "Unable to allocate itt map array memory\n");
1911 return -ENOMEM;
1912 }
1913 return 0;
1914 }
1915
1916 static void qedi_free_itt(struct qedi_ctx *qedi)
1917 {
1918 kfree(qedi->itt_map);
1919 }
1920
1921 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1922 .rx_cb = qedi_ll2_rx,
1923 .tx_cb = NULL,
1924 };
1925
1926 static int qedi_percpu_io_thread(void *arg)
1927 {
1928 struct qedi_percpu_s *p = arg;
1929 struct qedi_work *work, *tmp;
1930 unsigned long flags;
1931 LIST_HEAD(work_list);
1932
1933 set_user_nice(current, -20);
1934
1935 while (!kthread_should_stop()) {
1936 spin_lock_irqsave(&p->p_work_lock, flags);
1937 while (!list_empty(&p->work_list)) {
1938 list_splice_init(&p->work_list, &work_list);
1939 spin_unlock_irqrestore(&p->p_work_lock, flags);
1940
1941 list_for_each_entry_safe(work, tmp, &work_list, list) {
1942 list_del_init(&work->list);
1943 qedi_fp_process_cqes(work);
1944 if (!work->is_solicited)
1945 kfree(work);
1946 }
1947 cond_resched();
1948 spin_lock_irqsave(&p->p_work_lock, flags);
1949 }
1950 set_current_state(TASK_INTERRUPTIBLE);
1951 spin_unlock_irqrestore(&p->p_work_lock, flags);
1952 schedule();
1953 }
1954 __set_current_state(TASK_RUNNING);
1955
1956 return 0;
1957 }
1958
1959 static int qedi_cpu_online(unsigned int cpu)
1960 {
1961 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1962 struct task_struct *thread;
1963
1964 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1965 cpu_to_node(cpu),
1966 "qedi_thread/%d", cpu);
1967 if (IS_ERR(thread))
1968 return PTR_ERR(thread);
1969
1970 kthread_bind(thread, cpu);
1971 p->iothread = thread;
1972 wake_up_process(thread);
1973 return 0;
1974 }
1975
1976 static int qedi_cpu_offline(unsigned int cpu)
1977 {
1978 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1979 struct qedi_work *work, *tmp;
1980 struct task_struct *thread;
1981 unsigned long flags;
1982
1983 spin_lock_irqsave(&p->p_work_lock, flags);
1984 thread = p->iothread;
1985 p->iothread = NULL;
1986
1987 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1988 list_del_init(&work->list);
1989 qedi_fp_process_cqes(work);
1990 if (!work->is_solicited)
1991 kfree(work);
1992 }
1993
1994 spin_unlock_irqrestore(&p->p_work_lock, flags);
1995 if (thread)
1996 kthread_stop(thread);
1997 return 0;
1998 }
1999
2000 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
2001 {
2002 struct qed_ll2_params params;
2003
2004 qedi_recover_all_conns(qedi);
2005
2006 qedi_ops->ll2->stop(qedi->cdev);
2007 qedi_ll2_free_skbs(qedi);
2008
2009 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
2010 qedi->ll2_mtu, mtu);
2011 memset(&params, 0, sizeof(params));
2012 qedi->ll2_mtu = mtu;
2013 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
2014 params.drop_ttl0_packets = 0;
2015 params.rx_vlan_stripping = 1;
2016 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2017 qedi_ops->ll2->start(qedi->cdev, &params);
2018 }
2019
2020 /*
2021 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
2022 * for gaps) for the matching absolute-pf-id of the QEDI device.
2023 */
2024 static struct nvm_iscsi_block *
2025 qedi_get_nvram_block(struct qedi_ctx *qedi)
2026 {
2027 int i;
2028 u8 pf;
2029 u32 flags;
2030 struct nvm_iscsi_block *block;
2031
2032 pf = qedi->dev_info.common.abs_pf_id;
2033 block = &qedi->iscsi_image->iscsi_cfg.block[0];
2034 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
2035 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
2036 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
2037 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
2038 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
2039 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
2040 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
2041 return block;
2042 }
2043 return NULL;
2044 }
2045
2046 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
2047 {
2048 struct qedi_ctx *qedi = data;
2049 struct nvm_iscsi_initiator *initiator;
2050 int rc = 1;
2051 u32 ipv6_en, dhcp_en, ip_len;
2052 struct nvm_iscsi_block *block;
2053 char *fmt, *ip, *sub, *gw;
2054
2055 block = qedi_get_nvram_block(qedi);
2056 if (!block)
2057 return 0;
2058
2059 initiator = &block->initiator;
2060 ipv6_en = block->generic.ctrl_flags &
2061 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2062 dhcp_en = block->generic.ctrl_flags &
2063 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
2064 /* Static IP assignments. */
2065 fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
2066 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
2067 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2068 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
2069 initiator->ipv4.subnet_mask.byte;
2070 gw = ipv6_en ? initiator->ipv6.gateway.byte :
2071 initiator->ipv4.gateway.byte;
2072 /* DHCP IP adjustments. */
2073 fmt = dhcp_en ? "%s\n" : fmt;
2074 if (dhcp_en) {
2075 ip = ipv6_en ? "0::0" : "0.0.0.0";
2076 sub = ip;
2077 gw = ip;
2078 ip_len = ipv6_en ? 5 : 8;
2079 }
2080
2081 switch (type) {
2082 case ISCSI_BOOT_ETH_IP_ADDR:
2083 rc = snprintf(buf, ip_len, fmt, ip);
2084 break;
2085 case ISCSI_BOOT_ETH_SUBNET_MASK:
2086 rc = snprintf(buf, ip_len, fmt, sub);
2087 break;
2088 case ISCSI_BOOT_ETH_GATEWAY:
2089 rc = snprintf(buf, ip_len, fmt, gw);
2090 break;
2091 case ISCSI_BOOT_ETH_FLAGS:
2092 rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT);
2093 break;
2094 case ISCSI_BOOT_ETH_INDEX:
2095 rc = snprintf(buf, 3, "0\n");
2096 break;
2097 case ISCSI_BOOT_ETH_MAC:
2098 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
2099 break;
2100 case ISCSI_BOOT_ETH_VLAN:
2101 rc = snprintf(buf, 12, "%d\n",
2102 GET_FIELD2(initiator->generic_cont0,
2103 NVM_ISCSI_CFG_INITIATOR_VLAN));
2104 break;
2105 case ISCSI_BOOT_ETH_ORIGIN:
2106 if (dhcp_en)
2107 rc = snprintf(buf, 3, "3\n");
2108 break;
2109 default:
2110 rc = 0;
2111 break;
2112 }
2113
2114 return rc;
2115 }
2116
2117 static umode_t qedi_eth_get_attr_visibility(void *data, int type)
2118 {
2119 int rc = 1;
2120
2121 switch (type) {
2122 case ISCSI_BOOT_ETH_FLAGS:
2123 case ISCSI_BOOT_ETH_MAC:
2124 case ISCSI_BOOT_ETH_INDEX:
2125 case ISCSI_BOOT_ETH_IP_ADDR:
2126 case ISCSI_BOOT_ETH_SUBNET_MASK:
2127 case ISCSI_BOOT_ETH_GATEWAY:
2128 case ISCSI_BOOT_ETH_ORIGIN:
2129 case ISCSI_BOOT_ETH_VLAN:
2130 rc = 0444;
2131 break;
2132 default:
2133 rc = 0;
2134 break;
2135 }
2136 return rc;
2137 }
2138
2139 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
2140 {
2141 struct qedi_ctx *qedi = data;
2142 struct nvm_iscsi_initiator *initiator;
2143 int rc;
2144 struct nvm_iscsi_block *block;
2145
2146 block = qedi_get_nvram_block(qedi);
2147 if (!block)
2148 return 0;
2149
2150 initiator = &block->initiator;
2151
2152 switch (type) {
2153 case ISCSI_BOOT_INI_INITIATOR_NAME:
2154 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2155 initiator->initiator_name.byte);
2156 break;
2157 default:
2158 rc = 0;
2159 break;
2160 }
2161 return rc;
2162 }
2163
2164 static umode_t qedi_ini_get_attr_visibility(void *data, int type)
2165 {
2166 int rc;
2167
2168 switch (type) {
2169 case ISCSI_BOOT_INI_INITIATOR_NAME:
2170 rc = 0444;
2171 break;
2172 default:
2173 rc = 0;
2174 break;
2175 }
2176 return rc;
2177 }
2178
2179 static ssize_t
2180 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
2181 char *buf, enum qedi_nvm_tgts idx)
2182 {
2183 int rc = 1;
2184 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
2185 struct nvm_iscsi_block *block;
2186 char *chap_name, *chap_secret;
2187 char *mchap_name, *mchap_secret;
2188
2189 block = qedi_get_nvram_block(qedi);
2190 if (!block)
2191 goto exit_show_tgt_info;
2192
2193 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2194 "Port:%d, tgt_idx:%d\n",
2195 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
2196
2197 ctrl_flags = block->target[idx].ctrl_flags &
2198 NVM_ISCSI_CFG_TARGET_ENABLED;
2199
2200 if (!ctrl_flags) {
2201 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2202 "Target disabled\n");
2203 goto exit_show_tgt_info;
2204 }
2205
2206 ipv6_en = block->generic.ctrl_flags &
2207 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2208 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2209 chap_en = block->generic.ctrl_flags &
2210 NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
2211 chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
2212 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
2213
2214 mchap_en = block->generic.ctrl_flags &
2215 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
2216 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
2217 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
2218
2219 switch (type) {
2220 case ISCSI_BOOT_TGT_NAME:
2221 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2222 block->target[idx].target_name.byte);
2223 break;
2224 case ISCSI_BOOT_TGT_IP_ADDR:
2225 if (ipv6_en)
2226 rc = snprintf(buf, ip_len, "%pI6\n",
2227 block->target[idx].ipv6_addr.byte);
2228 else
2229 rc = snprintf(buf, ip_len, "%pI4\n",
2230 block->target[idx].ipv4_addr.byte);
2231 break;
2232 case ISCSI_BOOT_TGT_PORT:
2233 rc = snprintf(buf, 12, "%d\n",
2234 GET_FIELD2(block->target[idx].generic_cont0,
2235 NVM_ISCSI_CFG_TARGET_TCP_PORT));
2236 break;
2237 case ISCSI_BOOT_TGT_LUN:
2238 rc = snprintf(buf, 22, "%.*d\n",
2239 block->target[idx].lun.value[1],
2240 block->target[idx].lun.value[0]);
2241 break;
2242 case ISCSI_BOOT_TGT_CHAP_NAME:
2243 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2244 chap_name);
2245 break;
2246 case ISCSI_BOOT_TGT_CHAP_SECRET:
2247 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2248 chap_secret);
2249 break;
2250 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2251 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2252 mchap_name);
2253 break;
2254 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2255 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2256 mchap_secret);
2257 break;
2258 case ISCSI_BOOT_TGT_FLAGS:
2259 rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT);
2260 break;
2261 case ISCSI_BOOT_TGT_NIC_ASSOC:
2262 rc = snprintf(buf, 3, "0\n");
2263 break;
2264 default:
2265 rc = 0;
2266 break;
2267 }
2268
2269 exit_show_tgt_info:
2270 return rc;
2271 }
2272
2273 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
2274 {
2275 struct qedi_ctx *qedi = data;
2276
2277 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
2278 }
2279
2280 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
2281 {
2282 struct qedi_ctx *qedi = data;
2283
2284 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
2285 }
2286
2287 static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
2288 {
2289 int rc;
2290
2291 switch (type) {
2292 case ISCSI_BOOT_TGT_NAME:
2293 case ISCSI_BOOT_TGT_IP_ADDR:
2294 case ISCSI_BOOT_TGT_PORT:
2295 case ISCSI_BOOT_TGT_LUN:
2296 case ISCSI_BOOT_TGT_CHAP_NAME:
2297 case ISCSI_BOOT_TGT_CHAP_SECRET:
2298 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2299 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2300 case ISCSI_BOOT_TGT_NIC_ASSOC:
2301 case ISCSI_BOOT_TGT_FLAGS:
2302 rc = 0444;
2303 break;
2304 default:
2305 rc = 0;
2306 break;
2307 }
2308 return rc;
2309 }
2310
2311 static void qedi_boot_release(void *data)
2312 {
2313 struct qedi_ctx *qedi = data;
2314
2315 scsi_host_put(qedi->shost);
2316 }
2317
2318 static int qedi_get_boot_info(struct qedi_ctx *qedi)
2319 {
2320 int ret = 1;
2321
2322 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2323 "Get NVM iSCSI CFG image\n");
2324 ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2325 QED_NVM_IMAGE_ISCSI_CFG,
2326 (char *)qedi->iscsi_image,
2327 sizeof(struct qedi_nvm_iscsi_image));
2328 if (ret)
2329 QEDI_ERR(&qedi->dbg_ctx,
2330 "Could not get NVM image. ret = %d\n", ret);
2331
2332 return ret;
2333 }
2334
2335 static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2336 {
2337 struct iscsi_boot_kobj *boot_kobj;
2338
2339 if (qedi_get_boot_info(qedi))
2340 return -EPERM;
2341
2342 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2343 if (!qedi->boot_kset)
2344 goto kset_free;
2345
2346 if (!scsi_host_get(qedi->shost))
2347 goto kset_free;
2348
2349 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2350 qedi_show_boot_tgt_pri_info,
2351 qedi_tgt_get_attr_visibility,
2352 qedi_boot_release);
2353 if (!boot_kobj)
2354 goto put_host;
2355
2356 if (!scsi_host_get(qedi->shost))
2357 goto kset_free;
2358
2359 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2360 qedi_show_boot_tgt_sec_info,
2361 qedi_tgt_get_attr_visibility,
2362 qedi_boot_release);
2363 if (!boot_kobj)
2364 goto put_host;
2365
2366 if (!scsi_host_get(qedi->shost))
2367 goto kset_free;
2368
2369 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2370 qedi_show_boot_ini_info,
2371 qedi_ini_get_attr_visibility,
2372 qedi_boot_release);
2373 if (!boot_kobj)
2374 goto put_host;
2375
2376 if (!scsi_host_get(qedi->shost))
2377 goto kset_free;
2378
2379 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2380 qedi_show_boot_eth_info,
2381 qedi_eth_get_attr_visibility,
2382 qedi_boot_release);
2383 if (!boot_kobj)
2384 goto put_host;
2385
2386 return 0;
2387
2388 put_host:
2389 scsi_host_put(qedi->shost);
2390 kset_free:
2391 iscsi_boot_destroy_kset(qedi->boot_kset);
2392 return -ENOMEM;
2393 }
2394
2395 static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev,
2396 pci_channel_state_t state)
2397 {
2398 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2399
2400 QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n",
2401 __func__, state);
2402
2403 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
2404 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2405 "Recovery already in progress.\n");
2406 return PCI_ERS_RESULT_NONE;
2407 }
2408
2409 qedi_ops->common->recovery_process(qedi->cdev);
2410
2411 return PCI_ERS_RESULT_CAN_RECOVER;
2412 }
2413
2414 static void __qedi_remove(struct pci_dev *pdev, int mode)
2415 {
2416 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2417 int rval;
2418 u16 retry = 10;
2419
2420 if (mode == QEDI_MODE_NORMAL)
2421 iscsi_host_remove(qedi->shost, false);
2422 else if (mode == QEDI_MODE_SHUTDOWN)
2423 iscsi_host_remove(qedi->shost, true);
2424
2425 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2426 if (qedi->tmf_thread) {
2427 destroy_workqueue(qedi->tmf_thread);
2428 qedi->tmf_thread = NULL;
2429 }
2430
2431 if (qedi->offload_thread) {
2432 destroy_workqueue(qedi->offload_thread);
2433 qedi->offload_thread = NULL;
2434 }
2435 }
2436
2437 #ifdef CONFIG_DEBUG_FS
2438 qedi_dbg_host_exit(&qedi->dbg_ctx);
2439 #endif
2440 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2441 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2442
2443 qedi_sync_free_irqs(qedi);
2444
2445 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2446 while (retry--) {
2447 rval = qedi_ops->stop(qedi->cdev);
2448 if (rval < 0)
2449 msleep(1000);
2450 else
2451 break;
2452 }
2453 qedi_ops->ll2->stop(qedi->cdev);
2454 }
2455
2456 cancel_delayed_work_sync(&qedi->recovery_work);
2457 cancel_delayed_work_sync(&qedi->board_disable_work);
2458
2459 qedi_free_iscsi_pf_param(qedi);
2460
2461 rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
2462 if (rval)
2463 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
2464
2465 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2466 qedi_ops->common->slowpath_stop(qedi->cdev);
2467 qedi_ops->common->remove(qedi->cdev);
2468 }
2469
2470 qedi_destroy_fp(qedi);
2471
2472 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2473 qedi_release_cid_que(qedi);
2474 qedi_cm_free_mem(qedi);
2475 qedi_free_uio(qedi->udev);
2476 qedi_free_itt(qedi);
2477
2478 if (qedi->ll2_recv_thread) {
2479 kthread_stop(qedi->ll2_recv_thread);
2480 qedi->ll2_recv_thread = NULL;
2481 }
2482 qedi_ll2_free_skbs(qedi);
2483
2484 if (qedi->boot_kset)
2485 iscsi_boot_destroy_kset(qedi->boot_kset);
2486
2487 iscsi_host_free(qedi->shost);
2488 }
2489 }
2490
2491 static void qedi_board_disable_work(struct work_struct *work)
2492 {
2493 struct qedi_ctx *qedi =
2494 container_of(work, struct qedi_ctx,
2495 board_disable_work.work);
2496
2497 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2498 "Fan failure, Unloading firmware context.\n");
2499
2500 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2501 return;
2502
2503 __qedi_remove(qedi->pdev, QEDI_MODE_NORMAL);
2504 }
2505
2506 static void qedi_shutdown(struct pci_dev *pdev)
2507 {
2508 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2509
2510 QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__);
2511 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2512 return;
2513 __qedi_remove(pdev, QEDI_MODE_SHUTDOWN);
2514 }
2515
2516 static int qedi_suspend(struct pci_dev *pdev, pm_message_t state)
2517 {
2518 struct qedi_ctx *qedi;
2519
2520 if (!pdev) {
2521 QEDI_ERR(NULL, "pdev is NULL.\n");
2522 return -ENODEV;
2523 }
2524
2525 qedi = pci_get_drvdata(pdev);
2526
2527 QEDI_ERR(&qedi->dbg_ctx, "%s: Device does not support suspend operation\n", __func__);
2528
2529 return -EPERM;
2530 }
2531
2532 static int __qedi_probe(struct pci_dev *pdev, int mode)
2533 {
2534 struct qedi_ctx *qedi;
2535 struct qed_ll2_params params;
2536 u8 dp_level = 0;
2537 bool is_vf = false;
2538 char host_buf[16];
2539 struct qed_link_params link_params;
2540 struct qed_slowpath_params sp_params;
2541 struct qed_probe_params qed_params;
2542 void *task_start, *task_end;
2543 int rc;
2544 u16 retry = 10;
2545
2546 if (mode != QEDI_MODE_RECOVERY) {
2547 qedi = qedi_host_alloc(pdev);
2548 if (!qedi) {
2549 rc = -ENOMEM;
2550 goto exit_probe;
2551 }
2552 } else {
2553 qedi = pci_get_drvdata(pdev);
2554 }
2555
2556 retry_probe:
2557 if (mode == QEDI_MODE_RECOVERY)
2558 msleep(2000);
2559
2560 memset(&qed_params, 0, sizeof(qed_params));
2561 qed_params.protocol = QED_PROTOCOL_ISCSI;
2562 qed_params.dp_module = qedi_qed_debug;
2563 qed_params.dp_level = dp_level;
2564 qed_params.is_vf = is_vf;
2565 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2566 if (!qedi->cdev) {
2567 if (mode == QEDI_MODE_RECOVERY && retry) {
2568 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2569 "Retry %d initialize hardware\n", retry);
2570 retry--;
2571 goto retry_probe;
2572 }
2573
2574 rc = -ENODEV;
2575 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2576 goto free_host;
2577 }
2578
2579 set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags);
2580 set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags);
2581 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2582
2583 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2584 if (rc)
2585 goto free_host;
2586
2587 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2588 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
2589 qedi->dev_info.common.num_hwfns,
2590 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
2591
2592 rc = qedi_set_iscsi_pf_param(qedi);
2593 if (rc) {
2594 rc = -ENOMEM;
2595 QEDI_ERR(&qedi->dbg_ctx,
2596 "Set iSCSI pf param fail\n");
2597 goto free_host;
2598 }
2599
2600 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2601
2602 rc = qedi_prepare_fp(qedi);
2603 if (rc) {
2604 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2605 goto free_pf_params;
2606 }
2607
2608 /* Start the Slowpath-process */
2609 memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2610 sp_params.int_mode = QED_INT_MODE_MSIX;
2611 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2612 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2613 sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2614 sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2615 strscpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2616 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2617 if (rc) {
2618 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2619 goto stop_hw;
2620 }
2621
2622 /* update_pf_params needs to be called before and after slowpath
2623 * start
2624 */
2625 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2626
2627 rc = qedi_setup_int(qedi);
2628 if (rc)
2629 goto stop_iscsi_func;
2630
2631 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2632
2633 /* Learn information crucial for qedi to progress */
2634 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2635 if (rc)
2636 goto stop_iscsi_func;
2637
2638 /* Record BDQ producer doorbell addresses */
2639 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2640 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2641 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2642 "BDQ primary_prod=%p secondary_prod=%p.\n",
2643 qedi->bdq_primary_prod,
2644 qedi->bdq_secondary_prod);
2645
2646 /*
2647 * We need to write the number of BDs in the BDQ we've preallocated so
2648 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
2649 * packet arrives.
2650 */
2651 qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2652 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2653 "Writing %d to primary and secondary BDQ doorbell registers.\n",
2654 qedi->bdq_prod_idx);
2655 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2656 readw(qedi->bdq_primary_prod);
2657 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2658 readw(qedi->bdq_secondary_prod);
2659
2660 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2661 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2662 qedi->mac);
2663
2664 snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no);
2665 qedi_ops->common->set_name(qedi->cdev, host_buf);
2666
2667 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2668
2669 memset(&params, 0, sizeof(params));
2670 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2671 qedi->ll2_mtu = DEF_PATH_MTU;
2672 params.drop_ttl0_packets = 0;
2673 params.rx_vlan_stripping = 1;
2674 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2675
2676 if (mode != QEDI_MODE_RECOVERY) {
2677 /* set up rx path */
2678 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2679 spin_lock_init(&qedi->ll2_lock);
2680 /* start qedi context */
2681 spin_lock_init(&qedi->hba_lock);
2682 spin_lock_init(&qedi->task_idx_lock);
2683 mutex_init(&qedi->stats_lock);
2684 }
2685 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2686 qedi_ops->ll2->start(qedi->cdev, &params);
2687
2688 if (mode != QEDI_MODE_RECOVERY) {
2689 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2690 (void *)qedi,
2691 "qedi_ll2_thread");
2692 }
2693
2694 rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2695 qedi, qedi_iscsi_event_cb);
2696 if (rc) {
2697 rc = -ENODEV;
2698 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2699 goto stop_slowpath;
2700 }
2701
2702 task_start = qedi_get_task_mem(&qedi->tasks, 0);
2703 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2704 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2705 "Task context start=%p, end=%p block_size=%u.\n",
2706 task_start, task_end, qedi->tasks.size);
2707
2708 memset(&link_params, 0, sizeof(link_params));
2709 link_params.link_up = true;
2710 rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2711 if (rc) {
2712 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2713 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2714 }
2715
2716 #ifdef CONFIG_DEBUG_FS
2717 qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops,
2718 qedi_dbg_fops);
2719 #endif
2720 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2721 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2722 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2723 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2724
2725 if (mode == QEDI_MODE_NORMAL) {
2726 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2727 QEDI_ERR(&qedi->dbg_ctx,
2728 "Could not add iscsi host\n");
2729 rc = -ENOMEM;
2730 goto remove_host;
2731 }
2732
2733 /* Allocate uio buffers */
2734 rc = qedi_alloc_uio_rings(qedi);
2735 if (rc) {
2736 QEDI_ERR(&qedi->dbg_ctx,
2737 "UIO alloc ring failed err=%d\n", rc);
2738 goto remove_host;
2739 }
2740
2741 rc = qedi_init_uio(qedi);
2742 if (rc) {
2743 QEDI_ERR(&qedi->dbg_ctx,
2744 "UIO init failed, err=%d\n", rc);
2745 goto free_uio;
2746 }
2747
2748 /* host the array on iscsi_conn */
2749 rc = qedi_setup_cid_que(qedi);
2750 if (rc) {
2751 QEDI_ERR(&qedi->dbg_ctx,
2752 "Could not setup cid que\n");
2753 goto free_uio;
2754 }
2755
2756 rc = qedi_cm_alloc_mem(qedi);
2757 if (rc) {
2758 QEDI_ERR(&qedi->dbg_ctx,
2759 "Could not alloc cm memory\n");
2760 goto free_cid_que;
2761 }
2762
2763 rc = qedi_alloc_itt(qedi);
2764 if (rc) {
2765 QEDI_ERR(&qedi->dbg_ctx,
2766 "Could not alloc itt memory\n");
2767 goto free_cid_que;
2768 }
2769
2770 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2771 qedi->tmf_thread =
2772 alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, host_buf);
2773 if (!qedi->tmf_thread) {
2774 QEDI_ERR(&qedi->dbg_ctx,
2775 "Unable to start tmf thread!\n");
2776 rc = -ENODEV;
2777 goto free_cid_que;
2778 }
2779
2780 qedi->offload_thread = alloc_workqueue("qedi_ofld%d",
2781 WQ_MEM_RECLAIM,
2782 1, qedi->shost->host_no);
2783 if (!qedi->offload_thread) {
2784 QEDI_ERR(&qedi->dbg_ctx,
2785 "Unable to start offload thread!\n");
2786 rc = -ENODEV;
2787 goto free_tmf_thread;
2788 }
2789
2790 INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler);
2791 INIT_DELAYED_WORK(&qedi->board_disable_work,
2792 qedi_board_disable_work);
2793
2794 /* F/w needs 1st task context memory entry for performance */
2795 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2796 atomic_set(&qedi->num_offloads, 0);
2797
2798 if (qedi_setup_boot_info(qedi))
2799 QEDI_ERR(&qedi->dbg_ctx,
2800 "No iSCSI boot target configured\n");
2801
2802 rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
2803 if (rc)
2804 QEDI_ERR(&qedi->dbg_ctx,
2805 "Failed to send drv state to MFW\n");
2806
2807 }
2808
2809 return 0;
2810
2811 free_tmf_thread:
2812 destroy_workqueue(qedi->tmf_thread);
2813 free_cid_que:
2814 qedi_release_cid_que(qedi);
2815 free_uio:
2816 qedi_free_uio(qedi->udev);
2817 remove_host:
2818 #ifdef CONFIG_DEBUG_FS
2819 qedi_dbg_host_exit(&qedi->dbg_ctx);
2820 #endif
2821 iscsi_host_remove(qedi->shost, false);
2822 stop_iscsi_func:
2823 qedi_ops->stop(qedi->cdev);
2824 stop_slowpath:
2825 qedi_ops->common->slowpath_stop(qedi->cdev);
2826 stop_hw:
2827 qedi_ops->common->remove(qedi->cdev);
2828 free_pf_params:
2829 qedi_free_iscsi_pf_param(qedi);
2830 free_host:
2831 iscsi_host_free(qedi->shost);
2832 exit_probe:
2833 return rc;
2834 }
2835
2836 static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session)
2837 {
2838 struct iscsi_session *session = cls_session->dd_data;
2839 struct iscsi_conn *conn = session->leadconn;
2840 struct qedi_conn *qedi_conn = conn->dd_data;
2841
2842 iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED);
2843 }
2844
2845 static void qedi_recovery_handler(struct work_struct *work)
2846 {
2847 struct qedi_ctx *qedi =
2848 container_of(work, struct qedi_ctx, recovery_work.work);
2849
2850 iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery);
2851
2852 /* Call common_ops->recovery_prolog to allow the MFW to quiesce
2853 * any PCI transactions.
2854 */
2855 qedi_ops->common->recovery_prolog(qedi->cdev);
2856
2857 __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY);
2858 __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY);
2859 clear_bit(QEDI_IN_RECOVERY, &qedi->flags);
2860 }
2861
2862 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2863 {
2864 return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2865 }
2866
2867 static void qedi_remove(struct pci_dev *pdev)
2868 {
2869 __qedi_remove(pdev, QEDI_MODE_NORMAL);
2870 }
2871
2872 static struct pci_device_id qedi_pci_tbl[] = {
2873 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2874 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2875 { 0 },
2876 };
2877 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2878
2879 static enum cpuhp_state qedi_cpuhp_state;
2880
2881 static struct pci_error_handlers qedi_err_handler = {
2882 .error_detected = qedi_io_error_detected,
2883 };
2884
2885 static struct pci_driver qedi_pci_driver = {
2886 .name = QEDI_MODULE_NAME,
2887 .id_table = qedi_pci_tbl,
2888 .probe = qedi_probe,
2889 .remove = qedi_remove,
2890 .shutdown = qedi_shutdown,
2891 .err_handler = &qedi_err_handler,
2892 .suspend = qedi_suspend,
2893 };
2894
2895 static int __init qedi_init(void)
2896 {
2897 struct qedi_percpu_s *p;
2898 int cpu, rc = 0;
2899
2900 qedi_ops = qed_get_iscsi_ops();
2901 if (!qedi_ops) {
2902 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2903 return -EINVAL;
2904 }
2905
2906 #ifdef CONFIG_DEBUG_FS
2907 qedi_dbg_init("qedi");
2908 #endif
2909
2910 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2911 if (!qedi_scsi_transport) {
2912 QEDI_ERR(NULL, "Could not register qedi transport");
2913 rc = -ENOMEM;
2914 goto exit_qedi_init_1;
2915 }
2916
2917 for_each_possible_cpu(cpu) {
2918 p = &per_cpu(qedi_percpu, cpu);
2919 INIT_LIST_HEAD(&p->work_list);
2920 spin_lock_init(&p->p_work_lock);
2921 p->iothread = NULL;
2922 }
2923
2924 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2925 qedi_cpu_online, qedi_cpu_offline);
2926 if (rc < 0)
2927 goto exit_qedi_init_2;
2928 qedi_cpuhp_state = rc;
2929
2930 rc = pci_register_driver(&qedi_pci_driver);
2931 if (rc) {
2932 QEDI_ERR(NULL, "Failed to register driver\n");
2933 goto exit_qedi_hp;
2934 }
2935
2936 return 0;
2937
2938 exit_qedi_hp:
2939 cpuhp_remove_state(qedi_cpuhp_state);
2940 exit_qedi_init_2:
2941 iscsi_unregister_transport(&qedi_iscsi_transport);
2942 exit_qedi_init_1:
2943 #ifdef CONFIG_DEBUG_FS
2944 qedi_dbg_exit();
2945 #endif
2946 qed_put_iscsi_ops();
2947 return rc;
2948 }
2949
2950 static void __exit qedi_cleanup(void)
2951 {
2952 pci_unregister_driver(&qedi_pci_driver);
2953 cpuhp_remove_state(qedi_cpuhp_state);
2954 iscsi_unregister_transport(&qedi_iscsi_transport);
2955
2956 #ifdef CONFIG_DEBUG_FS
2957 qedi_dbg_exit();
2958 #endif
2959 qed_put_iscsi_ops();
2960 }
2961
2962 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2963 MODULE_LICENSE("GPL");
2964 MODULE_AUTHOR("QLogic Corporation");
2965 MODULE_VERSION(QEDI_MODULE_VERSION);
2966 module_init(qedi_init);
2967 module_exit(qedi_cleanup);
Linux Kernel