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Merge branch 'fixes' into misc
[people/arne_f/kernel.git] / drivers / scsi / qedi / qedi_main.c
1 /*
2 * QLogic iSCSI Offload Driver
3 * Copyright (c) 2016 Cavium Inc.
4 *
5 * This software is available under the terms of the GNU General Public License
6 * (GPL) Version 2, available from the file COPYING in the main directory of
7 * this source tree.
8 */
9
10 #include <linux/module.h>
11 #include <linux/pci.h>
12 #include <linux/kernel.h>
13 #include <linux/if_arp.h>
14 #include <scsi/iscsi_if.h>
15 #include <linux/inet.h>
16 #include <net/arp.h>
17 #include <linux/list.h>
18 #include <linux/kthread.h>
19 #include <linux/mm.h>
20 #include <linux/if_vlan.h>
21 #include <linux/cpu.h>
22 #include <linux/iscsi_boot_sysfs.h>
23
24 #include <scsi/scsi_cmnd.h>
25 #include <scsi/scsi_device.h>
26 #include <scsi/scsi_eh.h>
27 #include <scsi/scsi_host.h>
28 #include <scsi/scsi.h>
29
30 #include "qedi.h"
31 #include "qedi_gbl.h"
32 #include "qedi_iscsi.h"
33
34 static uint qedi_fw_debug;
35 module_param(qedi_fw_debug, uint, 0644);
36 MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
37
38 uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
39 module_param(qedi_dbg_log, uint, 0644);
40 MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
41
42 uint qedi_io_tracing;
43 module_param(qedi_io_tracing, uint, 0644);
44 MODULE_PARM_DESC(qedi_io_tracing,
45 " Enable logging of SCSI requests/completions into trace buffer. (default off).");
46
47 const struct qed_iscsi_ops *qedi_ops;
48 static struct scsi_transport_template *qedi_scsi_transport;
49 static struct pci_driver qedi_pci_driver;
50 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
51 static LIST_HEAD(qedi_udev_list);
52 /* Static function declaration */
53 static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
54 static void qedi_free_global_queues(struct qedi_ctx *qedi);
55 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
56 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
57 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
58
59 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
60 {
61 struct qedi_ctx *qedi;
62 struct qedi_endpoint *qedi_ep;
63 struct async_data *data;
64 int rval = 0;
65
66 if (!context || !fw_handle) {
67 QEDI_ERR(NULL, "Recv event with ctx NULL\n");
68 return -EINVAL;
69 }
70
71 qedi = (struct qedi_ctx *)context;
72 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
73 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
74
75 data = (struct async_data *)fw_handle;
76 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
77 "cid=0x%x tid=0x%x err-code=0x%x fw-dbg-param=0x%x\n",
78 data->cid, data->itid, data->error_code,
79 data->fw_debug_param);
80
81 qedi_ep = qedi->ep_tbl[data->cid];
82
83 if (!qedi_ep) {
84 QEDI_WARN(&qedi->dbg_ctx,
85 "Cannot process event, ep already disconnected, cid=0x%x\n",
86 data->cid);
87 WARN_ON(1);
88 return -ENODEV;
89 }
90
91 switch (fw_event_code) {
92 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
93 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
94 qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
95
96 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
97 break;
98 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
99 qedi_ep->state = EP_STATE_DISCONN_COMPL;
100 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
101 break;
102 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
103 qedi_process_iscsi_error(qedi_ep, data);
104 break;
105 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
106 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
107 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
108 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
109 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
110 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
111 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
112 qedi_process_tcp_error(qedi_ep, data);
113 break;
114 default:
115 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
116 fw_event_code);
117 }
118
119 return rval;
120 }
121
122 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
123 {
124 struct qedi_uio_dev *udev = uinfo->priv;
125 struct qedi_ctx *qedi = udev->qedi;
126
127 if (!capable(CAP_NET_ADMIN))
128 return -EPERM;
129
130 if (udev->uio_dev != -1)
131 return -EBUSY;
132
133 rtnl_lock();
134 udev->uio_dev = iminor(inode);
135 qedi_reset_uio_rings(udev);
136 set_bit(UIO_DEV_OPENED, &qedi->flags);
137 rtnl_unlock();
138
139 return 0;
140 }
141
142 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
143 {
144 struct qedi_uio_dev *udev = uinfo->priv;
145 struct qedi_ctx *qedi = udev->qedi;
146
147 udev->uio_dev = -1;
148 clear_bit(UIO_DEV_OPENED, &qedi->flags);
149 qedi_ll2_free_skbs(qedi);
150 return 0;
151 }
152
153 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
154 {
155 if (udev->uctrl) {
156 free_page((unsigned long)udev->uctrl);
157 udev->uctrl = NULL;
158 }
159
160 if (udev->ll2_ring) {
161 free_page((unsigned long)udev->ll2_ring);
162 udev->ll2_ring = NULL;
163 }
164
165 if (udev->ll2_buf) {
166 free_pages((unsigned long)udev->ll2_buf, 2);
167 udev->ll2_buf = NULL;
168 }
169 }
170
171 static void __qedi_free_uio(struct qedi_uio_dev *udev)
172 {
173 uio_unregister_device(&udev->qedi_uinfo);
174
175 __qedi_free_uio_rings(udev);
176
177 pci_dev_put(udev->pdev);
178 kfree(udev);
179 }
180
181 static void qedi_free_uio(struct qedi_uio_dev *udev)
182 {
183 if (!udev)
184 return;
185
186 list_del_init(&udev->list);
187 __qedi_free_uio(udev);
188 }
189
190 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
191 {
192 struct qedi_ctx *qedi = NULL;
193 struct qedi_uio_ctrl *uctrl = NULL;
194
195 qedi = udev->qedi;
196 uctrl = udev->uctrl;
197
198 spin_lock_bh(&qedi->ll2_lock);
199 uctrl->host_rx_cons = 0;
200 uctrl->hw_rx_prod = 0;
201 uctrl->hw_rx_bd_prod = 0;
202 uctrl->host_rx_bd_cons = 0;
203
204 memset(udev->ll2_ring, 0, udev->ll2_ring_size);
205 memset(udev->ll2_buf, 0, udev->ll2_buf_size);
206 spin_unlock_bh(&qedi->ll2_lock);
207 }
208
209 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
210 {
211 int rc = 0;
212
213 if (udev->ll2_ring || udev->ll2_buf)
214 return rc;
215
216 /* Memory for control area. */
217 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
218 if (!udev->uctrl)
219 return -ENOMEM;
220
221 /* Allocating memory for LL2 ring */
222 udev->ll2_ring_size = QEDI_PAGE_SIZE;
223 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
224 if (!udev->ll2_ring) {
225 rc = -ENOMEM;
226 goto exit_alloc_ring;
227 }
228
229 /* Allocating memory for Tx/Rx pkt buffer */
230 udev->ll2_buf_size = TX_RX_RING * LL2_SINGLE_BUF_SIZE;
231 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
232 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
233 __GFP_ZERO, 2);
234 if (!udev->ll2_buf) {
235 rc = -ENOMEM;
236 goto exit_alloc_buf;
237 }
238 return rc;
239
240 exit_alloc_buf:
241 free_page((unsigned long)udev->ll2_ring);
242 udev->ll2_ring = NULL;
243 exit_alloc_ring:
244 return rc;
245 }
246
247 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
248 {
249 struct qedi_uio_dev *udev = NULL;
250 int rc = 0;
251
252 list_for_each_entry(udev, &qedi_udev_list, list) {
253 if (udev->pdev == qedi->pdev) {
254 udev->qedi = qedi;
255 if (__qedi_alloc_uio_rings(udev)) {
256 udev->qedi = NULL;
257 return -ENOMEM;
258 }
259 qedi->udev = udev;
260 return 0;
261 }
262 }
263
264 udev = kzalloc(sizeof(*udev), GFP_KERNEL);
265 if (!udev) {
266 rc = -ENOMEM;
267 goto err_udev;
268 }
269
270 udev->uio_dev = -1;
271
272 udev->qedi = qedi;
273 udev->pdev = qedi->pdev;
274
275 rc = __qedi_alloc_uio_rings(udev);
276 if (rc)
277 goto err_uctrl;
278
279 list_add(&udev->list, &qedi_udev_list);
280
281 pci_dev_get(udev->pdev);
282 qedi->udev = udev;
283
284 udev->tx_pkt = udev->ll2_buf;
285 udev->rx_pkt = udev->ll2_buf + LL2_SINGLE_BUF_SIZE;
286 return 0;
287
288 err_uctrl:
289 kfree(udev);
290 err_udev:
291 return -ENOMEM;
292 }
293
294 static int qedi_init_uio(struct qedi_ctx *qedi)
295 {
296 struct qedi_uio_dev *udev = qedi->udev;
297 struct uio_info *uinfo;
298 int ret = 0;
299
300 if (!udev)
301 return -ENOMEM;
302
303 uinfo = &udev->qedi_uinfo;
304
305 uinfo->mem[0].addr = (unsigned long)udev->uctrl;
306 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
307 uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
308
309 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
310 uinfo->mem[1].size = udev->ll2_ring_size;
311 uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
312
313 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
314 uinfo->mem[2].size = udev->ll2_buf_size;
315 uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
316
317 uinfo->name = "qedi_uio";
318 uinfo->version = QEDI_MODULE_VERSION;
319 uinfo->irq = UIO_IRQ_CUSTOM;
320
321 uinfo->open = qedi_uio_open;
322 uinfo->release = qedi_uio_close;
323
324 if (udev->uio_dev == -1) {
325 if (!uinfo->priv) {
326 uinfo->priv = udev;
327
328 ret = uio_register_device(&udev->pdev->dev, uinfo);
329 if (ret) {
330 QEDI_ERR(&qedi->dbg_ctx,
331 "UIO registration failed\n");
332 }
333 }
334 }
335
336 return ret;
337 }
338
339 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
340 struct qed_sb_info *sb_info, u16 sb_id)
341 {
342 struct status_block *sb_virt;
343 dma_addr_t sb_phys;
344 int ret;
345
346 sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
347 sizeof(struct status_block), &sb_phys,
348 GFP_KERNEL);
349 if (!sb_virt) {
350 QEDI_ERR(&qedi->dbg_ctx,
351 "Status block allocation failed for id = %d.\n",
352 sb_id);
353 return -ENOMEM;
354 }
355
356 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
357 sb_id, QED_SB_TYPE_STORAGE);
358 if (ret) {
359 QEDI_ERR(&qedi->dbg_ctx,
360 "Status block initialization failed for id = %d.\n",
361 sb_id);
362 return ret;
363 }
364
365 return 0;
366 }
367
368 static void qedi_free_sb(struct qedi_ctx *qedi)
369 {
370 struct qed_sb_info *sb_info;
371 int id;
372
373 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
374 sb_info = &qedi->sb_array[id];
375 if (sb_info->sb_virt)
376 dma_free_coherent(&qedi->pdev->dev,
377 sizeof(*sb_info->sb_virt),
378 (void *)sb_info->sb_virt,
379 sb_info->sb_phys);
380 }
381 }
382
383 static void qedi_free_fp(struct qedi_ctx *qedi)
384 {
385 kfree(qedi->fp_array);
386 kfree(qedi->sb_array);
387 }
388
389 static void qedi_destroy_fp(struct qedi_ctx *qedi)
390 {
391 qedi_free_sb(qedi);
392 qedi_free_fp(qedi);
393 }
394
395 static int qedi_alloc_fp(struct qedi_ctx *qedi)
396 {
397 int ret = 0;
398
399 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
400 sizeof(struct qedi_fastpath), GFP_KERNEL);
401 if (!qedi->fp_array) {
402 QEDI_ERR(&qedi->dbg_ctx,
403 "fastpath fp array allocation failed.\n");
404 return -ENOMEM;
405 }
406
407 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
408 sizeof(struct qed_sb_info), GFP_KERNEL);
409 if (!qedi->sb_array) {
410 QEDI_ERR(&qedi->dbg_ctx,
411 "fastpath sb array allocation failed.\n");
412 ret = -ENOMEM;
413 goto free_fp;
414 }
415
416 return ret;
417
418 free_fp:
419 qedi_free_fp(qedi);
420 return ret;
421 }
422
423 static void qedi_int_fp(struct qedi_ctx *qedi)
424 {
425 struct qedi_fastpath *fp;
426 int id;
427
428 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
429 sizeof(*qedi->fp_array));
430 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
431 sizeof(*qedi->sb_array));
432
433 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
434 fp = &qedi->fp_array[id];
435 fp->sb_info = &qedi->sb_array[id];
436 fp->sb_id = id;
437 fp->qedi = qedi;
438 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
439 "qedi", id);
440
441 /* fp_array[i] ---- irq cookie
442 * So init data which is needed in int ctx
443 */
444 }
445 }
446
447 static int qedi_prepare_fp(struct qedi_ctx *qedi)
448 {
449 struct qedi_fastpath *fp;
450 int id, ret = 0;
451
452 ret = qedi_alloc_fp(qedi);
453 if (ret)
454 goto err;
455
456 qedi_int_fp(qedi);
457
458 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
459 fp = &qedi->fp_array[id];
460 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
461 if (ret) {
462 QEDI_ERR(&qedi->dbg_ctx,
463 "SB allocation and initialization failed.\n");
464 ret = -EIO;
465 goto err_init;
466 }
467 }
468
469 return 0;
470
471 err_init:
472 qedi_free_sb(qedi);
473 qedi_free_fp(qedi);
474 err:
475 return ret;
476 }
477
478 static int qedi_setup_cid_que(struct qedi_ctx *qedi)
479 {
480 int i;
481
482 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
483 sizeof(u32), GFP_KERNEL);
484 if (!qedi->cid_que.cid_que_base)
485 return -ENOMEM;
486
487 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
488 sizeof(struct qedi_conn *),
489 GFP_KERNEL);
490 if (!qedi->cid_que.conn_cid_tbl) {
491 kfree(qedi->cid_que.cid_que_base);
492 qedi->cid_que.cid_que_base = NULL;
493 return -ENOMEM;
494 }
495
496 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
497 qedi->cid_que.cid_q_prod_idx = 0;
498 qedi->cid_que.cid_q_cons_idx = 0;
499 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
500 qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
501
502 for (i = 0; i < qedi->max_active_conns; i++) {
503 qedi->cid_que.cid_que[i] = i;
504 qedi->cid_que.conn_cid_tbl[i] = NULL;
505 }
506
507 return 0;
508 }
509
510 static void qedi_release_cid_que(struct qedi_ctx *qedi)
511 {
512 kfree(qedi->cid_que.cid_que_base);
513 qedi->cid_que.cid_que_base = NULL;
514
515 kfree(qedi->cid_que.conn_cid_tbl);
516 qedi->cid_que.conn_cid_tbl = NULL;
517 }
518
519 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
520 u16 start_id, u16 next)
521 {
522 id_tbl->start = start_id;
523 id_tbl->max = size;
524 id_tbl->next = next;
525 spin_lock_init(&id_tbl->lock);
526 id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
527 if (!id_tbl->table)
528 return -ENOMEM;
529
530 return 0;
531 }
532
533 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
534 {
535 kfree(id_tbl->table);
536 id_tbl->table = NULL;
537 }
538
539 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
540 {
541 int ret = -1;
542
543 id -= id_tbl->start;
544 if (id >= id_tbl->max)
545 return ret;
546
547 spin_lock(&id_tbl->lock);
548 if (!test_bit(id, id_tbl->table)) {
549 set_bit(id, id_tbl->table);
550 ret = 0;
551 }
552 spin_unlock(&id_tbl->lock);
553 return ret;
554 }
555
556 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
557 {
558 u16 id;
559
560 spin_lock(&id_tbl->lock);
561 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
562 if (id >= id_tbl->max) {
563 id = QEDI_LOCAL_PORT_INVALID;
564 if (id_tbl->next != 0) {
565 id = find_first_zero_bit(id_tbl->table, id_tbl->next);
566 if (id >= id_tbl->next)
567 id = QEDI_LOCAL_PORT_INVALID;
568 }
569 }
570
571 if (id < id_tbl->max) {
572 set_bit(id, id_tbl->table);
573 id_tbl->next = (id + 1) & (id_tbl->max - 1);
574 id += id_tbl->start;
575 }
576
577 spin_unlock(&id_tbl->lock);
578
579 return id;
580 }
581
582 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
583 {
584 if (id == QEDI_LOCAL_PORT_INVALID)
585 return;
586
587 id -= id_tbl->start;
588 if (id >= id_tbl->max)
589 return;
590
591 clear_bit(id, id_tbl->table);
592 }
593
594 static void qedi_cm_free_mem(struct qedi_ctx *qedi)
595 {
596 kfree(qedi->ep_tbl);
597 qedi->ep_tbl = NULL;
598 qedi_free_id_tbl(&qedi->lcl_port_tbl);
599 }
600
601 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
602 {
603 u16 port_id;
604
605 qedi->ep_tbl = kzalloc((qedi->max_active_conns *
606 sizeof(struct qedi_endpoint *)), GFP_KERNEL);
607 if (!qedi->ep_tbl)
608 return -ENOMEM;
609 port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
610 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
611 QEDI_LOCAL_PORT_MIN, port_id)) {
612 qedi_cm_free_mem(qedi);
613 return -ENOMEM;
614 }
615
616 return 0;
617 }
618
619 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
620 {
621 struct Scsi_Host *shost;
622 struct qedi_ctx *qedi = NULL;
623
624 shost = iscsi_host_alloc(&qedi_host_template,
625 sizeof(struct qedi_ctx), 0);
626 if (!shost) {
627 QEDI_ERR(NULL, "Could not allocate shost\n");
628 goto exit_setup_shost;
629 }
630
631 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA;
632 shost->max_channel = 0;
633 shost->max_lun = ~0;
634 shost->max_cmd_len = 16;
635 shost->transportt = qedi_scsi_transport;
636
637 qedi = iscsi_host_priv(shost);
638 memset(qedi, 0, sizeof(*qedi));
639 qedi->shost = shost;
640 qedi->dbg_ctx.host_no = shost->host_no;
641 qedi->pdev = pdev;
642 qedi->dbg_ctx.pdev = pdev;
643 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
644 qedi->max_sqes = QEDI_SQ_SIZE;
645
646 if (shost_use_blk_mq(shost))
647 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
648
649 pci_set_drvdata(pdev, qedi);
650
651 exit_setup_shost:
652 return qedi;
653 }
654
655 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
656 {
657 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
658 struct qedi_uio_dev *udev;
659 struct qedi_uio_ctrl *uctrl;
660 struct skb_work_list *work;
661 u32 prod;
662
663 if (!qedi) {
664 QEDI_ERR(NULL, "qedi is NULL\n");
665 return -1;
666 }
667
668 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
669 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
670 "UIO DEV is not opened\n");
671 kfree_skb(skb);
672 return 0;
673 }
674
675 udev = qedi->udev;
676 uctrl = udev->uctrl;
677
678 work = kzalloc(sizeof(*work), GFP_ATOMIC);
679 if (!work) {
680 QEDI_WARN(&qedi->dbg_ctx,
681 "Could not allocate work so dropping frame.\n");
682 kfree_skb(skb);
683 return 0;
684 }
685
686 INIT_LIST_HEAD(&work->list);
687 work->skb = skb;
688
689 if (skb_vlan_tag_present(skb))
690 work->vlan_id = skb_vlan_tag_get(skb);
691
692 if (work->vlan_id)
693 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
694
695 spin_lock_bh(&qedi->ll2_lock);
696 list_add_tail(&work->list, &qedi->ll2_skb_list);
697
698 ++uctrl->hw_rx_prod_cnt;
699 prod = (uctrl->hw_rx_prod + 1) % RX_RING;
700 if (prod != uctrl->host_rx_cons) {
701 uctrl->hw_rx_prod = prod;
702 spin_unlock_bh(&qedi->ll2_lock);
703 wake_up_process(qedi->ll2_recv_thread);
704 return 0;
705 }
706
707 spin_unlock_bh(&qedi->ll2_lock);
708 return 0;
709 }
710
711 /* map this skb to iscsiuio mmaped region */
712 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
713 u16 vlan_id)
714 {
715 struct qedi_uio_dev *udev = NULL;
716 struct qedi_uio_ctrl *uctrl = NULL;
717 struct qedi_rx_bd rxbd;
718 struct qedi_rx_bd *p_rxbd;
719 u32 rx_bd_prod;
720 void *pkt;
721 int len = 0;
722
723 if (!qedi) {
724 QEDI_ERR(NULL, "qedi is NULL\n");
725 return -1;
726 }
727
728 udev = qedi->udev;
729 uctrl = udev->uctrl;
730 pkt = udev->rx_pkt + (uctrl->hw_rx_prod * LL2_SINGLE_BUF_SIZE);
731 len = min_t(u32, skb->len, (u32)LL2_SINGLE_BUF_SIZE);
732 memcpy(pkt, skb->data, len);
733
734 memset(&rxbd, 0, sizeof(rxbd));
735 rxbd.rx_pkt_index = uctrl->hw_rx_prod;
736 rxbd.rx_pkt_len = len;
737 rxbd.vlan_id = vlan_id;
738
739 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
740 rx_bd_prod = uctrl->hw_rx_bd_prod;
741 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
742 p_rxbd += rx_bd_prod;
743
744 memcpy(p_rxbd, &rxbd, sizeof(rxbd));
745
746 /* notify the iscsiuio about new packet */
747 uio_event_notify(&udev->qedi_uinfo);
748
749 return 0;
750 }
751
752 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
753 {
754 struct skb_work_list *work, *work_tmp;
755
756 spin_lock_bh(&qedi->ll2_lock);
757 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
758 list_del(&work->list);
759 if (work->skb)
760 kfree_skb(work->skb);
761 kfree(work);
762 }
763 spin_unlock_bh(&qedi->ll2_lock);
764 }
765
766 static int qedi_ll2_recv_thread(void *arg)
767 {
768 struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
769 struct skb_work_list *work, *work_tmp;
770
771 set_user_nice(current, -20);
772
773 while (!kthread_should_stop()) {
774 spin_lock_bh(&qedi->ll2_lock);
775 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
776 list) {
777 list_del(&work->list);
778 qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
779 kfree_skb(work->skb);
780 kfree(work);
781 }
782 set_current_state(TASK_INTERRUPTIBLE);
783 spin_unlock_bh(&qedi->ll2_lock);
784 schedule();
785 }
786
787 __set_current_state(TASK_RUNNING);
788 return 0;
789 }
790
791 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
792 {
793 u8 num_sq_pages;
794 u32 log_page_size;
795 int rval = 0;
796
797
798 num_sq_pages = (MAX_OUSTANDING_TASKS_PER_CON * 8) / PAGE_SIZE;
799
800 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
801
802 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
803 "Number of CQ count is %d\n", qedi->num_queues);
804
805 memset(&qedi->pf_params.iscsi_pf_params, 0,
806 sizeof(qedi->pf_params.iscsi_pf_params));
807
808 qedi->p_cpuq = pci_alloc_consistent(qedi->pdev,
809 qedi->num_queues * sizeof(struct qedi_glbl_q_params),
810 &qedi->hw_p_cpuq);
811 if (!qedi->p_cpuq) {
812 QEDI_ERR(&qedi->dbg_ctx, "pci_alloc_consistent fail\n");
813 rval = -1;
814 goto err_alloc_mem;
815 }
816
817 rval = qedi_alloc_global_queues(qedi);
818 if (rval) {
819 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
820 rval = -1;
821 goto err_alloc_mem;
822 }
823
824 qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
825 qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
826 qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
827 qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
828 qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
829 qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
830 qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
831 qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
832 qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000;
833 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
834
835 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
836 if ((1 << log_page_size) == PAGE_SIZE)
837 break;
838 }
839 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
840
841 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
842 (u64)qedi->hw_p_cpuq;
843
844 /* RQ BDQ initializations.
845 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
846 * rqe_log_size: 8 for 256B RQE
847 */
848 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
849 /* BDQ address and size */
850 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
851 qedi->bdq_pbl_list_dma;
852 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
853 qedi->bdq_pbl_list_num_entries;
854 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
855
856 /* cq_num_entries: num_tasks + rq_num_entries */
857 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
858
859 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
860 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
861 qedi->pf_params.iscsi_pf_params.ooo_enable = 1;
862
863 err_alloc_mem:
864 return rval;
865 }
866
867 /* Free DMA coherent memory for array of queue pointers we pass to qed */
868 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
869 {
870 size_t size = 0;
871
872 if (qedi->p_cpuq) {
873 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
874 pci_free_consistent(qedi->pdev, size, qedi->p_cpuq,
875 qedi->hw_p_cpuq);
876 }
877
878 qedi_free_global_queues(qedi);
879
880 kfree(qedi->global_queues);
881 }
882
883 static void qedi_link_update(void *dev, struct qed_link_output *link)
884 {
885 struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
886
887 if (link->link_up) {
888 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
889 atomic_set(&qedi->link_state, QEDI_LINK_UP);
890 } else {
891 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
892 "Link Down event.\n");
893 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
894 }
895 }
896
897 static struct qed_iscsi_cb_ops qedi_cb_ops = {
898 {
899 .link_update = qedi_link_update,
900 }
901 };
902
903 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
904 u16 que_idx, struct qedi_percpu_s *p)
905 {
906 struct qedi_work *qedi_work;
907 struct qedi_conn *q_conn;
908 struct iscsi_conn *conn;
909 struct qedi_cmd *qedi_cmd;
910 u32 iscsi_cid;
911 int rc = 0;
912
913 iscsi_cid = cqe->cqe_common.conn_id;
914 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
915 if (!q_conn) {
916 QEDI_WARN(&qedi->dbg_ctx,
917 "Session no longer exists for cid=0x%x!!\n",
918 iscsi_cid);
919 return -1;
920 }
921 conn = q_conn->cls_conn->dd_data;
922
923 switch (cqe->cqe_common.cqe_type) {
924 case ISCSI_CQE_TYPE_SOLICITED:
925 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
926 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
927 if (!qedi_cmd) {
928 rc = -1;
929 break;
930 }
931 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
932 qedi_cmd->cqe_work.qedi = qedi;
933 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
934 qedi_cmd->cqe_work.que_idx = que_idx;
935 qedi_cmd->cqe_work.is_solicited = true;
936 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
937 break;
938 case ISCSI_CQE_TYPE_UNSOLICITED:
939 case ISCSI_CQE_TYPE_DUMMY:
940 case ISCSI_CQE_TYPE_TASK_CLEANUP:
941 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
942 if (!qedi_work) {
943 rc = -1;
944 break;
945 }
946 INIT_LIST_HEAD(&qedi_work->list);
947 qedi_work->qedi = qedi;
948 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
949 qedi_work->que_idx = que_idx;
950 qedi_work->is_solicited = false;
951 list_add_tail(&qedi_work->list, &p->work_list);
952 break;
953 default:
954 rc = -1;
955 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
956 }
957 return rc;
958 }
959
960 static bool qedi_process_completions(struct qedi_fastpath *fp)
961 {
962 struct qedi_ctx *qedi = fp->qedi;
963 struct qed_sb_info *sb_info = fp->sb_info;
964 struct status_block *sb = sb_info->sb_virt;
965 struct qedi_percpu_s *p = NULL;
966 struct global_queue *que;
967 u16 prod_idx;
968 unsigned long flags;
969 union iscsi_cqe *cqe;
970 int cpu;
971 int ret;
972
973 /* Get the current firmware producer index */
974 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
975
976 if (prod_idx >= QEDI_CQ_SIZE)
977 prod_idx = prod_idx % QEDI_CQ_SIZE;
978
979 que = qedi->global_queues[fp->sb_id];
980 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
981 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
982 que, prod_idx, que->cq_cons_idx, fp->sb_id);
983
984 qedi->intr_cpu = fp->sb_id;
985 cpu = smp_processor_id();
986 p = &per_cpu(qedi_percpu, cpu);
987
988 if (unlikely(!p->iothread))
989 WARN_ON(1);
990
991 spin_lock_irqsave(&p->p_work_lock, flags);
992 while (que->cq_cons_idx != prod_idx) {
993 cqe = &que->cq[que->cq_cons_idx];
994
995 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
996 "cqe=%p prod_idx=%d cons_idx=%d.\n",
997 cqe, prod_idx, que->cq_cons_idx);
998
999 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1000 if (ret)
1001 continue;
1002
1003 que->cq_cons_idx++;
1004 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1005 que->cq_cons_idx = 0;
1006 }
1007 wake_up_process(p->iothread);
1008 spin_unlock_irqrestore(&p->p_work_lock, flags);
1009
1010 return true;
1011 }
1012
1013 static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1014 {
1015 struct qedi_ctx *qedi = fp->qedi;
1016 struct global_queue *que;
1017 struct qed_sb_info *sb_info = fp->sb_info;
1018 struct status_block *sb = sb_info->sb_virt;
1019 u16 prod_idx;
1020
1021 barrier();
1022
1023 /* Get the current firmware producer index */
1024 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1025
1026 /* Get the pointer to the global CQ this completion is on */
1027 que = qedi->global_queues[fp->sb_id];
1028
1029 /* prod idx wrap around uint16 */
1030 if (prod_idx >= QEDI_CQ_SIZE)
1031 prod_idx = prod_idx % QEDI_CQ_SIZE;
1032
1033 return (que->cq_cons_idx != prod_idx);
1034 }
1035
1036 /* MSI-X fastpath handler code */
1037 static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1038 {
1039 struct qedi_fastpath *fp = dev_id;
1040 struct qedi_ctx *qedi = fp->qedi;
1041 bool wake_io_thread = true;
1042
1043 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1044
1045 process_again:
1046 wake_io_thread = qedi_process_completions(fp);
1047 if (wake_io_thread) {
1048 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1049 "process already running\n");
1050 }
1051
1052 if (qedi_fp_has_work(fp) == 0)
1053 qed_sb_update_sb_idx(fp->sb_info);
1054
1055 /* Check for more work */
1056 rmb();
1057
1058 if (qedi_fp_has_work(fp) == 0)
1059 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1060 else
1061 goto process_again;
1062
1063 return IRQ_HANDLED;
1064 }
1065
1066 /* simd handler for MSI/INTa */
1067 static void qedi_simd_int_handler(void *cookie)
1068 {
1069 /* Cookie is qedi_ctx struct */
1070 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1071
1072 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1073 }
1074
1075 #define QEDI_SIMD_HANDLER_NUM 0
1076 static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1077 {
1078 int i;
1079
1080 if (qedi->int_info.msix_cnt) {
1081 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1082 synchronize_irq(qedi->int_info.msix[i].vector);
1083 irq_set_affinity_hint(qedi->int_info.msix[i].vector,
1084 NULL);
1085 free_irq(qedi->int_info.msix[i].vector,
1086 &qedi->fp_array[i]);
1087 }
1088 } else {
1089 qedi_ops->common->simd_handler_clean(qedi->cdev,
1090 QEDI_SIMD_HANDLER_NUM);
1091 }
1092
1093 qedi->int_info.used_cnt = 0;
1094 qedi_ops->common->set_fp_int(qedi->cdev, 0);
1095 }
1096
1097 static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1098 {
1099 int i, rc, cpu;
1100
1101 cpu = cpumask_first(cpu_online_mask);
1102 for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) {
1103 rc = request_irq(qedi->int_info.msix[i].vector,
1104 qedi_msix_handler, 0, "qedi",
1105 &qedi->fp_array[i]);
1106
1107 if (rc) {
1108 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1109 qedi_sync_free_irqs(qedi);
1110 return rc;
1111 }
1112 qedi->int_info.used_cnt++;
1113 rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector,
1114 get_cpu_mask(cpu));
1115 cpu = cpumask_next(cpu, cpu_online_mask);
1116 }
1117
1118 return 0;
1119 }
1120
1121 static int qedi_setup_int(struct qedi_ctx *qedi)
1122 {
1123 int rc = 0;
1124
1125 rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus());
1126 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1127 if (rc)
1128 goto exit_setup_int;
1129
1130 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1131 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1132 qedi->int_info.msix_cnt, num_online_cpus());
1133
1134 if (qedi->int_info.msix_cnt) {
1135 rc = qedi_request_msix_irq(qedi);
1136 goto exit_setup_int;
1137 } else {
1138 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1139 QEDI_SIMD_HANDLER_NUM,
1140 qedi_simd_int_handler);
1141 qedi->int_info.used_cnt = 1;
1142 }
1143
1144 exit_setup_int:
1145 return rc;
1146 }
1147
1148 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1149 {
1150 if (qedi->iscsi_cfg)
1151 dma_free_coherent(&qedi->pdev->dev,
1152 sizeof(struct nvm_iscsi_cfg),
1153 qedi->iscsi_cfg, qedi->nvm_buf_dma);
1154 }
1155
1156 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1157 {
1158 qedi->iscsi_cfg = dma_zalloc_coherent(&qedi->pdev->dev,
1159 sizeof(struct nvm_iscsi_cfg),
1160 &qedi->nvm_buf_dma, GFP_KERNEL);
1161 if (!qedi->iscsi_cfg) {
1162 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1163 return -ENOMEM;
1164 }
1165 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1166 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_cfg,
1167 qedi->nvm_buf_dma);
1168
1169 return 0;
1170 }
1171
1172 static void qedi_free_bdq(struct qedi_ctx *qedi)
1173 {
1174 int i;
1175
1176 if (qedi->bdq_pbl_list)
1177 dma_free_coherent(&qedi->pdev->dev, PAGE_SIZE,
1178 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1179
1180 if (qedi->bdq_pbl)
1181 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1182 qedi->bdq_pbl, qedi->bdq_pbl_dma);
1183
1184 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1185 if (qedi->bdq[i].buf_addr) {
1186 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1187 qedi->bdq[i].buf_addr,
1188 qedi->bdq[i].buf_dma);
1189 }
1190 }
1191 }
1192
1193 static void qedi_free_global_queues(struct qedi_ctx *qedi)
1194 {
1195 int i;
1196 struct global_queue **gl = qedi->global_queues;
1197
1198 for (i = 0; i < qedi->num_queues; i++) {
1199 if (!gl[i])
1200 continue;
1201
1202 if (gl[i]->cq)
1203 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1204 gl[i]->cq, gl[i]->cq_dma);
1205 if (gl[i]->cq_pbl)
1206 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1207 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1208
1209 kfree(gl[i]);
1210 }
1211 qedi_free_bdq(qedi);
1212 qedi_free_nvm_iscsi_cfg(qedi);
1213 }
1214
1215 static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1216 {
1217 int i;
1218 struct scsi_bd *pbl;
1219 u64 *list;
1220 dma_addr_t page;
1221
1222 /* Alloc dma memory for BDQ buffers */
1223 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1224 qedi->bdq[i].buf_addr =
1225 dma_alloc_coherent(&qedi->pdev->dev,
1226 QEDI_BDQ_BUF_SIZE,
1227 &qedi->bdq[i].buf_dma,
1228 GFP_KERNEL);
1229 if (!qedi->bdq[i].buf_addr) {
1230 QEDI_ERR(&qedi->dbg_ctx,
1231 "Could not allocate BDQ buffer %d.\n", i);
1232 return -ENOMEM;
1233 }
1234 }
1235
1236 /* Alloc dma memory for BDQ page buffer list */
1237 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
1238 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, PAGE_SIZE);
1239 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1240
1241 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1242 qedi->rq_num_entries);
1243
1244 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1245 qedi->bdq_pbl_mem_size,
1246 &qedi->bdq_pbl_dma, GFP_KERNEL);
1247 if (!qedi->bdq_pbl) {
1248 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1249 return -ENOMEM;
1250 }
1251
1252 /*
1253 * Populate BDQ PBL with physical and virtual address of individual
1254 * BDQ buffers
1255 */
1256 pbl = (struct scsi_bd *)qedi->bdq_pbl;
1257 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1258 pbl->address.hi =
1259 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1260 pbl->address.lo =
1261 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1262 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1263 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1264 pbl, pbl->address.hi, pbl->address.lo, i);
1265 pbl->opaque.hi = 0;
1266 pbl->opaque.lo = cpu_to_le32(QEDI_U64_LO(i));
1267 pbl++;
1268 }
1269
1270 /* Allocate list of PBL pages */
1271 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
1272 PAGE_SIZE,
1273 &qedi->bdq_pbl_list_dma,
1274 GFP_KERNEL);
1275 if (!qedi->bdq_pbl_list) {
1276 QEDI_ERR(&qedi->dbg_ctx,
1277 "Could not allocate list of PBL pages.\n");
1278 return -ENOMEM;
1279 }
1280 memset(qedi->bdq_pbl_list, 0, PAGE_SIZE);
1281
1282 /*
1283 * Now populate PBL list with pages that contain pointers to the
1284 * individual buffers.
1285 */
1286 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / PAGE_SIZE;
1287 list = (u64 *)qedi->bdq_pbl_list;
1288 page = qedi->bdq_pbl_list_dma;
1289 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1290 *list = qedi->bdq_pbl_dma;
1291 list++;
1292 page += PAGE_SIZE;
1293 }
1294
1295 return 0;
1296 }
1297
1298 static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1299 {
1300 u32 *list;
1301 int i;
1302 int status = 0, rc;
1303 u32 *pbl;
1304 dma_addr_t page;
1305 int num_pages;
1306
1307 /*
1308 * Number of global queues (CQ / RQ). This should
1309 * be <= number of available MSIX vectors for the PF
1310 */
1311 if (!qedi->num_queues) {
1312 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1313 return 1;
1314 }
1315
1316 /* Make sure we allocated the PBL that will contain the physical
1317 * addresses of our queues
1318 */
1319 if (!qedi->p_cpuq) {
1320 status = 1;
1321 goto mem_alloc_failure;
1322 }
1323
1324 qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1325 qedi->num_queues), GFP_KERNEL);
1326 if (!qedi->global_queues) {
1327 QEDI_ERR(&qedi->dbg_ctx,
1328 "Unable to allocate global queues array ptr memory\n");
1329 return -ENOMEM;
1330 }
1331 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1332 "qedi->global_queues=%p.\n", qedi->global_queues);
1333
1334 /* Allocate DMA coherent buffers for BDQ */
1335 rc = qedi_alloc_bdq(qedi);
1336 if (rc)
1337 goto mem_alloc_failure;
1338
1339 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
1340 rc = qedi_alloc_nvm_iscsi_cfg(qedi);
1341 if (rc)
1342 goto mem_alloc_failure;
1343
1344 /* Allocate a CQ and an associated PBL for each MSI-X
1345 * vector.
1346 */
1347 for (i = 0; i < qedi->num_queues; i++) {
1348 qedi->global_queues[i] =
1349 kzalloc(sizeof(*qedi->global_queues[0]),
1350 GFP_KERNEL);
1351 if (!qedi->global_queues[i]) {
1352 QEDI_ERR(&qedi->dbg_ctx,
1353 "Unable to allocation global queue %d.\n", i);
1354 goto mem_alloc_failure;
1355 }
1356
1357 qedi->global_queues[i]->cq_mem_size =
1358 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1359 qedi->global_queues[i]->cq_mem_size =
1360 (qedi->global_queues[i]->cq_mem_size +
1361 (QEDI_PAGE_SIZE - 1));
1362
1363 qedi->global_queues[i]->cq_pbl_size =
1364 (qedi->global_queues[i]->cq_mem_size /
1365 QEDI_PAGE_SIZE) * sizeof(void *);
1366 qedi->global_queues[i]->cq_pbl_size =
1367 (qedi->global_queues[i]->cq_pbl_size +
1368 (QEDI_PAGE_SIZE - 1));
1369
1370 qedi->global_queues[i]->cq =
1371 dma_alloc_coherent(&qedi->pdev->dev,
1372 qedi->global_queues[i]->cq_mem_size,
1373 &qedi->global_queues[i]->cq_dma,
1374 GFP_KERNEL);
1375
1376 if (!qedi->global_queues[i]->cq) {
1377 QEDI_WARN(&qedi->dbg_ctx,
1378 "Could not allocate cq.\n");
1379 status = -ENOMEM;
1380 goto mem_alloc_failure;
1381 }
1382 memset(qedi->global_queues[i]->cq, 0,
1383 qedi->global_queues[i]->cq_mem_size);
1384
1385 qedi->global_queues[i]->cq_pbl =
1386 dma_alloc_coherent(&qedi->pdev->dev,
1387 qedi->global_queues[i]->cq_pbl_size,
1388 &qedi->global_queues[i]->cq_pbl_dma,
1389 GFP_KERNEL);
1390
1391 if (!qedi->global_queues[i]->cq_pbl) {
1392 QEDI_WARN(&qedi->dbg_ctx,
1393 "Could not allocate cq PBL.\n");
1394 status = -ENOMEM;
1395 goto mem_alloc_failure;
1396 }
1397 memset(qedi->global_queues[i]->cq_pbl, 0,
1398 qedi->global_queues[i]->cq_pbl_size);
1399
1400 /* Create PBL */
1401 num_pages = qedi->global_queues[i]->cq_mem_size /
1402 QEDI_PAGE_SIZE;
1403 page = qedi->global_queues[i]->cq_dma;
1404 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1405
1406 while (num_pages--) {
1407 *pbl = (u32)page;
1408 pbl++;
1409 *pbl = (u32)((u64)page >> 32);
1410 pbl++;
1411 page += QEDI_PAGE_SIZE;
1412 }
1413 }
1414
1415 list = (u32 *)qedi->p_cpuq;
1416
1417 /*
1418 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
1419 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
1420 * to the physical address which contains an array of pointers to the
1421 * physical addresses of the specific queue pages.
1422 */
1423 for (i = 0; i < qedi->num_queues; i++) {
1424 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1425 list++;
1426 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1427 list++;
1428
1429 *list = (u32)0;
1430 list++;
1431 *list = (u32)((u64)0 >> 32);
1432 list++;
1433 }
1434
1435 return 0;
1436
1437 mem_alloc_failure:
1438 qedi_free_global_queues(qedi);
1439 return status;
1440 }
1441
1442 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1443 {
1444 int rval = 0;
1445 u32 *pbl;
1446 dma_addr_t page;
1447 int num_pages;
1448
1449 if (!ep)
1450 return -EIO;
1451
1452 /* Calculate appropriate queue and PBL sizes */
1453 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1454 ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1455
1456 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1457 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1458
1459 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1460 &ep->sq_dma, GFP_KERNEL);
1461 if (!ep->sq) {
1462 QEDI_WARN(&qedi->dbg_ctx,
1463 "Could not allocate send queue.\n");
1464 rval = -ENOMEM;
1465 goto out;
1466 }
1467 memset(ep->sq, 0, ep->sq_mem_size);
1468
1469 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1470 &ep->sq_pbl_dma, GFP_KERNEL);
1471 if (!ep->sq_pbl) {
1472 QEDI_WARN(&qedi->dbg_ctx,
1473 "Could not allocate send queue PBL.\n");
1474 rval = -ENOMEM;
1475 goto out_free_sq;
1476 }
1477 memset(ep->sq_pbl, 0, ep->sq_pbl_size);
1478
1479 /* Create PBL */
1480 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1481 page = ep->sq_dma;
1482 pbl = (u32 *)ep->sq_pbl;
1483
1484 while (num_pages--) {
1485 *pbl = (u32)page;
1486 pbl++;
1487 *pbl = (u32)((u64)page >> 32);
1488 pbl++;
1489 page += QEDI_PAGE_SIZE;
1490 }
1491
1492 return rval;
1493
1494 out_free_sq:
1495 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1496 ep->sq_dma);
1497 out:
1498 return rval;
1499 }
1500
1501 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1502 {
1503 if (ep->sq_pbl)
1504 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1505 ep->sq_pbl_dma);
1506 if (ep->sq)
1507 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1508 ep->sq_dma);
1509 }
1510
1511 int qedi_get_task_idx(struct qedi_ctx *qedi)
1512 {
1513 s16 tmp_idx;
1514
1515 again:
1516 tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1517 MAX_ISCSI_TASK_ENTRIES);
1518
1519 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1520 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1521 tmp_idx = -1;
1522 goto err_idx;
1523 }
1524
1525 if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1526 goto again;
1527
1528 err_idx:
1529 return tmp_idx;
1530 }
1531
1532 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1533 {
1534 if (!test_and_clear_bit(idx, qedi->task_idx_map))
1535 QEDI_ERR(&qedi->dbg_ctx,
1536 "FW task context, already cleared, tid=0x%x\n", idx);
1537 }
1538
1539 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1540 struct qedi_cmd *cmd)
1541 {
1542 qedi->itt_map[tid].itt = proto_itt;
1543 qedi->itt_map[tid].p_cmd = cmd;
1544
1545 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1546 "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1547 qedi->itt_map[tid].itt);
1548 }
1549
1550 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1551 {
1552 u16 i;
1553
1554 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1555 if (qedi->itt_map[i].itt == itt) {
1556 *tid = i;
1557 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1558 "Ref itt=0x%x, found at tid=0x%x\n",
1559 itt, *tid);
1560 return;
1561 }
1562 }
1563
1564 WARN_ON(1);
1565 }
1566
1567 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1568 {
1569 *proto_itt = qedi->itt_map[tid].itt;
1570 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1571 "Get itt map tid [0x%x with proto itt[0x%x]",
1572 tid, *proto_itt);
1573 }
1574
1575 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1576 {
1577 struct qedi_cmd *cmd = NULL;
1578
1579 if (tid >= MAX_ISCSI_TASK_ENTRIES)
1580 return NULL;
1581
1582 cmd = qedi->itt_map[tid].p_cmd;
1583 if (cmd->task_id != tid)
1584 return NULL;
1585
1586 qedi->itt_map[tid].p_cmd = NULL;
1587
1588 return cmd;
1589 }
1590
1591 static int qedi_alloc_itt(struct qedi_ctx *qedi)
1592 {
1593 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1594 sizeof(struct qedi_itt_map), GFP_KERNEL);
1595 if (!qedi->itt_map) {
1596 QEDI_ERR(&qedi->dbg_ctx,
1597 "Unable to allocate itt map array memory\n");
1598 return -ENOMEM;
1599 }
1600 return 0;
1601 }
1602
1603 static void qedi_free_itt(struct qedi_ctx *qedi)
1604 {
1605 kfree(qedi->itt_map);
1606 }
1607
1608 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1609 .rx_cb = qedi_ll2_rx,
1610 .tx_cb = NULL,
1611 };
1612
1613 static int qedi_percpu_io_thread(void *arg)
1614 {
1615 struct qedi_percpu_s *p = arg;
1616 struct qedi_work *work, *tmp;
1617 unsigned long flags;
1618 LIST_HEAD(work_list);
1619
1620 set_user_nice(current, -20);
1621
1622 while (!kthread_should_stop()) {
1623 spin_lock_irqsave(&p->p_work_lock, flags);
1624 while (!list_empty(&p->work_list)) {
1625 list_splice_init(&p->work_list, &work_list);
1626 spin_unlock_irqrestore(&p->p_work_lock, flags);
1627
1628 list_for_each_entry_safe(work, tmp, &work_list, list) {
1629 list_del_init(&work->list);
1630 qedi_fp_process_cqes(work);
1631 if (!work->is_solicited)
1632 kfree(work);
1633 }
1634 cond_resched();
1635 spin_lock_irqsave(&p->p_work_lock, flags);
1636 }
1637 set_current_state(TASK_INTERRUPTIBLE);
1638 spin_unlock_irqrestore(&p->p_work_lock, flags);
1639 schedule();
1640 }
1641 __set_current_state(TASK_RUNNING);
1642
1643 return 0;
1644 }
1645
1646 static int qedi_cpu_online(unsigned int cpu)
1647 {
1648 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1649 struct task_struct *thread;
1650
1651 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1652 cpu_to_node(cpu),
1653 "qedi_thread/%d", cpu);
1654 if (IS_ERR(thread))
1655 return PTR_ERR(thread);
1656
1657 kthread_bind(thread, cpu);
1658 p->iothread = thread;
1659 wake_up_process(thread);
1660 return 0;
1661 }
1662
1663 static int qedi_cpu_offline(unsigned int cpu)
1664 {
1665 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1666 struct qedi_work *work, *tmp;
1667 struct task_struct *thread;
1668
1669 spin_lock_bh(&p->p_work_lock);
1670 thread = p->iothread;
1671 p->iothread = NULL;
1672
1673 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1674 list_del_init(&work->list);
1675 qedi_fp_process_cqes(work);
1676 if (!work->is_solicited)
1677 kfree(work);
1678 }
1679
1680 spin_unlock_bh(&p->p_work_lock);
1681 if (thread)
1682 kthread_stop(thread);
1683 return 0;
1684 }
1685
1686 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
1687 {
1688 struct qed_ll2_params params;
1689
1690 qedi_recover_all_conns(qedi);
1691
1692 qedi_ops->ll2->stop(qedi->cdev);
1693 qedi_ll2_free_skbs(qedi);
1694
1695 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
1696 qedi->ll2_mtu, mtu);
1697 memset(&params, 0, sizeof(params));
1698 qedi->ll2_mtu = mtu;
1699 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
1700 params.drop_ttl0_packets = 0;
1701 params.rx_vlan_stripping = 1;
1702 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
1703 qedi_ops->ll2->start(qedi->cdev, &params);
1704 }
1705
1706 /**
1707 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
1708 * for gaps) for the matching absolute-pf-id of the QEDI device.
1709 */
1710 static struct nvm_iscsi_block *
1711 qedi_get_nvram_block(struct qedi_ctx *qedi)
1712 {
1713 int i;
1714 u8 pf;
1715 u32 flags;
1716 struct nvm_iscsi_block *block;
1717
1718 pf = qedi->dev_info.common.abs_pf_id;
1719 block = &qedi->iscsi_cfg->block[0];
1720 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
1721 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
1722 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
1723 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
1724 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
1725 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
1726 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
1727 return block;
1728 }
1729 return NULL;
1730 }
1731
1732 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
1733 {
1734 struct qedi_ctx *qedi = data;
1735 struct nvm_iscsi_initiator *initiator;
1736 char *str = buf;
1737 int rc = 1;
1738 u32 ipv6_en, dhcp_en, ip_len;
1739 struct nvm_iscsi_block *block;
1740 char *fmt, *ip, *sub, *gw;
1741
1742 block = qedi_get_nvram_block(qedi);
1743 if (!block)
1744 return 0;
1745
1746 initiator = &block->initiator;
1747 ipv6_en = block->generic.ctrl_flags &
1748 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
1749 dhcp_en = block->generic.ctrl_flags &
1750 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
1751 /* Static IP assignments. */
1752 fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
1753 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
1754 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
1755 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
1756 initiator->ipv4.subnet_mask.byte;
1757 gw = ipv6_en ? initiator->ipv6.gateway.byte :
1758 initiator->ipv4.gateway.byte;
1759 /* DHCP IP adjustments. */
1760 fmt = dhcp_en ? "%s\n" : fmt;
1761 if (dhcp_en) {
1762 ip = ipv6_en ? "0::0" : "0.0.0.0";
1763 sub = ip;
1764 gw = ip;
1765 ip_len = ipv6_en ? 5 : 8;
1766 }
1767
1768 switch (type) {
1769 case ISCSI_BOOT_ETH_IP_ADDR:
1770 rc = snprintf(str, ip_len, fmt, ip);
1771 break;
1772 case ISCSI_BOOT_ETH_SUBNET_MASK:
1773 rc = snprintf(str, ip_len, fmt, sub);
1774 break;
1775 case ISCSI_BOOT_ETH_GATEWAY:
1776 rc = snprintf(str, ip_len, fmt, gw);
1777 break;
1778 case ISCSI_BOOT_ETH_FLAGS:
1779 rc = snprintf(str, 3, "%hhd\n",
1780 SYSFS_FLAG_FW_SEL_BOOT);
1781 break;
1782 case ISCSI_BOOT_ETH_INDEX:
1783 rc = snprintf(str, 3, "0\n");
1784 break;
1785 case ISCSI_BOOT_ETH_MAC:
1786 rc = sysfs_format_mac(str, qedi->mac, ETH_ALEN);
1787 break;
1788 case ISCSI_BOOT_ETH_VLAN:
1789 rc = snprintf(str, 12, "%d\n",
1790 GET_FIELD2(initiator->generic_cont0,
1791 NVM_ISCSI_CFG_INITIATOR_VLAN));
1792 break;
1793 case ISCSI_BOOT_ETH_ORIGIN:
1794 if (dhcp_en)
1795 rc = snprintf(str, 3, "3\n");
1796 break;
1797 default:
1798 rc = 0;
1799 break;
1800 }
1801
1802 return rc;
1803 }
1804
1805 static umode_t qedi_eth_get_attr_visibility(void *data, int type)
1806 {
1807 int rc = 1;
1808
1809 switch (type) {
1810 case ISCSI_BOOT_ETH_FLAGS:
1811 case ISCSI_BOOT_ETH_MAC:
1812 case ISCSI_BOOT_ETH_INDEX:
1813 case ISCSI_BOOT_ETH_IP_ADDR:
1814 case ISCSI_BOOT_ETH_SUBNET_MASK:
1815 case ISCSI_BOOT_ETH_GATEWAY:
1816 case ISCSI_BOOT_ETH_ORIGIN:
1817 case ISCSI_BOOT_ETH_VLAN:
1818 rc = 0444;
1819 break;
1820 default:
1821 rc = 0;
1822 break;
1823 }
1824 return rc;
1825 }
1826
1827 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
1828 {
1829 struct qedi_ctx *qedi = data;
1830 struct nvm_iscsi_initiator *initiator;
1831 char *str = buf;
1832 int rc;
1833 struct nvm_iscsi_block *block;
1834
1835 block = qedi_get_nvram_block(qedi);
1836 if (!block)
1837 return 0;
1838
1839 initiator = &block->initiator;
1840
1841 switch (type) {
1842 case ISCSI_BOOT_INI_INITIATOR_NAME:
1843 rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n",
1844 initiator->initiator_name.byte);
1845 break;
1846 default:
1847 rc = 0;
1848 break;
1849 }
1850 return rc;
1851 }
1852
1853 static umode_t qedi_ini_get_attr_visibility(void *data, int type)
1854 {
1855 int rc;
1856
1857 switch (type) {
1858 case ISCSI_BOOT_INI_INITIATOR_NAME:
1859 rc = 0444;
1860 break;
1861 default:
1862 rc = 0;
1863 break;
1864 }
1865 return rc;
1866 }
1867
1868 static ssize_t
1869 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
1870 char *buf, enum qedi_nvm_tgts idx)
1871 {
1872 char *str = buf;
1873 int rc = 1;
1874 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
1875 struct nvm_iscsi_block *block;
1876 char *chap_name, *chap_secret;
1877 char *mchap_name, *mchap_secret;
1878
1879 block = qedi_get_nvram_block(qedi);
1880 if (!block)
1881 goto exit_show_tgt_info;
1882
1883 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
1884 "Port:%d, tgt_idx:%d\n",
1885 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
1886
1887 ctrl_flags = block->target[idx].ctrl_flags &
1888 NVM_ISCSI_CFG_TARGET_ENABLED;
1889
1890 if (!ctrl_flags) {
1891 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
1892 "Target disabled\n");
1893 goto exit_show_tgt_info;
1894 }
1895
1896 ipv6_en = block->generic.ctrl_flags &
1897 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
1898 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
1899 chap_en = block->generic.ctrl_flags &
1900 NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
1901 chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
1902 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
1903
1904 mchap_en = block->generic.ctrl_flags &
1905 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
1906 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
1907 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
1908
1909 switch (type) {
1910 case ISCSI_BOOT_TGT_NAME:
1911 rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n",
1912 block->target[idx].target_name.byte);
1913 break;
1914 case ISCSI_BOOT_TGT_IP_ADDR:
1915 if (ipv6_en)
1916 rc = snprintf(str, ip_len, "%pI6\n",
1917 block->target[idx].ipv6_addr.byte);
1918 else
1919 rc = snprintf(str, ip_len, "%pI4\n",
1920 block->target[idx].ipv4_addr.byte);
1921 break;
1922 case ISCSI_BOOT_TGT_PORT:
1923 rc = snprintf(str, 12, "%d\n",
1924 GET_FIELD2(block->target[idx].generic_cont0,
1925 NVM_ISCSI_CFG_TARGET_TCP_PORT));
1926 break;
1927 case ISCSI_BOOT_TGT_LUN:
1928 rc = snprintf(str, 22, "%.*d\n",
1929 block->target[idx].lun.value[1],
1930 block->target[idx].lun.value[0]);
1931 break;
1932 case ISCSI_BOOT_TGT_CHAP_NAME:
1933 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n",
1934 chap_name);
1935 break;
1936 case ISCSI_BOOT_TGT_CHAP_SECRET:
1937 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n",
1938 chap_secret);
1939 break;
1940 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
1941 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n",
1942 mchap_name);
1943 break;
1944 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
1945 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n",
1946 mchap_secret);
1947 break;
1948 case ISCSI_BOOT_TGT_FLAGS:
1949 rc = snprintf(str, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
1950 break;
1951 case ISCSI_BOOT_TGT_NIC_ASSOC:
1952 rc = snprintf(str, 3, "0\n");
1953 break;
1954 default:
1955 rc = 0;
1956 break;
1957 }
1958
1959 exit_show_tgt_info:
1960 return rc;
1961 }
1962
1963 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
1964 {
1965 struct qedi_ctx *qedi = data;
1966
1967 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
1968 }
1969
1970 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
1971 {
1972 struct qedi_ctx *qedi = data;
1973
1974 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
1975 }
1976
1977 static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
1978 {
1979 int rc;
1980
1981 switch (type) {
1982 case ISCSI_BOOT_TGT_NAME:
1983 case ISCSI_BOOT_TGT_IP_ADDR:
1984 case ISCSI_BOOT_TGT_PORT:
1985 case ISCSI_BOOT_TGT_LUN:
1986 case ISCSI_BOOT_TGT_CHAP_NAME:
1987 case ISCSI_BOOT_TGT_CHAP_SECRET:
1988 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
1989 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
1990 case ISCSI_BOOT_TGT_NIC_ASSOC:
1991 case ISCSI_BOOT_TGT_FLAGS:
1992 rc = 0444;
1993 break;
1994 default:
1995 rc = 0;
1996 break;
1997 }
1998 return rc;
1999 }
2000
2001 static void qedi_boot_release(void *data)
2002 {
2003 struct qedi_ctx *qedi = data;
2004
2005 scsi_host_put(qedi->shost);
2006 }
2007
2008 static int qedi_get_boot_info(struct qedi_ctx *qedi)
2009 {
2010 int ret = 1;
2011 u16 len;
2012
2013 len = sizeof(struct nvm_iscsi_cfg);
2014
2015 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2016 "Get NVM iSCSI CFG image\n");
2017 ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2018 QED_NVM_IMAGE_ISCSI_CFG,
2019 (char *)qedi->iscsi_cfg, len);
2020 if (ret)
2021 QEDI_ERR(&qedi->dbg_ctx,
2022 "Could not get NVM image. ret = %d\n", ret);
2023
2024 return ret;
2025 }
2026
2027 static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2028 {
2029 struct iscsi_boot_kobj *boot_kobj;
2030
2031 if (qedi_get_boot_info(qedi))
2032 return -EPERM;
2033
2034 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2035 if (!qedi->boot_kset)
2036 goto kset_free;
2037
2038 if (!scsi_host_get(qedi->shost))
2039 goto kset_free;
2040
2041 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2042 qedi_show_boot_tgt_pri_info,
2043 qedi_tgt_get_attr_visibility,
2044 qedi_boot_release);
2045 if (!boot_kobj)
2046 goto put_host;
2047
2048 if (!scsi_host_get(qedi->shost))
2049 goto kset_free;
2050
2051 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2052 qedi_show_boot_tgt_sec_info,
2053 qedi_tgt_get_attr_visibility,
2054 qedi_boot_release);
2055 if (!boot_kobj)
2056 goto put_host;
2057
2058 if (!scsi_host_get(qedi->shost))
2059 goto kset_free;
2060
2061 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2062 qedi_show_boot_ini_info,
2063 qedi_ini_get_attr_visibility,
2064 qedi_boot_release);
2065 if (!boot_kobj)
2066 goto put_host;
2067
2068 if (!scsi_host_get(qedi->shost))
2069 goto kset_free;
2070
2071 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2072 qedi_show_boot_eth_info,
2073 qedi_eth_get_attr_visibility,
2074 qedi_boot_release);
2075 if (!boot_kobj)
2076 goto put_host;
2077
2078 return 0;
2079
2080 put_host:
2081 scsi_host_put(qedi->shost);
2082 kset_free:
2083 iscsi_boot_destroy_kset(qedi->boot_kset);
2084 return -ENOMEM;
2085 }
2086
2087 static void __qedi_remove(struct pci_dev *pdev, int mode)
2088 {
2089 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2090
2091 if (qedi->tmf_thread) {
2092 flush_workqueue(qedi->tmf_thread);
2093 destroy_workqueue(qedi->tmf_thread);
2094 qedi->tmf_thread = NULL;
2095 }
2096
2097 if (qedi->offload_thread) {
2098 flush_workqueue(qedi->offload_thread);
2099 destroy_workqueue(qedi->offload_thread);
2100 qedi->offload_thread = NULL;
2101 }
2102
2103 #ifdef CONFIG_DEBUG_FS
2104 qedi_dbg_host_exit(&qedi->dbg_ctx);
2105 #endif
2106 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2107 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2108
2109 qedi_sync_free_irqs(qedi);
2110
2111 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2112 qedi_ops->stop(qedi->cdev);
2113 qedi_ops->ll2->stop(qedi->cdev);
2114 }
2115
2116 if (mode == QEDI_MODE_NORMAL)
2117 qedi_free_iscsi_pf_param(qedi);
2118
2119 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2120 qedi_ops->common->slowpath_stop(qedi->cdev);
2121 qedi_ops->common->remove(qedi->cdev);
2122 }
2123
2124 qedi_destroy_fp(qedi);
2125
2126 if (mode == QEDI_MODE_NORMAL) {
2127 qedi_release_cid_que(qedi);
2128 qedi_cm_free_mem(qedi);
2129 qedi_free_uio(qedi->udev);
2130 qedi_free_itt(qedi);
2131
2132 iscsi_host_remove(qedi->shost);
2133 iscsi_host_free(qedi->shost);
2134
2135 if (qedi->ll2_recv_thread) {
2136 kthread_stop(qedi->ll2_recv_thread);
2137 qedi->ll2_recv_thread = NULL;
2138 }
2139 qedi_ll2_free_skbs(qedi);
2140
2141 if (qedi->boot_kset)
2142 iscsi_boot_destroy_kset(qedi->boot_kset);
2143 }
2144 }
2145
2146 static int __qedi_probe(struct pci_dev *pdev, int mode)
2147 {
2148 struct qedi_ctx *qedi;
2149 struct qed_ll2_params params;
2150 u32 dp_module = 0;
2151 u8 dp_level = 0;
2152 bool is_vf = false;
2153 char host_buf[16];
2154 struct qed_link_params link_params;
2155 struct qed_slowpath_params sp_params;
2156 struct qed_probe_params qed_params;
2157 void *task_start, *task_end;
2158 int rc;
2159 u16 tmp;
2160
2161 if (mode != QEDI_MODE_RECOVERY) {
2162 qedi = qedi_host_alloc(pdev);
2163 if (!qedi) {
2164 rc = -ENOMEM;
2165 goto exit_probe;
2166 }
2167 } else {
2168 qedi = pci_get_drvdata(pdev);
2169 }
2170
2171 memset(&qed_params, 0, sizeof(qed_params));
2172 qed_params.protocol = QED_PROTOCOL_ISCSI;
2173 qed_params.dp_module = dp_module;
2174 qed_params.dp_level = dp_level;
2175 qed_params.is_vf = is_vf;
2176 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2177 if (!qedi->cdev) {
2178 rc = -ENODEV;
2179 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2180 goto free_host;
2181 }
2182
2183 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2184
2185 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2186 if (rc)
2187 goto free_host;
2188
2189 if (mode != QEDI_MODE_RECOVERY) {
2190 rc = qedi_set_iscsi_pf_param(qedi);
2191 if (rc) {
2192 rc = -ENOMEM;
2193 QEDI_ERR(&qedi->dbg_ctx,
2194 "Set iSCSI pf param fail\n");
2195 goto free_host;
2196 }
2197 }
2198
2199 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2200
2201 rc = qedi_prepare_fp(qedi);
2202 if (rc) {
2203 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2204 goto free_pf_params;
2205 }
2206
2207 /* Start the Slowpath-process */
2208 memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2209 sp_params.int_mode = QED_INT_MODE_MSIX;
2210 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2211 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2212 sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2213 sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2214 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2215 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2216 if (rc) {
2217 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2218 goto stop_hw;
2219 }
2220
2221 /* update_pf_params needs to be called before and after slowpath
2222 * start
2223 */
2224 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2225
2226 rc = qedi_setup_int(qedi);
2227 if (rc)
2228 goto stop_iscsi_func;
2229
2230 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2231
2232 /* Learn information crucial for qedi to progress */
2233 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2234 if (rc)
2235 goto stop_iscsi_func;
2236
2237 /* Record BDQ producer doorbell addresses */
2238 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2239 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2240 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2241 "BDQ primary_prod=%p secondary_prod=%p.\n",
2242 qedi->bdq_primary_prod,
2243 qedi->bdq_secondary_prod);
2244
2245 /*
2246 * We need to write the number of BDs in the BDQ we've preallocated so
2247 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
2248 * packet arrives.
2249 */
2250 qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2251 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2252 "Writing %d to primary and secondary BDQ doorbell registers.\n",
2253 qedi->bdq_prod_idx);
2254 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2255 tmp = readw(qedi->bdq_primary_prod);
2256 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2257 tmp = readw(qedi->bdq_secondary_prod);
2258
2259 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2260 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2261 qedi->mac);
2262
2263 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2264 qedi_ops->common->set_name(qedi->cdev, host_buf);
2265
2266 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2267
2268 memset(&params, 0, sizeof(params));
2269 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2270 qedi->ll2_mtu = DEF_PATH_MTU;
2271 params.drop_ttl0_packets = 0;
2272 params.rx_vlan_stripping = 1;
2273 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2274
2275 if (mode != QEDI_MODE_RECOVERY) {
2276 /* set up rx path */
2277 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2278 spin_lock_init(&qedi->ll2_lock);
2279 /* start qedi context */
2280 spin_lock_init(&qedi->hba_lock);
2281 spin_lock_init(&qedi->task_idx_lock);
2282 }
2283 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2284 qedi_ops->ll2->start(qedi->cdev, &params);
2285
2286 if (mode != QEDI_MODE_RECOVERY) {
2287 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2288 (void *)qedi,
2289 "qedi_ll2_thread");
2290 }
2291
2292 rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2293 qedi, qedi_iscsi_event_cb);
2294 if (rc) {
2295 rc = -ENODEV;
2296 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2297 goto stop_slowpath;
2298 }
2299
2300 task_start = qedi_get_task_mem(&qedi->tasks, 0);
2301 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2302 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2303 "Task context start=%p, end=%p block_size=%u.\n",
2304 task_start, task_end, qedi->tasks.size);
2305
2306 memset(&link_params, 0, sizeof(link_params));
2307 link_params.link_up = true;
2308 rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2309 if (rc) {
2310 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2311 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2312 }
2313
2314 #ifdef CONFIG_DEBUG_FS
2315 qedi_dbg_host_init(&qedi->dbg_ctx, &qedi_debugfs_ops,
2316 &qedi_dbg_fops);
2317 #endif
2318 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2319 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2320 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2321 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2322
2323 if (mode == QEDI_MODE_NORMAL) {
2324 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2325 QEDI_ERR(&qedi->dbg_ctx,
2326 "Could not add iscsi host\n");
2327 rc = -ENOMEM;
2328 goto remove_host;
2329 }
2330
2331 /* Allocate uio buffers */
2332 rc = qedi_alloc_uio_rings(qedi);
2333 if (rc) {
2334 QEDI_ERR(&qedi->dbg_ctx,
2335 "UIO alloc ring failed err=%d\n", rc);
2336 goto remove_host;
2337 }
2338
2339 rc = qedi_init_uio(qedi);
2340 if (rc) {
2341 QEDI_ERR(&qedi->dbg_ctx,
2342 "UIO init failed, err=%d\n", rc);
2343 goto free_uio;
2344 }
2345
2346 /* host the array on iscsi_conn */
2347 rc = qedi_setup_cid_que(qedi);
2348 if (rc) {
2349 QEDI_ERR(&qedi->dbg_ctx,
2350 "Could not setup cid que\n");
2351 goto free_uio;
2352 }
2353
2354 rc = qedi_cm_alloc_mem(qedi);
2355 if (rc) {
2356 QEDI_ERR(&qedi->dbg_ctx,
2357 "Could not alloc cm memory\n");
2358 goto free_cid_que;
2359 }
2360
2361 rc = qedi_alloc_itt(qedi);
2362 if (rc) {
2363 QEDI_ERR(&qedi->dbg_ctx,
2364 "Could not alloc itt memory\n");
2365 goto free_cid_que;
2366 }
2367
2368 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2369 qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2370 if (!qedi->tmf_thread) {
2371 QEDI_ERR(&qedi->dbg_ctx,
2372 "Unable to start tmf thread!\n");
2373 rc = -ENODEV;
2374 goto free_cid_que;
2375 }
2376
2377 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2378 qedi->offload_thread = create_workqueue(host_buf);
2379 if (!qedi->offload_thread) {
2380 QEDI_ERR(&qedi->dbg_ctx,
2381 "Unable to start offload thread!\n");
2382 rc = -ENODEV;
2383 goto free_cid_que;
2384 }
2385
2386 /* F/w needs 1st task context memory entry for performance */
2387 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2388 atomic_set(&qedi->num_offloads, 0);
2389
2390 if (qedi_setup_boot_info(qedi))
2391 QEDI_ERR(&qedi->dbg_ctx,
2392 "No iSCSI boot target configured\n");
2393 }
2394
2395 return 0;
2396
2397 free_cid_que:
2398 qedi_release_cid_que(qedi);
2399 free_uio:
2400 qedi_free_uio(qedi->udev);
2401 remove_host:
2402 #ifdef CONFIG_DEBUG_FS
2403 qedi_dbg_host_exit(&qedi->dbg_ctx);
2404 #endif
2405 iscsi_host_remove(qedi->shost);
2406 stop_iscsi_func:
2407 qedi_ops->stop(qedi->cdev);
2408 stop_slowpath:
2409 qedi_ops->common->slowpath_stop(qedi->cdev);
2410 stop_hw:
2411 qedi_ops->common->remove(qedi->cdev);
2412 free_pf_params:
2413 qedi_free_iscsi_pf_param(qedi);
2414 free_host:
2415 iscsi_host_free(qedi->shost);
2416 exit_probe:
2417 return rc;
2418 }
2419
2420 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2421 {
2422 return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2423 }
2424
2425 static void qedi_remove(struct pci_dev *pdev)
2426 {
2427 __qedi_remove(pdev, QEDI_MODE_NORMAL);
2428 }
2429
2430 static struct pci_device_id qedi_pci_tbl[] = {
2431 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2432 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2433 { 0 },
2434 };
2435 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2436
2437 static enum cpuhp_state qedi_cpuhp_state;
2438
2439 static struct pci_driver qedi_pci_driver = {
2440 .name = QEDI_MODULE_NAME,
2441 .id_table = qedi_pci_tbl,
2442 .probe = qedi_probe,
2443 .remove = qedi_remove,
2444 };
2445
2446 static int __init qedi_init(void)
2447 {
2448 struct qedi_percpu_s *p;
2449 int cpu, rc = 0;
2450
2451 qedi_ops = qed_get_iscsi_ops();
2452 if (!qedi_ops) {
2453 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2454 return -EINVAL;
2455 }
2456
2457 #ifdef CONFIG_DEBUG_FS
2458 qedi_dbg_init("qedi");
2459 #endif
2460
2461 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2462 if (!qedi_scsi_transport) {
2463 QEDI_ERR(NULL, "Could not register qedi transport");
2464 rc = -ENOMEM;
2465 goto exit_qedi_init_1;
2466 }
2467
2468 for_each_possible_cpu(cpu) {
2469 p = &per_cpu(qedi_percpu, cpu);
2470 INIT_LIST_HEAD(&p->work_list);
2471 spin_lock_init(&p->p_work_lock);
2472 p->iothread = NULL;
2473 }
2474
2475 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2476 qedi_cpu_online, qedi_cpu_offline);
2477 if (rc < 0)
2478 goto exit_qedi_init_2;
2479 qedi_cpuhp_state = rc;
2480
2481 rc = pci_register_driver(&qedi_pci_driver);
2482 if (rc) {
2483 QEDI_ERR(NULL, "Failed to register driver\n");
2484 goto exit_qedi_hp;
2485 }
2486
2487 return 0;
2488
2489 exit_qedi_hp:
2490 cpuhp_remove_state(qedi_cpuhp_state);
2491 exit_qedi_init_2:
2492 iscsi_unregister_transport(&qedi_iscsi_transport);
2493 exit_qedi_init_1:
2494 #ifdef CONFIG_DEBUG_FS
2495 qedi_dbg_exit();
2496 #endif
2497 qed_put_iscsi_ops();
2498 return rc;
2499 }
2500
2501 static void __exit qedi_cleanup(void)
2502 {
2503 pci_unregister_driver(&qedi_pci_driver);
2504 cpuhp_remove_state(qedi_cpuhp_state);
2505 iscsi_unregister_transport(&qedi_iscsi_transport);
2506
2507 #ifdef CONFIG_DEBUG_FS
2508 qedi_dbg_exit();
2509 #endif
2510 qed_put_iscsi_ops();
2511 }
2512
2513 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2514 MODULE_LICENSE("GPL");
2515 MODULE_AUTHOR("QLogic Corporation");
2516 MODULE_VERSION(QEDI_MODULE_VERSION);
2517 module_init(qedi_init);
2518 module_exit(qedi_cleanup);
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