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Linux 4.16.11
[linux/fpc-iii.git] / drivers / scsi / qedi / qedi_main.c
blobf57a94b4f0d91636590a5ea1994e2730f8d00512
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 iscsi_eqe_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 iscsi_eqe_data *)fw_handle;
76 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
77 "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n",
78 data->icid, data->conn_id, data->error_code,
79 data->error_pdu_opcode_reserved);
80
81 qedi_ep = qedi->ep_tbl[data->icid];
82
83 if (!qedi_ep) {
84 QEDI_WARN(&qedi->dbg_ctx,
85 "Cannot process event, ep already disconnected, cid=0x%x\n",
86 data->icid);
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_e4 *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_e4), &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
862 err_alloc_mem:
863 return rval;
864 }
865
866 /* Free DMA coherent memory for array of queue pointers we pass to qed */
867 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
868 {
869 size_t size = 0;
870
871 if (qedi->p_cpuq) {
872 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
873 pci_free_consistent(qedi->pdev, size, qedi->p_cpuq,
874 qedi->hw_p_cpuq);
875 }
876
877 qedi_free_global_queues(qedi);
878
879 kfree(qedi->global_queues);
880 }
881
882 static void qedi_link_update(void *dev, struct qed_link_output *link)
883 {
884 struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
885
886 if (link->link_up) {
887 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
888 atomic_set(&qedi->link_state, QEDI_LINK_UP);
889 } else {
890 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
891 "Link Down event.\n");
892 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
893 }
894 }
895
896 static struct qed_iscsi_cb_ops qedi_cb_ops = {
897 {
898 .link_update = qedi_link_update,
899 }
900 };
901
902 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
903 u16 que_idx, struct qedi_percpu_s *p)
904 {
905 struct qedi_work *qedi_work;
906 struct qedi_conn *q_conn;
907 struct iscsi_conn *conn;
908 struct qedi_cmd *qedi_cmd;
909 u32 iscsi_cid;
910 int rc = 0;
911
912 iscsi_cid = cqe->cqe_common.conn_id;
913 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
914 if (!q_conn) {
915 QEDI_WARN(&qedi->dbg_ctx,
916 "Session no longer exists for cid=0x%x!!\n",
917 iscsi_cid);
918 return -1;
919 }
920 conn = q_conn->cls_conn->dd_data;
921
922 switch (cqe->cqe_common.cqe_type) {
923 case ISCSI_CQE_TYPE_SOLICITED:
924 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
925 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
926 if (!qedi_cmd) {
927 rc = -1;
928 break;
929 }
930 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
931 qedi_cmd->cqe_work.qedi = qedi;
932 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
933 qedi_cmd->cqe_work.que_idx = que_idx;
934 qedi_cmd->cqe_work.is_solicited = true;
935 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
936 break;
937 case ISCSI_CQE_TYPE_UNSOLICITED:
938 case ISCSI_CQE_TYPE_DUMMY:
939 case ISCSI_CQE_TYPE_TASK_CLEANUP:
940 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
941 if (!qedi_work) {
942 rc = -1;
943 break;
944 }
945 INIT_LIST_HEAD(&qedi_work->list);
946 qedi_work->qedi = qedi;
947 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
948 qedi_work->que_idx = que_idx;
949 qedi_work->is_solicited = false;
950 list_add_tail(&qedi_work->list, &p->work_list);
951 break;
952 default:
953 rc = -1;
954 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
955 }
956 return rc;
957 }
958
959 static bool qedi_process_completions(struct qedi_fastpath *fp)
960 {
961 struct qedi_ctx *qedi = fp->qedi;
962 struct qed_sb_info *sb_info = fp->sb_info;
963 struct status_block_e4 *sb = sb_info->sb_virt;
964 struct qedi_percpu_s *p = NULL;
965 struct global_queue *que;
966 u16 prod_idx;
967 unsigned long flags;
968 union iscsi_cqe *cqe;
969 int cpu;
970 int ret;
971
972 /* Get the current firmware producer index */
973 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
974
975 if (prod_idx >= QEDI_CQ_SIZE)
976 prod_idx = prod_idx % QEDI_CQ_SIZE;
977
978 que = qedi->global_queues[fp->sb_id];
979 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
980 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
981 que, prod_idx, que->cq_cons_idx, fp->sb_id);
982
983 qedi->intr_cpu = fp->sb_id;
984 cpu = smp_processor_id();
985 p = &per_cpu(qedi_percpu, cpu);
986
987 if (unlikely(!p->iothread))
988 WARN_ON(1);
989
990 spin_lock_irqsave(&p->p_work_lock, flags);
991 while (que->cq_cons_idx != prod_idx) {
992 cqe = &que->cq[que->cq_cons_idx];
993
994 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
995 "cqe=%p prod_idx=%d cons_idx=%d.\n",
996 cqe, prod_idx, que->cq_cons_idx);
997
998 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
999 if (ret)
1000 QEDI_WARN(&qedi->dbg_ctx,
1001 "Dropping CQE 0x%x for cid=0x%x.\n",
1002 que->cq_cons_idx, cqe->cqe_common.conn_id);
1003
1004 que->cq_cons_idx++;
1005 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1006 que->cq_cons_idx = 0;
1007 }
1008 wake_up_process(p->iothread);
1009 spin_unlock_irqrestore(&p->p_work_lock, flags);
1010
1011 return true;
1012 }
1013
1014 static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1015 {
1016 struct qedi_ctx *qedi = fp->qedi;
1017 struct global_queue *que;
1018 struct qed_sb_info *sb_info = fp->sb_info;
1019 struct status_block_e4 *sb = sb_info->sb_virt;
1020 u16 prod_idx;
1021
1022 barrier();
1023
1024 /* Get the current firmware producer index */
1025 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1026
1027 /* Get the pointer to the global CQ this completion is on */
1028 que = qedi->global_queues[fp->sb_id];
1029
1030 /* prod idx wrap around uint16 */
1031 if (prod_idx >= QEDI_CQ_SIZE)
1032 prod_idx = prod_idx % QEDI_CQ_SIZE;
1033
1034 return (que->cq_cons_idx != prod_idx);
1035 }
1036
1037 /* MSI-X fastpath handler code */
1038 static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1039 {
1040 struct qedi_fastpath *fp = dev_id;
1041 struct qedi_ctx *qedi = fp->qedi;
1042 bool wake_io_thread = true;
1043
1044 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1045
1046 process_again:
1047 wake_io_thread = qedi_process_completions(fp);
1048 if (wake_io_thread) {
1049 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1050 "process already running\n");
1051 }
1052
1053 if (qedi_fp_has_work(fp) == 0)
1054 qed_sb_update_sb_idx(fp->sb_info);
1055
1056 /* Check for more work */
1057 rmb();
1058
1059 if (qedi_fp_has_work(fp) == 0)
1060 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1061 else
1062 goto process_again;
1063
1064 return IRQ_HANDLED;
1065 }
1066
1067 /* simd handler for MSI/INTa */
1068 static void qedi_simd_int_handler(void *cookie)
1069 {
1070 /* Cookie is qedi_ctx struct */
1071 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1072
1073 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1074 }
1075
1076 #define QEDI_SIMD_HANDLER_NUM 0
1077 static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1078 {
1079 int i;
1080
1081 if (qedi->int_info.msix_cnt) {
1082 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1083 synchronize_irq(qedi->int_info.msix[i].vector);
1084 irq_set_affinity_hint(qedi->int_info.msix[i].vector,
1085 NULL);
1086 free_irq(qedi->int_info.msix[i].vector,
1087 &qedi->fp_array[i]);
1088 }
1089 } else {
1090 qedi_ops->common->simd_handler_clean(qedi->cdev,
1091 QEDI_SIMD_HANDLER_NUM);
1092 }
1093
1094 qedi->int_info.used_cnt = 0;
1095 qedi_ops->common->set_fp_int(qedi->cdev, 0);
1096 }
1097
1098 static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1099 {
1100 int i, rc, cpu;
1101
1102 cpu = cpumask_first(cpu_online_mask);
1103 for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) {
1104 rc = request_irq(qedi->int_info.msix[i].vector,
1105 qedi_msix_handler, 0, "qedi",
1106 &qedi->fp_array[i]);
1107
1108 if (rc) {
1109 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1110 qedi_sync_free_irqs(qedi);
1111 return rc;
1112 }
1113 qedi->int_info.used_cnt++;
1114 rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector,
1115 get_cpu_mask(cpu));
1116 cpu = cpumask_next(cpu, cpu_online_mask);
1117 }
1118
1119 return 0;
1120 }
1121
1122 static int qedi_setup_int(struct qedi_ctx *qedi)
1123 {
1124 int rc = 0;
1125
1126 rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus());
1127 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1128 if (rc)
1129 goto exit_setup_int;
1130
1131 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1132 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1133 qedi->int_info.msix_cnt, num_online_cpus());
1134
1135 if (qedi->int_info.msix_cnt) {
1136 rc = qedi_request_msix_irq(qedi);
1137 goto exit_setup_int;
1138 } else {
1139 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1140 QEDI_SIMD_HANDLER_NUM,
1141 qedi_simd_int_handler);
1142 qedi->int_info.used_cnt = 1;
1143 }
1144
1145 exit_setup_int:
1146 return rc;
1147 }
1148
1149 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1150 {
1151 if (qedi->iscsi_cfg)
1152 dma_free_coherent(&qedi->pdev->dev,
1153 sizeof(struct nvm_iscsi_cfg),
1154 qedi->iscsi_cfg, qedi->nvm_buf_dma);
1155 }
1156
1157 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1158 {
1159 qedi->iscsi_cfg = dma_zalloc_coherent(&qedi->pdev->dev,
1160 sizeof(struct nvm_iscsi_cfg),
1161 &qedi->nvm_buf_dma, GFP_KERNEL);
1162 if (!qedi->iscsi_cfg) {
1163 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1164 return -ENOMEM;
1165 }
1166 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1167 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_cfg,
1168 qedi->nvm_buf_dma);
1169
1170 return 0;
1171 }
1172
1173 static void qedi_free_bdq(struct qedi_ctx *qedi)
1174 {
1175 int i;
1176
1177 if (qedi->bdq_pbl_list)
1178 dma_free_coherent(&qedi->pdev->dev, PAGE_SIZE,
1179 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1180
1181 if (qedi->bdq_pbl)
1182 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1183 qedi->bdq_pbl, qedi->bdq_pbl_dma);
1184
1185 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1186 if (qedi->bdq[i].buf_addr) {
1187 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1188 qedi->bdq[i].buf_addr,
1189 qedi->bdq[i].buf_dma);
1190 }
1191 }
1192 }
1193
1194 static void qedi_free_global_queues(struct qedi_ctx *qedi)
1195 {
1196 int i;
1197 struct global_queue **gl = qedi->global_queues;
1198
1199 for (i = 0; i < qedi->num_queues; i++) {
1200 if (!gl[i])
1201 continue;
1202
1203 if (gl[i]->cq)
1204 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1205 gl[i]->cq, gl[i]->cq_dma);
1206 if (gl[i]->cq_pbl)
1207 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1208 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1209
1210 kfree(gl[i]);
1211 }
1212 qedi_free_bdq(qedi);
1213 qedi_free_nvm_iscsi_cfg(qedi);
1214 }
1215
1216 static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1217 {
1218 int i;
1219 struct scsi_bd *pbl;
1220 u64 *list;
1221 dma_addr_t page;
1222
1223 /* Alloc dma memory for BDQ buffers */
1224 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1225 qedi->bdq[i].buf_addr =
1226 dma_alloc_coherent(&qedi->pdev->dev,
1227 QEDI_BDQ_BUF_SIZE,
1228 &qedi->bdq[i].buf_dma,
1229 GFP_KERNEL);
1230 if (!qedi->bdq[i].buf_addr) {
1231 QEDI_ERR(&qedi->dbg_ctx,
1232 "Could not allocate BDQ buffer %d.\n", i);
1233 return -ENOMEM;
1234 }
1235 }
1236
1237 /* Alloc dma memory for BDQ page buffer list */
1238 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
1239 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, PAGE_SIZE);
1240 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1241
1242 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1243 qedi->rq_num_entries);
1244
1245 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1246 qedi->bdq_pbl_mem_size,
1247 &qedi->bdq_pbl_dma, GFP_KERNEL);
1248 if (!qedi->bdq_pbl) {
1249 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1250 return -ENOMEM;
1251 }
1252
1253 /*
1254 * Populate BDQ PBL with physical and virtual address of individual
1255 * BDQ buffers
1256 */
1257 pbl = (struct scsi_bd *)qedi->bdq_pbl;
1258 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1259 pbl->address.hi =
1260 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1261 pbl->address.lo =
1262 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1263 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1264 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1265 pbl, pbl->address.hi, pbl->address.lo, i);
1266 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
1267 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
1268 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
1269 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
1270 pbl++;
1271 }
1272
1273 /* Allocate list of PBL pages */
1274 qedi->bdq_pbl_list = dma_zalloc_coherent(&qedi->pdev->dev, PAGE_SIZE,
1275 &qedi->bdq_pbl_list_dma,
1276 GFP_KERNEL);
1277 if (!qedi->bdq_pbl_list) {
1278 QEDI_ERR(&qedi->dbg_ctx,
1279 "Could not allocate list of PBL pages.\n");
1280 return -ENOMEM;
1281 }
1282
1283 /*
1284 * Now populate PBL list with pages that contain pointers to the
1285 * individual buffers.
1286 */
1287 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / PAGE_SIZE;
1288 list = (u64 *)qedi->bdq_pbl_list;
1289 page = qedi->bdq_pbl_list_dma;
1290 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1291 *list = qedi->bdq_pbl_dma;
1292 list++;
1293 page += PAGE_SIZE;
1294 }
1295
1296 return 0;
1297 }
1298
1299 static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1300 {
1301 u32 *list;
1302 int i;
1303 int status = 0, rc;
1304 u32 *pbl;
1305 dma_addr_t page;
1306 int num_pages;
1307
1308 /*
1309 * Number of global queues (CQ / RQ). This should
1310 * be <= number of available MSIX vectors for the PF
1311 */
1312 if (!qedi->num_queues) {
1313 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1314 return 1;
1315 }
1316
1317 /* Make sure we allocated the PBL that will contain the physical
1318 * addresses of our queues
1319 */
1320 if (!qedi->p_cpuq) {
1321 status = 1;
1322 goto mem_alloc_failure;
1323 }
1324
1325 qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1326 qedi->num_queues), GFP_KERNEL);
1327 if (!qedi->global_queues) {
1328 QEDI_ERR(&qedi->dbg_ctx,
1329 "Unable to allocate global queues array ptr memory\n");
1330 return -ENOMEM;
1331 }
1332 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1333 "qedi->global_queues=%p.\n", qedi->global_queues);
1334
1335 /* Allocate DMA coherent buffers for BDQ */
1336 rc = qedi_alloc_bdq(qedi);
1337 if (rc)
1338 goto mem_alloc_failure;
1339
1340 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
1341 rc = qedi_alloc_nvm_iscsi_cfg(qedi);
1342 if (rc)
1343 goto mem_alloc_failure;
1344
1345 /* Allocate a CQ and an associated PBL for each MSI-X
1346 * vector.
1347 */
1348 for (i = 0; i < qedi->num_queues; i++) {
1349 qedi->global_queues[i] =
1350 kzalloc(sizeof(*qedi->global_queues[0]),
1351 GFP_KERNEL);
1352 if (!qedi->global_queues[i]) {
1353 QEDI_ERR(&qedi->dbg_ctx,
1354 "Unable to allocation global queue %d.\n", i);
1355 goto mem_alloc_failure;
1356 }
1357
1358 qedi->global_queues[i]->cq_mem_size =
1359 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1360 qedi->global_queues[i]->cq_mem_size =
1361 (qedi->global_queues[i]->cq_mem_size +
1362 (QEDI_PAGE_SIZE - 1));
1363
1364 qedi->global_queues[i]->cq_pbl_size =
1365 (qedi->global_queues[i]->cq_mem_size /
1366 QEDI_PAGE_SIZE) * sizeof(void *);
1367 qedi->global_queues[i]->cq_pbl_size =
1368 (qedi->global_queues[i]->cq_pbl_size +
1369 (QEDI_PAGE_SIZE - 1));
1370
1371 qedi->global_queues[i]->cq = dma_zalloc_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 qedi->global_queues[i]->cq_pbl = dma_zalloc_coherent(&qedi->pdev->dev,
1383 qedi->global_queues[i]->cq_pbl_size,
1384 &qedi->global_queues[i]->cq_pbl_dma,
1385 GFP_KERNEL);
1386
1387 if (!qedi->global_queues[i]->cq_pbl) {
1388 QEDI_WARN(&qedi->dbg_ctx,
1389 "Could not allocate cq PBL.\n");
1390 status = -ENOMEM;
1391 goto mem_alloc_failure;
1392 }
1393
1394 /* Create PBL */
1395 num_pages = qedi->global_queues[i]->cq_mem_size /
1396 QEDI_PAGE_SIZE;
1397 page = qedi->global_queues[i]->cq_dma;
1398 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1399
1400 while (num_pages--) {
1401 *pbl = (u32)page;
1402 pbl++;
1403 *pbl = (u32)((u64)page >> 32);
1404 pbl++;
1405 page += QEDI_PAGE_SIZE;
1406 }
1407 }
1408
1409 list = (u32 *)qedi->p_cpuq;
1410
1411 /*
1412 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
1413 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
1414 * to the physical address which contains an array of pointers to the
1415 * physical addresses of the specific queue pages.
1416 */
1417 for (i = 0; i < qedi->num_queues; i++) {
1418 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1419 list++;
1420 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1421 list++;
1422
1423 *list = (u32)0;
1424 list++;
1425 *list = (u32)((u64)0 >> 32);
1426 list++;
1427 }
1428
1429 return 0;
1430
1431 mem_alloc_failure:
1432 qedi_free_global_queues(qedi);
1433 return status;
1434 }
1435
1436 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1437 {
1438 int rval = 0;
1439 u32 *pbl;
1440 dma_addr_t page;
1441 int num_pages;
1442
1443 if (!ep)
1444 return -EIO;
1445
1446 /* Calculate appropriate queue and PBL sizes */
1447 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1448 ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1449
1450 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1451 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1452
1453 ep->sq = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1454 &ep->sq_dma, GFP_KERNEL);
1455 if (!ep->sq) {
1456 QEDI_WARN(&qedi->dbg_ctx,
1457 "Could not allocate send queue.\n");
1458 rval = -ENOMEM;
1459 goto out;
1460 }
1461 ep->sq_pbl = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1462 &ep->sq_pbl_dma, GFP_KERNEL);
1463 if (!ep->sq_pbl) {
1464 QEDI_WARN(&qedi->dbg_ctx,
1465 "Could not allocate send queue PBL.\n");
1466 rval = -ENOMEM;
1467 goto out_free_sq;
1468 }
1469
1470 /* Create PBL */
1471 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1472 page = ep->sq_dma;
1473 pbl = (u32 *)ep->sq_pbl;
1474
1475 while (num_pages--) {
1476 *pbl = (u32)page;
1477 pbl++;
1478 *pbl = (u32)((u64)page >> 32);
1479 pbl++;
1480 page += QEDI_PAGE_SIZE;
1481 }
1482
1483 return rval;
1484
1485 out_free_sq:
1486 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1487 ep->sq_dma);
1488 out:
1489 return rval;
1490 }
1491
1492 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1493 {
1494 if (ep->sq_pbl)
1495 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1496 ep->sq_pbl_dma);
1497 if (ep->sq)
1498 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1499 ep->sq_dma);
1500 }
1501
1502 int qedi_get_task_idx(struct qedi_ctx *qedi)
1503 {
1504 s16 tmp_idx;
1505
1506 again:
1507 tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1508 MAX_ISCSI_TASK_ENTRIES);
1509
1510 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1511 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1512 tmp_idx = -1;
1513 goto err_idx;
1514 }
1515
1516 if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1517 goto again;
1518
1519 err_idx:
1520 return tmp_idx;
1521 }
1522
1523 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1524 {
1525 if (!test_and_clear_bit(idx, qedi->task_idx_map))
1526 QEDI_ERR(&qedi->dbg_ctx,
1527 "FW task context, already cleared, tid=0x%x\n", idx);
1528 }
1529
1530 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1531 struct qedi_cmd *cmd)
1532 {
1533 qedi->itt_map[tid].itt = proto_itt;
1534 qedi->itt_map[tid].p_cmd = cmd;
1535
1536 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1537 "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1538 qedi->itt_map[tid].itt);
1539 }
1540
1541 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1542 {
1543 u16 i;
1544
1545 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1546 if (qedi->itt_map[i].itt == itt) {
1547 *tid = i;
1548 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1549 "Ref itt=0x%x, found at tid=0x%x\n",
1550 itt, *tid);
1551 return;
1552 }
1553 }
1554
1555 WARN_ON(1);
1556 }
1557
1558 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1559 {
1560 *proto_itt = qedi->itt_map[tid].itt;
1561 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1562 "Get itt map tid [0x%x with proto itt[0x%x]",
1563 tid, *proto_itt);
1564 }
1565
1566 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1567 {
1568 struct qedi_cmd *cmd = NULL;
1569
1570 if (tid >= MAX_ISCSI_TASK_ENTRIES)
1571 return NULL;
1572
1573 cmd = qedi->itt_map[tid].p_cmd;
1574 if (cmd->task_id != tid)
1575 return NULL;
1576
1577 qedi->itt_map[tid].p_cmd = NULL;
1578
1579 return cmd;
1580 }
1581
1582 static int qedi_alloc_itt(struct qedi_ctx *qedi)
1583 {
1584 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1585 sizeof(struct qedi_itt_map), GFP_KERNEL);
1586 if (!qedi->itt_map) {
1587 QEDI_ERR(&qedi->dbg_ctx,
1588 "Unable to allocate itt map array memory\n");
1589 return -ENOMEM;
1590 }
1591 return 0;
1592 }
1593
1594 static void qedi_free_itt(struct qedi_ctx *qedi)
1595 {
1596 kfree(qedi->itt_map);
1597 }
1598
1599 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1600 .rx_cb = qedi_ll2_rx,
1601 .tx_cb = NULL,
1602 };
1603
1604 static int qedi_percpu_io_thread(void *arg)
1605 {
1606 struct qedi_percpu_s *p = arg;
1607 struct qedi_work *work, *tmp;
1608 unsigned long flags;
1609 LIST_HEAD(work_list);
1610
1611 set_user_nice(current, -20);
1612
1613 while (!kthread_should_stop()) {
1614 spin_lock_irqsave(&p->p_work_lock, flags);
1615 while (!list_empty(&p->work_list)) {
1616 list_splice_init(&p->work_list, &work_list);
1617 spin_unlock_irqrestore(&p->p_work_lock, flags);
1618
1619 list_for_each_entry_safe(work, tmp, &work_list, list) {
1620 list_del_init(&work->list);
1621 qedi_fp_process_cqes(work);
1622 if (!work->is_solicited)
1623 kfree(work);
1624 }
1625 cond_resched();
1626 spin_lock_irqsave(&p->p_work_lock, flags);
1627 }
1628 set_current_state(TASK_INTERRUPTIBLE);
1629 spin_unlock_irqrestore(&p->p_work_lock, flags);
1630 schedule();
1631 }
1632 __set_current_state(TASK_RUNNING);
1633
1634 return 0;
1635 }
1636
1637 static int qedi_cpu_online(unsigned int cpu)
1638 {
1639 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1640 struct task_struct *thread;
1641
1642 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1643 cpu_to_node(cpu),
1644 "qedi_thread/%d", cpu);
1645 if (IS_ERR(thread))
1646 return PTR_ERR(thread);
1647
1648 kthread_bind(thread, cpu);
1649 p->iothread = thread;
1650 wake_up_process(thread);
1651 return 0;
1652 }
1653
1654 static int qedi_cpu_offline(unsigned int cpu)
1655 {
1656 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1657 struct qedi_work *work, *tmp;
1658 struct task_struct *thread;
1659
1660 spin_lock_bh(&p->p_work_lock);
1661 thread = p->iothread;
1662 p->iothread = NULL;
1663
1664 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1665 list_del_init(&work->list);
1666 qedi_fp_process_cqes(work);
1667 if (!work->is_solicited)
1668 kfree(work);
1669 }
1670
1671 spin_unlock_bh(&p->p_work_lock);
1672 if (thread)
1673 kthread_stop(thread);
1674 return 0;
1675 }
1676
1677 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
1678 {
1679 struct qed_ll2_params params;
1680
1681 qedi_recover_all_conns(qedi);
1682
1683 qedi_ops->ll2->stop(qedi->cdev);
1684 qedi_ll2_free_skbs(qedi);
1685
1686 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
1687 qedi->ll2_mtu, mtu);
1688 memset(&params, 0, sizeof(params));
1689 qedi->ll2_mtu = mtu;
1690 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
1691 params.drop_ttl0_packets = 0;
1692 params.rx_vlan_stripping = 1;
1693 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
1694 qedi_ops->ll2->start(qedi->cdev, &params);
1695 }
1696
1697 /**
1698 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
1699 * for gaps) for the matching absolute-pf-id of the QEDI device.
1700 */
1701 static struct nvm_iscsi_block *
1702 qedi_get_nvram_block(struct qedi_ctx *qedi)
1703 {
1704 int i;
1705 u8 pf;
1706 u32 flags;
1707 struct nvm_iscsi_block *block;
1708
1709 pf = qedi->dev_info.common.abs_pf_id;
1710 block = &qedi->iscsi_cfg->block[0];
1711 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
1712 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
1713 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
1714 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
1715 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
1716 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
1717 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
1718 return block;
1719 }
1720 return NULL;
1721 }
1722
1723 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
1724 {
1725 struct qedi_ctx *qedi = data;
1726 struct nvm_iscsi_initiator *initiator;
1727 int rc = 1;
1728 u32 ipv6_en, dhcp_en, ip_len;
1729 struct nvm_iscsi_block *block;
1730 char *fmt, *ip, *sub, *gw;
1731
1732 block = qedi_get_nvram_block(qedi);
1733 if (!block)
1734 return 0;
1735
1736 initiator = &block->initiator;
1737 ipv6_en = block->generic.ctrl_flags &
1738 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
1739 dhcp_en = block->generic.ctrl_flags &
1740 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
1741 /* Static IP assignments. */
1742 fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
1743 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
1744 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
1745 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
1746 initiator->ipv4.subnet_mask.byte;
1747 gw = ipv6_en ? initiator->ipv6.gateway.byte :
1748 initiator->ipv4.gateway.byte;
1749 /* DHCP IP adjustments. */
1750 fmt = dhcp_en ? "%s\n" : fmt;
1751 if (dhcp_en) {
1752 ip = ipv6_en ? "0::0" : "0.0.0.0";
1753 sub = ip;
1754 gw = ip;
1755 ip_len = ipv6_en ? 5 : 8;
1756 }
1757
1758 switch (type) {
1759 case ISCSI_BOOT_ETH_IP_ADDR:
1760 rc = snprintf(buf, ip_len, fmt, ip);
1761 break;
1762 case ISCSI_BOOT_ETH_SUBNET_MASK:
1763 rc = snprintf(buf, ip_len, fmt, sub);
1764 break;
1765 case ISCSI_BOOT_ETH_GATEWAY:
1766 rc = snprintf(buf, ip_len, fmt, gw);
1767 break;
1768 case ISCSI_BOOT_ETH_FLAGS:
1769 rc = snprintf(buf, 3, "%hhd\n",
1770 SYSFS_FLAG_FW_SEL_BOOT);
1771 break;
1772 case ISCSI_BOOT_ETH_INDEX:
1773 rc = snprintf(buf, 3, "0\n");
1774 break;
1775 case ISCSI_BOOT_ETH_MAC:
1776 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
1777 break;
1778 case ISCSI_BOOT_ETH_VLAN:
1779 rc = snprintf(buf, 12, "%d\n",
1780 GET_FIELD2(initiator->generic_cont0,
1781 NVM_ISCSI_CFG_INITIATOR_VLAN));
1782 break;
1783 case ISCSI_BOOT_ETH_ORIGIN:
1784 if (dhcp_en)
1785 rc = snprintf(buf, 3, "3\n");
1786 break;
1787 default:
1788 rc = 0;
1789 break;
1790 }
1791
1792 return rc;
1793 }
1794
1795 static umode_t qedi_eth_get_attr_visibility(void *data, int type)
1796 {
1797 int rc = 1;
1798
1799 switch (type) {
1800 case ISCSI_BOOT_ETH_FLAGS:
1801 case ISCSI_BOOT_ETH_MAC:
1802 case ISCSI_BOOT_ETH_INDEX:
1803 case ISCSI_BOOT_ETH_IP_ADDR:
1804 case ISCSI_BOOT_ETH_SUBNET_MASK:
1805 case ISCSI_BOOT_ETH_GATEWAY:
1806 case ISCSI_BOOT_ETH_ORIGIN:
1807 case ISCSI_BOOT_ETH_VLAN:
1808 rc = 0444;
1809 break;
1810 default:
1811 rc = 0;
1812 break;
1813 }
1814 return rc;
1815 }
1816
1817 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
1818 {
1819 struct qedi_ctx *qedi = data;
1820 struct nvm_iscsi_initiator *initiator;
1821 int rc;
1822 struct nvm_iscsi_block *block;
1823
1824 block = qedi_get_nvram_block(qedi);
1825 if (!block)
1826 return 0;
1827
1828 initiator = &block->initiator;
1829
1830 switch (type) {
1831 case ISCSI_BOOT_INI_INITIATOR_NAME:
1832 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
1833 initiator->initiator_name.byte);
1834 break;
1835 default:
1836 rc = 0;
1837 break;
1838 }
1839 return rc;
1840 }
1841
1842 static umode_t qedi_ini_get_attr_visibility(void *data, int type)
1843 {
1844 int rc;
1845
1846 switch (type) {
1847 case ISCSI_BOOT_INI_INITIATOR_NAME:
1848 rc = 0444;
1849 break;
1850 default:
1851 rc = 0;
1852 break;
1853 }
1854 return rc;
1855 }
1856
1857 static ssize_t
1858 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
1859 char *buf, enum qedi_nvm_tgts idx)
1860 {
1861 int rc = 1;
1862 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
1863 struct nvm_iscsi_block *block;
1864 char *chap_name, *chap_secret;
1865 char *mchap_name, *mchap_secret;
1866
1867 block = qedi_get_nvram_block(qedi);
1868 if (!block)
1869 goto exit_show_tgt_info;
1870
1871 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
1872 "Port:%d, tgt_idx:%d\n",
1873 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
1874
1875 ctrl_flags = block->target[idx].ctrl_flags &
1876 NVM_ISCSI_CFG_TARGET_ENABLED;
1877
1878 if (!ctrl_flags) {
1879 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
1880 "Target disabled\n");
1881 goto exit_show_tgt_info;
1882 }
1883
1884 ipv6_en = block->generic.ctrl_flags &
1885 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
1886 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
1887 chap_en = block->generic.ctrl_flags &
1888 NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
1889 chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
1890 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
1891
1892 mchap_en = block->generic.ctrl_flags &
1893 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
1894 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
1895 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
1896
1897 switch (type) {
1898 case ISCSI_BOOT_TGT_NAME:
1899 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
1900 block->target[idx].target_name.byte);
1901 break;
1902 case ISCSI_BOOT_TGT_IP_ADDR:
1903 if (ipv6_en)
1904 rc = snprintf(buf, ip_len, "%pI6\n",
1905 block->target[idx].ipv6_addr.byte);
1906 else
1907 rc = snprintf(buf, ip_len, "%pI4\n",
1908 block->target[idx].ipv4_addr.byte);
1909 break;
1910 case ISCSI_BOOT_TGT_PORT:
1911 rc = snprintf(buf, 12, "%d\n",
1912 GET_FIELD2(block->target[idx].generic_cont0,
1913 NVM_ISCSI_CFG_TARGET_TCP_PORT));
1914 break;
1915 case ISCSI_BOOT_TGT_LUN:
1916 rc = snprintf(buf, 22, "%.*d\n",
1917 block->target[idx].lun.value[1],
1918 block->target[idx].lun.value[0]);
1919 break;
1920 case ISCSI_BOOT_TGT_CHAP_NAME:
1921 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1922 chap_name);
1923 break;
1924 case ISCSI_BOOT_TGT_CHAP_SECRET:
1925 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1926 chap_secret);
1927 break;
1928 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
1929 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1930 mchap_name);
1931 break;
1932 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
1933 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1934 mchap_secret);
1935 break;
1936 case ISCSI_BOOT_TGT_FLAGS:
1937 rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
1938 break;
1939 case ISCSI_BOOT_TGT_NIC_ASSOC:
1940 rc = snprintf(buf, 3, "0\n");
1941 break;
1942 default:
1943 rc = 0;
1944 break;
1945 }
1946
1947 exit_show_tgt_info:
1948 return rc;
1949 }
1950
1951 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
1952 {
1953 struct qedi_ctx *qedi = data;
1954
1955 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
1956 }
1957
1958 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
1959 {
1960 struct qedi_ctx *qedi = data;
1961
1962 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
1963 }
1964
1965 static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
1966 {
1967 int rc;
1968
1969 switch (type) {
1970 case ISCSI_BOOT_TGT_NAME:
1971 case ISCSI_BOOT_TGT_IP_ADDR:
1972 case ISCSI_BOOT_TGT_PORT:
1973 case ISCSI_BOOT_TGT_LUN:
1974 case ISCSI_BOOT_TGT_CHAP_NAME:
1975 case ISCSI_BOOT_TGT_CHAP_SECRET:
1976 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
1977 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
1978 case ISCSI_BOOT_TGT_NIC_ASSOC:
1979 case ISCSI_BOOT_TGT_FLAGS:
1980 rc = 0444;
1981 break;
1982 default:
1983 rc = 0;
1984 break;
1985 }
1986 return rc;
1987 }
1988
1989 static void qedi_boot_release(void *data)
1990 {
1991 struct qedi_ctx *qedi = data;
1992
1993 scsi_host_put(qedi->shost);
1994 }
1995
1996 static int qedi_get_boot_info(struct qedi_ctx *qedi)
1997 {
1998 int ret = 1;
1999 u16 len;
2000
2001 len = sizeof(struct nvm_iscsi_cfg);
2002
2003 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2004 "Get NVM iSCSI CFG image\n");
2005 ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2006 QED_NVM_IMAGE_ISCSI_CFG,
2007 (char *)qedi->iscsi_cfg, len);
2008 if (ret)
2009 QEDI_ERR(&qedi->dbg_ctx,
2010 "Could not get NVM image. ret = %d\n", ret);
2011
2012 return ret;
2013 }
2014
2015 static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2016 {
2017 struct iscsi_boot_kobj *boot_kobj;
2018
2019 if (qedi_get_boot_info(qedi))
2020 return -EPERM;
2021
2022 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2023 if (!qedi->boot_kset)
2024 goto kset_free;
2025
2026 if (!scsi_host_get(qedi->shost))
2027 goto kset_free;
2028
2029 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2030 qedi_show_boot_tgt_pri_info,
2031 qedi_tgt_get_attr_visibility,
2032 qedi_boot_release);
2033 if (!boot_kobj)
2034 goto put_host;
2035
2036 if (!scsi_host_get(qedi->shost))
2037 goto kset_free;
2038
2039 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2040 qedi_show_boot_tgt_sec_info,
2041 qedi_tgt_get_attr_visibility,
2042 qedi_boot_release);
2043 if (!boot_kobj)
2044 goto put_host;
2045
2046 if (!scsi_host_get(qedi->shost))
2047 goto kset_free;
2048
2049 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2050 qedi_show_boot_ini_info,
2051 qedi_ini_get_attr_visibility,
2052 qedi_boot_release);
2053 if (!boot_kobj)
2054 goto put_host;
2055
2056 if (!scsi_host_get(qedi->shost))
2057 goto kset_free;
2058
2059 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2060 qedi_show_boot_eth_info,
2061 qedi_eth_get_attr_visibility,
2062 qedi_boot_release);
2063 if (!boot_kobj)
2064 goto put_host;
2065
2066 return 0;
2067
2068 put_host:
2069 scsi_host_put(qedi->shost);
2070 kset_free:
2071 iscsi_boot_destroy_kset(qedi->boot_kset);
2072 return -ENOMEM;
2073 }
2074
2075 static void __qedi_remove(struct pci_dev *pdev, int mode)
2076 {
2077 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2078
2079 if (qedi->tmf_thread) {
2080 flush_workqueue(qedi->tmf_thread);
2081 destroy_workqueue(qedi->tmf_thread);
2082 qedi->tmf_thread = NULL;
2083 }
2084
2085 if (qedi->offload_thread) {
2086 flush_workqueue(qedi->offload_thread);
2087 destroy_workqueue(qedi->offload_thread);
2088 qedi->offload_thread = NULL;
2089 }
2090
2091 #ifdef CONFIG_DEBUG_FS
2092 qedi_dbg_host_exit(&qedi->dbg_ctx);
2093 #endif
2094 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2095 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2096
2097 qedi_sync_free_irqs(qedi);
2098
2099 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2100 qedi_ops->stop(qedi->cdev);
2101 qedi_ops->ll2->stop(qedi->cdev);
2102 }
2103
2104 if (mode == QEDI_MODE_NORMAL)
2105 qedi_free_iscsi_pf_param(qedi);
2106
2107 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2108 qedi_ops->common->slowpath_stop(qedi->cdev);
2109 qedi_ops->common->remove(qedi->cdev);
2110 }
2111
2112 qedi_destroy_fp(qedi);
2113
2114 if (mode == QEDI_MODE_NORMAL) {
2115 qedi_release_cid_que(qedi);
2116 qedi_cm_free_mem(qedi);
2117 qedi_free_uio(qedi->udev);
2118 qedi_free_itt(qedi);
2119
2120 iscsi_host_remove(qedi->shost);
2121 iscsi_host_free(qedi->shost);
2122
2123 if (qedi->ll2_recv_thread) {
2124 kthread_stop(qedi->ll2_recv_thread);
2125 qedi->ll2_recv_thread = NULL;
2126 }
2127 qedi_ll2_free_skbs(qedi);
2128
2129 if (qedi->boot_kset)
2130 iscsi_boot_destroy_kset(qedi->boot_kset);
2131 }
2132 }
2133
2134 static int __qedi_probe(struct pci_dev *pdev, int mode)
2135 {
2136 struct qedi_ctx *qedi;
2137 struct qed_ll2_params params;
2138 u32 dp_module = 0;
2139 u8 dp_level = 0;
2140 bool is_vf = false;
2141 char host_buf[16];
2142 struct qed_link_params link_params;
2143 struct qed_slowpath_params sp_params;
2144 struct qed_probe_params qed_params;
2145 void *task_start, *task_end;
2146 int rc;
2147 u16 tmp;
2148
2149 if (mode != QEDI_MODE_RECOVERY) {
2150 qedi = qedi_host_alloc(pdev);
2151 if (!qedi) {
2152 rc = -ENOMEM;
2153 goto exit_probe;
2154 }
2155 } else {
2156 qedi = pci_get_drvdata(pdev);
2157 }
2158
2159 memset(&qed_params, 0, sizeof(qed_params));
2160 qed_params.protocol = QED_PROTOCOL_ISCSI;
2161 qed_params.dp_module = dp_module;
2162 qed_params.dp_level = dp_level;
2163 qed_params.is_vf = is_vf;
2164 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2165 if (!qedi->cdev) {
2166 rc = -ENODEV;
2167 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2168 goto free_host;
2169 }
2170
2171 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2172
2173 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2174 if (rc)
2175 goto free_host;
2176
2177 if (mode != QEDI_MODE_RECOVERY) {
2178 rc = qedi_set_iscsi_pf_param(qedi);
2179 if (rc) {
2180 rc = -ENOMEM;
2181 QEDI_ERR(&qedi->dbg_ctx,
2182 "Set iSCSI pf param fail\n");
2183 goto free_host;
2184 }
2185 }
2186
2187 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2188
2189 rc = qedi_prepare_fp(qedi);
2190 if (rc) {
2191 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2192 goto free_pf_params;
2193 }
2194
2195 /* Start the Slowpath-process */
2196 memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2197 sp_params.int_mode = QED_INT_MODE_MSIX;
2198 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2199 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2200 sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2201 sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2202 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2203 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2204 if (rc) {
2205 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2206 goto stop_hw;
2207 }
2208
2209 /* update_pf_params needs to be called before and after slowpath
2210 * start
2211 */
2212 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2213
2214 rc = qedi_setup_int(qedi);
2215 if (rc)
2216 goto stop_iscsi_func;
2217
2218 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2219
2220 /* Learn information crucial for qedi to progress */
2221 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2222 if (rc)
2223 goto stop_iscsi_func;
2224
2225 /* Record BDQ producer doorbell addresses */
2226 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2227 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2228 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2229 "BDQ primary_prod=%p secondary_prod=%p.\n",
2230 qedi->bdq_primary_prod,
2231 qedi->bdq_secondary_prod);
2232
2233 /*
2234 * We need to write the number of BDs in the BDQ we've preallocated so
2235 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
2236 * packet arrives.
2237 */
2238 qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2239 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2240 "Writing %d to primary and secondary BDQ doorbell registers.\n",
2241 qedi->bdq_prod_idx);
2242 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2243 tmp = readw(qedi->bdq_primary_prod);
2244 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2245 tmp = readw(qedi->bdq_secondary_prod);
2246
2247 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2248 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2249 qedi->mac);
2250
2251 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2252 qedi_ops->common->set_name(qedi->cdev, host_buf);
2253
2254 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2255
2256 memset(&params, 0, sizeof(params));
2257 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2258 qedi->ll2_mtu = DEF_PATH_MTU;
2259 params.drop_ttl0_packets = 0;
2260 params.rx_vlan_stripping = 1;
2261 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2262
2263 if (mode != QEDI_MODE_RECOVERY) {
2264 /* set up rx path */
2265 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2266 spin_lock_init(&qedi->ll2_lock);
2267 /* start qedi context */
2268 spin_lock_init(&qedi->hba_lock);
2269 spin_lock_init(&qedi->task_idx_lock);
2270 }
2271 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2272 qedi_ops->ll2->start(qedi->cdev, &params);
2273
2274 if (mode != QEDI_MODE_RECOVERY) {
2275 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2276 (void *)qedi,
2277 "qedi_ll2_thread");
2278 }
2279
2280 rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2281 qedi, qedi_iscsi_event_cb);
2282 if (rc) {
2283 rc = -ENODEV;
2284 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2285 goto stop_slowpath;
2286 }
2287
2288 task_start = qedi_get_task_mem(&qedi->tasks, 0);
2289 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2290 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2291 "Task context start=%p, end=%p block_size=%u.\n",
2292 task_start, task_end, qedi->tasks.size);
2293
2294 memset(&link_params, 0, sizeof(link_params));
2295 link_params.link_up = true;
2296 rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2297 if (rc) {
2298 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2299 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2300 }
2301
2302 #ifdef CONFIG_DEBUG_FS
2303 qedi_dbg_host_init(&qedi->dbg_ctx, &qedi_debugfs_ops,
2304 &qedi_dbg_fops);
2305 #endif
2306 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2307 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2308 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2309 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2310
2311 if (mode == QEDI_MODE_NORMAL) {
2312 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2313 QEDI_ERR(&qedi->dbg_ctx,
2314 "Could not add iscsi host\n");
2315 rc = -ENOMEM;
2316 goto remove_host;
2317 }
2318
2319 /* Allocate uio buffers */
2320 rc = qedi_alloc_uio_rings(qedi);
2321 if (rc) {
2322 QEDI_ERR(&qedi->dbg_ctx,
2323 "UIO alloc ring failed err=%d\n", rc);
2324 goto remove_host;
2325 }
2326
2327 rc = qedi_init_uio(qedi);
2328 if (rc) {
2329 QEDI_ERR(&qedi->dbg_ctx,
2330 "UIO init failed, err=%d\n", rc);
2331 goto free_uio;
2332 }
2333
2334 /* host the array on iscsi_conn */
2335 rc = qedi_setup_cid_que(qedi);
2336 if (rc) {
2337 QEDI_ERR(&qedi->dbg_ctx,
2338 "Could not setup cid que\n");
2339 goto free_uio;
2340 }
2341
2342 rc = qedi_cm_alloc_mem(qedi);
2343 if (rc) {
2344 QEDI_ERR(&qedi->dbg_ctx,
2345 "Could not alloc cm memory\n");
2346 goto free_cid_que;
2347 }
2348
2349 rc = qedi_alloc_itt(qedi);
2350 if (rc) {
2351 QEDI_ERR(&qedi->dbg_ctx,
2352 "Could not alloc itt memory\n");
2353 goto free_cid_que;
2354 }
2355
2356 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2357 qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2358 if (!qedi->tmf_thread) {
2359 QEDI_ERR(&qedi->dbg_ctx,
2360 "Unable to start tmf thread!\n");
2361 rc = -ENODEV;
2362 goto free_cid_que;
2363 }
2364
2365 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2366 qedi->offload_thread = create_workqueue(host_buf);
2367 if (!qedi->offload_thread) {
2368 QEDI_ERR(&qedi->dbg_ctx,
2369 "Unable to start offload thread!\n");
2370 rc = -ENODEV;
2371 goto free_cid_que;
2372 }
2373
2374 /* F/w needs 1st task context memory entry for performance */
2375 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2376 atomic_set(&qedi->num_offloads, 0);
2377
2378 if (qedi_setup_boot_info(qedi))
2379 QEDI_ERR(&qedi->dbg_ctx,
2380 "No iSCSI boot target configured\n");
2381 }
2382
2383 return 0;
2384
2385 free_cid_que:
2386 qedi_release_cid_que(qedi);
2387 free_uio:
2388 qedi_free_uio(qedi->udev);
2389 remove_host:
2390 #ifdef CONFIG_DEBUG_FS
2391 qedi_dbg_host_exit(&qedi->dbg_ctx);
2392 #endif
2393 iscsi_host_remove(qedi->shost);
2394 stop_iscsi_func:
2395 qedi_ops->stop(qedi->cdev);
2396 stop_slowpath:
2397 qedi_ops->common->slowpath_stop(qedi->cdev);
2398 stop_hw:
2399 qedi_ops->common->remove(qedi->cdev);
2400 free_pf_params:
2401 qedi_free_iscsi_pf_param(qedi);
2402 free_host:
2403 iscsi_host_free(qedi->shost);
2404 exit_probe:
2405 return rc;
2406 }
2407
2408 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2409 {
2410 return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2411 }
2412
2413 static void qedi_remove(struct pci_dev *pdev)
2414 {
2415 __qedi_remove(pdev, QEDI_MODE_NORMAL);
2416 }
2417
2418 static struct pci_device_id qedi_pci_tbl[] = {
2419 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2420 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2421 { 0 },
2422 };
2423 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2424
2425 static enum cpuhp_state qedi_cpuhp_state;
2426
2427 static struct pci_driver qedi_pci_driver = {
2428 .name = QEDI_MODULE_NAME,
2429 .id_table = qedi_pci_tbl,
2430 .probe = qedi_probe,
2431 .remove = qedi_remove,
2432 };
2433
2434 static int __init qedi_init(void)
2435 {
2436 struct qedi_percpu_s *p;
2437 int cpu, rc = 0;
2438
2439 qedi_ops = qed_get_iscsi_ops();
2440 if (!qedi_ops) {
2441 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2442 return -EINVAL;
2443 }
2444
2445 #ifdef CONFIG_DEBUG_FS
2446 qedi_dbg_init("qedi");
2447 #endif
2448
2449 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2450 if (!qedi_scsi_transport) {
2451 QEDI_ERR(NULL, "Could not register qedi transport");
2452 rc = -ENOMEM;
2453 goto exit_qedi_init_1;
2454 }
2455
2456 for_each_possible_cpu(cpu) {
2457 p = &per_cpu(qedi_percpu, cpu);
2458 INIT_LIST_HEAD(&p->work_list);
2459 spin_lock_init(&p->p_work_lock);
2460 p->iothread = NULL;
2461 }
2462
2463 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2464 qedi_cpu_online, qedi_cpu_offline);
2465 if (rc < 0)
2466 goto exit_qedi_init_2;
2467 qedi_cpuhp_state = rc;
2468
2469 rc = pci_register_driver(&qedi_pci_driver);
2470 if (rc) {
2471 QEDI_ERR(NULL, "Failed to register driver\n");
2472 goto exit_qedi_hp;
2473 }
2474
2475 return 0;
2476
2477 exit_qedi_hp:
2478 cpuhp_remove_state(qedi_cpuhp_state);
2479 exit_qedi_init_2:
2480 iscsi_unregister_transport(&qedi_iscsi_transport);
2481 exit_qedi_init_1:
2482 #ifdef CONFIG_DEBUG_FS
2483 qedi_dbg_exit();
2484 #endif
2485 qed_put_iscsi_ops();
2486 return rc;
2487 }
2488
2489 static void __exit qedi_cleanup(void)
2490 {
2491 pci_unregister_driver(&qedi_pci_driver);
2492 cpuhp_remove_state(qedi_cpuhp_state);
2493 iscsi_unregister_transport(&qedi_iscsi_transport);
2494
2495 #ifdef CONFIG_DEBUG_FS
2496 qedi_dbg_exit();
2497 #endif
2498 qed_put_iscsi_ops();
2499 }
2500
2501 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2502 MODULE_LICENSE("GPL");
2503 MODULE_AUTHOR("QLogic Corporation");
2504 MODULE_VERSION(QEDI_MODULE_VERSION);
2505 module_init(qedi_init);
2506 module_exit(qedi_cleanup);
Linux with added FPC-III support