?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / scsi / qedi / qedi_main.c
blobacb930b8c6a64fdcb8ce6c48eb5d979904a2096d
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * QLogic iSCSI Offload Driver
4 * Copyright (c) 2016 Cavium Inc.
5 */
6
7 #include <linux/module.h>
8 #include <linux/pci.h>
9 #include <linux/kernel.h>
10 #include <linux/if_arp.h>
11 #include <scsi/iscsi_if.h>
12 #include <linux/inet.h>
13 #include <net/arp.h>
14 #include <linux/list.h>
15 #include <linux/kthread.h>
16 #include <linux/mm.h>
17 #include <linux/if_vlan.h>
18 #include <linux/cpu.h>
19 #include <linux/iscsi_boot_sysfs.h>
20
21 #include <scsi/scsi_cmnd.h>
22 #include <scsi/scsi_device.h>
23 #include <scsi/scsi_eh.h>
24 #include <scsi/scsi_host.h>
25 #include <scsi/scsi.h>
26
27 #include "qedi.h"
28 #include "qedi_gbl.h"
29 #include "qedi_iscsi.h"
30
31 static uint qedi_fw_debug;
32 module_param(qedi_fw_debug, uint, 0644);
33 MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
34
35 uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
36 module_param(qedi_dbg_log, uint, 0644);
37 MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
38
39 uint qedi_io_tracing;
40 module_param(qedi_io_tracing, uint, 0644);
41 MODULE_PARM_DESC(qedi_io_tracing,
42 " Enable logging of SCSI requests/completions into trace buffer. (default off).");
43
44 uint qedi_ll2_buf_size = 0x400;
45 module_param(qedi_ll2_buf_size, uint, 0644);
46 MODULE_PARM_DESC(qedi_ll2_buf_size,
47 "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400.");
48
49 const struct qed_iscsi_ops *qedi_ops;
50 static struct scsi_transport_template *qedi_scsi_transport;
51 static struct pci_driver qedi_pci_driver;
52 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
53 static LIST_HEAD(qedi_udev_list);
54 /* Static function declaration */
55 static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
56 static void qedi_free_global_queues(struct qedi_ctx *qedi);
57 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
58 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
59 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
60 static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi);
61
62 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
63 {
64 struct qedi_ctx *qedi;
65 struct qedi_endpoint *qedi_ep;
66 struct iscsi_eqe_data *data;
67 int rval = 0;
68
69 if (!context || !fw_handle) {
70 QEDI_ERR(NULL, "Recv event with ctx NULL\n");
71 return -EINVAL;
72 }
73
74 qedi = (struct qedi_ctx *)context;
75 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
76 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
77
78 data = (struct iscsi_eqe_data *)fw_handle;
79 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
80 "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n",
81 data->icid, data->conn_id, data->error_code,
82 data->error_pdu_opcode_reserved);
83
84 qedi_ep = qedi->ep_tbl[data->icid];
85
86 if (!qedi_ep) {
87 QEDI_WARN(&qedi->dbg_ctx,
88 "Cannot process event, ep already disconnected, cid=0x%x\n",
89 data->icid);
90 WARN_ON(1);
91 return -ENODEV;
92 }
93
94 switch (fw_event_code) {
95 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
96 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
97 qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
98
99 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
100 break;
101 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
102 qedi_ep->state = EP_STATE_DISCONN_COMPL;
103 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
104 break;
105 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
106 qedi_process_iscsi_error(qedi_ep, data);
107 break;
108 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
109 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
110 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
111 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
112 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
113 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
114 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
115 qedi_process_tcp_error(qedi_ep, data);
116 break;
117 default:
118 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
119 fw_event_code);
120 }
121
122 return rval;
123 }
124
125 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
126 {
127 struct qedi_uio_dev *udev = uinfo->priv;
128 struct qedi_ctx *qedi = udev->qedi;
129
130 if (!capable(CAP_NET_ADMIN))
131 return -EPERM;
132
133 if (udev->uio_dev != -1)
134 return -EBUSY;
135
136 rtnl_lock();
137 udev->uio_dev = iminor(inode);
138 qedi_reset_uio_rings(udev);
139 set_bit(UIO_DEV_OPENED, &qedi->flags);
140 rtnl_unlock();
141
142 return 0;
143 }
144
145 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
146 {
147 struct qedi_uio_dev *udev = uinfo->priv;
148 struct qedi_ctx *qedi = udev->qedi;
149
150 udev->uio_dev = -1;
151 clear_bit(UIO_DEV_OPENED, &qedi->flags);
152 qedi_ll2_free_skbs(qedi);
153 return 0;
154 }
155
156 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
157 {
158 if (udev->uctrl) {
159 free_page((unsigned long)udev->uctrl);
160 udev->uctrl = NULL;
161 }
162
163 if (udev->ll2_ring) {
164 free_page((unsigned long)udev->ll2_ring);
165 udev->ll2_ring = NULL;
166 }
167
168 if (udev->ll2_buf) {
169 free_pages((unsigned long)udev->ll2_buf, 2);
170 udev->ll2_buf = NULL;
171 }
172 }
173
174 static void __qedi_free_uio(struct qedi_uio_dev *udev)
175 {
176 uio_unregister_device(&udev->qedi_uinfo);
177
178 __qedi_free_uio_rings(udev);
179
180 pci_dev_put(udev->pdev);
181 kfree(udev);
182 }
183
184 static void qedi_free_uio(struct qedi_uio_dev *udev)
185 {
186 if (!udev)
187 return;
188
189 list_del_init(&udev->list);
190 __qedi_free_uio(udev);
191 }
192
193 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
194 {
195 struct qedi_ctx *qedi = NULL;
196 struct qedi_uio_ctrl *uctrl = NULL;
197
198 qedi = udev->qedi;
199 uctrl = udev->uctrl;
200
201 spin_lock_bh(&qedi->ll2_lock);
202 uctrl->host_rx_cons = 0;
203 uctrl->hw_rx_prod = 0;
204 uctrl->hw_rx_bd_prod = 0;
205 uctrl->host_rx_bd_cons = 0;
206
207 memset(udev->ll2_ring, 0, udev->ll2_ring_size);
208 memset(udev->ll2_buf, 0, udev->ll2_buf_size);
209 spin_unlock_bh(&qedi->ll2_lock);
210 }
211
212 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
213 {
214 int rc = 0;
215
216 if (udev->ll2_ring || udev->ll2_buf)
217 return rc;
218
219 /* Memory for control area. */
220 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
221 if (!udev->uctrl)
222 return -ENOMEM;
223
224 /* Allocating memory for LL2 ring */
225 udev->ll2_ring_size = QEDI_PAGE_SIZE;
226 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
227 if (!udev->ll2_ring) {
228 rc = -ENOMEM;
229 goto exit_alloc_ring;
230 }
231
232 /* Allocating memory for Tx/Rx pkt buffer */
233 udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size;
234 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
235 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
236 __GFP_ZERO, 2);
237 if (!udev->ll2_buf) {
238 rc = -ENOMEM;
239 goto exit_alloc_buf;
240 }
241 return rc;
242
243 exit_alloc_buf:
244 free_page((unsigned long)udev->ll2_ring);
245 udev->ll2_ring = NULL;
246 exit_alloc_ring:
247 return rc;
248 }
249
250 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
251 {
252 struct qedi_uio_dev *udev = NULL;
253 int rc = 0;
254
255 list_for_each_entry(udev, &qedi_udev_list, list) {
256 if (udev->pdev == qedi->pdev) {
257 udev->qedi = qedi;
258 if (__qedi_alloc_uio_rings(udev)) {
259 udev->qedi = NULL;
260 return -ENOMEM;
261 }
262 qedi->udev = udev;
263 return 0;
264 }
265 }
266
267 udev = kzalloc(sizeof(*udev), GFP_KERNEL);
268 if (!udev) {
269 rc = -ENOMEM;
270 goto err_udev;
271 }
272
273 udev->uio_dev = -1;
274
275 udev->qedi = qedi;
276 udev->pdev = qedi->pdev;
277
278 rc = __qedi_alloc_uio_rings(udev);
279 if (rc)
280 goto err_uctrl;
281
282 list_add(&udev->list, &qedi_udev_list);
283
284 pci_dev_get(udev->pdev);
285 qedi->udev = udev;
286
287 udev->tx_pkt = udev->ll2_buf;
288 udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size;
289 return 0;
290
291 err_uctrl:
292 kfree(udev);
293 err_udev:
294 return -ENOMEM;
295 }
296
297 static int qedi_init_uio(struct qedi_ctx *qedi)
298 {
299 struct qedi_uio_dev *udev = qedi->udev;
300 struct uio_info *uinfo;
301 int ret = 0;
302
303 if (!udev)
304 return -ENOMEM;
305
306 uinfo = &udev->qedi_uinfo;
307
308 uinfo->mem[0].addr = (unsigned long)udev->uctrl;
309 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
310 uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
311
312 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
313 uinfo->mem[1].size = udev->ll2_ring_size;
314 uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
315
316 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
317 uinfo->mem[2].size = udev->ll2_buf_size;
318 uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
319
320 uinfo->name = "qedi_uio";
321 uinfo->version = QEDI_MODULE_VERSION;
322 uinfo->irq = UIO_IRQ_CUSTOM;
323
324 uinfo->open = qedi_uio_open;
325 uinfo->release = qedi_uio_close;
326
327 if (udev->uio_dev == -1) {
328 if (!uinfo->priv) {
329 uinfo->priv = udev;
330
331 ret = uio_register_device(&udev->pdev->dev, uinfo);
332 if (ret) {
333 QEDI_ERR(&qedi->dbg_ctx,
334 "UIO registration failed\n");
335 }
336 }
337 }
338
339 return ret;
340 }
341
342 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
343 struct qed_sb_info *sb_info, u16 sb_id)
344 {
345 struct status_block_e4 *sb_virt;
346 dma_addr_t sb_phys;
347 int ret;
348
349 sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
350 sizeof(struct status_block_e4), &sb_phys,
351 GFP_KERNEL);
352 if (!sb_virt) {
353 QEDI_ERR(&qedi->dbg_ctx,
354 "Status block allocation failed for id = %d.\n",
355 sb_id);
356 return -ENOMEM;
357 }
358
359 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
360 sb_id, QED_SB_TYPE_STORAGE);
361 if (ret) {
362 QEDI_ERR(&qedi->dbg_ctx,
363 "Status block initialization failed for id = %d.\n",
364 sb_id);
365 return ret;
366 }
367
368 return 0;
369 }
370
371 static void qedi_free_sb(struct qedi_ctx *qedi)
372 {
373 struct qed_sb_info *sb_info;
374 int id;
375
376 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
377 sb_info = &qedi->sb_array[id];
378 if (sb_info->sb_virt)
379 dma_free_coherent(&qedi->pdev->dev,
380 sizeof(*sb_info->sb_virt),
381 (void *)sb_info->sb_virt,
382 sb_info->sb_phys);
383 }
384 }
385
386 static void qedi_free_fp(struct qedi_ctx *qedi)
387 {
388 kfree(qedi->fp_array);
389 kfree(qedi->sb_array);
390 }
391
392 static void qedi_destroy_fp(struct qedi_ctx *qedi)
393 {
394 qedi_free_sb(qedi);
395 qedi_free_fp(qedi);
396 }
397
398 static int qedi_alloc_fp(struct qedi_ctx *qedi)
399 {
400 int ret = 0;
401
402 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
403 sizeof(struct qedi_fastpath), GFP_KERNEL);
404 if (!qedi->fp_array) {
405 QEDI_ERR(&qedi->dbg_ctx,
406 "fastpath fp array allocation failed.\n");
407 return -ENOMEM;
408 }
409
410 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
411 sizeof(struct qed_sb_info), GFP_KERNEL);
412 if (!qedi->sb_array) {
413 QEDI_ERR(&qedi->dbg_ctx,
414 "fastpath sb array allocation failed.\n");
415 ret = -ENOMEM;
416 goto free_fp;
417 }
418
419 return ret;
420
421 free_fp:
422 qedi_free_fp(qedi);
423 return ret;
424 }
425
426 static void qedi_int_fp(struct qedi_ctx *qedi)
427 {
428 struct qedi_fastpath *fp;
429 int id;
430
431 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
432 sizeof(*qedi->fp_array));
433 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
434 sizeof(*qedi->sb_array));
435
436 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
437 fp = &qedi->fp_array[id];
438 fp->sb_info = &qedi->sb_array[id];
439 fp->sb_id = id;
440 fp->qedi = qedi;
441 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
442 "qedi", id);
443
444 /* fp_array[i] ---- irq cookie
445 * So init data which is needed in int ctx
446 */
447 }
448 }
449
450 static int qedi_prepare_fp(struct qedi_ctx *qedi)
451 {
452 struct qedi_fastpath *fp;
453 int id, ret = 0;
454
455 ret = qedi_alloc_fp(qedi);
456 if (ret)
457 goto err;
458
459 qedi_int_fp(qedi);
460
461 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
462 fp = &qedi->fp_array[id];
463 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
464 if (ret) {
465 QEDI_ERR(&qedi->dbg_ctx,
466 "SB allocation and initialization failed.\n");
467 ret = -EIO;
468 goto err_init;
469 }
470 }
471
472 return 0;
473
474 err_init:
475 qedi_free_sb(qedi);
476 qedi_free_fp(qedi);
477 err:
478 return ret;
479 }
480
481 static int qedi_setup_cid_que(struct qedi_ctx *qedi)
482 {
483 int i;
484
485 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
486 sizeof(u32), GFP_KERNEL);
487 if (!qedi->cid_que.cid_que_base)
488 return -ENOMEM;
489
490 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
491 sizeof(struct qedi_conn *),
492 GFP_KERNEL);
493 if (!qedi->cid_que.conn_cid_tbl) {
494 kfree(qedi->cid_que.cid_que_base);
495 qedi->cid_que.cid_que_base = NULL;
496 return -ENOMEM;
497 }
498
499 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
500 qedi->cid_que.cid_q_prod_idx = 0;
501 qedi->cid_que.cid_q_cons_idx = 0;
502 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
503 qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
504
505 for (i = 0; i < qedi->max_active_conns; i++) {
506 qedi->cid_que.cid_que[i] = i;
507 qedi->cid_que.conn_cid_tbl[i] = NULL;
508 }
509
510 return 0;
511 }
512
513 static void qedi_release_cid_que(struct qedi_ctx *qedi)
514 {
515 kfree(qedi->cid_que.cid_que_base);
516 qedi->cid_que.cid_que_base = NULL;
517
518 kfree(qedi->cid_que.conn_cid_tbl);
519 qedi->cid_que.conn_cid_tbl = NULL;
520 }
521
522 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
523 u16 start_id, u16 next)
524 {
525 id_tbl->start = start_id;
526 id_tbl->max = size;
527 id_tbl->next = next;
528 spin_lock_init(&id_tbl->lock);
529 id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
530 if (!id_tbl->table)
531 return -ENOMEM;
532
533 return 0;
534 }
535
536 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
537 {
538 kfree(id_tbl->table);
539 id_tbl->table = NULL;
540 }
541
542 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
543 {
544 int ret = -1;
545
546 id -= id_tbl->start;
547 if (id >= id_tbl->max)
548 return ret;
549
550 spin_lock(&id_tbl->lock);
551 if (!test_bit(id, id_tbl->table)) {
552 set_bit(id, id_tbl->table);
553 ret = 0;
554 }
555 spin_unlock(&id_tbl->lock);
556 return ret;
557 }
558
559 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
560 {
561 u16 id;
562
563 spin_lock(&id_tbl->lock);
564 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
565 if (id >= id_tbl->max) {
566 id = QEDI_LOCAL_PORT_INVALID;
567 if (id_tbl->next != 0) {
568 id = find_first_zero_bit(id_tbl->table, id_tbl->next);
569 if (id >= id_tbl->next)
570 id = QEDI_LOCAL_PORT_INVALID;
571 }
572 }
573
574 if (id < id_tbl->max) {
575 set_bit(id, id_tbl->table);
576 id_tbl->next = (id + 1) & (id_tbl->max - 1);
577 id += id_tbl->start;
578 }
579
580 spin_unlock(&id_tbl->lock);
581
582 return id;
583 }
584
585 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
586 {
587 if (id == QEDI_LOCAL_PORT_INVALID)
588 return;
589
590 id -= id_tbl->start;
591 if (id >= id_tbl->max)
592 return;
593
594 clear_bit(id, id_tbl->table);
595 }
596
597 static void qedi_cm_free_mem(struct qedi_ctx *qedi)
598 {
599 kfree(qedi->ep_tbl);
600 qedi->ep_tbl = NULL;
601 qedi_free_id_tbl(&qedi->lcl_port_tbl);
602 }
603
604 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
605 {
606 u16 port_id;
607
608 qedi->ep_tbl = kzalloc((qedi->max_active_conns *
609 sizeof(struct qedi_endpoint *)), GFP_KERNEL);
610 if (!qedi->ep_tbl)
611 return -ENOMEM;
612 port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
613 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
614 QEDI_LOCAL_PORT_MIN, port_id)) {
615 qedi_cm_free_mem(qedi);
616 return -ENOMEM;
617 }
618
619 return 0;
620 }
621
622 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
623 {
624 struct Scsi_Host *shost;
625 struct qedi_ctx *qedi = NULL;
626
627 shost = iscsi_host_alloc(&qedi_host_template,
628 sizeof(struct qedi_ctx), 0);
629 if (!shost) {
630 QEDI_ERR(NULL, "Could not allocate shost\n");
631 goto exit_setup_shost;
632 }
633
634 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA;
635 shost->max_channel = 0;
636 shost->max_lun = ~0;
637 shost->max_cmd_len = 16;
638 shost->transportt = qedi_scsi_transport;
639
640 qedi = iscsi_host_priv(shost);
641 memset(qedi, 0, sizeof(*qedi));
642 qedi->shost = shost;
643 qedi->dbg_ctx.host_no = shost->host_no;
644 qedi->pdev = pdev;
645 qedi->dbg_ctx.pdev = pdev;
646 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
647 qedi->max_sqes = QEDI_SQ_SIZE;
648
649 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
650
651 pci_set_drvdata(pdev, qedi);
652
653 exit_setup_shost:
654 return qedi;
655 }
656
657 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
658 {
659 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
660 struct qedi_uio_dev *udev;
661 struct qedi_uio_ctrl *uctrl;
662 struct skb_work_list *work;
663 struct ethhdr *eh;
664
665 if (!qedi) {
666 QEDI_ERR(NULL, "qedi is NULL\n");
667 return -1;
668 }
669
670 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
671 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
672 "UIO DEV is not opened\n");
673 kfree_skb(skb);
674 return 0;
675 }
676
677 eh = (struct ethhdr *)skb->data;
678 /* Undo VLAN encapsulation */
679 if (eh->h_proto == htons(ETH_P_8021Q)) {
680 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
681 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
682 skb_reset_mac_header(skb);
683 }
684
685 /* Filter out non FIP/FCoE frames here to free them faster */
686 if (eh->h_proto != htons(ETH_P_ARP) &&
687 eh->h_proto != htons(ETH_P_IP) &&
688 eh->h_proto != htons(ETH_P_IPV6)) {
689 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
690 "Dropping frame ethertype [0x%x] len [0x%x].\n",
691 eh->h_proto, skb->len);
692 kfree_skb(skb);
693 return 0;
694 }
695
696 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
697 "Allowed frame ethertype [0x%x] len [0x%x].\n",
698 eh->h_proto, skb->len);
699
700 udev = qedi->udev;
701 uctrl = udev->uctrl;
702
703 work = kzalloc(sizeof(*work), GFP_ATOMIC);
704 if (!work) {
705 QEDI_WARN(&qedi->dbg_ctx,
706 "Could not allocate work so dropping frame.\n");
707 kfree_skb(skb);
708 return 0;
709 }
710
711 INIT_LIST_HEAD(&work->list);
712 work->skb = skb;
713
714 if (skb_vlan_tag_present(skb))
715 work->vlan_id = skb_vlan_tag_get(skb);
716
717 if (work->vlan_id)
718 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
719
720 spin_lock_bh(&qedi->ll2_lock);
721 list_add_tail(&work->list, &qedi->ll2_skb_list);
722 spin_unlock_bh(&qedi->ll2_lock);
723
724 wake_up_process(qedi->ll2_recv_thread);
725
726 return 0;
727 }
728
729 /* map this skb to iscsiuio mmaped region */
730 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
731 u16 vlan_id)
732 {
733 struct qedi_uio_dev *udev = NULL;
734 struct qedi_uio_ctrl *uctrl = NULL;
735 struct qedi_rx_bd rxbd;
736 struct qedi_rx_bd *p_rxbd;
737 u32 rx_bd_prod;
738 void *pkt;
739 int len = 0;
740 u32 prod;
741
742 if (!qedi) {
743 QEDI_ERR(NULL, "qedi is NULL\n");
744 return -1;
745 }
746
747 udev = qedi->udev;
748 uctrl = udev->uctrl;
749
750 ++uctrl->hw_rx_prod_cnt;
751 prod = (uctrl->hw_rx_prod + 1) % RX_RING;
752
753 pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size);
754 len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size);
755 memcpy(pkt, skb->data, len);
756
757 memset(&rxbd, 0, sizeof(rxbd));
758 rxbd.rx_pkt_index = prod;
759 rxbd.rx_pkt_len = len;
760 rxbd.vlan_id = vlan_id;
761
762 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
763 rx_bd_prod = uctrl->hw_rx_bd_prod;
764 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
765 p_rxbd += rx_bd_prod;
766
767 memcpy(p_rxbd, &rxbd, sizeof(rxbd));
768
769 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
770 "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n",
771 uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod,
772 rxbd.rx_pkt_index, rxbd.rx_pkt_len);
773 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
774 "host_rx_cons [%d] hw_rx_bd_cons [%d].\n",
775 uctrl->host_rx_cons, uctrl->host_rx_bd_cons);
776
777 uctrl->hw_rx_prod = prod;
778
779 /* notify the iscsiuio about new packet */
780 uio_event_notify(&udev->qedi_uinfo);
781
782 return 0;
783 }
784
785 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
786 {
787 struct skb_work_list *work, *work_tmp;
788
789 spin_lock_bh(&qedi->ll2_lock);
790 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
791 list_del(&work->list);
792 if (work->skb)
793 kfree_skb(work->skb);
794 kfree(work);
795 }
796 spin_unlock_bh(&qedi->ll2_lock);
797 }
798
799 static int qedi_ll2_recv_thread(void *arg)
800 {
801 struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
802 struct skb_work_list *work, *work_tmp;
803
804 set_user_nice(current, -20);
805
806 while (!kthread_should_stop()) {
807 spin_lock_bh(&qedi->ll2_lock);
808 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
809 list) {
810 list_del(&work->list);
811 qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
812 kfree_skb(work->skb);
813 kfree(work);
814 }
815 set_current_state(TASK_INTERRUPTIBLE);
816 spin_unlock_bh(&qedi->ll2_lock);
817 schedule();
818 }
819
820 __set_current_state(TASK_RUNNING);
821 return 0;
822 }
823
824 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
825 {
826 u8 num_sq_pages;
827 u32 log_page_size;
828 int rval = 0;
829
830
831 num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE;
832
833 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
834
835 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
836 "Number of CQ count is %d\n", qedi->num_queues);
837
838 memset(&qedi->pf_params.iscsi_pf_params, 0,
839 sizeof(qedi->pf_params.iscsi_pf_params));
840
841 qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev,
842 qedi->num_queues * sizeof(struct qedi_glbl_q_params),
843 &qedi->hw_p_cpuq, GFP_KERNEL);
844 if (!qedi->p_cpuq) {
845 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n");
846 rval = -1;
847 goto err_alloc_mem;
848 }
849
850 rval = qedi_alloc_global_queues(qedi);
851 if (rval) {
852 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
853 rval = -1;
854 goto err_alloc_mem;
855 }
856
857 qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
858 qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
859 qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
860 qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
861 qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
862 qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
863 qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
864 qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
865 qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000;
866 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
867
868 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
869 if ((1 << log_page_size) == QEDI_PAGE_SIZE)
870 break;
871 }
872 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
873
874 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
875 (u64)qedi->hw_p_cpuq;
876
877 /* RQ BDQ initializations.
878 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
879 * rqe_log_size: 8 for 256B RQE
880 */
881 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
882 /* BDQ address and size */
883 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
884 qedi->bdq_pbl_list_dma;
885 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
886 qedi->bdq_pbl_list_num_entries;
887 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
888
889 /* cq_num_entries: num_tasks + rq_num_entries */
890 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
891
892 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
893 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
894
895 err_alloc_mem:
896 return rval;
897 }
898
899 /* Free DMA coherent memory for array of queue pointers we pass to qed */
900 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
901 {
902 size_t size = 0;
903
904 if (qedi->p_cpuq) {
905 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
906 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq,
907 qedi->hw_p_cpuq);
908 }
909
910 qedi_free_global_queues(qedi);
911
912 kfree(qedi->global_queues);
913 }
914
915 static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block,
916 struct qedi_boot_target *tgt, u8 index)
917 {
918 u32 ipv6_en;
919
920 ipv6_en = !!(block->generic.ctrl_flags &
921 NVM_ISCSI_CFG_GEN_IPV6_ENABLED);
922
923 snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s\n",
924 block->target[index].target_name.byte);
925
926 tgt->ipv6_en = ipv6_en;
927
928 if (ipv6_en)
929 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n",
930 block->target[index].ipv6_addr.byte);
931 else
932 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n",
933 block->target[index].ipv4_addr.byte);
934 }
935
936 static int qedi_find_boot_info(struct qedi_ctx *qedi,
937 struct qed_mfw_tlv_iscsi *iscsi,
938 struct nvm_iscsi_block *block)
939 {
940 struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL;
941 u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0;
942 struct iscsi_cls_session *cls_sess;
943 struct iscsi_cls_conn *cls_conn;
944 struct qedi_conn *qedi_conn;
945 struct iscsi_session *sess;
946 struct iscsi_conn *conn;
947 char ep_ip_addr[64];
948 int i, ret = 0;
949
950 pri_ctrl_flags = !!(block->target[0].ctrl_flags &
951 NVM_ISCSI_CFG_TARGET_ENABLED);
952 if (pri_ctrl_flags) {
953 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL);
954 if (!pri_tgt)
955 return -1;
956 qedi_get_boot_tgt_info(block, pri_tgt, 0);
957 }
958
959 sec_ctrl_flags = !!(block->target[1].ctrl_flags &
960 NVM_ISCSI_CFG_TARGET_ENABLED);
961 if (sec_ctrl_flags) {
962 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL);
963 if (!sec_tgt) {
964 ret = -1;
965 goto free_tgt;
966 }
967 qedi_get_boot_tgt_info(block, sec_tgt, 1);
968 }
969
970 for (i = 0; i < qedi->max_active_conns; i++) {
971 qedi_conn = qedi_get_conn_from_id(qedi, i);
972 if (!qedi_conn)
973 continue;
974
975 if (qedi_conn->ep->ip_type == TCP_IPV4)
976 snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n",
977 qedi_conn->ep->dst_addr);
978 else
979 snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n",
980 qedi_conn->ep->dst_addr);
981
982 cls_conn = qedi_conn->cls_conn;
983 conn = cls_conn->dd_data;
984 cls_sess = iscsi_conn_to_session(cls_conn);
985 sess = cls_sess->dd_data;
986
987 if (!iscsi_is_session_online(cls_sess))
988 continue;
989
990 if (!sess->targetname)
991 continue;
992
993 if (pri_ctrl_flags) {
994 if (!strcmp(pri_tgt->iscsi_name, sess->targetname) &&
995 !strcmp(pri_tgt->ip_addr, ep_ip_addr)) {
996 found = 1;
997 break;
998 }
999 }
1000
1001 if (sec_ctrl_flags) {
1002 if (!strcmp(sec_tgt->iscsi_name, sess->targetname) &&
1003 !strcmp(sec_tgt->ip_addr, ep_ip_addr)) {
1004 found = 1;
1005 break;
1006 }
1007 }
1008 }
1009
1010 if (found) {
1011 if (conn->hdrdgst_en) {
1012 iscsi->header_digest_set = true;
1013 iscsi->header_digest = 1;
1014 }
1015
1016 if (conn->datadgst_en) {
1017 iscsi->data_digest_set = true;
1018 iscsi->data_digest = 1;
1019 }
1020 iscsi->boot_taget_portal_set = true;
1021 iscsi->boot_taget_portal = sess->tpgt;
1022
1023 } else {
1024 ret = -1;
1025 }
1026
1027 if (sec_ctrl_flags)
1028 kfree(sec_tgt);
1029 free_tgt:
1030 if (pri_ctrl_flags)
1031 kfree(pri_tgt);
1032
1033 return ret;
1034 }
1035
1036 static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
1037 {
1038 struct qedi_ctx *qedi;
1039
1040 if (!dev) {
1041 QEDI_INFO(NULL, QEDI_LOG_EVT,
1042 "dev is NULL so ignoring get_generic_tlv_data request.\n");
1043 return;
1044 }
1045 qedi = (struct qedi_ctx *)dev;
1046
1047 memset(data, 0, sizeof(struct qed_generic_tlvs));
1048 ether_addr_copy(data->mac[0], qedi->mac);
1049 }
1050
1051 /*
1052 * Protocol TLV handler
1053 */
1054 static void qedi_get_protocol_tlv_data(void *dev, void *data)
1055 {
1056 struct qed_mfw_tlv_iscsi *iscsi = data;
1057 struct qed_iscsi_stats *fw_iscsi_stats;
1058 struct nvm_iscsi_block *block = NULL;
1059 u32 chap_en = 0, mchap_en = 0;
1060 struct qedi_ctx *qedi = dev;
1061 int rval = 0;
1062
1063 fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL);
1064 if (!fw_iscsi_stats) {
1065 QEDI_ERR(&qedi->dbg_ctx,
1066 "Could not allocate memory for fw_iscsi_stats.\n");
1067 goto exit_get_data;
1068 }
1069
1070 mutex_lock(&qedi->stats_lock);
1071 /* Query firmware for offload stats */
1072 qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats);
1073 mutex_unlock(&qedi->stats_lock);
1074
1075 iscsi->rx_frames_set = true;
1076 iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt;
1077 iscsi->rx_bytes_set = true;
1078 iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt;
1079 iscsi->tx_frames_set = true;
1080 iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt;
1081 iscsi->tx_bytes_set = true;
1082 iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt;
1083 iscsi->frame_size_set = true;
1084 iscsi->frame_size = qedi->ll2_mtu;
1085 block = qedi_get_nvram_block(qedi);
1086 if (block) {
1087 chap_en = !!(block->generic.ctrl_flags &
1088 NVM_ISCSI_CFG_GEN_CHAP_ENABLED);
1089 mchap_en = !!(block->generic.ctrl_flags &
1090 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED);
1091
1092 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false;
1093 iscsi->auth_method = 1;
1094 if (chap_en)
1095 iscsi->auth_method = 2;
1096 if (mchap_en)
1097 iscsi->auth_method = 3;
1098
1099 iscsi->tx_desc_size_set = true;
1100 iscsi->tx_desc_size = QEDI_SQ_SIZE;
1101 iscsi->rx_desc_size_set = true;
1102 iscsi->rx_desc_size = QEDI_CQ_SIZE;
1103
1104 /* tpgt, hdr digest, data digest */
1105 rval = qedi_find_boot_info(qedi, iscsi, block);
1106 if (rval)
1107 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1108 "Boot target not set");
1109 }
1110
1111 kfree(fw_iscsi_stats);
1112 exit_get_data:
1113 return;
1114 }
1115
1116 static void qedi_link_update(void *dev, struct qed_link_output *link)
1117 {
1118 struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1119
1120 if (link->link_up) {
1121 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
1122 atomic_set(&qedi->link_state, QEDI_LINK_UP);
1123 } else {
1124 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1125 "Link Down event.\n");
1126 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1127 }
1128 }
1129
1130 static struct qed_iscsi_cb_ops qedi_cb_ops = {
1131 {
1132 .link_update = qedi_link_update,
1133 .get_protocol_tlv_data = qedi_get_protocol_tlv_data,
1134 .get_generic_tlv_data = qedi_get_generic_tlv_data,
1135 }
1136 };
1137
1138 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
1139 u16 que_idx, struct qedi_percpu_s *p)
1140 {
1141 struct qedi_work *qedi_work;
1142 struct qedi_conn *q_conn;
1143 struct iscsi_conn *conn;
1144 struct qedi_cmd *qedi_cmd;
1145 u32 iscsi_cid;
1146 int rc = 0;
1147
1148 iscsi_cid = cqe->cqe_common.conn_id;
1149 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
1150 if (!q_conn) {
1151 QEDI_WARN(&qedi->dbg_ctx,
1152 "Session no longer exists for cid=0x%x!!\n",
1153 iscsi_cid);
1154 return -1;
1155 }
1156 conn = q_conn->cls_conn->dd_data;
1157
1158 switch (cqe->cqe_common.cqe_type) {
1159 case ISCSI_CQE_TYPE_SOLICITED:
1160 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
1161 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
1162 if (!qedi_cmd) {
1163 rc = -1;
1164 break;
1165 }
1166 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
1167 qedi_cmd->cqe_work.qedi = qedi;
1168 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
1169 qedi_cmd->cqe_work.que_idx = que_idx;
1170 qedi_cmd->cqe_work.is_solicited = true;
1171 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
1172 break;
1173 case ISCSI_CQE_TYPE_UNSOLICITED:
1174 case ISCSI_CQE_TYPE_DUMMY:
1175 case ISCSI_CQE_TYPE_TASK_CLEANUP:
1176 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
1177 if (!qedi_work) {
1178 rc = -1;
1179 break;
1180 }
1181 INIT_LIST_HEAD(&qedi_work->list);
1182 qedi_work->qedi = qedi;
1183 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
1184 qedi_work->que_idx = que_idx;
1185 qedi_work->is_solicited = false;
1186 list_add_tail(&qedi_work->list, &p->work_list);
1187 break;
1188 default:
1189 rc = -1;
1190 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
1191 }
1192 return rc;
1193 }
1194
1195 static bool qedi_process_completions(struct qedi_fastpath *fp)
1196 {
1197 struct qedi_ctx *qedi = fp->qedi;
1198 struct qed_sb_info *sb_info = fp->sb_info;
1199 struct status_block_e4 *sb = sb_info->sb_virt;
1200 struct qedi_percpu_s *p = NULL;
1201 struct global_queue *que;
1202 u16 prod_idx;
1203 unsigned long flags;
1204 union iscsi_cqe *cqe;
1205 int cpu;
1206 int ret;
1207
1208 /* Get the current firmware producer index */
1209 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1210
1211 if (prod_idx >= QEDI_CQ_SIZE)
1212 prod_idx = prod_idx % QEDI_CQ_SIZE;
1213
1214 que = qedi->global_queues[fp->sb_id];
1215 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1216 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
1217 que, prod_idx, que->cq_cons_idx, fp->sb_id);
1218
1219 qedi->intr_cpu = fp->sb_id;
1220 cpu = smp_processor_id();
1221 p = &per_cpu(qedi_percpu, cpu);
1222
1223 if (unlikely(!p->iothread))
1224 WARN_ON(1);
1225
1226 spin_lock_irqsave(&p->p_work_lock, flags);
1227 while (que->cq_cons_idx != prod_idx) {
1228 cqe = &que->cq[que->cq_cons_idx];
1229
1230 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1231 "cqe=%p prod_idx=%d cons_idx=%d.\n",
1232 cqe, prod_idx, que->cq_cons_idx);
1233
1234 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1235 if (ret)
1236 QEDI_WARN(&qedi->dbg_ctx,
1237 "Dropping CQE 0x%x for cid=0x%x.\n",
1238 que->cq_cons_idx, cqe->cqe_common.conn_id);
1239
1240 que->cq_cons_idx++;
1241 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1242 que->cq_cons_idx = 0;
1243 }
1244 wake_up_process(p->iothread);
1245 spin_unlock_irqrestore(&p->p_work_lock, flags);
1246
1247 return true;
1248 }
1249
1250 static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1251 {
1252 struct qedi_ctx *qedi = fp->qedi;
1253 struct global_queue *que;
1254 struct qed_sb_info *sb_info = fp->sb_info;
1255 struct status_block_e4 *sb = sb_info->sb_virt;
1256 u16 prod_idx;
1257
1258 barrier();
1259
1260 /* Get the current firmware producer index */
1261 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1262
1263 /* Get the pointer to the global CQ this completion is on */
1264 que = qedi->global_queues[fp->sb_id];
1265
1266 /* prod idx wrap around uint16 */
1267 if (prod_idx >= QEDI_CQ_SIZE)
1268 prod_idx = prod_idx % QEDI_CQ_SIZE;
1269
1270 return (que->cq_cons_idx != prod_idx);
1271 }
1272
1273 /* MSI-X fastpath handler code */
1274 static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1275 {
1276 struct qedi_fastpath *fp = dev_id;
1277 struct qedi_ctx *qedi = fp->qedi;
1278 bool wake_io_thread = true;
1279
1280 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1281
1282 process_again:
1283 wake_io_thread = qedi_process_completions(fp);
1284 if (wake_io_thread) {
1285 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1286 "process already running\n");
1287 }
1288
1289 if (qedi_fp_has_work(fp) == 0)
1290 qed_sb_update_sb_idx(fp->sb_info);
1291
1292 /* Check for more work */
1293 rmb();
1294
1295 if (qedi_fp_has_work(fp) == 0)
1296 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1297 else
1298 goto process_again;
1299
1300 return IRQ_HANDLED;
1301 }
1302
1303 /* simd handler for MSI/INTa */
1304 static void qedi_simd_int_handler(void *cookie)
1305 {
1306 /* Cookie is qedi_ctx struct */
1307 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1308
1309 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1310 }
1311
1312 #define QEDI_SIMD_HANDLER_NUM 0
1313 static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1314 {
1315 int i;
1316 u16 idx;
1317
1318 if (qedi->int_info.msix_cnt) {
1319 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1320 idx = i * qedi->dev_info.common.num_hwfns +
1321 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1322
1323 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1324 "Freeing IRQ #%d vector_idx=%d.\n", i, idx);
1325
1326 synchronize_irq(qedi->int_info.msix[idx].vector);
1327 irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1328 NULL);
1329 free_irq(qedi->int_info.msix[idx].vector,
1330 &qedi->fp_array[i]);
1331 }
1332 } else {
1333 qedi_ops->common->simd_handler_clean(qedi->cdev,
1334 QEDI_SIMD_HANDLER_NUM);
1335 }
1336
1337 qedi->int_info.used_cnt = 0;
1338 qedi_ops->common->set_fp_int(qedi->cdev, 0);
1339 }
1340
1341 static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1342 {
1343 int i, rc, cpu;
1344 u16 idx;
1345
1346 cpu = cpumask_first(cpu_online_mask);
1347 for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) {
1348 idx = i * qedi->dev_info.common.num_hwfns +
1349 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1350
1351 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1352 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
1353 qedi->dev_info.common.num_hwfns,
1354 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
1355
1356 rc = request_irq(qedi->int_info.msix[idx].vector,
1357 qedi_msix_handler, 0, "qedi",
1358 &qedi->fp_array[i]);
1359 if (rc) {
1360 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1361 qedi_sync_free_irqs(qedi);
1362 return rc;
1363 }
1364 qedi->int_info.used_cnt++;
1365 rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1366 get_cpu_mask(cpu));
1367 cpu = cpumask_next(cpu, cpu_online_mask);
1368 }
1369
1370 return 0;
1371 }
1372
1373 static int qedi_setup_int(struct qedi_ctx *qedi)
1374 {
1375 int rc = 0;
1376
1377 rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus());
1378 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1379 if (rc)
1380 goto exit_setup_int;
1381
1382 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1383 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1384 qedi->int_info.msix_cnt, num_online_cpus());
1385
1386 if (qedi->int_info.msix_cnt) {
1387 rc = qedi_request_msix_irq(qedi);
1388 goto exit_setup_int;
1389 } else {
1390 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1391 QEDI_SIMD_HANDLER_NUM,
1392 qedi_simd_int_handler);
1393 qedi->int_info.used_cnt = 1;
1394 }
1395
1396 exit_setup_int:
1397 return rc;
1398 }
1399
1400 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1401 {
1402 if (qedi->iscsi_image)
1403 dma_free_coherent(&qedi->pdev->dev,
1404 sizeof(struct qedi_nvm_iscsi_image),
1405 qedi->iscsi_image, qedi->nvm_buf_dma);
1406 }
1407
1408 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1409 {
1410 qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev,
1411 sizeof(struct qedi_nvm_iscsi_image),
1412 &qedi->nvm_buf_dma, GFP_KERNEL);
1413 if (!qedi->iscsi_image) {
1414 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1415 return -ENOMEM;
1416 }
1417 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1418 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
1419 qedi->nvm_buf_dma);
1420
1421 return 0;
1422 }
1423
1424 static void qedi_free_bdq(struct qedi_ctx *qedi)
1425 {
1426 int i;
1427
1428 if (qedi->bdq_pbl_list)
1429 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
1430 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1431
1432 if (qedi->bdq_pbl)
1433 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1434 qedi->bdq_pbl, qedi->bdq_pbl_dma);
1435
1436 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1437 if (qedi->bdq[i].buf_addr) {
1438 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1439 qedi->bdq[i].buf_addr,
1440 qedi->bdq[i].buf_dma);
1441 }
1442 }
1443 }
1444
1445 static void qedi_free_global_queues(struct qedi_ctx *qedi)
1446 {
1447 int i;
1448 struct global_queue **gl = qedi->global_queues;
1449
1450 for (i = 0; i < qedi->num_queues; i++) {
1451 if (!gl[i])
1452 continue;
1453
1454 if (gl[i]->cq)
1455 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1456 gl[i]->cq, gl[i]->cq_dma);
1457 if (gl[i]->cq_pbl)
1458 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1459 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1460
1461 kfree(gl[i]);
1462 }
1463 qedi_free_bdq(qedi);
1464 qedi_free_nvm_iscsi_cfg(qedi);
1465 }
1466
1467 static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1468 {
1469 int i;
1470 struct scsi_bd *pbl;
1471 u64 *list;
1472 dma_addr_t page;
1473
1474 /* Alloc dma memory for BDQ buffers */
1475 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1476 qedi->bdq[i].buf_addr =
1477 dma_alloc_coherent(&qedi->pdev->dev,
1478 QEDI_BDQ_BUF_SIZE,
1479 &qedi->bdq[i].buf_dma,
1480 GFP_KERNEL);
1481 if (!qedi->bdq[i].buf_addr) {
1482 QEDI_ERR(&qedi->dbg_ctx,
1483 "Could not allocate BDQ buffer %d.\n", i);
1484 return -ENOMEM;
1485 }
1486 }
1487
1488 /* Alloc dma memory for BDQ page buffer list */
1489 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
1490 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE);
1491 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1492
1493 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1494 qedi->rq_num_entries);
1495
1496 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1497 qedi->bdq_pbl_mem_size,
1498 &qedi->bdq_pbl_dma, GFP_KERNEL);
1499 if (!qedi->bdq_pbl) {
1500 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1501 return -ENOMEM;
1502 }
1503
1504 /*
1505 * Populate BDQ PBL with physical and virtual address of individual
1506 * BDQ buffers
1507 */
1508 pbl = (struct scsi_bd *)qedi->bdq_pbl;
1509 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1510 pbl->address.hi =
1511 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1512 pbl->address.lo =
1513 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1514 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1515 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1516 pbl, pbl->address.hi, pbl->address.lo, i);
1517 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
1518 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
1519 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
1520 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
1521 pbl++;
1522 }
1523
1524 /* Allocate list of PBL pages */
1525 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
1526 QEDI_PAGE_SIZE,
1527 &qedi->bdq_pbl_list_dma,
1528 GFP_KERNEL);
1529 if (!qedi->bdq_pbl_list) {
1530 QEDI_ERR(&qedi->dbg_ctx,
1531 "Could not allocate list of PBL pages.\n");
1532 return -ENOMEM;
1533 }
1534
1535 /*
1536 * Now populate PBL list with pages that contain pointers to the
1537 * individual buffers.
1538 */
1539 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
1540 QEDI_PAGE_SIZE;
1541 list = (u64 *)qedi->bdq_pbl_list;
1542 page = qedi->bdq_pbl_list_dma;
1543 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1544 *list = qedi->bdq_pbl_dma;
1545 list++;
1546 page += QEDI_PAGE_SIZE;
1547 }
1548
1549 return 0;
1550 }
1551
1552 static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1553 {
1554 u32 *list;
1555 int i;
1556 int status = 0, rc;
1557 u32 *pbl;
1558 dma_addr_t page;
1559 int num_pages;
1560
1561 /*
1562 * Number of global queues (CQ / RQ). This should
1563 * be <= number of available MSIX vectors for the PF
1564 */
1565 if (!qedi->num_queues) {
1566 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1567 return 1;
1568 }
1569
1570 /* Make sure we allocated the PBL that will contain the physical
1571 * addresses of our queues
1572 */
1573 if (!qedi->p_cpuq) {
1574 status = 1;
1575 goto mem_alloc_failure;
1576 }
1577
1578 qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1579 qedi->num_queues), GFP_KERNEL);
1580 if (!qedi->global_queues) {
1581 QEDI_ERR(&qedi->dbg_ctx,
1582 "Unable to allocate global queues array ptr memory\n");
1583 return -ENOMEM;
1584 }
1585 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1586 "qedi->global_queues=%p.\n", qedi->global_queues);
1587
1588 /* Allocate DMA coherent buffers for BDQ */
1589 rc = qedi_alloc_bdq(qedi);
1590 if (rc)
1591 goto mem_alloc_failure;
1592
1593 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
1594 rc = qedi_alloc_nvm_iscsi_cfg(qedi);
1595 if (rc)
1596 goto mem_alloc_failure;
1597
1598 /* Allocate a CQ and an associated PBL for each MSI-X
1599 * vector.
1600 */
1601 for (i = 0; i < qedi->num_queues; i++) {
1602 qedi->global_queues[i] =
1603 kzalloc(sizeof(*qedi->global_queues[0]),
1604 GFP_KERNEL);
1605 if (!qedi->global_queues[i]) {
1606 QEDI_ERR(&qedi->dbg_ctx,
1607 "Unable to allocation global queue %d.\n", i);
1608 goto mem_alloc_failure;
1609 }
1610
1611 qedi->global_queues[i]->cq_mem_size =
1612 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1613 qedi->global_queues[i]->cq_mem_size =
1614 (qedi->global_queues[i]->cq_mem_size +
1615 (QEDI_PAGE_SIZE - 1));
1616
1617 qedi->global_queues[i]->cq_pbl_size =
1618 (qedi->global_queues[i]->cq_mem_size /
1619 QEDI_PAGE_SIZE) * sizeof(void *);
1620 qedi->global_queues[i]->cq_pbl_size =
1621 (qedi->global_queues[i]->cq_pbl_size +
1622 (QEDI_PAGE_SIZE - 1));
1623
1624 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev,
1625 qedi->global_queues[i]->cq_mem_size,
1626 &qedi->global_queues[i]->cq_dma,
1627 GFP_KERNEL);
1628
1629 if (!qedi->global_queues[i]->cq) {
1630 QEDI_WARN(&qedi->dbg_ctx,
1631 "Could not allocate cq.\n");
1632 status = -ENOMEM;
1633 goto mem_alloc_failure;
1634 }
1635 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1636 qedi->global_queues[i]->cq_pbl_size,
1637 &qedi->global_queues[i]->cq_pbl_dma,
1638 GFP_KERNEL);
1639
1640 if (!qedi->global_queues[i]->cq_pbl) {
1641 QEDI_WARN(&qedi->dbg_ctx,
1642 "Could not allocate cq PBL.\n");
1643 status = -ENOMEM;
1644 goto mem_alloc_failure;
1645 }
1646
1647 /* Create PBL */
1648 num_pages = qedi->global_queues[i]->cq_mem_size /
1649 QEDI_PAGE_SIZE;
1650 page = qedi->global_queues[i]->cq_dma;
1651 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1652
1653 while (num_pages--) {
1654 *pbl = (u32)page;
1655 pbl++;
1656 *pbl = (u32)((u64)page >> 32);
1657 pbl++;
1658 page += QEDI_PAGE_SIZE;
1659 }
1660 }
1661
1662 list = (u32 *)qedi->p_cpuq;
1663
1664 /*
1665 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
1666 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
1667 * to the physical address which contains an array of pointers to the
1668 * physical addresses of the specific queue pages.
1669 */
1670 for (i = 0; i < qedi->num_queues; i++) {
1671 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1672 list++;
1673 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1674 list++;
1675
1676 *list = (u32)0;
1677 list++;
1678 *list = (u32)((u64)0 >> 32);
1679 list++;
1680 }
1681
1682 return 0;
1683
1684 mem_alloc_failure:
1685 qedi_free_global_queues(qedi);
1686 return status;
1687 }
1688
1689 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1690 {
1691 int rval = 0;
1692 u32 *pbl;
1693 dma_addr_t page;
1694 int num_pages;
1695
1696 if (!ep)
1697 return -EIO;
1698
1699 /* Calculate appropriate queue and PBL sizes */
1700 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1701 ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1702
1703 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1704 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1705
1706 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1707 &ep->sq_dma, GFP_KERNEL);
1708 if (!ep->sq) {
1709 QEDI_WARN(&qedi->dbg_ctx,
1710 "Could not allocate send queue.\n");
1711 rval = -ENOMEM;
1712 goto out;
1713 }
1714 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1715 &ep->sq_pbl_dma, GFP_KERNEL);
1716 if (!ep->sq_pbl) {
1717 QEDI_WARN(&qedi->dbg_ctx,
1718 "Could not allocate send queue PBL.\n");
1719 rval = -ENOMEM;
1720 goto out_free_sq;
1721 }
1722
1723 /* Create PBL */
1724 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1725 page = ep->sq_dma;
1726 pbl = (u32 *)ep->sq_pbl;
1727
1728 while (num_pages--) {
1729 *pbl = (u32)page;
1730 pbl++;
1731 *pbl = (u32)((u64)page >> 32);
1732 pbl++;
1733 page += QEDI_PAGE_SIZE;
1734 }
1735
1736 return rval;
1737
1738 out_free_sq:
1739 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1740 ep->sq_dma);
1741 out:
1742 return rval;
1743 }
1744
1745 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1746 {
1747 if (ep->sq_pbl)
1748 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1749 ep->sq_pbl_dma);
1750 if (ep->sq)
1751 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1752 ep->sq_dma);
1753 }
1754
1755 int qedi_get_task_idx(struct qedi_ctx *qedi)
1756 {
1757 s16 tmp_idx;
1758
1759 again:
1760 tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1761 MAX_ISCSI_TASK_ENTRIES);
1762
1763 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1764 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1765 tmp_idx = -1;
1766 goto err_idx;
1767 }
1768
1769 if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1770 goto again;
1771
1772 err_idx:
1773 return tmp_idx;
1774 }
1775
1776 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1777 {
1778 if (!test_and_clear_bit(idx, qedi->task_idx_map))
1779 QEDI_ERR(&qedi->dbg_ctx,
1780 "FW task context, already cleared, tid=0x%x\n", idx);
1781 }
1782
1783 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1784 struct qedi_cmd *cmd)
1785 {
1786 qedi->itt_map[tid].itt = proto_itt;
1787 qedi->itt_map[tid].p_cmd = cmd;
1788
1789 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1790 "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1791 qedi->itt_map[tid].itt);
1792 }
1793
1794 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1795 {
1796 u16 i;
1797
1798 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1799 if (qedi->itt_map[i].itt == itt) {
1800 *tid = i;
1801 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1802 "Ref itt=0x%x, found at tid=0x%x\n",
1803 itt, *tid);
1804 return;
1805 }
1806 }
1807
1808 WARN_ON(1);
1809 }
1810
1811 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1812 {
1813 *proto_itt = qedi->itt_map[tid].itt;
1814 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1815 "Get itt map tid [0x%x with proto itt[0x%x]",
1816 tid, *proto_itt);
1817 }
1818
1819 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1820 {
1821 struct qedi_cmd *cmd = NULL;
1822
1823 if (tid >= MAX_ISCSI_TASK_ENTRIES)
1824 return NULL;
1825
1826 cmd = qedi->itt_map[tid].p_cmd;
1827 if (cmd->task_id != tid)
1828 return NULL;
1829
1830 qedi->itt_map[tid].p_cmd = NULL;
1831
1832 return cmd;
1833 }
1834
1835 static int qedi_alloc_itt(struct qedi_ctx *qedi)
1836 {
1837 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1838 sizeof(struct qedi_itt_map), GFP_KERNEL);
1839 if (!qedi->itt_map) {
1840 QEDI_ERR(&qedi->dbg_ctx,
1841 "Unable to allocate itt map array memory\n");
1842 return -ENOMEM;
1843 }
1844 return 0;
1845 }
1846
1847 static void qedi_free_itt(struct qedi_ctx *qedi)
1848 {
1849 kfree(qedi->itt_map);
1850 }
1851
1852 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1853 .rx_cb = qedi_ll2_rx,
1854 .tx_cb = NULL,
1855 };
1856
1857 static int qedi_percpu_io_thread(void *arg)
1858 {
1859 struct qedi_percpu_s *p = arg;
1860 struct qedi_work *work, *tmp;
1861 unsigned long flags;
1862 LIST_HEAD(work_list);
1863
1864 set_user_nice(current, -20);
1865
1866 while (!kthread_should_stop()) {
1867 spin_lock_irqsave(&p->p_work_lock, flags);
1868 while (!list_empty(&p->work_list)) {
1869 list_splice_init(&p->work_list, &work_list);
1870 spin_unlock_irqrestore(&p->p_work_lock, flags);
1871
1872 list_for_each_entry_safe(work, tmp, &work_list, list) {
1873 list_del_init(&work->list);
1874 qedi_fp_process_cqes(work);
1875 if (!work->is_solicited)
1876 kfree(work);
1877 }
1878 cond_resched();
1879 spin_lock_irqsave(&p->p_work_lock, flags);
1880 }
1881 set_current_state(TASK_INTERRUPTIBLE);
1882 spin_unlock_irqrestore(&p->p_work_lock, flags);
1883 schedule();
1884 }
1885 __set_current_state(TASK_RUNNING);
1886
1887 return 0;
1888 }
1889
1890 static int qedi_cpu_online(unsigned int cpu)
1891 {
1892 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1893 struct task_struct *thread;
1894
1895 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1896 cpu_to_node(cpu),
1897 "qedi_thread/%d", cpu);
1898 if (IS_ERR(thread))
1899 return PTR_ERR(thread);
1900
1901 kthread_bind(thread, cpu);
1902 p->iothread = thread;
1903 wake_up_process(thread);
1904 return 0;
1905 }
1906
1907 static int qedi_cpu_offline(unsigned int cpu)
1908 {
1909 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1910 struct qedi_work *work, *tmp;
1911 struct task_struct *thread;
1912
1913 spin_lock_bh(&p->p_work_lock);
1914 thread = p->iothread;
1915 p->iothread = NULL;
1916
1917 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1918 list_del_init(&work->list);
1919 qedi_fp_process_cqes(work);
1920 if (!work->is_solicited)
1921 kfree(work);
1922 }
1923
1924 spin_unlock_bh(&p->p_work_lock);
1925 if (thread)
1926 kthread_stop(thread);
1927 return 0;
1928 }
1929
1930 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
1931 {
1932 struct qed_ll2_params params;
1933
1934 qedi_recover_all_conns(qedi);
1935
1936 qedi_ops->ll2->stop(qedi->cdev);
1937 qedi_ll2_free_skbs(qedi);
1938
1939 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
1940 qedi->ll2_mtu, mtu);
1941 memset(&params, 0, sizeof(params));
1942 qedi->ll2_mtu = mtu;
1943 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
1944 params.drop_ttl0_packets = 0;
1945 params.rx_vlan_stripping = 1;
1946 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
1947 qedi_ops->ll2->start(qedi->cdev, &params);
1948 }
1949
1950 /**
1951 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
1952 * for gaps) for the matching absolute-pf-id of the QEDI device.
1953 */
1954 static struct nvm_iscsi_block *
1955 qedi_get_nvram_block(struct qedi_ctx *qedi)
1956 {
1957 int i;
1958 u8 pf;
1959 u32 flags;
1960 struct nvm_iscsi_block *block;
1961
1962 pf = qedi->dev_info.common.abs_pf_id;
1963 block = &qedi->iscsi_image->iscsi_cfg.block[0];
1964 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
1965 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
1966 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
1967 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
1968 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
1969 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
1970 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
1971 return block;
1972 }
1973 return NULL;
1974 }
1975
1976 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
1977 {
1978 struct qedi_ctx *qedi = data;
1979 struct nvm_iscsi_initiator *initiator;
1980 int rc = 1;
1981 u32 ipv6_en, dhcp_en, ip_len;
1982 struct nvm_iscsi_block *block;
1983 char *fmt, *ip, *sub, *gw;
1984
1985 block = qedi_get_nvram_block(qedi);
1986 if (!block)
1987 return 0;
1988
1989 initiator = &block->initiator;
1990 ipv6_en = block->generic.ctrl_flags &
1991 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
1992 dhcp_en = block->generic.ctrl_flags &
1993 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
1994 /* Static IP assignments. */
1995 fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
1996 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
1997 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
1998 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
1999 initiator->ipv4.subnet_mask.byte;
2000 gw = ipv6_en ? initiator->ipv6.gateway.byte :
2001 initiator->ipv4.gateway.byte;
2002 /* DHCP IP adjustments. */
2003 fmt = dhcp_en ? "%s\n" : fmt;
2004 if (dhcp_en) {
2005 ip = ipv6_en ? "0::0" : "0.0.0.0";
2006 sub = ip;
2007 gw = ip;
2008 ip_len = ipv6_en ? 5 : 8;
2009 }
2010
2011 switch (type) {
2012 case ISCSI_BOOT_ETH_IP_ADDR:
2013 rc = snprintf(buf, ip_len, fmt, ip);
2014 break;
2015 case ISCSI_BOOT_ETH_SUBNET_MASK:
2016 rc = snprintf(buf, ip_len, fmt, sub);
2017 break;
2018 case ISCSI_BOOT_ETH_GATEWAY:
2019 rc = snprintf(buf, ip_len, fmt, gw);
2020 break;
2021 case ISCSI_BOOT_ETH_FLAGS:
2022 rc = snprintf(buf, 3, "%hhd\n",
2023 SYSFS_FLAG_FW_SEL_BOOT);
2024 break;
2025 case ISCSI_BOOT_ETH_INDEX:
2026 rc = snprintf(buf, 3, "0\n");
2027 break;
2028 case ISCSI_BOOT_ETH_MAC:
2029 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
2030 break;
2031 case ISCSI_BOOT_ETH_VLAN:
2032 rc = snprintf(buf, 12, "%d\n",
2033 GET_FIELD2(initiator->generic_cont0,
2034 NVM_ISCSI_CFG_INITIATOR_VLAN));
2035 break;
2036 case ISCSI_BOOT_ETH_ORIGIN:
2037 if (dhcp_en)
2038 rc = snprintf(buf, 3, "3\n");
2039 break;
2040 default:
2041 rc = 0;
2042 break;
2043 }
2044
2045 return rc;
2046 }
2047
2048 static umode_t qedi_eth_get_attr_visibility(void *data, int type)
2049 {
2050 int rc = 1;
2051
2052 switch (type) {
2053 case ISCSI_BOOT_ETH_FLAGS:
2054 case ISCSI_BOOT_ETH_MAC:
2055 case ISCSI_BOOT_ETH_INDEX:
2056 case ISCSI_BOOT_ETH_IP_ADDR:
2057 case ISCSI_BOOT_ETH_SUBNET_MASK:
2058 case ISCSI_BOOT_ETH_GATEWAY:
2059 case ISCSI_BOOT_ETH_ORIGIN:
2060 case ISCSI_BOOT_ETH_VLAN:
2061 rc = 0444;
2062 break;
2063 default:
2064 rc = 0;
2065 break;
2066 }
2067 return rc;
2068 }
2069
2070 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
2071 {
2072 struct qedi_ctx *qedi = data;
2073 struct nvm_iscsi_initiator *initiator;
2074 int rc;
2075 struct nvm_iscsi_block *block;
2076
2077 block = qedi_get_nvram_block(qedi);
2078 if (!block)
2079 return 0;
2080
2081 initiator = &block->initiator;
2082
2083 switch (type) {
2084 case ISCSI_BOOT_INI_INITIATOR_NAME:
2085 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2086 initiator->initiator_name.byte);
2087 break;
2088 default:
2089 rc = 0;
2090 break;
2091 }
2092 return rc;
2093 }
2094
2095 static umode_t qedi_ini_get_attr_visibility(void *data, int type)
2096 {
2097 int rc;
2098
2099 switch (type) {
2100 case ISCSI_BOOT_INI_INITIATOR_NAME:
2101 rc = 0444;
2102 break;
2103 default:
2104 rc = 0;
2105 break;
2106 }
2107 return rc;
2108 }
2109
2110 static ssize_t
2111 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
2112 char *buf, enum qedi_nvm_tgts idx)
2113 {
2114 int rc = 1;
2115 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
2116 struct nvm_iscsi_block *block;
2117 char *chap_name, *chap_secret;
2118 char *mchap_name, *mchap_secret;
2119
2120 block = qedi_get_nvram_block(qedi);
2121 if (!block)
2122 goto exit_show_tgt_info;
2123
2124 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2125 "Port:%d, tgt_idx:%d\n",
2126 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
2127
2128 ctrl_flags = block->target[idx].ctrl_flags &
2129 NVM_ISCSI_CFG_TARGET_ENABLED;
2130
2131 if (!ctrl_flags) {
2132 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2133 "Target disabled\n");
2134 goto exit_show_tgt_info;
2135 }
2136
2137 ipv6_en = block->generic.ctrl_flags &
2138 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2139 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2140 chap_en = block->generic.ctrl_flags &
2141 NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
2142 chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
2143 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
2144
2145 mchap_en = block->generic.ctrl_flags &
2146 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
2147 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
2148 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
2149
2150 switch (type) {
2151 case ISCSI_BOOT_TGT_NAME:
2152 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2153 block->target[idx].target_name.byte);
2154 break;
2155 case ISCSI_BOOT_TGT_IP_ADDR:
2156 if (ipv6_en)
2157 rc = snprintf(buf, ip_len, "%pI6\n",
2158 block->target[idx].ipv6_addr.byte);
2159 else
2160 rc = snprintf(buf, ip_len, "%pI4\n",
2161 block->target[idx].ipv4_addr.byte);
2162 break;
2163 case ISCSI_BOOT_TGT_PORT:
2164 rc = snprintf(buf, 12, "%d\n",
2165 GET_FIELD2(block->target[idx].generic_cont0,
2166 NVM_ISCSI_CFG_TARGET_TCP_PORT));
2167 break;
2168 case ISCSI_BOOT_TGT_LUN:
2169 rc = snprintf(buf, 22, "%.*d\n",
2170 block->target[idx].lun.value[1],
2171 block->target[idx].lun.value[0]);
2172 break;
2173 case ISCSI_BOOT_TGT_CHAP_NAME:
2174 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2175 chap_name);
2176 break;
2177 case ISCSI_BOOT_TGT_CHAP_SECRET:
2178 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2179 chap_secret);
2180 break;
2181 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2182 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2183 mchap_name);
2184 break;
2185 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2186 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2187 mchap_secret);
2188 break;
2189 case ISCSI_BOOT_TGT_FLAGS:
2190 rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
2191 break;
2192 case ISCSI_BOOT_TGT_NIC_ASSOC:
2193 rc = snprintf(buf, 3, "0\n");
2194 break;
2195 default:
2196 rc = 0;
2197 break;
2198 }
2199
2200 exit_show_tgt_info:
2201 return rc;
2202 }
2203
2204 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
2205 {
2206 struct qedi_ctx *qedi = data;
2207
2208 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
2209 }
2210
2211 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
2212 {
2213 struct qedi_ctx *qedi = data;
2214
2215 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
2216 }
2217
2218 static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
2219 {
2220 int rc;
2221
2222 switch (type) {
2223 case ISCSI_BOOT_TGT_NAME:
2224 case ISCSI_BOOT_TGT_IP_ADDR:
2225 case ISCSI_BOOT_TGT_PORT:
2226 case ISCSI_BOOT_TGT_LUN:
2227 case ISCSI_BOOT_TGT_CHAP_NAME:
2228 case ISCSI_BOOT_TGT_CHAP_SECRET:
2229 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2230 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2231 case ISCSI_BOOT_TGT_NIC_ASSOC:
2232 case ISCSI_BOOT_TGT_FLAGS:
2233 rc = 0444;
2234 break;
2235 default:
2236 rc = 0;
2237 break;
2238 }
2239 return rc;
2240 }
2241
2242 static void qedi_boot_release(void *data)
2243 {
2244 struct qedi_ctx *qedi = data;
2245
2246 scsi_host_put(qedi->shost);
2247 }
2248
2249 static int qedi_get_boot_info(struct qedi_ctx *qedi)
2250 {
2251 int ret = 1;
2252
2253 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2254 "Get NVM iSCSI CFG image\n");
2255 ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2256 QED_NVM_IMAGE_ISCSI_CFG,
2257 (char *)qedi->iscsi_image,
2258 sizeof(struct qedi_nvm_iscsi_image));
2259 if (ret)
2260 QEDI_ERR(&qedi->dbg_ctx,
2261 "Could not get NVM image. ret = %d\n", ret);
2262
2263 return ret;
2264 }
2265
2266 static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2267 {
2268 struct iscsi_boot_kobj *boot_kobj;
2269
2270 if (qedi_get_boot_info(qedi))
2271 return -EPERM;
2272
2273 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2274 if (!qedi->boot_kset)
2275 goto kset_free;
2276
2277 if (!scsi_host_get(qedi->shost))
2278 goto kset_free;
2279
2280 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2281 qedi_show_boot_tgt_pri_info,
2282 qedi_tgt_get_attr_visibility,
2283 qedi_boot_release);
2284 if (!boot_kobj)
2285 goto put_host;
2286
2287 if (!scsi_host_get(qedi->shost))
2288 goto kset_free;
2289
2290 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2291 qedi_show_boot_tgt_sec_info,
2292 qedi_tgt_get_attr_visibility,
2293 qedi_boot_release);
2294 if (!boot_kobj)
2295 goto put_host;
2296
2297 if (!scsi_host_get(qedi->shost))
2298 goto kset_free;
2299
2300 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2301 qedi_show_boot_ini_info,
2302 qedi_ini_get_attr_visibility,
2303 qedi_boot_release);
2304 if (!boot_kobj)
2305 goto put_host;
2306
2307 if (!scsi_host_get(qedi->shost))
2308 goto kset_free;
2309
2310 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2311 qedi_show_boot_eth_info,
2312 qedi_eth_get_attr_visibility,
2313 qedi_boot_release);
2314 if (!boot_kobj)
2315 goto put_host;
2316
2317 return 0;
2318
2319 put_host:
2320 scsi_host_put(qedi->shost);
2321 kset_free:
2322 iscsi_boot_destroy_kset(qedi->boot_kset);
2323 return -ENOMEM;
2324 }
2325
2326 static void __qedi_remove(struct pci_dev *pdev, int mode)
2327 {
2328 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2329 int rval;
2330
2331 if (qedi->tmf_thread) {
2332 flush_workqueue(qedi->tmf_thread);
2333 destroy_workqueue(qedi->tmf_thread);
2334 qedi->tmf_thread = NULL;
2335 }
2336
2337 if (qedi->offload_thread) {
2338 flush_workqueue(qedi->offload_thread);
2339 destroy_workqueue(qedi->offload_thread);
2340 qedi->offload_thread = NULL;
2341 }
2342
2343 #ifdef CONFIG_DEBUG_FS
2344 qedi_dbg_host_exit(&qedi->dbg_ctx);
2345 #endif
2346 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2347 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2348
2349 qedi_sync_free_irqs(qedi);
2350
2351 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2352 qedi_ops->stop(qedi->cdev);
2353 qedi_ops->ll2->stop(qedi->cdev);
2354 }
2355
2356 if (mode == QEDI_MODE_NORMAL)
2357 qedi_free_iscsi_pf_param(qedi);
2358
2359 rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
2360 if (rval)
2361 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
2362
2363 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2364 qedi_ops->common->slowpath_stop(qedi->cdev);
2365 qedi_ops->common->remove(qedi->cdev);
2366 }
2367
2368 qedi_destroy_fp(qedi);
2369
2370 if (mode == QEDI_MODE_NORMAL) {
2371 qedi_release_cid_que(qedi);
2372 qedi_cm_free_mem(qedi);
2373 qedi_free_uio(qedi->udev);
2374 qedi_free_itt(qedi);
2375
2376 iscsi_host_remove(qedi->shost);
2377 iscsi_host_free(qedi->shost);
2378
2379 if (qedi->ll2_recv_thread) {
2380 kthread_stop(qedi->ll2_recv_thread);
2381 qedi->ll2_recv_thread = NULL;
2382 }
2383 qedi_ll2_free_skbs(qedi);
2384
2385 if (qedi->boot_kset)
2386 iscsi_boot_destroy_kset(qedi->boot_kset);
2387 }
2388 }
2389
2390 static int __qedi_probe(struct pci_dev *pdev, int mode)
2391 {
2392 struct qedi_ctx *qedi;
2393 struct qed_ll2_params params;
2394 u32 dp_module = 0;
2395 u8 dp_level = 0;
2396 bool is_vf = false;
2397 char host_buf[16];
2398 struct qed_link_params link_params;
2399 struct qed_slowpath_params sp_params;
2400 struct qed_probe_params qed_params;
2401 void *task_start, *task_end;
2402 int rc;
2403 u16 tmp;
2404
2405 if (mode != QEDI_MODE_RECOVERY) {
2406 qedi = qedi_host_alloc(pdev);
2407 if (!qedi) {
2408 rc = -ENOMEM;
2409 goto exit_probe;
2410 }
2411 } else {
2412 qedi = pci_get_drvdata(pdev);
2413 }
2414
2415 memset(&qed_params, 0, sizeof(qed_params));
2416 qed_params.protocol = QED_PROTOCOL_ISCSI;
2417 qed_params.dp_module = dp_module;
2418 qed_params.dp_level = dp_level;
2419 qed_params.is_vf = is_vf;
2420 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2421 if (!qedi->cdev) {
2422 rc = -ENODEV;
2423 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2424 goto free_host;
2425 }
2426
2427 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2428
2429 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2430 if (rc)
2431 goto free_host;
2432
2433 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2434 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
2435 qedi->dev_info.common.num_hwfns,
2436 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
2437
2438 if (mode != QEDI_MODE_RECOVERY) {
2439 rc = qedi_set_iscsi_pf_param(qedi);
2440 if (rc) {
2441 rc = -ENOMEM;
2442 QEDI_ERR(&qedi->dbg_ctx,
2443 "Set iSCSI pf param fail\n");
2444 goto free_host;
2445 }
2446 }
2447
2448 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2449
2450 rc = qedi_prepare_fp(qedi);
2451 if (rc) {
2452 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2453 goto free_pf_params;
2454 }
2455
2456 /* Start the Slowpath-process */
2457 memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2458 sp_params.int_mode = QED_INT_MODE_MSIX;
2459 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2460 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2461 sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2462 sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2463 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2464 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2465 if (rc) {
2466 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2467 goto stop_hw;
2468 }
2469
2470 /* update_pf_params needs to be called before and after slowpath
2471 * start
2472 */
2473 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2474
2475 rc = qedi_setup_int(qedi);
2476 if (rc)
2477 goto stop_iscsi_func;
2478
2479 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2480
2481 /* Learn information crucial for qedi to progress */
2482 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2483 if (rc)
2484 goto stop_iscsi_func;
2485
2486 /* Record BDQ producer doorbell addresses */
2487 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2488 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2489 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2490 "BDQ primary_prod=%p secondary_prod=%p.\n",
2491 qedi->bdq_primary_prod,
2492 qedi->bdq_secondary_prod);
2493
2494 /*
2495 * We need to write the number of BDs in the BDQ we've preallocated so
2496 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
2497 * packet arrives.
2498 */
2499 qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2500 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2501 "Writing %d to primary and secondary BDQ doorbell registers.\n",
2502 qedi->bdq_prod_idx);
2503 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2504 tmp = readw(qedi->bdq_primary_prod);
2505 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2506 tmp = readw(qedi->bdq_secondary_prod);
2507
2508 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2509 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2510 qedi->mac);
2511
2512 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2513 qedi_ops->common->set_name(qedi->cdev, host_buf);
2514
2515 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2516
2517 memset(&params, 0, sizeof(params));
2518 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2519 qedi->ll2_mtu = DEF_PATH_MTU;
2520 params.drop_ttl0_packets = 0;
2521 params.rx_vlan_stripping = 1;
2522 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2523
2524 if (mode != QEDI_MODE_RECOVERY) {
2525 /* set up rx path */
2526 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2527 spin_lock_init(&qedi->ll2_lock);
2528 /* start qedi context */
2529 spin_lock_init(&qedi->hba_lock);
2530 spin_lock_init(&qedi->task_idx_lock);
2531 mutex_init(&qedi->stats_lock);
2532 }
2533 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2534 qedi_ops->ll2->start(qedi->cdev, &params);
2535
2536 if (mode != QEDI_MODE_RECOVERY) {
2537 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2538 (void *)qedi,
2539 "qedi_ll2_thread");
2540 }
2541
2542 rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2543 qedi, qedi_iscsi_event_cb);
2544 if (rc) {
2545 rc = -ENODEV;
2546 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2547 goto stop_slowpath;
2548 }
2549
2550 task_start = qedi_get_task_mem(&qedi->tasks, 0);
2551 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2552 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2553 "Task context start=%p, end=%p block_size=%u.\n",
2554 task_start, task_end, qedi->tasks.size);
2555
2556 memset(&link_params, 0, sizeof(link_params));
2557 link_params.link_up = true;
2558 rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2559 if (rc) {
2560 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2561 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2562 }
2563
2564 #ifdef CONFIG_DEBUG_FS
2565 qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops,
2566 qedi_dbg_fops);
2567 #endif
2568 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2569 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2570 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2571 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2572
2573 if (mode == QEDI_MODE_NORMAL) {
2574 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2575 QEDI_ERR(&qedi->dbg_ctx,
2576 "Could not add iscsi host\n");
2577 rc = -ENOMEM;
2578 goto remove_host;
2579 }
2580
2581 /* Allocate uio buffers */
2582 rc = qedi_alloc_uio_rings(qedi);
2583 if (rc) {
2584 QEDI_ERR(&qedi->dbg_ctx,
2585 "UIO alloc ring failed err=%d\n", rc);
2586 goto remove_host;
2587 }
2588
2589 rc = qedi_init_uio(qedi);
2590 if (rc) {
2591 QEDI_ERR(&qedi->dbg_ctx,
2592 "UIO init failed, err=%d\n", rc);
2593 goto free_uio;
2594 }
2595
2596 /* host the array on iscsi_conn */
2597 rc = qedi_setup_cid_que(qedi);
2598 if (rc) {
2599 QEDI_ERR(&qedi->dbg_ctx,
2600 "Could not setup cid que\n");
2601 goto free_uio;
2602 }
2603
2604 rc = qedi_cm_alloc_mem(qedi);
2605 if (rc) {
2606 QEDI_ERR(&qedi->dbg_ctx,
2607 "Could not alloc cm memory\n");
2608 goto free_cid_que;
2609 }
2610
2611 rc = qedi_alloc_itt(qedi);
2612 if (rc) {
2613 QEDI_ERR(&qedi->dbg_ctx,
2614 "Could not alloc itt memory\n");
2615 goto free_cid_que;
2616 }
2617
2618 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2619 qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2620 if (!qedi->tmf_thread) {
2621 QEDI_ERR(&qedi->dbg_ctx,
2622 "Unable to start tmf thread!\n");
2623 rc = -ENODEV;
2624 goto free_cid_que;
2625 }
2626
2627 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2628 qedi->offload_thread = create_workqueue(host_buf);
2629 if (!qedi->offload_thread) {
2630 QEDI_ERR(&qedi->dbg_ctx,
2631 "Unable to start offload thread!\n");
2632 rc = -ENODEV;
2633 goto free_cid_que;
2634 }
2635
2636 /* F/w needs 1st task context memory entry for performance */
2637 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2638 atomic_set(&qedi->num_offloads, 0);
2639
2640 if (qedi_setup_boot_info(qedi))
2641 QEDI_ERR(&qedi->dbg_ctx,
2642 "No iSCSI boot target configured\n");
2643
2644 rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
2645 if (rc)
2646 QEDI_ERR(&qedi->dbg_ctx,
2647 "Failed to send drv state to MFW\n");
2648
2649 }
2650
2651 return 0;
2652
2653 free_cid_que:
2654 qedi_release_cid_que(qedi);
2655 free_uio:
2656 qedi_free_uio(qedi->udev);
2657 remove_host:
2658 #ifdef CONFIG_DEBUG_FS
2659 qedi_dbg_host_exit(&qedi->dbg_ctx);
2660 #endif
2661 iscsi_host_remove(qedi->shost);
2662 stop_iscsi_func:
2663 qedi_ops->stop(qedi->cdev);
2664 stop_slowpath:
2665 qedi_ops->common->slowpath_stop(qedi->cdev);
2666 stop_hw:
2667 qedi_ops->common->remove(qedi->cdev);
2668 free_pf_params:
2669 qedi_free_iscsi_pf_param(qedi);
2670 free_host:
2671 iscsi_host_free(qedi->shost);
2672 exit_probe:
2673 return rc;
2674 }
2675
2676 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2677 {
2678 return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2679 }
2680
2681 static void qedi_remove(struct pci_dev *pdev)
2682 {
2683 __qedi_remove(pdev, QEDI_MODE_NORMAL);
2684 }
2685
2686 static struct pci_device_id qedi_pci_tbl[] = {
2687 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2688 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2689 { 0 },
2690 };
2691 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2692
2693 static enum cpuhp_state qedi_cpuhp_state;
2694
2695 static struct pci_driver qedi_pci_driver = {
2696 .name = QEDI_MODULE_NAME,
2697 .id_table = qedi_pci_tbl,
2698 .probe = qedi_probe,
2699 .remove = qedi_remove,
2700 };
2701
2702 static int __init qedi_init(void)
2703 {
2704 struct qedi_percpu_s *p;
2705 int cpu, rc = 0;
2706
2707 qedi_ops = qed_get_iscsi_ops();
2708 if (!qedi_ops) {
2709 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2710 return -EINVAL;
2711 }
2712
2713 #ifdef CONFIG_DEBUG_FS
2714 qedi_dbg_init("qedi");
2715 #endif
2716
2717 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2718 if (!qedi_scsi_transport) {
2719 QEDI_ERR(NULL, "Could not register qedi transport");
2720 rc = -ENOMEM;
2721 goto exit_qedi_init_1;
2722 }
2723
2724 for_each_possible_cpu(cpu) {
2725 p = &per_cpu(qedi_percpu, cpu);
2726 INIT_LIST_HEAD(&p->work_list);
2727 spin_lock_init(&p->p_work_lock);
2728 p->iothread = NULL;
2729 }
2730
2731 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2732 qedi_cpu_online, qedi_cpu_offline);
2733 if (rc < 0)
2734 goto exit_qedi_init_2;
2735 qedi_cpuhp_state = rc;
2736
2737 rc = pci_register_driver(&qedi_pci_driver);
2738 if (rc) {
2739 QEDI_ERR(NULL, "Failed to register driver\n");
2740 goto exit_qedi_hp;
2741 }
2742
2743 return 0;
2744
2745 exit_qedi_hp:
2746 cpuhp_remove_state(qedi_cpuhp_state);
2747 exit_qedi_init_2:
2748 iscsi_unregister_transport(&qedi_iscsi_transport);
2749 exit_qedi_init_1:
2750 #ifdef CONFIG_DEBUG_FS
2751 qedi_dbg_exit();
2752 #endif
2753 qed_put_iscsi_ops();
2754 return rc;
2755 }
2756
2757 static void __exit qedi_cleanup(void)
2758 {
2759 pci_unregister_driver(&qedi_pci_driver);
2760 cpuhp_remove_state(qedi_cpuhp_state);
2761 iscsi_unregister_transport(&qedi_iscsi_transport);
2762
2763 #ifdef CONFIG_DEBUG_FS
2764 qedi_dbg_exit();
2765 #endif
2766 qed_put_iscsi_ops();
2767 }
2768
2769 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2770 MODULE_LICENSE("GPL");
2771 MODULE_AUTHOR("QLogic Corporation");
2772 MODULE_VERSION(QEDI_MODULE_VERSION);
2773 module_init(qedi_init);
2774 module_exit(qedi_cleanup);
Linux with added FPC-III support