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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
31static uint qedi_qed_debug;
32module_param(qedi_qed_debug, uint, 0644);
33MODULE_PARM_DESC(qedi_qed_debug, " QED debug level 0 (default)");
34
35static uint qedi_fw_debug;
36module_param(qedi_fw_debug, uint, 0644);
37MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
38
39uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
40module_param(qedi_dbg_log, uint, 0644);
41MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
42
43uint qedi_io_tracing;
44module_param(qedi_io_tracing, uint, 0644);
45MODULE_PARM_DESC(qedi_io_tracing,
46 " Enable logging of SCSI requests/completions into trace buffer. (default off).");
47
48static uint qedi_ll2_buf_size = 0x400;
49module_param(qedi_ll2_buf_size, uint, 0644);
50MODULE_PARM_DESC(qedi_ll2_buf_size,
51 "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400.");
52
53static uint qedi_flags_override;
54module_param(qedi_flags_override, uint, 0644);
55MODULE_PARM_DESC(qedi_flags_override, "Disable/Enable MFW error flags bits action.");
56
57const struct qed_iscsi_ops *qedi_ops;
58static struct scsi_transport_template *qedi_scsi_transport;
59static struct pci_driver qedi_pci_driver;
60static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
61static LIST_HEAD(qedi_udev_list);
62
63static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
64static void qedi_free_global_queues(struct qedi_ctx *qedi);
65static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
66static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
67static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
68static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi);
69static void qedi_recovery_handler(struct work_struct *work);
70static void qedi_schedule_hw_err_handler(void *dev,
71 enum qed_hw_err_type err_type);
72
73static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
74{
75 struct qedi_ctx *qedi;
76 struct qedi_endpoint *qedi_ep;
77 struct iscsi_eqe_data *data;
78 int rval = 0;
79
80 if (!context || !fw_handle) {
81 QEDI_ERR(NULL, "Recv event with ctx NULL\n");
82 return -EINVAL;
83 }
84
85 qedi = (struct qedi_ctx *)context;
86 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
87 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
88
89 data = (struct iscsi_eqe_data *)fw_handle;
90 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
91 "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n",
92 data->icid, data->conn_id, data->error_code,
93 data->error_pdu_opcode_reserved);
94
95 qedi_ep = qedi->ep_tbl[data->icid];
96
97 if (!qedi_ep) {
98 QEDI_WARN(&qedi->dbg_ctx,
99 "Cannot process event, ep already disconnected, cid=0x%x\n",
100 data->icid);
101 WARN_ON(1);
102 return -ENODEV;
103 }
104
105 switch (fw_event_code) {
106 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
107 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
108 qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
109
110 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
111 break;
112 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
113 qedi_ep->state = EP_STATE_DISCONN_COMPL;
114 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
115 break;
116 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
117 qedi_process_iscsi_error(qedi_ep, data);
118 break;
119 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
120 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
121 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
122 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
123 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
124 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
125 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
126 qedi_process_tcp_error(qedi_ep, data);
127 break;
128 default:
129 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
130 fw_event_code);
131 }
132
133 return rval;
134}
135
136static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
137{
138 struct qedi_uio_dev *udev = uinfo->priv;
139 struct qedi_ctx *qedi = udev->qedi;
140
141 if (!capable(CAP_NET_ADMIN))
142 return -EPERM;
143
144 if (udev->uio_dev != -1)
145 return -EBUSY;
146
147 rtnl_lock();
148 udev->uio_dev = iminor(inode);
149 qedi_reset_uio_rings(udev);
150 set_bit(UIO_DEV_OPENED, &qedi->flags);
151 rtnl_unlock();
152
153 return 0;
154}
155
156static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
157{
158 struct qedi_uio_dev *udev = uinfo->priv;
159 struct qedi_ctx *qedi = udev->qedi;
160
161 udev->uio_dev = -1;
162 clear_bit(UIO_DEV_OPENED, &qedi->flags);
163 qedi_ll2_free_skbs(qedi);
164 return 0;
165}
166
167static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
168{
169 if (udev->uctrl) {
170 free_page((unsigned long)udev->uctrl);
171 udev->uctrl = NULL;
172 }
173
174 if (udev->ll2_ring) {
175 free_page((unsigned long)udev->ll2_ring);
176 udev->ll2_ring = NULL;
177 }
178
179 if (udev->ll2_buf) {
180 free_pages((unsigned long)udev->ll2_buf, 2);
181 udev->ll2_buf = NULL;
182 }
183}
184
185static void __qedi_free_uio(struct qedi_uio_dev *udev)
186{
187 uio_unregister_device(&udev->qedi_uinfo);
188
189 __qedi_free_uio_rings(udev);
190
191 pci_dev_put(udev->pdev);
192 kfree(udev);
193}
194
195static void qedi_free_uio(struct qedi_uio_dev *udev)
196{
197 if (!udev)
198 return;
199
200 list_del_init(&udev->list);
201 __qedi_free_uio(udev);
202}
203
204static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
205{
206 struct qedi_ctx *qedi = NULL;
207 struct qedi_uio_ctrl *uctrl = NULL;
208
209 qedi = udev->qedi;
210 uctrl = udev->uctrl;
211
212 spin_lock_bh(&qedi->ll2_lock);
213 uctrl->host_rx_cons = 0;
214 uctrl->hw_rx_prod = 0;
215 uctrl->hw_rx_bd_prod = 0;
216 uctrl->host_rx_bd_cons = 0;
217
218 memset(udev->ll2_ring, 0, udev->ll2_ring_size);
219 memset(udev->ll2_buf, 0, udev->ll2_buf_size);
220 spin_unlock_bh(&qedi->ll2_lock);
221}
222
223static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
224{
225 int rc = 0;
226
227 if (udev->ll2_ring || udev->ll2_buf)
228 return rc;
229
230
231 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
232 if (!udev->uctrl)
233 return -ENOMEM;
234
235
236 udev->ll2_ring_size = QEDI_PAGE_SIZE;
237 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
238 if (!udev->ll2_ring) {
239 rc = -ENOMEM;
240 goto exit_alloc_ring;
241 }
242
243
244 udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size;
245 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
246 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
247 __GFP_ZERO, 2);
248 if (!udev->ll2_buf) {
249 rc = -ENOMEM;
250 goto exit_alloc_buf;
251 }
252 return rc;
253
254exit_alloc_buf:
255 free_page((unsigned long)udev->ll2_ring);
256 udev->ll2_ring = NULL;
257exit_alloc_ring:
258 return rc;
259}
260
261static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
262{
263 struct qedi_uio_dev *udev = NULL;
264 int rc = 0;
265
266 list_for_each_entry(udev, &qedi_udev_list, list) {
267 if (udev->pdev == qedi->pdev) {
268 udev->qedi = qedi;
269 if (__qedi_alloc_uio_rings(udev)) {
270 udev->qedi = NULL;
271 return -ENOMEM;
272 }
273 qedi->udev = udev;
274 return 0;
275 }
276 }
277
278 udev = kzalloc(sizeof(*udev), GFP_KERNEL);
279 if (!udev)
280 goto err_udev;
281
282 udev->uio_dev = -1;
283
284 udev->qedi = qedi;
285 udev->pdev = qedi->pdev;
286
287 rc = __qedi_alloc_uio_rings(udev);
288 if (rc)
289 goto err_uctrl;
290
291 list_add(&udev->list, &qedi_udev_list);
292
293 pci_dev_get(udev->pdev);
294 qedi->udev = udev;
295
296 udev->tx_pkt = udev->ll2_buf;
297 udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size;
298 return 0;
299
300 err_uctrl:
301 kfree(udev);
302 err_udev:
303 return -ENOMEM;
304}
305
306static int qedi_init_uio(struct qedi_ctx *qedi)
307{
308 struct qedi_uio_dev *udev = qedi->udev;
309 struct uio_info *uinfo;
310 int ret = 0;
311
312 if (!udev)
313 return -ENOMEM;
314
315 uinfo = &udev->qedi_uinfo;
316
317 uinfo->mem[0].addr = (unsigned long)udev->uctrl;
318 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
319 uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
320
321 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
322 uinfo->mem[1].size = udev->ll2_ring_size;
323 uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
324
325 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
326 uinfo->mem[2].size = udev->ll2_buf_size;
327 uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
328
329 uinfo->name = "qedi_uio";
330 uinfo->version = QEDI_MODULE_VERSION;
331 uinfo->irq = UIO_IRQ_CUSTOM;
332
333 uinfo->open = qedi_uio_open;
334 uinfo->release = qedi_uio_close;
335
336 if (udev->uio_dev == -1) {
337 if (!uinfo->priv) {
338 uinfo->priv = udev;
339
340 ret = uio_register_device(&udev->pdev->dev, uinfo);
341 if (ret) {
342 QEDI_ERR(&qedi->dbg_ctx,
343 "UIO registration failed\n");
344 }
345 }
346 }
347
348 return ret;
349}
350
351static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
352 struct qed_sb_info *sb_info, u16 sb_id)
353{
354 struct status_block *sb_virt;
355 dma_addr_t sb_phys;
356 int ret;
357
358 sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
359 sizeof(struct status_block), &sb_phys,
360 GFP_KERNEL);
361 if (!sb_virt) {
362 QEDI_ERR(&qedi->dbg_ctx,
363 "Status block allocation failed for id = %d.\n",
364 sb_id);
365 return -ENOMEM;
366 }
367
368 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
369 sb_id, QED_SB_TYPE_STORAGE);
370 if (ret) {
371 QEDI_ERR(&qedi->dbg_ctx,
372 "Status block initialization failed for id = %d.\n",
373 sb_id);
374 return ret;
375 }
376
377 return 0;
378}
379
380static void qedi_free_sb(struct qedi_ctx *qedi)
381{
382 struct qed_sb_info *sb_info;
383 int id;
384
385 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
386 sb_info = &qedi->sb_array[id];
387 if (sb_info->sb_virt)
388 dma_free_coherent(&qedi->pdev->dev,
389 sizeof(*sb_info->sb_virt),
390 (void *)sb_info->sb_virt,
391 sb_info->sb_phys);
392 }
393}
394
395static void qedi_free_fp(struct qedi_ctx *qedi)
396{
397 kfree(qedi->fp_array);
398 kfree(qedi->sb_array);
399}
400
401static void qedi_destroy_fp(struct qedi_ctx *qedi)
402{
403 qedi_free_sb(qedi);
404 qedi_free_fp(qedi);
405}
406
407static int qedi_alloc_fp(struct qedi_ctx *qedi)
408{
409 int ret = 0;
410
411 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
412 sizeof(struct qedi_fastpath), GFP_KERNEL);
413 if (!qedi->fp_array) {
414 QEDI_ERR(&qedi->dbg_ctx,
415 "fastpath fp array allocation failed.\n");
416 return -ENOMEM;
417 }
418
419 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
420 sizeof(struct qed_sb_info), GFP_KERNEL);
421 if (!qedi->sb_array) {
422 QEDI_ERR(&qedi->dbg_ctx,
423 "fastpath sb array allocation failed.\n");
424 ret = -ENOMEM;
425 goto free_fp;
426 }
427
428 return ret;
429
430free_fp:
431 qedi_free_fp(qedi);
432 return ret;
433}
434
435static void qedi_int_fp(struct qedi_ctx *qedi)
436{
437 struct qedi_fastpath *fp;
438 int id;
439
440 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
441 sizeof(*qedi->fp_array));
442 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
443 sizeof(*qedi->sb_array));
444
445 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
446 fp = &qedi->fp_array[id];
447 fp->sb_info = &qedi->sb_array[id];
448 fp->sb_id = id;
449 fp->qedi = qedi;
450 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
451 "qedi", id);
452
453
454
455
456 }
457}
458
459static int qedi_prepare_fp(struct qedi_ctx *qedi)
460{
461 struct qedi_fastpath *fp;
462 int id, ret = 0;
463
464 ret = qedi_alloc_fp(qedi);
465 if (ret)
466 goto err;
467
468 qedi_int_fp(qedi);
469
470 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
471 fp = &qedi->fp_array[id];
472 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
473 if (ret) {
474 QEDI_ERR(&qedi->dbg_ctx,
475 "SB allocation and initialization failed.\n");
476 ret = -EIO;
477 goto err_init;
478 }
479 }
480
481 return 0;
482
483err_init:
484 qedi_free_sb(qedi);
485 qedi_free_fp(qedi);
486err:
487 return ret;
488}
489
490static int qedi_setup_cid_que(struct qedi_ctx *qedi)
491{
492 int i;
493
494 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
495 sizeof(u32), GFP_KERNEL);
496 if (!qedi->cid_que.cid_que_base)
497 return -ENOMEM;
498
499 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
500 sizeof(struct qedi_conn *),
501 GFP_KERNEL);
502 if (!qedi->cid_que.conn_cid_tbl) {
503 kfree(qedi->cid_que.cid_que_base);
504 qedi->cid_que.cid_que_base = NULL;
505 return -ENOMEM;
506 }
507
508 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
509 qedi->cid_que.cid_q_prod_idx = 0;
510 qedi->cid_que.cid_q_cons_idx = 0;
511 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
512 qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
513
514 for (i = 0; i < qedi->max_active_conns; i++) {
515 qedi->cid_que.cid_que[i] = i;
516 qedi->cid_que.conn_cid_tbl[i] = NULL;
517 }
518
519 return 0;
520}
521
522static void qedi_release_cid_que(struct qedi_ctx *qedi)
523{
524 kfree(qedi->cid_que.cid_que_base);
525 qedi->cid_que.cid_que_base = NULL;
526
527 kfree(qedi->cid_que.conn_cid_tbl);
528 qedi->cid_que.conn_cid_tbl = NULL;
529}
530
531static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
532 u16 start_id, u16 next)
533{
534 id_tbl->start = start_id;
535 id_tbl->max = size;
536 id_tbl->next = next;
537 spin_lock_init(&id_tbl->lock);
538 id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
539 if (!id_tbl->table)
540 return -ENOMEM;
541
542 return 0;
543}
544
545static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
546{
547 kfree(id_tbl->table);
548 id_tbl->table = NULL;
549}
550
551int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
552{
553 int ret = -1;
554
555 id -= id_tbl->start;
556 if (id >= id_tbl->max)
557 return ret;
558
559 spin_lock(&id_tbl->lock);
560 if (!test_bit(id, id_tbl->table)) {
561 set_bit(id, id_tbl->table);
562 ret = 0;
563 }
564 spin_unlock(&id_tbl->lock);
565 return ret;
566}
567
568u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
569{
570 u16 id;
571
572 spin_lock(&id_tbl->lock);
573 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
574 if (id >= id_tbl->max) {
575 id = QEDI_LOCAL_PORT_INVALID;
576 if (id_tbl->next != 0) {
577 id = find_first_zero_bit(id_tbl->table, id_tbl->next);
578 if (id >= id_tbl->next)
579 id = QEDI_LOCAL_PORT_INVALID;
580 }
581 }
582
583 if (id < id_tbl->max) {
584 set_bit(id, id_tbl->table);
585 id_tbl->next = (id + 1) & (id_tbl->max - 1);
586 id += id_tbl->start;
587 }
588
589 spin_unlock(&id_tbl->lock);
590
591 return id;
592}
593
594void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
595{
596 if (id == QEDI_LOCAL_PORT_INVALID)
597 return;
598
599 id -= id_tbl->start;
600 if (id >= id_tbl->max)
601 return;
602
603 clear_bit(id, id_tbl->table);
604}
605
606static void qedi_cm_free_mem(struct qedi_ctx *qedi)
607{
608 kfree(qedi->ep_tbl);
609 qedi->ep_tbl = NULL;
610 qedi_free_id_tbl(&qedi->lcl_port_tbl);
611}
612
613static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
614{
615 u16 port_id;
616
617 qedi->ep_tbl = kzalloc((qedi->max_active_conns *
618 sizeof(struct qedi_endpoint *)), GFP_KERNEL);
619 if (!qedi->ep_tbl)
620 return -ENOMEM;
621 port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
622 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
623 QEDI_LOCAL_PORT_MIN, port_id)) {
624 qedi_cm_free_mem(qedi);
625 return -ENOMEM;
626 }
627
628 return 0;
629}
630
631static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
632{
633 struct Scsi_Host *shost;
634 struct qedi_ctx *qedi = NULL;
635
636 shost = iscsi_host_alloc(&qedi_host_template,
637 sizeof(struct qedi_ctx), 0);
638 if (!shost) {
639 QEDI_ERR(NULL, "Could not allocate shost\n");
640 goto exit_setup_shost;
641 }
642
643 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1;
644 shost->max_channel = 0;
645 shost->max_lun = ~0;
646 shost->max_cmd_len = 16;
647 shost->transportt = qedi_scsi_transport;
648
649 qedi = iscsi_host_priv(shost);
650 memset(qedi, 0, sizeof(*qedi));
651 qedi->shost = shost;
652 qedi->dbg_ctx.host_no = shost->host_no;
653 qedi->pdev = pdev;
654 qedi->dbg_ctx.pdev = pdev;
655 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
656 qedi->max_sqes = QEDI_SQ_SIZE;
657
658 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
659
660 pci_set_drvdata(pdev, qedi);
661
662exit_setup_shost:
663 return qedi;
664}
665
666static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
667{
668 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
669 struct skb_work_list *work;
670 struct ethhdr *eh;
671
672 if (!qedi) {
673 QEDI_ERR(NULL, "qedi is NULL\n");
674 return -1;
675 }
676
677 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
678 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
679 "UIO DEV is not opened\n");
680 kfree_skb(skb);
681 return 0;
682 }
683
684 eh = (struct ethhdr *)skb->data;
685
686 if (eh->h_proto == htons(ETH_P_8021Q)) {
687 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
688 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
689 skb_reset_mac_header(skb);
690 }
691
692
693 if (eh->h_proto != htons(ETH_P_ARP) &&
694 eh->h_proto != htons(ETH_P_IP) &&
695 eh->h_proto != htons(ETH_P_IPV6)) {
696 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
697 "Dropping frame ethertype [0x%x] len [0x%x].\n",
698 eh->h_proto, skb->len);
699 kfree_skb(skb);
700 return 0;
701 }
702
703 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
704 "Allowed frame ethertype [0x%x] len [0x%x].\n",
705 eh->h_proto, skb->len);
706
707 work = kzalloc(sizeof(*work), GFP_ATOMIC);
708 if (!work) {
709 QEDI_WARN(&qedi->dbg_ctx,
710 "Could not allocate work so dropping frame.\n");
711 kfree_skb(skb);
712 return 0;
713 }
714
715 INIT_LIST_HEAD(&work->list);
716 work->skb = skb;
717
718 if (skb_vlan_tag_present(skb))
719 work->vlan_id = skb_vlan_tag_get(skb);
720
721 if (work->vlan_id)
722 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
723
724 spin_lock_bh(&qedi->ll2_lock);
725 list_add_tail(&work->list, &qedi->ll2_skb_list);
726 spin_unlock_bh(&qedi->ll2_lock);
727
728 wake_up_process(qedi->ll2_recv_thread);
729
730 return 0;
731}
732
733
734static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
735 u16 vlan_id)
736{
737 struct qedi_uio_dev *udev = NULL;
738 struct qedi_uio_ctrl *uctrl = NULL;
739 struct qedi_rx_bd rxbd;
740 struct qedi_rx_bd *p_rxbd;
741 u32 rx_bd_prod;
742 void *pkt;
743 int len = 0;
744 u32 prod;
745
746 if (!qedi) {
747 QEDI_ERR(NULL, "qedi is NULL\n");
748 return -1;
749 }
750
751 udev = qedi->udev;
752 uctrl = udev->uctrl;
753
754 ++uctrl->hw_rx_prod_cnt;
755 prod = (uctrl->hw_rx_prod + 1) % RX_RING;
756
757 pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size);
758 len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size);
759 memcpy(pkt, skb->data, len);
760
761 memset(&rxbd, 0, sizeof(rxbd));
762 rxbd.rx_pkt_index = prod;
763 rxbd.rx_pkt_len = len;
764 rxbd.vlan_id = vlan_id;
765
766 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
767 rx_bd_prod = uctrl->hw_rx_bd_prod;
768 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
769 p_rxbd += rx_bd_prod;
770
771 memcpy(p_rxbd, &rxbd, sizeof(rxbd));
772
773 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
774 "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n",
775 uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod,
776 rxbd.rx_pkt_index, rxbd.rx_pkt_len);
777 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
778 "host_rx_cons [%d] hw_rx_bd_cons [%d].\n",
779 uctrl->host_rx_cons, uctrl->host_rx_bd_cons);
780
781 uctrl->hw_rx_prod = prod;
782
783
784 uio_event_notify(&udev->qedi_uinfo);
785
786 return 0;
787}
788
789static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
790{
791 struct skb_work_list *work, *work_tmp;
792
793 spin_lock_bh(&qedi->ll2_lock);
794 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
795 list_del(&work->list);
796 kfree_skb(work->skb);
797 kfree(work);
798 }
799 spin_unlock_bh(&qedi->ll2_lock);
800}
801
802static int qedi_ll2_recv_thread(void *arg)
803{
804 struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
805 struct skb_work_list *work, *work_tmp;
806
807 set_user_nice(current, -20);
808
809 while (!kthread_should_stop()) {
810 spin_lock_bh(&qedi->ll2_lock);
811 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
812 list) {
813 list_del(&work->list);
814 qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
815 kfree_skb(work->skb);
816 kfree(work);
817 }
818 set_current_state(TASK_INTERRUPTIBLE);
819 spin_unlock_bh(&qedi->ll2_lock);
820 schedule();
821 }
822
823 __set_current_state(TASK_RUNNING);
824 return 0;
825}
826
827static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
828{
829 u8 num_sq_pages;
830 u32 log_page_size;
831 int rval = 0;
832
833
834 num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE;
835
836 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
837
838 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
839 "Number of CQ count is %d\n", qedi->num_queues);
840
841 memset(&qedi->pf_params.iscsi_pf_params, 0,
842 sizeof(qedi->pf_params.iscsi_pf_params));
843
844 qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev,
845 qedi->num_queues * sizeof(struct qedi_glbl_q_params),
846 &qedi->hw_p_cpuq, GFP_KERNEL);
847 if (!qedi->p_cpuq) {
848 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n");
849 rval = -1;
850 goto err_alloc_mem;
851 }
852
853 rval = qedi_alloc_global_queues(qedi);
854 if (rval) {
855 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
856 rval = -1;
857 goto err_alloc_mem;
858 }
859
860 qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
861 qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
862 qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
863 qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
864 qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
865 qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
866 qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
867 qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
868 qedi->pf_params.iscsi_pf_params.two_msl_timer = QED_TWO_MSL_TIMER_DFLT;
869 qedi->pf_params.iscsi_pf_params.tx_sws_timer = QED_TX_SWS_TIMER_DFLT;
870 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
871
872 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
873 if ((1 << log_page_size) == QEDI_PAGE_SIZE)
874 break;
875 }
876 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
877
878 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
879 (u64)qedi->hw_p_cpuq;
880
881
882
883
884
885 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
886
887 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
888 qedi->bdq_pbl_list_dma;
889 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
890 qedi->bdq_pbl_list_num_entries;
891 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
892
893
894 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
895
896 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
897 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
898
899err_alloc_mem:
900 return rval;
901}
902
903
904static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
905{
906 size_t size = 0;
907
908 if (qedi->p_cpuq) {
909 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
910 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq,
911 qedi->hw_p_cpuq);
912 }
913
914 qedi_free_global_queues(qedi);
915
916 kfree(qedi->global_queues);
917}
918
919static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block,
920 struct qedi_boot_target *tgt, u8 index)
921{
922 u32 ipv6_en;
923
924 ipv6_en = !!(block->generic.ctrl_flags &
925 NVM_ISCSI_CFG_GEN_IPV6_ENABLED);
926
927 snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s",
928 block->target[index].target_name.byte);
929
930 tgt->ipv6_en = ipv6_en;
931
932 if (ipv6_en)
933 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n",
934 block->target[index].ipv6_addr.byte);
935 else
936 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n",
937 block->target[index].ipv4_addr.byte);
938}
939
940static int qedi_find_boot_info(struct qedi_ctx *qedi,
941 struct qed_mfw_tlv_iscsi *iscsi,
942 struct nvm_iscsi_block *block)
943{
944 struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL;
945 u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0;
946 struct iscsi_cls_session *cls_sess;
947 struct iscsi_cls_conn *cls_conn;
948 struct qedi_conn *qedi_conn;
949 struct iscsi_session *sess;
950 struct iscsi_conn *conn;
951 char ep_ip_addr[64];
952 int i, ret = 0;
953
954 pri_ctrl_flags = !!(block->target[0].ctrl_flags &
955 NVM_ISCSI_CFG_TARGET_ENABLED);
956 if (pri_ctrl_flags) {
957 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL);
958 if (!pri_tgt)
959 return -1;
960 qedi_get_boot_tgt_info(block, pri_tgt, 0);
961 }
962
963 sec_ctrl_flags = !!(block->target[1].ctrl_flags &
964 NVM_ISCSI_CFG_TARGET_ENABLED);
965 if (sec_ctrl_flags) {
966 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL);
967 if (!sec_tgt) {
968 ret = -1;
969 goto free_tgt;
970 }
971 qedi_get_boot_tgt_info(block, sec_tgt, 1);
972 }
973
974 for (i = 0; i < qedi->max_active_conns; i++) {
975 qedi_conn = qedi_get_conn_from_id(qedi, i);
976 if (!qedi_conn)
977 continue;
978
979 if (qedi_conn->ep->ip_type == TCP_IPV4)
980 snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n",
981 qedi_conn->ep->dst_addr);
982 else
983 snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n",
984 qedi_conn->ep->dst_addr);
985
986 cls_conn = qedi_conn->cls_conn;
987 conn = cls_conn->dd_data;
988 cls_sess = iscsi_conn_to_session(cls_conn);
989 sess = cls_sess->dd_data;
990
991 if (!iscsi_is_session_online(cls_sess))
992 continue;
993
994 if (!sess->targetname)
995 continue;
996
997 if (pri_ctrl_flags) {
998 if (!strcmp(pri_tgt->iscsi_name, sess->targetname) &&
999 !strcmp(pri_tgt->ip_addr, ep_ip_addr)) {
1000 found = 1;
1001 break;
1002 }
1003 }
1004
1005 if (sec_ctrl_flags) {
1006 if (!strcmp(sec_tgt->iscsi_name, sess->targetname) &&
1007 !strcmp(sec_tgt->ip_addr, ep_ip_addr)) {
1008 found = 1;
1009 break;
1010 }
1011 }
1012 }
1013
1014 if (found) {
1015 if (conn->hdrdgst_en) {
1016 iscsi->header_digest_set = true;
1017 iscsi->header_digest = 1;
1018 }
1019
1020 if (conn->datadgst_en) {
1021 iscsi->data_digest_set = true;
1022 iscsi->data_digest = 1;
1023 }
1024 iscsi->boot_taget_portal_set = true;
1025 iscsi->boot_taget_portal = sess->tpgt;
1026
1027 } else {
1028 ret = -1;
1029 }
1030
1031 if (sec_ctrl_flags)
1032 kfree(sec_tgt);
1033free_tgt:
1034 if (pri_ctrl_flags)
1035 kfree(pri_tgt);
1036
1037 return ret;
1038}
1039
1040static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
1041{
1042 struct qedi_ctx *qedi;
1043
1044 if (!dev) {
1045 QEDI_INFO(NULL, QEDI_LOG_EVT,
1046 "dev is NULL so ignoring get_generic_tlv_data request.\n");
1047 return;
1048 }
1049 qedi = (struct qedi_ctx *)dev;
1050
1051 memset(data, 0, sizeof(struct qed_generic_tlvs));
1052 ether_addr_copy(data->mac[0], qedi->mac);
1053}
1054
1055
1056
1057
1058static void qedi_get_protocol_tlv_data(void *dev, void *data)
1059{
1060 struct qed_mfw_tlv_iscsi *iscsi = data;
1061 struct qed_iscsi_stats *fw_iscsi_stats;
1062 struct nvm_iscsi_block *block = NULL;
1063 u32 chap_en = 0, mchap_en = 0;
1064 struct qedi_ctx *qedi = dev;
1065 int rval = 0;
1066
1067 fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL);
1068 if (!fw_iscsi_stats) {
1069 QEDI_ERR(&qedi->dbg_ctx,
1070 "Could not allocate memory for fw_iscsi_stats.\n");
1071 goto exit_get_data;
1072 }
1073
1074 mutex_lock(&qedi->stats_lock);
1075
1076 qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats);
1077 mutex_unlock(&qedi->stats_lock);
1078
1079 iscsi->rx_frames_set = true;
1080 iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt;
1081 iscsi->rx_bytes_set = true;
1082 iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt;
1083 iscsi->tx_frames_set = true;
1084 iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt;
1085 iscsi->tx_bytes_set = true;
1086 iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt;
1087 iscsi->frame_size_set = true;
1088 iscsi->frame_size = qedi->ll2_mtu;
1089 block = qedi_get_nvram_block(qedi);
1090 if (block) {
1091 chap_en = !!(block->generic.ctrl_flags &
1092 NVM_ISCSI_CFG_GEN_CHAP_ENABLED);
1093 mchap_en = !!(block->generic.ctrl_flags &
1094 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED);
1095
1096 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false;
1097 iscsi->auth_method = 1;
1098 if (chap_en)
1099 iscsi->auth_method = 2;
1100 if (mchap_en)
1101 iscsi->auth_method = 3;
1102
1103 iscsi->tx_desc_size_set = true;
1104 iscsi->tx_desc_size = QEDI_SQ_SIZE;
1105 iscsi->rx_desc_size_set = true;
1106 iscsi->rx_desc_size = QEDI_CQ_SIZE;
1107
1108
1109 rval = qedi_find_boot_info(qedi, iscsi, block);
1110 if (rval)
1111 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1112 "Boot target not set");
1113 }
1114
1115 kfree(fw_iscsi_stats);
1116exit_get_data:
1117 return;
1118}
1119
1120void qedi_schedule_hw_err_handler(void *dev,
1121 enum qed_hw_err_type err_type)
1122{
1123 struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1124 unsigned long override_flags = qedi_flags_override;
1125
1126 if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags))
1127 qedi->qedi_err_flags = qedi_flags_override;
1128
1129 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1130 "HW error handler scheduled, err=%d err_flags=0x%x\n",
1131 err_type, qedi->qedi_err_flags);
1132
1133 switch (err_type) {
1134 case QED_HW_ERR_FAN_FAIL:
1135 schedule_delayed_work(&qedi->board_disable_work, 0);
1136 break;
1137 case QED_HW_ERR_MFW_RESP_FAIL:
1138 case QED_HW_ERR_HW_ATTN:
1139 case QED_HW_ERR_DMAE_FAIL:
1140 case QED_HW_ERR_RAMROD_FAIL:
1141 case QED_HW_ERR_FW_ASSERT:
1142
1143 if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags))
1144 qedi_ops->common->attn_clr_enable(qedi->cdev, true);
1145
1146 if (err_type == QED_HW_ERR_RAMROD_FAIL &&
1147 test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags))
1148 qedi_ops->common->recovery_process(qedi->cdev);
1149
1150 break;
1151 default:
1152 break;
1153 }
1154}
1155
1156static void qedi_schedule_recovery_handler(void *dev)
1157{
1158 struct qedi_ctx *qedi = dev;
1159
1160 QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n");
1161
1162 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags))
1163 return;
1164
1165 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1166
1167 schedule_delayed_work(&qedi->recovery_work, 0);
1168}
1169
1170static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session)
1171{
1172 struct iscsi_session *session = cls_session->dd_data;
1173 struct iscsi_conn *conn = session->leadconn;
1174 struct qedi_conn *qedi_conn = conn->dd_data;
1175
1176 qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1177}
1178
1179static void qedi_link_update(void *dev, struct qed_link_output *link)
1180{
1181 struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1182
1183 if (link->link_up) {
1184 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
1185 atomic_set(&qedi->link_state, QEDI_LINK_UP);
1186 } else {
1187 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1188 "Link Down event.\n");
1189 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1190 iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery);
1191 }
1192}
1193
1194static struct qed_iscsi_cb_ops qedi_cb_ops = {
1195 {
1196 .link_update = qedi_link_update,
1197 .schedule_recovery_handler = qedi_schedule_recovery_handler,
1198 .schedule_hw_err_handler = qedi_schedule_hw_err_handler,
1199 .get_protocol_tlv_data = qedi_get_protocol_tlv_data,
1200 .get_generic_tlv_data = qedi_get_generic_tlv_data,
1201 }
1202};
1203
1204static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
1205 u16 que_idx, struct qedi_percpu_s *p)
1206{
1207 struct qedi_work *qedi_work;
1208 struct qedi_conn *q_conn;
1209 struct qedi_cmd *qedi_cmd;
1210 u32 iscsi_cid;
1211 int rc = 0;
1212
1213 iscsi_cid = cqe->cqe_common.conn_id;
1214 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
1215 if (!q_conn) {
1216 QEDI_WARN(&qedi->dbg_ctx,
1217 "Session no longer exists for cid=0x%x!!\n",
1218 iscsi_cid);
1219 return -1;
1220 }
1221
1222 switch (cqe->cqe_common.cqe_type) {
1223 case ISCSI_CQE_TYPE_SOLICITED:
1224 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
1225 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
1226 if (!qedi_cmd) {
1227 rc = -1;
1228 break;
1229 }
1230 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
1231 qedi_cmd->cqe_work.qedi = qedi;
1232 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
1233 qedi_cmd->cqe_work.que_idx = que_idx;
1234 qedi_cmd->cqe_work.is_solicited = true;
1235 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
1236 break;
1237 case ISCSI_CQE_TYPE_UNSOLICITED:
1238 case ISCSI_CQE_TYPE_DUMMY:
1239 case ISCSI_CQE_TYPE_TASK_CLEANUP:
1240 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
1241 if (!qedi_work) {
1242 rc = -1;
1243 break;
1244 }
1245 INIT_LIST_HEAD(&qedi_work->list);
1246 qedi_work->qedi = qedi;
1247 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
1248 qedi_work->que_idx = que_idx;
1249 qedi_work->is_solicited = false;
1250 list_add_tail(&qedi_work->list, &p->work_list);
1251 break;
1252 default:
1253 rc = -1;
1254 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
1255 }
1256 return rc;
1257}
1258
1259static bool qedi_process_completions(struct qedi_fastpath *fp)
1260{
1261 struct qedi_ctx *qedi = fp->qedi;
1262 struct qed_sb_info *sb_info = fp->sb_info;
1263 struct status_block *sb = sb_info->sb_virt;
1264 struct qedi_percpu_s *p = NULL;
1265 struct global_queue *que;
1266 u16 prod_idx;
1267 unsigned long flags;
1268 union iscsi_cqe *cqe;
1269 int cpu;
1270 int ret;
1271
1272
1273 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1274
1275 if (prod_idx >= QEDI_CQ_SIZE)
1276 prod_idx = prod_idx % QEDI_CQ_SIZE;
1277
1278 que = qedi->global_queues[fp->sb_id];
1279 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1280 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
1281 que, prod_idx, que->cq_cons_idx, fp->sb_id);
1282
1283 qedi->intr_cpu = fp->sb_id;
1284 cpu = smp_processor_id();
1285 p = &per_cpu(qedi_percpu, cpu);
1286
1287 if (unlikely(!p->iothread))
1288 WARN_ON(1);
1289
1290 spin_lock_irqsave(&p->p_work_lock, flags);
1291 while (que->cq_cons_idx != prod_idx) {
1292 cqe = &que->cq[que->cq_cons_idx];
1293
1294 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1295 "cqe=%p prod_idx=%d cons_idx=%d.\n",
1296 cqe, prod_idx, que->cq_cons_idx);
1297
1298 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1299 if (ret)
1300 QEDI_WARN(&qedi->dbg_ctx,
1301 "Dropping CQE 0x%x for cid=0x%x.\n",
1302 que->cq_cons_idx, cqe->cqe_common.conn_id);
1303
1304 que->cq_cons_idx++;
1305 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1306 que->cq_cons_idx = 0;
1307 }
1308 wake_up_process(p->iothread);
1309 spin_unlock_irqrestore(&p->p_work_lock, flags);
1310
1311 return true;
1312}
1313
1314static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1315{
1316 struct qedi_ctx *qedi = fp->qedi;
1317 struct global_queue *que;
1318 struct qed_sb_info *sb_info = fp->sb_info;
1319 struct status_block *sb = sb_info->sb_virt;
1320 u16 prod_idx;
1321
1322 barrier();
1323
1324
1325 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1326
1327
1328 que = qedi->global_queues[fp->sb_id];
1329
1330
1331 if (prod_idx >= QEDI_CQ_SIZE)
1332 prod_idx = prod_idx % QEDI_CQ_SIZE;
1333
1334 return (que->cq_cons_idx != prod_idx);
1335}
1336
1337
1338static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1339{
1340 struct qedi_fastpath *fp = dev_id;
1341 struct qedi_ctx *qedi = fp->qedi;
1342 bool wake_io_thread = true;
1343
1344 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1345
1346process_again:
1347 wake_io_thread = qedi_process_completions(fp);
1348 if (wake_io_thread) {
1349 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1350 "process already running\n");
1351 }
1352
1353 if (!qedi_fp_has_work(fp))
1354 qed_sb_update_sb_idx(fp->sb_info);
1355
1356
1357 rmb();
1358
1359 if (!qedi_fp_has_work(fp))
1360 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1361 else
1362 goto process_again;
1363
1364 return IRQ_HANDLED;
1365}
1366
1367
1368static void qedi_simd_int_handler(void *cookie)
1369{
1370
1371 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1372
1373 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1374}
1375
1376#define QEDI_SIMD_HANDLER_NUM 0
1377static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1378{
1379 int i;
1380 u16 idx;
1381
1382 if (qedi->int_info.msix_cnt) {
1383 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1384 idx = i * qedi->dev_info.common.num_hwfns +
1385 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1386
1387 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1388 "Freeing IRQ #%d vector_idx=%d.\n", i, idx);
1389
1390 synchronize_irq(qedi->int_info.msix[idx].vector);
1391 irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1392 NULL);
1393 free_irq(qedi->int_info.msix[idx].vector,
1394 &qedi->fp_array[i]);
1395 }
1396 } else {
1397 qedi_ops->common->simd_handler_clean(qedi->cdev,
1398 QEDI_SIMD_HANDLER_NUM);
1399 }
1400
1401 qedi->int_info.used_cnt = 0;
1402 qedi_ops->common->set_fp_int(qedi->cdev, 0);
1403}
1404
1405static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1406{
1407 int i, rc, cpu;
1408 u16 idx;
1409
1410 cpu = cpumask_first(cpu_online_mask);
1411 for (i = 0; i < qedi->msix_count; i++) {
1412 idx = i * qedi->dev_info.common.num_hwfns +
1413 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1414
1415 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1416 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
1417 qedi->dev_info.common.num_hwfns,
1418 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
1419
1420 rc = request_irq(qedi->int_info.msix[idx].vector,
1421 qedi_msix_handler, 0, "qedi",
1422 &qedi->fp_array[i]);
1423 if (rc) {
1424 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1425 qedi_sync_free_irqs(qedi);
1426 return rc;
1427 }
1428 qedi->int_info.used_cnt++;
1429 rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1430 get_cpu_mask(cpu));
1431 cpu = cpumask_next(cpu, cpu_online_mask);
1432 }
1433
1434 return 0;
1435}
1436
1437static int qedi_setup_int(struct qedi_ctx *qedi)
1438{
1439 int rc = 0;
1440
1441 rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues);
1442 if (rc < 0)
1443 goto exit_setup_int;
1444
1445 qedi->msix_count = rc;
1446
1447 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1448 if (rc)
1449 goto exit_setup_int;
1450
1451 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1452 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1453 qedi->int_info.msix_cnt, num_online_cpus());
1454
1455 if (qedi->int_info.msix_cnt) {
1456 rc = qedi_request_msix_irq(qedi);
1457 goto exit_setup_int;
1458 } else {
1459 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1460 QEDI_SIMD_HANDLER_NUM,
1461 qedi_simd_int_handler);
1462 qedi->int_info.used_cnt = 1;
1463 }
1464
1465exit_setup_int:
1466 return rc;
1467}
1468
1469static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1470{
1471 if (qedi->iscsi_image)
1472 dma_free_coherent(&qedi->pdev->dev,
1473 sizeof(struct qedi_nvm_iscsi_image),
1474 qedi->iscsi_image, qedi->nvm_buf_dma);
1475}
1476
1477static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1478{
1479 qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev,
1480 sizeof(struct qedi_nvm_iscsi_image),
1481 &qedi->nvm_buf_dma, GFP_KERNEL);
1482 if (!qedi->iscsi_image) {
1483 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1484 return -ENOMEM;
1485 }
1486 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1487 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
1488 qedi->nvm_buf_dma);
1489
1490 return 0;
1491}
1492
1493static void qedi_free_bdq(struct qedi_ctx *qedi)
1494{
1495 int i;
1496
1497 if (qedi->bdq_pbl_list)
1498 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
1499 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1500
1501 if (qedi->bdq_pbl)
1502 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1503 qedi->bdq_pbl, qedi->bdq_pbl_dma);
1504
1505 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1506 if (qedi->bdq[i].buf_addr) {
1507 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1508 qedi->bdq[i].buf_addr,
1509 qedi->bdq[i].buf_dma);
1510 }
1511 }
1512}
1513
1514static void qedi_free_global_queues(struct qedi_ctx *qedi)
1515{
1516 int i;
1517 struct global_queue **gl = qedi->global_queues;
1518
1519 for (i = 0; i < qedi->num_queues; i++) {
1520 if (!gl[i])
1521 continue;
1522
1523 if (gl[i]->cq)
1524 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1525 gl[i]->cq, gl[i]->cq_dma);
1526 if (gl[i]->cq_pbl)
1527 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1528 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1529
1530 kfree(gl[i]);
1531 }
1532 qedi_free_bdq(qedi);
1533 qedi_free_nvm_iscsi_cfg(qedi);
1534}
1535
1536static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1537{
1538 int i;
1539 struct scsi_bd *pbl;
1540 u64 *list;
1541
1542
1543 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1544 qedi->bdq[i].buf_addr =
1545 dma_alloc_coherent(&qedi->pdev->dev,
1546 QEDI_BDQ_BUF_SIZE,
1547 &qedi->bdq[i].buf_dma,
1548 GFP_KERNEL);
1549 if (!qedi->bdq[i].buf_addr) {
1550 QEDI_ERR(&qedi->dbg_ctx,
1551 "Could not allocate BDQ buffer %d.\n", i);
1552 return -ENOMEM;
1553 }
1554 }
1555
1556
1557 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
1558 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE);
1559 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1560
1561 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1562 qedi->rq_num_entries);
1563
1564 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1565 qedi->bdq_pbl_mem_size,
1566 &qedi->bdq_pbl_dma, GFP_KERNEL);
1567 if (!qedi->bdq_pbl) {
1568 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1569 return -ENOMEM;
1570 }
1571
1572
1573
1574
1575
1576 pbl = (struct scsi_bd *)qedi->bdq_pbl;
1577 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1578 pbl->address.hi =
1579 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1580 pbl->address.lo =
1581 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1582 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1583 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1584 pbl, pbl->address.hi, pbl->address.lo, i);
1585 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
1586 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
1587 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
1588 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
1589 pbl++;
1590 }
1591
1592
1593 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
1594 QEDI_PAGE_SIZE,
1595 &qedi->bdq_pbl_list_dma,
1596 GFP_KERNEL);
1597 if (!qedi->bdq_pbl_list) {
1598 QEDI_ERR(&qedi->dbg_ctx,
1599 "Could not allocate list of PBL pages.\n");
1600 return -ENOMEM;
1601 }
1602
1603
1604
1605
1606
1607 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
1608 QEDI_PAGE_SIZE;
1609 list = (u64 *)qedi->bdq_pbl_list;
1610 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1611 *list = qedi->bdq_pbl_dma;
1612 list++;
1613 }
1614
1615 return 0;
1616}
1617
1618static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1619{
1620 u32 *list;
1621 int i;
1622 int status;
1623 u32 *pbl;
1624 dma_addr_t page;
1625 int num_pages;
1626
1627
1628
1629
1630
1631 if (!qedi->num_queues) {
1632 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1633 return -ENOMEM;
1634 }
1635
1636
1637
1638
1639 if (!qedi->p_cpuq) {
1640 status = -EINVAL;
1641 goto mem_alloc_failure;
1642 }
1643
1644 qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1645 qedi->num_queues), GFP_KERNEL);
1646 if (!qedi->global_queues) {
1647 QEDI_ERR(&qedi->dbg_ctx,
1648 "Unable to allocate global queues array ptr memory\n");
1649 return -ENOMEM;
1650 }
1651 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1652 "qedi->global_queues=%p.\n", qedi->global_queues);
1653
1654
1655 status = qedi_alloc_bdq(qedi);
1656 if (status)
1657 goto mem_alloc_failure;
1658
1659
1660 status = qedi_alloc_nvm_iscsi_cfg(qedi);
1661 if (status)
1662 goto mem_alloc_failure;
1663
1664
1665
1666
1667 for (i = 0; i < qedi->num_queues; i++) {
1668 qedi->global_queues[i] =
1669 kzalloc(sizeof(*qedi->global_queues[0]),
1670 GFP_KERNEL);
1671 if (!qedi->global_queues[i]) {
1672 QEDI_ERR(&qedi->dbg_ctx,
1673 "Unable to allocation global queue %d.\n", i);
1674 status = -ENOMEM;
1675 goto mem_alloc_failure;
1676 }
1677
1678 qedi->global_queues[i]->cq_mem_size =
1679 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1680 qedi->global_queues[i]->cq_mem_size =
1681 (qedi->global_queues[i]->cq_mem_size +
1682 (QEDI_PAGE_SIZE - 1));
1683
1684 qedi->global_queues[i]->cq_pbl_size =
1685 (qedi->global_queues[i]->cq_mem_size /
1686 QEDI_PAGE_SIZE) * sizeof(void *);
1687 qedi->global_queues[i]->cq_pbl_size =
1688 (qedi->global_queues[i]->cq_pbl_size +
1689 (QEDI_PAGE_SIZE - 1));
1690
1691 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev,
1692 qedi->global_queues[i]->cq_mem_size,
1693 &qedi->global_queues[i]->cq_dma,
1694 GFP_KERNEL);
1695
1696 if (!qedi->global_queues[i]->cq) {
1697 QEDI_WARN(&qedi->dbg_ctx,
1698 "Could not allocate cq.\n");
1699 status = -ENOMEM;
1700 goto mem_alloc_failure;
1701 }
1702 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1703 qedi->global_queues[i]->cq_pbl_size,
1704 &qedi->global_queues[i]->cq_pbl_dma,
1705 GFP_KERNEL);
1706
1707 if (!qedi->global_queues[i]->cq_pbl) {
1708 QEDI_WARN(&qedi->dbg_ctx,
1709 "Could not allocate cq PBL.\n");
1710 status = -ENOMEM;
1711 goto mem_alloc_failure;
1712 }
1713
1714
1715 num_pages = qedi->global_queues[i]->cq_mem_size /
1716 QEDI_PAGE_SIZE;
1717 page = qedi->global_queues[i]->cq_dma;
1718 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1719
1720 while (num_pages--) {
1721 *pbl = (u32)page;
1722 pbl++;
1723 *pbl = (u32)((u64)page >> 32);
1724 pbl++;
1725 page += QEDI_PAGE_SIZE;
1726 }
1727 }
1728
1729 list = (u32 *)qedi->p_cpuq;
1730
1731
1732
1733
1734
1735
1736
1737 for (i = 0; i < qedi->num_queues; i++) {
1738 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1739 list++;
1740 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1741 list++;
1742
1743 *list = (u32)0;
1744 list++;
1745 *list = (u32)((u64)0 >> 32);
1746 list++;
1747 }
1748
1749 return 0;
1750
1751mem_alloc_failure:
1752 qedi_free_global_queues(qedi);
1753 return status;
1754}
1755
1756int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1757{
1758 int rval = 0;
1759 u32 *pbl;
1760 dma_addr_t page;
1761 int num_pages;
1762
1763 if (!ep)
1764 return -EIO;
1765
1766
1767 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1768 ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1769
1770 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1771 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1772
1773 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1774 &ep->sq_dma, GFP_KERNEL);
1775 if (!ep->sq) {
1776 QEDI_WARN(&qedi->dbg_ctx,
1777 "Could not allocate send queue.\n");
1778 rval = -ENOMEM;
1779 goto out;
1780 }
1781 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1782 &ep->sq_pbl_dma, GFP_KERNEL);
1783 if (!ep->sq_pbl) {
1784 QEDI_WARN(&qedi->dbg_ctx,
1785 "Could not allocate send queue PBL.\n");
1786 rval = -ENOMEM;
1787 goto out_free_sq;
1788 }
1789
1790
1791 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1792 page = ep->sq_dma;
1793 pbl = (u32 *)ep->sq_pbl;
1794
1795 while (num_pages--) {
1796 *pbl = (u32)page;
1797 pbl++;
1798 *pbl = (u32)((u64)page >> 32);
1799 pbl++;
1800 page += QEDI_PAGE_SIZE;
1801 }
1802
1803 return rval;
1804
1805out_free_sq:
1806 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1807 ep->sq_dma);
1808out:
1809 return rval;
1810}
1811
1812void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1813{
1814 if (ep->sq_pbl)
1815 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1816 ep->sq_pbl_dma);
1817 if (ep->sq)
1818 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1819 ep->sq_dma);
1820}
1821
1822int qedi_get_task_idx(struct qedi_ctx *qedi)
1823{
1824 s16 tmp_idx;
1825
1826again:
1827 tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1828 MAX_ISCSI_TASK_ENTRIES);
1829
1830 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1831 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1832 tmp_idx = -1;
1833 goto err_idx;
1834 }
1835
1836 if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1837 goto again;
1838
1839err_idx:
1840 return tmp_idx;
1841}
1842
1843void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1844{
1845 if (!test_and_clear_bit(idx, qedi->task_idx_map))
1846 QEDI_ERR(&qedi->dbg_ctx,
1847 "FW task context, already cleared, tid=0x%x\n", idx);
1848}
1849
1850void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1851 struct qedi_cmd *cmd)
1852{
1853 qedi->itt_map[tid].itt = proto_itt;
1854 qedi->itt_map[tid].p_cmd = cmd;
1855
1856 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1857 "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1858 qedi->itt_map[tid].itt);
1859}
1860
1861void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1862{
1863 u16 i;
1864
1865 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1866 if (qedi->itt_map[i].itt == itt) {
1867 *tid = i;
1868 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1869 "Ref itt=0x%x, found at tid=0x%x\n",
1870 itt, *tid);
1871 return;
1872 }
1873 }
1874
1875 WARN_ON(1);
1876}
1877
1878void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1879{
1880 *proto_itt = qedi->itt_map[tid].itt;
1881 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1882 "Get itt map tid [0x%x with proto itt[0x%x]",
1883 tid, *proto_itt);
1884}
1885
1886struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1887{
1888 struct qedi_cmd *cmd = NULL;
1889
1890 if (tid >= MAX_ISCSI_TASK_ENTRIES)
1891 return NULL;
1892
1893 cmd = qedi->itt_map[tid].p_cmd;
1894 if (cmd->task_id != tid)
1895 return NULL;
1896
1897 qedi->itt_map[tid].p_cmd = NULL;
1898
1899 return cmd;
1900}
1901
1902static int qedi_alloc_itt(struct qedi_ctx *qedi)
1903{
1904 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1905 sizeof(struct qedi_itt_map), GFP_KERNEL);
1906 if (!qedi->itt_map) {
1907 QEDI_ERR(&qedi->dbg_ctx,
1908 "Unable to allocate itt map array memory\n");
1909 return -ENOMEM;
1910 }
1911 return 0;
1912}
1913
1914static void qedi_free_itt(struct qedi_ctx *qedi)
1915{
1916 kfree(qedi->itt_map);
1917}
1918
1919static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1920 .rx_cb = qedi_ll2_rx,
1921 .tx_cb = NULL,
1922};
1923
1924static int qedi_percpu_io_thread(void *arg)
1925{
1926 struct qedi_percpu_s *p = arg;
1927 struct qedi_work *work, *tmp;
1928 unsigned long flags;
1929 LIST_HEAD(work_list);
1930
1931 set_user_nice(current, -20);
1932
1933 while (!kthread_should_stop()) {
1934 spin_lock_irqsave(&p->p_work_lock, flags);
1935 while (!list_empty(&p->work_list)) {
1936 list_splice_init(&p->work_list, &work_list);
1937 spin_unlock_irqrestore(&p->p_work_lock, flags);
1938
1939 list_for_each_entry_safe(work, tmp, &work_list, list) {
1940 list_del_init(&work->list);
1941 qedi_fp_process_cqes(work);
1942 if (!work->is_solicited)
1943 kfree(work);
1944 }
1945 cond_resched();
1946 spin_lock_irqsave(&p->p_work_lock, flags);
1947 }
1948 set_current_state(TASK_INTERRUPTIBLE);
1949 spin_unlock_irqrestore(&p->p_work_lock, flags);
1950 schedule();
1951 }
1952 __set_current_state(TASK_RUNNING);
1953
1954 return 0;
1955}
1956
1957static int qedi_cpu_online(unsigned int cpu)
1958{
1959 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1960 struct task_struct *thread;
1961
1962 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1963 cpu_to_node(cpu),
1964 "qedi_thread/%d", cpu);
1965 if (IS_ERR(thread))
1966 return PTR_ERR(thread);
1967
1968 kthread_bind(thread, cpu);
1969 p->iothread = thread;
1970 wake_up_process(thread);
1971 return 0;
1972}
1973
1974static int qedi_cpu_offline(unsigned int cpu)
1975{
1976 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1977 struct qedi_work *work, *tmp;
1978 struct task_struct *thread;
1979
1980 spin_lock_bh(&p->p_work_lock);
1981 thread = p->iothread;
1982 p->iothread = NULL;
1983
1984 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1985 list_del_init(&work->list);
1986 qedi_fp_process_cqes(work);
1987 if (!work->is_solicited)
1988 kfree(work);
1989 }
1990
1991 spin_unlock_bh(&p->p_work_lock);
1992 if (thread)
1993 kthread_stop(thread);
1994 return 0;
1995}
1996
1997void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
1998{
1999 struct qed_ll2_params params;
2000
2001 qedi_recover_all_conns(qedi);
2002
2003 qedi_ops->ll2->stop(qedi->cdev);
2004 qedi_ll2_free_skbs(qedi);
2005
2006 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
2007 qedi->ll2_mtu, mtu);
2008 memset(¶ms, 0, sizeof(params));
2009 qedi->ll2_mtu = mtu;
2010 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
2011 params.drop_ttl0_packets = 0;
2012 params.rx_vlan_stripping = 1;
2013 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2014 qedi_ops->ll2->start(qedi->cdev, ¶ms);
2015}
2016
2017
2018
2019
2020
2021static struct nvm_iscsi_block *
2022qedi_get_nvram_block(struct qedi_ctx *qedi)
2023{
2024 int i;
2025 u8 pf;
2026 u32 flags;
2027 struct nvm_iscsi_block *block;
2028
2029 pf = qedi->dev_info.common.abs_pf_id;
2030 block = &qedi->iscsi_image->iscsi_cfg.block[0];
2031 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
2032 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
2033 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
2034 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
2035 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
2036 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
2037 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
2038 return block;
2039 }
2040 return NULL;
2041}
2042
2043static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
2044{
2045 struct qedi_ctx *qedi = data;
2046 struct nvm_iscsi_initiator *initiator;
2047 int rc = 1;
2048 u32 ipv6_en, dhcp_en, ip_len;
2049 struct nvm_iscsi_block *block;
2050 char *fmt, *ip, *sub, *gw;
2051
2052 block = qedi_get_nvram_block(qedi);
2053 if (!block)
2054 return 0;
2055
2056 initiator = &block->initiator;
2057 ipv6_en = block->generic.ctrl_flags &
2058 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2059 dhcp_en = block->generic.ctrl_flags &
2060 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
2061
2062 fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
2063 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
2064 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2065 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
2066 initiator->ipv4.subnet_mask.byte;
2067 gw = ipv6_en ? initiator->ipv6.gateway.byte :
2068 initiator->ipv4.gateway.byte;
2069
2070 fmt = dhcp_en ? "%s\n" : fmt;
2071 if (dhcp_en) {
2072 ip = ipv6_en ? "0::0" : "0.0.0.0";
2073 sub = ip;
2074 gw = ip;
2075 ip_len = ipv6_en ? 5 : 8;
2076 }
2077
2078 switch (type) {
2079 case ISCSI_BOOT_ETH_IP_ADDR:
2080 rc = snprintf(buf, ip_len, fmt, ip);
2081 break;
2082 case ISCSI_BOOT_ETH_SUBNET_MASK:
2083 rc = snprintf(buf, ip_len, fmt, sub);
2084 break;
2085 case ISCSI_BOOT_ETH_GATEWAY:
2086 rc = snprintf(buf, ip_len, fmt, gw);
2087 break;
2088 case ISCSI_BOOT_ETH_FLAGS:
2089 rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT);
2090 break;
2091 case ISCSI_BOOT_ETH_INDEX:
2092 rc = snprintf(buf, 3, "0\n");
2093 break;
2094 case ISCSI_BOOT_ETH_MAC:
2095 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
2096 break;
2097 case ISCSI_BOOT_ETH_VLAN:
2098 rc = snprintf(buf, 12, "%d\n",
2099 GET_FIELD2(initiator->generic_cont0,
2100 NVM_ISCSI_CFG_INITIATOR_VLAN));
2101 break;
2102 case ISCSI_BOOT_ETH_ORIGIN:
2103 if (dhcp_en)
2104 rc = snprintf(buf, 3, "3\n");
2105 break;
2106 default:
2107 rc = 0;
2108 break;
2109 }
2110
2111 return rc;
2112}
2113
2114static umode_t qedi_eth_get_attr_visibility(void *data, int type)
2115{
2116 int rc = 1;
2117
2118 switch (type) {
2119 case ISCSI_BOOT_ETH_FLAGS:
2120 case ISCSI_BOOT_ETH_MAC:
2121 case ISCSI_BOOT_ETH_INDEX:
2122 case ISCSI_BOOT_ETH_IP_ADDR:
2123 case ISCSI_BOOT_ETH_SUBNET_MASK:
2124 case ISCSI_BOOT_ETH_GATEWAY:
2125 case ISCSI_BOOT_ETH_ORIGIN:
2126 case ISCSI_BOOT_ETH_VLAN:
2127 rc = 0444;
2128 break;
2129 default:
2130 rc = 0;
2131 break;
2132 }
2133 return rc;
2134}
2135
2136static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
2137{
2138 struct qedi_ctx *qedi = data;
2139 struct nvm_iscsi_initiator *initiator;
2140 int rc;
2141 struct nvm_iscsi_block *block;
2142
2143 block = qedi_get_nvram_block(qedi);
2144 if (!block)
2145 return 0;
2146
2147 initiator = &block->initiator;
2148
2149 switch (type) {
2150 case ISCSI_BOOT_INI_INITIATOR_NAME:
2151 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2152 initiator->initiator_name.byte);
2153 break;
2154 default:
2155 rc = 0;
2156 break;
2157 }
2158 return rc;
2159}
2160
2161static umode_t qedi_ini_get_attr_visibility(void *data, int type)
2162{
2163 int rc;
2164
2165 switch (type) {
2166 case ISCSI_BOOT_INI_INITIATOR_NAME:
2167 rc = 0444;
2168 break;
2169 default:
2170 rc = 0;
2171 break;
2172 }
2173 return rc;
2174}
2175
2176static ssize_t
2177qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
2178 char *buf, enum qedi_nvm_tgts idx)
2179{
2180 int rc = 1;
2181 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
2182 struct nvm_iscsi_block *block;
2183 char *chap_name, *chap_secret;
2184 char *mchap_name, *mchap_secret;
2185
2186 block = qedi_get_nvram_block(qedi);
2187 if (!block)
2188 goto exit_show_tgt_info;
2189
2190 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2191 "Port:%d, tgt_idx:%d\n",
2192 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
2193
2194 ctrl_flags = block->target[idx].ctrl_flags &
2195 NVM_ISCSI_CFG_TARGET_ENABLED;
2196
2197 if (!ctrl_flags) {
2198 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2199 "Target disabled\n");
2200 goto exit_show_tgt_info;
2201 }
2202
2203 ipv6_en = block->generic.ctrl_flags &
2204 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2205 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2206 chap_en = block->generic.ctrl_flags &
2207 NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
2208 chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
2209 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
2210
2211 mchap_en = block->generic.ctrl_flags &
2212 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
2213 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
2214 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
2215
2216 switch (type) {
2217 case ISCSI_BOOT_TGT_NAME:
2218 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2219 block->target[idx].target_name.byte);
2220 break;
2221 case ISCSI_BOOT_TGT_IP_ADDR:
2222 if (ipv6_en)
2223 rc = snprintf(buf, ip_len, "%pI6\n",
2224 block->target[idx].ipv6_addr.byte);
2225 else
2226 rc = snprintf(buf, ip_len, "%pI4\n",
2227 block->target[idx].ipv4_addr.byte);
2228 break;
2229 case ISCSI_BOOT_TGT_PORT:
2230 rc = snprintf(buf, 12, "%d\n",
2231 GET_FIELD2(block->target[idx].generic_cont0,
2232 NVM_ISCSI_CFG_TARGET_TCP_PORT));
2233 break;
2234 case ISCSI_BOOT_TGT_LUN:
2235 rc = snprintf(buf, 22, "%.*d\n",
2236 block->target[idx].lun.value[1],
2237 block->target[idx].lun.value[0]);
2238 break;
2239 case ISCSI_BOOT_TGT_CHAP_NAME:
2240 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2241 chap_name);
2242 break;
2243 case ISCSI_BOOT_TGT_CHAP_SECRET:
2244 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2245 chap_secret);
2246 break;
2247 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2248 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2249 mchap_name);
2250 break;
2251 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2252 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2253 mchap_secret);
2254 break;
2255 case ISCSI_BOOT_TGT_FLAGS:
2256 rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT);
2257 break;
2258 case ISCSI_BOOT_TGT_NIC_ASSOC:
2259 rc = snprintf(buf, 3, "0\n");
2260 break;
2261 default:
2262 rc = 0;
2263 break;
2264 }
2265
2266exit_show_tgt_info:
2267 return rc;
2268}
2269
2270static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
2271{
2272 struct qedi_ctx *qedi = data;
2273
2274 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
2275}
2276
2277static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
2278{
2279 struct qedi_ctx *qedi = data;
2280
2281 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
2282}
2283
2284static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
2285{
2286 int rc;
2287
2288 switch (type) {
2289 case ISCSI_BOOT_TGT_NAME:
2290 case ISCSI_BOOT_TGT_IP_ADDR:
2291 case ISCSI_BOOT_TGT_PORT:
2292 case ISCSI_BOOT_TGT_LUN:
2293 case ISCSI_BOOT_TGT_CHAP_NAME:
2294 case ISCSI_BOOT_TGT_CHAP_SECRET:
2295 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2296 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2297 case ISCSI_BOOT_TGT_NIC_ASSOC:
2298 case ISCSI_BOOT_TGT_FLAGS:
2299 rc = 0444;
2300 break;
2301 default:
2302 rc = 0;
2303 break;
2304 }
2305 return rc;
2306}
2307
2308static void qedi_boot_release(void *data)
2309{
2310 struct qedi_ctx *qedi = data;
2311
2312 scsi_host_put(qedi->shost);
2313}
2314
2315static int qedi_get_boot_info(struct qedi_ctx *qedi)
2316{
2317 int ret = 1;
2318
2319 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2320 "Get NVM iSCSI CFG image\n");
2321 ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2322 QED_NVM_IMAGE_ISCSI_CFG,
2323 (char *)qedi->iscsi_image,
2324 sizeof(struct qedi_nvm_iscsi_image));
2325 if (ret)
2326 QEDI_ERR(&qedi->dbg_ctx,
2327 "Could not get NVM image. ret = %d\n", ret);
2328
2329 return ret;
2330}
2331
2332static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2333{
2334 struct iscsi_boot_kobj *boot_kobj;
2335
2336 if (qedi_get_boot_info(qedi))
2337 return -EPERM;
2338
2339 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2340 if (!qedi->boot_kset)
2341 goto kset_free;
2342
2343 if (!scsi_host_get(qedi->shost))
2344 goto kset_free;
2345
2346 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2347 qedi_show_boot_tgt_pri_info,
2348 qedi_tgt_get_attr_visibility,
2349 qedi_boot_release);
2350 if (!boot_kobj)
2351 goto put_host;
2352
2353 if (!scsi_host_get(qedi->shost))
2354 goto kset_free;
2355
2356 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2357 qedi_show_boot_tgt_sec_info,
2358 qedi_tgt_get_attr_visibility,
2359 qedi_boot_release);
2360 if (!boot_kobj)
2361 goto put_host;
2362
2363 if (!scsi_host_get(qedi->shost))
2364 goto kset_free;
2365
2366 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2367 qedi_show_boot_ini_info,
2368 qedi_ini_get_attr_visibility,
2369 qedi_boot_release);
2370 if (!boot_kobj)
2371 goto put_host;
2372
2373 if (!scsi_host_get(qedi->shost))
2374 goto kset_free;
2375
2376 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2377 qedi_show_boot_eth_info,
2378 qedi_eth_get_attr_visibility,
2379 qedi_boot_release);
2380 if (!boot_kobj)
2381 goto put_host;
2382
2383 return 0;
2384
2385put_host:
2386 scsi_host_put(qedi->shost);
2387kset_free:
2388 iscsi_boot_destroy_kset(qedi->boot_kset);
2389 return -ENOMEM;
2390}
2391
2392static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev,
2393 pci_channel_state_t state)
2394{
2395 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2396
2397 QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n",
2398 __func__, state);
2399
2400 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
2401 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2402 "Recovery already in progress.\n");
2403 return PCI_ERS_RESULT_NONE;
2404 }
2405
2406 qedi_ops->common->recovery_process(qedi->cdev);
2407
2408 return PCI_ERS_RESULT_CAN_RECOVER;
2409}
2410
2411static void __qedi_remove(struct pci_dev *pdev, int mode)
2412{
2413 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2414 int rval;
2415 u16 retry = 10;
2416
2417 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2418 iscsi_host_remove(qedi->shost);
2419
2420 if (qedi->tmf_thread) {
2421 flush_workqueue(qedi->tmf_thread);
2422 destroy_workqueue(qedi->tmf_thread);
2423 qedi->tmf_thread = NULL;
2424 }
2425
2426 if (qedi->offload_thread) {
2427 flush_workqueue(qedi->offload_thread);
2428 destroy_workqueue(qedi->offload_thread);
2429 qedi->offload_thread = NULL;
2430 }
2431 }
2432
2433#ifdef CONFIG_DEBUG_FS
2434 qedi_dbg_host_exit(&qedi->dbg_ctx);
2435#endif
2436 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2437 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2438
2439 qedi_sync_free_irqs(qedi);
2440
2441 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2442 while (retry--) {
2443 rval = qedi_ops->stop(qedi->cdev);
2444 if (rval < 0)
2445 msleep(1000);
2446 else
2447 break;
2448 }
2449 qedi_ops->ll2->stop(qedi->cdev);
2450 }
2451
2452 qedi_free_iscsi_pf_param(qedi);
2453
2454 rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
2455 if (rval)
2456 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
2457
2458 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2459 qedi_ops->common->slowpath_stop(qedi->cdev);
2460 qedi_ops->common->remove(qedi->cdev);
2461 }
2462
2463 qedi_destroy_fp(qedi);
2464
2465 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2466 qedi_release_cid_que(qedi);
2467 qedi_cm_free_mem(qedi);
2468 qedi_free_uio(qedi->udev);
2469 qedi_free_itt(qedi);
2470
2471 if (qedi->ll2_recv_thread) {
2472 kthread_stop(qedi->ll2_recv_thread);
2473 qedi->ll2_recv_thread = NULL;
2474 }
2475 qedi_ll2_free_skbs(qedi);
2476
2477 if (qedi->boot_kset)
2478 iscsi_boot_destroy_kset(qedi->boot_kset);
2479
2480 iscsi_host_free(qedi->shost);
2481 }
2482}
2483
2484static void qedi_board_disable_work(struct work_struct *work)
2485{
2486 struct qedi_ctx *qedi =
2487 container_of(work, struct qedi_ctx,
2488 board_disable_work.work);
2489
2490 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2491 "Fan failure, Unloading firmware context.\n");
2492
2493 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2494 return;
2495
2496 __qedi_remove(qedi->pdev, QEDI_MODE_SHUTDOWN);
2497}
2498
2499static void qedi_shutdown(struct pci_dev *pdev)
2500{
2501 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2502
2503 QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__);
2504 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2505 return;
2506 __qedi_remove(pdev, QEDI_MODE_SHUTDOWN);
2507}
2508
2509static int __qedi_probe(struct pci_dev *pdev, int mode)
2510{
2511 struct qedi_ctx *qedi;
2512 struct qed_ll2_params params;
2513 u8 dp_level = 0;
2514 bool is_vf = false;
2515 char host_buf[16];
2516 struct qed_link_params link_params;
2517 struct qed_slowpath_params sp_params;
2518 struct qed_probe_params qed_params;
2519 void *task_start, *task_end;
2520 int rc;
2521 u16 retry = 10;
2522
2523 if (mode != QEDI_MODE_RECOVERY) {
2524 qedi = qedi_host_alloc(pdev);
2525 if (!qedi) {
2526 rc = -ENOMEM;
2527 goto exit_probe;
2528 }
2529 } else {
2530 qedi = pci_get_drvdata(pdev);
2531 }
2532
2533retry_probe:
2534 if (mode == QEDI_MODE_RECOVERY)
2535 msleep(2000);
2536
2537 memset(&qed_params, 0, sizeof(qed_params));
2538 qed_params.protocol = QED_PROTOCOL_ISCSI;
2539 qed_params.dp_module = qedi_qed_debug;
2540 qed_params.dp_level = dp_level;
2541 qed_params.is_vf = is_vf;
2542 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2543 if (!qedi->cdev) {
2544 if (mode == QEDI_MODE_RECOVERY && retry) {
2545 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2546 "Retry %d initialize hardware\n", retry);
2547 retry--;
2548 goto retry_probe;
2549 }
2550
2551 rc = -ENODEV;
2552 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2553 goto free_host;
2554 }
2555
2556 set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags);
2557 set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags);
2558 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2559
2560 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2561 if (rc)
2562 goto free_host;
2563
2564 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2565 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
2566 qedi->dev_info.common.num_hwfns,
2567 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
2568
2569 rc = qedi_set_iscsi_pf_param(qedi);
2570 if (rc) {
2571 rc = -ENOMEM;
2572 QEDI_ERR(&qedi->dbg_ctx,
2573 "Set iSCSI pf param fail\n");
2574 goto free_host;
2575 }
2576
2577 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2578
2579 rc = qedi_prepare_fp(qedi);
2580 if (rc) {
2581 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2582 goto free_pf_params;
2583 }
2584
2585
2586 memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2587 sp_params.int_mode = QED_INT_MODE_MSIX;
2588 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2589 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2590 sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2591 sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2592 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2593 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2594 if (rc) {
2595 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2596 goto stop_hw;
2597 }
2598
2599
2600
2601
2602 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2603
2604 rc = qedi_setup_int(qedi);
2605 if (rc)
2606 goto stop_iscsi_func;
2607
2608 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2609
2610
2611 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2612 if (rc)
2613 goto stop_iscsi_func;
2614
2615
2616 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2617 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2618 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2619 "BDQ primary_prod=%p secondary_prod=%p.\n",
2620 qedi->bdq_primary_prod,
2621 qedi->bdq_secondary_prod);
2622
2623
2624
2625
2626
2627
2628 qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2629 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2630 "Writing %d to primary and secondary BDQ doorbell registers.\n",
2631 qedi->bdq_prod_idx);
2632 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2633 readw(qedi->bdq_primary_prod);
2634 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2635 readw(qedi->bdq_secondary_prod);
2636
2637 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2638 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2639 qedi->mac);
2640
2641 snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no);
2642 qedi_ops->common->set_name(qedi->cdev, host_buf);
2643
2644 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2645
2646 memset(¶ms, 0, sizeof(params));
2647 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2648 qedi->ll2_mtu = DEF_PATH_MTU;
2649 params.drop_ttl0_packets = 0;
2650 params.rx_vlan_stripping = 1;
2651 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2652
2653 if (mode != QEDI_MODE_RECOVERY) {
2654
2655 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2656 spin_lock_init(&qedi->ll2_lock);
2657
2658 spin_lock_init(&qedi->hba_lock);
2659 spin_lock_init(&qedi->task_idx_lock);
2660 mutex_init(&qedi->stats_lock);
2661 }
2662 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2663 qedi_ops->ll2->start(qedi->cdev, ¶ms);
2664
2665 if (mode != QEDI_MODE_RECOVERY) {
2666 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2667 (void *)qedi,
2668 "qedi_ll2_thread");
2669 }
2670
2671 rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2672 qedi, qedi_iscsi_event_cb);
2673 if (rc) {
2674 rc = -ENODEV;
2675 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2676 goto stop_slowpath;
2677 }
2678
2679 task_start = qedi_get_task_mem(&qedi->tasks, 0);
2680 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2681 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2682 "Task context start=%p, end=%p block_size=%u.\n",
2683 task_start, task_end, qedi->tasks.size);
2684
2685 memset(&link_params, 0, sizeof(link_params));
2686 link_params.link_up = true;
2687 rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2688 if (rc) {
2689 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2690 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2691 }
2692
2693#ifdef CONFIG_DEBUG_FS
2694 qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops,
2695 qedi_dbg_fops);
2696#endif
2697 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2698 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2699 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2700 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2701
2702 if (mode == QEDI_MODE_NORMAL) {
2703 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2704 QEDI_ERR(&qedi->dbg_ctx,
2705 "Could not add iscsi host\n");
2706 rc = -ENOMEM;
2707 goto remove_host;
2708 }
2709
2710
2711 rc = qedi_alloc_uio_rings(qedi);
2712 if (rc) {
2713 QEDI_ERR(&qedi->dbg_ctx,
2714 "UIO alloc ring failed err=%d\n", rc);
2715 goto remove_host;
2716 }
2717
2718 rc = qedi_init_uio(qedi);
2719 if (rc) {
2720 QEDI_ERR(&qedi->dbg_ctx,
2721 "UIO init failed, err=%d\n", rc);
2722 goto free_uio;
2723 }
2724
2725
2726 rc = qedi_setup_cid_que(qedi);
2727 if (rc) {
2728 QEDI_ERR(&qedi->dbg_ctx,
2729 "Could not setup cid que\n");
2730 goto free_uio;
2731 }
2732
2733 rc = qedi_cm_alloc_mem(qedi);
2734 if (rc) {
2735 QEDI_ERR(&qedi->dbg_ctx,
2736 "Could not alloc cm memory\n");
2737 goto free_cid_que;
2738 }
2739
2740 rc = qedi_alloc_itt(qedi);
2741 if (rc) {
2742 QEDI_ERR(&qedi->dbg_ctx,
2743 "Could not alloc itt memory\n");
2744 goto free_cid_que;
2745 }
2746
2747 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2748 qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2749 if (!qedi->tmf_thread) {
2750 QEDI_ERR(&qedi->dbg_ctx,
2751 "Unable to start tmf thread!\n");
2752 rc = -ENODEV;
2753 goto free_cid_que;
2754 }
2755
2756 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2757 qedi->offload_thread = create_workqueue(host_buf);
2758 if (!qedi->offload_thread) {
2759 QEDI_ERR(&qedi->dbg_ctx,
2760 "Unable to start offload thread!\n");
2761 rc = -ENODEV;
2762 goto free_tmf_thread;
2763 }
2764
2765 INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler);
2766 INIT_DELAYED_WORK(&qedi->board_disable_work,
2767 qedi_board_disable_work);
2768
2769
2770 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2771 atomic_set(&qedi->num_offloads, 0);
2772
2773 if (qedi_setup_boot_info(qedi))
2774 QEDI_ERR(&qedi->dbg_ctx,
2775 "No iSCSI boot target configured\n");
2776
2777 rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
2778 if (rc)
2779 QEDI_ERR(&qedi->dbg_ctx,
2780 "Failed to send drv state to MFW\n");
2781
2782 }
2783
2784 return 0;
2785
2786free_tmf_thread:
2787 destroy_workqueue(qedi->tmf_thread);
2788free_cid_que:
2789 qedi_release_cid_que(qedi);
2790free_uio:
2791 qedi_free_uio(qedi->udev);
2792remove_host:
2793#ifdef CONFIG_DEBUG_FS
2794 qedi_dbg_host_exit(&qedi->dbg_ctx);
2795#endif
2796 iscsi_host_remove(qedi->shost);
2797stop_iscsi_func:
2798 qedi_ops->stop(qedi->cdev);
2799stop_slowpath:
2800 qedi_ops->common->slowpath_stop(qedi->cdev);
2801stop_hw:
2802 qedi_ops->common->remove(qedi->cdev);
2803free_pf_params:
2804 qedi_free_iscsi_pf_param(qedi);
2805free_host:
2806 iscsi_host_free(qedi->shost);
2807exit_probe:
2808 return rc;
2809}
2810
2811static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session)
2812{
2813 struct iscsi_session *session = cls_session->dd_data;
2814 struct iscsi_conn *conn = session->leadconn;
2815 struct qedi_conn *qedi_conn = conn->dd_data;
2816
2817 iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED);
2818}
2819
2820static void qedi_recovery_handler(struct work_struct *work)
2821{
2822 struct qedi_ctx *qedi =
2823 container_of(work, struct qedi_ctx, recovery_work.work);
2824
2825 iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery);
2826
2827
2828
2829
2830 qedi_ops->common->recovery_prolog(qedi->cdev);
2831
2832 __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY);
2833 __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY);
2834 clear_bit(QEDI_IN_RECOVERY, &qedi->flags);
2835}
2836
2837static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2838{
2839 return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2840}
2841
2842static void qedi_remove(struct pci_dev *pdev)
2843{
2844 __qedi_remove(pdev, QEDI_MODE_NORMAL);
2845}
2846
2847static struct pci_device_id qedi_pci_tbl[] = {
2848 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2849 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2850 { 0 },
2851};
2852MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2853
2854static enum cpuhp_state qedi_cpuhp_state;
2855
2856static struct pci_error_handlers qedi_err_handler = {
2857 .error_detected = qedi_io_error_detected,
2858};
2859
2860static struct pci_driver qedi_pci_driver = {
2861 .name = QEDI_MODULE_NAME,
2862 .id_table = qedi_pci_tbl,
2863 .probe = qedi_probe,
2864 .remove = qedi_remove,
2865 .shutdown = qedi_shutdown,
2866 .err_handler = &qedi_err_handler,
2867};
2868
2869static int __init qedi_init(void)
2870{
2871 struct qedi_percpu_s *p;
2872 int cpu, rc = 0;
2873
2874 qedi_ops = qed_get_iscsi_ops();
2875 if (!qedi_ops) {
2876 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2877 return -EINVAL;
2878 }
2879
2880#ifdef CONFIG_DEBUG_FS
2881 qedi_dbg_init("qedi");
2882#endif
2883
2884 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2885 if (!qedi_scsi_transport) {
2886 QEDI_ERR(NULL, "Could not register qedi transport");
2887 rc = -ENOMEM;
2888 goto exit_qedi_init_1;
2889 }
2890
2891 for_each_possible_cpu(cpu) {
2892 p = &per_cpu(qedi_percpu, cpu);
2893 INIT_LIST_HEAD(&p->work_list);
2894 spin_lock_init(&p->p_work_lock);
2895 p->iothread = NULL;
2896 }
2897
2898 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2899 qedi_cpu_online, qedi_cpu_offline);
2900 if (rc < 0)
2901 goto exit_qedi_init_2;
2902 qedi_cpuhp_state = rc;
2903
2904 rc = pci_register_driver(&qedi_pci_driver);
2905 if (rc) {
2906 QEDI_ERR(NULL, "Failed to register driver\n");
2907 goto exit_qedi_hp;
2908 }
2909
2910 return 0;
2911
2912exit_qedi_hp:
2913 cpuhp_remove_state(qedi_cpuhp_state);
2914exit_qedi_init_2:
2915 iscsi_unregister_transport(&qedi_iscsi_transport);
2916exit_qedi_init_1:
2917#ifdef CONFIG_DEBUG_FS
2918 qedi_dbg_exit();
2919#endif
2920 qed_put_iscsi_ops();
2921 return rc;
2922}
2923
2924static void __exit qedi_cleanup(void)
2925{
2926 pci_unregister_driver(&qedi_pci_driver);
2927 cpuhp_remove_state(qedi_cpuhp_state);
2928 iscsi_unregister_transport(&qedi_iscsi_transport);
2929
2930#ifdef CONFIG_DEBUG_FS
2931 qedi_dbg_exit();
2932#endif
2933 qed_put_iscsi_ops();
2934}
2935
2936MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2937MODULE_LICENSE("GPL");
2938MODULE_AUTHOR("QLogic Corporation");
2939MODULE_VERSION(QEDI_MODULE_VERSION);
2940module_init(qedi_init);
2941module_exit(qedi_cleanup);
2942
