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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_e4 *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_e4), &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 = 4000;
869 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
870
871 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
872 if ((1 << log_page_size) == QEDI_PAGE_SIZE)
873 break;
874 }
875 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
876
877 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
878 (u64)qedi->hw_p_cpuq;
879
880
881
882
883
884 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
885
886 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
887 qedi->bdq_pbl_list_dma;
888 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
889 qedi->bdq_pbl_list_num_entries;
890 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
891
892
893 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
894
895 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
896 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
897
898err_alloc_mem:
899 return rval;
900}
901
902
903static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
904{
905 size_t size = 0;
906
907 if (qedi->p_cpuq) {
908 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
909 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq,
910 qedi->hw_p_cpuq);
911 }
912
913 qedi_free_global_queues(qedi);
914
915 kfree(qedi->global_queues);
916}
917
918static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block,
919 struct qedi_boot_target *tgt, u8 index)
920{
921 u32 ipv6_en;
922
923 ipv6_en = !!(block->generic.ctrl_flags &
924 NVM_ISCSI_CFG_GEN_IPV6_ENABLED);
925
926 snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s",
927 block->target[index].target_name.byte);
928
929 tgt->ipv6_en = ipv6_en;
930
931 if (ipv6_en)
932 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n",
933 block->target[index].ipv6_addr.byte);
934 else
935 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n",
936 block->target[index].ipv4_addr.byte);
937}
938
939static int qedi_find_boot_info(struct qedi_ctx *qedi,
940 struct qed_mfw_tlv_iscsi *iscsi,
941 struct nvm_iscsi_block *block)
942{
943 struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL;
944 u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0;
945 struct iscsi_cls_session *cls_sess;
946 struct iscsi_cls_conn *cls_conn;
947 struct qedi_conn *qedi_conn;
948 struct iscsi_session *sess;
949 struct iscsi_conn *conn;
950 char ep_ip_addr[64];
951 int i, ret = 0;
952
953 pri_ctrl_flags = !!(block->target[0].ctrl_flags &
954 NVM_ISCSI_CFG_TARGET_ENABLED);
955 if (pri_ctrl_flags) {
956 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL);
957 if (!pri_tgt)
958 return -1;
959 qedi_get_boot_tgt_info(block, pri_tgt, 0);
960 }
961
962 sec_ctrl_flags = !!(block->target[1].ctrl_flags &
963 NVM_ISCSI_CFG_TARGET_ENABLED);
964 if (sec_ctrl_flags) {
965 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL);
966 if (!sec_tgt) {
967 ret = -1;
968 goto free_tgt;
969 }
970 qedi_get_boot_tgt_info(block, sec_tgt, 1);
971 }
972
973 for (i = 0; i < qedi->max_active_conns; i++) {
974 qedi_conn = qedi_get_conn_from_id(qedi, i);
975 if (!qedi_conn)
976 continue;
977
978 if (qedi_conn->ep->ip_type == TCP_IPV4)
979 snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n",
980 qedi_conn->ep->dst_addr);
981 else
982 snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n",
983 qedi_conn->ep->dst_addr);
984
985 cls_conn = qedi_conn->cls_conn;
986 conn = cls_conn->dd_data;
987 cls_sess = iscsi_conn_to_session(cls_conn);
988 sess = cls_sess->dd_data;
989
990 if (!iscsi_is_session_online(cls_sess))
991 continue;
992
993 if (!sess->targetname)
994 continue;
995
996 if (pri_ctrl_flags) {
997 if (!strcmp(pri_tgt->iscsi_name, sess->targetname) &&
998 !strcmp(pri_tgt->ip_addr, ep_ip_addr)) {
999 found = 1;
1000 break;
1001 }
1002 }
1003
1004 if (sec_ctrl_flags) {
1005 if (!strcmp(sec_tgt->iscsi_name, sess->targetname) &&
1006 !strcmp(sec_tgt->ip_addr, ep_ip_addr)) {
1007 found = 1;
1008 break;
1009 }
1010 }
1011 }
1012
1013 if (found) {
1014 if (conn->hdrdgst_en) {
1015 iscsi->header_digest_set = true;
1016 iscsi->header_digest = 1;
1017 }
1018
1019 if (conn->datadgst_en) {
1020 iscsi->data_digest_set = true;
1021 iscsi->data_digest = 1;
1022 }
1023 iscsi->boot_taget_portal_set = true;
1024 iscsi->boot_taget_portal = sess->tpgt;
1025
1026 } else {
1027 ret = -1;
1028 }
1029
1030 if (sec_ctrl_flags)
1031 kfree(sec_tgt);
1032free_tgt:
1033 if (pri_ctrl_flags)
1034 kfree(pri_tgt);
1035
1036 return ret;
1037}
1038
1039static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
1040{
1041 struct qedi_ctx *qedi;
1042
1043 if (!dev) {
1044 QEDI_INFO(NULL, QEDI_LOG_EVT,
1045 "dev is NULL so ignoring get_generic_tlv_data request.\n");
1046 return;
1047 }
1048 qedi = (struct qedi_ctx *)dev;
1049
1050 memset(data, 0, sizeof(struct qed_generic_tlvs));
1051 ether_addr_copy(data->mac[0], qedi->mac);
1052}
1053
1054
1055
1056
1057static void qedi_get_protocol_tlv_data(void *dev, void *data)
1058{
1059 struct qed_mfw_tlv_iscsi *iscsi = data;
1060 struct qed_iscsi_stats *fw_iscsi_stats;
1061 struct nvm_iscsi_block *block = NULL;
1062 u32 chap_en = 0, mchap_en = 0;
1063 struct qedi_ctx *qedi = dev;
1064 int rval = 0;
1065
1066 fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL);
1067 if (!fw_iscsi_stats) {
1068 QEDI_ERR(&qedi->dbg_ctx,
1069 "Could not allocate memory for fw_iscsi_stats.\n");
1070 goto exit_get_data;
1071 }
1072
1073 mutex_lock(&qedi->stats_lock);
1074
1075 qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats);
1076 mutex_unlock(&qedi->stats_lock);
1077
1078 iscsi->rx_frames_set = true;
1079 iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt;
1080 iscsi->rx_bytes_set = true;
1081 iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt;
1082 iscsi->tx_frames_set = true;
1083 iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt;
1084 iscsi->tx_bytes_set = true;
1085 iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt;
1086 iscsi->frame_size_set = true;
1087 iscsi->frame_size = qedi->ll2_mtu;
1088 block = qedi_get_nvram_block(qedi);
1089 if (block) {
1090 chap_en = !!(block->generic.ctrl_flags &
1091 NVM_ISCSI_CFG_GEN_CHAP_ENABLED);
1092 mchap_en = !!(block->generic.ctrl_flags &
1093 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED);
1094
1095 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false;
1096 iscsi->auth_method = 1;
1097 if (chap_en)
1098 iscsi->auth_method = 2;
1099 if (mchap_en)
1100 iscsi->auth_method = 3;
1101
1102 iscsi->tx_desc_size_set = true;
1103 iscsi->tx_desc_size = QEDI_SQ_SIZE;
1104 iscsi->rx_desc_size_set = true;
1105 iscsi->rx_desc_size = QEDI_CQ_SIZE;
1106
1107
1108 rval = qedi_find_boot_info(qedi, iscsi, block);
1109 if (rval)
1110 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1111 "Boot target not set");
1112 }
1113
1114 kfree(fw_iscsi_stats);
1115exit_get_data:
1116 return;
1117}
1118
1119void qedi_schedule_hw_err_handler(void *dev,
1120 enum qed_hw_err_type err_type)
1121{
1122 struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1123 unsigned long override_flags = qedi_flags_override;
1124
1125 if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags))
1126 qedi->qedi_err_flags = qedi_flags_override;
1127
1128 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1129 "HW error handler scheduled, err=%d err_flags=0x%x\n",
1130 err_type, qedi->qedi_err_flags);
1131
1132 switch (err_type) {
1133 case QED_HW_ERR_FAN_FAIL:
1134 schedule_delayed_work(&qedi->board_disable_work, 0);
1135 break;
1136 case QED_HW_ERR_MFW_RESP_FAIL:
1137 case QED_HW_ERR_HW_ATTN:
1138 case QED_HW_ERR_DMAE_FAIL:
1139 case QED_HW_ERR_RAMROD_FAIL:
1140 case QED_HW_ERR_FW_ASSERT:
1141
1142 if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags))
1143 qedi_ops->common->attn_clr_enable(qedi->cdev, true);
1144
1145 if (err_type == QED_HW_ERR_RAMROD_FAIL &&
1146 test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags))
1147 qedi_ops->common->recovery_process(qedi->cdev);
1148
1149 break;
1150 default:
1151 break;
1152 }
1153}
1154
1155static void qedi_schedule_recovery_handler(void *dev)
1156{
1157 struct qedi_ctx *qedi = dev;
1158
1159 QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n");
1160
1161 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags))
1162 return;
1163
1164 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1165
1166 schedule_delayed_work(&qedi->recovery_work, 0);
1167}
1168
1169static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session)
1170{
1171 struct iscsi_session *session = cls_session->dd_data;
1172 struct iscsi_conn *conn = session->leadconn;
1173 struct qedi_conn *qedi_conn = conn->dd_data;
1174
1175 qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1176}
1177
1178static void qedi_link_update(void *dev, struct qed_link_output *link)
1179{
1180 struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1181
1182 if (link->link_up) {
1183 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
1184 atomic_set(&qedi->link_state, QEDI_LINK_UP);
1185 } else {
1186 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1187 "Link Down event.\n");
1188 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1189 iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery);
1190 }
1191}
1192
1193static struct qed_iscsi_cb_ops qedi_cb_ops = {
1194 {
1195 .link_update = qedi_link_update,
1196 .schedule_recovery_handler = qedi_schedule_recovery_handler,
1197 .schedule_hw_err_handler = qedi_schedule_hw_err_handler,
1198 .get_protocol_tlv_data = qedi_get_protocol_tlv_data,
1199 .get_generic_tlv_data = qedi_get_generic_tlv_data,
1200 }
1201};
1202
1203static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
1204 u16 que_idx, struct qedi_percpu_s *p)
1205{
1206 struct qedi_work *qedi_work;
1207 struct qedi_conn *q_conn;
1208 struct qedi_cmd *qedi_cmd;
1209 u32 iscsi_cid;
1210 int rc = 0;
1211
1212 iscsi_cid = cqe->cqe_common.conn_id;
1213 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
1214 if (!q_conn) {
1215 QEDI_WARN(&qedi->dbg_ctx,
1216 "Session no longer exists for cid=0x%x!!\n",
1217 iscsi_cid);
1218 return -1;
1219 }
1220
1221 switch (cqe->cqe_common.cqe_type) {
1222 case ISCSI_CQE_TYPE_SOLICITED:
1223 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
1224 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
1225 if (!qedi_cmd) {
1226 rc = -1;
1227 break;
1228 }
1229 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
1230 qedi_cmd->cqe_work.qedi = qedi;
1231 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
1232 qedi_cmd->cqe_work.que_idx = que_idx;
1233 qedi_cmd->cqe_work.is_solicited = true;
1234 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
1235 break;
1236 case ISCSI_CQE_TYPE_UNSOLICITED:
1237 case ISCSI_CQE_TYPE_DUMMY:
1238 case ISCSI_CQE_TYPE_TASK_CLEANUP:
1239 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
1240 if (!qedi_work) {
1241 rc = -1;
1242 break;
1243 }
1244 INIT_LIST_HEAD(&qedi_work->list);
1245 qedi_work->qedi = qedi;
1246 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
1247 qedi_work->que_idx = que_idx;
1248 qedi_work->is_solicited = false;
1249 list_add_tail(&qedi_work->list, &p->work_list);
1250 break;
1251 default:
1252 rc = -1;
1253 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
1254 }
1255 return rc;
1256}
1257
1258static bool qedi_process_completions(struct qedi_fastpath *fp)
1259{
1260 struct qedi_ctx *qedi = fp->qedi;
1261 struct qed_sb_info *sb_info = fp->sb_info;
1262 struct status_block_e4 *sb = sb_info->sb_virt;
1263 struct qedi_percpu_s *p = NULL;
1264 struct global_queue *que;
1265 u16 prod_idx;
1266 unsigned long flags;
1267 union iscsi_cqe *cqe;
1268 int cpu;
1269 int ret;
1270
1271
1272 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1273
1274 if (prod_idx >= QEDI_CQ_SIZE)
1275 prod_idx = prod_idx % QEDI_CQ_SIZE;
1276
1277 que = qedi->global_queues[fp->sb_id];
1278 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1279 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
1280 que, prod_idx, que->cq_cons_idx, fp->sb_id);
1281
1282 qedi->intr_cpu = fp->sb_id;
1283 cpu = smp_processor_id();
1284 p = &per_cpu(qedi_percpu, cpu);
1285
1286 if (unlikely(!p->iothread))
1287 WARN_ON(1);
1288
1289 spin_lock_irqsave(&p->p_work_lock, flags);
1290 while (que->cq_cons_idx != prod_idx) {
1291 cqe = &que->cq[que->cq_cons_idx];
1292
1293 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1294 "cqe=%p prod_idx=%d cons_idx=%d.\n",
1295 cqe, prod_idx, que->cq_cons_idx);
1296
1297 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1298 if (ret)
1299 QEDI_WARN(&qedi->dbg_ctx,
1300 "Dropping CQE 0x%x for cid=0x%x.\n",
1301 que->cq_cons_idx, cqe->cqe_common.conn_id);
1302
1303 que->cq_cons_idx++;
1304 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1305 que->cq_cons_idx = 0;
1306 }
1307 wake_up_process(p->iothread);
1308 spin_unlock_irqrestore(&p->p_work_lock, flags);
1309
1310 return true;
1311}
1312
1313static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1314{
1315 struct qedi_ctx *qedi = fp->qedi;
1316 struct global_queue *que;
1317 struct qed_sb_info *sb_info = fp->sb_info;
1318 struct status_block_e4 *sb = sb_info->sb_virt;
1319 u16 prod_idx;
1320
1321 barrier();
1322
1323
1324 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1325
1326
1327 que = qedi->global_queues[fp->sb_id];
1328
1329
1330 if (prod_idx >= QEDI_CQ_SIZE)
1331 prod_idx = prod_idx % QEDI_CQ_SIZE;
1332
1333 return (que->cq_cons_idx != prod_idx);
1334}
1335
1336
1337static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1338{
1339 struct qedi_fastpath *fp = dev_id;
1340 struct qedi_ctx *qedi = fp->qedi;
1341 bool wake_io_thread = true;
1342
1343 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1344
1345process_again:
1346 wake_io_thread = qedi_process_completions(fp);
1347 if (wake_io_thread) {
1348 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1349 "process already running\n");
1350 }
1351
1352 if (!qedi_fp_has_work(fp))
1353 qed_sb_update_sb_idx(fp->sb_info);
1354
1355
1356 rmb();
1357
1358 if (!qedi_fp_has_work(fp))
1359 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1360 else
1361 goto process_again;
1362
1363 return IRQ_HANDLED;
1364}
1365
1366
1367static void qedi_simd_int_handler(void *cookie)
1368{
1369
1370 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1371
1372 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1373}
1374
1375#define QEDI_SIMD_HANDLER_NUM 0
1376static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1377{
1378 int i;
1379 u16 idx;
1380
1381 if (qedi->int_info.msix_cnt) {
1382 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1383 idx = i * qedi->dev_info.common.num_hwfns +
1384 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1385
1386 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1387 "Freeing IRQ #%d vector_idx=%d.\n", i, idx);
1388
1389 synchronize_irq(qedi->int_info.msix[idx].vector);
1390 irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1391 NULL);
1392 free_irq(qedi->int_info.msix[idx].vector,
1393 &qedi->fp_array[i]);
1394 }
1395 } else {
1396 qedi_ops->common->simd_handler_clean(qedi->cdev,
1397 QEDI_SIMD_HANDLER_NUM);
1398 }
1399
1400 qedi->int_info.used_cnt = 0;
1401 qedi_ops->common->set_fp_int(qedi->cdev, 0);
1402}
1403
1404static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1405{
1406 int i, rc, cpu;
1407 u16 idx;
1408
1409 cpu = cpumask_first(cpu_online_mask);
1410 for (i = 0; i < qedi->msix_count; i++) {
1411 idx = i * qedi->dev_info.common.num_hwfns +
1412 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1413
1414 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1415 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
1416 qedi->dev_info.common.num_hwfns,
1417 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
1418
1419 rc = request_irq(qedi->int_info.msix[idx].vector,
1420 qedi_msix_handler, 0, "qedi",
1421 &qedi->fp_array[i]);
1422 if (rc) {
1423 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1424 qedi_sync_free_irqs(qedi);
1425 return rc;
1426 }
1427 qedi->int_info.used_cnt++;
1428 rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1429 get_cpu_mask(cpu));
1430 cpu = cpumask_next(cpu, cpu_online_mask);
1431 }
1432
1433 return 0;
1434}
1435
1436static int qedi_setup_int(struct qedi_ctx *qedi)
1437{
1438 int rc = 0;
1439
1440 rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues);
1441 if (rc < 0)
1442 goto exit_setup_int;
1443
1444 qedi->msix_count = rc;
1445
1446 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1447 if (rc)
1448 goto exit_setup_int;
1449
1450 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1451 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1452 qedi->int_info.msix_cnt, num_online_cpus());
1453
1454 if (qedi->int_info.msix_cnt) {
1455 rc = qedi_request_msix_irq(qedi);
1456 goto exit_setup_int;
1457 } else {
1458 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1459 QEDI_SIMD_HANDLER_NUM,
1460 qedi_simd_int_handler);
1461 qedi->int_info.used_cnt = 1;
1462 }
1463
1464exit_setup_int:
1465 return rc;
1466}
1467
1468static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1469{
1470 if (qedi->iscsi_image)
1471 dma_free_coherent(&qedi->pdev->dev,
1472 sizeof(struct qedi_nvm_iscsi_image),
1473 qedi->iscsi_image, qedi->nvm_buf_dma);
1474}
1475
1476static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1477{
1478 qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev,
1479 sizeof(struct qedi_nvm_iscsi_image),
1480 &qedi->nvm_buf_dma, GFP_KERNEL);
1481 if (!qedi->iscsi_image) {
1482 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1483 return -ENOMEM;
1484 }
1485 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1486 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
1487 qedi->nvm_buf_dma);
1488
1489 return 0;
1490}
1491
1492static void qedi_free_bdq(struct qedi_ctx *qedi)
1493{
1494 int i;
1495
1496 if (qedi->bdq_pbl_list)
1497 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
1498 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1499
1500 if (qedi->bdq_pbl)
1501 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1502 qedi->bdq_pbl, qedi->bdq_pbl_dma);
1503
1504 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1505 if (qedi->bdq[i].buf_addr) {
1506 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1507 qedi->bdq[i].buf_addr,
1508 qedi->bdq[i].buf_dma);
1509 }
1510 }
1511}
1512
1513static void qedi_free_global_queues(struct qedi_ctx *qedi)
1514{
1515 int i;
1516 struct global_queue **gl = qedi->global_queues;
1517
1518 for (i = 0; i < qedi->num_queues; i++) {
1519 if (!gl[i])
1520 continue;
1521
1522 if (gl[i]->cq)
1523 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1524 gl[i]->cq, gl[i]->cq_dma);
1525 if (gl[i]->cq_pbl)
1526 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1527 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1528
1529 kfree(gl[i]);
1530 }
1531 qedi_free_bdq(qedi);
1532 qedi_free_nvm_iscsi_cfg(qedi);
1533}
1534
1535static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1536{
1537 int i;
1538 struct scsi_bd *pbl;
1539 u64 *list;
1540 dma_addr_t page;
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 page = qedi->bdq_pbl_list_dma;
1611 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1612 *list = qedi->bdq_pbl_dma;
1613 list++;
1614 page += QEDI_PAGE_SIZE;
1615 }
1616
1617 return 0;
1618}
1619
1620static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1621{
1622 u32 *list;
1623 int i;
1624 int status;
1625 u32 *pbl;
1626 dma_addr_t page;
1627 int num_pages;
1628
1629
1630
1631
1632
1633 if (!qedi->num_queues) {
1634 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1635 return -ENOMEM;
1636 }
1637
1638
1639
1640
1641 if (!qedi->p_cpuq) {
1642 status = -EINVAL;
1643 goto mem_alloc_failure;
1644 }
1645
1646 qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1647 qedi->num_queues), GFP_KERNEL);
1648 if (!qedi->global_queues) {
1649 QEDI_ERR(&qedi->dbg_ctx,
1650 "Unable to allocate global queues array ptr memory\n");
1651 return -ENOMEM;
1652 }
1653 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1654 "qedi->global_queues=%p.\n", qedi->global_queues);
1655
1656
1657 status = qedi_alloc_bdq(qedi);
1658 if (status)
1659 goto mem_alloc_failure;
1660
1661
1662 status = qedi_alloc_nvm_iscsi_cfg(qedi);
1663 if (status)
1664 goto mem_alloc_failure;
1665
1666
1667
1668
1669 for (i = 0; i < qedi->num_queues; i++) {
1670 qedi->global_queues[i] =
1671 kzalloc(sizeof(*qedi->global_queues[0]),
1672 GFP_KERNEL);
1673 if (!qedi->global_queues[i]) {
1674 QEDI_ERR(&qedi->dbg_ctx,
1675 "Unable to allocation global queue %d.\n", i);
1676 status = -ENOMEM;
1677 goto mem_alloc_failure;
1678 }
1679
1680 qedi->global_queues[i]->cq_mem_size =
1681 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1682 qedi->global_queues[i]->cq_mem_size =
1683 (qedi->global_queues[i]->cq_mem_size +
1684 (QEDI_PAGE_SIZE - 1));
1685
1686 qedi->global_queues[i]->cq_pbl_size =
1687 (qedi->global_queues[i]->cq_mem_size /
1688 QEDI_PAGE_SIZE) * sizeof(void *);
1689 qedi->global_queues[i]->cq_pbl_size =
1690 (qedi->global_queues[i]->cq_pbl_size +
1691 (QEDI_PAGE_SIZE - 1));
1692
1693 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev,
1694 qedi->global_queues[i]->cq_mem_size,
1695 &qedi->global_queues[i]->cq_dma,
1696 GFP_KERNEL);
1697
1698 if (!qedi->global_queues[i]->cq) {
1699 QEDI_WARN(&qedi->dbg_ctx,
1700 "Could not allocate cq.\n");
1701 status = -ENOMEM;
1702 goto mem_alloc_failure;
1703 }
1704 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1705 qedi->global_queues[i]->cq_pbl_size,
1706 &qedi->global_queues[i]->cq_pbl_dma,
1707 GFP_KERNEL);
1708
1709 if (!qedi->global_queues[i]->cq_pbl) {
1710 QEDI_WARN(&qedi->dbg_ctx,
1711 "Could not allocate cq PBL.\n");
1712 status = -ENOMEM;
1713 goto mem_alloc_failure;
1714 }
1715
1716
1717 num_pages = qedi->global_queues[i]->cq_mem_size /
1718 QEDI_PAGE_SIZE;
1719 page = qedi->global_queues[i]->cq_dma;
1720 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1721
1722 while (num_pages--) {
1723 *pbl = (u32)page;
1724 pbl++;
1725 *pbl = (u32)((u64)page >> 32);
1726 pbl++;
1727 page += QEDI_PAGE_SIZE;
1728 }
1729 }
1730
1731 list = (u32 *)qedi->p_cpuq;
1732
1733
1734
1735
1736
1737
1738
1739 for (i = 0; i < qedi->num_queues; i++) {
1740 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1741 list++;
1742 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1743 list++;
1744
1745 *list = (u32)0;
1746 list++;
1747 *list = (u32)((u64)0 >> 32);
1748 list++;
1749 }
1750
1751 return 0;
1752
1753mem_alloc_failure:
1754 qedi_free_global_queues(qedi);
1755 return status;
1756}
1757
1758int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1759{
1760 int rval = 0;
1761 u32 *pbl;
1762 dma_addr_t page;
1763 int num_pages;
1764
1765 if (!ep)
1766 return -EIO;
1767
1768
1769 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1770 ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1771
1772 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1773 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1774
1775 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1776 &ep->sq_dma, GFP_KERNEL);
1777 if (!ep->sq) {
1778 QEDI_WARN(&qedi->dbg_ctx,
1779 "Could not allocate send queue.\n");
1780 rval = -ENOMEM;
1781 goto out;
1782 }
1783 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1784 &ep->sq_pbl_dma, GFP_KERNEL);
1785 if (!ep->sq_pbl) {
1786 QEDI_WARN(&qedi->dbg_ctx,
1787 "Could not allocate send queue PBL.\n");
1788 rval = -ENOMEM;
1789 goto out_free_sq;
1790 }
1791
1792
1793 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1794 page = ep->sq_dma;
1795 pbl = (u32 *)ep->sq_pbl;
1796
1797 while (num_pages--) {
1798 *pbl = (u32)page;
1799 pbl++;
1800 *pbl = (u32)((u64)page >> 32);
1801 pbl++;
1802 page += QEDI_PAGE_SIZE;
1803 }
1804
1805 return rval;
1806
1807out_free_sq:
1808 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1809 ep->sq_dma);
1810out:
1811 return rval;
1812}
1813
1814void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1815{
1816 if (ep->sq_pbl)
1817 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1818 ep->sq_pbl_dma);
1819 if (ep->sq)
1820 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1821 ep->sq_dma);
1822}
1823
1824int qedi_get_task_idx(struct qedi_ctx *qedi)
1825{
1826 s16 tmp_idx;
1827
1828again:
1829 tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1830 MAX_ISCSI_TASK_ENTRIES);
1831
1832 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1833 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1834 tmp_idx = -1;
1835 goto err_idx;
1836 }
1837
1838 if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1839 goto again;
1840
1841err_idx:
1842 return tmp_idx;
1843}
1844
1845void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1846{
1847 if (!test_and_clear_bit(idx, qedi->task_idx_map))
1848 QEDI_ERR(&qedi->dbg_ctx,
1849 "FW task context, already cleared, tid=0x%x\n", idx);
1850}
1851
1852void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1853 struct qedi_cmd *cmd)
1854{
1855 qedi->itt_map[tid].itt = proto_itt;
1856 qedi->itt_map[tid].p_cmd = cmd;
1857
1858 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1859 "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1860 qedi->itt_map[tid].itt);
1861}
1862
1863void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1864{
1865 u16 i;
1866
1867 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1868 if (qedi->itt_map[i].itt == itt) {
1869 *tid = i;
1870 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1871 "Ref itt=0x%x, found at tid=0x%x\n",
1872 itt, *tid);
1873 return;
1874 }
1875 }
1876
1877 WARN_ON(1);
1878}
1879
1880void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1881{
1882 *proto_itt = qedi->itt_map[tid].itt;
1883 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1884 "Get itt map tid [0x%x with proto itt[0x%x]",
1885 tid, *proto_itt);
1886}
1887
1888struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1889{
1890 struct qedi_cmd *cmd = NULL;
1891
1892 if (tid >= MAX_ISCSI_TASK_ENTRIES)
1893 return NULL;
1894
1895 cmd = qedi->itt_map[tid].p_cmd;
1896 if (cmd->task_id != tid)
1897 return NULL;
1898
1899 qedi->itt_map[tid].p_cmd = NULL;
1900
1901 return cmd;
1902}
1903
1904static int qedi_alloc_itt(struct qedi_ctx *qedi)
1905{
1906 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1907 sizeof(struct qedi_itt_map), GFP_KERNEL);
1908 if (!qedi->itt_map) {
1909 QEDI_ERR(&qedi->dbg_ctx,
1910 "Unable to allocate itt map array memory\n");
1911 return -ENOMEM;
1912 }
1913 return 0;
1914}
1915
1916static void qedi_free_itt(struct qedi_ctx *qedi)
1917{
1918 kfree(qedi->itt_map);
1919}
1920
1921static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1922 .rx_cb = qedi_ll2_rx,
1923 .tx_cb = NULL,
1924};
1925
1926static int qedi_percpu_io_thread(void *arg)
1927{
1928 struct qedi_percpu_s *p = arg;
1929 struct qedi_work *work, *tmp;
1930 unsigned long flags;
1931 LIST_HEAD(work_list);
1932
1933 set_user_nice(current, -20);
1934
1935 while (!kthread_should_stop()) {
1936 spin_lock_irqsave(&p->p_work_lock, flags);
1937 while (!list_empty(&p->work_list)) {
1938 list_splice_init(&p->work_list, &work_list);
1939 spin_unlock_irqrestore(&p->p_work_lock, flags);
1940
1941 list_for_each_entry_safe(work, tmp, &work_list, list) {
1942 list_del_init(&work->list);
1943 qedi_fp_process_cqes(work);
1944 if (!work->is_solicited)
1945 kfree(work);
1946 }
1947 cond_resched();
1948 spin_lock_irqsave(&p->p_work_lock, flags);
1949 }
1950 set_current_state(TASK_INTERRUPTIBLE);
1951 spin_unlock_irqrestore(&p->p_work_lock, flags);
1952 schedule();
1953 }
1954 __set_current_state(TASK_RUNNING);
1955
1956 return 0;
1957}
1958
1959static int qedi_cpu_online(unsigned int cpu)
1960{
1961 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1962 struct task_struct *thread;
1963
1964 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1965 cpu_to_node(cpu),
1966 "qedi_thread/%d", cpu);
1967 if (IS_ERR(thread))
1968 return PTR_ERR(thread);
1969
1970 kthread_bind(thread, cpu);
1971 p->iothread = thread;
1972 wake_up_process(thread);
1973 return 0;
1974}
1975
1976static int qedi_cpu_offline(unsigned int cpu)
1977{
1978 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1979 struct qedi_work *work, *tmp;
1980 struct task_struct *thread;
1981
1982 spin_lock_bh(&p->p_work_lock);
1983 thread = p->iothread;
1984 p->iothread = NULL;
1985
1986 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1987 list_del_init(&work->list);
1988 qedi_fp_process_cqes(work);
1989 if (!work->is_solicited)
1990 kfree(work);
1991 }
1992
1993 spin_unlock_bh(&p->p_work_lock);
1994 if (thread)
1995 kthread_stop(thread);
1996 return 0;
1997}
1998
1999void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
2000{
2001 struct qed_ll2_params params;
2002
2003 qedi_recover_all_conns(qedi);
2004
2005 qedi_ops->ll2->stop(qedi->cdev);
2006 qedi_ll2_free_skbs(qedi);
2007
2008 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
2009 qedi->ll2_mtu, mtu);
2010 memset(¶ms, 0, sizeof(params));
2011 qedi->ll2_mtu = mtu;
2012 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
2013 params.drop_ttl0_packets = 0;
2014 params.rx_vlan_stripping = 1;
2015 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2016 qedi_ops->ll2->start(qedi->cdev, ¶ms);
2017}
2018
2019
2020
2021
2022
2023static struct nvm_iscsi_block *
2024qedi_get_nvram_block(struct qedi_ctx *qedi)
2025{
2026 int i;
2027 u8 pf;
2028 u32 flags;
2029 struct nvm_iscsi_block *block;
2030
2031 pf = qedi->dev_info.common.abs_pf_id;
2032 block = &qedi->iscsi_image->iscsi_cfg.block[0];
2033 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
2034 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
2035 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
2036 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
2037 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
2038 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
2039 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
2040 return block;
2041 }
2042 return NULL;
2043}
2044
2045static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
2046{
2047 struct qedi_ctx *qedi = data;
2048 struct nvm_iscsi_initiator *initiator;
2049 int rc = 1;
2050 u32 ipv6_en, dhcp_en, ip_len;
2051 struct nvm_iscsi_block *block;
2052 char *fmt, *ip, *sub, *gw;
2053
2054 block = qedi_get_nvram_block(qedi);
2055 if (!block)
2056 return 0;
2057
2058 initiator = &block->initiator;
2059 ipv6_en = block->generic.ctrl_flags &
2060 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2061 dhcp_en = block->generic.ctrl_flags &
2062 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
2063
2064 fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
2065 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
2066 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2067 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
2068 initiator->ipv4.subnet_mask.byte;
2069 gw = ipv6_en ? initiator->ipv6.gateway.byte :
2070 initiator->ipv4.gateway.byte;
2071
2072 fmt = dhcp_en ? "%s\n" : fmt;
2073 if (dhcp_en) {
2074 ip = ipv6_en ? "0::0" : "0.0.0.0";
2075 sub = ip;
2076 gw = ip;
2077 ip_len = ipv6_en ? 5 : 8;
2078 }
2079
2080 switch (type) {
2081 case ISCSI_BOOT_ETH_IP_ADDR:
2082 rc = snprintf(buf, ip_len, fmt, ip);
2083 break;
2084 case ISCSI_BOOT_ETH_SUBNET_MASK:
2085 rc = snprintf(buf, ip_len, fmt, sub);
2086 break;
2087 case ISCSI_BOOT_ETH_GATEWAY:
2088 rc = snprintf(buf, ip_len, fmt, gw);
2089 break;
2090 case ISCSI_BOOT_ETH_FLAGS:
2091 rc = snprintf(buf, 3, "%hhd\n",
2092 SYSFS_FLAG_FW_SEL_BOOT);
2093 break;
2094 case ISCSI_BOOT_ETH_INDEX:
2095 rc = snprintf(buf, 3, "0\n");
2096 break;
2097 case ISCSI_BOOT_ETH_MAC:
2098 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
2099 break;
2100 case ISCSI_BOOT_ETH_VLAN:
2101 rc = snprintf(buf, 12, "%d\n",
2102 GET_FIELD2(initiator->generic_cont0,
2103 NVM_ISCSI_CFG_INITIATOR_VLAN));
2104 break;
2105 case ISCSI_BOOT_ETH_ORIGIN:
2106 if (dhcp_en)
2107 rc = snprintf(buf, 3, "3\n");
2108 break;
2109 default:
2110 rc = 0;
2111 break;
2112 }
2113
2114 return rc;
2115}
2116
2117static umode_t qedi_eth_get_attr_visibility(void *data, int type)
2118{
2119 int rc = 1;
2120
2121 switch (type) {
2122 case ISCSI_BOOT_ETH_FLAGS:
2123 case ISCSI_BOOT_ETH_MAC:
2124 case ISCSI_BOOT_ETH_INDEX:
2125 case ISCSI_BOOT_ETH_IP_ADDR:
2126 case ISCSI_BOOT_ETH_SUBNET_MASK:
2127 case ISCSI_BOOT_ETH_GATEWAY:
2128 case ISCSI_BOOT_ETH_ORIGIN:
2129 case ISCSI_BOOT_ETH_VLAN:
2130 rc = 0444;
2131 break;
2132 default:
2133 rc = 0;
2134 break;
2135 }
2136 return rc;
2137}
2138
2139static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
2140{
2141 struct qedi_ctx *qedi = data;
2142 struct nvm_iscsi_initiator *initiator;
2143 int rc;
2144 struct nvm_iscsi_block *block;
2145
2146 block = qedi_get_nvram_block(qedi);
2147 if (!block)
2148 return 0;
2149
2150 initiator = &block->initiator;
2151
2152 switch (type) {
2153 case ISCSI_BOOT_INI_INITIATOR_NAME:
2154 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2155 initiator->initiator_name.byte);
2156 break;
2157 default:
2158 rc = 0;
2159 break;
2160 }
2161 return rc;
2162}
2163
2164static umode_t qedi_ini_get_attr_visibility(void *data, int type)
2165{
2166 int rc;
2167
2168 switch (type) {
2169 case ISCSI_BOOT_INI_INITIATOR_NAME:
2170 rc = 0444;
2171 break;
2172 default:
2173 rc = 0;
2174 break;
2175 }
2176 return rc;
2177}
2178
2179static ssize_t
2180qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
2181 char *buf, enum qedi_nvm_tgts idx)
2182{
2183 int rc = 1;
2184 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
2185 struct nvm_iscsi_block *block;
2186 char *chap_name, *chap_secret;
2187 char *mchap_name, *mchap_secret;
2188
2189 block = qedi_get_nvram_block(qedi);
2190 if (!block)
2191 goto exit_show_tgt_info;
2192
2193 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2194 "Port:%d, tgt_idx:%d\n",
2195 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
2196
2197 ctrl_flags = block->target[idx].ctrl_flags &
2198 NVM_ISCSI_CFG_TARGET_ENABLED;
2199
2200 if (!ctrl_flags) {
2201 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2202 "Target disabled\n");
2203 goto exit_show_tgt_info;
2204 }
2205
2206 ipv6_en = block->generic.ctrl_flags &
2207 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2208 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2209 chap_en = block->generic.ctrl_flags &
2210 NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
2211 chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
2212 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
2213
2214 mchap_en = block->generic.ctrl_flags &
2215 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
2216 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
2217 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
2218
2219 switch (type) {
2220 case ISCSI_BOOT_TGT_NAME:
2221 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2222 block->target[idx].target_name.byte);
2223 break;
2224 case ISCSI_BOOT_TGT_IP_ADDR:
2225 if (ipv6_en)
2226 rc = snprintf(buf, ip_len, "%pI6\n",
2227 block->target[idx].ipv6_addr.byte);
2228 else
2229 rc = snprintf(buf, ip_len, "%pI4\n",
2230 block->target[idx].ipv4_addr.byte);
2231 break;
2232 case ISCSI_BOOT_TGT_PORT:
2233 rc = snprintf(buf, 12, "%d\n",
2234 GET_FIELD2(block->target[idx].generic_cont0,
2235 NVM_ISCSI_CFG_TARGET_TCP_PORT));
2236 break;
2237 case ISCSI_BOOT_TGT_LUN:
2238 rc = snprintf(buf, 22, "%.*d\n",
2239 block->target[idx].lun.value[1],
2240 block->target[idx].lun.value[0]);
2241 break;
2242 case ISCSI_BOOT_TGT_CHAP_NAME:
2243 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2244 chap_name);
2245 break;
2246 case ISCSI_BOOT_TGT_CHAP_SECRET:
2247 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2248 chap_secret);
2249 break;
2250 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2251 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2252 mchap_name);
2253 break;
2254 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2255 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2256 mchap_secret);
2257 break;
2258 case ISCSI_BOOT_TGT_FLAGS:
2259 rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
2260 break;
2261 case ISCSI_BOOT_TGT_NIC_ASSOC:
2262 rc = snprintf(buf, 3, "0\n");
2263 break;
2264 default:
2265 rc = 0;
2266 break;
2267 }
2268
2269exit_show_tgt_info:
2270 return rc;
2271}
2272
2273static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
2274{
2275 struct qedi_ctx *qedi = data;
2276
2277 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
2278}
2279
2280static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
2281{
2282 struct qedi_ctx *qedi = data;
2283
2284 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
2285}
2286
2287static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
2288{
2289 int rc;
2290
2291 switch (type) {
2292 case ISCSI_BOOT_TGT_NAME:
2293 case ISCSI_BOOT_TGT_IP_ADDR:
2294 case ISCSI_BOOT_TGT_PORT:
2295 case ISCSI_BOOT_TGT_LUN:
2296 case ISCSI_BOOT_TGT_CHAP_NAME:
2297 case ISCSI_BOOT_TGT_CHAP_SECRET:
2298 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2299 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2300 case ISCSI_BOOT_TGT_NIC_ASSOC:
2301 case ISCSI_BOOT_TGT_FLAGS:
2302 rc = 0444;
2303 break;
2304 default:
2305 rc = 0;
2306 break;
2307 }
2308 return rc;
2309}
2310
2311static void qedi_boot_release(void *data)
2312{
2313 struct qedi_ctx *qedi = data;
2314
2315 scsi_host_put(qedi->shost);
2316}
2317
2318static int qedi_get_boot_info(struct qedi_ctx *qedi)
2319{
2320 int ret = 1;
2321
2322 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2323 "Get NVM iSCSI CFG image\n");
2324 ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2325 QED_NVM_IMAGE_ISCSI_CFG,
2326 (char *)qedi->iscsi_image,
2327 sizeof(struct qedi_nvm_iscsi_image));
2328 if (ret)
2329 QEDI_ERR(&qedi->dbg_ctx,
2330 "Could not get NVM image. ret = %d\n", ret);
2331
2332 return ret;
2333}
2334
2335static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2336{
2337 struct iscsi_boot_kobj *boot_kobj;
2338
2339 if (qedi_get_boot_info(qedi))
2340 return -EPERM;
2341
2342 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2343 if (!qedi->boot_kset)
2344 goto kset_free;
2345
2346 if (!scsi_host_get(qedi->shost))
2347 goto kset_free;
2348
2349 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2350 qedi_show_boot_tgt_pri_info,
2351 qedi_tgt_get_attr_visibility,
2352 qedi_boot_release);
2353 if (!boot_kobj)
2354 goto put_host;
2355
2356 if (!scsi_host_get(qedi->shost))
2357 goto kset_free;
2358
2359 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2360 qedi_show_boot_tgt_sec_info,
2361 qedi_tgt_get_attr_visibility,
2362 qedi_boot_release);
2363 if (!boot_kobj)
2364 goto put_host;
2365
2366 if (!scsi_host_get(qedi->shost))
2367 goto kset_free;
2368
2369 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2370 qedi_show_boot_ini_info,
2371 qedi_ini_get_attr_visibility,
2372 qedi_boot_release);
2373 if (!boot_kobj)
2374 goto put_host;
2375
2376 if (!scsi_host_get(qedi->shost))
2377 goto kset_free;
2378
2379 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2380 qedi_show_boot_eth_info,
2381 qedi_eth_get_attr_visibility,
2382 qedi_boot_release);
2383 if (!boot_kobj)
2384 goto put_host;
2385
2386 return 0;
2387
2388put_host:
2389 scsi_host_put(qedi->shost);
2390kset_free:
2391 iscsi_boot_destroy_kset(qedi->boot_kset);
2392 return -ENOMEM;
2393}
2394
2395static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev,
2396 pci_channel_state_t state)
2397{
2398 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2399
2400 QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n",
2401 __func__, state);
2402
2403 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
2404 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2405 "Recovery already in progress.\n");
2406 return PCI_ERS_RESULT_NONE;
2407 }
2408
2409 qedi_ops->common->recovery_process(qedi->cdev);
2410
2411 return PCI_ERS_RESULT_CAN_RECOVER;
2412}
2413
2414static void __qedi_remove(struct pci_dev *pdev, int mode)
2415{
2416 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2417 int rval;
2418 u16 retry = 10;
2419
2420 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2421 iscsi_host_remove(qedi->shost);
2422
2423 if (qedi->tmf_thread) {
2424 flush_workqueue(qedi->tmf_thread);
2425 destroy_workqueue(qedi->tmf_thread);
2426 qedi->tmf_thread = NULL;
2427 }
2428
2429 if (qedi->offload_thread) {
2430 flush_workqueue(qedi->offload_thread);
2431 destroy_workqueue(qedi->offload_thread);
2432 qedi->offload_thread = NULL;
2433 }
2434 }
2435
2436#ifdef CONFIG_DEBUG_FS
2437 qedi_dbg_host_exit(&qedi->dbg_ctx);
2438#endif
2439 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2440 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2441
2442 qedi_sync_free_irqs(qedi);
2443
2444 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2445 while (retry--) {
2446 rval = qedi_ops->stop(qedi->cdev);
2447 if (rval < 0)
2448 msleep(1000);
2449 else
2450 break;
2451 }
2452 qedi_ops->ll2->stop(qedi->cdev);
2453 }
2454
2455 qedi_free_iscsi_pf_param(qedi);
2456
2457 rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
2458 if (rval)
2459 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
2460
2461 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2462 qedi_ops->common->slowpath_stop(qedi->cdev);
2463 qedi_ops->common->remove(qedi->cdev);
2464 }
2465
2466 qedi_destroy_fp(qedi);
2467
2468 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2469 qedi_release_cid_que(qedi);
2470 qedi_cm_free_mem(qedi);
2471 qedi_free_uio(qedi->udev);
2472 qedi_free_itt(qedi);
2473
2474 if (qedi->ll2_recv_thread) {
2475 kthread_stop(qedi->ll2_recv_thread);
2476 qedi->ll2_recv_thread = NULL;
2477 }
2478 qedi_ll2_free_skbs(qedi);
2479
2480 if (qedi->boot_kset)
2481 iscsi_boot_destroy_kset(qedi->boot_kset);
2482
2483 iscsi_host_free(qedi->shost);
2484 }
2485}
2486
2487static void qedi_board_disable_work(struct work_struct *work)
2488{
2489 struct qedi_ctx *qedi =
2490 container_of(work, struct qedi_ctx,
2491 board_disable_work.work);
2492
2493 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2494 "Fan failure, Unloading firmware context.\n");
2495
2496 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2497 return;
2498
2499 __qedi_remove(qedi->pdev, QEDI_MODE_SHUTDOWN);
2500}
2501
2502static void qedi_shutdown(struct pci_dev *pdev)
2503{
2504 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2505
2506 QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__);
2507 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2508 return;
2509 __qedi_remove(pdev, QEDI_MODE_SHUTDOWN);
2510}
2511
2512static int __qedi_probe(struct pci_dev *pdev, int mode)
2513{
2514 struct qedi_ctx *qedi;
2515 struct qed_ll2_params params;
2516 u8 dp_level = 0;
2517 bool is_vf = false;
2518 char host_buf[16];
2519 struct qed_link_params link_params;
2520 struct qed_slowpath_params sp_params;
2521 struct qed_probe_params qed_params;
2522 void *task_start, *task_end;
2523 int rc;
2524 u16 retry = 10;
2525
2526 if (mode != QEDI_MODE_RECOVERY) {
2527 qedi = qedi_host_alloc(pdev);
2528 if (!qedi) {
2529 rc = -ENOMEM;
2530 goto exit_probe;
2531 }
2532 } else {
2533 qedi = pci_get_drvdata(pdev);
2534 }
2535
2536retry_probe:
2537 if (mode == QEDI_MODE_RECOVERY)
2538 msleep(2000);
2539
2540 memset(&qed_params, 0, sizeof(qed_params));
2541 qed_params.protocol = QED_PROTOCOL_ISCSI;
2542 qed_params.dp_module = qedi_qed_debug;
2543 qed_params.dp_level = dp_level;
2544 qed_params.is_vf = is_vf;
2545 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2546 if (!qedi->cdev) {
2547 if (mode == QEDI_MODE_RECOVERY && retry) {
2548 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2549 "Retry %d initialize hardware\n", retry);
2550 retry--;
2551 goto retry_probe;
2552 }
2553
2554 rc = -ENODEV;
2555 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2556 goto free_host;
2557 }
2558
2559 set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags);
2560 set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags);
2561 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2562
2563 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2564 if (rc)
2565 goto free_host;
2566
2567 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2568 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
2569 qedi->dev_info.common.num_hwfns,
2570 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
2571
2572 rc = qedi_set_iscsi_pf_param(qedi);
2573 if (rc) {
2574 rc = -ENOMEM;
2575 QEDI_ERR(&qedi->dbg_ctx,
2576 "Set iSCSI pf param fail\n");
2577 goto free_host;
2578 }
2579
2580 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2581
2582 rc = qedi_prepare_fp(qedi);
2583 if (rc) {
2584 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2585 goto free_pf_params;
2586 }
2587
2588
2589 memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2590 sp_params.int_mode = QED_INT_MODE_MSIX;
2591 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2592 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2593 sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2594 sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2595 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2596 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2597 if (rc) {
2598 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2599 goto stop_hw;
2600 }
2601
2602
2603
2604
2605 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2606
2607 rc = qedi_setup_int(qedi);
2608 if (rc)
2609 goto stop_iscsi_func;
2610
2611 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2612
2613
2614 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2615 if (rc)
2616 goto stop_iscsi_func;
2617
2618
2619 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2620 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2621 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2622 "BDQ primary_prod=%p secondary_prod=%p.\n",
2623 qedi->bdq_primary_prod,
2624 qedi->bdq_secondary_prod);
2625
2626
2627
2628
2629
2630
2631 qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2632 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2633 "Writing %d to primary and secondary BDQ doorbell registers.\n",
2634 qedi->bdq_prod_idx);
2635 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2636 readw(qedi->bdq_primary_prod);
2637 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2638 readw(qedi->bdq_secondary_prod);
2639
2640 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2641 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2642 qedi->mac);
2643
2644 snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no);
2645 qedi_ops->common->set_name(qedi->cdev, host_buf);
2646
2647 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2648
2649 memset(¶ms, 0, sizeof(params));
2650 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2651 qedi->ll2_mtu = DEF_PATH_MTU;
2652 params.drop_ttl0_packets = 0;
2653 params.rx_vlan_stripping = 1;
2654 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2655
2656 if (mode != QEDI_MODE_RECOVERY) {
2657
2658 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2659 spin_lock_init(&qedi->ll2_lock);
2660
2661 spin_lock_init(&qedi->hba_lock);
2662 spin_lock_init(&qedi->task_idx_lock);
2663 mutex_init(&qedi->stats_lock);
2664 }
2665 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2666 qedi_ops->ll2->start(qedi->cdev, ¶ms);
2667
2668 if (mode != QEDI_MODE_RECOVERY) {
2669 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2670 (void *)qedi,
2671 "qedi_ll2_thread");
2672 }
2673
2674 rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2675 qedi, qedi_iscsi_event_cb);
2676 if (rc) {
2677 rc = -ENODEV;
2678 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2679 goto stop_slowpath;
2680 }
2681
2682 task_start = qedi_get_task_mem(&qedi->tasks, 0);
2683 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2684 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2685 "Task context start=%p, end=%p block_size=%u.\n",
2686 task_start, task_end, qedi->tasks.size);
2687
2688 memset(&link_params, 0, sizeof(link_params));
2689 link_params.link_up = true;
2690 rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2691 if (rc) {
2692 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2693 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2694 }
2695
2696#ifdef CONFIG_DEBUG_FS
2697 qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops,
2698 qedi_dbg_fops);
2699#endif
2700 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2701 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2702 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2703 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2704
2705 if (mode == QEDI_MODE_NORMAL) {
2706 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2707 QEDI_ERR(&qedi->dbg_ctx,
2708 "Could not add iscsi host\n");
2709 rc = -ENOMEM;
2710 goto remove_host;
2711 }
2712
2713
2714 rc = qedi_alloc_uio_rings(qedi);
2715 if (rc) {
2716 QEDI_ERR(&qedi->dbg_ctx,
2717 "UIO alloc ring failed err=%d\n", rc);
2718 goto remove_host;
2719 }
2720
2721 rc = qedi_init_uio(qedi);
2722 if (rc) {
2723 QEDI_ERR(&qedi->dbg_ctx,
2724 "UIO init failed, err=%d\n", rc);
2725 goto free_uio;
2726 }
2727
2728
2729 rc = qedi_setup_cid_que(qedi);
2730 if (rc) {
2731 QEDI_ERR(&qedi->dbg_ctx,
2732 "Could not setup cid que\n");
2733 goto free_uio;
2734 }
2735
2736 rc = qedi_cm_alloc_mem(qedi);
2737 if (rc) {
2738 QEDI_ERR(&qedi->dbg_ctx,
2739 "Could not alloc cm memory\n");
2740 goto free_cid_que;
2741 }
2742
2743 rc = qedi_alloc_itt(qedi);
2744 if (rc) {
2745 QEDI_ERR(&qedi->dbg_ctx,
2746 "Could not alloc itt memory\n");
2747 goto free_cid_que;
2748 }
2749
2750 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2751 qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2752 if (!qedi->tmf_thread) {
2753 QEDI_ERR(&qedi->dbg_ctx,
2754 "Unable to start tmf thread!\n");
2755 rc = -ENODEV;
2756 goto free_cid_que;
2757 }
2758
2759 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2760 qedi->offload_thread = create_workqueue(host_buf);
2761 if (!qedi->offload_thread) {
2762 QEDI_ERR(&qedi->dbg_ctx,
2763 "Unable to start offload thread!\n");
2764 rc = -ENODEV;
2765 goto free_tmf_thread;
2766 }
2767
2768 INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler);
2769 INIT_DELAYED_WORK(&qedi->board_disable_work,
2770 qedi_board_disable_work);
2771
2772
2773 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2774 atomic_set(&qedi->num_offloads, 0);
2775
2776 if (qedi_setup_boot_info(qedi))
2777 QEDI_ERR(&qedi->dbg_ctx,
2778 "No iSCSI boot target configured\n");
2779
2780 rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
2781 if (rc)
2782 QEDI_ERR(&qedi->dbg_ctx,
2783 "Failed to send drv state to MFW\n");
2784
2785 }
2786
2787 return 0;
2788
2789free_tmf_thread:
2790 destroy_workqueue(qedi->tmf_thread);
2791free_cid_que:
2792 qedi_release_cid_que(qedi);
2793free_uio:
2794 qedi_free_uio(qedi->udev);
2795remove_host:
2796#ifdef CONFIG_DEBUG_FS
2797 qedi_dbg_host_exit(&qedi->dbg_ctx);
2798#endif
2799 iscsi_host_remove(qedi->shost);
2800stop_iscsi_func:
2801 qedi_ops->stop(qedi->cdev);
2802stop_slowpath:
2803 qedi_ops->common->slowpath_stop(qedi->cdev);
2804stop_hw:
2805 qedi_ops->common->remove(qedi->cdev);
2806free_pf_params:
2807 qedi_free_iscsi_pf_param(qedi);
2808free_host:
2809 iscsi_host_free(qedi->shost);
2810exit_probe:
2811 return rc;
2812}
2813
2814static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session)
2815{
2816 struct iscsi_session *session = cls_session->dd_data;
2817 struct iscsi_conn *conn = session->leadconn;
2818 struct qedi_conn *qedi_conn = conn->dd_data;
2819
2820 iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED);
2821}
2822
2823static void qedi_recovery_handler(struct work_struct *work)
2824{
2825 struct qedi_ctx *qedi =
2826 container_of(work, struct qedi_ctx, recovery_work.work);
2827
2828 iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery);
2829
2830
2831
2832
2833 qedi_ops->common->recovery_prolog(qedi->cdev);
2834
2835 __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY);
2836 __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY);
2837 clear_bit(QEDI_IN_RECOVERY, &qedi->flags);
2838}
2839
2840static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2841{
2842 return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2843}
2844
2845static void qedi_remove(struct pci_dev *pdev)
2846{
2847 __qedi_remove(pdev, QEDI_MODE_NORMAL);
2848}
2849
2850static struct pci_device_id qedi_pci_tbl[] = {
2851 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2852 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2853 { 0 },
2854};
2855MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2856
2857static enum cpuhp_state qedi_cpuhp_state;
2858
2859static struct pci_error_handlers qedi_err_handler = {
2860 .error_detected = qedi_io_error_detected,
2861};
2862
2863static struct pci_driver qedi_pci_driver = {
2864 .name = QEDI_MODULE_NAME,
2865 .id_table = qedi_pci_tbl,
2866 .probe = qedi_probe,
2867 .remove = qedi_remove,
2868 .shutdown = qedi_shutdown,
2869 .err_handler = &qedi_err_handler,
2870};
2871
2872static int __init qedi_init(void)
2873{
2874 struct qedi_percpu_s *p;
2875 int cpu, rc = 0;
2876
2877 qedi_ops = qed_get_iscsi_ops();
2878 if (!qedi_ops) {
2879 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2880 return -EINVAL;
2881 }
2882
2883#ifdef CONFIG_DEBUG_FS
2884 qedi_dbg_init("qedi");
2885#endif
2886
2887 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2888 if (!qedi_scsi_transport) {
2889 QEDI_ERR(NULL, "Could not register qedi transport");
2890 rc = -ENOMEM;
2891 goto exit_qedi_init_1;
2892 }
2893
2894 for_each_possible_cpu(cpu) {
2895 p = &per_cpu(qedi_percpu, cpu);
2896 INIT_LIST_HEAD(&p->work_list);
2897 spin_lock_init(&p->p_work_lock);
2898 p->iothread = NULL;
2899 }
2900
2901 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2902 qedi_cpu_online, qedi_cpu_offline);
2903 if (rc < 0)
2904 goto exit_qedi_init_2;
2905 qedi_cpuhp_state = rc;
2906
2907 rc = pci_register_driver(&qedi_pci_driver);
2908 if (rc) {
2909 QEDI_ERR(NULL, "Failed to register driver\n");
2910 goto exit_qedi_hp;
2911 }
2912
2913 return 0;
2914
2915exit_qedi_hp:
2916 cpuhp_remove_state(qedi_cpuhp_state);
2917exit_qedi_init_2:
2918 iscsi_unregister_transport(&qedi_iscsi_transport);
2919exit_qedi_init_1:
2920#ifdef CONFIG_DEBUG_FS
2921 qedi_dbg_exit();
2922#endif
2923 qed_put_iscsi_ops();
2924 return rc;
2925}
2926
2927static void __exit qedi_cleanup(void)
2928{
2929 pci_unregister_driver(&qedi_pci_driver);
2930 cpuhp_remove_state(qedi_cpuhp_state);
2931 iscsi_unregister_transport(&qedi_iscsi_transport);
2932
2933#ifdef CONFIG_DEBUG_FS
2934 qedi_dbg_exit();
2935#endif
2936 qed_put_iscsi_ops();
2937}
2938
2939MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2940MODULE_LICENSE("GPL");
2941MODULE_AUTHOR("QLogic Corporation");
2942MODULE_VERSION(QEDI_MODULE_VERSION);
2943module_init(qedi_init);
2944module_exit(qedi_cleanup);
2945
