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Merge tag 'for-linus-20190118' of git://git.kernel.dk/linux-block
[mirror_ubuntu-disco-kernel.git] / drivers / scsi / qedi / qedi_main.c
CommitLineData
ace7f46b
MR		 1/*
2 * QLogic iSCSI Offload Driver
3 * Copyright (c) 2016 Cavium Inc.
4 *
5 * This software is available under the terms of the GNU General Public License
6 * (GPL) Version 2, available from the file COPYING in the main directory of
7 * this source tree.
8 */
9
10#include <linux/module.h>
11#include <linux/pci.h>
12#include <linux/kernel.h>
13#include <linux/if_arp.h>
14#include <scsi/iscsi_if.h>
15#include <linux/inet.h>
16#include <net/arp.h>
17#include <linux/list.h>
18#include <linux/kthread.h>
19#include <linux/mm.h>
20#include <linux/if_vlan.h>
21#include <linux/cpu.h>
c57ec8fb 22#include <linux/iscsi_boot_sysfs.h>
ace7f46b
MR		 23
24#include <scsi/scsi_cmnd.h>
25#include <scsi/scsi_device.h>
26#include <scsi/scsi_eh.h>
27#include <scsi/scsi_host.h>
28#include <scsi/scsi.h>
29
30#include "qedi.h"
31#include "qedi_gbl.h"
32#include "qedi_iscsi.h"
33
34static uint qedi_fw_debug;
35module_param(qedi_fw_debug, uint, 0644);
36MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
37
38uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
39module_param(qedi_dbg_log, uint, 0644);
40MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
41
42uint qedi_io_tracing;
43module_param(qedi_io_tracing, uint, 0644);
44MODULE_PARM_DESC(qedi_io_tracing,
45 " Enable logging of SCSI requests/completions into trace buffer. (default off).");
46
dcceeeb7
NJ		 47uint qedi_ll2_buf_size = 0x400;
48module_param(qedi_ll2_buf_size, uint, 0644);
49MODULE_PARM_DESC(qedi_ll2_buf_size,
50 "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400.");
51
ace7f46b
MR		 52const struct qed_iscsi_ops *qedi_ops;
53static struct scsi_transport_template *qedi_scsi_transport;
54static struct pci_driver qedi_pci_driver;
55static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
56static LIST_HEAD(qedi_udev_list);
57/* Static function declaration */
58static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
59static void qedi_free_global_queues(struct qedi_ctx *qedi);
60static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
61static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
62static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
534bbdf8 63static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi);
ace7f46b
MR		 64
65static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
66{
67 struct qedi_ctx *qedi;
68 struct qedi_endpoint *qedi_ep;
da090917 69 struct iscsi_eqe_data *data;
ace7f46b
MR		 70 int rval = 0;
71
72 if (!context || !fw_handle) {
73 QEDI_ERR(NULL, "Recv event with ctx NULL\n");
74 return -EINVAL;
75 }
76
77 qedi = (struct qedi_ctx *)context;
78 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
79 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
80
da090917 81 data = (struct iscsi_eqe_data *)fw_handle;
ace7f46b 82 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
da090917
TT		 83 "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n",
84 data->icid, data->conn_id, data->error_code,
85 data->error_pdu_opcode_reserved);
ace7f46b 86
da090917 87 qedi_ep = qedi->ep_tbl[data->icid];
ace7f46b
MR		 88
89 if (!qedi_ep) {
90 QEDI_WARN(&qedi->dbg_ctx,
91 "Cannot process event, ep already disconnected, cid=0x%x\n",
da090917 92 data->icid);
ace7f46b
MR		 93 WARN_ON(1);
94 return -ENODEV;
95 }
96
97 switch (fw_event_code) {
98 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
99 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
100 qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
101
102 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
103 break;
104 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
105 qedi_ep->state = EP_STATE_DISCONN_COMPL;
106 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
107 break;
108 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
109 qedi_process_iscsi_error(qedi_ep, data);
110 break;
111 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
112 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
113 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
114 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
115 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
116 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
117 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
118 qedi_process_tcp_error(qedi_ep, data);
119 break;
120 default:
121 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
122 fw_event_code);
123 }
124
125 return rval;
126}
127
128static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
129{
130 struct qedi_uio_dev *udev = uinfo->priv;
131 struct qedi_ctx *qedi = udev->qedi;
132
133 if (!capable(CAP_NET_ADMIN))
134 return -EPERM;
135
136 if (udev->uio_dev != -1)
137 return -EBUSY;
138
139 rtnl_lock();
140 udev->uio_dev = iminor(inode);
141 qedi_reset_uio_rings(udev);
142 set_bit(UIO_DEV_OPENED, &qedi->flags);
143 rtnl_unlock();
144
145 return 0;
146}
147
148static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
149{
150 struct qedi_uio_dev *udev = uinfo->priv;
151 struct qedi_ctx *qedi = udev->qedi;
152
153 udev->uio_dev = -1;
154 clear_bit(UIO_DEV_OPENED, &qedi->flags);
155 qedi_ll2_free_skbs(qedi);
156 return 0;
157}
158
159static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
160{
5e901d0b
AE		 161 if (udev->uctrl) {
162 free_page((unsigned long)udev->uctrl);
163 udev->uctrl = NULL;
164 }
165
ace7f46b
MR		 166 if (udev->ll2_ring) {
167 free_page((unsigned long)udev->ll2_ring);
168 udev->ll2_ring = NULL;
169 }
170
171 if (udev->ll2_buf) {
172 free_pages((unsigned long)udev->ll2_buf, 2);
173 udev->ll2_buf = NULL;
174 }
175}
176
177static void __qedi_free_uio(struct qedi_uio_dev *udev)
178{
179 uio_unregister_device(&udev->qedi_uinfo);
180
181 __qedi_free_uio_rings(udev);
182
183 pci_dev_put(udev->pdev);
ace7f46b
MR		 184 kfree(udev);
185}
186
187static void qedi_free_uio(struct qedi_uio_dev *udev)
188{
189 if (!udev)
190 return;
191
192 list_del_init(&udev->list);
193 __qedi_free_uio(udev);
194}
195
196static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
197{
198 struct qedi_ctx *qedi = NULL;
199 struct qedi_uio_ctrl *uctrl = NULL;
200
201 qedi = udev->qedi;
202 uctrl = udev->uctrl;
203
204 spin_lock_bh(&qedi->ll2_lock);
205 uctrl->host_rx_cons = 0;
206 uctrl->hw_rx_prod = 0;
207 uctrl->hw_rx_bd_prod = 0;
208 uctrl->host_rx_bd_cons = 0;
209
210 memset(udev->ll2_ring, 0, udev->ll2_ring_size);
211 memset(udev->ll2_buf, 0, udev->ll2_buf_size);
212 spin_unlock_bh(&qedi->ll2_lock);
213}
214
215static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
216{
217 int rc = 0;
218
219 if (udev->ll2_ring || udev->ll2_buf)
220 return rc;
221
5e901d0b
AE		 222 /* Memory for control area. */
223 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
224 if (!udev->uctrl)
225 return -ENOMEM;
226
ace7f46b
MR		 227 /* Allocating memory for LL2 ring */
228 udev->ll2_ring_size = QEDI_PAGE_SIZE;
229 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
230 if (!udev->ll2_ring) {
231 rc = -ENOMEM;
232 goto exit_alloc_ring;
233 }
234
235 /* Allocating memory for Tx/Rx pkt buffer */
dcceeeb7 236 udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size;
ace7f46b
MR		 237 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
238 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
239 __GFP_ZERO, 2);
240 if (!udev->ll2_buf) {
241 rc = -ENOMEM;
242 goto exit_alloc_buf;
243 }
244 return rc;
245
246exit_alloc_buf:
247 free_page((unsigned long)udev->ll2_ring);
248 udev->ll2_ring = NULL;
249exit_alloc_ring:
250 return rc;
251}
252
253static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
254{
255 struct qedi_uio_dev *udev = NULL;
ace7f46b
MR		 256 int rc = 0;
257
258 list_for_each_entry(udev, &qedi_udev_list, list) {
259 if (udev->pdev == qedi->pdev) {
260 udev->qedi = qedi;
261 if (__qedi_alloc_uio_rings(udev)) {
262 udev->qedi = NULL;
263 return -ENOMEM;
264 }
265 qedi->udev = udev;
266 return 0;
267 }
268 }
269
270 udev = kzalloc(sizeof(*udev), GFP_KERNEL);
271 if (!udev) {
272 rc = -ENOMEM;
273 goto err_udev;
274 }
275
ace7f46b
MR		 276 udev->uio_dev = -1;
277
278 udev->qedi = qedi;
279 udev->pdev = qedi->pdev;
ace7f46b
MR		 280
281 rc = __qedi_alloc_uio_rings(udev);
282 if (rc)
5e901d0b 283 goto err_uctrl;
ace7f46b
MR		 284
285 list_add(&udev->list, &qedi_udev_list);
286
287 pci_dev_get(udev->pdev);
288 qedi->udev = udev;
289
290 udev->tx_pkt = udev->ll2_buf;
dcceeeb7 291 udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size;
ace7f46b
MR		 292 return 0;
293
ace7f46b
MR		 294 err_uctrl:
295 kfree(udev);
296 err_udev:
297 return -ENOMEM;
298}
299
300static int qedi_init_uio(struct qedi_ctx *qedi)
301{
302 struct qedi_uio_dev *udev = qedi->udev;
303 struct uio_info *uinfo;
304 int ret = 0;
305
306 if (!udev)
307 return -ENOMEM;
308
309 uinfo = &udev->qedi_uinfo;
310
311 uinfo->mem[0].addr = (unsigned long)udev->uctrl;
312 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
313 uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
314
315 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
316 uinfo->mem[1].size = udev->ll2_ring_size;
317 uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
318
319 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
320 uinfo->mem[2].size = udev->ll2_buf_size;
321 uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
322
323 uinfo->name = "qedi_uio";
324 uinfo->version = QEDI_MODULE_VERSION;
325 uinfo->irq = UIO_IRQ_CUSTOM;
326
327 uinfo->open = qedi_uio_open;
328 uinfo->release = qedi_uio_close;
329
330 if (udev->uio_dev == -1) {
331 if (!uinfo->priv) {
332 uinfo->priv = udev;
333
334 ret = uio_register_device(&udev->pdev->dev, uinfo);
335 if (ret) {
336 QEDI_ERR(&qedi->dbg_ctx,
337 "UIO registration failed\n");
338 }
339 }
340 }
341
342 return ret;
343}
344
345static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
346 struct qed_sb_info *sb_info, u16 sb_id)
347{
21dd79e8 348 struct status_block_e4 *sb_virt;
ace7f46b
MR		 349 dma_addr_t sb_phys;
350 int ret;
351
352 sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
21dd79e8 353 sizeof(struct status_block_e4), &sb_phys,
ace7f46b
MR		 354 GFP_KERNEL);
355 if (!sb_virt) {
356 QEDI_ERR(&qedi->dbg_ctx,
357 "Status block allocation failed for id = %d.\n",
358 sb_id);
359 return -ENOMEM;
360 }
361
362 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
363 sb_id, QED_SB_TYPE_STORAGE);
364 if (ret) {
365 QEDI_ERR(&qedi->dbg_ctx,
366 "Status block initialization failed for id = %d.\n",
367 sb_id);
368 return ret;
369 }
370
371 return 0;
372}
373
374static void qedi_free_sb(struct qedi_ctx *qedi)
375{
376 struct qed_sb_info *sb_info;
377 int id;
378
379 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
380 sb_info = &qedi->sb_array[id];
381 if (sb_info->sb_virt)
382 dma_free_coherent(&qedi->pdev->dev,
383 sizeof(*sb_info->sb_virt),
384 (void *)sb_info->sb_virt,
385 sb_info->sb_phys);
386 }
387}
388
389static void qedi_free_fp(struct qedi_ctx *qedi)
390{
391 kfree(qedi->fp_array);
392 kfree(qedi->sb_array);
393}
394
395static void qedi_destroy_fp(struct qedi_ctx *qedi)
396{
397 qedi_free_sb(qedi);
398 qedi_free_fp(qedi);
399}
400
401static int qedi_alloc_fp(struct qedi_ctx *qedi)
402{
403 int ret = 0;
404
405 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
406 sizeof(struct qedi_fastpath), GFP_KERNEL);
407 if (!qedi->fp_array) {
408 QEDI_ERR(&qedi->dbg_ctx,
409 "fastpath fp array allocation failed.\n");
410 return -ENOMEM;
411 }
412
413 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
414 sizeof(struct qed_sb_info), GFP_KERNEL);
415 if (!qedi->sb_array) {
416 QEDI_ERR(&qedi->dbg_ctx,
417 "fastpath sb array allocation failed.\n");
418 ret = -ENOMEM;
419 goto free_fp;
420 }
421
422 return ret;
423
424free_fp:
425 qedi_free_fp(qedi);
426 return ret;
427}
428
429static void qedi_int_fp(struct qedi_ctx *qedi)
430{
431 struct qedi_fastpath *fp;
432 int id;
433
434 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
435 sizeof(*qedi->fp_array));
436 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
437 sizeof(*qedi->sb_array));
438
439 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
440 fp = &qedi->fp_array[id];
441 fp->sb_info = &qedi->sb_array[id];
442 fp->sb_id = id;
443 fp->qedi = qedi;
444 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
445 "qedi", id);
446
447 /* fp_array[i] ---- irq cookie
448 * So init data which is needed in int ctx
449 */
450 }
451}
452
453static int qedi_prepare_fp(struct qedi_ctx *qedi)
454{
455 struct qedi_fastpath *fp;
456 int id, ret = 0;
457
458 ret = qedi_alloc_fp(qedi);
459 if (ret)
460 goto err;
461
462 qedi_int_fp(qedi);
463
464 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
465 fp = &qedi->fp_array[id];
466 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
467 if (ret) {
468 QEDI_ERR(&qedi->dbg_ctx,
469 "SB allocation and initialization failed.\n");
470 ret = -EIO;
471 goto err_init;
472 }
473 }
474
475 return 0;
476
477err_init:
478 qedi_free_sb(qedi);
479 qedi_free_fp(qedi);
480err:
481 return ret;
482}
483
484static int qedi_setup_cid_que(struct qedi_ctx *qedi)
485{
486 int i;
487
488 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
489 sizeof(u32), GFP_KERNEL);
490 if (!qedi->cid_que.cid_que_base)
491 return -ENOMEM;
492
493 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
494 sizeof(struct qedi_conn *),
495 GFP_KERNEL);
496 if (!qedi->cid_que.conn_cid_tbl) {
497 kfree(qedi->cid_que.cid_que_base);
498 qedi->cid_que.cid_que_base = NULL;
499 return -ENOMEM;
500 }
501
502 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
503 qedi->cid_que.cid_q_prod_idx = 0;
504 qedi->cid_que.cid_q_cons_idx = 0;
505 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
506 qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
507
508 for (i = 0; i < qedi->max_active_conns; i++) {
509 qedi->cid_que.cid_que[i] = i;
510 qedi->cid_que.conn_cid_tbl[i] = NULL;
511 }
512
513 return 0;
514}
515
516static void qedi_release_cid_que(struct qedi_ctx *qedi)
517{
518 kfree(qedi->cid_que.cid_que_base);
519 qedi->cid_que.cid_que_base = NULL;
520
521 kfree(qedi->cid_que.conn_cid_tbl);
522 qedi->cid_que.conn_cid_tbl = NULL;
523}
524
525static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
526 u16 start_id, u16 next)
527{
528 id_tbl->start = start_id;
529 id_tbl->max = size;
530 id_tbl->next = next;
531 spin_lock_init(&id_tbl->lock);
915d9b71 532 id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
ace7f46b
MR		 533 if (!id_tbl->table)
534 return -ENOMEM;
535
536 return 0;
537}
538
539static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
540{
541 kfree(id_tbl->table);
542 id_tbl->table = NULL;
543}
544
545int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
546{
547 int ret = -1;
548
549 id -= id_tbl->start;
550 if (id >= id_tbl->max)
551 return ret;
552
553 spin_lock(&id_tbl->lock);
554 if (!test_bit(id, id_tbl->table)) {
555 set_bit(id, id_tbl->table);
556 ret = 0;
557 }
558 spin_unlock(&id_tbl->lock);
559 return ret;
560}
561
562u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
563{
564 u16 id;
565
566 spin_lock(&id_tbl->lock);
567 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
568 if (id >= id_tbl->max) {
569 id = QEDI_LOCAL_PORT_INVALID;
570 if (id_tbl->next != 0) {
571 id = find_first_zero_bit(id_tbl->table, id_tbl->next);
572 if (id >= id_tbl->next)
573 id = QEDI_LOCAL_PORT_INVALID;
574 }
575 }
576
577 if (id < id_tbl->max) {
578 set_bit(id, id_tbl->table);
579 id_tbl->next = (id + 1) & (id_tbl->max - 1);
580 id += id_tbl->start;
581 }
582
583 spin_unlock(&id_tbl->lock);
584
585 return id;
586}
587
588void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
589{
590 if (id == QEDI_LOCAL_PORT_INVALID)
591 return;
592
593 id -= id_tbl->start;
594 if (id >= id_tbl->max)
595 return;
596
597 clear_bit(id, id_tbl->table);
598}
599
600static void qedi_cm_free_mem(struct qedi_ctx *qedi)
601{
602 kfree(qedi->ep_tbl);
603 qedi->ep_tbl = NULL;
604 qedi_free_id_tbl(&qedi->lcl_port_tbl);
605}
606
607static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
608{
609 u16 port_id;
610
611 qedi->ep_tbl = kzalloc((qedi->max_active_conns *
612 sizeof(struct qedi_endpoint *)), GFP_KERNEL);
613 if (!qedi->ep_tbl)
614 return -ENOMEM;
615 port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
616 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
617 QEDI_LOCAL_PORT_MIN, port_id)) {
618 qedi_cm_free_mem(qedi);
619 return -ENOMEM;
620 }
621
622 return 0;
623}
624
625static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
626{
627 struct Scsi_Host *shost;
628 struct qedi_ctx *qedi = NULL;
629
630 shost = iscsi_host_alloc(&qedi_host_template,
631 sizeof(struct qedi_ctx), 0);
632 if (!shost) {
633 QEDI_ERR(NULL, "Could not allocate shost\n");
634 goto exit_setup_shost;
635 }
636
637 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA;
638 shost->max_channel = 0;
639 shost->max_lun = ~0;
640 shost->max_cmd_len = 16;
641 shost->transportt = qedi_scsi_transport;
642
643 qedi = iscsi_host_priv(shost);
644 memset(qedi, 0, sizeof(*qedi));
645 qedi->shost = shost;
646 qedi->dbg_ctx.host_no = shost->host_no;
647 qedi->pdev = pdev;
648 qedi->dbg_ctx.pdev = pdev;
649 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
650 qedi->max_sqes = QEDI_SQ_SIZE;
651
f664a3cc 652 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
ace7f46b
MR		 653
654 pci_set_drvdata(pdev, qedi);
655
656exit_setup_shost:
657 return qedi;
658}
659
660static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
661{
662 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
663 struct qedi_uio_dev *udev;
664 struct qedi_uio_ctrl *uctrl;
665 struct skb_work_list *work;
cdd3ff87 666 struct ethhdr *eh;
ace7f46b
MR		 667
668 if (!qedi) {
669 QEDI_ERR(NULL, "qedi is NULL\n");
670 return -1;
671 }
672
673 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
674 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
675 "UIO DEV is not opened\n");
676 kfree_skb(skb);
677 return 0;
678 }
679
cdd3ff87
MR		 680 eh = (struct ethhdr *)skb->data;
681 /* Undo VLAN encapsulation */
682 if (eh->h_proto == htons(ETH_P_8021Q)) {
683 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
684 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
685 skb_reset_mac_header(skb);
686 }
687
688 /* Filter out non FIP/FCoE frames here to free them faster */
689 if (eh->h_proto != htons(ETH_P_ARP) &&
690 eh->h_proto != htons(ETH_P_IP) &&
691 eh->h_proto != htons(ETH_P_IPV6)) {
692 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
693 "Dropping frame ethertype [0x%x] len [0x%x].\n",
694 eh->h_proto, skb->len);
695 kfree_skb(skb);
696 return 0;
697 }
698
699 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
700 "Allowed frame ethertype [0x%x] len [0x%x].\n",
701 eh->h_proto, skb->len);
702
ace7f46b
MR		 703 udev = qedi->udev;
704 uctrl = udev->uctrl;
705
706 work = kzalloc(sizeof(*work), GFP_ATOMIC);
707 if (!work) {
708 QEDI_WARN(&qedi->dbg_ctx,
709 "Could not allocate work so dropping frame.\n");
710 kfree_skb(skb);
711 return 0;
712 }
713
714 INIT_LIST_HEAD(&work->list);
715 work->skb = skb;
716
717 if (skb_vlan_tag_present(skb))
718 work->vlan_id = skb_vlan_tag_get(skb);
719
720 if (work->vlan_id)
721 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
722
723 spin_lock_bh(&qedi->ll2_lock);
724 list_add_tail(&work->list, &qedi->ll2_skb_list);
9632a6b4 725 spin_unlock_bh(&qedi->ll2_lock);
ace7f46b 726
9632a6b4 727 wake_up_process(qedi->ll2_recv_thread);
ace7f46b 728
ace7f46b
MR		 729 return 0;
730}
731
732/* map this skb to iscsiuio mmaped region */
733static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
734 u16 vlan_id)
735{
736 struct qedi_uio_dev *udev = NULL;
737 struct qedi_uio_ctrl *uctrl = NULL;
738 struct qedi_rx_bd rxbd;
739 struct qedi_rx_bd *p_rxbd;
740 u32 rx_bd_prod;
741 void *pkt;
742 int len = 0;
9632a6b4 743 u32 prod;
ace7f46b
MR		 744
745 if (!qedi) {
746 QEDI_ERR(NULL, "qedi is NULL\n");
747 return -1;
748 }
749
750 udev = qedi->udev;
751 uctrl = udev->uctrl;
9632a6b4
MR		 752
753 ++uctrl->hw_rx_prod_cnt;
754 prod = (uctrl->hw_rx_prod + 1) % RX_RING;
755
756 pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size);
dcceeeb7 757 len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size);
ace7f46b
MR		 758 memcpy(pkt, skb->data, len);
759
760 memset(&rxbd, 0, sizeof(rxbd));
9632a6b4 761 rxbd.rx_pkt_index = prod;
ace7f46b
MR		 762 rxbd.rx_pkt_len = len;
763 rxbd.vlan_id = vlan_id;
764
765 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
766 rx_bd_prod = uctrl->hw_rx_bd_prod;
767 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
768 p_rxbd += rx_bd_prod;
769
770 memcpy(p_rxbd, &rxbd, sizeof(rxbd));
771
9632a6b4
MR		 772 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
773 "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n",
774 uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod,
775 rxbd.rx_pkt_index, rxbd.rx_pkt_len);
776 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
777 "host_rx_cons [%d] hw_rx_bd_cons [%d].\n",
778 uctrl->host_rx_cons, uctrl->host_rx_bd_cons);
779
780 uctrl->hw_rx_prod = prod;
781
ace7f46b
MR		 782 /* notify the iscsiuio about new packet */
783 uio_event_notify(&udev->qedi_uinfo);
784
785 return 0;
786}
787
788static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
789{
790 struct skb_work_list *work, *work_tmp;
791
792 spin_lock_bh(&qedi->ll2_lock);
793 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
794 list_del(&work->list);
795 if (work->skb)
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
ace7f46b 833
fa97c511 834 num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE;
ace7f46b
MR		 835
836 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
837
42d7c10f
MR		 838 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
839 "Number of CQ count is %d\n", qedi->num_queues);
840
ace7f46b
MR		 841 memset(&qedi->pf_params.iscsi_pf_params, 0,
842 sizeof(qedi->pf_params.iscsi_pf_params));
843
7ae7ce0b 844 qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev,
ace7f46b 845 qedi->num_queues * sizeof(struct qedi_glbl_q_params),
7ae7ce0b 846 &qedi->hw_p_cpuq, GFP_KERNEL);
ace7f46b 847 if (!qedi->p_cpuq) {
7ae7ce0b 848 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n");
ace7f46b
MR		 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;
962ea1c0 868 qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000;
3d61a313 869 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
ace7f46b
MR		 870
871 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
fa97c511 872 if ((1 << log_page_size) == QEDI_PAGE_SIZE)
ace7f46b
MR		 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 /* RQ BDQ initializations.
881 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
882 * rqe_log_size: 8 for 256B RQE
883 */
884 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
885 /* BDQ address and size */
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 /* cq_num_entries: num_tasks + rq_num_entries */
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;
ace7f46b
MR		 897
898err_alloc_mem:
899 return rval;
900}
901
902/* Free DMA coherent memory for array of queue pointers we pass to qed */
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);
7ae7ce0b 909 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq,
ace7f46b
MR		 910 qedi->hw_p_cpuq);
911 }
912
913 qedi_free_global_queues(qedi);
914
915 kfree(qedi->global_queues);
916}
917
534bbdf8
MR		 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
15d25867 926 snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s\n",
534bbdf8
MR		 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
d5632b11
MR		 990 if (!iscsi_is_session_online(cls_sess))
991 continue;
992
534bbdf8
MR		 993 if (pri_ctrl_flags) {
994 if (!strcmp(pri_tgt->iscsi_name, sess->targetname) &&
995 !strcmp(pri_tgt->ip_addr, ep_ip_addr)) {
996 found = 1;
997 break;
998 }
999 }
1000
1001 if (sec_ctrl_flags) {
1002 if (!strcmp(sec_tgt->iscsi_name, sess->targetname) &&
1003 !strcmp(sec_tgt->ip_addr, ep_ip_addr)) {
1004 found = 1;
1005 break;
1006 }
1007 }
1008 }
1009
1010 if (found) {
1011 if (conn->hdrdgst_en) {
1012 iscsi->header_digest_set = true;
1013 iscsi->header_digest = 1;
1014 }
1015
1016 if (conn->datadgst_en) {
1017 iscsi->data_digest_set = true;
1018 iscsi->data_digest = 1;
1019 }
1020 iscsi->boot_taget_portal_set = true;
1021 iscsi->boot_taget_portal = sess->tpgt;
1022
1023 } else {
1024 ret = -1;
1025 }
1026
1027 if (sec_ctrl_flags)
1028 kfree(sec_tgt);
1029free_tgt:
1030 if (pri_ctrl_flags)
1031 kfree(pri_tgt);
1032
1033 return ret;
1034}
1035
269afb36
MR		 1036static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
1037{
1038 struct qedi_ctx *qedi;
1039
1040 if (!dev) {
1041 QEDI_INFO(NULL, QEDI_LOG_EVT,
1042 "dev is NULL so ignoring get_generic_tlv_data request.\n");
1043 return;
1044 }
1045 qedi = (struct qedi_ctx *)dev;
1046
1047 memset(data, 0, sizeof(struct qed_generic_tlvs));
1048 ether_addr_copy(data->mac[0], qedi->mac);
1049}
1050
534bbdf8
MR		 1051/*
1052 * Protocol TLV handler
1053 */
1054static void qedi_get_protocol_tlv_data(void *dev, void *data)
1055{
1056 struct qed_mfw_tlv_iscsi *iscsi = data;
1057 struct qed_iscsi_stats *fw_iscsi_stats;
1058 struct nvm_iscsi_block *block = NULL;
1059 u32 chap_en = 0, mchap_en = 0;
1060 struct qedi_ctx *qedi = dev;
1061 int rval = 0;
1062
1063 fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL);
1064 if (!fw_iscsi_stats) {
1065 QEDI_ERR(&qedi->dbg_ctx,
1066 "Could not allocate memory for fw_iscsi_stats.\n");
1067 goto exit_get_data;
1068 }
1069
1070 mutex_lock(&qedi->stats_lock);
1071 /* Query firmware for offload stats */
1072 qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats);
1073 mutex_unlock(&qedi->stats_lock);
1074
1075 iscsi->rx_frames_set = true;
1076 iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt;
1077 iscsi->rx_bytes_set = true;
1078 iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt;
1079 iscsi->tx_frames_set = true;
1080 iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt;
1081 iscsi->tx_bytes_set = true;
1082 iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt;
1083 iscsi->frame_size_set = true;
1084 iscsi->frame_size = qedi->ll2_mtu;
1085 block = qedi_get_nvram_block(qedi);
1086 if (block) {
1087 chap_en = !!(block->generic.ctrl_flags &
1088 NVM_ISCSI_CFG_GEN_CHAP_ENABLED);
1089 mchap_en = !!(block->generic.ctrl_flags &
1090 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED);
1091
1092 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false;
1093 iscsi->auth_method = 1;
1094 if (chap_en)
1095 iscsi->auth_method = 2;
1096 if (mchap_en)
1097 iscsi->auth_method = 3;
1098
1099 iscsi->tx_desc_size_set = true;
1100 iscsi->tx_desc_size = QEDI_SQ_SIZE;
1101 iscsi->rx_desc_size_set = true;
1102 iscsi->rx_desc_size = QEDI_CQ_SIZE;
1103
1104 /* tpgt, hdr digest, data digest */
1105 rval = qedi_find_boot_info(qedi, iscsi, block);
1106 if (rval)
1107 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1108 "Boot target not set");
1109 }
1110
1111 kfree(fw_iscsi_stats);
1112exit_get_data:
1113 return;
1114}
1115
ace7f46b
MR		 1116static void qedi_link_update(void *dev, struct qed_link_output *link)
1117{
1118 struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1119
1120 if (link->link_up) {
1121 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
1122 atomic_set(&qedi->link_state, QEDI_LINK_UP);
1123 } else {
1124 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1125 "Link Down event.\n");
1126 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1127 }
1128}
1129
1130static struct qed_iscsi_cb_ops qedi_cb_ops = {
1131 {
1132 .link_update = qedi_link_update,
534bbdf8 1133 .get_protocol_tlv_data = qedi_get_protocol_tlv_data,
269afb36 1134 .get_generic_tlv_data = qedi_get_generic_tlv_data,
ace7f46b
MR		 1135 }
1136};
1137
1138static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
1139 u16 que_idx, struct qedi_percpu_s *p)
1140{
1141 struct qedi_work *qedi_work;
1142 struct qedi_conn *q_conn;
1143 struct iscsi_conn *conn;
1144 struct qedi_cmd *qedi_cmd;
1145 u32 iscsi_cid;
1146 int rc = 0;
1147
1148 iscsi_cid = cqe->cqe_common.conn_id;
1149 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
1150 if (!q_conn) {
1151 QEDI_WARN(&qedi->dbg_ctx,
1152 "Session no longer exists for cid=0x%x!!\n",
1153 iscsi_cid);
1154 return -1;
1155 }
1156 conn = q_conn->cls_conn->dd_data;
1157
1158 switch (cqe->cqe_common.cqe_type) {
1159 case ISCSI_CQE_TYPE_SOLICITED:
1160 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
1161 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
1162 if (!qedi_cmd) {
1163 rc = -1;
1164 break;
1165 }
1166 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
1167 qedi_cmd->cqe_work.qedi = qedi;
1168 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
1169 qedi_cmd->cqe_work.que_idx = que_idx;
1170 qedi_cmd->cqe_work.is_solicited = true;
1171 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
1172 break;
1173 case ISCSI_CQE_TYPE_UNSOLICITED:
1174 case ISCSI_CQE_TYPE_DUMMY:
1175 case ISCSI_CQE_TYPE_TASK_CLEANUP:
1176 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
1177 if (!qedi_work) {
1178 rc = -1;
1179 break;
1180 }
1181 INIT_LIST_HEAD(&qedi_work->list);
1182 qedi_work->qedi = qedi;
1183 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
1184 qedi_work->que_idx = que_idx;
1185 qedi_work->is_solicited = false;
1186 list_add_tail(&qedi_work->list, &p->work_list);
1187 break;
1188 default:
1189 rc = -1;
1190 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
1191 }
1192 return rc;
1193}
1194
1195static bool qedi_process_completions(struct qedi_fastpath *fp)
1196{
1197 struct qedi_ctx *qedi = fp->qedi;
1198 struct qed_sb_info *sb_info = fp->sb_info;
21dd79e8 1199 struct status_block_e4 *sb = sb_info->sb_virt;
ace7f46b
MR		 1200 struct qedi_percpu_s *p = NULL;
1201 struct global_queue *que;
1202 u16 prod_idx;
1203 unsigned long flags;
1204 union iscsi_cqe *cqe;
1205 int cpu;
1206 int ret;
1207
1208 /* Get the current firmware producer index */
1209 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1210
1211 if (prod_idx >= QEDI_CQ_SIZE)
1212 prod_idx = prod_idx % QEDI_CQ_SIZE;
1213
1214 que = qedi->global_queues[fp->sb_id];
1215 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1216 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
1217 que, prod_idx, que->cq_cons_idx, fp->sb_id);
1218
1219 qedi->intr_cpu = fp->sb_id;
1220 cpu = smp_processor_id();
1221 p = &per_cpu(qedi_percpu, cpu);
1222
1223 if (unlikely(!p->iothread))
1224 WARN_ON(1);
1225
1226 spin_lock_irqsave(&p->p_work_lock, flags);
1227 while (que->cq_cons_idx != prod_idx) {
1228 cqe = &que->cq[que->cq_cons_idx];
1229
1230 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1231 "cqe=%p prod_idx=%d cons_idx=%d.\n",
1232 cqe, prod_idx, que->cq_cons_idx);
1233
1234 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1235 if (ret)
a1a20ffd
MR		 1236 QEDI_WARN(&qedi->dbg_ctx,
1237 "Dropping CQE 0x%x for cid=0x%x.\n",
1238 que->cq_cons_idx, cqe->cqe_common.conn_id);
ace7f46b
MR		 1239
1240 que->cq_cons_idx++;
1241 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1242 que->cq_cons_idx = 0;
1243 }
1244 wake_up_process(p->iothread);
1245 spin_unlock_irqrestore(&p->p_work_lock, flags);
1246
1247 return true;
1248}
1249
1250static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1251{
1252 struct qedi_ctx *qedi = fp->qedi;
1253 struct global_queue *que;
1254 struct qed_sb_info *sb_info = fp->sb_info;
21dd79e8 1255 struct status_block_e4 *sb = sb_info->sb_virt;
ace7f46b
MR		 1256 u16 prod_idx;
1257
1258 barrier();
1259
1260 /* Get the current firmware producer index */
1261 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1262
1263 /* Get the pointer to the global CQ this completion is on */
1264 que = qedi->global_queues[fp->sb_id];
1265
1266 /* prod idx wrap around uint16 */
1267 if (prod_idx >= QEDI_CQ_SIZE)
1268 prod_idx = prod_idx % QEDI_CQ_SIZE;
1269
1270 return (que->cq_cons_idx != prod_idx);
1271}
1272
1273/* MSI-X fastpath handler code */
1274static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1275{
1276 struct qedi_fastpath *fp = dev_id;
1277 struct qedi_ctx *qedi = fp->qedi;
1278 bool wake_io_thread = true;
1279
1280 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1281
1282process_again:
1283 wake_io_thread = qedi_process_completions(fp);
1284 if (wake_io_thread) {
1285 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1286 "process already running\n");
1287 }
1288
1289 if (qedi_fp_has_work(fp) == 0)
1290 qed_sb_update_sb_idx(fp->sb_info);
1291
1292 /* Check for more work */
1293 rmb();
1294
1295 if (qedi_fp_has_work(fp) == 0)
1296 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1297 else
1298 goto process_again;
1299
1300 return IRQ_HANDLED;
1301}
1302
1303/* simd handler for MSI/INTa */
1304static void qedi_simd_int_handler(void *cookie)
1305{
1306 /* Cookie is qedi_ctx struct */
1307 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1308
1309 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1310}
1311
1312#define QEDI_SIMD_HANDLER_NUM 0
1313static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1314{
1315 int i;
1316
1317 if (qedi->int_info.msix_cnt) {
1318 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1319 synchronize_irq(qedi->int_info.msix[i].vector);
1320 irq_set_affinity_hint(qedi->int_info.msix[i].vector,
1321 NULL);
1322 free_irq(qedi->int_info.msix[i].vector,
1323 &qedi->fp_array[i]);
1324 }
1325 } else {
1326 qedi_ops->common->simd_handler_clean(qedi->cdev,
1327 QEDI_SIMD_HANDLER_NUM);
1328 }
1329
1330 qedi->int_info.used_cnt = 0;
1331 qedi_ops->common->set_fp_int(qedi->cdev, 0);
1332}
1333
1334static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1335{
1336 int i, rc, cpu;
1337
1338 cpu = cpumask_first(cpu_online_mask);
1a291bce 1339 for (i = 0; i < qedi->int_info.msix_cnt; i++) {
ace7f46b
MR		 1340 rc = request_irq(qedi->int_info.msix[i].vector,
1341 qedi_msix_handler, 0, "qedi",
1342 &qedi->fp_array[i]);
1343
1344 if (rc) {
1345 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1346 qedi_sync_free_irqs(qedi);
1347 return rc;
1348 }
1349 qedi->int_info.used_cnt++;
1350 rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector,
1351 get_cpu_mask(cpu));
1352 cpu = cpumask_next(cpu, cpu_online_mask);
1353 }
1354
1355 return 0;
1356}
1357
1358static int qedi_setup_int(struct qedi_ctx *qedi)
1359{
1360 int rc = 0;
1361
1362 rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus());
1363 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1364 if (rc)
1365 goto exit_setup_int;
1366
1367 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1368 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1369 qedi->int_info.msix_cnt, num_online_cpus());
1370
1371 if (qedi->int_info.msix_cnt) {
1372 rc = qedi_request_msix_irq(qedi);
1373 goto exit_setup_int;
1374 } else {
1375 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1376 QEDI_SIMD_HANDLER_NUM,
1377 qedi_simd_int_handler);
1378 qedi->int_info.used_cnt = 1;
1379 }
1380
1381exit_setup_int:
1382 return rc;
1383}
1384
c57ec8fb
NJ		 1385static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1386{
c77a2fa3 1387 if (qedi->iscsi_image)
c57ec8fb 1388 dma_free_coherent(&qedi->pdev->dev,
c77a2fa3
NJ		 1389 sizeof(struct qedi_nvm_iscsi_image),
1390 qedi->iscsi_image, qedi->nvm_buf_dma);
c57ec8fb
NJ		 1391}
1392
1393static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1394{
c77a2fa3
NJ		 1395 struct qedi_nvm_iscsi_image nvm_image;
1396
750afb08
LC		 1397 qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev,
1398 sizeof(nvm_image),
1399 &qedi->nvm_buf_dma, GFP_KERNEL);
c77a2fa3 1400 if (!qedi->iscsi_image) {
c57ec8fb
NJ		 1401 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1402 return -ENOMEM;
1403 }
1404 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
c77a2fa3 1405 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
c57ec8fb
NJ		 1406 qedi->nvm_buf_dma);
1407
1408 return 0;
1409}
1410
ace7f46b
MR		 1411static void qedi_free_bdq(struct qedi_ctx *qedi)
1412{
1413 int i;
1414
1415 if (qedi->bdq_pbl_list)
fa97c511 1416 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
ace7f46b
MR		 1417 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1418
1419 if (qedi->bdq_pbl)
1420 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1421 qedi->bdq_pbl, qedi->bdq_pbl_dma);
1422
1423 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1424 if (qedi->bdq[i].buf_addr) {
1425 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1426 qedi->bdq[i].buf_addr,
1427 qedi->bdq[i].buf_dma);
1428 }
1429 }
1430}
1431
1432static void qedi_free_global_queues(struct qedi_ctx *qedi)
1433{
1434 int i;
1435 struct global_queue **gl = qedi->global_queues;
1436
1437 for (i = 0; i < qedi->num_queues; i++) {
1438 if (!gl[i])
1439 continue;
1440
1441 if (gl[i]->cq)
1442 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1443 gl[i]->cq, gl[i]->cq_dma);
1444 if (gl[i]->cq_pbl)
1445 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1446 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1447
1448 kfree(gl[i]);
1449 }
1450 qedi_free_bdq(qedi);
c57ec8fb 1451 qedi_free_nvm_iscsi_cfg(qedi);
ace7f46b
MR		 1452}
1453
1454static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1455{
1456 int i;
1457 struct scsi_bd *pbl;
1458 u64 *list;
1459 dma_addr_t page;
1460
1461 /* Alloc dma memory for BDQ buffers */
1462 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1463 qedi->bdq[i].buf_addr =
1464 dma_alloc_coherent(&qedi->pdev->dev,
1465 QEDI_BDQ_BUF_SIZE,
1466 &qedi->bdq[i].buf_dma,
1467 GFP_KERNEL);
1468 if (!qedi->bdq[i].buf_addr) {
1469 QEDI_ERR(&qedi->dbg_ctx,
1470 "Could not allocate BDQ buffer %d.\n", i);
1471 return -ENOMEM;
1472 }
1473 }
1474
1475 /* Alloc dma memory for BDQ page buffer list */
1476 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
fa97c511 1477 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE);
ace7f46b
MR		 1478 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1479
1480 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1481 qedi->rq_num_entries);
1482
1483 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1484 qedi->bdq_pbl_mem_size,
1485 &qedi->bdq_pbl_dma, GFP_KERNEL);
1486 if (!qedi->bdq_pbl) {
1487 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1488 return -ENOMEM;
1489 }
1490
1491 /*
1492 * Populate BDQ PBL with physical and virtual address of individual
1493 * BDQ buffers
1494 */
1495 pbl = (struct scsi_bd *)qedi->bdq_pbl;
1496 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1497 pbl->address.hi =
1498 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1499 pbl->address.lo =
1500 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1501 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1502 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1503 pbl, pbl->address.hi, pbl->address.lo, i);
da090917
TT		 1504 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
1505 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
1506 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
1507 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
ace7f46b
MR		 1508 pbl++;
1509 }
1510
1511 /* Allocate list of PBL pages */
750afb08
LC		 1512 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
1513 QEDI_PAGE_SIZE,
1514 &qedi->bdq_pbl_list_dma,
1515 GFP_KERNEL);
ace7f46b
MR		 1516 if (!qedi->bdq_pbl_list) {
1517 QEDI_ERR(&qedi->dbg_ctx,
1518 "Could not allocate list of PBL pages.\n");
1519 return -ENOMEM;
1520 }
ace7f46b
MR		 1521
1522 /*
1523 * Now populate PBL list with pages that contain pointers to the
1524 * individual buffers.
1525 */
fa97c511
NJ		 1526 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
1527 QEDI_PAGE_SIZE;
ace7f46b
MR		 1528 list = (u64 *)qedi->bdq_pbl_list;
1529 page = qedi->bdq_pbl_list_dma;
1530 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1531 *list = qedi->bdq_pbl_dma;
1532 list++;
fa97c511 1533 page += QEDI_PAGE_SIZE;
ace7f46b
MR		 1534 }
1535
1536 return 0;
1537}
1538
1539static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1540{
1541 u32 *list;
1542 int i;
1543 int status = 0, rc;
1544 u32 *pbl;
1545 dma_addr_t page;
1546 int num_pages;
1547
1548 /*
1549 * Number of global queues (CQ / RQ). This should
1550 * be <= number of available MSIX vectors for the PF
1551 */
1552 if (!qedi->num_queues) {
1553 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1554 return 1;
1555 }
1556
1557 /* Make sure we allocated the PBL that will contain the physical
1558 * addresses of our queues
1559 */
1560 if (!qedi->p_cpuq) {
1561 status = 1;
1562 goto mem_alloc_failure;
1563 }
1564
1565 qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1566 qedi->num_queues), GFP_KERNEL);
1567 if (!qedi->global_queues) {
1568 QEDI_ERR(&qedi->dbg_ctx,
1569 "Unable to allocate global queues array ptr memory\n");
1570 return -ENOMEM;
1571 }
1572 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1573 "qedi->global_queues=%p.\n", qedi->global_queues);
1574
1575 /* Allocate DMA coherent buffers for BDQ */
1576 rc = qedi_alloc_bdq(qedi);
1577 if (rc)
1578 goto mem_alloc_failure;
1579
c57ec8fb
NJ		 1580 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
1581 rc = qedi_alloc_nvm_iscsi_cfg(qedi);
1582 if (rc)
1583 goto mem_alloc_failure;
1584
ace7f46b
MR		 1585 /* Allocate a CQ and an associated PBL for each MSI-X
1586 * vector.
1587 */
1588 for (i = 0; i < qedi->num_queues; i++) {
1589 qedi->global_queues[i] =
1590 kzalloc(sizeof(*qedi->global_queues[0]),
1591 GFP_KERNEL);
1592 if (!qedi->global_queues[i]) {
1593 QEDI_ERR(&qedi->dbg_ctx,
1594 "Unable to allocation global queue %d.\n", i);
1595 goto mem_alloc_failure;
1596 }
1597
1598 qedi->global_queues[i]->cq_mem_size =
1599 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1600 qedi->global_queues[i]->cq_mem_size =
1601 (qedi->global_queues[i]->cq_mem_size +
1602 (QEDI_PAGE_SIZE - 1));
1603
1604 qedi->global_queues[i]->cq_pbl_size =
1605 (qedi->global_queues[i]->cq_mem_size /
1606 QEDI_PAGE_SIZE) * sizeof(void *);
1607 qedi->global_queues[i]->cq_pbl_size =
1608 (qedi->global_queues[i]->cq_pbl_size +
1609 (QEDI_PAGE_SIZE - 1));
1610
750afb08
LC		 1611 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev,
1612 qedi->global_queues[i]->cq_mem_size,
1613 &qedi->global_queues[i]->cq_dma,
1614 GFP_KERNEL);
ace7f46b
MR		 1615
1616 if (!qedi->global_queues[i]->cq) {
1617 QEDI_WARN(&qedi->dbg_ctx,
1618 "Could not allocate cq.\n");
1619 status = -ENOMEM;
1620 goto mem_alloc_failure;
1621 }
750afb08
LC		 1622 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1623 qedi->global_queues[i]->cq_pbl_size,
1624 &qedi->global_queues[i]->cq_pbl_dma,
1625 GFP_KERNEL);
ace7f46b
MR		 1626
1627 if (!qedi->global_queues[i]->cq_pbl) {
1628 QEDI_WARN(&qedi->dbg_ctx,
1629 "Could not allocate cq PBL.\n");
1630 status = -ENOMEM;
1631 goto mem_alloc_failure;
1632 }
ace7f46b
MR		 1633
1634 /* Create PBL */
1635 num_pages = qedi->global_queues[i]->cq_mem_size /
1636 QEDI_PAGE_SIZE;
1637 page = qedi->global_queues[i]->cq_dma;
1638 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1639
1640 while (num_pages--) {
1641 *pbl = (u32)page;
1642 pbl++;
1643 *pbl = (u32)((u64)page >> 32);
1644 pbl++;
1645 page += QEDI_PAGE_SIZE;
1646 }
1647 }
1648
1649 list = (u32 *)qedi->p_cpuq;
1650
1651 /*
1652 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
1653 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
1654 * to the physical address which contains an array of pointers to the
1655 * physical addresses of the specific queue pages.
1656 */
1657 for (i = 0; i < qedi->num_queues; i++) {
1658 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1659 list++;
1660 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1661 list++;
1662
1663 *list = (u32)0;
1664 list++;
1665 *list = (u32)((u64)0 >> 32);
1666 list++;
1667 }
1668
1669 return 0;
1670
1671mem_alloc_failure:
1672 qedi_free_global_queues(qedi);
1673 return status;
1674}
1675
1676int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1677{
1678 int rval = 0;
1679 u32 *pbl;
1680 dma_addr_t page;
1681 int num_pages;
1682
1683 if (!ep)
1684 return -EIO;
1685
1686 /* Calculate appropriate queue and PBL sizes */
1687 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1688 ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1689
1690 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1691 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1692
750afb08
LC		 1693 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1694 &ep->sq_dma, GFP_KERNEL);
ace7f46b
MR		 1695 if (!ep->sq) {
1696 QEDI_WARN(&qedi->dbg_ctx,
1697 "Could not allocate send queue.\n");
1698 rval = -ENOMEM;
1699 goto out;
1700 }
750afb08
LC		 1701 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1702 &ep->sq_pbl_dma, GFP_KERNEL);
ace7f46b
MR		 1703 if (!ep->sq_pbl) {
1704 QEDI_WARN(&qedi->dbg_ctx,
1705 "Could not allocate send queue PBL.\n");
1706 rval = -ENOMEM;
1707 goto out_free_sq;
1708 }
ace7f46b
MR		 1709
1710 /* Create PBL */
1711 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1712 page = ep->sq_dma;
1713 pbl = (u32 *)ep->sq_pbl;
1714
1715 while (num_pages--) {
1716 *pbl = (u32)page;
1717 pbl++;
1718 *pbl = (u32)((u64)page >> 32);
1719 pbl++;
1720 page += QEDI_PAGE_SIZE;
1721 }
1722
1723 return rval;
1724
1725out_free_sq:
1726 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1727 ep->sq_dma);
1728out:
1729 return rval;
1730}
1731
1732void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1733{
1734 if (ep->sq_pbl)
1735 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1736 ep->sq_pbl_dma);
1737 if (ep->sq)
1738 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1739 ep->sq_dma);
1740}
1741
1742int qedi_get_task_idx(struct qedi_ctx *qedi)
1743{
1744 s16 tmp_idx;
1745
1746again:
1747 tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1748 MAX_ISCSI_TASK_ENTRIES);
1749
1750 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1751 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1752 tmp_idx = -1;
1753 goto err_idx;
1754 }
1755
1756 if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1757 goto again;
1758
1759err_idx:
1760 return tmp_idx;
1761}
1762
1763void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1764{
02d94e04 1765 if (!test_and_clear_bit(idx, qedi->task_idx_map))
ace7f46b
MR		 1766 QEDI_ERR(&qedi->dbg_ctx,
1767 "FW task context, already cleared, tid=0x%x\n", idx);
ace7f46b
MR		 1768}
1769
1770void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1771 struct qedi_cmd *cmd)
1772{
1773 qedi->itt_map[tid].itt = proto_itt;
1774 qedi->itt_map[tid].p_cmd = cmd;
1775
1776 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1777 "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1778 qedi->itt_map[tid].itt);
1779}
1780
1781void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1782{
1783 u16 i;
1784
1785 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1786 if (qedi->itt_map[i].itt == itt) {
1787 *tid = i;
1788 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1789 "Ref itt=0x%x, found at tid=0x%x\n",
1790 itt, *tid);
1791 return;
1792 }
1793 }
1794
1795 WARN_ON(1);
1796}
1797
1798void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1799{
1800 *proto_itt = qedi->itt_map[tid].itt;
1801 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1802 "Get itt map tid [0x%x with proto itt[0x%x]",
1803 tid, *proto_itt);
1804}
1805
1806struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1807{
1808 struct qedi_cmd *cmd = NULL;
1809
fa2d9d6e 1810 if (tid >= MAX_ISCSI_TASK_ENTRIES)
ace7f46b
MR		 1811 return NULL;
1812
1813 cmd = qedi->itt_map[tid].p_cmd;
1814 if (cmd->task_id != tid)
1815 return NULL;
1816
1817 qedi->itt_map[tid].p_cmd = NULL;
1818
1819 return cmd;
1820}
1821
1822static int qedi_alloc_itt(struct qedi_ctx *qedi)
1823{
1824 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1825 sizeof(struct qedi_itt_map), GFP_KERNEL);
1826 if (!qedi->itt_map) {
1827 QEDI_ERR(&qedi->dbg_ctx,
1828 "Unable to allocate itt map array memory\n");
1829 return -ENOMEM;
1830 }
1831 return 0;
1832}
1833
1834static void qedi_free_itt(struct qedi_ctx *qedi)
1835{
1836 kfree(qedi->itt_map);
1837}
1838
1839static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1840 .rx_cb = qedi_ll2_rx,
1841 .tx_cb = NULL,
1842};
1843
1844static int qedi_percpu_io_thread(void *arg)
1845{
1846 struct qedi_percpu_s *p = arg;
1847 struct qedi_work *work, *tmp;
1848 unsigned long flags;
1849 LIST_HEAD(work_list);
1850
1851 set_user_nice(current, -20);
1852
1853 while (!kthread_should_stop()) {
1854 spin_lock_irqsave(&p->p_work_lock, flags);
1855 while (!list_empty(&p->work_list)) {
1856 list_splice_init(&p->work_list, &work_list);
1857 spin_unlock_irqrestore(&p->p_work_lock, flags);
1858
1859 list_for_each_entry_safe(work, tmp, &work_list, list) {
1860 list_del_init(&work->list);
1861 qedi_fp_process_cqes(work);
1862 if (!work->is_solicited)
1863 kfree(work);
1864 }
1865 cond_resched();
1866 spin_lock_irqsave(&p->p_work_lock, flags);
1867 }
1868 set_current_state(TASK_INTERRUPTIBLE);
1869 spin_unlock_irqrestore(&p->p_work_lock, flags);
1870 schedule();
1871 }
1872 __set_current_state(TASK_RUNNING);
1873
1874 return 0;
1875}
1876
a98d1a0c 1877static int qedi_cpu_online(unsigned int cpu)
ace7f46b 1878{
a98d1a0c 1879 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
ace7f46b
MR		 1880 struct task_struct *thread;
1881
ace7f46b
MR		 1882 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1883 cpu_to_node(cpu),
1884 "qedi_thread/%d", cpu);
a98d1a0c
TG		 1885 if (IS_ERR(thread))
1886 return PTR_ERR(thread);
1887
1888 kthread_bind(thread, cpu);
1889 p->iothread = thread;
1890 wake_up_process(thread);
1891 return 0;
ace7f46b
MR		 1892}
1893
a98d1a0c 1894static int qedi_cpu_offline(unsigned int cpu)
ace7f46b 1895{
a98d1a0c 1896 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
ace7f46b 1897 struct qedi_work *work, *tmp;
a98d1a0c 1898 struct task_struct *thread;
ace7f46b 1899
ace7f46b
MR		 1900 spin_lock_bh(&p->p_work_lock);
1901 thread = p->iothread;
1902 p->iothread = NULL;
1903
1904 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1905 list_del_init(&work->list);
1906 qedi_fp_process_cqes(work);
1907 if (!work->is_solicited)
1908 kfree(work);
1909 }
1910
1911 spin_unlock_bh(&p->p_work_lock);
1912 if (thread)
1913 kthread_stop(thread);
a98d1a0c 1914 return 0;
ace7f46b
MR		 1915}
1916
ace7f46b
MR		 1917void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
1918{
1919 struct qed_ll2_params params;
1920
1921 qedi_recover_all_conns(qedi);
1922
1923 qedi_ops->ll2->stop(qedi->cdev);
1924 qedi_ll2_free_skbs(qedi);
1925
1926 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
1927 qedi->ll2_mtu, mtu);
1928 memset(&params, 0, sizeof(params));
1929 qedi->ll2_mtu = mtu;
1930 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
1931 params.drop_ttl0_packets = 0;
1932 params.rx_vlan_stripping = 1;
1933 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
1934 qedi_ops->ll2->start(qedi->cdev, &params);
1935}
1936
c57ec8fb
NJ		 1937/**
1938 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
1939 * for gaps) for the matching absolute-pf-id of the QEDI device.
1940 */
1941static struct nvm_iscsi_block *
1942qedi_get_nvram_block(struct qedi_ctx *qedi)
1943{
1944 int i;
1945 u8 pf;
1946 u32 flags;
1947 struct nvm_iscsi_block *block;
1948
1949 pf = qedi->dev_info.common.abs_pf_id;
c77a2fa3 1950 block = &qedi->iscsi_image->iscsi_cfg.block[0];
c57ec8fb
NJ		 1951 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
1952 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
1953 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
1954 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
1955 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
1956 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
1957 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
1958 return block;
1959 }
1960 return NULL;
1961}
1962
1963static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
1964{
1965 struct qedi_ctx *qedi = data;
1966 struct nvm_iscsi_initiator *initiator;
c57ec8fb
NJ		 1967 int rc = 1;
1968 u32 ipv6_en, dhcp_en, ip_len;
1969 struct nvm_iscsi_block *block;
1970 char *fmt, *ip, *sub, *gw;
1971
1972 block = qedi_get_nvram_block(qedi);
1973 if (!block)
1974 return 0;
1975
1976 initiator = &block->initiator;
1977 ipv6_en = block->generic.ctrl_flags &
1978 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
1979 dhcp_en = block->generic.ctrl_flags &
1980 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
1981 /* Static IP assignments. */
1982 fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
1983 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
1984 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
1985 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
1986 initiator->ipv4.subnet_mask.byte;
1987 gw = ipv6_en ? initiator->ipv6.gateway.byte :
1988 initiator->ipv4.gateway.byte;
1989 /* DHCP IP adjustments. */
1990 fmt = dhcp_en ? "%s\n" : fmt;
1991 if (dhcp_en) {
1992 ip = ipv6_en ? "0::0" : "0.0.0.0";
1993 sub = ip;
1994 gw = ip;
1995 ip_len = ipv6_en ? 5 : 8;
1996 }
1997
1998 switch (type) {
1999 case ISCSI_BOOT_ETH_IP_ADDR:
2c08fe64 2000 rc = snprintf(buf, ip_len, fmt, ip);
c57ec8fb
NJ		 2001 break;
2002 case ISCSI_BOOT_ETH_SUBNET_MASK:
2c08fe64 2003 rc = snprintf(buf, ip_len, fmt, sub);
c57ec8fb
NJ		 2004 break;
2005 case ISCSI_BOOT_ETH_GATEWAY:
2c08fe64 2006 rc = snprintf(buf, ip_len, fmt, gw);
c57ec8fb
NJ		 2007 break;
2008 case ISCSI_BOOT_ETH_FLAGS:
2c08fe64 2009 rc = snprintf(buf, 3, "%hhd\n",
c57ec8fb
NJ		 2010 SYSFS_FLAG_FW_SEL_BOOT);
2011 break;
2012 case ISCSI_BOOT_ETH_INDEX:
2c08fe64 2013 rc = snprintf(buf, 3, "0\n");
c57ec8fb
NJ		 2014 break;
2015 case ISCSI_BOOT_ETH_MAC:
2c08fe64 2016 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
c57ec8fb
NJ		 2017 break;
2018 case ISCSI_BOOT_ETH_VLAN:
2c08fe64 2019 rc = snprintf(buf, 12, "%d\n",
c57ec8fb
NJ		 2020 GET_FIELD2(initiator->generic_cont0,
2021 NVM_ISCSI_CFG_INITIATOR_VLAN));
2022 break;
2023 case ISCSI_BOOT_ETH_ORIGIN:
2024 if (dhcp_en)
2c08fe64 2025 rc = snprintf(buf, 3, "3\n");
c57ec8fb
NJ		 2026 break;
2027 default:
2028 rc = 0;
2029 break;
2030 }
2031
2032 return rc;
2033}
2034
2035static umode_t qedi_eth_get_attr_visibility(void *data, int type)
2036{
2037 int rc = 1;
2038
2039 switch (type) {
2040 case ISCSI_BOOT_ETH_FLAGS:
2041 case ISCSI_BOOT_ETH_MAC:
2042 case ISCSI_BOOT_ETH_INDEX:
2043 case ISCSI_BOOT_ETH_IP_ADDR:
2044 case ISCSI_BOOT_ETH_SUBNET_MASK:
2045 case ISCSI_BOOT_ETH_GATEWAY:
2046 case ISCSI_BOOT_ETH_ORIGIN:
2047 case ISCSI_BOOT_ETH_VLAN:
2048 rc = 0444;
2049 break;
2050 default:
2051 rc = 0;
2052 break;
2053 }
2054 return rc;
2055}
2056
2057static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
2058{
2059 struct qedi_ctx *qedi = data;
2060 struct nvm_iscsi_initiator *initiator;
c57ec8fb
NJ		 2061 int rc;
2062 struct nvm_iscsi_block *block;
2063
2064 block = qedi_get_nvram_block(qedi);
2065 if (!block)
2066 return 0;
2067
2068 initiator = &block->initiator;
2069
2070 switch (type) {
2071 case ISCSI_BOOT_INI_INITIATOR_NAME:
2c08fe64 2072 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
1683ce57 2073 initiator->initiator_name.byte);
c57ec8fb
NJ		 2074 break;
2075 default:
2076 rc = 0;
2077 break;
2078 }
2079 return rc;
2080}
2081
2082static umode_t qedi_ini_get_attr_visibility(void *data, int type)
2083{
2084 int rc;
2085
2086 switch (type) {
2087 case ISCSI_BOOT_INI_INITIATOR_NAME:
2088 rc = 0444;
2089 break;
2090 default:
2091 rc = 0;
2092 break;
2093 }
2094 return rc;
2095}
2096
2097static ssize_t
2098qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
2099 char *buf, enum qedi_nvm_tgts idx)
2100{
c57ec8fb
NJ		 2101 int rc = 1;
2102 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
2103 struct nvm_iscsi_block *block;
2104 char *chap_name, *chap_secret;
2105 char *mchap_name, *mchap_secret;
2106
2107 block = qedi_get_nvram_block(qedi);
2108 if (!block)
2109 goto exit_show_tgt_info;
2110
2111 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2112 "Port:%d, tgt_idx:%d\n",
2113 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
2114
2115 ctrl_flags = block->target[idx].ctrl_flags &
2116 NVM_ISCSI_CFG_TARGET_ENABLED;
2117
2118 if (!ctrl_flags) {
2119 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2120 "Target disabled\n");
2121 goto exit_show_tgt_info;
2122 }
2123
2124 ipv6_en = block->generic.ctrl_flags &
2125 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2126 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2127 chap_en = block->generic.ctrl_flags &
2128 NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
2129 chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
2130 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
2131
2132 mchap_en = block->generic.ctrl_flags &
2133 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
2134 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
2135 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
2136
2137 switch (type) {
2138 case ISCSI_BOOT_TGT_NAME:
2c08fe64 2139 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
1683ce57 2140 block->target[idx].target_name.byte);
c57ec8fb
NJ		 2141 break;
2142 case ISCSI_BOOT_TGT_IP_ADDR:
2143 if (ipv6_en)
2c08fe64 2144 rc = snprintf(buf, ip_len, "%pI6\n",
c57ec8fb
NJ		 2145 block->target[idx].ipv6_addr.byte);
2146 else
2c08fe64 2147 rc = snprintf(buf, ip_len, "%pI4\n",
c57ec8fb
NJ		 2148 block->target[idx].ipv4_addr.byte);
2149 break;
2150 case ISCSI_BOOT_TGT_PORT:
2c08fe64 2151 rc = snprintf(buf, 12, "%d\n",
c57ec8fb
NJ		 2152 GET_FIELD2(block->target[idx].generic_cont0,
2153 NVM_ISCSI_CFG_TARGET_TCP_PORT));
2154 break;
2155 case ISCSI_BOOT_TGT_LUN:
2c08fe64 2156 rc = snprintf(buf, 22, "%.*d\n",
c57ec8fb
NJ		 2157 block->target[idx].lun.value[1],
2158 block->target[idx].lun.value[0]);
2159 break;
2160 case ISCSI_BOOT_TGT_CHAP_NAME:
2c08fe64 2161 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1683ce57 2162 chap_name);
c57ec8fb
NJ		 2163 break;
2164 case ISCSI_BOOT_TGT_CHAP_SECRET:
2c08fe64 2165 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1683ce57 2166 chap_secret);
c57ec8fb
NJ		 2167 break;
2168 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2c08fe64 2169 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1683ce57 2170 mchap_name);
c57ec8fb
NJ		 2171 break;
2172 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2c08fe64 2173 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1683ce57 2174 mchap_secret);
c57ec8fb
NJ		 2175 break;
2176 case ISCSI_BOOT_TGT_FLAGS:
2c08fe64 2177 rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
c57ec8fb
NJ		 2178 break;
2179 case ISCSI_BOOT_TGT_NIC_ASSOC:
2c08fe64 2180 rc = snprintf(buf, 3, "0\n");
c57ec8fb
NJ		 2181 break;
2182 default:
2183 rc = 0;
2184 break;
2185 }
2186
2187exit_show_tgt_info:
2188 return rc;
2189}
2190
2191static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
2192{
2193 struct qedi_ctx *qedi = data;
2194
2195 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
2196}
2197
2198static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
2199{
2200 struct qedi_ctx *qedi = data;
2201
2202 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
2203}
2204
2205static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
2206{
2207 int rc;
2208
2209 switch (type) {
2210 case ISCSI_BOOT_TGT_NAME:
2211 case ISCSI_BOOT_TGT_IP_ADDR:
2212 case ISCSI_BOOT_TGT_PORT:
2213 case ISCSI_BOOT_TGT_LUN:
2214 case ISCSI_BOOT_TGT_CHAP_NAME:
2215 case ISCSI_BOOT_TGT_CHAP_SECRET:
2216 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2217 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2218 case ISCSI_BOOT_TGT_NIC_ASSOC:
2219 case ISCSI_BOOT_TGT_FLAGS:
2220 rc = 0444;
2221 break;
2222 default:
2223 rc = 0;
2224 break;
2225 }
2226 return rc;
2227}
2228
2229static void qedi_boot_release(void *data)
2230{
2231 struct qedi_ctx *qedi = data;
2232
2233 scsi_host_put(qedi->shost);
2234}
2235
2236static int qedi_get_boot_info(struct qedi_ctx *qedi)
2237{
2238 int ret = 1;
c77a2fa3 2239 struct qedi_nvm_iscsi_image nvm_image;
c57ec8fb
NJ		 2240
2241 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2242 "Get NVM iSCSI CFG image\n");
2243 ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2244 QED_NVM_IMAGE_ISCSI_CFG,
c77a2fa3
NJ		 2245 (char *)qedi->iscsi_image,
2246 sizeof(nvm_image));
c57ec8fb
NJ		 2247 if (ret)
2248 QEDI_ERR(&qedi->dbg_ctx,
2249 "Could not get NVM image. ret = %d\n", ret);
2250
2251 return ret;
2252}
2253
2254static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2255{
2256 struct iscsi_boot_kobj *boot_kobj;
2257
2258 if (qedi_get_boot_info(qedi))
2259 return -EPERM;
2260
2261 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2262 if (!qedi->boot_kset)
2263 goto kset_free;
2264
2265 if (!scsi_host_get(qedi->shost))
2266 goto kset_free;
2267
2268 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2269 qedi_show_boot_tgt_pri_info,
2270 qedi_tgt_get_attr_visibility,
2271 qedi_boot_release);
2272 if (!boot_kobj)
2273 goto put_host;
2274
2275 if (!scsi_host_get(qedi->shost))
2276 goto kset_free;
2277
2278 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2279 qedi_show_boot_tgt_sec_info,
2280 qedi_tgt_get_attr_visibility,
2281 qedi_boot_release);
2282 if (!boot_kobj)
2283 goto put_host;
2284
2285 if (!scsi_host_get(qedi->shost))
2286 goto kset_free;
2287
2288 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2289 qedi_show_boot_ini_info,
2290 qedi_ini_get_attr_visibility,
2291 qedi_boot_release);
2292 if (!boot_kobj)
2293 goto put_host;
2294
2295 if (!scsi_host_get(qedi->shost))
2296 goto kset_free;
2297
2298 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2299 qedi_show_boot_eth_info,
2300 qedi_eth_get_attr_visibility,
2301 qedi_boot_release);
2302 if (!boot_kobj)
2303 goto put_host;
2304
2305 return 0;
2306
2307put_host:
2308 scsi_host_put(qedi->shost);
2309kset_free:
2310 iscsi_boot_destroy_kset(qedi->boot_kset);
2311 return -ENOMEM;
2312}
2313
ace7f46b
MR		 2314static void __qedi_remove(struct pci_dev *pdev, int mode)
2315{
2316 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
a3440d0d 2317 int rval;
ace7f46b
MR		 2318
2319 if (qedi->tmf_thread) {
2320 flush_workqueue(qedi->tmf_thread);
2321 destroy_workqueue(qedi->tmf_thread);
2322 qedi->tmf_thread = NULL;
2323 }
2324
2325 if (qedi->offload_thread) {
2326 flush_workqueue(qedi->offload_thread);
2327 destroy_workqueue(qedi->offload_thread);
2328 qedi->offload_thread = NULL;
2329 }
2330
2331#ifdef CONFIG_DEBUG_FS
2332 qedi_dbg_host_exit(&qedi->dbg_ctx);
2333#endif
2334 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2335 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2336
2337 qedi_sync_free_irqs(qedi);
2338
2339 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2340 qedi_ops->stop(qedi->cdev);
2341 qedi_ops->ll2->stop(qedi->cdev);
2342 }
2343
2344 if (mode == QEDI_MODE_NORMAL)
2345 qedi_free_iscsi_pf_param(qedi);
2346
a3440d0d
MR		 2347 rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
2348 if (rval)
2349 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
2350
ace7f46b
MR		 2351 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2352 qedi_ops->common->slowpath_stop(qedi->cdev);
2353 qedi_ops->common->remove(qedi->cdev);
2354 }
2355
2356 qedi_destroy_fp(qedi);
2357
2358 if (mode == QEDI_MODE_NORMAL) {
2359 qedi_release_cid_que(qedi);
2360 qedi_cm_free_mem(qedi);
2361 qedi_free_uio(qedi->udev);
2362 qedi_free_itt(qedi);
2363
2364 iscsi_host_remove(qedi->shost);
2365 iscsi_host_free(qedi->shost);
2366
2367 if (qedi->ll2_recv_thread) {
2368 kthread_stop(qedi->ll2_recv_thread);
2369 qedi->ll2_recv_thread = NULL;
2370 }
2371 qedi_ll2_free_skbs(qedi);
c57ec8fb
NJ		 2372
2373 if (qedi->boot_kset)
2374 iscsi_boot_destroy_kset(qedi->boot_kset);
ace7f46b
MR		 2375 }
2376}
2377
2378static int __qedi_probe(struct pci_dev *pdev, int mode)
2379{
2380 struct qedi_ctx *qedi;
2381 struct qed_ll2_params params;
2382 u32 dp_module = 0;
2383 u8 dp_level = 0;
2384 bool is_vf = false;
2385 char host_buf[16];
2386 struct qed_link_params link_params;
2387 struct qed_slowpath_params sp_params;
2388 struct qed_probe_params qed_params;
2389 void *task_start, *task_end;
2390 int rc;
2391 u16 tmp;
2392
2393 if (mode != QEDI_MODE_RECOVERY) {
2394 qedi = qedi_host_alloc(pdev);
2395 if (!qedi) {
2396 rc = -ENOMEM;
2397 goto exit_probe;
2398 }
2399 } else {
2400 qedi = pci_get_drvdata(pdev);
2401 }
2402
2403 memset(&qed_params, 0, sizeof(qed_params));
2404 qed_params.protocol = QED_PROTOCOL_ISCSI;
2405 qed_params.dp_module = dp_module;
2406 qed_params.dp_level = dp_level;
2407 qed_params.is_vf = is_vf;
2408 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2409 if (!qedi->cdev) {
2410 rc = -ENODEV;
2411 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2412 goto free_host;
2413 }
2414
ace7f46b
MR		 2415 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2416
42d7c10f
MR		 2417 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2418 if (rc)
2419 goto free_host;
2420
ace7f46b
MR		 2421 if (mode != QEDI_MODE_RECOVERY) {
2422 rc = qedi_set_iscsi_pf_param(qedi);
2423 if (rc) {
2424 rc = -ENOMEM;
2425 QEDI_ERR(&qedi->dbg_ctx,
2426 "Set iSCSI pf param fail\n");
2427 goto free_host;
2428 }
2429 }
2430
2431 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2432
2433 rc = qedi_prepare_fp(qedi);
2434 if (rc) {
2435 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2436 goto free_pf_params;
2437 }
2438
2439 /* Start the Slowpath-process */
2440 memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2441 sp_params.int_mode = QED_INT_MODE_MSIX;
2442 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2443 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2444 sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2445 sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2446 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2447 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2448 if (rc) {
2449 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2450 goto stop_hw;
2451 }
2452
2453 /* update_pf_params needs to be called before and after slowpath
2454 * start
2455 */
2456 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2457
d1a9ccc4 2458 rc = qedi_setup_int(qedi);
ace7f46b
MR		 2459 if (rc)
2460 goto stop_iscsi_func;
2461
2462 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2463
2464 /* Learn information crucial for qedi to progress */
2465 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2466 if (rc)
2467 goto stop_iscsi_func;
2468
2469 /* Record BDQ producer doorbell addresses */
2470 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2471 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2472 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2473 "BDQ primary_prod=%p secondary_prod=%p.\n",
2474 qedi->bdq_primary_prod,
2475 qedi->bdq_secondary_prod);
2476
2477 /*
2478 * We need to write the number of BDs in the BDQ we've preallocated so
2479 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
2480 * packet arrives.
2481 */
2482 qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2483 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2484 "Writing %d to primary and secondary BDQ doorbell registers.\n",
2485 qedi->bdq_prod_idx);
2486 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2487 tmp = readw(qedi->bdq_primary_prod);
2488 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2489 tmp = readw(qedi->bdq_secondary_prod);
2490
2491 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2492 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2493 qedi->mac);
2494
2495 sprintf(host_buf, "host_%d", qedi->shost->host_no);
712c3cbf 2496 qedi_ops->common->set_name(qedi->cdev, host_buf);
ace7f46b
MR		 2497
2498 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2499
2500 memset(&params, 0, sizeof(params));
2501 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2502 qedi->ll2_mtu = DEF_PATH_MTU;
2503 params.drop_ttl0_packets = 0;
2504 params.rx_vlan_stripping = 1;
2505 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2506
2507 if (mode != QEDI_MODE_RECOVERY) {
2508 /* set up rx path */
2509 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2510 spin_lock_init(&qedi->ll2_lock);
2511 /* start qedi context */
2512 spin_lock_init(&qedi->hba_lock);
2513 spin_lock_init(&qedi->task_idx_lock);
3cc5746e 2514 mutex_init(&qedi->stats_lock);
ace7f46b
MR		 2515 }
2516 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2517 qedi_ops->ll2->start(qedi->cdev, &params);
2518
2519 if (mode != QEDI_MODE_RECOVERY) {
2520 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2521 (void *)qedi,
2522 "qedi_ll2_thread");
2523 }
2524
2525 rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2526 qedi, qedi_iscsi_event_cb);
2527 if (rc) {
2528 rc = -ENODEV;
2529 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2530 goto stop_slowpath;
2531 }
2532
2533 task_start = qedi_get_task_mem(&qedi->tasks, 0);
2534 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2535 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2536 "Task context start=%p, end=%p block_size=%u.\n",
2537 task_start, task_end, qedi->tasks.size);
2538
2539 memset(&link_params, 0, sizeof(link_params));
2540 link_params.link_up = true;
2541 rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2542 if (rc) {
2543 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2544 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2545 }
2546
2547#ifdef CONFIG_DEBUG_FS
779936fa
AB		 2548 qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops,
2549 qedi_dbg_fops);
ace7f46b
MR		 2550#endif
2551 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2552 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2553 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2554 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2555
2556 if (mode == QEDI_MODE_NORMAL) {
2557 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2558 QEDI_ERR(&qedi->dbg_ctx,
2559 "Could not add iscsi host\n");
2560 rc = -ENOMEM;
2561 goto remove_host;
2562 }
2563
2564 /* Allocate uio buffers */
2565 rc = qedi_alloc_uio_rings(qedi);
2566 if (rc) {
2567 QEDI_ERR(&qedi->dbg_ctx,
2568 "UIO alloc ring failed err=%d\n", rc);
2569 goto remove_host;
2570 }
2571
2572 rc = qedi_init_uio(qedi);
2573 if (rc) {
2574 QEDI_ERR(&qedi->dbg_ctx,
2575 "UIO init failed, err=%d\n", rc);
2576 goto free_uio;
2577 }
2578
2579 /* host the array on iscsi_conn */
2580 rc = qedi_setup_cid_que(qedi);
2581 if (rc) {
2582 QEDI_ERR(&qedi->dbg_ctx,
2583 "Could not setup cid que\n");
2584 goto free_uio;
2585 }
2586
2587 rc = qedi_cm_alloc_mem(qedi);
2588 if (rc) {
2589 QEDI_ERR(&qedi->dbg_ctx,
2590 "Could not alloc cm memory\n");
2591 goto free_cid_que;
2592 }
2593
2594 rc = qedi_alloc_itt(qedi);
2595 if (rc) {
2596 QEDI_ERR(&qedi->dbg_ctx,
2597 "Could not alloc itt memory\n");
2598 goto free_cid_que;
2599 }
2600
2601 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2602 qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2603 if (!qedi->tmf_thread) {
2604 QEDI_ERR(&qedi->dbg_ctx,
2605 "Unable to start tmf thread!\n");
2606 rc = -ENODEV;
2607 goto free_cid_que;
2608 }
2609
2610 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2611 qedi->offload_thread = create_workqueue(host_buf);
2612 if (!qedi->offload_thread) {
2613 QEDI_ERR(&qedi->dbg_ctx,
2614 "Unable to start offload thread!\n");
2615 rc = -ENODEV;
2616 goto free_cid_que;
2617 }
2618
2619 /* F/w needs 1st task context memory entry for performance */
2620 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2621 atomic_set(&qedi->num_offloads, 0);
c57ec8fb
NJ		 2622
2623 if (qedi_setup_boot_info(qedi))
2624 QEDI_ERR(&qedi->dbg_ctx,
2625 "No iSCSI boot target configured\n");
a3440d0d
MR		 2626
2627 rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
2628 if (rc)
2629 QEDI_ERR(&qedi->dbg_ctx,
2630 "Failed to send drv state to MFW\n");
2631
ace7f46b
MR		 2632 }
2633
2634 return 0;
2635
2636free_cid_que:
2637 qedi_release_cid_que(qedi);
2638free_uio:
2639 qedi_free_uio(qedi->udev);
2640remove_host:
2641#ifdef CONFIG_DEBUG_FS
2642 qedi_dbg_host_exit(&qedi->dbg_ctx);
2643#endif
2644 iscsi_host_remove(qedi->shost);
2645stop_iscsi_func:
2646 qedi_ops->stop(qedi->cdev);
2647stop_slowpath:
2648 qedi_ops->common->slowpath_stop(qedi->cdev);
2649stop_hw:
2650 qedi_ops->common->remove(qedi->cdev);
2651free_pf_params:
2652 qedi_free_iscsi_pf_param(qedi);
2653free_host:
2654 iscsi_host_free(qedi->shost);
2655exit_probe:
2656 return rc;
2657}
2658
2659static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2660{
2661 return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2662}
2663
2664static void qedi_remove(struct pci_dev *pdev)
2665{
2666 __qedi_remove(pdev, QEDI_MODE_NORMAL);
2667}
2668
2669static struct pci_device_id qedi_pci_tbl[] = {
2670 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
04688525 2671 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
ace7f46b
MR		 2672 { 0 },
2673};
2674MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2675
a98d1a0c
TG		 2676static enum cpuhp_state qedi_cpuhp_state;
2677
ace7f46b
MR		 2678static struct pci_driver qedi_pci_driver = {
2679 .name = QEDI_MODULE_NAME,
2680 .id_table = qedi_pci_tbl,
2681 .probe = qedi_probe,
2682 .remove = qedi_remove,
2683};
2684
2685static int __init qedi_init(void)
2686{
ace7f46b 2687 struct qedi_percpu_s *p;
a98d1a0c 2688 int cpu, rc = 0;
ace7f46b
MR		 2689
2690 qedi_ops = qed_get_iscsi_ops();
2691 if (!qedi_ops) {
2692 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
a98d1a0c 2693 return -EINVAL;
ace7f46b
MR		 2694 }
2695
2696#ifdef CONFIG_DEBUG_FS
2697 qedi_dbg_init("qedi");
2698#endif
2699
2700 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2701 if (!qedi_scsi_transport) {
2702 QEDI_ERR(NULL, "Could not register qedi transport");
2703 rc = -ENOMEM;
2704 goto exit_qedi_init_1;
2705 }
2706
ace7f46b
MR		 2707 for_each_possible_cpu(cpu) {
2708 p = &per_cpu(qedi_percpu, cpu);
2709 INIT_LIST_HEAD(&p->work_list);
2710 spin_lock_init(&p->p_work_lock);
2711 p->iothread = NULL;
2712 }
2713
a98d1a0c
TG		 2714 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2715 qedi_cpu_online, qedi_cpu_offline);
2716 if (rc < 0)
2717 goto exit_qedi_init_2;
2718 qedi_cpuhp_state = rc;
ace7f46b 2719
a98d1a0c
TG		 2720 rc = pci_register_driver(&qedi_pci_driver);
2721 if (rc) {
2722 QEDI_ERR(NULL, "Failed to register driver\n");
2723 goto exit_qedi_hp;
2724 }
2725
2726 return 0;
ace7f46b 2727
a98d1a0c
TG		 2728exit_qedi_hp:
2729 cpuhp_remove_state(qedi_cpuhp_state);
ace7f46b
MR		 2730exit_qedi_init_2:
2731 iscsi_unregister_transport(&qedi_iscsi_transport);
2732exit_qedi_init_1:
2733#ifdef CONFIG_DEBUG_FS
2734 qedi_dbg_exit();
2735#endif
2736 qed_put_iscsi_ops();
ace7f46b
MR		 2737 return rc;
2738}
2739
2740static void __exit qedi_cleanup(void)
2741{
ace7f46b 2742 pci_unregister_driver(&qedi_pci_driver);
a98d1a0c 2743 cpuhp_remove_state(qedi_cpuhp_state);
ace7f46b
MR		 2744 iscsi_unregister_transport(&qedi_iscsi_transport);
2745
2746#ifdef CONFIG_DEBUG_FS
2747 qedi_dbg_exit();
2748#endif
2749 qed_put_iscsi_ops();
2750}
2751
2752MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2753MODULE_LICENSE("GPL");
2754MODULE_AUTHOR("QLogic Corporation");
2755MODULE_VERSION(QEDI_MODULE_VERSION);
2756module_init(qedi_init);
2757module_exit(qedi_cleanup);
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