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sched: Simplify cpu-hot-unplug task migration
[linux-2.6/x86.git] / drivers / scsi / be2iscsi / be_cmds.c
blobad246369d373e0802bba99efb0c1003e5bd959fe
1 /**
2 * Copyright (C) 2005 - 2010 ServerEngines
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
9 *
10 * Contact Information:
11 * linux-drivers@serverengines.com
12 *
13 * ServerEngines
14 * 209 N. Fair Oaks Ave
15 * Sunnyvale, CA 94085
16 */
17
18 #include "be.h"
19 #include "be_mgmt.h"
20 #include "be_main.h"
21
22 int beiscsi_pci_soft_reset(struct beiscsi_hba *phba)
23 {
24 u32 sreset;
25 u8 *pci_reset_offset = 0;
26 u8 *pci_online0_offset = 0;
27 u8 *pci_online1_offset = 0;
28 u32 pconline0 = 0;
29 u32 pconline1 = 0;
30 u32 i;
31
32 pci_reset_offset = (u8 *)phba->pci_va + BE2_SOFT_RESET;
33 pci_online0_offset = (u8 *)phba->pci_va + BE2_PCI_ONLINE0;
34 pci_online1_offset = (u8 *)phba->pci_va + BE2_PCI_ONLINE1;
35 sreset = readl((void *)pci_reset_offset);
36 sreset |= BE2_SET_RESET;
37 writel(sreset, (void *)pci_reset_offset);
38
39 i = 0;
40 while (sreset & BE2_SET_RESET) {
41 if (i > 64)
42 break;
43 msleep(100);
44 sreset = readl((void *)pci_reset_offset);
45 i++;
46 }
47
48 if (sreset & BE2_SET_RESET) {
49 printk(KERN_ERR "Soft Reset did not deassert\n");
50 return -EIO;
51 }
52 pconline1 = BE2_MPU_IRAM_ONLINE;
53 writel(pconline0, (void *)pci_online0_offset);
54 writel(pconline1, (void *)pci_online1_offset);
55
56 sreset = BE2_SET_RESET;
57 writel(sreset, (void *)pci_reset_offset);
58
59 i = 0;
60 while (sreset & BE2_SET_RESET) {
61 if (i > 64)
62 break;
63 msleep(1);
64 sreset = readl((void *)pci_reset_offset);
65 i++;
66 }
67 if (sreset & BE2_SET_RESET) {
68 printk(KERN_ERR "MPU Online Soft Reset did not deassert\n");
69 return -EIO;
70 }
71 return 0;
72 }
73
74 int be_chk_reset_complete(struct beiscsi_hba *phba)
75 {
76 unsigned int num_loop;
77 u8 *mpu_sem = 0;
78 u32 status;
79
80 num_loop = 1000;
81 mpu_sem = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE;
82 msleep(5000);
83
84 while (num_loop) {
85 status = readl((void *)mpu_sem);
86
87 if ((status & 0x80000000) || (status & 0x0000FFFF) == 0xC000)
88 break;
89 msleep(60);
90 num_loop--;
91 }
92
93 if ((status & 0x80000000) || (!num_loop)) {
94 printk(KERN_ERR "Failed in be_chk_reset_complete"
95 "status = 0x%x\n", status);
96 return -EIO;
97 }
98
99 return 0;
100 }
101
102 void be_mcc_notify(struct beiscsi_hba *phba)
103 {
104 struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
105 u32 val = 0;
106
107 val |= mccq->id & DB_MCCQ_RING_ID_MASK;
108 val |= 1 << DB_MCCQ_NUM_POSTED_SHIFT;
109 iowrite32(val, phba->db_va + DB_MCCQ_OFFSET);
110 }
111
112 unsigned int alloc_mcc_tag(struct beiscsi_hba *phba)
113 {
114 unsigned int tag = 0;
115
116 if (phba->ctrl.mcc_tag_available) {
117 tag = phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index];
118 phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index] = 0;
119 phba->ctrl.mcc_numtag[tag] = 0;
120 }
121 if (tag) {
122 phba->ctrl.mcc_tag_available--;
123 if (phba->ctrl.mcc_alloc_index == (MAX_MCC_CMD - 1))
124 phba->ctrl.mcc_alloc_index = 0;
125 else
126 phba->ctrl.mcc_alloc_index++;
127 }
128 return tag;
129 }
130
131 void free_mcc_tag(struct be_ctrl_info *ctrl, unsigned int tag)
132 {
133 spin_lock(&ctrl->mbox_lock);
134 tag = tag & 0x000000FF;
135 ctrl->mcc_tag[ctrl->mcc_free_index] = tag;
136 if (ctrl->mcc_free_index == (MAX_MCC_CMD - 1))
137 ctrl->mcc_free_index = 0;
138 else
139 ctrl->mcc_free_index++;
140 ctrl->mcc_tag_available++;
141 spin_unlock(&ctrl->mbox_lock);
142 }
143
144 bool is_link_state_evt(u32 trailer)
145 {
146 return (((trailer >> ASYNC_TRAILER_EVENT_CODE_SHIFT) &
147 ASYNC_TRAILER_EVENT_CODE_MASK) ==
148 ASYNC_EVENT_CODE_LINK_STATE);
149 }
150
151 static inline bool be_mcc_compl_is_new(struct be_mcc_compl *compl)
152 {
153 if (compl->flags != 0) {
154 compl->flags = le32_to_cpu(compl->flags);
155 WARN_ON((compl->flags & CQE_FLAGS_VALID_MASK) == 0);
156 return true;
157 } else
158 return false;
159 }
160
161 static inline void be_mcc_compl_use(struct be_mcc_compl *compl)
162 {
163 compl->flags = 0;
164 }
165
166 static int be_mcc_compl_process(struct be_ctrl_info *ctrl,
167 struct be_mcc_compl *compl)
168 {
169 u16 compl_status, extd_status;
170
171 be_dws_le_to_cpu(compl, 4);
172
173 compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
174 CQE_STATUS_COMPL_MASK;
175 if (compl_status != MCC_STATUS_SUCCESS) {
176 extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
177 CQE_STATUS_EXTD_MASK;
178 dev_err(&ctrl->pdev->dev,
179 "error in cmd completion: status(compl/extd)=%d/%d\n",
180 compl_status, extd_status);
181 return -EBUSY;
182 }
183 return 0;
184 }
185
186 int be_mcc_compl_process_isr(struct be_ctrl_info *ctrl,
187 struct be_mcc_compl *compl)
188 {
189 u16 compl_status, extd_status;
190 unsigned short tag;
191
192 be_dws_le_to_cpu(compl, 4);
193
194 compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
195 CQE_STATUS_COMPL_MASK;
196 /* The ctrl.mcc_numtag[tag] is filled with
197 * [31] = valid, [30:24] = Rsvd, [23:16] = wrb, [15:8] = extd_status,
198 * [7:0] = compl_status
199 */
200 tag = (compl->tag0 & 0x000000FF);
201 extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
202 CQE_STATUS_EXTD_MASK;
203
204 ctrl->mcc_numtag[tag] = 0x80000000;
205 ctrl->mcc_numtag[tag] |= (compl->tag0 & 0x00FF0000);
206 ctrl->mcc_numtag[tag] |= (extd_status & 0x000000FF) << 8;
207 ctrl->mcc_numtag[tag] |= (compl_status & 0x000000FF);
208 wake_up_interruptible(&ctrl->mcc_wait[tag]);
209 return 0;
210 }
211
212 static struct be_mcc_compl *be_mcc_compl_get(struct beiscsi_hba *phba)
213 {
214 struct be_queue_info *mcc_cq = &phba->ctrl.mcc_obj.cq;
215 struct be_mcc_compl *compl = queue_tail_node(mcc_cq);
216
217 if (be_mcc_compl_is_new(compl)) {
218 queue_tail_inc(mcc_cq);
219 return compl;
220 }
221 return NULL;
222 }
223
224 static void be2iscsi_fail_session(struct iscsi_cls_session *cls_session)
225 {
226 iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED);
227 }
228
229 void beiscsi_async_link_state_process(struct beiscsi_hba *phba,
230 struct be_async_event_link_state *evt)
231 {
232 switch (evt->port_link_status) {
233 case ASYNC_EVENT_LINK_DOWN:
234 SE_DEBUG(DBG_LVL_1, "Link Down on Physical Port %d\n",
235 evt->physical_port);
236 phba->state |= BE_ADAPTER_LINK_DOWN;
237 iscsi_host_for_each_session(phba->shost,
238 be2iscsi_fail_session);
239 break;
240 case ASYNC_EVENT_LINK_UP:
241 phba->state = BE_ADAPTER_UP;
242 SE_DEBUG(DBG_LVL_1, "Link UP on Physical Port %d\n",
243 evt->physical_port);
244 break;
245 default:
246 SE_DEBUG(DBG_LVL_1, "Unexpected Async Notification %d on"
247 "Physical Port %d\n",
248 evt->port_link_status,
249 evt->physical_port);
250 }
251 }
252
253 static void beiscsi_cq_notify(struct beiscsi_hba *phba, u16 qid, bool arm,
254 u16 num_popped)
255 {
256 u32 val = 0;
257 val |= qid & DB_CQ_RING_ID_MASK;
258 if (arm)
259 val |= 1 << DB_CQ_REARM_SHIFT;
260 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
261 iowrite32(val, phba->db_va + DB_CQ_OFFSET);
262 }
263
264
265 int beiscsi_process_mcc(struct beiscsi_hba *phba)
266 {
267 struct be_mcc_compl *compl;
268 int num = 0, status = 0;
269 struct be_ctrl_info *ctrl = &phba->ctrl;
270
271 spin_lock_bh(&phba->ctrl.mcc_cq_lock);
272 while ((compl = be_mcc_compl_get(phba))) {
273 if (compl->flags & CQE_FLAGS_ASYNC_MASK) {
274 /* Interpret flags as an async trailer */
275 if (is_link_state_evt(compl->flags))
276 /* Interpret compl as a async link evt */
277 beiscsi_async_link_state_process(phba,
278 (struct be_async_event_link_state *) compl);
279 else
280 SE_DEBUG(DBG_LVL_1,
281 " Unsupported Async Event, flags"
282 " = 0x%08x\n", compl->flags);
283
284 } else if (compl->flags & CQE_FLAGS_COMPLETED_MASK) {
285 status = be_mcc_compl_process(ctrl, compl);
286 atomic_dec(&phba->ctrl.mcc_obj.q.used);
287 }
288 be_mcc_compl_use(compl);
289 num++;
290 }
291
292 if (num)
293 beiscsi_cq_notify(phba, phba->ctrl.mcc_obj.cq.id, true, num);
294
295 spin_unlock_bh(&phba->ctrl.mcc_cq_lock);
296 return status;
297 }
298
299 /* Wait till no more pending mcc requests are present */
300 static int be_mcc_wait_compl(struct beiscsi_hba *phba)
301 {
302 int i, status;
303 for (i = 0; i < mcc_timeout; i++) {
304 status = beiscsi_process_mcc(phba);
305 if (status)
306 return status;
307
308 if (atomic_read(&phba->ctrl.mcc_obj.q.used) == 0)
309 break;
310 udelay(100);
311 }
312 if (i == mcc_timeout) {
313 dev_err(&phba->pcidev->dev, "mccq poll timed out\n");
314 return -EBUSY;
315 }
316 return 0;
317 }
318
319 /* Notify MCC requests and wait for completion */
320 int be_mcc_notify_wait(struct beiscsi_hba *phba)
321 {
322 be_mcc_notify(phba);
323 return be_mcc_wait_compl(phba);
324 }
325
326 static int be_mbox_db_ready_wait(struct be_ctrl_info *ctrl)
327 {
328 #define long_delay 2000
329 void __iomem *db = ctrl->db + MPU_MAILBOX_DB_OFFSET;
330 int cnt = 0, wait = 5; /* in usecs */
331 u32 ready;
332
333 do {
334 ready = ioread32(db) & MPU_MAILBOX_DB_RDY_MASK;
335 if (ready)
336 break;
337
338 if (cnt > 12000000) {
339 dev_err(&ctrl->pdev->dev, "mbox_db poll timed out\n");
340 return -EBUSY;
341 }
342
343 if (cnt > 50) {
344 wait = long_delay;
345 mdelay(long_delay / 1000);
346 } else
347 udelay(wait);
348 cnt += wait;
349 } while (true);
350 return 0;
351 }
352
353 int be_mbox_notify(struct be_ctrl_info *ctrl)
354 {
355 int status;
356 u32 val = 0;
357 void __iomem *db = ctrl->db + MPU_MAILBOX_DB_OFFSET;
358 struct be_dma_mem *mbox_mem = &ctrl->mbox_mem;
359 struct be_mcc_mailbox *mbox = mbox_mem->va;
360 struct be_mcc_compl *compl = &mbox->compl;
361
362 val &= ~MPU_MAILBOX_DB_RDY_MASK;
363 val |= MPU_MAILBOX_DB_HI_MASK;
364 val |= (upper_32_bits(mbox_mem->dma) >> 2) << 2;
365 iowrite32(val, db);
366
367 status = be_mbox_db_ready_wait(ctrl);
368 if (status != 0) {
369 SE_DEBUG(DBG_LVL_1, " be_mbox_db_ready_wait failed\n");
370 return status;
371 }
372 val = 0;
373 val &= ~MPU_MAILBOX_DB_RDY_MASK;
374 val &= ~MPU_MAILBOX_DB_HI_MASK;
375 val |= (u32) (mbox_mem->dma >> 4) << 2;
376 iowrite32(val, db);
377
378 status = be_mbox_db_ready_wait(ctrl);
379 if (status != 0) {
380 SE_DEBUG(DBG_LVL_1, " be_mbox_db_ready_wait failed\n");
381 return status;
382 }
383 if (be_mcc_compl_is_new(compl)) {
384 status = be_mcc_compl_process(ctrl, &mbox->compl);
385 be_mcc_compl_use(compl);
386 if (status) {
387 SE_DEBUG(DBG_LVL_1, "After be_mcc_compl_process\n");
388 return status;
389 }
390 } else {
391 dev_err(&ctrl->pdev->dev, "invalid mailbox completion\n");
392 return -EBUSY;
393 }
394 return 0;
395 }
396
397 /*
398 * Insert the mailbox address into the doorbell in two steps
399 * Polls on the mbox doorbell till a command completion (or a timeout) occurs
400 */
401 static int be_mbox_notify_wait(struct beiscsi_hba *phba)
402 {
403 int status;
404 u32 val = 0;
405 void __iomem *db = phba->ctrl.db + MPU_MAILBOX_DB_OFFSET;
406 struct be_dma_mem *mbox_mem = &phba->ctrl.mbox_mem;
407 struct be_mcc_mailbox *mbox = mbox_mem->va;
408 struct be_mcc_compl *compl = &mbox->compl;
409 struct be_ctrl_info *ctrl = &phba->ctrl;
410
411 val |= MPU_MAILBOX_DB_HI_MASK;
412 /* at bits 2 - 31 place mbox dma addr msb bits 34 - 63 */
413 val |= (upper_32_bits(mbox_mem->dma) >> 2) << 2;
414 iowrite32(val, db);
415
416 /* wait for ready to be set */
417 status = be_mbox_db_ready_wait(ctrl);
418 if (status != 0)
419 return status;
420
421 val = 0;
422 /* at bits 2 - 31 place mbox dma addr lsb bits 4 - 33 */
423 val |= (u32)(mbox_mem->dma >> 4) << 2;
424 iowrite32(val, db);
425
426 status = be_mbox_db_ready_wait(ctrl);
427 if (status != 0)
428 return status;
429
430 /* A cq entry has been made now */
431 if (be_mcc_compl_is_new(compl)) {
432 status = be_mcc_compl_process(ctrl, &mbox->compl);
433 be_mcc_compl_use(compl);
434 if (status)
435 return status;
436 } else {
437 dev_err(&phba->pcidev->dev, "invalid mailbox completion\n");
438 return -EBUSY;
439 }
440 return 0;
441 }
442
443 void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, int payload_len,
444 bool embedded, u8 sge_cnt)
445 {
446 if (embedded)
447 wrb->embedded |= MCC_WRB_EMBEDDED_MASK;
448 else
449 wrb->embedded |= (sge_cnt & MCC_WRB_SGE_CNT_MASK) <<
450 MCC_WRB_SGE_CNT_SHIFT;
451 wrb->payload_length = payload_len;
452 be_dws_cpu_to_le(wrb, 8);
453 }
454
455 void be_cmd_hdr_prepare(struct be_cmd_req_hdr *req_hdr,
456 u8 subsystem, u8 opcode, int cmd_len)
457 {
458 req_hdr->opcode = opcode;
459 req_hdr->subsystem = subsystem;
460 req_hdr->request_length = cpu_to_le32(cmd_len - sizeof(*req_hdr));
461 }
462
463 static void be_cmd_page_addrs_prepare(struct phys_addr *pages, u32 max_pages,
464 struct be_dma_mem *mem)
465 {
466 int i, buf_pages;
467 u64 dma = (u64) mem->dma;
468
469 buf_pages = min(PAGES_4K_SPANNED(mem->va, mem->size), max_pages);
470 for (i = 0; i < buf_pages; i++) {
471 pages[i].lo = cpu_to_le32(dma & 0xFFFFFFFF);
472 pages[i].hi = cpu_to_le32(upper_32_bits(dma));
473 dma += PAGE_SIZE_4K;
474 }
475 }
476
477 static u32 eq_delay_to_mult(u32 usec_delay)
478 {
479 #define MAX_INTR_RATE 651042
480 const u32 round = 10;
481 u32 multiplier;
482
483 if (usec_delay == 0)
484 multiplier = 0;
485 else {
486 u32 interrupt_rate = 1000000 / usec_delay;
487 if (interrupt_rate == 0)
488 multiplier = 1023;
489 else {
490 multiplier = (MAX_INTR_RATE - interrupt_rate) * round;
491 multiplier /= interrupt_rate;
492 multiplier = (multiplier + round / 2) / round;
493 multiplier = min(multiplier, (u32) 1023);
494 }
495 }
496 return multiplier;
497 }
498
499 struct be_mcc_wrb *wrb_from_mbox(struct be_dma_mem *mbox_mem)
500 {
501 return &((struct be_mcc_mailbox *)(mbox_mem->va))->wrb;
502 }
503
504 struct be_mcc_wrb *wrb_from_mccq(struct beiscsi_hba *phba)
505 {
506 struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
507 struct be_mcc_wrb *wrb;
508
509 BUG_ON(atomic_read(&mccq->used) >= mccq->len);
510 wrb = queue_head_node(mccq);
511 memset(wrb, 0, sizeof(*wrb));
512 wrb->tag0 = (mccq->head & 0x000000FF) << 16;
513 queue_head_inc(mccq);
514 atomic_inc(&mccq->used);
515 return wrb;
516 }
517
518
519 int beiscsi_cmd_eq_create(struct be_ctrl_info *ctrl,
520 struct be_queue_info *eq, int eq_delay)
521 {
522 struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
523 struct be_cmd_req_eq_create *req = embedded_payload(wrb);
524 struct be_cmd_resp_eq_create *resp = embedded_payload(wrb);
525 struct be_dma_mem *q_mem = &eq->dma_mem;
526 int status;
527
528 SE_DEBUG(DBG_LVL_8, "In beiscsi_cmd_eq_create\n");
529 spin_lock(&ctrl->mbox_lock);
530 memset(wrb, 0, sizeof(*wrb));
531
532 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
533
534 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
535 OPCODE_COMMON_EQ_CREATE, sizeof(*req));
536
537 req->num_pages = cpu_to_le16(PAGES_4K_SPANNED(q_mem->va, q_mem->size));
538
539 AMAP_SET_BITS(struct amap_eq_context, func, req->context,
540 PCI_FUNC(ctrl->pdev->devfn));
541 AMAP_SET_BITS(struct amap_eq_context, valid, req->context, 1);
542 AMAP_SET_BITS(struct amap_eq_context, size, req->context, 0);
543 AMAP_SET_BITS(struct amap_eq_context, count, req->context,
544 __ilog2_u32(eq->len / 256));
545 AMAP_SET_BITS(struct amap_eq_context, delaymult, req->context,
546 eq_delay_to_mult(eq_delay));
547 be_dws_cpu_to_le(req->context, sizeof(req->context));
548
549 be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
550
551 status = be_mbox_notify(ctrl);
552 if (!status) {
553 eq->id = le16_to_cpu(resp->eq_id);
554 eq->created = true;
555 }
556 spin_unlock(&ctrl->mbox_lock);
557 return status;
558 }
559
560 int be_cmd_fw_initialize(struct be_ctrl_info *ctrl)
561 {
562 struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
563 int status;
564 u8 *endian_check;
565
566 SE_DEBUG(DBG_LVL_8, "In be_cmd_fw_initialize\n");
567 spin_lock(&ctrl->mbox_lock);
568 memset(wrb, 0, sizeof(*wrb));
569
570 endian_check = (u8 *) wrb;
571 *endian_check++ = 0xFF;
572 *endian_check++ = 0x12;
573 *endian_check++ = 0x34;
574 *endian_check++ = 0xFF;
575 *endian_check++ = 0xFF;
576 *endian_check++ = 0x56;
577 *endian_check++ = 0x78;
578 *endian_check++ = 0xFF;
579 be_dws_cpu_to_le(wrb, sizeof(*wrb));
580
581 status = be_mbox_notify(ctrl);
582 if (status)
583 SE_DEBUG(DBG_LVL_1, "be_cmd_fw_initialize Failed\n");
584
585 spin_unlock(&ctrl->mbox_lock);
586 return status;
587 }
588
589 int beiscsi_cmd_cq_create(struct be_ctrl_info *ctrl,
590 struct be_queue_info *cq, struct be_queue_info *eq,
591 bool sol_evts, bool no_delay, int coalesce_wm)
592 {
593 struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
594 struct be_cmd_req_cq_create *req = embedded_payload(wrb);
595 struct be_cmd_resp_cq_create *resp = embedded_payload(wrb);
596 struct be_dma_mem *q_mem = &cq->dma_mem;
597 void *ctxt = &req->context;
598 int status;
599
600 SE_DEBUG(DBG_LVL_8, "In beiscsi_cmd_cq_create\n");
601 spin_lock(&ctrl->mbox_lock);
602 memset(wrb, 0, sizeof(*wrb));
603
604 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
605
606 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
607 OPCODE_COMMON_CQ_CREATE, sizeof(*req));
608 if (!q_mem->va)
609 SE_DEBUG(DBG_LVL_1, "uninitialized q_mem->va\n");
610
611 req->num_pages = cpu_to_le16(PAGES_4K_SPANNED(q_mem->va, q_mem->size));
612
613 AMAP_SET_BITS(struct amap_cq_context, coalescwm, ctxt, coalesce_wm);
614 AMAP_SET_BITS(struct amap_cq_context, nodelay, ctxt, no_delay);
615 AMAP_SET_BITS(struct amap_cq_context, count, ctxt,
616 __ilog2_u32(cq->len / 256));
617 AMAP_SET_BITS(struct amap_cq_context, valid, ctxt, 1);
618 AMAP_SET_BITS(struct amap_cq_context, solevent, ctxt, sol_evts);
619 AMAP_SET_BITS(struct amap_cq_context, eventable, ctxt, 1);
620 AMAP_SET_BITS(struct amap_cq_context, eqid, ctxt, eq->id);
621 AMAP_SET_BITS(struct amap_cq_context, armed, ctxt, 1);
622 AMAP_SET_BITS(struct amap_cq_context, func, ctxt,
623 PCI_FUNC(ctrl->pdev->devfn));
624 be_dws_cpu_to_le(ctxt, sizeof(req->context));
625
626 be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
627
628 status = be_mbox_notify(ctrl);
629 if (!status) {
630 cq->id = le16_to_cpu(resp->cq_id);
631 cq->created = true;
632 } else
633 SE_DEBUG(DBG_LVL_1, "In be_cmd_cq_create, status=ox%08x\n",
634 status);
635 spin_unlock(&ctrl->mbox_lock);
636
637 return status;
638 }
639
640 static u32 be_encoded_q_len(int q_len)
641 {
642 u32 len_encoded = fls(q_len); /* log2(len) + 1 */
643 if (len_encoded == 16)
644 len_encoded = 0;
645 return len_encoded;
646 }
647
648 int beiscsi_cmd_mccq_create(struct beiscsi_hba *phba,
649 struct be_queue_info *mccq,
650 struct be_queue_info *cq)
651 {
652 struct be_mcc_wrb *wrb;
653 struct be_cmd_req_mcc_create *req;
654 struct be_dma_mem *q_mem = &mccq->dma_mem;
655 struct be_ctrl_info *ctrl;
656 void *ctxt;
657 int status;
658
659 spin_lock(&phba->ctrl.mbox_lock);
660 ctrl = &phba->ctrl;
661 wrb = wrb_from_mbox(&ctrl->mbox_mem);
662 req = embedded_payload(wrb);
663 ctxt = &req->context;
664
665 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
666
667 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
668 OPCODE_COMMON_MCC_CREATE, sizeof(*req));
669
670 req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
671
672 AMAP_SET_BITS(struct amap_mcc_context, fid, ctxt,
673 PCI_FUNC(phba->pcidev->devfn));
674 AMAP_SET_BITS(struct amap_mcc_context, valid, ctxt, 1);
675 AMAP_SET_BITS(struct amap_mcc_context, ring_size, ctxt,
676 be_encoded_q_len(mccq->len));
677 AMAP_SET_BITS(struct amap_mcc_context, cq_id, ctxt, cq->id);
678
679 be_dws_cpu_to_le(ctxt, sizeof(req->context));
680
681 be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
682
683 status = be_mbox_notify_wait(phba);
684 if (!status) {
685 struct be_cmd_resp_mcc_create *resp = embedded_payload(wrb);
686 mccq->id = le16_to_cpu(resp->id);
687 mccq->created = true;
688 }
689 spin_unlock(&phba->ctrl.mbox_lock);
690
691 return status;
692 }
693
694 int beiscsi_cmd_q_destroy(struct be_ctrl_info *ctrl, struct be_queue_info *q,
695 int queue_type)
696 {
697 struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
698 struct be_cmd_req_q_destroy *req = embedded_payload(wrb);
699 u8 subsys = 0, opcode = 0;
700 int status;
701
702 SE_DEBUG(DBG_LVL_8, "In beiscsi_cmd_q_destroy\n");
703 spin_lock(&ctrl->mbox_lock);
704 memset(wrb, 0, sizeof(*wrb));
705 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
706
707 switch (queue_type) {
708 case QTYPE_EQ:
709 subsys = CMD_SUBSYSTEM_COMMON;
710 opcode = OPCODE_COMMON_EQ_DESTROY;
711 break;
712 case QTYPE_CQ:
713 subsys = CMD_SUBSYSTEM_COMMON;
714 opcode = OPCODE_COMMON_CQ_DESTROY;
715 break;
716 case QTYPE_MCCQ:
717 subsys = CMD_SUBSYSTEM_COMMON;
718 opcode = OPCODE_COMMON_MCC_DESTROY;
719 break;
720 case QTYPE_WRBQ:
721 subsys = CMD_SUBSYSTEM_ISCSI;
722 opcode = OPCODE_COMMON_ISCSI_WRBQ_DESTROY;
723 break;
724 case QTYPE_DPDUQ:
725 subsys = CMD_SUBSYSTEM_ISCSI;
726 opcode = OPCODE_COMMON_ISCSI_DEFQ_DESTROY;
727 break;
728 case QTYPE_SGL:
729 subsys = CMD_SUBSYSTEM_ISCSI;
730 opcode = OPCODE_COMMON_ISCSI_CFG_REMOVE_SGL_PAGES;
731 break;
732 default:
733 spin_unlock(&ctrl->mbox_lock);
734 BUG();
735 return -ENXIO;
736 }
737 be_cmd_hdr_prepare(&req->hdr, subsys, opcode, sizeof(*req));
738 if (queue_type != QTYPE_SGL)
739 req->id = cpu_to_le16(q->id);
740
741 status = be_mbox_notify(ctrl);
742
743 spin_unlock(&ctrl->mbox_lock);
744 return status;
745 }
746
747 int be_cmd_create_default_pdu_queue(struct be_ctrl_info *ctrl,
748 struct be_queue_info *cq,
749 struct be_queue_info *dq, int length,
750 int entry_size)
751 {
752 struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
753 struct be_defq_create_req *req = embedded_payload(wrb);
754 struct be_dma_mem *q_mem = &dq->dma_mem;
755 void *ctxt = &req->context;
756 int status;
757
758 SE_DEBUG(DBG_LVL_8, "In be_cmd_create_default_pdu_queue\n");
759 spin_lock(&ctrl->mbox_lock);
760 memset(wrb, 0, sizeof(*wrb));
761
762 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
763
764 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
765 OPCODE_COMMON_ISCSI_DEFQ_CREATE, sizeof(*req));
766
767 req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
768 AMAP_SET_BITS(struct amap_be_default_pdu_context, rx_pdid, ctxt, 0);
769 AMAP_SET_BITS(struct amap_be_default_pdu_context, rx_pdid_valid, ctxt,
770 1);
771 AMAP_SET_BITS(struct amap_be_default_pdu_context, pci_func_id, ctxt,
772 PCI_FUNC(ctrl->pdev->devfn));
773 AMAP_SET_BITS(struct amap_be_default_pdu_context, ring_size, ctxt,
774 be_encoded_q_len(length / sizeof(struct phys_addr)));
775 AMAP_SET_BITS(struct amap_be_default_pdu_context, default_buffer_size,
776 ctxt, entry_size);
777 AMAP_SET_BITS(struct amap_be_default_pdu_context, cq_id_recv, ctxt,
778 cq->id);
779
780 be_dws_cpu_to_le(ctxt, sizeof(req->context));
781
782 be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
783
784 status = be_mbox_notify(ctrl);
785 if (!status) {
786 struct be_defq_create_resp *resp = embedded_payload(wrb);
787
788 dq->id = le16_to_cpu(resp->id);
789 dq->created = true;
790 }
791 spin_unlock(&ctrl->mbox_lock);
792
793 return status;
794 }
795
796 int be_cmd_wrbq_create(struct be_ctrl_info *ctrl, struct be_dma_mem *q_mem,
797 struct be_queue_info *wrbq)
798 {
799 struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
800 struct be_wrbq_create_req *req = embedded_payload(wrb);
801 struct be_wrbq_create_resp *resp = embedded_payload(wrb);
802 int status;
803
804 spin_lock(&ctrl->mbox_lock);
805 memset(wrb, 0, sizeof(*wrb));
806
807 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
808
809 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
810 OPCODE_COMMON_ISCSI_WRBQ_CREATE, sizeof(*req));
811 req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
812 be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
813
814 status = be_mbox_notify(ctrl);
815 if (!status) {
816 wrbq->id = le16_to_cpu(resp->cid);
817 wrbq->created = true;
818 }
819 spin_unlock(&ctrl->mbox_lock);
820 return status;
821 }
822
823 int be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info *ctrl,
824 struct be_dma_mem *q_mem,
825 u32 page_offset, u32 num_pages)
826 {
827 struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
828 struct be_post_sgl_pages_req *req = embedded_payload(wrb);
829 int status;
830 unsigned int curr_pages;
831 u32 internal_page_offset = 0;
832 u32 temp_num_pages = num_pages;
833
834 if (num_pages == 0xff)
835 num_pages = 1;
836
837 spin_lock(&ctrl->mbox_lock);
838 do {
839 memset(wrb, 0, sizeof(*wrb));
840 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
841 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
842 OPCODE_COMMON_ISCSI_CFG_POST_SGL_PAGES,
843 sizeof(*req));
844 curr_pages = BE_NUMBER_OF_FIELD(struct be_post_sgl_pages_req,
845 pages);
846 req->num_pages = min(num_pages, curr_pages);
847 req->page_offset = page_offset;
848 be_cmd_page_addrs_prepare(req->pages, req->num_pages, q_mem);
849 q_mem->dma = q_mem->dma + (req->num_pages * PAGE_SIZE);
850 internal_page_offset += req->num_pages;
851 page_offset += req->num_pages;
852 num_pages -= req->num_pages;
853
854 if (temp_num_pages == 0xff)
855 req->num_pages = temp_num_pages;
856
857 status = be_mbox_notify(ctrl);
858 if (status) {
859 SE_DEBUG(DBG_LVL_1,
860 "FW CMD to map iscsi frags failed.\n");
861 goto error;
862 }
863 } while (num_pages > 0);
864 error:
865 spin_unlock(&ctrl->mbox_lock);
866 if (status != 0)
867 beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);
868 return status;
869 }
x86 "subsystem" repository