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7#include <linux/kernel.h>
8#include <linux/types.h>
9#include <linux/pci.h>
10#include <linux/device.h>
11#include <linux/errno.h>
12#include <linux/slab.h>
13#include <linux/semaphore.h>
14#include <linux/dma-mapping.h>
15#include <linux/io.h>
16#include <linux/err.h>
17
18#include "hinic_hw_dev.h"
19#include "hinic_hw_if.h"
20#include "hinic_hw_eqs.h"
21#include "hinic_hw_wqe.h"
22#include "hinic_hw_wq.h"
23#include "hinic_hw_cmdq.h"
24#include "hinic_hw_qp_ctxt.h"
25#include "hinic_hw_qp.h"
26#include "hinic_hw_io.h"
27
28#define CI_Q_ADDR_SIZE sizeof(u32)
29
30#define CI_ADDR(base_addr, q_id) ((base_addr) + \
31 (q_id) * CI_Q_ADDR_SIZE)
32
33#define CI_TABLE_SIZE(num_qps) ((num_qps) * CI_Q_ADDR_SIZE)
34
35#define DB_IDX(db, db_base) \
36 (((unsigned long)(db) - (unsigned long)(db_base)) / HINIC_DB_PAGE_SIZE)
37
38#define HINIC_PAGE_SIZE_HW(pg_size) ((u8)ilog2((u32)((pg_size) >> 12)))
39
40enum io_cmd {
41 IO_CMD_MODIFY_QUEUE_CTXT = 0,
42 IO_CMD_CLEAN_QUEUE_CTXT,
43};
44
45static void init_db_area_idx(struct hinic_free_db_area *free_db_area)
46{
47 int i;
48
49 for (i = 0; i < HINIC_DB_MAX_AREAS; i++)
50 free_db_area->db_idx[i] = i;
51
52 free_db_area->alloc_pos = 0;
53 free_db_area->return_pos = HINIC_DB_MAX_AREAS;
54
55 free_db_area->num_free = HINIC_DB_MAX_AREAS;
56
57 sema_init(&free_db_area->idx_lock, 1);
58}
59
60static void __iomem *get_db_area(struct hinic_func_to_io *func_to_io)
61{
62 struct hinic_free_db_area *free_db_area = &func_to_io->free_db_area;
63 int pos, idx;
64
65 down(&free_db_area->idx_lock);
66
67 free_db_area->num_free--;
68
69 if (free_db_area->num_free < 0) {
70 free_db_area->num_free++;
71 up(&free_db_area->idx_lock);
72 return ERR_PTR(-ENOMEM);
73 }
74
75 pos = free_db_area->alloc_pos++;
76 pos &= HINIC_DB_MAX_AREAS - 1;
77
78 idx = free_db_area->db_idx[pos];
79
80 free_db_area->db_idx[pos] = -1;
81
82 up(&free_db_area->idx_lock);
83
84 return func_to_io->db_base + idx * HINIC_DB_PAGE_SIZE;
85}
86
87static void return_db_area(struct hinic_func_to_io *func_to_io,
88 void __iomem *db_base)
89{
90 struct hinic_free_db_area *free_db_area = &func_to_io->free_db_area;
91 int pos, idx = DB_IDX(db_base, func_to_io->db_base);
92
93 down(&free_db_area->idx_lock);
94
95 pos = free_db_area->return_pos++;
96 pos &= HINIC_DB_MAX_AREAS - 1;
97
98 free_db_area->db_idx[pos] = idx;
99
100 free_db_area->num_free++;
101
102 up(&free_db_area->idx_lock);
103}
104
105static int write_sq_ctxts(struct hinic_func_to_io *func_to_io, u16 base_qpn,
106 u16 num_sqs)
107{
108 struct hinic_hwif *hwif = func_to_io->hwif;
109 struct hinic_sq_ctxt_block *sq_ctxt_block;
110 struct pci_dev *pdev = hwif->pdev;
111 struct hinic_cmdq_buf cmdq_buf;
112 struct hinic_sq_ctxt *sq_ctxt;
113 struct hinic_qp *qp;
114 u64 out_param;
115 int err, i;
116
117 err = hinic_alloc_cmdq_buf(&func_to_io->cmdqs, &cmdq_buf);
118 if (err) {
119 dev_err(&pdev->dev, "Failed to allocate cmdq buf\n");
120 return err;
121 }
122
123 sq_ctxt_block = cmdq_buf.buf;
124 sq_ctxt = sq_ctxt_block->sq_ctxt;
125
126 hinic_qp_prepare_header(&sq_ctxt_block->hdr, HINIC_QP_CTXT_TYPE_SQ,
127 num_sqs, func_to_io->max_qps);
128 for (i = 0; i < num_sqs; i++) {
129 qp = &func_to_io->qps[i];
130
131 hinic_sq_prepare_ctxt(&sq_ctxt[i], &qp->sq,
132 base_qpn + qp->q_id);
133 }
134
135 cmdq_buf.size = HINIC_SQ_CTXT_SIZE(num_sqs);
136
137 err = hinic_cmdq_direct_resp(&func_to_io->cmdqs, HINIC_MOD_L2NIC,
138 IO_CMD_MODIFY_QUEUE_CTXT, &cmdq_buf,
139 &out_param);
140 if ((err) || (out_param != 0)) {
141 dev_err(&pdev->dev, "Failed to set SQ ctxts\n");
142 err = -EFAULT;
143 }
144
145 hinic_free_cmdq_buf(&func_to_io->cmdqs, &cmdq_buf);
146 return err;
147}
148
149static int write_rq_ctxts(struct hinic_func_to_io *func_to_io, u16 base_qpn,
150 u16 num_rqs)
151{
152 struct hinic_hwif *hwif = func_to_io->hwif;
153 struct hinic_rq_ctxt_block *rq_ctxt_block;
154 struct pci_dev *pdev = hwif->pdev;
155 struct hinic_cmdq_buf cmdq_buf;
156 struct hinic_rq_ctxt *rq_ctxt;
157 struct hinic_qp *qp;
158 u64 out_param;
159 int err, i;
160
161 err = hinic_alloc_cmdq_buf(&func_to_io->cmdqs, &cmdq_buf);
162 if (err) {
163 dev_err(&pdev->dev, "Failed to allocate cmdq buf\n");
164 return err;
165 }
166
167 rq_ctxt_block = cmdq_buf.buf;
168 rq_ctxt = rq_ctxt_block->rq_ctxt;
169
170 hinic_qp_prepare_header(&rq_ctxt_block->hdr, HINIC_QP_CTXT_TYPE_RQ,
171 num_rqs, func_to_io->max_qps);
172 for (i = 0; i < num_rqs; i++) {
173 qp = &func_to_io->qps[i];
174
175 hinic_rq_prepare_ctxt(&rq_ctxt[i], &qp->rq,
176 base_qpn + qp->q_id);
177 }
178
179 cmdq_buf.size = HINIC_RQ_CTXT_SIZE(num_rqs);
180
181 err = hinic_cmdq_direct_resp(&func_to_io->cmdqs, HINIC_MOD_L2NIC,
182 IO_CMD_MODIFY_QUEUE_CTXT, &cmdq_buf,
183 &out_param);
184 if ((err) || (out_param != 0)) {
185 dev_err(&pdev->dev, "Failed to set RQ ctxts\n");
186 err = -EFAULT;
187 }
188
189 hinic_free_cmdq_buf(&func_to_io->cmdqs, &cmdq_buf);
190 return err;
191}
192
193
194
195
196
197
198
199
200
201static int write_qp_ctxts(struct hinic_func_to_io *func_to_io, u16 base_qpn,
202 u16 num_qps)
203{
204 return (write_sq_ctxts(func_to_io, base_qpn, num_qps) ||
205 write_rq_ctxts(func_to_io, base_qpn, num_qps));
206}
207
208static int hinic_clean_queue_offload_ctxt(struct hinic_func_to_io *func_to_io,
209 enum hinic_qp_ctxt_type ctxt_type)
210{
211 struct hinic_hwif *hwif = func_to_io->hwif;
212 struct hinic_clean_queue_ctxt *ctxt_block;
213 struct pci_dev *pdev = hwif->pdev;
214 struct hinic_cmdq_buf cmdq_buf;
215 u64 out_param = 0;
216 int err;
217
218 err = hinic_alloc_cmdq_buf(&func_to_io->cmdqs, &cmdq_buf);
219 if (err) {
220 dev_err(&pdev->dev, "Failed to allocate cmdq buf\n");
221 return err;
222 }
223
224 ctxt_block = cmdq_buf.buf;
225 ctxt_block->cmdq_hdr.num_queues = func_to_io->max_qps;
226 ctxt_block->cmdq_hdr.queue_type = ctxt_type;
227 ctxt_block->cmdq_hdr.addr_offset = 0;
228
229
230 ctxt_block->ctxt_size = 0x3;
231
232 hinic_cpu_to_be32(ctxt_block, sizeof(*ctxt_block));
233
234 cmdq_buf.size = sizeof(*ctxt_block);
235
236 err = hinic_cmdq_direct_resp(&func_to_io->cmdqs, HINIC_MOD_L2NIC,
237 IO_CMD_CLEAN_QUEUE_CTXT,
238 &cmdq_buf, &out_param);
239
240 if (err || out_param) {
241 dev_err(&pdev->dev, "Failed to clean offload ctxts, err: %d, out_param: 0x%llx\n",
242 err, out_param);
243
244 err = -EFAULT;
245 }
246
247 hinic_free_cmdq_buf(&func_to_io->cmdqs, &cmdq_buf);
248
249 return err;
250}
251
252static int hinic_clean_qp_offload_ctxt(struct hinic_func_to_io *func_to_io)
253{
254
255 return (hinic_clean_queue_offload_ctxt(func_to_io,
256 HINIC_QP_CTXT_TYPE_SQ) ||
257 hinic_clean_queue_offload_ctxt(func_to_io,
258 HINIC_QP_CTXT_TYPE_RQ));
259}
260
261
262
263
264
265
266
267
268
269
270
271static int init_qp(struct hinic_func_to_io *func_to_io,
272 struct hinic_qp *qp, int q_id,
273 struct msix_entry *sq_msix_entry,
274 struct msix_entry *rq_msix_entry)
275{
276 struct hinic_hwif *hwif = func_to_io->hwif;
277 struct pci_dev *pdev = hwif->pdev;
278 void __iomem *db_base;
279 int err;
280
281 qp->q_id = q_id;
282
283 err = hinic_wq_allocate(&func_to_io->wqs, &func_to_io->sq_wq[q_id],
284 HINIC_SQ_WQEBB_SIZE, HINIC_SQ_PAGE_SIZE,
285 func_to_io->sq_depth, HINIC_SQ_WQE_MAX_SIZE);
286 if (err) {
287 dev_err(&pdev->dev, "Failed to allocate WQ for SQ\n");
288 return err;
289 }
290
291 err = hinic_wq_allocate(&func_to_io->wqs, &func_to_io->rq_wq[q_id],
292 HINIC_RQ_WQEBB_SIZE, HINIC_RQ_PAGE_SIZE,
293 func_to_io->rq_depth, HINIC_RQ_WQE_SIZE);
294 if (err) {
295 dev_err(&pdev->dev, "Failed to allocate WQ for RQ\n");
296 goto err_rq_alloc;
297 }
298
299 db_base = get_db_area(func_to_io);
300 if (IS_ERR(db_base)) {
301 dev_err(&pdev->dev, "Failed to get DB area for SQ\n");
302 err = PTR_ERR(db_base);
303 goto err_get_db;
304 }
305
306 func_to_io->sq_db[q_id] = db_base;
307
308 qp->sq.qid = q_id;
309 err = hinic_init_sq(&qp->sq, hwif, &func_to_io->sq_wq[q_id],
310 sq_msix_entry,
311 CI_ADDR(func_to_io->ci_addr_base, q_id),
312 CI_ADDR(func_to_io->ci_dma_base, q_id), db_base);
313 if (err) {
314 dev_err(&pdev->dev, "Failed to init SQ\n");
315 goto err_sq_init;
316 }
317
318 qp->rq.qid = q_id;
319 err = hinic_init_rq(&qp->rq, hwif, &func_to_io->rq_wq[q_id],
320 rq_msix_entry);
321 if (err) {
322 dev_err(&pdev->dev, "Failed to init RQ\n");
323 goto err_rq_init;
324 }
325
326 return 0;
327
328err_rq_init:
329 hinic_clean_sq(&qp->sq);
330
331err_sq_init:
332 return_db_area(func_to_io, db_base);
333
334err_get_db:
335 hinic_wq_free(&func_to_io->wqs, &func_to_io->rq_wq[q_id]);
336
337err_rq_alloc:
338 hinic_wq_free(&func_to_io->wqs, &func_to_io->sq_wq[q_id]);
339 return err;
340}
341
342
343
344
345
346
347static void destroy_qp(struct hinic_func_to_io *func_to_io,
348 struct hinic_qp *qp)
349{
350 int q_id = qp->q_id;
351
352 hinic_clean_rq(&qp->rq);
353 hinic_clean_sq(&qp->sq);
354
355 return_db_area(func_to_io, func_to_io->sq_db[q_id]);
356
357 hinic_wq_free(&func_to_io->wqs, &func_to_io->rq_wq[q_id]);
358 hinic_wq_free(&func_to_io->wqs, &func_to_io->sq_wq[q_id]);
359}
360
361
362
363
364
365
366
367
368
369
370
371int hinic_io_create_qps(struct hinic_func_to_io *func_to_io,
372 u16 base_qpn, int num_qps,
373 struct msix_entry *sq_msix_entries,
374 struct msix_entry *rq_msix_entries)
375{
376 struct hinic_hwif *hwif = func_to_io->hwif;
377 struct pci_dev *pdev = hwif->pdev;
378 size_t qps_size, wq_size, db_size;
379 void *ci_addr_base;
380 int i, j, err;
381
382 qps_size = num_qps * sizeof(*func_to_io->qps);
383 func_to_io->qps = devm_kzalloc(&pdev->dev, qps_size, GFP_KERNEL);
384 if (!func_to_io->qps)
385 return -ENOMEM;
386
387 wq_size = num_qps * sizeof(*func_to_io->sq_wq);
388 func_to_io->sq_wq = devm_kzalloc(&pdev->dev, wq_size, GFP_KERNEL);
389 if (!func_to_io->sq_wq) {
390 err = -ENOMEM;
391 goto err_sq_wq;
392 }
393
394 wq_size = num_qps * sizeof(*func_to_io->rq_wq);
395 func_to_io->rq_wq = devm_kzalloc(&pdev->dev, wq_size, GFP_KERNEL);
396 if (!func_to_io->rq_wq) {
397 err = -ENOMEM;
398 goto err_rq_wq;
399 }
400
401 db_size = num_qps * sizeof(*func_to_io->sq_db);
402 func_to_io->sq_db = devm_kzalloc(&pdev->dev, db_size, GFP_KERNEL);
403 if (!func_to_io->sq_db) {
404 err = -ENOMEM;
405 goto err_sq_db;
406 }
407
408 ci_addr_base = dma_alloc_coherent(&pdev->dev, CI_TABLE_SIZE(num_qps),
409 &func_to_io->ci_dma_base,
410 GFP_KERNEL);
411 if (!ci_addr_base) {
412 dev_err(&pdev->dev, "Failed to allocate CI area\n");
413 err = -ENOMEM;
414 goto err_ci_base;
415 }
416
417 func_to_io->ci_addr_base = ci_addr_base;
418
419 for (i = 0; i < num_qps; i++) {
420 err = init_qp(func_to_io, &func_to_io->qps[i], i,
421 &sq_msix_entries[i], &rq_msix_entries[i]);
422 if (err) {
423 dev_err(&pdev->dev, "Failed to create QP %d\n", i);
424 goto err_init_qp;
425 }
426 }
427
428 err = write_qp_ctxts(func_to_io, base_qpn, num_qps);
429 if (err) {
430 dev_err(&pdev->dev, "Failed to init QP ctxts\n");
431 goto err_write_qp_ctxts;
432 }
433
434 err = hinic_clean_qp_offload_ctxt(func_to_io);
435 if (err) {
436 dev_err(&pdev->dev, "Failed to clean QP contexts space\n");
437 goto err_write_qp_ctxts;
438 }
439
440 return 0;
441
442err_write_qp_ctxts:
443err_init_qp:
444 for (j = 0; j < i; j++)
445 destroy_qp(func_to_io, &func_to_io->qps[j]);
446
447 dma_free_coherent(&pdev->dev, CI_TABLE_SIZE(num_qps),
448 func_to_io->ci_addr_base, func_to_io->ci_dma_base);
449
450err_ci_base:
451 devm_kfree(&pdev->dev, func_to_io->sq_db);
452
453err_sq_db:
454 devm_kfree(&pdev->dev, func_to_io->rq_wq);
455
456err_rq_wq:
457 devm_kfree(&pdev->dev, func_to_io->sq_wq);
458
459err_sq_wq:
460 devm_kfree(&pdev->dev, func_to_io->qps);
461 return err;
462}
463
464
465
466
467
468
469void hinic_io_destroy_qps(struct hinic_func_to_io *func_to_io, int num_qps)
470{
471 struct hinic_hwif *hwif = func_to_io->hwif;
472 struct pci_dev *pdev = hwif->pdev;
473 size_t ci_table_size;
474 int i;
475
476 ci_table_size = CI_TABLE_SIZE(num_qps);
477
478 for (i = 0; i < num_qps; i++)
479 destroy_qp(func_to_io, &func_to_io->qps[i]);
480
481 dma_free_coherent(&pdev->dev, ci_table_size, func_to_io->ci_addr_base,
482 func_to_io->ci_dma_base);
483
484 devm_kfree(&pdev->dev, func_to_io->sq_db);
485
486 devm_kfree(&pdev->dev, func_to_io->rq_wq);
487 devm_kfree(&pdev->dev, func_to_io->sq_wq);
488
489 devm_kfree(&pdev->dev, func_to_io->qps);
490}
491
492int hinic_set_wq_page_size(struct hinic_hwdev *hwdev, u16 func_idx,
493 u32 page_size)
494{
495 struct hinic_wq_page_size page_size_info = {0};
496 u16 out_size = sizeof(page_size_info);
497 struct hinic_pfhwdev *pfhwdev;
498 int err;
499
500 pfhwdev = container_of(hwdev, struct hinic_pfhwdev, hwdev);
501
502 page_size_info.func_idx = func_idx;
503 page_size_info.ppf_idx = HINIC_HWIF_PPF_IDX(hwdev->hwif);
504 page_size_info.page_size = HINIC_PAGE_SIZE_HW(page_size);
505
506 err = hinic_msg_to_mgmt(&pfhwdev->pf_to_mgmt, HINIC_MOD_COMM,
507 HINIC_COMM_CMD_PAGESIZE_SET, &page_size_info,
508 sizeof(page_size_info), &page_size_info,
509 &out_size, HINIC_MGMT_MSG_SYNC);
510 if (err || !out_size || page_size_info.status) {
511 dev_err(&hwdev->hwif->pdev->dev, "Failed to set wq page size, err: %d, status: 0x%x, out_size: 0x%0x\n",
512 err, page_size_info.status, out_size);
513 return -EFAULT;
514 }
515
516 return 0;
517}
518
519
520
521
522
523
524
525
526
527
528
529int hinic_io_init(struct hinic_func_to_io *func_to_io,
530 struct hinic_hwif *hwif, u16 max_qps, int num_ceqs,
531 struct msix_entry *ceq_msix_entries)
532{
533 struct pci_dev *pdev = hwif->pdev;
534 enum hinic_cmdq_type cmdq, type;
535 void __iomem *db_area;
536 int err;
537
538 func_to_io->hwif = hwif;
539 func_to_io->qps = NULL;
540 func_to_io->max_qps = max_qps;
541 func_to_io->ceqs.hwdev = func_to_io->hwdev;
542
543 err = hinic_ceqs_init(&func_to_io->ceqs, hwif, num_ceqs,
544 HINIC_DEFAULT_CEQ_LEN, HINIC_EQ_PAGE_SIZE,
545 ceq_msix_entries);
546 if (err) {
547 dev_err(&pdev->dev, "Failed to init CEQs\n");
548 return err;
549 }
550
551 err = hinic_wqs_alloc(&func_to_io->wqs, 2 * max_qps, hwif);
552 if (err) {
553 dev_err(&pdev->dev, "Failed to allocate WQS for IO\n");
554 goto err_wqs_alloc;
555 }
556
557 func_to_io->db_base = pci_ioremap_bar(pdev, HINIC_PCI_DB_BAR);
558 if (!func_to_io->db_base) {
559 dev_err(&pdev->dev, "Failed to remap IO DB area\n");
560 err = -ENOMEM;
561 goto err_db_ioremap;
562 }
563
564 init_db_area_idx(&func_to_io->free_db_area);
565
566 for (cmdq = HINIC_CMDQ_SYNC; cmdq < HINIC_MAX_CMDQ_TYPES; cmdq++) {
567 db_area = get_db_area(func_to_io);
568 if (IS_ERR(db_area)) {
569 dev_err(&pdev->dev, "Failed to get cmdq db area\n");
570 err = PTR_ERR(db_area);
571 goto err_db_area;
572 }
573
574 func_to_io->cmdq_db_area[cmdq] = db_area;
575 }
576
577 err = hinic_set_wq_page_size(func_to_io->hwdev,
578 HINIC_HWIF_FUNC_IDX(hwif),
579 HINIC_DEFAULT_WQ_PAGE_SIZE);
580 if (err) {
581 dev_err(&func_to_io->hwif->pdev->dev, "Failed to set wq page size\n");
582 goto init_wq_pg_size_err;
583 }
584
585 err = hinic_init_cmdqs(&func_to_io->cmdqs, hwif,
586 func_to_io->cmdq_db_area);
587 if (err) {
588 dev_err(&pdev->dev, "Failed to initialize cmdqs\n");
589 goto err_init_cmdqs;
590 }
591
592 return 0;
593
594err_init_cmdqs:
595 if (!HINIC_IS_VF(func_to_io->hwif))
596 hinic_set_wq_page_size(func_to_io->hwdev,
597 HINIC_HWIF_FUNC_IDX(hwif),
598 HINIC_HW_WQ_PAGE_SIZE);
599init_wq_pg_size_err:
600err_db_area:
601 for (type = HINIC_CMDQ_SYNC; type < cmdq; type++)
602 return_db_area(func_to_io, func_to_io->cmdq_db_area[type]);
603
604 iounmap(func_to_io->db_base);
605
606err_db_ioremap:
607 hinic_wqs_free(&func_to_io->wqs);
608
609err_wqs_alloc:
610 hinic_ceqs_free(&func_to_io->ceqs);
611 return err;
612}
613
614
615
616
617
618void hinic_io_free(struct hinic_func_to_io *func_to_io)
619{
620 enum hinic_cmdq_type cmdq;
621
622 hinic_free_cmdqs(&func_to_io->cmdqs);
623
624 if (!HINIC_IS_VF(func_to_io->hwif))
625 hinic_set_wq_page_size(func_to_io->hwdev,
626 HINIC_HWIF_FUNC_IDX(func_to_io->hwif),
627 HINIC_HW_WQ_PAGE_SIZE);
628
629 for (cmdq = HINIC_CMDQ_SYNC; cmdq < HINIC_MAX_CMDQ_TYPES; cmdq++)
630 return_db_area(func_to_io, func_to_io->cmdq_db_area[cmdq]);
631
632 iounmap(func_to_io->db_base);
633 hinic_wqs_free(&func_to_io->wqs);
634 hinic_ceqs_free(&func_to_io->ceqs);
635}
636
