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32#include <linux/dma-mapping.h>
33#include <linux/crc32.h>
34#include <net/ip.h>
35#include <net/ipv6.h>
36#include <net/udp.h>
37#include <linux/iommu.h>
38
39#include <rdma/ib_verbs.h>
40#include <rdma/ib_user_verbs.h>
41#include <rdma/iw_cm.h>
42#include <rdma/ib_umem.h>
43#include <rdma/ib_addr.h>
44#include <rdma/ib_cache.h>
45
46#include "qedr_hsi.h"
47#include <linux/qed/qed_if.h>
48#include "qedr.h"
49#include "verbs.h"
50#include <rdma/qedr-abi.h>
51#include "qedr_cm.h"
52
53#define DB_ADDR_SHIFT(addr) ((addr) << DB_PWM_ADDR_OFFSET_SHIFT)
54
55int qedr_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
56{
57 if (index > QEDR_ROCE_PKEY_TABLE_LEN)
58 return -EINVAL;
59
60 *pkey = QEDR_ROCE_PKEY_DEFAULT;
61 return 0;
62}
63
64int qedr_query_gid(struct ib_device *ibdev, u8 port, int index,
65 union ib_gid *sgid)
66{
67 struct qedr_dev *dev = get_qedr_dev(ibdev);
68 int rc = 0;
69
70 if (!rdma_cap_roce_gid_table(ibdev, port))
71 return -ENODEV;
72
73 rc = ib_get_cached_gid(ibdev, port, index, sgid, NULL);
74 if (rc == -EAGAIN) {
75 memcpy(sgid, &zgid, sizeof(*sgid));
76 return 0;
77 }
78
79 DP_DEBUG(dev, QEDR_MSG_INIT, "query gid: index=%d %llx:%llx\n", index,
80 sgid->global.interface_id, sgid->global.subnet_prefix);
81
82 return rc;
83}
84
85int qedr_add_gid(struct ib_device *device, u8 port_num,
86 unsigned int index, const union ib_gid *gid,
87 const struct ib_gid_attr *attr, void **context)
88{
89 if (!rdma_cap_roce_gid_table(device, port_num))
90 return -EINVAL;
91
92 if (port_num > QEDR_MAX_PORT)
93 return -EINVAL;
94
95 if (!context)
96 return -EINVAL;
97
98 return 0;
99}
100
101int qedr_del_gid(struct ib_device *device, u8 port_num,
102 unsigned int index, void **context)
103{
104 if (!rdma_cap_roce_gid_table(device, port_num))
105 return -EINVAL;
106
107 if (port_num > QEDR_MAX_PORT)
108 return -EINVAL;
109
110 if (!context)
111 return -EINVAL;
112
113 return 0;
114}
115
116int qedr_query_device(struct ib_device *ibdev,
117 struct ib_device_attr *attr, struct ib_udata *udata)
118{
119 struct qedr_dev *dev = get_qedr_dev(ibdev);
120 struct qedr_device_attr *qattr = &dev->attr;
121
122 if (!dev->rdma_ctx) {
123 DP_ERR(dev,
124 "qedr_query_device called with invalid params rdma_ctx=%p\n",
125 dev->rdma_ctx);
126 return -EINVAL;
127 }
128
129 memset(attr, 0, sizeof(*attr));
130
131 attr->fw_ver = qattr->fw_ver;
132 attr->sys_image_guid = qattr->sys_image_guid;
133 attr->max_mr_size = qattr->max_mr_size;
134 attr->page_size_cap = qattr->page_size_caps;
135 attr->vendor_id = qattr->vendor_id;
136 attr->vendor_part_id = qattr->vendor_part_id;
137 attr->hw_ver = qattr->hw_ver;
138 attr->max_qp = qattr->max_qp;
139 attr->max_qp_wr = max_t(u32, qattr->max_sqe, qattr->max_rqe);
140 attr->device_cap_flags = IB_DEVICE_CURR_QP_STATE_MOD |
141 IB_DEVICE_RC_RNR_NAK_GEN |
142 IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_MGT_EXTENSIONS;
143
144 attr->max_sge = qattr->max_sge;
145 attr->max_sge_rd = qattr->max_sge;
146 attr->max_cq = qattr->max_cq;
147 attr->max_cqe = qattr->max_cqe;
148 attr->max_mr = qattr->max_mr;
149 attr->max_mw = qattr->max_mw;
150 attr->max_pd = qattr->max_pd;
151 attr->atomic_cap = dev->atomic_cap;
152 attr->max_fmr = qattr->max_fmr;
153 attr->max_map_per_fmr = 16;
154 attr->max_qp_init_rd_atom =
155 1 << (fls(qattr->max_qp_req_rd_atomic_resc) - 1);
156 attr->max_qp_rd_atom =
157 min(1 << (fls(qattr->max_qp_resp_rd_atomic_resc) - 1),
158 attr->max_qp_init_rd_atom);
159
160 attr->max_srq = qattr->max_srq;
161 attr->max_srq_sge = qattr->max_srq_sge;
162 attr->max_srq_wr = qattr->max_srq_wr;
163
164 attr->local_ca_ack_delay = qattr->dev_ack_delay;
165 attr->max_fast_reg_page_list_len = qattr->max_mr / 8;
166 attr->max_pkeys = QEDR_ROCE_PKEY_MAX;
167 attr->max_ah = qattr->max_ah;
168
169 return 0;
170}
171
172#define QEDR_SPEED_SDR (1)
173#define QEDR_SPEED_DDR (2)
174#define QEDR_SPEED_QDR (4)
175#define QEDR_SPEED_FDR10 (8)
176#define QEDR_SPEED_FDR (16)
177#define QEDR_SPEED_EDR (32)
178
179static inline void get_link_speed_and_width(int speed, u8 *ib_speed,
180 u8 *ib_width)
181{
182 switch (speed) {
183 case 1000:
184 *ib_speed = QEDR_SPEED_SDR;
185 *ib_width = IB_WIDTH_1X;
186 break;
187 case 10000:
188 *ib_speed = QEDR_SPEED_QDR;
189 *ib_width = IB_WIDTH_1X;
190 break;
191
192 case 20000:
193 *ib_speed = QEDR_SPEED_DDR;
194 *ib_width = IB_WIDTH_4X;
195 break;
196
197 case 25000:
198 *ib_speed = QEDR_SPEED_EDR;
199 *ib_width = IB_WIDTH_1X;
200 break;
201
202 case 40000:
203 *ib_speed = QEDR_SPEED_QDR;
204 *ib_width = IB_WIDTH_4X;
205 break;
206
207 case 50000:
208 *ib_speed = QEDR_SPEED_QDR;
209 *ib_width = IB_WIDTH_4X;
210 break;
211
212 case 100000:
213 *ib_speed = QEDR_SPEED_EDR;
214 *ib_width = IB_WIDTH_4X;
215 break;
216
217 default:
218
219 *ib_speed = QEDR_SPEED_SDR;
220 *ib_width = IB_WIDTH_1X;
221 }
222}
223
224int qedr_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *attr)
225{
226 struct qedr_dev *dev;
227 struct qed_rdma_port *rdma_port;
228
229 dev = get_qedr_dev(ibdev);
230 if (port > 1) {
231 DP_ERR(dev, "invalid_port=0x%x\n", port);
232 return -EINVAL;
233 }
234
235 if (!dev->rdma_ctx) {
236 DP_ERR(dev, "rdma_ctx is NULL\n");
237 return -EINVAL;
238 }
239
240 rdma_port = dev->ops->rdma_query_port(dev->rdma_ctx);
241 memset(attr, 0, sizeof(*attr));
242
243 if (rdma_port->port_state == QED_RDMA_PORT_UP) {
244 attr->state = IB_PORT_ACTIVE;
245 attr->phys_state = 5;
246 } else {
247 attr->state = IB_PORT_DOWN;
248 attr->phys_state = 3;
249 }
250 attr->max_mtu = IB_MTU_4096;
251 attr->active_mtu = iboe_get_mtu(dev->ndev->mtu);
252 attr->lid = 0;
253 attr->lmc = 0;
254 attr->sm_lid = 0;
255 attr->sm_sl = 0;
256 attr->port_cap_flags = IB_PORT_IP_BASED_GIDS;
257 attr->gid_tbl_len = QEDR_MAX_SGID;
258 attr->pkey_tbl_len = QEDR_ROCE_PKEY_TABLE_LEN;
259 attr->bad_pkey_cntr = rdma_port->pkey_bad_counter;
260 attr->qkey_viol_cntr = 0;
261 get_link_speed_and_width(rdma_port->link_speed,
262 &attr->active_speed, &attr->active_width);
263 attr->max_msg_sz = rdma_port->max_msg_size;
264 attr->max_vl_num = 4;
265
266 return 0;
267}
268
269int qedr_modify_port(struct ib_device *ibdev, u8 port, int mask,
270 struct ib_port_modify *props)
271{
272 struct qedr_dev *dev;
273
274 dev = get_qedr_dev(ibdev);
275 if (port > 1) {
276 DP_ERR(dev, "invalid_port=0x%x\n", port);
277 return -EINVAL;
278 }
279
280 return 0;
281}
282
283static int qedr_add_mmap(struct qedr_ucontext *uctx, u64 phy_addr,
284 unsigned long len)
285{
286 struct qedr_mm *mm;
287
288 mm = kzalloc(sizeof(*mm), GFP_KERNEL);
289 if (!mm)
290 return -ENOMEM;
291
292 mm->key.phy_addr = phy_addr;
293
294
295
296
297
298
299
300 mm->key.len = roundup(len, PAGE_SIZE);
301 INIT_LIST_HEAD(&mm->entry);
302
303 mutex_lock(&uctx->mm_list_lock);
304 list_add(&mm->entry, &uctx->mm_head);
305 mutex_unlock(&uctx->mm_list_lock);
306
307 DP_DEBUG(uctx->dev, QEDR_MSG_MISC,
308 "added (addr=0x%llx,len=0x%lx) for ctx=%p\n",
309 (unsigned long long)mm->key.phy_addr,
310 (unsigned long)mm->key.len, uctx);
311
312 return 0;
313}
314
315static bool qedr_search_mmap(struct qedr_ucontext *uctx, u64 phy_addr,
316 unsigned long len)
317{
318 bool found = false;
319 struct qedr_mm *mm;
320
321 mutex_lock(&uctx->mm_list_lock);
322 list_for_each_entry(mm, &uctx->mm_head, entry) {
323 if (len != mm->key.len || phy_addr != mm->key.phy_addr)
324 continue;
325
326 found = true;
327 break;
328 }
329 mutex_unlock(&uctx->mm_list_lock);
330 DP_DEBUG(uctx->dev, QEDR_MSG_MISC,
331 "searched for (addr=0x%llx,len=0x%lx) for ctx=%p, result=%d\n",
332 mm->key.phy_addr, mm->key.len, uctx, found);
333
334 return found;
335}
336
337struct ib_ucontext *qedr_alloc_ucontext(struct ib_device *ibdev,
338 struct ib_udata *udata)
339{
340 int rc;
341 struct qedr_ucontext *ctx;
342 struct qedr_alloc_ucontext_resp uresp;
343 struct qedr_dev *dev = get_qedr_dev(ibdev);
344 struct qed_rdma_add_user_out_params oparams;
345
346 if (!udata)
347 return ERR_PTR(-EFAULT);
348
349 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
350 if (!ctx)
351 return ERR_PTR(-ENOMEM);
352
353 rc = dev->ops->rdma_add_user(dev->rdma_ctx, &oparams);
354 if (rc) {
355 DP_ERR(dev,
356 "failed to allocate a DPI for a new RoCE application, rc=%d. To overcome this consider to increase the number of DPIs, increase the doorbell BAR size or just close unnecessary RoCE applications. In order to increase the number of DPIs consult the qedr readme\n",
357 rc);
358 goto err;
359 }
360
361 ctx->dpi = oparams.dpi;
362 ctx->dpi_addr = oparams.dpi_addr;
363 ctx->dpi_phys_addr = oparams.dpi_phys_addr;
364 ctx->dpi_size = oparams.dpi_size;
365 INIT_LIST_HEAD(&ctx->mm_head);
366 mutex_init(&ctx->mm_list_lock);
367
368 memset(&uresp, 0, sizeof(uresp));
369
370 uresp.db_pa = ctx->dpi_phys_addr;
371 uresp.db_size = ctx->dpi_size;
372 uresp.max_send_wr = dev->attr.max_sqe;
373 uresp.max_recv_wr = dev->attr.max_rqe;
374 uresp.max_srq_wr = dev->attr.max_srq_wr;
375 uresp.sges_per_send_wr = QEDR_MAX_SQE_ELEMENTS_PER_SQE;
376 uresp.sges_per_recv_wr = QEDR_MAX_RQE_ELEMENTS_PER_RQE;
377 uresp.sges_per_srq_wr = dev->attr.max_srq_sge;
378 uresp.max_cqes = QEDR_MAX_CQES;
379
380 rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
381 if (rc)
382 goto err;
383
384 ctx->dev = dev;
385
386 rc = qedr_add_mmap(ctx, ctx->dpi_phys_addr, ctx->dpi_size);
387 if (rc)
388 goto err;
389
390 DP_DEBUG(dev, QEDR_MSG_INIT, "Allocating user context %p\n",
391 &ctx->ibucontext);
392 return &ctx->ibucontext;
393
394err:
395 kfree(ctx);
396 return ERR_PTR(rc);
397}
398
399int qedr_dealloc_ucontext(struct ib_ucontext *ibctx)
400{
401 struct qedr_ucontext *uctx = get_qedr_ucontext(ibctx);
402 struct qedr_mm *mm, *tmp;
403 int status = 0;
404
405 DP_DEBUG(uctx->dev, QEDR_MSG_INIT, "Deallocating user context %p\n",
406 uctx);
407 uctx->dev->ops->rdma_remove_user(uctx->dev->rdma_ctx, uctx->dpi);
408
409 list_for_each_entry_safe(mm, tmp, &uctx->mm_head, entry) {
410 DP_DEBUG(uctx->dev, QEDR_MSG_MISC,
411 "deleted (addr=0x%llx,len=0x%lx) for ctx=%p\n",
412 mm->key.phy_addr, mm->key.len, uctx);
413 list_del(&mm->entry);
414 kfree(mm);
415 }
416
417 kfree(uctx);
418 return status;
419}
420
421int qedr_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
422{
423 struct qedr_ucontext *ucontext = get_qedr_ucontext(context);
424 struct qedr_dev *dev = get_qedr_dev(context->device);
425 unsigned long vm_page = vma->vm_pgoff << PAGE_SHIFT;
426 u64 unmapped_db = dev->db_phys_addr;
427 unsigned long len = (vma->vm_end - vma->vm_start);
428 int rc = 0;
429 bool found;
430
431 DP_DEBUG(dev, QEDR_MSG_INIT,
432 "qedr_mmap called vm_page=0x%lx vm_pgoff=0x%lx unmapped_db=0x%llx db_size=%x, len=%lx\n",
433 vm_page, vma->vm_pgoff, unmapped_db, dev->db_size, len);
434 if (vma->vm_start & (PAGE_SIZE - 1)) {
435 DP_ERR(dev, "Vma_start not page aligned = %ld\n",
436 vma->vm_start);
437 return -EINVAL;
438 }
439
440 found = qedr_search_mmap(ucontext, vm_page, len);
441 if (!found) {
442 DP_ERR(dev, "Vma_pgoff not found in mapped array = %ld\n",
443 vma->vm_pgoff);
444 return -EINVAL;
445 }
446
447 DP_DEBUG(dev, QEDR_MSG_INIT, "Mapping doorbell bar\n");
448
449 if ((vm_page >= unmapped_db) && (vm_page <= (unmapped_db +
450 dev->db_size))) {
451 DP_DEBUG(dev, QEDR_MSG_INIT, "Mapping doorbell bar\n");
452 if (vma->vm_flags & VM_READ) {
453 DP_ERR(dev, "Trying to map doorbell bar for read\n");
454 return -EPERM;
455 }
456
457 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
458
459 rc = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
460 PAGE_SIZE, vma->vm_page_prot);
461 } else {
462 DP_DEBUG(dev, QEDR_MSG_INIT, "Mapping chains\n");
463 rc = remap_pfn_range(vma, vma->vm_start,
464 vma->vm_pgoff, len, vma->vm_page_prot);
465 }
466 DP_DEBUG(dev, QEDR_MSG_INIT, "qedr_mmap return code: %d\n", rc);
467 return rc;
468}
469
470struct ib_pd *qedr_alloc_pd(struct ib_device *ibdev,
471 struct ib_ucontext *context, struct ib_udata *udata)
472{
473 struct qedr_dev *dev = get_qedr_dev(ibdev);
474 struct qedr_pd *pd;
475 u16 pd_id;
476 int rc;
477
478 DP_DEBUG(dev, QEDR_MSG_INIT, "Function called from: %s\n",
479 (udata && context) ? "User Lib" : "Kernel");
480
481 if (!dev->rdma_ctx) {
482 DP_ERR(dev, "invlaid RDMA context\n");
483 return ERR_PTR(-EINVAL);
484 }
485
486 pd = kzalloc(sizeof(*pd), GFP_KERNEL);
487 if (!pd)
488 return ERR_PTR(-ENOMEM);
489
490 rc = dev->ops->rdma_alloc_pd(dev->rdma_ctx, &pd_id);
491 if (rc)
492 goto err;
493
494 pd->pd_id = pd_id;
495
496 if (udata && context) {
497 struct qedr_alloc_pd_uresp uresp;
498
499 uresp.pd_id = pd_id;
500
501 rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
502 if (rc) {
503 DP_ERR(dev, "copy error pd_id=0x%x.\n", pd_id);
504 dev->ops->rdma_dealloc_pd(dev->rdma_ctx, pd_id);
505 goto err;
506 }
507
508 pd->uctx = get_qedr_ucontext(context);
509 pd->uctx->pd = pd;
510 }
511
512 return &pd->ibpd;
513
514err:
515 kfree(pd);
516 return ERR_PTR(rc);
517}
518
519int qedr_dealloc_pd(struct ib_pd *ibpd)
520{
521 struct qedr_dev *dev = get_qedr_dev(ibpd->device);
522 struct qedr_pd *pd = get_qedr_pd(ibpd);
523
524 if (!pd) {
525 pr_err("Invalid PD received in dealloc_pd\n");
526 return -EINVAL;
527 }
528
529 DP_DEBUG(dev, QEDR_MSG_INIT, "Deallocating PD %d\n", pd->pd_id);
530 dev->ops->rdma_dealloc_pd(dev->rdma_ctx, pd->pd_id);
531
532 kfree(pd);
533
534 return 0;
535}
536
537static void qedr_free_pbl(struct qedr_dev *dev,
538 struct qedr_pbl_info *pbl_info, struct qedr_pbl *pbl)
539{
540 struct pci_dev *pdev = dev->pdev;
541 int i;
542
543 for (i = 0; i < pbl_info->num_pbls; i++) {
544 if (!pbl[i].va)
545 continue;
546 dma_free_coherent(&pdev->dev, pbl_info->pbl_size,
547 pbl[i].va, pbl[i].pa);
548 }
549
550 kfree(pbl);
551}
552
553#define MIN_FW_PBL_PAGE_SIZE (4 * 1024)
554#define MAX_FW_PBL_PAGE_SIZE (64 * 1024)
555
556#define NUM_PBES_ON_PAGE(_page_size) (_page_size / sizeof(u64))
557#define MAX_PBES_ON_PAGE NUM_PBES_ON_PAGE(MAX_FW_PBL_PAGE_SIZE)
558#define MAX_PBES_TWO_LAYER (MAX_PBES_ON_PAGE * MAX_PBES_ON_PAGE)
559
560static struct qedr_pbl *qedr_alloc_pbl_tbl(struct qedr_dev *dev,
561 struct qedr_pbl_info *pbl_info,
562 gfp_t flags)
563{
564 struct pci_dev *pdev = dev->pdev;
565 struct qedr_pbl *pbl_table;
566 dma_addr_t *pbl_main_tbl;
567 dma_addr_t pa;
568 void *va;
569 int i;
570
571 pbl_table = kcalloc(pbl_info->num_pbls, sizeof(*pbl_table), flags);
572 if (!pbl_table)
573 return ERR_PTR(-ENOMEM);
574
575 for (i = 0; i < pbl_info->num_pbls; i++) {
576 va = dma_alloc_coherent(&pdev->dev, pbl_info->pbl_size,
577 &pa, flags);
578 if (!va)
579 goto err;
580
581 memset(va, 0, pbl_info->pbl_size);
582 pbl_table[i].va = va;
583 pbl_table[i].pa = pa;
584 }
585
586
587
588
589 pbl_main_tbl = (dma_addr_t *)pbl_table[0].va;
590 for (i = 0; i < pbl_info->num_pbls - 1; i++)
591 pbl_main_tbl[i] = pbl_table[i + 1].pa;
592
593 return pbl_table;
594
595err:
596 for (i--; i >= 0; i--)
597 dma_free_coherent(&pdev->dev, pbl_info->pbl_size,
598 pbl_table[i].va, pbl_table[i].pa);
599
600 qedr_free_pbl(dev, pbl_info, pbl_table);
601
602 return ERR_PTR(-ENOMEM);
603}
604
605static int qedr_prepare_pbl_tbl(struct qedr_dev *dev,
606 struct qedr_pbl_info *pbl_info,
607 u32 num_pbes, int two_layer_capable)
608{
609 u32 pbl_capacity;
610 u32 pbl_size;
611 u32 num_pbls;
612
613 if ((num_pbes > MAX_PBES_ON_PAGE) && two_layer_capable) {
614 if (num_pbes > MAX_PBES_TWO_LAYER) {
615 DP_ERR(dev, "prepare pbl table: too many pages %d\n",
616 num_pbes);
617 return -EINVAL;
618 }
619
620
621 pbl_size = MIN_FW_PBL_PAGE_SIZE;
622 pbl_capacity = NUM_PBES_ON_PAGE(pbl_size) *
623 NUM_PBES_ON_PAGE(pbl_size);
624
625 while (pbl_capacity < num_pbes) {
626 pbl_size *= 2;
627 pbl_capacity = pbl_size / sizeof(u64);
628 pbl_capacity = pbl_capacity * pbl_capacity;
629 }
630
631 num_pbls = DIV_ROUND_UP(num_pbes, NUM_PBES_ON_PAGE(pbl_size));
632 num_pbls++;
633 pbl_info->two_layered = true;
634 } else {
635
636 num_pbls = 1;
637 pbl_size = max_t(u32, MIN_FW_PBL_PAGE_SIZE,
638 roundup_pow_of_two((num_pbes * sizeof(u64))));
639 pbl_info->two_layered = false;
640 }
641
642 pbl_info->num_pbls = num_pbls;
643 pbl_info->pbl_size = pbl_size;
644 pbl_info->num_pbes = num_pbes;
645
646 DP_DEBUG(dev, QEDR_MSG_MR,
647 "prepare pbl table: num_pbes=%d, num_pbls=%d, pbl_size=%d\n",
648 pbl_info->num_pbes, pbl_info->num_pbls, pbl_info->pbl_size);
649
650 return 0;
651}
652
653static void qedr_populate_pbls(struct qedr_dev *dev, struct ib_umem *umem,
654 struct qedr_pbl *pbl,
655 struct qedr_pbl_info *pbl_info)
656{
657 int shift, pg_cnt, pages, pbe_cnt, total_num_pbes = 0;
658 struct qedr_pbl *pbl_tbl;
659 struct scatterlist *sg;
660 struct regpair *pbe;
661 int entry;
662 u32 addr;
663
664 if (!pbl_info->num_pbes)
665 return;
666
667
668
669
670 if (pbl_info->two_layered)
671 pbl_tbl = &pbl[1];
672 else
673 pbl_tbl = pbl;
674
675 pbe = (struct regpair *)pbl_tbl->va;
676 if (!pbe) {
677 DP_ERR(dev, "cannot populate PBL due to a NULL PBE\n");
678 return;
679 }
680
681 pbe_cnt = 0;
682
683 shift = ilog2(umem->page_size);
684
685 for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
686 pages = sg_dma_len(sg) >> shift;
687 for (pg_cnt = 0; pg_cnt < pages; pg_cnt++) {
688
689 pbe->lo = cpu_to_le32(sg_dma_address(sg) +
690 umem->page_size * pg_cnt);
691 addr = upper_32_bits(sg_dma_address(sg) +
692 umem->page_size * pg_cnt);
693 pbe->hi = cpu_to_le32(addr);
694 pbe_cnt++;
695 total_num_pbes++;
696 pbe++;
697
698 if (total_num_pbes == pbl_info->num_pbes)
699 return;
700
701
702
703
704 if (pbe_cnt == (pbl_info->pbl_size / sizeof(u64))) {
705 pbl_tbl++;
706 pbe = (struct regpair *)pbl_tbl->va;
707 pbe_cnt = 0;
708 }
709 }
710 }
711}
712
713static int qedr_copy_cq_uresp(struct qedr_dev *dev,
714 struct qedr_cq *cq, struct ib_udata *udata)
715{
716 struct qedr_create_cq_uresp uresp;
717 int rc;
718
719 memset(&uresp, 0, sizeof(uresp));
720
721 uresp.db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT);
722 uresp.icid = cq->icid;
723
724 rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
725 if (rc)
726 DP_ERR(dev, "copy error cqid=0x%x.\n", cq->icid);
727
728 return rc;
729}
730
731static void consume_cqe(struct qedr_cq *cq)
732{
733 if (cq->latest_cqe == cq->toggle_cqe)
734 cq->pbl_toggle ^= RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK;
735
736 cq->latest_cqe = qed_chain_consume(&cq->pbl);
737}
738
739static inline int qedr_align_cq_entries(int entries)
740{
741 u64 size, aligned_size;
742
743
744 size = (entries + 1) * QEDR_CQE_SIZE;
745 aligned_size = ALIGN(size, PAGE_SIZE);
746
747 return aligned_size / QEDR_CQE_SIZE;
748}
749
750static inline int qedr_init_user_queue(struct ib_ucontext *ib_ctx,
751 struct qedr_dev *dev,
752 struct qedr_userq *q,
753 u64 buf_addr, size_t buf_len,
754 int access, int dmasync)
755{
756 int page_cnt;
757 int rc;
758
759 q->buf_addr = buf_addr;
760 q->buf_len = buf_len;
761 q->umem = ib_umem_get(ib_ctx, q->buf_addr, q->buf_len, access, dmasync);
762 if (IS_ERR(q->umem)) {
763 DP_ERR(dev, "create user queue: failed ib_umem_get, got %ld\n",
764 PTR_ERR(q->umem));
765 return PTR_ERR(q->umem);
766 }
767
768 page_cnt = ib_umem_page_count(q->umem);
769 rc = qedr_prepare_pbl_tbl(dev, &q->pbl_info, page_cnt, 0);
770 if (rc)
771 goto err0;
772
773 q->pbl_tbl = qedr_alloc_pbl_tbl(dev, &q->pbl_info, GFP_KERNEL);
774 if (IS_ERR_OR_NULL(q->pbl_tbl))
775 goto err0;
776
777 qedr_populate_pbls(dev, q->umem, q->pbl_tbl, &q->pbl_info);
778
779 return 0;
780
781err0:
782 ib_umem_release(q->umem);
783
784 return rc;
785}
786
787static inline void qedr_init_cq_params(struct qedr_cq *cq,
788 struct qedr_ucontext *ctx,
789 struct qedr_dev *dev, int vector,
790 int chain_entries, int page_cnt,
791 u64 pbl_ptr,
792 struct qed_rdma_create_cq_in_params
793 *params)
794{
795 memset(params, 0, sizeof(*params));
796 params->cq_handle_hi = upper_32_bits((uintptr_t)cq);
797 params->cq_handle_lo = lower_32_bits((uintptr_t)cq);
798 params->cnq_id = vector;
799 params->cq_size = chain_entries - 1;
800 params->dpi = (ctx) ? ctx->dpi : dev->dpi;
801 params->pbl_num_pages = page_cnt;
802 params->pbl_ptr = pbl_ptr;
803 params->pbl_two_level = 0;
804}
805
806static void doorbell_cq(struct qedr_cq *cq, u32 cons, u8 flags)
807{
808
809 wmb();
810 cq->db.data.agg_flags = flags;
811 cq->db.data.value = cpu_to_le32(cons);
812 writeq(cq->db.raw, cq->db_addr);
813
814
815 mmiowb();
816}
817
818int qedr_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
819{
820 struct qedr_cq *cq = get_qedr_cq(ibcq);
821 unsigned long sflags;
822
823 if (cq->cq_type == QEDR_CQ_TYPE_GSI)
824 return 0;
825
826 spin_lock_irqsave(&cq->cq_lock, sflags);
827
828 cq->arm_flags = 0;
829
830 if (flags & IB_CQ_SOLICITED)
831 cq->arm_flags |= DQ_UCM_ROCE_CQ_ARM_SE_CF_CMD;
832
833 if (flags & IB_CQ_NEXT_COMP)
834 cq->arm_flags |= DQ_UCM_ROCE_CQ_ARM_CF_CMD;
835
836 doorbell_cq(cq, cq->cq_cons - 1, cq->arm_flags);
837
838 spin_unlock_irqrestore(&cq->cq_lock, sflags);
839
840 return 0;
841}
842
843struct ib_cq *qedr_create_cq(struct ib_device *ibdev,
844 const struct ib_cq_init_attr *attr,
845 struct ib_ucontext *ib_ctx, struct ib_udata *udata)
846{
847 struct qedr_ucontext *ctx = get_qedr_ucontext(ib_ctx);
848 struct qed_rdma_destroy_cq_out_params destroy_oparams;
849 struct qed_rdma_destroy_cq_in_params destroy_iparams;
850 struct qedr_dev *dev = get_qedr_dev(ibdev);
851 struct qed_rdma_create_cq_in_params params;
852 struct qedr_create_cq_ureq ureq;
853 int vector = attr->comp_vector;
854 int entries = attr->cqe;
855 struct qedr_cq *cq;
856 int chain_entries;
857 int page_cnt;
858 u64 pbl_ptr;
859 u16 icid;
860 int rc;
861
862 DP_DEBUG(dev, QEDR_MSG_INIT,
863 "create_cq: called from %s. entries=%d, vector=%d\n",
864 udata ? "User Lib" : "Kernel", entries, vector);
865
866 if (entries > QEDR_MAX_CQES) {
867 DP_ERR(dev,
868 "create cq: the number of entries %d is too high. Must be equal or below %d.\n",
869 entries, QEDR_MAX_CQES);
870 return ERR_PTR(-EINVAL);
871 }
872
873 chain_entries = qedr_align_cq_entries(entries);
874 chain_entries = min_t(int, chain_entries, QEDR_MAX_CQES);
875
876 cq = kzalloc(sizeof(*cq), GFP_KERNEL);
877 if (!cq)
878 return ERR_PTR(-ENOMEM);
879
880 if (udata) {
881 memset(&ureq, 0, sizeof(ureq));
882 if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) {
883 DP_ERR(dev,
884 "create cq: problem copying data from user space\n");
885 goto err0;
886 }
887
888 if (!ureq.len) {
889 DP_ERR(dev,
890 "create cq: cannot create a cq with 0 entries\n");
891 goto err0;
892 }
893
894 cq->cq_type = QEDR_CQ_TYPE_USER;
895
896 rc = qedr_init_user_queue(ib_ctx, dev, &cq->q, ureq.addr,
897 ureq.len, IB_ACCESS_LOCAL_WRITE, 1);
898 if (rc)
899 goto err0;
900
901 pbl_ptr = cq->q.pbl_tbl->pa;
902 page_cnt = cq->q.pbl_info.num_pbes;
903
904 cq->ibcq.cqe = chain_entries;
905 } else {
906 cq->cq_type = QEDR_CQ_TYPE_KERNEL;
907
908 rc = dev->ops->common->chain_alloc(dev->cdev,
909 QED_CHAIN_USE_TO_CONSUME,
910 QED_CHAIN_MODE_PBL,
911 QED_CHAIN_CNT_TYPE_U32,
912 chain_entries,
913 sizeof(union rdma_cqe),
914 &cq->pbl);
915 if (rc)
916 goto err1;
917
918 page_cnt = qed_chain_get_page_cnt(&cq->pbl);
919 pbl_ptr = qed_chain_get_pbl_phys(&cq->pbl);
920 cq->ibcq.cqe = cq->pbl.capacity;
921 }
922
923 qedr_init_cq_params(cq, ctx, dev, vector, chain_entries, page_cnt,
924 pbl_ptr, ¶ms);
925
926 rc = dev->ops->rdma_create_cq(dev->rdma_ctx, ¶ms, &icid);
927 if (rc)
928 goto err2;
929
930 cq->icid = icid;
931 cq->sig = QEDR_CQ_MAGIC_NUMBER;
932 spin_lock_init(&cq->cq_lock);
933
934 if (ib_ctx) {
935 rc = qedr_copy_cq_uresp(dev, cq, udata);
936 if (rc)
937 goto err3;
938 } else {
939
940 cq->db_addr = dev->db_addr +
941 DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT);
942 cq->db.data.icid = cq->icid;
943 cq->db.data.params = DB_AGG_CMD_SET <<
944 RDMA_PWM_VAL32_DATA_AGG_CMD_SHIFT;
945
946
947 cq->toggle_cqe = qed_chain_get_last_elem(&cq->pbl);
948 cq->pbl_toggle = RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK;
949 cq->latest_cqe = NULL;
950 consume_cqe(cq);
951 cq->cq_cons = qed_chain_get_cons_idx_u32(&cq->pbl);
952 }
953
954 DP_DEBUG(dev, QEDR_MSG_CQ,
955 "create cq: icid=0x%0x, addr=%p, size(entries)=0x%0x\n",
956 cq->icid, cq, params.cq_size);
957
958 return &cq->ibcq;
959
960err3:
961 destroy_iparams.icid = cq->icid;
962 dev->ops->rdma_destroy_cq(dev->rdma_ctx, &destroy_iparams,
963 &destroy_oparams);
964err2:
965 if (udata)
966 qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl);
967 else
968 dev->ops->common->chain_free(dev->cdev, &cq->pbl);
969err1:
970 if (udata)
971 ib_umem_release(cq->q.umem);
972err0:
973 kfree(cq);
974 return ERR_PTR(-EINVAL);
975}
976
977int qedr_resize_cq(struct ib_cq *ibcq, int new_cnt, struct ib_udata *udata)
978{
979 struct qedr_dev *dev = get_qedr_dev(ibcq->device);
980 struct qedr_cq *cq = get_qedr_cq(ibcq);
981
982 DP_ERR(dev, "cq %p RESIZE NOT SUPPORTED\n", cq);
983
984 return 0;
985}
986
987int qedr_destroy_cq(struct ib_cq *ibcq)
988{
989 struct qedr_dev *dev = get_qedr_dev(ibcq->device);
990 struct qed_rdma_destroy_cq_out_params oparams;
991 struct qed_rdma_destroy_cq_in_params iparams;
992 struct qedr_cq *cq = get_qedr_cq(ibcq);
993
994 DP_DEBUG(dev, QEDR_MSG_CQ, "destroy cq: cq_id %d", cq->icid);
995
996
997 if (cq->cq_type != QEDR_CQ_TYPE_GSI) {
998 int rc;
999
1000 iparams.icid = cq->icid;
1001 rc = dev->ops->rdma_destroy_cq(dev->rdma_ctx, &iparams,
1002 &oparams);
1003 if (rc)
1004 return rc;
1005 dev->ops->common->chain_free(dev->cdev, &cq->pbl);
1006 }
1007
1008 if (ibcq->uobject && ibcq->uobject->context) {
1009 qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl);
1010 ib_umem_release(cq->q.umem);
1011 }
1012
1013 kfree(cq);
1014
1015 return 0;
1016}
1017
1018static inline int get_gid_info_from_table(struct ib_qp *ibqp,
1019 struct ib_qp_attr *attr,
1020 int attr_mask,
1021 struct qed_rdma_modify_qp_in_params
1022 *qp_params)
1023{
1024 enum rdma_network_type nw_type;
1025 struct ib_gid_attr gid_attr;
1026 union ib_gid gid;
1027 u32 ipv4_addr;
1028 int rc = 0;
1029 int i;
1030
1031 rc = ib_get_cached_gid(ibqp->device, attr->ah_attr.port_num,
1032 attr->ah_attr.grh.sgid_index, &gid, &gid_attr);
1033 if (rc)
1034 return rc;
1035
1036 if (!memcmp(&gid, &zgid, sizeof(gid)))
1037 return -ENOENT;
1038
1039 if (gid_attr.ndev) {
1040 qp_params->vlan_id = rdma_vlan_dev_vlan_id(gid_attr.ndev);
1041
1042 dev_put(gid_attr.ndev);
1043 nw_type = ib_gid_to_network_type(gid_attr.gid_type, &gid);
1044 switch (nw_type) {
1045 case RDMA_NETWORK_IPV6:
1046 memcpy(&qp_params->sgid.bytes[0], &gid.raw[0],
1047 sizeof(qp_params->sgid));
1048 memcpy(&qp_params->dgid.bytes[0],
1049 &attr->ah_attr.grh.dgid,
1050 sizeof(qp_params->dgid));
1051 qp_params->roce_mode = ROCE_V2_IPV6;
1052 SET_FIELD(qp_params->modify_flags,
1053 QED_ROCE_MODIFY_QP_VALID_ROCE_MODE, 1);
1054 break;
1055 case RDMA_NETWORK_IB:
1056 memcpy(&qp_params->sgid.bytes[0], &gid.raw[0],
1057 sizeof(qp_params->sgid));
1058 memcpy(&qp_params->dgid.bytes[0],
1059 &attr->ah_attr.grh.dgid,
1060 sizeof(qp_params->dgid));
1061 qp_params->roce_mode = ROCE_V1;
1062 break;
1063 case RDMA_NETWORK_IPV4:
1064 memset(&qp_params->sgid, 0, sizeof(qp_params->sgid));
1065 memset(&qp_params->dgid, 0, sizeof(qp_params->dgid));
1066 ipv4_addr = qedr_get_ipv4_from_gid(gid.raw);
1067 qp_params->sgid.ipv4_addr = ipv4_addr;
1068 ipv4_addr =
1069 qedr_get_ipv4_from_gid(attr->ah_attr.grh.dgid.raw);
1070 qp_params->dgid.ipv4_addr = ipv4_addr;
1071 SET_FIELD(qp_params->modify_flags,
1072 QED_ROCE_MODIFY_QP_VALID_ROCE_MODE, 1);
1073 qp_params->roce_mode = ROCE_V2_IPV4;
1074 break;
1075 }
1076 }
1077
1078 for (i = 0; i < 4; i++) {
1079 qp_params->sgid.dwords[i] = ntohl(qp_params->sgid.dwords[i]);
1080 qp_params->dgid.dwords[i] = ntohl(qp_params->dgid.dwords[i]);
1081 }
1082
1083 if (qp_params->vlan_id >= VLAN_CFI_MASK)
1084 qp_params->vlan_id = 0;
1085
1086 return 0;
1087}
1088
1089static void qedr_cleanup_user_sq(struct qedr_dev *dev, struct qedr_qp *qp)
1090{
1091 qedr_free_pbl(dev, &qp->usq.pbl_info, qp->usq.pbl_tbl);
1092 ib_umem_release(qp->usq.umem);
1093}
1094
1095static void qedr_cleanup_user_rq(struct qedr_dev *dev, struct qedr_qp *qp)
1096{
1097 qedr_free_pbl(dev, &qp->urq.pbl_info, qp->urq.pbl_tbl);
1098 ib_umem_release(qp->urq.umem);
1099}
1100
1101static void qedr_cleanup_kernel_sq(struct qedr_dev *dev, struct qedr_qp *qp)
1102{
1103 dev->ops->common->chain_free(dev->cdev, &qp->sq.pbl);
1104 kfree(qp->wqe_wr_id);
1105}
1106
1107static void qedr_cleanup_kernel_rq(struct qedr_dev *dev, struct qedr_qp *qp)
1108{
1109 dev->ops->common->chain_free(dev->cdev, &qp->rq.pbl);
1110 kfree(qp->rqe_wr_id);
1111}
1112
1113static int qedr_check_qp_attrs(struct ib_pd *ibpd, struct qedr_dev *dev,
1114 struct ib_qp_init_attr *attrs)
1115{
1116 struct qedr_device_attr *qattr = &dev->attr;
1117
1118
1119 if (attrs->qp_type != IB_QPT_RC && attrs->qp_type != IB_QPT_GSI) {
1120 DP_DEBUG(dev, QEDR_MSG_QP,
1121 "create qp: unsupported qp type=0x%x requested\n",
1122 attrs->qp_type);
1123 return -EINVAL;
1124 }
1125
1126 if (attrs->cap.max_send_wr > qattr->max_sqe) {
1127 DP_ERR(dev,
1128 "create qp: cannot create a SQ with %d elements (max_send_wr=0x%x)\n",
1129 attrs->cap.max_send_wr, qattr->max_sqe);
1130 return -EINVAL;
1131 }
1132
1133 if (attrs->cap.max_inline_data > qattr->max_inline) {
1134 DP_ERR(dev,
1135 "create qp: unsupported inline data size=0x%x requested (max_inline=0x%x)\n",
1136 attrs->cap.max_inline_data, qattr->max_inline);
1137 return -EINVAL;
1138 }
1139
1140 if (attrs->cap.max_send_sge > qattr->max_sge) {
1141 DP_ERR(dev,
1142 "create qp: unsupported send_sge=0x%x requested (max_send_sge=0x%x)\n",
1143 attrs->cap.max_send_sge, qattr->max_sge);
1144 return -EINVAL;
1145 }
1146
1147 if (attrs->cap.max_recv_sge > qattr->max_sge) {
1148 DP_ERR(dev,
1149 "create qp: unsupported recv_sge=0x%x requested (max_recv_sge=0x%x)\n",
1150 attrs->cap.max_recv_sge, qattr->max_sge);
1151 return -EINVAL;
1152 }
1153
1154
1155 if (ibpd->uobject && attrs->qp_type == IB_QPT_GSI) {
1156 DP_ERR(dev,
1157 "create qp: userspace can't create special QPs of type=0x%x\n",
1158 attrs->qp_type);
1159 return -EINVAL;
1160 }
1161
1162 return 0;
1163}
1164
1165static void qedr_copy_rq_uresp(struct qedr_create_qp_uresp *uresp,
1166 struct qedr_qp *qp)
1167{
1168 uresp->rq_db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_ROCE_RQ_PROD);
1169 uresp->rq_icid = qp->icid;
1170}
1171
1172static void qedr_copy_sq_uresp(struct qedr_create_qp_uresp *uresp,
1173 struct qedr_qp *qp)
1174{
1175 uresp->sq_db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD);
1176 uresp->sq_icid = qp->icid + 1;
1177}
1178
1179static int qedr_copy_qp_uresp(struct qedr_dev *dev,
1180 struct qedr_qp *qp, struct ib_udata *udata)
1181{
1182 struct qedr_create_qp_uresp uresp;
1183 int rc;
1184
1185 memset(&uresp, 0, sizeof(uresp));
1186 qedr_copy_sq_uresp(&uresp, qp);
1187 qedr_copy_rq_uresp(&uresp, qp);
1188
1189 uresp.atomic_supported = dev->atomic_cap != IB_ATOMIC_NONE;
1190 uresp.qp_id = qp->qp_id;
1191
1192 rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
1193 if (rc)
1194 DP_ERR(dev,
1195 "create qp: failed a copy to user space with qp icid=0x%x.\n",
1196 qp->icid);
1197
1198 return rc;
1199}
1200
1201static void qedr_set_qp_init_params(struct qedr_dev *dev,
1202 struct qedr_qp *qp,
1203 struct qedr_pd *pd,
1204 struct ib_qp_init_attr *attrs)
1205{
1206 qp->pd = pd;
1207
1208 spin_lock_init(&qp->q_lock);
1209
1210 qp->qp_type = attrs->qp_type;
1211 qp->max_inline_data = attrs->cap.max_inline_data;
1212 qp->sq.max_sges = attrs->cap.max_send_sge;
1213 qp->state = QED_ROCE_QP_STATE_RESET;
1214 qp->signaled = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR) ? true : false;
1215 qp->sq_cq = get_qedr_cq(attrs->send_cq);
1216 qp->rq_cq = get_qedr_cq(attrs->recv_cq);
1217 qp->dev = dev;
1218
1219 DP_DEBUG(dev, QEDR_MSG_QP,
1220 "QP params:\tpd = %d, qp_type = %d, max_inline_data = %d, state = %d, signaled = %d, use_srq=%d\n",
1221 pd->pd_id, qp->qp_type, qp->max_inline_data,
1222 qp->state, qp->signaled, (attrs->srq) ? 1 : 0);
1223 DP_DEBUG(dev, QEDR_MSG_QP,
1224 "SQ params:\tsq_max_sges = %d, sq_cq_id = %d\n",
1225 qp->sq.max_sges, qp->sq_cq->icid);
1226 qp->rq.max_sges = attrs->cap.max_recv_sge;
1227 DP_DEBUG(dev, QEDR_MSG_QP,
1228 "RQ params:\trq_max_sges = %d, rq_cq_id = %d\n",
1229 qp->rq.max_sges, qp->rq_cq->icid);
1230}
1231
1232static inline void
1233qedr_init_qp_user_params(struct qed_rdma_create_qp_in_params *params,
1234 struct qedr_create_qp_ureq *ureq)
1235{
1236
1237 params->qp_handle_lo = ureq->qp_handle_lo;
1238 params->qp_handle_hi = ureq->qp_handle_hi;
1239}
1240
1241static inline void
1242qedr_init_qp_kernel_doorbell_sq(struct qedr_dev *dev, struct qedr_qp *qp)
1243{
1244 qp->sq.db = dev->db_addr +
1245 DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD);
1246 qp->sq.db_data.data.icid = qp->icid + 1;
1247}
1248
1249static inline void
1250qedr_init_qp_kernel_doorbell_rq(struct qedr_dev *dev, struct qedr_qp *qp)
1251{
1252 qp->rq.db = dev->db_addr +
1253 DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_ROCE_RQ_PROD);
1254 qp->rq.db_data.data.icid = qp->icid;
1255}
1256
1257static inline int
1258qedr_init_qp_kernel_params_rq(struct qedr_dev *dev,
1259 struct qedr_qp *qp, struct ib_qp_init_attr *attrs)
1260{
1261
1262 qp->rqe_wr_id = kcalloc(qp->rq.max_wr, sizeof(*qp->rqe_wr_id),
1263 GFP_KERNEL);
1264 if (!qp->rqe_wr_id)
1265 return -ENOMEM;
1266
1267 DP_DEBUG(dev, QEDR_MSG_QP, "RQ max_wr set to %d.\n", qp->rq.max_wr);
1268
1269 return 0;
1270}
1271
1272static inline int
1273qedr_init_qp_kernel_params_sq(struct qedr_dev *dev,
1274 struct qedr_qp *qp,
1275 struct ib_qp_init_attr *attrs,
1276 struct qed_rdma_create_qp_in_params *params)
1277{
1278 u32 temp_max_wr;
1279
1280
1281 temp_max_wr = attrs->cap.max_send_wr * dev->wq_multiplier;
1282 temp_max_wr = min_t(u32, temp_max_wr, dev->attr.max_sqe);
1283
1284
1285 qp->sq.max_wr = (u16)temp_max_wr;
1286 qp->wqe_wr_id = kcalloc(qp->sq.max_wr, sizeof(*qp->wqe_wr_id),
1287 GFP_KERNEL);
1288 if (!qp->wqe_wr_id)
1289 return -ENOMEM;
1290
1291 DP_DEBUG(dev, QEDR_MSG_QP, "SQ max_wr set to %d.\n", qp->sq.max_wr);
1292
1293
1294 params->qp_handle_lo = lower_32_bits((uintptr_t)qp);
1295 params->qp_handle_hi = upper_32_bits((uintptr_t)qp);
1296
1297 return 0;
1298}
1299
1300static inline int qedr_init_qp_kernel_sq(struct qedr_dev *dev,
1301 struct qedr_qp *qp,
1302 struct ib_qp_init_attr *attrs)
1303{
1304 u32 n_sq_elems, n_sq_entries;
1305 int rc;
1306
1307
1308
1309
1310
1311 n_sq_entries = attrs->cap.max_send_wr;
1312 n_sq_entries = min_t(u32, n_sq_entries, dev->attr.max_sqe);
1313 n_sq_entries = max_t(u32, n_sq_entries, 1);
1314 n_sq_elems = n_sq_entries * QEDR_MAX_SQE_ELEMENTS_PER_SQE;
1315 rc = dev->ops->common->chain_alloc(dev->cdev,
1316 QED_CHAIN_USE_TO_PRODUCE,
1317 QED_CHAIN_MODE_PBL,
1318 QED_CHAIN_CNT_TYPE_U32,
1319 n_sq_elems,
1320 QEDR_SQE_ELEMENT_SIZE,
1321 &qp->sq.pbl);
1322 if (rc) {
1323 DP_ERR(dev, "failed to allocate QP %p SQ\n", qp);
1324 return rc;
1325 }
1326
1327 DP_DEBUG(dev, QEDR_MSG_SQ,
1328 "SQ Pbl base addr = %llx max_send_wr=%d max_wr=%d capacity=%d, rc=%d\n",
1329 qed_chain_get_pbl_phys(&qp->sq.pbl), attrs->cap.max_send_wr,
1330 n_sq_entries, qed_chain_get_capacity(&qp->sq.pbl), rc);
1331 return 0;
1332}
1333
1334static inline int qedr_init_qp_kernel_rq(struct qedr_dev *dev,
1335 struct qedr_qp *qp,
1336 struct ib_qp_init_attr *attrs)
1337{
1338 u32 n_rq_elems, n_rq_entries;
1339 int rc;
1340
1341
1342
1343
1344
1345 n_rq_entries = max_t(u32, attrs->cap.max_recv_wr, 1);
1346 n_rq_elems = n_rq_entries * QEDR_MAX_RQE_ELEMENTS_PER_RQE;
1347 rc = dev->ops->common->chain_alloc(dev->cdev,
1348 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1349 QED_CHAIN_MODE_PBL,
1350 QED_CHAIN_CNT_TYPE_U32,
1351 n_rq_elems,
1352 QEDR_RQE_ELEMENT_SIZE,
1353 &qp->rq.pbl);
1354
1355 if (rc) {
1356 DP_ERR(dev, "failed to allocate memory for QP %p RQ\n", qp);
1357 return -ENOMEM;
1358 }
1359
1360 DP_DEBUG(dev, QEDR_MSG_RQ,
1361 "RQ Pbl base addr = %llx max_recv_wr=%d max_wr=%d capacity=%d, rc=%d\n",
1362 qed_chain_get_pbl_phys(&qp->rq.pbl), attrs->cap.max_recv_wr,
1363 n_rq_entries, qed_chain_get_capacity(&qp->rq.pbl), rc);
1364
1365
1366 qp->rq.max_wr = (u16)n_rq_entries;
1367
1368 return 0;
1369}
1370
1371static inline void
1372qedr_init_qp_in_params_sq(struct qedr_dev *dev,
1373 struct qedr_pd *pd,
1374 struct qedr_qp *qp,
1375 struct ib_qp_init_attr *attrs,
1376 struct ib_udata *udata,
1377 struct qed_rdma_create_qp_in_params *params)
1378{
1379
1380 params->qp_handle_async_lo = lower_32_bits((uintptr_t)qp);
1381 params->qp_handle_async_hi = upper_32_bits((uintptr_t)qp);
1382
1383 params->signal_all = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR);
1384 params->fmr_and_reserved_lkey = !udata;
1385 params->pd = pd->pd_id;
1386 params->dpi = pd->uctx ? pd->uctx->dpi : dev->dpi;
1387 params->sq_cq_id = get_qedr_cq(attrs->send_cq)->icid;
1388 params->max_sq_sges = 0;
1389 params->stats_queue = 0;
1390
1391 if (udata) {
1392 params->sq_num_pages = qp->usq.pbl_info.num_pbes;
1393 params->sq_pbl_ptr = qp->usq.pbl_tbl->pa;
1394 } else {
1395 params->sq_num_pages = qed_chain_get_page_cnt(&qp->sq.pbl);
1396 params->sq_pbl_ptr = qed_chain_get_pbl_phys(&qp->sq.pbl);
1397 }
1398}
1399
1400static inline void
1401qedr_init_qp_in_params_rq(struct qedr_qp *qp,
1402 struct ib_qp_init_attr *attrs,
1403 struct ib_udata *udata,
1404 struct qed_rdma_create_qp_in_params *params)
1405{
1406 params->rq_cq_id = get_qedr_cq(attrs->recv_cq)->icid;
1407 params->srq_id = 0;
1408 params->use_srq = false;
1409
1410 if (udata) {
1411 params->rq_num_pages = qp->urq.pbl_info.num_pbes;
1412 params->rq_pbl_ptr = qp->urq.pbl_tbl->pa;
1413 } else {
1414 params->rq_num_pages = qed_chain_get_page_cnt(&qp->rq.pbl);
1415 params->rq_pbl_ptr = qed_chain_get_pbl_phys(&qp->rq.pbl);
1416 }
1417}
1418
1419static inline void qedr_qp_user_print(struct qedr_dev *dev, struct qedr_qp *qp)
1420{
1421 DP_DEBUG(dev, QEDR_MSG_QP,
1422 "create qp: successfully created user QP. qp=%p, sq_addr=0x%llx, sq_len=%zd, rq_addr=0x%llx, rq_len=%zd\n",
1423 qp, qp->usq.buf_addr, qp->usq.buf_len, qp->urq.buf_addr,
1424 qp->urq.buf_len);
1425}
1426
1427static inline int qedr_init_user_qp(struct ib_ucontext *ib_ctx,
1428 struct qedr_dev *dev,
1429 struct qedr_qp *qp,
1430 struct qedr_create_qp_ureq *ureq)
1431{
1432 int rc;
1433
1434
1435 rc = qedr_init_user_queue(ib_ctx, dev, &qp->usq, ureq->sq_addr,
1436 ureq->sq_len, 0, 0);
1437 if (rc)
1438 return rc;
1439
1440
1441 rc = qedr_init_user_queue(ib_ctx, dev, &qp->urq, ureq->rq_addr,
1442 ureq->rq_len, 0, 0);
1443
1444 if (rc)
1445 qedr_cleanup_user_sq(dev, qp);
1446 return rc;
1447}
1448
1449static inline int
1450qedr_init_kernel_qp(struct qedr_dev *dev,
1451 struct qedr_qp *qp,
1452 struct ib_qp_init_attr *attrs,
1453 struct qed_rdma_create_qp_in_params *params)
1454{
1455 int rc;
1456
1457 rc = qedr_init_qp_kernel_sq(dev, qp, attrs);
1458 if (rc) {
1459 DP_ERR(dev, "failed to init kernel QP %p SQ\n", qp);
1460 return rc;
1461 }
1462
1463 rc = qedr_init_qp_kernel_params_sq(dev, qp, attrs, params);
1464 if (rc) {
1465 dev->ops->common->chain_free(dev->cdev, &qp->sq.pbl);
1466 DP_ERR(dev, "failed to init kernel QP %p SQ params\n", qp);
1467 return rc;
1468 }
1469
1470 rc = qedr_init_qp_kernel_rq(dev, qp, attrs);
1471 if (rc) {
1472 qedr_cleanup_kernel_sq(dev, qp);
1473 DP_ERR(dev, "failed to init kernel QP %p RQ\n", qp);
1474 return rc;
1475 }
1476
1477 rc = qedr_init_qp_kernel_params_rq(dev, qp, attrs);
1478 if (rc) {
1479 DP_ERR(dev, "failed to init kernel QP %p RQ params\n", qp);
1480 qedr_cleanup_kernel_sq(dev, qp);
1481 dev->ops->common->chain_free(dev->cdev, &qp->rq.pbl);
1482 return rc;
1483 }
1484
1485 return rc;
1486}
1487
1488struct ib_qp *qedr_create_qp(struct ib_pd *ibpd,
1489 struct ib_qp_init_attr *attrs,
1490 struct ib_udata *udata)
1491{
1492 struct qedr_dev *dev = get_qedr_dev(ibpd->device);
1493 struct qed_rdma_create_qp_out_params out_params;
1494 struct qed_rdma_create_qp_in_params in_params;
1495 struct qedr_pd *pd = get_qedr_pd(ibpd);
1496 struct ib_ucontext *ib_ctx = NULL;
1497 struct qedr_ucontext *ctx = NULL;
1498 struct qedr_create_qp_ureq ureq;
1499 struct qedr_qp *qp;
1500 struct ib_qp *ibqp;
1501 int rc = 0;
1502
1503 DP_DEBUG(dev, QEDR_MSG_QP, "create qp: called from %s, pd=%p\n",
1504 udata ? "user library" : "kernel", pd);
1505
1506 rc = qedr_check_qp_attrs(ibpd, dev, attrs);
1507 if (rc)
1508 return ERR_PTR(rc);
1509
1510 if (attrs->srq)
1511 return ERR_PTR(-EINVAL);
1512
1513 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
1514 if (!qp)
1515 return ERR_PTR(-ENOMEM);
1516
1517 DP_DEBUG(dev, QEDR_MSG_QP,
1518 "create qp: sq_cq=%p, sq_icid=%d, rq_cq=%p, rq_icid=%d\n",
1519 get_qedr_cq(attrs->send_cq),
1520 get_qedr_cq(attrs->send_cq)->icid,
1521 get_qedr_cq(attrs->recv_cq),
1522 get_qedr_cq(attrs->recv_cq)->icid);
1523
1524 qedr_set_qp_init_params(dev, qp, pd, attrs);
1525
1526 if (attrs->qp_type == IB_QPT_GSI) {
1527 if (udata) {
1528 DP_ERR(dev,
1529 "create qp: unexpected udata when creating GSI QP\n");
1530 goto err0;
1531 }
1532 ibqp = qedr_create_gsi_qp(dev, attrs, qp);
1533 if (IS_ERR(ibqp))
1534 kfree(qp);
1535 return ibqp;
1536 }
1537
1538 memset(&in_params, 0, sizeof(in_params));
1539
1540 if (udata) {
1541 if (!(udata && ibpd->uobject && ibpd->uobject->context))
1542 goto err0;
1543
1544 ib_ctx = ibpd->uobject->context;
1545 ctx = get_qedr_ucontext(ib_ctx);
1546
1547 memset(&ureq, 0, sizeof(ureq));
1548 if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) {
1549 DP_ERR(dev,
1550 "create qp: problem copying data from user space\n");
1551 goto err0;
1552 }
1553
1554 rc = qedr_init_user_qp(ib_ctx, dev, qp, &ureq);
1555 if (rc)
1556 goto err0;
1557
1558 qedr_init_qp_user_params(&in_params, &ureq);
1559 } else {
1560 rc = qedr_init_kernel_qp(dev, qp, attrs, &in_params);
1561 if (rc)
1562 goto err0;
1563 }
1564
1565 qedr_init_qp_in_params_sq(dev, pd, qp, attrs, udata, &in_params);
1566 qedr_init_qp_in_params_rq(qp, attrs, udata, &in_params);
1567
1568 qp->qed_qp = dev->ops->rdma_create_qp(dev->rdma_ctx,
1569 &in_params, &out_params);
1570
1571 if (!qp->qed_qp)
1572 goto err1;
1573
1574 qp->qp_id = out_params.qp_id;
1575 qp->icid = out_params.icid;
1576 qp->ibqp.qp_num = qp->qp_id;
1577
1578 if (udata) {
1579 rc = qedr_copy_qp_uresp(dev, qp, udata);
1580 if (rc)
1581 goto err2;
1582
1583 qedr_qp_user_print(dev, qp);
1584 } else {
1585 qedr_init_qp_kernel_doorbell_sq(dev, qp);
1586 qedr_init_qp_kernel_doorbell_rq(dev, qp);
1587 }
1588
1589 DP_DEBUG(dev, QEDR_MSG_QP, "created %s space QP %p\n",
1590 udata ? "user" : "kernel", qp);
1591
1592 return &qp->ibqp;
1593
1594err2:
1595 rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);
1596 if (rc)
1597 DP_ERR(dev, "create qp: fatal fault. rc=%d", rc);
1598err1:
1599 if (udata) {
1600 qedr_cleanup_user_sq(dev, qp);
1601 qedr_cleanup_user_rq(dev, qp);
1602 } else {
1603 qedr_cleanup_kernel_sq(dev, qp);
1604 qedr_cleanup_kernel_rq(dev, qp);
1605 }
1606
1607err0:
1608 kfree(qp);
1609
1610 return ERR_PTR(-EFAULT);
1611}
1612
1613static enum ib_qp_state qedr_get_ibqp_state(enum qed_roce_qp_state qp_state)
1614{
1615 switch (qp_state) {
1616 case QED_ROCE_QP_STATE_RESET:
1617 return IB_QPS_RESET;
1618 case QED_ROCE_QP_STATE_INIT:
1619 return IB_QPS_INIT;
1620 case QED_ROCE_QP_STATE_RTR:
1621 return IB_QPS_RTR;
1622 case QED_ROCE_QP_STATE_RTS:
1623 return IB_QPS_RTS;
1624 case QED_ROCE_QP_STATE_SQD:
1625 return IB_QPS_SQD;
1626 case QED_ROCE_QP_STATE_ERR:
1627 return IB_QPS_ERR;
1628 case QED_ROCE_QP_STATE_SQE:
1629 return IB_QPS_SQE;
1630 }
1631 return IB_QPS_ERR;
1632}
1633
1634static enum qed_roce_qp_state qedr_get_state_from_ibqp(
1635 enum ib_qp_state qp_state)
1636{
1637 switch (qp_state) {
1638 case IB_QPS_RESET:
1639 return QED_ROCE_QP_STATE_RESET;
1640 case IB_QPS_INIT:
1641 return QED_ROCE_QP_STATE_INIT;
1642 case IB_QPS_RTR:
1643 return QED_ROCE_QP_STATE_RTR;
1644 case IB_QPS_RTS:
1645 return QED_ROCE_QP_STATE_RTS;
1646 case IB_QPS_SQD:
1647 return QED_ROCE_QP_STATE_SQD;
1648 case IB_QPS_ERR:
1649 return QED_ROCE_QP_STATE_ERR;
1650 default:
1651 return QED_ROCE_QP_STATE_ERR;
1652 }
1653}
1654
1655static void qedr_reset_qp_hwq_info(struct qedr_qp_hwq_info *qph)
1656{
1657 qed_chain_reset(&qph->pbl);
1658 qph->prod = 0;
1659 qph->cons = 0;
1660 qph->wqe_cons = 0;
1661 qph->db_data.data.value = cpu_to_le16(0);
1662}
1663
1664static int qedr_update_qp_state(struct qedr_dev *dev,
1665 struct qedr_qp *qp,
1666 enum qed_roce_qp_state new_state)
1667{
1668 int status = 0;
1669
1670 if (new_state == qp->state)
1671 return 0;
1672
1673 switch (qp->state) {
1674 case QED_ROCE_QP_STATE_RESET:
1675 switch (new_state) {
1676 case QED_ROCE_QP_STATE_INIT:
1677 qp->prev_wqe_size = 0;
1678 qedr_reset_qp_hwq_info(&qp->sq);
1679 qedr_reset_qp_hwq_info(&qp->rq);
1680 break;
1681 default:
1682 status = -EINVAL;
1683 break;
1684 };
1685 break;
1686 case QED_ROCE_QP_STATE_INIT:
1687 switch (new_state) {
1688 case QED_ROCE_QP_STATE_RTR:
1689
1690
1691
1692 wmb();
1693 writel(qp->rq.db_data.raw, qp->rq.db);
1694
1695 mmiowb();
1696 break;
1697 case QED_ROCE_QP_STATE_ERR:
1698 break;
1699 default:
1700
1701 status = -EINVAL;
1702 break;
1703 };
1704 break;
1705 case QED_ROCE_QP_STATE_RTR:
1706
1707 switch (new_state) {
1708 case QED_ROCE_QP_STATE_RTS:
1709 break;
1710 case QED_ROCE_QP_STATE_ERR:
1711 break;
1712 default:
1713
1714 status = -EINVAL;
1715 break;
1716 };
1717 break;
1718 case QED_ROCE_QP_STATE_RTS:
1719
1720 switch (new_state) {
1721 case QED_ROCE_QP_STATE_SQD:
1722 break;
1723 case QED_ROCE_QP_STATE_ERR:
1724 break;
1725 default:
1726
1727 status = -EINVAL;
1728 break;
1729 };
1730 break;
1731 case QED_ROCE_QP_STATE_SQD:
1732
1733 switch (new_state) {
1734 case QED_ROCE_QP_STATE_RTS:
1735 case QED_ROCE_QP_STATE_ERR:
1736 break;
1737 default:
1738
1739 status = -EINVAL;
1740 break;
1741 };
1742 break;
1743 case QED_ROCE_QP_STATE_ERR:
1744
1745 switch (new_state) {
1746 case QED_ROCE_QP_STATE_RESET:
1747 if ((qp->rq.prod != qp->rq.cons) ||
1748 (qp->sq.prod != qp->sq.cons)) {
1749 DP_NOTICE(dev,
1750 "Error->Reset with rq/sq not empty rq.prod=%x rq.cons=%x sq.prod=%x sq.cons=%x\n",
1751 qp->rq.prod, qp->rq.cons, qp->sq.prod,
1752 qp->sq.cons);
1753 status = -EINVAL;
1754 }
1755 break;
1756 default:
1757 status = -EINVAL;
1758 break;
1759 };
1760 break;
1761 default:
1762 status = -EINVAL;
1763 break;
1764 };
1765
1766 return status;
1767}
1768
1769int qedr_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1770 int attr_mask, struct ib_udata *udata)
1771{
1772 struct qedr_qp *qp = get_qedr_qp(ibqp);
1773 struct qed_rdma_modify_qp_in_params qp_params = { 0 };
1774 struct qedr_dev *dev = get_qedr_dev(&qp->dev->ibdev);
1775 enum ib_qp_state old_qp_state, new_qp_state;
1776 int rc = 0;
1777
1778 DP_DEBUG(dev, QEDR_MSG_QP,
1779 "modify qp: qp %p attr_mask=0x%x, state=%d", qp, attr_mask,
1780 attr->qp_state);
1781
1782 old_qp_state = qedr_get_ibqp_state(qp->state);
1783 if (attr_mask & IB_QP_STATE)
1784 new_qp_state = attr->qp_state;
1785 else
1786 new_qp_state = old_qp_state;
1787
1788 if (!ib_modify_qp_is_ok
1789 (old_qp_state, new_qp_state, ibqp->qp_type, attr_mask,
1790 IB_LINK_LAYER_ETHERNET)) {
1791 DP_ERR(dev,
1792 "modify qp: invalid attribute mask=0x%x specified for\n"
1793 "qpn=0x%x of type=0x%x old_qp_state=0x%x, new_qp_state=0x%x\n",
1794 attr_mask, qp->qp_id, ibqp->qp_type, old_qp_state,
1795 new_qp_state);
1796 rc = -EINVAL;
1797 goto err;
1798 }
1799
1800
1801 if (attr_mask & IB_QP_STATE) {
1802 SET_FIELD(qp_params.modify_flags,
1803 QED_RDMA_MODIFY_QP_VALID_NEW_STATE, 1);
1804 qp_params.new_state = qedr_get_state_from_ibqp(attr->qp_state);
1805 }
1806
1807 if (attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
1808 qp_params.sqd_async = true;
1809
1810 if (attr_mask & IB_QP_PKEY_INDEX) {
1811 SET_FIELD(qp_params.modify_flags,
1812 QED_ROCE_MODIFY_QP_VALID_PKEY, 1);
1813 if (attr->pkey_index >= QEDR_ROCE_PKEY_TABLE_LEN) {
1814 rc = -EINVAL;
1815 goto err;
1816 }
1817
1818 qp_params.pkey = QEDR_ROCE_PKEY_DEFAULT;
1819 }
1820
1821 if (attr_mask & IB_QP_QKEY)
1822 qp->qkey = attr->qkey;
1823
1824 if (attr_mask & IB_QP_ACCESS_FLAGS) {
1825 SET_FIELD(qp_params.modify_flags,
1826 QED_RDMA_MODIFY_QP_VALID_RDMA_OPS_EN, 1);
1827 qp_params.incoming_rdma_read_en = attr->qp_access_flags &
1828 IB_ACCESS_REMOTE_READ;
1829 qp_params.incoming_rdma_write_en = attr->qp_access_flags &
1830 IB_ACCESS_REMOTE_WRITE;
1831 qp_params.incoming_atomic_en = attr->qp_access_flags &
1832 IB_ACCESS_REMOTE_ATOMIC;
1833 }
1834
1835 if (attr_mask & (IB_QP_AV | IB_QP_PATH_MTU)) {
1836 if (attr_mask & IB_QP_PATH_MTU) {
1837 if (attr->path_mtu < IB_MTU_256 ||
1838 attr->path_mtu > IB_MTU_4096) {
1839 pr_err("error: Only MTU sizes of 256, 512, 1024, 2048 and 4096 are supported by RoCE\n");
1840 rc = -EINVAL;
1841 goto err;
1842 }
1843 qp->mtu = min(ib_mtu_enum_to_int(attr->path_mtu),
1844 ib_mtu_enum_to_int(iboe_get_mtu
1845 (dev->ndev->mtu)));
1846 }
1847
1848 if (!qp->mtu) {
1849 qp->mtu =
1850 ib_mtu_enum_to_int(iboe_get_mtu(dev->ndev->mtu));
1851 pr_err("Fixing zeroed MTU to qp->mtu = %d\n", qp->mtu);
1852 }
1853
1854 SET_FIELD(qp_params.modify_flags,
1855 QED_ROCE_MODIFY_QP_VALID_ADDRESS_VECTOR, 1);
1856
1857 qp_params.traffic_class_tos = attr->ah_attr.grh.traffic_class;
1858 qp_params.flow_label = attr->ah_attr.grh.flow_label;
1859 qp_params.hop_limit_ttl = attr->ah_attr.grh.hop_limit;
1860
1861 qp->sgid_idx = attr->ah_attr.grh.sgid_index;
1862
1863 rc = get_gid_info_from_table(ibqp, attr, attr_mask, &qp_params);
1864 if (rc) {
1865 DP_ERR(dev,
1866 "modify qp: problems with GID index %d (rc=%d)\n",
1867 attr->ah_attr.grh.sgid_index, rc);
1868 return rc;
1869 }
1870
1871 rc = qedr_get_dmac(dev, &attr->ah_attr,
1872 qp_params.remote_mac_addr);
1873 if (rc)
1874 return rc;
1875
1876 qp_params.use_local_mac = true;
1877 ether_addr_copy(qp_params.local_mac_addr, dev->ndev->dev_addr);
1878
1879 DP_DEBUG(dev, QEDR_MSG_QP, "dgid=%x:%x:%x:%x\n",
1880 qp_params.dgid.dwords[0], qp_params.dgid.dwords[1],
1881 qp_params.dgid.dwords[2], qp_params.dgid.dwords[3]);
1882 DP_DEBUG(dev, QEDR_MSG_QP, "sgid=%x:%x:%x:%x\n",
1883 qp_params.sgid.dwords[0], qp_params.sgid.dwords[1],
1884 qp_params.sgid.dwords[2], qp_params.sgid.dwords[3]);
1885 DP_DEBUG(dev, QEDR_MSG_QP, "remote_mac=[%pM]\n",
1886 qp_params.remote_mac_addr);
1887
1888 qp_params.mtu = qp->mtu;
1889 qp_params.lb_indication = false;
1890 }
1891
1892 if (!qp_params.mtu) {
1893
1894 if (qp->mtu)
1895 qp_params.mtu = qp->mtu;
1896 else
1897 qp_params.mtu =
1898 ib_mtu_enum_to_int(iboe_get_mtu(dev->ndev->mtu));
1899 }
1900
1901 if (attr_mask & IB_QP_TIMEOUT) {
1902 SET_FIELD(qp_params.modify_flags,
1903 QED_ROCE_MODIFY_QP_VALID_ACK_TIMEOUT, 1);
1904
1905 qp_params.ack_timeout = attr->timeout;
1906 if (attr->timeout) {
1907 u32 temp;
1908
1909 temp = 4096 * (1UL << attr->timeout) / 1000 / 1000;
1910
1911 qp_params.ack_timeout = temp;
1912 } else {
1913
1914 qp_params.ack_timeout = 0;
1915 }
1916 }
1917 if (attr_mask & IB_QP_RETRY_CNT) {
1918 SET_FIELD(qp_params.modify_flags,
1919 QED_ROCE_MODIFY_QP_VALID_RETRY_CNT, 1);
1920 qp_params.retry_cnt = attr->retry_cnt;
1921 }
1922
1923 if (attr_mask & IB_QP_RNR_RETRY) {
1924 SET_FIELD(qp_params.modify_flags,
1925 QED_ROCE_MODIFY_QP_VALID_RNR_RETRY_CNT, 1);
1926 qp_params.rnr_retry_cnt = attr->rnr_retry;
1927 }
1928
1929 if (attr_mask & IB_QP_RQ_PSN) {
1930 SET_FIELD(qp_params.modify_flags,
1931 QED_ROCE_MODIFY_QP_VALID_RQ_PSN, 1);
1932 qp_params.rq_psn = attr->rq_psn;
1933 qp->rq_psn = attr->rq_psn;
1934 }
1935
1936 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
1937 if (attr->max_rd_atomic > dev->attr.max_qp_req_rd_atomic_resc) {
1938 rc = -EINVAL;
1939 DP_ERR(dev,
1940 "unsupported max_rd_atomic=%d, supported=%d\n",
1941 attr->max_rd_atomic,
1942 dev->attr.max_qp_req_rd_atomic_resc);
1943 goto err;
1944 }
1945
1946 SET_FIELD(qp_params.modify_flags,
1947 QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_REQ, 1);
1948 qp_params.max_rd_atomic_req = attr->max_rd_atomic;
1949 }
1950
1951 if (attr_mask & IB_QP_MIN_RNR_TIMER) {
1952 SET_FIELD(qp_params.modify_flags,
1953 QED_ROCE_MODIFY_QP_VALID_MIN_RNR_NAK_TIMER, 1);
1954 qp_params.min_rnr_nak_timer = attr->min_rnr_timer;
1955 }
1956
1957 if (attr_mask & IB_QP_SQ_PSN) {
1958 SET_FIELD(qp_params.modify_flags,
1959 QED_ROCE_MODIFY_QP_VALID_SQ_PSN, 1);
1960 qp_params.sq_psn = attr->sq_psn;
1961 qp->sq_psn = attr->sq_psn;
1962 }
1963
1964 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
1965 if (attr->max_dest_rd_atomic >
1966 dev->attr.max_qp_resp_rd_atomic_resc) {
1967 DP_ERR(dev,
1968 "unsupported max_dest_rd_atomic=%d, supported=%d\n",
1969 attr->max_dest_rd_atomic,
1970 dev->attr.max_qp_resp_rd_atomic_resc);
1971
1972 rc = -EINVAL;
1973 goto err;
1974 }
1975
1976 SET_FIELD(qp_params.modify_flags,
1977 QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_RESP, 1);
1978 qp_params.max_rd_atomic_resp = attr->max_dest_rd_atomic;
1979 }
1980
1981 if (attr_mask & IB_QP_DEST_QPN) {
1982 SET_FIELD(qp_params.modify_flags,
1983 QED_ROCE_MODIFY_QP_VALID_DEST_QP, 1);
1984
1985 qp_params.dest_qp = attr->dest_qp_num;
1986 qp->dest_qp_num = attr->dest_qp_num;
1987 }
1988
1989 if (qp->qp_type != IB_QPT_GSI)
1990 rc = dev->ops->rdma_modify_qp(dev->rdma_ctx,
1991 qp->qed_qp, &qp_params);
1992
1993 if (attr_mask & IB_QP_STATE) {
1994 if ((qp->qp_type != IB_QPT_GSI) && (!udata))
1995 rc = qedr_update_qp_state(dev, qp, qp_params.new_state);
1996 qp->state = qp_params.new_state;
1997 }
1998
1999err:
2000 return rc;
2001}
2002
2003static int qedr_to_ib_qp_acc_flags(struct qed_rdma_query_qp_out_params *params)
2004{
2005 int ib_qp_acc_flags = 0;
2006
2007 if (params->incoming_rdma_write_en)
2008 ib_qp_acc_flags |= IB_ACCESS_REMOTE_WRITE;
2009 if (params->incoming_rdma_read_en)
2010 ib_qp_acc_flags |= IB_ACCESS_REMOTE_READ;
2011 if (params->incoming_atomic_en)
2012 ib_qp_acc_flags |= IB_ACCESS_REMOTE_ATOMIC;
2013 ib_qp_acc_flags |= IB_ACCESS_LOCAL_WRITE;
2014 return ib_qp_acc_flags;
2015}
2016
2017int qedr_query_qp(struct ib_qp *ibqp,
2018 struct ib_qp_attr *qp_attr,
2019 int attr_mask, struct ib_qp_init_attr *qp_init_attr)
2020{
2021 struct qed_rdma_query_qp_out_params params;
2022 struct qedr_qp *qp = get_qedr_qp(ibqp);
2023 struct qedr_dev *dev = qp->dev;
2024 int rc = 0;
2025
2026 memset(¶ms, 0, sizeof(params));
2027
2028 rc = dev->ops->rdma_query_qp(dev->rdma_ctx, qp->qed_qp, ¶ms);
2029 if (rc)
2030 goto err;
2031
2032 memset(qp_attr, 0, sizeof(*qp_attr));
2033 memset(qp_init_attr, 0, sizeof(*qp_init_attr));
2034
2035 qp_attr->qp_state = qedr_get_ibqp_state(params.state);
2036 qp_attr->cur_qp_state = qedr_get_ibqp_state(params.state);
2037 qp_attr->path_mtu = ib_mtu_int_to_enum(params.mtu);
2038 qp_attr->path_mig_state = IB_MIG_MIGRATED;
2039 qp_attr->rq_psn = params.rq_psn;
2040 qp_attr->sq_psn = params.sq_psn;
2041 qp_attr->dest_qp_num = params.dest_qp;
2042
2043 qp_attr->qp_access_flags = qedr_to_ib_qp_acc_flags(¶ms);
2044
2045 qp_attr->cap.max_send_wr = qp->sq.max_wr;
2046 qp_attr->cap.max_recv_wr = qp->rq.max_wr;
2047 qp_attr->cap.max_send_sge = qp->sq.max_sges;
2048 qp_attr->cap.max_recv_sge = qp->rq.max_sges;
2049 qp_attr->cap.max_inline_data = ROCE_REQ_MAX_INLINE_DATA_SIZE;
2050 qp_init_attr->cap = qp_attr->cap;
2051
2052 memcpy(&qp_attr->ah_attr.grh.dgid.raw[0], ¶ms.dgid.bytes[0],
2053 sizeof(qp_attr->ah_attr.grh.dgid.raw));
2054
2055 qp_attr->ah_attr.grh.flow_label = params.flow_label;
2056 qp_attr->ah_attr.grh.sgid_index = qp->sgid_idx;
2057 qp_attr->ah_attr.grh.hop_limit = params.hop_limit_ttl;
2058 qp_attr->ah_attr.grh.traffic_class = params.traffic_class_tos;
2059
2060 qp_attr->ah_attr.ah_flags = IB_AH_GRH;
2061 qp_attr->ah_attr.port_num = 1;
2062 qp_attr->ah_attr.sl = 0;
2063 qp_attr->timeout = params.timeout;
2064 qp_attr->rnr_retry = params.rnr_retry;
2065 qp_attr->retry_cnt = params.retry_cnt;
2066 qp_attr->min_rnr_timer = params.min_rnr_nak_timer;
2067 qp_attr->pkey_index = params.pkey_index;
2068 qp_attr->port_num = 1;
2069 qp_attr->ah_attr.src_path_bits = 0;
2070 qp_attr->ah_attr.static_rate = 0;
2071 qp_attr->alt_pkey_index = 0;
2072 qp_attr->alt_port_num = 0;
2073 qp_attr->alt_timeout = 0;
2074 memset(&qp_attr->alt_ah_attr, 0, sizeof(qp_attr->alt_ah_attr));
2075
2076 qp_attr->sq_draining = (params.state == QED_ROCE_QP_STATE_SQD) ? 1 : 0;
2077 qp_attr->max_dest_rd_atomic = params.max_dest_rd_atomic;
2078 qp_attr->max_rd_atomic = params.max_rd_atomic;
2079 qp_attr->en_sqd_async_notify = (params.sqd_async) ? 1 : 0;
2080
2081 DP_DEBUG(dev, QEDR_MSG_QP, "QEDR_QUERY_QP: max_inline_data=%d\n",
2082 qp_attr->cap.max_inline_data);
2083
2084err:
2085 return rc;
2086}
2087
2088int qedr_destroy_qp(struct ib_qp *ibqp)
2089{
2090 struct qedr_qp *qp = get_qedr_qp(ibqp);
2091 struct qedr_dev *dev = qp->dev;
2092 struct ib_qp_attr attr;
2093 int attr_mask = 0;
2094 int rc = 0;
2095
2096 DP_DEBUG(dev, QEDR_MSG_QP, "destroy qp: destroying %p, qp type=%d\n",
2097 qp, qp->qp_type);
2098
2099 if ((qp->state != QED_ROCE_QP_STATE_RESET) &&
2100 (qp->state != QED_ROCE_QP_STATE_ERR) &&
2101 (qp->state != QED_ROCE_QP_STATE_INIT)) {
2102
2103 attr.qp_state = IB_QPS_ERR;
2104 attr_mask |= IB_QP_STATE;
2105
2106
2107 qedr_modify_qp(ibqp, &attr, attr_mask, NULL);
2108 }
2109
2110 if (qp->qp_type != IB_QPT_GSI) {
2111 rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);
2112 if (rc)
2113 return rc;
2114 } else {
2115 qedr_destroy_gsi_qp(dev);
2116 }
2117
2118 if (ibqp->uobject && ibqp->uobject->context) {
2119 qedr_cleanup_user_sq(dev, qp);
2120 qedr_cleanup_user_rq(dev, qp);
2121 } else {
2122 qedr_cleanup_kernel_sq(dev, qp);
2123 qedr_cleanup_kernel_rq(dev, qp);
2124 }
2125
2126 kfree(qp);
2127
2128 return rc;
2129}
2130
2131struct ib_ah *qedr_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr,
2132 struct ib_udata *udata)
2133{
2134 struct qedr_ah *ah;
2135
2136 ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
2137 if (!ah)
2138 return ERR_PTR(-ENOMEM);
2139
2140 ah->attr = *attr;
2141
2142 return &ah->ibah;
2143}
2144
2145int qedr_destroy_ah(struct ib_ah *ibah)
2146{
2147 struct qedr_ah *ah = get_qedr_ah(ibah);
2148
2149 kfree(ah);
2150 return 0;
2151}
2152
2153static void free_mr_info(struct qedr_dev *dev, struct mr_info *info)
2154{
2155 struct qedr_pbl *pbl, *tmp;
2156
2157 if (info->pbl_table)
2158 list_add_tail(&info->pbl_table->list_entry,
2159 &info->free_pbl_list);
2160
2161 if (!list_empty(&info->inuse_pbl_list))
2162 list_splice(&info->inuse_pbl_list, &info->free_pbl_list);
2163
2164 list_for_each_entry_safe(pbl, tmp, &info->free_pbl_list, list_entry) {
2165 list_del(&pbl->list_entry);
2166 qedr_free_pbl(dev, &info->pbl_info, pbl);
2167 }
2168}
2169
2170static int init_mr_info(struct qedr_dev *dev, struct mr_info *info,
2171 size_t page_list_len, bool two_layered)
2172{
2173 struct qedr_pbl *tmp;
2174 int rc;
2175
2176 INIT_LIST_HEAD(&info->free_pbl_list);
2177 INIT_LIST_HEAD(&info->inuse_pbl_list);
2178
2179 rc = qedr_prepare_pbl_tbl(dev, &info->pbl_info,
2180 page_list_len, two_layered);
2181 if (rc)
2182 goto done;
2183
2184 info->pbl_table = qedr_alloc_pbl_tbl(dev, &info->pbl_info, GFP_KERNEL);
2185 if (!info->pbl_table) {
2186 rc = -ENOMEM;
2187 goto done;
2188 }
2189
2190 DP_DEBUG(dev, QEDR_MSG_MR, "pbl_table_pa = %pa\n",
2191 &info->pbl_table->pa);
2192
2193
2194
2195
2196 tmp = qedr_alloc_pbl_tbl(dev, &info->pbl_info, GFP_KERNEL);
2197 if (!tmp) {
2198 DP_DEBUG(dev, QEDR_MSG_MR, "Extra PBL is not allocated\n");
2199 goto done;
2200 }
2201
2202 list_add_tail(&tmp->list_entry, &info->free_pbl_list);
2203
2204 DP_DEBUG(dev, QEDR_MSG_MR, "extra pbl_table_pa = %pa\n", &tmp->pa);
2205
2206done:
2207 if (rc)
2208 free_mr_info(dev, info);
2209
2210 return rc;
2211}
2212
2213struct ib_mr *qedr_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len,
2214 u64 usr_addr, int acc, struct ib_udata *udata)
2215{
2216 struct qedr_dev *dev = get_qedr_dev(ibpd->device);
2217 struct qedr_mr *mr;
2218 struct qedr_pd *pd;
2219 int rc = -ENOMEM;
2220
2221 pd = get_qedr_pd(ibpd);
2222 DP_DEBUG(dev, QEDR_MSG_MR,
2223 "qedr_register user mr pd = %d start = %lld, len = %lld, usr_addr = %lld, acc = %d\n",
2224 pd->pd_id, start, len, usr_addr, acc);
2225
2226 if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE))
2227 return ERR_PTR(-EINVAL);
2228
2229 mr = kzalloc(sizeof(*mr), GFP_KERNEL);
2230 if (!mr)
2231 return ERR_PTR(rc);
2232
2233 mr->type = QEDR_MR_USER;
2234
2235 mr->umem = ib_umem_get(ibpd->uobject->context, start, len, acc, 0);
2236 if (IS_ERR(mr->umem)) {
2237 rc = -EFAULT;
2238 goto err0;
2239 }
2240
2241 rc = init_mr_info(dev, &mr->info, ib_umem_page_count(mr->umem), 1);
2242 if (rc)
2243 goto err1;
2244
2245 qedr_populate_pbls(dev, mr->umem, mr->info.pbl_table,
2246 &mr->info.pbl_info);
2247
2248 rc = dev->ops->rdma_alloc_tid(dev->rdma_ctx, &mr->hw_mr.itid);
2249 if (rc) {
2250 DP_ERR(dev, "roce alloc tid returned an error %d\n", rc);
2251 goto err1;
2252 }
2253
2254
2255 mr->hw_mr.tid_type = QED_RDMA_TID_REGISTERED_MR;
2256 mr->hw_mr.key = 0;
2257 mr->hw_mr.pd = pd->pd_id;
2258 mr->hw_mr.local_read = 1;
2259 mr->hw_mr.local_write = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0;
2260 mr->hw_mr.remote_read = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0;
2261 mr->hw_mr.remote_write = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
2262 mr->hw_mr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0;
2263 mr->hw_mr.mw_bind = false;
2264 mr->hw_mr.pbl_ptr = mr->info.pbl_table[0].pa;
2265 mr->hw_mr.pbl_two_level = mr->info.pbl_info.two_layered;
2266 mr->hw_mr.pbl_page_size_log = ilog2(mr->info.pbl_info.pbl_size);
2267 mr->hw_mr.page_size_log = ilog2(mr->umem->page_size);
2268 mr->hw_mr.fbo = ib_umem_offset(mr->umem);
2269 mr->hw_mr.length = len;
2270 mr->hw_mr.vaddr = usr_addr;
2271 mr->hw_mr.zbva = false;
2272 mr->hw_mr.phy_mr = false;
2273 mr->hw_mr.dma_mr = false;
2274
2275 rc = dev->ops->rdma_register_tid(dev->rdma_ctx, &mr->hw_mr);
2276 if (rc) {
2277 DP_ERR(dev, "roce register tid returned an error %d\n", rc);
2278 goto err2;
2279 }
2280
2281 mr->ibmr.lkey = mr->hw_mr.itid << 8 | mr->hw_mr.key;
2282 if (mr->hw_mr.remote_write || mr->hw_mr.remote_read ||
2283 mr->hw_mr.remote_atomic)
2284 mr->ibmr.rkey = mr->hw_mr.itid << 8 | mr->hw_mr.key;
2285
2286 DP_DEBUG(dev, QEDR_MSG_MR, "register user mr lkey: %x\n",
2287 mr->ibmr.lkey);
2288 return &mr->ibmr;
2289
2290err2:
2291 dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid);
2292err1:
2293 qedr_free_pbl(dev, &mr->info.pbl_info, mr->info.pbl_table);
2294err0:
2295 kfree(mr);
2296 return ERR_PTR(rc);
2297}
2298
2299int qedr_dereg_mr(struct ib_mr *ib_mr)
2300{
2301 struct qedr_mr *mr = get_qedr_mr(ib_mr);
2302 struct qedr_dev *dev = get_qedr_dev(ib_mr->device);
2303 int rc = 0;
2304
2305 rc = dev->ops->rdma_deregister_tid(dev->rdma_ctx, mr->hw_mr.itid);
2306 if (rc)
2307 return rc;
2308
2309 dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid);
2310
2311 if ((mr->type != QEDR_MR_DMA) && (mr->type != QEDR_MR_FRMR))
2312 qedr_free_pbl(dev, &mr->info.pbl_info, mr->info.pbl_table);
2313
2314
2315 if (mr->umem)
2316 ib_umem_release(mr->umem);
2317
2318 kfree(mr);
2319
2320 return rc;
2321}
2322
2323static struct qedr_mr *__qedr_alloc_mr(struct ib_pd *ibpd,
2324 int max_page_list_len)
2325{
2326 struct qedr_pd *pd = get_qedr_pd(ibpd);
2327 struct qedr_dev *dev = get_qedr_dev(ibpd->device);
2328 struct qedr_mr *mr;
2329 int rc = -ENOMEM;
2330
2331 DP_DEBUG(dev, QEDR_MSG_MR,
2332 "qedr_alloc_frmr pd = %d max_page_list_len= %d\n", pd->pd_id,
2333 max_page_list_len);
2334
2335 mr = kzalloc(sizeof(*mr), GFP_KERNEL);
2336 if (!mr)
2337 return ERR_PTR(rc);
2338
2339 mr->dev = dev;
2340 mr->type = QEDR_MR_FRMR;
2341
2342 rc = init_mr_info(dev, &mr->info, max_page_list_len, 1);
2343 if (rc)
2344 goto err0;
2345
2346 rc = dev->ops->rdma_alloc_tid(dev->rdma_ctx, &mr->hw_mr.itid);
2347 if (rc) {
2348 DP_ERR(dev, "roce alloc tid returned an error %d\n", rc);
2349 goto err0;
2350 }
2351
2352
2353 mr->hw_mr.tid_type = QED_RDMA_TID_FMR;
2354 mr->hw_mr.key = 0;
2355 mr->hw_mr.pd = pd->pd_id;
2356 mr->hw_mr.local_read = 1;
2357 mr->hw_mr.local_write = 0;
2358 mr->hw_mr.remote_read = 0;
2359 mr->hw_mr.remote_write = 0;
2360 mr->hw_mr.remote_atomic = 0;
2361 mr->hw_mr.mw_bind = false;
2362 mr->hw_mr.pbl_ptr = 0;
2363 mr->hw_mr.pbl_two_level = mr->info.pbl_info.two_layered;
2364 mr->hw_mr.pbl_page_size_log = ilog2(mr->info.pbl_info.pbl_size);
2365 mr->hw_mr.fbo = 0;
2366 mr->hw_mr.length = 0;
2367 mr->hw_mr.vaddr = 0;
2368 mr->hw_mr.zbva = false;
2369 mr->hw_mr.phy_mr = true;
2370 mr->hw_mr.dma_mr = false;
2371
2372 rc = dev->ops->rdma_register_tid(dev->rdma_ctx, &mr->hw_mr);
2373 if (rc) {
2374 DP_ERR(dev, "roce register tid returned an error %d\n", rc);
2375 goto err1;
2376 }
2377
2378 mr->ibmr.lkey = mr->hw_mr.itid << 8 | mr->hw_mr.key;
2379 mr->ibmr.rkey = mr->ibmr.lkey;
2380
2381 DP_DEBUG(dev, QEDR_MSG_MR, "alloc frmr: %x\n", mr->ibmr.lkey);
2382 return mr;
2383
2384err1:
2385 dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid);
2386err0:
2387 kfree(mr);
2388 return ERR_PTR(rc);
2389}
2390
2391struct ib_mr *qedr_alloc_mr(struct ib_pd *ibpd,
2392 enum ib_mr_type mr_type, u32 max_num_sg)
2393{
2394 struct qedr_dev *dev;
2395 struct qedr_mr *mr;
2396
2397 if (mr_type != IB_MR_TYPE_MEM_REG)
2398 return ERR_PTR(-EINVAL);
2399
2400 mr = __qedr_alloc_mr(ibpd, max_num_sg);
2401
2402 if (IS_ERR(mr))
2403 return ERR_PTR(-EINVAL);
2404
2405 dev = mr->dev;
2406
2407 return &mr->ibmr;
2408}
2409
2410static int qedr_set_page(struct ib_mr *ibmr, u64 addr)
2411{
2412 struct qedr_mr *mr = get_qedr_mr(ibmr);
2413 struct qedr_pbl *pbl_table;
2414 struct regpair *pbe;
2415 u32 pbes_in_page;
2416
2417 if (unlikely(mr->npages == mr->info.pbl_info.num_pbes)) {
2418 DP_ERR(mr->dev, "qedr_set_page failes when %d\n", mr->npages);
2419 return -ENOMEM;
2420 }
2421
2422 DP_DEBUG(mr->dev, QEDR_MSG_MR, "qedr_set_page pages[%d] = 0x%llx\n",
2423 mr->npages, addr);
2424
2425 pbes_in_page = mr->info.pbl_info.pbl_size / sizeof(u64);
2426 pbl_table = mr->info.pbl_table + (mr->npages / pbes_in_page);
2427 pbe = (struct regpair *)pbl_table->va;
2428 pbe += mr->npages % pbes_in_page;
2429 pbe->lo = cpu_to_le32((u32)addr);
2430 pbe->hi = cpu_to_le32((u32)upper_32_bits(addr));
2431
2432 mr->npages++;
2433
2434 return 0;
2435}
2436
2437static void handle_completed_mrs(struct qedr_dev *dev, struct mr_info *info)
2438{
2439 int work = info->completed - info->completed_handled - 1;
2440
2441 DP_DEBUG(dev, QEDR_MSG_MR, "Special FMR work = %d\n", work);
2442 while (work-- > 0 && !list_empty(&info->inuse_pbl_list)) {
2443 struct qedr_pbl *pbl;
2444
2445
2446
2447
2448
2449
2450 pbl = list_first_entry(&info->inuse_pbl_list,
2451 struct qedr_pbl, list_entry);
2452 list_move_tail(&pbl->list_entry, &info->free_pbl_list);
2453 info->completed_handled++;
2454 }
2455}
2456
2457int qedr_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
2458 int sg_nents, unsigned int *sg_offset)
2459{
2460 struct qedr_mr *mr = get_qedr_mr(ibmr);
2461
2462 mr->npages = 0;
2463
2464 handle_completed_mrs(mr->dev, &mr->info);
2465 return ib_sg_to_pages(ibmr, sg, sg_nents, NULL, qedr_set_page);
2466}
2467
2468struct ib_mr *qedr_get_dma_mr(struct ib_pd *ibpd, int acc)
2469{
2470 struct qedr_dev *dev = get_qedr_dev(ibpd->device);
2471 struct qedr_pd *pd = get_qedr_pd(ibpd);
2472 struct qedr_mr *mr;
2473 int rc;
2474
2475 mr = kzalloc(sizeof(*mr), GFP_KERNEL);
2476 if (!mr)
2477 return ERR_PTR(-ENOMEM);
2478
2479 mr->type = QEDR_MR_DMA;
2480
2481 rc = dev->ops->rdma_alloc_tid(dev->rdma_ctx, &mr->hw_mr.itid);
2482 if (rc) {
2483 DP_ERR(dev, "roce alloc tid returned an error %d\n", rc);
2484 goto err1;
2485 }
2486
2487
2488 mr->hw_mr.tid_type = QED_RDMA_TID_REGISTERED_MR;
2489 mr->hw_mr.pd = pd->pd_id;
2490 mr->hw_mr.local_read = 1;
2491 mr->hw_mr.local_write = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0;
2492 mr->hw_mr.remote_read = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0;
2493 mr->hw_mr.remote_write = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
2494 mr->hw_mr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0;
2495 mr->hw_mr.dma_mr = true;
2496
2497 rc = dev->ops->rdma_register_tid(dev->rdma_ctx, &mr->hw_mr);
2498 if (rc) {
2499 DP_ERR(dev, "roce register tid returned an error %d\n", rc);
2500 goto err2;
2501 }
2502
2503 mr->ibmr.lkey = mr->hw_mr.itid << 8 | mr->hw_mr.key;
2504 if (mr->hw_mr.remote_write || mr->hw_mr.remote_read ||
2505 mr->hw_mr.remote_atomic)
2506 mr->ibmr.rkey = mr->hw_mr.itid << 8 | mr->hw_mr.key;
2507
2508 DP_DEBUG(dev, QEDR_MSG_MR, "get dma mr: lkey = %x\n", mr->ibmr.lkey);
2509 return &mr->ibmr;
2510
2511err2:
2512 dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid);
2513err1:
2514 kfree(mr);
2515 return ERR_PTR(rc);
2516}
2517
2518static inline int qedr_wq_is_full(struct qedr_qp_hwq_info *wq)
2519{
2520 return (((wq->prod + 1) % wq->max_wr) == wq->cons);
2521}
2522
2523static int sge_data_len(struct ib_sge *sg_list, int num_sge)
2524{
2525 int i, len = 0;
2526
2527 for (i = 0; i < num_sge; i++)
2528 len += sg_list[i].length;
2529
2530 return len;
2531}
2532
2533static void swap_wqe_data64(u64 *p)
2534{
2535 int i;
2536
2537 for (i = 0; i < QEDR_SQE_ELEMENT_SIZE / sizeof(u64); i++, p++)
2538 *p = cpu_to_be64(cpu_to_le64(*p));
2539}
2540
2541static u32 qedr_prepare_sq_inline_data(struct qedr_dev *dev,
2542 struct qedr_qp *qp, u8 *wqe_size,
2543 struct ib_send_wr *wr,
2544 struct ib_send_wr **bad_wr, u8 *bits,
2545 u8 bit)
2546{
2547 u32 data_size = sge_data_len(wr->sg_list, wr->num_sge);
2548 char *seg_prt, *wqe;
2549 int i, seg_siz;
2550
2551 if (data_size > ROCE_REQ_MAX_INLINE_DATA_SIZE) {
2552 DP_ERR(dev, "Too much inline data in WR: %d\n", data_size);
2553 *bad_wr = wr;
2554 return 0;
2555 }
2556
2557 if (!data_size)
2558 return data_size;
2559
2560 *bits |= bit;
2561
2562 seg_prt = NULL;
2563 wqe = NULL;
2564 seg_siz = 0;
2565
2566
2567 for (i = 0; i < wr->num_sge; i++) {
2568 u32 len = wr->sg_list[i].length;
2569 void *src = (void *)(uintptr_t)wr->sg_list[i].addr;
2570
2571 while (len > 0) {
2572 u32 cur;
2573
2574
2575 if (!seg_siz) {
2576 wqe = (char *)qed_chain_produce(&qp->sq.pbl);
2577 seg_prt = wqe;
2578 seg_siz = sizeof(struct rdma_sq_common_wqe);
2579 (*wqe_size)++;
2580 }
2581
2582
2583 cur = min_t(u32, len, seg_siz);
2584 memcpy(seg_prt, src, cur);
2585
2586
2587 seg_prt += cur;
2588 seg_siz -= cur;
2589
2590
2591 src += cur;
2592 len -= cur;
2593
2594
2595 if (!seg_siz)
2596 swap_wqe_data64((u64 *)wqe);
2597 }
2598 }
2599
2600
2601 if (seg_siz)
2602 swap_wqe_data64((u64 *)wqe);
2603
2604 return data_size;
2605}
2606
2607#define RQ_SGE_SET(sge, vaddr, vlength, vflags) \
2608 do { \
2609 DMA_REGPAIR_LE(sge->addr, vaddr); \
2610 (sge)->length = cpu_to_le32(vlength); \
2611 (sge)->flags = cpu_to_le32(vflags); \
2612 } while (0)
2613
2614#define SRQ_HDR_SET(hdr, vwr_id, num_sge) \
2615 do { \
2616 DMA_REGPAIR_LE(hdr->wr_id, vwr_id); \
2617 (hdr)->num_sges = num_sge; \
2618 } while (0)
2619
2620#define SRQ_SGE_SET(sge, vaddr, vlength, vlkey) \
2621 do { \
2622 DMA_REGPAIR_LE(sge->addr, vaddr); \
2623 (sge)->length = cpu_to_le32(vlength); \
2624 (sge)->l_key = cpu_to_le32(vlkey); \
2625 } while (0)
2626
2627static u32 qedr_prepare_sq_sges(struct qedr_qp *qp, u8 *wqe_size,
2628 struct ib_send_wr *wr)
2629{
2630 u32 data_size = 0;
2631 int i;
2632
2633 for (i = 0; i < wr->num_sge; i++) {
2634 struct rdma_sq_sge *sge = qed_chain_produce(&qp->sq.pbl);
2635
2636 DMA_REGPAIR_LE(sge->addr, wr->sg_list[i].addr);
2637 sge->l_key = cpu_to_le32(wr->sg_list[i].lkey);
2638 sge->length = cpu_to_le32(wr->sg_list[i].length);
2639 data_size += wr->sg_list[i].length;
2640 }
2641
2642 if (wqe_size)
2643 *wqe_size += wr->num_sge;
2644
2645 return data_size;
2646}
2647
2648static u32 qedr_prepare_sq_rdma_data(struct qedr_dev *dev,
2649 struct qedr_qp *qp,
2650 struct rdma_sq_rdma_wqe_1st *rwqe,
2651 struct rdma_sq_rdma_wqe_2nd *rwqe2,
2652 struct ib_send_wr *wr,
2653 struct ib_send_wr **bad_wr)
2654{
2655 rwqe2->r_key = cpu_to_le32(rdma_wr(wr)->rkey);
2656 DMA_REGPAIR_LE(rwqe2->remote_va, rdma_wr(wr)->remote_addr);
2657
2658 if (wr->send_flags & IB_SEND_INLINE &&
2659 (wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2660 wr->opcode == IB_WR_RDMA_WRITE)) {
2661 u8 flags = 0;
2662
2663 SET_FIELD2(flags, RDMA_SQ_RDMA_WQE_1ST_INLINE_FLG, 1);
2664 return qedr_prepare_sq_inline_data(dev, qp, &rwqe->wqe_size, wr,
2665 bad_wr, &rwqe->flags, flags);
2666 }
2667
2668 return qedr_prepare_sq_sges(qp, &rwqe->wqe_size, wr);
2669}
2670
2671static u32 qedr_prepare_sq_send_data(struct qedr_dev *dev,
2672 struct qedr_qp *qp,
2673 struct rdma_sq_send_wqe_1st *swqe,
2674 struct rdma_sq_send_wqe_2st *swqe2,
2675 struct ib_send_wr *wr,
2676 struct ib_send_wr **bad_wr)
2677{
2678 memset(swqe2, 0, sizeof(*swqe2));
2679 if (wr->send_flags & IB_SEND_INLINE) {
2680 u8 flags = 0;
2681
2682 SET_FIELD2(flags, RDMA_SQ_SEND_WQE_INLINE_FLG, 1);
2683 return qedr_prepare_sq_inline_data(dev, qp, &swqe->wqe_size, wr,
2684 bad_wr, &swqe->flags, flags);
2685 }
2686
2687 return qedr_prepare_sq_sges(qp, &swqe->wqe_size, wr);
2688}
2689
2690static int qedr_prepare_reg(struct qedr_qp *qp,
2691 struct rdma_sq_fmr_wqe_1st *fwqe1,
2692 struct ib_reg_wr *wr)
2693{
2694 struct qedr_mr *mr = get_qedr_mr(wr->mr);
2695 struct rdma_sq_fmr_wqe_2nd *fwqe2;
2696
2697 fwqe2 = (struct rdma_sq_fmr_wqe_2nd *)qed_chain_produce(&qp->sq.pbl);
2698 fwqe1->addr.hi = upper_32_bits(mr->ibmr.iova);
2699 fwqe1->addr.lo = lower_32_bits(mr->ibmr.iova);
2700 fwqe1->l_key = wr->key;
2701
2702 SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_REMOTE_READ,
2703 !!(wr->access & IB_ACCESS_REMOTE_READ));
2704 SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_REMOTE_WRITE,
2705 !!(wr->access & IB_ACCESS_REMOTE_WRITE));
2706 SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_ENABLE_ATOMIC,
2707 !!(wr->access & IB_ACCESS_REMOTE_ATOMIC));
2708 SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_LOCAL_READ, 1);
2709 SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_LOCAL_WRITE,
2710 !!(wr->access & IB_ACCESS_LOCAL_WRITE));
2711 fwqe2->fmr_ctrl = 0;
2712
2713 SET_FIELD2(fwqe2->fmr_ctrl, RDMA_SQ_FMR_WQE_2ND_PAGE_SIZE_LOG,
2714 ilog2(mr->ibmr.page_size) - 12);
2715
2716 fwqe2->length_hi = 0;
2717 fwqe2->length_lo = mr->ibmr.length;
2718 fwqe2->pbl_addr.hi = upper_32_bits(mr->info.pbl_table->pa);
2719 fwqe2->pbl_addr.lo = lower_32_bits(mr->info.pbl_table->pa);
2720
2721 qp->wqe_wr_id[qp->sq.prod].mr = mr;
2722
2723 return 0;
2724}
2725
2726static enum ib_wc_opcode qedr_ib_to_wc_opcode(enum ib_wr_opcode opcode)
2727{
2728 switch (opcode) {
2729 case IB_WR_RDMA_WRITE:
2730 case IB_WR_RDMA_WRITE_WITH_IMM:
2731 return IB_WC_RDMA_WRITE;
2732 case IB_WR_SEND_WITH_IMM:
2733 case IB_WR_SEND:
2734 case IB_WR_SEND_WITH_INV:
2735 return IB_WC_SEND;
2736 case IB_WR_RDMA_READ:
2737 return IB_WC_RDMA_READ;
2738 case IB_WR_ATOMIC_CMP_AND_SWP:
2739 return IB_WC_COMP_SWAP;
2740 case IB_WR_ATOMIC_FETCH_AND_ADD:
2741 return IB_WC_FETCH_ADD;
2742 case IB_WR_REG_MR:
2743 return IB_WC_REG_MR;
2744 case IB_WR_LOCAL_INV:
2745 return IB_WC_LOCAL_INV;
2746 default:
2747 return IB_WC_SEND;
2748 }
2749}
2750
2751static inline bool qedr_can_post_send(struct qedr_qp *qp, struct ib_send_wr *wr)
2752{
2753 int wq_is_full, err_wr, pbl_is_full;
2754 struct qedr_dev *dev = qp->dev;
2755
2756
2757 err_wr = wr->num_sge > qp->sq.max_sges;
2758 wq_is_full = qedr_wq_is_full(&qp->sq);
2759 pbl_is_full = qed_chain_get_elem_left_u32(&qp->sq.pbl) <
2760 QEDR_MAX_SQE_ELEMENTS_PER_SQE;
2761 if (wq_is_full || err_wr || pbl_is_full) {
2762 if (wq_is_full && !(qp->err_bitmap & QEDR_QP_ERR_SQ_FULL)) {
2763 DP_ERR(dev,
2764 "error: WQ is full. Post send on QP %p failed (this error appears only once)\n",
2765 qp);
2766 qp->err_bitmap |= QEDR_QP_ERR_SQ_FULL;
2767 }
2768
2769 if (err_wr && !(qp->err_bitmap & QEDR_QP_ERR_BAD_SR)) {
2770 DP_ERR(dev,
2771 "error: WR is bad. Post send on QP %p failed (this error appears only once)\n",
2772 qp);
2773 qp->err_bitmap |= QEDR_QP_ERR_BAD_SR;
2774 }
2775
2776 if (pbl_is_full &&
2777 !(qp->err_bitmap & QEDR_QP_ERR_SQ_PBL_FULL)) {
2778 DP_ERR(dev,
2779 "error: WQ PBL is full. Post send on QP %p failed (this error appears only once)\n",
2780 qp);
2781 qp->err_bitmap |= QEDR_QP_ERR_SQ_PBL_FULL;
2782 }
2783 return false;
2784 }
2785 return true;
2786}
2787
2788static int __qedr_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
2789 struct ib_send_wr **bad_wr)
2790{
2791 struct qedr_dev *dev = get_qedr_dev(ibqp->device);
2792 struct qedr_qp *qp = get_qedr_qp(ibqp);
2793 struct rdma_sq_atomic_wqe_1st *awqe1;
2794 struct rdma_sq_atomic_wqe_2nd *awqe2;
2795 struct rdma_sq_atomic_wqe_3rd *awqe3;
2796 struct rdma_sq_send_wqe_2st *swqe2;
2797 struct rdma_sq_local_inv_wqe *iwqe;
2798 struct rdma_sq_rdma_wqe_2nd *rwqe2;
2799 struct rdma_sq_send_wqe_1st *swqe;
2800 struct rdma_sq_rdma_wqe_1st *rwqe;
2801 struct rdma_sq_fmr_wqe_1st *fwqe1;
2802 struct rdma_sq_common_wqe *wqe;
2803 u32 length;
2804 int rc = 0;
2805 bool comp;
2806
2807 if (!qedr_can_post_send(qp, wr)) {
2808 *bad_wr = wr;
2809 return -ENOMEM;
2810 }
2811
2812 wqe = qed_chain_produce(&qp->sq.pbl);
2813 qp->wqe_wr_id[qp->sq.prod].signaled =
2814 !!(wr->send_flags & IB_SEND_SIGNALED) || qp->signaled;
2815
2816 wqe->flags = 0;
2817 SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_SE_FLG,
2818 !!(wr->send_flags & IB_SEND_SOLICITED));
2819 comp = (!!(wr->send_flags & IB_SEND_SIGNALED)) || qp->signaled;
2820 SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_COMP_FLG, comp);
2821 SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_RD_FENCE_FLG,
2822 !!(wr->send_flags & IB_SEND_FENCE));
2823 wqe->prev_wqe_size = qp->prev_wqe_size;
2824
2825 qp->wqe_wr_id[qp->sq.prod].opcode = qedr_ib_to_wc_opcode(wr->opcode);
2826
2827 switch (wr->opcode) {
2828 case IB_WR_SEND_WITH_IMM:
2829 wqe->req_type = RDMA_SQ_REQ_TYPE_SEND_WITH_IMM;
2830 swqe = (struct rdma_sq_send_wqe_1st *)wqe;
2831 swqe->wqe_size = 2;
2832 swqe2 = qed_chain_produce(&qp->sq.pbl);
2833
2834 swqe->inv_key_or_imm_data = cpu_to_le32(wr->ex.imm_data);
2835 length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2,
2836 wr, bad_wr);
2837 swqe->length = cpu_to_le32(length);
2838 qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size;
2839 qp->prev_wqe_size = swqe->wqe_size;
2840 qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length;
2841 break;
2842 case IB_WR_SEND:
2843 wqe->req_type = RDMA_SQ_REQ_TYPE_SEND;
2844 swqe = (struct rdma_sq_send_wqe_1st *)wqe;
2845
2846 swqe->wqe_size = 2;
2847 swqe2 = qed_chain_produce(&qp->sq.pbl);
2848 length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2,
2849 wr, bad_wr);
2850 swqe->length = cpu_to_le32(length);
2851 qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size;
2852 qp->prev_wqe_size = swqe->wqe_size;
2853 qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length;
2854 break;
2855 case IB_WR_SEND_WITH_INV:
2856 wqe->req_type = RDMA_SQ_REQ_TYPE_SEND_WITH_INVALIDATE;
2857 swqe = (struct rdma_sq_send_wqe_1st *)wqe;
2858 swqe2 = qed_chain_produce(&qp->sq.pbl);
2859 swqe->wqe_size = 2;
2860 swqe->inv_key_or_imm_data = cpu_to_le32(wr->ex.invalidate_rkey);
2861 length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2,
2862 wr, bad_wr);
2863 swqe->length = cpu_to_le32(length);
2864 qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size;
2865 qp->prev_wqe_size = swqe->wqe_size;
2866 qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length;
2867 break;
2868
2869 case IB_WR_RDMA_WRITE_WITH_IMM:
2870 wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_WR_WITH_IMM;
2871 rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe;
2872
2873 rwqe->wqe_size = 2;
2874 rwqe->imm_data = htonl(cpu_to_le32(wr->ex.imm_data));
2875 rwqe2 = qed_chain_produce(&qp->sq.pbl);
2876 length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2,
2877 wr, bad_wr);
2878 rwqe->length = cpu_to_le32(length);
2879 qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size;
2880 qp->prev_wqe_size = rwqe->wqe_size;
2881 qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length;
2882 break;
2883 case IB_WR_RDMA_WRITE:
2884 wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_WR;
2885 rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe;
2886
2887 rwqe->wqe_size = 2;
2888 rwqe2 = qed_chain_produce(&qp->sq.pbl);
2889 length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2,
2890 wr, bad_wr);
2891 rwqe->length = cpu_to_le32(length);
2892 qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size;
2893 qp->prev_wqe_size = rwqe->wqe_size;
2894 qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length;
2895 break;
2896 case IB_WR_RDMA_READ_WITH_INV:
2897 DP_ERR(dev,
2898 "RDMA READ WITH INVALIDATE not supported\n");
2899 *bad_wr = wr;
2900 rc = -EINVAL;
2901 break;
2902
2903 case IB_WR_RDMA_READ:
2904 wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_RD;
2905 rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe;
2906
2907 rwqe->wqe_size = 2;
2908 rwqe2 = qed_chain_produce(&qp->sq.pbl);
2909 length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2,
2910 wr, bad_wr);
2911 rwqe->length = cpu_to_le32(length);
2912 qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size;
2913 qp->prev_wqe_size = rwqe->wqe_size;
2914 qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length;
2915 break;
2916
2917 case IB_WR_ATOMIC_CMP_AND_SWP:
2918 case IB_WR_ATOMIC_FETCH_AND_ADD:
2919 awqe1 = (struct rdma_sq_atomic_wqe_1st *)wqe;
2920 awqe1->wqe_size = 4;
2921
2922 awqe2 = qed_chain_produce(&qp->sq.pbl);
2923 DMA_REGPAIR_LE(awqe2->remote_va, atomic_wr(wr)->remote_addr);
2924 awqe2->r_key = cpu_to_le32(atomic_wr(wr)->rkey);
2925
2926 awqe3 = qed_chain_produce(&qp->sq.pbl);
2927
2928 if (wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2929 wqe->req_type = RDMA_SQ_REQ_TYPE_ATOMIC_ADD;
2930 DMA_REGPAIR_LE(awqe3->swap_data,
2931 atomic_wr(wr)->compare_add);
2932 } else {
2933 wqe->req_type = RDMA_SQ_REQ_TYPE_ATOMIC_CMP_AND_SWAP;
2934 DMA_REGPAIR_LE(awqe3->swap_data,
2935 atomic_wr(wr)->swap);
2936 DMA_REGPAIR_LE(awqe3->cmp_data,
2937 atomic_wr(wr)->compare_add);
2938 }
2939
2940 qedr_prepare_sq_sges(qp, NULL, wr);
2941
2942 qp->wqe_wr_id[qp->sq.prod].wqe_size = awqe1->wqe_size;
2943 qp->prev_wqe_size = awqe1->wqe_size;
2944 break;
2945
2946 case IB_WR_LOCAL_INV:
2947 iwqe = (struct rdma_sq_local_inv_wqe *)wqe;
2948 iwqe->wqe_size = 1;
2949
2950 iwqe->req_type = RDMA_SQ_REQ_TYPE_LOCAL_INVALIDATE;
2951 iwqe->inv_l_key = wr->ex.invalidate_rkey;
2952 qp->wqe_wr_id[qp->sq.prod].wqe_size = iwqe->wqe_size;
2953 qp->prev_wqe_size = iwqe->wqe_size;
2954 break;
2955 case IB_WR_REG_MR:
2956 DP_DEBUG(dev, QEDR_MSG_CQ, "REG_MR\n");
2957 wqe->req_type = RDMA_SQ_REQ_TYPE_FAST_MR;
2958 fwqe1 = (struct rdma_sq_fmr_wqe_1st *)wqe;
2959 fwqe1->wqe_size = 2;
2960
2961 rc = qedr_prepare_reg(qp, fwqe1, reg_wr(wr));
2962 if (rc) {
2963 DP_ERR(dev, "IB_REG_MR failed rc=%d\n", rc);
2964 *bad_wr = wr;
2965 break;
2966 }
2967
2968 qp->wqe_wr_id[qp->sq.prod].wqe_size = fwqe1->wqe_size;
2969 qp->prev_wqe_size = fwqe1->wqe_size;
2970 break;
2971 default:
2972 DP_ERR(dev, "invalid opcode 0x%x!\n", wr->opcode);
2973 rc = -EINVAL;
2974 *bad_wr = wr;
2975 break;
2976 }
2977
2978 if (*bad_wr) {
2979 u16 value;
2980
2981
2982
2983
2984 value = le16_to_cpu(qp->sq.db_data.data.value);
2985 qed_chain_set_prod(&qp->sq.pbl, value, wqe);
2986
2987
2988 qp->prev_wqe_size = wqe->prev_wqe_size;
2989 rc = -EINVAL;
2990 DP_ERR(dev, "POST SEND FAILED\n");
2991 }
2992
2993 return rc;
2994}
2995
2996int qedr_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
2997 struct ib_send_wr **bad_wr)
2998{
2999 struct qedr_dev *dev = get_qedr_dev(ibqp->device);
3000 struct qedr_qp *qp = get_qedr_qp(ibqp);
3001 unsigned long flags;
3002 int rc = 0;
3003
3004 *bad_wr = NULL;
3005
3006 if (qp->qp_type == IB_QPT_GSI)
3007 return qedr_gsi_post_send(ibqp, wr, bad_wr);
3008
3009 spin_lock_irqsave(&qp->q_lock, flags);
3010
3011 if ((qp->state != QED_ROCE_QP_STATE_RTS) &&
3012 (qp->state != QED_ROCE_QP_STATE_ERR) &&
3013 (qp->state != QED_ROCE_QP_STATE_SQD)) {
3014 spin_unlock_irqrestore(&qp->q_lock, flags);
3015 *bad_wr = wr;
3016 DP_DEBUG(dev, QEDR_MSG_CQ,
3017 "QP in wrong state! QP icid=0x%x state %d\n",
3018 qp->icid, qp->state);
3019 return -EINVAL;
3020 }
3021
3022 while (wr) {
3023 rc = __qedr_post_send(ibqp, wr, bad_wr);
3024 if (rc)
3025 break;
3026
3027 qp->wqe_wr_id[qp->sq.prod].wr_id = wr->wr_id;
3028
3029 qedr_inc_sw_prod(&qp->sq);
3030
3031 qp->sq.db_data.data.value++;
3032
3033 wr = wr->next;
3034 }
3035
3036
3037
3038
3039
3040
3041
3042 wmb();
3043 writel(qp->sq.db_data.raw, qp->sq.db);
3044
3045
3046 mmiowb();
3047
3048 spin_unlock_irqrestore(&qp->q_lock, flags);
3049
3050 return rc;
3051}
3052
3053int qedr_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
3054 struct ib_recv_wr **bad_wr)
3055{
3056 struct qedr_qp *qp = get_qedr_qp(ibqp);
3057 struct qedr_dev *dev = qp->dev;
3058 unsigned long flags;
3059 int status = 0;
3060
3061 if (qp->qp_type == IB_QPT_GSI)
3062 return qedr_gsi_post_recv(ibqp, wr, bad_wr);
3063
3064 spin_lock_irqsave(&qp->q_lock, flags);
3065
3066 if (qp->state == QED_ROCE_QP_STATE_RESET) {
3067 spin_unlock_irqrestore(&qp->q_lock, flags);
3068 *bad_wr = wr;
3069 return -EINVAL;
3070 }
3071
3072 while (wr) {
3073 int i;
3074
3075 if (qed_chain_get_elem_left_u32(&qp->rq.pbl) <
3076 QEDR_MAX_RQE_ELEMENTS_PER_RQE ||
3077 wr->num_sge > qp->rq.max_sges) {
3078 DP_ERR(dev, "Can't post WR (%d < %d) || (%d > %d)\n",
3079 qed_chain_get_elem_left_u32(&qp->rq.pbl),
3080 QEDR_MAX_RQE_ELEMENTS_PER_RQE, wr->num_sge,
3081 qp->rq.max_sges);
3082 status = -ENOMEM;
3083 *bad_wr = wr;
3084 break;
3085 }
3086 for (i = 0; i < wr->num_sge; i++) {
3087 u32 flags = 0;
3088 struct rdma_rq_sge *rqe =
3089 qed_chain_produce(&qp->rq.pbl);
3090
3091
3092
3093
3094 if (!i)
3095 SET_FIELD(flags, RDMA_RQ_SGE_NUM_SGES,
3096 wr->num_sge);
3097
3098 SET_FIELD(flags, RDMA_RQ_SGE_L_KEY,
3099 wr->sg_list[i].lkey);
3100
3101 RQ_SGE_SET(rqe, wr->sg_list[i].addr,
3102 wr->sg_list[i].length, flags);
3103 }
3104
3105
3106
3107
3108
3109 if (!wr->num_sge) {
3110 u32 flags = 0;
3111 struct rdma_rq_sge *rqe =
3112 qed_chain_produce(&qp->rq.pbl);
3113
3114
3115
3116
3117 SET_FIELD(flags, RDMA_RQ_SGE_L_KEY, 0);
3118 SET_FIELD(flags, RDMA_RQ_SGE_NUM_SGES, 1);
3119
3120 RQ_SGE_SET(rqe, 0, 0, flags);
3121 i = 1;
3122 }
3123
3124 qp->rqe_wr_id[qp->rq.prod].wr_id = wr->wr_id;
3125 qp->rqe_wr_id[qp->rq.prod].wqe_size = i;
3126
3127 qedr_inc_sw_prod(&qp->rq);
3128
3129
3130 wmb();
3131
3132 qp->rq.db_data.data.value++;
3133
3134 writel(qp->rq.db_data.raw, qp->rq.db);
3135
3136
3137 mmiowb();
3138
3139 wr = wr->next;
3140 }
3141
3142 spin_unlock_irqrestore(&qp->q_lock, flags);
3143
3144 return status;
3145}
3146
3147static int is_valid_cqe(struct qedr_cq *cq, union rdma_cqe *cqe)
3148{
3149 struct rdma_cqe_requester *resp_cqe = &cqe->req;
3150
3151 return (resp_cqe->flags & RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK) ==
3152 cq->pbl_toggle;
3153}
3154
3155static struct qedr_qp *cqe_get_qp(union rdma_cqe *cqe)
3156{
3157 struct rdma_cqe_requester *resp_cqe = &cqe->req;
3158 struct qedr_qp *qp;
3159
3160 qp = (struct qedr_qp *)(uintptr_t)HILO_GEN(resp_cqe->qp_handle.hi,
3161 resp_cqe->qp_handle.lo,
3162 u64);
3163 return qp;
3164}
3165
3166static enum rdma_cqe_type cqe_get_type(union rdma_cqe *cqe)
3167{
3168 struct rdma_cqe_requester *resp_cqe = &cqe->req;
3169
3170 return GET_FIELD(resp_cqe->flags, RDMA_CQE_REQUESTER_TYPE);
3171}
3172
3173
3174static union rdma_cqe *get_cqe(struct qedr_cq *cq)
3175{
3176 return cq->latest_cqe;
3177}
3178
3179
3180
3181
3182
3183
3184
3185
3186static inline void qedr_chk_if_fmr(struct qedr_qp *qp)
3187{
3188 if (qp->wqe_wr_id[qp->sq.cons].opcode == IB_WC_REG_MR)
3189 qp->wqe_wr_id[qp->sq.cons].mr->info.completed++;
3190}
3191
3192static int process_req(struct qedr_dev *dev, struct qedr_qp *qp,
3193 struct qedr_cq *cq, int num_entries,
3194 struct ib_wc *wc, u16 hw_cons, enum ib_wc_status status,
3195 int force)
3196{
3197 u16 cnt = 0;
3198
3199 while (num_entries && qp->sq.wqe_cons != hw_cons) {
3200 if (!qp->wqe_wr_id[qp->sq.cons].signaled && !force) {
3201 qedr_chk_if_fmr(qp);
3202
3203 goto next_cqe;
3204 }
3205
3206
3207 wc->status = status;
3208 wc->vendor_err = 0;
3209 wc->wc_flags = 0;
3210 wc->src_qp = qp->id;
3211 wc->qp = &qp->ibqp;
3212
3213 wc->wr_id = qp->wqe_wr_id[qp->sq.cons].wr_id;
3214 wc->opcode = qp->wqe_wr_id[qp->sq.cons].opcode;
3215
3216 switch (wc->opcode) {
3217 case IB_WC_RDMA_WRITE:
3218 wc->byte_len = qp->wqe_wr_id[qp->sq.cons].bytes_len;
3219 break;
3220 case IB_WC_COMP_SWAP:
3221 case IB_WC_FETCH_ADD:
3222 wc->byte_len = 8;
3223 break;
3224 case IB_WC_REG_MR:
3225 qp->wqe_wr_id[qp->sq.cons].mr->info.completed++;
3226 break;
3227 default:
3228 break;
3229 }
3230
3231 num_entries--;
3232 wc++;
3233 cnt++;
3234next_cqe:
3235 while (qp->wqe_wr_id[qp->sq.cons].wqe_size--)
3236 qed_chain_consume(&qp->sq.pbl);
3237 qedr_inc_sw_cons(&qp->sq);
3238 }
3239
3240 return cnt;
3241}
3242
3243static int qedr_poll_cq_req(struct qedr_dev *dev,
3244 struct qedr_qp *qp, struct qedr_cq *cq,
3245 int num_entries, struct ib_wc *wc,
3246 struct rdma_cqe_requester *req)
3247{
3248 int cnt = 0;
3249
3250 switch (req->status) {
3251 case RDMA_CQE_REQ_STS_OK:
3252 cnt = process_req(dev, qp, cq, num_entries, wc, req->sq_cons,
3253 IB_WC_SUCCESS, 0);
3254 break;
3255 case RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR:
3256 if (qp->state != QED_ROCE_QP_STATE_ERR)
3257 DP_ERR(dev,
3258 "Error: POLL CQ with RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3259 cq->icid, qp->icid);
3260 cnt = process_req(dev, qp, cq, num_entries, wc, req->sq_cons,
3261 IB_WC_WR_FLUSH_ERR, 1);
3262 break;
3263 default:
3264
3265 qp->state = QED_ROCE_QP_STATE_ERR;
3266 cnt = process_req(dev, qp, cq, num_entries, wc,
3267 req->sq_cons - 1, IB_WC_SUCCESS, 0);
3268 wc += cnt;
3269
3270 if (cnt < num_entries) {
3271 enum ib_wc_status wc_status;
3272
3273 switch (req->status) {
3274 case RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR:
3275 DP_ERR(dev,
3276 "Error: POLL CQ with RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3277 cq->icid, qp->icid);
3278 wc_status = IB_WC_BAD_RESP_ERR;
3279 break;
3280 case RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR:
3281 DP_ERR(dev,
3282 "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3283 cq->icid, qp->icid);
3284 wc_status = IB_WC_LOC_LEN_ERR;
3285 break;
3286 case RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR:
3287 DP_ERR(dev,
3288 "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3289 cq->icid, qp->icid);
3290 wc_status = IB_WC_LOC_QP_OP_ERR;
3291 break;
3292 case RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR:
3293 DP_ERR(dev,
3294 "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3295 cq->icid, qp->icid);
3296 wc_status = IB_WC_LOC_PROT_ERR;
3297 break;
3298 case RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR:
3299 DP_ERR(dev,
3300 "Error: POLL CQ with RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3301 cq->icid, qp->icid);
3302 wc_status = IB_WC_MW_BIND_ERR;
3303 break;
3304 case RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR:
3305 DP_ERR(dev,
3306 "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3307 cq->icid, qp->icid);
3308 wc_status = IB_WC_REM_INV_REQ_ERR;
3309 break;
3310 case RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR:
3311 DP_ERR(dev,
3312 "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3313 cq->icid, qp->icid);
3314 wc_status = IB_WC_REM_ACCESS_ERR;
3315 break;
3316 case RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR:
3317 DP_ERR(dev,
3318 "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3319 cq->icid, qp->icid);
3320 wc_status = IB_WC_REM_OP_ERR;
3321 break;
3322 case RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR:
3323 DP_ERR(dev,
3324 "Error: POLL CQ with RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3325 cq->icid, qp->icid);
3326 wc_status = IB_WC_RNR_RETRY_EXC_ERR;
3327 break;
3328 case RDMA_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR:
3329 DP_ERR(dev,
3330 "Error: POLL CQ with ROCE_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3331 cq->icid, qp->icid);
3332 wc_status = IB_WC_RETRY_EXC_ERR;
3333 break;
3334 default:
3335 DP_ERR(dev,
3336 "Error: POLL CQ with IB_WC_GENERAL_ERR. CQ icid=0x%x, QP icid=0x%x\n",
3337 cq->icid, qp->icid);
3338 wc_status = IB_WC_GENERAL_ERR;
3339 }
3340 cnt += process_req(dev, qp, cq, 1, wc, req->sq_cons,
3341 wc_status, 1);
3342 }
3343 }
3344
3345 return cnt;
3346}
3347
3348static void __process_resp_one(struct qedr_dev *dev, struct qedr_qp *qp,
3349 struct qedr_cq *cq, struct ib_wc *wc,
3350 struct rdma_cqe_responder *resp, u64 wr_id)
3351{
3352 enum ib_wc_status wc_status = IB_WC_SUCCESS;
3353 u8 flags;
3354
3355 wc->opcode = IB_WC_RECV;
3356 wc->wc_flags = 0;
3357
3358 switch (resp->status) {
3359 case RDMA_CQE_RESP_STS_LOCAL_ACCESS_ERR:
3360 wc_status = IB_WC_LOC_ACCESS_ERR;
3361 break;
3362 case RDMA_CQE_RESP_STS_LOCAL_LENGTH_ERR:
3363 wc_status = IB_WC_LOC_LEN_ERR;
3364 break;
3365 case RDMA_CQE_RESP_STS_LOCAL_QP_OPERATION_ERR:
3366 wc_status = IB_WC_LOC_QP_OP_ERR;
3367 break;
3368 case RDMA_CQE_RESP_STS_LOCAL_PROTECTION_ERR:
3369 wc_status = IB_WC_LOC_PROT_ERR;
3370 break;
3371 case RDMA_CQE_RESP_STS_MEMORY_MGT_OPERATION_ERR:
3372 wc_status = IB_WC_MW_BIND_ERR;
3373 break;
3374 case RDMA_CQE_RESP_STS_REMOTE_INVALID_REQUEST_ERR:
3375 wc_status = IB_WC_REM_INV_RD_REQ_ERR;
3376 break;
3377 case RDMA_CQE_RESP_STS_OK:
3378 wc_status = IB_WC_SUCCESS;
3379 wc->byte_len = le32_to_cpu(resp->length);
3380
3381 flags = resp->flags & QEDR_RESP_RDMA_IMM;
3382
3383 if (flags == QEDR_RESP_RDMA_IMM)
3384 wc->opcode = IB_WC_RECV_RDMA_WITH_IMM;
3385
3386 if (flags == QEDR_RESP_RDMA_IMM || flags == QEDR_RESP_IMM) {
3387 wc->ex.imm_data =
3388 le32_to_cpu(resp->imm_data_or_inv_r_Key);
3389 wc->wc_flags |= IB_WC_WITH_IMM;
3390 }
3391 break;
3392 default:
3393 wc->status = IB_WC_GENERAL_ERR;
3394 DP_ERR(dev, "Invalid CQE status detected\n");
3395 }
3396
3397
3398 wc->status = wc_status;
3399 wc->vendor_err = 0;
3400 wc->src_qp = qp->id;
3401 wc->qp = &qp->ibqp;
3402 wc->wr_id = wr_id;
3403}
3404
3405static int process_resp_one(struct qedr_dev *dev, struct qedr_qp *qp,
3406 struct qedr_cq *cq, struct ib_wc *wc,
3407 struct rdma_cqe_responder *resp)
3408{
3409 u64 wr_id = qp->rqe_wr_id[qp->rq.cons].wr_id;
3410
3411 __process_resp_one(dev, qp, cq, wc, resp, wr_id);
3412
3413 while (qp->rqe_wr_id[qp->rq.cons].wqe_size--)
3414 qed_chain_consume(&qp->rq.pbl);
3415 qedr_inc_sw_cons(&qp->rq);
3416
3417 return 1;
3418}
3419
3420static int process_resp_flush(struct qedr_qp *qp, struct qedr_cq *cq,
3421 int num_entries, struct ib_wc *wc, u16 hw_cons)
3422{
3423 u16 cnt = 0;
3424
3425 while (num_entries && qp->rq.wqe_cons != hw_cons) {
3426
3427 wc->status = IB_WC_WR_FLUSH_ERR;
3428 wc->vendor_err = 0;
3429 wc->wc_flags = 0;
3430 wc->src_qp = qp->id;
3431 wc->byte_len = 0;
3432 wc->wr_id = qp->rqe_wr_id[qp->rq.cons].wr_id;
3433 wc->qp = &qp->ibqp;
3434 num_entries--;
3435 wc++;
3436 cnt++;
3437 while (qp->rqe_wr_id[qp->rq.cons].wqe_size--)
3438 qed_chain_consume(&qp->rq.pbl);
3439 qedr_inc_sw_cons(&qp->rq);
3440 }
3441
3442 return cnt;
3443}
3444
3445static void try_consume_resp_cqe(struct qedr_cq *cq, struct qedr_qp *qp,
3446 struct rdma_cqe_responder *resp, int *update)
3447{
3448 if (le16_to_cpu(resp->rq_cons) == qp->rq.wqe_cons) {
3449 consume_cqe(cq);
3450 *update |= 1;
3451 }
3452}
3453
3454static int qedr_poll_cq_resp(struct qedr_dev *dev, struct qedr_qp *qp,
3455 struct qedr_cq *cq, int num_entries,
3456 struct ib_wc *wc, struct rdma_cqe_responder *resp,
3457 int *update)
3458{
3459 int cnt;
3460
3461 if (resp->status == RDMA_CQE_RESP_STS_WORK_REQUEST_FLUSHED_ERR) {
3462 cnt = process_resp_flush(qp, cq, num_entries, wc,
3463 resp->rq_cons);
3464 try_consume_resp_cqe(cq, qp, resp, update);
3465 } else {
3466 cnt = process_resp_one(dev, qp, cq, wc, resp);
3467 consume_cqe(cq);
3468 *update |= 1;
3469 }
3470
3471 return cnt;
3472}
3473
3474static void try_consume_req_cqe(struct qedr_cq *cq, struct qedr_qp *qp,
3475 struct rdma_cqe_requester *req, int *update)
3476{
3477 if (le16_to_cpu(req->sq_cons) == qp->sq.wqe_cons) {
3478 consume_cqe(cq);
3479 *update |= 1;
3480 }
3481}
3482
3483int qedr_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
3484{
3485 struct qedr_dev *dev = get_qedr_dev(ibcq->device);
3486 struct qedr_cq *cq = get_qedr_cq(ibcq);
3487 union rdma_cqe *cqe = cq->latest_cqe;
3488 u32 old_cons, new_cons;
3489 unsigned long flags;
3490 int update = 0;
3491 int done = 0;
3492
3493 if (cq->cq_type == QEDR_CQ_TYPE_GSI)
3494 return qedr_gsi_poll_cq(ibcq, num_entries, wc);
3495
3496 spin_lock_irqsave(&cq->cq_lock, flags);
3497 old_cons = qed_chain_get_cons_idx_u32(&cq->pbl);
3498 while (num_entries && is_valid_cqe(cq, cqe)) {
3499 struct qedr_qp *qp;
3500 int cnt = 0;
3501
3502
3503 rmb();
3504
3505 qp = cqe_get_qp(cqe);
3506 if (!qp) {
3507 WARN(1, "Error: CQE QP pointer is NULL. CQE=%p\n", cqe);
3508 break;
3509 }
3510
3511 wc->qp = &qp->ibqp;
3512
3513 switch (cqe_get_type(cqe)) {
3514 case RDMA_CQE_TYPE_REQUESTER:
3515 cnt = qedr_poll_cq_req(dev, qp, cq, num_entries, wc,
3516 &cqe->req);
3517 try_consume_req_cqe(cq, qp, &cqe->req, &update);
3518 break;
3519 case RDMA_CQE_TYPE_RESPONDER_RQ:
3520 cnt = qedr_poll_cq_resp(dev, qp, cq, num_entries, wc,
3521 &cqe->resp, &update);
3522 break;
3523 case RDMA_CQE_TYPE_INVALID:
3524 default:
3525 DP_ERR(dev, "Error: invalid CQE type = %d\n",
3526 cqe_get_type(cqe));
3527 }
3528 num_entries -= cnt;
3529 wc += cnt;
3530 done += cnt;
3531
3532 cqe = get_cqe(cq);
3533 }
3534 new_cons = qed_chain_get_cons_idx_u32(&cq->pbl);
3535
3536 cq->cq_cons += new_cons - old_cons;
3537
3538 if (update)
3539
3540
3541
3542 doorbell_cq(cq, cq->cq_cons - 1, cq->arm_flags);
3543
3544 spin_unlock_irqrestore(&cq->cq_lock, flags);
3545 return done;
3546}
3547
3548int qedr_process_mad(struct ib_device *ibdev, int process_mad_flags,
3549 u8 port_num,
3550 const struct ib_wc *in_wc,
3551 const struct ib_grh *in_grh,
3552 const struct ib_mad_hdr *mad_hdr,
3553 size_t in_mad_size, struct ib_mad_hdr *out_mad,
3554 size_t *out_mad_size, u16 *out_mad_pkey_index)
3555{
3556 struct qedr_dev *dev = get_qedr_dev(ibdev);
3557
3558 DP_DEBUG(dev, QEDR_MSG_GSI,
3559 "QEDR_PROCESS_MAD in_mad %x %x %x %x %x %x %x %x\n",
3560 mad_hdr->attr_id, mad_hdr->base_version, mad_hdr->attr_mod,
3561 mad_hdr->class_specific, mad_hdr->class_version,
3562 mad_hdr->method, mad_hdr->mgmt_class, mad_hdr->status);
3563 return IB_MAD_RESULT_SUCCESS;
3564}
3565
3566int qedr_port_immutable(struct ib_device *ibdev, u8 port_num,
3567 struct ib_port_immutable *immutable)
3568{
3569 struct ib_port_attr attr;
3570 int err;
3571
3572 err = qedr_query_port(ibdev, port_num, &attr);
3573 if (err)
3574 return err;
3575
3576 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3577 immutable->gid_tbl_len = attr.gid_tbl_len;
3578 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
3579 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
3580 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
3581
3582 return 0;
3583}
3584