Lines Matching +full:sig +full:- +full:dir
1 // SPDX-License-Identifier: GPL-2.0-only
7 #include <linux/pci-p2pdma.h>
24 * be used for iWarp devices because of iWARP-specific limitations. Memory
32 if (dev->attrs.max_sgl_rd) in rdma_rw_can_use_mr()
46 enum dma_data_direction dir, int dma_nents) in rdma_rw_io_needs_mr() argument
48 if (dir == DMA_FROM_DEVICE) { in rdma_rw_io_needs_mr()
51 if (dev->attrs.max_sgl_rd && dma_nents > dev->attrs.max_sgl_rd) in rdma_rw_io_needs_mr()
65 max_pages = dev->attrs.max_pi_fast_reg_page_list_len; in rdma_rw_fr_page_list_len()
67 max_pages = dev->attrs.max_fast_reg_page_list_len; in rdma_rw_fr_page_list_len()
77 if (reg->mr->need_inval) { in rdma_rw_inv_key()
78 reg->inv_wr.opcode = IB_WR_LOCAL_INV; in rdma_rw_inv_key()
79 reg->inv_wr.ex.invalidate_rkey = reg->mr->lkey; in rdma_rw_inv_key()
80 reg->inv_wr.next = ®->reg_wr.wr; in rdma_rw_inv_key()
83 reg->inv_wr.next = NULL; in rdma_rw_inv_key()
89 /* Caller must have zero-initialized *reg. */
94 u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device, in rdma_rw_init_one_mr()
95 qp->integrity_en); in rdma_rw_init_one_mr()
99 reg->mr = ib_mr_pool_get(qp, &qp->rdma_mrs); in rdma_rw_init_one_mr()
100 if (!reg->mr) in rdma_rw_init_one_mr()
101 return -EAGAIN; in rdma_rw_init_one_mr()
105 ret = ib_map_mr_sg(reg->mr, sg, nents, &offset, PAGE_SIZE); in rdma_rw_init_one_mr()
107 ib_mr_pool_put(qp, &qp->rdma_mrs, reg->mr); in rdma_rw_init_one_mr()
108 return -EINVAL; in rdma_rw_init_one_mr()
111 reg->reg_wr.wr.opcode = IB_WR_REG_MR; in rdma_rw_init_one_mr()
112 reg->reg_wr.mr = reg->mr; in rdma_rw_init_one_mr()
113 reg->reg_wr.access = IB_ACCESS_LOCAL_WRITE; in rdma_rw_init_one_mr()
114 if (rdma_protocol_iwarp(qp->device, port_num)) in rdma_rw_init_one_mr()
115 reg->reg_wr.access |= IB_ACCESS_REMOTE_WRITE; in rdma_rw_init_one_mr()
118 reg->sge.addr = reg->mr->iova; in rdma_rw_init_one_mr()
119 reg->sge.length = reg->mr->length; in rdma_rw_init_one_mr()
125 u64 remote_addr, u32 rkey, enum dma_data_direction dir) in rdma_rw_init_mr_wrs() argument
128 u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device, in rdma_rw_init_mr_wrs()
129 qp->integrity_en); in rdma_rw_init_mr_wrs()
132 ctx->nr_ops = DIV_ROUND_UP(sg_cnt, pages_per_mr); in rdma_rw_init_mr_wrs()
133 ctx->reg = kcalloc(ctx->nr_ops, sizeof(*ctx->reg), GFP_KERNEL); in rdma_rw_init_mr_wrs()
134 if (!ctx->reg) { in rdma_rw_init_mr_wrs()
135 ret = -ENOMEM; in rdma_rw_init_mr_wrs()
139 for (i = 0; i < ctx->nr_ops; i++) { in rdma_rw_init_mr_wrs()
140 struct rdma_rw_reg_ctx *reg = &ctx->reg[i]; in rdma_rw_init_mr_wrs()
150 if (reg->mr->need_inval) in rdma_rw_init_mr_wrs()
151 prev->wr.wr.next = ®->inv_wr; in rdma_rw_init_mr_wrs()
153 prev->wr.wr.next = ®->reg_wr.wr; in rdma_rw_init_mr_wrs()
156 reg->reg_wr.wr.next = ®->wr.wr; in rdma_rw_init_mr_wrs()
158 reg->wr.wr.sg_list = ®->sge; in rdma_rw_init_mr_wrs()
159 reg->wr.wr.num_sge = 1; in rdma_rw_init_mr_wrs()
160 reg->wr.remote_addr = remote_addr; in rdma_rw_init_mr_wrs()
161 reg->wr.rkey = rkey; in rdma_rw_init_mr_wrs()
162 if (dir == DMA_TO_DEVICE) { in rdma_rw_init_mr_wrs()
163 reg->wr.wr.opcode = IB_WR_RDMA_WRITE; in rdma_rw_init_mr_wrs()
164 } else if (!rdma_cap_read_inv(qp->device, port_num)) { in rdma_rw_init_mr_wrs()
165 reg->wr.wr.opcode = IB_WR_RDMA_READ; in rdma_rw_init_mr_wrs()
167 reg->wr.wr.opcode = IB_WR_RDMA_READ_WITH_INV; in rdma_rw_init_mr_wrs()
168 reg->wr.wr.ex.invalidate_rkey = reg->mr->lkey; in rdma_rw_init_mr_wrs()
172 remote_addr += reg->sge.length; in rdma_rw_init_mr_wrs()
173 sg_cnt -= nents; in rdma_rw_init_mr_wrs()
181 prev->wr.wr.next = NULL; in rdma_rw_init_mr_wrs()
183 ctx->type = RDMA_RW_MR; in rdma_rw_init_mr_wrs()
187 while (--i >= 0) in rdma_rw_init_mr_wrs()
188 ib_mr_pool_put(qp, &qp->rdma_mrs, ctx->reg[i].mr); in rdma_rw_init_mr_wrs()
189 kfree(ctx->reg); in rdma_rw_init_mr_wrs()
196 u64 remote_addr, u32 rkey, enum dma_data_direction dir) in rdma_rw_init_map_wrs() argument
198 u32 max_sge = dir == DMA_TO_DEVICE ? qp->max_write_sge : in rdma_rw_init_map_wrs()
199 qp->max_read_sge; in rdma_rw_init_map_wrs()
203 ctx->nr_ops = DIV_ROUND_UP(sg_cnt, max_sge); in rdma_rw_init_map_wrs()
205 ctx->map.sges = sge = kcalloc(sg_cnt, sizeof(*sge), GFP_KERNEL); in rdma_rw_init_map_wrs()
206 if (!ctx->map.sges) in rdma_rw_init_map_wrs()
209 ctx->map.wrs = kcalloc(ctx->nr_ops, sizeof(*ctx->map.wrs), GFP_KERNEL); in rdma_rw_init_map_wrs()
210 if (!ctx->map.wrs) in rdma_rw_init_map_wrs()
213 for (i = 0; i < ctx->nr_ops; i++) { in rdma_rw_init_map_wrs()
214 struct ib_rdma_wr *rdma_wr = &ctx->map.wrs[i]; in rdma_rw_init_map_wrs()
217 if (dir == DMA_TO_DEVICE) in rdma_rw_init_map_wrs()
218 rdma_wr->wr.opcode = IB_WR_RDMA_WRITE; in rdma_rw_init_map_wrs()
220 rdma_wr->wr.opcode = IB_WR_RDMA_READ; in rdma_rw_init_map_wrs()
221 rdma_wr->remote_addr = remote_addr + total_len; in rdma_rw_init_map_wrs()
222 rdma_wr->rkey = rkey; in rdma_rw_init_map_wrs()
223 rdma_wr->wr.num_sge = nr_sge; in rdma_rw_init_map_wrs()
224 rdma_wr->wr.sg_list = sge; in rdma_rw_init_map_wrs()
227 sge->addr = sg_dma_address(sg) + offset; in rdma_rw_init_map_wrs()
228 sge->length = sg_dma_len(sg) - offset; in rdma_rw_init_map_wrs()
229 sge->lkey = qp->pd->local_dma_lkey; in rdma_rw_init_map_wrs()
231 total_len += sge->length; in rdma_rw_init_map_wrs()
233 sg_cnt--; in rdma_rw_init_map_wrs()
237 rdma_wr->wr.next = i + 1 < ctx->nr_ops ? in rdma_rw_init_map_wrs()
238 &ctx->map.wrs[i + 1].wr : NULL; in rdma_rw_init_map_wrs()
241 ctx->type = RDMA_RW_MULTI_WR; in rdma_rw_init_map_wrs()
242 return ctx->nr_ops; in rdma_rw_init_map_wrs()
245 kfree(ctx->map.sges); in rdma_rw_init_map_wrs()
247 return -ENOMEM; in rdma_rw_init_map_wrs()
252 enum dma_data_direction dir) in rdma_rw_init_single_wr() argument
254 struct ib_rdma_wr *rdma_wr = &ctx->single.wr; in rdma_rw_init_single_wr()
256 ctx->nr_ops = 1; in rdma_rw_init_single_wr()
258 ctx->single.sge.lkey = qp->pd->local_dma_lkey; in rdma_rw_init_single_wr()
259 ctx->single.sge.addr = sg_dma_address(sg) + offset; in rdma_rw_init_single_wr()
260 ctx->single.sge.length = sg_dma_len(sg) - offset; in rdma_rw_init_single_wr()
263 if (dir == DMA_TO_DEVICE) in rdma_rw_init_single_wr()
264 rdma_wr->wr.opcode = IB_WR_RDMA_WRITE; in rdma_rw_init_single_wr()
266 rdma_wr->wr.opcode = IB_WR_RDMA_READ; in rdma_rw_init_single_wr()
267 rdma_wr->wr.sg_list = &ctx->single.sge; in rdma_rw_init_single_wr()
268 rdma_wr->wr.num_sge = 1; in rdma_rw_init_single_wr()
269 rdma_wr->remote_addr = remote_addr; in rdma_rw_init_single_wr()
270 rdma_wr->rkey = rkey; in rdma_rw_init_single_wr()
272 ctx->type = RDMA_RW_SINGLE_WR; in rdma_rw_init_single_wr()
277 u32 sg_cnt, enum dma_data_direction dir) in rdma_rw_unmap_sg() argument
280 pci_p2pdma_unmap_sg(dev->dma_device, sg, sg_cnt, dir); in rdma_rw_unmap_sg()
282 ib_dma_unmap_sg(dev, sg, sg_cnt, dir); in rdma_rw_unmap_sg()
286 u32 sg_cnt, enum dma_data_direction dir) in rdma_rw_map_sg() argument
291 return pci_p2pdma_map_sg(dev->dma_device, sg, sg_cnt, dir); in rdma_rw_map_sg()
293 return ib_dma_map_sg(dev, sg, sg_cnt, dir); in rdma_rw_map_sg()
297 * rdma_rw_ctx_init - initialize a RDMA READ/WRITE context
306 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
313 u64 remote_addr, u32 rkey, enum dma_data_direction dir) in rdma_rw_ctx_init() argument
315 struct ib_device *dev = qp->pd->device; in rdma_rw_ctx_init()
318 ret = rdma_rw_map_sg(dev, sg, sg_cnt, dir); in rdma_rw_ctx_init()
320 return -ENOMEM; in rdma_rw_ctx_init()
333 sg_offset -= len; in rdma_rw_ctx_init()
334 sg_cnt--; in rdma_rw_ctx_init()
337 ret = -EIO; in rdma_rw_ctx_init()
341 if (rdma_rw_io_needs_mr(qp->device, port_num, dir, sg_cnt)) { in rdma_rw_ctx_init()
343 sg_offset, remote_addr, rkey, dir); in rdma_rw_ctx_init()
346 remote_addr, rkey, dir); in rdma_rw_ctx_init()
349 remote_addr, rkey, dir); in rdma_rw_ctx_init()
357 rdma_rw_unmap_sg(dev, sg, sg_cnt, dir); in rdma_rw_ctx_init()
363 * rdma_rw_ctx_signature_init - initialize a RW context with signature offload
374 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
383 u64 remote_addr, u32 rkey, enum dma_data_direction dir) in rdma_rw_ctx_signature_init() argument
385 struct ib_device *dev = qp->pd->device; in rdma_rw_ctx_signature_init()
386 u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device, in rdma_rw_ctx_signature_init()
387 qp->integrity_en); in rdma_rw_ctx_signature_init()
394 return -EINVAL; in rdma_rw_ctx_signature_init()
397 ret = rdma_rw_map_sg(dev, sg, sg_cnt, dir); in rdma_rw_ctx_signature_init()
399 return -ENOMEM; in rdma_rw_ctx_signature_init()
403 ret = rdma_rw_map_sg(dev, prot_sg, prot_sg_cnt, dir); in rdma_rw_ctx_signature_init()
405 ret = -ENOMEM; in rdma_rw_ctx_signature_init()
411 ctx->type = RDMA_RW_SIG_MR; in rdma_rw_ctx_signature_init()
412 ctx->nr_ops = 1; in rdma_rw_ctx_signature_init()
413 ctx->reg = kzalloc(sizeof(*ctx->reg), GFP_KERNEL); in rdma_rw_ctx_signature_init()
414 if (!ctx->reg) { in rdma_rw_ctx_signature_init()
415 ret = -ENOMEM; in rdma_rw_ctx_signature_init()
419 ctx->reg->mr = ib_mr_pool_get(qp, &qp->sig_mrs); in rdma_rw_ctx_signature_init()
420 if (!ctx->reg->mr) { in rdma_rw_ctx_signature_init()
421 ret = -EAGAIN; in rdma_rw_ctx_signature_init()
425 count += rdma_rw_inv_key(ctx->reg); in rdma_rw_ctx_signature_init()
427 memcpy(ctx->reg->mr->sig_attrs, sig_attrs, sizeof(struct ib_sig_attrs)); in rdma_rw_ctx_signature_init()
429 ret = ib_map_mr_sg_pi(ctx->reg->mr, sg, sg_cnt, NULL, prot_sg, in rdma_rw_ctx_signature_init()
436 ctx->reg->reg_wr.wr.opcode = IB_WR_REG_MR_INTEGRITY; in rdma_rw_ctx_signature_init()
437 ctx->reg->reg_wr.wr.wr_cqe = NULL; in rdma_rw_ctx_signature_init()
438 ctx->reg->reg_wr.wr.num_sge = 0; in rdma_rw_ctx_signature_init()
439 ctx->reg->reg_wr.wr.send_flags = 0; in rdma_rw_ctx_signature_init()
440 ctx->reg->reg_wr.access = IB_ACCESS_LOCAL_WRITE; in rdma_rw_ctx_signature_init()
441 if (rdma_protocol_iwarp(qp->device, port_num)) in rdma_rw_ctx_signature_init()
442 ctx->reg->reg_wr.access |= IB_ACCESS_REMOTE_WRITE; in rdma_rw_ctx_signature_init()
443 ctx->reg->reg_wr.mr = ctx->reg->mr; in rdma_rw_ctx_signature_init()
444 ctx->reg->reg_wr.key = ctx->reg->mr->lkey; in rdma_rw_ctx_signature_init()
447 ctx->reg->sge.addr = ctx->reg->mr->iova; in rdma_rw_ctx_signature_init()
448 ctx->reg->sge.length = ctx->reg->mr->length; in rdma_rw_ctx_signature_init()
449 if (sig_attrs->wire.sig_type == IB_SIG_TYPE_NONE) in rdma_rw_ctx_signature_init()
450 ctx->reg->sge.length -= ctx->reg->mr->sig_attrs->meta_length; in rdma_rw_ctx_signature_init()
452 rdma_wr = &ctx->reg->wr; in rdma_rw_ctx_signature_init()
453 rdma_wr->wr.sg_list = &ctx->reg->sge; in rdma_rw_ctx_signature_init()
454 rdma_wr->wr.num_sge = 1; in rdma_rw_ctx_signature_init()
455 rdma_wr->remote_addr = remote_addr; in rdma_rw_ctx_signature_init()
456 rdma_wr->rkey = rkey; in rdma_rw_ctx_signature_init()
457 if (dir == DMA_TO_DEVICE) in rdma_rw_ctx_signature_init()
458 rdma_wr->wr.opcode = IB_WR_RDMA_WRITE; in rdma_rw_ctx_signature_init()
460 rdma_wr->wr.opcode = IB_WR_RDMA_READ; in rdma_rw_ctx_signature_init()
461 ctx->reg->reg_wr.wr.next = &rdma_wr->wr; in rdma_rw_ctx_signature_init()
467 ib_mr_pool_put(qp, &qp->sig_mrs, ctx->reg->mr); in rdma_rw_ctx_signature_init()
469 kfree(ctx->reg); in rdma_rw_ctx_signature_init()
472 rdma_rw_unmap_sg(dev, prot_sg, prot_sg_cnt, dir); in rdma_rw_ctx_signature_init()
474 rdma_rw_unmap_sg(dev, sg, sg_cnt, dir); in rdma_rw_ctx_signature_init()
487 reg->mr->need_inval = need_inval; in rdma_rw_update_lkey()
488 ib_update_fast_reg_key(reg->mr, ib_inc_rkey(reg->mr->lkey)); in rdma_rw_update_lkey()
489 reg->reg_wr.key = reg->mr->lkey; in rdma_rw_update_lkey()
490 reg->sge.lkey = reg->mr->lkey; in rdma_rw_update_lkey()
494 * rdma_rw_ctx_wrs - return chain of WRs for a RDMA READ or WRITE operation
503 * is non-NULL the WR it points to will be appended to the chain of WRs posted.
513 switch (ctx->type) { in rdma_rw_ctx_wrs()
516 for (i = 0; i < ctx->nr_ops; i++) { in rdma_rw_ctx_wrs()
517 rdma_rw_update_lkey(&ctx->reg[i], in rdma_rw_ctx_wrs()
518 ctx->reg[i].wr.wr.opcode != in rdma_rw_ctx_wrs()
522 if (ctx->reg[0].inv_wr.next) in rdma_rw_ctx_wrs()
523 first_wr = &ctx->reg[0].inv_wr; in rdma_rw_ctx_wrs()
525 first_wr = &ctx->reg[0].reg_wr.wr; in rdma_rw_ctx_wrs()
526 last_wr = &ctx->reg[ctx->nr_ops - 1].wr.wr; in rdma_rw_ctx_wrs()
529 first_wr = &ctx->map.wrs[0].wr; in rdma_rw_ctx_wrs()
530 last_wr = &ctx->map.wrs[ctx->nr_ops - 1].wr; in rdma_rw_ctx_wrs()
533 first_wr = &ctx->single.wr.wr; in rdma_rw_ctx_wrs()
534 last_wr = &ctx->single.wr.wr; in rdma_rw_ctx_wrs()
541 last_wr->next = chain_wr; in rdma_rw_ctx_wrs()
543 last_wr->wr_cqe = cqe; in rdma_rw_ctx_wrs()
544 last_wr->send_flags |= IB_SEND_SIGNALED; in rdma_rw_ctx_wrs()
552 * rdma_rw_ctx_post - post a RDMA READ or RDMA WRITE operation
560 * any memory registration operations needed. If @chain_wr is non-NULL the
576 * rdma_rw_ctx_destroy - release all resources allocated by rdma_rw_ctx_init
582 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
586 enum dma_data_direction dir) in rdma_rw_ctx_destroy() argument
590 switch (ctx->type) { in rdma_rw_ctx_destroy()
592 for (i = 0; i < ctx->nr_ops; i++) in rdma_rw_ctx_destroy()
593 ib_mr_pool_put(qp, &qp->rdma_mrs, ctx->reg[i].mr); in rdma_rw_ctx_destroy()
594 kfree(ctx->reg); in rdma_rw_ctx_destroy()
597 kfree(ctx->map.wrs); in rdma_rw_ctx_destroy()
598 kfree(ctx->map.sges); in rdma_rw_ctx_destroy()
607 rdma_rw_unmap_sg(qp->pd->device, sg, sg_cnt, dir); in rdma_rw_ctx_destroy()
612 * rdma_rw_ctx_destroy_signature - release all resources allocated by
621 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
626 enum dma_data_direction dir) in rdma_rw_ctx_destroy_signature() argument
628 if (WARN_ON_ONCE(ctx->type != RDMA_RW_SIG_MR)) in rdma_rw_ctx_destroy_signature()
631 ib_mr_pool_put(qp, &qp->sig_mrs, ctx->reg->mr); in rdma_rw_ctx_destroy_signature()
632 kfree(ctx->reg); in rdma_rw_ctx_destroy_signature()
635 rdma_rw_unmap_sg(qp->pd->device, prot_sg, prot_sg_cnt, dir); in rdma_rw_ctx_destroy_signature()
636 rdma_rw_unmap_sg(qp->pd->device, sg, sg_cnt, dir); in rdma_rw_ctx_destroy_signature()
641 * rdma_rw_mr_factor - return number of MRs required for a payload
659 mr_pages = device->attrs.max_sge_rd; in rdma_rw_mr_factor()
668 WARN_ON_ONCE(attr->port_num == 0); in rdma_rw_init_qp()
683 if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN || in rdma_rw_init_qp()
684 rdma_rw_can_use_mr(dev, attr->port_num)) in rdma_rw_init_qp()
687 attr->cap.max_send_wr += factor * attr->cap.max_rdma_ctxs; in rdma_rw_init_qp()
693 attr->cap.max_send_wr = in rdma_rw_init_qp()
694 min_t(u32, attr->cap.max_send_wr, dev->attrs.max_qp_wr); in rdma_rw_init_qp()
699 struct ib_device *dev = qp->pd->device; in rdma_rw_init_mrs()
703 if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN) { in rdma_rw_init_mrs()
704 nr_sig_mrs = attr->cap.max_rdma_ctxs; in rdma_rw_init_mrs()
705 nr_mrs = attr->cap.max_rdma_ctxs; in rdma_rw_init_mrs()
707 } else if (rdma_rw_can_use_mr(dev, attr->port_num)) { in rdma_rw_init_mrs()
708 nr_mrs = attr->cap.max_rdma_ctxs; in rdma_rw_init_mrs()
713 ret = ib_mr_pool_init(qp, &qp->rdma_mrs, nr_mrs, in rdma_rw_init_mrs()
724 ret = ib_mr_pool_init(qp, &qp->sig_mrs, nr_sig_mrs, in rdma_rw_init_mrs()
727 pr_err("%s: failed to allocated %u SIG MRs\n", in rdma_rw_init_mrs()
736 ib_mr_pool_destroy(qp, &qp->rdma_mrs); in rdma_rw_init_mrs()
742 ib_mr_pool_destroy(qp, &qp->sig_mrs); in rdma_rw_cleanup_mrs()
743 ib_mr_pool_destroy(qp, &qp->rdma_mrs); in rdma_rw_cleanup_mrs()