Lines Matching +full:sig +full:- +full:dir
1 // SPDX-License-Identifier: GPL-2.0-only
8 #include <linux/pci-p2pdma.h>
25 * be used for iWarp devices because of iWARP-specific limitations. Memory
33 if (dev->attrs.max_sgl_rd) in rdma_rw_can_use_mr()
47 enum dma_data_direction dir, int dma_nents) in rdma_rw_io_needs_mr() argument
49 if (dir == DMA_FROM_DEVICE) { in rdma_rw_io_needs_mr()
52 if (dev->attrs.max_sgl_rd && dma_nents > dev->attrs.max_sgl_rd) in rdma_rw_io_needs_mr()
66 max_pages = dev->attrs.max_pi_fast_reg_page_list_len; in rdma_rw_fr_page_list_len()
68 max_pages = dev->attrs.max_fast_reg_page_list_len; in rdma_rw_fr_page_list_len()
78 if (reg->mr->need_inval) { in rdma_rw_inv_key()
79 reg->inv_wr.opcode = IB_WR_LOCAL_INV; in rdma_rw_inv_key()
80 reg->inv_wr.ex.invalidate_rkey = reg->mr->lkey; in rdma_rw_inv_key()
81 reg->inv_wr.next = ®->reg_wr.wr; in rdma_rw_inv_key()
84 reg->inv_wr.next = NULL; in rdma_rw_inv_key()
90 /* Caller must have zero-initialized *reg. */
95 u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device, in rdma_rw_init_one_mr()
96 qp->integrity_en); in rdma_rw_init_one_mr()
100 reg->mr = ib_mr_pool_get(qp, &qp->rdma_mrs); in rdma_rw_init_one_mr()
101 if (!reg->mr) in rdma_rw_init_one_mr()
102 return -EAGAIN; in rdma_rw_init_one_mr()
106 ret = ib_map_mr_sg(reg->mr, sg, nents, &offset, PAGE_SIZE); in rdma_rw_init_one_mr()
108 ib_mr_pool_put(qp, &qp->rdma_mrs, reg->mr); in rdma_rw_init_one_mr()
109 return -EINVAL; in rdma_rw_init_one_mr()
112 reg->reg_wr.wr.opcode = IB_WR_REG_MR; in rdma_rw_init_one_mr()
113 reg->reg_wr.mr = reg->mr; in rdma_rw_init_one_mr()
114 reg->reg_wr.access = IB_ACCESS_LOCAL_WRITE; in rdma_rw_init_one_mr()
115 if (rdma_protocol_iwarp(qp->device, port_num)) in rdma_rw_init_one_mr()
116 reg->reg_wr.access |= IB_ACCESS_REMOTE_WRITE; in rdma_rw_init_one_mr()
119 reg->sge.addr = reg->mr->iova; in rdma_rw_init_one_mr()
120 reg->sge.length = reg->mr->length; in rdma_rw_init_one_mr()
126 u64 remote_addr, u32 rkey, enum dma_data_direction dir) in rdma_rw_init_mr_wrs() argument
129 u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device, in rdma_rw_init_mr_wrs()
130 qp->integrity_en); in rdma_rw_init_mr_wrs()
133 ctx->nr_ops = DIV_ROUND_UP(sg_cnt, pages_per_mr); in rdma_rw_init_mr_wrs()
134 ctx->reg = kcalloc(ctx->nr_ops, sizeof(*ctx->reg), GFP_KERNEL); in rdma_rw_init_mr_wrs()
135 if (!ctx->reg) { in rdma_rw_init_mr_wrs()
136 ret = -ENOMEM; in rdma_rw_init_mr_wrs()
140 for (i = 0; i < ctx->nr_ops; i++) { in rdma_rw_init_mr_wrs()
141 struct rdma_rw_reg_ctx *reg = &ctx->reg[i]; in rdma_rw_init_mr_wrs()
151 if (reg->mr->need_inval) in rdma_rw_init_mr_wrs()
152 prev->wr.wr.next = ®->inv_wr; in rdma_rw_init_mr_wrs()
154 prev->wr.wr.next = ®->reg_wr.wr; in rdma_rw_init_mr_wrs()
157 reg->reg_wr.wr.next = ®->wr.wr; in rdma_rw_init_mr_wrs()
159 reg->wr.wr.sg_list = ®->sge; in rdma_rw_init_mr_wrs()
160 reg->wr.wr.num_sge = 1; in rdma_rw_init_mr_wrs()
161 reg->wr.remote_addr = remote_addr; in rdma_rw_init_mr_wrs()
162 reg->wr.rkey = rkey; in rdma_rw_init_mr_wrs()
163 if (dir == DMA_TO_DEVICE) { in rdma_rw_init_mr_wrs()
164 reg->wr.wr.opcode = IB_WR_RDMA_WRITE; in rdma_rw_init_mr_wrs()
165 } else if (!rdma_cap_read_inv(qp->device, port_num)) { in rdma_rw_init_mr_wrs()
166 reg->wr.wr.opcode = IB_WR_RDMA_READ; in rdma_rw_init_mr_wrs()
168 reg->wr.wr.opcode = IB_WR_RDMA_READ_WITH_INV; in rdma_rw_init_mr_wrs()
169 reg->wr.wr.ex.invalidate_rkey = reg->mr->lkey; in rdma_rw_init_mr_wrs()
173 remote_addr += reg->sge.length; in rdma_rw_init_mr_wrs()
174 sg_cnt -= nents; in rdma_rw_init_mr_wrs()
182 prev->wr.wr.next = NULL; in rdma_rw_init_mr_wrs()
184 ctx->type = RDMA_RW_MR; in rdma_rw_init_mr_wrs()
188 while (--i >= 0) in rdma_rw_init_mr_wrs()
189 ib_mr_pool_put(qp, &qp->rdma_mrs, ctx->reg[i].mr); in rdma_rw_init_mr_wrs()
190 kfree(ctx->reg); in rdma_rw_init_mr_wrs()
197 u64 remote_addr, u32 rkey, enum dma_data_direction dir) in rdma_rw_init_map_wrs() argument
199 u32 max_sge = dir == DMA_TO_DEVICE ? qp->max_write_sge : in rdma_rw_init_map_wrs()
200 qp->max_read_sge; in rdma_rw_init_map_wrs()
204 ctx->nr_ops = DIV_ROUND_UP(sg_cnt, max_sge); in rdma_rw_init_map_wrs()
206 ctx->map.sges = sge = kcalloc(sg_cnt, sizeof(*sge), GFP_KERNEL); in rdma_rw_init_map_wrs()
207 if (!ctx->map.sges) in rdma_rw_init_map_wrs()
210 ctx->map.wrs = kcalloc(ctx->nr_ops, sizeof(*ctx->map.wrs), GFP_KERNEL); in rdma_rw_init_map_wrs()
211 if (!ctx->map.wrs) in rdma_rw_init_map_wrs()
214 for (i = 0; i < ctx->nr_ops; i++) { in rdma_rw_init_map_wrs()
215 struct ib_rdma_wr *rdma_wr = &ctx->map.wrs[i]; in rdma_rw_init_map_wrs()
218 if (dir == DMA_TO_DEVICE) in rdma_rw_init_map_wrs()
219 rdma_wr->wr.opcode = IB_WR_RDMA_WRITE; in rdma_rw_init_map_wrs()
221 rdma_wr->wr.opcode = IB_WR_RDMA_READ; in rdma_rw_init_map_wrs()
222 rdma_wr->remote_addr = remote_addr + total_len; in rdma_rw_init_map_wrs()
223 rdma_wr->rkey = rkey; in rdma_rw_init_map_wrs()
224 rdma_wr->wr.num_sge = nr_sge; in rdma_rw_init_map_wrs()
225 rdma_wr->wr.sg_list = sge; in rdma_rw_init_map_wrs()
228 sge->addr = sg_dma_address(sg) + offset; in rdma_rw_init_map_wrs()
229 sge->length = sg_dma_len(sg) - offset; in rdma_rw_init_map_wrs()
230 sge->lkey = qp->pd->local_dma_lkey; in rdma_rw_init_map_wrs()
232 total_len += sge->length; in rdma_rw_init_map_wrs()
234 sg_cnt--; in rdma_rw_init_map_wrs()
238 rdma_wr->wr.next = i + 1 < ctx->nr_ops ? in rdma_rw_init_map_wrs()
239 &ctx->map.wrs[i + 1].wr : NULL; in rdma_rw_init_map_wrs()
242 ctx->type = RDMA_RW_MULTI_WR; in rdma_rw_init_map_wrs()
243 return ctx->nr_ops; in rdma_rw_init_map_wrs()
246 kfree(ctx->map.sges); in rdma_rw_init_map_wrs()
248 return -ENOMEM; in rdma_rw_init_map_wrs()
253 enum dma_data_direction dir) in rdma_rw_init_single_wr() argument
255 struct ib_rdma_wr *rdma_wr = &ctx->single.wr; in rdma_rw_init_single_wr()
257 ctx->nr_ops = 1; in rdma_rw_init_single_wr()
259 ctx->single.sge.lkey = qp->pd->local_dma_lkey; in rdma_rw_init_single_wr()
260 ctx->single.sge.addr = sg_dma_address(sg) + offset; in rdma_rw_init_single_wr()
261 ctx->single.sge.length = sg_dma_len(sg) - offset; in rdma_rw_init_single_wr()
264 if (dir == DMA_TO_DEVICE) in rdma_rw_init_single_wr()
265 rdma_wr->wr.opcode = IB_WR_RDMA_WRITE; in rdma_rw_init_single_wr()
267 rdma_wr->wr.opcode = IB_WR_RDMA_READ; in rdma_rw_init_single_wr()
268 rdma_wr->wr.sg_list = &ctx->single.sge; in rdma_rw_init_single_wr()
269 rdma_wr->wr.num_sge = 1; in rdma_rw_init_single_wr()
270 rdma_wr->remote_addr = remote_addr; in rdma_rw_init_single_wr()
271 rdma_wr->rkey = rkey; in rdma_rw_init_single_wr()
273 ctx->type = RDMA_RW_SINGLE_WR; in rdma_rw_init_single_wr()
278 * rdma_rw_ctx_init - initialize a RDMA READ/WRITE context
287 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
294 u64 remote_addr, u32 rkey, enum dma_data_direction dir) in rdma_rw_ctx_init() argument
296 struct ib_device *dev = qp->pd->device; in rdma_rw_ctx_init()
303 ret = ib_dma_map_sgtable_attrs(dev, &sgt, dir, 0); in rdma_rw_ctx_init()
318 sg_offset -= len; in rdma_rw_ctx_init()
319 sg_cnt--; in rdma_rw_ctx_init()
322 ret = -EIO; in rdma_rw_ctx_init()
326 if (rdma_rw_io_needs_mr(qp->device, port_num, dir, sg_cnt)) { in rdma_rw_ctx_init()
328 sg_offset, remote_addr, rkey, dir); in rdma_rw_ctx_init()
331 remote_addr, rkey, dir); in rdma_rw_ctx_init()
334 remote_addr, rkey, dir); in rdma_rw_ctx_init()
342 ib_dma_unmap_sgtable_attrs(dev, &sgt, dir, 0); in rdma_rw_ctx_init()
348 * rdma_rw_ctx_signature_init - initialize a RW context with signature offload
359 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
368 u64 remote_addr, u32 rkey, enum dma_data_direction dir) in rdma_rw_ctx_signature_init() argument
370 struct ib_device *dev = qp->pd->device; in rdma_rw_ctx_signature_init()
371 u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device, in rdma_rw_ctx_signature_init()
372 qp->integrity_en); in rdma_rw_ctx_signature_init()
387 return -EINVAL; in rdma_rw_ctx_signature_init()
390 ret = ib_dma_map_sgtable_attrs(dev, &sgt, dir, 0); in rdma_rw_ctx_signature_init()
395 ret = ib_dma_map_sgtable_attrs(dev, &prot_sgt, dir, 0); in rdma_rw_ctx_signature_init()
400 ctx->type = RDMA_RW_SIG_MR; in rdma_rw_ctx_signature_init()
401 ctx->nr_ops = 1; in rdma_rw_ctx_signature_init()
402 ctx->reg = kzalloc(sizeof(*ctx->reg), GFP_KERNEL); in rdma_rw_ctx_signature_init()
403 if (!ctx->reg) { in rdma_rw_ctx_signature_init()
404 ret = -ENOMEM; in rdma_rw_ctx_signature_init()
408 ctx->reg->mr = ib_mr_pool_get(qp, &qp->sig_mrs); in rdma_rw_ctx_signature_init()
409 if (!ctx->reg->mr) { in rdma_rw_ctx_signature_init()
410 ret = -EAGAIN; in rdma_rw_ctx_signature_init()
414 count += rdma_rw_inv_key(ctx->reg); in rdma_rw_ctx_signature_init()
416 memcpy(ctx->reg->mr->sig_attrs, sig_attrs, sizeof(struct ib_sig_attrs)); in rdma_rw_ctx_signature_init()
418 ret = ib_map_mr_sg_pi(ctx->reg->mr, sg, sgt.nents, NULL, prot_sg, in rdma_rw_ctx_signature_init()
426 ctx->reg->reg_wr.wr.opcode = IB_WR_REG_MR_INTEGRITY; in rdma_rw_ctx_signature_init()
427 ctx->reg->reg_wr.wr.wr_cqe = NULL; in rdma_rw_ctx_signature_init()
428 ctx->reg->reg_wr.wr.num_sge = 0; in rdma_rw_ctx_signature_init()
429 ctx->reg->reg_wr.wr.send_flags = 0; in rdma_rw_ctx_signature_init()
430 ctx->reg->reg_wr.access = IB_ACCESS_LOCAL_WRITE; in rdma_rw_ctx_signature_init()
431 if (rdma_protocol_iwarp(qp->device, port_num)) in rdma_rw_ctx_signature_init()
432 ctx->reg->reg_wr.access |= IB_ACCESS_REMOTE_WRITE; in rdma_rw_ctx_signature_init()
433 ctx->reg->reg_wr.mr = ctx->reg->mr; in rdma_rw_ctx_signature_init()
434 ctx->reg->reg_wr.key = ctx->reg->mr->lkey; in rdma_rw_ctx_signature_init()
437 ctx->reg->sge.addr = ctx->reg->mr->iova; in rdma_rw_ctx_signature_init()
438 ctx->reg->sge.length = ctx->reg->mr->length; in rdma_rw_ctx_signature_init()
439 if (sig_attrs->wire.sig_type == IB_SIG_TYPE_NONE) in rdma_rw_ctx_signature_init()
440 ctx->reg->sge.length -= ctx->reg->mr->sig_attrs->meta_length; in rdma_rw_ctx_signature_init()
442 rdma_wr = &ctx->reg->wr; in rdma_rw_ctx_signature_init()
443 rdma_wr->wr.sg_list = &ctx->reg->sge; in rdma_rw_ctx_signature_init()
444 rdma_wr->wr.num_sge = 1; in rdma_rw_ctx_signature_init()
445 rdma_wr->remote_addr = remote_addr; in rdma_rw_ctx_signature_init()
446 rdma_wr->rkey = rkey; in rdma_rw_ctx_signature_init()
447 if (dir == DMA_TO_DEVICE) in rdma_rw_ctx_signature_init()
448 rdma_wr->wr.opcode = IB_WR_RDMA_WRITE; in rdma_rw_ctx_signature_init()
450 rdma_wr->wr.opcode = IB_WR_RDMA_READ; in rdma_rw_ctx_signature_init()
451 ctx->reg->reg_wr.wr.next = &rdma_wr->wr; in rdma_rw_ctx_signature_init()
457 ib_mr_pool_put(qp, &qp->sig_mrs, ctx->reg->mr); in rdma_rw_ctx_signature_init()
459 kfree(ctx->reg); in rdma_rw_ctx_signature_init()
462 ib_dma_unmap_sgtable_attrs(dev, &prot_sgt, dir, 0); in rdma_rw_ctx_signature_init()
464 ib_dma_unmap_sgtable_attrs(dev, &sgt, dir, 0); in rdma_rw_ctx_signature_init()
477 reg->mr->need_inval = need_inval; in rdma_rw_update_lkey()
478 ib_update_fast_reg_key(reg->mr, ib_inc_rkey(reg->mr->lkey)); in rdma_rw_update_lkey()
479 reg->reg_wr.key = reg->mr->lkey; in rdma_rw_update_lkey()
480 reg->sge.lkey = reg->mr->lkey; in rdma_rw_update_lkey()
484 * rdma_rw_ctx_wrs - return chain of WRs for a RDMA READ or WRITE operation
493 * is non-NULL the WR it points to will be appended to the chain of WRs posted.
503 switch (ctx->type) { in rdma_rw_ctx_wrs()
506 for (i = 0; i < ctx->nr_ops; i++) { in rdma_rw_ctx_wrs()
507 rdma_rw_update_lkey(&ctx->reg[i], in rdma_rw_ctx_wrs()
508 ctx->reg[i].wr.wr.opcode != in rdma_rw_ctx_wrs()
512 if (ctx->reg[0].inv_wr.next) in rdma_rw_ctx_wrs()
513 first_wr = &ctx->reg[0].inv_wr; in rdma_rw_ctx_wrs()
515 first_wr = &ctx->reg[0].reg_wr.wr; in rdma_rw_ctx_wrs()
516 last_wr = &ctx->reg[ctx->nr_ops - 1].wr.wr; in rdma_rw_ctx_wrs()
519 first_wr = &ctx->map.wrs[0].wr; in rdma_rw_ctx_wrs()
520 last_wr = &ctx->map.wrs[ctx->nr_ops - 1].wr; in rdma_rw_ctx_wrs()
523 first_wr = &ctx->single.wr.wr; in rdma_rw_ctx_wrs()
524 last_wr = &ctx->single.wr.wr; in rdma_rw_ctx_wrs()
531 last_wr->next = chain_wr; in rdma_rw_ctx_wrs()
533 last_wr->wr_cqe = cqe; in rdma_rw_ctx_wrs()
534 last_wr->send_flags |= IB_SEND_SIGNALED; in rdma_rw_ctx_wrs()
542 * rdma_rw_ctx_post - post a RDMA READ or RDMA WRITE operation
550 * any memory registration operations needed. If @chain_wr is non-NULL the
566 * rdma_rw_ctx_destroy - release all resources allocated by rdma_rw_ctx_init
572 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
576 enum dma_data_direction dir) in rdma_rw_ctx_destroy() argument
580 switch (ctx->type) { in rdma_rw_ctx_destroy()
582 for (i = 0; i < ctx->nr_ops; i++) in rdma_rw_ctx_destroy()
583 ib_mr_pool_put(qp, &qp->rdma_mrs, ctx->reg[i].mr); in rdma_rw_ctx_destroy()
584 kfree(ctx->reg); in rdma_rw_ctx_destroy()
587 kfree(ctx->map.wrs); in rdma_rw_ctx_destroy()
588 kfree(ctx->map.sges); in rdma_rw_ctx_destroy()
597 ib_dma_unmap_sg(qp->pd->device, sg, sg_cnt, dir); in rdma_rw_ctx_destroy()
602 * rdma_rw_ctx_destroy_signature - release all resources allocated by
611 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
616 enum dma_data_direction dir) in rdma_rw_ctx_destroy_signature() argument
618 if (WARN_ON_ONCE(ctx->type != RDMA_RW_SIG_MR)) in rdma_rw_ctx_destroy_signature()
621 ib_mr_pool_put(qp, &qp->sig_mrs, ctx->reg->mr); in rdma_rw_ctx_destroy_signature()
622 kfree(ctx->reg); in rdma_rw_ctx_destroy_signature()
625 ib_dma_unmap_sg(qp->pd->device, prot_sg, prot_sg_cnt, dir); in rdma_rw_ctx_destroy_signature()
626 ib_dma_unmap_sg(qp->pd->device, sg, sg_cnt, dir); in rdma_rw_ctx_destroy_signature()
631 * rdma_rw_mr_factor - return number of MRs required for a payload
649 mr_pages = device->attrs.max_sge_rd; in rdma_rw_mr_factor()
658 WARN_ON_ONCE(attr->port_num == 0); in rdma_rw_init_qp()
673 if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN || in rdma_rw_init_qp()
674 rdma_rw_can_use_mr(dev, attr->port_num)) in rdma_rw_init_qp()
677 attr->cap.max_send_wr += factor * attr->cap.max_rdma_ctxs; in rdma_rw_init_qp()
683 attr->cap.max_send_wr = in rdma_rw_init_qp()
684 min_t(u32, attr->cap.max_send_wr, dev->attrs.max_qp_wr); in rdma_rw_init_qp()
689 struct ib_device *dev = qp->pd->device; in rdma_rw_init_mrs()
693 if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN) { in rdma_rw_init_mrs()
694 nr_sig_mrs = attr->cap.max_rdma_ctxs; in rdma_rw_init_mrs()
695 nr_mrs = attr->cap.max_rdma_ctxs; in rdma_rw_init_mrs()
697 } else if (rdma_rw_can_use_mr(dev, attr->port_num)) { in rdma_rw_init_mrs()
698 nr_mrs = attr->cap.max_rdma_ctxs; in rdma_rw_init_mrs()
703 ret = ib_mr_pool_init(qp, &qp->rdma_mrs, nr_mrs, in rdma_rw_init_mrs()
714 ret = ib_mr_pool_init(qp, &qp->sig_mrs, nr_sig_mrs, in rdma_rw_init_mrs()
717 pr_err("%s: failed to allocated %u SIG MRs\n", in rdma_rw_init_mrs()
726 ib_mr_pool_destroy(qp, &qp->rdma_mrs); in rdma_rw_init_mrs()
732 ib_mr_pool_destroy(qp, &qp->sig_mrs); in rdma_rw_cleanup_mrs()
733 ib_mr_pool_destroy(qp, &qp->rdma_mrs); in rdma_rw_cleanup_mrs()