1 /* 2 * Broadcom NetXtreme-E RoCE driver. 3 * 4 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term 5 * Broadcom refers to Broadcom Limited and/or its subsidiaries. 6 * 7 * This software is available to you under a choice of one of two 8 * licenses. You may choose to be licensed under the terms of the GNU 9 * General Public License (GPL) Version 2, available from the file 10 * COPYING in the main directory of this source tree, or the 11 * BSD license below: 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in 21 * the documentation and/or other materials provided with the 22 * distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 33 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 34 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 * 36 * Description: IB Verbs interpreter 37 */ 38 39 #include <linux/interrupt.h> 40 #include <linux/types.h> 41 #include <linux/pci.h> 42 #include <linux/netdevice.h> 43 #include <linux/if_ether.h> 44 #include <net/addrconf.h> 45 46 #include <rdma/ib_verbs.h> 47 #include <rdma/ib_user_verbs.h> 48 #include <rdma/ib_umem.h> 49 #include <rdma/ib_addr.h> 50 #include <rdma/ib_mad.h> 51 #include <rdma/ib_cache.h> 52 #include <rdma/uverbs_ioctl.h> 53 #include <linux/hashtable.h> 54 55 #include "bnxt_ulp.h" 56 57 #include "roce_hsi.h" 58 #include "qplib_res.h" 59 #include "qplib_sp.h" 60 #include "qplib_fp.h" 61 #include "qplib_rcfw.h" 62 63 #include "bnxt_re.h" 64 #include "ib_verbs.h" 65 #include "debugfs.h" 66 67 #include <rdma/uverbs_types.h> 68 #include <rdma/uverbs_std_types.h> 69 70 #include <rdma/ib_user_ioctl_cmds.h> 71 72 #define UVERBS_MODULE_NAME bnxt_re 73 #include <rdma/uverbs_named_ioctl.h> 74 75 #include <rdma/bnxt_re-abi.h> 76 77 static int __from_ib_access_flags(int iflags) 78 { 79 int qflags = 0; 80 81 if (iflags & IB_ACCESS_LOCAL_WRITE) 82 qflags |= BNXT_QPLIB_ACCESS_LOCAL_WRITE; 83 if (iflags & IB_ACCESS_REMOTE_READ) 84 qflags |= BNXT_QPLIB_ACCESS_REMOTE_READ; 85 if (iflags & IB_ACCESS_REMOTE_WRITE) 86 qflags |= BNXT_QPLIB_ACCESS_REMOTE_WRITE; 87 if (iflags & IB_ACCESS_REMOTE_ATOMIC) 88 qflags |= BNXT_QPLIB_ACCESS_REMOTE_ATOMIC; 89 if (iflags & IB_ACCESS_MW_BIND) 90 qflags |= BNXT_QPLIB_ACCESS_MW_BIND; 91 if (iflags & IB_ZERO_BASED) 92 qflags |= BNXT_QPLIB_ACCESS_ZERO_BASED; 93 if (iflags & IB_ACCESS_ON_DEMAND) 94 qflags |= BNXT_QPLIB_ACCESS_ON_DEMAND; 95 return qflags; 96 }; 97 98 static int __to_ib_access_flags(int qflags) 99 { 100 int iflags = 0; 101 102 if (qflags & BNXT_QPLIB_ACCESS_LOCAL_WRITE) 103 iflags |= IB_ACCESS_LOCAL_WRITE; 104 if (qflags & BNXT_QPLIB_ACCESS_REMOTE_WRITE) 105 iflags |= IB_ACCESS_REMOTE_WRITE; 106 if (qflags & BNXT_QPLIB_ACCESS_REMOTE_READ) 107 iflags |= IB_ACCESS_REMOTE_READ; 108 if (qflags & BNXT_QPLIB_ACCESS_REMOTE_ATOMIC) 109 iflags |= IB_ACCESS_REMOTE_ATOMIC; 110 if (qflags & BNXT_QPLIB_ACCESS_MW_BIND) 111 iflags |= IB_ACCESS_MW_BIND; 112 if (qflags & BNXT_QPLIB_ACCESS_ZERO_BASED) 113 iflags |= IB_ZERO_BASED; 114 if (qflags & BNXT_QPLIB_ACCESS_ON_DEMAND) 115 iflags |= IB_ACCESS_ON_DEMAND; 116 return iflags; 117 } 118 119 static u8 __qp_access_flags_from_ib(struct bnxt_qplib_chip_ctx *cctx, int iflags) 120 { 121 u8 qflags = 0; 122 123 if (!bnxt_qplib_is_chip_gen_p5_p7(cctx)) 124 /* For Wh+ */ 125 return (u8)__from_ib_access_flags(iflags); 126 127 /* For P5, P7 and later chips */ 128 if (iflags & IB_ACCESS_LOCAL_WRITE) 129 qflags |= CMDQ_MODIFY_QP_ACCESS_LOCAL_WRITE; 130 if (iflags & IB_ACCESS_REMOTE_WRITE) 131 qflags |= CMDQ_MODIFY_QP_ACCESS_REMOTE_WRITE; 132 if (iflags & IB_ACCESS_REMOTE_READ) 133 qflags |= CMDQ_MODIFY_QP_ACCESS_REMOTE_READ; 134 if (iflags & IB_ACCESS_REMOTE_ATOMIC) 135 qflags |= CMDQ_MODIFY_QP_ACCESS_REMOTE_ATOMIC; 136 137 return qflags; 138 } 139 140 static int __qp_access_flags_to_ib(struct bnxt_qplib_chip_ctx *cctx, u8 qflags) 141 { 142 int iflags = 0; 143 144 if (!bnxt_qplib_is_chip_gen_p5_p7(cctx)) 145 /* For Wh+ */ 146 return __to_ib_access_flags(qflags); 147 148 /* For P5, P7 and later chips */ 149 if (qflags & CMDQ_MODIFY_QP_ACCESS_LOCAL_WRITE) 150 iflags |= IB_ACCESS_LOCAL_WRITE; 151 if (qflags & CMDQ_MODIFY_QP_ACCESS_REMOTE_WRITE) 152 iflags |= IB_ACCESS_REMOTE_WRITE; 153 if (qflags & CMDQ_MODIFY_QP_ACCESS_REMOTE_READ) 154 iflags |= IB_ACCESS_REMOTE_READ; 155 if (qflags & CMDQ_MODIFY_QP_ACCESS_REMOTE_ATOMIC) 156 iflags |= IB_ACCESS_REMOTE_ATOMIC; 157 158 return iflags; 159 } 160 161 static void bnxt_re_check_and_set_relaxed_ordering(struct bnxt_re_dev *rdev, 162 struct bnxt_qplib_mrw *qplib_mr) 163 { 164 if (_is_relaxed_ordering_supported(rdev->dev_attr.dev_cap_flags2) && 165 pcie_relaxed_ordering_enabled(rdev->en_dev->pdev)) 166 qplib_mr->flags |= CMDQ_REGISTER_MR_FLAGS_ENABLE_RO; 167 } 168 169 static int bnxt_re_build_sgl(struct ib_sge *ib_sg_list, 170 struct bnxt_qplib_sge *sg_list, int num) 171 { 172 int i, total = 0; 173 174 for (i = 0; i < num; i++) { 175 sg_list[i].addr = ib_sg_list[i].addr; 176 sg_list[i].lkey = ib_sg_list[i].lkey; 177 sg_list[i].size = ib_sg_list[i].length; 178 total += sg_list[i].size; 179 } 180 return total; 181 } 182 183 /* Device */ 184 int bnxt_re_query_device(struct ib_device *ibdev, 185 struct ib_device_attr *ib_attr, 186 struct ib_udata *udata) 187 { 188 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 189 struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; 190 191 memset(ib_attr, 0, sizeof(*ib_attr)); 192 memcpy(&ib_attr->fw_ver, dev_attr->fw_ver, 193 min(sizeof(dev_attr->fw_ver), 194 sizeof(ib_attr->fw_ver))); 195 addrconf_addr_eui48((u8 *)&ib_attr->sys_image_guid, 196 rdev->netdev->dev_addr); 197 ib_attr->max_mr_size = BNXT_RE_MAX_MR_SIZE; 198 ib_attr->page_size_cap = BNXT_RE_PAGE_SIZE_SUPPORTED; 199 200 ib_attr->vendor_id = rdev->en_dev->pdev->vendor; 201 ib_attr->vendor_part_id = rdev->en_dev->pdev->device; 202 ib_attr->hw_ver = rdev->en_dev->pdev->subsystem_device; 203 ib_attr->max_qp = dev_attr->max_qp; 204 ib_attr->max_qp_wr = dev_attr->max_qp_wqes; 205 ib_attr->device_cap_flags = 206 IB_DEVICE_CURR_QP_STATE_MOD 207 | IB_DEVICE_RC_RNR_NAK_GEN 208 | IB_DEVICE_SHUTDOWN_PORT 209 | IB_DEVICE_SYS_IMAGE_GUID 210 | IB_DEVICE_RESIZE_MAX_WR 211 | IB_DEVICE_PORT_ACTIVE_EVENT 212 | IB_DEVICE_N_NOTIFY_CQ 213 | IB_DEVICE_MEM_WINDOW 214 | IB_DEVICE_MEM_WINDOW_TYPE_2B 215 | IB_DEVICE_MEM_MGT_EXTENSIONS; 216 ib_attr->kernel_cap_flags = IBK_LOCAL_DMA_LKEY; 217 ib_attr->max_send_sge = dev_attr->max_qp_sges; 218 ib_attr->max_recv_sge = dev_attr->max_qp_sges; 219 ib_attr->max_sge_rd = dev_attr->max_qp_sges; 220 ib_attr->max_cq = dev_attr->max_cq; 221 ib_attr->max_cqe = dev_attr->max_cq_wqes; 222 ib_attr->max_mr = dev_attr->max_mr; 223 ib_attr->max_pd = dev_attr->max_pd; 224 ib_attr->max_qp_rd_atom = dev_attr->max_qp_rd_atom; 225 ib_attr->max_qp_init_rd_atom = dev_attr->max_qp_init_rd_atom; 226 ib_attr->atomic_cap = IB_ATOMIC_NONE; 227 ib_attr->masked_atomic_cap = IB_ATOMIC_NONE; 228 if (dev_attr->is_atomic) { 229 ib_attr->atomic_cap = IB_ATOMIC_GLOB; 230 ib_attr->masked_atomic_cap = IB_ATOMIC_GLOB; 231 } 232 233 ib_attr->max_ee_rd_atom = 0; 234 ib_attr->max_res_rd_atom = 0; 235 ib_attr->max_ee_init_rd_atom = 0; 236 ib_attr->max_ee = 0; 237 ib_attr->max_rdd = 0; 238 ib_attr->max_mw = dev_attr->max_mw; 239 ib_attr->max_raw_ipv6_qp = 0; 240 ib_attr->max_raw_ethy_qp = dev_attr->max_raw_ethy_qp; 241 ib_attr->max_mcast_grp = 0; 242 ib_attr->max_mcast_qp_attach = 0; 243 ib_attr->max_total_mcast_qp_attach = 0; 244 ib_attr->max_ah = dev_attr->max_ah; 245 246 ib_attr->max_srq = dev_attr->max_srq; 247 ib_attr->max_srq_wr = dev_attr->max_srq_wqes; 248 ib_attr->max_srq_sge = dev_attr->max_srq_sges; 249 250 ib_attr->max_fast_reg_page_list_len = MAX_PBL_LVL_1_PGS; 251 252 ib_attr->max_pkeys = 1; 253 ib_attr->local_ca_ack_delay = BNXT_RE_DEFAULT_ACK_DELAY; 254 return 0; 255 } 256 257 int bnxt_re_modify_device(struct ib_device *ibdev, 258 int device_modify_mask, 259 struct ib_device_modify *device_modify) 260 { 261 ibdev_dbg(ibdev, "Modify device with mask 0x%x", device_modify_mask); 262 263 if (device_modify_mask & ~IB_DEVICE_MODIFY_NODE_DESC) 264 return -EOPNOTSUPP; 265 266 if (!(device_modify_mask & IB_DEVICE_MODIFY_NODE_DESC)) 267 return 0; 268 269 memcpy(ibdev->node_desc, device_modify->node_desc, IB_DEVICE_NODE_DESC_MAX); 270 return 0; 271 } 272 273 /* Port */ 274 int bnxt_re_query_port(struct ib_device *ibdev, u32 port_num, 275 struct ib_port_attr *port_attr) 276 { 277 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 278 struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; 279 int rc; 280 281 memset(port_attr, 0, sizeof(*port_attr)); 282 283 if (netif_running(rdev->netdev) && netif_carrier_ok(rdev->netdev)) { 284 port_attr->state = IB_PORT_ACTIVE; 285 port_attr->phys_state = IB_PORT_PHYS_STATE_LINK_UP; 286 } else { 287 port_attr->state = IB_PORT_DOWN; 288 port_attr->phys_state = IB_PORT_PHYS_STATE_DISABLED; 289 } 290 port_attr->max_mtu = IB_MTU_4096; 291 port_attr->active_mtu = iboe_get_mtu(rdev->netdev->mtu); 292 port_attr->gid_tbl_len = dev_attr->max_sgid; 293 port_attr->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP | 294 IB_PORT_DEVICE_MGMT_SUP | 295 IB_PORT_VENDOR_CLASS_SUP; 296 port_attr->ip_gids = true; 297 298 port_attr->max_msg_sz = (u32)BNXT_RE_MAX_MR_SIZE_LOW; 299 port_attr->bad_pkey_cntr = 0; 300 port_attr->qkey_viol_cntr = 0; 301 port_attr->pkey_tbl_len = dev_attr->max_pkey; 302 port_attr->lid = 0; 303 port_attr->sm_lid = 0; 304 port_attr->lmc = 0; 305 port_attr->max_vl_num = 4; 306 port_attr->sm_sl = 0; 307 port_attr->subnet_timeout = 0; 308 port_attr->init_type_reply = 0; 309 rc = ib_get_eth_speed(&rdev->ibdev, port_num, &port_attr->active_speed, 310 &port_attr->active_width); 311 312 return rc; 313 } 314 315 int bnxt_re_get_port_immutable(struct ib_device *ibdev, u32 port_num, 316 struct ib_port_immutable *immutable) 317 { 318 struct ib_port_attr port_attr; 319 320 if (bnxt_re_query_port(ibdev, port_num, &port_attr)) 321 return -EINVAL; 322 323 immutable->pkey_tbl_len = port_attr.pkey_tbl_len; 324 immutable->gid_tbl_len = port_attr.gid_tbl_len; 325 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; 326 immutable->core_cap_flags |= RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP; 327 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 328 return 0; 329 } 330 331 void bnxt_re_query_fw_str(struct ib_device *ibdev, char *str) 332 { 333 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 334 335 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d.%d", 336 rdev->dev_attr.fw_ver[0], rdev->dev_attr.fw_ver[1], 337 rdev->dev_attr.fw_ver[2], rdev->dev_attr.fw_ver[3]); 338 } 339 340 int bnxt_re_query_pkey(struct ib_device *ibdev, u32 port_num, 341 u16 index, u16 *pkey) 342 { 343 if (index > 0) 344 return -EINVAL; 345 346 *pkey = IB_DEFAULT_PKEY_FULL; 347 348 return 0; 349 } 350 351 int bnxt_re_query_gid(struct ib_device *ibdev, u32 port_num, 352 int index, union ib_gid *gid) 353 { 354 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 355 int rc; 356 357 /* Ignore port_num */ 358 memset(gid, 0, sizeof(*gid)); 359 rc = bnxt_qplib_get_sgid(&rdev->qplib_res, 360 &rdev->qplib_res.sgid_tbl, index, 361 (struct bnxt_qplib_gid *)gid); 362 return rc; 363 } 364 365 int bnxt_re_del_gid(const struct ib_gid_attr *attr, void **context) 366 { 367 int rc = 0; 368 struct bnxt_re_gid_ctx *ctx, **ctx_tbl; 369 struct bnxt_re_dev *rdev = to_bnxt_re_dev(attr->device, ibdev); 370 struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl; 371 struct bnxt_qplib_gid *gid_to_del; 372 u16 vlan_id = 0xFFFF; 373 374 /* Delete the entry from the hardware */ 375 ctx = *context; 376 if (!ctx) 377 return -EINVAL; 378 379 if (sgid_tbl && sgid_tbl->active) { 380 if (ctx->idx >= sgid_tbl->max) 381 return -EINVAL; 382 gid_to_del = &sgid_tbl->tbl[ctx->idx].gid; 383 vlan_id = sgid_tbl->tbl[ctx->idx].vlan_id; 384 /* DEL_GID is called in WQ context(netdevice_event_work_handler) 385 * or via the ib_unregister_device path. In the former case QP1 386 * may not be destroyed yet, in which case just return as FW 387 * needs that entry to be present and will fail it's deletion. 388 * We could get invoked again after QP1 is destroyed OR get an 389 * ADD_GID call with a different GID value for the same index 390 * where we issue MODIFY_GID cmd to update the GID entry -- TBD 391 */ 392 if (ctx->idx == 0 && 393 rdma_link_local_addr((struct in6_addr *)gid_to_del) && 394 ctx->refcnt == 1 && rdev->gsi_ctx.gsi_sqp) { 395 ibdev_dbg(&rdev->ibdev, 396 "Trying to delete GID0 while QP1 is alive\n"); 397 return -EFAULT; 398 } 399 ctx->refcnt--; 400 if (!ctx->refcnt) { 401 rc = bnxt_qplib_del_sgid(sgid_tbl, gid_to_del, 402 vlan_id, true); 403 if (rc) { 404 ibdev_err(&rdev->ibdev, 405 "Failed to remove GID: %#x", rc); 406 } else { 407 ctx_tbl = sgid_tbl->ctx; 408 ctx_tbl[ctx->idx] = NULL; 409 kfree(ctx); 410 } 411 } 412 } else { 413 return -EINVAL; 414 } 415 return rc; 416 } 417 418 int bnxt_re_add_gid(const struct ib_gid_attr *attr, void **context) 419 { 420 int rc; 421 u32 tbl_idx = 0; 422 u16 vlan_id = 0xFFFF; 423 struct bnxt_re_gid_ctx *ctx, **ctx_tbl; 424 struct bnxt_re_dev *rdev = to_bnxt_re_dev(attr->device, ibdev); 425 struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl; 426 427 rc = rdma_read_gid_l2_fields(attr, &vlan_id, NULL); 428 if (rc) 429 return rc; 430 431 rc = bnxt_qplib_add_sgid(sgid_tbl, (struct bnxt_qplib_gid *)&attr->gid, 432 rdev->qplib_res.netdev->dev_addr, 433 vlan_id, true, &tbl_idx); 434 if (rc == -EALREADY) { 435 ctx_tbl = sgid_tbl->ctx; 436 ctx_tbl[tbl_idx]->refcnt++; 437 *context = ctx_tbl[tbl_idx]; 438 return 0; 439 } 440 441 if (rc < 0) { 442 ibdev_err(&rdev->ibdev, "Failed to add GID: %#x", rc); 443 return rc; 444 } 445 446 ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); 447 if (!ctx) 448 return -ENOMEM; 449 ctx_tbl = sgid_tbl->ctx; 450 ctx->idx = tbl_idx; 451 ctx->refcnt = 1; 452 ctx_tbl[tbl_idx] = ctx; 453 *context = ctx; 454 455 return rc; 456 } 457 458 enum rdma_link_layer bnxt_re_get_link_layer(struct ib_device *ibdev, 459 u32 port_num) 460 { 461 return IB_LINK_LAYER_ETHERNET; 462 } 463 464 #define BNXT_RE_FENCE_PBL_SIZE DIV_ROUND_UP(BNXT_RE_FENCE_BYTES, PAGE_SIZE) 465 466 static void bnxt_re_create_fence_wqe(struct bnxt_re_pd *pd) 467 { 468 struct bnxt_re_fence_data *fence = &pd->fence; 469 struct ib_mr *ib_mr = &fence->mr->ib_mr; 470 struct bnxt_qplib_swqe *wqe = &fence->bind_wqe; 471 struct bnxt_re_dev *rdev = pd->rdev; 472 473 if (bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) 474 return; 475 476 memset(wqe, 0, sizeof(*wqe)); 477 wqe->type = BNXT_QPLIB_SWQE_TYPE_BIND_MW; 478 wqe->wr_id = BNXT_QPLIB_FENCE_WRID; 479 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 480 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; 481 wqe->bind.zero_based = false; 482 wqe->bind.parent_l_key = ib_mr->lkey; 483 wqe->bind.va = (u64)(unsigned long)fence->va; 484 wqe->bind.length = fence->size; 485 wqe->bind.access_cntl = __from_ib_access_flags(IB_ACCESS_REMOTE_READ); 486 wqe->bind.mw_type = SQ_BIND_MW_TYPE_TYPE1; 487 488 /* Save the initial rkey in fence structure for now; 489 * wqe->bind.r_key will be set at (re)bind time. 490 */ 491 fence->bind_rkey = ib_inc_rkey(fence->mw->rkey); 492 } 493 494 static int bnxt_re_bind_fence_mw(struct bnxt_qplib_qp *qplib_qp) 495 { 496 struct bnxt_re_qp *qp = container_of(qplib_qp, struct bnxt_re_qp, 497 qplib_qp); 498 struct ib_pd *ib_pd = qp->ib_qp.pd; 499 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 500 struct bnxt_re_fence_data *fence = &pd->fence; 501 struct bnxt_qplib_swqe *fence_wqe = &fence->bind_wqe; 502 struct bnxt_qplib_swqe wqe; 503 int rc; 504 505 memcpy(&wqe, fence_wqe, sizeof(wqe)); 506 wqe.bind.r_key = fence->bind_rkey; 507 fence->bind_rkey = ib_inc_rkey(fence->bind_rkey); 508 509 ibdev_dbg(&qp->rdev->ibdev, 510 "Posting bind fence-WQE: rkey: %#x QP: %d PD: %p\n", 511 wqe.bind.r_key, qp->qplib_qp.id, pd); 512 rc = bnxt_qplib_post_send(&qp->qplib_qp, &wqe); 513 if (rc) { 514 ibdev_err(&qp->rdev->ibdev, "Failed to bind fence-WQE\n"); 515 return rc; 516 } 517 bnxt_qplib_post_send_db(&qp->qplib_qp); 518 519 return rc; 520 } 521 522 static void bnxt_re_destroy_fence_mr(struct bnxt_re_pd *pd) 523 { 524 struct bnxt_re_fence_data *fence = &pd->fence; 525 struct bnxt_re_dev *rdev = pd->rdev; 526 struct device *dev = &rdev->en_dev->pdev->dev; 527 struct bnxt_re_mr *mr = fence->mr; 528 529 if (bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) 530 return; 531 532 if (fence->mw) { 533 bnxt_re_dealloc_mw(fence->mw); 534 fence->mw = NULL; 535 } 536 if (mr) { 537 if (mr->ib_mr.rkey) 538 bnxt_qplib_dereg_mrw(&rdev->qplib_res, &mr->qplib_mr, 539 true); 540 if (mr->ib_mr.lkey) 541 bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); 542 kfree(mr); 543 fence->mr = NULL; 544 } 545 if (fence->dma_addr) { 546 dma_unmap_single(dev, fence->dma_addr, BNXT_RE_FENCE_BYTES, 547 DMA_BIDIRECTIONAL); 548 fence->dma_addr = 0; 549 } 550 } 551 552 static int bnxt_re_create_fence_mr(struct bnxt_re_pd *pd) 553 { 554 int mr_access_flags = IB_ACCESS_LOCAL_WRITE | IB_ACCESS_MW_BIND; 555 struct bnxt_re_fence_data *fence = &pd->fence; 556 struct bnxt_re_dev *rdev = pd->rdev; 557 struct device *dev = &rdev->en_dev->pdev->dev; 558 struct bnxt_re_mr *mr = NULL; 559 dma_addr_t dma_addr = 0; 560 struct ib_mw *mw; 561 int rc; 562 563 if (bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) 564 return 0; 565 566 dma_addr = dma_map_single(dev, fence->va, BNXT_RE_FENCE_BYTES, 567 DMA_BIDIRECTIONAL); 568 rc = dma_mapping_error(dev, dma_addr); 569 if (rc) { 570 ibdev_err(&rdev->ibdev, "Failed to dma-map fence-MR-mem\n"); 571 rc = -EIO; 572 fence->dma_addr = 0; 573 goto fail; 574 } 575 fence->dma_addr = dma_addr; 576 577 /* Allocate a MR */ 578 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 579 if (!mr) { 580 rc = -ENOMEM; 581 goto fail; 582 } 583 fence->mr = mr; 584 mr->rdev = rdev; 585 mr->qplib_mr.pd = &pd->qplib_pd; 586 mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_PMR; 587 mr->qplib_mr.access_flags = __from_ib_access_flags(mr_access_flags); 588 if (!_is_alloc_mr_unified(rdev->dev_attr.dev_cap_flags)) { 589 rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr); 590 if (rc) { 591 ibdev_err(&rdev->ibdev, "Failed to alloc fence-HW-MR\n"); 592 goto fail; 593 } 594 595 /* Register MR */ 596 mr->ib_mr.lkey = mr->qplib_mr.lkey; 597 } else { 598 mr->qplib_mr.flags = CMDQ_REGISTER_MR_FLAGS_ALLOC_MR; 599 } 600 mr->qplib_mr.va = (u64)(unsigned long)fence->va; 601 mr->qplib_mr.total_size = BNXT_RE_FENCE_BYTES; 602 rc = bnxt_qplib_reg_mr(&rdev->qplib_res, &mr->qplib_mr, NULL, 603 BNXT_RE_FENCE_PBL_SIZE, PAGE_SIZE); 604 if (rc) { 605 ibdev_err(&rdev->ibdev, "Failed to register fence-MR\n"); 606 goto fail; 607 } 608 mr->ib_mr.rkey = mr->qplib_mr.rkey; 609 610 /* Create a fence MW only for kernel consumers */ 611 mw = bnxt_re_alloc_mw(&pd->ib_pd, IB_MW_TYPE_1, NULL); 612 if (IS_ERR(mw)) { 613 ibdev_err(&rdev->ibdev, 614 "Failed to create fence-MW for PD: %p\n", pd); 615 rc = PTR_ERR(mw); 616 goto fail; 617 } 618 fence->mw = mw; 619 620 bnxt_re_create_fence_wqe(pd); 621 return 0; 622 623 fail: 624 bnxt_re_destroy_fence_mr(pd); 625 return rc; 626 } 627 628 static struct bnxt_re_user_mmap_entry* 629 bnxt_re_mmap_entry_insert(struct bnxt_re_ucontext *uctx, u64 mem_offset, 630 enum bnxt_re_mmap_flag mmap_flag, u64 *offset) 631 { 632 struct bnxt_re_user_mmap_entry *entry; 633 int ret; 634 635 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 636 if (!entry) 637 return NULL; 638 639 entry->mem_offset = mem_offset; 640 entry->mmap_flag = mmap_flag; 641 entry->uctx = uctx; 642 643 switch (mmap_flag) { 644 case BNXT_RE_MMAP_SH_PAGE: 645 ret = rdma_user_mmap_entry_insert_exact(&uctx->ib_uctx, 646 &entry->rdma_entry, PAGE_SIZE, 0); 647 break; 648 case BNXT_RE_MMAP_UC_DB: 649 case BNXT_RE_MMAP_WC_DB: 650 case BNXT_RE_MMAP_DBR_BAR: 651 case BNXT_RE_MMAP_DBR_PAGE: 652 case BNXT_RE_MMAP_TOGGLE_PAGE: 653 ret = rdma_user_mmap_entry_insert(&uctx->ib_uctx, 654 &entry->rdma_entry, PAGE_SIZE); 655 break; 656 default: 657 ret = -EINVAL; 658 break; 659 } 660 661 if (ret) { 662 kfree(entry); 663 return NULL; 664 } 665 if (offset) 666 *offset = rdma_user_mmap_get_offset(&entry->rdma_entry); 667 668 return entry; 669 } 670 671 /* Protection Domains */ 672 int bnxt_re_dealloc_pd(struct ib_pd *ib_pd, struct ib_udata *udata) 673 { 674 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 675 struct bnxt_re_dev *rdev = pd->rdev; 676 677 if (udata) { 678 rdma_user_mmap_entry_remove(pd->pd_db_mmap); 679 pd->pd_db_mmap = NULL; 680 } 681 682 bnxt_re_destroy_fence_mr(pd); 683 684 if (pd->qplib_pd.id) { 685 if (!bnxt_qplib_dealloc_pd(&rdev->qplib_res, 686 &rdev->qplib_res.pd_tbl, 687 &pd->qplib_pd)) 688 atomic_dec(&rdev->stats.res.pd_count); 689 } 690 return 0; 691 } 692 693 int bnxt_re_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 694 { 695 struct ib_device *ibdev = ibpd->device; 696 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 697 struct bnxt_re_ucontext *ucntx = rdma_udata_to_drv_context( 698 udata, struct bnxt_re_ucontext, ib_uctx); 699 struct bnxt_re_pd *pd = container_of(ibpd, struct bnxt_re_pd, ib_pd); 700 struct bnxt_re_user_mmap_entry *entry = NULL; 701 u32 active_pds; 702 int rc = 0; 703 704 pd->rdev = rdev; 705 if (bnxt_qplib_alloc_pd(&rdev->qplib_res, &pd->qplib_pd)) { 706 ibdev_err(&rdev->ibdev, "Failed to allocate HW PD"); 707 rc = -ENOMEM; 708 goto fail; 709 } 710 711 if (udata) { 712 struct bnxt_re_pd_resp resp = {}; 713 714 if (!ucntx->dpi.dbr) { 715 /* Allocate DPI in alloc_pd to avoid failing of 716 * ibv_devinfo and family of application when DPIs 717 * are depleted. 718 */ 719 if (bnxt_qplib_alloc_dpi(&rdev->qplib_res, 720 &ucntx->dpi, ucntx, BNXT_QPLIB_DPI_TYPE_UC)) { 721 rc = -ENOMEM; 722 goto dbfail; 723 } 724 } 725 726 resp.pdid = pd->qplib_pd.id; 727 /* Still allow mapping this DBR to the new user PD. */ 728 resp.dpi = ucntx->dpi.dpi; 729 730 entry = bnxt_re_mmap_entry_insert(ucntx, (u64)ucntx->dpi.umdbr, 731 BNXT_RE_MMAP_UC_DB, &resp.dbr); 732 733 if (!entry) { 734 rc = -ENOMEM; 735 goto dbfail; 736 } 737 738 pd->pd_db_mmap = &entry->rdma_entry; 739 740 rc = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); 741 if (rc) { 742 rdma_user_mmap_entry_remove(pd->pd_db_mmap); 743 rc = -EFAULT; 744 goto dbfail; 745 } 746 } 747 748 if (!udata) 749 if (bnxt_re_create_fence_mr(pd)) 750 ibdev_warn(&rdev->ibdev, 751 "Failed to create Fence-MR\n"); 752 active_pds = atomic_inc_return(&rdev->stats.res.pd_count); 753 if (active_pds > rdev->stats.res.pd_watermark) 754 rdev->stats.res.pd_watermark = active_pds; 755 756 return 0; 757 dbfail: 758 bnxt_qplib_dealloc_pd(&rdev->qplib_res, &rdev->qplib_res.pd_tbl, 759 &pd->qplib_pd); 760 fail: 761 return rc; 762 } 763 764 /* Address Handles */ 765 int bnxt_re_destroy_ah(struct ib_ah *ib_ah, u32 flags) 766 { 767 struct bnxt_re_ah *ah = container_of(ib_ah, struct bnxt_re_ah, ib_ah); 768 struct bnxt_re_dev *rdev = ah->rdev; 769 bool block = true; 770 int rc; 771 772 block = !(flags & RDMA_DESTROY_AH_SLEEPABLE); 773 rc = bnxt_qplib_destroy_ah(&rdev->qplib_res, &ah->qplib_ah, block); 774 if (BNXT_RE_CHECK_RC(rc)) { 775 if (rc == -ETIMEDOUT) 776 rc = 0; 777 else 778 goto fail; 779 } 780 atomic_dec(&rdev->stats.res.ah_count); 781 fail: 782 return rc; 783 } 784 785 static u8 bnxt_re_stack_to_dev_nw_type(enum rdma_network_type ntype) 786 { 787 u8 nw_type; 788 789 switch (ntype) { 790 case RDMA_NETWORK_IPV4: 791 nw_type = CMDQ_CREATE_AH_TYPE_V2IPV4; 792 break; 793 case RDMA_NETWORK_IPV6: 794 nw_type = CMDQ_CREATE_AH_TYPE_V2IPV6; 795 break; 796 default: 797 nw_type = CMDQ_CREATE_AH_TYPE_V1; 798 break; 799 } 800 return nw_type; 801 } 802 803 int bnxt_re_create_ah(struct ib_ah *ib_ah, struct rdma_ah_init_attr *init_attr, 804 struct ib_udata *udata) 805 { 806 struct ib_pd *ib_pd = ib_ah->pd; 807 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 808 struct rdma_ah_attr *ah_attr = init_attr->ah_attr; 809 const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr); 810 struct bnxt_re_dev *rdev = pd->rdev; 811 const struct ib_gid_attr *sgid_attr; 812 struct bnxt_re_gid_ctx *ctx; 813 struct bnxt_re_ah *ah = container_of(ib_ah, struct bnxt_re_ah, ib_ah); 814 u32 active_ahs; 815 u8 nw_type; 816 int rc; 817 818 if (!(rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH)) { 819 ibdev_err(&rdev->ibdev, "Failed to alloc AH: GRH not set"); 820 return -EINVAL; 821 } 822 823 ah->rdev = rdev; 824 ah->qplib_ah.pd = &pd->qplib_pd; 825 826 /* Supply the configuration for the HW */ 827 memcpy(ah->qplib_ah.dgid.data, grh->dgid.raw, 828 sizeof(union ib_gid)); 829 sgid_attr = grh->sgid_attr; 830 /* Get the HW context of the GID. The reference 831 * of GID table entry is already taken by the caller. 832 */ 833 ctx = rdma_read_gid_hw_context(sgid_attr); 834 ah->qplib_ah.sgid_index = ctx->idx; 835 ah->qplib_ah.host_sgid_index = grh->sgid_index; 836 ah->qplib_ah.traffic_class = grh->traffic_class; 837 ah->qplib_ah.flow_label = grh->flow_label; 838 ah->qplib_ah.hop_limit = grh->hop_limit; 839 ah->qplib_ah.sl = rdma_ah_get_sl(ah_attr); 840 841 /* Get network header type for this GID */ 842 nw_type = rdma_gid_attr_network_type(sgid_attr); 843 ah->qplib_ah.nw_type = bnxt_re_stack_to_dev_nw_type(nw_type); 844 845 memcpy(ah->qplib_ah.dmac, ah_attr->roce.dmac, ETH_ALEN); 846 rc = bnxt_qplib_create_ah(&rdev->qplib_res, &ah->qplib_ah, 847 !(init_attr->flags & 848 RDMA_CREATE_AH_SLEEPABLE)); 849 if (rc) { 850 ibdev_err(&rdev->ibdev, "Failed to allocate HW AH"); 851 return rc; 852 } 853 854 /* Write AVID to shared page. */ 855 if (udata) { 856 struct bnxt_re_ucontext *uctx = rdma_udata_to_drv_context( 857 udata, struct bnxt_re_ucontext, ib_uctx); 858 unsigned long flag; 859 u32 *wrptr; 860 861 spin_lock_irqsave(&uctx->sh_lock, flag); 862 wrptr = (u32 *)(uctx->shpg + BNXT_RE_AVID_OFFT); 863 *wrptr = ah->qplib_ah.id; 864 wmb(); /* make sure cache is updated. */ 865 spin_unlock_irqrestore(&uctx->sh_lock, flag); 866 } 867 active_ahs = atomic_inc_return(&rdev->stats.res.ah_count); 868 if (active_ahs > rdev->stats.res.ah_watermark) 869 rdev->stats.res.ah_watermark = active_ahs; 870 871 return 0; 872 } 873 874 int bnxt_re_query_ah(struct ib_ah *ib_ah, struct rdma_ah_attr *ah_attr) 875 { 876 struct bnxt_re_ah *ah = container_of(ib_ah, struct bnxt_re_ah, ib_ah); 877 878 ah_attr->type = ib_ah->type; 879 rdma_ah_set_sl(ah_attr, ah->qplib_ah.sl); 880 memcpy(ah_attr->roce.dmac, ah->qplib_ah.dmac, ETH_ALEN); 881 rdma_ah_set_grh(ah_attr, NULL, 0, 882 ah->qplib_ah.host_sgid_index, 883 0, ah->qplib_ah.traffic_class); 884 rdma_ah_set_dgid_raw(ah_attr, ah->qplib_ah.dgid.data); 885 rdma_ah_set_port_num(ah_attr, 1); 886 rdma_ah_set_static_rate(ah_attr, 0); 887 return 0; 888 } 889 890 unsigned long bnxt_re_lock_cqs(struct bnxt_re_qp *qp) 891 __acquires(&qp->scq->cq_lock) __acquires(&qp->rcq->cq_lock) 892 { 893 unsigned long flags; 894 895 spin_lock_irqsave(&qp->scq->cq_lock, flags); 896 if (qp->rcq != qp->scq) 897 spin_lock(&qp->rcq->cq_lock); 898 else 899 __acquire(&qp->rcq->cq_lock); 900 901 return flags; 902 } 903 904 void bnxt_re_unlock_cqs(struct bnxt_re_qp *qp, 905 unsigned long flags) 906 __releases(&qp->scq->cq_lock) __releases(&qp->rcq->cq_lock) 907 { 908 if (qp->rcq != qp->scq) 909 spin_unlock(&qp->rcq->cq_lock); 910 else 911 __release(&qp->rcq->cq_lock); 912 spin_unlock_irqrestore(&qp->scq->cq_lock, flags); 913 } 914 915 static int bnxt_re_destroy_gsi_sqp(struct bnxt_re_qp *qp) 916 { 917 struct bnxt_re_qp *gsi_sqp; 918 struct bnxt_re_ah *gsi_sah; 919 struct bnxt_re_dev *rdev; 920 int rc; 921 922 rdev = qp->rdev; 923 gsi_sqp = rdev->gsi_ctx.gsi_sqp; 924 gsi_sah = rdev->gsi_ctx.gsi_sah; 925 926 ibdev_dbg(&rdev->ibdev, "Destroy the shadow AH\n"); 927 bnxt_qplib_destroy_ah(&rdev->qplib_res, 928 &gsi_sah->qplib_ah, 929 true); 930 atomic_dec(&rdev->stats.res.ah_count); 931 bnxt_qplib_clean_qp(&qp->qplib_qp); 932 933 ibdev_dbg(&rdev->ibdev, "Destroy the shadow QP\n"); 934 rc = bnxt_qplib_destroy_qp(&rdev->qplib_res, &gsi_sqp->qplib_qp); 935 if (rc) { 936 ibdev_err(&rdev->ibdev, "Destroy Shadow QP failed"); 937 goto fail; 938 } 939 bnxt_qplib_free_qp_res(&rdev->qplib_res, &gsi_sqp->qplib_qp); 940 941 /* remove from active qp list */ 942 mutex_lock(&rdev->qp_lock); 943 list_del(&gsi_sqp->list); 944 mutex_unlock(&rdev->qp_lock); 945 atomic_dec(&rdev->stats.res.qp_count); 946 947 kfree(rdev->gsi_ctx.sqp_tbl); 948 kfree(gsi_sah); 949 kfree(gsi_sqp); 950 rdev->gsi_ctx.gsi_sqp = NULL; 951 rdev->gsi_ctx.gsi_sah = NULL; 952 rdev->gsi_ctx.sqp_tbl = NULL; 953 954 return 0; 955 fail: 956 return rc; 957 } 958 959 /* Queue Pairs */ 960 int bnxt_re_destroy_qp(struct ib_qp *ib_qp, struct ib_udata *udata) 961 { 962 struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 963 struct bnxt_qplib_qp *qplib_qp = &qp->qplib_qp; 964 struct bnxt_re_dev *rdev = qp->rdev; 965 struct bnxt_qplib_nq *scq_nq = NULL; 966 struct bnxt_qplib_nq *rcq_nq = NULL; 967 unsigned int flags; 968 int rc; 969 970 bnxt_qplib_flush_cqn_wq(&qp->qplib_qp); 971 972 rc = bnxt_qplib_destroy_qp(&rdev->qplib_res, &qp->qplib_qp); 973 if (rc) { 974 ibdev_err(&rdev->ibdev, "Failed to destroy HW QP"); 975 return rc; 976 } 977 978 if (rdma_is_kernel_res(&qp->ib_qp.res)) { 979 flags = bnxt_re_lock_cqs(qp); 980 bnxt_qplib_clean_qp(&qp->qplib_qp); 981 bnxt_re_unlock_cqs(qp, flags); 982 } 983 984 bnxt_qplib_free_qp_res(&rdev->qplib_res, &qp->qplib_qp); 985 986 if (ib_qp->qp_type == IB_QPT_GSI && rdev->gsi_ctx.gsi_sqp) { 987 rc = bnxt_re_destroy_gsi_sqp(qp); 988 if (rc) 989 return rc; 990 } 991 992 mutex_lock(&rdev->qp_lock); 993 list_del(&qp->list); 994 mutex_unlock(&rdev->qp_lock); 995 atomic_dec(&rdev->stats.res.qp_count); 996 if (qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_RC) 997 atomic_dec(&rdev->stats.res.rc_qp_count); 998 else if (qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_UD) 999 atomic_dec(&rdev->stats.res.ud_qp_count); 1000 1001 bnxt_re_debug_rem_qpinfo(rdev, qp); 1002 1003 ib_umem_release(qp->rumem); 1004 ib_umem_release(qp->sumem); 1005 1006 /* Flush all the entries of notification queue associated with 1007 * given qp. 1008 */ 1009 scq_nq = qplib_qp->scq->nq; 1010 rcq_nq = qplib_qp->rcq->nq; 1011 bnxt_re_synchronize_nq(scq_nq); 1012 if (scq_nq != rcq_nq) 1013 bnxt_re_synchronize_nq(rcq_nq); 1014 1015 return 0; 1016 } 1017 1018 static u8 __from_ib_qp_type(enum ib_qp_type type) 1019 { 1020 switch (type) { 1021 case IB_QPT_GSI: 1022 return CMDQ_CREATE_QP1_TYPE_GSI; 1023 case IB_QPT_RC: 1024 return CMDQ_CREATE_QP_TYPE_RC; 1025 case IB_QPT_UD: 1026 return CMDQ_CREATE_QP_TYPE_UD; 1027 default: 1028 return IB_QPT_MAX; 1029 } 1030 } 1031 1032 static u16 bnxt_re_setup_rwqe_size(struct bnxt_qplib_qp *qplqp, 1033 int rsge, int max) 1034 { 1035 if (qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) 1036 rsge = max; 1037 return bnxt_re_get_rwqe_size(rsge); 1038 } 1039 1040 static u16 bnxt_re_get_wqe_size(int ilsize, int nsge) 1041 { 1042 u16 wqe_size, calc_ils; 1043 1044 wqe_size = bnxt_re_get_swqe_size(nsge); 1045 if (ilsize) { 1046 calc_ils = sizeof(struct sq_send_hdr) + ilsize; 1047 wqe_size = max_t(u16, calc_ils, wqe_size); 1048 wqe_size = ALIGN(wqe_size, sizeof(struct sq_send_hdr)); 1049 } 1050 return wqe_size; 1051 } 1052 1053 static int bnxt_re_setup_swqe_size(struct bnxt_re_qp *qp, 1054 struct ib_qp_init_attr *init_attr) 1055 { 1056 struct bnxt_qplib_dev_attr *dev_attr; 1057 struct bnxt_qplib_qp *qplqp; 1058 struct bnxt_re_dev *rdev; 1059 struct bnxt_qplib_q *sq; 1060 int align, ilsize; 1061 1062 rdev = qp->rdev; 1063 qplqp = &qp->qplib_qp; 1064 sq = &qplqp->sq; 1065 dev_attr = &rdev->dev_attr; 1066 1067 align = sizeof(struct sq_send_hdr); 1068 ilsize = ALIGN(init_attr->cap.max_inline_data, align); 1069 1070 /* For gen p4 and gen p5 fixed wqe compatibility mode 1071 * wqe size is fixed to 128 bytes - ie 6 SGEs 1072 */ 1073 if (qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) { 1074 sq->wqe_size = bnxt_re_get_swqe_size(BNXT_STATIC_MAX_SGE); 1075 sq->max_sge = BNXT_STATIC_MAX_SGE; 1076 } else { 1077 sq->wqe_size = bnxt_re_get_wqe_size(ilsize, sq->max_sge); 1078 if (sq->wqe_size > bnxt_re_get_swqe_size(dev_attr->max_qp_sges)) 1079 return -EINVAL; 1080 } 1081 1082 if (init_attr->cap.max_inline_data) { 1083 qplqp->max_inline_data = sq->wqe_size - 1084 sizeof(struct sq_send_hdr); 1085 init_attr->cap.max_inline_data = qplqp->max_inline_data; 1086 } 1087 1088 return 0; 1089 } 1090 1091 static int bnxt_re_init_user_qp(struct bnxt_re_dev *rdev, struct bnxt_re_pd *pd, 1092 struct bnxt_re_qp *qp, struct bnxt_re_ucontext *cntx, 1093 struct bnxt_re_qp_req *ureq) 1094 { 1095 struct bnxt_qplib_qp *qplib_qp; 1096 int bytes = 0, psn_sz; 1097 struct ib_umem *umem; 1098 int psn_nume; 1099 1100 qplib_qp = &qp->qplib_qp; 1101 1102 bytes = (qplib_qp->sq.max_wqe * qplib_qp->sq.wqe_size); 1103 /* Consider mapping PSN search memory only for RC QPs. */ 1104 if (qplib_qp->type == CMDQ_CREATE_QP_TYPE_RC) { 1105 psn_sz = bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx) ? 1106 sizeof(struct sq_psn_search_ext) : 1107 sizeof(struct sq_psn_search); 1108 if (cntx && bnxt_re_is_var_size_supported(rdev, cntx)) { 1109 psn_nume = ureq->sq_slots; 1110 } else { 1111 psn_nume = (qplib_qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ? 1112 qplib_qp->sq.max_wqe : ((qplib_qp->sq.max_wqe * qplib_qp->sq.wqe_size) / 1113 sizeof(struct bnxt_qplib_sge)); 1114 } 1115 if (_is_host_msn_table(rdev->qplib_res.dattr->dev_cap_flags2)) 1116 psn_nume = roundup_pow_of_two(psn_nume); 1117 bytes += (psn_nume * psn_sz); 1118 } 1119 1120 bytes = PAGE_ALIGN(bytes); 1121 umem = ib_umem_get(&rdev->ibdev, ureq->qpsva, bytes, 1122 IB_ACCESS_LOCAL_WRITE); 1123 if (IS_ERR(umem)) 1124 return PTR_ERR(umem); 1125 1126 qp->sumem = umem; 1127 qplib_qp->sq.sg_info.umem = umem; 1128 qplib_qp->sq.sg_info.pgsize = PAGE_SIZE; 1129 qplib_qp->sq.sg_info.pgshft = PAGE_SHIFT; 1130 qplib_qp->qp_handle = ureq->qp_handle; 1131 1132 if (!qp->qplib_qp.srq) { 1133 bytes = (qplib_qp->rq.max_wqe * qplib_qp->rq.wqe_size); 1134 bytes = PAGE_ALIGN(bytes); 1135 umem = ib_umem_get(&rdev->ibdev, ureq->qprva, bytes, 1136 IB_ACCESS_LOCAL_WRITE); 1137 if (IS_ERR(umem)) 1138 goto rqfail; 1139 qp->rumem = umem; 1140 qplib_qp->rq.sg_info.umem = umem; 1141 qplib_qp->rq.sg_info.pgsize = PAGE_SIZE; 1142 qplib_qp->rq.sg_info.pgshft = PAGE_SHIFT; 1143 } 1144 1145 qplib_qp->dpi = &cntx->dpi; 1146 return 0; 1147 rqfail: 1148 ib_umem_release(qp->sumem); 1149 qp->sumem = NULL; 1150 memset(&qplib_qp->sq.sg_info, 0, sizeof(qplib_qp->sq.sg_info)); 1151 1152 return PTR_ERR(umem); 1153 } 1154 1155 static struct bnxt_re_ah *bnxt_re_create_shadow_qp_ah 1156 (struct bnxt_re_pd *pd, 1157 struct bnxt_qplib_res *qp1_res, 1158 struct bnxt_qplib_qp *qp1_qp) 1159 { 1160 struct bnxt_re_dev *rdev = pd->rdev; 1161 struct bnxt_re_ah *ah; 1162 union ib_gid sgid; 1163 int rc; 1164 1165 ah = kzalloc(sizeof(*ah), GFP_KERNEL); 1166 if (!ah) 1167 return NULL; 1168 1169 ah->rdev = rdev; 1170 ah->qplib_ah.pd = &pd->qplib_pd; 1171 1172 rc = bnxt_re_query_gid(&rdev->ibdev, 1, 0, &sgid); 1173 if (rc) 1174 goto fail; 1175 1176 /* supply the dgid data same as sgid */ 1177 memcpy(ah->qplib_ah.dgid.data, &sgid.raw, 1178 sizeof(union ib_gid)); 1179 ah->qplib_ah.sgid_index = 0; 1180 1181 ah->qplib_ah.traffic_class = 0; 1182 ah->qplib_ah.flow_label = 0; 1183 ah->qplib_ah.hop_limit = 1; 1184 ah->qplib_ah.sl = 0; 1185 /* Have DMAC same as SMAC */ 1186 ether_addr_copy(ah->qplib_ah.dmac, rdev->netdev->dev_addr); 1187 1188 rc = bnxt_qplib_create_ah(&rdev->qplib_res, &ah->qplib_ah, false); 1189 if (rc) { 1190 ibdev_err(&rdev->ibdev, 1191 "Failed to allocate HW AH for Shadow QP"); 1192 goto fail; 1193 } 1194 atomic_inc(&rdev->stats.res.ah_count); 1195 1196 return ah; 1197 1198 fail: 1199 kfree(ah); 1200 return NULL; 1201 } 1202 1203 static struct bnxt_re_qp *bnxt_re_create_shadow_qp 1204 (struct bnxt_re_pd *pd, 1205 struct bnxt_qplib_res *qp1_res, 1206 struct bnxt_qplib_qp *qp1_qp) 1207 { 1208 struct bnxt_re_dev *rdev = pd->rdev; 1209 struct bnxt_re_qp *qp; 1210 int rc; 1211 1212 qp = kzalloc(sizeof(*qp), GFP_KERNEL); 1213 if (!qp) 1214 return NULL; 1215 1216 qp->rdev = rdev; 1217 1218 /* Initialize the shadow QP structure from the QP1 values */ 1219 ether_addr_copy(qp->qplib_qp.smac, rdev->netdev->dev_addr); 1220 1221 qp->qplib_qp.pd = &pd->qplib_pd; 1222 qp->qplib_qp.qp_handle = (u64)(unsigned long)(&qp->qplib_qp); 1223 qp->qplib_qp.type = IB_QPT_UD; 1224 1225 qp->qplib_qp.max_inline_data = 0; 1226 qp->qplib_qp.sig_type = true; 1227 1228 /* Shadow QP SQ depth should be same as QP1 RQ depth */ 1229 qp->qplib_qp.sq.wqe_size = bnxt_re_get_wqe_size(0, 6); 1230 qp->qplib_qp.sq.max_wqe = qp1_qp->rq.max_wqe; 1231 qp->qplib_qp.sq.max_sw_wqe = qp1_qp->rq.max_wqe; 1232 qp->qplib_qp.sq.max_sge = 2; 1233 /* Q full delta can be 1 since it is internal QP */ 1234 qp->qplib_qp.sq.q_full_delta = 1; 1235 qp->qplib_qp.sq.sg_info.pgsize = PAGE_SIZE; 1236 qp->qplib_qp.sq.sg_info.pgshft = PAGE_SHIFT; 1237 1238 qp->qplib_qp.scq = qp1_qp->scq; 1239 qp->qplib_qp.rcq = qp1_qp->rcq; 1240 1241 qp->qplib_qp.rq.wqe_size = bnxt_re_get_rwqe_size(6); 1242 qp->qplib_qp.rq.max_wqe = qp1_qp->rq.max_wqe; 1243 qp->qplib_qp.rq.max_sw_wqe = qp1_qp->rq.max_wqe; 1244 qp->qplib_qp.rq.max_sge = qp1_qp->rq.max_sge; 1245 /* Q full delta can be 1 since it is internal QP */ 1246 qp->qplib_qp.rq.q_full_delta = 1; 1247 qp->qplib_qp.rq.sg_info.pgsize = PAGE_SIZE; 1248 qp->qplib_qp.rq.sg_info.pgshft = PAGE_SHIFT; 1249 1250 qp->qplib_qp.mtu = qp1_qp->mtu; 1251 1252 qp->qplib_qp.sq_hdr_buf_size = 0; 1253 qp->qplib_qp.rq_hdr_buf_size = BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV6; 1254 qp->qplib_qp.dpi = &rdev->dpi_privileged; 1255 1256 rc = bnxt_qplib_create_qp(qp1_res, &qp->qplib_qp); 1257 if (rc) 1258 goto fail; 1259 1260 spin_lock_init(&qp->sq_lock); 1261 INIT_LIST_HEAD(&qp->list); 1262 mutex_lock(&rdev->qp_lock); 1263 list_add_tail(&qp->list, &rdev->qp_list); 1264 atomic_inc(&rdev->stats.res.qp_count); 1265 mutex_unlock(&rdev->qp_lock); 1266 return qp; 1267 fail: 1268 kfree(qp); 1269 return NULL; 1270 } 1271 1272 static int bnxt_re_init_rq_attr(struct bnxt_re_qp *qp, 1273 struct ib_qp_init_attr *init_attr, 1274 struct bnxt_re_ucontext *uctx) 1275 { 1276 struct bnxt_qplib_dev_attr *dev_attr; 1277 struct bnxt_qplib_qp *qplqp; 1278 struct bnxt_re_dev *rdev; 1279 struct bnxt_qplib_q *rq; 1280 int entries; 1281 1282 rdev = qp->rdev; 1283 qplqp = &qp->qplib_qp; 1284 rq = &qplqp->rq; 1285 dev_attr = &rdev->dev_attr; 1286 1287 if (init_attr->srq) { 1288 struct bnxt_re_srq *srq; 1289 1290 srq = container_of(init_attr->srq, struct bnxt_re_srq, ib_srq); 1291 qplqp->srq = &srq->qplib_srq; 1292 rq->max_wqe = 0; 1293 } else { 1294 rq->max_sge = init_attr->cap.max_recv_sge; 1295 if (rq->max_sge > dev_attr->max_qp_sges) 1296 rq->max_sge = dev_attr->max_qp_sges; 1297 init_attr->cap.max_recv_sge = rq->max_sge; 1298 rq->wqe_size = bnxt_re_setup_rwqe_size(qplqp, rq->max_sge, 1299 dev_attr->max_qp_sges); 1300 /* Allocate 1 more than what's provided so posting max doesn't 1301 * mean empty. 1302 */ 1303 entries = bnxt_re_init_depth(init_attr->cap.max_recv_wr + 1, uctx); 1304 rq->max_wqe = min_t(u32, entries, dev_attr->max_qp_wqes + 1); 1305 rq->max_sw_wqe = rq->max_wqe; 1306 rq->q_full_delta = 0; 1307 rq->sg_info.pgsize = PAGE_SIZE; 1308 rq->sg_info.pgshft = PAGE_SHIFT; 1309 } 1310 1311 return 0; 1312 } 1313 1314 static void bnxt_re_adjust_gsi_rq_attr(struct bnxt_re_qp *qp) 1315 { 1316 struct bnxt_qplib_dev_attr *dev_attr; 1317 struct bnxt_qplib_qp *qplqp; 1318 struct bnxt_re_dev *rdev; 1319 1320 rdev = qp->rdev; 1321 qplqp = &qp->qplib_qp; 1322 dev_attr = &rdev->dev_attr; 1323 1324 if (!bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) { 1325 qplqp->rq.max_sge = dev_attr->max_qp_sges; 1326 if (qplqp->rq.max_sge > dev_attr->max_qp_sges) 1327 qplqp->rq.max_sge = dev_attr->max_qp_sges; 1328 qplqp->rq.max_sge = 6; 1329 } 1330 } 1331 1332 static int bnxt_re_init_sq_attr(struct bnxt_re_qp *qp, 1333 struct ib_qp_init_attr *init_attr, 1334 struct bnxt_re_ucontext *uctx, 1335 struct bnxt_re_qp_req *ureq) 1336 { 1337 struct bnxt_qplib_dev_attr *dev_attr; 1338 struct bnxt_qplib_qp *qplqp; 1339 struct bnxt_re_dev *rdev; 1340 struct bnxt_qplib_q *sq; 1341 int diff = 0; 1342 int entries; 1343 int rc; 1344 1345 rdev = qp->rdev; 1346 qplqp = &qp->qplib_qp; 1347 sq = &qplqp->sq; 1348 dev_attr = &rdev->dev_attr; 1349 1350 sq->max_sge = init_attr->cap.max_send_sge; 1351 entries = init_attr->cap.max_send_wr; 1352 if (uctx && qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE) { 1353 sq->max_wqe = ureq->sq_slots; 1354 sq->max_sw_wqe = ureq->sq_slots; 1355 sq->wqe_size = sizeof(struct sq_sge); 1356 } else { 1357 if (sq->max_sge > dev_attr->max_qp_sges) { 1358 sq->max_sge = dev_attr->max_qp_sges; 1359 init_attr->cap.max_send_sge = sq->max_sge; 1360 } 1361 1362 rc = bnxt_re_setup_swqe_size(qp, init_attr); 1363 if (rc) 1364 return rc; 1365 1366 /* Allocate 128 + 1 more than what's provided */ 1367 diff = (qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE) ? 1368 0 : BNXT_QPLIB_RESERVED_QP_WRS; 1369 entries = bnxt_re_init_depth(entries + diff + 1, uctx); 1370 sq->max_wqe = min_t(u32, entries, dev_attr->max_qp_wqes + diff + 1); 1371 if (qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE) 1372 sq->max_sw_wqe = bnxt_qplib_get_depth(sq, qplqp->wqe_mode, true); 1373 else 1374 sq->max_sw_wqe = sq->max_wqe; 1375 1376 } 1377 sq->q_full_delta = diff + 1; 1378 /* 1379 * Reserving one slot for Phantom WQE. Application can 1380 * post one extra entry in this case. But allowing this to avoid 1381 * unexpected Queue full condition 1382 */ 1383 qplqp->sq.q_full_delta -= 1; 1384 qplqp->sq.sg_info.pgsize = PAGE_SIZE; 1385 qplqp->sq.sg_info.pgshft = PAGE_SHIFT; 1386 1387 return 0; 1388 } 1389 1390 static void bnxt_re_adjust_gsi_sq_attr(struct bnxt_re_qp *qp, 1391 struct ib_qp_init_attr *init_attr, 1392 struct bnxt_re_ucontext *uctx) 1393 { 1394 struct bnxt_qplib_dev_attr *dev_attr; 1395 struct bnxt_qplib_qp *qplqp; 1396 struct bnxt_re_dev *rdev; 1397 int entries; 1398 1399 rdev = qp->rdev; 1400 qplqp = &qp->qplib_qp; 1401 dev_attr = &rdev->dev_attr; 1402 1403 if (!bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) { 1404 entries = bnxt_re_init_depth(init_attr->cap.max_send_wr + 1, uctx); 1405 qplqp->sq.max_wqe = min_t(u32, entries, 1406 dev_attr->max_qp_wqes + 1); 1407 qplqp->sq.q_full_delta = qplqp->sq.max_wqe - 1408 init_attr->cap.max_send_wr; 1409 qplqp->sq.max_sge++; /* Need one extra sge to put UD header */ 1410 if (qplqp->sq.max_sge > dev_attr->max_qp_sges) 1411 qplqp->sq.max_sge = dev_attr->max_qp_sges; 1412 } 1413 } 1414 1415 static int bnxt_re_init_qp_type(struct bnxt_re_dev *rdev, 1416 struct ib_qp_init_attr *init_attr) 1417 { 1418 struct bnxt_qplib_chip_ctx *chip_ctx; 1419 int qptype; 1420 1421 chip_ctx = rdev->chip_ctx; 1422 1423 qptype = __from_ib_qp_type(init_attr->qp_type); 1424 if (qptype == IB_QPT_MAX) { 1425 ibdev_err(&rdev->ibdev, "QP type 0x%x not supported", qptype); 1426 qptype = -EOPNOTSUPP; 1427 goto out; 1428 } 1429 1430 if (bnxt_qplib_is_chip_gen_p5_p7(chip_ctx) && 1431 init_attr->qp_type == IB_QPT_GSI) 1432 qptype = CMDQ_CREATE_QP_TYPE_GSI; 1433 out: 1434 return qptype; 1435 } 1436 1437 static int bnxt_re_init_qp_attr(struct bnxt_re_qp *qp, struct bnxt_re_pd *pd, 1438 struct ib_qp_init_attr *init_attr, 1439 struct bnxt_re_ucontext *uctx, 1440 struct bnxt_re_qp_req *ureq) 1441 { 1442 struct bnxt_qplib_dev_attr *dev_attr; 1443 struct bnxt_qplib_qp *qplqp; 1444 struct bnxt_re_dev *rdev; 1445 struct bnxt_re_cq *cq; 1446 int rc = 0, qptype; 1447 1448 rdev = qp->rdev; 1449 qplqp = &qp->qplib_qp; 1450 dev_attr = &rdev->dev_attr; 1451 1452 /* Setup misc params */ 1453 ether_addr_copy(qplqp->smac, rdev->netdev->dev_addr); 1454 qplqp->pd = &pd->qplib_pd; 1455 qplqp->qp_handle = (u64)qplqp; 1456 qplqp->max_inline_data = init_attr->cap.max_inline_data; 1457 qplqp->sig_type = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; 1458 qptype = bnxt_re_init_qp_type(rdev, init_attr); 1459 if (qptype < 0) { 1460 rc = qptype; 1461 goto out; 1462 } 1463 qplqp->type = (u8)qptype; 1464 qplqp->wqe_mode = bnxt_re_is_var_size_supported(rdev, uctx); 1465 if (init_attr->qp_type == IB_QPT_RC) { 1466 qplqp->max_rd_atomic = dev_attr->max_qp_rd_atom; 1467 qplqp->max_dest_rd_atomic = dev_attr->max_qp_init_rd_atom; 1468 } 1469 qplqp->mtu = ib_mtu_enum_to_int(iboe_get_mtu(rdev->netdev->mtu)); 1470 qplqp->dpi = &rdev->dpi_privileged; /* Doorbell page */ 1471 if (init_attr->create_flags) { 1472 ibdev_dbg(&rdev->ibdev, 1473 "QP create flags 0x%x not supported", 1474 init_attr->create_flags); 1475 return -EOPNOTSUPP; 1476 } 1477 1478 /* Setup CQs */ 1479 if (init_attr->send_cq) { 1480 cq = container_of(init_attr->send_cq, struct bnxt_re_cq, ib_cq); 1481 qplqp->scq = &cq->qplib_cq; 1482 qp->scq = cq; 1483 } 1484 1485 if (init_attr->recv_cq) { 1486 cq = container_of(init_attr->recv_cq, struct bnxt_re_cq, ib_cq); 1487 qplqp->rcq = &cq->qplib_cq; 1488 qp->rcq = cq; 1489 } 1490 1491 /* Setup RQ/SRQ */ 1492 rc = bnxt_re_init_rq_attr(qp, init_attr, uctx); 1493 if (rc) 1494 goto out; 1495 if (init_attr->qp_type == IB_QPT_GSI) 1496 bnxt_re_adjust_gsi_rq_attr(qp); 1497 1498 /* Setup SQ */ 1499 rc = bnxt_re_init_sq_attr(qp, init_attr, uctx, ureq); 1500 if (rc) 1501 goto out; 1502 if (init_attr->qp_type == IB_QPT_GSI) 1503 bnxt_re_adjust_gsi_sq_attr(qp, init_attr, uctx); 1504 1505 if (uctx) /* This will update DPI and qp_handle */ 1506 rc = bnxt_re_init_user_qp(rdev, pd, qp, uctx, ureq); 1507 out: 1508 return rc; 1509 } 1510 1511 static int bnxt_re_create_shadow_gsi(struct bnxt_re_qp *qp, 1512 struct bnxt_re_pd *pd) 1513 { 1514 struct bnxt_re_sqp_entries *sqp_tbl; 1515 struct bnxt_re_dev *rdev; 1516 struct bnxt_re_qp *sqp; 1517 struct bnxt_re_ah *sah; 1518 int rc = 0; 1519 1520 rdev = qp->rdev; 1521 /* Create a shadow QP to handle the QP1 traffic */ 1522 sqp_tbl = kcalloc(BNXT_RE_MAX_GSI_SQP_ENTRIES, sizeof(*sqp_tbl), 1523 GFP_KERNEL); 1524 if (!sqp_tbl) 1525 return -ENOMEM; 1526 rdev->gsi_ctx.sqp_tbl = sqp_tbl; 1527 1528 sqp = bnxt_re_create_shadow_qp(pd, &rdev->qplib_res, &qp->qplib_qp); 1529 if (!sqp) { 1530 rc = -ENODEV; 1531 ibdev_err(&rdev->ibdev, "Failed to create Shadow QP for QP1"); 1532 goto out; 1533 } 1534 rdev->gsi_ctx.gsi_sqp = sqp; 1535 1536 sqp->rcq = qp->rcq; 1537 sqp->scq = qp->scq; 1538 sah = bnxt_re_create_shadow_qp_ah(pd, &rdev->qplib_res, 1539 &qp->qplib_qp); 1540 if (!sah) { 1541 bnxt_qplib_destroy_qp(&rdev->qplib_res, 1542 &sqp->qplib_qp); 1543 rc = -ENODEV; 1544 ibdev_err(&rdev->ibdev, 1545 "Failed to create AH entry for ShadowQP"); 1546 goto out; 1547 } 1548 rdev->gsi_ctx.gsi_sah = sah; 1549 1550 return 0; 1551 out: 1552 kfree(sqp_tbl); 1553 return rc; 1554 } 1555 1556 static int bnxt_re_create_gsi_qp(struct bnxt_re_qp *qp, struct bnxt_re_pd *pd, 1557 struct ib_qp_init_attr *init_attr) 1558 { 1559 struct bnxt_re_dev *rdev; 1560 struct bnxt_qplib_qp *qplqp; 1561 int rc; 1562 1563 rdev = qp->rdev; 1564 qplqp = &qp->qplib_qp; 1565 1566 qplqp->rq_hdr_buf_size = BNXT_QPLIB_MAX_QP1_RQ_HDR_SIZE_V2; 1567 qplqp->sq_hdr_buf_size = BNXT_QPLIB_MAX_QP1_SQ_HDR_SIZE_V2; 1568 1569 rc = bnxt_qplib_create_qp1(&rdev->qplib_res, qplqp); 1570 if (rc) { 1571 ibdev_err(&rdev->ibdev, "create HW QP1 failed!"); 1572 goto out; 1573 } 1574 1575 rc = bnxt_re_create_shadow_gsi(qp, pd); 1576 out: 1577 return rc; 1578 } 1579 1580 static bool bnxt_re_test_qp_limits(struct bnxt_re_dev *rdev, 1581 struct ib_qp_init_attr *init_attr, 1582 struct bnxt_qplib_dev_attr *dev_attr) 1583 { 1584 bool rc = true; 1585 1586 if (init_attr->cap.max_send_wr > dev_attr->max_qp_wqes || 1587 init_attr->cap.max_recv_wr > dev_attr->max_qp_wqes || 1588 init_attr->cap.max_send_sge > dev_attr->max_qp_sges || 1589 init_attr->cap.max_recv_sge > dev_attr->max_qp_sges || 1590 init_attr->cap.max_inline_data > dev_attr->max_inline_data) { 1591 ibdev_err(&rdev->ibdev, 1592 "Create QP failed - max exceeded! 0x%x/0x%x 0x%x/0x%x 0x%x/0x%x 0x%x/0x%x 0x%x/0x%x", 1593 init_attr->cap.max_send_wr, dev_attr->max_qp_wqes, 1594 init_attr->cap.max_recv_wr, dev_attr->max_qp_wqes, 1595 init_attr->cap.max_send_sge, dev_attr->max_qp_sges, 1596 init_attr->cap.max_recv_sge, dev_attr->max_qp_sges, 1597 init_attr->cap.max_inline_data, 1598 dev_attr->max_inline_data); 1599 rc = false; 1600 } 1601 return rc; 1602 } 1603 1604 int bnxt_re_create_qp(struct ib_qp *ib_qp, struct ib_qp_init_attr *qp_init_attr, 1605 struct ib_udata *udata) 1606 { 1607 struct bnxt_qplib_dev_attr *dev_attr; 1608 struct bnxt_re_ucontext *uctx; 1609 struct bnxt_re_qp_req ureq; 1610 struct bnxt_re_dev *rdev; 1611 struct bnxt_re_pd *pd; 1612 struct bnxt_re_qp *qp; 1613 struct ib_pd *ib_pd; 1614 u32 active_qps; 1615 int rc; 1616 1617 ib_pd = ib_qp->pd; 1618 pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 1619 rdev = pd->rdev; 1620 dev_attr = &rdev->dev_attr; 1621 qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 1622 1623 uctx = rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx); 1624 if (udata) 1625 if (ib_copy_from_udata(&ureq, udata, min(udata->inlen, sizeof(ureq)))) 1626 return -EFAULT; 1627 1628 rc = bnxt_re_test_qp_limits(rdev, qp_init_attr, dev_attr); 1629 if (!rc) { 1630 rc = -EINVAL; 1631 goto fail; 1632 } 1633 1634 qp->rdev = rdev; 1635 rc = bnxt_re_init_qp_attr(qp, pd, qp_init_attr, uctx, &ureq); 1636 if (rc) 1637 goto fail; 1638 1639 if (qp_init_attr->qp_type == IB_QPT_GSI && 1640 !(bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx))) { 1641 rc = bnxt_re_create_gsi_qp(qp, pd, qp_init_attr); 1642 if (rc == -ENODEV) 1643 goto qp_destroy; 1644 if (rc) 1645 goto fail; 1646 } else { 1647 rc = bnxt_qplib_create_qp(&rdev->qplib_res, &qp->qplib_qp); 1648 if (rc) { 1649 ibdev_err(&rdev->ibdev, "Failed to create HW QP"); 1650 goto free_umem; 1651 } 1652 if (udata) { 1653 struct bnxt_re_qp_resp resp; 1654 1655 resp.qpid = qp->qplib_qp.id; 1656 resp.rsvd = 0; 1657 rc = ib_copy_to_udata(udata, &resp, sizeof(resp)); 1658 if (rc) { 1659 ibdev_err(&rdev->ibdev, "Failed to copy QP udata"); 1660 goto qp_destroy; 1661 } 1662 } 1663 } 1664 1665 qp->ib_qp.qp_num = qp->qplib_qp.id; 1666 if (qp_init_attr->qp_type == IB_QPT_GSI) 1667 rdev->gsi_ctx.gsi_qp = qp; 1668 spin_lock_init(&qp->sq_lock); 1669 spin_lock_init(&qp->rq_lock); 1670 INIT_LIST_HEAD(&qp->list); 1671 mutex_lock(&rdev->qp_lock); 1672 list_add_tail(&qp->list, &rdev->qp_list); 1673 mutex_unlock(&rdev->qp_lock); 1674 active_qps = atomic_inc_return(&rdev->stats.res.qp_count); 1675 if (active_qps > rdev->stats.res.qp_watermark) 1676 rdev->stats.res.qp_watermark = active_qps; 1677 if (qp_init_attr->qp_type == IB_QPT_RC) { 1678 active_qps = atomic_inc_return(&rdev->stats.res.rc_qp_count); 1679 if (active_qps > rdev->stats.res.rc_qp_watermark) 1680 rdev->stats.res.rc_qp_watermark = active_qps; 1681 } else if (qp_init_attr->qp_type == IB_QPT_UD) { 1682 active_qps = atomic_inc_return(&rdev->stats.res.ud_qp_count); 1683 if (active_qps > rdev->stats.res.ud_qp_watermark) 1684 rdev->stats.res.ud_qp_watermark = active_qps; 1685 } 1686 bnxt_re_debug_add_qpinfo(rdev, qp); 1687 1688 return 0; 1689 qp_destroy: 1690 bnxt_qplib_destroy_qp(&rdev->qplib_res, &qp->qplib_qp); 1691 free_umem: 1692 ib_umem_release(qp->rumem); 1693 ib_umem_release(qp->sumem); 1694 fail: 1695 return rc; 1696 } 1697 1698 static u8 __from_ib_qp_state(enum ib_qp_state state) 1699 { 1700 switch (state) { 1701 case IB_QPS_RESET: 1702 return CMDQ_MODIFY_QP_NEW_STATE_RESET; 1703 case IB_QPS_INIT: 1704 return CMDQ_MODIFY_QP_NEW_STATE_INIT; 1705 case IB_QPS_RTR: 1706 return CMDQ_MODIFY_QP_NEW_STATE_RTR; 1707 case IB_QPS_RTS: 1708 return CMDQ_MODIFY_QP_NEW_STATE_RTS; 1709 case IB_QPS_SQD: 1710 return CMDQ_MODIFY_QP_NEW_STATE_SQD; 1711 case IB_QPS_SQE: 1712 return CMDQ_MODIFY_QP_NEW_STATE_SQE; 1713 case IB_QPS_ERR: 1714 default: 1715 return CMDQ_MODIFY_QP_NEW_STATE_ERR; 1716 } 1717 } 1718 1719 static enum ib_qp_state __to_ib_qp_state(u8 state) 1720 { 1721 switch (state) { 1722 case CMDQ_MODIFY_QP_NEW_STATE_RESET: 1723 return IB_QPS_RESET; 1724 case CMDQ_MODIFY_QP_NEW_STATE_INIT: 1725 return IB_QPS_INIT; 1726 case CMDQ_MODIFY_QP_NEW_STATE_RTR: 1727 return IB_QPS_RTR; 1728 case CMDQ_MODIFY_QP_NEW_STATE_RTS: 1729 return IB_QPS_RTS; 1730 case CMDQ_MODIFY_QP_NEW_STATE_SQD: 1731 return IB_QPS_SQD; 1732 case CMDQ_MODIFY_QP_NEW_STATE_SQE: 1733 return IB_QPS_SQE; 1734 case CMDQ_MODIFY_QP_NEW_STATE_ERR: 1735 default: 1736 return IB_QPS_ERR; 1737 } 1738 } 1739 1740 static u32 __from_ib_mtu(enum ib_mtu mtu) 1741 { 1742 switch (mtu) { 1743 case IB_MTU_256: 1744 return CMDQ_MODIFY_QP_PATH_MTU_MTU_256; 1745 case IB_MTU_512: 1746 return CMDQ_MODIFY_QP_PATH_MTU_MTU_512; 1747 case IB_MTU_1024: 1748 return CMDQ_MODIFY_QP_PATH_MTU_MTU_1024; 1749 case IB_MTU_2048: 1750 return CMDQ_MODIFY_QP_PATH_MTU_MTU_2048; 1751 case IB_MTU_4096: 1752 return CMDQ_MODIFY_QP_PATH_MTU_MTU_4096; 1753 default: 1754 return CMDQ_MODIFY_QP_PATH_MTU_MTU_2048; 1755 } 1756 } 1757 1758 static enum ib_mtu __to_ib_mtu(u32 mtu) 1759 { 1760 switch (mtu & CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) { 1761 case CMDQ_MODIFY_QP_PATH_MTU_MTU_256: 1762 return IB_MTU_256; 1763 case CMDQ_MODIFY_QP_PATH_MTU_MTU_512: 1764 return IB_MTU_512; 1765 case CMDQ_MODIFY_QP_PATH_MTU_MTU_1024: 1766 return IB_MTU_1024; 1767 case CMDQ_MODIFY_QP_PATH_MTU_MTU_2048: 1768 return IB_MTU_2048; 1769 case CMDQ_MODIFY_QP_PATH_MTU_MTU_4096: 1770 return IB_MTU_4096; 1771 default: 1772 return IB_MTU_2048; 1773 } 1774 } 1775 1776 /* Shared Receive Queues */ 1777 int bnxt_re_destroy_srq(struct ib_srq *ib_srq, struct ib_udata *udata) 1778 { 1779 struct bnxt_re_srq *srq = container_of(ib_srq, struct bnxt_re_srq, 1780 ib_srq); 1781 struct bnxt_re_dev *rdev = srq->rdev; 1782 struct bnxt_qplib_srq *qplib_srq = &srq->qplib_srq; 1783 struct bnxt_qplib_nq *nq = NULL; 1784 1785 if (qplib_srq->cq) 1786 nq = qplib_srq->cq->nq; 1787 if (rdev->chip_ctx->modes.toggle_bits & BNXT_QPLIB_SRQ_TOGGLE_BIT) { 1788 free_page((unsigned long)srq->uctx_srq_page); 1789 hash_del(&srq->hash_entry); 1790 } 1791 bnxt_qplib_destroy_srq(&rdev->qplib_res, qplib_srq); 1792 ib_umem_release(srq->umem); 1793 atomic_dec(&rdev->stats.res.srq_count); 1794 if (nq) 1795 nq->budget--; 1796 return 0; 1797 } 1798 1799 static int bnxt_re_init_user_srq(struct bnxt_re_dev *rdev, 1800 struct bnxt_re_pd *pd, 1801 struct bnxt_re_srq *srq, 1802 struct ib_udata *udata) 1803 { 1804 struct bnxt_re_srq_req ureq; 1805 struct bnxt_qplib_srq *qplib_srq = &srq->qplib_srq; 1806 struct ib_umem *umem; 1807 int bytes = 0; 1808 struct bnxt_re_ucontext *cntx = rdma_udata_to_drv_context( 1809 udata, struct bnxt_re_ucontext, ib_uctx); 1810 1811 if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) 1812 return -EFAULT; 1813 1814 bytes = (qplib_srq->max_wqe * qplib_srq->wqe_size); 1815 bytes = PAGE_ALIGN(bytes); 1816 umem = ib_umem_get(&rdev->ibdev, ureq.srqva, bytes, 1817 IB_ACCESS_LOCAL_WRITE); 1818 if (IS_ERR(umem)) 1819 return PTR_ERR(umem); 1820 1821 srq->umem = umem; 1822 qplib_srq->sg_info.umem = umem; 1823 qplib_srq->sg_info.pgsize = PAGE_SIZE; 1824 qplib_srq->sg_info.pgshft = PAGE_SHIFT; 1825 qplib_srq->srq_handle = ureq.srq_handle; 1826 qplib_srq->dpi = &cntx->dpi; 1827 1828 return 0; 1829 } 1830 1831 int bnxt_re_create_srq(struct ib_srq *ib_srq, 1832 struct ib_srq_init_attr *srq_init_attr, 1833 struct ib_udata *udata) 1834 { 1835 struct bnxt_qplib_dev_attr *dev_attr; 1836 struct bnxt_qplib_nq *nq = NULL; 1837 struct bnxt_re_ucontext *uctx; 1838 struct bnxt_re_dev *rdev; 1839 struct bnxt_re_srq *srq; 1840 struct bnxt_re_pd *pd; 1841 struct ib_pd *ib_pd; 1842 u32 active_srqs; 1843 int rc, entries; 1844 1845 ib_pd = ib_srq->pd; 1846 pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 1847 rdev = pd->rdev; 1848 dev_attr = &rdev->dev_attr; 1849 srq = container_of(ib_srq, struct bnxt_re_srq, ib_srq); 1850 1851 if (srq_init_attr->attr.max_wr >= dev_attr->max_srq_wqes) { 1852 ibdev_err(&rdev->ibdev, "Create CQ failed - max exceeded"); 1853 rc = -EINVAL; 1854 goto exit; 1855 } 1856 1857 if (srq_init_attr->srq_type != IB_SRQT_BASIC) { 1858 rc = -EOPNOTSUPP; 1859 goto exit; 1860 } 1861 1862 uctx = rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx); 1863 srq->rdev = rdev; 1864 srq->qplib_srq.pd = &pd->qplib_pd; 1865 srq->qplib_srq.dpi = &rdev->dpi_privileged; 1866 /* Allocate 1 more than what's provided so posting max doesn't 1867 * mean empty 1868 */ 1869 entries = bnxt_re_init_depth(srq_init_attr->attr.max_wr + 1, uctx); 1870 if (entries > dev_attr->max_srq_wqes + 1) 1871 entries = dev_attr->max_srq_wqes + 1; 1872 srq->qplib_srq.max_wqe = entries; 1873 1874 srq->qplib_srq.max_sge = srq_init_attr->attr.max_sge; 1875 /* 128 byte wqe size for SRQ . So use max sges */ 1876 srq->qplib_srq.wqe_size = bnxt_re_get_rwqe_size(dev_attr->max_srq_sges); 1877 srq->qplib_srq.threshold = srq_init_attr->attr.srq_limit; 1878 srq->srq_limit = srq_init_attr->attr.srq_limit; 1879 srq->qplib_srq.eventq_hw_ring_id = rdev->nqr->nq[0].ring_id; 1880 nq = &rdev->nqr->nq[0]; 1881 1882 if (udata) { 1883 rc = bnxt_re_init_user_srq(rdev, pd, srq, udata); 1884 if (rc) 1885 goto fail; 1886 } 1887 1888 rc = bnxt_qplib_create_srq(&rdev->qplib_res, &srq->qplib_srq); 1889 if (rc) { 1890 ibdev_err(&rdev->ibdev, "Create HW SRQ failed!"); 1891 goto fail; 1892 } 1893 1894 if (udata) { 1895 struct bnxt_re_srq_resp resp = {}; 1896 1897 resp.srqid = srq->qplib_srq.id; 1898 if (rdev->chip_ctx->modes.toggle_bits & BNXT_QPLIB_SRQ_TOGGLE_BIT) { 1899 hash_add(rdev->srq_hash, &srq->hash_entry, srq->qplib_srq.id); 1900 srq->uctx_srq_page = (void *)get_zeroed_page(GFP_KERNEL); 1901 if (!srq->uctx_srq_page) { 1902 rc = -ENOMEM; 1903 goto fail; 1904 } 1905 resp.comp_mask |= BNXT_RE_SRQ_TOGGLE_PAGE_SUPPORT; 1906 } 1907 rc = ib_copy_to_udata(udata, &resp, sizeof(resp)); 1908 if (rc) { 1909 ibdev_err(&rdev->ibdev, "SRQ copy to udata failed!"); 1910 bnxt_qplib_destroy_srq(&rdev->qplib_res, 1911 &srq->qplib_srq); 1912 goto fail; 1913 } 1914 } 1915 if (nq) 1916 nq->budget++; 1917 active_srqs = atomic_inc_return(&rdev->stats.res.srq_count); 1918 if (active_srqs > rdev->stats.res.srq_watermark) 1919 rdev->stats.res.srq_watermark = active_srqs; 1920 spin_lock_init(&srq->lock); 1921 1922 return 0; 1923 1924 fail: 1925 ib_umem_release(srq->umem); 1926 exit: 1927 return rc; 1928 } 1929 1930 int bnxt_re_modify_srq(struct ib_srq *ib_srq, struct ib_srq_attr *srq_attr, 1931 enum ib_srq_attr_mask srq_attr_mask, 1932 struct ib_udata *udata) 1933 { 1934 struct bnxt_re_srq *srq = container_of(ib_srq, struct bnxt_re_srq, 1935 ib_srq); 1936 struct bnxt_re_dev *rdev = srq->rdev; 1937 int rc; 1938 1939 switch (srq_attr_mask) { 1940 case IB_SRQ_MAX_WR: 1941 /* SRQ resize is not supported */ 1942 return -EINVAL; 1943 case IB_SRQ_LIMIT: 1944 /* Change the SRQ threshold */ 1945 if (srq_attr->srq_limit > srq->qplib_srq.max_wqe) 1946 return -EINVAL; 1947 1948 srq->qplib_srq.threshold = srq_attr->srq_limit; 1949 rc = bnxt_qplib_modify_srq(&rdev->qplib_res, &srq->qplib_srq); 1950 if (rc) { 1951 ibdev_err(&rdev->ibdev, "Modify HW SRQ failed!"); 1952 return rc; 1953 } 1954 /* On success, update the shadow */ 1955 srq->srq_limit = srq_attr->srq_limit; 1956 /* No need to Build and send response back to udata */ 1957 return 0; 1958 default: 1959 ibdev_err(&rdev->ibdev, 1960 "Unsupported srq_attr_mask 0x%x", srq_attr_mask); 1961 return -EINVAL; 1962 } 1963 } 1964 1965 int bnxt_re_query_srq(struct ib_srq *ib_srq, struct ib_srq_attr *srq_attr) 1966 { 1967 struct bnxt_re_srq *srq = container_of(ib_srq, struct bnxt_re_srq, 1968 ib_srq); 1969 struct bnxt_re_srq tsrq; 1970 struct bnxt_re_dev *rdev = srq->rdev; 1971 int rc; 1972 1973 /* Get live SRQ attr */ 1974 tsrq.qplib_srq.id = srq->qplib_srq.id; 1975 rc = bnxt_qplib_query_srq(&rdev->qplib_res, &tsrq.qplib_srq); 1976 if (rc) { 1977 ibdev_err(&rdev->ibdev, "Query HW SRQ failed!"); 1978 return rc; 1979 } 1980 srq_attr->max_wr = srq->qplib_srq.max_wqe; 1981 srq_attr->max_sge = srq->qplib_srq.max_sge; 1982 srq_attr->srq_limit = tsrq.qplib_srq.threshold; 1983 1984 return 0; 1985 } 1986 1987 int bnxt_re_post_srq_recv(struct ib_srq *ib_srq, const struct ib_recv_wr *wr, 1988 const struct ib_recv_wr **bad_wr) 1989 { 1990 struct bnxt_re_srq *srq = container_of(ib_srq, struct bnxt_re_srq, 1991 ib_srq); 1992 struct bnxt_qplib_swqe wqe; 1993 unsigned long flags; 1994 int rc = 0; 1995 1996 spin_lock_irqsave(&srq->lock, flags); 1997 while (wr) { 1998 /* Transcribe each ib_recv_wr to qplib_swqe */ 1999 wqe.num_sge = wr->num_sge; 2000 bnxt_re_build_sgl(wr->sg_list, wqe.sg_list, wr->num_sge); 2001 wqe.wr_id = wr->wr_id; 2002 wqe.type = BNXT_QPLIB_SWQE_TYPE_RECV; 2003 2004 rc = bnxt_qplib_post_srq_recv(&srq->qplib_srq, &wqe); 2005 if (rc) { 2006 *bad_wr = wr; 2007 break; 2008 } 2009 wr = wr->next; 2010 } 2011 spin_unlock_irqrestore(&srq->lock, flags); 2012 2013 return rc; 2014 } 2015 static int bnxt_re_modify_shadow_qp(struct bnxt_re_dev *rdev, 2016 struct bnxt_re_qp *qp1_qp, 2017 int qp_attr_mask) 2018 { 2019 struct bnxt_re_qp *qp = rdev->gsi_ctx.gsi_sqp; 2020 int rc; 2021 2022 if (qp_attr_mask & IB_QP_STATE) { 2023 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_STATE; 2024 qp->qplib_qp.state = qp1_qp->qplib_qp.state; 2025 } 2026 if (qp_attr_mask & IB_QP_PKEY_INDEX) { 2027 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PKEY; 2028 qp->qplib_qp.pkey_index = qp1_qp->qplib_qp.pkey_index; 2029 } 2030 2031 if (qp_attr_mask & IB_QP_QKEY) { 2032 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_QKEY; 2033 /* Using a Random QKEY */ 2034 qp->qplib_qp.qkey = 0x81818181; 2035 } 2036 if (qp_attr_mask & IB_QP_SQ_PSN) { 2037 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN; 2038 qp->qplib_qp.sq.psn = qp1_qp->qplib_qp.sq.psn; 2039 } 2040 2041 rc = bnxt_qplib_modify_qp(&rdev->qplib_res, &qp->qplib_qp); 2042 if (rc) 2043 ibdev_err(&rdev->ibdev, "Failed to modify Shadow QP for QP1"); 2044 return rc; 2045 } 2046 2047 int bnxt_re_modify_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr, 2048 int qp_attr_mask, struct ib_udata *udata) 2049 { 2050 struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 2051 struct bnxt_re_dev *rdev = qp->rdev; 2052 struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; 2053 enum ib_qp_state curr_qp_state, new_qp_state; 2054 int rc, entries; 2055 unsigned int flags; 2056 u8 nw_type; 2057 2058 if (qp_attr_mask & ~IB_QP_ATTR_STANDARD_BITS) 2059 return -EOPNOTSUPP; 2060 2061 qp->qplib_qp.modify_flags = 0; 2062 if (qp_attr_mask & IB_QP_STATE) { 2063 curr_qp_state = __to_ib_qp_state(qp->qplib_qp.cur_qp_state); 2064 new_qp_state = qp_attr->qp_state; 2065 if (!ib_modify_qp_is_ok(curr_qp_state, new_qp_state, 2066 ib_qp->qp_type, qp_attr_mask)) { 2067 ibdev_err(&rdev->ibdev, 2068 "Invalid attribute mask: %#x specified ", 2069 qp_attr_mask); 2070 ibdev_err(&rdev->ibdev, 2071 "for qpn: %#x type: %#x", 2072 ib_qp->qp_num, ib_qp->qp_type); 2073 ibdev_err(&rdev->ibdev, 2074 "curr_qp_state=0x%x, new_qp_state=0x%x\n", 2075 curr_qp_state, new_qp_state); 2076 return -EINVAL; 2077 } 2078 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_STATE; 2079 qp->qplib_qp.state = __from_ib_qp_state(qp_attr->qp_state); 2080 2081 if (!qp->sumem && 2082 qp->qplib_qp.state == CMDQ_MODIFY_QP_NEW_STATE_ERR) { 2083 ibdev_dbg(&rdev->ibdev, 2084 "Move QP = %p to flush list\n", qp); 2085 flags = bnxt_re_lock_cqs(qp); 2086 bnxt_qplib_add_flush_qp(&qp->qplib_qp); 2087 bnxt_re_unlock_cqs(qp, flags); 2088 } 2089 if (!qp->sumem && 2090 qp->qplib_qp.state == CMDQ_MODIFY_QP_NEW_STATE_RESET) { 2091 ibdev_dbg(&rdev->ibdev, 2092 "Move QP = %p out of flush list\n", qp); 2093 flags = bnxt_re_lock_cqs(qp); 2094 bnxt_qplib_clean_qp(&qp->qplib_qp); 2095 bnxt_re_unlock_cqs(qp, flags); 2096 } 2097 } 2098 if (qp_attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) { 2099 qp->qplib_qp.modify_flags |= 2100 CMDQ_MODIFY_QP_MODIFY_MASK_EN_SQD_ASYNC_NOTIFY; 2101 qp->qplib_qp.en_sqd_async_notify = true; 2102 } 2103 if (qp_attr_mask & IB_QP_ACCESS_FLAGS) { 2104 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS; 2105 qp->qplib_qp.access = 2106 __qp_access_flags_from_ib(qp->qplib_qp.cctx, 2107 qp_attr->qp_access_flags); 2108 /* LOCAL_WRITE access must be set to allow RC receive */ 2109 qp->qplib_qp.access |= CMDQ_MODIFY_QP_ACCESS_LOCAL_WRITE; 2110 } 2111 if (qp_attr_mask & IB_QP_PKEY_INDEX) { 2112 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PKEY; 2113 qp->qplib_qp.pkey_index = qp_attr->pkey_index; 2114 } 2115 if (qp_attr_mask & IB_QP_QKEY) { 2116 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_QKEY; 2117 qp->qplib_qp.qkey = qp_attr->qkey; 2118 } 2119 if (qp_attr_mask & IB_QP_AV) { 2120 const struct ib_global_route *grh = 2121 rdma_ah_read_grh(&qp_attr->ah_attr); 2122 const struct ib_gid_attr *sgid_attr; 2123 struct bnxt_re_gid_ctx *ctx; 2124 2125 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_DGID | 2126 CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL | 2127 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX | 2128 CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT | 2129 CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS | 2130 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC | 2131 CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID; 2132 memcpy(qp->qplib_qp.ah.dgid.data, grh->dgid.raw, 2133 sizeof(qp->qplib_qp.ah.dgid.data)); 2134 qp->qplib_qp.ah.flow_label = grh->flow_label; 2135 sgid_attr = grh->sgid_attr; 2136 /* Get the HW context of the GID. The reference 2137 * of GID table entry is already taken by the caller. 2138 */ 2139 ctx = rdma_read_gid_hw_context(sgid_attr); 2140 qp->qplib_qp.ah.sgid_index = ctx->idx; 2141 qp->qplib_qp.ah.host_sgid_index = grh->sgid_index; 2142 qp->qplib_qp.ah.hop_limit = grh->hop_limit; 2143 qp->qplib_qp.ah.traffic_class = grh->traffic_class >> 2; 2144 qp->qplib_qp.ah.sl = rdma_ah_get_sl(&qp_attr->ah_attr); 2145 ether_addr_copy(qp->qplib_qp.ah.dmac, 2146 qp_attr->ah_attr.roce.dmac); 2147 2148 rc = rdma_read_gid_l2_fields(sgid_attr, NULL, 2149 &qp->qplib_qp.smac[0]); 2150 if (rc) 2151 return rc; 2152 2153 nw_type = rdma_gid_attr_network_type(sgid_attr); 2154 switch (nw_type) { 2155 case RDMA_NETWORK_IPV4: 2156 qp->qplib_qp.nw_type = 2157 CMDQ_MODIFY_QP_NETWORK_TYPE_ROCEV2_IPV4; 2158 break; 2159 case RDMA_NETWORK_IPV6: 2160 qp->qplib_qp.nw_type = 2161 CMDQ_MODIFY_QP_NETWORK_TYPE_ROCEV2_IPV6; 2162 break; 2163 default: 2164 qp->qplib_qp.nw_type = 2165 CMDQ_MODIFY_QP_NETWORK_TYPE_ROCEV1; 2166 break; 2167 } 2168 } 2169 2170 if (qp_attr_mask & IB_QP_PATH_MTU) { 2171 qp->qplib_qp.modify_flags |= 2172 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU; 2173 qp->qplib_qp.path_mtu = __from_ib_mtu(qp_attr->path_mtu); 2174 qp->qplib_qp.mtu = ib_mtu_enum_to_int(qp_attr->path_mtu); 2175 } else if (qp_attr->qp_state == IB_QPS_RTR) { 2176 qp->qplib_qp.modify_flags |= 2177 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU; 2178 qp->qplib_qp.path_mtu = 2179 __from_ib_mtu(iboe_get_mtu(rdev->netdev->mtu)); 2180 qp->qplib_qp.mtu = 2181 ib_mtu_enum_to_int(iboe_get_mtu(rdev->netdev->mtu)); 2182 } 2183 2184 if (qp_attr_mask & IB_QP_TIMEOUT) { 2185 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT; 2186 qp->qplib_qp.timeout = qp_attr->timeout; 2187 } 2188 if (qp_attr_mask & IB_QP_RETRY_CNT) { 2189 qp->qplib_qp.modify_flags |= 2190 CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT; 2191 qp->qplib_qp.retry_cnt = qp_attr->retry_cnt; 2192 } 2193 if (qp_attr_mask & IB_QP_RNR_RETRY) { 2194 qp->qplib_qp.modify_flags |= 2195 CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY; 2196 qp->qplib_qp.rnr_retry = qp_attr->rnr_retry; 2197 } 2198 if (qp_attr_mask & IB_QP_MIN_RNR_TIMER) { 2199 qp->qplib_qp.modify_flags |= 2200 CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER; 2201 qp->qplib_qp.min_rnr_timer = qp_attr->min_rnr_timer; 2202 } 2203 if (qp_attr_mask & IB_QP_RQ_PSN) { 2204 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN; 2205 qp->qplib_qp.rq.psn = qp_attr->rq_psn; 2206 } 2207 if (qp_attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { 2208 qp->qplib_qp.modify_flags |= 2209 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC; 2210 /* Cap the max_rd_atomic to device max */ 2211 qp->qplib_qp.max_rd_atomic = min_t(u32, qp_attr->max_rd_atomic, 2212 dev_attr->max_qp_rd_atom); 2213 } 2214 if (qp_attr_mask & IB_QP_SQ_PSN) { 2215 qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN; 2216 qp->qplib_qp.sq.psn = qp_attr->sq_psn; 2217 } 2218 if (qp_attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { 2219 if (qp_attr->max_dest_rd_atomic > 2220 dev_attr->max_qp_init_rd_atom) { 2221 ibdev_err(&rdev->ibdev, 2222 "max_dest_rd_atomic requested%d is > dev_max%d", 2223 qp_attr->max_dest_rd_atomic, 2224 dev_attr->max_qp_init_rd_atom); 2225 return -EINVAL; 2226 } 2227 2228 qp->qplib_qp.modify_flags |= 2229 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC; 2230 qp->qplib_qp.max_dest_rd_atomic = qp_attr->max_dest_rd_atomic; 2231 } 2232 if (qp_attr_mask & IB_QP_CAP) { 2233 struct bnxt_re_ucontext *uctx = 2234 rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx); 2235 2236 qp->qplib_qp.modify_flags |= 2237 CMDQ_MODIFY_QP_MODIFY_MASK_SQ_SIZE | 2238 CMDQ_MODIFY_QP_MODIFY_MASK_RQ_SIZE | 2239 CMDQ_MODIFY_QP_MODIFY_MASK_SQ_SGE | 2240 CMDQ_MODIFY_QP_MODIFY_MASK_RQ_SGE | 2241 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_INLINE_DATA; 2242 if ((qp_attr->cap.max_send_wr >= dev_attr->max_qp_wqes) || 2243 (qp_attr->cap.max_recv_wr >= dev_attr->max_qp_wqes) || 2244 (qp_attr->cap.max_send_sge >= dev_attr->max_qp_sges) || 2245 (qp_attr->cap.max_recv_sge >= dev_attr->max_qp_sges) || 2246 (qp_attr->cap.max_inline_data >= 2247 dev_attr->max_inline_data)) { 2248 ibdev_err(&rdev->ibdev, 2249 "Create QP failed - max exceeded"); 2250 return -EINVAL; 2251 } 2252 entries = bnxt_re_init_depth(qp_attr->cap.max_send_wr, uctx); 2253 qp->qplib_qp.sq.max_wqe = min_t(u32, entries, 2254 dev_attr->max_qp_wqes + 1); 2255 qp->qplib_qp.sq.q_full_delta = qp->qplib_qp.sq.max_wqe - 2256 qp_attr->cap.max_send_wr; 2257 /* 2258 * Reserving one slot for Phantom WQE. Some application can 2259 * post one extra entry in this case. Allowing this to avoid 2260 * unexpected Queue full condition 2261 */ 2262 qp->qplib_qp.sq.q_full_delta -= 1; 2263 qp->qplib_qp.sq.max_sge = qp_attr->cap.max_send_sge; 2264 if (qp->qplib_qp.rq.max_wqe) { 2265 entries = bnxt_re_init_depth(qp_attr->cap.max_recv_wr, uctx); 2266 qp->qplib_qp.rq.max_wqe = 2267 min_t(u32, entries, dev_attr->max_qp_wqes + 1); 2268 qp->qplib_qp.rq.max_sw_wqe = qp->qplib_qp.rq.max_wqe; 2269 qp->qplib_qp.rq.q_full_delta = qp->qplib_qp.rq.max_wqe - 2270 qp_attr->cap.max_recv_wr; 2271 qp->qplib_qp.rq.max_sge = qp_attr->cap.max_recv_sge; 2272 } else { 2273 /* SRQ was used prior, just ignore the RQ caps */ 2274 } 2275 } 2276 if (qp_attr_mask & IB_QP_DEST_QPN) { 2277 qp->qplib_qp.modify_flags |= 2278 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID; 2279 qp->qplib_qp.dest_qpn = qp_attr->dest_qp_num; 2280 } 2281 rc = bnxt_qplib_modify_qp(&rdev->qplib_res, &qp->qplib_qp); 2282 if (rc) { 2283 ibdev_err(&rdev->ibdev, "Failed to modify HW QP"); 2284 return rc; 2285 } 2286 if (ib_qp->qp_type == IB_QPT_GSI && rdev->gsi_ctx.gsi_sqp) 2287 rc = bnxt_re_modify_shadow_qp(rdev, qp, qp_attr_mask); 2288 return rc; 2289 } 2290 2291 int bnxt_re_query_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr, 2292 int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr) 2293 { 2294 struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 2295 struct bnxt_re_dev *rdev = qp->rdev; 2296 struct bnxt_qplib_qp *qplib_qp; 2297 int rc; 2298 2299 qplib_qp = kzalloc(sizeof(*qplib_qp), GFP_KERNEL); 2300 if (!qplib_qp) 2301 return -ENOMEM; 2302 2303 qplib_qp->id = qp->qplib_qp.id; 2304 qplib_qp->ah.host_sgid_index = qp->qplib_qp.ah.host_sgid_index; 2305 2306 rc = bnxt_qplib_query_qp(&rdev->qplib_res, qplib_qp); 2307 if (rc) { 2308 ibdev_err(&rdev->ibdev, "Failed to query HW QP"); 2309 goto out; 2310 } 2311 qp_attr->qp_state = __to_ib_qp_state(qplib_qp->state); 2312 qp_attr->cur_qp_state = __to_ib_qp_state(qplib_qp->cur_qp_state); 2313 qp_attr->en_sqd_async_notify = qplib_qp->en_sqd_async_notify ? 1 : 0; 2314 qp_attr->qp_access_flags = __qp_access_flags_to_ib(qp->qplib_qp.cctx, 2315 qplib_qp->access); 2316 qp_attr->pkey_index = qplib_qp->pkey_index; 2317 qp_attr->qkey = qplib_qp->qkey; 2318 qp_attr->ah_attr.type = RDMA_AH_ATTR_TYPE_ROCE; 2319 rdma_ah_set_grh(&qp_attr->ah_attr, NULL, qplib_qp->ah.flow_label, 2320 qplib_qp->ah.host_sgid_index, 2321 qplib_qp->ah.hop_limit, 2322 qplib_qp->ah.traffic_class); 2323 rdma_ah_set_dgid_raw(&qp_attr->ah_attr, qplib_qp->ah.dgid.data); 2324 rdma_ah_set_sl(&qp_attr->ah_attr, qplib_qp->ah.sl); 2325 ether_addr_copy(qp_attr->ah_attr.roce.dmac, qplib_qp->ah.dmac); 2326 qp_attr->path_mtu = __to_ib_mtu(qplib_qp->path_mtu); 2327 qp_attr->timeout = qplib_qp->timeout; 2328 qp_attr->retry_cnt = qplib_qp->retry_cnt; 2329 qp_attr->rnr_retry = qplib_qp->rnr_retry; 2330 qp_attr->min_rnr_timer = qplib_qp->min_rnr_timer; 2331 qp_attr->rq_psn = qplib_qp->rq.psn; 2332 qp_attr->max_rd_atomic = qplib_qp->max_rd_atomic; 2333 qp_attr->sq_psn = qplib_qp->sq.psn; 2334 qp_attr->max_dest_rd_atomic = qplib_qp->max_dest_rd_atomic; 2335 qp_init_attr->sq_sig_type = qplib_qp->sig_type ? IB_SIGNAL_ALL_WR : 2336 IB_SIGNAL_REQ_WR; 2337 qp_attr->dest_qp_num = qplib_qp->dest_qpn; 2338 2339 qp_attr->cap.max_send_wr = qp->qplib_qp.sq.max_wqe; 2340 qp_attr->cap.max_send_sge = qp->qplib_qp.sq.max_sge; 2341 qp_attr->cap.max_recv_wr = qp->qplib_qp.rq.max_wqe; 2342 qp_attr->cap.max_recv_sge = qp->qplib_qp.rq.max_sge; 2343 qp_attr->cap.max_inline_data = qp->qplib_qp.max_inline_data; 2344 qp_init_attr->cap = qp_attr->cap; 2345 2346 out: 2347 kfree(qplib_qp); 2348 return rc; 2349 } 2350 2351 /* Routine for sending QP1 packets for RoCE V1 an V2 2352 */ 2353 static int bnxt_re_build_qp1_send_v2(struct bnxt_re_qp *qp, 2354 const struct ib_send_wr *wr, 2355 struct bnxt_qplib_swqe *wqe, 2356 int payload_size) 2357 { 2358 struct bnxt_re_ah *ah = container_of(ud_wr(wr)->ah, struct bnxt_re_ah, 2359 ib_ah); 2360 struct bnxt_qplib_ah *qplib_ah = &ah->qplib_ah; 2361 const struct ib_gid_attr *sgid_attr = ah->ib_ah.sgid_attr; 2362 struct bnxt_qplib_sge sge; 2363 u8 nw_type; 2364 u16 ether_type; 2365 union ib_gid dgid; 2366 bool is_eth = false; 2367 bool is_vlan = false; 2368 bool is_grh = false; 2369 bool is_udp = false; 2370 u8 ip_version = 0; 2371 u16 vlan_id = 0xFFFF; 2372 void *buf; 2373 int i, rc; 2374 2375 memset(&qp->qp1_hdr, 0, sizeof(qp->qp1_hdr)); 2376 2377 rc = rdma_read_gid_l2_fields(sgid_attr, &vlan_id, NULL); 2378 if (rc) 2379 return rc; 2380 2381 /* Get network header type for this GID */ 2382 nw_type = rdma_gid_attr_network_type(sgid_attr); 2383 switch (nw_type) { 2384 case RDMA_NETWORK_IPV4: 2385 nw_type = BNXT_RE_ROCEV2_IPV4_PACKET; 2386 break; 2387 case RDMA_NETWORK_IPV6: 2388 nw_type = BNXT_RE_ROCEV2_IPV6_PACKET; 2389 break; 2390 default: 2391 nw_type = BNXT_RE_ROCE_V1_PACKET; 2392 break; 2393 } 2394 memcpy(&dgid.raw, &qplib_ah->dgid, 16); 2395 is_udp = sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP; 2396 if (is_udp) { 2397 if (ipv6_addr_v4mapped((struct in6_addr *)&sgid_attr->gid)) { 2398 ip_version = 4; 2399 ether_type = ETH_P_IP; 2400 } else { 2401 ip_version = 6; 2402 ether_type = ETH_P_IPV6; 2403 } 2404 is_grh = false; 2405 } else { 2406 ether_type = ETH_P_IBOE; 2407 is_grh = true; 2408 } 2409 2410 is_eth = true; 2411 is_vlan = vlan_id && (vlan_id < 0x1000); 2412 2413 ib_ud_header_init(payload_size, !is_eth, is_eth, is_vlan, is_grh, 2414 ip_version, is_udp, 0, &qp->qp1_hdr); 2415 2416 /* ETH */ 2417 ether_addr_copy(qp->qp1_hdr.eth.dmac_h, ah->qplib_ah.dmac); 2418 ether_addr_copy(qp->qp1_hdr.eth.smac_h, qp->qplib_qp.smac); 2419 2420 /* For vlan, check the sgid for vlan existence */ 2421 2422 if (!is_vlan) { 2423 qp->qp1_hdr.eth.type = cpu_to_be16(ether_type); 2424 } else { 2425 qp->qp1_hdr.vlan.type = cpu_to_be16(ether_type); 2426 qp->qp1_hdr.vlan.tag = cpu_to_be16(vlan_id); 2427 } 2428 2429 if (is_grh || (ip_version == 6)) { 2430 memcpy(qp->qp1_hdr.grh.source_gid.raw, sgid_attr->gid.raw, 2431 sizeof(sgid_attr->gid)); 2432 memcpy(qp->qp1_hdr.grh.destination_gid.raw, qplib_ah->dgid.data, 2433 sizeof(sgid_attr->gid)); 2434 qp->qp1_hdr.grh.hop_limit = qplib_ah->hop_limit; 2435 } 2436 2437 if (ip_version == 4) { 2438 qp->qp1_hdr.ip4.tos = 0; 2439 qp->qp1_hdr.ip4.id = 0; 2440 qp->qp1_hdr.ip4.frag_off = htons(IP_DF); 2441 qp->qp1_hdr.ip4.ttl = qplib_ah->hop_limit; 2442 2443 memcpy(&qp->qp1_hdr.ip4.saddr, sgid_attr->gid.raw + 12, 4); 2444 memcpy(&qp->qp1_hdr.ip4.daddr, qplib_ah->dgid.data + 12, 4); 2445 qp->qp1_hdr.ip4.check = ib_ud_ip4_csum(&qp->qp1_hdr); 2446 } 2447 2448 if (is_udp) { 2449 qp->qp1_hdr.udp.dport = htons(ROCE_V2_UDP_DPORT); 2450 qp->qp1_hdr.udp.sport = htons(0x8CD1); 2451 qp->qp1_hdr.udp.csum = 0; 2452 } 2453 2454 /* BTH */ 2455 if (wr->opcode == IB_WR_SEND_WITH_IMM) { 2456 qp->qp1_hdr.bth.opcode = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE; 2457 qp->qp1_hdr.immediate_present = 1; 2458 } else { 2459 qp->qp1_hdr.bth.opcode = IB_OPCODE_UD_SEND_ONLY; 2460 } 2461 if (wr->send_flags & IB_SEND_SOLICITED) 2462 qp->qp1_hdr.bth.solicited_event = 1; 2463 /* pad_count */ 2464 qp->qp1_hdr.bth.pad_count = (4 - payload_size) & 3; 2465 2466 /* P_key for QP1 is for all members */ 2467 qp->qp1_hdr.bth.pkey = cpu_to_be16(0xFFFF); 2468 qp->qp1_hdr.bth.destination_qpn = IB_QP1; 2469 qp->qp1_hdr.bth.ack_req = 0; 2470 qp->send_psn++; 2471 qp->send_psn &= BTH_PSN_MASK; 2472 qp->qp1_hdr.bth.psn = cpu_to_be32(qp->send_psn); 2473 /* DETH */ 2474 /* Use the priviledged Q_Key for QP1 */ 2475 qp->qp1_hdr.deth.qkey = cpu_to_be32(IB_QP1_QKEY); 2476 qp->qp1_hdr.deth.source_qpn = IB_QP1; 2477 2478 /* Pack the QP1 to the transmit buffer */ 2479 buf = bnxt_qplib_get_qp1_sq_buf(&qp->qplib_qp, &sge); 2480 if (buf) { 2481 ib_ud_header_pack(&qp->qp1_hdr, buf); 2482 for (i = wqe->num_sge; i; i--) { 2483 wqe->sg_list[i].addr = wqe->sg_list[i - 1].addr; 2484 wqe->sg_list[i].lkey = wqe->sg_list[i - 1].lkey; 2485 wqe->sg_list[i].size = wqe->sg_list[i - 1].size; 2486 } 2487 2488 /* 2489 * Max Header buf size for IPV6 RoCE V2 is 86, 2490 * which is same as the QP1 SQ header buffer. 2491 * Header buf size for IPV4 RoCE V2 can be 66. 2492 * ETH(14) + VLAN(4)+ IP(20) + UDP (8) + BTH(20). 2493 * Subtract 20 bytes from QP1 SQ header buf size 2494 */ 2495 if (is_udp && ip_version == 4) 2496 sge.size -= 20; 2497 /* 2498 * Max Header buf size for RoCE V1 is 78. 2499 * ETH(14) + VLAN(4) + GRH(40) + BTH(20). 2500 * Subtract 8 bytes from QP1 SQ header buf size 2501 */ 2502 if (!is_udp) 2503 sge.size -= 8; 2504 2505 /* Subtract 4 bytes for non vlan packets */ 2506 if (!is_vlan) 2507 sge.size -= 4; 2508 2509 wqe->sg_list[0].addr = sge.addr; 2510 wqe->sg_list[0].lkey = sge.lkey; 2511 wqe->sg_list[0].size = sge.size; 2512 wqe->num_sge++; 2513 2514 } else { 2515 ibdev_err(&qp->rdev->ibdev, "QP1 buffer is empty!"); 2516 rc = -ENOMEM; 2517 } 2518 return rc; 2519 } 2520 2521 /* For the MAD layer, it only provides the recv SGE the size of 2522 * ib_grh + MAD datagram. No Ethernet headers, Ethertype, BTH, DETH, 2523 * nor RoCE iCRC. The Cu+ solution must provide buffer for the entire 2524 * receive packet (334 bytes) with no VLAN and then copy the GRH 2525 * and the MAD datagram out to the provided SGE. 2526 */ 2527 static int bnxt_re_build_qp1_shadow_qp_recv(struct bnxt_re_qp *qp, 2528 const struct ib_recv_wr *wr, 2529 struct bnxt_qplib_swqe *wqe, 2530 int payload_size) 2531 { 2532 struct bnxt_re_sqp_entries *sqp_entry; 2533 struct bnxt_qplib_sge ref, sge; 2534 struct bnxt_re_dev *rdev; 2535 u32 rq_prod_index; 2536 2537 rdev = qp->rdev; 2538 2539 rq_prod_index = bnxt_qplib_get_rq_prod_index(&qp->qplib_qp); 2540 2541 if (!bnxt_qplib_get_qp1_rq_buf(&qp->qplib_qp, &sge)) 2542 return -ENOMEM; 2543 2544 /* Create 1 SGE to receive the entire 2545 * ethernet packet 2546 */ 2547 /* Save the reference from ULP */ 2548 ref.addr = wqe->sg_list[0].addr; 2549 ref.lkey = wqe->sg_list[0].lkey; 2550 ref.size = wqe->sg_list[0].size; 2551 2552 sqp_entry = &rdev->gsi_ctx.sqp_tbl[rq_prod_index]; 2553 2554 /* SGE 1 */ 2555 wqe->sg_list[0].addr = sge.addr; 2556 wqe->sg_list[0].lkey = sge.lkey; 2557 wqe->sg_list[0].size = BNXT_QPLIB_MAX_QP1_RQ_HDR_SIZE_V2; 2558 sge.size -= wqe->sg_list[0].size; 2559 2560 sqp_entry->sge.addr = ref.addr; 2561 sqp_entry->sge.lkey = ref.lkey; 2562 sqp_entry->sge.size = ref.size; 2563 /* Store the wrid for reporting completion */ 2564 sqp_entry->wrid = wqe->wr_id; 2565 /* change the wqe->wrid to table index */ 2566 wqe->wr_id = rq_prod_index; 2567 return 0; 2568 } 2569 2570 static int is_ud_qp(struct bnxt_re_qp *qp) 2571 { 2572 return (qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_UD || 2573 qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_GSI); 2574 } 2575 2576 static int bnxt_re_build_send_wqe(struct bnxt_re_qp *qp, 2577 const struct ib_send_wr *wr, 2578 struct bnxt_qplib_swqe *wqe) 2579 { 2580 struct bnxt_re_ah *ah = NULL; 2581 2582 if (is_ud_qp(qp)) { 2583 ah = container_of(ud_wr(wr)->ah, struct bnxt_re_ah, ib_ah); 2584 wqe->send.q_key = ud_wr(wr)->remote_qkey; 2585 wqe->send.dst_qp = ud_wr(wr)->remote_qpn; 2586 wqe->send.avid = ah->qplib_ah.id; 2587 } 2588 switch (wr->opcode) { 2589 case IB_WR_SEND: 2590 wqe->type = BNXT_QPLIB_SWQE_TYPE_SEND; 2591 break; 2592 case IB_WR_SEND_WITH_IMM: 2593 wqe->type = BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM; 2594 wqe->send.imm_data = be32_to_cpu(wr->ex.imm_data); 2595 break; 2596 case IB_WR_SEND_WITH_INV: 2597 wqe->type = BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV; 2598 wqe->send.inv_key = wr->ex.invalidate_rkey; 2599 break; 2600 default: 2601 return -EINVAL; 2602 } 2603 if (wr->send_flags & IB_SEND_SIGNALED) 2604 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 2605 if (wr->send_flags & IB_SEND_FENCE) 2606 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; 2607 if (wr->send_flags & IB_SEND_SOLICITED) 2608 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; 2609 if (wr->send_flags & IB_SEND_INLINE) 2610 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_INLINE; 2611 2612 return 0; 2613 } 2614 2615 static int bnxt_re_build_rdma_wqe(const struct ib_send_wr *wr, 2616 struct bnxt_qplib_swqe *wqe) 2617 { 2618 switch (wr->opcode) { 2619 case IB_WR_RDMA_WRITE: 2620 wqe->type = BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE; 2621 break; 2622 case IB_WR_RDMA_WRITE_WITH_IMM: 2623 wqe->type = BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM; 2624 wqe->rdma.imm_data = be32_to_cpu(wr->ex.imm_data); 2625 break; 2626 case IB_WR_RDMA_READ: 2627 wqe->type = BNXT_QPLIB_SWQE_TYPE_RDMA_READ; 2628 wqe->rdma.inv_key = wr->ex.invalidate_rkey; 2629 break; 2630 default: 2631 return -EINVAL; 2632 } 2633 wqe->rdma.remote_va = rdma_wr(wr)->remote_addr; 2634 wqe->rdma.r_key = rdma_wr(wr)->rkey; 2635 if (wr->send_flags & IB_SEND_SIGNALED) 2636 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 2637 if (wr->send_flags & IB_SEND_FENCE) 2638 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; 2639 if (wr->send_flags & IB_SEND_SOLICITED) 2640 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; 2641 if (wr->send_flags & IB_SEND_INLINE) 2642 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_INLINE; 2643 2644 return 0; 2645 } 2646 2647 static int bnxt_re_build_atomic_wqe(const struct ib_send_wr *wr, 2648 struct bnxt_qplib_swqe *wqe) 2649 { 2650 switch (wr->opcode) { 2651 case IB_WR_ATOMIC_CMP_AND_SWP: 2652 wqe->type = BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP; 2653 wqe->atomic.cmp_data = atomic_wr(wr)->compare_add; 2654 wqe->atomic.swap_data = atomic_wr(wr)->swap; 2655 break; 2656 case IB_WR_ATOMIC_FETCH_AND_ADD: 2657 wqe->type = BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD; 2658 wqe->atomic.cmp_data = atomic_wr(wr)->compare_add; 2659 break; 2660 default: 2661 return -EINVAL; 2662 } 2663 wqe->atomic.remote_va = atomic_wr(wr)->remote_addr; 2664 wqe->atomic.r_key = atomic_wr(wr)->rkey; 2665 if (wr->send_flags & IB_SEND_SIGNALED) 2666 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 2667 if (wr->send_flags & IB_SEND_FENCE) 2668 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; 2669 if (wr->send_flags & IB_SEND_SOLICITED) 2670 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; 2671 return 0; 2672 } 2673 2674 static int bnxt_re_build_inv_wqe(const struct ib_send_wr *wr, 2675 struct bnxt_qplib_swqe *wqe) 2676 { 2677 wqe->type = BNXT_QPLIB_SWQE_TYPE_LOCAL_INV; 2678 wqe->local_inv.inv_l_key = wr->ex.invalidate_rkey; 2679 2680 if (wr->send_flags & IB_SEND_SIGNALED) 2681 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 2682 if (wr->send_flags & IB_SEND_SOLICITED) 2683 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; 2684 2685 return 0; 2686 } 2687 2688 static int bnxt_re_build_reg_wqe(const struct ib_reg_wr *wr, 2689 struct bnxt_qplib_swqe *wqe) 2690 { 2691 struct bnxt_re_mr *mr = container_of(wr->mr, struct bnxt_re_mr, ib_mr); 2692 struct bnxt_qplib_frpl *qplib_frpl = &mr->qplib_frpl; 2693 int access = wr->access; 2694 2695 wqe->frmr.pbl_ptr = (__le64 *)qplib_frpl->hwq.pbl_ptr[0]; 2696 wqe->frmr.pbl_dma_ptr = qplib_frpl->hwq.pbl_dma_ptr[0]; 2697 wqe->frmr.page_list = mr->pages; 2698 wqe->frmr.page_list_len = mr->npages; 2699 wqe->frmr.levels = qplib_frpl->hwq.level; 2700 wqe->type = BNXT_QPLIB_SWQE_TYPE_REG_MR; 2701 2702 if (wr->wr.send_flags & IB_SEND_SIGNALED) 2703 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; 2704 2705 if (access & IB_ACCESS_LOCAL_WRITE) 2706 wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE; 2707 if (access & IB_ACCESS_REMOTE_READ) 2708 wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_REMOTE_READ; 2709 if (access & IB_ACCESS_REMOTE_WRITE) 2710 wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_REMOTE_WRITE; 2711 if (access & IB_ACCESS_REMOTE_ATOMIC) 2712 wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_REMOTE_ATOMIC; 2713 if (access & IB_ACCESS_MW_BIND) 2714 wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_WINDOW_BIND; 2715 2716 wqe->frmr.l_key = wr->key; 2717 wqe->frmr.length = wr->mr->length; 2718 wqe->frmr.pbl_pg_sz_log = ilog2(PAGE_SIZE >> PAGE_SHIFT_4K); 2719 wqe->frmr.pg_sz_log = ilog2(wr->mr->page_size >> PAGE_SHIFT_4K); 2720 wqe->frmr.va = wr->mr->iova; 2721 return 0; 2722 } 2723 2724 static int bnxt_re_copy_inline_data(struct bnxt_re_dev *rdev, 2725 const struct ib_send_wr *wr, 2726 struct bnxt_qplib_swqe *wqe) 2727 { 2728 /* Copy the inline data to the data field */ 2729 u8 *in_data; 2730 u32 i, sge_len; 2731 void *sge_addr; 2732 2733 in_data = wqe->inline_data; 2734 for (i = 0; i < wr->num_sge; i++) { 2735 sge_addr = (void *)(unsigned long) 2736 wr->sg_list[i].addr; 2737 sge_len = wr->sg_list[i].length; 2738 2739 if ((sge_len + wqe->inline_len) > 2740 BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH) { 2741 ibdev_err(&rdev->ibdev, 2742 "Inline data size requested > supported value"); 2743 return -EINVAL; 2744 } 2745 sge_len = wr->sg_list[i].length; 2746 2747 memcpy(in_data, sge_addr, sge_len); 2748 in_data += wr->sg_list[i].length; 2749 wqe->inline_len += wr->sg_list[i].length; 2750 } 2751 return wqe->inline_len; 2752 } 2753 2754 static int bnxt_re_copy_wr_payload(struct bnxt_re_dev *rdev, 2755 const struct ib_send_wr *wr, 2756 struct bnxt_qplib_swqe *wqe) 2757 { 2758 int payload_sz = 0; 2759 2760 if (wr->send_flags & IB_SEND_INLINE) 2761 payload_sz = bnxt_re_copy_inline_data(rdev, wr, wqe); 2762 else 2763 payload_sz = bnxt_re_build_sgl(wr->sg_list, wqe->sg_list, 2764 wqe->num_sge); 2765 2766 return payload_sz; 2767 } 2768 2769 static void bnxt_ud_qp_hw_stall_workaround(struct bnxt_re_qp *qp) 2770 { 2771 if ((qp->ib_qp.qp_type == IB_QPT_UD || 2772 qp->ib_qp.qp_type == IB_QPT_GSI || 2773 qp->ib_qp.qp_type == IB_QPT_RAW_ETHERTYPE) && 2774 qp->qplib_qp.wqe_cnt == BNXT_RE_UD_QP_HW_STALL) { 2775 int qp_attr_mask; 2776 struct ib_qp_attr qp_attr; 2777 2778 qp_attr_mask = IB_QP_STATE; 2779 qp_attr.qp_state = IB_QPS_RTS; 2780 bnxt_re_modify_qp(&qp->ib_qp, &qp_attr, qp_attr_mask, NULL); 2781 qp->qplib_qp.wqe_cnt = 0; 2782 } 2783 } 2784 2785 static int bnxt_re_post_send_shadow_qp(struct bnxt_re_dev *rdev, 2786 struct bnxt_re_qp *qp, 2787 const struct ib_send_wr *wr) 2788 { 2789 int rc = 0, payload_sz = 0; 2790 unsigned long flags; 2791 2792 spin_lock_irqsave(&qp->sq_lock, flags); 2793 while (wr) { 2794 struct bnxt_qplib_swqe wqe = {}; 2795 2796 /* Common */ 2797 wqe.num_sge = wr->num_sge; 2798 if (wr->num_sge > qp->qplib_qp.sq.max_sge) { 2799 ibdev_err(&rdev->ibdev, 2800 "Limit exceeded for Send SGEs"); 2801 rc = -EINVAL; 2802 goto bad; 2803 } 2804 2805 payload_sz = bnxt_re_copy_wr_payload(qp->rdev, wr, &wqe); 2806 if (payload_sz < 0) { 2807 rc = -EINVAL; 2808 goto bad; 2809 } 2810 wqe.wr_id = wr->wr_id; 2811 2812 wqe.type = BNXT_QPLIB_SWQE_TYPE_SEND; 2813 2814 rc = bnxt_re_build_send_wqe(qp, wr, &wqe); 2815 if (!rc) 2816 rc = bnxt_qplib_post_send(&qp->qplib_qp, &wqe); 2817 bad: 2818 if (rc) { 2819 ibdev_err(&rdev->ibdev, 2820 "Post send failed opcode = %#x rc = %d", 2821 wr->opcode, rc); 2822 break; 2823 } 2824 wr = wr->next; 2825 } 2826 bnxt_qplib_post_send_db(&qp->qplib_qp); 2827 bnxt_ud_qp_hw_stall_workaround(qp); 2828 spin_unlock_irqrestore(&qp->sq_lock, flags); 2829 return rc; 2830 } 2831 2832 static void bnxt_re_legacy_set_uc_fence(struct bnxt_qplib_swqe *wqe) 2833 { 2834 /* Need unconditional fence for non-wire memory opcode 2835 * to work as expected. 2836 */ 2837 if (wqe->type == BNXT_QPLIB_SWQE_TYPE_LOCAL_INV || 2838 wqe->type == BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR || 2839 wqe->type == BNXT_QPLIB_SWQE_TYPE_REG_MR || 2840 wqe->type == BNXT_QPLIB_SWQE_TYPE_BIND_MW) 2841 wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; 2842 } 2843 2844 int bnxt_re_post_send(struct ib_qp *ib_qp, const struct ib_send_wr *wr, 2845 const struct ib_send_wr **bad_wr) 2846 { 2847 struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 2848 struct bnxt_qplib_swqe wqe; 2849 int rc = 0, payload_sz = 0; 2850 unsigned long flags; 2851 2852 spin_lock_irqsave(&qp->sq_lock, flags); 2853 while (wr) { 2854 /* House keeping */ 2855 memset(&wqe, 0, sizeof(wqe)); 2856 2857 /* Common */ 2858 wqe.num_sge = wr->num_sge; 2859 if (wr->num_sge > qp->qplib_qp.sq.max_sge) { 2860 ibdev_err(&qp->rdev->ibdev, 2861 "Limit exceeded for Send SGEs"); 2862 rc = -EINVAL; 2863 goto bad; 2864 } 2865 2866 payload_sz = bnxt_re_copy_wr_payload(qp->rdev, wr, &wqe); 2867 if (payload_sz < 0) { 2868 rc = -EINVAL; 2869 goto bad; 2870 } 2871 wqe.wr_id = wr->wr_id; 2872 2873 switch (wr->opcode) { 2874 case IB_WR_SEND: 2875 case IB_WR_SEND_WITH_IMM: 2876 if (qp->qplib_qp.type == CMDQ_CREATE_QP1_TYPE_GSI) { 2877 rc = bnxt_re_build_qp1_send_v2(qp, wr, &wqe, 2878 payload_sz); 2879 if (rc) 2880 goto bad; 2881 wqe.rawqp1.lflags |= 2882 SQ_SEND_RAWETH_QP1_LFLAGS_ROCE_CRC; 2883 } 2884 switch (wr->send_flags) { 2885 case IB_SEND_IP_CSUM: 2886 wqe.rawqp1.lflags |= 2887 SQ_SEND_RAWETH_QP1_LFLAGS_IP_CHKSUM; 2888 break; 2889 default: 2890 break; 2891 } 2892 fallthrough; 2893 case IB_WR_SEND_WITH_INV: 2894 rc = bnxt_re_build_send_wqe(qp, wr, &wqe); 2895 break; 2896 case IB_WR_RDMA_WRITE: 2897 case IB_WR_RDMA_WRITE_WITH_IMM: 2898 case IB_WR_RDMA_READ: 2899 rc = bnxt_re_build_rdma_wqe(wr, &wqe); 2900 break; 2901 case IB_WR_ATOMIC_CMP_AND_SWP: 2902 case IB_WR_ATOMIC_FETCH_AND_ADD: 2903 rc = bnxt_re_build_atomic_wqe(wr, &wqe); 2904 break; 2905 case IB_WR_RDMA_READ_WITH_INV: 2906 ibdev_err(&qp->rdev->ibdev, 2907 "RDMA Read with Invalidate is not supported"); 2908 rc = -EINVAL; 2909 goto bad; 2910 case IB_WR_LOCAL_INV: 2911 rc = bnxt_re_build_inv_wqe(wr, &wqe); 2912 break; 2913 case IB_WR_REG_MR: 2914 rc = bnxt_re_build_reg_wqe(reg_wr(wr), &wqe); 2915 break; 2916 default: 2917 /* Unsupported WRs */ 2918 ibdev_err(&qp->rdev->ibdev, 2919 "WR (%#x) is not supported", wr->opcode); 2920 rc = -EINVAL; 2921 goto bad; 2922 } 2923 if (!rc) { 2924 if (!bnxt_qplib_is_chip_gen_p5_p7(qp->rdev->chip_ctx)) 2925 bnxt_re_legacy_set_uc_fence(&wqe); 2926 rc = bnxt_qplib_post_send(&qp->qplib_qp, &wqe); 2927 } 2928 bad: 2929 if (rc) { 2930 ibdev_err(&qp->rdev->ibdev, 2931 "post_send failed op:%#x qps = %#x rc = %d\n", 2932 wr->opcode, qp->qplib_qp.state, rc); 2933 *bad_wr = wr; 2934 break; 2935 } 2936 wr = wr->next; 2937 } 2938 bnxt_qplib_post_send_db(&qp->qplib_qp); 2939 bnxt_ud_qp_hw_stall_workaround(qp); 2940 spin_unlock_irqrestore(&qp->sq_lock, flags); 2941 2942 return rc; 2943 } 2944 2945 static int bnxt_re_post_recv_shadow_qp(struct bnxt_re_dev *rdev, 2946 struct bnxt_re_qp *qp, 2947 const struct ib_recv_wr *wr) 2948 { 2949 struct bnxt_qplib_swqe wqe; 2950 int rc = 0; 2951 2952 while (wr) { 2953 /* House keeping */ 2954 memset(&wqe, 0, sizeof(wqe)); 2955 2956 /* Common */ 2957 wqe.num_sge = wr->num_sge; 2958 if (wr->num_sge > qp->qplib_qp.rq.max_sge) { 2959 ibdev_err(&rdev->ibdev, 2960 "Limit exceeded for Receive SGEs"); 2961 rc = -EINVAL; 2962 break; 2963 } 2964 bnxt_re_build_sgl(wr->sg_list, wqe.sg_list, wr->num_sge); 2965 wqe.wr_id = wr->wr_id; 2966 wqe.type = BNXT_QPLIB_SWQE_TYPE_RECV; 2967 2968 rc = bnxt_qplib_post_recv(&qp->qplib_qp, &wqe); 2969 if (rc) 2970 break; 2971 2972 wr = wr->next; 2973 } 2974 if (!rc) 2975 bnxt_qplib_post_recv_db(&qp->qplib_qp); 2976 return rc; 2977 } 2978 2979 int bnxt_re_post_recv(struct ib_qp *ib_qp, const struct ib_recv_wr *wr, 2980 const struct ib_recv_wr **bad_wr) 2981 { 2982 struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); 2983 struct bnxt_qplib_swqe wqe; 2984 int rc = 0, payload_sz = 0; 2985 unsigned long flags; 2986 u32 count = 0; 2987 2988 spin_lock_irqsave(&qp->rq_lock, flags); 2989 while (wr) { 2990 /* House keeping */ 2991 memset(&wqe, 0, sizeof(wqe)); 2992 2993 /* Common */ 2994 wqe.num_sge = wr->num_sge; 2995 if (wr->num_sge > qp->qplib_qp.rq.max_sge) { 2996 ibdev_err(&qp->rdev->ibdev, 2997 "Limit exceeded for Receive SGEs"); 2998 rc = -EINVAL; 2999 *bad_wr = wr; 3000 break; 3001 } 3002 3003 payload_sz = bnxt_re_build_sgl(wr->sg_list, wqe.sg_list, 3004 wr->num_sge); 3005 wqe.wr_id = wr->wr_id; 3006 wqe.type = BNXT_QPLIB_SWQE_TYPE_RECV; 3007 3008 if (ib_qp->qp_type == IB_QPT_GSI && 3009 qp->qplib_qp.type != CMDQ_CREATE_QP_TYPE_GSI) 3010 rc = bnxt_re_build_qp1_shadow_qp_recv(qp, wr, &wqe, 3011 payload_sz); 3012 if (!rc) 3013 rc = bnxt_qplib_post_recv(&qp->qplib_qp, &wqe); 3014 if (rc) { 3015 *bad_wr = wr; 3016 break; 3017 } 3018 3019 /* Ring DB if the RQEs posted reaches a threshold value */ 3020 if (++count >= BNXT_RE_RQ_WQE_THRESHOLD) { 3021 bnxt_qplib_post_recv_db(&qp->qplib_qp); 3022 count = 0; 3023 } 3024 3025 wr = wr->next; 3026 } 3027 3028 if (count) 3029 bnxt_qplib_post_recv_db(&qp->qplib_qp); 3030 3031 spin_unlock_irqrestore(&qp->rq_lock, flags); 3032 3033 return rc; 3034 } 3035 3036 static struct bnxt_qplib_nq *bnxt_re_get_nq(struct bnxt_re_dev *rdev) 3037 { 3038 int min, indx; 3039 3040 mutex_lock(&rdev->nqr->load_lock); 3041 for (indx = 0, min = 0; indx < (rdev->nqr->num_msix - 1); indx++) { 3042 if (rdev->nqr->nq[min].load > rdev->nqr->nq[indx].load) 3043 min = indx; 3044 } 3045 rdev->nqr->nq[min].load++; 3046 mutex_unlock(&rdev->nqr->load_lock); 3047 3048 return &rdev->nqr->nq[min]; 3049 } 3050 3051 static void bnxt_re_put_nq(struct bnxt_re_dev *rdev, struct bnxt_qplib_nq *nq) 3052 { 3053 mutex_lock(&rdev->nqr->load_lock); 3054 nq->load--; 3055 mutex_unlock(&rdev->nqr->load_lock); 3056 } 3057 3058 /* Completion Queues */ 3059 int bnxt_re_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata) 3060 { 3061 struct bnxt_qplib_chip_ctx *cctx; 3062 struct bnxt_qplib_nq *nq; 3063 struct bnxt_re_dev *rdev; 3064 struct bnxt_re_cq *cq; 3065 3066 cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); 3067 rdev = cq->rdev; 3068 nq = cq->qplib_cq.nq; 3069 cctx = rdev->chip_ctx; 3070 3071 if (cctx->modes.toggle_bits & BNXT_QPLIB_CQ_TOGGLE_BIT) { 3072 free_page((unsigned long)cq->uctx_cq_page); 3073 hash_del(&cq->hash_entry); 3074 } 3075 bnxt_qplib_destroy_cq(&rdev->qplib_res, &cq->qplib_cq); 3076 3077 bnxt_re_put_nq(rdev, nq); 3078 ib_umem_release(cq->umem); 3079 3080 atomic_dec(&rdev->stats.res.cq_count); 3081 nq->budget--; 3082 kfree(cq->cql); 3083 return 0; 3084 } 3085 3086 int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 3087 struct uverbs_attr_bundle *attrs) 3088 { 3089 struct bnxt_re_cq *cq = container_of(ibcq, struct bnxt_re_cq, ib_cq); 3090 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibcq->device, ibdev); 3091 struct ib_udata *udata = &attrs->driver_udata; 3092 struct bnxt_re_ucontext *uctx = 3093 rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx); 3094 struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; 3095 struct bnxt_qplib_chip_ctx *cctx; 3096 int cqe = attr->cqe; 3097 int rc, entries; 3098 u32 active_cqs; 3099 3100 if (attr->flags) 3101 return -EOPNOTSUPP; 3102 3103 /* Validate CQ fields */ 3104 if (cqe < 1 || cqe > dev_attr->max_cq_wqes) { 3105 ibdev_err(&rdev->ibdev, "Failed to create CQ -max exceeded"); 3106 return -EINVAL; 3107 } 3108 3109 cq->rdev = rdev; 3110 cctx = rdev->chip_ctx; 3111 cq->qplib_cq.cq_handle = (u64)(unsigned long)(&cq->qplib_cq); 3112 3113 entries = bnxt_re_init_depth(cqe + 1, uctx); 3114 if (entries > dev_attr->max_cq_wqes + 1) 3115 entries = dev_attr->max_cq_wqes + 1; 3116 3117 cq->qplib_cq.sg_info.pgsize = PAGE_SIZE; 3118 cq->qplib_cq.sg_info.pgshft = PAGE_SHIFT; 3119 if (udata) { 3120 struct bnxt_re_cq_req req; 3121 if (ib_copy_from_udata(&req, udata, sizeof(req))) { 3122 rc = -EFAULT; 3123 goto fail; 3124 } 3125 3126 cq->umem = ib_umem_get(&rdev->ibdev, req.cq_va, 3127 entries * sizeof(struct cq_base), 3128 IB_ACCESS_LOCAL_WRITE); 3129 if (IS_ERR(cq->umem)) { 3130 rc = PTR_ERR(cq->umem); 3131 goto fail; 3132 } 3133 cq->qplib_cq.sg_info.umem = cq->umem; 3134 cq->qplib_cq.dpi = &uctx->dpi; 3135 } else { 3136 cq->max_cql = min_t(u32, entries, MAX_CQL_PER_POLL); 3137 cq->cql = kcalloc(cq->max_cql, sizeof(struct bnxt_qplib_cqe), 3138 GFP_KERNEL); 3139 if (!cq->cql) { 3140 rc = -ENOMEM; 3141 goto fail; 3142 } 3143 3144 cq->qplib_cq.dpi = &rdev->dpi_privileged; 3145 } 3146 cq->qplib_cq.max_wqe = entries; 3147 cq->qplib_cq.coalescing = &rdev->cq_coalescing; 3148 cq->qplib_cq.nq = bnxt_re_get_nq(rdev); 3149 cq->qplib_cq.cnq_hw_ring_id = cq->qplib_cq.nq->ring_id; 3150 3151 rc = bnxt_qplib_create_cq(&rdev->qplib_res, &cq->qplib_cq); 3152 if (rc) { 3153 ibdev_err(&rdev->ibdev, "Failed to create HW CQ"); 3154 goto fail; 3155 } 3156 3157 cq->ib_cq.cqe = entries; 3158 cq->cq_period = cq->qplib_cq.period; 3159 3160 active_cqs = atomic_inc_return(&rdev->stats.res.cq_count); 3161 if (active_cqs > rdev->stats.res.cq_watermark) 3162 rdev->stats.res.cq_watermark = active_cqs; 3163 spin_lock_init(&cq->cq_lock); 3164 3165 if (udata) { 3166 struct bnxt_re_cq_resp resp = {}; 3167 3168 if (cctx->modes.toggle_bits & BNXT_QPLIB_CQ_TOGGLE_BIT) { 3169 hash_add(rdev->cq_hash, &cq->hash_entry, cq->qplib_cq.id); 3170 /* Allocate a page */ 3171 cq->uctx_cq_page = (void *)get_zeroed_page(GFP_KERNEL); 3172 if (!cq->uctx_cq_page) { 3173 rc = -ENOMEM; 3174 goto c2fail; 3175 } 3176 resp.comp_mask |= BNXT_RE_CQ_TOGGLE_PAGE_SUPPORT; 3177 } 3178 resp.cqid = cq->qplib_cq.id; 3179 resp.tail = cq->qplib_cq.hwq.cons; 3180 resp.phase = cq->qplib_cq.period; 3181 resp.rsvd = 0; 3182 rc = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); 3183 if (rc) { 3184 ibdev_err(&rdev->ibdev, "Failed to copy CQ udata"); 3185 bnxt_qplib_destroy_cq(&rdev->qplib_res, &cq->qplib_cq); 3186 goto free_mem; 3187 } 3188 } 3189 3190 return 0; 3191 3192 free_mem: 3193 free_page((unsigned long)cq->uctx_cq_page); 3194 c2fail: 3195 ib_umem_release(cq->umem); 3196 fail: 3197 kfree(cq->cql); 3198 return rc; 3199 } 3200 3201 static void bnxt_re_resize_cq_complete(struct bnxt_re_cq *cq) 3202 { 3203 struct bnxt_re_dev *rdev = cq->rdev; 3204 3205 bnxt_qplib_resize_cq_complete(&rdev->qplib_res, &cq->qplib_cq); 3206 3207 cq->qplib_cq.max_wqe = cq->resize_cqe; 3208 if (cq->resize_umem) { 3209 ib_umem_release(cq->umem); 3210 cq->umem = cq->resize_umem; 3211 cq->resize_umem = NULL; 3212 cq->resize_cqe = 0; 3213 } 3214 } 3215 3216 int bnxt_re_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata) 3217 { 3218 struct bnxt_qplib_sg_info sg_info = {}; 3219 struct bnxt_qplib_dpi *orig_dpi = NULL; 3220 struct bnxt_qplib_dev_attr *dev_attr; 3221 struct bnxt_re_ucontext *uctx = NULL; 3222 struct bnxt_re_resize_cq_req req; 3223 struct bnxt_re_dev *rdev; 3224 struct bnxt_re_cq *cq; 3225 int rc, entries; 3226 3227 cq = container_of(ibcq, struct bnxt_re_cq, ib_cq); 3228 rdev = cq->rdev; 3229 dev_attr = &rdev->dev_attr; 3230 if (!ibcq->uobject) { 3231 ibdev_err(&rdev->ibdev, "Kernel CQ Resize not supported"); 3232 return -EOPNOTSUPP; 3233 } 3234 3235 if (cq->resize_umem) { 3236 ibdev_err(&rdev->ibdev, "Resize CQ %#x failed - Busy", 3237 cq->qplib_cq.id); 3238 return -EBUSY; 3239 } 3240 3241 /* Check the requested cq depth out of supported depth */ 3242 if (cqe < 1 || cqe > dev_attr->max_cq_wqes) { 3243 ibdev_err(&rdev->ibdev, "Resize CQ %#x failed - out of range cqe %d", 3244 cq->qplib_cq.id, cqe); 3245 return -EINVAL; 3246 } 3247 3248 uctx = rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx); 3249 entries = bnxt_re_init_depth(cqe + 1, uctx); 3250 if (entries > dev_attr->max_cq_wqes + 1) 3251 entries = dev_attr->max_cq_wqes + 1; 3252 3253 /* uverbs consumer */ 3254 if (ib_copy_from_udata(&req, udata, sizeof(req))) { 3255 rc = -EFAULT; 3256 goto fail; 3257 } 3258 3259 cq->resize_umem = ib_umem_get(&rdev->ibdev, req.cq_va, 3260 entries * sizeof(struct cq_base), 3261 IB_ACCESS_LOCAL_WRITE); 3262 if (IS_ERR(cq->resize_umem)) { 3263 rc = PTR_ERR(cq->resize_umem); 3264 cq->resize_umem = NULL; 3265 ibdev_err(&rdev->ibdev, "%s: ib_umem_get failed! rc = %d\n", 3266 __func__, rc); 3267 goto fail; 3268 } 3269 cq->resize_cqe = entries; 3270 memcpy(&sg_info, &cq->qplib_cq.sg_info, sizeof(sg_info)); 3271 orig_dpi = cq->qplib_cq.dpi; 3272 3273 cq->qplib_cq.sg_info.umem = cq->resize_umem; 3274 cq->qplib_cq.sg_info.pgsize = PAGE_SIZE; 3275 cq->qplib_cq.sg_info.pgshft = PAGE_SHIFT; 3276 cq->qplib_cq.dpi = &uctx->dpi; 3277 3278 rc = bnxt_qplib_resize_cq(&rdev->qplib_res, &cq->qplib_cq, entries); 3279 if (rc) { 3280 ibdev_err(&rdev->ibdev, "Resize HW CQ %#x failed!", 3281 cq->qplib_cq.id); 3282 goto fail; 3283 } 3284 3285 cq->ib_cq.cqe = cq->resize_cqe; 3286 atomic_inc(&rdev->stats.res.resize_count); 3287 3288 return 0; 3289 3290 fail: 3291 if (cq->resize_umem) { 3292 ib_umem_release(cq->resize_umem); 3293 cq->resize_umem = NULL; 3294 cq->resize_cqe = 0; 3295 memcpy(&cq->qplib_cq.sg_info, &sg_info, sizeof(sg_info)); 3296 cq->qplib_cq.dpi = orig_dpi; 3297 } 3298 return rc; 3299 } 3300 3301 static u8 __req_to_ib_wc_status(u8 qstatus) 3302 { 3303 switch (qstatus) { 3304 case CQ_REQ_STATUS_OK: 3305 return IB_WC_SUCCESS; 3306 case CQ_REQ_STATUS_BAD_RESPONSE_ERR: 3307 return IB_WC_BAD_RESP_ERR; 3308 case CQ_REQ_STATUS_LOCAL_LENGTH_ERR: 3309 return IB_WC_LOC_LEN_ERR; 3310 case CQ_REQ_STATUS_LOCAL_QP_OPERATION_ERR: 3311 return IB_WC_LOC_QP_OP_ERR; 3312 case CQ_REQ_STATUS_LOCAL_PROTECTION_ERR: 3313 return IB_WC_LOC_PROT_ERR; 3314 case CQ_REQ_STATUS_MEMORY_MGT_OPERATION_ERR: 3315 return IB_WC_GENERAL_ERR; 3316 case CQ_REQ_STATUS_REMOTE_INVALID_REQUEST_ERR: 3317 return IB_WC_REM_INV_REQ_ERR; 3318 case CQ_REQ_STATUS_REMOTE_ACCESS_ERR: 3319 return IB_WC_REM_ACCESS_ERR; 3320 case CQ_REQ_STATUS_REMOTE_OPERATION_ERR: 3321 return IB_WC_REM_OP_ERR; 3322 case CQ_REQ_STATUS_RNR_NAK_RETRY_CNT_ERR: 3323 return IB_WC_RNR_RETRY_EXC_ERR; 3324 case CQ_REQ_STATUS_TRANSPORT_RETRY_CNT_ERR: 3325 return IB_WC_RETRY_EXC_ERR; 3326 case CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR: 3327 return IB_WC_WR_FLUSH_ERR; 3328 default: 3329 return IB_WC_GENERAL_ERR; 3330 } 3331 return 0; 3332 } 3333 3334 static u8 __rawqp1_to_ib_wc_status(u8 qstatus) 3335 { 3336 switch (qstatus) { 3337 case CQ_RES_RAWETH_QP1_STATUS_OK: 3338 return IB_WC_SUCCESS; 3339 case CQ_RES_RAWETH_QP1_STATUS_LOCAL_ACCESS_ERROR: 3340 return IB_WC_LOC_ACCESS_ERR; 3341 case CQ_RES_RAWETH_QP1_STATUS_HW_LOCAL_LENGTH_ERR: 3342 return IB_WC_LOC_LEN_ERR; 3343 case CQ_RES_RAWETH_QP1_STATUS_LOCAL_PROTECTION_ERR: 3344 return IB_WC_LOC_PROT_ERR; 3345 case CQ_RES_RAWETH_QP1_STATUS_LOCAL_QP_OPERATION_ERR: 3346 return IB_WC_LOC_QP_OP_ERR; 3347 case CQ_RES_RAWETH_QP1_STATUS_MEMORY_MGT_OPERATION_ERR: 3348 return IB_WC_GENERAL_ERR; 3349 case CQ_RES_RAWETH_QP1_STATUS_WORK_REQUEST_FLUSHED_ERR: 3350 return IB_WC_WR_FLUSH_ERR; 3351 case CQ_RES_RAWETH_QP1_STATUS_HW_FLUSH_ERR: 3352 return IB_WC_WR_FLUSH_ERR; 3353 default: 3354 return IB_WC_GENERAL_ERR; 3355 } 3356 } 3357 3358 static u8 __rc_to_ib_wc_status(u8 qstatus) 3359 { 3360 switch (qstatus) { 3361 case CQ_RES_RC_STATUS_OK: 3362 return IB_WC_SUCCESS; 3363 case CQ_RES_RC_STATUS_LOCAL_ACCESS_ERROR: 3364 return IB_WC_LOC_ACCESS_ERR; 3365 case CQ_RES_RC_STATUS_LOCAL_LENGTH_ERR: 3366 return IB_WC_LOC_LEN_ERR; 3367 case CQ_RES_RC_STATUS_LOCAL_PROTECTION_ERR: 3368 return IB_WC_LOC_PROT_ERR; 3369 case CQ_RES_RC_STATUS_LOCAL_QP_OPERATION_ERR: 3370 return IB_WC_LOC_QP_OP_ERR; 3371 case CQ_RES_RC_STATUS_MEMORY_MGT_OPERATION_ERR: 3372 return IB_WC_GENERAL_ERR; 3373 case CQ_RES_RC_STATUS_REMOTE_INVALID_REQUEST_ERR: 3374 return IB_WC_REM_INV_REQ_ERR; 3375 case CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR: 3376 return IB_WC_WR_FLUSH_ERR; 3377 case CQ_RES_RC_STATUS_HW_FLUSH_ERR: 3378 return IB_WC_WR_FLUSH_ERR; 3379 default: 3380 return IB_WC_GENERAL_ERR; 3381 } 3382 } 3383 3384 static void bnxt_re_process_req_wc(struct ib_wc *wc, struct bnxt_qplib_cqe *cqe) 3385 { 3386 switch (cqe->type) { 3387 case BNXT_QPLIB_SWQE_TYPE_SEND: 3388 wc->opcode = IB_WC_SEND; 3389 break; 3390 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM: 3391 wc->opcode = IB_WC_SEND; 3392 wc->wc_flags |= IB_WC_WITH_IMM; 3393 break; 3394 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV: 3395 wc->opcode = IB_WC_SEND; 3396 wc->wc_flags |= IB_WC_WITH_INVALIDATE; 3397 break; 3398 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE: 3399 wc->opcode = IB_WC_RDMA_WRITE; 3400 break; 3401 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM: 3402 wc->opcode = IB_WC_RDMA_WRITE; 3403 wc->wc_flags |= IB_WC_WITH_IMM; 3404 break; 3405 case BNXT_QPLIB_SWQE_TYPE_RDMA_READ: 3406 wc->opcode = IB_WC_RDMA_READ; 3407 break; 3408 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP: 3409 wc->opcode = IB_WC_COMP_SWAP; 3410 break; 3411 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD: 3412 wc->opcode = IB_WC_FETCH_ADD; 3413 break; 3414 case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV: 3415 wc->opcode = IB_WC_LOCAL_INV; 3416 break; 3417 case BNXT_QPLIB_SWQE_TYPE_REG_MR: 3418 wc->opcode = IB_WC_REG_MR; 3419 break; 3420 default: 3421 wc->opcode = IB_WC_SEND; 3422 break; 3423 } 3424 3425 wc->status = __req_to_ib_wc_status(cqe->status); 3426 } 3427 3428 static int bnxt_re_check_packet_type(u16 raweth_qp1_flags, 3429 u16 raweth_qp1_flags2) 3430 { 3431 bool is_ipv6 = false, is_ipv4 = false; 3432 3433 /* raweth_qp1_flags Bit 9-6 indicates itype */ 3434 if ((raweth_qp1_flags & CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS_ITYPE_ROCE) 3435 != CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS_ITYPE_ROCE) 3436 return -1; 3437 3438 if (raweth_qp1_flags2 & 3439 CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS2_IP_CS_CALC && 3440 raweth_qp1_flags2 & 3441 CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS2_L4_CS_CALC) { 3442 /* raweth_qp1_flags2 Bit 8 indicates ip_type. 0-v4 1 - v6 */ 3443 (raweth_qp1_flags2 & 3444 CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS2_IP_TYPE) ? 3445 (is_ipv6 = true) : (is_ipv4 = true); 3446 return ((is_ipv6) ? 3447 BNXT_RE_ROCEV2_IPV6_PACKET : 3448 BNXT_RE_ROCEV2_IPV4_PACKET); 3449 } else { 3450 return BNXT_RE_ROCE_V1_PACKET; 3451 } 3452 } 3453 3454 static int bnxt_re_to_ib_nw_type(int nw_type) 3455 { 3456 u8 nw_hdr_type = 0xFF; 3457 3458 switch (nw_type) { 3459 case BNXT_RE_ROCE_V1_PACKET: 3460 nw_hdr_type = RDMA_NETWORK_ROCE_V1; 3461 break; 3462 case BNXT_RE_ROCEV2_IPV4_PACKET: 3463 nw_hdr_type = RDMA_NETWORK_IPV4; 3464 break; 3465 case BNXT_RE_ROCEV2_IPV6_PACKET: 3466 nw_hdr_type = RDMA_NETWORK_IPV6; 3467 break; 3468 } 3469 return nw_hdr_type; 3470 } 3471 3472 static bool bnxt_re_is_loopback_packet(struct bnxt_re_dev *rdev, 3473 void *rq_hdr_buf) 3474 { 3475 u8 *tmp_buf = NULL; 3476 struct ethhdr *eth_hdr; 3477 u16 eth_type; 3478 bool rc = false; 3479 3480 tmp_buf = (u8 *)rq_hdr_buf; 3481 /* 3482 * If dest mac is not same as I/F mac, this could be a 3483 * loopback address or multicast address, check whether 3484 * it is a loopback packet 3485 */ 3486 if (!ether_addr_equal(tmp_buf, rdev->netdev->dev_addr)) { 3487 tmp_buf += 4; 3488 /* Check the ether type */ 3489 eth_hdr = (struct ethhdr *)tmp_buf; 3490 eth_type = ntohs(eth_hdr->h_proto); 3491 switch (eth_type) { 3492 case ETH_P_IBOE: 3493 rc = true; 3494 break; 3495 case ETH_P_IP: 3496 case ETH_P_IPV6: { 3497 u32 len; 3498 struct udphdr *udp_hdr; 3499 3500 len = (eth_type == ETH_P_IP ? sizeof(struct iphdr) : 3501 sizeof(struct ipv6hdr)); 3502 tmp_buf += sizeof(struct ethhdr) + len; 3503 udp_hdr = (struct udphdr *)tmp_buf; 3504 if (ntohs(udp_hdr->dest) == 3505 ROCE_V2_UDP_DPORT) 3506 rc = true; 3507 break; 3508 } 3509 default: 3510 break; 3511 } 3512 } 3513 3514 return rc; 3515 } 3516 3517 static int bnxt_re_process_raw_qp_pkt_rx(struct bnxt_re_qp *gsi_qp, 3518 struct bnxt_qplib_cqe *cqe) 3519 { 3520 struct bnxt_re_dev *rdev = gsi_qp->rdev; 3521 struct bnxt_re_sqp_entries *sqp_entry = NULL; 3522 struct bnxt_re_qp *gsi_sqp = rdev->gsi_ctx.gsi_sqp; 3523 dma_addr_t shrq_hdr_buf_map; 3524 struct ib_sge s_sge[2] = {}; 3525 struct ib_sge r_sge[2] = {}; 3526 struct bnxt_re_ah *gsi_sah; 3527 struct ib_recv_wr rwr = {}; 3528 dma_addr_t rq_hdr_buf_map; 3529 struct ib_ud_wr udwr = {}; 3530 struct ib_send_wr *swr; 3531 u32 skip_bytes = 0; 3532 int pkt_type = 0; 3533 void *rq_hdr_buf; 3534 u32 offset = 0; 3535 u32 tbl_idx; 3536 int rc; 3537 3538 swr = &udwr.wr; 3539 tbl_idx = cqe->wr_id; 3540 3541 rq_hdr_buf = gsi_qp->qplib_qp.rq_hdr_buf + 3542 (tbl_idx * gsi_qp->qplib_qp.rq_hdr_buf_size); 3543 rq_hdr_buf_map = bnxt_qplib_get_qp_buf_from_index(&gsi_qp->qplib_qp, 3544 tbl_idx); 3545 3546 /* Shadow QP header buffer */ 3547 shrq_hdr_buf_map = bnxt_qplib_get_qp_buf_from_index(&gsi_qp->qplib_qp, 3548 tbl_idx); 3549 sqp_entry = &rdev->gsi_ctx.sqp_tbl[tbl_idx]; 3550 3551 /* Store this cqe */ 3552 memcpy(&sqp_entry->cqe, cqe, sizeof(struct bnxt_qplib_cqe)); 3553 sqp_entry->qp1_qp = gsi_qp; 3554 3555 /* Find packet type from the cqe */ 3556 3557 pkt_type = bnxt_re_check_packet_type(cqe->raweth_qp1_flags, 3558 cqe->raweth_qp1_flags2); 3559 if (pkt_type < 0) { 3560 ibdev_err(&rdev->ibdev, "Invalid packet\n"); 3561 return -EINVAL; 3562 } 3563 3564 /* Adjust the offset for the user buffer and post in the rq */ 3565 3566 if (pkt_type == BNXT_RE_ROCEV2_IPV4_PACKET) 3567 offset = 20; 3568 3569 /* 3570 * QP1 loopback packet has 4 bytes of internal header before 3571 * ether header. Skip these four bytes. 3572 */ 3573 if (bnxt_re_is_loopback_packet(rdev, rq_hdr_buf)) 3574 skip_bytes = 4; 3575 3576 /* First send SGE . Skip the ether header*/ 3577 s_sge[0].addr = rq_hdr_buf_map + BNXT_QPLIB_MAX_QP1_RQ_ETH_HDR_SIZE 3578 + skip_bytes; 3579 s_sge[0].lkey = 0xFFFFFFFF; 3580 s_sge[0].length = offset ? BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV4 : 3581 BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV6; 3582 3583 /* Second Send SGE */ 3584 s_sge[1].addr = s_sge[0].addr + s_sge[0].length + 3585 BNXT_QPLIB_MAX_QP1_RQ_BDETH_HDR_SIZE; 3586 if (pkt_type != BNXT_RE_ROCE_V1_PACKET) 3587 s_sge[1].addr += 8; 3588 s_sge[1].lkey = 0xFFFFFFFF; 3589 s_sge[1].length = 256; 3590 3591 /* First recv SGE */ 3592 3593 r_sge[0].addr = shrq_hdr_buf_map; 3594 r_sge[0].lkey = 0xFFFFFFFF; 3595 r_sge[0].length = 40; 3596 3597 r_sge[1].addr = sqp_entry->sge.addr + offset; 3598 r_sge[1].lkey = sqp_entry->sge.lkey; 3599 r_sge[1].length = BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV6 + 256 - offset; 3600 3601 /* Create receive work request */ 3602 rwr.num_sge = 2; 3603 rwr.sg_list = r_sge; 3604 rwr.wr_id = tbl_idx; 3605 rwr.next = NULL; 3606 3607 rc = bnxt_re_post_recv_shadow_qp(rdev, gsi_sqp, &rwr); 3608 if (rc) { 3609 ibdev_err(&rdev->ibdev, 3610 "Failed to post Rx buffers to shadow QP"); 3611 return -ENOMEM; 3612 } 3613 3614 swr->num_sge = 2; 3615 swr->sg_list = s_sge; 3616 swr->wr_id = tbl_idx; 3617 swr->opcode = IB_WR_SEND; 3618 swr->next = NULL; 3619 gsi_sah = rdev->gsi_ctx.gsi_sah; 3620 udwr.ah = &gsi_sah->ib_ah; 3621 udwr.remote_qpn = gsi_sqp->qplib_qp.id; 3622 udwr.remote_qkey = gsi_sqp->qplib_qp.qkey; 3623 3624 /* post data received in the send queue */ 3625 return bnxt_re_post_send_shadow_qp(rdev, gsi_sqp, swr); 3626 } 3627 3628 static void bnxt_re_process_res_rawqp1_wc(struct ib_wc *wc, 3629 struct bnxt_qplib_cqe *cqe) 3630 { 3631 wc->opcode = IB_WC_RECV; 3632 wc->status = __rawqp1_to_ib_wc_status(cqe->status); 3633 wc->wc_flags |= IB_WC_GRH; 3634 } 3635 3636 static bool bnxt_re_check_if_vlan_valid(struct bnxt_re_dev *rdev, 3637 u16 vlan_id) 3638 { 3639 /* 3640 * Check if the vlan is configured in the host. If not configured, it 3641 * can be a transparent VLAN. So dont report the vlan id. 3642 */ 3643 if (!__vlan_find_dev_deep_rcu(rdev->netdev, 3644 htons(ETH_P_8021Q), vlan_id)) 3645 return false; 3646 return true; 3647 } 3648 3649 static bool bnxt_re_is_vlan_pkt(struct bnxt_qplib_cqe *orig_cqe, 3650 u16 *vid, u8 *sl) 3651 { 3652 bool ret = false; 3653 u32 metadata; 3654 u16 tpid; 3655 3656 metadata = orig_cqe->raweth_qp1_metadata; 3657 if (orig_cqe->raweth_qp1_flags2 & 3658 CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS2_META_FORMAT_VLAN) { 3659 tpid = ((metadata & 3660 CQ_RES_RAWETH_QP1_RAWETH_QP1_METADATA_TPID_MASK) >> 3661 CQ_RES_RAWETH_QP1_RAWETH_QP1_METADATA_TPID_SFT); 3662 if (tpid == ETH_P_8021Q) { 3663 *vid = metadata & 3664 CQ_RES_RAWETH_QP1_RAWETH_QP1_METADATA_VID_MASK; 3665 *sl = (metadata & 3666 CQ_RES_RAWETH_QP1_RAWETH_QP1_METADATA_PRI_MASK) >> 3667 CQ_RES_RAWETH_QP1_RAWETH_QP1_METADATA_PRI_SFT; 3668 ret = true; 3669 } 3670 } 3671 3672 return ret; 3673 } 3674 3675 static void bnxt_re_process_res_rc_wc(struct ib_wc *wc, 3676 struct bnxt_qplib_cqe *cqe) 3677 { 3678 wc->opcode = IB_WC_RECV; 3679 wc->status = __rc_to_ib_wc_status(cqe->status); 3680 3681 if (cqe->flags & CQ_RES_RC_FLAGS_IMM) 3682 wc->wc_flags |= IB_WC_WITH_IMM; 3683 if (cqe->flags & CQ_RES_RC_FLAGS_INV) 3684 wc->wc_flags |= IB_WC_WITH_INVALIDATE; 3685 if ((cqe->flags & (CQ_RES_RC_FLAGS_RDMA | CQ_RES_RC_FLAGS_IMM)) == 3686 (CQ_RES_RC_FLAGS_RDMA | CQ_RES_RC_FLAGS_IMM)) 3687 wc->opcode = IB_WC_RECV_RDMA_WITH_IMM; 3688 } 3689 3690 static void bnxt_re_process_res_shadow_qp_wc(struct bnxt_re_qp *gsi_sqp, 3691 struct ib_wc *wc, 3692 struct bnxt_qplib_cqe *cqe) 3693 { 3694 struct bnxt_re_dev *rdev = gsi_sqp->rdev; 3695 struct bnxt_re_qp *gsi_qp = NULL; 3696 struct bnxt_qplib_cqe *orig_cqe = NULL; 3697 struct bnxt_re_sqp_entries *sqp_entry = NULL; 3698 int nw_type; 3699 u32 tbl_idx; 3700 u16 vlan_id; 3701 u8 sl; 3702 3703 tbl_idx = cqe->wr_id; 3704 3705 sqp_entry = &rdev->gsi_ctx.sqp_tbl[tbl_idx]; 3706 gsi_qp = sqp_entry->qp1_qp; 3707 orig_cqe = &sqp_entry->cqe; 3708 3709 wc->wr_id = sqp_entry->wrid; 3710 wc->byte_len = orig_cqe->length; 3711 wc->qp = &gsi_qp->ib_qp; 3712 3713 wc->ex.imm_data = cpu_to_be32(orig_cqe->immdata); 3714 wc->src_qp = orig_cqe->src_qp; 3715 memcpy(wc->smac, orig_cqe->smac, ETH_ALEN); 3716 if (bnxt_re_is_vlan_pkt(orig_cqe, &vlan_id, &sl)) { 3717 if (bnxt_re_check_if_vlan_valid(rdev, vlan_id)) { 3718 wc->vlan_id = vlan_id; 3719 wc->sl = sl; 3720 wc->wc_flags |= IB_WC_WITH_VLAN; 3721 } 3722 } 3723 wc->port_num = 1; 3724 wc->vendor_err = orig_cqe->status; 3725 3726 wc->opcode = IB_WC_RECV; 3727 wc->status = __rawqp1_to_ib_wc_status(orig_cqe->status); 3728 wc->wc_flags |= IB_WC_GRH; 3729 3730 nw_type = bnxt_re_check_packet_type(orig_cqe->raweth_qp1_flags, 3731 orig_cqe->raweth_qp1_flags2); 3732 if (nw_type >= 0) { 3733 wc->network_hdr_type = bnxt_re_to_ib_nw_type(nw_type); 3734 wc->wc_flags |= IB_WC_WITH_NETWORK_HDR_TYPE; 3735 } 3736 } 3737 3738 static void bnxt_re_process_res_ud_wc(struct bnxt_re_qp *qp, 3739 struct ib_wc *wc, 3740 struct bnxt_qplib_cqe *cqe) 3741 { 3742 struct bnxt_re_dev *rdev; 3743 u16 vlan_id = 0; 3744 u8 nw_type; 3745 3746 rdev = qp->rdev; 3747 wc->opcode = IB_WC_RECV; 3748 wc->status = __rc_to_ib_wc_status(cqe->status); 3749 3750 if (cqe->flags & CQ_RES_UD_FLAGS_IMM) 3751 wc->wc_flags |= IB_WC_WITH_IMM; 3752 /* report only on GSI QP for Thor */ 3753 if (qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_GSI) { 3754 wc->wc_flags |= IB_WC_GRH; 3755 memcpy(wc->smac, cqe->smac, ETH_ALEN); 3756 wc->wc_flags |= IB_WC_WITH_SMAC; 3757 if (cqe->flags & CQ_RES_UD_FLAGS_META_FORMAT_VLAN) { 3758 vlan_id = (cqe->cfa_meta & 0xFFF); 3759 } 3760 /* Mark only if vlan_id is non zero */ 3761 if (vlan_id && bnxt_re_check_if_vlan_valid(rdev, vlan_id)) { 3762 wc->vlan_id = vlan_id; 3763 wc->wc_flags |= IB_WC_WITH_VLAN; 3764 } 3765 nw_type = (cqe->flags & CQ_RES_UD_FLAGS_ROCE_IP_VER_MASK) >> 3766 CQ_RES_UD_FLAGS_ROCE_IP_VER_SFT; 3767 wc->network_hdr_type = bnxt_re_to_ib_nw_type(nw_type); 3768 wc->wc_flags |= IB_WC_WITH_NETWORK_HDR_TYPE; 3769 } 3770 3771 } 3772 3773 static int send_phantom_wqe(struct bnxt_re_qp *qp) 3774 { 3775 struct bnxt_qplib_qp *lib_qp = &qp->qplib_qp; 3776 unsigned long flags; 3777 int rc; 3778 3779 spin_lock_irqsave(&qp->sq_lock, flags); 3780 3781 rc = bnxt_re_bind_fence_mw(lib_qp); 3782 if (!rc) { 3783 lib_qp->sq.phantom_wqe_cnt++; 3784 ibdev_dbg(&qp->rdev->ibdev, 3785 "qp %#x sq->prod %#x sw_prod %#x phantom_wqe_cnt %d\n", 3786 lib_qp->id, lib_qp->sq.hwq.prod, 3787 HWQ_CMP(lib_qp->sq.hwq.prod, &lib_qp->sq.hwq), 3788 lib_qp->sq.phantom_wqe_cnt); 3789 } 3790 3791 spin_unlock_irqrestore(&qp->sq_lock, flags); 3792 return rc; 3793 } 3794 3795 int bnxt_re_poll_cq(struct ib_cq *ib_cq, int num_entries, struct ib_wc *wc) 3796 { 3797 struct bnxt_re_cq *cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); 3798 struct bnxt_re_qp *qp, *sh_qp; 3799 struct bnxt_qplib_cqe *cqe; 3800 int i, ncqe, budget; 3801 struct bnxt_qplib_q *sq; 3802 struct bnxt_qplib_qp *lib_qp; 3803 u32 tbl_idx; 3804 struct bnxt_re_sqp_entries *sqp_entry = NULL; 3805 unsigned long flags; 3806 3807 /* User CQ; the only processing we do is to 3808 * complete any pending CQ resize operation. 3809 */ 3810 if (cq->umem) { 3811 if (cq->resize_umem) 3812 bnxt_re_resize_cq_complete(cq); 3813 return 0; 3814 } 3815 3816 spin_lock_irqsave(&cq->cq_lock, flags); 3817 budget = min_t(u32, num_entries, cq->max_cql); 3818 num_entries = budget; 3819 if (!cq->cql) { 3820 ibdev_err(&cq->rdev->ibdev, "POLL CQ : no CQL to use"); 3821 goto exit; 3822 } 3823 cqe = &cq->cql[0]; 3824 while (budget) { 3825 lib_qp = NULL; 3826 ncqe = bnxt_qplib_poll_cq(&cq->qplib_cq, cqe, budget, &lib_qp); 3827 if (lib_qp) { 3828 sq = &lib_qp->sq; 3829 if (sq->send_phantom) { 3830 qp = container_of(lib_qp, 3831 struct bnxt_re_qp, qplib_qp); 3832 if (send_phantom_wqe(qp) == -ENOMEM) 3833 ibdev_err(&cq->rdev->ibdev, 3834 "Phantom failed! Scheduled to send again\n"); 3835 else 3836 sq->send_phantom = false; 3837 } 3838 } 3839 if (ncqe < budget) 3840 ncqe += bnxt_qplib_process_flush_list(&cq->qplib_cq, 3841 cqe + ncqe, 3842 budget - ncqe); 3843 3844 if (!ncqe) 3845 break; 3846 3847 for (i = 0; i < ncqe; i++, cqe++) { 3848 /* Transcribe each qplib_wqe back to ib_wc */ 3849 memset(wc, 0, sizeof(*wc)); 3850 3851 wc->wr_id = cqe->wr_id; 3852 wc->byte_len = cqe->length; 3853 qp = container_of 3854 ((struct bnxt_qplib_qp *) 3855 (unsigned long)(cqe->qp_handle), 3856 struct bnxt_re_qp, qplib_qp); 3857 wc->qp = &qp->ib_qp; 3858 if (cqe->flags & CQ_RES_RC_FLAGS_IMM) 3859 wc->ex.imm_data = cpu_to_be32(cqe->immdata); 3860 else 3861 wc->ex.invalidate_rkey = cqe->invrkey; 3862 wc->src_qp = cqe->src_qp; 3863 memcpy(wc->smac, cqe->smac, ETH_ALEN); 3864 wc->port_num = 1; 3865 wc->vendor_err = cqe->status; 3866 3867 switch (cqe->opcode) { 3868 case CQ_BASE_CQE_TYPE_REQ: 3869 sh_qp = qp->rdev->gsi_ctx.gsi_sqp; 3870 if (sh_qp && 3871 qp->qplib_qp.id == sh_qp->qplib_qp.id) { 3872 /* Handle this completion with 3873 * the stored completion 3874 */ 3875 memset(wc, 0, sizeof(*wc)); 3876 continue; 3877 } 3878 bnxt_re_process_req_wc(wc, cqe); 3879 break; 3880 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1: 3881 if (!cqe->status) { 3882 int rc = 0; 3883 3884 rc = bnxt_re_process_raw_qp_pkt_rx 3885 (qp, cqe); 3886 if (!rc) { 3887 memset(wc, 0, sizeof(*wc)); 3888 continue; 3889 } 3890 cqe->status = -1; 3891 } 3892 /* Errors need not be looped back. 3893 * But change the wr_id to the one 3894 * stored in the table 3895 */ 3896 tbl_idx = cqe->wr_id; 3897 sqp_entry = &cq->rdev->gsi_ctx.sqp_tbl[tbl_idx]; 3898 wc->wr_id = sqp_entry->wrid; 3899 bnxt_re_process_res_rawqp1_wc(wc, cqe); 3900 break; 3901 case CQ_BASE_CQE_TYPE_RES_RC: 3902 bnxt_re_process_res_rc_wc(wc, cqe); 3903 break; 3904 case CQ_BASE_CQE_TYPE_RES_UD: 3905 sh_qp = qp->rdev->gsi_ctx.gsi_sqp; 3906 if (sh_qp && 3907 qp->qplib_qp.id == sh_qp->qplib_qp.id) { 3908 /* Handle this completion with 3909 * the stored completion 3910 */ 3911 if (cqe->status) { 3912 continue; 3913 } else { 3914 bnxt_re_process_res_shadow_qp_wc 3915 (qp, wc, cqe); 3916 break; 3917 } 3918 } 3919 bnxt_re_process_res_ud_wc(qp, wc, cqe); 3920 break; 3921 default: 3922 ibdev_err(&cq->rdev->ibdev, 3923 "POLL CQ : type 0x%x not handled", 3924 cqe->opcode); 3925 continue; 3926 } 3927 wc++; 3928 budget--; 3929 } 3930 } 3931 exit: 3932 spin_unlock_irqrestore(&cq->cq_lock, flags); 3933 return num_entries - budget; 3934 } 3935 3936 int bnxt_re_req_notify_cq(struct ib_cq *ib_cq, 3937 enum ib_cq_notify_flags ib_cqn_flags) 3938 { 3939 struct bnxt_re_cq *cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); 3940 int type = 0, rc = 0; 3941 unsigned long flags; 3942 3943 spin_lock_irqsave(&cq->cq_lock, flags); 3944 /* Trigger on the very next completion */ 3945 if (ib_cqn_flags & IB_CQ_NEXT_COMP) 3946 type = DBC_DBC_TYPE_CQ_ARMALL; 3947 /* Trigger on the next solicited completion */ 3948 else if (ib_cqn_flags & IB_CQ_SOLICITED) 3949 type = DBC_DBC_TYPE_CQ_ARMSE; 3950 3951 /* Poll to see if there are missed events */ 3952 if ((ib_cqn_flags & IB_CQ_REPORT_MISSED_EVENTS) && 3953 !(bnxt_qplib_is_cq_empty(&cq->qplib_cq))) { 3954 rc = 1; 3955 goto exit; 3956 } 3957 bnxt_qplib_req_notify_cq(&cq->qplib_cq, type); 3958 3959 exit: 3960 spin_unlock_irqrestore(&cq->cq_lock, flags); 3961 return rc; 3962 } 3963 3964 /* Memory Regions */ 3965 struct ib_mr *bnxt_re_get_dma_mr(struct ib_pd *ib_pd, int mr_access_flags) 3966 { 3967 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 3968 struct bnxt_re_dev *rdev = pd->rdev; 3969 struct bnxt_re_mr *mr; 3970 u32 active_mrs; 3971 int rc; 3972 3973 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 3974 if (!mr) 3975 return ERR_PTR(-ENOMEM); 3976 3977 mr->rdev = rdev; 3978 mr->qplib_mr.pd = &pd->qplib_pd; 3979 mr->qplib_mr.access_flags = __from_ib_access_flags(mr_access_flags); 3980 mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_PMR; 3981 3982 if (mr_access_flags & IB_ACCESS_RELAXED_ORDERING) 3983 bnxt_re_check_and_set_relaxed_ordering(rdev, &mr->qplib_mr); 3984 3985 /* Allocate and register 0 as the address */ 3986 rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr); 3987 if (rc) 3988 goto fail; 3989 3990 mr->qplib_mr.hwq.level = PBL_LVL_MAX; 3991 mr->qplib_mr.total_size = -1; /* Infinte length */ 3992 rc = bnxt_qplib_reg_mr(&rdev->qplib_res, &mr->qplib_mr, NULL, 0, 3993 PAGE_SIZE); 3994 if (rc) 3995 goto fail_mr; 3996 3997 mr->ib_mr.lkey = mr->qplib_mr.lkey; 3998 if (mr_access_flags & (IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ | 3999 IB_ACCESS_REMOTE_ATOMIC)) 4000 mr->ib_mr.rkey = mr->ib_mr.lkey; 4001 active_mrs = atomic_inc_return(&rdev->stats.res.mr_count); 4002 if (active_mrs > rdev->stats.res.mr_watermark) 4003 rdev->stats.res.mr_watermark = active_mrs; 4004 4005 return &mr->ib_mr; 4006 4007 fail_mr: 4008 bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); 4009 fail: 4010 kfree(mr); 4011 return ERR_PTR(rc); 4012 } 4013 4014 int bnxt_re_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata) 4015 { 4016 struct bnxt_re_mr *mr = container_of(ib_mr, struct bnxt_re_mr, ib_mr); 4017 struct bnxt_re_dev *rdev = mr->rdev; 4018 int rc; 4019 4020 rc = bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); 4021 if (rc) { 4022 ibdev_err(&rdev->ibdev, "Dereg MR failed: %#x\n", rc); 4023 return rc; 4024 } 4025 4026 if (mr->pages) { 4027 rc = bnxt_qplib_free_fast_reg_page_list(&rdev->qplib_res, 4028 &mr->qplib_frpl); 4029 kfree(mr->pages); 4030 mr->npages = 0; 4031 mr->pages = NULL; 4032 } 4033 ib_umem_release(mr->ib_umem); 4034 4035 kfree(mr); 4036 atomic_dec(&rdev->stats.res.mr_count); 4037 return rc; 4038 } 4039 4040 static int bnxt_re_set_page(struct ib_mr *ib_mr, u64 addr) 4041 { 4042 struct bnxt_re_mr *mr = container_of(ib_mr, struct bnxt_re_mr, ib_mr); 4043 4044 if (unlikely(mr->npages == mr->qplib_frpl.max_pg_ptrs)) 4045 return -ENOMEM; 4046 4047 mr->pages[mr->npages++] = addr; 4048 return 0; 4049 } 4050 4051 int bnxt_re_map_mr_sg(struct ib_mr *ib_mr, struct scatterlist *sg, int sg_nents, 4052 unsigned int *sg_offset) 4053 { 4054 struct bnxt_re_mr *mr = container_of(ib_mr, struct bnxt_re_mr, ib_mr); 4055 4056 mr->npages = 0; 4057 return ib_sg_to_pages(ib_mr, sg, sg_nents, sg_offset, bnxt_re_set_page); 4058 } 4059 4060 struct ib_mr *bnxt_re_alloc_mr(struct ib_pd *ib_pd, enum ib_mr_type type, 4061 u32 max_num_sg) 4062 { 4063 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 4064 struct bnxt_re_dev *rdev = pd->rdev; 4065 struct bnxt_re_mr *mr = NULL; 4066 u32 active_mrs; 4067 int rc; 4068 4069 if (type != IB_MR_TYPE_MEM_REG) { 4070 ibdev_dbg(&rdev->ibdev, "MR type 0x%x not supported", type); 4071 return ERR_PTR(-EINVAL); 4072 } 4073 if (max_num_sg > MAX_PBL_LVL_1_PGS) 4074 return ERR_PTR(-EINVAL); 4075 4076 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 4077 if (!mr) 4078 return ERR_PTR(-ENOMEM); 4079 4080 mr->rdev = rdev; 4081 mr->qplib_mr.pd = &pd->qplib_pd; 4082 mr->qplib_mr.access_flags = BNXT_QPLIB_FR_PMR; 4083 mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_PMR; 4084 4085 rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr); 4086 if (rc) 4087 goto bail; 4088 4089 mr->ib_mr.lkey = mr->qplib_mr.lkey; 4090 mr->ib_mr.rkey = mr->ib_mr.lkey; 4091 4092 mr->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL); 4093 if (!mr->pages) { 4094 rc = -ENOMEM; 4095 goto fail; 4096 } 4097 rc = bnxt_qplib_alloc_fast_reg_page_list(&rdev->qplib_res, 4098 &mr->qplib_frpl, max_num_sg); 4099 if (rc) { 4100 ibdev_err(&rdev->ibdev, 4101 "Failed to allocate HW FR page list"); 4102 goto fail_mr; 4103 } 4104 4105 active_mrs = atomic_inc_return(&rdev->stats.res.mr_count); 4106 if (active_mrs > rdev->stats.res.mr_watermark) 4107 rdev->stats.res.mr_watermark = active_mrs; 4108 return &mr->ib_mr; 4109 4110 fail_mr: 4111 kfree(mr->pages); 4112 fail: 4113 bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); 4114 bail: 4115 kfree(mr); 4116 return ERR_PTR(rc); 4117 } 4118 4119 struct ib_mw *bnxt_re_alloc_mw(struct ib_pd *ib_pd, enum ib_mw_type type, 4120 struct ib_udata *udata) 4121 { 4122 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 4123 struct bnxt_re_dev *rdev = pd->rdev; 4124 struct bnxt_re_mw *mw; 4125 u32 active_mws; 4126 int rc; 4127 4128 mw = kzalloc(sizeof(*mw), GFP_KERNEL); 4129 if (!mw) 4130 return ERR_PTR(-ENOMEM); 4131 mw->rdev = rdev; 4132 mw->qplib_mw.pd = &pd->qplib_pd; 4133 4134 mw->qplib_mw.type = (type == IB_MW_TYPE_1 ? 4135 CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE1 : 4136 CMDQ_ALLOCATE_MRW_MRW_FLAGS_MW_TYPE2B); 4137 rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mw->qplib_mw); 4138 if (rc) { 4139 ibdev_err(&rdev->ibdev, "Allocate MW failed!"); 4140 goto fail; 4141 } 4142 mw->ib_mw.rkey = mw->qplib_mw.rkey; 4143 4144 active_mws = atomic_inc_return(&rdev->stats.res.mw_count); 4145 if (active_mws > rdev->stats.res.mw_watermark) 4146 rdev->stats.res.mw_watermark = active_mws; 4147 return &mw->ib_mw; 4148 4149 fail: 4150 kfree(mw); 4151 return ERR_PTR(rc); 4152 } 4153 4154 int bnxt_re_dealloc_mw(struct ib_mw *ib_mw) 4155 { 4156 struct bnxt_re_mw *mw = container_of(ib_mw, struct bnxt_re_mw, ib_mw); 4157 struct bnxt_re_dev *rdev = mw->rdev; 4158 int rc; 4159 4160 rc = bnxt_qplib_free_mrw(&rdev->qplib_res, &mw->qplib_mw); 4161 if (rc) { 4162 ibdev_err(&rdev->ibdev, "Free MW failed: %#x\n", rc); 4163 return rc; 4164 } 4165 4166 kfree(mw); 4167 atomic_dec(&rdev->stats.res.mw_count); 4168 return rc; 4169 } 4170 4171 static struct ib_mr *__bnxt_re_user_reg_mr(struct ib_pd *ib_pd, u64 length, u64 virt_addr, 4172 int mr_access_flags, struct ib_umem *umem) 4173 { 4174 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 4175 struct bnxt_re_dev *rdev = pd->rdev; 4176 unsigned long page_size; 4177 struct bnxt_re_mr *mr; 4178 int umem_pgs, rc; 4179 u32 active_mrs; 4180 4181 if (length > BNXT_RE_MAX_MR_SIZE) { 4182 ibdev_err(&rdev->ibdev, "MR Size: %lld > Max supported:%lld\n", 4183 length, BNXT_RE_MAX_MR_SIZE); 4184 return ERR_PTR(-ENOMEM); 4185 } 4186 4187 page_size = ib_umem_find_best_pgsz(umem, BNXT_RE_PAGE_SIZE_SUPPORTED, virt_addr); 4188 if (!page_size) { 4189 ibdev_err(&rdev->ibdev, "umem page size unsupported!"); 4190 return ERR_PTR(-EINVAL); 4191 } 4192 4193 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 4194 if (!mr) 4195 return ERR_PTR(-ENOMEM); 4196 4197 mr->rdev = rdev; 4198 mr->qplib_mr.pd = &pd->qplib_pd; 4199 mr->qplib_mr.access_flags = __from_ib_access_flags(mr_access_flags); 4200 mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_MR; 4201 4202 if (!_is_alloc_mr_unified(rdev->dev_attr.dev_cap_flags)) { 4203 rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr); 4204 if (rc) { 4205 ibdev_err(&rdev->ibdev, "Failed to allocate MR rc = %d", rc); 4206 rc = -EIO; 4207 goto free_mr; 4208 } 4209 /* The fixed portion of the rkey is the same as the lkey */ 4210 mr->ib_mr.rkey = mr->qplib_mr.rkey; 4211 } else { 4212 mr->qplib_mr.flags = CMDQ_REGISTER_MR_FLAGS_ALLOC_MR; 4213 } 4214 mr->ib_umem = umem; 4215 mr->qplib_mr.va = virt_addr; 4216 mr->qplib_mr.total_size = length; 4217 4218 if (mr_access_flags & IB_ACCESS_RELAXED_ORDERING) 4219 bnxt_re_check_and_set_relaxed_ordering(rdev, &mr->qplib_mr); 4220 4221 umem_pgs = ib_umem_num_dma_blocks(umem, page_size); 4222 rc = bnxt_qplib_reg_mr(&rdev->qplib_res, &mr->qplib_mr, umem, 4223 umem_pgs, page_size); 4224 if (rc) { 4225 ibdev_err(&rdev->ibdev, "Failed to register user MR - rc = %d\n", rc); 4226 rc = -EIO; 4227 goto free_mrw; 4228 } 4229 4230 mr->ib_mr.lkey = mr->qplib_mr.lkey; 4231 mr->ib_mr.rkey = mr->qplib_mr.lkey; 4232 active_mrs = atomic_inc_return(&rdev->stats.res.mr_count); 4233 if (active_mrs > rdev->stats.res.mr_watermark) 4234 rdev->stats.res.mr_watermark = active_mrs; 4235 4236 return &mr->ib_mr; 4237 4238 free_mrw: 4239 bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); 4240 free_mr: 4241 kfree(mr); 4242 return ERR_PTR(rc); 4243 } 4244 4245 struct ib_mr *bnxt_re_reg_user_mr(struct ib_pd *ib_pd, u64 start, u64 length, 4246 u64 virt_addr, int mr_access_flags, 4247 struct ib_udata *udata) 4248 { 4249 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 4250 struct bnxt_re_dev *rdev = pd->rdev; 4251 struct ib_umem *umem; 4252 struct ib_mr *ib_mr; 4253 4254 umem = ib_umem_get(&rdev->ibdev, start, length, mr_access_flags); 4255 if (IS_ERR(umem)) 4256 return ERR_CAST(umem); 4257 4258 ib_mr = __bnxt_re_user_reg_mr(ib_pd, length, virt_addr, mr_access_flags, umem); 4259 if (IS_ERR(ib_mr)) 4260 ib_umem_release(umem); 4261 return ib_mr; 4262 } 4263 4264 struct ib_mr *bnxt_re_reg_user_mr_dmabuf(struct ib_pd *ib_pd, u64 start, 4265 u64 length, u64 virt_addr, int fd, 4266 int mr_access_flags, 4267 struct uverbs_attr_bundle *attrs) 4268 { 4269 struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); 4270 struct bnxt_re_dev *rdev = pd->rdev; 4271 struct ib_umem_dmabuf *umem_dmabuf; 4272 struct ib_umem *umem; 4273 struct ib_mr *ib_mr; 4274 4275 umem_dmabuf = ib_umem_dmabuf_get_pinned(&rdev->ibdev, start, length, 4276 fd, mr_access_flags); 4277 if (IS_ERR(umem_dmabuf)) 4278 return ERR_CAST(umem_dmabuf); 4279 4280 umem = &umem_dmabuf->umem; 4281 4282 ib_mr = __bnxt_re_user_reg_mr(ib_pd, length, virt_addr, mr_access_flags, umem); 4283 if (IS_ERR(ib_mr)) 4284 ib_umem_release(umem); 4285 return ib_mr; 4286 } 4287 4288 int bnxt_re_alloc_ucontext(struct ib_ucontext *ctx, struct ib_udata *udata) 4289 { 4290 struct ib_device *ibdev = ctx->device; 4291 struct bnxt_re_ucontext *uctx = 4292 container_of(ctx, struct bnxt_re_ucontext, ib_uctx); 4293 struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); 4294 struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; 4295 struct bnxt_re_user_mmap_entry *entry; 4296 struct bnxt_re_uctx_resp resp = {}; 4297 struct bnxt_re_uctx_req ureq = {}; 4298 u32 chip_met_rev_num = 0; 4299 int rc; 4300 4301 ibdev_dbg(ibdev, "ABI version requested %u", ibdev->ops.uverbs_abi_ver); 4302 4303 if (ibdev->ops.uverbs_abi_ver != BNXT_RE_ABI_VERSION) { 4304 ibdev_dbg(ibdev, " is different from the device %d ", 4305 BNXT_RE_ABI_VERSION); 4306 return -EPERM; 4307 } 4308 4309 uctx->rdev = rdev; 4310 4311 uctx->shpg = (void *)__get_free_page(GFP_KERNEL); 4312 if (!uctx->shpg) { 4313 rc = -ENOMEM; 4314 goto fail; 4315 } 4316 spin_lock_init(&uctx->sh_lock); 4317 4318 resp.comp_mask = BNXT_RE_UCNTX_CMASK_HAVE_CCTX; 4319 chip_met_rev_num = rdev->chip_ctx->chip_num; 4320 chip_met_rev_num |= ((u32)rdev->chip_ctx->chip_rev & 0xFF) << 4321 BNXT_RE_CHIP_ID0_CHIP_REV_SFT; 4322 chip_met_rev_num |= ((u32)rdev->chip_ctx->chip_metal & 0xFF) << 4323 BNXT_RE_CHIP_ID0_CHIP_MET_SFT; 4324 resp.chip_id0 = chip_met_rev_num; 4325 /*Temp, Use xa_alloc instead */ 4326 resp.dev_id = rdev->en_dev->pdev->devfn; 4327 resp.max_qp = rdev->qplib_ctx.qpc_count; 4328 resp.pg_size = PAGE_SIZE; 4329 resp.cqe_sz = sizeof(struct cq_base); 4330 resp.max_cqd = dev_attr->max_cq_wqes; 4331 4332 if (rdev->chip_ctx->modes.db_push) 4333 resp.comp_mask |= BNXT_RE_UCNTX_CMASK_WC_DPI_ENABLED; 4334 4335 entry = bnxt_re_mmap_entry_insert(uctx, 0, BNXT_RE_MMAP_SH_PAGE, NULL); 4336 if (!entry) { 4337 rc = -ENOMEM; 4338 goto cfail; 4339 } 4340 uctx->shpage_mmap = &entry->rdma_entry; 4341 if (rdev->pacing.dbr_pacing) 4342 resp.comp_mask |= BNXT_RE_UCNTX_CMASK_DBR_PACING_ENABLED; 4343 4344 if (_is_host_msn_table(rdev->qplib_res.dattr->dev_cap_flags2)) 4345 resp.comp_mask |= BNXT_RE_UCNTX_CMASK_MSN_TABLE_ENABLED; 4346 4347 if (udata->inlen >= sizeof(ureq)) { 4348 rc = ib_copy_from_udata(&ureq, udata, min(udata->inlen, sizeof(ureq))); 4349 if (rc) 4350 goto cfail; 4351 if (ureq.comp_mask & BNXT_RE_COMP_MASK_REQ_UCNTX_POW2_SUPPORT) { 4352 resp.comp_mask |= BNXT_RE_UCNTX_CMASK_POW2_DISABLED; 4353 uctx->cmask |= BNXT_RE_UCNTX_CAP_POW2_DISABLED; 4354 } 4355 if (ureq.comp_mask & BNXT_RE_COMP_MASK_REQ_UCNTX_VAR_WQE_SUPPORT) { 4356 resp.comp_mask |= BNXT_RE_UCNTX_CMASK_HAVE_MODE; 4357 resp.mode = rdev->chip_ctx->modes.wqe_mode; 4358 if (resp.mode == BNXT_QPLIB_WQE_MODE_VARIABLE) 4359 uctx->cmask |= BNXT_RE_UCNTX_CAP_VAR_WQE_ENABLED; 4360 } 4361 } 4362 4363 rc = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp))); 4364 if (rc) { 4365 ibdev_err(ibdev, "Failed to copy user context"); 4366 rc = -EFAULT; 4367 goto cfail; 4368 } 4369 4370 return 0; 4371 cfail: 4372 free_page((unsigned long)uctx->shpg); 4373 uctx->shpg = NULL; 4374 fail: 4375 return rc; 4376 } 4377 4378 void bnxt_re_dealloc_ucontext(struct ib_ucontext *ib_uctx) 4379 { 4380 struct bnxt_re_ucontext *uctx = container_of(ib_uctx, 4381 struct bnxt_re_ucontext, 4382 ib_uctx); 4383 4384 struct bnxt_re_dev *rdev = uctx->rdev; 4385 4386 rdma_user_mmap_entry_remove(uctx->shpage_mmap); 4387 uctx->shpage_mmap = NULL; 4388 if (uctx->shpg) 4389 free_page((unsigned long)uctx->shpg); 4390 4391 if (uctx->dpi.dbr) { 4392 /* Free DPI only if this is the first PD allocated by the 4393 * application and mark the context dpi as NULL 4394 */ 4395 bnxt_qplib_dealloc_dpi(&rdev->qplib_res, &uctx->dpi); 4396 uctx->dpi.dbr = NULL; 4397 } 4398 } 4399 4400 static struct bnxt_re_cq *bnxt_re_search_for_cq(struct bnxt_re_dev *rdev, u32 cq_id) 4401 { 4402 struct bnxt_re_cq *cq = NULL, *tmp_cq; 4403 4404 hash_for_each_possible(rdev->cq_hash, tmp_cq, hash_entry, cq_id) { 4405 if (tmp_cq->qplib_cq.id == cq_id) { 4406 cq = tmp_cq; 4407 break; 4408 } 4409 } 4410 return cq; 4411 } 4412 4413 static struct bnxt_re_srq *bnxt_re_search_for_srq(struct bnxt_re_dev *rdev, u32 srq_id) 4414 { 4415 struct bnxt_re_srq *srq = NULL, *tmp_srq; 4416 4417 hash_for_each_possible(rdev->srq_hash, tmp_srq, hash_entry, srq_id) { 4418 if (tmp_srq->qplib_srq.id == srq_id) { 4419 srq = tmp_srq; 4420 break; 4421 } 4422 } 4423 return srq; 4424 } 4425 4426 /* Helper function to mmap the virtual memory from user app */ 4427 int bnxt_re_mmap(struct ib_ucontext *ib_uctx, struct vm_area_struct *vma) 4428 { 4429 struct bnxt_re_ucontext *uctx = container_of(ib_uctx, 4430 struct bnxt_re_ucontext, 4431 ib_uctx); 4432 struct bnxt_re_user_mmap_entry *bnxt_entry; 4433 struct rdma_user_mmap_entry *rdma_entry; 4434 int ret = 0; 4435 u64 pfn; 4436 4437 rdma_entry = rdma_user_mmap_entry_get(&uctx->ib_uctx, vma); 4438 if (!rdma_entry) 4439 return -EINVAL; 4440 4441 bnxt_entry = container_of(rdma_entry, struct bnxt_re_user_mmap_entry, 4442 rdma_entry); 4443 4444 switch (bnxt_entry->mmap_flag) { 4445 case BNXT_RE_MMAP_WC_DB: 4446 pfn = bnxt_entry->mem_offset >> PAGE_SHIFT; 4447 ret = rdma_user_mmap_io(ib_uctx, vma, pfn, PAGE_SIZE, 4448 pgprot_writecombine(vma->vm_page_prot), 4449 rdma_entry); 4450 break; 4451 case BNXT_RE_MMAP_UC_DB: 4452 pfn = bnxt_entry->mem_offset >> PAGE_SHIFT; 4453 ret = rdma_user_mmap_io(ib_uctx, vma, pfn, PAGE_SIZE, 4454 pgprot_noncached(vma->vm_page_prot), 4455 rdma_entry); 4456 break; 4457 case BNXT_RE_MMAP_SH_PAGE: 4458 ret = vm_insert_page(vma, vma->vm_start, virt_to_page(uctx->shpg)); 4459 break; 4460 case BNXT_RE_MMAP_DBR_BAR: 4461 pfn = bnxt_entry->mem_offset >> PAGE_SHIFT; 4462 ret = rdma_user_mmap_io(ib_uctx, vma, pfn, PAGE_SIZE, 4463 pgprot_noncached(vma->vm_page_prot), 4464 rdma_entry); 4465 break; 4466 case BNXT_RE_MMAP_DBR_PAGE: 4467 case BNXT_RE_MMAP_TOGGLE_PAGE: 4468 /* Driver doesn't expect write access for user space */ 4469 if (vma->vm_flags & VM_WRITE) 4470 return -EFAULT; 4471 ret = vm_insert_page(vma, vma->vm_start, 4472 virt_to_page((void *)bnxt_entry->mem_offset)); 4473 break; 4474 default: 4475 ret = -EINVAL; 4476 break; 4477 } 4478 4479 rdma_user_mmap_entry_put(rdma_entry); 4480 return ret; 4481 } 4482 4483 void bnxt_re_mmap_free(struct rdma_user_mmap_entry *rdma_entry) 4484 { 4485 struct bnxt_re_user_mmap_entry *bnxt_entry; 4486 4487 bnxt_entry = container_of(rdma_entry, struct bnxt_re_user_mmap_entry, 4488 rdma_entry); 4489 4490 kfree(bnxt_entry); 4491 } 4492 4493 static int UVERBS_HANDLER(BNXT_RE_METHOD_NOTIFY_DRV)(struct uverbs_attr_bundle *attrs) 4494 { 4495 struct bnxt_re_ucontext *uctx; 4496 4497 uctx = container_of(ib_uverbs_get_ucontext(attrs), struct bnxt_re_ucontext, ib_uctx); 4498 bnxt_re_pacing_alert(uctx->rdev); 4499 return 0; 4500 } 4501 4502 static int UVERBS_HANDLER(BNXT_RE_METHOD_ALLOC_PAGE)(struct uverbs_attr_bundle *attrs) 4503 { 4504 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, BNXT_RE_ALLOC_PAGE_HANDLE); 4505 enum bnxt_re_alloc_page_type alloc_type; 4506 struct bnxt_re_user_mmap_entry *entry; 4507 enum bnxt_re_mmap_flag mmap_flag; 4508 struct bnxt_qplib_chip_ctx *cctx; 4509 struct bnxt_re_ucontext *uctx; 4510 struct bnxt_re_dev *rdev; 4511 u64 mmap_offset; 4512 u32 length; 4513 u32 dpi; 4514 u64 addr; 4515 int err; 4516 4517 uctx = container_of(ib_uverbs_get_ucontext(attrs), struct bnxt_re_ucontext, ib_uctx); 4518 if (IS_ERR(uctx)) 4519 return PTR_ERR(uctx); 4520 4521 err = uverbs_get_const(&alloc_type, attrs, BNXT_RE_ALLOC_PAGE_TYPE); 4522 if (err) 4523 return err; 4524 4525 rdev = uctx->rdev; 4526 cctx = rdev->chip_ctx; 4527 4528 switch (alloc_type) { 4529 case BNXT_RE_ALLOC_WC_PAGE: 4530 if (cctx->modes.db_push) { 4531 if (bnxt_qplib_alloc_dpi(&rdev->qplib_res, &uctx->wcdpi, 4532 uctx, BNXT_QPLIB_DPI_TYPE_WC)) 4533 return -ENOMEM; 4534 length = PAGE_SIZE; 4535 dpi = uctx->wcdpi.dpi; 4536 addr = (u64)uctx->wcdpi.umdbr; 4537 mmap_flag = BNXT_RE_MMAP_WC_DB; 4538 } else { 4539 return -EINVAL; 4540 } 4541 4542 break; 4543 case BNXT_RE_ALLOC_DBR_BAR_PAGE: 4544 length = PAGE_SIZE; 4545 addr = (u64)rdev->pacing.dbr_bar_addr; 4546 mmap_flag = BNXT_RE_MMAP_DBR_BAR; 4547 break; 4548 4549 case BNXT_RE_ALLOC_DBR_PAGE: 4550 length = PAGE_SIZE; 4551 addr = (u64)rdev->pacing.dbr_page; 4552 mmap_flag = BNXT_RE_MMAP_DBR_PAGE; 4553 break; 4554 4555 default: 4556 return -EOPNOTSUPP; 4557 } 4558 4559 entry = bnxt_re_mmap_entry_insert(uctx, addr, mmap_flag, &mmap_offset); 4560 if (!entry) 4561 return -ENOMEM; 4562 4563 uobj->object = entry; 4564 uverbs_finalize_uobj_create(attrs, BNXT_RE_ALLOC_PAGE_HANDLE); 4565 err = uverbs_copy_to(attrs, BNXT_RE_ALLOC_PAGE_MMAP_OFFSET, 4566 &mmap_offset, sizeof(mmap_offset)); 4567 if (err) 4568 return err; 4569 4570 err = uverbs_copy_to(attrs, BNXT_RE_ALLOC_PAGE_MMAP_LENGTH, 4571 &length, sizeof(length)); 4572 if (err) 4573 return err; 4574 4575 err = uverbs_copy_to(attrs, BNXT_RE_ALLOC_PAGE_DPI, 4576 &dpi, sizeof(length)); 4577 if (err) 4578 return err; 4579 4580 return 0; 4581 } 4582 4583 static int alloc_page_obj_cleanup(struct ib_uobject *uobject, 4584 enum rdma_remove_reason why, 4585 struct uverbs_attr_bundle *attrs) 4586 { 4587 struct bnxt_re_user_mmap_entry *entry = uobject->object; 4588 struct bnxt_re_ucontext *uctx = entry->uctx; 4589 4590 switch (entry->mmap_flag) { 4591 case BNXT_RE_MMAP_WC_DB: 4592 if (uctx && uctx->wcdpi.dbr) { 4593 struct bnxt_re_dev *rdev = uctx->rdev; 4594 4595 bnxt_qplib_dealloc_dpi(&rdev->qplib_res, &uctx->wcdpi); 4596 uctx->wcdpi.dbr = NULL; 4597 } 4598 break; 4599 case BNXT_RE_MMAP_DBR_BAR: 4600 case BNXT_RE_MMAP_DBR_PAGE: 4601 break; 4602 default: 4603 goto exit; 4604 } 4605 rdma_user_mmap_entry_remove(&entry->rdma_entry); 4606 exit: 4607 return 0; 4608 } 4609 4610 DECLARE_UVERBS_NAMED_METHOD(BNXT_RE_METHOD_ALLOC_PAGE, 4611 UVERBS_ATTR_IDR(BNXT_RE_ALLOC_PAGE_HANDLE, 4612 BNXT_RE_OBJECT_ALLOC_PAGE, 4613 UVERBS_ACCESS_NEW, 4614 UA_MANDATORY), 4615 UVERBS_ATTR_CONST_IN(BNXT_RE_ALLOC_PAGE_TYPE, 4616 enum bnxt_re_alloc_page_type, 4617 UA_MANDATORY), 4618 UVERBS_ATTR_PTR_OUT(BNXT_RE_ALLOC_PAGE_MMAP_OFFSET, 4619 UVERBS_ATTR_TYPE(u64), 4620 UA_MANDATORY), 4621 UVERBS_ATTR_PTR_OUT(BNXT_RE_ALLOC_PAGE_MMAP_LENGTH, 4622 UVERBS_ATTR_TYPE(u32), 4623 UA_MANDATORY), 4624 UVERBS_ATTR_PTR_OUT(BNXT_RE_ALLOC_PAGE_DPI, 4625 UVERBS_ATTR_TYPE(u32), 4626 UA_MANDATORY)); 4627 4628 DECLARE_UVERBS_NAMED_METHOD_DESTROY(BNXT_RE_METHOD_DESTROY_PAGE, 4629 UVERBS_ATTR_IDR(BNXT_RE_DESTROY_PAGE_HANDLE, 4630 BNXT_RE_OBJECT_ALLOC_PAGE, 4631 UVERBS_ACCESS_DESTROY, 4632 UA_MANDATORY)); 4633 4634 DECLARE_UVERBS_NAMED_OBJECT(BNXT_RE_OBJECT_ALLOC_PAGE, 4635 UVERBS_TYPE_ALLOC_IDR(alloc_page_obj_cleanup), 4636 &UVERBS_METHOD(BNXT_RE_METHOD_ALLOC_PAGE), 4637 &UVERBS_METHOD(BNXT_RE_METHOD_DESTROY_PAGE)); 4638 4639 DECLARE_UVERBS_NAMED_METHOD(BNXT_RE_METHOD_NOTIFY_DRV); 4640 4641 DECLARE_UVERBS_GLOBAL_METHODS(BNXT_RE_OBJECT_NOTIFY_DRV, 4642 &UVERBS_METHOD(BNXT_RE_METHOD_NOTIFY_DRV)); 4643 4644 /* Toggle MEM */ 4645 static int UVERBS_HANDLER(BNXT_RE_METHOD_GET_TOGGLE_MEM)(struct uverbs_attr_bundle *attrs) 4646 { 4647 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, BNXT_RE_TOGGLE_MEM_HANDLE); 4648 enum bnxt_re_mmap_flag mmap_flag = BNXT_RE_MMAP_TOGGLE_PAGE; 4649 enum bnxt_re_get_toggle_mem_type res_type; 4650 struct bnxt_re_user_mmap_entry *entry; 4651 struct bnxt_re_ucontext *uctx; 4652 struct ib_ucontext *ib_uctx; 4653 struct bnxt_re_dev *rdev; 4654 struct bnxt_re_srq *srq; 4655 u32 length = PAGE_SIZE; 4656 struct bnxt_re_cq *cq; 4657 u64 mem_offset; 4658 u32 offset = 0; 4659 u64 addr = 0; 4660 u32 res_id; 4661 int err; 4662 4663 ib_uctx = ib_uverbs_get_ucontext(attrs); 4664 if (IS_ERR(ib_uctx)) 4665 return PTR_ERR(ib_uctx); 4666 4667 err = uverbs_get_const(&res_type, attrs, BNXT_RE_TOGGLE_MEM_TYPE); 4668 if (err) 4669 return err; 4670 4671 uctx = container_of(ib_uctx, struct bnxt_re_ucontext, ib_uctx); 4672 rdev = uctx->rdev; 4673 err = uverbs_copy_from(&res_id, attrs, BNXT_RE_TOGGLE_MEM_RES_ID); 4674 if (err) 4675 return err; 4676 4677 switch (res_type) { 4678 case BNXT_RE_CQ_TOGGLE_MEM: 4679 cq = bnxt_re_search_for_cq(rdev, res_id); 4680 if (!cq) 4681 return -EINVAL; 4682 4683 addr = (u64)cq->uctx_cq_page; 4684 break; 4685 case BNXT_RE_SRQ_TOGGLE_MEM: 4686 srq = bnxt_re_search_for_srq(rdev, res_id); 4687 if (!srq) 4688 return -EINVAL; 4689 4690 addr = (u64)srq->uctx_srq_page; 4691 break; 4692 4693 default: 4694 return -EOPNOTSUPP; 4695 } 4696 4697 entry = bnxt_re_mmap_entry_insert(uctx, addr, mmap_flag, &mem_offset); 4698 if (!entry) 4699 return -ENOMEM; 4700 4701 uobj->object = entry; 4702 uverbs_finalize_uobj_create(attrs, BNXT_RE_TOGGLE_MEM_HANDLE); 4703 err = uverbs_copy_to(attrs, BNXT_RE_TOGGLE_MEM_MMAP_PAGE, 4704 &mem_offset, sizeof(mem_offset)); 4705 if (err) 4706 return err; 4707 4708 err = uverbs_copy_to(attrs, BNXT_RE_TOGGLE_MEM_MMAP_LENGTH, 4709 &length, sizeof(length)); 4710 if (err) 4711 return err; 4712 4713 err = uverbs_copy_to(attrs, BNXT_RE_TOGGLE_MEM_MMAP_OFFSET, 4714 &offset, sizeof(length)); 4715 if (err) 4716 return err; 4717 4718 return 0; 4719 } 4720 4721 static int get_toggle_mem_obj_cleanup(struct ib_uobject *uobject, 4722 enum rdma_remove_reason why, 4723 struct uverbs_attr_bundle *attrs) 4724 { 4725 struct bnxt_re_user_mmap_entry *entry = uobject->object; 4726 4727 rdma_user_mmap_entry_remove(&entry->rdma_entry); 4728 return 0; 4729 } 4730 4731 DECLARE_UVERBS_NAMED_METHOD(BNXT_RE_METHOD_GET_TOGGLE_MEM, 4732 UVERBS_ATTR_IDR(BNXT_RE_TOGGLE_MEM_HANDLE, 4733 BNXT_RE_OBJECT_GET_TOGGLE_MEM, 4734 UVERBS_ACCESS_NEW, 4735 UA_MANDATORY), 4736 UVERBS_ATTR_CONST_IN(BNXT_RE_TOGGLE_MEM_TYPE, 4737 enum bnxt_re_get_toggle_mem_type, 4738 UA_MANDATORY), 4739 UVERBS_ATTR_PTR_IN(BNXT_RE_TOGGLE_MEM_RES_ID, 4740 UVERBS_ATTR_TYPE(u32), 4741 UA_MANDATORY), 4742 UVERBS_ATTR_PTR_OUT(BNXT_RE_TOGGLE_MEM_MMAP_PAGE, 4743 UVERBS_ATTR_TYPE(u64), 4744 UA_MANDATORY), 4745 UVERBS_ATTR_PTR_OUT(BNXT_RE_TOGGLE_MEM_MMAP_OFFSET, 4746 UVERBS_ATTR_TYPE(u32), 4747 UA_MANDATORY), 4748 UVERBS_ATTR_PTR_OUT(BNXT_RE_TOGGLE_MEM_MMAP_LENGTH, 4749 UVERBS_ATTR_TYPE(u32), 4750 UA_MANDATORY)); 4751 4752 DECLARE_UVERBS_NAMED_METHOD_DESTROY(BNXT_RE_METHOD_RELEASE_TOGGLE_MEM, 4753 UVERBS_ATTR_IDR(BNXT_RE_RELEASE_TOGGLE_MEM_HANDLE, 4754 BNXT_RE_OBJECT_GET_TOGGLE_MEM, 4755 UVERBS_ACCESS_DESTROY, 4756 UA_MANDATORY)); 4757 4758 DECLARE_UVERBS_NAMED_OBJECT(BNXT_RE_OBJECT_GET_TOGGLE_MEM, 4759 UVERBS_TYPE_ALLOC_IDR(get_toggle_mem_obj_cleanup), 4760 &UVERBS_METHOD(BNXT_RE_METHOD_GET_TOGGLE_MEM), 4761 &UVERBS_METHOD(BNXT_RE_METHOD_RELEASE_TOGGLE_MEM)); 4762 4763 const struct uapi_definition bnxt_re_uapi_defs[] = { 4764 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(BNXT_RE_OBJECT_ALLOC_PAGE), 4765 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(BNXT_RE_OBJECT_NOTIFY_DRV), 4766 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(BNXT_RE_OBJECT_GET_TOGGLE_MEM), 4767 {} 4768 }; 4769