Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. |
| 3 | * Copyright (c) 2004 Infinicon Corporation. All rights reserved. |
| 4 | * Copyright (c) 2004 Intel Corporation. All rights reserved. |
| 5 | * Copyright (c) 2004 Topspin Corporation. All rights reserved. |
| 6 | * Copyright (c) 2004 Voltaire Corporation. All rights reserved. |
Roland Dreier | 2a1d9b7 | 2005-08-10 23:03:10 -0700 | [diff] [blame] | 7 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
Roland Dreier | 33b9b3e | 2006-01-30 14:29:21 -0800 | [diff] [blame] | 8 | * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * |
| 10 | * This software is available to you under a choice of one of two |
| 11 | * licenses. You may choose to be licensed under the terms of the GNU |
| 12 | * General Public License (GPL) Version 2, available from the file |
| 13 | * COPYING in the main directory of this source tree, or the |
| 14 | * OpenIB.org BSD license below: |
| 15 | * |
| 16 | * Redistribution and use in source and binary forms, with or |
| 17 | * without modification, are permitted provided that the following |
| 18 | * conditions are met: |
| 19 | * |
| 20 | * - Redistributions of source code must retain the above |
| 21 | * copyright notice, this list of conditions and the following |
| 22 | * disclaimer. |
| 23 | * |
| 24 | * - Redistributions in binary form must reproduce the above |
| 25 | * copyright notice, this list of conditions and the following |
| 26 | * disclaimer in the documentation and/or other materials |
| 27 | * provided with the distribution. |
| 28 | * |
| 29 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 30 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 31 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 32 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 33 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 34 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 35 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 36 | * SOFTWARE. |
| 37 | * |
| 38 | * $Id: verbs.c 1349 2004-12-16 21:09:43Z roland $ |
| 39 | */ |
| 40 | |
| 41 | #include <linux/errno.h> |
| 42 | #include <linux/err.h> |
Tim Schmielau | 8c65b4a | 2005-11-07 00:59:43 -0800 | [diff] [blame] | 43 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
Roland Dreier | a4d61e8 | 2005-08-25 13:40:04 -0700 | [diff] [blame] | 45 | #include <rdma/ib_verbs.h> |
| 46 | #include <rdma/ib_cache.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Jack Morgenstein | bf6a9e3 | 2006-04-10 09:43:47 -0700 | [diff] [blame] | 48 | int ib_rate_to_mult(enum ib_rate rate) |
| 49 | { |
| 50 | switch (rate) { |
| 51 | case IB_RATE_2_5_GBPS: return 1; |
| 52 | case IB_RATE_5_GBPS: return 2; |
| 53 | case IB_RATE_10_GBPS: return 4; |
| 54 | case IB_RATE_20_GBPS: return 8; |
| 55 | case IB_RATE_30_GBPS: return 12; |
| 56 | case IB_RATE_40_GBPS: return 16; |
| 57 | case IB_RATE_60_GBPS: return 24; |
| 58 | case IB_RATE_80_GBPS: return 32; |
| 59 | case IB_RATE_120_GBPS: return 48; |
| 60 | default: return -1; |
| 61 | } |
| 62 | } |
| 63 | EXPORT_SYMBOL(ib_rate_to_mult); |
| 64 | |
| 65 | enum ib_rate mult_to_ib_rate(int mult) |
| 66 | { |
| 67 | switch (mult) { |
| 68 | case 1: return IB_RATE_2_5_GBPS; |
| 69 | case 2: return IB_RATE_5_GBPS; |
| 70 | case 4: return IB_RATE_10_GBPS; |
| 71 | case 8: return IB_RATE_20_GBPS; |
| 72 | case 12: return IB_RATE_30_GBPS; |
| 73 | case 16: return IB_RATE_40_GBPS; |
| 74 | case 24: return IB_RATE_60_GBPS; |
| 75 | case 32: return IB_RATE_80_GBPS; |
| 76 | case 48: return IB_RATE_120_GBPS; |
| 77 | default: return IB_RATE_PORT_CURRENT; |
| 78 | } |
| 79 | } |
| 80 | EXPORT_SYMBOL(mult_to_ib_rate); |
| 81 | |
Tom Tucker | 07ebafb | 2006-08-03 16:02:42 -0500 | [diff] [blame] | 82 | enum rdma_transport_type |
| 83 | rdma_node_get_transport(enum rdma_node_type node_type) |
| 84 | { |
| 85 | switch (node_type) { |
| 86 | case RDMA_NODE_IB_CA: |
| 87 | case RDMA_NODE_IB_SWITCH: |
| 88 | case RDMA_NODE_IB_ROUTER: |
| 89 | return RDMA_TRANSPORT_IB; |
| 90 | case RDMA_NODE_RNIC: |
| 91 | return RDMA_TRANSPORT_IWARP; |
| 92 | default: |
| 93 | BUG(); |
| 94 | return 0; |
| 95 | } |
| 96 | } |
| 97 | EXPORT_SYMBOL(rdma_node_get_transport); |
| 98 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | /* Protection domains */ |
| 100 | |
| 101 | struct ib_pd *ib_alloc_pd(struct ib_device *device) |
| 102 | { |
| 103 | struct ib_pd *pd; |
| 104 | |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 105 | pd = device->alloc_pd(device, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
| 107 | if (!IS_ERR(pd)) { |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 108 | pd->device = device; |
| 109 | pd->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | atomic_set(&pd->usecnt, 0); |
| 111 | } |
| 112 | |
| 113 | return pd; |
| 114 | } |
| 115 | EXPORT_SYMBOL(ib_alloc_pd); |
| 116 | |
| 117 | int ib_dealloc_pd(struct ib_pd *pd) |
| 118 | { |
| 119 | if (atomic_read(&pd->usecnt)) |
| 120 | return -EBUSY; |
| 121 | |
| 122 | return pd->device->dealloc_pd(pd); |
| 123 | } |
| 124 | EXPORT_SYMBOL(ib_dealloc_pd); |
| 125 | |
| 126 | /* Address handles */ |
| 127 | |
| 128 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) |
| 129 | { |
| 130 | struct ib_ah *ah; |
| 131 | |
| 132 | ah = pd->device->create_ah(pd, ah_attr); |
| 133 | |
| 134 | if (!IS_ERR(ah)) { |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 135 | ah->device = pd->device; |
| 136 | ah->pd = pd; |
| 137 | ah->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | atomic_inc(&pd->usecnt); |
| 139 | } |
| 140 | |
| 141 | return ah; |
| 142 | } |
| 143 | EXPORT_SYMBOL(ib_create_ah); |
| 144 | |
Sean Hefty | 4e00d69 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 145 | int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, |
| 146 | struct ib_grh *grh, struct ib_ah_attr *ah_attr) |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 147 | { |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 148 | u32 flow_class; |
| 149 | u16 gid_index; |
| 150 | int ret; |
| 151 | |
Sean Hefty | 4e00d69 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 152 | memset(ah_attr, 0, sizeof *ah_attr); |
| 153 | ah_attr->dlid = wc->slid; |
| 154 | ah_attr->sl = wc->sl; |
| 155 | ah_attr->src_path_bits = wc->dlid_path_bits; |
| 156 | ah_attr->port_num = port_num; |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 157 | |
| 158 | if (wc->wc_flags & IB_WC_GRH) { |
Sean Hefty | 4e00d69 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 159 | ah_attr->ah_flags = IB_AH_GRH; |
| 160 | ah_attr->grh.dgid = grh->sgid; |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 161 | |
Sean Hefty | 4e00d69 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 162 | ret = ib_find_cached_gid(device, &grh->dgid, &port_num, |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 163 | &gid_index); |
| 164 | if (ret) |
Sean Hefty | 4e00d69 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 165 | return ret; |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 166 | |
Sean Hefty | 4e00d69 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 167 | ah_attr->grh.sgid_index = (u8) gid_index; |
Hal Rosenstock | 497677a | 2005-07-27 11:45:35 -0700 | [diff] [blame] | 168 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
Sean Hefty | 4e00d69 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 169 | ah_attr->grh.flow_label = flow_class & 0xFFFFF; |
Sean Hefty | 47645d8 | 2007-02-21 16:37:31 -0800 | [diff] [blame] | 170 | ah_attr->grh.hop_limit = 0xFF; |
Sean Hefty | 4e00d69 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 171 | ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF; |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 172 | } |
Sean Hefty | 4e00d69 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 173 | return 0; |
| 174 | } |
| 175 | EXPORT_SYMBOL(ib_init_ah_from_wc); |
| 176 | |
| 177 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, |
| 178 | struct ib_grh *grh, u8 port_num) |
| 179 | { |
| 180 | struct ib_ah_attr ah_attr; |
| 181 | int ret; |
| 182 | |
| 183 | ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); |
| 184 | if (ret) |
| 185 | return ERR_PTR(ret); |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 186 | |
| 187 | return ib_create_ah(pd, &ah_attr); |
| 188 | } |
| 189 | EXPORT_SYMBOL(ib_create_ah_from_wc); |
| 190 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
| 192 | { |
| 193 | return ah->device->modify_ah ? |
| 194 | ah->device->modify_ah(ah, ah_attr) : |
| 195 | -ENOSYS; |
| 196 | } |
| 197 | EXPORT_SYMBOL(ib_modify_ah); |
| 198 | |
| 199 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
| 200 | { |
| 201 | return ah->device->query_ah ? |
| 202 | ah->device->query_ah(ah, ah_attr) : |
| 203 | -ENOSYS; |
| 204 | } |
| 205 | EXPORT_SYMBOL(ib_query_ah); |
| 206 | |
| 207 | int ib_destroy_ah(struct ib_ah *ah) |
| 208 | { |
| 209 | struct ib_pd *pd; |
| 210 | int ret; |
| 211 | |
| 212 | pd = ah->pd; |
| 213 | ret = ah->device->destroy_ah(ah); |
| 214 | if (!ret) |
| 215 | atomic_dec(&pd->usecnt); |
| 216 | |
| 217 | return ret; |
| 218 | } |
| 219 | EXPORT_SYMBOL(ib_destroy_ah); |
| 220 | |
Roland Dreier | d41fcc6 | 2005-08-18 12:23:08 -0700 | [diff] [blame] | 221 | /* Shared receive queues */ |
| 222 | |
| 223 | struct ib_srq *ib_create_srq(struct ib_pd *pd, |
| 224 | struct ib_srq_init_attr *srq_init_attr) |
| 225 | { |
| 226 | struct ib_srq *srq; |
| 227 | |
| 228 | if (!pd->device->create_srq) |
| 229 | return ERR_PTR(-ENOSYS); |
| 230 | |
| 231 | srq = pd->device->create_srq(pd, srq_init_attr, NULL); |
| 232 | |
| 233 | if (!IS_ERR(srq)) { |
| 234 | srq->device = pd->device; |
| 235 | srq->pd = pd; |
| 236 | srq->uobject = NULL; |
| 237 | srq->event_handler = srq_init_attr->event_handler; |
| 238 | srq->srq_context = srq_init_attr->srq_context; |
| 239 | atomic_inc(&pd->usecnt); |
| 240 | atomic_set(&srq->usecnt, 0); |
| 241 | } |
| 242 | |
| 243 | return srq; |
| 244 | } |
| 245 | EXPORT_SYMBOL(ib_create_srq); |
| 246 | |
| 247 | int ib_modify_srq(struct ib_srq *srq, |
| 248 | struct ib_srq_attr *srq_attr, |
| 249 | enum ib_srq_attr_mask srq_attr_mask) |
| 250 | { |
Ralph Campbell | 9bc57e2 | 2006-08-11 14:58:09 -0700 | [diff] [blame] | 251 | return srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL); |
Roland Dreier | d41fcc6 | 2005-08-18 12:23:08 -0700 | [diff] [blame] | 252 | } |
| 253 | EXPORT_SYMBOL(ib_modify_srq); |
| 254 | |
| 255 | int ib_query_srq(struct ib_srq *srq, |
| 256 | struct ib_srq_attr *srq_attr) |
| 257 | { |
| 258 | return srq->device->query_srq ? |
| 259 | srq->device->query_srq(srq, srq_attr) : -ENOSYS; |
| 260 | } |
| 261 | EXPORT_SYMBOL(ib_query_srq); |
| 262 | |
| 263 | int ib_destroy_srq(struct ib_srq *srq) |
| 264 | { |
| 265 | struct ib_pd *pd; |
| 266 | int ret; |
| 267 | |
| 268 | if (atomic_read(&srq->usecnt)) |
| 269 | return -EBUSY; |
| 270 | |
| 271 | pd = srq->pd; |
| 272 | |
| 273 | ret = srq->device->destroy_srq(srq); |
| 274 | if (!ret) |
| 275 | atomic_dec(&pd->usecnt); |
| 276 | |
| 277 | return ret; |
| 278 | } |
| 279 | EXPORT_SYMBOL(ib_destroy_srq); |
| 280 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | /* Queue pairs */ |
| 282 | |
| 283 | struct ib_qp *ib_create_qp(struct ib_pd *pd, |
| 284 | struct ib_qp_init_attr *qp_init_attr) |
| 285 | { |
| 286 | struct ib_qp *qp; |
| 287 | |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 288 | qp = pd->device->create_qp(pd, qp_init_attr, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
| 290 | if (!IS_ERR(qp)) { |
| 291 | qp->device = pd->device; |
| 292 | qp->pd = pd; |
| 293 | qp->send_cq = qp_init_attr->send_cq; |
| 294 | qp->recv_cq = qp_init_attr->recv_cq; |
| 295 | qp->srq = qp_init_attr->srq; |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 296 | qp->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | qp->event_handler = qp_init_attr->event_handler; |
| 298 | qp->qp_context = qp_init_attr->qp_context; |
| 299 | qp->qp_type = qp_init_attr->qp_type; |
| 300 | atomic_inc(&pd->usecnt); |
| 301 | atomic_inc(&qp_init_attr->send_cq->usecnt); |
| 302 | atomic_inc(&qp_init_attr->recv_cq->usecnt); |
| 303 | if (qp_init_attr->srq) |
| 304 | atomic_inc(&qp_init_attr->srq->usecnt); |
| 305 | } |
| 306 | |
| 307 | return qp; |
| 308 | } |
| 309 | EXPORT_SYMBOL(ib_create_qp); |
| 310 | |
Roland Dreier | 8a51866 | 2006-02-13 12:48:12 -0800 | [diff] [blame] | 311 | static const struct { |
| 312 | int valid; |
| 313 | enum ib_qp_attr_mask req_param[IB_QPT_RAW_ETY + 1]; |
| 314 | enum ib_qp_attr_mask opt_param[IB_QPT_RAW_ETY + 1]; |
| 315 | } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { |
| 316 | [IB_QPS_RESET] = { |
| 317 | [IB_QPS_RESET] = { .valid = 1 }, |
| 318 | [IB_QPS_ERR] = { .valid = 1 }, |
| 319 | [IB_QPS_INIT] = { |
| 320 | .valid = 1, |
| 321 | .req_param = { |
| 322 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | |
| 323 | IB_QP_PORT | |
| 324 | IB_QP_QKEY), |
| 325 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | |
| 326 | IB_QP_PORT | |
| 327 | IB_QP_ACCESS_FLAGS), |
| 328 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | |
| 329 | IB_QP_PORT | |
| 330 | IB_QP_ACCESS_FLAGS), |
| 331 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
| 332 | IB_QP_QKEY), |
| 333 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | |
| 334 | IB_QP_QKEY), |
| 335 | } |
| 336 | }, |
| 337 | }, |
| 338 | [IB_QPS_INIT] = { |
| 339 | [IB_QPS_RESET] = { .valid = 1 }, |
| 340 | [IB_QPS_ERR] = { .valid = 1 }, |
| 341 | [IB_QPS_INIT] = { |
| 342 | .valid = 1, |
| 343 | .opt_param = { |
| 344 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | |
| 345 | IB_QP_PORT | |
| 346 | IB_QP_QKEY), |
| 347 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | |
| 348 | IB_QP_PORT | |
| 349 | IB_QP_ACCESS_FLAGS), |
| 350 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | |
| 351 | IB_QP_PORT | |
| 352 | IB_QP_ACCESS_FLAGS), |
| 353 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
| 354 | IB_QP_QKEY), |
| 355 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | |
| 356 | IB_QP_QKEY), |
| 357 | } |
| 358 | }, |
| 359 | [IB_QPS_RTR] = { |
| 360 | .valid = 1, |
| 361 | .req_param = { |
| 362 | [IB_QPT_UC] = (IB_QP_AV | |
| 363 | IB_QP_PATH_MTU | |
| 364 | IB_QP_DEST_QPN | |
| 365 | IB_QP_RQ_PSN), |
| 366 | [IB_QPT_RC] = (IB_QP_AV | |
| 367 | IB_QP_PATH_MTU | |
| 368 | IB_QP_DEST_QPN | |
| 369 | IB_QP_RQ_PSN | |
| 370 | IB_QP_MAX_DEST_RD_ATOMIC | |
| 371 | IB_QP_MIN_RNR_TIMER), |
| 372 | }, |
| 373 | .opt_param = { |
| 374 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | |
| 375 | IB_QP_QKEY), |
| 376 | [IB_QPT_UC] = (IB_QP_ALT_PATH | |
| 377 | IB_QP_ACCESS_FLAGS | |
| 378 | IB_QP_PKEY_INDEX), |
| 379 | [IB_QPT_RC] = (IB_QP_ALT_PATH | |
| 380 | IB_QP_ACCESS_FLAGS | |
| 381 | IB_QP_PKEY_INDEX), |
| 382 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
| 383 | IB_QP_QKEY), |
| 384 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | |
| 385 | IB_QP_QKEY), |
| 386 | } |
| 387 | } |
| 388 | }, |
| 389 | [IB_QPS_RTR] = { |
| 390 | [IB_QPS_RESET] = { .valid = 1 }, |
| 391 | [IB_QPS_ERR] = { .valid = 1 }, |
| 392 | [IB_QPS_RTS] = { |
| 393 | .valid = 1, |
| 394 | .req_param = { |
| 395 | [IB_QPT_UD] = IB_QP_SQ_PSN, |
| 396 | [IB_QPT_UC] = IB_QP_SQ_PSN, |
| 397 | [IB_QPT_RC] = (IB_QP_TIMEOUT | |
| 398 | IB_QP_RETRY_CNT | |
| 399 | IB_QP_RNR_RETRY | |
| 400 | IB_QP_SQ_PSN | |
| 401 | IB_QP_MAX_QP_RD_ATOMIC), |
| 402 | [IB_QPT_SMI] = IB_QP_SQ_PSN, |
| 403 | [IB_QPT_GSI] = IB_QP_SQ_PSN, |
| 404 | }, |
| 405 | .opt_param = { |
| 406 | [IB_QPT_UD] = (IB_QP_CUR_STATE | |
| 407 | IB_QP_QKEY), |
| 408 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
| 409 | IB_QP_ALT_PATH | |
| 410 | IB_QP_ACCESS_FLAGS | |
| 411 | IB_QP_PATH_MIG_STATE), |
| 412 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
| 413 | IB_QP_ALT_PATH | |
| 414 | IB_QP_ACCESS_FLAGS | |
| 415 | IB_QP_MIN_RNR_TIMER | |
| 416 | IB_QP_PATH_MIG_STATE), |
| 417 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
| 418 | IB_QP_QKEY), |
| 419 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | |
| 420 | IB_QP_QKEY), |
| 421 | } |
| 422 | } |
| 423 | }, |
| 424 | [IB_QPS_RTS] = { |
| 425 | [IB_QPS_RESET] = { .valid = 1 }, |
| 426 | [IB_QPS_ERR] = { .valid = 1 }, |
| 427 | [IB_QPS_RTS] = { |
| 428 | .valid = 1, |
| 429 | .opt_param = { |
| 430 | [IB_QPT_UD] = (IB_QP_CUR_STATE | |
| 431 | IB_QP_QKEY), |
Dotan Barak | 4546d31 | 2006-03-02 11:22:28 -0800 | [diff] [blame] | 432 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
| 433 | IB_QP_ACCESS_FLAGS | |
Roland Dreier | 8a51866 | 2006-02-13 12:48:12 -0800 | [diff] [blame] | 434 | IB_QP_ALT_PATH | |
| 435 | IB_QP_PATH_MIG_STATE), |
Dotan Barak | 4546d31 | 2006-03-02 11:22:28 -0800 | [diff] [blame] | 436 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
| 437 | IB_QP_ACCESS_FLAGS | |
Roland Dreier | 8a51866 | 2006-02-13 12:48:12 -0800 | [diff] [blame] | 438 | IB_QP_ALT_PATH | |
| 439 | IB_QP_PATH_MIG_STATE | |
| 440 | IB_QP_MIN_RNR_TIMER), |
| 441 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
| 442 | IB_QP_QKEY), |
| 443 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | |
| 444 | IB_QP_QKEY), |
| 445 | } |
| 446 | }, |
| 447 | [IB_QPS_SQD] = { |
| 448 | .valid = 1, |
| 449 | .opt_param = { |
| 450 | [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
| 451 | [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
| 452 | [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
| 453 | [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
| 454 | [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY |
| 455 | } |
| 456 | }, |
| 457 | }, |
| 458 | [IB_QPS_SQD] = { |
| 459 | [IB_QPS_RESET] = { .valid = 1 }, |
| 460 | [IB_QPS_ERR] = { .valid = 1 }, |
| 461 | [IB_QPS_RTS] = { |
| 462 | .valid = 1, |
| 463 | .opt_param = { |
| 464 | [IB_QPT_UD] = (IB_QP_CUR_STATE | |
| 465 | IB_QP_QKEY), |
| 466 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
| 467 | IB_QP_ALT_PATH | |
| 468 | IB_QP_ACCESS_FLAGS | |
| 469 | IB_QP_PATH_MIG_STATE), |
| 470 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
| 471 | IB_QP_ALT_PATH | |
| 472 | IB_QP_ACCESS_FLAGS | |
| 473 | IB_QP_MIN_RNR_TIMER | |
| 474 | IB_QP_PATH_MIG_STATE), |
| 475 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
| 476 | IB_QP_QKEY), |
| 477 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | |
| 478 | IB_QP_QKEY), |
| 479 | } |
| 480 | }, |
| 481 | [IB_QPS_SQD] = { |
| 482 | .valid = 1, |
| 483 | .opt_param = { |
| 484 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | |
| 485 | IB_QP_QKEY), |
| 486 | [IB_QPT_UC] = (IB_QP_AV | |
Roland Dreier | 8a51866 | 2006-02-13 12:48:12 -0800 | [diff] [blame] | 487 | IB_QP_ALT_PATH | |
| 488 | IB_QP_ACCESS_FLAGS | |
| 489 | IB_QP_PKEY_INDEX | |
| 490 | IB_QP_PATH_MIG_STATE), |
| 491 | [IB_QPT_RC] = (IB_QP_PORT | |
| 492 | IB_QP_AV | |
| 493 | IB_QP_TIMEOUT | |
| 494 | IB_QP_RETRY_CNT | |
| 495 | IB_QP_RNR_RETRY | |
| 496 | IB_QP_MAX_QP_RD_ATOMIC | |
| 497 | IB_QP_MAX_DEST_RD_ATOMIC | |
Roland Dreier | 8a51866 | 2006-02-13 12:48:12 -0800 | [diff] [blame] | 498 | IB_QP_ALT_PATH | |
| 499 | IB_QP_ACCESS_FLAGS | |
| 500 | IB_QP_PKEY_INDEX | |
| 501 | IB_QP_MIN_RNR_TIMER | |
| 502 | IB_QP_PATH_MIG_STATE), |
| 503 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
| 504 | IB_QP_QKEY), |
| 505 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | |
| 506 | IB_QP_QKEY), |
| 507 | } |
| 508 | } |
| 509 | }, |
| 510 | [IB_QPS_SQE] = { |
| 511 | [IB_QPS_RESET] = { .valid = 1 }, |
| 512 | [IB_QPS_ERR] = { .valid = 1 }, |
| 513 | [IB_QPS_RTS] = { |
| 514 | .valid = 1, |
| 515 | .opt_param = { |
| 516 | [IB_QPT_UD] = (IB_QP_CUR_STATE | |
| 517 | IB_QP_QKEY), |
| 518 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
| 519 | IB_QP_ACCESS_FLAGS), |
| 520 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
| 521 | IB_QP_QKEY), |
| 522 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | |
| 523 | IB_QP_QKEY), |
| 524 | } |
| 525 | } |
| 526 | }, |
| 527 | [IB_QPS_ERR] = { |
| 528 | [IB_QPS_RESET] = { .valid = 1 }, |
| 529 | [IB_QPS_ERR] = { .valid = 1 } |
| 530 | } |
| 531 | }; |
| 532 | |
| 533 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, |
| 534 | enum ib_qp_type type, enum ib_qp_attr_mask mask) |
| 535 | { |
| 536 | enum ib_qp_attr_mask req_param, opt_param; |
| 537 | |
| 538 | if (cur_state < 0 || cur_state > IB_QPS_ERR || |
| 539 | next_state < 0 || next_state > IB_QPS_ERR) |
| 540 | return 0; |
| 541 | |
| 542 | if (mask & IB_QP_CUR_STATE && |
| 543 | cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && |
| 544 | cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) |
| 545 | return 0; |
| 546 | |
| 547 | if (!qp_state_table[cur_state][next_state].valid) |
| 548 | return 0; |
| 549 | |
| 550 | req_param = qp_state_table[cur_state][next_state].req_param[type]; |
| 551 | opt_param = qp_state_table[cur_state][next_state].opt_param[type]; |
| 552 | |
| 553 | if ((mask & req_param) != req_param) |
| 554 | return 0; |
| 555 | |
| 556 | if (mask & ~(req_param | opt_param | IB_QP_STATE)) |
| 557 | return 0; |
| 558 | |
| 559 | return 1; |
| 560 | } |
| 561 | EXPORT_SYMBOL(ib_modify_qp_is_ok); |
| 562 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | int ib_modify_qp(struct ib_qp *qp, |
| 564 | struct ib_qp_attr *qp_attr, |
| 565 | int qp_attr_mask) |
| 566 | { |
Ralph Campbell | 9bc57e2 | 2006-08-11 14:58:09 -0700 | [diff] [blame] | 567 | return qp->device->modify_qp(qp, qp_attr, qp_attr_mask, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | } |
| 569 | EXPORT_SYMBOL(ib_modify_qp); |
| 570 | |
| 571 | int ib_query_qp(struct ib_qp *qp, |
| 572 | struct ib_qp_attr *qp_attr, |
| 573 | int qp_attr_mask, |
| 574 | struct ib_qp_init_attr *qp_init_attr) |
| 575 | { |
| 576 | return qp->device->query_qp ? |
| 577 | qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) : |
| 578 | -ENOSYS; |
| 579 | } |
| 580 | EXPORT_SYMBOL(ib_query_qp); |
| 581 | |
| 582 | int ib_destroy_qp(struct ib_qp *qp) |
| 583 | { |
| 584 | struct ib_pd *pd; |
| 585 | struct ib_cq *scq, *rcq; |
| 586 | struct ib_srq *srq; |
| 587 | int ret; |
| 588 | |
| 589 | pd = qp->pd; |
| 590 | scq = qp->send_cq; |
| 591 | rcq = qp->recv_cq; |
| 592 | srq = qp->srq; |
| 593 | |
| 594 | ret = qp->device->destroy_qp(qp); |
| 595 | if (!ret) { |
| 596 | atomic_dec(&pd->usecnt); |
| 597 | atomic_dec(&scq->usecnt); |
| 598 | atomic_dec(&rcq->usecnt); |
| 599 | if (srq) |
| 600 | atomic_dec(&srq->usecnt); |
| 601 | } |
| 602 | |
| 603 | return ret; |
| 604 | } |
| 605 | EXPORT_SYMBOL(ib_destroy_qp); |
| 606 | |
| 607 | /* Completion queues */ |
| 608 | |
| 609 | struct ib_cq *ib_create_cq(struct ib_device *device, |
| 610 | ib_comp_handler comp_handler, |
| 611 | void (*event_handler)(struct ib_event *, void *), |
Michael S. Tsirkin | f4fd0b2 | 2007-05-03 13:48:47 +0300 | [diff] [blame] | 612 | void *cq_context, int cqe, int comp_vector) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | { |
| 614 | struct ib_cq *cq; |
| 615 | |
Michael S. Tsirkin | f4fd0b2 | 2007-05-03 13:48:47 +0300 | [diff] [blame] | 616 | cq = device->create_cq(device, cqe, comp_vector, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | |
| 618 | if (!IS_ERR(cq)) { |
| 619 | cq->device = device; |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 620 | cq->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | cq->comp_handler = comp_handler; |
| 622 | cq->event_handler = event_handler; |
| 623 | cq->cq_context = cq_context; |
| 624 | atomic_set(&cq->usecnt, 0); |
| 625 | } |
| 626 | |
| 627 | return cq; |
| 628 | } |
| 629 | EXPORT_SYMBOL(ib_create_cq); |
| 630 | |
| 631 | int ib_destroy_cq(struct ib_cq *cq) |
| 632 | { |
| 633 | if (atomic_read(&cq->usecnt)) |
| 634 | return -EBUSY; |
| 635 | |
| 636 | return cq->device->destroy_cq(cq); |
| 637 | } |
| 638 | EXPORT_SYMBOL(ib_destroy_cq); |
| 639 | |
Roland Dreier | a74cd4a | 2006-02-13 16:30:49 -0800 | [diff] [blame] | 640 | int ib_resize_cq(struct ib_cq *cq, int cqe) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | { |
Roland Dreier | 40de2e5 | 2005-11-08 11:10:25 -0800 | [diff] [blame] | 642 | return cq->device->resize_cq ? |
Roland Dreier | 33b9b3e | 2006-01-30 14:29:21 -0800 | [diff] [blame] | 643 | cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | } |
| 645 | EXPORT_SYMBOL(ib_resize_cq); |
| 646 | |
| 647 | /* Memory regions */ |
| 648 | |
| 649 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) |
| 650 | { |
| 651 | struct ib_mr *mr; |
| 652 | |
| 653 | mr = pd->device->get_dma_mr(pd, mr_access_flags); |
| 654 | |
| 655 | if (!IS_ERR(mr)) { |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 656 | mr->device = pd->device; |
| 657 | mr->pd = pd; |
| 658 | mr->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | atomic_inc(&pd->usecnt); |
| 660 | atomic_set(&mr->usecnt, 0); |
| 661 | } |
| 662 | |
| 663 | return mr; |
| 664 | } |
| 665 | EXPORT_SYMBOL(ib_get_dma_mr); |
| 666 | |
| 667 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, |
| 668 | struct ib_phys_buf *phys_buf_array, |
| 669 | int num_phys_buf, |
| 670 | int mr_access_flags, |
| 671 | u64 *iova_start) |
| 672 | { |
| 673 | struct ib_mr *mr; |
| 674 | |
| 675 | mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, |
| 676 | mr_access_flags, iova_start); |
| 677 | |
| 678 | if (!IS_ERR(mr)) { |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 679 | mr->device = pd->device; |
| 680 | mr->pd = pd; |
| 681 | mr->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | atomic_inc(&pd->usecnt); |
| 683 | atomic_set(&mr->usecnt, 0); |
| 684 | } |
| 685 | |
| 686 | return mr; |
| 687 | } |
| 688 | EXPORT_SYMBOL(ib_reg_phys_mr); |
| 689 | |
| 690 | int ib_rereg_phys_mr(struct ib_mr *mr, |
| 691 | int mr_rereg_mask, |
| 692 | struct ib_pd *pd, |
| 693 | struct ib_phys_buf *phys_buf_array, |
| 694 | int num_phys_buf, |
| 695 | int mr_access_flags, |
| 696 | u64 *iova_start) |
| 697 | { |
| 698 | struct ib_pd *old_pd; |
| 699 | int ret; |
| 700 | |
| 701 | if (!mr->device->rereg_phys_mr) |
| 702 | return -ENOSYS; |
| 703 | |
| 704 | if (atomic_read(&mr->usecnt)) |
| 705 | return -EBUSY; |
| 706 | |
| 707 | old_pd = mr->pd; |
| 708 | |
| 709 | ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, |
| 710 | phys_buf_array, num_phys_buf, |
| 711 | mr_access_flags, iova_start); |
| 712 | |
| 713 | if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { |
| 714 | atomic_dec(&old_pd->usecnt); |
| 715 | atomic_inc(&pd->usecnt); |
| 716 | } |
| 717 | |
| 718 | return ret; |
| 719 | } |
| 720 | EXPORT_SYMBOL(ib_rereg_phys_mr); |
| 721 | |
| 722 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) |
| 723 | { |
| 724 | return mr->device->query_mr ? |
| 725 | mr->device->query_mr(mr, mr_attr) : -ENOSYS; |
| 726 | } |
| 727 | EXPORT_SYMBOL(ib_query_mr); |
| 728 | |
| 729 | int ib_dereg_mr(struct ib_mr *mr) |
| 730 | { |
| 731 | struct ib_pd *pd; |
| 732 | int ret; |
| 733 | |
| 734 | if (atomic_read(&mr->usecnt)) |
| 735 | return -EBUSY; |
| 736 | |
| 737 | pd = mr->pd; |
| 738 | ret = mr->device->dereg_mr(mr); |
| 739 | if (!ret) |
| 740 | atomic_dec(&pd->usecnt); |
| 741 | |
| 742 | return ret; |
| 743 | } |
| 744 | EXPORT_SYMBOL(ib_dereg_mr); |
| 745 | |
| 746 | /* Memory windows */ |
| 747 | |
| 748 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd) |
| 749 | { |
| 750 | struct ib_mw *mw; |
| 751 | |
| 752 | if (!pd->device->alloc_mw) |
| 753 | return ERR_PTR(-ENOSYS); |
| 754 | |
| 755 | mw = pd->device->alloc_mw(pd); |
| 756 | if (!IS_ERR(mw)) { |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 757 | mw->device = pd->device; |
| 758 | mw->pd = pd; |
| 759 | mw->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | atomic_inc(&pd->usecnt); |
| 761 | } |
| 762 | |
| 763 | return mw; |
| 764 | } |
| 765 | EXPORT_SYMBOL(ib_alloc_mw); |
| 766 | |
| 767 | int ib_dealloc_mw(struct ib_mw *mw) |
| 768 | { |
| 769 | struct ib_pd *pd; |
| 770 | int ret; |
| 771 | |
| 772 | pd = mw->pd; |
| 773 | ret = mw->device->dealloc_mw(mw); |
| 774 | if (!ret) |
| 775 | atomic_dec(&pd->usecnt); |
| 776 | |
| 777 | return ret; |
| 778 | } |
| 779 | EXPORT_SYMBOL(ib_dealloc_mw); |
| 780 | |
| 781 | /* "Fast" memory regions */ |
| 782 | |
| 783 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, |
| 784 | int mr_access_flags, |
| 785 | struct ib_fmr_attr *fmr_attr) |
| 786 | { |
| 787 | struct ib_fmr *fmr; |
| 788 | |
| 789 | if (!pd->device->alloc_fmr) |
| 790 | return ERR_PTR(-ENOSYS); |
| 791 | |
| 792 | fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); |
| 793 | if (!IS_ERR(fmr)) { |
| 794 | fmr->device = pd->device; |
| 795 | fmr->pd = pd; |
| 796 | atomic_inc(&pd->usecnt); |
| 797 | } |
| 798 | |
| 799 | return fmr; |
| 800 | } |
| 801 | EXPORT_SYMBOL(ib_alloc_fmr); |
| 802 | |
| 803 | int ib_unmap_fmr(struct list_head *fmr_list) |
| 804 | { |
| 805 | struct ib_fmr *fmr; |
| 806 | |
| 807 | if (list_empty(fmr_list)) |
| 808 | return 0; |
| 809 | |
| 810 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); |
| 811 | return fmr->device->unmap_fmr(fmr_list); |
| 812 | } |
| 813 | EXPORT_SYMBOL(ib_unmap_fmr); |
| 814 | |
| 815 | int ib_dealloc_fmr(struct ib_fmr *fmr) |
| 816 | { |
| 817 | struct ib_pd *pd; |
| 818 | int ret; |
| 819 | |
| 820 | pd = fmr->pd; |
| 821 | ret = fmr->device->dealloc_fmr(fmr); |
| 822 | if (!ret) |
| 823 | atomic_dec(&pd->usecnt); |
| 824 | |
| 825 | return ret; |
| 826 | } |
| 827 | EXPORT_SYMBOL(ib_dealloc_fmr); |
| 828 | |
| 829 | /* Multicast groups */ |
| 830 | |
| 831 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) |
| 832 | { |
Jack Morgenstein | 0c33aee | 2005-09-26 11:47:53 -0700 | [diff] [blame] | 833 | if (!qp->device->attach_mcast) |
| 834 | return -ENOSYS; |
| 835 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) |
| 836 | return -EINVAL; |
| 837 | |
| 838 | return qp->device->attach_mcast(qp, gid, lid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | } |
| 840 | EXPORT_SYMBOL(ib_attach_mcast); |
| 841 | |
| 842 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) |
| 843 | { |
Jack Morgenstein | 0c33aee | 2005-09-26 11:47:53 -0700 | [diff] [blame] | 844 | if (!qp->device->detach_mcast) |
| 845 | return -ENOSYS; |
| 846 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) |
| 847 | return -EINVAL; |
| 848 | |
| 849 | return qp->device->detach_mcast(qp, gid, lid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | } |
| 851 | EXPORT_SYMBOL(ib_detach_mcast); |