Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. |
| 3 | * |
| 4 | * This software is available to you under a choice of one of two |
| 5 | * licenses. You may choose to be licensed under the terms of the GNU |
| 6 | * General Public License (GPL) Version 2, available from the file |
| 7 | * COPYING in the main directory of this source tree, or the |
| 8 | * OpenIB.org BSD license below: |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or |
| 11 | * without modification, are permitted provided that the following |
| 12 | * conditions are met: |
| 13 | * |
| 14 | * - Redistributions of source code must retain the above |
| 15 | * copyright notice, this list of conditions and the following |
| 16 | * disclaimer. |
| 17 | * |
| 18 | * - Redistributions in binary form must reproduce the above |
| 19 | * copyright notice, this list of conditions and the following |
| 20 | * disclaimer in the documentation and/or other materials |
| 21 | * provided with the distribution. |
| 22 | * |
| 23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 30 | * SOFTWARE. |
| 31 | */ |
| 32 | |
| 33 | #include <rdma/ib_mad.h> |
| 34 | #include <rdma/ib_user_verbs.h> |
| 35 | #include <linux/utsname.h> |
| 36 | |
| 37 | #include "ipath_kernel.h" |
| 38 | #include "ipath_verbs.h" |
| 39 | #include "ips_common.h" |
| 40 | |
| 41 | /* Not static, because we don't want the compiler removing it */ |
| 42 | const char ipath_verbs_version[] = "ipath_verbs " IPATH_IDSTR; |
| 43 | |
Roland Dreier | ac2ae4c | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 44 | static unsigned int ib_ipath_qp_table_size = 251; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 45 | module_param_named(qp_table_size, ib_ipath_qp_table_size, uint, S_IRUGO); |
| 46 | MODULE_PARM_DESC(qp_table_size, "QP table size"); |
| 47 | |
| 48 | unsigned int ib_ipath_lkey_table_size = 12; |
| 49 | module_param_named(lkey_table_size, ib_ipath_lkey_table_size, uint, |
| 50 | S_IRUGO); |
| 51 | MODULE_PARM_DESC(lkey_table_size, |
| 52 | "LKEY table size in bits (2^n, 1 <= n <= 23)"); |
| 53 | |
| 54 | unsigned int ib_ipath_debug; /* debug mask */ |
| 55 | module_param_named(debug, ib_ipath_debug, uint, S_IWUSR | S_IRUGO); |
| 56 | MODULE_PARM_DESC(debug, "Verbs debug mask"); |
| 57 | |
| 58 | MODULE_LICENSE("GPL"); |
| 59 | MODULE_AUTHOR("PathScale <support@pathscale.com>"); |
| 60 | MODULE_DESCRIPTION("Pathscale InfiniPath driver"); |
| 61 | |
| 62 | const int ib_ipath_state_ops[IB_QPS_ERR + 1] = { |
| 63 | [IB_QPS_RESET] = 0, |
| 64 | [IB_QPS_INIT] = IPATH_POST_RECV_OK, |
| 65 | [IB_QPS_RTR] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK, |
| 66 | [IB_QPS_RTS] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK | |
| 67 | IPATH_POST_SEND_OK | IPATH_PROCESS_SEND_OK, |
| 68 | [IB_QPS_SQD] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK | |
| 69 | IPATH_POST_SEND_OK, |
| 70 | [IB_QPS_SQE] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK, |
| 71 | [IB_QPS_ERR] = 0, |
| 72 | }; |
| 73 | |
| 74 | /* |
| 75 | * Translate ib_wr_opcode into ib_wc_opcode. |
| 76 | */ |
| 77 | const enum ib_wc_opcode ib_ipath_wc_opcode[] = { |
| 78 | [IB_WR_RDMA_WRITE] = IB_WC_RDMA_WRITE, |
| 79 | [IB_WR_RDMA_WRITE_WITH_IMM] = IB_WC_RDMA_WRITE, |
| 80 | [IB_WR_SEND] = IB_WC_SEND, |
| 81 | [IB_WR_SEND_WITH_IMM] = IB_WC_SEND, |
| 82 | [IB_WR_RDMA_READ] = IB_WC_RDMA_READ, |
| 83 | [IB_WR_ATOMIC_CMP_AND_SWP] = IB_WC_COMP_SWAP, |
| 84 | [IB_WR_ATOMIC_FETCH_AND_ADD] = IB_WC_FETCH_ADD |
| 85 | }; |
| 86 | |
| 87 | /* |
| 88 | * System image GUID. |
| 89 | */ |
Roland Dreier | ac2ae4c | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 90 | static __be64 sys_image_guid; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 91 | |
| 92 | /** |
| 93 | * ipath_copy_sge - copy data to SGE memory |
| 94 | * @ss: the SGE state |
| 95 | * @data: the data to copy |
| 96 | * @length: the length of the data |
| 97 | */ |
| 98 | void ipath_copy_sge(struct ipath_sge_state *ss, void *data, u32 length) |
| 99 | { |
| 100 | struct ipath_sge *sge = &ss->sge; |
| 101 | |
| 102 | while (length) { |
| 103 | u32 len = sge->length; |
| 104 | |
| 105 | BUG_ON(len == 0); |
| 106 | if (len > length) |
| 107 | len = length; |
| 108 | memcpy(sge->vaddr, data, len); |
| 109 | sge->vaddr += len; |
| 110 | sge->length -= len; |
| 111 | sge->sge_length -= len; |
| 112 | if (sge->sge_length == 0) { |
| 113 | if (--ss->num_sge) |
| 114 | *sge = *ss->sg_list++; |
| 115 | } else if (sge->length == 0 && sge->mr != NULL) { |
| 116 | if (++sge->n >= IPATH_SEGSZ) { |
| 117 | if (++sge->m >= sge->mr->mapsz) |
| 118 | break; |
| 119 | sge->n = 0; |
| 120 | } |
| 121 | sge->vaddr = |
| 122 | sge->mr->map[sge->m]->segs[sge->n].vaddr; |
| 123 | sge->length = |
| 124 | sge->mr->map[sge->m]->segs[sge->n].length; |
| 125 | } |
| 126 | data += len; |
| 127 | length -= len; |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * ipath_skip_sge - skip over SGE memory - XXX almost dup of prev func |
| 133 | * @ss: the SGE state |
| 134 | * @length: the number of bytes to skip |
| 135 | */ |
| 136 | void ipath_skip_sge(struct ipath_sge_state *ss, u32 length) |
| 137 | { |
| 138 | struct ipath_sge *sge = &ss->sge; |
| 139 | |
| 140 | while (length > sge->sge_length) { |
| 141 | length -= sge->sge_length; |
| 142 | ss->sge = *ss->sg_list++; |
| 143 | } |
| 144 | while (length) { |
| 145 | u32 len = sge->length; |
| 146 | |
| 147 | BUG_ON(len == 0); |
| 148 | if (len > length) |
| 149 | len = length; |
| 150 | sge->vaddr += len; |
| 151 | sge->length -= len; |
| 152 | sge->sge_length -= len; |
| 153 | if (sge->sge_length == 0) { |
| 154 | if (--ss->num_sge) |
| 155 | *sge = *ss->sg_list++; |
| 156 | } else if (sge->length == 0 && sge->mr != NULL) { |
| 157 | if (++sge->n >= IPATH_SEGSZ) { |
| 158 | if (++sge->m >= sge->mr->mapsz) |
| 159 | break; |
| 160 | sge->n = 0; |
| 161 | } |
| 162 | sge->vaddr = |
| 163 | sge->mr->map[sge->m]->segs[sge->n].vaddr; |
| 164 | sge->length = |
| 165 | sge->mr->map[sge->m]->segs[sge->n].length; |
| 166 | } |
| 167 | length -= len; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * ipath_post_send - post a send on a QP |
| 173 | * @ibqp: the QP to post the send on |
| 174 | * @wr: the list of work requests to post |
| 175 | * @bad_wr: the first bad WR is put here |
| 176 | * |
| 177 | * This may be called from interrupt context. |
| 178 | */ |
| 179 | static int ipath_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, |
| 180 | struct ib_send_wr **bad_wr) |
| 181 | { |
| 182 | struct ipath_qp *qp = to_iqp(ibqp); |
| 183 | int err = 0; |
| 184 | |
| 185 | /* Check that state is OK to post send. */ |
| 186 | if (!(ib_ipath_state_ops[qp->state] & IPATH_POST_SEND_OK)) { |
| 187 | *bad_wr = wr; |
| 188 | err = -EINVAL; |
| 189 | goto bail; |
| 190 | } |
| 191 | |
| 192 | for (; wr; wr = wr->next) { |
| 193 | switch (qp->ibqp.qp_type) { |
| 194 | case IB_QPT_UC: |
| 195 | case IB_QPT_RC: |
| 196 | err = ipath_post_rc_send(qp, wr); |
| 197 | break; |
| 198 | |
| 199 | case IB_QPT_SMI: |
| 200 | case IB_QPT_GSI: |
| 201 | case IB_QPT_UD: |
| 202 | err = ipath_post_ud_send(qp, wr); |
| 203 | break; |
| 204 | |
| 205 | default: |
| 206 | err = -EINVAL; |
| 207 | } |
| 208 | if (err) { |
| 209 | *bad_wr = wr; |
| 210 | break; |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | bail: |
| 215 | return err; |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * ipath_post_receive - post a receive on a QP |
| 220 | * @ibqp: the QP to post the receive on |
| 221 | * @wr: the WR to post |
| 222 | * @bad_wr: the first bad WR is put here |
| 223 | * |
| 224 | * This may be called from interrupt context. |
| 225 | */ |
| 226 | static int ipath_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr, |
| 227 | struct ib_recv_wr **bad_wr) |
| 228 | { |
| 229 | struct ipath_qp *qp = to_iqp(ibqp); |
| 230 | unsigned long flags; |
| 231 | int ret; |
| 232 | |
| 233 | /* Check that state is OK to post receive. */ |
| 234 | if (!(ib_ipath_state_ops[qp->state] & IPATH_POST_RECV_OK)) { |
| 235 | *bad_wr = wr; |
| 236 | ret = -EINVAL; |
| 237 | goto bail; |
| 238 | } |
| 239 | |
| 240 | for (; wr; wr = wr->next) { |
| 241 | struct ipath_rwqe *wqe; |
| 242 | u32 next; |
| 243 | int i, j; |
| 244 | |
| 245 | if (wr->num_sge > qp->r_rq.max_sge) { |
| 246 | *bad_wr = wr; |
| 247 | ret = -ENOMEM; |
| 248 | goto bail; |
| 249 | } |
| 250 | |
| 251 | spin_lock_irqsave(&qp->r_rq.lock, flags); |
| 252 | next = qp->r_rq.head + 1; |
| 253 | if (next >= qp->r_rq.size) |
| 254 | next = 0; |
| 255 | if (next == qp->r_rq.tail) { |
| 256 | spin_unlock_irqrestore(&qp->r_rq.lock, flags); |
| 257 | *bad_wr = wr; |
| 258 | ret = -ENOMEM; |
| 259 | goto bail; |
| 260 | } |
| 261 | |
| 262 | wqe = get_rwqe_ptr(&qp->r_rq, qp->r_rq.head); |
| 263 | wqe->wr_id = wr->wr_id; |
| 264 | wqe->sg_list[0].mr = NULL; |
| 265 | wqe->sg_list[0].vaddr = NULL; |
| 266 | wqe->sg_list[0].length = 0; |
| 267 | wqe->sg_list[0].sge_length = 0; |
| 268 | wqe->length = 0; |
| 269 | for (i = 0, j = 0; i < wr->num_sge; i++) { |
| 270 | /* Check LKEY */ |
| 271 | if (to_ipd(qp->ibqp.pd)->user && |
| 272 | wr->sg_list[i].lkey == 0) { |
| 273 | spin_unlock_irqrestore(&qp->r_rq.lock, |
| 274 | flags); |
| 275 | *bad_wr = wr; |
| 276 | ret = -EINVAL; |
| 277 | goto bail; |
| 278 | } |
| 279 | if (wr->sg_list[i].length == 0) |
| 280 | continue; |
| 281 | if (!ipath_lkey_ok( |
| 282 | &to_idev(qp->ibqp.device)->lk_table, |
| 283 | &wqe->sg_list[j], &wr->sg_list[i], |
| 284 | IB_ACCESS_LOCAL_WRITE)) { |
| 285 | spin_unlock_irqrestore(&qp->r_rq.lock, |
| 286 | flags); |
| 287 | *bad_wr = wr; |
| 288 | ret = -EINVAL; |
| 289 | goto bail; |
| 290 | } |
| 291 | wqe->length += wr->sg_list[i].length; |
| 292 | j++; |
| 293 | } |
| 294 | wqe->num_sge = j; |
| 295 | qp->r_rq.head = next; |
| 296 | spin_unlock_irqrestore(&qp->r_rq.lock, flags); |
| 297 | } |
| 298 | ret = 0; |
| 299 | |
| 300 | bail: |
| 301 | return ret; |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * ipath_qp_rcv - processing an incoming packet on a QP |
| 306 | * @dev: the device the packet came on |
| 307 | * @hdr: the packet header |
| 308 | * @has_grh: true if the packet has a GRH |
| 309 | * @data: the packet data |
| 310 | * @tlen: the packet length |
| 311 | * @qp: the QP the packet came on |
| 312 | * |
| 313 | * This is called from ipath_ib_rcv() to process an incoming packet |
| 314 | * for the given QP. |
| 315 | * Called at interrupt level. |
| 316 | */ |
| 317 | static void ipath_qp_rcv(struct ipath_ibdev *dev, |
| 318 | struct ipath_ib_header *hdr, int has_grh, |
| 319 | void *data, u32 tlen, struct ipath_qp *qp) |
| 320 | { |
| 321 | /* Check for valid receive state. */ |
| 322 | if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) { |
| 323 | dev->n_pkt_drops++; |
| 324 | return; |
| 325 | } |
| 326 | |
| 327 | switch (qp->ibqp.qp_type) { |
| 328 | case IB_QPT_SMI: |
| 329 | case IB_QPT_GSI: |
| 330 | case IB_QPT_UD: |
| 331 | ipath_ud_rcv(dev, hdr, has_grh, data, tlen, qp); |
| 332 | break; |
| 333 | |
| 334 | case IB_QPT_RC: |
| 335 | ipath_rc_rcv(dev, hdr, has_grh, data, tlen, qp); |
| 336 | break; |
| 337 | |
| 338 | case IB_QPT_UC: |
| 339 | ipath_uc_rcv(dev, hdr, has_grh, data, tlen, qp); |
| 340 | break; |
| 341 | |
| 342 | default: |
| 343 | break; |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | /** |
| 348 | * ipath_ib_rcv - process and incoming packet |
| 349 | * @arg: the device pointer |
| 350 | * @rhdr: the header of the packet |
| 351 | * @data: the packet data |
| 352 | * @tlen: the packet length |
| 353 | * |
| 354 | * This is called from ipath_kreceive() to process an incoming packet at |
| 355 | * interrupt level. Tlen is the length of the header + data + CRC in bytes. |
| 356 | */ |
| 357 | static void ipath_ib_rcv(void *arg, void *rhdr, void *data, u32 tlen) |
| 358 | { |
| 359 | struct ipath_ibdev *dev = (struct ipath_ibdev *) arg; |
| 360 | struct ipath_ib_header *hdr = rhdr; |
| 361 | struct ipath_other_headers *ohdr; |
| 362 | struct ipath_qp *qp; |
| 363 | u32 qp_num; |
| 364 | int lnh; |
| 365 | u8 opcode; |
| 366 | u16 lid; |
| 367 | |
| 368 | if (unlikely(dev == NULL)) |
| 369 | goto bail; |
| 370 | |
| 371 | if (unlikely(tlen < 24)) { /* LRH+BTH+CRC */ |
| 372 | dev->rcv_errors++; |
| 373 | goto bail; |
| 374 | } |
| 375 | |
| 376 | /* Check for a valid destination LID (see ch. 7.11.1). */ |
| 377 | lid = be16_to_cpu(hdr->lrh[1]); |
| 378 | if (lid < IPS_MULTICAST_LID_BASE) { |
| 379 | lid &= ~((1 << (dev->mkeyprot_resv_lmc & 7)) - 1); |
| 380 | if (unlikely(lid != ipath_layer_get_lid(dev->dd))) { |
| 381 | dev->rcv_errors++; |
| 382 | goto bail; |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | /* Check for GRH */ |
| 387 | lnh = be16_to_cpu(hdr->lrh[0]) & 3; |
| 388 | if (lnh == IPS_LRH_BTH) |
| 389 | ohdr = &hdr->u.oth; |
| 390 | else if (lnh == IPS_LRH_GRH) |
| 391 | ohdr = &hdr->u.l.oth; |
| 392 | else { |
| 393 | dev->rcv_errors++; |
| 394 | goto bail; |
| 395 | } |
| 396 | |
| 397 | opcode = be32_to_cpu(ohdr->bth[0]) >> 24; |
| 398 | dev->opstats[opcode].n_bytes += tlen; |
| 399 | dev->opstats[opcode].n_packets++; |
| 400 | |
| 401 | /* Get the destination QP number. */ |
| 402 | qp_num = be32_to_cpu(ohdr->bth[1]) & IPS_QPN_MASK; |
| 403 | if (qp_num == IPS_MULTICAST_QPN) { |
| 404 | struct ipath_mcast *mcast; |
| 405 | struct ipath_mcast_qp *p; |
| 406 | |
| 407 | mcast = ipath_mcast_find(&hdr->u.l.grh.dgid); |
| 408 | if (mcast == NULL) { |
| 409 | dev->n_pkt_drops++; |
| 410 | goto bail; |
| 411 | } |
| 412 | dev->n_multicast_rcv++; |
| 413 | list_for_each_entry_rcu(p, &mcast->qp_list, list) |
| 414 | ipath_qp_rcv(dev, hdr, lnh == IPS_LRH_GRH, data, |
| 415 | tlen, p->qp); |
| 416 | /* |
| 417 | * Notify ipath_multicast_detach() if it is waiting for us |
| 418 | * to finish. |
| 419 | */ |
| 420 | if (atomic_dec_return(&mcast->refcount) <= 1) |
| 421 | wake_up(&mcast->wait); |
| 422 | } else { |
| 423 | qp = ipath_lookup_qpn(&dev->qp_table, qp_num); |
| 424 | if (qp) { |
| 425 | dev->n_unicast_rcv++; |
| 426 | ipath_qp_rcv(dev, hdr, lnh == IPS_LRH_GRH, data, |
| 427 | tlen, qp); |
| 428 | /* |
| 429 | * Notify ipath_destroy_qp() if it is waiting |
| 430 | * for us to finish. |
| 431 | */ |
| 432 | if (atomic_dec_and_test(&qp->refcount)) |
| 433 | wake_up(&qp->wait); |
| 434 | } else |
| 435 | dev->n_pkt_drops++; |
| 436 | } |
| 437 | |
| 438 | bail:; |
| 439 | } |
| 440 | |
| 441 | /** |
| 442 | * ipath_ib_timer - verbs timer |
| 443 | * @arg: the device pointer |
| 444 | * |
| 445 | * This is called from ipath_do_rcv_timer() at interrupt level to check for |
| 446 | * QPs which need retransmits and to collect performance numbers. |
| 447 | */ |
| 448 | static void ipath_ib_timer(void *arg) |
| 449 | { |
| 450 | struct ipath_ibdev *dev = (struct ipath_ibdev *) arg; |
| 451 | struct ipath_qp *resend = NULL; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 452 | struct list_head *last; |
| 453 | struct ipath_qp *qp; |
| 454 | unsigned long flags; |
| 455 | |
| 456 | if (dev == NULL) |
| 457 | return; |
| 458 | |
| 459 | spin_lock_irqsave(&dev->pending_lock, flags); |
| 460 | /* Start filling the next pending queue. */ |
| 461 | if (++dev->pending_index >= ARRAY_SIZE(dev->pending)) |
| 462 | dev->pending_index = 0; |
| 463 | /* Save any requests still in the new queue, they have timed out. */ |
| 464 | last = &dev->pending[dev->pending_index]; |
| 465 | while (!list_empty(last)) { |
| 466 | qp = list_entry(last->next, struct ipath_qp, timerwait); |
Bryan O'Sullivan | 94b8d9f | 2006-05-23 11:32:32 -0700 | [diff] [blame] | 467 | list_del_init(&qp->timerwait); |
Bryan O'Sullivan | 9b2017f | 2006-04-24 14:23:06 -0700 | [diff] [blame] | 468 | qp->timer_next = resend; |
| 469 | resend = qp; |
| 470 | atomic_inc(&qp->refcount); |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 471 | } |
| 472 | last = &dev->rnrwait; |
| 473 | if (!list_empty(last)) { |
| 474 | qp = list_entry(last->next, struct ipath_qp, timerwait); |
| 475 | if (--qp->s_rnr_timeout == 0) { |
| 476 | do { |
Bryan O'Sullivan | 94b8d9f | 2006-05-23 11:32:32 -0700 | [diff] [blame] | 477 | list_del_init(&qp->timerwait); |
Bryan O'Sullivan | 9b2017f | 2006-04-24 14:23:06 -0700 | [diff] [blame] | 478 | tasklet_hi_schedule(&qp->s_task); |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 479 | if (list_empty(last)) |
| 480 | break; |
| 481 | qp = list_entry(last->next, struct ipath_qp, |
| 482 | timerwait); |
| 483 | } while (qp->s_rnr_timeout == 0); |
| 484 | } |
| 485 | } |
| 486 | /* |
| 487 | * We should only be in the started state if pma_sample_start != 0 |
| 488 | */ |
| 489 | if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_STARTED && |
| 490 | --dev->pma_sample_start == 0) { |
| 491 | dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_RUNNING; |
| 492 | ipath_layer_snapshot_counters(dev->dd, &dev->ipath_sword, |
| 493 | &dev->ipath_rword, |
| 494 | &dev->ipath_spkts, |
| 495 | &dev->ipath_rpkts, |
| 496 | &dev->ipath_xmit_wait); |
| 497 | } |
| 498 | if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_RUNNING) { |
| 499 | if (dev->pma_sample_interval == 0) { |
| 500 | u64 ta, tb, tc, td, te; |
| 501 | |
| 502 | dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_DONE; |
| 503 | ipath_layer_snapshot_counters(dev->dd, &ta, &tb, |
| 504 | &tc, &td, &te); |
| 505 | |
| 506 | dev->ipath_sword = ta - dev->ipath_sword; |
| 507 | dev->ipath_rword = tb - dev->ipath_rword; |
| 508 | dev->ipath_spkts = tc - dev->ipath_spkts; |
| 509 | dev->ipath_rpkts = td - dev->ipath_rpkts; |
| 510 | dev->ipath_xmit_wait = te - dev->ipath_xmit_wait; |
| 511 | } |
| 512 | else |
| 513 | dev->pma_sample_interval--; |
| 514 | } |
| 515 | spin_unlock_irqrestore(&dev->pending_lock, flags); |
| 516 | |
| 517 | /* XXX What if timer fires again while this is running? */ |
Bryan O'Sullivan | 9b2017f | 2006-04-24 14:23:06 -0700 | [diff] [blame] | 518 | for (qp = resend; qp != NULL; qp = qp->timer_next) { |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 519 | struct ib_wc wc; |
| 520 | |
| 521 | spin_lock_irqsave(&qp->s_lock, flags); |
| 522 | if (qp->s_last != qp->s_tail && qp->state == IB_QPS_RTS) { |
| 523 | dev->n_timeouts++; |
| 524 | ipath_restart_rc(qp, qp->s_last_psn + 1, &wc); |
| 525 | } |
| 526 | spin_unlock_irqrestore(&qp->s_lock, flags); |
| 527 | |
| 528 | /* Notify ipath_destroy_qp() if it is waiting. */ |
| 529 | if (atomic_dec_and_test(&qp->refcount)) |
| 530 | wake_up(&qp->wait); |
| 531 | } |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 532 | } |
| 533 | |
| 534 | /** |
| 535 | * ipath_ib_piobufavail - callback when a PIO buffer is available |
| 536 | * @arg: the device pointer |
| 537 | * |
| 538 | * This is called from ipath_intr() at interrupt level when a PIO buffer is |
| 539 | * available after ipath_verbs_send() returned an error that no buffers were |
Bryan O'Sullivan | 9b2017f | 2006-04-24 14:23:06 -0700 | [diff] [blame] | 540 | * available. Return 1 if we consumed all the PIO buffers and we still have |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 541 | * QPs waiting for buffers (for now, just do a tasklet_hi_schedule and |
Bryan O'Sullivan | 9b2017f | 2006-04-24 14:23:06 -0700 | [diff] [blame] | 542 | * return zero). |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 543 | */ |
| 544 | static int ipath_ib_piobufavail(void *arg) |
| 545 | { |
| 546 | struct ipath_ibdev *dev = (struct ipath_ibdev *) arg; |
| 547 | struct ipath_qp *qp; |
| 548 | unsigned long flags; |
| 549 | |
| 550 | if (dev == NULL) |
| 551 | goto bail; |
| 552 | |
| 553 | spin_lock_irqsave(&dev->pending_lock, flags); |
| 554 | while (!list_empty(&dev->piowait)) { |
| 555 | qp = list_entry(dev->piowait.next, struct ipath_qp, |
| 556 | piowait); |
Bryan O'Sullivan | 94b8d9f | 2006-05-23 11:32:32 -0700 | [diff] [blame] | 557 | list_del_init(&qp->piowait); |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 558 | tasklet_hi_schedule(&qp->s_task); |
| 559 | } |
| 560 | spin_unlock_irqrestore(&dev->pending_lock, flags); |
| 561 | |
| 562 | bail: |
Bryan O'Sullivan | 9b2017f | 2006-04-24 14:23:06 -0700 | [diff] [blame] | 563 | return 0; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 564 | } |
| 565 | |
| 566 | static int ipath_query_device(struct ib_device *ibdev, |
| 567 | struct ib_device_attr *props) |
| 568 | { |
| 569 | struct ipath_ibdev *dev = to_idev(ibdev); |
| 570 | u32 vendor, boardrev, majrev, minrev; |
| 571 | |
| 572 | memset(props, 0, sizeof(*props)); |
| 573 | |
| 574 | props->device_cap_flags = IB_DEVICE_BAD_PKEY_CNTR | |
| 575 | IB_DEVICE_BAD_QKEY_CNTR | IB_DEVICE_SHUTDOWN_PORT | |
| 576 | IB_DEVICE_SYS_IMAGE_GUID; |
| 577 | ipath_layer_query_device(dev->dd, &vendor, &boardrev, |
| 578 | &majrev, &minrev); |
| 579 | props->vendor_id = vendor; |
| 580 | props->vendor_part_id = boardrev; |
| 581 | props->hw_ver = boardrev << 16 | majrev << 8 | minrev; |
| 582 | |
| 583 | props->sys_image_guid = dev->sys_image_guid; |
| 584 | |
| 585 | props->max_mr_size = ~0ull; |
| 586 | props->max_qp = 0xffff; |
| 587 | props->max_qp_wr = 0xffff; |
| 588 | props->max_sge = 255; |
| 589 | props->max_cq = 0xffff; |
| 590 | props->max_cqe = 0xffff; |
| 591 | props->max_mr = 0xffff; |
| 592 | props->max_pd = 0xffff; |
| 593 | props->max_qp_rd_atom = 1; |
| 594 | props->max_qp_init_rd_atom = 1; |
| 595 | /* props->max_res_rd_atom */ |
| 596 | props->max_srq = 0xffff; |
| 597 | props->max_srq_wr = 0xffff; |
| 598 | props->max_srq_sge = 255; |
| 599 | /* props->local_ca_ack_delay */ |
| 600 | props->atomic_cap = IB_ATOMIC_HCA; |
| 601 | props->max_pkeys = ipath_layer_get_npkeys(dev->dd); |
| 602 | props->max_mcast_grp = 0xffff; |
| 603 | props->max_mcast_qp_attach = 0xffff; |
| 604 | props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * |
| 605 | props->max_mcast_grp; |
| 606 | |
| 607 | return 0; |
| 608 | } |
| 609 | |
| 610 | const u8 ipath_cvt_physportstate[16] = { |
| 611 | [INFINIPATH_IBCS_LT_STATE_DISABLED] = 3, |
| 612 | [INFINIPATH_IBCS_LT_STATE_LINKUP] = 5, |
| 613 | [INFINIPATH_IBCS_LT_STATE_POLLACTIVE] = 2, |
| 614 | [INFINIPATH_IBCS_LT_STATE_POLLQUIET] = 2, |
| 615 | [INFINIPATH_IBCS_LT_STATE_SLEEPDELAY] = 1, |
| 616 | [INFINIPATH_IBCS_LT_STATE_SLEEPQUIET] = 1, |
| 617 | [INFINIPATH_IBCS_LT_STATE_CFGDEBOUNCE] = 4, |
| 618 | [INFINIPATH_IBCS_LT_STATE_CFGRCVFCFG] = 4, |
| 619 | [INFINIPATH_IBCS_LT_STATE_CFGWAITRMT] = 4, |
| 620 | [INFINIPATH_IBCS_LT_STATE_CFGIDLE] = 4, |
| 621 | [INFINIPATH_IBCS_LT_STATE_RECOVERRETRAIN] = 6, |
| 622 | [INFINIPATH_IBCS_LT_STATE_RECOVERWAITRMT] = 6, |
| 623 | [INFINIPATH_IBCS_LT_STATE_RECOVERIDLE] = 6, |
| 624 | }; |
| 625 | |
| 626 | static int ipath_query_port(struct ib_device *ibdev, |
| 627 | u8 port, struct ib_port_attr *props) |
| 628 | { |
| 629 | struct ipath_ibdev *dev = to_idev(ibdev); |
| 630 | enum ib_mtu mtu; |
| 631 | u16 lid = ipath_layer_get_lid(dev->dd); |
| 632 | u64 ibcstat; |
| 633 | |
| 634 | memset(props, 0, sizeof(*props)); |
| 635 | props->lid = lid ? lid : __constant_be16_to_cpu(IB_LID_PERMISSIVE); |
| 636 | props->lmc = dev->mkeyprot_resv_lmc & 7; |
| 637 | props->sm_lid = dev->sm_lid; |
| 638 | props->sm_sl = dev->sm_sl; |
| 639 | ibcstat = ipath_layer_get_lastibcstat(dev->dd); |
| 640 | props->state = ((ibcstat >> 4) & 0x3) + 1; |
| 641 | /* See phys_state_show() */ |
| 642 | props->phys_state = ipath_cvt_physportstate[ |
| 643 | ipath_layer_get_lastibcstat(dev->dd) & 0xf]; |
| 644 | props->port_cap_flags = dev->port_cap_flags; |
| 645 | props->gid_tbl_len = 1; |
| 646 | props->max_msg_sz = 4096; |
| 647 | props->pkey_tbl_len = ipath_layer_get_npkeys(dev->dd); |
| 648 | props->bad_pkey_cntr = ipath_layer_get_cr_errpkey(dev->dd) - |
| 649 | dev->n_pkey_violations; |
| 650 | props->qkey_viol_cntr = dev->qkey_violations; |
| 651 | props->active_width = IB_WIDTH_4X; |
| 652 | /* See rate_show() */ |
| 653 | props->active_speed = 1; /* Regular 10Mbs speed. */ |
| 654 | props->max_vl_num = 1; /* VLCap = VL0 */ |
| 655 | props->init_type_reply = 0; |
| 656 | |
| 657 | props->max_mtu = IB_MTU_4096; |
| 658 | switch (ipath_layer_get_ibmtu(dev->dd)) { |
| 659 | case 4096: |
| 660 | mtu = IB_MTU_4096; |
| 661 | break; |
| 662 | case 2048: |
| 663 | mtu = IB_MTU_2048; |
| 664 | break; |
| 665 | case 1024: |
| 666 | mtu = IB_MTU_1024; |
| 667 | break; |
| 668 | case 512: |
| 669 | mtu = IB_MTU_512; |
| 670 | break; |
| 671 | case 256: |
| 672 | mtu = IB_MTU_256; |
| 673 | break; |
| 674 | default: |
| 675 | mtu = IB_MTU_2048; |
| 676 | } |
| 677 | props->active_mtu = mtu; |
| 678 | props->subnet_timeout = dev->subnet_timeout; |
| 679 | |
| 680 | return 0; |
| 681 | } |
| 682 | |
| 683 | static int ipath_modify_device(struct ib_device *device, |
| 684 | int device_modify_mask, |
| 685 | struct ib_device_modify *device_modify) |
| 686 | { |
| 687 | int ret; |
| 688 | |
| 689 | if (device_modify_mask & ~(IB_DEVICE_MODIFY_SYS_IMAGE_GUID | |
| 690 | IB_DEVICE_MODIFY_NODE_DESC)) { |
| 691 | ret = -EOPNOTSUPP; |
| 692 | goto bail; |
| 693 | } |
| 694 | |
| 695 | if (device_modify_mask & IB_DEVICE_MODIFY_NODE_DESC) |
| 696 | memcpy(device->node_desc, device_modify->node_desc, 64); |
| 697 | |
| 698 | if (device_modify_mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) |
| 699 | to_idev(device)->sys_image_guid = |
| 700 | cpu_to_be64(device_modify->sys_image_guid); |
| 701 | |
| 702 | ret = 0; |
| 703 | |
| 704 | bail: |
| 705 | return ret; |
| 706 | } |
| 707 | |
| 708 | static int ipath_modify_port(struct ib_device *ibdev, |
| 709 | u8 port, int port_modify_mask, |
| 710 | struct ib_port_modify *props) |
| 711 | { |
| 712 | struct ipath_ibdev *dev = to_idev(ibdev); |
| 713 | |
| 714 | dev->port_cap_flags |= props->set_port_cap_mask; |
| 715 | dev->port_cap_flags &= ~props->clr_port_cap_mask; |
| 716 | if (port_modify_mask & IB_PORT_SHUTDOWN) |
| 717 | ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKDOWN); |
| 718 | if (port_modify_mask & IB_PORT_RESET_QKEY_CNTR) |
| 719 | dev->qkey_violations = 0; |
| 720 | return 0; |
| 721 | } |
| 722 | |
| 723 | static int ipath_query_gid(struct ib_device *ibdev, u8 port, |
| 724 | int index, union ib_gid *gid) |
| 725 | { |
| 726 | struct ipath_ibdev *dev = to_idev(ibdev); |
| 727 | int ret; |
| 728 | |
| 729 | if (index >= 1) { |
| 730 | ret = -EINVAL; |
| 731 | goto bail; |
| 732 | } |
| 733 | gid->global.subnet_prefix = dev->gid_prefix; |
| 734 | gid->global.interface_id = ipath_layer_get_guid(dev->dd); |
| 735 | |
| 736 | ret = 0; |
| 737 | |
| 738 | bail: |
| 739 | return ret; |
| 740 | } |
| 741 | |
| 742 | static struct ib_pd *ipath_alloc_pd(struct ib_device *ibdev, |
| 743 | struct ib_ucontext *context, |
| 744 | struct ib_udata *udata) |
| 745 | { |
| 746 | struct ipath_pd *pd; |
| 747 | struct ib_pd *ret; |
| 748 | |
| 749 | pd = kmalloc(sizeof *pd, GFP_KERNEL); |
| 750 | if (!pd) { |
| 751 | ret = ERR_PTR(-ENOMEM); |
| 752 | goto bail; |
| 753 | } |
| 754 | |
| 755 | /* ib_alloc_pd() will initialize pd->ibpd. */ |
| 756 | pd->user = udata != NULL; |
| 757 | |
| 758 | ret = &pd->ibpd; |
| 759 | |
| 760 | bail: |
| 761 | return ret; |
| 762 | } |
| 763 | |
| 764 | static int ipath_dealloc_pd(struct ib_pd *ibpd) |
| 765 | { |
| 766 | struct ipath_pd *pd = to_ipd(ibpd); |
| 767 | |
| 768 | kfree(pd); |
| 769 | |
| 770 | return 0; |
| 771 | } |
| 772 | |
| 773 | /** |
| 774 | * ipath_create_ah - create an address handle |
| 775 | * @pd: the protection domain |
| 776 | * @ah_attr: the attributes of the AH |
| 777 | * |
| 778 | * This may be called from interrupt context. |
| 779 | */ |
| 780 | static struct ib_ah *ipath_create_ah(struct ib_pd *pd, |
| 781 | struct ib_ah_attr *ah_attr) |
| 782 | { |
| 783 | struct ipath_ah *ah; |
| 784 | struct ib_ah *ret; |
| 785 | |
| 786 | /* A multicast address requires a GRH (see ch. 8.4.1). */ |
| 787 | if (ah_attr->dlid >= IPS_MULTICAST_LID_BASE && |
| 788 | ah_attr->dlid != IPS_PERMISSIVE_LID && |
| 789 | !(ah_attr->ah_flags & IB_AH_GRH)) { |
| 790 | ret = ERR_PTR(-EINVAL); |
| 791 | goto bail; |
| 792 | } |
| 793 | |
| 794 | ah = kmalloc(sizeof *ah, GFP_ATOMIC); |
| 795 | if (!ah) { |
| 796 | ret = ERR_PTR(-ENOMEM); |
| 797 | goto bail; |
| 798 | } |
| 799 | |
| 800 | /* ib_create_ah() will initialize ah->ibah. */ |
| 801 | ah->attr = *ah_attr; |
| 802 | |
| 803 | ret = &ah->ibah; |
| 804 | |
| 805 | bail: |
| 806 | return ret; |
| 807 | } |
| 808 | |
| 809 | /** |
| 810 | * ipath_destroy_ah - destroy an address handle |
| 811 | * @ibah: the AH to destroy |
| 812 | * |
| 813 | * This may be called from interrupt context. |
| 814 | */ |
| 815 | static int ipath_destroy_ah(struct ib_ah *ibah) |
| 816 | { |
| 817 | struct ipath_ah *ah = to_iah(ibah); |
| 818 | |
| 819 | kfree(ah); |
| 820 | |
| 821 | return 0; |
| 822 | } |
| 823 | |
| 824 | static int ipath_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr) |
| 825 | { |
| 826 | struct ipath_ah *ah = to_iah(ibah); |
| 827 | |
| 828 | *ah_attr = ah->attr; |
| 829 | |
| 830 | return 0; |
| 831 | } |
| 832 | |
| 833 | static int ipath_query_pkey(struct ib_device *ibdev, u8 port, u16 index, |
| 834 | u16 *pkey) |
| 835 | { |
| 836 | struct ipath_ibdev *dev = to_idev(ibdev); |
| 837 | int ret; |
| 838 | |
| 839 | if (index >= ipath_layer_get_npkeys(dev->dd)) { |
| 840 | ret = -EINVAL; |
| 841 | goto bail; |
| 842 | } |
| 843 | |
| 844 | *pkey = ipath_layer_get_pkey(dev->dd, index); |
| 845 | ret = 0; |
| 846 | |
| 847 | bail: |
| 848 | return ret; |
| 849 | } |
| 850 | |
| 851 | |
| 852 | /** |
| 853 | * ipath_alloc_ucontext - allocate a ucontest |
| 854 | * @ibdev: the infiniband device |
| 855 | * @udata: not used by the InfiniPath driver |
| 856 | */ |
| 857 | |
| 858 | static struct ib_ucontext *ipath_alloc_ucontext(struct ib_device *ibdev, |
| 859 | struct ib_udata *udata) |
| 860 | { |
| 861 | struct ipath_ucontext *context; |
| 862 | struct ib_ucontext *ret; |
| 863 | |
| 864 | context = kmalloc(sizeof *context, GFP_KERNEL); |
| 865 | if (!context) { |
| 866 | ret = ERR_PTR(-ENOMEM); |
| 867 | goto bail; |
| 868 | } |
| 869 | |
| 870 | ret = &context->ibucontext; |
| 871 | |
| 872 | bail: |
| 873 | return ret; |
| 874 | } |
| 875 | |
| 876 | static int ipath_dealloc_ucontext(struct ib_ucontext *context) |
| 877 | { |
| 878 | kfree(to_iucontext(context)); |
| 879 | return 0; |
| 880 | } |
| 881 | |
| 882 | static int ipath_verbs_register_sysfs(struct ib_device *dev); |
| 883 | |
| 884 | /** |
| 885 | * ipath_register_ib_device - register our device with the infiniband core |
| 886 | * @unit: the device number to register |
| 887 | * @dd: the device data structure |
| 888 | * Return the allocated ipath_ibdev pointer or NULL on error. |
| 889 | */ |
| 890 | static void *ipath_register_ib_device(int unit, struct ipath_devdata *dd) |
| 891 | { |
| 892 | struct ipath_ibdev *idev; |
| 893 | struct ib_device *dev; |
| 894 | int ret; |
| 895 | |
| 896 | idev = (struct ipath_ibdev *)ib_alloc_device(sizeof *idev); |
| 897 | if (idev == NULL) |
| 898 | goto bail; |
| 899 | |
| 900 | dev = &idev->ibdev; |
| 901 | |
| 902 | /* Only need to initialize non-zero fields. */ |
| 903 | spin_lock_init(&idev->qp_table.lock); |
| 904 | spin_lock_init(&idev->lk_table.lock); |
| 905 | idev->sm_lid = __constant_be16_to_cpu(IB_LID_PERMISSIVE); |
| 906 | /* Set the prefix to the default value (see ch. 4.1.1) */ |
| 907 | idev->gid_prefix = __constant_cpu_to_be64(0xfe80000000000000ULL); |
| 908 | |
| 909 | ret = ipath_init_qp_table(idev, ib_ipath_qp_table_size); |
| 910 | if (ret) |
| 911 | goto err_qp; |
| 912 | |
| 913 | /* |
| 914 | * The top ib_ipath_lkey_table_size bits are used to index the |
| 915 | * table. The lower 8 bits can be owned by the user (copied from |
| 916 | * the LKEY). The remaining bits act as a generation number or tag. |
| 917 | */ |
| 918 | idev->lk_table.max = 1 << ib_ipath_lkey_table_size; |
| 919 | idev->lk_table.table = kzalloc(idev->lk_table.max * |
| 920 | sizeof(*idev->lk_table.table), |
| 921 | GFP_KERNEL); |
| 922 | if (idev->lk_table.table == NULL) { |
| 923 | ret = -ENOMEM; |
| 924 | goto err_lk; |
| 925 | } |
| 926 | spin_lock_init(&idev->pending_lock); |
| 927 | INIT_LIST_HEAD(&idev->pending[0]); |
| 928 | INIT_LIST_HEAD(&idev->pending[1]); |
| 929 | INIT_LIST_HEAD(&idev->pending[2]); |
| 930 | INIT_LIST_HEAD(&idev->piowait); |
| 931 | INIT_LIST_HEAD(&idev->rnrwait); |
| 932 | idev->pending_index = 0; |
| 933 | idev->port_cap_flags = |
| 934 | IB_PORT_SYS_IMAGE_GUID_SUP | IB_PORT_CLIENT_REG_SUP; |
| 935 | idev->pma_counter_select[0] = IB_PMA_PORT_XMIT_DATA; |
| 936 | idev->pma_counter_select[1] = IB_PMA_PORT_RCV_DATA; |
| 937 | idev->pma_counter_select[2] = IB_PMA_PORT_XMIT_PKTS; |
| 938 | idev->pma_counter_select[3] = IB_PMA_PORT_RCV_PKTS; |
| 939 | idev->pma_counter_select[5] = IB_PMA_PORT_XMIT_WAIT; |
| 940 | idev->link_width_enabled = 3; /* 1x or 4x */ |
| 941 | |
| 942 | /* |
| 943 | * The system image GUID is supposed to be the same for all |
| 944 | * IB HCAs in a single system but since there can be other |
| 945 | * device types in the system, we can't be sure this is unique. |
| 946 | */ |
| 947 | if (!sys_image_guid) |
| 948 | sys_image_guid = ipath_layer_get_guid(dd); |
| 949 | idev->sys_image_guid = sys_image_guid; |
| 950 | idev->ib_unit = unit; |
| 951 | idev->dd = dd; |
| 952 | |
| 953 | strlcpy(dev->name, "ipath%d", IB_DEVICE_NAME_MAX); |
Bryan O'Sullivan | 41c75a1 | 2006-05-23 11:32:36 -0700 | [diff] [blame] | 954 | dev->owner = THIS_MODULE; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 955 | dev->node_guid = ipath_layer_get_guid(dd); |
| 956 | dev->uverbs_abi_ver = IPATH_UVERBS_ABI_VERSION; |
| 957 | dev->uverbs_cmd_mask = |
| 958 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | |
| 959 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | |
| 960 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | |
| 961 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | |
| 962 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | |
| 963 | (1ull << IB_USER_VERBS_CMD_CREATE_AH) | |
| 964 | (1ull << IB_USER_VERBS_CMD_DESTROY_AH) | |
| 965 | (1ull << IB_USER_VERBS_CMD_QUERY_AH) | |
| 966 | (1ull << IB_USER_VERBS_CMD_REG_MR) | |
| 967 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | |
| 968 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | |
| 969 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | |
| 970 | (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | |
| 971 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | |
| 972 | (1ull << IB_USER_VERBS_CMD_POLL_CQ) | |
| 973 | (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | |
| 974 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | |
| 975 | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | |
| 976 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | |
| 977 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | |
| 978 | (1ull << IB_USER_VERBS_CMD_POST_SEND) | |
| 979 | (1ull << IB_USER_VERBS_CMD_POST_RECV) | |
| 980 | (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | |
| 981 | (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | |
| 982 | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | |
| 983 | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | |
| 984 | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | |
| 985 | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | |
| 986 | (1ull << IB_USER_VERBS_CMD_POST_SRQ_RECV); |
| 987 | dev->node_type = IB_NODE_CA; |
| 988 | dev->phys_port_cnt = 1; |
| 989 | dev->dma_device = ipath_layer_get_device(dd); |
| 990 | dev->class_dev.dev = dev->dma_device; |
| 991 | dev->query_device = ipath_query_device; |
| 992 | dev->modify_device = ipath_modify_device; |
| 993 | dev->query_port = ipath_query_port; |
| 994 | dev->modify_port = ipath_modify_port; |
| 995 | dev->query_pkey = ipath_query_pkey; |
| 996 | dev->query_gid = ipath_query_gid; |
| 997 | dev->alloc_ucontext = ipath_alloc_ucontext; |
| 998 | dev->dealloc_ucontext = ipath_dealloc_ucontext; |
| 999 | dev->alloc_pd = ipath_alloc_pd; |
| 1000 | dev->dealloc_pd = ipath_dealloc_pd; |
| 1001 | dev->create_ah = ipath_create_ah; |
| 1002 | dev->destroy_ah = ipath_destroy_ah; |
| 1003 | dev->query_ah = ipath_query_ah; |
| 1004 | dev->create_srq = ipath_create_srq; |
| 1005 | dev->modify_srq = ipath_modify_srq; |
| 1006 | dev->query_srq = ipath_query_srq; |
| 1007 | dev->destroy_srq = ipath_destroy_srq; |
| 1008 | dev->create_qp = ipath_create_qp; |
| 1009 | dev->modify_qp = ipath_modify_qp; |
| 1010 | dev->query_qp = ipath_query_qp; |
| 1011 | dev->destroy_qp = ipath_destroy_qp; |
| 1012 | dev->post_send = ipath_post_send; |
| 1013 | dev->post_recv = ipath_post_receive; |
| 1014 | dev->post_srq_recv = ipath_post_srq_receive; |
| 1015 | dev->create_cq = ipath_create_cq; |
| 1016 | dev->destroy_cq = ipath_destroy_cq; |
| 1017 | dev->resize_cq = ipath_resize_cq; |
| 1018 | dev->poll_cq = ipath_poll_cq; |
| 1019 | dev->req_notify_cq = ipath_req_notify_cq; |
| 1020 | dev->get_dma_mr = ipath_get_dma_mr; |
| 1021 | dev->reg_phys_mr = ipath_reg_phys_mr; |
| 1022 | dev->reg_user_mr = ipath_reg_user_mr; |
| 1023 | dev->dereg_mr = ipath_dereg_mr; |
| 1024 | dev->alloc_fmr = ipath_alloc_fmr; |
| 1025 | dev->map_phys_fmr = ipath_map_phys_fmr; |
| 1026 | dev->unmap_fmr = ipath_unmap_fmr; |
| 1027 | dev->dealloc_fmr = ipath_dealloc_fmr; |
| 1028 | dev->attach_mcast = ipath_multicast_attach; |
| 1029 | dev->detach_mcast = ipath_multicast_detach; |
| 1030 | dev->process_mad = ipath_process_mad; |
| 1031 | |
| 1032 | snprintf(dev->node_desc, sizeof(dev->node_desc), |
| 1033 | IPATH_IDSTR " %s kernel_SMA", system_utsname.nodename); |
| 1034 | |
| 1035 | ret = ib_register_device(dev); |
| 1036 | if (ret) |
| 1037 | goto err_reg; |
| 1038 | |
| 1039 | if (ipath_verbs_register_sysfs(dev)) |
| 1040 | goto err_class; |
| 1041 | |
| 1042 | ipath_layer_enable_timer(dd); |
| 1043 | |
| 1044 | goto bail; |
| 1045 | |
| 1046 | err_class: |
| 1047 | ib_unregister_device(dev); |
| 1048 | err_reg: |
| 1049 | kfree(idev->lk_table.table); |
| 1050 | err_lk: |
| 1051 | kfree(idev->qp_table.table); |
| 1052 | err_qp: |
| 1053 | ib_dealloc_device(dev); |
| 1054 | _VERBS_ERROR("ib_ipath%d cannot register verbs (%d)!\n", |
| 1055 | unit, -ret); |
| 1056 | idev = NULL; |
| 1057 | |
| 1058 | bail: |
| 1059 | return idev; |
| 1060 | } |
| 1061 | |
| 1062 | static void ipath_unregister_ib_device(void *arg) |
| 1063 | { |
| 1064 | struct ipath_ibdev *dev = (struct ipath_ibdev *) arg; |
| 1065 | struct ib_device *ibdev = &dev->ibdev; |
| 1066 | |
| 1067 | ipath_layer_disable_timer(dev->dd); |
| 1068 | |
| 1069 | ib_unregister_device(ibdev); |
| 1070 | |
| 1071 | if (!list_empty(&dev->pending[0]) || |
| 1072 | !list_empty(&dev->pending[1]) || |
| 1073 | !list_empty(&dev->pending[2])) |
| 1074 | _VERBS_ERROR("ipath%d pending list not empty!\n", |
| 1075 | dev->ib_unit); |
| 1076 | if (!list_empty(&dev->piowait)) |
| 1077 | _VERBS_ERROR("ipath%d piowait list not empty!\n", |
| 1078 | dev->ib_unit); |
| 1079 | if (!list_empty(&dev->rnrwait)) |
| 1080 | _VERBS_ERROR("ipath%d rnrwait list not empty!\n", |
| 1081 | dev->ib_unit); |
| 1082 | if (!ipath_mcast_tree_empty()) |
| 1083 | _VERBS_ERROR("ipath%d multicast table memory leak!\n", |
| 1084 | dev->ib_unit); |
| 1085 | /* |
| 1086 | * Note that ipath_unregister_ib_device() can be called before all |
| 1087 | * the QPs are destroyed! |
| 1088 | */ |
| 1089 | ipath_free_all_qps(&dev->qp_table); |
| 1090 | kfree(dev->qp_table.table); |
| 1091 | kfree(dev->lk_table.table); |
| 1092 | ib_dealloc_device(ibdev); |
| 1093 | } |
| 1094 | |
Roland Dreier | ac2ae4c | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1095 | static int __init ipath_verbs_init(void) |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1096 | { |
| 1097 | return ipath_verbs_register(ipath_register_ib_device, |
| 1098 | ipath_unregister_ib_device, |
| 1099 | ipath_ib_piobufavail, ipath_ib_rcv, |
| 1100 | ipath_ib_timer); |
| 1101 | } |
| 1102 | |
Roland Dreier | ac2ae4c | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1103 | static void __exit ipath_verbs_cleanup(void) |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1104 | { |
| 1105 | ipath_verbs_unregister(); |
| 1106 | } |
| 1107 | |
| 1108 | static ssize_t show_rev(struct class_device *cdev, char *buf) |
| 1109 | { |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1110 | struct ipath_ibdev *dev = |
| 1111 | container_of(cdev, struct ipath_ibdev, ibdev.class_dev); |
| 1112 | int vendor, boardrev, majrev, minrev; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1113 | |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1114 | ipath_layer_query_device(dev->dd, &vendor, &boardrev, |
| 1115 | &majrev, &minrev); |
| 1116 | return sprintf(buf, "%d.%d\n", majrev, minrev); |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1117 | } |
| 1118 | |
| 1119 | static ssize_t show_hca(struct class_device *cdev, char *buf) |
| 1120 | { |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1121 | struct ipath_ibdev *dev = |
| 1122 | container_of(cdev, struct ipath_ibdev, ibdev.class_dev); |
| 1123 | int ret; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1124 | |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1125 | ret = ipath_layer_get_boardname(dev->dd, buf, 128); |
| 1126 | if (ret < 0) |
| 1127 | goto bail; |
| 1128 | strcat(buf, "\n"); |
| 1129 | ret = strlen(buf); |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1130 | |
| 1131 | bail: |
| 1132 | return ret; |
| 1133 | } |
| 1134 | |
| 1135 | static ssize_t show_stats(struct class_device *cdev, char *buf) |
| 1136 | { |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1137 | struct ipath_ibdev *dev = |
| 1138 | container_of(cdev, struct ipath_ibdev, ibdev.class_dev); |
| 1139 | int i; |
| 1140 | int len; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1141 | |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1142 | len = sprintf(buf, |
| 1143 | "RC resends %d\n" |
Bryan O'Sullivan | 9b2017f | 2006-04-24 14:23:06 -0700 | [diff] [blame] | 1144 | "RC no QACK %d\n" |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1145 | "RC ACKs %d\n" |
| 1146 | "RC SEQ NAKs %d\n" |
| 1147 | "RC RDMA seq %d\n" |
| 1148 | "RC RNR NAKs %d\n" |
| 1149 | "RC OTH NAKs %d\n" |
| 1150 | "RC timeouts %d\n" |
| 1151 | "RC RDMA dup %d\n" |
| 1152 | "piobuf wait %d\n" |
| 1153 | "no piobuf %d\n" |
| 1154 | "PKT drops %d\n" |
| 1155 | "WQE errs %d\n", |
| 1156 | dev->n_rc_resends, dev->n_rc_qacks, dev->n_rc_acks, |
| 1157 | dev->n_seq_naks, dev->n_rdma_seq, dev->n_rnr_naks, |
| 1158 | dev->n_other_naks, dev->n_timeouts, |
| 1159 | dev->n_rdma_dup_busy, dev->n_piowait, |
| 1160 | dev->n_no_piobuf, dev->n_pkt_drops, dev->n_wqe_errs); |
| 1161 | for (i = 0; i < ARRAY_SIZE(dev->opstats); i++) { |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1162 | const struct ipath_opcode_stats *si = &dev->opstats[i]; |
| 1163 | |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1164 | if (!si->n_packets && !si->n_bytes) |
| 1165 | continue; |
| 1166 | len += sprintf(buf + len, "%02x %llu/%llu\n", i, |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1167 | (unsigned long long) si->n_packets, |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1168 | (unsigned long long) si->n_bytes); |
| 1169 | } |
| 1170 | return len; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1171 | } |
| 1172 | |
| 1173 | static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); |
| 1174 | static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); |
| 1175 | static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_hca, NULL); |
| 1176 | static CLASS_DEVICE_ATTR(stats, S_IRUGO, show_stats, NULL); |
| 1177 | |
| 1178 | static struct class_device_attribute *ipath_class_attributes[] = { |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1179 | &class_device_attr_hw_rev, |
| 1180 | &class_device_attr_hca_type, |
| 1181 | &class_device_attr_board_id, |
| 1182 | &class_device_attr_stats |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1183 | }; |
| 1184 | |
| 1185 | static int ipath_verbs_register_sysfs(struct ib_device *dev) |
| 1186 | { |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1187 | int i; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1188 | int ret; |
| 1189 | |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1190 | for (i = 0; i < ARRAY_SIZE(ipath_class_attributes); ++i) |
| 1191 | if (class_device_create_file(&dev->class_dev, |
| 1192 | ipath_class_attributes[i])) { |
| 1193 | ret = 1; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1194 | goto bail; |
| 1195 | } |
| 1196 | |
Roland Dreier | 5494c22 | 2006-04-19 11:40:12 -0700 | [diff] [blame] | 1197 | ret = 0; |
Bryan O'Sullivan | 6522108 | 2006-03-29 15:23:38 -0800 | [diff] [blame] | 1198 | |
| 1199 | bail: |
| 1200 | return ret; |
| 1201 | } |
| 1202 | |
| 1203 | module_init(ipath_verbs_init); |
| 1204 | module_exit(ipath_verbs_cleanup); |