Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. |
Tom Duffy | cd4e8fb | 2005-06-27 14:36:37 -0700 | [diff] [blame] | 3 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 4 | * Copyright (c) 2005 Cisco Systems, Inc. All rights reserved. |
Roland Dreier | 2a1d9b7 | 2005-08-10 23:03:10 -0700 | [diff] [blame] | 5 | * Copyright (c) 2005 Mellanox Technologies. All rights reserved. |
| 6 | * Copyright (c) 2004 Voltaire, Inc. All rights reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * This software is available to you under a choice of one of two |
| 9 | * licenses. You may choose to be licensed under the terms of the GNU |
| 10 | * General Public License (GPL) Version 2, available from the file |
| 11 | * COPYING in the main directory of this source tree, or the |
| 12 | * OpenIB.org BSD license below: |
| 13 | * |
| 14 | * Redistribution and use in source and binary forms, with or |
| 15 | * without modification, are permitted provided that the following |
| 16 | * conditions are met: |
| 17 | * |
| 18 | * - Redistributions of source code must retain the above |
| 19 | * copyright notice, this list of conditions and the following |
| 20 | * disclaimer. |
| 21 | * |
| 22 | * - Redistributions in binary form must reproduce the above |
| 23 | * copyright notice, this list of conditions and the following |
| 24 | * disclaimer in the documentation and/or other materials |
| 25 | * provided with the distribution. |
| 26 | * |
| 27 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 28 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 29 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 30 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 31 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 32 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 33 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 34 | * SOFTWARE. |
| 35 | * |
| 36 | * $Id: mthca_cq.c 1369 2004-12-20 16:17:07Z roland $ |
| 37 | */ |
| 38 | |
| 39 | #include <linux/init.h> |
| 40 | #include <linux/hardirq.h> |
| 41 | |
| 42 | #include <ib_pack.h> |
| 43 | |
| 44 | #include "mthca_dev.h" |
| 45 | #include "mthca_cmd.h" |
| 46 | #include "mthca_memfree.h" |
| 47 | |
| 48 | enum { |
| 49 | MTHCA_MAX_DIRECT_CQ_SIZE = 4 * PAGE_SIZE |
| 50 | }; |
| 51 | |
| 52 | enum { |
| 53 | MTHCA_CQ_ENTRY_SIZE = 0x20 |
| 54 | }; |
| 55 | |
| 56 | /* |
| 57 | * Must be packed because start is 64 bits but only aligned to 32 bits. |
| 58 | */ |
| 59 | struct mthca_cq_context { |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 60 | __be32 flags; |
| 61 | __be64 start; |
| 62 | __be32 logsize_usrpage; |
| 63 | __be32 error_eqn; /* Tavor only */ |
| 64 | __be32 comp_eqn; |
| 65 | __be32 pd; |
| 66 | __be32 lkey; |
| 67 | __be32 last_notified_index; |
| 68 | __be32 solicit_producer_index; |
| 69 | __be32 consumer_index; |
| 70 | __be32 producer_index; |
| 71 | __be32 cqn; |
| 72 | __be32 ci_db; /* Arbel only */ |
| 73 | __be32 state_db; /* Arbel only */ |
| 74 | u32 reserved; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | } __attribute__((packed)); |
| 76 | |
| 77 | #define MTHCA_CQ_STATUS_OK ( 0 << 28) |
| 78 | #define MTHCA_CQ_STATUS_OVERFLOW ( 9 << 28) |
| 79 | #define MTHCA_CQ_STATUS_WRITE_FAIL (10 << 28) |
| 80 | #define MTHCA_CQ_FLAG_TR ( 1 << 18) |
| 81 | #define MTHCA_CQ_FLAG_OI ( 1 << 17) |
| 82 | #define MTHCA_CQ_STATE_DISARMED ( 0 << 8) |
| 83 | #define MTHCA_CQ_STATE_ARMED ( 1 << 8) |
| 84 | #define MTHCA_CQ_STATE_ARMED_SOL ( 4 << 8) |
| 85 | #define MTHCA_EQ_STATE_FIRED (10 << 8) |
| 86 | |
| 87 | enum { |
| 88 | MTHCA_ERROR_CQE_OPCODE_MASK = 0xfe |
| 89 | }; |
| 90 | |
| 91 | enum { |
| 92 | SYNDROME_LOCAL_LENGTH_ERR = 0x01, |
| 93 | SYNDROME_LOCAL_QP_OP_ERR = 0x02, |
| 94 | SYNDROME_LOCAL_EEC_OP_ERR = 0x03, |
| 95 | SYNDROME_LOCAL_PROT_ERR = 0x04, |
| 96 | SYNDROME_WR_FLUSH_ERR = 0x05, |
| 97 | SYNDROME_MW_BIND_ERR = 0x06, |
| 98 | SYNDROME_BAD_RESP_ERR = 0x10, |
| 99 | SYNDROME_LOCAL_ACCESS_ERR = 0x11, |
| 100 | SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12, |
| 101 | SYNDROME_REMOTE_ACCESS_ERR = 0x13, |
| 102 | SYNDROME_REMOTE_OP_ERR = 0x14, |
| 103 | SYNDROME_RETRY_EXC_ERR = 0x15, |
| 104 | SYNDROME_RNR_RETRY_EXC_ERR = 0x16, |
| 105 | SYNDROME_LOCAL_RDD_VIOL_ERR = 0x20, |
| 106 | SYNDROME_REMOTE_INVAL_RD_REQ_ERR = 0x21, |
| 107 | SYNDROME_REMOTE_ABORTED_ERR = 0x22, |
| 108 | SYNDROME_INVAL_EECN_ERR = 0x23, |
| 109 | SYNDROME_INVAL_EEC_STATE_ERR = 0x24 |
| 110 | }; |
| 111 | |
| 112 | struct mthca_cqe { |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 113 | __be32 my_qpn; |
| 114 | __be32 my_ee; |
| 115 | __be32 rqpn; |
| 116 | __be16 sl_g_mlpath; |
| 117 | __be16 rlid; |
| 118 | __be32 imm_etype_pkey_eec; |
| 119 | __be32 byte_cnt; |
| 120 | __be32 wqe; |
| 121 | u8 opcode; |
| 122 | u8 is_send; |
| 123 | u8 reserved; |
| 124 | u8 owner; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | }; |
| 126 | |
| 127 | struct mthca_err_cqe { |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 128 | __be32 my_qpn; |
| 129 | u32 reserved1[3]; |
| 130 | u8 syndrome; |
| 131 | u8 reserved2; |
| 132 | __be16 db_cnt; |
| 133 | u32 reserved3; |
| 134 | __be32 wqe; |
| 135 | u8 opcode; |
| 136 | u8 reserved4[2]; |
| 137 | u8 owner; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | }; |
| 139 | |
| 140 | #define MTHCA_CQ_ENTRY_OWNER_SW (0 << 7) |
| 141 | #define MTHCA_CQ_ENTRY_OWNER_HW (1 << 7) |
| 142 | |
| 143 | #define MTHCA_TAVOR_CQ_DB_INC_CI (1 << 24) |
| 144 | #define MTHCA_TAVOR_CQ_DB_REQ_NOT (2 << 24) |
| 145 | #define MTHCA_TAVOR_CQ_DB_REQ_NOT_SOL (3 << 24) |
| 146 | #define MTHCA_TAVOR_CQ_DB_SET_CI (4 << 24) |
| 147 | #define MTHCA_TAVOR_CQ_DB_REQ_NOT_MULT (5 << 24) |
| 148 | |
| 149 | #define MTHCA_ARBEL_CQ_DB_REQ_NOT_SOL (1 << 24) |
| 150 | #define MTHCA_ARBEL_CQ_DB_REQ_NOT (2 << 24) |
| 151 | #define MTHCA_ARBEL_CQ_DB_REQ_NOT_MULT (3 << 24) |
| 152 | |
| 153 | static inline struct mthca_cqe *get_cqe(struct mthca_cq *cq, int entry) |
| 154 | { |
| 155 | if (cq->is_direct) |
| 156 | return cq->queue.direct.buf + (entry * MTHCA_CQ_ENTRY_SIZE); |
| 157 | else |
| 158 | return cq->queue.page_list[entry * MTHCA_CQ_ENTRY_SIZE / PAGE_SIZE].buf |
| 159 | + (entry * MTHCA_CQ_ENTRY_SIZE) % PAGE_SIZE; |
| 160 | } |
| 161 | |
| 162 | static inline struct mthca_cqe *cqe_sw(struct mthca_cq *cq, int i) |
| 163 | { |
| 164 | struct mthca_cqe *cqe = get_cqe(cq, i); |
| 165 | return MTHCA_CQ_ENTRY_OWNER_HW & cqe->owner ? NULL : cqe; |
| 166 | } |
| 167 | |
| 168 | static inline struct mthca_cqe *next_cqe_sw(struct mthca_cq *cq) |
| 169 | { |
| 170 | return cqe_sw(cq, cq->cons_index & cq->ibcq.cqe); |
| 171 | } |
| 172 | |
| 173 | static inline void set_cqe_hw(struct mthca_cqe *cqe) |
| 174 | { |
| 175 | cqe->owner = MTHCA_CQ_ENTRY_OWNER_HW; |
| 176 | } |
| 177 | |
Roland Dreier | bb2af78 | 2005-06-27 14:36:39 -0700 | [diff] [blame] | 178 | static void dump_cqe(struct mthca_dev *dev, void *cqe_ptr) |
| 179 | { |
| 180 | __be32 *cqe = cqe_ptr; |
| 181 | |
| 182 | (void) cqe; /* avoid warning if mthca_dbg compiled away... */ |
| 183 | mthca_dbg(dev, "CQE contents %08x %08x %08x %08x %08x %08x %08x %08x\n", |
| 184 | be32_to_cpu(cqe[0]), be32_to_cpu(cqe[1]), be32_to_cpu(cqe[2]), |
| 185 | be32_to_cpu(cqe[3]), be32_to_cpu(cqe[4]), be32_to_cpu(cqe[5]), |
| 186 | be32_to_cpu(cqe[6]), be32_to_cpu(cqe[7])); |
| 187 | } |
| 188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | /* |
| 190 | * incr is ignored in native Arbel (mem-free) mode, so cq->cons_index |
| 191 | * should be correct before calling update_cons_index(). |
| 192 | */ |
| 193 | static inline void update_cons_index(struct mthca_dev *dev, struct mthca_cq *cq, |
| 194 | int incr) |
| 195 | { |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 196 | __be32 doorbell[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
Roland Dreier | d10ddbf | 2005-04-16 15:26:32 -0700 | [diff] [blame] | 198 | if (mthca_is_memfree(dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | *cq->set_ci_db = cpu_to_be32(cq->cons_index); |
| 200 | wmb(); |
| 201 | } else { |
| 202 | doorbell[0] = cpu_to_be32(MTHCA_TAVOR_CQ_DB_INC_CI | cq->cqn); |
| 203 | doorbell[1] = cpu_to_be32(incr - 1); |
| 204 | |
| 205 | mthca_write64(doorbell, |
| 206 | dev->kar + MTHCA_CQ_DOORBELL, |
| 207 | MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock)); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | void mthca_cq_event(struct mthca_dev *dev, u32 cqn) |
| 212 | { |
| 213 | struct mthca_cq *cq; |
| 214 | |
| 215 | cq = mthca_array_get(&dev->cq_table.cq, cqn & (dev->limits.num_cqs - 1)); |
| 216 | |
| 217 | if (!cq) { |
| 218 | mthca_warn(dev, "Completion event for bogus CQ %08x\n", cqn); |
| 219 | return; |
| 220 | } |
| 221 | |
| 222 | ++cq->arm_sn; |
| 223 | |
| 224 | cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); |
| 225 | } |
| 226 | |
| 227 | void mthca_cq_clean(struct mthca_dev *dev, u32 cqn, u32 qpn) |
| 228 | { |
| 229 | struct mthca_cq *cq; |
| 230 | struct mthca_cqe *cqe; |
| 231 | int prod_index; |
| 232 | int nfreed = 0; |
| 233 | |
| 234 | spin_lock_irq(&dev->cq_table.lock); |
| 235 | cq = mthca_array_get(&dev->cq_table.cq, cqn & (dev->limits.num_cqs - 1)); |
| 236 | if (cq) |
| 237 | atomic_inc(&cq->refcount); |
| 238 | spin_unlock_irq(&dev->cq_table.lock); |
| 239 | |
| 240 | if (!cq) |
| 241 | return; |
| 242 | |
| 243 | spin_lock_irq(&cq->lock); |
| 244 | |
| 245 | /* |
| 246 | * First we need to find the current producer index, so we |
| 247 | * know where to start cleaning from. It doesn't matter if HW |
| 248 | * adds new entries after this loop -- the QP we're worried |
| 249 | * about is already in RESET, so the new entries won't come |
| 250 | * from our QP and therefore don't need to be checked. |
| 251 | */ |
| 252 | for (prod_index = cq->cons_index; |
| 253 | cqe_sw(cq, prod_index & cq->ibcq.cqe); |
| 254 | ++prod_index) |
| 255 | if (prod_index == cq->cons_index + cq->ibcq.cqe) |
| 256 | break; |
| 257 | |
| 258 | if (0) |
| 259 | mthca_dbg(dev, "Cleaning QPN %06x from CQN %06x; ci %d, pi %d\n", |
| 260 | qpn, cqn, cq->cons_index, prod_index); |
| 261 | |
| 262 | /* |
| 263 | * Now sweep backwards through the CQ, removing CQ entries |
| 264 | * that match our QP by copying older entries on top of them. |
| 265 | */ |
| 266 | while (prod_index > cq->cons_index) { |
| 267 | cqe = get_cqe(cq, (prod_index - 1) & cq->ibcq.cqe); |
| 268 | if (cqe->my_qpn == cpu_to_be32(qpn)) |
| 269 | ++nfreed; |
| 270 | else if (nfreed) |
| 271 | memcpy(get_cqe(cq, (prod_index - 1 + nfreed) & |
| 272 | cq->ibcq.cqe), |
| 273 | cqe, |
| 274 | MTHCA_CQ_ENTRY_SIZE); |
| 275 | --prod_index; |
| 276 | } |
| 277 | |
| 278 | if (nfreed) { |
| 279 | wmb(); |
| 280 | cq->cons_index += nfreed; |
| 281 | update_cons_index(dev, cq, nfreed); |
| 282 | } |
| 283 | |
| 284 | spin_unlock_irq(&cq->lock); |
| 285 | if (atomic_dec_and_test(&cq->refcount)) |
| 286 | wake_up(&cq->wait); |
| 287 | } |
| 288 | |
| 289 | static int handle_error_cqe(struct mthca_dev *dev, struct mthca_cq *cq, |
| 290 | struct mthca_qp *qp, int wqe_index, int is_send, |
| 291 | struct mthca_err_cqe *cqe, |
| 292 | struct ib_wc *entry, int *free_cqe) |
| 293 | { |
| 294 | int err; |
| 295 | int dbd; |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 296 | __be32 new_wqe; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | |
Roland Dreier | bb2af78 | 2005-06-27 14:36:39 -0700 | [diff] [blame] | 298 | if (cqe->syndrome == SYNDROME_LOCAL_QP_OP_ERR) { |
| 299 | mthca_dbg(dev, "local QP operation err " |
| 300 | "(QPN %06x, WQE @ %08x, CQN %06x, index %d)\n", |
| 301 | be32_to_cpu(cqe->my_qpn), be32_to_cpu(cqe->wqe), |
| 302 | cq->cqn, cq->cons_index); |
| 303 | dump_cqe(dev, cqe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | } |
| 305 | |
| 306 | /* |
| 307 | * For completions in error, only work request ID, status (and |
| 308 | * freed resource count for RD) have to be set. |
| 309 | */ |
| 310 | switch (cqe->syndrome) { |
| 311 | case SYNDROME_LOCAL_LENGTH_ERR: |
| 312 | entry->status = IB_WC_LOC_LEN_ERR; |
| 313 | break; |
| 314 | case SYNDROME_LOCAL_QP_OP_ERR: |
| 315 | entry->status = IB_WC_LOC_QP_OP_ERR; |
| 316 | break; |
| 317 | case SYNDROME_LOCAL_EEC_OP_ERR: |
| 318 | entry->status = IB_WC_LOC_EEC_OP_ERR; |
| 319 | break; |
| 320 | case SYNDROME_LOCAL_PROT_ERR: |
| 321 | entry->status = IB_WC_LOC_PROT_ERR; |
| 322 | break; |
| 323 | case SYNDROME_WR_FLUSH_ERR: |
| 324 | entry->status = IB_WC_WR_FLUSH_ERR; |
| 325 | break; |
| 326 | case SYNDROME_MW_BIND_ERR: |
| 327 | entry->status = IB_WC_MW_BIND_ERR; |
| 328 | break; |
| 329 | case SYNDROME_BAD_RESP_ERR: |
| 330 | entry->status = IB_WC_BAD_RESP_ERR; |
| 331 | break; |
| 332 | case SYNDROME_LOCAL_ACCESS_ERR: |
| 333 | entry->status = IB_WC_LOC_ACCESS_ERR; |
| 334 | break; |
| 335 | case SYNDROME_REMOTE_INVAL_REQ_ERR: |
| 336 | entry->status = IB_WC_REM_INV_REQ_ERR; |
| 337 | break; |
| 338 | case SYNDROME_REMOTE_ACCESS_ERR: |
| 339 | entry->status = IB_WC_REM_ACCESS_ERR; |
| 340 | break; |
| 341 | case SYNDROME_REMOTE_OP_ERR: |
| 342 | entry->status = IB_WC_REM_OP_ERR; |
| 343 | break; |
| 344 | case SYNDROME_RETRY_EXC_ERR: |
| 345 | entry->status = IB_WC_RETRY_EXC_ERR; |
| 346 | break; |
| 347 | case SYNDROME_RNR_RETRY_EXC_ERR: |
| 348 | entry->status = IB_WC_RNR_RETRY_EXC_ERR; |
| 349 | break; |
| 350 | case SYNDROME_LOCAL_RDD_VIOL_ERR: |
| 351 | entry->status = IB_WC_LOC_RDD_VIOL_ERR; |
| 352 | break; |
| 353 | case SYNDROME_REMOTE_INVAL_RD_REQ_ERR: |
| 354 | entry->status = IB_WC_REM_INV_RD_REQ_ERR; |
| 355 | break; |
| 356 | case SYNDROME_REMOTE_ABORTED_ERR: |
| 357 | entry->status = IB_WC_REM_ABORT_ERR; |
| 358 | break; |
| 359 | case SYNDROME_INVAL_EECN_ERR: |
| 360 | entry->status = IB_WC_INV_EECN_ERR; |
| 361 | break; |
| 362 | case SYNDROME_INVAL_EEC_STATE_ERR: |
| 363 | entry->status = IB_WC_INV_EEC_STATE_ERR; |
| 364 | break; |
| 365 | default: |
| 366 | entry->status = IB_WC_GENERAL_ERR; |
| 367 | break; |
| 368 | } |
| 369 | |
Roland Dreier | 288bdeb | 2005-08-19 09:19:05 -0700 | [diff] [blame^] | 370 | /* |
| 371 | * Mem-free HCAs always generate one CQE per WQE, even in the |
| 372 | * error case, so we don't have to check the doorbell count, etc. |
| 373 | */ |
| 374 | if (mthca_is_memfree(dev)) |
| 375 | return 0; |
| 376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | err = mthca_free_err_wqe(dev, qp, is_send, wqe_index, &dbd, &new_wqe); |
| 378 | if (err) |
| 379 | return err; |
| 380 | |
| 381 | /* |
| 382 | * If we're at the end of the WQE chain, or we've used up our |
| 383 | * doorbell count, free the CQE. Otherwise just update it for |
| 384 | * the next poll operation. |
| 385 | */ |
Roland Dreier | 288bdeb | 2005-08-19 09:19:05 -0700 | [diff] [blame^] | 386 | if (!(new_wqe & cpu_to_be32(0x3f)) || (!cqe->db_cnt && dbd)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | return 0; |
| 388 | |
| 389 | cqe->db_cnt = cpu_to_be16(be16_to_cpu(cqe->db_cnt) - dbd); |
| 390 | cqe->wqe = new_wqe; |
| 391 | cqe->syndrome = SYNDROME_WR_FLUSH_ERR; |
| 392 | |
| 393 | *free_cqe = 0; |
| 394 | |
| 395 | return 0; |
| 396 | } |
| 397 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | static inline int mthca_poll_one(struct mthca_dev *dev, |
| 399 | struct mthca_cq *cq, |
| 400 | struct mthca_qp **cur_qp, |
| 401 | int *freed, |
| 402 | struct ib_wc *entry) |
| 403 | { |
| 404 | struct mthca_wq *wq; |
| 405 | struct mthca_cqe *cqe; |
| 406 | int wqe_index; |
| 407 | int is_error; |
| 408 | int is_send; |
| 409 | int free_cqe = 1; |
| 410 | int err = 0; |
| 411 | |
| 412 | cqe = next_cqe_sw(cq); |
| 413 | if (!cqe) |
| 414 | return -EAGAIN; |
| 415 | |
| 416 | /* |
| 417 | * Make sure we read CQ entry contents after we've checked the |
| 418 | * ownership bit. |
| 419 | */ |
| 420 | rmb(); |
| 421 | |
| 422 | if (0) { |
| 423 | mthca_dbg(dev, "%x/%d: CQE -> QPN %06x, WQE @ %08x\n", |
| 424 | cq->cqn, cq->cons_index, be32_to_cpu(cqe->my_qpn), |
| 425 | be32_to_cpu(cqe->wqe)); |
Roland Dreier | bb2af78 | 2005-06-27 14:36:39 -0700 | [diff] [blame] | 426 | dump_cqe(dev, cqe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | } |
| 428 | |
| 429 | is_error = (cqe->opcode & MTHCA_ERROR_CQE_OPCODE_MASK) == |
| 430 | MTHCA_ERROR_CQE_OPCODE_MASK; |
| 431 | is_send = is_error ? cqe->opcode & 0x01 : cqe->is_send & 0x80; |
| 432 | |
| 433 | if (!*cur_qp || be32_to_cpu(cqe->my_qpn) != (*cur_qp)->qpn) { |
| 434 | /* |
| 435 | * We do not have to take the QP table lock here, |
| 436 | * because CQs will be locked while QPs are removed |
| 437 | * from the table. |
| 438 | */ |
| 439 | *cur_qp = mthca_array_get(&dev->qp_table.qp, |
| 440 | be32_to_cpu(cqe->my_qpn) & |
| 441 | (dev->limits.num_qps - 1)); |
| 442 | if (!*cur_qp) { |
| 443 | mthca_warn(dev, "CQ entry for unknown QP %06x\n", |
| 444 | be32_to_cpu(cqe->my_qpn) & 0xffffff); |
| 445 | err = -EINVAL; |
| 446 | goto out; |
| 447 | } |
| 448 | } |
| 449 | |
| 450 | entry->qp_num = (*cur_qp)->qpn; |
| 451 | |
| 452 | if (is_send) { |
| 453 | wq = &(*cur_qp)->sq; |
| 454 | wqe_index = ((be32_to_cpu(cqe->wqe) - (*cur_qp)->send_wqe_offset) |
| 455 | >> wq->wqe_shift); |
| 456 | entry->wr_id = (*cur_qp)->wrid[wqe_index + |
| 457 | (*cur_qp)->rq.max]; |
| 458 | } else { |
| 459 | wq = &(*cur_qp)->rq; |
| 460 | wqe_index = be32_to_cpu(cqe->wqe) >> wq->wqe_shift; |
| 461 | entry->wr_id = (*cur_qp)->wrid[wqe_index]; |
| 462 | } |
| 463 | |
| 464 | if (wq->last_comp < wqe_index) |
| 465 | wq->tail += wqe_index - wq->last_comp; |
| 466 | else |
| 467 | wq->tail += wqe_index + wq->max - wq->last_comp; |
| 468 | |
| 469 | wq->last_comp = wqe_index; |
| 470 | |
| 471 | if (0) |
| 472 | mthca_dbg(dev, "%s completion for QP %06x, index %d (nr %d)\n", |
| 473 | is_send ? "Send" : "Receive", |
| 474 | (*cur_qp)->qpn, wqe_index, wq->max); |
| 475 | |
| 476 | if (is_error) { |
| 477 | err = handle_error_cqe(dev, cq, *cur_qp, wqe_index, is_send, |
| 478 | (struct mthca_err_cqe *) cqe, |
| 479 | entry, &free_cqe); |
| 480 | goto out; |
| 481 | } |
| 482 | |
| 483 | if (is_send) { |
Michael S. Tsirkin | 2a4443a | 2005-04-16 15:26:25 -0700 | [diff] [blame] | 484 | entry->wc_flags = 0; |
| 485 | switch (cqe->opcode) { |
| 486 | case MTHCA_OPCODE_RDMA_WRITE: |
| 487 | entry->opcode = IB_WC_RDMA_WRITE; |
| 488 | break; |
| 489 | case MTHCA_OPCODE_RDMA_WRITE_IMM: |
| 490 | entry->opcode = IB_WC_RDMA_WRITE; |
| 491 | entry->wc_flags |= IB_WC_WITH_IMM; |
| 492 | break; |
| 493 | case MTHCA_OPCODE_SEND: |
| 494 | entry->opcode = IB_WC_SEND; |
| 495 | break; |
| 496 | case MTHCA_OPCODE_SEND_IMM: |
| 497 | entry->opcode = IB_WC_SEND; |
| 498 | entry->wc_flags |= IB_WC_WITH_IMM; |
| 499 | break; |
| 500 | case MTHCA_OPCODE_RDMA_READ: |
| 501 | entry->opcode = IB_WC_RDMA_READ; |
| 502 | entry->byte_len = be32_to_cpu(cqe->byte_cnt); |
| 503 | break; |
| 504 | case MTHCA_OPCODE_ATOMIC_CS: |
| 505 | entry->opcode = IB_WC_COMP_SWAP; |
| 506 | entry->byte_len = be32_to_cpu(cqe->byte_cnt); |
| 507 | break; |
| 508 | case MTHCA_OPCODE_ATOMIC_FA: |
| 509 | entry->opcode = IB_WC_FETCH_ADD; |
| 510 | entry->byte_len = be32_to_cpu(cqe->byte_cnt); |
| 511 | break; |
| 512 | case MTHCA_OPCODE_BIND_MW: |
| 513 | entry->opcode = IB_WC_BIND_MW; |
| 514 | break; |
| 515 | default: |
| 516 | entry->opcode = MTHCA_OPCODE_INVALID; |
| 517 | break; |
| 518 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | } else { |
| 520 | entry->byte_len = be32_to_cpu(cqe->byte_cnt); |
| 521 | switch (cqe->opcode & 0x1f) { |
| 522 | case IB_OPCODE_SEND_LAST_WITH_IMMEDIATE: |
| 523 | case IB_OPCODE_SEND_ONLY_WITH_IMMEDIATE: |
| 524 | entry->wc_flags = IB_WC_WITH_IMM; |
| 525 | entry->imm_data = cqe->imm_etype_pkey_eec; |
| 526 | entry->opcode = IB_WC_RECV; |
| 527 | break; |
| 528 | case IB_OPCODE_RDMA_WRITE_LAST_WITH_IMMEDIATE: |
| 529 | case IB_OPCODE_RDMA_WRITE_ONLY_WITH_IMMEDIATE: |
| 530 | entry->wc_flags = IB_WC_WITH_IMM; |
| 531 | entry->imm_data = cqe->imm_etype_pkey_eec; |
| 532 | entry->opcode = IB_WC_RECV_RDMA_WITH_IMM; |
| 533 | break; |
| 534 | default: |
| 535 | entry->wc_flags = 0; |
| 536 | entry->opcode = IB_WC_RECV; |
| 537 | break; |
| 538 | } |
| 539 | entry->slid = be16_to_cpu(cqe->rlid); |
| 540 | entry->sl = be16_to_cpu(cqe->sl_g_mlpath) >> 12; |
| 541 | entry->src_qp = be32_to_cpu(cqe->rqpn) & 0xffffff; |
| 542 | entry->dlid_path_bits = be16_to_cpu(cqe->sl_g_mlpath) & 0x7f; |
| 543 | entry->pkey_index = be32_to_cpu(cqe->imm_etype_pkey_eec) >> 16; |
| 544 | entry->wc_flags |= be16_to_cpu(cqe->sl_g_mlpath) & 0x80 ? |
| 545 | IB_WC_GRH : 0; |
| 546 | } |
| 547 | |
| 548 | entry->status = IB_WC_SUCCESS; |
| 549 | |
| 550 | out: |
| 551 | if (likely(free_cqe)) { |
| 552 | set_cqe_hw(cqe); |
| 553 | ++(*freed); |
| 554 | ++cq->cons_index; |
| 555 | } |
| 556 | |
| 557 | return err; |
| 558 | } |
| 559 | |
| 560 | int mthca_poll_cq(struct ib_cq *ibcq, int num_entries, |
| 561 | struct ib_wc *entry) |
| 562 | { |
| 563 | struct mthca_dev *dev = to_mdev(ibcq->device); |
| 564 | struct mthca_cq *cq = to_mcq(ibcq); |
| 565 | struct mthca_qp *qp = NULL; |
| 566 | unsigned long flags; |
| 567 | int err = 0; |
| 568 | int freed = 0; |
| 569 | int npolled; |
| 570 | |
| 571 | spin_lock_irqsave(&cq->lock, flags); |
| 572 | |
| 573 | for (npolled = 0; npolled < num_entries; ++npolled) { |
| 574 | err = mthca_poll_one(dev, cq, &qp, |
| 575 | &freed, entry + npolled); |
| 576 | if (err) |
| 577 | break; |
| 578 | } |
| 579 | |
| 580 | if (freed) { |
| 581 | wmb(); |
| 582 | update_cons_index(dev, cq, freed); |
| 583 | } |
| 584 | |
| 585 | spin_unlock_irqrestore(&cq->lock, flags); |
| 586 | |
| 587 | return err == 0 || err == -EAGAIN ? npolled : err; |
| 588 | } |
| 589 | |
| 590 | int mthca_tavor_arm_cq(struct ib_cq *cq, enum ib_cq_notify notify) |
| 591 | { |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 592 | __be32 doorbell[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | |
| 594 | doorbell[0] = cpu_to_be32((notify == IB_CQ_SOLICITED ? |
| 595 | MTHCA_TAVOR_CQ_DB_REQ_NOT_SOL : |
| 596 | MTHCA_TAVOR_CQ_DB_REQ_NOT) | |
| 597 | to_mcq(cq)->cqn); |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 598 | doorbell[1] = (__force __be32) 0xffffffff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | |
| 600 | mthca_write64(doorbell, |
| 601 | to_mdev(cq->device)->kar + MTHCA_CQ_DOORBELL, |
| 602 | MTHCA_GET_DOORBELL_LOCK(&to_mdev(cq->device)->doorbell_lock)); |
| 603 | |
| 604 | return 0; |
| 605 | } |
| 606 | |
| 607 | int mthca_arbel_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify notify) |
| 608 | { |
| 609 | struct mthca_cq *cq = to_mcq(ibcq); |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 610 | __be32 doorbell[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | u32 sn; |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 612 | __be32 ci; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | |
| 614 | sn = cq->arm_sn & 3; |
| 615 | ci = cpu_to_be32(cq->cons_index); |
| 616 | |
| 617 | doorbell[0] = ci; |
| 618 | doorbell[1] = cpu_to_be32((cq->cqn << 8) | (2 << 5) | (sn << 3) | |
| 619 | (notify == IB_CQ_SOLICITED ? 1 : 2)); |
| 620 | |
| 621 | mthca_write_db_rec(doorbell, cq->arm_db); |
| 622 | |
| 623 | /* |
| 624 | * Make sure that the doorbell record in host memory is |
| 625 | * written before ringing the doorbell via PCI MMIO. |
| 626 | */ |
| 627 | wmb(); |
| 628 | |
| 629 | doorbell[0] = cpu_to_be32((sn << 28) | |
| 630 | (notify == IB_CQ_SOLICITED ? |
| 631 | MTHCA_ARBEL_CQ_DB_REQ_NOT_SOL : |
| 632 | MTHCA_ARBEL_CQ_DB_REQ_NOT) | |
| 633 | cq->cqn); |
| 634 | doorbell[1] = ci; |
| 635 | |
| 636 | mthca_write64(doorbell, |
| 637 | to_mdev(ibcq->device)->kar + MTHCA_CQ_DOORBELL, |
| 638 | MTHCA_GET_DOORBELL_LOCK(&to_mdev(ibcq->device)->doorbell_lock)); |
| 639 | |
| 640 | return 0; |
| 641 | } |
| 642 | |
| 643 | static void mthca_free_cq_buf(struct mthca_dev *dev, struct mthca_cq *cq) |
| 644 | { |
Roland Dreier | 87b8167 | 2005-08-18 13:39:31 -0700 | [diff] [blame] | 645 | mthca_buf_free(dev, (cq->ibcq.cqe + 1) * MTHCA_CQ_ENTRY_SIZE, |
| 646 | &cq->queue, cq->is_direct, &cq->mr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | } |
| 648 | |
| 649 | int mthca_init_cq(struct mthca_dev *dev, int nent, |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 650 | struct mthca_ucontext *ctx, u32 pdn, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | struct mthca_cq *cq) |
| 652 | { |
| 653 | int size = nent * MTHCA_CQ_ENTRY_SIZE; |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 654 | struct mthca_mailbox *mailbox; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | struct mthca_cq_context *cq_context; |
| 656 | int err = -ENOMEM; |
| 657 | u8 status; |
| 658 | int i; |
| 659 | |
| 660 | might_sleep(); |
| 661 | |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 662 | cq->ibcq.cqe = nent - 1; |
| 663 | cq->is_kernel = !ctx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | |
| 665 | cq->cqn = mthca_alloc(&dev->cq_table.alloc); |
| 666 | if (cq->cqn == -1) |
| 667 | return -ENOMEM; |
| 668 | |
Roland Dreier | d10ddbf | 2005-04-16 15:26:32 -0700 | [diff] [blame] | 669 | if (mthca_is_memfree(dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | err = mthca_table_get(dev, dev->cq_table.table, cq->cqn); |
| 671 | if (err) |
| 672 | goto err_out; |
| 673 | |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 674 | if (cq->is_kernel) { |
| 675 | cq->arm_sn = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 677 | err = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 679 | cq->set_ci_db_index = mthca_alloc_db(dev, MTHCA_DB_TYPE_CQ_SET_CI, |
| 680 | cq->cqn, &cq->set_ci_db); |
| 681 | if (cq->set_ci_db_index < 0) |
| 682 | goto err_out_icm; |
| 683 | |
| 684 | cq->arm_db_index = mthca_alloc_db(dev, MTHCA_DB_TYPE_CQ_ARM, |
| 685 | cq->cqn, &cq->arm_db); |
| 686 | if (cq->arm_db_index < 0) |
| 687 | goto err_out_ci; |
| 688 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | } |
| 690 | |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 691 | mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL); |
| 692 | if (IS_ERR(mailbox)) |
| 693 | goto err_out_arm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 695 | cq_context = mailbox->buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 697 | if (cq->is_kernel) { |
Roland Dreier | 87b8167 | 2005-08-18 13:39:31 -0700 | [diff] [blame] | 698 | err = mthca_buf_alloc(dev, size, MTHCA_MAX_DIRECT_CQ_SIZE, |
| 699 | &cq->queue, &cq->is_direct, |
| 700 | &dev->driver_pd, 1, &cq->mr); |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 701 | if (err) |
| 702 | goto err_out_mailbox; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 704 | for (i = 0; i < nent; ++i) |
| 705 | set_cqe_hw(get_cqe(cq, i)); |
| 706 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | |
| 708 | spin_lock_init(&cq->lock); |
| 709 | atomic_set(&cq->refcount, 1); |
| 710 | init_waitqueue_head(&cq->wait); |
| 711 | |
| 712 | memset(cq_context, 0, sizeof *cq_context); |
| 713 | cq_context->flags = cpu_to_be32(MTHCA_CQ_STATUS_OK | |
| 714 | MTHCA_CQ_STATE_DISARMED | |
| 715 | MTHCA_CQ_FLAG_TR); |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 716 | cq_context->logsize_usrpage = cpu_to_be32((ffs(nent) - 1) << 24); |
| 717 | if (ctx) |
| 718 | cq_context->logsize_usrpage |= cpu_to_be32(ctx->uar.index); |
| 719 | else |
| 720 | cq_context->logsize_usrpage |= cpu_to_be32(dev->driver_uar.index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | cq_context->error_eqn = cpu_to_be32(dev->eq_table.eq[MTHCA_EQ_ASYNC].eqn); |
| 722 | cq_context->comp_eqn = cpu_to_be32(dev->eq_table.eq[MTHCA_EQ_COMP].eqn); |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 723 | cq_context->pd = cpu_to_be32(pdn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | cq_context->lkey = cpu_to_be32(cq->mr.ibmr.lkey); |
| 725 | cq_context->cqn = cpu_to_be32(cq->cqn); |
| 726 | |
Roland Dreier | d10ddbf | 2005-04-16 15:26:32 -0700 | [diff] [blame] | 727 | if (mthca_is_memfree(dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | cq_context->ci_db = cpu_to_be32(cq->set_ci_db_index); |
| 729 | cq_context->state_db = cpu_to_be32(cq->arm_db_index); |
| 730 | } |
| 731 | |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 732 | err = mthca_SW2HW_CQ(dev, mailbox, cq->cqn, &status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | if (err) { |
| 734 | mthca_warn(dev, "SW2HW_CQ failed (%d)\n", err); |
| 735 | goto err_out_free_mr; |
| 736 | } |
| 737 | |
| 738 | if (status) { |
| 739 | mthca_warn(dev, "SW2HW_CQ returned status 0x%02x\n", |
| 740 | status); |
| 741 | err = -EINVAL; |
| 742 | goto err_out_free_mr; |
| 743 | } |
| 744 | |
| 745 | spin_lock_irq(&dev->cq_table.lock); |
| 746 | if (mthca_array_set(&dev->cq_table.cq, |
| 747 | cq->cqn & (dev->limits.num_cqs - 1), |
| 748 | cq)) { |
| 749 | spin_unlock_irq(&dev->cq_table.lock); |
| 750 | goto err_out_free_mr; |
| 751 | } |
| 752 | spin_unlock_irq(&dev->cq_table.lock); |
| 753 | |
| 754 | cq->cons_index = 0; |
| 755 | |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 756 | mthca_free_mailbox(dev, mailbox); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | |
| 758 | return 0; |
| 759 | |
| 760 | err_out_free_mr: |
Roland Dreier | 87b8167 | 2005-08-18 13:39:31 -0700 | [diff] [blame] | 761 | if (cq->is_kernel) |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 762 | mthca_free_cq_buf(dev, cq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
| 764 | err_out_mailbox: |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 765 | mthca_free_mailbox(dev, mailbox); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 767 | err_out_arm: |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 768 | if (cq->is_kernel && mthca_is_memfree(dev)) |
Roland Dreier | b635fa2 | 2005-04-16 15:26:21 -0700 | [diff] [blame] | 769 | mthca_free_db(dev, MTHCA_DB_TYPE_CQ_ARM, cq->arm_db_index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | |
| 771 | err_out_ci: |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 772 | if (cq->is_kernel && mthca_is_memfree(dev)) |
Roland Dreier | b635fa2 | 2005-04-16 15:26:21 -0700 | [diff] [blame] | 773 | mthca_free_db(dev, MTHCA_DB_TYPE_CQ_SET_CI, cq->set_ci_db_index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | |
| 775 | err_out_icm: |
| 776 | mthca_table_put(dev, dev->cq_table.table, cq->cqn); |
| 777 | |
| 778 | err_out: |
| 779 | mthca_free(&dev->cq_table.alloc, cq->cqn); |
| 780 | |
| 781 | return err; |
| 782 | } |
| 783 | |
| 784 | void mthca_free_cq(struct mthca_dev *dev, |
| 785 | struct mthca_cq *cq) |
| 786 | { |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 787 | struct mthca_mailbox *mailbox; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | int err; |
| 789 | u8 status; |
| 790 | |
| 791 | might_sleep(); |
| 792 | |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 793 | mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL); |
| 794 | if (IS_ERR(mailbox)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | mthca_warn(dev, "No memory for mailbox to free CQ.\n"); |
| 796 | return; |
| 797 | } |
| 798 | |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 799 | err = mthca_HW2SW_CQ(dev, mailbox, cq->cqn, &status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | if (err) |
| 801 | mthca_warn(dev, "HW2SW_CQ failed (%d)\n", err); |
| 802 | else if (status) |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 803 | mthca_warn(dev, "HW2SW_CQ returned status 0x%02x\n", status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | |
| 805 | if (0) { |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 806 | __be32 *ctx = mailbox->buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | int j; |
| 808 | |
| 809 | printk(KERN_ERR "context for CQN %x (cons index %x, next sw %d)\n", |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 810 | cq->cqn, cq->cons_index, |
| 811 | cq->is_kernel ? !!next_cqe_sw(cq) : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | for (j = 0; j < 16; ++j) |
| 813 | printk(KERN_ERR "[%2x] %08x\n", j * 4, be32_to_cpu(ctx[j])); |
| 814 | } |
| 815 | |
| 816 | spin_lock_irq(&dev->cq_table.lock); |
| 817 | mthca_array_clear(&dev->cq_table.cq, |
| 818 | cq->cqn & (dev->limits.num_cqs - 1)); |
| 819 | spin_unlock_irq(&dev->cq_table.lock); |
| 820 | |
| 821 | if (dev->mthca_flags & MTHCA_FLAG_MSI_X) |
| 822 | synchronize_irq(dev->eq_table.eq[MTHCA_EQ_COMP].msi_x_vector); |
| 823 | else |
| 824 | synchronize_irq(dev->pdev->irq); |
| 825 | |
| 826 | atomic_dec(&cq->refcount); |
| 827 | wait_event(cq->wait, !atomic_read(&cq->refcount)); |
| 828 | |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 829 | if (cq->is_kernel) { |
Roland Dreier | 74c2174 | 2005-07-07 17:57:19 -0700 | [diff] [blame] | 830 | mthca_free_cq_buf(dev, cq); |
| 831 | if (mthca_is_memfree(dev)) { |
| 832 | mthca_free_db(dev, MTHCA_DB_TYPE_CQ_ARM, cq->arm_db_index); |
| 833 | mthca_free_db(dev, MTHCA_DB_TYPE_CQ_SET_CI, cq->set_ci_db_index); |
| 834 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | } |
| 836 | |
Roland Dreier | a03a5a6 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 837 | mthca_table_put(dev, dev->cq_table.table, cq->cqn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | mthca_free(&dev->cq_table.alloc, cq->cqn); |
Roland Dreier | ed87845 | 2005-06-27 14:36:45 -0700 | [diff] [blame] | 839 | mthca_free_mailbox(dev, mailbox); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | } |
| 841 | |
| 842 | int __devinit mthca_init_cq_table(struct mthca_dev *dev) |
| 843 | { |
| 844 | int err; |
| 845 | |
| 846 | spin_lock_init(&dev->cq_table.lock); |
| 847 | |
| 848 | err = mthca_alloc_init(&dev->cq_table.alloc, |
| 849 | dev->limits.num_cqs, |
| 850 | (1 << 24) - 1, |
| 851 | dev->limits.reserved_cqs); |
| 852 | if (err) |
| 853 | return err; |
| 854 | |
| 855 | err = mthca_array_init(&dev->cq_table.cq, |
| 856 | dev->limits.num_cqs); |
| 857 | if (err) |
| 858 | mthca_alloc_cleanup(&dev->cq_table.alloc); |
| 859 | |
| 860 | return err; |
| 861 | } |
| 862 | |
| 863 | void __devexit mthca_cleanup_cq_table(struct mthca_dev *dev) |
| 864 | { |
| 865 | mthca_array_cleanup(&dev->cq_table.cq, dev->limits.num_cqs); |
| 866 | mthca_alloc_cleanup(&dev->cq_table.alloc); |
| 867 | } |