1 /* 2 * Copyright (c) 2004, 2005 Topspin Communications. 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 * $Id: mthca_main.c 1396 2004-12-28 04:10:27Z roland $ 33 */ 34 35 #include <linux/config.h> 36 #include <linux/version.h> 37 #include <linux/module.h> 38 #include <linux/init.h> 39 #include <linux/errno.h> 40 #include <linux/pci.h> 41 #include <linux/interrupt.h> 42 43 #include "mthca_dev.h" 44 #include "mthca_config_reg.h" 45 #include "mthca_cmd.h" 46 #include "mthca_profile.h" 47 #include "mthca_memfree.h" 48 49 MODULE_AUTHOR("Roland Dreier"); 50 MODULE_DESCRIPTION("Mellanox InfiniBand HCA low-level driver"); 51 MODULE_LICENSE("Dual BSD/GPL"); 52 MODULE_VERSION(DRV_VERSION); 53 54 #ifdef CONFIG_PCI_MSI 55 56 static int msi_x = 0; 57 module_param(msi_x, int, 0444); 58 MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero"); 59 60 static int msi = 0; 61 module_param(msi, int, 0444); 62 MODULE_PARM_DESC(msi, "attempt to use MSI if nonzero"); 63 64 #else /* CONFIG_PCI_MSI */ 65 66 #define msi_x (0) 67 #define msi (0) 68 69 #endif /* CONFIG_PCI_MSI */ 70 71 static const char mthca_version[] __devinitdata = 72 "ib_mthca: Mellanox InfiniBand HCA driver v" 73 DRV_VERSION " (" DRV_RELDATE ")\n"; 74 75 static struct mthca_profile default_profile = { 76 .num_qp = 1 << 16, 77 .rdb_per_qp = 4, 78 .num_cq = 1 << 16, 79 .num_mcg = 1 << 13, 80 .num_mpt = 1 << 17, 81 .num_mtt = 1 << 20, 82 .num_udav = 1 << 15, /* Tavor only */ 83 .uarc_size = 1 << 18, /* Arbel only */ 84 }; 85 86 static int __devinit mthca_tune_pci(struct mthca_dev *mdev) 87 { 88 int cap; 89 u16 val; 90 91 /* First try to max out Read Byte Count */ 92 cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX); 93 if (cap) { 94 if (pci_read_config_word(mdev->pdev, cap + PCI_X_CMD, &val)) { 95 mthca_err(mdev, "Couldn't read PCI-X command register, " 96 "aborting.\n"); 97 return -ENODEV; 98 } 99 val = (val & ~PCI_X_CMD_MAX_READ) | (3 << 2); 100 if (pci_write_config_word(mdev->pdev, cap + PCI_X_CMD, val)) { 101 mthca_err(mdev, "Couldn't write PCI-X command register, " 102 "aborting.\n"); 103 return -ENODEV; 104 } 105 } else if (mdev->hca_type == TAVOR) 106 mthca_info(mdev, "No PCI-X capability, not setting RBC.\n"); 107 108 cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_EXP); 109 if (cap) { 110 if (pci_read_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, &val)) { 111 mthca_err(mdev, "Couldn't read PCI Express device control " 112 "register, aborting.\n"); 113 return -ENODEV; 114 } 115 val = (val & ~PCI_EXP_DEVCTL_READRQ) | (5 << 12); 116 if (pci_write_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, val)) { 117 mthca_err(mdev, "Couldn't write PCI Express device control " 118 "register, aborting.\n"); 119 return -ENODEV; 120 } 121 } else if (mdev->hca_type == ARBEL_NATIVE || 122 mdev->hca_type == ARBEL_COMPAT) 123 mthca_info(mdev, "No PCI Express capability, " 124 "not setting Max Read Request Size.\n"); 125 126 return 0; 127 } 128 129 static int __devinit mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim *dev_lim) 130 { 131 int err; 132 u8 status; 133 134 err = mthca_QUERY_DEV_LIM(mdev, dev_lim, &status); 135 if (err) { 136 mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n"); 137 return err; 138 } 139 if (status) { 140 mthca_err(mdev, "QUERY_DEV_LIM returned status 0x%02x, " 141 "aborting.\n", status); 142 return -EINVAL; 143 } 144 if (dev_lim->min_page_sz > PAGE_SIZE) { 145 mthca_err(mdev, "HCA minimum page size of %d bigger than " 146 "kernel PAGE_SIZE of %ld, aborting.\n", 147 dev_lim->min_page_sz, PAGE_SIZE); 148 return -ENODEV; 149 } 150 if (dev_lim->num_ports > MTHCA_MAX_PORTS) { 151 mthca_err(mdev, "HCA has %d ports, but we only support %d, " 152 "aborting.\n", 153 dev_lim->num_ports, MTHCA_MAX_PORTS); 154 return -ENODEV; 155 } 156 157 mdev->limits.num_ports = dev_lim->num_ports; 158 mdev->limits.vl_cap = dev_lim->max_vl; 159 mdev->limits.mtu_cap = dev_lim->max_mtu; 160 mdev->limits.gid_table_len = dev_lim->max_gids; 161 mdev->limits.pkey_table_len = dev_lim->max_pkeys; 162 mdev->limits.local_ca_ack_delay = dev_lim->local_ca_ack_delay; 163 mdev->limits.max_sg = dev_lim->max_sg; 164 mdev->limits.reserved_qps = dev_lim->reserved_qps; 165 mdev->limits.reserved_srqs = dev_lim->reserved_srqs; 166 mdev->limits.reserved_eecs = dev_lim->reserved_eecs; 167 mdev->limits.reserved_cqs = dev_lim->reserved_cqs; 168 mdev->limits.reserved_eqs = dev_lim->reserved_eqs; 169 mdev->limits.reserved_mtts = dev_lim->reserved_mtts; 170 mdev->limits.reserved_mrws = dev_lim->reserved_mrws; 171 mdev->limits.reserved_uars = dev_lim->reserved_uars; 172 mdev->limits.reserved_pds = dev_lim->reserved_pds; 173 174 /* IB_DEVICE_RESIZE_MAX_WR not supported by driver. 175 May be doable since hardware supports it for SRQ. 176 177 IB_DEVICE_N_NOTIFY_CQ is supported by hardware but not by driver. 178 179 IB_DEVICE_SRQ_RESIZE is supported by hardware but SRQ is not 180 supported by driver. */ 181 mdev->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 182 IB_DEVICE_PORT_ACTIVE_EVENT | 183 IB_DEVICE_SYS_IMAGE_GUID | 184 IB_DEVICE_RC_RNR_NAK_GEN; 185 186 if (dev_lim->flags & DEV_LIM_FLAG_BAD_PKEY_CNTR) 187 mdev->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 188 189 if (dev_lim->flags & DEV_LIM_FLAG_BAD_QKEY_CNTR) 190 mdev->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 191 192 if (dev_lim->flags & DEV_LIM_FLAG_RAW_MULTI) 193 mdev->device_cap_flags |= IB_DEVICE_RAW_MULTI; 194 195 if (dev_lim->flags & DEV_LIM_FLAG_AUTO_PATH_MIG) 196 mdev->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 197 198 if (dev_lim->flags & DEV_LIM_FLAG_UD_AV_PORT_ENFORCE) 199 mdev->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 200 201 if (dev_lim->flags & DEV_LIM_FLAG_SRQ) 202 mdev->mthca_flags |= MTHCA_FLAG_SRQ; 203 204 return 0; 205 } 206 207 static int __devinit mthca_init_tavor(struct mthca_dev *mdev) 208 { 209 u8 status; 210 int err; 211 struct mthca_dev_lim dev_lim; 212 struct mthca_profile profile; 213 struct mthca_init_hca_param init_hca; 214 struct mthca_adapter adapter; 215 216 err = mthca_SYS_EN(mdev, &status); 217 if (err) { 218 mthca_err(mdev, "SYS_EN command failed, aborting.\n"); 219 return err; 220 } 221 if (status) { 222 mthca_err(mdev, "SYS_EN returned status 0x%02x, " 223 "aborting.\n", status); 224 return -EINVAL; 225 } 226 227 err = mthca_QUERY_FW(mdev, &status); 228 if (err) { 229 mthca_err(mdev, "QUERY_FW command failed, aborting.\n"); 230 goto err_disable; 231 } 232 if (status) { 233 mthca_err(mdev, "QUERY_FW returned status 0x%02x, " 234 "aborting.\n", status); 235 err = -EINVAL; 236 goto err_disable; 237 } 238 err = mthca_QUERY_DDR(mdev, &status); 239 if (err) { 240 mthca_err(mdev, "QUERY_DDR command failed, aborting.\n"); 241 goto err_disable; 242 } 243 if (status) { 244 mthca_err(mdev, "QUERY_DDR returned status 0x%02x, " 245 "aborting.\n", status); 246 err = -EINVAL; 247 goto err_disable; 248 } 249 250 err = mthca_dev_lim(mdev, &dev_lim); 251 252 profile = default_profile; 253 profile.num_uar = dev_lim.uar_size / PAGE_SIZE; 254 profile.uarc_size = 0; 255 256 err = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca); 257 if (err < 0) 258 goto err_disable; 259 260 err = mthca_INIT_HCA(mdev, &init_hca, &status); 261 if (err) { 262 mthca_err(mdev, "INIT_HCA command failed, aborting.\n"); 263 goto err_disable; 264 } 265 if (status) { 266 mthca_err(mdev, "INIT_HCA returned status 0x%02x, " 267 "aborting.\n", status); 268 err = -EINVAL; 269 goto err_disable; 270 } 271 272 err = mthca_QUERY_ADAPTER(mdev, &adapter, &status); 273 if (err) { 274 mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n"); 275 goto err_close; 276 } 277 if (status) { 278 mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, " 279 "aborting.\n", status); 280 err = -EINVAL; 281 goto err_close; 282 } 283 284 mdev->eq_table.inta_pin = adapter.inta_pin; 285 mdev->rev_id = adapter.revision_id; 286 287 return 0; 288 289 err_close: 290 mthca_CLOSE_HCA(mdev, 0, &status); 291 292 err_disable: 293 mthca_SYS_DIS(mdev, &status); 294 295 return err; 296 } 297 298 static int __devinit mthca_load_fw(struct mthca_dev *mdev) 299 { 300 u8 status; 301 int err; 302 303 /* FIXME: use HCA-attached memory for FW if present */ 304 305 mdev->fw.arbel.fw_icm = 306 mthca_alloc_icm(mdev, mdev->fw.arbel.fw_pages, 307 GFP_HIGHUSER | __GFP_NOWARN); 308 if (!mdev->fw.arbel.fw_icm) { 309 mthca_err(mdev, "Couldn't allocate FW area, aborting.\n"); 310 return -ENOMEM; 311 } 312 313 err = mthca_MAP_FA(mdev, mdev->fw.arbel.fw_icm, &status); 314 if (err) { 315 mthca_err(mdev, "MAP_FA command failed, aborting.\n"); 316 goto err_free; 317 } 318 if (status) { 319 mthca_err(mdev, "MAP_FA returned status 0x%02x, aborting.\n", status); 320 err = -EINVAL; 321 goto err_free; 322 } 323 err = mthca_RUN_FW(mdev, &status); 324 if (err) { 325 mthca_err(mdev, "RUN_FW command failed, aborting.\n"); 326 goto err_unmap_fa; 327 } 328 if (status) { 329 mthca_err(mdev, "RUN_FW returned status 0x%02x, aborting.\n", status); 330 err = -EINVAL; 331 goto err_unmap_fa; 332 } 333 334 return 0; 335 336 err_unmap_fa: 337 mthca_UNMAP_FA(mdev, &status); 338 339 err_free: 340 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm); 341 return err; 342 } 343 344 static int __devinit mthca_init_icm(struct mthca_dev *mdev, 345 struct mthca_dev_lim *dev_lim, 346 struct mthca_init_hca_param *init_hca, 347 u64 icm_size) 348 { 349 u64 aux_pages; 350 u8 status; 351 int err; 352 353 err = mthca_SET_ICM_SIZE(mdev, icm_size, &aux_pages, &status); 354 if (err) { 355 mthca_err(mdev, "SET_ICM_SIZE command failed, aborting.\n"); 356 return err; 357 } 358 if (status) { 359 mthca_err(mdev, "SET_ICM_SIZE returned status 0x%02x, " 360 "aborting.\n", status); 361 return -EINVAL; 362 } 363 364 mthca_dbg(mdev, "%lld KB of HCA context requires %lld KB aux memory.\n", 365 (unsigned long long) icm_size >> 10, 366 (unsigned long long) aux_pages << 2); 367 368 mdev->fw.arbel.aux_icm = mthca_alloc_icm(mdev, aux_pages, 369 GFP_HIGHUSER | __GFP_NOWARN); 370 if (!mdev->fw.arbel.aux_icm) { 371 mthca_err(mdev, "Couldn't allocate aux memory, aborting.\n"); 372 return -ENOMEM; 373 } 374 375 err = mthca_MAP_ICM_AUX(mdev, mdev->fw.arbel.aux_icm, &status); 376 if (err) { 377 mthca_err(mdev, "MAP_ICM_AUX command failed, aborting.\n"); 378 goto err_free_aux; 379 } 380 if (status) { 381 mthca_err(mdev, "MAP_ICM_AUX returned status 0x%02x, aborting.\n", status); 382 err = -EINVAL; 383 goto err_free_aux; 384 } 385 386 err = mthca_map_eq_icm(mdev, init_hca->eqc_base); 387 if (err) { 388 mthca_err(mdev, "Failed to map EQ context memory, aborting.\n"); 389 goto err_unmap_aux; 390 } 391 392 mdev->mr_table.mtt_table = mthca_alloc_icm_table(mdev, init_hca->mtt_base, 393 dev_lim->mtt_seg_sz, 394 mdev->limits.num_mtt_segs, 395 mdev->limits.reserved_mtts, 1); 396 if (!mdev->mr_table.mtt_table) { 397 mthca_err(mdev, "Failed to map MTT context memory, aborting.\n"); 398 err = -ENOMEM; 399 goto err_unmap_eq; 400 } 401 402 mdev->mr_table.mpt_table = mthca_alloc_icm_table(mdev, init_hca->mpt_base, 403 dev_lim->mpt_entry_sz, 404 mdev->limits.num_mpts, 405 mdev->limits.reserved_mrws, 1); 406 if (!mdev->mr_table.mpt_table) { 407 mthca_err(mdev, "Failed to map MPT context memory, aborting.\n"); 408 err = -ENOMEM; 409 goto err_unmap_mtt; 410 } 411 412 mdev->qp_table.qp_table = mthca_alloc_icm_table(mdev, init_hca->qpc_base, 413 dev_lim->qpc_entry_sz, 414 mdev->limits.num_qps, 415 mdev->limits.reserved_qps, 0); 416 if (!mdev->qp_table.qp_table) { 417 mthca_err(mdev, "Failed to map QP context memory, aborting.\n"); 418 err = -ENOMEM; 419 goto err_unmap_mpt; 420 } 421 422 mdev->qp_table.eqp_table = mthca_alloc_icm_table(mdev, init_hca->eqpc_base, 423 dev_lim->eqpc_entry_sz, 424 mdev->limits.num_qps, 425 mdev->limits.reserved_qps, 0); 426 if (!mdev->qp_table.eqp_table) { 427 mthca_err(mdev, "Failed to map EQP context memory, aborting.\n"); 428 err = -ENOMEM; 429 goto err_unmap_qp; 430 } 431 432 mdev->cq_table.table = mthca_alloc_icm_table(mdev, init_hca->cqc_base, 433 dev_lim->cqc_entry_sz, 434 mdev->limits.num_cqs, 435 mdev->limits.reserved_cqs, 0); 436 if (!mdev->cq_table.table) { 437 mthca_err(mdev, "Failed to map CQ context memory, aborting.\n"); 438 err = -ENOMEM; 439 goto err_unmap_eqp; 440 } 441 442 /* 443 * It's not strictly required, but for simplicity just map the 444 * whole multicast group table now. The table isn't very big 445 * and it's a lot easier than trying to track ref counts. 446 */ 447 mdev->mcg_table.table = mthca_alloc_icm_table(mdev, init_hca->mc_base, 448 MTHCA_MGM_ENTRY_SIZE, 449 mdev->limits.num_mgms + 450 mdev->limits.num_amgms, 451 mdev->limits.num_mgms + 452 mdev->limits.num_amgms, 453 0); 454 if (!mdev->mcg_table.table) { 455 mthca_err(mdev, "Failed to map MCG context memory, aborting.\n"); 456 err = -ENOMEM; 457 goto err_unmap_cq; 458 } 459 460 return 0; 461 462 err_unmap_cq: 463 mthca_free_icm_table(mdev, mdev->cq_table.table); 464 465 err_unmap_eqp: 466 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table); 467 468 err_unmap_qp: 469 mthca_free_icm_table(mdev, mdev->qp_table.qp_table); 470 471 err_unmap_mpt: 472 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table); 473 474 err_unmap_mtt: 475 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table); 476 477 err_unmap_eq: 478 mthca_unmap_eq_icm(mdev); 479 480 err_unmap_aux: 481 mthca_UNMAP_ICM_AUX(mdev, &status); 482 483 err_free_aux: 484 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm); 485 486 return err; 487 } 488 489 static int __devinit mthca_init_arbel(struct mthca_dev *mdev) 490 { 491 struct mthca_dev_lim dev_lim; 492 struct mthca_profile profile; 493 struct mthca_init_hca_param init_hca; 494 struct mthca_adapter adapter; 495 u64 icm_size; 496 u8 status; 497 int err; 498 499 err = mthca_QUERY_FW(mdev, &status); 500 if (err) { 501 mthca_err(mdev, "QUERY_FW command failed, aborting.\n"); 502 return err; 503 } 504 if (status) { 505 mthca_err(mdev, "QUERY_FW returned status 0x%02x, " 506 "aborting.\n", status); 507 return -EINVAL; 508 } 509 510 err = mthca_ENABLE_LAM(mdev, &status); 511 if (err) { 512 mthca_err(mdev, "ENABLE_LAM command failed, aborting.\n"); 513 return err; 514 } 515 if (status == MTHCA_CMD_STAT_LAM_NOT_PRE) { 516 mthca_dbg(mdev, "No HCA-attached memory (running in MemFree mode)\n"); 517 mdev->mthca_flags |= MTHCA_FLAG_NO_LAM; 518 } else if (status) { 519 mthca_err(mdev, "ENABLE_LAM returned status 0x%02x, " 520 "aborting.\n", status); 521 return -EINVAL; 522 } 523 524 err = mthca_load_fw(mdev); 525 if (err) { 526 mthca_err(mdev, "Failed to start FW, aborting.\n"); 527 goto err_disable; 528 } 529 530 err = mthca_dev_lim(mdev, &dev_lim); 531 if (err) { 532 mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n"); 533 goto err_stop_fw; 534 } 535 536 profile = default_profile; 537 profile.num_uar = dev_lim.uar_size / PAGE_SIZE; 538 profile.num_udav = 0; 539 540 icm_size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca); 541 if ((int) icm_size < 0) { 542 err = icm_size; 543 goto err_stop_fw; 544 } 545 546 err = mthca_init_icm(mdev, &dev_lim, &init_hca, icm_size); 547 if (err) 548 goto err_stop_fw; 549 550 err = mthca_INIT_HCA(mdev, &init_hca, &status); 551 if (err) { 552 mthca_err(mdev, "INIT_HCA command failed, aborting.\n"); 553 goto err_free_icm; 554 } 555 if (status) { 556 mthca_err(mdev, "INIT_HCA returned status 0x%02x, " 557 "aborting.\n", status); 558 err = -EINVAL; 559 goto err_free_icm; 560 } 561 562 err = mthca_QUERY_ADAPTER(mdev, &adapter, &status); 563 if (err) { 564 mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n"); 565 goto err_free_icm; 566 } 567 if (status) { 568 mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, " 569 "aborting.\n", status); 570 err = -EINVAL; 571 goto err_free_icm; 572 } 573 574 mdev->eq_table.inta_pin = adapter.inta_pin; 575 mdev->rev_id = adapter.revision_id; 576 577 return 0; 578 579 err_free_icm: 580 mthca_free_icm_table(mdev, mdev->cq_table.table); 581 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table); 582 mthca_free_icm_table(mdev, mdev->qp_table.qp_table); 583 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table); 584 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table); 585 mthca_unmap_eq_icm(mdev); 586 587 mthca_UNMAP_ICM_AUX(mdev, &status); 588 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm); 589 590 err_stop_fw: 591 mthca_UNMAP_FA(mdev, &status); 592 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm); 593 594 err_disable: 595 if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM)) 596 mthca_DISABLE_LAM(mdev, &status); 597 598 return err; 599 } 600 601 static int __devinit mthca_init_hca(struct mthca_dev *mdev) 602 { 603 if (mdev->hca_type == ARBEL_NATIVE) 604 return mthca_init_arbel(mdev); 605 else 606 return mthca_init_tavor(mdev); 607 } 608 609 static int __devinit mthca_setup_hca(struct mthca_dev *dev) 610 { 611 int err; 612 u8 status; 613 614 MTHCA_INIT_DOORBELL_LOCK(&dev->doorbell_lock); 615 616 err = mthca_init_uar_table(dev); 617 if (err) { 618 mthca_err(dev, "Failed to initialize " 619 "user access region table, aborting.\n"); 620 return err; 621 } 622 623 err = mthca_uar_alloc(dev, &dev->driver_uar); 624 if (err) { 625 mthca_err(dev, "Failed to allocate driver access region, " 626 "aborting.\n"); 627 goto err_uar_table_free; 628 } 629 630 dev->kar = ioremap(dev->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE); 631 if (!dev->kar) { 632 mthca_err(dev, "Couldn't map kernel access region, " 633 "aborting.\n"); 634 err = -ENOMEM; 635 goto err_uar_free; 636 } 637 638 err = mthca_init_pd_table(dev); 639 if (err) { 640 mthca_err(dev, "Failed to initialize " 641 "protection domain table, aborting.\n"); 642 goto err_kar_unmap; 643 } 644 645 err = mthca_init_mr_table(dev); 646 if (err) { 647 mthca_err(dev, "Failed to initialize " 648 "memory region table, aborting.\n"); 649 goto err_pd_table_free; 650 } 651 652 err = mthca_pd_alloc(dev, &dev->driver_pd); 653 if (err) { 654 mthca_err(dev, "Failed to create driver PD, " 655 "aborting.\n"); 656 goto err_mr_table_free; 657 } 658 659 err = mthca_init_eq_table(dev); 660 if (err) { 661 mthca_err(dev, "Failed to initialize " 662 "event queue table, aborting.\n"); 663 goto err_pd_free; 664 } 665 666 err = mthca_cmd_use_events(dev); 667 if (err) { 668 mthca_err(dev, "Failed to switch to event-driven " 669 "firmware commands, aborting.\n"); 670 goto err_eq_table_free; 671 } 672 673 err = mthca_NOP(dev, &status); 674 if (err || status) { 675 mthca_err(dev, "NOP command failed to generate interrupt, aborting.\n"); 676 if (dev->mthca_flags & (MTHCA_FLAG_MSI | MTHCA_FLAG_MSI_X)) 677 mthca_err(dev, "Try again with MSI/MSI-X disabled.\n"); 678 else 679 mthca_err(dev, "BIOS or ACPI interrupt routing problem?\n"); 680 681 goto err_cmd_poll; 682 } 683 684 mthca_dbg(dev, "NOP command IRQ test passed\n"); 685 686 err = mthca_init_cq_table(dev); 687 if (err) { 688 mthca_err(dev, "Failed to initialize " 689 "completion queue table, aborting.\n"); 690 goto err_cmd_poll; 691 } 692 693 err = mthca_init_qp_table(dev); 694 if (err) { 695 mthca_err(dev, "Failed to initialize " 696 "queue pair table, aborting.\n"); 697 goto err_cq_table_free; 698 } 699 700 err = mthca_init_av_table(dev); 701 if (err) { 702 mthca_err(dev, "Failed to initialize " 703 "address vector table, aborting.\n"); 704 goto err_qp_table_free; 705 } 706 707 err = mthca_init_mcg_table(dev); 708 if (err) { 709 mthca_err(dev, "Failed to initialize " 710 "multicast group table, aborting.\n"); 711 goto err_av_table_free; 712 } 713 714 return 0; 715 716 err_av_table_free: 717 mthca_cleanup_av_table(dev); 718 719 err_qp_table_free: 720 mthca_cleanup_qp_table(dev); 721 722 err_cq_table_free: 723 mthca_cleanup_cq_table(dev); 724 725 err_cmd_poll: 726 mthca_cmd_use_polling(dev); 727 728 err_eq_table_free: 729 mthca_cleanup_eq_table(dev); 730 731 err_pd_free: 732 mthca_pd_free(dev, &dev->driver_pd); 733 734 err_mr_table_free: 735 mthca_cleanup_mr_table(dev); 736 737 err_pd_table_free: 738 mthca_cleanup_pd_table(dev); 739 740 err_kar_unmap: 741 iounmap(dev->kar); 742 743 err_uar_free: 744 mthca_uar_free(dev, &dev->driver_uar); 745 746 err_uar_table_free: 747 mthca_cleanup_uar_table(dev); 748 return err; 749 } 750 751 static int __devinit mthca_request_regions(struct pci_dev *pdev, 752 int ddr_hidden) 753 { 754 int err; 755 756 /* 757 * We can't just use pci_request_regions() because the MSI-X 758 * table is right in the middle of the first BAR. If we did 759 * pci_request_region and grab all of the first BAR, then 760 * setting up MSI-X would fail, since the PCI core wants to do 761 * request_mem_region on the MSI-X vector table. 762 * 763 * So just request what we need right now, and request any 764 * other regions we need when setting up EQs. 765 */ 766 if (!request_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, 767 MTHCA_HCR_SIZE, DRV_NAME)) 768 return -EBUSY; 769 770 err = pci_request_region(pdev, 2, DRV_NAME); 771 if (err) 772 goto err_bar2_failed; 773 774 if (!ddr_hidden) { 775 err = pci_request_region(pdev, 4, DRV_NAME); 776 if (err) 777 goto err_bar4_failed; 778 } 779 780 return 0; 781 782 err_bar4_failed: 783 pci_release_region(pdev, 2); 784 785 err_bar2_failed: 786 release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, 787 MTHCA_HCR_SIZE); 788 789 return err; 790 } 791 792 static void mthca_release_regions(struct pci_dev *pdev, 793 int ddr_hidden) 794 { 795 if (!ddr_hidden) 796 pci_release_region(pdev, 4); 797 798 pci_release_region(pdev, 2); 799 800 release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, 801 MTHCA_HCR_SIZE); 802 } 803 804 static int __devinit mthca_enable_msi_x(struct mthca_dev *mdev) 805 { 806 struct msix_entry entries[3]; 807 int err; 808 809 entries[0].entry = 0; 810 entries[1].entry = 1; 811 entries[2].entry = 2; 812 813 err = pci_enable_msix(mdev->pdev, entries, ARRAY_SIZE(entries)); 814 if (err) { 815 if (err > 0) 816 mthca_info(mdev, "Only %d MSI-X vectors available, " 817 "not using MSI-X\n", err); 818 return err; 819 } 820 821 mdev->eq_table.eq[MTHCA_EQ_COMP ].msi_x_vector = entries[0].vector; 822 mdev->eq_table.eq[MTHCA_EQ_ASYNC].msi_x_vector = entries[1].vector; 823 mdev->eq_table.eq[MTHCA_EQ_CMD ].msi_x_vector = entries[2].vector; 824 825 return 0; 826 } 827 828 static void mthca_close_hca(struct mthca_dev *mdev) 829 { 830 u8 status; 831 832 mthca_CLOSE_HCA(mdev, 0, &status); 833 834 if (mdev->hca_type == ARBEL_NATIVE) { 835 mthca_free_icm_table(mdev, mdev->cq_table.table); 836 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table); 837 mthca_free_icm_table(mdev, mdev->qp_table.qp_table); 838 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table); 839 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table); 840 mthca_unmap_eq_icm(mdev); 841 842 mthca_UNMAP_ICM_AUX(mdev, &status); 843 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm); 844 845 mthca_UNMAP_FA(mdev, &status); 846 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm); 847 848 if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM)) 849 mthca_DISABLE_LAM(mdev, &status); 850 } else 851 mthca_SYS_DIS(mdev, &status); 852 } 853 854 static int __devinit mthca_init_one(struct pci_dev *pdev, 855 const struct pci_device_id *id) 856 { 857 static int mthca_version_printed = 0; 858 static int mthca_memfree_warned = 0; 859 int ddr_hidden = 0; 860 int err; 861 struct mthca_dev *mdev; 862 863 if (!mthca_version_printed) { 864 printk(KERN_INFO "%s", mthca_version); 865 ++mthca_version_printed; 866 } 867 868 printk(KERN_INFO PFX "Initializing %s (%s)\n", 869 pci_pretty_name(pdev), pci_name(pdev)); 870 871 err = pci_enable_device(pdev); 872 if (err) { 873 dev_err(&pdev->dev, "Cannot enable PCI device, " 874 "aborting.\n"); 875 return err; 876 } 877 878 /* 879 * Check for BARs. We expect 0: 1MB, 2: 8MB, 4: DDR (may not 880 * be present) 881 */ 882 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) || 883 pci_resource_len(pdev, 0) != 1 << 20) { 884 dev_err(&pdev->dev, "Missing DCS, aborting."); 885 err = -ENODEV; 886 goto err_disable_pdev; 887 } 888 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM) || 889 pci_resource_len(pdev, 2) != 1 << 23) { 890 dev_err(&pdev->dev, "Missing UAR, aborting."); 891 err = -ENODEV; 892 goto err_disable_pdev; 893 } 894 if (!(pci_resource_flags(pdev, 4) & IORESOURCE_MEM)) 895 ddr_hidden = 1; 896 897 err = mthca_request_regions(pdev, ddr_hidden); 898 if (err) { 899 dev_err(&pdev->dev, "Cannot obtain PCI resources, " 900 "aborting.\n"); 901 goto err_disable_pdev; 902 } 903 904 pci_set_master(pdev); 905 906 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); 907 if (err) { 908 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n"); 909 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 910 if (err) { 911 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n"); 912 goto err_free_res; 913 } 914 } 915 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); 916 if (err) { 917 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit " 918 "consistent PCI DMA mask.\n"); 919 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); 920 if (err) { 921 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, " 922 "aborting.\n"); 923 goto err_free_res; 924 } 925 } 926 927 mdev = (struct mthca_dev *) ib_alloc_device(sizeof *mdev); 928 if (!mdev) { 929 dev_err(&pdev->dev, "Device struct alloc failed, " 930 "aborting.\n"); 931 err = -ENOMEM; 932 goto err_free_res; 933 } 934 935 mdev->pdev = pdev; 936 mdev->hca_type = id->driver_data; 937 938 if (mdev->hca_type == ARBEL_NATIVE && !mthca_memfree_warned++) 939 mthca_warn(mdev, "Warning: native MT25208 mode support is incomplete. " 940 "Your HCA may not work properly.\n"); 941 942 if (ddr_hidden) 943 mdev->mthca_flags |= MTHCA_FLAG_DDR_HIDDEN; 944 945 /* 946 * Now reset the HCA before we touch the PCI capabilities or 947 * attempt a firmware command, since a boot ROM may have left 948 * the HCA in an undefined state. 949 */ 950 err = mthca_reset(mdev); 951 if (err) { 952 mthca_err(mdev, "Failed to reset HCA, aborting.\n"); 953 goto err_free_dev; 954 } 955 956 if (msi_x && !mthca_enable_msi_x(mdev)) 957 mdev->mthca_flags |= MTHCA_FLAG_MSI_X; 958 if (msi && !(mdev->mthca_flags & MTHCA_FLAG_MSI_X) && 959 !pci_enable_msi(pdev)) 960 mdev->mthca_flags |= MTHCA_FLAG_MSI; 961 962 sema_init(&mdev->cmd.hcr_sem, 1); 963 sema_init(&mdev->cmd.poll_sem, 1); 964 mdev->cmd.use_events = 0; 965 966 mdev->hcr = ioremap(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, MTHCA_HCR_SIZE); 967 if (!mdev->hcr) { 968 mthca_err(mdev, "Couldn't map command register, " 969 "aborting.\n"); 970 err = -ENOMEM; 971 goto err_free_dev; 972 } 973 974 err = mthca_tune_pci(mdev); 975 if (err) 976 goto err_iounmap; 977 978 err = mthca_init_hca(mdev); 979 if (err) 980 goto err_iounmap; 981 982 err = mthca_setup_hca(mdev); 983 if (err) 984 goto err_close; 985 986 err = mthca_register_device(mdev); 987 if (err) 988 goto err_cleanup; 989 990 err = mthca_create_agents(mdev); 991 if (err) 992 goto err_unregister; 993 994 pci_set_drvdata(pdev, mdev); 995 996 return 0; 997 998 err_unregister: 999 mthca_unregister_device(mdev); 1000 1001 err_cleanup: 1002 mthca_cleanup_mcg_table(mdev); 1003 mthca_cleanup_av_table(mdev); 1004 mthca_cleanup_qp_table(mdev); 1005 mthca_cleanup_cq_table(mdev); 1006 mthca_cmd_use_polling(mdev); 1007 mthca_cleanup_eq_table(mdev); 1008 1009 mthca_pd_free(mdev, &mdev->driver_pd); 1010 1011 mthca_cleanup_mr_table(mdev); 1012 mthca_cleanup_pd_table(mdev); 1013 mthca_cleanup_uar_table(mdev); 1014 1015 err_close: 1016 mthca_close_hca(mdev); 1017 1018 err_iounmap: 1019 iounmap(mdev->hcr); 1020 1021 err_free_dev: 1022 if (mdev->mthca_flags & MTHCA_FLAG_MSI_X) 1023 pci_disable_msix(pdev); 1024 if (mdev->mthca_flags & MTHCA_FLAG_MSI) 1025 pci_disable_msi(pdev); 1026 1027 ib_dealloc_device(&mdev->ib_dev); 1028 1029 err_free_res: 1030 mthca_release_regions(pdev, ddr_hidden); 1031 1032 err_disable_pdev: 1033 pci_disable_device(pdev); 1034 pci_set_drvdata(pdev, NULL); 1035 return err; 1036 } 1037 1038 static void __devexit mthca_remove_one(struct pci_dev *pdev) 1039 { 1040 struct mthca_dev *mdev = pci_get_drvdata(pdev); 1041 u8 status; 1042 int p; 1043 1044 if (mdev) { 1045 mthca_free_agents(mdev); 1046 mthca_unregister_device(mdev); 1047 1048 for (p = 1; p <= mdev->limits.num_ports; ++p) 1049 mthca_CLOSE_IB(mdev, p, &status); 1050 1051 mthca_cleanup_mcg_table(mdev); 1052 mthca_cleanup_av_table(mdev); 1053 mthca_cleanup_qp_table(mdev); 1054 mthca_cleanup_cq_table(mdev); 1055 mthca_cmd_use_polling(mdev); 1056 mthca_cleanup_eq_table(mdev); 1057 1058 mthca_pd_free(mdev, &mdev->driver_pd); 1059 1060 mthca_cleanup_mr_table(mdev); 1061 mthca_cleanup_pd_table(mdev); 1062 1063 iounmap(mdev->kar); 1064 mthca_uar_free(mdev, &mdev->driver_uar); 1065 mthca_cleanup_uar_table(mdev); 1066 1067 mthca_close_hca(mdev); 1068 1069 iounmap(mdev->hcr); 1070 1071 if (mdev->mthca_flags & MTHCA_FLAG_MSI_X) 1072 pci_disable_msix(pdev); 1073 if (mdev->mthca_flags & MTHCA_FLAG_MSI) 1074 pci_disable_msi(pdev); 1075 1076 ib_dealloc_device(&mdev->ib_dev); 1077 mthca_release_regions(pdev, mdev->mthca_flags & 1078 MTHCA_FLAG_DDR_HIDDEN); 1079 pci_disable_device(pdev); 1080 pci_set_drvdata(pdev, NULL); 1081 } 1082 } 1083 1084 static struct pci_device_id mthca_pci_table[] = { 1085 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR), 1086 .driver_data = TAVOR }, 1087 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_TAVOR), 1088 .driver_data = TAVOR }, 1089 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT), 1090 .driver_data = ARBEL_COMPAT }, 1091 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT), 1092 .driver_data = ARBEL_COMPAT }, 1093 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL), 1094 .driver_data = ARBEL_NATIVE }, 1095 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL), 1096 .driver_data = ARBEL_NATIVE }, 1097 { 0, } 1098 }; 1099 1100 MODULE_DEVICE_TABLE(pci, mthca_pci_table); 1101 1102 static struct pci_driver mthca_driver = { 1103 .name = "ib_mthca", 1104 .id_table = mthca_pci_table, 1105 .probe = mthca_init_one, 1106 .remove = __devexit_p(mthca_remove_one) 1107 }; 1108 1109 static int __init mthca_init(void) 1110 { 1111 int ret; 1112 1113 ret = pci_register_driver(&mthca_driver); 1114 return ret < 0 ? ret : 0; 1115 } 1116 1117 static void __exit mthca_cleanup(void) 1118 { 1119 pci_unregister_driver(&mthca_driver); 1120 } 1121 1122 module_init(mthca_init); 1123 module_exit(mthca_cleanup); 1124