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 .fmr_reserved_mtts = 1 << 18, /* Tavor only */ 84 .uarc_size = 1 << 18, /* Arbel only */ 85 }; 86 87 static int __devinit mthca_tune_pci(struct mthca_dev *mdev) 88 { 89 int cap; 90 u16 val; 91 92 /* First try to max out Read Byte Count */ 93 cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX); 94 if (cap) { 95 if (pci_read_config_word(mdev->pdev, cap + PCI_X_CMD, &val)) { 96 mthca_err(mdev, "Couldn't read PCI-X command register, " 97 "aborting.\n"); 98 return -ENODEV; 99 } 100 val = (val & ~PCI_X_CMD_MAX_READ) | (3 << 2); 101 if (pci_write_config_word(mdev->pdev, cap + PCI_X_CMD, val)) { 102 mthca_err(mdev, "Couldn't write PCI-X command register, " 103 "aborting.\n"); 104 return -ENODEV; 105 } 106 } else if (mdev->hca_type == TAVOR) 107 mthca_info(mdev, "No PCI-X capability, not setting RBC.\n"); 108 109 cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_EXP); 110 if (cap) { 111 if (pci_read_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, &val)) { 112 mthca_err(mdev, "Couldn't read PCI Express device control " 113 "register, aborting.\n"); 114 return -ENODEV; 115 } 116 val = (val & ~PCI_EXP_DEVCTL_READRQ) | (5 << 12); 117 if (pci_write_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, val)) { 118 mthca_err(mdev, "Couldn't write PCI Express device control " 119 "register, aborting.\n"); 120 return -ENODEV; 121 } 122 } else if (mdev->hca_type == ARBEL_NATIVE || 123 mdev->hca_type == ARBEL_COMPAT) 124 mthca_info(mdev, "No PCI Express capability, " 125 "not setting Max Read Request Size.\n"); 126 127 return 0; 128 } 129 130 static int __devinit mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim *dev_lim) 131 { 132 int err; 133 u8 status; 134 135 err = mthca_QUERY_DEV_LIM(mdev, dev_lim, &status); 136 if (err) { 137 mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n"); 138 return err; 139 } 140 if (status) { 141 mthca_err(mdev, "QUERY_DEV_LIM returned status 0x%02x, " 142 "aborting.\n", status); 143 return -EINVAL; 144 } 145 if (dev_lim->min_page_sz > PAGE_SIZE) { 146 mthca_err(mdev, "HCA minimum page size of %d bigger than " 147 "kernel PAGE_SIZE of %ld, aborting.\n", 148 dev_lim->min_page_sz, PAGE_SIZE); 149 return -ENODEV; 150 } 151 if (dev_lim->num_ports > MTHCA_MAX_PORTS) { 152 mthca_err(mdev, "HCA has %d ports, but we only support %d, " 153 "aborting.\n", 154 dev_lim->num_ports, MTHCA_MAX_PORTS); 155 return -ENODEV; 156 } 157 158 mdev->limits.num_ports = dev_lim->num_ports; 159 mdev->limits.vl_cap = dev_lim->max_vl; 160 mdev->limits.mtu_cap = dev_lim->max_mtu; 161 mdev->limits.gid_table_len = dev_lim->max_gids; 162 mdev->limits.pkey_table_len = dev_lim->max_pkeys; 163 mdev->limits.local_ca_ack_delay = dev_lim->local_ca_ack_delay; 164 mdev->limits.max_sg = dev_lim->max_sg; 165 mdev->limits.reserved_qps = dev_lim->reserved_qps; 166 mdev->limits.reserved_srqs = dev_lim->reserved_srqs; 167 mdev->limits.reserved_eecs = dev_lim->reserved_eecs; 168 mdev->limits.reserved_cqs = dev_lim->reserved_cqs; 169 mdev->limits.reserved_eqs = dev_lim->reserved_eqs; 170 mdev->limits.reserved_mtts = dev_lim->reserved_mtts; 171 mdev->limits.reserved_mrws = dev_lim->reserved_mrws; 172 mdev->limits.reserved_uars = dev_lim->reserved_uars; 173 mdev->limits.reserved_pds = dev_lim->reserved_pds; 174 175 /* IB_DEVICE_RESIZE_MAX_WR not supported by driver. 176 May be doable since hardware supports it for SRQ. 177 178 IB_DEVICE_N_NOTIFY_CQ is supported by hardware but not by driver. 179 180 IB_DEVICE_SRQ_RESIZE is supported by hardware but SRQ is not 181 supported by driver. */ 182 mdev->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 183 IB_DEVICE_PORT_ACTIVE_EVENT | 184 IB_DEVICE_SYS_IMAGE_GUID | 185 IB_DEVICE_RC_RNR_NAK_GEN; 186 187 if (dev_lim->flags & DEV_LIM_FLAG_BAD_PKEY_CNTR) 188 mdev->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 189 190 if (dev_lim->flags & DEV_LIM_FLAG_BAD_QKEY_CNTR) 191 mdev->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 192 193 if (dev_lim->flags & DEV_LIM_FLAG_RAW_MULTI) 194 mdev->device_cap_flags |= IB_DEVICE_RAW_MULTI; 195 196 if (dev_lim->flags & DEV_LIM_FLAG_AUTO_PATH_MIG) 197 mdev->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 198 199 if (dev_lim->flags & DEV_LIM_FLAG_UD_AV_PORT_ENFORCE) 200 mdev->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 201 202 if (dev_lim->flags & DEV_LIM_FLAG_SRQ) 203 mdev->mthca_flags |= MTHCA_FLAG_SRQ; 204 205 return 0; 206 } 207 208 static int __devinit mthca_init_tavor(struct mthca_dev *mdev) 209 { 210 u8 status; 211 int err; 212 struct mthca_dev_lim dev_lim; 213 struct mthca_profile profile; 214 struct mthca_init_hca_param init_hca; 215 struct mthca_adapter adapter; 216 217 err = mthca_SYS_EN(mdev, &status); 218 if (err) { 219 mthca_err(mdev, "SYS_EN command failed, aborting.\n"); 220 return err; 221 } 222 if (status) { 223 mthca_err(mdev, "SYS_EN returned status 0x%02x, " 224 "aborting.\n", status); 225 return -EINVAL; 226 } 227 228 err = mthca_QUERY_FW(mdev, &status); 229 if (err) { 230 mthca_err(mdev, "QUERY_FW command failed, aborting.\n"); 231 goto err_disable; 232 } 233 if (status) { 234 mthca_err(mdev, "QUERY_FW returned status 0x%02x, " 235 "aborting.\n", status); 236 err = -EINVAL; 237 goto err_disable; 238 } 239 err = mthca_QUERY_DDR(mdev, &status); 240 if (err) { 241 mthca_err(mdev, "QUERY_DDR command failed, aborting.\n"); 242 goto err_disable; 243 } 244 if (status) { 245 mthca_err(mdev, "QUERY_DDR returned status 0x%02x, " 246 "aborting.\n", status); 247 err = -EINVAL; 248 goto err_disable; 249 } 250 251 err = mthca_dev_lim(mdev, &dev_lim); 252 253 profile = default_profile; 254 profile.num_uar = dev_lim.uar_size / PAGE_SIZE; 255 profile.uarc_size = 0; 256 257 err = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca); 258 if (err < 0) 259 goto err_disable; 260 261 err = mthca_INIT_HCA(mdev, &init_hca, &status); 262 if (err) { 263 mthca_err(mdev, "INIT_HCA command failed, aborting.\n"); 264 goto err_disable; 265 } 266 if (status) { 267 mthca_err(mdev, "INIT_HCA returned status 0x%02x, " 268 "aborting.\n", status); 269 err = -EINVAL; 270 goto err_disable; 271 } 272 273 err = mthca_QUERY_ADAPTER(mdev, &adapter, &status); 274 if (err) { 275 mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n"); 276 goto err_close; 277 } 278 if (status) { 279 mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, " 280 "aborting.\n", status); 281 err = -EINVAL; 282 goto err_close; 283 } 284 285 mdev->eq_table.inta_pin = adapter.inta_pin; 286 mdev->rev_id = adapter.revision_id; 287 288 return 0; 289 290 err_close: 291 mthca_CLOSE_HCA(mdev, 0, &status); 292 293 err_disable: 294 mthca_SYS_DIS(mdev, &status); 295 296 return err; 297 } 298 299 static int __devinit mthca_load_fw(struct mthca_dev *mdev) 300 { 301 u8 status; 302 int err; 303 304 /* FIXME: use HCA-attached memory for FW if present */ 305 306 mdev->fw.arbel.fw_icm = 307 mthca_alloc_icm(mdev, mdev->fw.arbel.fw_pages, 308 GFP_HIGHUSER | __GFP_NOWARN); 309 if (!mdev->fw.arbel.fw_icm) { 310 mthca_err(mdev, "Couldn't allocate FW area, aborting.\n"); 311 return -ENOMEM; 312 } 313 314 err = mthca_MAP_FA(mdev, mdev->fw.arbel.fw_icm, &status); 315 if (err) { 316 mthca_err(mdev, "MAP_FA command failed, aborting.\n"); 317 goto err_free; 318 } 319 if (status) { 320 mthca_err(mdev, "MAP_FA returned status 0x%02x, aborting.\n", status); 321 err = -EINVAL; 322 goto err_free; 323 } 324 err = mthca_RUN_FW(mdev, &status); 325 if (err) { 326 mthca_err(mdev, "RUN_FW command failed, aborting.\n"); 327 goto err_unmap_fa; 328 } 329 if (status) { 330 mthca_err(mdev, "RUN_FW returned status 0x%02x, aborting.\n", status); 331 err = -EINVAL; 332 goto err_unmap_fa; 333 } 334 335 return 0; 336 337 err_unmap_fa: 338 mthca_UNMAP_FA(mdev, &status); 339 340 err_free: 341 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm); 342 return err; 343 } 344 345 static int __devinit mthca_init_icm(struct mthca_dev *mdev, 346 struct mthca_dev_lim *dev_lim, 347 struct mthca_init_hca_param *init_hca, 348 u64 icm_size) 349 { 350 u64 aux_pages; 351 u8 status; 352 int err; 353 354 err = mthca_SET_ICM_SIZE(mdev, icm_size, &aux_pages, &status); 355 if (err) { 356 mthca_err(mdev, "SET_ICM_SIZE command failed, aborting.\n"); 357 return err; 358 } 359 if (status) { 360 mthca_err(mdev, "SET_ICM_SIZE returned status 0x%02x, " 361 "aborting.\n", status); 362 return -EINVAL; 363 } 364 365 mthca_dbg(mdev, "%lld KB of HCA context requires %lld KB aux memory.\n", 366 (unsigned long long) icm_size >> 10, 367 (unsigned long long) aux_pages << 2); 368 369 mdev->fw.arbel.aux_icm = mthca_alloc_icm(mdev, aux_pages, 370 GFP_HIGHUSER | __GFP_NOWARN); 371 if (!mdev->fw.arbel.aux_icm) { 372 mthca_err(mdev, "Couldn't allocate aux memory, aborting.\n"); 373 return -ENOMEM; 374 } 375 376 err = mthca_MAP_ICM_AUX(mdev, mdev->fw.arbel.aux_icm, &status); 377 if (err) { 378 mthca_err(mdev, "MAP_ICM_AUX command failed, aborting.\n"); 379 goto err_free_aux; 380 } 381 if (status) { 382 mthca_err(mdev, "MAP_ICM_AUX returned status 0x%02x, aborting.\n", status); 383 err = -EINVAL; 384 goto err_free_aux; 385 } 386 387 err = mthca_map_eq_icm(mdev, init_hca->eqc_base); 388 if (err) { 389 mthca_err(mdev, "Failed to map EQ context memory, aborting.\n"); 390 goto err_unmap_aux; 391 } 392 393 mdev->mr_table.mtt_table = mthca_alloc_icm_table(mdev, init_hca->mtt_base, 394 MTHCA_MTT_SEG_SIZE, 395 mdev->limits.num_mtt_segs, 396 mdev->limits.reserved_mtts, 1); 397 if (!mdev->mr_table.mtt_table) { 398 mthca_err(mdev, "Failed to map MTT context memory, aborting.\n"); 399 err = -ENOMEM; 400 goto err_unmap_eq; 401 } 402 403 mdev->mr_table.mpt_table = mthca_alloc_icm_table(mdev, init_hca->mpt_base, 404 dev_lim->mpt_entry_sz, 405 mdev->limits.num_mpts, 406 mdev->limits.reserved_mrws, 1); 407 if (!mdev->mr_table.mpt_table) { 408 mthca_err(mdev, "Failed to map MPT context memory, aborting.\n"); 409 err = -ENOMEM; 410 goto err_unmap_mtt; 411 } 412 413 mdev->qp_table.qp_table = mthca_alloc_icm_table(mdev, init_hca->qpc_base, 414 dev_lim->qpc_entry_sz, 415 mdev->limits.num_qps, 416 mdev->limits.reserved_qps, 0); 417 if (!mdev->qp_table.qp_table) { 418 mthca_err(mdev, "Failed to map QP context memory, aborting.\n"); 419 err = -ENOMEM; 420 goto err_unmap_mpt; 421 } 422 423 mdev->qp_table.eqp_table = mthca_alloc_icm_table(mdev, init_hca->eqpc_base, 424 dev_lim->eqpc_entry_sz, 425 mdev->limits.num_qps, 426 mdev->limits.reserved_qps, 0); 427 if (!mdev->qp_table.eqp_table) { 428 mthca_err(mdev, "Failed to map EQP context memory, aborting.\n"); 429 err = -ENOMEM; 430 goto err_unmap_qp; 431 } 432 433 mdev->qp_table.rdb_table = mthca_alloc_icm_table(mdev, init_hca->rdb_base, 434 MTHCA_RDB_ENTRY_SIZE, 435 mdev->limits.num_qps << 436 mdev->qp_table.rdb_shift, 437 0, 0); 438 if (!mdev->qp_table.rdb_table) { 439 mthca_err(mdev, "Failed to map RDB context memory, aborting\n"); 440 err = -ENOMEM; 441 goto err_unmap_eqp; 442 } 443 444 mdev->cq_table.table = mthca_alloc_icm_table(mdev, init_hca->cqc_base, 445 dev_lim->cqc_entry_sz, 446 mdev->limits.num_cqs, 447 mdev->limits.reserved_cqs, 0); 448 if (!mdev->cq_table.table) { 449 mthca_err(mdev, "Failed to map CQ context memory, aborting.\n"); 450 err = -ENOMEM; 451 goto err_unmap_rdb; 452 } 453 454 /* 455 * It's not strictly required, but for simplicity just map the 456 * whole multicast group table now. The table isn't very big 457 * and it's a lot easier than trying to track ref counts. 458 */ 459 mdev->mcg_table.table = mthca_alloc_icm_table(mdev, init_hca->mc_base, 460 MTHCA_MGM_ENTRY_SIZE, 461 mdev->limits.num_mgms + 462 mdev->limits.num_amgms, 463 mdev->limits.num_mgms + 464 mdev->limits.num_amgms, 465 0); 466 if (!mdev->mcg_table.table) { 467 mthca_err(mdev, "Failed to map MCG context memory, aborting.\n"); 468 err = -ENOMEM; 469 goto err_unmap_cq; 470 } 471 472 return 0; 473 474 err_unmap_cq: 475 mthca_free_icm_table(mdev, mdev->cq_table.table); 476 477 err_unmap_rdb: 478 mthca_free_icm_table(mdev, mdev->qp_table.rdb_table); 479 480 err_unmap_eqp: 481 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table); 482 483 err_unmap_qp: 484 mthca_free_icm_table(mdev, mdev->qp_table.qp_table); 485 486 err_unmap_mpt: 487 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table); 488 489 err_unmap_mtt: 490 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table); 491 492 err_unmap_eq: 493 mthca_unmap_eq_icm(mdev); 494 495 err_unmap_aux: 496 mthca_UNMAP_ICM_AUX(mdev, &status); 497 498 err_free_aux: 499 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm); 500 501 return err; 502 } 503 504 static int __devinit mthca_init_arbel(struct mthca_dev *mdev) 505 { 506 struct mthca_dev_lim dev_lim; 507 struct mthca_profile profile; 508 struct mthca_init_hca_param init_hca; 509 struct mthca_adapter adapter; 510 u64 icm_size; 511 u8 status; 512 int err; 513 514 err = mthca_QUERY_FW(mdev, &status); 515 if (err) { 516 mthca_err(mdev, "QUERY_FW command failed, aborting.\n"); 517 return err; 518 } 519 if (status) { 520 mthca_err(mdev, "QUERY_FW returned status 0x%02x, " 521 "aborting.\n", status); 522 return -EINVAL; 523 } 524 525 err = mthca_ENABLE_LAM(mdev, &status); 526 if (err) { 527 mthca_err(mdev, "ENABLE_LAM command failed, aborting.\n"); 528 return err; 529 } 530 if (status == MTHCA_CMD_STAT_LAM_NOT_PRE) { 531 mthca_dbg(mdev, "No HCA-attached memory (running in MemFree mode)\n"); 532 mdev->mthca_flags |= MTHCA_FLAG_NO_LAM; 533 } else if (status) { 534 mthca_err(mdev, "ENABLE_LAM returned status 0x%02x, " 535 "aborting.\n", status); 536 return -EINVAL; 537 } 538 539 err = mthca_load_fw(mdev); 540 if (err) { 541 mthca_err(mdev, "Failed to start FW, aborting.\n"); 542 goto err_disable; 543 } 544 545 err = mthca_dev_lim(mdev, &dev_lim); 546 if (err) { 547 mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n"); 548 goto err_stop_fw; 549 } 550 551 profile = default_profile; 552 profile.num_uar = dev_lim.uar_size / PAGE_SIZE; 553 profile.num_udav = 0; 554 555 icm_size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca); 556 if ((int) icm_size < 0) { 557 err = icm_size; 558 goto err_stop_fw; 559 } 560 561 err = mthca_init_icm(mdev, &dev_lim, &init_hca, icm_size); 562 if (err) 563 goto err_stop_fw; 564 565 err = mthca_INIT_HCA(mdev, &init_hca, &status); 566 if (err) { 567 mthca_err(mdev, "INIT_HCA command failed, aborting.\n"); 568 goto err_free_icm; 569 } 570 if (status) { 571 mthca_err(mdev, "INIT_HCA returned status 0x%02x, " 572 "aborting.\n", status); 573 err = -EINVAL; 574 goto err_free_icm; 575 } 576 577 err = mthca_QUERY_ADAPTER(mdev, &adapter, &status); 578 if (err) { 579 mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n"); 580 goto err_free_icm; 581 } 582 if (status) { 583 mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, " 584 "aborting.\n", status); 585 err = -EINVAL; 586 goto err_free_icm; 587 } 588 589 mdev->eq_table.inta_pin = adapter.inta_pin; 590 mdev->rev_id = adapter.revision_id; 591 592 return 0; 593 594 err_free_icm: 595 mthca_free_icm_table(mdev, mdev->cq_table.table); 596 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table); 597 mthca_free_icm_table(mdev, mdev->qp_table.qp_table); 598 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table); 599 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table); 600 mthca_unmap_eq_icm(mdev); 601 602 mthca_UNMAP_ICM_AUX(mdev, &status); 603 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm); 604 605 err_stop_fw: 606 mthca_UNMAP_FA(mdev, &status); 607 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm); 608 609 err_disable: 610 if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM)) 611 mthca_DISABLE_LAM(mdev, &status); 612 613 return err; 614 } 615 616 static int __devinit mthca_init_hca(struct mthca_dev *mdev) 617 { 618 if (mthca_is_memfree(mdev)) 619 return mthca_init_arbel(mdev); 620 else 621 return mthca_init_tavor(mdev); 622 } 623 624 static int __devinit mthca_setup_hca(struct mthca_dev *dev) 625 { 626 int err; 627 u8 status; 628 629 MTHCA_INIT_DOORBELL_LOCK(&dev->doorbell_lock); 630 631 err = mthca_init_uar_table(dev); 632 if (err) { 633 mthca_err(dev, "Failed to initialize " 634 "user access region table, aborting.\n"); 635 return err; 636 } 637 638 err = mthca_uar_alloc(dev, &dev->driver_uar); 639 if (err) { 640 mthca_err(dev, "Failed to allocate driver access region, " 641 "aborting.\n"); 642 goto err_uar_table_free; 643 } 644 645 dev->kar = ioremap(dev->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE); 646 if (!dev->kar) { 647 mthca_err(dev, "Couldn't map kernel access region, " 648 "aborting.\n"); 649 err = -ENOMEM; 650 goto err_uar_free; 651 } 652 653 err = mthca_init_pd_table(dev); 654 if (err) { 655 mthca_err(dev, "Failed to initialize " 656 "protection domain table, aborting.\n"); 657 goto err_kar_unmap; 658 } 659 660 err = mthca_init_mr_table(dev); 661 if (err) { 662 mthca_err(dev, "Failed to initialize " 663 "memory region table, aborting.\n"); 664 goto err_pd_table_free; 665 } 666 667 err = mthca_pd_alloc(dev, &dev->driver_pd); 668 if (err) { 669 mthca_err(dev, "Failed to create driver PD, " 670 "aborting.\n"); 671 goto err_mr_table_free; 672 } 673 674 err = mthca_init_eq_table(dev); 675 if (err) { 676 mthca_err(dev, "Failed to initialize " 677 "event queue table, aborting.\n"); 678 goto err_pd_free; 679 } 680 681 err = mthca_cmd_use_events(dev); 682 if (err) { 683 mthca_err(dev, "Failed to switch to event-driven " 684 "firmware commands, aborting.\n"); 685 goto err_eq_table_free; 686 } 687 688 err = mthca_NOP(dev, &status); 689 if (err || status) { 690 mthca_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting.\n", 691 dev->mthca_flags & MTHCA_FLAG_MSI_X ? 692 dev->eq_table.eq[MTHCA_EQ_CMD].msi_x_vector : 693 dev->pdev->irq); 694 if (dev->mthca_flags & (MTHCA_FLAG_MSI | MTHCA_FLAG_MSI_X)) 695 mthca_err(dev, "Try again with MSI/MSI-X disabled.\n"); 696 else 697 mthca_err(dev, "BIOS or ACPI interrupt routing problem?\n"); 698 699 goto err_cmd_poll; 700 } 701 702 mthca_dbg(dev, "NOP command IRQ test passed\n"); 703 704 err = mthca_init_cq_table(dev); 705 if (err) { 706 mthca_err(dev, "Failed to initialize " 707 "completion queue table, aborting.\n"); 708 goto err_cmd_poll; 709 } 710 711 err = mthca_init_qp_table(dev); 712 if (err) { 713 mthca_err(dev, "Failed to initialize " 714 "queue pair table, aborting.\n"); 715 goto err_cq_table_free; 716 } 717 718 err = mthca_init_av_table(dev); 719 if (err) { 720 mthca_err(dev, "Failed to initialize " 721 "address vector table, aborting.\n"); 722 goto err_qp_table_free; 723 } 724 725 err = mthca_init_mcg_table(dev); 726 if (err) { 727 mthca_err(dev, "Failed to initialize " 728 "multicast group table, aborting.\n"); 729 goto err_av_table_free; 730 } 731 732 return 0; 733 734 err_av_table_free: 735 mthca_cleanup_av_table(dev); 736 737 err_qp_table_free: 738 mthca_cleanup_qp_table(dev); 739 740 err_cq_table_free: 741 mthca_cleanup_cq_table(dev); 742 743 err_cmd_poll: 744 mthca_cmd_use_polling(dev); 745 746 err_eq_table_free: 747 mthca_cleanup_eq_table(dev); 748 749 err_pd_free: 750 mthca_pd_free(dev, &dev->driver_pd); 751 752 err_mr_table_free: 753 mthca_cleanup_mr_table(dev); 754 755 err_pd_table_free: 756 mthca_cleanup_pd_table(dev); 757 758 err_kar_unmap: 759 iounmap(dev->kar); 760 761 err_uar_free: 762 mthca_uar_free(dev, &dev->driver_uar); 763 764 err_uar_table_free: 765 mthca_cleanup_uar_table(dev); 766 return err; 767 } 768 769 static int __devinit mthca_request_regions(struct pci_dev *pdev, 770 int ddr_hidden) 771 { 772 int err; 773 774 /* 775 * We can't just use pci_request_regions() because the MSI-X 776 * table is right in the middle of the first BAR. If we did 777 * pci_request_region and grab all of the first BAR, then 778 * setting up MSI-X would fail, since the PCI core wants to do 779 * request_mem_region on the MSI-X vector table. 780 * 781 * So just request what we need right now, and request any 782 * other regions we need when setting up EQs. 783 */ 784 if (!request_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, 785 MTHCA_HCR_SIZE, DRV_NAME)) 786 return -EBUSY; 787 788 err = pci_request_region(pdev, 2, DRV_NAME); 789 if (err) 790 goto err_bar2_failed; 791 792 if (!ddr_hidden) { 793 err = pci_request_region(pdev, 4, DRV_NAME); 794 if (err) 795 goto err_bar4_failed; 796 } 797 798 return 0; 799 800 err_bar4_failed: 801 pci_release_region(pdev, 2); 802 803 err_bar2_failed: 804 release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, 805 MTHCA_HCR_SIZE); 806 807 return err; 808 } 809 810 static void mthca_release_regions(struct pci_dev *pdev, 811 int ddr_hidden) 812 { 813 if (!ddr_hidden) 814 pci_release_region(pdev, 4); 815 816 pci_release_region(pdev, 2); 817 818 release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, 819 MTHCA_HCR_SIZE); 820 } 821 822 static int __devinit mthca_enable_msi_x(struct mthca_dev *mdev) 823 { 824 struct msix_entry entries[3]; 825 int err; 826 827 entries[0].entry = 0; 828 entries[1].entry = 1; 829 entries[2].entry = 2; 830 831 err = pci_enable_msix(mdev->pdev, entries, ARRAY_SIZE(entries)); 832 if (err) { 833 if (err > 0) 834 mthca_info(mdev, "Only %d MSI-X vectors available, " 835 "not using MSI-X\n", err); 836 return err; 837 } 838 839 mdev->eq_table.eq[MTHCA_EQ_COMP ].msi_x_vector = entries[0].vector; 840 mdev->eq_table.eq[MTHCA_EQ_ASYNC].msi_x_vector = entries[1].vector; 841 mdev->eq_table.eq[MTHCA_EQ_CMD ].msi_x_vector = entries[2].vector; 842 843 return 0; 844 } 845 846 static void mthca_close_hca(struct mthca_dev *mdev) 847 { 848 u8 status; 849 850 mthca_CLOSE_HCA(mdev, 0, &status); 851 852 if (mthca_is_memfree(mdev)) { 853 mthca_free_icm_table(mdev, mdev->cq_table.table); 854 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table); 855 mthca_free_icm_table(mdev, mdev->qp_table.qp_table); 856 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table); 857 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table); 858 mthca_unmap_eq_icm(mdev); 859 860 mthca_UNMAP_ICM_AUX(mdev, &status); 861 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm); 862 863 mthca_UNMAP_FA(mdev, &status); 864 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm); 865 866 if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM)) 867 mthca_DISABLE_LAM(mdev, &status); 868 } else 869 mthca_SYS_DIS(mdev, &status); 870 } 871 872 static int __devinit mthca_init_one(struct pci_dev *pdev, 873 const struct pci_device_id *id) 874 { 875 static int mthca_version_printed = 0; 876 static int mthca_memfree_warned = 0; 877 int ddr_hidden = 0; 878 int err; 879 struct mthca_dev *mdev; 880 881 if (!mthca_version_printed) { 882 printk(KERN_INFO "%s", mthca_version); 883 ++mthca_version_printed; 884 } 885 886 printk(KERN_INFO PFX "Initializing %s (%s)\n", 887 pci_pretty_name(pdev), pci_name(pdev)); 888 889 err = pci_enable_device(pdev); 890 if (err) { 891 dev_err(&pdev->dev, "Cannot enable PCI device, " 892 "aborting.\n"); 893 return err; 894 } 895 896 /* 897 * Check for BARs. We expect 0: 1MB, 2: 8MB, 4: DDR (may not 898 * be present) 899 */ 900 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) || 901 pci_resource_len(pdev, 0) != 1 << 20) { 902 dev_err(&pdev->dev, "Missing DCS, aborting."); 903 err = -ENODEV; 904 goto err_disable_pdev; 905 } 906 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM) || 907 pci_resource_len(pdev, 2) != 1 << 23) { 908 dev_err(&pdev->dev, "Missing UAR, aborting."); 909 err = -ENODEV; 910 goto err_disable_pdev; 911 } 912 if (!(pci_resource_flags(pdev, 4) & IORESOURCE_MEM)) 913 ddr_hidden = 1; 914 915 err = mthca_request_regions(pdev, ddr_hidden); 916 if (err) { 917 dev_err(&pdev->dev, "Cannot obtain PCI resources, " 918 "aborting.\n"); 919 goto err_disable_pdev; 920 } 921 922 pci_set_master(pdev); 923 924 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); 925 if (err) { 926 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n"); 927 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 928 if (err) { 929 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n"); 930 goto err_free_res; 931 } 932 } 933 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); 934 if (err) { 935 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit " 936 "consistent PCI DMA mask.\n"); 937 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); 938 if (err) { 939 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, " 940 "aborting.\n"); 941 goto err_free_res; 942 } 943 } 944 945 mdev = (struct mthca_dev *) ib_alloc_device(sizeof *mdev); 946 if (!mdev) { 947 dev_err(&pdev->dev, "Device struct alloc failed, " 948 "aborting.\n"); 949 err = -ENOMEM; 950 goto err_free_res; 951 } 952 953 mdev->pdev = pdev; 954 mdev->hca_type = id->driver_data; 955 956 if (mthca_is_memfree(mdev) && !mthca_memfree_warned++) 957 mthca_warn(mdev, "Warning: native MT25208 mode support is incomplete. " 958 "Your HCA may not work properly.\n"); 959 960 if (ddr_hidden) 961 mdev->mthca_flags |= MTHCA_FLAG_DDR_HIDDEN; 962 963 /* 964 * Now reset the HCA before we touch the PCI capabilities or 965 * attempt a firmware command, since a boot ROM may have left 966 * the HCA in an undefined state. 967 */ 968 err = mthca_reset(mdev); 969 if (err) { 970 mthca_err(mdev, "Failed to reset HCA, aborting.\n"); 971 goto err_free_dev; 972 } 973 974 if (msi_x && !mthca_enable_msi_x(mdev)) 975 mdev->mthca_flags |= MTHCA_FLAG_MSI_X; 976 if (msi && !(mdev->mthca_flags & MTHCA_FLAG_MSI_X) && 977 !pci_enable_msi(pdev)) 978 mdev->mthca_flags |= MTHCA_FLAG_MSI; 979 980 sema_init(&mdev->cmd.hcr_sem, 1); 981 sema_init(&mdev->cmd.poll_sem, 1); 982 mdev->cmd.use_events = 0; 983 984 mdev->hcr = ioremap(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, MTHCA_HCR_SIZE); 985 if (!mdev->hcr) { 986 mthca_err(mdev, "Couldn't map command register, " 987 "aborting.\n"); 988 err = -ENOMEM; 989 goto err_free_dev; 990 } 991 992 err = mthca_tune_pci(mdev); 993 if (err) 994 goto err_iounmap; 995 996 err = mthca_init_hca(mdev); 997 if (err) 998 goto err_iounmap; 999 1000 err = mthca_setup_hca(mdev); 1001 if (err) 1002 goto err_close; 1003 1004 err = mthca_register_device(mdev); 1005 if (err) 1006 goto err_cleanup; 1007 1008 err = mthca_create_agents(mdev); 1009 if (err) 1010 goto err_unregister; 1011 1012 pci_set_drvdata(pdev, mdev); 1013 1014 return 0; 1015 1016 err_unregister: 1017 mthca_unregister_device(mdev); 1018 1019 err_cleanup: 1020 mthca_cleanup_mcg_table(mdev); 1021 mthca_cleanup_av_table(mdev); 1022 mthca_cleanup_qp_table(mdev); 1023 mthca_cleanup_cq_table(mdev); 1024 mthca_cmd_use_polling(mdev); 1025 mthca_cleanup_eq_table(mdev); 1026 1027 mthca_pd_free(mdev, &mdev->driver_pd); 1028 1029 mthca_cleanup_mr_table(mdev); 1030 mthca_cleanup_pd_table(mdev); 1031 mthca_cleanup_uar_table(mdev); 1032 1033 err_close: 1034 mthca_close_hca(mdev); 1035 1036 err_iounmap: 1037 iounmap(mdev->hcr); 1038 1039 err_free_dev: 1040 if (mdev->mthca_flags & MTHCA_FLAG_MSI_X) 1041 pci_disable_msix(pdev); 1042 if (mdev->mthca_flags & MTHCA_FLAG_MSI) 1043 pci_disable_msi(pdev); 1044 1045 ib_dealloc_device(&mdev->ib_dev); 1046 1047 err_free_res: 1048 mthca_release_regions(pdev, ddr_hidden); 1049 1050 err_disable_pdev: 1051 pci_disable_device(pdev); 1052 pci_set_drvdata(pdev, NULL); 1053 return err; 1054 } 1055 1056 static void __devexit mthca_remove_one(struct pci_dev *pdev) 1057 { 1058 struct mthca_dev *mdev = pci_get_drvdata(pdev); 1059 u8 status; 1060 int p; 1061 1062 if (mdev) { 1063 mthca_free_agents(mdev); 1064 mthca_unregister_device(mdev); 1065 1066 for (p = 1; p <= mdev->limits.num_ports; ++p) 1067 mthca_CLOSE_IB(mdev, p, &status); 1068 1069 mthca_cleanup_mcg_table(mdev); 1070 mthca_cleanup_av_table(mdev); 1071 mthca_cleanup_qp_table(mdev); 1072 mthca_cleanup_cq_table(mdev); 1073 mthca_cmd_use_polling(mdev); 1074 mthca_cleanup_eq_table(mdev); 1075 1076 mthca_pd_free(mdev, &mdev->driver_pd); 1077 1078 mthca_cleanup_mr_table(mdev); 1079 mthca_cleanup_pd_table(mdev); 1080 1081 iounmap(mdev->kar); 1082 mthca_uar_free(mdev, &mdev->driver_uar); 1083 mthca_cleanup_uar_table(mdev); 1084 1085 mthca_close_hca(mdev); 1086 1087 iounmap(mdev->hcr); 1088 1089 if (mdev->mthca_flags & MTHCA_FLAG_MSI_X) 1090 pci_disable_msix(pdev); 1091 if (mdev->mthca_flags & MTHCA_FLAG_MSI) 1092 pci_disable_msi(pdev); 1093 1094 ib_dealloc_device(&mdev->ib_dev); 1095 mthca_release_regions(pdev, mdev->mthca_flags & 1096 MTHCA_FLAG_DDR_HIDDEN); 1097 pci_disable_device(pdev); 1098 pci_set_drvdata(pdev, NULL); 1099 } 1100 } 1101 1102 static struct pci_device_id mthca_pci_table[] = { 1103 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR), 1104 .driver_data = TAVOR }, 1105 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_TAVOR), 1106 .driver_data = TAVOR }, 1107 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT), 1108 .driver_data = ARBEL_COMPAT }, 1109 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT), 1110 .driver_data = ARBEL_COMPAT }, 1111 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL), 1112 .driver_data = ARBEL_NATIVE }, 1113 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL), 1114 .driver_data = ARBEL_NATIVE }, 1115 { 0, } 1116 }; 1117 1118 MODULE_DEVICE_TABLE(pci, mthca_pci_table); 1119 1120 static struct pci_driver mthca_driver = { 1121 .name = "ib_mthca", 1122 .id_table = mthca_pci_table, 1123 .probe = mthca_init_one, 1124 .remove = __devexit_p(mthca_remove_one) 1125 }; 1126 1127 static int __init mthca_init(void) 1128 { 1129 int ret; 1130 1131 ret = pci_register_driver(&mthca_driver); 1132 return ret < 0 ? ret : 0; 1133 } 1134 1135 static void __exit mthca_cleanup(void) 1136 { 1137 pci_unregister_driver(&mthca_driver); 1138 } 1139 1140 module_init(mthca_init); 1141 module_exit(mthca_cleanup); 1142