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->mthca_flags & MTHCA_FLAG_PCIE)) 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->mthca_flags & MTHCA_FLAG_PCIE) 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 MTHCA_MTT_SEG_SIZE, 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->qp_table.rdb_table = mthca_alloc_icm_table(mdev, init_hca->rdb_base, 433 MTHCA_RDB_ENTRY_SIZE, 434 mdev->limits.num_qps << 435 mdev->qp_table.rdb_shift, 436 0, 0); 437 if (!mdev->qp_table.rdb_table) { 438 mthca_err(mdev, "Failed to map RDB context memory, aborting\n"); 439 err = -ENOMEM; 440 goto err_unmap_eqp; 441 } 442 443 mdev->cq_table.table = mthca_alloc_icm_table(mdev, init_hca->cqc_base, 444 dev_lim->cqc_entry_sz, 445 mdev->limits.num_cqs, 446 mdev->limits.reserved_cqs, 0); 447 if (!mdev->cq_table.table) { 448 mthca_err(mdev, "Failed to map CQ context memory, aborting.\n"); 449 err = -ENOMEM; 450 goto err_unmap_rdb; 451 } 452 453 /* 454 * It's not strictly required, but for simplicity just map the 455 * whole multicast group table now. The table isn't very big 456 * and it's a lot easier than trying to track ref counts. 457 */ 458 mdev->mcg_table.table = mthca_alloc_icm_table(mdev, init_hca->mc_base, 459 MTHCA_MGM_ENTRY_SIZE, 460 mdev->limits.num_mgms + 461 mdev->limits.num_amgms, 462 mdev->limits.num_mgms + 463 mdev->limits.num_amgms, 464 0); 465 if (!mdev->mcg_table.table) { 466 mthca_err(mdev, "Failed to map MCG context memory, aborting.\n"); 467 err = -ENOMEM; 468 goto err_unmap_cq; 469 } 470 471 return 0; 472 473 err_unmap_cq: 474 mthca_free_icm_table(mdev, mdev->cq_table.table); 475 476 err_unmap_rdb: 477 mthca_free_icm_table(mdev, mdev->qp_table.rdb_table); 478 479 err_unmap_eqp: 480 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table); 481 482 err_unmap_qp: 483 mthca_free_icm_table(mdev, mdev->qp_table.qp_table); 484 485 err_unmap_mpt: 486 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table); 487 488 err_unmap_mtt: 489 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table); 490 491 err_unmap_eq: 492 mthca_unmap_eq_icm(mdev); 493 494 err_unmap_aux: 495 mthca_UNMAP_ICM_AUX(mdev, &status); 496 497 err_free_aux: 498 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm); 499 500 return err; 501 } 502 503 static int __devinit mthca_init_arbel(struct mthca_dev *mdev) 504 { 505 struct mthca_dev_lim dev_lim; 506 struct mthca_profile profile; 507 struct mthca_init_hca_param init_hca; 508 struct mthca_adapter adapter; 509 u64 icm_size; 510 u8 status; 511 int err; 512 513 err = mthca_QUERY_FW(mdev, &status); 514 if (err) { 515 mthca_err(mdev, "QUERY_FW command failed, aborting.\n"); 516 return err; 517 } 518 if (status) { 519 mthca_err(mdev, "QUERY_FW returned status 0x%02x, " 520 "aborting.\n", status); 521 return -EINVAL; 522 } 523 524 err = mthca_ENABLE_LAM(mdev, &status); 525 if (err) { 526 mthca_err(mdev, "ENABLE_LAM command failed, aborting.\n"); 527 return err; 528 } 529 if (status == MTHCA_CMD_STAT_LAM_NOT_PRE) { 530 mthca_dbg(mdev, "No HCA-attached memory (running in MemFree mode)\n"); 531 mdev->mthca_flags |= MTHCA_FLAG_NO_LAM; 532 } else if (status) { 533 mthca_err(mdev, "ENABLE_LAM returned status 0x%02x, " 534 "aborting.\n", status); 535 return -EINVAL; 536 } 537 538 err = mthca_load_fw(mdev); 539 if (err) { 540 mthca_err(mdev, "Failed to start FW, aborting.\n"); 541 goto err_disable; 542 } 543 544 err = mthca_dev_lim(mdev, &dev_lim); 545 if (err) { 546 mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n"); 547 goto err_stop_fw; 548 } 549 550 profile = default_profile; 551 profile.num_uar = dev_lim.uar_size / PAGE_SIZE; 552 profile.num_udav = 0; 553 554 icm_size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca); 555 if ((int) icm_size < 0) { 556 err = icm_size; 557 goto err_stop_fw; 558 } 559 560 err = mthca_init_icm(mdev, &dev_lim, &init_hca, icm_size); 561 if (err) 562 goto err_stop_fw; 563 564 err = mthca_INIT_HCA(mdev, &init_hca, &status); 565 if (err) { 566 mthca_err(mdev, "INIT_HCA command failed, aborting.\n"); 567 goto err_free_icm; 568 } 569 if (status) { 570 mthca_err(mdev, "INIT_HCA returned status 0x%02x, " 571 "aborting.\n", status); 572 err = -EINVAL; 573 goto err_free_icm; 574 } 575 576 err = mthca_QUERY_ADAPTER(mdev, &adapter, &status); 577 if (err) { 578 mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n"); 579 goto err_free_icm; 580 } 581 if (status) { 582 mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, " 583 "aborting.\n", status); 584 err = -EINVAL; 585 goto err_free_icm; 586 } 587 588 mdev->eq_table.inta_pin = adapter.inta_pin; 589 mdev->rev_id = adapter.revision_id; 590 591 return 0; 592 593 err_free_icm: 594 mthca_free_icm_table(mdev, mdev->cq_table.table); 595 mthca_free_icm_table(mdev, mdev->qp_table.rdb_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.rdb_table); 855 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table); 856 mthca_free_icm_table(mdev, mdev->qp_table.qp_table); 857 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table); 858 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table); 859 mthca_unmap_eq_icm(mdev); 860 861 mthca_UNMAP_ICM_AUX(mdev, &status); 862 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm); 863 864 mthca_UNMAP_FA(mdev, &status); 865 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm); 866 867 if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM)) 868 mthca_DISABLE_LAM(mdev, &status); 869 } else 870 mthca_SYS_DIS(mdev, &status); 871 } 872 873 /* Types of supported HCA */ 874 enum { 875 TAVOR, /* MT23108 */ 876 ARBEL_COMPAT, /* MT25208 in Tavor compat mode */ 877 ARBEL_NATIVE, /* MT25208 with extended features */ 878 SINAI /* MT25204 */ 879 }; 880 881 #define MTHCA_FW_VER(major, minor, subminor) \ 882 (((u64) (major) << 32) | ((u64) (minor) << 16) | (u64) (subminor)) 883 884 static struct { 885 u64 latest_fw; 886 int is_memfree; 887 int is_pcie; 888 } mthca_hca_table[] = { 889 [TAVOR] = { .latest_fw = MTHCA_FW_VER(3, 3, 2), .is_memfree = 0, .is_pcie = 0 }, 890 [ARBEL_COMPAT] = { .latest_fw = MTHCA_FW_VER(4, 6, 2), .is_memfree = 0, .is_pcie = 1 }, 891 [ARBEL_NATIVE] = { .latest_fw = MTHCA_FW_VER(5, 0, 1), .is_memfree = 1, .is_pcie = 1 }, 892 [SINAI] = { .latest_fw = MTHCA_FW_VER(1, 0, 1), .is_memfree = 1, .is_pcie = 1 } 893 }; 894 895 static int __devinit mthca_init_one(struct pci_dev *pdev, 896 const struct pci_device_id *id) 897 { 898 static int mthca_version_printed = 0; 899 int ddr_hidden = 0; 900 int err; 901 struct mthca_dev *mdev; 902 903 if (!mthca_version_printed) { 904 printk(KERN_INFO "%s", mthca_version); 905 ++mthca_version_printed; 906 } 907 908 printk(KERN_INFO PFX "Initializing %s (%s)\n", 909 pci_pretty_name(pdev), pci_name(pdev)); 910 911 if (id->driver_data >= ARRAY_SIZE(mthca_hca_table)) { 912 printk(KERN_ERR PFX "%s (%s) has invalid driver data %lx\n", 913 pci_pretty_name(pdev), pci_name(pdev), id->driver_data); 914 return -ENODEV; 915 } 916 917 err = pci_enable_device(pdev); 918 if (err) { 919 dev_err(&pdev->dev, "Cannot enable PCI device, " 920 "aborting.\n"); 921 return err; 922 } 923 924 /* 925 * Check for BARs. We expect 0: 1MB, 2: 8MB, 4: DDR (may not 926 * be present) 927 */ 928 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) || 929 pci_resource_len(pdev, 0) != 1 << 20) { 930 dev_err(&pdev->dev, "Missing DCS, aborting."); 931 err = -ENODEV; 932 goto err_disable_pdev; 933 } 934 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM) || 935 pci_resource_len(pdev, 2) != 1 << 23) { 936 dev_err(&pdev->dev, "Missing UAR, aborting."); 937 err = -ENODEV; 938 goto err_disable_pdev; 939 } 940 if (!(pci_resource_flags(pdev, 4) & IORESOURCE_MEM)) 941 ddr_hidden = 1; 942 943 err = mthca_request_regions(pdev, ddr_hidden); 944 if (err) { 945 dev_err(&pdev->dev, "Cannot obtain PCI resources, " 946 "aborting.\n"); 947 goto err_disable_pdev; 948 } 949 950 pci_set_master(pdev); 951 952 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); 953 if (err) { 954 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n"); 955 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 956 if (err) { 957 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n"); 958 goto err_free_res; 959 } 960 } 961 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); 962 if (err) { 963 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit " 964 "consistent PCI DMA mask.\n"); 965 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); 966 if (err) { 967 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, " 968 "aborting.\n"); 969 goto err_free_res; 970 } 971 } 972 973 mdev = (struct mthca_dev *) ib_alloc_device(sizeof *mdev); 974 if (!mdev) { 975 dev_err(&pdev->dev, "Device struct alloc failed, " 976 "aborting.\n"); 977 err = -ENOMEM; 978 goto err_free_res; 979 } 980 981 mdev->pdev = pdev; 982 983 if (ddr_hidden) 984 mdev->mthca_flags |= MTHCA_FLAG_DDR_HIDDEN; 985 if (mthca_hca_table[id->driver_data].is_memfree) 986 mdev->mthca_flags |= MTHCA_FLAG_MEMFREE; 987 if (mthca_hca_table[id->driver_data].is_pcie) 988 mdev->mthca_flags |= MTHCA_FLAG_PCIE; 989 990 /* 991 * Now reset the HCA before we touch the PCI capabilities or 992 * attempt a firmware command, since a boot ROM may have left 993 * the HCA in an undefined state. 994 */ 995 err = mthca_reset(mdev); 996 if (err) { 997 mthca_err(mdev, "Failed to reset HCA, aborting.\n"); 998 goto err_free_dev; 999 } 1000 1001 if (msi_x && !mthca_enable_msi_x(mdev)) 1002 mdev->mthca_flags |= MTHCA_FLAG_MSI_X; 1003 if (msi && !(mdev->mthca_flags & MTHCA_FLAG_MSI_X) && 1004 !pci_enable_msi(pdev)) 1005 mdev->mthca_flags |= MTHCA_FLAG_MSI; 1006 1007 sema_init(&mdev->cmd.hcr_sem, 1); 1008 sema_init(&mdev->cmd.poll_sem, 1); 1009 mdev->cmd.use_events = 0; 1010 1011 mdev->hcr = ioremap(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, MTHCA_HCR_SIZE); 1012 if (!mdev->hcr) { 1013 mthca_err(mdev, "Couldn't map command register, " 1014 "aborting.\n"); 1015 err = -ENOMEM; 1016 goto err_free_dev; 1017 } 1018 1019 err = mthca_tune_pci(mdev); 1020 if (err) 1021 goto err_iounmap; 1022 1023 err = mthca_init_hca(mdev); 1024 if (err) 1025 goto err_iounmap; 1026 1027 if (mdev->fw_ver < mthca_hca_table[id->driver_data].latest_fw) { 1028 mthca_warn(mdev, "HCA FW version %x.%x.%x is old (%x.%x.%x is current).\n", 1029 (int) (mdev->fw_ver >> 32), (int) (mdev->fw_ver >> 16) & 0xffff, 1030 (int) (mdev->fw_ver & 0xffff), 1031 (int) (mthca_hca_table[id->driver_data].latest_fw >> 32), 1032 (int) (mthca_hca_table[id->driver_data].latest_fw >> 16) & 0xffff, 1033 (int) (mthca_hca_table[id->driver_data].latest_fw & 0xffff)); 1034 mthca_warn(mdev, "If you have problems, try updating your HCA FW.\n"); 1035 } 1036 1037 err = mthca_setup_hca(mdev); 1038 if (err) 1039 goto err_close; 1040 1041 err = mthca_register_device(mdev); 1042 if (err) 1043 goto err_cleanup; 1044 1045 err = mthca_create_agents(mdev); 1046 if (err) 1047 goto err_unregister; 1048 1049 pci_set_drvdata(pdev, mdev); 1050 1051 return 0; 1052 1053 err_unregister: 1054 mthca_unregister_device(mdev); 1055 1056 err_cleanup: 1057 mthca_cleanup_mcg_table(mdev); 1058 mthca_cleanup_av_table(mdev); 1059 mthca_cleanup_qp_table(mdev); 1060 mthca_cleanup_cq_table(mdev); 1061 mthca_cmd_use_polling(mdev); 1062 mthca_cleanup_eq_table(mdev); 1063 1064 mthca_pd_free(mdev, &mdev->driver_pd); 1065 1066 mthca_cleanup_mr_table(mdev); 1067 mthca_cleanup_pd_table(mdev); 1068 mthca_cleanup_uar_table(mdev); 1069 1070 err_close: 1071 mthca_close_hca(mdev); 1072 1073 err_iounmap: 1074 iounmap(mdev->hcr); 1075 1076 err_free_dev: 1077 if (mdev->mthca_flags & MTHCA_FLAG_MSI_X) 1078 pci_disable_msix(pdev); 1079 if (mdev->mthca_flags & MTHCA_FLAG_MSI) 1080 pci_disable_msi(pdev); 1081 1082 ib_dealloc_device(&mdev->ib_dev); 1083 1084 err_free_res: 1085 mthca_release_regions(pdev, ddr_hidden); 1086 1087 err_disable_pdev: 1088 pci_disable_device(pdev); 1089 pci_set_drvdata(pdev, NULL); 1090 return err; 1091 } 1092 1093 static void __devexit mthca_remove_one(struct pci_dev *pdev) 1094 { 1095 struct mthca_dev *mdev = pci_get_drvdata(pdev); 1096 u8 status; 1097 int p; 1098 1099 if (mdev) { 1100 mthca_free_agents(mdev); 1101 mthca_unregister_device(mdev); 1102 1103 for (p = 1; p <= mdev->limits.num_ports; ++p) 1104 mthca_CLOSE_IB(mdev, p, &status); 1105 1106 mthca_cleanup_mcg_table(mdev); 1107 mthca_cleanup_av_table(mdev); 1108 mthca_cleanup_qp_table(mdev); 1109 mthca_cleanup_cq_table(mdev); 1110 mthca_cmd_use_polling(mdev); 1111 mthca_cleanup_eq_table(mdev); 1112 1113 mthca_pd_free(mdev, &mdev->driver_pd); 1114 1115 mthca_cleanup_mr_table(mdev); 1116 mthca_cleanup_pd_table(mdev); 1117 1118 iounmap(mdev->kar); 1119 mthca_uar_free(mdev, &mdev->driver_uar); 1120 mthca_cleanup_uar_table(mdev); 1121 1122 mthca_close_hca(mdev); 1123 1124 iounmap(mdev->hcr); 1125 1126 if (mdev->mthca_flags & MTHCA_FLAG_MSI_X) 1127 pci_disable_msix(pdev); 1128 if (mdev->mthca_flags & MTHCA_FLAG_MSI) 1129 pci_disable_msi(pdev); 1130 1131 ib_dealloc_device(&mdev->ib_dev); 1132 mthca_release_regions(pdev, mdev->mthca_flags & 1133 MTHCA_FLAG_DDR_HIDDEN); 1134 pci_disable_device(pdev); 1135 pci_set_drvdata(pdev, NULL); 1136 } 1137 } 1138 1139 static struct pci_device_id mthca_pci_table[] = { 1140 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR), 1141 .driver_data = TAVOR }, 1142 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_TAVOR), 1143 .driver_data = TAVOR }, 1144 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT), 1145 .driver_data = ARBEL_COMPAT }, 1146 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT), 1147 .driver_data = ARBEL_COMPAT }, 1148 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL), 1149 .driver_data = ARBEL_NATIVE }, 1150 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL), 1151 .driver_data = ARBEL_NATIVE }, 1152 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_SINAI), 1153 .driver_data = SINAI }, 1154 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_SINAI), 1155 .driver_data = SINAI }, 1156 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_SINAI_OLD), 1157 .driver_data = SINAI }, 1158 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_SINAI_OLD), 1159 .driver_data = SINAI }, 1160 { 0, } 1161 }; 1162 1163 MODULE_DEVICE_TABLE(pci, mthca_pci_table); 1164 1165 static struct pci_driver mthca_driver = { 1166 .name = "ib_mthca", 1167 .id_table = mthca_pci_table, 1168 .probe = mthca_init_one, 1169 .remove = __devexit_p(mthca_remove_one) 1170 }; 1171 1172 static int __init mthca_init(void) 1173 { 1174 int ret; 1175 1176 ret = pci_register_driver(&mthca_driver); 1177 return ret < 0 ? ret : 0; 1178 } 1179 1180 static void __exit mthca_cleanup(void) 1181 { 1182 pci_unregister_driver(&mthca_driver); 1183 } 1184 1185 module_init(mthca_init); 1186 module_exit(mthca_cleanup); 1187