1 /* 2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 4 * Copyright (c) 2005 Mellanox Technologies. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 * 34 * $Id: mthca_main.c 1396 2004-12-28 04:10:27Z roland $ 35 */ 36 37 #include <linux/config.h> 38 #include <linux/module.h> 39 #include <linux/init.h> 40 #include <linux/errno.h> 41 #include <linux/pci.h> 42 #include <linux/interrupt.h> 43 44 #include "mthca_dev.h" 45 #include "mthca_config_reg.h" 46 #include "mthca_cmd.h" 47 #include "mthca_profile.h" 48 #include "mthca_memfree.h" 49 50 MODULE_AUTHOR("Roland Dreier"); 51 MODULE_DESCRIPTION("Mellanox InfiniBand HCA low-level driver"); 52 MODULE_LICENSE("Dual BSD/GPL"); 53 MODULE_VERSION(DRV_VERSION); 54 55 #ifdef CONFIG_PCI_MSI 56 57 static int msi_x = 0; 58 module_param(msi_x, int, 0444); 59 MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero"); 60 61 static int msi = 0; 62 module_param(msi, int, 0444); 63 MODULE_PARM_DESC(msi, "attempt to use MSI if nonzero"); 64 65 #else /* CONFIG_PCI_MSI */ 66 67 #define msi_x (0) 68 #define msi (0) 69 70 #endif /* CONFIG_PCI_MSI */ 71 72 static const char mthca_version[] __devinitdata = 73 DRV_NAME ": Mellanox InfiniBand HCA driver v" 74 DRV_VERSION " (" DRV_RELDATE ")\n"; 75 76 static struct mthca_profile default_profile = { 77 .num_qp = 1 << 16, 78 .rdb_per_qp = 4, 79 .num_cq = 1 << 16, 80 .num_mcg = 1 << 13, 81 .num_mpt = 1 << 17, 82 .num_mtt = 1 << 20, 83 .num_udav = 1 << 15, /* Tavor only */ 84 .fmr_reserved_mtts = 1 << 18, /* Tavor only */ 85 .uarc_size = 1 << 18, /* Arbel only */ 86 }; 87 88 static int __devinit mthca_tune_pci(struct mthca_dev *mdev) 89 { 90 int cap; 91 u16 val; 92 93 /* First try to max out Read Byte Count */ 94 cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX); 95 if (cap) { 96 if (pci_read_config_word(mdev->pdev, cap + PCI_X_CMD, &val)) { 97 mthca_err(mdev, "Couldn't read PCI-X command register, " 98 "aborting.\n"); 99 return -ENODEV; 100 } 101 val = (val & ~PCI_X_CMD_MAX_READ) | (3 << 2); 102 if (pci_write_config_word(mdev->pdev, cap + PCI_X_CMD, val)) { 103 mthca_err(mdev, "Couldn't write PCI-X command register, " 104 "aborting.\n"); 105 return -ENODEV; 106 } 107 } else if (!(mdev->mthca_flags & MTHCA_FLAG_PCIE)) 108 mthca_info(mdev, "No PCI-X capability, not setting RBC.\n"); 109 110 cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_EXP); 111 if (cap) { 112 if (pci_read_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, &val)) { 113 mthca_err(mdev, "Couldn't read PCI Express device control " 114 "register, aborting.\n"); 115 return -ENODEV; 116 } 117 val = (val & ~PCI_EXP_DEVCTL_READRQ) | (5 << 12); 118 if (pci_write_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, val)) { 119 mthca_err(mdev, "Couldn't write PCI Express device control " 120 "register, aborting.\n"); 121 return -ENODEV; 122 } 123 } else if (mdev->mthca_flags & MTHCA_FLAG_PCIE) 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 mdev->limits.port_width_cap = dev_lim->max_port_width; 175 176 /* IB_DEVICE_RESIZE_MAX_WR not supported by driver. 177 May be doable since hardware supports it for SRQ. 178 179 IB_DEVICE_N_NOTIFY_CQ is supported by hardware but not by driver. 180 181 IB_DEVICE_SRQ_RESIZE is supported by hardware but SRQ is not 182 supported by driver. */ 183 mdev->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 184 IB_DEVICE_PORT_ACTIVE_EVENT | 185 IB_DEVICE_SYS_IMAGE_GUID | 186 IB_DEVICE_RC_RNR_NAK_GEN; 187 188 if (dev_lim->flags & DEV_LIM_FLAG_BAD_PKEY_CNTR) 189 mdev->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 190 191 if (dev_lim->flags & DEV_LIM_FLAG_BAD_QKEY_CNTR) 192 mdev->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 193 194 if (dev_lim->flags & DEV_LIM_FLAG_RAW_MULTI) 195 mdev->device_cap_flags |= IB_DEVICE_RAW_MULTI; 196 197 if (dev_lim->flags & DEV_LIM_FLAG_AUTO_PATH_MIG) 198 mdev->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 199 200 if (dev_lim->flags & DEV_LIM_FLAG_UD_AV_PORT_ENFORCE) 201 mdev->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 202 203 if (dev_lim->flags & DEV_LIM_FLAG_SRQ) 204 mdev->mthca_flags |= MTHCA_FLAG_SRQ; 205 206 return 0; 207 } 208 209 static int __devinit mthca_init_tavor(struct mthca_dev *mdev) 210 { 211 u8 status; 212 int err; 213 struct mthca_dev_lim dev_lim; 214 struct mthca_profile profile; 215 struct mthca_init_hca_param init_hca; 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 if (mdev->mthca_flags & MTHCA_FLAG_SRQ) 257 profile.num_srq = dev_lim.max_srqs; 258 259 err = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca); 260 if (err < 0) 261 goto err_disable; 262 263 err = mthca_INIT_HCA(mdev, &init_hca, &status); 264 if (err) { 265 mthca_err(mdev, "INIT_HCA command failed, aborting.\n"); 266 goto err_disable; 267 } 268 if (status) { 269 mthca_err(mdev, "INIT_HCA returned status 0x%02x, " 270 "aborting.\n", status); 271 err = -EINVAL; 272 goto err_disable; 273 } 274 275 return 0; 276 277 err_disable: 278 mthca_SYS_DIS(mdev, &status); 279 280 return err; 281 } 282 283 static int __devinit mthca_load_fw(struct mthca_dev *mdev) 284 { 285 u8 status; 286 int err; 287 288 /* FIXME: use HCA-attached memory for FW if present */ 289 290 mdev->fw.arbel.fw_icm = 291 mthca_alloc_icm(mdev, mdev->fw.arbel.fw_pages, 292 GFP_HIGHUSER | __GFP_NOWARN); 293 if (!mdev->fw.arbel.fw_icm) { 294 mthca_err(mdev, "Couldn't allocate FW area, aborting.\n"); 295 return -ENOMEM; 296 } 297 298 err = mthca_MAP_FA(mdev, mdev->fw.arbel.fw_icm, &status); 299 if (err) { 300 mthca_err(mdev, "MAP_FA command failed, aborting.\n"); 301 goto err_free; 302 } 303 if (status) { 304 mthca_err(mdev, "MAP_FA returned status 0x%02x, aborting.\n", status); 305 err = -EINVAL; 306 goto err_free; 307 } 308 err = mthca_RUN_FW(mdev, &status); 309 if (err) { 310 mthca_err(mdev, "RUN_FW command failed, aborting.\n"); 311 goto err_unmap_fa; 312 } 313 if (status) { 314 mthca_err(mdev, "RUN_FW returned status 0x%02x, aborting.\n", status); 315 err = -EINVAL; 316 goto err_unmap_fa; 317 } 318 319 return 0; 320 321 err_unmap_fa: 322 mthca_UNMAP_FA(mdev, &status); 323 324 err_free: 325 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm); 326 return err; 327 } 328 329 static int __devinit mthca_init_icm(struct mthca_dev *mdev, 330 struct mthca_dev_lim *dev_lim, 331 struct mthca_init_hca_param *init_hca, 332 u64 icm_size) 333 { 334 u64 aux_pages; 335 u8 status; 336 int err; 337 338 err = mthca_SET_ICM_SIZE(mdev, icm_size, &aux_pages, &status); 339 if (err) { 340 mthca_err(mdev, "SET_ICM_SIZE command failed, aborting.\n"); 341 return err; 342 } 343 if (status) { 344 mthca_err(mdev, "SET_ICM_SIZE returned status 0x%02x, " 345 "aborting.\n", status); 346 return -EINVAL; 347 } 348 349 mthca_dbg(mdev, "%lld KB of HCA context requires %lld KB aux memory.\n", 350 (unsigned long long) icm_size >> 10, 351 (unsigned long long) aux_pages << 2); 352 353 mdev->fw.arbel.aux_icm = mthca_alloc_icm(mdev, aux_pages, 354 GFP_HIGHUSER | __GFP_NOWARN); 355 if (!mdev->fw.arbel.aux_icm) { 356 mthca_err(mdev, "Couldn't allocate aux memory, aborting.\n"); 357 return -ENOMEM; 358 } 359 360 err = mthca_MAP_ICM_AUX(mdev, mdev->fw.arbel.aux_icm, &status); 361 if (err) { 362 mthca_err(mdev, "MAP_ICM_AUX command failed, aborting.\n"); 363 goto err_free_aux; 364 } 365 if (status) { 366 mthca_err(mdev, "MAP_ICM_AUX returned status 0x%02x, aborting.\n", status); 367 err = -EINVAL; 368 goto err_free_aux; 369 } 370 371 err = mthca_map_eq_icm(mdev, init_hca->eqc_base); 372 if (err) { 373 mthca_err(mdev, "Failed to map EQ context memory, aborting.\n"); 374 goto err_unmap_aux; 375 } 376 377 mdev->mr_table.mtt_table = mthca_alloc_icm_table(mdev, init_hca->mtt_base, 378 MTHCA_MTT_SEG_SIZE, 379 mdev->limits.num_mtt_segs, 380 mdev->limits.reserved_mtts, 1); 381 if (!mdev->mr_table.mtt_table) { 382 mthca_err(mdev, "Failed to map MTT context memory, aborting.\n"); 383 err = -ENOMEM; 384 goto err_unmap_eq; 385 } 386 387 mdev->mr_table.mpt_table = mthca_alloc_icm_table(mdev, init_hca->mpt_base, 388 dev_lim->mpt_entry_sz, 389 mdev->limits.num_mpts, 390 mdev->limits.reserved_mrws, 1); 391 if (!mdev->mr_table.mpt_table) { 392 mthca_err(mdev, "Failed to map MPT context memory, aborting.\n"); 393 err = -ENOMEM; 394 goto err_unmap_mtt; 395 } 396 397 mdev->qp_table.qp_table = mthca_alloc_icm_table(mdev, init_hca->qpc_base, 398 dev_lim->qpc_entry_sz, 399 mdev->limits.num_qps, 400 mdev->limits.reserved_qps, 0); 401 if (!mdev->qp_table.qp_table) { 402 mthca_err(mdev, "Failed to map QP context memory, aborting.\n"); 403 err = -ENOMEM; 404 goto err_unmap_mpt; 405 } 406 407 mdev->qp_table.eqp_table = mthca_alloc_icm_table(mdev, init_hca->eqpc_base, 408 dev_lim->eqpc_entry_sz, 409 mdev->limits.num_qps, 410 mdev->limits.reserved_qps, 0); 411 if (!mdev->qp_table.eqp_table) { 412 mthca_err(mdev, "Failed to map EQP context memory, aborting.\n"); 413 err = -ENOMEM; 414 goto err_unmap_qp; 415 } 416 417 mdev->qp_table.rdb_table = mthca_alloc_icm_table(mdev, init_hca->rdb_base, 418 MTHCA_RDB_ENTRY_SIZE, 419 mdev->limits.num_qps << 420 mdev->qp_table.rdb_shift, 421 0, 0); 422 if (!mdev->qp_table.rdb_table) { 423 mthca_err(mdev, "Failed to map RDB context memory, aborting\n"); 424 err = -ENOMEM; 425 goto err_unmap_eqp; 426 } 427 428 mdev->cq_table.table = mthca_alloc_icm_table(mdev, init_hca->cqc_base, 429 dev_lim->cqc_entry_sz, 430 mdev->limits.num_cqs, 431 mdev->limits.reserved_cqs, 0); 432 if (!mdev->cq_table.table) { 433 mthca_err(mdev, "Failed to map CQ context memory, aborting.\n"); 434 err = -ENOMEM; 435 goto err_unmap_rdb; 436 } 437 438 if (mdev->mthca_flags & MTHCA_FLAG_SRQ) { 439 mdev->srq_table.table = 440 mthca_alloc_icm_table(mdev, init_hca->srqc_base, 441 dev_lim->srq_entry_sz, 442 mdev->limits.num_srqs, 443 mdev->limits.reserved_srqs, 0); 444 if (!mdev->srq_table.table) { 445 mthca_err(mdev, "Failed to map SRQ context memory, " 446 "aborting.\n"); 447 err = -ENOMEM; 448 goto err_unmap_cq; 449 } 450 } 451 452 /* 453 * It's not strictly required, but for simplicity just map the 454 * whole multicast group table now. The table isn't very big 455 * and it's a lot easier than trying to track ref counts. 456 */ 457 mdev->mcg_table.table = mthca_alloc_icm_table(mdev, init_hca->mc_base, 458 MTHCA_MGM_ENTRY_SIZE, 459 mdev->limits.num_mgms + 460 mdev->limits.num_amgms, 461 mdev->limits.num_mgms + 462 mdev->limits.num_amgms, 463 0); 464 if (!mdev->mcg_table.table) { 465 mthca_err(mdev, "Failed to map MCG context memory, aborting.\n"); 466 err = -ENOMEM; 467 goto err_unmap_srq; 468 } 469 470 return 0; 471 472 err_unmap_srq: 473 if (mdev->mthca_flags & MTHCA_FLAG_SRQ) 474 mthca_free_icm_table(mdev, mdev->srq_table.table); 475 476 err_unmap_cq: 477 mthca_free_icm_table(mdev, mdev->cq_table.table); 478 479 err_unmap_rdb: 480 mthca_free_icm_table(mdev, mdev->qp_table.rdb_table); 481 482 err_unmap_eqp: 483 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table); 484 485 err_unmap_qp: 486 mthca_free_icm_table(mdev, mdev->qp_table.qp_table); 487 488 err_unmap_mpt: 489 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table); 490 491 err_unmap_mtt: 492 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table); 493 494 err_unmap_eq: 495 mthca_unmap_eq_icm(mdev); 496 497 err_unmap_aux: 498 mthca_UNMAP_ICM_AUX(mdev, &status); 499 500 err_free_aux: 501 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm); 502 503 return err; 504 } 505 506 static void mthca_free_icms(struct mthca_dev *mdev) 507 { 508 u8 status; 509 510 mthca_free_icm_table(mdev, mdev->mcg_table.table); 511 if (mdev->mthca_flags & MTHCA_FLAG_SRQ) 512 mthca_free_icm_table(mdev, mdev->srq_table.table); 513 mthca_free_icm_table(mdev, mdev->cq_table.table); 514 mthca_free_icm_table(mdev, mdev->qp_table.rdb_table); 515 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table); 516 mthca_free_icm_table(mdev, mdev->qp_table.qp_table); 517 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table); 518 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table); 519 mthca_unmap_eq_icm(mdev); 520 521 mthca_UNMAP_ICM_AUX(mdev, &status); 522 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm); 523 } 524 525 static int __devinit mthca_init_arbel(struct mthca_dev *mdev) 526 { 527 struct mthca_dev_lim dev_lim; 528 struct mthca_profile profile; 529 struct mthca_init_hca_param init_hca; 530 u64 icm_size; 531 u8 status; 532 int err; 533 534 err = mthca_QUERY_FW(mdev, &status); 535 if (err) { 536 mthca_err(mdev, "QUERY_FW command failed, aborting.\n"); 537 return err; 538 } 539 if (status) { 540 mthca_err(mdev, "QUERY_FW returned status 0x%02x, " 541 "aborting.\n", status); 542 return -EINVAL; 543 } 544 545 err = mthca_ENABLE_LAM(mdev, &status); 546 if (err) { 547 mthca_err(mdev, "ENABLE_LAM command failed, aborting.\n"); 548 return err; 549 } 550 if (status == MTHCA_CMD_STAT_LAM_NOT_PRE) { 551 mthca_dbg(mdev, "No HCA-attached memory (running in MemFree mode)\n"); 552 mdev->mthca_flags |= MTHCA_FLAG_NO_LAM; 553 } else if (status) { 554 mthca_err(mdev, "ENABLE_LAM returned status 0x%02x, " 555 "aborting.\n", status); 556 return -EINVAL; 557 } 558 559 err = mthca_load_fw(mdev); 560 if (err) { 561 mthca_err(mdev, "Failed to start FW, aborting.\n"); 562 goto err_disable; 563 } 564 565 err = mthca_dev_lim(mdev, &dev_lim); 566 if (err) { 567 mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n"); 568 goto err_stop_fw; 569 } 570 571 profile = default_profile; 572 profile.num_uar = dev_lim.uar_size / PAGE_SIZE; 573 profile.num_udav = 0; 574 if (mdev->mthca_flags & MTHCA_FLAG_SRQ) 575 profile.num_srq = dev_lim.max_srqs; 576 577 icm_size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca); 578 if ((int) icm_size < 0) { 579 err = icm_size; 580 goto err_stop_fw; 581 } 582 583 err = mthca_init_icm(mdev, &dev_lim, &init_hca, icm_size); 584 if (err) 585 goto err_stop_fw; 586 587 err = mthca_INIT_HCA(mdev, &init_hca, &status); 588 if (err) { 589 mthca_err(mdev, "INIT_HCA command failed, aborting.\n"); 590 goto err_free_icm; 591 } 592 if (status) { 593 mthca_err(mdev, "INIT_HCA returned status 0x%02x, " 594 "aborting.\n", status); 595 err = -EINVAL; 596 goto err_free_icm; 597 } 598 599 return 0; 600 601 err_free_icm: 602 mthca_free_icms(mdev); 603 604 err_stop_fw: 605 mthca_UNMAP_FA(mdev, &status); 606 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm); 607 608 err_disable: 609 if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM)) 610 mthca_DISABLE_LAM(mdev, &status); 611 612 return err; 613 } 614 615 static void mthca_close_hca(struct mthca_dev *mdev) 616 { 617 u8 status; 618 619 mthca_CLOSE_HCA(mdev, 0, &status); 620 621 if (mthca_is_memfree(mdev)) { 622 mthca_free_icms(mdev); 623 624 mthca_UNMAP_FA(mdev, &status); 625 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm); 626 627 if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM)) 628 mthca_DISABLE_LAM(mdev, &status); 629 } else 630 mthca_SYS_DIS(mdev, &status); 631 } 632 633 static int __devinit mthca_init_hca(struct mthca_dev *mdev) 634 { 635 u8 status; 636 int err; 637 struct mthca_adapter adapter; 638 639 if (mthca_is_memfree(mdev)) 640 err = mthca_init_arbel(mdev); 641 else 642 err = mthca_init_tavor(mdev); 643 644 if (err) 645 return err; 646 647 err = mthca_QUERY_ADAPTER(mdev, &adapter, &status); 648 if (err) { 649 mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n"); 650 goto err_close; 651 } 652 if (status) { 653 mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, " 654 "aborting.\n", status); 655 err = -EINVAL; 656 goto err_close; 657 } 658 659 mdev->eq_table.inta_pin = adapter.inta_pin; 660 mdev->rev_id = adapter.revision_id; 661 memcpy(mdev->board_id, adapter.board_id, sizeof mdev->board_id); 662 663 return 0; 664 665 err_close: 666 mthca_close_hca(mdev); 667 return err; 668 } 669 670 static int __devinit mthca_setup_hca(struct mthca_dev *dev) 671 { 672 int err; 673 u8 status; 674 675 MTHCA_INIT_DOORBELL_LOCK(&dev->doorbell_lock); 676 677 err = mthca_init_uar_table(dev); 678 if (err) { 679 mthca_err(dev, "Failed to initialize " 680 "user access region table, aborting.\n"); 681 return err; 682 } 683 684 err = mthca_uar_alloc(dev, &dev->driver_uar); 685 if (err) { 686 mthca_err(dev, "Failed to allocate driver access region, " 687 "aborting.\n"); 688 goto err_uar_table_free; 689 } 690 691 dev->kar = ioremap(dev->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE); 692 if (!dev->kar) { 693 mthca_err(dev, "Couldn't map kernel access region, " 694 "aborting.\n"); 695 err = -ENOMEM; 696 goto err_uar_free; 697 } 698 699 err = mthca_init_pd_table(dev); 700 if (err) { 701 mthca_err(dev, "Failed to initialize " 702 "protection domain table, aborting.\n"); 703 goto err_kar_unmap; 704 } 705 706 err = mthca_init_mr_table(dev); 707 if (err) { 708 mthca_err(dev, "Failed to initialize " 709 "memory region table, aborting.\n"); 710 goto err_pd_table_free; 711 } 712 713 err = mthca_pd_alloc(dev, 1, &dev->driver_pd); 714 if (err) { 715 mthca_err(dev, "Failed to create driver PD, " 716 "aborting.\n"); 717 goto err_mr_table_free; 718 } 719 720 err = mthca_init_eq_table(dev); 721 if (err) { 722 mthca_err(dev, "Failed to initialize " 723 "event queue table, aborting.\n"); 724 goto err_pd_free; 725 } 726 727 err = mthca_cmd_use_events(dev); 728 if (err) { 729 mthca_err(dev, "Failed to switch to event-driven " 730 "firmware commands, aborting.\n"); 731 goto err_eq_table_free; 732 } 733 734 err = mthca_NOP(dev, &status); 735 if (err || status) { 736 mthca_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting.\n", 737 dev->mthca_flags & MTHCA_FLAG_MSI_X ? 738 dev->eq_table.eq[MTHCA_EQ_CMD].msi_x_vector : 739 dev->pdev->irq); 740 if (dev->mthca_flags & (MTHCA_FLAG_MSI | MTHCA_FLAG_MSI_X)) 741 mthca_err(dev, "Try again with MSI/MSI-X disabled.\n"); 742 else 743 mthca_err(dev, "BIOS or ACPI interrupt routing problem?\n"); 744 745 goto err_cmd_poll; 746 } 747 748 mthca_dbg(dev, "NOP command IRQ test passed\n"); 749 750 err = mthca_init_cq_table(dev); 751 if (err) { 752 mthca_err(dev, "Failed to initialize " 753 "completion queue table, aborting.\n"); 754 goto err_cmd_poll; 755 } 756 757 err = mthca_init_srq_table(dev); 758 if (err) { 759 mthca_err(dev, "Failed to initialize " 760 "shared receive queue table, aborting.\n"); 761 goto err_cq_table_free; 762 } 763 764 err = mthca_init_qp_table(dev); 765 if (err) { 766 mthca_err(dev, "Failed to initialize " 767 "queue pair table, aborting.\n"); 768 goto err_srq_table_free; 769 } 770 771 err = mthca_init_av_table(dev); 772 if (err) { 773 mthca_err(dev, "Failed to initialize " 774 "address vector table, aborting.\n"); 775 goto err_qp_table_free; 776 } 777 778 err = mthca_init_mcg_table(dev); 779 if (err) { 780 mthca_err(dev, "Failed to initialize " 781 "multicast group table, aborting.\n"); 782 goto err_av_table_free; 783 } 784 785 return 0; 786 787 err_av_table_free: 788 mthca_cleanup_av_table(dev); 789 790 err_qp_table_free: 791 mthca_cleanup_qp_table(dev); 792 793 err_srq_table_free: 794 mthca_cleanup_srq_table(dev); 795 796 err_cq_table_free: 797 mthca_cleanup_cq_table(dev); 798 799 err_cmd_poll: 800 mthca_cmd_use_polling(dev); 801 802 err_eq_table_free: 803 mthca_cleanup_eq_table(dev); 804 805 err_pd_free: 806 mthca_pd_free(dev, &dev->driver_pd); 807 808 err_mr_table_free: 809 mthca_cleanup_mr_table(dev); 810 811 err_pd_table_free: 812 mthca_cleanup_pd_table(dev); 813 814 err_kar_unmap: 815 iounmap(dev->kar); 816 817 err_uar_free: 818 mthca_uar_free(dev, &dev->driver_uar); 819 820 err_uar_table_free: 821 mthca_cleanup_uar_table(dev); 822 return err; 823 } 824 825 static int __devinit mthca_request_regions(struct pci_dev *pdev, 826 int ddr_hidden) 827 { 828 int err; 829 830 /* 831 * We can't just use pci_request_regions() because the MSI-X 832 * table is right in the middle of the first BAR. If we did 833 * pci_request_region and grab all of the first BAR, then 834 * setting up MSI-X would fail, since the PCI core wants to do 835 * request_mem_region on the MSI-X vector table. 836 * 837 * So just request what we need right now, and request any 838 * other regions we need when setting up EQs. 839 */ 840 if (!request_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, 841 MTHCA_HCR_SIZE, DRV_NAME)) 842 return -EBUSY; 843 844 err = pci_request_region(pdev, 2, DRV_NAME); 845 if (err) 846 goto err_bar2_failed; 847 848 if (!ddr_hidden) { 849 err = pci_request_region(pdev, 4, DRV_NAME); 850 if (err) 851 goto err_bar4_failed; 852 } 853 854 return 0; 855 856 err_bar4_failed: 857 pci_release_region(pdev, 2); 858 859 err_bar2_failed: 860 release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, 861 MTHCA_HCR_SIZE); 862 863 return err; 864 } 865 866 static void mthca_release_regions(struct pci_dev *pdev, 867 int ddr_hidden) 868 { 869 if (!ddr_hidden) 870 pci_release_region(pdev, 4); 871 872 pci_release_region(pdev, 2); 873 874 release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, 875 MTHCA_HCR_SIZE); 876 } 877 878 static int __devinit mthca_enable_msi_x(struct mthca_dev *mdev) 879 { 880 struct msix_entry entries[3]; 881 int err; 882 883 entries[0].entry = 0; 884 entries[1].entry = 1; 885 entries[2].entry = 2; 886 887 err = pci_enable_msix(mdev->pdev, entries, ARRAY_SIZE(entries)); 888 if (err) { 889 if (err > 0) 890 mthca_info(mdev, "Only %d MSI-X vectors available, " 891 "not using MSI-X\n", err); 892 return err; 893 } 894 895 mdev->eq_table.eq[MTHCA_EQ_COMP ].msi_x_vector = entries[0].vector; 896 mdev->eq_table.eq[MTHCA_EQ_ASYNC].msi_x_vector = entries[1].vector; 897 mdev->eq_table.eq[MTHCA_EQ_CMD ].msi_x_vector = entries[2].vector; 898 899 return 0; 900 } 901 902 /* Types of supported HCA */ 903 enum { 904 TAVOR, /* MT23108 */ 905 ARBEL_COMPAT, /* MT25208 in Tavor compat mode */ 906 ARBEL_NATIVE, /* MT25208 with extended features */ 907 SINAI /* MT25204 */ 908 }; 909 910 #define MTHCA_FW_VER(major, minor, subminor) \ 911 (((u64) (major) << 32) | ((u64) (minor) << 16) | (u64) (subminor)) 912 913 static struct { 914 u64 latest_fw; 915 int is_memfree; 916 int is_pcie; 917 } mthca_hca_table[] = { 918 [TAVOR] = { .latest_fw = MTHCA_FW_VER(3, 3, 3), .is_memfree = 0, .is_pcie = 0 }, 919 [ARBEL_COMPAT] = { .latest_fw = MTHCA_FW_VER(4, 7, 0), .is_memfree = 0, .is_pcie = 1 }, 920 [ARBEL_NATIVE] = { .latest_fw = MTHCA_FW_VER(5, 1, 0), .is_memfree = 1, .is_pcie = 1 }, 921 [SINAI] = { .latest_fw = MTHCA_FW_VER(1, 0, 1), .is_memfree = 1, .is_pcie = 1 } 922 }; 923 924 static int __devinit mthca_init_one(struct pci_dev *pdev, 925 const struct pci_device_id *id) 926 { 927 static int mthca_version_printed = 0; 928 int ddr_hidden = 0; 929 int err; 930 struct mthca_dev *mdev; 931 932 if (!mthca_version_printed) { 933 printk(KERN_INFO "%s", mthca_version); 934 ++mthca_version_printed; 935 } 936 937 printk(KERN_INFO PFX "Initializing %s\n", 938 pci_name(pdev)); 939 940 if (id->driver_data >= ARRAY_SIZE(mthca_hca_table)) { 941 printk(KERN_ERR PFX "%s has invalid driver data %lx\n", 942 pci_name(pdev), id->driver_data); 943 return -ENODEV; 944 } 945 946 err = pci_enable_device(pdev); 947 if (err) { 948 dev_err(&pdev->dev, "Cannot enable PCI device, " 949 "aborting.\n"); 950 return err; 951 } 952 953 /* 954 * Check for BARs. We expect 0: 1MB, 2: 8MB, 4: DDR (may not 955 * be present) 956 */ 957 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) || 958 pci_resource_len(pdev, 0) != 1 << 20) { 959 dev_err(&pdev->dev, "Missing DCS, aborting.\n"); 960 err = -ENODEV; 961 goto err_disable_pdev; 962 } 963 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM) || 964 pci_resource_len(pdev, 2) != 1 << 23) { 965 dev_err(&pdev->dev, "Missing UAR, aborting.\n"); 966 err = -ENODEV; 967 goto err_disable_pdev; 968 } 969 if (!(pci_resource_flags(pdev, 4) & IORESOURCE_MEM)) 970 ddr_hidden = 1; 971 972 err = mthca_request_regions(pdev, ddr_hidden); 973 if (err) { 974 dev_err(&pdev->dev, "Cannot obtain PCI resources, " 975 "aborting.\n"); 976 goto err_disable_pdev; 977 } 978 979 pci_set_master(pdev); 980 981 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); 982 if (err) { 983 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n"); 984 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 985 if (err) { 986 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n"); 987 goto err_free_res; 988 } 989 } 990 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); 991 if (err) { 992 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit " 993 "consistent PCI DMA mask.\n"); 994 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); 995 if (err) { 996 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, " 997 "aborting.\n"); 998 goto err_free_res; 999 } 1000 } 1001 1002 mdev = (struct mthca_dev *) ib_alloc_device(sizeof *mdev); 1003 if (!mdev) { 1004 dev_err(&pdev->dev, "Device struct alloc failed, " 1005 "aborting.\n"); 1006 err = -ENOMEM; 1007 goto err_free_res; 1008 } 1009 1010 mdev->pdev = pdev; 1011 1012 if (ddr_hidden) 1013 mdev->mthca_flags |= MTHCA_FLAG_DDR_HIDDEN; 1014 if (mthca_hca_table[id->driver_data].is_memfree) 1015 mdev->mthca_flags |= MTHCA_FLAG_MEMFREE; 1016 if (mthca_hca_table[id->driver_data].is_pcie) 1017 mdev->mthca_flags |= MTHCA_FLAG_PCIE; 1018 1019 /* 1020 * Now reset the HCA before we touch the PCI capabilities or 1021 * attempt a firmware command, since a boot ROM may have left 1022 * the HCA in an undefined state. 1023 */ 1024 err = mthca_reset(mdev); 1025 if (err) { 1026 mthca_err(mdev, "Failed to reset HCA, aborting.\n"); 1027 goto err_free_dev; 1028 } 1029 1030 if (msi_x && !mthca_enable_msi_x(mdev)) 1031 mdev->mthca_flags |= MTHCA_FLAG_MSI_X; 1032 if (msi && !(mdev->mthca_flags & MTHCA_FLAG_MSI_X) && 1033 !pci_enable_msi(pdev)) 1034 mdev->mthca_flags |= MTHCA_FLAG_MSI; 1035 1036 if (mthca_cmd_init(mdev)) { 1037 mthca_err(mdev, "Failed to init command interface, aborting.\n"); 1038 goto err_free_dev; 1039 } 1040 1041 err = mthca_tune_pci(mdev); 1042 if (err) 1043 goto err_cmd; 1044 1045 err = mthca_init_hca(mdev); 1046 if (err) 1047 goto err_cmd; 1048 1049 if (mdev->fw_ver < mthca_hca_table[id->driver_data].latest_fw) { 1050 mthca_warn(mdev, "HCA FW version %x.%x.%x is old (%x.%x.%x is current).\n", 1051 (int) (mdev->fw_ver >> 32), (int) (mdev->fw_ver >> 16) & 0xffff, 1052 (int) (mdev->fw_ver & 0xffff), 1053 (int) (mthca_hca_table[id->driver_data].latest_fw >> 32), 1054 (int) (mthca_hca_table[id->driver_data].latest_fw >> 16) & 0xffff, 1055 (int) (mthca_hca_table[id->driver_data].latest_fw & 0xffff)); 1056 mthca_warn(mdev, "If you have problems, try updating your HCA FW.\n"); 1057 } 1058 1059 err = mthca_setup_hca(mdev); 1060 if (err) 1061 goto err_close; 1062 1063 err = mthca_register_device(mdev); 1064 if (err) 1065 goto err_cleanup; 1066 1067 err = mthca_create_agents(mdev); 1068 if (err) 1069 goto err_unregister; 1070 1071 pci_set_drvdata(pdev, mdev); 1072 1073 return 0; 1074 1075 err_unregister: 1076 mthca_unregister_device(mdev); 1077 1078 err_cleanup: 1079 mthca_cleanup_mcg_table(mdev); 1080 mthca_cleanup_av_table(mdev); 1081 mthca_cleanup_qp_table(mdev); 1082 mthca_cleanup_srq_table(mdev); 1083 mthca_cleanup_cq_table(mdev); 1084 mthca_cmd_use_polling(mdev); 1085 mthca_cleanup_eq_table(mdev); 1086 1087 mthca_pd_free(mdev, &mdev->driver_pd); 1088 1089 mthca_cleanup_mr_table(mdev); 1090 mthca_cleanup_pd_table(mdev); 1091 mthca_cleanup_uar_table(mdev); 1092 1093 err_close: 1094 mthca_close_hca(mdev); 1095 1096 err_cmd: 1097 mthca_cmd_cleanup(mdev); 1098 1099 err_free_dev: 1100 if (mdev->mthca_flags & MTHCA_FLAG_MSI_X) 1101 pci_disable_msix(pdev); 1102 if (mdev->mthca_flags & MTHCA_FLAG_MSI) 1103 pci_disable_msi(pdev); 1104 1105 ib_dealloc_device(&mdev->ib_dev); 1106 1107 err_free_res: 1108 mthca_release_regions(pdev, ddr_hidden); 1109 1110 err_disable_pdev: 1111 pci_disable_device(pdev); 1112 pci_set_drvdata(pdev, NULL); 1113 return err; 1114 } 1115 1116 static void __devexit mthca_remove_one(struct pci_dev *pdev) 1117 { 1118 struct mthca_dev *mdev = pci_get_drvdata(pdev); 1119 u8 status; 1120 int p; 1121 1122 if (mdev) { 1123 mthca_free_agents(mdev); 1124 mthca_unregister_device(mdev); 1125 1126 for (p = 1; p <= mdev->limits.num_ports; ++p) 1127 mthca_CLOSE_IB(mdev, p, &status); 1128 1129 mthca_cleanup_mcg_table(mdev); 1130 mthca_cleanup_av_table(mdev); 1131 mthca_cleanup_qp_table(mdev); 1132 mthca_cleanup_srq_table(mdev); 1133 mthca_cleanup_cq_table(mdev); 1134 mthca_cmd_use_polling(mdev); 1135 mthca_cleanup_eq_table(mdev); 1136 1137 mthca_pd_free(mdev, &mdev->driver_pd); 1138 1139 mthca_cleanup_mr_table(mdev); 1140 mthca_cleanup_pd_table(mdev); 1141 1142 iounmap(mdev->kar); 1143 mthca_uar_free(mdev, &mdev->driver_uar); 1144 mthca_cleanup_uar_table(mdev); 1145 mthca_close_hca(mdev); 1146 mthca_cmd_cleanup(mdev); 1147 1148 if (mdev->mthca_flags & MTHCA_FLAG_MSI_X) 1149 pci_disable_msix(pdev); 1150 if (mdev->mthca_flags & MTHCA_FLAG_MSI) 1151 pci_disable_msi(pdev); 1152 1153 ib_dealloc_device(&mdev->ib_dev); 1154 mthca_release_regions(pdev, mdev->mthca_flags & 1155 MTHCA_FLAG_DDR_HIDDEN); 1156 pci_disable_device(pdev); 1157 pci_set_drvdata(pdev, NULL); 1158 } 1159 } 1160 1161 static struct pci_device_id mthca_pci_table[] = { 1162 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR), 1163 .driver_data = TAVOR }, 1164 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_TAVOR), 1165 .driver_data = TAVOR }, 1166 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT), 1167 .driver_data = ARBEL_COMPAT }, 1168 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT), 1169 .driver_data = ARBEL_COMPAT }, 1170 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL), 1171 .driver_data = ARBEL_NATIVE }, 1172 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL), 1173 .driver_data = ARBEL_NATIVE }, 1174 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_SINAI), 1175 .driver_data = SINAI }, 1176 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_SINAI), 1177 .driver_data = SINAI }, 1178 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_SINAI_OLD), 1179 .driver_data = SINAI }, 1180 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_SINAI_OLD), 1181 .driver_data = SINAI }, 1182 { 0, } 1183 }; 1184 1185 MODULE_DEVICE_TABLE(pci, mthca_pci_table); 1186 1187 static struct pci_driver mthca_driver = { 1188 .name = DRV_NAME, 1189 .id_table = mthca_pci_table, 1190 .probe = mthca_init_one, 1191 .remove = __devexit_p(mthca_remove_one) 1192 }; 1193 1194 static int __init mthca_init(void) 1195 { 1196 int ret; 1197 1198 ret = pci_register_driver(&mthca_driver); 1199 return ret < 0 ? ret : 0; 1200 } 1201 1202 static void __exit mthca_cleanup(void) 1203 { 1204 pci_unregister_driver(&mthca_driver); 1205 } 1206 1207 module_init(mthca_init); 1208 module_exit(mthca_cleanup); 1209