1 /* 2 * Copyright (c) 2004 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #include <linux/slab.h> 35 #include <linux/errno.h> 36 37 #include "mthca_dev.h" 38 #include "mthca_cmd.h" 39 #include "mthca_memfree.h" 40 41 struct mthca_mtt { 42 struct mthca_buddy *buddy; 43 int order; 44 u32 first_seg; 45 }; 46 47 /* 48 * Must be packed because mtt_seg is 64 bits but only aligned to 32 bits. 49 */ 50 struct mthca_mpt_entry { 51 __be32 flags; 52 __be32 page_size; 53 __be32 key; 54 __be32 pd; 55 __be64 start; 56 __be64 length; 57 __be32 lkey; 58 __be32 window_count; 59 __be32 window_count_limit; 60 __be64 mtt_seg; 61 __be32 mtt_sz; /* Arbel only */ 62 u32 reserved[2]; 63 } __packed; 64 65 #define MTHCA_MPT_FLAG_SW_OWNS (0xfUL << 28) 66 #define MTHCA_MPT_FLAG_MIO (1 << 17) 67 #define MTHCA_MPT_FLAG_BIND_ENABLE (1 << 15) 68 #define MTHCA_MPT_FLAG_PHYSICAL (1 << 9) 69 #define MTHCA_MPT_FLAG_REGION (1 << 8) 70 71 #define MTHCA_MTT_FLAG_PRESENT 1 72 73 #define MTHCA_MPT_STATUS_SW 0xF0 74 #define MTHCA_MPT_STATUS_HW 0x00 75 76 #define SINAI_FMR_KEY_INC 0x1000000 77 78 /* 79 * Buddy allocator for MTT segments (currently not very efficient 80 * since it doesn't keep a free list and just searches linearly 81 * through the bitmaps) 82 */ 83 84 static u32 mthca_buddy_alloc(struct mthca_buddy *buddy, int order) 85 { 86 int o; 87 int m; 88 u32 seg; 89 90 spin_lock(&buddy->lock); 91 92 for (o = order; o <= buddy->max_order; ++o) 93 if (buddy->num_free[o]) { 94 m = 1 << (buddy->max_order - o); 95 seg = find_first_bit(buddy->bits[o], m); 96 if (seg < m) 97 goto found; 98 } 99 100 spin_unlock(&buddy->lock); 101 return -1; 102 103 found: 104 __clear_bit(seg, buddy->bits[o]); 105 --buddy->num_free[o]; 106 107 while (o > order) { 108 --o; 109 seg <<= 1; 110 __set_bit(seg ^ 1, buddy->bits[o]); 111 ++buddy->num_free[o]; 112 } 113 114 spin_unlock(&buddy->lock); 115 116 seg <<= order; 117 118 return seg; 119 } 120 121 static void mthca_buddy_free(struct mthca_buddy *buddy, u32 seg, int order) 122 { 123 seg >>= order; 124 125 spin_lock(&buddy->lock); 126 127 while (test_bit(seg ^ 1, buddy->bits[order])) { 128 __clear_bit(seg ^ 1, buddy->bits[order]); 129 --buddy->num_free[order]; 130 seg >>= 1; 131 ++order; 132 } 133 134 __set_bit(seg, buddy->bits[order]); 135 ++buddy->num_free[order]; 136 137 spin_unlock(&buddy->lock); 138 } 139 140 static int mthca_buddy_init(struct mthca_buddy *buddy, int max_order) 141 { 142 int i; 143 144 buddy->max_order = max_order; 145 spin_lock_init(&buddy->lock); 146 147 buddy->bits = kcalloc(buddy->max_order + 1, sizeof(*buddy->bits), 148 GFP_KERNEL); 149 buddy->num_free = kzalloc_objs(*buddy->num_free, (buddy->max_order + 1)); 150 if (!buddy->bits || !buddy->num_free) 151 goto err_out; 152 153 for (i = 0; i <= buddy->max_order; ++i) { 154 buddy->bits[i] = bitmap_zalloc(1 << (buddy->max_order - i), 155 GFP_KERNEL); 156 if (!buddy->bits[i]) 157 goto err_out_free; 158 } 159 160 __set_bit(0, buddy->bits[buddy->max_order]); 161 buddy->num_free[buddy->max_order] = 1; 162 163 return 0; 164 165 err_out_free: 166 for (i = 0; i <= buddy->max_order; ++i) 167 bitmap_free(buddy->bits[i]); 168 169 err_out: 170 kfree(buddy->bits); 171 kfree(buddy->num_free); 172 173 return -ENOMEM; 174 } 175 176 static void mthca_buddy_cleanup(struct mthca_buddy *buddy) 177 { 178 int i; 179 180 for (i = 0; i <= buddy->max_order; ++i) 181 bitmap_free(buddy->bits[i]); 182 183 kfree(buddy->bits); 184 kfree(buddy->num_free); 185 } 186 187 static u32 mthca_alloc_mtt_range(struct mthca_dev *dev, int order, 188 struct mthca_buddy *buddy) 189 { 190 u32 seg = mthca_buddy_alloc(buddy, order); 191 192 if (seg == -1) 193 return -1; 194 195 if (mthca_is_memfree(dev)) 196 if (mthca_table_get_range(dev, dev->mr_table.mtt_table, seg, 197 seg + (1 << order) - 1)) { 198 mthca_buddy_free(buddy, seg, order); 199 seg = -1; 200 } 201 202 return seg; 203 } 204 205 static struct mthca_mtt *__mthca_alloc_mtt(struct mthca_dev *dev, int size, 206 struct mthca_buddy *buddy) 207 { 208 struct mthca_mtt *mtt; 209 int i; 210 211 if (size <= 0) 212 return ERR_PTR(-EINVAL); 213 214 mtt = kmalloc_obj(*mtt); 215 if (!mtt) 216 return ERR_PTR(-ENOMEM); 217 218 mtt->buddy = buddy; 219 mtt->order = 0; 220 for (i = dev->limits.mtt_seg_size / 8; i < size; i <<= 1) 221 ++mtt->order; 222 223 mtt->first_seg = mthca_alloc_mtt_range(dev, mtt->order, buddy); 224 if (mtt->first_seg == -1) { 225 kfree(mtt); 226 return ERR_PTR(-ENOMEM); 227 } 228 229 return mtt; 230 } 231 232 struct mthca_mtt *mthca_alloc_mtt(struct mthca_dev *dev, int size) 233 { 234 return __mthca_alloc_mtt(dev, size, &dev->mr_table.mtt_buddy); 235 } 236 237 void mthca_free_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt) 238 { 239 if (!mtt) 240 return; 241 242 mthca_buddy_free(mtt->buddy, mtt->first_seg, mtt->order); 243 244 mthca_table_put_range(dev, dev->mr_table.mtt_table, 245 mtt->first_seg, 246 mtt->first_seg + (1 << mtt->order) - 1); 247 248 kfree(mtt); 249 } 250 251 static int __mthca_write_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt, 252 int start_index, u64 *buffer_list, int list_len) 253 { 254 struct mthca_mailbox *mailbox; 255 __be64 *mtt_entry; 256 int err = 0; 257 int i; 258 259 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL); 260 if (IS_ERR(mailbox)) 261 return PTR_ERR(mailbox); 262 mtt_entry = mailbox->buf; 263 264 while (list_len > 0) { 265 mtt_entry[0] = cpu_to_be64(dev->mr_table.mtt_base + 266 mtt->first_seg * dev->limits.mtt_seg_size + 267 start_index * 8); 268 mtt_entry[1] = 0; 269 for (i = 0; i < list_len && i < MTHCA_MAILBOX_SIZE / 8 - 2; ++i) 270 mtt_entry[i + 2] = cpu_to_be64(buffer_list[i] | 271 MTHCA_MTT_FLAG_PRESENT); 272 273 /* 274 * If we have an odd number of entries to write, add 275 * one more dummy entry for firmware efficiency. 276 */ 277 if (i & 1) 278 mtt_entry[i + 2] = 0; 279 280 err = mthca_WRITE_MTT(dev, mailbox, (i + 1) & ~1); 281 if (err) { 282 mthca_warn(dev, "WRITE_MTT failed (%d)\n", err); 283 goto out; 284 } 285 286 list_len -= i; 287 start_index += i; 288 buffer_list += i; 289 } 290 291 out: 292 mthca_free_mailbox(dev, mailbox); 293 return err; 294 } 295 296 int mthca_write_mtt_size(struct mthca_dev *dev) 297 { 298 if (dev->mr_table.fmr_mtt_buddy != &dev->mr_table.mtt_buddy || 299 !(dev->mthca_flags & MTHCA_FLAG_FMR)) 300 /* 301 * Be friendly to WRITE_MTT command 302 * and leave two empty slots for the 303 * index and reserved fields of the 304 * mailbox. 305 */ 306 return PAGE_SIZE / sizeof (u64) - 2; 307 308 /* For Arbel, all MTTs must fit in the same page. */ 309 return mthca_is_memfree(dev) ? (PAGE_SIZE / sizeof (u64)) : 0x7ffffff; 310 } 311 312 static void mthca_tavor_write_mtt_seg(struct mthca_dev *dev, 313 struct mthca_mtt *mtt, int start_index, 314 u64 *buffer_list, int list_len) 315 { 316 u64 __iomem *mtts; 317 int i; 318 319 mtts = dev->mr_table.tavor_fmr.mtt_base + mtt->first_seg * dev->limits.mtt_seg_size + 320 start_index * sizeof (u64); 321 for (i = 0; i < list_len; ++i) 322 mthca_write64_raw(cpu_to_be64(buffer_list[i] | MTHCA_MTT_FLAG_PRESENT), 323 mtts + i); 324 } 325 326 static void mthca_arbel_write_mtt_seg(struct mthca_dev *dev, 327 struct mthca_mtt *mtt, int start_index, 328 u64 *buffer_list, int list_len) 329 { 330 __be64 *mtts; 331 dma_addr_t dma_handle; 332 int i; 333 int s = start_index * sizeof (u64); 334 335 /* For Arbel, all MTTs must fit in the same page. */ 336 BUG_ON(s / PAGE_SIZE != (s + list_len * sizeof(u64) - 1) / PAGE_SIZE); 337 /* Require full segments */ 338 BUG_ON(s % dev->limits.mtt_seg_size); 339 340 mtts = mthca_table_find(dev->mr_table.mtt_table, mtt->first_seg + 341 s / dev->limits.mtt_seg_size, &dma_handle); 342 343 BUG_ON(!mtts); 344 345 dma_sync_single_for_cpu(&dev->pdev->dev, dma_handle, 346 list_len * sizeof (u64), DMA_TO_DEVICE); 347 348 for (i = 0; i < list_len; ++i) 349 mtts[i] = cpu_to_be64(buffer_list[i] | MTHCA_MTT_FLAG_PRESENT); 350 351 dma_sync_single_for_device(&dev->pdev->dev, dma_handle, 352 list_len * sizeof (u64), DMA_TO_DEVICE); 353 } 354 355 int mthca_write_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt, 356 int start_index, u64 *buffer_list, int list_len) 357 { 358 int size = mthca_write_mtt_size(dev); 359 int chunk; 360 361 if (dev->mr_table.fmr_mtt_buddy != &dev->mr_table.mtt_buddy || 362 !(dev->mthca_flags & MTHCA_FLAG_FMR)) 363 return __mthca_write_mtt(dev, mtt, start_index, buffer_list, list_len); 364 365 while (list_len > 0) { 366 chunk = min(size, list_len); 367 if (mthca_is_memfree(dev)) 368 mthca_arbel_write_mtt_seg(dev, mtt, start_index, 369 buffer_list, chunk); 370 else 371 mthca_tavor_write_mtt_seg(dev, mtt, start_index, 372 buffer_list, chunk); 373 374 list_len -= chunk; 375 start_index += chunk; 376 buffer_list += chunk; 377 } 378 379 return 0; 380 } 381 382 static inline u32 tavor_hw_index_to_key(u32 ind) 383 { 384 return ind; 385 } 386 387 static inline u32 tavor_key_to_hw_index(u32 key) 388 { 389 return key; 390 } 391 392 static inline u32 arbel_hw_index_to_key(u32 ind) 393 { 394 return (ind >> 24) | (ind << 8); 395 } 396 397 static inline u32 arbel_key_to_hw_index(u32 key) 398 { 399 return (key << 24) | (key >> 8); 400 } 401 402 static inline u32 hw_index_to_key(struct mthca_dev *dev, u32 ind) 403 { 404 if (mthca_is_memfree(dev)) 405 return arbel_hw_index_to_key(ind); 406 else 407 return tavor_hw_index_to_key(ind); 408 } 409 410 static inline u32 key_to_hw_index(struct mthca_dev *dev, u32 key) 411 { 412 if (mthca_is_memfree(dev)) 413 return arbel_key_to_hw_index(key); 414 else 415 return tavor_key_to_hw_index(key); 416 } 417 418 static inline u32 adjust_key(struct mthca_dev *dev, u32 key) 419 { 420 if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT) 421 return ((key << 20) & 0x800000) | (key & 0x7fffff); 422 else 423 return key; 424 } 425 426 int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift, 427 u64 iova, u64 total_size, u32 access, struct mthca_mr *mr) 428 { 429 struct mthca_mailbox *mailbox; 430 struct mthca_mpt_entry *mpt_entry; 431 u32 key; 432 int i; 433 int err; 434 435 WARN_ON(buffer_size_shift >= 32); 436 437 key = mthca_alloc(&dev->mr_table.mpt_alloc); 438 if (key == -1) 439 return -ENOMEM; 440 key = adjust_key(dev, key); 441 mr->ibmr.rkey = mr->ibmr.lkey = hw_index_to_key(dev, key); 442 443 if (mthca_is_memfree(dev)) { 444 err = mthca_table_get(dev, dev->mr_table.mpt_table, key); 445 if (err) 446 goto err_out_mpt_free; 447 } 448 449 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL); 450 if (IS_ERR(mailbox)) { 451 err = PTR_ERR(mailbox); 452 goto err_out_table; 453 } 454 mpt_entry = mailbox->buf; 455 456 mpt_entry->flags = cpu_to_be32(MTHCA_MPT_FLAG_SW_OWNS | 457 MTHCA_MPT_FLAG_MIO | 458 MTHCA_MPT_FLAG_REGION | 459 access); 460 if (!mr->mtt) 461 mpt_entry->flags |= cpu_to_be32(MTHCA_MPT_FLAG_PHYSICAL); 462 463 mpt_entry->page_size = cpu_to_be32(buffer_size_shift - 12); 464 mpt_entry->key = cpu_to_be32(key); 465 mpt_entry->pd = cpu_to_be32(pd); 466 mpt_entry->start = cpu_to_be64(iova); 467 mpt_entry->length = cpu_to_be64(total_size); 468 469 memset_startat(mpt_entry, 0, lkey); 470 471 if (mr->mtt) 472 mpt_entry->mtt_seg = 473 cpu_to_be64(dev->mr_table.mtt_base + 474 mr->mtt->first_seg * dev->limits.mtt_seg_size); 475 476 if (0) { 477 mthca_dbg(dev, "Dumping MPT entry %08x:\n", mr->ibmr.lkey); 478 for (i = 0; i < sizeof (struct mthca_mpt_entry) / 4; ++i) { 479 if (i % 4 == 0) 480 printk("[%02x] ", i * 4); 481 printk(" %08x", be32_to_cpu(((__be32 *) mpt_entry)[i])); 482 if ((i + 1) % 4 == 0) 483 printk("\n"); 484 } 485 } 486 487 err = mthca_SW2HW_MPT(dev, mailbox, 488 key & (dev->limits.num_mpts - 1)); 489 if (err) { 490 mthca_warn(dev, "SW2HW_MPT failed (%d)\n", err); 491 goto err_out_mailbox; 492 } 493 494 mthca_free_mailbox(dev, mailbox); 495 return err; 496 497 err_out_mailbox: 498 mthca_free_mailbox(dev, mailbox); 499 500 err_out_table: 501 mthca_table_put(dev, dev->mr_table.mpt_table, key); 502 503 err_out_mpt_free: 504 mthca_free(&dev->mr_table.mpt_alloc, key); 505 return err; 506 } 507 508 int mthca_mr_alloc_notrans(struct mthca_dev *dev, u32 pd, 509 u32 access, struct mthca_mr *mr) 510 { 511 mr->mtt = NULL; 512 return mthca_mr_alloc(dev, pd, 12, 0, ~0ULL, access, mr); 513 } 514 515 int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd, 516 u64 *buffer_list, int buffer_size_shift, 517 int list_len, u64 iova, u64 total_size, 518 u32 access, struct mthca_mr *mr) 519 { 520 int err; 521 522 mr->mtt = mthca_alloc_mtt(dev, list_len); 523 if (IS_ERR(mr->mtt)) 524 return PTR_ERR(mr->mtt); 525 526 err = mthca_write_mtt(dev, mr->mtt, 0, buffer_list, list_len); 527 if (err) { 528 mthca_free_mtt(dev, mr->mtt); 529 return err; 530 } 531 532 err = mthca_mr_alloc(dev, pd, buffer_size_shift, iova, 533 total_size, access, mr); 534 if (err) 535 mthca_free_mtt(dev, mr->mtt); 536 537 return err; 538 } 539 540 /* Free mr */ 541 static void mthca_free_region(struct mthca_dev *dev, u32 lkey) 542 { 543 mthca_table_put(dev, dev->mr_table.mpt_table, 544 key_to_hw_index(dev, lkey)); 545 546 mthca_free(&dev->mr_table.mpt_alloc, key_to_hw_index(dev, lkey)); 547 } 548 549 void mthca_free_mr(struct mthca_dev *dev, struct mthca_mr *mr) 550 { 551 int err; 552 553 err = mthca_HW2SW_MPT(dev, NULL, 554 key_to_hw_index(dev, mr->ibmr.lkey) & 555 (dev->limits.num_mpts - 1)); 556 if (err) 557 mthca_warn(dev, "HW2SW_MPT failed (%d)\n", err); 558 559 mthca_free_region(dev, mr->ibmr.lkey); 560 mthca_free_mtt(dev, mr->mtt); 561 } 562 563 int mthca_init_mr_table(struct mthca_dev *dev) 564 { 565 phys_addr_t addr; 566 int mpts, mtts, err, i; 567 568 err = mthca_alloc_init(&dev->mr_table.mpt_alloc, 569 dev->limits.num_mpts, 570 ~0, dev->limits.reserved_mrws); 571 if (err) 572 return err; 573 574 if (!mthca_is_memfree(dev) && 575 (dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) 576 dev->limits.fmr_reserved_mtts = 0; 577 else 578 dev->mthca_flags |= MTHCA_FLAG_FMR; 579 580 if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT) 581 mthca_dbg(dev, "Memory key throughput optimization activated.\n"); 582 583 err = mthca_buddy_init(&dev->mr_table.mtt_buddy, 584 fls(dev->limits.num_mtt_segs - 1)); 585 586 if (err) 587 goto err_mtt_buddy; 588 589 dev->mr_table.tavor_fmr.mpt_base = NULL; 590 dev->mr_table.tavor_fmr.mtt_base = NULL; 591 592 if (dev->limits.fmr_reserved_mtts) { 593 i = fls(dev->limits.fmr_reserved_mtts - 1); 594 595 if (i >= 31) { 596 mthca_warn(dev, "Unable to reserve 2^31 FMR MTTs.\n"); 597 err = -EINVAL; 598 goto err_fmr_mpt; 599 } 600 mpts = mtts = 1 << i; 601 } else { 602 mtts = dev->limits.num_mtt_segs; 603 mpts = dev->limits.num_mpts; 604 } 605 606 if (!mthca_is_memfree(dev) && 607 (dev->mthca_flags & MTHCA_FLAG_FMR)) { 608 609 addr = pci_resource_start(dev->pdev, 4) + 610 ((pci_resource_len(dev->pdev, 4) - 1) & 611 dev->mr_table.mpt_base); 612 613 dev->mr_table.tavor_fmr.mpt_base = 614 ioremap(addr, mpts * sizeof(struct mthca_mpt_entry)); 615 616 if (!dev->mr_table.tavor_fmr.mpt_base) { 617 mthca_warn(dev, "MPT ioremap for FMR failed.\n"); 618 err = -ENOMEM; 619 goto err_fmr_mpt; 620 } 621 622 addr = pci_resource_start(dev->pdev, 4) + 623 ((pci_resource_len(dev->pdev, 4) - 1) & 624 dev->mr_table.mtt_base); 625 626 dev->mr_table.tavor_fmr.mtt_base = 627 ioremap(addr, mtts * dev->limits.mtt_seg_size); 628 if (!dev->mr_table.tavor_fmr.mtt_base) { 629 mthca_warn(dev, "MTT ioremap for FMR failed.\n"); 630 err = -ENOMEM; 631 goto err_fmr_mtt; 632 } 633 } 634 635 if (dev->limits.fmr_reserved_mtts) { 636 err = mthca_buddy_init(&dev->mr_table.tavor_fmr.mtt_buddy, fls(mtts - 1)); 637 if (err) 638 goto err_fmr_mtt_buddy; 639 640 /* Prevent regular MRs from using FMR keys */ 641 err = mthca_buddy_alloc(&dev->mr_table.mtt_buddy, fls(mtts - 1)); 642 if (err) 643 goto err_reserve_fmr; 644 645 dev->mr_table.fmr_mtt_buddy = 646 &dev->mr_table.tavor_fmr.mtt_buddy; 647 } else 648 dev->mr_table.fmr_mtt_buddy = &dev->mr_table.mtt_buddy; 649 650 /* FMR table is always the first, take reserved MTTs out of there */ 651 if (dev->limits.reserved_mtts) { 652 i = fls(dev->limits.reserved_mtts - 1); 653 654 if (mthca_alloc_mtt_range(dev, i, 655 dev->mr_table.fmr_mtt_buddy) == -1) { 656 mthca_warn(dev, "MTT table of order %d is too small.\n", 657 dev->mr_table.fmr_mtt_buddy->max_order); 658 err = -ENOMEM; 659 goto err_reserve_mtts; 660 } 661 } 662 663 return 0; 664 665 err_reserve_mtts: 666 err_reserve_fmr: 667 if (dev->limits.fmr_reserved_mtts) 668 mthca_buddy_cleanup(&dev->mr_table.tavor_fmr.mtt_buddy); 669 670 err_fmr_mtt_buddy: 671 if (dev->mr_table.tavor_fmr.mtt_base) 672 iounmap(dev->mr_table.tavor_fmr.mtt_base); 673 674 err_fmr_mtt: 675 if (dev->mr_table.tavor_fmr.mpt_base) 676 iounmap(dev->mr_table.tavor_fmr.mpt_base); 677 678 err_fmr_mpt: 679 mthca_buddy_cleanup(&dev->mr_table.mtt_buddy); 680 681 err_mtt_buddy: 682 mthca_alloc_cleanup(&dev->mr_table.mpt_alloc); 683 684 return err; 685 } 686 687 void mthca_cleanup_mr_table(struct mthca_dev *dev) 688 { 689 /* XXX check if any MRs are still allocated? */ 690 if (dev->limits.fmr_reserved_mtts) 691 mthca_buddy_cleanup(&dev->mr_table.tavor_fmr.mtt_buddy); 692 693 mthca_buddy_cleanup(&dev->mr_table.mtt_buddy); 694 695 if (dev->mr_table.tavor_fmr.mtt_base) 696 iounmap(dev->mr_table.tavor_fmr.mtt_base); 697 if (dev->mr_table.tavor_fmr.mpt_base) 698 iounmap(dev->mr_table.tavor_fmr.mpt_base); 699 700 mthca_alloc_cleanup(&dev->mr_table.mpt_alloc); 701 } 702