Thomas Hellstrom | ba4e7d9 | 2009-06-10 15:20:19 +0200 | [diff] [blame] | 1 | /************************************************************************** |
| 2 | * |
| 3 | * Copyright (c) 2007-2009 VMware, Inc., Palo Alto, CA., USA |
| 4 | * All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the |
| 8 | * "Software"), to deal in the Software without restriction, including |
| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
| 11 | * permit persons to whom the Software is furnished to do so, subject to |
| 12 | * the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice (including the |
| 15 | * next paragraph) shall be included in all copies or substantial portions |
| 16 | * of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| 21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| 22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| 23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| 24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 25 | * |
| 26 | **************************************************************************/ |
| 27 | /* |
| 28 | * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com> |
| 29 | */ |
| 30 | |
| 31 | #include "ttm/ttm_bo_driver.h" |
| 32 | #include "ttm/ttm_placement.h" |
| 33 | #include <linux/io.h> |
| 34 | #include <linux/highmem.h> |
| 35 | #include <linux/wait.h> |
| 36 | #include <linux/vmalloc.h> |
Thomas Hellstrom | ba4e7d9 | 2009-06-10 15:20:19 +0200 | [diff] [blame] | 37 | #include <linux/module.h> |
| 38 | |
| 39 | void ttm_bo_free_old_node(struct ttm_buffer_object *bo) |
| 40 | { |
| 41 | struct ttm_mem_reg *old_mem = &bo->mem; |
| 42 | |
| 43 | if (old_mem->mm_node) { |
| 44 | spin_lock(&bo->bdev->lru_lock); |
| 45 | drm_mm_put_block(old_mem->mm_node); |
| 46 | spin_unlock(&bo->bdev->lru_lock); |
| 47 | } |
| 48 | old_mem->mm_node = NULL; |
| 49 | } |
| 50 | |
| 51 | int ttm_bo_move_ttm(struct ttm_buffer_object *bo, |
| 52 | bool evict, bool no_wait, struct ttm_mem_reg *new_mem) |
| 53 | { |
| 54 | struct ttm_tt *ttm = bo->ttm; |
| 55 | struct ttm_mem_reg *old_mem = &bo->mem; |
| 56 | uint32_t save_flags = old_mem->placement; |
| 57 | int ret; |
| 58 | |
| 59 | if (old_mem->mem_type != TTM_PL_SYSTEM) { |
| 60 | ttm_tt_unbind(ttm); |
| 61 | ttm_bo_free_old_node(bo); |
| 62 | ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM, |
| 63 | TTM_PL_MASK_MEM); |
| 64 | old_mem->mem_type = TTM_PL_SYSTEM; |
| 65 | save_flags = old_mem->placement; |
| 66 | } |
| 67 | |
| 68 | ret = ttm_tt_set_placement_caching(ttm, new_mem->placement); |
| 69 | if (unlikely(ret != 0)) |
| 70 | return ret; |
| 71 | |
| 72 | if (new_mem->mem_type != TTM_PL_SYSTEM) { |
| 73 | ret = ttm_tt_bind(ttm, new_mem); |
| 74 | if (unlikely(ret != 0)) |
| 75 | return ret; |
| 76 | } |
| 77 | |
| 78 | *old_mem = *new_mem; |
| 79 | new_mem->mm_node = NULL; |
| 80 | ttm_flag_masked(&save_flags, new_mem->placement, TTM_PL_MASK_MEMTYPE); |
| 81 | return 0; |
| 82 | } |
| 83 | EXPORT_SYMBOL(ttm_bo_move_ttm); |
| 84 | |
| 85 | int ttm_mem_reg_ioremap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, |
| 86 | void **virtual) |
| 87 | { |
| 88 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
| 89 | unsigned long bus_offset; |
| 90 | unsigned long bus_size; |
| 91 | unsigned long bus_base; |
| 92 | int ret; |
| 93 | void *addr; |
| 94 | |
| 95 | *virtual = NULL; |
| 96 | ret = ttm_bo_pci_offset(bdev, mem, &bus_base, &bus_offset, &bus_size); |
| 97 | if (ret || bus_size == 0) |
| 98 | return ret; |
| 99 | |
| 100 | if (!(man->flags & TTM_MEMTYPE_FLAG_NEEDS_IOREMAP)) |
| 101 | addr = (void *)(((u8 *) man->io_addr) + bus_offset); |
| 102 | else { |
| 103 | if (mem->placement & TTM_PL_FLAG_WC) |
| 104 | addr = ioremap_wc(bus_base + bus_offset, bus_size); |
| 105 | else |
| 106 | addr = ioremap_nocache(bus_base + bus_offset, bus_size); |
| 107 | if (!addr) |
| 108 | return -ENOMEM; |
| 109 | } |
| 110 | *virtual = addr; |
| 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | void ttm_mem_reg_iounmap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, |
| 115 | void *virtual) |
| 116 | { |
| 117 | struct ttm_mem_type_manager *man; |
| 118 | |
| 119 | man = &bdev->man[mem->mem_type]; |
| 120 | |
| 121 | if (virtual && (man->flags & TTM_MEMTYPE_FLAG_NEEDS_IOREMAP)) |
| 122 | iounmap(virtual); |
| 123 | } |
| 124 | |
| 125 | static int ttm_copy_io_page(void *dst, void *src, unsigned long page) |
| 126 | { |
| 127 | uint32_t *dstP = |
| 128 | (uint32_t *) ((unsigned long)dst + (page << PAGE_SHIFT)); |
| 129 | uint32_t *srcP = |
| 130 | (uint32_t *) ((unsigned long)src + (page << PAGE_SHIFT)); |
| 131 | |
| 132 | int i; |
| 133 | for (i = 0; i < PAGE_SIZE / sizeof(uint32_t); ++i) |
| 134 | iowrite32(ioread32(srcP++), dstP++); |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src, |
Thomas Hellstrom | 542c6f6 | 2009-07-24 09:57:34 +0200 | [diff] [blame] | 139 | unsigned long page, |
| 140 | pgprot_t prot) |
Thomas Hellstrom | ba4e7d9 | 2009-06-10 15:20:19 +0200 | [diff] [blame] | 141 | { |
| 142 | struct page *d = ttm_tt_get_page(ttm, page); |
| 143 | void *dst; |
| 144 | |
| 145 | if (!d) |
| 146 | return -ENOMEM; |
| 147 | |
| 148 | src = (void *)((unsigned long)src + (page << PAGE_SHIFT)); |
Thomas Hellstrom | 542c6f6 | 2009-07-24 09:57:34 +0200 | [diff] [blame] | 149 | |
| 150 | #ifdef CONFIG_X86 |
| 151 | dst = kmap_atomic_prot(d, KM_USER0, prot); |
| 152 | #else |
| 153 | if (prot != PAGE_KERNEL) |
| 154 | dst = vmap(&d, 1, 0, prot); |
| 155 | else |
| 156 | dst = kmap(d); |
| 157 | #endif |
Thomas Hellstrom | ba4e7d9 | 2009-06-10 15:20:19 +0200 | [diff] [blame] | 158 | if (!dst) |
| 159 | return -ENOMEM; |
| 160 | |
| 161 | memcpy_fromio(dst, src, PAGE_SIZE); |
Thomas Hellstrom | 542c6f6 | 2009-07-24 09:57:34 +0200 | [diff] [blame] | 162 | |
| 163 | #ifdef CONFIG_X86 |
| 164 | kunmap_atomic(dst, KM_USER0); |
| 165 | #else |
| 166 | if (prot != PAGE_KERNEL) |
| 167 | vunmap(dst); |
| 168 | else |
| 169 | kunmap(d); |
| 170 | #endif |
| 171 | |
Thomas Hellstrom | ba4e7d9 | 2009-06-10 15:20:19 +0200 | [diff] [blame] | 172 | return 0; |
| 173 | } |
| 174 | |
| 175 | static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst, |
Thomas Hellstrom | 542c6f6 | 2009-07-24 09:57:34 +0200 | [diff] [blame] | 176 | unsigned long page, |
| 177 | pgprot_t prot) |
Thomas Hellstrom | ba4e7d9 | 2009-06-10 15:20:19 +0200 | [diff] [blame] | 178 | { |
| 179 | struct page *s = ttm_tt_get_page(ttm, page); |
| 180 | void *src; |
| 181 | |
| 182 | if (!s) |
| 183 | return -ENOMEM; |
| 184 | |
| 185 | dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT)); |
Thomas Hellstrom | 542c6f6 | 2009-07-24 09:57:34 +0200 | [diff] [blame] | 186 | #ifdef CONFIG_X86 |
| 187 | src = kmap_atomic_prot(s, KM_USER0, prot); |
| 188 | #else |
| 189 | if (prot != PAGE_KERNEL) |
| 190 | src = vmap(&s, 1, 0, prot); |
| 191 | else |
| 192 | src = kmap(s); |
| 193 | #endif |
Thomas Hellstrom | ba4e7d9 | 2009-06-10 15:20:19 +0200 | [diff] [blame] | 194 | if (!src) |
| 195 | return -ENOMEM; |
| 196 | |
| 197 | memcpy_toio(dst, src, PAGE_SIZE); |
Thomas Hellstrom | 542c6f6 | 2009-07-24 09:57:34 +0200 | [diff] [blame] | 198 | |
| 199 | #ifdef CONFIG_X86 |
| 200 | kunmap_atomic(src, KM_USER0); |
| 201 | #else |
| 202 | if (prot != PAGE_KERNEL) |
| 203 | vunmap(src); |
| 204 | else |
| 205 | kunmap(s); |
| 206 | #endif |
| 207 | |
Thomas Hellstrom | ba4e7d9 | 2009-06-10 15:20:19 +0200 | [diff] [blame] | 208 | return 0; |
| 209 | } |
| 210 | |
| 211 | int ttm_bo_move_memcpy(struct ttm_buffer_object *bo, |
| 212 | bool evict, bool no_wait, struct ttm_mem_reg *new_mem) |
| 213 | { |
| 214 | struct ttm_bo_device *bdev = bo->bdev; |
| 215 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; |
| 216 | struct ttm_tt *ttm = bo->ttm; |
| 217 | struct ttm_mem_reg *old_mem = &bo->mem; |
| 218 | struct ttm_mem_reg old_copy = *old_mem; |
| 219 | void *old_iomap; |
| 220 | void *new_iomap; |
| 221 | int ret; |
| 222 | uint32_t save_flags = old_mem->placement; |
| 223 | unsigned long i; |
| 224 | unsigned long page; |
| 225 | unsigned long add = 0; |
| 226 | int dir; |
| 227 | |
| 228 | ret = ttm_mem_reg_ioremap(bdev, old_mem, &old_iomap); |
| 229 | if (ret) |
| 230 | return ret; |
| 231 | ret = ttm_mem_reg_ioremap(bdev, new_mem, &new_iomap); |
| 232 | if (ret) |
| 233 | goto out; |
| 234 | |
| 235 | if (old_iomap == NULL && new_iomap == NULL) |
| 236 | goto out2; |
| 237 | if (old_iomap == NULL && ttm == NULL) |
| 238 | goto out2; |
| 239 | |
| 240 | add = 0; |
| 241 | dir = 1; |
| 242 | |
| 243 | if ((old_mem->mem_type == new_mem->mem_type) && |
| 244 | (new_mem->mm_node->start < |
| 245 | old_mem->mm_node->start + old_mem->mm_node->size)) { |
| 246 | dir = -1; |
| 247 | add = new_mem->num_pages - 1; |
| 248 | } |
| 249 | |
| 250 | for (i = 0; i < new_mem->num_pages; ++i) { |
| 251 | page = i * dir + add; |
Thomas Hellstrom | 542c6f6 | 2009-07-24 09:57:34 +0200 | [diff] [blame] | 252 | if (old_iomap == NULL) { |
| 253 | pgprot_t prot = ttm_io_prot(old_mem->placement, |
| 254 | PAGE_KERNEL); |
| 255 | ret = ttm_copy_ttm_io_page(ttm, new_iomap, page, |
| 256 | prot); |
| 257 | } else if (new_iomap == NULL) { |
| 258 | pgprot_t prot = ttm_io_prot(new_mem->placement, |
| 259 | PAGE_KERNEL); |
| 260 | ret = ttm_copy_io_ttm_page(ttm, old_iomap, page, |
| 261 | prot); |
| 262 | } else |
Thomas Hellstrom | ba4e7d9 | 2009-06-10 15:20:19 +0200 | [diff] [blame] | 263 | ret = ttm_copy_io_page(new_iomap, old_iomap, page); |
| 264 | if (ret) |
| 265 | goto out1; |
| 266 | } |
| 267 | mb(); |
| 268 | out2: |
| 269 | ttm_bo_free_old_node(bo); |
| 270 | |
| 271 | *old_mem = *new_mem; |
| 272 | new_mem->mm_node = NULL; |
| 273 | ttm_flag_masked(&save_flags, new_mem->placement, TTM_PL_MASK_MEMTYPE); |
| 274 | |
| 275 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && (ttm != NULL)) { |
| 276 | ttm_tt_unbind(ttm); |
| 277 | ttm_tt_destroy(ttm); |
| 278 | bo->ttm = NULL; |
| 279 | } |
| 280 | |
| 281 | out1: |
| 282 | ttm_mem_reg_iounmap(bdev, new_mem, new_iomap); |
| 283 | out: |
| 284 | ttm_mem_reg_iounmap(bdev, &old_copy, old_iomap); |
| 285 | return ret; |
| 286 | } |
| 287 | EXPORT_SYMBOL(ttm_bo_move_memcpy); |
| 288 | |
| 289 | static void ttm_transfered_destroy(struct ttm_buffer_object *bo) |
| 290 | { |
| 291 | kfree(bo); |
| 292 | } |
| 293 | |
| 294 | /** |
| 295 | * ttm_buffer_object_transfer |
| 296 | * |
| 297 | * @bo: A pointer to a struct ttm_buffer_object. |
| 298 | * @new_obj: A pointer to a pointer to a newly created ttm_buffer_object, |
| 299 | * holding the data of @bo with the old placement. |
| 300 | * |
| 301 | * This is a utility function that may be called after an accelerated move |
| 302 | * has been scheduled. A new buffer object is created as a placeholder for |
| 303 | * the old data while it's being copied. When that buffer object is idle, |
| 304 | * it can be destroyed, releasing the space of the old placement. |
| 305 | * Returns: |
| 306 | * !0: Failure. |
| 307 | */ |
| 308 | |
| 309 | static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, |
| 310 | struct ttm_buffer_object **new_obj) |
| 311 | { |
| 312 | struct ttm_buffer_object *fbo; |
| 313 | struct ttm_bo_device *bdev = bo->bdev; |
| 314 | struct ttm_bo_driver *driver = bdev->driver; |
| 315 | |
| 316 | fbo = kzalloc(sizeof(*fbo), GFP_KERNEL); |
| 317 | if (!fbo) |
| 318 | return -ENOMEM; |
| 319 | |
| 320 | *fbo = *bo; |
| 321 | |
| 322 | /** |
| 323 | * Fix up members that we shouldn't copy directly: |
| 324 | * TODO: Explicit member copy would probably be better here. |
| 325 | */ |
| 326 | |
| 327 | spin_lock_init(&fbo->lock); |
| 328 | init_waitqueue_head(&fbo->event_queue); |
| 329 | INIT_LIST_HEAD(&fbo->ddestroy); |
| 330 | INIT_LIST_HEAD(&fbo->lru); |
| 331 | INIT_LIST_HEAD(&fbo->swap); |
| 332 | fbo->vm_node = NULL; |
| 333 | |
| 334 | fbo->sync_obj = driver->sync_obj_ref(bo->sync_obj); |
| 335 | if (fbo->mem.mm_node) |
| 336 | fbo->mem.mm_node->private = (void *)fbo; |
| 337 | kref_init(&fbo->list_kref); |
| 338 | kref_init(&fbo->kref); |
| 339 | fbo->destroy = &ttm_transfered_destroy; |
| 340 | |
| 341 | *new_obj = fbo; |
| 342 | return 0; |
| 343 | } |
| 344 | |
| 345 | pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp) |
| 346 | { |
| 347 | #if defined(__i386__) || defined(__x86_64__) |
| 348 | if (caching_flags & TTM_PL_FLAG_WC) |
| 349 | tmp = pgprot_writecombine(tmp); |
| 350 | else if (boot_cpu_data.x86 > 3) |
| 351 | tmp = pgprot_noncached(tmp); |
| 352 | |
| 353 | #elif defined(__powerpc__) |
| 354 | if (!(caching_flags & TTM_PL_FLAG_CACHED)) { |
| 355 | pgprot_val(tmp) |= _PAGE_NO_CACHE; |
| 356 | if (caching_flags & TTM_PL_FLAG_UNCACHED) |
| 357 | pgprot_val(tmp) |= _PAGE_GUARDED; |
| 358 | } |
| 359 | #endif |
| 360 | #if defined(__ia64__) |
| 361 | if (caching_flags & TTM_PL_FLAG_WC) |
| 362 | tmp = pgprot_writecombine(tmp); |
| 363 | else |
| 364 | tmp = pgprot_noncached(tmp); |
| 365 | #endif |
| 366 | #if defined(__sparc__) |
| 367 | if (!(caching_flags & TTM_PL_FLAG_CACHED)) |
| 368 | tmp = pgprot_noncached(tmp); |
| 369 | #endif |
| 370 | return tmp; |
| 371 | } |
| 372 | |
| 373 | static int ttm_bo_ioremap(struct ttm_buffer_object *bo, |
| 374 | unsigned long bus_base, |
| 375 | unsigned long bus_offset, |
| 376 | unsigned long bus_size, |
| 377 | struct ttm_bo_kmap_obj *map) |
| 378 | { |
| 379 | struct ttm_bo_device *bdev = bo->bdev; |
| 380 | struct ttm_mem_reg *mem = &bo->mem; |
| 381 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
| 382 | |
| 383 | if (!(man->flags & TTM_MEMTYPE_FLAG_NEEDS_IOREMAP)) { |
| 384 | map->bo_kmap_type = ttm_bo_map_premapped; |
| 385 | map->virtual = (void *)(((u8 *) man->io_addr) + bus_offset); |
| 386 | } else { |
| 387 | map->bo_kmap_type = ttm_bo_map_iomap; |
| 388 | if (mem->placement & TTM_PL_FLAG_WC) |
| 389 | map->virtual = ioremap_wc(bus_base + bus_offset, |
| 390 | bus_size); |
| 391 | else |
| 392 | map->virtual = ioremap_nocache(bus_base + bus_offset, |
| 393 | bus_size); |
| 394 | } |
| 395 | return (!map->virtual) ? -ENOMEM : 0; |
| 396 | } |
| 397 | |
| 398 | static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo, |
| 399 | unsigned long start_page, |
| 400 | unsigned long num_pages, |
| 401 | struct ttm_bo_kmap_obj *map) |
| 402 | { |
| 403 | struct ttm_mem_reg *mem = &bo->mem; pgprot_t prot; |
| 404 | struct ttm_tt *ttm = bo->ttm; |
| 405 | struct page *d; |
| 406 | int i; |
| 407 | |
| 408 | BUG_ON(!ttm); |
| 409 | if (num_pages == 1 && (mem->placement & TTM_PL_FLAG_CACHED)) { |
| 410 | /* |
| 411 | * We're mapping a single page, and the desired |
| 412 | * page protection is consistent with the bo. |
| 413 | */ |
| 414 | |
| 415 | map->bo_kmap_type = ttm_bo_map_kmap; |
| 416 | map->page = ttm_tt_get_page(ttm, start_page); |
| 417 | map->virtual = kmap(map->page); |
| 418 | } else { |
| 419 | /* |
| 420 | * Populate the part we're mapping; |
| 421 | */ |
| 422 | for (i = start_page; i < start_page + num_pages; ++i) { |
| 423 | d = ttm_tt_get_page(ttm, i); |
| 424 | if (!d) |
| 425 | return -ENOMEM; |
| 426 | } |
| 427 | |
| 428 | /* |
| 429 | * We need to use vmap to get the desired page protection |
| 430 | * or to make the buffer object look contigous. |
| 431 | */ |
| 432 | prot = (mem->placement & TTM_PL_FLAG_CACHED) ? |
| 433 | PAGE_KERNEL : |
| 434 | ttm_io_prot(mem->placement, PAGE_KERNEL); |
| 435 | map->bo_kmap_type = ttm_bo_map_vmap; |
| 436 | map->virtual = vmap(ttm->pages + start_page, num_pages, |
| 437 | 0, prot); |
| 438 | } |
| 439 | return (!map->virtual) ? -ENOMEM : 0; |
| 440 | } |
| 441 | |
| 442 | int ttm_bo_kmap(struct ttm_buffer_object *bo, |
| 443 | unsigned long start_page, unsigned long num_pages, |
| 444 | struct ttm_bo_kmap_obj *map) |
| 445 | { |
| 446 | int ret; |
| 447 | unsigned long bus_base; |
| 448 | unsigned long bus_offset; |
| 449 | unsigned long bus_size; |
| 450 | |
| 451 | BUG_ON(!list_empty(&bo->swap)); |
| 452 | map->virtual = NULL; |
| 453 | if (num_pages > bo->num_pages) |
| 454 | return -EINVAL; |
| 455 | if (start_page > bo->num_pages) |
| 456 | return -EINVAL; |
| 457 | #if 0 |
| 458 | if (num_pages > 1 && !DRM_SUSER(DRM_CURPROC)) |
| 459 | return -EPERM; |
| 460 | #endif |
| 461 | ret = ttm_bo_pci_offset(bo->bdev, &bo->mem, &bus_base, |
| 462 | &bus_offset, &bus_size); |
| 463 | if (ret) |
| 464 | return ret; |
| 465 | if (bus_size == 0) { |
| 466 | return ttm_bo_kmap_ttm(bo, start_page, num_pages, map); |
| 467 | } else { |
| 468 | bus_offset += start_page << PAGE_SHIFT; |
| 469 | bus_size = num_pages << PAGE_SHIFT; |
| 470 | return ttm_bo_ioremap(bo, bus_base, bus_offset, bus_size, map); |
| 471 | } |
| 472 | } |
| 473 | EXPORT_SYMBOL(ttm_bo_kmap); |
| 474 | |
| 475 | void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map) |
| 476 | { |
| 477 | if (!map->virtual) |
| 478 | return; |
| 479 | switch (map->bo_kmap_type) { |
| 480 | case ttm_bo_map_iomap: |
| 481 | iounmap(map->virtual); |
| 482 | break; |
| 483 | case ttm_bo_map_vmap: |
| 484 | vunmap(map->virtual); |
| 485 | break; |
| 486 | case ttm_bo_map_kmap: |
| 487 | kunmap(map->page); |
| 488 | break; |
| 489 | case ttm_bo_map_premapped: |
| 490 | break; |
| 491 | default: |
| 492 | BUG(); |
| 493 | } |
| 494 | map->virtual = NULL; |
| 495 | map->page = NULL; |
| 496 | } |
| 497 | EXPORT_SYMBOL(ttm_bo_kunmap); |
| 498 | |
| 499 | int ttm_bo_pfn_prot(struct ttm_buffer_object *bo, |
| 500 | unsigned long dst_offset, |
| 501 | unsigned long *pfn, pgprot_t *prot) |
| 502 | { |
| 503 | struct ttm_mem_reg *mem = &bo->mem; |
| 504 | struct ttm_bo_device *bdev = bo->bdev; |
| 505 | unsigned long bus_offset; |
| 506 | unsigned long bus_size; |
| 507 | unsigned long bus_base; |
| 508 | int ret; |
| 509 | ret = ttm_bo_pci_offset(bdev, mem, &bus_base, &bus_offset, |
| 510 | &bus_size); |
| 511 | if (ret) |
| 512 | return -EINVAL; |
| 513 | if (bus_size != 0) |
| 514 | *pfn = (bus_base + bus_offset + dst_offset) >> PAGE_SHIFT; |
| 515 | else |
| 516 | if (!bo->ttm) |
| 517 | return -EINVAL; |
| 518 | else |
| 519 | *pfn = page_to_pfn(ttm_tt_get_page(bo->ttm, |
| 520 | dst_offset >> |
| 521 | PAGE_SHIFT)); |
| 522 | *prot = (mem->placement & TTM_PL_FLAG_CACHED) ? |
| 523 | PAGE_KERNEL : ttm_io_prot(mem->placement, PAGE_KERNEL); |
| 524 | |
| 525 | return 0; |
| 526 | } |
| 527 | |
| 528 | int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, |
| 529 | void *sync_obj, |
| 530 | void *sync_obj_arg, |
| 531 | bool evict, bool no_wait, |
| 532 | struct ttm_mem_reg *new_mem) |
| 533 | { |
| 534 | struct ttm_bo_device *bdev = bo->bdev; |
| 535 | struct ttm_bo_driver *driver = bdev->driver; |
| 536 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; |
| 537 | struct ttm_mem_reg *old_mem = &bo->mem; |
| 538 | int ret; |
| 539 | uint32_t save_flags = old_mem->placement; |
| 540 | struct ttm_buffer_object *ghost_obj; |
| 541 | void *tmp_obj = NULL; |
| 542 | |
| 543 | spin_lock(&bo->lock); |
| 544 | if (bo->sync_obj) { |
| 545 | tmp_obj = bo->sync_obj; |
| 546 | bo->sync_obj = NULL; |
| 547 | } |
| 548 | bo->sync_obj = driver->sync_obj_ref(sync_obj); |
| 549 | bo->sync_obj_arg = sync_obj_arg; |
| 550 | if (evict) { |
| 551 | ret = ttm_bo_wait(bo, false, false, false); |
| 552 | spin_unlock(&bo->lock); |
Thomas Hellstrom | 4677f15 | 2009-07-21 17:45:13 +0200 | [diff] [blame] | 553 | if (tmp_obj) |
| 554 | driver->sync_obj_unref(&tmp_obj); |
Thomas Hellstrom | ba4e7d9 | 2009-06-10 15:20:19 +0200 | [diff] [blame] | 555 | if (ret) |
| 556 | return ret; |
| 557 | |
| 558 | ttm_bo_free_old_node(bo); |
| 559 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
| 560 | (bo->ttm != NULL)) { |
| 561 | ttm_tt_unbind(bo->ttm); |
| 562 | ttm_tt_destroy(bo->ttm); |
| 563 | bo->ttm = NULL; |
| 564 | } |
| 565 | } else { |
| 566 | /** |
| 567 | * This should help pipeline ordinary buffer moves. |
| 568 | * |
| 569 | * Hang old buffer memory on a new buffer object, |
| 570 | * and leave it to be released when the GPU |
| 571 | * operation has completed. |
| 572 | */ |
| 573 | |
| 574 | set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); |
| 575 | spin_unlock(&bo->lock); |
Thomas Hellstrom | 4677f15 | 2009-07-21 17:45:13 +0200 | [diff] [blame] | 576 | if (tmp_obj) |
| 577 | driver->sync_obj_unref(&tmp_obj); |
Thomas Hellstrom | ba4e7d9 | 2009-06-10 15:20:19 +0200 | [diff] [blame] | 578 | |
| 579 | ret = ttm_buffer_object_transfer(bo, &ghost_obj); |
| 580 | if (ret) |
| 581 | return ret; |
| 582 | |
| 583 | /** |
| 584 | * If we're not moving to fixed memory, the TTM object |
| 585 | * needs to stay alive. Otherwhise hang it on the ghost |
| 586 | * bo to be unbound and destroyed. |
| 587 | */ |
| 588 | |
| 589 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) |
| 590 | ghost_obj->ttm = NULL; |
| 591 | else |
| 592 | bo->ttm = NULL; |
| 593 | |
| 594 | ttm_bo_unreserve(ghost_obj); |
| 595 | ttm_bo_unref(&ghost_obj); |
| 596 | } |
| 597 | |
| 598 | *old_mem = *new_mem; |
| 599 | new_mem->mm_node = NULL; |
| 600 | ttm_flag_masked(&save_flags, new_mem->placement, TTM_PL_MASK_MEMTYPE); |
| 601 | return 0; |
| 602 | } |
| 603 | EXPORT_SYMBOL(ttm_bo_move_accel_cleanup); |