Lines Matching refs:ttm
39 #include <drm/ttm/ttm_bo_driver.h>
40 #include <drm/ttm/ttm_page_alloc.h>
41 #include <drm/ttm/ttm_set_memory.h>
44 * Allocates a ttm structure for the given BO.
53 if (bo->ttm)
77 bo->ttm = bdev->driver->ttm_tt_create(bo, page_flags);
78 if (unlikely(bo->ttm == NULL))
85 * Allocates storage for pointers to the pages that back the ttm.
87 static int ttm_tt_alloc_page_directory(struct ttm_tt *ttm)
89 ttm->pages = kvmalloc_array(ttm->num_pages, sizeof(void*),
91 if (!ttm->pages)
96 static int ttm_dma_tt_alloc_page_directory(struct ttm_dma_tt *ttm)
98 ttm->ttm.pages = kvmalloc_array(ttm->ttm.num_pages,
99 sizeof(*ttm->ttm.pages) +
100 sizeof(*ttm->dma_address),
102 if (!ttm->ttm.pages)
104 ttm->dma_address = (void *) (ttm->ttm.pages + ttm->ttm.num_pages);
108 static int ttm_sg_tt_alloc_page_directory(struct ttm_dma_tt *ttm)
110 ttm->dma_address = kvmalloc_array(ttm->ttm.num_pages,
111 sizeof(*ttm->dma_address),
113 if (!ttm->dma_address)
146 * for range of pages in a ttm.
149 static int ttm_tt_set_caching(struct ttm_tt *ttm,
156 if (ttm->caching_state == c_state)
159 if (!ttm_tt_is_populated(ttm)) {
161 ttm->caching_state = c_state;
165 if (ttm->caching_state == tt_cached)
166 drm_clflush_pages(ttm->pages, ttm->num_pages);
168 for (i = 0; i < ttm->num_pages; ++i) {
169 cur_page = ttm->pages[i];
172 ttm->caching_state,
179 ttm->caching_state = c_state;
185 cur_page = ttm->pages[j];
188 ttm->caching_state);
195 int ttm_tt_set_placement_caching(struct ttm_tt *ttm, uint32_t placement)
206 return ttm_tt_set_caching(ttm, state);
210 void ttm_tt_destroy_common(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
212 ttm_tt_unpopulate(bdev, ttm);
214 if (!(ttm->page_flags & TTM_PAGE_FLAG_PERSISTENT_SWAP) &&
215 ttm->swap_storage)
216 fput(ttm->swap_storage);
218 ttm->swap_storage = NULL;
222 void ttm_tt_destroy(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
224 bdev->driver->ttm_tt_destroy(bdev, ttm);
227 static void ttm_tt_init_fields(struct ttm_tt *ttm,
231 ttm->num_pages = bo->num_pages;
232 ttm->caching_state = tt_cached;
233 ttm->page_flags = page_flags;
234 ttm_tt_set_unpopulated(ttm);
235 ttm->swap_storage = NULL;
236 ttm->sg = bo->sg;
239 int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo,
242 ttm_tt_init_fields(ttm, bo, page_flags);
244 if (ttm_tt_alloc_page_directory(ttm)) {
252 void ttm_tt_fini(struct ttm_tt *ttm)
254 kvfree(ttm->pages);
255 ttm->pages = NULL;
262 struct ttm_tt *ttm = &ttm_dma->ttm;
264 ttm_tt_init_fields(ttm, bo, page_flags);
278 struct ttm_tt *ttm = &ttm_dma->ttm;
281 ttm_tt_init_fields(ttm, bo, page_flags);
298 struct ttm_tt *ttm = &ttm_dma->ttm;
300 if (ttm->pages)
301 kvfree(ttm->pages);
304 ttm->pages = NULL;
309 int ttm_tt_swapin(struct ttm_tt *ttm)
318 swap_storage = ttm->swap_storage;
323 for (i = 0; i < ttm->num_pages; ++i) {
326 gfp_mask |= (ttm->page_flags & TTM_PAGE_FLAG_NO_RETRY ? __GFP_RETRY_MAYFAIL : 0);
333 to_page = ttm->pages[i];
341 if (!(ttm->page_flags & TTM_PAGE_FLAG_PERSISTENT_SWAP))
343 ttm->swap_storage = NULL;
344 ttm->page_flags &= ~TTM_PAGE_FLAG_SWAPPED;
352 struct ttm_tt *ttm, struct file *persistent_swap_storage)
361 BUG_ON(ttm->caching_state != tt_cached);
364 swap_storage = shmem_file_setup("ttm swap",
365 ttm->num_pages << PAGE_SHIFT,
377 for (i = 0; i < ttm->num_pages; ++i) {
380 gfp_mask |= (ttm->page_flags & TTM_PAGE_FLAG_NO_RETRY ? __GFP_RETRY_MAYFAIL : 0);
382 from_page = ttm->pages[i];
397 ttm_tt_unpopulate(bdev, ttm);
398 ttm->swap_storage = swap_storage;
399 ttm->page_flags |= TTM_PAGE_FLAG_SWAPPED;
401 ttm->page_flags |= TTM_PAGE_FLAG_PERSISTENT_SWAP;
411 static void ttm_tt_add_mapping(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
415 if (ttm->page_flags & TTM_PAGE_FLAG_SG)
418 for (i = 0; i < ttm->num_pages; ++i)
419 ttm->pages[i]->mapping = bdev->dev_mapping;
423 struct ttm_tt *ttm, struct ttm_operation_ctx *ctx)
427 if (!ttm)
430 if (ttm_tt_is_populated(ttm))
434 ret = bdev->driver->ttm_tt_populate(bdev, ttm, ctx);
436 ret = ttm_pool_populate(ttm, ctx);
438 ttm_tt_add_mapping(bdev, ttm);
443 static void ttm_tt_clear_mapping(struct ttm_tt *ttm)
446 struct page **page = ttm->pages;
448 if (ttm->page_flags & TTM_PAGE_FLAG_SG)
451 for (i = 0; i < ttm->num_pages; ++i) {
458 struct ttm_tt *ttm)
460 if (!ttm_tt_is_populated(ttm))
463 ttm_tt_clear_mapping(ttm);
465 bdev->driver->ttm_tt_unpopulate(bdev, ttm);
467 ttm_pool_unpopulate(ttm);