diff options
Diffstat (limited to 'include/drm/ttm/ttm_tt.h')
| -rw-r--r-- | include/drm/ttm/ttm_tt.h | 82 |
1 files changed, 17 insertions, 65 deletions
diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h index 75208c0a0cac..da27e9d8fa64 100644 --- a/include/drm/ttm/ttm_tt.h +++ b/include/drm/ttm/ttm_tt.h @@ -28,38 +28,31 @@ #define _TTM_TT_H_ #include <linux/types.h> +#include <drm/ttm/ttm_caching.h> struct ttm_tt; struct ttm_resource; struct ttm_buffer_object; struct ttm_operation_ctx; -#define TTM_PAGE_FLAG_WRITE (1 << 3) #define TTM_PAGE_FLAG_SWAPPED (1 << 4) -#define TTM_PAGE_FLAG_PERSISTENT_SWAP (1 << 5) #define TTM_PAGE_FLAG_ZERO_ALLOC (1 << 6) -#define TTM_PAGE_FLAG_DMA32 (1 << 7) #define TTM_PAGE_FLAG_SG (1 << 8) #define TTM_PAGE_FLAG_NO_RETRY (1 << 9) #define TTM_PAGE_FLAG_PRIV_POPULATED (1 << 31) -enum ttm_caching_state { - tt_uncached, - tt_wc, - tt_cached -}; - /** * struct ttm_tt * * @pages: Array of pages backing the data. + * @page_flags: see TTM_PAGE_FLAG_* * @num_pages: Number of pages in the page array. - * @bdev: Pointer to the current struct ttm_bo_device. - * @be: Pointer to the ttm backend. + * @sg: for SG objects via dma-buf + * @dma_address: The DMA (bus) addresses of the pages * @swap_storage: Pointer to shmem struct file for swap storage. - * @caching_state: The current caching state of the pages. - * @state: The current binding state of the pages. + * @pages_list: used by some page allocation backend + * @caching: The current caching state of the pages. * * This is a structure holding the pages, caching- and aperture binding * status for a buffer object that isn't backed by fixed (VRAM / AGP) @@ -68,10 +61,11 @@ enum ttm_caching_state { struct ttm_tt { struct page **pages; uint32_t page_flags; - unsigned long num_pages; - struct sg_table *sg; /* for SG objects via dma-buf */ + uint32_t num_pages; + struct sg_table *sg; + dma_addr_t *dma_address; struct file *swap_storage; - enum ttm_caching_state caching_state; + enum ttm_caching caching; }; static inline bool ttm_tt_is_populated(struct ttm_tt *tt) @@ -79,33 +73,6 @@ static inline bool ttm_tt_is_populated(struct ttm_tt *tt) return tt->page_flags & TTM_PAGE_FLAG_PRIV_POPULATED; } -static inline void ttm_tt_set_unpopulated(struct ttm_tt *tt) -{ - tt->page_flags &= ~TTM_PAGE_FLAG_PRIV_POPULATED; -} - -static inline void ttm_tt_set_populated(struct ttm_tt *tt) -{ - tt->page_flags |= TTM_PAGE_FLAG_PRIV_POPULATED; -} - -/** - * struct ttm_dma_tt - * - * @ttm: Base ttm_tt struct. - * @dma_address: The DMA (bus) addresses of the pages - * @pages_list: used by some page allocation backend - * - * This is a structure holding the pages, caching- and aperture binding - * status for a buffer object that isn't backed by fixed (VRAM / AGP) - * memory. - */ -struct ttm_dma_tt { - struct ttm_tt ttm; - dma_addr_t *dma_address; - struct list_head pages_list; -}; - /** * ttm_tt_create * @@ -123,6 +90,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); * @ttm: The struct ttm_tt. * @bo: The buffer object we create the ttm for. * @page_flags: Page flags as identified by TTM_PAGE_FLAG_XX flags. + * @caching: the desired caching state of the pages * * Create a struct ttm_tt to back data with system memory pages. * No pages are actually allocated. @@ -130,11 +98,11 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); * NULL: Out of memory. */ int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, - uint32_t page_flags); -int ttm_dma_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_buffer_object *bo, - uint32_t page_flags); -int ttm_sg_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_buffer_object *bo, - uint32_t page_flags); + uint32_t page_flags, enum ttm_caching caching); +int ttm_dma_tt_init(struct ttm_tt *ttm_dma, struct ttm_buffer_object *bo, + uint32_t page_flags, enum ttm_caching caching); +int ttm_sg_tt_init(struct ttm_tt *ttm_dma, struct ttm_buffer_object *bo, + uint32_t page_flags, enum ttm_caching caching); /** * ttm_tt_fini @@ -144,7 +112,6 @@ int ttm_sg_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_buffer_object *bo, * Free memory of ttm_tt structure */ void ttm_tt_fini(struct ttm_tt *ttm); -void ttm_dma_tt_fini(struct ttm_dma_tt *ttm_dma); /** * ttm_ttm_destroy: @@ -170,22 +137,7 @@ void ttm_tt_destroy_common(struct ttm_bo_device *bdev, struct ttm_tt *ttm); * Swap in a previously swap out ttm_tt. */ int ttm_tt_swapin(struct ttm_tt *ttm); - -/** - * ttm_tt_set_placement_caching: - * - * @ttm A struct ttm_tt the backing pages of which will change caching policy. - * @placement: Flag indicating the desired caching policy. - * - * This function will change caching policy of any default kernel mappings of - * the pages backing @ttm. If changing from cached to uncached or - * write-combined, - * all CPU caches will first be flushed to make sure the data of the pages - * hit RAM. This function may be very costly as it involves global TLB - * and cache flushes and potential page splitting / combining. - */ -int ttm_tt_set_placement_caching(struct ttm_tt *ttm, uint32_t placement); -int ttm_tt_swapout(struct ttm_bo_device *bdev, struct ttm_tt *ttm, struct file *persistent_swap_storage); +int ttm_tt_swapout(struct ttm_bo_device *bdev, struct ttm_tt *ttm); /** * ttm_tt_populate - allocate pages for a ttm |