diff options
Diffstat (limited to 'include/drm/ttm/ttm_bo_driver.h')
| -rw-r--r-- | include/drm/ttm/ttm_bo_driver.h | 250 |
1 files changed, 18 insertions, 232 deletions
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index 94064b126e8e..3234cc322e70 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -42,113 +42,10 @@ #include "ttm_memory.h" #include "ttm_module.h" #include "ttm_placement.h" +#include "ttm_tt.h" #define TTM_MAX_BO_PRIORITY 4U -struct ttm_backend_func { - /** - * struct ttm_backend_func member bind - * - * @ttm: Pointer to a struct ttm_tt. - * @bo_mem: Pointer to a struct ttm_mem_reg describing the - * memory type and location for binding. - * - * Bind the backend pages into the aperture in the location - * indicated by @bo_mem. This function should be able to handle - * differences between aperture and system page sizes. - */ - int (*bind) (struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem); - - /** - * struct ttm_backend_func member unbind - * - * @ttm: Pointer to a struct ttm_tt. - * - * Unbind previously bound backend pages. This function should be - * able to handle differences between aperture and system page sizes. - */ - int (*unbind) (struct ttm_tt *ttm); - - /** - * struct ttm_backend_func member destroy - * - * @ttm: Pointer to a struct ttm_tt. - * - * Destroy the backend. This will be call back from ttm_tt_destroy so - * don't call ttm_tt_destroy from the callback or infinite loop. - */ - void (*destroy) (struct ttm_tt *ttm); -}; - -#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) - -enum ttm_caching_state { - tt_uncached, - tt_wc, - tt_cached -}; - -/** - * struct ttm_tt - * - * @bdev: Pointer to a struct ttm_bo_device. - * @func: Pointer to a struct ttm_backend_func that describes - * the backend methods. - * @dummy_read_page: Page to map where the ttm_tt page array contains a NULL - * pointer. - * @pages: Array of pages backing the data. - * @num_pages: Number of pages in the page array. - * @bdev: Pointer to the current struct ttm_bo_device. - * @be: Pointer to the ttm backend. - * @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. - * - * 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_tt { - struct ttm_bo_device *bdev; - struct ttm_backend_func *func; - struct page *dummy_read_page; - struct page **pages; - uint32_t page_flags; - unsigned long num_pages; - struct sg_table *sg; /* for SG objects via dma-buf */ - struct ttm_bo_global *glob; - struct file *swap_storage; - enum ttm_caching_state caching_state; - enum { - tt_bound, - tt_unbound, - tt_unpopulated, - } state; -}; - -/** - * 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; -}; - #define TTM_MEMTYPE_FLAG_FIXED (1 << 0) /* Fixed (on-card) PCI memory */ #define TTM_MEMTYPE_FLAG_MAPPABLE (1 << 1) /* Memory mappable */ #define TTM_MEMTYPE_FLAG_CMA (1 << 3) /* Can't map aperture */ @@ -328,20 +225,16 @@ struct ttm_bo_driver { /** * ttm_tt_create * - * @bdev: pointer to a struct ttm_bo_device: - * @size: Size of the data needed backing. + * @bo: The buffer object to create the ttm for. * @page_flags: Page flags as identified by TTM_PAGE_FLAG_XX flags. - * @dummy_read_page: See struct ttm_bo_device. * * Create a struct ttm_tt to back data with system memory pages. * No pages are actually allocated. * Returns: * NULL: Out of memory. */ - struct ttm_tt *(*ttm_tt_create)(struct ttm_bo_device *bdev, - unsigned long size, - uint32_t page_flags, - struct page *dummy_read_page); + struct ttm_tt *(*ttm_tt_create)(struct ttm_buffer_object *bo, + uint32_t page_flags); /** * ttm_tt_populate @@ -556,6 +449,7 @@ struct ttm_bo_global { * @dev_mapping: A pointer to the struct address_space representing the * device address space. * @wq: Work queue structure for the delayed delete workqueue. + * @no_retry: Don't retry allocation if it fails * */ @@ -592,6 +486,8 @@ struct ttm_bo_device { struct delayed_work wq; bool need_dma32; + + bool no_retry; }; /** @@ -611,100 +507,6 @@ ttm_flag_masked(uint32_t *old, uint32_t new, uint32_t mask) return *old; } -/** - * ttm_tt_init - * - * @ttm: The struct ttm_tt. - * @bdev: pointer to a struct ttm_bo_device: - * @size: Size of the data needed backing. - * @page_flags: Page flags as identified by TTM_PAGE_FLAG_XX flags. - * @dummy_read_page: See struct ttm_bo_device. - * - * Create a struct ttm_tt to back data with system memory pages. - * No pages are actually allocated. - * Returns: - * NULL: Out of memory. - */ -int ttm_tt_init(struct ttm_tt *ttm, struct ttm_bo_device *bdev, - unsigned long size, uint32_t page_flags, - struct page *dummy_read_page); -int ttm_dma_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_bo_device *bdev, - unsigned long size, uint32_t page_flags, - struct page *dummy_read_page); - -/** - * ttm_tt_fini - * - * @ttm: the ttm_tt structure. - * - * 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_bind: - * - * @ttm: The struct ttm_tt containing backing pages. - * @bo_mem: The struct ttm_mem_reg identifying the binding location. - * - * Bind the pages of @ttm to an aperture location identified by @bo_mem - */ -int ttm_tt_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem, - struct ttm_operation_ctx *ctx); - -/** - * ttm_ttm_destroy: - * - * @ttm: The struct ttm_tt. - * - * Unbind, unpopulate and destroy common struct ttm_tt. - */ -void ttm_tt_destroy(struct ttm_tt *ttm); - -/** - * ttm_ttm_unbind: - * - * @ttm: The struct ttm_tt. - * - * Unbind a struct ttm_tt. - */ -void ttm_tt_unbind(struct ttm_tt *ttm); - -/** - * ttm_tt_swapin: - * - * @ttm: The struct ttm_tt. - * - * 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_tt *ttm, struct file *persistent_swap_storage); - -/** - * ttm_tt_unpopulate - free pages from a ttm - * - * @ttm: Pointer to the ttm_tt structure - * - * Calls the driver method to free all pages from a ttm - */ -void ttm_tt_unpopulate(struct ttm_tt *ttm); - /* * ttm_bo.c */ @@ -943,9 +745,9 @@ static inline int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo, static inline void ttm_bo_unreserve(struct ttm_buffer_object *bo) { if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { - spin_lock(&bo->glob->lru_lock); + spin_lock(&bo->bdev->glob->lru_lock); ttm_bo_add_to_lru(bo); - spin_unlock(&bo->glob->lru_lock); + spin_unlock(&bo->bdev->glob->lru_lock); } reservation_object_unlock(bo->resv); } @@ -1046,6 +848,15 @@ int ttm_bo_pipeline_move(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem); /** + * ttm_bo_pipeline_gutting. + * + * @bo: A pointer to a struct ttm_buffer_object. + * + * Pipelined gutting a BO of it's backing store. + */ +int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo); + +/** * ttm_io_prot * * @c_state: Caching state. @@ -1058,29 +869,4 @@ pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp); extern const struct ttm_mem_type_manager_func ttm_bo_manager_func; -#if IS_ENABLED(CONFIG_AGP) -#include <linux/agp_backend.h> - -/** - * ttm_agp_tt_create - * - * @bdev: Pointer to a struct ttm_bo_device. - * @bridge: The agp bridge this device is sitting on. - * @size: Size of the data needed backing. - * @page_flags: Page flags as identified by TTM_PAGE_FLAG_XX flags. - * @dummy_read_page: See struct ttm_bo_device. - * - * - * Create a TTM backend that uses the indicated AGP bridge as an aperture - * for TT memory. This function uses the linux agpgart interface to - * bind and unbind memory backing a ttm_tt. - */ -struct ttm_tt *ttm_agp_tt_create(struct ttm_bo_device *bdev, - struct agp_bridge_data *bridge, - unsigned long size, uint32_t page_flags, - struct page *dummy_read_page); -int ttm_agp_tt_populate(struct ttm_tt *ttm, struct ttm_operation_ctx *ctx); -void ttm_agp_tt_unpopulate(struct ttm_tt *ttm); -#endif - #endif |