198932149SChris Wilson /* 298932149SChris Wilson * SPDX-License-Identifier: MIT 398932149SChris Wilson * 498932149SChris Wilson * Copyright © 2016 Intel Corporation 598932149SChris Wilson */ 698932149SChris Wilson 798932149SChris Wilson #ifndef __I915_GEM_OBJECT_H__ 898932149SChris Wilson #define __I915_GEM_OBJECT_H__ 998932149SChris Wilson 1098932149SChris Wilson #include <drm/drm_gem.h> 1198932149SChris Wilson #include <drm/drm_file.h> 1298932149SChris Wilson #include <drm/drm_device.h> 1398932149SChris Wilson 1498932149SChris Wilson #include <drm/i915_drm.h> 1598932149SChris Wilson 1698932149SChris Wilson #include "i915_gem_object_types.h" 1798932149SChris Wilson 18f0e4a063SChris Wilson #include "i915_gem_gtt.h" 19f0e4a063SChris Wilson 208475355fSChris Wilson void i915_gem_init__objects(struct drm_i915_private *i915); 218475355fSChris Wilson 2298932149SChris Wilson struct drm_i915_gem_object *i915_gem_object_alloc(void); 2398932149SChris Wilson void i915_gem_object_free(struct drm_i915_gem_object *obj); 2498932149SChris Wilson 258475355fSChris Wilson void i915_gem_object_init(struct drm_i915_gem_object *obj, 268475355fSChris Wilson const struct drm_i915_gem_object_ops *ops); 278475355fSChris Wilson struct drm_i915_gem_object * 288475355fSChris Wilson i915_gem_object_create_shmem(struct drm_i915_private *i915, u64 size); 298475355fSChris Wilson struct drm_i915_gem_object * 308475355fSChris Wilson i915_gem_object_create_shmem_from_data(struct drm_i915_private *i915, 318475355fSChris Wilson const void *data, size_t size); 328475355fSChris Wilson 338475355fSChris Wilson extern const struct drm_i915_gem_object_ops i915_gem_shmem_ops; 348475355fSChris Wilson void __i915_gem_object_release_shmem(struct drm_i915_gem_object *obj, 358475355fSChris Wilson struct sg_table *pages, 368475355fSChris Wilson bool needs_clflush); 378475355fSChris Wilson 38f033428dSChris Wilson int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, int align); 39f033428dSChris Wilson 408475355fSChris Wilson void i915_gem_close_object(struct drm_gem_object *gem, struct drm_file *file); 418475355fSChris Wilson void i915_gem_free_object(struct drm_gem_object *obj); 428475355fSChris Wilson 438475355fSChris Wilson void i915_gem_flush_free_objects(struct drm_i915_private *i915); 448475355fSChris Wilson 45f033428dSChris Wilson struct sg_table * 46f033428dSChris Wilson __i915_gem_object_unset_pages(struct drm_i915_gem_object *obj); 47f033428dSChris Wilson void i915_gem_object_truncate(struct drm_i915_gem_object *obj); 48f033428dSChris Wilson 4998932149SChris Wilson /** 5098932149SChris Wilson * i915_gem_object_lookup_rcu - look up a temporary GEM object from its handle 5198932149SChris Wilson * @filp: DRM file private date 5298932149SChris Wilson * @handle: userspace handle 5398932149SChris Wilson * 5498932149SChris Wilson * Returns: 5598932149SChris Wilson * 5698932149SChris Wilson * A pointer to the object named by the handle if such exists on @filp, NULL 5798932149SChris Wilson * otherwise. This object is only valid whilst under the RCU read lock, and 5898932149SChris Wilson * note carefully the object may be in the process of being destroyed. 5998932149SChris Wilson */ 6098932149SChris Wilson static inline struct drm_i915_gem_object * 6198932149SChris Wilson i915_gem_object_lookup_rcu(struct drm_file *file, u32 handle) 6298932149SChris Wilson { 6398932149SChris Wilson #ifdef CONFIG_LOCKDEP 6498932149SChris Wilson WARN_ON(debug_locks && !lock_is_held(&rcu_lock_map)); 6598932149SChris Wilson #endif 6698932149SChris Wilson return idr_find(&file->object_idr, handle); 6798932149SChris Wilson } 6898932149SChris Wilson 6998932149SChris Wilson static inline struct drm_i915_gem_object * 7098932149SChris Wilson i915_gem_object_lookup(struct drm_file *file, u32 handle) 7198932149SChris Wilson { 7298932149SChris Wilson struct drm_i915_gem_object *obj; 7398932149SChris Wilson 7498932149SChris Wilson rcu_read_lock(); 7598932149SChris Wilson obj = i915_gem_object_lookup_rcu(file, handle); 7698932149SChris Wilson if (obj && !kref_get_unless_zero(&obj->base.refcount)) 7798932149SChris Wilson obj = NULL; 7898932149SChris Wilson rcu_read_unlock(); 7998932149SChris Wilson 8098932149SChris Wilson return obj; 8198932149SChris Wilson } 8298932149SChris Wilson 8398932149SChris Wilson __deprecated 8498932149SChris Wilson extern struct drm_gem_object * 8598932149SChris Wilson drm_gem_object_lookup(struct drm_file *file, u32 handle); 8698932149SChris Wilson 8798932149SChris Wilson __attribute__((nonnull)) 8898932149SChris Wilson static inline struct drm_i915_gem_object * 8998932149SChris Wilson i915_gem_object_get(struct drm_i915_gem_object *obj) 9098932149SChris Wilson { 9198932149SChris Wilson drm_gem_object_get(&obj->base); 9298932149SChris Wilson return obj; 9398932149SChris Wilson } 9498932149SChris Wilson 9598932149SChris Wilson __attribute__((nonnull)) 9698932149SChris Wilson static inline void 9798932149SChris Wilson i915_gem_object_put(struct drm_i915_gem_object *obj) 9898932149SChris Wilson { 9998932149SChris Wilson __drm_gem_object_put(&obj->base); 10098932149SChris Wilson } 10198932149SChris Wilson 1026951e589SChris Wilson #define assert_object_held(obj) reservation_object_assert_held((obj)->resv) 1036951e589SChris Wilson 10498932149SChris Wilson static inline void i915_gem_object_lock(struct drm_i915_gem_object *obj) 10598932149SChris Wilson { 10698932149SChris Wilson reservation_object_lock(obj->resv, NULL); 10798932149SChris Wilson } 10898932149SChris Wilson 1096951e589SChris Wilson static inline int 1106951e589SChris Wilson i915_gem_object_lock_interruptible(struct drm_i915_gem_object *obj) 1116951e589SChris Wilson { 1126951e589SChris Wilson return reservation_object_lock_interruptible(obj->resv, NULL); 1136951e589SChris Wilson } 1146951e589SChris Wilson 11598932149SChris Wilson static inline void i915_gem_object_unlock(struct drm_i915_gem_object *obj) 11698932149SChris Wilson { 11798932149SChris Wilson reservation_object_unlock(obj->resv); 11898932149SChris Wilson } 11998932149SChris Wilson 1206951e589SChris Wilson struct dma_fence * 1216951e589SChris Wilson i915_gem_object_lock_fence(struct drm_i915_gem_object *obj); 1226951e589SChris Wilson void i915_gem_object_unlock_fence(struct drm_i915_gem_object *obj, 1236951e589SChris Wilson struct dma_fence *fence); 1246951e589SChris Wilson 12598932149SChris Wilson static inline void 12698932149SChris Wilson i915_gem_object_set_readonly(struct drm_i915_gem_object *obj) 12798932149SChris Wilson { 12898932149SChris Wilson obj->base.vma_node.readonly = true; 12998932149SChris Wilson } 13098932149SChris Wilson 13198932149SChris Wilson static inline bool 13298932149SChris Wilson i915_gem_object_is_readonly(const struct drm_i915_gem_object *obj) 13398932149SChris Wilson { 13498932149SChris Wilson return obj->base.vma_node.readonly; 13598932149SChris Wilson } 13698932149SChris Wilson 13798932149SChris Wilson static inline bool 13898932149SChris Wilson i915_gem_object_has_struct_page(const struct drm_i915_gem_object *obj) 13998932149SChris Wilson { 14098932149SChris Wilson return obj->ops->flags & I915_GEM_OBJECT_HAS_STRUCT_PAGE; 14198932149SChris Wilson } 14298932149SChris Wilson 14398932149SChris Wilson static inline bool 14498932149SChris Wilson i915_gem_object_is_shrinkable(const struct drm_i915_gem_object *obj) 14598932149SChris Wilson { 14698932149SChris Wilson return obj->ops->flags & I915_GEM_OBJECT_IS_SHRINKABLE; 14798932149SChris Wilson } 14898932149SChris Wilson 14998932149SChris Wilson static inline bool 15098932149SChris Wilson i915_gem_object_is_proxy(const struct drm_i915_gem_object *obj) 15198932149SChris Wilson { 15298932149SChris Wilson return obj->ops->flags & I915_GEM_OBJECT_IS_PROXY; 15398932149SChris Wilson } 15498932149SChris Wilson 15598932149SChris Wilson static inline bool 15698932149SChris Wilson i915_gem_object_needs_async_cancel(const struct drm_i915_gem_object *obj) 15798932149SChris Wilson { 15898932149SChris Wilson return obj->ops->flags & I915_GEM_OBJECT_ASYNC_CANCEL; 15998932149SChris Wilson } 16098932149SChris Wilson 16198932149SChris Wilson static inline bool 16298932149SChris Wilson i915_gem_object_is_active(const struct drm_i915_gem_object *obj) 16398932149SChris Wilson { 164c017cf6bSChris Wilson return READ_ONCE(obj->active_count); 16598932149SChris Wilson } 16698932149SChris Wilson 16798932149SChris Wilson static inline bool 16898932149SChris Wilson i915_gem_object_is_framebuffer(const struct drm_i915_gem_object *obj) 16998932149SChris Wilson { 17098932149SChris Wilson return READ_ONCE(obj->framebuffer_references); 17198932149SChris Wilson } 17298932149SChris Wilson 17398932149SChris Wilson static inline unsigned int 17498932149SChris Wilson i915_gem_object_get_tiling(const struct drm_i915_gem_object *obj) 17598932149SChris Wilson { 17698932149SChris Wilson return obj->tiling_and_stride & TILING_MASK; 17798932149SChris Wilson } 17898932149SChris Wilson 17998932149SChris Wilson static inline bool 18098932149SChris Wilson i915_gem_object_is_tiled(const struct drm_i915_gem_object *obj) 18198932149SChris Wilson { 18298932149SChris Wilson return i915_gem_object_get_tiling(obj) != I915_TILING_NONE; 18398932149SChris Wilson } 18498932149SChris Wilson 18598932149SChris Wilson static inline unsigned int 18698932149SChris Wilson i915_gem_object_get_stride(const struct drm_i915_gem_object *obj) 18798932149SChris Wilson { 18898932149SChris Wilson return obj->tiling_and_stride & STRIDE_MASK; 18998932149SChris Wilson } 19098932149SChris Wilson 19198932149SChris Wilson static inline unsigned int 19298932149SChris Wilson i915_gem_tile_height(unsigned int tiling) 19398932149SChris Wilson { 19498932149SChris Wilson GEM_BUG_ON(!tiling); 19598932149SChris Wilson return tiling == I915_TILING_Y ? 32 : 8; 19698932149SChris Wilson } 19798932149SChris Wilson 19898932149SChris Wilson static inline unsigned int 19998932149SChris Wilson i915_gem_object_get_tile_height(const struct drm_i915_gem_object *obj) 20098932149SChris Wilson { 20198932149SChris Wilson return i915_gem_tile_height(i915_gem_object_get_tiling(obj)); 20298932149SChris Wilson } 20398932149SChris Wilson 20498932149SChris Wilson static inline unsigned int 20598932149SChris Wilson i915_gem_object_get_tile_row_size(const struct drm_i915_gem_object *obj) 20698932149SChris Wilson { 20798932149SChris Wilson return (i915_gem_object_get_stride(obj) * 20898932149SChris Wilson i915_gem_object_get_tile_height(obj)); 20998932149SChris Wilson } 21098932149SChris Wilson 21198932149SChris Wilson int i915_gem_object_set_tiling(struct drm_i915_gem_object *obj, 21298932149SChris Wilson unsigned int tiling, unsigned int stride); 21398932149SChris Wilson 21498932149SChris Wilson struct scatterlist * 21598932149SChris Wilson i915_gem_object_get_sg(struct drm_i915_gem_object *obj, 21698932149SChris Wilson unsigned int n, unsigned int *offset); 21798932149SChris Wilson 21898932149SChris Wilson struct page * 21998932149SChris Wilson i915_gem_object_get_page(struct drm_i915_gem_object *obj, 22098932149SChris Wilson unsigned int n); 22198932149SChris Wilson 22298932149SChris Wilson struct page * 22398932149SChris Wilson i915_gem_object_get_dirty_page(struct drm_i915_gem_object *obj, 22498932149SChris Wilson unsigned int n); 22598932149SChris Wilson 22698932149SChris Wilson dma_addr_t 22798932149SChris Wilson i915_gem_object_get_dma_address_len(struct drm_i915_gem_object *obj, 22898932149SChris Wilson unsigned long n, 22998932149SChris Wilson unsigned int *len); 23098932149SChris Wilson 23198932149SChris Wilson dma_addr_t 23298932149SChris Wilson i915_gem_object_get_dma_address(struct drm_i915_gem_object *obj, 23398932149SChris Wilson unsigned long n); 23498932149SChris Wilson 23598932149SChris Wilson void __i915_gem_object_set_pages(struct drm_i915_gem_object *obj, 23698932149SChris Wilson struct sg_table *pages, 23798932149SChris Wilson unsigned int sg_page_sizes); 238f033428dSChris Wilson 239f033428dSChris Wilson int ____i915_gem_object_get_pages(struct drm_i915_gem_object *obj); 24098932149SChris Wilson int __i915_gem_object_get_pages(struct drm_i915_gem_object *obj); 24198932149SChris Wilson 24298932149SChris Wilson static inline int __must_check 24398932149SChris Wilson i915_gem_object_pin_pages(struct drm_i915_gem_object *obj) 24498932149SChris Wilson { 24598932149SChris Wilson might_lock(&obj->mm.lock); 24698932149SChris Wilson 24798932149SChris Wilson if (atomic_inc_not_zero(&obj->mm.pages_pin_count)) 24898932149SChris Wilson return 0; 24998932149SChris Wilson 25098932149SChris Wilson return __i915_gem_object_get_pages(obj); 25198932149SChris Wilson } 25298932149SChris Wilson 25398932149SChris Wilson static inline bool 25498932149SChris Wilson i915_gem_object_has_pages(struct drm_i915_gem_object *obj) 25598932149SChris Wilson { 25698932149SChris Wilson return !IS_ERR_OR_NULL(READ_ONCE(obj->mm.pages)); 25798932149SChris Wilson } 25898932149SChris Wilson 25998932149SChris Wilson static inline void 26098932149SChris Wilson __i915_gem_object_pin_pages(struct drm_i915_gem_object *obj) 26198932149SChris Wilson { 26298932149SChris Wilson GEM_BUG_ON(!i915_gem_object_has_pages(obj)); 26398932149SChris Wilson 26498932149SChris Wilson atomic_inc(&obj->mm.pages_pin_count); 26598932149SChris Wilson } 26698932149SChris Wilson 26798932149SChris Wilson static inline bool 26898932149SChris Wilson i915_gem_object_has_pinned_pages(struct drm_i915_gem_object *obj) 26998932149SChris Wilson { 27098932149SChris Wilson return atomic_read(&obj->mm.pages_pin_count); 27198932149SChris Wilson } 27298932149SChris Wilson 27398932149SChris Wilson static inline void 27498932149SChris Wilson __i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj) 27598932149SChris Wilson { 27698932149SChris Wilson GEM_BUG_ON(!i915_gem_object_has_pages(obj)); 27798932149SChris Wilson GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj)); 27898932149SChris Wilson 27998932149SChris Wilson atomic_dec(&obj->mm.pages_pin_count); 28098932149SChris Wilson } 28198932149SChris Wilson 28298932149SChris Wilson static inline void 28398932149SChris Wilson i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj) 28498932149SChris Wilson { 28598932149SChris Wilson __i915_gem_object_unpin_pages(obj); 28698932149SChris Wilson } 28798932149SChris Wilson 28898932149SChris Wilson enum i915_mm_subclass { /* lockdep subclass for obj->mm.lock/struct_mutex */ 28998932149SChris Wilson I915_MM_NORMAL = 0, 29098932149SChris Wilson I915_MM_SHRINKER /* called "recursively" from direct-reclaim-esque */ 29198932149SChris Wilson }; 29298932149SChris Wilson 29398932149SChris Wilson int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj, 29498932149SChris Wilson enum i915_mm_subclass subclass); 295f033428dSChris Wilson void i915_gem_object_truncate(struct drm_i915_gem_object *obj); 296f033428dSChris Wilson void i915_gem_object_writeback(struct drm_i915_gem_object *obj); 29798932149SChris Wilson 29898932149SChris Wilson enum i915_map_type { 29998932149SChris Wilson I915_MAP_WB = 0, 30098932149SChris Wilson I915_MAP_WC, 30198932149SChris Wilson #define I915_MAP_OVERRIDE BIT(31) 30298932149SChris Wilson I915_MAP_FORCE_WB = I915_MAP_WB | I915_MAP_OVERRIDE, 30398932149SChris Wilson I915_MAP_FORCE_WC = I915_MAP_WC | I915_MAP_OVERRIDE, 30498932149SChris Wilson }; 30598932149SChris Wilson 30698932149SChris Wilson /** 30798932149SChris Wilson * i915_gem_object_pin_map - return a contiguous mapping of the entire object 30898932149SChris Wilson * @obj: the object to map into kernel address space 30998932149SChris Wilson * @type: the type of mapping, used to select pgprot_t 31098932149SChris Wilson * 31198932149SChris Wilson * Calls i915_gem_object_pin_pages() to prevent reaping of the object's 31298932149SChris Wilson * pages and then returns a contiguous mapping of the backing storage into 31398932149SChris Wilson * the kernel address space. Based on the @type of mapping, the PTE will be 31498932149SChris Wilson * set to either WriteBack or WriteCombine (via pgprot_t). 31598932149SChris Wilson * 31698932149SChris Wilson * The caller is responsible for calling i915_gem_object_unpin_map() when the 31798932149SChris Wilson * mapping is no longer required. 31898932149SChris Wilson * 31998932149SChris Wilson * Returns the pointer through which to access the mapped object, or an 32098932149SChris Wilson * ERR_PTR() on error. 32198932149SChris Wilson */ 32298932149SChris Wilson void *__must_check i915_gem_object_pin_map(struct drm_i915_gem_object *obj, 32398932149SChris Wilson enum i915_map_type type); 32498932149SChris Wilson 32598932149SChris Wilson void __i915_gem_object_flush_map(struct drm_i915_gem_object *obj, 32698932149SChris Wilson unsigned long offset, 32798932149SChris Wilson unsigned long size); 32898932149SChris Wilson static inline void i915_gem_object_flush_map(struct drm_i915_gem_object *obj) 32998932149SChris Wilson { 33098932149SChris Wilson __i915_gem_object_flush_map(obj, 0, obj->base.size); 33198932149SChris Wilson } 33298932149SChris Wilson 33398932149SChris Wilson /** 33498932149SChris Wilson * i915_gem_object_unpin_map - releases an earlier mapping 33598932149SChris Wilson * @obj: the object to unmap 33698932149SChris Wilson * 33798932149SChris Wilson * After pinning the object and mapping its pages, once you are finished 33898932149SChris Wilson * with your access, call i915_gem_object_unpin_map() to release the pin 33998932149SChris Wilson * upon the mapping. Once the pin count reaches zero, that mapping may be 34098932149SChris Wilson * removed. 34198932149SChris Wilson */ 34298932149SChris Wilson static inline void i915_gem_object_unpin_map(struct drm_i915_gem_object *obj) 34398932149SChris Wilson { 34498932149SChris Wilson i915_gem_object_unpin_pages(obj); 34598932149SChris Wilson } 34698932149SChris Wilson 347b414fcd5SChris Wilson void __i915_gem_object_release_mmap(struct drm_i915_gem_object *obj); 348b414fcd5SChris Wilson void i915_gem_object_release_mmap(struct drm_i915_gem_object *obj); 349b414fcd5SChris Wilson 350b414fcd5SChris Wilson void 351b414fcd5SChris Wilson i915_gem_object_flush_write_domain(struct drm_i915_gem_object *obj, 352b414fcd5SChris Wilson unsigned int flush_domains); 353b414fcd5SChris Wilson 354f0e4a063SChris Wilson int i915_gem_object_prepare_read(struct drm_i915_gem_object *obj, 355f0e4a063SChris Wilson unsigned int *needs_clflush); 356f0e4a063SChris Wilson int i915_gem_object_prepare_write(struct drm_i915_gem_object *obj, 357f0e4a063SChris Wilson unsigned int *needs_clflush); 358f0e4a063SChris Wilson #define CLFLUSH_BEFORE BIT(0) 359f0e4a063SChris Wilson #define CLFLUSH_AFTER BIT(1) 360f0e4a063SChris Wilson #define CLFLUSH_FLAGS (CLFLUSH_BEFORE | CLFLUSH_AFTER) 361f0e4a063SChris Wilson 362f0e4a063SChris Wilson static inline void 363f0e4a063SChris Wilson i915_gem_object_finish_access(struct drm_i915_gem_object *obj) 364f0e4a063SChris Wilson { 365f0e4a063SChris Wilson i915_gem_object_unpin_pages(obj); 3666951e589SChris Wilson i915_gem_object_unlock(obj); 367f0e4a063SChris Wilson } 368f0e4a063SChris Wilson 36998932149SChris Wilson static inline struct intel_engine_cs * 37098932149SChris Wilson i915_gem_object_last_write_engine(struct drm_i915_gem_object *obj) 37198932149SChris Wilson { 37298932149SChris Wilson struct intel_engine_cs *engine = NULL; 37398932149SChris Wilson struct dma_fence *fence; 37498932149SChris Wilson 37598932149SChris Wilson rcu_read_lock(); 37698932149SChris Wilson fence = reservation_object_get_excl_rcu(obj->resv); 37798932149SChris Wilson rcu_read_unlock(); 37898932149SChris Wilson 37998932149SChris Wilson if (fence && dma_fence_is_i915(fence) && !dma_fence_is_signaled(fence)) 38098932149SChris Wilson engine = to_request(fence)->engine; 38198932149SChris Wilson dma_fence_put(fence); 38298932149SChris Wilson 38398932149SChris Wilson return engine; 38498932149SChris Wilson } 38598932149SChris Wilson 38698932149SChris Wilson void i915_gem_object_set_cache_coherency(struct drm_i915_gem_object *obj, 38798932149SChris Wilson unsigned int cache_level); 38898932149SChris Wilson void i915_gem_object_flush_if_display(struct drm_i915_gem_object *obj); 38998932149SChris Wilson 390f0e4a063SChris Wilson int __must_check 391f0e4a063SChris Wilson i915_gem_object_set_to_wc_domain(struct drm_i915_gem_object *obj, bool write); 392f0e4a063SChris Wilson int __must_check 393f0e4a063SChris Wilson i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write); 394f0e4a063SChris Wilson int __must_check 395f0e4a063SChris Wilson i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write); 396f0e4a063SChris Wilson struct i915_vma * __must_check 397f0e4a063SChris Wilson i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj, 398f0e4a063SChris Wilson u32 alignment, 399f0e4a063SChris Wilson const struct i915_ggtt_view *view, 400f0e4a063SChris Wilson unsigned int flags); 401f0e4a063SChris Wilson void i915_gem_object_unpin_from_display_plane(struct i915_vma *vma); 402f0e4a063SChris Wilson 4038475355fSChris Wilson static inline bool cpu_write_needs_clflush(struct drm_i915_gem_object *obj) 4048475355fSChris Wilson { 4058475355fSChris Wilson if (obj->cache_dirty) 4068475355fSChris Wilson return false; 4078475355fSChris Wilson 4088475355fSChris Wilson if (!(obj->cache_coherent & I915_BO_CACHE_COHERENT_FOR_WRITE)) 4098475355fSChris Wilson return true; 4108475355fSChris Wilson 4118475355fSChris Wilson return obj->pin_global; /* currently in use by HW, keep flushed */ 4128475355fSChris Wilson } 4138475355fSChris Wilson 4148475355fSChris Wilson static inline void __start_cpu_write(struct drm_i915_gem_object *obj) 4158475355fSChris Wilson { 4168475355fSChris Wilson obj->read_domains = I915_GEM_DOMAIN_CPU; 4178475355fSChris Wilson obj->write_domain = I915_GEM_DOMAIN_CPU; 4188475355fSChris Wilson if (cpu_write_needs_clflush(obj)) 4198475355fSChris Wilson obj->cache_dirty = true; 4208475355fSChris Wilson } 42198932149SChris Wilson 422d45a1a53SChris Wilson int i915_gem_object_wait(struct drm_i915_gem_object *obj, 423d45a1a53SChris Wilson unsigned int flags, 424d45a1a53SChris Wilson long timeout); 425d45a1a53SChris Wilson int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj, 426d45a1a53SChris Wilson unsigned int flags, 427d45a1a53SChris Wilson const struct i915_sched_attr *attr); 428d45a1a53SChris Wilson #define I915_PRIORITY_DISPLAY I915_USER_PRIORITY(I915_PRIORITY_MAX) 429d45a1a53SChris Wilson 43098932149SChris Wilson #endif 431