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, 267867d709SChris Wilson const struct drm_i915_gem_object_ops *ops, 277867d709SChris Wilson struct lock_class_key *key); 288475355fSChris Wilson struct drm_i915_gem_object * 29da1184cdSMatthew Auld i915_gem_object_create_shmem(struct drm_i915_private *i915, 30da1184cdSMatthew Auld resource_size_t size); 318475355fSChris Wilson struct drm_i915_gem_object * 328475355fSChris Wilson i915_gem_object_create_shmem_from_data(struct drm_i915_private *i915, 33da1184cdSMatthew Auld const void *data, resource_size_t size); 348475355fSChris Wilson 358475355fSChris Wilson extern const struct drm_i915_gem_object_ops i915_gem_shmem_ops; 368475355fSChris Wilson void __i915_gem_object_release_shmem(struct drm_i915_gem_object *obj, 378475355fSChris Wilson struct sg_table *pages, 388475355fSChris Wilson bool needs_clflush); 398475355fSChris Wilson 40f033428dSChris Wilson int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, int align); 41f033428dSChris Wilson 428475355fSChris Wilson void i915_gem_close_object(struct drm_gem_object *gem, struct drm_file *file); 438475355fSChris Wilson void i915_gem_free_object(struct drm_gem_object *obj); 448475355fSChris Wilson 458475355fSChris Wilson void i915_gem_flush_free_objects(struct drm_i915_private *i915); 468475355fSChris Wilson 47f033428dSChris Wilson struct sg_table * 48f033428dSChris Wilson __i915_gem_object_unset_pages(struct drm_i915_gem_object *obj); 49f033428dSChris Wilson void i915_gem_object_truncate(struct drm_i915_gem_object *obj); 50f033428dSChris Wilson 5198932149SChris Wilson /** 5298932149SChris Wilson * i915_gem_object_lookup_rcu - look up a temporary GEM object from its handle 5398932149SChris Wilson * @filp: DRM file private date 5498932149SChris Wilson * @handle: userspace handle 5598932149SChris Wilson * 5698932149SChris Wilson * Returns: 5798932149SChris Wilson * 5898932149SChris Wilson * A pointer to the object named by the handle if such exists on @filp, NULL 5998932149SChris Wilson * otherwise. This object is only valid whilst under the RCU read lock, and 6098932149SChris Wilson * note carefully the object may be in the process of being destroyed. 6198932149SChris Wilson */ 6298932149SChris Wilson static inline struct drm_i915_gem_object * 6398932149SChris Wilson i915_gem_object_lookup_rcu(struct drm_file *file, u32 handle) 6498932149SChris Wilson { 6598932149SChris Wilson #ifdef CONFIG_LOCKDEP 6698932149SChris Wilson WARN_ON(debug_locks && !lock_is_held(&rcu_lock_map)); 6798932149SChris Wilson #endif 6898932149SChris Wilson return idr_find(&file->object_idr, handle); 6998932149SChris Wilson } 7098932149SChris Wilson 7198932149SChris Wilson static inline struct drm_i915_gem_object * 7298932149SChris Wilson i915_gem_object_lookup(struct drm_file *file, u32 handle) 7398932149SChris Wilson { 7498932149SChris Wilson struct drm_i915_gem_object *obj; 7598932149SChris Wilson 7698932149SChris Wilson rcu_read_lock(); 7798932149SChris Wilson obj = i915_gem_object_lookup_rcu(file, handle); 7898932149SChris Wilson if (obj && !kref_get_unless_zero(&obj->base.refcount)) 7998932149SChris Wilson obj = NULL; 8098932149SChris Wilson rcu_read_unlock(); 8198932149SChris Wilson 8298932149SChris Wilson return obj; 8398932149SChris Wilson } 8498932149SChris Wilson 8598932149SChris Wilson __deprecated 86b5893ffcSJanusz Krzysztofik struct drm_gem_object * 8798932149SChris Wilson drm_gem_object_lookup(struct drm_file *file, u32 handle); 8898932149SChris Wilson 8998932149SChris Wilson __attribute__((nonnull)) 9098932149SChris Wilson static inline struct drm_i915_gem_object * 9198932149SChris Wilson i915_gem_object_get(struct drm_i915_gem_object *obj) 9298932149SChris Wilson { 9398932149SChris Wilson drm_gem_object_get(&obj->base); 9498932149SChris Wilson return obj; 9598932149SChris Wilson } 9698932149SChris Wilson 9798932149SChris Wilson __attribute__((nonnull)) 9898932149SChris Wilson static inline void 9998932149SChris Wilson i915_gem_object_put(struct drm_i915_gem_object *obj) 10098932149SChris Wilson { 10198932149SChris Wilson __drm_gem_object_put(&obj->base); 10298932149SChris Wilson } 10398932149SChris Wilson 10452791eeeSChristian König #define assert_object_held(obj) dma_resv_assert_held((obj)->base.resv) 1056951e589SChris Wilson 10698932149SChris Wilson static inline void i915_gem_object_lock(struct drm_i915_gem_object *obj) 10798932149SChris Wilson { 10852791eeeSChristian König dma_resv_lock(obj->base.resv, NULL); 10998932149SChris Wilson } 11098932149SChris Wilson 1112850748eSChris Wilson static inline bool i915_gem_object_trylock(struct drm_i915_gem_object *obj) 1122850748eSChris Wilson { 1132850748eSChris Wilson return dma_resv_trylock(obj->base.resv); 1142850748eSChris Wilson } 1152850748eSChris Wilson 1166951e589SChris Wilson static inline int 1176951e589SChris Wilson i915_gem_object_lock_interruptible(struct drm_i915_gem_object *obj) 1186951e589SChris Wilson { 11952791eeeSChristian König return dma_resv_lock_interruptible(obj->base.resv, NULL); 1206951e589SChris Wilson } 1216951e589SChris Wilson 12298932149SChris Wilson static inline void i915_gem_object_unlock(struct drm_i915_gem_object *obj) 12398932149SChris Wilson { 12452791eeeSChristian König dma_resv_unlock(obj->base.resv); 12598932149SChris Wilson } 12698932149SChris Wilson 1276951e589SChris Wilson struct dma_fence * 1286951e589SChris Wilson i915_gem_object_lock_fence(struct drm_i915_gem_object *obj); 1296951e589SChris Wilson void i915_gem_object_unlock_fence(struct drm_i915_gem_object *obj, 1306951e589SChris Wilson struct dma_fence *fence); 1316951e589SChris Wilson 13298932149SChris Wilson static inline void 13398932149SChris Wilson i915_gem_object_set_readonly(struct drm_i915_gem_object *obj) 13498932149SChris Wilson { 13598932149SChris Wilson obj->base.vma_node.readonly = true; 13698932149SChris Wilson } 13798932149SChris Wilson 13898932149SChris Wilson static inline bool 13998932149SChris Wilson i915_gem_object_is_readonly(const struct drm_i915_gem_object *obj) 14098932149SChris Wilson { 14198932149SChris Wilson return obj->base.vma_node.readonly; 14298932149SChris Wilson } 14398932149SChris Wilson 14498932149SChris Wilson static inline bool 1452f0b97caSMatthew Auld i915_gem_object_is_contiguous(const struct drm_i915_gem_object *obj) 1462f0b97caSMatthew Auld { 1472f0b97caSMatthew Auld return obj->flags & I915_BO_ALLOC_CONTIGUOUS; 1482f0b97caSMatthew Auld } 1492f0b97caSMatthew Auld 1502f0b97caSMatthew Auld static inline bool 1517c98501aSMatthew Auld i915_gem_object_is_volatile(const struct drm_i915_gem_object *obj) 1527c98501aSMatthew Auld { 1537c98501aSMatthew Auld return obj->flags & I915_BO_ALLOC_VOLATILE; 1547c98501aSMatthew Auld } 1557c98501aSMatthew Auld 1567c98501aSMatthew Auld static inline void 1577c98501aSMatthew Auld i915_gem_object_set_volatile(struct drm_i915_gem_object *obj) 1587c98501aSMatthew Auld { 1597c98501aSMatthew Auld obj->flags |= I915_BO_ALLOC_VOLATILE; 1607c98501aSMatthew Auld } 1617c98501aSMatthew Auld 1627c98501aSMatthew Auld static inline bool 1633cbad5d7SChris Wilson i915_gem_object_type_has(const struct drm_i915_gem_object *obj, 1643cbad5d7SChris Wilson unsigned long flags) 1653cbad5d7SChris Wilson { 1663cbad5d7SChris Wilson return obj->ops->flags & flags; 1673cbad5d7SChris Wilson } 1683cbad5d7SChris Wilson 1693cbad5d7SChris Wilson static inline bool 17098932149SChris Wilson i915_gem_object_has_struct_page(const struct drm_i915_gem_object *obj) 17198932149SChris Wilson { 1723cbad5d7SChris Wilson return i915_gem_object_type_has(obj, I915_GEM_OBJECT_HAS_STRUCT_PAGE); 17398932149SChris Wilson } 17498932149SChris Wilson 17598932149SChris Wilson static inline bool 17698932149SChris Wilson i915_gem_object_is_shrinkable(const struct drm_i915_gem_object *obj) 17798932149SChris Wilson { 1783cbad5d7SChris Wilson return i915_gem_object_type_has(obj, I915_GEM_OBJECT_IS_SHRINKABLE); 17998932149SChris Wilson } 18098932149SChris Wilson 18198932149SChris Wilson static inline bool 18298932149SChris Wilson i915_gem_object_is_proxy(const struct drm_i915_gem_object *obj) 18398932149SChris Wilson { 1843cbad5d7SChris Wilson return i915_gem_object_type_has(obj, I915_GEM_OBJECT_IS_PROXY); 18598932149SChris Wilson } 18698932149SChris Wilson 18798932149SChris Wilson static inline bool 188a4311745SChris Wilson i915_gem_object_never_bind_ggtt(const struct drm_i915_gem_object *obj) 189a4311745SChris Wilson { 1903cbad5d7SChris Wilson return i915_gem_object_type_has(obj, I915_GEM_OBJECT_NO_GGTT); 191a4311745SChris Wilson } 192a4311745SChris Wilson 193a4311745SChris Wilson static inline bool 19498932149SChris Wilson i915_gem_object_needs_async_cancel(const struct drm_i915_gem_object *obj) 19598932149SChris Wilson { 1963cbad5d7SChris Wilson return i915_gem_object_type_has(obj, I915_GEM_OBJECT_ASYNC_CANCEL); 19798932149SChris Wilson } 19898932149SChris Wilson 19998932149SChris Wilson static inline bool 20098932149SChris Wilson i915_gem_object_is_framebuffer(const struct drm_i915_gem_object *obj) 20198932149SChris Wilson { 2028e7cb179SChris Wilson return READ_ONCE(obj->frontbuffer); 20398932149SChris Wilson } 20498932149SChris Wilson 20598932149SChris Wilson static inline unsigned int 20698932149SChris Wilson i915_gem_object_get_tiling(const struct drm_i915_gem_object *obj) 20798932149SChris Wilson { 20898932149SChris Wilson return obj->tiling_and_stride & TILING_MASK; 20998932149SChris Wilson } 21098932149SChris Wilson 21198932149SChris Wilson static inline bool 21298932149SChris Wilson i915_gem_object_is_tiled(const struct drm_i915_gem_object *obj) 21398932149SChris Wilson { 21498932149SChris Wilson return i915_gem_object_get_tiling(obj) != I915_TILING_NONE; 21598932149SChris Wilson } 21698932149SChris Wilson 21798932149SChris Wilson static inline unsigned int 21898932149SChris Wilson i915_gem_object_get_stride(const struct drm_i915_gem_object *obj) 21998932149SChris Wilson { 22098932149SChris Wilson return obj->tiling_and_stride & STRIDE_MASK; 22198932149SChris Wilson } 22298932149SChris Wilson 22398932149SChris Wilson static inline unsigned int 22498932149SChris Wilson i915_gem_tile_height(unsigned int tiling) 22598932149SChris Wilson { 22698932149SChris Wilson GEM_BUG_ON(!tiling); 22798932149SChris Wilson return tiling == I915_TILING_Y ? 32 : 8; 22898932149SChris Wilson } 22998932149SChris Wilson 23098932149SChris Wilson static inline unsigned int 23198932149SChris Wilson i915_gem_object_get_tile_height(const struct drm_i915_gem_object *obj) 23298932149SChris Wilson { 23398932149SChris Wilson return i915_gem_tile_height(i915_gem_object_get_tiling(obj)); 23498932149SChris Wilson } 23598932149SChris Wilson 23698932149SChris Wilson static inline unsigned int 23798932149SChris Wilson i915_gem_object_get_tile_row_size(const struct drm_i915_gem_object *obj) 23898932149SChris Wilson { 23998932149SChris Wilson return (i915_gem_object_get_stride(obj) * 24098932149SChris Wilson i915_gem_object_get_tile_height(obj)); 24198932149SChris Wilson } 24298932149SChris Wilson 24398932149SChris Wilson int i915_gem_object_set_tiling(struct drm_i915_gem_object *obj, 24498932149SChris Wilson unsigned int tiling, unsigned int stride); 24598932149SChris Wilson 24698932149SChris Wilson struct scatterlist * 24798932149SChris Wilson i915_gem_object_get_sg(struct drm_i915_gem_object *obj, 24898932149SChris Wilson unsigned int n, unsigned int *offset); 24998932149SChris Wilson 25098932149SChris Wilson struct page * 25198932149SChris Wilson i915_gem_object_get_page(struct drm_i915_gem_object *obj, 25298932149SChris Wilson unsigned int n); 25398932149SChris Wilson 25498932149SChris Wilson struct page * 25598932149SChris Wilson i915_gem_object_get_dirty_page(struct drm_i915_gem_object *obj, 25698932149SChris Wilson unsigned int n); 25798932149SChris Wilson 25898932149SChris Wilson dma_addr_t 25998932149SChris Wilson i915_gem_object_get_dma_address_len(struct drm_i915_gem_object *obj, 26098932149SChris Wilson unsigned long n, 26198932149SChris Wilson unsigned int *len); 26298932149SChris Wilson 26398932149SChris Wilson dma_addr_t 26498932149SChris Wilson i915_gem_object_get_dma_address(struct drm_i915_gem_object *obj, 26598932149SChris Wilson unsigned long n); 26698932149SChris Wilson 26798932149SChris Wilson void __i915_gem_object_set_pages(struct drm_i915_gem_object *obj, 26898932149SChris Wilson struct sg_table *pages, 26998932149SChris Wilson unsigned int sg_page_sizes); 270f033428dSChris Wilson 271f033428dSChris Wilson int ____i915_gem_object_get_pages(struct drm_i915_gem_object *obj); 27298932149SChris Wilson int __i915_gem_object_get_pages(struct drm_i915_gem_object *obj); 27398932149SChris Wilson 27474ceefd1SDaniel Vetter enum i915_mm_subclass { /* lockdep subclass for obj->mm.lock/struct_mutex */ 27574ceefd1SDaniel Vetter I915_MM_NORMAL = 0, 27674ceefd1SDaniel Vetter /* 27774ceefd1SDaniel Vetter * Only used by struct_mutex, when called "recursively" from 27874ceefd1SDaniel Vetter * direct-reclaim-esque. Safe because there is only every one 27974ceefd1SDaniel Vetter * struct_mutex in the entire system. 28074ceefd1SDaniel Vetter */ 28174ceefd1SDaniel Vetter I915_MM_SHRINKER = 1, 28274ceefd1SDaniel Vetter /* 28374ceefd1SDaniel Vetter * Used for obj->mm.lock when allocating pages. Safe because the object 28474ceefd1SDaniel Vetter * isn't yet on any LRU, and therefore the shrinker can't deadlock on 28574ceefd1SDaniel Vetter * it. As soon as the object has pages, obj->mm.lock nests within 28674ceefd1SDaniel Vetter * fs_reclaim. 28774ceefd1SDaniel Vetter */ 28874ceefd1SDaniel Vetter I915_MM_GET_PAGES = 1, 28974ceefd1SDaniel Vetter }; 29074ceefd1SDaniel Vetter 29198932149SChris Wilson static inline int __must_check 29298932149SChris Wilson i915_gem_object_pin_pages(struct drm_i915_gem_object *obj) 29398932149SChris Wilson { 29474ceefd1SDaniel Vetter might_lock_nested(&obj->mm.lock, I915_MM_GET_PAGES); 29598932149SChris Wilson 29698932149SChris Wilson if (atomic_inc_not_zero(&obj->mm.pages_pin_count)) 29798932149SChris Wilson return 0; 29898932149SChris Wilson 29998932149SChris Wilson return __i915_gem_object_get_pages(obj); 30098932149SChris Wilson } 30198932149SChris Wilson 30298932149SChris Wilson static inline bool 30398932149SChris Wilson i915_gem_object_has_pages(struct drm_i915_gem_object *obj) 30498932149SChris Wilson { 30598932149SChris Wilson return !IS_ERR_OR_NULL(READ_ONCE(obj->mm.pages)); 30698932149SChris Wilson } 30798932149SChris Wilson 30898932149SChris Wilson static inline void 30998932149SChris Wilson __i915_gem_object_pin_pages(struct drm_i915_gem_object *obj) 31098932149SChris Wilson { 31198932149SChris Wilson GEM_BUG_ON(!i915_gem_object_has_pages(obj)); 31298932149SChris Wilson 31398932149SChris Wilson atomic_inc(&obj->mm.pages_pin_count); 31498932149SChris Wilson } 31598932149SChris Wilson 31698932149SChris Wilson static inline bool 31798932149SChris Wilson i915_gem_object_has_pinned_pages(struct drm_i915_gem_object *obj) 31898932149SChris Wilson { 31998932149SChris Wilson return atomic_read(&obj->mm.pages_pin_count); 32098932149SChris Wilson } 32198932149SChris Wilson 32298932149SChris Wilson static inline void 32398932149SChris Wilson __i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj) 32498932149SChris Wilson { 32598932149SChris Wilson GEM_BUG_ON(!i915_gem_object_has_pages(obj)); 32698932149SChris Wilson GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj)); 32798932149SChris Wilson 32898932149SChris Wilson atomic_dec(&obj->mm.pages_pin_count); 32998932149SChris Wilson } 33098932149SChris Wilson 33198932149SChris Wilson static inline void 33298932149SChris Wilson i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj) 33398932149SChris Wilson { 33498932149SChris Wilson __i915_gem_object_unpin_pages(obj); 33598932149SChris Wilson } 33698932149SChris Wilson 337f86dbacbSDaniel Vetter int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj); 338f033428dSChris Wilson void i915_gem_object_truncate(struct drm_i915_gem_object *obj); 339f033428dSChris Wilson void i915_gem_object_writeback(struct drm_i915_gem_object *obj); 34098932149SChris Wilson 34198932149SChris Wilson enum i915_map_type { 34298932149SChris Wilson I915_MAP_WB = 0, 34398932149SChris Wilson I915_MAP_WC, 34498932149SChris Wilson #define I915_MAP_OVERRIDE BIT(31) 34598932149SChris Wilson I915_MAP_FORCE_WB = I915_MAP_WB | I915_MAP_OVERRIDE, 34698932149SChris Wilson I915_MAP_FORCE_WC = I915_MAP_WC | I915_MAP_OVERRIDE, 34798932149SChris Wilson }; 34898932149SChris Wilson 34998932149SChris Wilson /** 35098932149SChris Wilson * i915_gem_object_pin_map - return a contiguous mapping of the entire object 35198932149SChris Wilson * @obj: the object to map into kernel address space 35298932149SChris Wilson * @type: the type of mapping, used to select pgprot_t 35398932149SChris Wilson * 35498932149SChris Wilson * Calls i915_gem_object_pin_pages() to prevent reaping of the object's 35598932149SChris Wilson * pages and then returns a contiguous mapping of the backing storage into 35698932149SChris Wilson * the kernel address space. Based on the @type of mapping, the PTE will be 35798932149SChris Wilson * set to either WriteBack or WriteCombine (via pgprot_t). 35898932149SChris Wilson * 35998932149SChris Wilson * The caller is responsible for calling i915_gem_object_unpin_map() when the 36098932149SChris Wilson * mapping is no longer required. 36198932149SChris Wilson * 36298932149SChris Wilson * Returns the pointer through which to access the mapped object, or an 36398932149SChris Wilson * ERR_PTR() on error. 36498932149SChris Wilson */ 36598932149SChris Wilson void *__must_check i915_gem_object_pin_map(struct drm_i915_gem_object *obj, 36698932149SChris Wilson enum i915_map_type type); 36798932149SChris Wilson 36898932149SChris Wilson void __i915_gem_object_flush_map(struct drm_i915_gem_object *obj, 36998932149SChris Wilson unsigned long offset, 37098932149SChris Wilson unsigned long size); 37198932149SChris Wilson static inline void i915_gem_object_flush_map(struct drm_i915_gem_object *obj) 37298932149SChris Wilson { 37398932149SChris Wilson __i915_gem_object_flush_map(obj, 0, obj->base.size); 37498932149SChris Wilson } 37598932149SChris Wilson 37698932149SChris Wilson /** 37798932149SChris Wilson * i915_gem_object_unpin_map - releases an earlier mapping 37898932149SChris Wilson * @obj: the object to unmap 37998932149SChris Wilson * 38098932149SChris Wilson * After pinning the object and mapping its pages, once you are finished 38198932149SChris Wilson * with your access, call i915_gem_object_unpin_map() to release the pin 38298932149SChris Wilson * upon the mapping. Once the pin count reaches zero, that mapping may be 38398932149SChris Wilson * removed. 38498932149SChris Wilson */ 38598932149SChris Wilson static inline void i915_gem_object_unpin_map(struct drm_i915_gem_object *obj) 38698932149SChris Wilson { 38798932149SChris Wilson i915_gem_object_unpin_pages(obj); 38898932149SChris Wilson } 38998932149SChris Wilson 390b414fcd5SChris Wilson void __i915_gem_object_release_mmap(struct drm_i915_gem_object *obj); 391b414fcd5SChris Wilson void i915_gem_object_release_mmap(struct drm_i915_gem_object *obj); 392b414fcd5SChris Wilson 393b414fcd5SChris Wilson void 394b414fcd5SChris Wilson i915_gem_object_flush_write_domain(struct drm_i915_gem_object *obj, 395b414fcd5SChris Wilson unsigned int flush_domains); 396b414fcd5SChris Wilson 397f0e4a063SChris Wilson int i915_gem_object_prepare_read(struct drm_i915_gem_object *obj, 398f0e4a063SChris Wilson unsigned int *needs_clflush); 399f0e4a063SChris Wilson int i915_gem_object_prepare_write(struct drm_i915_gem_object *obj, 400f0e4a063SChris Wilson unsigned int *needs_clflush); 401f0e4a063SChris Wilson #define CLFLUSH_BEFORE BIT(0) 402f0e4a063SChris Wilson #define CLFLUSH_AFTER BIT(1) 403f0e4a063SChris Wilson #define CLFLUSH_FLAGS (CLFLUSH_BEFORE | CLFLUSH_AFTER) 404f0e4a063SChris Wilson 405f0e4a063SChris Wilson static inline void 406f0e4a063SChris Wilson i915_gem_object_finish_access(struct drm_i915_gem_object *obj) 407f0e4a063SChris Wilson { 408f0e4a063SChris Wilson i915_gem_object_unpin_pages(obj); 4096951e589SChris Wilson i915_gem_object_unlock(obj); 410f0e4a063SChris Wilson } 411f0e4a063SChris Wilson 41298932149SChris Wilson static inline struct intel_engine_cs * 41398932149SChris Wilson i915_gem_object_last_write_engine(struct drm_i915_gem_object *obj) 41498932149SChris Wilson { 41598932149SChris Wilson struct intel_engine_cs *engine = NULL; 41698932149SChris Wilson struct dma_fence *fence; 41798932149SChris Wilson 41898932149SChris Wilson rcu_read_lock(); 41952791eeeSChristian König fence = dma_resv_get_excl_rcu(obj->base.resv); 42098932149SChris Wilson rcu_read_unlock(); 42198932149SChris Wilson 42298932149SChris Wilson if (fence && dma_fence_is_i915(fence) && !dma_fence_is_signaled(fence)) 42398932149SChris Wilson engine = to_request(fence)->engine; 42498932149SChris Wilson dma_fence_put(fence); 42598932149SChris Wilson 42698932149SChris Wilson return engine; 42798932149SChris Wilson } 42898932149SChris Wilson 42998932149SChris Wilson void i915_gem_object_set_cache_coherency(struct drm_i915_gem_object *obj, 43098932149SChris Wilson unsigned int cache_level); 43198932149SChris Wilson void i915_gem_object_flush_if_display(struct drm_i915_gem_object *obj); 43298932149SChris Wilson 433f0e4a063SChris Wilson int __must_check 434f0e4a063SChris Wilson i915_gem_object_set_to_wc_domain(struct drm_i915_gem_object *obj, bool write); 435f0e4a063SChris Wilson int __must_check 436f0e4a063SChris Wilson i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write); 437f0e4a063SChris Wilson int __must_check 438f0e4a063SChris Wilson i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write); 439f0e4a063SChris Wilson struct i915_vma * __must_check 440f0e4a063SChris Wilson i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj, 441f0e4a063SChris Wilson u32 alignment, 442f0e4a063SChris Wilson const struct i915_ggtt_view *view, 443f0e4a063SChris Wilson unsigned int flags); 444f0e4a063SChris Wilson void i915_gem_object_unpin_from_display_plane(struct i915_vma *vma); 445f0e4a063SChris Wilson 4461aff1903SChris Wilson void i915_gem_object_make_unshrinkable(struct drm_i915_gem_object *obj); 4471aff1903SChris Wilson void i915_gem_object_make_shrinkable(struct drm_i915_gem_object *obj); 4481aff1903SChris Wilson void i915_gem_object_make_purgeable(struct drm_i915_gem_object *obj); 4491aff1903SChris Wilson 4508475355fSChris Wilson static inline bool cpu_write_needs_clflush(struct drm_i915_gem_object *obj) 4518475355fSChris Wilson { 4528475355fSChris Wilson if (obj->cache_dirty) 4538475355fSChris Wilson return false; 4548475355fSChris Wilson 4558475355fSChris Wilson if (!(obj->cache_coherent & I915_BO_CACHE_COHERENT_FOR_WRITE)) 4568475355fSChris Wilson return true; 4578475355fSChris Wilson 4585a90606dSChris Wilson /* Currently in use by HW (display engine)? Keep flushed. */ 4595a90606dSChris Wilson return i915_gem_object_is_framebuffer(obj); 4608475355fSChris Wilson } 4618475355fSChris Wilson 4628475355fSChris Wilson static inline void __start_cpu_write(struct drm_i915_gem_object *obj) 4638475355fSChris Wilson { 4648475355fSChris Wilson obj->read_domains = I915_GEM_DOMAIN_CPU; 4658475355fSChris Wilson obj->write_domain = I915_GEM_DOMAIN_CPU; 4668475355fSChris Wilson if (cpu_write_needs_clflush(obj)) 4678475355fSChris Wilson obj->cache_dirty = true; 4688475355fSChris Wilson } 46998932149SChris Wilson 470d45a1a53SChris Wilson int i915_gem_object_wait(struct drm_i915_gem_object *obj, 471d45a1a53SChris Wilson unsigned int flags, 472d45a1a53SChris Wilson long timeout); 473d45a1a53SChris Wilson int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj, 474d45a1a53SChris Wilson unsigned int flags, 475d45a1a53SChris Wilson const struct i915_sched_attr *attr); 476d45a1a53SChris Wilson 47798932149SChris Wilson #endif 478