2 * SPDX-License-Identifier: MIT
4 * Copyright © 2016 Intel Corporation
7 #ifndef __I915_GEM_OBJECT_H__
8 #define __I915_GEM_OBJECT_H__
10 #include <drm/drm_gem.h>
11 #include <drm/drm_file.h>
12 #include <drm/drm_device.h>
14 #include "intel_memory_region.h"
15 #include "i915_gem_object_types.h"
16 #include "i915_gem_gtt.h"
17 #include "i915_gem_ww.h"
18 #include "i915_vma_types.h"
22 #define obj_to_i915(obj__) to_i915((obj__)->base.dev)
24 static inline bool i915_gem_object_size_2big(u64 size)
26 struct drm_i915_gem_object *obj;
28 if (overflows_type(size, obj->base.size))
34 unsigned int i915_gem_get_pat_index(struct drm_i915_private *i915,
35 enum i915_cache_level level);
36 bool i915_gem_object_has_cache_level(const struct drm_i915_gem_object *obj,
37 enum i915_cache_level lvl);
38 void i915_gem_init__objects(struct drm_i915_private *i915);
40 void i915_objects_module_exit(void);
41 int i915_objects_module_init(void);
43 struct drm_i915_gem_object *i915_gem_object_alloc(void);
44 void i915_gem_object_free(struct drm_i915_gem_object *obj);
46 void i915_gem_object_init(struct drm_i915_gem_object *obj,
47 const struct drm_i915_gem_object_ops *ops,
48 struct lock_class_key *key,
49 unsigned alloc_flags);
51 void __i915_gem_object_fini(struct drm_i915_gem_object *obj);
53 struct drm_i915_gem_object *
54 i915_gem_object_create_shmem(struct drm_i915_private *i915,
55 resource_size_t size);
56 struct drm_i915_gem_object *
57 i915_gem_object_create_shmem_from_data(struct drm_i915_private *i915,
58 const void *data, resource_size_t size);
59 struct drm_i915_gem_object *
60 __i915_gem_object_create_user(struct drm_i915_private *i915, u64 size,
61 struct intel_memory_region **placements,
62 unsigned int n_placements);
64 extern const struct drm_i915_gem_object_ops i915_gem_shmem_ops;
66 void __i915_gem_object_release_shmem(struct drm_i915_gem_object *obj,
67 struct sg_table *pages,
70 int i915_gem_object_pwrite_phys(struct drm_i915_gem_object *obj,
71 const struct drm_i915_gem_pwrite *args);
72 int i915_gem_object_pread_phys(struct drm_i915_gem_object *obj,
73 const struct drm_i915_gem_pread *args);
75 int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, int align);
76 void i915_gem_object_put_pages_shmem(struct drm_i915_gem_object *obj,
77 struct sg_table *pages);
78 void i915_gem_object_put_pages_phys(struct drm_i915_gem_object *obj,
79 struct sg_table *pages);
81 void i915_gem_flush_free_objects(struct drm_i915_private *i915);
84 __i915_gem_object_unset_pages(struct drm_i915_gem_object *obj);
87 * i915_gem_object_lookup_rcu - look up a temporary GEM object from its handle
88 * @file: DRM file private date
89 * @handle: userspace handle
93 * A pointer to the object named by the handle if such exists on @filp, NULL
94 * otherwise. This object is only valid whilst under the RCU read lock, and
95 * note carefully the object may be in the process of being destroyed.
97 static inline struct drm_i915_gem_object *
98 i915_gem_object_lookup_rcu(struct drm_file *file, u32 handle)
100 #ifdef CONFIG_LOCKDEP
101 WARN_ON(debug_locks && !lock_is_held(&rcu_lock_map));
103 return idr_find(&file->object_idr, handle);
106 static inline struct drm_i915_gem_object *
107 i915_gem_object_get_rcu(struct drm_i915_gem_object *obj)
109 if (obj && !kref_get_unless_zero(&obj->base.refcount))
115 static inline struct drm_i915_gem_object *
116 i915_gem_object_lookup(struct drm_file *file, u32 handle)
118 struct drm_i915_gem_object *obj;
121 obj = i915_gem_object_lookup_rcu(file, handle);
122 obj = i915_gem_object_get_rcu(obj);
129 struct drm_gem_object *
130 drm_gem_object_lookup(struct drm_file *file, u32 handle);
132 __attribute__((nonnull))
133 static inline struct drm_i915_gem_object *
134 i915_gem_object_get(struct drm_i915_gem_object *obj)
136 drm_gem_object_get(&obj->base);
140 __attribute__((nonnull))
142 i915_gem_object_put(struct drm_i915_gem_object *obj)
144 __drm_gem_object_put(&obj->base);
147 #define assert_object_held(obj) dma_resv_assert_held((obj)->base.resv)
150 * If more than one potential simultaneous locker, assert held.
152 static inline void assert_object_held_shared(const struct drm_i915_gem_object *obj)
155 * Note mm list lookup is protected by
156 * kref_get_unless_zero().
158 if (IS_ENABLED(CONFIG_LOCKDEP) &&
159 kref_read(&obj->base.refcount) > 0)
160 assert_object_held(obj);
163 static inline int __i915_gem_object_lock(struct drm_i915_gem_object *obj,
164 struct i915_gem_ww_ctx *ww,
170 ret = dma_resv_lock_interruptible(obj->base.resv, ww ? &ww->ctx : NULL);
172 ret = dma_resv_lock(obj->base.resv, ww ? &ww->ctx : NULL);
175 i915_gem_object_get(obj);
176 list_add_tail(&obj->obj_link, &ww->obj_list);
178 if (ret == -EALREADY)
181 if (ret == -EDEADLK) {
182 i915_gem_object_get(obj);
189 static inline int i915_gem_object_lock(struct drm_i915_gem_object *obj,
190 struct i915_gem_ww_ctx *ww)
192 return __i915_gem_object_lock(obj, ww, ww && ww->intr);
195 static inline int i915_gem_object_lock_interruptible(struct drm_i915_gem_object *obj,
196 struct i915_gem_ww_ctx *ww)
198 WARN_ON(ww && !ww->intr);
199 return __i915_gem_object_lock(obj, ww, true);
202 static inline bool i915_gem_object_trylock(struct drm_i915_gem_object *obj,
203 struct i915_gem_ww_ctx *ww)
206 return dma_resv_trylock(obj->base.resv);
208 return ww_mutex_trylock(&obj->base.resv->lock, &ww->ctx);
211 static inline void i915_gem_object_unlock(struct drm_i915_gem_object *obj)
213 if (obj->ops->adjust_lru)
214 obj->ops->adjust_lru(obj);
216 dma_resv_unlock(obj->base.resv);
220 i915_gem_object_set_readonly(struct drm_i915_gem_object *obj)
222 obj->flags |= I915_BO_READONLY;
226 i915_gem_object_is_readonly(const struct drm_i915_gem_object *obj)
228 return obj->flags & I915_BO_READONLY;
232 i915_gem_object_is_contiguous(const struct drm_i915_gem_object *obj)
234 return obj->flags & I915_BO_ALLOC_CONTIGUOUS;
238 i915_gem_object_is_volatile(const struct drm_i915_gem_object *obj)
240 return obj->flags & I915_BO_ALLOC_VOLATILE;
244 i915_gem_object_set_volatile(struct drm_i915_gem_object *obj)
246 obj->flags |= I915_BO_ALLOC_VOLATILE;
250 i915_gem_object_has_tiling_quirk(struct drm_i915_gem_object *obj)
252 return test_bit(I915_TILING_QUIRK_BIT, &obj->flags);
256 i915_gem_object_set_tiling_quirk(struct drm_i915_gem_object *obj)
258 set_bit(I915_TILING_QUIRK_BIT, &obj->flags);
262 i915_gem_object_clear_tiling_quirk(struct drm_i915_gem_object *obj)
264 clear_bit(I915_TILING_QUIRK_BIT, &obj->flags);
268 i915_gem_object_is_protected(const struct drm_i915_gem_object *obj)
270 return obj->flags & I915_BO_PROTECTED;
274 i915_gem_object_type_has(const struct drm_i915_gem_object *obj,
277 return obj->ops->flags & flags;
280 bool i915_gem_object_has_struct_page(const struct drm_i915_gem_object *obj);
282 bool i915_gem_object_has_iomem(const struct drm_i915_gem_object *obj);
285 i915_gem_object_is_shrinkable(const struct drm_i915_gem_object *obj)
287 return i915_gem_object_type_has(obj, I915_GEM_OBJECT_IS_SHRINKABLE);
291 i915_gem_object_has_self_managed_shrink_list(const struct drm_i915_gem_object *obj)
293 return i915_gem_object_type_has(obj, I915_GEM_OBJECT_SELF_MANAGED_SHRINK_LIST);
297 i915_gem_object_is_proxy(const struct drm_i915_gem_object *obj)
299 return i915_gem_object_type_has(obj, I915_GEM_OBJECT_IS_PROXY);
303 i915_gem_object_never_mmap(const struct drm_i915_gem_object *obj)
305 return i915_gem_object_type_has(obj, I915_GEM_OBJECT_NO_MMAP);
309 i915_gem_object_is_framebuffer(const struct drm_i915_gem_object *obj)
311 return READ_ONCE(obj->frontbuffer) || obj->is_dpt;
314 static inline unsigned int
315 i915_gem_object_get_tiling(const struct drm_i915_gem_object *obj)
317 return obj->tiling_and_stride & TILING_MASK;
321 i915_gem_object_is_tiled(const struct drm_i915_gem_object *obj)
323 return i915_gem_object_get_tiling(obj) != I915_TILING_NONE;
326 static inline unsigned int
327 i915_gem_object_get_stride(const struct drm_i915_gem_object *obj)
329 return obj->tiling_and_stride & STRIDE_MASK;
332 static inline unsigned int
333 i915_gem_tile_height(unsigned int tiling)
336 return tiling == I915_TILING_Y ? 32 : 8;
339 static inline unsigned int
340 i915_gem_object_get_tile_height(const struct drm_i915_gem_object *obj)
342 return i915_gem_tile_height(i915_gem_object_get_tiling(obj));
345 static inline unsigned int
346 i915_gem_object_get_tile_row_size(const struct drm_i915_gem_object *obj)
348 return (i915_gem_object_get_stride(obj) *
349 i915_gem_object_get_tile_height(obj));
352 int i915_gem_object_set_tiling(struct drm_i915_gem_object *obj,
353 unsigned int tiling, unsigned int stride);
356 * __i915_gem_object_page_iter_get_sg - helper to find the target scatterlist
357 * pointer and the target page position using pgoff_t n input argument and
358 * i915_gem_object_page_iter
359 * @obj: i915 GEM buffer object
360 * @iter: i915 GEM buffer object page iterator
362 * @offset: searched physical offset,
363 * it will be used for returning physical page offset value
365 * Context: Takes and releases the mutex lock of the i915_gem_object_page_iter.
366 * Takes and releases the RCU lock to search the radix_tree of
367 * i915_gem_object_page_iter.
370 * The target scatterlist pointer and the target page position.
372 * Recommended to use wrapper macro: i915_gem_object_page_iter_get_sg()
375 __i915_gem_object_page_iter_get_sg(struct drm_i915_gem_object *obj,
376 struct i915_gem_object_page_iter *iter,
378 unsigned int *offset);
381 * i915_gem_object_page_iter_get_sg - wrapper macro for
382 * __i915_gem_object_page_iter_get_sg()
383 * @obj: i915 GEM buffer object
384 * @it: i915 GEM buffer object page iterator
386 * @offset: searched physical offset,
387 * it will be used for returning physical page offset value
389 * Context: Takes and releases the mutex lock of the i915_gem_object_page_iter.
390 * Takes and releases the RCU lock to search the radix_tree of
391 * i915_gem_object_page_iter.
394 * The target scatterlist pointer and the target page position.
396 * In order to avoid the truncation of the input parameter, it checks the page
397 * offset n's type from the input parameter before calling
398 * __i915_gem_object_page_iter_get_sg().
400 #define i915_gem_object_page_iter_get_sg(obj, it, n, offset) ({ \
401 static_assert(castable_to_type(n, pgoff_t)); \
402 __i915_gem_object_page_iter_get_sg(obj, it, n, offset); \
406 * __i915_gem_object_get_sg - helper to find the target scatterlist
407 * pointer and the target page position using pgoff_t n input argument and
408 * drm_i915_gem_object. It uses an internal shmem scatterlist lookup function.
409 * @obj: i915 GEM buffer object
411 * @offset: searched physical offset,
412 * it will be used for returning physical page offset value
414 * It uses drm_i915_gem_object's internal shmem scatterlist lookup function as
415 * i915_gem_object_page_iter and calls __i915_gem_object_page_iter_get_sg().
418 * The target scatterlist pointer and the target page position.
420 * Recommended to use wrapper macro: i915_gem_object_get_sg()
421 * See also __i915_gem_object_page_iter_get_sg()
423 static inline struct scatterlist *
424 __i915_gem_object_get_sg(struct drm_i915_gem_object *obj, pgoff_t n,
425 unsigned int *offset)
427 return __i915_gem_object_page_iter_get_sg(obj, &obj->mm.get_page, n, offset);
431 * i915_gem_object_get_sg - wrapper macro for __i915_gem_object_get_sg()
432 * @obj: i915 GEM buffer object
434 * @offset: searched physical offset,
435 * it will be used for returning physical page offset value
438 * The target scatterlist pointer and the target page position.
440 * In order to avoid the truncation of the input parameter, it checks the page
441 * offset n's type from the input parameter before calling
442 * __i915_gem_object_get_sg().
443 * See also __i915_gem_object_page_iter_get_sg()
445 #define i915_gem_object_get_sg(obj, n, offset) ({ \
446 static_assert(castable_to_type(n, pgoff_t)); \
447 __i915_gem_object_get_sg(obj, n, offset); \
451 * __i915_gem_object_get_sg_dma - helper to find the target scatterlist
452 * pointer and the target page position using pgoff_t n input argument and
453 * drm_i915_gem_object. It uses an internal DMA mapped scatterlist lookup function
454 * @obj: i915 GEM buffer object
456 * @offset: searched physical offset,
457 * it will be used for returning physical page offset value
459 * It uses drm_i915_gem_object's internal DMA mapped scatterlist lookup function
460 * as i915_gem_object_page_iter and calls __i915_gem_object_page_iter_get_sg().
463 * The target scatterlist pointer and the target page position.
465 * Recommended to use wrapper macro: i915_gem_object_get_sg_dma()
466 * See also __i915_gem_object_page_iter_get_sg()
468 static inline struct scatterlist *
469 __i915_gem_object_get_sg_dma(struct drm_i915_gem_object *obj, pgoff_t n,
470 unsigned int *offset)
472 return __i915_gem_object_page_iter_get_sg(obj, &obj->mm.get_dma_page, n, offset);
476 * i915_gem_object_get_sg_dma - wrapper macro for __i915_gem_object_get_sg_dma()
477 * @obj: i915 GEM buffer object
479 * @offset: searched physical offset,
480 * it will be used for returning physical page offset value
483 * The target scatterlist pointer and the target page position.
485 * In order to avoid the truncation of the input parameter, it checks the page
486 * offset n's type from the input parameter before calling
487 * __i915_gem_object_get_sg_dma().
488 * See also __i915_gem_object_page_iter_get_sg()
490 #define i915_gem_object_get_sg_dma(obj, n, offset) ({ \
491 static_assert(castable_to_type(n, pgoff_t)); \
492 __i915_gem_object_get_sg_dma(obj, n, offset); \
496 * __i915_gem_object_get_page - helper to find the target page with a page offset
497 * @obj: i915 GEM buffer object
500 * It uses drm_i915_gem_object's internal shmem scatterlist lookup function as
501 * i915_gem_object_page_iter and calls __i915_gem_object_page_iter_get_sg()
505 * The target page pointer.
507 * Recommended to use wrapper macro: i915_gem_object_get_page()
508 * See also __i915_gem_object_page_iter_get_sg()
511 __i915_gem_object_get_page(struct drm_i915_gem_object *obj, pgoff_t n);
514 * i915_gem_object_get_page - wrapper macro for __i915_gem_object_get_page
515 * @obj: i915 GEM buffer object
519 * The target page pointer.
521 * In order to avoid the truncation of the input parameter, it checks the page
522 * offset n's type from the input parameter before calling
523 * __i915_gem_object_get_page().
524 * See also __i915_gem_object_page_iter_get_sg()
526 #define i915_gem_object_get_page(obj, n) ({ \
527 static_assert(castable_to_type(n, pgoff_t)); \
528 __i915_gem_object_get_page(obj, n); \
532 * __i915_gem_object_get_dirty_page - helper to find the target page with a page
534 * @obj: i915 GEM buffer object
537 * It works like i915_gem_object_get_page(), but it marks the returned page dirty.
540 * The target page pointer.
542 * Recommended to use wrapper macro: i915_gem_object_get_dirty_page()
543 * See also __i915_gem_object_page_iter_get_sg() and __i915_gem_object_get_page()
546 __i915_gem_object_get_dirty_page(struct drm_i915_gem_object *obj, pgoff_t n);
549 * i915_gem_object_get_dirty_page - wrapper macro for __i915_gem_object_get_dirty_page
550 * @obj: i915 GEM buffer object
554 * The target page pointer.
556 * In order to avoid the truncation of the input parameter, it checks the page
557 * offset n's type from the input parameter before calling
558 * __i915_gem_object_get_dirty_page().
559 * See also __i915_gem_object_page_iter_get_sg() and __i915_gem_object_get_page()
561 #define i915_gem_object_get_dirty_page(obj, n) ({ \
562 static_assert(castable_to_type(n, pgoff_t)); \
563 __i915_gem_object_get_dirty_page(obj, n); \
567 * __i915_gem_object_get_dma_address_len - helper to get bus addresses of
568 * targeted DMA mapped scatterlist from i915 GEM buffer object and it's length
569 * @obj: i915 GEM buffer object
571 * @len: DMA mapped scatterlist's DMA bus addresses length to return
574 * Bus addresses of targeted DMA mapped scatterlist
576 * Recommended to use wrapper macro: i915_gem_object_get_dma_address_len()
577 * See also __i915_gem_object_page_iter_get_sg() and __i915_gem_object_get_sg_dma()
580 __i915_gem_object_get_dma_address_len(struct drm_i915_gem_object *obj, pgoff_t n,
584 * i915_gem_object_get_dma_address_len - wrapper macro for
585 * __i915_gem_object_get_dma_address_len
586 * @obj: i915 GEM buffer object
588 * @len: DMA mapped scatterlist's DMA bus addresses length to return
591 * Bus addresses of targeted DMA mapped scatterlist
593 * In order to avoid the truncation of the input parameter, it checks the page
594 * offset n's type from the input parameter before calling
595 * __i915_gem_object_get_dma_address_len().
596 * See also __i915_gem_object_page_iter_get_sg() and
597 * __i915_gem_object_get_dma_address_len()
599 #define i915_gem_object_get_dma_address_len(obj, n, len) ({ \
600 static_assert(castable_to_type(n, pgoff_t)); \
601 __i915_gem_object_get_dma_address_len(obj, n, len); \
605 * __i915_gem_object_get_dma_address - helper to get bus addresses of
606 * targeted DMA mapped scatterlist from i915 GEM buffer object
607 * @obj: i915 GEM buffer object
611 * Bus addresses of targeted DMA mapped scatterlis
613 * Recommended to use wrapper macro: i915_gem_object_get_dma_address()
614 * See also __i915_gem_object_page_iter_get_sg() and __i915_gem_object_get_sg_dma()
617 __i915_gem_object_get_dma_address(struct drm_i915_gem_object *obj, pgoff_t n);
620 * i915_gem_object_get_dma_address - wrapper macro for
621 * __i915_gem_object_get_dma_address
622 * @obj: i915 GEM buffer object
626 * Bus addresses of targeted DMA mapped scatterlist
628 * In order to avoid the truncation of the input parameter, it checks the page
629 * offset n's type from the input parameter before calling
630 * __i915_gem_object_get_dma_address().
631 * See also __i915_gem_object_page_iter_get_sg() and
632 * __i915_gem_object_get_dma_address()
634 #define i915_gem_object_get_dma_address(obj, n) ({ \
635 static_assert(castable_to_type(n, pgoff_t)); \
636 __i915_gem_object_get_dma_address(obj, n); \
639 void __i915_gem_object_set_pages(struct drm_i915_gem_object *obj,
640 struct sg_table *pages);
642 int ____i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
643 int __i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
645 static inline int __must_check
646 i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
648 assert_object_held(obj);
650 if (atomic_inc_not_zero(&obj->mm.pages_pin_count))
653 return __i915_gem_object_get_pages(obj);
656 int i915_gem_object_pin_pages_unlocked(struct drm_i915_gem_object *obj);
659 i915_gem_object_has_pages(struct drm_i915_gem_object *obj)
661 return !IS_ERR_OR_NULL(READ_ONCE(obj->mm.pages));
665 __i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
667 GEM_BUG_ON(!i915_gem_object_has_pages(obj));
669 atomic_inc(&obj->mm.pages_pin_count);
673 i915_gem_object_has_pinned_pages(struct drm_i915_gem_object *obj)
675 return atomic_read(&obj->mm.pages_pin_count);
679 __i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
681 GEM_BUG_ON(!i915_gem_object_has_pages(obj));
682 GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj));
684 atomic_dec(&obj->mm.pages_pin_count);
688 i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
690 __i915_gem_object_unpin_pages(obj);
693 int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj);
694 int i915_gem_object_truncate(struct drm_i915_gem_object *obj);
697 * i915_gem_object_pin_map - return a contiguous mapping of the entire object
698 * @obj: the object to map into kernel address space
699 * @type: the type of mapping, used to select pgprot_t
701 * Calls i915_gem_object_pin_pages() to prevent reaping of the object's
702 * pages and then returns a contiguous mapping of the backing storage into
703 * the kernel address space. Based on the @type of mapping, the PTE will be
704 * set to either WriteBack or WriteCombine (via pgprot_t).
706 * The caller is responsible for calling i915_gem_object_unpin_map() when the
707 * mapping is no longer required.
709 * Returns the pointer through which to access the mapped object, or an
710 * ERR_PTR() on error.
712 void *__must_check i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
713 enum i915_map_type type);
715 void *__must_check i915_gem_object_pin_map_unlocked(struct drm_i915_gem_object *obj,
716 enum i915_map_type type);
718 void __i915_gem_object_flush_map(struct drm_i915_gem_object *obj,
719 unsigned long offset,
721 static inline void i915_gem_object_flush_map(struct drm_i915_gem_object *obj)
723 __i915_gem_object_flush_map(obj, 0, obj->base.size);
727 * i915_gem_object_unpin_map - releases an earlier mapping
728 * @obj: the object to unmap
730 * After pinning the object and mapping its pages, once you are finished
731 * with your access, call i915_gem_object_unpin_map() to release the pin
732 * upon the mapping. Once the pin count reaches zero, that mapping may be
735 static inline void i915_gem_object_unpin_map(struct drm_i915_gem_object *obj)
737 i915_gem_object_unpin_pages(obj);
740 void __i915_gem_object_release_map(struct drm_i915_gem_object *obj);
742 int i915_gem_object_prepare_read(struct drm_i915_gem_object *obj,
743 unsigned int *needs_clflush);
744 int i915_gem_object_prepare_write(struct drm_i915_gem_object *obj,
745 unsigned int *needs_clflush);
746 #define CLFLUSH_BEFORE BIT(0)
747 #define CLFLUSH_AFTER BIT(1)
748 #define CLFLUSH_FLAGS (CLFLUSH_BEFORE | CLFLUSH_AFTER)
751 i915_gem_object_finish_access(struct drm_i915_gem_object *obj)
753 i915_gem_object_unpin_pages(obj);
756 int i915_gem_object_get_moving_fence(struct drm_i915_gem_object *obj,
757 struct dma_fence **fence);
758 int i915_gem_object_wait_moving_fence(struct drm_i915_gem_object *obj,
760 bool i915_gem_object_has_unknown_state(struct drm_i915_gem_object *obj);
762 void i915_gem_object_set_cache_coherency(struct drm_i915_gem_object *obj,
763 unsigned int cache_level);
764 void i915_gem_object_set_pat_index(struct drm_i915_gem_object *obj,
765 unsigned int pat_index);
766 bool i915_gem_object_can_bypass_llc(struct drm_i915_gem_object *obj);
767 void i915_gem_object_flush_if_display(struct drm_i915_gem_object *obj);
768 void i915_gem_object_flush_if_display_locked(struct drm_i915_gem_object *obj);
769 bool i915_gem_cpu_write_needs_clflush(struct drm_i915_gem_object *obj);
772 i915_gem_object_set_to_wc_domain(struct drm_i915_gem_object *obj, bool write);
774 i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write);
776 i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
777 struct i915_vma * __must_check
778 i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
779 struct i915_gem_ww_ctx *ww,
781 const struct i915_gtt_view *view,
784 void i915_gem_object_make_unshrinkable(struct drm_i915_gem_object *obj);
785 void i915_gem_object_make_shrinkable(struct drm_i915_gem_object *obj);
786 void __i915_gem_object_make_shrinkable(struct drm_i915_gem_object *obj);
787 void __i915_gem_object_make_purgeable(struct drm_i915_gem_object *obj);
788 void i915_gem_object_make_purgeable(struct drm_i915_gem_object *obj);
790 static inline void __start_cpu_write(struct drm_i915_gem_object *obj)
792 obj->read_domains = I915_GEM_DOMAIN_CPU;
793 obj->write_domain = I915_GEM_DOMAIN_CPU;
794 if (i915_gem_cpu_write_needs_clflush(obj))
795 obj->cache_dirty = true;
798 void i915_gem_fence_wait_priority(struct dma_fence *fence,
799 const struct i915_sched_attr *attr);
801 int i915_gem_object_wait(struct drm_i915_gem_object *obj,
804 int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
806 const struct i915_sched_attr *attr);
808 int i915_gem_object_read_from_page(struct drm_i915_gem_object *obj, u64 offset, void *dst, int size);
810 bool i915_gem_object_is_shmem(const struct drm_i915_gem_object *obj);
812 void __i915_gem_free_object_rcu(struct rcu_head *head);
814 void __i915_gem_object_pages_fini(struct drm_i915_gem_object *obj);
816 void __i915_gem_free_object(struct drm_i915_gem_object *obj);
818 bool i915_gem_object_evictable(struct drm_i915_gem_object *obj);
820 bool i915_gem_object_migratable(struct drm_i915_gem_object *obj);
822 int i915_gem_object_migrate(struct drm_i915_gem_object *obj,
823 struct i915_gem_ww_ctx *ww,
824 enum intel_region_id id);
825 int __i915_gem_object_migrate(struct drm_i915_gem_object *obj,
826 struct i915_gem_ww_ctx *ww,
827 enum intel_region_id id,
830 bool i915_gem_object_can_migrate(struct drm_i915_gem_object *obj,
831 enum intel_region_id id);
833 int i915_gem_object_wait_migration(struct drm_i915_gem_object *obj,
836 bool i915_gem_object_placement_possible(struct drm_i915_gem_object *obj,
837 enum intel_memory_type type);
839 bool i915_gem_object_needs_ccs_pages(struct drm_i915_gem_object *obj);
841 int shmem_sg_alloc_table(struct drm_i915_private *i915, struct sg_table *st,
842 size_t size, struct intel_memory_region *mr,
843 struct address_space *mapping,
844 unsigned int max_segment);
845 void shmem_sg_free_table(struct sg_table *st, struct address_space *mapping,
846 bool dirty, bool backup);
847 void __shmem_writeback(size_t size, struct address_space *mapping);
849 #ifdef CONFIG_MMU_NOTIFIER
851 i915_gem_object_is_userptr(struct drm_i915_gem_object *obj)
853 return obj->userptr.notifier.mm;
856 int i915_gem_object_userptr_submit_init(struct drm_i915_gem_object *obj);
857 int i915_gem_object_userptr_submit_done(struct drm_i915_gem_object *obj);
858 int i915_gem_object_userptr_validate(struct drm_i915_gem_object *obj);
860 static inline bool i915_gem_object_is_userptr(struct drm_i915_gem_object *obj) { return false; }
862 static inline int i915_gem_object_userptr_submit_init(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }
863 static inline int i915_gem_object_userptr_submit_done(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }
864 static inline int i915_gem_object_userptr_validate(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }