1 /*
2 * SPDX-License-Identifier: MIT
3 *
4 * Copyright © 2016 Intel Corporation
5 */
6
7 #ifndef __I915_GEM_OBJECT_H__
8 #define __I915_GEM_OBJECT_H__
9
10 #include <drm/drm_gem.h>
11 #include <drm/drm_file.h>
12 #include <drm/drm_device.h>
13
14 #include "display/intel_frontbuffer.h"
15 #include "intel_memory_region.h"
16 #include "i915_gem_object_types.h"
17 #include "i915_gem_gtt.h"
18 #include "i915_gem_ww.h"
19 #include "i915_vma_types.h"
20
21 enum intel_region_id;
22
23 /*
24 * XXX: There is a prevalence of the assumption that we fit the
25 * object's page count inside a 32bit _signed_ variable. Let's document
26 * this and catch if we ever need to fix it. In the meantime, if you do
27 * spot such a local variable, please consider fixing!
28 *
29 * Aside from our own locals (for which we have no excuse!):
30 * - sg_table embeds unsigned int for num_pages
31 * - get_user_pages*() mixed ints with longs
32 */
33 #define GEM_CHECK_SIZE_OVERFLOW(sz) \
34 GEM_WARN_ON((sz) >> PAGE_SHIFT > INT_MAX)
35
i915_gem_object_size_2big(u64 size)36 static inline bool i915_gem_object_size_2big(u64 size)
37 {
38 struct drm_i915_gem_object *obj;
39
40 if (GEM_CHECK_SIZE_OVERFLOW(size))
41 return true;
42
43 if (overflows_type(size, obj->base.size))
44 return true;
45
46 return false;
47 }
48
49 void i915_gem_init__objects(struct drm_i915_private *i915);
50
51 void i915_objects_module_exit(void);
52 int i915_objects_module_init(void);
53
54 struct drm_i915_gem_object *i915_gem_object_alloc(void);
55 void i915_gem_object_free(struct drm_i915_gem_object *obj);
56
57 void i915_gem_object_init(struct drm_i915_gem_object *obj,
58 const struct drm_i915_gem_object_ops *ops,
59 struct lock_class_key *key,
60 unsigned alloc_flags);
61
62 void __i915_gem_object_fini(struct drm_i915_gem_object *obj);
63
64 struct drm_i915_gem_object *
65 i915_gem_object_create_shmem(struct drm_i915_private *i915,
66 resource_size_t size);
67 struct drm_i915_gem_object *
68 i915_gem_object_create_shmem_from_data(struct drm_i915_private *i915,
69 const void *data, resource_size_t size);
70 struct drm_i915_gem_object *
71 __i915_gem_object_create_user(struct drm_i915_private *i915, u64 size,
72 struct intel_memory_region **placements,
73 unsigned int n_placements);
74
75 extern const struct drm_i915_gem_object_ops i915_gem_shmem_ops;
76
77 void __i915_gem_object_release_shmem(struct drm_i915_gem_object *obj,
78 struct sg_table *pages,
79 bool needs_clflush);
80
81 int i915_gem_object_pwrite_phys(struct drm_i915_gem_object *obj,
82 const struct drm_i915_gem_pwrite *args);
83 int i915_gem_object_pread_phys(struct drm_i915_gem_object *obj,
84 const struct drm_i915_gem_pread *args);
85
86 int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, int align);
87 void i915_gem_object_put_pages_shmem(struct drm_i915_gem_object *obj,
88 struct sg_table *pages);
89 void i915_gem_object_put_pages_phys(struct drm_i915_gem_object *obj,
90 struct sg_table *pages);
91
92 void i915_gem_flush_free_objects(struct drm_i915_private *i915);
93
94 struct sg_table *
95 __i915_gem_object_unset_pages(struct drm_i915_gem_object *obj);
96
97 /**
98 * i915_gem_object_lookup_rcu - look up a temporary GEM object from its handle
99 * @filp: DRM file private date
100 * @handle: userspace handle
101 *
102 * Returns:
103 *
104 * A pointer to the object named by the handle if such exists on @filp, NULL
105 * otherwise. This object is only valid whilst under the RCU read lock, and
106 * note carefully the object may be in the process of being destroyed.
107 */
108 static inline struct drm_i915_gem_object *
i915_gem_object_lookup_rcu(struct drm_file * file,u32 handle)109 i915_gem_object_lookup_rcu(struct drm_file *file, u32 handle)
110 {
111 #ifdef CONFIG_LOCKDEP
112 WARN_ON(debug_locks && !lock_is_held(&rcu_lock_map));
113 #endif
114 return idr_find(&file->object_idr, handle);
115 }
116
117 static inline struct drm_i915_gem_object *
i915_gem_object_get_rcu(struct drm_i915_gem_object * obj)118 i915_gem_object_get_rcu(struct drm_i915_gem_object *obj)
119 {
120 if (obj && !kref_get_unless_zero(&obj->base.refcount))
121 obj = NULL;
122
123 return obj;
124 }
125
126 static inline struct drm_i915_gem_object *
i915_gem_object_lookup(struct drm_file * file,u32 handle)127 i915_gem_object_lookup(struct drm_file *file, u32 handle)
128 {
129 struct drm_i915_gem_object *obj;
130
131 rcu_read_lock();
132 obj = i915_gem_object_lookup_rcu(file, handle);
133 obj = i915_gem_object_get_rcu(obj);
134 rcu_read_unlock();
135
136 return obj;
137 }
138
139 __deprecated
140 struct drm_gem_object *
141 drm_gem_object_lookup(struct drm_file *file, u32 handle);
142
143 __attribute__((nonnull))
144 static inline struct drm_i915_gem_object *
i915_gem_object_get(struct drm_i915_gem_object * obj)145 i915_gem_object_get(struct drm_i915_gem_object *obj)
146 {
147 drm_gem_object_get(&obj->base);
148 return obj;
149 }
150
151 __attribute__((nonnull))
152 static inline void
i915_gem_object_put(struct drm_i915_gem_object * obj)153 i915_gem_object_put(struct drm_i915_gem_object *obj)
154 {
155 __drm_gem_object_put(&obj->base);
156 }
157
158 #define assert_object_held(obj) dma_resv_assert_held((obj)->base.resv)
159
160 /*
161 * If more than one potential simultaneous locker, assert held.
162 */
assert_object_held_shared(const struct drm_i915_gem_object * obj)163 static inline void assert_object_held_shared(const struct drm_i915_gem_object *obj)
164 {
165 /*
166 * Note mm list lookup is protected by
167 * kref_get_unless_zero().
168 */
169 if (IS_ENABLED(CONFIG_LOCKDEP) &&
170 kref_read(&obj->base.refcount) > 0)
171 assert_object_held(obj);
172 }
173
__i915_gem_object_lock(struct drm_i915_gem_object * obj,struct i915_gem_ww_ctx * ww,bool intr)174 static inline int __i915_gem_object_lock(struct drm_i915_gem_object *obj,
175 struct i915_gem_ww_ctx *ww,
176 bool intr)
177 {
178 int ret;
179
180 if (intr)
181 ret = dma_resv_lock_interruptible(obj->base.resv, ww ? &ww->ctx : NULL);
182 else
183 ret = dma_resv_lock(obj->base.resv, ww ? &ww->ctx : NULL);
184
185 if (!ret && ww) {
186 i915_gem_object_get(obj);
187 list_add_tail(&obj->obj_link, &ww->obj_list);
188 }
189 if (ret == -EALREADY)
190 ret = 0;
191
192 if (ret == -EDEADLK) {
193 i915_gem_object_get(obj);
194 ww->contended = obj;
195 }
196
197 return ret;
198 }
199
i915_gem_object_lock(struct drm_i915_gem_object * obj,struct i915_gem_ww_ctx * ww)200 static inline int i915_gem_object_lock(struct drm_i915_gem_object *obj,
201 struct i915_gem_ww_ctx *ww)
202 {
203 return __i915_gem_object_lock(obj, ww, ww && ww->intr);
204 }
205
i915_gem_object_lock_interruptible(struct drm_i915_gem_object * obj,struct i915_gem_ww_ctx * ww)206 static inline int i915_gem_object_lock_interruptible(struct drm_i915_gem_object *obj,
207 struct i915_gem_ww_ctx *ww)
208 {
209 WARN_ON(ww && !ww->intr);
210 return __i915_gem_object_lock(obj, ww, true);
211 }
212
i915_gem_object_trylock(struct drm_i915_gem_object * obj,struct i915_gem_ww_ctx * ww)213 static inline bool i915_gem_object_trylock(struct drm_i915_gem_object *obj,
214 struct i915_gem_ww_ctx *ww)
215 {
216 if (!ww)
217 return dma_resv_trylock(obj->base.resv);
218 else
219 return ww_mutex_trylock(&obj->base.resv->lock, &ww->ctx);
220 }
221
i915_gem_object_unlock(struct drm_i915_gem_object * obj)222 static inline void i915_gem_object_unlock(struct drm_i915_gem_object *obj)
223 {
224 if (obj->ops->adjust_lru)
225 obj->ops->adjust_lru(obj);
226
227 dma_resv_unlock(obj->base.resv);
228 }
229
230 static inline void
i915_gem_object_set_readonly(struct drm_i915_gem_object * obj)231 i915_gem_object_set_readonly(struct drm_i915_gem_object *obj)
232 {
233 obj->flags |= I915_BO_READONLY;
234 }
235
236 static inline bool
i915_gem_object_is_readonly(const struct drm_i915_gem_object * obj)237 i915_gem_object_is_readonly(const struct drm_i915_gem_object *obj)
238 {
239 return obj->flags & I915_BO_READONLY;
240 }
241
242 static inline bool
i915_gem_object_is_contiguous(const struct drm_i915_gem_object * obj)243 i915_gem_object_is_contiguous(const struct drm_i915_gem_object *obj)
244 {
245 return obj->flags & I915_BO_ALLOC_CONTIGUOUS;
246 }
247
248 static inline bool
i915_gem_object_is_volatile(const struct drm_i915_gem_object * obj)249 i915_gem_object_is_volatile(const struct drm_i915_gem_object *obj)
250 {
251 return obj->flags & I915_BO_ALLOC_VOLATILE;
252 }
253
254 static inline void
i915_gem_object_set_volatile(struct drm_i915_gem_object * obj)255 i915_gem_object_set_volatile(struct drm_i915_gem_object *obj)
256 {
257 obj->flags |= I915_BO_ALLOC_VOLATILE;
258 }
259
260 static inline bool
i915_gem_object_has_tiling_quirk(struct drm_i915_gem_object * obj)261 i915_gem_object_has_tiling_quirk(struct drm_i915_gem_object *obj)
262 {
263 return test_bit(I915_TILING_QUIRK_BIT, &obj->flags);
264 }
265
266 static inline void
i915_gem_object_set_tiling_quirk(struct drm_i915_gem_object * obj)267 i915_gem_object_set_tiling_quirk(struct drm_i915_gem_object *obj)
268 {
269 set_bit(I915_TILING_QUIRK_BIT, &obj->flags);
270 }
271
272 static inline void
i915_gem_object_clear_tiling_quirk(struct drm_i915_gem_object * obj)273 i915_gem_object_clear_tiling_quirk(struct drm_i915_gem_object *obj)
274 {
275 clear_bit(I915_TILING_QUIRK_BIT, &obj->flags);
276 }
277
278 static inline bool
i915_gem_object_is_protected(const struct drm_i915_gem_object * obj)279 i915_gem_object_is_protected(const struct drm_i915_gem_object *obj)
280 {
281 return obj->flags & I915_BO_PROTECTED;
282 }
283
284 static inline bool
i915_gem_object_type_has(const struct drm_i915_gem_object * obj,unsigned long flags)285 i915_gem_object_type_has(const struct drm_i915_gem_object *obj,
286 unsigned long flags)
287 {
288 return obj->ops->flags & flags;
289 }
290
291 bool i915_gem_object_has_struct_page(const struct drm_i915_gem_object *obj);
292
293 bool i915_gem_object_has_iomem(const struct drm_i915_gem_object *obj);
294
295 static inline bool
i915_gem_object_is_shrinkable(const struct drm_i915_gem_object * obj)296 i915_gem_object_is_shrinkable(const struct drm_i915_gem_object *obj)
297 {
298 return i915_gem_object_type_has(obj, I915_GEM_OBJECT_IS_SHRINKABLE);
299 }
300
301 static inline bool
i915_gem_object_has_self_managed_shrink_list(const struct drm_i915_gem_object * obj)302 i915_gem_object_has_self_managed_shrink_list(const struct drm_i915_gem_object *obj)
303 {
304 return i915_gem_object_type_has(obj, I915_GEM_OBJECT_SELF_MANAGED_SHRINK_LIST);
305 }
306
307 static inline bool
i915_gem_object_is_proxy(const struct drm_i915_gem_object * obj)308 i915_gem_object_is_proxy(const struct drm_i915_gem_object *obj)
309 {
310 return i915_gem_object_type_has(obj, I915_GEM_OBJECT_IS_PROXY);
311 }
312
313 static inline bool
i915_gem_object_never_mmap(const struct drm_i915_gem_object * obj)314 i915_gem_object_never_mmap(const struct drm_i915_gem_object *obj)
315 {
316 return i915_gem_object_type_has(obj, I915_GEM_OBJECT_NO_MMAP);
317 }
318
319 static inline bool
i915_gem_object_is_framebuffer(const struct drm_i915_gem_object * obj)320 i915_gem_object_is_framebuffer(const struct drm_i915_gem_object *obj)
321 {
322 return READ_ONCE(obj->frontbuffer);
323 }
324
325 static inline unsigned int
i915_gem_object_get_tiling(const struct drm_i915_gem_object * obj)326 i915_gem_object_get_tiling(const struct drm_i915_gem_object *obj)
327 {
328 return obj->tiling_and_stride & TILING_MASK;
329 }
330
331 static inline bool
i915_gem_object_is_tiled(const struct drm_i915_gem_object * obj)332 i915_gem_object_is_tiled(const struct drm_i915_gem_object *obj)
333 {
334 return i915_gem_object_get_tiling(obj) != I915_TILING_NONE;
335 }
336
337 static inline unsigned int
i915_gem_object_get_stride(const struct drm_i915_gem_object * obj)338 i915_gem_object_get_stride(const struct drm_i915_gem_object *obj)
339 {
340 return obj->tiling_and_stride & STRIDE_MASK;
341 }
342
343 static inline unsigned int
i915_gem_tile_height(unsigned int tiling)344 i915_gem_tile_height(unsigned int tiling)
345 {
346 GEM_BUG_ON(!tiling);
347 return tiling == I915_TILING_Y ? 32 : 8;
348 }
349
350 static inline unsigned int
i915_gem_object_get_tile_height(const struct drm_i915_gem_object * obj)351 i915_gem_object_get_tile_height(const struct drm_i915_gem_object *obj)
352 {
353 return i915_gem_tile_height(i915_gem_object_get_tiling(obj));
354 }
355
356 static inline unsigned int
i915_gem_object_get_tile_row_size(const struct drm_i915_gem_object * obj)357 i915_gem_object_get_tile_row_size(const struct drm_i915_gem_object *obj)
358 {
359 return (i915_gem_object_get_stride(obj) *
360 i915_gem_object_get_tile_height(obj));
361 }
362
363 int i915_gem_object_set_tiling(struct drm_i915_gem_object *obj,
364 unsigned int tiling, unsigned int stride);
365
366 struct scatterlist *
367 __i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
368 struct i915_gem_object_page_iter *iter,
369 unsigned int n,
370 unsigned int *offset, bool dma);
371
372 static inline struct scatterlist *
i915_gem_object_get_sg(struct drm_i915_gem_object * obj,unsigned int n,unsigned int * offset)373 i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
374 unsigned int n,
375 unsigned int *offset)
376 {
377 return __i915_gem_object_get_sg(obj, &obj->mm.get_page, n, offset, false);
378 }
379
380 static inline struct scatterlist *
i915_gem_object_get_sg_dma(struct drm_i915_gem_object * obj,unsigned int n,unsigned int * offset)381 i915_gem_object_get_sg_dma(struct drm_i915_gem_object *obj,
382 unsigned int n,
383 unsigned int *offset)
384 {
385 return __i915_gem_object_get_sg(obj, &obj->mm.get_dma_page, n, offset, true);
386 }
387
388 struct page *
389 i915_gem_object_get_page(struct drm_i915_gem_object *obj,
390 unsigned int n);
391
392 struct page *
393 i915_gem_object_get_dirty_page(struct drm_i915_gem_object *obj,
394 unsigned int n);
395
396 dma_addr_t
397 i915_gem_object_get_dma_address_len(struct drm_i915_gem_object *obj,
398 unsigned long n,
399 unsigned int *len);
400
401 dma_addr_t
402 i915_gem_object_get_dma_address(struct drm_i915_gem_object *obj,
403 unsigned long n);
404
405 void __i915_gem_object_set_pages(struct drm_i915_gem_object *obj,
406 struct sg_table *pages,
407 unsigned int sg_page_sizes);
408
409 int ____i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
410 int __i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
411
412 static inline int __must_check
i915_gem_object_pin_pages(struct drm_i915_gem_object * obj)413 i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
414 {
415 assert_object_held(obj);
416
417 if (atomic_inc_not_zero(&obj->mm.pages_pin_count))
418 return 0;
419
420 return __i915_gem_object_get_pages(obj);
421 }
422
423 int i915_gem_object_pin_pages_unlocked(struct drm_i915_gem_object *obj);
424
425 static inline bool
i915_gem_object_has_pages(struct drm_i915_gem_object * obj)426 i915_gem_object_has_pages(struct drm_i915_gem_object *obj)
427 {
428 return !IS_ERR_OR_NULL(READ_ONCE(obj->mm.pages));
429 }
430
431 static inline void
__i915_gem_object_pin_pages(struct drm_i915_gem_object * obj)432 __i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
433 {
434 GEM_BUG_ON(!i915_gem_object_has_pages(obj));
435
436 atomic_inc(&obj->mm.pages_pin_count);
437 }
438
439 static inline bool
i915_gem_object_has_pinned_pages(struct drm_i915_gem_object * obj)440 i915_gem_object_has_pinned_pages(struct drm_i915_gem_object *obj)
441 {
442 return atomic_read(&obj->mm.pages_pin_count);
443 }
444
445 static inline void
__i915_gem_object_unpin_pages(struct drm_i915_gem_object * obj)446 __i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
447 {
448 GEM_BUG_ON(!i915_gem_object_has_pages(obj));
449 GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj));
450
451 atomic_dec(&obj->mm.pages_pin_count);
452 }
453
454 static inline void
i915_gem_object_unpin_pages(struct drm_i915_gem_object * obj)455 i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
456 {
457 __i915_gem_object_unpin_pages(obj);
458 }
459
460 int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj);
461 int i915_gem_object_truncate(struct drm_i915_gem_object *obj);
462
463 /**
464 * i915_gem_object_pin_map - return a contiguous mapping of the entire object
465 * @obj: the object to map into kernel address space
466 * @type: the type of mapping, used to select pgprot_t
467 *
468 * Calls i915_gem_object_pin_pages() to prevent reaping of the object's
469 * pages and then returns a contiguous mapping of the backing storage into
470 * the kernel address space. Based on the @type of mapping, the PTE will be
471 * set to either WriteBack or WriteCombine (via pgprot_t).
472 *
473 * The caller is responsible for calling i915_gem_object_unpin_map() when the
474 * mapping is no longer required.
475 *
476 * Returns the pointer through which to access the mapped object, or an
477 * ERR_PTR() on error.
478 */
479 void *__must_check i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
480 enum i915_map_type type);
481
482 void *__must_check i915_gem_object_pin_map_unlocked(struct drm_i915_gem_object *obj,
483 enum i915_map_type type);
484
485 void __i915_gem_object_flush_map(struct drm_i915_gem_object *obj,
486 unsigned long offset,
487 unsigned long size);
i915_gem_object_flush_map(struct drm_i915_gem_object * obj)488 static inline void i915_gem_object_flush_map(struct drm_i915_gem_object *obj)
489 {
490 __i915_gem_object_flush_map(obj, 0, obj->base.size);
491 }
492
493 /**
494 * i915_gem_object_unpin_map - releases an earlier mapping
495 * @obj: the object to unmap
496 *
497 * After pinning the object and mapping its pages, once you are finished
498 * with your access, call i915_gem_object_unpin_map() to release the pin
499 * upon the mapping. Once the pin count reaches zero, that mapping may be
500 * removed.
501 */
i915_gem_object_unpin_map(struct drm_i915_gem_object * obj)502 static inline void i915_gem_object_unpin_map(struct drm_i915_gem_object *obj)
503 {
504 i915_gem_object_unpin_pages(obj);
505 }
506
507 void __i915_gem_object_release_map(struct drm_i915_gem_object *obj);
508
509 int i915_gem_object_prepare_read(struct drm_i915_gem_object *obj,
510 unsigned int *needs_clflush);
511 int i915_gem_object_prepare_write(struct drm_i915_gem_object *obj,
512 unsigned int *needs_clflush);
513 #define CLFLUSH_BEFORE BIT(0)
514 #define CLFLUSH_AFTER BIT(1)
515 #define CLFLUSH_FLAGS (CLFLUSH_BEFORE | CLFLUSH_AFTER)
516
517 static inline void
i915_gem_object_finish_access(struct drm_i915_gem_object * obj)518 i915_gem_object_finish_access(struct drm_i915_gem_object *obj)
519 {
520 i915_gem_object_unpin_pages(obj);
521 }
522
523 int i915_gem_object_get_moving_fence(struct drm_i915_gem_object *obj,
524 struct dma_fence **fence);
525 int i915_gem_object_wait_moving_fence(struct drm_i915_gem_object *obj,
526 bool intr);
527
528 void i915_gem_object_set_cache_coherency(struct drm_i915_gem_object *obj,
529 unsigned int cache_level);
530 bool i915_gem_object_can_bypass_llc(struct drm_i915_gem_object *obj);
531 void i915_gem_object_flush_if_display(struct drm_i915_gem_object *obj);
532 void i915_gem_object_flush_if_display_locked(struct drm_i915_gem_object *obj);
533 bool i915_gem_cpu_write_needs_clflush(struct drm_i915_gem_object *obj);
534
535 int __must_check
536 i915_gem_object_set_to_wc_domain(struct drm_i915_gem_object *obj, bool write);
537 int __must_check
538 i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write);
539 int __must_check
540 i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
541 struct i915_vma * __must_check
542 i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
543 struct i915_gem_ww_ctx *ww,
544 u32 alignment,
545 const struct i915_ggtt_view *view,
546 unsigned int flags);
547
548 void i915_gem_object_make_unshrinkable(struct drm_i915_gem_object *obj);
549 void i915_gem_object_make_shrinkable(struct drm_i915_gem_object *obj);
550 void __i915_gem_object_make_shrinkable(struct drm_i915_gem_object *obj);
551 void __i915_gem_object_make_purgeable(struct drm_i915_gem_object *obj);
552 void i915_gem_object_make_purgeable(struct drm_i915_gem_object *obj);
553
__start_cpu_write(struct drm_i915_gem_object * obj)554 static inline void __start_cpu_write(struct drm_i915_gem_object *obj)
555 {
556 obj->read_domains = I915_GEM_DOMAIN_CPU;
557 obj->write_domain = I915_GEM_DOMAIN_CPU;
558 if (i915_gem_cpu_write_needs_clflush(obj))
559 obj->cache_dirty = true;
560 }
561
562 void i915_gem_fence_wait_priority(struct dma_fence *fence,
563 const struct i915_sched_attr *attr);
564
565 int i915_gem_object_wait(struct drm_i915_gem_object *obj,
566 unsigned int flags,
567 long timeout);
568 int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
569 unsigned int flags,
570 const struct i915_sched_attr *attr);
571
572 void __i915_gem_object_flush_frontbuffer(struct drm_i915_gem_object *obj,
573 enum fb_op_origin origin);
574 void __i915_gem_object_invalidate_frontbuffer(struct drm_i915_gem_object *obj,
575 enum fb_op_origin origin);
576
577 static inline void
i915_gem_object_flush_frontbuffer(struct drm_i915_gem_object * obj,enum fb_op_origin origin)578 i915_gem_object_flush_frontbuffer(struct drm_i915_gem_object *obj,
579 enum fb_op_origin origin)
580 {
581 if (unlikely(rcu_access_pointer(obj->frontbuffer)))
582 __i915_gem_object_flush_frontbuffer(obj, origin);
583 }
584
585 static inline void
i915_gem_object_invalidate_frontbuffer(struct drm_i915_gem_object * obj,enum fb_op_origin origin)586 i915_gem_object_invalidate_frontbuffer(struct drm_i915_gem_object *obj,
587 enum fb_op_origin origin)
588 {
589 if (unlikely(rcu_access_pointer(obj->frontbuffer)))
590 __i915_gem_object_invalidate_frontbuffer(obj, origin);
591 }
592
593 int i915_gem_object_read_from_page(struct drm_i915_gem_object *obj, u64 offset, void *dst, int size);
594
595 bool i915_gem_object_is_shmem(const struct drm_i915_gem_object *obj);
596
597 void __i915_gem_free_object_rcu(struct rcu_head *head);
598
599 void __i915_gem_object_pages_fini(struct drm_i915_gem_object *obj);
600
601 void __i915_gem_free_object(struct drm_i915_gem_object *obj);
602
603 bool i915_gem_object_evictable(struct drm_i915_gem_object *obj);
604
605 bool i915_gem_object_migratable(struct drm_i915_gem_object *obj);
606
607 int i915_gem_object_migrate(struct drm_i915_gem_object *obj,
608 struct i915_gem_ww_ctx *ww,
609 enum intel_region_id id);
610
611 bool i915_gem_object_can_migrate(struct drm_i915_gem_object *obj,
612 enum intel_region_id id);
613
614 int i915_gem_object_wait_migration(struct drm_i915_gem_object *obj,
615 unsigned int flags);
616
617 bool i915_gem_object_placement_possible(struct drm_i915_gem_object *obj,
618 enum intel_memory_type type);
619
620 int shmem_sg_alloc_table(struct drm_i915_private *i915, struct sg_table *st,
621 size_t size, struct intel_memory_region *mr,
622 struct address_space *mapping,
623 unsigned int max_segment);
624 void shmem_sg_free_table(struct sg_table *st, struct address_space *mapping,
625 bool dirty, bool backup);
626 void __shmem_writeback(size_t size, struct address_space *mapping);
627
628 #ifdef CONFIG_MMU_NOTIFIER
629 static inline bool
i915_gem_object_is_userptr(struct drm_i915_gem_object * obj)630 i915_gem_object_is_userptr(struct drm_i915_gem_object *obj)
631 {
632 return obj->userptr.notifier.mm;
633 }
634
635 int i915_gem_object_userptr_submit_init(struct drm_i915_gem_object *obj);
636 int i915_gem_object_userptr_submit_done(struct drm_i915_gem_object *obj);
637 int i915_gem_object_userptr_validate(struct drm_i915_gem_object *obj);
638 #else
i915_gem_object_is_userptr(struct drm_i915_gem_object * obj)639 static inline bool i915_gem_object_is_userptr(struct drm_i915_gem_object *obj) { return false; }
640
i915_gem_object_userptr_submit_init(struct drm_i915_gem_object * obj)641 static inline int i915_gem_object_userptr_submit_init(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }
i915_gem_object_userptr_submit_done(struct drm_i915_gem_object * obj)642 static inline int i915_gem_object_userptr_submit_done(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }
i915_gem_object_userptr_validate(struct drm_i915_gem_object * obj)643 static inline int i915_gem_object_userptr_validate(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }
644
645 #endif
646
647 #endif
648