2 * Copyright 2009 Jerome Glisse.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
16 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
17 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
19 * USE OR OTHER DEALINGS IN THE SOFTWARE.
21 * The above copyright notice and this permission notice (including the
22 * next paragraph) shall be included in all copies or substantial portions
28 * Jerome Glisse <glisse@freedesktop.org>
29 * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
32 #include <linux/list.h>
33 #include <linux/slab.h>
35 #include <drm/radeon_drm.h>
37 #include "radeon_trace.h"
40 int radeon_ttm_init(struct radeon_device
*rdev
);
41 void radeon_ttm_fini(struct radeon_device
*rdev
);
42 static void radeon_bo_clear_surface_reg(struct radeon_bo
*bo
);
45 * To exclude mutual BO access we rely on bo_reserve exclusion, as all
46 * function are calling it.
49 static void radeon_update_memory_usage(struct radeon_bo
*bo
,
50 unsigned mem_type
, int sign
)
52 struct radeon_device
*rdev
= bo
->rdev
;
53 u64 size
= (u64
)bo
->tbo
.num_pages
<< PAGE_SHIFT
;
58 atomic64_add(size
, &rdev
->gtt_usage
);
60 atomic64_sub(size
, &rdev
->gtt_usage
);
64 atomic64_add(size
, &rdev
->vram_usage
);
66 atomic64_sub(size
, &rdev
->vram_usage
);
71 static void radeon_ttm_bo_destroy(struct ttm_buffer_object
*tbo
)
75 bo
= container_of(tbo
, struct radeon_bo
, tbo
);
77 radeon_update_memory_usage(bo
, bo
->tbo
.mem
.mem_type
, -1);
79 mutex_lock(&bo
->rdev
->gem
.mutex
);
80 list_del_init(&bo
->list
);
81 mutex_unlock(&bo
->rdev
->gem
.mutex
);
82 radeon_bo_clear_surface_reg(bo
);
83 WARN_ON(!list_empty(&bo
->va
));
84 drm_gem_object_release(&bo
->gem_base
);
88 bool radeon_ttm_bo_is_radeon_bo(struct ttm_buffer_object
*bo
)
90 if (bo
->destroy
== &radeon_ttm_bo_destroy
)
95 void radeon_ttm_placement_from_domain(struct radeon_bo
*rbo
, u32 domain
)
99 rbo
->placement
.fpfn
= 0;
100 rbo
->placement
.lpfn
= 0;
101 rbo
->placement
.placement
= rbo
->placements
;
102 rbo
->placement
.busy_placement
= rbo
->placements
;
103 if (domain
& RADEON_GEM_DOMAIN_VRAM
)
104 rbo
->placements
[c
++] = TTM_PL_FLAG_WC
| TTM_PL_FLAG_UNCACHED
|
106 if (domain
& RADEON_GEM_DOMAIN_GTT
) {
107 if (rbo
->flags
& RADEON_GEM_GTT_UC
) {
108 rbo
->placements
[c
++] = TTM_PL_FLAG_UNCACHED
| TTM_PL_FLAG_TT
;
109 } else if ((rbo
->flags
& RADEON_GEM_GTT_WC
) ||
110 (rbo
->rdev
->flags
& RADEON_IS_AGP
)) {
111 rbo
->placements
[c
++] = TTM_PL_FLAG_WC
| TTM_PL_FLAG_UNCACHED
|
114 rbo
->placements
[c
++] = TTM_PL_FLAG_CACHED
| TTM_PL_FLAG_TT
;
117 if (domain
& RADEON_GEM_DOMAIN_CPU
) {
118 if (rbo
->flags
& RADEON_GEM_GTT_UC
) {
119 rbo
->placements
[c
++] = TTM_PL_FLAG_UNCACHED
| TTM_PL_FLAG_SYSTEM
;
120 } else if ((rbo
->flags
& RADEON_GEM_GTT_WC
) ||
121 rbo
->rdev
->flags
& RADEON_IS_AGP
) {
122 rbo
->placements
[c
++] = TTM_PL_FLAG_WC
| TTM_PL_FLAG_UNCACHED
|
125 rbo
->placements
[c
++] = TTM_PL_FLAG_CACHED
| TTM_PL_FLAG_SYSTEM
;
129 rbo
->placements
[c
++] = TTM_PL_MASK_CACHING
| TTM_PL_FLAG_SYSTEM
;
130 rbo
->placement
.num_placement
= c
;
131 rbo
->placement
.num_busy_placement
= c
;
134 * Use two-ended allocation depending on the buffer size to
135 * improve fragmentation quality.
136 * 512kb was measured as the most optimal number.
138 if (rbo
->tbo
.mem
.size
> 512 * 1024) {
139 for (i
= 0; i
< c
; i
++) {
140 rbo
->placements
[i
] |= TTM_PL_FLAG_TOPDOWN
;
145 int radeon_bo_create(struct radeon_device
*rdev
,
146 unsigned long size
, int byte_align
, bool kernel
, u32 domain
,
147 u32 flags
, struct sg_table
*sg
, struct radeon_bo
**bo_ptr
)
149 struct radeon_bo
*bo
;
150 enum ttm_bo_type type
;
151 unsigned long page_align
= roundup(byte_align
, PAGE_SIZE
) >> PAGE_SHIFT
;
155 size
= ALIGN(size
, PAGE_SIZE
);
158 type
= ttm_bo_type_kernel
;
160 type
= ttm_bo_type_sg
;
162 type
= ttm_bo_type_device
;
166 acc_size
= ttm_bo_dma_acc_size(&rdev
->mman
.bdev
, size
,
167 sizeof(struct radeon_bo
));
169 bo
= kzalloc(sizeof(struct radeon_bo
), GFP_KERNEL
);
172 r
= drm_gem_object_init(rdev
->ddev
, &bo
->gem_base
, size
);
178 bo
->surface_reg
= -1;
179 INIT_LIST_HEAD(&bo
->list
);
180 INIT_LIST_HEAD(&bo
->va
);
181 bo
->initial_domain
= domain
& (RADEON_GEM_DOMAIN_VRAM
|
182 RADEON_GEM_DOMAIN_GTT
|
183 RADEON_GEM_DOMAIN_CPU
);
186 /* PCI GART is always snooped */
187 if (!(rdev
->flags
& RADEON_IS_PCIE
))
188 bo
->flags
&= ~(RADEON_GEM_GTT_WC
| RADEON_GEM_GTT_UC
);
190 radeon_ttm_placement_from_domain(bo
, domain
);
191 /* Kernel allocation are uninterruptible */
192 down_read(&rdev
->pm
.mclk_lock
);
193 r
= ttm_bo_init(&rdev
->mman
.bdev
, &bo
->tbo
, size
, type
,
194 &bo
->placement
, page_align
, !kernel
, NULL
,
195 acc_size
, sg
, &radeon_ttm_bo_destroy
);
196 up_read(&rdev
->pm
.mclk_lock
);
197 if (unlikely(r
!= 0)) {
202 trace_radeon_bo_create(bo
);
207 int radeon_bo_kmap(struct radeon_bo
*bo
, void **ptr
)
218 r
= ttm_bo_kmap(&bo
->tbo
, 0, bo
->tbo
.num_pages
, &bo
->kmap
);
222 bo
->kptr
= ttm_kmap_obj_virtual(&bo
->kmap
, &is_iomem
);
226 radeon_bo_check_tiling(bo
, 0, 0);
230 void radeon_bo_kunmap(struct radeon_bo
*bo
)
232 if (bo
->kptr
== NULL
)
235 radeon_bo_check_tiling(bo
, 0, 0);
236 ttm_bo_kunmap(&bo
->kmap
);
239 struct radeon_bo
*radeon_bo_ref(struct radeon_bo
*bo
)
244 ttm_bo_reference(&bo
->tbo
);
248 void radeon_bo_unref(struct radeon_bo
**bo
)
250 struct ttm_buffer_object
*tbo
;
251 struct radeon_device
*rdev
;
262 int radeon_bo_pin_restricted(struct radeon_bo
*bo
, u32 domain
, u64 max_offset
,
267 if (radeon_ttm_tt_has_userptr(bo
->tbo
.ttm
))
273 *gpu_addr
= radeon_bo_gpu_offset(bo
);
275 if (max_offset
!= 0) {
278 if (domain
== RADEON_GEM_DOMAIN_VRAM
)
279 domain_start
= bo
->rdev
->mc
.vram_start
;
281 domain_start
= bo
->rdev
->mc
.gtt_start
;
282 WARN_ON_ONCE(max_offset
<
283 (radeon_bo_gpu_offset(bo
) - domain_start
));
288 radeon_ttm_placement_from_domain(bo
, domain
);
289 if (domain
== RADEON_GEM_DOMAIN_VRAM
) {
290 /* force to pin into visible video ram */
291 bo
->placement
.lpfn
= bo
->rdev
->mc
.visible_vram_size
>> PAGE_SHIFT
;
294 u64 lpfn
= max_offset
>> PAGE_SHIFT
;
296 if (!bo
->placement
.lpfn
)
297 bo
->placement
.lpfn
= bo
->rdev
->mc
.gtt_size
>> PAGE_SHIFT
;
299 if (lpfn
< bo
->placement
.lpfn
)
300 bo
->placement
.lpfn
= lpfn
;
302 for (i
= 0; i
< bo
->placement
.num_placement
; i
++)
303 bo
->placements
[i
] |= TTM_PL_FLAG_NO_EVICT
;
304 r
= ttm_bo_validate(&bo
->tbo
, &bo
->placement
, false, false);
305 if (likely(r
== 0)) {
307 if (gpu_addr
!= NULL
)
308 *gpu_addr
= radeon_bo_gpu_offset(bo
);
309 if (domain
== RADEON_GEM_DOMAIN_VRAM
)
310 bo
->rdev
->vram_pin_size
+= radeon_bo_size(bo
);
312 bo
->rdev
->gart_pin_size
+= radeon_bo_size(bo
);
314 dev_err(bo
->rdev
->dev
, "%p pin failed\n", bo
);
319 int radeon_bo_pin(struct radeon_bo
*bo
, u32 domain
, u64
*gpu_addr
)
321 return radeon_bo_pin_restricted(bo
, domain
, 0, gpu_addr
);
324 int radeon_bo_unpin(struct radeon_bo
*bo
)
328 if (!bo
->pin_count
) {
329 dev_warn(bo
->rdev
->dev
, "%p unpin not necessary\n", bo
);
335 for (i
= 0; i
< bo
->placement
.num_placement
; i
++)
336 bo
->placements
[i
] &= ~TTM_PL_FLAG_NO_EVICT
;
337 r
= ttm_bo_validate(&bo
->tbo
, &bo
->placement
, false, false);
338 if (likely(r
== 0)) {
339 if (bo
->tbo
.mem
.mem_type
== TTM_PL_VRAM
)
340 bo
->rdev
->vram_pin_size
-= radeon_bo_size(bo
);
342 bo
->rdev
->gart_pin_size
-= radeon_bo_size(bo
);
344 dev_err(bo
->rdev
->dev
, "%p validate failed for unpin\n", bo
);
349 int radeon_bo_evict_vram(struct radeon_device
*rdev
)
351 /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
352 if (0 && (rdev
->flags
& RADEON_IS_IGP
)) {
353 if (rdev
->mc
.igp_sideport_enabled
== false)
354 /* Useless to evict on IGP chips */
357 return ttm_bo_evict_mm(&rdev
->mman
.bdev
, TTM_PL_VRAM
);
360 void radeon_bo_force_delete(struct radeon_device
*rdev
)
362 struct radeon_bo
*bo
, *n
;
364 if (list_empty(&rdev
->gem
.objects
)) {
367 dev_err(rdev
->dev
, "Userspace still has active objects !\n");
368 list_for_each_entry_safe(bo
, n
, &rdev
->gem
.objects
, list
) {
369 mutex_lock(&rdev
->ddev
->struct_mutex
);
370 dev_err(rdev
->dev
, "%p %p %lu %lu force free\n",
371 &bo
->gem_base
, bo
, (unsigned long)bo
->gem_base
.size
,
372 *((unsigned long *)&bo
->gem_base
.refcount
));
373 mutex_lock(&bo
->rdev
->gem
.mutex
);
374 list_del_init(&bo
->list
);
375 mutex_unlock(&bo
->rdev
->gem
.mutex
);
376 /* this should unref the ttm bo */
377 drm_gem_object_unreference(&bo
->gem_base
);
378 mutex_unlock(&rdev
->ddev
->struct_mutex
);
382 int radeon_bo_init(struct radeon_device
*rdev
)
384 /* Add an MTRR for the VRAM */
385 if (!rdev
->fastfb_working
) {
386 rdev
->mc
.vram_mtrr
= arch_phys_wc_add(rdev
->mc
.aper_base
,
389 DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
390 rdev
->mc
.mc_vram_size
>> 20,
391 (unsigned long long)rdev
->mc
.aper_size
>> 20);
392 DRM_INFO("RAM width %dbits %cDR\n",
393 rdev
->mc
.vram_width
, rdev
->mc
.vram_is_ddr
? 'D' : 'S');
394 return radeon_ttm_init(rdev
);
397 void radeon_bo_fini(struct radeon_device
*rdev
)
399 radeon_ttm_fini(rdev
);
400 arch_phys_wc_del(rdev
->mc
.vram_mtrr
);
403 /* Returns how many bytes TTM can move per IB.
405 static u64
radeon_bo_get_threshold_for_moves(struct radeon_device
*rdev
)
407 u64 real_vram_size
= rdev
->mc
.real_vram_size
;
408 u64 vram_usage
= atomic64_read(&rdev
->vram_usage
);
410 /* This function is based on the current VRAM usage.
412 * - If all of VRAM is free, allow relocating the number of bytes that
413 * is equal to 1/4 of the size of VRAM for this IB.
415 * - If more than one half of VRAM is occupied, only allow relocating
416 * 1 MB of data for this IB.
418 * - From 0 to one half of used VRAM, the threshold decreases
433 * Note: It's a threshold, not a limit. The threshold must be crossed
434 * for buffer relocations to stop, so any buffer of an arbitrary size
435 * can be moved as long as the threshold isn't crossed before
436 * the relocation takes place. We don't want to disable buffer
437 * relocations completely.
439 * The idea is that buffers should be placed in VRAM at creation time
440 * and TTM should only do a minimum number of relocations during
441 * command submission. In practice, you need to submit at least
442 * a dozen IBs to move all buffers to VRAM if they are in GTT.
444 * Also, things can get pretty crazy under memory pressure and actual
445 * VRAM usage can change a lot, so playing safe even at 50% does
446 * consistently increase performance.
449 u64 half_vram
= real_vram_size
>> 1;
450 u64 half_free_vram
= vram_usage
>= half_vram
? 0 : half_vram
- vram_usage
;
451 u64 bytes_moved_threshold
= half_free_vram
>> 1;
452 return max(bytes_moved_threshold
, 1024*1024ull);
455 int radeon_bo_list_validate(struct radeon_device
*rdev
,
456 struct ww_acquire_ctx
*ticket
,
457 struct list_head
*head
, int ring
)
459 struct radeon_cs_reloc
*lobj
;
460 struct radeon_bo
*bo
;
462 u64 bytes_moved
= 0, initial_bytes_moved
;
463 u64 bytes_moved_threshold
= radeon_bo_get_threshold_for_moves(rdev
);
465 r
= ttm_eu_reserve_buffers(ticket
, head
);
466 if (unlikely(r
!= 0)) {
470 list_for_each_entry(lobj
, head
, tv
.head
) {
472 if (!bo
->pin_count
) {
473 u32 domain
= lobj
->prefered_domains
;
475 radeon_mem_type_to_domain(bo
->tbo
.mem
.mem_type
);
477 /* Check if this buffer will be moved and don't move it
478 * if we have moved too many buffers for this IB already.
480 * Note that this allows moving at least one buffer of
481 * any size, because it doesn't take the current "bo"
482 * into account. We don't want to disallow buffer moves
485 if ((lobj
->allowed_domains
& current_domain
) != 0 &&
486 (domain
& current_domain
) == 0 && /* will be moved */
487 bytes_moved
> bytes_moved_threshold
) {
489 domain
= current_domain
;
493 radeon_ttm_placement_from_domain(bo
, domain
);
494 if (ring
== R600_RING_TYPE_UVD_INDEX
)
495 radeon_uvd_force_into_uvd_segment(bo
);
497 initial_bytes_moved
= atomic64_read(&rdev
->num_bytes_moved
);
498 r
= ttm_bo_validate(&bo
->tbo
, &bo
->placement
, true, false);
499 bytes_moved
+= atomic64_read(&rdev
->num_bytes_moved
) -
503 if (r
!= -ERESTARTSYS
&&
504 domain
!= lobj
->allowed_domains
) {
505 domain
= lobj
->allowed_domains
;
508 ttm_eu_backoff_reservation(ticket
, head
);
512 lobj
->gpu_offset
= radeon_bo_gpu_offset(bo
);
513 lobj
->tiling_flags
= bo
->tiling_flags
;
518 int radeon_bo_fbdev_mmap(struct radeon_bo
*bo
,
519 struct vm_area_struct
*vma
)
521 return ttm_fbdev_mmap(vma
, &bo
->tbo
);
524 int radeon_bo_get_surface_reg(struct radeon_bo
*bo
)
526 struct radeon_device
*rdev
= bo
->rdev
;
527 struct radeon_surface_reg
*reg
;
528 struct radeon_bo
*old_object
;
532 lockdep_assert_held(&bo
->tbo
.resv
->lock
.base
);
534 if (!bo
->tiling_flags
)
537 if (bo
->surface_reg
>= 0) {
538 reg
= &rdev
->surface_regs
[bo
->surface_reg
];
544 for (i
= 0; i
< RADEON_GEM_MAX_SURFACES
; i
++) {
546 reg
= &rdev
->surface_regs
[i
];
550 old_object
= reg
->bo
;
551 if (old_object
->pin_count
== 0)
555 /* if we are all out */
556 if (i
== RADEON_GEM_MAX_SURFACES
) {
559 /* find someone with a surface reg and nuke their BO */
560 reg
= &rdev
->surface_regs
[steal
];
561 old_object
= reg
->bo
;
562 /* blow away the mapping */
563 DRM_DEBUG("stealing surface reg %d from %p\n", steal
, old_object
);
564 ttm_bo_unmap_virtual(&old_object
->tbo
);
565 old_object
->surface_reg
= -1;
573 radeon_set_surface_reg(rdev
, i
, bo
->tiling_flags
, bo
->pitch
,
574 bo
->tbo
.mem
.start
<< PAGE_SHIFT
,
575 bo
->tbo
.num_pages
<< PAGE_SHIFT
);
579 static void radeon_bo_clear_surface_reg(struct radeon_bo
*bo
)
581 struct radeon_device
*rdev
= bo
->rdev
;
582 struct radeon_surface_reg
*reg
;
584 if (bo
->surface_reg
== -1)
587 reg
= &rdev
->surface_regs
[bo
->surface_reg
];
588 radeon_clear_surface_reg(rdev
, bo
->surface_reg
);
591 bo
->surface_reg
= -1;
594 int radeon_bo_set_tiling_flags(struct radeon_bo
*bo
,
595 uint32_t tiling_flags
, uint32_t pitch
)
597 struct radeon_device
*rdev
= bo
->rdev
;
600 if (rdev
->family
>= CHIP_CEDAR
) {
601 unsigned bankw
, bankh
, mtaspect
, tilesplit
, stilesplit
;
603 bankw
= (tiling_flags
>> RADEON_TILING_EG_BANKW_SHIFT
) & RADEON_TILING_EG_BANKW_MASK
;
604 bankh
= (tiling_flags
>> RADEON_TILING_EG_BANKH_SHIFT
) & RADEON_TILING_EG_BANKH_MASK
;
605 mtaspect
= (tiling_flags
>> RADEON_TILING_EG_MACRO_TILE_ASPECT_SHIFT
) & RADEON_TILING_EG_MACRO_TILE_ASPECT_MASK
;
606 tilesplit
= (tiling_flags
>> RADEON_TILING_EG_TILE_SPLIT_SHIFT
) & RADEON_TILING_EG_TILE_SPLIT_MASK
;
607 stilesplit
= (tiling_flags
>> RADEON_TILING_EG_STENCIL_TILE_SPLIT_SHIFT
) & RADEON_TILING_EG_STENCIL_TILE_SPLIT_MASK
;
641 if (stilesplit
> 6) {
645 r
= radeon_bo_reserve(bo
, false);
646 if (unlikely(r
!= 0))
648 bo
->tiling_flags
= tiling_flags
;
650 radeon_bo_unreserve(bo
);
654 void radeon_bo_get_tiling_flags(struct radeon_bo
*bo
,
655 uint32_t *tiling_flags
,
658 lockdep_assert_held(&bo
->tbo
.resv
->lock
.base
);
661 *tiling_flags
= bo
->tiling_flags
;
666 int radeon_bo_check_tiling(struct radeon_bo
*bo
, bool has_moved
,
670 lockdep_assert_held(&bo
->tbo
.resv
->lock
.base
);
672 if (!(bo
->tiling_flags
& RADEON_TILING_SURFACE
))
676 radeon_bo_clear_surface_reg(bo
);
680 if (bo
->tbo
.mem
.mem_type
!= TTM_PL_VRAM
) {
684 if (bo
->surface_reg
>= 0)
685 radeon_bo_clear_surface_reg(bo
);
689 if ((bo
->surface_reg
>= 0) && !has_moved
)
692 return radeon_bo_get_surface_reg(bo
);
695 void radeon_bo_move_notify(struct ttm_buffer_object
*bo
,
696 struct ttm_mem_reg
*new_mem
)
698 struct radeon_bo
*rbo
;
700 if (!radeon_ttm_bo_is_radeon_bo(bo
))
703 rbo
= container_of(bo
, struct radeon_bo
, tbo
);
704 radeon_bo_check_tiling(rbo
, 0, 1);
705 radeon_vm_bo_invalidate(rbo
->rdev
, rbo
);
707 /* update statistics */
711 radeon_update_memory_usage(rbo
, bo
->mem
.mem_type
, -1);
712 radeon_update_memory_usage(rbo
, new_mem
->mem_type
, 1);
715 int radeon_bo_fault_reserve_notify(struct ttm_buffer_object
*bo
)
717 struct radeon_device
*rdev
;
718 struct radeon_bo
*rbo
;
719 unsigned long offset
, size
;
722 if (!radeon_ttm_bo_is_radeon_bo(bo
))
724 rbo
= container_of(bo
, struct radeon_bo
, tbo
);
725 radeon_bo_check_tiling(rbo
, 0, 0);
727 if (bo
->mem
.mem_type
!= TTM_PL_VRAM
)
730 size
= bo
->mem
.num_pages
<< PAGE_SHIFT
;
731 offset
= bo
->mem
.start
<< PAGE_SHIFT
;
732 if ((offset
+ size
) <= rdev
->mc
.visible_vram_size
)
735 /* hurrah the memory is not visible ! */
736 radeon_ttm_placement_from_domain(rbo
, RADEON_GEM_DOMAIN_VRAM
);
737 rbo
->placement
.lpfn
= rdev
->mc
.visible_vram_size
>> PAGE_SHIFT
;
738 r
= ttm_bo_validate(bo
, &rbo
->placement
, false, false);
739 if (unlikely(r
== -ENOMEM
)) {
740 radeon_ttm_placement_from_domain(rbo
, RADEON_GEM_DOMAIN_GTT
);
741 return ttm_bo_validate(bo
, &rbo
->placement
, false, false);
742 } else if (unlikely(r
!= 0)) {
746 offset
= bo
->mem
.start
<< PAGE_SHIFT
;
747 /* this should never happen */
748 if ((offset
+ size
) > rdev
->mc
.visible_vram_size
)
754 int radeon_bo_wait(struct radeon_bo
*bo
, u32
*mem_type
, bool no_wait
)
758 r
= ttm_bo_reserve(&bo
->tbo
, true, no_wait
, false, NULL
);
759 if (unlikely(r
!= 0))
761 spin_lock(&bo
->tbo
.bdev
->fence_lock
);
763 *mem_type
= bo
->tbo
.mem
.mem_type
;
764 if (bo
->tbo
.sync_obj
)
765 r
= ttm_bo_wait(&bo
->tbo
, true, true, no_wait
);
766 spin_unlock(&bo
->tbo
.bdev
->fence_lock
);
767 ttm_bo_unreserve(&bo
->tbo
);