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
29 * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
32 #include <linux/list.h>
33 #include <linux/slab.h>
34 #include <linux/dma-buf.h>
36 #include <drm/drm_drv.h>
37 #include <drm/amdgpu_drm.h>
38 #include <drm/drm_cache.h>
40 #include "amdgpu_trace.h"
41 #include "amdgpu_amdkfd.h"
46 * This defines the interfaces to operate on an &amdgpu_bo buffer object which
47 * represents memory used by driver (VRAM, system memory, etc.). The driver
48 * provides DRM/GEM APIs to userspace. DRM/GEM APIs then use these interfaces
49 * to create/destroy/set buffer object which are then managed by the kernel TTM
51 * The interfaces are also used internally by kernel clients, including gfx,
52 * uvd, etc. for kernel managed allocations used by the GPU.
56 static void amdgpu_bo_destroy(struct ttm_buffer_object *tbo)
58 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(tbo);
62 if (bo->tbo.base.import_attach)
63 drm_prime_gem_destroy(&bo->tbo.base, bo->tbo.sg);
64 drm_gem_object_release(&bo->tbo.base);
65 amdgpu_bo_unref(&bo->parent);
69 static void amdgpu_bo_user_destroy(struct ttm_buffer_object *tbo)
71 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(tbo);
72 struct amdgpu_bo_user *ubo;
74 ubo = to_amdgpu_bo_user(bo);
76 amdgpu_bo_destroy(tbo);
79 static void amdgpu_bo_vm_destroy(struct ttm_buffer_object *tbo)
81 struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev);
82 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(tbo);
83 struct amdgpu_bo_vm *vmbo;
85 vmbo = to_amdgpu_bo_vm(bo);
86 /* in case amdgpu_device_recover_vram got NULL of bo->parent */
87 if (!list_empty(&vmbo->shadow_list)) {
88 mutex_lock(&adev->shadow_list_lock);
89 list_del_init(&vmbo->shadow_list);
90 mutex_unlock(&adev->shadow_list_lock);
93 amdgpu_bo_destroy(tbo);
97 * amdgpu_bo_is_amdgpu_bo - check if the buffer object is an &amdgpu_bo
98 * @bo: buffer object to be checked
100 * Uses destroy function associated with the object to determine if this is
104 * true if the object belongs to &amdgpu_bo, false if not.
106 bool amdgpu_bo_is_amdgpu_bo(struct ttm_buffer_object *bo)
108 if (bo->destroy == &amdgpu_bo_destroy ||
109 bo->destroy == &amdgpu_bo_user_destroy ||
110 bo->destroy == &amdgpu_bo_vm_destroy)
117 * amdgpu_bo_placement_from_domain - set buffer's placement
118 * @abo: &amdgpu_bo buffer object whose placement is to be set
119 * @domain: requested domain
121 * Sets buffer's placement according to requested domain and the buffer's
124 void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
126 struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
127 struct ttm_placement *placement = &abo->placement;
128 struct ttm_place *places = abo->placements;
129 u64 flags = abo->flags;
132 if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
133 unsigned visible_pfn = adev->gmc.visible_vram_size >> PAGE_SHIFT;
137 places[c].mem_type = TTM_PL_VRAM;
140 if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
141 places[c].lpfn = visible_pfn;
143 places[c].flags |= TTM_PL_FLAG_TOPDOWN;
145 if (flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
146 places[c].flags |= TTM_PL_FLAG_CONTIGUOUS;
150 if (domain & AMDGPU_GEM_DOMAIN_GTT) {
154 abo->flags & AMDGPU_GEM_CREATE_PREEMPTIBLE ?
155 AMDGPU_PL_PREEMPT : TTM_PL_TT;
160 if (domain & AMDGPU_GEM_DOMAIN_CPU) {
163 places[c].mem_type = TTM_PL_SYSTEM;
168 if (domain & AMDGPU_GEM_DOMAIN_GDS) {
171 places[c].mem_type = AMDGPU_PL_GDS;
176 if (domain & AMDGPU_GEM_DOMAIN_GWS) {
179 places[c].mem_type = AMDGPU_PL_GWS;
184 if (domain & AMDGPU_GEM_DOMAIN_OA) {
187 places[c].mem_type = AMDGPU_PL_OA;
195 places[c].mem_type = TTM_PL_SYSTEM;
200 BUG_ON(c > AMDGPU_BO_MAX_PLACEMENTS);
202 placement->num_placement = c;
203 placement->placement = places;
205 placement->num_busy_placement = c;
206 placement->busy_placement = places;
210 * amdgpu_bo_create_reserved - create reserved BO for kernel use
212 * @adev: amdgpu device object
213 * @size: size for the new BO
214 * @align: alignment for the new BO
215 * @domain: where to place it
216 * @bo_ptr: used to initialize BOs in structures
217 * @gpu_addr: GPU addr of the pinned BO
218 * @cpu_addr: optional CPU address mapping
220 * Allocates and pins a BO for kernel internal use, and returns it still
223 * Note: For bo_ptr new BO is only created if bo_ptr points to NULL.
226 * 0 on success, negative error code otherwise.
228 int amdgpu_bo_create_reserved(struct amdgpu_device *adev,
229 unsigned long size, int align,
230 u32 domain, struct amdgpu_bo **bo_ptr,
231 u64 *gpu_addr, void **cpu_addr)
233 struct amdgpu_bo_param bp;
238 amdgpu_bo_unref(bo_ptr);
242 memset(&bp, 0, sizeof(bp));
244 bp.byte_align = align;
246 bp.flags = cpu_addr ? AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED
247 : AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
248 bp.flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
249 bp.type = ttm_bo_type_kernel;
251 bp.bo_ptr_size = sizeof(struct amdgpu_bo);
254 r = amdgpu_bo_create(adev, &bp, bo_ptr);
256 dev_err(adev->dev, "(%d) failed to allocate kernel bo\n",
263 r = amdgpu_bo_reserve(*bo_ptr, false);
265 dev_err(adev->dev, "(%d) failed to reserve kernel bo\n", r);
269 r = amdgpu_bo_pin(*bo_ptr, domain);
271 dev_err(adev->dev, "(%d) kernel bo pin failed\n", r);
272 goto error_unreserve;
275 r = amdgpu_ttm_alloc_gart(&(*bo_ptr)->tbo);
277 dev_err(adev->dev, "%p bind failed\n", *bo_ptr);
282 *gpu_addr = amdgpu_bo_gpu_offset(*bo_ptr);
285 r = amdgpu_bo_kmap(*bo_ptr, cpu_addr);
287 dev_err(adev->dev, "(%d) kernel bo map failed\n", r);
295 amdgpu_bo_unpin(*bo_ptr);
297 amdgpu_bo_unreserve(*bo_ptr);
301 amdgpu_bo_unref(bo_ptr);
307 * amdgpu_bo_create_kernel - create BO for kernel use
309 * @adev: amdgpu device object
310 * @size: size for the new BO
311 * @align: alignment for the new BO
312 * @domain: where to place it
313 * @bo_ptr: used to initialize BOs in structures
314 * @gpu_addr: GPU addr of the pinned BO
315 * @cpu_addr: optional CPU address mapping
317 * Allocates and pins a BO for kernel internal use.
319 * Note: For bo_ptr new BO is only created if bo_ptr points to NULL.
322 * 0 on success, negative error code otherwise.
324 int amdgpu_bo_create_kernel(struct amdgpu_device *adev,
325 unsigned long size, int align,
326 u32 domain, struct amdgpu_bo **bo_ptr,
327 u64 *gpu_addr, void **cpu_addr)
331 r = amdgpu_bo_create_reserved(adev, size, align, domain, bo_ptr,
338 amdgpu_bo_unreserve(*bo_ptr);
344 * amdgpu_bo_create_kernel_at - create BO for kernel use at specific location
346 * @adev: amdgpu device object
347 * @offset: offset of the BO
348 * @size: size of the BO
349 * @domain: where to place it
350 * @bo_ptr: used to initialize BOs in structures
351 * @cpu_addr: optional CPU address mapping
353 * Creates a kernel BO at a specific offset in the address space of the domain.
356 * 0 on success, negative error code otherwise.
358 int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
359 uint64_t offset, uint64_t size, uint32_t domain,
360 struct amdgpu_bo **bo_ptr, void **cpu_addr)
362 struct ttm_operation_ctx ctx = { false, false };
367 size = ALIGN(size, PAGE_SIZE);
369 r = amdgpu_bo_create_reserved(adev, size, PAGE_SIZE, domain, bo_ptr,
374 if ((*bo_ptr) == NULL)
378 * Remove the original mem node and create a new one at the request
382 amdgpu_bo_kunmap(*bo_ptr);
384 ttm_resource_free(&(*bo_ptr)->tbo, &(*bo_ptr)->tbo.resource);
386 for (i = 0; i < (*bo_ptr)->placement.num_placement; ++i) {
387 (*bo_ptr)->placements[i].fpfn = offset >> PAGE_SHIFT;
388 (*bo_ptr)->placements[i].lpfn = (offset + size) >> PAGE_SHIFT;
390 r = ttm_bo_mem_space(&(*bo_ptr)->tbo, &(*bo_ptr)->placement,
391 &(*bo_ptr)->tbo.resource, &ctx);
396 r = amdgpu_bo_kmap(*bo_ptr, cpu_addr);
401 amdgpu_bo_unreserve(*bo_ptr);
405 amdgpu_bo_unreserve(*bo_ptr);
406 amdgpu_bo_unref(bo_ptr);
411 * amdgpu_bo_free_kernel - free BO for kernel use
413 * @bo: amdgpu BO to free
414 * @gpu_addr: pointer to where the BO's GPU memory space address was stored
415 * @cpu_addr: pointer to where the BO's CPU memory space address was stored
417 * unmaps and unpin a BO for kernel internal use.
419 void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
425 if (likely(amdgpu_bo_reserve(*bo, true) == 0)) {
427 amdgpu_bo_kunmap(*bo);
429 amdgpu_bo_unpin(*bo);
430 amdgpu_bo_unreserve(*bo);
441 /* Validate bo size is bit bigger then the request domain */
442 static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
443 unsigned long size, u32 domain)
445 struct ttm_resource_manager *man = NULL;
448 * If GTT is part of requested domains the check must succeed to
449 * allow fall back to GTT
451 if (domain & AMDGPU_GEM_DOMAIN_GTT) {
452 man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
454 if (size < man->size)
460 if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
461 man = ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM);
463 if (size < man->size)
470 /* TODO add more domains checks, such as AMDGPU_GEM_DOMAIN_CPU */
474 DRM_DEBUG("BO size %lu > total memory in domain: %llu\n", size,
479 bool amdgpu_bo_support_uswc(u64 bo_flags)
483 /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit
484 * See https://bugs.freedesktop.org/show_bug.cgi?id=84627
487 #elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT)
488 /* Don't try to enable write-combining when it can't work, or things
490 * See https://bugs.freedesktop.org/show_bug.cgi?id=88758
493 #ifndef CONFIG_COMPILE_TEST
494 #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
495 thanks to write-combining
498 if (bo_flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
499 DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
500 "better performance thanks to write-combining\n");
503 /* For architectures that don't support WC memory,
504 * mask out the WC flag from the BO
506 if (!drm_arch_can_wc_memory())
514 * amdgpu_bo_create - create an &amdgpu_bo buffer object
515 * @adev: amdgpu device object
516 * @bp: parameters to be used for the buffer object
517 * @bo_ptr: pointer to the buffer object pointer
519 * Creates an &amdgpu_bo buffer object.
522 * 0 for success or a negative error code on failure.
524 int amdgpu_bo_create(struct amdgpu_device *adev,
525 struct amdgpu_bo_param *bp,
526 struct amdgpu_bo **bo_ptr)
528 struct ttm_operation_ctx ctx = {
529 .interruptible = (bp->type != ttm_bo_type_kernel),
530 .no_wait_gpu = bp->no_wait_gpu,
531 /* We opt to avoid OOM on system pages allocations */
532 .gfp_retry_mayfail = true,
533 .allow_res_evict = bp->type != ttm_bo_type_kernel,
536 struct amdgpu_bo *bo;
537 unsigned long page_align, size = bp->size;
540 /* Note that GDS/GWS/OA allocates 1 page per byte/resource. */
541 if (bp->domain & (AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
542 /* GWS and OA don't need any alignment. */
543 page_align = bp->byte_align;
545 } else if (bp->domain & AMDGPU_GEM_DOMAIN_GDS) {
546 /* Both size and alignment must be a multiple of 4. */
547 page_align = ALIGN(bp->byte_align, 4);
548 size = ALIGN(size, 4) << PAGE_SHIFT;
550 /* Memory should be aligned at least to a page size. */
551 page_align = ALIGN(bp->byte_align, PAGE_SIZE) >> PAGE_SHIFT;
552 size = ALIGN(size, PAGE_SIZE);
555 if (!amdgpu_bo_validate_size(adev, size, bp->domain))
558 BUG_ON(bp->bo_ptr_size < sizeof(struct amdgpu_bo));
561 bo = kvzalloc(bp->bo_ptr_size, GFP_KERNEL);
564 drm_gem_private_object_init(adev_to_drm(adev), &bo->tbo.base, size);
566 bo->preferred_domains = bp->preferred_domain ? bp->preferred_domain :
568 bo->allowed_domains = bo->preferred_domains;
569 if (bp->type != ttm_bo_type_kernel &&
570 !(bp->flags & AMDGPU_GEM_CREATE_DISCARDABLE) &&
571 bo->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
572 bo->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
574 bo->flags = bp->flags;
576 if (!amdgpu_bo_support_uswc(bo->flags))
577 bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
579 if (adev->ras_enabled)
580 bo->flags |= AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE;
582 bo->tbo.bdev = &adev->mman.bdev;
583 if (bp->domain & (AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA |
584 AMDGPU_GEM_DOMAIN_GDS))
585 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_CPU);
587 amdgpu_bo_placement_from_domain(bo, bp->domain);
588 if (bp->type == ttm_bo_type_kernel)
589 bo->tbo.priority = 1;
592 bp->destroy = &amdgpu_bo_destroy;
594 r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, size, bp->type,
595 &bo->placement, page_align, &ctx, NULL,
596 bp->resv, bp->destroy);
597 if (unlikely(r != 0))
600 if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
601 bo->tbo.resource->mem_type == TTM_PL_VRAM &&
602 bo->tbo.resource->start < adev->gmc.visible_vram_size >> PAGE_SHIFT)
603 amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved,
606 amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved, 0);
608 if (bp->flags & AMDGPU_GEM_CREATE_VRAM_CLEARED &&
609 bo->tbo.resource->mem_type == TTM_PL_VRAM) {
610 struct dma_fence *fence;
612 r = amdgpu_fill_buffer(bo, 0, bo->tbo.base.resv, &fence);
616 dma_resv_add_fence(bo->tbo.base.resv, fence,
617 DMA_RESV_USAGE_KERNEL);
618 dma_fence_put(fence);
621 amdgpu_bo_unreserve(bo);
624 trace_amdgpu_bo_create(bo);
626 /* Treat CPU_ACCESS_REQUIRED only as a hint if given by UMD */
627 if (bp->type == ttm_bo_type_device)
628 bo->flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
634 dma_resv_unlock(bo->tbo.base.resv);
635 amdgpu_bo_unref(&bo);
640 * amdgpu_bo_create_user - create an &amdgpu_bo_user buffer object
641 * @adev: amdgpu device object
642 * @bp: parameters to be used for the buffer object
643 * @ubo_ptr: pointer to the buffer object pointer
645 * Create a BO to be used by user application;
648 * 0 for success or a negative error code on failure.
651 int amdgpu_bo_create_user(struct amdgpu_device *adev,
652 struct amdgpu_bo_param *bp,
653 struct amdgpu_bo_user **ubo_ptr)
655 struct amdgpu_bo *bo_ptr;
658 bp->bo_ptr_size = sizeof(struct amdgpu_bo_user);
659 bp->destroy = &amdgpu_bo_user_destroy;
660 r = amdgpu_bo_create(adev, bp, &bo_ptr);
664 *ubo_ptr = to_amdgpu_bo_user(bo_ptr);
669 * amdgpu_bo_create_vm - create an &amdgpu_bo_vm buffer object
670 * @adev: amdgpu device object
671 * @bp: parameters to be used for the buffer object
672 * @vmbo_ptr: pointer to the buffer object pointer
674 * Create a BO to be for GPUVM.
677 * 0 for success or a negative error code on failure.
680 int amdgpu_bo_create_vm(struct amdgpu_device *adev,
681 struct amdgpu_bo_param *bp,
682 struct amdgpu_bo_vm **vmbo_ptr)
684 struct amdgpu_bo *bo_ptr;
687 /* bo_ptr_size will be determined by the caller and it depends on
688 * num of amdgpu_vm_pt entries.
690 BUG_ON(bp->bo_ptr_size < sizeof(struct amdgpu_bo_vm));
691 bp->destroy = &amdgpu_bo_vm_destroy;
692 r = amdgpu_bo_create(adev, bp, &bo_ptr);
696 *vmbo_ptr = to_amdgpu_bo_vm(bo_ptr);
697 INIT_LIST_HEAD(&(*vmbo_ptr)->shadow_list);
702 * amdgpu_bo_add_to_shadow_list - add a BO to the shadow list
704 * @vmbo: BO that will be inserted into the shadow list
706 * Insert a BO to the shadow list.
708 void amdgpu_bo_add_to_shadow_list(struct amdgpu_bo_vm *vmbo)
710 struct amdgpu_device *adev = amdgpu_ttm_adev(vmbo->bo.tbo.bdev);
712 mutex_lock(&adev->shadow_list_lock);
713 list_add_tail(&vmbo->shadow_list, &adev->shadow_list);
714 mutex_unlock(&adev->shadow_list_lock);
718 * amdgpu_bo_restore_shadow - restore an &amdgpu_bo shadow
720 * @shadow: &amdgpu_bo shadow to be restored
721 * @fence: dma_fence associated with the operation
723 * Copies a buffer object's shadow content back to the object.
724 * This is used for recovering a buffer from its shadow in case of a gpu
725 * reset where vram context may be lost.
728 * 0 for success or a negative error code on failure.
730 int amdgpu_bo_restore_shadow(struct amdgpu_bo *shadow, struct dma_fence **fence)
733 struct amdgpu_device *adev = amdgpu_ttm_adev(shadow->tbo.bdev);
734 struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
735 uint64_t shadow_addr, parent_addr;
737 shadow_addr = amdgpu_bo_gpu_offset(shadow);
738 parent_addr = amdgpu_bo_gpu_offset(shadow->parent);
740 return amdgpu_copy_buffer(ring, shadow_addr, parent_addr,
741 amdgpu_bo_size(shadow), NULL, fence,
746 * amdgpu_bo_kmap - map an &amdgpu_bo buffer object
747 * @bo: &amdgpu_bo buffer object to be mapped
748 * @ptr: kernel virtual address to be returned
750 * Calls ttm_bo_kmap() to set up the kernel virtual mapping; calls
751 * amdgpu_bo_kptr() to get the kernel virtual address.
754 * 0 for success or a negative error code on failure.
756 int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
761 if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
764 r = dma_resv_wait_timeout(bo->tbo.base.resv, DMA_RESV_USAGE_KERNEL,
765 false, MAX_SCHEDULE_TIMEOUT);
769 kptr = amdgpu_bo_kptr(bo);
776 r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.resource->num_pages, &bo->kmap);
781 *ptr = amdgpu_bo_kptr(bo);
787 * amdgpu_bo_kptr - returns a kernel virtual address of the buffer object
788 * @bo: &amdgpu_bo buffer object
790 * Calls ttm_kmap_obj_virtual() to get the kernel virtual address
793 * the virtual address of a buffer object area.
795 void *amdgpu_bo_kptr(struct amdgpu_bo *bo)
799 return ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
803 * amdgpu_bo_kunmap - unmap an &amdgpu_bo buffer object
804 * @bo: &amdgpu_bo buffer object to be unmapped
806 * Unmaps a kernel map set up by amdgpu_bo_kmap().
808 void amdgpu_bo_kunmap(struct amdgpu_bo *bo)
811 ttm_bo_kunmap(&bo->kmap);
815 * amdgpu_bo_ref - reference an &amdgpu_bo buffer object
816 * @bo: &amdgpu_bo buffer object
818 * References the contained &ttm_buffer_object.
821 * a refcounted pointer to the &amdgpu_bo buffer object.
823 struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo)
828 ttm_bo_get(&bo->tbo);
833 * amdgpu_bo_unref - unreference an &amdgpu_bo buffer object
834 * @bo: &amdgpu_bo buffer object
836 * Unreferences the contained &ttm_buffer_object and clear the pointer
838 void amdgpu_bo_unref(struct amdgpu_bo **bo)
840 struct ttm_buffer_object *tbo;
851 * amdgpu_bo_pin_restricted - pin an &amdgpu_bo buffer object
852 * @bo: &amdgpu_bo buffer object to be pinned
853 * @domain: domain to be pinned to
854 * @min_offset: the start of requested address range
855 * @max_offset: the end of requested address range
857 * Pins the buffer object according to requested domain and address range. If
858 * the memory is unbound gart memory, binds the pages into gart table. Adjusts
859 * pin_count and pin_size accordingly.
861 * Pinning means to lock pages in memory along with keeping them at a fixed
862 * offset. It is required when a buffer can not be moved, for example, when
863 * a display buffer is being scanned out.
865 * Compared with amdgpu_bo_pin(), this function gives more flexibility on
866 * where to pin a buffer if there are specific restrictions on where a buffer
870 * 0 for success or a negative error code on failure.
872 int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
873 u64 min_offset, u64 max_offset)
875 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
876 struct ttm_operation_ctx ctx = { false, false };
879 if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm))
882 if (WARN_ON_ONCE(min_offset > max_offset))
885 /* A shared bo cannot be migrated to VRAM */
886 if (bo->tbo.base.import_attach) {
887 if (domain & AMDGPU_GEM_DOMAIN_GTT)
888 domain = AMDGPU_GEM_DOMAIN_GTT;
893 if (bo->tbo.pin_count) {
894 uint32_t mem_type = bo->tbo.resource->mem_type;
895 uint32_t mem_flags = bo->tbo.resource->placement;
897 if (!(domain & amdgpu_mem_type_to_domain(mem_type)))
900 if ((mem_type == TTM_PL_VRAM) &&
901 (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS) &&
902 !(mem_flags & TTM_PL_FLAG_CONTIGUOUS))
905 ttm_bo_pin(&bo->tbo);
907 if (max_offset != 0) {
908 u64 domain_start = amdgpu_ttm_domain_start(adev,
910 WARN_ON_ONCE(max_offset <
911 (amdgpu_bo_gpu_offset(bo) - domain_start));
917 /* This assumes only APU display buffers are pinned with (VRAM|GTT).
918 * See function amdgpu_display_supported_domains()
920 domain = amdgpu_bo_get_preferred_domain(adev, domain);
922 if (bo->tbo.base.import_attach)
923 dma_buf_pin(bo->tbo.base.import_attach);
925 /* force to pin into visible video ram */
926 if (!(bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS))
927 bo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
928 amdgpu_bo_placement_from_domain(bo, domain);
929 for (i = 0; i < bo->placement.num_placement; i++) {
932 fpfn = min_offset >> PAGE_SHIFT;
933 lpfn = max_offset >> PAGE_SHIFT;
935 if (fpfn > bo->placements[i].fpfn)
936 bo->placements[i].fpfn = fpfn;
937 if (!bo->placements[i].lpfn ||
938 (lpfn && lpfn < bo->placements[i].lpfn))
939 bo->placements[i].lpfn = lpfn;
942 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
944 dev_err(adev->dev, "%p pin failed\n", bo);
948 ttm_bo_pin(&bo->tbo);
950 domain = amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type);
951 if (domain == AMDGPU_GEM_DOMAIN_VRAM) {
952 atomic64_add(amdgpu_bo_size(bo), &adev->vram_pin_size);
953 atomic64_add(amdgpu_vram_mgr_bo_visible_size(bo),
954 &adev->visible_pin_size);
955 } else if (domain == AMDGPU_GEM_DOMAIN_GTT) {
956 atomic64_add(amdgpu_bo_size(bo), &adev->gart_pin_size);
964 * amdgpu_bo_pin - pin an &amdgpu_bo buffer object
965 * @bo: &amdgpu_bo buffer object to be pinned
966 * @domain: domain to be pinned to
968 * A simple wrapper to amdgpu_bo_pin_restricted().
969 * Provides a simpler API for buffers that do not have any strict restrictions
970 * on where a buffer must be located.
973 * 0 for success or a negative error code on failure.
975 int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain)
977 bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
978 return amdgpu_bo_pin_restricted(bo, domain, 0, 0);
982 * amdgpu_bo_unpin - unpin an &amdgpu_bo buffer object
983 * @bo: &amdgpu_bo buffer object to be unpinned
985 * Decreases the pin_count, and clears the flags if pin_count reaches 0.
986 * Changes placement and pin size accordingly.
989 * 0 for success or a negative error code on failure.
991 void amdgpu_bo_unpin(struct amdgpu_bo *bo)
993 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
995 ttm_bo_unpin(&bo->tbo);
996 if (bo->tbo.pin_count)
999 if (bo->tbo.base.import_attach)
1000 dma_buf_unpin(bo->tbo.base.import_attach);
1002 if (bo->tbo.resource->mem_type == TTM_PL_VRAM) {
1003 atomic64_sub(amdgpu_bo_size(bo), &adev->vram_pin_size);
1004 atomic64_sub(amdgpu_vram_mgr_bo_visible_size(bo),
1005 &adev->visible_pin_size);
1006 } else if (bo->tbo.resource->mem_type == TTM_PL_TT) {
1007 atomic64_sub(amdgpu_bo_size(bo), &adev->gart_pin_size);
1011 static const char *amdgpu_vram_names[] = {
1028 * amdgpu_bo_init - initialize memory manager
1029 * @adev: amdgpu device object
1031 * Calls amdgpu_ttm_init() to initialize amdgpu memory manager.
1034 * 0 for success or a negative error code on failure.
1036 int amdgpu_bo_init(struct amdgpu_device *adev)
1038 /* On A+A platform, VRAM can be mapped as WB */
1039 if (!adev->gmc.xgmi.connected_to_cpu) {
1040 /* reserve PAT memory space to WC for VRAM */
1041 int r = arch_io_reserve_memtype_wc(adev->gmc.aper_base,
1042 adev->gmc.aper_size);
1045 DRM_ERROR("Unable to set WC memtype for the aperture base\n");
1049 /* Add an MTRR for the VRAM */
1050 adev->gmc.vram_mtrr = arch_phys_wc_add(adev->gmc.aper_base,
1051 adev->gmc.aper_size);
1054 DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
1055 adev->gmc.mc_vram_size >> 20,
1056 (unsigned long long)adev->gmc.aper_size >> 20);
1057 DRM_INFO("RAM width %dbits %s\n",
1058 adev->gmc.vram_width, amdgpu_vram_names[adev->gmc.vram_type]);
1059 return amdgpu_ttm_init(adev);
1063 * amdgpu_bo_fini - tear down memory manager
1064 * @adev: amdgpu device object
1066 * Reverses amdgpu_bo_init() to tear down memory manager.
1068 void amdgpu_bo_fini(struct amdgpu_device *adev)
1072 amdgpu_ttm_fini(adev);
1074 if (drm_dev_enter(adev_to_drm(adev), &idx)) {
1076 if (!adev->gmc.xgmi.connected_to_cpu) {
1077 arch_phys_wc_del(adev->gmc.vram_mtrr);
1078 arch_io_free_memtype_wc(adev->gmc.aper_base, adev->gmc.aper_size);
1085 * amdgpu_bo_set_tiling_flags - set tiling flags
1086 * @bo: &amdgpu_bo buffer object
1087 * @tiling_flags: new flags
1089 * Sets buffer object's tiling flags with the new one. Used by GEM ioctl or
1090 * kernel driver to set the tiling flags on a buffer.
1093 * 0 for success or a negative error code on failure.
1095 int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags)
1097 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
1098 struct amdgpu_bo_user *ubo;
1100 BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
1101 if (adev->family <= AMDGPU_FAMILY_CZ &&
1102 AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT) > 6)
1105 ubo = to_amdgpu_bo_user(bo);
1106 ubo->tiling_flags = tiling_flags;
1111 * amdgpu_bo_get_tiling_flags - get tiling flags
1112 * @bo: &amdgpu_bo buffer object
1113 * @tiling_flags: returned flags
1115 * Gets buffer object's tiling flags. Used by GEM ioctl or kernel driver to
1116 * set the tiling flags on a buffer.
1118 void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags)
1120 struct amdgpu_bo_user *ubo;
1122 BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
1123 dma_resv_assert_held(bo->tbo.base.resv);
1124 ubo = to_amdgpu_bo_user(bo);
1127 *tiling_flags = ubo->tiling_flags;
1131 * amdgpu_bo_set_metadata - set metadata
1132 * @bo: &amdgpu_bo buffer object
1133 * @metadata: new metadata
1134 * @metadata_size: size of the new metadata
1135 * @flags: flags of the new metadata
1137 * Sets buffer object's metadata, its size and flags.
1138 * Used via GEM ioctl.
1141 * 0 for success or a negative error code on failure.
1143 int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
1144 uint32_t metadata_size, uint64_t flags)
1146 struct amdgpu_bo_user *ubo;
1149 BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
1150 ubo = to_amdgpu_bo_user(bo);
1151 if (!metadata_size) {
1152 if (ubo->metadata_size) {
1153 kfree(ubo->metadata);
1154 ubo->metadata = NULL;
1155 ubo->metadata_size = 0;
1160 if (metadata == NULL)
1163 buffer = kmemdup(metadata, metadata_size, GFP_KERNEL);
1167 kfree(ubo->metadata);
1168 ubo->metadata_flags = flags;
1169 ubo->metadata = buffer;
1170 ubo->metadata_size = metadata_size;
1176 * amdgpu_bo_get_metadata - get metadata
1177 * @bo: &amdgpu_bo buffer object
1178 * @buffer: returned metadata
1179 * @buffer_size: size of the buffer
1180 * @metadata_size: size of the returned metadata
1181 * @flags: flags of the returned metadata
1183 * Gets buffer object's metadata, its size and flags. buffer_size shall not be
1184 * less than metadata_size.
1185 * Used via GEM ioctl.
1188 * 0 for success or a negative error code on failure.
1190 int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
1191 size_t buffer_size, uint32_t *metadata_size,
1194 struct amdgpu_bo_user *ubo;
1196 if (!buffer && !metadata_size)
1199 BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
1200 ubo = to_amdgpu_bo_user(bo);
1202 *metadata_size = ubo->metadata_size;
1205 if (buffer_size < ubo->metadata_size)
1208 if (ubo->metadata_size)
1209 memcpy(buffer, ubo->metadata, ubo->metadata_size);
1213 *flags = ubo->metadata_flags;
1219 * amdgpu_bo_move_notify - notification about a memory move
1220 * @bo: pointer to a buffer object
1221 * @evict: if this move is evicting the buffer from the graphics address space
1222 * @new_mem: new information of the bufer object
1224 * Marks the corresponding &amdgpu_bo buffer object as invalid, also performs
1226 * TTM driver callback which is called when ttm moves a buffer.
1228 void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
1230 struct ttm_resource *new_mem)
1232 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
1233 struct amdgpu_bo *abo;
1234 struct ttm_resource *old_mem = bo->resource;
1236 if (!amdgpu_bo_is_amdgpu_bo(bo))
1239 abo = ttm_to_amdgpu_bo(bo);
1240 amdgpu_vm_bo_invalidate(adev, abo, evict);
1242 amdgpu_bo_kunmap(abo);
1244 if (abo->tbo.base.dma_buf && !abo->tbo.base.import_attach &&
1245 bo->resource->mem_type != TTM_PL_SYSTEM)
1246 dma_buf_move_notify(abo->tbo.base.dma_buf);
1248 /* remember the eviction */
1250 atomic64_inc(&adev->num_evictions);
1252 /* update statistics */
1256 /* move_notify is called before move happens */
1257 trace_amdgpu_bo_move(abo, new_mem->mem_type, old_mem->mem_type);
1260 void amdgpu_bo_get_memory(struct amdgpu_bo *bo, uint64_t *vram_mem,
1261 uint64_t *gtt_mem, uint64_t *cpu_mem)
1263 unsigned int domain;
1265 domain = amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type);
1267 case AMDGPU_GEM_DOMAIN_VRAM:
1268 *vram_mem += amdgpu_bo_size(bo);
1270 case AMDGPU_GEM_DOMAIN_GTT:
1271 *gtt_mem += amdgpu_bo_size(bo);
1273 case AMDGPU_GEM_DOMAIN_CPU:
1275 *cpu_mem += amdgpu_bo_size(bo);
1281 * amdgpu_bo_release_notify - notification about a BO being released
1282 * @bo: pointer to a buffer object
1284 * Wipes VRAM buffers whose contents should not be leaked before the
1285 * memory is released.
1287 void amdgpu_bo_release_notify(struct ttm_buffer_object *bo)
1289 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
1290 struct dma_fence *fence = NULL;
1291 struct amdgpu_bo *abo;
1294 if (!amdgpu_bo_is_amdgpu_bo(bo))
1297 abo = ttm_to_amdgpu_bo(bo);
1300 amdgpu_amdkfd_release_notify(abo);
1302 /* We only remove the fence if the resv has individualized. */
1303 WARN_ON_ONCE(bo->type == ttm_bo_type_kernel
1304 && bo->base.resv != &bo->base._resv);
1305 if (bo->base.resv == &bo->base._resv)
1306 amdgpu_amdkfd_remove_fence_on_pt_pd_bos(abo);
1308 if (bo->resource->mem_type != TTM_PL_VRAM ||
1309 !(abo->flags & AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE) ||
1310 adev->in_suspend || adev->shutdown)
1313 if (WARN_ON_ONCE(!dma_resv_trylock(bo->base.resv)))
1316 r = amdgpu_fill_buffer(abo, AMDGPU_POISON, bo->base.resv, &fence);
1318 amdgpu_bo_fence(abo, fence, false);
1319 dma_fence_put(fence);
1322 dma_resv_unlock(bo->base.resv);
1326 * amdgpu_bo_fault_reserve_notify - notification about a memory fault
1327 * @bo: pointer to a buffer object
1329 * Notifies the driver we are taking a fault on this BO and have reserved it,
1330 * also performs bookkeeping.
1331 * TTM driver callback for dealing with vm faults.
1334 * 0 for success or a negative error code on failure.
1336 vm_fault_t amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
1338 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
1339 struct ttm_operation_ctx ctx = { false, false };
1340 struct amdgpu_bo *abo = ttm_to_amdgpu_bo(bo);
1341 unsigned long offset;
1344 /* Remember that this BO was accessed by the CPU */
1345 abo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
1347 if (bo->resource->mem_type != TTM_PL_VRAM)
1350 offset = bo->resource->start << PAGE_SHIFT;
1351 if ((offset + bo->base.size) <= adev->gmc.visible_vram_size)
1354 /* Can't move a pinned BO to visible VRAM */
1355 if (abo->tbo.pin_count > 0)
1356 return VM_FAULT_SIGBUS;
1358 /* hurrah the memory is not visible ! */
1359 atomic64_inc(&adev->num_vram_cpu_page_faults);
1360 amdgpu_bo_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM |
1361 AMDGPU_GEM_DOMAIN_GTT);
1363 /* Avoid costly evictions; only set GTT as a busy placement */
1364 abo->placement.num_busy_placement = 1;
1365 abo->placement.busy_placement = &abo->placements[1];
1367 r = ttm_bo_validate(bo, &abo->placement, &ctx);
1368 if (unlikely(r == -EBUSY || r == -ERESTARTSYS))
1369 return VM_FAULT_NOPAGE;
1370 else if (unlikely(r))
1371 return VM_FAULT_SIGBUS;
1373 offset = bo->resource->start << PAGE_SHIFT;
1374 /* this should never happen */
1375 if (bo->resource->mem_type == TTM_PL_VRAM &&
1376 (offset + bo->base.size) > adev->gmc.visible_vram_size)
1377 return VM_FAULT_SIGBUS;
1379 ttm_bo_move_to_lru_tail_unlocked(bo);
1384 * amdgpu_bo_fence - add fence to buffer object
1386 * @bo: buffer object in question
1387 * @fence: fence to add
1388 * @shared: true if fence should be added shared
1391 void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
1394 struct dma_resv *resv = bo->tbo.base.resv;
1397 r = dma_resv_reserve_fences(resv, 1);
1399 /* As last resort on OOM we block for the fence */
1400 dma_fence_wait(fence, false);
1404 dma_resv_add_fence(resv, fence, shared ? DMA_RESV_USAGE_READ :
1405 DMA_RESV_USAGE_WRITE);
1409 * amdgpu_bo_sync_wait_resv - Wait for BO reservation fences
1411 * @adev: amdgpu device pointer
1412 * @resv: reservation object to sync to
1413 * @sync_mode: synchronization mode
1414 * @owner: fence owner
1415 * @intr: Whether the wait is interruptible
1417 * Extract the fences from the reservation object and waits for them to finish.
1420 * 0 on success, errno otherwise.
1422 int amdgpu_bo_sync_wait_resv(struct amdgpu_device *adev, struct dma_resv *resv,
1423 enum amdgpu_sync_mode sync_mode, void *owner,
1426 struct amdgpu_sync sync;
1429 amdgpu_sync_create(&sync);
1430 amdgpu_sync_resv(adev, &sync, resv, sync_mode, owner);
1431 r = amdgpu_sync_wait(&sync, intr);
1432 amdgpu_sync_free(&sync);
1437 * amdgpu_bo_sync_wait - Wrapper for amdgpu_bo_sync_wait_resv
1438 * @bo: buffer object to wait for
1439 * @owner: fence owner
1440 * @intr: Whether the wait is interruptible
1442 * Wrapper to wait for fences in a BO.
1444 * 0 on success, errno otherwise.
1446 int amdgpu_bo_sync_wait(struct amdgpu_bo *bo, void *owner, bool intr)
1448 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
1450 return amdgpu_bo_sync_wait_resv(adev, bo->tbo.base.resv,
1451 AMDGPU_SYNC_NE_OWNER, owner, intr);
1455 * amdgpu_bo_gpu_offset - return GPU offset of bo
1456 * @bo: amdgpu object for which we query the offset
1458 * Note: object should either be pinned or reserved when calling this
1459 * function, it might be useful to add check for this for debugging.
1462 * current GPU offset of the object.
1464 u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
1466 WARN_ON_ONCE(bo->tbo.resource->mem_type == TTM_PL_SYSTEM);
1467 WARN_ON_ONCE(!dma_resv_is_locked(bo->tbo.base.resv) &&
1468 !bo->tbo.pin_count && bo->tbo.type != ttm_bo_type_kernel);
1469 WARN_ON_ONCE(bo->tbo.resource->start == AMDGPU_BO_INVALID_OFFSET);
1470 WARN_ON_ONCE(bo->tbo.resource->mem_type == TTM_PL_VRAM &&
1471 !(bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS));
1473 return amdgpu_bo_gpu_offset_no_check(bo);
1477 * amdgpu_bo_gpu_offset_no_check - return GPU offset of bo
1478 * @bo: amdgpu object for which we query the offset
1481 * current GPU offset of the object without raising warnings.
1483 u64 amdgpu_bo_gpu_offset_no_check(struct amdgpu_bo *bo)
1485 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
1488 offset = (bo->tbo.resource->start << PAGE_SHIFT) +
1489 amdgpu_ttm_domain_start(adev, bo->tbo.resource->mem_type);
1491 return amdgpu_gmc_sign_extend(offset);
1495 * amdgpu_bo_get_preferred_domain - get preferred domain
1496 * @adev: amdgpu device object
1497 * @domain: allowed :ref:`memory domains <amdgpu_memory_domains>`
1500 * Which of the allowed domains is preferred for allocating the BO.
1502 uint32_t amdgpu_bo_get_preferred_domain(struct amdgpu_device *adev,
1505 if (domain == (AMDGPU_GEM_DOMAIN_VRAM | AMDGPU_GEM_DOMAIN_GTT)) {
1506 domain = AMDGPU_GEM_DOMAIN_VRAM;
1507 if (adev->gmc.real_vram_size <= AMDGPU_SG_THRESHOLD)
1508 domain = AMDGPU_GEM_DOMAIN_GTT;
1513 #if defined(CONFIG_DEBUG_FS)
1514 #define amdgpu_bo_print_flag(m, bo, flag) \
1516 if (bo->flags & (AMDGPU_GEM_CREATE_ ## flag)) { \
1517 seq_printf((m), " " #flag); \
1522 * amdgpu_bo_print_info - print BO info in debugfs file
1524 * @id: Index or Id of the BO
1525 * @bo: Requested BO for printing info
1528 * Print BO information in debugfs file
1531 * Size of the BO in bytes.
1533 u64 amdgpu_bo_print_info(int id, struct amdgpu_bo *bo, struct seq_file *m)
1535 struct dma_buf_attachment *attachment;
1536 struct dma_buf *dma_buf;
1537 unsigned int domain;
1538 const char *placement;
1539 unsigned int pin_count;
1542 domain = amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type);
1544 case AMDGPU_GEM_DOMAIN_VRAM:
1547 case AMDGPU_GEM_DOMAIN_GTT:
1550 case AMDGPU_GEM_DOMAIN_CPU:
1556 size = amdgpu_bo_size(bo);
1557 seq_printf(m, "\t\t0x%08x: %12lld byte %s",
1558 id, size, placement);
1560 pin_count = READ_ONCE(bo->tbo.pin_count);
1562 seq_printf(m, " pin count %d", pin_count);
1564 dma_buf = READ_ONCE(bo->tbo.base.dma_buf);
1565 attachment = READ_ONCE(bo->tbo.base.import_attach);
1568 seq_printf(m, " imported from %p", dma_buf);
1570 seq_printf(m, " exported as %p", dma_buf);
1572 amdgpu_bo_print_flag(m, bo, CPU_ACCESS_REQUIRED);
1573 amdgpu_bo_print_flag(m, bo, NO_CPU_ACCESS);
1574 amdgpu_bo_print_flag(m, bo, CPU_GTT_USWC);
1575 amdgpu_bo_print_flag(m, bo, VRAM_CLEARED);
1576 amdgpu_bo_print_flag(m, bo, VRAM_CONTIGUOUS);
1577 amdgpu_bo_print_flag(m, bo, VM_ALWAYS_VALID);
1578 amdgpu_bo_print_flag(m, bo, EXPLICIT_SYNC);