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 int 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;
142 else if (adev->gmc.real_vram_size != adev->gmc.visible_vram_size)
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 * @bo_ptr: used to initialize BOs in structures
350 * @cpu_addr: optional CPU address mapping
352 * Creates a kernel BO at a specific offset in VRAM.
355 * 0 on success, negative error code otherwise.
357 int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
358 uint64_t offset, uint64_t size,
359 struct amdgpu_bo **bo_ptr, void **cpu_addr)
361 struct ttm_operation_ctx ctx = { false, false };
366 size = ALIGN(size, PAGE_SIZE);
368 r = amdgpu_bo_create_reserved(adev, size, PAGE_SIZE,
369 AMDGPU_GEM_DOMAIN_VRAM, bo_ptr, NULL,
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 WARN_ON(amdgpu_ttm_adev((*bo)->tbo.bdev)->in_suspend);
427 if (likely(amdgpu_bo_reserve(*bo, true) == 0)) {
429 amdgpu_bo_kunmap(*bo);
431 amdgpu_bo_unpin(*bo);
432 amdgpu_bo_unreserve(*bo);
443 /* Validate bo size is bit bigger then the request domain */
444 static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
445 unsigned long size, u32 domain)
447 struct ttm_resource_manager *man = NULL;
450 * If GTT is part of requested domains the check must succeed to
451 * allow fall back to GTT.
453 if (domain & AMDGPU_GEM_DOMAIN_GTT) {
454 man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
456 if (man && size < man->size)
459 WARN_ON_ONCE("GTT domain requested but GTT mem manager uninitialized");
461 } else if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
462 man = ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM);
464 if (man && size < man->size)
469 /* 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;
546 } else if (bp->domain & AMDGPU_GEM_DOMAIN_GDS) {
547 /* Both size and alignment must be a multiple of 4. */
548 page_align = ALIGN(bp->byte_align, 4);
549 size = ALIGN(size, 4) << PAGE_SHIFT;
551 /* Memory should be aligned at least to a page size. */
552 page_align = ALIGN(bp->byte_align, PAGE_SIZE) >> PAGE_SHIFT;
553 size = ALIGN(size, PAGE_SIZE);
556 if (!amdgpu_bo_validate_size(adev, size, bp->domain))
559 BUG_ON(bp->bo_ptr_size < sizeof(struct amdgpu_bo));
562 bo = kvzalloc(bp->bo_ptr_size, GFP_KERNEL);
565 drm_gem_private_object_init(adev_to_drm(adev), &bo->tbo.base, size);
567 bo->preferred_domains = bp->preferred_domain ? bp->preferred_domain :
569 bo->allowed_domains = bo->preferred_domains;
570 if (bp->type != ttm_bo_type_kernel &&
571 !(bp->flags & AMDGPU_GEM_CREATE_DISCARDABLE) &&
572 bo->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
573 bo->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
575 bo->flags = bp->flags;
577 /* bo->mem_id -1 means any partition */
578 bo->mem_id = bp->mem_id_plus1 - 1;
580 if (!amdgpu_bo_support_uswc(bo->flags))
581 bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
583 if (adev->ras_enabled)
584 bo->flags |= AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE;
586 bo->tbo.bdev = &adev->mman.bdev;
587 if (bp->domain & (AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA |
588 AMDGPU_GEM_DOMAIN_GDS))
589 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_CPU);
591 amdgpu_bo_placement_from_domain(bo, bp->domain);
592 if (bp->type == ttm_bo_type_kernel)
593 bo->tbo.priority = 1;
596 bp->destroy = &amdgpu_bo_destroy;
598 r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, bp->type,
599 &bo->placement, page_align, &ctx, NULL,
600 bp->resv, bp->destroy);
601 if (unlikely(r != 0))
604 if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
605 bo->tbo.resource->mem_type == TTM_PL_VRAM &&
606 amdgpu_bo_in_cpu_visible_vram(bo))
607 amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved,
610 amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved, 0);
612 if (bp->flags & AMDGPU_GEM_CREATE_VRAM_CLEARED &&
613 bo->tbo.resource->mem_type == TTM_PL_VRAM) {
614 struct dma_fence *fence;
616 r = amdgpu_fill_buffer(bo, 0, bo->tbo.base.resv, &fence);
620 dma_resv_add_fence(bo->tbo.base.resv, fence,
621 DMA_RESV_USAGE_KERNEL);
622 dma_fence_put(fence);
625 amdgpu_bo_unreserve(bo);
628 trace_amdgpu_bo_create(bo);
630 /* Treat CPU_ACCESS_REQUIRED only as a hint if given by UMD */
631 if (bp->type == ttm_bo_type_device)
632 bo->flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
638 dma_resv_unlock(bo->tbo.base.resv);
639 amdgpu_bo_unref(&bo);
644 * amdgpu_bo_create_user - create an &amdgpu_bo_user buffer object
645 * @adev: amdgpu device object
646 * @bp: parameters to be used for the buffer object
647 * @ubo_ptr: pointer to the buffer object pointer
649 * Create a BO to be used by user application;
652 * 0 for success or a negative error code on failure.
655 int amdgpu_bo_create_user(struct amdgpu_device *adev,
656 struct amdgpu_bo_param *bp,
657 struct amdgpu_bo_user **ubo_ptr)
659 struct amdgpu_bo *bo_ptr;
662 bp->bo_ptr_size = sizeof(struct amdgpu_bo_user);
663 bp->destroy = &amdgpu_bo_user_destroy;
664 r = amdgpu_bo_create(adev, bp, &bo_ptr);
668 *ubo_ptr = to_amdgpu_bo_user(bo_ptr);
673 * amdgpu_bo_create_vm - create an &amdgpu_bo_vm buffer object
674 * @adev: amdgpu device object
675 * @bp: parameters to be used for the buffer object
676 * @vmbo_ptr: pointer to the buffer object pointer
678 * Create a BO to be for GPUVM.
681 * 0 for success or a negative error code on failure.
684 int amdgpu_bo_create_vm(struct amdgpu_device *adev,
685 struct amdgpu_bo_param *bp,
686 struct amdgpu_bo_vm **vmbo_ptr)
688 struct amdgpu_bo *bo_ptr;
691 /* bo_ptr_size will be determined by the caller and it depends on
692 * num of amdgpu_vm_pt entries.
694 BUG_ON(bp->bo_ptr_size < sizeof(struct amdgpu_bo_vm));
695 r = amdgpu_bo_create(adev, bp, &bo_ptr);
699 *vmbo_ptr = to_amdgpu_bo_vm(bo_ptr);
700 INIT_LIST_HEAD(&(*vmbo_ptr)->shadow_list);
701 /* Set destroy callback to amdgpu_bo_vm_destroy after vmbo->shadow_list
704 bo_ptr->tbo.destroy = &amdgpu_bo_vm_destroy;
709 * amdgpu_bo_add_to_shadow_list - add a BO to the shadow list
711 * @vmbo: BO that will be inserted into the shadow list
713 * Insert a BO to the shadow list.
715 void amdgpu_bo_add_to_shadow_list(struct amdgpu_bo_vm *vmbo)
717 struct amdgpu_device *adev = amdgpu_ttm_adev(vmbo->bo.tbo.bdev);
719 mutex_lock(&adev->shadow_list_lock);
720 list_add_tail(&vmbo->shadow_list, &adev->shadow_list);
721 mutex_unlock(&adev->shadow_list_lock);
725 * amdgpu_bo_restore_shadow - restore an &amdgpu_bo shadow
727 * @shadow: &amdgpu_bo shadow to be restored
728 * @fence: dma_fence associated with the operation
730 * Copies a buffer object's shadow content back to the object.
731 * This is used for recovering a buffer from its shadow in case of a gpu
732 * reset where vram context may be lost.
735 * 0 for success or a negative error code on failure.
737 int amdgpu_bo_restore_shadow(struct amdgpu_bo *shadow, struct dma_fence **fence)
740 struct amdgpu_device *adev = amdgpu_ttm_adev(shadow->tbo.bdev);
741 struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
742 uint64_t shadow_addr, parent_addr;
744 shadow_addr = amdgpu_bo_gpu_offset(shadow);
745 parent_addr = amdgpu_bo_gpu_offset(shadow->parent);
747 return amdgpu_copy_buffer(ring, shadow_addr, parent_addr,
748 amdgpu_bo_size(shadow), NULL, fence,
753 * amdgpu_bo_kmap - map an &amdgpu_bo buffer object
754 * @bo: &amdgpu_bo buffer object to be mapped
755 * @ptr: kernel virtual address to be returned
757 * Calls ttm_bo_kmap() to set up the kernel virtual mapping; calls
758 * amdgpu_bo_kptr() to get the kernel virtual address.
761 * 0 for success or a negative error code on failure.
763 int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
768 if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
771 r = dma_resv_wait_timeout(bo->tbo.base.resv, DMA_RESV_USAGE_KERNEL,
772 false, MAX_SCHEDULE_TIMEOUT);
776 kptr = amdgpu_bo_kptr(bo);
783 r = ttm_bo_kmap(&bo->tbo, 0, PFN_UP(bo->tbo.base.size), &bo->kmap);
788 *ptr = amdgpu_bo_kptr(bo);
794 * amdgpu_bo_kptr - returns a kernel virtual address of the buffer object
795 * @bo: &amdgpu_bo buffer object
797 * Calls ttm_kmap_obj_virtual() to get the kernel virtual address
800 * the virtual address of a buffer object area.
802 void *amdgpu_bo_kptr(struct amdgpu_bo *bo)
806 return ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
810 * amdgpu_bo_kunmap - unmap an &amdgpu_bo buffer object
811 * @bo: &amdgpu_bo buffer object to be unmapped
813 * Unmaps a kernel map set up by amdgpu_bo_kmap().
815 void amdgpu_bo_kunmap(struct amdgpu_bo *bo)
818 ttm_bo_kunmap(&bo->kmap);
822 * amdgpu_bo_ref - reference an &amdgpu_bo buffer object
823 * @bo: &amdgpu_bo buffer object
825 * References the contained &ttm_buffer_object.
828 * a refcounted pointer to the &amdgpu_bo buffer object.
830 struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo)
835 ttm_bo_get(&bo->tbo);
840 * amdgpu_bo_unref - unreference an &amdgpu_bo buffer object
841 * @bo: &amdgpu_bo buffer object
843 * Unreferences the contained &ttm_buffer_object and clear the pointer
845 void amdgpu_bo_unref(struct amdgpu_bo **bo)
847 struct ttm_buffer_object *tbo;
858 * amdgpu_bo_pin_restricted - pin an &amdgpu_bo buffer object
859 * @bo: &amdgpu_bo buffer object to be pinned
860 * @domain: domain to be pinned to
861 * @min_offset: the start of requested address range
862 * @max_offset: the end of requested address range
864 * Pins the buffer object according to requested domain and address range. If
865 * the memory is unbound gart memory, binds the pages into gart table. Adjusts
866 * pin_count and pin_size accordingly.
868 * Pinning means to lock pages in memory along with keeping them at a fixed
869 * offset. It is required when a buffer can not be moved, for example, when
870 * a display buffer is being scanned out.
872 * Compared with amdgpu_bo_pin(), this function gives more flexibility on
873 * where to pin a buffer if there are specific restrictions on where a buffer
877 * 0 for success or a negative error code on failure.
879 int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
880 u64 min_offset, u64 max_offset)
882 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
883 struct ttm_operation_ctx ctx = { false, false };
886 if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm))
889 if (WARN_ON_ONCE(min_offset > max_offset))
892 /* Check domain to be pinned to against preferred domains */
893 if (bo->preferred_domains & domain)
894 domain = bo->preferred_domains & domain;
896 /* A shared bo cannot be migrated to VRAM */
897 if (bo->tbo.base.import_attach) {
898 if (domain & AMDGPU_GEM_DOMAIN_GTT)
899 domain = AMDGPU_GEM_DOMAIN_GTT;
904 if (bo->tbo.pin_count) {
905 uint32_t mem_type = bo->tbo.resource->mem_type;
906 uint32_t mem_flags = bo->tbo.resource->placement;
908 if (!(domain & amdgpu_mem_type_to_domain(mem_type)))
911 if ((mem_type == TTM_PL_VRAM) &&
912 (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS) &&
913 !(mem_flags & TTM_PL_FLAG_CONTIGUOUS))
916 ttm_bo_pin(&bo->tbo);
918 if (max_offset != 0) {
919 u64 domain_start = amdgpu_ttm_domain_start(adev,
921 WARN_ON_ONCE(max_offset <
922 (amdgpu_bo_gpu_offset(bo) - domain_start));
928 /* This assumes only APU display buffers are pinned with (VRAM|GTT).
929 * See function amdgpu_display_supported_domains()
931 domain = amdgpu_bo_get_preferred_domain(adev, domain);
933 if (bo->tbo.base.import_attach)
934 dma_buf_pin(bo->tbo.base.import_attach);
936 /* force to pin into visible video ram */
937 if (!(bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS))
938 bo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
939 amdgpu_bo_placement_from_domain(bo, domain);
940 for (i = 0; i < bo->placement.num_placement; i++) {
941 unsigned int fpfn, lpfn;
943 fpfn = min_offset >> PAGE_SHIFT;
944 lpfn = max_offset >> PAGE_SHIFT;
946 if (fpfn > bo->placements[i].fpfn)
947 bo->placements[i].fpfn = fpfn;
948 if (!bo->placements[i].lpfn ||
949 (lpfn && lpfn < bo->placements[i].lpfn))
950 bo->placements[i].lpfn = lpfn;
953 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
955 dev_err(adev->dev, "%p pin failed\n", bo);
959 ttm_bo_pin(&bo->tbo);
961 domain = amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type);
962 if (domain == AMDGPU_GEM_DOMAIN_VRAM) {
963 atomic64_add(amdgpu_bo_size(bo), &adev->vram_pin_size);
964 atomic64_add(amdgpu_vram_mgr_bo_visible_size(bo),
965 &adev->visible_pin_size);
966 } else if (domain == AMDGPU_GEM_DOMAIN_GTT) {
967 atomic64_add(amdgpu_bo_size(bo), &adev->gart_pin_size);
975 * amdgpu_bo_pin - pin an &amdgpu_bo buffer object
976 * @bo: &amdgpu_bo buffer object to be pinned
977 * @domain: domain to be pinned to
979 * A simple wrapper to amdgpu_bo_pin_restricted().
980 * Provides a simpler API for buffers that do not have any strict restrictions
981 * on where a buffer must be located.
984 * 0 for success or a negative error code on failure.
986 int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain)
988 bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
989 return amdgpu_bo_pin_restricted(bo, domain, 0, 0);
993 * amdgpu_bo_unpin - unpin an &amdgpu_bo buffer object
994 * @bo: &amdgpu_bo buffer object to be unpinned
996 * Decreases the pin_count, and clears the flags if pin_count reaches 0.
997 * Changes placement and pin size accordingly.
1000 * 0 for success or a negative error code on failure.
1002 void amdgpu_bo_unpin(struct amdgpu_bo *bo)
1004 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
1006 ttm_bo_unpin(&bo->tbo);
1007 if (bo->tbo.pin_count)
1010 if (bo->tbo.base.import_attach)
1011 dma_buf_unpin(bo->tbo.base.import_attach);
1013 if (bo->tbo.resource->mem_type == TTM_PL_VRAM) {
1014 atomic64_sub(amdgpu_bo_size(bo), &adev->vram_pin_size);
1015 atomic64_sub(amdgpu_vram_mgr_bo_visible_size(bo),
1016 &adev->visible_pin_size);
1017 } else if (bo->tbo.resource->mem_type == TTM_PL_TT) {
1018 atomic64_sub(amdgpu_bo_size(bo), &adev->gart_pin_size);
1022 static const char * const amdgpu_vram_names[] = {
1039 * amdgpu_bo_init - initialize memory manager
1040 * @adev: amdgpu device object
1042 * Calls amdgpu_ttm_init() to initialize amdgpu memory manager.
1045 * 0 for success or a negative error code on failure.
1047 int amdgpu_bo_init(struct amdgpu_device *adev)
1049 /* On A+A platform, VRAM can be mapped as WB */
1050 if (!adev->gmc.xgmi.connected_to_cpu && !adev->gmc.is_app_apu) {
1051 /* reserve PAT memory space to WC for VRAM */
1052 int r = arch_io_reserve_memtype_wc(adev->gmc.aper_base,
1053 adev->gmc.aper_size);
1056 DRM_ERROR("Unable to set WC memtype for the aperture base\n");
1060 /* Add an MTRR for the VRAM */
1061 adev->gmc.vram_mtrr = arch_phys_wc_add(adev->gmc.aper_base,
1062 adev->gmc.aper_size);
1065 DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
1066 adev->gmc.mc_vram_size >> 20,
1067 (unsigned long long)adev->gmc.aper_size >> 20);
1068 DRM_INFO("RAM width %dbits %s\n",
1069 adev->gmc.vram_width, amdgpu_vram_names[adev->gmc.vram_type]);
1070 return amdgpu_ttm_init(adev);
1074 * amdgpu_bo_fini - tear down memory manager
1075 * @adev: amdgpu device object
1077 * Reverses amdgpu_bo_init() to tear down memory manager.
1079 void amdgpu_bo_fini(struct amdgpu_device *adev)
1083 amdgpu_ttm_fini(adev);
1085 if (drm_dev_enter(adev_to_drm(adev), &idx)) {
1086 if (!adev->gmc.xgmi.connected_to_cpu && !adev->gmc.is_app_apu) {
1087 arch_phys_wc_del(adev->gmc.vram_mtrr);
1088 arch_io_free_memtype_wc(adev->gmc.aper_base, adev->gmc.aper_size);
1095 * amdgpu_bo_set_tiling_flags - set tiling flags
1096 * @bo: &amdgpu_bo buffer object
1097 * @tiling_flags: new flags
1099 * Sets buffer object's tiling flags with the new one. Used by GEM ioctl or
1100 * kernel driver to set the tiling flags on a buffer.
1103 * 0 for success or a negative error code on failure.
1105 int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags)
1107 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
1108 struct amdgpu_bo_user *ubo;
1110 BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
1111 if (adev->family <= AMDGPU_FAMILY_CZ &&
1112 AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT) > 6)
1115 ubo = to_amdgpu_bo_user(bo);
1116 ubo->tiling_flags = tiling_flags;
1121 * amdgpu_bo_get_tiling_flags - get tiling flags
1122 * @bo: &amdgpu_bo buffer object
1123 * @tiling_flags: returned flags
1125 * Gets buffer object's tiling flags. Used by GEM ioctl or kernel driver to
1126 * set the tiling flags on a buffer.
1128 void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags)
1130 struct amdgpu_bo_user *ubo;
1132 BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
1133 dma_resv_assert_held(bo->tbo.base.resv);
1134 ubo = to_amdgpu_bo_user(bo);
1137 *tiling_flags = ubo->tiling_flags;
1141 * amdgpu_bo_set_metadata - set metadata
1142 * @bo: &amdgpu_bo buffer object
1143 * @metadata: new metadata
1144 * @metadata_size: size of the new metadata
1145 * @flags: flags of the new metadata
1147 * Sets buffer object's metadata, its size and flags.
1148 * Used via GEM ioctl.
1151 * 0 for success or a negative error code on failure.
1153 int amdgpu_bo_set_metadata(struct amdgpu_bo *bo, void *metadata,
1154 u32 metadata_size, uint64_t flags)
1156 struct amdgpu_bo_user *ubo;
1159 BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
1160 ubo = to_amdgpu_bo_user(bo);
1161 if (!metadata_size) {
1162 if (ubo->metadata_size) {
1163 kfree(ubo->metadata);
1164 ubo->metadata = NULL;
1165 ubo->metadata_size = 0;
1170 if (metadata == NULL)
1173 buffer = kmemdup(metadata, metadata_size, GFP_KERNEL);
1177 kfree(ubo->metadata);
1178 ubo->metadata_flags = flags;
1179 ubo->metadata = buffer;
1180 ubo->metadata_size = metadata_size;
1186 * amdgpu_bo_get_metadata - get metadata
1187 * @bo: &amdgpu_bo buffer object
1188 * @buffer: returned metadata
1189 * @buffer_size: size of the buffer
1190 * @metadata_size: size of the returned metadata
1191 * @flags: flags of the returned metadata
1193 * Gets buffer object's metadata, its size and flags. buffer_size shall not be
1194 * less than metadata_size.
1195 * Used via GEM ioctl.
1198 * 0 for success or a negative error code on failure.
1200 int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
1201 size_t buffer_size, uint32_t *metadata_size,
1204 struct amdgpu_bo_user *ubo;
1206 if (!buffer && !metadata_size)
1209 BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
1210 ubo = to_amdgpu_bo_user(bo);
1212 *metadata_size = ubo->metadata_size;
1215 if (buffer_size < ubo->metadata_size)
1218 if (ubo->metadata_size)
1219 memcpy(buffer, ubo->metadata, ubo->metadata_size);
1223 *flags = ubo->metadata_flags;
1229 * amdgpu_bo_move_notify - notification about a memory move
1230 * @bo: pointer to a buffer object
1231 * @evict: if this move is evicting the buffer from the graphics address space
1232 * @new_mem: new information of the bufer object
1234 * Marks the corresponding &amdgpu_bo buffer object as invalid, also performs
1236 * TTM driver callback which is called when ttm moves a buffer.
1238 void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
1240 struct ttm_resource *new_mem)
1242 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
1243 struct amdgpu_bo *abo;
1244 struct ttm_resource *old_mem = bo->resource;
1246 if (!amdgpu_bo_is_amdgpu_bo(bo))
1249 abo = ttm_to_amdgpu_bo(bo);
1250 amdgpu_vm_bo_invalidate(adev, abo, evict);
1252 amdgpu_bo_kunmap(abo);
1254 if (abo->tbo.base.dma_buf && !abo->tbo.base.import_attach &&
1255 bo->resource->mem_type != TTM_PL_SYSTEM)
1256 dma_buf_move_notify(abo->tbo.base.dma_buf);
1258 /* remember the eviction */
1260 atomic64_inc(&adev->num_evictions);
1262 /* update statistics */
1266 /* move_notify is called before move happens */
1267 trace_amdgpu_bo_move(abo, new_mem->mem_type, old_mem->mem_type);
1270 void amdgpu_bo_get_memory(struct amdgpu_bo *bo,
1271 struct amdgpu_mem_stats *stats)
1273 unsigned int domain;
1274 uint64_t size = amdgpu_bo_size(bo);
1276 domain = amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type);
1278 case AMDGPU_GEM_DOMAIN_VRAM:
1279 stats->vram += size;
1280 if (amdgpu_bo_in_cpu_visible_vram(bo))
1281 stats->visible_vram += size;
1283 case AMDGPU_GEM_DOMAIN_GTT:
1286 case AMDGPU_GEM_DOMAIN_CPU:
1292 if (bo->preferred_domains & AMDGPU_GEM_DOMAIN_VRAM) {
1293 stats->requested_vram += size;
1294 if (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
1295 stats->requested_visible_vram += size;
1297 if (domain != AMDGPU_GEM_DOMAIN_VRAM) {
1298 stats->evicted_vram += size;
1299 if (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
1300 stats->evicted_visible_vram += size;
1302 } else if (bo->preferred_domains & AMDGPU_GEM_DOMAIN_GTT) {
1303 stats->requested_gtt += size;
1308 * amdgpu_bo_release_notify - notification about a BO being released
1309 * @bo: pointer to a buffer object
1311 * Wipes VRAM buffers whose contents should not be leaked before the
1312 * memory is released.
1314 void amdgpu_bo_release_notify(struct ttm_buffer_object *bo)
1316 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
1317 struct dma_fence *fence = NULL;
1318 struct amdgpu_bo *abo;
1321 if (!amdgpu_bo_is_amdgpu_bo(bo))
1324 abo = ttm_to_amdgpu_bo(bo);
1327 amdgpu_amdkfd_release_notify(abo);
1329 /* We only remove the fence if the resv has individualized. */
1330 WARN_ON_ONCE(bo->type == ttm_bo_type_kernel
1331 && bo->base.resv != &bo->base._resv);
1332 if (bo->base.resv == &bo->base._resv)
1333 amdgpu_amdkfd_remove_fence_on_pt_pd_bos(abo);
1335 if (!bo->resource || bo->resource->mem_type != TTM_PL_VRAM ||
1336 !(abo->flags & AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE) ||
1337 adev->in_suspend || drm_dev_is_unplugged(adev_to_drm(adev)))
1340 if (WARN_ON_ONCE(!dma_resv_trylock(bo->base.resv)))
1343 r = amdgpu_fill_buffer(abo, AMDGPU_POISON, bo->base.resv, &fence);
1345 amdgpu_bo_fence(abo, fence, false);
1346 dma_fence_put(fence);
1349 dma_resv_unlock(bo->base.resv);
1353 * amdgpu_bo_fault_reserve_notify - notification about a memory fault
1354 * @bo: pointer to a buffer object
1356 * Notifies the driver we are taking a fault on this BO and have reserved it,
1357 * also performs bookkeeping.
1358 * TTM driver callback for dealing with vm faults.
1361 * 0 for success or a negative error code on failure.
1363 vm_fault_t amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
1365 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
1366 struct ttm_operation_ctx ctx = { false, false };
1367 struct amdgpu_bo *abo = ttm_to_amdgpu_bo(bo);
1370 /* Remember that this BO was accessed by the CPU */
1371 abo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
1373 if (bo->resource->mem_type != TTM_PL_VRAM)
1376 if (amdgpu_bo_in_cpu_visible_vram(abo))
1379 /* Can't move a pinned BO to visible VRAM */
1380 if (abo->tbo.pin_count > 0)
1381 return VM_FAULT_SIGBUS;
1383 /* hurrah the memory is not visible ! */
1384 atomic64_inc(&adev->num_vram_cpu_page_faults);
1385 amdgpu_bo_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM |
1386 AMDGPU_GEM_DOMAIN_GTT);
1388 /* Avoid costly evictions; only set GTT as a busy placement */
1389 abo->placement.num_busy_placement = 1;
1390 abo->placement.busy_placement = &abo->placements[1];
1392 r = ttm_bo_validate(bo, &abo->placement, &ctx);
1393 if (unlikely(r == -EBUSY || r == -ERESTARTSYS))
1394 return VM_FAULT_NOPAGE;
1395 else if (unlikely(r))
1396 return VM_FAULT_SIGBUS;
1398 /* this should never happen */
1399 if (bo->resource->mem_type == TTM_PL_VRAM &&
1400 !amdgpu_bo_in_cpu_visible_vram(abo))
1401 return VM_FAULT_SIGBUS;
1403 ttm_bo_move_to_lru_tail_unlocked(bo);
1408 * amdgpu_bo_fence - add fence to buffer object
1410 * @bo: buffer object in question
1411 * @fence: fence to add
1412 * @shared: true if fence should be added shared
1415 void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
1418 struct dma_resv *resv = bo->tbo.base.resv;
1421 r = dma_resv_reserve_fences(resv, 1);
1423 /* As last resort on OOM we block for the fence */
1424 dma_fence_wait(fence, false);
1428 dma_resv_add_fence(resv, fence, shared ? DMA_RESV_USAGE_READ :
1429 DMA_RESV_USAGE_WRITE);
1433 * amdgpu_bo_sync_wait_resv - Wait for BO reservation fences
1435 * @adev: amdgpu device pointer
1436 * @resv: reservation object to sync to
1437 * @sync_mode: synchronization mode
1438 * @owner: fence owner
1439 * @intr: Whether the wait is interruptible
1441 * Extract the fences from the reservation object and waits for them to finish.
1444 * 0 on success, errno otherwise.
1446 int amdgpu_bo_sync_wait_resv(struct amdgpu_device *adev, struct dma_resv *resv,
1447 enum amdgpu_sync_mode sync_mode, void *owner,
1450 struct amdgpu_sync sync;
1453 amdgpu_sync_create(&sync);
1454 amdgpu_sync_resv(adev, &sync, resv, sync_mode, owner);
1455 r = amdgpu_sync_wait(&sync, intr);
1456 amdgpu_sync_free(&sync);
1461 * amdgpu_bo_sync_wait - Wrapper for amdgpu_bo_sync_wait_resv
1462 * @bo: buffer object to wait for
1463 * @owner: fence owner
1464 * @intr: Whether the wait is interruptible
1466 * Wrapper to wait for fences in a BO.
1468 * 0 on success, errno otherwise.
1470 int amdgpu_bo_sync_wait(struct amdgpu_bo *bo, void *owner, bool intr)
1472 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
1474 return amdgpu_bo_sync_wait_resv(adev, bo->tbo.base.resv,
1475 AMDGPU_SYNC_NE_OWNER, owner, intr);
1479 * amdgpu_bo_gpu_offset - return GPU offset of bo
1480 * @bo: amdgpu object for which we query the offset
1482 * Note: object should either be pinned or reserved when calling this
1483 * function, it might be useful to add check for this for debugging.
1486 * current GPU offset of the object.
1488 u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
1490 WARN_ON_ONCE(bo->tbo.resource->mem_type == TTM_PL_SYSTEM);
1491 WARN_ON_ONCE(!dma_resv_is_locked(bo->tbo.base.resv) &&
1492 !bo->tbo.pin_count && bo->tbo.type != ttm_bo_type_kernel);
1493 WARN_ON_ONCE(bo->tbo.resource->start == AMDGPU_BO_INVALID_OFFSET);
1494 WARN_ON_ONCE(bo->tbo.resource->mem_type == TTM_PL_VRAM &&
1495 !(bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS));
1497 return amdgpu_bo_gpu_offset_no_check(bo);
1501 * amdgpu_bo_gpu_offset_no_check - return GPU offset of bo
1502 * @bo: amdgpu object for which we query the offset
1505 * current GPU offset of the object without raising warnings.
1507 u64 amdgpu_bo_gpu_offset_no_check(struct amdgpu_bo *bo)
1509 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
1512 offset = (bo->tbo.resource->start << PAGE_SHIFT) +
1513 amdgpu_ttm_domain_start(adev, bo->tbo.resource->mem_type);
1515 return amdgpu_gmc_sign_extend(offset);
1519 * amdgpu_bo_get_preferred_domain - get preferred domain
1520 * @adev: amdgpu device object
1521 * @domain: allowed :ref:`memory domains <amdgpu_memory_domains>`
1524 * Which of the allowed domains is preferred for allocating the BO.
1526 uint32_t amdgpu_bo_get_preferred_domain(struct amdgpu_device *adev,
1529 if ((domain == (AMDGPU_GEM_DOMAIN_VRAM | AMDGPU_GEM_DOMAIN_GTT)) &&
1530 ((adev->asic_type == CHIP_CARRIZO) || (adev->asic_type == CHIP_STONEY))) {
1531 domain = AMDGPU_GEM_DOMAIN_VRAM;
1532 if (adev->gmc.real_vram_size <= AMDGPU_SG_THRESHOLD)
1533 domain = AMDGPU_GEM_DOMAIN_GTT;
1538 #if defined(CONFIG_DEBUG_FS)
1539 #define amdgpu_bo_print_flag(m, bo, flag) \
1541 if (bo->flags & (AMDGPU_GEM_CREATE_ ## flag)) { \
1542 seq_printf((m), " " #flag); \
1547 * amdgpu_bo_print_info - print BO info in debugfs file
1549 * @id: Index or Id of the BO
1550 * @bo: Requested BO for printing info
1553 * Print BO information in debugfs file
1556 * Size of the BO in bytes.
1558 u64 amdgpu_bo_print_info(int id, struct amdgpu_bo *bo, struct seq_file *m)
1560 struct dma_buf_attachment *attachment;
1561 struct dma_buf *dma_buf;
1562 unsigned int domain;
1563 const char *placement;
1564 unsigned int pin_count;
1567 domain = amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type);
1569 case AMDGPU_GEM_DOMAIN_VRAM:
1572 case AMDGPU_GEM_DOMAIN_GTT:
1575 case AMDGPU_GEM_DOMAIN_CPU:
1581 size = amdgpu_bo_size(bo);
1582 seq_printf(m, "\t\t0x%08x: %12lld byte %s",
1583 id, size, placement);
1585 pin_count = READ_ONCE(bo->tbo.pin_count);
1587 seq_printf(m, " pin count %d", pin_count);
1589 dma_buf = READ_ONCE(bo->tbo.base.dma_buf);
1590 attachment = READ_ONCE(bo->tbo.base.import_attach);
1593 seq_printf(m, " imported from ino:%lu", file_inode(dma_buf->file)->i_ino);
1595 seq_printf(m, " exported as ino:%lu", file_inode(dma_buf->file)->i_ino);
1597 amdgpu_bo_print_flag(m, bo, CPU_ACCESS_REQUIRED);
1598 amdgpu_bo_print_flag(m, bo, NO_CPU_ACCESS);
1599 amdgpu_bo_print_flag(m, bo, CPU_GTT_USWC);
1600 amdgpu_bo_print_flag(m, bo, VRAM_CLEARED);
1601 amdgpu_bo_print_flag(m, bo, VRAM_CONTIGUOUS);
1602 amdgpu_bo_print_flag(m, bo, VM_ALWAYS_VALID);
1603 amdgpu_bo_print_flag(m, bo, EXPLICIT_SYNC);