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drm/amdgpu: Implement BO size validation V2 

Validates BO size against each requested domain's total memory.

v2:
Make GTT size check a MUST to allow fall back to GTT.
Rmove redundant NULL check.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky 2017-11-10 18:35:56 -05:00 committed by Alex Deucher
parent fdd5faaa08
commit 79c631239a
1 changed files with 41 additions and 0 deletions
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41
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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@ -281,6 +281,44 @@ void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
*cpu_addr = NULL;
}
/* Validate bo size is bit bigger then the request domain */
static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
unsigned long size, u32 domain)
{
struct ttm_mem_type_manager *man = NULL;
/*
* If GTT is part of requested domains the check must succeed to
* allow fall back to GTT
*/
if (domain & AMDGPU_GEM_DOMAIN_GTT) {
man = &adev->mman.bdev.man[TTM_PL_TT];
if (size < (man->size << PAGE_SHIFT))
return true;
else
goto fail;
}
if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
man = &adev->mman.bdev.man[TTM_PL_VRAM];
if (size < (man->size << PAGE_SHIFT))
return true;
else
goto fail;
}
/* TODO add more domains checks, such as AMDGPU_GEM_DOMAIN_CPU */
return true;
fail:
DRM_ERROR("BO size %lu > total memory in domain: %llu\n", size,
man->size << PAGE_SHIFT);
return false;
}
static int amdgpu_bo_do_create(struct amdgpu_device *adev,
unsigned long size, int byte_align,
bool kernel, u32 domain, u64 flags,
@ -299,6 +337,9 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev,
page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
size = ALIGN(size, PAGE_SIZE);
if (!amdgpu_bo_validate_size(adev, size, domain))
return -ENOMEM;
if (kernel) {
type = ttm_bo_type_kernel;
} else if (sg) {