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drm/radeon: Maintain prime import/export refcount for BOs

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Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christopher James Halse Rogers <christopher.halse.rogers@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christopher James Halse Rogers 2017-04-03 13:35:22 +10:00 committed by Alex Deucher
parent 803d89ade4
commit 0d16d29940
2 changed files with 7 additions and 0 deletions
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1
drivers/gpu/drm/radeon/radeon.h
View File

@ -499,6 +499,7 @@ struct radeon_bo {
u32 tiling_flags;
u32 pitch;
int surface_reg;
unsigned prime_shared_count;
/* list of all virtual address to which this bo
* is associated to
*/

6
drivers/gpu/drm/radeon/radeon_prime.c
View File

@ -77,6 +77,7 @@ struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
list_add_tail(&bo->list, &rdev->gem.objects);
mutex_unlock(&rdev->gem.mutex);
bo->prime_shared_count = 1;
return &bo->gem_base;
}
@ -91,6 +92,9 @@ int radeon_gem_prime_pin(struct drm_gem_object *obj)
/* pin buffer into GTT */
ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
if (likely(ret == 0))
bo->prime_shared_count++;
radeon_bo_unreserve(bo);
return ret;
}
@ -105,6 +109,8 @@ void radeon_gem_prime_unpin(struct drm_gem_object *obj)
return;
radeon_bo_unpin(bo);
if (bo->prime_shared_count)
bo->prime_shared_count--;
radeon_bo_unreserve(bo);
}