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drm/radeon: add a way to get and set initial buffer domains v2

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When passing buffers between processes, the receiving process needs to know
the original buffer domain, so that it doesn't accidentally move the buffer.

v2: reserve the buffer

Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Marek Olšák 2014-03-02 00:56:17 +01:00 • committed by Christian König
parent 14a9579ddb
commit bda72d58a2
6 changed files with 57 additions and 1 deletions
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3
drivers/gpu/drm/radeon/radeon_object.c
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@ -145,6 +145,9 @@ int radeon_bo_create(struct radeon_device *rdev,
bo->surface_reg = -1;
INIT_LIST_HEAD(&bo->list);
INIT_LIST_HEAD(&bo->va);
bo->initial_domain = domain & (RADEON_GEM_DOMAIN_VRAM |
RADEON_GEM_DOMAIN_GTT |
RADEON_GEM_DOMAIN_CPU);
radeon_ttm_placement_from_domain(bo, domain);
/* Kernel allocation are uninterruptible */
down_read(&rdev->pm.mclk_lock);