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drm/radeon: use cached memory when evicting for vram on non agp

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Force the use of cached memory when evicting from vram on non agp
hardware. Also force write combine on agp hw. This is to insure
the minimum cache type change when allocating memory and improving
memory eviction especialy on pci/pcie hw.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
This commit is contained in:
Jerome Glisse 2012-11-28 13:47:55 -05:00 committed by Alex Deucher
parent 57f5708383
commit 0d0b3e7443
1 changed files with 14 additions and 4 deletions
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18
drivers/gpu/drm/radeon/radeon_object.c
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@ -88,10 +88,20 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
if (domain & RADEON_GEM_DOMAIN_VRAM)
rbo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
TTM_PL_FLAG_VRAM;
if (domain & RADEON_GEM_DOMAIN_GTT)
rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
if (domain & RADEON_GEM_DOMAIN_CPU)
rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
if (domain & RADEON_GEM_DOMAIN_GTT) {
if (rbo->rdev->flags & RADEON_IS_AGP) {
rbo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_TT;
} else {
rbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_TT;
}
}
if (domain & RADEON_GEM_DOMAIN_CPU) {
if (rbo->rdev->flags & RADEON_IS_AGP) {
rbo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_TT;
} else {
rbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_TT;
}
}
if (!c)
rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
rbo->placement.num_placement = c;