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drm/radeon/kms: allocate vram scratch page on 6xx+

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The vram scratch was originally only used on some 7xx asics
to work around a hw bug.  Allocate the scratch page on all 6xx+
radeons and set the MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR to point
to it.  We shouldn't ever hit it since we limit the system
aperture to vram or vram and AGP, but better safe than sorry.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2011-10-28 10:30:02 -04:00
committed by Dave Airlie
parent 996d5c5900
commit 16cdf04d30
5 changed files with 80 additions and 57 deletions
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5
drivers/gpu/drm/radeon/ni.c
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@@ -1361,6 +1361,10 @@ static int cayman_startup(struct radeon_device *rdev)
return r;
}
r = r600_vram_scratch_init(rdev);
if (r)
return r;
evergreen_mc_program(rdev);
r = cayman_pcie_gart_enable(rdev);
if (r)
@@ -1556,6 +1560,7 @@ void cayman_fini(struct radeon_device *rdev)
radeon_ib_pool_fini(rdev);
radeon_irq_kms_fini(rdev);
cayman_pcie_gart_fini(rdev);
r600_vram_scratch_fini(rdev);
radeon_gem_fini(rdev);
radeon_fence_driver_fini(rdev);
radeon_bo_fini(rdev);