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| author | Dave Airlie <airlied@redhat.com> | 2010-02-05 09:00:07 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-02-11 12:11:32 +0300 |
| commit | 82568565683b4991964a5fc89a9ca0c7122818e8 (patch) | |
| tree | 3c04fa40a00a440a322c802abd41175e90b71e21 /drivers/gpu/drm/radeon/rs400.c | |
| parent | e34398952e056bbd99f9099fae77be26e5c6aa78 (diff) | |
| download | linux-82568565683b4991964a5fc89a9ca0c7122818e8.tar.xz | |
drm/radeon/kms: set gart pages to invalid on unbind and point to dummy page
this uses a new entrypoint to invalidate gart entries instead of using 0.
Changed to rather than pointing to 0 address point empty entry to dummy
page. This might help to avoid hard lockup if for some wrong
reasons GPU try to access unmapped GART entry.
I'm not 100% sure this is going to work, we probably need to allocate
a dummy page and point all the GTT entries at it similiar to what AGP does.
but we can test this first I suppose.
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/rs400.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/rs400.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c index 287fcebfb4e6..1e4582e27c14 100644 --- a/drivers/gpu/drm/radeon/rs400.c +++ b/drivers/gpu/drm/radeon/rs400.c @@ -113,6 +113,7 @@ int rs400_gart_enable(struct radeon_device *rdev) uint32_t size_reg; uint32_t tmp; + radeon_gart_restore(rdev); tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH); tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS; WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp); |