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Merge pull request #3827 from fritsch/kabini-backport

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Radeon: disable RADEON_GEM_GTT_WC for Kabini and Aruba
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Stefan Saraev 2015-01-23 11:46:09 +02:00
commit eb769979c6
1 changed files with 21 additions and 0 deletions
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packages/linux/patches/3.17.7/linux-999.06-radeon-upstream-fixes.patch vendored Normal file
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commit 108aa376ae52e634f6465424554fa9319c0a7a61
Author: Michel Dänzer <michel.daenzer@amd.com>
Date: Fri Oct 10 18:01:18 2014 +0900
drm/radeon: Ignore RADEON_GEM_GTT_WC on Kabini and Aruba
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 7f3b1e1..aea7c6e 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -235,6 +235,10 @@ int radeon_bo_create(struct radeon_device *rdev,
if (!(rdev->flags & RADEON_IS_PCIE))
bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
+ /* XXX: Write-combined CPU mappings of GTT seem broken on Kabini and Aruba */
+ if (rdev->family == CHIP_KABINI || rdev->family == CHIP_ARUBA)
+ bo->flags &= ~RADEON_GEM_GTT_WC;
+
radeon_ttm_placement_from_domain(bo, domain);
/* Kernel allocation are uninterruptible */
down_read(&rdev->pm.mclk_lock);