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authorAlex Deucher <alexander.deucher@amd.com>2013-08-30 08:58:20 -0400
committerAlex Deucher <alexander.deucher@amd.com>2013-08-30 16:31:15 -0400
commite5903d399a7b0e5c14673c1206f4aeec2859c730 (patch)
tree51c6167021389dc73657bc58ef851cea3417e662 /drivers/gpu/drm/radeon/rv770.c
parentf30df435ac6136787e65646881e62f12df2d71f6 (diff)
downloadblackbird-op-linux-e5903d399a7b0e5c14673c1206f4aeec2859c730.tar.gz
blackbird-op-linux-e5903d399a7b0e5c14673c1206f4aeec2859c730.zip
drm/radeon: fix init ordering for r600+
The vram scratch buffer needs to be initialized before the mc is programmed otherwise we program 0 as the GPU address of the default GPU fault page. In most cases we put vram at zero anyway and reserve a page for the legacy vga buffer so in practice this shouldn't cause any problems, but better to make it correct. Was changed in: 6fab3febf6d949b0a12b1e4e73db38e4a177a79e Reported-by: FrankR Huang <FrankR.Huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/rv770.c')
-rw-r--r--drivers/gpu/drm/radeon/rv770.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index b811296462a3..9f5846743c9e 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -1658,6 +1658,11 @@ static int rv770_startup(struct radeon_device *rdev)
/* enable pcie gen2 link */
rv770_pcie_gen2_enable(rdev);
+ /* scratch needs to be initialized before MC */
+ r = r600_vram_scratch_init(rdev);
+ if (r)
+ return r;
+
rv770_mc_program(rdev);
if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw) {
@@ -1668,10 +1673,6 @@ static int rv770_startup(struct radeon_device *rdev)
}
}
- r = r600_vram_scratch_init(rdev);
- if (r)
- return r;
-
if (rdev->flags & RADEON_IS_AGP) {
rv770_agp_enable(rdev);
} else {
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