| From | Andi Kleen <> | Subject | [PATCH] [120/139] drm/radeon/kms/evergreen: reset the grbm blocks at resume and init | Date | Tue, 1 Feb 2011 16:45:19 -0800 (PST) |
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2.6.35-longterm review patch. If anyone has any objections, please let me know.
------------------ From: Alex Deucher <alexdeucher@gmail.com>
commit 86f5c9edbb3bac37cc8cee6528a929005ba72aad upstream.
This fixes module reloading and resume as the gfx block seems to be left in a bad state in some cases.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andi Kleen <ak@linux.intel.com>
--- drivers/gpu/drm/radeon/evergreen.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
Index: linux-2.6.35.y/drivers/gpu/drm/radeon/evergreen.c =================================================================== --- linux-2.6.35.y.orig/drivers/gpu/drm/radeon/evergreen.c +++ linux-2.6.35.y/drivers/gpu/drm/radeon/evergreen.c @@ -2080,6 +2080,11 @@ int evergreen_resume(struct radeon_devic { int r; + /* reset the asic, the gfx blocks are often in a bad state + * after the driver is unloaded or after a resume + */ + if (radeon_asic_reset(rdev)) + dev_warn(rdev->dev, "GPU reset failed !\n"); /* Do not reset GPU before posting, on rv770 hw unlike on r500 hw, * posting will perform necessary task to bring back GPU into good * shape. @@ -2181,6 +2186,11 @@ int evergreen_init(struct radeon_device r = radeon_atombios_init(rdev); if (r) return r; + /* reset the asic, the gfx blocks are often in a bad state + * after the driver is unloaded or after a resume + */ + if (radeon_asic_reset(rdev)) + dev_warn(rdev->dev, "GPU reset failed !\n"); /* Post card if necessary */ if (!evergreen_card_posted(rdev)) { if (!rdev->bios) {
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