diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2013-01-14 20:04:39 +0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-01-15 18:06:38 +0400 |
| commit | 19fc42ed9950d5fe17089c0a928121047c882092 (patch) | |
| tree | 2cf4b53dcf43d870e6c1e9d3b7492381c1062005 /drivers/gpu/drm/radeon/ni.c | |
| parent | 7b4cf994e4c6ba48872bb25253cc393b7fb74c82 (diff) | |
| download | linux-19fc42ed9950d5fe17089c0a928121047c882092.tar.xz | |
drm/radeon: clear reset flags if engines are idle
Fixes a hard lock in the gpu reset code after the
rework for DMA support (0ecebb9e0d14e9948e0b1529883a776758117d6f
"drm/radeon: switch to a finer grained reset for evergreen")
due to not bailing before the MC shutdown if the relevant engines
are idle.
Discussion:
http://lists.freedesktop.org/archives/dri-devel/2013-January/032985.html
Reported-by: Eldad Zack <eldad@fogrefinery.com>
Tested-by: Eldad Zack <eldad@fogrefinery.com>
Acked-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/ni.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/ni.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index 896f1cbc58a5..59acabb45c9b 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -1409,6 +1409,12 @@ static int cayman_gpu_soft_reset(struct radeon_device *rdev, u32 reset_mask) { struct evergreen_mc_save save; + if (!(RREG32(GRBM_STATUS) & GUI_ACTIVE)) + reset_mask &= ~(RADEON_RESET_GFX | RADEON_RESET_COMPUTE); + + if (RREG32(DMA_STATUS_REG) & DMA_IDLE) + reset_mask &= ~RADEON_RESET_DMA; + if (reset_mask == 0) return 0; |