diff options
| author | Jerome Glisse <jglisse@redhat.com> | 2013-01-02 17:30:35 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-01-03 13:18:41 -0500 |
| commit | 64c56e8ce377842c8c8ff41054530480c7128c0b (patch) | |
| tree | e72cf12a47e467ff5bf664d57698ba510e227c81 /drivers/gpu/drm/radeon/si.c | |
| parent | eaaa6983ab2ccdf826c90838eb584211e0cadb76 (diff) | |
drm/radeon: reset dma engine on gpu reset (v2)
This try to reset the dma engine when performing gpu reset. Hopefully
bringing back the gpu dma engine in sane state.
v2: agd5f: fix dma reset on cayman/TN, add support for SI
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/si.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/si.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index 74d38452c5c..4bf17334927 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -2129,7 +2129,7 @@ bool si_gpu_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring) static int si_gpu_soft_reset(struct radeon_device *rdev) { struct evergreen_mc_save save; - u32 grbm_reset = 0; + u32 grbm_reset = 0, tmp; if (!(RREG32(GRBM_STATUS) & GUI_ACTIVE)) return 0; @@ -2159,6 +2159,22 @@ static int si_gpu_soft_reset(struct radeon_device *rdev) /* Disable CP parsing/prefetching */ WREG32(CP_ME_CNTL, CP_ME_HALT | CP_PFP_HALT | CP_CE_HALT); + /* dma0 */ + tmp = RREG32(DMA_RB_CNTL + DMA0_REGISTER_OFFSET); + tmp &= ~DMA_RB_ENABLE; + WREG32(DMA_RB_CNTL + DMA0_REGISTER_OFFSET, tmp); + + /* dma1 */ + tmp = RREG32(DMA_RB_CNTL + DMA1_REGISTER_OFFSET); + tmp &= ~DMA_RB_ENABLE; + WREG32(DMA_RB_CNTL + DMA1_REGISTER_OFFSET, tmp); + + /* Reset dma */ + WREG32(SRBM_SOFT_RESET, SOFT_RESET_DMA | SOFT_RESET_DMA1); + RREG32(SRBM_SOFT_RESET); + udelay(50); + WREG32(SRBM_SOFT_RESET, 0); + /* reset all the gfx blocks */ grbm_reset = (SOFT_RESET_CP | SOFT_RESET_CB | |