diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2024-08-14 10:28:24 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-08-16 14:27:04 -0400 |
| commit | 2dc3851ef7d9c5439ea8e9623fc36878f3b40649 (patch) | |
| tree | edb35eef6bc66129238d8e6e37aa11298a391610 /drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c | |
| parent | 1a2103d68547407a098c237d7cade79b4ad2b88f (diff) | |
drm/amdgpu/sdma5.2: limit wptr workaround to sdma 5.2.1
The workaround seems to cause stability issues on other
SDMA 5.2.x IPs.
Fixes: a03ebf116303 ("drm/amdgpu/sdma5.2: Update wptr registers as well as doorbell")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3556
Acked-by: Ruijing Dong <ruijing.dong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c index d740255edf5a..bc9b240a3488 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c @@ -225,14 +225,16 @@ static void sdma_v5_2_ring_set_wptr(struct amdgpu_ring *ring) DRM_DEBUG("calling WDOORBELL64(0x%08x, 0x%016llx)\n", ring->doorbell_index, ring->wptr << 2); WDOORBELL64(ring->doorbell_index, ring->wptr << 2); - /* SDMA seems to miss doorbells sometimes when powergating kicks in. - * Updating the wptr directly will wake it. This is only safe because - * we disallow gfxoff in begin_use() and then allow it again in end_use(). - */ - WREG32(sdma_v5_2_get_reg_offset(adev, ring->me, mmSDMA0_GFX_RB_WPTR), - lower_32_bits(ring->wptr << 2)); - WREG32(sdma_v5_2_get_reg_offset(adev, ring->me, mmSDMA0_GFX_RB_WPTR_HI), - upper_32_bits(ring->wptr << 2)); + if (amdgpu_ip_version(adev, SDMA0_HWIP, 0) == IP_VERSION(5, 2, 1)) { + /* SDMA seems to miss doorbells sometimes when powergating kicks in. + * Updating the wptr directly will wake it. This is only safe because + * we disallow gfxoff in begin_use() and then allow it again in end_use(). + */ + WREG32(sdma_v5_2_get_reg_offset(adev, ring->me, mmSDMA0_GFX_RB_WPTR), + lower_32_bits(ring->wptr << 2)); + WREG32(sdma_v5_2_get_reg_offset(adev, ring->me, mmSDMA0_GFX_RB_WPTR_HI), + upper_32_bits(ring->wptr << 2)); + } } else { DRM_DEBUG("Not using doorbell -- " "mmSDMA%i_GFX_RB_WPTR == 0x%08x " |