diff options
Diffstat (limited to 'sys/dev/pci/drm/amd/amdgpu/iceland_ih.c')
| -rw-r--r-- | sys/dev/pci/drm/amd/amdgpu/iceland_ih.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/dev/pci/drm/amd/amdgpu/iceland_ih.c b/sys/dev/pci/drm/amd/amdgpu/iceland_ih.c index aecad530b10..2c02ae69883 100644 --- a/sys/dev/pci/drm/amd/amdgpu/iceland_ih.c +++ b/sys/dev/pci/drm/amd/amdgpu/iceland_ih.c @@ -215,6 +215,11 @@ static u32 iceland_ih_get_wptr(struct amdgpu_device *adev, tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); WREG32(mmIH_RB_CNTL, tmp); + /* Unset the CLEAR_OVERFLOW bit immediately so new overflows + * can be detected. + */ + tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 0); + WREG32(mmIH_RB_CNTL, tmp); out: return (wptr & ih->ptr_mask); |