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| author | Friedrich Vock <friedrich.vock@gmx.de> | 2024-01-23 14:52:03 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-01-31 22:05:28 +0300 |
| commit | 9217b91c64587459362f211b0310e2bdaeb67719 (patch) | |
| tree | 61f8a299977490eedb29e2365a8adae02019e470 /drivers/gpu/drm/amd/amdgpu/vega20_ih.c | |
| parent | 615dd56ac5379f4239940be69139a33e79e59c67 (diff) | |
| download | linux-9217b91c64587459362f211b0310e2bdaeb67719.tar.xz | |
drm/amdgpu: Reset IH OVERFLOW_CLEAR bit
Allows us to detect subsequent IH ring buffer overflows as well.
Cc: Joshua Ashton <joshua@froggi.es>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Friedrich Vock <friedrich.vock@gmx.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/vega20_ih.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vega20_ih.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vega20_ih.c b/drivers/gpu/drm/amd/amdgpu/vega20_ih.c index ddfc6941f9d5..db66e6cccaf2 100644 --- a/drivers/gpu/drm/amd/amdgpu/vega20_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/vega20_ih.c @@ -421,6 +421,12 @@ static u32 vega20_ih_get_wptr(struct amdgpu_device *adev, tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); WREG32_NO_KIQ(ih_regs->ih_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_NO_KIQ(ih_regs->ih_rb_cntl, tmp); + out: return (wptr & ih->ptr_mask); } |