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path: root/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
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Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
index 8e6bf548d689..76cbb1d08bce 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
@@ -1784,6 +1784,19 @@ void amdgpu_atombios_scratch_regs_restore(struct amdgpu_device *adev)
WREG32(mmBIOS_SCRATCH_0 + i, adev->bios_scratch[i]);
}
+void amdgpu_atombios_scratch_regs_engine_hung(struct amdgpu_device *adev,
+ bool hung)
+{
+ u32 tmp = RREG32(mmBIOS_SCRATCH_3);
+
+ if (hung)
+ tmp |= ATOM_S3_ASIC_GUI_ENGINE_HUNG;
+ else
+ tmp &= ~ATOM_S3_ASIC_GUI_ENGINE_HUNG;
+
+ WREG32(mmBIOS_SCRATCH_3, tmp);
+}
+
/* Atom needs data in little endian format
* so swap as appropriate when copying data to
* or from atom. Note that atom operates on