[PATCH 1/2] drm/amdgpu/atomfirmware: add function to update engine hang status

[Alex Deucher]

On Fri, May 5, 2017 at 10:27 AM, Alex Deucher <alexdeucher at gmail.com> wrote:
> Update the scratch reg for when the engine is hung.
>
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>

ping on this series.

Alex

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | 13 +++++++++++++
>  drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h |  2 ++
>  2 files changed, 15 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
> index d735cd1..4bdda56 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
> @@ -88,6 +88,19 @@ void amdgpu_atomfirmware_scratch_regs_restore(struct amdgpu_device *adev)
>                 WREG32(adev->bios_scratch_reg_offset + i, adev->bios_scratch[i]);
>  }
>
> +void amdgpu_atomfirmware_scratch_regs_engine_hung(struct amdgpu_device *adev,
> +                                                 bool hung)
> +{
> +       u32 tmp = RREG32(adev->bios_scratch_reg_offset + 3);
> +
> +       if (hung)
> +               tmp |= ATOM_S3_ASIC_GUI_ENGINE_HUNG;
> +       else
> +               tmp &= ~ATOM_S3_ASIC_GUI_ENGINE_HUNG;
> +
> +       WREG32(adev->bios_scratch_reg_offset + 3, tmp);
> +}
> +
>  int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev)
>  {
>         struct atom_context *ctx = adev->mode_info.atom_context;
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h
> index d0c4dcd..a2c3ebe 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h
> @@ -28,6 +28,8 @@ bool amdgpu_atomfirmware_gpu_supports_virtualization(struct amdgpu_device *adev)
>  void amdgpu_atomfirmware_scratch_regs_init(struct amdgpu_device *adev);
>  void amdgpu_atomfirmware_scratch_regs_save(struct amdgpu_device *adev);
>  void amdgpu_atomfirmware_scratch_regs_restore(struct amdgpu_device *adev);
> +void amdgpu_atomfirmware_scratch_regs_engine_hung(struct amdgpu_device *adev,
> +                                                 bool hung);
>  int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev);
>
>  #endif
> --
> 2.5.5
>