[PATCH] drm/amdgpu: add ip_block_mask user option for static builds

[Michel Dänzer]

On 2018-08-21 11:53 a.m., Shirish S wrote:
> This patch extends amdgpu.ip_block_mask to a Kconfig option as
> well, that can be altered by user at build time for OS' that
> do not permit passing dyanamic loading of amdgpu driver and also
> passing command line arguments.
> 
> Note: This option to be used purely for debugging purposes and
> amdgpu driver is not productised/tested extensively with any of its
> blokcs disabled.
> The default value of this option enables all IP's.
> 
> Signed-off-by: Shirish S <shirish.s at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/Kconfig      | 7 +++++++
>  drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 +-
>  2 files changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/Kconfig b/drivers/gpu/drm/amd/amdgpu/Kconfig
> index e8af1f5..3f94ae5 100644
> --- a/drivers/gpu/drm/amd/amdgpu/Kconfig
> +++ b/drivers/gpu/drm/amd/amdgpu/Kconfig
> @@ -23,6 +23,13 @@ config DRM_AMDGPU_CIK
>  
>  	  radeon.cik_support=0 amdgpu.cik_support=1
>  
> +config DRM_AMDGPU_IP_BLOCK_MASK
> +	hex "AMDGPU IP Block Mask"
> +	depends on DRM_AMDGPU
> +	default "0xffffffff"
> +	help
> +	  Modify this option to disable any IP block of amdgpu.

As I said before, IMO this doesn't belong upstream, as it's a workaround
for a downstream issue.


Also, this isn't generally usable on a system with multiple GPUs
supported by amdgpu, as the same block mask value may have different
effects with different GPUs.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer