Re: [PATCH] drm/amdgpu: Use MEC FW with SJT on gfx_v9_4_3

["Lazar, Lijo" <lijo.lazar@amd.com>]

On 11/19/2024 9:07 PM, Yuan Feng wrote:
> On SRIOV, guest driver and host driver might deploy different versions
> of MEC firmware binaries that lead to potential compability issues cause
> system hang. To solve this, host and guest deploy MEC fw with two level jump
> table.
> 
> Signed-off-by: Yuan Feng <yfeng1@amd.com>

Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>

Thanks,
Lijo

> ---
>  drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
> index 03654bfda58a..6011332cce92 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
> @@ -45,6 +45,7 @@ MODULE_FIRMWARE("amdgpu/gc_9_4_3_mec.bin");
>  MODULE_FIRMWARE("amdgpu/gc_9_4_4_mec.bin");
>  MODULE_FIRMWARE("amdgpu/gc_9_4_3_rlc.bin");
>  MODULE_FIRMWARE("amdgpu/gc_9_4_4_rlc.bin");
> +MODULE_FIRMWARE("amdgpu/gc_9_4_3_sjt_mec.bin");
>  
>  #define GFX9_MEC_HPD_SIZE 4096
>  #define RLCG_UCODE_LOADING_START_ADDRESS 0x00002000L
> @@ -574,7 +575,11 @@ static int gfx_v9_4_3_init_cp_compute_microcode(struct amdgpu_device *adev,
>  {
>  	int err;
>  
> -	err = amdgpu_ucode_request(adev, &adev->gfx.mec_fw,
> +	if (amdgpu_sriov_vf(adev))
> +		err = amdgpu_ucode_request(adev, &adev->gfx.mec_fw,
> +				   "amdgpu/%s_sjt_mec.bin", chip_name);
> +	else
> +		err = amdgpu_ucode_request(adev, &adev->gfx.mec_fw,
>  				   "amdgpu/%s_mec.bin", chip_name);
>  	if (err)
>  		goto out;