[PATCH 2/2] drm/amdgpu: Enable per-queue reset support

[Lazar, Lijo]

On 2/14/2025 11:25 AM, jesse.zhang at amd.com wrote:
> From: "Jesse.zhang at amd.com" <Jesse.zhang at amd.com>
> 
> This patch updates the SDMA v4.4.2 software initialization to enable per-queue
> reset support when the MEC firmware version is 0xb0 or higher and the PMFW
> supports SDMA reset.
> 
> The following changes are included:
> - Added a condition to check if the MEC firmware version is at least 0xb0 and if
>   the PMFW supports SDMA reset using `amdgpu_dpm_reset_sdma_is_supported`.
> - If both conditions are met, the `AMDGPU_RESET_TYPE_PER_QUEUE` flag is set in
>   `adev->sdma.supported_reset`.
> 
> Suggested-by: Jonathan Kim <Jonathan.Kim at amd.com>
> Signed-off-by: Vitaly Prosyak <vitaly.prosyak at amd.com>
> Signed-off-by: Jesse Zhang <jesse.zhang at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
> index b24a1ff5d743..e01d97b96655 100644
> --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
> +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
> @@ -1481,9 +1481,10 @@ static int sdma_v4_4_2_sw_init(struct amdgpu_ip_block *ip_block)
>  		}
>  	}
>  
> -	/* TODO: Add queue reset mask when FW fully supports it */
>  	adev->sdma.supported_reset =
>  		amdgpu_get_soft_full_reset_mask(&adev->sdma.instance[0].ring);
> +	if (adev->gfx.mec_fw_version >= 0xb0 && amdgpu_dpm_reset_sdma_is_supported(adev))
> +		adev->sdma.supported_reset |= AMDGPU_RESET_TYPE_PER_QUEUE;

This function is reused across multiple IP versions. MEC fw versions
aren't the same across those IP versions.

Thanks,
Lijo

>  
>  	if (amdgpu_sdma_ras_sw_init(adev)) {
>  		dev_err(adev->dev, "fail to initialize sdma ras block\n");