Re: [PATCH 16/16] drm/msm/adreno: Expose a PARAM to check AQE support

[Dmitry Baryshkov]

On Tue, Mar 24, 2026 at 01:42:28AM +0530, Akhil P Oommen wrote:
> AQE (Applicaton Qrisc Engine) is required to support VK ray-pipeline. Two
> conditions should be met to use this HW:
>   1. AQE firmware should be loaded and programmed
>   2. Preemption support
> 
> Expose a new MSM_PARAM to allow userspace to query its support.
> 
> Signed-off-by: Akhil P Oommen <akhilpo@xxxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/msm/adreno/a6xx_gpu.c   | 13 +++++++++++++
>  drivers/gpu/drm/msm/adreno/adreno_gpu.c |  4 ++++
>  drivers/gpu/drm/msm/adreno/adreno_gpu.h |  1 +
>  include/uapi/drm/msm_drm.h              |  1 +
>  4 files changed, 19 insertions(+)
> 
> diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h
> index 5c67294edc95..b99098792371 100644
> --- a/include/uapi/drm/msm_drm.h
> +++ b/include/uapi/drm/msm_drm.h
> @@ -117,6 +117,7 @@ struct drm_msm_timespec {
>   * ioctl will throw -EPIPE.
>   */
>  #define MSM_PARAM_EN_VM_BIND 0x16  /* WO, once */
> +#define MSM_PARAM_AQE	     0x17  /* RO */
>  
>  /* For backwards compat.  The original support for preemption was based on
>   * a single ring per priority level so # of priority levels equals the #
> 

I think this also requires a version bump in msm_drv.c


-- 
With best wishes
Dmitry