[PATCH v6 11/11] drm/v3d: Expose Super Pages capability

[Iago Toral]

Reviewed-by: Iago Toral Quiroga <itoral at igalia.com>

El lun, 23-09-2024 a las 10:55 -0300, Maíra Canal escribió:
> Add a new V3D parameter to expose the support of Super Pages to
> userspace. The userspace might want to know this information to
> apply optimizations that are specific to kernels with Super Pages
> enabled.
> 
> Signed-off-by: Maíra Canal <mcanal at igalia.com>
> ---
>  drivers/gpu/drm/v3d/v3d_drv.c | 3 +++
>  include/uapi/drm/v3d_drm.h    | 1 +
>  2 files changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/v3d/v3d_drv.c
> b/drivers/gpu/drm/v3d/v3d_drv.c
> index 8be8c6dd9b35..fb35c5c3f1a7 100644
> --- a/drivers/gpu/drm/v3d/v3d_drv.c
> +++ b/drivers/gpu/drm/v3d/v3d_drv.c
> @@ -104,6 +104,9 @@ static int v3d_get_param_ioctl(struct drm_device
> *dev, void *data,
>  	case DRM_V3D_PARAM_MAX_PERF_COUNTERS:
>  		args->value = v3d->perfmon_info.max_counters;
>  		return 0;
> +	case DRM_V3D_PARAM_SUPPORTS_SUPER_PAGES:
> +		args->value = !!v3d->gemfs;
> +		return 0;
>  	default:
>  		DRM_DEBUG("Unknown parameter %d\n", args->param);
>  		return -EINVAL;
> diff --git a/include/uapi/drm/v3d_drm.h b/include/uapi/drm/v3d_drm.h
> index 87fc5bb0a61e..2376c73abca1 100644
> --- a/include/uapi/drm/v3d_drm.h
> +++ b/include/uapi/drm/v3d_drm.h
> @@ -290,6 +290,7 @@ enum drm_v3d_param {
>  	DRM_V3D_PARAM_SUPPORTS_MULTISYNC_EXT,
>  	DRM_V3D_PARAM_SUPPORTS_CPU_QUEUE,
>  	DRM_V3D_PARAM_MAX_PERF_COUNTERS,
> +	DRM_V3D_PARAM_SUPPORTS_SUPER_PAGES,
>  };
>  
>  struct drm_v3d_get_param {