[PATCH 2/2] drm/xe/pf: Reset thresholds when releasing a VF config

[Piotr Piórkowski]

Michal Wajdeczko <michal.wajdeczko at intel.com> wrote on pią [2024-sie-30 15:21:00 +0200]:
> As part of the VF config release, we should reset all parameters,
> including thresholds, to always start with the clean VF config.
> 
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
> ---
>  drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
> index 151eb69ab4ae..a95e546b7744 100644
> --- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
> +++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
> @@ -1842,6 +1842,18 @@ u32 xe_gt_sriov_pf_config_get_threshold(struct xe_gt *gt, unsigned int vfid,
>  	return value;
>  }
>  
> +static void pf_reset_config_thresholds(struct xe_gt *gt, struct xe_gt_sriov_config *config)
> +{
> +	lockdep_assert_held(xe_gt_sriov_pf_master_mutex(gt));
> +
> +#define reset_threshold_config(TAG, ...) ({				\
> +	config->thresholds[MAKE_XE_GUC_KLV_THRESHOLD_INDEX(TAG)] = 0;	\
> +});
> +
> +	MAKE_XE_GUC_KLV_THRESHOLDS_SET(reset_threshold_config);
> +#undef reset_threshold_config
> +}
> +
>  static void pf_release_vf_config(struct xe_gt *gt, unsigned int vfid)
>  {
>  	struct xe_gt_sriov_config *config = pf_pick_vf_config(gt, vfid);
> @@ -1857,6 +1869,7 @@ static void pf_release_vf_config(struct xe_gt *gt, unsigned int vfid)
>  	pf_release_config_ctxs(gt, config);
>  	pf_release_config_dbs(gt, config);
>  	pf_reset_config_sched(gt, config);
> +	pf_reset_config_thresholds(gt, config);
>  }
>  
>  /**

LGTM:
Reviewed-by: Piotr Piórkowski <piotr.piorkowski at intel.com>

> -- 
> 2.43.0
> 

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