Commit 1c38dd6a authored by Michal Wajdeczko's avatar Michal Wajdeczko
Browse files

drm/xe/pf: Resend PF provisioning after GT reset 



If we reload the GuC due to suspend/resume or GT reset then we
have to resend not only any VFs provisioning data, but also PF
configuration, like scheduling parameters (EQ, PT), as otherwise
GuC will continue to use default values.

Fixes: 41122080 ("drm/xe/pf: Restart VFs provisioning after GT reset")
Signed-off-by: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: default avatarPiotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://lore.kernel.org/r/20250711193316.1920-3-michal.wajdeczko@intel.com
parent 9f50b729

drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c

+27 −0
Original line number Diff line number Diff line
@@ -2366,6 +2366,21 @@ int xe_gt_sriov_pf_config_restore(struct xe_gt *gt, unsigned int vfid, 
	return err;

}



static int pf_push_self_config(struct xe_gt *gt)

{

	int err;



	err = pf_push_full_vf_config(gt, PFID);

	if (err) {

		xe_gt_sriov_err(gt, "Failed to push self configuration (%pe)\n",

				ERR_PTR(err));

		return err;

	}



	xe_gt_sriov_dbg_verbose(gt, "self configuration completed\n");

	return 0;

}



static void fini_config(void *arg)

{

	struct xe_gt *gt = arg;
@@ -2389,9 +2404,17 @@ static void fini_config(void *arg) 
int xe_gt_sriov_pf_config_init(struct xe_gt *gt)

{

	struct xe_device *xe = gt_to_xe(gt);

	int err;



	xe_gt_assert(gt, IS_SRIOV_PF(xe));



	mutex_lock(xe_gt_sriov_pf_master_mutex(gt));

	err = pf_push_self_config(gt);

	mutex_unlock(xe_gt_sriov_pf_master_mutex(gt));



	if (err)

		return err;



	return devm_add_action_or_reset(xe->drm.dev, fini_config, gt);

}
@@ -2409,6 +2432,10 @@ void xe_gt_sriov_pf_config_restart(struct xe_gt *gt) 
	unsigned int n, total_vfs = xe_sriov_pf_get_totalvfs(gt_to_xe(gt));

	unsigned int fail = 0, skip = 0;



	mutex_lock(xe_gt_sriov_pf_master_mutex(gt));

	pf_push_self_config(gt);

	mutex_unlock(xe_gt_sriov_pf_master_mutex(gt));



	for (n = 1; n <= total_vfs; n++) {

		if (xe_gt_sriov_pf_config_is_empty(gt, n))

			skip++;