drm/xe/pf: Allow to trigger VF GuC state restore from debugfs

For feature enabling and testing purposes, allow to restore saved
or replaced VF GuC state from debugfs, bypassing normal migration
flow. This is available only under strict debug config.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Tomasz Lis <tomasz.lis@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240912203817.1880-7-michal.wajdeczko@intel.com

diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
index e990a63..ccbcf6e 100644 (file)
--- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
@@ -313,6 +313,9 @@ static const struct {
        { "stop", xe_gt_sriov_pf_control_stop_vf },
        { "pause", xe_gt_sriov_pf_control_pause_vf },
        { "resume", xe_gt_sriov_pf_control_resume_vf },
+#ifdef CONFIG_DRM_XE_DEBUG_SRIOV
+       { "restore!", xe_gt_sriov_pf_migration_restore_guc_state },
+#endif
 };
 
 static ssize_t control_write(struct file *file, const char __user *buf, size_t count, loff_t *pos)