drm/xe/pf: Remove GuC migration data save/restore from GT debugfs

In upcoming changes, SR-IOV VF migration data will be extended beyond
GuC data and exported to userspace using VFIO interface (with a
vendor-specific variant driver) and a device-level debugfs interface.
Remove the GT-level debugfs.

Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patch.msgid.link/20251112132220.516975-14-michal.winiarski@intel.com
Signed-off-by: Michał Winiarski <michal.winiarski@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 838beb7f6327fcb3b5aeaae521fcff01e010a62b..5278ea4fd6552ceb4bfb4b2732f889fd7c004136 100644 (file)
--- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
@@ -327,9 +327,6 @@ 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)
@@ -393,47 +390,6 @@ static const struct file_operations control_ops = {
        .llseek         = default_llseek,
 };
 
-/*
- *      /sys/kernel/debug/dri/BDF/
- *      ├── sriov
- *      :   ├── vf1
- *          :   ├── tile0
- *              :   ├── gt0
- *                  :   ├── guc_state
- */
-
-static ssize_t guc_state_read(struct file *file, char __user *buf,
-                             size_t count, loff_t *pos)
-{
-       struct dentry *dent = file_dentry(file);
-       struct dentry *parent = dent->d_parent;
-       struct xe_gt *gt = extract_gt(parent);
-       unsigned int vfid = extract_vfid(parent);
-
-       return xe_gt_sriov_pf_migration_read_guc_state(gt, vfid, buf, count, pos);
-}
-
-static ssize_t guc_state_write(struct file *file, const char __user *buf,
-                              size_t count, loff_t *pos)
-{
-       struct dentry *dent = file_dentry(file);
-       struct dentry *parent = dent->d_parent;
-       struct xe_gt *gt = extract_gt(parent);
-       unsigned int vfid = extract_vfid(parent);
-
-       if (*pos)
-               return -EINVAL;
-
-       return xe_gt_sriov_pf_migration_write_guc_state(gt, vfid, buf, count);
-}
-
-static const struct file_operations guc_state_ops = {
-       .owner          = THIS_MODULE,
-       .read           = guc_state_read,
-       .write          = guc_state_write,
-       .llseek         = default_llseek,
-};
-
 /*
  *      /sys/kernel/debug/dri/BDF/
  *      ├── sriov
@@ -568,9 +524,6 @@ static void pf_populate_gt(struct xe_gt *gt, struct dentry *dent, unsigned int v
 
                /* for testing/debugging purposes only! */
                if (IS_ENABLED(CONFIG_DRM_XE_DEBUG)) {
-                       debugfs_create_file("guc_state",
-                                           IS_ENABLED(CONFIG_DRM_XE_DEBUG_SRIOV) ? 0600 : 0400,
-                                           dent, NULL, &guc_state_ops);
                        debugfs_create_file("config_blob",
                                            IS_ENABLED(CONFIG_DRM_XE_DEBUG_SRIOV) ? 0600 : 0400,
                                            dent, NULL, &config_blob_ops);