Commit cea084e8 authored by Michał Winiarski's avatar Michał Winiarski
Browse files

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: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patch.msgid.link/20251112132220.516975-14-michal.winiarski@intel.com


Signed-off-by: default avatarMichał Winiarski <michal.winiarski@intel.com>
parent d608fbf4

drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c

+0 −47
Original line number Diff line number Diff line
@@ -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);