1  // SPDX-License-Identifier: MIT
2  /*
3   * Copyright © 2022 Intel Corporation
4   */
5  
6  #include "xe_gt_sysfs.h"
7  
8  #include <linux/kobject.h>
9  #include <linux/sysfs.h>
10  
11  #include <drm/drm_managed.h>
12  
13  #include "xe_gt.h"
14  
xe_gt_sysfs_kobj_release(struct kobject * kobj)15  static void xe_gt_sysfs_kobj_release(struct kobject *kobj)
16  {
17  	kfree(kobj);
18  }
19  
20  static const struct kobj_type xe_gt_sysfs_kobj_type = {
21  	.release = xe_gt_sysfs_kobj_release,
22  	.sysfs_ops = &kobj_sysfs_ops,
23  };
24  
gt_sysfs_fini(void * arg)25  static void gt_sysfs_fini(void *arg)
26  {
27  	struct xe_gt *gt = arg;
28  
29  	kobject_put(gt->sysfs);
30  }
31  
xe_gt_sysfs_init(struct xe_gt * gt)32  int xe_gt_sysfs_init(struct xe_gt *gt)
33  {
34  	struct xe_tile *tile = gt_to_tile(gt);
35  	struct xe_device *xe = gt_to_xe(gt);
36  	struct kobj_gt *kg;
37  	int err;
38  
39  	kg = kzalloc(sizeof(*kg), GFP_KERNEL);
40  	if (!kg)
41  		return -ENOMEM;
42  
43  	kobject_init(&kg->base, &xe_gt_sysfs_kobj_type);
44  	kg->gt = gt;
45  
46  	err = kobject_add(&kg->base, tile->sysfs, "gt%d", gt->info.id);
47  	if (err) {
48  		kobject_put(&kg->base);
49  		return err;
50  	}
51  
52  	gt->sysfs = &kg->base;
53  
54  	return devm_add_action_or_reset(xe->drm.dev, gt_sysfs_fini, gt);
55  }
56