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(struct drm_device * drm,void * arg)25 static void gt_sysfs_fini(struct drm_device *drm, 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 void 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;
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 drm_warn(&xe->drm, "failed to add GT sysfs directory, err: %d\n", err);
49 kobject_put(&kg->base);
50 return;
51 }
52
53 gt->sysfs = &kg->base;
54
55 err = drmm_add_action_or_reset(&xe->drm, gt_sysfs_fini, gt);
56 if (err) {
57 drm_warn(&xe->drm, "%s: drmm_add_action_or_reset failed, err: %d\n",
58 __func__, err);
59 return;
60 }
61 }
62