1 /* SPDX-License-Identifier: MIT */
2 /*
3  * Copyright © 2019 Intel Corporation
4  */
5 
6 #ifndef INTEL_GT_DEBUGFS_H
7 #define INTEL_GT_DEBUGFS_H
8 
9 #include <linux/file.h>
10 
11 struct intel_gt;
12 
13 #define __GT_DEBUGFS_ATTRIBUTE_FOPS(__name)				\
14 static const struct file_operations __name ## _fops = {			\
15 	.owner = THIS_MODULE,						\
16 	.open = __name ## _open,					\
17 	.read = seq_read,						\
18 	.llseek = seq_lseek,						\
19 	.release = single_release,					\
20 }
21 
22 #define DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(__name)			\
23 static int __name ## _open(struct inode *inode, struct file *file)	\
24 {									\
25 	return single_open(file, __name ## _show, inode->i_private);	\
26 }									\
27 __GT_DEBUGFS_ATTRIBUTE_FOPS(__name)
28 
29 #define DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE_WITH_SIZE(__name, __size_vf)		\
30 static int __name ## _open(struct inode *inode, struct file *file)		\
31 {										\
32 	return single_open_size(file, __name ## _show, inode->i_private,	\
33 			    __size_vf(inode->i_private));			\
34 }										\
35 __GT_DEBUGFS_ATTRIBUTE_FOPS(__name)
36 
37 void intel_gt_debugfs_register(struct intel_gt *gt);
38 
39 struct intel_gt_debugfs_file {
40 	const char *name;
41 	const struct file_operations *fops;
42 	bool (*eval)(void *data);
43 };
44 
45 void intel_gt_debugfs_register_files(struct dentry *root,
46 				     const struct intel_gt_debugfs_file *files,
47 				     unsigned long count, void *data);
48 
49 /* functions that need to be accessed by the upper level non-gt interfaces */
50 int intel_gt_debugfs_reset_show(struct intel_gt *gt, u64 *val);
51 void intel_gt_debugfs_reset_store(struct intel_gt *gt, u64 val);
52 
53 #endif /* INTEL_GT_DEBUGFS_H */
54