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4
5
6#include <linux/fs.h>
7#include <drm/drm_print.h>
8
9#include "gt/debugfs_gt.h"
10#include "intel_guc.h"
11#include "intel_guc_log.h"
12#include "intel_guc_log_debugfs.h"
13
14static int guc_log_dump_show(struct seq_file *m, void *data)
15{
16 struct drm_printer p = drm_seq_file_printer(m);
17
18 return intel_guc_log_dump(m->private, &p, false);
19}
20DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_log_dump);
21
22static int guc_load_err_log_dump_show(struct seq_file *m, void *data)
23{
24 struct drm_printer p = drm_seq_file_printer(m);
25
26 return intel_guc_log_dump(m->private, &p, true);
27}
28DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_load_err_log_dump);
29
30static int guc_log_level_get(void *data, u64 *val)
31{
32 struct intel_guc_log *log = data;
33
34 if (!intel_guc_is_used(log_to_guc(log)))
35 return -ENODEV;
36
37 *val = intel_guc_log_get_level(log);
38
39 return 0;
40}
41
42static int guc_log_level_set(void *data, u64 val)
43{
44 struct intel_guc_log *log = data;
45
46 if (!intel_guc_is_used(log_to_guc(log)))
47 return -ENODEV;
48
49 return intel_guc_log_set_level(log, val);
50}
51
52DEFINE_SIMPLE_ATTRIBUTE(guc_log_level_fops,
53 guc_log_level_get, guc_log_level_set,
54 "%lld\n");
55
56static int guc_log_relay_open(struct inode *inode, struct file *file)
57{
58 struct intel_guc_log *log = inode->i_private;
59
60 if (!intel_guc_is_ready(log_to_guc(log)))
61 return -ENODEV;
62
63 file->private_data = log;
64
65 return intel_guc_log_relay_open(log);
66}
67
68static ssize_t
69guc_log_relay_write(struct file *filp,
70 const char __user *ubuf,
71 size_t cnt,
72 loff_t *ppos)
73{
74 struct intel_guc_log *log = filp->private_data;
75 int val;
76 int ret;
77
78 ret = kstrtoint_from_user(ubuf, cnt, 0, &val);
79 if (ret < 0)
80 return ret;
81
82
83
84
85
86 if (val == 1)
87 ret = intel_guc_log_relay_start(log);
88 else
89 intel_guc_log_relay_flush(log);
90
91 return ret ?: cnt;
92}
93
94static int guc_log_relay_release(struct inode *inode, struct file *file)
95{
96 struct intel_guc_log *log = inode->i_private;
97
98 intel_guc_log_relay_close(log);
99 return 0;
100}
101
102static const struct file_operations guc_log_relay_fops = {
103 .owner = THIS_MODULE,
104 .open = guc_log_relay_open,
105 .write = guc_log_relay_write,
106 .release = guc_log_relay_release,
107};
108
109void intel_guc_log_debugfs_register(struct intel_guc_log *log,
110 struct dentry *root)
111{
112 static const struct debugfs_gt_file files[] = {
113 { "guc_log_dump", &guc_log_dump_fops, NULL },
114 { "guc_load_err_log_dump", &guc_load_err_log_dump_fops, NULL },
115 { "guc_log_level", &guc_log_level_fops, NULL },
116 { "guc_log_relay", &guc_log_relay_fops, NULL },
117 };
118
119 if (!intel_guc_is_supported(log_to_guc(log)))
120 return;
121
122 intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), log);
123}
124
125