Commit | Line | Data |
---|---|---|
7ac8bf9b BP |
1 | #include "edac_module.h" |
2 | ||
3 | static struct dentry *edac_debugfs; | |
4 | ||
5 | static ssize_t edac_fake_inject_write(struct file *file, | |
6 | const char __user *data, | |
7 | size_t count, loff_t *ppos) | |
8 | { | |
9 | struct device *dev = file->private_data; | |
10 | struct mem_ctl_info *mci = to_mci(dev); | |
11 | static enum hw_event_mc_err_type type; | |
12 | u16 errcount = mci->fake_inject_count; | |
13 | ||
14 | if (!errcount) | |
15 | errcount = 1; | |
16 | ||
17 | type = mci->fake_inject_ue ? HW_EVENT_ERR_UNCORRECTED | |
18 | : HW_EVENT_ERR_CORRECTED; | |
19 | ||
20 | printk(KERN_DEBUG | |
21 | "Generating %d %s fake error%s to %d.%d.%d to test core handling. NOTE: this won't test the driver-specific decoding logic.\n", | |
22 | errcount, | |
23 | (type == HW_EVENT_ERR_UNCORRECTED) ? "UE" : "CE", | |
24 | errcount > 1 ? "s" : "", | |
25 | mci->fake_inject_layer[0], | |
26 | mci->fake_inject_layer[1], | |
27 | mci->fake_inject_layer[2] | |
28 | ); | |
29 | edac_mc_handle_error(type, mci, errcount, 0, 0, 0, | |
30 | mci->fake_inject_layer[0], | |
31 | mci->fake_inject_layer[1], | |
32 | mci->fake_inject_layer[2], | |
33 | "FAKE ERROR", "for EDAC testing only"); | |
34 | ||
35 | return count; | |
36 | } | |
37 | ||
38 | static const struct file_operations debug_fake_inject_fops = { | |
39 | .open = simple_open, | |
40 | .write = edac_fake_inject_write, | |
41 | .llseek = generic_file_llseek, | |
42 | }; | |
43 | ||
44 | int __init edac_debugfs_init(void) | |
45 | { | |
46 | edac_debugfs = debugfs_create_dir("edac", NULL); | |
47 | if (IS_ERR(edac_debugfs)) { | |
48 | edac_debugfs = NULL; | |
49 | return -ENOMEM; | |
50 | } | |
51 | return 0; | |
52 | } | |
53 | ||
54 | void edac_debugfs_exit(void) | |
55 | { | |
9bf4f005 | 56 | debugfs_remove_recursive(edac_debugfs); |
7ac8bf9b BP |
57 | } |
58 | ||
59 | int edac_create_debugfs_nodes(struct mem_ctl_info *mci) | |
60 | { | |
61 | struct dentry *d, *parent; | |
62 | char name[80]; | |
63 | int i; | |
64 | ||
65 | if (!edac_debugfs) | |
66 | return -ENODEV; | |
67 | ||
68 | d = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs); | |
69 | if (!d) | |
70 | return -ENOMEM; | |
71 | parent = d; | |
72 | ||
73 | for (i = 0; i < mci->n_layers; i++) { | |
74 | sprintf(name, "fake_inject_%s", | |
75 | edac_layer_name[mci->layers[i].type]); | |
76 | d = debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent, | |
77 | &mci->fake_inject_layer[i]); | |
78 | if (!d) | |
79 | goto nomem; | |
80 | } | |
81 | ||
82 | d = debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent, | |
83 | &mci->fake_inject_ue); | |
84 | if (!d) | |
85 | goto nomem; | |
86 | ||
87 | d = debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent, | |
88 | &mci->fake_inject_count); | |
89 | if (!d) | |
90 | goto nomem; | |
91 | ||
92 | d = debugfs_create_file("fake_inject", S_IWUSR, parent, | |
93 | &mci->dev, | |
94 | &debug_fake_inject_fops); | |
95 | if (!d) | |
96 | goto nomem; | |
97 | ||
98 | mci->debugfs = parent; | |
99 | return 0; | |
100 | nomem: | |
30f84a89 | 101 | edac_debugfs_remove_recursive(mci->debugfs); |
7ac8bf9b BP |
102 | return -ENOMEM; |
103 | } | |
4397bcb4 BP |
104 | |
105 | /* Create a toplevel dir under EDAC's debugfs hierarchy */ | |
106 | struct dentry *edac_debugfs_create_dir(const char *dirname) | |
107 | { | |
108 | if (!edac_debugfs) | |
109 | return NULL; | |
110 | ||
111 | return debugfs_create_dir(dirname, edac_debugfs); | |
112 | } | |
113 | EXPORT_SYMBOL_GPL(edac_debugfs_create_dir); | |
114 | ||
115 | /* Create a toplevel dir under EDAC's debugfs hierarchy with parent @parent */ | |
116 | struct dentry * | |
117 | edac_debugfs_create_dir_at(const char *dirname, struct dentry *parent) | |
118 | { | |
119 | return debugfs_create_dir(dirname, parent); | |
120 | } | |
121 | EXPORT_SYMBOL_GPL(edac_debugfs_create_dir_at); | |
122 | ||
123 | /* | |
124 | * Create a file under EDAC's hierarchy or a sub-hierarchy: | |
125 | * | |
126 | * @name: file name | |
127 | * @mode: file permissions | |
128 | * @parent: parent dentry. If NULL, it becomes the toplevel EDAC dir | |
129 | * @data: private data of caller | |
130 | * @fops: file operations of this file | |
131 | */ | |
132 | struct dentry * | |
133 | edac_debugfs_create_file(const char *name, umode_t mode, struct dentry *parent, | |
134 | void *data, const struct file_operations *fops) | |
135 | { | |
136 | if (!parent) | |
137 | parent = edac_debugfs; | |
138 | ||
139 | return debugfs_create_file(name, mode, parent, data, fops); | |
140 | } | |
141 | EXPORT_SYMBOL_GPL(edac_debugfs_create_file); | |
142 | ||
143 | /* Wrapper for debugfs_create_x8() */ | |
144 | struct dentry *edac_debugfs_create_x8(const char *name, umode_t mode, | |
145 | struct dentry *parent, u8 *value) | |
146 | { | |
147 | if (!parent) | |
148 | parent = edac_debugfs; | |
149 | ||
150 | return debugfs_create_x8(name, mode, parent, value); | |
151 | } | |
152 | EXPORT_SYMBOL_GPL(edac_debugfs_create_x8); | |
153 | ||
154 | /* Wrapper for debugfs_create_x16() */ | |
155 | struct dentry *edac_debugfs_create_x16(const char *name, umode_t mode, | |
156 | struct dentry *parent, u16 *value) | |
157 | { | |
158 | if (!parent) | |
159 | parent = edac_debugfs; | |
160 | ||
161 | return debugfs_create_x16(name, mode, parent, value); | |
162 | } | |
163 | EXPORT_SYMBOL_GPL(edac_debugfs_create_x16); |