1457c8996SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
27ac8bf9bSBorislav Petkov #include "edac_module.h"
37ac8bf9bSBorislav Petkov
47ac8bf9bSBorislav Petkov static struct dentry *edac_debugfs;
57ac8bf9bSBorislav Petkov
edac_fake_inject_write(struct file * file,const char __user * data,size_t count,loff_t * ppos)67ac8bf9bSBorislav Petkov static ssize_t edac_fake_inject_write(struct file *file,
77ac8bf9bSBorislav Petkov const char __user *data,
87ac8bf9bSBorislav Petkov size_t count, loff_t *ppos)
97ac8bf9bSBorislav Petkov {
107ac8bf9bSBorislav Petkov struct device *dev = file->private_data;
117ac8bf9bSBorislav Petkov struct mem_ctl_info *mci = to_mci(dev);
127ac8bf9bSBorislav Petkov static enum hw_event_mc_err_type type;
137ac8bf9bSBorislav Petkov u16 errcount = mci->fake_inject_count;
147ac8bf9bSBorislav Petkov
157ac8bf9bSBorislav Petkov if (!errcount)
167ac8bf9bSBorislav Petkov errcount = 1;
177ac8bf9bSBorislav Petkov
187ac8bf9bSBorislav Petkov type = mci->fake_inject_ue ? HW_EVENT_ERR_UNCORRECTED
197ac8bf9bSBorislav Petkov : HW_EVENT_ERR_CORRECTED;
207ac8bf9bSBorislav Petkov
217ac8bf9bSBorislav Petkov printk(KERN_DEBUG
227ac8bf9bSBorislav Petkov "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",
237ac8bf9bSBorislav Petkov errcount,
247ac8bf9bSBorislav Petkov (type == HW_EVENT_ERR_UNCORRECTED) ? "UE" : "CE",
257ac8bf9bSBorislav Petkov errcount > 1 ? "s" : "",
267ac8bf9bSBorislav Petkov mci->fake_inject_layer[0],
277ac8bf9bSBorislav Petkov mci->fake_inject_layer[1],
287ac8bf9bSBorislav Petkov mci->fake_inject_layer[2]
297ac8bf9bSBorislav Petkov );
307ac8bf9bSBorislav Petkov edac_mc_handle_error(type, mci, errcount, 0, 0, 0,
317ac8bf9bSBorislav Petkov mci->fake_inject_layer[0],
327ac8bf9bSBorislav Petkov mci->fake_inject_layer[1],
337ac8bf9bSBorislav Petkov mci->fake_inject_layer[2],
347ac8bf9bSBorislav Petkov "FAKE ERROR", "for EDAC testing only");
357ac8bf9bSBorislav Petkov
367ac8bf9bSBorislav Petkov return count;
377ac8bf9bSBorislav Petkov }
387ac8bf9bSBorislav Petkov
397ac8bf9bSBorislav Petkov static const struct file_operations debug_fake_inject_fops = {
407ac8bf9bSBorislav Petkov .open = simple_open,
417ac8bf9bSBorislav Petkov .write = edac_fake_inject_write,
427ac8bf9bSBorislav Petkov .llseek = generic_file_llseek,
437ac8bf9bSBorislav Petkov };
447ac8bf9bSBorislav Petkov
edac_debugfs_init(void)45912ebd99SGreg Kroah-Hartman void __init edac_debugfs_init(void)
467ac8bf9bSBorislav Petkov {
477ac8bf9bSBorislav Petkov edac_debugfs = debugfs_create_dir("edac", NULL);
487ac8bf9bSBorislav Petkov }
497ac8bf9bSBorislav Petkov
edac_debugfs_exit(void)507ac8bf9bSBorislav Petkov void edac_debugfs_exit(void)
517ac8bf9bSBorislav Petkov {
529bf4f005SThor Thayer debugfs_remove_recursive(edac_debugfs);
537ac8bf9bSBorislav Petkov }
547ac8bf9bSBorislav Petkov
edac_create_debugfs_nodes(struct mem_ctl_info * mci)55912ebd99SGreg Kroah-Hartman void edac_create_debugfs_nodes(struct mem_ctl_info *mci)
567ac8bf9bSBorislav Petkov {
57912ebd99SGreg Kroah-Hartman struct dentry *parent;
587ac8bf9bSBorislav Petkov char name[80];
597ac8bf9bSBorislav Petkov int i;
607ac8bf9bSBorislav Petkov
61912ebd99SGreg Kroah-Hartman parent = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs);
627ac8bf9bSBorislav Petkov
637ac8bf9bSBorislav Petkov for (i = 0; i < mci->n_layers; i++) {
647ac8bf9bSBorislav Petkov sprintf(name, "fake_inject_%s",
657ac8bf9bSBorislav Petkov edac_layer_name[mci->layers[i].type]);
66912ebd99SGreg Kroah-Hartman debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent,
677ac8bf9bSBorislav Petkov &mci->fake_inject_layer[i]);
687ac8bf9bSBorislav Petkov }
697ac8bf9bSBorislav Petkov
70912ebd99SGreg Kroah-Hartman debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent,
717ac8bf9bSBorislav Petkov &mci->fake_inject_ue);
727ac8bf9bSBorislav Petkov
73912ebd99SGreg Kroah-Hartman debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent,
747ac8bf9bSBorislav Petkov &mci->fake_inject_count);
757ac8bf9bSBorislav Petkov
76912ebd99SGreg Kroah-Hartman debugfs_create_file("fake_inject", S_IWUSR, parent, &mci->dev,
777ac8bf9bSBorislav Petkov &debug_fake_inject_fops);
787ac8bf9bSBorislav Petkov
797ac8bf9bSBorislav Petkov mci->debugfs = parent;
807ac8bf9bSBorislav Petkov }
814397bcb4SBorislav Petkov
824397bcb4SBorislav Petkov /* Create a toplevel dir under EDAC's debugfs hierarchy */
edac_debugfs_create_dir(const char * dirname)834397bcb4SBorislav Petkov struct dentry *edac_debugfs_create_dir(const char *dirname)
844397bcb4SBorislav Petkov {
854397bcb4SBorislav Petkov if (!edac_debugfs)
864397bcb4SBorislav Petkov return NULL;
874397bcb4SBorislav Petkov
884397bcb4SBorislav Petkov return debugfs_create_dir(dirname, edac_debugfs);
894397bcb4SBorislav Petkov }
904397bcb4SBorislav Petkov EXPORT_SYMBOL_GPL(edac_debugfs_create_dir);
914397bcb4SBorislav Petkov
924397bcb4SBorislav Petkov /* Create a toplevel dir under EDAC's debugfs hierarchy with parent @parent */
934397bcb4SBorislav Petkov struct dentry *
edac_debugfs_create_dir_at(const char * dirname,struct dentry * parent)944397bcb4SBorislav Petkov edac_debugfs_create_dir_at(const char *dirname, struct dentry *parent)
954397bcb4SBorislav Petkov {
964397bcb4SBorislav Petkov return debugfs_create_dir(dirname, parent);
974397bcb4SBorislav Petkov }
984397bcb4SBorislav Petkov EXPORT_SYMBOL_GPL(edac_debugfs_create_dir_at);
994397bcb4SBorislav Petkov
1004397bcb4SBorislav Petkov /*
1014397bcb4SBorislav Petkov * Create a file under EDAC's hierarchy or a sub-hierarchy:
1024397bcb4SBorislav Petkov *
1034397bcb4SBorislav Petkov * @name: file name
1044397bcb4SBorislav Petkov * @mode: file permissions
1054397bcb4SBorislav Petkov * @parent: parent dentry. If NULL, it becomes the toplevel EDAC dir
1064397bcb4SBorislav Petkov * @data: private data of caller
1074397bcb4SBorislav Petkov * @fops: file operations of this file
1084397bcb4SBorislav Petkov */
1094397bcb4SBorislav Petkov struct dentry *
edac_debugfs_create_file(const char * name,umode_t mode,struct dentry * parent,void * data,const struct file_operations * fops)1104397bcb4SBorislav Petkov edac_debugfs_create_file(const char *name, umode_t mode, struct dentry *parent,
1114397bcb4SBorislav Petkov void *data, const struct file_operations *fops)
1124397bcb4SBorislav Petkov {
1134397bcb4SBorislav Petkov if (!parent)
1144397bcb4SBorislav Petkov parent = edac_debugfs;
1154397bcb4SBorislav Petkov
1164397bcb4SBorislav Petkov return debugfs_create_file(name, mode, parent, data, fops);
1174397bcb4SBorislav Petkov }
1184397bcb4SBorislav Petkov EXPORT_SYMBOL_GPL(edac_debugfs_create_file);
1194397bcb4SBorislav Petkov
1204397bcb4SBorislav Petkov /* Wrapper for debugfs_create_x8() */
edac_debugfs_create_x8(const char * name,umode_t mode,struct dentry * parent,u8 * value)12140d79624SGreg Kroah-Hartman void edac_debugfs_create_x8(const char *name, umode_t mode,
1224397bcb4SBorislav Petkov struct dentry *parent, u8 *value)
1234397bcb4SBorislav Petkov {
1244397bcb4SBorislav Petkov if (!parent)
1254397bcb4SBorislav Petkov parent = edac_debugfs;
1264397bcb4SBorislav Petkov
12740d79624SGreg Kroah-Hartman debugfs_create_x8(name, mode, parent, value);
1284397bcb4SBorislav Petkov }
1294397bcb4SBorislav Petkov EXPORT_SYMBOL_GPL(edac_debugfs_create_x8);
1304397bcb4SBorislav Petkov
1314397bcb4SBorislav Petkov /* Wrapper for debugfs_create_x16() */
edac_debugfs_create_x16(const char * name,umode_t mode,struct dentry * parent,u16 * value)13240d79624SGreg Kroah-Hartman void edac_debugfs_create_x16(const char *name, umode_t mode,
1334397bcb4SBorislav Petkov struct dentry *parent, u16 *value)
1344397bcb4SBorislav Petkov {
1354397bcb4SBorislav Petkov if (!parent)
1364397bcb4SBorislav Petkov parent = edac_debugfs;
1374397bcb4SBorislav Petkov
13840d79624SGreg Kroah-Hartman debugfs_create_x16(name, mode, parent, value);
1394397bcb4SBorislav Petkov }
1404397bcb4SBorislav Petkov EXPORT_SYMBOL_GPL(edac_debugfs_create_x16);
141*0ecace04SJan Luebbe
142*0ecace04SJan Luebbe /* Wrapper for debugfs_create_x32() */
edac_debugfs_create_x32(const char * name,umode_t mode,struct dentry * parent,u32 * value)143*0ecace04SJan Luebbe void edac_debugfs_create_x32(const char *name, umode_t mode,
144*0ecace04SJan Luebbe struct dentry *parent, u32 *value)
145*0ecace04SJan Luebbe {
146*0ecace04SJan Luebbe if (!parent)
147*0ecace04SJan Luebbe parent = edac_debugfs;
148*0ecace04SJan Luebbe
149*0ecace04SJan Luebbe debugfs_create_x32(name, mode, parent, value);
150*0ecace04SJan Luebbe }
151*0ecace04SJan Luebbe EXPORT_SYMBOL_GPL(edac_debugfs_create_x32);
152