152 lines
3.9 KiB
C
152 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
#include "edac_module.h"
|
|
|
|
static struct dentry *edac_debugfs;
|
|
|
|
static ssize_t edac_fake_inject_write(struct file *file,
|
|
const char __user *data,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct device *dev = file->private_data;
|
|
struct mem_ctl_info *mci = to_mci(dev);
|
|
static enum hw_event_mc_err_type type;
|
|
u16 errcount = mci->fake_inject_count;
|
|
|
|
if (!errcount)
|
|
errcount = 1;
|
|
|
|
type = mci->fake_inject_ue ? HW_EVENT_ERR_UNCORRECTED
|
|
: HW_EVENT_ERR_CORRECTED;
|
|
|
|
printk(KERN_DEBUG
|
|
"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",
|
|
errcount,
|
|
(type == HW_EVENT_ERR_UNCORRECTED) ? "UE" : "CE",
|
|
errcount > 1 ? "s" : "",
|
|
mci->fake_inject_layer[0],
|
|
mci->fake_inject_layer[1],
|
|
mci->fake_inject_layer[2]
|
|
);
|
|
edac_mc_handle_error(type, mci, errcount, 0, 0, 0,
|
|
mci->fake_inject_layer[0],
|
|
mci->fake_inject_layer[1],
|
|
mci->fake_inject_layer[2],
|
|
"FAKE ERROR", "for EDAC testing only");
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations debug_fake_inject_fops = {
|
|
.open = simple_open,
|
|
.write = edac_fake_inject_write,
|
|
.llseek = generic_file_llseek,
|
|
};
|
|
|
|
void __init edac_debugfs_init(void)
|
|
{
|
|
edac_debugfs = debugfs_create_dir("edac", NULL);
|
|
}
|
|
|
|
void edac_debugfs_exit(void)
|
|
{
|
|
debugfs_remove_recursive(edac_debugfs);
|
|
}
|
|
|
|
void edac_create_debugfs_nodes(struct mem_ctl_info *mci)
|
|
{
|
|
struct dentry *parent;
|
|
char name[80];
|
|
int i;
|
|
|
|
parent = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs);
|
|
|
|
for (i = 0; i < mci->n_layers; i++) {
|
|
sprintf(name, "fake_inject_%s",
|
|
edac_layer_name[mci->layers[i].type]);
|
|
debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent,
|
|
&mci->fake_inject_layer[i]);
|
|
}
|
|
|
|
debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent,
|
|
&mci->fake_inject_ue);
|
|
|
|
debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent,
|
|
&mci->fake_inject_count);
|
|
|
|
debugfs_create_file("fake_inject", S_IWUSR, parent, &mci->dev,
|
|
&debug_fake_inject_fops);
|
|
|
|
mci->debugfs = parent;
|
|
}
|
|
|
|
/* Create a toplevel dir under EDAC's debugfs hierarchy */
|
|
struct dentry *edac_debugfs_create_dir(const char *dirname)
|
|
{
|
|
if (!edac_debugfs)
|
|
return NULL;
|
|
|
|
return debugfs_create_dir(dirname, edac_debugfs);
|
|
}
|
|
EXPORT_SYMBOL_GPL(edac_debugfs_create_dir);
|
|
|
|
/* Create a toplevel dir under EDAC's debugfs hierarchy with parent @parent */
|
|
struct dentry *
|
|
edac_debugfs_create_dir_at(const char *dirname, struct dentry *parent)
|
|
{
|
|
return debugfs_create_dir(dirname, parent);
|
|
}
|
|
EXPORT_SYMBOL_GPL(edac_debugfs_create_dir_at);
|
|
|
|
/*
|
|
* Create a file under EDAC's hierarchy or a sub-hierarchy:
|
|
*
|
|
* @name: file name
|
|
* @mode: file permissions
|
|
* @parent: parent dentry. If NULL, it becomes the toplevel EDAC dir
|
|
* @data: private data of caller
|
|
* @fops: file operations of this file
|
|
*/
|
|
struct dentry *
|
|
edac_debugfs_create_file(const char *name, umode_t mode, struct dentry *parent,
|
|
void *data, const struct file_operations *fops)
|
|
{
|
|
if (!parent)
|
|
parent = edac_debugfs;
|
|
|
|
return debugfs_create_file(name, mode, parent, data, fops);
|
|
}
|
|
EXPORT_SYMBOL_GPL(edac_debugfs_create_file);
|
|
|
|
/* Wrapper for debugfs_create_x8() */
|
|
void edac_debugfs_create_x8(const char *name, umode_t mode,
|
|
struct dentry *parent, u8 *value)
|
|
{
|
|
if (!parent)
|
|
parent = edac_debugfs;
|
|
|
|
debugfs_create_x8(name, mode, parent, value);
|
|
}
|
|
EXPORT_SYMBOL_GPL(edac_debugfs_create_x8);
|
|
|
|
/* Wrapper for debugfs_create_x16() */
|
|
void edac_debugfs_create_x16(const char *name, umode_t mode,
|
|
struct dentry *parent, u16 *value)
|
|
{
|
|
if (!parent)
|
|
parent = edac_debugfs;
|
|
|
|
debugfs_create_x16(name, mode, parent, value);
|
|
}
|
|
EXPORT_SYMBOL_GPL(edac_debugfs_create_x16);
|
|
|
|
/* Wrapper for debugfs_create_x32() */
|
|
void edac_debugfs_create_x32(const char *name, umode_t mode,
|
|
struct dentry *parent, u32 *value)
|
|
{
|
|
if (!parent)
|
|
parent = edac_debugfs;
|
|
|
|
debugfs_create_x32(name, mode, parent, value);
|
|
}
|
|
EXPORT_SYMBOL_GPL(edac_debugfs_create_x32);
|