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