^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #include "edac_module.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) static struct dentry *edac_debugfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) static ssize_t edac_fake_inject_write(struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) const char __user *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) struct device *dev = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) struct mem_ctl_info *mci = to_mci(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) static enum hw_event_mc_err_type type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) u16 errcount = mci->fake_inject_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) if (!errcount)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) errcount = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) type = mci->fake_inject_ue ? HW_EVENT_ERR_UNCORRECTED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) : HW_EVENT_ERR_CORRECTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) printk(KERN_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) "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",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) errcount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) (type == HW_EVENT_ERR_UNCORRECTED) ? "UE" : "CE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) errcount > 1 ? "s" : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) mci->fake_inject_layer[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) mci->fake_inject_layer[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) mci->fake_inject_layer[2]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) edac_mc_handle_error(type, mci, errcount, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) mci->fake_inject_layer[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) mci->fake_inject_layer[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) mci->fake_inject_layer[2],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) "FAKE ERROR", "for EDAC testing only");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static const struct file_operations debug_fake_inject_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) .open = simple_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) .write = edac_fake_inject_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) .llseek = generic_file_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) void __init edac_debugfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) edac_debugfs = debugfs_create_dir("edac", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) void edac_debugfs_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) debugfs_remove_recursive(edac_debugfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) void edac_create_debugfs_nodes(struct mem_ctl_info *mci)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct dentry *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) char name[80];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) parent = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) for (i = 0; i < mci->n_layers; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) sprintf(name, "fake_inject_%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) edac_layer_name[mci->layers[i].type]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) &mci->fake_inject_layer[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) &mci->fake_inject_ue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) &mci->fake_inject_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) debugfs_create_file("fake_inject", S_IWUSR, parent, &mci->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) &debug_fake_inject_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) mci->debugfs = parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* Create a toplevel dir under EDAC's debugfs hierarchy */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct dentry *edac_debugfs_create_dir(const char *dirname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (!edac_debugfs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return debugfs_create_dir(dirname, edac_debugfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) EXPORT_SYMBOL_GPL(edac_debugfs_create_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /* Create a toplevel dir under EDAC's debugfs hierarchy with parent @parent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct dentry *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) edac_debugfs_create_dir_at(const char *dirname, struct dentry *parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return debugfs_create_dir(dirname, parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) EXPORT_SYMBOL_GPL(edac_debugfs_create_dir_at);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * Create a file under EDAC's hierarchy or a sub-hierarchy:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * @name: file name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * @mode: file permissions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * @parent: parent dentry. If NULL, it becomes the toplevel EDAC dir
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * @data: private data of caller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * @fops: file operations of this file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct dentry *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) edac_debugfs_create_file(const char *name, umode_t mode, struct dentry *parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) void *data, const struct file_operations *fops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (!parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) parent = edac_debugfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return debugfs_create_file(name, mode, parent, data, fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) EXPORT_SYMBOL_GPL(edac_debugfs_create_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /* Wrapper for debugfs_create_x8() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) void edac_debugfs_create_x8(const char *name, umode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct dentry *parent, u8 *value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (!parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) parent = edac_debugfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) debugfs_create_x8(name, mode, parent, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) EXPORT_SYMBOL_GPL(edac_debugfs_create_x8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) /* Wrapper for debugfs_create_x16() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) void edac_debugfs_create_x16(const char *name, umode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) struct dentry *parent, u16 *value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (!parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) parent = edac_debugfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) debugfs_create_x16(name, mode, parent, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) EXPORT_SYMBOL_GPL(edac_debugfs_create_x16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) /* Wrapper for debugfs_create_x32() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) void edac_debugfs_create_x32(const char *name, umode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct dentry *parent, u32 *value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (!parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) parent = edac_debugfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) debugfs_create_x32(name, mode, parent, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) EXPORT_SYMBOL_GPL(edac_debugfs_create_x32);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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