4 * (C) 2007 www.softwarebitmaker.com
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2. This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
10 * Author: Doug Thompson <dougthompson@xmission.com>
13 #include <linux/edac.h>
15 #include "edac_core.h"
16 #include "edac_module.h"
18 #define EDAC_VERSION "Ver: 3.0.0"
20 #ifdef CONFIG_EDAC_DEBUG
22 static int edac_set_debug_level(const char *buf, struct kernel_param *kp)
27 ret = kstrtoul(buf, 0, &val);
34 return param_set_int(buf, kp);
37 /* Values of 0 to 4 will generate output */
38 int edac_debug_level = 2;
39 EXPORT_SYMBOL_GPL(edac_debug_level);
41 module_param_call(edac_debug_level, edac_set_debug_level, param_get_int,
42 &edac_debug_level, 0644);
43 MODULE_PARM_DESC(edac_debug_level, "EDAC debug level: [0-4], default: 2");
47 * edac_op_state_to_string()
49 char *edac_op_state_to_string(int opstate)
51 if (opstate == OP_RUNNING_POLL)
53 else if (opstate == OP_RUNNING_INTERRUPT)
55 else if (opstate == OP_RUNNING_POLL_INTR)
57 else if (opstate == OP_ALLOC)
59 else if (opstate == OP_OFFLINE)
66 * sysfs object: /sys/devices/system/edac
67 * need to export to other files
69 static struct bus_type edac_subsys = {
74 static int edac_subsys_init(void)
78 /* create the /sys/devices/system/edac directory */
79 err = subsys_system_register(&edac_subsys, NULL);
81 printk(KERN_ERR "Error registering toplevel EDAC sysfs dir\n");
86 static void edac_subsys_exit(void)
88 bus_unregister(&edac_subsys);
91 /* return pointer to the 'edac' node in sysfs */
92 struct bus_type *edac_get_sysfs_subsys(void)
96 EXPORT_SYMBOL_GPL(edac_get_sysfs_subsys);
99 * module initialization entry point
101 static int __init edac_init(void)
105 edac_printk(KERN_INFO, EDAC_MC, EDAC_VERSION "\n");
107 err = edac_subsys_init();
112 * Harvest and clear any boot/initialization PCI parity errors
114 * FIXME: This only clears errors logged by devices present at time of
115 * module initialization. We should also do an initial clear
116 * of each newly hotplugged device.
118 edac_pci_clear_parity_errors();
120 err = edac_mc_sysfs_init();
126 err = edac_workqueue_setup();
128 edac_printk(KERN_ERR, EDAC_MC, "Failure initializing workqueue\n");
136 edac_mc_sysfs_exit();
146 * module exit/termination function
148 static void __exit edac_exit(void)
152 /* tear down the various subsystems */
153 edac_workqueue_teardown();
154 edac_mc_sysfs_exit();
160 * Inform the kernel of our entry and exit points
162 subsys_initcall(edac_init);
163 module_exit(edac_exit);
165 MODULE_LICENSE("GPL");
166 MODULE_AUTHOR("Doug Thompson www.softwarebitmaker.com, et al");
167 MODULE_DESCRIPTION("Core library routines for EDAC reporting");