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);
31 if (val < 0 || val > 4)
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");
46 /* scope is to module level only */
47 struct workqueue_struct *edac_workqueue;
50 * edac_op_state_to_string()
52 char *edac_op_state_to_string(int opstate)
54 if (opstate == OP_RUNNING_POLL)
56 else if (opstate == OP_RUNNING_INTERRUPT)
58 else if (opstate == OP_RUNNING_POLL_INTR)
60 else if (opstate == OP_ALLOC)
62 else if (opstate == OP_OFFLINE)
69 * edac_workqueue_setup
70 * initialize the edac work queue for polling operations
72 static int edac_workqueue_setup(void)
74 edac_workqueue = create_singlethread_workqueue("edac-poller");
75 if (edac_workqueue == NULL)
82 * edac_workqueue_teardown
83 * teardown the edac workqueue
85 static void edac_workqueue_teardown(void)
88 flush_workqueue(edac_workqueue);
89 destroy_workqueue(edac_workqueue);
90 edac_workqueue = NULL;
96 * module initialization entry point
98 static int __init edac_init(void)
102 edac_printk(KERN_INFO, EDAC_MC, EDAC_VERSION "\n");
105 * Harvest and clear any boot/initialization PCI parity errors
107 * FIXME: This only clears errors logged by devices present at time of
108 * module initialization. We should also do an initial clear
109 * of each newly hotplugged device.
111 edac_pci_clear_parity_errors();
113 err = edac_mc_sysfs_init();
119 /* Setup/Initialize the workq for this core */
120 err = edac_workqueue_setup();
122 edac_printk(KERN_ERR, EDAC_MC, "init WorkQueue failure\n");
134 * module exit/termination function
136 static void __exit edac_exit(void)
140 /* tear down the various subsystems */
141 edac_workqueue_teardown();
142 edac_mc_sysfs_exit();
147 * Inform the kernel of our entry and exit points
149 subsys_initcall(edac_init);
150 module_exit(edac_exit);
152 MODULE_LICENSE("GPL");
153 MODULE_AUTHOR("Doug Thompson www.softwarebitmaker.com, et al");
154 MODULE_DESCRIPTION("Core library routines for EDAC reporting");