1/*
 2 * common EDAC components that must be in kernel
 3 *
 4 * Author: Dave Jiang <djiang@mvista.com>
 5 *
 6 * 2007 (c) MontaVista Software, Inc.
 7 * 2010 (c) Advanced Micro Devices Inc.
 8 *	    Borislav Petkov <bp@alien8.de>
 9 *
10 * This file is licensed under the terms of the GNU General Public
11 * License version 2. This program is licensed "as is" without any
12 * warranty of any kind, whether express or implied.
13 *
14 */
15#include <linux/module.h>
16#include <linux/edac.h>
17#include <linux/atomic.h>
18#include <linux/device.h>
19
20int edac_op_state = EDAC_OPSTATE_INVAL;
21EXPORT_SYMBOL_GPL(edac_op_state);
22
23atomic_t edac_handlers = ATOMIC_INIT(0);
24EXPORT_SYMBOL_GPL(edac_handlers);
25
26int edac_err_assert = 0;
27EXPORT_SYMBOL_GPL(edac_err_assert);
28
29int edac_report_status = EDAC_REPORTING_ENABLED;
30EXPORT_SYMBOL_GPL(edac_report_status);
31
32static int __init edac_report_setup(char *str)
33{
34	if (!str)
35		return -EINVAL;
36
37	if (!strncmp(str, "on", 2))
38		set_edac_report_status(EDAC_REPORTING_ENABLED);
39	else if (!strncmp(str, "off", 3))
40		set_edac_report_status(EDAC_REPORTING_DISABLED);
41	else if (!strncmp(str, "force", 5))
42		set_edac_report_status(EDAC_REPORTING_FORCE);
43
44	return 0;
45}
46__setup("edac_report=", edac_report_setup);
47
48/*
49 * called to determine if there is an EDAC driver interested in
50 * knowing an event (such as NMI) occurred
51 */
52int edac_handler_set(void)
53{
54	if (edac_op_state == EDAC_OPSTATE_POLL)
55		return 0;
56
57	return atomic_read(&edac_handlers);
58}
59EXPORT_SYMBOL_GPL(edac_handler_set);
60
61/*
62 * handler for NMI type of interrupts to assert error
63 */
64void edac_atomic_assert_error(void)
65{
66	edac_err_assert++;
67}
68EXPORT_SYMBOL_GPL(edac_atomic_assert_error);