pvpanic.c (cc5b392d0f94f27743583140d819fa35a46899db) pvpanic.c (84b0f12a953c4feff9994b1c4583ed18b441f482)
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Pvpanic Device Support
4 *
5 * Copyright (C) 2013 Fujitsu.
6 * Copyright (C) 2018 ZTE.
7 * Copyright (C) 2021 Oracle.
8 */

--- 9 unchanged lines hidden (view full) ---

18#include <linux/cdev.h>
19#include <linux/list.h>
20
21#include <uapi/misc/pvpanic.h>
22
23#include "pvpanic.h"
24
25MODULE_AUTHOR("Mihai Carabas <mihai.carabas@oracle.com>");
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Pvpanic Device Support
4 *
5 * Copyright (C) 2013 Fujitsu.
6 * Copyright (C) 2018 ZTE.
7 * Copyright (C) 2021 Oracle.
8 */

--- 9 unchanged lines hidden (view full) ---

18#include <linux/cdev.h>
19#include <linux/list.h>
20
21#include <uapi/misc/pvpanic.h>
22
23#include "pvpanic.h"
24
25MODULE_AUTHOR("Mihai Carabas <mihai.carabas@oracle.com>");
26MODULE_DESCRIPTION("pvpanic device driver ");
26MODULE_DESCRIPTION("pvpanic device driver");
27MODULE_LICENSE("GPL");
28
29static struct list_head pvpanic_list;
30static spinlock_t pvpanic_lock;
31
32static void
33pvpanic_send_event(unsigned int event)
34{
35 struct pvpanic_instance *pi_cur;
36
37 spin_lock(&pvpanic_lock);
38 list_for_each_entry(pi_cur, &pvpanic_list, list) {
39 if (event & pi_cur->capability & pi_cur->events)
40 iowrite8(event, pi_cur->base);
41 }
42 spin_unlock(&pvpanic_lock);
43}
44
45static int
27MODULE_LICENSE("GPL");
28
29static struct list_head pvpanic_list;
30static spinlock_t pvpanic_lock;
31
32static void
33pvpanic_send_event(unsigned int event)
34{
35 struct pvpanic_instance *pi_cur;
36
37 spin_lock(&pvpanic_lock);
38 list_for_each_entry(pi_cur, &pvpanic_list, list) {
39 if (event & pi_cur->capability & pi_cur->events)
40 iowrite8(event, pi_cur->base);
41 }
42 spin_unlock(&pvpanic_lock);
43}
44
45static int
46pvpanic_panic_notify(struct notifier_block *nb, unsigned long code,
47 void *unused)
46pvpanic_panic_notify(struct notifier_block *nb, unsigned long code, void *unused)
48{
49 unsigned int event = PVPANIC_PANICKED;
50
51 if (kexec_crash_loaded())
52 event = PVPANIC_CRASH_LOADED;
53
54 pvpanic_send_event(event);
55

--- 35 unchanged lines hidden (view full) ---

91}
92EXPORT_SYMBOL_GPL(devm_pvpanic_probe);
93
94static int pvpanic_init(void)
95{
96 INIT_LIST_HEAD(&pvpanic_list);
97 spin_lock_init(&pvpanic_lock);
98
47{
48 unsigned int event = PVPANIC_PANICKED;
49
50 if (kexec_crash_loaded())
51 event = PVPANIC_CRASH_LOADED;
52
53 pvpanic_send_event(event);
54

--- 35 unchanged lines hidden (view full) ---

90}
91EXPORT_SYMBOL_GPL(devm_pvpanic_probe);
92
93static int pvpanic_init(void)
94{
95 INIT_LIST_HEAD(&pvpanic_list);
96 spin_lock_init(&pvpanic_lock);
97
99 atomic_notifier_chain_register(&panic_notifier_list,
100 &pvpanic_panic_nb);
98 atomic_notifier_chain_register(&panic_notifier_list, &pvpanic_panic_nb);
101
102 return 0;
103}
104module_init(pvpanic_init);
105
106static void pvpanic_exit(void)
107{
99
100 return 0;
101}
102module_init(pvpanic_init);
103
104static void pvpanic_exit(void)
105{
108 atomic_notifier_chain_unregister(&panic_notifier_list,
109 &pvpanic_panic_nb);
106 atomic_notifier_chain_unregister(&panic_notifier_list, &pvpanic_panic_nb);
110
111}
112module_exit(pvpanic_exit);
107
108}
109module_exit(pvpanic_exit);