1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 #ifndef GHES_H
3 #define GHES_H
4
5 #include <acpi/apei.h>
6 #include <acpi/hed.h>
7
8 /*
9 * One struct ghes is created for each generic
10 * It provides the context for APEI hardware e
11 * handler.
12 *
13 * estatus: memory buffer for error status blo
14 * HEST parsing.
15 */
16 #define GHES_EXITING 0x0002
17
18 struct ghes {
19 union {
20 struct acpi_hest_generic *gene
21 struct acpi_hest_generic_v2 *g
22 };
23 struct acpi_hest_generic_status *estat
24 unsigned long flags;
25 union {
26 struct list_head list;
27 struct timer_list timer;
28 unsigned int irq;
29 };
30 struct device *dev;
31 struct list_head elist;
32 };
33
34 struct ghes_estatus_node {
35 struct llist_node llnode;
36 struct acpi_hest_generic *generic;
37 struct ghes *ghes;
38
39 int task_work_cpu;
40 struct callback_head task_work;
41 };
42
43 struct ghes_estatus_cache {
44 u32 estatus_len;
45 atomic_t count;
46 struct acpi_hest_generic *generic;
47 unsigned long long time_in;
48 struct rcu_head rcu;
49 };
50
51 enum {
52 GHES_SEV_NO = 0x0,
53 GHES_SEV_CORRECTED = 0x1,
54 GHES_SEV_RECOVERABLE = 0x2,
55 GHES_SEV_PANIC = 0x3,
56 };
57
58 #ifdef CONFIG_ACPI_APEI_GHES
59 /**
60 * ghes_register_vendor_record_notifier - regi
61 * records that the kernel would otherwise ign
62 * @nb: pointer to the notifier_block structur
63 *
64 * return 0 : SUCCESS, non-zero : FAIL
65 */
66 int ghes_register_vendor_record_notifier(struc
67
68 /**
69 * ghes_unregister_vendor_record_notifier - un
70 * registered vendor record notifier.
71 * @nb: pointer to the notifier_block structur
72 */
73 void ghes_unregister_vendor_record_notifier(st
74
75 struct list_head *ghes_get_devices(void);
76
77 void ghes_estatus_pool_region_free(unsigned lo
78 #else
79 static inline struct list_head *ghes_get_devic
80
81 static inline void ghes_estatus_pool_region_fr
82 #endif
83
84 int ghes_estatus_pool_init(unsigned int num_gh
85
86 static inline int acpi_hest_get_version(struct
87 {
88 return gdata->revision >> 8;
89 }
90
91 static inline void *acpi_hest_get_payload(stru
92 {
93 if (acpi_hest_get_version(gdata) >= 3)
94 return (void *)(((struct acpi_
95
96 return gdata + 1;
97 }
98
99 static inline int acpi_hest_get_error_length(s
100 {
101 return ((struct acpi_hest_generic_data
102 }
103
104 static inline int acpi_hest_get_size(struct ac
105 {
106 if (acpi_hest_get_version(gdata) >= 3)
107 return sizeof(struct acpi_hest
108
109 return sizeof(struct acpi_hest_generic
110 }
111
112 static inline int acpi_hest_get_record_size(st
113 {
114 return (acpi_hest_get_size(gdata) + ac
115 }
116
117 static inline void *acpi_hest_get_next(struct
118 {
119 return (void *)(gdata) + acpi_hest_get
120 }
121
122 #define apei_estatus_for_each_section(estatus,
123 for (section = (struct acpi_hest_gener
124 (void *)section - (void *)(estatu
125 section = acpi_hest_get_next(sect
126
127 #ifdef CONFIG_ACPI_APEI_SEA
128 int ghes_notify_sea(void);
129 #else
130 static inline int ghes_notify_sea(void) { retu
131 #endif
132
133 struct notifier_block;
134 extern void ghes_register_report_chain(struct
135 extern void ghes_unregister_report_chain(struc
136 #endif /* GHES_H */
137
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