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1/* SPDX-License-Identifier: GPL-2.0 */
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 hardware error source.
10 * It provides the context for APEI hardware error timer/IRQ/SCI/NMI
11 * handler.
12 *
13 * estatus: memory buffer for error status block, allocated during
14 * HEST parsing.
15 */
16#define GHES_EXITING 0x0002
17
18struct ghes {
19 union {
20 struct acpi_hest_generic *generic;
21 struct acpi_hest_generic_v2 *generic_v2;
22 };
23 struct acpi_hest_generic_status *estatus;
24 unsigned long flags;
25 union {
26 struct list_head list;
27 struct timer_list timer;
28 unsigned int irq;
29 };
30};
31
32struct ghes_estatus_node {
33 struct llist_node llnode;
34 struct acpi_hest_generic *generic;
35 struct ghes *ghes;
36
37 int task_work_cpu;
38 struct callback_head task_work;
39};
40
41struct ghes_estatus_cache {
42 u32 estatus_len;
43 atomic_t count;
44 struct acpi_hest_generic *generic;
45 unsigned long long time_in;
46 struct rcu_head rcu;
47};
48
49enum {
50 GHES_SEV_NO = 0x0,
51 GHES_SEV_CORRECTED = 0x1,
52 GHES_SEV_RECOVERABLE = 0x2,
53 GHES_SEV_PANIC = 0x3,
54};
55
56int ghes_estatus_pool_init(int num_ghes);
57
58/* From drivers/edac/ghes_edac.c */
59
60#ifdef CONFIG_EDAC_GHES
61void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err);
62
63int ghes_edac_register(struct ghes *ghes, struct device *dev);
64
65void ghes_edac_unregister(struct ghes *ghes);
66
67#else
68static inline void ghes_edac_report_mem_error(int sev,
69 struct cper_sec_mem_err *mem_err)
70{
71}
72
73static inline int ghes_edac_register(struct ghes *ghes, struct device *dev)
74{
75 return -ENODEV;
76}
77
78static inline void ghes_edac_unregister(struct ghes *ghes)
79{
80}
81#endif
82
83static inline int acpi_hest_get_version(struct acpi_hest_generic_data *gdata)
84{
85 return gdata->revision >> 8;
86}
87
88static inline void *acpi_hest_get_payload(struct acpi_hest_generic_data *gdata)
89{
90 if (acpi_hest_get_version(gdata) >= 3)
91 return (void *)(((struct acpi_hest_generic_data_v300 *)(gdata)) + 1);
92
93 return gdata + 1;
94}
95
96static inline int acpi_hest_get_error_length(struct acpi_hest_generic_data *gdata)
97{
98 return ((struct acpi_hest_generic_data *)(gdata))->error_data_length;
99}
100
101static inline int acpi_hest_get_size(struct acpi_hest_generic_data *gdata)
102{
103 if (acpi_hest_get_version(gdata) >= 3)
104 return sizeof(struct acpi_hest_generic_data_v300);
105
106 return sizeof(struct acpi_hest_generic_data);
107}
108
109static inline int acpi_hest_get_record_size(struct acpi_hest_generic_data *gdata)
110{
111 return (acpi_hest_get_size(gdata) + acpi_hest_get_error_length(gdata));
112}
113
114static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata)
115{
116 return (void *)(gdata) + acpi_hest_get_record_size(gdata);
117}
118
119#define apei_estatus_for_each_section(estatus, section) \
120 for (section = (struct acpi_hest_generic_data *)(estatus + 1); \
121 (void *)section - (void *)(estatus + 1) < estatus->data_length; \
122 section = acpi_hest_get_next(section))
123
124#ifdef CONFIG_ACPI_APEI_SEA
125int ghes_notify_sea(void);
126#else
127static inline int ghes_notify_sea(void) { return -ENOENT; }
128#endif
129
130#endif /* GHES_H */
1/* SPDX-License-Identifier: GPL-2.0 */
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 hardware error source.
10 * It provides the context for APEI hardware error timer/IRQ/SCI/NMI
11 * handler.
12 *
13 * estatus: memory buffer for error status block, allocated during
14 * HEST parsing.
15 */
16#define GHES_EXITING 0x0002
17
18struct ghes {
19 union {
20 struct acpi_hest_generic *generic;
21 struct acpi_hest_generic_v2 *generic_v2;
22 };
23 struct acpi_hest_generic_status *estatus;
24 unsigned long flags;
25 union {
26 struct list_head list;
27 struct timer_list timer;
28 unsigned int irq;
29 };
30};
31
32struct ghes_estatus_node {
33 struct llist_node llnode;
34 struct acpi_hest_generic *generic;
35 struct ghes *ghes;
36
37 int task_work_cpu;
38 struct callback_head task_work;
39};
40
41struct ghes_estatus_cache {
42 u32 estatus_len;
43 atomic_t count;
44 struct acpi_hest_generic *generic;
45 unsigned long long time_in;
46 struct rcu_head rcu;
47};
48
49enum {
50 GHES_SEV_NO = 0x0,
51 GHES_SEV_CORRECTED = 0x1,
52 GHES_SEV_RECOVERABLE = 0x2,
53 GHES_SEV_PANIC = 0x3,
54};
55
56#ifdef CONFIG_ACPI_APEI_GHES
57/**
58 * ghes_register_vendor_record_notifier - register a notifier for vendor
59 * records that the kernel would otherwise ignore.
60 * @nb: pointer to the notifier_block structure of the event handler.
61 *
62 * return 0 : SUCCESS, non-zero : FAIL
63 */
64int ghes_register_vendor_record_notifier(struct notifier_block *nb);
65
66/**
67 * ghes_unregister_vendor_record_notifier - unregister the previously
68 * registered vendor record notifier.
69 * @nb: pointer to the notifier_block structure of the vendor record handler.
70 */
71void ghes_unregister_vendor_record_notifier(struct notifier_block *nb);
72#endif
73
74int ghes_estatus_pool_init(int num_ghes);
75
76/* From drivers/edac/ghes_edac.c */
77
78#ifdef CONFIG_EDAC_GHES
79void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err);
80
81int ghes_edac_register(struct ghes *ghes, struct device *dev);
82
83void ghes_edac_unregister(struct ghes *ghes);
84
85#else
86static inline void ghes_edac_report_mem_error(int sev,
87 struct cper_sec_mem_err *mem_err)
88{
89}
90
91static inline int ghes_edac_register(struct ghes *ghes, struct device *dev)
92{
93 return -ENODEV;
94}
95
96static inline void ghes_edac_unregister(struct ghes *ghes)
97{
98}
99#endif
100
101static inline int acpi_hest_get_version(struct acpi_hest_generic_data *gdata)
102{
103 return gdata->revision >> 8;
104}
105
106static inline void *acpi_hest_get_payload(struct acpi_hest_generic_data *gdata)
107{
108 if (acpi_hest_get_version(gdata) >= 3)
109 return (void *)(((struct acpi_hest_generic_data_v300 *)(gdata)) + 1);
110
111 return gdata + 1;
112}
113
114static inline int acpi_hest_get_error_length(struct acpi_hest_generic_data *gdata)
115{
116 return ((struct acpi_hest_generic_data *)(gdata))->error_data_length;
117}
118
119static inline int acpi_hest_get_size(struct acpi_hest_generic_data *gdata)
120{
121 if (acpi_hest_get_version(gdata) >= 3)
122 return sizeof(struct acpi_hest_generic_data_v300);
123
124 return sizeof(struct acpi_hest_generic_data);
125}
126
127static inline int acpi_hest_get_record_size(struct acpi_hest_generic_data *gdata)
128{
129 return (acpi_hest_get_size(gdata) + acpi_hest_get_error_length(gdata));
130}
131
132static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata)
133{
134 return (void *)(gdata) + acpi_hest_get_record_size(gdata);
135}
136
137#define apei_estatus_for_each_section(estatus, section) \
138 for (section = (struct acpi_hest_generic_data *)(estatus + 1); \
139 (void *)section - (void *)(estatus + 1) < estatus->data_length; \
140 section = acpi_hest_get_next(section))
141
142#ifdef CONFIG_ACPI_APEI_SEA
143int ghes_notify_sea(void);
144#else
145static inline int ghes_notify_sea(void) { return -ENOENT; }
146#endif
147
148#endif /* GHES_H */