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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
7edda088 TB |
2 | #ifndef GHES_H |
3 | #define GHES_H | |
4 | ||
40e06415 MCC |
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 | */ | |
40e06415 MCC |
16 | #define GHES_EXITING 0x0002 |
17 | ||
18 | struct ghes { | |
42aa5604 TB |
19 | union { |
20 | struct acpi_hest_generic *generic; | |
21 | struct acpi_hest_generic_v2 *generic_v2; | |
22 | }; | |
0a00fd5e | 23 | struct acpi_hest_generic_status *estatus; |
40e06415 MCC |
24 | unsigned long flags; |
25 | union { | |
26 | struct list_head list; | |
27 | struct timer_list timer; | |
28 | unsigned int irq; | |
29 | }; | |
30 | }; | |
31 | ||
32 | struct ghes_estatus_node { | |
33 | struct llist_node llnode; | |
34 | struct acpi_hest_generic *generic; | |
21480547 | 35 | struct ghes *ghes; |
7f17b4a1 JM |
36 | |
37 | int task_work_cpu; | |
38 | struct callback_head task_work; | |
40e06415 MCC |
39 | }; |
40 | ||
41 | struct 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 | ||
49 | enum { | |
50 | GHES_SEV_NO = 0x0, | |
51 | GHES_SEV_CORRECTED = 0x1, | |
52 | GHES_SEV_RECOVERABLE = 0x2, | |
53 | GHES_SEV_PANIC = 0x3, | |
54 | }; | |
21480547 | 55 | |
9aa9cf3e SJ |
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 | */ | |
64 | int 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 | */ | |
71 | void ghes_unregister_vendor_record_notifier(struct notifier_block *nb); | |
72 | #endif | |
73 | ||
fb7be08f | 74 | int ghes_estatus_pool_init(int num_ghes); |
e147133a | 75 | |
21480547 MCC |
76 | /* From drivers/edac/ghes_edac.c */ |
77 | ||
78 | #ifdef CONFIG_EDAC_GHES | |
305d0e00 | 79 | void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err); |
21480547 MCC |
80 | |
81 | int ghes_edac_register(struct ghes *ghes, struct device *dev); | |
82 | ||
83 | void ghes_edac_unregister(struct ghes *ghes); | |
84 | ||
85 | #else | |
305d0e00 | 86 | static inline void ghes_edac_report_mem_error(int sev, |
21480547 MCC |
87 | struct cper_sec_mem_err *mem_err) |
88 | { | |
89 | } | |
90 | ||
91 | static inline int ghes_edac_register(struct ghes *ghes, struct device *dev) | |
92 | { | |
cc7f3f13 | 93 | return -ENODEV; |
21480547 MCC |
94 | } |
95 | ||
96 | static inline void ghes_edac_unregister(struct ghes *ghes) | |
97 | { | |
98 | } | |
99 | #endif | |
bbcc2e7b TB |
100 | |
101 | static inline int acpi_hest_get_version(struct acpi_hest_generic_data *gdata) | |
102 | { | |
103 | return gdata->revision >> 8; | |
104 | } | |
105 | ||
106 | static 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 | ||
114 | static 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 | ||
119 | static 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 | ||
127 | static 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 | ||
132 | static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata) | |
133 | { | |
134 | return (void *)(gdata) + acpi_hest_get_record_size(gdata); | |
135 | } | |
7edda088 | 136 | |
c4335fdd | 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 | ||
1035a078 | 142 | #ifdef CONFIG_ACPI_APEI_SEA |
621f48e4 | 143 | int ghes_notify_sea(void); |
1035a078 DG |
144 | #else |
145 | static inline int ghes_notify_sea(void) { return -ENOENT; } | |
146 | #endif | |
7edda088 TB |
147 | |
148 | #endif /* GHES_H */ |