Commit | Line | Data |
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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 | }; | |
9057a3f7 JH |
30 | struct device *dev; |
31 | struct list_head elist; | |
40e06415 MCC |
32 | }; |
33 | ||
34 | struct ghes_estatus_node { | |
35 | struct llist_node llnode; | |
36 | struct acpi_hest_generic *generic; | |
21480547 | 37 | struct ghes *ghes; |
7f17b4a1 JM |
38 | |
39 | int task_work_cpu; | |
40 | struct callback_head task_work; | |
40e06415 MCC |
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 | }; | |
21480547 | 57 | |
9aa9cf3e SJ |
58 | #ifdef CONFIG_ACPI_APEI_GHES |
59 | /** | |
60 | * ghes_register_vendor_record_notifier - register a notifier for vendor | |
61 | * records that the kernel would otherwise ignore. | |
62 | * @nb: pointer to the notifier_block structure of the event handler. | |
63 | * | |
64 | * return 0 : SUCCESS, non-zero : FAIL | |
65 | */ | |
66 | int ghes_register_vendor_record_notifier(struct notifier_block *nb); | |
67 | ||
68 | /** | |
69 | * ghes_unregister_vendor_record_notifier - unregister the previously | |
70 | * registered vendor record notifier. | |
71 | * @nb: pointer to the notifier_block structure of the vendor record handler. | |
72 | */ | |
73 | void ghes_unregister_vendor_record_notifier(struct notifier_block *nb); | |
21480547 | 74 | |
9057a3f7 | 75 | struct list_head *ghes_get_devices(void); |
21480547 | 76 | #else |
9057a3f7 | 77 | static inline struct list_head *ghes_get_devices(void) { return NULL; } |
21480547 | 78 | #endif |
bbcc2e7b | 79 | |
7adcadb9 | 80 | int ghes_estatus_pool_init(unsigned int num_ghes); |
802e7f1d | 81 | |
bbcc2e7b TB |
82 | static inline int acpi_hest_get_version(struct acpi_hest_generic_data *gdata) |
83 | { | |
84 | return gdata->revision >> 8; | |
85 | } | |
86 | ||
87 | static inline void *acpi_hest_get_payload(struct acpi_hest_generic_data *gdata) | |
88 | { | |
89 | if (acpi_hest_get_version(gdata) >= 3) | |
90 | return (void *)(((struct acpi_hest_generic_data_v300 *)(gdata)) + 1); | |
91 | ||
92 | return gdata + 1; | |
93 | } | |
94 | ||
95 | static inline int acpi_hest_get_error_length(struct acpi_hest_generic_data *gdata) | |
96 | { | |
97 | return ((struct acpi_hest_generic_data *)(gdata))->error_data_length; | |
98 | } | |
99 | ||
100 | static inline int acpi_hest_get_size(struct acpi_hest_generic_data *gdata) | |
101 | { | |
102 | if (acpi_hest_get_version(gdata) >= 3) | |
103 | return sizeof(struct acpi_hest_generic_data_v300); | |
104 | ||
105 | return sizeof(struct acpi_hest_generic_data); | |
106 | } | |
107 | ||
108 | static inline int acpi_hest_get_record_size(struct acpi_hest_generic_data *gdata) | |
109 | { | |
110 | return (acpi_hest_get_size(gdata) + acpi_hest_get_error_length(gdata)); | |
111 | } | |
112 | ||
113 | static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata) | |
114 | { | |
115 | return (void *)(gdata) + acpi_hest_get_record_size(gdata); | |
116 | } | |
7edda088 | 117 | |
c4335fdd | 118 | #define apei_estatus_for_each_section(estatus, section) \ |
119 | for (section = (struct acpi_hest_generic_data *)(estatus + 1); \ | |
120 | (void *)section - (void *)(estatus + 1) < estatus->data_length; \ | |
121 | section = acpi_hest_get_next(section)) | |
122 | ||
1035a078 | 123 | #ifdef CONFIG_ACPI_APEI_SEA |
621f48e4 | 124 | int ghes_notify_sea(void); |
1035a078 DG |
125 | #else |
126 | static inline int ghes_notify_sea(void) { return -ENOENT; } | |
127 | #endif | |
7edda088 | 128 | |
8e40612f JH |
129 | struct notifier_block; |
130 | extern void ghes_register_report_chain(struct notifier_block *nb); | |
131 | extern void ghes_unregister_report_chain(struct notifier_block *nb); | |
7edda088 | 132 | #endif /* GHES_H */ |