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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 | */ | |
16 | #define GHES_TO_CLEAR 0x0001 | |
17 | #define GHES_EXITING 0x0002 | |
18 | ||
19 | struct ghes { | |
42aa5604 TB |
20 | union { |
21 | struct acpi_hest_generic *generic; | |
22 | struct acpi_hest_generic_v2 *generic_v2; | |
23 | }; | |
0a00fd5e | 24 | struct acpi_hest_generic_status *estatus; |
40e06415 MCC |
25 | u64 buffer_paddr; |
26 | unsigned long flags; | |
27 | union { | |
28 | struct list_head list; | |
29 | struct timer_list timer; | |
30 | unsigned int irq; | |
31 | }; | |
32 | }; | |
33 | ||
34 | struct ghes_estatus_node { | |
35 | struct llist_node llnode; | |
36 | struct acpi_hest_generic *generic; | |
21480547 | 37 | struct ghes *ghes; |
40e06415 MCC |
38 | }; |
39 | ||
40 | struct ghes_estatus_cache { | |
41 | u32 estatus_len; | |
42 | atomic_t count; | |
43 | struct acpi_hest_generic *generic; | |
44 | unsigned long long time_in; | |
45 | struct rcu_head rcu; | |
46 | }; | |
47 | ||
48 | enum { | |
49 | GHES_SEV_NO = 0x0, | |
50 | GHES_SEV_CORRECTED = 0x1, | |
51 | GHES_SEV_RECOVERABLE = 0x2, | |
52 | GHES_SEV_PANIC = 0x3, | |
53 | }; | |
21480547 MCC |
54 | |
55 | /* From drivers/edac/ghes_edac.c */ | |
56 | ||
57 | #ifdef CONFIG_EDAC_GHES | |
58 | void ghes_edac_report_mem_error(struct ghes *ghes, int sev, | |
59 | struct cper_sec_mem_err *mem_err); | |
60 | ||
61 | int ghes_edac_register(struct ghes *ghes, struct device *dev); | |
62 | ||
63 | void ghes_edac_unregister(struct ghes *ghes); | |
64 | ||
65 | #else | |
66 | static inline void ghes_edac_report_mem_error(struct ghes *ghes, int sev, | |
67 | struct cper_sec_mem_err *mem_err) | |
68 | { | |
69 | } | |
70 | ||
71 | static inline int ghes_edac_register(struct ghes *ghes, struct device *dev) | |
72 | { | |
73 | return 0; | |
74 | } | |
75 | ||
76 | static inline void ghes_edac_unregister(struct ghes *ghes) | |
77 | { | |
78 | } | |
79 | #endif | |
bbcc2e7b TB |
80 | |
81 | static inline int acpi_hest_get_version(struct acpi_hest_generic_data *gdata) | |
82 | { | |
83 | return gdata->revision >> 8; | |
84 | } | |
85 | ||
86 | static inline void *acpi_hest_get_payload(struct acpi_hest_generic_data *gdata) | |
87 | { | |
88 | if (acpi_hest_get_version(gdata) >= 3) | |
89 | return (void *)(((struct acpi_hest_generic_data_v300 *)(gdata)) + 1); | |
90 | ||
91 | return gdata + 1; | |
92 | } | |
93 | ||
94 | static inline int acpi_hest_get_error_length(struct acpi_hest_generic_data *gdata) | |
95 | { | |
96 | return ((struct acpi_hest_generic_data *)(gdata))->error_data_length; | |
97 | } | |
98 | ||
99 | static inline int acpi_hest_get_size(struct acpi_hest_generic_data *gdata) | |
100 | { | |
101 | if (acpi_hest_get_version(gdata) >= 3) | |
102 | return sizeof(struct acpi_hest_generic_data_v300); | |
103 | ||
104 | return sizeof(struct acpi_hest_generic_data); | |
105 | } | |
106 | ||
107 | static inline int acpi_hest_get_record_size(struct acpi_hest_generic_data *gdata) | |
108 | { | |
109 | return (acpi_hest_get_size(gdata) + acpi_hest_get_error_length(gdata)); | |
110 | } | |
111 | ||
112 | static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata) | |
113 | { | |
114 | return (void *)(gdata) + acpi_hest_get_record_size(gdata); | |
115 | } | |
7edda088 | 116 | |
c4335fdd | 117 | #define apei_estatus_for_each_section(estatus, section) \ |
118 | for (section = (struct acpi_hest_generic_data *)(estatus + 1); \ | |
119 | (void *)section - (void *)(estatus + 1) < estatus->data_length; \ | |
120 | section = acpi_hest_get_next(section)) | |
121 | ||
621f48e4 | 122 | int ghes_notify_sea(void); |
7edda088 TB |
123 | |
124 | #endif /* GHES_H */ |