1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef GHES_H 2 #ifndef GHES_H
3 #define GHES_H 3 #define GHES_H
4 4
5 #include <acpi/apei.h> 5 #include <acpi/apei.h>
6 #include <acpi/hed.h> 6 #include <acpi/hed.h>
7 7
8 /* 8 /*
9 * One struct ghes is created for each generic 9 * One struct ghes is created for each generic hardware error source.
10 * It provides the context for APEI hardware e 10 * It provides the context for APEI hardware error timer/IRQ/SCI/NMI
11 * handler. 11 * handler.
12 * 12 *
13 * estatus: memory buffer for error status blo 13 * estatus: memory buffer for error status block, allocated during
14 * HEST parsing. 14 * HEST parsing.
15 */ 15 */
>> 16 #define GHES_TO_CLEAR 0x0001
16 #define GHES_EXITING 0x0002 17 #define GHES_EXITING 0x0002
17 18
18 struct ghes { 19 struct ghes {
19 union { 20 union {
20 struct acpi_hest_generic *gene 21 struct acpi_hest_generic *generic;
21 struct acpi_hest_generic_v2 *g 22 struct acpi_hest_generic_v2 *generic_v2;
22 }; 23 };
23 struct acpi_hest_generic_status *estat 24 struct acpi_hest_generic_status *estatus;
>> 25 u64 buffer_paddr;
24 unsigned long flags; 26 unsigned long flags;
25 union { 27 union {
26 struct list_head list; 28 struct list_head list;
27 struct timer_list timer; 29 struct timer_list timer;
28 unsigned int irq; 30 unsigned int irq;
29 }; 31 };
30 struct device *dev; <<
31 struct list_head elist; <<
32 }; 32 };
33 33
34 struct ghes_estatus_node { 34 struct ghes_estatus_node {
35 struct llist_node llnode; 35 struct llist_node llnode;
36 struct acpi_hest_generic *generic; 36 struct acpi_hest_generic *generic;
37 struct ghes *ghes; 37 struct ghes *ghes;
38 <<
39 int task_work_cpu; <<
40 struct callback_head task_work; <<
41 }; 38 };
42 39
43 struct ghes_estatus_cache { 40 struct ghes_estatus_cache {
44 u32 estatus_len; 41 u32 estatus_len;
45 atomic_t count; 42 atomic_t count;
46 struct acpi_hest_generic *generic; 43 struct acpi_hest_generic *generic;
47 unsigned long long time_in; 44 unsigned long long time_in;
48 struct rcu_head rcu; 45 struct rcu_head rcu;
49 }; 46 };
50 47
51 enum { 48 enum {
52 GHES_SEV_NO = 0x0, 49 GHES_SEV_NO = 0x0,
53 GHES_SEV_CORRECTED = 0x1, 50 GHES_SEV_CORRECTED = 0x1,
54 GHES_SEV_RECOVERABLE = 0x2, 51 GHES_SEV_RECOVERABLE = 0x2,
55 GHES_SEV_PANIC = 0x3, 52 GHES_SEV_PANIC = 0x3,
56 }; 53 };
57 54
58 #ifdef CONFIG_ACPI_APEI_GHES !! 55 /* From drivers/edac/ghes_edac.c */
59 /** !! 56
60 * ghes_register_vendor_record_notifier - regi !! 57 #ifdef CONFIG_EDAC_GHES
61 * records that the kernel would otherwise ign !! 58 void ghes_edac_report_mem_error(struct ghes *ghes, int sev,
62 * @nb: pointer to the notifier_block structur !! 59 struct cper_sec_mem_err *mem_err);
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 60
75 struct list_head *ghes_get_devices(void); !! 61 int ghes_edac_register(struct ghes *ghes, struct device *dev);
>> 62
>> 63 void ghes_edac_unregister(struct ghes *ghes);
76 64
77 void ghes_estatus_pool_region_free(unsigned lo <<
78 #else 65 #else
79 static inline struct list_head *ghes_get_devic !! 66 static inline void ghes_edac_report_mem_error(struct ghes *ghes, int sev,
>> 67 struct cper_sec_mem_err *mem_err)
>> 68 {
>> 69 }
80 70
81 static inline void ghes_estatus_pool_region_fr !! 71 static inline int ghes_edac_register(struct ghes *ghes, struct device *dev)
82 #endif !! 72 {
>> 73 return 0;
>> 74 }
83 75
84 int ghes_estatus_pool_init(unsigned int num_gh !! 76 static inline void ghes_edac_unregister(struct ghes *ghes)
>> 77 {
>> 78 }
>> 79 #endif
85 80
86 static inline int acpi_hest_get_version(struct 81 static inline int acpi_hest_get_version(struct acpi_hest_generic_data *gdata)
87 { 82 {
88 return gdata->revision >> 8; 83 return gdata->revision >> 8;
89 } 84 }
90 85
91 static inline void *acpi_hest_get_payload(stru 86 static inline void *acpi_hest_get_payload(struct acpi_hest_generic_data *gdata)
92 { 87 {
93 if (acpi_hest_get_version(gdata) >= 3) 88 if (acpi_hest_get_version(gdata) >= 3)
94 return (void *)(((struct acpi_ 89 return (void *)(((struct acpi_hest_generic_data_v300 *)(gdata)) + 1);
95 90
96 return gdata + 1; 91 return gdata + 1;
97 } 92 }
98 93
99 static inline int acpi_hest_get_error_length(s 94 static inline int acpi_hest_get_error_length(struct acpi_hest_generic_data *gdata)
100 { 95 {
101 return ((struct acpi_hest_generic_data 96 return ((struct acpi_hest_generic_data *)(gdata))->error_data_length;
102 } 97 }
103 98
104 static inline int acpi_hest_get_size(struct ac 99 static inline int acpi_hest_get_size(struct acpi_hest_generic_data *gdata)
105 { 100 {
106 if (acpi_hest_get_version(gdata) >= 3) 101 if (acpi_hest_get_version(gdata) >= 3)
107 return sizeof(struct acpi_hest 102 return sizeof(struct acpi_hest_generic_data_v300);
108 103
109 return sizeof(struct acpi_hest_generic 104 return sizeof(struct acpi_hest_generic_data);
110 } 105 }
111 106
112 static inline int acpi_hest_get_record_size(st 107 static inline int acpi_hest_get_record_size(struct acpi_hest_generic_data *gdata)
113 { 108 {
114 return (acpi_hest_get_size(gdata) + ac 109 return (acpi_hest_get_size(gdata) + acpi_hest_get_error_length(gdata));
115 } 110 }
116 111
117 static inline void *acpi_hest_get_next(struct 112 static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata)
118 { 113 {
119 return (void *)(gdata) + acpi_hest_get 114 return (void *)(gdata) + acpi_hest_get_record_size(gdata);
120 } 115 }
121 116
122 #define apei_estatus_for_each_section(estatus, 117 #define apei_estatus_for_each_section(estatus, section) \
123 for (section = (struct acpi_hest_gener 118 for (section = (struct acpi_hest_generic_data *)(estatus + 1); \
124 (void *)section - (void *)(estatu 119 (void *)section - (void *)(estatus + 1) < estatus->data_length; \
125 section = acpi_hest_get_next(sect 120 section = acpi_hest_get_next(section))
126 121
127 #ifdef CONFIG_ACPI_APEI_SEA <<
128 int ghes_notify_sea(void); 122 int ghes_notify_sea(void);
129 #else <<
130 static inline int ghes_notify_sea(void) { retu <<
131 #endif <<
132 123
133 struct notifier_block; <<
134 extern void ghes_register_report_chain(struct <<
135 extern void ghes_unregister_report_chain(struc <<
136 #endif /* GHES_H */ 124 #endif /* GHES_H */
137 125
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