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_EXITING 0x0002 16 #define GHES_EXITING 0x0002
17 17
18 struct ghes { 18 struct ghes {
19 union { 19 union {
20 struct acpi_hest_generic *gene 20 struct acpi_hest_generic *generic;
21 struct acpi_hest_generic_v2 *g 21 struct acpi_hest_generic_v2 *generic_v2;
22 }; 22 };
23 struct acpi_hest_generic_status *estat 23 struct acpi_hest_generic_status *estatus;
24 unsigned long flags; 24 unsigned long flags;
25 union { 25 union {
26 struct list_head list; 26 struct list_head list;
27 struct timer_list timer; 27 struct timer_list timer;
28 unsigned int irq; 28 unsigned int irq;
29 }; 29 };
30 struct device *dev; <<
31 struct list_head elist; <<
32 }; 30 };
33 31
34 struct ghes_estatus_node { 32 struct ghes_estatus_node {
35 struct llist_node llnode; 33 struct llist_node llnode;
36 struct acpi_hest_generic *generic; 34 struct acpi_hest_generic *generic;
37 struct ghes *ghes; 35 struct ghes *ghes;
38 36
39 int task_work_cpu; 37 int task_work_cpu;
40 struct callback_head task_work; 38 struct callback_head task_work;
41 }; 39 };
42 40
43 struct ghes_estatus_cache { 41 struct ghes_estatus_cache {
44 u32 estatus_len; 42 u32 estatus_len;
45 atomic_t count; 43 atomic_t count;
46 struct acpi_hest_generic *generic; 44 struct acpi_hest_generic *generic;
47 unsigned long long time_in; 45 unsigned long long time_in;
48 struct rcu_head rcu; 46 struct rcu_head rcu;
49 }; 47 };
50 48
51 enum { 49 enum {
52 GHES_SEV_NO = 0x0, 50 GHES_SEV_NO = 0x0,
53 GHES_SEV_CORRECTED = 0x1, 51 GHES_SEV_CORRECTED = 0x1,
54 GHES_SEV_RECOVERABLE = 0x2, 52 GHES_SEV_RECOVERABLE = 0x2,
55 GHES_SEV_PANIC = 0x3, 53 GHES_SEV_PANIC = 0x3,
56 }; 54 };
57 55
58 #ifdef CONFIG_ACPI_APEI_GHES 56 #ifdef CONFIG_ACPI_APEI_GHES
59 /** 57 /**
60 * ghes_register_vendor_record_notifier - regi 58 * ghes_register_vendor_record_notifier - register a notifier for vendor
61 * records that the kernel would otherwise ign 59 * records that the kernel would otherwise ignore.
62 * @nb: pointer to the notifier_block structur 60 * @nb: pointer to the notifier_block structure of the event handler.
63 * 61 *
64 * return 0 : SUCCESS, non-zero : FAIL 62 * return 0 : SUCCESS, non-zero : FAIL
65 */ 63 */
66 int ghes_register_vendor_record_notifier(struc 64 int ghes_register_vendor_record_notifier(struct notifier_block *nb);
67 65
68 /** 66 /**
69 * ghes_unregister_vendor_record_notifier - un 67 * ghes_unregister_vendor_record_notifier - unregister the previously
70 * registered vendor record notifier. 68 * registered vendor record notifier.
71 * @nb: pointer to the notifier_block structur 69 * @nb: pointer to the notifier_block structure of the vendor record handler.
72 */ 70 */
73 void ghes_unregister_vendor_record_notifier(st 71 void ghes_unregister_vendor_record_notifier(struct notifier_block *nb);
>> 72 #endif
>> 73
>> 74 int ghes_estatus_pool_init(unsigned int num_ghes);
>> 75
>> 76 /* From drivers/edac/ghes_edac.c */
74 77
75 struct list_head *ghes_get_devices(void); !! 78 #ifdef CONFIG_EDAC_GHES
>> 79 void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err);
>> 80
>> 81 int ghes_edac_register(struct ghes *ghes, struct device *dev);
>> 82
>> 83 void ghes_edac_unregister(struct ghes *ghes);
76 84
77 void ghes_estatus_pool_region_free(unsigned lo <<
78 #else 85 #else
79 static inline struct list_head *ghes_get_devic !! 86 static inline void ghes_edac_report_mem_error(int sev,
>> 87 struct cper_sec_mem_err *mem_err)
>> 88 {
>> 89 }
80 90
81 static inline void ghes_estatus_pool_region_fr !! 91 static inline int ghes_edac_register(struct ghes *ghes, struct device *dev)
82 #endif !! 92 {
>> 93 return -ENODEV;
>> 94 }
83 95
84 int ghes_estatus_pool_init(unsigned int num_gh !! 96 static inline void ghes_edac_unregister(struct ghes *ghes)
>> 97 {
>> 98 }
>> 99 #endif
85 100
86 static inline int acpi_hest_get_version(struct 101 static inline int acpi_hest_get_version(struct acpi_hest_generic_data *gdata)
87 { 102 {
88 return gdata->revision >> 8; 103 return gdata->revision >> 8;
89 } 104 }
90 105
91 static inline void *acpi_hest_get_payload(stru 106 static inline void *acpi_hest_get_payload(struct acpi_hest_generic_data *gdata)
92 { 107 {
93 if (acpi_hest_get_version(gdata) >= 3) 108 if (acpi_hest_get_version(gdata) >= 3)
94 return (void *)(((struct acpi_ 109 return (void *)(((struct acpi_hest_generic_data_v300 *)(gdata)) + 1);
95 110
96 return gdata + 1; 111 return gdata + 1;
97 } 112 }
98 113
99 static inline int acpi_hest_get_error_length(s 114 static inline int acpi_hest_get_error_length(struct acpi_hest_generic_data *gdata)
100 { 115 {
101 return ((struct acpi_hest_generic_data 116 return ((struct acpi_hest_generic_data *)(gdata))->error_data_length;
102 } 117 }
103 118
104 static inline int acpi_hest_get_size(struct ac 119 static inline int acpi_hest_get_size(struct acpi_hest_generic_data *gdata)
105 { 120 {
106 if (acpi_hest_get_version(gdata) >= 3) 121 if (acpi_hest_get_version(gdata) >= 3)
107 return sizeof(struct acpi_hest 122 return sizeof(struct acpi_hest_generic_data_v300);
108 123
109 return sizeof(struct acpi_hest_generic 124 return sizeof(struct acpi_hest_generic_data);
110 } 125 }
111 126
112 static inline int acpi_hest_get_record_size(st 127 static inline int acpi_hest_get_record_size(struct acpi_hest_generic_data *gdata)
113 { 128 {
114 return (acpi_hest_get_size(gdata) + ac 129 return (acpi_hest_get_size(gdata) + acpi_hest_get_error_length(gdata));
115 } 130 }
116 131
117 static inline void *acpi_hest_get_next(struct 132 static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata)
118 { 133 {
119 return (void *)(gdata) + acpi_hest_get 134 return (void *)(gdata) + acpi_hest_get_record_size(gdata);
120 } 135 }
121 136
122 #define apei_estatus_for_each_section(estatus, 137 #define apei_estatus_for_each_section(estatus, section) \
123 for (section = (struct acpi_hest_gener 138 for (section = (struct acpi_hest_generic_data *)(estatus + 1); \
124 (void *)section - (void *)(estatu 139 (void *)section - (void *)(estatus + 1) < estatus->data_length; \
125 section = acpi_hest_get_next(sect 140 section = acpi_hest_get_next(section))
126 141
127 #ifdef CONFIG_ACPI_APEI_SEA 142 #ifdef CONFIG_ACPI_APEI_SEA
128 int ghes_notify_sea(void); 143 int ghes_notify_sea(void);
129 #else 144 #else
130 static inline int ghes_notify_sea(void) { retu 145 static inline int ghes_notify_sea(void) { return -ENOENT; }
131 #endif 146 #endif
132 147
133 struct notifier_block; <<
134 extern void ghes_register_report_chain(struct <<
135 extern void ghes_unregister_report_chain(struc <<
136 #endif /* GHES_H */ 148 #endif /* GHES_H */
137 149
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.