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