1 /* SPDX-License-Identifier: GPL-2.0 */
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
13 * estatus: memory buffer for error status block, allocated during
16 #define GHES_EXITING 0x0002
20 struct acpi_hest_generic *generic;
21 struct acpi_hest_generic_v2 *generic_v2;
23 struct acpi_hest_generic_status *estatus;
26 struct list_head list;
27 struct timer_list timer;
31 struct list_head elist;
34 struct ghes_estatus_node {
35 struct llist_node llnode;
36 struct acpi_hest_generic *generic;
40 struct callback_head task_work;
43 struct ghes_estatus_cache {
46 struct acpi_hest_generic *generic;
47 unsigned long long time_in;
53 GHES_SEV_CORRECTED = 0x1,
54 GHES_SEV_RECOVERABLE = 0x2,
58 #ifdef CONFIG_ACPI_APEI_GHES
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.
64 * return 0 : SUCCESS, non-zero : FAIL
66 int ghes_register_vendor_record_notifier(struct notifier_block *nb);
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.
73 void ghes_unregister_vendor_record_notifier(struct notifier_block *nb);
75 struct list_head *ghes_get_devices(void);
77 void ghes_estatus_pool_region_free(unsigned long addr, u32 size);
79 static inline struct list_head *ghes_get_devices(void) { return NULL; }
81 static inline void ghes_estatus_pool_region_free(unsigned long addr, u32 size) { return; }
84 int ghes_estatus_pool_init(unsigned int num_ghes);
86 static inline int acpi_hest_get_version(struct acpi_hest_generic_data *gdata)
88 return gdata->revision >> 8;
91 static inline void *acpi_hest_get_payload(struct acpi_hest_generic_data *gdata)
93 if (acpi_hest_get_version(gdata) >= 3)
94 return (void *)(((struct acpi_hest_generic_data_v300 *)(gdata)) + 1);
99 static inline int acpi_hest_get_error_length(struct acpi_hest_generic_data *gdata)
101 return ((struct acpi_hest_generic_data *)(gdata))->error_data_length;
104 static inline int acpi_hest_get_size(struct acpi_hest_generic_data *gdata)
106 if (acpi_hest_get_version(gdata) >= 3)
107 return sizeof(struct acpi_hest_generic_data_v300);
109 return sizeof(struct acpi_hest_generic_data);
112 static inline int acpi_hest_get_record_size(struct acpi_hest_generic_data *gdata)
114 return (acpi_hest_get_size(gdata) + acpi_hest_get_error_length(gdata));
117 static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata)
119 return (void *)(gdata) + acpi_hest_get_record_size(gdata);
122 #define apei_estatus_for_each_section(estatus, section) \
123 for (section = (struct acpi_hest_generic_data *)(estatus + 1); \
124 (void *)section - (void *)(estatus + 1) < estatus->data_length; \
125 section = acpi_hest_get_next(section))
127 #ifdef CONFIG_ACPI_APEI_SEA
128 int ghes_notify_sea(void);
130 static inline int ghes_notify_sea(void) { return -ENOENT; }
133 struct notifier_block;
134 extern void ghes_register_report_chain(struct notifier_block *nb);
135 extern void ghes_unregister_report_chain(struct notifier_block *nb);