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