1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef GHES_H 3 #define GHES_H 4 5 #include <acpi/apei.h> 6 #include <acpi/hed.h> 7 8 /* 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 11 * handler. 12 * 13 * estatus: memory buffer for error status block, allocated during 14 * HEST parsing. 15 */ 16 #define GHES_TO_CLEAR 0x0001 17 #define GHES_EXITING 0x0002 18 19 struct ghes { 20 union { 21 struct acpi_hest_generic *generic; 22 struct acpi_hest_generic_v2 *generic_v2; 23 }; 24 struct acpi_hest_generic_status *estatus; 25 u64 buffer_paddr; 26 unsigned long flags; 27 union { 28 struct list_head list; 29 struct timer_list timer; 30 unsigned int irq; 31 }; 32 }; 33 34 struct ghes_estatus_node { 35 struct llist_node llnode; 36 struct acpi_hest_generic *generic; 37 struct ghes *ghes; 38 }; 39 40 struct ghes_estatus_cache { 41 u32 estatus_len; 42 atomic_t count; 43 struct acpi_hest_generic *generic; 44 unsigned long long time_in; 45 struct rcu_head rcu; 46 }; 47 48 enum { 49 GHES_SEV_NO = 0x0, 50 GHES_SEV_CORRECTED = 0x1, 51 GHES_SEV_RECOVERABLE = 0x2, 52 GHES_SEV_PANIC = 0x3, 53 }; 54 55 /* From drivers/edac/ghes_edac.c */ 56 57 #ifdef CONFIG_EDAC_GHES 58 void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err); 59 60 int ghes_edac_register(struct ghes *ghes, struct device *dev); 61 62 void ghes_edac_unregister(struct ghes *ghes); 63 64 #else 65 static inline void ghes_edac_report_mem_error(int sev, 66 struct cper_sec_mem_err *mem_err) 67 { 68 } 69 70 static inline int ghes_edac_register(struct ghes *ghes, struct device *dev) 71 { 72 return -ENODEV; 73 } 74 75 static inline void ghes_edac_unregister(struct ghes *ghes) 76 { 77 } 78 #endif 79 80 static inline int acpi_hest_get_version(struct acpi_hest_generic_data *gdata) 81 { 82 return gdata->revision >> 8; 83 } 84 85 static inline void *acpi_hest_get_payload(struct acpi_hest_generic_data *gdata) 86 { 87 if (acpi_hest_get_version(gdata) >= 3) 88 return (void *)(((struct acpi_hest_generic_data_v300 *)(gdata)) + 1); 89 90 return gdata + 1; 91 } 92 93 static inline int acpi_hest_get_error_length(struct acpi_hest_generic_data *gdata) 94 { 95 return ((struct acpi_hest_generic_data *)(gdata))->error_data_length; 96 } 97 98 static inline int acpi_hest_get_size(struct acpi_hest_generic_data *gdata) 99 { 100 if (acpi_hest_get_version(gdata) >= 3) 101 return sizeof(struct acpi_hest_generic_data_v300); 102 103 return sizeof(struct acpi_hest_generic_data); 104 } 105 106 static inline int acpi_hest_get_record_size(struct acpi_hest_generic_data *gdata) 107 { 108 return (acpi_hest_get_size(gdata) + acpi_hest_get_error_length(gdata)); 109 } 110 111 static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata) 112 { 113 return (void *)(gdata) + acpi_hest_get_record_size(gdata); 114 } 115 116 #define apei_estatus_for_each_section(estatus, section) \ 117 for (section = (struct acpi_hest_generic_data *)(estatus + 1); \ 118 (void *)section - (void *)(estatus + 1) < estatus->data_length; \ 119 section = acpi_hest_get_next(section)) 120 121 #ifdef CONFIG_ACPI_APEI_SEA 122 int ghes_notify_sea(void); 123 #else 124 static inline int ghes_notify_sea(void) { return -ENOENT; } 125 #endif 126 127 #endif /* GHES_H */ 128