1/* 2 * apei-internal.h - ACPI Platform Error Interface internal 3 * definations. 4 */ 5 6#ifndef APEI_INTERNAL_H 7#define APEI_INTERNAL_H 8 9#include <linux/cper.h> 10#include <linux/acpi.h> 11 12struct apei_exec_context; 13 14typedef int (*apei_exec_ins_func_t)(struct apei_exec_context *ctx, 15 struct acpi_whea_header *entry); 16 17#define APEI_EXEC_INS_ACCESS_REGISTER 0x0001 18 19struct apei_exec_ins_type { 20 u32 flags; 21 apei_exec_ins_func_t run; 22}; 23 24struct apei_exec_context { 25 u32 ip; 26 u64 value; 27 u64 var1; 28 u64 var2; 29 u64 src_base; 30 u64 dst_base; 31 struct apei_exec_ins_type *ins_table; 32 u32 instructions; 33 struct acpi_whea_header *action_table; 34 u32 entries; 35}; 36 37void apei_exec_ctx_init(struct apei_exec_context *ctx, 38 struct apei_exec_ins_type *ins_table, 39 u32 instructions, 40 struct acpi_whea_header *action_table, 41 u32 entries); 42 43static inline void apei_exec_ctx_set_input(struct apei_exec_context *ctx, 44 u64 input) 45{ 46 ctx->value = input; 47} 48 49static inline u64 apei_exec_ctx_get_output(struct apei_exec_context *ctx) 50{ 51 return ctx->value; 52} 53 54int __apei_exec_run(struct apei_exec_context *ctx, u8 action, bool optional); 55 56static inline int apei_exec_run(struct apei_exec_context *ctx, u8 action) 57{ 58 return __apei_exec_run(ctx, action, 0); 59} 60 61/* It is optional whether the firmware provides the action */ 62static inline int apei_exec_run_optional(struct apei_exec_context *ctx, u8 action) 63{ 64 return __apei_exec_run(ctx, action, 1); 65} 66 67/* Common instruction implementation */ 68 69/* IP has been set in instruction function */ 70#define APEI_EXEC_SET_IP 1 71 72int apei_map_generic_address(struct acpi_generic_address *reg); 73 74static inline void apei_unmap_generic_address(struct acpi_generic_address *reg) 75{ 76 acpi_os_unmap_generic_address(reg); 77} 78 79int apei_read(u64 *val, struct acpi_generic_address *reg); 80int apei_write(u64 val, struct acpi_generic_address *reg); 81 82int __apei_exec_read_register(struct acpi_whea_header *entry, u64 *val); 83int __apei_exec_write_register(struct acpi_whea_header *entry, u64 val); 84int apei_exec_read_register(struct apei_exec_context *ctx, 85 struct acpi_whea_header *entry); 86int apei_exec_read_register_value(struct apei_exec_context *ctx, 87 struct acpi_whea_header *entry); 88int apei_exec_write_register(struct apei_exec_context *ctx, 89 struct acpi_whea_header *entry); 90int apei_exec_write_register_value(struct apei_exec_context *ctx, 91 struct acpi_whea_header *entry); 92int apei_exec_noop(struct apei_exec_context *ctx, 93 struct acpi_whea_header *entry); 94int apei_exec_pre_map_gars(struct apei_exec_context *ctx); 95int apei_exec_post_unmap_gars(struct apei_exec_context *ctx); 96 97struct apei_resources { 98 struct list_head iomem; 99 struct list_head ioport; 100}; 101 102static inline void apei_resources_init(struct apei_resources *resources) 103{ 104 INIT_LIST_HEAD(&resources->iomem); 105 INIT_LIST_HEAD(&resources->ioport); 106} 107 108void apei_resources_fini(struct apei_resources *resources); 109int apei_resources_add(struct apei_resources *resources, 110 unsigned long start, unsigned long size, 111 bool iomem); 112int apei_resources_sub(struct apei_resources *resources1, 113 struct apei_resources *resources2); 114int apei_resources_request(struct apei_resources *resources, 115 const char *desc); 116void apei_resources_release(struct apei_resources *resources); 117int apei_exec_collect_resources(struct apei_exec_context *ctx, 118 struct apei_resources *resources); 119 120struct dentry; 121struct dentry *apei_get_debugfs_dir(void); 122 123#define apei_estatus_for_each_section(estatus, section) \ 124 for (section = (struct acpi_hest_generic_data *)(estatus + 1); \ 125 (void *)section - (void *)estatus < estatus->data_length; \ 126 section = (void *)(section+1) + section->error_data_length) 127 128static inline u32 cper_estatus_len(struct acpi_hest_generic_status *estatus) 129{ 130 if (estatus->raw_data_length) 131 return estatus->raw_data_offset + \ 132 estatus->raw_data_length; 133 else 134 return sizeof(*estatus) + estatus->data_length; 135} 136 137void cper_estatus_print(const char *pfx, 138 const struct acpi_hest_generic_status *estatus); 139int cper_estatus_check_header(const struct acpi_hest_generic_status *estatus); 140int cper_estatus_check(const struct acpi_hest_generic_status *estatus); 141 142int apei_osc_setup(void); 143#endif 144