1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * apei-internal.h - ACPI Platform Error Interface internal 4 * definitions. 5 */ 6 7#ifndef APEI_INTERNAL_H 8#define APEI_INTERNAL_H 9 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 123static inline u32 cper_estatus_len(struct acpi_hest_generic_status *estatus) 124{ 125 if (estatus->raw_data_length) 126 return estatus->raw_data_offset + \ 127 estatus->raw_data_length; 128 else 129 return sizeof(*estatus) + estatus->data_length; 130} 131 132int apei_osc_setup(void); 133 134int einj_get_available_error_type(u32 *type); 135int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, u64 param3, 136 u64 param4); 137int einj_cxl_rch_error_inject(u32 type, u32 flags, u64 param1, u64 param2, 138 u64 param3, u64 param4); 139bool einj_is_cxl_error_type(u64 type); 140int einj_validate_error_type(u64 type); 141 142#ifndef ACPI_EINJ_CXL_CACHE_CORRECTABLE 143#define ACPI_EINJ_CXL_CACHE_CORRECTABLE BIT(12) 144#define ACPI_EINJ_CXL_CACHE_UNCORRECTABLE BIT(13) 145#define ACPI_EINJ_CXL_CACHE_FATAL BIT(14) 146#define ACPI_EINJ_CXL_MEM_CORRECTABLE BIT(15) 147#define ACPI_EINJ_CXL_MEM_UNCORRECTABLE BIT(16) 148#define ACPI_EINJ_CXL_MEM_FATAL BIT(17) 149#endif 150 151#endif 152