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 struct apei_exec_context;
10
11 typedef int (*apei_exec_ins_func_t)(struct apei_exec_context *ctx,
12 struct acpi_whea_header *entry);
13
14 #define APEI_EXEC_INS_ACCESS_REGISTER 0x0001
15
16 struct apei_exec_ins_type {
17 u32 flags;
18 apei_exec_ins_func_t run;
19 };
20
21 struct apei_exec_context {
22 u32 ip;
23 u64 value;
24 u64 var1;
25 u64 var2;
26 u64 src_base;
27 u64 dst_base;
28 struct apei_exec_ins_type *ins_table;
29 u32 instructions;
30 struct acpi_whea_header *action_table;
31 u32 entries;
32 };
33
34 int apei_exec_ctx_init(struct apei_exec_context *ctx,
35 struct apei_exec_ins_type *ins_table,
36 u32 instructions,
37 struct acpi_whea_header *action_table,
38 u32 entries);
39
apei_exec_ctx_set_input(struct apei_exec_context * ctx,u64 input)40 static inline void apei_exec_ctx_set_input(struct apei_exec_context *ctx,
41 u64 input)
42 {
43 ctx->value = input;
44 }
45
apei_exec_ctx_get_output(struct apei_exec_context * ctx)46 static inline u64 apei_exec_ctx_get_output(struct apei_exec_context *ctx)
47 {
48 return ctx->value;
49 }
50
51 int __apei_exec_run(struct apei_exec_context *ctx, u8 action, bool_t optional);
52
apei_exec_run(struct apei_exec_context * ctx,u8 action)53 static inline int apei_exec_run(struct apei_exec_context *ctx, u8 action)
54 {
55 return __apei_exec_run(ctx, action, 0);
56 }
57
58 /* It is optional whether the firmware provides the action */
apei_exec_run_optional(struct apei_exec_context * ctx,u8 action)59 static inline int apei_exec_run_optional(struct apei_exec_context *ctx, u8 action)
60 {
61 return __apei_exec_run(ctx, action, 1);
62 }
63
64 /* Common instruction implementation */
65
66 /* IP has been set in instruction function */
67 #define APEI_EXEC_SET_IP 1
68
69 int __apei_exec_read_register(struct acpi_whea_header *entry, u64 *val);
70 int __apei_exec_write_register(struct acpi_whea_header *entry, u64 val);
71 int apei_exec_read_register(struct apei_exec_context *ctx,
72 struct acpi_whea_header *entry);
73 int apei_exec_read_register_value(struct apei_exec_context *ctx,
74 struct acpi_whea_header *entry);
75 int apei_exec_write_register(struct apei_exec_context *ctx,
76 struct acpi_whea_header *entry);
77 int apei_exec_write_register_value(struct apei_exec_context *ctx,
78 struct acpi_whea_header *entry);
79 int apei_exec_noop(struct apei_exec_context *ctx,
80 struct acpi_whea_header *entry);
81 int apei_exec_pre_map_gars(struct apei_exec_context *ctx);
82 int apei_exec_post_unmap_gars(struct apei_exec_context *ctx);
83
84 #endif
85