1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * apei.h - ACPI Platform Error Interface
4 */
5
6 #ifndef ACPI_APEI_H
7 #define ACPI_APEI_H
8
9 #include <linux/acpi.h>
10 #include <linux/cper.h>
11 #include <asm/ioctls.h>
12
13 #define APEI_ERST_INVALID_RECORD_ID 0xffffffffffffffffULL
14
15 #define APEI_ERST_CLEAR_RECORD _IOW('E', 1, u64)
16 #define APEI_ERST_GET_RECORD_COUNT _IOR('E', 2, u32)
17
18 #ifdef __KERNEL__
19
20 enum hest_status {
21 HEST_ENABLED,
22 HEST_DISABLED,
23 HEST_NOT_FOUND,
24 };
25
26 extern int hest_disable;
27 extern int erst_disable;
28 #ifdef CONFIG_ACPI_APEI_GHES
29 extern bool ghes_disable;
30 #else
31 #define ghes_disable 1
32 #endif
33
34 #ifdef CONFIG_ACPI_APEI
35 void __init acpi_hest_init(void);
36 #else
acpi_hest_init(void)37 static inline void acpi_hest_init(void) { return; }
38 #endif
39
40 typedef int (*apei_hest_func_t)(struct acpi_hest_header *hest_hdr, void *data);
41 int apei_hest_parse(apei_hest_func_t func, void *data);
42
43 int erst_write(const struct cper_record_header *record);
44 ssize_t erst_get_record_count(void);
45 int erst_get_record_id_begin(int *pos);
46 int erst_get_record_id_next(int *pos, u64 *record_id);
47 void erst_get_record_id_end(void);
48 ssize_t erst_read(u64 record_id, struct cper_record_header *record,
49 size_t buflen);
50 int erst_clear(u64 record_id);
51
52 int arch_apei_enable_cmcff(struct acpi_hest_header *hest_hdr, void *data);
53 void arch_apei_report_mem_error(int sev, struct cper_sec_mem_err *mem_err);
54
55 #endif
56 #endif
57