Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2014 Intel Corporation
4 *
5 * Authors:
6 * Chen, Gong <gong.chen@linux.intel.com>
7 */
8
9#include <linux/init.h>
10#include <linux/ras.h>
11#include <linux/uuid.h>
12
13#if IS_ENABLED(CONFIG_AMD_ATL)
14/*
15 * Once set, this function pointer should never be unset.
16 *
17 * The library module will set this pointer if it successfully loads. The module
18 * should not be unloaded except for testing and debug purposes.
19 */
20static unsigned long (*amd_atl_umc_na_to_spa)(struct atl_err *err);
21
22void amd_atl_register_decoder(unsigned long (*f)(struct atl_err *))
23{
24 amd_atl_umc_na_to_spa = f;
25}
26EXPORT_SYMBOL_GPL(amd_atl_register_decoder);
27
28void amd_atl_unregister_decoder(void)
29{
30 amd_atl_umc_na_to_spa = NULL;
31}
32EXPORT_SYMBOL_GPL(amd_atl_unregister_decoder);
33
34unsigned long amd_convert_umc_mca_addr_to_sys_addr(struct atl_err *err)
35{
36 if (!amd_atl_umc_na_to_spa)
37 return -EINVAL;
38
39 return amd_atl_umc_na_to_spa(err);
40}
41EXPORT_SYMBOL_GPL(amd_convert_umc_mca_addr_to_sys_addr);
42#endif /* CONFIG_AMD_ATL */
43
44#define CREATE_TRACE_POINTS
45#define TRACE_INCLUDE_PATH ../../include/ras
46#include <ras/ras_event.h>
47
48void log_non_standard_event(const guid_t *sec_type, const guid_t *fru_id,
49 const char *fru_text, const u8 sev, const u8 *err,
50 const u32 len)
51{
52 trace_non_standard_event(sec_type, fru_id, fru_text, sev, err, len);
53}
54EXPORT_SYMBOL_GPL(log_non_standard_event);
55
56void log_arm_hw_error(struct cper_sec_proc_arm *err, const u8 sev)
57{
58 struct cper_arm_err_info *err_info;
59 struct cper_arm_ctx_info *ctx_info;
60 u8 *ven_err_data;
61 u32 ctx_len = 0;
62 int n, sz, cpu;
63 s32 vsei_len;
64 u32 pei_len;
65 u8 *pei_err, *ctx_err;
66
67 pei_len = sizeof(struct cper_arm_err_info) * err->err_info_num;
68 pei_err = (u8 *)(err + 1);
69
70 err_info = (struct cper_arm_err_info *)(err + 1);
71 ctx_info = (struct cper_arm_ctx_info *)(err_info + err->err_info_num);
72 ctx_err = (u8 *)ctx_info;
73
74 for (n = 0; n < err->context_info_num; n++) {
75 sz = sizeof(struct cper_arm_ctx_info) + ctx_info->size;
76 ctx_info = (struct cper_arm_ctx_info *)((long)ctx_info + sz);
77 ctx_len += sz;
78 }
79
80 vsei_len = err->section_length - (sizeof(struct cper_sec_proc_arm) + pei_len + ctx_len);
81 if (vsei_len < 0) {
82 pr_warn(FW_BUG "section length: %d\n", err->section_length);
83 pr_warn(FW_BUG "section length is too small\n");
84 pr_warn(FW_BUG "firmware-generated error record is incorrect\n");
85 vsei_len = 0;
86 }
87 ven_err_data = (u8 *)ctx_info;
88
89 cpu = GET_LOGICAL_INDEX(err->mpidr);
90 if (cpu < 0)
91 cpu = -1;
92
93 trace_arm_event(err, pei_err, pei_len, ctx_err, ctx_len,
94 ven_err_data, (u32)vsei_len, sev, cpu);
95}
96
97static int __init ras_init(void)
98{
99 int rc = 0;
100
101 ras_debugfs_init();
102 rc = ras_add_daemon_trace();
103
104 return rc;
105}
106subsys_initcall(ras_init);
107
108#if defined(CONFIG_ACPI_EXTLOG) || defined(CONFIG_ACPI_EXTLOG_MODULE)
109EXPORT_TRACEPOINT_SYMBOL_GPL(extlog_mem_event);
110#endif
111EXPORT_TRACEPOINT_SYMBOL_GPL(mc_event);
112EXPORT_TRACEPOINT_SYMBOL_GPL(non_standard_event);
113EXPORT_TRACEPOINT_SYMBOL_GPL(arm_event);
114
115static int __init parse_ras_param(char *str)
116{
117#ifdef CONFIG_RAS_CEC
118 parse_cec_param(str);
119#endif
120
121 return 1;
122}
123__setup("ras", parse_ras_param);