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 */
20 static unsigned long (*amd_atl_umc_na_to_spa)(struct atl_err *err);
21
amd_atl_register_decoder(unsigned long (* f)(struct atl_err *))22 void amd_atl_register_decoder(unsigned long (*f)(struct atl_err *))
23 {
24 amd_atl_umc_na_to_spa = f;
25 }
26 EXPORT_SYMBOL_GPL(amd_atl_register_decoder);
27
amd_atl_unregister_decoder(void)28 void amd_atl_unregister_decoder(void)
29 {
30 amd_atl_umc_na_to_spa = NULL;
31 }
32 EXPORT_SYMBOL_GPL(amd_atl_unregister_decoder);
33
amd_convert_umc_mca_addr_to_sys_addr(struct atl_err * err)34 unsigned 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 }
41 EXPORT_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
log_non_standard_event(const guid_t * sec_type,const guid_t * fru_id,const char * fru_text,const u8 sev,const u8 * err,const u32 len)48 void 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 }
54 EXPORT_SYMBOL_GPL(log_non_standard_event);
55
log_arm_hw_error(struct cper_sec_proc_arm * err,const u8 sev)56 void 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);
76
77 if (sz + (long)ctx_info - (long)err >= err->section_length)
78 sz += ctx_info->size;
79
80 ctx_info = (struct cper_arm_ctx_info *)((long)ctx_info + sz);
81 ctx_len += sz;
82 }
83
84 vsei_len = err->section_length - (sizeof(struct cper_sec_proc_arm) + pei_len + ctx_len);
85 if (vsei_len < 0) {
86 pr_warn(FW_BUG "section length: %d\n", err->section_length);
87 pr_warn(FW_BUG "section length is too small\n");
88 pr_warn(FW_BUG "firmware-generated error record is incorrect\n");
89 vsei_len = 0;
90 }
91 ven_err_data = (u8 *)ctx_info;
92
93 cpu = GET_LOGICAL_INDEX(err->mpidr);
94 if (cpu < 0)
95 cpu = -1;
96
97 trace_arm_event(err, pei_err, pei_len, ctx_err, ctx_len,
98 ven_err_data, (u32)vsei_len, sev, cpu);
99 }
100
ras_init(void)101 static int __init ras_init(void)
102 {
103 int rc = 0;
104
105 ras_debugfs_init();
106 rc = ras_add_daemon_trace();
107
108 return rc;
109 }
110 subsys_initcall(ras_init);
111
112 #if defined(CONFIG_ACPI_EXTLOG) || defined(CONFIG_ACPI_EXTLOG_MODULE)
113 EXPORT_TRACEPOINT_SYMBOL_GPL(extlog_mem_event);
114 #endif
115 EXPORT_TRACEPOINT_SYMBOL_GPL(mc_event);
116 EXPORT_TRACEPOINT_SYMBOL_GPL(non_standard_event);
117 EXPORT_TRACEPOINT_SYMBOL_GPL(arm_event);
118
parse_ras_param(char * str)119 static int __init parse_ras_param(char *str)
120 {
121 #ifdef CONFIG_RAS_CEC
122 parse_cec_param(str);
123 #endif
124
125 return 1;
126 }
127 __setup("ras", parse_ras_param);
128