1 /**
2 * Describes functions for converting NVIDIA CPER sections from binary and JSON format
3 * into an intermediate format.
4 **/
5
6 #include <stdio.h>
7 #include <stddef.h>
8 #include <string.h>
9 #include <json.h>
10 #include "Cper.h"
11 #include "../cper-utils.h"
12 #include "cper-section-nvidia.h"
13
14 //Converts a single NVIDIA CPER section into JSON IR.
cper_section_nvidia_to_ir(void * section)15 json_object *cper_section_nvidia_to_ir(void *section)
16 {
17 EFI_NVIDIA_ERROR_DATA *nvidia_error = (EFI_NVIDIA_ERROR_DATA *)section;
18 json_object *section_ir = json_object_new_object();
19
20 json_object_object_add(section_ir, "signature",
21 json_object_new_string(nvidia_error->Signature));
22
23 json_object *severity = json_object_new_object();
24 json_object_object_add(severity, "code",
25 json_object_new_uint64(nvidia_error->Severity));
26 json_object_object_add(severity, "name",
27 json_object_new_string(severity_to_string(
28 nvidia_error->Severity)));
29 json_object_object_add(section_ir, "severity", severity);
30
31 json_object_object_add(section_ir, "errorType",
32 json_object_new_int(nvidia_error->ErrorType));
33 json_object_object_add(
34 section_ir, "errorInstance",
35 json_object_new_int(nvidia_error->ErrorInstance));
36 json_object_object_add(section_ir, "socket",
37 json_object_new_int(nvidia_error->Socket));
38 json_object_object_add(section_ir, "registerCount",
39 json_object_new_int(nvidia_error->NumberRegs));
40 json_object_object_add(
41 section_ir, "instanceBase",
42 json_object_new_uint64(nvidia_error->InstanceBase));
43
44 // Registers (Address Value pairs).
45 json_object *regarr = json_object_new_array();
46 EFI_NVIDIA_REGISTER_DATA *regPtr = nvidia_error->Register;
47 for (int i = 0; i < nvidia_error->NumberRegs; i++, regPtr++) {
48 json_object *reg = json_object_new_object();
49 json_object_object_add(reg, "address",
50 json_object_new_uint64(regPtr->Address));
51 json_object_object_add(reg, "value",
52 json_object_new_uint64(regPtr->Value));
53 json_object_array_add(regarr, reg);
54 }
55 json_object_object_add(section_ir, "registers", regarr);
56
57 return section_ir;
58 }
59
60 //Converts a single NVIDIA CPER-JSON section into CPER binary, outputting to the given stream.
ir_section_nvidia_to_cper(json_object * section,FILE * out)61 void ir_section_nvidia_to_cper(json_object *section, FILE *out)
62 {
63 json_object *regarr = json_object_object_get(section, "registers");
64 int numRegs = json_object_array_length(regarr);
65
66 size_t section_sz = offsetof(EFI_NVIDIA_ERROR_DATA, Register) +
67 numRegs * sizeof(EFI_NVIDIA_REGISTER_DATA);
68 EFI_NVIDIA_ERROR_DATA *section_cper =
69 (EFI_NVIDIA_ERROR_DATA *)calloc(1, section_sz);
70
71 //Signature.
72 strncpy(section_cper->Signature,
73 json_object_get_string(
74 json_object_object_get(section, "signature")),
75 sizeof(section_cper->Signature) - 1);
76 section_cper->Signature[sizeof(section_cper->Signature) - 1] = '\0';
77
78 //Fields.
79 section_cper->ErrorType = json_object_get_int(
80 json_object_object_get(section, "errorType"));
81 section_cper->ErrorInstance = json_object_get_int(
82 json_object_object_get(section, "errorInstance"));
83 json_object *severity = json_object_object_get(section, "severity");
84 section_cper->Severity = (UINT8)json_object_get_uint64(
85 json_object_object_get(severity, "code"));
86 section_cper->Socket =
87 json_object_get_int(json_object_object_get(section, "socket"));
88 section_cper->NumberRegs = json_object_get_int(
89 json_object_object_get(section, "registerCount"));
90 section_cper->InstanceBase = json_object_get_uint64(
91 json_object_object_get(section, "instanceBase"));
92
93 // Registers (Address Value pairs).
94 EFI_NVIDIA_REGISTER_DATA *regPtr = section_cper->Register;
95 for (int i = 0; i < numRegs; i++, regPtr++) {
96 json_object *reg = json_object_array_get_idx(regarr, i);
97 regPtr->Address = json_object_get_uint64(
98 json_object_object_get(reg, "address"));
99 regPtr->Value = json_object_get_uint64(
100 json_object_object_get(reg, "value"));
101 }
102
103 //Write to stream, free resources.
104 fwrite(section_cper, section_sz, 1, out);
105 fflush(out);
106 free(section_cper);
107 }
108