1 /**
2 * Describes functions for converting generic DMAr CPER sections from binary and JSON format
3 * into an intermediate format.
4 *
5 * Author: Lawrence.Tang@arm.com
6 **/
7 #include <stdio.h>
8 #include <json.h>
9 #include "../edk/Cper.h"
10 #include "../cper-utils.h"
11 #include "cper-section-dmar-generic.h"
12
13 //Converts a single generic DMAr CPER section into JSON IR.
cper_section_dmar_generic_to_ir(void * section)14 json_object *cper_section_dmar_generic_to_ir(void *section)
15 {
16 EFI_DMAR_GENERIC_ERROR_DATA *firmware_error =
17 (EFI_DMAR_GENERIC_ERROR_DATA *)section;
18 json_object *section_ir = json_object_new_object();
19
20 //Requester ID, segment.
21 json_object_object_add(
22 section_ir, "requesterID",
23 json_object_new_int(firmware_error->RequesterId));
24 json_object_object_add(
25 section_ir, "segmentNumber",
26 json_object_new_int(firmware_error->SegmentNumber));
27
28 //Fault reason.
29 json_object *fault_reason = integer_to_readable_pair_with_desc(
30 firmware_error->FaultReason, 11,
31 DMAR_GENERIC_ERROR_FAULT_REASON_TYPES_KEYS,
32 DMAR_GENERIC_ERROR_FAULT_REASON_TYPES_VALUES,
33 DMAR_GENERIC_ERROR_FAULT_REASON_TYPES_DESCRIPTIONS,
34 "Unknown (Reserved)");
35 json_object_object_add(section_ir, "faultReason", fault_reason);
36
37 //Access type.
38 json_object *access_type = integer_to_readable_pair(
39 firmware_error->AccessType, 2,
40 DMAR_GENERIC_ERROR_ACCESS_TYPES_KEYS,
41 DMAR_GENERIC_ERROR_ACCESS_TYPES_VALUES, "Unknown (Reserved)");
42 json_object_object_add(section_ir, "accessType", access_type);
43
44 //Address type.
45 json_object *address_type = integer_to_readable_pair(
46 firmware_error->AddressType, 2,
47 DMAR_GENERIC_ERROR_ADDRESS_TYPES_KEYS,
48 DMAR_GENERIC_ERROR_ADDRESS_TYPES_VALUES, "Unknown (Reserved)");
49 json_object_object_add(section_ir, "addressType", address_type);
50
51 //Architecture type.
52 json_object *arch_type = integer_to_readable_pair(
53 firmware_error->ArchType, 2, DMAR_GENERIC_ERROR_ARCH_TYPES_KEYS,
54 DMAR_GENERIC_ERROR_ARCH_TYPES_VALUES, "Unknown (Reserved)");
55 json_object_object_add(section_ir, "architectureType", arch_type);
56
57 //Device address.
58 json_object_object_add(
59 section_ir, "deviceAddress",
60 json_object_new_uint64(firmware_error->DeviceAddr));
61
62 return section_ir;
63 }
64
65 //Converts a single generic DMAR CPER-JSON section into CPER binary, outputting to the given stream.
ir_section_dmar_generic_to_cper(json_object * section,FILE * out)66 void ir_section_dmar_generic_to_cper(json_object *section, FILE *out)
67 {
68 EFI_DMAR_GENERIC_ERROR_DATA *section_cper =
69 (EFI_DMAR_GENERIC_ERROR_DATA *)calloc(
70 1, sizeof(EFI_DMAR_GENERIC_ERROR_DATA));
71
72 //Record fields.
73 section_cper->RequesterId = (UINT16)json_object_get_int(
74 json_object_object_get(section, "requesterID"));
75 section_cper->SegmentNumber = (UINT16)json_object_get_int(
76 json_object_object_get(section, "segmentNumber"));
77 section_cper->FaultReason = (UINT8)readable_pair_to_integer(
78 json_object_object_get(section, "faultReason"));
79 section_cper->AccessType = (UINT8)readable_pair_to_integer(
80 json_object_object_get(section, "accessType"));
81 section_cper->AddressType = (UINT8)readable_pair_to_integer(
82 json_object_object_get(section, "addressType"));
83 section_cper->ArchType = (UINT8)readable_pair_to_integer(
84 json_object_object_get(section, "architectureType"));
85 section_cper->DeviceAddr = json_object_get_uint64(
86 json_object_object_get(section, "deviceAddress"));
87
88 //Write to stream, free resources.
89 fwrite(section_cper, sizeof(EFI_DMAR_GENERIC_ERROR_DATA), 1, out);
90 fflush(out);
91 free(section_cper);
92 }
93