1 /**
2 * Describes functions for converting PCI/PCI-X bus 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 <string.h>
9 #include <json.h>
10 #include <libcper/Cper.h>
11 #include <libcper/cper-utils.h>
12 #include <libcper/sections/cper-section-pci-bus.h>
13
14 //Converts a single PCI/PCI-X bus CPER section into JSON IR.
cper_section_pci_bus_to_ir(void * section)15 json_object *cper_section_pci_bus_to_ir(void *section)
16 {
17 EFI_PCI_PCIX_BUS_ERROR_DATA *bus_error =
18 (EFI_PCI_PCIX_BUS_ERROR_DATA *)section;
19 json_object *section_ir = json_object_new_object();
20
21 //Validation bits.
22 json_object *validation = bitfield_to_ir(
23 bus_error->ValidFields, 9, PCI_BUS_ERROR_VALID_BITFIELD_NAMES);
24 json_object_object_add(section_ir, "validationBits", validation);
25
26 //Error status.
27 json_object *error_status =
28 cper_generic_error_status_to_ir(&bus_error->ErrorStatus);
29 json_object_object_add(section_ir, "errorStatus", error_status);
30
31 //PCI bus error type.
32 json_object *error_type = integer_to_readable_pair(
33 bus_error->Type, 8, PCI_BUS_ERROR_TYPES_KEYS,
34 PCI_BUS_ERROR_TYPES_VALUES, "Unknown (Reserved)");
35 json_object_object_add(section_ir, "errorType", error_type);
36
37 //Bus ID.
38 json_object *bus_id = json_object_new_object();
39 json_object_object_add(bus_id, "busNumber",
40 json_object_new_int(bus_error->BusId & 0xFF));
41 json_object_object_add(bus_id, "segmentNumber",
42 json_object_new_int(bus_error->BusId >> 8));
43 json_object_object_add(section_ir, "busID", bus_id);
44
45 //Miscellaneous numeric fields.
46 UINT8 command_type = (bus_error->BusCommand >> 56) &
47 0x1; //Byte 7, bit 0.
48 json_object_object_add(section_ir, "busAddress",
49 json_object_new_uint64(bus_error->BusAddress));
50 json_object_object_add(section_ir, "busData",
51 json_object_new_uint64(bus_error->BusData));
52 json_object_object_add(
53 section_ir, "busCommandType",
54 json_object_new_string(command_type == 0 ? "PCI" : "PCI-X"));
55
56 json_object_object_add(section_ir, "busRequestorID",
57 json_object_new_uint64(bus_error->RequestorId));
58
59 char hexstring_buf[EFI_UINT64_HEX_STRING_LEN];
60 snprintf(hexstring_buf, EFI_UINT64_HEX_STRING_LEN, "0x%016llX",
61 bus_error->RequestorId);
62 json_object_object_add(section_ir, "busRequestorIDHex",
63 json_object_new_string(hexstring_buf));
64
65 json_object_object_add(section_ir, "busCompleterID",
66 json_object_new_uint64(bus_error->ResponderId));
67 snprintf(hexstring_buf, EFI_UINT64_HEX_STRING_LEN, "0x%016llX",
68 bus_error->ResponderId);
69 json_object_object_add(section_ir, "busCompleterIDHex",
70 json_object_new_string(hexstring_buf));
71
72 json_object_object_add(section_ir, "targetID",
73 json_object_new_uint64(bus_error->TargetId));
74
75 return section_ir;
76 }
77
78 //Converts a single provided PCI/PCI-X bus CPER-JSON section into CPER binary, outputting to the
79 //provided stream.
ir_section_pci_bus_to_cper(json_object * section,FILE * out)80 void ir_section_pci_bus_to_cper(json_object *section, FILE *out)
81 {
82 EFI_PCI_PCIX_BUS_ERROR_DATA *section_cper =
83 (EFI_PCI_PCIX_BUS_ERROR_DATA *)calloc(
84 1, sizeof(EFI_PCI_PCIX_BUS_ERROR_DATA));
85
86 //Validation bits.
87 section_cper->ValidFields = ir_to_bitfield(
88 json_object_object_get(section, "validationBits"), 9,
89 PCI_BUS_ERROR_VALID_BITFIELD_NAMES);
90
91 //Error status.
92 ir_generic_error_status_to_cper(json_object_object_get(section,
93 "errorStatus"),
94 §ion_cper->ErrorStatus);
95
96 //Bus ID.
97 json_object *bus_id = json_object_object_get(section, "busID");
98 UINT16 bus_number = (UINT8)json_object_get_int(
99 json_object_object_get(bus_id, "busNumber"));
100 UINT16 segment_number = (UINT8)json_object_get_int(
101 json_object_object_get(bus_id, "segmentNumber"));
102 section_cper->BusId = bus_number + (segment_number << 8);
103
104 //Remaining fields.
105 UINT64 pcix_command = (UINT64)0x1 << 56;
106 const char *bus_command = json_object_get_string(
107 json_object_object_get(section, "busCommandType"));
108 section_cper->Type = (UINT16)readable_pair_to_integer(
109 json_object_object_get(section, "errorType"));
110 section_cper->BusAddress = json_object_get_uint64(
111 json_object_object_get(section, "busAddress"));
112 section_cper->BusData = json_object_get_uint64(
113 json_object_object_get(section, "busData"));
114 section_cper->BusCommand =
115 strcmp(bus_command, "PCI") == 0 ? 0 : pcix_command;
116 section_cper->RequestorId = json_object_get_uint64(
117 json_object_object_get(section, "busRequestorID"));
118 section_cper->ResponderId = json_object_get_uint64(
119 json_object_object_get(section, "busCompleterID"));
120 section_cper->TargetId = json_object_get_uint64(
121 json_object_object_get(section, "targetID"));
122
123 //Write to stream, free resources.
124 fwrite(section_cper, sizeof(EFI_PCI_PCIX_BUS_ERROR_DATA), 1, out);
125 fflush(out);
126 free(section_cper);
127 }
128