1 /**
2 * Describes functions for converting PCI/PCI-X device 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 <libcper/Cper.h>
10 #include <libcper/cper-utils.h>
11 #include <libcper/sections/cper-section-pci-dev.h>
12 #include <libcper/log.h>
13 #include <string.h>
14
15 //Converts a single PCI/PCI-X device CPER section into JSON IR.
cper_section_pci_dev_to_ir(const UINT8 * section,UINT32 size,char ** desc_string)16 json_object *cper_section_pci_dev_to_ir(const UINT8 *section, UINT32 size,
17 char **desc_string)
18 {
19 int outstr_len = 0;
20 *desc_string = malloc(SECTION_DESC_STRING_SIZE);
21 outstr_len = snprintf(*desc_string, SECTION_DESC_STRING_SIZE,
22 "A PCI/PCI-X Device Error occurred");
23 if (outstr_len < 0) {
24 cper_print_log(
25 "Error: Could not write to PCI/PCI-X Device description string\n");
26 } else if (outstr_len > SECTION_DESC_STRING_SIZE) {
27 cper_print_log(
28 "Error: PCI/PCI-X Device description string truncated\n");
29 }
30
31 if (size < sizeof(EFI_PCI_PCIX_DEVICE_ERROR_DATA)) {
32 return NULL;
33 }
34
35 EFI_PCI_PCIX_DEVICE_ERROR_DATA *dev_error =
36 (EFI_PCI_PCIX_DEVICE_ERROR_DATA *)section;
37
38 if (size < sizeof(EFI_PCI_PCIX_DEVICE_ERROR_DATA) +
39 ((dev_error->MemoryNumber + dev_error->IoNumber) *
40 sizeof(EFI_PCI_PCIX_DEVICE_ERROR_DATA_REGISTER))) {
41 return NULL;
42 }
43
44 json_object *section_ir = json_object_new_object();
45
46 //Validation bits.
47 ValidationTypes ui64Type = { UINT_64T,
48 .value.ui64 = dev_error->ValidFields };
49
50 //Error status.
51 if (isvalid_prop_to_ir(&ui64Type, 0)) {
52 json_object *error_status = cper_generic_error_status_to_ir(
53 &dev_error->ErrorStatus);
54 json_object_object_add(section_ir, "errorStatus", error_status);
55 }
56
57 //ID information.
58 if (isvalid_prop_to_ir(&ui64Type, 1)) {
59 json_object *id_info = json_object_new_object();
60 json_object_object_add(
61 id_info, "vendorID",
62 json_object_new_uint64(dev_error->IdInfo.VendorId));
63 json_object_object_add(
64 id_info, "deviceID",
65 json_object_new_uint64(dev_error->IdInfo.DeviceId));
66 json_object_object_add(
67 id_info, "classCode",
68 json_object_new_uint64(dev_error->IdInfo.ClassCode));
69 json_object_object_add(
70 id_info, "functionNumber",
71 json_object_new_uint64(
72 dev_error->IdInfo.FunctionNumber));
73 json_object_object_add(
74 id_info, "deviceNumber",
75 json_object_new_uint64(dev_error->IdInfo.DeviceNumber));
76 json_object_object_add(
77 id_info, "busNumber",
78 json_object_new_uint64(dev_error->IdInfo.BusNumber));
79 json_object_object_add(
80 id_info, "segmentNumber",
81 json_object_new_uint64(
82 dev_error->IdInfo.SegmentNumber));
83 json_object_object_add(section_ir, "idInfo", id_info);
84 }
85
86 //Number of following register data pairs.
87 if (isvalid_prop_to_ir(&ui64Type, 2)) {
88 json_object_object_add(
89 section_ir, "memoryNumber",
90 json_object_new_uint64(dev_error->MemoryNumber));
91 }
92 if (isvalid_prop_to_ir(&ui64Type, 3)) {
93 json_object_object_add(
94 section_ir, "ioNumber",
95 json_object_new_uint64(dev_error->IoNumber));
96 }
97
98 if (isvalid_prop_to_ir(&ui64Type, 4)) {
99 int num_data_pairs =
100 dev_error->MemoryNumber + dev_error->IoNumber;
101
102 //Register pairs, described by the numeric fields.
103 //The actual "pairs" of address and data aren't necessarily 8 bytes long, so can't assume the contents.
104 //Hence the naming "firstHalf" and "secondHalf" rather than "address" and "data".
105 json_object *register_data_pair_array = json_object_new_array();
106 UINT64 *cur_pos = (UINT64 *)(dev_error + 1);
107 for (int i = 0; i < num_data_pairs; i++) {
108 //Save current pair to array.
109 json_object *register_data_pair =
110 json_object_new_object();
111 json_object_object_add(
112 register_data_pair, "firstHalf",
113 json_object_new_uint64(*cur_pos));
114 json_object_object_add(
115 register_data_pair, "secondHalf",
116 json_object_new_uint64(*(cur_pos + 1)));
117 json_object_array_add(register_data_pair_array,
118 register_data_pair);
119
120 //Move to next pair.
121 cur_pos += 2;
122 }
123 json_object_object_add(section_ir, "registerDataPairs",
124 register_data_pair_array);
125 }
126
127 return section_ir;
128 }
129
ir_section_pci_dev_to_cper(json_object * section,FILE * out)130 void ir_section_pci_dev_to_cper(json_object *section, FILE *out)
131 {
132 EFI_PCI_PCIX_DEVICE_ERROR_DATA *section_cper =
133 (EFI_PCI_PCIX_DEVICE_ERROR_DATA *)calloc(
134 1, sizeof(EFI_PCI_PCIX_DEVICE_ERROR_DATA));
135
136 //Validation bits.
137 ValidationTypes ui64Type = { UINT_64T, .value.ui64 = 0 };
138 struct json_object *obj = NULL;
139
140 //Error status.
141 if (json_object_object_get_ex(section, "errorStatus", &obj)) {
142 ir_generic_error_status_to_cper(obj,
143 §ion_cper->ErrorStatus);
144 add_to_valid_bitfield(&ui64Type, 0);
145 }
146
147 //Device ID information.
148 if (json_object_object_get_ex(section, "idInfo", &obj)) {
149 json_object *id_info = obj;
150 section_cper->IdInfo.VendorId = json_object_get_uint64(
151 json_object_object_get(id_info, "vendorID"));
152 section_cper->IdInfo.DeviceId = json_object_get_uint64(
153 json_object_object_get(id_info, "deviceID"));
154 section_cper->IdInfo.ClassCode = json_object_get_uint64(
155 json_object_object_get(id_info, "classCode"));
156 section_cper->IdInfo.FunctionNumber = json_object_get_uint64(
157 json_object_object_get(id_info, "functionNumber"));
158 section_cper->IdInfo.DeviceNumber = json_object_get_uint64(
159 json_object_object_get(id_info, "deviceNumber"));
160 section_cper->IdInfo.BusNumber = json_object_get_uint64(
161 json_object_object_get(id_info, "busNumber"));
162 section_cper->IdInfo.SegmentNumber = json_object_get_uint64(
163 json_object_object_get(id_info, "segmentNumber"));
164 add_to_valid_bitfield(&ui64Type, 1);
165 }
166
167 //Amount of following data pairs.
168 if (json_object_object_get_ex(section, "memoryNumber", &obj)) {
169 section_cper->MemoryNumber =
170 (UINT32)json_object_get_uint64(obj);
171 add_to_valid_bitfield(&ui64Type, 2);
172 }
173 if (json_object_object_get_ex(section, "ioNumber", &obj)) {
174 section_cper->IoNumber = (UINT32)json_object_get_uint64(obj);
175 add_to_valid_bitfield(&ui64Type, 3);
176 }
177 json_object *register_pairs = NULL;
178 if (json_object_object_get_ex(section, "registerDataPairs", &obj)) {
179 register_pairs = obj;
180 add_to_valid_bitfield(&ui64Type, 4);
181 }
182
183 section_cper->ValidFields = ui64Type.value.ui64;
184
185 //Write header out to stream, free it.
186 fwrite(section_cper, sizeof(EFI_PCI_PCIX_DEVICE_ERROR_DATA), 1, out);
187 fflush(out);
188 free(section_cper);
189
190 //Begin writing register pairs.
191 if (register_pairs != NULL) {
192 int num_pairs = json_object_array_length(register_pairs);
193 for (int i = 0; i < num_pairs; i++) {
194 //Get the pair array item out.
195 json_object *register_pair =
196 json_object_array_get_idx(register_pairs, i);
197
198 //Create the pair array.
199 UINT64 pair[2];
200 pair[0] = json_object_get_uint64(json_object_object_get(
201 register_pair, "firstHalf"));
202 pair[1] = json_object_get_uint64(json_object_object_get(
203 register_pair, "secondHalf"));
204
205 //Push to stream.
206 fwrite(pair, sizeof(UINT64), 2, out);
207 fflush(out);
208 }
209 }
210 }
211