1 /**
2  * Describes functions for converting IOMMU specific 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 "b64.h"
10 #include "../edk/Cper.h"
11 #include "../cper-utils.h"
12 #include "cper-section-dmar-iommu.h"
13 
14 //Converts a single IOMMU specific DMAr CPER section into JSON IR.
15 json_object* cper_section_dmar_iommu_to_ir(void* section, EFI_ERROR_SECTION_DESCRIPTOR* descriptor)
16 {
17     EFI_IOMMU_DMAR_ERROR_DATA* iommu_error = (EFI_IOMMU_DMAR_ERROR_DATA*)section;
18     json_object* section_ir = json_object_new_object();
19 
20     //Revision.
21     json_object_object_add(section_ir, "revision", json_object_new_int(iommu_error->Revision));
22 
23     //IOMMU registers.
24     json_object_object_add(section_ir, "controlRegister", json_object_new_uint64(iommu_error->Control));
25     json_object_object_add(section_ir, "statusRegister", json_object_new_uint64(iommu_error->Status));
26 
27     //IOMMU event log entry.
28     //The format of these entries differ widely by the type of error.
29     char* encoded = b64_encode((unsigned char*)iommu_error->EventLogEntry, 16);
30     json_object_object_add(section_ir, "eventLogEntry", json_object_new_string(encoded));
31     free(encoded);
32 
33     //Device table entry (as base64).
34     encoded = b64_encode((unsigned char*)iommu_error->DeviceTableEntry, 32);
35     json_object_object_add(section_ir, "deviceTableEntry", json_object_new_string(encoded));
36     free(encoded);
37 
38     //Page table entries.
39     json_object_object_add(section_ir, "pageTableEntry_Level6", json_object_new_uint64(iommu_error->PteL6));
40     json_object_object_add(section_ir, "pageTableEntry_Level5", json_object_new_uint64(iommu_error->PteL5));
41     json_object_object_add(section_ir, "pageTableEntry_Level4", json_object_new_uint64(iommu_error->PteL4));
42     json_object_object_add(section_ir, "pageTableEntry_Level3", json_object_new_uint64(iommu_error->PteL3));
43     json_object_object_add(section_ir, "pageTableEntry_Level2", json_object_new_uint64(iommu_error->PteL2));
44     json_object_object_add(section_ir, "pageTableEntry_Level1", json_object_new_uint64(iommu_error->PteL1));
45 
46     return section_ir;
47 }