1 /**
2 * Functions for generating pseudo-random CPER PCIe error sections.
3 *
4 * Author: Lawrence.Tang@arm.com
5 **/
6
7 #include <stdlib.h>
8 #include <libcper/BaseTypes.h>
9 #include <libcper/generator/gen-utils.h>
10 #include <libcper/generator/sections/gen-section.h>
11
12 #define PCIE_PORT_TYPES (int[]){ 0, 1, 4, 5, 6, 7, 8, 9, 10 }
13
14 //Generates a single pseudo-random PCIe error section, saving the resulting address to the given
15 //location. Returns the size of the newly created section.
generate_section_pcie(void ** location,GEN_VALID_BITS_TEST_TYPE validBitsType)16 size_t generate_section_pcie(void **location,
17 GEN_VALID_BITS_TEST_TYPE validBitsType)
18 {
19 //Create random bytes.
20 int size = 208;
21 UINT8 *bytes = generate_random_bytes(size);
22
23 //Set reserved areas to zero.
24 UINT64 *validation = (UINT64 *)bytes;
25 *validation &= 0xFF; //Validation 8-63
26 if (validBitsType == ALL_VALID) {
27 *validation = 0xFF;
28 } else if (validBitsType == SOME_VALID) {
29 *validation = 0x55;
30 }
31 UINT32 *version = (UINT32 *)(bytes + 12);
32 *version &= 0xFFFF; //Version bytes 2-3
33 UINT32 *reserved = (UINT32 *)(bytes + 20);
34 *reserved = 0; //Reserved bytes 20-24
35 *(bytes + 37) &= ~0x7; //Device ID byte 13 bits 0-3
36 *(bytes + 39) = 0; //Device ID byte 15
37
38 //Set expected values.
39 int minor = rand() % 128;
40 int major = rand() % 128;
41 *version = int_to_bcd(minor);
42 *version |= int_to_bcd(major) << 8;
43
44 //Fix values that could be above range.
45 UINT32 *port_type = (UINT32 *)(bytes + 8);
46 *port_type = PCIE_PORT_TYPES[rand() %
47 (sizeof(PCIE_PORT_TYPES) / sizeof(int))];
48
49 //Set return values, exit.
50 *location = bytes;
51 return size;
52 }
53