1 /*
2 * Dump PCI device headers
3 */
4
5 #include <stdio.h>
6 #include <string.h>
7 #include <stdlib.h>
8 #include <sys/pci.h>
9 #include "sysdump.h"
10
dump_pci_device(struct upload_backend * be,pciaddr_t a,uint8_t hdrtype)11 static void dump_pci_device(struct upload_backend *be, pciaddr_t a, uint8_t hdrtype)
12 {
13 unsigned int bus = pci_bus(a);
14 unsigned int dev = pci_dev(a);
15 unsigned int func = pci_func(a);
16 uint8_t data[256];
17 unsigned int i;
18 char filename[32];
19
20 hdrtype &= 0x7f;
21
22 printf("Scanning PCI bus... %02x:%02x.%x\r", bus, dev, func);
23
24 /* Assume doing a full device dump is actually safe... */
25 for (i = 0; i < sizeof data; i += 4)
26 *(uint32_t *)(data+i) = pci_readl(a + i);
27
28 snprintf(filename, sizeof filename, "pci/%02x:%02x.%x",
29 bus, dev, func);
30 cpio_writefile(be, filename, data, sizeof data);
31 }
32
dump_pci(struct upload_backend * be)33 void dump_pci(struct upload_backend *be)
34 {
35 int cfgtype;
36 unsigned int nbus, ndev, nfunc, maxfunc;
37 pciaddr_t a;
38 uint32_t did;
39 uint8_t hdrtype;
40
41 cfgtype = pci_set_config_type(PCI_CFG_AUTO);
42 if (cfgtype == PCI_CFG_NONE)
43 return;
44
45 cpio_mkdir(be, "pci");
46
47 for (nbus = 0; nbus < MAX_PCI_BUSES; nbus++) {
48 for (ndev = 0; ndev < MAX_PCI_DEVICES; ndev++) {
49 maxfunc = 1; /* Assume a single-function device */
50
51 for (nfunc = 0; nfunc < maxfunc; nfunc++) {
52 a = pci_mkaddr(nbus, ndev, nfunc, 0);
53 did = pci_readl(a);
54
55 if (did == 0xffffffff || did == 0xffff0000 ||
56 did == 0x0000ffff || did == 0x00000000)
57 continue;
58
59 hdrtype = pci_readb(a + 0x0e);
60 if (hdrtype & 0x80)
61 maxfunc = MAX_PCI_FUNC; /* Multifunction device */
62
63 dump_pci_device(be, a, hdrtype);
64 }
65 }
66 }
67
68 printf("Scanning PCI bus... done. \n");
69 }
70