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
11static 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
33void 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