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/*
* Dump PCI device headers
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/pci.h>
#include "sysdump.h"
#include "backend.h"
static void dump_pci_device(struct backend *be, pciaddr_t a, uint8_t hdrtype)
{
unsigned int bus = pci_bus(a);
unsigned int dev = pci_dev(a);
unsigned int func = pci_func(a);
uint8_t data[256];
unsigned int i;
char filename[32];
hdrtype &= 0x7f;
printf("Scanning PCI bus... %02x:%02x.%x\r", bus, dev, func);
/* Assume doing a full device dump is actually safe... */
for (i = 0; i < sizeof data; i += 4)
*(uint32_t *)(data+i) = pci_readl(a + i);
snprintf(filename, sizeof filename, "pci/%02x:%02x.%x",
bus, dev, func);
cpio_writefile(be, filename, data, sizeof data);
}
void dump_pci(struct backend *be)
{
int cfgtype;
unsigned int nbus, ndev, nfunc, maxfunc;
pciaddr_t a;
uint32_t did;
uint8_t hdrtype;
cfgtype = pci_set_config_type(PCI_CFG_AUTO);
if (cfgtype == PCI_CFG_NONE)
return;
cpio_mkdir(be, "pci");
for (nbus = 0; nbus < MAX_PCI_BUSES; nbus++) {
for (ndev = 0; ndev < MAX_PCI_DEVICES; ndev++) {
maxfunc = 1; /* Assume a single-function device */
for (nfunc = 0; nfunc < maxfunc; nfunc++) {
a = pci_mkaddr(nbus, ndev, nfunc, 0);
did = pci_readl(a);
if (did == 0xffffffff || did == 0xffff0000 ||
did == 0x0000ffff || did == 0x00000000)
continue;
hdrtype = pci_readb(a + 0x0e);
if (hdrtype & 0x80)
maxfunc = MAX_PCI_FUNC; /* Multifunction device */
dump_pci_device(be, a, hdrtype);
}
}
}
printf("Scanning PCI bus... done. \n");
}
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