1 /*
2 * The PCI Library -- Example of use (simplistic lister of PCI devices)
3 *
4 * Written by Martin Mares and put to public domain. You can do
5 * with it anything you want, but I don't give you any warranty.
6 */
7
8 #include <stdio.h>
9
10 #include "lib/pci.h"
11
main(void)12 int main(void)
13 {
14 struct pci_access *pacc;
15 struct pci_dev *dev;
16 unsigned int c;
17 char namebuf[1024], *name;
18
19 pacc = pci_alloc(); /* Get the pci_access structure */
20 /* Set all options you want -- here we stick with the defaults */
21 pci_init(pacc); /* Initialize the PCI library */
22 pci_scan_bus(pacc); /* We want to get the list of devices */
23 for (dev=pacc->devices; dev; dev=dev->next) /* Iterate over all devices */
24 {
25 pci_fill_info(dev, PCI_FILL_IDENT | PCI_FILL_BASES | PCI_FILL_CLASS); /* Fill in header info we need */
26 c = pci_read_byte(dev, PCI_INTERRUPT_PIN); /* Read config register directly */
27 printf("%04x:%02x:%02x.%d vendor=%04x device=%04x class=%04x irq=%d (pin %d) base0=%lx",
28 dev->domain, dev->bus, dev->dev, dev->func, dev->vendor_id, dev->device_id,
29 dev->device_class, dev->irq, c, (long) dev->base_addr[0]);
30
31 /* Look up and print the full name of the device */
32 name = pci_lookup_name(pacc, namebuf, sizeof(namebuf), PCI_LOOKUP_DEVICE, dev->vendor_id, dev->device_id);
33 printf(" (%s)\n", name);
34 }
35 pci_cleanup(pacc); /* Close everything */
36 return 0;
37 }
38