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 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