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authorMartin Mares <mj@ucw.cz>2008-02-17 23:27:16 +0100
committerMartin Mares <mj@ucw.cz>2008-02-17 23:27:16 +0100
commitbc46bc3902065d0209eb96fbe4d7dd92c2b534ee (patch)
treebfb8f323e57a683a9d5472894a75dd5f8d71492a /example.c
parent538a2423ae5a3af5ec26bb0b943df5b19c35dc9f (diff)
downloadpciutils-bc46bc3902065d0209eb96fbe4d7dd92c2b534ee.tar.gz
Moved the example program from lib/example.c to example.c.
Also, include it in the default targets, so that we always check that it builds correctly.
Diffstat (limited to 'example.c')
-rw-r--r--example.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/example.c b/example.c
new file mode 100644
index 0000000..c7e4e8a
--- /dev/null
+++ b/example.c
@@ -0,0 +1,32 @@
+/*
+ * The PCI Library -- Example of use (simplistic lister of PCI devices)
+ *
+ * Written by Martin Mares and put to public domain. You can do
+ * with it anything you want, but I don't give you any warranty.
+ */
+
+#include <stdio.h>
+
+#include "lib/pci.h"
+
+int main(void)
+{
+ struct pci_access *pacc;
+ struct pci_dev *dev;
+ unsigned int c;
+
+ pacc = pci_alloc(); /* Get the pci_access structure */
+ /* Set all options you want -- here we stick with the defaults */
+ pci_init(pacc); /* Initialize the PCI library */
+ pci_scan_bus(pacc); /* We want to get the list of devices */
+ for(dev=pacc->devices; dev; dev=dev->next) /* Iterate over all devices */
+ {
+ pci_fill_info(dev, PCI_FILL_IDENT | PCI_FILL_BASES | PCI_FILL_CLASS); /* Fill in header info we need */
+ c = pci_read_byte(dev, PCI_INTERRUPT_PIN); /* Read config register directly */
+ printf("%02x:%02x.%d vendor=%04x device=%04x class=%04x irq=%d (pin %d) base0=%lx\n",
+ dev->bus, dev->dev, dev->func, dev->vendor_id, dev->device_id,
+ dev->device_class, dev->irq, c, dev->base_addr[0]);
+ }
+ pci_cleanup(pacc); /* Close everything */
+ return 0;
+}