LIBPCI: added PCI layer to cpukit/libpci

1 files changed, 36 insertions, 0 deletions

diff --git a/cpukit/libpci/pci_get_dev.c b/cpukit/libpci/pci_get_dev.c
new file mode 100644
index 0000000000..5e07653e6c
--- /dev/null
+++ b/cpukit/libpci/pci_get_dev.c
@@ -0,0 +1,36 @@
+/*  PCI Help function, Find a PCI device by BUS|SLOT|FUNCTION
+ *
+ *  COPYRIGHT (c) 2010.
+ *  Cobham Gaisler AB.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ */
+
+#include <pci.h>
+#include <pci/cfg.h>
+
+static int compare_dev_pcidev(struct pci_dev *dev, void *arg)
+{
+	pci_dev_t pcidev = (unsigned)arg;
+
+	if (dev->busdevfun == pcidev)
+		return (int)dev;
+	else
+		return 0;
+}
+
+/* Get a Device in PCI device tree located in RAM by PCI BUS|SLOT|FUNCTION */
+int pci_get_dev(pci_dev_t pcidev, struct pci_dev **ppdev)
+{
+	int result;
+
+	result = pci_for_each_dev(compare_dev_pcidev, (void *)(unsigned)pcidev);
+	if (ppdev)
+		*ppdev = (struct pci_dev *)result;
+	if (result == 0)
+		return -1;
+	else
+		return 0;
+}