1 files changed, 75 insertions, 0 deletions
diff --git a/src/device/agp_device.c b/src/device/agp_device.c
new file mode 100644
index 0000000000..7e510f8eee
--- /dev/null
+++ b/src/device/agp_device.c
@@ -0,0 +1,75 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2005 Linux Networx
+ * (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/agp.h>
+
+static void agp_tune_dev(device_t dev)
+{
+	unsigned int cap;
+
+	cap = pci_find_capability(dev, PCI_CAP_ID_AGP);
+	if (!cap)
+		return;
+
+	/* The OS is responsible for AGP tuning so do nothing here. */
+}
+
+unsigned int agp_scan_bus(struct bus *bus, unsigned int min_devfn,
+			  unsigned int max_devfn, unsigned int max)
+{
+	device_t child;
+
+	max = pci_scan_bus(bus, min_devfn, max_devfn, max);
+
+	for (child = bus->children; child; child = child->sibling) {
+		if ((child->path.pci.devfn < min_devfn) ||
+		    (child->path.pci.devfn > max_devfn)) {
+			continue;
+		}
+		agp_tune_dev(child);
+	}
+
+	return max;
+}
+
+unsigned int agp_scan_bridge(device_t dev, unsigned int max)
+{
+	return do_pci_scan_bridge(dev, max, agp_scan_bus);
+}
+
+/** Default device operations for AGP bridges. */
+static struct pci_operations agp_bus_ops_pci = {
+	.set_subsystem = 0,
+};
+
+struct device_operations default_agp_ops_bus = {
+	.read_resources   = pci_bus_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_bus_enable_resources,
+	.init             = 0,
+	.scan_bus         = agp_scan_bridge,
+	.enable           = 0,
+	.reset_bus        = pci_bus_reset,
+	.ops_pci          = &agp_bus_ops_pci,
+};