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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2003 Tyan Computer
* Written by Yinghai Lu <yhlu@tyan.com> for Tyan Computer.
*
* 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.
*/
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
static void agp3bridge_init(device_t dev)
{
uint8_t byte;
/* Enable BM, MEM and IO */
byte = pci_read_config32(dev, 0x04);
byte |= 0x07;
pci_write_config8(dev, 0x04, byte);
return;
}
static struct device_operations agp3bridge_ops = {
.read_resources = pci_bus_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_bus_enable_resources,
.init = agp3bridge_init,
.scan_bus = pci_scan_bridge,
};
static const struct pci_driver agp3bridge_driver __pci_driver = {
.ops = &agp3bridge_ops,
.vendor = PCI_VENDOR_ID_AMD,
.device = 0x7455, // AGP Bridge
};
static void agp3dev_enable(device_t dev)
{
uint32_t value;
/* AGP enable */
value = pci_read_config32(dev, 0xa8);
value |= (3<<8)|2; //AGP 8x
pci_write_config32(dev, 0xa8, value);
/* enable BM and MEM */
value = pci_read_config32(dev, 0x4);
value |= 6;
pci_write_config32(dev, 0x4, value);
#if 0
/* FIXME: should we add agp aperture base and size here ?
* or it is done by AGP drivers */
#endif
}
static struct pci_operations pci_ops_pci_dev = {
.set_subsystem = pci_dev_set_subsystem,
};
static struct device_operations agp3dev_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = 0,
.scan_bus = 0,
.enable = agp3dev_enable,
.ops_pci = &pci_ops_pci_dev,
};
static const struct pci_driver agp3dev_driver __pci_driver = {
.ops = &agp3dev_ops,
.vendor = PCI_VENDOR_ID_AMD,
.device = 0x7454, //AGP Device
};
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