| /* |
| * 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 |
| }; |