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/*
* This file is part of the LinuxBIOS project.
*
* Copyright (C) 2007 Rudolf Marek <r.marek@assembler.cz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License v2 as published by
* the Free Software Foundation.
*
* 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>
#define SATA_MISC_CTRL 0x45
static void sata_init(struct device *dev)
{
u8 reg;
printk_debug("Configuring VIA SATA controller\n");
/* Class IDE Disk */
reg = pci_read_config8(dev, SATA_MISC_CTRL);
reg &= 0x7f; /* Sub Class Write Protect off */
pci_write_config8(dev, SATA_MISC_CTRL, reg);
/* Change the device class to SATA from RAID. */
pci_write_config8(dev, PCI_CLASS_DEVICE, 0x1);
reg |= 0x80; /* Sub Class Write Protect on */
pci_write_config8(dev, SATA_MISC_CTRL, reg);
}
static const struct device_operations sata_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = sata_init,
.enable = 0,
.ops_pci = 0,
};
static const struct pci_driver northbridge_driver __pci_driver = {
.ops = &sata_ops,
.vendor = PCI_VENDOR_ID_VIA,
.device = PCI_DEVICE_ID_VIA_VT6420_SATA,
};
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