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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008-2009 coresystems GmbH
*
* 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 <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <device/pci_ids.h>
#include "i82801ix.h"
static void pci_init(struct device *dev)
{
u16 reg16;
u8 reg8;
/* This device has no interrupt */
pci_write_config8(dev, PCI_INTERRUPT_LINE, 0xff);
/* Master Latency Count must be set to 0x04! */
reg8 = pci_read_config8(dev, D30F0_SMLT);
reg8 &= 0x07;
reg8 |= (0x04 << 3);
pci_write_config8(dev, D30F0_SMLT, reg8);
/* Clear errors in status registers */
reg16 = pci_read_config16(dev, PCI_STATUS);
//reg16 |= 0xf900;
pci_write_config16(dev, PCI_STATUS, reg16);
reg16 = pci_read_config16(dev, PCI_SEC_STATUS);
// reg16 |= 0xf900;
pci_write_config16(dev, PCI_SEC_STATUS, reg16);
}
static void set_subsystem(struct device *dev, unsigned vendor, unsigned device)
{
/* NOTE: 0x54 is not the default position! */
if (!vendor || !device) {
pci_write_config32(dev, 0x54,
pci_read_config32(dev, PCI_VENDOR_ID));
} else {
pci_write_config32(dev, 0x54,
((device & 0xffff) << 16) | (vendor & 0xffff));
}
}
static struct pci_operations pci_ops = {
.set_subsystem = set_subsystem,
};
static struct device_operations device_ops = {
.read_resources = pci_bus_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_bus_enable_resources,
.init = pci_init,
.scan_bus = pci_scan_bridge,
.reset_bus = pci_bus_reset,
.ops_pci = &pci_ops,
};
static const unsigned short pci_device_ids[] = {
0x244e, /* Desktop */
0x2448, /* Mobile */
0
};
static const struct pci_driver ich9_pci __pci_driver = {
.ops = &device_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = pci_device_ids,
};
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