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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2004 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 <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include "chip.h"
static void usb1_init(struct device *dev)
{
struct southbridge_nvidia_ck804_config const *conf = dev->chip_info;
if (!conf->usb1_hc_reset)
return;
/*
* Somehow the warm reset does not really reset the USB
* controller. Later, during boot, when the Bus Master bit is
* set, the USB controller trashes the memory, causing weird
* misbehavior. Was detected on Sun Ultra40, where mptable
* was damaged.
*/
u32 bar0 = pci_read_config32(dev, 0x10);
u32 *regs = (u32 *) (bar0 & ~0xfff);
/* OHCI USB HCCommandStatus Register, HostControllerReset bit */
regs[2] |= 1;
}
static struct device_operations usb_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = usb1_init,
.scan_bus = 0,
.ops_pci = &ck804_pci_ops,
};
static const struct pci_driver usb_driver __pci_driver = {
.ops = &usb_ops,
.vendor = PCI_VENDOR_ID_NVIDIA,
.device = PCI_DEVICE_ID_NVIDIA_CK804_USB,
};
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