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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 u32 final_reg;
static struct device *find_lpc_dev(struct device *dev, unsigned int devfn)
{
struct device *lpc_dev;
lpc_dev = pcidev_path_behind(dev->bus, devfn);
if (!lpc_dev)
return lpc_dev;
if ((lpc_dev->vendor != PCI_VENDOR_ID_NVIDIA)
|| ((lpc_dev->device != PCI_DEVICE_ID_NVIDIA_CK804_LPC)
&& (lpc_dev->device != PCI_DEVICE_ID_NVIDIA_CK804_PRO)
&& (lpc_dev->device != PCI_DEVICE_ID_NVIDIA_CK804_SLAVE)))
{
u32 id;
id = pci_read_config32(lpc_dev, PCI_VENDOR_ID);
if ((id != (PCI_VENDOR_ID_NVIDIA |
(PCI_DEVICE_ID_NVIDIA_CK804_LPC << 16)))
&& (id != (PCI_VENDOR_ID_NVIDIA |
(PCI_DEVICE_ID_NVIDIA_CK804_PRO << 16)))
&& (id != (PCI_VENDOR_ID_NVIDIA |
(PCI_DEVICE_ID_NVIDIA_CK804_SLAVE << 16))))
{
lpc_dev = 0;
}
}
return lpc_dev;
}
static void ck804_enable(struct device *dev)
{
struct device *lpc_dev;
unsigned int index = 0, index2 = 0, deviceid, vendorid, devfn;
u32 reg_old, reg;
u8 byte;
if (dev->device == 0x0000) {
vendorid = pci_read_config32(dev, PCI_VENDOR_ID);
deviceid = (vendorid >> 16) & 0xffff;
/* vendorid &= 0xffff; */
} else {
/* vendorid = dev->vendor; */
deviceid = dev->device;
}
devfn = (dev->path.pci.devfn) & ~7;
switch (deviceid) {
case PCI_DEVICE_ID_NVIDIA_CK804_SM:
index = 16;
break;
case PCI_DEVICE_ID_NVIDIA_CK804_USB:
devfn -= (1 << 3);
index = 8;
break;
case PCI_DEVICE_ID_NVIDIA_CK804_USB2:
devfn -= (1 << 3);
index = 20;
break;
case PCI_DEVICE_ID_NVIDIA_CK804_NIC:
devfn -= (9 << 3);
index = 10;
break;
case PCI_DEVICE_ID_NVIDIA_CK804_NIC_BRIDGE:
devfn -= (9 << 3);
index = 10;
break;
case PCI_DEVICE_ID_NVIDIA_CK804_ACI:
devfn -= (3 << 3);
index = 12;
break;
case PCI_DEVICE_ID_NVIDIA_CK804_MCI:
devfn -= (3 << 3);
index = 13;
break;
case PCI_DEVICE_ID_NVIDIA_CK804_IDE:
devfn -= (5 << 3);
index = 14;
break;
case PCI_DEVICE_ID_NVIDIA_CK804_SATA0:
devfn -= (6 << 3);
index = 22;
break;
case PCI_DEVICE_ID_NVIDIA_CK804_SATA1:
devfn -= (7 << 3);
index = 18;
break;
case PCI_DEVICE_ID_NVIDIA_CK804_PCI:
devfn -= (8 << 3);
index = 15;
break;
case PCI_DEVICE_ID_NVIDIA_CK804_PCI_E:
devfn -= (0xa << 3);
index2 = 19;
break;
default:
index = 0;
}
if (index2 != 0) {
int i;
for (i = 0; i < 4; i++) {
lpc_dev = find_lpc_dev(dev, devfn - (i << 3));
if (!lpc_dev)
continue;
index2 -= i;
break;
}
if (lpc_dev) {
reg_old = reg = pci_read_config32(lpc_dev, 0xe4);
if (!dev->enabled)
reg |= (1 << index2);
if (reg != reg_old)
pci_write_config32(lpc_dev, 0xe4, reg);
}
index2 = 0;
return;
}
lpc_dev = find_lpc_dev(dev, devfn);
if (!lpc_dev)
return;
if (index == 0) {
final_reg = pci_read_config32(lpc_dev, 0xe8);
final_reg &= ~((1 << 16) | (1 << 8) | (1 << 20) | (1 << 10)
| (1 << 12) | (1 << 13) | (1 << 14) | (1 << 22)
| (1 << 18) | (1 << 15));
pci_write_config32(lpc_dev, 0xe8, final_reg);
reg_old = reg = pci_read_config32(lpc_dev, 0xe4);
reg |= (1 << 20);
if (reg != reg_old)
pci_write_config32(lpc_dev, 0xe4, reg);
byte = pci_read_config8(lpc_dev, 0x74);
byte |= ((1 << 1));
pci_write_config8(dev, 0x74, byte);
byte = pci_read_config8(lpc_dev, 0xdd);
byte |= ((1 << 0) | (1 << 3));
pci_write_config8(dev, 0xdd, byte);
return;
}
if (!dev->enabled)
final_reg |= (1 << index);
if (index == 10) {
reg_old = pci_read_config32(lpc_dev, 0xe8);
if (final_reg != reg_old)
pci_write_config32(lpc_dev, 0xe8, final_reg);
}
}
static void ck804_set_subsystem(struct device *dev, unsigned int vendor,
unsigned int device)
{
pci_write_config32(dev, 0x40,
((device & 0xffff) << 16) | (vendor & 0xffff));
}
struct pci_operations ck804_pci_ops = {
.set_subsystem = ck804_set_subsystem,
};
struct chip_operations southbridge_nvidia_ck804_ops = {
CHIP_NAME("NVIDIA CK804 Southbridge")
.enable_dev = ck804_enable,
};
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