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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2005 AMD
* Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
*
* 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 "bcm5785.h"
void bcm5785_enable(struct device *dev)
{
struct device *sb_pci_main_dev;
struct device *bus_dev;
// unsigned index;
/* See if we are on the behind the pcix bridge */
bus_dev = dev->bus->dev;
if ((bus_dev->vendor == PCI_VENDOR_ID_SERVERWORKS) &&
(bus_dev->device == 0x0036)) // device under PCI-X Bridge
{
unsigned devfn;
devfn = bus_dev->path.pci.devfn + (1 << 3);
sb_pci_main_dev = pcidev_path_behind(bus_dev->bus, devfn);
// index = ((dev->path.pci.devfn & ~7) >> 3) + 8;
} else if ((bus_dev->vendor == PCI_VENDOR_ID_SERVERWORKS) &&
(bus_dev->device == 0x0104)) // device under PCI Bridge (under PCI-X)
{
unsigned devfn;
devfn = bus_dev->bus->dev->path.pci.devfn + (1 << 3);
sb_pci_main_dev = pcidev_path_behind(bus_dev->bus->dev->bus,
devfn);
// index = ((dev->path.pci.devfn & ~7) >> 3) + 8;
}
else { // same bus
unsigned devfn;
devfn = (dev->path.pci.devfn) & ~7;
if (dev->vendor == PCI_VENDOR_ID_SERVERWORKS) {
if (dev->device == 0x0036) //PCI-X Bridge
{ devfn += (1<<3); }
else if (dev->device == 0x0223) // USB
{ devfn -= (1<<3); }
}
sb_pci_main_dev = pcidev_path_behind(dev->bus, devfn);
// index = dev->path.pci.devfn & 7;
}
if (!sb_pci_main_dev) {
return;
}
// get index now
#if 0
unsigned reg_old, reg;
if (index < 16) {
reg = reg_old = pci_read_config16(sb_pci_main_dev, 0x48);
reg &= ~(1 << index);
if (dev->enabled) {
reg |= (1 << index);
}
if (reg != reg_old) {
pci_write_config16(sb_pci_main_dev, 0x48, reg);
}
}
else if (index == 16) {
reg = reg_old = pci_read_config8(sb_pci_main_dev, 0x47);
reg &= ~(1 << 7);
if (!dev->enabled) {
reg |= (1 << 7);
}
if (reg != reg_old) {
pci_write_config8(sb_pci_main_dev, 0x47, reg);
}
}
#endif
}
void bcm5785_set_subsystem(struct device *dev, unsigned int vendor,
unsigned int device)
{
pci_write_config32(dev, 0x40,
((device & 0xffff) << 16) | (vendor & 0xffff));
}
struct chip_operations southbridge_broadcom_bcm5785_ops = {
CHIP_NAME("Serverworks BCM5785 Southbridge")
.enable_dev = bcm5785_enable,
};
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