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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/pnp.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <pc80/mc146818rtc.h>
#include <pc80/isa-dma.h>
#include <arch/io.h>
#include <device/smbus.h>
#include "bcm5785.h"
#include "smbus.h"
#define NMI_OFF 0
static void sb_init(struct device *dev)
{
uint8_t byte;
uint8_t byte_old;
int nmi_option;
/* Set up NMI on errors */
byte = inb(0x70); // RTC70
byte_old = byte;
nmi_option = NMI_OFF;
get_option(&nmi_option, "nmi");
if (nmi_option) {
byte &= ~(1 << 7); /* set NMI */
} else {
byte |= (1 << 7); // Can not mask NMI from PCI-E and NMI_NOW
}
if (byte != byte_old) {
outb(byte, 0x70);
}
}
static void bcm5785_sb_read_resources(struct device *dev)
{
struct resource *res;
/* Get the normal pci resources of this device */
pci_dev_read_resources(dev);
/* Get Resource for SMBUS */
pci_get_resource(dev, 0x90);
compact_resources(dev);
/* Add an extra subtractive resource for both memory and I/O */
res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
}
static int lsmbus_recv_byte(struct device *dev)
{
unsigned device;
struct resource *res;
struct bus *pbus;
device = dev->path.i2c.device;
pbus = get_pbus_smbus(dev);
res = find_resource(pbus->dev, 0x90);
return do_smbus_recv_byte(res->base, device);
}
static int lsmbus_send_byte(struct device *dev, uint8_t val)
{
unsigned device;
struct resource *res;
struct bus *pbus;
device = dev->path.i2c.device;
pbus = get_pbus_smbus(dev);
res = find_resource(pbus->dev, 0x90);
return do_smbus_send_byte(res->base, device, val);
}
static int lsmbus_read_byte(struct device *dev, uint8_t address)
{
unsigned device;
struct resource *res;
struct bus *pbus;
device = dev->path.i2c.device;
pbus = get_pbus_smbus(dev);
res = find_resource(pbus->dev, 0x90);
return do_smbus_read_byte(res->base, device, address);
}
static int lsmbus_write_byte(struct device *dev, uint8_t address, uint8_t val)
{
unsigned device;
struct resource *res;
struct bus *pbus;
device = dev->path.i2c.device;
pbus = get_pbus_smbus(dev);
res = find_resource(pbus->dev, 0x90);
return do_smbus_write_byte(res->base, device, address, val);
}
static struct smbus_bus_operations lops_smbus_bus = {
.recv_byte = lsmbus_recv_byte,
.send_byte = lsmbus_send_byte,
.read_byte = lsmbus_read_byte,
.write_byte = lsmbus_write_byte,
};
static void lpci_set_subsystem(struct device *dev, unsigned vendor,
unsigned device)
{
pci_write_config32(dev, 0x2c,
((device & 0xffff) << 16) | (vendor & 0xffff));
}
static struct pci_operations lops_pci = {
.set_subsystem = lpci_set_subsystem,
};
static struct device_operations sb_ops = {
.read_resources = bcm5785_sb_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = sb_init,
.scan_bus = scan_smbus,
// .enable = bcm5785_enable,
.ops_pci = &lops_pci,
.ops_smbus_bus = &lops_smbus_bus,
};
static const struct pci_driver sb_driver __pci_driver = {
.ops = &sb_ops,
.vendor = PCI_VENDOR_ID_SERVERWORKS,
.device = PCI_DEVICE_ID_SERVERWORKS_BCM5785_SB_PCI_MAIN,
};
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