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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.
* Copyright (C) 2006,2007 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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 <device/smbus.h>
#include <arch/io.h>
#include "mcp55.h"
#include "smbus.h"
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, 0x20 + (pbus->link_num * 4));
return do_smbus_recv_byte(res->base, device);
}
static int lsmbus_send_byte(struct device *dev, u8 val)
{
unsigned device;
struct resource *res;
struct bus *pbus;
device = dev->path.i2c.device;
pbus = get_pbus_smbus(dev);
res = find_resource(pbus->dev, 0x20 + (pbus->link_num * 4));
return do_smbus_send_byte(res->base, device, val);
}
static int lsmbus_read_byte(struct device *dev, u8 address)
{
unsigned device;
struct resource *res;
struct bus *pbus;
device = dev->path.i2c.device;
pbus = get_pbus_smbus(dev);
res = find_resource(pbus->dev, 0x20 + (pbus->link_num * 4));
return do_smbus_read_byte(res->base, device, address);
}
static int lsmbus_write_byte(struct device *dev, u8 address, u8 val)
{
unsigned device;
struct resource *res;
struct bus *pbus;
device = dev->path.i2c.device;
pbus = get_pbus_smbus(dev);
res = find_resource(pbus->dev, 0x20 + (pbus->link_num * 4));
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,
};
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
unsigned pm_base;
#endif
static void mcp55_sm_read_resources(struct device *dev)
{
unsigned long index;
/* Get the normal pci resources of this device */
pci_dev_read_resources(dev);
for (index = 0x60; index <= 0x68; index+=4) { // We got another 3.
pci_get_resource(dev, index);
}
compact_resources(dev);
}
static void mcp55_sm_init(struct device *dev)
{
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
struct resource *res;
res = find_resource(dev, 0x60);
if (res)
pm_base = res->base;
#endif
}
static struct device_operations smbus_ops = {
.read_resources = mcp55_sm_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = mcp55_sm_init,
.scan_bus = scan_smbus,
// .enable = mcp55_enable,
.ops_pci = &mcp55_pci_ops,
.ops_smbus_bus = &lops_smbus_bus,
};
static const struct pci_driver smbus_driver __pci_driver = {
.ops = &smbus_ops,
.vendor = PCI_VENDOR_ID_NVIDIA,
.device = PCI_DEVICE_ID_NVIDIA_MCP55_SM2,
};
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