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* This file is part of the coreboot project.
* Copyright (C) 2010 Advanced Micro Devices, Inc.
* 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
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
#ifndef SB700_SMBUS_H
#define SB700_SMBUS_H
#include <stdint.h>
#include "stddef.h"
#include <arch/io.h>
#define SMBUS_IO_BASE 0x6000 /* Is it a temporary SMBus I/O base address? */
/*SIZE 0x40 */
#define SMBHSTSTAT 0x0
#define SMBSLVSTAT 0x1
#define SMBHSTCTRL 0x2
#define SMBHSTCMD 0x3
#define SMBHSTADDR 0x4
#define SMBHSTDAT0 0x5
#define SMBHSTDAT1 0x6
#define SMBHSTBLKDAT 0x7
#define SMBSLVCTRL 0x8
#define SMBSLVEVT 0xa
#define SMBSLVDAT 0xc
#define AX_INDXC 0
#define AX_INDXP 1
#define AXCFG 2
#define ABCFG 3
#define AB_INDX 0xCD8
#define AB_DATA (AB_INDX+4)
/* Between 1-10 seconds, We should never timeout normally
* Longer than this is just painful when a timeout condition occurs.
#define SMBUS_TIMEOUT (100*1000*10)
#define abcfg_reg(reg, mask, val) \
alink_ab_indx((ABCFG), (reg), (mask), (val))
#define axcfg_reg(reg, mask, val) \
alink_ab_indx((AXCFG), (reg), (mask), (val))
#define axindxc_reg(reg, mask, val) \
alink_ax_indx(0, (reg), (mask), (val))
#define axindxp_reg(reg, mask, val) \
alink_ax_indx(1, (reg), (mask), (val))
void alink_ab_indx(u32 reg_space, u32 reg_addr, u32 mask, u32 val);
void alink_ax_indx(u32 space, u32 axindc, u32 mask, u32 val);
int do_smbus_recv_byte(u32 smbus_io_base, u32 device);
int do_smbus_send_byte(u32 smbus_io_base, u32 device, u8 val);
int do_smbus_read_byte(u32 smbus_io_base, u32 device, u32 address);
int do_smbus_write_byte(u32 smbus_io_base, u32 device, u32 address, u8 val);