/* * 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. * Copyright (C) 2007 Silicon Integrated Systems Corp. (SiS) * Written by Morgan Tsai <my_tsai@sis.com> for SiS. * * 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. * * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include <device/smbus_def.h> #define SMBHSTSTAT 0x1 #define SMBHSTPRTCL 0x0 #define SMBHSTCMD 0x3 #define SMBXMITADD 0x2 #define SMBHSTDAT0 0x4 #define SMBHSTDAT1 0x5 /* 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) int smbus_wait_until_ready(unsigned smbus_io_base); int smbus_wait_until_done(unsigned smbus_io_base); int do_smbus_recv_byte(unsigned smbus_io_base, unsigned device); int do_smbus_send_byte(unsigned smbus_io_base, unsigned device, unsigned char val); int smbus_read_byte(unsigned device, unsigned address); int smbus_write_byte(unsigned device, unsigned address, unsigned char val);