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Diffstat (limited to 'src/southbridge/amd/sb600/smbus.h')
-rw-r--r-- | src/southbridge/amd/sb600/smbus.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/southbridge/amd/sb600/smbus.h b/src/southbridge/amd/sb600/smbus.h new file mode 100644 index 0000000000..684d0e62c4 --- /dev/null +++ b/src/southbridge/amd/sb600/smbus.h @@ -0,0 +1,64 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 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 + * 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 + */ + +#ifndef SB600_SMBUS_H +#define SB600_SMBUS_H + +#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 SMBSLVCMD_SHADOW 0x9 +#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)) + +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); + +#endif |