2 * This file is part of the coreboot project.
4 * Copyright (C) 2010 Advanced Micro Devices, Inc.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
27 #define SMBUS_IO_BASE 0x6000 /* Is it a temporary SMBus I/O base address? */
30 #define SMBHSTSTAT 0x0
31 #define SMBSLVSTAT 0x1
32 #define SMBHSTCTRL 0x2
34 #define SMBHSTADDR 0x4
35 #define SMBHSTDAT0 0x5
36 #define SMBHSTDAT1 0x6
37 #define SMBHSTBLKDAT 0x7
39 #define SMBSLVCTRL 0x8
40 #define SMBSLVCMD_SHADOW 0x9
50 #define AB_DATA (AB_INDX+4)
52 /* Between 1-10 seconds, We should never timeout normally
53 * Longer than this is just painful when a timeout condition occurs.
55 #define SMBUS_TIMEOUT (100*1000*10)
57 #define abcfg_reg(reg, mask, val) \
58 alink_ab_indx((ABCFG), (reg), (mask), (val))
59 #define axcfg_reg(reg, mask, val) \
60 alink_ab_indx((AXCFG), (reg), (mask), (val))
61 #define axindxc_reg(reg, mask, val) \
62 alink_ax_indx(0, (reg), (mask), (val))
63 #define axindxp_reg(reg, mask, val) \
64 alink_ax_indx(1, (reg), (mask), (val))
66 void alink_ab_indx(u32 reg_space, u32 reg_addr, u32 mask, u32 val);
67 void alink_ax_indx(u32 space, u32 axindc, u32 mask, u32 val);
68 int do_smbus_recv_byte(u32 smbus_io_base, u32 device);
69 int do_smbus_send_byte(u32 smbus_io_base, u32 device, u8 val);
70 int do_smbus_read_byte(u32 smbus_io_base, u32 device, u32 address);
71 int do_smbus_write_byte(u32 smbus_io_base, u32 device, u32 address, u8 val);