2 * This file is part of the coreboot project.
4 * Copyright (C) 2005 AMD
5 * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "bcm5785_smbus.h"
23 #define SMBUS_IO_BASE 0x1000
25 static void enable_smbus(void)
28 dev = pci_locate_device(PCI_ID(0x1166, 0x0205), 0); // 0x0201?
30 if (dev == PCI_DEV_INVALID) {
31 die("SMBUS controller not found\n");
34 print_debug("SMBus controller enabled\n");
35 /* set smbus iobase */
36 pci_write_config32(dev, 0x90, SMBUS_IO_BASE | 1);
37 /* Set smbus iospace enable */
38 pci_write_config8(dev, 0xd2, 0x03);
39 /* clear any lingering errors, so the transaction will run */
40 outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
43 static inline int smbus_recv_byte(unsigned device)
45 return do_smbus_recv_byte(SMBUS_IO_BASE, device);
48 static inline int smbus_send_byte(unsigned device, unsigned char val)
50 return do_smbus_send_byte(SMBUS_IO_BASE, device, val);
53 static inline int smbus_read_byte(unsigned device, unsigned address)
55 return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
58 static inline int smbus_write_byte(unsigned device, unsigned address, unsigned char val)
60 return do_smbus_write_byte(SMBUS_IO_BASE, device, address, val);