| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2008 Arastra, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * 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 "smbus.h" |
| |
| #define SMBUS_IO_BASE 0x0f00 |
| |
| static void enable_smbus(void) |
| { |
| device_t dev = PCI_DEV(0x0, 0x1f, 0x3); |
| |
| print_spew("SMBus controller enabled\n"); |
| pci_write_config32(dev, 0x20, SMBUS_IO_BASE | 1); |
| pci_write_config8(dev, 0x40, 1); |
| pci_write_config8(dev, 0x4, 1); |
| /* SMBALERT_DIS */ |
| outb(4, SMBUS_IO_BASE + SMBSLVCMD); |
| |
| /* Disable interrupt generation */ |
| outb(0, SMBUS_IO_BASE + SMBHSTCTL); |
| } |
| |
| static __attribute__((unused)) int smbus_read_byte(u32 device, u32 address) |
| { |
| return do_smbus_read_byte(SMBUS_IO_BASE, device, address); |
| } |
| |
| static __attribute__((unused)) int smbus_write_byte(unsigned device, u8 address, u8 data) |
| { |
| return do_smbus_write_byte(SMBUS_IO_BASE, device, address, data); |
| } |