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/*
* This file is part of the coreboot project.
*
* 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.
*/
#include "amd8111_smbus.h"
#define SMBUS_IO_BASE 0x0f00
static void enable_smbus(void)
{
pci_devfn_t dev;
uint8_t enable;
dev = pci_locate_device(PCI_ID(0x1022, 0x746b), 0);
if (dev == PCI_DEV_INVALID) {
die("SMBUS controller not found\n");
}
pci_write_config32(dev, 0x58, SMBUS_IO_BASE | 1);
enable = pci_read_config8(dev, 0x41);
pci_write_config8(dev, 0x41, enable | (1 << 7));
/* check that we can see the smbus controller I/O. */
if (inw(SMBUS_IO_BASE)==0xFF){
die("SMBUS controller I/O not found\n");
}
/* clear any lingering errors, so the transaction will run */
outw(inw(SMBUS_IO_BASE + SMBGSTATUS), SMBUS_IO_BASE + SMBGSTATUS);
printk(BIOS_SPEW, "SMBus controller enabled\n");
}
static inline int smbus_recv_byte(unsigned int device)
{
return do_smbus_recv_byte(SMBUS_IO_BASE, device);
}
static inline int smbus_send_byte(unsigned int device, unsigned char val)
{
return do_smbus_send_byte(SMBUS_IO_BASE, device, val);
}
static inline int smbus_read_byte(unsigned int device, unsigned int address)
{
return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
}
static inline int smbus_write_byte(unsigned int device, unsigned int address,
unsigned char val)
{
return do_smbus_write_byte(SMBUS_IO_BASE, device, address, val);
}
static inline int smbus_block_read(unsigned int device, unsigned cmd, u8 bytes,
u8 *buf)
{
return do_smbus_block_read(SMBUS_IO_BASE, device, cmd, bytes, buf);
}
static inline int smbus_block_write(unsigned int device, unsigned cmd, u8 bytes,
const u8 *buf)
{
return do_smbus_block_write(SMBUS_IO_BASE, device, cmd, bytes, buf);
}
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