diff options
Diffstat (limited to 'src/southbridge/amd/sb600/stage1_smbus.c')
-rw-r--r-- | src/southbridge/amd/sb600/stage1_smbus.c | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/src/southbridge/amd/sb600/stage1_smbus.c b/src/southbridge/amd/sb600/stage1_smbus.c deleted file mode 100644 index 57f399f60f..0000000000 --- a/src/southbridge/amd/sb600/stage1_smbus.c +++ /dev/null @@ -1,229 +0,0 @@ -/* - * 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 - */ -#include <types.h> -#include <lib.h> -#include <console.h> -#include <device/pci.h> -#include <msr.h> -#include <legacy.h> -#include <device/pci.h> -#include <statictree.h> -#include <config.h> -#include <io.h> -#include "sb600_smbus.h" - -void smbus_delay(void) -{ - inb(0x80); -} - -int smbus_wait_until_ready(u32 smbus_io_base) -{ - unsigned long loops; - loops = SMBUS_TIMEOUT; - do { - u8 val; - val = inb(smbus_io_base + SMBHSTSTAT); - val &= 0x1f; - if (val == 0) { /* ready now */ - return 0; - } - outb(val, smbus_io_base + SMBHSTSTAT); - } while (--loops); - return -2; /* time out */ -} - -int smbus_wait_until_done(u32 smbus_io_base) -{ - unsigned long loops; - loops = SMBUS_TIMEOUT; - do { - u8 val; - - val = inb(smbus_io_base + SMBHSTSTAT); - val &= 0x1f; /* mask off reserved bits */ - if (val & 0x1c) { - return -5; /* error */ - } - if (val == 0x02) { - outb(val, smbus_io_base + SMBHSTSTAT); /* clear status */ - return 0; - } - } while (--loops); - return -3; /* timeout */ -} - -int do_smbus_recv_byte(u32 smbus_io_base, u32 device) -{ - u8 byte; - - if (smbus_wait_until_ready(smbus_io_base) < 0) { - return -2; /* not ready */ - } - - /* set the device I'm talking too */ - outb(((device & 0x7f) << 1) | 1, smbus_io_base + SMBHSTADDR); - - byte = inb(smbus_io_base + SMBHSTCTRL); - byte &= 0xe3; /* Clear [4:2] */ - byte |= (1 << 2) | (1 << 6); /* Byte data read/write command, start the command */ - outb(byte, smbus_io_base + SMBHSTCTRL); - - /* poll for transaction completion */ - if (smbus_wait_until_done(smbus_io_base) < 0) { - return -3; /* timeout or error */ - } - - /* read results of transaction */ - byte = inb(smbus_io_base + SMBHSTCMD); - - return byte; -} - -int do_smbus_send_byte(u32 smbus_io_base, u32 device, - u8 val) -{ - u8 byte; - - if (smbus_wait_until_ready(smbus_io_base) < 0) { - return -2; /* not ready */ - } - - /* set the command... */ - outb(val, smbus_io_base + SMBHSTCMD); - - /* set the device I'm talking too */ - outb(((device & 0x7f) << 1) | 0, smbus_io_base + SMBHSTADDR); - - byte = inb(smbus_io_base + SMBHSTCTRL); - byte &= 0xe3; /* Clear [4:2] */ - byte |= (1 << 2) | (1 << 6); /* Byte data read/write command, start the command */ - outb(byte, smbus_io_base + SMBHSTCTRL); - - /* poll for transaction completion */ - if (smbus_wait_until_done(smbus_io_base) < 0) { - return -3; /* timeout or error */ - } - - return 0; -} - -int do_smbus_read_byte(u32 smbus_io_base, u32 device, - u32 address) -{ - u8 byte; - - if (smbus_wait_until_ready(smbus_io_base) < 0) { - return -2; /* not ready */ - } - - /* set the command/address... */ - outb(address & 0xff, smbus_io_base + SMBHSTCMD); - - /* set the device I'm talking to */ - outb(((device & 0x7f) << 1) | 1, smbus_io_base + SMBHSTADDR); - - byte = inb(smbus_io_base + SMBHSTCTRL); - byte &= 0xe3; /* Clear [4:2] */ - byte |= (1 << 3) | (1 << 6); /* Byte data read/write command, start the command */ - outb(byte, smbus_io_base + SMBHSTCTRL); - - /* poll for transaction completion */ - if (smbus_wait_until_done(smbus_io_base) < 0) { - return -3; /* timeout or error */ - } - - /* read results of transaction */ - byte = inb(smbus_io_base + SMBHSTDAT0); - - return byte; -} - -int do_smbus_write_byte(u32 smbus_io_base, u32 device, - u32 address, u8 val) -{ - u8 byte; - - if (smbus_wait_until_ready(smbus_io_base) < 0) { - return -2; /* not ready */ - } - - /* set the command/address... */ - outb(address & 0xff, smbus_io_base + SMBHSTCMD); - - /* set the device I'm talking to */ - outb(((device & 0x7f) << 1) | 0, smbus_io_base + SMBHSTADDR); - - /* output value */ - outb(val, smbus_io_base + SMBHSTDAT0); - - byte = inb(smbus_io_base + SMBHSTCTRL); - byte &= 0xe3; /* Clear [4:2] */ - byte |= (1 << 3) | (1 << 6); /* Byte data read/write command, start the command */ - outb(byte, smbus_io_base + SMBHSTCTRL); - - /* poll for transaction completion */ - if (smbus_wait_until_done(smbus_io_base) < 0) { - return -3; /* timeout or error */ - } - - return 0; -} - -void alink_ab_indx(unsigned int reg_space, unsigned int reg_addr, - unsigned int mask, unsigned int val) -{ - unsigned int tmp; - outl((reg_space & 0x3) << 30 | reg_addr, AB_INDX); - tmp = inl(AB_DATA); - - tmp &= ~mask; - tmp |= val; - - /* printk_debug("about write %x, index=%x", tmp, (reg_space&0x3)<<30 | reg_addr); */ - outl((reg_space & 0x3) << 30 | reg_addr, AB_INDX); /* probably we dont have to do it again. */ - outl(tmp, AB_DATA); -} - -/* space = 0: AX_INDXC, AX_DATAC -* space = 1: AX_INDXP, AX_DATAP - */ -void alink_ax_indx(unsigned int space /*c or p? */ , unsigned int axindc, - unsigned int mask, unsigned int val) -{ - unsigned int tmp; - - /* read axindc to tmp */ - outl(space << 30 | space << 3 | 0x30, AB_INDX); - outl(axindc, AB_DATA); - outl(space << 30 | space << 3 | 0x34, AB_INDX); - tmp = inl(AB_DATA); - - tmp &= ~mask; - tmp |= val; - - /* write tmp */ - outl(space << 30 | space << 3 | 0x30, AB_INDX); - outl(axindc, AB_DATA); - outl(space << 30 | space << 3 | 0x34, AB_INDX); - outl(tmp, AB_DATA); -} - - - |