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-rw-r--r--src/southbridge/amd/cs5536/smbus2.h317
1 files changed, 0 insertions, 317 deletions
diff --git a/src/southbridge/amd/cs5536/smbus2.h b/src/southbridge/amd/cs5536/smbus2.h
deleted file mode 100644
index dea08a437c..0000000000
--- a/src/southbridge/amd/cs5536/smbus2.h
+++ /dev/null
@@ -1,317 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2007 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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
- */
-
-#define SMBUS_ERROR -1
-#define SMBUS_WAIT_UNTIL_READY_TIMEOUT -2
-#define SMBUS_WAIT_UNTIL_DONE_TIMEOUT -3
-
-#define SMB_SDA 0x00
-#define SMB_STS 0x01
-#define SMB_CTRL_STS 0x02
-#define SMB_CTRL1 0x03
-#define SMB_ADD 0x04
-#define SMB_CTRL2 0x05
-#define SMB_CTRL3 0x06
-
-#define SMB_STS_SLVSTP (0x01 << 7)
-#define SMB_STS_SDAST (0x01 << 6)
-#define SMB_STS_BER (0x01 << 5)
-#define SMB_STS_NEGACK (0x01 << 4)
-#define SMB_STS_STASTR (0x01 << 3)
-#define SMB_STS_NMATCH (0x01 << 2)
-#define SMB_STS_MASTER (0x01 << 1)
-#define SMB_STS_XMIT (0x01 << 0)
-
-#define SMB_CSTS_TGSCL (0x01 << 5)
-#define SMB_CSTS_TSDA (0x01 << 4)
-#define SMB_CSTS_GCMTCH (0x01 << 3)
-#define SMB_CSTS_MATCH (0x01 << 2)
-#define SMB_CSTS_BB (0x01 << 1)
-#define SMB_CSTS_BUSY (0x01 << 0)
-
-#define SMB_CTRL1_STASTRE (0x01 << 7)
-#define SMB_CTRL1_NMINTE (0x01 << 6)
-#define SMB_CTRL1_GCMEN (0x01 << 5)
-#define SMB_CTRL1_ACK (0x01 << 4)
-#define SMB_CTRL1_RSVD (0x01 << 3)
-#define SMB_CTRL1_INTEN (0x01 << 2)
-#define SMB_CTRL1_STOP (0x01 << 1)
-#define SMB_CTRL1_START (0x01 << 0)
-
-#define SMB_ADD_SAEN (0x01 << 7)
-
-#define SMB_CTRL2_ENABLE 0x01
-
-#define SMBUS_TIMEOUT (100*1000*10)
-#define SMBUS_STATUS_MASK 0xfbff
-
-static void smbus_delay(void)
-{
- inb(0x80);
-}
-
-static int smbus_wait(unsigned smbus_io_base)
-{
- unsigned long loops = SMBUS_TIMEOUT;
- unsigned char val;
-
- do {
- smbus_delay();
- val = inb(smbus_io_base + SMB_STS);
- if ((val & SMB_STS_SDAST) != 0)
- break;
- if (val & (SMB_STS_BER | SMB_STS_NEGACK)) {
- printk(BIOS_DEBUG, "SMBUS WAIT ERROR %x\n", val);
- return SMBUS_ERROR;
- }
- } while (--loops);
-
- outb(0, smbus_io_base + SMB_STS);
- return loops ? 0 : SMBUS_WAIT_UNTIL_READY_TIMEOUT;
-}
-
-static int smbus_write(unsigned smbus_io_base, unsigned char byte)
-{
-
- outb(byte, smbus_io_base + SMB_SDA);
- return smbus_wait(smbus_io_base);
-}
-
-/* generate a smbus start condition */
-static int smbus_start_condition(unsigned smbus_io_base)
-{
- unsigned char val;
-
- /* issue a START condition */
- val = inb(smbus_io_base + SMB_CTRL1);
- outb(val | SMB_CTRL1_START, smbus_io_base + SMB_CTRL1);
-
- /* check for bus conflict */
- val = inb(smbus_io_base + SMB_STS);
- if ((val & SMB_STS_BER) != 0)
- return SMBUS_ERROR;
-
- return smbus_wait(smbus_io_base);
-}
-
-static int smbus_check_stop_condition(unsigned smbus_io_base)
-{
- unsigned char val;
- unsigned long loops;
- loops = SMBUS_TIMEOUT;
- /* check for SDA status */
- do {
- smbus_delay();
- val = inb(smbus_io_base + SMB_CTRL1);
- if ((val & SMB_CTRL1_STOP) == 0) {
- break;
- }
- } while (--loops);
- return loops ? 0 : SMBUS_WAIT_UNTIL_READY_TIMEOUT;
-
- /* Make sure everything is cleared and ready to go */
-
- val = inb(smbus_io_base + SMB_CTRL1);
- outb(val & ~(SMB_CTRL1_STASTRE | SMB_CTRL1_NMINTE),
- smbus_io_base + SMB_CTRL1);
-
- outb(SMB_STS_BER | SMB_STS_NEGACK | SMB_STS_STASTR,
- smbus_io_base + SMB_STS);
-
- val = inb(smbus_io_base + SMB_CTRL_STS);
- outb(val | SMB_CSTS_BB, smbus_io_base + SMB_CTRL_STS);
-}
-
-static int smbus_stop_condition(unsigned smbus_io_base)
-{
- unsigned char val;
- val = inb(smbus_io_base + SMB_CTRL1);
- outb(SMB_CTRL1_STOP, smbus_io_base + SMB_CTRL1);
-
- return 0;
-}
-
-static int smbus_ack(unsigned smbus_io_base, int state)
-{
- unsigned char val = inb(smbus_io_base + SMB_CTRL1);
-
- if (state)
- outb(val | SMB_CTRL1_ACK, smbus_io_base + SMB_CTRL1);
- else
- outb(val & ~SMB_CTRL1_ACK, smbus_io_base + SMB_CTRL1);
-
- return 0;
-}
-
-static int smbus_send_slave_address(unsigned smbus_io_base,
- unsigned char device)
-{
- unsigned char val;
-
- /* send the slave address */
- outb(device, smbus_io_base + SMB_SDA);
-
- /* check for bus conflict and NACK */
- val = inb(smbus_io_base + SMB_STS);
- if (((val & SMB_STS_BER) != 0) || ((val & SMB_STS_NEGACK) != 0)) {
- printk(BIOS_DEBUG, "SEND SLAVE ERROR (%x)\n", val);
- return SMBUS_ERROR;
- }
- return smbus_wait(smbus_io_base);
-}
-
-static int smbus_send_command(unsigned smbus_io_base, unsigned char command)
-{
- unsigned char val;
-
- /* send the command */
- outb(command, smbus_io_base + SMB_SDA);
-
- /* check for bus conflict and NACK */
- val = inb(smbus_io_base + SMB_STS);
- if (((val & SMB_STS_BER) != 0) || ((val & SMB_STS_NEGACK) != 0))
- return SMBUS_ERROR;
-
- return smbus_wait(smbus_io_base);
-}
-
-static void _doread(unsigned smbus_io_base, unsigned char device,
- unsigned char address, unsigned char *data, int count)
-{
- int ret;
- int index = 0;
- unsigned char val;
-
- if ((ret = smbus_check_stop_condition(smbus_io_base)))
- goto err;
-
- index++;
-
- if ((ret = smbus_start_condition(smbus_io_base)))
- goto err;
-
- index++; /* 2 */
- if ((ret = smbus_send_slave_address(smbus_io_base, device)))
- goto err;
-
- index++;
- if ((ret = smbus_send_command(smbus_io_base, address)))
- goto err;
-
- index++;
- if ((ret = smbus_start_condition(smbus_io_base)))
- goto err;
-
- /* Clear the ack for multiple byte reads */
- smbus_ack(smbus_io_base, (count == 1) ? 1 : 0);
-
- index++;
- if ((ret = smbus_send_slave_address(smbus_io_base, device | 0x01)))
- goto err;
-
- while (count) {
- /* Set the ACK if this is the next to last byte */
- smbus_ack(smbus_io_base, (count == 2) ? 1 : 0);
-
- /* Set the stop bit if this is the last byte to read */
-
- if (count == 1)
- smbus_stop_condition(smbus_io_base);
-
- val = inb(smbus_io_base + SMB_SDA);
- *data++ = val;
-
- if (count > 1) {
- ret = smbus_wait(smbus_io_base);
- if (ret)
- return;
- }
-
- count--;
- }
-
- return;
-
- err:
- printk(BIOS_DEBUG, "SMBUS READ ERROR (%d): %d\n", index, ret);
-}
-
-static inline unsigned char do_smbus_read_byte(unsigned smbus_io_base,
- unsigned char device, unsigned char address)
-{
- unsigned char val = 0;
- _doread(smbus_io_base, device, address, &val, sizeof(val));
- return val;
-}
-
-static inline unsigned short do_smbus_read_word(unsigned smbus_io_base,
- unsigned char device, unsigned char address)
-{
- unsigned short val = 0;
- _doread(smbus_io_base, device, address, (unsigned char *)&val,
- sizeof(val));
- return val;
-}
-
-static int _dowrite(unsigned smbus_io_base, unsigned char device,
- unsigned char address, unsigned char *data, int count)
-{
-
- int ret;
-
- if ((ret = smbus_check_stop_condition(smbus_io_base)))
- goto err;
-
- if ((ret = smbus_start_condition(smbus_io_base)))
- goto err;
-
- if ((ret = smbus_send_slave_address(smbus_io_base, device)))
- goto err;
-
- if ((ret = smbus_send_command(smbus_io_base, address)))
- goto err;
-
- while (count) {
- if ((ret = smbus_write(smbus_io_base, *data++)))
- goto err;
- count--;
- }
-
- smbus_stop_condition(smbus_io_base);
- return 0;
-
- err:
- printk(BIOS_DEBUG, "SMBUS WRITE ERROR: %d\n", ret);
- return -1;
-}
-
-static inline int do_smbus_write_byte(unsigned smbus_io_base,
- unsigned char device, unsigned char address, unsigned char data)
-{
- return _dowrite(smbus_io_base, device, address,
- (unsigned char *)&data, 1);
-}
-
-static inline int do_smbus_write_word(unsigned smbus_io_base,
- unsigned char device, unsigned char address, unsigned short data)
-{
- return _dowrite(smbus_io_base, device, address, (unsigned char *)&data,
- 2);
-}
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