1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
145 lines
3.7 KiB
C
145 lines
3.7 KiB
C
/*
|
|
*
|
|
* BRIEF MODULE DESCRIPTION
|
|
* ITE Semi IT8712 Super I/O functions.
|
|
*
|
|
* Copyright 2001 MontaVista Software Inc.
|
|
* Author: MontaVista Software, Inc.
|
|
* ppopov@mvista.com or source@mvista.com
|
|
*
|
|
* 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
|
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
|
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* 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.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/types.h>
|
|
#include <asm/it8712.h>
|
|
#include <asm/it8172/it8172.h>
|
|
|
|
#ifndef TRUE
|
|
#define TRUE 1
|
|
#endif
|
|
|
|
#ifndef FALSE
|
|
#define FALSE 0
|
|
#endif
|
|
|
|
void LPCEnterMBPnP(void)
|
|
{
|
|
int i;
|
|
unsigned char key[4] = {0x87, 0x01, 0x55, 0x55};
|
|
|
|
for (i = 0; i<4; i++)
|
|
outb(key[i], LPC_KEY_ADDR);
|
|
|
|
}
|
|
|
|
void LPCExitMBPnP(void)
|
|
{
|
|
outb(0x02, LPC_KEY_ADDR);
|
|
outb(0x02, LPC_DATA_ADDR);
|
|
}
|
|
|
|
void LPCSetConfig(char LdnNumber, char Index, char data)
|
|
{
|
|
LPCEnterMBPnP(); // Enter IT8712 MB PnP mode
|
|
outb(0x07, LPC_KEY_ADDR);
|
|
outb(LdnNumber, LPC_DATA_ADDR);
|
|
outb(Index, LPC_KEY_ADDR);
|
|
outb(data, LPC_DATA_ADDR);
|
|
LPCExitMBPnP();
|
|
}
|
|
|
|
char LPCGetConfig(char LdnNumber, char Index)
|
|
{
|
|
char rtn;
|
|
|
|
LPCEnterMBPnP(); // Enter IT8712 MB PnP mode
|
|
outb(0x07, LPC_KEY_ADDR);
|
|
outb(LdnNumber, LPC_DATA_ADDR);
|
|
outb(Index, LPC_KEY_ADDR);
|
|
rtn = inb(LPC_DATA_ADDR);
|
|
LPCExitMBPnP();
|
|
return rtn;
|
|
}
|
|
|
|
int SearchIT8712(void)
|
|
{
|
|
unsigned char Id1, Id2;
|
|
unsigned short Id;
|
|
|
|
LPCEnterMBPnP();
|
|
outb(0x20, LPC_KEY_ADDR); /* chip id byte 1 */
|
|
Id1 = inb(LPC_DATA_ADDR);
|
|
outb(0x21, LPC_KEY_ADDR); /* chip id byte 2 */
|
|
Id2 = inb(LPC_DATA_ADDR);
|
|
Id = (Id1 << 8) | Id2;
|
|
LPCExitMBPnP();
|
|
if (Id == 0x8712)
|
|
return TRUE;
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
void InitLPCInterface(void)
|
|
{
|
|
unsigned char bus, dev_fn;
|
|
unsigned long data;
|
|
|
|
bus = 0;
|
|
dev_fn = 1<<3 | 4;
|
|
|
|
|
|
/* pci cmd, SERR# Enable */
|
|
IT_WRITE(IT_CONFADDR,
|
|
(bus << IT_BUSNUM_SHF) |
|
|
(dev_fn << IT_FUNCNUM_SHF) |
|
|
((0x4 / 4) << IT_REGNUM_SHF));
|
|
IT_READ(IT_CONFDATA, data);
|
|
data |= 0x0100;
|
|
IT_WRITE(IT_CONFADDR,
|
|
(bus << IT_BUSNUM_SHF) |
|
|
(dev_fn << IT_FUNCNUM_SHF) |
|
|
((0x4 / 4) << IT_REGNUM_SHF));
|
|
IT_WRITE(IT_CONFDATA, data);
|
|
|
|
/* setup serial irq control register */
|
|
IT_WRITE(IT_CONFADDR,
|
|
(bus << IT_BUSNUM_SHF) |
|
|
(dev_fn << IT_FUNCNUM_SHF) |
|
|
((0x48 / 4) << IT_REGNUM_SHF));
|
|
IT_READ(IT_CONFDATA, data);
|
|
data = (data & 0xffff00ff) | 0xc400;
|
|
IT_WRITE(IT_CONFADDR,
|
|
(bus << IT_BUSNUM_SHF) |
|
|
(dev_fn << IT_FUNCNUM_SHF) |
|
|
((0x48 / 4) << IT_REGNUM_SHF));
|
|
IT_WRITE(IT_CONFDATA, data);
|
|
|
|
|
|
/* Enable I/O Space Subtractive Decode */
|
|
/* default 0x4C is 0x3f220000 */
|
|
IT_WRITE(IT_CONFADDR,
|
|
(bus << IT_BUSNUM_SHF) |
|
|
(dev_fn << IT_FUNCNUM_SHF) |
|
|
((0x4C / 4) << IT_REGNUM_SHF));
|
|
IT_WRITE(IT_CONFDATA, 0x3f2200f3);
|
|
}
|