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/* $XFree86: xc/programs/Xserver/hw/xfree86/SuperProbe/UMC.c,v 3.3 1996/02/04 08:57:13 dawes Exp $ */
/*
* (c) Copyright 1993,1994 by David Wexelblat <dwex@xfree86.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* DAVID WEXELBLAT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of David Wexelblat shall not be
* used in advertising or otherwise to promote the sale, use or other dealings
* in this Software without prior written authorization from David Wexelblat.
*
*/
/* $XConsortium: UMC.c /main/5 1996/02/21 17:12:56 kaleb $ */
#include "Probe.h"
static Word Ports[] = {0x3BF, SEQ_IDX, SEQ_REG};
#define NUMPORTS (sizeof(Ports)/sizeof(Word))
static int MemProbe_UMC __STDCARGS((int));
Chip_Descriptor UMC_Descriptor = {
"UMC",
Probe_UMC,
Ports,
NUMPORTS,
FALSE,
FALSE,
TRUE,
MemProbe_UMC,
};
Bool Probe_UMC(Chipset)
int *Chipset;
{
Bool result = FALSE;
Byte old;
EnableIOPorts(NUMPORTS, Ports);
old = inp(0x3BF);
outp(0x3BF, 0x03);
if (!testinx(SEQ_IDX, 0x06))
{
outp(0x3BF, 0xAC);
if (testinx(SEQ_IDX, 0x06))
{
result = TRUE;
*Chipset = CHIP_UMC_408;
}
}
outp(0x3BF, old);
DisableIOPorts(NUMPORTS, Ports);
return(result);
}
/* ARGSUSED */
static int MemProbe_UMC(Chipset)
int Chipset;
{
Byte old;
int Mem = 0;
EnableIOPorts(NUMPORTS, Ports);
/*
* Unlock
*/
old = inp(0x3BF);
outp(0x3BF, 0xAC);
/*
* Check
*/
switch(rdinx(SEQ_IDX, 0x07) >> 6)
{
case 0x00:
Mem = 256;
break;
case 0x01:
Mem = 512;
break;
case 0x02:
case 0x03:
Mem = 1024;
break;
}
/*
* Lock
*/
outp(0x3BF, old);
DisableIOPorts(NUMPORTS, Ports);
return(Mem);
}
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