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/* $XFree86: xc/programs/Xserver/hw/xfree86/SuperProbe/NCR.c,v 3.5 1996/12/23 06:31:19 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: NCR.c /main/6 1996/10/24 07:09:54 kaleb $ */
#include "Probe.h"
static Word Ports[] = {SEQ_IDX, SEQ_REG};
#define NUMPORTS (sizeof(Ports)/sizeof(Word))
Chip_Descriptor NCR_Descriptor = {
"NCR",
Probe_NCR,
Ports,
NUMPORTS,
FALSE,
FALSE,
TRUE,
NULL,
};
Bool Probe_NCR(Chipset)
int *Chipset;
{
Bool result = FALSE;
Byte old, tmp;
EnableIOPorts(NUMPORTS, Ports);
if (testinx2(SEQ_IDX, 0x05, 0x05))
{
old = rdinx(SEQ_IDX, 0x05);
wrinx(SEQ_IDX, 0x05, 0x00);
if (!testinx2(SEQ_IDX, 0x10, 0xFF))
{
wrinx(SEQ_IDX, 0x05, 0x01);
if (testinx2(SEQ_IDX, 0x10, 0xFF))
{
result = TRUE;
tmp = rdinx(SEQ_IDX, 0x08) >> 4;
if (tmp == 0)
{
*Chipset = CHIP_NCR77C22;
}
else if (tmp == 1)
{
*Chipset = CHIP_NCR77C21;
}
else if (tmp == 2)
{
if ((rdinx(SEQ_IDX, 0x08) & 0x0F) >= 8)
{
*Chipset = CHIP_NCR77C22EP;
}
else
{
*Chipset = CHIP_NCR77C22E;
}
}
else if (tmp == 3)
{
*Chipset = CHIP_NCR77C32B;
}
else
{
Chip_data = tmp;
*Chipset = CHIP_NCR_UNK;
}
}
}
wrinx(SEQ_IDX, 0x05, old);
}
DisableIOPorts(NUMPORTS, Ports);
return(result);
}
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