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/* $XFree86: xc/programs/Xserver/hw/xfree86/SuperProbe/WD.c,v 3.5 1996/12/23 06:31:45 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: WD.c /main/6 1996/10/24 07:10:17 kaleb $ */
#include "Probe.h"
static Word Ports[] = {0x000, 0x000, GRC_IDX, GRC_REG, SEQ_IDX, SEQ_REG};
#define NUMPORTS (sizeof(Ports)/sizeof(Word))
static int MemProbe_WD __STDCARGS((int));
Chip_Descriptor WD_Descriptor = {
"WD",
Probe_WD,
Ports,
NUMPORTS,
FALSE,
FALSE,
TRUE,
MemProbe_WD,
};
Bool Probe_WD(Chipset)
int *Chipset;
{
Byte old, old1, old2, old3;
Word ver;
Bool result = FALSE;
/* Add CRTC to enabled ports */
Ports[0] = CRTC_IDX;
Ports[1] = CRTC_REG;
EnableIOPorts(NUMPORTS, Ports);
old = rdinx(GRC_IDX, 0x0F);
setinx(GRC_IDX, 0x0F, 0x17); /* Lock registers */
if (!testinx2(GRC_IDX, 0x09, 0x7F))
{
wrinx(GRC_IDX, 0x0F, 0x05); /* Unlock them again */
if (testinx2(GRC_IDX, 0x09, 0x7F))
{
result = TRUE;
old2 = rdinx(CRTC_IDX, 0x29);
/* Unlock WD90Cxx regs */
modinx(CRTC_IDX, 0x29, 0x8F, 0x85);
if (!testinx(CRTC_IDX, 0x2B))
{
*Chipset = CHIP_WD_PVGA1;
}
else
{
old1 = rdinx(SEQ_IDX, 0x06);
wrinx(SEQ_IDX, 0x06, 0x48);
if (!testinx2(SEQ_IDX, 0x07, 0xF0))
{
*Chipset = CHIP_WD_90C00;
}
else if (!testinx(SEQ_IDX, 0x10))
{
if (testinx2(CRTC_IDX, 0x31, 0x68))
{
*Chipset = CHIP_WD_90C22;
}
else if (testinx2(CRTC_IDX, 0x31, 0x90))
{
*Chipset = CHIP_WD_90C20A;
}
else
{
*Chipset = CHIP_WD_90C20;
}
wrinx(CRTC_IDX, 0x34, 0xA6);
if (rdinx(CRTC_IDX, 0x32) & 0x20)
{
wrinx(CRTC_IDX, 0x34, 0x00);
}
}
else if (testinx2(SEQ_IDX, 0x14, 0x0F))
{
old3 = rdinx(CRTC_IDX, 0x34);
wrinx(CRTC_IDX, 0x34, 0x00);
ver = ((rdinx(CRTC_IDX, 0x36) << 8) |
(rdinx(CRTC_IDX, 0x37)));
switch (ver)
{
case 0x3234:
*Chipset = CHIP_WD_90C24;
break;
case 0x3236:
*Chipset = CHIP_WD_90C26;
break;
case 0x3237: /* Guess */
*Chipset = CHIP_WD_90C27;
break;
case 0x3330:
*Chipset = CHIP_WD_90C30;
break;
case 0x3331:
*Chipset = CHIP_WD_90C31;
break;
case 0x3333:
*Chipset = CHIP_WD_90C33;
break;
default:
Chip_data = ver & 0xFF;
*Chipset = CHIP_WD_UNK;
break;
}
wrinx(CRTC_IDX, 0x34, old3);
}
else if (!testinx2(SEQ_IDX, 0x10, 0x04))
{
*Chipset = CHIP_WD_90C10;
}
else
{
*Chipset = CHIP_WD_90C11;
}
wrinx(SEQ_IDX, 0x06, old1);
}
wrinx(CRTC_IDX, 0x29, old2);
}
}
wrinx(0x3CE, 0x0F, old);
DisableIOPorts(NUMPORTS, Ports);
return(result);
}
static int MemProbe_WD(Chipset)
int Chipset;
{
Byte old;
int Mem = 0;
EnableIOPorts(NUMPORTS, Ports);
/*
* Unlock
*/
old = rdinx(GRC_IDX, 0x0F);
wrinx(GRC_IDX, 0x0F, 0x05);
/*
* Check
*/
switch (rdinx(GRC_IDX, 0x0B) >> 6)
{
case 0x00:
case 0x01:
Mem = 256;
break;
case 0x02:
Mem = 512;
break;
case 0x03:
Mem = 1024;
break;
}
if ((Chipset >= CHIP_WD_90C33) &&
(rdinx(CRTC_IDX, 0x3E) & 0x80))
{
Mem = 2048;
}
/*
* Lock
*/
wrinx(GRC_IDX, 0x0F, old);
DisableIOPorts(NUMPORTS, Ports);
return(Mem);
}
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