/* $XFree86: xc/programs/Xserver/hw/xfree86/SuperProbe/UMC.c,v 3.4 1996/12/23 06:31:41 dawes Exp $ */ /* * (c) Copyright 1993,1994 by David Wexelblat * * 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); }