/* $XFree86: xc/programs/Xserver/hw/xfree86/SuperProbe/Weitek.c,v 3.5 1996/12/23 06:31:46 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: Weitek.c /main/6 1996/10/25 06:19:09 kaleb $ */ #include "Probe.h" static Word Ports[] = {0x3CD, SEQ_IDX, SEQ_REG}; #define NUMPORTS (sizeof(Ports)/sizeof(Word)) Chip_Descriptor Weitek_Descriptor = { "Weitek", Probe_Weitek, Ports, NUMPORTS, FALSE, FALSE, TRUE, NULL, }; static Byte WeitekEnable(Flag) Byte Flag; { Byte new, old, x; old = rdinx(SEQ_IDX, 0x11); for (x=0; x < 10; x++) { ; } outp(SEQ_REG, old); for (x=0; x < 10; x++) { ; } outp(SEQ_REG, old); for (x=0; x < 10; x++) { ; } new = inp(SEQ_REG); for (x=0; x < 10; x++) { ; } outp(SEQ_REG, (new & 0x9F) | Flag); return(old); } Bool Probe_Weitek(Chipset) int *Chipset; { Bool result = FALSE; Byte old, ver; EnableIOPorts(NUMPORTS, Ports); /* * Disable extensions */ old = WeitekEnable(0x60); if (!testinx(SEQ_IDX, 0x12)) { /* * Enable extensions */ WeitekEnable(0); if (testinx(SEQ_IDX, 0x12)) { if (tstrg(0x3CD, 0xFF)) { result = TRUE; ver = rdinx(SEQ_IDX, 0x07) >> 5; switch (ver) { case 0x00: /* guess */ *Chipset = CHIP_WEIT_5086; break; case 0x01: *Chipset = CHIP_WEIT_5186; break; case 0x02: *Chipset = CHIP_WEIT_5286; break; default: Chip_data = ver; *Chipset = CHIP_WEIT_UNK; break; } } } } wrinx(SEQ_IDX, 0x11, old); DisableIOPorts(NUMPORTS, Ports); return(result); }