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132 lines
5.0 KiB
C
132 lines
5.0 KiB
C
/* $NetBSD: x68kText.c,v 1.3 2011/05/20 05:12:42 tsutsui Exp $ */
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/*-------------------------------------------------------------------------
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* Copyright (c) 1996 Yasushi Yamasaki
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Yasushi Yamasaki
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*-----------------------------------------------------------------------*/
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#include "x68k.h"
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#include <mfb.h>
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/* in x68kConfig.c */
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X68kScreenRec *x68kGetScreenRecByType(int type);
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/* in x68kFb.c */
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Bool x68kSaveScreen(ScreenPtr pScreen, Bool on);
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/*-------------------------------------------------------------------------
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* function "x68kTextOpen" [ X68kFBProc function ]
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*
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* purpose: call common frame buffer opening procedure
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* and enable TVRAM simultaneous access mode
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* argument: (X68kScreenRec *)pPriv : X68k private screen record
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* returns: (Bool): TRUE if succeeded
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* FALSE otherwise
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*-----------------------------------------------------------------------*/
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static u_short r21;
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static u_short tpal0;
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static u_short tpal15;
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Bool x68kTextOpen(X68kScreenRec *pPriv)
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{
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if( !x68kFbCommonOpen(pPriv, "/dev/grf0") )
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return FALSE;
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/* enable TVRAM simultaneous access mode */
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r21 = pPriv->reg->crtc.r21;
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pPriv->reg->crtc.r21 = 0x01f0;
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/* initialize scroll registers */
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pPriv->reg->crtc.r10 = pPriv->reg->crtc.r11 = 0;
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tpal0 = pPriv->reg->tpal[0];
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tpal15 = pPriv->reg->tpal[15];
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pPriv->reg->tpal[0] = 0;
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pPriv->reg->tpal[15] = 0xFFFE;
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return TRUE;
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}
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/*-------------------------------------------------------------------------
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* function "x68kTextClose" [ X68kFBProc function ]
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*
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* purpose: close text frame buffer
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* argument: nothing
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* returns: nothing
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*-----------------------------------------------------------------------*/
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void x68kTextClose(X68kScreenRec *pPriv)
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{
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pPriv->reg->crtc.r21 = r21; /* recover TVRAM mode */
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pPriv->reg->tpal[0] = tpal0;
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pPriv->reg->tpal[15] = tpal15;
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x68kFbCommonClose(pPriv);
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}
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/*-------------------------------------------------------------------------
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* function "x68kTextInit" [ called by DIX AddScreen ]
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*
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* purpose: initialize text frame buffer
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* argument: (int)screen : screen index
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* (ScreenPtr)pScreen : DIX screen record
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* (int)argc, (char **)argv : standard C arguments
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* returns: (Bool) TRUE if succeeded
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* FALSE otherwise
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*-----------------------------------------------------------------------*/
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Bool x68kTextInit(int screen, ScreenPtr pScreen, int argc, char *argv[])
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{
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X68kScreenRec *pPriv;
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/* get private screen record set by X68KConfig */
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pPriv = x68kGetScreenRecByType(X68K_FB_TEXT);
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if ( x68kGeneration != serverGeneration ) {
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if ( (x68kScreenIndex = AllocateScreenPrivateIndex()) < 0 ) {
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Error("AllocateScreenPrivateIndex failed" );
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return FALSE;
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}
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x68kGeneration = serverGeneration;
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}
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pScreen->devPrivates[x68kScreenIndex].ptr = (pointer)pPriv;
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if ( !mfbScreenInit(pScreen, pPriv->fb,
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pPriv->scr_width, pPriv->scr_height,
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pPriv->dpi, pPriv->dpi, pPriv->fb_width) )
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return FALSE;
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pScreen->whitePixel = 1;
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pScreen->blackPixel = 0;
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if ( !miDCInitialize(pScreen, &x68kPointerScreenFuncs) )
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return FALSE;
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if ( !mfbCreateDefColormap(pScreen) )
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return FALSE;
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pScreen->SaveScreen = x68kSaveScreen;
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return TRUE;
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}
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/* EOF x68kText.c */
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