/* $XConsortium: sunBW2.c,v 5.13 92/11/20 13:54:24 rws Exp $ */ /*- * sunBW2.c -- * Functions for handling the sun BWTWO board. * * Copyright (c) 1987 by the Regents of the University of California * Copyright (c) 1987 by Adam de Boor, UC Berkeley * * Permission to use, copy, modify, and distribute this * software and its documentation for any purpose and without * fee is hereby granted, provided that the above copyright * notice appear in all copies. The University of California * makes no representations about the suitability of this * software for any purpose. It is provided "as is" without * express or implied warranty. * * */ /************************************************************ Copyright 1987 by Sun Microsystems, Inc. Mountain View, CA. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright no- tice appear in all copies and that both that copyright no- tice and this permission notice appear in supporting docu- mentation, and that the names of Sun or MIT not be used in advertising or publicity pertaining to distribution of the software without specific prior written permission. Sun and M.I.T. make no representations about the suitability of this software for any purpose. It is provided "as is" without any express or implied warranty. SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- NESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SUN BE LI- ABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ********************************************************/ /*- * Copyright (c) 1987 by Sun Microsystems, Inc. */ #include "sun.h" #include "resource.h" #include #ifdef SVR4 #include #include #else #include #endif extern caddr_t mmap(); typedef struct bw2 { u_char image[BW2_FBSIZE]; /* Pixel buffer */ } BW2, BW2Rec, *BW2Ptr; typedef struct bw2hr { u_char image[BW2_FBSIZE_HIRES]; /* Pixel buffer */ } BW2HR, BW2HRRec, *BW2HRPtr; /*- *----------------------------------------------------------------------- * sunBW2Init -- * Attempt to find and initialize a bw2 framebuffer * * Results: * None * * Side Effects: * Most of the elements of the ScreenRec are filled in. The * video is enabled for the frame buffer... * *----------------------------------------------------------------------- */ /*ARGSUSED*/ static Bool sunBW2Init (index, pScreen, argc, argv) int index; /* The index of pScreen in the ScreenInfo */ ScreenPtr pScreen; /* The Screen to initialize */ int argc; /* The number of the Server's arguments. */ char **argv; /* The arguments themselves. Don't change! */ { if (!mfbScreenInit(pScreen, sunFbs[index].fb, sunFbs[index].info.fb_width, sunFbs[index].info.fb_height, monitorResolution, monitorResolution, sunFbs[index].info.fb_width)) return (FALSE); if (!sunScreenAllocate (pScreen) || !sunScreenInit (pScreen)) return FALSE; pScreen->whitePixel = 0; pScreen->blackPixel = 1; /* * Enable video output...? */ (void) sunSaveScreen(pScreen, SCREEN_SAVER_OFF); return mfbCreateDefColormap(pScreen); } /*- *----------------------------------------------------------------------- * sunBW2Probe -- * Attempt to find and initialize a bw2 framebuffer * * Results: * None * * Side Effects: * Memory is allocated for the frame buffer and the buffer is mapped. * *----------------------------------------------------------------------- */ /*ARGSUSED*/ Bool sunBW2Probe(pScreenInfo, index, fbNum, argc, argv) ScreenInfo *pScreenInfo; /* The screenInfo struct */ int index; /* The index of pScreen in the ScreenInfo */ int fbNum; /* Index into the sunFbData array */ int argc; /* The number of the Server's arguments. */ char **argv; /* The arguments themselves. Don't change! */ { int fd; struct fbtype fbType; int pagemask, mapsize; caddr_t addr, mapaddr; if ((fd = sunOpenFrameBuffer(FBTYPE_SUN2BW, &fbType, index, fbNum, argc, argv)) < 0) return FALSE; /* * It's not precisely clear that we have to round up * fb_size to the nearest page boundary but there are * rumors that this is a good idea and that it shouldn't * hurt anything. */ #ifdef SVR4 pagemask = sysconf(_SC_PAGESIZE) - 1; #else pagemask = getpagesize() - 1; #endif mapsize = (fbType.fb_size + pagemask) & ~pagemask; addr = 0; #ifndef _MAP_NEW /* * If we are running pre-SunOS 4.0 then we first need to * allocate some address range for mmap() to replace. */ if ((addr = (caddr_t) valloc(mapsize)) == 0) { ErrorF("Could not allocate room for frame buffer.\n"); (void) close(fd); return FALSE; } #endif /* !_MAP_NEW */ /* * In SunOS 4.0 the standard C library mmap() system call * wrapper will automatically add a _MAP_NEW flag for us. * In pre-4.0 mmap(), success returned 0 but now it returns the * newly mapped starting address. The test for mapaddr * being 0 below will handle this difference correctly. */ if ((mapaddr = (caddr_t) mmap(addr, mapsize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, (off_t)0)) == (caddr_t) -1) { Error("mapping BW2"); (void) close(fd); return FALSE; } if (mapaddr == 0) mapaddr = addr; sunFbs[index].fb = (pointer)mapaddr; sunFbs[index].fd = fd; sunFbs[index].info = fbType; sunFbs[index].EnterLeave = NULL; return TRUE; } Bool sunBW2Create(pScreenInfo, argc, argv) ScreenInfo *pScreenInfo; int argc; char **argv; { return (AddScreen(sunBW2Init, argc, argv) >= 0); }