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- /*-
- * sunCG6C.c --
- * Functions to support the sun CG6 board as a memory frame buffer.
- */
-
- /****************************************************************/
- /* Modified from sunCG4C.c for X11R3 by Tom Jarmolowski */
- /****************************************************************/
-
- /************************************************************
- 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.
-
- ********************************************************/
-
- #include "sun.h"
-
- #ifdef FBTYPE_SUNFAST_COLOR
- #include <sys/mman.h>
- #include <pixrect/memreg.h>
- #include "colormap.h"
- #include "colormapst.h"
- #include "resource.h"
- #include <cfb.h>
- #include <struct.h>
-
- #define CG6_VBASE 0x70000000
-
- #define CG6_IMAGE(fb) ((caddr_t)(&(fb)->cpixel))
- #define CG6_IMAGEOFF ((off_t)0x16000)
- #define CG6_GXOFF ((off_t)0)
-
- /*-
- *-----------------------------------------------------------------------
- * sunCG6Init --
- * Attempt to find and initialize a cg6 framebuffer
- *
- * Results:
- * TRUE if everything went ok. FALSE if not.
- *
- * Side Effects:
- * Most of the elements of the ScreenRec are filled in. Memory is
- * allocated for the frame buffer and the buffer is mapped. The
- * video is enabled for the frame buffer...
- *
- *-----------------------------------------------------------------------
- */
- /*ARGSUSED*/
- static Bool
- sunCG6CInit (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! */
- {
- int i;
- char *pbits;
- int w, h;
-
- pbits = (char *) (sunFbs[index].fb + CG6_IMAGEOFF);
- w = sunFbs[index].info.fb_width;
- h = sunFbs[index].info.fb_height;
- if (!cfbSetupScreen (pScreen, pbits, w, h,
- monitorResolution, monitorResolution, w))
- return FALSE;
-
- #ifdef sparc
- if (!sunGXInit (pScreen, &sunFbs[index]))
- return FALSE;
- #endif
-
- if (!cfbFinishScreenInit(pScreen, pbits, w, h,
- monitorResolution, monitorResolution, w))
- return FALSE;
-
- if (!sunScreenAllocate (pScreen))
- return FALSE;
-
- sunCGScreenInit (pScreen);
-
- if (!sunScreenInit (pScreen))
- return FALSE;
-
- sunSaveScreen (pScreen, SCREEN_SAVER_OFF);
-
- return cfbCreateDefColormap(pScreen);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * sunCG6Probe --
- * Attempt to find and initialize a cg6 framebuffer
- *
- * Results:
- * TRUE if everything went ok. FALSE if not.
- *
- * Side Effects:
- * Memory is allocated for the frame buffer and the buffer is mapped.
- *
- *-----------------------------------------------------------------------
- */
- Bool
- sunCG6CProbe (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;
- int imagelen;
- caddr_t mapaddr;
- caddr_t addr;
-
- if ((fd = sunOpenFrameBuffer(FBTYPE_SUNFAST_COLOR, &fbType, index, fbNum,
- argc, argv)) < 0)
- return FALSE;
-
- pagemask = getpagesize() - 1;
- imagelen = CG6_IMAGEOFF + fbType.fb_width * fbType.fb_height;
- mapsize = (imagelen + pagemask) & ~pagemask;
- addr = 0;
-
- #ifndef _MAP_NEW
- addr = (caddr_t) valloc(mapsize);
- if (addr == (caddr_t) NULL) {
- ErrorF("Could not allocate room for frame buffer.\n");
- (void) close (fd);
- return FALSE;
- }
- #endif _MAP_NEW
-
- /*
- * Should always try to MAP_PRIVATE first. We want to have a private
- * copy of the registers on context switching if possible.
- */
- mapaddr = (caddr_t) mmap((caddr_t) addr,
- mapsize,
- PROT_READ | PROT_WRITE,
- MAP_PRIVATE, fd, CG6_VBASE);
-
- if (mapaddr == (caddr_t) -1)
- {
- mapaddr = (caddr_t) mmap((caddr_t) addr,
- mapsize,
- PROT_READ | PROT_WRITE,
- MAP_SHARED, fd, CG6_VBASE);
- }
-
- if (mapaddr == (caddr_t) -1) {
- Error("Mapping cg6c");
- (void) close(fd);
- return FALSE;
- }
-
- if (mapaddr == 0)
- mapaddr = addr;
-
- sunFbs[index].fd = fd;
- sunFbs[index].info = fbType;
- sunFbs[index].fb = (pointer) mapaddr;
- sunSupportsDepth8 = TRUE;
- return TRUE;
- }
-
- Bool
- sunCG6CCreate(pScreenInfo, argc, argv)
- ScreenInfo *pScreenInfo;
- int argc;
- char **argv;
- {
- int i;
-
- i = AddScreen(sunCG6CInit, argc, argv);
- if (i >= 0)
- return TRUE;
- return FALSE;
- }
- #endif /* FBTYPE_SUNFAST_COLOR */
-