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- /*-
- * sunCG3C.c --
- * Functions to support the sun CG3 board as a memory frame buffer.
- */
-
- /************************************************************
- 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"
-
- #include <sys/mman.h>
- #include <pixrect/memreg.h>
- /*
- #include <sundev/cg4reg.h>
- */
- #include "colormap.h"
- #include "colormapst.h"
- #include "resource.h"
- #include <struct.h>
-
- /*-
- * The cg3 frame buffer is divided into several pieces.
- * 1) an array of 8-bit pixels
- * 2) a one-bit deep overlay plane
- * 3) an enable plane
- * 4) a colormap and status register
- *
- * XXX - put the cursor in the overlay plane
- */
-
- #define CG3A_HEIGHT 900
- #define CG3A_WIDTH 1152
- #define CG3B_HEIGHT 768
- #define CG3B_WIDTH 1024
-
- typedef struct cg3ac {
- #ifdef sparc
- u_char mpixel[128*1024]; /* bit-per-pixel memory */
- u_char epixel[128*1024]; /* enable plane */
- #endif
- u_char cpixel[CG3A_HEIGHT][CG3A_WIDTH]; /* byte-per-pixel memory */
- } CG3AC, CG3ACRec, *CG3ACPtr;
-
- typedef struct cg3bc {
- #ifdef sparc
- u_char mpixel[128*1024]; /* bit-per-pixel memory */
- u_char epixel[128*1024]; /* enable plane */
- #endif
- u_char cpixel[CG3B_HEIGHT][CG3B_WIDTH]; /* byte-per-pixel memory */
- } CG3BC, CG3BCRec, *CG3BCPtr;
-
- #define CG3AC_IMAGE(fb) ((caddr_t)((fb)->cpixel))
- #define CG3AC_IMAGELEN (((sizeof (CG3AC) + 4095)/4096)*4096)
- #define CG3BC_IMAGE(fb) ((caddr_t)((fb)->cpixel))
- #define CG3BC_IMAGELEN (((sizeof (CG3BC) + 4095)/4096)*4096)
-
- /*-
- *-----------------------------------------------------------------------
- * sunCG3CInit --
- * Attempt to find and initialize a cg3 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
- sunCG3CInit (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 (!cfbScreenInit (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))
- return FALSE;
-
- sunCGScreenInit (pScreen);
-
- if (!sunScreenInit (pScreen))
- return FALSE;
-
- sunSaveScreen (pScreen, SCREEN_SAVER_OFF);
-
- return cfbCreateDefColormap(pScreen);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * sunCG3CProbe --
- * Attempt to find and initialize a cg3 framebuffer
- *
- * Results:
- * TRUE if everything went ok. FALSE if not.
- *
- * Side Effects:
- * Memory is allocated for the frame buffer and the buffer is mapped.
- *
- *-----------------------------------------------------------------------
- */
- /*ARGSUSED*/
- Bool
- sunCG3CProbe (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;
- pointer fb;
- CG3ACPtr CG3ACfb;
- CG3BCPtr CG3BCfb;
-
- if ((fd = sunOpenFrameBuffer(FBTYPE_SUN3COLOR, &fbType, index, fbNum,
- argc, argv)) < 0)
- return FALSE;
-
- #ifdef _MAP_NEW
- if (fbType.fb_width == CG3A_WIDTH) {
- if ((int)(CG3ACfb = (CG3ACPtr) mmap((caddr_t) 0,
- CG3AC_IMAGELEN,
- PROT_READ | PROT_WRITE,
- MAP_SHARED | _MAP_NEW, fd, 0)) == -1) {
- Error("Mapping cg3c");
- (void) close(fd);
- return FALSE;
- }
- fb = (pointer) CG3AC_IMAGE(CG3ACfb);
- }
- else if (fbType.fb_width == CG3B_WIDTH) {
- if ((int)(CG3BCfb = (CG3BCPtr) mmap((caddr_t) 0,
- CG3BC_IMAGELEN,
- PROT_READ | PROT_WRITE,
- MAP_SHARED | _MAP_NEW, fd, 0)) == -1) {
- Error("Mapping cg3c");
- (void) close(fd);
- return FALSE;
- }
- fb = (pointer) CG3BC_IMAGE(CG3BCfb);
- }
- else {
- Error("Mapping cg3c");
- (void) close(fd);
- return FALSE;
- }
- #else _MAP_NEW
- if (fbType.fb_width == CG3A_WIDTH) {
- CG3ACfb = (CG3ACPtr) valloc(CG3AC_MONOLEN +
- CG3AC_ENBLEN + CG3AC_IMAGELEN);
- if (CG3ACfb == (CG3ACPtr) NULL) {
- ErrorF("Could not allocate room for frame buffer.\n");
- return FALSE;
- }
-
- if (mmap((caddr_t) CG3ACfb, CG3AC_MONOLEN +
- CG3AC_ENBLEN + CG3AC_IMAGELEN,
- PROT_READ | PROT_WRITE,
- MAP_SHARED, fd, 0) < 0) {
- Error("Mapping cg3c");
- (void) close(fd);
- return FALSE;
- }
- fb = (pointer) CG3AC_IMAGE(CG3ACfb);
- }
- else if (fbType.fb_width == CG3B_WIDTH) {
- CG3BCfb = (CG3BCPtr) valloc(CG3BC_MONOLEN +
- CG3BC_ENBLEN + CG3BC_IMAGELEN);
- if (CG3BCfb == (CG3BCPtr) NULL) {
- ErrorF("Could not allocate room for frame buffer.\n");
- return FALSE;
- }
-
- if (mmap((caddr_t) CG3BCfb, CG3BC_MONOLEN +
- CG3BC_ENBLEN + CG3BC_IMAGELEN,
- PROT_READ | PROT_WRITE,
- MAP_SHARED, fd, 0) < 0) {
- Error("Mapping cg3c");
- (void) close(fd);
- return FALSE;
- }
- fb = (pointer) CG3BC_IMAGE(CG3BCfb);
- }
- else {
- Error("Mapping cg3c");
- (void) close(fd);
- return FALSE;
- }
- #endif _MAP_NEW
-
- sunFbs[index].fd = fd;
- sunFbs[index].info = fbType;
- sunFbs[index].fb = fb;
- sunSupportsDepth8 = TRUE;
- return TRUE;
- }
-
- /*ARGSUSED*/
- Bool
- sunCG3CCreate(pScreenInfo, argc, argv)
- ScreenInfo *pScreenInfo;
- int argc;
- char **argv;
- {
- return (AddScreen(sunCG3CInit, argc, argv) >= 0);
- }
-