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researchv9-SUN3(old)
/*-
* 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.
********************************************************/
#ifndef lint
static char sccsid[] = "%W %G Copyright 1987 Sun Micro";
#endif
/*-
* Copyright (c) 1987 by Sun Microsystems, Inc.
*/
#include "sun.h"
#include "resource.h"
#include <sys/mman.h>
#include <sundev/bw2reg.h>
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;
/*-
*-----------------------------------------------------------------------
* sunBW2SaveScreen --
* Disable the video on the frame buffer to save the screen.
*
* Results:
* None.
*
* Side Effects:
* Video enable state changes.
*
*-----------------------------------------------------------------------
*/
static Bool
sunBW2SaveScreen (pScreen, on)
ScreenPtr pScreen;
Bool on;
{
int state = on;
switch (on) {
case SCREEN_SAVER_FORCER:
SetTimeSinceLastInputEvent();
screenSaved = FALSE;
state = FBVIDEO_ON;
break;
case SCREEN_SAVER_OFF:
screenSaved = FALSE;
state = FBVIDEO_ON;
break;
case SCREEN_SAVER_ON:
default:
screenSaved = TRUE;
state = FBVIDEO_OFF;
break;
}
(void) ioctl(sunFbs[pScreen->myNum].fd, FBIOSVIDEO, &state);
return TRUE;
}
/*-
*-----------------------------------------------------------------------
* sunBW2CloseScreen --
* called to ensure video is enabled when server exits.
*
* Results:
* Screen is unsaved.
*
* Side Effects:
* None
*
*-----------------------------------------------------------------------
*/
/*ARGSUSED*/
static Bool
sunBW2CloseScreen(i, pScreen)
int i;
ScreenPtr pScreen;
{
return (pScreen->SaveScreen(pScreen, SCREEN_SAVER_OFF));
}
/*-
*-----------------------------------------------------------------------
* sunBW2ResolveColor --
* Resolve an RGB value into some sort of thing we can handle.
* Just looks to see if the intensity of the color is greater than
* 1/2 and sets it to 'white' (all ones) if so and 'black' (all zeroes)
* if not.
*
* Results:
* *pred, *pgreen and *pblue are overwritten with the resolved color.
*
* Side Effects:
* see above.
*
*-----------------------------------------------------------------------
*/
/*ARGSUSED*/
static void
sunBW2ResolveColor(pred, pgreen, pblue, pVisual)
unsigned short *pred;
unsigned short *pgreen;
unsigned short *pblue;
VisualPtr pVisual;
{
/*
* Gets intensity from RGB. If intensity is >= half, pick white, else
* pick black. This may well be more trouble than it's worth.
*/
*pred = *pgreen = *pblue =
(((39L * *pred +
50L * *pgreen +
11L * *pblue) >> 8) >= (((1<<8)-1)*50)) ? ~0 : 0;
}
/*-
*-----------------------------------------------------------------------
* sunBW2CreateColormap --
* create a bw colormap
*
* Results:
* None
*
* Side Effects:
* allocate two pixels
*
*-----------------------------------------------------------------------
*/
void
sunBW2CreateColormap(pmap)
ColormapPtr pmap;
{
int red, green, blue, pix;
/* this is a monochrome colormap, it only has two entries, just fill
* them in by hand. If it were a more complex static map, it would be
* worth writing a for loop or three to initialize it */
/* this will be pixel 0 */
red = green = blue = ~0;
AllocColor(pmap, &red, &green, &blue, &pix, 0);
/* this will be pixel 1 */
red = green = blue = 0;
AllocColor(pmap, &red, &green, &blue, &pix, 0);
}
/*-
*-----------------------------------------------------------------------
* sunBW2DestroyColormap --
* destroy a bw colormap
*
* Results:
* None
*
* Side Effects:
* None
*
*-----------------------------------------------------------------------
*/
/*ARGSUSED*/
void
sunBW2DestroyColormap(pmap)
ColormapPtr pmap;
{
}
/*-
*-----------------------------------------------------------------------
* 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! */
{
ColormapPtr pColormap;
if (!mfbScreenInit(index, pScreen,
sunFbs[index].fb,
sunFbs[index].info.fb_width,
sunFbs[index].info.fb_height, 90, 90))
return (FALSE);
pScreen->SaveScreen = sunBW2SaveScreen;
pScreen->RealizeCursor = sunRealizeCursor;
pScreen->UnrealizeCursor = sunUnrealizeCursor;
pScreen->DisplayCursor = sunDisplayCursor;
pScreen->SetCursorPosition = sunSetCursorPosition;
pScreen->CursorLimits = sunCursorLimits;
pScreen->PointerNonInterestBox = sunPointerNonInterestBox;
pScreen->ConstrainCursor = sunConstrainCursor;
pScreen->RecolorCursor = sunRecolorCursor;
pScreen->ResolveColor = sunBW2ResolveColor;
pScreen->CreateColormap = sunBW2CreateColormap;
pScreen->DestroyColormap = sunBW2DestroyColormap;
pScreen->RegionCreate = miRegionCreate;
pScreen->RegionCopy = miRegionCopy;
pScreen->RegionDestroy = miRegionDestroy;
pScreen->Intersect = miIntersect;
pScreen->Inverse = miInverse;
pScreen->Union = miUnion;
pScreen->Subtract = miSubtract;
pScreen->RegionReset = miRegionReset;
pScreen->TranslateRegion = miTranslateRegion;
pScreen->RectIn = miRectIn;
pScreen->PointInRegion = miPointInRegion;
pScreen->whitePixel = 0;
pScreen->blackPixel = 1;
/*
* ZOIDS should only ever be defined if SUN_WINDOWS is also defined.
*/
#ifdef ZOIDS
{
GCPtr pGC = CreateScratchGC(pScreen, 1);
if (pGC) {
RegisterProc("PolySolidXAlignedTrapezoid", pGC,
sunBW2SolidXZoids);
RegisterProc("PolySolidYAlignedTrapezoid", pGC,
sunBW2SolidYZoids);
RegisterProc("PolyTiledXAlignedTrapezoid", pGC,
sunBW2TiledXZoids);
RegisterProc("PolyTiledYAlignedTrapezoid", pGC,
sunBW2TiledYZoids);
RegisterProc("PolyStipXAlignedTrapezoid", pGC,
sunBW2StipXZoids);
RegisterProc("PolyStipYAlignedTrapezoid", pGC,
sunBW2StipYZoids);
FreeScratchGC(pGC);
}
}
#endif ZOIDS
if (CreateColormap(pScreen->defColormap, pScreen,
LookupID(pScreen->rootVisual, RT_VISUALID, RC_CORE),
&pColormap, AllocNone, 0) != Success
|| pColormap == NULL)
FatalError("Can't create colormap in sunBW2Init()\n");
mfbInstallColormap(pColormap);
/*
* Enable video output...?
*/
(void) sunBW2SaveScreen(pScreen, SCREEN_SAVER_FORCER);
sunScreenInit(pScreen);
return (TRUE);
}
/*-
*-----------------------------------------------------------------------
* 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.
*
*-----------------------------------------------------------------------
*/
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 i, oldNumScreens;
if (sunFbData[fbNum].probeStatus == probedAndFailed) {
return FALSE;
}
if (sunFbData[fbNum].probeStatus == neverProbed) {
int fd;
struct fbtype fbType;
BW2Ptr BW2fb = NULL; /* Place to map the thing */
BW2HRPtr BW2HRfb = NULL; /* Place to map the thing */
int isHiRes = 0;
if ((fd = sunOpenFrameBuffer(FBTYPE_SUN2BW, &fbType, index, fbNum,
argc, argv)) < 0) {
sunFbData[fbNum].probeStatus = probedAndFailed;
return FALSE;
}
isHiRes = (fbType.fb_width > 1152);
#ifdef _MAP_NEW
if (isHiRes) {
BW2HRfb = (BW2HRPtr) mmap((caddr_t) 0, sizeof(BW2HRRec),
PROT_READ | PROT_WRITE,
MAP_SHARED | _MAP_NEW,
fd, (off_t) 0);
if ((int)BW2HRfb == -1) {
Error("mapping BW2 (hires)");
sunFbData[fbNum].probeStatus = probedAndFailed;
(void) close(fd);
return FALSE;
}
}
else {
BW2fb = (BW2Ptr) mmap((caddr_t) 0, sizeof(BW2Rec),
PROT_READ | PROT_WRITE,
MAP_SHARED | _MAP_NEW,
fd, (off_t) 0);
if ((int)BW2fb == -1) {
Error("mapping BW2");
sunFbData[fbNum].probeStatus = probedAndFailed;
(void) close(fd);
return FALSE;
}
}
#else
if (isHiRes) {
BW2HRfb = (BW2HRPtr) valloc(sizeof(BW2HRRec));
}
else {
BW2fb = (BW2Ptr) valloc(sizeof(BW2Rec));
}
if ((BW2fb == (BW2Ptr) NULL) && (BW2HRfb == (BW2HRPtr) NULL)) {
ErrorF("Could not allocate room for frame buffer.\n");
sunFbData[fbNum].probeStatus = probedAndFailed;
(void) close(fd);
return FALSE;
}
if (mmap((isHiRes ? (pointer) BW2HRfb : (pointer) BW2fb),
(isHiRes ? sizeof(BW2HRRec) : sizeof(BW2Rec)),
PROT_READ | PROT_WRITE, MAP_SHARED,
fd, (off_t) 0) < 0) {
ErrorF("Mapping bw2");
sunFbData[fbNum].probeStatus = probedAndFailed;
(void) close(fd);
return FALSE;
}
#endif _MAP_NEW
/*
* ZOIDS should only ever be defined if SUN_WINDOWS is also
* defined.
*/
#ifdef ZOIDS
if ((sunFbData[fbNum].pr = pr_open(sunFbData[fbNum].devName)) == 0) {
ErrorF("Opening bw2 pixrect");
sunFbData[fbNum].probeStatus = probedAndFailed;
/* do we need to free BW2fb or BW2HRfb? */
(void) close(fd);
return FALSE;
}
if ((sunFbData[fbNum].scratch_pr = mem_create(
fbType.fb_width, fbType.fb_height, 1)) == 0) {
ErrorF("Opening bw2 scratch pixrect");
sunFbData[fbNum].probeStatus = probedAndFailed;
/* do we need to free BW2fb or BW2HRfb? */
pr_destroy(sunFbData[fbNum].pr);
(void) close(fd);
return FALSE;
}
#endif ZOIDS
sunFbs[index].fb = (isHiRes ? (pointer) BW2HRfb : (pointer) BW2fb);
sunFbs[index].fd = fd;
sunFbs[index].info = fbType;
sunFbs[index].EnterLeave = NoopDDA;
sunFbData[fbNum].probeStatus = probedAndSucceeded;
}
/*
* If we've ever successfully probed this device, do the following.
*/
oldNumScreens = pScreenInfo->numScreens;
i = AddScreen(sunBW2Init, argc, argv);
pScreenInfo->screen[index].CloseScreen = sunBW2CloseScreen;
return (i > oldNumScreens);
}
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