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/* $XConsortium: sunAmScreen.c,v 1.1 94/04/01 17:55:13 dpw Exp $ */
/*
* Copyright 1993 Vrije Universiteit, The Netherlands
*
* 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 and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the Vrije Universiteit not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. The Vrije Universiteit makes no
* representations about the suitability of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*
* THE VRIJE UNIVERSITEIT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE VRIJE UNIVERSITEIT BE LIABLE 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.
*/
/*
* This is the code that Amoeba uses to probe and map in a sun bitmap display.
*/
#include "sun.h"
#include "amoeba.h"
#include "cmdreg.h"
#include "stderr.h"
#include "ampolicy.h"
#include "proc.h"
#include "server/iop/iop.h"
bufptr
sunMapAmoebaScreen(cap, nbytes)
capability *cap;
int nbytes;
{
static char *addr;
segid seg;
char *findhole();
if (addr) return addr;
/* First find a place to map in the segment: */
addr = findhole(nbytes);
seg = seg_map(cap, addr, nbytes, MAP_TYPEDATA|MAP_READWRITE|MAP_INPLACE);
if (seg < 0) {
ErrorF("Xsun: map_segment(bitmap) %x %x: %s\n",
addr, nbytes, err_why(ERR_CONVERT(seg)));
return NULL;
}
return addr;
}
extern capability iopcap;
int
sunAmoebaScreen(screen, name, depth)
IOPFrameBufferInfo *screen;
char *name; /* The name of the device we want to find */
unsigned short depth; /* framebuffer depth we expect to find */
{
errstat err;
if ((err = iop_framebufferinfo(&iopcap, screen)) != STD_OK) {
ErrorF("Xsun: get frame buffer info failed: %s\n", err_why(err));
return 0;
}
if (screen->xmm <= 0 || screen->ymm <= 0) {
ErrorF("X or Y dimensions of screen <= 0\n");
return 0;
}
if (screen->depth != depth ||
strncmp(name, screen->name, IOPNAMELEN) != 0) {
return 0;
}
/* printf("Screen information: width %d, height %d, stride %d\n",
screen->width, screen->height, screen->stride); */
return 1;
}
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