188 lines
4.8 KiB
C
188 lines
4.8 KiB
C
/* $NetBSD: fb.c,v 1.8 1995/10/02 21:48:21 pk Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)fb.c 8.1 (Berkeley) 6/11/93
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*/
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/*
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* /dev/fb (indirect frame buffer driver). This is gross; we should
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* just build cdevsw[] dynamically.
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*/
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <machine/fbio.h>
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#include <machine/fbvar.h>
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static struct fbdevice *devfb;
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void
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fb_unblank()
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{
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if (devfb)
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(*devfb->fb_driver->fbd_unblank)(devfb->fb_device);
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}
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void
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fb_attach(fb)
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struct fbdevice *fb;
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{
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if (devfb) panic("multiple /dev/fb declarers");
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devfb = fb;
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}
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int
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fbopen(dev, flags, mode, p)
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dev_t dev;
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int flags, mode;
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struct proc *p;
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{
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if (devfb == NULL)
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return (ENXIO);
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return (devfb->fb_driver->fbd_open)(dev, flags, mode, p);
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}
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int
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fbclose(dev, flags, mode, p)
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dev_t dev;
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int flags, mode;
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struct proc *p;
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{
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return (devfb->fb_driver->fbd_close)(dev, flags, mode, p);
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}
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int
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fbioctl(dev, cmd, data, flags, p)
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dev_t dev;
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u_long cmd;
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caddr_t data;
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int flags;
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struct proc *p;
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{
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return (devfb->fb_driver->fbd_ioctl)(dev, cmd, data, flags, p);
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}
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int
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fbmmap(dev, off, prot)
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dev_t dev;
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int off, prot;
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{
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int (*map)__P((dev_t, int, int)) = devfb->fb_driver->fbd_mmap;
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if (map == NULL)
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return (-1);
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return (map(dev, off, prot));
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}
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#ifdef RCONSOLE
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#include <machine/autoconf.h>
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#include <machine/kbd.h>
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extern int (*v_putc) __P((int));
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static int
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a2int(cp, deflt)
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register char *cp;
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register int deflt;
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{
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register int i = 0;
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if (*cp == '\0')
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return (deflt);
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while (*cp != '\0')
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i = i * 10 + *cp++ - '0';
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return (i);
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}
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static void
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fb_bell(on)
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int on;
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{
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(void)kbd_docmd(on?KBD_CMD_BELL:KBD_CMD_NOBELL, 0);
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}
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void
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fbrcons_init(fb)
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struct fbdevice *fb;
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{
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/*
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* Common glue for rconsole initialization
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* XXX - mostly duplicates values with fbdevice.
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*/
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fb->fb_rcons.rc_linebytes = fb->fb_linebytes;
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fb->fb_rcons.rc_pixels = fb->fb_pixels;
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fb->fb_rcons.rc_width = fb->fb_type.fb_width;
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fb->fb_rcons.rc_height = fb->fb_type.fb_height;
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fb->fb_rcons.rc_depth = fb->fb_type.fb_depth;
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if (cputyp == CPU_SUN4) {
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fb->fb_rcons.rc_maxcol = 80;
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fb->fb_rcons.rc_maxrow = 34;
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} else {
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fb->fb_rcons.rc_maxcol =
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a2int(getpropstring(optionsnode, "screen-#columns"), 80);
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fb->fb_rcons.rc_maxrow =
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a2int(getpropstring(optionsnode, "screen-#rows"), 34);
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}
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/* Determine addresses of prom emulator row and column */
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if (cputyp == CPU_SUN4 ||
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romgetcursoraddr(&fb->fb_rcons.rc_row, &fb->fb_rcons.rc_col))
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fb->fb_rcons.rc_row = fb->fb_rcons.rc_col = NULL;
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fb->fb_rcons.rc_bell = fb_bell;
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rcons_init(&fb->fb_rcons);
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/* Hook up virtual console */
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v_putc = (int (*) __P((int)))rcons_cnputc;
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}
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#endif
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