306 lines
7.2 KiB
C
306 lines
7.2 KiB
C
/* $NetBSD: fb.c,v 1.15 1999/05/23 17:59:39 ad 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/systm.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <sys/conf.h>
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#include <machine/autoconf.h>
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#include <machine/fbio.h>
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#include <machine/kbd.h>
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#include <machine/fbvar.h>
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#include <machine/conf.h>
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#include <machine/eeprom.h>
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#include <sparc64/dev/pfourreg.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, isconsole)
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struct fbdevice *fb;
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int isconsole;
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{
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static int no_replace, seen_force;
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/*
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* We've already had a framebuffer forced into /dev/fb. Don't
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* allow any more, even if this is the console.
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*/
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if (seen_force) {
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if (devfb) { /* sanity */
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printf("%s: /dev/fb already full\n",
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fb->fb_device->dv_xname);
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return;
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} else
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seen_force = 0;
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}
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/*
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* Check to see if we're being forced into /dev/fb.
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*/
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if (fb->fb_flags & FB_FORCE) {
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if (devfb)
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printf("%s: forcefully replacing %s\n",
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fb->fb_device->dv_xname,
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devfb->fb_device->dv_xname);
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devfb = fb;
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seen_force = no_replace = 1;
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goto attached;
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}
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/*
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* Check to see if we're the console. If we are, then replace
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* any currently existing framebuffer.
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*/
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if (isconsole) {
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if (devfb)
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printf("%s: replacing %s\n", fb->fb_device->dv_xname,
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devfb->fb_device->dv_xname);
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devfb = fb;
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no_replace = 1;
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goto attached;
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}
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/*
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* For the final case, we check to see if we can replace an
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* existing framebuffer, if not, say so and return.
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*/
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if (no_replace) {
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if (devfb) { /* sanity */
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printf("%s: /dev/fb already full\n",
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fb->fb_device->dv_xname);
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return;
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} else
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no_replace = 0;
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}
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if (devfb)
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printf("%s: replacing %s\n", fb->fb_device->dv_xname,
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devfb->fb_device->dv_xname);
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devfb = fb;
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attached:
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printf("%s: attached to /dev/fb\n", devfb->fb_device->dv_xname);
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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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fbpoll(dev, events, p)
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dev_t dev;
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int events;
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struct proc *p;
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{
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return (devfb->fb_driver->fbd_poll)(dev, events, 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 (-1LL);
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return (map(dev, off, prot));
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}
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void
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fb_setsize(fb, depth, def_width, def_height, node)
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struct fbdevice *fb;
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int depth, def_width, def_height, node;
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{
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fb->fb_type.fb_width = getpropint(node, "width", def_width);
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fb->fb_type.fb_height = getpropint(node, "height", def_height);
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fb->fb_linebytes = getpropint(node, "linebytes",
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(fb->fb_type.fb_width * depth) / 8);
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}
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#ifdef RASTERCONSOLE
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#include <machine/kbd.h>
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static void fb_bell __P((int));
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#if !defined(RASTERCONS_FULLSCREEN)
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static int a2int __P((char *, 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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#endif
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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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struct rconsole *rc = &fb->fb_rcons;
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struct rasops_info *ri = &fb->fb_rinfo;
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int maxrow, maxcol;
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/* Set up what rasops needs to know about */
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bzero(ri, sizeof *ri);
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ri->ri_stride = fb->fb_linebytes;
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ri->ri_bits = (caddr_t)fb->fb_pixels;
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ri->ri_depth = fb->fb_type.fb_depth;
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ri->ri_width = fb->fb_type.fb_width;
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ri->ri_height = fb->fb_type.fb_height;
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/* These'll be sanity checked by rasops... */
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maxrow = 0;
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maxcol = 0;
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#if !defined(RASTERCONS_FULLSCREEN)
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maxcol = a2int(getpropstring(optionsnode, "screen-#columns"), 80);
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maxrow = a2int(getpropstring(optionsnode, "screen-#rows"), 34);
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#endif /* !RASTERCONS_FULLSCREEN */
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/*
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* XXX until somebody actually sets the colormap after a call to
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* rasops_init() with ri->ri_cmap, we can only do mono..
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*/
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ri->ri_forcemono = 1;
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/* Get operations set and connect to rcons */
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if (rasops_init(ri, maxrow, maxcol, 0, 1))
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panic("fbrcons_init: rasops_init failed!");
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rc->rc_ops = &ri->ri_ops;
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rc->rc_cookie = ri;
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rc->rc_bell = fb_bell;
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rc->rc_maxcol = ri->ri_cols;
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rc->rc_maxrow = ri->ri_rows;
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rc->rc_width = ri->ri_emuwidth;
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rc->rc_height = ri->ri_emuheight;
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rc->rc_row = 0;
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rc->rc_col = 0;
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rcons_init(rc, 0);
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/* Hook up virtual console */
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v_putc = rcons_cnputc;
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}
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int
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fbrcons_rows()
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{
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return (devfb ? devfb->fb_rcons.rc_maxrow : 0);
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}
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int
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fbrcons_cols()
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{
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return (devfb ? devfb->fb_rcons.rc_maxcol : 0);
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}
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#endif /* RASTERCONSOLE */
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