565 lines
13 KiB
C
565 lines
13 KiB
C
/* $NetBSD: fb.c,v 1.43 2000/03/19 13:48:45 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/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 <sparc/dev/pfourreg.h>
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#include <sparc/dev/cons.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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/*
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* Helper function for frame buffer devices. Decides whether
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* the device can be the console output device according to
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* PROM info. The result from this function may not be conclusive
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* on machines with old PROMs; in that case, drivers should consult
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* other sources of configuration information (e.g. EEPROM entries).
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*/
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int
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fb_is_console(node)
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int node;
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{
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int fbnode;
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switch (prom_version()) {
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case PROM_OLDMON:
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/* `node' is not valid; just check for any fb device */
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return (prom_stdout() == PROMDEV_SCREEN);
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case PROM_OBP_V0:
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/*
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* Prefer the `fb' property on the root node.
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* Fall back on prom_stdout() cookie if not present.
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*/
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fbnode = getpropint(findroot(), "fb", 0);
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if (fbnode == 0)
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return (prom_stdout() == PROMDEV_SCREEN);
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else
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return (node == fbnode);
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case PROM_OBP_V2:
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case PROM_OBP_V3:
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case PROM_OPENFIRM:
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/* Just match the nodes */
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return (node == prom_stdout_node);
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}
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return (0);
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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 (-1);
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return (map(dev, off, prot));
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}
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void
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fb_setsize_obp(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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void
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fb_setsize_eeprom(fb, depth, def_width, def_height)
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struct fbdevice *fb;
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int depth, def_width, def_height;
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{
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#if defined(SUN4)
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struct eeprom *eep = (struct eeprom *)eeprom_va;
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if (!CPU_ISSUN4) {
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printf("fb_setsize_eeprom: not sun4\n");
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return;
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}
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/* Set up some defaults. */
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fb->fb_type.fb_width = def_width;
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fb->fb_type.fb_height = def_height;
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if (fb->fb_flags & FB_PFOUR) {
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volatile u_int32_t pfour;
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/*
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* Some pfour framebuffers, e.g. the
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* cgsix, don't encode resolution the
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* same, so the driver handles that.
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* The driver can let us know that it
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* needs to do this by not mapping in
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* the pfour register by the time this
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* routine is called.
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*/
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if (fb->fb_pfour == NULL)
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goto donesize;
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pfour = *fb->fb_pfour;
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/*
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* Use the pfour register to determine
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* the size. Note that the cgsix and
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* cgeight don't use this size encoding.
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* In this case, we have to settle
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* for the defaults we were provided
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* with.
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*/
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if ((PFOUR_ID(pfour) == PFOUR_ID_COLOR24) ||
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(PFOUR_ID(pfour) == PFOUR_ID_FASTCOLOR))
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goto donesize;
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switch (PFOUR_SIZE(pfour)) {
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case PFOUR_SIZE_1152X900:
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fb->fb_type.fb_width = 1152;
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fb->fb_type.fb_height = 900;
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break;
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case PFOUR_SIZE_1024X1024:
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fb->fb_type.fb_width = 1024;
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fb->fb_type.fb_height = 1024;
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break;
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case PFOUR_SIZE_1280X1024:
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fb->fb_type.fb_width = 1280;
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fb->fb_type.fb_height = 1024;
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break;
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case PFOUR_SIZE_1600X1280:
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fb->fb_type.fb_width = 1600;
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fb->fb_type.fb_height = 1280;
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break;
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case PFOUR_SIZE_1440X1440:
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fb->fb_type.fb_width = 1440;
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fb->fb_type.fb_height = 1440;
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break;
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case PFOUR_SIZE_640X480:
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fb->fb_type.fb_width = 640;
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fb->fb_type.fb_height = 480;
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break;
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default:
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/*
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* XXX: Do nothing, I guess.
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* Should we print a warning about
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* an unknown value? --thorpej
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*/
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break;
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}
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} else if (eep != NULL) {
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switch (eep->eeScreenSize) {
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case EE_SCR_1152X900:
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fb->fb_type.fb_width = 1152;
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fb->fb_type.fb_height = 900;
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break;
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case EE_SCR_1024X1024:
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fb->fb_type.fb_width = 1024;
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fb->fb_type.fb_height = 1024;
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break;
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case EE_SCR_1600X1280:
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fb->fb_type.fb_width = 1600;
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fb->fb_type.fb_height = 1280;
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break;
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case EE_SCR_1440X1440:
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fb->fb_type.fb_width = 1440;
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fb->fb_type.fb_height = 1440;
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break;
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default:
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/*
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* XXX: Do nothing, I guess.
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* Should we print a warning about
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* an unknown value? --thorpej
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*/
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break;
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}
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}
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donesize:
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fb->fb_linebytes = (fb->fb_type.fb_width * depth) / 8;
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#endif /* SUN4 */
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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, *row, *col;
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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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maxrow = 5000;
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maxcol = 5000;
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#if !defined(RASTERCONS_FULLSCREEN)
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#if defined(SUN4)
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if (CPU_ISSUN4) {
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struct eeprom *eep = (struct eeprom *)eeprom_va;
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if (eep == NULL) {
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maxcol = 80;
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maxrow = 34;
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} else {
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maxcol = eep->eeTtyCols;
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maxrow = eep->eeTtyRows;
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}
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}
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#endif /* SUN4 */
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if (!CPU_ISSUN4) {
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maxcol =
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a2int(getpropstring(optionsnode, "screen-#columns"), 80);
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maxrow =
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a2int(getpropstring(optionsnode, "screen-#rows"), 34);
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}
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#endif /* !RASTERCONS_FULLSCREEN */
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/*
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* - force monochrome output
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* - eraserows() hack to clear the *entire* display
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* - cursor is currently enabled
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* - center output
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*/
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ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR | RI_CURSOR | RI_CENTER;
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/* Get operations set and connect to rcons */
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if (rasops_init(ri, maxrow, maxcol))
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panic("fbrcons_init: rasops_init failed!");
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/* PROM sets up colormap so black is index 0x00 and white is 0xff */
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if (ri->ri_depth == 8) {
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ri->ri_devcmap[0] = 0x00000000;
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ri->ri_devcmap[1] = 0xffffffff;
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}
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rc->rc_row = rc->rc_col = 0;
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#if !defined(RASTERCONS_FULLSCREEN)
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/* Determine addresses of prom emulator row and column */
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if (!CPU_ISSUN4 && !romgetcursoraddr(&row, &col)) {
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rc->rc_row = *row;
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rc->rc_col = *col;
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}
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#endif
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ri->ri_crow = rc->rc_row;
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ri->ri_ccol = rc->rc_col;
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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_deffgcolor = WSCOL_BLACK;
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rc->rc_defbgcolor = WSCOL_WHITE;
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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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/*
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* Support routines for pfour framebuffers.
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*/
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/*
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* Probe for a pfour framebuffer. Return values:
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*
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* PFOUR_NOTPFOUR framebuffer is not a pfour
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* framebuffer
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*
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* otherwise returns pfour ID
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*/
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int
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fb_pfour_id(va)
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volatile void *va;
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{
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#if defined(SUN4)
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volatile u_int32_t val, save, *pfour = va;
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/* Read the pfour register. */
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save = *pfour;
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/*
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* Try to modify the type code. If it changes, put the
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* original value back, and notify the caller that it's
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* not a pfour framebuffer.
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*/
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val = save & ~PFOUR_REG_RESET;
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*pfour = (val ^ PFOUR_FBTYPE_MASK);
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if ((*pfour ^ val) & PFOUR_FBTYPE_MASK) {
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*pfour = save;
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return (PFOUR_NOTPFOUR);
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}
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return (PFOUR_ID(val));
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#else
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return (PFOUR_NOTPFOUR);
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#endif /* SUN4 */
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}
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/*
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* Return the status of the video enable.
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*/
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int
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fb_pfour_get_video(fb)
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struct fbdevice *fb;
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{
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return ((*fb->fb_pfour & PFOUR_REG_VIDEO) != 0);
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|
}
|
|
|
|
/*
|
|
* Enable or disable the framebuffer.
|
|
*/
|
|
void
|
|
fb_pfour_set_video(fb, enable)
|
|
struct fbdevice *fb;
|
|
int enable;
|
|
{
|
|
volatile u_int32_t pfour;
|
|
|
|
pfour = *fb->fb_pfour & ~(PFOUR_REG_INTCLR|PFOUR_REG_VIDEO);
|
|
*fb->fb_pfour = pfour | (enable ? PFOUR_REG_VIDEO : 0);
|
|
}
|