547 lines
13 KiB
C
547 lines
13 KiB
C
/* $NetBSD: fb.c,v 1.23 2005/12/11 12:23:56 christos 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. 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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: fb.c,v 1.23 2005/12/11 12:23:56 christos Exp $");
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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 <sys/malloc.h>
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#include <sys/types.h>
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#include <machine/promlib.h>
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#include <machine/autoconf.h>
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#include <machine/kbd.h>
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#include <machine/eeprom.h>
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#include <sparc/dev/cons.h>
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#include <dev/sun/fbio.h>
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#include <dev/sun/fbvar.h>
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#include "kbd.h"
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#include "pfour.h"
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struct fbdevlist {
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struct fbdevice *fb_dev;
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struct fbdevlist *fb_next;
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};
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static struct fbdevlist fblist = {
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NULL,
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NULL,
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};
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dev_type_open(fbopen);
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dev_type_close(fbclose);
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dev_type_ioctl(fbioctl);
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dev_type_poll(fbpoll);
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dev_type_mmap(fbmmap);
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dev_type_kqfilter(fbkqfilter);
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const struct cdevsw fb_cdevsw = {
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fbopen, fbclose, noread, nowrite, fbioctl,
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nostop, notty, fbpoll, fbmmap, fbkqfilter,
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};
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void
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fb_unblank()
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{
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struct fbdevlist *fbl = &fblist;
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while (fbl != NULL && fbl->fb_dev != NULL) {
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(*fbl->fb_dev->fb_driver->fbd_unblank)(fbl->fb_dev->fb_device);
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fbl = fbl->fb_next;
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}
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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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#if !defined(SUN4U)
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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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* First, check if prom_stdout() represents a frame buffer,
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* then match on the `fb' property on the root node, if any.
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*/
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if (prom_stdout() != PROMDEV_SCREEN)
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return (0);
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fbnode = prom_getpropint(findroot(), "fb", 0);
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return (fbnode == 0 || 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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#else
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return (node == prom_stdout_node);
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#endif
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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 seen_force = 0;
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int nfb = 0;
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struct fbdevlist *fbl = &fblist;
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/*
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* Check to see if we're being forced into /dev/fb0, or if we're
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* the console. If we are, then move/replace the current fb0.
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*/
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if ((fb->fb_flags & FB_FORCE || (isconsole && !seen_force)) &&
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fblist.fb_dev != NULL) {
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while (fbl->fb_next != NULL) {
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fbl = fbl->fb_next;
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nfb++;
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}
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if ((fbl->fb_next = malloc(sizeof (struct fbdevlist),
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M_DEVBUF, M_NOWAIT)) == NULL)
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printf("%s: replacing %s at /dev/fb0\n",
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fb->fb_device->dv_xname,
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fblist.fb_dev->fb_device->dv_xname);
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else {
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fbl = fbl->fb_next;
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nfb++;
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fbl->fb_dev = fblist.fb_dev;
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fbl->fb_next = NULL;
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printf("%s: moved to /dev/fb%d\n",
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fbl->fb_dev->fb_device->dv_xname, nfb);
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printf("%s: attached to /dev/fb0\n",
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fb->fb_device->dv_xname);
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}
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fblist.fb_dev = fb;
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if (fb->fb_flags & FB_FORCE)
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seen_force = 1;
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/* Add to end of fb list. */
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} else {
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if (fblist.fb_dev != NULL) {
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while (fbl->fb_next != NULL) {
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fbl = fbl->fb_next;
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nfb++;
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}
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if ((fbl->fb_next = malloc(sizeof (struct fbdevlist),
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M_DEVBUF, M_NOWAIT)) == NULL) {
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printf("%s: no space to attach after /dev/fb%d\n",
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fb->fb_device->dv_xname, nfb);
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return;
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}
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fbl = fbl->fb_next;
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nfb++;
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}
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fbl->fb_dev = fb;
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fbl->fb_next = NULL;
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printf("%s: attached to /dev/fb%d\n",
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fbl->fb_dev->fb_device->dv_xname, nfb);
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}
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}
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int
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fbopen(dev, flags, mode, l)
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dev_t dev;
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int flags, mode;
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struct lwp *l;
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{
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int unit, nunit;
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struct fbdevlist *fbl = &fblist;
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unit = minor(dev);
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while (unit-- && fbl != NULL)
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fbl = fbl->fb_next;
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if (fbl == NULL || fbl->fb_dev == NULL)
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return (ENXIO);
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nunit = fbl->fb_dev->fb_device->dv_unit;
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return (fbl->fb_dev->fb_driver->fbd_open)(makedev(0, nunit), flags,
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mode, l);
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}
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int
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fbclose(dev, flags, mode, l)
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dev_t dev;
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int flags, mode;
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struct lwp *l;
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{
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int unit, nunit;
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struct fbdevlist *fbl = &fblist;
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unit = minor(dev);
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while (unit-- && fbl != NULL)
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fbl = fbl->fb_next;
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if (fbl == NULL || fbl->fb_dev == NULL)
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return (ENXIO);
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nunit = fbl->fb_dev->fb_device->dv_unit;
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return (fbl->fb_dev->fb_driver->fbd_close)(makedev(0, nunit), flags,
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mode, l);
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}
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int
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fbioctl(dev, cmd, data, flags, l)
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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 lwp *l;
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{
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int unit, nunit;
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struct fbdevlist *fbl = &fblist;
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unit = minor(dev);
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while (unit-- && fbl != NULL)
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fbl = fbl->fb_next;
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if (fbl == NULL || fbl->fb_dev == NULL)
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return (ENXIO);
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nunit = fbl->fb_dev->fb_device->dv_unit;
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return (fbl->fb_dev->fb_driver->fbd_ioctl)(makedev(0, nunit), cmd,
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data, flags, l);
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}
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int
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fbpoll(dev, events, l)
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dev_t dev;
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int events;
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struct lwp *l;
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{
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int unit, nunit;
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struct fbdevlist *fbl = &fblist;
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unit = minor(dev);
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while (unit-- && fbl != NULL)
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fbl = fbl->fb_next;
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if (fbl == NULL || fbl->fb_dev == NULL)
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return (ENXIO);
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nunit = fbl->fb_dev->fb_device->dv_unit;
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return (fbl->fb_dev->fb_driver->fbd_poll)(makedev(0, nunit), events,
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l);
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}
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int
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fbkqfilter(dev, kn)
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dev_t dev;
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struct knote *kn;
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{
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int unit, nunit;
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struct fbdevlist *fbl = &fblist;
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unit = minor(dev);
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while (unit-- && fbl != NULL)
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fbl = fbl->fb_next;
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if (fbl == NULL || fbl->fb_dev == NULL)
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return (ENXIO);
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nunit = fbl->fb_dev->fb_device->dv_unit;
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return (fbl->fb_dev->fb_driver->fbd_kqfilter)(makedev(0, nunit), kn);
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}
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paddr_t
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fbmmap(dev, off, prot)
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dev_t dev;
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off_t off;
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int prot;
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{
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int unit, nunit;
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struct fbdevlist *fbl = &fblist;
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unit = minor(dev);
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while (unit-- && fbl != NULL)
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fbl = fbl->fb_next;
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if (fbl == NULL || fbl->fb_dev == NULL)
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return (ENXIO);
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nunit = fbl->fb_dev->fb_device->dv_unit;
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paddr_t (*map)(dev_t, off_t, int) = fbl->fb_dev->fb_driver->fbd_mmap;
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if (map == NULL)
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return (-1);
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return (map(makedev(0, nunit), 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 = prom_getpropint(node, "width", def_width);
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fb->fb_type.fb_height = prom_getpropint(node, "height", def_height);
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fb->fb_linebytes = prom_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(SUN4U)
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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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#if NPFOUR > 0
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fb_setsize_pfour(fb);
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#endif
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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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fb->fb_linebytes = (fb->fb_type.fb_width * depth) / 8;
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#endif /* !SUN4U */
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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(int);
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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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#if NKBD > 0
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kbd_bell(on);
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#endif
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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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#if !defined(RASTERCONS_FULLSCREEN)
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int *row, *col;
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#endif
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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(SUN4U)
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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 /* !SUN4U */
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if (!CPU_ISSUN4) {
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char buf[6+1]; /* Enough for six digits */
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maxcol = (prom_getoption("screen-#columns", buf, sizeof buf) == 0)
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? strtoul(buf, NULL, 10)
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: 80;
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maxrow = (prom_getoption("screen-#rows", buf, sizeof buf) != 0)
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? strtoul(buf, NULL, 10)
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: 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_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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if (ri->ri_depth == 8) {
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int i;
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for (i = 0; i < 16; i++) {
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/*
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* Cmap entries are repeated four times in the
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* 32 bit wide `devcmap' entries for optimization
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* purposes; see rasops(9)
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*/
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#define I_TO_DEVCMAP(i) ((i) | ((i)<<8) | ((i)<<16) | ((i)<<24))
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/*
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* Use existing colormap entries for black and white
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*/
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if ((i & 7) == WSCOL_BLACK) {
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ri->ri_devcmap[i] = I_TO_DEVCMAP(255);
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continue;
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}
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if ((i & 7) == WSCOL_WHITE) {
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ri->ri_devcmap[i] = I_TO_DEVCMAP(0);
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continue;
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}
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/*
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* Other entries refer to ANSI map, which for now
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* is setup in bt_subr.c
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*/
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ri->ri_devcmap[i] = I_TO_DEVCMAP(i + 1);
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#undef I_TO_DEVCMAP
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}
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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;
|
|
rc->rc_width = ri->ri_emuwidth;
|
|
rc->rc_height = ri->ri_emuheight;
|
|
rc->rc_deffgcolor = WSCOL_BLACK;
|
|
rc->rc_defbgcolor = WSCOL_WHITE;
|
|
rcons_init(rc, 0);
|
|
|
|
/* Hook up virtual console */
|
|
v_putc = rcons_cnputc;
|
|
}
|
|
|
|
int
|
|
fbrcons_rows()
|
|
{
|
|
return ((fblist.fb_dev != NULL) ?
|
|
fblist.fb_dev->fb_rcons.rc_maxrow : 0);
|
|
}
|
|
|
|
int
|
|
fbrcons_cols()
|
|
{
|
|
return ((fblist.fb_dev != NULL) ?
|
|
fblist.fb_dev->fb_rcons.rc_maxcol : 0);
|
|
}
|
|
#endif /* RASTERCONSOLE */
|