e0cc03a09b
kqueue provides a stateful and efficient event notification framework currently supported events include socket, file, directory, fifo, pipe, tty and device changes, and monitoring of processes and signals kqueue is supported by all writable filesystems in NetBSD tree (with exception of Coda) and all device drivers supporting poll(2) based on work done by Jonathan Lemon for FreeBSD initial NetBSD port done by Luke Mewburn and Jason Thorpe
296 lines
8.6 KiB
C
296 lines
8.6 KiB
C
/* $NetBSD: bwtwo.c,v 1.6 2002/10/23 09:13:53 jdolecek Exp $ */
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/*-
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* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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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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* @(#)bwtwo.c 8.1 (Berkeley) 6/11/93
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*/
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/*
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* black & white display (bwtwo) driver.
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*
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* Does not handle interrupts, even though they can occur.
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*
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* P4 and overlay plane support by Jason R. Thorpe <thorpej@NetBSD.ORG>.
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* Overlay plane handling hints and ideas provided by Brad Spencer.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: bwtwo.c,v 1.6 2002/10/23 09:13:53 jdolecek 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/ioctl.h>
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#include <sys/malloc.h>
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#include <sys/mman.h>
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#include <sys/tty.h>
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#include <sys/conf.h>
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#include <machine/autoconf.h>
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#include <machine/eeprom.h>
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#include <dev/sun/fbio.h>
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#include <dev/sun/fbvar.h>
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#include <dev/sun/btreg.h>
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#include <dev/sun/bwtworeg.h>
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#include <dev/sun/bwtwovar.h>
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#include <dev/sun/pfourreg.h>
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extern struct cfdriver bwtwo_cd;
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dev_type_open(bwtwoopen);
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dev_type_ioctl(bwtwoioctl);
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dev_type_mmap(bwtwommap);
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const struct cdevsw bwtwo_cdevsw = {
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bwtwoopen, nullclose, noread, nowrite, bwtwoioctl,
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nostop, notty, nopoll, bwtwommap, nokqfilter,
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};
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/* XXX we do not handle frame buffer interrupts (do not know how) */
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static void bwtwounblank(struct device *);
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/* frame buffer generic driver */
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static struct fbdriver bwtwofbdriver = {
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bwtwounblank, bwtwoopen, nullclose, bwtwoioctl, nopoll, bwtwommap,
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nokqfilter
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};
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int
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bwtwo_pfour_probe(vaddr, arg)
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void *vaddr;
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void *arg;
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{
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struct cfdata *cf = arg;
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switch (fb_pfour_id(vaddr)) {
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case PFOUR_ID_BW:
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case PFOUR_ID_COLOR8P1: /* bwtwo in ... */
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case PFOUR_ID_COLOR24: /* ...overlay plane */
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/* This is wrong; should be done in bwtwo_attach() */
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cf->cf_flags |= FB_PFOUR;
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/* FALLTHROUGH */
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case PFOUR_NOTPFOUR:
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return (1);
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}
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return (0);
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}
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void
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bwtwoattach(sc, name, isconsole)
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struct bwtwo_softc *sc;
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char *name;
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int isconsole;
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{
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struct fbdevice *fb = &sc->sc_fb;
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/* Fill in the remaining fbdevice values */
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fb->fb_driver = &bwtwofbdriver;
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fb->fb_device = &sc->sc_dev;
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fb->fb_type.fb_type = FBTYPE_SUN2BW;
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fb->fb_type.fb_cmsize = 0;
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fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes;
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printf(": %s, %d x %d", name,
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fb->fb_type.fb_width, fb->fb_type.fb_height);
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/* Insure video is enabled */
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sc->sc_set_video(sc, 1);
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if (isconsole) {
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printf(" (console)\n");
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#ifdef RASTERCONSOLE
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/*
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* XXX rcons doesn't seem to work properly on the overlay
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* XXX plane. This is a temporary kludge until someone
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* XXX fixes it.
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*/
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if ((fb->fb_flags & FB_PFOUR) == 0 ||
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(sc->sc_ovtype == BWO_NONE))
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fbrcons_init(fb);
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#endif
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} else
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printf("\n");
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if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE)) {
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char *ovnam;
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switch (sc->sc_ovtype) {
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case BWO_CGFOUR:
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ovnam = "cgfour";
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break;
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case BWO_CGEIGHT:
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ovnam = "cgeight";
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break;
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default:
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ovnam = "unknown";
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break;
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}
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printf("%s: %s overlay plane\n", sc->sc_dev.dv_xname, ovnam);
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}
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/*
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* If we're on an overlay plane of a color framebuffer,
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* then we don't force the issue in fb_attach() because
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* we'd like the color framebuffer to actually be the
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* "console framebuffer". We're only around to speed
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* up rconsole.
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*/
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if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE ))
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fb_attach(fb, 0);
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else
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fb_attach(fb, isconsole);
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}
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int
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bwtwoopen(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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int unit = minor(dev);
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if (unit >= bwtwo_cd.cd_ndevs || bwtwo_cd.cd_devs[unit] == NULL)
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return (ENXIO);
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return (0);
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}
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int
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bwtwoioctl(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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struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)];
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switch (cmd) {
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case FBIOGTYPE:
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*(struct fbtype *)data = sc->sc_fb.fb_type;
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break;
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case FBIOGVIDEO:
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*(int *)data = sc->sc_get_video(sc);
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break;
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case FBIOSVIDEO:
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sc->sc_set_video(sc, (*(int *)data));
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break;
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default:
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return (ENOTTY);
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}
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return (0);
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}
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static void
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bwtwounblank(dev)
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struct device *dev;
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{
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struct bwtwo_softc *sc = (struct bwtwo_softc *)dev;
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sc->sc_set_video(sc, 1);
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}
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/*
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* Return the address that would map the given device at the given
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* offset, allowing for the given protection, or return -1 for error.
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*/
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paddr_t
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bwtwommap(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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struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)];
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if (off & PGOFSET)
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panic("bwtwommap");
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if (off >= sc->sc_fb.fb_type.fb_size)
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return (-1);
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return (bus_space_mmap(sc->sc_bustag,
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sc->sc_paddr, sc->sc_pixeloffset + off,
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prot, BUS_SPACE_MAP_LINEAR));
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}
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