654 lines
14 KiB
C
654 lines
14 KiB
C
/* $NetBSD: kd.c,v 1.19 2007/11/19 18:51:43 ad Exp $ */
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/*-
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* Copyright (c) 1996 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 Gordon W. Ross.
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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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* Keyboard/Display device.
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*
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* This driver exists simply to provide a tty device that
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* the indirect console driver can point to.
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* The kbd driver sends its input here.
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* Output goes to the screen via PROM printf.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: kd.c,v 1.19 2007/11/19 18:51:43 ad Exp $");
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/file.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/kauth.h>
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#include <machine/promlib.h>
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#include <machine/eeprom.h>
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#include <machine/psl.h>
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#include <machine/cpu.h>
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#include <machine/kbd.h>
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#include <machine/autoconf.h>
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#ifdef RASTERCONSOLE
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#include <dev/sun/fbio.h>
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#include <machine/fbvar.h>
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#endif
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#include <dev/cons.h>
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#include <dev/sun/event_var.h>
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#include <dev/sun/kbd_xlate.h>
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#include <dev/sun/kbdvar.h>
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#include <sun2/dev/cons.h>
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struct tty *fbconstty = 0; /* tty structure for frame buffer console */
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#define PUT_WSIZE 64
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struct kd_softc {
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struct device kd_dev; /* required first: base device */
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struct tty *kd_tty;
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int rows, cols;
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/* Console input hook */
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struct cons_channel *kd_in;
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};
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/*
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* There is no point in pretending there might be
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* more than one keyboard/display device.
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*/
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static struct kd_softc kd_softc;
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static int kd_is_console;
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static int kdparam(struct tty *, struct termios *);
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static void kdstart(struct tty *);
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static void kd_init(struct kd_softc *);
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static void kd_cons_input(int);
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static int kdcngetc(dev_t);
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static void kd_later(void*);
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dev_type_open(kdopen);
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dev_type_close(kdclose);
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dev_type_read(kdread);
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dev_type_write(kdwrite);
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dev_type_ioctl(kdioctl);
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dev_type_tty(kdtty);
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dev_type_poll(kdpoll);
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const struct cdevsw kd_cdevsw = {
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kdopen, kdclose, kdread, kdwrite, kdioctl,
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nostop, kdtty, kdpoll, nommap, ttykqfilter, D_TTY
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};
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/*
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* This is called by kbd_attach()
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* XXX - Make this a proper child of kbd?
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*/
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void
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kd_init(struct kd_softc *kd)
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{
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struct tty *tp;
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#ifdef PROM_OLDMON
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struct eeprom *ep;
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#endif
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#ifdef notyet /* PROM_OBP_V2 */
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int i;
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char *prop;
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#endif
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kd = &kd_softc; /* XXX */
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tp = ttymalloc();
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callout_setfunc(&tp->t_rstrt_ch, kd_later, tp);
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tp->t_oproc = kdstart;
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tp->t_param = kdparam;
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tp->t_dev = makedev(cdevsw_lookup_major(&kd_cdevsw), 0);
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tty_attach(tp);
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kd->kd_tty = tp;
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/*
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* get the console struct winsize.
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*/
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if (kd_is_console) {
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fbconstty = tp;
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#ifdef RASTERCONSOLE
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kd->rows = fbrcons_rows();
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kd->cols = fbrcons_cols();
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rcons_ttyinit(tp);
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#endif
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}
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/* else, consult the PROM */
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switch (prom_version()) {
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#ifdef PROM_OLDMON
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case PROM_OLDMON:
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if ((ep = (struct eeprom *)eeprom_va) == NULL)
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break;
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if (kd->rows == 0)
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kd->rows = (u_short)ep->eeTtyRows;
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if (kd->cols == 0)
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kd->cols = (u_short)ep->eeTtyCols;
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break;
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#endif /* PROM_OLDMON */
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#ifdef notyet /* PROM_OBP_V2 */
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case PROM_OBP_V0:
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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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if (kd->rows == 0 &&
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(prop = PROM_getpropstring(optionsnode, "screen-#rows"))) {
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i = 0;
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while (*prop != '\0')
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i = i * 10 + *prop++ - '0';
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kd->rows = (unsigned short)i;
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}
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if (kd->cols == 0 &&
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(prop = PROM_getpropstring(optionsnode, "screen-#columns"))) {
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i = 0;
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while (*prop != '\0')
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i = i * 10 + *prop++ - '0';
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kd->cols = (unsigned short)i;
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}
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break;
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#endif /* PROM_OBP_V2 */
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}
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return;
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}
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struct tty *
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kdtty(dev_t dev)
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{
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struct kd_softc *kd;
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kd = &kd_softc; /* XXX */
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return (kd->kd_tty);
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}
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int
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kdopen(dev_t dev, int flag, int mode, struct lwp *l)
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{
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struct kd_softc *kd;
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int error, s, unit;
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struct tty *tp;
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static int firstopen = 1;
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unit = minor(dev);
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if (unit != 0)
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return ENXIO;
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kd = &kd_softc; /* XXX */
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if (firstopen) {
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kd_init(kd);
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firstopen = 0;
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}
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tp = kd->kd_tty;
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/* It's simpler to do this up here. */
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if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp))
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return (EBUSY);
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s = spltty();
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if ((tp->t_state & TS_ISOPEN) == 0) {
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/* First open. */
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/* Notify the input device that serves us */
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struct cons_channel *cc = kd->kd_in;
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if (cc != NULL &&
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(error = (*cc->cc_iopen)(cc)) != 0) {
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splx(s);
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return (error);
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}
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ttychars(tp);
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tp->t_iflag = TTYDEF_IFLAG;
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tp->t_oflag = TTYDEF_OFLAG;
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tp->t_cflag = TTYDEF_CFLAG;
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tp->t_lflag = TTYDEF_LFLAG;
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tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
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(void) kdparam(tp, &tp->t_termios);
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ttsetwater(tp);
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tp->t_winsize.ws_row = kd->rows;
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tp->t_winsize.ws_col = kd->cols;
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/* Flush pending input? Clear translator? */
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/* This (pseudo)device always has SOFTCAR */
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tp->t_state |= TS_CARR_ON;
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}
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splx(s);
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return ((*tp->t_linesw->l_open)(dev, tp));
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}
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int
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kdclose(dev_t dev, int flag, int mode, struct lwp *l)
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{
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struct kd_softc *kd;
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struct tty *tp;
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struct cons_channel *cc;
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kd = &kd_softc; /* XXX */
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tp = kd->kd_tty;
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/* XXX This is for cons.c. */
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if ((tp->t_state & TS_ISOPEN) == 0)
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return 0;
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(*tp->t_linesw->l_close)(tp, flag);
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ttyclose(tp);
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if ((cc = kd->kd_in) != NULL)
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(void)(*cc->cc_iclose)(cc);
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return (0);
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}
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int
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kdread(dev_t dev, struct uio *uio, int flag)
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{
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struct kd_softc *kd;
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struct tty *tp;
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kd = &kd_softc; /* XXX */
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tp = kd->kd_tty;
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return ((*tp->t_linesw->l_read)(tp, uio, flag));
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}
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int
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kdwrite(dev_t dev, struct uio *uio, int flag)
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{
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struct kd_softc *kd;
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struct tty *tp;
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kd = &kd_softc; /* XXX */
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tp = kd->kd_tty;
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return ((*tp->t_linesw->l_write)(tp, uio, flag));
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}
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int
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kdpoll(dev_t dev, int events, struct lwp *l)
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{
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struct kd_softc *kd;
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struct tty *tp;
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kd = &kd_softc; /* XXX */
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tp = kd->kd_tty;
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return ((*tp->t_linesw->l_poll)(tp, events, l));
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}
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int
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kdioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
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{
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struct kd_softc *kd;
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struct tty *tp;
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int error;
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kd = &kd_softc; /* XXX */
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tp = kd->kd_tty;
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error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l);
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if (error != EPASSTHROUGH)
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return error;
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error = ttioctl(tp, cmd, data, flag, l);
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if (error != EPASSTHROUGH)
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return error;
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/* Handle any ioctl commands specific to kbd/display. */
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/* XXX - Send KB* ioctls to kbd module? */
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/* XXX - Send FB* ioctls to fb module? */
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return EPASSTHROUGH;
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}
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static int
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kdparam(struct tty *tp, struct termios *t)
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{
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/* XXX - These are ignored... */
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tp->t_ispeed = t->c_ispeed;
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tp->t_ospeed = t->c_ospeed;
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tp->t_cflag = t->c_cflag;
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return 0;
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}
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static void kd_putfb(struct tty *);
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static void
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kdstart(struct tty *tp)
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{
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struct clist *cl;
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int s1, s2;
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s1 = splsoftclock();
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s2 = spltty();
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if (tp->t_state & (TS_BUSY|TS_TTSTOP|TS_TIMEOUT))
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goto out;
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cl = &tp->t_outq;
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if (ttypull(tp)) {
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if (kd_is_console) {
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tp->t_state |= TS_BUSY;
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if (is_spl0(s1)) {
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/* called at level zero - update screen now. */
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splx(s2);
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kd_putfb(tp);
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s2 = spltty();
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tp->t_state &= ~TS_BUSY;
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} else {
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/* called at interrupt level - do it later */
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callout_schedule(&tp->t_rstrt_ch, 0);
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}
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} else {
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/*
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* This driver uses the PROM for writing the screen,
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* and that only works if this is the console device.
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* If this is not the console, just flush the output.
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* Sorry. (In that case, use xdm instead of getty.)
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*/
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ndflush(cl, cl->c_cc);
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}
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}
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out:
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splx(s2);
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splx(s1);
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}
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/*
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* Timeout function to do delayed writes to the screen.
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* Called at splsoftclock when requested by kdstart.
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*/
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static void
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kd_later(void *tpaddr)
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{
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struct tty *tp = tpaddr;
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int s;
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kd_putfb(tp);
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s = spltty();
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tp->t_state &= ~TS_BUSY;
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(*tp->t_linesw->l_start)(tp);
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splx(s);
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}
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/*
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* Put text on the screen using the PROM monitor.
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* This can take a while, so to avoid missing
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* interrupts, this is called at splsoftclock.
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*/
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static void
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kd_putfb(struct tty *tp)
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{
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char buf[PUT_WSIZE];
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struct clist *cl = &tp->t_outq;
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char *p, *end;
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int len;
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while ((len = q_to_b(cl, buf, PUT_WSIZE-1)) > 0) {
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/* PROM will barf if high bits are set. */
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p = buf;
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end = buf + len;
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while (p < end)
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*p++ &= 0x7f;
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/* Now let the PROM print it. */
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prom_putstr(buf, len);
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}
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}
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/*
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* Default PROM-based console input stream
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*/
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static int kd_rom_iopen(struct cons_channel *);
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static int kd_rom_iclose(struct cons_channel *);
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static struct cons_channel prom_cons_channel;
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int
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kd_rom_iopen(struct cons_channel *cc)
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{
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return (0);
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}
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int
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kd_rom_iclose(struct cons_channel *cc)
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{
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return (0);
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}
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/*
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* Our "interrupt" routine for input. This is called by
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* the keyboard driver (dev/sun/kbd.c) at spltty.
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*/
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void
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kd_cons_input(int c)
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{
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struct kd_softc *kd = &kd_softc;
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struct tty *tp;
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/* XXX: Make sure the device is open. */
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tp = kd->kd_tty;
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if (tp == NULL)
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return;
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if ((tp->t_state & TS_ISOPEN) == 0)
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return;
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(*tp->t_linesw->l_rint)(c, tp);
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}
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/****************************************************************
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* kd console support
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****************************************************************/
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/* The debugger gets its own key translation state. */
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static struct kbd_state *kdcn_state;
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static void kdcnprobe(struct consdev *);
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static void kdcninit(struct consdev *);
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static void kdcnputc(dev_t, int);
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static void kdcnpollc(dev_t, int);
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/* The keyboard driver uses cn_hw to access the real console driver */
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extern struct consdev consdev_prom;
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struct consdev consdev_kd = {
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kdcnprobe,
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kdcninit,
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kdcngetc,
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kdcnputc,
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kdcnpollc,
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NULL,
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};
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struct consdev *cn_hw = &consdev_kd;
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void
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cons_attach_input(struct cons_channel *cc, struct consdev *cn)
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{
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struct kd_softc *kd = &kd_softc;
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struct kbd_softc *kds = cc->cc_dev;
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struct kbd_state *ks;
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/* Share the keyboard state */
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kdcn_state = ks = &kds->k_state;
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kd->kd_in = cc;
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cc->cc_upstream = kd_cons_input;
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/* Attach lower level. */
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cn_hw->cn_dev = cn->cn_dev;
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cn_hw->cn_pollc = cn->cn_pollc;
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cn_hw->cn_getc = cn->cn_getc;
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/* Attach us as console. */
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cn_tab->cn_dev = makedev(cdevsw_lookup_major(&kd_cdevsw), 0);
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cn_tab->cn_probe = kdcnprobe;
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cn_tab->cn_init = kdcninit;
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cn_tab->cn_getc = kdcngetc;
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cn_tab->cn_pollc = kdcnpollc;
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cn_tab->cn_pri = CN_INTERNAL;
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/* Set up initial PROM input channel for /dev/console */
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prom_cons_channel.cc_dev = NULL;
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prom_cons_channel.cc_iopen = kd_rom_iopen;
|
|
prom_cons_channel.cc_iclose = kd_rom_iclose;
|
|
|
|
/* Indicate that it is OK to use the PROM fbwrite */
|
|
kd_is_console = 1;
|
|
}
|
|
|
|
|
|
void kd_attach_input(struct cons_channel *);
|
|
void
|
|
kd_attach_input(struct cons_channel *cc)
|
|
{
|
|
struct kd_softc *kd = &kd_softc;
|
|
|
|
kd->kd_in = cc;
|
|
cc->cc_upstream = kd_cons_input;
|
|
}
|
|
|
|
|
|
/* We never call this. */
|
|
static void
|
|
kdcnprobe(struct consdev *cn)
|
|
{
|
|
}
|
|
|
|
static void
|
|
kdcninit(struct consdev *cn)
|
|
{
|
|
#if 0
|
|
struct kbd_state *ks = kdcn_state;
|
|
|
|
cn->cn_dev = makedev(cdevsw_lookup_major(&kd_cdevsw), 0);
|
|
cn->cn_pri = CN_INTERNAL;
|
|
|
|
/* This prepares kbd_translate() */
|
|
ks->kbd_id = KBD_MIN_TYPE;
|
|
kbd_xlate_init(ks);
|
|
|
|
/* Set up initial PROM input channel for /dev/console */
|
|
prom_cons_channel.cc_dev = NULL;
|
|
prom_cons_channel.cc_iopen = kd_rom_iopen;
|
|
prom_cons_channel.cc_iclose = kd_rom_iclose;
|
|
cons_attach_input(&prom_cons_channel);
|
|
|
|
/* Indicate that it is OK to use the PROM fbwrite */
|
|
kd_is_console = 1;
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
kdcngetc(dev_t dev)
|
|
{
|
|
struct kbd_state *ks = kdcn_state;
|
|
int code, class, data, keysym;
|
|
extern int prom_cngetc(dev_t);
|
|
|
|
|
|
if (cn_hw->cn_getc == prom_cngetc) return (*cn_hw->cn_getc)(dev);
|
|
for (;;) {
|
|
code = (*cn_hw->cn_getc)(dev);
|
|
keysym = kbd_code_to_keysym(ks, code);
|
|
class = KEYSYM_CLASS(keysym);
|
|
|
|
switch (class) {
|
|
case KEYSYM_ASCII:
|
|
goto out;
|
|
|
|
case KEYSYM_CLRMOD:
|
|
case KEYSYM_SETMOD:
|
|
data = (keysym & 0x1F);
|
|
/* Only allow ctrl or shift. */
|
|
if (data > KBMOD_SHIFT_R)
|
|
break;
|
|
data = 1 << data;
|
|
if (class == KEYSYM_SETMOD)
|
|
ks->kbd_modbits |= data;
|
|
else
|
|
ks->kbd_modbits &= ~data;
|
|
break;
|
|
|
|
case KEYSYM_ALL_UP:
|
|
/* No toggle keys here. */
|
|
ks->kbd_modbits = 0;
|
|
break;
|
|
|
|
default: /* ignore all other keysyms */
|
|
break;
|
|
}
|
|
}
|
|
out:
|
|
return (keysym);
|
|
}
|
|
|
|
static void
|
|
kdcnputc(dev_t dev, int c)
|
|
{
|
|
int s;
|
|
|
|
s = splhigh();
|
|
prom_putchar(c);
|
|
splx(s);
|
|
}
|
|
|
|
static void
|
|
kdcnpollc(dev_t dev, int on)
|
|
{
|
|
struct kbd_state *ks = kdcn_state;
|
|
|
|
if (on) {
|
|
/* Entering debugger. */
|
|
#if NFB > 0
|
|
fb_unblank();
|
|
#endif
|
|
/* Clear shift keys too. */
|
|
ks->kbd_modbits = 0;
|
|
} else {
|
|
/* Resuming kernel. */
|
|
}
|
|
(*cn_hw->cn_pollc)(dev, on);
|
|
}
|