1376 lines
32 KiB
C
1376 lines
32 KiB
C
/*
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* vkbd.c
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*/
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/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $Id: vkbd.c,v 1.20 2004/11/15 23:53:30 max Exp $
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*/
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#include "opt_kbd.h"
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/eventhandler.h>
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#include <sys/fcntl.h>
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#include <sys/kbio.h>
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#include <sys/kernel.h>
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#include <sys/limits.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/poll.h>
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#include <sys/proc.h>
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#include <sys/queue.h>
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#include <sys/selinfo.h>
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#include <sys/systm.h>
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#include <sys/taskqueue.h>
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#include <sys/uio.h>
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#include <dev/kbd/kbdreg.h>
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#include <dev/kbd/kbdtables.h>
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#include <dev/vkbd/vkbd_var.h>
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#define DEVICE_NAME "vkbdctl"
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#define KEYBOARD_NAME "vkbd"
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MALLOC_DECLARE(M_VKBD);
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MALLOC_DEFINE(M_VKBD, KEYBOARD_NAME, "Virtual AT keyboard");
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/*****************************************************************************
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*****************************************************************************
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** Keyboard state
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*****************************************************************************
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*****************************************************************************/
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/*
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* XXX
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* For now rely on Giant mutex to protect our data structures.
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* Just like the rest of keyboard drivers and syscons(4) do.
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*/
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#if 0 /* not yet */
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#define VKBD_LOCK_DECL struct mtx ks_lock
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#define VKBD_LOCK_INIT(s) mtx_init(&(s)->ks_lock, "vkbd_lock", NULL, MTX_DEF|MTX_RECURSE)
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#define VKBD_LOCK_DESTROY(s) mtx_destroy(&(s)->ks_lock)
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#define VKBD_LOCK(s) mtx_lock(&(s)->ks_lock)
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#define VKBD_UNLOCK(s) mtx_unlock(&(s)->ks_lock)
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#define VKBD_LOCK_ASSERT(s, w) mtx_assert(&(s)->ks_lock, w)
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#define VKBD_SLEEP(s, f, d, t) \
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msleep(&(s)->f, &(s)->ks_lock, PCATCH | (PZERO + 1), d, t)
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#else
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#define VKBD_LOCK_DECL
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#define VKBD_LOCK_INIT(s)
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#define VKBD_LOCK_DESTROY(s)
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#define VKBD_LOCK(s)
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#define VKBD_UNLOCK(s)
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#define VKBD_LOCK_ASSERT(s, w)
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#define VKBD_SLEEP(s, f, d, t) tsleep(&(s)->f, PCATCH | (PZERO + 1), d, t)
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#endif
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#define VKBD_KEYBOARD(d) \
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kbd_get_keyboard(kbd_find_keyboard(KEYBOARD_NAME, dev2unit(d)))
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/* vkbd queue */
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struct vkbd_queue
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{
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int q[VKBD_Q_SIZE]; /* queue */
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int head; /* index of the first code */
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int tail; /* index of the last code */
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int cc; /* number of codes in queue */
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};
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typedef struct vkbd_queue vkbd_queue_t;
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/* vkbd state */
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struct vkbd_state
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{
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struct cdev *ks_dev; /* control device */
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struct selinfo ks_rsel; /* select(2) */
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struct selinfo ks_wsel;
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vkbd_queue_t ks_inq; /* input key codes queue */
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struct task ks_task; /* interrupt task */
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int ks_flags; /* flags */
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#define OPEN (1 << 0) /* control device is open */
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#define COMPOSE (1 << 1) /* compose flag */
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#define STATUS (1 << 2) /* status has changed */
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#define TASK (1 << 3) /* interrupt task queued */
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#define READ (1 << 4) /* read pending */
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#define WRITE (1 << 5) /* write pending */
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int ks_mode; /* K_XLATE, K_RAW, K_CODE */
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int ks_polling; /* polling flag */
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int ks_state; /* shift/lock key state */
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int ks_accents; /* accent key index (> 0) */
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u_int ks_composed_char; /* composed char code */
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u_char ks_prefix; /* AT scan code prefix */
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VKBD_LOCK_DECL;
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};
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typedef struct vkbd_state vkbd_state_t;
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/*****************************************************************************
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*****************************************************************************
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** Character device
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*****************************************************************************
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*****************************************************************************/
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static void vkbd_dev_clone(void *, struct ucred *, char *, int,
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struct cdev **);
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static d_open_t vkbd_dev_open;
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static d_close_t vkbd_dev_close;
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static d_read_t vkbd_dev_read;
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static d_write_t vkbd_dev_write;
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static d_ioctl_t vkbd_dev_ioctl;
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static d_poll_t vkbd_dev_poll;
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static void vkbd_dev_intr(void *, int);
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static void vkbd_status_changed(vkbd_state_t *);
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static int vkbd_data_ready(vkbd_state_t *);
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static int vkbd_data_read(vkbd_state_t *, int);
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static struct cdevsw vkbd_dev_cdevsw = {
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.d_version = D_VERSION,
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.d_flags = D_NEEDGIANT | D_NEEDMINOR,
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.d_open = vkbd_dev_open,
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.d_close = vkbd_dev_close,
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.d_read = vkbd_dev_read,
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.d_write = vkbd_dev_write,
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.d_ioctl = vkbd_dev_ioctl,
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.d_poll = vkbd_dev_poll,
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.d_name = DEVICE_NAME,
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};
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static struct clonedevs *vkbd_dev_clones = NULL;
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/* Clone device */
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static void
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vkbd_dev_clone(void *arg, struct ucred *cred, char *name, int namelen,
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struct cdev **dev)
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{
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int unit;
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if (*dev != NULL)
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return;
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if (strcmp(name, DEVICE_NAME) == 0)
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unit = -1;
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else if (dev_stdclone(name, NULL, DEVICE_NAME, &unit) != 1)
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return; /* don't recognize the name */
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/* find any existing device, or allocate new unit number */
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if (clone_create(&vkbd_dev_clones, &vkbd_dev_cdevsw, &unit, dev, 0))
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*dev = make_dev_credf(MAKEDEV_REF, &vkbd_dev_cdevsw, unit,
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cred, UID_ROOT, GID_WHEEL, 0600, DEVICE_NAME "%d",
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unit);
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}
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/* Open device */
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static int
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vkbd_dev_open(struct cdev *dev, int flag, int mode, struct thread *td)
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{
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int unit = dev2unit(dev), error;
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keyboard_switch_t *sw = NULL;
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keyboard_t *kbd = NULL;
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vkbd_state_t *state = (vkbd_state_t *) dev->si_drv1;
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/* XXX FIXME: dev->si_drv1 locking */
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if (state == NULL) {
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if ((sw = kbd_get_switch(KEYBOARD_NAME)) == NULL)
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return (ENXIO);
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if ((error = (*sw->probe)(unit, NULL, 0)) != 0 ||
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(error = (*sw->init)(unit, &kbd, NULL, 0)) != 0)
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return (error);
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state = (vkbd_state_t *) kbd->kb_data;
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if ((error = (*sw->enable)(kbd)) != 0) {
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(*sw->term)(kbd);
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return (error);
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}
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#ifdef KBD_INSTALL_CDEV
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if ((error = kbd_attach(kbd)) != 0) {
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(*sw->disable)(kbd);
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(*sw->term)(kbd);
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return (error);
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}
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#endif /* def KBD_INSTALL_CDEV */
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dev->si_drv1 = kbd->kb_data;
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}
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VKBD_LOCK(state);
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if (state->ks_flags & OPEN) {
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VKBD_UNLOCK(state);
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return (EBUSY);
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}
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state->ks_flags |= OPEN;
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state->ks_dev = dev;
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VKBD_UNLOCK(state);
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return (0);
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}
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/* Close device */
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static int
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vkbd_dev_close(struct cdev *dev, int foo, int bar, struct thread *td)
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{
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keyboard_t *kbd = VKBD_KEYBOARD(dev);
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vkbd_state_t *state = NULL;
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if (kbd == NULL)
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return (ENXIO);
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if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1)
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panic("%s: kbd->kb_data != dev->si_drv1\n", __func__);
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state = (vkbd_state_t *) kbd->kb_data;
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VKBD_LOCK(state);
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/* wait for interrupt task */
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while (state->ks_flags & TASK)
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VKBD_SLEEP(state, ks_task, "vkbdc", 0);
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/* wakeup poll()ers */
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selwakeuppri(&state->ks_rsel, PZERO + 1);
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selwakeuppri(&state->ks_wsel, PZERO + 1);
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state->ks_flags &= ~OPEN;
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state->ks_dev = NULL;
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state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0;
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VKBD_UNLOCK(state);
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kbdd_disable(kbd);
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#ifdef KBD_INSTALL_CDEV
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kbd_detach(kbd);
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#endif /* def KBD_INSTALL_CDEV */
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kbdd_term(kbd);
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/* XXX FIXME: dev->si_drv1 locking */
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dev->si_drv1 = NULL;
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return (0);
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}
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/* Read status */
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static int
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vkbd_dev_read(struct cdev *dev, struct uio *uio, int flag)
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{
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keyboard_t *kbd = VKBD_KEYBOARD(dev);
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vkbd_state_t *state = NULL;
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vkbd_status_t status;
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int error;
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if (kbd == NULL)
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return (ENXIO);
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if (uio->uio_resid != sizeof(status))
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return (EINVAL);
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if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1)
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panic("%s: kbd->kb_data != dev->si_drv1\n", __func__);
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state = (vkbd_state_t *) kbd->kb_data;
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VKBD_LOCK(state);
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if (state->ks_flags & READ) {
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VKBD_UNLOCK(state);
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return (EALREADY);
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}
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state->ks_flags |= READ;
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again:
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if (state->ks_flags & STATUS) {
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state->ks_flags &= ~STATUS;
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status.mode = state->ks_mode;
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status.leds = KBD_LED_VAL(kbd);
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status.lock = state->ks_state & LOCK_MASK;
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status.delay = kbd->kb_delay1;
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status.rate = kbd->kb_delay2;
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bzero(status.reserved, sizeof(status.reserved));
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error = uiomove(&status, sizeof(status), uio);
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} else {
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if (flag & O_NONBLOCK) {
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error = EWOULDBLOCK;
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goto done;
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}
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error = VKBD_SLEEP(state, ks_flags, "vkbdr", 0);
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if (error != 0)
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goto done;
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goto again;
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}
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done:
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state->ks_flags &= ~READ;
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VKBD_UNLOCK(state);
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return (error);
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}
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/* Write scancodes */
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static int
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vkbd_dev_write(struct cdev *dev, struct uio *uio, int flag)
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{
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keyboard_t *kbd = VKBD_KEYBOARD(dev);
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vkbd_state_t *state = NULL;
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vkbd_queue_t *q = NULL;
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int error, avail, bytes;
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if (kbd == NULL)
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return (ENXIO);
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if (uio->uio_resid <= 0)
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return (EINVAL);
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if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1)
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panic("%s: kbd->kb_data != dev->si_drv1\n", __func__);
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state = (vkbd_state_t *) kbd->kb_data;
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VKBD_LOCK(state);
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if (state->ks_flags & WRITE) {
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VKBD_UNLOCK(state);
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return (EALREADY);
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}
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state->ks_flags |= WRITE;
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error = 0;
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q = &state->ks_inq;
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while (uio->uio_resid >= sizeof(q->q[0])) {
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if (q->head == q->tail) {
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if (q->cc == 0)
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avail = nitems(q->q) - q->head;
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else
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avail = 0; /* queue must be full */
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} else if (q->head < q->tail)
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avail = nitems(q->q) - q->tail;
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else
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avail = q->head - q->tail;
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if (avail == 0) {
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if (flag & O_NONBLOCK) {
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error = EWOULDBLOCK;
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break;
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}
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error = VKBD_SLEEP(state, ks_inq, "vkbdw", 0);
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if (error != 0)
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break;
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} else {
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bytes = avail * sizeof(q->q[0]);
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if (bytes > uio->uio_resid) {
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avail = uio->uio_resid / sizeof(q->q[0]);
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bytes = avail * sizeof(q->q[0]);
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}
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error = uiomove((void *) &q->q[q->tail], bytes, uio);
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if (error != 0)
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break;
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q->cc += avail;
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q->tail += avail;
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if (q->tail == nitems(q->q))
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q->tail = 0;
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/* queue interrupt task if needed */
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if (!(state->ks_flags & TASK) &&
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taskqueue_enqueue(taskqueue_swi_giant, &state->ks_task) == 0)
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state->ks_flags |= TASK;
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}
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}
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state->ks_flags &= ~WRITE;
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VKBD_UNLOCK(state);
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return (error);
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}
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/* Process ioctl */
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static int
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vkbd_dev_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
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{
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keyboard_t *kbd = VKBD_KEYBOARD(dev);
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return ((kbd == NULL)? ENXIO : kbdd_ioctl(kbd, cmd, data));
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}
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/* Poll device */
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static int
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vkbd_dev_poll(struct cdev *dev, int events, struct thread *td)
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{
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vkbd_state_t *state = (vkbd_state_t *) dev->si_drv1;
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vkbd_queue_t *q = NULL;
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int revents = 0;
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if (state == NULL)
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return (ENXIO);
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VKBD_LOCK(state);
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q = &state->ks_inq;
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if (events & (POLLIN | POLLRDNORM)) {
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if (state->ks_flags & STATUS)
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revents |= events & (POLLIN | POLLRDNORM);
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else
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selrecord(td, &state->ks_rsel);
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}
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if (events & (POLLOUT | POLLWRNORM)) {
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if (q->cc < nitems(q->q))
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revents |= events & (POLLOUT | POLLWRNORM);
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else
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selrecord(td, &state->ks_wsel);
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}
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VKBD_UNLOCK(state);
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return (revents);
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}
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|
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/* Interrupt handler */
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void
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vkbd_dev_intr(void *xkbd, int pending)
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{
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keyboard_t *kbd = (keyboard_t *) xkbd;
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vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
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kbdd_intr(kbd, NULL);
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VKBD_LOCK(state);
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state->ks_flags &= ~TASK;
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wakeup(&state->ks_task);
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VKBD_UNLOCK(state);
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}
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|
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/* Set status change flags */
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static void
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vkbd_status_changed(vkbd_state_t *state)
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{
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VKBD_LOCK_ASSERT(state, MA_OWNED);
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|
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if (!(state->ks_flags & STATUS)) {
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state->ks_flags |= STATUS;
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selwakeuppri(&state->ks_rsel, PZERO + 1);
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wakeup(&state->ks_flags);
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}
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}
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|
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/* Check if we have data in the input queue */
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static int
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vkbd_data_ready(vkbd_state_t *state)
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{
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VKBD_LOCK_ASSERT(state, MA_OWNED);
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return (state->ks_inq.cc > 0);
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}
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|
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/* Read one code from the input queue */
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static int
|
|
vkbd_data_read(vkbd_state_t *state, int wait)
|
|
{
|
|
vkbd_queue_t *q = &state->ks_inq;
|
|
int c;
|
|
|
|
VKBD_LOCK_ASSERT(state, MA_OWNED);
|
|
|
|
if (q->cc == 0)
|
|
return (-1);
|
|
|
|
/* get first code from the queue */
|
|
q->cc --;
|
|
c = q->q[q->head ++];
|
|
if (q->head == nitems(q->q))
|
|
q->head = 0;
|
|
|
|
/* wakeup ks_inq writers/poll()ers */
|
|
selwakeuppri(&state->ks_wsel, PZERO + 1);
|
|
wakeup(q);
|
|
|
|
return (c);
|
|
}
|
|
|
|
/****************************************************************************
|
|
****************************************************************************
|
|
** Keyboard driver
|
|
****************************************************************************
|
|
****************************************************************************/
|
|
|
|
static int vkbd_configure(int flags);
|
|
static kbd_probe_t vkbd_probe;
|
|
static kbd_init_t vkbd_init;
|
|
static kbd_term_t vkbd_term;
|
|
static kbd_intr_t vkbd_intr;
|
|
static kbd_test_if_t vkbd_test_if;
|
|
static kbd_enable_t vkbd_enable;
|
|
static kbd_disable_t vkbd_disable;
|
|
static kbd_read_t vkbd_read;
|
|
static kbd_check_t vkbd_check;
|
|
static kbd_read_char_t vkbd_read_char;
|
|
static kbd_check_char_t vkbd_check_char;
|
|
static kbd_ioctl_t vkbd_ioctl;
|
|
static kbd_lock_t vkbd_lock;
|
|
static void vkbd_clear_state_locked(vkbd_state_t *state);
|
|
static kbd_clear_state_t vkbd_clear_state;
|
|
static kbd_get_state_t vkbd_get_state;
|
|
static kbd_set_state_t vkbd_set_state;
|
|
static kbd_poll_mode_t vkbd_poll;
|
|
|
|
static keyboard_switch_t vkbdsw = {
|
|
.probe = vkbd_probe,
|
|
.init = vkbd_init,
|
|
.term = vkbd_term,
|
|
.intr = vkbd_intr,
|
|
.test_if = vkbd_test_if,
|
|
.enable = vkbd_enable,
|
|
.disable = vkbd_disable,
|
|
.read = vkbd_read,
|
|
.check = vkbd_check,
|
|
.read_char = vkbd_read_char,
|
|
.check_char = vkbd_check_char,
|
|
.ioctl = vkbd_ioctl,
|
|
.lock = vkbd_lock,
|
|
.clear_state = vkbd_clear_state,
|
|
.get_state = vkbd_get_state,
|
|
.set_state = vkbd_set_state,
|
|
.poll = vkbd_poll,
|
|
};
|
|
|
|
static int typematic(int delay, int rate);
|
|
static int typematic_delay(int delay);
|
|
static int typematic_rate(int rate);
|
|
|
|
/* Return the number of found keyboards */
|
|
static int
|
|
vkbd_configure(int flags)
|
|
{
|
|
return (1);
|
|
}
|
|
|
|
/* Detect a keyboard */
|
|
static int
|
|
vkbd_probe(int unit, void *arg, int flags)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/* Reset and initialize the keyboard (stolen from atkbd.c) */
|
|
static int
|
|
vkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags)
|
|
{
|
|
keyboard_t *kbd = NULL;
|
|
vkbd_state_t *state = NULL;
|
|
keymap_t *keymap = NULL;
|
|
accentmap_t *accmap = NULL;
|
|
fkeytab_t *fkeymap = NULL;
|
|
int fkeymap_size, delay[2];
|
|
int error, needfree;
|
|
|
|
if (*kbdp == NULL) {
|
|
*kbdp = kbd = malloc(sizeof(*kbd), M_VKBD, M_NOWAIT | M_ZERO);
|
|
state = malloc(sizeof(*state), M_VKBD, M_NOWAIT | M_ZERO);
|
|
keymap = malloc(sizeof(key_map), M_VKBD, M_NOWAIT);
|
|
accmap = malloc(sizeof(accent_map), M_VKBD, M_NOWAIT);
|
|
fkeymap = malloc(sizeof(fkey_tab), M_VKBD, M_NOWAIT);
|
|
fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]);
|
|
needfree = 1;
|
|
if ((kbd == NULL) || (state == NULL) || (keymap == NULL) ||
|
|
(accmap == NULL) || (fkeymap == NULL)) {
|
|
error = ENOMEM;
|
|
goto bad;
|
|
}
|
|
|
|
VKBD_LOCK_INIT(state);
|
|
state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0;
|
|
TASK_INIT(&state->ks_task, 0, vkbd_dev_intr, (void *) kbd);
|
|
} else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) {
|
|
return (0);
|
|
} else {
|
|
kbd = *kbdp;
|
|
state = (vkbd_state_t *) kbd->kb_data;
|
|
keymap = kbd->kb_keymap;
|
|
accmap = kbd->kb_accentmap;
|
|
fkeymap = kbd->kb_fkeytab;
|
|
fkeymap_size = kbd->kb_fkeytab_size;
|
|
needfree = 0;
|
|
}
|
|
|
|
if (!KBD_IS_PROBED(kbd)) {
|
|
kbd_init_struct(kbd, KEYBOARD_NAME, KB_OTHER, unit, flags, 0, 0);
|
|
bcopy(&key_map, keymap, sizeof(key_map));
|
|
bcopy(&accent_map, accmap, sizeof(accent_map));
|
|
bcopy(fkey_tab, fkeymap,
|
|
imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab)));
|
|
kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size);
|
|
kbd->kb_data = (void *)state;
|
|
|
|
KBD_FOUND_DEVICE(kbd);
|
|
KBD_PROBE_DONE(kbd);
|
|
|
|
VKBD_LOCK(state);
|
|
vkbd_clear_state_locked(state);
|
|
state->ks_mode = K_XLATE;
|
|
/* FIXME: set the initial value for lock keys in ks_state */
|
|
VKBD_UNLOCK(state);
|
|
}
|
|
if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) {
|
|
kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY;
|
|
|
|
vkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);
|
|
delay[0] = kbd->kb_delay1;
|
|
delay[1] = kbd->kb_delay2;
|
|
vkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay);
|
|
|
|
KBD_INIT_DONE(kbd);
|
|
}
|
|
if (!KBD_IS_CONFIGURED(kbd)) {
|
|
if (kbd_register(kbd) < 0) {
|
|
error = ENXIO;
|
|
goto bad;
|
|
}
|
|
KBD_CONFIG_DONE(kbd);
|
|
}
|
|
|
|
return (0);
|
|
bad:
|
|
if (needfree) {
|
|
if (state != NULL)
|
|
free(state, M_VKBD);
|
|
if (keymap != NULL)
|
|
free(keymap, M_VKBD);
|
|
if (accmap != NULL)
|
|
free(accmap, M_VKBD);
|
|
if (fkeymap != NULL)
|
|
free(fkeymap, M_VKBD);
|
|
if (kbd != NULL) {
|
|
free(kbd, M_VKBD);
|
|
*kbdp = NULL; /* insure ref doesn't leak to caller */
|
|
}
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/* Finish using this keyboard */
|
|
static int
|
|
vkbd_term(keyboard_t *kbd)
|
|
{
|
|
vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
|
|
|
|
kbd_unregister(kbd);
|
|
|
|
VKBD_LOCK_DESTROY(state);
|
|
bzero(state, sizeof(*state));
|
|
free(state, M_VKBD);
|
|
|
|
free(kbd->kb_keymap, M_VKBD);
|
|
free(kbd->kb_accentmap, M_VKBD);
|
|
free(kbd->kb_fkeytab, M_VKBD);
|
|
free(kbd, M_VKBD);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Keyboard interrupt routine */
|
|
static int
|
|
vkbd_intr(keyboard_t *kbd, void *arg)
|
|
{
|
|
int c;
|
|
|
|
if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) {
|
|
/* let the callback function to process the input */
|
|
(*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT,
|
|
kbd->kb_callback.kc_arg);
|
|
} else {
|
|
/* read and discard the input; no one is waiting for input */
|
|
do {
|
|
c = vkbd_read_char(kbd, FALSE);
|
|
} while (c != NOKEY);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Test the interface to the device */
|
|
static int
|
|
vkbd_test_if(keyboard_t *kbd)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Enable the access to the device; until this function is called,
|
|
* the client cannot read from the keyboard.
|
|
*/
|
|
|
|
static int
|
|
vkbd_enable(keyboard_t *kbd)
|
|
{
|
|
KBD_ACTIVATE(kbd);
|
|
return (0);
|
|
}
|
|
|
|
/* Disallow the access to the device */
|
|
static int
|
|
vkbd_disable(keyboard_t *kbd)
|
|
{
|
|
KBD_DEACTIVATE(kbd);
|
|
return (0);
|
|
}
|
|
|
|
/* Read one byte from the keyboard if it's allowed */
|
|
static int
|
|
vkbd_read(keyboard_t *kbd, int wait)
|
|
{
|
|
vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
|
|
int c;
|
|
|
|
VKBD_LOCK(state);
|
|
c = vkbd_data_read(state, wait);
|
|
VKBD_UNLOCK(state);
|
|
|
|
if (c != -1)
|
|
kbd->kb_count ++;
|
|
|
|
return (KBD_IS_ACTIVE(kbd)? c : -1);
|
|
}
|
|
|
|
/* Check if data is waiting */
|
|
static int
|
|
vkbd_check(keyboard_t *kbd)
|
|
{
|
|
vkbd_state_t *state = NULL;
|
|
int ready;
|
|
|
|
if (!KBD_IS_ACTIVE(kbd))
|
|
return (FALSE);
|
|
|
|
state = (vkbd_state_t *) kbd->kb_data;
|
|
|
|
VKBD_LOCK(state);
|
|
ready = vkbd_data_ready(state);
|
|
VKBD_UNLOCK(state);
|
|
|
|
return (ready);
|
|
}
|
|
|
|
/* Read char from the keyboard (stolen from atkbd.c) */
|
|
static u_int
|
|
vkbd_read_char(keyboard_t *kbd, int wait)
|
|
{
|
|
vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
|
|
u_int action;
|
|
int scancode, keycode;
|
|
|
|
VKBD_LOCK(state);
|
|
|
|
next_code:
|
|
|
|
/* do we have a composed char to return? */
|
|
if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) {
|
|
action = state->ks_composed_char;
|
|
state->ks_composed_char = 0;
|
|
if (action > UCHAR_MAX) {
|
|
VKBD_UNLOCK(state);
|
|
return (ERRKEY);
|
|
}
|
|
|
|
VKBD_UNLOCK(state);
|
|
return (action);
|
|
}
|
|
|
|
/* see if there is something in the keyboard port */
|
|
scancode = vkbd_data_read(state, wait);
|
|
if (scancode == -1) {
|
|
VKBD_UNLOCK(state);
|
|
return (NOKEY);
|
|
}
|
|
/* XXX FIXME: check for -1 if wait == 1! */
|
|
|
|
kbd->kb_count ++;
|
|
|
|
/* return the byte as is for the K_RAW mode */
|
|
if (state->ks_mode == K_RAW) {
|
|
VKBD_UNLOCK(state);
|
|
return (scancode);
|
|
}
|
|
|
|
/* translate the scan code into a keycode */
|
|
keycode = scancode & 0x7F;
|
|
switch (state->ks_prefix) {
|
|
case 0x00: /* normal scancode */
|
|
switch(scancode) {
|
|
case 0xB8: /* left alt (compose key) released */
|
|
if (state->ks_flags & COMPOSE) {
|
|
state->ks_flags &= ~COMPOSE;
|
|
if (state->ks_composed_char > UCHAR_MAX)
|
|
state->ks_composed_char = 0;
|
|
}
|
|
break;
|
|
case 0x38: /* left alt (compose key) pressed */
|
|
if (!(state->ks_flags & COMPOSE)) {
|
|
state->ks_flags |= COMPOSE;
|
|
state->ks_composed_char = 0;
|
|
}
|
|
break;
|
|
case 0xE0:
|
|
case 0xE1:
|
|
state->ks_prefix = scancode;
|
|
goto next_code;
|
|
}
|
|
break;
|
|
case 0xE0: /* 0xE0 prefix */
|
|
state->ks_prefix = 0;
|
|
switch (keycode) {
|
|
case 0x1C: /* right enter key */
|
|
keycode = 0x59;
|
|
break;
|
|
case 0x1D: /* right ctrl key */
|
|
keycode = 0x5A;
|
|
break;
|
|
case 0x35: /* keypad divide key */
|
|
keycode = 0x5B;
|
|
break;
|
|
case 0x37: /* print scrn key */
|
|
keycode = 0x5C;
|
|
break;
|
|
case 0x38: /* right alt key (alt gr) */
|
|
keycode = 0x5D;
|
|
break;
|
|
case 0x46: /* ctrl-pause/break on AT 101 (see below) */
|
|
keycode = 0x68;
|
|
break;
|
|
case 0x47: /* grey home key */
|
|
keycode = 0x5E;
|
|
break;
|
|
case 0x48: /* grey up arrow key */
|
|
keycode = 0x5F;
|
|
break;
|
|
case 0x49: /* grey page up key */
|
|
keycode = 0x60;
|
|
break;
|
|
case 0x4B: /* grey left arrow key */
|
|
keycode = 0x61;
|
|
break;
|
|
case 0x4D: /* grey right arrow key */
|
|
keycode = 0x62;
|
|
break;
|
|
case 0x4F: /* grey end key */
|
|
keycode = 0x63;
|
|
break;
|
|
case 0x50: /* grey down arrow key */
|
|
keycode = 0x64;
|
|
break;
|
|
case 0x51: /* grey page down key */
|
|
keycode = 0x65;
|
|
break;
|
|
case 0x52: /* grey insert key */
|
|
keycode = 0x66;
|
|
break;
|
|
case 0x53: /* grey delete key */
|
|
keycode = 0x67;
|
|
break;
|
|
/* the following 3 are only used on the MS "Natural" keyboard */
|
|
case 0x5b: /* left Window key */
|
|
keycode = 0x69;
|
|
break;
|
|
case 0x5c: /* right Window key */
|
|
keycode = 0x6a;
|
|
break;
|
|
case 0x5d: /* menu key */
|
|
keycode = 0x6b;
|
|
break;
|
|
case 0x5e: /* power key */
|
|
keycode = 0x6d;
|
|
break;
|
|
case 0x5f: /* sleep key */
|
|
keycode = 0x6e;
|
|
break;
|
|
case 0x63: /* wake key */
|
|
keycode = 0x6f;
|
|
break;
|
|
default: /* ignore everything else */
|
|
goto next_code;
|
|
}
|
|
break;
|
|
case 0xE1: /* 0xE1 prefix */
|
|
/*
|
|
* The pause/break key on the 101 keyboard produces:
|
|
* E1-1D-45 E1-9D-C5
|
|
* Ctrl-pause/break produces:
|
|
* E0-46 E0-C6 (See above.)
|
|
*/
|
|
state->ks_prefix = 0;
|
|
if (keycode == 0x1D)
|
|
state->ks_prefix = 0x1D;
|
|
goto next_code;
|
|
/* NOT REACHED */
|
|
case 0x1D: /* pause / break */
|
|
state->ks_prefix = 0;
|
|
if (keycode != 0x45)
|
|
goto next_code;
|
|
keycode = 0x68;
|
|
break;
|
|
}
|
|
|
|
if (kbd->kb_type == KB_84) {
|
|
switch (keycode) {
|
|
case 0x37: /* *(numpad)/print screen */
|
|
if (state->ks_flags & SHIFTS)
|
|
keycode = 0x5c; /* print screen */
|
|
break;
|
|
case 0x45: /* num lock/pause */
|
|
if (state->ks_flags & CTLS)
|
|
keycode = 0x68; /* pause */
|
|
break;
|
|
case 0x46: /* scroll lock/break */
|
|
if (state->ks_flags & CTLS)
|
|
keycode = 0x6c; /* break */
|
|
break;
|
|
}
|
|
} else if (kbd->kb_type == KB_101) {
|
|
switch (keycode) {
|
|
case 0x5c: /* print screen */
|
|
if (state->ks_flags & ALTS)
|
|
keycode = 0x54; /* sysrq */
|
|
break;
|
|
case 0x68: /* pause/break */
|
|
if (state->ks_flags & CTLS)
|
|
keycode = 0x6c; /* break */
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* return the key code in the K_CODE mode */
|
|
if (state->ks_mode == K_CODE) {
|
|
VKBD_UNLOCK(state);
|
|
return (keycode | (scancode & 0x80));
|
|
}
|
|
|
|
/* compose a character code */
|
|
if (state->ks_flags & COMPOSE) {
|
|
switch (keycode | (scancode & 0x80)) {
|
|
/* key pressed, process it */
|
|
case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */
|
|
state->ks_composed_char *= 10;
|
|
state->ks_composed_char += keycode - 0x40;
|
|
if (state->ks_composed_char > UCHAR_MAX) {
|
|
VKBD_UNLOCK(state);
|
|
return (ERRKEY);
|
|
}
|
|
goto next_code;
|
|
case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */
|
|
state->ks_composed_char *= 10;
|
|
state->ks_composed_char += keycode - 0x47;
|
|
if (state->ks_composed_char > UCHAR_MAX) {
|
|
VKBD_UNLOCK(state);
|
|
return (ERRKEY);
|
|
}
|
|
goto next_code;
|
|
case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */
|
|
state->ks_composed_char *= 10;
|
|
state->ks_composed_char += keycode - 0x4E;
|
|
if (state->ks_composed_char > UCHAR_MAX) {
|
|
VKBD_UNLOCK(state);
|
|
return (ERRKEY);
|
|
}
|
|
goto next_code;
|
|
case 0x52: /* keypad 0 */
|
|
state->ks_composed_char *= 10;
|
|
if (state->ks_composed_char > UCHAR_MAX) {
|
|
VKBD_UNLOCK(state);
|
|
return (ERRKEY);
|
|
}
|
|
goto next_code;
|
|
|
|
/* key released, no interest here */
|
|
case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */
|
|
case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */
|
|
case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */
|
|
case 0xD2: /* keypad 0 */
|
|
goto next_code;
|
|
|
|
case 0x38: /* left alt key */
|
|
break;
|
|
|
|
default:
|
|
if (state->ks_composed_char > 0) {
|
|
state->ks_flags &= ~COMPOSE;
|
|
state->ks_composed_char = 0;
|
|
VKBD_UNLOCK(state);
|
|
return (ERRKEY);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* keycode to key action */
|
|
action = genkbd_keyaction(kbd, keycode, scancode & 0x80,
|
|
&state->ks_state, &state->ks_accents);
|
|
if (action == NOKEY)
|
|
goto next_code;
|
|
|
|
VKBD_UNLOCK(state);
|
|
|
|
return (action);
|
|
}
|
|
|
|
/* Check if char is waiting */
|
|
static int
|
|
vkbd_check_char(keyboard_t *kbd)
|
|
{
|
|
vkbd_state_t *state = NULL;
|
|
int ready;
|
|
|
|
if (!KBD_IS_ACTIVE(kbd))
|
|
return (FALSE);
|
|
|
|
state = (vkbd_state_t *) kbd->kb_data;
|
|
|
|
VKBD_LOCK(state);
|
|
if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0))
|
|
ready = TRUE;
|
|
else
|
|
ready = vkbd_data_ready(state);
|
|
VKBD_UNLOCK(state);
|
|
|
|
return (ready);
|
|
}
|
|
|
|
/* Some useful control functions (stolen from atkbd.c) */
|
|
static int
|
|
vkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
|
|
{
|
|
vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
|
|
int i;
|
|
#ifdef COMPAT_FREEBSD6
|
|
int ival;
|
|
#endif
|
|
|
|
VKBD_LOCK(state);
|
|
|
|
switch (cmd) {
|
|
case KDGKBMODE: /* get keyboard mode */
|
|
*(int *)arg = state->ks_mode;
|
|
break;
|
|
|
|
#ifdef COMPAT_FREEBSD6
|
|
case _IO('K', 7):
|
|
ival = IOCPARM_IVAL(arg);
|
|
arg = (caddr_t)&ival;
|
|
/* FALLTHROUGH */
|
|
#endif
|
|
case KDSKBMODE: /* set keyboard mode */
|
|
switch (*(int *)arg) {
|
|
case K_XLATE:
|
|
if (state->ks_mode != K_XLATE) {
|
|
/* make lock key state and LED state match */
|
|
state->ks_state &= ~LOCK_MASK;
|
|
state->ks_state |= KBD_LED_VAL(kbd);
|
|
vkbd_status_changed(state);
|
|
}
|
|
/* FALLTHROUGH */
|
|
|
|
case K_RAW:
|
|
case K_CODE:
|
|
if (state->ks_mode != *(int *)arg) {
|
|
vkbd_clear_state_locked(state);
|
|
state->ks_mode = *(int *)arg;
|
|
vkbd_status_changed(state);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
VKBD_UNLOCK(state);
|
|
return (EINVAL);
|
|
}
|
|
break;
|
|
|
|
case KDGETLED: /* get keyboard LED */
|
|
*(int *)arg = KBD_LED_VAL(kbd);
|
|
break;
|
|
|
|
#ifdef COMPAT_FREEBSD6
|
|
case _IO('K', 66):
|
|
ival = IOCPARM_IVAL(arg);
|
|
arg = (caddr_t)&ival;
|
|
/* FALLTHROUGH */
|
|
#endif
|
|
case KDSETLED: /* set keyboard LED */
|
|
/* NOTE: lock key state in ks_state won't be changed */
|
|
if (*(int *)arg & ~LOCK_MASK) {
|
|
VKBD_UNLOCK(state);
|
|
return (EINVAL);
|
|
}
|
|
|
|
i = *(int *)arg;
|
|
/* replace CAPS LED with ALTGR LED for ALTGR keyboards */
|
|
if (state->ks_mode == K_XLATE &&
|
|
kbd->kb_keymap->n_keys > ALTGR_OFFSET) {
|
|
if (i & ALKED)
|
|
i |= CLKED;
|
|
else
|
|
i &= ~CLKED;
|
|
}
|
|
|
|
KBD_LED_VAL(kbd) = *(int *)arg;
|
|
vkbd_status_changed(state);
|
|
break;
|
|
|
|
case KDGKBSTATE: /* get lock key state */
|
|
*(int *)arg = state->ks_state & LOCK_MASK;
|
|
break;
|
|
|
|
#ifdef COMPAT_FREEBSD6
|
|
case _IO('K', 20):
|
|
ival = IOCPARM_IVAL(arg);
|
|
arg = (caddr_t)&ival;
|
|
/* FALLTHROUGH */
|
|
#endif
|
|
case KDSKBSTATE: /* set lock key state */
|
|
if (*(int *)arg & ~LOCK_MASK) {
|
|
VKBD_UNLOCK(state);
|
|
return (EINVAL);
|
|
}
|
|
state->ks_state &= ~LOCK_MASK;
|
|
state->ks_state |= *(int *)arg;
|
|
vkbd_status_changed(state);
|
|
VKBD_UNLOCK(state);
|
|
/* set LEDs and quit */
|
|
return (vkbd_ioctl(kbd, KDSETLED, arg));
|
|
|
|
case KDSETREPEAT: /* set keyboard repeat rate (new interface) */
|
|
i = typematic(((int *)arg)[0], ((int *)arg)[1]);
|
|
kbd->kb_delay1 = typematic_delay(i);
|
|
kbd->kb_delay2 = typematic_rate(i);
|
|
vkbd_status_changed(state);
|
|
break;
|
|
|
|
#ifdef COMPAT_FREEBSD6
|
|
case _IO('K', 67):
|
|
ival = IOCPARM_IVAL(arg);
|
|
arg = (caddr_t)&ival;
|
|
/* FALLTHROUGH */
|
|
#endif
|
|
case KDSETRAD: /* set keyboard repeat rate (old interface) */
|
|
kbd->kb_delay1 = typematic_delay(*(int *)arg);
|
|
kbd->kb_delay2 = typematic_rate(*(int *)arg);
|
|
vkbd_status_changed(state);
|
|
break;
|
|
|
|
case PIO_KEYMAP: /* set keyboard translation table */
|
|
case PIO_KEYMAPENT: /* set keyboard translation table entry */
|
|
case PIO_DEADKEYMAP: /* set accent key translation table */
|
|
#ifdef COMPAT_FREEBSD13
|
|
case OPIO_KEYMAP: /* set keyboard translation table (compat) */
|
|
case OPIO_DEADKEYMAP: /* set accent key translation table (compat) */
|
|
#endif /* COMPAT_FREEBSD13 */
|
|
state->ks_accents = 0;
|
|
/* FALLTHROUGH */
|
|
|
|
default:
|
|
VKBD_UNLOCK(state);
|
|
return (genkbd_commonioctl(kbd, cmd, arg));
|
|
}
|
|
|
|
VKBD_UNLOCK(state);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Lock the access to the keyboard */
|
|
static int
|
|
vkbd_lock(keyboard_t *kbd, int lock)
|
|
{
|
|
return (1); /* XXX */
|
|
}
|
|
|
|
/* Clear the internal state of the keyboard */
|
|
static void
|
|
vkbd_clear_state_locked(vkbd_state_t *state)
|
|
{
|
|
VKBD_LOCK_ASSERT(state, MA_OWNED);
|
|
|
|
state->ks_flags &= ~COMPOSE;
|
|
state->ks_polling = 0;
|
|
state->ks_state &= LOCK_MASK; /* preserve locking key state */
|
|
state->ks_accents = 0;
|
|
state->ks_composed_char = 0;
|
|
/* state->ks_prefix = 0; XXX */
|
|
|
|
/* flush ks_inq and wakeup writers/poll()ers */
|
|
state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0;
|
|
selwakeuppri(&state->ks_wsel, PZERO + 1);
|
|
wakeup(&state->ks_inq);
|
|
}
|
|
|
|
static void
|
|
vkbd_clear_state(keyboard_t *kbd)
|
|
{
|
|
vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data;
|
|
|
|
VKBD_LOCK(state);
|
|
vkbd_clear_state_locked(state);
|
|
VKBD_UNLOCK(state);
|
|
}
|
|
|
|
/* Save the internal state */
|
|
static int
|
|
vkbd_get_state(keyboard_t *kbd, void *buf, size_t len)
|
|
{
|
|
if (len == 0)
|
|
return (sizeof(vkbd_state_t));
|
|
if (len < sizeof(vkbd_state_t))
|
|
return (-1);
|
|
bcopy(kbd->kb_data, buf, sizeof(vkbd_state_t)); /* XXX locking? */
|
|
return (0);
|
|
}
|
|
|
|
/* Set the internal state */
|
|
static int
|
|
vkbd_set_state(keyboard_t *kbd, void *buf, size_t len)
|
|
{
|
|
if (len < sizeof(vkbd_state_t))
|
|
return (ENOMEM);
|
|
bcopy(buf, kbd->kb_data, sizeof(vkbd_state_t)); /* XXX locking? */
|
|
return (0);
|
|
}
|
|
|
|
/* Set polling */
|
|
static int
|
|
vkbd_poll(keyboard_t *kbd, int on)
|
|
{
|
|
vkbd_state_t *state = NULL;
|
|
|
|
state = (vkbd_state_t *) kbd->kb_data;
|
|
|
|
VKBD_LOCK(state);
|
|
|
|
if (on)
|
|
state->ks_polling ++;
|
|
else
|
|
state->ks_polling --;
|
|
|
|
VKBD_UNLOCK(state);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Local functions
|
|
*/
|
|
|
|
static int
|
|
typematic_delay(int i)
|
|
{
|
|
return (kbdelays[(i >> 5) & 3]);
|
|
}
|
|
|
|
static int
|
|
typematic_rate(int i)
|
|
{
|
|
return (kbrates[i & 0x1f]);
|
|
}
|
|
|
|
static int
|
|
typematic(int delay, int rate)
|
|
{
|
|
int value;
|
|
int i;
|
|
|
|
for (i = nitems(kbdelays) - 1; i > 0; i--) {
|
|
if (delay >= kbdelays[i])
|
|
break;
|
|
}
|
|
value = i << 5;
|
|
for (i = nitems(kbrates) - 1; i > 0; i--) {
|
|
if (rate >= kbrates[i])
|
|
break;
|
|
}
|
|
value |= i;
|
|
return (value);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*****************************************************************************
|
|
** Module
|
|
*****************************************************************************
|
|
*****************************************************************************/
|
|
|
|
KEYBOARD_DRIVER(vkbd, vkbdsw, vkbd_configure);
|
|
|
|
static int
|
|
vkbd_modevent(module_t mod, int type, void *data)
|
|
{
|
|
static eventhandler_tag tag;
|
|
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
clone_setup(&vkbd_dev_clones);
|
|
tag = EVENTHANDLER_REGISTER(dev_clone, vkbd_dev_clone, 0, 1000);
|
|
if (tag == NULL) {
|
|
clone_cleanup(&vkbd_dev_clones);
|
|
return (ENOMEM);
|
|
}
|
|
kbd_add_driver(&vkbd_kbd_driver);
|
|
break;
|
|
|
|
case MOD_UNLOAD:
|
|
kbd_delete_driver(&vkbd_kbd_driver);
|
|
EVENTHANDLER_DEREGISTER(dev_clone, tag);
|
|
clone_cleanup(&vkbd_dev_clones);
|
|
break;
|
|
|
|
default:
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
DEV_MODULE(vkbd, vkbd_modevent, NULL);
|