--- /dev/null
+/*
+ * kbdmux.c
+ */
+
+/*-
+ * Copyright (c) 2005 Maksim Yevmenkin <m_evmenkin@yahoo.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: kbdmux.c,v 1.4 2005/07/14 17:38:35 max Exp $
+ * $FreeBSD$
+ */
+
+#include "opt_compat.h"
+#include "opt_kbd.h"
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/consio.h>
+#include <sys/fcntl.h>
+#include <sys/kbio.h>
+#include <sys/kernel.h>
+#include <sys/limits.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/poll.h>
+#include <sys/proc.h>
+#include <sys/queue.h>
+#include <sys/selinfo.h>
+#include <sys/systm.h>
+#include <sys/taskqueue.h>
+#include <sys/uio.h>
+#include <dev/kbd/kbdreg.h>
+#include <dev/kbd/kbdtables.h>
+
+#define KEYBOARD_NAME "kbdmux"
+
+MALLOC_DECLARE(M_KBDMUX);
+MALLOC_DEFINE(M_KBDMUX, KEYBOARD_NAME, "Keyboard multiplexor");
+
+/*****************************************************************************
+ *****************************************************************************
+ ** Keyboard state
+ *****************************************************************************
+ *****************************************************************************/
+
+#define KBDMUX_Q_SIZE 512 /* input queue size */
+
+/*
+ * XXX
+ * For now rely on Giant mutex to protect our data structures.
+ * Just like the rest of keyboard drivers and syscons(4) do.
+ * Note that callout is initialized as not MP-safe to make sure
+ * Giant is held.
+ */
+
+#if 0 /* not yet */
+#define KBDMUX_LOCK_DECL_GLOBAL \
+ struct mtx ks_lock
+#define KBDMUX_LOCK_INIT(s) \
+ mtx_init(&(s)->ks_lock, "kbdmux", NULL, MTX_DEF|MTX_RECURSE)
+#define KBDMUX_LOCK_DESTROY(s) \
+ mtx_destroy(&(s)->ks_lock)
+#define KBDMUX_LOCK(s) \
+ mtx_lock(&(s)->ks_lock)
+#define KBDMUX_UNLOCK(s) \
+ mtx_unlock(&(s)->ks_lock)
+#define KBDMUX_LOCK_ASSERT(s, w) \
+ mtx_assert(&(s)->ks_lock, (w))
+#define KBDMUX_SLEEP(s, f, d, t) \
+ msleep(&(s)->f, &(s)->ks_lock, PCATCH | (PZERO + 1), (d), (t))
+#define KBDMUX_CALLOUT_INIT(s) \
+ callout_init_mtx(&(s)->ks_timo, &(s)->ks_lock, 0)
+#define KBDMUX_QUEUE_INTR(s) \
+ taskqueue_enqueue(taskqueue_swi_giant, &(s)->ks_task)
+#else
+#define KBDMUX_LOCK_DECL_GLOBAL
+
+#define KBDMUX_LOCK_INIT(s)
+
+#define KBDMUX_LOCK_DESTROY(s)
+
+#define KBDMUX_LOCK(s)
+
+#define KBDMUX_UNLOCK(s)
+
+#define KBDMUX_LOCK_ASSERT(s, w)
+
+#define KBDMUX_SLEEP(s, f, d, t) \
+ tsleep(&(s)->f, PCATCH | (PZERO + 1), (d), (t))
+#define KBDMUX_CALLOUT_INIT(s) \
+ callout_init(&(s)->ks_timo, 0)
+#define KBDMUX_QUEUE_INTR(s) \
+ taskqueue_enqueue(taskqueue_swi_giant, &(s)->ks_task)
+#endif /* not yet */
+
+/*
+ * kbdmux keyboard
+ */
+struct kbdmux_kbd
+{
+ keyboard_t *kbd; /* keyboard */
+ SLIST_ENTRY(kbdmux_kbd) next; /* link to next */
+};
+
+typedef struct kbdmux_kbd kbdmux_kbd_t;
+
+/*
+ * kbdmux state
+ */
+struct kbdmux_state
+{
+ char ks_inq[KBDMUX_Q_SIZE]; /* input chars queue */
+ unsigned int ks_inq_start;
+ unsigned int ks_inq_length;
+ struct task ks_task; /* interrupt task */
+ struct callout ks_timo; /* timeout handler */
+#define TICKS (hz) /* rate */
+
+ int ks_flags; /* flags */
+#define COMPOSE (1 << 0) /* compose char flag */
+#define POLLING (1 << 1) /* polling */
+#define TASK (1 << 2) /* interrupt task queued */
+
+ int ks_mode; /* K_XLATE, K_RAW, K_CODE */
+ int ks_state; /* state */
+ int ks_accents; /* accent key index (> 0) */
+ u_int ks_composed_char; /* composed char code */
+ u_char ks_prefix; /* AT scan code prefix */
+
+ SLIST_HEAD(, kbdmux_kbd) ks_kbds; /* keyboards */
+
+ KBDMUX_LOCK_DECL_GLOBAL;
+};
+
+typedef struct kbdmux_state kbdmux_state_t;
+
+/*****************************************************************************
+ *****************************************************************************
+ ** Helper functions
+ *****************************************************************************
+ *****************************************************************************/
+
+static task_fn_t kbdmux_kbd_intr;
+static timeout_t kbdmux_kbd_intr_timo;
+static kbd_callback_func_t kbdmux_kbd_event;
+
+static void
+kbdmux_kbd_putc(kbdmux_state_t *state, char c)
+{
+ unsigned int p;
+
+ if (state->ks_inq_length == KBDMUX_Q_SIZE)
+ return;
+
+ p = (state->ks_inq_start + state->ks_inq_length) % KBDMUX_Q_SIZE;
+ state->ks_inq[p] = c;
+ state->ks_inq_length++;
+}
+
+static int
+kbdmux_kbd_getc(kbdmux_state_t *state)
+{
+ unsigned char c;
+
+ if (state->ks_inq_length == 0)
+ return (-1);
+
+ c = state->ks_inq[state->ks_inq_start];
+ state->ks_inq_start = (state->ks_inq_start + 1) % KBDMUX_Q_SIZE;
+ state->ks_inq_length--;
+
+ return (c);
+}
+
+/*
+ * Interrupt handler task
+ */
+void
+kbdmux_kbd_intr(void *xkbd, int pending)
+{
+ keyboard_t *kbd = (keyboard_t *) xkbd;
+ kbdmux_state_t *state = (kbdmux_state_t *) kbd->kb_data;
+
+ kbdd_intr(kbd, NULL);
+
+ KBDMUX_LOCK(state);
+
+ state->ks_flags &= ~TASK;
+ wakeup(&state->ks_task);
+
+ KBDMUX_UNLOCK(state);
+}
+
+/*
+ * Schedule interrupt handler on timeout. Called with locked state.
+ */
+void
+kbdmux_kbd_intr_timo(void *xstate)
+{
+ kbdmux_state_t *state = (kbdmux_state_t *) xstate;
+
+ KBDMUX_LOCK_ASSERT(state, MA_OWNED);
+
+ if (callout_pending(&state->ks_timo))
+ return; /* callout was reset */
+
+ if (!callout_active(&state->ks_timo))
+ return; /* callout was stopped */
+
+ callout_deactivate(&state->ks_timo);
+
+ /* queue interrupt task if needed */
+ if (state->ks_inq_length > 0 && !(state->ks_flags & TASK) &&
+ KBDMUX_QUEUE_INTR(state) == 0)
+ state->ks_flags |= TASK;
+
+ /* re-schedule timeout */
+ callout_reset(&state->ks_timo, TICKS, kbdmux_kbd_intr_timo, state);
+}
+
+/*
+ * Process event from one of our keyboards
+ */
+static int
+kbdmux_kbd_event(keyboard_t *kbd, int event, void *arg)
+{
+ kbdmux_state_t *state = (kbdmux_state_t *) arg;
+
+ switch (event) {
+ case KBDIO_KEYINPUT: {
+ int c;
+
+ KBDMUX_LOCK(state);
+
+ /*
+ * Read all chars from the keyboard
+ *
+ * Turns out that atkbd(4) check_char() method may return
+ * "true" while read_char() method returns NOKEY. If this
+ * happens we could stuck in the loop below. Avoid this
+ * by breaking out of the loop if read_char() method returns
+ * NOKEY.
+ */
+
+ while (kbdd_check_char(kbd)) {
+ c = kbdd_read_char(kbd, 0);
+ if (c == NOKEY)
+ break;
+ if (c == ERRKEY)
+ continue; /* XXX ring bell */
+ if (!KBD_IS_BUSY(kbd))
+ continue; /* not open - discard the input */
+
+ kbdmux_kbd_putc(state, c);
+ }
+
+ /* queue interrupt task if needed */
+ if (state->ks_inq_length > 0 && !(state->ks_flags & TASK) &&
+ KBDMUX_QUEUE_INTR(state) == 0)
+ state->ks_flags |= TASK;
+
+ KBDMUX_UNLOCK(state);
+ } break;
+
+ case KBDIO_UNLOADING: {
+ kbdmux_kbd_t *k;
+
+ KBDMUX_LOCK(state);
+
+ SLIST_FOREACH(k, &state->ks_kbds, next)
+ if (k->kbd == kbd)
+ break;
+
+ if (k != NULL) {
+ kbd_release(k->kbd, &k->kbd);
+ SLIST_REMOVE(&state->ks_kbds, k, kbdmux_kbd, next);
+
+ k->kbd = NULL;
+
+ free(k, M_KBDMUX);
+ }
+
+ KBDMUX_UNLOCK(state);
+ } break;
+
+ default:
+ return (EINVAL);
+ /* NOT REACHED */
+ }
+
+ return (0);
+}
+
+/****************************************************************************
+ ****************************************************************************
+ ** Keyboard driver
+ ****************************************************************************
+ ****************************************************************************/
+
+static int kbdmux_configure(int flags);
+static kbd_probe_t kbdmux_probe;
+static kbd_init_t kbdmux_init;
+static kbd_term_t kbdmux_term;
+static kbd_intr_t kbdmux_intr;
+static kbd_test_if_t kbdmux_test_if;
+static kbd_enable_t kbdmux_enable;
+static kbd_disable_t kbdmux_disable;
+static kbd_read_t kbdmux_read;
+static kbd_check_t kbdmux_check;
+static kbd_read_char_t kbdmux_read_char;
+static kbd_check_char_t kbdmux_check_char;
+static kbd_ioctl_t kbdmux_ioctl;
+static kbd_lock_t kbdmux_lock;
+static void kbdmux_clear_state_locked(kbdmux_state_t *state);
+static kbd_clear_state_t kbdmux_clear_state;
+static kbd_get_state_t kbdmux_get_state;
+static kbd_set_state_t kbdmux_set_state;
+static kbd_poll_mode_t kbdmux_poll;
+
+static keyboard_switch_t kbdmuxsw = {
+ .probe = kbdmux_probe,
+ .init = kbdmux_init,
+ .term = kbdmux_term,
+ .intr = kbdmux_intr,
+ .test_if = kbdmux_test_if,
+ .enable = kbdmux_enable,
+ .disable = kbdmux_disable,
+ .read = kbdmux_read,
+ .check = kbdmux_check,
+ .read_char = kbdmux_read_char,
+ .check_char = kbdmux_check_char,
+ .ioctl = kbdmux_ioctl,
+ .lock = kbdmux_lock,
+ .clear_state = kbdmux_clear_state,
+ .get_state = kbdmux_get_state,
+ .set_state = kbdmux_set_state,
+ .get_fkeystr = genkbd_get_fkeystr,
+ .poll = kbdmux_poll,
+ .diag = genkbd_diag,
+};
+
+/*
+ * Return the number of found keyboards
+ */
+static int
+kbdmux_configure(int flags)
+{
+ return (1);
+}
+
+/*
+ * Detect a keyboard
+ */
+static int
+kbdmux_probe(int unit, void *arg, int flags)
+{
+ if (resource_disabled(KEYBOARD_NAME, unit))
+ return (ENXIO);
+
+ return (0);
+}
+
+/*
+ * Reset and initialize the keyboard (stolen from atkbd.c)
+ */
+static int
+kbdmux_init(int unit, keyboard_t **kbdp, void *arg, int flags)
+{
+ keyboard_t *kbd = NULL;
+ kbdmux_state_t *state = NULL;
+ keymap_t *keymap = NULL;
+ accentmap_t *accmap = NULL;
+ fkeytab_t *fkeymap = NULL;
+ int error, needfree, fkeymap_size, delay[2];
+
+ if (*kbdp == NULL) {
+ *kbdp = kbd = malloc(sizeof(*kbd), M_KBDMUX, M_NOWAIT | M_ZERO);
+ state = malloc(sizeof(*state), M_KBDMUX, M_NOWAIT | M_ZERO);
+ keymap = malloc(sizeof(key_map), M_KBDMUX, M_NOWAIT);
+ accmap = malloc(sizeof(accent_map), M_KBDMUX, M_NOWAIT);
+ fkeymap = malloc(sizeof(fkey_tab), M_KBDMUX, 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;
+ }
+
+ KBDMUX_LOCK_INIT(state);
+ TASK_INIT(&state->ks_task, 0, kbdmux_kbd_intr, (void *) kbd);
+ KBDMUX_CALLOUT_INIT(state);
+ SLIST_INIT(&state->ks_kbds);
+ } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) {
+ return (0);
+ } else {
+ kbd = *kbdp;
+ state = (kbdmux_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)) {
+ /* XXX assume 101/102 keys keyboard */
+ kbd_init_struct(kbd, KEYBOARD_NAME, KB_101, 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);
+
+ KBDMUX_LOCK(state);
+ kbdmux_clear_state_locked(state);
+ state->ks_mode = K_XLATE;
+ KBDMUX_UNLOCK(state);
+ }
+
+ if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) {
+ kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY;
+
+ kbdmux_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);
+
+ delay[0] = kbd->kb_delay1;
+ delay[1] = kbd->kb_delay2;
+ kbdmux_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);
+
+ KBDMUX_LOCK(state);
+ callout_reset(&state->ks_timo, TICKS, kbdmux_kbd_intr_timo, state);
+ KBDMUX_UNLOCK(state);
+ }
+
+ return (0);
+bad:
+ if (needfree) {
+ if (state != NULL)
+ free(state, M_KBDMUX);
+ if (keymap != NULL)
+ free(keymap, M_KBDMUX);
+ if (accmap != NULL)
+ free(accmap, M_KBDMUX);
+ if (fkeymap != NULL)
+ free(fkeymap, M_KBDMUX);
+ if (kbd != NULL) {
+ free(kbd, M_KBDMUX);
+ *kbdp = NULL; /* insure ref doesn't leak to caller */
+ }
+ }
+
+ return (error);
+}
+
+/*
+ * Finish using this keyboard
+ */
+static int
+kbdmux_term(keyboard_t *kbd)
+{
+ kbdmux_state_t *state = (kbdmux_state_t *) kbd->kb_data;
+ kbdmux_kbd_t *k;
+
+ KBDMUX_LOCK(state);
+
+ /* kill callout */
+ callout_stop(&state->ks_timo);
+
+ /* wait for interrupt task */
+ while (state->ks_flags & TASK)
+ KBDMUX_SLEEP(state, ks_task, "kbdmuxc", 0);
+
+ /* release all keyboards from the mux */
+ while ((k = SLIST_FIRST(&state->ks_kbds)) != NULL) {
+ kbd_release(k->kbd, &k->kbd);
+ SLIST_REMOVE_HEAD(&state->ks_kbds, next);
+
+ k->kbd = NULL;
+
+ free(k, M_KBDMUX);
+ }
+
+ KBDMUX_UNLOCK(state);
+
+ kbd_unregister(kbd);
+
+ KBDMUX_LOCK_DESTROY(state);
+ bzero(state, sizeof(*state));
+ free(state, M_KBDMUX);
+
+ free(kbd->kb_keymap, M_KBDMUX);
+ free(kbd->kb_accentmap, M_KBDMUX);
+ free(kbd->kb_fkeytab, M_KBDMUX);
+ free(kbd, M_KBDMUX);
+
+ return (0);
+}
+
+/*
+ * Keyboard interrupt routine
+ */
+static int
+kbdmux_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 = kbdmux_read_char(kbd, FALSE);
+ } while (c != NOKEY);
+ }
+
+ return (0);
+}
+
+/*
+ * Test the interface to the device
+ */
+static int
+kbdmux_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
+kbdmux_enable(keyboard_t *kbd)
+{
+ KBD_ACTIVATE(kbd);
+ return (0);
+}
+
+/*
+ * Disallow the access to the device
+ */
+static int
+kbdmux_disable(keyboard_t *kbd)
+{
+ KBD_DEACTIVATE(kbd);
+ return (0);
+}
+
+/*
+ * Read one byte from the keyboard if it's allowed
+ */
+static int
+kbdmux_read(keyboard_t *kbd, int wait)
+{
+ kbdmux_state_t *state = (kbdmux_state_t *) kbd->kb_data;
+ int c;
+
+ KBDMUX_LOCK(state);
+ c = kbdmux_kbd_getc(state);
+ KBDMUX_UNLOCK(state);
+
+ if (c != -1)
+ kbd->kb_count ++;
+
+ return (KBD_IS_ACTIVE(kbd)? c : -1);
+}
+
+/*
+ * Check if data is waiting
+ */
+static int
+kbdmux_check(keyboard_t *kbd)
+{
+ kbdmux_state_t *state = (kbdmux_state_t *) kbd->kb_data;
+ int ready;
+
+ if (!KBD_IS_ACTIVE(kbd))
+ return (FALSE);
+
+ KBDMUX_LOCK(state);
+ ready = (state->ks_inq_length > 0) ? TRUE : FALSE;
+ KBDMUX_UNLOCK(state);
+
+ return (ready);
+}
+
+/*
+ * Read char from the keyboard (stolen from atkbd.c)
+ */
+static u_int
+kbdmux_read_char(keyboard_t *kbd, int wait)
+{
+ kbdmux_state_t *state = (kbdmux_state_t *) kbd->kb_data;
+ u_int action;
+ int scancode, keycode;
+
+ KBDMUX_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) {
+ KBDMUX_UNLOCK(state);
+
+ return (ERRKEY);
+ }
+
+ KBDMUX_UNLOCK(state);
+
+ return (action);
+ }
+
+ /* see if there is something in the keyboard queue */
+ scancode = kbdmux_kbd_getc(state);
+ if (scancode == -1) {
+ if (state->ks_flags & POLLING) {
+ kbdmux_kbd_t *k;
+
+ SLIST_FOREACH(k, &state->ks_kbds, next) {
+ while (kbdd_check_char(k->kbd)) {
+ scancode = kbdd_read_char(k->kbd, 0);
+ if (scancode == NOKEY)
+ break;
+ if (scancode == ERRKEY)
+ continue;
+ if (!KBD_IS_BUSY(k->kbd))
+ continue;
+
+ kbdmux_kbd_putc(state, scancode);
+ }
+ }
+
+ if (state->ks_inq_length > 0)
+ goto next_code;
+ }
+
+ KBDMUX_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) {
+ KBDMUX_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;
+ case 0x64: /* [JP106USB] backslash, underscore */
+ keycode = 0x73;
+ 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;
+ }
+
+ /* XXX assume 101/102 keys AT keyboard */
+ 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) {
+ KBDMUX_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) {
+ KBDMUX_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) {
+ KBDMUX_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) {
+ KBDMUX_UNLOCK(state);
+ return (ERRKEY);
+ }
+ goto next_code;
+ case 0x52: /* keypad 0 */
+ state->ks_composed_char *= 10;
+ if (state->ks_composed_char > UCHAR_MAX) {
+ KBDMUX_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;
+ KBDMUX_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;
+
+ KBDMUX_UNLOCK(state);
+
+ return (action);
+}
+
+/*
+ * Check if char is waiting
+ */
+static int
+kbdmux_check_char(keyboard_t *kbd)
+{
+ kbdmux_state_t *state = (kbdmux_state_t *) kbd->kb_data;
+ int ready;
+
+ if (!KBD_IS_ACTIVE(kbd))
+ return (FALSE);
+
+ KBDMUX_LOCK(state);
+
+ if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char != 0))
+ ready = TRUE;
+ else
+ ready = (state->ks_inq_length > 0) ? TRUE : FALSE;
+
+ KBDMUX_UNLOCK(state);
+
+ return (ready);
+}
+
+/*
+ * Keyboard ioctl's
+ */
+static int
+kbdmux_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
+{
+ static int delays[] = {
+ 250, 500, 750, 1000
+ };
+
+ static int rates[] = {
+ 34, 38, 42, 46, 50, 55, 59, 63,
+ 68, 76, 84, 92, 100, 110, 118, 126,
+ 136, 152, 168, 184, 200, 220, 236, 252,
+ 272, 304, 336, 368, 400, 440, 472, 504
+ };
+
+ kbdmux_state_t *state = (kbdmux_state_t *) kbd->kb_data;
+ kbdmux_kbd_t *k;
+ keyboard_info_t *ki;
+ int error = 0, mode;
+#ifdef COMPAT_FREEBSD6
+ int ival;
+#endif
+
+ if (state == NULL)
+ return (ENXIO);
+
+ switch (cmd) {
+ case KBADDKBD: /* add keyboard to the mux */
+ ki = (keyboard_info_t *) arg;
+
+ if (ki == NULL || ki->kb_unit < 0 || ki->kb_name[0] == '\0' ||
+ strcmp(ki->kb_name, "*") == 0)
+ return (EINVAL); /* bad input */
+
+ KBDMUX_LOCK(state);
+
+ SLIST_FOREACH(k, &state->ks_kbds, next)
+ if (k->kbd->kb_unit == ki->kb_unit &&
+ strcmp(k->kbd->kb_name, ki->kb_name) == 0)
+ break;
+
+ if (k != NULL) {
+ KBDMUX_UNLOCK(state);
+
+ return (0); /* keyboard already in the mux */
+ }
+
+ k = malloc(sizeof(*k), M_KBDMUX, M_NOWAIT | M_ZERO);
+ if (k == NULL) {
+ KBDMUX_UNLOCK(state);
+
+ return (ENOMEM); /* out of memory */
+ }
+
+ k->kbd = kbd_get_keyboard(
+ kbd_allocate(
+ ki->kb_name,
+ ki->kb_unit,
+ (void *) &k->kbd,
+ kbdmux_kbd_event, (void *) state));
+ if (k->kbd == NULL) {
+ KBDMUX_UNLOCK(state);
+ free(k, M_KBDMUX);
+
+ return (EINVAL); /* bad keyboard */
+ }
+
+ kbdd_enable(k->kbd);
+ kbdd_clear_state(k->kbd);
+
+ /* set K_RAW mode on slave keyboard */
+ mode = K_RAW;
+ error = kbdd_ioctl(k->kbd, KDSKBMODE, (caddr_t)&mode);
+ if (error == 0) {
+ /* set lock keys state on slave keyboard */
+ mode = state->ks_state & LOCK_MASK;
+ error = kbdd_ioctl(k->kbd, KDSKBSTATE, (caddr_t)&mode);
+ }
+
+ if (error != 0) {
+ KBDMUX_UNLOCK(state);
+
+ kbd_release(k->kbd, &k->kbd);
+ k->kbd = NULL;
+
+ free(k, M_KBDMUX);
+
+ return (error); /* could not set mode */
+ }
+
+ SLIST_INSERT_HEAD(&state->ks_kbds, k, next);
+
+ KBDMUX_UNLOCK(state);
+ break;
+
+ case KBRELKBD: /* release keyboard from the mux */
+ ki = (keyboard_info_t *) arg;
+
+ if (ki == NULL || ki->kb_unit < 0 || ki->kb_name[0] == '\0' ||
+ strcmp(ki->kb_name, "*") == 0)
+ return (EINVAL); /* bad input */
+
+ KBDMUX_LOCK(state);
+
+ SLIST_FOREACH(k, &state->ks_kbds, next)
+ if (k->kbd->kb_unit == ki->kb_unit &&
+ strcmp(k->kbd->kb_name, ki->kb_name) == 0)
+ break;
+
+ if (k != NULL) {
+ error = kbd_release(k->kbd, &k->kbd);
+ if (error == 0) {
+ SLIST_REMOVE(&state->ks_kbds, k, kbdmux_kbd, next);
+
+ k->kbd = NULL;
+
+ free(k, M_KBDMUX);
+ }
+ } else
+ error = ENXIO; /* keyboard is not in the mux */
+
+ KBDMUX_UNLOCK(state);
+ break;
+
+ case KDGKBMODE: /* get kyboard mode */
+ KBDMUX_LOCK(state);
+ *(int *)arg = state->ks_mode;
+ KBDMUX_UNLOCK(state);
+ break;
+
+#ifdef COMPAT_FREEBSD6
+ case _IO('K', 7):
+ ival = IOCPARM_IVAL(arg);
+ arg = (caddr_t)&ival;
+ /* FALLTHROUGH */
+#endif
+ case KDSKBMODE: /* set keyboard mode */
+ KBDMUX_LOCK(state);
+
+ 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);
+ }
+ /* FALLTHROUGH */
+
+ case K_RAW:
+ case K_CODE:
+ if (state->ks_mode != *(int *)arg) {
+ kbdmux_clear_state_locked(state);
+ state->ks_mode = *(int *)arg;
+ }
+ break;
+
+ default:
+ error = EINVAL;
+ break;
+ }
+
+ KBDMUX_UNLOCK(state);
+ break;
+
+ case KDGETLED: /* get keyboard LED */
+ KBDMUX_LOCK(state);
+ *(int *)arg = KBD_LED_VAL(kbd);
+ KBDMUX_UNLOCK(state);
+ break;
+
+#ifdef COMPAT_FREEBSD6
+ case _IO('K', 66):
+ ival = IOCPARM_IVAL(arg);
+ arg = (caddr_t)&ival;
+ /* FALLTHROUGH */
+#endif
+ case KDSETLED: /* set keyboard LED */
+ KBDMUX_LOCK(state);
+
+ /* NOTE: lock key state in ks_state won't be changed */
+ if (*(int *)arg & ~LOCK_MASK) {
+ KBDMUX_UNLOCK(state);
+
+ return (EINVAL);
+ }
+
+ KBD_LED_VAL(kbd) = *(int *)arg;
+
+ /* KDSETLED on all slave keyboards */
+ SLIST_FOREACH(k, &state->ks_kbds, next)
+ kbdd_ioctl(k->kbd, KDSETLED, arg);
+
+ KBDMUX_UNLOCK(state);
+ break;
+
+ case KDGKBSTATE: /* get lock key state */
+ KBDMUX_LOCK(state);
+ *(int *)arg = state->ks_state & LOCK_MASK;
+ KBDMUX_UNLOCK(state);
+ break;
+
+#ifdef COMPAT_FREEBSD6
+ case _IO('K', 20):
+ ival = IOCPARM_IVAL(arg);
+ arg = (caddr_t)&ival;
+ /* FALLTHROUGH */
+#endif
+ case KDSKBSTATE: /* set lock key state */
+ KBDMUX_LOCK(state);
+
+ if (*(int *)arg & ~LOCK_MASK) {
+ KBDMUX_UNLOCK(state);
+
+ return (EINVAL);
+ }
+
+ state->ks_state &= ~LOCK_MASK;
+ state->ks_state |= *(int *)arg;
+
+ /* KDSKBSTATE on all slave keyboards */
+ SLIST_FOREACH(k, &state->ks_kbds, next)
+ kbdd_ioctl(k->kbd, KDSKBSTATE, arg);
+
+ KBDMUX_UNLOCK(state);
+
+ return (kbdmux_ioctl(kbd, KDSETLED, arg));
+ /* NOT REACHED */
+
+#ifdef COMPAT_FREEBSD6
+ case _IO('K', 67):
+ cmd = KDSETRAD;
+ ival = IOCPARM_IVAL(arg);
+ arg = (caddr_t)&ival;
+ /* FALLTHROUGH */
+#endif
+ case KDSETREPEAT: /* set keyboard repeat rate (new interface) */
+ case KDSETRAD: /* set keyboard repeat rate (old interface) */
+ KBDMUX_LOCK(state);
+
+ if (cmd == KDSETREPEAT) {
+ int i;
+
+ /* lookup delay */
+ for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; i --)
+ if (((int *)arg)[0] >= delays[i])
+ break;
+ mode = i << 5;
+
+ /* lookup rate */
+ for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; i --)
+ if (((int *)arg)[1] >= rates[i])
+ break;
+ mode |= i;
+ } else
+ mode = *(int *)arg;
+
+ if (mode & ~0x7f) {
+ KBDMUX_UNLOCK(state);
+
+ return (EINVAL);
+ }
+
+ kbd->kb_delay1 = delays[(mode >> 5) & 3];
+ kbd->kb_delay2 = rates[mode & 0x1f];
+
+ /* perform command on all slave keyboards */
+ SLIST_FOREACH(k, &state->ks_kbds, next)
+ kbdd_ioctl(k->kbd, cmd, arg);
+
+ KBDMUX_UNLOCK(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 */
+ KBDMUX_LOCK(state);
+ state->ks_accents = 0;
+
+ /* perform command on all slave keyboards */
+ SLIST_FOREACH(k, &state->ks_kbds, next)
+ kbdd_ioctl(k->kbd, cmd, arg);
+
+ KBDMUX_UNLOCK(state);
+ /* FALLTHROUGH */
+
+ default:
+ error = genkbd_commonioctl(kbd, cmd, arg);
+ break;
+ }
+
+ return (error);
+}
+
+/*
+ * Lock the access to the keyboard
+ */
+static int
+kbdmux_lock(keyboard_t *kbd, int lock)
+{
+ return (1); /* XXX */
+}
+
+/*
+ * Clear the internal state of the keyboard
+ */
+static void
+kbdmux_clear_state_locked(kbdmux_state_t *state)
+{
+ KBDMUX_LOCK_ASSERT(state, MA_OWNED);
+
+ state->ks_flags &= ~(COMPOSE|POLLING);
+ state->ks_state &= LOCK_MASK; /* preserve locking key state */
+ state->ks_accents = 0;
+ state->ks_composed_char = 0;
+/* state->ks_prefix = 0; XXX */
+ state->ks_inq_length = 0;
+}
+
+static void
+kbdmux_clear_state(keyboard_t *kbd)
+{
+ kbdmux_state_t *state = (kbdmux_state_t *) kbd->kb_data;
+
+ KBDMUX_LOCK(state);
+ kbdmux_clear_state_locked(state);
+ KBDMUX_UNLOCK(state);
+}
+
+/*
+ * Save the internal state
+ */
+static int
+kbdmux_get_state(keyboard_t *kbd, void *buf, size_t len)
+{
+ if (len == 0)
+ return (sizeof(kbdmux_state_t));
+ if (len < sizeof(kbdmux_state_t))
+ return (-1);
+
+ bcopy(kbd->kb_data, buf, sizeof(kbdmux_state_t)); /* XXX locking? */
+
+ return (0);
+}
+
+/*
+ * Set the internal state
+ */
+static int
+kbdmux_set_state(keyboard_t *kbd, void *buf, size_t len)
+{
+ if (len < sizeof(kbdmux_state_t))
+ return (ENOMEM);
+
+ bcopy(buf, kbd->kb_data, sizeof(kbdmux_state_t)); /* XXX locking? */
+
+ return (0);
+}
+
+/*
+ * Set polling
+ */
+static int
+kbdmux_poll(keyboard_t *kbd, int on)
+{
+ kbdmux_state_t *state = (kbdmux_state_t *) kbd->kb_data;
+ kbdmux_kbd_t *k;
+
+ KBDMUX_LOCK(state);
+
+ if (on)
+ state->ks_flags |= POLLING;
+ else
+ state->ks_flags &= ~POLLING;
+
+ /* set poll on slave keyboards */
+ SLIST_FOREACH(k, &state->ks_kbds, next)
+ kbdd_poll(k->kbd, on);
+
+ KBDMUX_UNLOCK(state);
+
+ return (0);
+}
+
+/*****************************************************************************
+ *****************************************************************************
+ ** Module
+ *****************************************************************************
+ *****************************************************************************/
+
+KEYBOARD_DRIVER(kbdmux, kbdmuxsw, kbdmux_configure);
+
+static int
+kbdmux_modevent(module_t mod, int type, void *data)
+{
+ keyboard_switch_t *sw;
+ keyboard_t *kbd;
+ int error;
+
+ switch (type) {
+ case MOD_LOAD:
+ if ((error = kbd_add_driver(&kbdmux_kbd_driver)) != 0)
+ break;
+
+ if ((sw = kbd_get_switch(KEYBOARD_NAME)) == NULL) {
+ kbd_delete_driver(&kbdmux_kbd_driver);
+ error = ENXIO;
+ break;
+ }
+
+ kbd = NULL;
+
+ if ((error = (*sw->probe)(0, NULL, 0)) != 0 ||
+ (error = (*sw->init)(0, &kbd, NULL, 0)) != 0) {
+ kbd_delete_driver(&kbdmux_kbd_driver);
+ break;
+ }
+
+#ifdef KBD_INSTALL_CDEV
+ if ((error = kbd_attach(kbd)) != 0) {
+ (*sw->term)(kbd);
+ kbd_delete_driver(&kbdmux_kbd_driver);
+ break;
+ }
+#endif
+
+ if ((error = (*sw->enable)(kbd)) != 0) {
+ (*sw->disable)(kbd);
+#ifdef KBD_INSTALL_CDEV
+ kbd_detach(kbd);
+#endif
+ (*sw->term)(kbd);
+ kbd_delete_driver(&kbdmux_kbd_driver);
+ break;
+ }
+ break;
+
+ case MOD_UNLOAD:
+ if ((sw = kbd_get_switch(KEYBOARD_NAME)) == NULL)
+ panic("kbd_get_switch(" KEYBOARD_NAME ") == NULL");
+
+ kbd = kbd_get_keyboard(kbd_find_keyboard(KEYBOARD_NAME, 0));
+ if (kbd != NULL) {
+ (*sw->disable)(kbd);
+#ifdef KBD_INSTALL_CDEV
+ kbd_detach(kbd);
+#endif
+ (*sw->term)(kbd);
+ kbd_delete_driver(&kbdmux_kbd_driver);
+ }
+ error = 0;
+ break;
+
+ default:
+ error = EOPNOTSUPP;
+ break;
+ }
+
+ return (error);
+}
+
+DEV_MODULE(kbdmux, kbdmux_modevent, NULL);
projects / dragonfly.git / commitdiff