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kbdmux.c
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/* * kbdmux.c */ /*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * 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_evdev.h" #include "opt_kbd.h" #include "opt_kbdmux.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> /* the initial key map, accent map and fkey strings */ #ifdef KBDMUX_DFLT_KEYMAP #define KBD_DFLT_KEYMAP #include "kbdmuxmap.h" #endif #include <dev/kbd/kbdtables.h> #ifdef EVDEV_SUPPORT #include <dev/evdev/evdev.h> #include <dev/evdev/input.h> #endif #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 TASK (1 << 2) /* interrupt task queued */ int ks_polling; /* poll nesting count */ 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 */ #ifdef EVDEV_SUPPORT struct evdev_dev * ks_evdev; int ks_evdev_state; #endif 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 callout_func_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, .poll = kbdmux_poll, }; #ifdef EVDEV_SUPPORT static evdev_event_t kbdmux_ev_event; static const struct evdev_methods kbdmux_evdev_methods = { .ev_event = kbdmux_ev_event, }; #endif /* * 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]; #ifdef EVDEV_SUPPORT struct evdev_dev *evdev; char phys_loc[NAMELEN]; #endif 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); #ifdef EVDEV_SUPPORT /* register as evdev provider */ evdev = evdev_alloc(); evdev_set_name(evdev, "System keyboard multiplexer"); snprintf(phys_loc, NAMELEN, KEYBOARD_NAME"%d", unit); evdev_set_phys(evdev, phys_loc); evdev_set_id(evdev, BUS_VIRTUAL, 0, 0, 0); evdev_set_methods(evdev, kbd, &kbdmux_evdev_methods); evdev_support_event(evdev, EV_SYN); evdev_support_event(evdev, EV_KEY); evdev_support_event(evdev, EV_LED); evdev_support_event(evdev, EV_REP); evdev_support_all_known_keys(evdev); evdev_support_led(evdev, LED_NUML); evdev_support_led(evdev, LED_CAPSL); evdev_support_led(evdev, LED_SCROLLL); if (evdev_register_mtx(evdev, &Giant)) evdev_free(evdev); else state->ks_evdev = evdev; state->ks_evdev_state = 0; #endif 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); #ifdef EVDEV_SUPPORT evdev_free(state->ks_evdev); #endif 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_polling != 0) { 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 ++; #ifdef EVDEV_SUPPORT /* push evdev event */ if (evdev_rcpt_mask & EVDEV_RCPT_KBDMUX && state->ks_evdev != NULL) { uint16_t key = evdev_scancode2key(&state->ks_evdev_state, scancode); if (key != KEY_RESERVED) { evdev_push_event(state->ks_evdev, EV_KEY, key, scancode & 0x80 ? 0 : 1); evdev_sync(state->ks_evdev); } } #endif /* 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; #ifdef EVDEV_SUPPORT if (state->ks_evdev != NULL && evdev_rcpt_mask & EVDEV_RCPT_KBDMUX) evdev_push_leds(state->ks_evdev, *(int *)arg); #endif /* KDSETLED on all slave keyboards */ SLIST_FOREACH(k, &state->ks_kbds, next) (void)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) (void)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]; #ifdef EVDEV_SUPPORT if (state->ks_evdev != NULL && evdev_rcpt_mask & EVDEV_RCPT_KBDMUX) evdev_push_repeats(state->ks_evdev, kbd); #endif /* perform command on all slave keyboards */ SLIST_FOREACH(k, &state->ks_kbds, next) (void)kbdd_ioctl(k->kbd, cmd, arg); KBDMUX_UNLOCK(state); break; case PIO_KEYMAP: /* set keyboard translation table */ case OPIO_KEYMAP: /* set keyboard translation table (compat) */ 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) (void)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; 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 */ 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_polling++; else state->ks_polling--; /* set poll on slave keyboards */ SLIST_FOREACH(k, &state->ks_kbds, next) kbdd_poll(k->kbd, on); KBDMUX_UNLOCK(state); return (0); } #ifdef EVDEV_SUPPORT static void kbdmux_ev_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, int32_t value) { keyboard_t *kbd = evdev_get_softc(evdev); if (evdev_rcpt_mask & EVDEV_RCPT_KBDMUX && (type == EV_LED || type == EV_REP)) { mtx_lock(&Giant); kbd_ev_event(kbd, type, code, value); mtx_unlock(&Giant); } } #endif /***************************************************************************** ***************************************************************************** ** 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) { error = ENXIO; break; } kbd = NULL; if ((error = (*sw->probe)(0, NULL, 0)) != 0 || (error = (*sw->init)(0, &kbd, NULL, 0)) != 0) break; #ifdef KBD_INSTALL_CDEV if ((error = kbd_attach(kbd)) != 0) { (*sw->term)(kbd); break; } #endif if ((error = (*sw->enable)(kbd)) != 0) break; break; case MOD_UNLOAD: if ((sw = kbd_get_switch(KEYBOARD_NAME)) == NULL) { error = 0; break; } 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); #ifdef EVDEV_SUPPORT MODULE_DEPEND(kbdmux, evdev, 1, 1, 1); #endif
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