| /branches/network/uspace/srv/kbd/generic/kbd.c |
|---|
| 0,0 → 1,150 |
| /* |
| * Copyright (c) 2006 Josef Cejka |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. |
| */ |
| /** |
| * @addtogroup kbdgen generic |
| * @brief HelenOS generic uspace keyboard handler. |
| * @ingroup kbd |
| * @{ |
| */ |
| /** @file |
| */ |
| #include <ipc/ipc.h> |
| #include <ipc/services.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <ipc/ns.h> |
| #include <errno.h> |
| #include <arch/kbd.h> |
| #include <kbd.h> |
| #include <libadt/fifo.h> |
| #include <key_buffer.h> |
| #include <async.h> |
| #include <keys.h> |
| #define NAME "kbd" |
| int cons_connected = 0; |
| int phone2cons = -1; |
| keybuffer_t keybuffer; |
| static void irq_handler(ipc_callid_t iid, ipc_call_t *call) |
| { |
| int chr; |
| #ifdef MOUSE_ENABLED |
| if (mouse_arch_process(phone2cons, call)) |
| return; |
| #endif |
| kbd_arch_process(&keybuffer, call); |
| if (cons_connected && phone2cons != -1) { |
| /* |
| * recode to ASCII - one interrupt can produce more than one |
| * code so result is stored in fifo |
| */ |
| while (!keybuffer_empty(&keybuffer)) { |
| if (!keybuffer_pop(&keybuffer, (int *)&chr)) |
| break; |
| async_msg_1(phone2cons, KBD_PUSHCHAR, chr); |
| } |
| } |
| } |
| static void console_connection(ipc_callid_t iid, ipc_call_t *icall) |
| { |
| ipc_callid_t callid; |
| ipc_call_t call; |
| int retval; |
| if (cons_connected) { |
| ipc_answer_0(iid, ELIMIT); |
| return; |
| } |
| cons_connected = 1; |
| ipc_answer_0(iid, EOK); |
| while (1) { |
| callid = async_get_call(&call); |
| switch (IPC_GET_METHOD(call)) { |
| case IPC_M_PHONE_HUNGUP: |
| cons_connected = 0; |
| ipc_hangup(phone2cons); |
| phone2cons = -1; |
| ipc_answer_0(callid, EOK); |
| return; |
| case IPC_M_CONNECT_TO_ME: |
| if (phone2cons != -1) { |
| retval = ELIMIT; |
| break; |
| } |
| phone2cons = IPC_GET_ARG5(call); |
| retval = 0; |
| break; |
| default: |
| retval = EINVAL; |
| } |
| ipc_answer_0(callid, retval); |
| } |
| } |
| int main(int argc, char **argv) |
| { |
| printf(NAME ": HelenOS Keyboard service\n"); |
| ipcarg_t phonead; |
| /* Initialize arch dependent parts */ |
| if (kbd_arch_init()) |
| return -1; |
| /* Initialize key buffer */ |
| keybuffer_init(&keybuffer); |
| async_set_client_connection(console_connection); |
| async_set_interrupt_received(irq_handler); |
| /* Register service at nameserver */ |
| if (ipc_connect_to_me(PHONE_NS, SERVICE_KEYBOARD, 0, 0, &phonead) != 0) |
| return -1; |
| printf(NAME ": Accepting connections\n"); |
| async_manager(); |
| /* Never reached */ |
| return 0; |
| } |
| /** |
| * @} |
| */ |
| /branches/network/uspace/srv/kbd/generic/key_buffer.c |
|---|
| 0,0 → 1,113 |
| /* |
| * Copyright (c) 2006 Josef Cejka |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. |
| */ |
| /** @addtogroup kbdgen |
| * @brief HelenOS generic uspace keyboard handler. |
| * @ingroup kbd |
| * @{ |
| */ |
| /** @file |
| */ |
| #include <key_buffer.h> |
| #include <futex.h> |
| atomic_t keybuffer_futex = FUTEX_INITIALIZER; |
| /** Clear key buffer. |
| */ |
| void keybuffer_free(keybuffer_t *keybuffer) |
| { |
| futex_down(&keybuffer_futex); |
| keybuffer->head = 0; |
| keybuffer->tail = 0; |
| keybuffer->items = 0; |
| futex_up(&keybuffer_futex); |
| } |
| /** Key buffer initialization. |
| * |
| */ |
| void keybuffer_init(keybuffer_t *keybuffer) |
| { |
| keybuffer_free(keybuffer); |
| } |
| /** Get free space in buffer. |
| * This function is useful for processing some scancodes that are translated |
| * to more than one character. |
| * @return empty buffer space |
| */ |
| int keybuffer_available(keybuffer_t *keybuffer) |
| { |
| return KEYBUFFER_SIZE - keybuffer->items; |
| } |
| /** |
| * @return nonzero, if buffer is not empty. |
| */ |
| int keybuffer_empty(keybuffer_t *keybuffer) |
| { |
| return (keybuffer->items == 0); |
| } |
| /** Push key to key buffer. |
| * If buffer is full, character is ignored. |
| * @param key code of stored key |
| */ |
| void keybuffer_push(keybuffer_t *keybuffer, int key) |
| { |
| futex_down(&keybuffer_futex); |
| if (keybuffer->items < KEYBUFFER_SIZE) { |
| keybuffer->fifo[keybuffer->tail] = key; |
| keybuffer->tail = (keybuffer->tail + 1) % KEYBUFFER_SIZE; |
| keybuffer->items++; |
| } |
| futex_up(&keybuffer_futex); |
| } |
| /** Pop character from buffer. |
| * @param c pointer to space where to store character from buffer. |
| * @return zero on empty buffer, nonzero else |
| */ |
| int keybuffer_pop(keybuffer_t *keybuffer, int *c) |
| { |
| futex_down(&keybuffer_futex); |
| if (keybuffer->items > 0) { |
| keybuffer->items--; |
| *c = (keybuffer->fifo[keybuffer->head]) ; |
| keybuffer->head = (keybuffer->head + 1) % KEYBUFFER_SIZE; |
| futex_up(&keybuffer_futex); |
| return 1; |
| } |
| futex_up(&keybuffer_futex); |
| return 0; |
| } |
| /** |
| * @} |
| */ |