/tags/0.2.0.5/uspace/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; |
} |
/** |
* @} |
*/ |
/tags/0.2.0.5/uspace/kbd/generic/kbd.c |
---|
0,0 → 1,145 |
/* |
* 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(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_fast(iid, ELIMIT, 0, 0); |
return; |
} |
cons_connected = 1; |
ipc_answer_fast(iid, 0, 0, 0); |
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_fast(callid, 0,0,0); |
return; |
case IPC_M_CONNECT_TO_ME: |
if (phone2cons != -1) { |
retval = ELIMIT; |
break; |
} |
phone2cons = IPC_GET_ARG3(call); |
retval = 0; |
break; |
default: |
retval = EINVAL; |
} |
ipc_answer_fast(callid, retval, 0, 0); |
} |
} |
int main(int argc, char **argv) |
{ |
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, &phonead) != 0) |
return -1; |
async_manager(); |
/* Never reached */ |
return 0; |
} |
/** |
* @} |
*/ |