/*
* 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.
*/
#include <kbd.h>
#include <fb.h>
#include <ipc/ipc.h>
#include <ipc/fb.h>
#include <ipc/services.h>
#include <errno.h>
#include <key_buffer.h>
#include <console.h>
#include <unistd.h>
#include <async.h>
#include <libadt/fifo.h>
#include <screenbuffer.h>
#define CONSOLE_COUNT 8
#define MAX_KEYREQUESTS_BUFFERED 32
#define NAME "CONSOLE"
int active_console = 1;
struct {
int phone; /**< Framebuffer phone */
int rows; /**< Framebuffer rows */
int cols; /**< Framebuffer columns */
} fb_info;
typedef struct {
keybuffer_t keybuffer;
FIFO_CREATE_STATIC(keyrequests, ipc_callid_t , MAX_KEYREQUESTS_BUFFERED);
int keyrequest_counter;
int client_phone;
int used;
screenbuffer_t screenbuffer;
} connection_t;
connection_t connections[CONSOLE_COUNT];
static int find_free_connection()
{
int i = 0;
while (i < CONSOLE_COUNT) {
if (connections[i].used == 0)
return i;
++i;
}
return CONSOLE_COUNT;
}
static int find_connection(int client_phone)
{
int i = 0;
while (i < CONSOLE_COUNT) {
if (connections[i].client_phone == client_phone)
return i;
++i;
}
return CONSOLE_COUNT;
}
/* Handler for keyboard */
static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
{
ipc_callid_t callid;
ipc_call_t call;
int retval;
int i, j;
char c,d;
connection_t *conn;
/* Ignore parameters, the connection is alread opened */
while (1) {
callid = async_get_call(&call);
switch (IPC_GET_METHOD(call)) {
case IPC_M_PHONE_HUNGUP:
ipc_answer_fast(callid,0,0,0);
/* TODO: Handle hangup */
return;
case KBD_PUSHCHAR:
/* got key from keyboard driver */
retval = 0;
c = IPC_GET_ARG1(call);
/* switch to another virtual console */
conn = &connections[active_console];
if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 + CONSOLE_COUNT)) {
/*FIXME: draw another console content from buffer */
active_console = c - KBD_KEY_F1;
conn = &connections[active_console];
ipc_call_async(fb_info.phone, FB_CURSOR_VISIBILITY, 0, NULL, NULL);
ipc_call_async_2(fb_info.phone, FB_CLEAR, 0, 0, NULL, NULL);
for (i = 0; i < conn->screenbuffer.size_x; i++)
for (j = 0; j < conn->screenbuffer.size_y; j++) {
d = get_field_at(&(conn->screenbuffer),i, j)->character;
if (d && d != ' ')
ipc_call_async_3(fb_info.phone, FB_PUTCHAR, d, j, i, NULL, NULL);
}
ipc_call_async_2(fb_info.phone, FB_CURSOR_GOTO, conn->screenbuffer.position_y, conn->screenbuffer.position_x, NULL, NULL);
ipc_call_async(fb_info.phone, FB_CURSOR_VISIBILITY, 1, NULL, NULL);
break;
}
/* if client is awaiting key, send it */
if (conn->keyrequest_counter > 0) {
conn->keyrequest_counter--;
ipc_answer_fast(fifo_pop(conn->keyrequests), 0, c, 0);
break;
}
/*FIXME: else store key to its buffer */
keybuffer_push(&conn->keybuffer, c);
break;
default:
retval = ENOENT;
}
ipc_answer_fast(callid, retval, 0, 0);
}
}
/** Default thread for new connections */
void client_connection(ipc_callid_t iid, ipc_call_t *icall)
{
ipc_callid_t callid;
ipc_call_t call;
int consnum;
ipcarg_t arg1;
if ((consnum = find_free_connection()) == CONSOLE_COUNT) {
ipc_answer_fast(iid,ELIMIT,0,0);
return;
}
connections[consnum].used = 1;
connections[consnum].client_phone = IPC_GET_ARG3(call);
screenbuffer_clear(&(connections[consnum].screenbuffer));
/* Accept the connection */
ipc_answer_fast(iid,0,0,0);
while (1) {
callid = async_get_call(&call);
switch (IPC_GET_METHOD(call)) {
case IPC_M_PHONE_HUNGUP:
/* TODO */
ipc_answer_fast(callid, 0,0,0);
return;
case CONSOLE_PUTCHAR:
/* Send message to fb */
if (consnum == active_console) {
ipc_call_async_3(fb_info.phone, FB_PUTCHAR, IPC_GET_ARG2(call), connections[consnum].screenbuffer.position_y, \
connections[consnum].screenbuffer.position_x, NULL, NULL);
}
screenbuffer_putchar(&(connections[consnum].screenbuffer), IPC_GET_ARG2(call));
break;
case CONSOLE_CLEAR:
/* Send message to fb */
if (consnum == active_console) {
ipc_call_async_2(fb_info.phone, FB_CLEAR, 0, 0, NULL, NULL);
}
screenbuffer_clear(&(connections[consnum].screenbuffer));
break;
case CONSOLE_GOTO:
screenbuffer_goto(&(connections[consnum].screenbuffer), IPC_GET_ARG1(call), IPC_GET_ARG2(call));
break;
case CONSOLE_GETCHAR:
if (keybuffer_empty(&(connections[consnum].keybuffer))) {
/* buffer is empty -> store request */
if (connections[consnum].keyrequest_counter < MAX_KEYREQUESTS_BUFFERED) {
fifo_push(connections[consnum].keyrequests, callid);
connections[consnum].keyrequest_counter++;
} else {
/* no key available and too many requests => fail */
ipc_answer_fast(callid, ELIMIT, 0, 0);
}
continue;
};
keybuffer_pop(&(connections[consnum].keybuffer), (char *)&arg1);
break;
}
ipc_answer_fast(callid, 0, arg1, 0);
}
}
int main(int argc, char *argv[])
{
ipcarg_t phonehash;
int kbd_phone, fb_phone;
ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
int i;
/* Connect to keyboard driver */
while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
usleep(10000);
};
if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0) {
return -1;
};
async_new_connection(phonehash, 0, NULL, keyboard_events);
/* Connect to framebuffer driver */
while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
usleep(10000);
}
ipc_call_sync_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows), &(fb_info.cols));
ipc_call_sync(fb_info.phone, FB_CURSOR_VISIBILITY, 1, NULL);
/* Init virtual consoles */
for (i = 0; i < CONSOLE_COUNT; i++) {
connections[i].used = 0;
keybuffer_init(&(connections[i].keybuffer));
connections[i].keyrequests.head = connections[i].keyrequests.tail = 0;
connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
connections[i].keyrequest_counter = 0;
if (screenbuffer_init(&(connections[i].screenbuffer), fb_info.cols, fb_info.rows ) == NULL) {
/*FIXME: handle error */
return -1;
}
}
if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
return -1;
};
async_manager();
return 0;
}