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3582 rimsky 1
/*
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 * Copyright (c) 2006 Ondrej Palkovsky
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 * Copyright (c) 2008 Martin Decky
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 * Copyright (c) 2008 Pavel Rimsky
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/**
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 * @defgroup serial Serial console
3618 rimsky 33
 * @brief    Serial console services (putc, puts, clear screen, cursor goto,...)
3582 rimsky 34
 * @{
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 */ 
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/** @file
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 */
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#include <stdio.h>
3742 rimsky 41
#include <ipc/ipc.h>
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#include <async.h>
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#include <ipc/fb.h>
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#include <bool.h>
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#include <errno.h>
3582 rimsky 46
 
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#include "serial_console.h"
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#define MAX_CONTROL 20
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3742 rimsky 51
static int width;
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static int height;
3582 rimsky 53
static putc_function_t putc_function;
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3742 rimsky 55
/* Allow only 1 connection */
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static int client_connected = 0;
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3582 rimsky 58
void serial_puts(char *str)
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{
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	while (*str)
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		putc_function(*(str++));
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}
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void serial_goto(const unsigned int row, const unsigned int col)
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{
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	if ((row > height) || (col > width))
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		return;
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	char control[20];
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	snprintf(control, 20, "\033[%u;%uf", row + 1, col + 1);
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	serial_puts(control);
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}
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void serial_clrscr(void)
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{
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	serial_puts("\033[2J");
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}
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void serial_scroll(int i)
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{
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	if (i > 0) {
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		serial_goto(height - 1, 0);
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		while (i--)
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			serial_puts("\033D");
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	} else if (i < 0) {
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		serial_goto(0, 0);
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		while (i++)
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			serial_puts("\033M");
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	}
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}
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void serial_set_style(const unsigned int mode)
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{
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	char control[MAX_CONTROL];
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	snprintf(control, MAX_CONTROL, "\033[%um", mode);
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	serial_puts(control);
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}
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3742 rimsky 99
/** Set scrolling region. */
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void serial_set_scroll_region(unsigned last_row)
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{
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	char control[MAX_CONTROL];
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	snprintf(control, MAX_CONTROL, "\033[0;%ur", last_row);
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	serial_puts(control);
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}
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3582 rimsky 107
void serial_cursor_disable(void)
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{
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	serial_puts("\033[?25l");
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}
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void serial_cursor_enable(void)
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{
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	serial_puts("\033[?25h");
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}
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void serial_console_init(putc_function_t putc_fn, uint32_t w, uint32_t h)
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{
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	width = w;
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	height = h;
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	putc_function = putc_fn;
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}
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3742 rimsky 124
/**
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 * Main function of the thread serving client connections.
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 */
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void serial_client_connection(ipc_callid_t iid, ipc_call_t *icall)
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{
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	int retval;
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	ipc_callid_t callid;
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	ipc_call_t call;
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	char c;
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	int lastcol = 0;
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	int lastrow = 0;
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	int newcol;
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	int newrow;
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	int fgcolor;
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	int bgcolor;
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	int i;
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	if (client_connected) {
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		ipc_answer_0(iid, ELIMIT);
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		return;
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	}
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	client_connected = 1;
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	ipc_answer_0(iid, EOK);
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	/* Clear the terminal, set scrolling region
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	   to 0 - height rows. */
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	serial_clrscr();
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	serial_goto(0, 0);
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	serial_set_scroll_region(height);
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	while (true) {
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		callid = async_get_call(&call);
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		switch (IPC_GET_METHOD(call)) {
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		case IPC_M_PHONE_HUNGUP:
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			client_connected = 0;
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			ipc_answer_0(callid, EOK);
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			return;
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		case FB_PUTCHAR:
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			c = IPC_GET_ARG1(call);
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			newrow = IPC_GET_ARG2(call);
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			newcol = IPC_GET_ARG3(call);
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			if ((lastcol != newcol) || (lastrow != newrow))
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				serial_goto(newrow, newcol);
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			lastcol = newcol + 1;
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			lastrow = newrow;
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			(*putc_function)(c);
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			retval = 0;
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			break;
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		case FB_CURSOR_GOTO:
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			newrow = IPC_GET_ARG1(call);
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			newcol = IPC_GET_ARG2(call);
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			serial_goto(newrow, newcol);
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			lastrow = newrow;
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			lastcol = newcol;
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			retval = 0;
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			break;
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		case FB_GET_CSIZE:
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			ipc_answer_2(callid, EOK, height, width);
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			continue;
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		case FB_CLEAR:
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			serial_clrscr();
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			retval = 0;
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			break;
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		case FB_SET_STYLE:
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			fgcolor = IPC_GET_ARG1(call);
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			bgcolor = IPC_GET_ARG2(call);
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			if (fgcolor < bgcolor)
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				serial_set_style(0);
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			else
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				serial_set_style(7);
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			retval = 0;
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			break;
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		case FB_SCROLL:
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			i = IPC_GET_ARG1(call);
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			if ((i > height) || (i < -height)) {
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				retval = EINVAL;
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				break;
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			}
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			serial_scroll(i);
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			serial_goto(lastrow, lastcol);
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			retval = 0;
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			break;
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		case FB_CURSOR_VISIBILITY:
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			if(IPC_GET_ARG1(call))
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				serial_cursor_enable();
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			else
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				serial_cursor_disable();
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			retval = 0;
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			break;
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		default:
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			retval = ENOENT;
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		}
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		ipc_answer_0(callid, retval);
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	}
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}
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3582 rimsky 221
/** 
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 * @}
3618 rimsky 223
 */