/*
* Copyright (c) 2006 Josef Cejka
* Copyright (c) 2006 Jakub Vana
* Copyright (c) 2008 Jiri Svoboda
* 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 libc
* @{
*/
/** @file
*/
#include <libc.h>
#include <async.h>
#include <io/stream.h>
#include <ipc/console.h>
#include <ipc/services.h>
#include <errno.h>
#include <string.h>
#include <console.h>
static int console_phone = -1;
/** Size of cbuffer. */
#define CBUFFER_SIZE 256
/** Buffer for writing characters to the console. */
static char cbuffer[CBUFFER_SIZE];
/** Pointer to end of cbuffer. */
static char *cbuffer_end = cbuffer + CBUFFER_SIZE;
/** Pointer to first available field in cbuffer. */
static char *cbp = cbuffer;
/** Write one character to the console via IPC. */
static void cons_putchar(wchar_t c)
{
console_wait();
async_msg_1(console_phone, CONSOLE_PUTCHAR, c);
}
/** Write characters to the console via IPC or to klog */
static ssize_t cons_write(const char *buf, size_t size)
{
console_open(false);
if (console_phone >= 0) {
async_serialize_start();
ipc_call_t answer;
aid_t req = async_send_0(console_phone, CONSOLE_WRITE, &answer);
ipcarg_t rc = ipc_data_write_start(console_phone, (void *) buf, size);
if (rc != EOK) {
async_wait_for(req, NULL);
async_serialize_end();
return (ssize_t) rc;
}
async_wait_for(req, &rc);
async_serialize_end();
if (rc == EOK)
return (ssize_t) IPC_GET_ARG1(answer);
else
return -1;
} else
return __SYSCALL3(SYS_KLOG, 1, (sysarg_t) buf, size);
}
/** Write all data from output buffer to the console. */
static void cbuffer_flush(void)
{
size_t len = cbp - cbuffer;
while (len > 0) {
ssize_t rc = cons_write(cbuffer, cbp - cbuffer);
if (rc < 0)
return;
len -= rc;
}
cbp = cbuffer;
}
/** Drop all data in console output buffer. */
static void cbuffer_drain(void)
{
cbp = cbuffer;
}
/** Write one character to the output buffer. */
static inline void cbuffer_putc(char c)
{
if (cbp == cbuffer_end)
cbuffer_flush();
*cbp++ = c;
if (c == '\n')
cbuffer_flush();
}
int console_open(bool blocking)
{
if (console_phone < 0) {
int phone;
if (blocking)
phone = ipc_connect_me_to_blocking(PHONE_NS,
SERVICE_CONSOLE, 0, 0);
else
phone = ipc_connect_me_to(PHONE_NS,
SERVICE_CONSOLE, 0, 0);
if (phone >= 0)
console_phone = phone;
}
return console_phone;
}
void console_close(void)
{
if (console_phone >= 0) {
if (ipc_hangup(console_phone) == 0)
console_phone = -1;
}
}
void console_wait(void)
{
while (console_phone < 0)
console_open(true);
}
void console_clear(void)
{
console_wait();
cbuffer_drain();
async_msg_0(console_phone, CONSOLE_CLEAR);
}
int console_get_size(int *rows, int *cols)
{
console_wait();
ipcarg_t r;
ipcarg_t c;
int rc = async_req_0_2(console_phone, CONSOLE_GETSIZE, &r, &c);
*rows = (int) r;
*cols = (int) c;
return rc;
}
void console_set_style(int style)
{
console_wait();
cbuffer_flush();
async_msg_1(console_phone, CONSOLE_SET_STYLE, style);
}
void console_set_color(int fg_color, int bg_color, int flags)
{
console_wait();
cbuffer_flush();
async_msg_3(console_phone, CONSOLE_SET_COLOR, fg_color, bg_color, flags);
}
void console_set_rgb_color(int fg_color, int bg_color)
{
console_wait();
cbuffer_flush();
async_msg_2(console_phone, CONSOLE_SET_RGB_COLOR, fg_color, bg_color);
}
void console_cursor_visibility(int show)
{
console_wait();
cbuffer_flush();
async_msg_1(console_phone, CONSOLE_CURSOR_VISIBILITY, show != 0);
}
void console_kcon_enable(void)
{
console_wait();
cbuffer_flush();
async_msg_0(console_phone, CONSOLE_KCON_ENABLE);
}
void console_goto(int row, int col)
{
console_wait();
cbuffer_flush();
async_msg_2(console_phone, CONSOLE_GOTO, row, col);
}
void console_putchar(wchar_t c)
{
console_wait();
cbuffer_flush();
cons_putchar(c);
}
/** Write characters to the console. */
ssize_t console_write(const char *buf, size_t size)
{
size_t left = size;
while (left > 0) {
cbuffer_putc(*buf++);
left--;
}
return size;
}
/** Write a NULL-terminated string to the console. */
void console_putstr(const char *str)
{
size_t left = str_size(str);
while (left > 0) {
ssize_t rc = console_write(str, left);
if (rc < 0) {
/* Error */
return;
}
str += rc;
left -= rc;
}
}
/** Flush all output to the console or klog. */
void console_flush(void)
{
cbuffer_flush();
if (console_phone >= 0)
async_msg_0(console_phone, CONSOLE_FLUSH);
}
/** @}
*/