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  1. /*
  2.  * Copyright (c) 2006 Ondrej Palkovsky
  3.  * Copyright (c) 2008 Martin Decky
  4.  * Copyright (c) 2008 Pavel Rimsky
  5.  * All rights reserved.
  6.  *
  7.  * Redistribution and use in source and binary forms, with or without
  8.  * modification, are permitted provided that the following conditions
  9.  * are met:
  10.  *
  11.  * - Redistributions of source code must retain the above copyright
  12.  *   notice, this list of conditions and the following disclaimer.
  13.  * - Redistributions in binary form must reproduce the above copyright
  14.  *   notice, this list of conditions and the following disclaimer in the
  15.  *   documentation and/or other materials provided with the distribution.
  16.  * - The name of the author may not be used to endorse or promote products
  17.  *   derived from this software without specific prior written permission.
  18.  *
  19.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29.  */
  30.  
  31. /**
  32.  * @defgroup serial Serial console
  33.  * @brief    Serial console services (putc, puts, clear screen, cursor goto,...)
  34.  * @{
  35.  */
  36.  
  37. /** @file
  38.  */
  39.  
  40. #include <stdio.h>
  41. #include <ipc/ipc.h>
  42. #include <async.h>
  43. #include <ipc/fb.h>
  44. #include <bool.h>
  45. #include <errno.h>
  46.  
  47. #include "serial_console.h"
  48.  
  49. #define MAX_CONTROL 20
  50.  
  51. static int width;
  52. static int height;
  53. static putc_function_t putc_function;
  54.  
  55. /* Allow only 1 connection */
  56. static int client_connected = 0;
  57.  
  58. void serial_puts(char *str)
  59. {
  60.     while (*str)
  61.         putc_function(*(str++));
  62. }
  63.  
  64. void serial_goto(const unsigned int row, const unsigned int col)
  65. {
  66.     if ((row > height) || (col > width))
  67.         return;
  68.    
  69.     char control[20];
  70.     snprintf(control, 20, "\033[%u;%uf", row + 1, col + 1);
  71.     serial_puts(control);
  72. }
  73.  
  74. void serial_clrscr(void)
  75. {
  76.     serial_puts("\033[2J");
  77. }
  78.  
  79. void serial_scroll(int i)
  80. {
  81.     if (i > 0) {
  82.         serial_goto(height - 1, 0);
  83.         while (i--)
  84.             serial_puts("\033D");
  85.     } else if (i < 0) {
  86.         serial_goto(0, 0);
  87.         while (i++)
  88.             serial_puts("\033M");
  89.     }
  90. }
  91.  
  92. void serial_set_style(const unsigned int mode)
  93. {
  94.     char control[MAX_CONTROL];
  95.     snprintf(control, MAX_CONTROL, "\033[%um", mode);
  96.     serial_puts(control);
  97. }
  98.  
  99. /** Set scrolling region. */
  100. void serial_set_scroll_region(unsigned last_row)
  101. {
  102.     char control[MAX_CONTROL];
  103.     snprintf(control, MAX_CONTROL, "\033[0;%ur", last_row);
  104.     serial_puts(control);
  105. }
  106.  
  107. void serial_cursor_disable(void)
  108. {
  109.     serial_puts("\033[?25l");
  110. }
  111.  
  112. void serial_cursor_enable(void)
  113. {
  114.     serial_puts("\033[?25h");
  115. }
  116.  
  117. void serial_console_init(putc_function_t putc_fn, uint32_t w, uint32_t h)
  118. {
  119.     width = w;
  120.     height = h;
  121.     putc_function = putc_fn;
  122. }
  123.  
  124. /**
  125.  * Main function of the thread serving client connections.
  126.  */
  127. void serial_client_connection(ipc_callid_t iid, ipc_call_t *icall)
  128. {
  129.     int retval;
  130.     ipc_callid_t callid;
  131.     ipc_call_t call;
  132.     char c;
  133.     int lastcol = 0;
  134.     int lastrow = 0;
  135.     int newcol;
  136.     int newrow;
  137.     int fgcolor;
  138.     int bgcolor;
  139.     int i;
  140.    
  141.     if (client_connected) {
  142.         ipc_answer_0(iid, ELIMIT);
  143.         return;
  144.     }
  145.    
  146.     client_connected = 1;
  147.     ipc_answer_0(iid, EOK);
  148.    
  149.     /* Clear the terminal, set scrolling region
  150.        to 0 - height rows. */
  151.     serial_clrscr();
  152.     serial_goto(0, 0);
  153.     serial_set_scroll_region(height);
  154.    
  155.     while (true) {
  156.         callid = async_get_call(&call);
  157.         switch (IPC_GET_METHOD(call)) {
  158.         case IPC_M_PHONE_HUNGUP:
  159.             client_connected = 0;
  160.             ipc_answer_0(callid, EOK);
  161.             return;
  162.         case FB_PUTCHAR:
  163.             c = IPC_GET_ARG1(call);
  164.             newrow = IPC_GET_ARG2(call);
  165.             newcol = IPC_GET_ARG3(call);
  166.             if ((lastcol != newcol) || (lastrow != newrow))
  167.                 serial_goto(newrow, newcol);
  168.             lastcol = newcol + 1;
  169.             lastrow = newrow;
  170.             (*putc_function)(c);
  171.             retval = 0;
  172.             break;
  173.         case FB_CURSOR_GOTO:
  174.             newrow = IPC_GET_ARG1(call);
  175.             newcol = IPC_GET_ARG2(call);
  176.             serial_goto(newrow, newcol);
  177.             lastrow = newrow;
  178.             lastcol = newcol;
  179.             retval = 0;
  180.             break;
  181.         case FB_GET_CSIZE:
  182.             ipc_answer_2(callid, EOK, height, width);
  183.             continue;
  184.         case FB_CLEAR:
  185.             serial_clrscr();
  186.             retval = 0;
  187.             break;
  188.         case FB_SET_STYLE:
  189.             fgcolor = IPC_GET_ARG1(call);
  190.             bgcolor = IPC_GET_ARG2(call);
  191.             if (fgcolor < bgcolor)
  192.                 serial_set_style(0);
  193.             else
  194.                 serial_set_style(7);
  195.             retval = 0;
  196.             break;
  197.         case FB_SCROLL:
  198.             i = IPC_GET_ARG1(call);
  199.             if ((i > height) || (i < -height)) {
  200.                 retval = EINVAL;
  201.                 break;
  202.             }
  203.             serial_scroll(i);
  204.             serial_goto(lastrow, lastcol);
  205.             retval = 0;
  206.             break;
  207.         case FB_CURSOR_VISIBILITY:
  208.             if(IPC_GET_ARG1(call))
  209.                 serial_cursor_enable();
  210.             else
  211.                 serial_cursor_disable();
  212.             retval = 0;
  213.             break;
  214.         default:
  215.             retval = ENOENT;
  216.         }
  217.         ipc_answer_0(callid, retval);
  218.     }
  219. }
  220.  
  221. /**
  222.  * @}
  223.  */
  224.