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  1. /*
  2.  * Copyright (c) 2006 Ondrej Palkovsky
  3.  * Copyright (c) 2008 Martin Decky
  4.  * All rights reserved.
  5.  *
  6.  * Redistribution and use in source and binary forms, with or without
  7.  * modification, are permitted provided that the following conditions
  8.  * are met:
  9.  *
  10.  * - Redistributions of source code must retain the above copyright
  11.  *   notice, this list of conditions and the following disclaimer.
  12.  * - Redistributions in binary form must reproduce the above copyright
  13.  *   notice, this list of conditions and the following disclaimer in the
  14.  *   documentation and/or other materials provided with the distribution.
  15.  * - The name of the author may not be used to endorse or promote products
  16.  *   derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28.  */
  29.  
  30. /** @defgroup msimfb MSIM text console
  31.  * @brief   HelenOS MSIM text console.
  32.  * @ingroup fbs
  33.  * @{
  34.  */
  35. /** @file
  36.  */
  37.  
  38. #include <async.h>
  39. #include <ipc/fb.h>
  40. #include <ipc/ipc.h>
  41. #include <libc.h>
  42. #include <errno.h>
  43. #include <string.h>
  44. #include <libc.h>
  45. #include <stdio.h>
  46. #include <ipc/fb.h>
  47. #include <sysinfo.h>
  48. #include <as.h>
  49. #include <align.h>
  50. #include <ddi.h>
  51.  
  52. #include "msim.h"
  53.  
  54. #define WIDTH 80
  55. #define HEIGHT 25
  56.  
  57. #define MAX_CONTROL 20
  58.  
  59. /* Allow only 1 connection */
  60. static int client_connected = 0;
  61.  
  62. static char *virt_addr;
  63.  
  64. static void msim_putc(const char c)
  65. {
  66.     *virt_addr = c;
  67. }
  68.  
  69. static void msim_puts(char *str)
  70. {
  71.     while (*str)
  72.         *virt_addr = *(str++);
  73. }
  74.  
  75. static void msim_clrscr(void)
  76. {
  77.     msim_puts("\033[2J");
  78. }
  79.  
  80. static void msim_goto(const unsigned int row, const unsigned int col)
  81. {
  82.     if ((row > HEIGHT) || (col > WIDTH))
  83.         return;
  84.    
  85.     char control[MAX_CONTROL];
  86.     snprintf(control, MAX_CONTROL, "\033[%u;%uf", row + 1, col + 1);
  87.     msim_puts(control);
  88. }
  89.  
  90. static void msim_set_style(const unsigned int mode)
  91. {
  92.     char control[MAX_CONTROL];
  93.     snprintf(control, MAX_CONTROL, "\033[%um", mode);
  94.     msim_puts(control);
  95. }
  96.  
  97. static void msim_cursor_disable(void)
  98. {
  99.     msim_puts("\033[?25l");
  100. }
  101.  
  102. static void msim_cursor_enable(void)
  103. {
  104.     msim_puts("\033[?25h");
  105. }
  106.  
  107. static void msim_scroll(int i)
  108. {
  109.     if (i > 0) {
  110.         msim_goto(HEIGHT - 1, 0);
  111.         while (i--)
  112.             msim_puts("\033D");
  113.     } else if (i < 0) {
  114.         msim_goto(0, 0);
  115.         while (i++)
  116.             msim_puts("\033M");
  117.     }
  118. }
  119.  
  120. static void msim_client_connection(ipc_callid_t iid, ipc_call_t *icall)
  121. {
  122.     int retval;
  123.     ipc_callid_t callid;
  124.     ipc_call_t call;
  125.     char c;
  126.     int lastcol = 0;
  127.     int lastrow = 0;
  128.     int newcol;
  129.     int newrow;
  130.     int fgcolor;
  131.     int bgcolor;
  132.     int i;
  133.  
  134.     if (client_connected) {
  135.         ipc_answer_0(iid, ELIMIT);
  136.         return;
  137.     }
  138.    
  139.     client_connected = 1;
  140.     ipc_answer_0(iid, EOK);
  141.    
  142.     while (true) {
  143.         callid = async_get_call(&call);
  144.         switch (IPC_GET_METHOD(call)) {
  145.         case IPC_M_PHONE_HUNGUP:
  146.             client_connected = 0;
  147.             ipc_answer_0(callid, EOK);
  148.             return;
  149.         case FB_PUTCHAR:
  150.             c = IPC_GET_ARG1(call);
  151.             newrow = IPC_GET_ARG2(call);
  152.             newcol = IPC_GET_ARG3(call);
  153.             if ((lastcol != newcol) || (lastrow != newrow))
  154.                 msim_goto(newrow, newcol);
  155.             lastcol = newcol + 1;
  156.             lastrow = newrow;
  157.             msim_putc(c);
  158.             retval = 0;
  159.             break;
  160.         case FB_CURSOR_GOTO:
  161.             newrow = IPC_GET_ARG1(call);
  162.             newcol = IPC_GET_ARG2(call);
  163.             msim_goto(newrow, newcol);
  164.             lastrow = newrow;
  165.             lastcol = newcol;
  166.             retval = 0;
  167.             break;
  168.         case FB_GET_CSIZE:
  169.             ipc_answer_2(callid, EOK, HEIGHT, WIDTH);
  170.             continue;
  171.         case FB_CLEAR:
  172.             msim_clrscr();
  173.             retval = 0;
  174.             break;
  175.         case FB_SET_STYLE:
  176.             fgcolor = IPC_GET_ARG1(call);
  177.             bgcolor = IPC_GET_ARG2(call);
  178.             if (fgcolor < bgcolor)
  179.                 msim_set_style(0);
  180.             else
  181.                 msim_set_style(7);
  182.             retval = 0;
  183.             break;
  184.         case FB_SCROLL:
  185.             i = IPC_GET_ARG1(call);
  186.             if ((i > HEIGHT) || (i < -HEIGHT)) {
  187.                 retval = EINVAL;
  188.                 break;
  189.             }
  190.             msim_scroll(i);
  191.             msim_goto(lastrow, lastcol);
  192.             retval = 0;
  193.             break;
  194.         case FB_CURSOR_VISIBILITY:
  195.             if(IPC_GET_ARG1(call))
  196.                 msim_cursor_enable();
  197.             else
  198.                 msim_cursor_disable();
  199.             retval = 0;
  200.             break;
  201.         default:
  202.             retval = ENOENT;
  203.         }
  204.         ipc_answer_0(callid, retval);
  205.     }
  206. }
  207.  
  208. int msim_init(void)
  209. {
  210.     void *phys_addr = (void *) sysinfo_value("fb.address.physical");
  211.     virt_addr = (char *) as_get_mappable_page(1);
  212.    
  213.     physmem_map(phys_addr, virt_addr, 1, AS_AREA_READ | AS_AREA_WRITE);
  214.    
  215.     async_set_client_connection(msim_client_connection);
  216.  
  217.     /* Clear the terminal, set scrolling region
  218.        to 0 - 25 lines */
  219.     msim_clrscr();
  220.     msim_goto(0, 0);
  221.     msim_puts("\033[0;25r");
  222.  
  223.     return 0;
  224. }
  225.  
  226. /**
  227.  * @}
  228.  */
  229.