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  1. /*
  2.  * Copyright (C) 2006 Josef Cejka
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29.  
  30. #include <kbd.h>
  31. #include <fb.h>
  32. #include <ipc/ipc.h>
  33. #include <ipc/fb.h>
  34. #include <ipc/services.h>
  35. #include <errno.h>
  36. #include <key_buffer.h>
  37. #include <console.h>
  38. #include <unistd.h>
  39. #include <async.h>
  40. #include <libadt/fifo.h>
  41. #include <screenbuffer.h>
  42. #include <sys/mman.h>
  43.  
  44. #define CONSOLE_COUNT 12
  45. #define MAX_KEYREQUESTS_BUFFERED 32
  46.  
  47. #define NAME "CONSOLE"
  48.  
  49. int active_console = 0;
  50.  
  51. struct {
  52.     int phone;      /**< Framebuffer phone */
  53.     ipcarg_t rows;      /**< Framebuffer rows */
  54.     ipcarg_t cols;      /**< Framebuffer columns */
  55. } fb_info;
  56.  
  57. typedef struct {
  58.     keybuffer_t keybuffer;
  59.     FIFO_CREATE_STATIC(keyrequests, ipc_callid_t , MAX_KEYREQUESTS_BUFFERED);
  60.     int keyrequest_counter;
  61.     int client_phone;
  62.     int used;
  63.     screenbuffer_t screenbuffer;
  64. } connection_t;
  65.  
  66.  
  67.  
  68. connection_t connections[CONSOLE_COUNT];
  69. keyfield_t *interbuffer = NULL;
  70.    
  71. static int find_free_connection()
  72. {
  73.     int i = 0;
  74.    
  75.     while (i < CONSOLE_COUNT) {
  76.         if (connections[i].used == 0)
  77.             return i;
  78.         ++i;
  79.     }
  80.     return CONSOLE_COUNT;
  81. }
  82.  
  83.  
  84. static int find_connection(int client_phone)
  85. {
  86.     int i = 0;
  87.    
  88.     while (i < CONSOLE_COUNT) {
  89.         if (connections[i].client_phone == client_phone)
  90.             return i;
  91.         ++i;
  92.     }
  93.     return  CONSOLE_COUNT;
  94. }
  95.  
  96. /** Check key and process special keys.
  97.  *
  98.  * */
  99. static void write_char(int console, char key)
  100. {
  101.     screenbuffer_t *scr = &(connections[console].screenbuffer);
  102.    
  103.     switch (key) {
  104.         case '\n':
  105.             scr->position_y += 1;
  106.             scr->position_x =  0;
  107.             break;
  108.         case '\r':
  109.             break;
  110.         case '\t':
  111.             scr->position_x += 8;
  112.             scr->position_x -= scr->position_x % 8;
  113.             break;
  114.         case '\b':
  115.             if (scr->position_x == 0)
  116.                 break;
  117.  
  118.             scr->position_x--;
  119.  
  120.             if (console == active_console) {
  121.                 ipc_call_async_3(fb_info.phone, FB_PUTCHAR, ' ', scr->position_y, scr->position_x, NULL, NULL);
  122.             }
  123.    
  124.             screenbuffer_putchar(scr, ' ');
  125.            
  126.             break;
  127.         default:   
  128.             if (console == active_console) {
  129.                 ipc_call_async_3(fb_info.phone, FB_PUTCHAR, key, scr->position_y, scr->position_x, NULL, NULL);
  130.             }
  131.    
  132.             screenbuffer_putchar(scr, key);
  133.             scr->position_x++;
  134.     }
  135.    
  136.     scr->position_y += (scr->position_x >= scr->size_x);
  137.    
  138.     if (scr->position_y >= scr->size_y) {
  139.         scr->position_y = scr->size_y - 1;
  140.         screenbuffer_clear_line(scr, scr->top_line++);
  141.         ipc_call_async(fb_info.phone, FB_SCROLL, 1, NULL, NULL);
  142.     }
  143.    
  144.     scr->position_x = scr->position_x % scr->size_x;
  145.    
  146.     if (console == active_console) 
  147.         ipc_call_async_2(fb_info.phone, FB_CURSOR_GOTO, scr->position_y, scr->position_x, NULL, NULL);
  148.    
  149. }
  150.  
  151.  
  152. /* Handler for keyboard */
  153. static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
  154. {
  155.     ipc_callid_t callid;
  156.     ipc_call_t call;
  157.     int retval;
  158.     int i, j;
  159.     char c,d;
  160.     connection_t *conn;
  161.    
  162.     /* Ignore parameters, the connection is alread opened */
  163.     while (1) {
  164.         callid = async_get_call(&call);
  165.         switch (IPC_GET_METHOD(call)) {
  166.         case IPC_M_PHONE_HUNGUP:
  167.             ipc_answer_fast(callid,0,0,0);
  168.             /* TODO: Handle hangup */
  169.             return;
  170.         case KBD_PUSHCHAR:
  171.             /* got key from keyboard driver */
  172.            
  173.             retval = 0;
  174.             c = IPC_GET_ARG1(call) - '0';
  175.             /* switch to another virtual console */
  176.            
  177.             conn = &connections[active_console];
  178. //          if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 + CONSOLE_COUNT)) {
  179.             if ((c >= 0) && (c < CONSOLE_COUNT)) {
  180.                 /*FIXME: draw another console content from buffer */
  181.                 if (c == active_console)
  182.                         break;
  183.                
  184.                 if (c == 0) {
  185.                     /* switch to kernel console*/
  186.                      __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
  187.                      
  188.                 } else {
  189.                     active_console = c;
  190.                 }
  191.                
  192.                
  193.                 conn = &connections[active_console];
  194.  
  195.                 ipc_call_async(fb_info.phone, FB_CURSOR_VISIBILITY, 0, NULL, NULL);
  196.        
  197.                 if (interbuffer) {
  198.                     for (i = 0; i < conn->screenbuffer.size_x; i++)
  199.                         for (j = 0; j < conn->screenbuffer.size_y; j++)
  200.                             interbuffer[i + j*conn->screenbuffer.size_x] = *get_field_at(&(conn->screenbuffer),i, j);
  201.                            
  202.                     sync_send_2(fb_info.phone, FB_DRAW_TEXT_DATA, 0, 0, NULL, NULL);       
  203.                 } else {
  204.  
  205.                     ipc_call_async_2(fb_info.phone, FB_CLEAR, 0, 0, NULL, NULL);
  206.                
  207.                    
  208.                     for (i = 0; i < conn->screenbuffer.size_x; i++)
  209.                         for (j = 0; j < conn->screenbuffer.size_y; j++) {
  210.                             d = get_field_at(&(conn->screenbuffer),i, j)->character;
  211.                             if (d && d != ' ')
  212.                                 ipc_call_async_3(fb_info.phone, FB_PUTCHAR, d, j, i, NULL, NULL);
  213.                         }
  214.  
  215.                 }
  216.                 ipc_call_async_2(fb_info.phone, FB_CURSOR_GOTO, conn->screenbuffer.position_y, conn->screenbuffer.position_x, NULL, NULL);
  217.                 ipc_call_async_2(fb_info.phone, FB_SET_STYLE, conn->screenbuffer.style.fg_color, \
  218.                         conn->screenbuffer.style.bg_color, NULL, NULL);
  219.                 ipc_call_async(fb_info.phone, FB_CURSOR_VISIBILITY, 1, NULL, NULL);
  220.  
  221.                 break;
  222.             }
  223.            
  224.             /* if client is awaiting key, send it */
  225.             if (conn->keyrequest_counter > 0) {    
  226.                 conn->keyrequest_counter--;
  227.                 ipc_answer_fast(fifo_pop(conn->keyrequests), 0, c, 0);
  228.                 break;
  229.             }
  230.            
  231.             /*FIXME: else store key to its buffer */
  232.             keybuffer_push(&conn->keybuffer, c);
  233.            
  234.             break;
  235.         default:
  236.             retval = ENOENT;
  237.         }      
  238.         ipc_answer_fast(callid, retval, 0, 0);
  239.     }
  240. }
  241.  
  242. /** Default thread for new connections */
  243. void client_connection(ipc_callid_t iid, ipc_call_t *icall)
  244. {
  245.     ipc_callid_t callid;
  246.     ipc_call_t call;
  247.     int consnum;
  248.     ipcarg_t arg1;
  249.  
  250.     if ((consnum = find_free_connection()) == CONSOLE_COUNT) {
  251.         ipc_answer_fast(iid,ELIMIT,0,0);
  252.         return;
  253.     }
  254.  
  255.     connections[consnum].used = 1;
  256.     connections[consnum].client_phone = IPC_GET_ARG3(call);
  257.     screenbuffer_clear(&(connections[consnum].screenbuffer));
  258.    
  259.     /* Accept the connection */
  260.     ipc_answer_fast(iid,0,0,0);
  261.    
  262.     while (1) {
  263.         callid = async_get_call(&call);
  264.         switch (IPC_GET_METHOD(call)) {
  265.         case IPC_M_PHONE_HUNGUP:
  266.             /* TODO */
  267.             ipc_answer_fast(callid, 0,0,0);
  268.             return;
  269.         case CONSOLE_PUTCHAR:
  270.             write_char(consnum, IPC_GET_ARG1(call));
  271.             break;
  272.         case CONSOLE_CLEAR:
  273.             /* Send message to fb */
  274.             if (consnum == active_console) {
  275.                 ipc_call_async_2(fb_info.phone, FB_CLEAR, 0, 0, NULL, NULL);
  276.             }
  277.            
  278.             screenbuffer_clear(&(connections[consnum].screenbuffer));
  279.            
  280.             break;
  281.         case CONSOLE_GOTO:
  282.            
  283.             screenbuffer_goto(&(connections[consnum].screenbuffer), IPC_GET_ARG1(call), IPC_GET_ARG2(call));
  284.            
  285.             break;
  286.  
  287.         case CONSOLE_GETCHAR:
  288.             if (keybuffer_empty(&(connections[consnum].keybuffer))) {
  289.                 /* buffer is empty -> store request */
  290.                 if (connections[consnum].keyrequest_counter < MAX_KEYREQUESTS_BUFFERED) {      
  291.                     fifo_push(connections[consnum].keyrequests, callid);
  292.                     connections[consnum].keyrequest_counter++;
  293.                 } else {
  294.                     /* no key available and too many requests => fail */
  295.                     ipc_answer_fast(callid, ELIMIT, 0, 0);
  296.                 }
  297.                 continue;
  298.             };
  299.             keybuffer_pop(&(connections[consnum].keybuffer), (char *)&arg1);
  300.            
  301.             break;
  302.         }
  303.         ipc_answer_fast(callid, 0, arg1, 0);
  304.     }
  305. }
  306.  
  307. int main(int argc, char *argv[])
  308. {
  309.     ipcarg_t phonehash;
  310.     int kbd_phone, fb_phone;
  311.     ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
  312.     int i;
  313.  
  314.     async_set_client_connection(client_connection);
  315.    
  316.     /* Connect to keyboard driver */
  317.  
  318.     while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
  319.         usleep(10000);
  320.     };
  321.    
  322.     if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0) {
  323.         return -1;
  324.     };
  325.  
  326.     /* Connect to framebuffer driver */
  327.    
  328.     while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
  329.         usleep(10000);
  330.     }
  331.    
  332.     ipc_call_sync_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows), &(fb_info.cols));
  333.     ipc_call_async_2(fb_info.phone, FB_SET_STYLE, DEFAULT_FOREGROUND_COLOR, DEFAULT_BACKGROUND_COLOR, NULL, NULL);
  334.     ipc_call_sync(fb_info.phone, FB_CURSOR_VISIBILITY, 1, NULL);
  335.    
  336.     /* Init virtual consoles */
  337.     for (i = 0; i < CONSOLE_COUNT; i++) {
  338.         connections[i].used = 0;
  339.         keybuffer_init(&(connections[i].keybuffer));
  340.        
  341.         connections[i].keyrequests.head = connections[i].keyrequests.tail = 0;
  342.         connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
  343.         connections[i].keyrequest_counter = 0;
  344.        
  345.         if (screenbuffer_init(&(connections[i].screenbuffer), fb_info.cols, fb_info.rows ) == NULL) {
  346.             /*FIXME: handle error */
  347.             return -1;
  348.         }
  349.     }
  350.    
  351.     if ((interbuffer = mmap(NULL, sizeof(keyfield_t) * fb_info.cols * fb_info.rows , PROTO_READ|PROTO_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, 0 ,0 )) != NULL) {
  352.         if (ipc_call_sync_3(fb_info.phone, IPC_M_AS_AREA_SEND, (ipcarg_t)interbuffer, 0, AS_AREA_READ | AS_AREA_CACHEABLE, NULL, NULL, NULL) != 0) {
  353. //          ipc_call_async_3(fb_info.phone, FB_PUTCHAR, '?', 10, 10, NULL, NULL);
  354.             munmap(interbuffer, sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
  355.             interbuffer = NULL;
  356.         }
  357. /*  } else {
  358.         ipc_call_async_3(fb_info.phone, FB_PUTCHAR, '!', 10, 10, NULL, NULL);
  359. */
  360.     }
  361.    
  362.     async_new_connection(phonehash, 0, NULL, keyboard_events);
  363.    
  364.     ipc_call_async_2(fb_info.phone, FB_CURSOR_GOTO, 0, 0, NULL, NULL);
  365.  
  366.     if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
  367.         return -1;
  368.     };
  369.    
  370.     async_manager();
  371.  
  372.     return 0;  
  373. }
  374.