Subversion Repositories HelenOS

Rev

Rev 4263 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  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. /** @addtogroup console
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <libc.h>
  36. #include <fb.h>
  37. #include <ipc/ipc.h>
  38. #include <kbd.h>
  39. #include <kbd/keycode.h>
  40. #include <ipc/fb.h>
  41. #include <ipc/services.h>
  42. #include <errno.h>
  43. #include <key_buffer.h>
  44. #include <ipc/console.h>
  45. #include <unistd.h>
  46. #include <async.h>
  47. #include <libadt/fifo.h>
  48. #include <screenbuffer.h>
  49. #include <sys/mman.h>
  50. #include <stdio.h>
  51. #include <string.h>
  52. #include <sysinfo.h>
  53. #include <event.h>
  54.  
  55. #include "console.h"
  56. #include "gcons.h"
  57.  
  58. #define MAX_KEYREQUESTS_BUFFERED 32
  59.  
  60. #define NAME "console"
  61.  
  62. /** Index of currently used virtual console.
  63.  */
  64. int active_console = 0;
  65. int prev_console = 0;
  66.  
  67. /** Information about framebuffer */
  68. struct {
  69.     int phone;      /**< Framebuffer phone */
  70.     ipcarg_t rows;      /**< Framebuffer rows */
  71.     ipcarg_t cols;      /**< Framebuffer columns */
  72. } fb_info;
  73.  
  74. typedef struct {
  75.     keybuffer_t keybuffer;      /**< Buffer for incoming keys. */
  76.     /** Buffer for unsatisfied request for keys. */
  77.     FIFO_CREATE_STATIC(keyrequests, ipc_callid_t,
  78.         MAX_KEYREQUESTS_BUFFERED); 
  79.     int keyrequest_counter;     /**< Number of requests in buffer. */
  80.     int client_phone;       /**< Phone to connected client. */
  81.     int used;           /**< 1 if this virtual console is
  82.                      * connected to some client.*/
  83.     screenbuffer_t screenbuffer;    /**< Screenbuffer for saving screen
  84.                      * contents and related settings. */
  85. } connection_t;
  86.  
  87. static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual
  88.                          * consoles */
  89. static keyfield_t *interbuffer = NULL;      /**< Pointer to memory shared
  90.                          * with framebufer used for
  91.                          * faster virtual console
  92.                          * switching */
  93.  
  94. /** Information on row-span yet unsent to FB driver. */
  95. struct {
  96.     int row;        /**< Row where the span lies. */
  97.     int col;        /**< Leftmost column of the span. */
  98.     int n;          /**< Width of the span. */
  99. } fb_pending;
  100.  
  101. /** Size of cwrite_buf. */
  102. #define CWRITE_BUF_SIZE 256
  103.  
  104. /** Buffer for receiving data via the CONSOLE_WRITE call from the client. */
  105. static char cwrite_buf[CWRITE_BUF_SIZE];
  106.  
  107. static void fb_putchar(wchar_t c, int row, int col);
  108.  
  109.  
  110. /** Find unused virtual console.
  111.  *
  112.  */
  113. static int find_free_connection(void)
  114. {
  115.     int i;
  116.    
  117.     for (i = 0; i < CONSOLE_COUNT; i++) {
  118.         if (!connections[i].used)
  119.             return i;
  120.     }
  121.     return -1;
  122. }
  123.  
  124. static void clrscr(void)
  125. {
  126.     async_msg_0(fb_info.phone, FB_CLEAR);
  127. }
  128.  
  129. static void curs_visibility(bool visible)
  130. {
  131.     async_msg_1(fb_info.phone, FB_CURSOR_VISIBILITY, visible);
  132. }
  133.  
  134. static void curs_hide_sync(void)
  135. {
  136.     ipc_call_sync_1_0(fb_info.phone, FB_CURSOR_VISIBILITY, false);
  137. }
  138.  
  139. static void curs_goto(int row, int col)
  140. {
  141.     async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
  142. }
  143.  
  144. static void screen_yield(void)
  145. {
  146.     ipc_call_sync_0_0(fb_info.phone, FB_SCREEN_YIELD);
  147. }
  148.  
  149. static void screen_reclaim(void)
  150. {
  151.     ipc_call_sync_0_0(fb_info.phone, FB_SCREEN_RECLAIM);
  152. }
  153.  
  154. static void set_style(int style)
  155. {
  156.     async_msg_1(fb_info.phone, FB_SET_STYLE, style);
  157. }
  158.  
  159. static void set_color(int fgcolor, int bgcolor, int flags)
  160. {
  161.     async_msg_3(fb_info.phone, FB_SET_COLOR, fgcolor, bgcolor, flags);
  162. }
  163.  
  164. static void set_rgb_color(int fgcolor, int bgcolor)
  165. {
  166.     async_msg_2(fb_info.phone, FB_SET_RGB_COLOR, fgcolor, bgcolor);
  167. }
  168.  
  169. static void set_attrs(attrs_t *attrs)
  170. {
  171.     switch (attrs->t) {
  172.     case at_style:
  173.         set_style(attrs->a.s.style);
  174.         break;
  175.  
  176.     case at_idx:
  177.         set_color(attrs->a.i.fg_color, attrs->a.i.bg_color,
  178.             attrs->a.i.flags);
  179.         break;
  180.  
  181.     case at_rgb:
  182.         set_rgb_color(attrs->a.r.fg_color, attrs->a.r.bg_color);
  183.         break;
  184.     }
  185. }
  186.  
  187. /** Send an area of screenbuffer to the FB driver. */
  188. static void fb_update_area(connection_t *conn, int x, int y, int w, int h)
  189. {
  190.     int i, j;
  191.     int rc;
  192.     attrs_t *attrs;
  193.     keyfield_t *field;
  194.  
  195.     if (interbuffer) {
  196.         for (j = 0; j < h; j++) {
  197.             for (i = 0; i < w; i++) {
  198.                 interbuffer[i + j * w] =
  199.                     *get_field_at(&conn->screenbuffer,
  200.                     x + i, y + j);
  201.             }
  202.         }
  203.  
  204.         rc = async_req_4_0(fb_info.phone, FB_DRAW_TEXT_DATA,
  205.             x, y, w, h);
  206.     } else {
  207.         rc = ENOTSUP;
  208.     }
  209.  
  210.     if (rc != 0) {
  211.         /*
  212.         attrs = &conn->screenbuffer.attrs;
  213.  
  214.         for (j = 0; j < h; j++) {
  215.             for (i = 0; i < w; i++) {
  216.                 field = get_field_at(&conn->screenbuffer,
  217.                     x + i, y + j);
  218.                 if (!attrs_same(*attrs, field->attrs))
  219.                     set_attrs(&field->attrs);
  220.                 attrs = &field->attrs;
  221.  
  222.                 fb_putchar(field->character, y + j, x + i);
  223.             }
  224.         }*/
  225.     }
  226. }
  227.  
  228. /** Flush pending cells to FB. */
  229. static void fb_pending_flush(void)
  230. {
  231.     screenbuffer_t *scr;
  232.  
  233.     scr = &(connections[active_console].screenbuffer);
  234.  
  235.     if (fb_pending.n > 0) {
  236.         fb_update_area(&connections[active_console], fb_pending.col,
  237.             fb_pending.row, fb_pending.n, 1);
  238.         fb_pending.n = 0;
  239.     }
  240. }
  241.  
  242. /** Mark a character cell as changed.
  243.  *
  244.  * This adds the cell to the pending rowspan if possible. Otherwise
  245.  * the old span is flushed first.
  246.  */
  247. static void cell_mark_changed(int row, int col)
  248. {
  249.     if (fb_pending.n != 0) {
  250.         if (row != fb_pending.row ||
  251.             col != fb_pending.col + fb_pending.n) {
  252.             fb_pending_flush();
  253.         }
  254.     }
  255.  
  256.     if (fb_pending.n == 0) {
  257.         fb_pending.row = row;
  258.         fb_pending.col = col;
  259.     }
  260.  
  261.     ++fb_pending.n;
  262. }
  263.  
  264.  
  265. /** Print a character to the active VC with buffering. */
  266. static void fb_putchar(wchar_t c, int row, int col)
  267. {
  268.     async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
  269. }
  270.  
  271. /** Process a character from the client (TTY emulation). */
  272. static void write_char(int console, wchar_t ch)
  273. {
  274.     bool flush_cursor = false;
  275.     screenbuffer_t *scr = &(connections[console].screenbuffer);
  276.  
  277.     switch (ch) {
  278.     case '\n':
  279.         fb_pending_flush();
  280.         flush_cursor = true;
  281.         scr->position_y++;
  282.         scr->position_x = 0;
  283.         break;
  284.     case '\r':
  285.         break;
  286.     case '\t':
  287.         scr->position_x += 8;
  288.         scr->position_x -= scr->position_x % 8;
  289.         break;
  290.     case '\b':
  291.         if (scr->position_x == 0)
  292.             break;
  293.         scr->position_x--;
  294.         if (console == active_console)
  295.             cell_mark_changed(scr->position_y, scr->position_x);
  296.         screenbuffer_putchar(scr, ' ');
  297.         break;
  298.     default:   
  299.         if (console == active_console)
  300.             cell_mark_changed(scr->position_y, scr->position_x);
  301.  
  302.         screenbuffer_putchar(scr, ch);
  303.         scr->position_x++;
  304.     }
  305.  
  306.     if (scr->position_x >= scr->size_x) {
  307.         flush_cursor = true;
  308.         scr->position_y++;
  309.     }
  310.    
  311.     if (scr->position_y >= scr->size_y) {
  312.         fb_pending_flush();
  313.         scr->position_y = scr->size_y - 1;
  314.         screenbuffer_clear_line(scr, scr->top_line);
  315.         scr->top_line = (scr->top_line + 1) % scr->size_y;
  316.         if (console == active_console)
  317.             async_msg_1(fb_info.phone, FB_SCROLL, 1);
  318.     }
  319.  
  320.     scr->position_x = scr->position_x % scr->size_x;
  321.  
  322.     if (console == active_console && flush_cursor)
  323.         curs_goto(scr->position_y, scr->position_x);
  324. }
  325.  
  326. /** Switch to new console */
  327. static void change_console(int newcons)
  328. {
  329.     connection_t *conn;
  330.     int i, j, rc;
  331.     keyfield_t *field;
  332.     attrs_t *attrs;
  333.    
  334.     if (newcons == active_console)
  335.         return;
  336.  
  337.     fb_pending_flush();
  338.  
  339.     if (newcons == KERNEL_CONSOLE) {
  340.         async_serialize_start();
  341.         curs_hide_sync();
  342.         gcons_in_kernel();
  343.         screen_yield();
  344.         async_serialize_end();
  345.  
  346.        
  347.         if (__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE)) {
  348.             prev_console = active_console;
  349.             active_console = KERNEL_CONSOLE;
  350.         } else
  351.             newcons = active_console;
  352.     }
  353.    
  354.     if (newcons != KERNEL_CONSOLE) {
  355.         async_serialize_start();
  356.        
  357.         if (active_console == KERNEL_CONSOLE) {
  358.             screen_reclaim();
  359.             gcons_redraw_console();
  360.         }
  361.        
  362.         active_console = newcons;
  363.         gcons_change_console(newcons);
  364.         conn = &connections[active_console];
  365.        
  366.         set_attrs(&conn->screenbuffer.attrs);
  367.         curs_visibility(false);
  368.         if (interbuffer) {
  369.             for (j = 0; j < conn->screenbuffer.size_y; j++) {
  370.                 for (i = 0; i < conn->screenbuffer.size_x; i++) {
  371.                     unsigned int size_x;
  372.                    
  373.                     size_x = conn->screenbuffer.size_x;
  374.                     interbuffer[j * size_x + i] =
  375.                         *get_field_at(&conn->screenbuffer, i, j);
  376.                 }
  377.             }
  378.             /* This call can preempt, but we are already at the end */
  379.             rc = async_req_4_0(fb_info.phone, FB_DRAW_TEXT_DATA,
  380.                 0, 0, conn->screenbuffer.size_x,
  381.                 conn->screenbuffer.size_y);
  382.         }
  383.        
  384.         if ((!interbuffer) || (rc != 0)) {
  385.             set_attrs(&conn->screenbuffer.attrs);
  386.             clrscr();
  387.             attrs = &conn->screenbuffer.attrs;
  388.            
  389.             for (j = 0; j < conn->screenbuffer.size_y; j++)
  390.                 for (i = 0; i < conn->screenbuffer.size_x; i++) {
  391.                     field = get_field_at(&conn->screenbuffer, i, j);
  392.                     if (!attrs_same(*attrs, field->attrs))
  393.                         set_attrs(&field->attrs);
  394.                     attrs = &field->attrs;
  395.                     if ((field->character == ' ') &&
  396.                         (attrs_same(field->attrs,
  397.                         conn->screenbuffer.attrs)))
  398.                         continue;
  399.  
  400.                     fb_putchar(field->character, j, i);
  401.                 }
  402.         }
  403.        
  404.         curs_goto(conn->screenbuffer.position_y,
  405.             conn->screenbuffer.position_x);
  406.         curs_visibility(conn->screenbuffer.is_cursor_visible);
  407.        
  408.         async_serialize_end();
  409.     }
  410. }
  411.  
  412. /** Handler for keyboard */
  413. static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
  414. {
  415.     ipc_callid_t callid;
  416.     ipc_call_t call;
  417.     int retval;
  418.     kbd_event_t ev;
  419.     connection_t *conn;
  420.     int newcon;
  421.    
  422.     /* Ignore parameters, the connection is alread opened */
  423.     while (1) {
  424.         callid = async_get_call(&call);
  425.         switch (IPC_GET_METHOD(call)) {
  426.         case IPC_M_PHONE_HUNGUP:
  427.             /* TODO: Handle hangup */
  428.             return;
  429.         case KBD_MS_LEFT:
  430.             newcon = gcons_mouse_btn(IPC_GET_ARG1(call));
  431.             if (newcon != -1)
  432.                 change_console(newcon);
  433.             retval = 0;
  434.             break;
  435.         case KBD_MS_MOVE:
  436.             gcons_mouse_move(IPC_GET_ARG1(call),
  437.                 IPC_GET_ARG2(call));
  438.             retval = 0;
  439.             break;
  440.         case KBD_EVENT:
  441.             /* Got event from keyboard driver. */
  442.             retval = 0;
  443.             ev.type = IPC_GET_ARG1(call);
  444.             ev.key = IPC_GET_ARG2(call);
  445.             ev.mods = IPC_GET_ARG3(call);
  446.             ev.c = IPC_GET_ARG4(call);
  447.            
  448.             /* switch to another virtual console */
  449.            
  450.             conn = &connections[active_console];
  451.  
  452.             if ((ev.key >= KC_F1) && (ev.key < KC_F1 +
  453.                 CONSOLE_COUNT) && ((ev.mods & KM_CTRL) == 0)) {
  454.                 if (ev.key == KC_F12)
  455.                     change_console(KERNEL_CONSOLE);
  456.                 else
  457.                     change_console(ev.key - KC_F1);
  458.                 break;
  459.             }
  460.            
  461.             /* if client is awaiting key, send it */
  462.             if (conn->keyrequest_counter > 0) {    
  463.                 conn->keyrequest_counter--;
  464.                 ipc_answer_4(fifo_pop(conn->keyrequests), EOK,
  465.                     ev.type, ev.key, ev.mods, ev.c);
  466.                 break;
  467.             }
  468.  
  469.             keybuffer_push(&conn->keybuffer, &ev);
  470.             retval = 0;
  471.  
  472.             break;
  473.         default:
  474.             retval = ENOENT;
  475.         }
  476.         ipc_answer_0(callid, retval);
  477.     }
  478. }
  479.  
  480. /** Handle CONSOLE_WRITE call. */
  481. static void cons_write(int consnum, ipc_callid_t rid, ipc_call_t *request)
  482. {
  483.     ipc_callid_t callid;
  484.     size_t size;
  485.     wchar_t ch;
  486.     size_t off;
  487.  
  488.     if (!ipc_data_write_receive(&callid, &size)) {
  489.         ipc_answer_0(callid, EINVAL);
  490.         ipc_answer_0(rid, EINVAL);
  491.     }
  492.  
  493.     if (size > CWRITE_BUF_SIZE)
  494.         size = CWRITE_BUF_SIZE;
  495.  
  496.     (void) ipc_data_write_finalize(callid, cwrite_buf, size);
  497.  
  498.     off = 0;
  499.     while (off < size) {
  500.         ch = str_decode(cwrite_buf, &off, size);
  501.         write_char(consnum, ch);
  502.     }
  503.  
  504.     gcons_notify_char(consnum);
  505.     ipc_answer_1(rid, EOK, size);
  506. }
  507.  
  508. /** Default thread for new connections */
  509. static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
  510. {
  511.     ipc_callid_t callid;
  512.     ipc_call_t call;
  513.     int consnum;
  514.     ipcarg_t arg1, arg2, arg3, arg4;
  515.     connection_t *conn;
  516.     screenbuffer_t *scr;
  517.    
  518.     if ((consnum = find_free_connection()) == -1) {
  519.         ipc_answer_0(iid, ELIMIT);
  520.         return;
  521.     }
  522.     conn = &connections[consnum];
  523.     conn->used = 1;
  524.    
  525.     async_serialize_start();
  526.     gcons_notify_connect(consnum);
  527.     conn->client_phone = IPC_GET_ARG5(*icall);
  528.     screenbuffer_clear(&conn->screenbuffer);
  529.     if (consnum == active_console)
  530.         clrscr();
  531.    
  532.     /* Accept the connection */
  533.     ipc_answer_0(iid, EOK);
  534.    
  535.     while (1) {
  536.         async_serialize_end();
  537.         callid = async_get_call(&call);
  538.         async_serialize_start();
  539.        
  540.         arg1 = 0;
  541.         arg2 = 0;
  542.         arg3 = 0;
  543.         arg4 = 0;
  544.  
  545.         switch (IPC_GET_METHOD(call)) {
  546.         case IPC_M_PHONE_HUNGUP:
  547.             gcons_notify_disconnect(consnum);
  548.            
  549.             /* Answer all pending requests */
  550.             while (conn->keyrequest_counter > 0) {
  551.                 conn->keyrequest_counter--;
  552.                 ipc_answer_0(fifo_pop(conn->keyrequests),
  553.                     ENOENT);
  554.                 break;
  555.             }
  556.             conn->used = 0;
  557.             return;
  558.         case CONSOLE_PUTCHAR:
  559.             write_char(consnum, IPC_GET_ARG1(call));
  560.             gcons_notify_char(consnum);
  561.             break;
  562.         case CONSOLE_WRITE:
  563.             cons_write(consnum, callid, &call);
  564.             continue;
  565.         case CONSOLE_CLEAR:
  566.             /* Send message to fb */
  567.             if (consnum == active_console) {
  568.                 async_msg_0(fb_info.phone, FB_CLEAR);
  569.             }
  570.            
  571.             screenbuffer_clear(&conn->screenbuffer);
  572.            
  573.             break;
  574.         case CONSOLE_GOTO:
  575.             screenbuffer_goto(&conn->screenbuffer,
  576.                 IPC_GET_ARG2(call), IPC_GET_ARG1(call));
  577.             if (consnum == active_console)
  578.                 curs_goto(IPC_GET_ARG1(call),
  579.                     IPC_GET_ARG2(call));
  580.             break;
  581.         case CONSOLE_GETSIZE:
  582.             arg1 = fb_info.rows;
  583.             arg2 = fb_info.cols;
  584.             break;
  585.         case CONSOLE_FLUSH:
  586.             fb_pending_flush();
  587.             if (consnum == active_console) {
  588.                 async_req_0_0(fb_info.phone, FB_FLUSH);
  589.  
  590.                 scr = &(connections[consnum].screenbuffer);
  591.                 curs_goto(scr->position_y, scr->position_x);
  592.             }
  593.             break;
  594.         case CONSOLE_SET_STYLE:
  595.             fb_pending_flush();
  596.             arg1 = IPC_GET_ARG1(call);
  597.             screenbuffer_set_style(&conn->screenbuffer, arg1);
  598.             if (consnum == active_console)
  599.                 set_style(arg1);
  600.             break;
  601.         case CONSOLE_SET_COLOR:
  602.             fb_pending_flush();
  603.             arg1 = IPC_GET_ARG1(call);
  604.             arg2 = IPC_GET_ARG2(call);
  605.             arg3 = IPC_GET_ARG3(call);
  606.             screenbuffer_set_color(&conn->screenbuffer, arg1,
  607.                 arg2, arg3);
  608.             if (consnum == active_console)
  609.                 set_color(arg1, arg2, arg3);
  610.             break;
  611.         case CONSOLE_SET_RGB_COLOR:
  612.             fb_pending_flush();
  613.             arg1 = IPC_GET_ARG1(call);
  614.             arg2 = IPC_GET_ARG2(call);
  615.             screenbuffer_set_rgb_color(&conn->screenbuffer, arg1,
  616.                 arg2);
  617.             if (consnum == active_console)
  618.                 set_rgb_color(arg1, arg2);
  619.             break;
  620.         case CONSOLE_CURSOR_VISIBILITY:
  621.             fb_pending_flush();
  622.             arg1 = IPC_GET_ARG1(call);
  623.             conn->screenbuffer.is_cursor_visible = arg1;
  624.             if (consnum == active_console)
  625.                 curs_visibility(arg1);
  626.             break;
  627.         case CONSOLE_GETKEY:
  628.             if (keybuffer_empty(&conn->keybuffer)) {
  629.                 /* buffer is empty -> store request */
  630.                 if (conn->keyrequest_counter <
  631.                     MAX_KEYREQUESTS_BUFFERED) {
  632.                     fifo_push(conn->keyrequests, callid);
  633.                     conn->keyrequest_counter++;
  634.                 } else {
  635.                     /*
  636.                      * No key available and too many
  637.                      * requests => fail.
  638.                     */
  639.                     ipc_answer_0(callid, ELIMIT);
  640.                 }
  641.                 continue;
  642.             }
  643.             kbd_event_t ev;
  644.             keybuffer_pop(&conn->keybuffer, &ev);
  645.             arg1 = ev.type;
  646.             arg2 = ev.key;
  647.             arg3 = ev.mods;
  648.             arg4 = ev.c;
  649.             break;
  650.         case CONSOLE_KCON_ENABLE:
  651.             change_console(KERNEL_CONSOLE);
  652.             break;
  653.         }
  654.         ipc_answer_4(callid, EOK, arg1, arg2, arg3, arg4);
  655.     }
  656. }
  657.  
  658. static void interrupt_received(ipc_callid_t callid, ipc_call_t *call)
  659. {
  660.     change_console(prev_console);
  661. }
  662.  
  663. int main(int argc, char *argv[])
  664. {
  665.     printf(NAME ": HelenOS Console service\n");
  666.    
  667.     ipcarg_t phonehash;
  668.     int kbd_phone;
  669.     size_t ib_size;
  670.     int i;
  671.    
  672.     async_set_client_connection(client_connection);
  673.    
  674.     /* Connect to keyboard driver */
  675.     kbd_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
  676.     if (kbd_phone < 0) {
  677.         printf(NAME ": Failed to connect to keyboard service\n");
  678.         return -1;
  679.     }
  680.    
  681.     if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, &phonehash) != 0) {
  682.         printf(NAME ": Failed to create callback from keyboard service\n");
  683.         return -1;
  684.     }
  685.    
  686.     async_new_connection(phonehash, 0, NULL, keyboard_events);
  687.    
  688.     /* Connect to framebuffer driver */
  689.     fb_info.phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_VIDEO, 0, 0);
  690.     if (fb_info.phone < 0) {
  691.         printf(NAME ": Failed to connect to video service\n");
  692.         return -1;
  693.     }
  694.    
  695.     /* Disable kernel output to the console */
  696.     __SYSCALL0(SYS_DEBUG_DISABLE_CONSOLE);
  697.    
  698.     /* Initialize gcons */
  699.     gcons_init(fb_info.phone);
  700.     /* Synchronize, the gcons can have something in queue */
  701.     async_req_0_0(fb_info.phone, FB_FLUSH);
  702.    
  703.     async_req_0_2(fb_info.phone, FB_GET_CSIZE, &fb_info.rows,
  704.         &fb_info.cols);
  705.     set_rgb_color(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
  706.     clrscr();
  707.    
  708.     /* Init virtual consoles */
  709.     for (i = 0; i < CONSOLE_COUNT; i++) {
  710.         connections[i].used = 0;
  711.         keybuffer_init(&connections[i].keybuffer);
  712.        
  713.         connections[i].keyrequests.head = 0;
  714.         connections[i].keyrequests.tail = 0;
  715.         connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
  716.         connections[i].keyrequest_counter = 0;
  717.        
  718.         if (screenbuffer_init(&connections[i].screenbuffer,
  719.             fb_info.cols, fb_info.rows) == NULL) {
  720.             /* FIXME: handle error */
  721.             return -1;
  722.         }
  723.     }
  724.     connections[KERNEL_CONSOLE].used = 1;
  725.  
  726.     /* Set up shared memory buffer. */
  727.     ib_size = sizeof(keyfield_t) * fb_info.cols * fb_info.rows;
  728.     interbuffer = as_get_mappable_page(ib_size);
  729.  
  730.     fb_pending.n = 0;
  731.  
  732.     if (as_area_create(interbuffer, ib_size, AS_AREA_READ |
  733.         AS_AREA_WRITE | AS_AREA_CACHEABLE) != interbuffer) {
  734.         interbuffer = NULL;
  735.     }
  736.  
  737.     if (interbuffer) {
  738.         if (ipc_share_out_start(fb_info.phone, interbuffer,
  739.             AS_AREA_READ) != EOK) {
  740.             as_area_destroy(interbuffer);
  741.             interbuffer = NULL;
  742.         }
  743.     }
  744.    
  745.     curs_goto(0, 0);
  746.     curs_visibility(
  747.         connections[active_console].screenbuffer.is_cursor_visible);
  748.    
  749.     /* Register at NS */
  750.     if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
  751.         return -1;
  752.    
  753.     /* Receive kernel notifications */
  754.     if (event_subscribe(EVENT_KCONSOLE, 0) != EOK)
  755.         printf(NAME ": Error registering kconsole notifications\n");
  756.        
  757.     async_set_interrupt_received(interrupt_received);
  758.    
  759.     // FIXME: avoid connectiong to itself, keep using klog
  760.     // printf(NAME ": Accepting connections\n");
  761.     async_manager();
  762.    
  763.     return 0;
  764. }
  765.  
  766. /** @}
  767.  */
  768.