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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. /** @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 <io/keycode.h>
  40. #include <ipc/fb.h>
  41. #include <ipc/services.h>
  42. #include <errno.h>
  43. #include <keybuffer.h>
  44. #include <ipc/console.h>
  45. #include <unistd.h>
  46. #include <async.h>
  47. #include <adt/fifo.h>
  48. #include <sys/mman.h>
  49. #include <stdio.h>
  50. #include <string.h>
  51. #include <sysinfo.h>
  52. #include <event.h>
  53. #include <devmap.h>
  54.  
  55. #include "console.h"
  56. #include "gcons.h"
  57. #include "screenbuffer.h"
  58.  
  59. #define NAME  "console"
  60.  
  61. #define MAX_DEVICE_NAME  32
  62.  
  63. /** Phone to the keyboard driver. */
  64. static int kbd_phone;
  65.  
  66. /** Information about framebuffer */
  67. struct {
  68.     int phone;      /**< Framebuffer phone */
  69.     ipcarg_t cols;  /**< Framebuffer columns */
  70.     ipcarg_t rows;  /**< Framebuffer rows */
  71. } fb_info;
  72.  
  73. typedef struct {
  74.     size_t index;             /**< Console index */
  75.     size_t refcount;          /**< Connection reference count */
  76.     dev_handle_t dev_handle;  /**< Device handle */
  77.     keybuffer_t keybuffer;    /**< Buffer for incoming keys. */
  78.     screenbuffer_t scr;       /**< Screenbuffer for saving screen
  79.                                    contents and related settings. */
  80. } console_t;
  81.  
  82. /** Array of data for virtual consoles */
  83. static console_t consoles[CONSOLE_COUNT];
  84.  
  85. static console_t *active_console = &consoles[0];
  86. static console_t *prev_console = &consoles[0];
  87. static console_t *kernel_console = &consoles[KERNEL_CONSOLE];
  88.  
  89. /** Pointer to memory shared with framebufer used for
  90.     faster virtual console switching */
  91. static keyfield_t *interbuffer = NULL;
  92.  
  93. /** Information on row-span yet unsent to FB driver. */
  94. struct {
  95.     size_t col;  /**< Leftmost column of the span. */
  96.     size_t row;  /**< Row where the span lies. */
  97.     size_t cnt;  /**< Width of the span. */
  98. } fb_pending;
  99.  
  100. /** Pending input structure. */
  101. typedef struct {
  102.     link_t link;
  103.     console_t *cons;      /**< Console waiting for input */
  104.     ipc_callid_t rid;     /**< Call ID waiting for input */
  105.     ipc_callid_t callid;  /**< Call ID waiting for IPC_DATA_READ */
  106.    
  107.     size_t pos;           /**< Position of the last stored data */
  108.     size_t size;          /**< Size of ther buffer */
  109.     char *data;           /**< Already stored data */
  110. } pending_input_t;
  111.  
  112. LIST_INITIALIZE(pending_input);
  113.  
  114. /** Process pending input requests */
  115. static void process_pending_input(void)
  116. {
  117.     async_serialize_start();
  118.    
  119.     link_t *cur;
  120.    
  121. loop:
  122.     for (cur = pending_input.next; cur != &pending_input; cur = cur->next) {
  123.         pending_input_t *pr = list_get_instance(cur, pending_input_t, link);
  124.        
  125.         console_event_t ev;
  126.         if (keybuffer_pop(&pr->cons->keybuffer, &ev)) {
  127.            
  128.             if (pr->data != NULL) {
  129.                 if (ev.type == KEY_PRESS) {
  130.                     pr->data[pr->pos] = ev.c;
  131.                     pr->pos++;
  132.                 }
  133.             } else {
  134.                 ipc_answer_4(pr->rid, EOK, ev.type, ev.key, ev.mods, ev.c);
  135.                
  136.                 list_remove(cur);
  137.                 free(pr);
  138.                
  139.                 goto loop;
  140.             }
  141.         }
  142.        
  143.         if ((pr->data != NULL) && (pr->pos == pr->size)) {
  144.             (void) ipc_data_read_finalize(pr->callid, pr->data, pr->size);
  145.             ipc_answer_1(pr->rid, EOK, pr->size);
  146.            
  147.             free(pr->data);
  148.             list_remove(cur);
  149.             free(pr);
  150.            
  151.             goto loop;
  152.         }
  153.     }
  154.    
  155.     async_serialize_end();
  156. }
  157.  
  158. static void curs_visibility(bool visible)
  159. {
  160.     async_msg_1(fb_info.phone, FB_CURSOR_VISIBILITY, visible);
  161. }
  162.  
  163. static void curs_hide_sync(void)
  164. {
  165.     ipc_call_sync_1_0(fb_info.phone, FB_CURSOR_VISIBILITY, false);
  166. }
  167.  
  168. static void curs_goto(size_t x, size_t y)
  169. {
  170.     async_msg_2(fb_info.phone, FB_CURSOR_GOTO, x, y);
  171. }
  172.  
  173. static void screen_clear(void)
  174. {
  175.     async_msg_0(fb_info.phone, FB_CLEAR);
  176. }
  177.  
  178. static void screen_yield(void)
  179. {
  180.     ipc_call_sync_0_0(fb_info.phone, FB_SCREEN_YIELD);
  181. }
  182.  
  183. static void screen_reclaim(void)
  184. {
  185.     ipc_call_sync_0_0(fb_info.phone, FB_SCREEN_RECLAIM);
  186. }
  187.  
  188. static void kbd_yield(void)
  189. {
  190.     ipc_call_sync_0_0(kbd_phone, KBD_YIELD);
  191. }
  192.  
  193. static void kbd_reclaim(void)
  194. {
  195.     ipc_call_sync_0_0(kbd_phone, KBD_RECLAIM);
  196. }
  197.  
  198. static void set_style(int style)
  199. {
  200.     async_msg_1(fb_info.phone, FB_SET_STYLE, style);
  201. }
  202.  
  203. static void set_color(int fgcolor, int bgcolor, int flags)
  204. {
  205.     async_msg_3(fb_info.phone, FB_SET_COLOR, fgcolor, bgcolor, flags);
  206. }
  207.  
  208. static void set_rgb_color(int fgcolor, int bgcolor)
  209. {
  210.     async_msg_2(fb_info.phone, FB_SET_RGB_COLOR, fgcolor, bgcolor);
  211. }
  212.  
  213. static void set_attrs(attrs_t *attrs)
  214. {
  215.     switch (attrs->t) {
  216.     case at_style:
  217.         set_style(attrs->a.s.style);
  218.         break;
  219.     case at_idx:
  220.         set_color(attrs->a.i.fg_color, attrs->a.i.bg_color,
  221.             attrs->a.i.flags);
  222.         break;
  223.     case at_rgb:
  224.         set_rgb_color(attrs->a.r.fg_color, attrs->a.r.bg_color);
  225.         break;
  226.     }
  227. }
  228.  
  229. /** Send an area of screenbuffer to the FB driver. */
  230. static void fb_update_area(console_t *cons, ipcarg_t x0, ipcarg_t y0, ipcarg_t width, ipcarg_t height)
  231. {
  232.     if (interbuffer) {
  233.         ipcarg_t x;
  234.         ipcarg_t y;
  235.        
  236.         for (y = 0; y < height; y++) {
  237.             for (x = 0; x < width; x++) {
  238.                 interbuffer[y * width + x] =
  239.                     *get_field_at(&cons->scr, x0 + x, y0 + y);
  240.             }
  241.         }
  242.        
  243.         async_req_4_0(fb_info.phone, FB_DRAW_TEXT_DATA,
  244.             x0, y0, width, height);
  245.     }
  246. }
  247.  
  248. /** Flush pending cells to FB. */
  249. static void fb_pending_flush(void)
  250. {
  251.     if (fb_pending.cnt > 0) {
  252.         fb_update_area(active_console, fb_pending.col,
  253.             fb_pending.row, fb_pending.cnt, 1);
  254.         fb_pending.cnt = 0;
  255.     }
  256. }
  257.  
  258. /** Mark a character cell as changed.
  259.  *
  260.  * This adds the cell to the pending rowspan if possible. Otherwise
  261.  * the old span is flushed first.
  262.  *
  263.  */
  264. static void cell_mark_changed(size_t col, size_t row)
  265. {
  266.     if (fb_pending.cnt != 0) {
  267.         if ((col != fb_pending.col + fb_pending.cnt)
  268.             || (row != fb_pending.row)) {
  269.             fb_pending_flush();
  270.         }
  271.     }
  272.    
  273.     if (fb_pending.cnt == 0) {
  274.         fb_pending.col = col;
  275.         fb_pending.row = row;
  276.     }
  277.    
  278.     fb_pending.cnt++;
  279. }
  280.  
  281. /** Print a character to the active VC with buffering. */
  282. static void fb_putchar(wchar_t c, ipcarg_t col, ipcarg_t row)
  283. {
  284.     async_msg_3(fb_info.phone, FB_PUTCHAR, c, col, row);
  285. }
  286.  
  287. /** Process a character from the client (TTY emulation). */
  288. static void write_char(console_t *cons, wchar_t ch)
  289. {
  290.     switch (ch) {
  291.     case '\n':
  292.         fb_pending_flush();
  293.         cons->scr.position_y++;
  294.         cons->scr.position_x = 0;
  295.         break;
  296.     case '\r':
  297.         break;
  298.     case '\t':
  299.         cons->scr.position_x += 8;
  300.         cons->scr.position_x -= cons->scr.position_x % 8;
  301.         break;
  302.     case '\b':
  303.         if (cons->scr.position_x == 0)
  304.             break;
  305.         cons->scr.position_x--;
  306.         if (cons == active_console)
  307.             cell_mark_changed(cons->scr.position_x, cons->scr.position_y);
  308.         screenbuffer_putchar(&cons->scr, ' ');
  309.         break;
  310.     default:
  311.         if (cons == active_console)
  312.             cell_mark_changed(cons->scr.position_x, cons->scr.position_y);
  313.        
  314.         screenbuffer_putchar(&cons->scr, ch);
  315.         cons->scr.position_x++;
  316.     }
  317.    
  318.     if (cons->scr.position_x >= cons->scr.size_x)
  319.         cons->scr.position_y++;
  320.    
  321.     if (cons->scr.position_y >= cons->scr.size_y) {
  322.         fb_pending_flush();
  323.         cons->scr.position_y = cons->scr.size_y - 1;
  324.         screenbuffer_clear_line(&cons->scr, cons->scr.top_line);
  325.         cons->scr.top_line = (cons->scr.top_line + 1) % cons->scr.size_y;
  326.        
  327.         if (cons == active_console)
  328.             async_msg_1(fb_info.phone, FB_SCROLL, 1);
  329.     }
  330.    
  331.     cons->scr.position_x = cons->scr.position_x % cons->scr.size_x;
  332. }
  333.  
  334. /** Switch to new console */
  335. static void change_console(console_t *cons)
  336. {
  337.     if (cons == active_console)
  338.         return;
  339.    
  340.     fb_pending_flush();
  341.    
  342.     if (cons == kernel_console) {
  343.         async_serialize_start();
  344.         curs_hide_sync();
  345.         gcons_in_kernel();
  346.         screen_yield();
  347.         kbd_yield();
  348.         async_serialize_end();
  349.        
  350.         if (__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE)) {
  351.             prev_console = active_console;
  352.             active_console = kernel_console;
  353.         } else
  354.             cons = active_console;
  355.     }
  356.    
  357.     if (cons != kernel_console) {
  358.         size_t x;
  359.         size_t y;
  360.         int rc = 0;
  361.        
  362.         async_serialize_start();
  363.        
  364.         if (active_console == kernel_console) {
  365.             screen_reclaim();
  366.             kbd_reclaim();
  367.             gcons_redraw_console();
  368.         }
  369.        
  370.         active_console = cons;
  371.         gcons_change_console(cons->index);
  372.        
  373.         set_attrs(&cons->scr.attrs);
  374.         curs_visibility(false);
  375.         if (interbuffer) {
  376.             for (y = 0; y < cons->scr.size_y; y++) {
  377.                 for (x = 0; x < cons->scr.size_x; x++) {
  378.                     interbuffer[y * cons->scr.size_x + x] =
  379.                         *get_field_at(&cons->scr, x, y);
  380.                 }
  381.             }
  382.            
  383.             /* This call can preempt, but we are already at the end */
  384.             rc = async_req_4_0(fb_info.phone, FB_DRAW_TEXT_DATA,
  385.                 0, 0, cons->scr.size_x,
  386.                 cons->scr.size_y);
  387.         }
  388.        
  389.         if ((!interbuffer) || (rc != 0)) {
  390.             set_attrs(&cons->scr.attrs);
  391.             screen_clear();
  392.            
  393.             for (y = 0; y < cons->scr.size_y; y++)
  394.                 for (x = 0; x < cons->scr.size_x; x++) {
  395.                     keyfield_t *field = get_field_at(&cons->scr, x, y);
  396.                    
  397.                     if (!attrs_same(cons->scr.attrs, field->attrs))
  398.                         set_attrs(&field->attrs);
  399.                    
  400.                     cons->scr.attrs = field->attrs;
  401.                     if ((field->character == ' ') &&
  402.                         (attrs_same(field->attrs, cons->scr.attrs)))
  403.                         continue;
  404.                    
  405.                     fb_putchar(field->character, x, y);
  406.                 }
  407.         }
  408.        
  409.         curs_goto(cons->scr.position_x, cons->scr.position_y);
  410.         curs_visibility(cons->scr.is_cursor_visible);
  411.        
  412.         async_serialize_end();
  413.     }
  414. }
  415.  
  416. /** Handler for keyboard */
  417. static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
  418. {
  419.     /* Ignore parameters, the connection is already opened */
  420.     while (true) {
  421.        
  422.         ipc_call_t call;
  423.         ipc_callid_t callid = async_get_call(&call);
  424.        
  425.         int retval;
  426.         console_event_t ev;
  427.        
  428.         switch (IPC_GET_METHOD(call)) {
  429.         case IPC_M_PHONE_HUNGUP:
  430.             /* TODO: Handle hangup */
  431.             return;
  432.         case KBD_EVENT:
  433.             /* Got event from keyboard driver. */
  434.             retval = 0;
  435.             ev.type = IPC_GET_ARG1(call);
  436.             ev.key = IPC_GET_ARG2(call);
  437.             ev.mods = IPC_GET_ARG3(call);
  438.             ev.c = IPC_GET_ARG4(call);
  439.            
  440.             if ((ev.key >= KC_F1) && (ev.key < KC_F1 +
  441.                 CONSOLE_COUNT) && ((ev.mods & KM_CTRL) == 0)) {
  442.                 if (ev.key == KC_F1 + KERNEL_CONSOLE)
  443.                     change_console(kernel_console);
  444.                 else
  445.                     change_console(&consoles[ev.key - KC_F1]);
  446.                 break;
  447.             }
  448.            
  449.             keybuffer_push(&active_console->keybuffer, &ev);
  450.             break;
  451.         default:
  452.             retval = ENOENT;
  453.         }
  454.         ipc_answer_0(callid, retval);
  455.     }
  456. }
  457.  
  458. static void cons_write(console_t *cons, ipc_callid_t rid, ipc_call_t *request)
  459. {
  460.     ipc_callid_t callid;
  461.     size_t size;
  462.     if (!ipc_data_write_receive(&callid, &size)) {
  463.         ipc_answer_0(callid, EINVAL);
  464.         ipc_answer_0(rid, EINVAL);
  465.         return;
  466.     }
  467.    
  468.     char *buf = (char *) malloc(size);
  469.     if (buf == NULL) {
  470.         ipc_answer_0(callid, ENOMEM);
  471.         ipc_answer_0(rid, ENOMEM);
  472.         return;
  473.     }
  474.    
  475.     (void) ipc_data_write_finalize(callid, buf, size);
  476.    
  477.     async_serialize_start();
  478.    
  479.     size_t off = 0;
  480.     while (off < size) {
  481.         wchar_t ch = str_decode(buf, &off, size);
  482.         write_char(cons, ch);
  483.     }
  484.    
  485.     if (cons == active_console)
  486.         curs_goto(cons->scr.position_x, cons->scr.position_y);
  487.    
  488.     async_serialize_end();
  489.    
  490.     gcons_notify_char(cons->index);
  491.     ipc_answer_1(rid, EOK, size);
  492.    
  493.     free(buf);
  494. }
  495.  
  496. static void cons_read(console_t *cons, ipc_callid_t rid, ipc_call_t *request)
  497. {
  498.     ipc_callid_t callid;
  499.     size_t size;
  500.     if (!ipc_data_read_receive(&callid, &size)) {
  501.         ipc_answer_0(callid, EINVAL);
  502.         ipc_answer_0(rid, EINVAL);
  503.         return;
  504.     }
  505.    
  506.     char *buf = (char *) malloc(size);
  507.     if (buf == NULL) {
  508.         ipc_answer_0(callid, ENOMEM);
  509.         ipc_answer_0(rid, ENOMEM);
  510.         return;
  511.     }
  512.    
  513.     async_serialize_start();
  514.    
  515.     size_t pos = 0;
  516.     console_event_t ev;
  517.     while ((keybuffer_pop(&cons->keybuffer, &ev)) && (pos < size)) {
  518.         if (ev.type == KEY_PRESS) {
  519.             buf[pos] = ev.c;
  520.             pos++;
  521.         }
  522.     }
  523.    
  524.     if (pos == size) {
  525.         (void) ipc_data_read_finalize(callid, buf, size);
  526.         ipc_answer_1(rid, EOK, size);
  527.         free(buf);
  528.     } else {
  529.         pending_input_t *pr = (pending_input_t *) malloc(sizeof(pending_input_t));
  530.         if (!pr) {
  531.             ipc_answer_0(callid, ENOMEM);
  532.             ipc_answer_0(rid, ENOMEM);
  533.             free(buf);
  534.             async_serialize_end();
  535.             return;
  536.         }
  537.        
  538.         pr->cons = cons;
  539.         pr->rid = rid;
  540.         pr->callid = callid;
  541.         pr->pos = pos;
  542.         pr->size = size;
  543.         pr->data = buf;
  544.         list_append(&pr->link, &pending_input);
  545.     }
  546.    
  547.     async_serialize_end();
  548. }
  549.  
  550. static void cons_get_event(console_t *cons, ipc_callid_t rid, ipc_call_t *request)
  551. {
  552.     async_serialize_start();
  553.    
  554.     console_event_t ev;
  555.     if (keybuffer_pop(&cons->keybuffer, &ev)) {
  556.         ipc_answer_4(rid, EOK, ev.type, ev.key, ev.mods, ev.c);
  557.     } else {
  558.         pending_input_t *pr = (pending_input_t *) malloc(sizeof(pending_input_t));
  559.         if (!pr) {
  560.             ipc_answer_0(rid, ENOMEM);
  561.             async_serialize_end();
  562.             return;
  563.         }
  564.        
  565.         pr->cons = cons;
  566.         pr->rid = rid;
  567.         pr->callid = 0;
  568.         pr->data = NULL;
  569.         list_append(&pr->link, &pending_input);
  570.     }
  571.    
  572.     async_serialize_end();
  573. }
  574.  
  575. /** Default thread for new connections */
  576. static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
  577. {
  578.     console_t *cons = NULL;
  579.    
  580.     size_t i;
  581.     for (i = 0; i < CONSOLE_COUNT; i++) {
  582.         if (i == KERNEL_CONSOLE)
  583.             continue;
  584.        
  585.         if (consoles[i].dev_handle == (dev_handle_t) IPC_GET_ARG1(*icall)) {
  586.             cons = &consoles[i];
  587.             break;
  588.         }
  589.     }
  590.    
  591.     if (cons == NULL) {
  592.         ipc_answer_0(iid, ENOENT);
  593.         return;
  594.     }
  595.    
  596.     ipc_callid_t callid;
  597.     ipc_call_t call;
  598.     ipcarg_t arg1;
  599.     ipcarg_t arg2;
  600.     ipcarg_t arg3;
  601.    
  602.     async_serialize_start();
  603.     if (cons->refcount == 0)
  604.         gcons_notify_connect(cons->index);
  605.    
  606.     cons->refcount++;
  607.    
  608.     /* Accept the connection */
  609.     ipc_answer_0(iid, EOK);
  610.    
  611.     while (true) {
  612.         async_serialize_end();
  613.         callid = async_get_call(&call);
  614.         async_serialize_start();
  615.        
  616.         arg1 = 0;
  617.         arg2 = 0;
  618.         arg3 = 0;
  619.        
  620.         switch (IPC_GET_METHOD(call)) {
  621.         case IPC_M_PHONE_HUNGUP:
  622.             cons->refcount--;
  623.             if (cons->refcount == 0)
  624.                 gcons_notify_disconnect(cons->index);
  625.             return;
  626.         case VFS_READ:
  627.             async_serialize_end();
  628.             cons_read(cons, callid, &call);
  629.             async_serialize_start();
  630.             continue;
  631.         case VFS_WRITE:
  632.             async_serialize_end();
  633.             cons_write(cons, callid, &call);
  634.             async_serialize_start();
  635.             continue;
  636.         case VFS_SYNC:
  637.             fb_pending_flush();
  638.             if (cons == active_console) {
  639.                 async_req_0_0(fb_info.phone, FB_FLUSH);
  640.                
  641.                 curs_goto(cons->scr.position_x, cons->scr.position_y);
  642.             }
  643.             break;
  644.         case CONSOLE_CLEAR:
  645.             /* Send message to fb */
  646.             if (cons == active_console)
  647.                 async_msg_0(fb_info.phone, FB_CLEAR);
  648.            
  649.             screenbuffer_clear(&cons->scr);
  650.            
  651.             break;
  652.         case CONSOLE_GOTO:
  653.             screenbuffer_goto(&cons->scr,
  654.                 IPC_GET_ARG1(call), IPC_GET_ARG2(call));
  655.             if (cons == active_console)
  656.                 curs_goto(IPC_GET_ARG1(call),
  657.                     IPC_GET_ARG2(call));
  658.             break;
  659.         case CONSOLE_GET_SIZE:
  660.             arg1 = fb_info.cols;
  661.             arg2 = fb_info.rows;
  662.             break;
  663.         case CONSOLE_SET_STYLE:
  664.             fb_pending_flush();
  665.             arg1 = IPC_GET_ARG1(call);
  666.             screenbuffer_set_style(&cons->scr, arg1);
  667.             if (cons == active_console)
  668.                 set_style(arg1);
  669.             break;
  670.         case CONSOLE_SET_COLOR:
  671.             fb_pending_flush();
  672.             arg1 = IPC_GET_ARG1(call);
  673.             arg2 = IPC_GET_ARG2(call);
  674.             arg3 = IPC_GET_ARG3(call);
  675.             screenbuffer_set_color(&cons->scr, arg1, arg2, arg3);
  676.             if (cons == active_console)
  677.                 set_color(arg1, arg2, arg3);
  678.             break;
  679.         case CONSOLE_SET_RGB_COLOR:
  680.             fb_pending_flush();
  681.             arg1 = IPC_GET_ARG1(call);
  682.             arg2 = IPC_GET_ARG2(call);
  683.             screenbuffer_set_rgb_color(&cons->scr, arg1, arg2);
  684.             if (cons == active_console)
  685.                 set_rgb_color(arg1, arg2);
  686.             break;
  687.         case CONSOLE_CURSOR_VISIBILITY:
  688.             fb_pending_flush();
  689.             arg1 = IPC_GET_ARG1(call);
  690.             cons->scr.is_cursor_visible = arg1;
  691.             if (cons == active_console)
  692.                 curs_visibility(arg1);
  693.             break;
  694.         case CONSOLE_GET_EVENT:
  695.             async_serialize_end();
  696.             cons_get_event(cons, callid, &call);
  697.             async_serialize_start();
  698.             continue;
  699.         case CONSOLE_KCON_ENABLE:
  700.             change_console(kernel_console);
  701.             break;
  702.         }
  703.         ipc_answer_3(callid, EOK, arg1, arg2, arg3);
  704.     }
  705. }
  706.  
  707. static void interrupt_received(ipc_callid_t callid, ipc_call_t *call)
  708. {
  709.     change_console(prev_console);
  710. }
  711.  
  712. static bool console_init(void)
  713. {
  714.     async_serialize_start();
  715.    
  716.     /* Connect to keyboard driver */
  717.     kbd_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
  718.     if (kbd_phone < 0) {
  719.         printf(NAME ": Failed to connect to keyboard service\n");
  720.         async_serialize_end();
  721.         return false;
  722.     }
  723.    
  724.     ipcarg_t phonehash;
  725.     if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, &phonehash) != 0) {
  726.         printf(NAME ": Failed to create callback from keyboard service\n");
  727.         async_serialize_end();
  728.         return false;
  729.     }
  730.    
  731.     async_set_pending(process_pending_input);
  732.     async_new_connection(phonehash, 0, NULL, keyboard_events);
  733.    
  734.     /* Connect to framebuffer driver */
  735.     fb_info.phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_VIDEO, 0, 0);
  736.     if (fb_info.phone < 0) {
  737.         printf(NAME ": Failed to connect to video service\n");
  738.         async_serialize_end();
  739.         return -1;
  740.     }
  741.    
  742.     /* Register driver */
  743.     int rc = devmap_driver_register(NAME, client_connection);
  744.     if (rc < 0) {
  745.         printf(NAME ": Unable to register driver (%d)\n", rc);
  746.         async_serialize_end();
  747.         return false;
  748.     }
  749.    
  750.     /* Initialize gcons */
  751.     gcons_init(fb_info.phone);
  752.    
  753.     /* Synchronize, the gcons could put something in queue */
  754.     async_req_0_0(fb_info.phone, FB_FLUSH);
  755.     async_req_0_2(fb_info.phone, FB_GET_CSIZE, &fb_info.cols, &fb_info.rows);
  756.    
  757.     /* Set up shared memory buffer. */
  758.     size_t ib_size = sizeof(keyfield_t) * fb_info.cols * fb_info.rows;
  759.     interbuffer = as_get_mappable_page(ib_size);
  760.    
  761.     if (as_area_create(interbuffer, ib_size, AS_AREA_READ |
  762.         AS_AREA_WRITE | AS_AREA_CACHEABLE) != interbuffer)
  763.         interbuffer = NULL;
  764.    
  765.     if (interbuffer) {
  766.         if (ipc_share_out_start(fb_info.phone, interbuffer,
  767.             AS_AREA_READ) != EOK) {
  768.             as_area_destroy(interbuffer);
  769.             interbuffer = NULL;
  770.         }
  771.     }
  772.    
  773.     fb_pending.cnt = 0;
  774.    
  775.     /* Inititalize consoles */
  776.     size_t i;
  777.     for (i = 0; i < CONSOLE_COUNT; i++) {
  778.         if (i != KERNEL_CONSOLE) {
  779.             if (screenbuffer_init(&consoles[i].scr,
  780.                 fb_info.cols, fb_info.rows) == NULL) {
  781.                 printf(NAME ": Unable to allocate screen buffer %u\n", i);
  782.                 async_serialize_end();
  783.                 return false;
  784.             }
  785.             screenbuffer_clear(&consoles[i].scr);
  786.             keybuffer_init(&consoles[i].keybuffer);
  787.             consoles[i].index = i;
  788.             consoles[i].refcount = 0;
  789.            
  790.             char vc[MAX_DEVICE_NAME];
  791.             snprintf(vc, MAX_DEVICE_NAME, "vc%u", i);
  792.            
  793.             if (devmap_device_register(vc, &consoles[i].dev_handle) != EOK) {
  794.                 devmap_hangup_phone(DEVMAP_DRIVER);
  795.                 printf(NAME ": Unable to register device %s\n", vc);
  796.                 async_serialize_end();
  797.                 return false;
  798.             }
  799.         }
  800.     }
  801.    
  802.     /* Disable kernel output to the console */
  803.     __SYSCALL0(SYS_DEBUG_DISABLE_CONSOLE);
  804.    
  805.     /* Initialize the screen */
  806.     gcons_redraw_console();
  807.     set_rgb_color(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
  808.     screen_clear();
  809.     curs_goto(0, 0);
  810.     curs_visibility(active_console->scr.is_cursor_visible);
  811.    
  812.     /* Receive kernel notifications */
  813.     if (event_subscribe(EVENT_KCONSOLE, 0) != EOK)
  814.         printf(NAME ": Error registering kconsole notifications\n");
  815.    
  816.     async_set_interrupt_received(interrupt_received);
  817.    
  818.     async_serialize_end();
  819.     return true;
  820. }
  821.  
  822. int main(int argc, char *argv[])
  823. {
  824.     printf(NAME ": HelenOS Console service\n");
  825.    
  826.     if (!console_init())
  827.         return -1;
  828.    
  829.     printf(NAME ": Accepting connections\n");
  830.     async_manager();
  831.    
  832.     return 0;
  833. }
  834.  
  835. /** @}
  836.  */
  837.