source: mainline/uspace/srv/console/console.c@ 8c6337d

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 8c6337d was 8c6337d, checked in by Martin Decky <martin@…>, 17 years ago

make sure the cursor is already off when switching to kernel console (use synchronous messaging)
  • Property mode set to 100644
File size: 13.0 KB
RevLine 
[51c1b003]1/*
[df4ed85]2 * Copyright (c) 2006 Josef Cejka
[51c1b003]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 */
[ce5bcb4]28
[231a60a]29/** @addtogroup console
[ce5bcb4]30 * @{
31 */
32/** @file
33 */
34
[3209923]35#include <libc.h>
[79460ae]36#include <fb.h>
[51c1b003]37#include <ipc/ipc.h>
[15039b67]38#include <keys.h>
[79460ae]39#include <ipc/fb.h>
[51c1b003]40#include <ipc/services.h>
41#include <errno.h>
[79460ae]42#include <key_buffer.h>
43#include <console.h>
[eaf34f7]44#include <unistd.h>
45#include <async.h>
[cf28036c]46#include <libadt/fifo.h>
[3993b3d]47#include <screenbuffer.h>
[2def788]48#include <sys/mman.h>
[271b540]49#include <stdio.h>
[79460ae]50
[e1c4849]51#include "gcons.h"
52
[cf28036c]53#define MAX_KEYREQUESTS_BUFFERED 32
[51c1b003]54
[271b540]55#define NAME "console"
[51c1b003]56
[e87e18f]57/** Index of currently used virtual console.
58 */
[390a678]59int active_console = 0;
[eaf34f7]60
[e87e18f]61/** Information about framebuffer
62 */
[3993b3d]63struct {
64 int phone; /**< Framebuffer phone */
[bb51e9a8]65 ipcarg_t rows; /**< Framebuffer rows */
66 ipcarg_t cols; /**< Framebuffer columns */
[3993b3d]67} fb_info;
68
[79460ae]69typedef struct {
[e87e18f]70 keybuffer_t keybuffer; /**< Buffer for incoming keys. */
[00bb6965]71 /** Buffer for unsatisfied request for keys. */
72 FIFO_CREATE_STATIC(keyrequests, ipc_callid_t,
73 MAX_KEYREQUESTS_BUFFERED);
[e87e18f]74 int keyrequest_counter; /**< Number of requests in buffer. */
75 int client_phone; /**< Phone to connected client. */
[00bb6965]76 int used; /**< 1 if this virtual console is
77 * connected to some client.*/
78 screenbuffer_t screenbuffer; /**< Screenbuffer for saving screen
79 * contents and related settings. */
[79460ae]80} connection_t;
81
[00bb6965]82static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual
83 * consoles */
84static keyfield_t *interbuffer = NULL; /**< Pointer to memory shared
85 * with framebufer used for
86 * faster virtual console
[c738d65]87 * switching */
[429acb9]88
[bb51e9a8]89
[e87e18f]90/** Find unused virtual console.
91 *
92 */
[d32af35]93static int find_free_connection(void)
[79460ae]94{
[c738d65]95 int i;
[79460ae]96
[c738d65]97 for (i = 0; i < CONSOLE_COUNT; i++) {
[d32af35]98 if (!connections[i].used)
[79460ae]99 return i;
100 }
[d32af35]101 return -1;
[79460ae]102}
103
[429acb9]104static void clrscr(void)
105{
[0cc4313]106 async_msg_0(fb_info.phone, FB_CLEAR);
[429acb9]107}
108
[8c6337d]109static void curs_visibility(bool visible)
[429acb9]110{
[8c6337d]111 async_msg_1(fb_info.phone, FB_CURSOR_VISIBILITY, visible);
112}
113
114static void curs_hide_sync(void)
115{
116 ipc_call_sync_1_0(fb_info.phone, FB_CURSOR_VISIBILITY, false);
[429acb9]117}
118
119static void curs_goto(int row, int col)
120{
[085bd54]121 async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
[429acb9]122}
123
124static void set_style(style_t *style)
125{
[00bb6965]126 async_msg_2(fb_info.phone, FB_SET_STYLE, style->fg_color,
[01f5e17]127 style->bg_color);
[429acb9]128}
129
130static void set_style_col(int fgcolor, int bgcolor)
131{
[085bd54]132 async_msg_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
[429acb9]133}
134
135static void prtchr(char c, int row, int col)
136{
[085bd54]137 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
[429acb9]138}
139
[10569b1]140/** Check key and process special keys.
141 *
[96858e8]142 *
143 */
[10569b1]144static void write_char(int console, char key)
145{
146 screenbuffer_t *scr = &(connections[console].screenbuffer);
147
148 switch (key) {
[00bb6965]149 case '\n':
[c738d65]150 scr->position_y++;
151 scr->position_x = 0;
[00bb6965]152 break;
153 case '\r':
154 break;
155 case '\t':
156 scr->position_x += 8;
157 scr->position_x -= scr->position_x % 8;
158 break;
159 case '\b':
160 if (scr->position_x == 0)
[10569b1]161 break;
[00bb6965]162 scr->position_x--;
163 if (console == active_console)
164 prtchr(' ', scr->position_y, scr->position_x);
165 screenbuffer_putchar(scr, ' ');
166 break;
167 default:
168 if (console == active_console)
169 prtchr(key, scr->position_y, scr->position_x);
[10569b1]170
[00bb6965]171 screenbuffer_putchar(scr, key);
172 scr->position_x++;
[10569b1]173 }
174
175 scr->position_y += (scr->position_x >= scr->size_x);
176
177 if (scr->position_y >= scr->size_y) {
178 scr->position_y = scr->size_y - 1;
[c891ed39]179 screenbuffer_clear_line(scr, scr->top_line);
[c738d65]180 scr->top_line = (scr->top_line + 1) % scr->size_y;
[b1f51f0]181 if (console == active_console)
[0cc4313]182 async_msg_1(fb_info.phone, FB_SCROLL, 1);
[10569b1]183 }
184
185 scr->position_x = scr->position_x % scr->size_x;
[bd929cfb]186
[429acb9]187 if (console == active_console)
188 curs_goto(scr->position_y, scr->position_x);
[10569b1]189
190}
191
[429acb9]192/** Switch to new console */
193static void change_console(int newcons)
194{
195 connection_t *conn;
[bd02038]196 int i, j, rc;
[6d5005c]197 keyfield_t *field;
198 style_t *style;
[76fca31]199
[429acb9]200 if (newcons == active_console)
201 return;
[76fca31]202
[a7d2d78]203 if (newcons == KERNEL_CONSOLE) {
[1f83244]204 async_serialize_start();
[8c6337d]205 curs_hide_sync();
[76fca31]206 gcons_in_kernel();
[1f83244]207 async_serialize_end();
[76fca31]208
209 if (__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE))
210 active_console = KERNEL_CONSOLE;
211 else
[8c6337d]212 newcons = active_console;
[01f5e17]213 }
[6d5005c]214
[76fca31]215 if (newcons != KERNEL_CONSOLE) {
216 async_serialize_start();
217
218 if (active_console == KERNEL_CONSOLE)
219 gcons_redraw_console();
220
221 active_console = newcons;
222 gcons_change_console(newcons);
223 conn = &connections[active_console];
224
[6d5005c]225 set_style(&conn->screenbuffer.style);
[8c6337d]226 curs_visibility(false);
[76fca31]227 if (interbuffer) {
228 for (i = 0; i < conn->screenbuffer.size_x; i++)
229 for (j = 0; j < conn->screenbuffer.size_y; j++) {
230 unsigned int size_x;
231
232 size_x = conn->screenbuffer.size_x;
233 interbuffer[i + j * size_x] =
234 *get_field_at(&conn->screenbuffer, i, j);
235 }
236 /* This call can preempt, but we are already at the end */
237 rc = async_req_0_0(fb_info.phone, FB_DRAW_TEXT_DATA);
238 }
239
240 if ((!interbuffer) || (rc != 0)) {
241 set_style(&conn->screenbuffer.style);
242 clrscr();
243 style = &conn->screenbuffer.style;
244
245 for (j = 0; j < conn->screenbuffer.size_y; j++)
246 for (i = 0; i < conn->screenbuffer.size_x; i++) {
247 field = get_field_at(&conn->screenbuffer, i, j);
248 if (!style_same(*style, field->style))
249 set_style(&field->style);
250 style = &field->style;
251 if ((field->character == ' ') &&
252 (style_same(field->style,
253 conn->screenbuffer.style)))
254 continue;
255
256 prtchr(field->character, j, i);
257 }
258 }
259
260 curs_goto(conn->screenbuffer.position_y,
261 conn->screenbuffer.position_x);
262 curs_visibility(conn->screenbuffer.is_cursor_visible);
263
264 async_serialize_end();
[429acb9]265 }
266}
[10569b1]267
[e87e18f]268/** Handler for keyboard */
[eaf34f7]269static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
[51c1b003]270{
[eaf34f7]271 ipc_callid_t callid;
[51c1b003]272 ipc_call_t call;
[eaf34f7]273 int retval;
[dd641e3]274 int c;
[c1d2c9d]275 connection_t *conn;
[1f83244]276 int newcon;
[bb51e9a8]277
[eaf34f7]278 /* Ignore parameters, the connection is alread opened */
279 while (1) {
280 callid = async_get_call(&call);
281 switch (IPC_GET_METHOD(call)) {
282 case IPC_M_PHONE_HUNGUP:
283 /* TODO: Handle hangup */
284 return;
[1f83244]285 case KBD_MS_LEFT:
286 newcon = gcons_mouse_btn(IPC_GET_ARG1(call));
287 if (newcon != -1)
288 change_console(newcon);
[501a8ba]289 retval = 0;
[1f83244]290 break;
[830ac99]291 case KBD_MS_MOVE:
[00bb6965]292 gcons_mouse_move(IPC_GET_ARG1(call),
[01f5e17]293 IPC_GET_ARG2(call));
[501a8ba]294 retval = 0;
[830ac99]295 break;
[eaf34f7]296 case KBD_PUSHCHAR:
297 /* got key from keyboard driver */
298 retval = 0;
[a805c24]299 c = IPC_GET_ARG1(call);
[eaf34f7]300 /* switch to another virtual console */
[cf28036c]301
[c1d2c9d]302 conn = &connections[active_console];
[00bb6965]303/*
304 * if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 +
305 * CONSOLE_COUNT)) {
306 */
[dd641e3]307 if ((c >= 0x101) && (c < 0x101 + CONSOLE_COUNT)) {
308 if (c == 0x112)
[a7d2d78]309 change_console(KERNEL_CONSOLE);
[429acb9]310 else
[dd641e3]311 change_console(c - 0x101);
[eaf34f7]312 break;
313 }
[cf28036c]314
315 /* if client is awaiting key, send it */
[c1d2c9d]316 if (conn->keyrequest_counter > 0) {
317 conn->keyrequest_counter--;
[b74959bd]318 ipc_answer_1(fifo_pop(conn->keyrequests), EOK,
319 c);
[cf28036c]320 break;
321 }
322
[c1d2c9d]323 keybuffer_push(&conn->keybuffer, c);
[501a8ba]324 retval = 0;
[ad123964]325
[eaf34f7]326 break;
327 default:
[1029d3d3]328 retval = ENOENT;
[085bd54]329 }
[b74959bd]330 ipc_answer_0(callid, retval);
[eaf34f7]331 }
332}
333
334/** Default thread for new connections */
[b1f51f0]335static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
[eaf34f7]336{
[51c1b003]337 ipc_callid_t callid;
[eaf34f7]338 ipc_call_t call;
339 int consnum;
[3756912]340 ipcarg_t arg1, arg2;
[e9073f2]341 connection_t *conn;
[eaf34f7]342
[d32af35]343 if ((consnum = find_free_connection()) == -1) {
[b74959bd]344 ipc_answer_0(iid, ELIMIT);
[eaf34f7]345 return;
346 }
[e9073f2]347 conn = &connections[consnum];
[085bd54]348 conn->used = 1;
[a7d2d78]349
[085bd54]350 async_serialize_start();
[a7d2d78]351 gcons_notify_connect(consnum);
[38c706cc]352 conn->client_phone = IPC_GET_ARG5(*icall);
[e9073f2]353 screenbuffer_clear(&conn->screenbuffer);
[10569b1]354
[eaf34f7]355 /* Accept the connection */
[b74959bd]356 ipc_answer_0(iid, EOK);
[085bd54]357
[eaf34f7]358 while (1) {
[085bd54]359 async_serialize_end();
[eaf34f7]360 callid = async_get_call(&call);
[085bd54]361 async_serialize_start();
362
[96858e8]363 arg1 = 0;
364 arg2 = 0;
[eaf34f7]365 switch (IPC_GET_METHOD(call)) {
366 case IPC_M_PHONE_HUNGUP:
[e9073f2]367 gcons_notify_disconnect(consnum);
[085bd54]368
[e9073f2]369 /* Answer all pending requests */
370 while (conn->keyrequest_counter > 0) {
371 conn->keyrequest_counter--;
[b74959bd]372 ipc_answer_0(fifo_pop(conn->keyrequests),
373 ENOENT);
[e9073f2]374 break;
375 }
[0d11fc1c]376 conn->used = 0;
[eaf34f7]377 return;
378 case CONSOLE_PUTCHAR:
[10569b1]379 write_char(consnum, IPC_GET_ARG1(call));
[d6cc453]380 gcons_notify_char(consnum);
[ad123964]381 break;
382 case CONSOLE_CLEAR:
[3993b3d]383 /* Send message to fb */
384 if (consnum == active_console) {
[0cc4313]385 async_msg_0(fb_info.phone, FB_CLEAR);
[3993b3d]386 }
387
[e9073f2]388 screenbuffer_clear(&conn->screenbuffer);
[3993b3d]389
[eaf34f7]390 break;
[ad123964]391 case CONSOLE_GOTO:
[00bb6965]392 screenbuffer_goto(&conn->screenbuffer,
[01f5e17]393 IPC_GET_ARG2(call), IPC_GET_ARG1(call));
[6118e5f6]394 if (consnum == active_console)
[00bb6965]395 curs_goto(IPC_GET_ARG1(call),
[01f5e17]396 IPC_GET_ARG2(call));
[ad123964]397 break;
[3756912]398 case CONSOLE_GETSIZE:
[d6cc453]399 arg1 = fb_info.rows;
400 arg2 = fb_info.cols;
[3756912]401 break;
[0c6984e]402 case CONSOLE_FLUSH:
[a3d2939]403 if (consnum == active_console)
[0cc4313]404 async_req_0_0(fb_info.phone, FB_FLUSH);
[a9bd960c]405 break;
406 case CONSOLE_SET_STYLE:
407 arg1 = IPC_GET_ARG1(call);
408 arg2 = IPC_GET_ARG2(call);
[01f5e17]409 screenbuffer_set_style(&conn->screenbuffer, arg1,
410 arg2);
[a9bd960c]411 if (consnum == active_console)
[429acb9]412 set_style_col(arg1, arg2);
[0c6984e]413 break;
[a8b2b5b2]414 case CONSOLE_CURSOR_VISIBILITY:
415 arg1 = IPC_GET_ARG1(call);
[e9073f2]416 conn->screenbuffer.is_cursor_visible = arg1;
[a8b2b5b2]417 if (consnum == active_console)
418 curs_visibility(arg1);
419 break;
[eaf34f7]420 case CONSOLE_GETCHAR:
[e9073f2]421 if (keybuffer_empty(&conn->keybuffer)) {
[cf28036c]422 /* buffer is empty -> store request */
[00bb6965]423 if (conn->keyrequest_counter <
424 MAX_KEYREQUESTS_BUFFERED) {
[e9073f2]425 fifo_push(conn->keyrequests, callid);
426 conn->keyrequest_counter++;
[cf28036c]427 } else {
[00bb6965]428 /*
429 * No key available and too many
430 * requests => fail.
431 */
[b74959bd]432 ipc_answer_0(callid, ELIMIT);
[cf28036c]433 }
434 continue;
[00bb6965]435 }
[18c485a]436 int ch;
437 keybuffer_pop(&conn->keybuffer, &ch);
438 arg1 = ch;
[eaf34f7]439 break;
440 }
[b74959bd]441 ipc_answer_2(callid, EOK, arg1, arg2);
[eaf34f7]442 }
443}
444
445int main(int argc, char *argv[])
446{
[271b540]447 printf(NAME ": HelenOS Console service\n");
448
[eaf34f7]449 ipcarg_t phonehash;
[501a8ba]450 int kbd_phone;
[79460ae]451 int i;
[da0c91e7]452
453 async_set_client_connection(client_connection);
[51c1b003]454
455 /* Connect to keyboard driver */
456
[b61d47d]457 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
[c738d65]458 while (kbd_phone < 0) {
[eaf34f7]459 usleep(10000);
[b61d47d]460 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
[00bb6965]461 }
[51c1b003]462
[38c706cc]463 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
[51c1b003]464 return -1;
[290c0db]465 async_new_connection(phonehash, 0, NULL, keyboard_events);
466
[51c1b003]467 /* Connect to framebuffer driver */
[b61d47d]468 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
[c738d65]469 while (fb_info.phone < 0) {
[3993b3d]470 usleep(10000);
[b61d47d]471 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
[3993b3d]472 }
[429acb9]473
[e1c4849]474 /* Initialize gcons */
475 gcons_init(fb_info.phone);
476 /* Synchronize, the gcons can have something in queue */
[0cc4313]477 async_req_0_0(fb_info.phone, FB_FLUSH);
[3993b3d]478
[0cc4313]479 async_req_0_2(fb_info.phone, FB_GET_CSIZE, &fb_info.rows,
[01f5e17]480 &fb_info.cols);
[429acb9]481 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
482 clrscr();
[3993b3d]483
484 /* Init virtual consoles */
[79460ae]485 for (i = 0; i < CONSOLE_COUNT; i++) {
486 connections[i].used = 0;
[01f5e17]487 keybuffer_init(&connections[i].keybuffer);
[cf28036c]488
[01f5e17]489 connections[i].keyrequests.head = 0;
490 connections[i].keyrequests.tail = 0;
[cf28036c]491 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
492 connections[i].keyrequest_counter = 0;
[3993b3d]493
[01f5e17]494 if (screenbuffer_init(&connections[i].screenbuffer,
495 fb_info.cols, fb_info.rows) == NULL) {
[c738d65]496 /* FIXME: handle error */
[3993b3d]497 return -1;
498 }
[79460ae]499 }
[d32af35]500 connections[KERNEL_CONSOLE].used = 1;
[51c1b003]501
[c738d65]502 interbuffer = mmap(NULL,
[01f5e17]503 sizeof(keyfield_t) * fb_info.cols * fb_info.rows,
504 PROTO_READ | PROTO_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
[c738d65]505 if (!interbuffer) {
[215e375]506 if (ipc_share_out_start(fb_info.phone, interbuffer,
[27d293a]507 AS_AREA_READ) != EOK) {
[01f5e17]508 munmap(interbuffer,
509 sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
[390a678]510 interbuffer = NULL;
511 }
512 }
[a805c24]513
[c738d65]514 curs_goto(0, 0);
[01f5e17]515 curs_visibility(
516 connections[active_console].screenbuffer.is_cursor_visible);
[10569b1]517
[b1f51f0]518 /* Register at NS */
[271b540]519 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
[51c1b003]520 return -1;
521
[271b540]522 // FIXME: avoid connectiong to itself, keep using klog
523 // printf(NAME ": Accepting connections\n");
[eaf34f7]524 async_manager();
[51c1b003]525
526 return 0;
527}
[ce5bcb4]528
529/** @}
530 */
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