source: mainline/uspace/srv/console/console.c@ 76fca31

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 76fca31 was 76fca31, checked in by Martin Decky <martin@…>, 17 years ago

kconsole is optional
kernel & uspace framebuffer rewrite with speedups (some things are slightly broken yet)
  • Property mode set to 100644
File size: 12.9 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
109static void curs_visibility(int v)
110{
[0cc4313]111 async_msg_1(fb_info.phone, FB_CURSOR_VISIBILITY, v);
[429acb9]112}
113
114static void curs_goto(int row, int col)
115{
[085bd54]116 async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
[429acb9]117}
118
119static void set_style(style_t *style)
120{
[00bb6965]121 async_msg_2(fb_info.phone, FB_SET_STYLE, style->fg_color,
[01f5e17]122 style->bg_color);
[429acb9]123}
124
125static void set_style_col(int fgcolor, int bgcolor)
126{
[085bd54]127 async_msg_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
[429acb9]128}
129
130static void prtchr(char c, int row, int col)
131{
[085bd54]132 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
[429acb9]133}
134
[10569b1]135/** Check key and process special keys.
136 *
[96858e8]137 *
138 */
[10569b1]139static void write_char(int console, char key)
140{
141 screenbuffer_t *scr = &(connections[console].screenbuffer);
142
143 switch (key) {
[00bb6965]144 case '\n':
[c738d65]145 scr->position_y++;
146 scr->position_x = 0;
[00bb6965]147 break;
148 case '\r':
149 break;
150 case '\t':
151 scr->position_x += 8;
152 scr->position_x -= scr->position_x % 8;
153 break;
154 case '\b':
155 if (scr->position_x == 0)
[10569b1]156 break;
[00bb6965]157 scr->position_x--;
158 if (console == active_console)
159 prtchr(' ', scr->position_y, scr->position_x);
160 screenbuffer_putchar(scr, ' ');
161 break;
162 default:
163 if (console == active_console)
164 prtchr(key, scr->position_y, scr->position_x);
[10569b1]165
[00bb6965]166 screenbuffer_putchar(scr, key);
167 scr->position_x++;
[10569b1]168 }
169
170 scr->position_y += (scr->position_x >= scr->size_x);
171
172 if (scr->position_y >= scr->size_y) {
173 scr->position_y = scr->size_y - 1;
[c891ed39]174 screenbuffer_clear_line(scr, scr->top_line);
[c738d65]175 scr->top_line = (scr->top_line + 1) % scr->size_y;
[b1f51f0]176 if (console == active_console)
[0cc4313]177 async_msg_1(fb_info.phone, FB_SCROLL, 1);
[10569b1]178 }
179
180 scr->position_x = scr->position_x % scr->size_x;
[bd929cfb]181
[429acb9]182 if (console == active_console)
183 curs_goto(scr->position_y, scr->position_x);
[10569b1]184
185}
186
[429acb9]187/** Switch to new console */
188static void change_console(int newcons)
189{
190 connection_t *conn;
[bd02038]191 int i, j, rc;
[6d5005c]192 keyfield_t *field;
193 style_t *style;
[76fca31]194
[429acb9]195 if (newcons == active_console)
196 return;
[76fca31]197
[a7d2d78]198 if (newcons == KERNEL_CONSOLE) {
[1f83244]199 async_serialize_start();
[76fca31]200 curs_visibility(0);
201 gcons_in_kernel();
[1f83244]202 async_serialize_end();
[76fca31]203
204 if (__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE))
205 active_console = KERNEL_CONSOLE;
206 else
207 newcons == active_console;
[01f5e17]208 }
[6d5005c]209
[76fca31]210 if (newcons != KERNEL_CONSOLE) {
211 async_serialize_start();
212
213 if (active_console == KERNEL_CONSOLE)
214 gcons_redraw_console();
215
216 active_console = newcons;
217 gcons_change_console(newcons);
218 conn = &connections[active_console];
219
[6d5005c]220 set_style(&conn->screenbuffer.style);
[76fca31]221 curs_visibility(0);
222 if (interbuffer) {
223 for (i = 0; i < conn->screenbuffer.size_x; i++)
224 for (j = 0; j < conn->screenbuffer.size_y; j++) {
225 unsigned int size_x;
226
227 size_x = conn->screenbuffer.size_x;
228 interbuffer[i + j * size_x] =
229 *get_field_at(&conn->screenbuffer, i, j);
230 }
231 /* This call can preempt, but we are already at the end */
232 rc = async_req_0_0(fb_info.phone, FB_DRAW_TEXT_DATA);
233 }
234
235 if ((!interbuffer) || (rc != 0)) {
236 set_style(&conn->screenbuffer.style);
237 clrscr();
238 style = &conn->screenbuffer.style;
239
240 for (j = 0; j < conn->screenbuffer.size_y; j++)
241 for (i = 0; i < conn->screenbuffer.size_x; i++) {
242 field = get_field_at(&conn->screenbuffer, i, j);
243 if (!style_same(*style, field->style))
244 set_style(&field->style);
245 style = &field->style;
246 if ((field->character == ' ') &&
247 (style_same(field->style,
248 conn->screenbuffer.style)))
249 continue;
250
251 prtchr(field->character, j, i);
252 }
253 }
254
255 curs_goto(conn->screenbuffer.position_y,
256 conn->screenbuffer.position_x);
257 curs_visibility(conn->screenbuffer.is_cursor_visible);
258
259 async_serialize_end();
[429acb9]260 }
261}
[10569b1]262
[e87e18f]263/** Handler for keyboard */
[eaf34f7]264static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
[51c1b003]265{
[eaf34f7]266 ipc_callid_t callid;
[51c1b003]267 ipc_call_t call;
[eaf34f7]268 int retval;
[dd641e3]269 int c;
[c1d2c9d]270 connection_t *conn;
[1f83244]271 int newcon;
[bb51e9a8]272
[eaf34f7]273 /* Ignore parameters, the connection is alread opened */
274 while (1) {
275 callid = async_get_call(&call);
276 switch (IPC_GET_METHOD(call)) {
277 case IPC_M_PHONE_HUNGUP:
278 /* TODO: Handle hangup */
279 return;
[1f83244]280 case KBD_MS_LEFT:
281 newcon = gcons_mouse_btn(IPC_GET_ARG1(call));
282 if (newcon != -1)
283 change_console(newcon);
[501a8ba]284 retval = 0;
[1f83244]285 break;
[830ac99]286 case KBD_MS_MOVE:
[00bb6965]287 gcons_mouse_move(IPC_GET_ARG1(call),
[01f5e17]288 IPC_GET_ARG2(call));
[501a8ba]289 retval = 0;
[830ac99]290 break;
[eaf34f7]291 case KBD_PUSHCHAR:
292 /* got key from keyboard driver */
293 retval = 0;
[a805c24]294 c = IPC_GET_ARG1(call);
[eaf34f7]295 /* switch to another virtual console */
[cf28036c]296
[c1d2c9d]297 conn = &connections[active_console];
[00bb6965]298/*
299 * if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 +
300 * CONSOLE_COUNT)) {
301 */
[dd641e3]302 if ((c >= 0x101) && (c < 0x101 + CONSOLE_COUNT)) {
303 if (c == 0x112)
[a7d2d78]304 change_console(KERNEL_CONSOLE);
[429acb9]305 else
[dd641e3]306 change_console(c - 0x101);
[eaf34f7]307 break;
308 }
[cf28036c]309
310 /* if client is awaiting key, send it */
[c1d2c9d]311 if (conn->keyrequest_counter > 0) {
312 conn->keyrequest_counter--;
[b74959bd]313 ipc_answer_1(fifo_pop(conn->keyrequests), EOK,
314 c);
[cf28036c]315 break;
316 }
317
[c1d2c9d]318 keybuffer_push(&conn->keybuffer, c);
[501a8ba]319 retval = 0;
[ad123964]320
[eaf34f7]321 break;
322 default:
[1029d3d3]323 retval = ENOENT;
[085bd54]324 }
[b74959bd]325 ipc_answer_0(callid, retval);
[eaf34f7]326 }
327}
328
329/** Default thread for new connections */
[b1f51f0]330static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
[eaf34f7]331{
[51c1b003]332 ipc_callid_t callid;
[eaf34f7]333 ipc_call_t call;
334 int consnum;
[3756912]335 ipcarg_t arg1, arg2;
[e9073f2]336 connection_t *conn;
[eaf34f7]337
[d32af35]338 if ((consnum = find_free_connection()) == -1) {
[b74959bd]339 ipc_answer_0(iid, ELIMIT);
[eaf34f7]340 return;
341 }
[e9073f2]342 conn = &connections[consnum];
[085bd54]343 conn->used = 1;
[a7d2d78]344
[085bd54]345 async_serialize_start();
[a7d2d78]346 gcons_notify_connect(consnum);
[38c706cc]347 conn->client_phone = IPC_GET_ARG5(*icall);
[e9073f2]348 screenbuffer_clear(&conn->screenbuffer);
[10569b1]349
[eaf34f7]350 /* Accept the connection */
[b74959bd]351 ipc_answer_0(iid, EOK);
[085bd54]352
[eaf34f7]353 while (1) {
[085bd54]354 async_serialize_end();
[eaf34f7]355 callid = async_get_call(&call);
[085bd54]356 async_serialize_start();
357
[96858e8]358 arg1 = 0;
359 arg2 = 0;
[eaf34f7]360 switch (IPC_GET_METHOD(call)) {
361 case IPC_M_PHONE_HUNGUP:
[e9073f2]362 gcons_notify_disconnect(consnum);
[085bd54]363
[e9073f2]364 /* Answer all pending requests */
365 while (conn->keyrequest_counter > 0) {
366 conn->keyrequest_counter--;
[b74959bd]367 ipc_answer_0(fifo_pop(conn->keyrequests),
368 ENOENT);
[e9073f2]369 break;
370 }
[0d11fc1c]371 conn->used = 0;
[eaf34f7]372 return;
373 case CONSOLE_PUTCHAR:
[10569b1]374 write_char(consnum, IPC_GET_ARG1(call));
[d6cc453]375 gcons_notify_char(consnum);
[ad123964]376 break;
377 case CONSOLE_CLEAR:
[3993b3d]378 /* Send message to fb */
379 if (consnum == active_console) {
[0cc4313]380 async_msg_0(fb_info.phone, FB_CLEAR);
[3993b3d]381 }
382
[e9073f2]383 screenbuffer_clear(&conn->screenbuffer);
[3993b3d]384
[eaf34f7]385 break;
[ad123964]386 case CONSOLE_GOTO:
[00bb6965]387 screenbuffer_goto(&conn->screenbuffer,
[01f5e17]388 IPC_GET_ARG2(call), IPC_GET_ARG1(call));
[6118e5f6]389 if (consnum == active_console)
[00bb6965]390 curs_goto(IPC_GET_ARG1(call),
[01f5e17]391 IPC_GET_ARG2(call));
[ad123964]392 break;
[3756912]393 case CONSOLE_GETSIZE:
[d6cc453]394 arg1 = fb_info.rows;
395 arg2 = fb_info.cols;
[3756912]396 break;
[0c6984e]397 case CONSOLE_FLUSH:
[a3d2939]398 if (consnum == active_console)
[0cc4313]399 async_req_0_0(fb_info.phone, FB_FLUSH);
[a9bd960c]400 break;
401 case CONSOLE_SET_STYLE:
402 arg1 = IPC_GET_ARG1(call);
403 arg2 = IPC_GET_ARG2(call);
[01f5e17]404 screenbuffer_set_style(&conn->screenbuffer, arg1,
405 arg2);
[a9bd960c]406 if (consnum == active_console)
[429acb9]407 set_style_col(arg1, arg2);
[0c6984e]408 break;
[a8b2b5b2]409 case CONSOLE_CURSOR_VISIBILITY:
410 arg1 = IPC_GET_ARG1(call);
[e9073f2]411 conn->screenbuffer.is_cursor_visible = arg1;
[a8b2b5b2]412 if (consnum == active_console)
413 curs_visibility(arg1);
414 break;
[eaf34f7]415 case CONSOLE_GETCHAR:
[e9073f2]416 if (keybuffer_empty(&conn->keybuffer)) {
[cf28036c]417 /* buffer is empty -> store request */
[00bb6965]418 if (conn->keyrequest_counter <
419 MAX_KEYREQUESTS_BUFFERED) {
[e9073f2]420 fifo_push(conn->keyrequests, callid);
421 conn->keyrequest_counter++;
[cf28036c]422 } else {
[00bb6965]423 /*
424 * No key available and too many
425 * requests => fail.
426 */
[b74959bd]427 ipc_answer_0(callid, ELIMIT);
[cf28036c]428 }
429 continue;
[00bb6965]430 }
[18c485a]431 int ch;
432 keybuffer_pop(&conn->keybuffer, &ch);
433 arg1 = ch;
[eaf34f7]434 break;
435 }
[b74959bd]436 ipc_answer_2(callid, EOK, arg1, arg2);
[eaf34f7]437 }
438}
439
440int main(int argc, char *argv[])
441{
[271b540]442 printf(NAME ": HelenOS Console service\n");
443
[eaf34f7]444 ipcarg_t phonehash;
[501a8ba]445 int kbd_phone;
[79460ae]446 int i;
[da0c91e7]447
448 async_set_client_connection(client_connection);
[51c1b003]449
450 /* Connect to keyboard driver */
451
[b61d47d]452 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
[c738d65]453 while (kbd_phone < 0) {
[eaf34f7]454 usleep(10000);
[b61d47d]455 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
[00bb6965]456 }
[51c1b003]457
[38c706cc]458 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
[51c1b003]459 return -1;
[290c0db]460 async_new_connection(phonehash, 0, NULL, keyboard_events);
461
[51c1b003]462 /* Connect to framebuffer driver */
[b61d47d]463 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
[c738d65]464 while (fb_info.phone < 0) {
[3993b3d]465 usleep(10000);
[b61d47d]466 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
[3993b3d]467 }
[429acb9]468
[e1c4849]469 /* Initialize gcons */
470 gcons_init(fb_info.phone);
471 /* Synchronize, the gcons can have something in queue */
[0cc4313]472 async_req_0_0(fb_info.phone, FB_FLUSH);
[3993b3d]473
[0cc4313]474 async_req_0_2(fb_info.phone, FB_GET_CSIZE, &fb_info.rows,
[01f5e17]475 &fb_info.cols);
[429acb9]476 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
477 clrscr();
[3993b3d]478
479 /* Init virtual consoles */
[79460ae]480 for (i = 0; i < CONSOLE_COUNT; i++) {
481 connections[i].used = 0;
[01f5e17]482 keybuffer_init(&connections[i].keybuffer);
[cf28036c]483
[01f5e17]484 connections[i].keyrequests.head = 0;
485 connections[i].keyrequests.tail = 0;
[cf28036c]486 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
487 connections[i].keyrequest_counter = 0;
[3993b3d]488
[01f5e17]489 if (screenbuffer_init(&connections[i].screenbuffer,
490 fb_info.cols, fb_info.rows) == NULL) {
[c738d65]491 /* FIXME: handle error */
[3993b3d]492 return -1;
493 }
[79460ae]494 }
[d32af35]495 connections[KERNEL_CONSOLE].used = 1;
[51c1b003]496
[c738d65]497 interbuffer = mmap(NULL,
[01f5e17]498 sizeof(keyfield_t) * fb_info.cols * fb_info.rows,
499 PROTO_READ | PROTO_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
[c738d65]500 if (!interbuffer) {
[215e375]501 if (ipc_share_out_start(fb_info.phone, interbuffer,
[27d293a]502 AS_AREA_READ) != EOK) {
[01f5e17]503 munmap(interbuffer,
504 sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
[390a678]505 interbuffer = NULL;
506 }
507 }
[a805c24]508
[c738d65]509 curs_goto(0, 0);
[01f5e17]510 curs_visibility(
511 connections[active_console].screenbuffer.is_cursor_visible);
[10569b1]512
[b1f51f0]513 /* Register at NS */
[271b540]514 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
[51c1b003]515 return -1;
516
[271b540]517 // FIXME: avoid connectiong to itself, keep using klog
518 // printf(NAME ": Accepting connections\n");
[eaf34f7]519 async_manager();
[51c1b003]520
521 return 0;
522}
[ce5bcb4]523
524/** @}
525 */
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