source: mainline/uspace/srv/console/console.c@ e623197

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since e623197 was 215e375, checked in by Jakub Jermar <jakub@…>, 18 years ago

The IPC_M_SHARE_* and IPC_M_DATA_* calls pass through 3 stages. Rename the send,
receive and deliver wrappers to names ending with 'start', 'receive' and
'finalize', respectively. This should make it clearer for dummies.
  • Property mode set to 100644
File size: 13.7 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>
[79460ae]49
[e1c4849]50#include "gcons.h"
51
[cf28036c]52#define MAX_KEYREQUESTS_BUFFERED 32
[51c1b003]53
54#define NAME "CONSOLE"
55
[e87e18f]56/** Index of currently used virtual console.
57 */
[390a678]58int active_console = 0;
[eaf34f7]59
[e87e18f]60/** Information about framebuffer
61 */
[3993b3d]62struct {
63 int phone; /**< Framebuffer phone */
[bb51e9a8]64 ipcarg_t rows; /**< Framebuffer rows */
65 ipcarg_t cols; /**< Framebuffer columns */
[3993b3d]66} fb_info;
67
[79460ae]68typedef struct {
[e87e18f]69 keybuffer_t keybuffer; /**< Buffer for incoming keys. */
[00bb6965]70 /** Buffer for unsatisfied request for keys. */
71 FIFO_CREATE_STATIC(keyrequests, ipc_callid_t,
72 MAX_KEYREQUESTS_BUFFERED);
[e87e18f]73 int keyrequest_counter; /**< Number of requests in buffer. */
74 int client_phone; /**< Phone to connected client. */
[00bb6965]75 int used; /**< 1 if this virtual console is
76 * connected to some client.*/
77 screenbuffer_t screenbuffer; /**< Screenbuffer for saving screen
78 * contents and related settings. */
[79460ae]79} connection_t;
80
[00bb6965]81static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual
82 * consoles */
83static keyfield_t *interbuffer = NULL; /**< Pointer to memory shared
84 * with framebufer used for
85 * faster virtual console
[c738d65]86 * switching */
[429acb9]87
[00bb6965]88static int kernel_pixmap = -1; /**< Number of fb pixmap, where kernel
89 * console is stored */
[bb51e9a8]90
91
[e87e18f]92/** Find unused virtual console.
93 *
94 */
[d32af35]95static int find_free_connection(void)
[79460ae]96{
[c738d65]97 int i;
[79460ae]98
[c738d65]99 for (i = 0; i < CONSOLE_COUNT; i++) {
[d32af35]100 if (!connections[i].used)
[79460ae]101 return i;
102 }
[d32af35]103 return -1;
[79460ae]104}
105
[429acb9]106static void clrscr(void)
107{
[0cc4313]108 async_msg_0(fb_info.phone, FB_CLEAR);
[429acb9]109}
110
111static void curs_visibility(int v)
112{
[0cc4313]113 async_msg_1(fb_info.phone, FB_CURSOR_VISIBILITY, v);
[429acb9]114}
115
116static void curs_goto(int row, int col)
117{
[085bd54]118 async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
[429acb9]119}
120
121static void set_style(style_t *style)
122{
[00bb6965]123 async_msg_2(fb_info.phone, FB_SET_STYLE, style->fg_color,
[01f5e17]124 style->bg_color);
[429acb9]125}
126
127static void set_style_col(int fgcolor, int bgcolor)
128{
[085bd54]129 async_msg_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
[429acb9]130}
131
132static void prtchr(char c, int row, int col)
133{
[085bd54]134 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
[429acb9]135}
136
[10569b1]137/** Check key and process special keys.
138 *
[96858e8]139 *
140 */
[10569b1]141static void write_char(int console, char key)
142{
143 screenbuffer_t *scr = &(connections[console].screenbuffer);
144
145 switch (key) {
[00bb6965]146 case '\n':
[c738d65]147 scr->position_y++;
148 scr->position_x = 0;
[00bb6965]149 break;
150 case '\r':
151 break;
152 case '\t':
153 scr->position_x += 8;
154 scr->position_x -= scr->position_x % 8;
155 break;
156 case '\b':
157 if (scr->position_x == 0)
[10569b1]158 break;
[00bb6965]159 scr->position_x--;
160 if (console == active_console)
161 prtchr(' ', scr->position_y, scr->position_x);
162 screenbuffer_putchar(scr, ' ');
163 break;
164 default:
165 if (console == active_console)
166 prtchr(key, scr->position_y, scr->position_x);
[10569b1]167
[00bb6965]168 screenbuffer_putchar(scr, key);
169 scr->position_x++;
[10569b1]170 }
171
172 scr->position_y += (scr->position_x >= scr->size_x);
173
174 if (scr->position_y >= scr->size_y) {
175 scr->position_y = scr->size_y - 1;
[c891ed39]176 screenbuffer_clear_line(scr, scr->top_line);
[c738d65]177 scr->top_line = (scr->top_line + 1) % scr->size_y;
[b1f51f0]178 if (console == active_console)
[0cc4313]179 async_msg_1(fb_info.phone, FB_SCROLL, 1);
[10569b1]180 }
181
182 scr->position_x = scr->position_x % scr->size_x;
[bd929cfb]183
[429acb9]184 if (console == active_console)
185 curs_goto(scr->position_y, scr->position_x);
[10569b1]186
187}
188
[429acb9]189/** Save current screen to pixmap, draw old pixmap
190 *
191 * @param oldpixmap Old pixmap
192 * @return ID of pixmap of current screen
193 */
194static int switch_screens(int oldpixmap)
195{
196 int newpmap;
197
198 /* Save screen */
[0cc4313]199 newpmap = async_req_0_0(fb_info.phone, FB_VP2PIXMAP);
[429acb9]200 if (newpmap < 0)
201 return -1;
202
203 if (oldpixmap != -1) {
204 /* Show old screen */
[085bd54]205 async_msg_2(fb_info.phone, FB_VP_DRAW_PIXMAP, 0, oldpixmap);
[429acb9]206 /* Drop old pixmap */
[0cc4313]207 async_msg_1(fb_info.phone, FB_DROP_PIXMAP, oldpixmap);
[429acb9]208 }
209
210 return newpmap;
211}
212
213/** Switch to new console */
214static void change_console(int newcons)
215{
216 connection_t *conn;
217 static int console_pixmap = -1;
[bd02038]218 int i, j, rc;
[6d5005c]219 keyfield_t *field;
220 style_t *style;
[429acb9]221
222 if (newcons == active_console)
223 return;
224
[a7d2d78]225 if (newcons == KERNEL_CONSOLE) {
226 if (active_console == KERNEL_CONSOLE)
[429acb9]227 return;
[a7d2d78]228 active_console = KERNEL_CONSOLE;
[429acb9]229 curs_visibility(0);
230
[1f83244]231 async_serialize_start();
[429acb9]232 if (kernel_pixmap == -1) {
233 /* store/restore unsupported */
234 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
235 clrscr();
236 } else {
237 gcons_in_kernel();
238 console_pixmap = switch_screens(kernel_pixmap);
239 kernel_pixmap = -1;
240 }
[1f83244]241 async_serialize_end();
[429acb9]242
243 __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
244 return;
245 }
246
[1f83244]247 async_serialize_start();
248
[429acb9]249 if (console_pixmap != -1) {
250 kernel_pixmap = switch_screens(console_pixmap);
251 console_pixmap = -1;
252 }
253 active_console = newcons;
254 gcons_change_console(newcons);
255 conn = &connections[active_console];
256
[7bc1e74]257 set_style(&conn->screenbuffer.style);
[6d5005c]258 curs_visibility(0);
[429acb9]259 if (interbuffer) {
260 for (i = 0; i < conn->screenbuffer.size_x; i++)
[01f5e17]261 for (j = 0; j < conn->screenbuffer.size_y; j++) {
262 unsigned int size_x;
263
264 size_x = conn->screenbuffer.size_x;
265 interbuffer[i + j * size_x] =
266 *get_field_at(&conn->screenbuffer, i, j);
267 }
[7bc1e74]268 /* This call can preempt, but we are already at the end */
[0cc4313]269 rc = async_req_0_0(fb_info.phone, FB_DRAW_TEXT_DATA);
[01f5e17]270 }
[6d5005c]271
[c891ed39]272 if ((!interbuffer) || (rc != 0)) {
[6d5005c]273 set_style(&conn->screenbuffer.style);
[429acb9]274 clrscr();
[6d5005c]275 style = &conn->screenbuffer.style;
276
277 for (j = 0; j < conn->screenbuffer.size_y; j++)
278 for (i = 0; i < conn->screenbuffer.size_x; i++) {
[b74959bd]279 field = get_field_at(&conn->screenbuffer, i, j);
[6d5005c]280 if (!style_same(*style, field->style))
281 set_style(&field->style);
282 style = &field->style;
[00bb6965]283 if ((field->character == ' ') &&
[01f5e17]284 (style_same(field->style,
285 conn->screenbuffer.style)))
[6d5005c]286 continue;
287
288 prtchr(field->character, j, i);
[429acb9]289 }
290 }
[6d5005c]291
[00bb6965]292 curs_goto(conn->screenbuffer.position_y,
[01f5e17]293 conn->screenbuffer.position_x);
[6d5005c]294 curs_visibility(conn->screenbuffer.is_cursor_visible);
[1f83244]295
296 async_serialize_end();
[429acb9]297}
[10569b1]298
[e87e18f]299/** Handler for keyboard */
[eaf34f7]300static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
[51c1b003]301{
[eaf34f7]302 ipc_callid_t callid;
[51c1b003]303 ipc_call_t call;
[eaf34f7]304 int retval;
[dd641e3]305 int c;
[c1d2c9d]306 connection_t *conn;
[1f83244]307 int newcon;
[bb51e9a8]308
[eaf34f7]309 /* Ignore parameters, the connection is alread opened */
310 while (1) {
311 callid = async_get_call(&call);
312 switch (IPC_GET_METHOD(call)) {
313 case IPC_M_PHONE_HUNGUP:
314 /* TODO: Handle hangup */
315 return;
[1f83244]316 case KBD_MS_LEFT:
317 newcon = gcons_mouse_btn(IPC_GET_ARG1(call));
318 if (newcon != -1)
319 change_console(newcon);
[501a8ba]320 retval = 0;
[1f83244]321 break;
[830ac99]322 case KBD_MS_MOVE:
[00bb6965]323 gcons_mouse_move(IPC_GET_ARG1(call),
[01f5e17]324 IPC_GET_ARG2(call));
[501a8ba]325 retval = 0;
[830ac99]326 break;
[eaf34f7]327 case KBD_PUSHCHAR:
328 /* got key from keyboard driver */
[b27a97bb]329
[eaf34f7]330 retval = 0;
[a805c24]331 c = IPC_GET_ARG1(call);
[eaf34f7]332 /* switch to another virtual console */
[cf28036c]333
[c1d2c9d]334 conn = &connections[active_console];
[00bb6965]335/*
336 * if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 +
337 * CONSOLE_COUNT)) {
338 */
[dd641e3]339 if ((c >= 0x101) && (c < 0x101 + CONSOLE_COUNT)) {
340 if (c == 0x112)
[a7d2d78]341 change_console(KERNEL_CONSOLE);
[429acb9]342 else
[dd641e3]343 change_console(c - 0x101);
[eaf34f7]344 break;
345 }
[cf28036c]346
347 /* if client is awaiting key, send it */
[c1d2c9d]348 if (conn->keyrequest_counter > 0) {
349 conn->keyrequest_counter--;
[b74959bd]350 ipc_answer_1(fifo_pop(conn->keyrequests), EOK,
351 c);
[cf28036c]352 break;
353 }
354
[c1d2c9d]355 keybuffer_push(&conn->keybuffer, c);
[501a8ba]356 retval = 0;
[ad123964]357
[eaf34f7]358 break;
359 default:
[1029d3d3]360 retval = ENOENT;
[085bd54]361 }
[b74959bd]362 ipc_answer_0(callid, retval);
[eaf34f7]363 }
364}
365
366/** Default thread for new connections */
[b1f51f0]367static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
[eaf34f7]368{
[51c1b003]369 ipc_callid_t callid;
[eaf34f7]370 ipc_call_t call;
371 int consnum;
[3756912]372 ipcarg_t arg1, arg2;
[e9073f2]373 connection_t *conn;
[eaf34f7]374
[d32af35]375 if ((consnum = find_free_connection()) == -1) {
[b74959bd]376 ipc_answer_0(iid, ELIMIT);
[eaf34f7]377 return;
378 }
[e9073f2]379 conn = &connections[consnum];
[085bd54]380 conn->used = 1;
[a7d2d78]381
[085bd54]382 async_serialize_start();
[a7d2d78]383 gcons_notify_connect(consnum);
[38c706cc]384 conn->client_phone = IPC_GET_ARG5(*icall);
[e9073f2]385 screenbuffer_clear(&conn->screenbuffer);
[10569b1]386
[eaf34f7]387 /* Accept the connection */
[b74959bd]388 ipc_answer_0(iid, EOK);
[085bd54]389
[eaf34f7]390 while (1) {
[085bd54]391 async_serialize_end();
[eaf34f7]392 callid = async_get_call(&call);
[085bd54]393 async_serialize_start();
394
[96858e8]395 arg1 = 0;
396 arg2 = 0;
[eaf34f7]397 switch (IPC_GET_METHOD(call)) {
398 case IPC_M_PHONE_HUNGUP:
[e9073f2]399 gcons_notify_disconnect(consnum);
[085bd54]400
[e9073f2]401 /* Answer all pending requests */
402 while (conn->keyrequest_counter > 0) {
403 conn->keyrequest_counter--;
[b74959bd]404 ipc_answer_0(fifo_pop(conn->keyrequests),
405 ENOENT);
[e9073f2]406 break;
407 }
[0d11fc1c]408 conn->used = 0;
[eaf34f7]409 return;
410 case CONSOLE_PUTCHAR:
[10569b1]411 write_char(consnum, IPC_GET_ARG1(call));
[d6cc453]412 gcons_notify_char(consnum);
[ad123964]413 break;
414 case CONSOLE_CLEAR:
[3993b3d]415 /* Send message to fb */
416 if (consnum == active_console) {
[0cc4313]417 async_msg_0(fb_info.phone, FB_CLEAR);
[3993b3d]418 }
419
[e9073f2]420 screenbuffer_clear(&conn->screenbuffer);
[3993b3d]421
[eaf34f7]422 break;
[ad123964]423 case CONSOLE_GOTO:
[00bb6965]424 screenbuffer_goto(&conn->screenbuffer,
[01f5e17]425 IPC_GET_ARG2(call), IPC_GET_ARG1(call));
[6118e5f6]426 if (consnum == active_console)
[00bb6965]427 curs_goto(IPC_GET_ARG1(call),
[01f5e17]428 IPC_GET_ARG2(call));
[ad123964]429 break;
[3756912]430 case CONSOLE_GETSIZE:
[d6cc453]431 arg1 = fb_info.rows;
432 arg2 = fb_info.cols;
[3756912]433 break;
[0c6984e]434 case CONSOLE_FLUSH:
[a3d2939]435 if (consnum == active_console)
[0cc4313]436 async_req_0_0(fb_info.phone, FB_FLUSH);
[a9bd960c]437 break;
438 case CONSOLE_SET_STYLE:
439 arg1 = IPC_GET_ARG1(call);
440 arg2 = IPC_GET_ARG2(call);
[01f5e17]441 screenbuffer_set_style(&conn->screenbuffer, arg1,
442 arg2);
[a9bd960c]443 if (consnum == active_console)
[429acb9]444 set_style_col(arg1, arg2);
[0c6984e]445 break;
[a8b2b5b2]446 case CONSOLE_CURSOR_VISIBILITY:
447 arg1 = IPC_GET_ARG1(call);
[e9073f2]448 conn->screenbuffer.is_cursor_visible = arg1;
[a8b2b5b2]449 if (consnum == active_console)
450 curs_visibility(arg1);
451 break;
[eaf34f7]452 case CONSOLE_GETCHAR:
[e9073f2]453 if (keybuffer_empty(&conn->keybuffer)) {
[cf28036c]454 /* buffer is empty -> store request */
[00bb6965]455 if (conn->keyrequest_counter <
456 MAX_KEYREQUESTS_BUFFERED) {
[e9073f2]457 fifo_push(conn->keyrequests, callid);
458 conn->keyrequest_counter++;
[cf28036c]459 } else {
[00bb6965]460 /*
461 * No key available and too many
462 * requests => fail.
463 */
[b74959bd]464 ipc_answer_0(callid, ELIMIT);
[cf28036c]465 }
466 continue;
[00bb6965]467 }
468 keybuffer_pop(&conn->keybuffer, (int *) &arg1);
[eaf34f7]469 break;
470 }
[b74959bd]471 ipc_answer_2(callid, EOK, arg1, arg2);
[eaf34f7]472 }
473}
474
475int main(int argc, char *argv[])
476{
477 ipcarg_t phonehash;
[501a8ba]478 int kbd_phone;
[79460ae]479 int i;
[da0c91e7]480
481 async_set_client_connection(client_connection);
[51c1b003]482
483 /* Connect to keyboard driver */
484
[b61d47d]485 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
[c738d65]486 while (kbd_phone < 0) {
[eaf34f7]487 usleep(10000);
[b61d47d]488 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
[00bb6965]489 }
[51c1b003]490
[38c706cc]491 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
[51c1b003]492 return -1;
[290c0db]493 async_new_connection(phonehash, 0, NULL, keyboard_events);
494
[51c1b003]495 /* Connect to framebuffer driver */
496
[b61d47d]497 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
[c738d65]498 while (fb_info.phone < 0) {
[3993b3d]499 usleep(10000);
[b61d47d]500 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
[3993b3d]501 }
[429acb9]502
503 /* Save old kernel screen */
504 kernel_pixmap = switch_screens(-1);
[e1c4849]505
506 /* Initialize gcons */
507 gcons_init(fb_info.phone);
508 /* Synchronize, the gcons can have something in queue */
[0cc4313]509 async_req_0_0(fb_info.phone, FB_FLUSH);
[e92aabf]510 /* Enable double buffering */
[c738d65]511 async_msg_2(fb_info.phone, FB_VIEWPORT_DB, (sysarg_t) -1, 1);
[3993b3d]512
[0cc4313]513 async_req_0_2(fb_info.phone, FB_GET_CSIZE, &fb_info.rows,
[01f5e17]514 &fb_info.cols);
[429acb9]515 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
516 clrscr();
[3993b3d]517
518 /* Init virtual consoles */
[79460ae]519 for (i = 0; i < CONSOLE_COUNT; i++) {
520 connections[i].used = 0;
[01f5e17]521 keybuffer_init(&connections[i].keybuffer);
[cf28036c]522
[01f5e17]523 connections[i].keyrequests.head = 0;
524 connections[i].keyrequests.tail = 0;
[cf28036c]525 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
526 connections[i].keyrequest_counter = 0;
[3993b3d]527
[01f5e17]528 if (screenbuffer_init(&connections[i].screenbuffer,
529 fb_info.cols, fb_info.rows) == NULL) {
[c738d65]530 /* FIXME: handle error */
[3993b3d]531 return -1;
532 }
[79460ae]533 }
[d32af35]534 connections[KERNEL_CONSOLE].used = 1;
[51c1b003]535
[c738d65]536 interbuffer = mmap(NULL,
[01f5e17]537 sizeof(keyfield_t) * fb_info.cols * fb_info.rows,
538 PROTO_READ | PROTO_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
[c738d65]539 if (!interbuffer) {
[215e375]540 if (ipc_share_out_start(fb_info.phone, interbuffer,
[27d293a]541 AS_AREA_READ) != EOK) {
[01f5e17]542 munmap(interbuffer,
543 sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
[390a678]544 interbuffer = NULL;
545 }
546 }
[a805c24]547
[c738d65]548 curs_goto(0, 0);
[01f5e17]549 curs_visibility(
550 connections[active_console].screenbuffer.is_cursor_visible);
[10569b1]551
[b1f51f0]552 /* Register at NS */
[38c706cc]553 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, 0, &phonehash) != 0) {
[51c1b003]554 return -1;
[00bb6965]555 }
[51c1b003]556
[eaf34f7]557 async_manager();
[51c1b003]558
559 return 0;
560}
[ce5bcb4]561
562/** @}
563 */
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