source: mainline/uspace/lib/c/generic/io/con_srv.c@ ce862ac

serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since ce862ac was 68a552f, checked in by Jiri Svoboda <jiri@…>, 4 years ago

Efficient way of rendering to the console via shared buffer

Makes congfx reasonably fast
  • Property mode set to 100644
File size: 10.8 KB
Line 
1/*
2 * Copyright (c) 2021 Jiri Svoboda
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 libc
30 * @{
31 */
32/**
33 * @file
34 * @brief Console protocol server stub
35 */
36#include <as.h>
37#include <errno.h>
38#include <io/cons_event.h>
39#include <ipc/console.h>
40#include <stdlib.h>
41#include <stddef.h>
42
43#include <io/con_srv.h>
44
45static errno_t console_ev_encode(cons_event_t *event, ipc_call_t *icall)
46{
47 ipc_set_arg1(icall, event->type);
48
49 switch (event->type) {
50 case CEV_KEY:
51 ipc_set_arg2(icall, event->ev.key.type);
52 ipc_set_arg3(icall, event->ev.key.key);
53 ipc_set_arg4(icall, event->ev.key.mods);
54 ipc_set_arg5(icall, event->ev.key.c);
55 break;
56 case CEV_POS:
57 ipc_set_arg2(icall, (event->ev.pos.pos_id << 16) | (event->ev.pos.type & 0xffff));
58 ipc_set_arg3(icall, event->ev.pos.btn_num);
59 ipc_set_arg4(icall, event->ev.pos.hpos);
60 ipc_set_arg5(icall, event->ev.pos.vpos);
61 break;
62 default:
63 return EIO;
64 }
65
66 return EOK;
67}
68
69static void con_read_srv(con_srv_t *srv, ipc_call_t *icall)
70{
71 void *buf;
72 size_t size;
73 errno_t rc;
74
75 ipc_call_t call;
76 if (!async_data_read_receive(&call, &size)) {
77 async_answer_0(icall, EINVAL);
78 return;
79 }
80
81 buf = malloc(size);
82 if (buf == NULL) {
83 async_answer_0(&call, ENOMEM);
84 async_answer_0(icall, ENOMEM);
85 return;
86 }
87
88 if (srv->srvs->ops->read == NULL) {
89 async_answer_0(&call, ENOTSUP);
90 async_answer_0(icall, ENOTSUP);
91 free(buf);
92 return;
93 }
94
95 size_t nread;
96 rc = srv->srvs->ops->read(srv, buf, size, &nread);
97 if (rc != EOK) {
98 async_answer_0(&call, rc);
99 async_answer_0(icall, rc);
100 free(buf);
101 return;
102 }
103
104 async_data_read_finalize(&call, buf, nread);
105 free(buf);
106
107 async_answer_1(icall, EOK, nread);
108}
109
110static void con_write_srv(con_srv_t *srv, ipc_call_t *icall)
111{
112 void *data;
113 size_t size;
114 errno_t rc;
115
116 rc = async_data_write_accept(&data, false, 0, 0, 0, &size);
117 if (rc != EOK) {
118 async_answer_0(icall, rc);
119 return;
120 }
121
122 if (srv->srvs->ops->write == NULL) {
123 async_answer_0(icall, ENOTSUP);
124 return;
125 }
126
127 size_t nwritten = 0;
128 rc = srv->srvs->ops->write(srv, data, size, &nwritten);
129 free(data);
130
131 async_answer_1(icall, rc, nwritten);
132}
133
134static void con_sync_srv(con_srv_t *srv, ipc_call_t *icall)
135{
136 if (srv->srvs->ops->sync == NULL) {
137 async_answer_0(icall, ENOTSUP);
138 return;
139 }
140
141 srv->srvs->ops->sync(srv);
142 async_answer_0(icall, EOK);
143}
144
145static void con_clear_srv(con_srv_t *srv, ipc_call_t *icall)
146{
147 if (srv->srvs->ops->clear == NULL) {
148 async_answer_0(icall, ENOTSUP);
149 return;
150 }
151
152 srv->srvs->ops->clear(srv);
153 async_answer_0(icall, EOK);
154}
155
156static void con_set_pos_srv(con_srv_t *srv, ipc_call_t *icall)
157{
158 sysarg_t col;
159 sysarg_t row;
160
161 col = ipc_get_arg1(icall);
162 row = ipc_get_arg2(icall);
163
164 if (srv->srvs->ops->set_pos == NULL) {
165 async_answer_0(icall, ENOTSUP);
166 return;
167 }
168
169 srv->srvs->ops->set_pos(srv, col, row);
170 async_answer_0(icall, EOK);
171}
172
173static void con_get_pos_srv(con_srv_t *srv, ipc_call_t *icall)
174{
175 errno_t rc;
176 sysarg_t col;
177 sysarg_t row;
178
179 if (srv->srvs->ops->get_pos == NULL) {
180 async_answer_0(icall, ENOTSUP);
181 return;
182 }
183
184 rc = srv->srvs->ops->get_pos(srv, &col, &row);
185 async_answer_2(icall, rc, col, row);
186}
187
188static void con_get_size_srv(con_srv_t *srv, ipc_call_t *icall)
189{
190 errno_t rc;
191 sysarg_t cols;
192 sysarg_t rows;
193
194 if (srv->srvs->ops->get_size == NULL) {
195 async_answer_0(icall, ENOTSUP);
196 return;
197 }
198
199 rc = srv->srvs->ops->get_size(srv, &cols, &rows);
200 async_answer_2(icall, rc, cols, rows);
201}
202
203static void con_get_color_cap_srv(con_srv_t *srv, ipc_call_t *icall)
204{
205 errno_t rc;
206 console_caps_t ccap;
207
208 if (srv->srvs->ops->get_color_cap == NULL) {
209 async_answer_0(icall, ENOTSUP);
210 return;
211 }
212
213 rc = srv->srvs->ops->get_color_cap(srv, &ccap);
214 async_answer_1(icall, rc, (sysarg_t)ccap);
215}
216
217static void con_set_style_srv(con_srv_t *srv, ipc_call_t *icall)
218{
219 console_style_t style;
220
221 style = ipc_get_arg1(icall);
222
223 if (srv->srvs->ops->set_style == NULL) {
224 async_answer_0(icall, ENOTSUP);
225 return;
226 }
227
228 srv->srvs->ops->set_style(srv, style);
229 async_answer_0(icall, EOK);
230}
231
232static void con_set_color_srv(con_srv_t *srv, ipc_call_t *icall)
233{
234 console_color_t bgcolor;
235 console_color_t fgcolor;
236 console_color_attr_t flags;
237
238 bgcolor = ipc_get_arg1(icall);
239 fgcolor = ipc_get_arg2(icall);
240 flags = ipc_get_arg3(icall);
241
242 if (srv->srvs->ops->set_color == NULL) {
243 async_answer_0(icall, ENOTSUP);
244 return;
245 }
246
247 srv->srvs->ops->set_color(srv, bgcolor, fgcolor, flags);
248 async_answer_0(icall, EOK);
249}
250
251static void con_set_rgb_color_srv(con_srv_t *srv, ipc_call_t *icall)
252{
253 pixel_t bgcolor;
254 pixel_t fgcolor;
255
256 bgcolor = ipc_get_arg1(icall);
257 fgcolor = ipc_get_arg2(icall);
258
259 if (srv->srvs->ops->set_rgb_color == NULL) {
260 async_answer_0(icall, ENOTSUP);
261 return;
262 }
263
264 srv->srvs->ops->set_rgb_color(srv, bgcolor, fgcolor);
265 async_answer_0(icall, EOK);
266}
267
268static void con_set_cursor_visibility_srv(con_srv_t *srv, ipc_call_t *icall)
269{
270 bool show;
271
272 show = ipc_get_arg1(icall);
273
274 if (srv->srvs->ops->set_cursor_visibility == NULL) {
275 async_answer_0(icall, ENOTSUP);
276 return;
277 }
278
279 srv->srvs->ops->set_cursor_visibility(srv, show);
280 async_answer_0(icall, EOK);
281}
282
283static void con_get_event_srv(con_srv_t *srv, ipc_call_t *icall)
284{
285 errno_t rc;
286 cons_event_t event;
287 ipc_call_t result;
288
289 if (srv->srvs->ops->get_event == NULL) {
290 async_answer_0(icall, ENOTSUP);
291 return;
292 }
293
294 rc = srv->srvs->ops->get_event(srv, &event);
295 if (rc != EOK) {
296 async_answer_0(icall, rc);
297 return;
298 }
299
300 rc = console_ev_encode(&event, &result);
301 if (rc != EOK) {
302 async_answer_0(icall, rc);
303 return;
304 }
305
306 async_answer_5(icall, rc, ipc_get_arg1(&result), ipc_get_arg2(&result),
307 ipc_get_arg3(&result), ipc_get_arg4(&result), ipc_get_arg5(&result));
308}
309
310/** Create shared buffer for efficient rendering */
311static void con_map_srv(con_srv_t *srv, ipc_call_t *icall)
312{
313 errno_t rc;
314 charfield_t *buf;
315 sysarg_t cols, rows;
316 ipc_call_t call;
317 size_t size;
318
319 if (srv->srvs->ops->map == NULL || srv->srvs->ops->unmap == NULL) {
320 async_answer_0(icall, ENOTSUP);
321 return;
322 }
323
324 cols = ipc_get_arg1(icall);
325 rows = ipc_get_arg2(icall);
326
327 if (!async_share_in_receive(&call, &size)) {
328 async_answer_0(icall, EINVAL);
329 return;
330 }
331
332 /* Check size */
333 if (size != PAGES2SIZE(SIZE2PAGES(cols * rows * sizeof(charfield_t)))) {
334 async_answer_0(&call, EINVAL);
335 async_answer_0(icall, EINVAL);
336 return;
337 }
338
339 rc = srv->srvs->ops->map(srv, cols, rows, &buf);
340 if (rc != EOK) {
341 async_answer_0(&call, rc);
342 async_answer_0(icall, rc);
343 return;
344 }
345
346 rc = async_share_in_finalize(&call, buf, AS_AREA_READ |
347 AS_AREA_WRITE | AS_AREA_CACHEABLE);
348 if (rc != EOK) {
349 srv->srvs->ops->unmap(srv);
350 async_answer_0(icall, EIO);
351 return;
352 }
353
354 async_answer_0(icall, EOK);
355}
356
357/** Delete shared buffer */
358static void con_unmap_srv(con_srv_t *srv, ipc_call_t *icall)
359{
360 if (srv->srvs->ops->unmap == NULL) {
361 async_answer_0(icall, ENOTSUP);
362 return;
363 }
364
365 srv->srvs->ops->unmap(srv);
366 async_answer_0(icall, EOK);
367}
368
369/** Update console area from shared buffer */
370static void con_update_srv(con_srv_t *srv, ipc_call_t *icall)
371{
372 sysarg_t c0, r0, c1, r1;
373
374 c0 = ipc_get_arg1(icall);
375 r0 = ipc_get_arg2(icall);
376 c1 = ipc_get_arg3(icall);
377 r1 = ipc_get_arg4(icall);
378
379 if (srv->srvs->ops->update == NULL) {
380 async_answer_0(icall, ENOTSUP);
381 return;
382 }
383
384 srv->srvs->ops->update(srv, c0, r0, c1, r1);
385 async_answer_0(icall, EOK);
386}
387
388static con_srv_t *con_srv_create(con_srvs_t *srvs)
389{
390 con_srv_t *srv;
391
392 srv = calloc(1, sizeof(*srv));
393 if (srv == NULL)
394 return NULL;
395
396 srv->srvs = srvs;
397 return srv;
398}
399
400void con_srvs_init(con_srvs_t *srvs)
401{
402 srvs->ops = NULL;
403 srvs->sarg = NULL;
404 srvs->abort_timeout = 0;
405 srvs->aborted = false;
406}
407
408errno_t con_conn(ipc_call_t *icall, con_srvs_t *srvs)
409{
410 con_srv_t *srv;
411 errno_t rc;
412
413 /* Accept the connection */
414 async_accept_0(icall);
415
416 srv = con_srv_create(srvs);
417 if (srv == NULL)
418 return ENOMEM;
419
420 srv->client_sess = NULL;
421
422 rc = srvs->ops->open(srvs, srv);
423 if (rc != EOK)
424 return rc;
425
426 while (true) {
427 ipc_call_t call;
428 bool received = false;
429
430 while (!received) {
431 /* XXX Need to be able to abort immediately */
432 received = async_get_call_timeout(&call,
433 srvs->abort_timeout);
434
435 if (srv->srvs->aborted) {
436 if (received)
437 async_answer_0(&call, EINTR);
438 break;
439 }
440 }
441
442 if (!received)
443 break;
444
445 sysarg_t method = ipc_get_imethod(&call);
446
447 if (!method) {
448 /* The other side has hung up */
449 async_answer_0(&call, EOK);
450 break;
451 }
452
453 switch (method) {
454 case VFS_OUT_READ:
455 con_read_srv(srv, &call);
456 break;
457 case VFS_OUT_WRITE:
458 con_write_srv(srv, &call);
459 break;
460 case VFS_OUT_SYNC:
461 con_sync_srv(srv, &call);
462 break;
463 case CONSOLE_CLEAR:
464 con_clear_srv(srv, &call);
465 break;
466 case CONSOLE_SET_POS:
467 con_set_pos_srv(srv, &call);
468 break;
469 case CONSOLE_GET_POS:
470 con_get_pos_srv(srv, &call);
471 break;
472 case CONSOLE_GET_SIZE:
473 con_get_size_srv(srv, &call);
474 break;
475 case CONSOLE_GET_COLOR_CAP:
476 con_get_color_cap_srv(srv, &call);
477 break;
478 case CONSOLE_SET_STYLE:
479 con_set_style_srv(srv, &call);
480 break;
481 case CONSOLE_SET_COLOR:
482 con_set_color_srv(srv, &call);
483 break;
484 case CONSOLE_SET_RGB_COLOR:
485 con_set_rgb_color_srv(srv, &call);
486 break;
487 case CONSOLE_SET_CURSOR_VISIBILITY:
488 con_set_cursor_visibility_srv(srv, &call);
489 break;
490 case CONSOLE_GET_EVENT:
491 con_get_event_srv(srv, &call);
492 break;
493 case CONSOLE_MAP:
494 con_map_srv(srv, &call);
495 break;
496 case CONSOLE_UNMAP:
497 con_unmap_srv(srv, &call);
498 break;
499 case CONSOLE_UPDATE:
500 con_update_srv(srv, &call);
501 break;
502 default:
503 async_answer_0(&call, ENOTSUP);
504 }
505 }
506
507 rc = srvs->ops->close(srv);
508 free(srv);
509
510 return rc;
511}
512
513/** @}
514 */
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