src/tdm_server.c

   1 /**************************************************************************
   2  *
   3  * libtdm
   4  *
   5  * Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
   6  *
   7  * Contact: Eunchul Kim <chulspro.kim@samsung.com>,
   8  *          JinYoung Jeon <jy0.jeon@samsung.com>,
   9  *          Taeheon Kim <th908.kim@samsung.com>,
  10  *          YoungJun Cho <yj44.cho@samsung.com>,
  11  *          SooChan Lim <sc1.lim@samsung.com>,
  12  *          Boram Park <sc1.lim@samsung.com>
  13  *
  14  * Permission is hereby granted, free of charge, to any person obtaining a
  15  * copy of this software and associated documentation files (the
  16  * "Software"), to deal in the Software without restriction, including
  17  * without limitation the rights to use, copy, modify, merge, publish,
  18  * distribute, sub license, and/or sell copies of the Software, and to
  19  * permit persons to whom the Software is furnished to do so, subject to
  20  * the following conditions:
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  27  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  29  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  30  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  31  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  32  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33  *
  34 **************************************************************************/
  35
  36 #ifdef HAVE_CONFIG_H
  37 #include "config.h"
  38 #endif
  39
  40 #include "tdm.h"
  41 #include "tdm_private.h"
  42 #include "tdm_list.h"
  43 #include "tdm-server-protocol.h"
  44
  45 /* CAUTION:
  46  * - tdm server doesn't care about thread things.
  47  * - DO NOT use the TDM internal functions here.
  48  *     However, the internal function which does lock/unlock the mutex of
  49  *     private_display in itself can be called.
  50  * - DO NOT use the tdm_private_display structure here.
  51  * - The callback function things can be called in main thread.
  52  */
  53
  54 struct _tdm_private_server {
  55         tdm_private_loop *private_loop;
  56         struct list_head output_list;
  57         struct list_head wait_list;
  58 };
  59
  60 typedef struct _tdm_server_output_info {
  61         struct list_head link;
  62         tdm_private_server *private_server;
  63         struct wl_resource *resource;
  64         tdm_output *output;
  65         struct list_head vblank_list;
  66 } tdm_server_output_info;
  67
  68 typedef struct _tdm_server_vblank_info {
  69         struct list_head link;
  70         tdm_server_output_info *output_info;
  71         struct wl_resource *resource;
  72
  73         tdm_vblank *vblank;
  74 } tdm_server_vblank_info;
  75
  76 typedef struct _tdm_server_wait_info {
  77         struct list_head link;
  78         tdm_server_vblank_info *vblank_info;
  79
  80         unsigned int req_id;
  81 } tdm_server_wait_info;
  82
  83 static tdm_private_server *keep_private_server;
  84
  85 static void destroy_wait(tdm_server_wait_info *wait_info);
  86
  87 static tdm_output*
  88 _tdm_server_find_output(tdm_private_server *private_server, const char *name)
  89 {
  90         tdm_private_loop *private_loop = private_server->private_loop;
  91         tdm_output *found = NULL;
  92
  93         if (!strncasecmp(name, "primary", 7) || !strncasecmp(name, "default", 7))
  94                 found = tdm_display_get_output(private_loop->dpy, 0, NULL);
  95
  96         if (!found) {
  97                 int count = 0, i;
  98
  99                 tdm_display_get_output_count(private_loop->dpy, &count);
 100
 101                 for (i = 0; i < count; i++) {
 102                         tdm_output *output = tdm_display_get_output(private_loop->dpy, i, NULL);
 103                         tdm_output_conn_status status;
 104                         const char *model = NULL;
 105                         tdm_error ret;
 106
 107                         ret = tdm_output_get_conn_status(output, &status);
 108                         if (ret || status == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 109                                 continue;
 110
 111                         ret = tdm_output_get_model_info(output, NULL, &model, NULL);
 112                         if (ret || !model)
 113                                 continue;
 114
 115                         if (strncmp(model, name, TDM_NAME_LEN))
 116                                 continue;
 117
 118                         found = output;
 119                         break;
 120                 }
 121         }
 122
 123         return found;
 124 }
 125
 126 static void
 127 _tdm_server_send_done(tdm_server_wait_info *wait_info, tdm_error error,
 128                                           unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec)
 129 {
 130         tdm_server_wait_info *found;
 131         tdm_server_vblank_info *vblank_info;
 132
 133         if (!keep_private_server)
 134                 return;
 135
 136         LIST_FIND_ITEM(wait_info, &keep_private_server->wait_list,
 137                                    tdm_server_wait_info, link, found);
 138         if (!found) {
 139                 TDM_DBG("wait_info(%p) is destroyed", wait_info);
 140                 return;
 141         }
 142
 143         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 144                 TDM_INFO("req_id(%d) done", wait_info->req_id);
 145
 146         TDM_TRACE_COUNT(ServerDoneVBlank, wait_info->req_id);
 147
 148         vblank_info = wait_info->vblank_info;
 149         wl_tdm_vblank_send_done(vblank_info->resource, wait_info->req_id,
 150                                                         sequence, tv_sec, tv_usec, error);
 151         destroy_wait(wait_info);
 152 }
 153
 154 static void
 155 _tdm_server_cb_vblank(tdm_vblank *vblank, tdm_error error, unsigned int sequence,
 156                                           unsigned int tv_sec, unsigned int tv_usec, void *user_data)
 157 {
 158         _tdm_server_send_done((tdm_server_wait_info*)user_data, error, sequence, tv_sec, tv_usec);
 159 }
 160
 161 static void
 162 _tdm_server_cb_output_change(tdm_output *output, tdm_output_change_type type,
 163                                                          tdm_value value, void *user_data)
 164 {
 165         tdm_server_output_info *output_info = user_data;
 166
 167         TDM_RETURN_IF_FAIL(output_info != NULL);
 168
 169         switch (type) {
 170         case TDM_OUTPUT_CHANGE_DPMS:
 171                 wl_tdm_output_send_dpms(output_info->resource, value.u32);
 172                 break;
 173         case TDM_OUTPUT_CHANGE_CONNECTION:
 174                 wl_tdm_output_send_connection(output_info->resource, value.u32);
 175                 break;
 176         default:
 177                 break;
 178         }
 179 }
 180
 181 static void
 182 destroy_wait(tdm_server_wait_info *wait_info)
 183 {
 184         LIST_DEL(&wait_info->link);
 185         free(wait_info);
 186 }
 187
 188 static void
 189 destroy_vblank_callback(struct wl_resource *resource)
 190 {
 191         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 192         tdm_server_wait_info *w = NULL, *ww = NULL;
 193
 194         TDM_RETURN_IF_FAIL(vblank_info != NULL);
 195
 196         if (vblank_info->vblank)
 197                 tdm_vblank_destroy(vblank_info->vblank);
 198
 199         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &keep_private_server->wait_list, link) {
 200                 if (w->vblank_info == vblank_info)
 201                         destroy_wait(w);
 202         }
 203
 204         LIST_DEL(&vblank_info->link);
 205         free(vblank_info);
 206 }
 207
 208 static void
 209 _tdm_server_vblank_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 210 {
 211         wl_resource_destroy(resource);
 212 }
 213
 214 static void
 215 _tdm_server_vblank_cb_set_fps(struct wl_client *client, struct wl_resource *resource, uint32_t fps)
 216 {
 217         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 218
 219         tdm_vblank_set_fps(vblank_info->vblank, fps);
 220 }
 221
 222 static void
 223 _tdm_server_vblank_cb_set_offset(struct wl_client *client, struct wl_resource *resource, int32_t offset)
 224 {
 225         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 226
 227         tdm_vblank_set_offset(vblank_info->vblank, offset);
 228 }
 229
 230 static void
 231 _tdm_server_vblank_cb_set_enable_fake(struct wl_client *client, struct wl_resource *resource, uint32_t enable_fake)
 232 {
 233         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 234
 235         tdm_vblank_set_enable_fake(vblank_info->vblank, enable_fake);
 236 }
 237
 238 static void
 239 _tdm_server_vblank_cb_wait_vblank(struct wl_client *client, struct wl_resource *resource,
 240                                                                   uint32_t interval, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 241 {
 242         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 243         tdm_server_output_info *output_info = vblank_info->output_info;
 244         tdm_private_server *private_server = output_info->private_server;
 245         tdm_server_wait_info *wait_info;
 246         tdm_error ret;
 247
 248         TDM_TRACE_COUNT(ServerWaitVBlank, req_id);
 249
 250         wait_info = calloc(1, sizeof * wait_info);
 251         if (!wait_info) {
 252                 TDM_ERR("alloc failed");
 253                 ret = TDM_ERROR_OUT_OF_MEMORY;
 254                 goto wait_failed;
 255         }
 256
 257         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 258         wait_info->vblank_info = vblank_info;
 259         wait_info->req_id = req_id;
 260
 261         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 262                 TDM_INFO("req_id(%d) wait", req_id);
 263
 264         ret = tdm_vblank_wait(vblank_info->vblank, req_sec, req_usec, interval, _tdm_server_cb_vblank, wait_info);
 265
 266         if (!tdm_vblank_get_enable_fake(vblank_info->vblank) && ret == TDM_ERROR_DPMS_OFF)
 267                 goto wait_failed;
 268
 269         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 270
 271         return;
 272 wait_failed:
 273         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 274         if (wait_info)
 275                 destroy_wait(wait_info);
 276 }
 277
 278 static void
 279 _tdm_server_vblank_cb_wait_vblank_seq(struct wl_client *client, struct wl_resource *resource,
 280                                                                           uint32_t sequence, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 281 {
 282         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 283         tdm_server_output_info *output_info = vblank_info->output_info;
 284         tdm_private_server *private_server = output_info->private_server;
 285         tdm_server_wait_info *wait_info;
 286         tdm_error ret;
 287
 288         TDM_TRACE_COUNT(ServerWaitVBlank, req_id);
 289
 290         wait_info = calloc(1, sizeof * wait_info);
 291         if (!wait_info) {
 292                 TDM_ERR("alloc failed");
 293                 ret = TDM_ERROR_OUT_OF_MEMORY;
 294                 goto wait_failed;
 295         }
 296
 297         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 298         wait_info->vblank_info = vblank_info;
 299         wait_info->req_id = req_id;
 300
 301         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 302                 TDM_INFO("req_id(%d) wait", req_id);
 303
 304         ret = tdm_vblank_wait_seq(vblank_info->vblank, req_sec, req_usec, sequence, _tdm_server_cb_vblank, wait_info);
 305
 306         if (!tdm_vblank_get_enable_fake(vblank_info->vblank) && ret == TDM_ERROR_DPMS_OFF)
 307                 goto wait_failed;
 308
 309         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 310
 311         return;
 312 wait_failed:
 313         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 314         if (wait_info)
 315                 destroy_wait(wait_info);
 316 }
 317
 318 static const struct wl_tdm_vblank_interface tdm_vblank_implementation = {
 319         _tdm_server_vblank_cb_destroy,
 320         _tdm_server_vblank_cb_set_fps,
 321         _tdm_server_vblank_cb_set_offset,
 322         _tdm_server_vblank_cb_set_enable_fake,
 323         _tdm_server_vblank_cb_wait_vblank,
 324         _tdm_server_vblank_cb_wait_vblank_seq,
 325 };
 326
 327 static void
 328 _tdm_server_output_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 329 {
 330         wl_resource_destroy(resource);
 331 }
 332
 333 static void
 334 _tdm_server_output_cb_create_vblank(struct wl_client *client, struct wl_resource *resource, uint32_t id)
 335 {
 336         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 337         tdm_private_server *private_server = output_info->private_server;
 338         tdm_private_loop *private_loop = private_server->private_loop;
 339         struct wl_resource *vblank_resource;
 340         tdm_vblank *vblank;
 341         tdm_server_vblank_info *vblank_info;
 342
 343         vblank_resource =
 344                 wl_resource_create(client, &wl_tdm_vblank_interface,
 345                                                    wl_resource_get_version(resource), id);
 346         if (!vblank_resource) {
 347                 wl_resource_post_no_memory(resource);
 348                 TDM_ERR("wl_resource_create failed");
 349                 return;
 350         }
 351
 352         vblank = tdm_vblank_create(private_loop->dpy, output_info->output, NULL);
 353         if (!vblank) {
 354                 wl_resource_post_no_memory(resource);
 355                 wl_resource_destroy(vblank_resource);
 356                 TDM_ERR("tdm_vblank_create failed");
 357                 return;
 358         }
 359
 360         vblank_info = calloc(1, sizeof * vblank_info);
 361         if (!vblank_info) {
 362                 wl_resource_post_no_memory(resource);
 363                 wl_resource_destroy(vblank_resource);
 364                 tdm_vblank_destroy(vblank);
 365                 TDM_ERR("alloc failed");
 366                 return;
 367         }
 368
 369         LIST_ADDTAIL(&vblank_info->link, &output_info->vblank_list);
 370         vblank_info->output_info = output_info;
 371         vblank_info->resource = vblank_resource;
 372         vblank_info->vblank = vblank;
 373
 374         wl_resource_set_implementation(vblank_resource, &tdm_vblank_implementation,
 375                                                                    vblank_info, destroy_vblank_callback);
 376
 377         return;
 378 }
 379
 380 static const struct wl_tdm_output_interface tdm_output_implementation = {
 381         _tdm_server_output_cb_destroy,
 382         _tdm_server_output_cb_create_vblank,
 383 };
 384
 385 static void
 386 destroy_output_callback(struct wl_resource *resource)
 387 {
 388         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 389         tdm_server_vblank_info *v = NULL, *vv = NULL;
 390
 391         TDM_RETURN_IF_FAIL(output_info != NULL);
 392
 393         tdm_output_remove_change_handler(output_info->output,
 394                                                                          _tdm_server_cb_output_change, output_info);
 395
 396         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &output_info->vblank_list, link) {
 397                 wl_resource_destroy(v->resource);
 398         }
 399
 400         LIST_DEL(&output_info->link);
 401         free(output_info);
 402 }
 403
 404 static void
 405 _tdm_server_cb_create_output(struct wl_client *client, struct wl_resource *resource,
 406                                                          const char *name, uint32_t id)
 407 {
 408         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 409         tdm_server_output_info *output_info;
 410         struct wl_resource *output_resource = NULL;
 411         tdm_output *output;
 412         const tdm_output_mode *mode = NULL;
 413         tdm_output_dpms dpms_value;
 414         tdm_output_conn_status status;
 415
 416         output = _tdm_server_find_output(private_server, name);
 417         if (!output) {
 418                 TDM_ERR("There is no '%s' output", name);
 419                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 420                                                            "There is no '%s' output", name);
 421                 return;
 422         }
 423
 424         tdm_output_get_mode(output, &mode);
 425         if (!mode) {
 426                 TDM_ERR("no mode for '%s' output", name);
 427                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 428                                                            "no mode for '%s' output", name);
 429                 return;
 430         }
 431
 432         tdm_output_get_dpms(output, &dpms_value);
 433         tdm_output_get_conn_status(output, &status);
 434
 435         output_resource =
 436                 wl_resource_create(client, &wl_tdm_output_interface,
 437                                                    wl_resource_get_version(resource), id);
 438         if (!output_resource) {
 439                 wl_resource_post_no_memory(resource);
 440                 TDM_ERR("wl_resource_create failed");
 441                 return;
 442         }
 443
 444         output_info = calloc(1, sizeof * output_info);
 445         if (!output_info) {
 446                 wl_resource_post_no_memory(resource);
 447                 wl_resource_destroy(output_resource);
 448                 TDM_ERR("alloc failed");
 449                 return;
 450         }
 451
 452         LIST_ADDTAIL(&output_info->link, &private_server->output_list);
 453         output_info->private_server = private_server;
 454         output_info->resource = output_resource;
 455         output_info->output = output;
 456         LIST_INITHEAD(&output_info->vblank_list);
 457
 458         tdm_output_add_change_handler(output, _tdm_server_cb_output_change, output_info);
 459
 460         wl_resource_set_implementation(output_resource, &tdm_output_implementation,
 461                                                                    output_info, destroy_output_callback);
 462
 463         wl_tdm_output_send_mode(output_resource, mode->hdisplay, mode->vdisplay, mode->vrefresh);
 464         wl_tdm_output_send_dpms(output_resource, dpms_value);
 465         wl_tdm_output_send_connection(output_resource, status);
 466 }
 467
 468 static void
 469 _tdm_server_cb_debug(struct wl_client *client, struct wl_resource *resource, const char *options)
 470 {
 471         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 472         tdm_private_loop *private_loop = private_server->private_loop;
 473         char message[TDM_SERVER_REPLY_MSG_LEN];
 474         int size = sizeof(message);
 475         uid_t uid;
 476
 477         wl_client_get_credentials(client, NULL, &uid, NULL);
 478
 479         if (uid != 0) {
 480                 snprintf(message, size, "tdm-monitor: SHOULD be a superuser.\n");
 481                 TDM_ERR("%s", message);
 482         } else {
 483                 tdm_monitor_server_command(private_loop->dpy, options, message, &size);
 484         }
 485
 486         wl_tdm_send_debug_done(resource, message);
 487 }
 488
 489 static const struct wl_tdm_interface tdm_implementation = {
 490         _tdm_server_cb_create_output,
 491         _tdm_server_cb_debug,
 492 };
 493
 494 static void
 495 _tdm_server_bind(struct wl_client *client, void *data,
 496                                  uint32_t version, uint32_t id)
 497 {
 498         struct wl_resource *resource;
 499
 500         resource = wl_resource_create(client, &wl_tdm_interface, version, id);
 501         if (!resource) {
 502                 wl_client_post_no_memory(client);
 503                 return;
 504         }
 505
 506         wl_resource_set_implementation(resource, &tdm_implementation, data, NULL);
 507 }
 508
 509 INTERN tdm_error
 510 tdm_server_init(tdm_private_loop *private_loop)
 511 {
 512         tdm_private_server *private_server;
 513
 514         TDM_RETURN_VAL_IF_FAIL(private_loop, TDM_ERROR_OPERATION_FAILED);
 515         TDM_RETURN_VAL_IF_FAIL(private_loop->wl_display, TDM_ERROR_OPERATION_FAILED);
 516
 517         if (private_loop->private_server)
 518                 return TDM_ERROR_NONE;
 519
 520         if (wl_display_add_socket(private_loop->wl_display, "tdm-socket")) {
 521                 TDM_ERR("createing a tdm-socket failed");
 522                 return TDM_ERROR_OPERATION_FAILED;
 523         }
 524
 525         private_server = calloc(1, sizeof * private_server);
 526         if (!private_server) {
 527                 TDM_ERR("alloc failed");
 528                 return TDM_ERROR_OUT_OF_MEMORY;
 529         }
 530
 531         LIST_INITHEAD(&private_server->output_list);
 532         LIST_INITHEAD(&private_server->wait_list);
 533
 534         if (!wl_global_create(private_loop->wl_display, &wl_tdm_interface, 1,
 535                                                   private_server, _tdm_server_bind)) {
 536                 TDM_ERR("creating a global resource failed");
 537                 free(private_server);
 538                 return TDM_ERROR_OUT_OF_MEMORY;
 539         }
 540
 541         private_server->private_loop = private_loop;
 542         private_loop->private_server = private_server;
 543         keep_private_server = private_server;
 544
 545         return TDM_ERROR_NONE;
 546 }
 547
 548 INTERN void
 549 tdm_server_deinit(tdm_private_loop *private_loop)
 550 {
 551         tdm_server_output_info *o = NULL, *oo = NULL;
 552         tdm_server_wait_info *w = NULL, *ww = NULL;
 553         tdm_private_server *private_server;
 554
 555         if (!private_loop->private_server)
 556                 return;
 557
 558         private_server = private_loop->private_server;
 559
 560         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_server->wait_list, link) {
 561                 destroy_wait(w);
 562         }
 563
 564         LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_server->output_list, link) {
 565                 wl_resource_destroy(o->resource);
 566         }
 567
 568         free(private_server);
 569         private_loop->private_server = NULL;
 570         keep_private_server = NULL;
 571 }