1 /**************************************************************************
5 * Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
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>
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:
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
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.
34 **************************************************************************/
41 #include "tdm_private.h"
45 * Basically tdm vblank doesn't care about thread things.
46 * However, to use tdm_event_loop_xxx functions, have to use the internal function.
47 * So need to lock/unlock the mutex of private_display. And valid_vblank_list and
48 * valid_wait_list should be protected by valid_list_lock because tdm_vblank can
49 * be used in multi-thread.
53 * - aligned by HW vblank
54 * - use a tdm_event_loop_source object only.
57 /* We expact "(unsigned int)(0.0016667 / 0.0016667) = 1". But it becomes 0. */
58 #define TDM_TIME_MARGIN 0.0000001
60 #define TDM_VBLANK_UINT_MAX 4294967295U
61 #define TDM_VBLANK_UINT_1Q 1073741823U /* UINT_MAX / 4 */
62 #define TDM_VBLANK_UINT_3Q 3221225471U /* UINT_MAX / 4 * 3 */
64 /* (seq < TDM_VBLANK_UINT_1Q && TDM_VBLANK_UINT_3Q < last_seq) means
65 * that the sequence value has reached the max value and started from 0 again.
67 #define TDM_VBLANK_SEQ_REACHED_MAX(seq, last_seq) \
68 ((seq) < TDM_VBLANK_UINT_1Q && TDM_VBLANK_UINT_3Q < (last_seq))
70 #define VER(fmt, arg...) TDM_ERR("[%p] "fmt, private_vblank, ##arg)
71 #define VWR(fmt, arg...) TDM_WRN("[%p] "fmt, private_vblank, ##arg)
72 #define VIN(fmt, arg...) TDM_INFO("[%p] "fmt, private_vblank, ##arg)
73 #define VDB(fmt, arg...) TDM_DBG("[%p] "fmt, private_vblank, ##arg)
80 } tdm_vblank_wait_type;
82 typedef struct _tdm_vblank_wait_info tdm_vblank_wait_info;
84 typedef struct _tdm_private_vblank {
85 struct list_head valid_link;
93 unsigned int vrefresh;
95 unsigned int check_HW_or_SW;
96 char name[TDM_NAME_LEN];
99 unsigned int enable_fake;
100 unsigned int ignore_global_fps;
103 unsigned int quotient;
105 unsigned int last_seq;
108 unsigned int add_front;
109 struct wl_resource *resource;
112 double HW_vblank_gap;
113 struct list_head HW_wait_list;
116 tdm_event_loop_source *SW_timer;
117 struct list_head SW_wait_list;
118 } tdm_private_vblank;
120 struct _tdm_vblank_wait_info {
121 struct list_head link;
122 struct list_head valid_link;
127 unsigned int interval;
129 tdm_vblank_handler func;
131 tdm_private_vblank *private_vblank;
133 tdm_vblank_wait_type type;
136 unsigned int target_seq;
139 /* valid_vblank_list and valid_wait_list should be protected by valid_list_lock because
140 * tdm_vblank can be used in multi-thread.
142 static pthread_mutex_t valid_list_lock;
143 static struct list_head valid_vblank_list;
144 static struct list_head valid_wait_list;
145 static unsigned int vblank_list_inited;
146 static unsigned int vblank_global_fps;
147 static double stamp = 0;
149 static tdm_error _tdm_vblank_cb_vblank_SW(void *user_data);
150 static tdm_error _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info);
151 static void _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
152 unsigned int tv_sec, unsigned int tv_usec,
157 _print_list(struct list_head *list)
159 tdm_vblank_wait_info *w = NULL;
161 LIST_FOR_EACH_ENTRY(w, list, link) {
162 printf(" %d", w->interval);
169 _tdm_vblank_valid_list_add(struct list_head *valid_link, struct list_head *valid_list)
171 pthread_mutex_lock(&valid_list_lock);
172 LIST_ADDTAIL(valid_link, valid_list);
173 pthread_mutex_unlock(&valid_list_lock);
177 _tdm_vblank_valid_list_del(struct list_head *valid_link)
179 pthread_mutex_lock(&valid_list_lock);
180 LIST_DEL(valid_link);
181 pthread_mutex_unlock(&valid_list_lock);
184 static inline tdm_private_vblank*
185 _tdm_vblank_find(double vblank_stamp)
187 tdm_private_vblank *v = NULL;
192 pthread_mutex_lock(&valid_list_lock);
193 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
194 if (v->stamp == vblank_stamp) {
195 pthread_mutex_unlock(&valid_list_lock);
199 pthread_mutex_unlock(&valid_list_lock);
204 static inline unsigned int
205 _tdm_vblank_check_valid_wait(tdm_vblank_wait_info *wait_info)
207 tdm_vblank_wait_info *w = NULL;
212 pthread_mutex_lock(&valid_list_lock);
213 LIST_FOR_EACH_ENTRY(w, &valid_wait_list, valid_link) {
214 if (w == wait_info) {
215 pthread_mutex_unlock(&valid_list_lock);
219 pthread_mutex_unlock(&valid_list_lock);
224 static inline unsigned int
225 _tdm_vblank_find_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
227 tdm_vblank_wait_info *w = NULL;
232 LIST_FOR_EACH_ENTRY(w, list, link) {
233 if (w->stamp == wait_info->stamp)
241 _tdm_vblank_insert_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
243 tdm_vblank_wait_info *w = NULL;
244 tdm_vblank_wait_info *found = NULL;
246 if (LIST_IS_EMPTY(list)) {
247 LIST_ADDTAIL(&wait_info->link, list);
251 LIST_FOR_EACH_ENTRY(w, list, link) {
252 if (wait_info->type == VBLANK_TYPE_SW) {
253 if (wait_info->target_time == 0)
254 TDM_NEVER_GET_HERE();
255 if (w->target_time <= wait_info->target_time) {
260 if (w->interval <= wait_info->interval) {
268 LIST_ADD(&wait_info->link, &found->link);
270 LIST_ADDTAIL(&wait_info->link, list->next);
274 _tdm_vblank_change_to_SW(tdm_private_vblank *private_vblank)
276 tdm_vblank_wait_info *w = NULL, *ww = NULL;
278 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
281 tdm_display_lock(private_vblank->dpy);
282 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
283 tdm_display_unlock(private_vblank->dpy);
285 w->type = VBLANK_TYPE_SW_FAKE;
286 _tdm_vblank_wait_SW(w);
291 _tdm_vblank_free_HW_wait(tdm_private_vblank *private_vblank, tdm_error error, unsigned int call_cb)
293 tdm_vblank_wait_info *w = NULL, *ww = NULL;
295 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
297 _tdm_vblank_valid_list_del(&w->valid_link);
299 tdm_display_lock(private_vblank->dpy);
300 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
301 tdm_display_unlock(private_vblank->dpy);
303 if (call_cb && w->func)
304 w->func(private_vblank, error, 0, 0, 0, w->user_data);
311 _tdm_vblank_cb_output_change(tdm_output *output, tdm_output_change_type type,
312 tdm_value value, void *user_data)
314 tdm_private_vblank *private_vblank = user_data;
316 TDM_RETURN_IF_FAIL(private_vblank != NULL);
319 case TDM_OUTPUT_CHANGE_DPMS:
320 if (private_vblank->dpms == value.u32)
322 VDB("dpms %s", tdm_dpms_str(value.u32));
323 private_vblank->dpms = value.u32;
324 private_vblank->check_HW_or_SW = 1;
325 if (private_vblank->dpms != TDM_OUTPUT_DPMS_ON) {
326 if (private_vblank->enable_fake)
327 _tdm_vblank_change_to_SW(private_vblank);
329 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_DPMS_OFF, 1);
332 case TDM_OUTPUT_CHANGE_CONNECTION:
333 VDB("output %s", tdm_status_str(value.u32));
334 if (value.u32 == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
335 _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
343 tdm_vblank_set_client_vblank_fps(unsigned int pid, const char *name, unsigned int fps)
345 tdm_private_vblank *v = NULL;
347 TDM_RETURN_VAL_IF_FAIL(pid > 0, TDM_ERROR_INVALID_PARAMETER);
348 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
350 TDM_INFO("pid: %u, name: %s, fps: %d", pid, name, fps);
352 pthread_mutex_lock(&valid_list_lock);
353 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
354 struct wl_client *client;
355 pid_t client_pid = 0;
360 client = wl_resource_get_client(v->resource);
364 wl_client_get_credentials(client, &client_pid, NULL, NULL);
366 if (client_pid != pid)
369 if (name && strncmp(name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN)) {
370 if (strncmp(v->name, name, TDM_NAME_LEN))
374 tdm_vblank_set_fps(v, fps);
376 TDM_INFO("(pid:%u) '%s' fps changed: %d", pid, v->name, fps);
378 pthread_mutex_unlock(&valid_list_lock);
380 return TDM_ERROR_NONE;
384 tdm_vblank_enable_global_fps(unsigned int enable, unsigned int fps)
386 tdm_private_vblank *v = NULL;
389 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
391 TDM_INFO("global fps: %s fps(%d)", (enable) ? "enabled" : "disabled", fps);
393 pthread_mutex_lock(&valid_list_lock);
395 vblank_global_fps = (enable) ? fps : 0;
397 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
398 /* skip if vblank is created in server side */
402 v->check_HW_or_SW = 1;
404 pthread_mutex_unlock(&valid_list_lock);
406 return TDM_ERROR_NONE;
410 tdm_vblank_create(tdm_display *dpy, tdm_output *output, tdm_error *error)
412 tdm_private_vblank *private_vblank;
413 const tdm_output_mode *mode = NULL;
414 tdm_output_dpms dpms = TDM_OUTPUT_DPMS_ON;
417 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(dpy != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
418 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(output != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
421 *error = TDM_ERROR_NONE;
423 if (!vblank_list_inited) {
424 if (pthread_mutex_init(&valid_list_lock, NULL)) {
425 TDM_ERR("mutex init failed: %m");
427 *error = TDM_ERROR_OPERATION_FAILED;
430 LIST_INITHEAD(&valid_vblank_list);
431 LIST_INITHEAD(&valid_wait_list);
432 vblank_list_inited = 1;
435 tdm_output_get_mode(output, &mode);
438 *error = TDM_ERROR_OPERATION_FAILED;
443 tdm_output_get_dpms(output, &dpms);
445 private_vblank = calloc(1, sizeof * private_vblank);
446 if (!private_vblank) {
448 *error = TDM_ERROR_OUT_OF_MEMORY;
453 tdm_output_add_change_handler(output, _tdm_vblank_cb_output_change, private_vblank);
455 private_vblank->stamp = ++stamp;
456 private_vblank->owner_tid = syscall(SYS_gettid);
457 private_vblank->dpy = dpy;
458 private_vblank->output = output;
459 private_vblank->dpms = dpms;
460 private_vblank->vrefresh = mode->vrefresh;
461 private_vblank->HW_vblank_gap = 1.0 / private_vblank->vrefresh;
463 private_vblank->check_HW_or_SW = 1;
464 private_vblank->fps = mode->vrefresh;
466 strncpy(private_vblank->name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN - 1);
467 private_vblank->name[TDM_NAME_LEN - 1] = '\0';
469 LIST_INITHEAD(&private_vblank->HW_wait_list);
470 LIST_INITHEAD(&private_vblank->SW_wait_list);
472 _tdm_vblank_valid_list_add(&private_vblank->valid_link, &valid_vblank_list);
474 if (tdm_debug_module & TDM_DEBUG_VBLANK)
475 VIN("created. vrefresh(%d) dpms(%d)",
476 private_vblank->vrefresh, private_vblank->dpms);
478 return (tdm_vblank *)private_vblank;
482 tdm_vblank_destroy(tdm_vblank *vblank)
484 tdm_private_vblank *private_vblank = vblank;
485 tdm_vblank_wait_info *w = NULL, *ww = NULL;
490 _tdm_vblank_valid_list_del(&private_vblank->valid_link);
492 if (private_vblank->SW_timer) {
493 tdm_display_lock(private_vblank->dpy);
494 tdm_event_loop_source_remove(private_vblank->SW_timer);
495 tdm_display_unlock(private_vblank->dpy);
498 tdm_output_remove_change_handler(private_vblank->output,
499 _tdm_vblank_cb_output_change, private_vblank);
501 _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
503 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
505 _tdm_vblank_valid_list_del(&w->valid_link);
509 if (tdm_debug_module & TDM_DEBUG_VBLANK)
512 free(private_vblank);
516 tdm_vblank_set_name(tdm_vblank *vblank, const char *name)
518 tdm_private_vblank *private_vblank = vblank;
520 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
523 name = TDM_VBLANK_DEFAULT_NAME;
525 strncpy(private_vblank->name, name, TDM_NAME_LEN - 1);
526 private_vblank->name[TDM_NAME_LEN - 1] = '\0';
528 if (tdm_debug_module & TDM_DEBUG_VBLANK)
529 VIN("name(%s)", name);
531 return TDM_ERROR_NONE;
535 tdm_vblank_get_name(tdm_vblank *vblank, const char **name)
537 tdm_private_vblank *private_vblank = vblank;
539 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
540 TDM_RETURN_VAL_IF_FAIL(name != NULL, TDM_ERROR_INVALID_PARAMETER);
542 *name = (const char*)private_vblank->name;
544 return TDM_ERROR_NONE;
548 tdm_vblank_set_fps(tdm_vblank *vblank, unsigned int fps)
550 tdm_private_vblank *private_vblank = vblank;
552 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
553 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
555 if (private_vblank->fps == fps)
556 return TDM_ERROR_NONE;
558 private_vblank->fps = fps;
559 private_vblank->check_HW_or_SW = 1;
561 if (tdm_debug_module & TDM_DEBUG_VBLANK)
562 VIN("fps(%d)", private_vblank->fps);
564 return TDM_ERROR_NONE;
568 tdm_vblank_get_fps(tdm_vblank *vblank, unsigned int *fps)
570 tdm_private_vblank *private_vblank = vblank;
572 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
573 TDM_RETURN_VAL_IF_FAIL(fps != NULL, TDM_ERROR_INVALID_PARAMETER);
575 *fps = private_vblank->fps;
577 return TDM_ERROR_NONE;
581 tdm_vblank_ignore_global_fps(tdm_vblank *vblank, unsigned int ignore)
583 tdm_private_vblank *private_vblank = vblank;
585 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
587 if (private_vblank->ignore_global_fps == ignore)
588 return TDM_ERROR_NONE;
590 private_vblank->ignore_global_fps = ignore;
591 private_vblank->check_HW_or_SW = 1;
593 if (tdm_debug_module & TDM_DEBUG_VBLANK)
594 VIN("ignore_global_fps(%d)", private_vblank->ignore_global_fps);
596 return TDM_ERROR_NONE;
600 tdm_vblank_set_offset(tdm_vblank *vblank, int offset)
602 tdm_private_vblank *private_vblank = vblank;
604 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
606 if (private_vblank->offset == offset)
607 return TDM_ERROR_NONE;
609 private_vblank->offset = offset;
610 private_vblank->check_HW_or_SW = 1;
612 if (tdm_debug_module & TDM_DEBUG_VBLANK)
613 VIN("offset(%d)", private_vblank->offset);
615 return TDM_ERROR_NONE;
619 tdm_vblank_get_offset(tdm_vblank *vblank, int *offset)
621 tdm_private_vblank *private_vblank = vblank;
623 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
624 TDM_RETURN_VAL_IF_FAIL(offset != NULL, TDM_ERROR_INVALID_PARAMETER);
626 *offset = private_vblank->offset;
628 return TDM_ERROR_NONE;
632 tdm_vblank_set_enable_fake(tdm_vblank *vblank, unsigned int enable_fake)
634 tdm_private_vblank *private_vblank = vblank;
636 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
638 if (private_vblank->enable_fake == enable_fake)
639 return TDM_ERROR_NONE;
641 private_vblank->enable_fake = enable_fake;
643 if (tdm_debug_module & TDM_DEBUG_VBLANK)
644 VIN("enable_fake(%d)", private_vblank->enable_fake);
646 return TDM_ERROR_NONE;
650 tdm_vblank_get_enable_fake(tdm_vblank *vblank, unsigned int *enable_fake)
652 tdm_private_vblank *private_vblank = vblank;
654 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
655 TDM_RETURN_VAL_IF_FAIL(enable_fake != NULL, TDM_ERROR_INVALID_PARAMETER);
657 *enable_fake = private_vblank->enable_fake;
659 return TDM_ERROR_NONE;
663 _tdm_vblank_sw_timer_update(tdm_private_vblank *private_vblank)
665 tdm_vblank_wait_info *first_wait_info = NULL;
670 if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
672 return TDM_ERROR_OPERATION_FAILED;
675 first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
676 curr = tdm_helper_get_time();
677 target = first_wait_info->target_time;
679 /* ms_delay should be more that 1 */
683 ms_delay = ceil((target - curr) * 1000.0);
689 VER("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
690 else if (tdm_debug_module & TDM_DEBUG_VBLANK)
691 VIN("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
693 tdm_display_lock(private_vblank->dpy);
695 if (!private_vblank->SW_timer) {
696 private_vblank->SW_timer =
697 tdm_event_loop_add_timer_handler(private_vblank->dpy,
698 _tdm_vblank_cb_vblank_SW,
701 if (!private_vblank->SW_timer) {
702 tdm_display_unlock(private_vblank->dpy);
703 VER("couldn't add timer");
706 VIN("Use SW vblank");
709 ret = tdm_event_loop_source_timer_update(private_vblank->SW_timer, ms_delay);
710 if (ret != TDM_ERROR_NONE) {
711 tdm_display_unlock(private_vblank->dpy);
712 VER("couldn't update timer");
716 tdm_display_unlock(private_vblank->dpy);
718 return TDM_ERROR_NONE;
722 _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
723 unsigned int tv_sec, unsigned int tv_usec,
726 tdm_vblank_wait_info *wait_info = user_data;
727 tdm_private_vblank *private_vblank;
729 if (!_tdm_vblank_check_valid_wait(wait_info)) {
730 TDM_DBG("can't find wait(%p) from valid_wait_list", wait_info);
734 private_vblank = wait_info->private_vblank;
735 TDM_RETURN_IF_FAIL(private_vblank != NULL);
737 if (!_tdm_vblank_find_wait(wait_info, &private_vblank->HW_wait_list)) {
738 VDB("can't find wait(%p)", wait_info);
742 if (wait_info->type == VBLANK_TYPE_HW_SW) {
745 LIST_DEL(&wait_info->link);
747 /* kernel sends the wrong time of first vblank event. and the time of
748 * second vblank is correct.
750 wait_info->target_time = TDM_TIME(tv_sec, tv_usec);
751 wait_info->target_time += (((double)private_vblank->offset) / 1000.0);
753 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
755 ret = _tdm_vblank_sw_timer_update(private_vblank);
757 /* wait_info will be freed in _tdm_vblank_cb_vblank_SW() */
758 if (ret == TDM_ERROR_NONE) {
759 if (tdm_debug_module & TDM_DEBUG_VBLANK)
760 VIN("wait(%p) SW timer", wait_info);
764 VWR("couldn't update sw timer");
767 /* tv_sec & tv_usec shouldn't be zero. But sometimes they are zero in some hardware.
768 * We need to prohibit that last_time becomes zero because "last_time == 0" means
769 * that a tdm_vblank object is just created and doesn't have the first vblank event.
770 * If last_time becomes 0, it would make issue.
772 if (tv_sec == 0 && tv_usec == 0) {
773 double curr = tdm_helper_get_time();
774 tv_sec = TDM_TIME_SEC(curr);
775 tv_usec = TDM_TIME_USEC(curr);
778 private_vblank->last_seq = wait_info->target_seq;
779 private_vblank->last_time = TDM_TIME(tv_sec, tv_usec);
781 if (tdm_debug_module & TDM_DEBUG_VBLANK)
782 VIN("wait(%p) last(%.6f) sequence(%u) done", wait_info, private_vblank->last_time, wait_info->target_seq);
785 wait_info->func(private_vblank, TDM_ERROR_NONE, wait_info->target_seq,
786 tv_sec, tv_usec, wait_info->user_data);
788 LIST_DEL(&wait_info->link);
789 _tdm_vblank_valid_list_del(&wait_info->valid_link);
794 _tdm_vblank_wait_HW(tdm_vblank_wait_info *wait_info)
796 tdm_private_vblank *private_vblank = wait_info->private_vblank;
800 _tdm_vblank_insert_wait(wait_info, &private_vblank->HW_wait_list);
802 hw_interval = wait_info->interval * private_vblank->quotient;
804 if (private_vblank->last_time == 0) {
805 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
806 private_vblank->last_seq = 0;
807 private_vblank->last_time = tdm_helper_get_time();
809 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
810 wait_info->target_seq = 1;
811 if (tdm_debug_module & TDM_DEBUG_VBLANK)
812 VIN("wait(%p) last(%.6f) hw_itvl(%d) targ_seq(%u)",
813 wait_info, private_vblank->last_time, hw_interval, wait_info->target_seq);
815 double last, prev, req, curr, target;
818 last = private_vblank->last_time;
819 req = wait_info->req_time;
821 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
822 prev = last + private_vblank->vblank_gap * skip;
824 curr = tdm_helper_get_time();
826 while (target < curr)
827 target += (private_vblank->vblank_gap * wait_info->interval);
829 hw_interval = (unsigned int)((target - curr) / private_vblank->HW_vblank_gap + TDM_TIME_MARGIN) + 1;
831 wait_info->target_seq = private_vblank->last_seq;
832 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
834 if (hw_interval > 300)
835 VER("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
836 wait_info, last, req - last, prev - last, curr - last, target, target - last,
837 skip, hw_interval, wait_info->target_seq);
838 else if (tdm_debug_module & TDM_DEBUG_VBLANK)
839 VIN("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
840 wait_info, last, req - last, prev - last, curr - last, target, target - last,
841 skip, hw_interval, wait_info->target_seq);
844 if (private_vblank->add_front)
845 ret = tdm_output_wait_vblank_add_front(private_vblank->output, hw_interval, 0,
846 _tdm_vblank_cb_vblank_HW, wait_info);
848 ret = tdm_output_wait_vblank(private_vblank->output, hw_interval, 0,
849 _tdm_vblank_cb_vblank_HW, wait_info);
851 if (ret != TDM_ERROR_NONE) {
852 LIST_DEL(&wait_info->link);
856 if (tdm_debug_module & TDM_DEBUG_VBLANK)
857 VIN("wait(%p) waiting", wait_info);
859 return TDM_ERROR_NONE;
863 _tdm_vblank_cb_vblank_SW(void *user_data)
865 tdm_private_vblank *private_vblank = user_data;
867 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_OPERATION_FAILED);
869 return tdm_vblank_cb_vblank_SW(private_vblank, 0);
873 tdm_vblank_cb_vblank_SW(tdm_vblank *vblank, double vblank_stamp)
875 tdm_private_vblank *private_vblank;
876 tdm_vblank_wait_info *first_wait_info = NULL, *w = NULL, *ww = NULL;
878 TDM_RETURN_VAL_IF_FAIL(vblank || vblank_stamp > 0, TDM_ERROR_INVALID_PARAMETER);
881 private_vblank = vblank;
883 private_vblank = _tdm_vblank_find(vblank_stamp);
884 if (!private_vblank) {
885 TDM_DBG("can't find vblank(%.0f) from valid_list", vblank_stamp);
886 return TDM_ERROR_NONE;
890 if (private_vblank->owner_tid != syscall(SYS_gettid)) {
891 tdm_thread_cb_vblank_sw vblank_sw;
892 tdm_private_display *private_display = private_vblank->dpy;
895 vblank_sw.base.type = TDM_THREAD_CB_VBLANK_SW;
896 vblank_sw.base.length = sizeof vblank_sw;
897 vblank_sw.vblank_stamp = private_vblank->stamp;
899 ret = tdm_thread_send_cb(private_display->private_loop, &vblank_sw.base);
900 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
902 return TDM_ERROR_NONE;
905 if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
907 return TDM_ERROR_OPERATION_FAILED;
910 first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
911 TDM_RETURN_VAL_IF_FAIL(first_wait_info != NULL, TDM_ERROR_OPERATION_FAILED);
913 if (private_vblank->last_seq >= first_wait_info->target_seq)
914 TDM_ERR("last_seq(%u) target_seq(%u)", private_vblank->last_seq, first_wait_info->target_seq);
916 private_vblank->last_seq = first_wait_info->target_seq;
917 private_vblank->last_time = first_wait_info->target_time;
919 if (tdm_debug_module & TDM_DEBUG_VBLANK)
920 VIN("wait(%p) last(%.6f) sequence(%u) done", first_wait_info, private_vblank->last_time, first_wait_info->target_seq);
922 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
923 if (w->target_time != first_wait_info->target_time)
927 _tdm_vblank_valid_list_del(&w->valid_link);
930 tdm_display_unlock(private_vblank->dpy);
931 w->func(private_vblank, TDM_ERROR_NONE, w->target_seq,
932 TDM_TIME_SEC(w->target_time), TDM_TIME_USEC(w->target_time),
934 tdm_display_lock(private_vblank->dpy);
940 return TDM_ERROR_NONE;
944 _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info)
946 tdm_private_vblank *private_vblank = wait_info->private_vblank;
949 if (private_vblank->last_time == 0) {
950 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
951 private_vblank->last_seq = 0;
952 private_vblank->last_time = tdm_helper_get_time();
954 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
955 wait_info->target_seq = 1;
956 wait_info->target_time = private_vblank->last_time + 0.001;
958 if (tdm_debug_module & TDM_DEBUG_VBLANK)
959 VIN("wait(%p) last(%.6f) target(%.6f) target sequence(%u)",
960 wait_info, private_vblank->last_time, wait_info->target_time, wait_info->target_seq);
962 double last, prev, req, curr, target;
965 last = private_vblank->last_time;
966 req = wait_info->req_time;
968 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
969 prev = last + private_vblank->vblank_gap * skip;
971 curr = tdm_helper_get_time();
972 target = prev + private_vblank->vblank_gap * wait_info->interval;
974 while (target < curr)
975 target += private_vblank->vblank_gap;
977 wait_info->target_seq = private_vblank->last_seq;
978 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
980 wait_info->target_time = target;
982 if (tdm_debug_module & TDM_DEBUG_VBLANK)
983 VIN("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) targ_seq(%u)",
984 wait_info, last, req - last, prev - last, curr - last,
985 target, target - last, skip, wait_info->target_seq);
988 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
990 ret = _tdm_vblank_sw_timer_update(private_vblank);
991 if (ret != TDM_ERROR_NONE) {
992 LIST_DEL(&wait_info->link);
993 VER("couldn't update sw timer");
997 return TDM_ERROR_NONE;
1001 tdm_vblank_wait(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1002 unsigned int interval, tdm_vblank_handler func, void *user_data)
1004 tdm_private_vblank *private_vblank = vblank;
1005 tdm_vblank_wait_info *wait_info;
1009 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1010 TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1012 if (private_vblank->owner_tid != syscall(SYS_gettid)) {
1013 TDM_ERR("SHOULD be called in the owner thread(%d)", (int)private_vblank->owner_tid);
1014 return TDM_ERROR_BAD_REQUEST;
1017 if (private_vblank->dpms != TDM_OUTPUT_DPMS_ON && !private_vblank->enable_fake) {
1018 VIN("can't wait a vblank because of DPMS off");
1019 return TDM_ERROR_DPMS_OFF;
1022 wait_info = calloc(1, sizeof * wait_info);
1024 VER("alloc failed");
1025 return TDM_ERROR_OUT_OF_MEMORY;
1028 /* set request time to current time if 0. This function seems to be called in server side. */
1029 if (req_sec == 0 && req_usec == 0) {
1030 double curr = tdm_helper_get_time();
1031 req_sec = TDM_TIME_SEC(curr);
1032 req_usec = TDM_TIME_USEC(curr);
1035 LIST_INITHEAD(&wait_info->link);
1037 _tdm_vblank_valid_list_add(&wait_info->valid_link, &valid_wait_list);
1039 wait_info->stamp = ++stamp;
1040 wait_info->req_time = TDM_TIME(req_sec, req_usec);
1041 wait_info->interval = interval;
1042 wait_info->func = func;
1043 wait_info->user_data = user_data;
1044 wait_info->private_vblank = private_vblank;
1046 if (private_vblank->ignore_global_fps ||
1047 vblank_global_fps == 0 ||
1048 private_vblank->fps < vblank_global_fps)
1049 fps = private_vblank->fps;
1051 fps = vblank_global_fps;
1053 if (private_vblank->check_HW_or_SW) {
1054 private_vblank->check_HW_or_SW = 0;
1055 private_vblank->vblank_gap = 1.0 / fps;
1056 private_vblank->quotient = private_vblank->vrefresh / fps;
1059 /* 1) if fps != factor of vrefresh, SW timer
1060 * 2) if fps == factor of vrefresh && dpms == off, SW timer (Fake HW vblank)
1061 * 2) if fps == factor of vrefresh && dpms == on && offset == 0, HW vblank
1062 * 3) if fps == factor of vrefresh && dpms == on && offset != 0, HW vblank + SW timer
1063 * In case of 1), we really don't need to align with HW vblank.
1065 if (private_vblank->vrefresh % fps)
1066 wait_info->type = VBLANK_TYPE_SW;
1067 else if (private_vblank->dpms == TDM_OUTPUT_DPMS_OFF)
1068 wait_info->type = VBLANK_TYPE_SW_FAKE;
1069 else if (private_vblank->offset == 0)
1070 wait_info->type = VBLANK_TYPE_HW;
1072 wait_info->type = VBLANK_TYPE_HW_SW;
1074 if (wait_info->type == VBLANK_TYPE_SW || wait_info->type == VBLANK_TYPE_SW_FAKE)
1075 ret = _tdm_vblank_wait_SW(wait_info);
1077 ret = _tdm_vblank_wait_HW(wait_info);
1078 if (ret == TDM_ERROR_DPMS_OFF)
1079 ret = _tdm_vblank_wait_SW(wait_info);
1082 if (ret != TDM_ERROR_NONE) {
1083 LIST_DEL(&wait_info->link);
1084 _tdm_vblank_valid_list_del(&wait_info->valid_link);
1086 tdm_display_lock(private_vblank->dpy);
1087 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, wait_info);
1088 tdm_display_unlock(private_vblank->dpy);
1094 return TDM_ERROR_NONE;
1098 tdm_vblank_wait_seq(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1099 unsigned int sequence, tdm_vblank_handler func, void *user_data)
1101 tdm_private_vblank *private_vblank = vblank;
1102 unsigned int interval;
1104 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1105 TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1107 /* if the sequence of vblank reaches the max value, sequence can be 0. */
1109 if (private_vblank->last_seq == 0) {
1110 TDM_WRN("can't calculate interval with sequence(%u)", sequence);
1112 } else if (sequence > private_vblank->last_seq ||
1113 TDM_VBLANK_SEQ_REACHED_MAX(sequence, private_vblank->last_seq)) {
1114 double last, curr, seq_target;
1116 last = private_vblank->last_time;
1117 curr = tdm_helper_get_time();
1118 seq_target = last + private_vblank->vblank_gap * (sequence - private_vblank->last_seq);
1120 /* If target is old or too close(1ms) to current, we call the handler immediately.
1121 * 2ms? it seems too much.
1123 if (seq_target < curr) {
1124 func(vblank, TDM_ERROR_NONE, sequence,
1125 TDM_TIME_SEC(seq_target), TDM_TIME_USEC(seq_target),
1127 return TDM_ERROR_NONE;
1128 } else if ((seq_target - curr) < 0.001) { /* 1ms */
1129 func(vblank, TDM_ERROR_NONE, sequence,
1130 TDM_TIME_SEC(curr), TDM_TIME_USEC(curr),
1132 return TDM_ERROR_NONE;
1135 interval = (unsigned int)((seq_target - curr) / private_vblank->vblank_gap + TDM_TIME_MARGIN) + 1;
1137 /* this seems error. But we handle this like normal to avoid the unexpected error in cliend side */
1138 TDM_WRN("sequence(%u) should be over the last sequence(%u)", sequence, private_vblank->last_seq);
1139 func(vblank, TDM_ERROR_NONE, private_vblank->last_seq,
1140 TDM_TIME_SEC(private_vblank->last_time), TDM_TIME_USEC(private_vblank->last_time),
1142 return TDM_ERROR_NONE;
1145 return tdm_vblank_wait(vblank, req_sec, req_usec, interval, func, user_data);
1149 tdm_vblank_set_add_front(tdm_vblank *vblank, unsigned int add_front)
1151 tdm_private_vblank *private_vblank = vblank;
1153 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1155 TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
1157 if (private_vblank->add_front == add_front)
1158 return TDM_ERROR_NONE;
1160 private_vblank->add_front = add_front;
1162 return TDM_ERROR_NONE;
1166 tdm_vblank_set_resource(tdm_vblank *vblank, struct wl_resource *resource)
1168 tdm_private_vblank *private_vblank = vblank;
1170 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1171 TDM_RETURN_VAL_IF_FAIL(private_vblank->resource == NULL, TDM_ERROR_OPERATION_FAILED);
1173 private_vblank->resource = resource;
1175 return TDM_ERROR_NONE;
1179 tdm_vblank_get_vblank_list_information(tdm_display *dpy, char *reply, int *len)
1181 tdm_private_vblank *v = NULL;
1183 TDM_SNPRINTF(reply, len, "[Client Vblank List]\n");
1184 TDM_SNPRINTF(reply, len, "* global fps: %u\n", vblank_global_fps);
1185 TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1186 TDM_SNPRINTF(reply, len, "name fps ignore offset fake process\n");
1187 TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1189 pthread_mutex_lock(&valid_list_lock);
1190 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
1191 struct wl_client *client = wl_resource_get_client(v->resource);
1192 const char *proc_name = NULL;
1196 wl_client_get_credentials(client, &pid, NULL, NULL);
1197 proc_name = tdm_server_get_client_name(pid);
1200 TDM_SNPRINTF(reply, len, "%-12s %u %u %d %u %s (pid: %u)\n",
1201 v->name, v->fps, v->ignore_global_fps, v->offset, v->enable_fake,
1202 (proc_name) ? proc_name : "Unknown", pid);
1204 pthread_mutex_unlock(&valid_list_lock);
1206 TDM_SNPRINTF(reply, len, "\n");