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;
102 unsigned int quotient;
104 unsigned int last_seq;
107 unsigned int add_front;
108 struct wl_resource *resource;
111 double HW_vblank_gap;
112 struct list_head HW_wait_list;
115 tdm_event_loop_source *SW_timer;
116 struct list_head SW_wait_list;
117 } tdm_private_vblank;
119 struct _tdm_vblank_wait_info {
120 struct list_head link;
121 struct list_head valid_link;
126 unsigned int interval;
128 tdm_vblank_handler func;
130 tdm_private_vblank *private_vblank;
132 tdm_vblank_wait_type type;
135 unsigned int target_seq;
138 /* valid_vblank_list and valid_wait_list should be protected by valid_list_lock because
139 * tdm_vblank can be used in multi-thread.
141 static pthread_mutex_t valid_list_lock;
142 static struct list_head valid_vblank_list;
143 static struct list_head valid_wait_list;
144 static unsigned int vblank_list_inited;
145 static double stamp = 0;
147 static tdm_error _tdm_vblank_cb_vblank_SW(void *user_data);
148 static tdm_error _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info);
149 static void _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
150 unsigned int tv_sec, unsigned int tv_usec,
155 _print_list(struct list_head *list)
157 tdm_vblank_wait_info *w = NULL;
159 LIST_FOR_EACH_ENTRY(w, list, link) {
160 printf(" %d", w->interval);
167 _tdm_vblank_valid_list_add(struct list_head *valid_link, struct list_head *valid_list)
169 pthread_mutex_lock(&valid_list_lock);
170 LIST_ADDTAIL(valid_link, valid_list);
171 pthread_mutex_unlock(&valid_list_lock);
175 _tdm_vblank_valid_list_del(struct list_head *valid_link)
177 pthread_mutex_lock(&valid_list_lock);
178 LIST_DEL(valid_link);
179 pthread_mutex_unlock(&valid_list_lock);
182 static inline tdm_private_vblank*
183 _tdm_vblank_find(double vblank_stamp)
185 tdm_private_vblank *v = NULL;
190 pthread_mutex_lock(&valid_list_lock);
191 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
192 if (v->stamp == vblank_stamp) {
193 pthread_mutex_unlock(&valid_list_lock);
197 pthread_mutex_unlock(&valid_list_lock);
202 static inline unsigned int
203 _tdm_vblank_check_valid_wait(tdm_vblank_wait_info *wait_info)
205 tdm_vblank_wait_info *w = NULL;
210 pthread_mutex_lock(&valid_list_lock);
211 LIST_FOR_EACH_ENTRY(w, &valid_wait_list, valid_link) {
212 if (w == wait_info) {
213 pthread_mutex_unlock(&valid_list_lock);
217 pthread_mutex_unlock(&valid_list_lock);
222 static inline unsigned int
223 _tdm_vblank_find_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
225 tdm_vblank_wait_info *w = NULL;
230 LIST_FOR_EACH_ENTRY(w, list, link) {
231 if (w->stamp == wait_info->stamp)
239 _tdm_vblank_insert_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
241 tdm_vblank_wait_info *w = NULL;
242 tdm_vblank_wait_info *found = NULL;
244 if (LIST_IS_EMPTY(list)) {
245 LIST_ADDTAIL(&wait_info->link, list);
249 LIST_FOR_EACH_ENTRY(w, list, link) {
250 if (wait_info->type == VBLANK_TYPE_SW) {
251 if (wait_info->target_time == 0)
252 TDM_NEVER_GET_HERE();
253 if (w->target_time <= wait_info->target_time) {
258 if (w->interval <= wait_info->interval) {
266 LIST_ADD(&wait_info->link, &found->link);
268 LIST_ADDTAIL(&wait_info->link, list->next);
272 _tdm_vblank_change_to_SW(tdm_private_vblank *private_vblank)
274 tdm_vblank_wait_info *w = NULL, *ww = NULL;
276 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
278 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
279 w->type = VBLANK_TYPE_SW_FAKE;
280 _tdm_vblank_wait_SW(w);
285 _tdm_vblank_free_HW_wait(tdm_private_vblank *private_vblank, tdm_error error, unsigned int call_cb)
287 tdm_vblank_wait_info *w = NULL, *ww = NULL;
289 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
291 _tdm_vblank_valid_list_del(&w->valid_link);
292 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
294 if (call_cb && w->func)
295 w->func(private_vblank, error, 0, 0, 0, w->user_data);
302 _tdm_vblank_cb_output_change(tdm_output *output, tdm_output_change_type type,
303 tdm_value value, void *user_data)
305 tdm_private_vblank *private_vblank = user_data;
307 TDM_RETURN_IF_FAIL(private_vblank != NULL);
310 case TDM_OUTPUT_CHANGE_DPMS:
311 if (private_vblank->dpms == value.u32)
313 VDB("dpms %s", tdm_dpms_str(value.u32));
314 private_vblank->dpms = value.u32;
315 private_vblank->check_HW_or_SW = 1;
316 if (private_vblank->dpms != TDM_OUTPUT_DPMS_ON) {
317 if (private_vblank->enable_fake)
318 _tdm_vblank_change_to_SW(private_vblank);
320 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_DPMS_OFF, 1);
323 case TDM_OUTPUT_CHANGE_CONNECTION:
324 VDB("output %s", tdm_status_str(value.u32));
325 if (value.u32 == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
326 _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
334 tdm_vblank_set_client_vblank_fps(unsigned int pid, const char *name, unsigned int fps)
336 tdm_private_vblank *v = NULL;
338 TDM_RETURN_VAL_IF_FAIL(pid > 0, TDM_ERROR_INVALID_PARAMETER);
339 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
341 TDM_INFO("pid: %u, name: %s, fps: %d", pid, name, fps);
343 pthread_mutex_lock(&valid_list_lock);
344 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
345 struct wl_client *client;
346 pid_t client_pid = 0;
351 client = wl_resource_get_client(v->resource);
355 wl_client_get_credentials(client, &client_pid, NULL, NULL);
357 if (client_pid != pid)
360 if (name && strncmp(name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN)) {
361 if (strncmp(v->name, name, TDM_NAME_LEN))
365 tdm_vblank_set_fps(v, fps);
367 TDM_INFO("(pid:%u) '%s' fps changed: %d", pid, v->name, fps);
369 pthread_mutex_unlock(&valid_list_lock);
371 return TDM_ERROR_NONE;
375 tdm_vblank_create(tdm_display *dpy, tdm_output *output, tdm_error *error)
377 tdm_private_vblank *private_vblank;
378 const tdm_output_mode *mode = NULL;
379 tdm_output_dpms dpms = TDM_OUTPUT_DPMS_ON;
382 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(dpy != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
383 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(output != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
386 *error = TDM_ERROR_NONE;
388 if (!vblank_list_inited) {
389 if (pthread_mutex_init(&valid_list_lock, NULL)) {
390 TDM_ERR("mutex init failed: %m");
392 *error = TDM_ERROR_OPERATION_FAILED;
395 LIST_INITHEAD(&valid_vblank_list);
396 LIST_INITHEAD(&valid_wait_list);
397 vblank_list_inited = 1;
400 tdm_output_get_mode(output, &mode);
403 *error = TDM_ERROR_OPERATION_FAILED;
408 tdm_output_get_dpms(output, &dpms);
410 private_vblank = calloc(1, sizeof * private_vblank);
411 if (!private_vblank) {
413 *error = TDM_ERROR_OUT_OF_MEMORY;
418 tdm_output_add_change_handler(output, _tdm_vblank_cb_output_change, private_vblank);
420 private_vblank->stamp = ++stamp;
421 private_vblank->owner_tid = syscall(SYS_gettid);
422 private_vblank->dpy = dpy;
423 private_vblank->output = output;
424 private_vblank->dpms = dpms;
425 private_vblank->vrefresh = mode->vrefresh;
426 private_vblank->HW_vblank_gap = 1.0 / private_vblank->vrefresh;
428 private_vblank->check_HW_or_SW = 1;
429 private_vblank->fps = mode->vrefresh;
431 strncpy(private_vblank->name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN - 1);
432 private_vblank->name[TDM_NAME_LEN - 1] = '\0';
434 LIST_INITHEAD(&private_vblank->HW_wait_list);
435 LIST_INITHEAD(&private_vblank->SW_wait_list);
437 _tdm_vblank_valid_list_add(&private_vblank->valid_link, &valid_vblank_list);
439 if (tdm_debug_module & TDM_DEBUG_VBLANK)
440 VIN("created. vrefresh(%d) dpms(%d)",
441 private_vblank->vrefresh, private_vblank->dpms);
443 return (tdm_vblank *)private_vblank;
447 tdm_vblank_destroy(tdm_vblank *vblank)
449 tdm_private_vblank *private_vblank = vblank;
450 tdm_vblank_wait_info *w = NULL, *ww = NULL;
455 _tdm_vblank_valid_list_del(&private_vblank->valid_link);
457 if (private_vblank->SW_timer) {
458 tdm_display_lock(private_vblank->dpy);
459 tdm_event_loop_source_remove(private_vblank->SW_timer);
460 tdm_display_unlock(private_vblank->dpy);
463 tdm_output_remove_change_handler(private_vblank->output,
464 _tdm_vblank_cb_output_change, private_vblank);
466 _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
468 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
470 _tdm_vblank_valid_list_del(&w->valid_link);
474 if (tdm_debug_module & TDM_DEBUG_VBLANK)
477 free(private_vblank);
481 tdm_vblank_set_name(tdm_vblank *vblank, const char *name)
483 tdm_private_vblank *private_vblank = vblank;
485 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
488 name = TDM_VBLANK_DEFAULT_NAME;
490 strncpy(private_vblank->name, name, TDM_NAME_LEN - 1);
491 private_vblank->name[TDM_NAME_LEN - 1] = '\0';
493 if (tdm_debug_module & TDM_DEBUG_VBLANK)
494 VIN("name(%s)", name);
496 return TDM_ERROR_NONE;
500 tdm_vblank_get_name(tdm_vblank *vblank, const char **name)
502 tdm_private_vblank *private_vblank = vblank;
504 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
505 TDM_RETURN_VAL_IF_FAIL(name != NULL, TDM_ERROR_INVALID_PARAMETER);
507 *name = (const char*)private_vblank->name;
509 return TDM_ERROR_NONE;
513 tdm_vblank_set_fps(tdm_vblank *vblank, unsigned int fps)
515 tdm_private_vblank *private_vblank = vblank;
517 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
518 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
520 if (private_vblank->fps == fps)
521 return TDM_ERROR_NONE;
523 private_vblank->fps = fps;
524 private_vblank->check_HW_or_SW = 1;
526 if (tdm_debug_module & TDM_DEBUG_VBLANK)
527 VIN("fps(%d)", private_vblank->fps);
529 return TDM_ERROR_NONE;
533 tdm_vblank_get_fps(tdm_vblank *vblank, unsigned int *fps)
535 tdm_private_vblank *private_vblank = vblank;
537 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
538 TDM_RETURN_VAL_IF_FAIL(fps != NULL, TDM_ERROR_INVALID_PARAMETER);
540 *fps = private_vblank->fps;
542 return TDM_ERROR_NONE;
546 tdm_vblank_set_offset(tdm_vblank *vblank, int offset)
548 tdm_private_vblank *private_vblank = vblank;
550 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
552 if (private_vblank->offset == offset)
553 return TDM_ERROR_NONE;
555 private_vblank->offset = offset;
556 private_vblank->check_HW_or_SW = 1;
558 if (tdm_debug_module & TDM_DEBUG_VBLANK)
559 VIN("offset(%d)", private_vblank->offset);
561 return TDM_ERROR_NONE;
565 tdm_vblank_get_offset(tdm_vblank *vblank, int *offset)
567 tdm_private_vblank *private_vblank = vblank;
569 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
570 TDM_RETURN_VAL_IF_FAIL(offset != NULL, TDM_ERROR_INVALID_PARAMETER);
572 *offset = private_vblank->offset;
574 return TDM_ERROR_NONE;
578 tdm_vblank_set_enable_fake(tdm_vblank *vblank, unsigned int enable_fake)
580 tdm_private_vblank *private_vblank = vblank;
582 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
584 if (private_vblank->enable_fake == enable_fake)
585 return TDM_ERROR_NONE;
587 private_vblank->enable_fake = enable_fake;
589 if (tdm_debug_module & TDM_DEBUG_VBLANK)
590 VIN("enable_fake(%d)", private_vblank->enable_fake);
592 return TDM_ERROR_NONE;
596 tdm_vblank_get_enable_fake(tdm_vblank *vblank, unsigned int *enable_fake)
598 tdm_private_vblank *private_vblank = vblank;
600 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
601 TDM_RETURN_VAL_IF_FAIL(enable_fake != NULL, TDM_ERROR_INVALID_PARAMETER);
603 *enable_fake = private_vblank->enable_fake;
605 return TDM_ERROR_NONE;
609 _tdm_vblank_sw_timer_update(tdm_private_vblank *private_vblank)
611 tdm_vblank_wait_info *first_wait_info = NULL;
616 if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
618 return TDM_ERROR_OPERATION_FAILED;
621 first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
622 curr = tdm_helper_get_time();
623 target = first_wait_info->target_time;
625 /* ms_delay should be more that 1 */
629 ms_delay = ceil((target - curr) * 1000.0);
635 VER("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
636 else if (tdm_debug_module & TDM_DEBUG_VBLANK)
637 VIN("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
639 tdm_display_lock(private_vblank->dpy);
641 if (!private_vblank->SW_timer) {
642 private_vblank->SW_timer =
643 tdm_event_loop_add_timer_handler(private_vblank->dpy,
644 _tdm_vblank_cb_vblank_SW,
647 if (!private_vblank->SW_timer) {
648 tdm_display_unlock(private_vblank->dpy);
649 VER("couldn't add timer");
652 VIN("Use SW vblank");
655 ret = tdm_event_loop_source_timer_update(private_vblank->SW_timer, ms_delay);
656 if (ret != TDM_ERROR_NONE) {
657 tdm_display_unlock(private_vblank->dpy);
658 VER("couldn't update timer");
662 tdm_display_unlock(private_vblank->dpy);
664 return TDM_ERROR_NONE;
668 _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
669 unsigned int tv_sec, unsigned int tv_usec,
672 tdm_vblank_wait_info *wait_info = user_data;
673 tdm_private_vblank *private_vblank;
675 if (!_tdm_vblank_check_valid_wait(wait_info)) {
676 TDM_DBG("can't find wait(%p) from valid_wait_list", wait_info);
680 private_vblank = wait_info->private_vblank;
681 TDM_RETURN_IF_FAIL(private_vblank != NULL);
683 if (!_tdm_vblank_find_wait(wait_info, &private_vblank->HW_wait_list)) {
684 VDB("can't find wait(%p)", wait_info);
688 if (wait_info->type == VBLANK_TYPE_HW_SW) {
691 LIST_DEL(&wait_info->link);
693 /* kernel sends the wrong time of first vblank event. and the time of
694 * second vblank is correct.
696 wait_info->target_time = TDM_TIME(tv_sec, tv_usec);
697 wait_info->target_time += (((double)private_vblank->offset) / 1000.0);
699 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
701 ret = _tdm_vblank_sw_timer_update(private_vblank);
703 /* wait_info will be freed in _tdm_vblank_cb_vblank_SW() */
704 if (ret == TDM_ERROR_NONE) {
705 if (tdm_debug_module & TDM_DEBUG_VBLANK)
706 VIN("wait(%p) SW timer", wait_info);
710 VWR("couldn't update sw timer");
713 /* tv_sec & tv_usec shouldn't be zero. But sometimes they are zero in some hardware.
714 * We need to prohibit that last_time becomes zero because "last_time == 0" means
715 * that a tdm_vblank object is just created and doesn't have the first vblank event.
716 * If last_time becomes 0, it would make issue.
718 if (tv_sec == 0 && tv_usec == 0) {
719 double curr = tdm_helper_get_time();
720 tv_sec = TDM_TIME_SEC(curr);
721 tv_usec = TDM_TIME_USEC(curr);
724 private_vblank->last_seq = wait_info->target_seq;
725 private_vblank->last_time = TDM_TIME(tv_sec, tv_usec);
727 if (tdm_debug_module & TDM_DEBUG_VBLANK)
728 VIN("wait(%p) last(%.6f) sequence(%u) done", wait_info, private_vblank->last_time, wait_info->target_seq);
731 wait_info->func(private_vblank, TDM_ERROR_NONE, wait_info->target_seq,
732 tv_sec, tv_usec, wait_info->user_data);
734 LIST_DEL(&wait_info->link);
735 _tdm_vblank_valid_list_del(&wait_info->valid_link);
740 _tdm_vblank_wait_HW(tdm_vblank_wait_info *wait_info)
742 tdm_private_vblank *private_vblank = wait_info->private_vblank;
746 _tdm_vblank_insert_wait(wait_info, &private_vblank->HW_wait_list);
748 hw_interval = wait_info->interval * private_vblank->quotient;
750 if (private_vblank->last_time == 0) {
751 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
752 private_vblank->last_seq = 0;
753 private_vblank->last_time = tdm_helper_get_time();
755 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
756 wait_info->target_seq = 1;
757 if (tdm_debug_module & TDM_DEBUG_VBLANK)
758 VIN("wait(%p) last(%.6f) hw_itvl(%d) targ_seq(%u)",
759 wait_info, private_vblank->last_time, hw_interval, wait_info->target_seq);
761 double last, prev, req, curr, target;
764 last = private_vblank->last_time;
765 req = wait_info->req_time;
767 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
768 prev = last + private_vblank->vblank_gap * skip;
770 curr = tdm_helper_get_time();
772 while (target < curr)
773 target += private_vblank->vblank_gap;
775 hw_interval = (unsigned int)((target - curr) / private_vblank->HW_vblank_gap + TDM_TIME_MARGIN) + 1;
777 wait_info->target_seq = private_vblank->last_seq;
778 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
780 if (hw_interval > 300)
781 VER("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
782 wait_info, last, req - last, prev - last, curr - last, target, target - last,
783 skip, hw_interval, wait_info->target_seq);
784 else if (tdm_debug_module & TDM_DEBUG_VBLANK)
785 VIN("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
786 wait_info, last, req - last, prev - last, curr - last, target, target - last,
787 skip, hw_interval, wait_info->target_seq);
790 if (private_vblank->add_front)
791 ret = tdm_output_wait_vblank_add_front(private_vblank->output, hw_interval, 0,
792 _tdm_vblank_cb_vblank_HW, wait_info);
794 ret = tdm_output_wait_vblank(private_vblank->output, hw_interval, 0,
795 _tdm_vblank_cb_vblank_HW, wait_info);
797 if (ret != TDM_ERROR_NONE) {
798 LIST_DEL(&wait_info->link);
802 if (tdm_debug_module & TDM_DEBUG_VBLANK)
803 VIN("wait(%p) waiting", wait_info);
805 return TDM_ERROR_NONE;
809 _tdm_vblank_cb_vblank_SW(void *user_data)
811 tdm_private_vblank *private_vblank = user_data;
813 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_OPERATION_FAILED);
815 return tdm_vblank_cb_vblank_SW(private_vblank, 0);
819 tdm_vblank_cb_vblank_SW(tdm_vblank *vblank, double vblank_stamp)
821 tdm_private_vblank *private_vblank;
822 tdm_vblank_wait_info *first_wait_info = NULL, *w = NULL, *ww = NULL;
824 TDM_RETURN_VAL_IF_FAIL(vblank || vblank_stamp > 0, TDM_ERROR_INVALID_PARAMETER);
827 private_vblank = vblank;
829 private_vblank = _tdm_vblank_find(vblank_stamp);
830 if (!private_vblank) {
831 TDM_DBG("can't find vblank(%.0f) from valid_list", vblank_stamp);
832 return TDM_ERROR_NONE;
836 if (private_vblank->owner_tid != syscall(SYS_gettid)) {
837 tdm_thread_cb_vblank_sw vblank_sw;
838 tdm_private_display *private_display = private_vblank->dpy;
841 vblank_sw.base.type = TDM_THREAD_CB_VBLANK_SW;
842 vblank_sw.base.length = sizeof vblank_sw;
843 vblank_sw.vblank_stamp = private_vblank->stamp;
845 ret = tdm_thread_send_cb(private_display->private_loop, &vblank_sw.base);
846 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
848 return TDM_ERROR_NONE;
851 if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
853 return TDM_ERROR_OPERATION_FAILED;
856 first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
857 TDM_RETURN_VAL_IF_FAIL(first_wait_info != NULL, TDM_ERROR_OPERATION_FAILED);
859 if (private_vblank->last_seq >= first_wait_info->target_seq)
860 TDM_ERR("last_seq(%u) target_seq(%u)", private_vblank->last_seq, first_wait_info->target_seq);
862 private_vblank->last_seq = first_wait_info->target_seq;
863 private_vblank->last_time = first_wait_info->target_time;
865 if (tdm_debug_module & TDM_DEBUG_VBLANK)
866 VIN("wait(%p) last(%.6f) sequence(%u) done", first_wait_info, private_vblank->last_time, first_wait_info->target_seq);
868 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
869 if (w->target_time != first_wait_info->target_time)
873 _tdm_vblank_valid_list_del(&w->valid_link);
876 tdm_display_unlock(private_vblank->dpy);
877 w->func(private_vblank, TDM_ERROR_NONE, w->target_seq,
878 TDM_TIME_SEC(w->target_time), TDM_TIME_USEC(w->target_time),
880 tdm_display_lock(private_vblank->dpy);
886 return TDM_ERROR_NONE;
890 _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info)
892 tdm_private_vblank *private_vblank = wait_info->private_vblank;
895 if (private_vblank->last_time == 0) {
896 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
897 private_vblank->last_seq = 0;
898 private_vblank->last_time = tdm_helper_get_time();
900 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
901 wait_info->target_seq = 1;
902 wait_info->target_time = private_vblank->last_time + 0.001;
904 if (tdm_debug_module & TDM_DEBUG_VBLANK)
905 VIN("wait(%p) last(%.6f) target(%.6f) target sequence(%u)",
906 wait_info, private_vblank->last_time, wait_info->target_time, wait_info->target_seq);
908 double last, prev, req, curr, target;
911 last = private_vblank->last_time;
912 req = wait_info->req_time;
914 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
915 prev = last + private_vblank->vblank_gap * skip;
917 curr = tdm_helper_get_time();
918 target = prev + private_vblank->vblank_gap * wait_info->interval;
920 while (target < curr)
921 target += private_vblank->vblank_gap;
923 wait_info->target_seq = private_vblank->last_seq;
924 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
926 wait_info->target_time = target;
928 if (tdm_debug_module & TDM_DEBUG_VBLANK)
929 VIN("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) targ_seq(%u)",
930 wait_info, last, req - last, prev - last, curr - last,
931 target, target - last, skip, wait_info->target_seq);
934 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
936 ret = _tdm_vblank_sw_timer_update(private_vblank);
937 if (ret != TDM_ERROR_NONE) {
938 LIST_DEL(&wait_info->link);
939 VER("couldn't update sw timer");
943 return TDM_ERROR_NONE;
947 tdm_vblank_wait(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
948 unsigned int interval, tdm_vblank_handler func, void *user_data)
950 tdm_private_vblank *private_vblank = vblank;
951 tdm_vblank_wait_info *wait_info;
954 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
955 TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
957 if (private_vblank->owner_tid != syscall(SYS_gettid)) {
958 TDM_ERR("SHOULD be called in the owner thread(%d)", (int)private_vblank->owner_tid);
959 return TDM_ERROR_BAD_REQUEST;
962 if (private_vblank->dpms != TDM_OUTPUT_DPMS_ON && !private_vblank->enable_fake) {
963 VIN("can't wait a vblank because of DPMS off");
964 return TDM_ERROR_DPMS_OFF;
967 wait_info = calloc(1, sizeof * wait_info);
970 return TDM_ERROR_OUT_OF_MEMORY;
973 /* set request time to current time if 0. This function seems to be called in server side. */
974 if (req_sec == 0 && req_usec == 0) {
975 double curr = tdm_helper_get_time();
976 req_sec = TDM_TIME_SEC(curr);
977 req_usec = TDM_TIME_USEC(curr);
980 LIST_INITHEAD(&wait_info->link);
982 _tdm_vblank_valid_list_add(&wait_info->valid_link, &valid_wait_list);
984 wait_info->stamp = ++stamp;
985 wait_info->req_time = TDM_TIME(req_sec, req_usec);
986 wait_info->interval = interval;
987 wait_info->func = func;
988 wait_info->user_data = user_data;
989 wait_info->private_vblank = private_vblank;
991 if (private_vblank->check_HW_or_SW) {
992 private_vblank->check_HW_or_SW = 0;
993 private_vblank->vblank_gap = 1.0 / private_vblank->fps;
994 private_vblank->quotient = private_vblank->vrefresh / private_vblank->fps;
997 /* 1) if fps != factor of vrefresh, SW timer
998 * 2) if fps == factor of vrefresh && dpms == off, SW timer (Fake HW vblank)
999 * 2) if fps == factor of vrefresh && dpms == on && offset == 0, HW vblank
1000 * 3) if fps == factor of vrefresh && dpms == on && offset != 0, HW vblank + SW timer
1001 * In case of 1), we really don't need to align with HW vblank.
1003 if (private_vblank->vrefresh % private_vblank->fps)
1004 wait_info->type = VBLANK_TYPE_SW;
1005 else if (private_vblank->dpms == TDM_OUTPUT_DPMS_OFF)
1006 wait_info->type = VBLANK_TYPE_SW_FAKE;
1007 else if (private_vblank->offset == 0)
1008 wait_info->type = VBLANK_TYPE_HW;
1010 wait_info->type = VBLANK_TYPE_HW_SW;
1012 if (wait_info->type == VBLANK_TYPE_SW || wait_info->type == VBLANK_TYPE_SW_FAKE)
1013 ret = _tdm_vblank_wait_SW(wait_info);
1015 ret = _tdm_vblank_wait_HW(wait_info);
1016 if (ret == TDM_ERROR_DPMS_OFF)
1017 ret = _tdm_vblank_wait_SW(wait_info);
1020 if (ret != TDM_ERROR_NONE) {
1021 LIST_DEL(&wait_info->link);
1022 _tdm_vblank_valid_list_del(&wait_info->valid_link);
1023 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, wait_info);
1028 return TDM_ERROR_NONE;
1032 tdm_vblank_wait_seq(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1033 unsigned int sequence, tdm_vblank_handler func, void *user_data)
1035 tdm_private_vblank *private_vblank = vblank;
1036 unsigned int interval;
1038 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1039 TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1041 /* if the sequence of vblank reaches the max value, sequence can be 0. */
1043 if (private_vblank->last_seq == 0) {
1044 TDM_WRN("can't calculate interval with sequence(%u)", sequence);
1046 } else if (sequence > private_vblank->last_seq ||
1047 TDM_VBLANK_SEQ_REACHED_MAX(sequence, private_vblank->last_seq)) {
1048 double last, curr, seq_target;
1050 last = private_vblank->last_time;
1051 curr = tdm_helper_get_time();
1052 seq_target = last + private_vblank->vblank_gap * (sequence - private_vblank->last_seq);
1054 /* If target is old or too close(1ms) to current, we call the handler immediately.
1055 * 2ms? it seems too much.
1057 if (seq_target < curr) {
1058 func(vblank, TDM_ERROR_NONE, sequence,
1059 TDM_TIME_SEC(seq_target), TDM_TIME_USEC(seq_target),
1061 return TDM_ERROR_NONE;
1062 } else if ((seq_target - curr) < 0.001) { /* 1ms */
1063 func(vblank, TDM_ERROR_NONE, sequence,
1064 TDM_TIME_SEC(curr), TDM_TIME_USEC(curr),
1066 return TDM_ERROR_NONE;
1069 interval = (unsigned int)((seq_target - curr) / private_vblank->vblank_gap + TDM_TIME_MARGIN) + 1;
1071 /* this seems error. But we handle this like normal to avoid the unexpected error in cliend side */
1072 TDM_WRN("sequence(%u) should be over the last sequence(%u)", sequence, private_vblank->last_seq);
1073 func(vblank, TDM_ERROR_NONE, private_vblank->last_seq,
1074 TDM_TIME_SEC(private_vblank->last_time), TDM_TIME_USEC(private_vblank->last_time),
1076 return TDM_ERROR_NONE;
1079 return tdm_vblank_wait(vblank, req_sec, req_usec, interval, func, user_data);
1083 tdm_vblank_set_add_front(tdm_vblank *vblank, unsigned int add_front)
1085 tdm_private_vblank *private_vblank = vblank;
1087 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1089 TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
1091 if (private_vblank->add_front == add_front)
1092 return TDM_ERROR_NONE;
1094 private_vblank->add_front = add_front;
1096 return TDM_ERROR_NONE;
1100 tdm_vblank_set_resource(tdm_vblank *vblank, struct wl_resource *resource)
1102 tdm_private_vblank *private_vblank = vblank;
1104 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1105 TDM_RETURN_VAL_IF_FAIL(private_vblank->resource == NULL, TDM_ERROR_OPERATION_FAILED);
1107 private_vblank->resource = resource;
1109 return TDM_ERROR_NONE;
1113 tdm_vblank_get_vblank_list_information(tdm_display *dpy, char *reply, int *len)
1115 tdm_private_vblank *v = NULL;
1117 TDM_SNPRINTF(reply, len, "[Client Vblank List]\n");
1118 TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1119 TDM_SNPRINTF(reply, len, "name fps offset fake process\n");
1120 TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1122 pthread_mutex_lock(&valid_list_lock);
1123 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
1124 struct wl_client *client = wl_resource_get_client(v->resource);
1125 const char *proc_name = NULL;
1129 wl_client_get_credentials(client, &pid, NULL, NULL);
1130 proc_name = tdm_server_get_client_name(pid);
1133 TDM_SNPRINTF(reply, len, "%-12s %u %d %u %s (pid: %u)\n",
1134 v->name, v->fps, v->offset, v->enable_fake,
1135 (proc_name) ? proc_name : "Unknown", pid);
1137 pthread_mutex_unlock(&valid_list_lock);
1139 TDM_SNPRINTF(reply, len, "\n");