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 #define TDM_VBLANK_DEFAULT_VREFRESH 30
59 /* We expact "(unsigned int)(0.0016667 / 0.0016667) = 1". But it becomes 0. */
60 #define TDM_TIME_MARGIN 0.0000001
62 #define TDM_VBLANK_UINT_MAX 4294967295U
63 #define TDM_VBLANK_UINT_1Q 1073741823U /* UINT_MAX / 4 */
64 #define TDM_VBLANK_UINT_3Q 3221225471U /* UINT_MAX / 4 * 3 */
66 /* (seq < TDM_VBLANK_UINT_1Q && TDM_VBLANK_UINT_3Q < last_seq) means
67 * that the sequence value has reached the max value and started from 0 again.
69 #define TDM_VBLANK_SEQ_REACHED_MAX(seq, last_seq) \
70 ((seq) < TDM_VBLANK_UINT_1Q && TDM_VBLANK_UINT_3Q < (last_seq))
72 #define VER(fmt, arg...) TDM_ERR("[%p] "fmt, private_vblank, ##arg)
73 #define VWR(fmt, arg...) TDM_WRN("[%p] "fmt, private_vblank, ##arg)
74 #define VIN(fmt, arg...) do { if (tdm_debug_module & TDM_DEBUG_VBLANK) TDM_INFO("[%p] "fmt, private_vblank, ##arg); } while (0)
75 #define VDB(fmt, arg...) do { if (tdm_debug_module & TDM_DEBUG_VBLANK) TDM_DBG("[%p] "fmt, private_vblank, ##arg); } while (0)
82 } tdm_vblank_wait_type;
85 VBLANK_EVENT_TYPE_NONE,
88 } tdm_vblank_event_type;
90 typedef struct _tdm_vblank_wait_info tdm_vblank_wait_info;
92 typedef struct _tdm_private_vblank {
93 struct list_head valid_link;
100 tdm_output_conn_status connection;
101 unsigned int vrefresh;
103 tdm_vblank_event_type last_type;
104 unsigned int check_HW_or_SW;
105 char name[TDM_NAME_LEN];
107 unsigned int fps_changeable;
109 unsigned int enable_fake;
110 unsigned int ignore_global_fps;
113 unsigned int quotient;
115 unsigned int last_seq;
118 unsigned int add_front;
119 struct wl_resource *resource;
122 double HW_vblank_gap;
123 struct list_head HW_wait_list;
126 tdm_event_loop_source *SW_timer;
127 struct list_head SW_wait_list;
128 } tdm_private_vblank;
130 struct _tdm_vblank_wait_info {
131 struct list_head link;
132 struct list_head valid_link;
137 unsigned int interval;
139 tdm_vblank_handler func;
141 tdm_private_vblank *private_vblank;
143 tdm_vblank_wait_type type;
146 unsigned int target_seq;
149 /* valid_vblank_list and valid_wait_list should be protected by valid_list_lock because
150 * tdm_vblank can be used in multi-thread.
152 static pthread_mutex_t valid_list_lock;
153 static struct list_head valid_vblank_list;
154 static struct list_head valid_wait_list;
155 static unsigned int vblank_list_inited;
156 static unsigned int vblank_global_fps;
157 static double stamp = 0;
159 static tdm_error _tdm_vblank_cb_vblank_SW(void *user_data);
160 static tdm_error _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info);
161 static void _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
162 unsigned int tv_sec, unsigned int tv_usec,
167 _print_list(struct list_head *list)
169 tdm_vblank_wait_info *w = NULL;
171 LIST_FOR_EACH_ENTRY(w, list, link) {
172 printf(" %d", w->interval);
179 _tdm_vblank_valid_list_add(struct list_head *valid_link, struct list_head *valid_list)
181 pthread_mutex_lock(&valid_list_lock);
182 LIST_ADDTAIL(valid_link, valid_list);
183 pthread_mutex_unlock(&valid_list_lock);
187 _tdm_vblank_valid_list_del(struct list_head *valid_link)
189 pthread_mutex_lock(&valid_list_lock);
190 LIST_DEL(valid_link);
191 pthread_mutex_unlock(&valid_list_lock);
194 static inline tdm_private_vblank*
195 _tdm_vblank_find(double vblank_stamp)
197 tdm_private_vblank *v = NULL;
202 pthread_mutex_lock(&valid_list_lock);
203 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
204 if (v->stamp == vblank_stamp) {
205 pthread_mutex_unlock(&valid_list_lock);
209 pthread_mutex_unlock(&valid_list_lock);
214 static inline unsigned int
215 _tdm_vblank_check_valid_wait(tdm_vblank_wait_info *wait_info)
217 tdm_vblank_wait_info *w = NULL;
222 pthread_mutex_lock(&valid_list_lock);
223 LIST_FOR_EACH_ENTRY(w, &valid_wait_list, valid_link) {
224 if (w == wait_info) {
225 pthread_mutex_unlock(&valid_list_lock);
229 pthread_mutex_unlock(&valid_list_lock);
234 static inline unsigned int
235 _tdm_vblank_find_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
237 tdm_vblank_wait_info *w = NULL;
242 LIST_FOR_EACH_ENTRY(w, list, link) {
243 if (w->stamp == wait_info->stamp)
251 _tdm_vblank_insert_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
253 tdm_vblank_wait_info *w = NULL;
254 tdm_vblank_wait_info *found = NULL;
256 if (LIST_IS_EMPTY(list)) {
257 LIST_ADDTAIL(&wait_info->link, list);
261 LIST_FOR_EACH_ENTRY(w, list, link) {
262 if (wait_info->type == VBLANK_TYPE_SW) {
263 if (wait_info->target_time == 0)
264 TDM_NEVER_GET_HERE();
265 if (w->target_time <= wait_info->target_time) {
270 if (w->interval <= wait_info->interval) {
278 LIST_ADD(&wait_info->link, &found->link);
280 LIST_ADDTAIL(&wait_info->link, list->next);
284 _tdm_vblank_change_to_SW(tdm_private_vblank *private_vblank)
286 tdm_vblank_wait_info *w = NULL, *ww = NULL;
288 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
291 tdm_display_lock(private_vblank->dpy);
292 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
293 tdm_display_unlock(private_vblank->dpy);
295 w->type = VBLANK_TYPE_SW_FAKE;
296 _tdm_vblank_wait_SW(w);
301 _tdm_vblank_free_HW_wait(tdm_private_vblank *private_vblank, tdm_error error, unsigned int call_cb)
303 tdm_vblank_wait_info *w = NULL, *ww = NULL;
305 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
307 _tdm_vblank_valid_list_del(&w->valid_link);
309 tdm_display_lock(private_vblank->dpy);
310 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
311 tdm_display_unlock(private_vblank->dpy);
313 if (call_cb && w->func)
314 w->func(private_vblank, error, 0, 0, 0, w->user_data);
321 _tdm_vblank_update_output_info(tdm_private_vblank *private_vblank)
323 tdm_output *output = private_vblank->output;
324 tdm_output_conn_status connection = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
325 unsigned int vrefresh = 0;
327 tdm_output_get_conn_status(output, &connection);
329 if (connection != TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
330 const tdm_output_mode *mode = NULL;
331 tdm_output_get_mode(output, &mode);
333 vrefresh = mode->vrefresh;
335 VWR("mode not setted!!!");
339 VWR("vrefresh can't be zero !!!");
340 vrefresh = TDM_VBLANK_DEFAULT_VREFRESH;
343 private_vblank->connection = connection;
344 private_vblank->vrefresh = vrefresh;
345 private_vblank->HW_vblank_gap = 1.0 / private_vblank->vrefresh;
347 if (private_vblank->fps_changeable)
348 private_vblank->fps = vrefresh;
350 VIN("connection(%d) vrefresh(%d) fps(%d) fps_changeable(%d)",
351 private_vblank->connection,
352 private_vblank->vrefresh, private_vblank->fps, private_vblank->fps_changeable);
356 _tdm_vblank_cb_output_change(tdm_output *output, tdm_output_change_type type,
357 tdm_value value, void *user_data)
359 tdm_private_vblank *private_vblank = user_data;
361 TDM_RETURN_IF_FAIL(private_vblank != NULL);
364 case TDM_OUTPUT_CHANGE_DPMS:
365 VIN("dpms %s", tdm_dpms_str(value.u32));
366 private_vblank->check_HW_or_SW = 1;
367 if (value.u32 != TDM_OUTPUT_DPMS_ON) {
368 if (private_vblank->enable_fake)
369 _tdm_vblank_change_to_SW(private_vblank);
371 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_DPMS_OFF, 1);
374 case TDM_OUTPUT_CHANGE_CONNECTION:
375 if (private_vblank->connection == value.u32)
377 VIN("output %s", tdm_status_str(value.u32));
378 _tdm_vblank_update_output_info(private_vblank);
379 private_vblank->check_HW_or_SW = 1;
380 if (private_vblank->connection == TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
381 if (private_vblank->enable_fake)
382 _tdm_vblank_change_to_SW(private_vblank);
384 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_OUTPUT_DISCONNECTED, 1);
393 tdm_vblank_set_client_vblank_fps(unsigned int pid, const char *name, unsigned int fps)
395 tdm_private_vblank *v = NULL;
397 TDM_RETURN_VAL_IF_FAIL(pid > 0, TDM_ERROR_INVALID_PARAMETER);
398 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
400 TDM_INFO("pid: %u, name: %s, fps: %d", pid, name, fps);
402 pthread_mutex_lock(&valid_list_lock);
403 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
404 struct wl_client *client;
405 pid_t client_pid = 0;
410 client = wl_resource_get_client(v->resource);
414 wl_client_get_credentials(client, &client_pid, NULL, NULL);
416 if (client_pid != pid)
419 if (name && strncmp(name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN)) {
420 if (strncmp(v->name, name, TDM_NAME_LEN))
424 tdm_vblank_set_fps(v, fps);
426 TDM_INFO("(pid:%u) '%s' fps changed: %d", pid, v->name, fps);
428 pthread_mutex_unlock(&valid_list_lock);
430 return TDM_ERROR_NONE;
434 tdm_vblank_enable_global_fps(unsigned int enable, unsigned int fps)
436 tdm_private_vblank *v = NULL;
439 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
441 TDM_INFO("global fps: %s fps(%d)", (enable) ? "enabled" : "disabled", fps);
443 pthread_mutex_lock(&valid_list_lock);
445 vblank_global_fps = (enable) ? fps : 0;
447 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
448 /* skip if vblank is created in server side */
452 v->check_HW_or_SW = 1;
454 pthread_mutex_unlock(&valid_list_lock);
456 return TDM_ERROR_NONE;
460 tdm_vblank_create(tdm_display *dpy, tdm_output *output, tdm_error *error)
462 tdm_private_vblank *private_vblank;
465 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(dpy != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
466 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(output != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
469 *error = TDM_ERROR_NONE;
471 if (!vblank_list_inited) {
472 if (pthread_mutex_init(&valid_list_lock, NULL)) {
473 TDM_ERR("mutex init failed: %m");
475 *error = TDM_ERROR_OPERATION_FAILED;
478 LIST_INITHEAD(&valid_vblank_list);
479 LIST_INITHEAD(&valid_wait_list);
480 vblank_list_inited = 1;
483 private_vblank = calloc(1, sizeof * private_vblank);
484 if (!private_vblank) {
486 *error = TDM_ERROR_OUT_OF_MEMORY;
491 tdm_output_add_change_handler(output, _tdm_vblank_cb_output_change, private_vblank);
493 private_vblank->stamp = ++stamp;
494 private_vblank->owner_tid = syscall(SYS_gettid);
495 private_vblank->dpy = dpy;
496 private_vblank->output = output;
497 private_vblank->check_HW_or_SW = 1;
498 private_vblank->fps_changeable = 1;
500 _tdm_vblank_update_output_info(private_vblank);
502 strncpy(private_vblank->name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN - 1);
503 private_vblank->name[TDM_NAME_LEN - 1] = '\0';
505 LIST_INITHEAD(&private_vblank->HW_wait_list);
506 LIST_INITHEAD(&private_vblank->SW_wait_list);
508 _tdm_vblank_valid_list_add(&private_vblank->valid_link, &valid_vblank_list);
510 VIN("created. vrefresh(%d) connection(%d)",
511 private_vblank->vrefresh, private_vblank->connection);
513 return (tdm_vblank *)private_vblank;
517 tdm_vblank_destroy(tdm_vblank *vblank)
519 tdm_private_vblank *private_vblank = vblank;
520 tdm_vblank_wait_info *w = NULL, *ww = NULL;
525 _tdm_vblank_valid_list_del(&private_vblank->valid_link);
527 if (private_vblank->SW_timer) {
528 tdm_display_lock(private_vblank->dpy);
529 tdm_event_loop_source_remove(private_vblank->SW_timer);
530 tdm_display_unlock(private_vblank->dpy);
533 tdm_output_remove_change_handler(private_vblank->output,
534 _tdm_vblank_cb_output_change, private_vblank);
536 _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
538 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
540 _tdm_vblank_valid_list_del(&w->valid_link);
546 free(private_vblank);
550 tdm_vblank_set_name(tdm_vblank *vblank, const char *name)
552 tdm_private_vblank *private_vblank = vblank;
554 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
557 name = TDM_VBLANK_DEFAULT_NAME;
559 strncpy(private_vblank->name, name, TDM_NAME_LEN - 1);
560 private_vblank->name[TDM_NAME_LEN - 1] = '\0';
562 VIN("name(%s)", name);
564 return TDM_ERROR_NONE;
568 tdm_vblank_get_name(tdm_vblank *vblank, const char **name)
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(name != NULL, TDM_ERROR_INVALID_PARAMETER);
575 *name = (const char*)private_vblank->name;
577 return TDM_ERROR_NONE;
581 tdm_vblank_set_fps(tdm_vblank *vblank, unsigned int fps)
583 tdm_private_vblank *private_vblank = vblank;
585 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
586 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
588 if (private_vblank->fps != fps || private_vblank->fps_changeable)
589 VIN("fps(%d) fps_changeable(0)", fps);
591 private_vblank->fps_changeable = 0;
593 if (private_vblank->fps == fps)
594 return TDM_ERROR_NONE;
596 private_vblank->fps = fps;
597 private_vblank->check_HW_or_SW = 1;
599 return TDM_ERROR_NONE;
603 tdm_vblank_get_fps(tdm_vblank *vblank, unsigned int *fps)
605 tdm_private_vblank *private_vblank = vblank;
607 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
608 TDM_RETURN_VAL_IF_FAIL(fps != NULL, TDM_ERROR_INVALID_PARAMETER);
610 *fps = private_vblank->fps;
612 return TDM_ERROR_NONE;
616 tdm_vblank_ignore_global_fps(tdm_vblank *vblank, unsigned int ignore)
618 tdm_private_vblank *private_vblank = vblank;
620 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
622 if (private_vblank->ignore_global_fps == ignore)
623 return TDM_ERROR_NONE;
625 private_vblank->ignore_global_fps = ignore;
626 private_vblank->check_HW_or_SW = 1;
628 VIN("ignore_global_fps(%d)", private_vblank->ignore_global_fps);
630 return TDM_ERROR_NONE;
634 tdm_vblank_set_offset(tdm_vblank *vblank, int offset)
636 tdm_private_vblank *private_vblank = vblank;
638 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
640 if (private_vblank->offset == offset)
641 return TDM_ERROR_NONE;
643 private_vblank->offset = offset;
644 private_vblank->check_HW_or_SW = 1;
646 VIN("offset(%d)", private_vblank->offset);
648 return TDM_ERROR_NONE;
652 tdm_vblank_get_offset(tdm_vblank *vblank, int *offset)
654 tdm_private_vblank *private_vblank = vblank;
656 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
657 TDM_RETURN_VAL_IF_FAIL(offset != NULL, TDM_ERROR_INVALID_PARAMETER);
659 *offset = private_vblank->offset;
661 return TDM_ERROR_NONE;
665 tdm_vblank_set_enable_fake(tdm_vblank *vblank, unsigned int enable_fake)
667 tdm_private_vblank *private_vblank = vblank;
669 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
671 if (private_vblank->enable_fake == enable_fake)
672 return TDM_ERROR_NONE;
674 private_vblank->enable_fake = enable_fake;
676 VIN("enable_fake(%d)", private_vblank->enable_fake);
678 return TDM_ERROR_NONE;
682 tdm_vblank_get_enable_fake(tdm_vblank *vblank, unsigned int *enable_fake)
684 tdm_private_vblank *private_vblank = vblank;
686 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
687 TDM_RETURN_VAL_IF_FAIL(enable_fake != NULL, TDM_ERROR_INVALID_PARAMETER);
689 *enable_fake = private_vblank->enable_fake;
691 return TDM_ERROR_NONE;
695 _tdm_vblank_sw_timer_update(tdm_private_vblank *private_vblank)
697 tdm_vblank_wait_info *first_wait_info = NULL;
702 if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
704 return TDM_ERROR_OPERATION_FAILED;
707 first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
708 curr = tdm_helper_get_time();
709 target = first_wait_info->target_time;
711 /* ms_delay should be more that 1 */
715 ms_delay = ceil((target - curr) * 1000.0);
721 VER("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
723 VDB("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
725 tdm_display_lock(private_vblank->dpy);
727 if (!private_vblank->SW_timer) {
728 private_vblank->SW_timer =
729 tdm_event_loop_add_timer_handler(private_vblank->dpy,
730 _tdm_vblank_cb_vblank_SW,
733 if (!private_vblank->SW_timer) {
734 tdm_display_unlock(private_vblank->dpy);
735 VER("couldn't add timer");
738 VIN("Create SW timer");
741 ret = tdm_event_loop_source_timer_update(private_vblank->SW_timer, ms_delay);
742 if (ret != TDM_ERROR_NONE) {
743 tdm_display_unlock(private_vblank->dpy);
744 VER("couldn't update timer");
748 tdm_display_unlock(private_vblank->dpy);
750 return TDM_ERROR_NONE;
754 _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
755 unsigned int tv_sec, unsigned int tv_usec,
758 tdm_vblank_wait_info *wait_info = user_data;
759 tdm_private_vblank *private_vblank;
761 if (!_tdm_vblank_check_valid_wait(wait_info)) {
762 TDM_DBG("can't find wait(%p) from valid_wait_list", wait_info);
766 private_vblank = wait_info->private_vblank;
767 TDM_RETURN_IF_FAIL(private_vblank != NULL);
769 if (!_tdm_vblank_find_wait(wait_info, &private_vblank->HW_wait_list)) {
770 VDB("can't find wait(%p)", wait_info);
774 if (wait_info->type == VBLANK_TYPE_HW_SW) {
777 LIST_DEL(&wait_info->link);
779 /* kernel sends the wrong time of first vblank event. and the time of
780 * second vblank is correct.
782 wait_info->target_time = TDM_TIME(tv_sec, tv_usec);
783 wait_info->target_time += (((double)private_vblank->offset) / 1000.0);
785 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
787 ret = _tdm_vblank_sw_timer_update(private_vblank);
789 /* wait_info will be freed in _tdm_vblank_cb_vblank_SW() */
790 if (ret == TDM_ERROR_NONE) {
791 VDB("wait(%p) SW timer", wait_info);
795 VWR("couldn't update sw timer");
798 LIST_DEL(&wait_info->link);
799 _tdm_vblank_valid_list_del(&wait_info->valid_link);
801 /* tv_sec & tv_usec shouldn't be zero. But sometimes they are zero in some hardware.
802 * We need to prohibit that last_time becomes zero because "last_time == 0" means
803 * that a tdm_vblank object is just created and doesn't have the first vblank event.
804 * If last_time becomes 0, it would make issue.
806 if (tv_sec == 0 && tv_usec == 0) {
807 double curr = tdm_helper_get_time();
808 tv_sec = TDM_TIME_SEC(curr);
809 tv_usec = TDM_TIME_USEC(curr);
812 private_vblank->last_seq = wait_info->target_seq;
813 private_vblank->last_time = TDM_TIME(tv_sec, tv_usec);
815 VDB("wait(%p) last(%.6f) sequence(%u) done", wait_info, private_vblank->last_time, wait_info->target_seq);
818 wait_info->func(private_vblank, TDM_ERROR_NONE, wait_info->target_seq,
819 tv_sec, tv_usec, wait_info->user_data);
825 _tdm_vblank_wait_HW(tdm_vblank_wait_info *wait_info)
827 tdm_private_vblank *private_vblank = wait_info->private_vblank;
831 if (private_vblank->last_type != VBLANK_EVENT_TYPE_HW) {
832 VIN("Use HW vblank");
833 private_vblank->last_type = VBLANK_EVENT_TYPE_HW;
836 _tdm_vblank_insert_wait(wait_info, &private_vblank->HW_wait_list);
838 hw_interval = wait_info->interval * private_vblank->quotient;
840 if (private_vblank->last_time == 0) {
841 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
842 private_vblank->last_seq = 0;
843 private_vblank->last_time = tdm_helper_get_time();
845 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
846 wait_info->target_seq = 1;
848 VDB("wait(%p) last(%.6f) hw_itvl(%d) targ_seq(%u)",
849 wait_info, private_vblank->last_time, hw_interval, wait_info->target_seq);
851 double last, prev, req, curr, target;
854 last = private_vblank->last_time;
855 req = wait_info->req_time;
857 /* make sure that req time is bigger than last. */
861 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
862 prev = last + private_vblank->vblank_gap * skip;
864 curr = tdm_helper_get_time();
866 while (target < curr)
867 target += (private_vblank->vblank_gap * wait_info->interval);
869 hw_interval = (unsigned int)((target - curr) / private_vblank->HW_vblank_gap + TDM_TIME_MARGIN) + 1;
871 wait_info->target_seq = private_vblank->last_seq;
872 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
874 if (hw_interval > 300)
875 VER("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
876 wait_info, last, req - last, prev - last, curr - last, target, target - last,
877 skip, hw_interval, wait_info->target_seq);
879 VDB("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
880 wait_info, last, req - last, prev - last, curr - last, target, target - last,
881 skip, hw_interval, wait_info->target_seq);
884 if (private_vblank->add_front)
885 ret = tdm_output_wait_vblank_add_front(private_vblank->output, hw_interval, 0,
886 _tdm_vblank_cb_vblank_HW, wait_info);
888 ret = tdm_output_wait_vblank(private_vblank->output, hw_interval, 0,
889 _tdm_vblank_cb_vblank_HW, wait_info);
891 if (ret != TDM_ERROR_NONE) {
892 LIST_DEL(&wait_info->link);
896 VDB("wait(%p) waiting", wait_info);
898 return TDM_ERROR_NONE;
902 _tdm_vblank_cb_vblank_SW(void *user_data)
904 tdm_private_vblank *private_vblank = user_data;
906 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_OPERATION_FAILED);
908 return tdm_vblank_cb_vblank_SW(private_vblank, 0);
912 tdm_vblank_cb_vblank_SW(tdm_vblank *vblank, double vblank_stamp)
914 tdm_private_vblank *private_vblank;
915 tdm_vblank_wait_info *first_wait_info = NULL, *w = NULL, *ww = NULL;
917 TDM_RETURN_VAL_IF_FAIL(vblank || vblank_stamp > 0, TDM_ERROR_INVALID_PARAMETER);
920 private_vblank = vblank;
922 private_vblank = _tdm_vblank_find(vblank_stamp);
923 if (!private_vblank) {
924 TDM_DBG("can't find vblank(%.0f) from valid_list", vblank_stamp);
925 return TDM_ERROR_NONE;
929 if (private_vblank->owner_tid != syscall(SYS_gettid)) {
930 tdm_thread_cb_vblank_sw vblank_sw;
931 tdm_private_display *private_display = private_vblank->dpy;
934 vblank_sw.base.type = TDM_THREAD_CB_VBLANK_SW;
935 vblank_sw.base.length = sizeof vblank_sw;
936 vblank_sw.vblank_stamp = private_vblank->stamp;
938 ret = tdm_thread_send_cb(private_display->private_loop, &vblank_sw.base);
939 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
941 return TDM_ERROR_NONE;
944 if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
946 return TDM_ERROR_OPERATION_FAILED;
949 first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
950 TDM_RETURN_VAL_IF_FAIL(first_wait_info != NULL, TDM_ERROR_OPERATION_FAILED);
952 if (private_vblank->last_seq >= first_wait_info->target_seq)
953 TDM_ERR("last_seq(%u) target_seq(%u)", private_vblank->last_seq, first_wait_info->target_seq);
955 private_vblank->last_seq = first_wait_info->target_seq;
956 private_vblank->last_time = first_wait_info->target_time;
958 VDB("wait(%p) last(%.6f) sequence(%u) done", first_wait_info, private_vblank->last_time, first_wait_info->target_seq);
960 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
961 if (w->target_time != first_wait_info->target_time)
965 _tdm_vblank_valid_list_del(&w->valid_link);
968 tdm_display_unlock(private_vblank->dpy);
969 w->func(private_vblank, TDM_ERROR_NONE, w->target_seq,
970 TDM_TIME_SEC(w->target_time), TDM_TIME_USEC(w->target_time),
972 tdm_display_lock(private_vblank->dpy);
978 return TDM_ERROR_NONE;
982 _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info)
984 tdm_private_vblank *private_vblank = wait_info->private_vblank;
987 if (private_vblank->last_type != VBLANK_EVENT_TYPE_SW) {
988 VIN("Use SW vblank");
989 private_vblank->last_type = VBLANK_EVENT_TYPE_SW;
992 if (private_vblank->last_time == 0) {
993 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
994 private_vblank->last_seq = 0;
995 private_vblank->last_time = tdm_helper_get_time();
997 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
998 wait_info->target_seq = 1;
999 wait_info->target_time = private_vblank->last_time + 0.001;
1001 VDB("wait(%p) last(%.6f) target(%.6f) target sequence(%u)",
1002 wait_info, private_vblank->last_time, wait_info->target_time, wait_info->target_seq);
1004 double last, prev, req, curr, target;
1007 last = private_vblank->last_time;
1008 req = wait_info->req_time;
1010 /* make sure that req time is bigger than last. */
1014 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1015 prev = last + private_vblank->vblank_gap * skip;
1017 curr = tdm_helper_get_time();
1018 target = prev + private_vblank->vblank_gap * wait_info->interval;
1020 while (target < curr)
1021 target += private_vblank->vblank_gap;
1023 wait_info->target_seq = private_vblank->last_seq;
1024 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1026 wait_info->target_time = target;
1028 VDB("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) targ_seq(%u)",
1029 wait_info, last, req - last, prev - last, curr - last,
1030 target, target - last, skip, wait_info->target_seq);
1033 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
1035 ret = _tdm_vblank_sw_timer_update(private_vblank);
1036 if (ret != TDM_ERROR_NONE) {
1037 LIST_DEL(&wait_info->link);
1038 VER("couldn't update sw timer");
1042 return TDM_ERROR_NONE;
1046 tdm_vblank_wait(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1047 unsigned int interval, tdm_vblank_handler func, void *user_data)
1049 tdm_private_vblank *private_vblank = vblank;
1050 tdm_vblank_wait_info *wait_info;
1051 tdm_output_dpms dpms = TDM_OUTPUT_DPMS_OFF;
1055 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1056 TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1058 if (private_vblank->owner_tid != syscall(SYS_gettid)) {
1059 TDM_ERR("SHOULD be called in the owner thread(%d)", (int)private_vblank->owner_tid);
1060 return TDM_ERROR_BAD_REQUEST;
1063 tdm_output_get_dpms(private_vblank->output, &dpms);
1065 if (!private_vblank->enable_fake) {
1066 if (private_vblank->connection == TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
1067 VER("can't wait a vblank: output disconnected");
1068 return TDM_ERROR_OUTPUT_DISCONNECTED;
1070 if (dpms != TDM_OUTPUT_DPMS_ON) {
1071 VER("can't wait a vblank: DPMS off");
1072 return TDM_ERROR_DPMS_OFF;
1076 wait_info = calloc(1, sizeof * wait_info);
1078 VER("alloc failed");
1079 return TDM_ERROR_OUT_OF_MEMORY;
1082 /* set request time to current time if 0. This function seems to be called in server side. */
1083 if (req_sec == 0 && req_usec == 0) {
1084 double curr = tdm_helper_get_time();
1085 req_sec = TDM_TIME_SEC(curr);
1086 req_usec = TDM_TIME_USEC(curr);
1089 LIST_INITHEAD(&wait_info->link);
1091 _tdm_vblank_valid_list_add(&wait_info->valid_link, &valid_wait_list);
1093 wait_info->stamp = ++stamp;
1094 wait_info->req_time = TDM_TIME(req_sec, req_usec);
1095 wait_info->interval = interval;
1096 wait_info->func = func;
1097 wait_info->user_data = user_data;
1098 wait_info->private_vblank = private_vblank;
1100 if (private_vblank->ignore_global_fps ||
1101 vblank_global_fps == 0 ||
1102 private_vblank->fps < vblank_global_fps)
1103 fps = private_vblank->fps;
1105 fps = vblank_global_fps;
1107 if (private_vblank->check_HW_or_SW) {
1108 private_vblank->check_HW_or_SW = 0;
1109 private_vblank->vblank_gap = 1.0 / fps;
1110 private_vblank->quotient = private_vblank->vrefresh / fps;
1113 /* 1) if fps != factor of vrefresh, SW timer
1114 * 2) if fps == factor of vrefresh && dpms == off, SW timer (Fake HW vblank)
1115 * 2) if fps == factor of vrefresh && dpms == on && offset == 0, HW vblank
1116 * 3) if fps == factor of vrefresh && dpms == on && offset != 0, HW vblank + SW timer
1117 * In case of 1), we really don't need to align with HW vblank.
1119 if (private_vblank->vrefresh % fps)
1120 wait_info->type = VBLANK_TYPE_SW;
1121 else if (dpms == TDM_OUTPUT_DPMS_OFF ||
1122 private_vblank->connection == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
1123 wait_info->type = VBLANK_TYPE_SW_FAKE;
1124 else if (private_vblank->offset == 0)
1125 wait_info->type = VBLANK_TYPE_HW;
1127 wait_info->type = VBLANK_TYPE_HW_SW;
1129 if (wait_info->type == VBLANK_TYPE_SW || wait_info->type == VBLANK_TYPE_SW_FAKE)
1130 ret = _tdm_vblank_wait_SW(wait_info);
1132 ret = _tdm_vblank_wait_HW(wait_info);
1133 if (ret == TDM_ERROR_OUTPUT_DISCONNECTED || ret == TDM_ERROR_DPMS_OFF)
1134 ret = _tdm_vblank_wait_SW(wait_info);
1137 if (ret != TDM_ERROR_NONE) {
1138 LIST_DEL(&wait_info->link);
1139 _tdm_vblank_valid_list_del(&wait_info->valid_link);
1141 tdm_display_lock(private_vblank->dpy);
1142 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, wait_info);
1143 tdm_display_unlock(private_vblank->dpy);
1149 return TDM_ERROR_NONE;
1153 tdm_vblank_wait_seq(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1154 unsigned int sequence, tdm_vblank_handler func, void *user_data)
1156 tdm_private_vblank *private_vblank = vblank;
1157 unsigned int interval;
1159 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1160 TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1162 /* if the sequence of vblank reaches the max value, sequence can be 0. */
1164 if (private_vblank->last_seq == 0) {
1165 TDM_WRN("can't calculate interval with sequence(%u)", sequence);
1167 } else if (sequence > private_vblank->last_seq ||
1168 TDM_VBLANK_SEQ_REACHED_MAX(sequence, private_vblank->last_seq)) {
1169 double last, curr, seq_target;
1171 last = private_vblank->last_time;
1172 curr = tdm_helper_get_time();
1173 seq_target = last + private_vblank->vblank_gap * (sequence - private_vblank->last_seq);
1175 /* If target is old or too close(1ms) to current, we call the handler immediately.
1176 * 2ms? it seems too much.
1178 if (seq_target < curr) {
1179 func(vblank, TDM_ERROR_NONE, sequence,
1180 TDM_TIME_SEC(seq_target), TDM_TIME_USEC(seq_target),
1182 return TDM_ERROR_NONE;
1183 } else if ((seq_target - curr) < 0.001) { /* 1ms */
1184 func(vblank, TDM_ERROR_NONE, sequence,
1185 TDM_TIME_SEC(curr), TDM_TIME_USEC(curr),
1187 return TDM_ERROR_NONE;
1190 interval = (unsigned int)((seq_target - curr) / private_vblank->vblank_gap + TDM_TIME_MARGIN) + 1;
1192 /* this seems error. But we handle this like normal to avoid the unexpected error in cliend side */
1193 TDM_WRN("sequence(%u) should be over the last sequence(%u)", sequence, private_vblank->last_seq);
1194 func(vblank, TDM_ERROR_NONE, private_vblank->last_seq,
1195 TDM_TIME_SEC(private_vblank->last_time), TDM_TIME_USEC(private_vblank->last_time),
1197 return TDM_ERROR_NONE;
1200 return tdm_vblank_wait(vblank, req_sec, req_usec, interval, func, user_data);
1204 tdm_vblank_set_add_front(tdm_vblank *vblank, unsigned int add_front)
1206 tdm_private_vblank *private_vblank = vblank;
1208 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1210 TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
1212 if (private_vblank->add_front == add_front)
1213 return TDM_ERROR_NONE;
1215 private_vblank->add_front = add_front;
1217 return TDM_ERROR_NONE;
1221 tdm_vblank_set_resource(tdm_vblank *vblank, struct wl_resource *resource)
1223 tdm_private_vblank *private_vblank = vblank;
1225 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1226 TDM_RETURN_VAL_IF_FAIL(private_vblank->resource == NULL, TDM_ERROR_OPERATION_FAILED);
1228 private_vblank->resource = resource;
1230 return TDM_ERROR_NONE;
1234 tdm_vblank_get_vblank_list_information(tdm_display *dpy, char *reply, int *len)
1236 tdm_private_vblank *v = NULL;
1238 TDM_SNPRINTF(reply, len, "[Client Vblank List]\n");
1239 TDM_SNPRINTF(reply, len, "* global fps: %u\n", vblank_global_fps);
1240 TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1241 TDM_SNPRINTF(reply, len, "name fps ignore offset fake process\n");
1242 TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1244 pthread_mutex_lock(&valid_list_lock);
1245 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
1246 const char *proc_name = NULL;
1250 struct wl_client *client = wl_resource_get_client(v->resource);
1252 wl_client_get_credentials(client, &pid, NULL, NULL);
1253 proc_name = tdm_server_get_client_name(pid);
1257 TDM_SNPRINTF(reply, len, "%-12s %u %u %d %u %s (pid: %u)\n",
1258 v->name, v->fps, v->ignore_global_fps, v->offset, v->enable_fake,
1259 (proc_name) ? proc_name : "Unknown", pid);
1261 pthread_mutex_unlock(&valid_list_lock);
1263 TDM_SNPRINTF(reply, len, "\n");