103 static bool snd_rawmidi_ready(struct snd_rawmidi_substream *substream)  in snd_rawmidi_ready()  argument
105 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready()
115 static inline int snd_rawmidi_ready_append(struct snd_rawmidi_substream *substream,  in snd_rawmidi_ready_append()  argument
118 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready_append()
121 	       (!substream->append || runtime->avail >= count);  in snd_rawmidi_ready_append()
130 		runtime->event(runtime->substream);  in snd_rawmidi_input_event_work()
144 static int snd_rawmidi_runtime_create(struct snd_rawmidi_substream *substream)  in snd_rawmidi_runtime_create()  argument
151 	runtime->substream = substream;  in snd_rawmidi_runtime_create()
158 	if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)  in snd_rawmidi_runtime_create()
168 	substream->runtime = runtime;  in snd_rawmidi_runtime_create()
172 static int snd_rawmidi_runtime_free(struct snd_rawmidi_substream *substream)  in snd_rawmidi_runtime_free()  argument
174 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_runtime_free()
178 	substream->runtime = NULL;  in snd_rawmidi_runtime_free()
182 static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *substream, int up)  in snd_rawmidi_output_trigger()  argument
184 	if (!substream->opened)  in snd_rawmidi_output_trigger()
186 	substream->ops->trigger(substream, up);  in snd_rawmidi_output_trigger()
189 static void snd_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)  in snd_rawmidi_input_trigger()  argument
191 	if (!substream->opened)  in snd_rawmidi_input_trigger()
193 	substream->ops->trigger(substream, up);  in snd_rawmidi_input_trigger()
195 		cancel_work_sync(&substream->runtime->event_work);  in snd_rawmidi_input_trigger()
216 int snd_rawmidi_drop_output(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drop_output()  argument
218 	snd_rawmidi_output_trigger(substream, 0);  in snd_rawmidi_drop_output()
219 	reset_runtime_ptrs(substream->runtime, false);  in snd_rawmidi_drop_output()
224 int snd_rawmidi_drain_output(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drain_output()  argument
228 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_drain_output()
238 		rmidi_warn(substream->rmidi,  in snd_rawmidi_drain_output()
246 		if (substream->ops->drain)  in snd_rawmidi_drain_output()
247 			substream->ops->drain(substream);  in snd_rawmidi_drain_output()
250 		snd_rawmidi_drop_output(substream);  in snd_rawmidi_drain_output()
256 int snd_rawmidi_drain_input(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drain_input()  argument
258 	snd_rawmidi_input_trigger(substream, 0);  in snd_rawmidi_drain_input()
259 	reset_runtime_ptrs(substream->runtime, true);  in snd_rawmidi_drain_input()
271 	struct snd_rawmidi_substream *substream;  in assign_substream()  local
283 	list_for_each_entry(substream, &s->substreams, list) {  in assign_substream()
284 		if (substream->opened) {  in assign_substream()
287 			    !substream->append)  in assign_substream()
290 		if (subdevice < 0 || subdevice == substream->number) {  in assign_substream()
291 			*sub_ret = substream;  in assign_substream()
300 			  struct snd_rawmidi_substream *substream,  in open_substream()  argument
305 	if (substream->use_count == 0) {  in open_substream()
306 		err = snd_rawmidi_runtime_create(substream);  in open_substream()
309 		err = substream->ops->open(substream);  in open_substream()
311 			snd_rawmidi_runtime_free(substream);  in open_substream()
314 		substream->opened = 1;  in open_substream()
315 		substream->active_sensing = 0;  in open_substream()
317 			substream->append = 1;  in open_substream()
318 		substream->pid = get_pid(task_pid(current));  in open_substream()
319 		rmidi->streams[substream->stream].substream_opened++;  in open_substream()
321 	substream->use_count++;  in open_substream()
326 			    struct snd_rawmidi_substream *substream,
503 			    struct snd_rawmidi_substream *substream,  in close_substream()  argument
506 	if (--substream->use_count)  in close_substream()
510 		if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)  in close_substream()
511 			snd_rawmidi_input_trigger(substream, 0);  in close_substream()
513 			if (substream->active_sensing) {  in close_substream()
518 				snd_rawmidi_kernel_write(substream, &buf, 1);  in close_substream()
520 			if (snd_rawmidi_drain_output(substream) == -ERESTARTSYS)  in close_substream()
521 				snd_rawmidi_output_trigger(substream, 0);  in close_substream()
524 	substream->ops->close(substream);  in close_substream()
525 	if (substream->runtime->private_free)  in close_substream()
526 		substream->runtime->private_free(substream);  in close_substream()
527 	snd_rawmidi_runtime_free(substream);  in close_substream()
528 	substream->opened = 0;  in close_substream()
529 	substream->append = 0;  in close_substream()
530 	put_pid(substream->pid);  in close_substream()
531 	substream->pid = NULL;  in close_substream()
532 	rmidi->streams[substream->stream].substream_opened--;  in close_substream()
585 static int snd_rawmidi_info(struct snd_rawmidi_substream *substream,  in snd_rawmidi_info()  argument
590 	if (substream == NULL)  in snd_rawmidi_info()
592 	rmidi = substream->rmidi;  in snd_rawmidi_info()
596 	info->subdevice = substream->number;  in snd_rawmidi_info()
597 	info->stream = substream->stream;  in snd_rawmidi_info()
601 	strcpy(info->subname, substream->name);  in snd_rawmidi_info()
602 	info->subdevices_count = substream->pstr->substream_count;  in snd_rawmidi_info()
603 	info->subdevices_avail = (substream->pstr->substream_count -  in snd_rawmidi_info()
604 				  substream->pstr->substream_opened);  in snd_rawmidi_info()
608 static int snd_rawmidi_info_user(struct snd_rawmidi_substream *substream,  in snd_rawmidi_info_user()  argument
614 	err = snd_rawmidi_info(substream, &info);  in snd_rawmidi_info_user()
627 	struct snd_rawmidi_substream *substream;  in __snd_rawmidi_info_select()  local
640 	list_for_each_entry(substream, &pstr->substreams, list) {  in __snd_rawmidi_info_select()
641 		if ((unsigned int)substream->number == info->subdevice)  in __snd_rawmidi_info_select()
642 			return snd_rawmidi_info(substream, info);  in __snd_rawmidi_info_select()
712 int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream,  in snd_rawmidi_output_params()  argument
715 	if (substream->append && substream->use_count > 1)  in snd_rawmidi_output_params()
717 	snd_rawmidi_drain_output(substream);  in snd_rawmidi_output_params()
718 	substream->active_sensing = !params->no_active_sensing;  in snd_rawmidi_output_params()
719 	return resize_runtime_buffer(substream->runtime, params, false);  in snd_rawmidi_output_params()
723 int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream,  in snd_rawmidi_input_params()  argument
736 	snd_rawmidi_drain_input(substream);  in snd_rawmidi_input_params()
737 	err = resize_runtime_buffer(substream->runtime, params, true);  in snd_rawmidi_input_params()
741 	substream->framing = framing;  in snd_rawmidi_input_params()
742 	substream->clock_type = clock_type;  in snd_rawmidi_input_params()
747 static int snd_rawmidi_output_status(struct snd_rawmidi_substream *substream,  in snd_rawmidi_output_status()  argument
750 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_output_status()
760 static int snd_rawmidi_input_status(struct snd_rawmidi_substream *substream,  in snd_rawmidi_input_status()  argument
763 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_input_status()
994 static int receive_with_tstamp_framing(struct snd_rawmidi_substream *substream,  in receive_with_tstamp_framing()  argument
997 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in receive_with_tstamp_framing()
1032 static struct timespec64 get_framing_tstamp(struct snd_rawmidi_substream *substream)  in get_framing_tstamp()  argument
1036 	switch (substream->clock_type) {  in get_framing_tstamp()
1060 int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,  in snd_rawmidi_receive()  argument
1064 	struct timespec64 ts64 = get_framing_tstamp(substream);  in snd_rawmidi_receive()
1066 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_receive()
1068 	if (!substream->opened)  in snd_rawmidi_receive()
1071 		rmidi_dbg(substream->rmidi,  in snd_rawmidi_receive()
1077 	if (substream->framing == SNDRV_RAWMIDI_MODE_FRAMING_TSTAMP) {  in snd_rawmidi_receive()
1078 		result = receive_with_tstamp_framing(substream, buffer, count, &ts64);  in snd_rawmidi_receive()
1080 		substream->bytes++;  in snd_rawmidi_receive()
1090 		substream->bytes += count;  in snd_rawmidi_receive()
1128 static long snd_rawmidi_kernel_read1(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_read1()  argument
1134 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_read1()
1173 long snd_rawmidi_kernel_read(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_read()  argument
1176 	snd_rawmidi_input_trigger(substream, 1);  in snd_rawmidi_kernel_read()
1177 	return snd_rawmidi_kernel_read1(substream, NULL/*userbuf*/, buf, count);  in snd_rawmidi_kernel_read()
1187 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_read()  local
1191 	substream = rfile->input;  in snd_rawmidi_read()
1192 	if (substream == NULL)  in snd_rawmidi_read()
1194 	runtime = substream->runtime;  in snd_rawmidi_read()
1195 	snd_rawmidi_input_trigger(substream, 1);  in snd_rawmidi_read()
1223 		count1 = snd_rawmidi_kernel_read1(substream,  in snd_rawmidi_read()
1242 int snd_rawmidi_transmit_empty(struct snd_rawmidi_substream *substream)  in snd_rawmidi_transmit_empty()  argument
1244 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_empty()
1249 		rmidi_dbg(substream->rmidi,  in snd_rawmidi_transmit_empty()
1268 int __snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,  in __snd_rawmidi_transmit_peek()  argument
1272 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in __snd_rawmidi_transmit_peek()
1275 		rmidi_dbg(substream->rmidi,  in __snd_rawmidi_transmit_peek()
1322 int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,  in snd_rawmidi_transmit_peek()  argument
1325 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_peek()
1330 	result = __snd_rawmidi_transmit_peek(substream, buffer, count);  in snd_rawmidi_transmit_peek()
1343 int __snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)  in __snd_rawmidi_transmit_ack()  argument
1345 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in __snd_rawmidi_transmit_ack()
1348 		rmidi_dbg(substream->rmidi,  in __snd_rawmidi_transmit_ack()
1356 	substream->bytes += count;  in __snd_rawmidi_transmit_ack()
1376 int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)  in snd_rawmidi_transmit_ack()  argument
1378 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_ack()
1383 	result = __snd_rawmidi_transmit_ack(substream, count);  in snd_rawmidi_transmit_ack()
1399 int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream,  in snd_rawmidi_transmit()  argument
1402 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit()
1407 	if (!substream->opened)  in snd_rawmidi_transmit()
1410 		count = __snd_rawmidi_transmit_peek(substream, buffer, count);  in snd_rawmidi_transmit()
1414 			result = __snd_rawmidi_transmit_ack(substream, count);  in snd_rawmidi_transmit()
1427 int snd_rawmidi_proceed(struct snd_rawmidi_substream *substream)  in snd_rawmidi_proceed()  argument
1429 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_proceed()
1436 		__snd_rawmidi_transmit_ack(substream, count);  in snd_rawmidi_proceed()
1443 static long snd_rawmidi_kernel_write1(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_write1()  argument
1450 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_write1()
1460 	if (substream->append) {  in snd_rawmidi_kernel_write1()
1501 		snd_rawmidi_output_trigger(substream, 1);  in snd_rawmidi_kernel_write1()
1505 long snd_rawmidi_kernel_write(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_write()  argument
1508 	return snd_rawmidi_kernel_write1(substream, NULL, buf, count);  in snd_rawmidi_kernel_write()
1519 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_write()  local
1522 	substream = rfile->output;  in snd_rawmidi_write()
1523 	runtime = substream->runtime;  in snd_rawmidi_write()
1525 	if (substream->append && count > runtime->buffer_size)  in snd_rawmidi_write()
1530 		while (!snd_rawmidi_ready_append(substream, count)) {  in snd_rawmidi_write()
1554 		count1 = snd_rawmidi_kernel_write1(substream, buf, NULL, count);  in snd_rawmidi_write()
1629 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_proc_info_read()  local
1639 		list_for_each_entry(substream,  in snd_rawmidi_proc_info_read()
1645 				    substream->number,  in snd_rawmidi_proc_info_read()
1646 				    (unsigned long) substream->bytes);  in snd_rawmidi_proc_info_read()
1647 			if (substream->opened) {  in snd_rawmidi_proc_info_read()
1650 				    pid_vnr(substream->pid));  in snd_rawmidi_proc_info_read()
1651 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1666 		list_for_each_entry(substream,  in snd_rawmidi_proc_info_read()
1672 				    substream->number,  in snd_rawmidi_proc_info_read()
1673 				    (unsigned long) substream->bytes);  in snd_rawmidi_proc_info_read()
1674 			if (substream->opened) {  in snd_rawmidi_proc_info_read()
1677 					    pid_vnr(substream->pid));  in snd_rawmidi_proc_info_read()
1678 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1689 				if (substream->framing == SNDRV_RAWMIDI_MODE_FRAMING_TSTAMP) {  in snd_rawmidi_proc_info_read()
1690 					clock_type = substream->clock_type >> SNDRV_RAWMIDI_MODE_CLOCK_SHIFT;  in snd_rawmidi_proc_info_read()
1724 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_alloc_substreams()  local
1728 		substream = kzalloc(sizeof(*substream), GFP_KERNEL);  in snd_rawmidi_alloc_substreams()
1729 		if (!substream)  in snd_rawmidi_alloc_substreams()
1731 		substream->stream = direction;  in snd_rawmidi_alloc_substreams()
1732 		substream->number = idx;  in snd_rawmidi_alloc_substreams()
1733 		substream->rmidi = rmidi;  in snd_rawmidi_alloc_substreams()
1734 		substream->pstr = stream;  in snd_rawmidi_alloc_substreams()
1735 		list_add_tail(&substream->list, &stream->substreams);  in snd_rawmidi_alloc_substreams()
1821 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_free_substreams()  local
1824 		substream = list_entry(stream->substreams.next, struct snd_rawmidi_substream, list);  in snd_rawmidi_free_substreams()
1825 		list_del(&substream->list);  in snd_rawmidi_free_substreams()
1826 		kfree(substream);  in snd_rawmidi_free_substreams()
2005 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_set_ops()  local
2007 	list_for_each_entry(substream, &rmidi->streams[stream].substreams, list)  in snd_rawmidi_set_ops()
2008 		substream->ops = ops;  in snd_rawmidi_set_ops()