88 static inline int snd_rawmidi_ready(struct snd_rawmidi_substream *substream)  in snd_rawmidi_ready()  argument
90 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready()
94 static inline int snd_rawmidi_ready_append(struct snd_rawmidi_substream *substream,  in snd_rawmidi_ready_append()  argument
97 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready_append()
99 	       (!substream->append || runtime->avail >= count);  in snd_rawmidi_ready_append()
107 		runtime->event(runtime->substream);  in snd_rawmidi_input_event_work()
110 static int snd_rawmidi_runtime_create(struct snd_rawmidi_substream *substream)  in snd_rawmidi_runtime_create()  argument
116 	runtime->substream = substream;  in snd_rawmidi_runtime_create()
123 	if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)  in snd_rawmidi_runtime_create()
132 	substream->runtime = runtime;  in snd_rawmidi_runtime_create()
136 static int snd_rawmidi_runtime_free(struct snd_rawmidi_substream *substream)  in snd_rawmidi_runtime_free()  argument
138 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_runtime_free()
142 	substream->runtime = NULL;  in snd_rawmidi_runtime_free()
146 static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,int up)  in snd_rawmidi_output_trigger()  argument
148 	if (!substream->opened)  in snd_rawmidi_output_trigger()
150 	substream->ops->trigger(substream, up);  in snd_rawmidi_output_trigger()
153 static void snd_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)  in snd_rawmidi_input_trigger()  argument
155 	if (!substream->opened)  in snd_rawmidi_input_trigger()
157 	substream->ops->trigger(substream, up);  in snd_rawmidi_input_trigger()
159 		cancel_work_sync(&substream->runtime->event_work);  in snd_rawmidi_input_trigger()
162 int snd_rawmidi_drop_output(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drop_output()  argument
165 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_drop_output()
167 	snd_rawmidi_output_trigger(substream, 0);  in snd_rawmidi_drop_output()
177 int snd_rawmidi_drain_output(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drain_output()  argument
181 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_drain_output()
191 		rmidi_warn(substream->rmidi,  in snd_rawmidi_drain_output()
199 		if (substream->ops->drain)  in snd_rawmidi_drain_output()
200 			substream->ops->drain(substream);  in snd_rawmidi_drain_output()
203 		snd_rawmidi_drop_output(substream);  in snd_rawmidi_drain_output()
209 int snd_rawmidi_drain_input(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drain_input()  argument
212 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_drain_input()
214 	snd_rawmidi_input_trigger(substream, 0);  in snd_rawmidi_drain_input()
231 	struct snd_rawmidi_substream *substream;  in assign_substream()  local
243 	list_for_each_entry(substream, &s->substreams, list) {  in assign_substream()
244 		if (substream->opened) {  in assign_substream()
247 			    !substream->append)  in assign_substream()
250 		if (subdevice < 0 || subdevice == substream->number) {  in assign_substream()
251 			*sub_ret = substream;  in assign_substream()
260 			  struct snd_rawmidi_substream *substream,  in open_substream()  argument
265 	if (substream->use_count == 0) {  in open_substream()
266 		err = snd_rawmidi_runtime_create(substream);  in open_substream()
269 		err = substream->ops->open(substream);  in open_substream()
271 			snd_rawmidi_runtime_free(substream);  in open_substream()
274 		substream->opened = 1;  in open_substream()
275 		substream->active_sensing = 0;  in open_substream()
277 			substream->append = 1;  in open_substream()
278 		substream->pid = get_pid(task_pid(current));  in open_substream()
279 		rmidi->streams[substream->stream].substream_opened++;  in open_substream()
281 	substream->use_count++;  in open_substream()
286 			    struct snd_rawmidi_substream *substream,
465 			    struct snd_rawmidi_substream *substream,  in close_substream()  argument
468 	if (--substream->use_count)  in close_substream()
472 		if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)  in close_substream()
473 			snd_rawmidi_input_trigger(substream, 0);  in close_substream()
475 			if (substream->active_sensing) {  in close_substream()
480 				snd_rawmidi_kernel_write(substream, &buf, 1);  in close_substream()
482 			if (snd_rawmidi_drain_output(substream) == -ERESTARTSYS)  in close_substream()
483 				snd_rawmidi_output_trigger(substream, 0);  in close_substream()
486 	substream->ops->close(substream);  in close_substream()
487 	if (substream->runtime->private_free)  in close_substream()
488 		substream->runtime->private_free(substream);  in close_substream()
489 	snd_rawmidi_runtime_free(substream);  in close_substream()
490 	substream->opened = 0;  in close_substream()
491 	substream->append = 0;  in close_substream()
492 	put_pid(substream->pid);  in close_substream()
493 	substream->pid = NULL;  in close_substream()
494 	rmidi->streams[substream->stream].substream_opened--;  in close_substream()
547 static int snd_rawmidi_info(struct snd_rawmidi_substream *substream,  in snd_rawmidi_info()  argument
552 	if (substream == NULL)  in snd_rawmidi_info()
554 	rmidi = substream->rmidi;  in snd_rawmidi_info()
558 	info->subdevice = substream->number;  in snd_rawmidi_info()
559 	info->stream = substream->stream;  in snd_rawmidi_info()
563 	strcpy(info->subname, substream->name);  in snd_rawmidi_info()
564 	info->subdevices_count = substream->pstr->substream_count;  in snd_rawmidi_info()
565 	info->subdevices_avail = (substream->pstr->substream_count -  in snd_rawmidi_info()
566 				  substream->pstr->substream_opened);  in snd_rawmidi_info()
570 static int snd_rawmidi_info_user(struct snd_rawmidi_substream *substream,  in snd_rawmidi_info_user()  argument
575 	if ((err = snd_rawmidi_info(substream, &info)) < 0)  in snd_rawmidi_info_user()
586 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_info_select()  local
600 	list_for_each_entry(substream, &pstr->substreams, list) {  in snd_rawmidi_info_select()
601 		if ((unsigned int)substream->number == info->subdevice)  in snd_rawmidi_info_select()
602 			return snd_rawmidi_info(substream, info);  in snd_rawmidi_info_select()
626 int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream,  in snd_rawmidi_output_params()  argument
630 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_output_params()
632 	if (substream->append && substream->use_count > 1)  in snd_rawmidi_output_params()
634 	snd_rawmidi_drain_output(substream);  in snd_rawmidi_output_params()
651 	substream->active_sensing = !params->no_active_sensing;  in snd_rawmidi_output_params()
656 int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream,  in snd_rawmidi_input_params()  argument
660 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_input_params()
662 	snd_rawmidi_drain_input(substream);  in snd_rawmidi_input_params()
682 static int snd_rawmidi_output_status(struct snd_rawmidi_substream *substream,  in snd_rawmidi_output_status()  argument
685 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_output_status()
695 static int snd_rawmidi_input_status(struct snd_rawmidi_substream *substream,  in snd_rawmidi_input_status()  argument
698 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_input_status()
874 int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,  in snd_rawmidi_receive()  argument
879 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_receive()
881 	if (!substream->opened)  in snd_rawmidi_receive()
884 		rmidi_dbg(substream->rmidi,  in snd_rawmidi_receive()
890 		substream->bytes++;  in snd_rawmidi_receive()
900 		substream->bytes += count;  in snd_rawmidi_receive()
930 		else if (snd_rawmidi_ready(substream))  in snd_rawmidi_receive()
938 static long snd_rawmidi_kernel_read1(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_read1()  argument
944 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_read1()
978 long snd_rawmidi_kernel_read(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_read()  argument
981 	snd_rawmidi_input_trigger(substream, 1);  in snd_rawmidi_kernel_read()
982 	return snd_rawmidi_kernel_read1(substream, NULL/*userbuf*/, buf, count);  in snd_rawmidi_kernel_read()
992 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_read()  local
996 	substream = rfile->input;  in snd_rawmidi_read()
997 	if (substream == NULL)  in snd_rawmidi_read()
999 	runtime = substream->runtime;  in snd_rawmidi_read()
1000 	snd_rawmidi_input_trigger(substream, 1);  in snd_rawmidi_read()
1004 		while (!snd_rawmidi_ready(substream)) {  in snd_rawmidi_read()
1025 		count1 = snd_rawmidi_kernel_read1(substream,  in snd_rawmidi_read()
1044 int snd_rawmidi_transmit_empty(struct snd_rawmidi_substream *substream)  in snd_rawmidi_transmit_empty()  argument
1046 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_empty()
1051 		rmidi_dbg(substream->rmidi,  in snd_rawmidi_transmit_empty()
1070 int __snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,  in __snd_rawmidi_transmit_peek()  argument
1074 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in __snd_rawmidi_transmit_peek()
1077 		rmidi_dbg(substream->rmidi,  in __snd_rawmidi_transmit_peek()
1124 int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,  in snd_rawmidi_transmit_peek()  argument
1127 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_peek()
1132 	result = __snd_rawmidi_transmit_peek(substream, buffer, count);  in snd_rawmidi_transmit_peek()
1145 int __snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)  in __snd_rawmidi_transmit_ack()  argument
1147 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in __snd_rawmidi_transmit_ack()
1150 		rmidi_dbg(substream->rmidi,  in __snd_rawmidi_transmit_ack()
1158 	substream->bytes += count;  in __snd_rawmidi_transmit_ack()
1160 		if (runtime->drain || snd_rawmidi_ready(substream))  in __snd_rawmidi_transmit_ack()
1178 int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)  in snd_rawmidi_transmit_ack()  argument
1180 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_ack()
1185 	result = __snd_rawmidi_transmit_ack(substream, count);  in snd_rawmidi_transmit_ack()
1201 int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream,  in snd_rawmidi_transmit()  argument
1204 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit()
1209 	if (!substream->opened)  in snd_rawmidi_transmit()
1212 		count = __snd_rawmidi_transmit_peek(substream, buffer, count);  in snd_rawmidi_transmit()
1216 			result = __snd_rawmidi_transmit_ack(substream, count);  in snd_rawmidi_transmit()
1223 static long snd_rawmidi_kernel_write1(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_write1()  argument
1230 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_write1()
1240 	if (substream->append) {  in snd_rawmidi_kernel_write1()
1279 		snd_rawmidi_output_trigger(substream, 1);  in snd_rawmidi_kernel_write1()
1283 long snd_rawmidi_kernel_write(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_write()  argument
1286 	return snd_rawmidi_kernel_write1(substream, NULL, buf, count);  in snd_rawmidi_kernel_write()
1297 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_write()  local
1300 	substream = rfile->output;  in snd_rawmidi_write()
1301 	runtime = substream->runtime;  in snd_rawmidi_write()
1303 	if (substream->append && count > runtime->buffer_size)  in snd_rawmidi_write()
1308 		while (!snd_rawmidi_ready_append(substream, count)) {  in snd_rawmidi_write()
1329 		count1 = snd_rawmidi_kernel_write1(substream, buf, NULL, count);  in snd_rawmidi_write()
1404 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_proc_info_read()  local
1411 		list_for_each_entry(substream,  in snd_rawmidi_proc_info_read()
1417 				    substream->number,  in snd_rawmidi_proc_info_read()
1418 				    (unsigned long) substream->bytes);  in snd_rawmidi_proc_info_read()
1419 			if (substream->opened) {  in snd_rawmidi_proc_info_read()
1422 				    pid_vnr(substream->pid));  in snd_rawmidi_proc_info_read()
1423 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1435 		list_for_each_entry(substream,  in snd_rawmidi_proc_info_read()
1441 				    substream->number,  in snd_rawmidi_proc_info_read()
1442 				    (unsigned long) substream->bytes);  in snd_rawmidi_proc_info_read()
1443 			if (substream->opened) {  in snd_rawmidi_proc_info_read()
1446 					    pid_vnr(substream->pid));  in snd_rawmidi_proc_info_read()
1447 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1483 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_alloc_substreams()  local
1487 		substream = kzalloc(sizeof(*substream), GFP_KERNEL);  in snd_rawmidi_alloc_substreams()
1488 		if (!substream)  in snd_rawmidi_alloc_substreams()
1490 		substream->stream = direction;  in snd_rawmidi_alloc_substreams()
1491 		substream->number = idx;  in snd_rawmidi_alloc_substreams()
1492 		substream->rmidi = rmidi;  in snd_rawmidi_alloc_substreams()
1493 		substream->pstr = stream;  in snd_rawmidi_alloc_substreams()
1494 		list_add_tail(&substream->list, &stream->substreams);  in snd_rawmidi_alloc_substreams()
1578 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_free_substreams()  local
1581 		substream = list_entry(stream->substreams.next, struct snd_rawmidi_substream, list);  in snd_rawmidi_free_substreams()
1582 		list_del(&substream->list);  in snd_rawmidi_free_substreams()
1583 		kfree(substream);  in snd_rawmidi_free_substreams()
1752 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_set_ops()  local
1754 	list_for_each_entry(substream, &rmidi->streams[stream].substreams, list)  in snd_rawmidi_set_ops()
1755 		substream->ops = ops;  in snd_rawmidi_set_ops()