81 static inline int snd_rawmidi_ready(struct snd_rawmidi_substream *substream)  in snd_rawmidi_ready()  argument
83 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready()
87 static inline int snd_rawmidi_ready_append(struct snd_rawmidi_substream *substream,  in snd_rawmidi_ready_append()  argument
90 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready_append()
92 	       (!substream->append || runtime->avail >= count);  in snd_rawmidi_ready_append()
100 		runtime->event(runtime->substream);  in snd_rawmidi_input_event_work()
103 static int snd_rawmidi_runtime_create(struct snd_rawmidi_substream *substream)  in snd_rawmidi_runtime_create()  argument
109 	runtime->substream = substream;  in snd_rawmidi_runtime_create()
116 	if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)  in snd_rawmidi_runtime_create()
125 	substream->runtime = runtime;  in snd_rawmidi_runtime_create()
129 static int snd_rawmidi_runtime_free(struct snd_rawmidi_substream *substream)  in snd_rawmidi_runtime_free()  argument
131 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_runtime_free()
135 	substream->runtime = NULL;  in snd_rawmidi_runtime_free()
139 static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,int up)  in snd_rawmidi_output_trigger()  argument
141 	if (!substream->opened)  in snd_rawmidi_output_trigger()
143 	substream->ops->trigger(substream, up);  in snd_rawmidi_output_trigger()
146 static void snd_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)  in snd_rawmidi_input_trigger()  argument
148 	if (!substream->opened)  in snd_rawmidi_input_trigger()
150 	substream->ops->trigger(substream, up);  in snd_rawmidi_input_trigger()
152 		cancel_work_sync(&substream->runtime->event_work);  in snd_rawmidi_input_trigger()
155 int snd_rawmidi_drop_output(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drop_output()  argument
158 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_drop_output()
160 	snd_rawmidi_output_trigger(substream, 0);  in snd_rawmidi_drop_output()
169 int snd_rawmidi_drain_output(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drain_output()  argument
173 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_drain_output()
189 		if (substream->ops->drain)  in snd_rawmidi_drain_output()
190 			substream->ops->drain(substream);  in snd_rawmidi_drain_output()
193 		snd_rawmidi_drop_output(substream);  in snd_rawmidi_drain_output()
198 int snd_rawmidi_drain_input(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drain_input()  argument
201 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_drain_input()
203 	snd_rawmidi_input_trigger(substream, 0);  in snd_rawmidi_drain_input()
219 	struct snd_rawmidi_substream *substream;  in assign_substream()  local
231 	list_for_each_entry(substream, &s->substreams, list) {  in assign_substream()
232 		if (substream->opened) {  in assign_substream()
235 			    !substream->append)  in assign_substream()
238 		if (subdevice < 0 || subdevice == substream->number) {  in assign_substream()
239 			*sub_ret = substream;  in assign_substream()
248 			  struct snd_rawmidi_substream *substream,  in open_substream()  argument
253 	if (substream->use_count == 0) {  in open_substream()
254 		err = snd_rawmidi_runtime_create(substream);  in open_substream()
257 		err = substream->ops->open(substream);  in open_substream()
259 			snd_rawmidi_runtime_free(substream);  in open_substream()
262 		substream->opened = 1;  in open_substream()
263 		substream->active_sensing = 0;  in open_substream()
265 			substream->append = 1;  in open_substream()
266 		substream->pid = get_pid(task_pid(current));  in open_substream()
267 		rmidi->streams[substream->stream].substream_opened++;  in open_substream()
269 	substream->use_count++;  in open_substream()
274 			    struct snd_rawmidi_substream *substream,
462 			    struct snd_rawmidi_substream *substream,  in close_substream()  argument
465 	if (--substream->use_count)  in close_substream()
469 		if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)  in close_substream()
470 			snd_rawmidi_input_trigger(substream, 0);  in close_substream()
472 			if (substream->active_sensing) {  in close_substream()
477 				snd_rawmidi_kernel_write(substream, &buf, 1);  in close_substream()
479 			if (snd_rawmidi_drain_output(substream) == -ERESTARTSYS)  in close_substream()
480 				snd_rawmidi_output_trigger(substream, 0);  in close_substream()
483 	substream->ops->close(substream);  in close_substream()
484 	if (substream->runtime->private_free)  in close_substream()
485 		substream->runtime->private_free(substream);  in close_substream()
486 	snd_rawmidi_runtime_free(substream);  in close_substream()
487 	substream->opened = 0;  in close_substream()
488 	substream->append = 0;  in close_substream()
489 	put_pid(substream->pid);  in close_substream()
490 	substream->pid = NULL;  in close_substream()
491 	rmidi->streams[substream->stream].substream_opened--;  in close_substream()
543 static int snd_rawmidi_info(struct snd_rawmidi_substream *substream,  in snd_rawmidi_info()  argument
548 	if (substream == NULL)  in snd_rawmidi_info()
550 	rmidi = substream->rmidi;  in snd_rawmidi_info()
554 	info->subdevice = substream->number;  in snd_rawmidi_info()
555 	info->stream = substream->stream;  in snd_rawmidi_info()
559 	strcpy(info->subname, substream->name);  in snd_rawmidi_info()
560 	info->subdevices_count = substream->pstr->substream_count;  in snd_rawmidi_info()
561 	info->subdevices_avail = (substream->pstr->substream_count -  in snd_rawmidi_info()
562 				  substream->pstr->substream_opened);  in snd_rawmidi_info()
566 static int snd_rawmidi_info_user(struct snd_rawmidi_substream *substream,  in snd_rawmidi_info_user()  argument
571 	if ((err = snd_rawmidi_info(substream, &info)) < 0)  in snd_rawmidi_info_user()
582 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_info_select()  local
596 	list_for_each_entry(substream, &pstr->substreams, list) {  in snd_rawmidi_info_select()
597 		if ((unsigned int)substream->number == info->subdevice)  in snd_rawmidi_info_select()
598 			return snd_rawmidi_info(substream, info);  in snd_rawmidi_info_select()
621 int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream,  in snd_rawmidi_output_params()  argument
625 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_output_params()
627 	if (substream->append && substream->use_count > 1)  in snd_rawmidi_output_params()
629 	snd_rawmidi_drain_output(substream);  in snd_rawmidi_output_params()
646 	substream->active_sensing = !params->no_active_sensing;  in snd_rawmidi_output_params()
650 int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream,  in snd_rawmidi_input_params()  argument
654 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_input_params()
656 	snd_rawmidi_drain_input(substream);  in snd_rawmidi_input_params()
675 static int snd_rawmidi_output_status(struct snd_rawmidi_substream *substream,  in snd_rawmidi_output_status()  argument
678 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_output_status()
688 static int snd_rawmidi_input_status(struct snd_rawmidi_substream *substream,  in snd_rawmidi_input_status()  argument
691 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_input_status()
868 int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,  in snd_rawmidi_receive()  argument
873 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_receive()
875 	if (!substream->opened)  in snd_rawmidi_receive()
883 		substream->bytes++;  in snd_rawmidi_receive()
893 		substream->bytes += count;  in snd_rawmidi_receive()
923 		else if (snd_rawmidi_ready(substream))  in snd_rawmidi_receive()
930 static long snd_rawmidi_kernel_read1(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_read1()  argument
936 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_read1()
965 long snd_rawmidi_kernel_read(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_read()  argument
968 	snd_rawmidi_input_trigger(substream, 1);  in snd_rawmidi_kernel_read()
969 	return snd_rawmidi_kernel_read1(substream, NULL/*userbuf*/, buf, count);  in snd_rawmidi_kernel_read()
978 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_read()  local
982 	substream = rfile->input;  in snd_rawmidi_read()
983 	if (substream == NULL)  in snd_rawmidi_read()
985 	runtime = substream->runtime;  in snd_rawmidi_read()
986 	snd_rawmidi_input_trigger(substream, 1);  in snd_rawmidi_read()
990 		while (!snd_rawmidi_ready(substream)) {  in snd_rawmidi_read()
1011 		count1 = snd_rawmidi_kernel_read1(substream,  in snd_rawmidi_read()
1030 int snd_rawmidi_transmit_empty(struct snd_rawmidi_substream *substream)  in snd_rawmidi_transmit_empty()  argument
1032 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_empty()
1060 int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,  in snd_rawmidi_transmit_peek()  argument
1065 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_peek()
1112 int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)  in snd_rawmidi_transmit_ack()  argument
1115 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_ack()
1126 	substream->bytes += count;  in snd_rawmidi_transmit_ack()
1128 		if (runtime->drain || snd_rawmidi_ready(substream))  in snd_rawmidi_transmit_ack()
1145 int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream,  in snd_rawmidi_transmit()  argument
1148 	if (!substream->opened)  in snd_rawmidi_transmit()
1150 	count = snd_rawmidi_transmit_peek(substream, buffer, count);  in snd_rawmidi_transmit()
1153 	return snd_rawmidi_transmit_ack(substream, count);  in snd_rawmidi_transmit()
1156 static long snd_rawmidi_kernel_write1(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_write1()  argument
1163 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_write1()
1172 	if (substream->append) {  in snd_rawmidi_kernel_write1()
1207 		snd_rawmidi_output_trigger(substream, 1);  in snd_rawmidi_kernel_write1()
1211 long snd_rawmidi_kernel_write(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_write()  argument
1214 	return snd_rawmidi_kernel_write1(substream, NULL, buf, count);  in snd_rawmidi_kernel_write()
1224 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_write()  local
1227 	substream = rfile->output;  in snd_rawmidi_write()
1228 	runtime = substream->runtime;  in snd_rawmidi_write()
1230 	if (substream->append && count > runtime->buffer_size)  in snd_rawmidi_write()
1235 		while (!snd_rawmidi_ready_append(substream, count)) {  in snd_rawmidi_write()
1256 		count1 = snd_rawmidi_kernel_write1(substream, buf, NULL, count);  in snd_rawmidi_write()
1331 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_proc_info_read()  local
1338 		list_for_each_entry(substream,  in snd_rawmidi_proc_info_read()
1344 				    substream->number,  in snd_rawmidi_proc_info_read()
1345 				    (unsigned long) substream->bytes);  in snd_rawmidi_proc_info_read()
1346 			if (substream->opened) {  in snd_rawmidi_proc_info_read()
1349 				    pid_vnr(substream->pid));  in snd_rawmidi_proc_info_read()
1350 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1362 		list_for_each_entry(substream,  in snd_rawmidi_proc_info_read()
1368 				    substream->number,  in snd_rawmidi_proc_info_read()
1369 				    (unsigned long) substream->bytes);  in snd_rawmidi_proc_info_read()
1370 			if (substream->opened) {  in snd_rawmidi_proc_info_read()
1373 					    pid_vnr(substream->pid));  in snd_rawmidi_proc_info_read()
1374 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1410 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_alloc_substreams()  local
1414 		substream = kzalloc(sizeof(*substream), GFP_KERNEL);  in snd_rawmidi_alloc_substreams()
1415 		if (substream == NULL) {  in snd_rawmidi_alloc_substreams()
1419 		substream->stream = direction;  in snd_rawmidi_alloc_substreams()
1420 		substream->number = idx;  in snd_rawmidi_alloc_substreams()
1421 		substream->rmidi = rmidi;  in snd_rawmidi_alloc_substreams()
1422 		substream->pstr = stream;  in snd_rawmidi_alloc_substreams()
1423 		list_add_tail(&substream->list, &stream->substreams);  in snd_rawmidi_alloc_substreams()
1498 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_free_substreams()  local
1501 		substream = list_entry(stream->substreams.next, struct snd_rawmidi_substream, list);  in snd_rawmidi_free_substreams()
1502 		list_del(&substream->list);  in snd_rawmidi_free_substreams()
1503 		kfree(substream);  in snd_rawmidi_free_substreams()
1668 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_set_ops()  local
1670 	list_for_each_entry(substream, &rmidi->streams[stream].substreams, list)  in snd_rawmidi_set_ops()
1671 		substream->ops = ops;  in snd_rawmidi_set_ops()