75 static inline int snd_rawmidi_ready(struct snd_rawmidi_substream *substream)  in snd_rawmidi_ready()  argument
77 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready()
82 static inline int snd_rawmidi_ready_append(struct snd_rawmidi_substream *substream,  in snd_rawmidi_ready_append()  argument
85 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready_append()
88 	       (!substream->append || runtime->avail >= count);  in snd_rawmidi_ready_append()
97 		runtime->event(runtime->substream);  in snd_rawmidi_input_event_work()
100 static int snd_rawmidi_runtime_create(struct snd_rawmidi_substream *substream)  in snd_rawmidi_runtime_create()  argument
107 	runtime->substream = substream;  in snd_rawmidi_runtime_create()
114 	if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)  in snd_rawmidi_runtime_create()
124 	substream->runtime = runtime;  in snd_rawmidi_runtime_create()
128 static int snd_rawmidi_runtime_free(struct snd_rawmidi_substream *substream)  in snd_rawmidi_runtime_free()  argument
130 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_runtime_free()
134 	substream->runtime = NULL;  in snd_rawmidi_runtime_free()
138 static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *substream, int up)  in snd_rawmidi_output_trigger()  argument
140 	if (!substream->opened)  in snd_rawmidi_output_trigger()
142 	substream->ops->trigger(substream, up);  in snd_rawmidi_output_trigger()
145 static void snd_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)  in snd_rawmidi_input_trigger()  argument
147 	if (!substream->opened)  in snd_rawmidi_input_trigger()
149 	substream->ops->trigger(substream, up);  in snd_rawmidi_input_trigger()
151 		cancel_work_sync(&substream->runtime->event_work);  in snd_rawmidi_input_trigger()
172 int snd_rawmidi_drop_output(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drop_output()  argument
174 	snd_rawmidi_output_trigger(substream, 0);  in snd_rawmidi_drop_output()
175 	reset_runtime_ptrs(substream->runtime, false);  in snd_rawmidi_drop_output()
180 int snd_rawmidi_drain_output(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drain_output()  argument
184 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_drain_output()
194 		rmidi_warn(substream->rmidi,  in snd_rawmidi_drain_output()
202 		if (substream->ops->drain)  in snd_rawmidi_drain_output()
203 			substream->ops->drain(substream);  in snd_rawmidi_drain_output()
206 		snd_rawmidi_drop_output(substream);  in snd_rawmidi_drain_output()
212 int snd_rawmidi_drain_input(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drain_input()  argument
214 	snd_rawmidi_input_trigger(substream, 0);  in snd_rawmidi_drain_input()
215 	reset_runtime_ptrs(substream->runtime, true);  in snd_rawmidi_drain_input()
227 	struct snd_rawmidi_substream *substream;  in assign_substream()  local
239 	list_for_each_entry(substream, &s->substreams, list) {  in assign_substream()
240 		if (substream->opened) {  in assign_substream()
243 			    !substream->append)  in assign_substream()
246 		if (subdevice < 0 || subdevice == substream->number) {  in assign_substream()
247 			*sub_ret = substream;  in assign_substream()
256 			  struct snd_rawmidi_substream *substream,  in open_substream()  argument
261 	if (substream->use_count == 0) {  in open_substream()
262 		err = snd_rawmidi_runtime_create(substream);  in open_substream()
265 		err = substream->ops->open(substream);  in open_substream()
267 			snd_rawmidi_runtime_free(substream);  in open_substream()
270 		substream->opened = 1;  in open_substream()
271 		substream->active_sensing = 0;  in open_substream()
273 			substream->append = 1;  in open_substream()
274 		substream->pid = get_pid(task_pid(current));  in open_substream()
275 		rmidi->streams[substream->stream].substream_opened++;  in open_substream()
277 	substream->use_count++;  in open_substream()
282 			    struct snd_rawmidi_substream *substream,
459 			    struct snd_rawmidi_substream *substream,  in close_substream()  argument
462 	if (--substream->use_count)  in close_substream()
466 		if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)  in close_substream()
467 			snd_rawmidi_input_trigger(substream, 0);  in close_substream()
469 			if (substream->active_sensing) {  in close_substream()
474 				snd_rawmidi_kernel_write(substream, &buf, 1);  in close_substream()
476 			if (snd_rawmidi_drain_output(substream) == -ERESTARTSYS)  in close_substream()
477 				snd_rawmidi_output_trigger(substream, 0);  in close_substream()
480 	substream->ops->close(substream);  in close_substream()
481 	if (substream->runtime->private_free)  in close_substream()
482 		substream->runtime->private_free(substream);  in close_substream()
483 	snd_rawmidi_runtime_free(substream);  in close_substream()
484 	substream->opened = 0;  in close_substream()
485 	substream->append = 0;  in close_substream()
486 	put_pid(substream->pid);  in close_substream()
487 	substream->pid = NULL;  in close_substream()
488 	rmidi->streams[substream->stream].substream_opened--;  in close_substream()
541 static int snd_rawmidi_info(struct snd_rawmidi_substream *substream,  in snd_rawmidi_info()  argument
546 	if (substream == NULL)  in snd_rawmidi_info()
548 	rmidi = substream->rmidi;  in snd_rawmidi_info()
552 	info->subdevice = substream->number;  in snd_rawmidi_info()
553 	info->stream = substream->stream;  in snd_rawmidi_info()
557 	strcpy(info->subname, substream->name);  in snd_rawmidi_info()
558 	info->subdevices_count = substream->pstr->substream_count;  in snd_rawmidi_info()
559 	info->subdevices_avail = (substream->pstr->substream_count -  in snd_rawmidi_info()
560 				  substream->pstr->substream_opened);  in snd_rawmidi_info()
564 static int snd_rawmidi_info_user(struct snd_rawmidi_substream *substream,  in snd_rawmidi_info_user()  argument
570 	err = snd_rawmidi_info(substream, &info);  in snd_rawmidi_info_user()
583 	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()
660 int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream,  in snd_rawmidi_output_params()  argument
663 	if (substream->append && substream->use_count > 1)  in snd_rawmidi_output_params()
665 	snd_rawmidi_drain_output(substream);  in snd_rawmidi_output_params()
666 	substream->active_sensing = !params->no_active_sensing;  in snd_rawmidi_output_params()
667 	return resize_runtime_buffer(substream->runtime, params, false);  in snd_rawmidi_output_params()
671 int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream,  in snd_rawmidi_input_params()  argument
674 	snd_rawmidi_drain_input(substream);  in snd_rawmidi_input_params()
675 	return resize_runtime_buffer(substream->runtime, params, true);  in snd_rawmidi_input_params()
679 static int snd_rawmidi_output_status(struct snd_rawmidi_substream *substream,  in snd_rawmidi_output_status()  argument
682 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_output_status()
692 static int snd_rawmidi_input_status(struct snd_rawmidi_substream *substream,  in snd_rawmidi_input_status()  argument
695 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_input_status()
876 int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,  in snd_rawmidi_receive()  argument
881 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_receive()
883 	if (!substream->opened)  in snd_rawmidi_receive()
886 		rmidi_dbg(substream->rmidi,  in snd_rawmidi_receive()
892 		substream->bytes++;  in snd_rawmidi_receive()
902 		substream->bytes += count;  in snd_rawmidi_receive()
932 		else if (snd_rawmidi_ready(substream))  in snd_rawmidi_receive()
940 static long snd_rawmidi_kernel_read1(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_read1()  argument
946 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_read1()
980 long snd_rawmidi_kernel_read(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_read()  argument
983 	snd_rawmidi_input_trigger(substream, 1);  in snd_rawmidi_kernel_read()
984 	return snd_rawmidi_kernel_read1(substream, NULL/*userbuf*/, buf, count);  in snd_rawmidi_kernel_read()
994 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_read()  local
998 	substream = rfile->input;  in snd_rawmidi_read()
999 	if (substream == NULL)  in snd_rawmidi_read()
1001 	runtime = substream->runtime;  in snd_rawmidi_read()
1002 	snd_rawmidi_input_trigger(substream, 1);  in snd_rawmidi_read()
1006 		while (!snd_rawmidi_ready(substream)) {  in snd_rawmidi_read()
1028 		count1 = snd_rawmidi_kernel_read1(substream,  in snd_rawmidi_read()
1047 int snd_rawmidi_transmit_empty(struct snd_rawmidi_substream *substream)  in snd_rawmidi_transmit_empty()  argument
1049 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_empty()
1054 		rmidi_dbg(substream->rmidi,  in snd_rawmidi_transmit_empty()
1073 int __snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,  in __snd_rawmidi_transmit_peek()  argument
1077 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in __snd_rawmidi_transmit_peek()
1080 		rmidi_dbg(substream->rmidi,  in __snd_rawmidi_transmit_peek()
1127 int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,  in snd_rawmidi_transmit_peek()  argument
1130 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_peek()
1135 	result = __snd_rawmidi_transmit_peek(substream, buffer, count);  in snd_rawmidi_transmit_peek()
1148 int __snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)  in __snd_rawmidi_transmit_ack()  argument
1150 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in __snd_rawmidi_transmit_ack()
1153 		rmidi_dbg(substream->rmidi,  in __snd_rawmidi_transmit_ack()
1161 	substream->bytes += count;  in __snd_rawmidi_transmit_ack()
1163 		if (runtime->drain || snd_rawmidi_ready(substream))  in __snd_rawmidi_transmit_ack()
1181 int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)  in snd_rawmidi_transmit_ack()  argument
1183 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_ack()
1188 	result = __snd_rawmidi_transmit_ack(substream, count);  in snd_rawmidi_transmit_ack()
1204 int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream,  in snd_rawmidi_transmit()  argument
1207 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit()
1212 	if (!substream->opened)  in snd_rawmidi_transmit()
1215 		count = __snd_rawmidi_transmit_peek(substream, buffer, count);  in snd_rawmidi_transmit()
1219 			result = __snd_rawmidi_transmit_ack(substream, count);  in snd_rawmidi_transmit()
1232 int snd_rawmidi_proceed(struct snd_rawmidi_substream *substream)  in snd_rawmidi_proceed()  argument
1234 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_proceed()
1241 		__snd_rawmidi_transmit_ack(substream, count);  in snd_rawmidi_proceed()
1248 static long snd_rawmidi_kernel_write1(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_write1()  argument
1255 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_write1()
1265 	if (substream->append) {  in snd_rawmidi_kernel_write1()
1304 		snd_rawmidi_output_trigger(substream, 1);  in snd_rawmidi_kernel_write1()
1308 long snd_rawmidi_kernel_write(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_write()  argument
1311 	return snd_rawmidi_kernel_write1(substream, NULL, buf, count);  in snd_rawmidi_kernel_write()
1322 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_write()  local
1325 	substream = rfile->output;  in snd_rawmidi_write()
1326 	runtime = substream->runtime;  in snd_rawmidi_write()
1328 	if (substream->append && count > runtime->buffer_size)  in snd_rawmidi_write()
1333 		while (!snd_rawmidi_ready_append(substream, count)) {  in snd_rawmidi_write()
1355 		count1 = snd_rawmidi_kernel_write1(substream, buf, NULL, count);  in snd_rawmidi_write()
1430 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_proc_info_read()  local
1437 		list_for_each_entry(substream,  in snd_rawmidi_proc_info_read()
1443 				    substream->number,  in snd_rawmidi_proc_info_read()
1444 				    (unsigned long) substream->bytes);  in snd_rawmidi_proc_info_read()
1445 			if (substream->opened) {  in snd_rawmidi_proc_info_read()
1448 				    pid_vnr(substream->pid));  in snd_rawmidi_proc_info_read()
1449 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1461 		list_for_each_entry(substream,  in snd_rawmidi_proc_info_read()
1467 				    substream->number,  in snd_rawmidi_proc_info_read()
1468 				    (unsigned long) substream->bytes);  in snd_rawmidi_proc_info_read()
1469 			if (substream->opened) {  in snd_rawmidi_proc_info_read()
1472 					    pid_vnr(substream->pid));  in snd_rawmidi_proc_info_read()
1473 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1508 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_alloc_substreams()  local
1512 		substream = kzalloc(sizeof(*substream), GFP_KERNEL);  in snd_rawmidi_alloc_substreams()
1513 		if (!substream)  in snd_rawmidi_alloc_substreams()
1515 		substream->stream = direction;  in snd_rawmidi_alloc_substreams()
1516 		substream->number = idx;  in snd_rawmidi_alloc_substreams()
1517 		substream->rmidi = rmidi;  in snd_rawmidi_alloc_substreams()
1518 		substream->pstr = stream;  in snd_rawmidi_alloc_substreams()
1519 		list_add_tail(&substream->list, &stream->substreams);  in snd_rawmidi_alloc_substreams()
1605 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_free_substreams()  local
1608 		substream = list_entry(stream->substreams.next, struct snd_rawmidi_substream, list);  in snd_rawmidi_free_substreams()
1609 		list_del(&substream->list);  in snd_rawmidi_free_substreams()
1610 		kfree(substream);  in snd_rawmidi_free_substreams()
1789 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_set_ops()  local
1791 	list_for_each_entry(substream, &rmidi->streams[stream].substreams, list)  in snd_rawmidi_set_ops()
1792 		substream->ops = ops;  in snd_rawmidi_set_ops()