89 static inline int snd_rawmidi_ready(struct snd_rawmidi_substream *substream)  in snd_rawmidi_ready()  argument
91 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready()
96 static inline int snd_rawmidi_ready_append(struct snd_rawmidi_substream *substream,  in snd_rawmidi_ready_append()  argument
99 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready_append()
102 	       (!substream->append || runtime->avail >= count);  in snd_rawmidi_ready_append()
111 		runtime->event(runtime->substream);  in snd_rawmidi_input_event_work()
114 static int snd_rawmidi_runtime_create(struct snd_rawmidi_substream *substream)  in snd_rawmidi_runtime_create()  argument
121 	runtime->substream = substream;  in snd_rawmidi_runtime_create()
128 	if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)  in snd_rawmidi_runtime_create()
138 	substream->runtime = runtime;  in snd_rawmidi_runtime_create()
142 static int snd_rawmidi_runtime_free(struct snd_rawmidi_substream *substream)  in snd_rawmidi_runtime_free()  argument
144 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_runtime_free()
148 	substream->runtime = NULL;  in snd_rawmidi_runtime_free()
152 static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *substream, int up)  in snd_rawmidi_output_trigger()  argument
154 	if (!substream->opened)  in snd_rawmidi_output_trigger()
156 	substream->ops->trigger(substream, up);  in snd_rawmidi_output_trigger()
159 static void snd_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)  in snd_rawmidi_input_trigger()  argument
161 	if (!substream->opened)  in snd_rawmidi_input_trigger()
163 	substream->ops->trigger(substream, up);  in snd_rawmidi_input_trigger()
165 		cancel_work_sync(&substream->runtime->event_work);  in snd_rawmidi_input_trigger()
186 int snd_rawmidi_drop_output(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drop_output()  argument
188 	snd_rawmidi_output_trigger(substream, 0);  in snd_rawmidi_drop_output()
189 	reset_runtime_ptrs(substream->runtime, false);  in snd_rawmidi_drop_output()
194 int snd_rawmidi_drain_output(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drain_output()  argument
198 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_drain_output()
208 		rmidi_warn(substream->rmidi,  in snd_rawmidi_drain_output()
216 		if (substream->ops->drain)  in snd_rawmidi_drain_output()
217 			substream->ops->drain(substream);  in snd_rawmidi_drain_output()
220 		snd_rawmidi_drop_output(substream);  in snd_rawmidi_drain_output()
226 int snd_rawmidi_drain_input(struct snd_rawmidi_substream *substream)  in snd_rawmidi_drain_input()  argument
228 	snd_rawmidi_input_trigger(substream, 0);  in snd_rawmidi_drain_input()
229 	reset_runtime_ptrs(substream->runtime, true);  in snd_rawmidi_drain_input()
241 	struct snd_rawmidi_substream *substream;  in assign_substream()  local
253 	list_for_each_entry(substream, &s->substreams, list) {  in assign_substream()
254 		if (substream->opened) {  in assign_substream()
257 			    !substream->append)  in assign_substream()
260 		if (subdevice < 0 || subdevice == substream->number) {  in assign_substream()
261 			*sub_ret = substream;  in assign_substream()
270 			  struct snd_rawmidi_substream *substream,  in open_substream()  argument
275 	if (substream->use_count == 0) {  in open_substream()
276 		err = snd_rawmidi_runtime_create(substream);  in open_substream()
279 		err = substream->ops->open(substream);  in open_substream()
281 			snd_rawmidi_runtime_free(substream);  in open_substream()
284 		substream->opened = 1;  in open_substream()
285 		substream->active_sensing = 0;  in open_substream()
287 			substream->append = 1;  in open_substream()
288 		substream->pid = get_pid(task_pid(current));  in open_substream()
289 		rmidi->streams[substream->stream].substream_opened++;  in open_substream()
291 	substream->use_count++;  in open_substream()
296 			    struct snd_rawmidi_substream *substream,
473 			    struct snd_rawmidi_substream *substream,  in close_substream()  argument
476 	if (--substream->use_count)  in close_substream()
480 		if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)  in close_substream()
481 			snd_rawmidi_input_trigger(substream, 0);  in close_substream()
483 			if (substream->active_sensing) {  in close_substream()
488 				snd_rawmidi_kernel_write(substream, &buf, 1);  in close_substream()
490 			if (snd_rawmidi_drain_output(substream) == -ERESTARTSYS)  in close_substream()
491 				snd_rawmidi_output_trigger(substream, 0);  in close_substream()
494 	substream->ops->close(substream);  in close_substream()
495 	if (substream->runtime->private_free)  in close_substream()
496 		substream->runtime->private_free(substream);  in close_substream()
497 	snd_rawmidi_runtime_free(substream);  in close_substream()
498 	substream->opened = 0;  in close_substream()
499 	substream->append = 0;  in close_substream()
500 	put_pid(substream->pid);  in close_substream()
501 	substream->pid = NULL;  in close_substream()
502 	rmidi->streams[substream->stream].substream_opened--;  in close_substream()
555 static int snd_rawmidi_info(struct snd_rawmidi_substream *substream,  in snd_rawmidi_info()  argument
560 	if (substream == NULL)  in snd_rawmidi_info()
562 	rmidi = substream->rmidi;  in snd_rawmidi_info()
566 	info->subdevice = substream->number;  in snd_rawmidi_info()
567 	info->stream = substream->stream;  in snd_rawmidi_info()
571 	strcpy(info->subname, substream->name);  in snd_rawmidi_info()
572 	info->subdevices_count = substream->pstr->substream_count;  in snd_rawmidi_info()
573 	info->subdevices_avail = (substream->pstr->substream_count -  in snd_rawmidi_info()
574 				  substream->pstr->substream_opened);  in snd_rawmidi_info()
578 static int snd_rawmidi_info_user(struct snd_rawmidi_substream *substream,  in snd_rawmidi_info_user()  argument
584 	err = snd_rawmidi_info(substream, &info);  in snd_rawmidi_info_user()
597 	struct snd_rawmidi_substream *substream;  in __snd_rawmidi_info_select()  local
609 	list_for_each_entry(substream, &pstr->substreams, list) {  in __snd_rawmidi_info_select()
610 		if ((unsigned int)substream->number == info->subdevice)  in __snd_rawmidi_info_select()
611 			return snd_rawmidi_info(substream, info);  in __snd_rawmidi_info_select()
673 int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream,  in snd_rawmidi_output_params()  argument
676 	if (substream->append && substream->use_count > 1)  in snd_rawmidi_output_params()
678 	snd_rawmidi_drain_output(substream);  in snd_rawmidi_output_params()
679 	substream->active_sensing = !params->no_active_sensing;  in snd_rawmidi_output_params()
680 	return resize_runtime_buffer(substream->runtime, params, false);  in snd_rawmidi_output_params()
684 int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream,  in snd_rawmidi_input_params()  argument
687 	snd_rawmidi_drain_input(substream);  in snd_rawmidi_input_params()
688 	return resize_runtime_buffer(substream->runtime, params, true);  in snd_rawmidi_input_params()
692 static int snd_rawmidi_output_status(struct snd_rawmidi_substream *substream,  in snd_rawmidi_output_status()  argument
695 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_output_status()
705 static int snd_rawmidi_input_status(struct snd_rawmidi_substream *substream,  in snd_rawmidi_input_status()  argument
708 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_input_status()
889 int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,  in snd_rawmidi_receive()  argument
894 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_receive()
896 	if (!substream->opened)  in snd_rawmidi_receive()
899 		rmidi_dbg(substream->rmidi,  in snd_rawmidi_receive()
905 		substream->bytes++;  in snd_rawmidi_receive()
915 		substream->bytes += count;  in snd_rawmidi_receive()
945 		else if (snd_rawmidi_ready(substream))  in snd_rawmidi_receive()
953 static long snd_rawmidi_kernel_read1(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_read1()  argument
959 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_read1()
993 long snd_rawmidi_kernel_read(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_read()  argument
996 	snd_rawmidi_input_trigger(substream, 1);  in snd_rawmidi_kernel_read()
997 	return snd_rawmidi_kernel_read1(substream, NULL/*userbuf*/, buf, count);  in snd_rawmidi_kernel_read()
1007 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_read()  local
1011 	substream = rfile->input;  in snd_rawmidi_read()
1012 	if (substream == NULL)  in snd_rawmidi_read()
1014 	runtime = substream->runtime;  in snd_rawmidi_read()
1015 	snd_rawmidi_input_trigger(substream, 1);  in snd_rawmidi_read()
1019 		while (!snd_rawmidi_ready(substream)) {  in snd_rawmidi_read()
1041 		count1 = snd_rawmidi_kernel_read1(substream,  in snd_rawmidi_read()
1060 int snd_rawmidi_transmit_empty(struct snd_rawmidi_substream *substream)  in snd_rawmidi_transmit_empty()  argument
1062 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_empty()
1067 		rmidi_dbg(substream->rmidi,  in snd_rawmidi_transmit_empty()
1086 int __snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,  in __snd_rawmidi_transmit_peek()  argument
1090 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in __snd_rawmidi_transmit_peek()
1093 		rmidi_dbg(substream->rmidi,  in __snd_rawmidi_transmit_peek()
1140 int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,  in snd_rawmidi_transmit_peek()  argument
1143 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_peek()
1148 	result = __snd_rawmidi_transmit_peek(substream, buffer, count);  in snd_rawmidi_transmit_peek()
1161 int __snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)  in __snd_rawmidi_transmit_ack()  argument
1163 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in __snd_rawmidi_transmit_ack()
1166 		rmidi_dbg(substream->rmidi,  in __snd_rawmidi_transmit_ack()
1174 	substream->bytes += count;  in __snd_rawmidi_transmit_ack()
1176 		if (runtime->drain || snd_rawmidi_ready(substream))  in __snd_rawmidi_transmit_ack()
1194 int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)  in snd_rawmidi_transmit_ack()  argument
1196 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_ack()
1201 	result = __snd_rawmidi_transmit_ack(substream, count);  in snd_rawmidi_transmit_ack()
1217 int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream,  in snd_rawmidi_transmit()  argument
1220 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit()
1225 	if (!substream->opened)  in snd_rawmidi_transmit()
1228 		count = __snd_rawmidi_transmit_peek(substream, buffer, count);  in snd_rawmidi_transmit()
1232 			result = __snd_rawmidi_transmit_ack(substream, count);  in snd_rawmidi_transmit()
1239 static long snd_rawmidi_kernel_write1(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_write1()  argument
1246 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_write1()
1256 	if (substream->append) {  in snd_rawmidi_kernel_write1()
1295 		snd_rawmidi_output_trigger(substream, 1);  in snd_rawmidi_kernel_write1()
1299 long snd_rawmidi_kernel_write(struct snd_rawmidi_substream *substream,  in snd_rawmidi_kernel_write()  argument
1302 	return snd_rawmidi_kernel_write1(substream, NULL, buf, count);  in snd_rawmidi_kernel_write()
1313 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_write()  local
1316 	substream = rfile->output;  in snd_rawmidi_write()
1317 	runtime = substream->runtime;  in snd_rawmidi_write()
1319 	if (substream->append && count > runtime->buffer_size)  in snd_rawmidi_write()
1324 		while (!snd_rawmidi_ready_append(substream, count)) {  in snd_rawmidi_write()
1346 		count1 = snd_rawmidi_kernel_write1(substream, buf, NULL, count);  in snd_rawmidi_write()
1421 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_proc_info_read()  local
1428 		list_for_each_entry(substream,  in snd_rawmidi_proc_info_read()
1434 				    substream->number,  in snd_rawmidi_proc_info_read()
1435 				    (unsigned long) substream->bytes);  in snd_rawmidi_proc_info_read()
1436 			if (substream->opened) {  in snd_rawmidi_proc_info_read()
1439 				    pid_vnr(substream->pid));  in snd_rawmidi_proc_info_read()
1440 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1452 		list_for_each_entry(substream,  in snd_rawmidi_proc_info_read()
1458 				    substream->number,  in snd_rawmidi_proc_info_read()
1459 				    (unsigned long) substream->bytes);  in snd_rawmidi_proc_info_read()
1460 			if (substream->opened) {  in snd_rawmidi_proc_info_read()
1463 					    pid_vnr(substream->pid));  in snd_rawmidi_proc_info_read()
1464 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1499 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_alloc_substreams()  local
1503 		substream = kzalloc(sizeof(*substream), GFP_KERNEL);  in snd_rawmidi_alloc_substreams()
1504 		if (!substream)  in snd_rawmidi_alloc_substreams()
1506 		substream->stream = direction;  in snd_rawmidi_alloc_substreams()
1507 		substream->number = idx;  in snd_rawmidi_alloc_substreams()
1508 		substream->rmidi = rmidi;  in snd_rawmidi_alloc_substreams()
1509 		substream->pstr = stream;  in snd_rawmidi_alloc_substreams()
1510 		list_add_tail(&substream->list, &stream->substreams);  in snd_rawmidi_alloc_substreams()
1596 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_free_substreams()  local
1599 		substream = list_entry(stream->substreams.next, struct snd_rawmidi_substream, list);  in snd_rawmidi_free_substreams()
1600 		list_del(&substream->list);  in snd_rawmidi_free_substreams()
1601 		kfree(substream);  in snd_rawmidi_free_substreams()
1780 	struct snd_rawmidi_substream *substream;  in snd_rawmidi_set_ops()  local
1782 	list_for_each_entry(substream, &rmidi->streams[stream].substreams, list)  in snd_rawmidi_set_ops()
1783 		substream->ops = ops;  in snd_rawmidi_set_ops()