77 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready()  local
79 	return runtime->avail >= runtime->avail_min;  in snd_rawmidi_ready()
85 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_ready_append()  local
87 	return runtime->avail >= runtime->avail_min &&  in snd_rawmidi_ready_append()
88 	       (!substream->append || runtime->avail >= count);  in snd_rawmidi_ready_append()
93 	struct snd_rawmidi_runtime *runtime =  in snd_rawmidi_input_event_work()  local
96 	if (runtime->event)  in snd_rawmidi_input_event_work()
97 		runtime->event(runtime->substream);  in snd_rawmidi_input_event_work()
102 	struct snd_rawmidi_runtime *runtime;  in snd_rawmidi_runtime_create()  local
104 	runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);  in snd_rawmidi_runtime_create()
105 	if (!runtime)  in snd_rawmidi_runtime_create()
107 	runtime->substream = substream;  in snd_rawmidi_runtime_create()
108 	spin_lock_init(&runtime->lock);  in snd_rawmidi_runtime_create()
109 	init_waitqueue_head(&runtime->sleep);  in snd_rawmidi_runtime_create()
110 	INIT_WORK(&runtime->event_work, snd_rawmidi_input_event_work);  in snd_rawmidi_runtime_create()
111 	runtime->event = NULL;  in snd_rawmidi_runtime_create()
112 	runtime->buffer_size = PAGE_SIZE;  in snd_rawmidi_runtime_create()
113 	runtime->avail_min = 1;  in snd_rawmidi_runtime_create()
115 		runtime->avail = 0;  in snd_rawmidi_runtime_create()
117 		runtime->avail = runtime->buffer_size;  in snd_rawmidi_runtime_create()
118 	runtime->buffer = kvzalloc(runtime->buffer_size, GFP_KERNEL);  in snd_rawmidi_runtime_create()
119 	if (!runtime->buffer) {  in snd_rawmidi_runtime_create()
120 		kfree(runtime);  in snd_rawmidi_runtime_create()
123 	runtime->appl_ptr = runtime->hw_ptr = 0;  in snd_rawmidi_runtime_create()
124 	substream->runtime = runtime;  in snd_rawmidi_runtime_create()
130 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_runtime_free()  local
132 	kvfree(runtime->buffer);  in snd_rawmidi_runtime_free()
133 	kfree(runtime);  in snd_rawmidi_runtime_free()
134 	substream->runtime = NULL;  in snd_rawmidi_runtime_free()
151 		cancel_work_sync(&substream->runtime->event_work);  in snd_rawmidi_input_trigger()
154 static void __reset_runtime_ptrs(struct snd_rawmidi_runtime *runtime,  in __reset_runtime_ptrs()  argument
157 	runtime->drain = 0;  in __reset_runtime_ptrs()
158 	runtime->appl_ptr = runtime->hw_ptr = 0;  in __reset_runtime_ptrs()
159 	runtime->avail = is_input ? 0 : runtime->buffer_size;  in __reset_runtime_ptrs()
162 static void reset_runtime_ptrs(struct snd_rawmidi_runtime *runtime,  in reset_runtime_ptrs()  argument
167 	spin_lock_irqsave(&runtime->lock, flags);  in reset_runtime_ptrs()
168 	__reset_runtime_ptrs(runtime, is_input);  in reset_runtime_ptrs()
169 	spin_unlock_irqrestore(&runtime->lock, flags);  in reset_runtime_ptrs()
175 	reset_runtime_ptrs(substream->runtime, false);  in snd_rawmidi_drop_output()
184 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_drain_output()  local
187 	runtime->drain = 1;  in snd_rawmidi_drain_output()
188 	timeout = wait_event_interruptible_timeout(runtime->sleep,  in snd_rawmidi_drain_output()
189 				(runtime->avail >= runtime->buffer_size),  in snd_rawmidi_drain_output()
193 	if (runtime->avail < runtime->buffer_size && !timeout) {  in snd_rawmidi_drain_output()
196 			   (long)runtime->avail, (long)runtime->buffer_size);  in snd_rawmidi_drain_output()
199 	runtime->drain = 0;  in snd_rawmidi_drain_output()
215 	reset_runtime_ptrs(substream->runtime, true);  in snd_rawmidi_drain_input()
439 	if (rawmidi_file->input && rawmidi_file->input->runtime)  in snd_rawmidi_open()
440 		rawmidi_file->input->runtime->oss = (maj == SOUND_MAJOR);  in snd_rawmidi_open()
441 	if (rawmidi_file->output && rawmidi_file->output->runtime)  in snd_rawmidi_open()
442 		rawmidi_file->output->runtime->oss = (maj == SOUND_MAJOR);  in snd_rawmidi_open()
481 	if (substream->runtime->private_free)  in close_substream()
482 		substream->runtime->private_free(substream);  in close_substream()
634 static int resize_runtime_buffer(struct snd_rawmidi_runtime *runtime,  in resize_runtime_buffer()  argument
644 	if (params->buffer_size != runtime->buffer_size) {  in resize_runtime_buffer()
648 		spin_lock_irq(&runtime->lock);  in resize_runtime_buffer()
649 		oldbuf = runtime->buffer;  in resize_runtime_buffer()
650 		runtime->buffer = newbuf;  in resize_runtime_buffer()
651 		runtime->buffer_size = params->buffer_size;  in resize_runtime_buffer()
652 		__reset_runtime_ptrs(runtime, is_input);  in resize_runtime_buffer()
653 		spin_unlock_irq(&runtime->lock);  in resize_runtime_buffer()
656 	runtime->avail_min = params->avail_min;  in resize_runtime_buffer()
667 	return resize_runtime_buffer(substream->runtime, params, false);  in snd_rawmidi_output_params()
675 	return resize_runtime_buffer(substream->runtime, params, true);  in snd_rawmidi_input_params()
682 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_output_status()  local
686 	spin_lock_irq(&runtime->lock);  in snd_rawmidi_output_status()
687 	status->avail = runtime->avail;  in snd_rawmidi_output_status()
688 	spin_unlock_irq(&runtime->lock);  in snd_rawmidi_output_status()
695 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_input_status()  local
699 	spin_lock_irq(&runtime->lock);  in snd_rawmidi_input_status()
700 	status->avail = runtime->avail;  in snd_rawmidi_input_status()
701 	status->xruns = runtime->xruns;  in snd_rawmidi_input_status()
702 	runtime->xruns = 0;  in snd_rawmidi_input_status()
703 	spin_unlock_irq(&runtime->lock);  in snd_rawmidi_input_status()
881 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_receive()  local
885 	if (runtime->buffer == NULL) {  in snd_rawmidi_receive()
890 	spin_lock_irqsave(&runtime->lock, flags);  in snd_rawmidi_receive()
893 		if (runtime->avail < runtime->buffer_size) {  in snd_rawmidi_receive()
894 			runtime->buffer[runtime->hw_ptr++] = buffer[0];  in snd_rawmidi_receive()
895 			runtime->hw_ptr %= runtime->buffer_size;  in snd_rawmidi_receive()
896 			runtime->avail++;  in snd_rawmidi_receive()
899 			runtime->xruns++;  in snd_rawmidi_receive()
903 		count1 = runtime->buffer_size - runtime->hw_ptr;  in snd_rawmidi_receive()
906 		if (count1 > (int)(runtime->buffer_size - runtime->avail))  in snd_rawmidi_receive()
907 			count1 = runtime->buffer_size - runtime->avail;  in snd_rawmidi_receive()
908 		memcpy(runtime->buffer + runtime->hw_ptr, buffer, count1);  in snd_rawmidi_receive()
909 		runtime->hw_ptr += count1;  in snd_rawmidi_receive()
910 		runtime->hw_ptr %= runtime->buffer_size;  in snd_rawmidi_receive()
911 		runtime->avail += count1;  in snd_rawmidi_receive()
917 			if (count1 > (int)(runtime->buffer_size - runtime->avail)) {  in snd_rawmidi_receive()
918 				count1 = runtime->buffer_size - runtime->avail;  in snd_rawmidi_receive()
919 				runtime->xruns += count - count1;  in snd_rawmidi_receive()
922 				memcpy(runtime->buffer, buffer, count1);  in snd_rawmidi_receive()
923 				runtime->hw_ptr = count1;  in snd_rawmidi_receive()
924 				runtime->avail += count1;  in snd_rawmidi_receive()
930 		if (runtime->event)  in snd_rawmidi_receive()
931 			schedule_work(&runtime->event_work);  in snd_rawmidi_receive()
933 			wake_up(&runtime->sleep);  in snd_rawmidi_receive()
935 	spin_unlock_irqrestore(&runtime->lock, flags);  in snd_rawmidi_receive()
946 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_read1()  local
949 	spin_lock_irqsave(&runtime->lock, flags);  in snd_rawmidi_kernel_read1()
950 	while (count > 0 && runtime->avail) {  in snd_rawmidi_kernel_read1()
951 		count1 = runtime->buffer_size - runtime->appl_ptr;  in snd_rawmidi_kernel_read1()
954 		if (count1 > (int)runtime->avail)  in snd_rawmidi_kernel_read1()
955 			count1 = runtime->avail;  in snd_rawmidi_kernel_read1()
957 		/* update runtime->appl_ptr before unlocking for userbuf */  in snd_rawmidi_kernel_read1()
958 		appl_ptr = runtime->appl_ptr;  in snd_rawmidi_kernel_read1()
959 		runtime->appl_ptr += count1;  in snd_rawmidi_kernel_read1()
960 		runtime->appl_ptr %= runtime->buffer_size;  in snd_rawmidi_kernel_read1()
961 		runtime->avail -= count1;  in snd_rawmidi_kernel_read1()
964 			memcpy(kernelbuf + result, runtime->buffer + appl_ptr, count1);  in snd_rawmidi_kernel_read1()
966 			spin_unlock_irqrestore(&runtime->lock, flags);  in snd_rawmidi_kernel_read1()
968 					 runtime->buffer + appl_ptr, count1)) {  in snd_rawmidi_kernel_read1()
971 			spin_lock_irqsave(&runtime->lock, flags);  in snd_rawmidi_kernel_read1()
976 	spin_unlock_irqrestore(&runtime->lock, flags);  in snd_rawmidi_kernel_read1()
995 	struct snd_rawmidi_runtime *runtime;  in snd_rawmidi_read()  local
1001 	runtime = substream->runtime;  in snd_rawmidi_read()
1005 		spin_lock_irq(&runtime->lock);  in snd_rawmidi_read()
1010 				spin_unlock_irq(&runtime->lock);  in snd_rawmidi_read()
1014 			add_wait_queue(&runtime->sleep, &wait);  in snd_rawmidi_read()
1016 			spin_unlock_irq(&runtime->lock);  in snd_rawmidi_read()
1018 			remove_wait_queue(&runtime->sleep, &wait);  in snd_rawmidi_read()
1023 			if (!runtime->avail)  in snd_rawmidi_read()
1025 			spin_lock_irq(&runtime->lock);  in snd_rawmidi_read()
1027 		spin_unlock_irq(&runtime->lock);  in snd_rawmidi_read()
1049 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_empty()  local
1053 	if (runtime->buffer == NULL) {  in snd_rawmidi_transmit_empty()
1058 	spin_lock_irqsave(&runtime->lock, flags);  in snd_rawmidi_transmit_empty()
1059 	result = runtime->avail >= runtime->buffer_size;  in snd_rawmidi_transmit_empty()
1060 	spin_unlock_irqrestore(&runtime->lock, flags);  in snd_rawmidi_transmit_empty()
1077 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in __snd_rawmidi_transmit_peek()  local
1079 	if (runtime->buffer == NULL) {  in __snd_rawmidi_transmit_peek()
1085 	if (runtime->avail >= runtime->buffer_size) {  in __snd_rawmidi_transmit_peek()
1090 		*buffer = runtime->buffer[runtime->hw_ptr];  in __snd_rawmidi_transmit_peek()
1093 		count1 = runtime->buffer_size - runtime->hw_ptr;  in __snd_rawmidi_transmit_peek()
1096 		if (count1 > (int)(runtime->buffer_size - runtime->avail))  in __snd_rawmidi_transmit_peek()
1097 			count1 = runtime->buffer_size - runtime->avail;  in __snd_rawmidi_transmit_peek()
1098 		memcpy(buffer, runtime->buffer + runtime->hw_ptr, count1);  in __snd_rawmidi_transmit_peek()
1102 			if (count > (int)(runtime->buffer_size - runtime->avail - count1))  in __snd_rawmidi_transmit_peek()
1103 				count = runtime->buffer_size - runtime->avail - count1;  in __snd_rawmidi_transmit_peek()
1104 			memcpy(buffer + count1, runtime->buffer, count);  in __snd_rawmidi_transmit_peek()
1130 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_peek()  local
1134 	spin_lock_irqsave(&runtime->lock, flags);  in snd_rawmidi_transmit_peek()
1136 	spin_unlock_irqrestore(&runtime->lock, flags);  in snd_rawmidi_transmit_peek()
1150 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in __snd_rawmidi_transmit_ack()  local
1152 	if (runtime->buffer == NULL) {  in __snd_rawmidi_transmit_ack()
1157 	snd_BUG_ON(runtime->avail + count > runtime->buffer_size);  in __snd_rawmidi_transmit_ack()
1158 	runtime->hw_ptr += count;  in __snd_rawmidi_transmit_ack()
1159 	runtime->hw_ptr %= runtime->buffer_size;  in __snd_rawmidi_transmit_ack()
1160 	runtime->avail += count;  in __snd_rawmidi_transmit_ack()
1163 		if (runtime->drain || snd_rawmidi_ready(substream))  in __snd_rawmidi_transmit_ack()
1164 			wake_up(&runtime->sleep);  in __snd_rawmidi_transmit_ack()
1183 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit_ack()  local
1187 	spin_lock_irqsave(&runtime->lock, flags);  in snd_rawmidi_transmit_ack()
1189 	spin_unlock_irqrestore(&runtime->lock, flags);  in snd_rawmidi_transmit_ack()
1207 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_transmit()  local
1211 	spin_lock_irqsave(&runtime->lock, flags);  in snd_rawmidi_transmit()
1221 	spin_unlock_irqrestore(&runtime->lock, flags);  in snd_rawmidi_transmit()
1234 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_proceed()  local
1238 	spin_lock_irqsave(&runtime->lock, flags);  in snd_rawmidi_proceed()
1239 	if (runtime->avail < runtime->buffer_size) {  in snd_rawmidi_proceed()
1240 		count = runtime->buffer_size - runtime->avail;  in snd_rawmidi_proceed()
1243 	spin_unlock_irqrestore(&runtime->lock, flags);  in snd_rawmidi_proceed()
1255 	struct snd_rawmidi_runtime *runtime = substream->runtime;  in snd_rawmidi_kernel_write1()  local
1260 	if (snd_BUG_ON(!runtime->buffer))  in snd_rawmidi_kernel_write1()
1264 	spin_lock_irqsave(&runtime->lock, flags);  in snd_rawmidi_kernel_write1()
1266 		if ((long)runtime->avail < count) {  in snd_rawmidi_kernel_write1()
1267 			spin_unlock_irqrestore(&runtime->lock, flags);  in snd_rawmidi_kernel_write1()
1271 	while (count > 0 && runtime->avail > 0) {  in snd_rawmidi_kernel_write1()
1272 		count1 = runtime->buffer_size - runtime->appl_ptr;  in snd_rawmidi_kernel_write1()
1275 		if (count1 > (long)runtime->avail)  in snd_rawmidi_kernel_write1()
1276 			count1 = runtime->avail;  in snd_rawmidi_kernel_write1()
1278 		/* update runtime->appl_ptr before unlocking for userbuf */  in snd_rawmidi_kernel_write1()
1279 		appl_ptr = runtime->appl_ptr;  in snd_rawmidi_kernel_write1()
1280 		runtime->appl_ptr += count1;  in snd_rawmidi_kernel_write1()
1281 		runtime->appl_ptr %= runtime->buffer_size;  in snd_rawmidi_kernel_write1()
1282 		runtime->avail -= count1;  in snd_rawmidi_kernel_write1()
1285 			memcpy(runtime->buffer + appl_ptr,  in snd_rawmidi_kernel_write1()
1288 			spin_unlock_irqrestore(&runtime->lock, flags);  in snd_rawmidi_kernel_write1()
1289 			if (copy_from_user(runtime->buffer + appl_ptr,  in snd_rawmidi_kernel_write1()
1291 				spin_lock_irqsave(&runtime->lock, flags);  in snd_rawmidi_kernel_write1()
1295 			spin_lock_irqsave(&runtime->lock, flags);  in snd_rawmidi_kernel_write1()
1301 	count1 = runtime->avail < runtime->buffer_size;  in snd_rawmidi_kernel_write1()
1302 	spin_unlock_irqrestore(&runtime->lock, flags);  in snd_rawmidi_kernel_write1()
1321 	struct snd_rawmidi_runtime *runtime;  in snd_rawmidi_write()  local
1326 	runtime = substream->runtime;  in snd_rawmidi_write()
1328 	if (substream->append && count > runtime->buffer_size)  in snd_rawmidi_write()
1332 		spin_lock_irq(&runtime->lock);  in snd_rawmidi_write()
1337 				spin_unlock_irq(&runtime->lock);  in snd_rawmidi_write()
1341 			add_wait_queue(&runtime->sleep, &wait);  in snd_rawmidi_write()
1343 			spin_unlock_irq(&runtime->lock);  in snd_rawmidi_write()
1345 			remove_wait_queue(&runtime->sleep, &wait);  in snd_rawmidi_write()
1350 			if (!runtime->avail && !timeout)  in snd_rawmidi_write()
1352 			spin_lock_irq(&runtime->lock);  in snd_rawmidi_write()
1354 		spin_unlock_irq(&runtime->lock);  in snd_rawmidi_write()
1365 		spin_lock_irq(&runtime->lock);  in snd_rawmidi_write()
1366 		while (runtime->avail != runtime->buffer_size) {  in snd_rawmidi_write()
1368 			unsigned int last_avail = runtime->avail;  in snd_rawmidi_write()
1371 			add_wait_queue(&runtime->sleep, &wait);  in snd_rawmidi_write()
1373 			spin_unlock_irq(&runtime->lock);  in snd_rawmidi_write()
1375 			remove_wait_queue(&runtime->sleep, &wait);  in snd_rawmidi_write()
1378 			if (runtime->avail == last_avail && !timeout)  in snd_rawmidi_write()
1380 			spin_lock_irq(&runtime->lock);  in snd_rawmidi_write()
1382 		spin_unlock_irq(&runtime->lock);  in snd_rawmidi_write()
1390 	struct snd_rawmidi_runtime *runtime;  in snd_rawmidi_poll()  local
1395 		runtime = rfile->input->runtime;  in snd_rawmidi_poll()
1397 		poll_wait(file, &runtime->sleep, wait);  in snd_rawmidi_poll()
1400 		runtime = rfile->output->runtime;  in snd_rawmidi_poll()
1401 		poll_wait(file, &runtime->sleep, wait);  in snd_rawmidi_poll()
1431 	struct snd_rawmidi_runtime *runtime;  in snd_rawmidi_proc_info_read()  local
1449 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1454 				    runtime->oss ? "OSS compatible" : "native",  in snd_rawmidi_proc_info_read()
1455 				    (unsigned long) runtime->buffer_size,  in snd_rawmidi_proc_info_read()
1456 				    (unsigned long) runtime->avail);  in snd_rawmidi_proc_info_read()
1473 				runtime = substream->runtime;  in snd_rawmidi_proc_info_read()
1478 					    (unsigned long) runtime->buffer_size,  in snd_rawmidi_proc_info_read()
1479 					    (unsigned long) runtime->avail,  in snd_rawmidi_proc_info_read()
1480 					    (unsigned long) runtime->xruns);  in snd_rawmidi_proc_info_read()
1754 			if (s->runtime)  in snd_rawmidi_dev_disconnect()
1755 				wake_up(&s->runtime->sleep);  in snd_rawmidi_dev_disconnect()