83 static void drain_midi_queue(int dev)  in drain_midi_queue()  argument
90 	if (midi_devs[dev]->buffer_status != NULL)  in drain_midi_queue()
91 		wait_event_interruptible_timeout(midi_sleeper[dev],  in drain_midi_queue()
92 				!midi_devs[dev]->buffer_status(dev), HZ/10);  in drain_midi_queue()
95 static void midi_input_intr(int dev, unsigned char data)  in midi_input_intr()  argument
97 	if (midi_in_buf[dev] == NULL)  in midi_input_intr()
107 	if (SPACE_AVAIL(midi_in_buf[dev])) {  in midi_input_intr()
108 		QUEUE_BYTE(midi_in_buf[dev], data);  in midi_input_intr()
109 		wake_up(&input_sleeper[dev]);  in midi_input_intr()
113 static void midi_output_intr(int dev)  in midi_output_intr()  argument
123 	int             dev;  in midi_poll()  local
128 		for (dev = 0; dev < num_midis; dev++)  in midi_poll()
129 			if (midi_devs[dev] != NULL && midi_out_buf[dev] != NULL)  in midi_poll()
131 				while (DATA_AVAIL(midi_out_buf[dev]))  in midi_poll()
134 					int c = midi_out_buf[dev]->queue[midi_out_buf[dev]->head];  in midi_poll()
137 					ok = midi_devs[dev]->outputc(dev, c);  in midi_poll()
141 					midi_out_buf[dev]->head = (midi_out_buf[dev]->head + 1) % MAX_QUEUE_SIZE;  in midi_poll()
142 					midi_out_buf[dev]->len--;  in midi_poll()
145 				if (DATA_AVAIL(midi_out_buf[dev]) < 100)  in midi_poll()
146 					wake_up(&midi_sleeper[dev]);  in midi_poll()
157 int MIDIbuf_open(int dev, struct file *file)  in MIDIbuf_open()  argument
161 	dev = dev >> 4;  in MIDIbuf_open()
169 	if (dev < 0 || dev >= num_midis || midi_devs[dev] == NULL)  in MIDIbuf_open()
175 	module_put(midi_devs[dev]->owner);  in MIDIbuf_open()
177 	if ((err = midi_devs[dev]->open(dev, mode,  in MIDIbuf_open()
181 	parms[dev].prech_timeout = MAX_SCHEDULE_TIMEOUT;  in MIDIbuf_open()
182 	midi_in_buf[dev] = vmalloc(sizeof(struct midi_buf));  in MIDIbuf_open()
184 	if (midi_in_buf[dev] == NULL)  in MIDIbuf_open()
187 		midi_devs[dev]->close(dev);  in MIDIbuf_open()
190 	midi_in_buf[dev]->len = midi_in_buf[dev]->head = midi_in_buf[dev]->tail = 0;  in MIDIbuf_open()
192 	midi_out_buf[dev] = vmalloc(sizeof(struct midi_buf));  in MIDIbuf_open()
194 	if (midi_out_buf[dev] == NULL)  in MIDIbuf_open()
197 		midi_devs[dev]->close(dev);  in MIDIbuf_open()
198 		vfree(midi_in_buf[dev]);  in MIDIbuf_open()
199 		midi_in_buf[dev] = NULL;  in MIDIbuf_open()
202 	midi_out_buf[dev]->len = midi_out_buf[dev]->head = midi_out_buf[dev]->tail = 0;  in MIDIbuf_open()
205 	init_waitqueue_head(&midi_sleeper[dev]);  in MIDIbuf_open()
206 	init_waitqueue_head(&input_sleeper[dev]);  in MIDIbuf_open()
216 void MIDIbuf_release(int dev, struct file *file)  in MIDIbuf_release()  argument
220 	dev = dev >> 4;  in MIDIbuf_release()
223 	if (dev < 0 || dev >= num_midis || midi_devs[dev] == NULL)  in MIDIbuf_release()
232 		midi_devs[dev]->outputc(dev, 0xfe);	/*  in MIDIbuf_release()
237 		wait_event_interruptible(midi_sleeper[dev],  in MIDIbuf_release()
238 					 !DATA_AVAIL(midi_out_buf[dev]));  in MIDIbuf_release()
243 		drain_midi_queue(dev);	/*  in MIDIbuf_release()
248 	midi_devs[dev]->close(dev);  in MIDIbuf_release()
253 	vfree(midi_in_buf[dev]);  in MIDIbuf_release()
254 	vfree(midi_out_buf[dev]);  in MIDIbuf_release()
255 	midi_in_buf[dev] = NULL;  in MIDIbuf_release()
256 	midi_out_buf[dev] = NULL;  in MIDIbuf_release()
258 	module_put(midi_devs[dev]->owner);  in MIDIbuf_release()
261 int MIDIbuf_write(int dev, struct file *file, const char __user *buf, int count)  in MIDIbuf_write()  argument
266 	dev = dev >> 4;  in MIDIbuf_write()
275 		n = SPACE_AVAIL(midi_out_buf[dev]);  in MIDIbuf_write()
286 			if (wait_event_interruptible(midi_sleeper[dev],  in MIDIbuf_write()
287 						SPACE_AVAIL(midi_out_buf[dev])))  in MIDIbuf_write()
292 			n = SPACE_AVAIL(midi_out_buf[dev]);  in MIDIbuf_write()
306 			QUEUE_BYTE(midi_out_buf[dev], tmp_data);  in MIDIbuf_write()
315 int MIDIbuf_read(int dev, struct file *file, char __user *buf, int count)  in MIDIbuf_read()  argument
320 	dev = dev >> 4;  in MIDIbuf_read()
322 	if (!DATA_AVAIL(midi_in_buf[dev])) {	/*  in MIDIbuf_read()
329 		wait_event_interruptible_timeout(input_sleeper[dev],  in MIDIbuf_read()
330 						 DATA_AVAIL(midi_in_buf[dev]),  in MIDIbuf_read()
331 						 parms[dev].prech_timeout);  in MIDIbuf_read()
336 	if (c == 0 && DATA_AVAIL(midi_in_buf[dev]))	/*  in MIDIbuf_read()
340 		n = DATA_AVAIL(midi_in_buf[dev]);  in MIDIbuf_read()
348 			REMOVE_BYTE(midi_in_buf[dev], tmp_data);  in MIDIbuf_read()
364 int MIDIbuf_ioctl(int dev, struct file *file,  in MIDIbuf_ioctl()  argument
369 	dev = dev >> 4;  in MIDIbuf_ioctl()
373 		if (midi_devs[dev]->coproc)	/* Coprocessor ioctl */  in MIDIbuf_ioctl()
374 			return midi_devs[dev]->coproc->ioctl(midi_devs[dev]->coproc->devc, cmd, arg, 0);  in MIDIbuf_ioctl()
388 				parms[dev].prech_timeout = val;  in MIDIbuf_ioctl()
392 				if (!midi_devs[dev]->ioctl)  in MIDIbuf_ioctl()
394 				return midi_devs[dev]->ioctl(dev, cmd, arg);  in MIDIbuf_ioctl()
400 unsigned int MIDIbuf_poll(int dev, struct file *file, poll_table * wait)  in MIDIbuf_poll()  argument
404 	dev = dev >> 4;  in MIDIbuf_poll()
407 	poll_wait(file, &input_sleeper[dev], wait);  in MIDIbuf_poll()
408 	if (DATA_AVAIL(midi_in_buf[dev]))  in MIDIbuf_poll()
412 	poll_wait(file, &midi_sleeper[dev], wait);  in MIDIbuf_poll()
413 	if (!SPACE_AVAIL(midi_out_buf[dev]))  in MIDIbuf_poll()
420 int MIDIbuf_avail(int dev)  in MIDIbuf_avail()  argument
422 	if (midi_in_buf[dev])  in MIDIbuf_avail()
423 		return DATA_AVAIL (midi_in_buf[dev]);  in MIDIbuf_avail()