81 static void drain_midi_queue(int dev)  in drain_midi_queue()  argument
88 	if (midi_devs[dev]->buffer_status != NULL)  in drain_midi_queue()
89 		wait_event_interruptible_timeout(midi_sleeper[dev],  in drain_midi_queue()
90 				!midi_devs[dev]->buffer_status(dev), HZ/10);  in drain_midi_queue()
93 static void midi_input_intr(int dev, unsigned char data)  in midi_input_intr()  argument
95 	if (midi_in_buf[dev] == NULL)  in midi_input_intr()
105 	if (SPACE_AVAIL(midi_in_buf[dev])) {  in midi_input_intr()
106 		QUEUE_BYTE(midi_in_buf[dev], data);  in midi_input_intr()
107 		wake_up(&input_sleeper[dev]);  in midi_input_intr()
111 static void midi_output_intr(int dev)  in midi_output_intr()  argument
121 	int             dev;  in midi_poll()  local
126 		for (dev = 0; dev < num_midis; dev++)  in midi_poll()
127 			if (midi_devs[dev] != NULL && midi_out_buf[dev] != NULL)  in midi_poll()
129 				while (DATA_AVAIL(midi_out_buf[dev]))  in midi_poll()
132 					int c = midi_out_buf[dev]->queue[midi_out_buf[dev]->head];  in midi_poll()
135 					ok = midi_devs[dev]->outputc(dev, c);  in midi_poll()
139 					midi_out_buf[dev]->head = (midi_out_buf[dev]->head + 1) % MAX_QUEUE_SIZE;  in midi_poll()
140 					midi_out_buf[dev]->len--;  in midi_poll()
143 				if (DATA_AVAIL(midi_out_buf[dev]) < 100)  in midi_poll()
144 					wake_up(&midi_sleeper[dev]);  in midi_poll()
155 int MIDIbuf_open(int dev, struct file *file)  in MIDIbuf_open()  argument
159 	dev = dev >> 4;  in MIDIbuf_open()
167 	if (dev < 0 || dev >= num_midis || midi_devs[dev] == NULL)  in MIDIbuf_open()
173 	module_put(midi_devs[dev]->owner);  in MIDIbuf_open()
175 	if ((err = midi_devs[dev]->open(dev, mode,  in MIDIbuf_open()
179 	parms[dev].prech_timeout = MAX_SCHEDULE_TIMEOUT;  in MIDIbuf_open()
180 	midi_in_buf[dev] = vmalloc(sizeof(struct midi_buf));  in MIDIbuf_open()
182 	if (midi_in_buf[dev] == NULL)  in MIDIbuf_open()
185 		midi_devs[dev]->close(dev);  in MIDIbuf_open()
188 	midi_in_buf[dev]->len = midi_in_buf[dev]->head = midi_in_buf[dev]->tail = 0;  in MIDIbuf_open()
190 	midi_out_buf[dev] = vmalloc(sizeof(struct midi_buf));  in MIDIbuf_open()
192 	if (midi_out_buf[dev] == NULL)  in MIDIbuf_open()
195 		midi_devs[dev]->close(dev);  in MIDIbuf_open()
196 		vfree(midi_in_buf[dev]);  in MIDIbuf_open()
197 		midi_in_buf[dev] = NULL;  in MIDIbuf_open()
200 	midi_out_buf[dev]->len = midi_out_buf[dev]->head = midi_out_buf[dev]->tail = 0;  in MIDIbuf_open()
203 	init_waitqueue_head(&midi_sleeper[dev]);  in MIDIbuf_open()
204 	init_waitqueue_head(&input_sleeper[dev]);  in MIDIbuf_open()
214 void MIDIbuf_release(int dev, struct file *file)  in MIDIbuf_release()  argument
218 	dev = dev >> 4;  in MIDIbuf_release()
221 	if (dev < 0 || dev >= num_midis || midi_devs[dev] == NULL)  in MIDIbuf_release()
230 		midi_devs[dev]->outputc(dev, 0xfe);	/*  in MIDIbuf_release()
235 		wait_event_interruptible(midi_sleeper[dev],  in MIDIbuf_release()
236 					 !DATA_AVAIL(midi_out_buf[dev]));  in MIDIbuf_release()
241 		drain_midi_queue(dev);	/*  in MIDIbuf_release()
246 	midi_devs[dev]->close(dev);  in MIDIbuf_release()
251 	vfree(midi_in_buf[dev]);  in MIDIbuf_release()
252 	vfree(midi_out_buf[dev]);  in MIDIbuf_release()
253 	midi_in_buf[dev] = NULL;  in MIDIbuf_release()
254 	midi_out_buf[dev] = NULL;  in MIDIbuf_release()
256 	module_put(midi_devs[dev]->owner);  in MIDIbuf_release()
259 int MIDIbuf_write(int dev, struct file *file, const char __user *buf, int count)  in MIDIbuf_write()  argument
264 	dev = dev >> 4;  in MIDIbuf_write()
273 		n = SPACE_AVAIL(midi_out_buf[dev]);  in MIDIbuf_write()
284 			if (wait_event_interruptible(midi_sleeper[dev],  in MIDIbuf_write()
285 						SPACE_AVAIL(midi_out_buf[dev])))  in MIDIbuf_write()
290 			n = SPACE_AVAIL(midi_out_buf[dev]);  in MIDIbuf_write()
304 			QUEUE_BYTE(midi_out_buf[dev], tmp_data);  in MIDIbuf_write()
313 int MIDIbuf_read(int dev, struct file *file, char __user *buf, int count)  in MIDIbuf_read()  argument
318 	dev = dev >> 4;  in MIDIbuf_read()
320 	if (!DATA_AVAIL(midi_in_buf[dev])) {	/*  in MIDIbuf_read()
327 		wait_event_interruptible_timeout(input_sleeper[dev],  in MIDIbuf_read()
328 						 DATA_AVAIL(midi_in_buf[dev]),  in MIDIbuf_read()
329 						 parms[dev].prech_timeout);  in MIDIbuf_read()
334 	if (c == 0 && DATA_AVAIL(midi_in_buf[dev]))	/*  in MIDIbuf_read()
338 		n = DATA_AVAIL(midi_in_buf[dev]);  in MIDIbuf_read()
346 			REMOVE_BYTE(midi_in_buf[dev], tmp_data);  in MIDIbuf_read()
362 int MIDIbuf_ioctl(int dev, struct file *file,  in MIDIbuf_ioctl()  argument
367 	dev = dev >> 4;  in MIDIbuf_ioctl()
371 		if (midi_devs[dev]->coproc)	/* Coprocessor ioctl */  in MIDIbuf_ioctl()
372 			return midi_devs[dev]->coproc->ioctl(midi_devs[dev]->coproc->devc, cmd, arg, 0);  in MIDIbuf_ioctl()
386 				parms[dev].prech_timeout = val;  in MIDIbuf_ioctl()
390 				if (!midi_devs[dev]->ioctl)  in MIDIbuf_ioctl()
392 				return midi_devs[dev]->ioctl(dev, cmd, arg);  in MIDIbuf_ioctl()
398 unsigned int MIDIbuf_poll(int dev, struct file *file, poll_table * wait)  in MIDIbuf_poll()  argument
402 	dev = dev >> 4;  in MIDIbuf_poll()
405 	poll_wait(file, &input_sleeper[dev], wait);  in MIDIbuf_poll()
406 	if (DATA_AVAIL(midi_in_buf[dev]))  in MIDIbuf_poll()
410 	poll_wait(file, &midi_sleeper[dev], wait);  in MIDIbuf_poll()
411 	if (!SPACE_AVAIL(midi_out_buf[dev]))  in MIDIbuf_poll()
418 int MIDIbuf_avail(int dev)  in MIDIbuf_avail()  argument
420 	if (midi_in_buf[dev])  in MIDIbuf_avail()
421 		return DATA_AVAIL (midi_in_buf[dev]);  in MIDIbuf_avail()