1 files changed, 124 insertions, 0 deletions
diff --git a/sys/i386/isa/sound/midibuf.c b/sys/i386/isa/sound/midibuf.c
new file mode 100644
index 0000000..399fdfd
--- /dev/null
+++ b/sys/i386/isa/sound/midibuf.c
@@ -0,0 +1,124 @@
+/*
+ * sound/midibuf.c
+ *
+ * Device file manager for /dev/midi
+ *
+ * NOTE! This part of the driver is currently just a stub.
+ *
+ * Copyright by Hannu Savolainen 1993
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer. 2.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id$
+ */
+
+#include "sound_config.h"
+
+#if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_MPU401)
+
+#if 0
+#include "midiioctl.h"
+#include "midivar.h"
+#endif
+
+static int      midibuf_busy = 0;
+
+int
+MIDIbuf_open (int dev, struct fileinfo *file)
+{
+  int             mode, err;
+
+  dev = dev >> 4;
+  mode = file->mode & O_ACCMODE;
+
+  if (midibuf_busy)
+    return RET_ERROR (EBUSY);
+
+  if (!mpu401_dev)
+    {
+      printk ("Midi: MPU-401 compatible Midi interface not present\n");
+      return RET_ERROR (ENXIO);
+    }
+
+  if ((err = midi_devs[mpu401_dev]->open (mpu401_dev, mode, NULL, NULL)) < 0)
+    return err;
+
+  midibuf_busy = 1;
+
+  return RET_ERROR (ENXIO);
+}
+
+void
+MIDIbuf_release (int dev, struct fileinfo *file)
+{
+  int             mode;
+
+  dev = dev >> 4;
+  mode = file->mode & O_ACCMODE;
+
+  midi_devs[mpu401_dev]->close (mpu401_dev);
+  midibuf_busy = 0;
+}
+
+int
+MIDIbuf_write (int dev, struct fileinfo *file, snd_rw_buf * buf, int count)
+{
+
+  dev = dev >> 4;
+
+  return count;
+}
+
+
+int
+MIDIbuf_read (int dev, struct fileinfo *file, snd_rw_buf * buf, int count)
+{
+  dev = dev >> 4;
+
+  return RET_ERROR (EIO);
+}
+
+int
+MIDIbuf_ioctl (int dev, struct fileinfo *file,
+	       unsigned int cmd, unsigned int arg)
+{
+  dev = dev >> 4;
+
+  switch (cmd)
+    {
+
+    default:
+      return midi_devs[0]->ioctl (dev, cmd, arg);
+    }
+}
+
+void
+MIDIbuf_bytes_received (int dev, unsigned char *buf, int count)
+{
+}
+
+long
+MIDIbuf_init (long mem_start)
+{
+  return mem_start;
+}
+
+#endif