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/*
* Include file for midi sequencer driver.
*
* Copyright by Seigo Tanimura 1999.
*
* 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.
*
* $FreeBSD$
*
*/
/*
* first, include kernel header files.
*/
#ifndef _SEQUENCER_H_
#define _SEQUENCER_H_
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioccom.h>
#include <sys/filio.h>
#include <sys/sockio.h>
#include <sys/fcntl.h>
#include <sys/tty.h>
#include <sys/proc.h>
#include <sys/kernel.h> /* for DATA_SET */
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/uio.h>
#include <sys/syslog.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/condvar.h>
#include <machine/clock.h> /* for DELAY */
#include <sys/soundcard.h>
#define SEQ_CDEV_MAJOR MIDI_CDEV_MAJOR
/*
* the following assumes that FreeBSD 3.X uses poll(2) instead of select(2).
* This change dates to late 1997.
*/
#include <sys/poll.h>
#define d_select_t d_poll_t
typedef struct _seqdev_info seqdev_info;
typedef int (seq_callback_t)(seqdev_info *sd, int reason);
/*
* The order of mutex lock (from the first to the last)
*
* 1. sequencer flags, queues, timer and device list
* 2. midi synth voice and channel
* 3. midi synth status
* 4. generic midi flags and queues
* 5. midi device
*/
/*
* descriptor of sequencer operations ...
*
*/
struct _seqdev_info {
/*
* the first part of the descriptor is filled up from a
* template.
*/
char name[64];
int type ;
d_open_t *open;
d_close_t *close;
d_read_t *read;
d_write_t *write;
d_ioctl_t *ioctl;
d_poll_t *poll;
seq_callback_t *callback;
/*
* combinations of the following flags are used as second argument in
* the callback from the dma module to the device-specific routines.
*/
#define SEQ_CB_RD 0x100 /* read callback */
#define SEQ_CB_WR 0x200 /* write callback */
#define SEQ_CB_REASON_MASK 0xff
#define SEQ_CB_START 0x01 /* start dma op */
#define SEQ_CB_STOP 0x03 /* stop dma op */
#define SEQ_CB_ABORT 0x04 /* abort dma op */
#define SEQ_CB_INIT 0x05 /* init board parameters */
/*
* callback extensions
*/
#define SEQ_CB_DMADONE 0x10
#define SEQ_CB_DMAUPDATE 0x11
#define SEQ_CB_DMASTOP 0x12
/* init can only be called with int enabled and
* no pending DMA activity.
*/
/*
* whereas from here, parameters are set at runtime.
* io_base == 0 means that the board is not configured.
*/
int unit; /* unit number of the device */
void *softc; /* softc for a device */
int bd_id ; /* used to hold board-id info, eg. sb version,
* mss codec type, etc. etc.
*/
struct mtx flagqueue_mtx; /* Mutex to protect flags and queues */
struct cv insync_cv; /* Conditional variable for sync */
/* Queues */
midi_dbuf midi_dbuf_in; /* midi input event/message queue */
midi_dbuf midi_dbuf_out; /* midi output event/message queue */
/*
* these parameters describe the operation of the board.
* Generic things like busy flag, speed, etc are here.
*/
/* Flags */
volatile u_long flags ; /* 32 bits, used for various purposes. */
/*
* we have separate flags for read and write, although in some
* cases this is probably not necessary (e.g. because we cannot
* know how many processes are using the device, we cannot
* distinguish if open, close, abort are for a write or for a
* read).
*/
/*
* the following flag is used by open-close routines
* to mark the status of the device.
*/
#define SEQ_F_BUSY 0x0001 /* has been opened */
/*
* the next two are used to allow only one pending operation of
* each type.
*/
#define SEQ_F_READING 0x0004 /* have a pending read */
#define SEQ_F_WRITING 0x0008 /* have a pending write */
/*
* flag used to mark a pending close.
*/
#define SEQ_F_CLOSING 0x0040 /* a pending close */
/*
* if user has not set block size, then make it adaptive
* (0.25s, or the perhaps last read/write ?)
*/
#define SEQ_F_HAS_SIZE 0x0080 /* user set block size */
/*
* assorted flags related to operating mode.
*/
#define SEQ_F_STEREO 0x0100 /* doing stereo */
#define SEQ_F_NBIO 0x0200 /* do non-blocking i/o */
/*
* these flags mark a pending abort on a r/w operation.
*/
#define SEQ_F_ABORTING 0x1000 /* a pending abort */
/*
* this is used to mark that board initialization is needed, e.g.
* because of a change in sampling rate, format, etc. -- It will
* be done at the next convenient time.
*/
#define SEQ_F_INIT 0x4000 /* changed parameters. need init */
#define SEQ_F_INSYNC 0x8000 /* a pending sync */
int play_blocksize, rec_blocksize; /* blocksize for io and dma ops */
#define swsel midi_dbuf_out.sel
#define srsel midi_dbuf_in.sel
u_long interrupts; /* counter of interrupts */
u_long magic;
#define MAGIC(unit) ( 0xa4d10de0 + unit )
void *device_data ; /* just in case it is needed...*/
/* The tailq entry of the next sequencer device. */
TAILQ_ENTRY(_seqdev_info) sd_link;
} ;
/*
* then ioctls and other stuff
*/
#define NSEQ_MAX 16 /* Number of supported devices */
/*
* many variables should be reduced to a range. Here define a macro
*/
#define RANGE(var, low, high) (var) = \
((var)<(low)?(low) : (var)>(high)?(high) : (var))
/*
* finally, all default parameters
*/
#define SEQ_BUFFSIZE (4 * 1024) /* XXX */
/*
* some macros for debugging purposes
* DDB/DEB to enable/disable debugging stuff
* BVDDB to enable debugging when bootverbose
*/
#define DDB(x) x /* XXX */
#define BVDDB(x) if (bootverbose) x
#ifndef DEB
#define DEB(x)
#endif
#define MIDI_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM
synthesizer and MIDI output) */
#endif /* _SEQUENCER_H_ */
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