freebsd-dev/sys/dev/sound/midi/midi.h
Alexander Kabaev 104a9b7e3e Deprecate machine/limits.h in favor of new sys/limits.h.
Change all in-tree consumers to include <sys/limits.h>

Discussed on:	standards@
Partially submitted by: Craig Rodrigues <rodrigc@attbi.com>
2003-04-29 13:36:06 +00:00

335 lines
9.1 KiB
C

/*
* Include file for midi 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 _MIDI_H_
#define _MIDI_H_
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioccom.h>
#include <sys/filio.h>
#include <sys/lock.h>
#include <sys/sockio.h>
#include <sys/fcntl.h>
#include <sys/tty.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <sys/kernel.h> /* for DATA_SET */
#include <sys/module.h>
#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/bus.h>
#include <machine/resource.h>
#include <machine/bus_memio.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/clock.h> /* for DELAY */
#include <sys/limits.h>
#include <sys/soundcard.h>
#include <sys/rman.h>
#include <sys/mman.h>
#include <sys/poll.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <dev/sound/midi/miditypes.h>
#include <dev/sound/midi/midibuf.h>
#include <dev/sound/midi/midisynth.h>
#define MIDI_CDEV_MAJOR 30
/*#define MIDI_OUTOFGIANT*/
/*
* 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 midi operations ...
*
*/
struct _mididev_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_ioctl_t *ioctl;
midi_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 MIDI_CB_RD 0x100 /* read callback */
#define MIDI_CB_WR 0x200 /* write callback */
#define MIDI_CB_REASON_MASK 0xff
#define MIDI_CB_START 0x01 /* start dma op */
#define MIDI_CB_STOP 0x03 /* stop dma op */
#define MIDI_CB_ABORT 0x04 /* abort dma op */
#define MIDI_CB_INIT 0x05 /* init board parameters */
/*
* callback extensions
*/
#define MIDI_CB_DMADONE 0x10
#define MIDI_CB_DMAUPDATE 0x11
#define MIDI_CB_DMASTOP 0x12
/* init can only be called with int enabled and
* no pending DMA activity.
*/
/*
* whereas from here, parameters are set at runtime.
* resources are stored in the softc of the device,
* not in the common structure.
*/
int unit; /* unit number of the device */
int midiunit; /* unit number for midi devices */
int synthunit; /* unit number for synth devices */
int mdtype; /* MDT_MIDI or MDT_SYNTH */
void *softc; /* softc for the device */
device_t dev; /* device_t for the 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 */
/* Queues */
midi_dbuf midi_dbuf_in; /* midi input event/message queue */
midi_dbuf midi_dbuf_out; /* midi output event/message queue */
midi_dbuf midi_dbuf_passthru; /* midi passthru 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. */
int fflags; /* file flag */
/*
* 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 MIDI_F_BUSY 0x0001 /* has been opened */
/*
* the next two are used to allow only one pending operation of
* each type.
*/
#define MIDI_F_READING 0x0004 /* have a pending read */
#define MIDI_F_WRITING 0x0008 /* have a pending write */
/*
* flag used to mark a pending close.
*/
#define MIDI_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 MIDI_F_HAS_SIZE 0x0080 /* user set block size */
/*
* assorted flags related to operating mode.
*/
#define MIDI_F_STEREO 0x0100 /* doing stereo */
#define MIDI_F_NBIO 0x0200 /* do non-blocking i/o */
#define MIDI_F_PASSTHRU 0x0400 /* pass received data to output port */
/*
* these flags mark a pending abort on a r/w operation.
*/
#define MIDI_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 MIDI_F_INIT 0x4000 /* changed parameters. need init */
int play_blocksize, rec_blocksize; /* blocksize for io and dma ops */
#define mwsel midi_dbuf_out.sel
#define mrsel midi_dbuf_in.sel
u_long nterrupts; /* counter of interrupts */
u_long magic;
#define MAGIC(unit) ( 0xa4d10de0 + unit )
void *device_data ; /* just in case it is needed...*/
midi_intr_t *intr; /* interrupt handler of the upper layer (ie sequencer) */
void *intrarg; /* argument to interrupt handler */
/* The following is the interface from a midi sequencer to a midi device. */
synthdev_info synth;
/* This is the status message to display via /dev/midistat */
char midistat[128];
/* The tailq entry of the next midi device. */
TAILQ_ENTRY(_mididev_info) md_link;
/* The tailq entry of the next midi device opened by a sequencer. */
TAILQ_ENTRY(_mididev_info) md_linkseq;
} ;
/*
* then ioctls and other stuff
*/
#define NMIDI_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))
/*
* convert dev_t to unit and dev
*/
#define MIDIMINOR(x) (minor(x))
#define MIDIUNIT(x) ((MIDIMINOR(x) & 0x000000f0) >> 4)
#define MIDIDEV(x) (MIDIMINOR(x) & 0x0000000f)
#define MIDIMKMINOR(u, d) (((u) & 0x0f) << 4 | ((d) & 0x0f))
#define MIDIMKDEV(m, u, d) (makedev((m), MIDIMKMINOR((u), (d))))
/*
* see if the device is configured
*/
#define MIDICONFED(x) ((x)->ioctl != NULL)
/*
* finally, all default parameters
*/
#define MIDI_BUFFSIZE (1024) /* XXX */
#ifdef _KERNEL
/* This is the generic midi drvier initializer. */
int midiinit(mididev_info *d, device_t dev);
/* This provides an access to the mididev_info. */
mididev_info *get_mididev_info(dev_t i_dev, int *unit);
mididev_info *get_mididev_info_unit(int unit);
mididev_info *get_mididev_midi_unit(int unit);
mididev_info *get_mididev_synth_unit(int unit);
mididev_info *create_mididev_info_unit(int type, mididev_info *mdinf, synthdev_info *syninf);
int mididev_info_number(void);
int mididev_midi_number(void);
int mididev_synth_number(void);
#define MDT_MIDI (0)
#define MDT_SYNTH (1)
/* These are the generic methods for a midi driver. */
d_open_t midi_open;
d_close_t midi_close;
d_ioctl_t midi_ioctl;
d_read_t midi_read;
d_write_t midi_write;
d_poll_t midi_poll;
/* Common interrupt handler */
void midi_intr(mididev_info *);
/* Sync output */
int midi_sync(mididev_info *);
struct _midi_cmdtab {
int cmd;
char * name;
};
typedef struct _midi_cmdtab midi_cmdtab;
char *midi_cmdname(int cmd, midi_cmdtab *tab);
SYSCTL_DECL(_hw_midi);
extern int midi_debug;
#define MIDI_DEBUG(x) \
do { \
if (midi_debug) { \
(x); \
} \
} while(0)
extern midi_cmdtab cmdtab_midiioctl[];
#endif /* _KERNEL */
/*
* Minor numbers for the midi driver.
*/
#define MIDI_DEV_MIDIN 2 /* Raw midi access */
#define MIDI_DEV_STATUS 15 /* /dev/midistat */
#endif /* _MIDI_H_ */