fb0ef52838
(I had been busy for my own research activity until the last weekend) Supported devices: SB Midi Port (sbc + midi) SB OPL3 (sbc + midi) 16550 UART (midi, needs a trick in your hint) CS461x Midi Port (csa + midi) OSS-compatible sequencer (seq) Supported playing software: playmidi (We definitely need more) Notes: /dev/midistat now reports installed midi drivers. /dev/sndstat reports only pcm drivers. We need the new name(pcmstat?). EMU8000(SB AWE) does not sound yet but does get probed so that the OPL3 synth on an AWE card works. TODO: MSS/PCI bridge drivers Midi-tty interface to support general serial devices Modules
295 lines
8.0 KiB
C
295 lines
8.0 KiB
C
/*
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* Include file for midi driver.
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*
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* Copyright by Seigo Tanimura 1999.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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/*
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* first, include kernel header files.
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*/
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#ifndef _MIDI_H_
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#define _MIDI_H_
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/ioccom.h>
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#include <sys/filio.h>
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#include <sys/sockio.h>
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#include <sys/fcntl.h>
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#include <sys/tty.h>
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#include <sys/proc.h>
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#include <sys/kernel.h> /* for DATA_SET */
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#include <sys/module.h>
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#include <sys/conf.h>
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#include <sys/file.h>
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#include <sys/uio.h>
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#include <sys/syslog.h>
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#include <sys/errno.h>
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#include <sys/malloc.h>
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#include <sys/bus.h>
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#include <machine/clock.h> /* for DELAY */
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#include <machine/resource.h>
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#include <machine/bus_memio.h>
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#include <machine/bus_pio.h>
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#include <machine/bus.h>
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#include <machine/clock.h> /* for DELAY */
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#include <sys/soundcard.h>
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#include <sys/rman.h>
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#include <sys/mman.h>
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#include <sys/poll.h>
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#include <dev/sound/midi/miditypes.h>
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#include <dev/sound/midi/midibuf.h>
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#include <dev/sound/midi/midisynth.h>
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#define MIDI_CDEV_MAJOR 30
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/*
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* descriptor of midi operations ...
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*
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*/
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struct _mididev_info {
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/*
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* the first part of the descriptor is filled up from a
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* template.
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*/
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char name[64];
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int type;
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d_open_t *open;
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d_close_t *close;
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d_read_t *read;
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d_write_t *write;
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d_ioctl_t *ioctl;
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d_poll_t *poll;
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midi_callback_t *callback;
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/*
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* combinations of the following flags are used as second argument in
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* the callback from the dma module to the device-specific routines.
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*/
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#define MIDI_CB_RD 0x100 /* read callback */
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#define MIDI_CB_WR 0x200 /* write callback */
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#define MIDI_CB_REASON_MASK 0xff
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#define MIDI_CB_START 0x01 /* start dma op */
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#define MIDI_CB_STOP 0x03 /* stop dma op */
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#define MIDI_CB_ABORT 0x04 /* abort dma op */
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#define MIDI_CB_INIT 0x05 /* init board parameters */
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/*
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* callback extensions
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*/
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#define MIDI_CB_DMADONE 0x10
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#define MIDI_CB_DMAUPDATE 0x11
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#define MIDI_CB_DMASTOP 0x12
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/* init can only be called with int enabled and
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* no pending DMA activity.
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*/
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/*
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* whereas from here, parameters are set at runtime.
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* resources are stored in the softc of the device,
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* not in the common structure.
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*/
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int unit; /* unit number of the device */
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void *softc; /* softc for the device */
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device_t dev; /* device_t for the device */
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int bd_id ; /* used to hold board-id info, eg. sb version,
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* mss codec type, etc. etc.
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*/
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midi_dbuf midi_dbuf_in; /* midi input event/message queue */
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midi_dbuf midi_dbuf_out; /* midi output event/message queue */
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midi_dbuf midi_dbuf_passthru; /* midi passthru event/message queue */
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/*
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* these parameters describe the operation of the board.
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* Generic things like busy flag, speed, etc are here.
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*/
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volatile u_long flags ; /* 32 bits, used for various purposes. */
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int fflags; /* file flag */
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/*
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* we have separate flags for read and write, although in some
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* cases this is probably not necessary (e.g. because we cannot
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* know how many processes are using the device, we cannot
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* distinguish if open, close, abort are for a write or for a
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* read).
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*/
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/*
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* the following flag is used by open-close routines
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* to mark the status of the device.
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*/
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#define MIDI_F_BUSY 0x0001 /* has been opened */
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/*
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* the next two are used to allow only one pending operation of
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* each type.
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*/
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#define MIDI_F_READING 0x0004 /* have a pending read */
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#define MIDI_F_WRITING 0x0008 /* have a pending write */
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/*
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* flag used to mark a pending close.
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*/
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#define MIDI_F_CLOSING 0x0040 /* a pending close */
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/*
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* if user has not set block size, then make it adaptive
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* (0.25s, or the perhaps last read/write ?)
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*/
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#define MIDI_F_HAS_SIZE 0x0080 /* user set block size */
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/*
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* assorted flags related to operating mode.
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*/
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#define MIDI_F_STEREO 0x0100 /* doing stereo */
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#define MIDI_F_NBIO 0x0200 /* do non-blocking i/o */
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#define MIDI_F_PASSTHRU 0x0400 /* pass received data to output port */
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/*
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* these flags mark a pending abort on a r/w operation.
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*/
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#define MIDI_F_ABORTING 0x1000 /* a pending abort */
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/*
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* this is used to mark that board initialization is needed, e.g.
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* because of a change in sampling rate, format, etc. -- It will
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* be done at the next convenient time.
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*/
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#define MIDI_F_INIT 0x4000 /* changed parameters. need init */
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int play_blocksize, rec_blocksize; /* blocksize for io and dma ops */
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#define mwsel midi_dbuf_out.sel
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#define mrsel midi_dbuf_in.sel
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u_long interrupts; /* counter of interrupts */
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u_long magic;
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#define MAGIC(unit) ( 0xa4d10de0 + unit )
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void *device_data ; /* just in case it is needed...*/
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midi_intr_t *intr; /* interrupt handler of the upper layer (ie sequencer) */
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void *intrarg; /* argument to interrupt handler */
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/* The following is the interface from a midi sequencer to a midi device. */
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synthdev_info synth;
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/* This is the status message to display via /dev/midistat */
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char midistat[128];
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} ;
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/*
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* then ioctls and other stuff
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*/
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#define NMIDI_MAX 64 /* Number of supported devices */
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/*
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* many variables should be reduced to a range. Here define a macro
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*/
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#define RANGE(var, low, high) (var) = \
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((var)<(low)?(low) : (var)>(high)?(high) : (var))
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/*
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* convert dev_t to unit and dev
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*/
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#define MIDIMINOR(x) (minor(x))
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#define MIDIUNIT(x) ((MIDIMINOR(x) & 0x000000f0) >> 4)
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#define MIDIDEV(x) (MIDIMINOR(x) & 0x0000000f)
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#define MIDIMKMINOR(u, d) (((u) & 0x0f) << 4 | ((d) & 0x0f))
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#define MIDIMKDEV(m, u, d) (makedev((m), MIDIMKMINOR((u), (d))))
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/*
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* see if the device is configured
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*/
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#define MIDICONFED(x) ((x)->ioctl != NULL)
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/*
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* finally, all default parameters
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*/
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#define MIDI_BUFFSIZE (4 * 1024) /* XXX */
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/*
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* some macros for debugging purposes
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* DDB/DEB to enable/disable debugging stuff
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* BVDDB to enable debugging when bootverbose
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*/
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#define DDB(x) x /* XXX */
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#define BVDDB(x) if (bootverbose) x
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#ifndef DEB
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#define DEB(x)
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#endif
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extern mididev_info midi_info[NMIDI_MAX];
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extern u_long nmidi;
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extern u_long nsynth;
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/* This is the generic midi drvier initializer. */
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int midiinit(mididev_info *d, device_t dev);
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/* This provides an access to the mididev_info. */
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mididev_info *get_mididev_info(dev_t i_dev, int *unit);
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/* These are the generic methods for a midi driver. */
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d_open_t midi_open;
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d_close_t midi_close;
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d_ioctl_t midi_ioctl;
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d_read_t midi_read;
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d_write_t midi_write;
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d_poll_t midi_poll;
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/* Common interrupt handler */
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void midi_intr(mididev_info *);
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/*
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* library functions (in midi.c)
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*/
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#define splmidi() spltty()
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/*
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* Minor numbers for the midi driver.
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*/
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#define MIDI_DEV_MIDIN 2 /* Raw midi access */
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#define MIDI_DEV_STATUS 11 /* /dev/midistat */
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#endif /* _MIDI_H_ */
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