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
235 lines
6.4 KiB
C
235 lines
6.4 KiB
C
/*
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* Include file for midi sequencer 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 _SEQUENCER_H_
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#define _SEQUENCER_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/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 <machine/clock.h> /* for DELAY */
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#include <sys/soundcard.h>
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#define SEQ_CDEV_MAJOR MIDI_CDEV_MAJOR
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/*
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* the following assumes that FreeBSD 3.X uses poll(2) instead of select(2).
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* This change dates to late 1997.
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*/
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#include <sys/poll.h>
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#define d_select_t d_poll_t
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typedef struct _seqdev_info seqdev_info;
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typedef int (seq_callback_t)(seqdev_info *sd, int reason);
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/*
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* descriptor of sequencer operations ...
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*
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*/
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struct _seqdev_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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seq_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 SEQ_CB_RD 0x100 /* read callback */
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#define SEQ_CB_WR 0x200 /* write callback */
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#define SEQ_CB_REASON_MASK 0xff
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#define SEQ_CB_START 0x01 /* start dma op */
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#define SEQ_CB_STOP 0x03 /* stop dma op */
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#define SEQ_CB_ABORT 0x04 /* abort dma op */
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#define SEQ_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 SEQ_CB_DMADONE 0x10
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#define SEQ_CB_DMAUPDATE 0x11
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#define SEQ_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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* io_base == 0 means that the board is not configured.
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*/
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int unit; /* unit number of the device */
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void *softc; /* softc for a 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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/*
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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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/*
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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 SEQ_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 SEQ_F_READING 0x0004 /* have a pending read */
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#define SEQ_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 SEQ_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 SEQ_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 SEQ_F_STEREO 0x0100 /* doing stereo */
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#define SEQ_F_NBIO 0x0200 /* do non-blocking i/o */
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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 SEQ_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 SEQ_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 swsel midi_dbuf_out.sel
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#define srsel 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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} ;
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/*
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* then ioctls and other stuff
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*/
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#define NSEQ_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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* finally, all default parameters
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*/
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#define SEQ_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 seqdev_info seq_info[NSEQ_MAX] ;
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#define MIDI_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM
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synthesizer and MIDI output) */
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#endif /* _SEQUENCER_H_ */
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