48351eaf73
/usr/share/examples/etc/bsd-style-copyright. I've fixed a few minor wording and formatting differences. Approved by: matk, Hannu Savolainen <hannu@opensound.com> Reviewed by: imp
287 lines
6.4 KiB
C
287 lines
6.4 KiB
C
/*-
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* Copyright (c) 2003 Mathew Kanner
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* All rights reserved.
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/kobj.h>
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#include <sys/malloc.h>
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#include <sys/bus.h> /* to get driver_intr_t */
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#include <dev/sound/midi/mpu401.h>
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#include <dev/sound/midi/midi.h>
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#include "mpu_if.h"
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#include "mpufoi_if.h"
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#define MPU_DATAPORT 0
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#define MPU_CMDPORT 1
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#define MPU_STATPORT 1
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#define MPU_RESET 0xff
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#define MPU_UART 0x3f
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#define MPU_ACK 0xfe
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#define MPU_STATMASK 0xc0
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#define MPU_OUTPUTBUSY 0x40
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#define MPU_INPUTBUSY 0x80
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#define MPU_TRYDATA 50
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#define MPU_DELAY 2500
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#define CMD(m,d) MPUFOI_WRITE(m, m->cookie, MPU_CMDPORT,d)
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#define STATUS(m) MPUFOI_READ(m, m->cookie, MPU_STATPORT)
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#define READ(m) MPUFOI_READ(m, m->cookie, MPU_DATAPORT)
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#define WRITE(m,d) MPUFOI_WRITE(m, m->cookie, MPU_DATAPORT,d)
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struct mpu401 {
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KOBJ_FIELDS;
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struct snd_midi *mid;
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int flags;
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driver_intr_t *si;
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void *cookie;
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struct callout timer;
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};
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static void mpu401_timeout(void *m) ;
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static mpu401_intr_t mpu401_intr;
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static int mpu401_minit(kobj_t obj, struct mpu401 *m);
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static int mpu401_muninit(kobj_t obj, struct mpu401 *m);
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static int mpu401_minqsize(kobj_t obj, struct mpu401 *m);
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static int mpu401_moutqsize(kobj_t obj, struct mpu401 *m);
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static void mpu401_mcallback(kobj_t obj, struct mpu401 *m, int flags);
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static void mpu401_mcallbackp(kobj_t obj, struct mpu401 *m, int flags);
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static const char *mpu401_mdescr(kobj_t obj, struct mpu401 *m, int verbosity);
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static const char *mpu401_mprovider(kobj_t obj, struct mpu401 *m);
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static kobj_method_t mpu401_methods[] = {
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KOBJMETHOD(mpu_init,mpu401_minit),
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KOBJMETHOD(mpu_uninit,mpu401_muninit),
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KOBJMETHOD(mpu_inqsize,mpu401_minqsize),
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KOBJMETHOD(mpu_outqsize,mpu401_moutqsize),
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KOBJMETHOD(mpu_callback,mpu401_mcallback),
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KOBJMETHOD(mpu_callbackp,mpu401_mcallbackp),
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KOBJMETHOD(mpu_descr,mpu401_mdescr),
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KOBJMETHOD(mpu_provider,mpu401_mprovider),
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{ 0, 0 }
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};
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DEFINE_CLASS(mpu401, mpu401_methods, 0);
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void
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mpu401_timeout(void *a)
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{ struct mpu401 *m=(struct mpu401 *)a;
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if (m->si)
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(m->si)(m->cookie);
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}
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static int
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mpu401_intr(struct mpu401 *m)
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{
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#define MPU_INTR_BUF 16
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MIDI_TYPE b[MPU_INTR_BUF];
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int i;
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int s;
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/*
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printf("mpu401_intr\n");
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*/
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#define RXRDY(m) ( (STATUS(m) & MPU_INPUTBUSY) == 0)
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#define TXRDY(m) ( (STATUS(m) & MPU_OUTPUTBUSY) == 0)
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#if 0
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#define D(x,l) printf("mpu401_intr %d %x %s %s\n",l, x, x&MPU_INPUTBUSY?"RX":"", x&MPU_OUTPUTBUSY?"TX":"")
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#else
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#define D(x,l)
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#endif
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i=0;
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s = STATUS(m);
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D(s,1);
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while ( (s&MPU_INPUTBUSY) == 0 && i<MPU_INTR_BUF) {
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b[i]=READ(m);
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/*
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printf("mpu401_intr in i %d d %d\n", i, b[i]);
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*/
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i++;
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s = STATUS(m);
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}
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if (i) midi_in(m->mid, b, i);
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i=0;
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while ( !(s&MPU_OUTPUTBUSY) && i<MPU_INTR_BUF) {
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if(midi_out(m->mid, b, 1)) {
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/*
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printf("mpu401_intr out i %d d %d\n", i, b[0]);
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*/
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WRITE(m, *b);
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}
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else {
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/*
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printf("mpu401_intr write: no output\n");
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*/
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return 0;
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}
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i++;
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/* DELAY(100); */
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s = STATUS(m);
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}
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if ((m->flags & M_TXEN) && (m->si) ) {
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callout_reset(&m->timer, 1, mpu401_timeout, m);
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}
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return (m->flags & M_TXEN) == M_TXEN;
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}
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struct mpu401 *
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mpu401_init(kobj_class_t cls, void *cookie,driver_intr_t softintr, mpu401_intr_t **cb)
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{
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struct mpu401 *m;
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*cb = NULL;
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m = malloc(sizeof(*m), M_MIDI, M_NOWAIT | M_ZERO);
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if(!m)
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return NULL;
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kobj_init((kobj_t)m, cls);
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callout_init(&m->timer, 1);
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m->si = softintr;
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m->cookie = cookie;
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m->flags = 0;
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m->mid = midi_init(&mpu401_class,0,0,m);
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if (!m->mid)
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goto err;
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*cb = mpu401_intr;
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return m;
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err:
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printf("mpu401_init error\n");
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free(m, M_MIDI);
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return NULL;
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}
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int
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mpu401_uninit(struct mpu401 *m)
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{
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int retval;
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CMD(m, MPU_RESET);
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retval = midi_uninit(m->mid);
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if (retval)
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return retval;
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free(m, M_MIDI);
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return 0;
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}
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static int
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mpu401_minit(kobj_t obj, struct mpu401 *m)
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{
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int i;
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CMD(m, MPU_RESET);
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CMD(m, MPU_UART);
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return 0;
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i=0;
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while(++i<2000) {
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if(RXRDY(m))
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if(READ(m) == MPU_ACK)
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break;
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}
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if( i < 2000 ) {
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CMD(m, MPU_UART);
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return 0;
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}
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printf("mpu401_minit failed active sensing\n");
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return 1;
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}
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int
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mpu401_muninit(kobj_t obj, struct mpu401 *m)
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{
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return MPUFOI_UNINIT(m, m->cookie);
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}
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int
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mpu401_minqsize(kobj_t obj, struct mpu401 *m)
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{
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return 128;
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}
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int
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mpu401_moutqsize(kobj_t obj, struct mpu401 *m)
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{
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return 128;
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}
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static void
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mpu401_mcallback(kobj_t obj, struct mpu401 *m, int flags)
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{
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#if 0
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printf("mpu401_callback %s %s %s %s\n",
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flags & M_RX ? "M_RX" : "",
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flags & M_TX ? "M_TX" : "",
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flags & M_RXEN ? "M_RXEN" : "",
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flags & M_TXEN ? "M_TXEN" : "" );
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#endif
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if (flags & M_TXEN && m->si) {
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callout_reset(&m->timer, 1, mpu401_timeout, m);
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}
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m->flags = flags;
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}
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static void
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mpu401_mcallbackp(kobj_t obj, struct mpu401 *m, int flags)
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{
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/* printf("mpu401_callbackp\n"); */
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mpu401_mcallback(obj, m, flags);
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}
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static const char *
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mpu401_mdescr(kobj_t obj, struct mpu401 *m, int verbosity)
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{
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return "descr mpu401";
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}
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static const char *
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mpu401_mprovider(kobj_t obj, struct mpu401 *m)
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{
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return "provider mpu401";
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}
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