/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2003 Mathew Kanner
* All rights reserved.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/kobj.h>
#include <sys/malloc.h>
#include <sys/bus.h> /* to get driver_intr_t */
#ifdef HAVE_KERNEL_OPTION_HEADERS
#include "opt_snd.h"
#endif
#include <dev/sound/midi/mpu401.h>
#include <dev/sound/midi/midi.h>
#include "mpu_if.h"
#include "mpufoi_if.h"
#ifndef KOBJMETHOD_END
#define KOBJMETHOD_END { NULL, NULL }
#endif
#define MPU_DATAPORT 0
#define MPU_CMDPORT 1
#define MPU_STATPORT 1
#define MPU_RESET 0xff
#define MPU_UART 0x3f
#define MPU_ACK 0xfe
#define MPU_STATMASK 0xc0
#define MPU_OUTPUTBUSY 0x40
#define MPU_INPUTBUSY 0x80
#define MPU_TRYDATA 50
#define MPU_DELAY 2500
#define CMD(m,d) MPUFOI_WRITE(m, m->cookie, MPU_CMDPORT,d)
#define STATUS(m) MPUFOI_READ(m, m->cookie, MPU_STATPORT)
#define READ(m) MPUFOI_READ(m, m->cookie, MPU_DATAPORT)
#define WRITE(m,d) MPUFOI_WRITE(m, m->cookie, MPU_DATAPORT,d)
struct mpu401 {
KOBJ_FIELDS;
struct snd_midi *mid;
int flags;
driver_intr_t *si;
void *cookie;
struct callout timer;
};
static void mpu401_timeout(void *m);
static mpu401_intr_t mpu401_intr;
static int mpu401_minit(struct snd_midi *, void *);
static int mpu401_muninit(struct snd_midi *, void *);
static int mpu401_minqsize(struct snd_midi *, void *);
static int mpu401_moutqsize(struct snd_midi *, void *);
static void mpu401_mcallback(struct snd_midi *, void *, int);
static void mpu401_mcallbackp(struct snd_midi *, void *, int);
static const char *mpu401_mdescr(struct snd_midi *, void *, int);
static const char *mpu401_mprovider(struct snd_midi *, void *);
static kobj_method_t mpu401_methods[] = {
KOBJMETHOD(mpu_init, mpu401_minit),
KOBJMETHOD(mpu_uninit, mpu401_muninit),
KOBJMETHOD(mpu_inqsize, mpu401_minqsize),
KOBJMETHOD(mpu_outqsize, mpu401_moutqsize),
KOBJMETHOD(mpu_callback, mpu401_mcallback),
KOBJMETHOD(mpu_callbackp, mpu401_mcallbackp),
KOBJMETHOD(mpu_descr, mpu401_mdescr),
KOBJMETHOD(mpu_provider, mpu401_mprovider),
KOBJMETHOD_END
};
DEFINE_CLASS(mpu401, mpu401_methods, 0);
void
mpu401_timeout(void *a)
{
struct mpu401 *m = (struct mpu401 *)a;
if (m->si)
(m->si)(m->cookie);
}
static int
mpu401_intr(struct mpu401 *m)
{
#define MPU_INTR_BUF 16
MIDI_TYPE b[MPU_INTR_BUF];
int i;
int s;
/*
printf("mpu401_intr\n");
*/
#define RXRDY(m) ( (STATUS(m) & MPU_INPUTBUSY) == 0)
#define TXRDY(m) ( (STATUS(m) & MPU_OUTPUTBUSY) == 0)
#if 0
#define D(x,l) printf("mpu401_intr %d %x %s %s\n",l, x, x&MPU_INPUTBUSY?"RX":"", x&MPU_OUTPUTBUSY?"TX":"")
#else
#define D(x,l)
#endif
i = 0;
s = STATUS(m);
D(s, 1);
while ((s & MPU_INPUTBUSY) == 0 && i < MPU_INTR_BUF) {
b[i] = READ(m);
/*
printf("mpu401_intr in i %d d %d\n", i, b[i]);
*/
i++;
s = STATUS(m);
}
if (i)
midi_in(m->mid, b, i);
i = 0;
while (!(s & MPU_OUTPUTBUSY) && i < MPU_INTR_BUF) {
if (midi_out(m->mid, b, 1)) {
/*
printf("mpu401_intr out i %d d %d\n", i, b[0]);
*/
WRITE(m, *b);
} else {
/*
printf("mpu401_intr write: no output\n");
*/
return 0;
}
i++;
/* DELAY(100); */
s = STATUS(m);
}
if ((m->flags & M_TXEN) && (m->si)) {
callout_reset(&m->timer, 1, mpu401_timeout, m);
}
return (m->flags & M_TXEN) == M_TXEN;
}
struct mpu401 *
mpu401_init(kobj_class_t cls, void *cookie, driver_intr_t softintr,
mpu401_intr_t ** cb)
{
struct mpu401 *m;
*cb = NULL;
m = malloc(sizeof(*m), M_MIDI, M_NOWAIT | M_ZERO);
if (!m)
return NULL;
kobj_init((kobj_t)m, cls);
callout_init(&m->timer, 1);
m->si = softintr;
m->cookie = cookie;
m->flags = 0;
m->mid = midi_init(&mpu401_class, 0, 0, m);
if (!m->mid)
goto err;
*cb = mpu401_intr;
return m;
err:
printf("mpu401_init error\n");
free(m, M_MIDI);
return NULL;
}
int
mpu401_uninit(struct mpu401 *m)
{
int retval;
CMD(m, MPU_RESET);
retval = midi_uninit(m->mid);
if (retval)
return retval;
free(m, M_MIDI);
return 0;
}
static int
mpu401_minit(struct snd_midi *sm, void *arg)
{
struct mpu401 *m = arg;
int i;
CMD(m, MPU_RESET);
CMD(m, MPU_UART);
return 0;
i = 0;
while (++i < 2000) {
if (RXRDY(m))
if (READ(m) == MPU_ACK)
break;
}
if (i < 2000) {
CMD(m, MPU_UART);
return 0;
}
printf("mpu401_minit failed active sensing\n");
return 1;
}
int
mpu401_muninit(struct snd_midi *sm, void *arg)
{
struct mpu401 *m = arg;
return MPUFOI_UNINIT(m, m->cookie);
}
int
mpu401_minqsize(struct snd_midi *sm, void *arg)
{
return 128;
}
int
mpu401_moutqsize(struct snd_midi *sm, void *arg)
{
return 128;
}
static void
mpu401_mcallback(struct snd_midi *sm, void *arg, int flags)
{
struct mpu401 *m = arg;
#if 0
printf("mpu401_callback %s %s %s %s\n",
flags & M_RX ? "M_RX" : "",
flags & M_TX ? "M_TX" : "",
flags & M_RXEN ? "M_RXEN" : "",
flags & M_TXEN ? "M_TXEN" : "");
#endif
if (flags & M_TXEN && m->si) {
callout_reset(&m->timer, 1, mpu401_timeout, m);
}
m->flags = flags;
}
static void
mpu401_mcallbackp(struct snd_midi *sm, void *arg, int flags)
{
/* printf("mpu401_callbackp\n"); */
mpu401_mcallback(sm, arg, flags);
}
static const char *
mpu401_mdescr(struct snd_midi *sm, void *arg, int verbosity)
{
return "descr mpu401";
}
static const char *
mpu401_mprovider(struct snd_midi *m, void *arg)
{
return "provider mpu401";
}
