718cf2ccb9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
301 lines
6.7 KiB
C
301 lines
6.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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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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#ifdef HAVE_KERNEL_OPTION_HEADERS
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#include "opt_snd.h"
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#endif
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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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#ifndef KOBJMETHOD_END
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#define KOBJMETHOD_END { NULL, NULL }
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#endif
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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(struct snd_midi *, void *);
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static int mpu401_muninit(struct snd_midi *, void *);
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static int mpu401_minqsize(struct snd_midi *, void *);
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static int mpu401_moutqsize(struct snd_midi *, void *);
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static void mpu401_mcallback(struct snd_midi *, void *, int);
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static void mpu401_mcallbackp(struct snd_midi *, void *, int);
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static const char *mpu401_mdescr(struct snd_midi *, void *, int);
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static const char *mpu401_mprovider(struct snd_midi *, void *);
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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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KOBJMETHOD_END
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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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{
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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)
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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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} 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,
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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(struct snd_midi *sm, void *arg)
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{
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struct mpu401 *m = arg;
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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(struct snd_midi *sm, void *arg)
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{
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struct mpu401 *m = arg;
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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(struct snd_midi *sm, void *arg)
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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(struct snd_midi *sm, void *arg)
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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(struct snd_midi *sm, void *arg, int flags)
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{
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struct mpu401 *m = arg;
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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(struct snd_midi *sm, void *arg, int flags)
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{
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/* printf("mpu401_callbackp\n"); */
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mpu401_mcallback(sm, arg, flags);
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}
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static const char *
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mpu401_mdescr(struct snd_midi *sm, void *arg, 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(struct snd_midi *m, void *arg)
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{
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return "provider mpu401";
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}
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