/*- * SPDX-License-Identifier: BSD-2-Clause * * 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 #include #include #include #include #include #include #include #include #include #include #include /* to get driver_intr_t */ #ifdef HAVE_KERNEL_OPTION_HEADERS #include "opt_snd.h" #endif #include #include #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 uint8_t 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"; }