mpu401.c revision 178250
1/*- 2 * Copyright (c) 2003 Mathew Kanner 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/dev/sound/midi/mpu401.c 178250 2008-04-16 16:47:14Z kris $"); 29 30#include <sys/param.h> 31#include <sys/types.h> 32#include <sys/param.h> 33#include <sys/queue.h> 34#include <sys/kernel.h> 35#include <sys/lock.h> 36#include <sys/mutex.h> 37#include <sys/proc.h> 38#include <sys/systm.h> 39#include <sys/kobj.h> 40#include <sys/malloc.h> 41#include <sys/bus.h> /* to get driver_intr_t */ 42 43#include <dev/sound/midi/mpu401.h> 44#include <dev/sound/midi/midi.h> 45 46#include "mpu_if.h" 47#include "mpufoi_if.h" 48 49#define MPU_DATAPORT 0 50#define MPU_CMDPORT 1 51#define MPU_STATPORT 1 52#define MPU_RESET 0xff 53#define MPU_UART 0x3f 54#define MPU_ACK 0xfe 55#define MPU_STATMASK 0xc0 56#define MPU_OUTPUTBUSY 0x40 57#define MPU_INPUTBUSY 0x80 58#define MPU_TRYDATA 50 59#define MPU_DELAY 2500 60 61#define CMD(m,d) MPUFOI_WRITE(m, m->cookie, MPU_CMDPORT,d) 62#define STATUS(m) MPUFOI_READ(m, m->cookie, MPU_STATPORT) 63#define READ(m) MPUFOI_READ(m, m->cookie, MPU_DATAPORT) 64#define WRITE(m,d) MPUFOI_WRITE(m, m->cookie, MPU_DATAPORT,d) 65 66struct mpu401 { 67 KOBJ_FIELDS; 68 struct snd_midi *mid; 69 int flags; 70 driver_intr_t *si; 71 void *cookie; 72 struct callout timer; 73}; 74 75static void mpu401_timeout(void *m); 76static mpu401_intr_t mpu401_intr; 77 78static int mpu401_minit(kobj_t obj, struct mpu401 *m); 79static int mpu401_muninit(kobj_t obj, struct mpu401 *m); 80static int mpu401_minqsize(kobj_t obj, struct mpu401 *m); 81static int mpu401_moutqsize(kobj_t obj, struct mpu401 *m); 82static void mpu401_mcallback(kobj_t obj, struct mpu401 *m, int flags); 83static void mpu401_mcallbackp(kobj_t obj, struct mpu401 *m, int flags); 84static const char *mpu401_mdescr(kobj_t obj, struct mpu401 *m, int verbosity); 85static const char *mpu401_mprovider(kobj_t obj, struct mpu401 *m); 86 87static kobj_method_t mpu401_methods[] = { 88 KOBJMETHOD(mpu_init, mpu401_minit), 89 KOBJMETHOD(mpu_uninit, mpu401_muninit), 90 KOBJMETHOD(mpu_inqsize, mpu401_minqsize), 91 KOBJMETHOD(mpu_outqsize, mpu401_moutqsize), 92 KOBJMETHOD(mpu_callback, mpu401_mcallback), 93 KOBJMETHOD(mpu_callbackp, mpu401_mcallbackp), 94 KOBJMETHOD(mpu_descr, mpu401_mdescr), 95 KOBJMETHOD(mpu_provider, mpu401_mprovider), 96 {0, 0} 97}; 98 99DEFINE_CLASS(mpu401, mpu401_methods, 0); 100 101void 102mpu401_timeout(void *a) 103{ 104 struct mpu401 *m = (struct mpu401 *)a; 105 106 if (m->si) 107 (m->si)(m->cookie); 108 109} 110static int 111mpu401_intr(struct mpu401 *m) 112{ 113#define MPU_INTR_BUF 16 114 MIDI_TYPE b[MPU_INTR_BUF]; 115 int i; 116 int s; 117 118/* 119 printf("mpu401_intr\n"); 120*/ 121#define RXRDY(m) ( (STATUS(m) & MPU_INPUTBUSY) == 0) 122#define TXRDY(m) ( (STATUS(m) & MPU_OUTPUTBUSY) == 0) 123#if 0 124#define D(x,l) printf("mpu401_intr %d %x %s %s\n",l, x, x&MPU_INPUTBUSY?"RX":"", x&MPU_OUTPUTBUSY?"TX":"") 125#else 126#define D(x,l) 127#endif 128 i = 0; 129 s = STATUS(m); 130 D(s, 1); 131 while ((s & MPU_INPUTBUSY) == 0 && i < MPU_INTR_BUF) { 132 b[i] = READ(m); 133/* 134 printf("mpu401_intr in i %d d %d\n", i, b[i]); 135*/ 136 i++; 137 s = STATUS(m); 138 } 139 if (i) 140 midi_in(m->mid, b, i); 141 i = 0; 142 while (!(s & MPU_OUTPUTBUSY) && i < MPU_INTR_BUF) { 143 if (midi_out(m->mid, b, 1)) { 144/* 145 printf("mpu401_intr out i %d d %d\n", i, b[0]); 146*/ 147 148 WRITE(m, *b); 149 } else { 150/* 151 printf("mpu401_intr write: no output\n"); 152*/ 153 return 0; 154 } 155 i++; 156 /* DELAY(100); */ 157 s = STATUS(m); 158 } 159 160 if ((m->flags & M_TXEN) && (m->si)) { 161 callout_reset(&m->timer, 1, mpu401_timeout, m); 162 } 163 return (m->flags & M_TXEN) == M_TXEN; 164} 165 166struct mpu401 * 167mpu401_init(kobj_class_t cls, void *cookie, driver_intr_t softintr, 168 mpu401_intr_t ** cb) 169{ 170 struct mpu401 *m; 171 172 *cb = NULL; 173 m = malloc(sizeof(*m), M_MIDI, M_NOWAIT | M_ZERO); 174 175 if (!m) 176 return NULL; 177 178 kobj_init((kobj_t)m, cls); 179 180 callout_init(&m->timer, CALLOUT_MPSAFE); 181 182 m->si = softintr; 183 m->cookie = cookie; 184 m->flags = 0; 185 186 m->mid = midi_init(&mpu401_class, 0, 0, m); 187 if (!m->mid) 188 goto err; 189 *cb = mpu401_intr; 190 return m; 191err: 192 printf("mpu401_init error\n"); 193 free(m, M_MIDI); 194 return NULL; 195} 196 197int 198mpu401_uninit(struct mpu401 *m) 199{ 200 int retval; 201 202 CMD(m, MPU_RESET); 203 retval = midi_uninit(m->mid); 204 if (retval) 205 return retval; 206 free(m, M_MIDI); 207 return 0; 208} 209 210static int 211mpu401_minit(kobj_t obj, struct mpu401 *m) 212{ 213 int i; 214 215 CMD(m, MPU_RESET); 216 CMD(m, MPU_UART); 217 return 0; 218 i = 0; 219 while (++i < 2000) { 220 if (RXRDY(m)) 221 if (READ(m) == MPU_ACK) 222 break; 223 } 224 225 if (i < 2000) { 226 CMD(m, MPU_UART); 227 return 0; 228 } 229 printf("mpu401_minit failed active sensing\n"); 230 return 1; 231} 232 233 234int 235mpu401_muninit(kobj_t obj, struct mpu401 *m) 236{ 237 238 return MPUFOI_UNINIT(m, m->cookie); 239} 240 241int 242mpu401_minqsize(kobj_t obj, struct mpu401 *m) 243{ 244 return 128; 245} 246 247int 248mpu401_moutqsize(kobj_t obj, struct mpu401 *m) 249{ 250 return 128; 251} 252 253static void 254mpu401_mcallback(kobj_t obj, struct mpu401 *m, int flags) 255{ 256#if 0 257 printf("mpu401_callback %s %s %s %s\n", 258 flags & M_RX ? "M_RX" : "", 259 flags & M_TX ? "M_TX" : "", 260 flags & M_RXEN ? "M_RXEN" : "", 261 flags & M_TXEN ? "M_TXEN" : ""); 262#endif 263 if (flags & M_TXEN && m->si) { 264 callout_reset(&m->timer, 1, mpu401_timeout, m); 265 } 266 m->flags = flags; 267} 268 269static void 270mpu401_mcallbackp(kobj_t obj, struct mpu401 *m, int flags) 271{ 272/* printf("mpu401_callbackp\n"); */ 273 mpu401_mcallback(obj, m, flags); 274} 275 276static const char * 277mpu401_mdescr(kobj_t obj, struct mpu401 *m, int verbosity) 278{ 279 280 return "descr mpu401"; 281} 282 283static const char * 284mpu401_mprovider(kobj_t obj, struct mpu401 *m) 285{ 286 return "provider mpu401"; 287} 288