1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2003 Mathew Kanner 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/types.h> 34 #include <sys/param.h> 35 #include <sys/queue.h> 36 #include <sys/kernel.h> 37 #include <sys/lock.h> 38 #include <sys/mutex.h> 39 #include <sys/proc.h> 40 #include <sys/systm.h> 41 #include <sys/kobj.h> 42 #include <sys/malloc.h> 43 #include <sys/bus.h> /* to get driver_intr_t */ 44 45 #ifdef HAVE_KERNEL_OPTION_HEADERS 46 #include "opt_snd.h" 47 #endif 48 49 #include <dev/sound/midi/mpu401.h> 50 #include <dev/sound/midi/midi.h> 51 52 #include "mpu_if.h" 53 #include "mpufoi_if.h" 54 55 #ifndef KOBJMETHOD_END 56 #define KOBJMETHOD_END { NULL, NULL } 57 #endif 58 59 #define MPU_DATAPORT 0 60 #define MPU_CMDPORT 1 61 #define MPU_STATPORT 1 62 #define MPU_RESET 0xff 63 #define MPU_UART 0x3f 64 #define MPU_ACK 0xfe 65 #define MPU_STATMASK 0xc0 66 #define MPU_OUTPUTBUSY 0x40 67 #define MPU_INPUTBUSY 0x80 68 #define MPU_TRYDATA 50 69 #define MPU_DELAY 2500 70 71 #define CMD(m,d) MPUFOI_WRITE(m, m->cookie, MPU_CMDPORT,d) 72 #define STATUS(m) MPUFOI_READ(m, m->cookie, MPU_STATPORT) 73 #define READ(m) MPUFOI_READ(m, m->cookie, MPU_DATAPORT) 74 #define WRITE(m,d) MPUFOI_WRITE(m, m->cookie, MPU_DATAPORT,d) 75 76 struct mpu401 { 77 KOBJ_FIELDS; 78 struct snd_midi *mid; 79 int flags; 80 driver_intr_t *si; 81 void *cookie; 82 struct callout timer; 83 }; 84 85 static void mpu401_timeout(void *m); 86 static mpu401_intr_t mpu401_intr; 87 88 static int mpu401_minit(struct snd_midi *, void *); 89 static int mpu401_muninit(struct snd_midi *, void *); 90 static int mpu401_minqsize(struct snd_midi *, void *); 91 static int mpu401_moutqsize(struct snd_midi *, void *); 92 static void mpu401_mcallback(struct snd_midi *, void *, int); 93 static void mpu401_mcallbackp(struct snd_midi *, void *, int); 94 static const char *mpu401_mdescr(struct snd_midi *, void *, int); 95 static const char *mpu401_mprovider(struct snd_midi *, void *); 96 97 static kobj_method_t mpu401_methods[] = { 98 KOBJMETHOD(mpu_init, mpu401_minit), 99 KOBJMETHOD(mpu_uninit, mpu401_muninit), 100 KOBJMETHOD(mpu_inqsize, mpu401_minqsize), 101 KOBJMETHOD(mpu_outqsize, mpu401_moutqsize), 102 KOBJMETHOD(mpu_callback, mpu401_mcallback), 103 KOBJMETHOD(mpu_callbackp, mpu401_mcallbackp), 104 KOBJMETHOD(mpu_descr, mpu401_mdescr), 105 KOBJMETHOD(mpu_provider, mpu401_mprovider), 106 KOBJMETHOD_END 107 }; 108 109 DEFINE_CLASS(mpu401, mpu401_methods, 0); 110 111 void 112 mpu401_timeout(void *a) 113 { 114 struct mpu401 *m = (struct mpu401 *)a; 115 116 if (m->si) 117 (m->si)(m->cookie); 118 119 } 120 static int 121 mpu401_intr(struct mpu401 *m) 122 { 123 #define MPU_INTR_BUF 16 124 MIDI_TYPE b[MPU_INTR_BUF]; 125 int i; 126 int s; 127 128 /* 129 printf("mpu401_intr\n"); 130 */ 131 #define RXRDY(m) ( (STATUS(m) & MPU_INPUTBUSY) == 0) 132 #define TXRDY(m) ( (STATUS(m) & MPU_OUTPUTBUSY) == 0) 133 #if 0 134 #define D(x,l) printf("mpu401_intr %d %x %s %s\n",l, x, x&MPU_INPUTBUSY?"RX":"", x&MPU_OUTPUTBUSY?"TX":"") 135 #else 136 #define D(x,l) 137 #endif 138 i = 0; 139 s = STATUS(m); 140 D(s, 1); 141 while ((s & MPU_INPUTBUSY) == 0 && i < MPU_INTR_BUF) { 142 b[i] = READ(m); 143 /* 144 printf("mpu401_intr in i %d d %d\n", i, b[i]); 145 */ 146 i++; 147 s = STATUS(m); 148 } 149 if (i) 150 midi_in(m->mid, b, i); 151 i = 0; 152 while (!(s & MPU_OUTPUTBUSY) && i < MPU_INTR_BUF) { 153 if (midi_out(m->mid, b, 1)) { 154 /* 155 printf("mpu401_intr out i %d d %d\n", i, b[0]); 156 */ 157 158 WRITE(m, *b); 159 } else { 160 /* 161 printf("mpu401_intr write: no output\n"); 162 */ 163 return 0; 164 } 165 i++; 166 /* DELAY(100); */ 167 s = STATUS(m); 168 } 169 170 if ((m->flags & M_TXEN) && (m->si)) { 171 callout_reset(&m->timer, 1, mpu401_timeout, m); 172 } 173 return (m->flags & M_TXEN) == M_TXEN; 174 } 175 176 struct mpu401 * 177 mpu401_init(kobj_class_t cls, void *cookie, driver_intr_t softintr, 178 mpu401_intr_t ** cb) 179 { 180 struct mpu401 *m; 181 182 *cb = NULL; 183 m = malloc(sizeof(*m), M_MIDI, M_NOWAIT | M_ZERO); 184 185 if (!m) 186 return NULL; 187 188 kobj_init((kobj_t)m, cls); 189 190 callout_init(&m->timer, 1); 191 192 m->si = softintr; 193 m->cookie = cookie; 194 m->flags = 0; 195 196 m->mid = midi_init(&mpu401_class, 0, 0, m); 197 if (!m->mid) 198 goto err; 199 *cb = mpu401_intr; 200 return m; 201 err: 202 printf("mpu401_init error\n"); 203 free(m, M_MIDI); 204 return NULL; 205 } 206 207 int 208 mpu401_uninit(struct mpu401 *m) 209 { 210 int retval; 211 212 CMD(m, MPU_RESET); 213 retval = midi_uninit(m->mid); 214 if (retval) 215 return retval; 216 free(m, M_MIDI); 217 return 0; 218 } 219 220 static int 221 mpu401_minit(struct snd_midi *sm, void *arg) 222 { 223 struct mpu401 *m = arg; 224 int i; 225 226 CMD(m, MPU_RESET); 227 CMD(m, MPU_UART); 228 return 0; 229 i = 0; 230 while (++i < 2000) { 231 if (RXRDY(m)) 232 if (READ(m) == MPU_ACK) 233 break; 234 } 235 236 if (i < 2000) { 237 CMD(m, MPU_UART); 238 return 0; 239 } 240 printf("mpu401_minit failed active sensing\n"); 241 return 1; 242 } 243 244 int 245 mpu401_muninit(struct snd_midi *sm, void *arg) 246 { 247 struct mpu401 *m = arg; 248 249 return MPUFOI_UNINIT(m, m->cookie); 250 } 251 252 int 253 mpu401_minqsize(struct snd_midi *sm, void *arg) 254 { 255 return 128; 256 } 257 258 int 259 mpu401_moutqsize(struct snd_midi *sm, void *arg) 260 { 261 return 128; 262 } 263 264 static void 265 mpu401_mcallback(struct snd_midi *sm, void *arg, int flags) 266 { 267 struct mpu401 *m = arg; 268 #if 0 269 printf("mpu401_callback %s %s %s %s\n", 270 flags & M_RX ? "M_RX" : "", 271 flags & M_TX ? "M_TX" : "", 272 flags & M_RXEN ? "M_RXEN" : "", 273 flags & M_TXEN ? "M_TXEN" : ""); 274 #endif 275 if (flags & M_TXEN && m->si) { 276 callout_reset(&m->timer, 1, mpu401_timeout, m); 277 } 278 m->flags = flags; 279 } 280 281 static void 282 mpu401_mcallbackp(struct snd_midi *sm, void *arg, int flags) 283 { 284 /* printf("mpu401_callbackp\n"); */ 285 mpu401_mcallback(sm, arg, flags); 286 } 287 288 static const char * 289 mpu401_mdescr(struct snd_midi *sm, void *arg, int verbosity) 290 { 291 292 return "descr mpu401"; 293 } 294 295 static const char * 296 mpu401_mprovider(struct snd_midi *m, void *arg) 297 { 298 return "provider mpu401"; 299 } 300