1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 #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 #ifdef HAVE_KERNEL_OPTION_HEADERS 44 #include "opt_snd.h" 45 #endif 46 47 #include <dev/sound/midi/mpu401.h> 48 #include <dev/sound/midi/midi.h> 49 50 #include "mpu_if.h" 51 #include "mpufoi_if.h" 52 53 #ifndef KOBJMETHOD_END 54 #define KOBJMETHOD_END { NULL, NULL } 55 #endif 56 57 #define MPU_DATAPORT 0 58 #define MPU_CMDPORT 1 59 #define MPU_STATPORT 1 60 #define MPU_RESET 0xff 61 #define MPU_UART 0x3f 62 #define MPU_ACK 0xfe 63 #define MPU_STATMASK 0xc0 64 #define MPU_OUTPUTBUSY 0x40 65 #define MPU_INPUTBUSY 0x80 66 #define MPU_TRYDATA 50 67 #define MPU_DELAY 2500 68 69 #define CMD(m,d) MPUFOI_WRITE(m, m->cookie, MPU_CMDPORT,d) 70 #define STATUS(m) MPUFOI_READ(m, m->cookie, MPU_STATPORT) 71 #define READ(m) MPUFOI_READ(m, m->cookie, MPU_DATAPORT) 72 #define WRITE(m,d) MPUFOI_WRITE(m, m->cookie, MPU_DATAPORT,d) 73 74 struct mpu401 { 75 KOBJ_FIELDS; 76 struct snd_midi *mid; 77 int flags; 78 driver_intr_t *si; 79 void *cookie; 80 struct callout timer; 81 }; 82 83 static void mpu401_timeout(void *m); 84 static mpu401_intr_t mpu401_intr; 85 86 static int mpu401_minit(struct snd_midi *, void *); 87 static int mpu401_muninit(struct snd_midi *, void *); 88 static int mpu401_minqsize(struct snd_midi *, void *); 89 static int mpu401_moutqsize(struct snd_midi *, void *); 90 static void mpu401_mcallback(struct snd_midi *, void *, int); 91 static void mpu401_mcallbackp(struct snd_midi *, void *, int); 92 static const char *mpu401_mdescr(struct snd_midi *, void *, int); 93 static const char *mpu401_mprovider(struct snd_midi *, void *); 94 95 static kobj_method_t mpu401_methods[] = { 96 KOBJMETHOD(mpu_init, mpu401_minit), 97 KOBJMETHOD(mpu_uninit, mpu401_muninit), 98 KOBJMETHOD(mpu_inqsize, mpu401_minqsize), 99 KOBJMETHOD(mpu_outqsize, mpu401_moutqsize), 100 KOBJMETHOD(mpu_callback, mpu401_mcallback), 101 KOBJMETHOD(mpu_callbackp, mpu401_mcallbackp), 102 KOBJMETHOD(mpu_descr, mpu401_mdescr), 103 KOBJMETHOD(mpu_provider, mpu401_mprovider), 104 KOBJMETHOD_END 105 }; 106 107 DEFINE_CLASS(mpu401, mpu401_methods, 0); 108 109 void 110 mpu401_timeout(void *a) 111 { 112 struct mpu401 *m = (struct mpu401 *)a; 113 114 if (m->si) 115 (m->si)(m->cookie); 116 117 } 118 static int 119 mpu401_intr(struct mpu401 *m) 120 { 121 #define MPU_INTR_BUF 16 122 MIDI_TYPE b[MPU_INTR_BUF]; 123 int i; 124 int s; 125 126 /* 127 printf("mpu401_intr\n"); 128 */ 129 #define RXRDY(m) ( (STATUS(m) & MPU_INPUTBUSY) == 0) 130 #define TXRDY(m) ( (STATUS(m) & MPU_OUTPUTBUSY) == 0) 131 #if 0 132 #define D(x,l) printf("mpu401_intr %d %x %s %s\n",l, x, x&MPU_INPUTBUSY?"RX":"", x&MPU_OUTPUTBUSY?"TX":"") 133 #else 134 #define D(x,l) 135 #endif 136 i = 0; 137 s = STATUS(m); 138 D(s, 1); 139 while ((s & MPU_INPUTBUSY) == 0 && i < MPU_INTR_BUF) { 140 b[i] = READ(m); 141 /* 142 printf("mpu401_intr in i %d d %d\n", i, b[i]); 143 */ 144 i++; 145 s = STATUS(m); 146 } 147 if (i) 148 midi_in(m->mid, b, i); 149 i = 0; 150 while (!(s & MPU_OUTPUTBUSY) && i < MPU_INTR_BUF) { 151 if (midi_out(m->mid, b, 1)) { 152 /* 153 printf("mpu401_intr out i %d d %d\n", i, b[0]); 154 */ 155 156 WRITE(m, *b); 157 } else { 158 /* 159 printf("mpu401_intr write: no output\n"); 160 */ 161 return 0; 162 } 163 i++; 164 /* DELAY(100); */ 165 s = STATUS(m); 166 } 167 168 if ((m->flags & M_TXEN) && (m->si)) { 169 callout_reset(&m->timer, 1, mpu401_timeout, m); 170 } 171 return (m->flags & M_TXEN) == M_TXEN; 172 } 173 174 struct mpu401 * 175 mpu401_init(kobj_class_t cls, void *cookie, driver_intr_t softintr, 176 mpu401_intr_t ** cb) 177 { 178 struct mpu401 *m; 179 180 *cb = NULL; 181 m = malloc(sizeof(*m), M_MIDI, M_NOWAIT | M_ZERO); 182 183 if (!m) 184 return NULL; 185 186 kobj_init((kobj_t)m, cls); 187 188 callout_init(&m->timer, 1); 189 190 m->si = softintr; 191 m->cookie = cookie; 192 m->flags = 0; 193 194 m->mid = midi_init(&mpu401_class, 0, 0, m); 195 if (!m->mid) 196 goto err; 197 *cb = mpu401_intr; 198 return m; 199 err: 200 printf("mpu401_init error\n"); 201 free(m, M_MIDI); 202 return NULL; 203 } 204 205 int 206 mpu401_uninit(struct mpu401 *m) 207 { 208 int retval; 209 210 CMD(m, MPU_RESET); 211 retval = midi_uninit(m->mid); 212 if (retval) 213 return retval; 214 free(m, M_MIDI); 215 return 0; 216 } 217 218 static int 219 mpu401_minit(struct snd_midi *sm, void *arg) 220 { 221 struct mpu401 *m = arg; 222 int i; 223 224 CMD(m, MPU_RESET); 225 CMD(m, MPU_UART); 226 return 0; 227 i = 0; 228 while (++i < 2000) { 229 if (RXRDY(m)) 230 if (READ(m) == MPU_ACK) 231 break; 232 } 233 234 if (i < 2000) { 235 CMD(m, MPU_UART); 236 return 0; 237 } 238 printf("mpu401_minit failed active sensing\n"); 239 return 1; 240 } 241 242 int 243 mpu401_muninit(struct snd_midi *sm, void *arg) 244 { 245 struct mpu401 *m = arg; 246 247 return MPUFOI_UNINIT(m, m->cookie); 248 } 249 250 int 251 mpu401_minqsize(struct snd_midi *sm, void *arg) 252 { 253 return 128; 254 } 255 256 int 257 mpu401_moutqsize(struct snd_midi *sm, void *arg) 258 { 259 return 128; 260 } 261 262 static void 263 mpu401_mcallback(struct snd_midi *sm, void *arg, int flags) 264 { 265 struct mpu401 *m = arg; 266 #if 0 267 printf("mpu401_callback %s %s %s %s\n", 268 flags & M_RX ? "M_RX" : "", 269 flags & M_TX ? "M_TX" : "", 270 flags & M_RXEN ? "M_RXEN" : "", 271 flags & M_TXEN ? "M_TXEN" : ""); 272 #endif 273 if (flags & M_TXEN && m->si) { 274 callout_reset(&m->timer, 1, mpu401_timeout, m); 275 } 276 m->flags = flags; 277 } 278 279 static void 280 mpu401_mcallbackp(struct snd_midi *sm, void *arg, int flags) 281 { 282 /* printf("mpu401_callbackp\n"); */ 283 mpu401_mcallback(sm, arg, flags); 284 } 285 286 static const char * 287 mpu401_mdescr(struct snd_midi *sm, void *arg, int verbosity) 288 { 289 290 return "descr mpu401"; 291 } 292 293 static const char * 294 mpu401_mprovider(struct snd_midi *m, void *arg) 295 { 296 return "provider mpu401"; 297 } 298