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 193979 2009-06-11 09:06:09Z ariff $"); 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 #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 kprintf("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) kprintf("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 kprintf("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 kprintf("mpu401_intr out i %d d %d\n", i, b[0]); 154 */ 155 156 WRITE(m, *b); 157 } else { 158 /* 159 kprintf("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 = kmalloc(sizeof(*m), M_MIDI, M_WAITOK | M_ZERO); 182 183 kobj_init((kobj_t)m, cls); 184 185 callout_init_mp(&m->timer); 186 187 m->si = softintr; 188 m->cookie = cookie; 189 m->flags = 0; 190 191 m->mid = midi_init(&mpu401_class, 0, 0, m); 192 if (!m->mid) 193 goto err; 194 *cb = mpu401_intr; 195 return m; 196 err: 197 kprintf("mpu401_init error\n"); 198 kfree(m, M_MIDI); 199 return NULL; 200 } 201 202 int 203 mpu401_uninit(struct mpu401 *m) 204 { 205 int retval; 206 207 CMD(m, MPU_RESET); 208 retval = midi_uninit(m->mid); 209 if (retval) 210 return retval; 211 kfree(m, M_MIDI); 212 return 0; 213 } 214 215 static int 216 mpu401_minit(struct snd_midi *sm, void *arg) 217 { 218 struct mpu401 *m = arg; 219 int i; 220 221 CMD(m, MPU_RESET); 222 CMD(m, MPU_UART); 223 return 0; 224 i = 0; 225 while (++i < 2000) { 226 if (RXRDY(m)) 227 if (READ(m) == MPU_ACK) 228 break; 229 } 230 231 if (i < 2000) { 232 CMD(m, MPU_UART); 233 return 0; 234 } 235 kprintf("mpu401_minit failed active sensing\n"); 236 return 1; 237 } 238 239 240 int 241 mpu401_muninit(struct snd_midi *sm, void *arg) 242 { 243 struct mpu401 *m = arg; 244 245 return MPUFOI_UNINIT(m, m->cookie); 246 } 247 248 int 249 mpu401_minqsize(struct snd_midi *sm, void *arg) 250 { 251 return 128; 252 } 253 254 int 255 mpu401_moutqsize(struct snd_midi *sm, void *arg) 256 { 257 return 128; 258 } 259 260 static void 261 mpu401_mcallback(struct snd_midi *sm, void *arg, int flags) 262 { 263 struct mpu401 *m = arg; 264 #if 0 265 kprintf("mpu401_callback %s %s %s %s\n", 266 flags & M_RX ? "M_RX" : "", 267 flags & M_TX ? "M_TX" : "", 268 flags & M_RXEN ? "M_RXEN" : "", 269 flags & M_TXEN ? "M_TXEN" : ""); 270 #endif 271 if (flags & M_TXEN && m->si) { 272 callout_reset(&m->timer, 1, mpu401_timeout, m); 273 } 274 m->flags = flags; 275 } 276 277 static void 278 mpu401_mcallbackp(struct snd_midi *sm, void *arg, int flags) 279 { 280 /* kprintf("mpu401_callbackp\n"); */ 281 mpu401_mcallback(sm, arg, flags); 282 } 283 284 static const char * 285 mpu401_mdescr(struct snd_midi *sm, void *arg, int verbosity) 286 { 287 288 return "descr mpu401"; 289 } 290 291 static const char * 292 mpu401_mprovider(struct snd_midi *m, void *arg) 293 { 294 return "provider mpu401"; 295 } 296