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("$FreeBSD$"); 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 66 struct 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 75 static void mpu401_timeout(void *m); 76 static mpu401_intr_t mpu401_intr; 77 78 static int mpu401_minit(kobj_t obj, struct mpu401 *m); 79 static int mpu401_muninit(kobj_t obj, struct mpu401 *m); 80 static int mpu401_minqsize(kobj_t obj, struct mpu401 *m); 81 static int mpu401_moutqsize(kobj_t obj, struct mpu401 *m); 82 static void mpu401_mcallback(kobj_t obj, struct mpu401 *m, int flags); 83 static void mpu401_mcallbackp(kobj_t obj, struct mpu401 *m, int flags); 84 static const char *mpu401_mdescr(kobj_t obj, struct mpu401 *m, int verbosity); 85 static const char *mpu401_mprovider(kobj_t obj, struct mpu401 *m); 86 87 static 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 99 DEFINE_CLASS(mpu401, mpu401_methods, 0); 100 101 void 102 mpu401_timeout(void *a) 103 { 104 struct mpu401 *m = (struct mpu401 *)a; 105 106 if (m->si) 107 (m->si)(m->cookie); 108 109 } 110 static int 111 mpu401_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 } 165 166 struct mpu401 * 167 mpu401_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, 1); 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; 191 err: 192 printf("mpu401_init error\n"); 193 free(m, M_MIDI); 194 return NULL; 195 } 196 197 int 198 mpu401_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 } 209 210 static int 211 mpu401_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 } 232 233 234 int 235 mpu401_muninit(kobj_t obj, struct mpu401 *m) 236 { 237 238 return MPUFOI_UNINIT(m, m->cookie); 239 } 240 241 int 242 mpu401_minqsize(kobj_t obj, struct mpu401 *m) 243 { 244 return 128; 245 } 246 247 int 248 mpu401_moutqsize(kobj_t obj, struct mpu401 *m) 249 { 250 return 128; 251 } 252 253 static void 254 mpu401_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 } 268 269 static void 270 mpu401_mcallbackp(kobj_t obj, struct mpu401 *m, int flags) 271 { 272 /* printf("mpu401_callbackp\n"); */ 273 mpu401_mcallback(obj, m, flags); 274 } 275 276 static const char * 277 mpu401_mdescr(kobj_t obj, struct mpu401 *m, int verbosity) 278 { 279 280 return "descr mpu401"; 281 } 282 283 static const char * 284 mpu401_mprovider(kobj_t obj, struct mpu401 *m) 285 { 286 return "provider mpu401"; 287 } 288