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 { struct mpu401 *m=(struct mpu401 *)a; 104 105 if (m->si) 106 (m->si)(m->cookie); 107 108 } 109 static int 110 mpu401_intr(struct mpu401 *m) 111 { 112 #define MPU_INTR_BUF 16 113 MIDI_TYPE b[MPU_INTR_BUF]; 114 int i; 115 int s; 116 /* 117 printf("mpu401_intr\n"); 118 */ 119 #define RXRDY(m) ( (STATUS(m) & MPU_INPUTBUSY) == 0) 120 #define TXRDY(m) ( (STATUS(m) & MPU_OUTPUTBUSY) == 0) 121 #if 0 122 #define D(x,l) printf("mpu401_intr %d %x %s %s\n",l, x, x&MPU_INPUTBUSY?"RX":"", x&MPU_OUTPUTBUSY?"TX":"") 123 #else 124 #define D(x,l) 125 #endif 126 i=0; 127 s = STATUS(m); 128 D(s,1); 129 while ( (s&MPU_INPUTBUSY) == 0 && i<MPU_INTR_BUF) { 130 b[i]=READ(m); 131 /* 132 printf("mpu401_intr in i %d d %d\n", i, b[i]); 133 */ 134 i++; 135 s = STATUS(m); 136 } 137 if (i) midi_in(m->mid, b, i); 138 i=0; 139 while ( !(s&MPU_OUTPUTBUSY) && i<MPU_INTR_BUF) { 140 if(midi_out(m->mid, b, 1)) { 141 /* 142 printf("mpu401_intr out i %d d %d\n", i, b[0]); 143 */ 144 145 WRITE(m, *b); 146 } 147 else { 148 /* 149 printf("mpu401_intr write: no output\n"); 150 */ 151 return 0; 152 } 153 i++; 154 /* DELAY(100); */ 155 s = STATUS(m); 156 } 157 158 if ((m->flags & M_TXEN) && (m->si) ) { 159 callout_reset(&m->timer, 1, mpu401_timeout, m); 160 } 161 162 return (m->flags & M_TXEN) == M_TXEN; 163 } 164 165 struct mpu401 * 166 mpu401_init(kobj_class_t cls, void *cookie,driver_intr_t softintr, mpu401_intr_t **cb) 167 { 168 struct mpu401 *m; 169 170 *cb = NULL; 171 m = malloc(sizeof(*m), M_MIDI, M_NOWAIT | M_ZERO); 172 173 if(!m) 174 return NULL; 175 176 kobj_init((kobj_t)m, cls); 177 178 callout_init(&m->timer, 1); 179 180 m->si = softintr; 181 m->cookie = cookie; 182 m->flags = 0; 183 184 m->mid = midi_init(&mpu401_class,0,0,m); 185 if (!m->mid) 186 goto err; 187 *cb = mpu401_intr; 188 return m; 189 err: 190 printf("mpu401_init error\n"); 191 free(m, M_MIDI); 192 return NULL; 193 } 194 195 int 196 mpu401_uninit(struct mpu401 *m) 197 { 198 int retval; 199 200 CMD(m, MPU_RESET); 201 retval = midi_uninit(m->mid); 202 if (retval) 203 return retval; 204 free(m, M_MIDI); 205 return 0; 206 } 207 208 static int 209 mpu401_minit(kobj_t obj, struct mpu401 *m) 210 { 211 int i; 212 213 CMD(m, MPU_RESET); 214 CMD(m, MPU_UART); 215 return 0; 216 i=0; 217 while(++i<2000) { 218 if(RXRDY(m)) 219 if(READ(m) == MPU_ACK) 220 break; 221 } 222 223 if( i < 2000 ) { 224 CMD(m, MPU_UART); 225 return 0; 226 } 227 printf("mpu401_minit failed active sensing\n"); 228 return 1; 229 } 230 231 232 int 233 mpu401_muninit(kobj_t obj, struct mpu401 *m) 234 { 235 236 return MPUFOI_UNINIT(m, m->cookie); 237 } 238 239 int 240 mpu401_minqsize(kobj_t obj, struct mpu401 *m) 241 { 242 return 128; 243 } 244 245 int 246 mpu401_moutqsize(kobj_t obj, struct mpu401 *m) 247 { 248 return 128; 249 } 250 251 static void 252 mpu401_mcallback(kobj_t obj, struct mpu401 *m, int flags) 253 { 254 #if 0 255 printf("mpu401_callback %s %s %s %s\n", 256 flags & M_RX ? "M_RX" : "", 257 flags & M_TX ? "M_TX" : "", 258 flags & M_RXEN ? "M_RXEN" : "", 259 flags & M_TXEN ? "M_TXEN" : "" ); 260 #endif 261 if (flags & M_TXEN && m->si) { 262 callout_reset(&m->timer, 1, mpu401_timeout, m); 263 } 264 265 m->flags = flags; 266 } 267 268 static void 269 mpu401_mcallbackp(kobj_t obj, struct mpu401 *m, int flags) 270 { 271 /* printf("mpu401_callbackp\n"); */ 272 mpu401_mcallback(obj, m, flags); 273 } 274 275 static const char * 276 mpu401_mdescr(kobj_t obj, struct mpu401 *m, int verbosity) 277 { 278 279 return "descr mpu401"; 280 } 281 282 static const char * 283 mpu401_mprovider(kobj_t obj, struct mpu401 *m) 284 { 285 return "provider mpu401"; 286 } 287