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/queue.h> 33 #include <sys/kernel.h> 34 #include <sys/lock.h> 35 #include <sys/proc.h> 36 #include <sys/systm.h> 37 #include <sys/kobj.h> 38 #include <sys/malloc.h> 39 #include <sys/bus.h> /* to get driver_intr_t */ 40 41 #ifdef HAVE_KERNEL_OPTION_HEADERS 42 #include "opt_snd.h" 43 #endif 44 45 #include <dev/sound/midi/mpu401.h> 46 #include <dev/sound/midi/midi.h> 47 48 #include "mpu_if.h" 49 #include "mpufoi_if.h" 50 51 #define MPU_DATAPORT 0 52 #define MPU_CMDPORT 1 53 #define MPU_STATPORT 1 54 #define MPU_RESET 0xff 55 #define MPU_UART 0x3f 56 #define MPU_ACK 0xfe 57 #define MPU_STATMASK 0xc0 58 #define MPU_OUTPUTBUSY 0x40 59 #define MPU_INPUTBUSY 0x80 60 #define MPU_TRYDATA 50 61 #define MPU_DELAY 2500 62 63 #define CMD(m,d) MPUFOI_WRITE(m, m->cookie, MPU_CMDPORT,d) 64 #define STATUS(m) MPUFOI_READ(m, m->cookie, MPU_STATPORT) 65 #define READ(m) MPUFOI_READ(m, m->cookie, MPU_DATAPORT) 66 #define WRITE(m,d) MPUFOI_WRITE(m, m->cookie, MPU_DATAPORT,d) 67 68 struct mpu401 { 69 KOBJ_FIELDS; 70 struct snd_midi *mid; 71 int flags; 72 driver_intr_t *si; 73 void *cookie; 74 struct callout timer; 75 }; 76 77 static void mpu401_timeout(void *m); 78 static mpu401_intr_t mpu401_intr; 79 80 static int mpu401_minit(struct snd_midi *, void *); 81 static int mpu401_muninit(struct snd_midi *, void *); 82 static int mpu401_minqsize(struct snd_midi *, void *); 83 static int mpu401_moutqsize(struct snd_midi *, void *); 84 static void mpu401_mcallback(struct snd_midi *, void *, int); 85 static void mpu401_mcallbackp(struct snd_midi *, void *, int); 86 static const char *mpu401_mdescr(struct snd_midi *, void *, int); 87 static const char *mpu401_mprovider(struct snd_midi *, void *); 88 89 static kobj_method_t mpu401_methods[] = { 90 KOBJMETHOD(mpu_init, mpu401_minit), 91 KOBJMETHOD(mpu_uninit, mpu401_muninit), 92 KOBJMETHOD(mpu_inqsize, mpu401_minqsize), 93 KOBJMETHOD(mpu_outqsize, mpu401_moutqsize), 94 KOBJMETHOD(mpu_callback, mpu401_mcallback), 95 KOBJMETHOD(mpu_callbackp, mpu401_mcallbackp), 96 KOBJMETHOD(mpu_descr, mpu401_mdescr), 97 KOBJMETHOD(mpu_provider, mpu401_mprovider), 98 KOBJMETHOD_END 99 }; 100 101 DEFINE_CLASS(mpu401, mpu401_methods, 0); 102 103 void 104 mpu401_timeout(void *a) 105 { 106 struct mpu401 *m = (struct mpu401 *)a; 107 108 if (m->si) 109 (m->si)(m->cookie); 110 111 } 112 static int 113 mpu401_intr(struct mpu401 *m) 114 { 115 #define MPU_INTR_BUF 16 116 MIDI_TYPE b[MPU_INTR_BUF]; 117 int i; 118 int s; 119 120 /* 121 kprintf("mpu401_intr\n"); 122 */ 123 #define RXRDY(m) ( (STATUS(m) & MPU_INPUTBUSY) == 0) 124 #define TXRDY(m) ( (STATUS(m) & MPU_OUTPUTBUSY) == 0) 125 #if 0 126 #define D(x,l) kprintf("mpu401_intr %d %x %s %s\n",l, x, x&MPU_INPUTBUSY?"RX":"", x&MPU_OUTPUTBUSY?"TX":"") 127 #else 128 #define D(x,l) 129 #endif 130 i = 0; 131 s = STATUS(m); 132 D(s, 1); 133 while ((s & MPU_INPUTBUSY) == 0 && i < MPU_INTR_BUF) { 134 b[i] = READ(m); 135 /* 136 kprintf("mpu401_intr in i %d d %d\n", i, b[i]); 137 */ 138 i++; 139 s = STATUS(m); 140 } 141 if (i) 142 midi_in(m->mid, b, i); 143 i = 0; 144 while (!(s & MPU_OUTPUTBUSY) && i < MPU_INTR_BUF) { 145 if (midi_out(m->mid, b, 1)) { 146 /* 147 kprintf("mpu401_intr out i %d d %d\n", i, b[0]); 148 */ 149 150 WRITE(m, *b); 151 } else { 152 /* 153 kprintf("mpu401_intr write: no output\n"); 154 */ 155 return 0; 156 } 157 i++; 158 /* DELAY(100); */ 159 s = STATUS(m); 160 } 161 162 if ((m->flags & M_TXEN) && (m->si)) { 163 callout_reset(&m->timer, 1, mpu401_timeout, m); 164 } 165 return (m->flags & M_TXEN) == M_TXEN; 166 } 167 168 struct mpu401 * 169 mpu401_init(kobj_class_t cls, void *cookie, driver_intr_t softintr, 170 mpu401_intr_t ** cb) 171 { 172 struct mpu401 *m; 173 174 *cb = NULL; 175 m = kmalloc(sizeof(*m), M_MIDI, M_WAITOK | M_ZERO); 176 177 kobj_init((kobj_t)m, cls); 178 179 callout_init_mp(&m->timer); 180 181 m->si = softintr; 182 m->cookie = cookie; 183 m->flags = 0; 184 185 m->mid = midi_init(&mpu401_class, 0, 0, m); 186 if (!m->mid) 187 goto err; 188 *cb = mpu401_intr; 189 return m; 190 err: 191 kprintf("mpu401_init error\n"); 192 kfree(m, M_MIDI); 193 return NULL; 194 } 195 196 int 197 mpu401_uninit(struct mpu401 *m) 198 { 199 int retval; 200 201 CMD(m, MPU_RESET); 202 retval = midi_uninit(m->mid); 203 if (retval) 204 return retval; 205 kfree(m, M_MIDI); 206 return 0; 207 } 208 209 static int 210 mpu401_minit(struct snd_midi *sm, void *arg) 211 { 212 struct mpu401 *m = arg; 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 kprintf("mpu401_minit failed active sensing\n"); 230 return 1; 231 } 232 233 234 int 235 mpu401_muninit(struct snd_midi *sm, void *arg) 236 { 237 struct mpu401 *m = arg; 238 239 return MPUFOI_UNINIT(m, m->cookie); 240 } 241 242 int 243 mpu401_minqsize(struct snd_midi *sm, void *arg) 244 { 245 return 128; 246 } 247 248 int 249 mpu401_moutqsize(struct snd_midi *sm, void *arg) 250 { 251 return 128; 252 } 253 254 static void 255 mpu401_mcallback(struct snd_midi *sm, void *arg, int flags) 256 { 257 struct mpu401 *m = arg; 258 #if 0 259 kprintf("mpu401_callback %s %s %s %s\n", 260 flags & M_RX ? "M_RX" : "", 261 flags & M_TX ? "M_TX" : "", 262 flags & M_RXEN ? "M_RXEN" : "", 263 flags & M_TXEN ? "M_TXEN" : ""); 264 #endif 265 if (flags & M_TXEN && m->si) { 266 callout_reset(&m->timer, 1, mpu401_timeout, m); 267 } 268 m->flags = flags; 269 } 270 271 static void 272 mpu401_mcallbackp(struct snd_midi *sm, void *arg, int flags) 273 { 274 /* kprintf("mpu401_callbackp\n"); */ 275 mpu401_mcallback(sm, arg, flags); 276 } 277 278 static const char * 279 mpu401_mdescr(struct snd_midi *sm, void *arg, int verbosity) 280 { 281 282 return "descr mpu401"; 283 } 284 285 static const char * 286 mpu401_mprovider(struct snd_midi *m, void *arg) 287 { 288 return "provider mpu401"; 289 } 290