1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> 5 * Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006 6 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 struct pcmchan_caps { 32 u_int32_t minspeed, maxspeed; 33 u_int32_t *fmtlist; 34 u_int32_t caps; 35 }; 36 37 struct pcmchan_matrix { 38 int id; 39 uint8_t channels, ext; 40 struct { 41 int type; 42 uint32_t members; 43 } map[SND_CHN_T_MAX + 1]; 44 uint32_t mask; 45 int8_t offset[SND_CHN_T_MAX]; 46 }; 47 48 /* Forward declarations */ 49 struct pcm_channel; 50 struct pcmchan_syncgroup; 51 struct pcmchan_syncmember; 52 53 extern struct mtx snd_pcm_syncgroups_mtx; 54 extern SLIST_HEAD(pcm_synclist, pcmchan_syncgroup) snd_pcm_syncgroups; 55 56 #define PCM_SG_LOCK() mtx_lock(&snd_pcm_syncgroups_mtx) 57 #define PCM_SG_TRYLOCK() mtx_trylock(&snd_pcm_syncgroups_mtx) 58 #define PCM_SG_UNLOCK() mtx_unlock(&snd_pcm_syncgroups_mtx) 59 #define PCM_SG_LOCKASSERT(arg) mtx_assert(&snd_pcm_syncgroups_mtx, arg) 60 61 /** 62 * @brief Specifies an audio device sync group 63 */ 64 struct pcmchan_syncgroup { 65 SLIST_ENTRY(pcmchan_syncgroup) link; 66 SLIST_HEAD(, pcmchan_syncmember) members; 67 int id; /**< Group identifier; set to address of group. */ 68 }; 69 70 /** 71 * @brief Specifies a container for members of a sync group 72 */ 73 struct pcmchan_syncmember { 74 SLIST_ENTRY(pcmchan_syncmember) link; 75 struct pcmchan_syncgroup *parent; /**< group head */ 76 struct pcm_channel *ch; 77 }; 78 79 #define CHN_NAMELEN 32 80 #define CHN_COMM_UNUSED "<UNUSED>" 81 #define CHN_COMM_UNKNOWN "<UNKNOWN>" 82 83 struct pcm_channel { 84 kobj_t methods; 85 86 pid_t pid; 87 struct pcm_feeder *feeder; 88 u_int32_t align; 89 90 int latency; 91 u_int32_t speed; 92 u_int32_t format; 93 u_int32_t flags; 94 u_int32_t feederflags; 95 u_int64_t blocks; 96 97 int direction; 98 unsigned int interrupts, xruns, feedcount; 99 unsigned int timeout; 100 struct snd_dbuf *bufhard, *bufsoft; 101 struct snddev_info *parentsnddev; 102 struct pcm_channel *parentchannel; 103 void *devinfo; 104 device_t dev; 105 int unit; 106 int type; 107 char name[CHN_NAMELEN]; 108 char comm[MAXCOMLEN + 1]; 109 struct mtx *lock; 110 int trigger; 111 /** 112 * For interrupt manipulations. 113 */ 114 struct cv intr_cv; 115 /** 116 * Increment,decrement this around operations that temporarily yield 117 * lock. 118 */ 119 unsigned int inprog; 120 /* Incrememnt/decrement around cv_timedwait_sig() in chn_sleep(). */ 121 unsigned int sleeping; 122 /** 123 * Special channel operations should examine @c inprog after acquiring 124 * lock. If zero, operations may continue. Else, thread should 125 * wait on this cv for previous operation to finish. 126 */ 127 struct cv cv; 128 /** 129 * Low water mark for select()/poll(). 130 * 131 * This is initialized to the channel's fragment size, and will be 132 * overwritten if a new fragment size is set. Users may alter this 133 * value directly with the @c SNDCTL_DSP_LOW_WATER ioctl. 134 */ 135 unsigned int lw; 136 /** 137 * If part of a sync group, this will point to the syncmember 138 * container. 139 */ 140 struct pcmchan_syncmember *sm; 141 #ifdef OSSV4_EXPERIMENT 142 u_int16_t lpeak, rpeak; /**< Peak value from 0-32767. */ 143 #endif 144 145 struct { 146 SLIST_HEAD(, pcm_channel) head; 147 SLIST_ENTRY(pcm_channel) link; 148 struct { 149 SLIST_HEAD(, pcm_channel) head; 150 SLIST_ENTRY(pcm_channel) link; 151 } busy; 152 } children; 153 154 struct { 155 struct { 156 SLIST_ENTRY(pcm_channel) link; 157 struct { 158 SLIST_ENTRY(pcm_channel) link; 159 } busy; 160 struct { 161 SLIST_ENTRY(pcm_channel) link; 162 } opened; 163 } pcm; 164 } channels; 165 166 struct pcmchan_matrix matrix; 167 struct pcmchan_matrix matrix_scratch; 168 169 int16_t volume[SND_VOL_C_MAX][SND_CHN_T_VOL_MAX]; 170 int8_t muted[SND_VOL_C_MAX][SND_CHN_T_VOL_MAX]; 171 }; 172 173 #define CHN_HEAD(x, y) &(x)->y.head 174 #define CHN_INIT(x, y) SLIST_INIT(CHN_HEAD(x, y)) 175 #define CHN_LINK(y) y.link 176 #define CHN_EMPTY(x, y) SLIST_EMPTY(CHN_HEAD(x, y)) 177 #define CHN_FIRST(x, y) SLIST_FIRST(CHN_HEAD(x, y)) 178 #define CHN_NEXT(elm, list) SLIST_NEXT((elm), CHN_LINK(list)) 179 180 #define CHN_FOREACH(x, y, z) \ 181 SLIST_FOREACH(x, CHN_HEAD(y, z), CHN_LINK(z)) 182 183 #define CHN_FOREACH_SAFE(w, x, y, z) \ 184 SLIST_FOREACH_SAFE(w, CHN_HEAD(x, z), CHN_LINK(z), y) 185 186 #define CHN_INSERT_HEAD(x, y, z) \ 187 SLIST_INSERT_HEAD(CHN_HEAD(x, z), y, CHN_LINK(z)) 188 189 #define CHN_INSERT_AFTER(x, y, z) \ 190 SLIST_INSERT_AFTER(x, y, CHN_LINK(z)) 191 192 #define CHN_INSERT_HEAD_SAFE(x, y, z) do { \ 193 struct pcm_channel *t = NULL; \ 194 CHN_FOREACH(t, x, z) { \ 195 if (t == y) \ 196 break; \ 197 } \ 198 if (t != y) \ 199 CHN_INSERT_HEAD(x, y, z); \ 200 } while (0) 201 202 #define CHN_INSERT_AFTER_SAFE(w, x, y, z) do { \ 203 struct pcm_channel *t = NULL; \ 204 CHN_FOREACH(t, w, z) { \ 205 if (t == y) \ 206 break; \ 207 } \ 208 if (t != y) \ 209 CHN_INSERT_AFTER(x, y, z); \ 210 } while (0) 211 212 #define CHN_REMOVE(holder, elm, list) do { \ 213 if (CHN_FIRST(holder, list) == (elm)) { \ 214 SLIST_REMOVE_HEAD(CHN_HEAD(holder, list), CHN_LINK(list)); \ 215 } else { \ 216 struct pcm_channel *t = NULL; \ 217 CHN_FOREACH(t, holder, list) { \ 218 if (CHN_NEXT(t, list) == (elm)) { \ 219 SLIST_REMOVE_AFTER(t, CHN_LINK(list)); \ 220 break; \ 221 } \ 222 } \ 223 } \ 224 } while (0) 225 226 #define CHN_INSERT_SORT(w, x, y, z) do { \ 227 struct pcm_channel *t, *a = NULL; \ 228 CHN_FOREACH(t, x, z) { \ 229 if (((y)->type w t->type) || \ 230 (((y)->type == t->type) && ((y)->unit w t->unit))) \ 231 a = t; \ 232 else \ 233 break; \ 234 } \ 235 if (a != NULL) \ 236 CHN_INSERT_AFTER(a, y, z); \ 237 else \ 238 CHN_INSERT_HEAD(x, y, z); \ 239 } while (0) 240 241 #define CHN_INSERT_SORT_ASCEND(x, y, z) CHN_INSERT_SORT(>, x, y, z) 242 #define CHN_INSERT_SORT_DESCEND(x, y, z) CHN_INSERT_SORT(<, x, y, z) 243 244 #define CHN_BUF_PARENT(x, y) \ 245 (((x) != NULL && (x)->parentchannel != NULL && \ 246 (x)->parentchannel->bufhard != NULL) ? \ 247 (x)->parentchannel->bufhard : (y)) 248 249 #include "channel_if.h" 250 251 int chn_reinit(struct pcm_channel *c); 252 int chn_write(struct pcm_channel *c, struct uio *buf); 253 int chn_read(struct pcm_channel *c, struct uio *buf); 254 u_int32_t chn_start(struct pcm_channel *c, int force); 255 int chn_sync(struct pcm_channel *c, int threshold); 256 int chn_flush(struct pcm_channel *c); 257 int chn_poll(struct pcm_channel *c, int ev, struct thread *td); 258 259 char *chn_mkname(char *buf, size_t len, struct pcm_channel *c); 260 struct pcm_channel *chn_init(struct snddev_info *d, struct pcm_channel *parent, 261 kobj_class_t cls, int dir, void *devinfo); 262 void chn_kill(struct pcm_channel *c); 263 void chn_shutdown(struct pcm_channel *c); 264 int chn_release(struct pcm_channel *c); 265 int chn_reset(struct pcm_channel *c, u_int32_t fmt, u_int32_t spd); 266 int chn_setvolume_multi(struct pcm_channel *c, int vc, int left, int right, 267 int center); 268 int chn_setvolume_matrix(struct pcm_channel *c, int vc, int vt, int val); 269 int chn_getvolume_matrix(struct pcm_channel *c, int vc, int vt); 270 int chn_setmute_multi(struct pcm_channel *c, int vc, int mute); 271 int chn_setmute_matrix(struct pcm_channel *c, int vc, int vt, int mute); 272 int chn_getmute_matrix(struct pcm_channel *c, int vc, int vt); 273 void chn_vpc_reset(struct pcm_channel *c, int vc, int force); 274 int chn_setparam(struct pcm_channel *c, uint32_t format, uint32_t speed); 275 int chn_setspeed(struct pcm_channel *c, uint32_t speed); 276 int chn_setformat(struct pcm_channel *c, uint32_t format); 277 int chn_setblocksize(struct pcm_channel *c, int blkcnt, int blksz); 278 int chn_setlatency(struct pcm_channel *c, int latency); 279 void chn_syncstate(struct pcm_channel *c); 280 int chn_trigger(struct pcm_channel *c, int go); 281 int chn_getptr(struct pcm_channel *c); 282 struct pcmchan_caps *chn_getcaps(struct pcm_channel *c); 283 u_int32_t chn_getformats(struct pcm_channel *c); 284 285 struct pcmchan_matrix *chn_getmatrix(struct pcm_channel *); 286 int chn_setmatrix(struct pcm_channel *, struct pcmchan_matrix *); 287 288 int chn_oss_getorder(struct pcm_channel *, unsigned long long *); 289 int chn_oss_setorder(struct pcm_channel *, unsigned long long *); 290 int chn_oss_getmask(struct pcm_channel *, uint32_t *); 291 292 void chn_resetbuf(struct pcm_channel *c); 293 void chn_intr_locked(struct pcm_channel *c); 294 void chn_intr(struct pcm_channel *c); 295 int chn_abort(struct pcm_channel *c); 296 297 int chn_notify(struct pcm_channel *c, u_int32_t flags); 298 299 int chn_getrates(struct pcm_channel *c, int **rates); 300 int chn_syncdestroy(struct pcm_channel *c); 301 302 #define CHN_SETVOLUME(...) chn_setvolume_matrix(__VA_ARGS__) 303 #if defined(SND_DIAGNOSTIC) || defined(INVARIANTS) 304 #define CHN_GETVOLUME(...) chn_getvolume_matrix(__VA_ARGS__) 305 #else 306 #define CHN_GETVOLUME(x, y, z) ((x)->volume[y][z]) 307 #endif 308 309 #define CHN_GETMUTE(x, y, z) ((x)->muted[y][z]) 310 311 #ifdef OSSV4_EXPERIMENT 312 int chn_getpeaks(struct pcm_channel *c, int *lpeak, int *rpeak); 313 #endif 314 315 #define CHN_LOCKOWNED(c) mtx_owned((c)->lock) 316 #define CHN_LOCK(c) mtx_lock((c)->lock) 317 #define CHN_UNLOCK(c) mtx_unlock((c)->lock) 318 #define CHN_TRYLOCK(c) mtx_trylock((c)->lock) 319 #define CHN_LOCKASSERT(c) mtx_assert((c)->lock, MA_OWNED) 320 #define CHN_UNLOCKASSERT(c) mtx_assert((c)->lock, MA_NOTOWNED) 321 322 #define CHN_BROADCAST(x) cv_broadcastpri(x, PRIBIO) 323 324 int snd_fmtvalid(uint32_t fmt, uint32_t *fmtlist); 325 326 uint32_t snd_str2afmt(const char *); 327 uint32_t snd_afmt2str(uint32_t, char *, size_t); 328 329 #define AFMTSTR_LEN 16 330 331 extern int chn_latency; 332 extern int chn_latency_profile; 333 extern int report_soft_formats; 334 extern int report_soft_matrix; 335 336 enum { 337 PCMDIR_PLAY = 1, 338 PCMDIR_PLAY_VIRTUAL, 339 PCMDIR_REC, 340 PCMDIR_REC_VIRTUAL, 341 }; 342 343 #define PCMTRIG_START 1 344 #define PCMTRIG_EMLDMAWR 2 345 #define PCMTRIG_EMLDMARD 3 346 #define PCMTRIG_STOP 0 347 #define PCMTRIG_ABORT -1 348 349 #define PCMTRIG_COMMON(x) ((x) == PCMTRIG_START || \ 350 (x) == PCMTRIG_STOP || \ 351 (x) == PCMTRIG_ABORT) 352 353 #define CHN_F_CLOSING 0x00000001 /* a pending close */ 354 #define CHN_F_ABORTING 0x00000002 /* a pending abort */ 355 #define CHN_F_RUNNING 0x00000004 /* dma is running */ 356 #define CHN_F_TRIGGERED 0x00000008 357 #define CHN_F_NOTRIGGER 0x00000010 358 /* unused 0x00000020 */ 359 360 #define CHN_F_NBIO 0x00000040 /* do non-blocking i/o */ 361 #define CHN_F_MMAP 0x00000080 /* has been mmap()ed */ 362 363 #define CHN_F_BUSY 0x00000100 /* has been opened */ 364 #define CHN_F_DIRTY 0x00000200 /* need re-config */ 365 #define CHN_F_DEAD 0x00000400 /* too many errors, dead, mdk */ 366 /* unused 0x00000800 */ 367 368 #define CHN_F_HAS_SIZE 0x00001000 /* user set block size */ 369 #define CHN_F_HAS_VCHAN 0x00002000 /* vchan master */ 370 371 #define CHN_F_VCHAN_PASSTHROUGH 0x00004000 /* digital ac3/dts passthrough */ 372 #define CHN_F_VCHAN_ADAPTIVE 0x00008000 /* adaptive format/rate selection */ 373 #define CHN_F_VCHAN_DYNAMIC (CHN_F_VCHAN_PASSTHROUGH | CHN_F_VCHAN_ADAPTIVE) 374 375 #define CHN_F_VIRTUAL 0x10000000 /* not backed by hardware */ 376 #define CHN_F_BITPERFECT 0x20000000 /* un-cooked, Heh.. */ 377 #define CHN_F_PASSTHROUGH 0x40000000 /* passthrough re-config */ 378 #define CHN_F_EXCLUSIVE 0x80000000 /* exclusive access */ 379 380 #define CHN_F_BITS "\020" \ 381 "\001CLOSING" \ 382 "\002ABORTING" \ 383 "\003RUNNING" \ 384 "\004TRIGGERED" \ 385 "\005NOTRIGGER" \ 386 /* \006 */ \ 387 "\007NBIO" \ 388 "\010MMAP" \ 389 "\011BUSY" \ 390 "\012DIRTY" \ 391 "\013DEAD" \ 392 /* \014 */ \ 393 "\015HAS_SIZE" \ 394 "\016HAS_VCHAN" \ 395 "\017VCHAN_PASSTHROUGH" \ 396 "\020VCHAN_ADAPTIVE" \ 397 "\035VIRTUAL" \ 398 "\036BITPERFECT" \ 399 "\037PASSTHROUGH" \ 400 "\040EXCLUSIVE" 401 402 #define CHN_F_RESET (CHN_F_BUSY | CHN_F_DEAD | \ 403 CHN_F_VIRTUAL | CHN_F_HAS_VCHAN | \ 404 CHN_F_VCHAN_DYNAMIC | \ 405 CHN_F_PASSTHROUGH | CHN_F_EXCLUSIVE) 406 407 #define CHN_F_MMAP_INVALID (CHN_F_DEAD | CHN_F_RUNNING) 408 409 410 411 #define CHN_N_RATE 0x00000001 412 #define CHN_N_FORMAT 0x00000002 413 #define CHN_N_VOLUME 0x00000004 414 #define CHN_N_BLOCKSIZE 0x00000008 415 #define CHN_N_TRIGGER 0x00000010 416 417 #define CHN_LATENCY_MIN 0 418 #define CHN_LATENCY_MAX 10 419 #define CHN_LATENCY_DEFAULT 2 /* 21.3ms total buffering */ 420 #define CHN_POLICY_MIN CHN_LATENCY_MIN 421 #define CHN_POLICY_MAX CHN_LATENCY_MAX 422 #define CHN_POLICY_DEFAULT CHN_LATENCY_DEFAULT 423 424 #define CHN_LATENCY_PROFILE_MIN 0 425 #define CHN_LATENCY_PROFILE_MAX 1 426 #define CHN_LATENCY_PROFILE_DEFAULT CHN_LATENCY_PROFILE_MAX 427 428 #define CHN_STARTED(c) ((c)->flags & CHN_F_TRIGGERED) 429 #define CHN_STOPPED(c) (!CHN_STARTED(c)) 430 #define CHN_DIRSTR(c) (((c)->direction == PCMDIR_PLAY) ? \ 431 "PCMDIR_PLAY" : "PCMDIR_REC") 432 #define CHN_BITPERFECT(c) ((c)->flags & CHN_F_BITPERFECT) 433 #define CHN_PASSTHROUGH(c) ((c)->flags & CHN_F_PASSTHROUGH) 434 435 #define CHN_TIMEOUT 5 436 #define CHN_TIMEOUT_MIN 1 437 #define CHN_TIMEOUT_MAX 10 438 439 /* 440 * This should be large enough to hold all pcm data between 441 * tsleeps in chn_{read,write} at the highest sample rate. 442 * (which is usually 48kHz * 16bit * stereo = 192000 bytes/sec) 443 */ 444 #define CHN_2NDBUFBLKSIZE (2 * 1024) 445 /* The total number of blocks per secondary bufhard. */ 446 #define CHN_2NDBUFBLKNUM (32) 447 /* The size of a whole secondary bufhard. */ 448 #define CHN_2NDBUFMAXSIZE (131072) 449 450 #define CHANNEL_DECLARE(name) static DEFINE_CLASS(name, name ## _methods, sizeof(struct kobj)) 451