mixer.c (170235) | mixer.c (170815) |
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1/*- 2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org> 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 --- 14 unchanged lines hidden (view full) --- 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <dev/sound/pcm/sound.h> 28 29#include "mixer_if.h" 30 | 1/*- 2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org> 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 --- 14 unchanged lines hidden (view full) --- 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <dev/sound/pcm/sound.h> 28 29#include "mixer_if.h" 30 |
31SND_DECLARE_FILE("$FreeBSD: head/sys/dev/sound/pcm/mixer.c 170235 2007-06-03 10:56:22Z ariff $"); | 31SND_DECLARE_FILE("$FreeBSD: head/sys/dev/sound/pcm/mixer.c 170815 2007-06-16 03:37:28Z ariff $"); |
32 33MALLOC_DEFINE(M_MIXER, "mixer", "mixer"); 34 35#define MIXER_NAMELEN 16 36struct snd_mixer { 37 KOBJ_FIELDS; | 32 33MALLOC_DEFINE(M_MIXER, "mixer", "mixer"); 34 35#define MIXER_NAMELEN 16 36struct snd_mixer { 37 KOBJ_FIELDS; |
38 const char *type; | |
39 void *devinfo; 40 int busy; 41 int hwvol_muted; 42 int hwvol_mixer; 43 int hwvol_step; | 38 void *devinfo; 39 int busy; 40 int hwvol_muted; 41 int hwvol_mixer; 42 int hwvol_step; |
43 int type; |
|
44 device_t dev; 45 u_int32_t hwvol_mute_level; 46 u_int32_t devs; 47 u_int32_t recdevs; 48 u_int32_t recsrc; 49 u_int16_t level[32]; 50 u_int8_t parent[32]; 51 u_int32_t child[32]; --- 26 unchanged lines hidden (view full) --- 78 [SOUND_MIXER_OGAIN] = 50, 79 [SOUND_MIXER_MONITOR] = 75, 80}; 81 82static char* snd_mixernames[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES; 83 84static d_open_t mixer_open; 85static d_close_t mixer_close; | 44 device_t dev; 45 u_int32_t hwvol_mute_level; 46 u_int32_t devs; 47 u_int32_t recdevs; 48 u_int32_t recsrc; 49 u_int16_t level[32]; 50 u_int8_t parent[32]; 51 u_int32_t child[32]; --- 26 unchanged lines hidden (view full) --- 78 [SOUND_MIXER_OGAIN] = 50, 79 [SOUND_MIXER_MONITOR] = 75, 80}; 81 82static char* snd_mixernames[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES; 83 84static d_open_t mixer_open; 85static d_close_t mixer_close; |
86static d_ioctl_t mixer_ioctl; |
|
86 87static struct cdevsw mixer_cdevsw = { 88 .d_version = D_VERSION, | 87 88static struct cdevsw mixer_cdevsw = { 89 .d_version = D_VERSION, |
89 .d_flags = D_NEEDGIANT, | |
90 .d_open = mixer_open, 91 .d_close = mixer_close, 92 .d_ioctl = mixer_ioctl, 93 .d_name = "mixer", 94}; 95 96/** 97 * Keeps a count of mixer devices; used only by OSSv4 SNDCTL_SYSINFO ioctl. --- 23 unchanged lines hidden (view full) --- 121 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) 122 if (strncmp(devname, snd_mixernames[i], 123 strlen(snd_mixernames[i])) == 0) 124 return i; 125 return -1; 126} 127#endif 128 | 90 .d_open = mixer_open, 91 .d_close = mixer_close, 92 .d_ioctl = mixer_ioctl, 93 .d_name = "mixer", 94}; 95 96/** 97 * Keeps a count of mixer devices; used only by OSSv4 SNDCTL_SYSINFO ioctl. --- 23 unchanged lines hidden (view full) --- 121 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) 122 if (strncmp(devname, snd_mixernames[i], 123 strlen(snd_mixernames[i])) == 0) 124 return i; 125 return -1; 126} 127#endif 128 |
129#define MIXER_SET_UNLOCK(x, y) do { \ 130 if ((y) != 0) \ 131 snd_mtxunlock((x)->lock); \ 132} while(0) 133 134#define MIXER_SET_LOCK(x, y) do { \ 135 if ((y) != 0) \ 136 snd_mtxlock((x)->lock); \ 137} while(0) 138 |
|
129static int | 139static int |
130mixer_set_softpcmvol(struct snd_mixer *mixer, struct snddev_info *d, 131 unsigned left, unsigned right) | 140mixer_set_softpcmvol(struct snd_mixer *m, struct snddev_info *d, 141 unsigned left, unsigned right) |
132{ 133 struct pcm_channel *c; | 142{ 143 struct pcm_channel *c; |
134 int locked; | 144 int dropmtx, acquiremtx; |
135 | 145 |
136 locked = (mixer->lock != NULL && 137 mtx_owned((struct mtx *)(mixer->lock))) ? 1 : 0; 138 if (locked) 139 snd_mtxunlock(mixer->lock); | 146 if (!PCM_REGISTERED(d)) 147 return (EINVAL); |
140 | 148 |
149 if (mtx_owned(m->lock)) 150 dropmtx = 1; 151 else 152 dropmtx = 0; 153 154 if (!(d->flags & SD_F_MPSAFE) || mtx_owned(d->lock) != 0) 155 acquiremtx = 0; 156 else 157 acquiremtx = 1; 158 159 /* 160 * Be careful here. If we're coming from cdev ioctl, it is OK to 161 * not doing locking AT ALL (except on individual channel) since 162 * we've been heavily guarded by pcm cv, or if we're still 163 * under Giant influence. Since we also have mix_* calls, we cannot 164 * assume such protection and just do the lock as usuall. 165 */ 166 MIXER_SET_UNLOCK(m, dropmtx); 167 MIXER_SET_LOCK(d, acquiremtx); 168 |
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141 if (CHN_EMPTY(d, channels.pcm.busy)) { 142 CHN_FOREACH(c, d, channels.pcm) { 143 CHN_LOCK(c); 144 if (c->direction == PCMDIR_PLAY && 145 (c->feederflags & (1 << FEEDER_VOLUME))) 146 chn_setvolume(c, left, right); 147 CHN_UNLOCK(c); 148 } 149 } else { 150 CHN_FOREACH(c, d, channels.pcm.busy) { 151 CHN_LOCK(c); 152 if (c->direction == PCMDIR_PLAY && 153 (c->feederflags & (1 << FEEDER_VOLUME))) 154 chn_setvolume(c, left, right); 155 CHN_UNLOCK(c); 156 } 157 } 158 | 169 if (CHN_EMPTY(d, channels.pcm.busy)) { 170 CHN_FOREACH(c, d, channels.pcm) { 171 CHN_LOCK(c); 172 if (c->direction == PCMDIR_PLAY && 173 (c->feederflags & (1 << FEEDER_VOLUME))) 174 chn_setvolume(c, left, right); 175 CHN_UNLOCK(c); 176 } 177 } else { 178 CHN_FOREACH(c, d, channels.pcm.busy) { 179 CHN_LOCK(c); 180 if (c->direction == PCMDIR_PLAY && 181 (c->feederflags & (1 << FEEDER_VOLUME))) 182 chn_setvolume(c, left, right); 183 CHN_UNLOCK(c); 184 } 185 } 186 |
159 if (locked) 160 snd_mtxlock(mixer->lock); | 187 MIXER_SET_UNLOCK(d, acquiremtx); 188 MIXER_SET_LOCK(m, dropmtx); |
161 | 189 |
162 return 0; | 190 return (0); |
163} 164 165static int 166mixer_set(struct snd_mixer *m, unsigned dev, unsigned lev) 167{ 168 struct snddev_info *d; 169 unsigned l, r, tl, tr; 170 u_int32_t parent = SOUND_MIXER_NONE, child = 0; 171 u_int32_t realdev; | 191} 192 193static int 194mixer_set(struct snd_mixer *m, unsigned dev, unsigned lev) 195{ 196 struct snddev_info *d; 197 unsigned l, r, tl, tr; 198 u_int32_t parent = SOUND_MIXER_NONE, child = 0; 199 u_int32_t realdev; |
172 int i; | 200 int i, dropmtx; |
173 174 if (m == NULL || dev >= SOUND_MIXER_NRDEVICES || 175 (0 == (m->devs & (1 << dev)))) 176 return -1; 177 178 l = min((lev & 0x00ff), 100); 179 r = min(((lev & 0xff00) >> 8), 100); 180 realdev = m->realdev[dev]; 181 182 d = device_get_softc(m->dev); 183 if (d == NULL) 184 return -1; 185 | 201 202 if (m == NULL || dev >= SOUND_MIXER_NRDEVICES || 203 (0 == (m->devs & (1 << dev)))) 204 return -1; 205 206 l = min((lev & 0x00ff), 100); 207 r = min(((lev & 0xff00) >> 8), 100); 208 realdev = m->realdev[dev]; 209 210 d = device_get_softc(m->dev); 211 if (d == NULL) 212 return -1; 213 |
214 /* It is safe to drop this mutex due to Giant. */ 215 if (!(d->flags & SD_F_MPSAFE) && mtx_owned(m->lock) != 0) 216 dropmtx = 1; 217 else 218 dropmtx = 0; 219 220 MIXER_SET_UNLOCK(m, dropmtx); 221 |
|
186 /* TODO: recursive handling */ 187 parent = m->parent[dev]; 188 if (parent >= SOUND_MIXER_NRDEVICES) 189 parent = SOUND_MIXER_NONE; 190 if (parent == SOUND_MIXER_NONE) 191 child = m->child[dev]; 192 193 if (parent != SOUND_MIXER_NONE) { 194 tl = (l * (m->level[parent] & 0x00ff)) / 100; 195 tr = (r * ((m->level[parent] & 0xff00) >> 8)) / 100; 196 if (dev == SOUND_MIXER_PCM && (d->flags & SD_F_SOFTPCMVOL)) | 222 /* TODO: recursive handling */ 223 parent = m->parent[dev]; 224 if (parent >= SOUND_MIXER_NRDEVICES) 225 parent = SOUND_MIXER_NONE; 226 if (parent == SOUND_MIXER_NONE) 227 child = m->child[dev]; 228 229 if (parent != SOUND_MIXER_NONE) { 230 tl = (l * (m->level[parent] & 0x00ff)) / 100; 231 tr = (r * ((m->level[parent] & 0xff00) >> 8)) / 100; 232 if (dev == SOUND_MIXER_PCM && (d->flags & SD_F_SOFTPCMVOL)) |
197 mixer_set_softpcmvol(m, d, tl, tr); | 233 (void)mixer_set_softpcmvol(m, d, tl, tr); |
198 else if (realdev != SOUND_MIXER_NONE && | 234 else if (realdev != SOUND_MIXER_NONE && |
199 MIXER_SET(m, realdev, tl, tr) < 0) | 235 MIXER_SET(m, realdev, tl, tr) < 0) { 236 MIXER_SET_LOCK(m, dropmtx); |
200 return -1; | 237 return -1; |
238 } |
|
201 } else if (child != 0) { 202 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) { 203 if (!(child & (1 << i)) || m->parent[i] != dev) 204 continue; 205 realdev = m->realdev[i]; 206 tl = (l * (m->level[i] & 0x00ff)) / 100; 207 tr = (r * ((m->level[i] & 0xff00) >> 8)) / 100; 208 if (i == SOUND_MIXER_PCM && (d->flags & SD_F_SOFTPCMVOL)) | 239 } else if (child != 0) { 240 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) { 241 if (!(child & (1 << i)) || m->parent[i] != dev) 242 continue; 243 realdev = m->realdev[i]; 244 tl = (l * (m->level[i] & 0x00ff)) / 100; 245 tr = (r * ((m->level[i] & 0xff00) >> 8)) / 100; 246 if (i == SOUND_MIXER_PCM && (d->flags & SD_F_SOFTPCMVOL)) |
209 mixer_set_softpcmvol(m, d, tl, tr); | 247 (void)mixer_set_softpcmvol(m, d, tl, tr); |
210 else if (realdev != SOUND_MIXER_NONE) 211 MIXER_SET(m, realdev, tl, tr); 212 } 213 realdev = m->realdev[dev]; 214 if (realdev != SOUND_MIXER_NONE && | 248 else if (realdev != SOUND_MIXER_NONE) 249 MIXER_SET(m, realdev, tl, tr); 250 } 251 realdev = m->realdev[dev]; 252 if (realdev != SOUND_MIXER_NONE && |
215 MIXER_SET(m, realdev, l, r) < 0) | 253 MIXER_SET(m, realdev, l, r) < 0) { 254 MIXER_SET_LOCK(m, dropmtx); |
216 return -1; | 255 return -1; |
256 } |
|
217 } else { 218 if (dev == SOUND_MIXER_PCM && (d->flags & SD_F_SOFTPCMVOL)) | 257 } else { 258 if (dev == SOUND_MIXER_PCM && (d->flags & SD_F_SOFTPCMVOL)) |
219 mixer_set_softpcmvol(m, d, l, r); | 259 (void)mixer_set_softpcmvol(m, d, l, r); |
220 else if (realdev != SOUND_MIXER_NONE && | 260 else if (realdev != SOUND_MIXER_NONE && |
221 MIXER_SET(m, realdev, l, r) < 0) | 261 MIXER_SET(m, realdev, l, r) < 0) { 262 MIXER_SET_LOCK(m, dropmtx); |
222 return -1; | 263 return -1; |
264 } |
|
223 } 224 225 m->level[dev] = l | (r << 8); 226 | 265 } 266 267 m->level[dev] = l | (r << 8); 268 |
269 MIXER_SET_LOCK(m, dropmtx); 270 |
|
227 return 0; 228} 229 230static int 231mixer_get(struct snd_mixer *mixer, int dev) 232{ 233 if ((dev < SOUND_MIXER_NRDEVICES) && (mixer->devs & (1 << dev))) 234 return mixer->level[dev]; | 271 return 0; 272} 273 274static int 275mixer_get(struct snd_mixer *mixer, int dev) 276{ 277 if ((dev < SOUND_MIXER_NRDEVICES) && (mixer->devs & (1 << dev))) 278 return mixer->level[dev]; |
235 else return -1; | 279 else 280 return -1; |
236} 237 238static int 239mixer_setrecsrc(struct snd_mixer *mixer, u_int32_t src) 240{ | 281} 282 283static int 284mixer_setrecsrc(struct snd_mixer *mixer, u_int32_t src) 285{ |
286 struct snddev_info *d; 287 int dropmtx; 288 289 d = device_get_softc(mixer->dev); 290 if (d == NULL) 291 return -1; 292 if (!(d->flags & SD_F_MPSAFE) && mtx_owned(mixer->lock) != 0) 293 dropmtx = 1; 294 else 295 dropmtx = 0; |
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241 src &= mixer->recdevs; 242 if (src == 0) 243 src = SOUND_MASK_MIC; | 296 src &= mixer->recdevs; 297 if (src == 0) 298 src = SOUND_MASK_MIC; |
299 /* It is safe to drop this mutex due to Giant. */ 300 MIXER_SET_UNLOCK(mixer, dropmtx); |
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244 mixer->recsrc = MIXER_SETRECSRC(mixer, src); | 301 mixer->recsrc = MIXER_SETRECSRC(mixer, src); |
302 MIXER_SET_LOCK(mixer, dropmtx); |
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245 return 0; 246} 247 248static int 249mixer_getrecsrc(struct snd_mixer *mixer) 250{ 251 return mixer->recsrc; 252} --- 224 unchanged lines hidden (view full) --- 477} 478 479void * 480mix_getdevinfo(struct snd_mixer *m) 481{ 482 return m->devinfo; 483} 484 | 303 return 0; 304} 305 306static int 307mixer_getrecsrc(struct snd_mixer *mixer) 308{ 309 return mixer->recsrc; 310} --- 224 unchanged lines hidden (view full) --- 535} 536 537void * 538mix_getdevinfo(struct snd_mixer *m) 539{ 540 return m->devinfo; 541} 542 |
485int 486mixer_init(device_t dev, kobj_class_t cls, void *devinfo) | 543static struct snd_mixer * 544mixer_obj_create(device_t dev, kobj_class_t cls, void *devinfo, 545 int type, const char *desc) |
487{ | 546{ |
488 struct snddev_info *snddev; | |
489 struct snd_mixer *m; | 547 struct snd_mixer *m; |
490 u_int16_t v; 491 struct cdev *pdev; 492 int i, unit, devunit, val; | 548 int i; |
493 | 549 |
550 KASSERT(dev != NULL && cls != NULL && devinfo != NULL, 551 ("%s(): NULL data dev=%p cls=%p devinfo=%p", 552 __func__, dev, cls, devinfo)); 553 KASSERT(type == MIXER_TYPE_PRIMARY || type == MIXER_TYPE_SECONDARY, 554 ("invalid mixer type=%d", type)); 555 |
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494 m = (struct snd_mixer *)kobj_create(cls, M_MIXER, M_WAITOK | M_ZERO); | 556 m = (struct snd_mixer *)kobj_create(cls, M_MIXER, M_WAITOK | M_ZERO); |
495 snprintf(m->name, MIXER_NAMELEN, "%s:mixer", device_get_nameunit(dev)); 496 m->lock = snd_mtxcreate(m->name, "pcm mixer"); 497 m->type = cls->name; | 557 snprintf(m->name, sizeof(m->name), "%s:mixer", 558 device_get_nameunit(dev)); 559 if (desc != NULL) { 560 strlcat(m->name, ":", sizeof(m->name)); 561 strlcat(m->name, desc, sizeof(m->name)); 562 } 563 m->lock = snd_mtxcreate(m->name, (type == MIXER_TYPE_PRIMARY) ? 564 "primary pcm mixer" : "secondary pcm mixer"); 565 m->type = type; |
498 m->devinfo = devinfo; 499 m->busy = 0; 500 m->dev = dev; | 566 m->devinfo = devinfo; 567 m->busy = 0; 568 m->dev = dev; |
501 for (i = 0; i < 32; i++) { | 569 for (i = 0; i < (sizeof(m->parent) / sizeof(m->parent[0])); i++) { |
502 m->parent[i] = SOUND_MIXER_NONE; 503 m->child[i] = 0; 504 m->realdev[i] = i; 505 } 506 | 570 m->parent[i] = SOUND_MIXER_NONE; 571 m->child[i] = 0; 572 m->realdev[i] = i; 573 } 574 |
507 if (MIXER_INIT(m)) 508 goto bad; | 575 if (MIXER_INIT(m)) { 576 snd_mtxlock(m->lock); 577 snd_mtxfree(m->lock); 578 kobj_delete((kobj_t)m, M_MIXER); 579 return (NULL); 580 } |
509 | 581 |
582 return (m); 583} 584 585int 586mixer_delete(struct snd_mixer *m) 587{ 588 KASSERT(m != NULL, ("NULL snd_mixer")); 589 KASSERT(m->type == MIXER_TYPE_SECONDARY, 590 ("%s(): illegal mixer type=%d", __func__, m->type)); 591 592 snd_mtxlock(m->lock); 593 594 MIXER_UNINIT(m); 595 596 snd_mtxfree(m->lock); 597 kobj_delete((kobj_t)m, M_MIXER); 598 599 --mixer_count; 600 601 return (0); 602} 603 604struct snd_mixer * 605mixer_create(device_t dev, kobj_class_t cls, void *devinfo, const char *desc) 606{ 607 struct snd_mixer *m; 608 609 m = mixer_obj_create(dev, cls, devinfo, MIXER_TYPE_SECONDARY, desc); 610 611 if (m != NULL) 612 ++mixer_count; 613 614 return (m); 615} 616 617int 618mixer_init(device_t dev, kobj_class_t cls, void *devinfo) 619{ 620 struct snddev_info *snddev; 621 struct snd_mixer *m; 622 u_int16_t v; 623 struct cdev *pdev; 624 int i, unit, devunit, val; 625 626 m = mixer_obj_create(dev, cls, devinfo, MIXER_TYPE_PRIMARY, NULL); 627 if (m == NULL) 628 return (-1); 629 |
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510 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) { 511 v = snd_mixerdefaults[i]; 512 513 if (resource_int_value(device_get_name(dev), 514 device_get_unit(dev), snd_mixernames[i], &val) == 0) { 515 if (val >= 0 && val <= 100) { 516 v = (u_int16_t) val; 517 } --- 33 unchanged lines hidden (view full) --- 551 if (m->child[i] != 0) 552 printf(" child=0x%08x", m->child[i]); 553 printf("\n"); 554 } 555 if (snddev->flags & SD_F_SOFTPCMVOL) 556 device_printf(dev, "Soft PCM mixer ENABLED\n"); 557 } 558 | 630 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) { 631 v = snd_mixerdefaults[i]; 632 633 if (resource_int_value(device_get_name(dev), 634 device_get_unit(dev), snd_mixernames[i], &val) == 0) { 635 if (val >= 0 && val <= 100) { 636 v = (u_int16_t) val; 637 } --- 33 unchanged lines hidden (view full) --- 671 if (m->child[i] != 0) 672 printf(" child=0x%08x", m->child[i]); 673 printf("\n"); 674 } 675 if (snddev->flags & SD_F_SOFTPCMVOL) 676 device_printf(dev, "Soft PCM mixer ENABLED\n"); 677 } 678 |
559 return 0; 560 561bad: 562 snd_mtxlock(m->lock); 563 snd_mtxfree(m->lock); 564 kobj_delete((kobj_t)m, M_MIXER); 565 return -1; | 679 return (0); |
566} 567 568int 569mixer_uninit(device_t dev) 570{ 571 int i; 572 struct snddev_info *d; 573 struct snd_mixer *m; 574 struct cdev *pdev; 575 576 d = device_get_softc(dev); 577 pdev = mixer_get_devt(dev); 578 if (d == NULL || pdev == NULL || pdev->si_drv1 == NULL) 579 return EBADF; | 680} 681 682int 683mixer_uninit(device_t dev) 684{ 685 int i; 686 struct snddev_info *d; 687 struct snd_mixer *m; 688 struct cdev *pdev; 689 690 d = device_get_softc(dev); 691 pdev = mixer_get_devt(dev); 692 if (d == NULL || pdev == NULL || pdev->si_drv1 == NULL) 693 return EBADF; |
694 |
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580 m = pdev->si_drv1; | 695 m = pdev->si_drv1; |
696 KASSERT(m != NULL, ("NULL snd_mixer")); 697 KASSERT(m->type == MIXER_TYPE_PRIMARY, 698 ("%s(): illegal mixer type=%d", __func__, m->type)); 699 |
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581 snd_mtxlock(m->lock); 582 583 if (m->busy) { 584 snd_mtxunlock(m->lock); 585 return EBUSY; 586 } 587 588 pdev->si_drv1 = NULL; --- 139 unchanged lines hidden (view full) --- 728 right += right_step * m->hwvol_step; 729 if (right < 0) 730 right = 0; 731 mixer_set(m, m->hwvol_mixer, left | right << 8); 732 } 733 snd_mtxunlock(m->lock); 734} 735 | 700 snd_mtxlock(m->lock); 701 702 if (m->busy) { 703 snd_mtxunlock(m->lock); 704 return EBUSY; 705 } 706 707 pdev->si_drv1 = NULL; --- 139 unchanged lines hidden (view full) --- 847 right += right_step * m->hwvol_step; 848 if (right < 0) 849 right = 0; 850 mixer_set(m, m->hwvol_mixer, left | right << 8); 851 } 852 snd_mtxunlock(m->lock); 853} 854 |
855int 856mixer_busy(struct snd_mixer *m) 857{ 858 KASSERT(m != NULL, ("NULL snd_mixer")); 859 860 return (m->busy); 861} 862 863int 864mix_set(struct snd_mixer *m, u_int dev, u_int left, u_int right) 865{ 866 int ret; 867 868 KASSERT(m != NULL, ("NULL snd_mixer")); 869 870 snd_mtxlock(m->lock); 871 ret = mixer_set(m, dev, left | (right << 8)); 872 snd_mtxunlock(m->lock); 873 874 return ((ret != 0) ? ENXIO : 0); 875} 876 877int 878mix_get(struct snd_mixer *m, u_int dev) 879{ 880 int ret; 881 882 KASSERT(m != NULL, ("NULL snd_mixer")); 883 884 snd_mtxlock(m->lock); 885 ret = mixer_get(m, dev); 886 snd_mtxunlock(m->lock); 887 888 return (ret); 889} 890 891int 892mix_setrecsrc(struct snd_mixer *m, u_int32_t src) 893{ 894 int ret; 895 896 KASSERT(m != NULL, ("NULL snd_mixer")); 897 898 snd_mtxlock(m->lock); 899 ret = mixer_setrecsrc(m, src); 900 snd_mtxunlock(m->lock); 901 902 return ((ret != 0) ? ENXIO : 0); 903} 904 905u_int32_t 906mix_getrecsrc(struct snd_mixer *m) 907{ 908 u_int32_t ret; 909 910 KASSERT(m != NULL, ("NULL snd_mixer")); 911 912 snd_mtxlock(m->lock); 913 ret = mixer_getrecsrc(m); 914 snd_mtxunlock(m->lock); 915 916 return (ret); 917} 918 919int 920mix_get_type(struct snd_mixer *m) 921{ 922 KASSERT(m != NULL, ("NULL snd_mixer")); 923 924 return (m->type); 925} 926 |
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736/* ----------------------------------------------------------------------- */ 737 738static int 739mixer_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 740{ | 927/* ----------------------------------------------------------------------- */ 928 929static int 930mixer_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 931{ |
932 struct snddev_info *d; |
|
741 struct snd_mixer *m; 742 | 933 struct snd_mixer *m; 934 |
935 936 if (i_dev == NULL || i_dev->si_drv1 == NULL) 937 return (EBADF); 938 |
|
743 m = i_dev->si_drv1; | 939 m = i_dev->si_drv1; |
744 snd_mtxlock(m->lock); | 940 d = device_get_softc(m->dev); 941 if (!PCM_REGISTERED(d)) 942 return (EBADF); |
745 | 943 |
746 m->busy = 1; | 944 /* XXX Need Giant magic entry ??? */ |
747 | 945 |
946 snd_mtxlock(m->lock); 947 m->busy = 1; |
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748 snd_mtxunlock(m->lock); | 948 snd_mtxunlock(m->lock); |
749 return 0; | 949 950 return (0); |
750} 751 752static int 753mixer_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 754{ | 951} 952 953static int 954mixer_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 955{ |
956 struct snddev_info *d; |
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755 struct snd_mixer *m; | 957 struct snd_mixer *m; |
958 int ret; |
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756 | 959 |
960 if (i_dev == NULL || i_dev->si_drv1 == NULL) 961 return (EBADF); 962 |
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757 m = i_dev->si_drv1; | 963 m = i_dev->si_drv1; |
758 snd_mtxlock(m->lock); | 964 d = device_get_softc(m->dev); 965 if (!PCM_REGISTERED(d)) 966 return (EBADF); |
759 | 967 |
760 if (!m->busy) { 761 snd_mtxunlock(m->lock); 762 return EBADF; 763 } 764 m->busy = 0; | 968 /* XXX Need Giant magic entry ??? */ |
765 | 969 |
970 snd_mtxlock(m->lock); 971 ret = (m->busy == 0) ? EBADF : 0; 972 m->busy = 0; |
|
766 snd_mtxunlock(m->lock); | 973 snd_mtxunlock(m->lock); |
767 return 0; | 974 975 return (ret); |
768} 769 | 976} 977 |
978static int 979mixer_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 980 struct thread *td) 981{ 982 struct snddev_info *d; 983 int ret; 984 985 if (i_dev == NULL || i_dev->si_drv1 == NULL) 986 return (EBADF); 987 988 d = device_get_softc(((struct snd_mixer *)i_dev->si_drv1)->dev); 989 if (!PCM_REGISTERED(d)) 990 return (EBADF); 991 992 PCM_GIANT_ENTER(d); 993 PCM_ACQUIRE_QUICK(d); 994 995 ret = mixer_ioctl_cmd(i_dev, cmd, arg, mode, td, MIXER_CMD_CDEV); 996 997 PCM_RELEASE_QUICK(d); 998 PCM_GIANT_LEAVE(d); 999 1000 return (ret); 1001} 1002 1003/* 1004 * XXX Make sure you can guarantee concurrency safety before calling this 1005 * function, be it through Giant, PCM_CV_*, etc ! 1006 */ |
|
770int | 1007int |
771mixer_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td) | 1008mixer_ioctl_cmd(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1009 struct thread *td, int from) |
772{ 773 struct snd_mixer *m; 774 int ret, *arg_i = (int *)arg; 775 int v = -1, j = cmd & 0xff; 776 777 m = i_dev->si_drv1; 778 779 if (m == NULL) | 1010{ 1011 struct snd_mixer *m; 1012 int ret, *arg_i = (int *)arg; 1013 int v = -1, j = cmd & 0xff; 1014 1015 m = i_dev->si_drv1; 1016 1017 if (m == NULL) |
780 return EBADF; | 1018 return (EBADF); |
781 782 snd_mtxlock(m->lock); | 1019 1020 snd_mtxlock(m->lock); |
783 if (mode != -1 && !m->busy) { | 1021 if (from == MIXER_CMD_CDEV && !m->busy) { |
784 snd_mtxunlock(m->lock); | 1022 snd_mtxunlock(m->lock); |
785 return EBADF; | 1023 return (EBADF); |
786 } 787 788 if (cmd == SNDCTL_MIXERINFO) { 789 snd_mtxunlock(m->lock); | 1024 } 1025 1026 if (cmd == SNDCTL_MIXERINFO) { 1027 snd_mtxunlock(m->lock); |
790 return mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); | 1028 return (mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg)); |
791 } 792 793 if ((cmd & MIXER_WRITE(0)) == MIXER_WRITE(0)) { 794 if (j == SOUND_MIXER_RECSRC) 795 ret = mixer_setrecsrc(m, *arg_i); 796 else 797 ret = mixer_set(m, j, *arg_i); 798 snd_mtxunlock(m->lock); | 1029 } 1030 1031 if ((cmd & MIXER_WRITE(0)) == MIXER_WRITE(0)) { 1032 if (j == SOUND_MIXER_RECSRC) 1033 ret = mixer_setrecsrc(m, *arg_i); 1034 else 1035 ret = mixer_set(m, j, *arg_i); 1036 snd_mtxunlock(m->lock); |
799 return (ret == 0)? 0 : ENXIO; | 1037 return ((ret == 0) ? 0 : ENXIO); |
800 } 801 802 if ((cmd & MIXER_READ(0)) == MIXER_READ(0)) { 803 switch (j) { 804 case SOUND_MIXER_DEVMASK: 805 case SOUND_MIXER_CAPS: 806 case SOUND_MIXER_STEREODEVS: 807 v = mix_getdevs(m); --- 7 unchanged lines hidden (view full) --- 815 v = mixer_getrecsrc(m); 816 break; 817 818 default: 819 v = mixer_get(m, j); 820 } 821 *arg_i = v; 822 snd_mtxunlock(m->lock); | 1038 } 1039 1040 if ((cmd & MIXER_READ(0)) == MIXER_READ(0)) { 1041 switch (j) { 1042 case SOUND_MIXER_DEVMASK: 1043 case SOUND_MIXER_CAPS: 1044 case SOUND_MIXER_STEREODEVS: 1045 v = mix_getdevs(m); --- 7 unchanged lines hidden (view full) --- 1053 v = mixer_getrecsrc(m); 1054 break; 1055 1056 default: 1057 v = mixer_get(m, j); 1058 } 1059 *arg_i = v; 1060 snd_mtxunlock(m->lock); |
823 return (v != -1)? 0 : ENXIO; | 1061 return ((v != -1) ? 0 : ENXIO); |
824 } 825 826 ret = 0; 827 828 switch (cmd) { 829 /** @todo Double check return values, error codes. */ 830 case SNDCTL_SYSINFO: | 1062 } 1063 1064 ret = 0; 1065 1066 switch (cmd) { 1067 /** @todo Double check return values, error codes. */ 1068 case SNDCTL_SYSINFO: |
1069 snd_mtxunlock(m->lock); |
|
831 sound_oss_sysinfo((oss_sysinfo *)arg); | 1070 sound_oss_sysinfo((oss_sysinfo *)arg); |
1071 return (ret); |
|
832 break; 833 case SNDCTL_AUDIOINFO: | 1072 break; 1073 case SNDCTL_AUDIOINFO: |
834 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); | 1074 snd_mtxunlock(m->lock); 1075 return (dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg)); |
835 break; 836 case SNDCTL_DSP_GET_RECSRC_NAMES: 837 bcopy((void *)&m->enuminfo, arg, sizeof(oss_mixer_enuminfo)); 838 break; 839 case SNDCTL_DSP_GET_RECSRC: 840 ret = mixer_get_recroute(m, arg_i); 841 break; 842 case SNDCTL_DSP_SET_RECSRC: 843 ret = mixer_set_recroute(m, *arg_i); 844 break; 845 case OSS_GETVERSION: 846 *arg_i = SOUND_VERSION; 847 break; 848 default: 849 ret = ENXIO; | 1076 break; 1077 case SNDCTL_DSP_GET_RECSRC_NAMES: 1078 bcopy((void *)&m->enuminfo, arg, sizeof(oss_mixer_enuminfo)); 1079 break; 1080 case SNDCTL_DSP_GET_RECSRC: 1081 ret = mixer_get_recroute(m, arg_i); 1082 break; 1083 case SNDCTL_DSP_SET_RECSRC: 1084 ret = mixer_set_recroute(m, *arg_i); 1085 break; 1086 case OSS_GETVERSION: 1087 *arg_i = SOUND_VERSION; 1088 break; 1089 default: 1090 ret = ENXIO; |
1091 break; |
|
850 } 851 852 snd_mtxunlock(m->lock); | 1092 } 1093 1094 snd_mtxunlock(m->lock); |
853 return ret; | 1095 1096 return (ret); |
854} 855 856#ifdef USING_DEVFS 857static void 858mixer_clone(void *arg, 859#if __FreeBSD_version >= 600034 860 struct ucred *cred, 861#endif 862 char *name, int namelen, struct cdev **dev) 863{ 864 struct snddev_info *d; 865 866 if (*dev != NULL) 867 return; 868 if (strcmp(name, "mixer") == 0) { 869 d = devclass_get_softc(pcm_devclass, snd_unit); | 1097} 1098 1099#ifdef USING_DEVFS 1100static void 1101mixer_clone(void *arg, 1102#if __FreeBSD_version >= 600034 1103 struct ucred *cred, 1104#endif 1105 char *name, int namelen, struct cdev **dev) 1106{ 1107 struct snddev_info *d; 1108 1109 if (*dev != NULL) 1110 return; 1111 if (strcmp(name, "mixer") == 0) { 1112 d = devclass_get_softc(pcm_devclass, snd_unit); |
870 if (d != NULL && d->mixer_dev != NULL) { | 1113 if (PCM_REGISTERED(d) && d->mixer_dev != NULL) { |
871 *dev = d->mixer_dev; 872 dev_ref(*dev); 873 } 874 } 875} 876 877static void 878mixer_sysinit(void *p) --- 35 unchanged lines hidden (view full) --- 914 * @retval EINVAL oss_mixerinfo::dev specified a bad value 915 * @retval 0 success 916 */ 917int 918mixer_oss_mixerinfo(struct cdev *i_dev, oss_mixerinfo *mi) 919{ 920 struct snddev_info *d; 921 struct snd_mixer *m; | 1114 *dev = d->mixer_dev; 1115 dev_ref(*dev); 1116 } 1117 } 1118} 1119 1120static void 1121mixer_sysinit(void *p) --- 35 unchanged lines hidden (view full) --- 1157 * @retval EINVAL oss_mixerinfo::dev specified a bad value 1158 * @retval 0 success 1159 */ 1160int 1161mixer_oss_mixerinfo(struct cdev *i_dev, oss_mixerinfo *mi) 1162{ 1163 struct snddev_info *d; 1164 struct snd_mixer *m; |
922 struct cdev *t_cdev; 923 int nmix, ret, pcmunit, i; | 1165 int nmix, i; |
924 925 /* 926 * If probing the device handling the ioctl, make sure it's a mixer 927 * device. (This ioctl is valid on audio, mixer, and midi devices.) 928 */ | 1166 1167 /* 1168 * If probing the device handling the ioctl, make sure it's a mixer 1169 * device. (This ioctl is valid on audio, mixer, and midi devices.) 1170 */ |
929 if ((mi->dev == -1) && (i_dev->si_devsw != &mixer_cdevsw)) 930 return EINVAL; | 1171 if (mi->dev == -1 && i_dev->si_devsw != &mixer_cdevsw) 1172 return (EINVAL); |
931 932 d = NULL; 933 m = NULL; | 1173 1174 d = NULL; 1175 m = NULL; |
934 t_cdev = NULL; | |
935 nmix = 0; | 1176 nmix = 0; |
936 ret = 0; 937 pcmunit = -1; /* pcmX */ | |
938 939 /* 940 * There's a 1:1 relationship between mixers and PCM devices, so 941 * begin by iterating over PCM devices and search for our mixer. 942 */ 943 for (i = 0; pcm_devclass != NULL && 944 i < devclass_get_maxunit(pcm_devclass); i++) { 945 d = devclass_get_softc(pcm_devclass, i); | 1177 1178 /* 1179 * There's a 1:1 relationship between mixers and PCM devices, so 1180 * begin by iterating over PCM devices and search for our mixer. 1181 */ 1182 for (i = 0; pcm_devclass != NULL && 1183 i < devclass_get_maxunit(pcm_devclass); i++) { 1184 d = devclass_get_softc(pcm_devclass, i); |
946 if (d == NULL) | 1185 if (!PCM_REGISTERED(d)) |
947 continue; 948 | 1186 continue; 1187 |
1188 /* XXX Need Giant magic entry */ 1189 |
|
949 /* See the note in function docblock. */ 950 mtx_assert(d->lock, MA_NOTOWNED); | 1190 /* See the note in function docblock. */ 1191 mtx_assert(d->lock, MA_NOTOWNED); |
951 pcm_inprog(d, 1); | |
952 pcm_lock(d); 953 | 1192 pcm_lock(d); 1193 |
954 if (d->mixer_dev != NULL) { 955 if (((mi->dev == -1) && (d->mixer_dev == i_dev)) || (mi->dev == nmix)) { 956 t_cdev = d->mixer_dev; 957 pcmunit = i; 958 break; 959 } 960 ++nmix; 961 } | 1194 if (d->mixer_dev != NULL && d->mixer_dev->si_drv1 != NULL && 1195 ((mi->dev == -1 && d->mixer_dev == i_dev) || 1196 mi->dev == nmix)) { 1197 m = d->mixer_dev->si_drv1; 1198 mtx_lock(m->lock); |
962 | 1199 |
963 pcm_unlock(d); 964 pcm_inprog(d, -1); 965 } | 1200 /* 1201 * At this point, the following synchronization stuff 1202 * has happened: 1203 * - a specific PCM device is locked. 1204 * - a specific mixer device has been locked, so be 1205 * sure to unlock when existing. 1206 */ 1207 bzero((void *)mi, sizeof(*mi)); 1208 mi->dev = nmix; 1209 snprintf(mi->id, sizeof(mi->id), "mixer%d", i); 1210 strlcpy(mi->name, m->name, sizeof(mi->name)); 1211 mi->modify_counter = m->modify_counter; 1212 mi->card_number = i; 1213 /* 1214 * Currently, FreeBSD assumes 1:1 relationship between 1215 * a pcm and mixer devices, so this is hardcoded to 0. 1216 */ 1217 mi->port_number = 0; |
966 | 1218 |
967 /* 968 * If t_cdev is NULL, then search was exhausted and device wasn't 969 * found. No locks are held, so just return. 970 */ 971 if (t_cdev == NULL) 972 return EINVAL; | 1219 /** 1220 * @todo Fill in @sa oss_mixerinfo::mixerhandle. 1221 * @note From 4Front: "mixerhandle is an arbitrary 1222 * string that identifies the mixer better than 1223 * the device number (mixerinfo.dev). Device 1224 * numbers may change depending on the order the 1225 * drivers are loaded. However the handle should 1226 * remain the same provided that the sound card 1227 * is not moved to another PCI slot." 1228 */ |
973 | 1229 |
974 m = t_cdev->si_drv1; 975 mtx_lock(m->lock); | 1230 /** 1231 * @note 1232 * @sa oss_mixerinfo::magic is a reserved field. 1233 * 1234 * @par 1235 * From 4Front: "magic is usually 0. However some 1236 * devices may have dedicated setup utilities and the 1237 * magic field may contain an unique driver specific 1238 * value (managed by [4Front])." 1239 */ |
976 | 1240 |
977 /* 978 * At this point, the following synchronization stuff has happened: 979 * - a specific PCM device is locked and its "in progress 980 * operations" counter has been incremented, so be sure to unlock 981 * and decrement when exiting; 982 * - a specific mixer device has been locked, so be sure to unlock 983 * when existing. 984 */ | 1241 mi->enabled = device_is_attached(m->dev) ? 1 : 0; 1242 /** 1243 * The only flag for @sa oss_mixerinfo::caps is 1244 * currently MIXER_CAP_VIRTUAL, which I'm not sure we 1245 * really worry about. 1246 */ 1247 /** 1248 * Mixer extensions currently aren't supported, so 1249 * leave @sa oss_mixerinfo::nrext blank for now. 1250 */ 1251 /** 1252 * @todo Fill in @sa oss_mixerinfo::priority (requires 1253 * touching drivers?) 1254 * @note The priority field is for mixer applets to 1255 * determine which mixer should be the default, with 0 1256 * being least preferred and 10 being most preferred. 1257 * From 4Front: "OSS drivers like ICH use higher 1258 * values (10) because such chips are known to be used 1259 * only on motherboards. Drivers for high end pro 1260 * devices use 0 because they will never be the 1261 * default mixer. Other devices use values 1 to 9 1262 * depending on the estimated probability of being the 1263 * default device. 1264 * 1265 * XXX Described by Hannu@4Front, but not found in 1266 * soundcard.h. 1267 strlcpy(mi->devnode, d->mixer_dev->si_name, 1268 sizeof(mi->devnode)); 1269 mi->legacy_device = i; 1270 */ 1271 mtx_unlock(m->lock); 1272 } else 1273 ++nmix; |
985 | 1274 |
986 bzero((void *)mi, sizeof(*mi)); | 1275 pcm_unlock(d); |
987 | 1276 |
988 mi->dev = nmix; 989 snprintf(mi->id, sizeof(mi->id), "mixer%d", dev2unit(t_cdev)); 990 strlcpy(mi->name, m->name, sizeof(mi->name)); 991 mi->modify_counter = m->modify_counter; 992 mi->card_number = pcmunit; 993 /* 994 * Currently, FreeBSD assumes 1:1 relationship between a pcm and 995 * mixer devices, so this is hardcoded to 0. 996 */ 997 mi->port_number = 0; | 1277 if (m != NULL) 1278 return (0); 1279 } |
998 | 1280 |
999 /** 1000 * @todo Fill in @sa oss_mixerinfo::mixerhandle. 1001 * @note From 4Front: "mixerhandle is an arbitrary string that 1002 * identifies the mixer better than the device number 1003 * (mixerinfo.dev). Device numbers may change depending on 1004 * the order the drivers are loaded. However the handle 1005 * should remain the same provided that the sound card is 1006 * not moved to another PCI slot." 1007 */ 1008 1009 /** 1010 * @note 1011 * @sa oss_mixerinfo::magic is a reserved field. 1012 * 1013 * @par 1014 * From 4Front: "magic is usually 0. However some devices may have 1015 * dedicated setup utilities and the magic field may contain an 1016 * unique driver specific value (managed by [4Front])." 1017 */ 1018 1019 mi->enabled = device_is_attached(m->dev) ? 1 : 0; 1020 /** 1021 * The only flag for @sa oss_mixerinfo::caps is currently 1022 * MIXER_CAP_VIRTUAL, which I'm not sure we really worry about. 1023 */ 1024 /** 1025 * Mixer extensions currently aren't supported, so leave 1026 * @sa oss_mixerinfo::nrext blank for now. 1027 */ 1028 /** 1029 * @todo Fill in @sa oss_mixerinfo::priority (requires touching 1030 * drivers?) 1031 * @note The priority field is for mixer applets to determine which 1032 * mixer should be the default, with 0 being least preferred and 10 1033 * being most preferred. From 4Front: "OSS drivers like ICH use 1034 * higher values (10) because such chips are known to be used only 1035 * on motherboards. Drivers for high end pro devices use 0 because 1036 * they will never be the default mixer. Other devices use values 1 1037 * to 9 depending on the estimated probability of being the default 1038 * device. 1039 * 1040 * XXX Described by Hannu@4Front, but not found in soundcard.h. 1041 strlcpy(mi->devnode, t_cdev->si_name, sizeof(mi->devnode)); 1042 mi->legacy_device = pcmunit; 1043 */ 1044 1045 mtx_unlock(m->lock); 1046 pcm_unlock(d); 1047 pcm_inprog(d, -1); 1048 1049 return ret; | 1281 return (EINVAL); |
1050} | 1282} |