/*- * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> * Copyright (c) 1995 Hannu Savolainen * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ /* * first, include kernel header files. */ #ifndef _OS_H_ #define _OS_H_ #ifdef _KERNEL #include <sys/param.h> #include <sys/systm.h> #include <sys/ioccom.h> #include <sys/filio.h> #include <sys/sockio.h> #include <sys/fcntl.h> #include <sys/selinfo.h> #include <sys/proc.h> #include <sys/kernel.h> /* for DATA_SET */ #include <sys/module.h> #include <sys/conf.h> #include <sys/file.h> #include <sys/uio.h> #include <sys/syslog.h> #include <sys/errno.h> #include <sys/malloc.h> #include <sys/bus.h> #include <machine/resource.h> #include <machine/bus.h> #include <sys/rman.h> #include <sys/limits.h> #include <sys/mman.h> #include <sys/poll.h> #include <sys/sbuf.h> #include <sys/soundcard.h> #include <sys/sysctl.h> #include <sys/kobj.h> #include <vm/vm.h> #include <vm/pmap.h> #include <sys/lock.h> #include <sys/mutex.h> #include <sys/condvar.h> #ifndef KOBJMETHOD_END #define KOBJMETHOD_END { NULL, NULL } #endif struct pcm_channel; struct pcm_feeder; struct snd_dbuf; struct snd_mixer; #include <dev/sound/pcm/buffer.h> #include <dev/sound/pcm/matrix.h> #include <dev/sound/pcm/matrix_map.h> #include <dev/sound/pcm/channel.h> #include <dev/sound/pcm/feeder.h> #include <dev/sound/pcm/mixer.h> #include <dev/sound/pcm/dsp.h> #include <dev/sound/clone.h> #include <dev/sound/unit.h> #define PCM_SOFTC_SIZE (sizeof(struct snddev_info)) #define SND_STATUSLEN 64 #define SOUND_MODVER 5 #define SOUND_MINVER SOUND_MODVER #define SOUND_PREFVER SOUND_MODVER #define SOUND_MAXVER SOUND_MODVER /* * We're abusing the fact that MAXMINOR still have enough room * for our bit twiddling and nobody ever need 512 unique soundcards, * 32 unique device types and 1024 unique cloneable devices for the * next 100 years... */ #define PCMMAXUNIT (snd_max_u()) #define PCMMAXDEV (snd_max_d()) #define PCMMAXCHAN (snd_max_c()) #define PCMMAXCLONE PCMMAXCHAN #define PCMUNIT(x) (snd_unit2u(dev2unit(x))) #define PCMDEV(x) (snd_unit2d(dev2unit(x))) #define PCMCHAN(x) (snd_unit2c(dev2unit(x))) /* XXX unit2minor compat */ #define PCMMINOR(x) (x) /* * By design, limit possible channels for each direction. */ #define SND_MAXHWCHAN 256 #define SND_MAXVCHANS SND_MAXHWCHAN #define SD_F_SIMPLEX 0x00000001 #define SD_F_AUTOVCHAN 0x00000002 #define SD_F_SOFTPCMVOL 0x00000004 /* * Obsolete due to better matrixing */ #if 0 #define SD_F_PSWAPLR 0x00000008 #define SD_F_RSWAPLR 0x00000010 #endif #define SD_F_DYING 0x00000008 #define SD_F_SUICIDE 0x00000010 #define SD_F_BUSY 0x00000020 #define SD_F_MPSAFE 0x00000040 #define SD_F_REGISTERED 0x00000080 #define SD_F_BITPERFECT 0x00000100 #define SD_F_VPC 0x00000200 /* volume-per-channel */ #define SD_F_EQ 0x00000400 /* EQ */ #define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */ #define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */ #define SD_F_EQ_PC 0x00002000 /* EQ per-channel */ #define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED) #define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \ SD_F_EQ_BYPASSED | SD_F_EQ_PC) #define SD_F_PRIO_RD 0x10000000 #define SD_F_PRIO_WR 0x20000000 #define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR) #define SD_F_DIR_SET 0x40000000 #define SD_F_TRANSIENT 0xf0000000 #define SD_F_BITS "\020" \ "\001SIMPLEX" \ "\002AUTOVCHAN" \ "\003SOFTPCMVOL" \ "\004DYING" \ "\005SUICIDE" \ "\006BUSY" \ "\007MPSAFE" \ "\010REGISTERED" \ "\011BITPERFECT" \ "\012VPC" \ "\013EQ" \ "\014EQ_ENABLED" \ "\015EQ_BYPASSED" \ "\016EQ_PC" \ "\035PRIO_RD" \ "\036PRIO_WR" \ "\037DIR_SET" #define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \ !((x)->flags & SD_F_DYING)) #define PCM_REGISTERED(x) (PCM_ALIVE(x) && \ ((x)->flags & SD_F_REGISTERED)) /* many variables should be reduced to a range. Here define a macro */ #define RANGE(var, low, high) (var) = \ (((var)<(low))? (low) : ((var)>(high))? (high) : (var)) #define DSP_BUFFSIZE (8192) /* make figuring out what a format is easier. got AFMT_STEREO already */ #define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE) #define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE) #define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE) #define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW) #define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8) #define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \ AFMT_S16_LE | AFMT_S16_BE | AFMT_S8) #define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \ AFMT_S16_BE | AFMT_U16_BE) #define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \ AFMT_32BIT) /* Supported vchan mixing formats */ #define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711) #define AFMT_PASSTHROUGH AFMT_AC3 #define AFMT_PASSTHROUGH_RATE 48000 #define AFMT_PASSTHROUGH_CHANNEL 2 #define AFMT_PASSTHROUGH_EXTCHANNEL 0 /* * We're simply using unused, contiguous bits from various AFMT_ definitions. * ~(0xb00ff7ff) */ #define AFMT_ENCODING_MASK 0xf00fffff #define AFMT_CHANNEL_MASK 0x07f00000 #define AFMT_CHANNEL_SHIFT 20 #define AFMT_CHANNEL_MAX 0x7f #define AFMT_EXTCHANNEL_MASK 0x08000000 #define AFMT_EXTCHANNEL_SHIFT 27 #define AFMT_EXTCHANNEL_MAX 1 #define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK) #define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \ AFMT_EXTCHANNEL_SHIFT) #define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \ AFMT_CHANNEL_SHIFT) #define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \ (((v) & AFMT_24BIT) ? 24 : \ ((((v) & AFMT_16BIT) || \ ((v) & AFMT_PASSTHROUGH)) ? 16 : 8))) #define AFMT_BPS(v) (AFMT_BIT(v) >> 3) #define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v)) #define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \ (((c) << AFMT_CHANNEL_SHIFT) & \ AFMT_CHANNEL_MASK) | \ (((e) << AFMT_EXTCHANNEL_SHIFT) & \ AFMT_EXTCHANNEL_MASK)) #define AFMT_U8_NE AFMT_U8 #define AFMT_S8_NE AFMT_S8 #define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE) #define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \ AFMT_U24_NE | AFMT_U32_NE) /* * Minor numbers for the sound driver. * * Unfortunately Creative called the codec chip of SB as a DSP. For this * reason the /dev/dsp is reserved for digitized audio use. There is a * device for true DSP processors but it will be called something else. * In v3.0 it's /dev/sndproc but this could be a temporary solution. */ #define SND_DEV_CTL 0 /* Control port /dev/mixer */ #define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */ #define SND_DEV_MIDIN 2 /* Raw midi access */ #define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */ #define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */ #define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */ #define SND_DEV_STATUS 6 /* /dev/sndstat */ /* #7 not in use now. */ #define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */ #define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */ #define SND_DEV_PSS SND_DEV_SNDPROC /* ? */ #define SND_DEV_NORESET 10 #define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */ #define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */ #define SND_DEV_DSPHW_REC 13 /* specific record channel */ #define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */ #define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */ /* * OSSv4 compatible device. For now, it serve no purpose and * the cloning itself will forward the request to ordinary /dev/dsp * instead. */ #define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */ #define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */ #define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */ #define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */ #define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */ #define SND_DEV_LAST SND_DEV_DSP_SPDIFIN #define SND_DEV_MAX PCMMAXDEV #define DSP_DEFAULT_SPEED 8000 #define ON 1 #define OFF 0 extern int pcm_veto_load; extern int snd_unit; extern int snd_maxautovchans; extern int snd_verbose; extern devclass_t pcm_devclass; extern struct unrhdr *pcmsg_unrhdr; /* * some macros for debugging purposes * DDB/DEB to enable/disable debugging stuff * BVDDB to enable debugging when bootverbose */ #define BVDDB(x) if (bootverbose) x #ifndef DEB #define DEB(x) #endif SYSCTL_DECL(_hw_snd); int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num); int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, pid_t pid, char *comm, int devunit); int pcm_chnrelease(struct pcm_channel *c); int pcm_chnref(struct pcm_channel *c, int ref); int pcm_inprog(struct snddev_info *d, int delta); struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo); int pcm_chn_destroy(struct pcm_channel *ch); int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch); int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch); int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo); unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz); int pcm_register(device_t dev, void *devinfo, int numplay, int numrec); int pcm_unregister(device_t dev); int pcm_setstatus(device_t dev, char *str); u_int32_t pcm_getflags(device_t dev); void pcm_setflags(device_t dev, u_int32_t val); void *pcm_getdevinfo(device_t dev); int snd_setup_intr(device_t dev, struct resource *res, int flags, driver_intr_t hand, void *param, void **cookiep); void *snd_mtxcreate(const char *desc, const char *type); void snd_mtxfree(void *m); void snd_mtxassert(void *m); #define snd_mtxlock(m) mtx_lock(m) #define snd_mtxunlock(m) mtx_unlock(m) typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose); int sndstat_register(device_t dev, char *str, sndstat_handler handler); int sndstat_registerfile(char *str); int sndstat_unregister(device_t dev); int sndstat_unregisterfile(char *str); #define SND_DECLARE_FILE(version) \ _SND_DECLARE_FILE(__LINE__, version) #define _SND_DECLARE_FILE(uniq, version) \ __SND_DECLARE_FILE(uniq, version) #define __SND_DECLARE_FILE(uniq, version) \ static char sndstat_vinfo[] = version; \ SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \ SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo); /* usage of flags in device config entry (config file) */ #define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */ #define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */ /* ought to be made obsolete but still used by mss */ #define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */ #define DV_F_DEV_SHIFT 8 /* force device type/class */ /* * this is rather kludgey- we need to duplicate these struct def'ns from sound.c * so that the macro versions of pcm_{,un}lock can dereference them. * we also have to do this now makedev() has gone away. */ struct snddev_info { struct { struct { SLIST_HEAD(, pcm_channel) head; struct { SLIST_HEAD(, pcm_channel) head; } busy; struct { SLIST_HEAD(, pcm_channel) head; } opened; } pcm; } channels; TAILQ_HEAD(dsp_cdevinfo_linkhead, dsp_cdevinfo) dsp_cdevinfo_pool; struct snd_clone *clones; unsigned devcount, playcount, reccount, pvchancount, rvchancount ; unsigned flags; int inprog; unsigned int bufsz; void *devinfo; device_t dev; char status[SND_STATUSLEN]; struct mtx *lock; struct cdev *mixer_dev; uint32_t pvchanrate, pvchanformat; uint32_t rvchanrate, rvchanformat; int32_t eqpreamp; struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx; struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree; struct cv cv; }; void sound_oss_sysinfo(oss_sysinfo *); int sound_oss_card_info(oss_card_info *); #define PCM_LOCKOWNED(d) mtx_owned((d)->lock) #define PCM_LOCK(d) mtx_lock((d)->lock) #define PCM_UNLOCK(d) mtx_unlock((d)->lock) #define PCM_TRYLOCK(d) mtx_trylock((d)->lock) #define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED) #define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED) /* * For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these * with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you! */ #ifdef SND_DIAGNOSTIC #define PCM_WAIT(x) do { \ if (!PCM_LOCKOWNED(x)) \ panic("%s(%d): [PCM WAIT] Mutex not owned!", \ __func__, __LINE__); \ while ((x)->flags & SD_F_BUSY) { \ if (snd_verbose > 3) \ device_printf((x)->dev, \ "%s(%d): [PCM WAIT] calling cv_wait().\n", \ __func__, __LINE__); \ cv_wait(&(x)->cv, (x)->lock); \ } \ } while (0) #define PCM_ACQUIRE(x) do { \ if (!PCM_LOCKOWNED(x)) \ panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \ __func__, __LINE__); \ if ((x)->flags & SD_F_BUSY) \ panic("%s(%d): [PCM ACQUIRE] " \ "Trying to acquire BUSY cv!", __func__, __LINE__); \ (x)->flags |= SD_F_BUSY; \ } while (0) #define PCM_RELEASE(x) do { \ if (!PCM_LOCKOWNED(x)) \ panic("%s(%d): [PCM RELEASE] Mutex not owned!", \ __func__, __LINE__); \ if ((x)->flags & SD_F_BUSY) { \ (x)->flags &= ~SD_F_BUSY; \ if ((x)->cv.cv_waiters != 0) { \ if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \ device_printf((x)->dev, \ "%s(%d): [PCM RELEASE] " \ "cv_waiters=%d > 1!\n", \ __func__, __LINE__, \ (x)->cv.cv_waiters); \ cv_broadcast(&(x)->cv); \ } \ } else \ panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ __func__, __LINE__); \ } while (0) /* Quick version, for shorter path. */ #define PCM_ACQUIRE_QUICK(x) do { \ if (PCM_LOCKOWNED(x)) \ panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \ __func__, __LINE__); \ PCM_LOCK(x); \ PCM_WAIT(x); \ PCM_ACQUIRE(x); \ PCM_UNLOCK(x); \ } while (0) #define PCM_RELEASE_QUICK(x) do { \ if (PCM_LOCKOWNED(x)) \ panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \ __func__, __LINE__); \ PCM_LOCK(x); \ PCM_RELEASE(x); \ PCM_UNLOCK(x); \ } while (0) #define PCM_BUSYASSERT(x) do { \ if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \ panic("%s(%d): [PCM BUSYASSERT] " \ "Failed, snddev_info=%p", __func__, __LINE__, x); \ } while (0) #define PCM_GIANT_ENTER(x) do { \ int _pcm_giant = 0; \ if (PCM_LOCKOWNED(x)) \ panic("%s(%d): [GIANT ENTER] PCM lock owned!", \ __func__, __LINE__); \ if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ device_printf((x)->dev, \ "%s(%d): [GIANT ENTER] Giant owned!\n", \ __func__, __LINE__); \ if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ do { \ mtx_lock(&Giant); \ _pcm_giant = 1; \ } while (0) #define PCM_GIANT_EXIT(x) do { \ if (PCM_LOCKOWNED(x)) \ panic("%s(%d): [GIANT EXIT] PCM lock owned!", \ __func__, __LINE__); \ if (!(_pcm_giant == 0 || _pcm_giant == 1)) \ panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ __func__, __LINE__); \ if ((x)->flags & SD_F_MPSAFE) { \ if (_pcm_giant == 1) \ panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ __func__, __LINE__); \ if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ device_printf((x)->dev, \ "%s(%d): [GIANT EXIT] Giant owned!\n", \ __func__, __LINE__); \ } \ if (_pcm_giant != 0) { \ if (mtx_owned(&Giant) == 0) \ panic("%s(%d): [GIANT EXIT] Giant not owned!", \ __func__, __LINE__); \ _pcm_giant = 0; \ mtx_unlock(&Giant); \ } \ } while (0) #else /* SND_DIAGNOSTIC */ #define PCM_WAIT(x) do { \ PCM_LOCKASSERT(x); \ while ((x)->flags & SD_F_BUSY) \ cv_wait(&(x)->cv, (x)->lock); \ } while (0) #define PCM_ACQUIRE(x) do { \ PCM_LOCKASSERT(x); \ KASSERT(!((x)->flags & SD_F_BUSY), \ ("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \ __func__, __LINE__)); \ (x)->flags |= SD_F_BUSY; \ } while (0) #define PCM_RELEASE(x) do { \ PCM_LOCKASSERT(x); \ KASSERT((x)->flags & SD_F_BUSY, \ ("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ __func__, __LINE__)); \ (x)->flags &= ~SD_F_BUSY; \ if ((x)->cv.cv_waiters != 0) \ cv_broadcast(&(x)->cv); \ } while (0) /* Quick version, for shorter path. */ #define PCM_ACQUIRE_QUICK(x) do { \ PCM_UNLOCKASSERT(x); \ PCM_LOCK(x); \ PCM_WAIT(x); \ PCM_ACQUIRE(x); \ PCM_UNLOCK(x); \ } while (0) #define PCM_RELEASE_QUICK(x) do { \ PCM_UNLOCKASSERT(x); \ PCM_LOCK(x); \ PCM_RELEASE(x); \ PCM_UNLOCK(x); \ } while (0) #define PCM_BUSYASSERT(x) KASSERT(x != NULL && \ ((x)->flags & SD_F_BUSY), \ ("%s(%d): [PCM BUSYASSERT] " \ "Failed, snddev_info=%p", \ __func__, __LINE__, x)) #define PCM_GIANT_ENTER(x) do { \ int _pcm_giant = 0; \ PCM_UNLOCKASSERT(x); \ if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ do { \ mtx_lock(&Giant); \ _pcm_giant = 1; \ } while (0) #define PCM_GIANT_EXIT(x) do { \ PCM_UNLOCKASSERT(x); \ KASSERT(_pcm_giant == 0 || _pcm_giant == 1, \ ("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ __func__, __LINE__)); \ KASSERT(!((x)->flags & SD_F_MPSAFE) || \ (((x)->flags & SD_F_MPSAFE) && _pcm_giant == 0), \ ("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ __func__, __LINE__)); \ if (_pcm_giant != 0) { \ mtx_assert(&Giant, MA_OWNED); \ _pcm_giant = 0; \ mtx_unlock(&Giant); \ } \ } while (0) #endif /* !SND_DIAGNOSTIC */ #define PCM_GIANT_LEAVE(x) \ PCM_GIANT_EXIT(x); \ } while (0) #ifdef KLD_MODULE #define PCM_KLDSTRING(a) ("kld " # a) #else #define PCM_KLDSTRING(a) "" #endif #endif /* _KERNEL */ #endif /* _OS_H_ */