diff options
author | jkh <jkh@FreeBSD.org> | 1995-03-05 08:10:28 +0000 |
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committer | jkh <jkh@FreeBSD.org> | 1995-03-05 08:10:28 +0000 |
commit | 5b1befcfaa563fe7abc942457de15ad37482939c (patch) | |
tree | 7dfc8a8a0591399ee0d8d10f3261597f29080890 /sys/i386/isa | |
parent | e07b647f3fa723cd93a7c1fdc508536d4fba5abb (diff) | |
download | FreeBSD-src-5b1befcfaa563fe7abc942457de15ad37482939c.zip FreeBSD-src-5b1befcfaa563fe7abc942457de15ad37482939c.tar.gz |
Have dmabuf.c match the roll-back in soundcard.c. We should be making
better noises again.
Submitted by: Sujal Patel <smpatel@wam.umd.edu>
Diffstat (limited to 'sys/i386/isa')
-rw-r--r-- | sys/i386/isa/sound/Readme.freebsd | 3 | ||||
-rw-r--r-- | sys/i386/isa/sound/dmabuf.c | 116 | ||||
-rw-r--r-- | sys/i386/isa/sound/local.h | 6 |
3 files changed, 105 insertions, 20 deletions
diff --git a/sys/i386/isa/sound/Readme.freebsd b/sys/i386/isa/sound/Readme.freebsd index 4dd5122..03f96f4 100644 --- a/sys/i386/isa/sound/Readme.freebsd +++ b/sys/i386/isa/sound/Readme.freebsd @@ -11,7 +11,7 @@ device snd3 at isa? port 0x388 irq 10 drq 6 vector pasintr # PAS device snd2 at isa? port 0x220 irq 7 drq 1 vector sbintr # SB device snd6 at isa? port 0x220 irq 7 drq 5 vector sbintr # SB16 ? device snd7 at isa? port 0x300 # YM3812 ??? -device snd1 at isa? port 0x388 # ADLIB +device snd1 at isa? port 0x388 # YM3812 device snd10 at isa? port 0x530 irq 10 drq 1 vector adintr # MSS Then add some of these (no need for EXCLUDE_BLAH anymore): @@ -20,7 +20,6 @@ Then add some of these (no need for EXCLUDE_BLAH anymore): options AUDIO_PAS options AUDIO_SB -options AUDIO_ADLIB options AUDIO_GUS options AUDIO_MPU401 options AUDIO_UART6850 diff --git a/sys/i386/isa/sound/dmabuf.c b/sys/i386/isa/sound/dmabuf.c index 10ab0ba..e75ac12 100644 --- a/sys/i386/isa/sound/dmabuf.c +++ b/sys/i386/isa/sound/dmabuf.c @@ -25,6 +25,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * + * $Id: dmabuf.c,v 1.11 1995/02/13 22:49:04 jkh Exp $ */ #include "sound_config.h" @@ -32,16 +33,20 @@ #ifdef CONFIGURE_SOUNDCARD #include "sound_calls.h" +#ifdef __FreeBSD__ +#include <machine/soundcard.h> +extern struct selinfo selinfo[SND_NDEVS>>4]; +#endif #if !defined(EXCLUDE_AUDIO) || !defined(EXCLUDE_GUS) DEFINE_WAIT_QUEUES (dev_sleeper[MAX_AUDIO_DEV], dev_sleep_flag[MAX_AUDIO_DEV]); static struct dma_buffparms dmaps[MAX_AUDIO_DEV] = -{{0}}; /* +{0}; /* * Primitive way to allocate * such a large array. - * Needs dynamic run-time allocation. + * Needs dynamic run-time alloction. */ static void @@ -78,7 +83,7 @@ reorganize_buffers (int dev) sz = sr * nc * sz; /* - * Compute a buffer size for time not exceeding 1 second. + * Compute a buffer size for time not exeeding 1 second. * Usually this algorithm gives a buffer size for 0.5 to 1.0 seconds * of sound (using the current speed, sample size and #channels). */ @@ -106,8 +111,8 @@ reorganize_buffers (int dev) else { /* - * The process has specified the buffer size with SNDCTL_DSP_SETFRAGMENT or - * the buffer size computation has already been done. + * The process has specified the buffer sice with SNDCTL_DSP_SETFRAGMENT or + * the buffer sice computation has already been done. */ if (dmap->fragment_size > audio_devs[dev]->buffsize) dmap->fragment_size = audio_devs[dev]->buffsize; @@ -294,11 +299,10 @@ DMAbuf_release (int dev, int mode) return 0; } -int -DMAbuf_getrdbuffer (int dev, char **buf, int *len) +static int +DMAbuf_start_input(int dev) { unsigned long flags; - int err = EIO; struct dma_buffparms *dmap = audio_devs[dev]->dmap; DISABLE_INTR (flags); @@ -320,7 +324,7 @@ DMAbuf_getrdbuffer (int dev, char **buf, int *len) if (!(dmap->flags & DMA_ALLOC_DONE)) reorganize_buffers (dev); - if (!dmap->dma_mode) + if (dmap->dma_mode) { int err; @@ -341,14 +345,32 @@ DMAbuf_getrdbuffer (int dev, char **buf, int *len) !(dmap->flags & DMA_STARTED)); dmap->flags |= DMA_ACTIVE | DMA_STARTED; } + } + RESTORE_INTR (flags); + + return 0; +} + +int +DMAbuf_getrdbuffer (int dev, char **buf, int *len) +{ + unsigned long flags; + int err = EIO; + struct dma_buffparms *dmap = audio_devs[dev]->dmap; + + DISABLE_INTR (flags); + if (!dmap->qlen) + { + if(err = DMAbuf_start_input(dev)) + return err; /* Wait for the next block */ + err = EIO; DO_SLEEP (dev_sleeper[dev], dev_sleep_flag[dev], 2 * HZ); if (TIMED_OUT (dev_sleeper[dev], dev_sleep_flag[dev])) { printk ("Sound: DMA timed out - IRQ/DRQ config error?\n"); - err = EIO; SET_ABORT_FLAG (dev_sleeper[dev], dev_sleep_flag[dev]); } else @@ -425,7 +447,7 @@ DMAbuf_ioctl (int dev, unsigned int cmd, unsigned int arg, int local) } if (dmap->subdivision != 0 || - dmap->fragment_size)/* Too late to change */ + dmap->fragment_size)/* Loo late to change */ return RET_ERROR (EINVAL); if (fact > MAX_REALTIME_FACTOR) @@ -448,7 +470,7 @@ DMAbuf_ioctl (int dev, unsigned int cmd, unsigned int arg, int local) return RET_ERROR (EIO); if (dmap->subdivision != 0 || - dmap->fragment_size)/* Too late to change */ + dmap->fragment_size)/* Loo late to change */ return RET_ERROR (EINVAL); bytes = fact & 0xffff; @@ -482,6 +504,7 @@ DMAbuf_ioctl (int dev, unsigned int cmd, unsigned int arg, int local) return audio_devs[dev]->ioctl (dev, cmd, arg, local); } + /* NOTREACHED */ return RET_ERROR (EIO); } @@ -782,6 +805,10 @@ DMAbuf_outputintr (int dev, int event_type) WAKE_UP (dev_sleeper[dev], dev_sleep_flag[dev]); } RESTORE_INTR (flags); +#ifdef __FreeBSD__ + if(selinfo[dev].si_pid) + selwakeup(&selinfo[dev]); +#endif } void @@ -821,6 +848,10 @@ DMAbuf_inputintr (int dev) WAKE_UP (dev_sleeper[dev], dev_sleep_flag[dev]); } RESTORE_INTR (flags); +#ifdef __FreeBSD__ + if(selinfo[dev].si_pid) + selwakeup(&selinfo[dev]); +#endif } int @@ -860,6 +891,49 @@ DMAbuf_reset_dma (int chan) } /* + * Used by unix select system call to see if data is ready. + */ +int +DMAbuf_output_ready(int dev) +{ + struct dma_buffparms *dmap = audio_devs[dev]->dmap; + + if (!(dmap->flags & DMA_ALLOC_DONE)) + reorganize_buffers (dev); + return space_in_queue (dev); +} +int +DMAbuf_input_ready(int dev) +{ + int h,i,r; + struct dma_buffparms *dmap = audio_devs[dev]->dmap; + + r = 0; + if(dmap->qlen) + { + if(dmap->fragment_size) + { + for(i=0; i<dmap->qlen; i++) + { + h = (dmap->qhead + i) % dmap->nbufs; + r += dmap->fragment_size - dmap->counts[h]; + if(r >= dmap->fragment_size) + break; + } + if(r < dmap->fragment_size) + r = 0; + else + r = 1; + } + else + r = 1; + } + else + DMAbuf_start_input(dev); + + return(r); +} +/* * The sound_mem_init() is called by mem_init() immediately after mem_map is * initialized and before free_page_list is created. * @@ -885,6 +959,24 @@ DMAbuf_release (int dev, int mode) } int +DMAbuf_start_input (int dev) +{ + return RET_ERROR (EIO); +} + +int +DMAbuf_input_ready (int dev) +{ + return 0; +} + +int +DMAbuf_output_ready (int dev) +{ + return 0; +} + +int DMAbuf_getwrbuffer (int dev, char **buf, int *size) { return RET_ERROR (EIO); diff --git a/sys/i386/isa/sound/local.h b/sys/i386/isa/sound/local.h index 43ca03e..479b706 100644 --- a/sys/i386/isa/sound/local.h +++ b/sys/i386/isa/sound/local.h @@ -37,9 +37,6 @@ #ifndef EXCLUDE_SB #define EXCLUDE_SB #endif -#ifndef EXCLUDE_ADLIB -#define EXCLUDE_ADLIB -#endif #ifndef EXCLUDE_GUS #define EXCLUDE_GUS #endif @@ -77,9 +74,6 @@ #ifdef AUDIO_SB #undef EXCLUDE_SB #endif -#ifdef AUDIO_ADLIB -#undef EXCLUDE_ADLIB -#endif #ifdef AUDIO_GUS #undef EXCLUDE_GUS #endif |