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/*
* sound/386bsd/soundcard.c
*
* Soundcard driver for FreeBSD.
*
* Copyright by Hannu Savolainen 1993
*
* 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.
*
*/
#include "sound_config.h"
#ifdef CONFIGURE_SOUNDCARD
#include "dev_table.h"
int __timeout_val = 0;
int __process_aborting = 0;
u_int snd1mask;
u_int snd2mask;
u_int snd3mask;
u_int snd4mask;
u_int snd5mask;
struct sbc_device
{
int usecount;
};
#define FIX_RETURN(ret) {if ((ret)<0) return -(ret); else return 0;}
static struct sbc_device sbc_devices[SND_NDEVS];
static int timer_running = 0;
static int in_use = 0; /* Total # of open device files (excluding
* minor 0) */
static int soundcards_installed = 0; /* Number of installed
* soundcards */
static int soundcard_configured = 0;
extern char *snd_raw_buf[MAX_DSP_DEV][DSP_BUFFCOUNT];
extern unsigned long snd_raw_buf_phys[MAX_DSP_DEV][DSP_BUFFCOUNT];
extern int snd_raw_count[MAX_DSP_DEV];
static struct fileinfo files[SND_NDEVS];
int sndprobe (struct isa_device *dev);
int sndattach (struct isa_device *dev);
int sndopen (dev_t dev, int flags);
int sndclose (dev_t dev, int flags);
int sndioctl (dev_t dev, int cmd, caddr_t arg, int mode);
int sndread (int dev, struct uio *uio);
int sndwrite (int dev, struct uio *uio);
int sndselect (int dev, int rw);
static void sound_mem_init(void);
int
get_time()
{
extern struct timeval time;
return(time.tv_usec + (time.tv_sec*1000000));
}
int
sndread (int dev, struct uio *buf)
{
int count = buf->uio_resid;
dev = minor (dev);
DEB (printk ("sound_read(dev=%d, count=%d)\n", dev, count));
switch (dev & 0x0f) /* It really has to be 0x0f */
{
case SND_DEV_AUDIO:
FIX_RETURN (audio_read (dev, &files[dev], buf, count));
break;
case SND_DEV_DSP:
case SND_DEV_DSP16:
FIX_RETURN (dsp_read (dev, &files[dev], buf, count));
break;
case SND_DEV_SEQ:
FIX_RETURN (sequencer_read (dev, &files[dev], buf, count));
break;
#ifndef EXCLUDE_CHIP_MIDI
case CMIDI_DEV_PRO:
FIX_RETURN (CMIDI_read (dev, &files[dev], buf, count));
break;
#endif
#ifndef EXCLUDE_MPU401
case SND_DEV_MIDIN:
FIX_RETURN (MIDIbuf_read (dev, &files[dev], buf, count));
#endif
default:
;
}
FIX_RETURN (-EPERM);
}
int
sndwrite (int dev, struct uio *buf)
{
int count = buf->uio_resid;
DEB (printk ("sound_write(dev=%d, count=%d)\n", dev, count));
dev = minor (dev);
switch (dev & 0x0f) /* It really has to be 0x0f */
{
case SND_DEV_SEQ:
FIX_RETURN (sequencer_write (dev, &files[dev], buf, count));
break;
case SND_DEV_AUDIO:
FIX_RETURN (audio_write (dev, &files[dev], buf, count));
break;
case SND_DEV_DSP:
case SND_DEV_DSP16:
FIX_RETURN (dsp_write (dev, &files[dev], buf, count));
break;
#ifndef EXCLUDE_CHIP_MIDI
case CMIDI_DEV_PRO:
FIX_RETURN (CMIDI_write (dev, &files[dev], buf, count));
break;
#endif
default:
FIX_RETURN (-EPERM);
}
FIX_RETURN (count);
}
int
sndopen (dev_t dev, int flags)
{
int retval;
dev = minor (dev);
/* printf("SND: Minor number is now : %ld\n",dev); */
DEB (printk ("sound_open(dev=%d) : usecount=%d\n", dev, sbc_devices[dev].usecount));
if ((dev >= SND_NDEVS) || (dev < 0))
{
printk ("Invalid minor device %d\n", dev);
FIX_RETURN (-ENODEV);
}
if (!soundcard_configured && dev)
{
printk ("SoundCard Error: The soundcard system has not been configured\n");
FIX_RETURN (-ENODEV);
}
files[dev].mode = 0;
if (flags & FREAD && flags & FWRITE)
files[dev].mode = OPEN_READWRITE;
else if (flags & FREAD)
files[dev].mode = OPEN_READ;
else if (flags & FWRITE)
files[dev].mode = OPEN_WRITE;
switch (dev & 0x0f) /* It has to be 0x0f. Trust me */
{
case SND_DEV_CTL:
if (!soundcards_installed)
if (soundcard_configured)
{
printk ("Soundcard not installed\n");
FIX_RETURN (-ENODEV);
}
break;
case SND_DEV_SEQ:
if ((retval = sequencer_open (dev, &files[dev])) < 0)
FIX_RETURN (retval);
break;
/** UWM stuff **/
#ifndef EXCLUDE_CHIP_MIDI
case CMIDI_DEV_PRO:
FIX_RETURN ( CMIDI_open (dev, &files[dev]) );
break;
#endif
#ifndef EXCLUDE_MPU401
case SND_DEV_MIDIN:
if ((retval = MIDIbuf_open (dev, &files[dev])) < 0)
FIX_RETURN (retval);
break;
#endif
case SND_DEV_AUDIO:
if ((retval = audio_open (dev, &files[dev])) < 0)
FIX_RETURN (retval);
break;
case SND_DEV_DSP:
if ((retval = dsp_open (dev, &files[dev], 8)) < 0)
FIX_RETURN (retval);
break;
case SND_DEV_DSP16:
if ((retval = dsp_open (dev, &files[dev], 16)) < 0)
FIX_RETURN (retval);
break;
default:
printk ("Invalid minor device %d\n", dev);
FIX_RETURN (-ENODEV);
}
sbc_devices[dev].usecount++;
in_use++;
FIX_RETURN (0);
}
int
sndclose (dev_t dev, int flags)
{
dev = minor (dev);
DEB (printk ("sound_release(dev=%d)\n", dev));
switch (dev & 0x0f) /* Has to be 0x0f */
{
case SND_DEV_SEQ:
sequencer_release (dev, &files[dev]);
break;
#ifndef EXCLUDE_CHIP_MIDI
case CMIDI_DEV_PRO:
CMIDI_close (dev, &files[dev]);
break;
#endif
#ifndef EXCLUDE_MPU401
case SND_DEV_MIDIN:
MIDIbuf_release (dev, &files[dev]);
break;
#endif
case SND_DEV_AUDIO:
audio_release (dev, &files[dev]);
break;
case SND_DEV_DSP:
case SND_DEV_DSP16:
dsp_release (dev, &files[dev]);
break;
default:;
}
sbc_devices[dev].usecount--;
in_use--; /* If not control port */
FIX_RETURN (0);
}
int
sndioctl (dev_t dev, int cmd, caddr_t arg, int mode)
{
dev = minor (dev);
DEB (printk ("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg));
switch (dev & 0x0f)
{
case SND_DEV_CTL:
if (!num_mixers)
FIX_RETURN (-ENODEV);
if (dev >= num_mixers)
FIX_RETURN (-ENODEV);
FIX_RETURN (mixer_devs[dev]->ioctl (dev, cmd, (unsigned int) arg));
break;
case SND_DEV_SEQ:
FIX_RETURN (sequencer_ioctl (dev, &files[dev], cmd, (unsigned int) arg));
break;
case SND_DEV_AUDIO:
FIX_RETURN (audio_ioctl (dev, &files[dev], cmd, (unsigned int) arg));
break;
case SND_DEV_DSP:
case SND_DEV_DSP16:
FIX_RETURN (dsp_ioctl (dev, &files[dev], cmd, (unsigned int) arg));
break;
#ifndef EXCLUDE_MPU401
case SND_DEV_MIDIN:
FIX_RETURN (MIDIbuf_ioctl (dev, &files[dev], cmd, (unsigned int) arg));
break;
#endif
default:
FIX_RETURN (-EPERM);
break;
}
FIX_RETURN (-EPERM);
}
int
sndselect (int dev, int rw)
{
dev = minor (dev);
DEB (printk ("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg));
FIX_RETURN (0);
}
static unsigned short
ipri_to_irq (unsigned short ipri)
{
/*
* Converts the ipri (bitmask) to the corresponding irq number
*/
int irq;
for (irq = 0; irq < 16; irq++)
if (ipri == (1 << irq))
return irq;
return -1; /* Invalid argument */
}
int
sndprobe (struct isa_device *dev)
{
struct address_info hw_config;
hw_config.io_base = dev->id_iobase;
hw_config.irq = ipri_to_irq (dev->id_irq);
hw_config.dma = dev->id_drq;
return sndtable_probe (dev->id_unit, &hw_config);
}
int
sndattach (struct isa_device *dev)
{
int i;
static int dsp_initialized = 0;
static int midi_initialized = 0;
static int seq_initialized = 0;
static int generic_midi_initialized = 0;
unsigned long mem_start = 0xefffffff;
struct address_info hw_config;
hw_config.io_base = dev->id_iobase;
hw_config.irq = ipri_to_irq (dev->id_irq);
hw_config.dma = dev->id_drq;
if (dev->id_unit) /* Card init */
if (!sndtable_init_card (dev->id_unit, &hw_config))
{
printf (" <Driver not configured>");
return FALSE;
}
/*
* Init the high level sound driver
*/
if (!(soundcards_installed = sndtable_get_cardcount ()))
{
printf (" <No such hardware>");
return FALSE; /* No cards detected */
}
printf("\n");
#ifndef EXCLUDE_AUDIO
soundcard_configured = 1;
if (num_dspdevs)
sound_mem_init ();
#endif
if (num_dspdevs && !dsp_initialized) /* Audio devices present */
{
dsp_initialized = 1;
mem_start = DMAbuf_init (mem_start);
mem_start = audio_init (mem_start);
mem_start = dsp_init (mem_start);
}
/** UWM stuff **/
#ifndef EXCLUDE_CHIP_MIDI
if (!generic_midi_initialized)
{
generic_midi_initialized = 1;
mem_start = CMIDI_init (mem_start);
}
#endif
#ifndef EXCLUDE_MPU401
if (num_midis && !midi_initialized)
{
midi_initialized = 1;
mem_start = MIDIbuf_init (mem_start);
}
#endif
if ((num_midis + num_synths) && !seq_initialized)
{
seq_initialized = 1;
mem_start = sequencer_init (mem_start);
}
for (i = 0; i < SND_NDEVS; i++)
{
sbc_devices[i].usecount = 0;
}
return TRUE;
}
void
tenmicrosec (void)
{
int i;
for (i = 0; i < 16; i++)
inb (0x80);
}
#ifdef EXCLUDE_GUS
void
gusintr (int unit)
{
return (0);
}
#endif
void
request_sound_timer (int count)
{
static int current = 0;
int tmp = count;
if (count < 0)
timeout (sequencer_timer, 0, -count);
else
{
if (count < current)
current = 0; /* Timer restarted */
count = count - current;
current = tmp;
if (!count)
count = 1;
timeout (sequencer_timer, 0, count);
}
timer_running = 1;
}
void
sound_stop_timer (void)
{
if (timer_running)
untimeout (sequencer_timer, 0);
timer_running = 0;
}
#ifndef EXCLUDE_AUDIO
static void
sound_mem_init (void)
{
int i, dev;
unsigned long dma_pagesize;
static unsigned long dsp_init_mask = 0;
for (dev = 0; dev < num_dspdevs; dev++) /* Enumerate devices */
if (!(dsp_init_mask & (1 << dev))) /* Not already done */
if (sound_buffcounts[dev] > 0 && sound_dsp_dmachan[dev] > 0)
{
dsp_init_mask |= (1 << dev);
if (sound_dma_automode[dev])
{
sound_dma_automode[dev] = 0; /* Not possible with FreeBSD */
}
if (sound_buffcounts[dev] == 1)
{
sound_buffcounts[dev] = 2;
sound_buffsizes[dev] /= 2;
}
if (sound_buffsizes[dev] > 65536) /* Larger is not possible (yet) */
sound_buffsizes[dev] = 65536;
if (sound_dsp_dmachan[dev] > 3 && sound_buffsizes[dev] > 65536)
dma_pagesize = 131072; /* 128k */
else
dma_pagesize = 65536;
/* More sanity checks */
if (sound_buffsizes[dev] > dma_pagesize)
sound_buffsizes[dev] = dma_pagesize;
sound_buffsizes[dev] &= 0xfffff000; /* Truncate to n*4k */
if (sound_buffsizes[dev] < 4096)
sound_buffsizes[dev] = 4096;
/* Now allocate the buffers */
for (snd_raw_count[dev] = 0; snd_raw_count[dev] < sound_buffcounts[dev]; snd_raw_count[dev]++)
{
/*
* The DMA buffer allocation algorithm hogs memory. We allocate
* a memory area which is two times the requires size. This
* guarantees that it contains at least one valid DMA buffer.
*
* This really needs some kind of finetuning.
*/
char *tmpbuf = malloc (2*sound_buffsizes[dev], M_DEVBUF, M_NOWAIT);
unsigned long addr, rounded;
if (tmpbuf == NULL)
{
printk ("snd: Unable to allocate %d bytes of buffer\n",
2 * sound_buffsizes[dev]);
return;
}
addr = kvtop (tmpbuf);
/*
* Align the start address
*/
rounded = (addr & ~(dma_pagesize - 1)) + dma_pagesize;
snd_raw_buf[dev][snd_raw_count[dev]] =
&tmpbuf[rounded - addr]; /* Compute offset */
/*
* Use virtual address as the physical address, since
* isa_dmastart performs the phys address computation.
*/
snd_raw_buf_phys[dev][snd_raw_count[dev]] =
(unsigned long) snd_raw_buf[dev][snd_raw_count[dev]];
}
} /* for dev */
}
#endif
struct isa_driver snddriver =
{sndprobe, sndattach, "snd"};
int
snd_ioctl_return (int *addr, int value)
{
if (value < 0)
return value; /* Error */
suword (addr, value);
return 0;
}
#endif
|