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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.
*
* $Id: soundcard.c,v 1.38 1995/12/08 23:21:13 phk Exp $
*/
#include "sound_config.h"
#include <vm/vm.h>
#include <vm/vm_extern.h>
#ifdef CONFIGURE_SOUNDCARD
#include "dev_table.h"
#include <i386/isa/isa_device.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#ifdef DEVFS
#include <sys/devfsext.h>
#endif /*DEVFS*/
u_int snd1_imask;
u_int snd2_imask;
u_int snd3_imask;
u_int snd4_imask;
u_int snd5_imask;
u_int snd6_imask;
u_int snd7_imask;
u_int snd8_imask;
u_int snd9_imask;
#define FIX_RETURN(ret) { \
int tmp_ret = (ret); \
if (tmp_ret<0) return -tmp_ret; else return 0; \
}
static int timer_running = 0;
static int soundcards_installed = 0; /* Number of installed
* soundcards */
static int soundcard_configured = 0;
static struct fileinfo files[SND_NDEVS];
static void * snd_devfs_token[SND_NDEVS];
static void * sndstat_devfs_token;
struct selinfo selinfo[SND_NDEVS >> 4];
int sndprobe (struct isa_device *dev);
int sndattach (struct isa_device *dev);
static void sound_mem_init(void);
static d_open_t sndopen;
static d_close_t sndclose;
static d_read_t sndread;
static d_write_t sndwrite;
static d_ioctl_t sndioctl;
static d_select_t sndselect;
#define CDEV_MAJOR 30
static struct cdevsw snd_cdevsw =
{ sndopen, sndclose, sndread, sndwrite, /*30*/
sndioctl, nostop, nullreset, nodevtotty,/* sound */
sndselect, nommap, NULL, "snd", NULL, -1 };
struct isa_driver opldriver = {sndprobe, sndattach, "opl"};
struct isa_driver sbdriver = {sndprobe, sndattach, "sb"};
struct isa_driver sbxvidriver = {sndprobe, sndattach, "sbxvi"};
struct isa_driver sbmididriver = {sndprobe, sndattach, "sbmidi"};
struct isa_driver pasdriver = {sndprobe, sndattach, "pas"};
struct isa_driver mpudriver = {sndprobe, sndattach, "mpu"};
struct isa_driver gusdriver = {sndprobe, sndattach, "gus"};
struct isa_driver gusxvidriver = {sndprobe, sndattach, "gusxvi"};
struct isa_driver gusmaxdriver = {sndprobe, sndattach, "gusmax"};
struct isa_driver uartdriver = {sndprobe, sndattach, "uart"};
struct isa_driver mssdriver = {sndprobe, sndattach, "mss"};
static unsigned short
ipri_to_irq (unsigned short ipri);
void
adintr(INT_HANDLER_PARMS(unit,dummy))
{
#ifndef EXCLUDE_AD1848
static short unit_to_irq[4] = { -1, -1, -1, -1 };
struct isa_device *dev;
if (unit_to_irq [unit] > 0)
ad1848_interrupt(INT_HANDLER_CALL (unit_to_irq [unit]));
else {
dev = find_isadev (isa_devtab_null, &mssdriver, unit);
if (!dev)
printk ("ad1848: Couldn't determine unit\n");
else {
unit_to_irq [unit] = ipri_to_irq (dev->id_irq);
ad1848_interrupt(INT_HANDLER_CALL (unit_to_irq [unit]));
}
}
#endif
}
unsigned
long
get_time(void)
{
struct timeval timecopy;
int x;
x = splclock();
timecopy = time;
splx(x);
return timecopy.tv_usec/(1000000/HZ) +
(unsigned long)timecopy.tv_sec*HZ;
}
static int
sndread (dev_t dev, struct uio *buf, int ioflag)
{
int count = buf->uio_resid;
dev = minor (dev);
FIX_RETURN (sound_read_sw (dev, &files[dev], buf, count));
}
static int
sndwrite (dev_t dev, struct uio *buf, int ioflag)
{
int count = buf->uio_resid;
dev = minor (dev);
FIX_RETURN (sound_write_sw (dev, &files[dev], buf, count));
}
static int
sndopen (dev_t dev, int flags, int fmt, struct proc *p)
{
int retval;
dev = minor (dev);
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;
selinfo[dev >> 4].si_pid = 0;
selinfo[dev >> 4].si_flags = 0;
FIX_RETURN(sound_open_sw (dev, &files[dev]));
}
static int
sndclose (dev_t dev, int flags, int fmt, struct proc *p)
{
dev = minor (dev);
sound_release_sw(dev, &files[dev]);
FIX_RETURN (0);
}
static int
sndioctl (dev_t dev, int cmd, caddr_t arg, int flags, struct proc *p)
{
dev = minor (dev);
FIX_RETURN (sound_ioctl_sw (dev, &files[dev], cmd, (unsigned int) arg));
}
static int
sndselect (dev_t dev, int rw, struct proc *p)
{
dev = minor (dev);
DEB (printk ("snd_select(dev=%d, rw=%d, pid=%d)\n", dev, rw, p->p_pid));
#ifdef ALLOW_SELECT
switch (dev & 0x0f)
{
#ifndef EXCLUDE_SEQUENCER
case SND_DEV_SEQ:
case SND_DEV_SEQ2:
return sequencer_select (dev, &files[dev], rw, p);
break;
#endif
#ifndef EXCLUDE_MIDI
case SND_DEV_MIDIN:
return MIDIbuf_select (dev, &files[dev], rw, p);
break;
#endif
#ifndef EXCLUDE_AUDIO
case SND_DEV_DSP:
case SND_DEV_DSP16:
case SND_DEV_AUDIO:
return audio_select (dev, &files[dev], rw, p);
break;
#endif
default:
return 0;
}
#endif
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 */
}
static int
driver_to_voxunit(struct isa_driver *driver)
{
/* converts a sound driver pointer into the equivalent
VoxWare device unit number */
if(driver == &opldriver)
return(SNDCARD_ADLIB);
else if(driver == &sbdriver)
return(SNDCARD_SB);
else if(driver == &pasdriver)
return(SNDCARD_PAS);
else if(driver == &gusdriver)
return(SNDCARD_GUS);
else if(driver == &mpudriver)
return(SNDCARD_MPU401);
else if(driver == &sbxvidriver)
return(SNDCARD_SB16);
else if(driver == &sbmididriver)
return(SNDCARD_SB16MIDI);
else if(driver == &uartdriver)
return(SNDCARD_UART6850);
else if(driver == &gusdriver)
return(SNDCARD_GUS16);
else if(driver == &mssdriver)
return(SNDCARD_MSS);
else
return(0);
}
int
sndprobe (struct isa_device *dev)
{
struct address_info hw_config;
int unit;
unit = driver_to_voxunit(dev->id_driver);
hw_config.io_base = dev->id_iobase;
hw_config.irq = ipri_to_irq (dev->id_irq);
hw_config.dma = dev->id_drq;
hw_config.dma_read = dev->id_flags; /* misuse the flags field for read dma*/
if(unit)
return sndtable_probe (unit, &hw_config);
else
return 0;
}
int
sndattach (struct isa_device *dev)
{
int i, unit;
static int midi_initialized = 0;
static int seq_initialized = 0;
static int generic_midi_initialized = 0;
unsigned long mem_start = 0xefffffffUL;
struct address_info hw_config;
char name[32];
unit = driver_to_voxunit(dev->id_driver);
hw_config.io_base = dev->id_iobase;
hw_config.irq = ipri_to_irq (dev->id_irq);
hw_config.dma = dev->id_drq;
hw_config.dma_read = dev->id_flags; /* misuse the flags field for read dma*/
if(!unit)
return FALSE;
if (!sndtable_init_card (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
if (num_audiodevs) /* Audio devices present */
{
mem_start = DMAbuf_init (mem_start);
mem_start = audio_init (mem_start);
sound_mem_init ();
}
soundcard_configured = 1;
#endif
#ifndef EXCLUDE_MIDI
if (num_midis && !midi_initialized)
{
midi_initialized = 1;
mem_start = MIDIbuf_init (mem_start);
}
#endif
#ifndef EXCLUDE_SEQUENCER
if ((num_midis + num_synths) && !seq_initialized)
{
seq_initialized = 1;
mem_start = sequencer_init (mem_start);
}
#endif
#ifdef DEVFS
/* XXX */ /* find out where to store the tokens.. */
/* XXX */ /* should only create devices if that card has them */
#define SND_UID 0
#define SND_GID 13
sprintf(name,"mixer%d",unit);
snd_devfs_token[unit]=devfs_add_devsw(
"/", name, &snd_cdevsw, (unit << 4)+SND_DEV_CTL,
DV_CHR, SND_UID, SND_GID, 0660);
#ifndef EXCLUDE_SEQUENCER
sprintf(name,"sequencer%d",unit);
snd_devfs_token[unit]=devfs_add_devsw(
"/", name, &snd_cdevsw, (unit << 4)+SND_DEV_SEQ,
DV_CHR, SND_UID, SND_GID, 0660);
sprintf(name,"music%d",unit);
snd_devfs_token[unit]=devfs_add_devsw(
"/", name, &snd_cdevsw, (unit << 4)+SND_DEV_SEQ2,
DV_CHR, SND_UID, SND_GID, 0660);
#endif
#ifndef EXCLUDE_MIDI
sprintf(name,"midi%d",unit);
snd_devfs_token[unit]=devfs_add_devsw(
"/", name, &snd_cdevsw, (unit << 4)+SND_DEV_MIDIN,
DV_CHR, SND_UID, SND_GID, 0660);
#endif
#ifndef EXCLUDE_AUDIO
sprintf(name,"dsp%d",unit);
snd_devfs_token[unit]=devfs_add_devsw(
"/", name, &snd_cdevsw, (unit << 4)+SND_DEV_DSP,
DV_CHR, SND_UID, SND_GID, 0660);
sprintf(name,"audio%d",unit);
snd_devfs_token[unit]=devfs_add_devsw(
"/", name, &snd_cdevsw, (unit << 4)+SND_DEV_AUDIO,
DV_CHR, SND_UID, SND_GID, 0660);
sprintf(name,"dspW%d",unit);
snd_devfs_token[unit]=devfs_add_devsw(
"/", name, &snd_cdevsw, (unit << 4)+SND_DEV_DSP16,
DV_CHR, SND_UID, SND_GID, 0660);
#endif
sprintf(name,"pss%d",unit);
snd_devfs_token[unit]=devfs_add_devsw(
"/", name, &snd_cdevsw, (unit << 4)+SND_DEV_SNDPROC,
DV_CHR, SND_UID, SND_GID, 0660);
if ( ! sndstat_devfs_token) {
sndstat_devfs_token = devfs_add_devsw(
"/", "sndstat", &snd_cdevsw, 6,
DV_CHR, SND_UID, SND_GID, 0660);
}
#endif /* DEVFS */
return TRUE;
}
void
tenmicrosec (void)
{
int i;
for (i = 0; i < 16; i++)
inb (0x80);
}
#ifndef EXCLUDE_SEQUENCER
void
request_sound_timer (int count)
{
static int current = 0;
int tmp = count;
if (count < 0)
timeout ((timeout_func_t)sequencer_timer, 0, -count);
else
{
if (count < current)
current = 0; /* Timer restarted */
count = count - current;
current = tmp;
if (!count)
count = 1;
timeout ((timeout_func_t)sequencer_timer, 0, count);
}
timer_running = 1;
}
void
sound_stop_timer (void)
{
if (timer_running)
untimeout ((timeout_func_t)sequencer_timer, 0);
timer_running = 0;
}
#endif
#ifndef EXCLUDE_AUDIO
static void
sound_mem_init (void)
{
int i, dev;
unsigned long dma_pagesize;
struct dma_buffparms *dmap;
static unsigned long dsp_init_mask = 0;
for (dev = 0; dev < num_audiodevs; dev++) /* Enumerate devices */
if (!(dsp_init_mask & (1 << dev))) /* Not already done */
if (audio_devs[dev]->buffcount > 0 && audio_devs[dev]->dmachan > 0)
{
dsp_init_mask |= (1 << dev);
dmap = audio_devs[dev]->dmap;
if (audio_devs[dev]->flags & DMA_AUTOMODE)
audio_devs[dev]->buffcount = 1;
if (audio_devs[dev]->dmachan > 3 && audio_devs[dev]->buffsize > 65536)
dma_pagesize = 131072; /* 128k */
else
dma_pagesize = 65536;
/* More sanity checks */
if (audio_devs[dev]->buffsize > dma_pagesize)
audio_devs[dev]->buffsize = dma_pagesize;
audio_devs[dev]->buffsize &= ~0xfff; /* Truncate to n*4k */
if (audio_devs[dev]->buffsize < 4096)
audio_devs[dev]->buffsize = 4096;
/* Now allocate the buffers */
for (dmap->raw_count = 0; dmap->raw_count < audio_devs[dev]->buffcount; dmap->raw_count++)
{
char *tmpbuf = (char *)vm_page_alloc_contig(audio_devs[dev]->buffsize, 0ul, 0xfffffful, dma_pagesize);
if (tmpbuf == NULL)
{
printk ("snd: Unable to allocate %d bytes of buffer\n",
audio_devs[dev]->buffsize);
return;
}
dmap->raw_buf[dmap->raw_count] = tmpbuf;
/*
* Use virtual address as the physical address, since
* isa_dmastart performs the phys address computation.
*/
dmap->raw_buf_phys[dmap->raw_count] =
(unsigned long) dmap->raw_buf[dmap->raw_count];
}
} /* for dev */
}
#endif
int
snd_ioctl_return (int *addr, int value)
{
if (value < 0)
return value; /* Error */
suword (addr, value);
return 0;
}
int
snd_set_irq_handler (int interrupt_level, INT_HANDLER_PROTO(), char *name)
{
return 1;
}
void
snd_release_irq(int vect)
{
}
static snd_devsw_installed = 0;
static void
snd_drvinit(void *unused)
{
dev_t dev;
if( ! snd_devsw_installed ) {
dev = makedev(CDEV_MAJOR, 0);
cdevsw_add(&dev,&snd_cdevsw, NULL);
snd_devsw_installed = 1;
}
}
SYSINIT(snddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,snd_drvinit,NULL)
#endif
|