550 lines
13 KiB
C
550 lines
13 KiB
C
/*
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* sound/386bsd/soundcard.c
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*
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* Soundcard driver for FreeBSD.
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*
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* Copyright by Hannu Savolainen 1993
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: soundcard.c,v 1.42 1996/03/28 14:31:13 scrappy Exp $
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*/
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#include <i386/isa/sound/sound_config.h>
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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#ifdef CONFIGURE_SOUNDCARD
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#include <i386/isa/sound/dev_table.h>
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#include <i386/isa/isa_device.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#ifdef DEVFS
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#include <sys/devfsext.h>
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#endif /*DEVFS*/
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#define FIX_RETURN(ret) { \
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int tmp_ret = (ret); \
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if (tmp_ret<0) return -tmp_ret; else return 0; \
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}
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static int timer_running = 0;
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static int soundcards_installed = 0; /* Number of installed
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* soundcards */
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static int soundcard_configured = 0;
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static struct fileinfo files[SND_NDEVS];
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#ifdef DEVFS
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static void * snd_devfs_token[SND_NDEVS];
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static void * sndstat_devfs_token;
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#endif
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struct selinfo selinfo[SND_NDEVS >> 4];
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static int sndprobe (struct isa_device *dev);
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static int sndattach (struct isa_device *dev);
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static void sound_mem_init(void);
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static d_open_t sndopen;
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static d_close_t sndclose;
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static d_read_t sndread;
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static d_write_t sndwrite;
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static d_ioctl_t sndioctl;
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static d_select_t sndselect;
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#define CDEV_MAJOR 30
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static struct cdevsw snd_cdevsw =
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{ sndopen, sndclose, sndread, sndwrite, /*30*/
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sndioctl, nostop, nullreset, nodevtotty,/* sound */
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sndselect, nommap, NULL, "snd", NULL, -1 };
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struct isa_driver opldriver = {sndprobe, sndattach, "opl"};
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struct isa_driver sbdriver = {sndprobe, sndattach, "sb"};
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struct isa_driver sbxvidriver = {sndprobe, sndattach, "sbxvi"};
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struct isa_driver sbmididriver = {sndprobe, sndattach, "sbmidi"};
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struct isa_driver pasdriver = {sndprobe, sndattach, "pas"};
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struct isa_driver mpudriver = {sndprobe, sndattach, "mpu"};
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struct isa_driver gusdriver = {sndprobe, sndattach, "gus"};
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struct isa_driver gusxvidriver = {sndprobe, sndattach, "gusxvi"};
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struct isa_driver gusmaxdriver = {sndprobe, sndattach, "gusmax"};
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struct isa_driver uartdriver = {sndprobe, sndattach, "uart"};
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struct isa_driver mssdriver = {sndprobe, sndattach, "mss"};
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static unsigned short
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ipri_to_irq (unsigned short ipri);
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void
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adintr(INT_HANDLER_PARMS(unit,dummy))
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{
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#ifndef EXCLUDE_AD1848
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static short unit_to_irq[4] = { -1, -1, -1, -1 };
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struct isa_device *dev;
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if (unit_to_irq [unit] > 0)
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ad1848_interrupt(INT_HANDLER_CALL (unit_to_irq [unit]));
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else {
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dev = find_isadev (isa_devtab_null, &mssdriver, unit);
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if (!dev)
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printk ("ad1848: Couldn't determine unit\n");
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else {
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unit_to_irq [unit] = ipri_to_irq (dev->id_irq);
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ad1848_interrupt(INT_HANDLER_CALL (unit_to_irq [unit]));
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}
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}
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#endif
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}
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unsigned
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long
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get_time(void)
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{
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struct timeval timecopy;
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int x;
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x = splclock();
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timecopy = time;
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splx(x);
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return timecopy.tv_usec/(1000000/HZ) +
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(unsigned long)timecopy.tv_sec*HZ;
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}
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static int
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sndread (dev_t dev, struct uio *buf, int ioflag)
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{
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int count = buf->uio_resid;
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dev = minor (dev);
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FIX_RETURN (sound_read_sw (dev, &files[dev], buf, count));
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}
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static int
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sndwrite (dev_t dev, struct uio *buf, int ioflag)
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{
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int count = buf->uio_resid;
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dev = minor (dev);
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FIX_RETURN (sound_write_sw (dev, &files[dev], buf, count));
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}
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static int
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sndopen (dev_t dev, int flags, int fmt, struct proc *p)
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{
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dev = minor (dev);
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if (!soundcard_configured && dev)
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{
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printk ("SoundCard Error: The soundcard system has not been configured\n");
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FIX_RETURN (-ENODEV);
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}
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files[dev].mode = 0;
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if (flags & FREAD && flags & FWRITE)
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files[dev].mode = OPEN_READWRITE;
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else if (flags & FREAD)
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files[dev].mode = OPEN_READ;
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else if (flags & FWRITE)
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files[dev].mode = OPEN_WRITE;
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selinfo[dev >> 4].si_pid = 0;
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selinfo[dev >> 4].si_flags = 0;
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FIX_RETURN(sound_open_sw (dev, &files[dev]));
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}
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static int
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sndclose (dev_t dev, int flags, int fmt, struct proc *p)
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{
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dev = minor (dev);
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sound_release_sw(dev, &files[dev]);
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FIX_RETURN (0);
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}
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static int
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sndioctl (dev_t dev, int cmd, caddr_t arg, int flags, struct proc *p)
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{
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dev = minor (dev);
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FIX_RETURN (sound_ioctl_sw (dev, &files[dev], cmd, (unsigned int) arg));
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}
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static int
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sndselect (dev_t dev, int rw, struct proc *p)
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{
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dev = minor (dev);
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DEB (printk ("snd_select(dev=%d, rw=%d, pid=%d)\n", dev, rw, p->p_pid));
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#ifdef ALLOW_SELECT
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switch (dev & 0x0f)
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{
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#ifndef EXCLUDE_SEQUENCER
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case SND_DEV_SEQ:
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case SND_DEV_SEQ2:
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return sequencer_select (dev, &files[dev], rw, p);
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break;
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#endif
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#ifndef EXCLUDE_MIDI
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case SND_DEV_MIDIN:
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return MIDIbuf_select (dev, &files[dev], rw, p);
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break;
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#endif
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#ifndef EXCLUDE_AUDIO
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case SND_DEV_DSP:
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case SND_DEV_DSP16:
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case SND_DEV_AUDIO:
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return audio_select (dev, &files[dev], rw, p);
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break;
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#endif
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default:
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return 0;
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}
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#endif
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return 0;
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}
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static unsigned short
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ipri_to_irq (unsigned short ipri)
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{
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/*
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* Converts the ipri (bitmask) to the corresponding irq number
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*/
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int irq;
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for (irq = 0; irq < 16; irq++)
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if (ipri == (1 << irq))
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return irq;
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return -1; /* Invalid argument */
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}
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static int
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driver_to_voxunit(struct isa_driver *driver)
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{
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/* converts a sound driver pointer into the equivalent
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VoxWare device unit number */
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if(driver == &opldriver)
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return(SNDCARD_ADLIB);
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else if(driver == &sbdriver)
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return(SNDCARD_SB);
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else if(driver == &pasdriver)
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return(SNDCARD_PAS);
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else if(driver == &gusdriver)
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return(SNDCARD_GUS);
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else if(driver == &mpudriver)
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return(SNDCARD_MPU401);
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else if(driver == &sbxvidriver)
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return(SNDCARD_SB16);
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else if(driver == &sbmididriver)
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return(SNDCARD_SB16MIDI);
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else if(driver == &uartdriver)
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return(SNDCARD_UART6850);
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else if(driver == &gusdriver)
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return(SNDCARD_GUS16);
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else if(driver == &mssdriver)
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return(SNDCARD_MSS);
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else
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return(0);
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}
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static int
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sndprobe (struct isa_device *dev)
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{
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struct address_info hw_config;
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int unit;
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unit = driver_to_voxunit(dev->id_driver);
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hw_config.io_base = dev->id_iobase;
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hw_config.irq = ipri_to_irq (dev->id_irq);
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hw_config.dma = dev->id_drq;
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hw_config.dma_read = dev->id_flags; /* misuse the flags field for read dma*/
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if(unit)
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return sndtable_probe (unit, &hw_config);
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else
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return 0;
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}
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static int
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sndattach (struct isa_device *dev)
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{
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int unit;
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static int midi_initialized = 0;
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static int seq_initialized = 0;
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unsigned long mem_start = 0xefffffffUL;
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struct address_info hw_config;
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unit = driver_to_voxunit(dev->id_driver);
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hw_config.io_base = dev->id_iobase;
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hw_config.irq = ipri_to_irq (dev->id_irq);
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hw_config.dma = dev->id_drq;
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hw_config.dma_read = dev->id_flags; /* misuse the flags field for read dma*/
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if(!unit)
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return FALSE;
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if (!sndtable_init_card (unit, &hw_config))
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{
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printf (" <Driver not configured>");
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return FALSE;
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}
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/*
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* Init the high level sound driver
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*/
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if (!(soundcards_installed = sndtable_get_cardcount ()))
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{
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printf (" <No such hardware>");
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return FALSE; /* No cards detected */
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}
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printf("\n");
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#ifndef EXCLUDE_AUDIO
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if (num_audiodevs) /* Audio devices present */
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{
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mem_start = DMAbuf_init (mem_start);
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mem_start = audio_init (mem_start);
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sound_mem_init ();
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}
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soundcard_configured = 1;
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#endif
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#ifndef EXCLUDE_MIDI
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if (num_midis && !midi_initialized)
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{
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midi_initialized = 1;
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mem_start = MIDIbuf_init (mem_start);
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}
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#endif
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#ifndef EXCLUDE_SEQUENCER
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if ((num_midis + num_synths) && !seq_initialized)
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{
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seq_initialized = 1;
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mem_start = sequencer_init (mem_start);
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}
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#endif
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#ifdef DEVFS
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/* XXX */ /* find out where to store the tokens.. */
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/* XXX */ /* should only create devices if that card has them */
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#define SND_UID 0
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#define SND_GID 13
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snd_devfs_token[unit]=
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devfs_add_devswf(&snd_cdevsw, (unit << 4)+SND_DEV_CTL, DV_CHR,
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SND_UID, SND_GID, 0660, "mixer%d", unit);
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#ifndef EXCLUDE_SEQUENCER
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snd_devfs_token[unit]=
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devfs_add_devswf(&snd_cdevsw, (unit << 4)+SND_DEV_SEQ, DV_CHR,
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SND_UID, SND_GID, 0660, "sequencer%d", unit);
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snd_devfs_token[unit]=
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devfs_add_devswf(&snd_cdevsw, (unit << 4)+SND_DEV_SEQ2, DV_CHR,
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SND_UID, SND_GID, 0660, "music%d", unit);
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#endif
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#ifndef EXCLUDE_MIDI
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snd_devfs_token[unit]=
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devfs_add_devswf(&snd_cdevsw, (unit << 4)+SND_DEV_MIDIN,
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DV_CHR, SND_UID, SND_GID, 0660, "midi%d",
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unit);
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#endif
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#ifndef EXCLUDE_AUDIO
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snd_devfs_token[unit]=
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devfs_add_devswf(&snd_cdevsw, (unit << 4)+SND_DEV_DSP, DV_CHR,
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SND_UID, SND_GID, 0660, "dsp%d", unit);
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snd_devfs_token[unit]=
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devfs_add_devswf(&snd_cdevsw, (unit << 4)+SND_DEV_AUDIO,
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DV_CHR, SND_UID, SND_GID, 0660, "audio%d",
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unit);
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snd_devfs_token[unit]=
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devfs_add_devswf(&snd_cdevsw, (unit << 4)+SND_DEV_DSP16,
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DV_CHR, SND_UID, SND_GID, 0660, "dspW%d",
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unit);
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#endif
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snd_devfs_token[unit]=
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devfs_add_devswf(&snd_cdevsw, (unit << 4)+SND_DEV_SNDPROC,
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DV_CHR, SND_UID, SND_GID, 0660, "pss%d",
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unit);
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if ( ! sndstat_devfs_token) {
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sndstat_devfs_token =
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devfs_add_devswf(&snd_cdevsw, 6, DV_CHR, SND_UID, SND_GID,
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0660, "sndstat");
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}
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#endif /* DEVFS */
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return TRUE;
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}
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void
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tenmicrosec (void)
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{
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int i;
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for (i = 0; i < 16; i++)
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inb (0x80);
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}
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#ifndef EXCLUDE_SEQUENCER
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void
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request_sound_timer (int count)
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{
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static int current = 0;
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int tmp = count;
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if (count < 0)
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timeout ((timeout_func_t)sequencer_timer, 0, -count);
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else
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{
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if (count < current)
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current = 0; /* Timer restarted */
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count = count - current;
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current = tmp;
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if (!count)
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count = 1;
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timeout ((timeout_func_t)sequencer_timer, 0, count);
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}
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timer_running = 1;
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}
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void
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sound_stop_timer (void)
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{
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if (timer_running)
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untimeout ((timeout_func_t)sequencer_timer, 0);
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timer_running = 0;
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}
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#endif
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#ifndef EXCLUDE_AUDIO
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static void
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sound_mem_init (void)
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{
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int dev;
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unsigned long dma_pagesize;
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struct dma_buffparms *dmap;
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static unsigned long dsp_init_mask = 0;
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for (dev = 0; dev < num_audiodevs; dev++) /* Enumerate devices */
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if (!(dsp_init_mask & (1 << dev))) /* Not already done */
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if (audio_devs[dev]->buffcount > 0 && audio_devs[dev]->dmachan > 0)
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{
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dsp_init_mask |= (1 << dev);
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dmap = audio_devs[dev]->dmap;
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if (audio_devs[dev]->flags & DMA_AUTOMODE)
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audio_devs[dev]->buffcount = 1;
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audio_devs[dev]->buffsize &= ~0xfff; /* Truncate to n*4k */
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if (audio_devs[dev]->dmachan > 3 && audio_devs[dev]->buffsize > 65536)
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dma_pagesize = 131072; /* 128k */
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else
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dma_pagesize = 65536;
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/* More sanity checks */
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if (audio_devs[dev]->buffsize > dma_pagesize)
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audio_devs[dev]->buffsize = dma_pagesize;
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if (audio_devs[dev]->buffsize < 4096)
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audio_devs[dev]->buffsize = 4096;
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/* Now allocate the buffers */
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for (dmap->raw_count = 0; dmap->raw_count < audio_devs[dev]->buffcount; dmap->raw_count++)
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{
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char *tmpbuf = (char *)vm_page_alloc_contig(audio_devs[dev]->buffsize, 0ul, 0xfffffful, dma_pagesize);
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if (tmpbuf == NULL)
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{
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printk ("snd: Unable to allocate %ld bytes of buffer\n",
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audio_devs[dev]->buffsize);
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return;
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}
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dmap->raw_buf[dmap->raw_count] = tmpbuf;
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/*
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* Use virtual address as the physical address, since
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* isa_dmastart performs the phys address computation.
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*/
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dmap->raw_buf_phys[dmap->raw_count] =
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(unsigned long) dmap->raw_buf[dmap->raw_count];
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}
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} /* for dev */
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}
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#endif
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int
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snd_set_irq_handler (int interrupt_level, INT_HANDLER_PROTO(), char *name)
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{
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return 1;
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}
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void
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snd_release_irq(int vect)
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{
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}
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static snd_devsw_installed = 0;
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static void
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snd_drvinit(void *unused)
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|
{
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|
dev_t dev;
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|
|
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if( ! snd_devsw_installed ) {
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dev = makedev(CDEV_MAJOR, 0);
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cdevsw_add(&dev,&snd_cdevsw, NULL);
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snd_devsw_installed = 1;
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}
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|
}
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|
SYSINIT(snddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,snd_drvinit,NULL)
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#endif
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