376c314995
totally dynamic. (the first was about 7 weeeks ago) this is only the devices in i386/isa I'll do more tomorrow. they're completely masked by #ifdef JREMOD at this stage... the eventual aim is that every driver will do a SYSINIT at startup BEFORE the probes, which will effectively link it into the devsw tables etc. If I'd thought about it more I'd have put that in in this set (damn) The ioconf lines generated by config will also end up in the device's own scope as well, so ioconf.c will eventually be gutted the SYSINIT call to the driver will include a phase where the driver links it's ioconf line into a chain of such. when this phase is done then the user can modify them with the boot: -c config menu if he wants, just like now.. config will put the config lines out in the .h file (e.g. in aha.h will be the addresses for the aha driver to look.) as I said this is a very small first step.. the aim of THIS set of edits is to not have to edit conf.c at all when adding a new device.. the tabe will be a simple skeleton.. when this is done, it will allow other changes to be made, all teh time still having a fully working kernel tree, but the logical outcome is the complete REMOVAL of the devsw tables. By the end of this, linked in drivers will be exactly the same as run-time loaded drivers, except they JUST HAPPEN to already be linked and present at startup.. the SYSINIT calls will be the equivalent of the "init" call made to a newly loaded driver in every respect. For this edit, each of the files has the following code inserted into it: obviously, tailored to suit.. ----------------------somewhere at the top: #ifdef JREMOD #include <sys/conf.h> #define CDEV_MAJOR 13 #define BDEV_MAJOR 4 static void sd_devsw_install(); #endif /*JREMOD */ ---------------------somewhere that's run during bootup: EVENTUALLY a SYSINIT #ifdef JREMOD sd_devsw_install(); #endif /*JREMOD*/ -----------------------at the bottom: #ifdef JREMOD struct bdevsw sd_bdevsw = { sdopen, sdclose, sdstrategy, sdioctl, /*4*/ sddump, sdsize, 0 }; struct cdevsw sd_cdevsw = { sdopen, sdclose, rawread, rawwrite, /*13*/ sdioctl, nostop, nullreset, nodevtotty,/* sd */ seltrue, nommap, sdstrategy }; static sd_devsw_installed = 0; static void sd_devsw_install() { dev_t descript; if( ! sd_devsw_installed ) { descript = makedev(CDEV_MAJOR,0); cdevsw_add(&descript,&sd_cdevsw,NULL); #if defined(BDEV_MAJOR) descript = makedev(BDEV_MAJOR,0); bdevsw_add(&descript,&sd_bdevsw,NULL); #endif /*BDEV_MAJOR*/ sd_devsw_installed = 1; } } #endif /* JREMOD */
507 lines
12 KiB
C
507 lines
12 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 1.30 1995/11/04 13:24:48 bde Exp $
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*/
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#include "sound_config.h"
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#ifdef CONFIGURE_SOUNDCARD
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#include "dev_table.h"
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#include <i386/isa/isa_device.h>
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#ifdef JREMOD
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#include <sys/conf.h>
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#define CDEV_MAJOR 30
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static void snd_devsw_install();
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#endif /*JREMOD*/
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u_int snd1_imask;
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u_int snd2_imask;
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u_int snd3_imask;
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u_int snd4_imask;
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u_int snd5_imask;
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u_int snd6_imask;
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u_int snd7_imask;
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u_int snd8_imask;
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u_int snd9_imask;
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#define FIX_RETURN(ret) {if ((ret)<0) return -(ret); else return 0;}
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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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struct selinfo selinfo[SND_NDEVS >> 4];
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int sndprobe (struct isa_device *dev);
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int sndattach (struct isa_device *dev);
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static void sound_mem_init(void);
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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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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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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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int
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sndopen (dev_t dev, int flags, int fmt, struct proc *p)
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{
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int retval;
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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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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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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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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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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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int
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sndattach (struct isa_device *dev)
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{
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int i, unit;
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static int midi_initialized = 0;
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static int seq_initialized = 0;
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static int generic_midi_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 JREMOD
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snd_devsw_install();
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#endif /*JREMOD*/
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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 i, 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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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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audio_devs[dev]->buffsize &= ~0xfff; /* Truncate to n*4k */
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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 %d 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_ioctl_return (int *addr, int value)
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{
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if (value < 0)
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return value; /* Error */
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suword (addr, value);
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return 0;
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}
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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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#ifdef JREMOD
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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 };
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static snd_devsw_installed = 0;
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static void snd_devsw_install()
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{
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dev_t descript;
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if( ! snd_devsw_installed ) {
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descript = makedev(CDEV_MAJOR,0);
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cdevsw_add(&descript,&snd_cdevsw,NULL);
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#if defined(BDEV_MAJOR)
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descript = makedev(BDEV_MAJOR,0);
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bdevsw_add(&descript,&snd_bdevsw,NULL);
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#endif /*BDEV_MAJOR*/
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snd_devsw_installed = 1;
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}
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}
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#endif /* JREMOD */
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#endif
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