Remove 'alog'. G'bye Jamil.

1 files changed, 0 insertions, 664 deletions

diff --git a/sys/i386/isa/alog.c b/sys/i386/isa/alog.c
deleted file mode 100644
index 65c8e1a..0000000
--- a/sys/i386/isa/alog.c
+++ /dev/null
@@ -1,664 +0,0 @@
-/*
- * Copyright (c) 1998 Scottibox 
- * All rights reserved.
- *
- * 
- * 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
- *    in this position and unchanged.
- * 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.
- * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission
- * 
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
- *
- * Industrial Computer Source model AIO8-P
- * 8 channel, moderate speed analog to digital converter board with
- * 128 channel MUX capability via daisy chained AT-16P units
- * alog.c, character device driver, last revised January 6 1998
- * See http://www.scottibox.com
- *     http://www.indcompsrc.com/products/data/html/aio8g-p.html
- *     http://www.indcompsrc.com/products/data/html/at16-p.html
- *
- * Written by: Jamil J. Weatherbee <jamil@scottibox.com>
- *
- */
-
-
-/* Include Files */
-
-#include "alog.h"
-#if NALOG > 0
-
-#include <sys/param.h> 
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/conf.h>
-#include <sys/fcntl.h>
-#include <sys/malloc.h>
-#include <sys/poll.h>
-#include <sys/vnode.h>
-#include <sys/filio.h>
-#include <i386/isa/isa_device.h>
-#include <sys/alogio.h>
-#include <sys/dataacq.h>
-
-#include "opt_devfs.h"
-#ifdef DEVFS
-#include <sys/devfsext.h>
-#endif 
-
-/* Local Defines */
-
-/* Tests have shown that increasing the fifo size 
- * beyond 64 entries for this particular piece of hardware is
- * unproductive */
-
-#ifdef ALOG_FIFOSIZE
-#define FIFOSIZE ALOG_FIFOSIZE
-#else
-#define FIFOSIZE 64
-#endif
-
-#ifdef ALOG_FIFO_TRIGGER
-#define DEFAULT_FIFO_TRIGGER ALOG_FIFO_TRIGGER
-#else
-#define DEFAULT_FIFO_TRIGGER 1
-#endif
-
-#ifdef ALOG_CHANNELS 
-#define NUMCHANNELS ALOG_CHANNELS
-#else
-#define NUMCHANNELS 128
-#endif
-
-#ifdef ALOG_TIMO
-#define READTIMO ALOG_TIMO
-#else
-#define READTIMO (MAX_MICRO_PERIOD*NUMCHANNELS/500000*hz)
-#endif
-
-#define CDEV_MAJOR 86
-#define NUMPORTS 8
-#define MAXUNITS 2
-#define NUMIMUXES 8
-
-#define ADLOW 0x0
-#define ADHIGH 0x1
-#define STATUS 0x2
-#define CNTR0 0x4
-#define CNTR1 0x5
-#define CNTR2 0x6
-#define CNTRCNTRL 0x7
-
-#define DEVFORMAT "alog%d%c%d"
-#define CLOCK2FREQ 4.165
-#define MIN_MICRO_PERIOD 25  
-#define MAX_MICRO_PERIOD (65535/CLOCK2FREQ*PRIMARY_STATES)
-#define DEFAULT_MICRO_PERIOD MAX_MICRO_PERIOD
-#define READMAXTRIG 0.75*FIFOSIZE
-#define ALOGPRI PRIBIO
-#define ALOGMSG "alogio"
-
-#define PRIMARY_STATES 2  /* Setup and conversion are clock tick consuming */
-#define STATE_SETUP 0
-#define STATE_CONVERT 1
-#define STATE_READ 2
-
-/* Notes on interrupt driven A/D conversion:
- * On the AIO8-P, interrupt driven conversion (the only type supported by this
- * driver) is facilitated through 8253 timer #2.  In order for interrrupts to
- * be generated you must connect line 6 to line 24 (counter 2 output to 
- * interrupt input) and line 23 to line 29 (counter 2 gate to +5VDC). 
- * Due to the design of the AIO8-P this precludes the use of programmable 
- * gain control.
- */
-
-/* mode bits for the status register */
-
-#define EOC 0x80 
-#define IEN 0x08  
-#define IMUXMASK 0x07
-#define EMUXMASK 0xf0
-
-/* mode bits for counter controller */
-
-#define LD2MODE4 0xb8
-
-/* Minor allocations:
- * UCCCCMMM
- * U: board unit (0-1)
- * CCCC: external multiplexer channel (0-15) (on AT-16P units)
- * MMM: internal multiplexer channel (0-7) (on AIO8-P card)
- */
-
-#define UNIT(dev) ((minor(dev) & 0x80) >> 7)
-#define CHANNEL(dev) (minor(dev) & 0x7f) 
-#define EMUX(chan) ((chan & 0x78) >> 3)
-#define EMUXMAKE(chan) ((chan & 0x78) << 1)
-#define IMUX(chan) (chan & 0x07)
-#define LMINOR(unit, chan) ((unit << 7)+chan)
-
-/* port statuses */
-
-#define STATUS_UNUSED 0 
-#define STATUS_INUSE 1
-#define STATUS_STOPPED 2
-#define STATUS_INIT 3
-
-/* Type definitions */
-
-typedef struct
-{
-  short status; /* the status of this chan */
-  struct selinfo readpoll; /* the poll() info */
-  u_short fifo[FIFOSIZE]; /* fifo for this chan */
-  int fifostart, fifoend; /* the ptrs showing where info is stored in fifo */
-  int fifosize, fifotrig; /* the current and trigger size of the fifo */
-  void *devfs_token; /* the devfs token for this chan */
-  int nextchan;  
-} talog_chan;
-
-typedef struct 
-{ 
-  struct isa_device *isaunit; /* ptr to isa device information */     
-  talog_chan chan[NUMCHANNELS]; /* the device nodes */
-  int curchan; /* the current chan being intr handled */
-  int firstchan; /* the first chan to go to in list */
-  int state; /* is the node in setup or convert mode */ 
-  long microperiod; /* current microsecond period setting */ 
-  u_char perlo, perhi; /* current values to send to clock 2 after every intr */
-   
-} talog_unit;
-
-/* Function Prototypes */
-
-static int alog_probe (struct isa_device *idp);  /* Check for alog board */
-static int alog_attach (struct isa_device *idp);  /* Take alog board */
-static ointhand2_t alogintr;
-static int sync_clock2 (int unit, long period); /* setup clock 2 period */
-static int putfifo (talog_chan *pchan, u_short fifoent);
-static int alog_open (dev_t dev, int oflags, int devtype, struct proc *p);
-static int alog_close (dev_t dev, int fflag, int devtype, struct proc *p);
-static int alog_ioctl (dev_t dev, u_long cmd, caddr_t data,
-		        int fflag, struct proc *p);
-static int alog_read (dev_t dev, struct uio *uio, int ioflag);
-static int alog_poll (dev_t dev, int events, struct proc *p);
-
-/* Global Data */
-
-static int alog_devsw_installed = 0;  /* Protect against reinit multiunit */
-static talog_unit *alog_unit[NALOG]; /* data structs for each unit */ 
-
-/* Character device switching structure */
-static struct cdevsw alog_cdevsw = { alog_open, alog_close, alog_read,
-                                     nowrite, alog_ioctl, nostop, noreset,
-                                     nodevtotty, alog_poll, nommap,
-                                     nostrategy, "alog", NULL, -1 };
-
-/* Structure expected to tell how to probe and attach the driver
- * Must be published externally (cannot be static) */
-struct isa_driver alogdriver = { alog_probe, alog_attach, "alog", 0 };
-
-
-/* handle the ioctls */
-static int alog_ioctl (dev_t dev, u_long cmd, caddr_t data,
-		        int fflag, struct proc *p)
-{
-  int unit = UNIT(dev);
-  int chan = CHANNEL(dev);
-  talog_unit *info = alog_unit[unit];
-  int s;
-   
-  switch (cmd)
-   {  
-    case FIONBIO: return 0; /* this allows for non-blocking ioctls */ 
-
-    case AD_NCHANS_GET: *(int *)data = NUMCHANNELS;
-                        return 0;
-    case AD_FIFOSIZE_GET: *(int *)data = FIFOSIZE;
-                          return 0;
-      
-    case AD_FIFO_TRIGGER_GET: s = spltty();
-	                      *(int *)data = info->chan[chan].fifotrig;
-	                      splx(s);
-                              return 0;
-      
-    case AD_FIFO_TRIGGER_SET: 
-                  s = spltty();
-                  if ((*(int *)data < 1) || (*(int *)data > FIFOSIZE))
-	           {   
-	             splx(s);
-		     return EPERM; 
-		   }
-                  info->chan[chan].fifotrig = *(int *)data;
-                  splx(s);
-                  return 0;
-      
-    case AD_STOP: s = spltty();
-                  info->chan[chan].status = STATUS_STOPPED;              
-                  splx(s);
-                  return 0;
-      
-    case AD_START: s = spltty();
-                   info->chan[chan].status = STATUS_INUSE;
-                   splx(s);
-                   return 0;
-
-    case AD_MICRO_PERIOD_SET: 
-                   s = spltty();
-                   if (sync_clock2 (unit, *(long *) data))
-	            {          
-                      splx(s);
-		      return EPERM;
-                    }
-                   splx(s);
-                   return 0;
-      
-    case AD_MICRO_PERIOD_GET: s = spltty();
-                              *(long *)data = info->microperiod;
-                              splx(s);
-                              return 0;    
-                              
-   }
-   
-  return ENOTTY;  
-}
-
-
-/* handle poll() based read polling */
-static int alog_poll (dev_t dev, int events, struct proc *p)
-{
-  int unit = UNIT(dev);
-  int chan = CHANNEL(dev);
-  talog_unit *info = alog_unit[unit];
-  int s;
-   
-  s = spltty();
-  if (events & (POLLIN | POLLRDNORM)) /* if polling for any/normal data */
-   if (info->chan[chan].fifosize >= info->chan[chan].fifotrig)
-    { 
-      splx(s);
-       
-      return events & (POLLIN | POLLRDNORM); /* ready for any/read */
-    }
-   else    
-    {
-      /* record this request */
-      selrecord (p, &(info->chan[chan].readpoll));
-      splx(s);
-      return 0; /* not ready, yet */
-    }
-     
-  splx(s);
-  return 0; /* not ready (any I never will be) */
-}
-
-
-/* how to read from the board */
-static int alog_read (dev_t dev, struct uio *uio, int ioflag)
-{
-  int unit = UNIT(dev);
-  int chan = CHANNEL(dev);
-  talog_unit *info = alog_unit[unit];
-  int s, oldtrig, toread, err = 0;
-
-  s = spltty();
-      
-  oldtrig = info->chan[chan].fifotrig; /* save official trigger value */   
-  while (uio->uio_resid >= sizeof(u_short)) /* while uio has space */
-   {
-     if (!info->chan[chan].fifosize) /* if we have an empty fifo */
-      {
-        if (ioflag & IO_NDELAY) /* exit if we are non-blocking */
-	   { err = EWOULDBLOCK;
-	     break; 
-           }
-        /* Start filling fifo on first blocking read */
-	if (info->chan[chan].status == STATUS_INIT)
-	     info->chan[chan].status = STATUS_INUSE;	 
-        /* temporarily adjust the fifo trigger to be optimal size */
-	info->chan[chan].fifotrig = 
-	  min (READMAXTRIG, uio->uio_resid / sizeof(u_short));
-	/* lets sleep until we have some io available or timeout */
-        err = tsleep (&(info->chan[chan].fifo), ALOGPRI | PCATCH, ALOGMSG,
-			 info->chan[chan].fifotrig*READTIMO);
-	if (err == EWOULDBLOCK)
-	 {    printf (DEVFORMAT ": read timeout\n", unit,
-	 	       'a'+EMUX(chan), IMUX(chan));	    
-	 }
-        if (err == ERESTART) err = EINTR; /* don't know how to restart */
-        if (err) break; /* exit if any kind of error or signal */
-      }
-	 
-     /* ok, now if we got here there is something to read from the fifo */
-     
-     /* calculate how many entries we can read out from the fifostart
-      * pointer */ 
-     toread = min (uio->uio_resid / sizeof(u_short), 
-		   min (info->chan[chan].fifosize, 
-		         FIFOSIZE - info->chan[chan].fifostart));
-     /* perform the move, if there is an error then exit */
-     if (err = uiomove((caddr_t)
-			&(info->chan[chan].fifo[info->chan[chan].fifostart]), 
-	                   toread * sizeof(u_short), uio)) break;
-     info->chan[chan].fifosize -= toread; /* fifo this much smaller */ 
-     info->chan[chan].fifostart += toread; /* we got this many more */
-     if (info->chan[chan].fifostart == FIFOSIZE)
-       info->chan[chan].fifostart = 0; /* wrap around fifostart */
-      
-   }
-  info->chan[chan].fifotrig = oldtrig; /* restore trigger changes */
-  splx(s);		       
-  return err;
-}
-
-   
-/* open a channel */
-static int alog_open (dev_t dev, int oflags, int devtype, struct proc *p)
-{
-  int unit = UNIT(dev); /* get unit no */
-  int chan = CHANNEL(dev); /* get channel no */
-  talog_unit *info; 
-  int s; /* priority */
-  int cur;
-   
-  if ((unit >= NALOG) || (unit >= MAXUNITS) || (chan >= NUMCHANNELS))
-      return ENXIO; /* unit and channel no ok ? */
-  if (!alog_unit[unit]) return ENXIO; /* unit attached */
-  info = alog_unit[unit]; /* ok, this is valid now */
-  
-  if (info->chan[chan].status) return EBUSY; /* channel busy */
-  if (oflags & FREAD)
-   {
-     s=spltty();
-     info->chan[chan].status = STATUS_INIT; /* channel open, read waiting */
-     info->chan[chan].fifostart = info->chan[chan].fifoend =
-	info->chan[chan].fifosize = 0;/* fifo empty */
-     info->chan[chan].fifotrig = DEFAULT_FIFO_TRIGGER;
-     if (info->firstchan < 0) /* if empty chain */
-      {
-	info->firstchan = info->curchan = chan; /* rev up the list */
-	info->chan[chan].nextchan = -1; /* end of the list */
-      }
-     else /* non empty list must insert */
-      {	 
-	if (chan < info->firstchan) /* this one must become first in list */
-	 {
-	   info->chan[chan].nextchan = info->firstchan;
-	   info->firstchan = chan;  
-	 }
- 	else /* insert this one as second - last in chan list */
-	 {
-	   cur = info->firstchan;
-	    
-	   /* traverse list as long as cur is less than chan and cur is
-	    * not last in list */
-	   while ((info->chan[cur].nextchan < chan) && 
-	           (info->chan[cur].nextchan >= 0))
-	     cur = info->chan[cur].nextchan; 
-	   
-	   /* now cur should point to the entry right before yours */
-	   info->chan[chan].nextchan = info->chan[cur].nextchan;
-	   info->chan[cur].nextchan = chan; /* insert yours in */
-	 }
-      }
-     splx(s); 
-     return 0; /* open successful */  
-   }
-  return EPERM; /* this is a read only device */ 
-}
-
-
-/* close a channel */
-static int alog_close (dev_t dev, int fflag, int devtype, struct proc *p)
-{
-  int unit = UNIT(dev);
-  int chan = CHANNEL(dev);
-  talog_unit *info = alog_unit[unit];
-  int s;
-  int cur; 
-   
-  s = spltty();
-  info->chan[chan].status = STATUS_UNUSED; 
-  
-  /* what if we are in the middle of a conversion ?
-   * then smoothly get us out of it: */
-  if (info->curchan == chan)
-   { /* if we are last in list set curchan to first in list */
-     if ((info->curchan = info->chan[chan].nextchan) < 0)
-      info->curchan = info->firstchan;
-
-     info->state = STATE_SETUP;
-   }
-   
-  /* if this is the first channel, then make the second channel the first
-   * channel (note that if this is also the only channel firstchan becomes
-   * -1 and so the list is marked as empty */
-   
-  if (chan == info->firstchan) 
-   info->firstchan = info->chan[chan].nextchan;
-  else /* ok, so there must be at least 2 channels (and it is not the first) */
-   {  
-     cur = info->firstchan;
-
-     /* find the entry before it (which must exist if you are closing) */ 
-     while (info->chan[cur].nextchan < chan) 
-	cur = info->chan[cur].nextchan;
-     /* at this point we must have the entry before ours */
-     info->chan[cur].nextchan = info->chan[chan].nextchan; /* give our link */       
-   
-   }
-  
-  splx(s);
-   
-  return 0; /* close always successful */
-}
-
-
-/* The probing routine - returns number of bytes needed */
-static int alog_probe (struct isa_device *idp)
-{
-  int unit = idp->id_unit;  /* this device unit number */
-  int iobase = idp->id_iobase; /* the base address of the unit */
-  int addr; 
-   
-  if ((unit < 0) || (unit >= NALOG) || (unit >= MAXUNITS))
-   { 
-     printf ("alog: invalid unit number (%d)\n", unit);
-     return 0;
-   }
-   
-  /* the unit number is ok, lets check if used */
-  if (alog_unit[unit]) 
-   {
-     printf ("alog: unit (%d) already attached\n", unit);
-     return 0;
-   }
-
-  if (inb (iobase+STATUS) & EOC) return 0; /* End of conv bit should be 0 */
-  for (addr=0; addr<NUMIMUXES; addr++)
-   {
-     outb (iobase+STATUS, EMUXMASK|addr);/* output ones to upper nibbl+addr */ 
-     /* get back a zero in MSB and the addr where you put it */
-     if ((inb (iobase+STATUS) & (EOC|IMUXMASK)) != addr) return 0;
-   }
- 
-  return NUMPORTS; /* this device needs this many ports */ 
-}
-
-
-/* setup the info structure correctly for reloading clock 2 after interrupt */
-static int sync_clock2 (int unit, long period)
-{
-  int clockper;
-  talog_unit *info = alog_unit[unit];
-   
-  if ((period > MAX_MICRO_PERIOD) || (period < MIN_MICRO_PERIOD))
-     return -1; /* error period too long */
-  info->microperiod = period; /* record the period */   
-  clockper = (CLOCK2FREQ * period) / PRIMARY_STATES;
-  info->perlo = clockper & 0xff; /* least sig byte of clock period */
-  info->perhi = ((clockper & 0xff00) >> 8); /* most sig byte of clock period */
-  return 0;
-}
-
-
-/* The attachment routine - returns true on success */
-static int alog_attach (struct isa_device *idp)
-{
-  int unit = idp->id_unit;  /* this device unit number */   
-  talog_unit *info; /* pointer to driver specific info for unit */
-  int chan; /* the channel used for creating devfs nodes */
-   
-  idp->id_ointr = alogintr;
-  if (!(info = malloc(sizeof(*info), M_DEVBUF, M_NOWAIT)))
-   {
-     printf ("alog%d: cannot allocate driver storage\n", unit);
-     return 0;
-   }
-  alog_unit[unit] = info; /* make sure to save the pointer */
-  bzero (info, sizeof(*info)); /* clear info structure to all false */
-  info->isaunit = idp;  /* store ptr to isa device information */
-  sync_clock2 (unit, DEFAULT_MICRO_PERIOD); /* setup perlo and perhi */ 
-  info->firstchan = -1; /* channel lists are empty */
-   
-  /* insert devfs nodes */
-  
-#ifdef DEVFS   
-  for (chan=0; chan<NUMCHANNELS; chan++)
-    info->chan[chan].devfs_token = 
-     devfs_add_devswf(&alog_cdevsw, LMINOR(unit, chan), DV_CHR,
-	              UID_ROOT, GID_WHEEL, 0400, DEVFORMAT,
-		        unit, 'a'+EMUX(chan), IMUX(chan));
-#endif   
-
-  printf ("alog%d: %d channels, %d bytes/FIFO, %d entry trigger\n",
-            unit, NUMCHANNELS, FIFOSIZE*sizeof(u_short), 
-            DEFAULT_FIFO_TRIGGER);
-  alogintr (unit); /* start the periodic interrupting process */    
-  return 1; /* obviously successful */
-}
-
-
-/* Unit interrupt handling routine (interrupts generated by clock 2) */
-static void alogintr (int unit)
-{
-  talog_unit *info = alog_unit[unit];
-  int iobase = info->isaunit->id_iobase;
-  u_short fifoent;
-   
-   
-  if (info->firstchan >= 0) /* ? is there even a chan list to traverse */
-   switch (info->state)
-    {  
-      case STATE_READ: 
-       if (info->chan[info->curchan].status == STATUS_INUSE)
-	{ 
-         if (inb (iobase+STATUS) & EOC) /* check that conversion finished */
-	  printf (DEVFORMAT ": incomplete conversion\n", unit,
-	 	   'a'+EMUX(info->curchan), IMUX(info->curchan));	    
-	 else /* conversion is finished (should always be) */
-	  {   
-	   fifoent = (inb (iobase+ADHIGH) << 8) +
-	               inb (iobase+ADLOW);
-           if (putfifo(&(info->chan[info->curchan]), fifoent))
-    	    {
-	       printf (DEVFORMAT ": fifo overflow\n", unit,
-	 	       'a'+EMUX(info->curchan), IMUX(info->curchan));	    
-	    }
-           if (info->chan[info->curchan].fifosize >=
-	        info->chan[info->curchan].fifotrig)
-	    {
-	      /* if we've reached trigger levels */
-	      selwakeup (&(info->chan[info->curchan].readpoll));
-	      wakeup (&(info->chan[info->curchan].fifo));
-	    }
-	  }
-	 }
-       /* goto setup state for next channel on list */
-       if ((info->curchan = info->chan[info->curchan].nextchan) < 0)
-	info->curchan = info->firstchan;  
-       /* notice lack of break here this implys a STATE_SETUP */ 
-      case STATE_SETUP: /* set the muxes and let them settle */
-#if NUMCHANNELS > NUMIMUXES    /* only do this if using external muxes */
-       outb (iobase+STATUS, 
-	      EMUXMAKE(info->curchan) | IMUX(info->curchan) | IEN);
-       info->state = STATE_CONVERT;
-       break;
-#endif
-      case STATE_CONVERT: 
-       outb (iobase+STATUS, 
-	      EMUXMAKE(info->curchan) | IMUX(info->curchan) | IEN);
-       outb (iobase+ADHIGH, 0); /* start the conversion */
-       info->state = STATE_READ;
-       break;
-    }
-  else /* this is kind of like an idle mode */ 
-   {
-      outb (iobase+STATUS, IEN); /* no list keep getting interrupts though */
-      /* since we have no open channels spin clock rate down to 
-       * minimum to save interrupt overhead */
-      outb (iobase+CNTRCNTRL, LD2MODE4); /* counter 2 to mode 4 strobe */
-      outb (iobase+CNTR2, 0xff); /* longest period we can generate */
-      outb (iobase+CNTR2, 0xff); 
-      return;   
-   }
-  outb (iobase+CNTRCNTRL, LD2MODE4); /* counter 2 to mode 4 strobe */
-  outb (iobase+CNTR2, info->perlo); /* low part of the period count */
-  outb (iobase+CNTR2, info->perhi); /* high part of the period count */
-}
-
-   
-/* this will put an entry in fifo, returns 1 if the first item in 
- * fifo was wiped (overflow) or 0 if everything went fine */
-static int putfifo (talog_chan *pchan, u_short fifoent)
-{   
-   pchan->fifo[pchan->fifoend] = fifoent; /* insert the entry in */
-   pchan->fifoend++; /* one more in fifo */
-   if (pchan->fifoend == FIFOSIZE) pchan->fifoend = 0; /* wrap around */ 
-   /* note: I did intend to write over the oldest entry on overflow */
-   if (pchan->fifosize == FIFOSIZE) /* overflowing state already */
-    {
-       pchan->fifostart++;
-       if (pchan->fifostart == FIFOSIZE) pchan->fifostart = 0;
-       return 1; /* we overflowed */
-    }
-   pchan->fifosize++; /* actually one bigger, else same size */
-   return 0; /* went in just fine */ 
-}
-   
-
-/* Driver initialization */
-static void alog_drvinit (void *unused)
-{
-  dev_t dev;  /* Type for holding device major/minor numbers (int) */
-
-  if (!alog_devsw_installed)
-   {
-     dev = makedev (CDEV_MAJOR, 0);  /* description of device major */
-     cdevsw_add (&dev, &alog_cdevsw, NULL);  /* put driver in cdev table */
-     alog_devsw_installed=1;
-   }
-}
-
-/* System initialization call instance */
-
-SYSINIT (alogdev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+CDEV_MAJOR,
-         alog_drvinit,NULL);
-
-#endif