start restructuring

1 files changed, 0 insertions, 247 deletions

diff --git a/libmpio/ecc.c b/libmpio/ecc.c
deleted file mode 100644
index 67cb7c1..0000000
--- a/libmpio/ecc.c
+++ /dev/null
@@ -1,247 +0,0 @@
-/* 
- *
- * $Id: ecc.c,v 1.3 2002/10/13 14:37:41 germeier Exp $
- *
- * Library for USB MPIO-*
- *
- * Markus Germeier (mager@tzi.de)
- *
- * 
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * */
-
-#include "ecc.h"
-#include "debug.h"
-
-BYTE get_bit(BYTE, int);
-
-/* TODO: fix correctable errors */
-
-inline BYTE 
-get_bit(BYTE d, int offset)
-{
-  return ((d >> offset) & 0x01 );
-}
-
-int 
-mpio_ecc_256_gen(BYTE *data, BYTE *ecc)
-{
-  BYTE p1, p1_;
-  BYTE p2, p2_;
-  BYTE p4, p4_;
-
-  BYTE p08, p08_;
-  BYTE p16, p16_;
-  BYTE p32, p32_;
-  BYTE p64, p64_;
-
-  BYTE p0128, p0128_;
-  BYTE p0256, p0256_;
-  BYTE p0512, p0512_;
-  BYTE p1024, p1024_;
-
-  int i, j;
-
-  /* init */
-  p1=p1_=0;
-  p2=p2_=0;
-  p4=p4_=0;
-
-  p08=p08_=0;
-  p16=p16_=0;
-  p32=p32_=0;
-  p64=p64_=0;
-
-  p0128=p0128_=0;
-  p0256=p0256_=0;
-  p0512=p0512_=0;
-  p1024=p1024_=0;
-
-  /* vertical */
-  for (i=0; i<256; i++) {
-    
-    /* p1, p1_ */
-    p1 ^= (get_bit(data[i], 7) ^
-	   get_bit(data[i], 5) ^
-	   get_bit(data[i], 3) ^
-	   get_bit(data[i], 1));
-    p1_^= (get_bit(data[i], 6) ^
-	   get_bit(data[i], 4) ^
-	   get_bit(data[i], 2) ^
-	   get_bit(data[i], 0));
-
-    /* p2, p2_ */
-    p2 ^= (get_bit(data[i], 7) ^
-	   get_bit(data[i], 6) ^
-	   get_bit(data[i], 3) ^
-	   get_bit(data[i], 2));
-    p2_^= (get_bit(data[i], 5) ^
-	   get_bit(data[i], 4) ^
-	   get_bit(data[i], 1) ^
-	   get_bit(data[i], 0));
-
-    /* p4, p4_ */
-    p4 ^= (get_bit(data[i], 7) ^
-	   get_bit(data[i], 6) ^
-	   get_bit(data[i], 5) ^
-	   get_bit(data[i], 4));
-    p4_^= (get_bit(data[i], 3) ^
-	   get_bit(data[i], 2) ^
-	   get_bit(data[i], 1) ^
-	   get_bit(data[i], 0));
-  }
-
-  /* horizontal */
-  for (i=0; i<8; i++) {
-    
-    for (j=0; j<256; j++) {
-  
-      /* p08, p08_ */
-      if ((j & 0x01) == 0) 
-	p08_^= get_bit(data[j], i);
-      if ((j & 0x01) == 1) 
-	p08 ^= get_bit(data[j], i);
-      
-      /* p16, p16_ */
-      if (((j/2) & 0x01) == 0)
-	p16_^= get_bit(data[j], i);
-      if (((j/2) & 0x01) == 1)
-	p16^= get_bit(data[j], i);
-
-      /* p32, p32_ */
-      if (((j/4) & 0x01) == 0)
-	p32_^= get_bit(data[j], i);
-      if (((j/4) & 0x01) == 1)
-	p32^= get_bit(data[j], i);
-
-      /* p64, p64_ */
-      if (((j/8) & 0x01) == 0)
-	p64_^= get_bit(data[j], i);
-      if (((j/8) & 0x01) == 1)
-	p64^= get_bit(data[j], i);
-
-
-      /* p0128, p0128_ */
-      if (((j/16) & 0x01) == 0) 
-	p0128_^= get_bit(data[j], i);
-      if (((j/16) & 0x01) == 1) 
-	p0128 ^= get_bit(data[j], i);
-      
-      /* p0256, p0256_ */
-      if (((j/32) & 0x01) == 0)
-	p0256_^= get_bit(data[j], i);
-      if (((j/32) & 0x01) == 1)
-	p0256^= get_bit(data[j], i);
-
-      /* p0512, p0512_ */
-      if (((j/64) & 0x01) == 0)
-	p0512_^= get_bit(data[j], i);
-      if (((j/64) & 0x01) == 1)
-	p0512^= get_bit(data[j], i);
-
-      /* p1024, p1024_ */
-      if (((j/128) & 0x01) == 0)
-	p1024_^= get_bit(data[j], i);
-      if (((j/128) & 0x01) == 1)
-	p1024^= get_bit(data[j], i);
-
-    }
-  }  
-
-  ecc[0]=~((p64 << 7) | (p64_ << 6) | 
-	   (p32 << 5) | (p32_ << 4) |
-	   (p16 << 3) | (p16_ << 2) |
-	   (p08 << 1) | (p08_ << 0));  
-
-  ecc[1]=~((p1024 << 7) | (p1024_ << 6) | 
-	   (p0512 << 5) | (p0512_ << 4) |
-	   (p0256 << 3) | (p0256_ << 2) |
-	   (p0128 << 1) | (p0128_ << 0));  
-
-  ecc[2]=~((p4 << 7) | (p4_ << 6) | 
-	   (p2 << 5) | (p2_ << 4) |
-	   (p1 << 3) | (p1_ << 2));  
-
-  return 0;
-}
-
-
-int
-mpio_ecc_256_check(BYTE *data, BYTE *ecc)
-{
-  BYTE own_ecc[3];
-  BYTE check[3];
-  BYTE c;
-  BYTE line, col;
-  
-  int v, i;
-  
-  mpio_ecc_256_gen(data, own_ecc);
-  if ((own_ecc[0]^ecc[0])|
-      (own_ecc[1]^ecc[1])|
-      (own_ecc[2]^ecc[2])) {
-    debugn(2, "ECC %2x %2x %2x vs. %2x %2x %2x\n", 
-	  ecc[0], ecc[1], ecc[2], own_ecc[0], own_ecc[1], own_ecc[2]);
-    check[0] = (ecc[0] ^ own_ecc[0]);
-    check[1] = (ecc[1] ^ own_ecc[1]);
-    check[2] = (ecc[2] ^ own_ecc[2]);
-    
-    v=1;
-    for(i=0; i<4; i++)
-      {
-	if (!((get_bit(check[1], i*2) ^
-	       (get_bit(check[1], i*2+1)))))
-	  v=0;
-	if (!((get_bit(check[0], i*2) ^
-	       (get_bit(check[0], i*2+1)))))
-	  v=0;
-      }
-    for(i=1; i<4; i++)
-      {
-	if (!((get_bit(check[2], i*2) ^
-	       (get_bit(check[2], i*2+1)))))
-	  v=0;
-      }
-    
-    if (v) {
-      debug("correctable error detected ... fixing the bit\n");
-      line = get_bit(check[1], 7) * 128 +
-	get_bit(check[1], 5) * 64  +
-	get_bit(check[1], 3) * 32  +
-	get_bit(check[1], 1) * 16  +
-	get_bit(check[0], 7) * 8   +
-	get_bit(check[0], 5) * 4   +
-	get_bit(check[0], 3) * 2   +
-	get_bit(check[0], 1);
-      col  = get_bit(check[2], 7) * 4 +
-	get_bit(check[2], 5) * 2 +
-	get_bit(check[2], 3);
-      debug ("error in line: %d , col %d\n", line, col);
-      debug ("defect byte is: %02x\n", data[line]);
-      data[line] ^= ( 1 << col);
-      debug ("fixed  byte is: %02x\n", data[line]);
-    } else {				       
-      debug("uncorrectable error detected. Sorry you lose!\n");
-      return 1;
-    }
-  }
-  
-  return 0;  
-}
-
-
-  
-