start restructuring

1 files changed, 1213 insertions, 0 deletions

diff --git a/libmpio/src/io.c b/libmpio/src/io.c
new file mode 100644
index 0000000..eaaadd4
--- /dev/null
+++ b/libmpio/src/io.c
@@ -0,0 +1,1213 @@
+/* -*- linux-c -*- */
+
+/* 
+ *
+ * $Id: io.c,v 1.1 2003/04/23 08:34:15 crunchy Exp $
+ *
+ * Library for USB MPIO-*
+ *
+ * Markus Germeier (mager@tzi.de)
+ *
+ * uses code from mpio_stat.c by
+ * Yuji Touya (salmoon@users.sourceforge.net)
+ *
+ * 
+ * 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.
+ *
+ * */
+
+/* 
+ *
+ * low level I/O 
+ *
+ *
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "io.h"
+#include "debug.h"
+#include "ecc.h"
+
+BYTE model2externalmem(mpio_model_t);
+DWORD blockaddress_encode(DWORD);
+DWORD blockaddress_decode(BYTE *);
+void fatentry2hw(mpio_fatentry_t *, BYTE *, DWORD *);
+
+/* small hack to handle external addressing on different MPIO models */
+BYTE 
+model2externalmem(mpio_model_t model)
+{
+  BYTE m;
+
+  switch(model) 
+    {
+    case MPIO_MODEL_DMG:
+    case MPIO_MODEL_DMG_PLUS:
+      m = 0x80;
+      break;
+    default:
+      m = 0x10;
+    }
+
+  return m;
+}      
+
+/* encoding and decoding of blockaddresses */
+
+DWORD 
+blockaddress_encode(DWORD ba)
+{
+  WORD addr;
+  BYTE p = 0, c = 0;
+  BYTE high, low;
+
+  high = 0x10 | ((ba / 0x80) & 0x07);
+  low  = (ba * 2) & 0xff;
+    
+  c = high;
+  while (c) 
+    {
+      if (c & 0x01)
+	p ^= 1;
+      c /= 2;
+    }
+
+  c = low;
+  while (c) 
+    {
+      if (c & 0x01)
+	p ^= 0x01;
+      c /= 2;
+    }  
+  
+  addr = (high * 0x100) + low + p;
+
+  return addr;
+}
+
+
+DWORD 
+blockaddress_decode(BYTE *entry)
+{
+  WORD ba;
+  WORD value;
+  BYTE p=0, high, low;
+  int i, t;
+
+  /* check for "easy" defect block */
+  t=1;
+  for(i=0; i<0x10; i++)
+    if (entry[i] != 0)
+      t=0;
+  if (t)
+    return MPIO_BLOCK_DEFECT;
+
+  /* check for "easy" defect block */
+  t=1;
+  for(i=0; i<0x10; i++)
+    if (entry[i] != 0xff)
+      t=0;
+  if (t)
+    return MPIO_BLOCK_FREE;
+
+  /* check for "strange" errors */
+  if ((entry[6] != entry[11]) ||
+      (entry[7] != entry[12]))
+    {	  
+      debug("error: different block addresses found:\n");
+      hexdumpn(1, entry, 0x10);
+      return MPIO_BLOCK_DEFECT;
+    } 
+  
+  ba = entry[6] * 0x100 + entry[7];
+  
+  /* special values */
+  if (ba == 0xffff)
+    return MPIO_BLOCK_DEFECT;
+  if (ba == 0x0000)
+    return MPIO_BLOCK_CIS;
+
+  /* check parity */
+  value = ba;
+  while (value)
+    {
+      if (value & 0x01)
+	p ^= 0x01;
+      
+      value /= 2;
+    }
+  if (p) 
+    {
+      debug("parity error found in block address: %2x\n", ba);
+      return MPIO_BLOCK_DEFECT;      
+    }
+  
+  high = ((ba / 0x100) & 0x07);
+  low  = ((ba & 0x0ff) / 2);
+  
+  return (high * 0x80 + low);
+}
+
+/* foobar  */
+
+void 
+fatentry2hw(mpio_fatentry_t *f, BYTE *chip, DWORD *address)
+{
+  mpio_smartmedia_t *sm;
+  
+  if (f->mem == MPIO_INTERNAL_MEM) 
+    {
+      sm       = &f->m->internal;
+      /*       hexdump((char *)&f->entry, 4); */
+      /*       hexdump((char *)&f->hw_address, 4); */
+      *chip    = f->hw_address / 0x1000000;    
+      *address = f->hw_address & 0x0ffffff;
+    }
+  if (f->mem == MPIO_EXTERNAL_MEM) 
+    {
+      sm        = &f->m->external;
+      *chip     = MPIO_EXTERNAL_MEM;
+      *address  = mpio_zone_block_find_log(f->m, f->mem, f->entry);
+      debugn(3, "mager: %06x (logical: %04x)\n", *address, f->entry);
+    }
+  return;
+}
+
+/*
+ * zone management
+ */
+
+int   
+mpio_zone_init(mpio_t *m, mpio_cmd_t mem)
+{
+  mpio_smartmedia_t *sm;
+  int i;
+  int zone, block, e;
+  
+  if (mem != MPIO_EXTERNAL_MEM) 
+    {
+      debug("called function with wrong memory selection!\n");
+      return -1;
+    }
+  sm = &m->external;
+
+  for(i=0; i<sm->max_blocks; i++)
+    {
+      zone = i / MPIO_ZONE_PBLOCKS;
+      block= i % MPIO_ZONE_PBLOCKS;
+
+      e = i * 0x10;
+
+      sm->zonetable[zone][block]=blockaddress_decode(sm->spare+e);
+      
+      hexdumpn(4, sm->spare+e, 0x10);
+      debugn(2, "decoded: %04x\n", sm->zonetable[zone][block]);
+    }
+
+}
+
+DWORD 
+mpio_zone_block_find_log(mpio_t *m, mpio_cmd_t mem, DWORD lblock)
+{
+  mpio_smartmedia_t *sm;
+  int v;
+
+  if (mem != MPIO_EXTERNAL_MEM) 
+    {
+      debug("called function with wrong memory selection!\n");
+      return -1;
+    }
+  sm = &m->external;
+  
+  /* OK, I can't explain this right now, but it does work,
+   * see Software Driver v3.0, page 31
+   */
+  v = lblock + (sm->size/64);
+  
+  return (mpio_zone_block_find_seq(m, mem, v));
+}
+
+DWORD 
+mpio_zone_block_find_seq(mpio_t *m, mpio_cmd_t mem, DWORD lblock)
+{
+  mpio_smartmedia_t *sm;
+  int i, f, v;
+  int zone, block;
+  
+  if (mem != MPIO_EXTERNAL_MEM) 
+    {
+      debug("called function with wrong memory selection!\n");
+      return -1;
+    }
+  sm = &m->external;
+
+  if ((lblock>=MPIO_BLOCK_CIS) && (lblock<(MPIO_BLOCK_CIS + BLOCK_SECTORS)))
+    {
+      zone  = 0;
+      block = MPIO_BLOCK_CIS;
+    } else {  
+      zone  = lblock / MPIO_ZONE_LBLOCKS;
+      block = lblock % MPIO_ZONE_LBLOCKS;
+    }
+  
+  f=0;
+  for (i=(MPIO_ZONE_PBLOCKS-1); i >=0; i--)
+    {
+
+      if (sm->zonetable[zone][i]==block)
+	{
+	  f++;
+	  v=i;
+	}
+    }
+
+  if (f>1)
+    debug("found more than one block, using first one\n");
+  
+  if (!f) 
+    {      
+      debugn(2, "block not found\n");
+      return MPIO_BLOCK_NOT_FOUND;
+    }
+  
+  return ((zone * BLOCK_SECTORS * MPIO_ZONE_PBLOCKS ) + v * BLOCK_SECTORS);
+}
+
+DWORD
+mpio_zone_block_set_free(mpio_t *m, mpio_cmd_t mem, DWORD lblock)
+{
+  DWORD value;
+  int zone, block;
+  mpio_smartmedia_t *sm;
+
+  if (mem != MPIO_EXTERNAL_MEM)
+    {
+      debug("called function with wrong memory selection!\n");
+      return -1;
+    }
+  sm = &m->external;
+
+  value = mpio_zone_block_find_log(m, mem, lblock);
+
+  mpio_zone_block_set_free_phys(m, mem, value);
+  
+  return value;
+}
+
+void
+mpio_zone_block_set_free_phys(mpio_t *m, mpio_cmd_t mem, DWORD value)
+{
+  int zone, block;
+  mpio_smartmedia_t *sm;
+
+  if (mem != MPIO_EXTERNAL_MEM) 
+    {
+      debug("called function with wrong memory selection!\n");
+      return;
+    }
+  sm = &m->external;
+
+  zone  = value / BLOCK_SECTORS;
+  block = zone  % MPIO_ZONE_PBLOCKS;
+  zone  = zone  / MPIO_ZONE_PBLOCKS;
+
+  sm->zonetable[zone][block] = MPIO_BLOCK_FREE;
+
+  return;
+}
+
+void
+mpio_zone_block_set_defect_phys(mpio_t *m, mpio_cmd_t mem, DWORD value)
+{
+  int zone, block;
+  mpio_smartmedia_t *sm;
+
+  if (mem != MPIO_EXTERNAL_MEM) 
+    {
+      debug("called function with wrong memory selection!\n");
+      return;
+    }
+  sm = &m->external;
+
+  zone  = value / BLOCK_SECTORS;
+  block = zone  % MPIO_ZONE_PBLOCKS;
+  zone  = zone  / MPIO_ZONE_PBLOCKS;
+
+  sm->zonetable[zone][block] = MPIO_BLOCK_DEFECT;
+
+  return;
+}
+
+void
+mpio_zone_block_set(mpio_t *m, mpio_cmd_t mem, DWORD pblock)
+{
+  int zone, block, pb;
+  
+  pb    = pblock / BLOCK_SECTORS;
+  zone  = pb / MPIO_ZONE_PBLOCKS;
+  block = pb % MPIO_ZONE_PBLOCKS;
+
+  m->external.zonetable[zone][block] = MPIO_BLOCK_FREE ;
+
+}
+
+DWORD 
+mpio_zone_block_find_free_log(mpio_t *m, mpio_cmd_t mem, DWORD lblock)
+{
+  mpio_smartmedia_t *sm;
+  int v;
+
+  if (mem != MPIO_EXTERNAL_MEM) 
+    {
+      debug("called function with wrong memory selection!\n");
+      return -1;
+    }
+  sm = &m->external;
+  
+  /* OK, I can't explain this right now, but it does work,
+   * see Software Driver v3.0, page 31
+   */
+  v = lblock + (sm->size/64);
+  
+  return (mpio_zone_block_find_free_seq(m, mem, v));
+}
+
+DWORD 
+mpio_zone_block_find_free_seq(mpio_t *m, mpio_cmd_t mem, DWORD lblock)
+{
+  DWORD value;
+  int zone, block, i;
+  mpio_smartmedia_t *sm;
+
+  if (mem != MPIO_EXTERNAL_MEM) 
+    {
+      debug("called function with wrong memory selection!\n");
+      return -1;
+    }
+  sm = &m->external;
+  
+  value = mpio_zone_block_find_seq(m, mem, lblock);
+
+  if (value != MPIO_BLOCK_NOT_FOUND)
+    {
+      debug("logical block numbers is already assigned! (%4x)\n", lblock);
+      exit (-1);
+    }
+
+  if ((lblock>=MPIO_BLOCK_CIS) && (lblock<(MPIO_BLOCK_CIS + BLOCK_SECTORS)))
+    {
+      zone  = 0;
+      block = MPIO_BLOCK_CIS;
+    } else {  
+      zone  = lblock / MPIO_ZONE_LBLOCKS;
+      block = lblock % MPIO_ZONE_LBLOCKS;
+    }
+  
+  i=0;
+  while ((sm->zonetable[zone][i]!=MPIO_BLOCK_FREE) && (i<MPIO_ZONE_PBLOCKS))
+    i++;
+
+  if (i==MPIO_ZONE_PBLOCKS)
+    {
+      debug("could not find free pysical block\n");
+      return MPIO_BLOCK_NOT_FOUND;
+    }
+
+  debugn(2, "set new sector in zonetable, [%d][%d] = %4x\n", zone, i, block);
+  
+  sm->zonetable[zone][i] = block;
+
+  return ((zone * BLOCK_SECTORS * MPIO_ZONE_PBLOCKS ) + i * BLOCK_SECTORS);
+}
+
+
+WORD 
+mpio_zone_block_get_logical(mpio_t *m, mpio_cmd_t mem, DWORD pblock)
+{
+  int zone, block, pb;
+  
+  pb    = pblock / BLOCK_SECTORS;
+  zone  = pb / MPIO_ZONE_PBLOCKS;
+  block = pb % MPIO_ZONE_PBLOCKS;
+  
+  return m->external.zonetable[zone][block];
+}
+
+
+  
+
+
+/*
+ * low-low level functions
+ */
+
+/* 
+ * Set command packet  
+ *
+ * parameter:
+ *
+ * cmd:       commando code
+ * mem:       internal/external
+ * index:     sector/block
+ * size:      size of used memory chip
+ * wsize:     write size, only for PUT_BLOCK
+ * buffer:    output buffer of command packet
+ *
+ */
+
+int
+mpio_io_set_cmdpacket(mpio_t *m, mpio_cmd_t cmd, mpio_mem_t mem, DWORD index,
+		      WORD size, BYTE wsize, BYTE *buffer) 
+{
+  BYTE memory;
+
+  /* clear cmdpacket*/
+  memset(buffer, 0, 0x40);  
+
+  *buffer = cmd;
+  memory = mem;
+  if (mem == MPIO_EXTERNAL_MEM)
+    memory = model2externalmem(m->model);
+  
+  *(buffer + 0x01) =   memory;
+  *(buffer + 0x03) =   (BYTE) (index & 0x00ff);
+  *(buffer + 0x04) =   (BYTE)((index & 0xff00) >> 8);
+  /*  SM cards with less or equal 32 MB only need 2 Bytes
+   *  to address sectors or blocks.
+   *  The highest byte has to be 0xff in that case!
+   */
+  if (size <= 32) 
+    {
+      *(buffer + 0x05) = 0xff;
+    } else {  
+      *(buffer + 0x05) = (BYTE) (index >> 16);
+    }  
+  /* is this always 0x48 in case of a block write ?? */
+  *(buffer + 0x06) = wsize;  
+
+  memcpy((buffer + 0x3b), "jykim", 5);
+
+  return (0);
+}
+
+/*
+ * write chunk of data to MPIO filedescriptor
+ *
+ * parameter:
+ *
+ * fd:        filedescriptor
+ * block:     data buffer (has to be num_bytes)
+ * num_bytes: size of data buffer
+ *
+ */
+int
+mpio_io_bulk_write(int fd, BYTE *block, int num_bytes)
+{
+  BYTE *p;
+  int count, bytes_left, bytes_written;
+
+  bytes_left = num_bytes;
+  bytes_written = 0;
+  p = block;
+
+  do
+  {
+    count = write (fd, p, bytes_left);
+    if (count > 0)
+    {
+      p += count;
+      bytes_written += count;
+      bytes_left -= count;
+    }
+  } while (bytes_left > 0 && count > 0);
+
+  return bytes_written;
+}
+
+/*
+ * read chunk of data from MPIO filedescriptor
+ *
+ * parameter:
+ *
+ * fd:        filedescriptor
+ * block:     return buffer (has to be num_bytes)
+ * num_bytes: size of return buffer
+ *
+ */
+int
+mpio_io_bulk_read (int fd, BYTE *block, int num_bytes)
+{
+  int total_read, count, bytes_left;
+  BYTE *p;
+
+  total_read = 0;
+  bytes_left = num_bytes;
+  p = block;
+
+  do
+  {
+    count = read (fd, p, bytes_left);
+
+    if (count > 0)
+      {
+        total_read += count;
+	bytes_left -= count;
+	p += count;
+      }
+  } while (total_read < num_bytes && count > 0);
+
+  return total_read;
+}
+
+/*
+ * low level functions
+ */
+
+/* 
+ * read version block from MPIO
+ *
+ * parameter:
+ *
+ * m:         mpio context
+ * buffer:    return buffer (has to be CMD_SIZE)
+ *
+ */
+int
+mpio_io_version_read(mpio_t *m, BYTE *buffer)
+{
+  int nwrite, nread;
+  BYTE cmdpacket[CMD_SIZE], status[CMD_SIZE];
+
+  /*  Send command packet to MPIO  */
+  mpio_io_set_cmdpacket (m, GET_VERSION, 0, 0, 0xff, 0, cmdpacket);
+
+  debugn  (5, ">>> MPIO\n");
+  hexdump (cmdpacket, sizeof(cmdpacket));
+
+  nwrite = mpio_io_bulk_write (m->fd, cmdpacket, 0x40);
+
+  if (nwrite != CMD_SIZE) 
+    {
+      debug ("Failed to send command.\n\n");
+      close (m->fd);
+      return 0;    
+    }
+
+  /*  Receive packet from MPIO  */
+  nread = mpio_io_bulk_read (m->fd, status, 0x40);
+
+  if (nread == -1 || nread != 0x40) 
+    {
+      debug ("Failed to read Sector.\n%x\n",nread);
+      close (m->fd);
+      return 0;    
+    }
+
+  debugn (5, "<<< MPIO\n");
+  hexdump (status, 0x40);
+
+  memcpy(buffer, status, 0x40);
+  
+  return CMD_SIZE;
+}
+
+/* 
+ * read sector from SmartMedia
+ *
+ * parameter:
+ *
+ * m:         mpio context
+ * mem:       MPIO_{INTERNAL,EXTERNAL}_MEM
+ * index:     index number of sector to read
+ * output:    return buffer (has to be SECTOR_SIZE)
+ *
+ */
+
+/* right now we assume we only want to read single sectors from 
+ * the _first_ internal memory chip 
+ */
+
+int
+mpio_io_sector_read(mpio_t *m, BYTE mem, DWORD index, BYTE *output)
+{
+  mpio_smartmedia_t *sm=0;
+  DWORD sector;
+  int nwrite, nread;
+  BYTE cmdpacket[CMD_SIZE], recvbuff[SECTOR_TRANS];
+
+  if (mem == MPIO_INTERNAL_MEM) sm = &m->internal;
+  if (mem == MPIO_EXTERNAL_MEM) sm = &m->external;
+  if (!sm)
+    {
+      debug("error in memory selection, aborting\n");      
+      exit (-1);
+    }
+
+  if (mem == MPIO_INTERNAL_MEM)
+    {
+      sector = index;
+    } else {      
+      /* find the correct physical block first! */
+      if ((index>=MPIO_BLOCK_CIS) && (index<(MPIO_BLOCK_CIS + BLOCK_SECTORS)))
+	{
+	  sector = mpio_zone_block_find_seq(m, mem, MPIO_BLOCK_CIS);
+	  sector+= (index % MPIO_BLOCK_CIS);
+	} else {
+	  sector = mpio_zone_block_find_seq(m, mem, (index / 0x20));
+	  sector+= (index % 0x20);
+	}
+    }
+
+  debugn (2, "sector: %8x (%06x)\n", index, sector);
+
+  mpio_io_set_cmdpacket (m, GET_SECTOR, mem, sector, sm->size, 0, cmdpacket);
+
+  debugn (5, "\n>>> MPIO\n");
+  hexdump (cmdpacket, sizeof(cmdpacket));
+    
+  nwrite = mpio_io_bulk_write (m->fd, cmdpacket, 0x40);
+
+  if(nwrite != CMD_SIZE) 
+    {
+      debug ("\nFailed to send command.\n\n");
+      close (m->fd);
+      return 1;
+    }
+
+  /*  Receive packet from MPIO   */
+  nread = mpio_io_bulk_read (m->fd, recvbuff, SECTOR_TRANS);
+
+  if(nread != SECTOR_TRANS) 
+    {
+      debug ("\nFailed to read Sector.\n%x\n", nread);
+      close (m->fd);
+      return 1;
+    }
+
+  /* check ECC Area information */
+  if (mem==MPIO_EXTERNAL_MEM) 
+    {    
+      if (mpio_ecc_256_check (recvbuff,
+			      (recvbuff + SECTOR_SIZE + 13)) ||
+          mpio_ecc_256_check ((recvbuff + (SECTOR_SIZE / 2)),
+			      (recvbuff + SECTOR_SIZE + 8))    )
+      	debug ("ECC error @ (%02x : %06x)\n", mem, index);
+    }
+
+  /* This should not be needed:
+     * we don't have ECC information for the internal memory
+     * we only read the directory through this function
+   */
+  /*   if (mem==MPIO_INTERNAL_MEM)  */
+  /*     { */
+  /*       debugn(2, "WARNING, code for internal FAT entry (in ECC area)" */
+  /* 	    " not yet in place!!\n"); */
+  /*     } */
+  
+  debugn (5, "\n<<< MPIO\n");
+  hexdump (recvbuff, SECTOR_TRANS);
+
+  memcpy(output, recvbuff, SECTOR_SIZE);  
+
+  return 0;  
+}
+
+/* 
+ * write sector to SmartMedia
+ *
+ * parameter:
+ *
+ * m:         mpio context
+ * mem:       MPIO_{INTERNAL,EXTERNAL}_MEM
+ * index:     index number of sector to read
+ * input:     data buffer (has to be SECTOR_SIZE)
+ *
+ */
+
+/* right now we assume we only want to write single sectors from 
+ * the _first_ internal memory chip 
+ */
+
+int  
+mpio_io_sector_write(mpio_t *m, BYTE mem, DWORD index, BYTE *input)
+{
+  int nwrite;
+  mpio_smartmedia_t *sm;
+  DWORD pvalue;
+  DWORD block_address, ba;
+  BYTE cmdpacket[CMD_SIZE], sendbuff[SECTOR_TRANS];
+
+  if (mem == MPIO_INTERNAL_MEM) sm = &m->internal;
+  if (mem == MPIO_EXTERNAL_MEM) sm = &m->external;
+  if (!sm)
+    {
+      debug("error in memory selection, aborting\n");      
+      exit (-1);
+    }
+
+  /* we have to:
+   * - find the physical block (or allocate a new one)
+   * - calculate the logical block for zone management
+   */
+
+  if (mem == MPIO_EXTERNAL_MEM) 
+    {      
+      if (index==MPIO_BLOCK_DEFECT) 
+	{
+	  block_address = 0;
+	  pvalue = 0;
+	} else {
+	  if ((index>=MPIO_BLOCK_CIS) && 
+	      (index<(MPIO_BLOCK_CIS + BLOCK_SECTORS)))
+	    {
+	      block_address = 0;
+	      if (index==MPIO_BLOCK_CIS)
+		{
+		  pvalue=mpio_zone_block_find_free_seq(m, mem, index);  
+		} else {
+		  /* find the block from the block list! */
+		  pvalue=mpio_zone_block_find_seq(m, mem, MPIO_BLOCK_CIS);
+		}
+	      if (pvalue != MPIO_BLOCK_NOT_FOUND)
+		pvalue = pvalue + index - MPIO_BLOCK_CIS;
+	      
+	    } else {      
+	      block_address = blockaddress_encode(index / BLOCK_SECTORS); 
+	      if ((index % BLOCK_SECTORS) == 0)
+		{
+		  /* this is the first write to the block: allocate a new one */
+		  /* ... and mark it with the block_address */
+		  pvalue=mpio_zone_block_find_free_seq(m, mem, 
+						       (index / BLOCK_SECTORS));      
+		} else {
+		  /* find the block from the block list! */
+		  pvalue=mpio_zone_block_find_seq(m, mem, (index / BLOCK_SECTORS));
+		}
+	      if (pvalue != MPIO_BLOCK_NOT_FOUND)
+		pvalue = pvalue + (index % BLOCK_SECTORS);
+	      
+	    }
+	  
+	  if (pvalue == MPIO_BLOCK_NOT_FOUND)
+	    {
+	      debug ("Oops, this should never happen! (%6x : %6x)\n", 
+		     index, block_address);
+	      exit (-1);
+	    }      
+	}
+    } else {
+      pvalue = index;
+    }
+
+  mpio_io_set_cmdpacket(m, PUT_SECTOR, mem, pvalue, sm->size, 0, cmdpacket);
+
+  debugn (5, "\n>>> MPIO\n");
+  hexdump (cmdpacket, sizeof(cmdpacket));
+    
+  nwrite = mpio_io_bulk_write(m->fd, cmdpacket, 0x40);
+
+  if(nwrite != CMD_SIZE) 
+    {
+      debug ("\nFailed to send command.\n\n");
+      close (m->fd);
+      return 1;
+    }
+
+  memset(sendbuff, 0, SECTOR_TRANS);
+  memset(sendbuff + SECTOR_SIZE, 0xff, 0x10);
+  memcpy(sendbuff, input, SECTOR_SIZE);
+  
+  if (mem==MPIO_EXTERNAL_MEM)    
+    {    
+      if (index == MPIO_BLOCK_DEFECT) {
+	memset(sendbuff + SECTOR_SIZE, 0, 0x10);
+	mpio_zone_block_set_defect_phys(m, mem, pvalue);
+      } else {
+	
+	/* generate ECC information for spare area ! */
+	mpio_ecc_256_gen(sendbuff, 
+			 sendbuff + SECTOR_SIZE + 0x0d);
+	mpio_ecc_256_gen(sendbuff + (SECTOR_SIZE / 2), 
+			 sendbuff + SECTOR_SIZE + 0x08);
+	if (index == MPIO_BLOCK_DEFECT) {
+	  memset(sendbuff + SECTOR_SIZE, 0, 0x10);
+	} else {	  
+	  if (index == MPIO_BLOCK_CIS) {
+	    memset(sendbuff + SECTOR_SIZE + 0x06, 0, 2);
+	    memset(sendbuff + SECTOR_SIZE + 0x0b, 0, 2);
+	  } else {	  
+	    ba = (block_address / 0x100) & 0xff;
+	    sendbuff[SECTOR_SIZE + 0x06] = ba;
+	    sendbuff[SECTOR_SIZE + 0x0b] = ba;
+	    
+	    ba = block_address & 0xff;
+	    sendbuff[SECTOR_SIZE + 0x07] = ba;
+	    sendbuff[SECTOR_SIZE + 0x0c] = ba;
+	  }
+	}
+	
+      }
+    }
+  
+  /* easy but working, we write back the FAT info we read before */
+  if (mem==MPIO_INTERNAL_MEM) 
+      memcpy((sendbuff+SECTOR_SIZE), sm->fat, 0x10);
+
+  debugn (5, "\n>>> MPIO\n");
+  hexdump(sendbuff, SECTOR_TRANS);
+
+  /*  write sector MPIO   */
+  nwrite = mpio_io_bulk_write(m->fd, sendbuff, SECTOR_TRANS);
+
+  if(nwrite != SECTOR_TRANS) 
+    {
+      debug ("\nFailed to read Sector.\n%x\n", nwrite);
+      close (m->fd);
+      return 1;
+    }
+
+  return 0;  
+}
+
+/*
+ * read/write of blocks
+ */
+int
+mpio_io_block_read(mpio_t *m, mpio_mem_t mem, mpio_fatentry_t *f, BYTE *output)
+{
+  int i=0;
+  int nwrite, nread;
+  mpio_smartmedia_t *sm;
+  BYTE  chip;
+  DWORD address;
+  BYTE cmdpacket[CMD_SIZE], recvbuff[BLOCK_TRANS];
+
+  if (mem == MPIO_INTERNAL_MEM) sm = &m->internal;
+  if (mem == MPIO_EXTERNAL_MEM) sm = &m->external;
+
+  fatentry2hw(f, &chip, &address);
+
+  mpio_io_set_cmdpacket(m, GET_BLOCK, chip, address, sm->size, 0, cmdpacket);
+
+  debugn(5, "\n>>> MPIO\n");
+  hexdump(cmdpacket, sizeof(cmdpacket));
+    
+  nwrite = mpio_io_bulk_write(m->fd, cmdpacket, CMD_SIZE);
+
+  if(nwrite != CMD_SIZE) 
+    {
+      debug ("\nFailed to send command.\n\n");
+      close (m->fd);
+      return 1;
+    }
+
+  /*  Receive packet from MPIO   */
+  nread = mpio_io_bulk_read(m->fd, recvbuff, BLOCK_TRANS);
+
+  if(nread != BLOCK_TRANS) 
+    {
+      debug ("\nFailed to read Block.\n%x\n",nread);
+      close (m->fd);
+      return 1;
+    }
+
+  debugn(5, "\n<<< MPIO\n");
+  hexdump(recvbuff, BLOCK_TRANS);
+
+  for (i = 0; i < BLOCK_SECTORS; i++) 
+    {
+      /* check ECC Area information */
+      if (mem==MPIO_EXTERNAL_MEM) {      
+	if (mpio_ecc_256_check ((recvbuff + (i * SECTOR_TRANS)),
+				((recvbuff +(i * SECTOR_TRANS) 
+				  + SECTOR_SIZE +13))) ||	
+	    mpio_ecc_256_check ((recvbuff + (i * SECTOR_TRANS) 
+				 + (SECTOR_SIZE / 2)),
+				((recvbuff +(i * SECTOR_TRANS) 
+				  + SECTOR_SIZE + 8))))
+	  debug ("ECC error @ (%02x : %06x)\n", chip, address);
+      }
+      
+      memcpy(output + (i * SECTOR_SIZE), 
+	     recvbuff + (i * SECTOR_TRANS), 
+	     SECTOR_SIZE);
+    }
+
+  return 0;  
+}
+
+/* Read spare is only usefull for the internal memory,
+ * the FAT lies there. It is updated during the
+ * mpio_io_{sector,block}_{read,write} operations.
+ *
+ * For external SmartMedia cards we have a "seperate" FAT
+ * which is read and updated just like on a regular floppy
+ * disc or hard drive.
+ *
+ */
+
+int
+mpio_io_spare_read(mpio_t *m, BYTE mem, DWORD index, WORD size,
+		   BYTE wsize, BYTE *output, int toread,
+		   mpio_callback_init_t progress_callback)
+{
+  mpio_smartmedia_t *sm;
+  int i;
+  int nwrite, nread;
+  int chip = 0;
+  int chips = 0;
+  BYTE cmdpacket[CMD_SIZE];
+
+  if (mem == MPIO_INTERNAL_MEM) sm = &m->internal;  
+  if (mem == MPIO_EXTERNAL_MEM) sm = &m->external;
+
+  chips = sm->chips;  
+  
+  for (chip = 1; chip <= chips; chip++) 
+    {
+      if (mem == MPIO_INTERNAL_MEM) 
+	mpio_io_set_cmdpacket(m, GET_SPARE_AREA, (1 << (chip-1)), 
+			      index, (size / sm->chips), 
+			      wsize, cmdpacket);
+      if (mem == MPIO_EXTERNAL_MEM) 
+	mpio_io_set_cmdpacket(m, GET_SPARE_AREA, mem, index, size, 
+			      wsize, cmdpacket);
+      debugn(5, "\n>>> MPIO\n");
+      hexdump(cmdpacket, sizeof(cmdpacket));
+      
+      nwrite = mpio_io_bulk_write(m->fd, cmdpacket, CMD_SIZE);
+      
+      if(nwrite != CMD_SIZE) {
+	debug ("\nFailed to send command.\n\n");
+	close (m->fd);
+	return 1;
+      }
+      
+      /*  Receive packet from MPIO   */
+      for (i = 0; i < (toread / chips / CMD_SIZE); i++) 
+	{	  
+	  nread = mpio_io_bulk_read (m->fd,
+				     output + (i * CMD_SIZE) +
+				     (toread / chips * (chip - 1)),
+				     CMD_SIZE);
+
+	  if ((progress_callback) && (i % 256))
+	    (*progress_callback)(mem, 
+				 (i*CMD_SIZE+(toread/chips*(chip-1))),
+				 toread );
+      
+	  if(nread != CMD_SIZE) 
+	    {
+	      debug ("\nFailed to read Block.\n%x\n",nread);
+	      close (m->fd);
+	      return 1;
+	    }
+	  debugn(5, "\n<<< MPIO\n");
+	  hexdump(output + (i * CMD_SIZE) + (toread / chips * (chip - 1)), 
+		  CMD_SIZE);
+	}
+    }
+  if (progress_callback)
+    (*progress_callback)(mem, toread, toread);
+  
+  return 0;  
+}
+
+int  
+mpio_io_block_delete(mpio_t *m, mpio_mem_t mem, mpio_fatentry_t *f)
+{
+  BYTE  chip=0;
+  DWORD address;
+  mpio_smartmedia_t *sm;
+
+  if (mem == MPIO_INTERNAL_MEM) sm = &m->internal;
+  if (mem == MPIO_EXTERNAL_MEM) sm = &m->external;
+
+  fatentry2hw(f, &chip, &address);
+
+  if (address == MPIO_BLOCK_NOT_FOUND)
+    {
+      debug("hmm, what happens here? (%4x)\n", f->entry);
+      return 0;
+    }
+
+  return (mpio_io_block_delete_phys(m, chip, address));
+}
+
+int
+mpio_io_block_delete_phys(mpio_t *m, BYTE chip, DWORD address)
+{
+  mpio_smartmedia_t *sm;
+  int nwrite, nread;
+  BYTE cmdpacket[CMD_SIZE], status[CMD_SIZE];
+  
+  /*  Send command packet to MPIO  */
+  
+  if (chip == MPIO_INTERNAL_MEM) sm = &m->internal;
+  /* hack to support 2+4 internal chips
+   * who ever allowed me to write code??? -mager
+   */
+  if (chip == (MPIO_INTERNAL_MEM+1)) sm = &m->internal;
+  if (chip == (MPIO_INTERNAL_MEM+3)) sm = &m->internal;
+  if (chip == (MPIO_INTERNAL_MEM+7)) sm = &m->internal;
+  if (chip == MPIO_EXTERNAL_MEM) 
+    {
+      sm = &m->external;
+      mpio_zone_block_set_free_phys(m, chip, address);
+    }
+
+  mpio_io_set_cmdpacket(m, DEL_BLOCK, chip, address, sm->size, 0, cmdpacket);
+
+  debugn  (5, ">>> MPIO\n");
+  hexdump (cmdpacket, sizeof(cmdpacket));
+
+  nwrite = mpio_io_bulk_write(m->fd, cmdpacket, 0x40);
+
+  if (nwrite != CMD_SIZE) 
+    {
+      debug ("Failed to send command.\n\n");
+      close (m->fd);
+      return 0;
+    }
+
+/*  Receive packet from MPIO  */
+  nread = mpio_io_bulk_read (m->fd, status, CMD_SIZE);
+
+  if ((nread == -1) || (nread != CMD_SIZE)) 
+    {
+      debug ("Failed to read Sector.\n%x\n",nread);
+      close (m->fd);
+      return 0;
+    }
+
+  debugn(5, "<<< MPIO\n");
+  hexdump(status, CMD_SIZE);
+
+  if (status[0] != 0xc0) 
+    {
+      debugn (2,"error formatting Block %02x:%06x\n", 
+	     chip, address);
+      if (chip == MPIO_EXTERNAL_MEM) 
+	{
+	  sm = &m->external;
+	  mpio_zone_block_set_defect_phys(m, chip, address);
+	}      
+    }
+  
+  return CMD_SIZE;
+}
+
+int  
+mpio_io_block_write(mpio_t *m, mpio_mem_t mem, mpio_fatentry_t *f, BYTE *data)
+{
+  mpio_smartmedia_t *sm;
+  int nwrite;
+  int i;
+  DWORD block_address, ba;
+  BYTE cmdpacket[CMD_SIZE], sendbuff[BLOCK_TRANS];
+  BYTE  chip=0;
+  DWORD address;
+
+  if (mem == MPIO_INTERNAL_MEM) 
+    {
+      sm = &m->internal;
+      fatentry2hw(f, &chip, &address);
+    }
+	
+  if (mem == MPIO_EXTERNAL_MEM) 
+    {
+      sm = &m->external;
+      /* find free physical block */
+      chip = MPIO_EXTERNAL_MEM;
+      address = mpio_zone_block_find_free_log(m, mem, f->entry);
+    }
+
+  /* build block for transfer to MPIO */
+  for (i = 0; i < BLOCK_SECTORS; i++) 
+    {
+      memcpy(sendbuff + (i * SECTOR_TRANS), 
+	     data + (i * SECTOR_SIZE),	   
+	     SECTOR_SIZE);
+      memset(sendbuff + (i * SECTOR_TRANS) + SECTOR_SIZE,
+	     0xff, CMD_SIZE);
+
+      if (mem == MPIO_INTERNAL_MEM) 
+	{	  
+	  if (i == 0)
+	    {	      
+	      memcpy((sendbuff+SECTOR_SIZE+(i * SECTOR_TRANS)), 
+		     f->i_fat, 0x10);
+/* 	      debug("address %02x:%06x\n", chip, address); */
+/* 	      hexdumpn(0, f->i_fat, 0x10); */
+	    }	  
+	}      
+
+      /* fill in block information */
+      if (mem == MPIO_EXTERNAL_MEM) 
+	{      
+	  block_address = mpio_zone_block_get_logical(m, mem, address);
+	  block_address = blockaddress_encode(block_address);
+
+	  ba = (block_address / 0x100) & 0xff;
+	  sendbuff[(i * SECTOR_TRANS) + SECTOR_SIZE + 0x06] = ba;
+	  sendbuff[(i * SECTOR_TRANS) + SECTOR_SIZE + 0x0b] = ba;
+	  
+	  ba = block_address & 0xff;
+	  sendbuff[(i * SECTOR_TRANS) + SECTOR_SIZE + 0x07] = ba;
+	  sendbuff[(i * SECTOR_TRANS) + SECTOR_SIZE + 0x0c] = ba;
+	  
+	  /* generate ECC Area information */
+	  mpio_ecc_256_gen ((sendbuff + (i * SECTOR_TRANS)),                   
+			    ((sendbuff + (i * SECTOR_TRANS) 
+			      + SECTOR_SIZE + 13)));
+	  mpio_ecc_256_gen ((sendbuff + (i * SECTOR_TRANS) 
+			      + (SECTOR_SIZE / 2)), 
+			    ((sendbuff + (i * SECTOR_TRANS) 
+			      + SECTOR_SIZE + 8)));
+	}
+  }
+
+  mpio_io_set_cmdpacket(m, PUT_BLOCK, chip, address, sm->size, 0x48 , cmdpacket);
+
+  debugn(5, "\n>>> MPIO\n");
+  hexdump(cmdpacket, sizeof(cmdpacket));
+    
+  nwrite = mpio_io_bulk_write(m->fd, cmdpacket, CMD_SIZE);
+
+  if(nwrite != CMD_SIZE) 
+    {
+      debug ("\nFailed to send command.\n\n");
+      close (m->fd);
+      return 1;
+    }
+
+  /*  send packet to MPIO   */
+  debugn(5, "\n<<< MPIO\n");
+  hexdump(sendbuff, BLOCK_TRANS);
+  nwrite = mpio_io_bulk_write (m->fd, sendbuff, BLOCK_TRANS);
+
+  if(nwrite != BLOCK_TRANS) 
+    {
+      debug ("\nFailed to read Block.\n%x\n",nwrite);
+      close (m->fd);
+      return 1;
+    }
+
+  return 0;
+}