*** empty log message ***

[yaffs2.git] / yaffs_guts.c

diff --git a/yaffs_guts.c b/yaffs_guts.c
index e87109bd353fc3943fd622cf4ba31cb2fd76e27d..2f899f3ec516e21eca987ce8e2e064404cf1701b 100644 (file)
--- a/yaffs_guts.c
+++ b/yaffs_guts.c
@@ -1,19 +1,20 @@
+
 /*
- * YAFFS: Yet another FFS. A NAND-flash specific file system.
- * yaffs_guts.c  The main guts of YAFFS
+ * YAFFS: Yet another FFS. A NAND-flash specific file system. 
  *
  * Copyright (C) 2002 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
  *
+ * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  *
  */
  //yaffs_guts.c
 
-const char *yaffs_guts_c_version="$Id: yaffs_guts.c,v 1.2 2004-11-16 02:36:15 charles Exp $";
+const char *yaffs_guts_c_version="$Id: yaffs_guts.c,v 1.4 2004-12-17 04:39:04 charles Exp $";
 
 #include "yportenv.h"
 
@@ -201,7 +202,7 @@ int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,int blockInNAND)
        return result;
 }
 
-int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev)
+static int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev)
 {
        return dev->initialiseNAND(dev);
 }
@@ -475,7 +476,8 @@ int yaffs_CheckFF(__u8 *buffer,int nBytes)
        //Horrible, slow implementation
        while(nBytes--)
        {
-               if(*buffer != 0xFF) return 0; 
+               if(*buffer != 0xFF) return 0;
+               buffer++;
        }
        return 1;
 }
@@ -4524,6 +4526,8 @@ static int yaffs_Scan(yaffs_Device *dev)
        __u8 *chunkData;
 
        yaffs_BlockIndex *blockIndex = NULL;
+
+       T(YAFFS_TRACE_SCAN,(TSTR("yaffs_Scan starts  startblk %d endblk %d..." TENDSTR),dev->startBlock,dev->endBlock));
        
        chunkData = yaffs_GetTempBuffer(dev,__LINE__);
        
@@ -4548,6 +4552,8 @@ static int yaffs_Scan(yaffs_Device *dev)
                
                bi->blockState = state;
                bi->sequenceNumber = sequenceNumber;
+
+               T(YAFFS_TRACE_SCAN_DEBUG,(TSTR("Block scanning block %d state %d seq %d" TENDSTR),blk,state,sequenceNumber));
                
                if(state == YAFFS_BLOCK_STATE_DEAD)
                {
@@ -4555,6 +4561,7 @@ static int yaffs_Scan(yaffs_Device *dev)
                }
                else if(state == YAFFS_BLOCK_STATE_EMPTY)
                {
+                       T(YAFFS_TRACE_SCAN_DEBUG,(TSTR("Block empty " TENDSTR)));
                        dev->nErasedBlocks++;
                        dev->nFreeChunks += dev->nChunksPerBlock;
                }
@@ -4610,6 +4617,7 @@ static int yaffs_Scan(yaffs_Device *dev)
        {
                startIterator = 0;
                endIterator = nBlocksToScan-1;
+               T(YAFFS_TRACE_SCAN_DEBUG,(TSTR("%d blocks to be scanned" TENDSTR),nBlocksToScan));
        }
        else
        {
@@ -4947,6 +4955,9 @@ static int yaffs_Scan(yaffs_Device *dev)
        }
        
        yaffs_ReleaseTempBuffer(dev,chunkData,__LINE__);
+
+       T(YAFFS_TRACE_SCAN,(TSTR("yaffs_Scan ends" TENDSTR)));
+
        return YAFFS_OK;
 }
 
@@ -5313,11 +5324,12 @@ int yaffs_GutsInitialise(yaffs_Device *dev)
        int extraBits;
        int nBlocks;
 
+       T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: yaffs_GutsInitialise()" TENDSTR)));
        // Check stuff that must be set
 
        if(!dev)
        {
-               T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: Need a device\n" TENDSTR)));
+               T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: Need a device" TENDSTR)));
                return YAFFS_FAIL;
        }
 
@@ -5332,10 +5344,16 @@ int yaffs_GutsInitialise(yaffs_Device *dev)
                dev->endBlock <= (dev->startBlock + dev->nReservedBlocks + 2) // otherwise it is too small
          )
        {
-               T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: nand geometry problems\n" TENDSTR)));
+               T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s " TENDSTR),
+                  dev->nBytesPerChunk, dev->isYaffs2 ? "2" : ""));
                return YAFFS_FAIL;
        }
 
+       if(yaffs_InitialiseNAND(dev) != YAFFS_OK)
+       {
+               T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: InitialiseNAND failed" TENDSTR)));
+               return YAFFS_FAIL;
+       }
 
        // Got the right mix of functions?
        //
@@ -5442,7 +5460,6 @@ int yaffs_GutsInitialise(yaffs_Device *dev)
        
 
        
-       
        yaffs_InitialiseBlocks(dev,nBlocks);
        
        yaffs_InitialiseTnodes(dev);
@@ -5502,7 +5519,7 @@ int yaffs_GutsInitialise(yaffs_Device *dev)
 
        dev->nRetiredBlocks = 0;
 
-       
+       T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR)));
        return YAFFS_OK;
                
 }
@@ -5686,4 +5703,3 @@ void yaffs_GutsTest(yaffs_Device *dev)
 #endif
 
 
-