X-Git-Url: http://www.aleph1.co.uk/gitweb/?a=blobdiff_plain;f=yaffs_mtdif.c;h=a7b6aaedc3379d8a26271a02ccac91da91a52c24;hb=37122d7644239983d55096a85bca6fb8e248cf20;hp=7f74b6f79598b78ec9e9cc1172bb3f4b9d6c56c4;hpb=daffb0c61b90abbfc5fd8c335c5b79b0feeff2ab;p=yaffs%2F.git

diff --git a/yaffs_mtdif.c b/yaffs_mtdif.c
index 7f74b6f..a7b6aae 100644
--- a/yaffs_mtdif.c
+++ b/yaffs_mtdif.c
@@ -12,6 +12,9 @@
  * published by the Free Software Foundation.
  *
  */
+
+const char *yaffs_mtdif_c_version = "$Id: yaffs_mtdif.c,v 1.8 2003-03-11 05:16:53 charles Exp $";
+
 #ifdef CONFIG_YAFFS_MTD_ENABLED
  
 #include "yportenv.h"
@@ -20,42 +23,95 @@
 
 #include "linux/mtd/mtd.h"
 #include "linux/types.h"
+#include "linux/time.h"
+
+#ifndef	CONFIG_YAFFS_USE_OLD_MTD
+#include "linux/mtd/nand.h"
+#endif
+
+struct nand_oobinfo yaffs_oobinfo = {
+	useecc: 1,
+	eccpos: {8, 9, 10, 13, 14, 15}
+};
+
+struct nand_oobinfo yaffs_noeccinfo = {
+	useecc: 0,
+};
 
 
 int nandmtd_WriteChunkToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, yaffs_Spare *spare)
 {
 	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
 	size_t dummy;
+    int retval = 0;
 	
-	loff_t addr = ((loff_t)chunkInNAND) * YAFFS_BYTES_PER_CHUNK;
-	
+	loff_t addr = ((loff_t)chunkInNAND) * dev->nBytesPerChunk;
 	
 	__u8 *spareAsBytes = (__u8 *)spare;
-	
+
+#ifndef	CONFIG_YAFFS_USE_OLD_MTD
+	if(data && spare)
+	{
+		if(dev->useNANDECC)
+			mtd->write_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_oobinfo);
+		else
+			mtd->write_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_noeccinfo);
+	}
+	else
+	{
+#endif
 	if(data)
-		mtd->write(mtd,addr,YAFFS_BYTES_PER_CHUNK,&dummy,data);
+		retval = mtd->write(mtd,addr,dev->nBytesPerChunk,&dummy,data);
 	if(spare)
-		mtd->write_oob(mtd,addr,YAFFS_BYTES_PER_SPARE,&dummy,spareAsBytes);
-
-	return YAFFS_OK;
+		retval = mtd->write_oob(mtd,addr,YAFFS_BYTES_PER_SPARE,&dummy,spareAsBytes);
+#ifndef	CONFIG_YAFFS_USE_OLD_MTD
+	}
+#endif
+
+    if (retval == 0)
+    	return YAFFS_OK;
+    else
+        return YAFFS_FAIL;
 }
 
-
 int nandmtd_ReadChunkFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_Spare *spare)
 {
 	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
 	size_t dummy;
+    int retval = 0;
 	
-	loff_t addr = ((loff_t)chunkInNAND) * YAFFS_BYTES_PER_CHUNK;
+	loff_t addr = ((loff_t)chunkInNAND) * dev->nBytesPerChunk;
 	
 	__u8 *spareAsBytes = (__u8 *)spare;
 	
+#ifndef	CONFIG_YAFFS_USE_OLD_MTD
+	if(data && spare)
+	{
+		if(dev->useNANDECC)
+		{   // Careful, this call adds 2 ints to the end of the spare data.  Calling function should
+            // allocate enough memory for spare, i.e. [YAFFS_BYTES_PER_SPARE+2*sizeof(int)].
+    		retval = mtd->read_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_oobinfo);            
+		}
+		else
+		{
+			retval = mtd->read_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_noeccinfo);
+		}
+	}
+	else
+	{
+#endif
 	if(data)
-		mtd->read(mtd,addr,YAFFS_BYTES_PER_CHUNK,&dummy,data);
+		retval = mtd->read(mtd,addr,dev->nBytesPerChunk,&dummy,data);
 	if(spare)
-		mtd->read_oob(mtd,addr,YAFFS_BYTES_PER_SPARE,&dummy,spareAsBytes);
-
-	return YAFFS_OK;
+		retval = mtd->read_oob(mtd,addr,YAFFS_BYTES_PER_SPARE,&dummy,spareAsBytes);
+#ifndef	CONFIG_YAFFS_USE_OLD_MTD
+	}
+#endif
+
+    if (retval == 0)
+    	return YAFFS_OK;
+    else
+        return YAFFS_FAIL;
 }
 
 
@@ -68,14 +124,14 @@ static void nandmtd_EraseCallback(struct erase_info *ei)
 
 int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber)
 {
-	
 	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
-	__u32 addr = ((loff_t) blockNumber) * YAFFS_BYTES_PER_BLOCK;
+	__u32 addr = ((loff_t) blockNumber) * dev->nBytesPerChunk * dev->nChunksPerBlock;
 	struct erase_info ei;
+    int retval = 0;
 	
 	ei.mtd = mtd;
 	ei.addr = addr;
-	ei.len = YAFFS_BYTES_PER_BLOCK;
+	ei.len = dev->nBytesPerChunk * dev->nChunksPerBlock;
 	ei.time = 1000;
 	ei.retries = 2;
 	ei.callback = nandmtd_EraseCallback;
@@ -85,14 +141,14 @@ int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber)
 	
 	sema_init(&dev->sem,0);
 
-	mtd->erase(mtd,&ei);
-	
+	retval = mtd->erase(mtd,&ei);	
 	
 	down(&dev->sem); // Wait for the erasure to complete
-			
-	//Todo, check result of erasure
-	
-	return YAFFS_OK;
+
+    if (retval == 0)	
+    	return YAFFS_OK;
+    else
+        return YAFFS_FAIL;
 }
 
 int nandmtd_InitialiseNAND(yaffs_Device *dev)