/*
- * YAFFS: Yet another FFS. A NAND-flash specific file system.
- * yaffs_mtdif.c NAND mtd wrapper functions.
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002 Aleph One Ltd.
+ * Copyright (C) 2002-2007 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.
- *
*/
-const char *yaffs_mtdif_c_version = "$Id: yaffs_mtdif.c,v 1.9 2005-08-02 19:18:44 luc Exp $";
-
+const char *yaffs_mtdif_c_version =
+ "$Id: yaffs_mtdif.c,v 1.25 2010-02-19 01:06:31 charles Exp $";
+
#include "yportenv.h"
-#ifdef CONFIG_YAFFS_YAFFS1
#include "yaffs_mtdif.h"
#include "linux/time.h"
#include "linux/mtd/nand.h"
-static struct nand_oobinfo yaffs_oobinfo = {
- .useecc = 1,
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,8))
- .eccbytes = 6,
-#endif
- .eccpos = {8, 9, 10, 13, 14, 15}
-};
-
-static struct nand_oobinfo yaffs_noeccinfo = {
- .useecc = 0,
-};
-
-
-int nandmtd_WriteChunkToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, const yaffs_Spare *spare)
-{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
- size_t dummy;
- int retval = 0;
-
- loff_t addr = ((loff_t)chunkInNAND) * dev->nBytesPerChunk;
-
- __u8 *spareAsBytes = (__u8 *)spare;
-
- if(data && spare)
- {
- if(dev->useNANDECC)
- retval = mtd->write_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_oobinfo);
- else
- retval = mtd->write_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_noeccinfo);
- }
- else
- {
- if(data)
- retval = mtd->write(mtd,addr,dev->nBytesPerChunk,&dummy,data);
- if(spare)
- retval = mtd->write_oob(mtd,addr,YAFFS_BYTES_PER_SPARE,&dummy,spareAsBytes);
- }
-
- 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) * dev->nBytesPerChunk;
-
- __u8 *spareAsBytes = (__u8 *)spare;
-
- 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
- {
- if(data)
- retval = mtd->read(mtd,addr,dev->nBytesPerChunk,&dummy,data);
- if(spare)
- retval = mtd->read_oob(mtd,addr,YAFFS_BYTES_PER_SPARE,&dummy,spareAsBytes);
- }
-
- if (retval == 0)
- return YAFFS_OK;
- else
- return YAFFS_FAIL;
-}
-
-// Callback not needed for NAND
-#if 0
-static void nandmtd_EraseCallback(struct erase_info *ei)
-{
- yaffs_Device *dev = (yaffs_Device *)ei->priv;
- up(&dev->sem);
-}
-#endif
-
+#include "yaffs_linux.h"
int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber)
{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
- __u32 addr = ((loff_t) blockNumber) * dev->nBytesPerChunk * dev->nChunksPerBlock;
+ struct mtd_info *mtd = yaffs_DeviceToContext(dev)->mtd;
+ __u32 addr =
+ ((loff_t) blockNumber) * dev->param.totalBytesPerChunk
+ * dev->param.nChunksPerBlock;
struct erase_info ei;
- int retval = 0;
+ int retval = 0;
+
ei.mtd = mtd;
ei.addr = addr;
- ei.len = dev->nBytesPerChunk * dev->nChunksPerBlock;
+ ei.len = dev->param.totalBytesPerChunk * dev->param.nChunksPerBlock;
ei.time = 1000;
ei.retries = 2;
ei.callback = NULL;
- ei.priv = (u_long)dev;
-
- // Todo finish off the ei if required
-
- sema_init(&dev->sem,0);
+ ei.priv = (u_long) dev;
- retval = mtd->erase(mtd,&ei);
-
- //No need for callback
- // down(&dev->sem); // Wait for the erasure to complete
+ retval = mtd->erase(mtd, &ei);
- if (retval == 0)
- return YAFFS_OK;
- else
- return YAFFS_FAIL;
+ if (retval == 0)
+ return YAFFS_OK;
+ else
+ return YAFFS_FAIL;
}
int nandmtd_InitialiseNAND(yaffs_Device *dev)
return YAFFS_OK;
}
-#endif // CONFIG_YAFFS_YAFFS1
-