- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
-#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
- struct mtd_oob_ops ops;
-#endif
- size_t dummy;
- int retval = 0;
-
- loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
-#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
- __u8 spareAsBytes[8]; /* OOB */
-
- if (data && !spare)
- retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk,
- &dummy, data);
- else if (spare) {
- if (dev->useNANDECC) {
- translate_spare2oob(spare, spareAsBytes);
- ops.mode = MTD_OOB_AUTO;
- ops.ooblen = 8; /* temp hack */
- } else {
- ops.mode = MTD_OOB_RAW;
- ops.ooblen = YAFFS_BYTES_PER_SPARE;
- }
- ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen;
- ops.datbuf = (u8 *)data;
- ops.ooboffs = 0;
- ops.oobbuf = spareAsBytes;
- retval = mtd->write_oob(mtd, addr, &ops);
- }
-#else
- __u8 *spareAsBytes = (__u8 *) spare;
-
- if (data && spare) {
- if (dev->useNANDECC)
- retval =
- mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
- &dummy, data, spareAsBytes,
- &yaffs_oobinfo);
- else
- retval =
- mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
- &dummy, data, spareAsBytes,
- &yaffs_noeccinfo);
- } else {
- if (data)
- retval =
- mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy,
- data);
- if (spare)
- retval =
- mtd->write_oob(mtd, addr, YAFFS_BYTES_PER_SPARE,
- &dummy, spareAsBytes);
- }
-#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);
-#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
- struct mtd_oob_ops ops;
-#endif
- size_t dummy;
- int retval = 0;
-
- loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
-#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
- __u8 spareAsBytes[8]; /* OOB */
-
- if (data && !spare)
- retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk,
- &dummy, data);
- else if (spare) {
- if (dev->useNANDECC) {
- ops.mode = MTD_OOB_AUTO;
- ops.ooblen = 8; /* temp hack */
- } else {
- ops.mode = MTD_OOB_RAW;
- ops.ooblen = YAFFS_BYTES_PER_SPARE;
- }
- ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen;
- ops.datbuf = data;
- ops.ooboffs = 0;
- ops.oobbuf = spareAsBytes;
- retval = mtd->read_oob(mtd, addr, &ops);
- if (dev->useNANDECC)
- translate_oob2spare(spare, spareAsBytes);
- }
-#else
- __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->nDataBytesPerChunk,
- &dummy, data, spareAsBytes,
- &yaffs_oobinfo);
- } else {
- retval =
- mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
- &dummy, data, spareAsBytes,
- &yaffs_noeccinfo);
- }
- } else {
- if (data)
- retval =
- mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy,
- data);
- if (spare)
- retval =
- mtd->read_oob(mtd, addr, YAFFS_BYTES_PER_SPARE,
- &dummy, spareAsBytes);
- }
-#endif
-
- if (retval == 0)
- return YAFFS_OK;
- else
- return YAFFS_FAIL;
-}
-
-int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber)
-{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
- __u32 addr =
- ((loff_t) blockNumber) * dev->nDataBytesPerChunk
- * dev->nChunksPerBlock;