X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=yaffs_mtd1f2_single.c;fp=yaffs_mtd1f2_single.c;h=0000000000000000000000000000000000000000;hp=d798a1f9c23fe1beab897a27ed2f5a7e1f3ab2df;hb=9131fecc79ad4e5fbdb775cdc067bc80aae5adb8;hpb=976dbeae825b18e6759f3903073a6784248cc244 diff --git a/yaffs_mtd1f2_single.c b/yaffs_mtd1f2_single.c deleted file mode 100644 index d798a1f..0000000 --- a/yaffs_mtd1f2_single.c +++ /dev/null @@ -1,219 +0,0 @@ -/* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * - * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning - * - * 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. - */ - -/* mtd interface for YAFFS2 */ - -#include "yportenv.h" -#include "yaffs_trace.h" - -#include "yaffs_mtdif2.h" - -#include "linux/mtd/mtd.h" -#include "linux/types.h" -#include "linux/time.h" - -#include "yaffs_packedtags2.h" - -#include "yaffs_linux.h" - -/* NB For use with inband tags.... - * We assume that the data buffer is of size total_bytes_per_chunk so that we can also - * use it to load the tags. - */ -int nandmtd2_write_chunk_tags(struct yaffs_dev *dev, int nand_chunk, - const u8 *data, - const struct yaffs_ext_tags *tags) -{ - struct mtd_info *mtd = struct yaffs_devo_mtd(dev); - struct mtd_oob_ops ops; - int retval = 0; - - loff_t addr; - - yaffs_packed_tags2 pt; - - int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt); - void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t : (void *)&pt; - - T(YAFFS_TRACE_MTD, - (TSTR - ("nandmtd2_write_chunk_tags chunk %d data %p tags %p" - TENDSTR), nand_chunk, data, tags)); - - - addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk; - - /* For yaffs2 writing there must be both data and tags. - * If we're using inband tags, then the tags are stuffed into - * the end of the data buffer. - */ - if (!data || !tags) - BUG(); - else if (dev->param.inband_tags) { - yaffs_packed_tags2_tags_only *pt2tp; - pt2tp = (yaffs_packed_tags2_tags_only *)(data + dev->data_bytes_per_chunk); - yaffs_pack_tags2_tags_only(pt2tp, tags); - } else - yaffs_pack_tags2(&pt, tags, !dev->param.no_tags_ecc); - - ops.mode = MTD_OOB_AUTO; - ops.ooblen = (dev->param.inband_tags) ? 0 : packed_tags_size; - ops.len = dev->param.total_bytes_per_chunk; - ops.ooboffs = 0; - ops.datbuf = (u8 *)data; - ops.oobbuf = (dev->param.inband_tags) ? NULL : packed_tags_ptr; - retval = mtd->write_oob(mtd, addr, &ops); - - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; -} - -int nandmtd2_read_chunk_tags(struct yaffs_dev *dev, int nand_chunk, - u8 *data, struct yaffs_ext_tags *tags) -{ - struct mtd_info *mtd = struct yaffs_devo_mtd(dev); - struct mtd_oob_ops ops; - - size_t dummy; - int retval = 0; - int local_data = 0; - - loff_t addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk; - - yaffs_packed_tags2 pt; - - int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt); - void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t: (void *)&pt; - - T(YAFFS_TRACE_MTD, - (TSTR - ("nandmtd2_read_chunk_tags chunk %d data %p tags %p" - TENDSTR), nand_chunk, data, tags)); - - if (dev->param.inband_tags) { - - if (!data) { - local_data = 1; - data = yaffs_get_temp_buffer(dev, __LINE__); - } - - - } - - - if (dev->param.inband_tags || (data && !tags)) - retval = mtd->read(mtd, addr, dev->param.total_bytes_per_chunk, - &dummy, data); - else if (tags) { - ops.mode = MTD_OOB_AUTO; - ops.ooblen = packed_tags_size; - ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size; - ops.ooboffs = 0; - ops.datbuf = data; - ops.oobbuf = struct yaffs_devo_lc(dev)->spare_buffer; - retval = mtd->read_oob(mtd, addr, &ops); - } - - if (dev->param.inband_tags) { - if (tags) { - yaffs_packed_tags2_tags_only *pt2tp; - pt2tp = (yaffs_packed_tags2_tags_only *)&data[dev->data_bytes_per_chunk]; - yaffs_unpack_tags2_tags_only(tags, pt2tp); - } - } else { - if (tags) { - memcpy(packed_tags_ptr, struct yaffs_devo_lc(dev)->spare_buffer, packed_tags_size); - yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc); - } - } - - if (local_data) - yaffs_release_temp_buffer(dev, data, __LINE__); - - if (tags && retval == -EBADMSG && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) { - tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED; - dev->n_ecc_unfixed++; - } - if(tags && retval == -EUCLEAN && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) { - tags->ecc_result = YAFFS_ECC_RESULT_FIXED; - dev->n_ecc_fixed++; - } - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; -} - -int nandmtd2_mark_block_bad(struct yaffs_dev *dev, int block_no) -{ - struct mtd_info *mtd = struct yaffs_devo_mtd(dev); - int retval; - T(YAFFS_TRACE_MTD, - (TSTR("nandmtd2_mark_block_bad %d" TENDSTR), block_no)); - - retval = - mtd->block_markbad(mtd, - block_no * dev->param.chunks_per_block * - dev->param.total_bytes_per_chunk); - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; - -} - -int nandmtd2_query_block(struct yaffs_dev *dev, int block_no, - yaffs_block_state_t *state, u32 *seq_number) -{ - struct mtd_info *mtd = struct yaffs_devo_mtd(dev); - int retval; - - T(YAFFS_TRACE_MTD, - (TSTR("nandmtd2_query_block %d" TENDSTR), block_no)); - retval = - mtd->block_isbad(mtd, - block_no * dev->param.chunks_per_block * - dev->param.total_bytes_per_chunk); - - if (retval) { - T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR))); - - *state = YAFFS_BLOCK_STATE_DEAD; - *seq_number = 0; - } else { - struct yaffs_ext_tags t; - nandmtd2_read_chunk_tags(dev, block_no * - dev->param.chunks_per_block, NULL, - &t); - - if (t.chunk_used) { - *seq_number = t.seq_number; - *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; - } else { - *seq_number = 0; - *state = YAFFS_BLOCK_STATE_EMPTY; - } - } - T(YAFFS_TRACE_MTD, - (TSTR("block is bad seq %d state %d" TENDSTR), *seq_number, - *state)); - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; -}