diff options
Diffstat (limited to 'target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c')
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c b/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c deleted file mode 100644 index 44a83b12ca..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * - * Copyright (C) 2002-2011 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. - */ - -#include "yaffs_guts.h" -#include "yaffs_trace.h" -#include "yaffs_packedtags2.h" - -static int yaffs_tags_marshall_write(struct yaffs_dev *dev, - int nand_chunk, const u8 *data, - const struct yaffs_ext_tags *tags) -{ - struct yaffs_packed_tags2 pt; - int retval; - - 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; - - yaffs_trace(YAFFS_TRACE_MTD, - "yaffs_tags_marshall_write chunk %d data %p tags %p", - nand_chunk, data, tags); - - /* 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) { - struct yaffs_packed_tags2_tags_only *pt2tp; - pt2tp = - (struct 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); - } - - retval = dev->drv.drv_write_chunk_fn(dev, nand_chunk, - data, dev->param.total_bytes_per_chunk, - (dev->param.inband_tags) ? NULL : packed_tags_ptr, - (dev->param.inband_tags) ? 0 : packed_tags_size); - - return retval; -} - -static int yaffs_tags_marshall_read(struct yaffs_dev *dev, - int nand_chunk, u8 *data, - struct yaffs_ext_tags *tags) -{ - int retval = 0; - int local_data = 0; - u8 spare_buffer[100]; - enum yaffs_ecc_result ecc_result; - - struct 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; - - yaffs_trace(YAFFS_TRACE_MTD, - "yaffs_tags_marshall_read chunk %d data %p tags %p", - nand_chunk, data, tags); - - if (dev->param.inband_tags) { - if (!data) { - local_data = 1; - data = yaffs_get_temp_buffer(dev); - } - } - - if (dev->param.inband_tags || (data && !tags)) - retval = dev->drv.drv_read_chunk_fn(dev, nand_chunk, - data, dev->param.total_bytes_per_chunk, - NULL, 0, - &ecc_result); - else if (tags) - retval = dev->drv.drv_read_chunk_fn(dev, nand_chunk, - data, dev->param.total_bytes_per_chunk, - spare_buffer, packed_tags_size, - &ecc_result); - else - BUG(); - - - if (dev->param.inband_tags) { - if (tags) { - struct yaffs_packed_tags2_tags_only *pt2tp; - pt2tp = - (struct 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, spare_buffer, packed_tags_size); - yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc); - } - - if (local_data) - yaffs_release_temp_buffer(dev, data); - - if (tags && ecc_result == YAFFS_ECC_RESULT_UNFIXED) { - tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED; - dev->n_ecc_unfixed++; - } - - if (tags && ecc_result == -YAFFS_ECC_RESULT_FIXED) { - if (tags->ecc_result <= YAFFS_ECC_RESULT_NO_ERROR) - tags->ecc_result = YAFFS_ECC_RESULT_FIXED; - dev->n_ecc_fixed++; - } - - if (ecc_result < YAFFS_ECC_RESULT_UNFIXED) - return YAFFS_OK; - else - return YAFFS_FAIL; -} - -static int yaffs_tags_marshall_query_block(struct yaffs_dev *dev, int block_no, - enum yaffs_block_state *state, - u32 *seq_number) -{ - int retval; - - yaffs_trace(YAFFS_TRACE_MTD, "yaffs_tags_marshall_query_block %d", - block_no); - - retval = dev->drv.drv_check_bad_fn(dev, block_no); - - if (retval== YAFFS_FAIL) { - yaffs_trace(YAFFS_TRACE_MTD, "block is bad"); - - *state = YAFFS_BLOCK_STATE_DEAD; - *seq_number = 0; - } else { - struct yaffs_ext_tags t; - - yaffs_tags_marshall_read(dev, - block_no * dev->param.chunks_per_block, - NULL, &t); - - if (t.chunk_used) { - *seq_number = t.seq_number; - *state = YAFFS_BLOCK_STATE_NEEDS_SCAN; - } else { - *seq_number = 0; - *state = YAFFS_BLOCK_STATE_EMPTY; - } - } - - yaffs_trace(YAFFS_TRACE_MTD, - "block query returns seq %d state %d", - *seq_number, *state); - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; -} - -static int yaffs_tags_marshall_mark_bad(struct yaffs_dev *dev, int block_no) -{ - return dev->drv.drv_mark_bad_fn(dev, block_no); - -} - - -void yaffs_tags_marshall_install(struct yaffs_dev *dev) -{ - if (!dev->param.is_yaffs2) - return; - - if (!dev->tagger.write_chunk_tags_fn) - dev->tagger.write_chunk_tags_fn = yaffs_tags_marshall_write; - - if (!dev->tagger.read_chunk_tags_fn) - dev->tagger.read_chunk_tags_fn = yaffs_tags_marshall_read; - - if (!dev->tagger.query_block_fn) - dev->tagger.query_block_fn = yaffs_tags_marshall_query_block; - - if (!dev->tagger.mark_bad_fn) - dev->tagger.mark_bad_fn = yaffs_tags_marshall_mark_bad; - -} |