mirror of https://github.com/OpenIPC/firmware.git
126 lines
3.1 KiB
Diff
126 lines
3.1 KiB
Diff
--- linux-4.9.37/fs/yaffs2/yaffs_nand.c 1970-01-01 03:00:00.000000000 +0300
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+++ linux-4.9.y/fs/yaffs2/yaffs_nand.c 2021-06-07 13:01:34.000000000 +0300
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@@ -0,0 +1,122 @@
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+/*
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+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
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+ *
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+ * Copyright (C) 2002-2011 Aleph One Ltd.
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+ * for Toby Churchill Ltd and Brightstar Engineering
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+ *
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+ * Created by Charles Manning <charles@aleph1.co.uk>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ */
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+
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+#include "yaffs_nand.h"
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+#include "yaffs_tagscompat.h"
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+
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+#include "yaffs_getblockinfo.h"
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+#include "yaffs_summary.h"
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+
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+static int apply_chunk_offset(struct yaffs_dev *dev, int chunk)
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+{
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+ return chunk - dev->chunk_offset;
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+}
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+
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+int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk,
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+ u8 *buffer, struct yaffs_ext_tags *tags)
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+{
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+ int result;
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+ struct yaffs_ext_tags local_tags;
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+ int flash_chunk = apply_chunk_offset(dev, nand_chunk);
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+
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+ dev->n_page_reads++;
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+
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+ /* If there are no tags provided use local tags. */
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+ if (!tags)
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+ tags = &local_tags;
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+
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+ result = dev->tagger.read_chunk_tags_fn(dev, flash_chunk, buffer, tags);
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+ if (tags && tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
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+
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+ struct yaffs_block_info *bi;
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+ bi = yaffs_get_block_info(dev,
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+ nand_chunk /
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+ dev->param.chunks_per_block);
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+ yaffs_handle_chunk_error(dev, bi);
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+ }
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+ return result;
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+}
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+
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+int yaffs_wr_chunk_tags_nand(struct yaffs_dev *dev,
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+ int nand_chunk,
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+ const u8 *buffer, struct yaffs_ext_tags *tags)
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+{
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+ int result;
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+ int flash_chunk = apply_chunk_offset(dev, nand_chunk);
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+
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+ dev->n_page_writes++;
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+
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+ if (!tags) {
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+ yaffs_trace(YAFFS_TRACE_ERROR, "Writing with no tags");
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+ BUG();
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+ return YAFFS_FAIL;
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+ }
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+
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+ tags->seq_number = dev->seq_number;
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+ tags->chunk_used = 1;
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+ yaffs_trace(YAFFS_TRACE_WRITE,
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+ "Writing chunk %d tags %d %d",
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+ nand_chunk, tags->obj_id, tags->chunk_id);
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+
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+ result = dev->tagger.write_chunk_tags_fn(dev, flash_chunk,
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+ buffer, tags);
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+
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+ yaffs_summary_add(dev, tags, nand_chunk);
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+
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+ return result;
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+}
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+
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+int yaffs_mark_bad(struct yaffs_dev *dev, int block_no)
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+{
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+ block_no -= dev->block_offset;
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+ dev->n_bad_markings++;
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+
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+ if (dev->param.disable_bad_block_marking)
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+ return YAFFS_OK;
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+
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+ return dev->tagger.mark_bad_fn(dev, block_no);
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+}
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+
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+
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+int yaffs_query_init_block_state(struct yaffs_dev *dev,
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+ int block_no,
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+ enum yaffs_block_state *state,
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+ u32 *seq_number)
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+{
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+ block_no -= dev->block_offset;
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+ return dev->tagger.query_block_fn(dev, block_no, state, seq_number);
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+}
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+
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+int yaffs_erase_block(struct yaffs_dev *dev, int block_no)
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+{
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+ int result;
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+
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+ block_no -= dev->block_offset;
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+ dev->n_erasures++;
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+ result = dev->drv.drv_erase_fn(dev, block_no);
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+ return result;
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+}
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+
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+int yaffs_init_nand(struct yaffs_dev *dev)
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+{
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+ if (dev->drv.drv_initialise_fn)
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+ return dev->drv.drv_initialise_fn(dev);
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+ return YAFFS_OK;
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+}
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+
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+int yaffs_deinit_nand(struct yaffs_dev *dev)
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+{
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+ if (dev->drv.drv_deinitialise_fn)
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+ return dev->drv.drv_deinitialise_fn(dev);
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+ return YAFFS_OK;
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+}
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