Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / fs / yaffs2 / yaffs_nand.c

diff --git a/qemu/roms/u-boot/fs/yaffs2/yaffs_nand.c b/qemu/roms/u-boot/fs/yaffs2/yaffs_nand.c
new file mode 100644 (file)
index 0000000..165d010
--- /dev/null
+++ b/qemu/roms/u-boot/fs/yaffs2/yaffs_nand.c
@@ -0,0 +1,120 @@
+/*
+ * 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_nand.h"
+#include "yaffs_tagscompat.h"
+
+#include "yaffs_getblockinfo.h"
+#include "yaffs_summary.h"
+
+int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk,
+                            u8 *buffer, struct yaffs_ext_tags *tags)
+{
+       int result;
+       struct yaffs_ext_tags local_tags;
+       int flash_chunk = nand_chunk - dev->chunk_offset;
+
+       dev->n_page_reads++;
+
+       /* If there are no tags provided use local tags. */
+       if (!tags)
+               tags = &local_tags;
+
+       if (dev->param.read_chunk_tags_fn)
+               result =
+                   dev->param.read_chunk_tags_fn(dev, flash_chunk, buffer,
+                                                 tags);
+       else
+               result = yaffs_tags_compat_rd(dev,
+                                             flash_chunk, buffer, tags);
+       if (tags && tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
+
+               struct yaffs_block_info *bi;
+               bi = yaffs_get_block_info(dev,
+                                         nand_chunk /
+                                         dev->param.chunks_per_block);
+               yaffs_handle_chunk_error(dev, bi);
+       }
+       return result;
+}
+
+int yaffs_wr_chunk_tags_nand(struct yaffs_dev *dev,
+                               int nand_chunk,
+                               const u8 *buffer, struct yaffs_ext_tags *tags)
+{
+       int result;
+       int flash_chunk = nand_chunk - dev->chunk_offset;
+
+       dev->n_page_writes++;
+
+       if (tags) {
+               tags->seq_number = dev->seq_number;
+               tags->chunk_used = 1;
+               yaffs_trace(YAFFS_TRACE_WRITE,
+                       "Writing chunk %d tags %d %d",
+                       nand_chunk, tags->obj_id, tags->chunk_id);
+       } else {
+               yaffs_trace(YAFFS_TRACE_ERROR, "Writing with no tags");
+               BUG();
+               return YAFFS_FAIL;
+       }
+
+       if (dev->param.write_chunk_tags_fn)
+               result = dev->param.write_chunk_tags_fn(dev, flash_chunk,
+                                                       buffer, tags);
+       else
+               result = yaffs_tags_compat_wr(dev, flash_chunk, buffer, tags);
+
+       yaffs_summary_add(dev, tags, nand_chunk);
+
+       return result;
+}
+
+int yaffs_mark_bad(struct yaffs_dev *dev, int block_no)
+{
+       block_no -= dev->block_offset;
+       if (dev->param.bad_block_fn)
+               return dev->param.bad_block_fn(dev, block_no);
+
+       return yaffs_tags_compat_mark_bad(dev, block_no);
+}
+
+int yaffs_query_init_block_state(struct yaffs_dev *dev,
+                                int block_no,
+                                enum yaffs_block_state *state,
+                                u32 *seq_number)
+{
+       block_no -= dev->block_offset;
+       if (dev->param.query_block_fn)
+               return dev->param.query_block_fn(dev, block_no, state,
+                                                seq_number);
+
+       return yaffs_tags_compat_query_block(dev, block_no, state, seq_number);
+}
+
+int yaffs_erase_block(struct yaffs_dev *dev, int flash_block)
+{
+       int result;
+
+       flash_block -= dev->block_offset;
+       dev->n_erasures++;
+       result = dev->param.erase_fn(dev, flash_block);
+       return result;
+}
+
+int yaffs_init_nand(struct yaffs_dev *dev)
+{
+       if (dev->param.initialise_flash_fn)
+               return dev->param.initialise_flash_fn(dev);
+       return YAFFS_OK;
+}