-/*\r
- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.\r
- *\r
- * Copyright (C) 2002-2010 Aleph One Ltd.\r
- * for Toby Churchill Ltd and Brightstar Engineering\r
- *\r
- * Created by Charles Manning <charles@aleph1.co.uk>\r
- *\r
- * This program is free software; you can redistribute it and/or modify\r
- * it under the terms of the GNU General Public License version 2 as\r
- * published by the Free Software Foundation.\r
- */\r
-\r
-\r
-\r
-\r
-#include "yportenv.h"\r
-#include "yaffs_guts.h"\r
-#include "devextras.h"\r
-\r
-\r
-#include "yaffs_nandif.h"\r
-#include "yaffs_packedtags2.h"\r
-\r
-\r
-#if 0\r
-\r
-\r
-static unsigned char *DevBufferIn(yaffs_Device *dev)\r
-{\r
- yfsd_WinCEDevice *cedev = (yfsd_WinCEDevice *)(dev->genericDevice);\r
- return cedev->bufferIn;\r
-}\r
-static unsigned char *DevBufferOut(yaffs_Device *dev)\r
-{\r
- yfsd_WinCEDevice *cedev = (yfsd_WinCEDevice *)(dev->genericDevice);\r
- return cedev->bufferOut;\r
-}\r
-\r
-static unsigned DevBufferSize(yaffs_Device *dev)\r
-{\r
- yfsd_WinCEDevice *cedev = (yfsd_WinCEDevice *)(dev->genericDevice);\r
- return cedev->bufferSize;\r
-}\r
-\r
-#endif\r
-\r
-/* NB For use with inband tags....\r
- * We assume that the data buffer is of size totalBytersPerChunk so that we can also\r
- * use it to load the tags.\r
- */\r
-int ynandif_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,\r
- const __u8 * data,\r
- const yaffs_ExtendedTags * tags)\r
-{\r
-\r
- int retval = 0;\r
- yaffs_PackedTags2 pt;\r
- void *spare;\r
- unsigned spareSize = 0;\r
-\r
- unsigned char *bufferIn = DevBufferIn(dev);\r
- unsigned char *bufferOut = DevBufferOut(dev);\r
- unsigned bufferSize = DevBufferSize(dev);\r
-\r
- T(YAFFS_TRACE_MTD,\r
- (TSTR\r
- ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p"\r
- TENDSTR), chunkInNAND, data, tags));\r
- \r
-\r
- /* For yaffs2 writing there must be both data and tags.\r
- * If we're using inband tags, then the tags are stuffed into\r
- * the end of the data buffer.\r
- */\r
-\r
- if(dev->inbandTags){\r
- yaffs_PackedTags2TagsPart *pt2tp;\r
- pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->nDataBytesPerChunk);\r
- yaffs_PackTags2TagsPart(pt2tp,tags);\r
- spare = NULL;\r
- spareSize = 0;\r
- }\r
- else{\r
- yaffs_PackTags2(&pt, tags);\r
- spare = &pt;\r
- spareSize = sizeof(yaffs_PackedTags2);\r
- }\r
- \r
- yramsim_WritePage(chunkInNAND,\r
- data, dev->totalBytesPerChunk, spare, spareSize);\r
-\r
- return YAFFS_OK;\r
-}\r
-\r
-int ynandif_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,\r
- __u8 * data, yaffs_ExtendedTags * tags)\r
-{\r
- yaffs_PackedTags2 pt;\r
- int localData = 0;\r
- void *spare = NULL;\r
- unsigned spareSize;\r
- int eccStatus; //0 = ok, 1 = fixed, -1 = unfixed\r
-\r
- unsigned char *bufferIn = DevBufferIn(dev);\r
- unsigned char *bufferOut = DevBufferOut(dev);\r
- unsigned bufferSize = DevBufferSize(dev);\r
-\r
- T(YAFFS_TRACE_MTD,\r
- (TSTR\r
- ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p"\r
- TENDSTR), chunkInNAND, data, tags));\r
- \r
- if(!tags){\r
- spare = NULL;\r
- spareSize = 0;\r
- }else if(dev->inbandTags){\r
- \r
- if(!data) {\r
- localData = 1;\r
- data = yaffs_GetTempBuffer(dev,__LINE__);\r
- }\r
- spare = NULL;\r
- spareSize = 0;\r
- }\r
- else {\r
- spare = &pt;\r
- spareSize = sizeof(yaffs_PackedTags2);\r
- }\r
-\r
- yramsim_ReadPage(chunkInNAND,\r
- data,data ? dev->totalBytesPerChunk : 0,\r
- spare,spareSize,\r
- &eccStatus);\r
-\r
-\r
-\r
- if(dev->inbandTags){\r
- if(tags){\r
- yaffs_PackedTags2TagsPart * pt2tp;\r
- pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->nDataBytesPerChunk]; \r
- yaffs_UnpackTags2TagsPart(tags,pt2tp);\r
- }\r
- }\r
- else {\r
- if (tags){\r
- yaffs_UnpackTags2(tags, &pt);\r
- }\r
- }\r
-\r
- if(tags && tags->chunkUsed){\r
- if(eccStatus == 0)\r
- tags->eccResult = YAFFS_ECC_RESULT_NO_ERROR;\r
- else if(eccStatus < 0)\r
- tags->eccResult = YAFFS_ECC_RESULT_UNFIXED;\r
- else\r
- tags->eccResult = YAFFS_ECC_RESULT_FIXED;\r
- }\r
-\r
- if(localData)\r
- yaffs_ReleaseTempBuffer(dev,data,__LINE__);\r
- \r
- return YAFFS_OK;\r
-}\r
-\r
-int ynandif_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockId)\r
-{\r
-\r
- yramsim_MarkBlockBad(blockId);\r
-\r
- return YAFFS_OK;\r
-}\r
-\r
-int ynandif_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, int blockId)\r
-{\r
-\r
- yramsim_EraseBlock(blockId);\r
-\r
- return YAFFS_OK;\r
-}\r
-\r
-\r
-static int ynandif_IsBlockOk(struct yaffs_DeviceStruct *dev, int blockId)\r
-{\r
- return yramsim_CheckBlockOk(blockId);\r
-}\r
-\r
-int ynandif_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockId, yaffs_BlockState *state, __u32 *sequenceNumber)\r
-{\r
- unsigned chunkNo;\r
- yaffs_ExtendedTags tags;\r
-\r
- *sequenceNumber = 0;\r
- \r
- chunkNo = blockId * dev->nChunksPerBlock;\r
- \r
- if(!ynandif_IsBlockOk(dev,blockId)){\r
- *state = YAFFS_BLOCK_STATE_DEAD;\r
- } \r
- else \r
- {\r
- ynandif_ReadChunkWithTagsFromNAND(dev,chunkNo,NULL,&tags);\r
-\r
- if(!tags.chunkUsed)\r
- {\r
- *state = YAFFS_BLOCK_STATE_EMPTY;\r
- }\r
- else \r
- {\r
- *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;\r
- *sequenceNumber = tags.sequenceNumber;\r
- }\r
- }\r
-\r
- return YAFFS_OK;\r
-}\r
-\r
-\r
-int ynandif_GetGeometry(yaffs_Device *dev, ynandif_Geometry *geometry)\r
-{\r
-\r
- yramsim_Geometry g;\r
-\r
- yramsim_GetGeometry(&g);\r
- geometry->startBlock = g.startBlock;\r
- geometry->endBlock = g.endBlock;\r
- geometry->dataSize = g.dataSize;\r
- geometry->spareSize = g.spareSize;\r
- geometry->pagesPerBlock = g.pagesPerBlock;\r
- geometry->hasECC = g.hasECC;\r
- geometry->inbandTags = g.inbandTags;\r
- geometry->useYaffs2 = g.useYaffs2;\r
-\r
- return YAFFS_OK;\r
-\r
-}\r
-\r
-int ynandif_InitialiseNAND(yaffs_Device *dev)\r
-{\r
-\r
- yramsim_Initialise();\r
-\r
- return YAFFS_OK;\r
-}\r
+/*
+ * 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 <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 "yportenv.h"
+#include "yaffs_guts.h"
+
+
+#include "yaffs_nandif.h"
+#include "yaffs_packedtags2.h"
+
+#include "yramsim.h"
+
+#include "yaffs_trace.h"
+#include "yaffsfs.h"
+
+
+/* NB For use with inband tags....
+ * We assume that the data buffer is of size totalBytersPerChunk so that we can also
+ * use it to load the tags.
+ */
+int ynandif_WriteChunkWithTagsToNAND(struct yaffs_dev * dev, int nand_chunk,
+ const u8 * data,
+ const struct yaffs_ext_tags * tags)
+{
+
+ int retval = 0;
+ struct yaffs_packed_tags2 pt;
+ void *spare;
+ unsigned spareSize = 0;
+ ynandif_Geometry *geometry = (ynandif_Geometry *)(dev->driver_context);
+
+ T(YAFFS_TRACE_MTD,
+ (TSTR
+ ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p"
+ TENDSTR), 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(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);
+ spare = NULL;
+ spareSize = 0;
+ }
+ else{
+ yaffs_pack_tags2(&pt, tags,!dev->param.no_tags_ecc);
+ spare = &pt;
+ spareSize = sizeof(struct yaffs_packed_tags2);
+ }
+
+ retval = geometry->writeChunk(dev,nand_chunk,
+ data, dev->param.total_bytes_per_chunk, spare, spareSize);
+
+ return retval;
+}
+
+int ynandif_ReadChunkWithTagsFromNAND(struct yaffs_dev * dev, int nand_chunk,
+ u8 * data, struct yaffs_ext_tags * tags)
+{
+ struct yaffs_packed_tags2 pt;
+ int localData = 0;
+ void *spare = NULL;
+ unsigned spareSize;
+ int retval = 0;
+ int eccStatus; //0 = ok, 1 = fixed, -1 = unfixed
+ ynandif_Geometry *geometry = (ynandif_Geometry *)(dev->driver_context);
+
+ T(YAFFS_TRACE_MTD,
+ (TSTR
+ ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p"
+ TENDSTR), nand_chunk, data, tags));
+
+ if(!tags){
+ spare = NULL;
+ spareSize = 0;
+ }else if(dev->param.inband_tags){
+
+ if(!data) {
+ localData = 1;
+ data = yaffs_get_temp_buffer(dev,__LINE__);
+ }
+ spare = NULL;
+ spareSize = 0;
+ }
+ else {
+ spare = &pt;
+ spareSize = sizeof(struct yaffs_packed_tags2);
+ }
+
+ retval = geometry->readChunk(dev,nand_chunk,
+ data,
+ data ? dev->param.total_bytes_per_chunk : 0,
+ spare,spareSize,
+ &eccStatus);
+
+ 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){
+ yaffs_unpack_tags2(tags, &pt,!dev->param.no_tags_ecc);
+ }
+ }
+
+ if(tags && tags->chunk_used){
+ if(eccStatus < 0 ||
+ tags->ecc_result == YAFFS_ECC_RESULT_UNFIXED)
+ tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED;
+ else if(eccStatus > 0 ||
+ tags->ecc_result == YAFFS_ECC_RESULT_FIXED)
+ tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
+ else
+ tags->ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+ }
+
+ if(localData)
+ yaffs_release_temp_buffer(dev,data,__LINE__);
+
+ return retval;
+}
+
+int ynandif_MarkNANDBlockBad(struct yaffs_dev *dev, int blockId)
+{
+ ynandif_Geometry *geometry = (ynandif_Geometry *)(dev->driver_context);
+
+ return geometry->markBlockBad(dev,blockId);
+}
+
+int ynandif_EraseBlockInNAND(struct yaffs_dev *dev, int blockId)
+{
+ ynandif_Geometry *geometry = (ynandif_Geometry *)(dev->driver_context);
+
+ return geometry->eraseBlock(dev,blockId);
+
+}
+
+
+static int ynandif_IsBlockOk(struct yaffs_dev *dev, int blockId)
+{
+ ynandif_Geometry *geometry = (ynandif_Geometry *)(dev->driver_context);
+
+ return geometry->checkBlockOk(dev,blockId);
+}
+
+int ynandif_QueryNANDBlock(struct yaffs_dev *dev, int blockId, enum yaffs_block_state *state, u32 *seq_number)
+{
+ unsigned chunkNo;
+ struct yaffs_ext_tags tags;
+
+ *seq_number = 0;
+
+ chunkNo = blockId * dev->param.chunks_per_block;
+
+ if(!ynandif_IsBlockOk(dev,blockId)){
+ *state = YAFFS_BLOCK_STATE_DEAD;
+ }
+ else
+ {
+ ynandif_ReadChunkWithTagsFromNAND(dev,chunkNo,NULL,&tags);
+
+ if(!tags.chunk_used)
+ {
+ *state = YAFFS_BLOCK_STATE_EMPTY;
+ }
+ else
+ {
+ *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
+ *seq_number = tags.seq_number;
+ }
+ }
+
+ return YAFFS_OK;
+}
+
+
+int ynandif_InitialiseNAND(struct yaffs_dev *dev)
+{
+ ynandif_Geometry *geometry = (ynandif_Geometry *)(dev->driver_context);
+
+ geometry->initialise(dev);
+
+ return YAFFS_OK;
+}
+
+int ynandif_Deinitialise_flash_fn(struct yaffs_dev *dev)
+{
+ ynandif_Geometry *geometry = (ynandif_Geometry *)(dev->driver_context);
+
+ geometry->deinitialise(dev);
+
+ return YAFFS_OK;
+}
+
+
+struct yaffs_dev *
+ yaffs_add_dev_from_geometry(const YCHAR *name,
+ const ynandif_Geometry *geometry)
+{
+ YCHAR *clonedName = YMALLOC(sizeof(YCHAR) * (yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH)+1));
+ struct yaffs_dev *dev = YMALLOC(sizeof(struct yaffs_dev));
+
+ if(dev && clonedName){
+ memset(dev,0,sizeof(struct yaffs_dev));
+ yaffs_strcpy(clonedName,name);
+
+ dev->param.name = clonedName;
+ dev->param.write_chunk_tags_fn = ynandif_WriteChunkWithTagsToNAND;
+ dev->param.read_chunk_tags_fn = ynandif_ReadChunkWithTagsFromNAND;
+ dev->param.erase_fn = ynandif_EraseBlockInNAND;
+ dev->param.initialise_flash_fn = ynandif_InitialiseNAND;
+ dev->param.query_block_fn = ynandif_QueryNANDBlock;
+ dev->param.bad_block_fn = ynandif_MarkNANDBlockBad;
+ dev->param.n_caches = 20;
+ dev->param.start_block = geometry->start_block;
+ dev->param.end_block = geometry->end_block;
+ dev->param.total_bytes_per_chunk = geometry->dataSize;
+ dev->param.spare_bytes_per_chunk = geometry->spareSize;
+ dev->param.inband_tags = geometry->inband_tags;
+ dev->param.chunks_per_block = geometry->pagesPerBlock;
+ dev->param.use_nand_ecc = geometry->hasECC;
+ dev->param.is_yaffs2 = geometry->useYaffs2;
+ dev->param.n_reserved_blocks = 5;
+ dev->driver_context = (void *)geometry;
+
+ yaffs_add_device(dev);
+
+ return dev;
+ }
+
+ if(dev)
+ YFREE(dev);
+ if(clonedName)
+ YFREE(clonedName);
+
+ return NULL;
+}
projects / yaffs2.git / blobdiff