From 98824ce3f95e6c4d08d439b779c0acb0048045a6 Mon Sep 17 00:00:00 2001 From: William Juul Date: Tue, 10 Jun 2008 16:18:13 -0500 Subject: Clean out unneeded files Signed-off-by: William Juul --- fs/yaffs2/direct/yaffs_fileem2k.c | 443 -------------------------------------- 1 file changed, 443 deletions(-) delete mode 100644 fs/yaffs2/direct/yaffs_fileem2k.c (limited to 'fs/yaffs2/direct/yaffs_fileem2k.c') diff --git a/fs/yaffs2/direct/yaffs_fileem2k.c b/fs/yaffs2/direct/yaffs_fileem2k.c deleted file mode 100644 index 34a4e87..0000000 --- a/fs/yaffs2/direct/yaffs_fileem2k.c +++ /dev/null @@ -1,443 +0,0 @@ -/* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * - * Copyright (C) 2002-2007 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. - */ - -/* - * This provides a YAFFS nand emulation on a file for emulating 2kB pages. - * This is only intended as test code to test persistence etc. - */ - -/* XXX U-BOOT XXX */ -#include - -const char *yaffs_flashif_c_version = "$Id: yaffs_fileem2k.c,v 1.12 2007/02/14 01:09:06 wookey Exp $"; - - -#include "yportenv.h" - -#include "yaffs_flashif.h" -#include "yaffs_guts.h" -#include "devextras.h" - -#include -#include -#include -#include - -#include "yaffs_fileem2k.h" -#include "yaffs_packedtags2.h" - -//#define SIMULATE_FAILURES - -typedef struct -{ - __u8 data[PAGE_SIZE]; // Data + spare -} yflash_Page; - -typedef struct -{ - yflash_Page page[PAGES_PER_BLOCK]; // The pages in the block - -} yflash_Block; - - - -#define MAX_HANDLES 20 -#define BLOCKS_PER_HANDLE 8000 - -typedef struct -{ - int handle[MAX_HANDLES]; - int nBlocks; -} yflash_Device; - -static yflash_Device filedisk; - -int yaffs_testPartialWrite = 0; - - - - -static __u8 localBuffer[PAGE_SIZE]; - -static char *NToName(char *buf,int n) -{ - sprintf(buf,"emfile%d",n); - return buf; -} - -static char dummyBuffer[BLOCK_SIZE]; - -static int GetBlockFileHandle(int n) -{ - int h; - int requiredSize; - - char name[40]; - NToName(name,n); - int fSize; - int i; - - h = open(name, O_RDWR | O_CREAT, S_IREAD | S_IWRITE); - if(h >= 0){ - fSize = lseek(h,0,SEEK_END); - requiredSize = BLOCKS_PER_HANDLE * BLOCK_SIZE; - if(fSize < requiredSize){ - for(i = 0; i < BLOCKS_PER_HANDLE; i++) - if(write(h,dummyBuffer,BLOCK_SIZE) != BLOCK_SIZE) - return -1; - - } - } - - return h; - -} - -static int CheckInit(void) -{ - static int initialised = 0; - int h; - int i; - - - off_t fSize; - off_t requiredSize; - int written; - int blk; - - yflash_Page p; - - if(initialised) - { - return YAFFS_OK; - } - - initialised = 1; - - memset(dummyBuffer,0xff,sizeof(dummyBuffer)); - - - filedisk.nBlocks = SIZE_IN_MB * BLOCKS_PER_MB; - - for(i = 0; i < MAX_HANDLES; i++) - filedisk.handle[i] = -1; - - for(i = 0,blk = 0; blk < filedisk.nBlocks; blk+=BLOCKS_PER_HANDLE,i++) - filedisk.handle[i] = GetBlockFileHandle(i); - - - return 1; -} - - -int yflash_GetNumberOfBlocks(void) -{ - CheckInit(); - - return filedisk.nBlocks; -} - -int yflash_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, yaffs_ExtendedTags *tags) -{ - int written; - int pos; - int h; - int i; - int nRead; - int error; - - T(YAFFS_TRACE_MTD,(TSTR("write chunk %d data %x tags %x" TENDSTR),chunkInNAND,(unsigned)data, (unsigned)tags)); - - CheckInit(); - - - - if(data) - { - pos = (chunkInNAND % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE; - h = filedisk.handle[(chunkInNAND / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))]; - - lseek(h,pos,SEEK_SET); - nRead = read(h, localBuffer,dev->nDataBytesPerChunk); - for(i = error = 0; i < dev->nDataBytesPerChunk && !error; i++){ - if(localBuffer[i] != 0xFF){ - printf("nand simulation: chunk %d data byte %d was %0x2\n", - chunkInNAND,i,localBuffer[i]); - error = 1; - } - } - - for(i = 0; i < dev->nDataBytesPerChunk; i++) - localBuffer[i] &= data[i]; - - if(memcmp(localBuffer,data,dev->nDataBytesPerChunk)) - printf("nand simulator: data does not match\n"); - - lseek(h,pos,SEEK_SET); - written = write(h,localBuffer,dev->nDataBytesPerChunk); - - if(yaffs_testPartialWrite){ - close(h); - exit(1); - } - -#ifdef SIMULATE_FAILURES - if((chunkInNAND >> 6) == 100) - written = 0; - - if((chunkInNAND >> 6) == 110) - written = 0; -#endif - - - if(written != dev->nDataBytesPerChunk) return YAFFS_FAIL; - } - - if(tags) - { - pos = (chunkInNAND % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE + PAGE_DATA_SIZE ; - h = filedisk.handle[(chunkInNAND / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))]; - - lseek(h,pos,SEEK_SET); - - if( 0 && dev->isYaffs2) - { - - written = write(h,tags,sizeof(yaffs_ExtendedTags)); - if(written != sizeof(yaffs_ExtendedTags)) return YAFFS_FAIL; - } - else - { - yaffs_PackedTags2 pt; - yaffs_PackTags2(&pt,tags); - __u8 * ptab = (__u8 *)&pt; - - nRead = read(h,localBuffer,sizeof(pt)); - for(i = error = 0; i < sizeof(pt) && !error; i++){ - if(localBuffer[i] != 0xFF){ - printf("nand simulation: chunk %d oob byte %d was %0x2\n", - chunkInNAND,i,localBuffer[i]); - error = 1; - } - } - - for(i = 0; i < sizeof(pt); i++) - localBuffer[i] &= ptab[i]; - - if(memcmp(localBuffer,&pt,sizeof(pt))) - printf("nand sim: tags corruption\n"); - - lseek(h,pos,SEEK_SET); - - written = write(h,localBuffer,sizeof(pt)); - if(written != sizeof(pt)) return YAFFS_FAIL; - } - } - - - return YAFFS_OK; - -} - -int yaffs_CheckAllFF(const __u8 *ptr, int n) -{ - while(n) - { - n--; - if(*ptr!=0xFF) return 0; - ptr++; - } - return 1; -} - - -static int fail300 = 1; -static int fail320 = 1; - -static int failRead10 = 2; - -int yflash_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_ExtendedTags *tags) -{ - int nread; - int pos; - int h; - - T(YAFFS_TRACE_MTD,(TSTR("read chunk %d data %x tags %x" TENDSTR),chunkInNAND,(unsigned)data, (unsigned)tags)); - - CheckInit(); - - - - if(data) - { - - pos = (chunkInNAND % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE; - h = filedisk.handle[(chunkInNAND / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))]; - lseek(h,pos,SEEK_SET); - nread = read(h,data,dev->nDataBytesPerChunk); - - - if(nread != dev->nDataBytesPerChunk) return YAFFS_FAIL; - } - - if(tags) - { - pos = (chunkInNAND % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE + PAGE_DATA_SIZE; - h = filedisk.handle[(chunkInNAND / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))]; - lseek(h,pos,SEEK_SET); - - if(0 && dev->isYaffs2) - { - nread= read(h,tags,sizeof(yaffs_ExtendedTags)); - if(nread != sizeof(yaffs_ExtendedTags)) return YAFFS_FAIL; - if(yaffs_CheckAllFF((__u8 *)tags,sizeof(yaffs_ExtendedTags))) - { - yaffs_InitialiseTags(tags); - } - else - { - tags->chunkUsed = 1; - } - } - else - { - yaffs_PackedTags2 pt; - nread= read(h,&pt,sizeof(pt)); - yaffs_UnpackTags2(tags,&pt); -#ifdef SIMULATE_FAILURES - if((chunkInNAND >> 6) == 100) { - if(fail300 && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR){ - tags->eccResult = YAFFS_ECC_RESULT_FIXED; - fail300 = 0; - } - - } - if((chunkInNAND >> 6) == 110) { - if(fail320 && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR){ - tags->eccResult = YAFFS_ECC_RESULT_FIXED; - fail320 = 0; - } - } -#endif - if(failRead10>0 && chunkInNAND == 10){ - failRead10--; - nread = 0; - } - - if(nread != sizeof(pt)) return YAFFS_FAIL; - } - } - - - return YAFFS_OK; - -} - - -int yflash_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) -{ - int written; - int h; - - yaffs_PackedTags2 pt; - - CheckInit(); - - memset(&pt,0,sizeof(pt)); - h = filedisk.handle[(blockNo / ( BLOCKS_PER_HANDLE))]; - lseek(h,((blockNo % BLOCKS_PER_HANDLE) * dev->nChunksPerBlock) * PAGE_SIZE + PAGE_DATA_SIZE,SEEK_SET); - written = write(h,&pt,sizeof(pt)); - - if(written != sizeof(pt)) return YAFFS_FAIL; - - - return YAFFS_OK; - -} - -int yflash_EraseBlockInNAND(yaffs_Device *dev, int blockNumber) -{ - - int i; - int h; - - CheckInit(); - - printf("erase block %d\n",blockNumber); - - if(blockNumber == 320) - fail320 = 1; - - if(blockNumber < 0 || blockNumber >= filedisk.nBlocks) - { - T(YAFFS_TRACE_ALWAYS,("Attempt to erase non-existant block %d\n",blockNumber)); - return YAFFS_FAIL; - } - else - { - - __u8 pg[PAGE_SIZE]; - int syz = PAGE_SIZE; - int pos; - - memset(pg,0xff,syz); - - - h = filedisk.handle[(blockNumber / ( BLOCKS_PER_HANDLE))]; - lseek(h,((blockNumber % BLOCKS_PER_HANDLE) * dev->nChunksPerBlock) * PAGE_SIZE,SEEK_SET); - for(i = 0; i < dev->nChunksPerBlock; i++) - { - write(h,pg,PAGE_SIZE); - } - pos = lseek(h, 0,SEEK_CUR); - - return YAFFS_OK; - } - -} - -int yflash_InitialiseNAND(yaffs_Device *dev) -{ - CheckInit(); - - return YAFFS_OK; -} - - - - -int yflash_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, yaffs_BlockState *state, int *sequenceNumber) -{ - yaffs_ExtendedTags tags; - int chunkNo; - - *sequenceNumber = 0; - - chunkNo = blockNo * dev->nChunksPerBlock; - - yflash_ReadChunkWithTagsFromNAND(dev,chunkNo,NULL,&tags); - if(tags.blockBad) - { - *state = YAFFS_BLOCK_STATE_DEAD; - } - else if(!tags.chunkUsed) - { - *state = YAFFS_BLOCK_STATE_EMPTY; - } - else if(tags.chunkUsed) - { - *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; - *sequenceNumber = tags.sequenceNumber; - } - return YAFFS_OK; -} -- cgit v1.1