* This is only intended as test code to test persistence etc.
*/
-const char *yaffs_flashif2_c_version = "$Id: yaffs_fileem2k.c,v 1.24 2010-02-18 01:18:04 charles Exp $";
-
-
#include "yportenv.h"
#include "yaffs_trace.h"
#include "yaffs_guts.h"
#include "yaffs_fileem2k.h"
#include "yaffs_packedtags2.h"
-#include "yaffs_tagsvalidity.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
-#include <unistd.h>
-
-
+#include <unistd.h>
#define REPORT_ERROR 0
-typedef struct
+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;
{
nops_so_far++;
-
-
+
+
remaining_ops--;
if(simulate_power_failure &&
remaining_ops < 1){
{
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);
for(i = 0; i < BLOCKS_PER_HANDLE; i++)
if(write(h,dummyBuffer,BLOCK_SIZE) != BLOCK_SIZE)
return -1;
-
+
}
}
-
+
return h;
}
int blk;
-
- if(initialised)
+
+ if(initialised)
{
return YAFFS_OK;
}
initialised = 1;
-
+
srand(random_seed);
remaining_ops = (rand() % 1000) * 5;
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 yflash2_GetNumberOfBlocks(void)
{
CheckInit();
-
+
return filedisk.nBlocks;
}
-int yflash2_WriteChunkWithTagsToNAND(struct yaffs_dev *dev,int nand_chunk,const u8 *data, const struct yaffs_ext_tags *tags)
-{
- int written;
- int pos;
- int h;
- int i;
- int nRead;
- int error;
-
- yaffs_trace(YAFFS_TRACE_MTD, "write chunk %d data %p tags %p",nand_chunk, data, tags);
-
- CheckInit();
-
-
- 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);
-
- pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE;
- h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
-
- lseek(h,pos,SEEK_SET);
- written = write(h,data,dev->param.total_bytes_per_chunk);
-
-
- if(yaffs_test_partial_write){
- close(h);
- exit(1);
- }
-
- if(written != dev->param.total_bytes_per_chunk) return YAFFS_FAIL;
-
-
- }
-
- else {
- /* First do a write of a partial page */
- int n_partials;
- int bpos;
-
- if(data)
- {
- pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE;
- h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
-
-
- memcpy(localBuffer,data, dev->data_bytes_per_chunk);
-
- n_partials = rand()%20;
-
- for(i = 0; i < n_partials; i++){
- bpos = rand() % dev->data_bytes_per_chunk;
-
- localBuffer[bpos] |= (1 << (rand() & 7));
- }
-
- if(REPORT_ERROR && memcmp(localBuffer,data,dev->data_bytes_per_chunk))
- printf("nand simulator: data does not match\n");
-
- lseek(h,pos,SEEK_SET);
- written = write(h,localBuffer,dev->data_bytes_per_chunk);
-
- if(yaffs_test_partial_write){
- close(h);
- exit(1);
- }
-
-
- if(written != dev->data_bytes_per_chunk) return YAFFS_FAIL;
- }
- // yflash2_MaybePowerFail(nand_chunk,1);
-
- if(tags)
- {
- pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE + PAGE_DATA_SIZE ;
- h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
-
- lseek(h,pos,SEEK_SET);
-
- if( 0 && dev->param.is_yaffs2)
- {
-
- written = write(h,tags,sizeof(struct yaffs_ext_tags));
- if(written != sizeof(struct yaffs_ext_tags)) return YAFFS_FAIL;
- }
- else
- {
- struct yaffs_packed_tags2 pt;
- yaffs_pack_tags2(&pt,tags, !dev->param.no_tags_ecc);
- u8 * ptab = (u8 *)&pt;
-
- nRead = read(h,localBuffer,sizeof(pt));
- for(i = error = 0; REPORT_ERROR && i < sizeof(pt) && !error; i++){
- if(localBuffer[i] != 0xFF){
- printf("nand simulation: chunk %d oob byte %d was %0x2\n",
- nand_chunk,i,localBuffer[i]);
- error = 1;
- }
- }
-
- for(i = 0; i < sizeof(pt); i++)
- localBuffer[i] &= ptab[i];
-
- n_partials = rand()% sizeof(pt);
-
- for(i = 0; i < n_partials; i++){
- bpos = rand() % sizeof(pt);
-
- localBuffer[bpos] |= (1 << (rand() & 7));
- }
-
- if(REPORT_ERROR && 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;
- }
- }
-
- //yflash2_MaybePowerFail(nand_chunk,2);
-
- /* Next do the whole write */
- if(data)
- {
- pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE;
- h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
-
-
- memset(localBuffer,0xFF, PAGE_SIZE);
- for(i = 0; i < dev->data_bytes_per_chunk; i++){
- localBuffer[i] &= data[i];
- }
-
- if(REPORT_ERROR && memcmp(localBuffer,data,dev->data_bytes_per_chunk))
- printf("nand simulator: data does not match\n");
-
- lseek(h,pos,SEEK_SET);
- written = write(h,localBuffer,dev->data_bytes_per_chunk);
-
- if(yaffs_test_partial_write){
- close(h);
- exit(1);
- }
-
-
- if(written != dev->data_bytes_per_chunk) return YAFFS_FAIL;
- }
-
- if(tags)
- {
- pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE + PAGE_DATA_SIZE ;
- h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
-
- lseek(h,pos,SEEK_SET);
-
- if( 0 && dev->param.is_yaffs2)
- {
-
- written = write(h,tags,sizeof(struct yaffs_ext_tags));
- if(written != sizeof(struct yaffs_ext_tags)) return YAFFS_FAIL;
- }
- else
- {
- struct yaffs_packed_tags2 pt;
- yaffs_pack_tags2(&pt,tags,!dev->param.no_tags_ecc);
- u8 * ptab = (u8 *)&pt;
-
- nRead = read(h,localBuffer,sizeof(pt));
- for(i = error = 0; REPORT_ERROR && i < sizeof(pt) && !error; i++){
- if(localBuffer[i] != 0xFF){
- printf("nand simulation: chunk %d oob byte %d was %0x2\n",
- nand_chunk,i,localBuffer[i]);
- error = 1;
- }
- }
-
- for(i = 0; i < sizeof(pt); i++)
- localBuffer[i] &= ptab[i];
-
- if(REPORT_ERROR && 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;
- }
- }
-
- yflash2_MaybePowerFail(nand_chunk,3);
-
- }
- return YAFFS_OK;
-
-}
int yaffs_check_all_ff(const u8 *ptr, int n)
{
}
-static int fail300 = 1;
-static int fail320 = 1;
-
-static int failRead10 = 2;
-
-int yflash2_ReadChunkWithTagsFromNAND(struct yaffs_dev *dev,int nand_chunk, u8 *data, struct yaffs_ext_tags *tags)
+static int yflash2_WriteChunk(struct yaffs_dev *dev, int nand_chunk,
+ const u8 *data, int data_len,
+ const u8 *oob, int oob_len)
{
- int nread;
+ int retval = YAFFS_OK;
int pos;
int h;
- int localData = 0;
- int retval = YAFFS_OK;
- int nRead;
-
- yaffs_trace(YAFFS_TRACE_MTD,"read chunk %d data %p tags %p",nand_chunk, data, tags);
-
- CheckInit();
-
-
-
-
- if(dev->param.inband_tags){
- /* Got to suck the tags out of the data area */
- if(!data) {
- localData=1;
- data = yaffs_get_temp_buffer(dev,__LINE__);
- }
+ int nwritten;
-
- struct yaffs_packed_tags2_tags_only * pt2tp;
- pt2tp = (struct yaffs_packed_tags2_tags_only *)&data[dev->data_bytes_per_chunk];
+ (void) dev;
-
+ if (data && data_len) {
pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE;
h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
-
lseek(h,pos,SEEK_SET);
-
- nRead = read(h, data,dev->param.total_bytes_per_chunk);
-
- yaffs_unpack_tags2_tags_only(tags,pt2tp);
-
- if(nread != dev->param.total_bytes_per_chunk)
+ nwritten = write(h,data,data_len);
+ if(nwritten != data_len)
retval = YAFFS_FAIL;
-
- if(localData)
- yaffs_release_temp_buffer(dev,data,__LINE__);
-
-
-
}
-
- else {
-
- if(data)
- {
- pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE;
- h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
- lseek(h,pos,SEEK_SET);
- nread = read(h,data,dev->data_bytes_per_chunk);
-
-
- if(nread != dev->data_bytes_per_chunk)
- retval = YAFFS_FAIL;
- }
-
- if(tags)
- {
- pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE + PAGE_DATA_SIZE;
- h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
- lseek(h,pos,SEEK_SET);
-
- if(0 && dev->param.is_yaffs2)
- {
- nread= read(h,tags,sizeof(struct yaffs_ext_tags));
- if(nread != sizeof(struct yaffs_ext_tags))
- retval = YAFFS_FAIL;
- if(yaffs_check_all_ff((u8 *)tags,sizeof(struct yaffs_ext_tags)))
- {
- yaffs_init_tags(tags);
- }
- else
- {
- tags->chunk_used = 1;
- }
- }
- else
- {
- struct yaffs_packed_tags2 pt;
- nread= read(h,&pt,sizeof(pt));
- yaffs_unpack_tags2(tags,&pt, !dev->param.no_tags_ecc);
-#ifdef SIMULATE_FAILURES
- if((nand_chunk >> 6) == 100) {
- if(fail300 && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR){
- tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
- fail300 = 0;
- }
- }
-
- if((nand_chunk >> 6) == 110) {
- if(fail320 && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR){
- tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
- fail320 = 0;
- }
- }
-#endif
- if(failRead10>0 && nand_chunk == 10){
- failRead10--;
- nread = 0;
- }
-
- if(nread != sizeof(pt))
- retval = YAFFS_FAIL;
- }
- }
+ if (oob && oob_len) {
+ pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE + PAGE_DATA_SIZE;
+ h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
+ lseek(h,pos,SEEK_SET);
+ nwritten = write(h,oob,oob_len);
+ if(nwritten != oob_len)
+ retval = YAFFS_FAIL;
}
-
+ yflash2_MaybePowerFail(nand_chunk,3);
- return retval;
-
+ return retval;
}
-
-int yflash2_MarkNANDBlockBad(struct yaffs_dev *dev, int block_no)
+static int yflash2_ReadChunk(struct yaffs_dev *dev, int nand_chunk,
+ u8 *data, int data_len,
+ u8 *oob, int oob_len,
+ enum yaffs_ecc_result *ecc_result)
{
- int written;
+ int retval = YAFFS_OK;
+ int pos;
int h;
-
- struct yaffs_packed_tags2 pt;
+ int nread;
- CheckInit();
-
- memset(&pt,0,sizeof(pt));
- h = filedisk.handle[(block_no / ( BLOCKS_PER_HANDLE))];
- lseek(h,((block_no % BLOCKS_PER_HANDLE) * dev->param.chunks_per_block) * PAGE_SIZE + PAGE_DATA_SIZE,SEEK_SET);
- written = write(h,&pt,sizeof(pt));
-
- if(written != sizeof(pt)) return YAFFS_FAIL;
-
-
- return YAFFS_OK;
-
+ (void) dev;
+
+ if (data && data_len) {
+ pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE;
+ h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
+ lseek(h,pos,SEEK_SET);
+ nread = read(h,data,data_len);
+ if(nread != data_len)
+ retval = YAFFS_FAIL;
+ }
+
+ if (oob && oob_len) {
+ pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE + PAGE_DATA_SIZE;
+ h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
+ lseek(h,pos,SEEK_SET);
+ nread = read(h,oob,oob_len);
+ if(nread != oob_len)
+ retval = YAFFS_FAIL;
+ }
+
+ if (ecc_result)
+ *ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+
+ return retval;
}
-int yflash2_EraseBlockInNAND(struct yaffs_dev *dev, int blockNumber)
+static int yflash2_EraseBlock(struct yaffs_dev *dev, int block_no)
{
-
int i;
int h;
-
+
CheckInit();
-
- //printf("erase block %d\n",blockNumber);
-
- if(blockNumber == 320)
- fail320 = 1;
-
- if(blockNumber < 0 || blockNumber >= filedisk.nBlocks)
+
+ if(block_no < 0 || block_no >= filedisk.nBlocks)
{
- yaffs_trace(YAFFS_TRACE_ALWAYS,"Attempt to erase non-existant block %d",blockNumber);
+ yaffs_trace(YAFFS_TRACE_ALWAYS,"Attempt to erase non-existant block %d",block_no);
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->param.chunks_per_block) * PAGE_SIZE,SEEK_SET);
+
+ h = filedisk.handle[(block_no / ( BLOCKS_PER_HANDLE))];
+ lseek(h,((block_no % BLOCKS_PER_HANDLE) * dev->param.chunks_per_block) * PAGE_SIZE,SEEK_SET);
for(i = 0; i < dev->param.chunks_per_block; i++)
{
write(h,pg,PAGE_SIZE);
}
pos = lseek(h, 0,SEEK_CUR);
-
+
return YAFFS_OK;
}
-
}
-int yflash2_InitialiseNAND(struct yaffs_dev *dev)
+static int yflash2_MarkBad(struct yaffs_dev *dev, int block_no)
{
+ int written;
+ int h;
+
+ struct yaffs_packed_tags2 pt;
+
CheckInit();
-
+
+ memset(&pt,0,sizeof(pt));
+ h = filedisk.handle[(block_no / ( BLOCKS_PER_HANDLE))];
+ lseek(h,((block_no % BLOCKS_PER_HANDLE) * dev->param.chunks_per_block) * PAGE_SIZE + PAGE_DATA_SIZE,SEEK_SET);
+ written = write(h,&pt,sizeof(pt));
+
+ if(written != sizeof(pt))
+ return YAFFS_FAIL;
+
return YAFFS_OK;
-}
+}
+static int yflash2_CheckBad(struct yaffs_dev *dev, int block_no)
+{
+ (void) dev;
+ (void) block_no;
+ return YAFFS_OK;
+}
-int yflash2_QueryNANDBlock(struct yaffs_dev *dev, int block_no, enum yaffs_block_state *state, u32 *seq_number)
+static int yflash2_Initialise(struct yaffs_dev *dev)
{
- struct yaffs_ext_tags tags;
- int chunkNo;
-
- *seq_number = 0;
-
- chunkNo = block_no * dev->param.chunks_per_block;
-
- yflash2_ReadChunkWithTagsFromNAND(dev,chunkNo,NULL,&tags);
- if(tags.block_bad)
- {
- *state = YAFFS_BLOCK_STATE_DEAD;
- }
- else if(!tags.chunk_used)
- {
- *state = YAFFS_BLOCK_STATE_EMPTY;
- }
- else if(tags.chunk_used)
- {
- *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
- *seq_number = tags.seq_number;
- }
+ (void) dev;
+
+ CheckInit();
+
return YAFFS_OK;
}
+void yflash2_install_drv(struct yaffs_dev *dev)
+{
+ struct yaffs_param *param = &dev->param;
+
+ param->drv_write_chunk_fn = yflash2_WriteChunk;
+ param->drv_read_chunk_fn = yflash2_ReadChunk;
+ param->drv_erase_fn = yflash2_EraseBlock;
+ param->drv_mark_bad_fn = yflash2_MarkBad;
+ param->drv_check_bad_fn = yflash2_CheckBad;
+ param->drv_initialise_fn = yflash2_Initialise;
+
+
+ param->total_bytes_per_chunk = 2048;
+ param->chunks_per_block = 64;
+ param->start_block = 0;
+ param->end_block = yflash2_GetNumberOfBlocks()-1;
+ param->is_yaffs2 = 1;
+ param->use_nand_ecc=1;
+}
projects / yaffs2.git / blobdiff