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revert cache bypass

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This commit is contained in:
Dave Murphy 2011-01-11 12:11:09 +00:00
parent ba3622a4cd
commit 8d8b83e967
1 changed files with 0 additions and 43 deletions
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43
source/cache.c
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@ -264,34 +264,6 @@ bool _FAT_cache_eraseWritePartialSector (CACHE* cache, const void* buffer, sec_t
return true;
}
#ifndef GEKKO
static CACHE_ENTRY* _FAT_cache_findPage(CACHE *cache, sec_t sector, sec_t count) {
unsigned int i;
CACHE_ENTRY* cacheEntries = cache->cacheEntries;
unsigned int numberOfPages = cache->numberOfPages;
CACHE_ENTRY *entry = NULL;
sec_t lowest = UINT_MAX;
for(i=0;i<numberOfPages;i++) {
if (cacheEntries[i].sector != CACHE_FREE) {
bool intersect;
if (sector > cacheEntries[i].sector) {
intersect = sector - cacheEntries[i].sector < cacheEntries[i].count;
} else {
intersect = cacheEntries[i].sector - sector < count;
}
if ( intersect && (cacheEntries[i].sector < lowest)) {
lowest = cacheEntries[i].sector;
entry = &cacheEntries[i];
}
}
}
return entry;
}
#endif
bool _FAT_cache_writeSectors (CACHE* cache, sec_t sector, sec_t numSectors, const void* buffer)
{
@ -302,24 +274,9 @@ bool _FAT_cache_writeSectors (CACHE* cache, sec_t sector, sec_t numSectors, cons
while(numSectors>0)
{
#ifdef GEKKO
entry = _FAT_cache_getPage(cache,sector);
if(entry==NULL) return false;
#else
entry = _FAT_cache_findPage(cache,sector,numSectors);
if(entry==NULL)
return _FAT_disc_writeSectors(cache->disc,sector,numSectors,src);
if ( entry->sector > sector) {
secs_to_write = entry->sector - sector;
_FAT_disc_writeSectors(cache->disc,sector,secs_to_write,src);
src += (secs_to_write*BYTES_PER_READ);
sector += secs_to_write;
numSectors -= secs_to_write;
}
#endif
sec = sector - entry->sector;
secs_to_write = entry->count - sec;
if(secs_to_write>numSectors) secs_to_write = numSectors;