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#include <dolphin/card.h>
#include <dolphin/dsp.h>
#include <dolphin/dvd.h>
#include <dolphin/os.h>
#include <dolphin/CARDPriv.h>
u16* __CARDGetFatBlock(CARDControl* card) { return card->currentFat; }
static void WriteCallback(s32 chan, s32 result) {
CARDControl* card;
CARDCallback callback;
u16* fat;
u16* fatBack;
card = &__CARDBlock[chan];
if (result >= 0) {
fat = (u16*)((u8*)card->workArea + 0x6000);
fatBack = (u16*)((u8*)card->workArea + 0x8000);
if (card->currentFat == fat) {
card->currentFat = fatBack;
memcpy(fatBack, fat, 0x2000);
} else {
card->currentFat = fat;
memcpy(fat, fatBack, 0x2000);
}
}
if (card->apiCallback == NULL) {
__CARDPutControlBlock(card, result);
}
callback = card->eraseCallback;
if (callback) {
card->eraseCallback = NULL;
callback(chan, result);
}
}
static void EraseCallback(s32 chan, s32 result) {
CARDControl* card;
CARDCallback callback;
u32 temp[2];
u16* fat;
u32 addr;
card = &__CARDBlock[chan];
if (result < 0) {
goto error;
}
fat = __CARDGetFatBlock(card);
addr = ((u32)fat - (u32)card->workArea) / CARD_SYSTEM_BLOCK_SIZE * card->sectorSize;
result = __CARDWrite(chan, addr, CARD_SYSTEM_BLOCK_SIZE, fat, WriteCallback);
if (result < 0) {
goto error;
}
return;
error:
if (card->apiCallback == NULL) {
__CARDPutControlBlock(card, result);
}
callback = card->eraseCallback;
if (callback) {
card->eraseCallback = NULL;
callback(chan, result);
}
}
s32 __CARDAllocBlock(s32 chan, u32 cBlock, CARDCallback callback) {
CARDControl* card;
u16* fat;
u16 iBlock;
u16 startBlock;
u16 prevBlock;
u16 count;
card = &__CARDBlock[chan];
if (!card->attached) {
return CARD_RESULT_NOCARD;
}
fat = __CARDGetFatBlock(card);
if (fat[3] < cBlock) {
return CARD_RESULT_INSSPACE;
}
fat[3] -= cBlock;
startBlock = 0xFFFF;
iBlock = fat[4];
count = 0;
while (0 < cBlock) {
if (card->cBlock - 5 < ++count) {
return CARD_RESULT_BROKEN;
}
iBlock++;
if (!CARDIsValidBlockNo(card, iBlock)) {
iBlock = 5;
}
if (fat[iBlock] == 0x0000u) {
if (startBlock == 0xFFFF) {
startBlock = iBlock;
} else {
fat[prevBlock] = iBlock;
}
prevBlock = iBlock;
fat[iBlock] = 0xFFFF;
--cBlock;
}
}
fat[4] = iBlock;
card->startBlock = startBlock;
return __CARDUpdateFatBlock(chan, fat, callback);
}
s32 __CARDFreeBlock(s32 chan, u16 nBlock, CARDCallback callback) {
CARDControl* card;
u16* fat;
u16 nextBlock;
card = card = &__CARDBlock[chan];
if (!card->attached) {
return CARD_RESULT_NOCARD;
}
fat = __CARDGetFatBlock(card);
while (nBlock != 0xFFFF) {
if (!CARDIsValidBlockNo(card, nBlock)) {
return CARD_RESULT_BROKEN;
}
nextBlock = fat[nBlock];
fat[nBlock] = 0;
nBlock = nextBlock;
++fat[3];
}
return __CARDUpdateFatBlock(chan, fat, callback);
}
s32 __CARDUpdateFatBlock(s32 chan, u16* fat, CARDCallback callback) {
CARDControl* card;
card = &__CARDBlock[chan];
++fat[2];
__CARDCheckSum(fat + 2, 0x1FFC, fat, fat + 1);
DCStoreRange(fat, 0x2000);
card->eraseCallback = callback;
return __CARDEraseSector(chan, (((u32)fat - (u32)card->workArea) / 8192u) * card->sectorSize,
EraseCallback);
}
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