diff options
Diffstat (limited to 'src/Dolphin/card/CARDMount.c')
| -rw-r--r-- | src/Dolphin/card/CARDMount.c | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/src/Dolphin/card/CARDMount.c b/src/Dolphin/card/CARDMount.c new file mode 100644 index 0000000..fd361e9 --- /dev/null +++ b/src/Dolphin/card/CARDMount.c @@ -0,0 +1,354 @@ +#include <dolphin/card.h> +#include <dolphin/dsp.h> +#include <dolphin/dvd.h> +#include <dolphin/os.h> + +#include <dolphin/CARDPriv.h> +#include <dolphin/OSRtcPriv.h> + +u8 GameChoice : (OS_BASE_CACHED | 0x000030E3); + +static u32 SectorSizeTable[8] = { + 8 * 1024, 16 * 1024, 32 * 1024, 64 * 1024, 128 * 1024, 256 * 1024, 0, 0, +}; + +static u32 LatencyTable[8] = { + 4, 8, 16, 32, 64, 128, 256, 512, +}; + +void __CARDMountCallback(s32 chan, s32 result); +static void DoUnmount(s32 chan, s32 result); + +static BOOL IsCard(u32 id) { + u32 size; + s32 sectorSize; + if (id & (0xFFFF0000) && (id != 0x80000004 || __CARDVendorID == 0xFFFF)) { + return FALSE; + } + + if ((id & 3) != 0) { + return FALSE; + } + + size = id & 0xfc; + switch (size) { + case 4: + case 8: + case 16: + case 32: + case 64: + case 128: + break; + default: + return FALSE; + break; + } + + sectorSize = SectorSizeTable[(id & 0x00003800) >> 11]; + if (sectorSize == 0) { + return FALSE; + } + + if ((size * 1024 * 1024 / 8) / sectorSize < 8) { + return FALSE; + } + + return TRUE; +} + +s32 CARDProbeEx(s32 chan, s32* memSize, s32* sectorSize) { + u32 id; + CARDControl* card; + BOOL enabled; + s32 result; + int probe; + + if (chan < 0 || 2 <= chan) { + return CARD_RESULT_FATAL_ERROR; + } + + if (GameChoice & 0x80) { + return CARD_RESULT_NOCARD; + } + + card = &__CARDBlock[chan]; + enabled = OSDisableInterrupts(); + + probe = EXIProbeEx(chan); + if (probe == -1) { + result = CARD_RESULT_NOCARD; + } else if (probe == 0) { + result = CARD_RESULT_BUSY; + } else if (card->attached) { + if (card->mountStep < 1) { + result = CARD_RESULT_BUSY; + } else { + if (memSize) { + *memSize = card->size; + } + if (sectorSize) { + *sectorSize = card->sectorSize; + } + result = CARD_RESULT_READY; + } + } else if ((EXIGetState(chan) & 8)) { + result = CARD_RESULT_WRONGDEVICE; + } else if (!EXIGetID(chan, 0, &id)) { + result = CARD_RESULT_BUSY; + } else if (IsCard(id)) { + if (memSize) { + *memSize = (s32)(id & 0xfc); + } + if (sectorSize) { + *sectorSize = SectorSizeTable[(id & 0x00003800) >> 11]; + } + result = CARD_RESULT_READY; + } else { + result = CARD_RESULT_WRONGDEVICE; + } + + OSRestoreInterrupts(enabled); + return result; +} + +static s32 DoMount(s32 chan) { + CARDControl* card; + u32 id; + u8 status; + s32 result; + OSSramEx* sram; + int i; + u8 checkSum; + int step; + + card = &__CARDBlock[chan]; + + if (card->mountStep == 0) { + if (EXIGetID(chan, 0, &id) == 0) { + result = CARD_RESULT_NOCARD; + } else if (IsCard(id)) { + result = CARD_RESULT_READY; + } else { + result = CARD_RESULT_WRONGDEVICE; + } + if (result < 0) { + goto error; + } + + card->cid = id; + + card->size = (u16)(id & 0xFC); + card->sectorSize = SectorSizeTable[(id & 0x00003800) >> 11]; + card->cBlock = (u16)((card->size * 1024 * 1024 / 8) / card->sectorSize); + card->latency = LatencyTable[(id & 0x00000700) >> 8]; + + result = __CARDClearStatus(chan); + if (result < 0) { + goto error; + } + result = __CARDReadStatus(chan, &status); + if (result < 0) { + goto error; + } + + if (!EXIProbe(chan)) { + result = CARD_RESULT_NOCARD; + goto error; + } + + if (!(status & 0x40)) { + result = __CARDUnlock(chan, card->id); + if (result < 0) { + goto error; + } + + checkSum = 0; + sram = __OSLockSramEx(); + for (i = 0; i < 12; i++) { + sram->flashID[chan][i] = card->id[i]; + checkSum += card->id[i]; + } + sram->flashIDCheckSum[chan] = (u8)~checkSum; + __OSUnlockSramEx(TRUE); + + return result; + } else { + card->mountStep = 1; + + checkSum = 0; + sram = __OSLockSramEx(); + for (i = 0; i < 12; i++) { + checkSum += sram->flashID[chan][i]; + } + __OSUnlockSramEx(FALSE); + if (sram->flashIDCheckSum[chan] != (u8)~checkSum) { + result = CARD_RESULT_IOERROR; + goto error; + } + } + } + + if (card->mountStep == 1) { + if (card->cid == 0x80000004) { + u16 vendorID; + + sram = __OSLockSramEx(); + vendorID = *(u16*)sram->flashID[chan]; + __OSUnlockSramEx(FALSE); + + if (__CARDVendorID == 0xffff || vendorID != __CARDVendorID) { + result = CARD_RESULT_WRONGDEVICE; + goto error; + } + } + + card->mountStep = 2; + + result = __CARDEnableInterrupt(chan, TRUE); + if (result < 0) { + goto error; + } + + EXISetExiCallback(chan, __CARDExiHandler); + EXIUnlock(chan); + DCInvalidateRange(card->workArea, CARD_WORKAREA_SIZE); + } + + step = card->mountStep - 2; + result = __CARDRead(chan, (u32)card->sectorSize * step, CARD_SYSTEM_BLOCK_SIZE, + (u8*)card->workArea + (CARD_SYSTEM_BLOCK_SIZE * step), __CARDMountCallback); + if (result < 0) { + __CARDPutControlBlock(card, result); + } + return result; + +error: + EXIUnlock(chan); + DoUnmount(chan, result); + return result; +} + +void __CARDMountCallback(s32 chan, s32 result) { + CARDControl* card; + CARDCallback callback; + + card = &__CARDBlock[chan]; + + switch (result) { + case CARD_RESULT_READY: + if (++card->mountStep < CARD_MAX_MOUNT_STEP) { + result = DoMount(chan); + if (0 <= result) { + return; + } + } else { + result = __CARDVerify(card); + } + break; + case CARD_RESULT_UNLOCKED: + card->unlockCallback = __CARDMountCallback; + if (!EXILock(chan, 0, __CARDUnlockedHandler)) { + return; + } + card->unlockCallback = 0; + + result = DoMount(chan); + if (0 <= result) { + return; + } + break; + case CARD_RESULT_IOERROR: + case CARD_RESULT_NOCARD: + DoUnmount(chan, result); + break; + } + + callback = card->apiCallback; + card->apiCallback = 0; + __CARDPutControlBlock(card, result); + callback(chan, result); +} + +s32 CARDMountAsync(s32 chan, void* workArea, CARDCallback detachCallback, + CARDCallback attachCallback) { + CARDControl* card; + BOOL enabled; + + if (chan < 0 || 2 <= chan) { + return CARD_RESULT_FATAL_ERROR; + } + if (GameChoice & 0x80) { + return CARD_RESULT_NOCARD; + } + card = &__CARDBlock[chan]; + + enabled = OSDisableInterrupts(); + if (card->result == CARD_RESULT_BUSY) { + OSRestoreInterrupts(enabled); + return CARD_RESULT_BUSY; + } + + if (!card->attached && (EXIGetState(chan) & 0x08)) { + OSRestoreInterrupts(enabled); + return CARD_RESULT_WRONGDEVICE; + } + + card->result = CARD_RESULT_BUSY; + card->workArea = workArea; + card->extCallback = detachCallback; + card->apiCallback = attachCallback ? attachCallback : __CARDDefaultApiCallback; + card->exiCallback = 0; + + if (!card->attached && !EXIAttach(chan, __CARDExtHandler)) { + card->result = CARD_RESULT_NOCARD; + OSRestoreInterrupts(enabled); + return CARD_RESULT_NOCARD; + } + + card->mountStep = 0; + card->attached = TRUE; + EXISetExiCallback(chan, 0); + OSCancelAlarm(&card->alarm); + + card->currentDir = 0; + card->currentFat = 0; + + OSRestoreInterrupts(enabled); + + card->unlockCallback = __CARDMountCallback; + if (!EXILock(chan, 0, __CARDUnlockedHandler)) { + return CARD_RESULT_READY; + } + card->unlockCallback = 0; + + return DoMount(chan); +} + +static void DoUnmount(s32 chan, s32 result) { + CARDControl* card; + BOOL enabled; + + card = &__CARDBlock[chan]; + enabled = OSDisableInterrupts(); + if (card->attached) { + EXISetExiCallback(chan, 0); + EXIDetach(chan); + OSCancelAlarm(&card->alarm); + card->attached = FALSE; + card->result = result; + card->mountStep = 0; + } + OSRestoreInterrupts(enabled); +} + +s32 CARDUnmount(s32 chan) { + CARDControl* card; + s32 result; + + result = __CARDGetControlBlock(chan, &card); + if (result < 0) { + return result; + } + DoUnmount(chan, CARD_RESULT_NOCARD); + return CARD_RESULT_READY; +} |