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#include <libultraship.h>
#include "osint.h"
#include "piint.h"
#include "libultra_internal.h"
static void __osLeoResume(void);
static void __osLeoAbnormalResume(void);
extern u8 leoDiskStack[OS_PIM_STACKSIZE]; // technically should have a OS_LEO_STACKSIZE or something..
extern u32 D_800EA5F0;
u8 leoDiskStack[OS_PIM_STACKSIZE]; // technically should have a OS_LEO_STACKSIZE or something..
s32 __osLeoInterrupt() {
u32 stat;
volatile u32 pistat;
u32 bmstat;
__OSTranxInfo* info;
__OSBlockInfo* blockInfo;
if (!D_800EA5F0) {
return 0;
}
info = &__osDiskHandle->transferInfo;
blockInfo = &info->block[info->blockNum];
pistat = IO_READ(PI_STATUS_REG);
if (pistat & PI_STATUS_DMA_BUSY) {
IO_WRITE(PI_STATUS_REG, PI_STATUS_RESET | PI_STATUS_CLR_INTR);
WAIT_ON_LEO_IO_BUSY(pistat);
stat = IO_READ(LEO_STATUS);
if (stat & LEO_STATUS_MECHANIC_INTERRUPT) {
WAIT_ON_LEO_IO_BUSY(pistat);
IO_WRITE(LEO_BM_CTL, info->bmCtlShadow | LEO_BM_CTL_CLR_MECHANIC_INTR);
}
info->errStatus = LEO_ERROR_75;
__osLeoAbnormalResume();
return 1;
}
WAIT_ON_LEO_IO_BUSY(pistat);
stat = IO_READ(LEO_STATUS);
if (stat & LEO_STATUS_MECHANIC_INTERRUPT) {
WAIT_ON_LEO_IO_BUSY(pistat);
IO_WRITE(LEO_BM_CTL, info->bmCtlShadow | LEO_BM_CTL_CLR_MECHANIC_INTR);
info->errStatus = LEO_ERROR_GOOD;
return 0;
}
if (stat & LEO_STATUS_BUFFER_MANAGER_ERROR) {
info->errStatus = LEO_ERROR_3;
__osLeoAbnormalResume();
return 1;
}
if (info->cmdType == LEO_CMD_TYPE_1) {
if ((stat & LEO_STATUS_DATA_REQUEST) == 0) {
if (info->sectorNum + 1 != info->transferMode * 85) {
info->errStatus = LEO_ERROR_6;
__osLeoAbnormalResume();
return 1;
}
IO_WRITE(PI_STATUS_REG, PI_STATUS_CLR_INTR);
__OSGlobalIntMask |= OS_IM_PI;
info->errStatus = LEO_ERROR_GOOD;
__osLeoResume();
return 1;
}
blockInfo->dramAddr = (void*) ((u32) blockInfo->dramAddr + blockInfo->sectorSize);
info->sectorNum++;
osEPiRawStartDma(__osDiskHandle, OS_WRITE, LEO_SECTOR_BUFF, blockInfo->dramAddr, blockInfo->sectorSize);
return 1;
}
if (info->cmdType == LEO_CMD_TYPE_0) {
if (info->transferMode == LEO_SECTOR_MODE) {
if ((s32) blockInfo->C1ErrNum + 17 < info->sectorNum) {
info->errStatus = LEO_ERROR_GOOD;
__osLeoAbnormalResume();
return 1;
}
if ((stat & LEO_STATUS_DATA_REQUEST) == 0) {
info->errStatus = LEO_ERROR_17;
__osLeoAbnormalResume();
return 1;
}
} else {
blockInfo->dramAddr = (void*) ((u32) blockInfo->dramAddr + blockInfo->sectorSize);
}
bmstat = IO_READ(LEO_BM_STATUS);
if ((bmstat & LEO_BM_STATUS_C1SINGLE && bmstat & LEO_BM_STATUS_C1DOUBLE) || bmstat & LEO_BM_STATUS_MICRO) {
if (blockInfo->C1ErrNum > 3) {
if (info->transferMode != LEO_SECTOR_MODE || info->sectorNum > 0x52) {
info->errStatus = LEO_ERROR_17;
__osLeoAbnormalResume();
return 1;
}
} else {
s32 errNum = blockInfo->C1ErrNum;
blockInfo->C1ErrSector[errNum] = info->sectorNum + 1;
}
blockInfo->C1ErrNum++;
}
if (stat & LEO_STATUS_C2_TRANSFER) {
if (info->sectorNum != 87) {
info->errStatus = LEO_ERROR_6;
__osLeoAbnormalResume();
}
if (info->transferMode == LEO_TRACK_MODE && info->blockNum == 0) {
info->blockNum = 1;
info->sectorNum = -1;
info->block[1].dramAddr = (void*) ((u32) info->block[1].dramAddr - info->block[1].sectorSize);
} else {
IO_WRITE(PI_STATUS_REG, PI_STATUS_CLR_INTR);
__OSGlobalIntMask |= OS_IM_PI;
}
osEPiRawStartDma(__osDiskHandle, OS_READ, LEO_C2_BUFF, blockInfo->C2Addr, blockInfo->sectorSize * 4);
info->errStatus = LEO_ERROR_GOOD;
return 1;
}
if (info->sectorNum == -1 && info->transferMode == LEO_TRACK_MODE && info->blockNum == 1) {
__OSBlockInfo* bptr = &info->block[0];
if (bptr->C1ErrNum == 0) {
if (((u32*) bptr->C2Addr)[0] | ((u32*) bptr->C2Addr)[1] | ((u32*) bptr->C2Addr)[2] |
((u32*) bptr->C2Addr)[3]) {
info->errStatus = LEO_ERROR_6;
__osLeoAbnormalResume();
return 1;
}
}
info->errStatus = LEO_ERROR_GOOD;
__osLeoResume();
}
info->sectorNum++;
if (stat & LEO_STATUS_DATA_REQUEST) {
if (info->sectorNum > 0x54) {
info->errStatus = LEO_ERROR_6;
__osLeoAbnormalResume();
return 1;
}
osEPiRawStartDma(__osDiskHandle, 0, LEO_SECTOR_BUFF, blockInfo->dramAddr, blockInfo->sectorSize);
info->errStatus = LEO_ERROR_GOOD;
return 1;
}
if (info->sectorNum <= 0x54) {
info->errStatus = LEO_ERROR_6;
__osLeoAbnormalResume();
return 1;
}
return 1;
}
info->errStatus = LEO_ERROR_75;
__osLeoAbnormalResume();
return 1;
}
static void __osLeoAbnormalResume(void) {
__OSTranxInfo* info;
u32 pistat;
info = &__osDiskHandle->transferInfo;
WAIT_ON_LEO_IO_BUSY(pistat);
IO_WRITE(LEO_BM_CTL, info->bmCtlShadow | LEO_BM_CTL_RESET);
WAIT_ON_LEO_IO_BUSY(pistat);
IO_WRITE(LEO_BM_CTL, info->bmCtlShadow);
__osLeoResume();
IO_WRITE(PI_STATUS_REG, PI_STATUS_CLR_INTR);
__OSGlobalIntMask |= OS_IM_PI;
}
static void __osLeoResume(void) {
__OSEventState* es;
OSMesgQueue* mq;
s32 last;
es = &__osEventStateTab[OS_EVENT_PI];
mq = es->messageQueue;
if (mq == NULL || MQ_IS_FULL(mq)) {
return;
}
last = (mq->first + mq->validCount) % mq->msgCount;
mq->msg[last] = es->message;
mq->validCount++;
if (mq->mtqueue->next != NULL) {
__osEnqueueThread(&__osRunQueue, __osPopThread(&mq->mtqueue));
}
}
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