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#include "ultra64.h"
#include "ultra64/leo.h"
#include "ultra64/leoappli.h"
#include "ultra64/leodrive.h"
#include "ultra64/internal.h"
extern OSThread* __osRunQueue;
extern OSIntMask __OSGlobalIntMask;
void __osLeoAbnormalResume(void);
void __osLeoResume(void);
STACK(leoDiskStack, 0x1000);
s32 __osLeoInterrupt(void) {
u32 stat = 0;
volatile u32 pi_stat;
u32 bm_stat;
__OSTranxInfo* info = &__osDiskHandle->transferInfo;
__OSBlockInfo* blockInfo = &info->block[info->blockNum];
pi_stat = IO_READ(PI_STATUS_REG);
if (pi_stat & PI_STATUS_DMA_BUSY) {
__OSGlobalIntMask &= ~0x800;
blockInfo->errStatus = 0x1D;
__osLeoResume();
return 1;
}
pi_stat = IO_READ(PI_STATUS_REG);
while (pi_stat & (PI_STATUS_DMA_BUSY | PI_STATUS_IO_BUSY)) {
pi_stat = IO_READ(PI_STATUS_REG);
}
stat = IO_READ(ASIC_STATUS);
if (stat & 0x2000000) {
pi_stat = IO_READ(PI_STATUS_REG);
while (pi_stat & (PI_STATUS_DMA_BUSY | PI_STATUS_IO_BUSY)) {
pi_stat = IO_READ(PI_STATUS_REG);
}
IO_WRITE(ASIC_BM_CTL, info->bmCtlShadow | 0x1000000);
blockInfo->errStatus = 0;
return 0;
}
if (info->cmdType == 2) {
return 1;
}
if (stat & 0x8000000) {
pi_stat = IO_READ(PI_STATUS_REG);
while (pi_stat & (PI_STATUS_DMA_BUSY | PI_STATUS_IO_BUSY)) {
pi_stat = IO_READ(PI_STATUS_REG);
}
stat = IO_READ(ASIC_STATUS);
blockInfo->errStatus = 0x16;
__osLeoResume();
IO_WRITE(PI_STATUS_REG, 2);
__OSGlobalIntMask |= 0x100401;
return 1;
}
if (info->cmdType == 1) {
if (!(stat & 0x40000000)) {
if ((info->sectorNum + 1) != (info->transferMode * 0x55)) {
blockInfo->errStatus = 0x18;
__osLeoAbnormalResume();
return 1;
}
IO_WRITE(PI_STATUS_REG, 2);
__OSGlobalIntMask |= 0x100401;
blockInfo->errStatus = 0;
__osLeoResume();
return 1;
} else {
blockInfo->dramAddr = (u8*)(blockInfo->dramAddr) + blockInfo->sectorSize;
info->sectorNum++;
__osEPiRawStartDma(__osDiskHandle, 1, ASIC_SECTOR_BUFF, blockInfo->dramAddr, blockInfo->sectorSize);
return 1;
}
} else if (info->cmdType == 0) {
if (info->transferMode == 3) {
if (((s32)blockInfo->C1ErrNum + 0x11) < info->sectorNum) {
blockInfo->errStatus = 0;
__osLeoAbnormalResume();
return 1;
}
if ((stat & 0x40000000) == 0) {
blockInfo->errStatus = 0x17;
__osLeoAbnormalResume();
return 1;
}
} else {
blockInfo->dramAddr = (u8*)(blockInfo->dramAddr) + blockInfo->sectorSize;
}
bm_stat = IO_READ(ASIC_BM_STATUS);
if (((bm_stat & 0x200000) && (bm_stat & 0x400000)) || (bm_stat & 0x2000000)) {
if (blockInfo->C1ErrNum >= 4) {
if ((info->transferMode != 3) || (info->sectorNum >= 0x53)) {
blockInfo->errStatus = 0x17;
__osLeoAbnormalResume();
return 1;
}
} else {
int errNum = blockInfo->C1ErrNum;
blockInfo->C1ErrSector[errNum] = info->sectorNum + 1;
}
blockInfo->C1ErrNum++;
}
if (stat & 0x10000000) {
if (info->sectorNum != 0x57) {
blockInfo->errStatus = 0x18;
__osLeoAbnormalResume();
return 1;
}
if ((info->transferMode == 2) && (info->blockNum == 0)) {
info->blockNum = 1;
info->sectorNum = -1;
info->block[1].dramAddr = (u8*)(info->block[1].dramAddr) - info->block[1].sectorSize;
blockInfo->errStatus = 0x16;
} else {
IO_WRITE(PI_STATUS_REG, 2);
__OSGlobalIntMask |= 0x100401;
info->cmdType = 2;
blockInfo->errStatus = 0;
}
__osEPiRawStartDma(__osDiskHandle, 0, ASIC_C2_BUFF, blockInfo->C2Addr, blockInfo->sectorSize * 4);
return 1;
}
if ((info->sectorNum == -1) && (info->transferMode == 2) && (info->blockNum == 1)) {
__OSBlockInfo* bptr = info->block;
if (bptr->C1ErrNum == 0) {
if (((u32*)bptr->C2Addr)[0] | ((u32*)bptr->C2Addr)[1] | ((u32*)bptr->C2Addr)[2] |
((u32*)bptr->C2Addr)[3]) {
bptr->errStatus = 0x17;
__osLeoAbnormalResume();
return 1;
}
}
bptr->errStatus = 0;
__osLeoResume();
}
info->sectorNum++;
if (stat & 0x40000000) {
if (info->sectorNum >= 0x55) {
blockInfo->errStatus = 0x18;
__osLeoAbnormalResume();
return 1;
}
__osEPiRawStartDma(__osDiskHandle, 0, ASIC_SECTOR_BUFF, blockInfo->dramAddr, blockInfo->sectorSize);
blockInfo->errStatus = 0;
return 1;
} else if (info->sectorNum < 0x55) {
blockInfo->errStatus = 0x18;
__osLeoAbnormalResume();
return 1;
}
return 1;
} else {
blockInfo->errStatus = 4;
__osLeoAbnormalResume();
return 1;
}
}
// static
void __osLeoAbnormalResume(void) {
__OSTranxInfo* info;
u32 pi_stat;
info = &__osDiskHandle->transferInfo;
pi_stat = IO_READ(PI_STATUS_REG);
while (pi_stat & (PI_STATUS_DMA_BUSY | PI_STATUS_IO_BUSY)) {
pi_stat = IO_READ(PI_STATUS_REG);
}
IO_WRITE(ASIC_BM_CTL, info->bmCtlShadow | 0x10000000);
pi_stat = IO_READ(PI_STATUS_REG);
while (pi_stat & (PI_STATUS_DMA_BUSY | PI_STATUS_IO_BUSY)) {
pi_stat = IO_READ(PI_STATUS_REG);
}
IO_WRITE(ASIC_BM_CTL, info->bmCtlShadow);
__osLeoResume();
IO_WRITE(PI_STATUS_REG, 2);
__OSGlobalIntMask |= 0x100401;
}
// static
void __osLeoResume(void) {
__OSEventState* es;
OSMesgQueue* mq;
s32 last;
es = &__osEventStateTab[8];
mq = es->queue;
if ((mq == 0) || (mq->validCount >= mq->msgCount)) {
return;
}
last = (mq->first + mq->validCount) % mq->msgCount;
mq->msg[last] = es->msg;
mq->validCount++;
if (mq->mtqueue->next != NULL) {
__osEnqueueThread(&__osRunQueue, __osPopThread(&mq->mtqueue));
}
}
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