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#include "ultra64.h"
#include "ultra64/leo.h"
#include "ultra64/leoappli.h"
#include "ultra64/leodrive.h"
extern vu16 LEOrw_flags;
extern u8 LEOC2_Syndrome[2][0xE8 * 4];
extern OSIoMesg LEOPiDmaParam;
extern block_param_form LEOc2_param;
u8 LEOc2ctrl_que_buf[8];
OSMesgQueue LEOc2ctrl_que;
u32 read_write_track(void);
u32 leoChk_mecha_int(void);
void leosetup_BM(void);
u32 leochk_err_reg(void);
void leointerrupt(void* arg) {
u32 result;
u32 tg_blocks;
osCreateMesgQueue(&LEOc2ctrl_que, (OSMesg*)&LEOc2ctrl_que_buf, 1);
while (true) {
osStopThread(&LEOinterruptThread);
tg_blocks = LEOcur_command->data.readWrite.transferBlks;
LEOwrite_pointer = LEOcur_command->data.readWrite.buffPtr;
do {
leoLba_to_phys(LEOtgt_param.lba);
if (LEOrw_flags & 0x8000) {
result = leoSeek_i(1);
} else {
result = leoSeek_i(0);
}
if (result != 0) {
goto complete;
}
if (LEOrw_flags & 0x2000) {
LEOtgt_param.rdwr_blocks = 1;
} else if (LEOtgt_param.rdwr_blocks > tg_blocks) {
LEOtgt_param.rdwr_blocks = tg_blocks;
}
LEOtgt_param.lba += LEOtgt_param.rdwr_blocks;
tg_blocks -= LEOtgt_param.rdwr_blocks;
result = read_write_track();
if (result != 0) {
goto complete;
}
LEOcur_command->data.readWrite.rwBytes = LEOwrite_pointer - (u8*)LEOcur_command->data.readWrite.buffPtr;
} while (tg_blocks != 0);
result = 0x90000; // Inaccessible?
complete:
osSendMesg(&LEOcontrol_que, (OSMesg)result, OS_MESG_BLOCK);
}
}
// static
u32 read_write_track(void) {
u32 message;
u32 block;
u32 retry_cntr;
block_param_form block_param;
block_param.bytes = LEOtgt_param.sec_bytes;
block_param.blkbytes = LEOtgt_param.blk_bytes;
if (LEOrw_flags & 0x2000) {
// Sector Mode
block_param.blkbytes = block_param.bytes;
}
block_param.pntr = LEOwrite_pointer;
LEOwrite_pointer += block_param.blkbytes;
if (LEOtgt_param.rdwr_blocks == 2) {
LEOwrite_pointer += block_param.blkbytes;
}
retry_cntr = 0;
for (;;) {
LEOPiInfo->transferInfo.transferMode = 1;
LEOPiInfo->transferInfo.blockNum = 0;
LEOPiInfo->transferInfo.block[0].C1ErrNum = 0;
LEOPiInfo->transferInfo.block[0].sectorSize = block_param.bytes;
LEOPiInfo->transferInfo.block[0].dramAddr = block_param.pntr;
LEOPiInfo->transferInfo.block[0].C2Addr = &LEOC2_Syndrome[0];
if (LEOrw_flags & 0x2000) {
// Sector Mode
LEOtgt_param.rdwr_blocks = 1;
LEOPiInfo->transferInfo.transferMode = 3;
} else if (LEOtgt_param.rdwr_blocks == 2) {
LEOPiInfo->transferInfo.transferMode = 2;
LEOPiInfo->transferInfo.block[1] = LEOPiInfo->transferInfo.block[0];
LEOPiInfo->transferInfo.block[1].C2Addr = &LEOC2_Syndrome[1];
LEOPiInfo->transferInfo.block[1].dramAddr =
((u8*)LEOPiInfo->transferInfo.block[1].dramAddr + block_param.blkbytes);
}
message = leoChk_mecha_int();
if (message == 0) {
if (LEOrw_flags & 0x8000) {
// Write Mode
leoSet_mseq(1);
} else {
// Read Mode
leoSet_mseq(0);
}
leosetup_BM();
LEOPiInfo->transferInfo.bmCtlShadow = LEOasic_bm_ctl_shadow;
LEOPiInfo->transferInfo.seqCtlShadow = LEOasic_seq_ctl_shadow;
if (LEOrw_flags & 0x8000) {
u16 bnum;
LEOPiInfo->transferInfo.cmdType = 1;
osWritebackDCache(block_param.pntr, block_param.blkbytes * LEOtgt_param.rdwr_blocks);
osEPiStartDma(LEOPiInfo, &LEOPiDmaParam, 1);
osRecvMesg(&LEOdma_que, NULL, OS_MESG_BLOCK);
LEOasic_bm_ctl_shadow = LEOPiInfo->transferInfo.bmCtlShadow;
LEOasic_seq_ctl_shadow = LEOPiInfo->transferInfo.seqCtlShadow;
bnum = LEOPiInfo->transferInfo.blockNum;
message = LEOPiInfo->transferInfo.block[bnum].errStatus;
if (message == 0) {
return message;
}
goto track_end;
} else {
if (LEOrw_flags & 0x4000) {
osRecvMesg(&LEOc2ctrl_que, NULL, OS_MESG_BLOCK);
osSendMesg(&LEOc2ctrl_que, NULL, OS_MESG_NOBLOCK);
}
LEOPiInfo->transferInfo.cmdType = 0;
osInvalDCache(block_param.pntr, block_param.blkbytes * LEOtgt_param.rdwr_blocks);
osEPiStartDma(LEOPiInfo, &LEOPiDmaParam, 0);
block = 0;
while (LEOtgt_param.rdwr_blocks != 0) {
osRecvMesg(&LEOdma_que, NULL, OS_MESG_BLOCK);
LEOasic_bm_ctl_shadow = LEOPiInfo->transferInfo.bmCtlShadow;
LEOasic_seq_ctl_shadow = LEOPiInfo->transferInfo.seqCtlShadow;
message = LEOPiInfo->transferInfo.block[block].errStatus;
if (message != 0) {
goto track_end;
}
if (LEOrw_flags & 0x2000) {
return 0;
}
if (LEOPiInfo->transferInfo.block[block].C1ErrNum) {
if (LEOPiInfo->transferInfo.block[block].C1ErrSector[0] < 0x55) {
u8* temp;
u32 c2datasize;
if (LEOtgt_param.rdwr_blocks == 1) {
osEPiReadIo(LEOPiInfo, ASIC_ERR_SECTOR, &message);
if (message & 0x10000000) {
message = 4;
goto track_end;
}
}
if (block == 0) {
temp = LEOC2_Syndrome[0];
} else {
temp = LEOC2_Syndrome[1];
}
c2datasize = block_param.bytes * 4;
block_param.c2buff_e = temp + c2datasize;
osInvalDCache(temp, c2datasize);
block_param.err_num = LEOPiInfo->transferInfo.block[block].C1ErrNum;
block_param.err_pos[0] = LEOPiInfo->transferInfo.block[block].C1ErrSector[0];
block_param.err_pos[1] = LEOPiInfo->transferInfo.block[block].C1ErrSector[1];
block_param.err_pos[2] = LEOPiInfo->transferInfo.block[block].C1ErrSector[2];
block_param.err_pos[3] = LEOPiInfo->transferInfo.block[block].C1ErrSector[3];
osRecvMesg(&LEOc2ctrl_que, NULL, OS_MESG_BLOCK);
LEOrw_flags |= 0x4000;
LEOc2_param = block_param;
osSendMesg(&LEOcontrol_que, (OSMesg)0x80000, OS_MESG_BLOCK);
}
} else {
if (LEOtgt_param.rdwr_blocks == 1) {
if ((*(u32*)&LEOC2_Syndrome[block][0x00] | *(u32*)&LEOC2_Syndrome[block][0x04] |
*(u32*)&LEOC2_Syndrome[block][0x08] | *(u32*)&LEOC2_Syndrome[block][0x0C]) != 0) {
message = 0x17;
goto track_end;
}
}
}
block++;
block_param.pntr += block_param.blkbytes;
LEOtgt_param.start_block ^= 1;
LEOtgt_param.rdwr_blocks--;
}
}
return 0;
}
track_end:
if (message == 0x16) {
message = leochk_err_reg();
}
do_retry:
if (leoChk_err_retry(message) || (LEOrw_flags & 0x1000) || retry_cntr++ == 0x40) {
break;
}
if ((retry_cntr & 7) == 0) {
message = leoSend_asic_cmd_w(0x30001, 0);
if (message != 0) {
goto do_retry;
}
}
if (message == 0x18 || (message == 0x17 && retry_cntr == 0x20)) {
message = leoDetect_index_w();
if (message != 0) {
goto do_retry;
}
}
if (LEOrw_flags & 0x8000) {
message = leoSeek_i(1);
} else {
message = leoSeek_i(0);
}
if (message != 0) {
goto do_retry;
}
}
return message;
}
// static
u32 leoChk_mecha_int(void) {
u32 stat = leoWait_mecha_cmd_done(0x10001);
u32 index_stat;
if (stat == 0) {
osEPiReadIo(LEOPiInfo, ASIC_CUR_TK, &index_stat);
if ((index_stat & 0x60000000) != 0x60000000) {
stat = 0x18;
}
}
return stat;
}
// static
void leosetup_BM(void) {
osEPiWriteIo(LEOPiInfo, ASIC_BM_CTL, LEOasic_bm_ctl_shadow | 0x10000000);
osEPiWriteIo(LEOPiInfo, ASIC_BM_CTL, LEOasic_bm_ctl_shadow);
if (LEOtgt_param.start_block != 0) {
LEOasic_bm_ctl_shadow = 0x5A0000;
} else {
LEOasic_bm_ctl_shadow = 0;
}
if (!(LEOrw_flags & 0x8000)) {
LEOasic_bm_ctl_shadow |= 0x40000000;
}
if (LEOtgt_param.rdwr_blocks == 2) {
LEOasic_bm_ctl_shadow |= 0x02000000;
}
osEPiWriteIo(LEOPiInfo, ASIC_BM_CTL, LEOasic_bm_ctl_shadow);
}
// static
u32 leochk_err_reg(void) {
u32 sense;
u32 index_status;
osEPiReadIo(LEOPiInfo, ASIC_ERR_SECTOR, &sense);
osEPiWriteIo(LEOPiInfo, ASIC_BM_CTL, LEOasic_bm_ctl_shadow | 0x10000000);
osEPiWriteIo(LEOPiInfo, ASIC_BM_CTL, LEOasic_bm_ctl_shadow);
if (sense & 0x04000000) {
return LEO_ERROR_EJECTED_ILLEGALLY_RESUME;
}
if (sense & 0x10000000) {
return LEO_ERROR_DATA_PHASE_ERROR;
}
if (sense & (0x40000000 | 0x2000000)) {
if (LEOrw_flags & 0x8000) {
return LEO_ERROR_WRITE_FAULT;
}
return LEO_ERROR_UNRECOVERED_READ_ERROR;
}
if (sense & 0x80000000) {
return LEO_ERROR_NO_REFERENCE_POSITION_FOUND;
}
osEPiReadIo(LEOPiInfo, ASIC_CUR_TK, &index_status);
if ((index_status & 0x60000000) == 0x60000000) {
return LEO_ERROR_TRACK_FOLLOWING_ERROR;
}
return LEO_ERROR_NO_REFERENCE_POSITION_FOUND;
}
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