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#include "ultra64.h"
#include "ultra64/leo.h"
#include "ultra64/leoappli.h"
#include "ultra64/leodrive.h"
void leoTranslate(void) {
u32 lba;
u32 calc_bytes;
u32 calc_blks;
u32 byte_p_blk;
u16 zone;
u16 vzone;
u8 flag; // boolean
if (LEOcur_command->data.readWrite.lba >= NUM_LBAS) {
LEOcur_command->header.sense = LEO_SENSE_LBA_OUT_OF_RANGE;
LEOcur_command->header.status = LEO_STATUS_CHECK_CONDITION;
return;
}
lba = LEOcur_command->data.readWrite.lba + 0x18;
calc_blks = 0;
calc_bytes = 0;
flag = vzone = 1;
if (LEOcur_command->header.control & LEO_CONTROL_TBL) {
calc_bytes = LEOcur_command->data.readWrite.transferBlks;
while (calc_bytes != 0) {
if (flag || (LEOVZONE_TBL[LEOdisk_type][vzone] == lba)) {
vzone = leoLba_to_vzone(lba);
zone = LEOVZONE_PZONEHD_TBL[LEOdisk_type][vzone];
if (zone >= 8) {
zone -= 7;
}
byte_p_blk = LEOBYTE_TBL2[zone];
}
if (calc_bytes < byte_p_blk) {
calc_bytes = 0;
} else {
calc_bytes -= byte_p_blk;
}
calc_blks++;
lba++;
if ((calc_bytes != 0) && (lba >= 0x10DC)) {
LEOcur_command->header.sense = LEO_SENSE_LBA_OUT_OF_RANGE;
LEOcur_command->header.status = LEO_STATUS_CHECK_CONDITION;
return;
}
flag = false;
}
LEOcur_command->data.readWrite.buffPtr = (void*)calc_blks;
} else {
calc_blks = LEOcur_command->data.readWrite.transferBlks;
while (calc_blks != 0) {
if (flag || (LEOVZONE_TBL[LEOdisk_type][vzone] == lba)) {
vzone = leoLba_to_vzone(lba);
zone = LEOVZONE_PZONEHD_TBL[LEOdisk_type][vzone];
if (zone >= 8) {
zone -= 7;
}
byte_p_blk = LEOBYTE_TBL2[zone];
}
calc_bytes += byte_p_blk;
calc_blks--;
lba++;
if ((calc_blks != 0) && (lba >= 0x10DC)) {
LEOcur_command->header.sense = LEO_SENSE_LBA_OUT_OF_RANGE;
LEOcur_command->header.status = LEO_STATUS_CHECK_CONDITION;
return;
}
flag = false;
}
LEOcur_command->data.readWrite.buffPtr = (void*)calc_bytes;
}
LEOcur_command->header.status = LEO_STATUS_GOOD;
}
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