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#include "ultra64.h"
#include "ultra64/leo.h"
#include "ultra64/leoappli.h"
#include "ultra64/leodrive.h"
extern vu16 LEOrw_flags;
void leoRead(void) {
LEOrw_flags = 0;
leoRead_common(0x18);
}
extern OSMesgQueue LEOc2ctrl_que;
void leoRead_common(unsigned int offset) {
u32 tg_lba = LEOcur_command->data.readWrite.lba;
u32 tg_blocks = LEOcur_command->data.readWrite.transferBlks;
u32 message;
u16 retry_cnt;
if ((tg_lba | tg_blocks) & 0xFFFF0000) {
goto invalid_lba;
}
tg_lba += offset;
if ((tg_lba + tg_blocks) > 0x10DC) { // Unclear what this number represents
invalid_lba:
LEOcur_command->header.sense = LEO_SENSE_LBA_OUT_OF_RANGE;
LEOcur_command->header.status = LEO_STATUS_CHECK_CONDITION;
return;
}
if (tg_blocks == 0) {
if (tg_lba >= 0x10DC) {
goto invalid_lba;
}
LEOcur_command->header.sense = LEO_SENSE_NO_ADDITIONAL_SENSE_INFOMATION;
LEOcur_command->header.status = LEO_STATUS_GOOD;
return;
}
LEOtgt_param.lba = tg_lba;
LEOrw_flags &= ~0xC000;
osSendMesg(&LEOc2ctrl_que, NULL, OS_MESG_NOBLOCK);
osStartThread(&LEOinterruptThread);
for (;;) {
osRecvMesg(&LEOcontrol_que, (OSMesg*)&message, OS_MESG_BLOCK);
switch (message) {
case 0x90000:
goto read_complete;
case 0x80000:
leoC2_Correction();
LEOrw_flags &= ~0x4000;
osSendMesg(&LEOc2ctrl_que, NULL, OS_MESG_NOBLOCK);
break;
default:
LEOcur_command->header.sense = message;
LEOcur_command->header.status = LEO_STATUS_CHECK_CONDITION;
return;
}
}
read_complete:
LEOcur_command->header.sense = LEO_SENSE_NO_ADDITIONAL_SENSE_INFOMATION;
LEOcur_command->header.status = LEO_STATUS_GOOD;
}
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