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#include <libultraship.h>
#include "libultra_internal.h"
#include "controller.h"
extern s32 __osPfsGetStatus(OSMesgQueue*, s32);
void __osPackRamReadData(int channel, u16 address);
s32 __osContRamRead(OSMesgQueue* mq, int channel, u16 address, u8* buffer) {
s32 ret;
int i;
u8* ptr;
__OSContRamReadFormat ramreadformat;
int retry;
ret = 0;
ptr = (u8*) &__osPfsPifRam;
retry = 2;
__osSiGetAccess();
__osContLastCmd = CONT_CMD_READ_MEMPACK;
__osPackRamReadData(channel, address);
ret = __osSiRawStartDma(OS_WRITE, &__osPfsPifRam);
osRecvMesg(mq, NULL, OS_MESG_BLOCK);
do {
for (i = 0; i < 16; i++) {
__osPfsPifRam.ramarray[i] = 0xFF;
}
__osPfsPifRam.pifstatus = 0;
ret = __osSiRawStartDma(OS_READ, &__osPfsPifRam);
osRecvMesg(mq, NULL, OS_MESG_BLOCK);
ptr = (u8*) &__osPfsPifRam;
if (channel != 0) {
for (i = 0; i < channel; i++) {
ptr++;
}
}
ramreadformat = *(__OSContRamReadFormat*) ptr;
ret = CHNL_ERR(ramreadformat);
if (ret == 0) {
u8 c;
c = __osContDataCrc((u8*) &ramreadformat.data);
if (c != ramreadformat.datacrc) {
ret = __osPfsGetStatus(mq, channel);
if (ret != 0) {
__osSiRelAccess();
return ret;
}
ret = PFS_ERR_CONTRFAIL;
} else {
for (i = 0; i < ARRLEN(ramreadformat.data); i++) {
*buffer++ = ramreadformat.data[i];
}
}
}
if (ret != PFS_ERR_CONTRFAIL) {
break;
}
} while (retry-- >= 0);
__osSiRelAccess();
return ret;
}
void __osPackRamReadData(int channel, u16 address) {
u8* ptr;
__OSContRamReadFormat ramreadformat;
int i;
ptr = (u8*) __osPfsPifRam.ramarray;
for (i = 0; i < ARRLEN(__osPfsPifRam.ramarray) + 1; i++) { // also clear pifstatus
__osPfsPifRam.ramarray[i] = 0;
}
__osPfsPifRam.pifstatus = CONT_CMD_EXE;
ramreadformat.dummy = CONT_CMD_NOP;
ramreadformat.txsize = CONT_CMD_READ_MEMPACK_TX;
ramreadformat.rxsize = CONT_CMD_READ_MEMPACK_RX;
ramreadformat.cmd = CONT_CMD_READ_MEMPACK;
ramreadformat.address = (address << 0x5) | __osContAddressCrc(address);
ramreadformat.datacrc = CONT_CMD_NOP;
for (i = 0; i < ARRLEN(ramreadformat.data); i++) {
ramreadformat.data[i] = CONT_CMD_NOP;
}
if (channel != 0) {
for (i = 0; i < channel; i++) {
*ptr++ = 0;
}
}
*(__OSContRamReadFormat*) ptr = ramreadformat;
ptr += sizeof(__OSContRamReadFormat);
ptr[0] = CONT_CMD_END;
}
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