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#include "ultra64.h"
#include "global.h"
s32 osPfsIsPlug(OSMesgQueue* mq, u8* pattern) {
s32 ret = 0;
OSMesg msg;
u8 bitpattern;
OSContStatus contData[MAXCONTROLLERS];
s32 channel;
u8 bits = 0;
s32 crcErrorCount = 3;
__osSiGetAccess();
do {
__osPfsRequestData(CONT_CMD_REQUEST_STATUS);
ret = __osSiRawStartDma(OS_WRITE, &gPifMempakBuf);
osRecvMesg(mq, &msg, OS_MESG_BLOCK);
ret = __osSiRawStartDma(OS_READ, &gPifMempakBuf);
osRecvMesg(mq, &msg, OS_MESG_BLOCK);
__osPfsGetInitData(&bitpattern, &contData[0]);
for (channel = 0; channel < __osMaxControllers; channel++) {
if ((contData[channel].status & CONT_ADDR_CRC_ER) == 0) {
crcErrorCount--;
break;
}
}
if (channel == __osMaxControllers) {
crcErrorCount = 0;
}
} while (crcErrorCount > 0);
for (channel = 0; channel < __osMaxControllers; channel++) {
if ((contData[channel].errno == 0) && ((contData[channel].status & CONT_CARD_ON) != 0)) {
bits |= (1 << channel);
}
}
__osSiRelAccess();
*pattern = bits;
return ret;
}
void __osPfsRequestData(u8 poll) {
u8* bufPtr = (u8*)&gPifMempakBuf;
__OSContRequestHeader req;
s32 i;
__osContLastPoll = poll;
gPifMempakBuf.status = 1;
req.align = 0xFF;
req.txsize = 1;
req.rxsize = 3;
req.poll = poll;
req.typeh = 0xFF;
req.typel = 0xFF;
req.status = 0xFF;
req.align1 = 0xFF;
for (i = 0; i < __osMaxControllers; i++) {
*((__OSContRequestHeader*)bufPtr) = req;
bufPtr += sizeof(req);
}
*((u8*)bufPtr) = CONT_CMD_END;
}
void __osPfsGetInitData(u8* pattern, OSContStatus* contData) {
u8* bufptr;
__OSContRequestHeader req;
s32 i;
u8 bits = 0;
bufptr = (u8*)&gPifMempakBuf;
for (i = 0; i < __osMaxControllers; i++, bufptr += sizeof(req), contData++) {
req = *((__OSContRequestHeader*)bufptr);
contData->errno = ((req.rxsize & 0xC0) >> 4);
if (contData->errno) {
continue;
}
contData->type = ((req.typel << 8) | req.typeh);
contData->status = req.status;
bits |= (1 << i);
}
*pattern = bits;
}
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