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https://github.com/n64decomp/mk64
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github-actions[bot]
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
#include "libultra_internal.h"
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#include "controller.h"
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void __osPackRequestData(u8);
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void __osContGetInitData(u8*, OSContStatus*);
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u32 _osContInitialized = 0;
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extern u64 osClockRate;
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// these probably belong in EEPROMlongread or something
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ALIGNED16 OSPifRam __osContPifRam;
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u8 __osContLastCmd;
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u8 _osContNumControllers;
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OSTimer D_80196548;
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OSMesgQueue _osContMesgQueue;
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OSMesg _osContMesgBuff[4];
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s32 osContInit(OSMesgQueue* mq, u8* bitpattern, OSContStatus* status) {
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OSMesg mesg;
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u32 ret = 0;
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OSTime currentTime;
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OSTimer timer;
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OSMesgQueue timerMesgQueue;
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if (_osContInitialized) {
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return 0;
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}
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_osContInitialized = 1;
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currentTime = osGetTime();
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if (500000 * osClockRate / 1000000 > currentTime) {
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osCreateMesgQueue(&timerMesgQueue, &mesg, 1);
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osSetTimer(&timer, 500000 * osClockRate / 1000000 - currentTime, 0, &timerMesgQueue, &mesg);
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osRecvMesg(&timerMesgQueue, &mesg, OS_MESG_BLOCK);
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}
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//! @todo figure out what it means
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_osContNumControllers = 4;
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__osPackRequestData(0);
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ret = __osSiRawStartDma(OS_WRITE, __osContPifRam.ramarray);
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osRecvMesg(mq, &mesg, OS_MESG_BLOCK);
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ret = __osSiRawStartDma(OS_READ, __osContPifRam.ramarray);
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osRecvMesg(mq, &mesg, OS_MESG_BLOCK);
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__osContGetInitData(bitpattern, status);
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__osContLastCmd = 0;
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__osSiCreateAccessQueue();
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osCreateMesgQueue(&_osContMesgQueue, _osContMesgBuff, 1);
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return ret;
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}
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void __osContGetInitData(u8* bitpattern, OSContStatus* status) {
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u8* ptr;
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__OSContRequesFormat response;
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s32 i;
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u8 bits;
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bits = 0;
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ptr = (u8*) __osContPifRam.ramarray;
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for (i = 0; i < _osContNumControllers; i++, ptr += sizeof(response), status++) {
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response = *((__OSContRequesFormat*) (ptr));
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status->errnum = CHNL_ERR(response);
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if (status->errnum == 0) {
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status->type = response.typel << 8 | response.typeh;
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status->status = response.status;
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bits |= 1 << i;
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}
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}
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*bitpattern = bits;
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}
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void __osPackRequestData(u8 command) {
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u8* ptr;
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__OSContRequesFormat requestHeader;
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s32 i;
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for (i = 0; i < ARRLEN(__osContPifRam.ramarray) + 1; i++) {
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__osContPifRam.ramarray[i] = 0;
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}
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__osContPifRam.pifstatus = CONT_CMD_EXE;
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ptr = (u8*) __osContPifRam.ramarray;
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requestHeader.dummy = CONT_CMD_NOP;
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requestHeader.txsize = CONT_CMD_RESET_TX;
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requestHeader.rxsize = CONT_CMD_RESET_RX;
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requestHeader.cmd = command;
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requestHeader.typeh = CONT_CMD_NOP;
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requestHeader.typel = CONT_CMD_NOP;
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requestHeader.status = CONT_CMD_NOP;
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requestHeader.dummy1 = CONT_CMD_NOP;
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for (i = 0; i < _osContNumControllers; i++) {
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*(__OSContRequesFormat*) ptr = requestHeader;
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ptr += sizeof(requestHeader);
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}
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*ptr = CONT_CMD_END;
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}
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