mirror of https://github.com/n64decomp/sm64.git
132 lines
3.7 KiB
C
132 lines
3.7 KiB
C
#include "libultra_internal.h"
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#include "osContInternal.h"
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#include "PR/os.h"
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#include "controller.h"
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#include "PR/ique.h"
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void __osPackRequestData(u8);
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void __osContGetInitData(u8 *, OSContStatus *);
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u32 _osContInitialized = 0; // probably initialized
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#ifdef VERSION_CN
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#define CLOCK_RATE (62500000ULL * 3 / 4)
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#else
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#define CLOCK_RATE osClockRate
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#endif
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// these probably belong in EEPROMlongread or something
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u8 __osContLastCmd;
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u8 __osMaxControllers;
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OSTimer __osEepromTimer;
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OSMesgQueue __osEepromTimerQ;
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OSMesg __osEepromTimerMsg[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 * CLOCK_RATE / 1000000 > currentTime) {
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osCreateMesgQueue(&timerMesgQueue, &mesg, 1);
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osSetTimer(&timer, 500000 * CLOCK_RATE / 1000000 - currentTime, 0, &timerMesgQueue, &mesg);
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osRecvMesg(&timerMesgQueue, &mesg, OS_MESG_BLOCK);
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}
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__osMaxControllers = MAXCONTROLLERS;
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#if defined(VERSION_EU) || defined(VERSION_SH) || defined(VERSION_CN)
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__osPackRequestData(0);
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#else
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__osPackRequestData(255);
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#endif
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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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#if defined(VERSION_EU) || defined(VERSION_SH)
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__osContLastCmd = CONT_CMD_REQUEST_STATUS;
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#elif defined(VERSION_CN)
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__osContLastCmd = 0xfd;
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#else
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__osContLastCmd = CONT_CMD_RESET;
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#endif
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__osSiCreateAccessQueue();
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osCreateMesgQueue(&__osEepromTimerQ, __osEepromTimerMsg, 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 *cmdBufPtr;
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OSContPackedRequest response;
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s32 i;
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u8 sp7;
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sp7 = 0;
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cmdBufPtr = (u8 *) __osContPifRam.ramarray;
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for (i = 0; i < __osMaxControllers; i++, cmdBufPtr += sizeof(OSContPackedRequest), status++) {
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response = *(OSContPackedRequest *) cmdBufPtr;
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status->errnum = (response.rxLen & 0xc0) >> 4;
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if (status->errnum == 0) {
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status->type = response.data2 << 8 | response.data1;
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#ifdef VERSION_CN
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status->status = __osBbPakAddress[i] != NULL ? 1 : 0;
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#else
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status->status = response.data3;
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#endif
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sp7 |= 1 << i;
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}
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}
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#ifdef VERSION_CN
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if (__osBbIsBb != 0 && __osBbHackFlags != 0) {
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OSContStatus tmp;
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status -= __osMaxControllers;
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sp7 = (sp7 & ~((1 << __osBbHackFlags) | 1)) |
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((sp7 & 1) << __osBbHackFlags) |
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((sp7 & (1 << __osBbHackFlags)) >> __osBbHackFlags);
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tmp = *status;
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*status = status[__osBbHackFlags];
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status[__osBbHackFlags] = tmp;
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}
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#endif
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*bitpattern = sp7;
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}
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void __osPackRequestData(u8 command) {
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u8 *cmdBufPtr;
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OSContPackedRequest request;
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s32 i;
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#ifdef VERSION_CN
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for (i = 0; i < ARRAY_COUNT(__osContPifRam.ramarray); i++) {
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#else
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for (i = 0; i < ARRAY_COUNT(__osContPifRam.ramarray) + 1; i++) {
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#endif
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__osContPifRam.ramarray[i] = 0;
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}
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__osContPifRam.pifstatus = 1;
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cmdBufPtr = (u8 *) __osContPifRam.ramarray;
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request.padOrEnd = 255;
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request.txLen = 1;
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request.rxLen = 3;
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request.command = command;
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request.data1 = 255;
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request.data2 = 255;
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request.data3 = 255;
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request.data4 = 255;
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for (i = 0; i < __osMaxControllers; i++) {
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* (OSContPackedRequest *) cmdBufPtr = request;
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cmdBufPtr += sizeof(OSContPackedRequest);
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}
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*cmdBufPtr = 254;
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}
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