35 lines
863 B
C
35 lines
863 B
C
#include "libultra_internal.h"
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extern OSMgrArgs piMgrArgs;
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s32 osPiStartDma(OSIoMesg *mb, s32 priority, s32 direction, u32 devAddr, void *vAddr, u32 nbytes,
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OSMesgQueue *mq) {
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register s32 result;
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register OSMesgQueue *cmdQueue;
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if (!piMgrArgs.initialized) {
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return -1;
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}
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// TODO: name magic constants
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if (direction == OS_READ) {
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mb->hdr.type = 11;
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} else {
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mb->hdr.type = 12;
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}
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mb->hdr.pri = priority;
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mb->hdr.retQueue = mq;
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mb->dramAddr = vAddr;
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mb->devAddr = devAddr;
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mb->size = nbytes;
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if (priority == OS_MESG_PRI_HIGH) {
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cmdQueue = osPiGetCmdQueue();
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result = osJamMesg(cmdQueue, mb, OS_MESG_NOBLOCK);
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} else {
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cmdQueue = osPiGetCmdQueue();
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result = osSendMesg(cmdQueue, mb, OS_MESG_NOBLOCK);
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}
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return result;
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}
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