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23 lines
638 B
C
23 lines
638 B
C
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#include "libultra_internal.h"
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#include <ultra64/hardware.h>
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s32 __osSiRawStartDma(s32 dir, void *addr) //func_801013F0
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{
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if (HW_REG(SI_STATUS_REG, u32) & (SI_STATUS_DMA_BUSY | SI_STATUS_IO_READ_BUSY)){
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return -1;
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}
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if (dir == OS_WRITE){
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osWritebackDCache(addr, 0x40);
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}
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HW_REG(SI_DRAM_ADDR_REG, void*) = (void*)osVirtualToPhysical(addr);
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if (dir == OS_READ){
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HW_REG(SI_PIF_ADDR_RD64B_REG, void*) = (void*)PIF_RAM_START;
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}else{
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HW_REG(SI_PIF_ADDR_WR64B_REG, void*) = (void*)PIF_RAM_START;
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}
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if (dir == OS_READ){
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osInvalDCache(addr, 0x40);
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}
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return 0;
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}
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