oot/src/libultra_code_O2/__osSpRawStartDma.c

16 lines
433 B
C

#include "global.h"
s32 __osSpRawStartDma(s32 direction, void* devAddr, void* dramAddr, u32 size) {
if (__osSpDeviceBusy()) {
return -1;
}
HW_REG(SP_MEM_ADDR_REG, u32) = (u32)devAddr;
HW_REG(SP_DRAM_ADDR_REG, u32) = osVirtualToPhysical(dramAddr);
if (direction == OS_READ) {
HW_REG(SP_WR_LEN_REG, u32) = size - 1;
} else {
HW_REG(SP_RD_LEN_REG, u32) = size - 1;
}
return 0;
}