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#include "piint.h"
#include "PR/ultraerror.h"
// TODO: this comes from a header
#ident "$Revision: 1.17 $"
s32 __osPiRawStartDma(s32 direction, u32 devAddr, void* dramAddr, u32 size) {
register u32 stat;
#ifdef _DEBUG
if ((direction != OS_READ) && (direction != OS_WRITE)) {
__osError(ERR_OSPIRAWSTARTDMA_DIR, 1, direction);
return -1;
}
if (devAddr & 0x1) {
__osError(ERR_OSPIRAWSTARTDMA_DEVADDR, 1, devAddr);
return -1;
}
if ((u32)dramAddr & 0x7) {
__osError(ERR_OSPIRAWSTARTDMA_ADDR, 1, dramAddr);
return -1;
}
if (size & 0x1) {
__osError(ERR_OSPIRAWSTARTDMA_SIZE, 1, size);
return -1;
}
if ((size == 0) || (size > (16 * 1024 * 1024))) {
__osError(ERR_OSPIRAWSTARTDMA_RANGE, 1, size);
return -1;
}
#endif
WAIT_ON_IOBUSY(stat);
IO_WRITE(PI_DRAM_ADDR_REG, osVirtualToPhysical(dramAddr));
IO_WRITE(PI_CART_ADDR_REG, K1_TO_PHYS((u32)osRomBase | devAddr));
switch (direction) {
case OS_READ:
IO_WRITE(PI_WR_LEN_REG, size - 1);
break;
case OS_WRITE:
IO_WRITE(PI_RD_LEN_REG, size - 1);
break;
default:
return -1;
}
return 0;
}
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