FW_MAX_PHYSICAL_RANGE
.length = FW_MAX_PHYSICAL_RANGE,
{ .start = FW_MAX_PHYSICAL_RANGE, .end = 0xffffe0000000ULL, };
{ .start = 0x000000000000ULL, .end = FW_MAX_PHYSICAL_RANGE, };
reg_write(ohci, OHCI1394_PhyUpperBound, FW_MAX_PHYSICAL_RANGE >> 16);