BSD_RING_BASE
{ .graphics_ver = 4, .base = BSD_RING_BASE }
REG64_IDX(RING_TIMESTAMP, BSD_RING_BASE),
REG64_IDX(RING_TIMESTAMP, BSD_RING_BASE),
REG64_IDX(RING_TIMESTAMP, BSD_RING_BASE),
.mmio_base = BSD_RING_BASE,