GEN7_SO_WRITE_OFFSET
*cs++ = i915_mmio_reg_offset(GEN7_SO_WRITE_OFFSET(i));
REG32(GEN7_SO_WRITE_OFFSET(0)),
REG32(GEN7_SO_WRITE_OFFSET(1)),
REG32(GEN7_SO_WRITE_OFFSET(2)),
REG32(GEN7_SO_WRITE_OFFSET(3)),