PIPE0_ARBITRATION_CONTROL3
arb_control3 = RREG32(PIPE0_ARBITRATION_CONTROL3 + pipe_offset);
WREG32(PIPE0_ARBITRATION_CONTROL3 + pipe_offset, tmp);
tmp = RREG32(PIPE0_ARBITRATION_CONTROL3 + pipe_offset);
WREG32(PIPE0_ARBITRATION_CONTROL3 + pipe_offset, tmp);
WREG32(PIPE0_ARBITRATION_CONTROL3 + pipe_offset, arb_control3);