RADEON_CUR_OFFSET
WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset,
WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset,
cur_lock = RREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset);
WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, cur_lock);