CG_CAC_CTRL
u32 tmp = RREG32(CG_CAC_CTRL) & TID_CNT_MASK;
reg = RREG32(CG_CAC_CTRL) & ~(TID_CNT_MASK | TID_UNIT_MASK);
WREG32(CG_CAC_CTRL, reg);
cac_window = RREG32(CG_CAC_CTRL) & CAC_WINDOW_MASK;
reg = RREG32(CG_CAC_CTRL) & ~CAC_WINDOW_MASK;
WREG32(CG_CAC_CTRL, reg);