HFI1_CAP_LOCKED_SMASK
({ hfi1_cap_mask |= HFI1_CAP_LOCKED_SMASK; hfi1_cap_mask; })
#define HFI1_CAP_LOCKED() (!!(hfi1_cap_mask & HFI1_CAP_LOCKED_SMASK))
cap_mask &= ~HFI1_CAP_LOCKED_SMASK;
diff = value ^ (cap_mask & ~HFI1_CAP_LOCKED_SMASK);