SLOT_ENABLE
slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
return readb(ctrl->hpc_reg + SLOT_ENABLE);
writeb(0x00, ctrl->hpc_reg + SLOT_ENABLE);
writeb(slot_power, ctrl->hpc_reg + SLOT_ENABLE);