| /* | 
 |  * Copyright (c) 2018 ARM Limited | 
 |  * All rights reserved | 
 |  * | 
 |  * The license below extends only to copyright in the software and shall | 
 |  * not be construed as granting a license to any other intellectual | 
 |  * property including but not limited to intellectual property relating | 
 |  * to a hardware implementation of the functionality of the software | 
 |  * licensed hereunder.  You may use the software subject to the license | 
 |  * terms below provided that you ensure that this notice is replicated | 
 |  * unmodified and in its entirety in all distributions of the software, | 
 |  * modified or unmodified, in source code or in binary form. | 
 |  * | 
 |  * Redistribution and use in source and binary forms, with or without | 
 |  * modification, are permitted provided that the following conditions are | 
 |  * met: redistributions of source code must retain the above copyright | 
 |  * notice, this list of conditions and the following disclaimer; | 
 |  * redistributions in binary form must reproduce the above copyright | 
 |  * notice, this list of conditions and the following disclaimer in the | 
 |  * documentation and/or other materials provided with the distribution; | 
 |  * neither the name of the copyright holders nor the names of its | 
 |  * contributors may be used to endorse or promote products derived from | 
 |  * this software without specific prior written permission. | 
 |  * | 
 |  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 
 |  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 
 |  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 
 |  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 
 |  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 
 |  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 
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 |  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 
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 |  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 
 |  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 
 |  */ | 
 |  | 
 | #ifndef __MEM_QOS_TURNAROUND_POLICY_IDEAL_HH_ | 
 | #define __MEM_QOS_TURNAROUND_POLICY_IDEAL_HH_ | 
 |  | 
 | #include "base/compiler.hh" | 
 | #include "mem/qos/turnaround_policy.hh" | 
 |  | 
 | namespace gem5 | 
 | { | 
 |  | 
 | namespace memory | 
 | { | 
 |  | 
 | GEM5_DEPRECATED_NAMESPACE(QoS, qos); | 
 | namespace qos | 
 | { | 
 |  | 
 | /** | 
 |  * Ideal QoS Bus Turnaround policy | 
 |  * | 
 |  * Selects bus state based purely on highest QoS priority | 
 |  * queue with at least one packet. Tie breaks across read | 
 |  * and write queues are resolved by selecting current bus | 
 |  * state. | 
 |  */ | 
 | class TurnaroundPolicyIdeal: public TurnaroundPolicy | 
 | { | 
 |   public: | 
 |     TurnaroundPolicyIdeal(const Params &); | 
 |  | 
 |     virtual ~TurnaroundPolicyIdeal(); | 
 |  | 
 |     /** | 
 |      * Bus Selection function. | 
 |      * | 
 |      * @return selected bus state | 
 |      */ | 
 |     virtual MemCtrl::BusState selectBusState() override; | 
 | }; | 
 |  | 
 | } // namespace qos | 
 | } // namespace memory | 
 | } // namespace gem5 | 
 |  | 
 | #endif /* __MEM_QOS_TURNAROUND_POLICY_IDEAL_HH_ */ |