smmu_v3_slaveifc.hh revision 14223 
1/*
2 * Copyright (c) 2013, 2018-2019 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder.  You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Stan Czerniawski
38 */
39
40#ifndef __DEV_ARM_SMMU_V3_SLAVEIFC_HH__
41#define __DEV_ARM_SMMU_V3_SLAVEIFC_HH__
42
43#include <list>
44
45#include "dev/arm/smmu_v3_caches.hh"
46#include "dev/arm/smmu_v3_defs.hh"
47#include "dev/arm/smmu_v3_events.hh"
48#include "dev/arm/smmu_v3_ports.hh"
49#include "dev/arm/smmu_v3_proc.hh"
50#include "mem/mem_object.hh"
51#include "params/SMMUv3SlaveInterface.hh"
52
53class SMMUTranslationProcess;
54class SMMUv3;
55class SMMUSlavePort;
56
57class SMMUv3SlaveInterface : public MemObject
58{
59  protected:
60    friend class SMMUTranslationProcess;
61
62  public:
63    SMMUv3 *smmu;
64    SMMUTLB* microTLB;
65    SMMUTLB* mainTLB;
66
67    const bool microTLBEnable;
68    const bool mainTLBEnable;
69
70    SMMUSemaphore slavePortSem;
71    SMMUSemaphore microTLBSem;
72    SMMUSemaphore mainTLBSem;
73
74    const Cycles microTLBLat;
75    const Cycles mainTLBLat;
76
77    SMMUSlavePort *slavePort;
78    SMMUATSSlavePort  atsSlavePort;
79    SMMUATSMasterPort atsMasterPort;
80
81    // in bytes
82    const unsigned portWidth;
83
84    unsigned wrBufSlotsRemaining;
85    unsigned xlateSlotsRemaining;
86    unsigned pendingMemAccesses;
87
88    const bool prefetchEnable;
89    const bool prefetchReserveLastWay;
90
91    std::list<SMMUTranslationProcess *> duplicateReqs;
92    SMMUSignal duplicateReqRemoved;
93
94    std::list<SMMUTranslationProcess *> dependentReads[SMMU_MAX_TRANS_ID];
95    std::list<SMMUTranslationProcess *> dependentWrites[SMMU_MAX_TRANS_ID];
96    SMMUSignal dependentReqRemoved;
97
98    // Receiving translation requests from the master device
99    Tick recvAtomic(PacketPtr pkt);
100    bool recvTimingReq(PacketPtr pkt);
101    void schedTimingResp(PacketPtr pkt);
102
103    Tick atsSlaveRecvAtomic(PacketPtr pkt);
104    bool atsSlaveRecvTimingReq(PacketPtr pkt);
105    bool atsMasterRecvTimingResp(PacketPtr pkt);
106    void schedAtsTimingResp(PacketPtr pkt);
107
108    void scheduleDeviceRetry();
109    void sendDeviceRetry();
110    void atsSendDeviceRetry();
111
112    bool deviceNeedsRetry;
113    bool atsDeviceNeedsRetry;
114
115    SMMUDeviceRetryEvent sendDeviceRetryEvent;
116    EventWrapper<
117        SMMUv3SlaveInterface,
118        &SMMUv3SlaveInterface::atsSendDeviceRetry> atsSendDeviceRetryEvent;
119
120    Port& getPort(const std::string &name, PortID id) override;
121
122  public:
123    SMMUv3SlaveInterface(const SMMUv3SlaveInterfaceParams *p);
124
125    ~SMMUv3SlaveInterface()
126    {
127        delete microTLB;
128        delete mainTLB;
129    }
130
131    const SMMUv3SlaveInterfaceParams *
132    params() const
133    {
134        return static_cast<const SMMUv3SlaveInterfaceParams *>(_params);
135    }
136
137    DrainState drain() override;
138
139    void setSMMU(SMMUv3 *_smmu) { smmu = _smmu; }
140    void sendRange();
141};
142
143#endif /* __DEV_ARM_SMMU_V3_SLAVEIFC_HH__ */
144