| /* |
| * Copyright 2019 Google, Inc. |
| * |
| * 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 |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * Authors: Gabe Black |
| */ |
| |
| #ifndef __ARCH_ARM_FASTMODEL_GIC_GIC_HH__ |
| #define __ARCH_ARM_FASTMODEL_GIC_GIC_HH__ |
| |
| #include <amba_pv.h> |
| |
| #include "arch/arm/fastmodel/amba_ports.hh" |
| #include "dev/arm/base_gic.hh" |
| #include "params/FastModelGIC.hh" |
| #include "params/SCFastModelGIC.hh" |
| #include "scx_evs_GIC.h" |
| #include "systemc/ext/core/sc_module_name.hh" |
| #include "systemc/sc_port_wrapper.hh" |
| |
| namespace FastModel |
| { |
| |
| // The fast model exports a class called scx_evs_GIC which represents |
| // the subsystem described in LISA+. This class specializes it to export gem5 |
| // ports and interface with its peer gem5 GIC. The gem5 GIC inherits from the |
| // gem5 BaseGic class and implements its API, while this class actually does |
| // the work. |
| class SCGIC : public scx_evs_GIC |
| { |
| public: |
| SCGIC(const SCFastModelGICParams ¶ms, sc_core::sc_module_name _name); |
| |
| SignalInterruptInitiatorSocket signalInterrupt; |
| |
| void |
| end_of_elaboration() override |
| { |
| scx_evs_GIC::end_of_elaboration(); |
| scx_evs_GIC::start_of_simulation(); |
| } |
| void start_of_simulation() override {} |
| }; |
| |
| // This class pairs with the one above to implement the receiving end of gem5's |
| // GIC API. It acts as an interface which passes work to the fast model GIC, |
| // and lets the fast model GIC interact with the rest of the system. |
| class GIC : public BaseGic |
| { |
| private: |
| AmbaInitiator ambaM; |
| AmbaTarget ambaS; |
| AmbaInitiator redistributorM; |
| AmbaTarget redistributorS; |
| |
| SCGIC *scGIC; |
| |
| public: |
| GIC(const FastModelGICParams ¶ms); |
| |
| Port &getPort(const std::string &if_name, |
| PortID idx=InvalidPortID) override; |
| |
| void sendInt(uint32_t num) override; |
| void clearInt(uint32_t num) override; |
| |
| void sendPPInt(uint32_t num, uint32_t cpu) override; |
| void clearPPInt(uint32_t num, uint32_t cpu) override; |
| |
| AddrRangeList getAddrRanges() const override { return AddrRangeList(); } |
| Tick read(PacketPtr pkt) override { return 0; } |
| Tick write(PacketPtr pkt) override { return 0; } |
| }; |
| |
| } // namespace FastModel |
| |
| #endif // __ARCH_ARM_FASTMODEL_GIC_GIC_HH__ |