spi_slave_gasket_adapter.h

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// -*- mode: C++; c-file-style: "virtutech-c++" -*-
 
/*
  © 2025 Intel Corporation
 
  This software and the related documents are Intel copyrighted materials, and
  your use of them is governed by the express license under which they were
  provided to you ("License"). Unless the License provides otherwise, you may
  not use, modify, copy, publish, distribute, disclose or transmit this software
  or the related documents without Intel's prior written permission.
 
  This software and the related documents are provided as is, with no express or
  implied warranties, other than those that are expressly stated in the License.
*/
 
#ifndef SIMICS_SYSTEMC_SIMICS2TLM_SPI_SLAVE_GASKET_ADAPTER_H
#define SIMICS_SYSTEMC_SIMICS2TLM_SPI_SLAVE_GASKET_ADAPTER_H
 
#include <simics/systemc/context.h>
#include <simics/systemc/iface/simulation_interface.h>
#include <simics/systemc/iface/spi_slave_interface.h>
#include <simics/systemc/simics2tlm/gasket_adapter.h>
 
namespace simics {
namespace systemc {
namespace simics2tlm {
 
class SpiSlaveGasketAdapter
    : public iface::SpiSlaveInterface,
      public GasketAdapter<iface::SpiSlaveInterface> {
  public:
    SpiSlaveGasketAdapter(SpiSlaveInterface *spi_slave,
                          iface::SimulationInterface *simulation,
                          ConnectBase *spi_master)
        : spi_slave_(spi_slave), simulation_(simulation),
          spi_master_(spi_master) {
        assert(spi_master_);
    }
    virtual void spi_request(int first, int last, const uint8 *data_ptr,
                             size_t data_length) {
        Context context(simulation_);
        spi_slave_->spi_request(first, last, data_ptr, data_length);
    }
    virtual void connect_master(conf_object_t *master, const char *port,
                                serial_peripheral_interface_flags_t flags) {
        auto *prev_master = spi_master_->get().object();
        if (prev_master) {
            SIM_LOG_INFO(3, simulation_->simics_object(), 0,
                         "disconnected from master %s",
                         SIM_object_name(prev_master));
        }
 
        ConfObjectRef obj {master};
        if (port) {
            obj.set_port_name(port);
        }
        spi_master_->set(obj);
        SIM_LOG_INFO(3, simulation_->simics_object(), 0,
                     "connected to master %s", obj.name().c_str());
 
        flags_ = flags;
    }
    virtual void disconnect_master(conf_object_t *master) {
        if (spi_master_->get().object() != master) {
            SIM_LOG_ERROR(simulation_->simics_object(), 0,
                          "can not be disconnected from master device %s",
                          SIM_object_name(master));
        } else {
            spi_master_->set(nullptr);
            flags_ = -1;
            SIM_LOG_INFO(3, simulation_->simics_object(), 0,
                         "disconnected from master %s",
                         SIM_object_name(master));
        }
    }
    simics2tlm::GasketOwner *gasket_owner() const override {
        return dynamic_cast<simics2tlm::GasketOwner *>(spi_slave_);
    }
 
    int flags() {
        if (spi_master_->get().object() == nullptr) {
            return -1;
        }
        return flags_;
    }
 
  private:
    SpiSlaveInterface *spi_slave_;
    iface::SimulationInterface *simulation_;
    ConnectBase *spi_master_;
    int flags_ {-1};
};
 
}  // namespace simics2tlm
}  // namespace systemc
}  // namespace simics
 
#endif