lupio_ipi.hh

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#ifndef __DEV_LUPIO_LUPIO_IPI_HH__
#define __DEV_LUPIO_LUPIO_IPI_HH__
 
#include "arch/riscv/interrupts.hh"
#include "dev/io_device.hh"
#include "dev/platform.hh"
#include "params/LupioIPI.hh"
 
namespace gem5
{

 
class LupioIPI : public BasicPioDevice
{
  private:
    const ByteOrder byteOrder = ByteOrder::little;
    System *system;
    int intType;
 
    // Register map
    enum
    {
        LUPIO_IPI_MASK = 0x0,
        LUPIO_IPI_PEND = 0x4,
 
        // Max offset
        LUPIO_IPI_MAX = 0x8,
    };
 
    uint32_t nThread;
    std::vector<uint32_t> mask;
    std::vector<uint32_t> pending;

    uint64_t lupioIPIRead(const uint8_t addr, int size);
    void lupioIPIWrite(const uint8_t addr, uint64_t val64, int size);
    void lupioIPIUpdateIRQ();
 
  public:
    PARAMS(LupioIPI);
    LupioIPI(const Params &params);

    Tick read(PacketPtr pkt) override;
    Tick write(PacketPtr pkt) override;
};
 
} // namespace gem5
 
#endif // __DEV_LUPIO_LUPIO_IPI_HH