lupio_blk.hh

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/*
 * Copyright (c) 2021 The Regents of the University of California
 * All rights reserved.
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#ifndef __DEV_LUPIO_LUPIO_BLK_HH__
#define __DEV_LUPIO_LUPIO_BLK_HH__
 
#include "debug/LupioBLK.hh"
#include "dev/dma_device.hh"
#include "dev/io_device.hh"
#include "dev/lupio/lupio_pic.hh"
#include "dev/platform.hh"
#include "dev/storage/disk_image.hh"
#include "params/LupioBLK.hh"
#include "sim/system.hh"
 
namespace gem5
{

class LupioBLK : public DmaDevice
{
  protected:
    const ByteOrder byteOrder = ByteOrder::little;
    Platform *platform;
    EventFunctionWrapper dmaEvent;
    Addr pioAddr;
    Tick pioDelay;
    Addr pioSize;
    DiskImage ℑ
    int lupioBLKIntID;
 
    void dmaEventDone();
 
  // Register map
  private:
    enum
    {
        LUPIO_BLK_CONF,
 
        LUPIO_BLK_NBLK,
        LUPIO_BLK_BLKA,
        LUPIO_BLK_MEMA,
 
        LUPIO_BLK_CTRL,
        LUPIO_BLK_STAT
    };
 
    int reqLen = 0;
    uint8_t *reqData = nullptr;
 
    uint64_t nbBlocks = 0;
    uint32_t nblk = 0;
    uint32_t lba = 0;
    Addr mem = 0;
 
    bool writeOp = false;
    bool err = false;
    bool busy = false;
    uint64_t lupioBLKRead(const uint8_t addr);
    void lupioBLKWrite(const uint8_t addr, uint64_t val64);
    void lupioBLKCmd(void);
 
  public:
    PARAMS(LupioBLK);
    LupioBLK(const Params &params);

    AddrRangeList getAddrRanges() const override;
    Tick read(PacketPtr pkt) override;
    Tick write(PacketPtr pkt) override;
};
 
} // namespace gem5
 
#endif // __DEV_LUPIO_LUPIO_BLK_HH_