ide.hh

一个mips虚拟机非常好代码,使用C++来编写的,希望大家多学学,

#ifndef ide_hh_included
#define ide_hh_included

#include <pcidevice.hh>
#include "ide_types.hh"

/* FIXME: Set these correctly !! */
#define PCI_VENDOR_ID_DEC_IDE		0x0037           ///syt---IDE //
#define PCI_DEVICE_ID_DEC_IDE	        0x0069
#define PCI_CLASS_IDE	                0x0101
//#define USER_SECTOR_NUM 0x4000 //16K//


class IDE
        : public Module, public PCIDevice, public IOListener 
{
private:
    static SerialType<IDE> type; 
    //256 words for device info //
    UInt32 dev_words[256];
    UInt16 words_counter; 
    //registers data //
    union dide_data dide_data;
    union dide_err dide_err;
    union dide_feature dide_feature;
    union dide_sectorcount dide_sectorcount;
    union dide_lbal dide_lbal;
    union dide_lbam dide_lbam;
    union dide_lbah dide_lbah;
    union dide_dev dide_dev;
    union dide_comm dide_comm;
    union dide_stat dide_stat;
    union dide_astat dide_astat;
    union dide_devcon dide_devcon;
    union bmide_comm bmide_comm;
    union bmide_stat bmide_stat;
    union bmide_dtpr bmide_dtpr;
    union idedma_descriptor idedma_descriptor;
    void do_command(UInt16 code);
    void set_interrupt();  
    void clear_interrupt(); 
    void dma_transfer();
    struct features features;
    // Configuration parameter cache.
    const char* file_name;
    ClockValue read_latency, write_latency;
    // The clock frequency for which the cached values are valid.
    ClockValue freq;
    // Actual data array.
    UInt32 size;
    UInt64* data;
    // Configuration data.
    struct {
        char* file_name;
        int size;
        int read_latency, write_latency;
    } conf;
public:
    void io_poll();
    // Constructors, etc.
    IDE(const SimArgs& args);
    IDE(Checkpoint& cp);
    ~IDE();
    // Module interfaces.
    void reset(bool warm);
    // Serialization information.
    void checkpoint(Checkpoint& cp, bool parent = false) const;
    // Device access interfaces
    ClockValue read(UInt64 addr, UInt64* buf, int size);
    ClockValue write(UInt64 addr, const UInt64* buf, int size);
    void init(Bus *bus, InterruptSink *intctrl, UInt64 base_address, UInt64 size, int base_irq);
};
#endif // ide_hh_included