ide_types.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,

/* the endian format need to be cleared and identified,  */

#ifndef _IDE_DEVICE_TYPES_H_
#define _IDE_DEVICE_TYPES_H_

#define MAXFEATURE 50
struct dide_data_s{
#if BYTE_ORDER == LITTLE_ENDIAN
#else
#endif
};

union dide_data{
	struct dide_data_s r;
	UInt16 data;
};

struct dide_err_s{
#if BYTE_ORDER == LITTLE_ENDIAN
	UInt8 padding0 : 1;
	UInt8 nm : 1;
	UInt8 abrt : 1;
	UInt8 mcr : 1;
	UInt8 idnf : 1;
	UInt8 mc : 1;
	UInt8 unc : 1;
	UInt8 icrc : 1;
#else
	UInt8 icrc : 1;
	UInt8 unc : 1;
	UInt8 mc : 1;
	UInt8 idnf : 1;
	UInt8 mcr : 1;
	UInt8 abrt : 1;
	UInt8 nm : 1;
#endif
};

union dide_err{
	struct dide_err_s r;
	UInt8 data;
};

struct dide_feature_s{
#if BYTE_ORDER == LITTLE_ENDIAN
#else
#endif
};

union dide_feature{
	struct dide_feature_s r;
	UInt8 data;
};

struct dide_sectorcount_s{
#if BYTE_ORDER == LITTLE_ENDIAN
#else
#endif
};

union dide_sectorcount{
	struct dide_sectorcount_s r;
	UInt8 data;
};

struct dide_lbal_s{
#if BYTE_ORDER == LITTLE_ENDIAN
#else
#endif
};

union dide_lbal{
	struct dide_lbal_s r;
	UInt8 data;
};

struct dide_lbam_s{
#if BYTE_ORDER == LITTLE_ENDIAN
#else
#endif
};

union dide_lbam{
	struct dide_lbam_s r;
	UInt8 data;
};

struct dide_lbah_s{
#if BYTE_ORDER == LITTLE_ENDIAN
#else
#endif
};

union dide_lbah{
	struct dide_lbah_s r;
	UInt8 data;
};

struct dide_dev_s{
#if BYTE_ORDER == LITTLE_ENDIAN
	UInt8 sector_hi : 4;
	UInt8 dev : 1;
	UInt8 padding0 : 1;
	UInt8 lba : 1;
#else
	UInt8 padding0 : 1;
	UInt8 lba : 1;
	UInt8 padding1 : 1;
	UInt8 dev : 1;
	UInt8 sector_hi : 4;
#endif
};

union dide_dev{
	struct dide_dev_s r;
	UInt8 data;
};

struct dide_comm_s{
#if BYTE_ORDER == LITTLE_ENDIAN
#else
#endif
};

union dide_comm{
	struct dide_comm_s r;
	UInt8 data;
};

struct dide_stat_s{
#if BYTE_ORDER == LITTLE_ENDIAN
	UInt8 err : 1;
	UInt8 padding0 : 2;
	UInt8 drq : 1;
	UInt8 padding1 : 1;
	UInt8 df : 1;
	UInt8 drdy : 1;
	UInt8 bsy : 1;
#else
	UInt8 bsy : 1;
	UInt8 drdy : 1;
	UInt8 df : 1;
	UInt8 padding0 : 1;
	UInt8 drq : 1;
	UInt8 padding1 : 2;
	UInt8 err : 1;
#endif
};

union dide_stat{
	struct dide_stat_s r;
	UInt8 data;
};

struct dide_astat_s{
#if BYTE_ORDER == LITTLE_ENDIAN
	UInt8 err : 1;
	UInt8 padding0 : 2;
	UInt8 drq : 1;
	UInt8 padding1 : 1;
	UInt8 df : 1;
	UInt8 drdy : 1;
	UInt8 bsy : 1;
#else
	UInt8 bsy : 1;
	UInt8 drdy : 1;
	UInt8 df : 1;
	UInt8 padding0 : 1;
	UInt8 drq : 1;
	UInt8 padding1 : 2;
	UInt8 err : 1;
#endif
};

union dide_astat{
	struct dide_astat_s r;
	UInt8 data;
};

struct dide_devcon_s{
#if BYTE_ORDER == LITTLE_ENDIAN
	UInt8 padding0 : 1;
	UInt8 nien : 1;
	UInt8 srst : 1;
	UInt8 padding1 : 4;
	UInt8 hob : 1;
#else
	UInt8 hob : 1;
	UInt8 padding0 : 4;
	UInt8 srst : 1;
	UInt8 nien : 1;
#endif
};

union dide_devcon{
	struct dide_devcon_s r;
	UInt8 data;
};

struct bmide_comm_s{
#if BYTE_ORDER == LITTLE_ENDIAN
	UInt8 start_stop : 1;
	UInt8 padding0 : 2;
	UInt8 read_write : 1;
#else
	UInt8 padding0 : 4;
	UInt8 read_write : 1;
	UInt8 padding1 : 2;
	UInt8 start_stop : 1;
#endif
};

union bmide_comm{
	struct bmide_comm_s r;
	UInt8 data;
};

struct bmide_stat_s{
#if BYTE_ORDER == LITTLE_ENDIAN
	UInt8 active : 1;
	UInt8 error : 1;
	UInt8 interrupt : 1;
	UInt8 padding0 : 2;
	UInt8 capable0 : 1;
	UInt8 capable1 : 1;
	UInt8 simplexonly : 1;
#else
	UInt8 simplexonly : 1;
	UInt8 capable1 : 1;
	UInt8 capable0 : 1;
	UInt8 padding0 : 2;
	UInt8 interrupt : 1;
	UInt8 error : 1;
	UInt8 active : 1;
#endif
};

union bmide_stat{
	struct bmide_stat_s r;
	UInt8 data;
};

struct bmide_dtpr_s{
#if BYTE_ORDER == LITTLE_ENDIAN
	UInt32 padding0 : 2;
	UInt32 baseaddr : 30;
#else
	UInt32 baseaddr : 30;
#endif
};

union bmide_dtpr{
	struct bmide_dtpr_s r;
	UInt32 data;
};


/*for featres set */
struct features 
    {
    	UInt8 com[MAXFEATURE];
	UInt8 subcom[MAXFEATURE];
	UInt8 c;
    };
 
//for PRD descriptor struct    
struct idedma_descriptor_t {
      UInt64 mem_paddr : 32;
      UInt64 mbyte_count : 16;
      UInt64 padding0 : 15;
      UInt64 eot : 1;
    };
   union idedma_descriptor {
    struct idedma_descriptor_t r;
    UInt64 data;
  };

#endif //_IDE_DEVICE_TYPES_H_