ide.h

IDE接口实验 Embest Teach Kit II boot success Embest 44B0X Evaluation Board(EduKit II) IDE Test Exampl

#ifndef __IDE_H__
#define __IDE_H__


#ifdef __cplusplus
extern "C" {
#endif


#define SECTOR_BYTES	512
#define SECTOR_WORDS	(SECTOR_BYTES/2)

#define PRIMARY			0
#define SLAVE			1


#define MAKE_LBA(d, c, h, s) ( (unsigned long) \
			( ((c & 0xffff) << 16) | ((d & 0x1) << 12) \
			| ((h & 0xf) << 8) | (s & 0xff) ) )


struct DriveId
{
	unsigned short cylinders;
	unsigned short heads;
	unsigned short bytes_per_track;
	unsigned short bytes_per_sector;
	unsigned short sectors_per_track;
	unsigned short vendor_id;
	unsigned char  serial_number[20+2];
	unsigned char  firmware_version[8+2];
	unsigned char  model_number[40+2];
	unsigned short minimum_pio;
	unsigned short minimum_dma;
};


struct Sector
{
	unsigned char data[SECTOR_BYTES];
};


enum DrvErr
{
	DRV_ERR_NOERR      = 0x01,	/* No error detected. */
	DRV_ERR_FORMAT     = 0x02,	/* Formatter device error. */
	DRV_ERR_BUFFER     = 0x03,	/* Sector buffer error. */
	DRV_ERR_ECC        = 0x04,	/* ECC circuitry error. */
	DRV_ERR_CONTROLLER = 0x05,	/* Controller microprocessor error. */
	DRV_ERR_DRIVE1     = 0x80	/* 8X Drive 1 failed. */
};


#define ERR_NOERR	0x0
#define ERR_AMNF	0x1
#define ERR_TKONF	0x2
#define ERR_ABRT	0x4
#define ERR_IDNF	0x10
#define ERR_UNC		0x40
#define ERR_BBK		0x80


extern int IDE_Init(int drive);
extern unsigned int IDE_Diagnostics(int drive, enum DrvErr *err);
extern unsigned int IDE_Identification(int drive, struct DriveId *id);
extern unsigned int IDE_ReadSectors(unsigned long lba, 
		struct Sector *buf, unsigned char count);
extern unsigned int IDE_WriteSectors(unsigned long lba,
		const struct Sector *buf, unsigned char count);
extern const char* IDE_GetStatusString(unsigned long status);
extern const char* IDE_GetErrorString(enum DrvErr err);


#ifdef __cplusplus
}
#endif


#endif