/*      $NetBSD: ataio.h,v 1.9 2012/01/24 20:04:07 jakllsch Exp $       */

#ifndef _SYS_ATAIO_H_
#define _SYS_ATAIO_H_

#include <sys/types.h>
#include <sys/ioctl.h>

typedef struct  atareq {
        u_long  flags;          /* info about the request status and type */
        u_char  command;        /* command code */
        u_char  features;       /* feature modifier bits for command */
        u_char  sec_count;      /* sector count */
        u_char  sec_num;        /* sector number */
        u_char  head;           /* head number */
        u_short cylinder;       /* cylinder/lba address */

        void *  databuf;        /* Pointer to I/O data buffer */
        u_long  datalen;        /* length of data buffer */
        int     timeout;        /* Command timeout */
        u_char  retsts;         /* the return status for the command */
        u_char  error;          /* error bits */
} atareq_t;

/* bit definitions for flags */
#define ATACMD_READ             0x00000001
#define ATACMD_WRITE            0x00000002
#define ATACMD_READREG          0x00000004
#define ATACMD_LBA              0x00000008

/* definitions for the return status (retsts) */
#define ATACMD_OK       0x00
#define ATACMD_TIMEOUT  0x01
#define ATACMD_ERROR    0x02
#define ATACMD_DF       0x03

#define ATAIOCCOMMAND   _IOWR('Q', 8, atareq_t)

/*
 * ATA bus IOCTL
 */
/* Scan bus for new devices. */
struct atabusioscan_args {
        int     at_dev;         /* device to scan, -1 for wildcard */
};
#define ATABUSIOSCAN    _IOW('A', 50, struct atabusioscan_args)

#define ATABUSIORESET   _IO('A', 51) /* reset ATA bus */

struct atabusiodetach_args {
        int     at_dev;         /* device to detach; -1 for wildcard */
};
#define ATABUSIODETACH  _IOW('A', 52, struct atabusiodetach_args)


#endif /* _SYS_ATAIO_H_ */