/*     $NetBSD: scsiio.h,v 1.13 2020/05/18 09:52:30 rkujawa Exp $        */

#ifndef _SYS_SCSIIO_H_
#define _SYS_SCSIIO_H_


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

#define SENSEBUFLEN 48

typedef struct  scsireq {
        u_long  flags;          /* info about the request status and type */
        u_long  timeout;
        u_char  cmd[16];
        u_char  cmdlen;
        void *  databuf;        /* address in user space of buffer */
        u_long  datalen;        /* size of user buffer (request) */
        u_long  datalen_used;   /* size of user buffer (used)*/
        u_char  sense[SENSEBUFLEN]; /* returned sense will be in here */
        u_char  senselen;       /* sensedata request size (MAX of SENSEBUFLEN)*/
        u_char  senselen_used;  /* return value only */
        u_char  status;         /* what the scsi status was from the adapter */
        u_char  retsts;         /* the return status for the command */
        int     error;          /* error bits */
} scsireq_t;

/* bit definitions for flags */
#define SCCMD_READ              0x00000001
#define SCCMD_WRITE             0x00000002
#define SCCMD_IOV               0x00000004
#define SCCMD_ESCAPE            0x00000010
#define SCCMD_TARGET            0x00000020


/* definitions for the return status (retsts) */
#define SCCMD_OK        0x00
#define SCCMD_TIMEOUT   0x01
#define SCCMD_BUSY      0x02
#define SCCMD_SENSE     0x03
#define SCCMD_UNKNOWN   0x04

#define SCIOCCOMMAND    _IOWR('Q', 1, scsireq_t)

#define SC_DB_CMDS      0x00000001      /* show all scsi cmds and errors */
#define SC_DB_FLOW      0x00000002      /* show routines entered        */
#define SC_DB_FLOW2     0x00000004      /* show path INSIDE routines    */
#define SC_DB_DMA       0x00000008      /* show DMA segments etc        */
#define SCIOCDEBUG      _IOW('Q', 2, int)       /* from 0 to 15 */

struct  oscsi_addr {
        int     scbus;          /* -1 if wildcard */
        int     target;         /* -1 if wildcard */
        int     lun;            /* -1 if wildcard */
};

struct  scsi_addr {
        int type;       /* bus type */
#define TYPE_SCSI 0
#define TYPE_ATAPI 1
        union {
                struct oscsi_addr scsi;
                struct _atapi {
                        int atbus;  /* -1 if wildcard */
                        int drive;  /* -1 if wildcard */
                } atapi;
        } addr;
};

/*
 * SCSI device ioctls
 */

#define SCIOCIDENTIFY   _IOR('Q', 4, struct scsi_addr) /* where are you? */
#define  OSCIOCIDENTIFY _IOR('Q', 4, struct oscsi_addr)
#define SCIOCDECONFIG   _IO('Q', 5)     /* please disappear */
#define SCIOCRECONFIG   _IO('Q', 6)     /* please check again */
#define SCIOCRESET      _IO('Q', 7)     /* reset the device */

/*
 * SCSI bus ioctls
 */

/* Scan bus for new devices. */
struct scbusioscan_args {
        int     sa_target;      /* target to scan; -1 for wildcard */
        int     sa_lun;         /* lun to scan; -1 for wildcard */
};
#define SCBUSIOSCAN     _IOW('U', 0, struct scbusioscan_args)

#define SCBUSIORESET    _IO('U', 1)     /* reset SCSI bus */

struct scbusiodetach_args {
        int     sa_target;      /* target to scan; -1 for wildcard */
        int     sa_lun;         /* lun to scan; -1 for wildcard */
};
#define SCBUSIODETACH   _IOW('U', 2, struct scbusiodetach_args)

/* enable/disable device properties */
struct scbusaccel_args {
        int     sa_target;      /* target to set property on */
        int     sa_lun;         /* lun to set property on */
        int     sa_flags;       /* flags to set or clear */
};
#define SC_ACCEL_SYNC   0x01    /* enable sync mode */
#define SC_ACCEL_WIDE   0x02    /* enable wide transfers */
#define SC_ACCEL_TAGS   0x04    /* enable tagged queuing */
#define SCBUSACCEL      _IOW('U', 2, struct scbusaccel_args)

#define SCBUSIOLLSCAN   _IO('U', 3)     /* perform low-level scan */

#endif /* _SYS_SCSIIO_H_ */