/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef	_SYS_SUNLDI_H
#define	_SYS_SUNLDI_H

#pragma ident	"@(#)sunldi.h	1.7	04/06/08 SMI"

#include <sys/modctl.h>
#include <sys/stream.h>
#include <sys/open.h>

/*
 * DDI interfaces for Layered driver support.
 */

#ifdef	__cplusplus
extern "C" {
#endif

#ifdef	_KERNEL


/*
 * Opaque layered driver data structures.
 *
 * The contents of these data structures are private to this
 * implementation of Solaris and are subject to change at any
 * time without notice.
 *
 * Applications and drivers accessing the contents of these structures
 * directly will fail to run on future releases.
 */
typedef struct __ldi_ident		*ldi_ident_t;

typedef struct __ldi_handle		*ldi_handle_t;

typedef struct __ldi_callback_id	*ldi_callback_id_t;

/*
 * LDI Ident manipulation functions
 */
extern ldi_ident_t ldi_ident_from_anon(void);

extern int ldi_ident_from_mod(struct modlinkage *, ldi_ident_t *);
extern int ldi_ident_from_major(major_t major, ldi_ident_t *);
extern int ldi_ident_from_dip(dev_info_t *dip, ldi_ident_t *);
extern int ldi_ident_from_dev(dev_t, ldi_ident_t *);
extern int ldi_ident_from_stream(struct queue *, ldi_ident_t *);
extern void ldi_ident_release(ldi_ident_t);


/*
 * LDI Handle manipulation functions
 */
extern int ldi_open_by_dev(dev_t *, int, int, cred_t *,
    ldi_handle_t *, ldi_ident_t);
extern int ldi_open_by_name(char *, int, cred_t *,
    ldi_handle_t *, ldi_ident_t);
extern int ldi_open_by_devid(ddi_devid_t, char *, int, cred_t *,
    ldi_handle_t *, ldi_ident_t);

extern int ldi_close(ldi_handle_t, int flag, cred_t *);

extern int ldi_read(ldi_handle_t, struct uio *, cred_t *);
extern int ldi_write(ldi_handle_t, struct uio *, cred_t *);
extern int ldi_ioctl(ldi_handle_t, int, intptr_t, int, cred_t *, int *);
extern int ldi_poll(ldi_handle_t, short, int, short *, struct pollhead **);
extern int ldi_get_size(ldi_handle_t, uint64_t *);
extern int ldi_prop_op(ldi_handle_t, ddi_prop_op_t, int,
    char *, caddr_t, int *);

extern int ldi_get_eventcookie(ldi_handle_t, char *,
    ddi_eventcookie_t *);
extern int ldi_add_event_handler(ldi_handle_t, ddi_eventcookie_t,
    void (*handler)(ldi_handle_t, ddi_eventcookie_t, void *, void *),
    void *, ldi_callback_id_t *);
extern int ldi_remove_event_handler(ldi_handle_t, ldi_callback_id_t);

extern int ldi_strategy(ldi_handle_t, struct buf *);
extern int ldi_dump(ldi_handle_t, caddr_t, daddr_t, int);
extern int ldi_devmap(ldi_handle_t, devmap_cookie_t, offset_t,
    size_t, size_t *, uint_t);
extern int ldi_aread(ldi_handle_t, struct aio_req *, cred_t *);
extern int ldi_awrite(ldi_handle_t, struct aio_req *, cred_t *);

extern int ldi_putmsg(ldi_handle_t, mblk_t *);
extern int ldi_getmsg(ldi_handle_t, mblk_t **, timestruc_t *);

extern int ldi_prop_lookup_int_array(ldi_handle_t lh,
    uint_t flags, char *name, int **data, uint_t *nelements);
extern int ldi_prop_lookup_int64_array(ldi_handle_t lh,
    uint_t flags, char *name, int64_t **data, uint_t *nelements);
extern int ldi_prop_lookup_string_array(ldi_handle_t lh,
    uint_t flags, char *name, char ***data, uint_t *nelements);
extern int ldi_prop_lookup_string(ldi_handle_t lh,
    uint_t flags, char *name, char **data);
extern int ldi_prop_lookup_byte_array(ldi_handle_t lh,
    uint_t flags, char *name, uchar_t **data, uint_t *nelements);
extern int ldi_prop_get_int(ldi_handle_t lh,
    uint_t flags, char *name, int defvalue);
extern int64_t ldi_prop_get_int64(ldi_handle_t lh,
    uint_t flags, char *name, int64_t defvalue);
extern int ldi_prop_exists(ldi_handle_t lh,
    uint_t flags, char *name);

extern int ldi_get_dev(ldi_handle_t, dev_t *);
extern int ldi_get_otyp(ldi_handle_t, int *);
extern int ldi_get_devid(ldi_handle_t, ddi_devid_t *);
extern int ldi_get_minor_name(ldi_handle_t, char **);


#endif	/* _KERNEL */

#ifdef	__cplusplus
}
#endif

#endif	/* _SYS_SUNLDI_H */
