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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef _SYS_DKTP_FLOWCTRL_H
     28 #define	_SYS_DKTP_FLOWCTRL_H
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 #ifdef	__cplusplus
     33 extern "C" {
     34 #endif
     35 
     36 struct	flc_obj {
     37 	opaque_t		flc_data;
     38 	struct flc_objops	*flc_ops;
     39 };
     40 
     41 struct	flc_objops {
     42 	int	(*flc_init)(opaque_t, opaque_t, opaque_t, void *);
     43 	int	(*flc_free)(struct flc_obj *);
     44 	int	(*flc_enque)(opaque_t, struct buf *);
     45 	int	(*flc_deque)(opaque_t, struct buf *);
     46 	int	(*flc_start_kstat)(opaque_t, char *, int);
     47 	int	(*flc_stop_kstat)(opaque_t);
     48 	void	*flc_resv[2];
     49 };
     50 
     51 struct flc_obj *dsngl_create();
     52 struct flc_obj *dmult_create();
     53 struct flc_obj *duplx_create();
     54 struct flc_obj *adapt_create();
     55 
     56 #define	FLC_INIT(X, tgcomobjp, queobjp, lkarg) \
     57 	(*((struct flc_obj *)(X))->flc_ops->flc_init) \
     58 	(((struct flc_obj *)(X))->flc_data, (tgcomobjp), (queobjp), (lkarg))
     59 #define	FLC_FREE(X) (*((struct flc_obj *)(X))->flc_ops->flc_free) ((X))
     60 #define	FLC_ENQUE(X, bp) (*((struct flc_obj *)(X))->flc_ops->flc_enque) \
     61 	(((struct flc_obj *)(X))->flc_data, (bp))
     62 #define	FLC_DEQUE(X, bp) (*((struct flc_obj *)(X))->flc_ops->flc_deque) \
     63 	(((struct flc_obj *)(X))->flc_data, (bp))
     64 #define	FLC_START_KSTAT(X, devtype, instance) \
     65 	(*((struct flc_obj *)(X))->flc_ops->flc_start_kstat)\
     66 	(((struct flc_obj *)(X))->flc_data, (devtype), (instance))
     67 #define	FLC_STOP_KSTAT(X) (*((struct flc_obj *)(X))->flc_ops->flc_stop_kstat) \
     68 	(((struct flc_obj *)(X))->flc_data)
     69 
     70 #ifdef	__cplusplus
     71 }
     72 #endif
     73 
     74 #endif	/* _SYS_DKTP_FLOWCTRL_H */
     75