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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 (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef _SYS_SCSI_TARGETS_SMP_H
     28 #define	_SYS_SCSI_TARGETS_SMP_H
     29 
     30 #include <sys/types.h>
     31 #include <sys/scsi/scsi.h>
     32 
     33 #ifdef	__cplusplus
     34 extern "C" {
     35 #endif
     36 
     37 #if defined(_KERNEL)
     38 
     39 /*
     40  * smp_open_flag: field indicating open smp instance.
     41  *	0 = closed, 1 = shared open, 2 = exclusive open.
     42  */
     43 #define	SMP_CLOSED	0
     44 #define	SMP_SOPENED	1
     45 #define	SMP_EXOPENED	2
     46 
     47 typedef struct smp_state {
     48 	struct smp_device	*smp_sd;	/* pointer to smp_device */
     49 	kmutex_t		smp_mutex;	/* mutex */
     50 	uint32_t		smp_open_flag;	/* open flag */
     51 	kcondvar_t		smp_cv;		/* condition variable */
     52 	uint32_t		smp_busy;	/* busy */
     53 } smp_state_t;
     54 
     55 #define	SMP_ESTIMATED_NUM_DEVS	4		/* for soft-state allocation */
     56 #define	SMP_DEFAULT_RETRY_TIMES	5
     57 
     58 #define	SMP_FLAG_REQBUF		0x1
     59 #define	SMP_FLAG_RSPBUF		0x2
     60 #define	SMP_FLAG_XFER		0x4
     61 
     62 #endif /* defined(_KERNEL) */
     63 
     64 
     65 #ifdef	__cplusplus
     66 }
     67 #endif
     68 
     69 #endif	/* _SYS_SCSI_TARGETS_SMP_H */
     70