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      1 /*	$NetBSD: pud_sys.h,v 1.1 2007/11/20 18:47:06 pooka Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2007  Antti Kantee.  All Rights Reserved.
      5  *
      6  * Development of this software was supported by the
      7  * Research Foundation of Helsinki University of Technology
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     19  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     21  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  */
     30 
     31 #ifndef _DEV_PUD_PUDSYS_H_
     32 #define _DEV_PUD_PUDSYS_H_
     33 
     34 #include <dev/putter/putter_sys.h>
     35 
     36 #include <dev/pud/pud_msgif.h>
     37 
     38 struct pud_touser {
     39 	struct pud_req		*pt_pdr;
     40 
     41 	kcondvar_t		pt_cv;
     42 	TAILQ_ENTRY(pud_touser)	pt_entries;
     43 };
     44 
     45 struct pud_dev {
     46 	dev_t			pd_dev;
     47 	struct putter_instance	*pd_pi;
     48 
     49 	kmutex_t		pd_mtx;
     50 
     51 	TAILQ_HEAD(,pud_touser)	pd_waitq_req;
     52 	TAILQ_HEAD(,pud_touser)	pd_waitq_resp;
     53 	kcondvar_t		pd_waitq_req_cv;
     54 	size_t			pd_waitcount;
     55 
     56 	kcondvar_t		pd_draincv;
     57 
     58 	LIST_ENTRY(pud_dev)	pd_entries;
     59 
     60 	uint64_t		pd_nextreq;
     61 };
     62 
     63 int		pud_config(int, int, int);
     64 int		pud_request(dev_t, void *, size_t, int, int);
     65 
     66 struct pud_dev	*pud_dev2pud(dev_t);
     67 
     68 #endif /* _DEV_PUD_PUDSYS_H_ */
     69