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uvm_device.h revision 1.11.104.1 
      1  1.11.104.1    jruoho /*	$NetBSD: uvm_device.h,v 1.11.104.1 2011/06/06 09:10:21 jruoho Exp $	*/
      2         1.1       mrg 
      3         1.1       mrg /*
      4         1.1       mrg  * Copyright (c) 1997 Charles D. Cranor and Washington University.
      5         1.1       mrg  * All rights reserved.
      6         1.1       mrg  *
      7         1.1       mrg  * Redistribution and use in source and binary forms, with or without
      8         1.1       mrg  * modification, are permitted provided that the following conditions
      9         1.1       mrg  * are met:
     10         1.1       mrg  * 1. Redistributions of source code must retain the above copyright
     11         1.1       mrg  *    notice, this list of conditions and the following disclaimer.
     12         1.1       mrg  * 2. Redistributions in binary form must reproduce the above copyright
     13         1.1       mrg  *    notice, this list of conditions and the following disclaimer in the
     14         1.1       mrg  *    documentation and/or other materials provided with the distribution.
     15         1.1       mrg  *
     16         1.1       mrg  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17         1.1       mrg  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18         1.1       mrg  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19         1.1       mrg  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20         1.1       mrg  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21         1.1       mrg  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22         1.1       mrg  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23         1.1       mrg  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24         1.1       mrg  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25         1.1       mrg  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26         1.3       mrg  *
     27         1.3       mrg  * from: Id: uvm_device.h,v 1.1.2.2 1997/10/03 17:39:44 chuck Exp
     28         1.1       mrg  */
     29         1.1       mrg 
     30         1.4     perry #ifndef _UVM_UVM_DEVICE_H_
     31         1.4     perry #define _UVM_UVM_DEVICE_H_
     32         1.4     perry 
     33         1.1       mrg /*
     34         1.1       mrg  * uvm_device.h
     35         1.1       mrg  *
     36         1.1       mrg  * device handle into the VM system.
     37         1.1       mrg  */
     38         1.1       mrg 
     39         1.1       mrg /*
     40         1.1       mrg  * the uvm_device structure.   object is put at the top of the data structure.
     41         1.1       mrg  * this allows:
     42         1.1       mrg  *   (struct uvm_device *) == (struct uvm_object *)
     43         1.1       mrg  */
     44         1.1       mrg 
     45         1.1       mrg struct uvm_device {
     46         1.5       mrg 	struct uvm_object u_obj;	/* the actual VM object */
     47         1.5       mrg 	int u_flags;			/* flags [LOCKED BY UDV_LOCK!] */
     48         1.5       mrg 	dev_t u_device;		/* our device */
     49         1.5       mrg 	LIST_ENTRY(uvm_device) u_list; /* list of device objects */
     50         1.1       mrg };
     51         1.1       mrg 
     52         1.1       mrg /*
     53         1.1       mrg  * u_flags values
     54         1.1       mrg  */
     55         1.1       mrg 
     56         1.1       mrg #define UVM_DEVICE_HOLD		0x1	/* someone has a "hold" on it */
     57         1.1       mrg #define UVM_DEVICE_WANTED	0x2	/* someone wants to put a "hold" on */
     58         1.1       mrg 
     59         1.8   thorpej #ifdef _KERNEL
     60         1.8   thorpej 
     61         1.1       mrg /*
     62         1.1       mrg  * prototypes
     63         1.1       mrg  */
     64         1.1       mrg 
     65        1.10  junyoung struct uvm_object *udv_attach(void *, vm_prot_t, voff_t, vsize_t);
     66         1.8   thorpej 
     67         1.8   thorpej #endif /* _KERNEL */
     68         1.1       mrg 
     69         1.4     perry #endif /* _UVM_UVM_DEVICE_H_ */
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