Home | History | Annotate | Line # | Download | only in sys
physmap.h revision 1.1 
      1 /*-
      2  * Copyright (c) 2013 The NetBSD Foundation, Inc.
      3  * All rights reserved.
      4  *
      5  * This code is derived from software contributed to The NetBSD Foundation
      6  * by Matt Thomas of 3am Software Foundry.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     20  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     27  * POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #ifndef _SYS_PHYSMAP_H_
     31 #define _SYS_PHYSMAP_H_
     32 
     33 #include <sys/types.h>
     34 
     35 typedef struct {
     36 	paddr_t ps_addr;
     37 	psize_t ps_len;
     38 } physmap_segment_t;
     39 
     40 /* typedef is in <sys/types.h> */
     41 struct physmap {
     42 	uint16_t pm_nsegs;
     43 	uint16_t pm_maxsegs;
     44 	physmap_segment_t pm_segs[0];
     45 };
     46 
     47 #ifdef _KERNEL
     48 #include <sys/uio.h>
     49 #include <uvm/uvm_extern.h>
     50 
     51 int	physmap_create_iov(physmap_t **, const struct vmspace *,
     52 	    struct iovec *, size_t);
     53 int	physmap_create_linear(physmap_t **, const struct vmspace *,
     54 	    vaddr_t, vsize_t);
     55 physmap_t *
     56 	physmap_create_pagelist(struct vm_page **, size_t);
     57 
     58 void	physmap_destroy(physmap_t *);
     59 
     60 void *	physmap_map_init(physmap_t *, size_t, vm_prot_t);
     61 size_t	physmap_map(void *, vaddr_t *);
     62 void	physmap_map_fini(void *);
     63 
     64 void	physmap_zero(physmap_t *, size_t, size_t);
     65 #endif /* _KERNEL */
     66 
     67 #endif /* _SYS_PHYSMAP_H_ */
     68