1/* $NetBSD: mm.h,v 1.6 2015/10/18 14:03:20 jmcneill Exp $ */
2
3/*-
4 * Copyright (c) 2013 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Taylor R. Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _LINUX_MM_H_
33#define _LINUX_MM_H_
34
35#include <uvm/uvm_extern.h>
36
37#include <asm/page.h>
38
39struct file;
40
41/* XXX Ugh bletch! Whattakludge! Linux's sense is reversed... */
42#undef PAGE_MASK
43#define PAGE_MASK (~(PAGE_SIZE-1))
44
45#define PAGE_ALIGN(x) (((x) + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1))
46#define offset_in_page(x) ((x) & (PAGE_SIZE-1))
47
48struct sysinfo {
49 unsigned long totalram;
50 unsigned long totalhigh;
51 uint32_t mem_unit;
52};
53
54static inline void
55si_meminfo(struct sysinfo *si)
56{
57
58 si->totalram = uvmexp.npages;
59 si->totalhigh = kernel_map->size >> PAGE_SHIFT;
60 si->mem_unit = PAGE_SIZE;
61 /* XXX Fill in more as needed. */
62}
63
64static inline unsigned long
65vm_mmap(struct file *file __unused, unsigned long base __unused,
66 unsigned long size __unused, unsigned long prot __unused,
67 unsigned long flags __unused, unsigned long token __unused)
68{
69
70 return -ENODEV;
71}
72
73static inline unsigned long
74get_num_physpages(void)
75{
76 return uvmexp.npages;
77}
78
79#endif /* _LINUX_MM_H_ */
80