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 | |
39 | struct 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 | |
48 | struct sysinfo { |
49 | unsigned long totalram; |
50 | unsigned long totalhigh; |
51 | uint32_t mem_unit; |
52 | }; |
53 | |
54 | static inline void |
55 | si_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 | |
64 | static inline unsigned long |
65 | vm_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 | |
73 | static inline unsigned long |
74 | get_num_physpages(void) |
75 | { |
76 | return uvmexp.npages; |
77 | } |
78 | |
79 | #endif /* _LINUX_MM_H_ */ |
80 | |