1/*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
6 * All rights reserved.
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 unmodified, this list of conditions, and the following
13 *    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 OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29#ifndef	_LINUX_MM_H_
30#define	_LINUX_MM_H_
31
32/*#include <linux/spinlock.h>*/
33#include <linux/page.h>
34#include <barrelfish/barrelfish.h>
35
36/** align value \a l to \a size (ceil) */
37#define __ALIGN_MASK(x,mask)    (((x)+(mask))&~(mask))
38#undef ALIGN
39#define ALIGN(x,a)              __ALIGN_MASK(x,(__typeof__(x))(a)-1)
40#define	PAGE_ALIGN(x)	ALIGN(x, BASE_PAGE_SIZE)
41/*
42 struct vm_area_struct {
43 vm_offset_t	vm_start;
44 vm_offset_t	vm_end;
45 vm_offset_t	vm_pgoff;
46 vm_paddr_t	vm_pfn;		 PFN For mmap.
47 vm_size_t	vm_len;		 length for mmap.
48 vm_memattr_t	vm_page_prot;
49 };
50
51
52 * Compute log2 of the power of two rounded up count of pages
53 * needed for size bytes.
54 */
55#define PAGE_SHIFT	12
56
57static inline int get_order(unsigned long size) {
58	int order;
59
60	size = (size - 1) >> PAGE_SHIFT;
61	order = 0;
62	while (size) {
63		order++;
64		size >>= 1;
65	}
66	return (order);
67}
68
69static inline void *
70lowmem_page_address(struct page *page) {
71
72	return page->virt_addr;
73}
74/*
75
76 * This only works via mmap ops.
77
78 static inline int
79 io_remap_pfn_range(struct vm_area_struct *vma,
80 unsigned long addr, unsigned long pfn, unsigned long size,
81 vm_memattr_t prot)
82 {
83 vma->vm_page_prot = prot;
84 vma->vm_pfn = pfn;
85 vma->vm_len = size;
86
87 return (0);
88 }*/
89
90#endif	/* _LINUX_MM_H_ */
91