1/* $NetBSD: vmalloc.h,v 1.4 2014/08/23 08:03:33 riastradh 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_VMALLOC_H_
33#define _LINUX_VMALLOC_H_
34
35#include <sys/malloc.h>
36
37#include <uvm/uvm_extern.h>
38
39#include <linux/mm_types.h>
40
41static inline bool
42is_vmalloc_addr(void *addr)
43{
44 /* XXX Assumes vmalloc and kmalloc both use malloc(9). */
45 return true;
46}
47
48static inline void *
49vmalloc(unsigned long size)
50{
51 return malloc(size, M_TEMP, M_WAITOK);
52}
53
54static inline void *
55vmalloc_user(unsigned long size)
56{
57 return malloc(size, M_TEMP, (M_WAITOK | M_ZERO));
58}
59
60static inline void *
61vzalloc(unsigned long size)
62{
63 return malloc(size, M_TEMP, (M_WAITOK | M_ZERO));
64}
65
66static inline void
67vfree(void *ptr)
68{
69 return free(ptr, M_TEMP);
70}
71
72#define PAGE_KERNEL 0 /* XXX pgprot */
73
74static inline void *
75vmap(struct page **pages, unsigned npages, unsigned long flags __unused,
76 pgprot_t prot __unused)
77{
78 vaddr_t va;
79
80 /* XXX Sleazy cast should be OK here. */
81 __CTASSERT(sizeof(*pages[0]) == sizeof(struct vm_page));
82 va = uvm_pagermapin((struct vm_page **)pages, npages, 0);
83 if (va == 0)
84 return NULL;
85
86 return (void *)va;
87}
88
89static inline void
90vunmap(void *ptr, unsigned npages)
91{
92
93 uvm_pagermapout((vaddr_t)ptr, npages);
94}
95
96#endif /* _LINUX_VMALLOC_H_ */
97