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 41 static inline bool 42 is_vmalloc_addr(void *addr) 43 { 44 /* XXX Assumes vmalloc and kmalloc both use malloc(9). */ 45 return true; 46 } 47 48 static inline void * 49 vmalloc(unsigned long size) 50 { 51 return malloc(size, M_TEMP, M_WAITOK); 52 } 53 54 static inline void * 55 vmalloc_user(unsigned long size) 56 { 57 return malloc(size, M_TEMP, (M_WAITOK | M_ZERO)); 58 } 59 60 static inline void * 61 vzalloc(unsigned long size) 62 { 63 return malloc(size, M_TEMP, (M_WAITOK | M_ZERO)); 64 } 65 66 static inline void 67 vfree(void *ptr) 68 { 69 return free(ptr, M_TEMP); 70 } 71 72 #define PAGE_KERNEL 0 /* XXX pgprot */ 73 74 static inline void * 75 vmap(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 89 static inline void 90 vunmap(void *ptr, unsigned npages) 91 { 92 93 uvm_pagermapout((vaddr_t)ptr, npages); 94 } 95 96 #endif /* _LINUX_VMALLOC_H_ */ 97