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vmalloc.h revision 1.3.4.2 
      1 /*	$NetBSD: vmalloc.h,v 1.3.4.2 2014/08/20 00:04:21 tls 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 void *
     42 vmalloc_user(unsigned long size)
     43 {
     44 	return malloc(size, M_TEMP, (M_WAITOK | M_ZERO));
     45 }
     46 
     47 static inline void *
     48 vzalloc(unsigned long size)
     49 {
     50 	return malloc(size, M_TEMP, (M_WAITOK | M_ZERO));
     51 }
     52 
     53 static inline void
     54 vfree(void *ptr)
     55 {
     56 	return free(ptr, M_TEMP);
     57 }
     58 
     59 #define	PAGE_KERNEL	0	/* XXX pgprot */
     60 
     61 static inline void *
     62 vmap(struct page **pages, unsigned npages, unsigned long flags __unused,
     63     pgprot_t prot __unused)
     64 {
     65 	vaddr_t va;
     66 
     67 	/* XXX Sleazy cast should be OK here.  */
     68 	__CTASSERT(sizeof(*pages[0]) == sizeof(struct vm_page));
     69 	va = uvm_pagermapin((struct vm_page **)pages, npages, 0);
     70 	if (va == 0)
     71 		return NULL;
     72 
     73 	return (void *)va;
     74 }
     75 
     76 static inline void
     77 vunmap(void *ptr, unsigned npages)
     78 {
     79 
     80 	uvm_pagermapout((vaddr_t)ptr, npages);
     81 }
     82 
     83 #endif  /* _LINUX_VMALLOC_H_ */
     84