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