1 /* $NetBSD: mm.h,v 1.6 2015/10/18 14:03:20 jmcneill 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_MM_H_ 33 #define _LINUX_MM_H_ 34 35 #include <uvm/uvm_extern.h> 36 37 #include <asm/page.h> 38 39 struct file; 40 41 /* XXX Ugh bletch! Whattakludge! Linux's sense is reversed... */ 42 #undef PAGE_MASK 43 #define PAGE_MASK (~(PAGE_SIZE-1)) 44 45 #define PAGE_ALIGN(x) (((x) + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1)) 46 #define offset_in_page(x) ((x) & (PAGE_SIZE-1)) 47 48 struct sysinfo { 49 unsigned long totalram; 50 unsigned long totalhigh; 51 uint32_t mem_unit; 52 }; 53 54 static inline void 55 si_meminfo(struct sysinfo *si) 56 { 57 58 si->totalram = uvmexp.npages; 59 si->totalhigh = kernel_map->size >> PAGE_SHIFT; 60 si->mem_unit = PAGE_SIZE; 61 /* XXX Fill in more as needed. */ 62 } 63 64 static inline unsigned long 65 vm_mmap(struct file *file __unused, unsigned long base __unused, 66 unsigned long size __unused, unsigned long prot __unused, 67 unsigned long flags __unused, unsigned long token __unused) 68 { 69 70 return -ENODEV; 71 } 72 73 static inline unsigned long 74 get_num_physpages(void) 75 { 76 return uvmexp.npages; 77 } 78 79 #endif /* _LINUX_MM_H_ */ 80