| 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 | |