mm.h revision 1.3.6.3
1 1.3.6.3 skrll /* $NetBSD: mm.h,v 1.3.6.3 2015/12/27 12:10:03 skrll Exp $ */ 2 1.2 riastrad 3 1.2 riastrad /*- 4 1.2 riastrad * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 1.2 riastrad * All rights reserved. 6 1.2 riastrad * 7 1.2 riastrad * This code is derived from software contributed to The NetBSD Foundation 8 1.2 riastrad * by Taylor R. Campbell. 9 1.2 riastrad * 10 1.2 riastrad * Redistribution and use in source and binary forms, with or without 11 1.2 riastrad * modification, are permitted provided that the following conditions 12 1.2 riastrad * are met: 13 1.2 riastrad * 1. Redistributions of source code must retain the above copyright 14 1.2 riastrad * notice, this list of conditions and the following disclaimer. 15 1.2 riastrad * 2. Redistributions in binary form must reproduce the above copyright 16 1.2 riastrad * notice, this list of conditions and the following disclaimer in the 17 1.2 riastrad * documentation and/or other materials provided with the distribution. 18 1.2 riastrad * 19 1.2 riastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2 riastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2 riastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2 riastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2 riastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2 riastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2 riastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2 riastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2 riastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2 riastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2 riastrad * POSSIBILITY OF SUCH DAMAGE. 30 1.2 riastrad */ 31 1.2 riastrad 32 1.2 riastrad #ifndef _LINUX_MM_H_ 33 1.2 riastrad #define _LINUX_MM_H_ 34 1.2 riastrad 35 1.2 riastrad #include <uvm/uvm_extern.h> 36 1.3 riastrad 37 1.3 riastrad #include <asm/page.h> 38 1.2 riastrad 39 1.3.6.2 skrll struct file; 40 1.3.6.2 skrll 41 1.2 riastrad /* XXX Ugh bletch! Whattakludge! Linux's sense is reversed... */ 42 1.2 riastrad #undef PAGE_MASK 43 1.2 riastrad #define PAGE_MASK (~(PAGE_SIZE-1)) 44 1.2 riastrad 45 1.2 riastrad #define PAGE_ALIGN(x) (((x) + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1)) 46 1.2 riastrad #define offset_in_page(x) ((x) & (PAGE_SIZE-1)) 47 1.2 riastrad 48 1.3 riastrad struct sysinfo { 49 1.3 riastrad unsigned long totalram; 50 1.3 riastrad unsigned long totalhigh; 51 1.3 riastrad uint32_t mem_unit; 52 1.3 riastrad }; 53 1.3 riastrad 54 1.3 riastrad static inline void 55 1.3 riastrad si_meminfo(struct sysinfo *si) 56 1.3 riastrad { 57 1.3 riastrad 58 1.3 riastrad si->totalram = uvmexp.npages; 59 1.3 riastrad si->totalhigh = kernel_map->size >> PAGE_SHIFT; 60 1.3 riastrad si->mem_unit = PAGE_SIZE; 61 1.3 riastrad /* XXX Fill in more as needed. */ 62 1.3 riastrad } 63 1.3 riastrad 64 1.2 riastrad static inline unsigned long 65 1.3.6.2 skrll vm_mmap(struct file *file __unused, unsigned long base __unused, 66 1.3.6.2 skrll unsigned long size __unused, unsigned long prot __unused, 67 1.3.6.2 skrll unsigned long flags __unused, unsigned long token __unused) 68 1.2 riastrad { 69 1.2 riastrad 70 1.3.6.2 skrll return -ENODEV; 71 1.2 riastrad } 72 1.2 riastrad 73 1.3.6.3 skrll static inline unsigned long 74 1.3.6.3 skrll get_num_physpages(void) 75 1.3.6.3 skrll { 76 1.3.6.3 skrll return uvmexp.npages; 77 1.3.6.3 skrll } 78 1.3.6.3 skrll 79 1.2 riastrad #endif /* _LINUX_MM_H_ */ 80
Indexes created Thu Oct 02 14:10:14 GMT 2025