1 /* $NetBSD: vmparam.h,v 1.20 2018/08/03 11:18:22 reinoud Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Jared D. McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _ARCH_USERMODE_INCLUDE_VMPARAM_H 30 #define _ARCH_USERMODE_INCLUDE_VMPARAM_H 31 32 #include <machine/pmap.h> 33 #include "opt_memsize.h" 34 35 #define __USE_TOPDOWN_VM 36 37 extern paddr_t kmem_k_start, kmem_k_end; 38 extern paddr_t kmem_kvm_start, kmem_kvm_end; 39 extern paddr_t kmem_kvm_cur_end; 40 extern paddr_t kmem_user_start, kmem_user_end; 41 42 #define VM_MIN_ADDRESS kmem_user_start 43 #define VM_MAX_ADDRESS kmem_user_end 44 #define VM_MAXUSER_ADDRESS kmem_user_end 45 #define VM_MIN_KERNEL_ADDRESS kmem_kvm_start 46 #define VM_MAX_KERNEL_ADDRESS kmem_k_end 47 48 #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 49 #define VM_PHYSSEG_MAX 1 50 #define VM_NFREELIST 1 51 #define VM_FREELIST_DEFAULT 0 52 53 #define USRSTACK VM_MAXUSER_ADDRESS 54 55 /* 56 * When an architecture has little KVA then override the default pager_map 57 * size in its block by limiting it like this: 58 * 59 * #define PAGER_MAP_DEFAULT_SIZE (8 * 1024 * 1024) 60 */ 61 62 #if defined(__i386__) 63 #define PAGE_SHIFT 12 64 #define PAGE_SIZE (1 << PAGE_SHIFT) 65 #define PAGE_MASK (PAGE_SIZE - 1) 66 #define MAXSSIZ (64 * 1024 * 1024) 67 #define MAXTSIZ (64 * 1024 * 1024) 68 #define MAXDSIZ (3U * 1024 * 1024 * 1024) 69 #define DFLSSIZ (2 * 1024 * 1024) 70 #define DFLDSIZ (256 * 1024 * 1024) 71 #elif defined(__x86_64__) 72 #define PAGE_SHIFT 12 73 #define PAGE_SIZE (1 << PAGE_SHIFT) 74 #define PAGE_MASK (PAGE_SIZE - 1) 75 #define MAXSSIZ (128 * 1024 * 1024) 76 #define MAXTSIZ (64 * 1024 * 1024) 77 #define MAXDSIZ (8L * 1024 * 1024 * 1024) 78 #define DFLSSIZ (4 * 1024 * 1024) 79 #define DFLDSIZ (256 * 1024 * 1024) 80 #elif defined(__arm__) 81 #define PAGE_SHIFT 12 82 #define PAGE_SIZE (1 << PAGE_SHIFT) 83 #define PAGE_MASK (PAGE_SIZE - 1) 84 #define MAXSSIZ (64 * 1024 * 1024) 85 #define MAXTSIZ (64 * 1024 * 1024) 86 #define MAXDSIZ (3U * 1024 * 1024 * 1024) 87 #define DFLSSIZ (2 * 1024 * 1024) 88 #define DFLDSIZ (256 * 1024 * 1024) 89 #else 90 #error "platform not supported" 91 #endif 92 93 #endif /* !_ARCH_USERMODE_INCLUDE_VMPARAM_H */ 94