1 /* $NetBSD: vmparam.h,v 1.21 2010/11/14 13:33:22 uebayasi Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 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 _SH3_VMPARAM_H_ 33 #define _SH3_VMPARAM_H_ 34 #include <sys/queue.h> 35 36 /* 37 * We use 4K pages on the sh3/sh4. Override the PAGE_* definitions 38 * to be compile-time constants. 39 */ 40 #define PAGE_SHIFT 12 41 #define PAGE_SIZE (1 << PAGE_SHIFT) 42 #define PAGE_MASK (PAGE_SIZE - 1) 43 44 /* Virtual address map. */ 45 #define VM_MIN_ADDRESS ((vaddr_t)0) 46 #define VM_MAXUSER_ADDRESS ((vaddr_t)0x7ffff000) 47 #define VM_MAX_ADDRESS ((vaddr_t)0x7ffff000) 48 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0xc0000000) 49 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xe0000000) 50 51 /* top of stack */ 52 #define USRSTACK VM_MAXUSER_ADDRESS 53 54 /* Virtual memory resoruce limit. */ 55 #define MAXTSIZ (64 * 1024 * 1024) /* max text size */ 56 #ifndef MAXDSIZ 57 #define MAXDSIZ (512 * 1024 * 1024) /* max data size */ 58 #endif 59 #ifndef MAXSSIZ 60 #define MAXSSIZ (32 * 1024 * 1024) /* max stack size */ 61 #endif 62 63 /* initial data size limit */ 64 #ifndef DFLDSIZ 65 #define DFLDSIZ (128 * 1024 * 1024) 66 #endif 67 /* initial stack size limit */ 68 #ifndef DFLSSIZ 69 #define DFLSSIZ (2 * 1024 * 1024) 70 #endif 71 72 /* Size of user raw I/O map */ 73 #ifndef USRIOSIZE 74 #define USRIOSIZE (MAXBSIZE / PAGE_SIZE * 8) 75 #endif 76 77 #define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE) 78 79 /* Physical memory segments */ 80 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 81 82 #define sh3_round_page(x) ((((uint32_t)(x)) + PGOFSET) & ~PGOFSET) 83 #define sh3_trunc_page(x) ((uint32_t)(x) & ~PGOFSET) 84 #define sh3_btop(x) ((uint32_t)(x) >> PGSHIFT) 85 #define sh3_ptob(x) ((uint32_t)(x) << PGSHIFT) 86 #endif /* !_SH3_VMPARAM_H_ */ 87