1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2001 David E. O'Brien 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * from: @(#)param.h 5.8 (Berkeley) 6/28/91 40 * $FreeBSD$ 41 */ 42 43 #ifndef _POWERPC_INCLUDE_PARAM_H_ 44 #define _POWERPC_INCLUDE_PARAM_H_ 45 46 /* 47 * Machine dependent constants for PowerPC 48 */ 49 50 #include <machine/_align.h> 51 52 /* Needed to display interrupts on OFW PCI */ 53 #define __PCI_REROUTE_INTERRUPT 54 55 #ifndef MACHINE 56 #define MACHINE "powerpc" 57 #endif 58 #ifndef MACHINE_ARCH 59 #ifdef __powerpc64__ 60 #define MACHINE_ARCH "powerpc64" 61 #else 62 #ifdef __SPE__ 63 #define MACHINE_ARCH "powerpcspe" 64 #else 65 #define MACHINE_ARCH "powerpc" 66 #endif 67 #endif 68 #endif 69 #define MID_MACHINE MID_POWERPC 70 #ifdef __powerpc64__ 71 #ifndef MACHINE_ARCH32 72 #define MACHINE_ARCH32 "powerpc" 73 #endif 74 #endif 75 76 #ifdef SMP 77 #ifndef MAXCPU 78 #define MAXCPU 256 79 #endif 80 #else 81 #define MAXCPU 1 82 #endif 83 84 #ifndef MAXMEMDOM 85 #define MAXMEMDOM 8 86 #endif 87 88 #define ALIGNBYTES _ALIGNBYTES 89 #define ALIGN(p) _ALIGN(p) 90 /* 91 * ALIGNED_POINTER is a boolean macro that checks whether an address 92 * is valid to fetch data elements of type t from on this architecture. 93 * This does not reflect the optimal alignment, just the possibility 94 * (within reasonable limits). 95 */ 96 #define ALIGNED_POINTER(p, t) ((((uintptr_t)(p)) & (sizeof (t) - 1)) == 0) 97 98 /* 99 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 100 * architecture. It should be used with appropriate caution. 101 */ 102 #define CACHE_LINE_SHIFT 7 103 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 104 105 #define PAGE_SHIFT 12 106 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 107 #define PAGE_MASK (PAGE_SIZE - 1) 108 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 109 110 #define MAXPAGESIZES 1 /* maximum number of supported page sizes */ 111 112 #ifndef KSTACK_PAGES 113 #ifdef __powerpc64__ 114 #define KSTACK_PAGES 8 /* includes pcb */ 115 #else 116 #define KSTACK_PAGES 4 /* includes pcb */ 117 #endif 118 #endif 119 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 120 #define USPACE (kstack_pages * PAGE_SIZE) /* total size of pcb */ 121 122 /* 123 * Mach derived conversion macros 124 */ 125 #define trunc_page(x) ((x) & ~(PAGE_MASK)) 126 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 127 128 #define atop(x) ((x) >> PAGE_SHIFT) 129 #define ptoa(x) ((x) << PAGE_SHIFT) 130 131 #define powerpc_btop(x) ((x) >> PAGE_SHIFT) 132 #define powerpc_ptob(x) ((x) << PAGE_SHIFT) 133 134 #define pgtok(x) ((x) * (PAGE_SIZE / 1024UL)) 135 136 #define btoc(x) ((vm_offset_t)(((x)+PAGE_MASK)>>PAGE_SHIFT)) 137 138 #endif /* !_POWERPC_INCLUDE_PARAM_H_ */ 139