1 /*- 2 * Copyright (c) 2001 David E. O'Brien 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * William Jolitz. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: @(#)param.h 5.8 (Berkeley) 6/28/91 38 * $FreeBSD$ 39 */ 40 41 #ifndef _POWERPC_INCLUDE_PARAM_H_ 42 #define _POWERPC_INCLUDE_PARAM_H_ 43 44 /* 45 * Machine dependent constants for PowerPC (32-bit only currently) 46 */ 47 48 #include <machine/_align.h> 49 50 /* Needed to display interrupts on OFW PCI */ 51 #define __PCI_REROUTE_INTERRUPT 52 53 #ifndef MACHINE 54 #define MACHINE "powerpc" 55 #endif 56 #ifndef MACHINE_ARCH 57 #define MACHINE_ARCH "powerpc" 58 #endif 59 #define MID_MACHINE MID_POWERPC 60 61 #if defined(SMP) || defined(KLD_MODULE) 62 #define MAXCPU 2 63 #else 64 #define MAXCPU 1 65 #endif /* SMP || KLD_MODULE */ 66 67 #define ALIGNBYTES _ALIGNBYTES 68 #define ALIGN(p) _ALIGN(p) 69 /* 70 * ALIGNED_POINTER is a boolean macro that checks whether an address 71 * is valid to fetch data elements of type t from on this architecture. 72 * This does not reflect the optimal alignment, just the possibility 73 * (within reasonable limits). 74 */ 75 #define ALIGNED_POINTER(p, t) ((((unsigned)(p)) & (sizeof (t) - 1)) == 0) 76 77 /* 78 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 79 * architecture. It should be used with appropriate caution. 80 */ 81 #define CACHE_LINE_SHIFT 7 82 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 83 84 #define PAGE_SHIFT 12 85 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 86 #define PAGE_MASK (PAGE_SIZE - 1) 87 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 88 89 #define MAXPAGESIZES 1 /* maximum number of supported page sizes */ 90 91 #ifndef KSTACK_PAGES 92 #define KSTACK_PAGES 4 /* includes pcb */ 93 #endif 94 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 95 #define USPACE (KSTACK_PAGES * PAGE_SIZE) /* total size of pcb */ 96 97 /* 98 * Mach derived conversion macros 99 */ 100 #define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK)) 101 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 102 #define trunc_4mpage(x) ((unsigned)(x) & ~PDRMASK) 103 #define round_4mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 104 105 #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 106 #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 107 108 #define powerpc_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 109 #define powerpc_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 110 111 #define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 112 113 #endif /* !_POWERPC_INCLUDE_PARAM_H_ */ 114