param.h (4867B) - Raw
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 */ 41 42 #ifndef _ARM_INCLUDE_PARAM_H_ 43 #define _ARM_INCLUDE_PARAM_H_ 44 45 /* 46 * Machine dependent constants for StrongARM 47 */ 48 49 #include <machine/_align.h> 50 51 #define STACKALIGNBYTES (8 - 1) 52 #define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES) 53 54 #define __PCI_REROUTE_INTERRUPT 55 56 #ifndef MACHINE 57 #define MACHINE "arm" 58 #endif 59 #ifndef MACHINE_ARCH 60 #if __ARM_ARCH >= 7 61 #define MACHINE_ARCH "armv7" 62 #else 63 #define MACHINE_ARCH "armv6" 64 #endif 65 #endif 66 67 #ifdef SMP 68 #ifndef MAXCPU 69 #define MAXCPU 4 70 #endif 71 #else 72 #define MAXCPU 1 73 #endif 74 75 #ifndef MAXMEMDOM 76 #define MAXMEMDOM 1 77 #endif 78 79 #define ALIGNBYTES _ALIGNBYTES 80 #define ALIGN(p) _ALIGN(p) 81 /* 82 * ALIGNED_POINTER is a boolean macro that checks whether an address 83 * is valid to fetch data elements of type t from on this architecture. 84 * This does not reflect the optimal alignment, just the possibility 85 * (within reasonable limits). 86 * 87 * armv4 and v5 require alignment to the type's size. armv6 requires 8-byte 88 * alignment for the ldrd/strd instructions, but otherwise follows armv7 rules. 89 * armv7 requires that an 8-byte type be aligned to at least a 4-byte boundary; 90 * access to smaller types can be unaligned, except that the compiler may 91 * optimize access to adjacent uint32_t values into a single load/store-multiple 92 * instruction which requires 4-byte alignment, so we must provide the most- 93 * pessimistic answer possible even on armv7. 94 */ 95 #define ALIGNED_POINTER(p, t) ((((unsigned)(p)) & (sizeof(t)-1)) == 0) 96 97 /* 98 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 99 * architecture. It should be used with appropriate caution. 100 */ 101 #define CACHE_LINE_SHIFT 6 102 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 103 104 #define PAGE_SHIFT 12 105 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 106 #define PAGE_MASK (PAGE_SIZE - 1) 107 108 #define PDR_SHIFT 20 /* log2(NBPDR) */ 109 #define NBPDR (1 << PDR_SHIFT) 110 #define PDRMASK (NBPDR - 1) 111 #define NPDEPG (1 << (32 - PDR_SHIFT)) 112 113 #define MAXPAGESIZES 2 /* maximum number of supported page sizes */ 114 115 #ifndef KSTACK_PAGES 116 #define KSTACK_PAGES 2 117 #endif /* !KSTACK_PAGES */ 118 119 #ifndef FPCONTEXTSIZE 120 #define FPCONTEXTSIZE (0x100) 121 #endif 122 123 #ifndef KSTACK_GUARD_PAGES 124 #define KSTACK_GUARD_PAGES 1 125 #endif /* !KSTACK_GUARD_PAGES */ 126 127 #define USPACE_SVC_STACK_TOP (kstack_pages * PAGE_SIZE) 128 129 /* 130 * Mach derived conversion macros 131 */ 132 #define trunc_page(x) ((x) & ~PAGE_MASK) 133 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 134 #define trunc_1mpage(x) ((unsigned)(x) & ~PDRMASK) 135 #define round_1mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 136 137 #define atop(x) ((unsigned)(x) >> PAGE_SHIFT) 138 #define ptoa(x) ((unsigned)(x) << PAGE_SHIFT) 139 140 #define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 141 #define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 142 143 #define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 144 145 #endif /* !_ARM_INCLUDE_PARAM_H_ */