1 /* $NetBSD: param.h,v 1.37 2010/02/08 19:02:25 joerg Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department and Ralph Campbell. 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. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 36 * 37 * @(#)param.h 8.1 (Berkeley) 6/10/93 38 */ 39 /* 40 * Copyright (c) 1988 University of Utah. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department and Ralph Campbell. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 75 * 76 * @(#)param.h 8.1 (Berkeley) 6/10/93 77 */ 78 79 /* 80 * Machine dependent constants for the Alpha. 81 */ 82 #define _MACHINE alpha 83 #define MACHINE "alpha" 84 #define _MACHINE_ARCH alpha 85 #define MACHINE_ARCH "alpha" 86 #define MID_MACHINE MID_ALPHA 87 88 #include <machine/cpu.h> 89 90 /* 91 * Round p (pointer or byte index) up to a correctly-aligned value for all 92 * data types (int, long, ...). The result is u_long and must be cast to 93 * any desired pointer type. 94 * 95 * ALIGNED_POINTER is a boolean macro that checks whether an address 96 * is valid to fetch data elements of type t from on this architecture. 97 * This does not reflect the optimal alignment, just the possibility 98 * (within reasonable limits). 99 * 100 */ 101 #define ALIGNBYTES 7 102 #define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES) 103 #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) 104 105 #define NBPG (1 << ALPHA_PGSHIFT) /* bytes/page */ 106 #define PGOFSET (NBPG-1) /* byte off. into pg */ 107 #define PGSHIFT ALPHA_PGSHIFT /* LOG2(NBPG) */ 108 109 #define KERNBASE 0xfffffc0000230000 /* start of kernel virtual */ 110 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 111 112 #define DEV_BSIZE 512 113 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 114 #define BLKDEV_IOSIZE 2048 115 #ifndef MAXPHYS 116 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 117 #endif 118 119 #define SSIZE 1 /* initial stack size/NBPG */ 120 #define SINCR 1 /* increment of stack/NBPG */ 121 122 #define UPAGES 2 /* pages of u-area */ 123 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 124 125 #ifndef MSGBUFSIZE 126 #define MSGBUFSIZE NBPG /* default message buffer size */ 127 #endif 128 129 /* 130 * Constants related to network buffer management. 131 * MCLBYTES must be no larger than NBPG (the software page size), and, 132 * on machines that exchange pages of input or output buffers with mbuf 133 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 134 * of the hardware page size. 135 */ 136 #define MSIZE 256 /* size of an mbuf */ 137 138 #ifndef MCLSHIFT 139 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 140 /* 2K cluster can hold Ether frame */ 141 #endif /* MCLSHIFT */ 142 143 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 144 145 /* 146 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 147 * logical pages. 148 */ 149 #define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT) 150 #define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT) 151 152 /* 153 * Mach derived conversion macros 154 */ 155 #define alpha_round_page(x) ((((unsigned long)(x)) + NBPG - 1) & ~(NBPG-1)) 156 #define alpha_trunc_page(x) ((unsigned long)(x) & ~(NBPG-1)) 157 #define alpha_btop(x) ((unsigned long)(x) >> PGSHIFT) 158 #define alpha_ptob(x) ((unsigned long)(x) << PGSHIFT) 159 160 #ifdef _KERNEL 161 #ifndef _LOCORE 162 163 #include <machine/intr.h> 164 165 void delay(unsigned long); 166 #define DELAY(n) delay(n) 167 168 /* XXX THE FOLLOWING PROTOTYPE SHOULD BE A BUS.H INTERFACE */ 169 paddr_t alpha_XXX_dmamap(vaddr_t); 170 /* XXX END BUS.H */ 171 172 #endif 173 #endif /* !_KERNEL */ 174