1 /* $OpenBSD: param.h,v 1.21 2003/04/16 07:26:07 mickey Exp $ */ 2 3 /* 4 * Copyright (c) 1988-1994, The University of Utah and 5 * the Computer Systems Laboratory at the University of Utah (CSL). 6 * All rights reserved. 7 * 8 * Permission to use, copy, modify and distribute this software is hereby 9 * granted provided that (1) source code retains these copyright, permission, 10 * and disclaimer notices, and (2) redistributions including binaries 11 * reproduce the notices in supporting documentation, and (3) all advertising 12 * materials mentioning features or use of this software display the following 13 * acknowledgement: ``This product includes software developed by the 14 * Computer Systems Laboratory at the University of Utah.'' 15 * 16 * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS 17 * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF 18 * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 19 * 20 * CSL requests users of this software to return to csl-dist@cs.utah.edu any 21 * improvements that they make and grant CSL redistribution rights. 22 * 23 * Utah $Hdr: param.h 1.18 94/12/16$ 24 */ 25 26 #include <machine/cpu.h> 27 #include <machine/intr.h> 28 29 /* 30 * Machine dependent constants for PA-RISC. 31 */ 32 33 #define _MACHINE hppa 34 #define MACHINE "hppa" 35 #define _MACHINE_ARCH hppa 36 #define MACHINE_ARCH "hppa" 37 #define MID_MACHINE MID_HPUX800 38 39 /* 40 * Round p (pointer or byte index) up to a correctly-aligned value for all 41 * data types (int, long, ...). The result is u_int and must be cast to 42 * any desired pointer type. 43 */ 44 #define ALIGNBYTES 7 45 #define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES) 46 #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0) 47 48 #define PAGE_SIZE 4096 49 #define PAGE_MASK (PAGE_SIZE-1) 50 #define PAGE_SHIFT 12 51 52 #define NBPG 4096 /* bytes/page */ 53 #define PGOFSET (NBPG-1) /* byte offset into page */ 54 #define PGSHIFT 12 /* LOG2(NBPG) */ 55 56 #define KERNBASE 0x00000000 /* start of kernel virtual */ 57 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 58 59 #define DEV_BSIZE 512 60 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 61 #define BLKDEV_IOSIZE 2048 62 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 63 64 #define MACHINE_STACK_GROWS_UP 1 /* stack grows to higher addresses */ 65 66 #define SSIZE (4) /* initial stack size/NBPG */ 67 #define SINCR (1) /* increment of stack/NBPG */ 68 69 #define USPACE (4 * NBPG) /* pages for user struct and kstack */ 70 71 #ifndef MSGBUFSIZE 72 #define MSGBUFSIZE 2*NBPG /* default message buffer size */ 73 #endif 74 75 /* 76 * Constants related to network buffer management. 77 * MCLBYTES must be no larger than the software page size, and, 78 * on machines that exchange pages of input or output buffers with mbuf 79 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 80 * of the hardware page size. 81 */ 82 #define MSIZE 256 /* size of an mbuf */ 83 #define MCLSHIFT 11 84 #define MCLBYTES (1 << MCLSHIFT) /* large enough for ether MTU */ 85 #define MCLOFSET (MCLBYTES - 1) 86 #ifndef NMBCLUSTERS 87 #define NMBCLUSTERS (2048) /* cl map size: 1MB */ 88 #endif 89 90 /* 91 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 92 * logical pages. 93 */ 94 #define NKMEMPAGES_MIN_DEFAULT ((4 * 1024 * 1024) >> PAGE_SHIFT) 95 #define NKMEMPAGES_MAX_DEFAULT ((64 * 1024 * 1024) >> PAGE_SHIFT) 96 97 /* pages ("clicks") (4096 bytes) to disk blocks */ 98 #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) 99 #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) 100 101 /* pages to bytes */ 102 #define ctob(x) ((x)<<PGSHIFT) 103 #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) 104 105 #define btodb(bytes) ((unsigned)(bytes) >> DEV_BSHIFT) 106 #define dbtob(db) ((unsigned)(db) << DEV_BSHIFT) 107 108 /* 109 * Map a ``block device block'' to a file system block. 110 * This should be device dependent, and should use the bsize 111 * field from the disk label. 112 * For now though just use DEV_BSIZE. 113 */ 114 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 115 116 /* 117 * Mach derived conversion macros 118 */ 119 #define hppa_round_page(x) ((((unsigned long)(x)) + NBPG - 1) & ~(NBPG-1)) 120 #define hppa_trunc_page(x) ((unsigned long)(x) & ~(NBPG-1)) 121 122 #define btop(x) ((unsigned long)(x) >> PGSHIFT) 123 #define ptob(x) ((unsigned long)(x) << PGSHIFT) 124 125 #ifdef _KERNEL 126 #ifdef COMPAT_HPUX 127 /* 128 * Constants/macros for HPUX multiple mapping of user address space. 129 * Pages in the first 256Mb are mapped in at every 256Mb segment. 130 */ 131 #define HPMMMASK 0xF0000000 132 #define ISHPMMADDR(v) 0 /* XXX ...jef */ 133 #define HPMMBASEADDR(v) ((unsigned)(v) & ~HPMMMASK) 134 #endif 135 136 #ifndef _LOCORE 137 #define CONADDR conaddr 138 #define CONUNIT conunit 139 #define COM_FREQ 7372800 140 extern hppa_hpa_t conaddr; 141 extern int conunit; 142 #endif 143 #endif 144