Annotation of sys/arch/m88k/include/param.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: param.h,v 1.10 2007/05/28 21:02:49 thib Exp $ */
! 2: /*
! 3: * Copyright (c) 1999 Steve Murphree, Jr.
! 4: * Copyright (c) 1988 University of Utah.
! 5: * Copyright (c) 1982, 1986, 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: * the Systems Programming Group of the University of Utah Computer
! 10: * Science Department.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. Neither the name of the University nor the names of its contributors
! 21: * may be used to endorse or promote products derived from this software
! 22: * without specific prior written permission.
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 34: * SUCH DAMAGE.
! 35: *
! 36: * from: Utah $Hdr: machparam.h 1.11 89/08/14$
! 37: *
! 38: * @(#)param.h 7.8 (Berkeley) 6/28/91
! 39: */
! 40: #ifndef _M88K_PARAM_H_
! 41: #define _M88K_PARAM_H_
! 42:
! 43: #ifdef _KERNEL
! 44: #ifndef _LOCORE
! 45: #include <machine/cpu.h>
! 46: #endif /* _LOCORE */
! 47: #endif
! 48:
! 49: #define _MACHINE_ARCH m88k
! 50: #define MACHINE_ARCH "m88k"
! 51: #define MID_MACHINE MID_M88K
! 52:
! 53: /*
! 54: * Round p (pointer or byte index) down to a correctly-aligned value
! 55: * for all data types (int, long, ...). The result is u_int and
! 56: * must be cast to any desired pointer type. ALIGN() is used for
! 57: * aligning stack, which needs to be on a double word boundary for
! 58: * 88k.
! 59: */
! 60:
! 61: #define ALIGNBYTES 15 /* 64 bit alignment */
! 62: #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) & ~ALIGNBYTES)
! 63: #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
! 64:
! 65: #define NBPG (1 << PGSHIFT) /* bytes/page */
! 66: #define PGOFSET (NBPG-1) /* byte offset into page */
! 67: #define PGSHIFT 12 /* LOG2(NBPG) */
! 68:
! 69: #define PAGE_SHIFT 12
! 70: #define PAGE_SIZE (1 << PAGE_SHIFT)
! 71: #define PAGE_MASK (PAGE_SIZE - 1)
! 72:
! 73: #define NPTEPG (PAGE_SIZE / (sizeof(pt_entry_t)))
! 74:
! 75: #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
! 76: #define DEV_BSIZE (1 << DEV_BSHIFT)
! 77: #define BLKDEV_IOSIZE 2048
! 78: #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
! 79:
! 80: #define UPAGES 2 /* pages of u-area */
! 81: #define USPACE (UPAGES * NBPG)
! 82: #define USPACE_ALIGN (0) /* u-area alignment 0-none */
! 83:
! 84: /*
! 85: * Constants related to network buffer management.
! 86: */
! 87: #define NMBCLUSTERS 2048 /* map size, max cluster allocation */
! 88:
! 89: /*
! 90: * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
! 91: * logical pages.
! 92: */
! 93: #define NKMEMPAGES_MIN_DEFAULT ((4 * 1024 * 1024) >> PAGE_SHIFT)
! 94: #define NKMEMPAGES_MAX_DEFAULT ((64 * 1024 * 1024) >> PAGE_SHIFT)
! 95:
! 96: #define MSGBUFSIZE PAGE_SIZE
! 97:
! 98: /* pages ("clicks") to disk blocks */
! 99: #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
! 100: #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
! 101:
! 102: /* pages to bytes */
! 103: #define ctob(x) ((x) << PGSHIFT)
! 104: #define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
! 105:
! 106: /* bytes to disk blocks */
! 107: #define btodb(x) ((x) >> DEV_BSHIFT)
! 108: #define dbtob(x) ((x) << DEV_BSHIFT)
! 109:
! 110: /*
! 111: * Get interrupt glue.
! 112: */
! 113: #include <machine/intr.h>
! 114:
! 115: #ifdef _KERNEL
! 116:
! 117: #define DELAY(x) delay(x)
! 118:
! 119: #if !defined(_LOCORE)
! 120: extern void delay(int);
! 121: extern int cputyp;
! 122: #endif
! 123:
! 124: /*
! 125: * Values for the cputyp variable.
! 126: */
! 127: #define CPU_88100 0x100
! 128: #define CPU_88110 0x110
! 129:
! 130: #ifdef M88100
! 131: #ifdef M88110
! 132: #define CPU_IS88100 (cputyp == CPU_88100)
! 133: #define CPU_IS88110 (cputyp != CPU_88100)
! 134: #else
! 135: #define CPU_IS88100 1
! 136: #define CPU_IS88110 0
! 137: #endif
! 138: #else
! 139: #define CPU_IS88100 0
! 140: #define CPU_IS88110 1
! 141: #endif
! 142:
! 143: #endif /* _KERNEL */
! 144: #endif /* !_M88K_PARAM_H_ */
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