Annotation of sys/arch/m68k/include/param.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: param.h,v 1.22 2007/05/28 21:02:49 thib Exp $ */
! 2: /* $NetBSD: param.h,v 1.2 1997/06/10 18:21:23 veego Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1988 University of Utah.
! 6: * Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
! 7: * All rights reserved.
! 8: *
! 9: * This code is derived from software contributed to Berkeley by
! 10: * the Systems Programming Group of the University of Utah Computer
! 11: * Science Department.
! 12: *
! 13: * Redistribution and use in source and binary forms, with or without
! 14: * modification, are permitted provided that the following conditions
! 15: * are met:
! 16: * 1. Redistributions of source code must retain the above copyright
! 17: * notice, this list of conditions and the following disclaimer.
! 18: * 2. Redistributions in binary form must reproduce the above copyright
! 19: * notice, this list of conditions and the following disclaimer in the
! 20: * documentation and/or other materials provided with the distribution.
! 21: * 3. 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: Utah $Hdr: machparam.h 1.16 92/12/20$
! 38: *
! 39: * @(#)param.h 8.1 (Berkeley) 6/10/93
! 40: */
! 41: #ifndef _M68K_PARAM_H_
! 42: #define _M68K_PARAM_H_
! 43:
! 44: /*
! 45: * Machine independent constants for m68k
! 46: */
! 47: #define _MACHINE_ARCH m68k
! 48: #define MACHINE_ARCH "m68k"
! 49: #define MID_MACHINE MID_M68K
! 50:
! 51: /*
! 52: * Round p (pointer or byte index) up to a correctly-aligned value for all
! 53: * data types (int, long, ...). The result is u_int and must be cast to
! 54: * any desired pointer type.
! 55: *
! 56: * ALIGNED_POINTER is a boolean macro that checks whether an address
! 57: * is valid to fetch data elements of type t from on this architecture.
! 58: * This does not reflect the optimal alignment, just the possibility
! 59: * (within reasonable limits).
! 60: *
! 61: */
! 62: #define ALIGNBYTES (sizeof(int) - 1)
! 63: #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
! 64: #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0)
! 65:
! 66: #define PAGE_SIZE (1 << PAGE_SHIFT)
! 67: #define PAGE_MASK (PAGE_SIZE - 1)
! 68:
! 69: #define PGSHIFT PAGE_SHIFT
! 70: #define NBPG (1 << PGSHIFT) /* bytes/page */
! 71: #define PGOFSET (NBPG-1) /* byte offset into page */
! 72:
! 73: #define NPTEPG (PAGE_SIZE / (sizeof(pt_entry_t)))
! 74:
! 75: #define BTOPKERNBASE ((u_long)KERNBASE >> PAGE_SHIFT)
! 76:
! 77: #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
! 78: #define DEV_BSIZE (1 << DEV_BSHIFT)
! 79: #define BLKDEV_IOSIZE 2048
! 80: #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
! 81:
! 82: #define SEGSHIFT020 (34 - PAGE_SHIFT)
! 83: #define SEGSHIFT040 (18)
! 84: #ifndef SEGSHIFT
! 85: #if defined(M68040) || defined(M68060)
! 86: #if defined(M68020) || defined(M68030)
! 87: #define SEGSHIFT ((mmutype <= MMU_68040) ? SEGSHIFT040 : SEGSHIFT020)
! 88: #else
! 89: #define SEGSHIFT SEGSHIFT040
! 90: #endif
! 91: #else
! 92: #define SEGSHIFT SEGSHIFT020
! 93: #endif
! 94: #define NBSEG (1 << SEGSHIFT)
! 95: #define SEGOFSET (NBSEG - 1)
! 96: #endif
! 97:
! 98: /* mac68k use 3 pages of u-area */
! 99: #ifndef UPAGES
! 100: #define UPAGES 2 /* pages of u-area */
! 101: #endif
! 102: #define USPACE (UPAGES * PAGE_SIZE)
! 103: #define USPACE_ALIGN (0) /* u-area alignment 0-none */
! 104:
! 105: /*
! 106: * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
! 107: * logical pages.
! 108: */
! 109: #define NKMEMPAGES_MIN_DEFAULT ((4 * 1024 * 1024) >> PAGE_SHIFT)
! 110: #define NKMEMPAGES_MAX_DEFAULT ((64 * 1024 * 1024) >> PAGE_SHIFT)
! 111:
! 112: /*
! 113: * Constants related to network buffer management.
! 114: */
! 115: #define NMBCLUSTERS 1024 /* map size, max cluster allocation */
! 116:
! 117: /* pages ("clicks") to disk blocks */
! 118: #define ctod(x) ((x) << (PAGE_SHIFT - DEV_BSHIFT))
! 119: #define dtoc(x) ((x) >> (PAGE_SHIFT - DEV_BSHIFT))
! 120:
! 121: /* pages to bytes */
! 122: #define ctob(x) ((x) << PAGE_SHIFT)
! 123: #define btoc(x) (((x) + PAGE_MASK) >> PAGE_SHIFT)
! 124:
! 125: /* bytes to disk blocks */
! 126: #define btodb(x) ((x) >> DEV_BSHIFT)
! 127: #define dbtob(x) ((x) << DEV_BSHIFT)
! 128:
! 129: /*
! 130: * Mach derived conversion macros
! 131: */
! 132: #define m68k_round_seg(x) ((((unsigned)(x)) + SEGOFSET) & ~SEGOFSET)
! 133: #define m68k_trunc_seg(x) ((unsigned)(x) & ~SEGOFSET)
! 134: #define m68k_page_offset(x) ((unsigned)(x) & PGOFSET)
! 135:
! 136: #ifdef COMPAT_HPUX
! 137: /*
! 138: * Constants/macros for HPUX multiple mapping of user address space.
! 139: * Pages in the first 256Mb are mapped in at every 256Mb segment.
! 140: */
! 141: #define HPMMMASK 0xF0000000
! 142: #define ISHPMMADDR(p, v) \
! 143: (((p)->p_md.md_flags & MDP_HPUXMMAP) && \
! 144: ((unsigned)(v) & HPMMMASK) && \
! 145: ((unsigned)(v) & HPMMMASK) != HPMMMASK)
! 146: #define HPMMBASEADDR(v) \
! 147: ((unsigned)(v) & ~HPMMMASK)
! 148: #endif /* COMPAT_HPUX */
! 149:
! 150: #include <machine/cpu.h>
! 151:
! 152: #endif /* !_M68K_PARAM_H_ */
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to param.h CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / arch / m68k / include