1 /* $NetBSD: param.h,v 1.24 2011/06/20 06:29:54 matt Exp $ */ 2 3 /*- 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef _POWERPC_PARAM_H 35 #define _POWERPC_PARAM_H 36 37 #ifdef _KERNEL 38 #if defined(_KERNEL_OPT) 39 #include "opt_ppcarch.h" 40 #endif 41 #endif 42 43 /* 44 * Machine dependent constants for PowerPC (32-bit only currently) 45 * For userland regardless of port, force MACHINE to be "powerpc" 46 */ 47 #ifndef _KERNEL 48 #undef MACHINE 49 #endif 50 #ifndef MACHINE 51 #define MACHINE "powerpc" 52 #endif 53 #define MACHINE_ARCH "powerpc" 54 #define MID_MACHINE MID_POWERPC 55 56 #define ALIGNBYTES (sizeof(double) - 1) 57 #define ALIGN(p) (((u_long)(p) + ALIGNBYTES) & ~ALIGNBYTES) 58 #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) 59 60 #ifdef PPC_IBM4XX 61 #define PGSHIFT 14 /* Use 16KB to reduce TLB thrashing */ 62 #define UPAGES 1 63 #else 64 #define PGSHIFT 12 65 #define UPAGES 4 66 #endif 67 #define NBPG (1 << PGSHIFT) /* Page size */ 68 #define PGOFSET (NBPG - 1) 69 70 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 71 #define DEV_BSIZE (1 << DEV_BSHIFT) 72 #define BLKDEV_IOSIZE NBPG 73 #ifndef MAXPHYS 74 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 75 #endif 76 77 #define USPACE (UPAGES * NBPG) 78 79 #ifndef MSGBUFSIZE 80 #define MSGBUFSIZE (2*NBPG) /* default message buffer size */ 81 #endif 82 83 #ifndef KERNBASE 84 #define KERNBASE 0x100000 85 #endif 86 87 /* 88 * Constants related to network buffer management. 89 * MCLBYTES must be no larger than NBPG (the software page size), and, 90 * on machines that exchange pages of input or output buffers with mbuf 91 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 92 * of the hardware page size. 93 */ 94 #ifndef MSIZE 95 #ifdef _LP64 96 #define MSIZE 512 /* size of an mbuf */ 97 #else /* _LP64 */ 98 #define MSIZE 256 /* size of an mbuf */ 99 #endif /* _LP64 */ 100 #endif 101 #ifndef MCLSHIFT 102 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 103 #endif 104 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 105 106 /* 107 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 108 * logical pages. 109 */ 110 #ifndef NKMEMPAGES_MIN_DEFAULT 111 #define NKMEMPAGES_MIN_DEFAULT ((16 * 1024 * 1024) >> PAGE_SHIFT) 112 #endif 113 #ifndef NKMEMPAGES_MAX_DEFAULT 114 #define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT) 115 #endif 116 117 #if defined(_KERNEL) && !defined(_LOCORE) 118 #include <machine/cpu.h> 119 #endif /* _KERNEL && !_LOCORE */ 120 121 #endif /* _POWERPC_PARAM_H_ */ 122