1 /* $NetBSD: param.h,v 1.33 2020/07/06 09:34:17 rin 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_OPT 38 #include "opt_ppcarch.h" 39 #endif 40 41 /* 42 * Machine dependent constants for PowerPC 43 * For userland regardless of port, force MACHINE to be "powerpc" 44 */ 45 #ifndef _KERNEL 46 #undef MACHINE 47 #endif 48 49 #ifdef _LP64 50 # ifndef MACHINE 51 # define MACHINE "powerpc64" 52 # endif 53 # define MACHINE_ARCH "powerpc64" 54 # define MID_MACHINE MID_POWERPC64 55 #else 56 # ifndef MACHINE 57 # define MACHINE "powerpc" 58 # endif 59 # define MACHINE_ARCH "powerpc" 60 # define MID_MACHINE MID_POWERPC 61 #endif 62 63 /* PowerPC-specific macro to align a stack pointer (downwards). */ 64 #define STACK_ALIGNBYTES (16 - 1) /* AltiVec */ 65 66 #ifdef PPC_IBM4XX 67 #define PGSHIFT 14 /* Use 16KB to reduce TLB thrashing */ 68 #define UPAGES 1 69 #else 70 #define PGSHIFT 12 71 #define UPAGES 4 72 #endif 73 #define NBPG (1 << PGSHIFT) /* Page size */ 74 #define PGOFSET (NBPG - 1) 75 76 #define BLKDEV_IOSIZE NBPG 77 78 #define USPACE (UPAGES * NBPG) 79 80 #ifndef MSGBUFSIZE 81 #define MSGBUFSIZE (2*NBPG) /* default message buffer size */ 82 #endif 83 84 #ifndef KERNBASE 85 #define KERNBASE 0x100000 86 #endif 87 88 /* 89 * Constants related to network buffer management. 90 * MCLBYTES must be no larger than NBPG (the software page size), and, 91 * on machines that exchange pages of input or output buffers with mbuf 92 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 93 * of the hardware page size. 94 */ 95 #ifndef MSIZE 96 #ifdef _LP64 97 #define MSIZE 512 /* size of an mbuf */ 98 #else /* _LP64 */ 99 #define MSIZE 256 /* size of an mbuf */ 100 #endif /* _LP64 */ 101 #endif 102 #ifndef MCLSHIFT 103 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 104 #endif 105 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 106 107 /* 108 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 109 * logical pages. 110 */ 111 #ifndef NKMEMPAGES_MIN_DEFAULT 112 #define NKMEMPAGES_MIN_DEFAULT ((16 * 1024 * 1024) >> PAGE_SHIFT) 113 #endif 114 #ifndef NKMEMPAGES_MAX_DEFAULT 115 #define NKMEMPAGES_MAX_DEFAULT ((256 * 1024 * 1024) >> PAGE_SHIFT) 116 #endif 117 118 #if defined(_KERNEL) && !defined(_LOCORE) 119 #include <machine/cpu.h> 120 #endif /* _KERNEL && !_LOCORE */ 121 122 #endif /* _POWERPC_PARAM_H_ */ 123