1 /* $NetBSD: param.h,v 1.34 2021/05/31 14:38:56 simonb 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_param.h" 39 #include "opt_ppcarch.h" 40 #endif 41 42 /* 43 * Machine dependent constants for PowerPC 44 * For userland regardless of port, force MACHINE to be "powerpc" 45 */ 46 #ifndef _KERNEL 47 #undef MACHINE 48 #endif 49 50 #ifdef _LP64 51 # ifndef MACHINE 52 # define MACHINE "powerpc64" 53 # endif 54 # define MACHINE_ARCH "powerpc64" 55 # define MID_MACHINE MID_POWERPC64 56 #else 57 # ifndef MACHINE 58 # define MACHINE "powerpc" 59 # endif 60 # define MACHINE_ARCH "powerpc" 61 # define MID_MACHINE MID_POWERPC 62 #endif 63 64 /* PowerPC-specific macro to align a stack pointer (downwards). */ 65 #define STACK_ALIGNBYTES (16 - 1) /* AltiVec */ 66 67 #ifdef PPC_IBM4XX 68 #define PGSHIFT 14 /* Use 16KB to reduce TLB thrashing */ 69 #define UPAGES 1 70 #else 71 #define PGSHIFT 12 72 #define UPAGES 4 73 #endif 74 #define NBPG (1 << PGSHIFT) /* Page size */ 75 #define PGOFSET (NBPG - 1) 76 77 #define BLKDEV_IOSIZE NBPG 78 79 #define USPACE (UPAGES * NBPG) 80 81 #ifndef MSGBUFSIZE 82 #define MSGBUFSIZE (2*NBPG) /* default message buffer size */ 83 #endif 84 85 #ifndef KERNBASE 86 #define KERNBASE 0x100000 87 #endif 88 89 /* 90 * Constants related to network buffer management. 91 * MCLBYTES must be no larger than NBPG (the software page size), and, 92 * on machines that exchange pages of input or output buffers with mbuf 93 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 94 * of the hardware page size. 95 */ 96 #ifndef MSIZE 97 #ifdef _LP64 98 #define MSIZE 512 /* size of an mbuf */ 99 #else /* _LP64 */ 100 #define MSIZE 256 /* size of an mbuf */ 101 #endif /* _LP64 */ 102 #endif 103 #ifndef MCLSHIFT 104 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 105 #endif 106 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 107 108 /* 109 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 110 * logical pages. 111 */ 112 #ifndef NKMEMPAGES_MIN_DEFAULT 113 #define NKMEMPAGES_MIN_DEFAULT ((16 * 1024 * 1024) >> PAGE_SHIFT) 114 #endif 115 #ifndef NKMEMPAGES_MAX_DEFAULT 116 #define NKMEMPAGES_MAX_DEFAULT ((256 * 1024 * 1024) >> PAGE_SHIFT) 117 #endif 118 119 #if defined(_KERNEL) && !defined(_LOCORE) 120 #include <machine/cpu.h> 121 #endif /* _KERNEL && !_LOCORE */ 122 123 #endif /* _POWERPC_PARAM_H_ */ 124