1 /* $NetBSD: param.h,v 1.1 2014/09/03 19:34:26 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _OR1K_PARAM_H_ 33 #define _OR1K_PARAM_H_ 34 35 /* 36 * Machine dependent constants for all OpenRISC processors 37 */ 38 39 /* 40 * For KERNEL code: 41 * MACHINE must be defined by the individual port. This is so that 42 * uname returns the correct thing, etc. 43 * 44 * For non-KERNEL code: 45 * If ELF, MACHINE and MACHINE_ARCH are forced to "or1k/or1k". 46 */ 47 48 #define _MACHINE_ARCH or1k 49 #define MACHINE_ARCH "or1k" 50 #define _MACHINE or1k 51 #define MACHINE "or1k" 52 53 #define MID_MACHINE MID_OR1K 54 55 /* OR1K-specific macro to align a stack pointer (downwards). */ 56 #define STACK_ALIGNBYTES (__BIGGEST_ALIGNMENT__ - 1) 57 #define ALIGNBYTES32 __BIGGEST_ALIGNMENT__ 58 59 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 60 #define DEV_BSIZE (1 << DEV_BSHIFT) 61 #define BLKDEV_IOSIZE 2048 62 63 #ifndef MAXPHYS 64 #define MAXPHYS 65536 /* max I/O transfer size */ 65 #endif 66 67 #define NKMEMPAGES_MAX_DEFAULT (2048UL * 1024 * 1024) 68 #define NKMEMPAGES_MIN_DEFAULT (128UL * 1024 * 1024) 69 70 #define PGSHIFT 13 71 #define NBPG (1 << PGSHIFT) 72 #define PGOFSET (NBPG - 1) 73 74 /* 75 * Constants related to network buffer management. 76 * MCLBYTES must be no larger than NBPG (the software page size), and 77 * NBPG % MCLBYTES must be zero. 78 */ 79 #define MSIZE 512 /* size of an mbuf */ 80 81 #ifndef MCLSHIFT 82 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 83 /* 2K cluster can hold Ether frame */ 84 #endif /* MCLSHIFT */ 85 86 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 87 88 #ifdef _KERNEL 89 void delay(unsigned long); 90 #define DELAY(x) delay(x) 91 #endif 92 93 #endif /* _OR1K_PARAM_H_ */ 94