| c614ca50 |
1 | /* $NetBSD: param.h,v 1.13 2010/05/06 19:10:26 joerg Exp $ */\r |
| 2 | \r |
| 3 | /*\r |
| 4 | * Copyright (c) 1994,1995 Mark Brinicombe.\r |
| 5 | * All rights reserved.\r |
| 6 | *\r |
| 7 | * Redistribution and use in source and binary forms, with or without\r |
| 8 | * modification, are permitted provided that the following conditions\r |
| 9 | * are met:\r |
| 10 | * 1. Redistributions of source code must retain the above copyright\r |
| 11 | * notice, this list of conditions and the following disclaimer.\r |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright\r |
| 13 | * notice, this list of conditions and the following disclaimer in the\r |
| 14 | * documentation and/or other materials provided with the distribution.\r |
| 15 | * 3. All advertising materials mentioning features or use of this software\r |
| 16 | * must display the following acknowledgement:\r |
| 17 | * This product includes software developed by the RiscBSD team.\r |
| 18 | * 4. The name "RiscBSD" nor the name of the author may be used to\r |
| 19 | * endorse or promote products derived from this software without specific\r |
| 20 | * prior written permission.\r |
| 21 | *\r |
| 22 | * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED\r |
| 23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF\r |
| 24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\r |
| 25 | * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,\r |
| 26 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\r |
| 27 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR\r |
| 28 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r |
| 32 | * SUCH DAMAGE.\r |
| 33 | */\r |
| 34 | \r |
| 35 | #ifndef _ARM_PARAM_H_\r |
| 36 | #define _ARM_PARAM_H_\r |
| 37 | \r |
| 38 | /*\r |
| 39 | * Machine dependent constants for all ARM processors\r |
| 40 | */\r |
| 41 | \r |
| 42 | /*\r |
| 43 | * For KERNEL code:\r |
| 44 | * MACHINE must be defined by the individual port. This is so that\r |
| 45 | * uname returns the correct thing, etc.\r |
| 46 | *\r |
| 47 | * MACHINE_ARCH may be defined by individual ports as a temporary\r |
| 48 | * measure while we're finishing the conversion to ELF.\r |
| 49 | *\r |
| 50 | * For non-KERNEL code:\r |
| 51 | * If ELF, MACHINE and MACHINE_ARCH are forced to "arm/armeb".\r |
| 52 | */\r |
| 53 | \r |
| 54 | #if defined(_KERNEL)\r |
| 55 | #ifndef MACHINE_ARCH /* XXX For now */\r |
| 56 | #ifndef __ARMEB__\r |
| 57 | #define _MACHINE_ARCH arm\r |
| 58 | #define MACHINE_ARCH "arm"\r |
| 59 | #else\r |
| 60 | #define _MACHINE_ARCH armeb\r |
| 61 | #define MACHINE_ARCH "armeb"\r |
| 62 | #endif /* __ARMEB__ */\r |
| 63 | #endif /* MACHINE_ARCH */\r |
| 64 | #else\r |
| 65 | #undef _MACHINE\r |
| 66 | #undef MACHINE\r |
| 67 | #undef _MACHINE_ARCH\r |
| 68 | #undef MACHINE_ARCH\r |
| 69 | #define _MACHINE arm\r |
| 70 | #define MACHINE "arm"\r |
| 71 | #ifndef __ARMEB__\r |
| 72 | #define _MACHINE_ARCH arm\r |
| 73 | #define MACHINE_ARCH "arm"\r |
| 74 | #else\r |
| 75 | #define _MACHINE_ARCH armeb\r |
| 76 | #define MACHINE_ARCH "armeb"\r |
| 77 | #endif /* __ARMEB__ */\r |
| 78 | #endif /* !_KERNEL */\r |
| 79 | \r |
| 80 | #define MID_MACHINE MID_ARM6\r |
| 81 | \r |
| 82 | /*\r |
| 83 | * Round p (pointer or byte index) up to a correctly-aligned value\r |
| 84 | * for all data types (int, long, ...). The result is u_int and\r |
| 85 | * must be cast to any desired pointer type.\r |
| 86 | *\r |
| 87 | * ALIGNED_POINTER is a boolean macro that checks whether an address\r |
| 88 | * is valid to fetch data elements of type t from on this architecture.\r |
| 89 | * This does not reflect the optimal alignment, just the possibility\r |
| 90 | * (within reasonable limits).\r |
| 91 | *\r |
| 92 | */\r |
| 93 | #define ALIGNBYTES (sizeof(int) - 1)\r |
| 94 | #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)\r |
| 95 | #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)\r |
| 96 | /* ARM-specific macro to align a stack pointer (downwards). */\r |
| 97 | #define STACKALIGNBYTES (8 - 1)\r |
| 98 | #define STACKALIGN(p) ((u_int)(p) &~ STACKALIGNBYTES)\r |
| 99 | \r |
| 100 | #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */\r |
| 101 | #define DEV_BSIZE (1 << DEV_BSHIFT)\r |
| 102 | #define BLKDEV_IOSIZE 2048\r |
| 103 | \r |
| 104 | #ifndef MAXPHYS\r |
| 105 | #define MAXPHYS 65536 /* max I/O transfer size */\r |
| 106 | #endif\r |
| 107 | \r |
| 108 | /*\r |
| 109 | * Constants related to network buffer management.\r |
| 110 | * MCLBYTES must be no larger than NBPG (the software page size), and,\r |
| 111 | * on machines that exchange pages of input or output buffers with mbuf\r |
| 112 | * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple\r |
| 113 | * of the hardware page size.\r |
| 114 | */\r |
| 115 | #define MSIZE 256 /* size of an mbuf */\r |
| 116 | \r |
| 117 | #ifndef MCLSHIFT\r |
| 118 | #define MCLSHIFT 11 /* convert bytes to m_buf clusters */\r |
| 119 | /* 2K cluster can hold Ether frame */\r |
| 120 | #endif /* MCLSHIFT */\r |
| 121 | \r |
| 122 | #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */\r |
| 123 | \r |
| 124 | #ifndef NMBCLUSTERS_MAX\r |
| 125 | #define NMBCLUSTERS_MAX (0x2000000 / MCLBYTES) /* Limit to 64MB for clusters */\r |
| 126 | #endif\r |
| 127 | \r |
| 128 | /*\r |
| 129 | * Compatibility /dev/zero mapping.\r |
| 130 | */\r |
| 131 | #ifdef _KERNEL\r |
| 132 | #ifdef COMPAT_16\r |
| 133 | #define COMPAT_ZERODEV(x) (x == makedev(0, _DEV_ZERO_oARM))\r |
| 134 | #endif\r |
| 135 | #endif /* _KERNEL */\r |
| 136 | \r |
| 137 | #endif /* _ARM_PARAM_H_ */\r |
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