1 /** @file 2 Machine dependent constants for the Intel64 Architecture(X64). 3 4 Copyright (c) 2010-2012, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials are licensed and made available under 6 the terms and conditions of the BSD License that accompanies this distribution. 7 The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license. 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 * $NetBSD: param.h,v 1.3 2006/08/28 13:43:35 yamt Exp 14 **/ 15 #ifndef _X64_PARAM_H_ 16 #define _X64_PARAM_H_ 17 18 #define _MACHINE amd64 19 #define MACHINE "amd64" 20 #define _MACHINE_ARCH x86_64 21 #define MACHINE_ARCH "x86_64" 22 #define MID_MACHINE MID_X86_64 23 24 /* 25 * Round p (pointer or byte index) up to a correctly-aligned value 26 * for all data types (int, long, ...). The result is u_int and 27 * must be cast to any desired pointer type. 28 * 29 * ALIGNED_POINTER is a boolean macro that checks whether an address 30 * is valid to fetch data elements of type t from on this architecture. 31 * This does not reflect the optimal alignment, just the possibility 32 * (within reasonable limits). 33 * 34 */ 35 #define ALIGNBYTES (sizeof(INT64) - 1) 36 #define ALIGN(p) (((UINT64)(p) + ALIGNBYTES) &~ALIGNBYTES) 37 #define ALIGNED_POINTER(p,t) 1 38 39 #define ALIGNBYTES32 (sizeof(INT32) - 1) 40 #define ALIGN32(p) (((UINT64)(p) + ALIGNBYTES32) &~ALIGNBYTES32) 41 42 #define PGSHIFT 12 /* LOG2(NBPG) */ 43 #define NBPG (1 << PGSHIFT) /* bytes/page */ 44 #define PGOFSET (NBPG-1) /* byte offset into page */ 45 #define NPTEPG (NBPG/(sizeof (pt_entry_t))) 46 47 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 48 #define DEV_BSIZE (1 << DEV_BSHIFT) 49 #define BLKDEV_IOSIZE 2048 50 #ifndef MAXPHYS 51 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 52 #endif 53 54 #define SSIZE 1 /* initial stack size/NBPG */ 55 #define SINCR 1 /* increment of stack/NBPG */ 56 #define UPAGES 5 /* pages of u-area */ 57 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 58 59 #ifndef MSGBUFSIZE 60 #define MSGBUFSIZE 4*NBPG /* default message buffer size */ 61 #endif 62 63 /* 64 * Constants related to network buffer management. 65 * MCLBYTES must be no larger than NBPG (the software page size), and, 66 * on machines that exchange pages of input or output buffers with mbuf 67 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 68 * of the hardware page size. 69 */ 70 #define MSIZE 512 /* size of an mbuf */ 71 72 #ifndef MCLSHIFT 73 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 74 /* 2K cluster can hold Ether frame */ 75 #endif /* MCLSHIFT */ 76 77 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 78 79 #ifndef NMBCLUSTERS 80 #ifdef GATEWAY 81 #define NMBCLUSTERS 4096 /* map size, max cluster allocation */ 82 #else 83 #define NMBCLUSTERS 2048 /* map size, max cluster allocation */ 84 #endif 85 #endif 86 87 #ifndef NFS_RSIZE 88 #define NFS_RSIZE 32768 89 #endif 90 #ifndef NFS_WSIZE 91 #define NFS_WSIZE 32768 92 #endif 93 94 #define x86_round_page(x) ((((EFI_ULONG_T)(x)) + PGOFSET) & ~PGOFSET) 95 #define x86_trunc_page(x) ((EFI_ULONG_T)(x) & ~PGOFSET) 96 #define x86_btop(x) ((EFI_ULONG_T)(x) >> PGSHIFT) 97 #define x86_ptob(x) ((EFI_ULONG_T)(x) << PGSHIFT) 98 99 #define btop(x) x86_btop(x) 100 #define ptob(x) x86_ptob(x) 101 #define round_pdr(x) x86_round_pdr(x) 102 103 #define mstohz(ms) ((ms + 0UL) * hz / 1000) 104 105 #endif /* _X64_PARAM_H_ */ 106
