1 /* $NetBSD: param.h,v 1.3 2006/08/28 13:43:35 yamt Exp $ */ 2 3 #ifdef _KERNEL 4 #ifdef _LOCORE 5 #include <machine/psl.h> 6 #else 7 #include <machine/cpu.h> 8 #endif 9 #endif 10 11 #define _MACHINE amd64 12 #define MACHINE "amd64" 13 #define _MACHINE_ARCH x86_64 14 #define MACHINE_ARCH "x86_64" 15 #define MID_MACHINE MID_X86_64 16 17 /* 18 * Round p (pointer or byte index) up to a correctly-aligned value 19 * for all data types (int, long, ...). The result is u_int and 20 * must be cast to any desired pointer type. 21 * 22 * ALIGNED_POINTER is a boolean macro that checks whether an address 23 * is valid to fetch data elements of type t from on this architecture. 24 * This does not reflect the optimal alignment, just the possibility 25 * (within reasonable limits). 26 * 27 */ 28 #define ALIGNBYTES (sizeof(long) - 1) 29 #define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ALIGNBYTES) 30 #define ALIGNED_POINTER(p,t) 1 31 32 #define ALIGNBYTES32 (sizeof(int) - 1) 33 #define ALIGN32(p) (((u_long)(p) + ALIGNBYTES32) &~ALIGNBYTES32) 34 35 #define PGSHIFT 12 /* LOG2(NBPG) */ 36 #define NBPG (1 << PGSHIFT) /* bytes/page */ 37 #define PGOFSET (NBPG-1) /* byte offset into page */ 38 #define NPTEPG (NBPG/(sizeof (pt_entry_t))) 39 40 /* 41 * XXXfvdl change this (after bootstrap) to take # of bits from 42 * config info into account. 43 */ 44 #define KERNBASE 0xffffffff80000000 /* start of kernel virtual space */ 45 #define KERNTEXTOFF 0xffffffff80100000 /* start of kernel text */ 46 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 47 48 #define KERNTEXTOFF_HI 0xffffffff 49 #define KERNTEXTOFF_LO 0x80100000 50 51 #define KERNBASE_HI 0xffffffff 52 #define KERNBASE_LO 0x80000000 53 54 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 55 #define DEV_BSIZE (1 << DEV_BSHIFT) 56 #define BLKDEV_IOSIZE 2048 57 #ifndef MAXPHYS 58 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 59 #endif 60 61 #define SSIZE 1 /* initial stack size/NBPG */ 62 #define SINCR 1 /* increment of stack/NBPG */ 63 #define UPAGES 5 /* pages of u-area */ 64 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 65 66 #ifndef MSGBUFSIZE 67 #define MSGBUFSIZE 4*NBPG /* default message buffer size */ 68 #endif 69 70 /* 71 * Constants related to network buffer management. 72 * MCLBYTES must be no larger than NBPG (the software page size), and, 73 * on machines that exchange pages of input or output buffers with mbuf 74 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 75 * of the hardware page size. 76 */ 77 #define MSIZE 512 /* size of an mbuf */ 78 79 #ifndef MCLSHIFT 80 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 81 /* 2K cluster can hold Ether frame */ 82 #endif /* MCLSHIFT */ 83 84 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 85 86 #ifndef NMBCLUSTERS 87 #if defined(_KERNEL_OPT) 88 #include "opt_gateway.h" 89 #endif 90 91 #ifdef GATEWAY 92 #define NMBCLUSTERS 4096 /* map size, max cluster allocation */ 93 #else 94 #define NMBCLUSTERS 2048 /* map size, max cluster allocation */ 95 #endif 96 #endif 97 98 #ifndef NFS_RSIZE 99 #define NFS_RSIZE 32768 100 #endif 101 #ifndef NFS_WSIZE 102 #define NFS_WSIZE 32768 103 #endif 104 105 /* 106 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 107 * logical pages. 108 */ 109 #define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT) 110 #define NKMEMPAGES_MAX_DEFAULT ((1 *1024 * 1024 * 1024) >> PAGE_SHIFT) 111 112 /* 113 * XXXfvdl the PD* stuff is different from i386. 114 */ 115 /* 116 * Mach derived conversion macros 117 */ 118 #define x86_round_pdr(x) \ 119 ((((unsigned long)(x)) + (NBPD_L2 - 1)) & ~(NBPD_L2 - 1)) 120 #define x86_trunc_pdr(x) ((unsigned long)(x) & ~(NBPD_L2 - 1)) 121 #define x86_btod(x) ((unsigned long)(x) >> L2_SHIFT) 122 #define x86_dtob(x) ((unsigned long)(x) << L2_SHIFT) 123 #define x86_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET) 124 #define x86_trunc_page(x) ((unsigned long)(x) & ~PGOFSET) 125 #define x86_btop(x) ((unsigned long)(x) >> PGSHIFT) 126 #define x86_ptob(x) ((unsigned long)(x) << PGSHIFT) 127 128 #define btop(x) x86_btop(x) 129 #define ptob(x) x86_ptob(x) 130 #define round_pdr(x) x86_round_pdr(x) 131 132 #define mstohz(ms) ((ms + 0UL) * hz / 1000) 133