1 /* $NetBSD: param.h,v 1.17 2012/02/04 17:56:16 para Exp $ */ 2 3 #ifdef __x86_64__ 4 5 #ifdef _KERNEL 6 #include <machine/cpu.h> 7 #endif 8 9 #define _MACHINE amd64 10 #define MACHINE "amd64" 11 #define _MACHINE_ARCH x86_64 12 #define MACHINE_ARCH "x86_64" 13 #define MID_MACHINE MID_X86_64 14 15 #define ALIGNED_POINTER(p,t) 1 16 17 #define ALIGNBYTES32 (sizeof(int) - 1) 18 #define ALIGN32(p) (((u_long)(p) + ALIGNBYTES32) &~ALIGNBYTES32) 19 20 #define PGSHIFT 12 /* LOG2(NBPG) */ 21 #define NBPG (1 << PGSHIFT) /* bytes/page */ 22 #define PGOFSET (NBPG-1) /* byte offset into page */ 23 #define NPTEPG (NBPG/(sizeof (pt_entry_t))) 24 25 /* 26 * XXXfvdl change this (after bootstrap) to take # of bits from 27 * config info into account. 28 */ 29 #define KERNBASE 0xffffffff80000000 /* start of kernel virtual space */ 30 #define KERNTEXTOFF 0xffffffff80100000 /* start of kernel text */ 31 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 32 33 #define KERNTEXTOFF_HI 0xffffffff 34 #define KERNTEXTOFF_LO 0x80100000 35 36 #define KERNBASE_HI 0xffffffff 37 #define KERNBASE_LO 0x80000000 38 39 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 40 #define DEV_BSIZE (1 << DEV_BSHIFT) 41 #define BLKDEV_IOSIZE 2048 42 #ifndef MAXPHYS 43 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 44 #endif 45 46 #define SSIZE 1 /* initial stack size/NBPG */ 47 #define SINCR 1 /* increment of stack/NBPG */ 48 #ifdef DIAGNOSTIC 49 #define UPAGES 4 /* pages of u-area (1 for redzone) */ 50 #else 51 #define UPAGES 3 /* pages of u-area */ 52 #endif 53 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 54 #define INTRSTACKSIZE 4096 55 56 #ifndef MSGBUFSIZE 57 #define MSGBUFSIZE 8*NBPG /* default message buffer size */ 58 #endif 59 60 /* 61 * Constants related to network buffer management. 62 * MCLBYTES must be no larger than NBPG (the software page size), and, 63 * on machines that exchange pages of input or output buffers with mbuf 64 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 65 * of the hardware page size. 66 */ 67 #define MSIZE 512 /* size of an mbuf */ 68 69 #ifndef MCLSHIFT 70 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 71 /* 2K cluster can hold Ether frame */ 72 #endif /* MCLSHIFT */ 73 74 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 75 76 #ifndef NFS_RSIZE 77 #define NFS_RSIZE 32768 78 #endif 79 #ifndef NFS_WSIZE 80 #define NFS_WSIZE 32768 81 #endif 82 83 /* 84 * Minimum size of the kernel kmem_arena in PAGE_SIZE-sized 85 * logical pages. 86 * No enforced maximum on amd64. 87 */ 88 #define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT) 89 #define NKMEMPAGES_MAX_UNLIMITED 1 90 91 /* 92 * XXXfvdl the PD* stuff is different from i386. 93 */ 94 /* 95 * Mach derived conversion macros 96 */ 97 #define x86_round_pdr(x) \ 98 ((((unsigned long)(x)) + (NBPD_L2 - 1)) & ~(NBPD_L2 - 1)) 99 #define x86_trunc_pdr(x) ((unsigned long)(x) & ~(NBPD_L2 - 1)) 100 #define x86_btod(x) ((unsigned long)(x) >> L2_SHIFT) 101 #define x86_dtob(x) ((unsigned long)(x) << L2_SHIFT) 102 #define x86_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET) 103 #define x86_trunc_page(x) ((unsigned long)(x) & ~PGOFSET) 104 #define x86_btop(x) ((unsigned long)(x) >> PGSHIFT) 105 #define x86_ptob(x) ((unsigned long)(x) << PGSHIFT) 106 107 #define btop(x) x86_btop(x) 108 #define ptob(x) x86_ptob(x) 109 110 #define mstohz(ms) ((ms + 0UL) * hz / 1000) 111 112 #else /* __x86_64__ */ 113 114 #include <i386/param.h> 115 116 #endif /* __x86_64__ */ 117