1 /* $NetBSD: param.h,v 1.22 2017/06/14 12:27:24 maxv Exp $ */ 2 3 #ifdef __x86_64__ 4 5 #ifndef XEN 6 /* Must be defined before cpu.h */ 7 #define MAXCPUS 256 8 #endif 9 10 #ifdef _KERNEL 11 #include <machine/cpu.h> 12 #endif 13 14 #define _MACHINE amd64 15 #define MACHINE "amd64" 16 #define _MACHINE_ARCH x86_64 17 #define MACHINE_ARCH "x86_64" 18 #define MID_MACHINE MID_X86_64 19 20 #define ALIGNED_POINTER(p,t) 1 21 22 #define ALIGNBYTES32 (sizeof(int) - 1) 23 #define ALIGN32(p) (((u_long)(p) + ALIGNBYTES32) &~ALIGNBYTES32) 24 25 #define PGSHIFT 12 /* LOG2(NBPG) */ 26 #define NBPG (1 << PGSHIFT) /* bytes/page */ 27 #define PGOFSET (NBPG-1) /* byte offset into page */ 28 #define NPTEPG (NBPG/(sizeof (pt_entry_t))) 29 30 #define MAXIOMEM 0xffffffffffff 31 32 /* 33 * Maximum physical memory supported by the implementation. 34 */ 35 #define MAXPHYSMEM 0x100000000000ULL /* 16TB */ 36 37 /* 38 * XXXfvdl change this (after bootstrap) to take # of bits from 39 * config info into account. 40 */ 41 #define KERNBASE 0xffffffff80000000 /* start of kernel virtual space */ 42 #define KERNTEXTOFF 0xffffffff80200000 /* start of kernel text */ 43 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 44 45 #define KERNTEXTOFF_HI 0xffffffff 46 #define KERNTEXTOFF_LO 0x80200000 47 48 #define KERNBASE_HI 0xffffffff 49 #define KERNBASE_LO 0x80000000 50 51 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 52 #define DEV_BSIZE (1 << DEV_BSHIFT) 53 #define BLKDEV_IOSIZE 2048 54 #ifndef MAXPHYS 55 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 56 #endif 57 58 #define SSIZE 1 /* initial stack size/NBPG */ 59 #define SINCR 1 /* increment of stack/NBPG */ 60 #ifdef DIAGNOSTIC 61 #define UPAGES 4 /* pages of u-area (1 for redzone) */ 62 #else 63 #define UPAGES 3 /* pages of u-area */ 64 #endif 65 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 66 #define INTRSTACKSIZE 4096 67 68 #ifndef MSGBUFSIZE 69 #define MSGBUFSIZE (8*NBPG) /* default message buffer size */ 70 #endif 71 72 /* 73 * Constants related to network buffer management. 74 * MCLBYTES must be no larger than NBPG (the software page size), and, 75 * on machines that exchange pages of input or output buffers with mbuf 76 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 77 * of the hardware page size. 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 #ifndef NFS_RSIZE 89 #define NFS_RSIZE 32768 90 #endif 91 #ifndef NFS_WSIZE 92 #define NFS_WSIZE 32768 93 #endif 94 95 /* 96 * Minimum size of the kernel kmem_arena in PAGE_SIZE-sized 97 * logical pages. 98 * No enforced maximum on amd64. 99 */ 100 #define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT) 101 #define NKMEMPAGES_MAX_UNLIMITED 1 102 103 /* 104 * XXXfvdl the PD* stuff is different from i386. 105 */ 106 /* 107 * Mach derived conversion macros 108 */ 109 #define x86_round_pdr(x) \ 110 ((((unsigned long)(x)) + (NBPD_L2 - 1)) & ~(NBPD_L2 - 1)) 111 #define x86_trunc_pdr(x) ((unsigned long)(x) & ~(NBPD_L2 - 1)) 112 #define x86_btod(x) ((unsigned long)(x) >> L2_SHIFT) 113 #define x86_dtob(x) ((unsigned long)(x) << L2_SHIFT) 114 #define x86_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET) 115 #define x86_trunc_page(x) ((unsigned long)(x) & ~PGOFSET) 116 #define x86_btop(x) ((unsigned long)(x) >> PGSHIFT) 117 #define x86_ptob(x) ((unsigned long)(x) << PGSHIFT) 118 119 #define btop(x) x86_btop(x) 120 #define ptob(x) x86_ptob(x) 121 122 #define mstohz(ms) ((ms + 0UL) * hz / 1000) 123 124 #else /* __x86_64__ */ 125 126 #include <i386/param.h> 127 128 #endif /* __x86_64__ */ 129