| 1 | /* $NetBSD: param.h,v 1.19 2015/10/27 22:28:56 mrg 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 | /* |
| 31 | * XXXfvdl change this (after bootstrap) to take # of bits from |
| 32 | * config info into account. |
| 33 | */ |
| 34 | #define KERNBASE 0xffffffff80000000 /* start of kernel virtual space */ |
| 35 | #define KERNTEXTOFF 0xffffffff80100000 /* start of kernel text */ |
| 36 | #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) |
| 37 | |
| 38 | #define KERNTEXTOFF_HI 0xffffffff |
| 39 | #define KERNTEXTOFF_LO 0x80100000 |
| 40 | |
| 41 | #define KERNBASE_HI 0xffffffff |
| 42 | #define KERNBASE_LO 0x80000000 |
| 43 | |
| 44 | #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ |
| 45 | #define DEV_BSIZE (1 << DEV_BSHIFT) |
| 46 | #define BLKDEV_IOSIZE 2048 |
| 47 | #ifndef MAXPHYS |
| 48 | #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ |
| 49 | #endif |
| 50 | |
| 51 | #define SSIZE 1 /* initial stack size/NBPG */ |
| 52 | #define SINCR 1 /* increment of stack/NBPG */ |
| 53 | #ifdef DIAGNOSTIC |
| 54 | #define UPAGES 4 /* pages of u-area (1 for redzone) */ |
| 55 | #else |
| 56 | #define UPAGES 3 /* pages of u-area */ |
| 57 | #endif |
| 58 | #define USPACE (UPAGES * NBPG) /* total size of u-area */ |
| 59 | #define INTRSTACKSIZE 4096 |
| 60 | |
| 61 | #ifndef MSGBUFSIZE |
| 62 | #define MSGBUFSIZE (8*NBPG) /* default message buffer size */ |
| 63 | #endif |
| 64 | |
| 65 | /* |
| 66 | * Constants related to network buffer management. |
| 67 | * MCLBYTES must be no larger than NBPG (the software page size), and, |
| 68 | * on machines that exchange pages of input or output buffers with mbuf |
| 69 | * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple |
| 70 | * of the hardware page size. |
| 71 | */ |
| 72 | #define MSIZE 512 /* size of an mbuf */ |
| 73 | |
| 74 | #ifndef MCLSHIFT |
| 75 | #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ |
| 76 | /* 2K cluster can hold Ether frame */ |
| 77 | #endif /* MCLSHIFT */ |
| 78 | |
| 79 | #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ |
| 80 | |
| 81 | #ifndef NFS_RSIZE |
| 82 | #define NFS_RSIZE 32768 |
| 83 | #endif |
| 84 | #ifndef NFS_WSIZE |
| 85 | #define NFS_WSIZE 32768 |
| 86 | #endif |
| 87 | |
| 88 | /* |
| 89 | * Minimum size of the kernel kmem_arena in PAGE_SIZE-sized |
| 90 | * logical pages. |
| 91 | * No enforced maximum on amd64. |
| 92 | */ |
| 93 | #define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT) |
| 94 | #define NKMEMPAGES_MAX_UNLIMITED 1 |
| 95 | |
| 96 | /* |
| 97 | * XXXfvdl the PD* stuff is different from i386. |
| 98 | */ |
| 99 | /* |
| 100 | * Mach derived conversion macros |
| 101 | */ |
| 102 | #define x86_round_pdr(x) \ |
| 103 | ((((unsigned long)(x)) + (NBPD_L2 - 1)) & ~(NBPD_L2 - 1)) |
| 104 | #define x86_trunc_pdr(x) ((unsigned long)(x) & ~(NBPD_L2 - 1)) |
| 105 | #define x86_btod(x) ((unsigned long)(x) >> L2_SHIFT) |
| 106 | #define x86_dtob(x) ((unsigned long)(x) << L2_SHIFT) |
| 107 | #define x86_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET) |
| 108 | #define x86_trunc_page(x) ((unsigned long)(x) & ~PGOFSET) |
| 109 | #define x86_btop(x) ((unsigned long)(x) >> PGSHIFT) |
| 110 | #define x86_ptob(x) ((unsigned long)(x) << PGSHIFT) |
| 111 | |
| 112 | #define btop(x) x86_btop(x) |
| 113 | #define ptob(x) x86_ptob(x) |
| 114 | |
| 115 | #define mstohz(ms) ((ms + 0UL) * hz / 1000) |
| 116 | |
| 117 | #else /* __x86_64__ */ |
| 118 | |
| 119 | #include <i386/param.h> |
| 120 | |
| 121 | #endif /* __x86_64__ */ |
| 122 | |