pte.h revision 1.10.2.2
1 1.10.2.2 thorpej /* $NetBSD: pte.h,v 1.10.2.2 1997/09/02 19:07:23 thorpej Exp $ */ 2 1.10.2.2 thorpej 3 1.10.2.2 thorpej /* 4 1.10.2.2 thorpej * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 5 1.10.2.2 thorpej * All rights reserved. 6 1.10.2.2 thorpej * 7 1.10.2.2 thorpej * Author: Chris G. Demetriou 8 1.10.2.2 thorpej * 9 1.10.2.2 thorpej * Permission to use, copy, modify and distribute this software and 10 1.10.2.2 thorpej * its documentation is hereby granted, provided that both the copyright 11 1.10.2.2 thorpej * notice and this permission notice appear in all copies of the 12 1.10.2.2 thorpej * software, derivative works or modified versions, and any portions 13 1.10.2.2 thorpej * thereof, and that both notices appear in supporting documentation. 14 1.10.2.2 thorpej * 15 1.10.2.2 thorpej * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 1.10.2.2 thorpej * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 1.10.2.2 thorpej * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 1.10.2.2 thorpej * 19 1.10.2.2 thorpej * Carnegie Mellon requests users of this software to return to 20 1.10.2.2 thorpej * 21 1.10.2.2 thorpej * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 22 1.10.2.2 thorpej * School of Computer Science 23 1.10.2.2 thorpej * Carnegie Mellon University 24 1.10.2.2 thorpej * Pittsburgh PA 15213-3890 25 1.10.2.2 thorpej * 26 1.10.2.2 thorpej * any improvements or extensions that they make and grant Carnegie the 27 1.10.2.2 thorpej * rights to redistribute these changes. 28 1.10.2.2 thorpej */ 29 1.10.2.2 thorpej 30 1.10.2.2 thorpej /* 31 1.10.2.2 thorpej * Alpha page table entry. 32 1.10.2.2 thorpej * Things which are in the VMS PALcode but not in the OSF PALcode 33 1.10.2.2 thorpej * are marked with "(VMS)". 34 1.10.2.2 thorpej * 35 1.10.2.2 thorpej * This information derived from pp. (II) 3-3 - (II) 3-6 and 36 1.10.2.2 thorpej * (III) 3-3 - (III) 3-5 of the "Alpha Architecture Reference Manual" by 37 1.10.2.2 thorpej * Richard L. Sites. 38 1.10.2.2 thorpej */ 39 1.10.2.2 thorpej 40 1.10.2.2 thorpej /* 41 1.10.2.2 thorpej * Alpha Page Table Entry 42 1.10.2.2 thorpej */ 43 1.10.2.2 thorpej 44 1.10.2.2 thorpej #include <machine/alpha_cpu.h> 45 1.10.2.2 thorpej 46 1.10.2.2 thorpej typedef alpha_pt_entry_t pt_entry_t; 47 1.10.2.2 thorpej 48 1.10.2.2 thorpej #define PT_ENTRY_NULL ((pt_entry_t *) 0) 49 1.10.2.2 thorpej #define PTESHIFT 3 /* pte size == 1 << PTESHIFT */ 50 1.10.2.2 thorpej 51 1.10.2.2 thorpej #define PG_V ALPHA_PTE_VALID 52 1.10.2.2 thorpej #define PG_NV 0 53 1.10.2.2 thorpej #define PG_FOR ALPHA_PTE_FAULT_ON_READ 54 1.10.2.2 thorpej #define PG_FOW ALPHA_PTE_FAULT_ON_WRITE 55 1.10.2.2 thorpej #define PG_FOE ALPHA_PTE_FAULT_ON_EXECUTE 56 1.10.2.2 thorpej #define PG_ASM ALPHA_PTE_ASM 57 1.10.2.2 thorpej #define PG_GH ALPHA_PTE_GRANULARITY 58 1.10.2.2 thorpej #define PG_KRE ALPHA_PTE_KR 59 1.10.2.2 thorpej #define PG_URE ALPHA_PTE_UR 60 1.10.2.2 thorpej #define PG_KWE ALPHA_PTE_KW 61 1.10.2.2 thorpej #define PG_UWE ALPHA_PTE_UW 62 1.10.2.2 thorpej #define PG_PROT ALPHA_PTE_PROT 63 1.10.2.2 thorpej #define PG_RSVD 0x000000000000cc80 /* Reserved fpr hardware */ 64 1.10.2.2 thorpej #define PG_WIRED 0x0000000000010000 /* Wired. [SOFTWARE] */ 65 1.10.2.2 thorpej #define PG_FRAME ALPHA_PTE_RAME 66 1.10.2.2 thorpej #define PG_SHIFT 32 67 1.10.2.2 thorpej #define PG_PFNUM(x) ALPHA_PTE_TO_PFN(x) 68 1.10.2.2 thorpej 69 1.10.2.2 thorpej #if 0 /* XXX NOT HERE */ 70 1.10.2.2 thorpej #define K0SEG_BEGIN 0xfffffc0000000000 /* unmapped, cached */ 71 1.10.2.2 thorpej #define K0SEG_END 0xfffffe0000000000 72 1.10.2.2 thorpej #define PHYS_UNCACHED 0x0000000040000000 73 1.10.2.2 thorpej #endif 74 1.10.2.2 thorpej 75 1.10.2.2 thorpej #ifndef _LOCORE 76 1.10.2.2 thorpej #if 0 /* XXX NOT HERE */ 77 1.10.2.2 thorpej #define k0segtophys(x) ((vm_offset_t)(x) & 0x00000003ffffffff) 78 1.10.2.2 thorpej #define phystok0seg(x) ((vm_offset_t)(x) | K0SEG_BEGIN) 79 1.10.2.2 thorpej 80 1.10.2.2 thorpej #define phystouncached(x) ((vm_offset_t)(x) | PHYS_UNCACHED) 81 1.10.2.2 thorpej #define uncachedtophys(x) ((vm_offset_t)(x) & ~PHYS_UNCACHED) 82 1.10.2.2 thorpej #endif 83 1.10.2.2 thorpej 84 1.10.2.2 thorpej #define PTEMASK (NPTEPG - 1) 85 1.10.2.2 thorpej #define vatopte(va) (((va) >> PGSHIFT) & PTEMASK) 86 1.10.2.2 thorpej #define vatoste(va) (((va) >> SEGSHIFT) & PTEMASK) 87 1.10.2.2 thorpej #define kvtol1pte(va) \ 88 1.10.2.2 thorpej (((vm_offset_t)(va) >> (PGSHIFT + 2*(PGSHIFT-PTESHIFT))) & PTEMASK) 89 1.10.2.2 thorpej 90 1.10.2.2 thorpej #define vatopa(va) \ 91 1.10.2.2 thorpej ((PG_PFNUM(*kvtopte(va)) << PGSHIFT) | ((vm_offset_t)(va) & PGOFSET)) 92 1.10.2.2 thorpej 93 1.10.2.2 thorpej #define ALPHA_STSIZE ((u_long)NBPG) /* 8k */ 94 1.10.2.2 thorpej #define ALPHA_MAX_PTSIZE ((u_long)(NPTEPG * NBPG)) /* 8M */ 95 1.10.2.2 thorpej 96 1.10.2.2 thorpej #ifdef _KERNEL 97 1.10.2.2 thorpej /* 98 1.10.2.2 thorpej * Kernel virtual address to Sysmap entry and visa versa. 99 1.10.2.2 thorpej */ 100 1.10.2.2 thorpej #define kvtopte(va) \ 101 1.10.2.2 thorpej (Sysmap + (((vm_offset_t)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT)) 102 1.10.2.2 thorpej #define ptetokv(pte) \ 103 1.10.2.2 thorpej ((((pt_entry_t *)(pte) - Sysmap) << PGSHIFT) + VM_MIN_KERNEL_ADDRESS) 104 1.10.2.2 thorpej 105 1.10.2.2 thorpej extern pt_entry_t *Lev1map; /* Alpha Level One page table */ 106 1.10.2.2 thorpej extern pt_entry_t *Sysmap; /* kernel pte table */ 107 1.10.2.2 thorpej extern vm_size_t Sysmapsize; /* number of pte's in Sysmap */ 108 1.10.2.2 thorpej #endif 109 1.10.2.2 thorpej #endif 110
Indexes created Tue Oct 28 02:10:10 GMT 2025