mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-16 10:20:30 +00:00
98 lines
3.0 KiB
C
98 lines
3.0 KiB
C
/* $FreeBSD$ */
|
|
/* From: NetBSD: pte.h,v 1.10 1997/09/02 19:07:22 thorpej Exp */
|
|
|
|
/*
|
|
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Chris G. Demetriou
|
|
*
|
|
* Permission to use, copy, modify and distribute this software and
|
|
* its documentation is hereby granted, provided that both the copyright
|
|
* notice and this permission notice appear in all copies of the
|
|
* software, derivative works or modified versions, and any portions
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
*
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
|
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
*
|
|
* Carnegie Mellon requests users of this software to return to
|
|
*
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
|
* School of Computer Science
|
|
* Carnegie Mellon University
|
|
* Pittsburgh PA 15213-3890
|
|
*
|
|
* any improvements or extensions that they make and grant Carnegie the
|
|
* rights to redistribute these changes.
|
|
*/
|
|
|
|
/*
|
|
* Alpha page table entry.
|
|
* Things which are in the VMS PALcode but not in the OSF PALcode
|
|
* are marked with "(VMS)".
|
|
*
|
|
* This information derived from pp. (II) 3-3 - (II) 3-6 and
|
|
* (III) 3-3 - (III) 3-5 of the "Alpha Architecture Reference Manual" by
|
|
* Richard L. Sites.
|
|
*/
|
|
|
|
/*
|
|
* Alpha Page Table Entry
|
|
*/
|
|
|
|
#include <machine/alpha_cpu.h>
|
|
|
|
typedef alpha_pt_entry_t pt_entry_t;
|
|
|
|
#define PT_ENTRY_NULL ((pt_entry_t *) 0)
|
|
#define PTESHIFT 3 /* pte size == 1 << PTESHIFT */
|
|
|
|
#define PG_V ALPHA_PTE_VALID
|
|
#define PG_NV 0
|
|
#define PG_FOR ALPHA_PTE_FAULT_ON_READ
|
|
#define PG_FOW ALPHA_PTE_FAULT_ON_WRITE
|
|
#define PG_FOE ALPHA_PTE_FAULT_ON_EXECUTE
|
|
#define PG_ASM ALPHA_PTE_ASM
|
|
#define PG_GH ALPHA_PTE_GRANULARITY
|
|
#define PG_KRE ALPHA_PTE_KR
|
|
#define PG_URE ALPHA_PTE_UR
|
|
#define PG_KWE ALPHA_PTE_KW
|
|
#define PG_UWE ALPHA_PTE_UW
|
|
#define PG_PROT ALPHA_PTE_PROT
|
|
#define PG_RSVD 0x000000000000cc80 /* Reserved fpr hardware */
|
|
#define PG_WIRED 0x0000000000010000 /* Wired. [SOFTWARE] */
|
|
#define PG_FRAME ALPHA_PTE_RAME
|
|
#define PG_SHIFT 32
|
|
#define PG_PFNUM(x) ALPHA_PTE_TO_PFN(x)
|
|
|
|
#if 0 /* XXX NOT HERE */
|
|
#define K0SEG_BEGIN 0xfffffc0000000000 /* unmapped, cached */
|
|
#define K0SEG_END 0xfffffe0000000000
|
|
#define PHYS_UNCACHED 0x0000000040000000
|
|
#endif
|
|
|
|
#ifndef _LOCORE
|
|
#if 0 /* XXX NOT HERE */
|
|
#define k0segtophys(x) ((vm_offset_t)(x) & 0x00000003ffffffff)
|
|
#define phystok0seg(x) ((vm_offset_t)(x) | K0SEG_BEGIN)
|
|
|
|
#define phystouncached(x) ((vm_offset_t)(x) | PHYS_UNCACHED)
|
|
#define uncachedtophys(x) ((vm_offset_t)(x) & ~PHYS_UNCACHED)
|
|
#endif
|
|
|
|
#define PTEMASK (NPTEPG - 1)
|
|
#define vatopte(va) (((va) >> PGSHIFT) & PTEMASK)
|
|
#define vatoste(va) (((va) >> SEGSHIFT) & PTEMASK)
|
|
#define kvtol1pte(va) \
|
|
(((vm_offset_t)(va) >> (PGSHIFT + 2*(PGSHIFT-PTESHIFT))) & PTEMASK)
|
|
|
|
#define vatopa(va) \
|
|
((PG_PFNUM(*kvtopte(va)) << PGSHIFT) | ((vm_offset_t)(va) & PGOFSET))
|
|
|
|
#define ALPHA_STSIZE ((u_long)PAGE_SIZE) /* 8k */
|
|
#define ALPHA_MAX_PTSIZE ((u_long)(NPTEPG * NBPG)) /* 8M */
|
|
|
|
#endif
|