diff options
Diffstat (limited to 'sys/arch/arc/include/pmap.h')
| -rw-r--r-- | sys/arch/arc/include/pmap.h | 121 |
1 files changed, 3 insertions, 118 deletions
diff --git a/sys/arch/arc/include/pmap.h b/sys/arch/arc/include/pmap.h index 45ebf633f54..b8ed772f22c 100644 --- a/sys/arch/arc/include/pmap.h +++ b/sys/arch/arc/include/pmap.h @@ -1,120 +1,5 @@ -/* $OpenBSD: pmap.h,v 1.3 1997/04/19 17:19:58 pefo Exp $ */ +/* $OpenBSD: pmap.h,v 1.4 1998/01/28 13:46:22 pefo Exp $ */ -/* - * Copyright (c) 1987 Carnegie-Mellon University - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Ralph Campbell. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * from: @(#)pmap.h 8.1 (Berkeley) 6/10/93 - */ +/* Use Mips generic include file */ -#ifndef _PMAP_MACHINE_ -#define _PMAP_MACHINE_ - -/* - * The user address space is 2Gb (0x0 - 0x80000000). - * User programs are laid out in memory as follows: - * address - * USRTEXT 0x00001000 - * USRDATA USRTEXT + text_size - * USRSTACK 0x7FFFFFFF - * - * The user address space is mapped using a two level structure where - * virtual address bits 30..22 are used to index into a segment table which - * points to a page worth of PTEs (4096 page can hold 1024 PTEs). - * Bits 21..12 are then used to index a PTE which describes a page within - * a segment. - * - * The wired entries in the TLB will contain the following: - * 0-1 (UPAGES) for curproc user struct and kernel stack. - * - * Note: The kernel doesn't use the same data structures as user programs. - * All the PTE entries are stored in a single array in Sysmap which is - * dynamically allocated at boot time. - */ - -#define mips_trunc_seg(x) ((vm_offset_t)(x) & ~SEGOFSET) -#define mips_round_seg(x) (((vm_offset_t)(x) + SEGOFSET) & ~SEGOFSET) -#define pmap_segmap(m, v) ((m)->pm_segtab->seg_tab[((v) >> SEGSHIFT)]) - -#define PMAP_SEGTABSIZE 512 - -union pt_entry; - -struct segtab { - union pt_entry *seg_tab[PMAP_SEGTABSIZE]; -}; - -/* - * Machine dependent pmap structure. - */ -typedef struct pmap { - int pm_count; /* pmap reference count */ - simple_lock_data_t pm_lock; /* lock on pmap */ - struct pmap_statistics pm_stats; /* pmap statistics */ - int pm_tlbpid; /* address space tag */ - u_int pm_tlbgen; /* TLB PID generation number */ - struct segtab *pm_segtab; /* pointers to pages of PTEs */ -} *pmap_t; - -/* - * Defines for pmap_attributes[phys_mach_page]; - */ -#define PMAP_ATTR_MOD 0x01 /* page has been modified */ -#define PMAP_ATTR_REF 0x02 /* page has been referenced */ - -#ifdef _KERNEL -extern char *pmap_attributes; /* reference and modify bits */ -extern struct pmap kernel_pmap_store; - -#define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) -#define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) -#define pmap_kernel() (&kernel_pmap_store) - -#define PMAP_PREFER(pa, va) pmap_prefer((pa), (va)) - -void pmap_prefer __P((vm_offset_t, vm_offset_t *)); - -void pmap_bootstrap __P((vm_offset_t)); -void pmap_zero_page __P((vm_offset_t)); -int pmap_is_page_ro __P(( pmap_t, vm_offset_t, int)); -int pmap_alloc_tlbpid __P((struct proc *)); -int pmap_remove_pv __P((pmap_t, vm_offset_t, vm_offset_t)); -int pmap_is_pa_mapped __P((vm_offset_t)); -vm_offset_t pmap_pa_to_va __P((vm_offset_t)); -void pmap_page_cache __P((vm_offset_t, int));; - -#endif /* _KERNEL */ - -#endif /* _PMAP_MACHINE_ */ +#include <mips/pmap.h> |