diff options
Diffstat (limited to 'sys/arch/pmax/include/mips1_pte.h')
| -rw-r--r-- | sys/arch/pmax/include/mips1_pte.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/sys/arch/pmax/include/mips1_pte.h b/sys/arch/pmax/include/mips1_pte.h new file mode 100644 index 00000000000..220d93fa9f9 --- /dev/null +++ b/sys/arch/pmax/include/mips1_pte.h @@ -0,0 +1,97 @@ +/* $NetBSD: mips1_pte.h,v 1.8 1996/10/13 09:54:43 jonathan Exp $ */ + +/* + * Copyright (c) 1988 University of Utah. + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * the Systems Programming Group of the University of Utah Computer + * Science Department and 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: Utah Hdr: pte.h 1.11 89/09/03 + * + * @(#)pte.h 8.1 (Berkeley) 6/10/93 + */ + +/* + * R2000 hardware page table entry + */ + +#ifndef _LOCORE +struct pte { +#if BYTE_ORDER == BIG_ENDIAN +unsigned int pg_pfnum:20, /* HW: core page frame number or 0 */ + pg_n:1, /* HW: non-cacheable bit */ + pg_m:1, /* HW: modified (dirty) bit */ + pg_v:1, /* HW: valid bit */ + pg_g:1, /* HW: ignore pid bit */ + :4, + pg_swapm:1, /* SW: page must be forced to swap */ + pg_fod:1, /* SW: is fill on demand (=0) */ + pg_prot:2; /* SW: access control */ +#endif +#if BYTE_ORDER == LITTLE_ENDIAN +unsigned int pg_prot:2, /* SW: access control */ + pg_fod:1, /* SW: is fill on demand (=0) */ + pg_swapm:1, /* SW: page must be forced to swap */ + :4, + pg_g:1, /* HW: ignore pid bit */ + pg_v:1, /* HW: valid bit */ + pg_m:1, /* HW: modified (dirty) bit */ + pg_n:1, /* HW: non-cacheable bit */ + pg_pfnum:20; /* HW: core page frame number or 0 */ +#endif +}; + +typedef union pt_entry { + unsigned int pt_entry; /* for copying, etc. */ + struct pte pt_pte; /* for getting to bits by name */ +} pt_entry_t; /* Mach page table entry */ +#endif /* _LOCORE */ + +#define PT_ENTRY_NULL ((pt_entry_t *) 0) + +#define PG_PROT 0x00000003 +#define PG_RW 0x00000000 +#define PG_RO 0x00000001 +#define PG_WIRED 0x00000002 +#define PG_G 0x00000100 +#define PG_V 0x00000200 +#define PG_NV 0x00000000 +#define PG_M 0x00000400 +#define PG_N 0x00000800 +#define PG_FRAME 0xfffff000 +#define PG_SHIFT 12 +#define PG_PFNUM(x) (((x) & PG_FRAME) >> PG_SHIFT) + +#define PTE_TO_PADDR(pte) ((unsigned)(pte) & PG_FRAME) +#define PAGE_IS_RDONLY(pte,va) ((pte) & PG_RO) |