/* * Copyright (c) 1988 University of Utah. * Copyright (c) 1982, 1990 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. * * 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. */ /*- * Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo, * Michael L. Finch, Bradley A. Grantham, and * Lawrence A. Kesteloot * All rights reserved. * * 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 Alice Group. * 4. The names of the Alice Group or any of its members may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``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 ALICE GROUP 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 $Hdr: pte.h 1.11 89/09/03$ * * from: @(#)pte.h 7.3 (Berkeley) 5/8/91 * $Id: pte.h,v 1.6 1994/06/29 04:55:57 briggs Exp $ */ #ifndef _MACHINE_PTE_H_ #define _MACHINE_PTE_H_ 1 /* * Mac hardware segment/page table entries */ struct ste { unsigned int sg_pfnum:20; /* page table frame number */ unsigned int :8; /* reserved at 0 */ unsigned int :1; /* reserved at 1 */ unsigned int sg_prot:1; /* write protect bit */ unsigned int sg_v:2; /* valid bits */ }; struct pte { unsigned int pg_pfnum:20; /* page frame number or 0 */ unsigned int :3; unsigned int pg_w:1; /* is wired */ unsigned int :1; /* reserved at zero */ unsigned int pg_ci:1; /* cache inhibit bit */ unsigned int pg_cm1:1; /* cache mode, lsb (68040) */ unsigned int pg_m:1; /* hardware modified (dirty) bit */ unsigned int pg_u:1; /* hardware used (reference) bit */ unsigned int pg_prot:1; /* write protect bit */ unsigned int pg_v:2; /* valid bit */ }; typedef struct ste st_entry_t; /* segment table entry */ typedef struct pte pt_entry_t; /* Mach page table entry */ #define PT_ENTRY_NULL ((pt_entry_t *) 0) #define ST_ENTRY_NULL ((st_entry_t *) 0) #define SG_V 0x00000002 /* segment is valid */ #define SG_NV 0x00000000 #define SG_PROT 0x00000004 /* access protection mask */ #define SG_RO 0x00000004 #define SG_RW 0x00000000 #define SG_FRAME 0xfffff000 #define SG_IMASK1 0xfe000000 #define SG_IMASK2 0x01fc0000 #define SG_040IMASK 0xfffc0000 #define SG_040PMASK 0x0003f000 #define SG_ISHIFT1 25 #define SG_040ISHIFT 18 #define SG_IMASK 0xffc00000 #define SG_PMASK 0x003ff000 #define SG_ISHIFT 22 #define SG_PSHIFT 12 #define PG_V 0x00000001 #define PG_NV 0x00000000 #define PG_PROT 0x00000004 #define PG_U 0x00000008 #define PG_M 0x00000010 #define PG_W 0x00000100 #define PG_RO 0x00000004 #define PG_RW 0x00000000 #define PG_CI 0x00000040 #define PG_CCB 0x00000020 #define PG_CIN 0x00000060 #define PG_FRAME 0xfffff000 #define PG_SHIFT 12 #define PG_PFNUM(x) (((x) & PG_FRAME) >> PG_SHIFT) #define MAC_040RTSIZE 512 /* root (level 1) table size */ #define MAC_040STSIZE 512 /* segment (level 2) table size */ #define MAC_040PTSIZE 256 /* page (level 3) table size */ #define MAC_STSIZE MAC_PAGE_SIZE /* segment table size */ #define MAC_MAX_PTSIZE MAC_SEG_SIZE /* max size of UPT */ #define MAC_MAX_KPTSIZE 0x100000 /* max memory to allocate to KPT */ #define MAC_PTBASE 0x60100000 /* UPT map base address */ #define MAC_PTMAXSIZE 0x70000000 /* UPT map maximum size */ /* * Kernel virtual address to page table entry and to physical address. */ #define kvtopte(va) \ (&Sysmap[((unsigned)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT]) #define kvtoste(va) \ (&Sysseg[((unsigned)(va) - VM_MIN_KERNEL_ADDRESS) >> SEGSHIFT]) #define ptetokv(pt) \ ((((pt_entry_t *)(pt) - Sysmap) << PGSHIFT) + VM_MIN_KERNEL_ADDRESS) #define kvtophys(va) \ ((kvtopte(va)->pg_pfnum << PGSHIFT) | ((int)(va) & PGOFSET)) #endif /* _MACHINE_PTE_H_ */