571ade5c16
amiga goes: config.new *and* /sys/scsi. clock code coerced into a single .c file adding an accurate usec delay(). disklabel.c updated to DTRT, code to write RDB's to be added soon. sbic (old scsi) converted over to new scsi and config this covers about 90% of users. Other drivers soon.
132 lines
4.9 KiB
C
132 lines
4.9 KiB
C
/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: pte.h 1.11 89/09/03$
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*
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* @(#)pte.h 7.3 (Berkeley) 5/8/91
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* $Id: pte.h,v 1.5 1994/05/08 05:54:00 chopps Exp $
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*/
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#ifndef _MACHINE_PTE_H_
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#define _MACHINE_PTE_H_
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/*
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* AMIGA hardware segment/page table entries
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*/
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struct ste {
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unsigned int sg_pfnum:20; /* page table frame number */
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unsigned int :8; /* reserved at 0 */
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unsigned int :1; /* reserved at 1 */
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unsigned int sg_prot:1; /* write protect bit */
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unsigned int sg_v:2; /* valid bits */
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};
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struct pte {
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unsigned int pg_pfnum:20; /* page frame number or 0 */
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unsigned int :3;
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unsigned int pg_w:1; /* is wired */
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unsigned int :1; /* reserved at zero */
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unsigned int pg_ci:1; /* cache inhibit bit */
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unsigned int pg_cm1:1; /* cache mode, lsb (68040) */
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unsigned int pg_m:1; /* hardware modified (dirty) bit */
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unsigned int pg_u:1; /* hardware used (reference) bit */
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unsigned int pg_prot:1; /* write protect bit */
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unsigned int pg_v:2; /* valid bit */
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};
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typedef struct ste st_entry_t; /* segment table entry */
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typedef struct pte pt_entry_t; /* Mach page table entry */
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#define PT_ENTRY_NULL ((pt_entry_t *) 0)
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#define ST_ENTRY_NULL ((st_entry_t *) 0)
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#define SG_V 0x00000002 /* segment is valid */
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#define SG_NV 0x00000000
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#define SG_PROT 0x00000004 /* access protection mask */
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#define SG_RO 0x00000004
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#define SG_RW 0x00000000
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#define SG_FRAME 0xffffe000
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#define SG_IMASK1 0xfe000000
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#define SG_IMASK2 0x01fc0000
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#define SG_040IMASK 0xfffc0000
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#define SG_040PMASK 0x0003e000
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#define SG_ISHIFT1 25
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#define SG_040ISHIFT 18
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#define SG_IMASK 0xff000000
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#define SG_PMASK 0x00ffe000
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#define SG_ISHIFT 24
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#define SG_PSHIFT 13
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#define PG_V 0x00000001
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#define PG_NV 0x00000000
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#define PG_PROT 0x00000004
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#define PG_U 0x00000008
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#define PG_M 0x00000010
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#define PG_W 0x00000100
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#define PG_RO 0x00000004
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#define PG_RW 0x00000000
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#define PG_CI 0x00000040
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#define PG_CC 0x00000020 /* Cachable, copyback */
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#define PG_CIN 0x00000060 /* Cache inhibited, nonserialized */
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#define PG_FRAME 0xffffe000
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#define PG_SHIFT 13
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#define PG_PFNUM(x) (((x) & PG_FRAME) >> PG_SHIFT)
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#define AMIGA_040RTSIZE 512 /* root (level 1) table size */
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#define AMIGA_040STSIZE 512 /* segment (level 2) table size */
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#define AMIGA_040PTSIZE 128 /* page (level 3) table size */
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#define AMIGA_STSIZE 1024 /* segment table size */
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#define AMIGA_MAX_PTSIZE (2*1024*1024) /* max size of UPT */
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/* XXX probably have to reduce this to 512k */
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#define AMIGA_MAX_KPTSIZE 0x100000 /* max memory to allocate to KPT */
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#define AMIGA_PTBASE 0x10000000 /* UPT map base address */
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#define AMIGA_PTMAXSIZE 0x70000000 /* UPT map maximum size */
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/*
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* Kernel virtual address to page table entry and to physical address.
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*/
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#define kvtopte(va) \
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(&Sysmap[((unsigned)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT])
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#define ptetokv(pt) \
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((((pt_entry_t *)(pt) - Sysmap) << PGSHIFT) + VM_MIN_KERNEL_ADDRESS)
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#define kvtophys(va) \
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((kvtopte(va)->pg_pfnum << PGSHIFT) | ((int)(va) & PGOFSET))
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#endif /* !_MACHINE_PTE_H_ */
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