1 /* $NetBSD: kvm_sun3.c,v 1.11 2003/05/16 10:24:56 wiz Exp $ */
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software developed by the Computer Systems
8 * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
9 * BG 91-66 and contributed to Berkeley.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include <sys/cdefs.h>
37 #if defined(LIBC_SCCS) && !defined(lint)
39 static char sccsid
[] = "@(#)kvm_sparc.c 8.1 (Berkeley) 6/4/93";
41 __RCSID("$NetBSD: kvm_sun3.c,v 1.11 2003/05/16 10:24:56 wiz Exp $");
43 #endif /* LIBC_SCCS and not lint */
46 * Sun3 machine dependent routines for kvm.
48 * Note: This file has to build on ALL m68k machines,
49 * so do NOT include any <machine / *.h> files here.
52 #include <sys/types.h>
53 #include <sys/kcore.h>
61 #include <m68k/kcore.h>
63 #include "kvm_private.h"
66 int _kvm_sun3_initvtop
__P((kvm_t
*));
67 void _kvm_sun3_freevtop
__P((kvm_t
*));
68 int _kvm_sun3_kvatop
__P((kvm_t
*, u_long
, u_long
*));
69 off_t _kvm_sun3_pa2off
__P((kvm_t
*, u_long
));
71 struct kvm_ops _kvm_ops_sun3
= {
77 #define _kvm_pg_pa(v, s, pte) \
78 (((pte) & (s)->pg_frame) << (v)->pgshift)
80 #define _kvm_va_segnum(s, x) \
81 ((u_int)(x) >> (s)->segshift)
82 #define _kvm_pte_num_mask(v) \
84 #define _kvm_va_pte_num(v, va) \
85 (((va) & _kvm_pte_num_mask((v))) >> (v)->pgshift)
88 * XXX Re-define these here, no other place for them.
90 #define NKSEG 256 /* kernel segmap entries */
91 #define NPAGSEG 16 /* pages per segment */
93 /* Finally, our local stuff... */
94 struct private_vmstate
{
95 /* Page Map Entry Group (PMEG) */
96 int pmeg
[NKSEG
][NPAGSEG
];
100 * Prepare for translation of kernel virtual addresses into offsets
101 * into crash dump files. We use the MMU specific goop written at the
102 * beginning of a crash dump by dumpsys()
103 * Note: sun3 MMU specific!
106 _kvm_sun3_initvtop(kd
)
109 cpu_kcore_hdr_t
*h
= kd
->cpu_data
;
113 p
+= (h
->page_size
- sizeof(kcore_seg_t
));
114 kd
->vmst
->private = p
;
120 _kvm_sun3_freevtop(kd
)
123 /* This was set by pointer arithmetic, not allocation. */
124 kd
->vmst
->private = (void*)0;
128 * Translate a kernel virtual address to a physical address using the
129 * mapping information in kd->vm. Returns the result in pa, and returns
130 * the number of bytes that are contiguously available from this
131 * physical address. This routine is used only for crash dumps.
134 _kvm_sun3_kvatop(kd
, va
, pap
)
139 cpu_kcore_hdr_t
*h
= kd
->cpu_data
;
140 struct sun3_kcore_hdr
*s
= &h
->un
._sun3
;
141 struct vmstate
*v
= kd
->vmst
;
142 struct private_vmstate
*pv
= v
->private;
144 u_int segnum
, sme
, ptenum
;
148 _kvm_err(kd
, 0, "vatop called in live kernel!");
152 if (va
< h
->kernbase
) {
153 _kvm_err(kd
, 0, "not a kernel address");
158 * Get the segmap entry (sme) from the kernel segmap.
159 * Note: only have segmap entries from KERNBASE to end.
161 segnum
= _kvm_va_segnum(s
, va
- h
->kernbase
);
162 ptenum
= _kvm_va_pte_num(v
, va
);
163 offset
= va
& v
->pgofset
;
165 /* The segmap entry selects a PMEG. */
166 sme
= s
->ksegmap
[segnum
];
167 pte
= pv
->pmeg
[sme
][ptenum
];
169 if ((pte
& (s
)->pg_valid
) == 0) {
170 _kvm_err(kd
, 0, "page not valid (VA=0x%lx)", va
);
173 pa
= _kvm_pg_pa(v
, s
, pte
) + offset
;
176 return (h
->page_size
- offset
);
180 * Translate a physical address to a file-offset in the crash dump.
183 _kvm_sun3_pa2off(kd
, pa
)
187 return(kd
->dump_off
+ pa
);