1/*	$NetBSD: kvm_powerpc64.c,v 1.3 2010/09/19 02:07:00 jym Exp $	*/
2
3/*
4 * Copyright (c) 2005 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Allen Briggs for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *      This product includes software developed for the NetBSD Project by
20 *      Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37/*-
38 * Copyright (C) 1996 Wolfgang Solfrank.
39 * Copyright (C) 1996 TooLs GmbH.
40 * All rights reserved.
41 *
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
44 * are met:
45 * 1. Redistributions of source code must retain the above copyright
46 *    notice, this list of conditions and the following disclaimer.
47 * 2. Redistributions in binary form must reproduce the above copyright
48 *    notice, this list of conditions and the following disclaimer in the
49 *    documentation and/or other materials provided with the distribution.
50 * 3. All advertising materials mentioning features or use of this software
51 *    must display the following acknowledgement:
52 *	This product includes software developed by TooLs GmbH.
53 * 4. The name of TooLs GmbH may not be used to endorse or promote products
54 *    derived from this software without specific prior written permission.
55 *
56 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
57 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
58 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
59 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
60 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
61 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
62 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
63 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
64 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
65 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
66 */
67
68/*
69 * PowerPC machine dependent routines for kvm.
70 */
71
72#include <sys/param.h>
73#include <sys/exec.h>
74#include <sys/types.h>
75
76#include <uvm/uvm_extern.h>
77
78#include <db.h>
79#include <limits.h>
80#include <kvm.h>
81#include <stdlib.h>
82#include <unistd.h>
83
84#include "kvm_private.h"
85
86#include <sys/kcore.h>
87#include <machine/kcore.h>
88
89#include <powerpc/spr.h>
90#include <powerpc/oea/bat.h>
91#include <powerpc/oea/pte.h>
92
93void
94_kvm_freevtop(kvm_t *kd)
95{
96	if (kd->vmst != 0)
97		free(kd->vmst);
98}
99
100/*ARGSUSED*/
101int
102_kvm_initvtop(kvm_t *kd)
103{
104
105	return 0;
106}
107
108#define SR_VSID_HASH_MASK	0x0007ffff
109
110#define HASH_MASK	0x0007ffff
111
112/*
113 * Translate a KVA to a PA
114 */
115int
116_kvm_kvatop(kvm_t *kd, vaddr_t va, paddr_t *pa)
117{
118	cpu_kcore_hdr_t	*cpu_kh;
119	uint32_t	pvr;
120
121	if (ISALIVE(kd)) {
122		_kvm_err(kd, 0, "vatop called in live kernel!");
123		return 0;
124	}
125
126	cpu_kh = kd->cpu_data;
127
128	pvr = (cpu_kh->pvr >> 16);
129
130
131	/* No hit -- no translation */
132	*pa = (u_long)~0UL;
133	return 0;
134}
135
136off_t
137_kvm_pa2off(kvm_t *kd, paddr_t pa)
138{
139	cpu_kcore_hdr_t	*cpu_kh;
140	phys_ram_seg_t	*ram;
141	off_t		off;
142	void		*e;
143
144	cpu_kh = kd->cpu_data;
145	e = (char *) kd->cpu_data + kd->cpu_dsize;
146        ram = (void *)((char *)(void *)cpu_kh + ALIGN(sizeof *cpu_kh));
147	off = kd->dump_off;
148	do {
149		if (pa >= ram->start && (pa - ram->start) < ram->size) {
150			return off + (pa - ram->start);
151		}
152		ram++;
153		off += ram->size;
154	} while ((void *) ram < e && ram->size);
155
156	_kvm_err(kd, 0, "pa2off failed for pa 0x%08lx\n", pa);
157	return (off_t) -1;
158}
159
160/*
161 * Machine-dependent initialization for ALL open kvm descriptors,
162 * not just those for a kernel crash dump.  Some architectures
163 * have to deal with these NOT being constants!  (i.e. m68k)
164 */
165int
166_kvm_mdopen(kvm_t *kd)
167{
168	uintptr_t max_uva;
169	extern struct ps_strings *__ps_strings;
170
171#if 0   /* XXX - These vary across powerpc machines... */
172	kd->usrstack = USRSTACK;
173	kd->min_uva = VM_MIN_ADDRESS;
174	kd->max_uva = VM_MAXUSER_ADDRESS;
175#endif
176	/* This is somewhat hack-ish, but it works. */
177	max_uva = (uintptr_t) (__ps_strings + 1);
178	kd->usrstack = max_uva;
179	kd->max_uva  = max_uva;
180	kd->min_uva  = 0;
181
182	return (0);
183}
184