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/* $NetBSD: kvm_sun3x.c,v 1.12 2011/09/14 12:37:55 christos Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Gordon W. Ross.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)kvm_sparc.c 8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: kvm_sun3x.c,v 1.12 2011/09/14 12:37:55 christos Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
/*
* Sun3x machine dependent routines for kvm.
*
* Note: This file has to build on ALL m68k machines,
* so do NOT include any <machine / *.h> files here.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/kcore.h>
#include <unistd.h>
#include <limits.h>
#include <nlist.h>
#include <kvm.h>
#include <db.h>
#include <m68k/kcore.h>
#include "kvm_private.h"
#include "kvm_m68k.h"
int _kvm_sun3x_initvtop(kvm_t *);
void _kvm_sun3x_freevtop(kvm_t *);
int _kvm_sun3x_kvatop (kvm_t *, vaddr_t, paddr_t *);
off_t _kvm_sun3x_pa2off (kvm_t *, paddr_t);
struct kvm_ops _kvm_ops_sun3x = {
_kvm_sun3x_initvtop,
_kvm_sun3x_freevtop,
_kvm_sun3x_kvatop,
_kvm_sun3x_pa2off };
#define _kvm_kvas_size(h) \
(-((h)->kernbase))
#define _kvm_nkptes(h, v) \
(_kvm_kvas_size((h)) >> (v)->pgshift)
#define _kvm_pg_pa(pte, h) \
((pte) & (h)->pg_frame)
/*
* Prepare for translation of kernel virtual addresses into offsets
* into crash dump files. Nothing to do here.
*/
int
_kvm_sun3x_initvtop(kvm_t *kd)
{
return 0;
}
void
_kvm_sun3x_freevtop(kvm_t *kd)
{
}
/*
* Translate a kernel virtual address to a physical address using the
* mapping information in kd->vm. Returns the result in pa, and returns
* the number of bytes that are contiguously available from this
* physical address. This routine is used only for crash dumps.
*/
int
_kvm_sun3x_kvatop(kvm_t *kd, vaddr_t va, paddr_t *pap)
{
cpu_kcore_hdr_t *h = kd->cpu_data;
struct sun3x_kcore_hdr *s = &h->un._sun3x;
struct vmstate *v = kd->vmst;
int idx, len, offset, pte;
u_long pteva, pa;
if (ISALIVE(kd)) {
_kvm_err(kd, 0, "vatop called in live kernel!");
return(0);
}
if (va < h->kernbase) {
_kvm_err(kd, 0, "not a kernel address");
return(0);
}
/*
* If this VA is in the contiguous range, short-cut.
* Note that this ends our recursion when we call
* kvm_read to access the kernel page table, which
* is guaranteed to be in the contiguous range.
*/
if (va < s->contig_end) {
len = s->contig_end - va;
pa = va - h->kernbase;
goto done;
}
/*
* The KVA is beyond the contiguous range, so we must
* read the PTE for this KVA from the page table.
*/
idx = ((va - h->kernbase) >> v->pgshift);
pteva = s->kernCbase + (idx * 4);
if (kvm_read(kd, pteva, &pte, 4) != 4) {
_kvm_err(kd, 0, "can not read PTE!");
return (0);
}
if ((pte & s->pg_valid) == 0) {
_kvm_err(kd, 0, "page not valid (VA=0x%lx)", va);
return (0);
}
offset = va & v->pgofset;
len = (h->page_size - offset);
pa = _kvm_pg_pa(pte, s) + offset;
done:
*pap = pa;
return (len);
}
/*
* Translate a physical address to a file-offset in the crash dump.
*/
off_t
_kvm_sun3x_pa2off(kvm_t *kd, paddr_t pa)
{
off_t off;
phys_ram_seg_t *rsp;
cpu_kcore_hdr_t *h = kd->cpu_data;
struct sun3x_kcore_hdr *s = &h->un._sun3x;
off = 0;
for (rsp = s->ram_segs; rsp->size; rsp++) {
if (pa >= rsp->start && pa < rsp->start + rsp->size) {
pa -= rsp->start;
break;
}
off += rsp->size;
}
return (kd->dump_off + off + pa);
}
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