/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software developed by the Computer Systems
* Engineering group at Lawrence Berkeley Laboratory under DARPA contract
* BG 91-66 and contributed to Berkeley.
*
* 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. 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.
*/
int _kvm_kvatop44c(kvm_t *, vaddr_t, paddr_t *);
int _kvm_kvatop4m (kvm_t *, vaddr_t, paddr_t *);
int _kvm_kvatop4u (kvm_t *, vaddr_t, paddr_t *);
/*
* XXX
* taken from /sys/arch/sparc64/include/kcore.h.
* this is the same as the sparc one, except for the kphys addition,
* so luckily we can use this here...
*/
typedef struct sparc64_cpu_kcore_hdr {
int cputype; /* CPU type associated with this dump */
u_long kernbase; /* copy of KERNBASE goes here */
int nmemseg; /* # of physical memory segments */
u_long memsegoffset; /* start of memseg array (relative */
/* to the start of this header) */
int nsegmap; /* # of segmaps following */
u_long segmapoffset; /* start of segmap array (relative */
/* to the start of this header) */
int npmeg; /* # of PMEGs; [sun4/sun4c] only */
u_long pmegoffset; /* start of pmeg array (relative */
/* to the start of this header) */
/* SPARC64 stuff */
paddr_t kphys; /* Physical address of 4MB locked TLB */
} sparc64_cpu_kcore_hdr_t;
/*
* Prepare for translation of kernel virtual addresses into offsets
* into crash dump files. We use the MMU specific goop written at the
* front of the crash dump by pmap_dumpmmu().
*/
int
_kvm_initvtop(kvm_t *kd)
{
sparc64_cpu_kcore_hdr_t *cpup = kd->cpu_data;
switch (cputyp = cpup->cputype) {
case CPU_SUN4:
case CPU_SUN4U:
kd->nbpg = 8196;
pgshift = 13;
break;
case CPU_SUN4C:
case CPU_SUN4M:
kd->nbpg = 4096;
pgshift = 12;
break;
default:
_kvm_err(kd, kd->program, "Unsupported CPU type");
return (-1);
}
nptesg = NBPSG / kd->nbpg;
return (0);
}
/*
* 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_kvatop(kvm_t *kd, vaddr_t va, paddr_t *pa)
{
if (cputyp == -1)
if (_kvm_initvtop(kd) != 0)
return (-1);
switch (cputyp) {
case CPU_SUN4:
case CPU_SUN4C:
return _kvm_kvatop44c(kd, va, pa);
break;
case CPU_SUN4M:
return _kvm_kvatop4m(kd, va, pa);
break;
case CPU_SUN4U:
default:
return _kvm_kvatop4u(kd, va, pa);
}
}
/*
* (note: sun4 3-level MMU not yet supported)
*/
int
_kvm_kvatop44c(kvm_t *kd, vaddr_t va, paddr_t *pa)
{
int vr, vs, pte;
sparc64_cpu_kcore_hdr_t *cpup = kd->cpu_data;
struct segmap *sp, *segmaps;
int *ptes;
int nkreg, nureg;
u_long kernbase = cpup->kernbase;
/*
* Translate a physical address to a file-offset in the crash dump.
*/
off_t
_kvm_pa2off(kvm_t *kd, paddr_t pa)
{
sparc64_cpu_kcore_hdr_t *cpup = kd->cpu_data;
phys_ram_seg_t *mp;
off_t off;
int nmem;
/*
* Layout of CPU segment:
* cpu_kcore_hdr_t;
* [alignment]
* phys_ram_seg_t[cpup->nmemseg];
*/
mp = (phys_ram_seg_t *)((int)kd->cpu_data + cpup->memsegoffset);
off = 0;
/* Translate (sparse) pfnum to (packed) dump offset */
for (nmem = cpup->nmemseg; --nmem >= 0; mp++) {
if (mp->start <= pa && pa < mp->start + mp->size)
break;
off += mp->size;
}
if (nmem < 0) {
_kvm_err(kd, 0, "invalid address (%#"PRIxPADDR")", pa);
return (-1);
}
return (kd->dump_off + off + pa - mp->start);
}
/*
* Machine-dependent initialization for ALL open kvm descriptors,
* not just those for a kernel crash dump. Some architectures
* have to deal with these NOT being constants! (i.e. m68k)
*/
int
_kvm_mdopen(kvm_t *kd)
{
u_long max_uva;
extern struct ps_strings *__ps_strings;
