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/*-
* Copyright (c) 1989, 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.
* 4. 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.
*
* from: FreeBSD: src/lib/libkvm/kvm_i386.c,v 1.15 2001/10/10 17:48:43
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
#endif
#endif /* LIBC_SCCS and not lint */
/*
* sparc64 machine dependent routines for kvm.
*/
#include <sys/param.h>
#include <kvm.h>
#include <limits.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include "../../sys/sparc64/include/kerneldump.h"
#include "kvm_private.h"
#include "kvm_sparc64.h"
struct vmstate {
off_t vm_tsb_off;
uint64_t vm_tsb_mask;
int vm_nregions;
struct sparc64_dump_reg *vm_regions;
};
static int
_sparc64_probe(kvm_t *kd)
{
return (_kvm_probe_elf_kernel(kd, ELFCLASS64, EM_SPARCV9));
}
static void
_sparc64_freevtop(kvm_t *kd)
{
free(kd->vmst->vm_regions);
free(kd->vmst);
kd->vmst = NULL;
}
static int
_sparc64_read_phys(kvm_t *kd, off_t pos, void *buf, size_t size)
{
/* XXX This has to be a raw file read, kvm_read is virtual. */
if (pread(kd->pmfd, buf, size, pos) != (ssize_t)size) {
_kvm_syserr(kd, kd->program, "_sparc64_read_phys: pread");
return (0);
}
return (1);
}
static int
_sparc64_reg_cmp(const void *a, const void *b)
{
const struct sparc64_dump_reg *ra, *rb;
ra = a;
rb = b;
if (ra->dr_pa < rb->dr_pa)
return (-1);
else if (ra->dr_pa >= rb->dr_pa + rb->dr_size)
return (1);
else
return (0);
}
#define KVM_OFF_NOTFOUND 0
static off_t
_sparc64_find_off(struct vmstate *vm, uint64_t pa, uint64_t size)
{
struct sparc64_dump_reg *reg, key;
vm_offset_t o;
key.dr_pa = pa;
reg = bsearch(&key, vm->vm_regions, vm->vm_nregions,
sizeof(*vm->vm_regions), _sparc64_reg_cmp);
if (reg == NULL)
return (KVM_OFF_NOTFOUND);
o = pa - reg->dr_pa;
if (o + size > reg->dr_size)
return (KVM_OFF_NOTFOUND);
return (reg->dr_offs + o);
}
static int
_sparc64_initvtop(kvm_t *kd)
{
struct sparc64_dump_hdr hdr;
struct sparc64_dump_reg *regs;
struct vmstate *vm;
size_t regsz;
int i;
vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
if (vm == NULL) {
_kvm_err(kd, kd->program, "cannot allocate vm");
return (-1);
}
kd->vmst = vm;
if (!_sparc64_read_phys(kd, 0, &hdr, sizeof(hdr)))
goto fail_vm;
hdr.dh_hdr_size = be64toh(hdr.dh_hdr_size);
hdr.dh_tsb_pa = be64toh(hdr.dh_tsb_pa);
hdr.dh_tsb_size = be64toh(hdr.dh_tsb_size);
hdr.dh_tsb_mask = be64toh(hdr.dh_tsb_mask);
hdr.dh_nregions = be32toh(hdr.dh_nregions);
regsz = hdr.dh_nregions * sizeof(*regs);
regs = _kvm_malloc(kd, regsz);
if (regs == NULL) {
_kvm_err(kd, kd->program, "cannot allocate regions");
goto fail_vm;
}
if (!_sparc64_read_phys(kd, sizeof(hdr), regs, regsz))
goto fail_regs;
for (i = 0; i < hdr.dh_nregions; i++) {
regs[i].dr_pa = be64toh(regs[i].dr_pa);
regs[i].dr_size = be64toh(regs[i].dr_size);
regs[i].dr_offs = be64toh(regs[i].dr_offs);
}
qsort(regs, hdr.dh_nregions, sizeof(*regs), _sparc64_reg_cmp);
vm->vm_tsb_mask = hdr.dh_tsb_mask;
vm->vm_regions = regs;
vm->vm_nregions = hdr.dh_nregions;
vm->vm_tsb_off = _sparc64_find_off(vm, hdr.dh_tsb_pa, hdr.dh_tsb_size);
if (vm->vm_tsb_off == KVM_OFF_NOTFOUND) {
_kvm_err(kd, kd->program, "tsb not found in dump");
goto fail_regs;
}
return (0);
fail_regs:
free(regs);
fail_vm:
free(vm);
return (-1);
}
static int
_sparc64_kvatop(kvm_t *kd, kvaddr_t va, off_t *pa)
{
struct sparc64_tte tte;
off_t tte_off;
kvaddr_t vpn;
off_t pa_off;
kvaddr_t pg_off;
int rest;
pg_off = va & SPARC64_PAGE_MASK;
if (va >= SPARC64_MIN_DIRECT_ADDRESS)
pa_off = SPARC64_DIRECT_TO_PHYS(va) & ~SPARC64_PAGE_MASK;
else {
vpn = va >> SPARC64_PAGE_SHIFT;
tte_off = kd->vmst->vm_tsb_off +
((vpn & kd->vmst->vm_tsb_mask) << SPARC64_TTE_SHIFT);
if (!_sparc64_read_phys(kd, tte_off, &tte, sizeof(tte)))
goto invalid;
tte.tte_vpn = be64toh(tte.tte_vpn);
tte.tte_data = be64toh(tte.tte_data);
if (!sparc64_tte_match(&tte, va))
goto invalid;
pa_off = SPARC64_TTE_GET_PA(&tte);
}
rest = SPARC64_PAGE_SIZE - pg_off;
pa_off = _sparc64_find_off(kd->vmst, pa_off, rest);
if (pa_off == KVM_OFF_NOTFOUND)
goto invalid;
*pa = pa_off + pg_off;
return (rest);
invalid:
_kvm_err(kd, 0, "invalid address (%jx)", (uintmax_t)va);
return (0);
}
static int
_sparc64_native(kvm_t *kd)
{
#ifdef __sparc64__
return (1);
#else
return (0);
#endif
}
struct kvm_arch kvm_sparc64 = {
.ka_probe = _sparc64_probe,
.ka_initvtop = _sparc64_initvtop,
.ka_freevtop = _sparc64_freevtop,
.ka_kvatop = _sparc64_kvatop,
.ka_native = _sparc64_native,
};
KVM_ARCH(kvm_sparc64);
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