/*- * 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 __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 #include #include #include #include #include #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; uint64_t pa; 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); pa = hdr.dh_tsb_pa; 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);