/* $NetBSD: kvm_m68k_cmn.c,v 1.18 2014/03/04 06:38:08 matt Exp $ */ /*- * 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. * 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. */ /*- * Copyright (c) 1997 Jason R. Thorpe. 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 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. */ #include <sys/cdefs.h> #if defined(LIBC_SCCS) && !defined(lint) #if 0 static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93"; #else __RCSID("$NetBSD: kvm_m68k_cmn.c,v 1.18 2014/03/04 06:38:08 matt Exp $"); #endif #endif /* LIBC_SCCS and not lint */ /* * Common m68k 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/cpu.h> #include <m68k/kcore.h> #include <m68k/m68k.h> #include "kvm_private.h" #include "kvm_m68k.h" int _kvm_cmn_initvtop(kvm_t *); void _kvm_cmn_freevtop(kvm_t *); int _kvm_cmn_kvatop(kvm_t *, vaddr_t, paddr_t *); off_t _kvm_cmn_pa2off(kvm_t *, paddr_t); struct kvm_ops _kvm_ops_cmn = { _kvm_cmn_initvtop, _kvm_cmn_freevtop, _kvm_cmn_kvatop, _kvm_cmn_pa2off }; static int vatop_030(kvm_t *, uint32_t, vaddr_t, paddr_t *); static int vatop_040(kvm_t *, uint32_t, vaddr_t, paddr_t *); #define _kvm_btop(v, a) (((unsigned)(a)) >> (v)->pgshift) void _kvm_cmn_freevtop(kvm_t *kd) { /* No private state information to keep. */ } int _kvm_cmn_initvtop(kvm_t *kd) { /* No private state information to keep. */ return (0); } int _kvm_cmn_kvatop(kvm_t *kd, vaddr_t va, paddr_t *pa) { cpu_kcore_hdr_t *h = kd->cpu_data; struct m68k_kcore_hdr *m = &h->un._m68k; int (*vtopf)(kvm_t *, uint32_t, vaddr_t, paddr_t *); if (ISALIVE(kd)) { _kvm_err(kd, 0, "vatop called in live kernel!"); return (0); } /* * 68040 and 68060 use same translation functions, * as do 68030, 68851, HP MMU. */ if (m->mmutype == MMU_68040 || m->mmutype == MMU_68060) vtopf = vatop_040; else vtopf = vatop_030; return ((*vtopf)(kd, m->sysseg_pa, va, pa)); } /* * Translate a physical address to a file-offset in the crash dump. */ off_t _kvm_cmn_pa2off(kvm_t *kd, u_long pa) { cpu_kcore_hdr_t *h = kd->cpu_data; struct m68k_kcore_hdr *m = &h->un._m68k; phys_ram_seg_t *rsp; off_t off; int i; off = 0; rsp = m->ram_segs; for (i = 0; i < M68K_NPHYS_RAM_SEGS && rsp[i].size != 0; i++) { if (pa >= rsp[i].start && pa < (rsp[i].start + rsp[i].size)) { pa -= rsp[i].start; break; } off += rsp[i].size; } return (kd->dump_off + off + pa); } /***************************************************************** * Local stuff... */ static int vatop_030(kvm_t *kd, uint32_t stpa, vaddr_t va, paddr_t *pa) { cpu_kcore_hdr_t *h = kd->cpu_data; struct m68k_kcore_hdr *m = &h->un._m68k; struct vmstate *vm = kd->vmst; paddr_t addr; uint32_t ste, pte; u_int p, offset; offset = va & vm->pgofset; /* * We may be called before address translation is initialized. * This is typically used to find the dump magic number. This * means we do not yet have the kernel page tables available, * so we must to a simple relocation. */ if (va < m->relocend) { *pa = (va - h->kernbase) + m->reloc; return (h->page_size - offset); } addr = stpa + ((va >> m->sg_ishift) * sizeof(u_int32_t)); /* * Can't use KREAD to read kernel segment table entries. * Fortunately it is 1-to-1 mapped so we don't have to. */ if (stpa == m->sysseg_pa) { if (_kvm_pread(kd, kd->pmfd, &ste, sizeof(ste), _kvm_cmn_pa2off(kd, addr)) != sizeof(ste)) goto invalid; } else if (KREAD(kd, addr, &ste)) goto invalid; if ((ste & m->sg_v) == 0) { _kvm_err(kd, 0, "invalid segment (%x)", ste); return(0); } p = _kvm_btop(vm, va & m->sg_pmask); addr = (ste & m->sg_frame) + (p * sizeof(u_int32_t)); /* * Address from STE is a physical address so don't use kvm_read. */ if (_kvm_pread(kd, kd->pmfd, &pte, sizeof(pte), _kvm_cmn_pa2off(kd, addr)) != sizeof(pte)) goto invalid; addr = pte & m->pg_frame; if ((pte & m->pg_v) == 0) { _kvm_err(kd, 0, "page not valid"); return (0); } *pa = addr + offset; return (h->page_size - offset); invalid: _kvm_err(kd, 0, "invalid address (%lx)", va); return (0); } static int vatop_040(kvm_t *kd, uint32_t stpa, vaddr_t va, paddr_t *pa) { cpu_kcore_hdr_t *h = kd->cpu_data; struct m68k_kcore_hdr *m = &h->un._m68k; struct vmstate *vm = kd->vmst; paddr_t addr; uint32_t stpa2; uint32_t ste, pte; u_int offset; offset = va & vm->pgofset; /* * We may be called before address translation is initialized. * This is typically used to find the dump magic number. This * means we do not yet have the kernel page tables available, * so we must to a simple relocation. */ if (va < m->relocend) { *pa = (va - h->kernbase) + m->reloc; return (h->page_size - offset); } addr = stpa + ((va >> m->sg40_shift1) * sizeof(u_int32_t)); /* * Can't use KREAD to read kernel segment table entries. * Fortunately it is 1-to-1 mapped so we don't have to. */ if (stpa == m->sysseg_pa) { if (_kvm_pread(kd, kd->pmfd, &ste, sizeof(ste), _kvm_cmn_pa2off(kd, addr)) != sizeof(ste)) goto invalid; } else if (KREAD(kd, addr, &ste)) goto invalid; if ((ste & m->sg_v) == 0) { _kvm_err(kd, 0, "invalid level 1 descriptor (%x)", ste); return((off_t)0); } stpa2 = (ste & m->sg40_addr1); addr = stpa2 + (((va & m->sg40_mask2) >> m->sg40_shift2) * sizeof(u_int32_t)); /* * Address from level 1 STE is a physical address, * so don't use kvm_read. */ if (_kvm_pread(kd, kd->pmfd, &ste, sizeof(ste), _kvm_cmn_pa2off(kd, addr)) != sizeof(ste)) goto invalid; if ((ste & m->sg_v) == 0) { _kvm_err(kd, 0, "invalid level 2 descriptor (%x)", ste); return((off_t)0); } stpa2 = (ste & m->sg40_addr2); addr = stpa2 + (((va & m->sg40_mask3) >> m->sg40_shift3) * sizeof(u_int32_t)); /* * Address from STE is a physical address so don't use kvm_read. */ if (_kvm_pread(kd, kd->pmfd, &pte, sizeof(pte), _kvm_cmn_pa2off(kd, addr)) != sizeof(pte)) goto invalid; addr = pte & m->pg_frame; if ((pte & m->pg_v) == 0) { _kvm_err(kd, 0, "page not valid"); return (0); } *pa = addr + offset; return (h->page_size - offset); invalid: _kvm_err(kd, 0, "invalid address (%lx)", va); return (0); }
