lib/libkvm/kvm_powerpc64.c

   1 /*      $NetBSD: kvm_powerpc64.c,v 1.6 2014/08/23 02:25:23 matt Exp $   */
   2
   3 /*
   4  * Copyright (c) 2005 Wasabi Systems, Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Allen Briggs for Wasabi Systems, Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed for the NetBSD Project by
  20  *      Wasabi Systems, Inc.
  21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
  22  *    or promote products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
  29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  */
  37 /*-
  38  * Copyright (C) 1996 Wolfgang Solfrank.
  39  * Copyright (C) 1996 TooLs GmbH.
  40  * All rights reserved.
  41  *
  42  * Redistribution and use in source and binary forms, with or without
  43  * modification, are permitted provided that the following conditions
  44  * are met:
  45  * 1. Redistributions of source code must retain the above copyright
  46  *    notice, this list of conditions and the following disclaimer.
  47  * 2. Redistributions in binary form must reproduce the above copyright
  48  *    notice, this list of conditions and the following disclaimer in the
  49  *    documentation and/or other materials provided with the distribution.
  50  * 3. All advertising materials mentioning features or use of this software
  51  *    must display the following acknowledgement:
  52  *      This product includes software developed by TooLs GmbH.
  53  * 4. The name of TooLs GmbH may not be used to endorse or promote products
  54  *    derived from this software without specific prior written permission.
  55  *
  56  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
  57  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  58  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  59  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  60  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  61  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  62  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  63  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  64  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  65  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  66  */
  67
  68 /*
  69  * PowerPC machine dependent routines for kvm.
  70  */
  71
  72 #include <sys/param.h>
  73 #include <sys/exec.h>
  74 #include <sys/types.h>
  75
  76 #include <uvm/uvm_extern.h>
  77
  78 #include <db.h>
  79 #include <limits.h>
  80 #include <kvm.h>
  81 #include <stdlib.h>
  82 #include <unistd.h>
  83
  84 #include "kvm_private.h"
  85
  86 #include <sys/kcore.h>
  87 #include <machine/kcore.h>
  88
  89 #include <powerpc/spr.h>
  90 #include <powerpc/oea/bat.h>
  91 #include <powerpc/oea/pte.h>
  92
  93 __RCSID("$NetBSD: kvm_powerpc64.c,v 1.6 2014/08/23 02:25:23 matt Exp $");
  94
  95 void
  96 _kvm_freevtop(kvm_t *kd)
  97 {
  98         if (kd->vmst != 0)
  99                 free(kd->vmst);
 100 }
 101
 102 /*ARGSUSED*/
 103 int
 104 _kvm_initvtop(kvm_t *kd)
 105 {
 106
 107         return 0;
 108 }
 109
 110 #define SR_VSID_HASH_MASK       0x0007ffff
 111
 112 #define HASH_MASK       0x0007ffff
 113
 114 /*
 115  * Translate a KVA to a PA
 116  */
 117 int
 118 _kvm_kvatop(kvm_t *kd, vaddr_t va, paddr_t *pa)
 119 {
 120
 121         if (ISALIVE(kd)) {
 122                 _kvm_err(kd, 0, "vatop called in live kernel!");
 123                 return 0;
 124         }
 125
 126 #if 0
 127         cpu_kcore_hdr_t *cpu_kh = kd->cpu_data;
 128         uint32_t pvr = (cpu_kh->pvr >> 16);
 129 #endif
 130
 131
 132         /* No hit -- no translation */
 133         *pa = (u_long)~0UL;
 134         return 0;
 135 }
 136
 137 off_t
 138 _kvm_pa2off(kvm_t *kd, paddr_t pa)
 139 {
 140         cpu_kcore_hdr_t *cpu_kh;
 141         phys_ram_seg_t  *ram;
 142         off_t           off;
 143         void            *e;
 144
 145         cpu_kh = kd->cpu_data;
 146         e = (char *) kd->cpu_data + kd->cpu_dsize;
 147         ram = (void *)((char *)(void *)cpu_kh + ALIGN(sizeof *cpu_kh));
 148         off = kd->dump_off;
 149         do {
 150                 if (pa >= ram->start && (pa - ram->start) < ram->size) {
 151                         return off + (pa - ram->start);
 152                 }
 153                 ram++;
 154                 off += ram->size;
 155         } while ((void *) ram < e && ram->size);
 156
 157         _kvm_err(kd, 0, "pa2off failed for pa 0x%08lx\n", pa);
 158         return (off_t) -1;
 159 }
 160
 161 /*
 162  * Machine-dependent initialization for ALL open kvm descriptors,
 163  * not just those for a kernel crash dump.  Some architectures
 164  * have to deal with these NOT being constants!  (i.e. m68k)
 165  */
 166 int
 167 _kvm_mdopen(kvm_t *kd)
 168 {
 169         uintptr_t max_uva;
 170         extern struct ps_strings *__ps_strings;
 171
 172 #if 0   /* XXX - These vary across powerpc machines... */
 173         kd->usrstack = USRSTACK;
 174         kd->min_uva = VM_MIN_ADDRESS;
 175         kd->max_uva = VM_MAXUSER_ADDRESS;
 176 #endif
 177         /* This is somewhat hack-ish, but it works. */
 178         max_uva = (uintptr_t) (__ps_strings + 1);
 179         kd->usrstack = max_uva;
 180         kd->max_uva  = max_uva;
 181         kd->min_uva  = 0;
 182
 183         return (0);
 184 }