root/arch/powerpc/mm/ptdump/8xx.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * From split of dump_linuxpagetables.c
   4  * Copyright 2016, Rashmica Gupta, IBM Corp.
   5  *
   6  */
   7 #include <linux/kernel.h>
   8 #include <asm/pgtable.h>
   9 
  10 #include "ptdump.h"
  11 
  12 static const struct flag_info flag_array[] = {
  13         {
  14                 .mask   = _PAGE_SH,
  15                 .val    = 0,
  16                 .set    = "user",
  17                 .clear  = "    ",
  18         }, {
  19                 .mask   = _PAGE_RO | _PAGE_NA,
  20                 .val    = 0,
  21                 .set    = "rw",
  22         }, {
  23                 .mask   = _PAGE_RO | _PAGE_NA,
  24                 .val    = _PAGE_RO,
  25                 .set    = "r ",
  26         }, {
  27                 .mask   = _PAGE_RO | _PAGE_NA,
  28                 .val    = _PAGE_NA,
  29                 .set    = "  ",
  30         }, {
  31                 .mask   = _PAGE_EXEC,
  32                 .val    = _PAGE_EXEC,
  33                 .set    = " X ",
  34                 .clear  = "   ",
  35         }, {
  36                 .mask   = _PAGE_PRESENT,
  37                 .val    = _PAGE_PRESENT,
  38                 .set    = "present",
  39                 .clear  = "       ",
  40         }, {
  41                 .mask   = _PAGE_GUARDED,
  42                 .val    = _PAGE_GUARDED,
  43                 .set    = "guarded",
  44                 .clear  = "       ",
  45         }, {
  46                 .mask   = _PAGE_DIRTY,
  47                 .val    = _PAGE_DIRTY,
  48                 .set    = "dirty",
  49                 .clear  = "     ",
  50         }, {
  51                 .mask   = _PAGE_ACCESSED,
  52                 .val    = _PAGE_ACCESSED,
  53                 .set    = "accessed",
  54                 .clear  = "        ",
  55         }, {
  56                 .mask   = _PAGE_NO_CACHE,
  57                 .val    = _PAGE_NO_CACHE,
  58                 .set    = "no cache",
  59                 .clear  = "        ",
  60         }, {
  61                 .mask   = _PAGE_SPECIAL,
  62                 .val    = _PAGE_SPECIAL,
  63                 .set    = "special",
  64         }
  65 };
  66 
  67 struct pgtable_level pg_level[5] = {
  68         {
  69         }, { /* pgd */
  70                 .flag   = flag_array,
  71                 .num    = ARRAY_SIZE(flag_array),
  72         }, { /* pud */
  73                 .flag   = flag_array,
  74                 .num    = ARRAY_SIZE(flag_array),
  75         }, { /* pmd */
  76                 .flag   = flag_array,
  77                 .num    = ARRAY_SIZE(flag_array),
  78         }, { /* pte */
  79                 .flag   = flag_array,
  80                 .num    = ARRAY_SIZE(flag_array),
  81         },
  82 };