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 <linux/pgtable.h>
   9
  10 #include "ptdump.h"
  11
  12 static const struct flag_info flag_array[] = {
  13         {
  14 #ifdef CONFIG_PPC_16K_PAGES
  15                 .mask   = _PAGE_HUGE,
  16                 .val    = _PAGE_HUGE,
  17 #else
  18                 .mask   = _PAGE_SPS,
  19                 .val    = _PAGE_SPS,
  20 #endif
  21                 .set    = "huge",
  22                 .clear  = "    ",
  23         }, {
  24                 .mask   = _PAGE_RO | _PAGE_NA,
  25                 .val    = 0,
  26                 .set    = "rw",
  27         }, {
  28                 .mask   = _PAGE_RO | _PAGE_NA,
  29                 .val    = _PAGE_RO,
  30                 .set    = "r ",
  31         }, {
  32                 .mask   = _PAGE_RO | _PAGE_NA,
  33                 .val    = _PAGE_NA,
  34                 .set    = "  ",
  35         }, {
  36                 .mask   = _PAGE_EXEC,
  37                 .val    = _PAGE_EXEC,
  38                 .set    = " X ",
  39                 .clear  = "   ",
  40         }, {
  41                 .mask   = _PAGE_PRESENT,
  42                 .val    = _PAGE_PRESENT,
  43                 .set    = "present",
  44                 .clear  = "       ",
  45         }, {
  46                 .mask   = _PAGE_GUARDED,
  47                 .val    = _PAGE_GUARDED,
  48                 .set    = "guarded",
  49                 .clear  = "       ",
  50         }, {
  51                 .mask   = _PAGE_DIRTY,
  52                 .val    = _PAGE_DIRTY,
  53                 .set    = "dirty",
  54                 .clear  = "     ",
  55         }, {
  56                 .mask   = _PAGE_ACCESSED,
  57                 .val    = _PAGE_ACCESSED,
  58                 .set    = "accessed",
  59                 .clear  = "        ",
  60         }, {
  61                 .mask   = _PAGE_NO_CACHE,
  62                 .val    = _PAGE_NO_CACHE,
  63                 .set    = "no cache",
  64                 .clear  = "        ",
  65         }, {
  66                 .mask   = _PAGE_SPECIAL,
  67                 .val    = _PAGE_SPECIAL,
  68                 .set    = "special",
  69         }
  70 };
  71
  72 struct pgtable_level pg_level[5] = {
  73         { /* pgd */
  74                 .flag   = flag_array,
  75                 .num    = ARRAY_SIZE(flag_array),
  76         }, { /* p4d */
  77                 .flag   = flag_array,
  78                 .num    = ARRAY_SIZE(flag_array),
  79         }, { /* pud */
  80                 .flag   = flag_array,
  81                 .num    = ARRAY_SIZE(flag_array),
  82         }, { /* pmd */
  83                 .flag   = flag_array,
  84                 .num    = ARRAY_SIZE(flag_array),
  85         }, { /* pte */
  86                 .flag   = flag_array,
  87                 .num    = ARRAY_SIZE(flag_array),
  88         },
  89 };