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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2014 ARM Ltd.
4 */
5#ifndef __ASM_PTDUMP_H
6#define __ASM_PTDUMP_H
7
8#include <linux/ptdump.h>
9
10#ifdef CONFIG_PTDUMP_CORE
11
12#include <linux/mm_types.h>
13#include <linux/seq_file.h>
14
15struct addr_marker {
16 unsigned long start_address;
17 char *name;
18};
19
20struct ptdump_info {
21 struct mm_struct *mm;
22 const struct addr_marker *markers;
23 unsigned long base_addr;
24};
25
26struct ptdump_prot_bits {
27 u64 mask;
28 u64 val;
29 const char *set;
30 const char *clear;
31};
32
33struct ptdump_pg_level {
34 const struct ptdump_prot_bits *bits;
35 char name[4];
36 int num;
37 u64 mask;
38};
39
40/*
41 * The page dumper groups page table entries of the same type into a single
42 * description. It uses pg_state to track the range information while
43 * iterating over the pte entries. When the continuity is broken it then
44 * dumps out a description of the range.
45 */
46struct ptdump_pg_state {
47 struct ptdump_state ptdump;
48 struct ptdump_pg_level *pg_level;
49 struct seq_file *seq;
50 const struct addr_marker *marker;
51 const struct mm_struct *mm;
52 unsigned long start_address;
53 int level;
54 u64 current_prot;
55 bool check_wx;
56 unsigned long wx_pages;
57 unsigned long uxn_pages;
58};
59
60void ptdump_walk(struct seq_file *s, struct ptdump_info *info);
61void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
62 u64 val);
63#ifdef CONFIG_PTDUMP_DEBUGFS
64#define EFI_RUNTIME_MAP_END DEFAULT_MAP_WINDOW_64
65void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name);
66#else
67static inline void ptdump_debugfs_register(struct ptdump_info *info,
68 const char *name) { }
69#endif /* CONFIG_PTDUMP_DEBUGFS */
70#else
71static inline void note_page(struct ptdump_state *pt_st, unsigned long addr,
72 int level, u64 val) { }
73#endif /* CONFIG_PTDUMP_CORE */
74
75#endif /* __ASM_PTDUMP_H */