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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2014 ARM Ltd.
*/
#ifndef __ASM_PTDUMP_H
#define __ASM_PTDUMP_H
#include <linux/ptdump.h>
#ifdef CONFIG_PTDUMP_CORE
#include <linux/mm_types.h>
#include <linux/seq_file.h>
struct addr_marker {
unsigned long start_address;
char *name;
};
struct ptdump_info {
struct mm_struct *mm;
const struct addr_marker *markers;
unsigned long base_addr;
};
struct ptdump_prot_bits {
u64 mask;
u64 val;
const char *set;
const char *clear;
};
struct ptdump_pg_level {
const struct ptdump_prot_bits *bits;
char name[4];
int num;
u64 mask;
};
/*
* The page dumper groups page table entries of the same type into a single
* description. It uses pg_state to track the range information while
* iterating over the pte entries. When the continuity is broken it then
* dumps out a description of the range.
*/
struct ptdump_pg_state {
struct ptdump_state ptdump;
struct ptdump_pg_level *pg_level;
struct seq_file *seq;
const struct addr_marker *marker;
const struct mm_struct *mm;
unsigned long start_address;
int level;
u64 current_prot;
bool check_wx;
unsigned long wx_pages;
unsigned long uxn_pages;
};
void ptdump_walk(struct seq_file *s, struct ptdump_info *info);
void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
u64 val);
#ifdef CONFIG_PTDUMP_DEBUGFS
#define EFI_RUNTIME_MAP_END DEFAULT_MAP_WINDOW_64
void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name);
#else
static inline void ptdump_debugfs_register(struct ptdump_info *info,
const char *name) { }
#endif /* CONFIG_PTDUMP_DEBUGFS */
#else
static inline void note_page(struct ptdump_state *pt_st, unsigned long addr,
int level, u64 val) { }
#endif /* CONFIG_PTDUMP_CORE */
#endif /* __ASM_PTDUMP_H */
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