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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_PAT_H
#define _ASM_X86_PAT_H
#include <linux/types.h>
#include <asm/pgtable_types.h>
bool pat_enabled(void);
void pat_disable(const char *reason);
extern void pat_init(void);
extern void init_cache_modes(void);
extern int reserve_memtype(u64 start, u64 end,
enum page_cache_mode req_pcm, enum page_cache_mode *ret_pcm);
extern int free_memtype(u64 start, u64 end);
extern int kernel_map_sync_memtype(u64 base, unsigned long size,
enum page_cache_mode pcm);
int io_reserve_memtype(resource_size_t start, resource_size_t end,
enum page_cache_mode *pcm);
void io_free_memtype(resource_size_t start, resource_size_t end);
bool pat_pfn_immune_to_uc_mtrr(unsigned long pfn);
#endif /* _ASM_X86_PAT_H */
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