1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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2 | #ifndef _ASM_X86_MEMTYPE_H |
3 | #define _ASM_X86_MEMTYPE_H |
4 | |
5 | #include <linux/types.h> |
6 | #include <asm/pgtable_types.h> |
7 | |
8 | extern bool pat_enabled(void); |
9 | extern void pat_bp_init(void); |
10 | extern void pat_cpu_init(void); |
11 | |
12 | extern int memtype_reserve(u64 start, u64 end, |
13 | enum page_cache_mode req_pcm, enum page_cache_mode *ret_pcm); |
14 | extern int memtype_free(u64 start, u64 end); |
15 | |
16 | extern int memtype_kernel_map_sync(u64 base, unsigned long size, |
17 | enum page_cache_mode pcm); |
18 | |
19 | extern int memtype_reserve_io(resource_size_t start, resource_size_t end, |
20 | enum page_cache_mode *pcm); |
21 | |
22 | extern void memtype_free_io(resource_size_t start, resource_size_t end); |
23 | |
24 | extern bool pat_pfn_immune_to_uc_mtrr(unsigned long pfn); |
25 | |
26 | bool x86_has_pat_wp(void); |
27 | enum page_cache_mode pgprot2cachemode(pgprot_t pgprot); |
28 | |
29 | #endif /* _ASM_X86_MEMTYPE_H */ |
30 |