| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _ASM_X86_PAT_H |
| 3 | #define _ASM_X86_PAT_H |
| 4 | |
| 5 | #include <linux/types.h> |
| 6 | #include <asm/pgtable_types.h> |
| 7 | |
| 8 | bool pat_enabled(void); |
| 9 | void pat_disable(const char *reason); |
| 10 | extern void pat_init(void); |
| 11 | extern void init_cache_modes(void); |
| 12 | |
| 13 | extern int reserve_memtype(u64 start, u64 end, |
| 14 | enum page_cache_mode req_pcm, enum page_cache_mode *ret_pcm); |
| 15 | extern int free_memtype(u64 start, u64 end); |
| 16 | |
| 17 | extern int kernel_map_sync_memtype(u64 base, unsigned long size, |
| 18 | enum page_cache_mode pcm); |
| 19 | |
| 20 | int io_reserve_memtype(resource_size_t start, resource_size_t end, |
| 21 | enum page_cache_mode *pcm); |
| 22 | |
| 23 | void io_free_memtype(resource_size_t start, resource_size_t end); |
| 24 | |
| 25 | bool pat_pfn_immune_to_uc_mtrr(unsigned long pfn); |
| 26 | |
| 27 | #endif /* _ASM_X86_PAT_H */ |