projects / thirdparty / kernel / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| cdcc9708 PM |
2 | #ifndef __ASM_SH_MMU_CONTEXT_32_H |
| 3 | #define __ASM_SH_MMU_CONTEXT_32_H | |
| 4 | ||
| 5 | /* | |
| 6 | * Destroy context related info for an mm_struct that is about | |
| 7 | * to be put to rest. | |
| 8 | */ | |
| 9 | static inline void destroy_context(struct mm_struct *mm) | |
| 10 | { | |
| 11 | /* Do nothing */ | |
| 12 | } | |
| 13 | ||
| 8263a67e PM |
14 | #ifdef CONFIG_CPU_HAS_PTEAEX |
| 15 | static inline void set_asid(unsigned long asid) | |
| 16 | { | |
| 17 | __raw_writel(asid, MMU_PTEAEX); | |
| 18 | } | |
| 19 | ||
| 20 | static inline unsigned long get_asid(void) | |
| 21 | { | |
| 22 | return __raw_readl(MMU_PTEAEX) & MMU_CONTEXT_ASID_MASK; | |
| 23 | } | |
| 24 | #else | |
| cdcc9708 PM |
25 | static inline void set_asid(unsigned long asid) |
| 26 | { | |
| 27 | unsigned long __dummy; | |
| 28 | ||
| 29 | __asm__ __volatile__ ("mov.l %2, %0\n\t" | |
| 30 | "and %3, %0\n\t" | |
| 31 | "or %1, %0\n\t" | |
| 32 | "mov.l %0, %2" | |
| 33 | : "=&r" (__dummy) | |
| 34 | : "r" (asid), "m" (__m(MMU_PTEH)), | |
| 35 | "r" (0xffffff00)); | |
| 36 | } | |
| 37 | ||
| 38 | static inline unsigned long get_asid(void) | |
| 39 | { | |
| 40 | unsigned long asid; | |
| 41 | ||
| 42 | __asm__ __volatile__ ("mov.l %1, %0" | |
| 43 | : "=r" (asid) | |
| 44 | : "m" (__m(MMU_PTEH))); | |
| 45 | asid &= MMU_CONTEXT_ASID_MASK; | |
| 46 | return asid; | |
| 47 | } | |
| 8263a67e | 48 | #endif /* CONFIG_CPU_HAS_PTEAEX */ |
| cdcc9708 PM |
49 | |
| 50 | /* MMU_TTB is used for optimizing the fault handling. */ | |
| 51 | static inline void set_TTB(pgd_t *pgd) | |
| 52 | { | |
| 9d56dd3b | 53 | __raw_writel((unsigned long)pgd, MMU_TTB); |
| cdcc9708 PM |
54 | } |
| 55 | ||
| 56 | static inline pgd_t *get_TTB(void) | |
| 57 | { | |
| 9d56dd3b | 58 | return (pgd_t *)__raw_readl(MMU_TTB); |
| cdcc9708 PM |
59 | } |
| 60 | #endif /* __ASM_SH_MMU_CONTEXT_32_H */ |