| Paul Mundt | cdcc970 | 2007-11-09 16:37:18 +0900 | [diff] [blame] | 1 | #ifndef __ASM_SH_MMU_CONTEXT_32_H |
| 2 | #define __ASM_SH_MMU_CONTEXT_32_H |
| 3 | |
| 4 | /* |
| 5 | * Destroy context related info for an mm_struct that is about |
| 6 | * to be put to rest. |
| 7 | */ |
| 8 | static inline void destroy_context(struct mm_struct *mm) |
| 9 | { |
| 10 | /* Do nothing */ |
| 11 | } |
| 12 | |
| 13 | static inline void set_asid(unsigned long asid) |
| 14 | { |
| 15 | unsigned long __dummy; |
| 16 | |
| 17 | __asm__ __volatile__ ("mov.l %2, %0\n\t" |
| 18 | "and %3, %0\n\t" |
| 19 | "or %1, %0\n\t" |
| 20 | "mov.l %0, %2" |
| 21 | : "=&r" (__dummy) |
| 22 | : "r" (asid), "m" (__m(MMU_PTEH)), |
| 23 | "r" (0xffffff00)); |
| 24 | } |
| 25 | |
| 26 | static inline unsigned long get_asid(void) |
| 27 | { |
| 28 | unsigned long asid; |
| 29 | |
| 30 | __asm__ __volatile__ ("mov.l %1, %0" |
| 31 | : "=r" (asid) |
| 32 | : "m" (__m(MMU_PTEH))); |
| 33 | asid &= MMU_CONTEXT_ASID_MASK; |
| 34 | return asid; |
| 35 | } |
| 36 | |
| 37 | /* MMU_TTB is used for optimizing the fault handling. */ |
| 38 | static inline void set_TTB(pgd_t *pgd) |
| 39 | { |
| 40 | ctrl_outl((unsigned long)pgd, MMU_TTB); |
| 41 | } |
| 42 | |
| 43 | static inline pgd_t *get_TTB(void) |
| 44 | { |
| 45 | return (pgd_t *)ctrl_inl(MMU_TTB); |
| 46 | } |
| 47 | #endif /* __ASM_SH_MMU_CONTEXT_32_H */ |