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 #ifdef CONFIG_CPU_HAS_PTEAEX 14 static inline void set_asid(unsigned long asid) 15 { 16 __raw_writel(asid, MMU_PTEAEX); 17 } 18 19 static inline unsigned long get_asid(void) 20 { 21 return __raw_readl(MMU_PTEAEX) & MMU_CONTEXT_ASID_MASK; 22 } 23 #else 24 static inline void set_asid(unsigned long asid) 25 { 26 unsigned long __dummy; 27 28 __asm__ __volatile__ ("mov.l %2, %0\n\t" 29 "and %3, %0\n\t" 30 "or %1, %0\n\t" 31 "mov.l %0, %2" 32 : "=&r" (__dummy) 33 : "r" (asid), "m" (__m(MMU_PTEH)), 34 "r" (0xffffff00)); 35 } 36 37 static inline unsigned long get_asid(void) 38 { 39 unsigned long asid; 40 41 __asm__ __volatile__ ("mov.l %1, %0" 42 : "=r" (asid) 43 : "m" (__m(MMU_PTEH))); 44 asid &= MMU_CONTEXT_ASID_MASK; 45 return asid; 46 } 47 #endif /* CONFIG_CPU_HAS_PTEAEX */ 48 49 /* MMU_TTB is used for optimizing the fault handling. */ 50 static inline void set_TTB(pgd_t *pgd) 51 { 52 __raw_writel((unsigned long)pgd, MMU_TTB); 53 } 54 55 static inline pgd_t *get_TTB(void) 56 { 57 return (pgd_t *)__raw_readl(MMU_TTB); 58 } 59 #endif /* __ASM_SH_MMU_CONTEXT_32_H */ 60