1f15cbe6fSPaul Mundt #ifndef __ASM_SH_MMU_CONTEXT_32_H 2f15cbe6fSPaul Mundt #define __ASM_SH_MMU_CONTEXT_32_H 3f15cbe6fSPaul Mundt 4f15cbe6fSPaul Mundt /* 5f15cbe6fSPaul Mundt * Destroy context related info for an mm_struct that is about 6f15cbe6fSPaul Mundt * to be put to rest. 7f15cbe6fSPaul Mundt */ 8f15cbe6fSPaul Mundt static inline void destroy_context(struct mm_struct *mm) 9f15cbe6fSPaul Mundt { 10f15cbe6fSPaul Mundt /* Do nothing */ 11f15cbe6fSPaul Mundt } 12f15cbe6fSPaul Mundt 138263a67eSPaul Mundt #ifdef CONFIG_CPU_HAS_PTEAEX 148263a67eSPaul Mundt static inline void set_asid(unsigned long asid) 158263a67eSPaul Mundt { 168263a67eSPaul Mundt __raw_writel(asid, MMU_PTEAEX); 178263a67eSPaul Mundt } 188263a67eSPaul Mundt 198263a67eSPaul Mundt static inline unsigned long get_asid(void) 208263a67eSPaul Mundt { 218263a67eSPaul Mundt return __raw_readl(MMU_PTEAEX) & MMU_CONTEXT_ASID_MASK; 228263a67eSPaul Mundt } 238263a67eSPaul Mundt #else 24f15cbe6fSPaul Mundt static inline void set_asid(unsigned long asid) 25f15cbe6fSPaul Mundt { 26f15cbe6fSPaul Mundt unsigned long __dummy; 27f15cbe6fSPaul Mundt 28f15cbe6fSPaul Mundt __asm__ __volatile__ ("mov.l %2, %0\n\t" 29f15cbe6fSPaul Mundt "and %3, %0\n\t" 30f15cbe6fSPaul Mundt "or %1, %0\n\t" 31f15cbe6fSPaul Mundt "mov.l %0, %2" 32f15cbe6fSPaul Mundt : "=&r" (__dummy) 33f15cbe6fSPaul Mundt : "r" (asid), "m" (__m(MMU_PTEH)), 34f15cbe6fSPaul Mundt "r" (0xffffff00)); 35f15cbe6fSPaul Mundt } 36f15cbe6fSPaul Mundt 37f15cbe6fSPaul Mundt static inline unsigned long get_asid(void) 38f15cbe6fSPaul Mundt { 39f15cbe6fSPaul Mundt unsigned long asid; 40f15cbe6fSPaul Mundt 41f15cbe6fSPaul Mundt __asm__ __volatile__ ("mov.l %1, %0" 42f15cbe6fSPaul Mundt : "=r" (asid) 43f15cbe6fSPaul Mundt : "m" (__m(MMU_PTEH))); 44f15cbe6fSPaul Mundt asid &= MMU_CONTEXT_ASID_MASK; 45f15cbe6fSPaul Mundt return asid; 46f15cbe6fSPaul Mundt } 478263a67eSPaul Mundt #endif /* CONFIG_CPU_HAS_PTEAEX */ 48f15cbe6fSPaul Mundt 49f15cbe6fSPaul Mundt /* MMU_TTB is used for optimizing the fault handling. */ 50f15cbe6fSPaul Mundt static inline void set_TTB(pgd_t *pgd) 51f15cbe6fSPaul Mundt { 52f15cbe6fSPaul Mundt ctrl_outl((unsigned long)pgd, MMU_TTB); 53f15cbe6fSPaul Mundt } 54f15cbe6fSPaul Mundt 55f15cbe6fSPaul Mundt static inline pgd_t *get_TTB(void) 56f15cbe6fSPaul Mundt { 57f15cbe6fSPaul Mundt return (pgd_t *)ctrl_inl(MMU_TTB); 58f15cbe6fSPaul Mundt } 59f15cbe6fSPaul Mundt #endif /* __ASM_SH_MMU_CONTEXT_32_H */ 60