From cdcc970829e81da3445346cb71b2ea264c9952b9 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Fri, 9 Nov 2007 16:37:18 +0900 Subject: sh: Move in the SH-5 mmu_context headers. Signed-off-by: Paul Mundt --- include/asm-sh/mmu_context_32.h | 47 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 include/asm-sh/mmu_context_32.h (limited to 'include/asm-sh/mmu_context_32.h') diff --git a/include/asm-sh/mmu_context_32.h b/include/asm-sh/mmu_context_32.h new file mode 100644 index 000000000000..f4f9aebd68b7 --- /dev/null +++ b/include/asm-sh/mmu_context_32.h @@ -0,0 +1,47 @@ +#ifndef __ASM_SH_MMU_CONTEXT_32_H +#define __ASM_SH_MMU_CONTEXT_32_H + +/* + * Destroy context related info for an mm_struct that is about + * to be put to rest. + */ +static inline void destroy_context(struct mm_struct *mm) +{ + /* Do nothing */ +} + +static inline void set_asid(unsigned long asid) +{ + unsigned long __dummy; + + __asm__ __volatile__ ("mov.l %2, %0\n\t" + "and %3, %0\n\t" + "or %1, %0\n\t" + "mov.l %0, %2" + : "=&r" (__dummy) + : "r" (asid), "m" (__m(MMU_PTEH)), + "r" (0xffffff00)); +} + +static inline unsigned long get_asid(void) +{ + unsigned long asid; + + __asm__ __volatile__ ("mov.l %1, %0" + : "=r" (asid) + : "m" (__m(MMU_PTEH))); + asid &= MMU_CONTEXT_ASID_MASK; + return asid; +} + +/* MMU_TTB is used for optimizing the fault handling. */ +static inline void set_TTB(pgd_t *pgd) +{ + ctrl_outl((unsigned long)pgd, MMU_TTB); +} + +static inline pgd_t *get_TTB(void) +{ + return (pgd_t *)ctrl_inl(MMU_TTB); +} +#endif /* __ASM_SH_MMU_CONTEXT_32_H */ -- cgit v1.2.3