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 */
48