1
2#ifndef __ASM_SH_MMU_CONTEXT_32_H
3#define __ASM_SH_MMU_CONTEXT_32_H
4
5
6
7
8
9static inline void destroy_context(struct mm_struct *mm)
10{
11
12}
13
14#ifdef CONFIG_CPU_HAS_PTEAEX
15static inline void set_asid(unsigned long asid)
16{
17 __raw_writel(asid, MMU_PTEAEX);
18}
19
20static inline unsigned long get_asid(void)
21{
22 return __raw_readl(MMU_PTEAEX) & MMU_CONTEXT_ASID_MASK;
23}
24#else
25static inline void set_asid(unsigned long asid)
26{
27 unsigned long __dummy;
28
29 __asm__ __volatile__ ("mov.l %2, %0\n\t"
30 "and %3, %0\n\t"
31 "or %1, %0\n\t"
32 "mov.l %0, %2"
33 : "=&r" (__dummy)
34 : "r" (asid), "m" (__m(MMU_PTEH)),
35 "r" (0xffffff00));
36}
37
38static inline unsigned long get_asid(void)
39{
40 unsigned long asid;
41
42 __asm__ __volatile__ ("mov.l %1, %0"
43 : "=r" (asid)
44 : "m" (__m(MMU_PTEH)));
45 asid &= MMU_CONTEXT_ASID_MASK;
46 return asid;
47}
48#endif
49
50
51static inline void set_TTB(pgd_t *pgd)
52{
53 __raw_writel((unsigned long)pgd, MMU_TTB);
54}
55
56static inline pgd_t *get_TTB(void)
57{
58 return (pgd_t *)__raw_readl(MMU_TTB);
59}
60#endif
61