summaryrefslogtreecommitdiffstats
path: root/arch/sh/include/asm/mmu_context_32.h
blob: f4f9aebd68b797a7df2d9005af2e6e3ad0b4d58f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
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 */