m32r: move include/asm-m32r headers to arch/m32r/include/asm
[linux-2.6.git] / arch / m32r / include / asm / tlbflush.h
1 #ifndef _ASM_M32R_TLBFLUSH_H
2 #define _ASM_M32R_TLBFLUSH_H
3
4 #include <asm/m32r.h>
5
6 /*
7  * TLB flushing:
8  *
9  *  - flush_tlb() flushes the current mm struct TLBs
10  *  - flush_tlb_all() flushes all processes TLBs
11  *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
12  *  - flush_tlb_page(vma, vmaddr) flushes one page
13  *  - flush_tlb_range(vma, start, end) flushes a range of pages
14  *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
15  */
16
17 extern void local_flush_tlb_all(void);
18 extern void local_flush_tlb_mm(struct mm_struct *);
19 extern void local_flush_tlb_page(struct vm_area_struct *, unsigned long);
20 extern void local_flush_tlb_range(struct vm_area_struct *, unsigned long,
21         unsigned long);
22
23 #ifndef CONFIG_SMP
24 #ifdef CONFIG_MMU
25 #define flush_tlb_all()                 local_flush_tlb_all()
26 #define flush_tlb_mm(mm)                local_flush_tlb_mm(mm)
27 #define flush_tlb_page(vma, page)       local_flush_tlb_page(vma, page)
28 #define flush_tlb_range(vma, start, end)        \
29         local_flush_tlb_range(vma, start, end)
30 #define flush_tlb_kernel_range(start, end)      local_flush_tlb_all()
31 #else   /* CONFIG_MMU */
32 #define flush_tlb_all()                 do { } while (0)
33 #define flush_tlb_mm(mm)                do { } while (0)
34 #define flush_tlb_page(vma, vmaddr)     do { } while (0)
35 #define flush_tlb_range(vma, start, end)        do { } while (0)
36 #endif  /* CONFIG_MMU */
37 #else   /* CONFIG_SMP */
38 extern void smp_flush_tlb_all(void);
39 extern void smp_flush_tlb_mm(struct mm_struct *);
40 extern void smp_flush_tlb_page(struct vm_area_struct *, unsigned long);
41 extern void smp_flush_tlb_range(struct vm_area_struct *, unsigned long,
42         unsigned long);
43
44 #define flush_tlb_all()                 smp_flush_tlb_all()
45 #define flush_tlb_mm(mm)                smp_flush_tlb_mm(mm)
46 #define flush_tlb_page(vma, page)       smp_flush_tlb_page(vma, page)
47 #define flush_tlb_range(vma, start, end)        \
48         smp_flush_tlb_range(vma, start, end)
49 #define flush_tlb_kernel_range(start, end)      smp_flush_tlb_all()
50 #endif  /* CONFIG_SMP */
51
52 static __inline__ void __flush_tlb_page(unsigned long page)
53 {
54         unsigned int tmpreg0, tmpreg1, tmpreg2;
55
56         __asm__ __volatile__ (
57                 "seth   %0, #high(%4)   \n\t"
58                 "st     %3, @(%5, %0)   \n\t"
59                 "ldi    %1, #1          \n\t"
60                 "st     %1, @(%6, %0)   \n\t"
61                 "add3   %1, %0, %7      \n\t"
62                 ".fillinsn              \n"
63                 "1:                     \n\t"
64                 "ld     %2, @(%6, %0)   \n\t"
65                 "bnez   %2, 1b          \n\t"
66                 "ld     %0, @%1+        \n\t"
67                 "ld     %1, @%1         \n\t"
68                 "st     %2, @+%0        \n\t"
69                 "st     %2, @+%1        \n\t"
70                 : "=&r" (tmpreg0), "=&r" (tmpreg1), "=&r" (tmpreg2)
71                 : "r" (page), "i" (MMU_REG_BASE), "i" (MSVA_offset),
72                 "i" (MTOP_offset), "i" (MIDXI_offset)
73                 : "memory"
74         );
75 }
76
77 static __inline__ void __flush_tlb_all(void)
78 {
79         unsigned int tmpreg0, tmpreg1;
80
81         __asm__ __volatile__ (
82                 "seth   %0, #high(%2)           \n\t"
83                 "or3    %0, %0, #low(%2)        \n\t"
84                 "ldi    %1, #0xc                \n\t"
85                 "st     %1, @%0                 \n\t"
86                 ".fillinsn                      \n"
87                 "1:                             \n\t"
88                 "ld     %1, @%0                 \n\t"
89                 "bnez   %1, 1b                  \n\t"
90                 : "=&r" (tmpreg0), "=&r" (tmpreg1)
91                 : "i" (MTOP) : "memory"
92         );
93 }
94
95 extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
96
97 #endif  /* _ASM_M32R_TLBFLUSH_H */