1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
4 * Copyright (C) 2008-2009 PetaLogix
5 * Copyright (C) 2006 Atmark Techno, Inc.
6 */
7
8 #ifndef _ASM_MICROBLAZE_TLBFLUSH_H
9 #define _ASM_MICROBLAZE_TLBFLUSH_H
10
11 #ifdef CONFIG_MMU
12
13 #include <linux/sched.h>
14 #include <linux/threads.h>
15 #include <asm/processor.h> /* For TASK_SIZE */
16 #include <asm/mmu.h>
17 #include <asm/page.h>
18
19 extern void _tlbie(unsigned long address);
20 extern void _tlbia(void);
21
22 #define __tlbia() { preempt_disable(); _tlbia(); preempt_enable(); }
23 #define __tlbie(x) { _tlbie(x); }
24
local_flush_tlb_all(void)25 static inline void local_flush_tlb_all(void)
26 { __tlbia(); }
local_flush_tlb_mm(struct mm_struct * mm)27 static inline void local_flush_tlb_mm(struct mm_struct *mm)
28 { __tlbia(); }
local_flush_tlb_page(struct vm_area_struct * vma,unsigned long vmaddr)29 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
30 unsigned long vmaddr)
31 { __tlbie(vmaddr); }
local_flush_tlb_range(struct vm_area_struct * vma,unsigned long start,unsigned long end)32 static inline void local_flush_tlb_range(struct vm_area_struct *vma,
33 unsigned long start, unsigned long end)
34 { __tlbia(); }
35
36 #define flush_tlb_kernel_range(start, end) do { } while (0)
37
38 #define update_mmu_cache(vma, addr, ptep) do { } while (0)
39
40 #define flush_tlb_all local_flush_tlb_all
41 #define flush_tlb_mm local_flush_tlb_mm
42 #define flush_tlb_page local_flush_tlb_page
43 #define flush_tlb_range local_flush_tlb_range
44
45 /*
46 * This is called in munmap when we have freed up some page-table
47 * pages. We don't need to do anything here, there's nothing special
48 * about our page-table pages. -- paulus
49 */
flush_tlb_pgtables(struct mm_struct * mm,unsigned long start,unsigned long end)50 static inline void flush_tlb_pgtables(struct mm_struct *mm,
51 unsigned long start, unsigned long end) { }
52
53 #else /* CONFIG_MMU */
54
55 #define flush_tlb() BUG()
56 #define flush_tlb_all() BUG()
57 #define flush_tlb_mm(mm) BUG()
58 #define flush_tlb_page(vma, addr) BUG()
59 #define flush_tlb_range(mm, start, end) BUG()
60 #define flush_tlb_pgtables(mm, start, end) BUG()
61 #define flush_tlb_kernel_range(start, end) BUG()
62
63 #endif /* CONFIG_MMU */
64
65 #endif /* _ASM_MICROBLAZE_TLBFLUSH_H */
66