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
19extern void _tlbie(unsigned long address);
20extern void _tlbia(void);
21
22#define __tlbia()	{ preempt_disable(); _tlbia(); preempt_enable(); }
23#define __tlbie(x)	{ _tlbie(x); }
24
25static inline void local_flush_tlb_all(void)
26	{ __tlbia(); }
27static inline void local_flush_tlb_mm(struct mm_struct *mm)
28	{ __tlbia(); }
29static inline void local_flush_tlb_page(struct vm_area_struct *vma,
30				unsigned long vmaddr)
31	{ __tlbie(vmaddr); }
32static 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 */
50static 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