1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
4*4882a593Smuzhiyun * Copyright (C) 2008-2009 PetaLogix
5*4882a593Smuzhiyun * Copyright (C) 2006 Atmark Techno, Inc.
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #ifndef _ASM_MICROBLAZE_TLBFLUSH_H
9*4882a593Smuzhiyun #define _ASM_MICROBLAZE_TLBFLUSH_H
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #ifdef CONFIG_MMU
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include <linux/sched.h>
14*4882a593Smuzhiyun #include <linux/threads.h>
15*4882a593Smuzhiyun #include <asm/processor.h> /* For TASK_SIZE */
16*4882a593Smuzhiyun #include <asm/mmu.h>
17*4882a593Smuzhiyun #include <asm/page.h>
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun extern void _tlbie(unsigned long address);
20*4882a593Smuzhiyun extern void _tlbia(void);
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun #define __tlbia() { preempt_disable(); _tlbia(); preempt_enable(); }
23*4882a593Smuzhiyun #define __tlbie(x) { _tlbie(x); }
24*4882a593Smuzhiyun
local_flush_tlb_all(void)25*4882a593Smuzhiyun static inline void local_flush_tlb_all(void)
26*4882a593Smuzhiyun { __tlbia(); }
local_flush_tlb_mm(struct mm_struct * mm)27*4882a593Smuzhiyun static inline void local_flush_tlb_mm(struct mm_struct *mm)
28*4882a593Smuzhiyun { __tlbia(); }
local_flush_tlb_page(struct vm_area_struct * vma,unsigned long vmaddr)29*4882a593Smuzhiyun static inline void local_flush_tlb_page(struct vm_area_struct *vma,
30*4882a593Smuzhiyun unsigned long vmaddr)
31*4882a593Smuzhiyun { __tlbie(vmaddr); }
local_flush_tlb_range(struct vm_area_struct * vma,unsigned long start,unsigned long end)32*4882a593Smuzhiyun static inline void local_flush_tlb_range(struct vm_area_struct *vma,
33*4882a593Smuzhiyun unsigned long start, unsigned long end)
34*4882a593Smuzhiyun { __tlbia(); }
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun #define flush_tlb_kernel_range(start, end) do { } while (0)
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun #define update_mmu_cache(vma, addr, ptep) do { } while (0)
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun #define flush_tlb_all local_flush_tlb_all
41*4882a593Smuzhiyun #define flush_tlb_mm local_flush_tlb_mm
42*4882a593Smuzhiyun #define flush_tlb_page local_flush_tlb_page
43*4882a593Smuzhiyun #define flush_tlb_range local_flush_tlb_range
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun /*
46*4882a593Smuzhiyun * This is called in munmap when we have freed up some page-table
47*4882a593Smuzhiyun * pages. We don't need to do anything here, there's nothing special
48*4882a593Smuzhiyun * about our page-table pages. -- paulus
49*4882a593Smuzhiyun */
flush_tlb_pgtables(struct mm_struct * mm,unsigned long start,unsigned long end)50*4882a593Smuzhiyun static inline void flush_tlb_pgtables(struct mm_struct *mm,
51*4882a593Smuzhiyun unsigned long start, unsigned long end) { }
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun #else /* CONFIG_MMU */
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun #define flush_tlb() BUG()
56*4882a593Smuzhiyun #define flush_tlb_all() BUG()
57*4882a593Smuzhiyun #define flush_tlb_mm(mm) BUG()
58*4882a593Smuzhiyun #define flush_tlb_page(vma, addr) BUG()
59*4882a593Smuzhiyun #define flush_tlb_range(mm, start, end) BUG()
60*4882a593Smuzhiyun #define flush_tlb_pgtables(mm, start, end) BUG()
61*4882a593Smuzhiyun #define flush_tlb_kernel_range(start, end) BUG()
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun #endif /* CONFIG_MMU */
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun #endif /* _ASM_MICROBLAZE_TLBFLUSH_H */
66