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 #include <linux/sched.h>
12 #include <linux/threads.h>
13 #include <asm/processor.h>	/* For TASK_SIZE */
14 #include <asm/mmu.h>
15 #include <asm/page.h>
16 
17 extern void _tlbie(unsigned long address);
18 extern void _tlbia(void);
19 
20 #define __tlbia()	{ preempt_disable(); _tlbia(); preempt_enable(); }
21 #define __tlbie(x)	{ _tlbie(x); }
22 
local_flush_tlb_all(void)23 static inline void local_flush_tlb_all(void)
24 	{ __tlbia(); }
local_flush_tlb_mm(struct mm_struct * mm)25 static inline void local_flush_tlb_mm(struct mm_struct *mm)
26 	{ __tlbia(); }
local_flush_tlb_page(struct vm_area_struct * vma,unsigned long vmaddr)27 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
28 				unsigned long vmaddr)
29 	{ __tlbie(vmaddr); }
local_flush_tlb_range(struct vm_area_struct * vma,unsigned long start,unsigned long end)30 static inline void local_flush_tlb_range(struct vm_area_struct *vma,
31 		unsigned long start, unsigned long end)
32 	{ __tlbia(); }
33 
34 #define flush_tlb_kernel_range(start, end)	do { } while (0)
35 
36 #define update_mmu_cache_range(vmf, vma, addr, ptep, nr) do { } while (0)
37 #define update_mmu_cache(vma, addr, pte) \
38 	update_mmu_cache_range(NULL, vma, addr, ptep, 1)
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 #endif /* _ASM_MICROBLAZE_TLBFLUSH_H */
54