1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * OpenRISC Linux
4  *
5  * Linux architectural port borrowing liberally from similar works of
6  * others.  All original copyrights apply as per the original source
7  * declaration.
8  *
9  * OpenRISC implementation:
10  * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
11  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
12  * et al.
13  */
14 
15 #ifndef __ASM_OPENRISC_TLBFLUSH_H
16 #define __ASM_OPENRISC_TLBFLUSH_H
17 
18 #include <linux/mm.h>
19 #include <asm/processor.h>
20 #include <asm/pgalloc.h>
21 #include <asm/current.h>
22 #include <linux/sched.h>
23 
24 /*
25  *  - flush_tlb() flushes the current mm struct TLBs
26  *  - flush_tlb_all() flushes all processes TLBs
27  *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
28  *  - flush_tlb_page(vma, vmaddr) flushes one page
29  *  - flush_tlb_range(mm, start, end) flushes a range of pages
30  */
31 extern void local_flush_tlb_all(void);
32 extern void local_flush_tlb_mm(struct mm_struct *mm);
33 extern void local_flush_tlb_page(struct vm_area_struct *vma,
34 				 unsigned long addr);
35 extern void local_flush_tlb_range(struct vm_area_struct *vma,
36 				  unsigned long start,
37 				  unsigned long end);
38 
39 #ifndef CONFIG_SMP
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 #else
45 extern void flush_tlb_all(void);
46 extern void flush_tlb_mm(struct mm_struct *mm);
47 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
48 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
49 			    unsigned long end);
50 #endif
51 
52 static inline void flush_tlb(void)
53 {
54 	flush_tlb_mm(current->mm);
55 }
56 
57 static inline void flush_tlb_kernel_range(unsigned long start,
58 					  unsigned long end)
59 {
60 	flush_tlb_range(NULL, start, end);
61 }
62 
63 #endif /* __ASM_OPENRISC_TLBFLUSH_H */
64