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 #include <asm/pgalloc.h> 19 20 extern void _tlbie(unsigned long address); 21 extern void _tlbia(void); 22 23 #define __tlbia() { preempt_disable(); _tlbia(); preempt_enable(); } 24 #define __tlbie(x) { _tlbie(x); } 25 26 static inline void local_flush_tlb_all(void) 27 { __tlbia(); } 28 static inline void local_flush_tlb_mm(struct mm_struct *mm) 29 { __tlbia(); } 30 static inline void local_flush_tlb_page(struct vm_area_struct *vma, 31 unsigned long vmaddr) 32 { __tlbie(vmaddr); } 33 static inline void local_flush_tlb_range(struct vm_area_struct *vma, 34 unsigned long start, unsigned long end) 35 { __tlbia(); } 36 37 #define flush_tlb_kernel_range(start, end) do { } while (0) 38 39 #define update_mmu_cache(vma, addr, ptep) do { } while (0) 40 41 #define flush_tlb_all local_flush_tlb_all 42 #define flush_tlb_mm local_flush_tlb_mm 43 #define flush_tlb_page local_flush_tlb_page 44 #define flush_tlb_range local_flush_tlb_range 45 46 /* 47 * This is called in munmap when we have freed up some page-table 48 * pages. We don't need to do anything here, there's nothing special 49 * about our page-table pages. -- paulus 50 */ 51 static inline void flush_tlb_pgtables(struct mm_struct *mm, 52 unsigned long start, unsigned long end) { } 53 54 #else /* CONFIG_MMU */ 55 56 #define flush_tlb() BUG() 57 #define flush_tlb_all() BUG() 58 #define flush_tlb_mm(mm) BUG() 59 #define flush_tlb_page(vma, addr) BUG() 60 #define flush_tlb_range(mm, start, end) BUG() 61 #define flush_tlb_pgtables(mm, start, end) BUG() 62 #define flush_tlb_kernel_range(start, end) BUG() 63 64 #endif /* CONFIG_MMU */ 65 66 #endif /* _ASM_MICROBLAZE_TLBFLUSH_H */ 67