1 /* 2 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 */ 8 9 #ifndef _ASM_ARC_TLB_H 10 #define _ASM_ARC_TLB_H 11 12 #ifdef __KERNEL__ 13 14 #include <asm/pgtable.h> 15 16 /* Masks for actual TLB "PD"s */ 17 #define PTE_BITS_IN_PD0 (_PAGE_GLOBAL | _PAGE_PRESENT) 18 #define PTE_BITS_IN_PD1 (PAGE_MASK | _PAGE_CACHEABLE | \ 19 _PAGE_U_EXECUTE | _PAGE_U_WRITE | _PAGE_U_READ | \ 20 _PAGE_K_EXECUTE | _PAGE_K_WRITE | _PAGE_K_READ) 21 22 #ifndef __ASSEMBLY__ 23 24 #define tlb_flush(tlb) \ 25 do { \ 26 if (tlb->fullmm) \ 27 flush_tlb_mm((tlb)->mm); \ 28 } while (0) 29 30 /* 31 * This pair is called at time of munmap/exit to flush cache and TLB entries 32 * for mappings being torn down. 33 * 1) cache-flush part -implemented via tlb_start_vma( ) for VIPT aliasing D$ 34 * 2) tlb-flush part - implemted via tlb_end_vma( ) flushes the TLB range 35 * 36 * Note, read http://lkml.org/lkml/2004/1/15/6 37 */ 38 #ifndef CONFIG_ARC_CACHE_VIPT_ALIASING 39 #define tlb_start_vma(tlb, vma) 40 #else 41 #define tlb_start_vma(tlb, vma) \ 42 do { \ 43 if (!tlb->fullmm) \ 44 flush_cache_range(vma, vma->vm_start, vma->vm_end); \ 45 } while(0) 46 #endif 47 48 #define tlb_end_vma(tlb, vma) \ 49 do { \ 50 if (!tlb->fullmm) \ 51 flush_tlb_range(vma, vma->vm_start, vma->vm_end); \ 52 } while (0) 53 54 #define __tlb_remove_tlb_entry(tlb, ptep, address) 55 56 #include <linux/pagemap.h> 57 #include <asm-generic/tlb.h> 58 59 #ifdef CONFIG_ARC_DBG_TLB_PARANOIA 60 void tlb_paranoid_check(unsigned int pid_sw, unsigned long address); 61 #else 62 #define tlb_paranoid_check(a, b) 63 #endif 64 65 void arc_mmu_init(void); 66 extern char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len); 67 void __init read_decode_mmu_bcr(void); 68 69 #endif /* __ASSEMBLY__ */ 70 71 #endif /* __KERNEL__ */ 72 73 #endif /* _ASM_ARC_TLB_H */ 74