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_EXECUTE | _PAGE_WRITE | _PAGE_READ | \ 20 _PAGE_K_EXECUTE | _PAGE_K_WRITE | _PAGE_K_READ) 21 22 #ifndef __ASSEMBLY__ 23 24 #define tlb_flush(tlb) local_flush_tlb_mm((tlb)->mm) 25 26 /* 27 * This pair is called at time of munmap/exit to flush cache and TLB entries 28 * for mappings being torn down. 29 * 1) cache-flush part -implemented via tlb_start_vma( ) can be NOP (for now) 30 * as we don't support aliasing configs in our VIPT D$. 31 * 2) tlb-flush part - implemted via tlb_end_vma( ) can be NOP as well- 32 * albiet for difft reasons - its better handled by moving to new ASID 33 * 34 * Note, read http://lkml.org/lkml/2004/1/15/6 35 */ 36 #define tlb_start_vma(tlb, vma) 37 #define tlb_end_vma(tlb, vma) 38 39 #define __tlb_remove_tlb_entry(tlb, ptep, address) 40 41 #include <linux/pagemap.h> 42 #include <asm-generic/tlb.h> 43 44 #ifdef CONFIG_ARC_DBG_TLB_PARANOIA 45 void tlb_paranoid_check(unsigned int pid_sw, unsigned long address); 46 #else 47 #define tlb_paranoid_check(a, b) 48 #endif 49 50 void arc_mmu_init(void); 51 extern char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len); 52 void __init read_decode_mmu_bcr(void); 53 54 #endif /* __ASSEMBLY__ */ 55 56 #endif /* __KERNEL__ */ 57 58 #endif /* _ASM_ARC_TLB_H */ 59