Vineet Gupta | cc562d2 | 2013-01-18 15:12:19 +0530 | [diff] [blame] | 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 | |
Vineet Gupta | 8d56bec | 2013-04-05 18:38:31 +0530 | [diff] [blame^] | 24 | #define tlb_flush(tlb) \ |
| 25 | do { \ |
| 26 | if (tlb->fullmm) \ |
| 27 | flush_tlb_mm((tlb)->mm); \ |
| 28 | } while (0) |
Vineet Gupta | d79e678 | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 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( ) can be NOP (for now) |
| 34 | * as we don't support aliasing configs in our VIPT D$. |
Vineet Gupta | 8d56bec | 2013-04-05 18:38:31 +0530 | [diff] [blame^] | 35 | * 2) tlb-flush part - implemted via tlb_end_vma( ) flushes the TLB range |
Vineet Gupta | d79e678 | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 36 | * |
| 37 | * Note, read http://lkml.org/lkml/2004/1/15/6 |
| 38 | */ |
| 39 | #define tlb_start_vma(tlb, vma) |
Vineet Gupta | 8d56bec | 2013-04-05 18:38:31 +0530 | [diff] [blame^] | 40 | |
| 41 | #define tlb_end_vma(tlb, vma) \ |
| 42 | do { \ |
| 43 | if (!tlb->fullmm) \ |
| 44 | flush_tlb_range(vma, vma->vm_start, vma->vm_end); \ |
| 45 | } while (0) |
Vineet Gupta | d79e678 | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 46 | |
| 47 | #define __tlb_remove_tlb_entry(tlb, ptep, address) |
| 48 | |
Vineet Gupta | cc562d2 | 2013-01-18 15:12:19 +0530 | [diff] [blame] | 49 | #include <linux/pagemap.h> |
| 50 | #include <asm-generic/tlb.h> |
| 51 | |
| 52 | #ifdef CONFIG_ARC_DBG_TLB_PARANOIA |
| 53 | void tlb_paranoid_check(unsigned int pid_sw, unsigned long address); |
| 54 | #else |
| 55 | #define tlb_paranoid_check(a, b) |
| 56 | #endif |
| 57 | |
| 58 | void arc_mmu_init(void); |
| 59 | extern char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len); |
| 60 | void __init read_decode_mmu_bcr(void); |
| 61 | |
| 62 | #endif /* __ASSEMBLY__ */ |
| 63 | |
| 64 | #endif /* __KERNEL__ */ |
| 65 | |
| 66 | #endif /* _ASM_ARC_TLB_H */ |