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-rw-r--r--include/asm-arm/tlbflush.h500
1 files changed, 0 insertions, 500 deletions
diff --git a/include/asm-arm/tlbflush.h b/include/asm-arm/tlbflush.h
deleted file mode 100644
index 909656c..0000000
--- a/include/asm-arm/tlbflush.h
+++ /dev/null
@@ -1,500 +0,0 @@
-/*
- * linux/include/asm-arm/tlbflush.h
- *
- * Copyright (C) 1999-2003 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef _ASMARM_TLBFLUSH_H
-#define _ASMARM_TLBFLUSH_H
-
-
-#ifndef CONFIG_MMU
-
-#define tlb_flush(tlb) ((void) tlb)
-
-#else /* CONFIG_MMU */
-
-#include <asm/glue.h>
-
-#define TLB_V3_PAGE (1 << 0)
-#define TLB_V4_U_PAGE (1 << 1)
-#define TLB_V4_D_PAGE (1 << 2)
-#define TLB_V4_I_PAGE (1 << 3)
-#define TLB_V6_U_PAGE (1 << 4)
-#define TLB_V6_D_PAGE (1 << 5)
-#define TLB_V6_I_PAGE (1 << 6)
-
-#define TLB_V3_FULL (1 << 8)
-#define TLB_V4_U_FULL (1 << 9)
-#define TLB_V4_D_FULL (1 << 10)
-#define TLB_V4_I_FULL (1 << 11)
-#define TLB_V6_U_FULL (1 << 12)
-#define TLB_V6_D_FULL (1 << 13)
-#define TLB_V6_I_FULL (1 << 14)
-
-#define TLB_V6_U_ASID (1 << 16)
-#define TLB_V6_D_ASID (1 << 17)
-#define TLB_V6_I_ASID (1 << 18)
-
-#define TLB_L2CLEAN_FR (1 << 29) /* Feroceon */
-#define TLB_DCLEAN (1 << 30)
-#define TLB_WB (1 << 31)
-
-/*
- * MMU TLB Model
- * =============
- *
- * We have the following to choose from:
- * v3 - ARMv3
- * v4 - ARMv4 without write buffer
- * v4wb - ARMv4 with write buffer without I TLB flush entry instruction
- * v4wbi - ARMv4 with write buffer with I TLB flush entry instruction
- * fr - Feroceon (v4wbi with non-outer-cacheable page table walks)
- * v6wbi - ARMv6 with write buffer with I TLB flush entry instruction
- */
-#undef _TLB
-#undef MULTI_TLB
-
-#define v3_tlb_flags (TLB_V3_FULL | TLB_V3_PAGE)
-
-#ifdef CONFIG_CPU_TLB_V3
-# define v3_possible_flags v3_tlb_flags
-# define v3_always_flags v3_tlb_flags
-# ifdef _TLB
-# define MULTI_TLB 1
-# else
-# define _TLB v3
-# endif
-#else
-# define v3_possible_flags 0
-# define v3_always_flags (-1UL)
-#endif
-
-#define v4_tlb_flags (TLB_V4_U_FULL | TLB_V4_U_PAGE)
-
-#ifdef CONFIG_CPU_TLB_V4WT
-# define v4_possible_flags v4_tlb_flags
-# define v4_always_flags v4_tlb_flags
-# ifdef _TLB
-# define MULTI_TLB 1
-# else
-# define _TLB v4
-# endif
-#else
-# define v4_possible_flags 0
-# define v4_always_flags (-1UL)
-#endif
-
-#define v4wbi_tlb_flags (TLB_WB | TLB_DCLEAN | \
- TLB_V4_I_FULL | TLB_V4_D_FULL | \
- TLB_V4_I_PAGE | TLB_V4_D_PAGE)
-
-#ifdef CONFIG_CPU_TLB_V4WBI
-# define v4wbi_possible_flags v4wbi_tlb_flags
-# define v4wbi_always_flags v4wbi_tlb_flags
-# ifdef _TLB
-# define MULTI_TLB 1
-# else
-# define _TLB v4wbi
-# endif
-#else
-# define v4wbi_possible_flags 0
-# define v4wbi_always_flags (-1UL)
-#endif
-
-#define fr_tlb_flags (TLB_WB | TLB_DCLEAN | TLB_L2CLEAN_FR | \
- TLB_V4_I_FULL | TLB_V4_D_FULL | \
- TLB_V4_I_PAGE | TLB_V4_D_PAGE)
-
-#ifdef CONFIG_CPU_TLB_FEROCEON
-# define fr_possible_flags fr_tlb_flags
-# define fr_always_flags fr_tlb_flags
-# ifdef _TLB
-# define MULTI_TLB 1
-# else
-# define _TLB v4wbi
-# endif
-#else
-# define fr_possible_flags 0
-# define fr_always_flags (-1UL)
-#endif
-
-#define v4wb_tlb_flags (TLB_WB | TLB_DCLEAN | \
- TLB_V4_I_FULL | TLB_V4_D_FULL | \
- TLB_V4_D_PAGE)
-
-#ifdef CONFIG_CPU_TLB_V4WB
-# define v4wb_possible_flags v4wb_tlb_flags
-# define v4wb_always_flags v4wb_tlb_flags
-# ifdef _TLB
-# define MULTI_TLB 1
-# else
-# define _TLB v4wb
-# endif
-#else
-# define v4wb_possible_flags 0
-# define v4wb_always_flags (-1UL)
-#endif
-
-#define v6wbi_tlb_flags (TLB_WB | TLB_DCLEAN | \
- TLB_V6_I_FULL | TLB_V6_D_FULL | \
- TLB_V6_I_PAGE | TLB_V6_D_PAGE | \
- TLB_V6_I_ASID | TLB_V6_D_ASID)
-
-#ifdef CONFIG_CPU_TLB_V6
-# define v6wbi_possible_flags v6wbi_tlb_flags
-# define v6wbi_always_flags v6wbi_tlb_flags
-# ifdef _TLB
-# define MULTI_TLB 1
-# else
-# define _TLB v6wbi
-# endif
-#else
-# define v6wbi_possible_flags 0
-# define v6wbi_always_flags (-1UL)
-#endif
-
-#ifdef CONFIG_CPU_TLB_V7
-# define v7wbi_possible_flags v6wbi_tlb_flags
-# define v7wbi_always_flags v6wbi_tlb_flags
-# ifdef _TLB
-# define MULTI_TLB 1
-# else
-# define _TLB v7wbi
-# endif
-#else
-# define v7wbi_possible_flags 0
-# define v7wbi_always_flags (-1UL)
-#endif
-
-#ifndef _TLB
-#error Unknown TLB model
-#endif
-
-#ifndef __ASSEMBLY__
-
-#include <linux/sched.h>
-
-struct cpu_tlb_fns {
- void (*flush_user_range)(unsigned long, unsigned long, struct vm_area_struct *);
- void (*flush_kern_range)(unsigned long, unsigned long);
- unsigned long tlb_flags;
-};
-
-/*
- * Select the calling method
- */
-#ifdef MULTI_TLB
-
-#define __cpu_flush_user_tlb_range cpu_tlb.flush_user_range
-#define __cpu_flush_kern_tlb_range cpu_tlb.flush_kern_range
-
-#else
-
-#define __cpu_flush_user_tlb_range __glue(_TLB,_flush_user_tlb_range)
-#define __cpu_flush_kern_tlb_range __glue(_TLB,_flush_kern_tlb_range)
-
-extern void __cpu_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
-extern void __cpu_flush_kern_tlb_range(unsigned long, unsigned long);
-
-#endif
-
-extern struct cpu_tlb_fns cpu_tlb;
-
-#define __cpu_tlb_flags cpu_tlb.tlb_flags
-
-/*
- * TLB Management
- * ==============
- *
- * The arch/arm/mm/tlb-*.S files implement these methods.
- *
- * The TLB specific code is expected to perform whatever tests it
- * needs to determine if it should invalidate the TLB for each
- * call. Start addresses are inclusive and end addresses are
- * exclusive; it is safe to round these addresses down.
- *
- * flush_tlb_all()
- *
- * Invalidate the entire TLB.
- *
- * flush_tlb_mm(mm)
- *
- * Invalidate all TLB entries in a particular address
- * space.
- * - mm - mm_struct describing address space
- *
- * flush_tlb_range(mm,start,end)
- *
- * Invalidate a range of TLB entries in the specified
- * address space.
- * - mm - mm_struct describing address space
- * - start - start address (may not be aligned)
- * - end - end address (exclusive, may not be aligned)
- *
- * flush_tlb_page(vaddr,vma)
- *
- * Invalidate the specified page in the specified address range.
- * - vaddr - virtual address (may not be aligned)
- * - vma - vma_struct describing address range
- *
- * flush_kern_tlb_page(kaddr)
- *
- * Invalidate the TLB entry for the specified page. The address
- * will be in the kernels virtual memory space. Current uses
- * only require the D-TLB to be invalidated.
- * - kaddr - Kernel virtual memory address
- */
-
-/*
- * We optimise the code below by:
- * - building a set of TLB flags that might be set in __cpu_tlb_flags
- * - building a set of TLB flags that will always be set in __cpu_tlb_flags
- * - if we're going to need __cpu_tlb_flags, access it once and only once
- *
- * This allows us to build optimal assembly for the single-CPU type case,
- * and as close to optimal given the compiler constrants for multi-CPU
- * case. We could do better for the multi-CPU case if the compiler
- * implemented the "%?" method, but this has been discontinued due to too
- * many people getting it wrong.
- */
-#define possible_tlb_flags (v3_possible_flags | \
- v4_possible_flags | \
- v4wbi_possible_flags | \
- fr_possible_flags | \
- v4wb_possible_flags | \
- v6wbi_possible_flags)
-
-#define always_tlb_flags (v3_always_flags & \
- v4_always_flags & \
- v4wbi_always_flags & \
- fr_always_flags & \
- v4wb_always_flags & \
- v6wbi_always_flags)
-
-#define tlb_flag(f) ((always_tlb_flags & (f)) || (__tlb_flag & possible_tlb_flags & (f)))
-
-static inline void local_flush_tlb_all(void)
-{
- const int zero = 0;
- const unsigned int __tlb_flag = __cpu_tlb_flags;
-
- if (tlb_flag(TLB_WB))
- dsb();
-
- if (tlb_flag(TLB_V3_FULL))
- asm("mcr p15, 0, %0, c6, c0, 0" : : "r" (zero) : "cc");
- if (tlb_flag(TLB_V4_U_FULL | TLB_V6_U_FULL))
- asm("mcr p15, 0, %0, c8, c7, 0" : : "r" (zero) : "cc");
- if (tlb_flag(TLB_V4_D_FULL | TLB_V6_D_FULL))
- asm("mcr p15, 0, %0, c8, c6, 0" : : "r" (zero) : "cc");
- if (tlb_flag(TLB_V4_I_FULL | TLB_V6_I_FULL))
- asm("mcr p15, 0, %0, c8, c5, 0" : : "r" (zero) : "cc");
-
- if (tlb_flag(TLB_V6_I_FULL | TLB_V6_D_FULL |
- TLB_V6_I_PAGE | TLB_V6_D_PAGE |
- TLB_V6_I_ASID | TLB_V6_D_ASID)) {
- /* flush the branch target cache */
- asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero) : "cc");
- dsb();
- isb();
- }
-}
-
-static inline void local_flush_tlb_mm(struct mm_struct *mm)
-{
- const int zero = 0;
- const int asid = ASID(mm);
- const unsigned int __tlb_flag = __cpu_tlb_flags;
-
- if (tlb_flag(TLB_WB))
- dsb();
-
- if (cpu_isset(smp_processor_id(), mm->cpu_vm_mask)) {
- if (tlb_flag(TLB_V3_FULL))
- asm("mcr p15, 0, %0, c6, c0, 0" : : "r" (zero) : "cc");
- if (tlb_flag(TLB_V4_U_FULL))
- asm("mcr p15, 0, %0, c8, c7, 0" : : "r" (zero) : "cc");
- if (tlb_flag(TLB_V4_D_FULL))
- asm("mcr p15, 0, %0, c8, c6, 0" : : "r" (zero) : "cc");
- if (tlb_flag(TLB_V4_I_FULL))
- asm("mcr p15, 0, %0, c8, c5, 0" : : "r" (zero) : "cc");
- }
-
- if (tlb_flag(TLB_V6_U_ASID))
- asm("mcr p15, 0, %0, c8, c7, 2" : : "r" (asid) : "cc");
- if (tlb_flag(TLB_V6_D_ASID))
- asm("mcr p15, 0, %0, c8, c6, 2" : : "r" (asid) : "cc");
- if (tlb_flag(TLB_V6_I_ASID))
- asm("mcr p15, 0, %0, c8, c5, 2" : : "r" (asid) : "cc");
-
- if (tlb_flag(TLB_V6_I_FULL | TLB_V6_D_FULL |
- TLB_V6_I_PAGE | TLB_V6_D_PAGE |
- TLB_V6_I_ASID | TLB_V6_D_ASID)) {
- /* flush the branch target cache */
- asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero) : "cc");
- dsb();
- }
-}
-
-static inline void
-local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
-{
- const int zero = 0;
- const unsigned int __tlb_flag = __cpu_tlb_flags;
-
- uaddr = (uaddr & PAGE_MASK) | ASID(vma->vm_mm);
-
- if (tlb_flag(TLB_WB))
- dsb();
-
- if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask)) {
- if (tlb_flag(TLB_V3_PAGE))
- asm("mcr p15, 0, %0, c6, c0, 0" : : "r" (uaddr) : "cc");
- if (tlb_flag(TLB_V4_U_PAGE))
- asm("mcr p15, 0, %0, c8, c7, 1" : : "r" (uaddr) : "cc");
- if (tlb_flag(TLB_V4_D_PAGE))
- asm("mcr p15, 0, %0, c8, c6, 1" : : "r" (uaddr) : "cc");
- if (tlb_flag(TLB_V4_I_PAGE))
- asm("mcr p15, 0, %0, c8, c5, 1" : : "r" (uaddr) : "cc");
- if (!tlb_flag(TLB_V4_I_PAGE) && tlb_flag(TLB_V4_I_FULL))
- asm("mcr p15, 0, %0, c8, c5, 0" : : "r" (zero) : "cc");
- }
-
- if (tlb_flag(TLB_V6_U_PAGE))
- asm("mcr p15, 0, %0, c8, c7, 1" : : "r" (uaddr) : "cc");
- if (tlb_flag(TLB_V6_D_PAGE))
- asm("mcr p15, 0, %0, c8, c6, 1" : : "r" (uaddr) : "cc");
- if (tlb_flag(TLB_V6_I_PAGE))
- asm("mcr p15, 0, %0, c8, c5, 1" : : "r" (uaddr) : "cc");
-
- if (tlb_flag(TLB_V6_I_FULL | TLB_V6_D_FULL |
- TLB_V6_I_PAGE | TLB_V6_D_PAGE |
- TLB_V6_I_ASID | TLB_V6_D_ASID)) {
- /* flush the branch target cache */
- asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero) : "cc");
- dsb();
- }
-}
-
-static inline void local_flush_tlb_kernel_page(unsigned long kaddr)
-{
- const int zero = 0;
- const unsigned int __tlb_flag = __cpu_tlb_flags;
-
- kaddr &= PAGE_MASK;
-
- if (tlb_flag(TLB_WB))
- dsb();
-
- if (tlb_flag(TLB_V3_PAGE))
- asm("mcr p15, 0, %0, c6, c0, 0" : : "r" (kaddr) : "cc");
- if (tlb_flag(TLB_V4_U_PAGE))
- asm("mcr p15, 0, %0, c8, c7, 1" : : "r" (kaddr) : "cc");
- if (tlb_flag(TLB_V4_D_PAGE))
- asm("mcr p15, 0, %0, c8, c6, 1" : : "r" (kaddr) : "cc");
- if (tlb_flag(TLB_V4_I_PAGE))
- asm("mcr p15, 0, %0, c8, c5, 1" : : "r" (kaddr) : "cc");
- if (!tlb_flag(TLB_V4_I_PAGE) && tlb_flag(TLB_V4_I_FULL))
- asm("mcr p15, 0, %0, c8, c5, 0" : : "r" (zero) : "cc");
-
- if (tlb_flag(TLB_V6_U_PAGE))
- asm("mcr p15, 0, %0, c8, c7, 1" : : "r" (kaddr) : "cc");
- if (tlb_flag(TLB_V6_D_PAGE))
- asm("mcr p15, 0, %0, c8, c6, 1" : : "r" (kaddr) : "cc");
- if (tlb_flag(TLB_V6_I_PAGE))
- asm("mcr p15, 0, %0, c8, c5, 1" : : "r" (kaddr) : "cc");
-
- if (tlb_flag(TLB_V6_I_FULL | TLB_V6_D_FULL |
- TLB_V6_I_PAGE | TLB_V6_D_PAGE |
- TLB_V6_I_ASID | TLB_V6_D_ASID)) {
- /* flush the branch target cache */
- asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero) : "cc");
- dsb();
- isb();
- }
-}
-
-/*
- * flush_pmd_entry
- *
- * Flush a PMD entry (word aligned, or double-word aligned) to
- * RAM if the TLB for the CPU we are running on requires this.
- * This is typically used when we are creating PMD entries.
- *
- * clean_pmd_entry
- *
- * Clean (but don't drain the write buffer) if the CPU requires
- * these operations. This is typically used when we are removing
- * PMD entries.
- */
-static inline void flush_pmd_entry(pmd_t *pmd)
-{
- const unsigned int __tlb_flag = __cpu_tlb_flags;
-
- if (tlb_flag(TLB_DCLEAN))
- asm("mcr p15, 0, %0, c7, c10, 1 @ flush_pmd"
- : : "r" (pmd) : "cc");
-
- if (tlb_flag(TLB_L2CLEAN_FR))
- asm("mcr p15, 1, %0, c15, c9, 1 @ L2 flush_pmd"
- : : "r" (pmd) : "cc");
-
- if (tlb_flag(TLB_WB))
- dsb();
-}
-
-static inline void clean_pmd_entry(pmd_t *pmd)
-{
- const unsigned int __tlb_flag = __cpu_tlb_flags;
-
- if (tlb_flag(TLB_DCLEAN))
- asm("mcr p15, 0, %0, c7, c10, 1 @ flush_pmd"
- : : "r" (pmd) : "cc");
-
- if (tlb_flag(TLB_L2CLEAN_FR))
- asm("mcr p15, 1, %0, c15, c9, 1 @ L2 flush_pmd"
- : : "r" (pmd) : "cc");
-}
-
-#undef tlb_flag
-#undef always_tlb_flags
-#undef possible_tlb_flags
-
-/*
- * Convert calls to our calling convention.
- */
-#define local_flush_tlb_range(vma,start,end) __cpu_flush_user_tlb_range(start,end,vma)
-#define local_flush_tlb_kernel_range(s,e) __cpu_flush_kern_tlb_range(s,e)
-
-#ifndef CONFIG_SMP
-#define flush_tlb_all local_flush_tlb_all
-#define flush_tlb_mm local_flush_tlb_mm
-#define flush_tlb_page local_flush_tlb_page
-#define flush_tlb_kernel_page local_flush_tlb_kernel_page
-#define flush_tlb_range local_flush_tlb_range
-#define flush_tlb_kernel_range local_flush_tlb_kernel_range
-#else
-extern void flush_tlb_all(void);
-extern void flush_tlb_mm(struct mm_struct *mm);
-extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr);
-extern void flush_tlb_kernel_page(unsigned long kaddr);
-extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);
-extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
-#endif
-
-/*
- * if PG_dcache_dirty is set for the page, we need to ensure that any
- * cache entries for the kernels virtual memory range are written
- * back to the page.
- */
-extern void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr, pte_t pte);
-
-#endif
-
-#endif /* CONFIG_MMU */
-
-#endif