powerpc: Remove arch/ppc and include/asm-ppc

[sfrench/cifs-2.6.git] / arch / ppc / mm / tlb.c

diff --git a/arch/ppc/mm/tlb.c b/arch/ppc/mm/tlb.c
deleted file mode 100644 (file)
index 4ff260b..0000000
--- a/arch/ppc/mm/tlb.c
+++ /dev/null
@@ -1,183 +0,0 @@
-/*
- * This file contains the routines for TLB flushing.
- * On machines where the MMU uses a hash table to store virtual to
- * physical translations, these routines flush entries from the
- * hash table also.
- *  -- paulus
- *
- *  Derived from arch/ppc/mm/init.c:
- *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- *  Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au)
- *  and Cort Dougan (PReP) (cort@cs.nmt.edu)
- *    Copyright (C) 1996 Paul Mackerras
- *  Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk).
- *
- *  Derived from "arch/i386/mm/init.c"
- *    Copyright (C) 1991, 1992, 1993, 1994  Linus Torvalds
- *
- *  This program is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU General Public License
- *  as published by the Free Software Foundation; either version
- *  2 of the License, or (at your option) any later version.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/highmem.h>
-#include <linux/pagemap.h>
-#include <asm/tlbflush.h>
-#include <asm/tlb.h>
-
-#include "mmu_decl.h"
-
-/*
- * Called when unmapping pages to flush entries from the TLB/hash table.
- */
-void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, unsigned long addr)
-{
-       unsigned long ptephys;
-
-       if (Hash != 0) {
-               ptephys = __pa(ptep) & PAGE_MASK;
-               flush_hash_pages(mm->context.id, addr, ptephys, 1);
-       }
-}
-
-/*
- * Called by ptep_set_access_flags, must flush on CPUs for which the
- * DSI handler can't just "fixup" the TLB on a write fault
- */
-void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr)
-{
-       if (Hash != 0)
-               return;
-       _tlbie(addr);
-}
-
-/*
- * Called at the end of a mmu_gather operation to make sure the
- * TLB flush is completely done.
- */
-void tlb_flush(struct mmu_gather *tlb)
-{
-       if (Hash == 0) {
-               /*
-                * 603 needs to flush the whole TLB here since
-                * it doesn't use a hash table.
-                */
-               _tlbia();
-       }
-}
-
-/*
- * TLB flushing:
- *
- *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
- *  - flush_tlb_page(vma, vmaddr) flushes one page
- *  - flush_tlb_range(vma, start, end) flushes a range of pages
- *  - flush_tlb_kernel_range(start, end) flushes kernel pages
- *
- * since the hardware hash table functions as an extension of the
- * tlb as far as the linux tables are concerned, flush it too.
- *    -- Cort
- */
-
-/*
- * 750 SMP is a Bad Idea because the 750 doesn't broadcast all
- * the cache operations on the bus.  Hence we need to use an IPI
- * to get the other CPU(s) to invalidate their TLBs.
- */
-#ifdef CONFIG_SMP_750
-#define FINISH_FLUSH   smp_send_tlb_invalidate(0)
-#else
-#define FINISH_FLUSH   do { } while (0)
-#endif
-
-static void flush_range(struct mm_struct *mm, unsigned long start,
-                       unsigned long end)
-{
-       pmd_t *pmd;
-       unsigned long pmd_end;
-       int count;
-       unsigned int ctx = mm->context.id;
-
-       if (Hash == 0) {
-               _tlbia();
-               return;
-       }
-       start &= PAGE_MASK;
-       if (start >= end)
-               return;
-       end = (end - 1) | ~PAGE_MASK;
-       pmd = pmd_offset(pgd_offset(mm, start), start);
-       for (;;) {
-               pmd_end = ((start + PGDIR_SIZE) & PGDIR_MASK) - 1;
-               if (pmd_end > end)
-                       pmd_end = end;
-               if (!pmd_none(*pmd)) {
-                       count = ((pmd_end - start) >> PAGE_SHIFT) + 1;
-                       flush_hash_pages(ctx, start, pmd_val(*pmd), count);
-               }
-               if (pmd_end == end)
-                       break;
-               start = pmd_end + 1;
-               ++pmd;
-       }
-}
-
-/*
- * Flush kernel TLB entries in the given range
- */
-void flush_tlb_kernel_range(unsigned long start, unsigned long end)
-{
-       flush_range(&init_mm, start, end);
-       FINISH_FLUSH;
-}
-
-/*
- * Flush all the (user) entries for the address space described by mm.
- */
-void flush_tlb_mm(struct mm_struct *mm)
-{
-       struct vm_area_struct *mp;
-
-       if (Hash == 0) {
-               _tlbia();
-               return;
-       }
-
-       for (mp = mm->mmap; mp != NULL; mp = mp->vm_next)
-               flush_range(mp->vm_mm, mp->vm_start, mp->vm_end);
-       FINISH_FLUSH;
-}
-
-void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr)
-{
-       struct mm_struct *mm;
-       pmd_t *pmd;
-
-       if (Hash == 0) {
-               _tlbie(vmaddr);
-               return;
-       }
-       mm = (vmaddr < TASK_SIZE)? vma->vm_mm: &init_mm;
-       pmd = pmd_offset(pgd_offset(mm, vmaddr), vmaddr);
-       if (!pmd_none(*pmd))
-               flush_hash_pages(mm->context.id, vmaddr, pmd_val(*pmd), 1);
-       FINISH_FLUSH;
-}
-
-/*
- * For each address in the range, find the pte for the address
- * and check _PAGE_HASHPTE bit; if it is set, find and destroy
- * the corresponding HPTE.
- */
-void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
-                    unsigned long end)
-{
-       flush_range(vma->vm_mm, start, end);
-       FINISH_FLUSH;
-}