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-rw-r--r--arch/mn10300/mm/cache-flush-icache.c155
1 files changed, 0 insertions, 155 deletions
diff --git a/arch/mn10300/mm/cache-flush-icache.c b/arch/mn10300/mm/cache-flush-icache.c
deleted file mode 100644
index fdb1a9db20f0..000000000000
--- a/arch/mn10300/mm/cache-flush-icache.c
+++ /dev/null
@@ -1,155 +0,0 @@
-/* Flush dcache and invalidate icache when the dcache is in writeback mode
- *
- * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <asm/cacheflush.h>
-#include <asm/smp.h>
-#include "cache-smp.h"
-
-/**
- * flush_icache_page - Flush a page from the dcache and invalidate the icache
- * @vma: The VMA the page is part of.
- * @page: The page to be flushed.
- *
- * Write a page back from the dcache and invalidate the icache so that we can
- * run code from it that we've just written into it
- */
-void flush_icache_page(struct vm_area_struct *vma, struct page *page)
-{
- unsigned long start = page_to_phys(page);
- unsigned long flags;
-
- flags = smp_lock_cache();
-
- mn10300_local_dcache_flush_page(start);
- mn10300_local_icache_inv_page(start);
-
- smp_cache_call(SMP_IDCACHE_INV_FLUSH_RANGE, start, start + PAGE_SIZE);
- smp_unlock_cache(flags);
-}
-EXPORT_SYMBOL(flush_icache_page);
-
-/**
- * flush_icache_page_range - Flush dcache and invalidate icache for part of a
- * single page
- * @start: The starting virtual address of the page part.
- * @end: The ending virtual address of the page part.
- *
- * Flush the dcache and invalidate the icache for part of a single page, as
- * determined by the virtual addresses given. The page must be in the paged
- * area.
- */
-static void flush_icache_page_range(unsigned long start, unsigned long end)
-{
- unsigned long addr, size, off;
- struct page *page;
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *ppte, pte;
-
- /* work out how much of the page to flush */
- off = start & ~PAGE_MASK;
- size = end - start;
-
- /* get the physical address the page is mapped to from the page
- * tables */
- pgd = pgd_offset(current->mm, start);
- if (!pgd || !pgd_val(*pgd))
- return;
-
- pud = pud_offset(pgd, start);
- if (!pud || !pud_val(*pud))
- return;
-
- pmd = pmd_offset(pud, start);
- if (!pmd || !pmd_val(*pmd))
- return;
-
- ppte = pte_offset_map(pmd, start);
- if (!ppte)
- return;
- pte = *ppte;
- pte_unmap(ppte);
-
- if (pte_none(pte))
- return;
-
- page = pte_page(pte);
- if (!page)
- return;
-
- addr = page_to_phys(page);
-
- /* flush the dcache and invalidate the icache coverage on that
- * region */
- mn10300_local_dcache_flush_range2(addr + off, size);
- mn10300_local_icache_inv_range2(addr + off, size);
- smp_cache_call(SMP_IDCACHE_INV_FLUSH_RANGE, start, end);
-}
-
-/**
- * flush_icache_range - Globally flush dcache and invalidate icache for region
- * @start: The starting virtual address of the region.
- * @end: The ending virtual address of the region.
- *
- * This is used by the kernel to globally flush some code it has just written
- * from the dcache back to RAM and then to globally invalidate the icache over
- * that region so that that code can be run on all CPUs in the system.
- */
-void flush_icache_range(unsigned long start, unsigned long end)
-{
- unsigned long start_page, end_page;
- unsigned long flags;
-
- flags = smp_lock_cache();
-
- if (end > 0x80000000UL) {
- /* addresses above 0xa0000000 do not go through the cache */
- if (end > 0xa0000000UL) {
- end = 0xa0000000UL;
- if (start >= end)
- goto done;
- }
-
- /* kernel addresses between 0x80000000 and 0x9fffffff do not
- * require page tables, so we just map such addresses
- * directly */
- start_page = (start >= 0x80000000UL) ? start : 0x80000000UL;
- mn10300_local_dcache_flush_range(start_page, end);
- mn10300_local_icache_inv_range(start_page, end);
- smp_cache_call(SMP_IDCACHE_INV_FLUSH_RANGE, start_page, end);
- if (start_page == start)
- goto done;
- end = start_page;
- }
-
- start_page = start & PAGE_MASK;
- end_page = (end - 1) & PAGE_MASK;
-
- if (start_page == end_page) {
- /* the first and last bytes are on the same page */
- flush_icache_page_range(start, end);
- } else if (start_page + 1 == end_page) {
- /* split over two virtually contiguous pages */
- flush_icache_page_range(start, end_page);
- flush_icache_page_range(end_page, end);
- } else {
- /* more than 2 pages; just flush the entire cache */
- mn10300_dcache_flush();
- mn10300_icache_inv();
- smp_cache_call(SMP_IDCACHE_INV_FLUSH, 0, 0);
- }
-
-done:
- smp_unlock_cache(flags);
-}
-EXPORT_SYMBOL(flush_icache_range);