mn10300: Remove the architecture

[linux-2.6-block.git] / arch / mn10300 / mm / cache-inv-icache.c

diff --git a/arch/mn10300/mm/cache-inv-icache.c b/arch/mn10300/mm/cache-inv-icache.c
deleted file mode 100644 (file)
index a6b63dd..0000000
--- a/arch/mn10300/mm/cache-inv-icache.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/* Invalidate icache when dcache doesn't need invalidation as it's in
- * write-through 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_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.
- *
- * Invalidate the icache for part of a single page, as determined by the
- * virtual addresses given.  The page must be in the paged area.  The dcache is
- * not flushed as the cache must be in write-through mode to get here.
- */
-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);
-
-       /* invalidate the icache coverage on that region */
-       mn10300_local_icache_inv_range2(addr + off, size);
-       smp_cache_call(SMP_ICACHE_INV_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_icache_inv_range(start_page, end);
-               smp_cache_call(SMP_ICACHE_INV_RANGE, start, 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_local_icache_inv();
-               smp_cache_call(SMP_ICACHE_INV, 0, 0);
-       }
-
-done:
-       smp_unlock_cache(flags);
-}
-EXPORT_SYMBOL(flush_icache_range);