sh: wire up clear_user_highpage() for sh4, convert sh7705.

This wires up clear_user_highpage() on SH-4 and subsequently converts the
SH7705 32kB cache mode over to using it. Now that the SH-4 implementation
handles all of the dcache purging directly in the aliasing case, there is
no need to do this in the default clear_page() implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 0 insertions, 102 deletions

diff --git a/arch/sh/mm/pg-sh7705.c b/arch/sh/mm/pg-sh7705.c
deleted file mode 100644
index 684891b5c8c0..000000000000
--- a/arch/sh/mm/pg-sh7705.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * arch/sh/mm/pg-sh7705.c
- *
- * Copyright (C) 1999, 2000  Niibe Yutaka
- * Copyright (C) 2004  Alex Song
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- */
-
-#include <linux/init.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/threads.h>
-#include <linux/fs.h>
-#include <asm/addrspace.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/processor.h>
-#include <asm/cache.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/pgalloc.h>
-#include <asm/mmu_context.h>
-#include <asm/cacheflush.h>
-
-static void __flush_purge_virtual_region(void *p1, void *virt, int size)
-{
-	unsigned long v;
-	unsigned long begin, end;
-	unsigned long p1_begin;
-
-
-	begin = L1_CACHE_ALIGN((unsigned long)virt);
-	end = L1_CACHE_ALIGN((unsigned long)virt + size);
-
-	p1_begin = (unsigned long)p1 & ~(L1_CACHE_BYTES - 1);
-
-	/* do this the slow way as we may not have TLB entries
-	 * for virt yet. */
-	for (v = begin; v < end; v += L1_CACHE_BYTES) {
-		unsigned long p;
-	        unsigned long ways, addr;
-
-		p = __pa(p1_begin);
-
-	        ways = current_cpu_data.dcache.ways;
-		addr = CACHE_OC_ADDRESS_ARRAY;
-
-		do {
-			unsigned long data;
-
-			addr |= (v & current_cpu_data.dcache.entry_mask);
-
-			data = ctrl_inl(addr);
-			if ((data & CACHE_PHYSADDR_MASK) ==
-			       (p & CACHE_PHYSADDR_MASK)) {
-				data &= ~(SH_CACHE_UPDATED|SH_CACHE_VALID);
-				ctrl_outl(data, addr);
-			}
-
-			addr += current_cpu_data.dcache.way_incr;
-		} while (--ways);
-
-		p1_begin += L1_CACHE_BYTES;
-	}
-}
-
-/*
- * clear_user_page
- * @to: P1 address
- * @address: U0 address to be mapped
- */
-void clear_user_page(void *to, unsigned long address, struct page *pg)
-{
-	if (pages_do_alias(address, (unsigned long)to))
-		__flush_purge_virtual_region(to,
-					     (void *)(address & 0xfffff000),
-					     PAGE_SIZE);
-
-	clear_page(to);
-	__flush_wback_region(to, PAGE_SIZE);
-}
-
-/*
- * copy_user_page
- * @to: P1 address
- * @from: P1 address
- * @address: U0 address to be mapped
- */
-void copy_user_page(void *to, void *from, unsigned long address, struct page *pg)
-{
-	if (pages_do_alias(address, (unsigned long)to))
-		__flush_purge_virtual_region(to,
-					     (void *)(address & 0xfffff000),
-					     PAGE_SIZE);
-
-	copy_page(to, from);
-	__flush_wback_region(to, PAGE_SIZE);
-}