1 files changed, 66 insertions, 0 deletions

diff --git a/arch/frv/mm/cache-page.c b/arch/frv/mm/cache-page.c
new file mode 100644
index 000000000000..683b5e344318
--- /dev/null
+++ b/arch/frv/mm/cache-page.c
@@ -0,0 +1,66 @@
+/* cache-page.c: whole-page cache wrangling functions for MMU linux
+ *
+ * Copyright (C) 2004 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 License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/highmem.h>
+#include <asm/pgalloc.h>
+
+/*****************************************************************************/
+/*
+ * DCF takes a virtual address and the page may not currently have one
+ * - temporarily hijack a kmap_atomic() slot and attach the page to it
+ */
+void flush_dcache_page(struct page *page)
+{
+        unsigned long dampr2;
+        void *vaddr;
+
+        dampr2 = __get_DAMPR(2);
+
+        vaddr = kmap_atomic(page, __KM_CACHE);
+
+        frv_dcache_writeback((unsigned long) vaddr, (unsigned long) vaddr + PAGE_SIZE);
+
+        kunmap_atomic(vaddr, __KM_CACHE);
+
+        if (dampr2) {
+                __set_DAMPR(2, dampr2);
+                __set_IAMPR(2, dampr2);
+        }
+
+} /* end flush_dcache_page() */
+
+/*****************************************************************************/
+/*
+ * ICI takes a virtual address and the page may not currently have one
+ * - so we temporarily attach the page to a bit of virtual space so that is can be flushed
+ */
+void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
+                             unsigned long start, unsigned long len)
+{
+        unsigned long dampr2;
+        void *vaddr;
+
+        dampr2 = __get_DAMPR(2);
+
+        vaddr = kmap_atomic(page, __KM_CACHE);
+
+        start = (start & ~PAGE_MASK) | (unsigned long) vaddr;
+        frv_cache_wback_inv(start, start + len);
+
+        kunmap_atomic(vaddr, __KM_CACHE);
+
+        if (dampr2) {
+                __set_DAMPR(2, dampr2);
+                __set_IAMPR(2, dampr2);
+        }
+
+} /* end flush_icache_user_range() */