Merge branch 'master' into tk71

[mv-sheeva.git] / arch / mn10300 / mm / cache-smp-inv.c

diff --git a/arch/mn10300/mm/cache-smp-inv.c b/arch/mn10300/mm/cache-smp-inv.c
new file mode 100644 (file)
index 0000000..ff17873
--- /dev/null
+++ b/arch/mn10300/mm/cache-smp-inv.c
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+/* Functions for global i/dcache invalidation when caching in SMP
+ *
+ * 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/mm.h>
+#include <asm/cacheflush.h>
+#include "cache-smp.h"
+
+/**
+ * mn10300_icache_inv - Globally invalidate instruction cache
+ *
+ * Invalidate the instruction cache on all CPUs.
+ */
+void mn10300_icache_inv(void)
+{
+       unsigned long flags;
+
+       flags = smp_lock_cache();
+       mn10300_local_icache_inv();
+       smp_cache_call(SMP_ICACHE_INV, 0, 0);
+       smp_unlock_cache(flags);
+}
+
+/**
+ * mn10300_icache_inv_page - Globally invalidate a page of instruction cache
+ * @start: The address of the page of memory to be invalidated.
+ *
+ * Invalidate a range of addresses in the instruction cache on all CPUs
+ * covering the page that includes the given address.
+ */
+void mn10300_icache_inv_page(unsigned long start)
+{
+       unsigned long flags;
+
+       start &= ~(PAGE_SIZE-1);
+
+       flags = smp_lock_cache();
+       mn10300_local_icache_inv_page(start);
+       smp_cache_call(SMP_ICACHE_INV_RANGE, start, start + PAGE_SIZE);
+       smp_unlock_cache(flags);
+}
+
+/**
+ * mn10300_icache_inv_range - Globally invalidate range of instruction cache
+ * @start: The start address of the region to be invalidated.
+ * @end: The end address of the region to be invalidated.
+ *
+ * Invalidate a range of addresses in the instruction cache on all CPUs,
+ * between start and end-1 inclusive.
+ */
+void mn10300_icache_inv_range(unsigned long start, unsigned long end)
+{
+       unsigned long flags;
+
+       flags = smp_lock_cache();
+       mn10300_local_icache_inv_range(start, end);
+       smp_cache_call(SMP_ICACHE_INV_RANGE, start, end);
+       smp_unlock_cache(flags);
+}
+
+/**
+ * mn10300_icache_inv_range2 - Globally invalidate range of instruction cache
+ * @start: The start address of the region to be invalidated.
+ * @size: The size of the region to be invalidated.
+ *
+ * Invalidate a range of addresses in the instruction cache on all CPUs,
+ * between start and start+size-1 inclusive.
+ */
+void mn10300_icache_inv_range2(unsigned long start, unsigned long size)
+{
+       unsigned long flags;
+
+       flags = smp_lock_cache();
+       mn10300_local_icache_inv_range2(start, size);
+       smp_cache_call(SMP_ICACHE_INV_RANGE, start, start + size);
+       smp_unlock_cache(flags);
+}
+
+/**
+ * mn10300_dcache_inv - Globally invalidate data cache
+ *
+ * Invalidate the data cache on all CPUs.
+ */
+void mn10300_dcache_inv(void)
+{
+       unsigned long flags;
+
+       flags = smp_lock_cache();
+       mn10300_local_dcache_inv();
+       smp_cache_call(SMP_DCACHE_INV, 0, 0);
+       smp_unlock_cache(flags);
+}
+
+/**
+ * mn10300_dcache_inv_page - Globally invalidate a page of data cache
+ * @start: The address of the page of memory to be invalidated.
+ *
+ * Invalidate a range of addresses in the data cache on all CPUs covering the
+ * page that includes the given address.
+ */
+void mn10300_dcache_inv_page(unsigned long start)
+{
+       unsigned long flags;
+
+       start &= ~(PAGE_SIZE-1);
+
+       flags = smp_lock_cache();
+       mn10300_local_dcache_inv_page(start);
+       smp_cache_call(SMP_DCACHE_INV_RANGE, start, start + PAGE_SIZE);
+       smp_unlock_cache(flags);
+}
+
+/**
+ * mn10300_dcache_inv_range - Globally invalidate range of data cache
+ * @start: The start address of the region to be invalidated.
+ * @end: The end address of the region to be invalidated.
+ *
+ * Invalidate a range of addresses in the data cache on all CPUs, between start
+ * and end-1 inclusive.
+ */
+void mn10300_dcache_inv_range(unsigned long start, unsigned long end)
+{
+       unsigned long flags;
+
+       flags = smp_lock_cache();
+       mn10300_local_dcache_inv_range(start, end);
+       smp_cache_call(SMP_DCACHE_INV_RANGE, start, end);
+       smp_unlock_cache(flags);
+}
+
+/**
+ * mn10300_dcache_inv_range2 - Globally invalidate range of data cache
+ * @start: The start address of the region to be invalidated.
+ * @size: The size of the region to be invalidated.
+ *
+ * Invalidate a range of addresses in the data cache on all CPUs, between start
+ * and start+size-1 inclusive.
+ */
+void mn10300_dcache_inv_range2(unsigned long start, unsigned long size)
+{
+       unsigned long flags;
+
+       flags = smp_lock_cache();
+       mn10300_local_dcache_inv_range2(start, size);
+       smp_cache_call(SMP_DCACHE_INV_RANGE, start, start + size);
+       smp_unlock_cache(flags);
+}