[coldfire]: 2.6.31 support (WiP)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24087 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 58 insertions, 0 deletions

diff --git a/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_virtconvert.h b/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_virtconvert.h
new file mode 100644
index 0000000000..ed95887da2
--- /dev/null
+++ b/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_virtconvert.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2007-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+#ifndef __CF_VIRTCONVERT__
+#define __CF_VIRTCONVERT__
+
+/*
+ * Macros used for converting between virtual and physical mappings.
+ *
+ * Coldfire Specific
+ */
+
+#ifdef __KERNEL__
+
+#include <linux/compiler.h>
+#include <linux/mmzone.h>
+#include <asm/setup.h>
+#include <asm/page.h>
+
+/*
+ * Change virtual addresses to physical addresses and vv.
+ */
+static inline unsigned long virt_to_phys(void *address)
+{
+	return __pa(address);
+}
+
+static inline void *phys_to_virt(unsigned long address)
+{
+	return __va(address);
+}
+
+/* Permanent address of a page. */
+#ifdef CONFIG_SINGLE_MEMORY_CHUNK
+#define page_to_phys(page) \
+	__pa(PAGE_OFFSET + (((page) - pg_data_map[0].node_mem_map) << PAGE_SHIFT))
+#else
+#define page_to_phys(_page) ({						\
+	struct page *__page = _page;					\
+	struct pglist_data *pgdat;					\
+	pgdat = pg_data_table[page_to_nid(__page)];			\
+	page_to_pfn(__page) << PAGE_SHIFT;				\
+})
+#endif
+
+/*
+ * IO bus memory addresses are 1:1 with the physical address,
+ */
+#ifdef CONFIG_PCI
+#define virt_to_bus(a) (a + PCI_DMA_BASE)
+#define bus_to_virt(a) (a - PCI_DMA_BASE)
+#else
+#define virt_to_bus(a) (a)
+#define bus_to_virt(a) (a)
+#endif
+
+#endif	/* __KERNEL__ */
+#endif	/* __CF_VIRTCONVERT__ */