Add AVR32 architecture support

Patch by Haavard Skinnemoen, 6 Sep 2006 16:23:02 +0200

This patch adds common infrastructure code for the Atmel AVR32
architecture. See doc/README.AVR32 for details.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/include/asm-avr32/dma-mapping.h b/include/asm-avr32/dma-mapping.h
new file mode 100644
index 0000000..3b46fa3
--- /dev/null
+++ b/include/asm-avr32/dma-mapping.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#ifndef __ASM_AVR32_DMA_MAPPING_H
+#define __ASM_AVR32_DMA_MAPPING_H
+
+#include <asm/io.h>
+#include <asm/cacheflush.h>
+
+enum dma_data_direction {
+	DMA_BIDIRECTIONAL	= 0,
+	DMA_TO_DEVICE		= 1,
+	DMA_FROM_DEVICE		= 2,
+};
+extern void *dma_alloc_coherent(size_t len, unsigned long *handle);
+
+static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
+					   enum dma_data_direction dir)
+{
+	extern void __bad_dma_data_direction(void);
+
+	switch (dir) {
+	case DMA_BIDIRECTIONAL:
+		dcache_flush_range(vaddr, len);
+		break;
+	case DMA_TO_DEVICE:
+		dcache_clean_range(vaddr, len);
+		break;
+	case DMA_FROM_DEVICE:
+		dcache_invalidate_range(vaddr, len);
+		break;
+	default:
+		/* This will cause a linker error */
+		__bad_dma_data_direction();
+	}
+
+	return virt_to_phys(vaddr);
+}
+
+static inline void dma_unmap_single(volatile void *vaddr, size_t len,
+				    unsigned long paddr)
+{
+
+}
+
+#endif /* __ASM_AVR32_DMA_MAPPING_H */