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-rw-r--r--include/asm-arm/arch-imx/memory.h38
1 files changed, 38 insertions, 0 deletions
diff --git a/include/asm-arm/arch-imx/memory.h b/include/asm-arm/arch-imx/memory.h
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+++ b/include/asm-arm/arch-imx/memory.h
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+/*
+ * linux/include/asm-arm/arch-imx/memory.h
+ *
+ * Copyright (C) 1999 ARM Limited
+ * Copyright (C) 2002 Shane Nay (shane@minirl.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.
+ *
+ * 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_ARCH_MMU_H
+#define __ASM_ARCH_MMU_H
+
+#define PHYS_OFFSET (0x08000000UL)
+
+/*
+ * Virtual view <-> DMA view memory address translations
+ * virt_to_bus: Used to translate the virtual address to an
+ * address suitable to be passed to set_dma_addr
+ * bus_to_virt: Used to convert an address for DMA operations
+ * to an address that the kernel can use.
+ */
+#define __virt_to_bus__is_a_macro
+#define __virt_to_bus(x) (x - PAGE_OFFSET + PHYS_OFFSET)
+#define __bus_to_virt__is_a_macro
+#define __bus_to_virt(x) (x - PHYS_OFFSET + PAGE_OFFSET)
+
+#endif