1 files changed, 84 insertions, 0 deletions
diff --git a/core/include/io.h b/core/include/io.h
new file mode 100644
index 0000000..510bf33
--- /dev/null
+++ b/core/include/io.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2014, Linaro Limited
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef IO_H
+#define IO_H
+
+#include <stdint.h>
+#include <types_ext.h>
+
+/*
+ * IO access macro, please avoid using this macro, since it's going to be
+ * deprecated.
+ */
+#define  IO(addr)  (*((volatile unsigned long *)(addr)))
+
+static inline void write8(uint8_t val, vaddr_t addr)
+{
+	*(volatile uint8_t *)addr = val;
+}
+
+static inline void write16(uint16_t val, vaddr_t addr)
+{
+	*(volatile uint16_t *)addr = val;
+}
+
+static inline void write32(uint32_t val, vaddr_t addr)
+{
+	*(volatile uint32_t *)addr = val;
+}
+
+static inline uint8_t read8(vaddr_t addr)
+{
+	return *(volatile uint8_t *)addr;
+}
+
+static inline uint16_t read16(vaddr_t addr)
+{
+	return *(volatile uint16_t *)addr;
+}
+
+static inline uint32_t read32(vaddr_t addr)
+{
+	return *(volatile uint32_t *)addr;
+}
+
+static inline void io_mask8(vaddr_t addr, uint8_t val, uint8_t mask)
+{
+	write8((read8(addr) & ~mask) | (val & mask), addr);
+}
+
+static inline void io_mask16(vaddr_t addr, uint16_t val, uint16_t mask)
+{
+	write16((read16(addr) & ~mask) | (val & mask), addr);
+}
+
+static inline void io_mask32(vaddr_t addr, uint32_t val, uint32_t mask)
+{
+	write32((read32(addr) & ~mask) | (val & mask), addr);
+}
+
+#endif /*IO_H*/