Added API for accessing iomem. We'll probably need barriers for that

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

1 files changed, 94 insertions, 0 deletions

diff --git a/include/reg_api.h b/include/reg_api.h
new file mode 100644
index 0000000..c650533
--- /dev/null
+++ b/include/reg_api.h
@@ -0,0 +1,94 @@
+#ifndef _REG_API_H
+#define _REG_API_H
+#include <stdio.h>
+#include <stdint.h>
+
+static inline uint8_t io_read8_relaxed(const volatile void *addr)
+{
+	return *(const volatile uint8_t *)addr;
+}
+
+static inline uint16_t io_read16_relaxed(const volatile void *addr)
+{
+	return *(const volatile uint16_t *)addr;
+}
+
+static inline uint32_t io_read32_relaxed(const volatile void *addr)
+{
+	return *(const volatile uint32_t *)addr;
+}
+
+static inline uint64_t io_read64_relaxed(const volatile void *addr)
+{
+	return *(const volatile uint64_t *)addr;
+}
+
+static inline void io_write8_relaxed(uint8_t value, volatile void *addr)
+{
+	*(volatile uint8_t *)addr = value;
+}
+
+static inline void io_write16_relaxed(uint16_t value, volatile void *addr)
+{
+	*(volatile uint16_t *)addr = value;
+}
+
+static inline void io_write32_relaxed(uint32_t value, volatile void *addr)
+{
+	*(volatile uint32_t *)addr = value;
+}
+
+static inline void io_write64_relaxed(uint64_t value, volatile void *addr)
+{
+	*(volatile uint64_t *)addr = value;
+}
+
+static inline uint8_t io_read8(const volatile void *addr)
+{
+	uint8_t val;
+	val = io_read8_relaxed(addr);
+	return val;
+}
+
+static inline uint16_t io_read16(const volatile void *addr)
+{
+	uint16_t val;
+	val = io_read16_relaxed(addr);
+	return val;
+}
+
+static inline uint32_t io_read32(const volatile void *addr)
+{
+	uint32_t val;
+	val = io_read32_relaxed(addr);
+	return val;
+}
+
+static inline uint64_t io_read64(const volatile void *addr)
+{
+	uint64_t val;
+	val = io_read64_relaxed(addr);
+	return val;
+}
+
+static inline void io_write8(uint8_t value, volatile void *addr)
+{
+	io_write8_relaxed(value, addr);
+}
+
+static inline void io_write16(uint16_t value, volatile void *addr)
+{
+	io_write16_relaxed(value, addr);
+}
+
+static inline void io_write32(uint32_t value, volatile void *addr)
+{
+	io_write32_relaxed(value, addr);
+}
+
+static inline void io_write64(uint64_t value, volatile void *addr)
+{
+	io_write64_relaxed(value, addr);
+}
+
+#endif