usb-core: Add register accessor functions

Endian conversion routines

Signed-off-by: Avik Sil <aviksil@linux.vnet.ibm.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Acked-by: Thomas Huth <thuth@linux.vnet.ibm.com>

2 files changed, 83 insertions, 0 deletions

diff --git a/lib/libusb/tools.h b/lib/libusb/tools.h
new file mode 100644
index 0000000..e08ce15
--- /dev/null
+++ b/lib/libusb/tools.h
@@ -0,0 +1,82 @@
+/*****************************************************************************
+ * Copyright (c) 2013 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ *     IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#ifndef __TOOLS_H
+#define __TOOLS_H
+
+#include <stdint.h>
+#include <byteorder.h>
+#include <cache.h>
+
+#define PTR_U32(x)  ((uint32_t) (uint64_t) (x))
+
+static inline uint32_t read_reg(uint32_t *reg)
+{
+	return bswap_32(*reg);
+}
+
+static inline void write_reg(uint32_t *reg, uint32_t value)
+{
+	*reg =  bswap_32(value);
+}
+
+static inline uint8_t read_reg8(uint8_t *reg)
+{
+	return *reg;
+}
+
+static inline void write_reg8(uint8_t *reg, uint8_t value)
+{
+	*reg = value;
+}
+
+static inline uint16_t read_reg16(uint16_t *reg)
+{
+	return bswap_16(*reg);
+}
+
+static inline void write_reg16(uint16_t *reg, uint16_t value)
+{
+	*reg =  bswap_16(value);
+}
+
+static inline uint32_t read_reg32(uint32_t *reg)
+{
+	return read_reg(reg);
+}
+
+static inline void write_reg32(uint32_t *reg, uint32_t value)
+{
+	write_reg(reg, value);
+}
+
+static inline uint64_t read_reg64(uint64_t *reg)
+{
+	return bswap_64(*reg);
+}
+
+static inline void write_reg64(uint64_t *reg, uint64_t value)
+{
+	*reg = bswap_64(value);
+}
+
+static inline uint32_t ci_read_reg(uint32_t *reg)
+{
+	return bswap_32(ci_read_32(reg));
+}
+
+static inline void ci_write_reg(uint32_t *reg, uint32_t value)
+{
+	ci_write_32(reg, bswap_32(value));
+}
+
+#endif
diff --git a/lib/libusb/usb-core.h b/lib/libusb/usb-core.h
index 1a4e3ec..74bd49e 100644
--- a/lib/libusb/usb-core.h
+++ b/lib/libusb/usb-core.h
@@ -15,6 +15,7 @@
 
 #include <stdio.h>
 #include "usb.h"
+#include "tools.h"
 
 enum usb_hcd_type {
 	USB_OHCI = 1,