usb:gadget: USB Mass Storage Gadget support

This patch adds the USB Mass Storage Gadget to u-boot
New command called "ums" is implemented to provide access
to on-device embedded persistent memory.

USB Mass Storage is supposed to work on top of the USB
Gadget framework

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Marek Vasut <marek.vasut@gmail.com>

1 files changed, 55 insertions, 0 deletions

diff --git a/include/usb_mass_storage.h b/include/usb_mass_storage.h
new file mode 100644
index 0000000..ffc3a13
--- /dev/null
+++ b/include/usb_mass_storage.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2011 Samsung Electrnoics
+ * Lukasz Majewski <l.majewski@samsung.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
+ * aloong with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __USB_MASS_STORAGE_H__
+#define __USB_MASS_STORAGE_H__
+
+#define SECTOR_SIZE		0x200
+
+#include <mmc.h>
+
+struct ums_device {
+	struct mmc *mmc;
+	int dev_num;
+	int offset;
+	int part_size;
+};
+
+struct ums_board_info {
+	int (*read_sector)(struct ums_device *ums_dev,
+			   ulong start, lbaint_t blkcnt, void *buf);
+	int (*write_sector)(struct ums_device *ums_dev,
+			    ulong start, lbaint_t blkcnt, const void *buf);
+	void (*get_capacity)(struct ums_device *ums_dev,
+			     long long int *capacity);
+	const char *name;
+	struct ums_device ums_dev;
+};
+
+extern void board_usb_init(void);
+
+extern int fsg_init(struct ums_board_info *);
+extern void fsg_cleanup(void);
+extern struct ums_board_info *board_ums_init(unsigned int,
+					     unsigned int, unsigned int);
+extern int usb_gadget_handle_interrupts(void);
+extern int fsg_main_thread(void *);
+
+#endif /* __USB_MASS_STORAGE_H__ */