From: Lukasz Majewski l.majew...@samsung.com
The storage_common.c source file from v2.6.36 Linux kernel.
commit d26a6aa08b9f12b44fb1ee65625e7480d3d5bb81
Author: Michal Nazarewicz m.nazarew...@samsung.com
Date: Mon Nov 9 14:15:23 2009 +0100
USB: g_mass_storage: code cleaned up and comments updated
Signed-off-by: Lukasz Majewski l.majew...@samsung.com
Signed-off-by: Andrzej Pietrasiewicz andrze...@samsung.com
Signed-off-by: Kyungmin Park kyungmin.p...@samsung.com
---
drivers/usb/gadget/storage_common.c | 654 +++
1 file changed, 654 insertions(+)
create mode 100644 drivers/usb/gadget/storage_common.c
diff --git a/drivers/usb/gadget/storage_common.c
b/drivers/usb/gadget/storage_common.c
new file mode 100644
index 000..1dbc4b5
--- /dev/null
+++ b/drivers/usb/gadget/storage_common.c
@@ -0,0 +1,654 @@
+/*
+ * storage_common.c -- Common definitions for mass storage functionality
+ *
+ * Copyright (C) 2003-2008 Alan Stern
+ * Copyeight (C) 2009 Samsung Electronics
+ * Author: Michal Nazarewicz (m.nazarew...@samsung.com)
+ *
+ * Ported to u-boot:
+ * Andrzej Pietrasiewicz andrze...@samsung.com
+ *
+ * Code refactoring cleanup:
+ * ??ukasz Majewski l.majew...@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
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+/*
+ * This file requires the following identifiers used in USB strings to
+ * be defined (each of type pointer to char):
+ * - fsg_string_manufacturer -- name of the manufacturer
+ * - fsg_string_product -- name of the product
+ * - fsg_string_serial -- product's serial
+ * - fsg_string_config -- name of the configuration
+ * - fsg_string_interface-- name of the interface
+ * The first four are only needed when FSG_DESCRIPTORS_DEVICE_STRINGS
+ * macro is defined prior to including this file.
+ */
+
+/*
+ * When FSG_NO_INTR_EP is defined fsg_fs_intr_in_desc and
+ * fsg_hs_intr_in_desc objects as well as
+ * FSG_FS_FUNCTION_PRE_EP_ENTRIES and FSG_HS_FUNCTION_PRE_EP_ENTRIES
+ * macros are not defined.
+ *
+ * When FSG_NO_DEVICE_STRINGS is defined FSG_STRING_MANUFACTURER,
+ * FSG_STRING_PRODUCT, FSG_STRING_SERIAL and FSG_STRING_CONFIG are not
+ * defined (as well as corresponding entries in string tables are
+ * missing) and FSG_STRING_INTERFACE has value of zero.
+ *
+ * When FSG_NO_OTG is defined fsg_otg_desc won't be defined.
+ */
+
+/*
+ * When FSG_BUFFHD_STATIC_BUFFER is defined when this file is included
+ * the fsg_buffhd structure's buf field will be an array of FSG_BUFLEN
+ * characters rather then a pointer to void.
+ */
+
+
+/* #include asm/unaligned.h */
+
+
+/*
+ * Thanks to NetChip Technologies for donating this product ID.
+ *
+ * DO NOT REUSE THESE IDs with any other driver!! Ever!!
+ * Instead: allocate your own, using normal USB-IF procedures.
+ */
+#define FSG_VENDOR_ID 0x0525 /* NetChip */
+#define FSG_PRODUCT_ID 0xa4a5 /* Linux-USB File-backed Storage Gadget */
+
+/*-*/
+
+#ifndef DEBUG
+#undef VERBOSE_DEBUG
+#undef DUMP_MSGS
+#endif /* !DEBUG */
+
+#ifdef VERBOSE_DEBUG
+#define VLDBG LDBG
+#else
+#define VLDBG(lun, fmt, args...) do { } while (0)
+#endif /* VERBOSE_DEBUG */
+
+/*
+#define LDBG(lun, fmt, args...) dev_dbg ((lun)-dev, fmt, ## args)
+#define LERROR(lun, fmt, args...) dev_err ((lun)-dev, fmt, ## args)
+#define LWARN(lun, fmt, args...) dev_warn((lun)-dev, fmt, ## args)
+#define LINFO(lun, fmt, args...) dev_info((lun)-dev, fmt, ## args)
+*/
+
+#define LDBG(lun, fmt, args...) do { } while (0)
+#define LERROR(lun, fmt, args...) do { } while (0)
+#define LWARN(lun, fmt, args...) do { } while (0)
+#define LINFO(lun, fmt, args...) do { } while (0)
+
+/*
+ * Keep those macros in sync with those in
+ * include/linux/usb/composite.h or else GCC will complain. If they
+ * are identical (the same names of arguments, white spaces in the
+ * same places) GCC will allow redefinition otherwise (even if some
+ * white space is removed or added) warning will be issued.
+ *
+ * Those macros are needed here because File Storage Gadget does not
+ * include the composite.h header. For composite gadgets those macros
+ * are redundant since composite.h is included any way.
+ *
+ * One could check whether those macros are already defined (which
+ * would indicate
