add MSC (Mass Storage Class) support

include/libopencm3/usb/msc.h

@@ -0,0 +1,93 @@
+/** @defgroup usb_msc_defines USB MSC Type Definitions
+
+@brief <b>Defined Constants and Types for the USB MSC Type Definitions</b>
+
+@ingroup USB_defines
+
+@version 1.0.0
+
+@author @htmlonly &copy; @endhtmlonly 2013
+Weston Schmidt <weston_schmidt@alumni.purdue.edu>
+Pavol Rusnak <stick@gk2.sk>
+
+@date 27 June 2013
+
+LGPL License Terms @ref lgpl_license
+*/
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2013 Weston Schmidt <weston_schmidt@alumni.purdue.edu>
+ * Copyright (C) 2013 Pavol Rusnak <stick@gk2.sk>
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**@{*/
+
+#ifndef __MSC_H
+#define __MSC_H
+
+typedef struct _usbd_mass_storage usbd_mass_storage;
+
+/* Definitions of Mass Storage Class from:
+ *
+ * (A) "Universal Serial Bus Mass Storage Class Bulk-Only Transport
+ *      Revision 1.0"
+ *
+ * (B) "Universal Serial Bus Mass Storage Class Specification Overview
+ *      Revision 1.0"
+ */
+
+/* (A) Table 4.5: Mass Storage Device Class Code */
+#define USB_CLASS_MSC			0x08
+
+/* (B) Table 2.1: Class Subclass Code */
+#define USB_MSC_SUBCLASS_RBC		0x01
+#define USB_MSC_SUBCLASS_ATAPI		0x02
+#define USB_MSC_SUBCLASS_UFI		0x04
+#define USB_MSC_SUBCLASS_SCSI		0x06
+#define USB_MSC_SUBCLASS_LOCKABLE	0x07
+#define USB_MSC_SUBCLASS_IEEE1667	0x08
+
+/* (B) Table 3.1 Mass Storage Interface Class Control Protocol Codes */
+#define USB_MSC_PROTOCOL_CBI		0x00
+#define USB_MSC_PROTOCOL_CBI_ALT	0x01
+#define USB_MSC_PROTOCOL_BBB		0x50
+
+/* (B) Table 4.1 Mass Storage Request Codes */
+#define USB_MSC_REQ_CODES_ADSC		0x00
+#define USB_MSC_REQ_CODES_GET		0xFC
+#define USB_MSC_REQ_CODES_PUT		0xFD
+#define USB_MSC_REQ_CODES_GML		0xFE
+#define USB_MSC_REQ_CODES_BOMSR		0xFF
+
+/* (A) Table 3.1/3.2 Class-Specific Request Codes */
+#define USB_MSC_REQ_BULK_ONLY_RESET	0xFF
+#define USB_MSC_REQ_GET_MAX_LUN		0xFE
+
+usbd_mass_storage *usb_msc_init(usbd_device *usbd_dev,
+				 uint8_t ep_in, uint8_t ep_in_size,
+				 uint8_t ep_out, uint8_t ep_out_size,
+				 const char *vendor_id,
+				 const char *product_id,
+				 const char *product_revision_level,
+				 const uint32_t block_count,
+				 int (*read_block)(uint32_t lba, uint8_t *copy_to),
+				 int (*write_block)(uint32_t lba, const uint8_t *copy_from));
+
+#endif
+
+/**@}*/