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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Most of this source has been derived from the Linux and
* U-Boot USB Mass Storage driver implementations.
*
* Adapted for barebox:
* Copyright (c) 2011, AMK Drives & Controls Ltd.
*/
#ifndef _STORAGE_USB_H_
#define _STORAGE_USB_H_
#include <usb/usb.h>
#include <block.h>
#include <disks.h>
#include <scsi.h>
#include <linux/list.h>
/* some defines, similar to ch9.h */
#define USB_EP_NUM(epd) \
((epd)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK)
#define USB_EP_IS_DIR_IN(epd) \
(((epd)->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
#define USB_EP_IS_XFER_BULK(epd) \
(((epd)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == \
USB_ENDPOINT_XFER_BULK)
#define USB_EP_IS_XFER_INT(epd) \
(((epd)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == \
USB_ENDPOINT_XFER_INT)
#define USB_EP_IS_INT_IN(epd) \
(USB_EP_IS_XFER_INT(epd) && USB_EP_IS_DIR_IN(epd))
struct us_data;
struct us_blk_dev;
typedef int (trans_cmnd)(struct us_blk_dev *usb_blkdev,
const u8 *cmd, u8 cmdlen,
void *data, u32 datalen);
typedef int (*trans_reset)(struct us_data *data);
/* one us_data object allocated per usb storage device */
struct us_data {
struct usb_device *pusb_dev; /* this usb_device */
unsigned char send_bulk_ep; /* used endpoints */
unsigned char recv_bulk_ep;
unsigned char ifnum; /* interface number */
unsigned char protocol;
unsigned char max_lun;
char *transport_name;
trans_cmnd *transport; /* transport function */
trans_reset transport_reset;/* transport device reset */
/* SCSI interfaces */
struct list_head blk_dev_list;
};
/* one us_blk_dev object allocated per LUN */
struct us_blk_dev {
struct us_data *us; /* LUN's enclosing dev */
struct block_device blk; /* the blockdevice for the dev */
unsigned char lun; /* the LUN of this blk dev */
struct list_head list; /* siblings */
};
#endif
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