freebsd-skq/sys/dev/usb/usb_sw_transfer.h
2009-02-23 18:31:00 +00:00

63 lines
2.1 KiB
C

/* $FreeBSD$ */
/*-
* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _USB2_SW_TRANSFER_H_
#define _USB2_SW_TRANSFER_H_
/* Software transfer function state argument values */
enum {
USB_SW_TR_SETUP,
USB_SW_TR_STATUS,
USB_SW_TR_PRE_DATA,
USB_SW_TR_POST_DATA,
USB_SW_TR_PRE_CALLBACK,
};
struct usb2_sw_transfer;
typedef void (usb2_sw_transfer_func_t)(struct usb2_xfer *, struct usb2_sw_transfer *);
/*
* The following structure is used to keep the state of a standard
* root transfer.
*/
struct usb2_sw_transfer {
struct usb2_device_request req;
struct usb2_xfer *xfer;
uint8_t *ptr;
uint16_t len;
uint8_t state;
usb2_error_t err;
};
/* prototypes */
void usb2_sw_transfer(struct usb2_sw_transfer *std,
usb2_sw_transfer_func_t *func);
#endif /* _USB2_SW_TRANSFER_H_ */