bdd4120608
- memory usage reduction by only allocating the required USB pipes and USB interfaces. - cleanup some USB parsing functions to be more flexible. Submitted by: Hans Petter Selasky
55 lines
2.2 KiB
C
55 lines
2.2 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _USB2_PARSE_H_
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#define _USB2_PARSE_H_
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/* structures */
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struct usb2_idesc_parse_state {
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struct usb2_descriptor *desc;
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uint8_t iface_index; /* current interface index */
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uint8_t iface_no_last;
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uint8_t iface_index_alt; /* current alternate setting */
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};
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/* prototypes */
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struct usb2_descriptor *usb2_desc_foreach(struct usb2_config_descriptor *cd,
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struct usb2_descriptor *desc);
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struct usb2_interface_descriptor *usb2_idesc_foreach(
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struct usb2_config_descriptor *cd,
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struct usb2_idesc_parse_state *ps);
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struct usb2_endpoint_descriptor *usb2_edesc_foreach(
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struct usb2_config_descriptor *cd,
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struct usb2_endpoint_descriptor *ped);
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uint8_t usb2_get_no_descriptors(struct usb2_config_descriptor *cd,
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uint8_t type);
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uint8_t usb2_get_no_alts(struct usb2_config_descriptor *cd,
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struct usb2_interface_descriptor *id);
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#endif /* _USB2_PARSE_H_ */
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