| 1 | /*
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| 2 | * Copyright (c) 2011 Jan Vesely
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 | /** @addtogroup libusb
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| 29 | * @{
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| 30 | */
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| 31 | /** @file
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| 32 | * Device keeper structure and functions.
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| 33 | *
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| 34 | * Typical USB host controller needs to keep track of various settings for
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| 35 | * each device that is connected to it.
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| 36 | * State of toggle bit, device speed etc. etc.
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| 37 | * This structure shall simplify the management.
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| 38 | */
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| 39 | #ifndef LIBUSB_HOST_BANDWIDTH_H
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| 40 | #define LIBUSB_HOST_BANDWIDTH_H
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| 41 |
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| 42 | #include <adt/hash_table.h>
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| 43 | #include <fibril_synch.h>
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| 44 | #include <usb/usb.h>
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| 45 |
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| 46 | typedef struct bandwidth {
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| 47 | hash_table_t reserved;
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| 48 | fibril_mutex_t guard;
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| 49 | size_t free;
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| 50 | } bandwidth_t;
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| 51 |
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| 52 | int bandwidth_init(bandwidth_t *instance);
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| 53 |
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| 54 | void bandwidth_destroy(bandwidth_t *instance);
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| 55 |
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| 56 | int bandwidth_reserve(bandwidth_t *instance, usb_address_t address,
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| 57 | usb_endpoint_t endpoint, usb_direction_t direction, usb_speed_t speed,
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| 58 | usb_transfer_type_t transfer_type, size_t max_packet_size, size_t size,
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| 59 | unsigned interval);
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| 60 |
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| 61 | int bandwidth_release(bandwidth_t *instance, usb_address_t address,
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| 62 | usb_endpoint_t endpoint, usb_direction_t direction);
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| 63 |
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| 64 | int bandwidth_use(bandwidth_t *instance, usb_address_t address,
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| 65 | usb_endpoint_t endpoint, usb_direction_t direction);
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| 66 |
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| 67 | int bandwidth_free(bandwidth_t *instance, usb_address_t address,
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| 68 | usb_endpoint_t endpoint, usb_direction_t direction);
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| 69 |
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| 70 | #endif
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| 71 | /**
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| 72 | * @}
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| 73 | */
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