source: mainline/uspace/drv/vhc/hc.h@ 4b4c797

/*
 * Copyright (c) 2010 Vojtech Horky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
 */

/** @addtogroup usb
 * @{
 */
/** @file
 * @brief Virtual HC.
 */
#ifndef VHCD_HC_H_
#define VHCD_HC_H_

#include <usb/usb.h>
#include <usbvirt/hub.h>

/** Callback after transaction is sent to USB.
 *
 * @param buffer Transaction data buffer.
 * @param size Transaction data size.
 * @param outcome Transaction outcome.
 * @param arg Custom argument.
 */
typedef void (*hc_transaction_done_callback_t)(void *buffer, size_t size,
    usb_transaction_outcome_t outcome, void *arg);

/** Pending transaction details. */
typedef struct {
        /** Linked-list link. */
        link_t link;
        /** Transaction type. */
        usbvirt_transaction_type_t type;
        /** Device address. */
        usb_target_t target;
        /** Direction of the transaction. */
        usb_direction_t direction;
        /** Transaction data buffer. */
        void * buffer;
        /** Transaction data length. */
        size_t len;
        /** Callback after transaction is done. */
        hc_transaction_done_callback_t callback;
        /** Argument to the callback. */
        void * callback_arg;
} transaction_t;

void hc_manager(void);

void hc_add_transaction_to_device(bool setup, usb_target_t target,
    void * buffer, size_t len,
    hc_transaction_done_callback_t callback, void * arg);

void hc_add_transaction_from_device(usb_target_t target,
    void * buffer, size_t len,
    hc_transaction_done_callback_t callback, void * arg);

int hc_fillin_transaction_from_device(usb_target_t target,
    void * buffer, size_t len);

#endif
/**
 * @}
 */