source: mainline/uspace/lib/usbhost/include/usb/host/hcd.h@ 91ca111

/*
 * Copyright (c) 2011 Jan Vesely
 * 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 libusbhost
 * @{
 */
/** @file
 *
 */

#ifndef LIBUSBHOST_HOST_HCD_H
#define LIBUSBHOST_HOST_HCD_H

#include <usb/host/endpoint.h>
#include <usb/host/usb_bus.h>
#include <usb/host/usb_transfer_batch.h>
#include <usb/usb.h>

#include <assert.h>
#include <usbhc_iface.h>
#include <stddef.h>
#include <stdint.h>

typedef struct hcd hcd_t;

typedef int (*schedule_hook_t)(hcd_t *, usb_transfer_batch_t *);
typedef int (*ep_add_hook_t)(hcd_t *, endpoint_t *);
typedef void (*ep_remove_hook_t)(hcd_t *, endpoint_t *);
typedef void (*interrupt_hook_t)(hcd_t *, uint32_t);
typedef int (*status_hook_t)(hcd_t *, uint32_t *);

typedef struct {
        /** Transfer scheduling, implement in device driver. */
        schedule_hook_t schedule;
        /** Hook called upon registering new endpoint. */
        ep_add_hook_t ep_add_hook;
        /** Hook called upon removing of an endpoint. */
        ep_remove_hook_t ep_remove_hook;
        /** Hook to be called on device interrupt, passes ARG1 */
        interrupt_hook_t irq_hook;
        /** Periodic polling hook */
        status_hook_t status_hook;
} hcd_ops_t;

/** Generic host controller driver structure. */
struct hcd {
        /** Endpoint manager. */
        usb_bus_t bus;

        /** Interrupt replacement fibril */
        fid_t polling_fibril;

        /** Driver implementation */
        hcd_ops_t ops;
        /** Device specific driver data. */
        void * driver_data;
};

extern void hcd_init(hcd_t *, usb_speed_t, size_t, bw_count_func_t);

static inline void hcd_set_implementation(hcd_t *hcd, void *data,
    const hcd_ops_t *ops)
{
        assert(hcd);
        if (ops) {
                hcd->driver_data = data;
                hcd->ops = *ops;
        } else {
                memset(&hcd->ops, 0, sizeof(hcd->ops));
        }
}

static inline void * hcd_get_driver_data(hcd_t *hcd)
{
        assert(hcd);
        return hcd->driver_data;
}

extern usb_address_t hcd_request_address(hcd_t *, usb_speed_t);

extern int hcd_release_address(hcd_t *, usb_address_t);

extern int hcd_reserve_default_address(hcd_t *, usb_speed_t);

static inline int hcd_release_default_address(hcd_t *hcd)
{
        return hcd_release_address(hcd, USB_ADDRESS_DEFAULT);
}

extern int hcd_add_ep(hcd_t *, usb_target_t, usb_direction_t,
    usb_transfer_type_t, size_t, unsigned int, size_t, usb_address_t,
    unsigned int);

extern int hcd_remove_ep(hcd_t *, usb_target_t, usb_direction_t);

extern int hcd_send_batch(hcd_t *, usb_target_t, usb_direction_t, void *,
    size_t, uint64_t, usbhc_iface_transfer_in_callback_t,
    usbhc_iface_transfer_out_callback_t, void *, const char *);

extern ssize_t hcd_send_batch_sync(hcd_t *, usb_target_t, usb_direction_t,
    void *, size_t, uint64_t, const char *);

#endif

/**
 * @}
 */