1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2014 Nahanni Systems Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: stable/11/usr.sbin/bhyve/usb_emul.c 336189 2018-07-11 07:16:13Z araujo $");
31
32#include <sys/types.h>
33#include <sys/queue.h>
34
35#include <assert.h>
36#include <stdio.h>
37#include <stdlib.h>
38#include <string.h>
39#include <pthread.h>
40
41#include "usb_emul.h"
42
43SET_DECLARE(usb_emu_set, struct usb_devemu);
44
45struct usb_devemu *
46usb_emu_finddev(char *name)
47{
48	struct usb_devemu **udpp, *udp;
49
50	SET_FOREACH(udpp, usb_emu_set) {
51		udp = *udpp;
52		if (!strcmp(udp->ue_emu, name))
53			return (udp);
54	}
55
56	return (NULL);
57}
58
59struct usb_data_xfer_block *
60usb_data_xfer_append(struct usb_data_xfer *xfer, void *buf, int blen,
61                     void *hci_data, int ccs)
62{
63	struct usb_data_xfer_block *xb;
64
65	if (xfer->ndata >= USB_MAX_XFER_BLOCKS)
66		return (NULL);
67
68	xb = &xfer->data[xfer->tail];
69	xb->buf = buf;
70	xb->blen = blen;
71	xb->hci_data = hci_data;
72	xb->ccs = ccs;
73	xb->processed = 0;
74	xb->bdone = 0;
75	xfer->ndata++;
76	xfer->tail = (xfer->tail + 1) % USB_MAX_XFER_BLOCKS;
77	return (xb);
78}
79