source: mainline/uspace/lib/usbhost/src/endpoint.c@ 7265558

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 7265558 was 7265558, checked in by Jan Vesely <jano.vesely@…>, 14 years ago

libusbhost: Drop hash_table and use multiple lists instead.

This has several advantages:
Knowing that all endpoints on one address are in one list makes toggle resets more efficient.
Endpoint search is done only once for inserts and deletes.
Lists are part of the structure and not allocated separately, removing one more failure point from init path.
  • Property mode set to 100644
File size: 4.7 KB
Line 
1/*
2 * Copyright (c) 2011 Jan Vesely
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup drvusbuhcihc
30 * @{
31 */
32/** @file
33 * @brief UHCI host controller driver structure
34 */
35
36#include <assert.h>
37#include <stdlib.h>
38#include <errno.h>
39#include <usb/host/endpoint.h>
40
41endpoint_t * endpoint_create(usb_address_t address, usb_endpoint_t endpoint,
42 usb_direction_t direction, usb_transfer_type_t type, usb_speed_t speed,
43 size_t max_packet_size, size_t bw)
44{
45 endpoint_t *instance = malloc(sizeof(endpoint_t));
46 if (instance) {
47 instance->address = address;
48 instance->endpoint = endpoint;
49 instance->direction = direction;
50 instance->transfer_type = type;
51 instance->speed = speed;
52 instance->max_packet_size = max_packet_size;
53 instance->bandwidth = bw;
54 instance->toggle = 0;
55 instance->active = false;
56 instance->destroy_hook = NULL;
57 instance->hc_data.data = NULL;
58 instance->hc_data.toggle_get = NULL;
59 instance->hc_data.toggle_set = NULL;
60 link_initialize(&instance->link);
61 fibril_mutex_initialize(&instance->guard);
62 fibril_condvar_initialize(&instance->avail);
63 endpoint_clear_hc_data(instance);
64 }
65 return instance;
66}
67/*----------------------------------------------------------------------------*/
68void endpoint_destroy(endpoint_t *instance)
69{
70 assert(instance);
71 assert(!instance->active);
72 if (instance->hc_data.data) {
73 assert(instance->destroy_hook);
74 instance->destroy_hook(instance);
75 }
76 free(instance);
77}
78/*----------------------------------------------------------------------------*/
79void endpoint_set_hc_data(endpoint_t *instance,
80 void *data, void (*destroy_hook)(endpoint_t *),
81 int (*toggle_get)(void *), void (*toggle_set)(void *, int))
82{
83 assert(instance);
84 instance->destroy_hook = destroy_hook;
85 instance->hc_data.data = data;
86 instance->hc_data.toggle_get = toggle_get;
87 instance->hc_data.toggle_set = toggle_set;
88}
89/*----------------------------------------------------------------------------*/
90void endpoint_clear_hc_data(endpoint_t *instance)
91{
92 assert(instance);
93 instance->destroy_hook = NULL;
94 instance->hc_data.data = NULL;
95 instance->hc_data.toggle_get = NULL;
96 instance->hc_data.toggle_set = NULL;
97}
98/*----------------------------------------------------------------------------*/
99void endpoint_use(endpoint_t *instance)
100{
101 assert(instance);
102 fibril_mutex_lock(&instance->guard);
103 while (instance->active)
104 fibril_condvar_wait(&instance->avail, &instance->guard);
105 instance->active = true;
106 fibril_mutex_unlock(&instance->guard);
107}
108/*----------------------------------------------------------------------------*/
109void endpoint_release(endpoint_t *instance)
110{
111 assert(instance);
112 fibril_mutex_lock(&instance->guard);
113 instance->active = false;
114 fibril_mutex_unlock(&instance->guard);
115 fibril_condvar_signal(&instance->avail);
116}
117/*----------------------------------------------------------------------------*/
118int endpoint_toggle_get(endpoint_t *instance)
119{
120 assert(instance);
121 if (instance->hc_data.toggle_get)
122 instance->toggle =
123 instance->hc_data.toggle_get(instance->hc_data.data);
124 return (int)instance->toggle;
125}
126/*----------------------------------------------------------------------------*/
127void endpoint_toggle_set(endpoint_t *instance, int toggle)
128{
129 assert(instance);
130 assert(toggle == 0 || toggle == 1);
131 if (instance->hc_data.toggle_set)
132 instance->hc_data.toggle_set(instance->hc_data.data, toggle);
133 instance->toggle = toggle;
134}
135/**
136 * @}
137 */
Note: See TracBrowser for help on using the repository browser.