source: mainline/uspace/drv/vhc/devices.c@ f401312

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since f401312 was 11658b64, checked in by Vojtech Horky <vojtechhorky@…>, 15 years ago

Merged vojtechhorky/ - libusbvirt clean-up
  • Property mode set to 100644
File size: 5.1 KB
Line 
1/*
2 * Copyright (c) 2010 Vojtech Horky
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 usb
30 * @{
31 */
32/** @file
33 * @brief Virtual device management (implementation).
34 */
35
36#include <ipc/ipc.h>
37#include <adt/list.h>
38#include <bool.h>
39#include <async.h>
40#include <stdlib.h>
41#include <stdio.h>
42#include <errno.h>
43#include <str_error.h>
44
45#include <usbvirt/hub.h>
46
47#include "devices.h"
48#include "hub.h"
49#include "hub/virthub.h"
50#include "vhcd.h"
51
52#define list_foreach(pos, head) \
53 for (pos = (head)->next; pos != (head); \
54 pos = pos->next)
55
56static LIST_INITIALIZE(devices);
57
58/** Create virtual device.
59 *
60 * @param address USB address.
61 * @param phone Callback phone.
62 * @return New device.
63 * @retval NULL Out of memory or address already occupied.
64 */
65virtdev_connection_t *virtdev_add_device(int phone)
66{
67 virtdev_connection_t *dev = (virtdev_connection_t *)
68 malloc(sizeof(virtdev_connection_t));
69 dev->phone = phone;
70 list_append(&dev->link, &devices);
71
72 virthub_connect_device(&virtual_hub_device, dev);
73
74 return dev;
75}
76
77/** Destroy virtual device.
78 */
79void virtdev_destroy_device(virtdev_connection_t *dev)
80{
81 virthub_disconnect_device(&virtual_hub_device, dev);
82 list_remove(&dev->link);
83 free(dev);
84}
85
86/** Send data to all connected devices.
87 *
88 * @param transaction Transaction to be sent over the bus.
89 */
90usb_transaction_outcome_t virtdev_send_to_all(transaction_t *transaction)
91{
92 link_t *pos;
93 list_foreach(pos, &devices) {
94 virtdev_connection_t *dev
95 = list_get_instance(pos, virtdev_connection_t, link);
96
97 if (!virthub_is_device_enabled(&virtual_hub_device, dev)) {
98 continue;
99 }
100
101 ipc_call_t answer_data;
102 sysarg_t answer_rc;
103 aid_t req;
104 int rc = EOK;
105 int method = IPC_M_USBVIRT_TRANSACTION_SETUP;
106
107 switch (transaction->type) {
108 case USBVIRT_TRANSACTION_SETUP:
109 method = IPC_M_USBVIRT_TRANSACTION_SETUP;
110 break;
111 case USBVIRT_TRANSACTION_IN:
112 method = IPC_M_USBVIRT_TRANSACTION_IN;
113 break;
114 case USBVIRT_TRANSACTION_OUT:
115 method = IPC_M_USBVIRT_TRANSACTION_OUT;
116 break;
117 }
118
119 req = async_send_3(dev->phone,
120 method,
121 transaction->target.address,
122 transaction->target.endpoint,
123 transaction->len,
124 &answer_data);
125
126 if (transaction->len > 0) {
127 if (transaction->type == USBVIRT_TRANSACTION_IN) {
128 rc = async_data_read_start(dev->phone,
129 transaction->buffer, transaction->len);
130 } else {
131 rc = async_data_write_start(dev->phone,
132 transaction->buffer, transaction->len);
133 }
134 }
135
136 if (rc != EOK) {
137 async_wait_for(req, NULL);
138 } else {
139 async_wait_for(req, &answer_rc);
140 rc = (int)answer_rc;
141 }
142 }
143
144 /*
145 * Send the data to the virtual hub as well
146 * (if the address matches).
147 */
148 if (virtual_hub_device.address == transaction->target.address) {
149 size_t tmp;
150 dprintf(1, "sending `%s' transaction to hub",
151 usbvirt_str_transaction_type(transaction->type));
152 switch (transaction->type) {
153 case USBVIRT_TRANSACTION_SETUP:
154 virtual_hub_device.transaction_setup(
155 &virtual_hub_device,
156 transaction->target.endpoint,
157 transaction->buffer, transaction->len);
158 break;
159
160 case USBVIRT_TRANSACTION_IN:
161 virtual_hub_device.transaction_in(
162 &virtual_hub_device,
163 transaction->target.endpoint,
164 transaction->buffer, transaction->len,
165 &tmp);
166 if (tmp < transaction->len) {
167 transaction->len = tmp;
168 }
169 break;
170
171 case USBVIRT_TRANSACTION_OUT:
172 virtual_hub_device.transaction_out(
173 &virtual_hub_device,
174 transaction->target.endpoint,
175 transaction->buffer, transaction->len);
176 break;
177 }
178 dprintf(4, "transaction on hub processed...");
179 }
180
181 /*
182 * TODO: maybe screw some transactions to get more
183 * real-life image.
184 */
185 return USB_OUTCOME_OK;
186}
187
188/**
189 * @}
190 */
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