source: mainline/uspace/lib/usbvirt/src/device.c@ 9934f7d

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 9934f7d was 9934f7d, checked in by Jiri Svoboda <jiri@…>, 14 years ago

Add extra argument to async connection handlers that can be used for passing
information from async_connect_to_me() to the handler.

  • Property mode set to 100644
File size: 3.3 KB
RevLine 
[e25a849]1/*
2 * Copyright (c) 2011 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 libusbvirt
30 * @{
31 */
32/** @file
33 * Virtual USB device main routines.
34 */
35#include <errno.h>
36#include <str.h>
37#include <stdio.h>
38#include <assert.h>
39#include <async.h>
40#include <devman.h>
41#include <usbvirt/device.h>
42#include <usbvirt/ipc.h>
43
44#include <usb/debug.h>
45
[beee81a]46/** Current device. */
[e25a849]47static usbvirt_device_t *DEV = NULL;
48
[beee81a]49/** Main IPC call handling from virtual host controller.
50 *
[9934f7d]51 * @param iid Caller identification
52 * @param icall Initial incoming call
53 * @param arg Local argument
[beee81a]54 */
[9934f7d]55static void callback_connection(ipc_callid_t iid, ipc_call_t *icall, void *arg)
[e25a849]56{
57 assert(DEV != NULL);
58
59 async_answer_0(iid, EOK);
60
61 while (true) {
62 ipc_callid_t callid;
63 ipc_call_t call;
64
65 callid = async_get_call(&call);
66 bool processed = usbvirt_ipc_handle_call(DEV, callid, &call);
67 if (!processed) {
[79ae36dd]68 if (!IPC_GET_IMETHOD(call)) {
69 async_answer_0(callid, EOK);
70 return;
71 } else
72 async_answer_0(callid, EINVAL);
[e25a849]73 }
74 }
75}
76
77/** Connect the device to the virtual host controller.
78 *
79 * @param dev The virtual device to be (virtually) plugged in.
80 * @param vhc_path Devman path to the virtual host controller.
81 * @return Error code.
82 */
83int usbvirt_device_plug(usbvirt_device_t *dev, const char *vhc_path)
84{
[79ae36dd]85 if (DEV != NULL)
[beee81a]86 return ELIMIT;
[79ae36dd]87
88 devman_handle_t handle;
89 int rc = devman_device_get_handle(vhc_path, &handle, 0);
90 if (rc != EOK)
[e25a849]91 return rc;
[79ae36dd]92
93 async_sess_t *hcd_sess =
94 devman_device_connect(EXCHANGE_SERIALIZE, handle, 0);
95 if (!hcd_sess)
96 return ENOMEM;
97
[e25a849]98 DEV = dev;
[79ae36dd]99 dev->vhc_sess = hcd_sess;
100
101 async_exch_t *exch = async_exchange_begin(hcd_sess);
[9934f7d]102 rc = async_connect_to_me(exch, 0, 0, 0, callback_connection, NULL);
[79ae36dd]103 async_exchange_end(exch);
104
105 if (rc != EOK)
[e25a849]106 DEV = NULL;
[79ae36dd]107
[beee81a]108 return rc;
[e25a849]109}
110
[beee81a]111/** Disconnect the device from virtual host controller.
112 *
113 * @param dev Device to be disconnected.
114 */
115void usbvirt_device_unplug(usbvirt_device_t *dev)
116{
[79ae36dd]117 async_hangup(dev->vhc_sess);
[beee81a]118}
[e25a849]119
120/**
121 * @}
122 */
Note: See TracBrowser for help on using the repository browser.