| 1 | /*
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| 2 | * Copyright (c) 2010 Vojtech Horky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup drvusbvhc
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | * @brief Connection handling of calls from virtual device (implementation).
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| 34 | */
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| 35 |
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| 36 | #include <assert.h>
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| 37 | #include <errno.h>
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| 38 | #include <usbvirt/hub.h>
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| 39 |
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| 40 | #include "conn.h"
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| 41 | #include "hc.h"
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| 42 | #include "hub.h"
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| 43 |
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| 44 | #define DEVICE_NAME_MAXLENGTH 32
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| 45 |
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| 46 | static int get_device_name(int phone, char *buffer, size_t len)
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| 47 | {
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| 48 | ipc_call_t answer_data;
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| 49 | sysarg_t answer_rc;
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| 50 | aid_t req;
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| 51 | int rc;
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| 52 |
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| 53 | req = async_send_0(phone,
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| 54 | IPC_M_USBVIRT_GET_NAME,
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| 55 | &answer_data);
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| 56 |
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| 57 | rc = async_data_read_start(phone, buffer, len);
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| 58 | if (rc != EOK) {
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| 59 | async_wait_for(req, NULL);
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| 60 | return EINVAL;
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| 61 | }
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| 62 |
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| 63 | async_wait_for(req, &answer_rc);
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| 64 | rc = (int)answer_rc;
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| 65 |
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| 66 | if (IPC_GET_ARG1(answer_data) < len) {
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| 67 | len = IPC_GET_ARG1(answer_data);
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| 68 | } else {
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| 69 | len--;
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| 70 | }
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| 71 | buffer[len] = 0;
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| 72 |
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| 73 | return rc;
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| 74 | }
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| 75 |
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| 76 | /** Default handler for IPC methods not handled by DDF.
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| 77 | *
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| 78 | * @param dev Device handling the call.
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| 79 | * @param icallid Call id.
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| 80 | * @param icall Call data.
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| 81 | */
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| 82 | void default_connection_handler(device_t *dev,
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| 83 | ipc_callid_t icallid, ipc_call_t *icall)
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| 84 | {
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| 85 | sysarg_t method = IPC_GET_IMETHOD(*icall);
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| 86 |
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| 87 | if (method == IPC_M_CONNECT_TO_ME) {
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| 88 | int callback = IPC_GET_ARG5(*icall);
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| 89 | virtdev_connection_t *dev
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| 90 | = virtdev_add_device(callback, (sysarg_t)fibril_get_id());
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| 91 | if (!dev) {
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| 92 | ipc_answer_0(icallid, EEXISTS);
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| 93 | ipc_hangup(callback);
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| 94 | return;
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| 95 | }
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| 96 | ipc_answer_0(icallid, EOK);
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| 97 |
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| 98 | char devname[DEVICE_NAME_MAXLENGTH + 1];
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| 99 | int rc = get_device_name(callback, devname, DEVICE_NAME_MAXLENGTH);
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| 100 |
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| 101 | usb_log_info("New virtual device `%s' (id = %x).\n",
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| 102 | rc == EOK ? devname : "<unknown>", dev->id);
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| 103 |
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| 104 | return;
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| 105 | }
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| 106 |
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| 107 | ipc_answer_0(icallid, EINVAL);
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| 108 | }
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| 109 |
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| 110 | /** Callback for DDF when client disconnects.
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| 111 | *
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| 112 | * @param d Device the client was connected to.
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| 113 | */
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| 114 | void on_client_close(device_t *d)
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| 115 | {
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| 116 | /*
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| 117 | * Maybe a virtual device is being unplugged.
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| 118 | */
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| 119 | virtdev_connection_t *dev = virtdev_find((sysarg_t)fibril_get_id());
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| 120 | if (dev == NULL) {
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| 121 | return;
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| 122 | }
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| 123 |
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| 124 | usb_log_info("Virtual device disconnected (id = %x).\n", dev->id);
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| 125 | virtdev_destroy_device(dev);
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| 126 | }
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| 127 |
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| 128 |
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| 129 | /**
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| 130 | * @}
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| 131 | */
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