| 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 usb
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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 |
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| 43 | /** Handle data from device to function.
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| 44 | */
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| 45 | static void handle_data_from_device(ipc_callid_t iid, ipc_call_t icall,
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| 46 | virtdev_connection_t *dev)
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| 47 | {
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| 48 | usb_target_t target = {
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| 49 | .address = IPC_GET_ARG1(icall),
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| 50 | .endpoint = IPC_GET_ARG2(icall)
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| 51 | };
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| 52 |
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| 53 | dprintf("data from device %d [%d.%d]", dev->id,
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| 54 | target.address, target.endpoint);
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| 55 |
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| 56 | size_t len;
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| 57 | void * buffer;
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| 58 | int rc = async_data_write_accept(&buffer, false,
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| 59 | 1, USB_MAX_PAYLOAD_SIZE,
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| 60 | 0, &len);
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| 61 |
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| 62 | if (rc != EOK) {
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| 63 | ipc_answer_0(iid, rc);
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| 64 | return;
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| 65 | }
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| 66 |
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| 67 | rc = hc_fillin_transaction_from_device(USB_TRANSFER_INTERRUPT, target, buffer, len);
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| 68 |
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| 69 | ipc_answer_0(iid, rc);
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| 70 | }
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| 71 |
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| 72 | /** Connection handler for communcation with virtual device.
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| 73 | *
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| 74 | * @param phone_hash Incoming phone hash.
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| 75 | * @param dev Virtual device handle.
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| 76 | */
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| 77 | void connection_handler_device(ipcarg_t phone_hash, virtdev_connection_t *dev)
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| 78 | {
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| 79 | assert(dev != NULL);
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| 80 |
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| 81 | dprintf("phone%#x: virtual device %d connected",
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| 82 | phone_hash, dev->id);
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| 83 |
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| 84 | while (true) {
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| 85 | ipc_callid_t callid;
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| 86 | ipc_call_t call;
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| 87 |
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| 88 | callid = async_get_call(&call);
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| 89 |
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| 90 | switch (IPC_GET_METHOD(call)) {
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| 91 | case IPC_M_PHONE_HUNGUP:
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| 92 | ipc_hangup(dev->phone);
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| 93 | ipc_answer_0(callid, EOK);
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| 94 | dprintf("phone%#x: device %d hang-up",
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| 95 | phone_hash, dev->id);
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| 96 | return;
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| 97 |
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| 98 | case IPC_M_CONNECT_TO_ME:
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| 99 | ipc_answer_0(callid, ELIMIT);
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| 100 | break;
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| 101 |
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| 102 | case IPC_M_USBVIRT_DATA_FROM_DEVICE:
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| 103 | handle_data_from_device(callid, call, dev);
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| 104 | break;
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| 105 |
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| 106 | default:
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| 107 | ipc_answer_0(callid, EINVAL);
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| 108 | break;
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| 109 | }
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| 110 | }
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| 111 | }
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| 112 |
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| 113 | /**
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| 114 | * @}
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| 115 | */
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