| 1 | /*
|
|---|
| 2 | * Copyright (c) 2006 Ondrej Palkovsky
|
|---|
| 3 | * Copyright (c) 2012 Jakub Jermar
|
|---|
| 4 | * All rights reserved.
|
|---|
| 5 | *
|
|---|
| 6 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 7 | * modification, are permitted provided that the following conditions
|
|---|
| 8 | * are met:
|
|---|
| 9 | *
|
|---|
| 10 | * - Redistributions of source code must retain the above copyright
|
|---|
| 11 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 12 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 13 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 14 | * documentation and/or other materials provided with the distribution.
|
|---|
| 15 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 16 | * derived from this software without specific prior written permission.
|
|---|
| 17 | *
|
|---|
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 28 | */
|
|---|
| 29 |
|
|---|
| 30 | /** @addtogroup genericipc
|
|---|
| 31 | * @{
|
|---|
| 32 | */
|
|---|
| 33 | /** @file
|
|---|
| 34 | */
|
|---|
| 35 |
|
|---|
| 36 | #include <ipc/sysipc_ops.h>
|
|---|
| 37 | #include <ipc/ipc.h>
|
|---|
| 38 | #include <ipc/ipcrsc.h>
|
|---|
| 39 | #include <abi/errno.h>
|
|---|
| 40 | #include <arch.h>
|
|---|
| 41 |
|
|---|
| 42 | static errno_t request_preprocess(call_t *call, phone_t *phone)
|
|---|
| 43 | {
|
|---|
| 44 | cap_handle_t phone_handle;
|
|---|
| 45 | errno_t rc = phone_alloc(TASK, &phone_handle);
|
|---|
| 46 |
|
|---|
| 47 | /* Remember the phone capability or that an error occured. */
|
|---|
| 48 | call->priv = (rc == EOK) ? phone_handle : -1;
|
|---|
| 49 |
|
|---|
| 50 | if (rc != EOK) {
|
|---|
| 51 | return rc;
|
|---|
| 52 | }
|
|---|
| 53 |
|
|---|
| 54 | /* Set ARG5 for server */
|
|---|
| 55 | kobject_t *phone_obj = kobject_get(TASK, phone_handle,
|
|---|
| 56 | KOBJECT_TYPE_PHONE);
|
|---|
| 57 | if (!phone_obj) {
|
|---|
| 58 | /*
|
|---|
| 59 | * Another thread of the same task can destroy the new
|
|---|
| 60 | * capability before we manage to get a reference from it.
|
|---|
| 61 | */
|
|---|
| 62 | call->priv = -1;
|
|---|
| 63 | return ENOENT;
|
|---|
| 64 | }
|
|---|
| 65 | /* Hand over phone_obj's reference to ARG5 */
|
|---|
| 66 | IPC_SET_ARG5(call->data, (sysarg_t) phone_obj->phone);
|
|---|
| 67 |
|
|---|
| 68 | return EOK;
|
|---|
| 69 | }
|
|---|
| 70 |
|
|---|
| 71 | static errno_t request_forget(call_t *call)
|
|---|
| 72 | {
|
|---|
| 73 | cap_handle_t phone_handle = (cap_handle_t) call->priv;
|
|---|
| 74 |
|
|---|
| 75 | if (phone_handle < 0) {
|
|---|
| 76 | return EOK;
|
|---|
| 77 | }
|
|---|
| 78 |
|
|---|
| 79 | phone_dealloc(phone_handle);
|
|---|
| 80 | /* Hand over reference from ARG5 to phone->kobject */
|
|---|
| 81 | phone_t *phone = (phone_t *) IPC_GET_ARG5(call->data);
|
|---|
| 82 | /* Drop phone_obj's reference */
|
|---|
| 83 | kobject_put(phone->kobject);
|
|---|
| 84 | return EOK;
|
|---|
| 85 | }
|
|---|
| 86 |
|
|---|
| 87 | static errno_t answer_preprocess(call_t *answer, ipc_data_t *olddata)
|
|---|
| 88 | {
|
|---|
| 89 | /* Hand over reference from ARG5 to phone */
|
|---|
| 90 | phone_t *phone = (phone_t *) IPC_GET_ARG5(*olddata);
|
|---|
| 91 |
|
|---|
| 92 | /* If the user accepted call, connect */
|
|---|
| 93 | if (IPC_GET_RETVAL(answer->data) == EOK) {
|
|---|
| 94 | /* Hand over reference from phone to the answerbox */
|
|---|
| 95 | (void) ipc_phone_connect(phone, &TASK->answerbox);
|
|---|
| 96 | } else {
|
|---|
| 97 | kobject_put(phone->kobject);
|
|---|
| 98 | }
|
|---|
| 99 |
|
|---|
| 100 | return EOK;
|
|---|
| 101 | }
|
|---|
| 102 |
|
|---|
| 103 | static errno_t answer_process(call_t *answer)
|
|---|
| 104 | {
|
|---|
| 105 | cap_handle_t phone_handle = (cap_handle_t) answer->priv;
|
|---|
| 106 |
|
|---|
| 107 | if (IPC_GET_RETVAL(answer->data)) {
|
|---|
| 108 | if (phone_handle >= 0) {
|
|---|
| 109 | /*
|
|---|
| 110 | * The phone was indeed allocated and now needs
|
|---|
| 111 | * to be deallocated.
|
|---|
| 112 | */
|
|---|
| 113 | phone_dealloc(phone_handle);
|
|---|
| 114 | }
|
|---|
| 115 | } else {
|
|---|
| 116 | IPC_SET_ARG5(answer->data, phone_handle);
|
|---|
| 117 | }
|
|---|
| 118 |
|
|---|
| 119 | return EOK;
|
|---|
| 120 | }
|
|---|
| 121 |
|
|---|
| 122 | sysipc_ops_t ipc_m_connect_me_to_ops = {
|
|---|
| 123 | .request_preprocess = request_preprocess,
|
|---|
| 124 | .request_forget = request_forget,
|
|---|
| 125 | .request_process = null_request_process,
|
|---|
| 126 | .answer_cleanup = null_answer_cleanup,
|
|---|
| 127 | .answer_preprocess = answer_preprocess,
|
|---|
| 128 | .answer_process = answer_process,
|
|---|
| 129 | };
|
|---|
| 130 |
|
|---|
| 131 | /** @}
|
|---|
| 132 | */
|
|---|
