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955 palkovsky 1
/*
2071 jermar 2
 * Copyright (c) 2006 Ondrej Palkovsky
955 palkovsky 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
 
1757 jermar 29
/** @addtogroup genericipc
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
955 palkovsky 35
/* Lock ordering
36
 *
37
 * First the answerbox, then the phone
38
 */
39
 
1040 palkovsky 40
#include <synch/spinlock.h>
41
#include <synch/waitq.h>
1364 jermar 42
#include <synch/synch.h>
955 palkovsky 43
#include <ipc/ipc.h>
44
#include <errno.h>
45
#include <mm/slab.h>
46
#include <arch.h>
47
#include <proc/task.h>
48
#include <memstr.h>
49
#include <debug.h>
50
 
51
#include <print.h>
52
#include <proc/thread.h>
1258 palkovsky 53
#include <arch/interrupt.h>
1281 palkovsky 54
#include <ipc/irq.h>
955 palkovsky 55
 
965 palkovsky 56
/* Open channel that is assigned automatically to new tasks */
57
answerbox_t *ipc_phone_0 = NULL;
955 palkovsky 58
 
59
static slab_cache_t *ipc_call_slab;
60
 
1084 palkovsky 61
/* Initialize new call */
62
static void _ipc_call_init(call_t *call)
63
{
1780 jermar 64
    memsetb((uintptr_t)call, sizeof(*call), 0);
1084 palkovsky 65
    call->callerbox = &TASK->answerbox;
66
    call->sender = TASK;
67
}
68
 
955 palkovsky 69
/** Allocate & initialize call structure
70
 *
71
 * The call is initialized, so that the reply will be directed
72
 * to TASK->answerbox
1258 palkovsky 73
 *
74
 * @param flags Parameters for slab_alloc (ATOMIC, etc.)
955 palkovsky 75
 */
1258 palkovsky 76
call_t * ipc_call_alloc(int flags)
955 palkovsky 77
{
78
    call_t *call;
79
 
1258 palkovsky 80
    call = slab_alloc(ipc_call_slab, flags);
1084 palkovsky 81
    _ipc_call_init(call);
955 palkovsky 82
 
83
    return call;
84
}
85
 
965 palkovsky 86
/** Initialize allocated call */
1084 palkovsky 87
void ipc_call_static_init(call_t *call)
965 palkovsky 88
{
1084 palkovsky 89
    _ipc_call_init(call);
90
    call->flags |= IPC_CALL_STATIC_ALLOC;
965 palkovsky 91
}
92
 
955 palkovsky 93
/** Deallocate call stracuture */
94
void ipc_call_free(call_t *call)
95
{
96
    slab_free(ipc_call_slab, call);
97
}
98
 
99
/** Initialize answerbox structure
100
 */
101
void ipc_answerbox_init(answerbox_t *box)
102
{
1040 palkovsky 103
    spinlock_initialize(&box->lock, "ipc_box_lock");
1258 palkovsky 104
    spinlock_initialize(&box->irq_lock, "ipc_box_irqlock");
1040 palkovsky 105
    waitq_initialize(&box->wq);
955 palkovsky 106
    list_initialize(&box->connected_phones);
107
    list_initialize(&box->calls);
108
    list_initialize(&box->dispatched_calls);
109
    list_initialize(&box->answers);
1258 palkovsky 110
    list_initialize(&box->irq_notifs);
1933 jermar 111
    list_initialize(&box->irq_head);
1027 palkovsky 112
    box->task = TASK;
955 palkovsky 113
}
114
 
1040 palkovsky 115
/** Connect phone to answerbox */
116
void ipc_phone_connect(phone_t *phone, answerbox_t *box)
955 palkovsky 117
{
1084 palkovsky 118
    spinlock_lock(&phone->lock);
119
 
1568 palkovsky 120
    phone->state = IPC_PHONE_CONNECTED;
955 palkovsky 121
    phone->callee = box;
965 palkovsky 122
 
1040 palkovsky 123
    spinlock_lock(&box->lock);
1573 palkovsky 124
    list_append(&phone->link, &box->connected_phones);
1040 palkovsky 125
    spinlock_unlock(&box->lock);
1084 palkovsky 126
 
127
    spinlock_unlock(&phone->lock);
955 palkovsky 128
}
129
 
1223 jermar 130
/** Initialize phone structure and connect phone to answerbox
1040 palkovsky 131
 */
132
void ipc_phone_init(phone_t *phone)
133
{
134
    spinlock_initialize(&phone->lock, "phone_lock");
135
    phone->callee = NULL;
1568 palkovsky 136
    phone->state = IPC_PHONE_FREE;
1088 palkovsky 137
    atomic_set(&phone->active_calls, 0);
1040 palkovsky 138
}
139
 
959 palkovsky 140
/** Helper function to facilitate synchronous calls */
141
void ipc_call_sync(phone_t *phone, call_t *request)
142
{
143
    answerbox_t sync_box;
955 palkovsky 144
 
959 palkovsky 145
    ipc_answerbox_init(&sync_box);
146
 
147
    /* We will receive data on special box */
148
    request->callerbox = &sync_box;
149
 
150
    ipc_call(phone, request);
1502 jermar 151
    ipc_wait_for_call(&sync_box, SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NONE);
959 palkovsky 152
}
153
 
1084 palkovsky 154
/** Answer message that was not dispatched and is not entered in
155
 * any queue
156
 */
157
static void _ipc_answer_free_call(call_t *call)
158
{
159
    answerbox_t *callerbox = call->callerbox;
160
 
161
    call->flags |= IPC_CALL_ANSWERED;
162
 
163
    spinlock_lock(&callerbox->lock);
1573 palkovsky 164
    list_append(&call->link, &callerbox->answers);
1084 palkovsky 165
    spinlock_unlock(&callerbox->lock);
166
    waitq_wakeup(&callerbox->wq, 0);
167
}
168
 
169
/** Answer message, that is in callee queue
170
 *
171
 * @param box Answerbox that is answering the message
172
 * @param call Modified request that is being sent back
173
 */
174
void ipc_answer(answerbox_t *box, call_t *call)
175
{
176
    /* Remove from active box */
177
    spinlock_lock(&box->lock);
1573 palkovsky 178
    list_remove(&call->link);
1084 palkovsky 179
    spinlock_unlock(&box->lock);
180
    /* Send back answer */
181
    _ipc_answer_free_call(call);
182
}
183
 
1090 palkovsky 184
/** Simulate sending back a message
185
 *
186
 * Most errors are better handled by forming a normal backward
187
 * message and sending it as a normal answer.
188
 */
1780 jermar 189
void ipc_backsend_err(phone_t *phone, call_t *call, unative_t err)
1090 palkovsky 190
{
191
    call->data.phone = phone;
192
    atomic_inc(&phone->active_calls);
1568 palkovsky 193
    IPC_SET_RETVAL(call->data, err);
1090 palkovsky 194
    _ipc_answer_free_call(call);
195
}
196
 
1086 palkovsky 197
/* Unsafe unchecking ipc_call */
198
static void _ipc_call(phone_t *phone, answerbox_t *box, call_t *call)
199
{
1088 palkovsky 200
    if (! (call->flags & IPC_CALL_FORWARDED)) {
201
        atomic_inc(&phone->active_calls);
202
        call->data.phone = phone;
203
    }
1086 palkovsky 204
 
205
    spinlock_lock(&box->lock);
1573 palkovsky 206
    list_append(&call->link, &box->calls);
1086 palkovsky 207
    spinlock_unlock(&box->lock);
208
    waitq_wakeup(&box->wq, 0);
209
}
210
 
959 palkovsky 211
/** Send a asynchronous request using phone to answerbox
955 palkovsky 212
 *
1708 jermar 213
 * @param phone Phone connected to answerbox.
214
 * @param call Structure representing the call.
955 palkovsky 215
 */
1088 palkovsky 216
int ipc_call(phone_t *phone, call_t *call)
955 palkovsky 217
{
1084 palkovsky 218
    answerbox_t *box;
955 palkovsky 219
 
1084 palkovsky 220
    spinlock_lock(&phone->lock);
1568 palkovsky 221
    if (phone->state != IPC_PHONE_CONNECTED) {
1086 palkovsky 222
        spinlock_unlock(&phone->lock);
1088 palkovsky 223
        if (call->flags & IPC_CALL_FORWARDED) {
224
            IPC_SET_RETVAL(call->data, EFORWARD);
1090 palkovsky 225
            _ipc_answer_free_call(call);
1568 palkovsky 226
        } else {
227
            if (phone->state == IPC_PHONE_HUNGUP)
1090 palkovsky 228
                ipc_backsend_err(phone, call, EHANGUP);
1088 palkovsky 229
            else
1090 palkovsky 230
                ipc_backsend_err(phone, call, ENOENT);
1088 palkovsky 231
        }
232
        return ENOENT;
1084 palkovsky 233
    }
1568 palkovsky 234
    box = phone->callee;
1086 palkovsky 235
    _ipc_call(phone, box, call);
236
 
237
    spinlock_unlock(&phone->lock);
1088 palkovsky 238
    return 0;
1086 palkovsky 239
}
955 palkovsky 240
 
1086 palkovsky 241
/** Disconnect phone from answerbox
242
 *
1568 palkovsky 243
 * This call leaves the phone in HUNGUP state. The change to 'free' is done
244
 * lazily later.
1086 palkovsky 245
 *
1568 palkovsky 246
 * @param phone Phone to be hung up
247
 *              
1086 palkovsky 248
 * @return 0 - phone disconnected, -1 - the phone was already disconnected
249
 */
1591 palkovsky 250
int ipc_phone_hangup(phone_t *phone)
1086 palkovsky 251
{
252
    answerbox_t *box;
253
    call_t *call;
254
 
255
    spinlock_lock(&phone->lock);
1568 palkovsky 256
    if (phone->state == IPC_PHONE_FREE || phone->state ==IPC_PHONE_HUNGUP \
257
        || phone->state == IPC_PHONE_CONNECTING) {
258
        spinlock_unlock(&phone->lock);
259
        return -1;
260
    }
1086 palkovsky 261
    box = phone->callee;
1568 palkovsky 262
    if (phone->state != IPC_PHONE_SLAMMED) {
263
        /* Remove myself from answerbox */
264
        spinlock_lock(&box->lock);
1573 palkovsky 265
        list_remove(&phone->link);
1568 palkovsky 266
        spinlock_unlock(&box->lock);
267
 
268
        if (phone->state != IPC_PHONE_SLAMMED) {
269
            call = ipc_call_alloc(0);
270
            IPC_SET_METHOD(call->data, IPC_M_PHONE_HUNGUP);
271
            call->flags |= IPC_CALL_DISCARD_ANSWER;
272
            _ipc_call(phone, box, call);
1088 palkovsky 273
        }
1086 palkovsky 274
    }
275
 
1568 palkovsky 276
    phone->state = IPC_PHONE_HUNGUP;
1084 palkovsky 277
    spinlock_unlock(&phone->lock);
1086 palkovsky 278
 
279
    return 0;
955 palkovsky 280
}
281
 
1040 palkovsky 282
/** Forwards call from one answerbox to a new one
283
 *
1342 jermar 284
 * @param call Call to be redirected.
285
 * @param newphone Phone to target answerbox.
1040 palkovsky 286
 * @param oldbox Old answerbox
1088 palkovsky 287
 * @return 0 on forward ok, error code, if there was error
288
 *
289
 * - the return value serves only as an information for the forwarder,
290
 *   the original caller is notified automatically with EFORWARD
1040 palkovsky 291
 */
1088 palkovsky 292
int ipc_forward(call_t *call, phone_t *newphone, answerbox_t *oldbox)
1040 palkovsky 293
{
294
    spinlock_lock(&oldbox->lock);
1573 palkovsky 295
    list_remove(&call->link);
1040 palkovsky 296
    spinlock_unlock(&oldbox->lock);
297
 
1088 palkovsky 298
    return ipc_call(newphone, call);
1040 palkovsky 299
}
300
 
955 palkovsky 301
 
302
/** Wait for phone call
303
 *
1364 jermar 304
 * @param box Answerbox expecting the call.
305
 * @param usec Timeout in microseconds. See documentation for waitq_sleep_timeout() for
306
 *         decription of its special meaning.
1502 jermar 307
 * @param flags Select mode of sleep operation. See documentation for waitq_sleep_timeout()i
308
 *      for description of its special meaning.
955 palkovsky 309
 * @return Recived message address
310
 * - to distinguish between call and answer, look at call->flags
311
 */
1780 jermar 312
call_t * ipc_wait_for_call(answerbox_t *box, uint32_t usec, int flags)
955 palkovsky 313
{
314
    call_t *request;
1258 palkovsky 315
    ipl_t ipl;
1364 jermar 316
    int rc;
955 palkovsky 317
 
1364 jermar 318
restart:
1502 jermar 319
    rc = waitq_sleep_timeout(&box->wq, usec, flags);
1364 jermar 320
    if (SYNCH_FAILED(rc))
321
        return NULL;
1086 palkovsky 322
 
1040 palkovsky 323
    spinlock_lock(&box->lock);
1258 palkovsky 324
    if (!list_empty(&box->irq_notifs)) {
325
        ipl = interrupts_disable();
326
        spinlock_lock(&box->irq_lock);
327
 
1573 palkovsky 328
        request = list_get_instance(box->irq_notifs.next, call_t, link);
329
        list_remove(&request->link);
1258 palkovsky 330
 
331
        spinlock_unlock(&box->irq_lock);
332
        interrupts_restore(ipl);
333
    } else if (!list_empty(&box->answers)) {
1086 palkovsky 334
        /* Handle asynchronous answers */
1573 palkovsky 335
        request = list_get_instance(box->answers.next, call_t, link);
336
        list_remove(&request->link);
1086 palkovsky 337
        atomic_dec(&request->data.phone->active_calls);
338
    } else if (!list_empty(&box->calls)) {
339
        /* Handle requests */
1573 palkovsky 340
        request = list_get_instance(box->calls.next, call_t, link);
341
        list_remove(&request->link);
1086 palkovsky 342
        /* Append request to dispatch queue */
1573 palkovsky 343
        list_append(&request->link, &box->dispatched_calls);
1086 palkovsky 344
    } else {
1595 palkovsky 345
        /* This can happen regularly after ipc_cleanup */
1086 palkovsky 346
        spinlock_unlock(&box->lock);
347
        goto restart;
955 palkovsky 348
    }
1040 palkovsky 349
    spinlock_unlock(&box->lock);
955 palkovsky 350
    return request;
351
}
352
 
1141 palkovsky 353
/** Answer all calls from list with EHANGUP msg */
354
static void ipc_cleanup_call_list(link_t *lst)
355
{
356
    call_t *call;
357
 
358
    while (!list_empty(lst)) {
1573 palkovsky 359
        call = list_get_instance(lst->next, call_t, link);
360
        list_remove(&call->link);
1141 palkovsky 361
 
362
        IPC_SET_RETVAL(call->data, EHANGUP);
363
        _ipc_answer_free_call(call);
364
    }
365
}
366
 
1582 palkovsky 367
/** Cleans up all IPC communication of the current task
1072 palkovsky 368
 *
1582 palkovsky 369
 * Note: ipc_hangup sets returning answerbox to TASK->answerbox, you
370
 * have to change it as well if you want to cleanup other current then current.
1072 palkovsky 371
 */
1582 palkovsky 372
void ipc_cleanup(void)
1072 palkovsky 373
{
1088 palkovsky 374
    int i;
1141 palkovsky 375
    call_t *call;
376
    phone_t *phone;
1582 palkovsky 377
 
1088 palkovsky 378
    /* Disconnect all our phones ('ipc_phone_hangup') */
379
    for (i=0;i < IPC_MAX_PHONES; i++)
1591 palkovsky 380
        ipc_phone_hangup(&TASK->phones[i]);
1088 palkovsky 381
 
1258 palkovsky 382
    /* Disconnect all connected irqs */
1582 palkovsky 383
    ipc_irq_cleanup(&TASK->answerbox);
1258 palkovsky 384
 
1141 palkovsky 385
    /* Disconnect all phones connected to our answerbox */
386
restart_phones:
1582 palkovsky 387
    spinlock_lock(&TASK->answerbox.lock);
388
    while (!list_empty(&TASK->answerbox.connected_phones)) {
389
        phone = list_get_instance(TASK->answerbox.connected_phones.next,
1573 palkovsky 390
                      phone_t, link);
1141 palkovsky 391
        if (! spinlock_trylock(&phone->lock)) {
1582 palkovsky 392
            spinlock_unlock(&TASK->answerbox.lock);
1141 palkovsky 393
            goto restart_phones;
394
        }
395
 
396
        /* Disconnect phone */
1568 palkovsky 397
        ASSERT(phone->state == IPC_PHONE_CONNECTED);
398
        phone->state = IPC_PHONE_SLAMMED;
1573 palkovsky 399
        list_remove(&phone->link);
1088 palkovsky 400
 
1141 palkovsky 401
        spinlock_unlock(&phone->lock);
402
    }
403
 
1088 palkovsky 404
    /* Answer all messages in 'calls' and 'dispatched_calls' queues */
1582 palkovsky 405
    ipc_cleanup_call_list(&TASK->answerbox.dispatched_calls);
406
    ipc_cleanup_call_list(&TASK->answerbox.calls);
407
    spinlock_unlock(&TASK->answerbox.lock);
1072 palkovsky 408
 
1088 palkovsky 409
    /* Wait for all async answers to arrive */
1568 palkovsky 410
    while (1) {
411
        /* Go through all phones, until all are FREE... */
412
        /* Locking not needed, no one else should modify
413
         * it, when we are in cleanup */
414
        for (i=0;i < IPC_MAX_PHONES; i++) {
1582 palkovsky 415
            if (TASK->phones[i].state == IPC_PHONE_HUNGUP && \
416
                atomic_get(&TASK->phones[i].active_calls) == 0)
417
                TASK->phones[i].state = IPC_PHONE_FREE;
418
 
1591 palkovsky 419
            /* Just for sure, we might have had some
420
             * IPC_PHONE_CONNECTING phones */
1582 palkovsky 421
            if (TASK->phones[i].state == IPC_PHONE_CONNECTED)
1591 palkovsky 422
                ipc_phone_hangup(&TASK->phones[i]);
423
            /* If the hangup succeeded, it has sent a HANGUP
424
             * message, the IPC is now in HUNGUP state, we
425
             * wait for the reply to come */
1582 palkovsky 426
 
427
            if (TASK->phones[i].state != IPC_PHONE_FREE)
1568 palkovsky 428
                break;
429
        }
430
        /* Voila, got into cleanup */
431
        if (i == IPC_MAX_PHONES)
432
            break;
433
 
1582 palkovsky 434
        call = ipc_wait_for_call(&TASK->answerbox, SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NONE);
1260 palkovsky 435
        ASSERT((call->flags & IPC_CALL_ANSWERED) || (call->flags & IPC_CALL_NOTIF));
1141 palkovsky 436
        ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));
437
 
1582 palkovsky 438
        atomic_dec(&TASK->active_calls);
1141 palkovsky 439
        ipc_call_free(call);
440
    }
1072 palkovsky 441
}
1258 palkovsky 442
 
443
 
1923 jermar 444
/** Initilize IPC subsystem */
1258 palkovsky 445
void ipc_init(void)
446
{
1923 jermar 447
    ipc_call_slab = slab_cache_create("ipc_call", sizeof(call_t), 0, NULL, NULL, 0);
1258 palkovsky 448
}
449
 
1573 palkovsky 450
 
451
/** Kconsole - list answerbox contents */
452
void ipc_print_task(task_id_t taskid)
453
{
454
    task_t *task;
455
    int i;
456
    call_t *call;
457
    link_t *tmp;
458
 
459
    spinlock_lock(&tasks_lock);
460
    task = task_find_by_id(taskid);
461
    if (task)
462
        spinlock_lock(&task->lock);
463
    spinlock_unlock(&tasks_lock);
464
    if (!task)
465
        return;
466
 
467
    /* Print opened phones & details */
468
    printf("PHONE:\n");
469
    for (i=0; i < IPC_MAX_PHONES;i++) {
470
        spinlock_lock(&task->phones[i].lock);
471
        if (task->phones[i].state != IPC_PHONE_FREE) {
472
            printf("%d: ",i);
473
            switch (task->phones[i].state) {
474
            case IPC_PHONE_CONNECTING:
475
                printf("connecting ");
476
                break;
477
            case IPC_PHONE_CONNECTED:
1735 decky 478
                printf("connected to: %p ",
1573 palkovsky 479
                       task->phones[i].callee);
480
                break;
481
            case IPC_PHONE_SLAMMED:
1735 decky 482
                printf("slammed by: %p ",
1573 palkovsky 483
                       task->phones[i].callee);
484
                break;
485
            case IPC_PHONE_HUNGUP:
1735 decky 486
                printf("hung up - was: %p ",
1573 palkovsky 487
                       task->phones[i].callee);
488
                break;
489
            default:
490
                break;
491
            }
492
            printf("active: %d\n", atomic_get(&task->phones[i].active_calls));
493
        }
494
        spinlock_unlock(&task->phones[i].lock);
495
    }
496
 
497
 
498
    /* Print answerbox - calls */
499
    spinlock_lock(&task->answerbox.lock);
500
    printf("ABOX - CALLS:\n");
501
    for (tmp=task->answerbox.calls.next; tmp != &task->answerbox.calls;tmp = tmp->next) {
502
        call = list_get_instance(tmp, call_t, link);
1735 decky 503
        printf("Callid: %p Srctask:%lld M:%d A1:%d A2:%d A3:%d Flags:%x\n",call,
1573 palkovsky 504
               call->sender->taskid, IPC_GET_METHOD(call->data), IPC_GET_ARG1(call->data),
505
               IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), call->flags);
506
    }
507
    /* Print answerbox - calls */
508
    printf("ABOX - DISPATCHED CALLS:\n");
509
    for (tmp=task->answerbox.dispatched_calls.next;
510
         tmp != &task->answerbox.dispatched_calls;
511
         tmp = tmp->next) {
512
        call = list_get_instance(tmp, call_t, link);
1735 decky 513
        printf("Callid: %p Srctask:%lld M:%d A1:%d A2:%d A3:%d Flags:%x\n",call,
1573 palkovsky 514
               call->sender->taskid, IPC_GET_METHOD(call->data), IPC_GET_ARG1(call->data),
515
               IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), call->flags);
516
    }
517
    /* Print answerbox - calls */
518
    printf("ABOX - ANSWERS:\n");
519
    for (tmp=task->answerbox.answers.next; tmp != &task->answerbox.answers; tmp = tmp->next) {
520
        call = list_get_instance(tmp, call_t, link);
1735 decky 521
        printf("Callid:%p M:%d A1:%d A2:%d A3:%d Flags:%x\n",call,
1573 palkovsky 522
               IPC_GET_METHOD(call->data), IPC_GET_ARG1(call->data),
523
               IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), call->flags);
524
    }
525
 
526
    spinlock_unlock(&task->answerbox.lock);
527
    spinlock_unlock(&task->lock);
528
}
1702 cejka 529
 
1757 jermar 530
/** @}
1702 cejka 531
 */