| 1 | /*
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| 2 | * Copyright (c) 2012 Jakub Jermar
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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 genericipc
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #ifndef KERN_SYSIPC_OPS_H_
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| 36 | #define KERN_SYSIPC_OPS_H_
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| 37 |
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| 38 | #include <ipc/ipc.h>
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| 39 |
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| 40 | typedef struct {
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| 41 | /**
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| 42 | * This callback is called from request_preprocess().
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| 43 | *
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| 44 | * Context: caller
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| 45 | * Caller alive: guaranteed
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| 46 | * Races with: N/A
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| 47 | * Invoked on: all calls
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| 48 | */
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| 49 | int (* request_preprocess)(call_t *, phone_t *);
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| 50 |
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| 51 | /**
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| 52 | * This callback is called when the IPC cleanup code wins the race to
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| 53 | * forget the call.
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| 54 | *
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| 55 | * Context: caller
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| 56 | * Caller alive: guaranteed
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| 57 | * Races with: request_process(), answer_cleanup()
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| 58 | * Invoked on: all forgotten calls
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| 59 | */
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| 60 | void (* request_forget)(call_t *);
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| 61 |
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| 62 | /**
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| 63 | * This callback is called from process_request().
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| 64 | *
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| 65 | * Context: callee
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| 66 | * Caller alive: no guarantee
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| 67 | * Races with: request_forget()
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| 68 | * Invoked on: all calls
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| 69 | */
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| 70 | int (* request_process)(call_t *, answerbox_t *);
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| 71 |
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| 72 | /**
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| 73 | * This callback is called when answer_preprocess() loses the race to
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| 74 | * answer the call.
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| 75 | *
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| 76 | * Context: callee
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| 77 | * Caller alive: no guarantee
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| 78 | * Races with: request_forget()
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| 79 | * Invoked on: all forgotten calls
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| 80 | */
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| 81 | void (* answer_cleanup)(call_t *, ipc_data_t *);
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| 82 |
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| 83 | /**
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| 84 | * This callback is called when answer_preprocess() wins the race to
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| 85 | * answer the call.
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| 86 | *
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| 87 | * Context: callee
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| 88 | * Caller alive: guaranteed
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| 89 | * Races with: N/A
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| 90 | * Invoked on: all answered calls
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| 91 | */
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| 92 | int (* answer_preprocess)(call_t *, ipc_data_t *);
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| 93 |
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| 94 | /**
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| 95 | * This callback is called from process_answer().
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| 96 | *
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| 97 | * Context: caller
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| 98 | * Caller alive: guaranteed
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| 99 | * Races with: N/A
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| 100 | * Invoked on: all answered calls
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| 101 | */
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| 102 | int (* answer_process)(call_t *);
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| 103 | } sysipc_ops_t;
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| 104 |
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| 105 | extern sysipc_ops_t *sysipc_ops_get(sysarg_t);
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| 106 |
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| 107 | extern int null_request_preprocess(call_t *, phone_t *);
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| 108 | extern void null_request_forget(call_t *);
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| 109 | extern int null_request_process(call_t *, answerbox_t *);
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| 110 | extern void null_answer_cleanup(call_t *, ipc_data_t *);
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| 111 | extern int null_answer_preprocess(call_t *, ipc_data_t *);
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| 112 | extern int null_answer_process(call_t *);
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| 113 |
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| 114 | #endif
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| 115 |
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| 116 | /** @}
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| 117 | */
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