Rev 959 | Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 955 | palkovsky | 1 | /* |
| 2 | * Copyright (C) 2006 Ondrej Palkovsky |
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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 | |||
| 29 | #ifndef __IPC_H__ |
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| 30 | #define __IPC_H__ |
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| 31 | |||
| 32 | #define IPC_CALL_LEN 2 |
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| 33 | |||
| 34 | /* Flags for calls */ |
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| 35 | #define IPC_CALL_ANSWERED 1 |
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| 36 | /* Flags for ipc_wait_for_call */ |
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| 37 | #define IPC_WAIT_NONBLOCKING 1 |
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| 38 | |||
| 39 | #ifdef KERNEL |
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| 40 | |||
| 41 | #include <synch/waitq.h> |
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| 42 | #include <synch/spinlock.h> |
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| 43 | #include <adt/list.h> |
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| 44 | |||
| 45 | #define IPC_MAX_PHONES 16 |
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| 46 | |||
| 47 | |||
| 48 | typedef struct answerbox answerbox_t; |
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| 49 | |||
| 50 | typedef struct { |
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| 51 | link_t list; |
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| 52 | answerbox_t *callerbox; |
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| 53 | int flags; |
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| 54 | __native data[IPC_CALL_LEN]; |
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| 55 | } call_t; |
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| 56 | |||
| 57 | struct answerbox { |
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| 58 | SPINLOCK_DECLARE(lock); |
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| 59 | |||
| 60 | waitq_t wq; |
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| 61 | |||
| 62 | link_t connected_phones; /**< Phones connected to this answerbox */ |
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| 63 | link_t calls; /**< Received calls */ |
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| 64 | link_t dispatched_calls; /* Should be hash table in the future */ |
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| 65 | |||
| 66 | link_t answers; /**< Answered calls */ |
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| 67 | }; |
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| 68 | |||
| 69 | typedef struct { |
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| 70 | SPINLOCK_DECLARE(lock); |
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| 71 | link_t list; |
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| 72 | answerbox_t *callee; |
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| 73 | } phone_t; |
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| 74 | |||
| 75 | extern void ipc_create_phonecompany(void); |
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| 76 | extern void ipc_init(void); |
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| 77 | extern call_t * ipc_wait_for_call(answerbox_t *box, int flags); |
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| 78 | extern void ipc_answer(answerbox_t *box, call_t *request); |
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| 79 | extern void ipc_call(phone_t *phone, call_t *request); |
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| 80 | extern void ipc_phone_destroy(phone_t *phone); |
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| 81 | extern void ipc_phone_init(phone_t *phone, answerbox_t *box); |
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| 82 | extern void ipc_call_free(call_t *call); |
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| 83 | extern call_t * ipc_call_alloc(void); |
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| 84 | void ipc_answerbox_init(answerbox_t *box); |
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| 85 | void ipc_phone_init(phone_t *phone, answerbox_t *box); |
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| 86 | |||
| 87 | extern answerbox_t *ipc_central_box; |
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| 88 | |||
| 89 | #endif |
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| 90 | |||
| 91 | #endif |