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| 1 | /* |
1 | /* |
| 2 | * Copyright (C) 2006 Ondrej Palkovsky |
2 | * Copyright (C) 2006 Ondrej Palkovsky |
| 3 | * All rights reserved. |
3 | * All rights reserved. |
| 4 | * |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
7 | * are met: |
| 8 | * |
8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | #ifndef __IPC_H__ |
29 | #ifndef __IPC_H__ |
| 30 | #define __IPC_H__ |
30 | #define __IPC_H__ |
| 31 | 31 | ||
| - | 32 | /* Length of data being transfered with IPC call */ |
|
| - | 33 | /* - the uspace may not be able to utilize full length */ |
|
| 32 | #define IPC_CALL_LEN 2 |
34 | #define IPC_CALL_LEN 4 |
| 33 | 35 | ||
| 34 | /* Flags for calls */ |
36 | /* Flags for calls */ |
| 35 | #define IPC_CALL_ANSWERED 1 |
37 | #define IPC_CALL_ANSWERED 1 /**< This is answer to a call */ |
| - | 38 | #define IPC_CALL_STATIC_ALLOC 2 /**< This call will not be freed on error */ |
|
| - | 39 | ||
| 36 | /* Flags for ipc_wait_for_call */ |
40 | /* Flags for ipc_wait_for_call */ |
| 37 | #define IPC_WAIT_NONBLOCKING 1 |
41 | #define IPC_WAIT_NONBLOCKING 1 |
| - | 42 | ||
| - | 43 | /* Flags of callid */ |
|
| - | 44 | #define IPC_CALLID_ANSWERED 1 |
|
| - | 45 | ||
| - | 46 | /* Return values from IPC_ASYNC */ |
|
| - | 47 | #define IPC_CALLRET_FATAL -1 |
|
| - | 48 | #define IPC_CALLRET_TEMPORARY -2 |
|
| - | 49 | ||
| - | 50 | ||
| - | 51 | /* Macros for manipulating calling data */ |
|
| - | 52 | #define IPC_SET_RETVAL(data, retval) ((data)[0] = (retval)) |
|
| - | 53 | #define IPC_SET_METHOD(data, val) ((data)[0] = (val)) |
|
| - | 54 | #define IPC_SET_ARG1(data, val) ((data)[1] = (val)) |
|
| - | 55 | #define IPC_SET_ARG2(data, val) ((data)[2] = (val)) |
|
| - | 56 | #define IPC_SET_ARG3(data, val) ((data)[3] = (val)) |
|
| - | 57 | ||
| - | 58 | #define IPC_GET_METHOD(data) ((data)[0]) |
|
| - | 59 | #define IPC_GET_RETVAL(data) ((data)[0]) |
|
| - | 60 | ||
| - | 61 | #define IPC_GET_ARG1(data) ((data)[1]) |
|
| - | 62 | #define IPC_GET_ARG2(data) ((data)[2]) |
|
| - | 63 | #define IPC_GET_ARG3(data) ((data)[3]) |
|
| - | 64 | ||
| - | 65 | /* Well known phone descriptors */ |
|
| - | 66 | #define PHONE_NS 0 |
|
| 38 | 67 | ||
| 39 | #ifdef KERNEL |
68 | #ifdef KERNEL |
| 40 | 69 | ||
| 41 | #include <synch/waitq.h> |
70 | #include <synch/mutex.h> |
| 42 | #include <synch/spinlock.h> |
71 | #include <synch/condvar.h> |
| 43 | #include <adt/list.h> |
72 | #include <adt/list.h> |
| 44 | 73 | ||
| 45 | #define IPC_MAX_PHONES 16 |
74 | #define IPC_MAX_PHONES 16 |
| 46 | 75 | ||
| 47 | 76 | ||
| 48 | typedef struct answerbox answerbox_t; |
77 | typedef struct answerbox answerbox_t; |
| 49 | 78 | ||
| 50 | typedef struct { |
79 | typedef struct { |
| 51 | link_t list; |
80 | link_t list; |
| 52 | answerbox_t *callerbox; |
81 | answerbox_t *callerbox; |
| 53 | int flags; |
82 | int flags; |
| 54 | __native data[IPC_CALL_LEN]; |
83 | __native data[IPC_CALL_LEN]; |
| 55 | } call_t; |
84 | } call_t; |
| 56 | 85 | ||
| 57 | struct answerbox { |
86 | struct answerbox { |
| 58 | SPINLOCK_DECLARE(lock); |
87 | SPINLOCK_DECLARE(lock); |
| 59 | 88 | ||
| - | 89 | mutex_t mutex; |
|
| 60 | waitq_t wq; |
90 | condvar_t cv; |
| 61 | 91 | ||
| 62 | link_t connected_phones; /**< Phones connected to this answerbox */ |
92 | link_t connected_phones; /**< Phones connected to this answerbox */ |
| 63 | link_t calls; /**< Received calls */ |
93 | link_t calls; /**< Received calls */ |
| 64 | link_t dispatched_calls; /* Should be hash table in the future */ |
94 | link_t dispatched_calls; /* Should be hash table in the future */ |
| 65 | 95 | ||
| 66 | link_t answers; /**< Answered calls */ |
96 | link_t answers; /**< Answered calls */ |
| 67 | }; |
97 | }; |
| 68 | 98 | ||
| 69 | typedef struct { |
99 | typedef struct { |
| 70 | SPINLOCK_DECLARE(lock); |
100 | SPINLOCK_DECLARE(lock); |
| 71 | link_t list; |
101 | link_t list; |
| 72 | answerbox_t *callee; |
102 | answerbox_t *callee; |
| 73 | } phone_t; |
103 | } phone_t; |
| 74 | 104 | ||
| 75 | extern void ipc_create_phonecompany(void); |
- | |
| 76 | extern void ipc_init(void); |
105 | extern void ipc_init(void); |
| 77 | extern call_t * ipc_wait_for_call(answerbox_t *box, int flags); |
106 | extern call_t * ipc_wait_for_call(answerbox_t *box, int flags); |
| 78 | extern void ipc_answer(answerbox_t *box, call_t *request); |
107 | extern void ipc_answer(answerbox_t *box, call_t *request); |
| 79 | extern void ipc_call(phone_t *phone, call_t *request); |
108 | extern void ipc_call(phone_t *phone, call_t *request); |
| 80 | extern void ipc_call_sync(phone_t *phone, call_t *request); |
109 | extern void ipc_call_sync(phone_t *phone, call_t *request); |
| 81 | extern void ipc_phone_destroy(phone_t *phone); |
110 | extern void ipc_phone_destroy(phone_t *phone); |
| 82 | extern void ipc_phone_init(phone_t *phone, answerbox_t *box); |
111 | extern void ipc_phone_init(phone_t *phone, answerbox_t *box); |
| 83 | extern void ipc_call_free(call_t *call); |
112 | extern void ipc_call_free(call_t *call); |
| 84 | extern call_t * ipc_call_alloc(void); |
113 | extern call_t * ipc_call_alloc(void); |
| 85 | void ipc_answerbox_init(answerbox_t *box); |
114 | extern void ipc_answerbox_init(answerbox_t *box); |
| 86 | void ipc_phone_init(phone_t *phone, answerbox_t *box); |
115 | extern void ipc_phone_init(phone_t *phone, answerbox_t *box); |
| - | 116 | extern void ipc_call_init(call_t *call); |
|
| 87 | 117 | ||
| 88 | extern answerbox_t *ipc_central_box; |
118 | extern answerbox_t *ipc_phone_0; |
| 89 | 119 | ||
| 90 | #endif |
120 | #endif |
| 91 | 121 | ||
| 92 | #endif |
122 | #endif |
| 93 | 123 | ||