Rev 965 | Rev 1005 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 955 | palkovsky | 1 | /* |
| 2 | * Copyright (C) 2006 Ondrej 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 | |||
| 29 | #ifndef __IPC_H__ |
||
| 30 | #define __IPC_H__ |
||
| 31 | |||
| 965 | palkovsky | 32 | /* Length of data being transfered with IPC call */ |
| 33 | /* - the uspace may not be able to utilize full length */ |
||
| 34 | #define IPC_CALL_LEN 4 |
||
| 955 | palkovsky | 35 | |
| 998 | palkovsky | 36 | /** Maximum active async calls per thread */ |
| 37 | #define IPC_MAX_ASYNC_CALLS 4 |
||
| 38 | |||
| 955 | palkovsky | 39 | /* Flags for calls */ |
| 965 | palkovsky | 40 | #define IPC_CALL_ANSWERED 1 /**< This is answer to a call */ |
| 41 | #define IPC_CALL_STATIC_ALLOC 2 /**< This call will not be freed on error */ |
||
| 42 | |||
| 955 | palkovsky | 43 | /* Flags for ipc_wait_for_call */ |
| 965 | palkovsky | 44 | #define IPC_WAIT_NONBLOCKING 1 |
| 955 | palkovsky | 45 | |
| 965 | palkovsky | 46 | /* Flags of callid */ |
| 47 | #define IPC_CALLID_ANSWERED 1 |
||
| 48 | |||
| 49 | /* Return values from IPC_ASYNC */ |
||
| 50 | #define IPC_CALLRET_FATAL -1 |
||
| 51 | #define IPC_CALLRET_TEMPORARY -2 |
||
| 52 | |||
| 53 | |||
| 54 | /* Macros for manipulating calling data */ |
||
| 55 | #define IPC_SET_RETVAL(data, retval) ((data)[0] = (retval)) |
||
| 56 | #define IPC_SET_METHOD(data, val) ((data)[0] = (val)) |
||
| 57 | #define IPC_SET_ARG1(data, val) ((data)[1] = (val)) |
||
| 58 | #define IPC_SET_ARG2(data, val) ((data)[2] = (val)) |
||
| 59 | #define IPC_SET_ARG3(data, val) ((data)[3] = (val)) |
||
| 60 | |||
| 61 | #define IPC_GET_METHOD(data) ((data)[0]) |
||
| 62 | #define IPC_GET_RETVAL(data) ((data)[0]) |
||
| 63 | |||
| 64 | #define IPC_GET_ARG1(data) ((data)[1]) |
||
| 65 | #define IPC_GET_ARG2(data) ((data)[2]) |
||
| 66 | #define IPC_GET_ARG3(data) ((data)[3]) |
||
| 67 | |||
| 68 | /* Well known phone descriptors */ |
||
| 69 | #define PHONE_NS 0 |
||
| 70 | |||
| 955 | palkovsky | 71 | #ifdef KERNEL |
| 72 | |||
| 965 | palkovsky | 73 | #include <synch/mutex.h> |
| 74 | #include <synch/condvar.h> |
||
| 955 | palkovsky | 75 | #include <adt/list.h> |
| 76 | |||
| 77 | #define IPC_MAX_PHONES 16 |
||
| 78 | |||
| 79 | |||
| 80 | typedef struct answerbox answerbox_t; |
||
| 81 | |||
| 82 | typedef struct { |
||
| 83 | link_t list; |
||
| 84 | answerbox_t *callerbox; |
||
| 85 | int flags; |
||
| 86 | __native data[IPC_CALL_LEN]; |
||
| 87 | } call_t; |
||
| 88 | |||
| 89 | struct answerbox { |
||
| 90 | SPINLOCK_DECLARE(lock); |
||
| 91 | |||
| 965 | palkovsky | 92 | mutex_t mutex; |
| 93 | condvar_t cv; |
||
| 955 | palkovsky | 94 | |
| 95 | link_t connected_phones; /**< Phones connected to this answerbox */ |
||
| 96 | link_t calls; /**< Received calls */ |
||
| 97 | link_t dispatched_calls; /* Should be hash table in the future */ |
||
| 98 | |||
| 99 | link_t answers; /**< Answered calls */ |
||
| 100 | }; |
||
| 101 | |||
| 102 | typedef struct { |
||
| 103 | SPINLOCK_DECLARE(lock); |
||
| 104 | link_t list; |
||
| 105 | answerbox_t *callee; |
||
| 106 | } phone_t; |
||
| 107 | |||
| 108 | extern void ipc_init(void); |
||
| 109 | extern call_t * ipc_wait_for_call(answerbox_t *box, int flags); |
||
| 110 | extern void ipc_answer(answerbox_t *box, call_t *request); |
||
| 111 | extern void ipc_call(phone_t *phone, call_t *request); |
||
| 959 | palkovsky | 112 | extern void ipc_call_sync(phone_t *phone, call_t *request); |
| 955 | palkovsky | 113 | extern void ipc_phone_destroy(phone_t *phone); |
| 114 | extern void ipc_phone_init(phone_t *phone, answerbox_t *box); |
||
| 115 | extern void ipc_call_free(call_t *call); |
||
| 116 | extern call_t * ipc_call_alloc(void); |
||
| 965 | palkovsky | 117 | extern void ipc_answerbox_init(answerbox_t *box); |
| 118 | extern void ipc_phone_init(phone_t *phone, answerbox_t *box); |
||
| 119 | extern void ipc_call_init(call_t *call); |
||
| 955 | palkovsky | 120 | |
| 965 | palkovsky | 121 | extern answerbox_t *ipc_phone_0; |
| 955 | palkovsky | 122 | |
| 123 | #endif |
||
| 124 | |||
| 125 | #endif |