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| Rev | Author | Line No. | Line |
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| 954 | 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 | #include <ipc.h> |
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| 30 | #include <libc.h> |
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| 31 | |||
| 966 | palkovsky | 32 | int ipc_call_sync(int phoneid, sysarg_t method, sysarg_t arg1, |
| 33 | sysarg_t *result) |
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| 954 | palkovsky | 34 | { |
| 966 | palkovsky | 35 | ipc_data_t resdata; |
| 36 | int callres; |
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| 37 | |||
| 38 | callres = __SYSCALL4(SYS_IPC_CALL_SYNC, phoneid, method, arg1, |
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| 39 | (sysarg_t)&resdata); |
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| 40 | if (callres) |
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| 41 | return callres; |
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| 42 | if (result) |
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| 43 | *result = IPC_GET_ARG1(resdata); |
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| 44 | return IPC_GET_RETVAL(resdata); |
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| 954 | palkovsky | 45 | } |
| 46 | |||
| 966 | palkovsky | 47 | int ipc_call_sync_3(int phoneid, sysarg_t method, sysarg_t arg1, |
| 48 | sysarg_t arg2, sysarg_t arg3, |
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| 49 | sysarg_t *result1, sysarg_t *result2, sysarg_t *result3) |
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| 954 | palkovsky | 50 | { |
| 966 | palkovsky | 51 | ipc_data_t data; |
| 52 | int callres; |
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| 53 | |||
| 54 | IPC_SET_METHOD(data, method); |
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| 55 | IPC_SET_ARG1(data, arg1); |
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| 56 | IPC_SET_ARG2(data, arg2); |
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| 57 | IPC_SET_ARG3(data, arg3); |
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| 58 | |||
| 59 | callres = __SYSCALL2(SYS_IPC_CALL_SYNC_MEDIUM, phoneid, (sysarg_t)&data); |
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| 60 | if (callres) |
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| 61 | return callres; |
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| 62 | |||
| 63 | if (result1) |
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| 64 | *result1 = IPC_GET_ARG1(data); |
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| 65 | if (result2) |
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| 66 | *result2 = IPC_GET_ARG2(data); |
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| 67 | if (result3) |
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| 68 | *result3 = IPC_GET_ARG3(data); |
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| 69 | return IPC_GET_RETVAL(data); |
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| 70 | } |
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| 71 | |||
| 72 | /** Send asynchronous message |
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| 73 | * |
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| 74 | * - if fatal error, call callback handler with proper error code |
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| 75 | * - if message cannot be temporarily sent, add to queue |
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| 76 | */ |
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| 77 | void ipc_call_async_2(int phoneid, sysarg_t method, sysarg_t arg1, |
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| 78 | sysarg_t arg2, |
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| 79 | ipc_async_callback_t callback) |
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| 80 | { |
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| 81 | ipc_callid_t callid; |
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| 82 | ipc_data_t data; /* Data storage for saving calls */ |
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| 83 | |||
| 84 | callid = __SYSCALL4(SYS_IPC_CALL_ASYNC, phoneid, method, arg1, arg2); |
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| 85 | if (callid == IPC_CALLRET_FATAL) { |
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| 86 | /* Call asynchronous handler with error code */ |
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| 87 | IPC_SET_RETVAL(data, IPC_CALLRET_FATAL); |
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| 88 | callback(&data); |
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| 89 | return; |
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| 90 | } |
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| 91 | if (callid == IPC_CALLRET_TEMPORARY) { |
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| 92 | /* Add asynchronous call to queue of non-dispatched async calls */ |
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| 93 | IPC_SET_METHOD(data, method); |
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| 94 | IPC_SET_ARG1(data, arg1); |
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| 95 | IPC_SET_ARG2(data, arg2); |
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| 96 | |||
| 97 | return; |
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| 98 | } |
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| 99 | /* Add callid to list of dispatched calls */ |
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| 954 | palkovsky | 100 | |
| 101 | } |
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| 102 | |||
| 966 | palkovsky | 103 | |
| 104 | /** Send answer to a received call */ |
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| 105 | void ipc_answer(ipc_callid_t callid, sysarg_t retval, sysarg_t arg1, |
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| 106 | sysarg_t arg2) |
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| 954 | palkovsky | 107 | { |
| 966 | palkovsky | 108 | __SYSCALL4(SYS_IPC_ANSWER, callid, retval, arg1, arg2); |
| 954 | palkovsky | 109 | } |
| 110 | |||
| 966 | palkovsky | 111 | |
| 954 | palkovsky | 112 | /** Call syscall function sys_ipc_wait_for_call */ |
| 113 | static inline ipc_callid_t _ipc_wait_for_call(ipc_data_t *data, int flags) |
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| 114 | { |
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| 115 | return __SYSCALL2(SYS_IPC_WAIT, (sysarg_t)data, flags); |
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| 116 | } |
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| 117 | |||
| 118 | /** Wait for IPC call and return |
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| 119 | * |
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| 120 | * - dispatch ASYNC reoutines in the background |
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| 121 | */ |
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| 122 | int ipc_wait_for_call(ipc_data_t *data, int flags) |
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| 123 | { |
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| 124 | ipc_callid_t callid; |
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| 125 | |||
| 966 | palkovsky | 126 | do { |
| 127 | /* Try to dispatch non-dispatched async calls */ |
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| 128 | callid = _ipc_wait_for_call(data, flags); |
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| 129 | if (callid & IPC_CALLID_ANSWERED) { |
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| 130 | /* TODO: Call async answer handler */ |
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| 131 | } |
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| 132 | } while (callid & IPC_CALLID_ANSWERED); |
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| 954 | palkovsky | 133 | return callid; |
| 134 | } |