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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 | #include <ipc/ipc.h> |
29 | #include <ipc/ipc.h> |
30 | #include <libc.h> |
30 | #include <libc.h> |
31 | #include <malloc.h> |
31 | #include <malloc.h> |
32 | #include <errno.h> |
32 | #include <errno.h> |
33 | #include <libadt/list.h> |
33 | #include <libadt/list.h> |
34 | #include <stdio.h> |
34 | #include <stdio.h> |
35 | #include <unistd.h> |
35 | #include <unistd.h> |
36 | #include <futex.h> |
36 | #include <futex.h> |
37 | #include <kernel/synch/synch.h> |
37 | #include <kernel/synch/synch.h> |
38 | #include <async.h> |
38 | #include <async.h> |
39 | #include <psthread.h> |
39 | #include <psthread.h> |
40 | 40 | ||
41 | /** Structure used for keeping track of sent async msgs |
41 | /** Structure used for keeping track of sent async msgs |
42 | * and queing unsent msgs |
42 | * and queing unsent msgs |
43 | * |
43 | * |
44 | */ |
44 | */ |
45 | typedef struct { |
45 | typedef struct { |
46 | link_t list; |
46 | link_t list; |
47 | 47 | ||
48 | ipc_async_callback_t callback; |
48 | ipc_async_callback_t callback; |
49 | void *private; |
49 | void *private; |
50 | union { |
50 | union { |
51 | ipc_callid_t callid; |
51 | ipc_callid_t callid; |
52 | struct { |
52 | struct { |
53 | ipc_call_t data; |
53 | ipc_call_t data; |
54 | int phoneid; |
54 | int phoneid; |
55 | } msg; |
55 | } msg; |
56 | }u; |
56 | }u; |
57 | pstid_t ptid; /**< Thread waiting for sending this msg */ |
57 | pstid_t ptid; /**< Thread waiting for sending this msg */ |
58 | } async_call_t; |
58 | } async_call_t; |
59 | 59 | ||
60 | LIST_INITIALIZE(dispatched_calls); |
60 | LIST_INITIALIZE(dispatched_calls); |
61 | 61 | ||
62 | /* queued_calls is protcted by async_futex, because if the |
62 | /* queued_calls is protcted by async_futex, because if the |
63 | * call cannot be sent into kernel, async framework is used |
63 | * call cannot be sent into kernel, async framework is used |
64 | * automatically |
64 | * automatically |
65 | */ |
65 | */ |
66 | LIST_INITIALIZE(queued_calls); /**< List of async calls that were not accepted |
66 | LIST_INITIALIZE(queued_calls); /**< List of async calls that were not accepted |
67 | * by kernel */ |
67 | * by kernel */ |
68 | 68 | ||
69 | static atomic_t ipc_futex = FUTEX_INITIALIZER; |
69 | static atomic_t ipc_futex = FUTEX_INITIALIZER; |
70 | 70 | ||
71 | int ipc_call_sync(int phoneid, ipcarg_t method, ipcarg_t arg1, |
71 | int ipc_call_sync(int phoneid, ipcarg_t method, ipcarg_t arg1, |
72 | ipcarg_t *result) |
72 | ipcarg_t *result) |
73 | { |
73 | { |
74 | ipc_call_t resdata; |
74 | ipc_call_t resdata; |
75 | int callres; |
75 | int callres; |
76 | 76 | ||
77 | callres = __SYSCALL4(SYS_IPC_CALL_SYNC_FAST, phoneid, method, arg1, |
77 | callres = __SYSCALL4(SYS_IPC_CALL_SYNC_FAST, phoneid, method, arg1, |
78 | (sysarg_t)&resdata); |
78 | (sysarg_t)&resdata); |
79 | if (callres) |
79 | if (callres) |
80 | return callres; |
80 | return callres; |
81 | if (result) |
81 | if (result) |
82 | *result = IPC_GET_ARG1(resdata); |
82 | *result = IPC_GET_ARG1(resdata); |
83 | return IPC_GET_RETVAL(resdata); |
83 | return IPC_GET_RETVAL(resdata); |
84 | } |
84 | } |
85 | 85 | ||
86 | int ipc_call_sync_3(int phoneid, ipcarg_t method, ipcarg_t arg1, |
86 | int ipc_call_sync_3(int phoneid, ipcarg_t method, ipcarg_t arg1, |
87 | ipcarg_t arg2, ipcarg_t arg3, |
87 | ipcarg_t arg2, ipcarg_t arg3, |
88 | ipcarg_t *result1, ipcarg_t *result2, ipcarg_t *result3) |
88 | ipcarg_t *result1, ipcarg_t *result2, ipcarg_t *result3) |
89 | { |
89 | { |
90 | ipc_call_t data; |
90 | ipc_call_t data; |
91 | int callres; |
91 | int callres; |
92 | 92 | ||
93 | IPC_SET_METHOD(data, method); |
93 | IPC_SET_METHOD(data, method); |
94 | IPC_SET_ARG1(data, arg1); |
94 | IPC_SET_ARG1(data, arg1); |
95 | IPC_SET_ARG2(data, arg2); |
95 | IPC_SET_ARG2(data, arg2); |
96 | IPC_SET_ARG3(data, arg3); |
96 | IPC_SET_ARG3(data, arg3); |
97 | 97 | ||
98 | callres = __SYSCALL3(SYS_IPC_CALL_SYNC, phoneid, (sysarg_t)&data, |
98 | callres = __SYSCALL3(SYS_IPC_CALL_SYNC, phoneid, (sysarg_t)&data, |
99 | (sysarg_t)&data); |
99 | (sysarg_t)&data); |
100 | if (callres) |
100 | if (callres) |
101 | return callres; |
101 | return callres; |
102 | 102 | ||
103 | if (result1) |
103 | if (result1) |
104 | *result1 = IPC_GET_ARG1(data); |
104 | *result1 = IPC_GET_ARG1(data); |
105 | if (result2) |
105 | if (result2) |
106 | *result2 = IPC_GET_ARG2(data); |
106 | *result2 = IPC_GET_ARG2(data); |
107 | if (result3) |
107 | if (result3) |
108 | *result3 = IPC_GET_ARG3(data); |
108 | *result3 = IPC_GET_ARG3(data); |
109 | return IPC_GET_RETVAL(data); |
109 | return IPC_GET_RETVAL(data); |
110 | } |
110 | } |
111 | 111 | ||
112 | /** Syscall to send asynchronous message */ |
112 | /** Syscall to send asynchronous message */ |
113 | static ipc_callid_t _ipc_call_async(int phoneid, ipc_call_t *data) |
113 | static ipc_callid_t _ipc_call_async(int phoneid, ipc_call_t *data) |
114 | { |
114 | { |
115 | return __SYSCALL2(SYS_IPC_CALL_ASYNC, phoneid, (sysarg_t)data); |
115 | return __SYSCALL2(SYS_IPC_CALL_ASYNC, phoneid, (sysarg_t)data); |
116 | } |
116 | } |
117 | 117 | ||
118 | /** Send asynchronous message |
118 | /** Prolog to ipc_async_send functions */ |
119 | * |
- | |
120 | * - if fatal error, call callback handler with proper error code |
- | |
121 | * - if message cannot be temporarily sent, add to queue |
- | |
122 | */ |
- | |
123 | void ipc_call_async_2(int phoneid, ipcarg_t method, ipcarg_t arg1, |
- | |
124 | ipcarg_t arg2, void *private, |
- | |
125 | ipc_async_callback_t callback) |
119 | static inline async_call_t *ipc_prepare_async(void *private, ipc_async_callback_t callback) |
126 | { |
120 | { |
127 | async_call_t *call; |
121 | async_call_t *call; |
128 | ipc_callid_t callid; |
- | |
129 | 122 | ||
130 | call = malloc(sizeof(*call)); |
123 | call = malloc(sizeof(*call)); |
131 | if (!call) { |
124 | if (!call) { |
132 | if (callback) |
125 | if (callback) |
133 | callback(private, ENOMEM, NULL); |
126 | callback(private, ENOMEM, NULL); |
134 | return; |
127 | return NULL; |
135 | } |
128 | } |
136 | - | ||
137 | call->callback = callback; |
129 | call->callback = callback; |
138 | call->private = private; |
130 | call->private = private; |
139 | 131 | ||
140 | /* We need to make sure that we get callid before |
132 | return call; |
- | 133 | } |
|
- | 134 | ||
141 | * another thread accesses the queue again */ |
135 | /** Epilogue of ipc_async_send functions */ |
142 | futex_down(&ipc_futex); |
- | |
143 | callid = __SYSCALL4(SYS_IPC_CALL_ASYNC_FAST, phoneid, method, arg1, arg2); |
136 | static inline void ipc_finish_async(ipc_callid_t callid, int phoneid, async_call_t *call) |
- | 137 | { |
|
144 | if (callid == IPC_CALLRET_FATAL) { |
138 | if (callid == IPC_CALLRET_FATAL) { |
145 | futex_up(&ipc_futex); |
139 | futex_up(&ipc_futex); |
146 | /* Call asynchronous handler with error code */ |
140 | /* Call asynchronous handler with error code */ |
147 | if (callback) |
141 | if (call->callback) |
148 | callback(private, ENOENT, NULL); |
142 | call->callback(call->private, ENOENT, NULL); |
149 | free(call); |
143 | free(call); |
150 | return; |
144 | return; |
151 | } |
145 | } |
152 | 146 | ||
153 | if (callid == IPC_CALLRET_TEMPORARY) { |
147 | if (callid == IPC_CALLRET_TEMPORARY) { |
154 | futex_up(&ipc_futex); |
148 | futex_up(&ipc_futex); |
155 | 149 | ||
156 | call->u.msg.phoneid = phoneid; |
150 | call->u.msg.phoneid = phoneid; |
157 | IPC_SET_METHOD(call->u.msg.data, method); |
- | |
158 | IPC_SET_ARG1(call->u.msg.data, arg1); |
- | |
159 | IPC_SET_ARG2(call->u.msg.data, arg2); |
- | |
160 | 151 | ||
161 | call->ptid = psthread_get_id(); |
152 | call->ptid = psthread_get_id(); |
162 | futex_down(&async_futex); |
153 | futex_down(&async_futex); |
163 | list_append(&call->list, &queued_calls); |
154 | list_append(&call->list, &queued_calls); |
164 | 155 | ||
165 | psthread_schedule_next_adv(PS_TO_MANAGER); |
156 | psthread_schedule_next_adv(PS_TO_MANAGER); |
166 | /* Async futex unlocked by previous call */ |
157 | /* Async futex unlocked by previous call */ |
167 | return; |
158 | return; |
168 | } |
159 | } |
169 | call->u.callid = callid; |
160 | call->u.callid = callid; |
170 | /* Add call to list of dispatched calls */ |
161 | /* Add call to list of dispatched calls */ |
171 | list_append(&call->list, &dispatched_calls); |
162 | list_append(&call->list, &dispatched_calls); |
172 | futex_up(&ipc_futex); |
163 | futex_up(&ipc_futex); |
- | 164 | ||
- | 165 | } |
|
- | 166 | ||
- | 167 | /** Send asynchronous message |
|
- | 168 | * |
|
- | 169 | * - if fatal error, call callback handler with proper error code |
|
- | 170 | * - if message cannot be temporarily sent, add to queue |
|
- | 171 | */ |
|
- | 172 | void ipc_call_async_2(int phoneid, ipcarg_t method, ipcarg_t arg1, |
|
- | 173 | ipcarg_t arg2, void *private, |
|
- | 174 | ipc_async_callback_t callback) |
|
- | 175 | { |
|
- | 176 | async_call_t *call; |
|
- | 177 | ipc_callid_t callid; |
|
- | 178 | ||
- | 179 | call = ipc_prepare_async(private, callback); |
|
- | 180 | if (!call) |
|
- | 181 | return; |
|
- | 182 | ||
- | 183 | /* We need to make sure that we get callid before |
|
- | 184 | * another thread accesses the queue again */ |
|
- | 185 | futex_down(&ipc_futex); |
|
- | 186 | callid = __SYSCALL4(SYS_IPC_CALL_ASYNC_FAST, phoneid, method, arg1, arg2); |
|
- | 187 | ||
- | 188 | if (callid == IPC_CALLRET_TEMPORARY) { |
|
- | 189 | IPC_SET_METHOD(call->u.msg.data, method); |
|
- | 190 | IPC_SET_ARG1(call->u.msg.data, arg1); |
|
- | 191 | IPC_SET_ARG2(call->u.msg.data, arg2); |
|
- | 192 | } |
|
- | 193 | ipc_finish_async(callid, phoneid, call); |
|
- | 194 | } |
|
- | 195 | ||
- | 196 | /** Send asynchronous message |
|
- | 197 | * |
|
- | 198 | * - if fatal error, call callback handler with proper error code |
|
- | 199 | * - if message cannot be temporarily sent, add to queue |
|
- | 200 | */ |
|
- | 201 | void ipc_call_async_3(int phoneid, ipcarg_t method, ipcarg_t arg1, |
|
- | 202 | ipcarg_t arg2, ipcarg_t arg3, void *private, |
|
- | 203 | ipc_async_callback_t callback) |
|
- | 204 | { |
|
- | 205 | async_call_t *call; |
|
- | 206 | ipc_callid_t callid; |
|
- | 207 | ||
- | 208 | call = ipc_prepare_async(private, callback); |
|
- | 209 | if (!call) |
|
- | 210 | return; |
|
- | 211 | ||
- | 212 | IPC_SET_METHOD(call->u.msg.data, method); |
|
- | 213 | IPC_SET_ARG1(call->u.msg.data, arg1); |
|
- | 214 | IPC_SET_ARG2(call->u.msg.data, arg2); |
|
- | 215 | IPC_SET_ARG3(call->u.msg.data, arg3); |
|
- | 216 | /* We need to make sure that we get callid before |
|
- | 217 | * another thread accesses the queue again */ |
|
- | 218 | futex_down(&ipc_futex); |
|
- | 219 | callid = _ipc_call_async(phoneid, &call->u.msg.data); |
|
- | 220 | ||
- | 221 | ipc_finish_async(callid, phoneid, call); |
|
173 | } |
222 | } |
174 | 223 | ||
175 | 224 | ||
176 | /** Send a fast answer to a received call. |
225 | /** Send a fast answer to a received call. |
177 | * |
226 | * |
178 | * The fast answer makes use of passing retval and first two arguments in registers. |
227 | * The fast answer makes use of passing retval and first two arguments in registers. |
179 | * If you need to return more, use the ipc_answer() instead. |
228 | * If you need to return more, use the ipc_answer() instead. |
180 | * |
229 | * |
181 | * @param callid ID of the call being answered. |
230 | * @param callid ID of the call being answered. |
182 | * @param retval Return value. |
231 | * @param retval Return value. |
183 | * @param arg1 First return argument. |
232 | * @param arg1 First return argument. |
184 | * @param arg2 Second return argument. |
233 | * @param arg2 Second return argument. |
185 | * |
234 | * |
186 | * @return Zero on success or a value from @ref errno.h on failure. |
235 | * @return Zero on success or a value from @ref errno.h on failure. |
187 | */ |
236 | */ |
188 | ipcarg_t ipc_answer_fast(ipc_callid_t callid, ipcarg_t retval, ipcarg_t arg1, |
237 | ipcarg_t ipc_answer_fast(ipc_callid_t callid, ipcarg_t retval, ipcarg_t arg1, |
189 | ipcarg_t arg2) |
238 | ipcarg_t arg2) |
190 | { |
239 | { |
191 | return __SYSCALL4(SYS_IPC_ANSWER_FAST, callid, retval, arg1, arg2); |
240 | return __SYSCALL4(SYS_IPC_ANSWER_FAST, callid, retval, arg1, arg2); |
192 | } |
241 | } |
193 | 242 | ||
194 | /** Send a full answer to a received call. |
243 | /** Send a full answer to a received call. |
195 | * |
244 | * |
196 | * @param callid ID of the call being answered. |
245 | * @param callid ID of the call being answered. |
197 | * @param call Call data. Must be already initialized by the responder. |
246 | * @param call Call data. Must be already initialized by the responder. |
198 | * |
247 | * |
199 | * @return Zero on success or a value from @ref errno.h on failure. |
248 | * @return Zero on success or a value from @ref errno.h on failure. |
200 | */ |
249 | */ |
201 | ipcarg_t ipc_answer(ipc_callid_t callid, ipc_call_t *call) |
250 | ipcarg_t ipc_answer(ipc_callid_t callid, ipc_call_t *call) |
202 | { |
251 | { |
203 | return __SYSCALL2(SYS_IPC_ANSWER, callid, (sysarg_t) call); |
252 | return __SYSCALL2(SYS_IPC_ANSWER, callid, (sysarg_t) call); |
204 | } |
253 | } |
205 | 254 | ||
206 | 255 | ||
207 | /** Try to dispatch queed calls from async queue */ |
256 | /** Try to dispatch queed calls from async queue */ |
208 | static void try_dispatch_queued_calls(void) |
257 | static void try_dispatch_queued_calls(void) |
209 | { |
258 | { |
210 | async_call_t *call; |
259 | async_call_t *call; |
211 | ipc_callid_t callid; |
260 | ipc_callid_t callid; |
212 | 261 | ||
213 | /* TODO: integrate intelligently ipc_futex, so that it |
262 | /* TODO: integrate intelligently ipc_futex, so that it |
214 | * is locked during ipc_call_async, until it is added |
263 | * is locked during ipc_call_async, until it is added |
215 | * to dispatched_calls |
264 | * to dispatched_calls |
216 | */ |
265 | */ |
217 | futex_down(&async_futex); |
266 | futex_down(&async_futex); |
218 | while (!list_empty(&queued_calls)) { |
267 | while (!list_empty(&queued_calls)) { |
219 | call = list_get_instance(queued_calls.next, async_call_t, |
268 | call = list_get_instance(queued_calls.next, async_call_t, |
220 | list); |
269 | list); |
221 | 270 | ||
222 | callid = _ipc_call_async(call->u.msg.phoneid, |
271 | callid = _ipc_call_async(call->u.msg.phoneid, |
223 | &call->u.msg.data); |
272 | &call->u.msg.data); |
224 | if (callid == IPC_CALLRET_TEMPORARY) { |
273 | if (callid == IPC_CALLRET_TEMPORARY) { |
225 | break; |
274 | break; |
226 | } |
275 | } |
227 | list_remove(&call->list); |
276 | list_remove(&call->list); |
228 | 277 | ||
229 | futex_up(&async_futex); |
278 | futex_up(&async_futex); |
230 | psthread_add_ready(call->ptid); |
279 | psthread_add_ready(call->ptid); |
231 | 280 | ||
232 | if (callid == IPC_CALLRET_FATAL) { |
281 | if (callid == IPC_CALLRET_FATAL) { |
233 | if (call->callback) |
282 | if (call->callback) |
234 | call->callback(call->private, ENOENT, NULL); |
283 | call->callback(call->private, ENOENT, NULL); |
235 | free(call); |
284 | free(call); |
236 | } else { |
285 | } else { |
237 | call->u.callid = callid; |
286 | call->u.callid = callid; |
238 | futex_down(&ipc_futex); |
287 | futex_down(&ipc_futex); |
239 | list_append(&call->list, &dispatched_calls); |
288 | list_append(&call->list, &dispatched_calls); |
240 | futex_up(&ipc_futex); |
289 | futex_up(&ipc_futex); |
241 | } |
290 | } |
242 | futex_down(&async_futex); |
291 | futex_down(&async_futex); |
243 | } |
292 | } |
244 | futex_up(&async_futex); |
293 | futex_up(&async_futex); |
245 | } |
294 | } |
246 | 295 | ||
247 | /** Handle received answer |
296 | /** Handle received answer |
248 | * |
297 | * |
249 | * TODO: Make it use hash table |
298 | * TODO: Make it use hash table |
250 | * |
299 | * |
251 | * @param callid Callid (with first bit set) of the answered call |
300 | * @param callid Callid (with first bit set) of the answered call |
252 | */ |
301 | */ |
253 | static void handle_answer(ipc_callid_t callid, ipc_call_t *data) |
302 | static void handle_answer(ipc_callid_t callid, ipc_call_t *data) |
254 | { |
303 | { |
255 | link_t *item; |
304 | link_t *item; |
256 | async_call_t *call; |
305 | async_call_t *call; |
257 | 306 | ||
258 | callid &= ~IPC_CALLID_ANSWERED; |
307 | callid &= ~IPC_CALLID_ANSWERED; |
259 | 308 | ||
260 | futex_down(&ipc_futex); |
309 | futex_down(&ipc_futex); |
261 | for (item = dispatched_calls.next; item != &dispatched_calls; |
310 | for (item = dispatched_calls.next; item != &dispatched_calls; |
262 | item = item->next) { |
311 | item = item->next) { |
263 | call = list_get_instance(item, async_call_t, list); |
312 | call = list_get_instance(item, async_call_t, list); |
264 | if (call->u.callid == callid) { |
313 | if (call->u.callid == callid) { |
265 | list_remove(&call->list); |
314 | list_remove(&call->list); |
266 | futex_up(&ipc_futex); |
315 | futex_up(&ipc_futex); |
267 | if (call->callback) |
316 | if (call->callback) |
268 | call->callback(call->private, |
317 | call->callback(call->private, |
269 | IPC_GET_RETVAL(*data), |
318 | IPC_GET_RETVAL(*data), |
270 | data); |
319 | data); |
271 | free(call); |
320 | free(call); |
272 | return; |
321 | return; |
273 | } |
322 | } |
274 | } |
323 | } |
275 | futex_up(&ipc_futex); |
324 | futex_up(&ipc_futex); |
276 | printf("Received unidentified answer: %P!!!\n", callid); |
325 | printf("Received unidentified answer: %P!!!\n", callid); |
277 | } |
326 | } |
278 | 327 | ||
279 | 328 | ||
280 | /** One cycle of ipc wait for call call |
329 | /** One cycle of ipc wait for call call |
281 | * |
330 | * |
282 | * - dispatch ASYNC reoutines in the background |
331 | * - dispatch ASYNC reoutines in the background |
283 | * @param call Space where the message is stored |
332 | * @param call Space where the message is stored |
284 | * @param usec Timeout in microseconds |
333 | * @param usec Timeout in microseconds |
285 | * @param flags Flags passed to SYS_IPC_WAIT (blocking, nonblocking) |
334 | * @param flags Flags passed to SYS_IPC_WAIT (blocking, nonblocking) |
286 | * @return Callid of the answer. |
335 | * @return Callid of the answer. |
287 | */ |
336 | */ |
288 | ipc_callid_t ipc_wait_cycle(ipc_call_t *call, uint32_t usec, int flags) |
337 | ipc_callid_t ipc_wait_cycle(ipc_call_t *call, uint32_t usec, int flags) |
289 | { |
338 | { |
290 | ipc_callid_t callid; |
339 | ipc_callid_t callid; |
291 | 340 | ||
292 | callid = __SYSCALL3(SYS_IPC_WAIT, (sysarg_t) call, usec, flags); |
341 | callid = __SYSCALL3(SYS_IPC_WAIT, (sysarg_t) call, usec, flags); |
293 | /* Handle received answers */ |
342 | /* Handle received answers */ |
294 | if (callid & IPC_CALLID_ANSWERED) { |
343 | if (callid & IPC_CALLID_ANSWERED) { |
295 | handle_answer(callid, call); |
344 | handle_answer(callid, call); |
296 | try_dispatch_queued_calls(); |
345 | try_dispatch_queued_calls(); |
297 | } |
346 | } |
298 | 347 | ||
299 | return callid; |
348 | return callid; |
300 | } |
349 | } |
301 | 350 | ||
302 | /** Wait some time for an IPC call. |
351 | /** Wait some time for an IPC call. |
303 | * |
352 | * |
304 | * - dispatch ASYNC reoutines in the background |
353 | * - dispatch ASYNC reoutines in the background |
305 | * @param call Space where the message is stored |
354 | * @param call Space where the message is stored |
306 | * @param usec Timeout in microseconds. |
355 | * @param usec Timeout in microseconds. |
307 | * @return Callid of the answer. |
356 | * @return Callid of the answer. |
308 | */ |
357 | */ |
309 | ipc_callid_t ipc_wait_for_call_timeout(ipc_call_t *call, uint32_t usec) |
358 | ipc_callid_t ipc_wait_for_call_timeout(ipc_call_t *call, uint32_t usec) |
310 | { |
359 | { |
311 | ipc_callid_t callid; |
360 | ipc_callid_t callid; |
312 | 361 | ||
313 | do { |
362 | do { |
314 | callid = ipc_wait_cycle(call, usec, SYNCH_BLOCKING); |
363 | callid = ipc_wait_cycle(call, usec, SYNCH_BLOCKING); |
315 | } while (callid & IPC_CALLID_ANSWERED); |
364 | } while (callid & IPC_CALLID_ANSWERED); |
316 | 365 | ||
317 | return callid; |
366 | return callid; |
318 | } |
367 | } |
319 | 368 | ||
320 | /** Check if there is an IPC call waiting to be picked up. |
369 | /** Check if there is an IPC call waiting to be picked up. |
321 | * |
370 | * |
322 | * - dispatch ASYNC reoutines in the background |
371 | * - dispatch ASYNC reoutines in the background |
323 | * @param call Space where the message is stored |
372 | * @param call Space where the message is stored |
324 | * @return Callid of the answer. |
373 | * @return Callid of the answer. |
325 | */ |
374 | */ |
326 | ipc_callid_t ipc_trywait_for_call(ipc_call_t *call) |
375 | ipc_callid_t ipc_trywait_for_call(ipc_call_t *call) |
327 | { |
376 | { |
328 | ipc_callid_t callid; |
377 | ipc_callid_t callid; |
329 | 378 | ||
330 | do { |
379 | do { |
331 | callid = ipc_wait_cycle(call, SYNCH_NO_TIMEOUT, SYNCH_NON_BLOCKING); |
380 | callid = ipc_wait_cycle(call, SYNCH_NO_TIMEOUT, SYNCH_NON_BLOCKING); |
332 | } while (callid & IPC_CALLID_ANSWERED); |
381 | } while (callid & IPC_CALLID_ANSWERED); |
333 | 382 | ||
334 | return callid; |
383 | return callid; |
335 | } |
384 | } |
336 | 385 | ||
337 | /** Ask destination to do a callback connection |
386 | /** Ask destination to do a callback connection |
338 | * |
387 | * |
339 | * @return 0 - OK, error code |
388 | * @return 0 - OK, error code |
340 | */ |
389 | */ |
341 | int ipc_connect_to_me(int phoneid, int arg1, int arg2, ipcarg_t *phone) |
390 | int ipc_connect_to_me(int phoneid, int arg1, int arg2, ipcarg_t *phone) |
342 | { |
391 | { |
343 | return ipc_call_sync_3(phoneid, IPC_M_CONNECT_TO_ME, arg1, |
392 | return ipc_call_sync_3(phoneid, IPC_M_CONNECT_TO_ME, arg1, |
344 | arg2, 0, 0, 0, phone); |
393 | arg2, 0, 0, 0, phone); |
345 | } |
394 | } |
346 | 395 | ||
347 | /** Ask through phone for a new connection to some service |
396 | /** Ask through phone for a new connection to some service |
348 | * |
397 | * |
349 | * @return new phoneid - OK, error code |
398 | * @return new phoneid - OK, error code |
350 | */ |
399 | */ |
351 | int ipc_connect_me_to(int phoneid, int arg1, int arg2) |
400 | int ipc_connect_me_to(int phoneid, int arg1, int arg2) |
352 | { |
401 | { |
353 | ipcarg_t newphid; |
402 | ipcarg_t newphid; |
354 | int res; |
403 | int res; |
355 | 404 | ||
356 | res = ipc_call_sync_3(phoneid, IPC_M_CONNECT_ME_TO, arg1, |
405 | res = ipc_call_sync_3(phoneid, IPC_M_CONNECT_ME_TO, arg1, |
357 | arg2, 0, 0, 0, &newphid); |
406 | arg2, 0, 0, 0, &newphid); |
358 | if (res) |
407 | if (res) |
359 | return res; |
408 | return res; |
360 | return newphid; |
409 | return newphid; |
361 | } |
410 | } |
362 | 411 | ||
363 | /* Hang up specified phone */ |
412 | /* Hang up specified phone */ |
364 | int ipc_hangup(int phoneid) |
413 | int ipc_hangup(int phoneid) |
365 | { |
414 | { |
366 | return __SYSCALL1(SYS_IPC_HANGUP, phoneid); |
415 | return __SYSCALL1(SYS_IPC_HANGUP, phoneid); |
367 | } |
416 | } |
368 | 417 | ||
369 | int ipc_register_irq(int irq, irq_code_t *ucode) |
418 | int ipc_register_irq(int irq, irq_code_t *ucode) |
370 | { |
419 | { |
371 | return __SYSCALL2(SYS_IPC_REGISTER_IRQ, irq, (sysarg_t) ucode); |
420 | return __SYSCALL2(SYS_IPC_REGISTER_IRQ, irq, (sysarg_t) ucode); |
372 | } |
421 | } |
373 | 422 | ||
374 | int ipc_unregister_irq(int irq) |
423 | int ipc_unregister_irq(int irq) |
375 | { |
424 | { |
376 | return __SYSCALL1(SYS_IPC_UNREGISTER_IRQ, irq); |
425 | return __SYSCALL1(SYS_IPC_UNREGISTER_IRQ, irq); |
377 | } |
426 | } |
378 | 427 | ||
379 | int ipc_forward_fast(ipc_callid_t callid, int phoneid, int method, ipcarg_t arg1) |
428 | int ipc_forward_fast(ipc_callid_t callid, int phoneid, int method, ipcarg_t arg1) |
380 | { |
429 | { |
381 | return __SYSCALL4(SYS_IPC_FORWARD_FAST, callid, phoneid, method, arg1); |
430 | return __SYSCALL4(SYS_IPC_FORWARD_FAST, callid, phoneid, method, arg1); |
382 | } |
431 | } |
383 | 432 | ||
384 | 433 | ||
385 | /** Open shared memory connection over specified phoneid |
434 | /** Open shared memory connection over specified phoneid |
386 | * |
435 | * |
387 | * |
436 | * |
388 | * Allocate as_area, notify the other side about our intention |
437 | * Allocate as_area, notify the other side about our intention |
389 | * to open the connection |
438 | * to open the connection |
390 | * |
439 | * |
391 | * @return Connection id identifying this connection |
440 | * @return Connection id identifying this connection |
392 | */ |
441 | */ |
393 | //int ipc_dgr_open(int pohoneid, size_t bufsize) |
442 | //int ipc_dgr_open(int pohoneid, size_t bufsize) |
394 | //{ |
443 | //{ |
395 | /* Find new file descriptor in local descriptor table */ |
444 | /* Find new file descriptor in local descriptor table */ |
396 | /* Create AS_area, initialize structures */ |
445 | /* Create AS_area, initialize structures */ |
397 | /* Send AS to other side, handle error states */ |
446 | /* Send AS to other side, handle error states */ |
398 | 447 | ||
399 | //} |
448 | //} |
400 | /* |
449 | /* |
401 | void ipc_dgr_close(int cid) |
450 | void ipc_dgr_close(int cid) |
402 | { |
451 | { |
403 | } |
452 | } |
404 | 453 | ||
405 | void * ipc_dgr_alloc(int cid, size_t size) |
454 | void * ipc_dgr_alloc(int cid, size_t size) |
406 | { |
455 | { |
407 | } |
456 | } |
408 | 457 | ||
409 | void ipc_dgr_free(int cid, void *area) |
458 | void ipc_dgr_free(int cid, void *area) |
410 | { |
459 | { |
411 | 460 | ||
412 | } |
461 | } |
413 | 462 | ||
414 | int ipc_dgr_send(int cid, void *area) |
463 | int ipc_dgr_send(int cid, void *area) |
415 | { |
464 | { |
416 | } |
465 | } |
417 | 466 | ||
418 | 467 | ||
419 | int ipc_dgr_send_data(int cid, void *data, size_t size) |
468 | int ipc_dgr_send_data(int cid, void *data, size_t size) |
420 | { |
469 | { |
421 | } |
470 | } |
422 | 471 | ||
423 | */ |
472 | */ |
424 | 473 |