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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 | /** Prolog to ipc_async_send functions */ |
118 | /** Prolog to ipc_async_send functions */ |
119 | static inline async_call_t *ipc_prepare_async(void *private, ipc_async_callback_t callback) |
119 | static inline async_call_t *ipc_prepare_async(void *private, ipc_async_callback_t callback) |
120 | { |
120 | { |
121 | async_call_t *call; |
121 | async_call_t *call; |
122 | 122 | ||
123 | call = malloc(sizeof(*call)); |
123 | call = malloc(sizeof(*call)); |
124 | if (!call) { |
124 | if (!call) { |
125 | if (callback) |
125 | if (callback) |
126 | callback(private, ENOMEM, NULL); |
126 | callback(private, ENOMEM, NULL); |
127 | return NULL; |
127 | return NULL; |
128 | } |
128 | } |
129 | call->callback = callback; |
129 | call->callback = callback; |
130 | call->private = private; |
130 | call->private = private; |
131 | 131 | ||
132 | return call; |
132 | return call; |
133 | } |
133 | } |
134 | 134 | ||
135 | /** Epilogue of ipc_async_send functions */ |
135 | /** Epilogue of ipc_async_send functions */ |
136 | static inline void ipc_finish_async(ipc_callid_t callid, int phoneid, async_call_t *call) |
136 | static inline void ipc_finish_async(ipc_callid_t callid, int phoneid, |
- | 137 | async_call_t *call, int can_preempt) |
|
137 | { |
138 | { |
138 | if (callid == IPC_CALLRET_FATAL) { |
139 | if (callid == IPC_CALLRET_FATAL) { |
139 | futex_up(&ipc_futex); |
140 | futex_up(&ipc_futex); |
140 | /* Call asynchronous handler with error code */ |
141 | /* Call asynchronous handler with error code */ |
141 | if (call->callback) |
142 | if (call->callback) |
142 | call->callback(call->private, ENOENT, NULL); |
143 | call->callback(call->private, ENOENT, NULL); |
143 | free(call); |
144 | free(call); |
144 | return; |
145 | return; |
145 | } |
146 | } |
146 | 147 | ||
147 | if (callid == IPC_CALLRET_TEMPORARY) { |
148 | if (callid == IPC_CALLRET_TEMPORARY) { |
148 | futex_up(&ipc_futex); |
149 | futex_up(&ipc_futex); |
149 | 150 | ||
150 | call->u.msg.phoneid = phoneid; |
151 | call->u.msg.phoneid = phoneid; |
151 | 152 | ||
152 | call->ptid = psthread_get_id(); |
- | |
153 | futex_down(&async_futex); |
153 | futex_down(&async_futex); |
154 | list_append(&call->list, &queued_calls); |
154 | list_append(&call->list, &queued_calls); |
155 | 155 | ||
- | 156 | if (can_preempt) { |
|
- | 157 | call->ptid = psthread_get_id(); |
|
156 | psthread_schedule_next_adv(PS_TO_MANAGER); |
158 | psthread_schedule_next_adv(PS_TO_MANAGER); |
157 | /* Async futex unlocked by previous call */ |
159 | /* Async futex unlocked by previous call */ |
- | 160 | } else { |
|
- | 161 | call->ptid = 0; |
|
- | 162 | futex_up(&async_futex); |
|
- | 163 | } |
|
158 | return; |
164 | return; |
159 | } |
165 | } |
160 | call->u.callid = callid; |
166 | call->u.callid = callid; |
161 | /* Add call to list of dispatched calls */ |
167 | /* Add call to list of dispatched calls */ |
162 | list_append(&call->list, &dispatched_calls); |
168 | list_append(&call->list, &dispatched_calls); |
163 | futex_up(&ipc_futex); |
169 | futex_up(&ipc_futex); |
164 | 170 | ||
165 | } |
171 | } |
166 | 172 | ||
167 | /** Send asynchronous message |
173 | /** Send asynchronous message |
168 | * |
174 | * |
169 | * - if fatal error, call callback handler with proper error code |
175 | * - if fatal error, call callback handler with proper error code |
170 | * - if message cannot be temporarily sent, add to queue |
176 | * - if message cannot be temporarily sent, add to queue |
171 | */ |
177 | */ |
172 | void ipc_call_async_2(int phoneid, ipcarg_t method, ipcarg_t arg1, |
178 | void ipc_call_async_2(int phoneid, ipcarg_t method, ipcarg_t arg1, |
173 | ipcarg_t arg2, void *private, |
179 | ipcarg_t arg2, void *private, |
174 | ipc_async_callback_t callback) |
180 | ipc_async_callback_t callback, int can_preempt) |
175 | { |
181 | { |
176 | async_call_t *call; |
182 | async_call_t *call; |
177 | ipc_callid_t callid; |
183 | ipc_callid_t callid; |
178 | 184 | ||
179 | call = ipc_prepare_async(private, callback); |
185 | call = ipc_prepare_async(private, callback); |
180 | if (!call) |
186 | if (!call) |
181 | return; |
187 | return; |
182 | 188 | ||
183 | /* We need to make sure that we get callid before |
189 | /* We need to make sure that we get callid before |
184 | * another thread accesses the queue again */ |
190 | * another thread accesses the queue again */ |
185 | futex_down(&ipc_futex); |
191 | futex_down(&ipc_futex); |
186 | callid = __SYSCALL4(SYS_IPC_CALL_ASYNC_FAST, phoneid, method, arg1, arg2); |
192 | callid = __SYSCALL4(SYS_IPC_CALL_ASYNC_FAST, phoneid, method, arg1, arg2); |
187 | 193 | ||
188 | if (callid == IPC_CALLRET_TEMPORARY) { |
194 | if (callid == IPC_CALLRET_TEMPORARY) { |
189 | IPC_SET_METHOD(call->u.msg.data, method); |
195 | IPC_SET_METHOD(call->u.msg.data, method); |
190 | IPC_SET_ARG1(call->u.msg.data, arg1); |
196 | IPC_SET_ARG1(call->u.msg.data, arg1); |
191 | IPC_SET_ARG2(call->u.msg.data, arg2); |
197 | IPC_SET_ARG2(call->u.msg.data, arg2); |
192 | } |
198 | } |
193 | ipc_finish_async(callid, phoneid, call); |
199 | ipc_finish_async(callid, phoneid, call, can_preempt); |
194 | } |
200 | } |
195 | 201 | ||
196 | /** Send asynchronous message |
202 | /** Send asynchronous message |
197 | * |
203 | * |
198 | * - if fatal error, call callback handler with proper error code |
204 | * - if fatal error, call callback handler with proper error code |
199 | * - if message cannot be temporarily sent, add to queue |
205 | * - if message cannot be temporarily sent, add to queue |
200 | */ |
206 | */ |
201 | void ipc_call_async_3(int phoneid, ipcarg_t method, ipcarg_t arg1, |
207 | void ipc_call_async_3(int phoneid, ipcarg_t method, ipcarg_t arg1, |
202 | ipcarg_t arg2, ipcarg_t arg3, void *private, |
208 | ipcarg_t arg2, ipcarg_t arg3, void *private, |
203 | ipc_async_callback_t callback) |
209 | ipc_async_callback_t callback, int can_preempt) |
204 | { |
210 | { |
205 | async_call_t *call; |
211 | async_call_t *call; |
206 | ipc_callid_t callid; |
212 | ipc_callid_t callid; |
207 | 213 | ||
208 | call = ipc_prepare_async(private, callback); |
214 | call = ipc_prepare_async(private, callback); |
209 | if (!call) |
215 | if (!call) |
210 | return; |
216 | return; |
211 | 217 | ||
212 | IPC_SET_METHOD(call->u.msg.data, method); |
218 | IPC_SET_METHOD(call->u.msg.data, method); |
213 | IPC_SET_ARG1(call->u.msg.data, arg1); |
219 | IPC_SET_ARG1(call->u.msg.data, arg1); |
214 | IPC_SET_ARG2(call->u.msg.data, arg2); |
220 | IPC_SET_ARG2(call->u.msg.data, arg2); |
215 | IPC_SET_ARG3(call->u.msg.data, arg3); |
221 | IPC_SET_ARG3(call->u.msg.data, arg3); |
216 | /* We need to make sure that we get callid before |
222 | /* We need to make sure that we get callid before |
217 | * another thread accesses the queue again */ |
223 | * another thread accesses the queue again */ |
218 | futex_down(&ipc_futex); |
224 | futex_down(&ipc_futex); |
219 | callid = _ipc_call_async(phoneid, &call->u.msg.data); |
225 | callid = _ipc_call_async(phoneid, &call->u.msg.data); |
220 | 226 | ||
221 | ipc_finish_async(callid, phoneid, call); |
227 | ipc_finish_async(callid, phoneid, call, can_preempt); |
222 | } |
228 | } |
223 | 229 | ||
224 | 230 | ||
225 | /** Send a fast answer to a received call. |
231 | /** Send a fast answer to a received call. |
226 | * |
232 | * |
227 | * The fast answer makes use of passing retval and first two arguments in registers. |
233 | * The fast answer makes use of passing retval and first two arguments in registers. |
228 | * If you need to return more, use the ipc_answer() instead. |
234 | * If you need to return more, use the ipc_answer() instead. |
229 | * |
235 | * |
230 | * @param callid ID of the call being answered. |
236 | * @param callid ID of the call being answered. |
231 | * @param retval Return value. |
237 | * @param retval Return value. |
232 | * @param arg1 First return argument. |
238 | * @param arg1 First return argument. |
233 | * @param arg2 Second return argument. |
239 | * @param arg2 Second return argument. |
234 | * |
240 | * |
235 | * @return Zero on success or a value from @ref errno.h on failure. |
241 | * @return Zero on success or a value from @ref errno.h on failure. |
236 | */ |
242 | */ |
237 | ipcarg_t ipc_answer_fast(ipc_callid_t callid, ipcarg_t retval, ipcarg_t arg1, |
243 | ipcarg_t ipc_answer_fast(ipc_callid_t callid, ipcarg_t retval, ipcarg_t arg1, |
238 | ipcarg_t arg2) |
244 | ipcarg_t arg2) |
239 | { |
245 | { |
240 | return __SYSCALL4(SYS_IPC_ANSWER_FAST, callid, retval, arg1, arg2); |
246 | return __SYSCALL4(SYS_IPC_ANSWER_FAST, callid, retval, arg1, arg2); |
241 | } |
247 | } |
242 | 248 | ||
243 | /** Send a full answer to a received call. |
249 | /** Send a full answer to a received call. |
244 | * |
250 | * |
245 | * @param callid ID of the call being answered. |
251 | * @param callid ID of the call being answered. |
246 | * @param call Call data. Must be already initialized by the responder. |
252 | * @param call Call data. Must be already initialized by the responder. |
247 | * |
253 | * |
248 | * @return Zero on success or a value from @ref errno.h on failure. |
254 | * @return Zero on success or a value from @ref errno.h on failure. |
249 | */ |
255 | */ |
250 | ipcarg_t ipc_answer(ipc_callid_t callid, ipc_call_t *call) |
256 | ipcarg_t ipc_answer(ipc_callid_t callid, ipc_call_t *call) |
251 | { |
257 | { |
252 | return __SYSCALL2(SYS_IPC_ANSWER, callid, (sysarg_t) call); |
258 | return __SYSCALL2(SYS_IPC_ANSWER, callid, (sysarg_t) call); |
253 | } |
259 | } |
254 | 260 | ||
255 | 261 | ||
256 | /** Try to dispatch queed calls from async queue */ |
262 | /** Try to dispatch queed calls from async queue */ |
257 | static void try_dispatch_queued_calls(void) |
263 | static void try_dispatch_queued_calls(void) |
258 | { |
264 | { |
259 | async_call_t *call; |
265 | async_call_t *call; |
260 | ipc_callid_t callid; |
266 | ipc_callid_t callid; |
261 | 267 | ||
262 | /* TODO: integrate intelligently ipc_futex, so that it |
268 | /* TODO: integrate intelligently ipc_futex, so that it |
263 | * is locked during ipc_call_async, until it is added |
269 | * is locked during ipc_call_async, until it is added |
264 | * to dispatched_calls |
270 | * to dispatched_calls |
265 | */ |
271 | */ |
266 | futex_down(&async_futex); |
272 | futex_down(&async_futex); |
267 | while (!list_empty(&queued_calls)) { |
273 | while (!list_empty(&queued_calls)) { |
268 | call = list_get_instance(queued_calls.next, async_call_t, |
274 | call = list_get_instance(queued_calls.next, async_call_t, |
269 | list); |
275 | list); |
270 | 276 | ||
271 | callid = _ipc_call_async(call->u.msg.phoneid, |
277 | callid = _ipc_call_async(call->u.msg.phoneid, |
272 | &call->u.msg.data); |
278 | &call->u.msg.data); |
273 | if (callid == IPC_CALLRET_TEMPORARY) { |
279 | if (callid == IPC_CALLRET_TEMPORARY) { |
274 | break; |
280 | break; |
275 | } |
281 | } |
276 | list_remove(&call->list); |
282 | list_remove(&call->list); |
277 | 283 | ||
278 | futex_up(&async_futex); |
284 | futex_up(&async_futex); |
- | 285 | if (call->ptid) |
|
279 | psthread_add_ready(call->ptid); |
286 | psthread_add_ready(call->ptid); |
280 | 287 | ||
281 | if (callid == IPC_CALLRET_FATAL) { |
288 | if (callid == IPC_CALLRET_FATAL) { |
282 | if (call->callback) |
289 | if (call->callback) |
283 | call->callback(call->private, ENOENT, NULL); |
290 | call->callback(call->private, ENOENT, NULL); |
284 | free(call); |
291 | free(call); |
285 | } else { |
292 | } else { |
286 | call->u.callid = callid; |
293 | call->u.callid = callid; |
287 | futex_down(&ipc_futex); |
294 | futex_down(&ipc_futex); |
288 | list_append(&call->list, &dispatched_calls); |
295 | list_append(&call->list, &dispatched_calls); |
289 | futex_up(&ipc_futex); |
296 | futex_up(&ipc_futex); |
290 | } |
297 | } |
291 | futex_down(&async_futex); |
298 | futex_down(&async_futex); |
292 | } |
299 | } |
293 | futex_up(&async_futex); |
300 | futex_up(&async_futex); |
294 | } |
301 | } |
295 | 302 | ||
296 | /** Handle received answer |
303 | /** Handle received answer |
297 | * |
304 | * |
298 | * TODO: Make it use hash table |
305 | * TODO: Make it use hash table |
299 | * |
306 | * |
300 | * @param callid Callid (with first bit set) of the answered call |
307 | * @param callid Callid (with first bit set) of the answered call |
301 | */ |
308 | */ |
302 | static void handle_answer(ipc_callid_t callid, ipc_call_t *data) |
309 | static void handle_answer(ipc_callid_t callid, ipc_call_t *data) |
303 | { |
310 | { |
304 | link_t *item; |
311 | link_t *item; |
305 | async_call_t *call; |
312 | async_call_t *call; |
306 | 313 | ||
307 | callid &= ~IPC_CALLID_ANSWERED; |
314 | callid &= ~IPC_CALLID_ANSWERED; |
308 | 315 | ||
309 | futex_down(&ipc_futex); |
316 | futex_down(&ipc_futex); |
310 | for (item = dispatched_calls.next; item != &dispatched_calls; |
317 | for (item = dispatched_calls.next; item != &dispatched_calls; |
311 | item = item->next) { |
318 | item = item->next) { |
312 | call = list_get_instance(item, async_call_t, list); |
319 | call = list_get_instance(item, async_call_t, list); |
313 | if (call->u.callid == callid) { |
320 | if (call->u.callid == callid) { |
314 | list_remove(&call->list); |
321 | list_remove(&call->list); |
315 | futex_up(&ipc_futex); |
322 | futex_up(&ipc_futex); |
316 | if (call->callback) |
323 | if (call->callback) |
317 | call->callback(call->private, |
324 | call->callback(call->private, |
318 | IPC_GET_RETVAL(*data), |
325 | IPC_GET_RETVAL(*data), |
319 | data); |
326 | data); |
320 | free(call); |
327 | free(call); |
321 | return; |
328 | return; |
322 | } |
329 | } |
323 | } |
330 | } |
324 | futex_up(&ipc_futex); |
331 | futex_up(&ipc_futex); |
325 | printf("Received unidentified answer: %P!!!\n", callid); |
332 | printf("Received unidentified answer: %P!!!\n", callid); |
326 | } |
333 | } |
327 | 334 | ||
328 | 335 | ||
329 | /** One cycle of ipc wait for call call |
336 | /** One cycle of ipc wait for call call |
330 | * |
337 | * |
331 | * - dispatch ASYNC reoutines in the background |
338 | * - dispatch ASYNC reoutines in the background |
332 | * @param call Space where the message is stored |
339 | * @param call Space where the message is stored |
333 | * @param usec Timeout in microseconds |
340 | * @param usec Timeout in microseconds |
334 | * @param flags Flags passed to SYS_IPC_WAIT (blocking, nonblocking) |
341 | * @param flags Flags passed to SYS_IPC_WAIT (blocking, nonblocking) |
335 | * @return Callid of the answer. |
342 | * @return Callid of the answer. |
336 | */ |
343 | */ |
337 | ipc_callid_t ipc_wait_cycle(ipc_call_t *call, uint32_t usec, int flags) |
344 | ipc_callid_t ipc_wait_cycle(ipc_call_t *call, uint32_t usec, int flags) |
338 | { |
345 | { |
339 | ipc_callid_t callid; |
346 | ipc_callid_t callid; |
340 | 347 | ||
341 | callid = __SYSCALL3(SYS_IPC_WAIT, (sysarg_t) call, usec, flags); |
348 | callid = __SYSCALL3(SYS_IPC_WAIT, (sysarg_t) call, usec, flags); |
342 | /* Handle received answers */ |
349 | /* Handle received answers */ |
343 | if (callid & IPC_CALLID_ANSWERED) { |
350 | if (callid & IPC_CALLID_ANSWERED) { |
344 | handle_answer(callid, call); |
351 | handle_answer(callid, call); |
345 | try_dispatch_queued_calls(); |
352 | try_dispatch_queued_calls(); |
346 | } |
353 | } |
347 | 354 | ||
348 | return callid; |
355 | return callid; |
349 | } |
356 | } |
350 | 357 | ||
351 | /** Wait some time for an IPC call. |
358 | /** Wait some time for an IPC call. |
352 | * |
359 | * |
353 | * - dispatch ASYNC reoutines in the background |
360 | * - dispatch ASYNC reoutines in the background |
354 | * @param call Space where the message is stored |
361 | * @param call Space where the message is stored |
355 | * @param usec Timeout in microseconds. |
362 | * @param usec Timeout in microseconds. |
356 | * @return Callid of the answer. |
363 | * @return Callid of the answer. |
357 | */ |
364 | */ |
358 | ipc_callid_t ipc_wait_for_call_timeout(ipc_call_t *call, uint32_t usec) |
365 | ipc_callid_t ipc_wait_for_call_timeout(ipc_call_t *call, uint32_t usec) |
359 | { |
366 | { |
360 | ipc_callid_t callid; |
367 | ipc_callid_t callid; |
361 | 368 | ||
362 | do { |
369 | do { |
363 | callid = ipc_wait_cycle(call, usec, SYNCH_FLAGS_NONE); |
370 | callid = ipc_wait_cycle(call, usec, SYNCH_FLAGS_NONE); |
364 | } while (callid & IPC_CALLID_ANSWERED); |
371 | } while (callid & IPC_CALLID_ANSWERED); |
365 | 372 | ||
366 | return callid; |
373 | return callid; |
367 | } |
374 | } |
368 | 375 | ||
369 | /** Check if there is an IPC call waiting to be picked up. |
376 | /** Check if there is an IPC call waiting to be picked up. |
370 | * |
377 | * |
371 | * - dispatch ASYNC reoutines in the background |
378 | * - dispatch ASYNC reoutines in the background |
372 | * @param call Space where the message is stored |
379 | * @param call Space where the message is stored |
373 | * @return Callid of the answer. |
380 | * @return Callid of the answer. |
374 | */ |
381 | */ |
375 | ipc_callid_t ipc_trywait_for_call(ipc_call_t *call) |
382 | ipc_callid_t ipc_trywait_for_call(ipc_call_t *call) |
376 | { |
383 | { |
377 | ipc_callid_t callid; |
384 | ipc_callid_t callid; |
378 | 385 | ||
379 | do { |
386 | do { |
380 | callid = ipc_wait_cycle(call, SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NON_BLOCKING); |
387 | callid = ipc_wait_cycle(call, SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NON_BLOCKING); |
381 | } while (callid & IPC_CALLID_ANSWERED); |
388 | } while (callid & IPC_CALLID_ANSWERED); |
382 | 389 | ||
383 | return callid; |
390 | return callid; |
384 | } |
391 | } |
385 | 392 | ||
386 | /** Ask destination to do a callback connection |
393 | /** Ask destination to do a callback connection |
387 | * |
394 | * |
388 | * @return 0 - OK, error code |
395 | * @return 0 - OK, error code |
389 | */ |
396 | */ |
390 | int ipc_connect_to_me(int phoneid, int arg1, int arg2, ipcarg_t *phone) |
397 | int ipc_connect_to_me(int phoneid, int arg1, int arg2, ipcarg_t *phone) |
391 | { |
398 | { |
392 | return ipc_call_sync_3(phoneid, IPC_M_CONNECT_TO_ME, arg1, |
399 | return ipc_call_sync_3(phoneid, IPC_M_CONNECT_TO_ME, arg1, |
393 | arg2, 0, 0, 0, phone); |
400 | arg2, 0, 0, 0, phone); |
394 | } |
401 | } |
395 | 402 | ||
396 | /** Ask through phone for a new connection to some service |
403 | /** Ask through phone for a new connection to some service |
397 | * |
404 | * |
398 | * @return new phoneid - OK, error code |
405 | * @return new phoneid - OK, error code |
399 | */ |
406 | */ |
400 | int ipc_connect_me_to(int phoneid, int arg1, int arg2) |
407 | int ipc_connect_me_to(int phoneid, int arg1, int arg2) |
401 | { |
408 | { |
402 | ipcarg_t newphid; |
409 | ipcarg_t newphid; |
403 | int res; |
410 | int res; |
404 | 411 | ||
405 | res = ipc_call_sync_3(phoneid, IPC_M_CONNECT_ME_TO, arg1, |
412 | res = ipc_call_sync_3(phoneid, IPC_M_CONNECT_ME_TO, arg1, |
406 | arg2, 0, 0, 0, &newphid); |
413 | arg2, 0, 0, 0, &newphid); |
407 | if (res) |
414 | if (res) |
408 | return res; |
415 | return res; |
409 | return newphid; |
416 | return newphid; |
410 | } |
417 | } |
411 | 418 | ||
412 | /* Hang up specified phone */ |
419 | /* Hang up specified phone */ |
413 | int ipc_hangup(int phoneid) |
420 | int ipc_hangup(int phoneid) |
414 | { |
421 | { |
415 | return __SYSCALL1(SYS_IPC_HANGUP, phoneid); |
422 | return __SYSCALL1(SYS_IPC_HANGUP, phoneid); |
416 | } |
423 | } |
417 | 424 | ||
418 | int ipc_register_irq(int irq, irq_code_t *ucode) |
425 | int ipc_register_irq(int irq, irq_code_t *ucode) |
419 | { |
426 | { |
420 | return __SYSCALL2(SYS_IPC_REGISTER_IRQ, irq, (sysarg_t) ucode); |
427 | return __SYSCALL2(SYS_IPC_REGISTER_IRQ, irq, (sysarg_t) ucode); |
421 | } |
428 | } |
422 | 429 | ||
423 | int ipc_unregister_irq(int irq) |
430 | int ipc_unregister_irq(int irq) |
424 | { |
431 | { |
425 | return __SYSCALL1(SYS_IPC_UNREGISTER_IRQ, irq); |
432 | return __SYSCALL1(SYS_IPC_UNREGISTER_IRQ, irq); |
426 | } |
433 | } |
427 | 434 | ||
428 | int ipc_forward_fast(ipc_callid_t callid, int phoneid, int method, ipcarg_t arg1) |
435 | int ipc_forward_fast(ipc_callid_t callid, int phoneid, int method, ipcarg_t arg1) |
429 | { |
436 | { |
430 | return __SYSCALL4(SYS_IPC_FORWARD_FAST, callid, phoneid, method, arg1); |
437 | return __SYSCALL4(SYS_IPC_FORWARD_FAST, callid, phoneid, method, arg1); |
431 | } |
438 | } |
432 | 439 | ||
433 | - | ||
434 | /** Open shared memory connection over specified phoneid |
- | |
435 | * |
- | |
436 | * |
- | |
437 | * Allocate as_area, notify the other side about our intention |
- | |
438 | * to open the connection |
- | |
439 | * |
- | |
440 | * @return Connection id identifying this connection |
440 | /* Primitive functions for simple communication */ |
441 | */ |
- | |
442 | //int ipc_dgr_open(int pohoneid, size_t bufsize) |
441 | void send_call_3(int phoneid, ipcarg_t method, ipcarg_t arg1, |
443 | //{ |
- | |
444 | /* Find new file descriptor in local descriptor table */ |
- | |
445 | /* Create AS_area, initialize structures */ |
- | |
446 | /* Send AS to other side, handle error states */ |
- | |
447 | - | ||
448 | //} |
- | |
449 | /* |
- | |
450 | void ipc_dgr_close(int cid) |
- | |
451 | { |
- | |
452 | } |
- | |
453 | - | ||
454 | void * ipc_dgr_alloc(int cid, size_t size) |
442 | ipcarg_t arg2, ipcarg_t arg3) |
455 | { |
443 | { |
- | 444 | ipc_call_async_3(phoneid, method, arg1, arg2, arg3, NULL, NULL, 1); |
|
456 | } |
445 | } |
457 | 446 | ||
458 | void ipc_dgr_free(int cid, void *area) |
447 | void send_call_2(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2) |
459 | { |
448 | { |
460 | - | ||
- | 449 | ipc_call_async_2(phoneid, method, arg1, arg2, NULL, NULL, 1); |
|
461 | } |
450 | } |
462 | 451 | ||
- | 452 | void nsend_call_3(int phoneid, ipcarg_t method, ipcarg_t arg1, |
|
463 | int ipc_dgr_send(int cid, void *area) |
453 | ipcarg_t arg2, ipcarg_t arg3) |
464 | { |
454 | { |
- | 455 | ipc_call_async_3(phoneid, method, arg1, arg2, arg3, NULL, NULL, 0); |
|
465 | } |
456 | } |
466 | 457 | ||
467 | - | ||
468 | int ipc_dgr_send_data(int cid, void *data, size_t size) |
458 | void nsend_call_2(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2) |
469 | { |
459 | { |
- | 460 | ipc_call_async_2(phoneid, method, arg1, arg2, NULL, NULL, 0); |
|
470 | } |
461 | } |
471 | 462 | ||
472 | */ |
- | |
473 | 463 |