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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 | /** @addtogroup genericipc |
29 | /** @addtogroup genericipc |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <arch.h> |
35 | #include <arch.h> |
36 | #include <proc/task.h> |
36 | #include <proc/task.h> |
37 | #include <proc/thread.h> |
37 | #include <proc/thread.h> |
38 | #include <errno.h> |
38 | #include <errno.h> |
39 | #include <memstr.h> |
39 | #include <memstr.h> |
40 | #include <debug.h> |
40 | #include <debug.h> |
41 | #include <ipc/ipc.h> |
41 | #include <ipc/ipc.h> |
42 | #include <ipc/sysipc.h> |
42 | #include <ipc/sysipc.h> |
43 | #include <ipc/irq.h> |
43 | #include <ipc/irq.h> |
44 | #include <ipc/ipcrsc.h> |
44 | #include <ipc/ipcrsc.h> |
45 | #include <arch/interrupt.h> |
45 | #include <arch/interrupt.h> |
46 | #include <print.h> |
46 | #include <print.h> |
47 | #include <syscall/copy.h> |
47 | #include <syscall/copy.h> |
48 | #include <security/cap.h> |
48 | #include <security/cap.h> |
49 | #include <mm/as.h> |
49 | #include <mm/as.h> |
50 | #include <print.h> |
50 | #include <print.h> |
51 | 51 | ||
52 | #define GET_CHECK_PHONE(phone,phoneid,err) { \ |
52 | #define GET_CHECK_PHONE(phone,phoneid,err) { \ |
53 | if (phoneid > IPC_MAX_PHONES) { err; } \ |
53 | if (phoneid > IPC_MAX_PHONES) { err; } \ |
54 | phone = &TASK->phones[phoneid]; \ |
54 | phone = &TASK->phones[phoneid]; \ |
55 | } |
55 | } |
56 | 56 | ||
57 | #define STRUCT_TO_USPACE(dst,src) copy_to_uspace(dst,src,sizeof(*(src))) |
57 | #define STRUCT_TO_USPACE(dst,src) copy_to_uspace(dst,src,sizeof(*(src))) |
58 | 58 | ||
59 | /** Return true if the method is a system method */ |
59 | /** Return true if the method is a system method */ |
60 | static inline int is_system_method(unative_t method) |
60 | static inline int is_system_method(unative_t method) |
61 | { |
61 | { |
62 | if (method <= IPC_M_LAST_SYSTEM) |
62 | if (method <= IPC_M_LAST_SYSTEM) |
63 | return 1; |
63 | return 1; |
64 | return 0; |
64 | return 0; |
65 | } |
65 | } |
66 | 66 | ||
67 | /** Return true if the message with this method is forwardable |
67 | /** Return true if the message with this method is forwardable |
68 | * |
68 | * |
69 | * - some system messages may be forwarded, for some of them |
69 | * - some system messages may be forwarded, for some of them |
70 | * it is useless |
70 | * it is useless |
71 | */ |
71 | */ |
72 | static inline int is_forwardable(unative_t method) |
72 | static inline int is_forwardable(unative_t method) |
73 | { |
73 | { |
74 | if (method == IPC_M_PHONE_HUNGUP || method == IPC_M_AS_AREA_SEND \ |
74 | if (method == IPC_M_PHONE_HUNGUP || method == IPC_M_AS_AREA_SEND \ |
75 | || method == IPC_M_AS_AREA_RECV) |
75 | || method == IPC_M_AS_AREA_RECV) |
76 | return 0; /* This message is meant only for the receiver */ |
76 | return 0; /* This message is meant only for the receiver */ |
77 | return 1; |
77 | return 1; |
78 | } |
78 | } |
79 | 79 | ||
80 | /****************************************************/ |
80 | /****************************************************/ |
81 | /* Functions that preprocess answer before sending |
81 | /* Functions that preprocess answer before sending |
82 | * it to the recepient |
82 | * it to the recepient |
83 | */ |
83 | */ |
84 | 84 | ||
85 | /** Return true if the caller (ipc_answer) should save |
85 | /** Return true if the caller (ipc_answer) should save |
86 | * the old call contents for answer_preprocess |
86 | * the old call contents for answer_preprocess |
87 | */ |
87 | */ |
88 | static inline int answer_need_old(call_t *call) |
88 | static inline int answer_need_old(call_t *call) |
89 | { |
89 | { |
90 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
90 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
91 | return 1; |
91 | return 1; |
92 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO) |
92 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO) |
93 | return 1; |
93 | return 1; |
94 | if (IPC_GET_METHOD(call->data) == IPC_M_AS_AREA_SEND) |
94 | if (IPC_GET_METHOD(call->data) == IPC_M_AS_AREA_SEND) |
95 | return 1; |
95 | return 1; |
96 | if (IPC_GET_METHOD(call->data) == IPC_M_AS_AREA_RECV) |
96 | if (IPC_GET_METHOD(call->data) == IPC_M_AS_AREA_RECV) |
97 | return 1; |
97 | return 1; |
98 | return 0; |
98 | return 0; |
99 | } |
99 | } |
100 | 100 | ||
101 | /** Interpret process answer as control information |
101 | /** Interpret process answer as control information |
102 | * |
102 | * |
103 | * This function is called directly after sys_ipc_answer |
103 | * This function is called directly after sys_ipc_answer |
104 | */ |
104 | */ |
105 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
105 | static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata) |
106 | { |
106 | { |
107 | int phoneid; |
107 | int phoneid; |
108 | 108 | ||
109 | if (IPC_GET_RETVAL(answer->data) == EHANGUP) { |
109 | if (IPC_GET_RETVAL(answer->data) == EHANGUP) { |
110 | /* In case of forward, hangup the forwared phone, |
110 | /* In case of forward, hangup the forwared phone, |
111 | * not the originator |
111 | * not the originator |
112 | */ |
112 | */ |
113 | spinlock_lock(&answer->data.phone->lock); |
113 | spinlock_lock(&answer->data.phone->lock); |
114 | spinlock_lock(&TASK->answerbox.lock); |
114 | spinlock_lock(&TASK->answerbox.lock); |
115 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
115 | if (answer->data.phone->state == IPC_PHONE_CONNECTED) { |
116 | list_remove(&answer->data.phone->link); |
116 | list_remove(&answer->data.phone->link); |
117 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
117 | answer->data.phone->state = IPC_PHONE_SLAMMED; |
118 | } |
118 | } |
119 | spinlock_unlock(&TASK->answerbox.lock); |
119 | spinlock_unlock(&TASK->answerbox.lock); |
120 | spinlock_unlock(&answer->data.phone->lock); |
120 | spinlock_unlock(&answer->data.phone->lock); |
121 | } |
121 | } |
122 | 122 | ||
123 | if (!olddata) |
123 | if (!olddata) |
124 | return 0; |
124 | return 0; |
125 | 125 | ||
126 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
126 | if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
127 | phoneid = IPC_GET_ARG3(*olddata); |
127 | phoneid = IPC_GET_ARG3(*olddata); |
128 | if (IPC_GET_RETVAL(answer->data)) { |
128 | if (IPC_GET_RETVAL(answer->data)) { |
129 | /* The connection was not accepted */ |
129 | /* The connection was not accepted */ |
130 | phone_dealloc(phoneid); |
130 | phone_dealloc(phoneid); |
131 | } else { |
131 | } else { |
132 | /* The connection was accepted */ |
132 | /* The connection was accepted */ |
133 | phone_connect(phoneid,&answer->sender->answerbox); |
133 | phone_connect(phoneid,&answer->sender->answerbox); |
134 | /* Set 'phone identification' as arg3 of response */ |
134 | /* Set 'phone identification' as arg3 of response */ |
135 | IPC_SET_ARG3(answer->data, (unative_t)&TASK->phones[phoneid]); |
135 | IPC_SET_ARG3(answer->data, (unative_t)&TASK->phones[phoneid]); |
136 | } |
136 | } |
137 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
137 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
138 | /* If the users accepted call, connect */ |
138 | /* If the users accepted call, connect */ |
139 | if (!IPC_GET_RETVAL(answer->data)) { |
139 | if (!IPC_GET_RETVAL(answer->data)) { |
140 | ipc_phone_connect((phone_t *)IPC_GET_ARG3(*olddata), |
140 | ipc_phone_connect((phone_t *)IPC_GET_ARG3(*olddata), |
141 | &TASK->answerbox); |
141 | &TASK->answerbox); |
142 | } |
142 | } |
143 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_SEND) { |
143 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_SEND) { |
144 | if (!IPC_GET_RETVAL(answer->data)) { /* Accepted, handle as_area receipt */ |
144 | if (!IPC_GET_RETVAL(answer->data)) { /* Accepted, handle as_area receipt */ |
145 | ipl_t ipl; |
145 | ipl_t ipl; |
146 | int rc; |
146 | int rc; |
147 | as_t *as; |
147 | as_t *as; |
148 | 148 | ||
149 | ipl = interrupts_disable(); |
149 | ipl = interrupts_disable(); |
150 | spinlock_lock(&answer->sender->lock); |
150 | spinlock_lock(&answer->sender->lock); |
151 | as = answer->sender->as; |
151 | as = answer->sender->as; |
152 | spinlock_unlock(&answer->sender->lock); |
152 | spinlock_unlock(&answer->sender->lock); |
153 | interrupts_restore(ipl); |
153 | interrupts_restore(ipl); |
154 | 154 | ||
155 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), IPC_GET_ARG2(*olddata), |
155 | rc = as_area_share(as, IPC_GET_ARG1(*olddata), IPC_GET_ARG2(*olddata), |
156 | AS, IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
156 | AS, IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata)); |
157 | IPC_SET_RETVAL(answer->data, rc); |
157 | IPC_SET_RETVAL(answer->data, rc); |
158 | return rc; |
158 | return rc; |
159 | } |
159 | } |
160 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_RECV) { |
160 | } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_RECV) { |
161 | if (!IPC_GET_RETVAL(answer->data)) { |
161 | if (!IPC_GET_RETVAL(answer->data)) { |
162 | ipl_t ipl; |
162 | ipl_t ipl; |
163 | as_t *as; |
163 | as_t *as; |
164 | int rc; |
164 | int rc; |
165 | 165 | ||
166 | ipl = interrupts_disable(); |
166 | ipl = interrupts_disable(); |
167 | spinlock_lock(&answer->sender->lock); |
167 | spinlock_lock(&answer->sender->lock); |
168 | as = answer->sender->as; |
168 | as = answer->sender->as; |
169 | spinlock_unlock(&answer->sender->lock); |
169 | spinlock_unlock(&answer->sender->lock); |
170 | interrupts_restore(ipl); |
170 | interrupts_restore(ipl); |
171 | 171 | ||
172 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), IPC_GET_ARG2(*olddata), |
172 | rc = as_area_share(AS, IPC_GET_ARG1(answer->data), IPC_GET_ARG2(*olddata), |
173 | as, IPC_GET_ARG1(*olddata), IPC_GET_ARG2(answer->data)); |
173 | as, IPC_GET_ARG1(*olddata), IPC_GET_ARG2(answer->data)); |
174 | IPC_SET_RETVAL(answer->data, rc); |
174 | IPC_SET_RETVAL(answer->data, rc); |
175 | } |
175 | } |
176 | } |
176 | } |
177 | return 0; |
177 | return 0; |
178 | } |
178 | } |
179 | 179 | ||
180 | /** Called before the request is sent |
180 | /** Called before the request is sent |
181 | * |
181 | * |
182 | * @return 0 - no error, -1 - report error to user |
182 | * @return 0 - no error, -1 - report error to user |
183 | */ |
183 | */ |
184 | static int request_preprocess(call_t *call) |
184 | static int request_preprocess(call_t *call) |
185 | { |
185 | { |
186 | int newphid; |
186 | int newphid; |
187 | size_t size; |
187 | size_t size; |
188 | 188 | ||
189 | switch (IPC_GET_METHOD(call->data)) { |
189 | switch (IPC_GET_METHOD(call->data)) { |
190 | case IPC_M_CONNECT_ME_TO: |
190 | case IPC_M_CONNECT_ME_TO: |
191 | newphid = phone_alloc(); |
191 | newphid = phone_alloc(); |
192 | if (newphid < 0) |
192 | if (newphid < 0) |
193 | return ELIMIT; |
193 | return ELIMIT; |
194 | /* Set arg3 for server */ |
194 | /* Set arg3 for server */ |
195 | IPC_SET_ARG3(call->data, (unative_t)&TASK->phones[newphid]); |
195 | IPC_SET_ARG3(call->data, (unative_t)&TASK->phones[newphid]); |
196 | call->flags |= IPC_CALL_CONN_ME_TO; |
196 | call->flags |= IPC_CALL_CONN_ME_TO; |
197 | call->private = newphid; |
197 | call->private = newphid; |
198 | break; |
198 | break; |
199 | case IPC_M_AS_AREA_SEND: |
199 | case IPC_M_AS_AREA_SEND: |
200 | size = as_get_size(IPC_GET_ARG1(call->data)); |
200 | size = as_get_size(IPC_GET_ARG1(call->data)); |
201 | if (!size) { |
201 | if (!size) { |
202 | return EPERM; |
202 | return EPERM; |
203 | } |
203 | } |
204 | IPC_SET_ARG2(call->data, size); |
204 | IPC_SET_ARG2(call->data, size); |
205 | break; |
205 | break; |
206 | default: |
206 | default: |
207 | break; |
207 | break; |
208 | } |
208 | } |
209 | return 0; |
209 | return 0; |
210 | } |
210 | } |
211 | 211 | ||
212 | /****************************************************/ |
212 | /****************************************************/ |
213 | /* Functions called to process received call/answer |
213 | /* Functions called to process received call/answer |
214 | * before passing to uspace |
214 | * before passing to uspace |
215 | */ |
215 | */ |
216 | 216 | ||
217 | /** Do basic kernel processing of received call answer */ |
217 | /** Do basic kernel processing of received call answer */ |
218 | static void process_answer(call_t *call) |
218 | static void process_answer(call_t *call) |
219 | { |
219 | { |
220 | if (IPC_GET_RETVAL(call->data) == EHANGUP && \ |
220 | if (IPC_GET_RETVAL(call->data) == EHANGUP && \ |
221 | call->flags & IPC_CALL_FORWARDED) |
221 | call->flags & IPC_CALL_FORWARDED) |
222 | IPC_SET_RETVAL(call->data, EFORWARD); |
222 | IPC_SET_RETVAL(call->data, EFORWARD); |
223 | 223 | ||
224 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
224 | if (call->flags & IPC_CALL_CONN_ME_TO) { |
225 | if (IPC_GET_RETVAL(call->data)) |
225 | if (IPC_GET_RETVAL(call->data)) |
226 | phone_dealloc(call->private); |
226 | phone_dealloc(call->private); |
227 | else |
227 | else |
228 | IPC_SET_ARG3(call->data, call->private); |
228 | IPC_SET_ARG3(call->data, call->private); |
229 | } |
229 | } |
230 | } |
230 | } |
231 | 231 | ||
232 | /** Do basic kernel processing of received call request |
232 | /** Do basic kernel processing of received call request |
233 | * |
233 | * |
234 | * @return 0 - the call should be passed to userspace, 1 - ignore call |
234 | * @return 0 - the call should be passed to userspace, 1 - ignore call |
235 | */ |
235 | */ |
236 | static int process_request(answerbox_t *box,call_t *call) |
236 | static int process_request(answerbox_t *box,call_t *call) |
237 | { |
237 | { |
238 | int phoneid; |
238 | int phoneid; |
239 | 239 | ||
240 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
240 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
241 | phoneid = phone_alloc(); |
241 | phoneid = phone_alloc(); |
242 | if (phoneid < 0) { /* Failed to allocate phone */ |
242 | if (phoneid < 0) { /* Failed to allocate phone */ |
243 | IPC_SET_RETVAL(call->data, ELIMIT); |
243 | IPC_SET_RETVAL(call->data, ELIMIT); |
244 | ipc_answer(box,call); |
244 | ipc_answer(box,call); |
245 | return -1; |
245 | return -1; |
246 | } |
246 | } |
247 | IPC_SET_ARG3(call->data, phoneid); |
247 | IPC_SET_ARG3(call->data, phoneid); |
248 | } |
248 | } |
249 | return 0; |
249 | return 0; |
250 | } |
250 | } |
251 | 251 | ||
252 | /** Send a call over IPC, wait for reply, return to user |
252 | /** Send a call over IPC, wait for reply, return to user |
253 | * |
253 | * |
254 | * @return Call identification, returns -1 on fatal error, |
254 | * @return Call identification, returns -1 on fatal error, |
255 | -2 on 'Too many async request, handle answers first |
255 | -2 on 'Too many async request, handle answers first |
256 | */ |
256 | */ |
257 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
257 | unative_t sys_ipc_call_sync_fast(unative_t phoneid, unative_t method, |
258 | unative_t arg1, ipc_data_t *data) |
258 | unative_t arg1, ipc_data_t *data) |
259 | { |
259 | { |
260 | call_t call; |
260 | call_t call; |
261 | phone_t *phone; |
261 | phone_t *phone; |
262 | int res; |
262 | int res; |
263 | 263 | ||
264 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
264 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
265 | 265 | ||
266 | ipc_call_static_init(&call); |
266 | ipc_call_static_init(&call); |
267 | IPC_SET_METHOD(call.data, method); |
267 | IPC_SET_METHOD(call.data, method); |
268 | IPC_SET_ARG1(call.data, arg1); |
268 | IPC_SET_ARG1(call.data, arg1); |
269 | 269 | ||
270 | if (!(res=request_preprocess(&call))) { |
270 | if (!(res=request_preprocess(&call))) { |
271 | ipc_call_sync(phone, &call); |
271 | ipc_call_sync(phone, &call); |
272 | process_answer(&call); |
272 | process_answer(&call); |
273 | } else |
273 | } else |
274 | IPC_SET_RETVAL(call.data, res); |
274 | IPC_SET_RETVAL(call.data, res); |
275 | STRUCT_TO_USPACE(&data->args, &call.data.args); |
275 | STRUCT_TO_USPACE(&data->args, &call.data.args); |
276 | 276 | ||
277 | return 0; |
277 | return 0; |
278 | } |
278 | } |
279 | 279 | ||
280 | /** Synchronous IPC call allowing to send whole message */ |
280 | /** Synchronous IPC call allowing to send whole message */ |
281 | unative_t sys_ipc_call_sync(unative_t phoneid, ipc_data_t *question, |
281 | unative_t sys_ipc_call_sync(unative_t phoneid, ipc_data_t *question, |
282 | ipc_data_t *reply) |
282 | ipc_data_t *reply) |
283 | { |
283 | { |
284 | call_t call; |
284 | call_t call; |
285 | phone_t *phone; |
285 | phone_t *phone; |
286 | int res; |
286 | int res; |
287 | int rc; |
287 | int rc; |
288 | 288 | ||
289 | ipc_call_static_init(&call); |
289 | ipc_call_static_init(&call); |
290 | rc = copy_from_uspace(&call.data.args, &question->args, sizeof(call.data.args)); |
290 | rc = copy_from_uspace(&call.data.args, &question->args, sizeof(call.data.args)); |
291 | if (rc != 0) |
291 | if (rc != 0) |
292 | return (unative_t) rc; |
292 | return (unative_t) rc; |
293 | 293 | ||
294 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
294 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
295 | 295 | ||
296 | if (!(res=request_preprocess(&call))) { |
296 | if (!(res=request_preprocess(&call))) { |
297 | ipc_call_sync(phone, &call); |
297 | ipc_call_sync(phone, &call); |
298 | process_answer(&call); |
298 | process_answer(&call); |
299 | } else |
299 | } else |
300 | IPC_SET_RETVAL(call.data, res); |
300 | IPC_SET_RETVAL(call.data, res); |
301 | 301 | ||
302 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
302 | rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); |
303 | if (rc != 0) |
303 | if (rc != 0) |
304 | return rc; |
304 | return rc; |
305 | 305 | ||
306 | return 0; |
306 | return 0; |
307 | } |
307 | } |
308 | 308 | ||
309 | /** Check that the task did not exceed allowed limit |
309 | /** Check that the task did not exceed allowed limit |
310 | * |
310 | * |
311 | * @return 0 - Limit OK, -1 - limit exceeded |
311 | * @return 0 - Limit OK, -1 - limit exceeded |
312 | */ |
312 | */ |
313 | static int check_call_limit(void) |
313 | static int check_call_limit(void) |
314 | { |
314 | { |
315 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
315 | if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) { |
316 | atomic_dec(&TASK->active_calls); |
316 | atomic_dec(&TASK->active_calls); |
317 | return -1; |
317 | return -1; |
318 | } |
318 | } |
319 | return 0; |
319 | return 0; |
320 | } |
320 | } |
321 | 321 | ||
322 | /** Send an asynchronous call over ipc |
322 | /** Send an asynchronous call over ipc |
323 | * |
323 | * |
324 | * @return Call identification, returns -1 on fatal error, |
324 | * @return Call identification, returns -1 on fatal error, |
325 | -2 on 'Too many async request, handle answers first |
325 | -2 on 'Too many async request, handle answers first |
326 | */ |
326 | */ |
327 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
327 | unative_t sys_ipc_call_async_fast(unative_t phoneid, unative_t method, |
328 | unative_t arg1, unative_t arg2) |
328 | unative_t arg1, unative_t arg2) |
329 | { |
329 | { |
330 | call_t *call; |
330 | call_t *call; |
331 | phone_t *phone; |
331 | phone_t *phone; |
332 | int res; |
332 | int res; |
333 | 333 | ||
334 | if (check_call_limit()) |
334 | if (check_call_limit()) |
335 | return IPC_CALLRET_TEMPORARY; |
335 | return IPC_CALLRET_TEMPORARY; |
336 | 336 | ||
337 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
337 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
338 | 338 | ||
339 | call = ipc_call_alloc(0); |
339 | call = ipc_call_alloc(0); |
340 | IPC_SET_METHOD(call->data, method); |
340 | IPC_SET_METHOD(call->data, method); |
341 | IPC_SET_ARG1(call->data, arg1); |
341 | IPC_SET_ARG1(call->data, arg1); |
342 | IPC_SET_ARG2(call->data, arg2); |
342 | IPC_SET_ARG2(call->data, arg2); |
343 | IPC_SET_ARG3(call->data, 0); |
343 | IPC_SET_ARG3(call->data, 0); |
344 | 344 | ||
345 | if (!(res=request_preprocess(call))) |
345 | if (!(res=request_preprocess(call))) |
346 | ipc_call(phone, call); |
346 | ipc_call(phone, call); |
347 | else |
347 | else |
348 | ipc_backsend_err(phone, call, res); |
348 | ipc_backsend_err(phone, call, res); |
349 | 349 | ||
350 | return (unative_t) call; |
350 | return (unative_t) call; |
351 | } |
351 | } |
352 | 352 | ||
353 | /** Synchronous IPC call allowing to send whole message |
353 | /** Synchronous IPC call allowing to send whole message |
354 | * |
354 | * |
355 | * @return The same as sys_ipc_call_async |
355 | * @return The same as sys_ipc_call_async |
356 | */ |
356 | */ |
357 | unative_t sys_ipc_call_async(unative_t phoneid, ipc_data_t *data) |
357 | unative_t sys_ipc_call_async(unative_t phoneid, ipc_data_t *data) |
358 | { |
358 | { |
359 | call_t *call; |
359 | call_t *call; |
360 | phone_t *phone; |
360 | phone_t *phone; |
361 | int res; |
361 | int res; |
362 | int rc; |
362 | int rc; |
363 | 363 | ||
364 | if (check_call_limit()) |
364 | if (check_call_limit()) |
365 | return IPC_CALLRET_TEMPORARY; |
365 | return IPC_CALLRET_TEMPORARY; |
366 | 366 | ||
367 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
367 | GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL); |
368 | 368 | ||
369 | call = ipc_call_alloc(0); |
369 | call = ipc_call_alloc(0); |
370 | rc = copy_from_uspace(&call->data.args, &data->args, sizeof(call->data.args)); |
370 | rc = copy_from_uspace(&call->data.args, &data->args, sizeof(call->data.args)); |
371 | if (rc != 0) { |
371 | if (rc != 0) { |
372 | ipc_call_free(call); |
372 | ipc_call_free(call); |
373 | return (unative_t) rc; |
373 | return (unative_t) rc; |
374 | } |
374 | } |
375 | if (!(res=request_preprocess(call))) |
375 | if (!(res=request_preprocess(call))) |
376 | ipc_call(phone, call); |
376 | ipc_call(phone, call); |
377 | else |
377 | else |
378 | ipc_backsend_err(phone, call, res); |
378 | ipc_backsend_err(phone, call, res); |
379 | 379 | ||
380 | return (unative_t) call; |
380 | return (unative_t) call; |
381 | } |
381 | } |
382 | 382 | ||
383 | /** Forward received call to another destination |
383 | /** Forward received call to another destination |
384 | * |
384 | * |
385 | * The arg1 and arg2 are changed in the forwarded message |
385 | * The arg1 and arg2 are changed in the forwarded message |
386 | * |
386 | * |
387 | * Warning: If implementing non-fast version, make sure that |
387 | * Warning: If implementing non-fast version, make sure that |
388 | * arg3 is not rewritten for certain system IPC |
388 | * arg3 is not rewritten for certain system IPC |
389 | */ |
389 | */ |
390 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
390 | unative_t sys_ipc_forward_fast(unative_t callid, unative_t phoneid, |
391 | unative_t method, unative_t arg1) |
391 | unative_t method, unative_t arg1) |
392 | { |
392 | { |
393 | call_t *call; |
393 | call_t *call; |
394 | phone_t *phone; |
394 | phone_t *phone; |
395 | 395 | ||
396 | call = get_call(callid); |
396 | call = get_call(callid); |
397 | if (!call) |
397 | if (!call) |
398 | return ENOENT; |
398 | return ENOENT; |
399 | 399 | ||
400 | call->flags |= IPC_CALL_FORWARDED; |
400 | call->flags |= IPC_CALL_FORWARDED; |
401 | 401 | ||
402 | GET_CHECK_PHONE(phone, phoneid, { |
402 | GET_CHECK_PHONE(phone, phoneid, { |
403 | IPC_SET_RETVAL(call->data, EFORWARD); |
403 | IPC_SET_RETVAL(call->data, EFORWARD); |
404 | ipc_answer(&TASK->answerbox, call); |
404 | ipc_answer(&TASK->answerbox, call); |
405 | return ENOENT; |
405 | return ENOENT; |
406 | }); |
406 | }); |
407 | 407 | ||
408 | if (!is_forwardable(IPC_GET_METHOD(call->data))) { |
408 | if (!is_forwardable(IPC_GET_METHOD(call->data))) { |
409 | IPC_SET_RETVAL(call->data, EFORWARD); |
409 | IPC_SET_RETVAL(call->data, EFORWARD); |
410 | ipc_answer(&TASK->answerbox, call); |
410 | ipc_answer(&TASK->answerbox, call); |
411 | return EPERM; |
411 | return EPERM; |
412 | } |
412 | } |
413 | 413 | ||
414 | /* Userspace is not allowed to change method of system methods |
414 | /* Userspace is not allowed to change method of system methods |
415 | * on forward, allow changing ARG1 and ARG2 by means of method and arg1 |
415 | * on forward, allow changing ARG1 and ARG2 by means of method and arg1 |
416 | */ |
416 | */ |
417 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
417 | if (is_system_method(IPC_GET_METHOD(call->data))) { |
418 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
418 | if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) |
419 | phone_dealloc(IPC_GET_ARG3(call->data)); |
419 | phone_dealloc(IPC_GET_ARG3(call->data)); |
420 | 420 | ||
421 | IPC_SET_ARG1(call->data, method); |
421 | IPC_SET_ARG1(call->data, method); |
422 | IPC_SET_ARG2(call->data, arg1); |
422 | IPC_SET_ARG2(call->data, arg1); |
423 | } else { |
423 | } else { |
424 | IPC_SET_METHOD(call->data, method); |
424 | IPC_SET_METHOD(call->data, method); |
425 | IPC_SET_ARG1(call->data, arg1); |
425 | IPC_SET_ARG1(call->data, arg1); |
426 | } |
426 | } |
427 | 427 | ||
428 | return ipc_forward(call, phone, &TASK->answerbox); |
428 | return ipc_forward(call, phone, &TASK->answerbox); |
429 | } |
429 | } |
430 | 430 | ||
431 | /** Send IPC answer */ |
431 | /** Send IPC answer */ |
432 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
432 | unative_t sys_ipc_answer_fast(unative_t callid, unative_t retval, |
433 | unative_t arg1, unative_t arg2) |
433 | unative_t arg1, unative_t arg2) |
434 | { |
434 | { |
435 | call_t *call; |
435 | call_t *call; |
436 | ipc_data_t saved_data; |
436 | ipc_data_t saved_data; |
437 | int saveddata = 0; |
437 | int saveddata = 0; |
438 | int rc; |
438 | int rc; |
439 | 439 | ||
440 | /* Do not answer notification callids */ |
440 | /* Do not answer notification callids */ |
441 | if (callid & IPC_CALLID_NOTIFICATION) |
441 | if (callid & IPC_CALLID_NOTIFICATION) |
442 | return 0; |
442 | return 0; |
443 | 443 | ||
444 | call = get_call(callid); |
444 | call = get_call(callid); |
445 | if (!call) |
445 | if (!call) |
446 | return ENOENT; |
446 | return ENOENT; |
447 | 447 | ||
448 | if (answer_need_old(call)) { |
448 | if (answer_need_old(call)) { |
449 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
449 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
450 | saveddata = 1; |
450 | saveddata = 1; |
451 | } |
451 | } |
452 | 452 | ||
453 | IPC_SET_RETVAL(call->data, retval); |
453 | IPC_SET_RETVAL(call->data, retval); |
454 | IPC_SET_ARG1(call->data, arg1); |
454 | IPC_SET_ARG1(call->data, arg1); |
455 | IPC_SET_ARG2(call->data, arg2); |
455 | IPC_SET_ARG2(call->data, arg2); |
456 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
456 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
457 | 457 | ||
458 | ipc_answer(&TASK->answerbox, call); |
458 | ipc_answer(&TASK->answerbox, call); |
459 | return rc; |
459 | return rc; |
460 | } |
460 | } |
461 | 461 | ||
462 | /** Send IPC answer */ |
462 | /** Send IPC answer */ |
463 | unative_t sys_ipc_answer(unative_t callid, ipc_data_t *data) |
463 | unative_t sys_ipc_answer(unative_t callid, ipc_data_t *data) |
464 | { |
464 | { |
465 | call_t *call; |
465 | call_t *call; |
466 | ipc_data_t saved_data; |
466 | ipc_data_t saved_data; |
467 | int saveddata = 0; |
467 | int saveddata = 0; |
468 | int rc; |
468 | int rc; |
469 | 469 | ||
470 | /* Do not answer notification callids */ |
470 | /* Do not answer notification callids */ |
471 | if (callid & IPC_CALLID_NOTIFICATION) |
471 | if (callid & IPC_CALLID_NOTIFICATION) |
472 | return 0; |
472 | return 0; |
473 | 473 | ||
474 | call = get_call(callid); |
474 | call = get_call(callid); |
475 | if (!call) |
475 | if (!call) |
476 | return ENOENT; |
476 | return ENOENT; |
477 | 477 | ||
478 | if (answer_need_old(call)) { |
478 | if (answer_need_old(call)) { |
479 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
479 | memcpy(&saved_data, &call->data, sizeof(call->data)); |
480 | saveddata = 1; |
480 | saveddata = 1; |
481 | } |
481 | } |
482 | rc = copy_from_uspace(&call->data.args, &data->args, |
482 | rc = copy_from_uspace(&call->data.args, &data->args, |
483 | sizeof(call->data.args)); |
483 | sizeof(call->data.args)); |
484 | if (rc != 0) |
484 | if (rc != 0) |
485 | return rc; |
485 | return rc; |
486 | 486 | ||
487 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
487 | rc = answer_preprocess(call, saveddata ? &saved_data : NULL); |
488 | 488 | ||
489 | ipc_answer(&TASK->answerbox, call); |
489 | ipc_answer(&TASK->answerbox, call); |
490 | 490 | ||
491 | return rc; |
491 | return rc; |
492 | } |
492 | } |
493 | 493 | ||
494 | /** Hang up the phone |
494 | /** Hang up the phone |
495 | * |
495 | * |
496 | */ |
496 | */ |
497 | unative_t sys_ipc_hangup(int phoneid) |
497 | unative_t sys_ipc_hangup(int phoneid) |
498 | { |
498 | { |
499 | phone_t *phone; |
499 | phone_t *phone; |
500 | 500 | ||
501 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
501 | GET_CHECK_PHONE(phone, phoneid, return ENOENT); |
502 | 502 | ||
503 | if (ipc_phone_hangup(phone)) |
503 | if (ipc_phone_hangup(phone)) |
504 | return -1; |
504 | return -1; |
505 | 505 | ||
506 | return 0; |
506 | return 0; |
507 | } |
507 | } |
508 | 508 | ||
509 | /** Wait for incoming ipc call or answer |
509 | /** Wait for incoming ipc call or answer |
510 | * |
510 | * |
511 | * @param calldata Pointer to buffer where the call/answer data is stored |
511 | * @param calldata Pointer to buffer where the call/answer data is stored |
512 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
512 | * @param usec Timeout. See waitq_sleep_timeout() for explanation. |
513 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() for explanation. |
513 | * @param flags Select mode of sleep operation. See waitq_sleep_timeout() for explanation. |
514 | * |
514 | * |
515 | * @return Callid, if callid & 1, then the call is answer |
515 | * @return Callid, if callid & 1, then the call is answer |
516 | */ |
516 | */ |
517 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
517 | unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags) |
518 | { |
518 | { |
519 | call_t *call; |
519 | call_t *call; |
520 | 520 | ||
521 | restart: |
521 | restart: |
522 | call = ipc_wait_for_call(&TASK->answerbox, usec, flags | SYNCH_FLAGS_INTERRUPTIBLE); |
522 | call = ipc_wait_for_call(&TASK->answerbox, usec, flags | SYNCH_FLAGS_INTERRUPTIBLE); |
523 | if (!call) |
523 | if (!call) |
524 | return 0; |
524 | return 0; |
525 | 525 | ||
526 | if (call->flags & IPC_CALL_NOTIF) { |
526 | if (call->flags & IPC_CALL_NOTIF) { |
527 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
527 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
528 | 528 | ||
529 | /* Set in_phone_hash to the interrupt counter */ |
529 | /* Set in_phone_hash to the interrupt counter */ |
530 | call->data.phone = (void *)call->private; |
530 | call->data.phone = (void *)call->private; |
531 | 531 | ||
532 | STRUCT_TO_USPACE(calldata, &call->data); |
532 | STRUCT_TO_USPACE(calldata, &call->data); |
533 | 533 | ||
534 | ipc_call_free(call); |
534 | ipc_call_free(call); |
535 | 535 | ||
536 | return ((unative_t)call) | IPC_CALLID_NOTIFICATION; |
536 | return ((unative_t)call) | IPC_CALLID_NOTIFICATION; |
537 | } |
537 | } |
538 | 538 | ||
539 | if (call->flags & IPC_CALL_ANSWERED) { |
539 | if (call->flags & IPC_CALL_ANSWERED) { |
540 | process_answer(call); |
540 | process_answer(call); |
541 | 541 | ||
542 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
542 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
543 | 543 | ||
544 | atomic_dec(&TASK->active_calls); |
544 | atomic_dec(&TASK->active_calls); |
545 | 545 | ||
546 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
546 | if (call->flags & IPC_CALL_DISCARD_ANSWER) { |
547 | ipc_call_free(call); |
547 | ipc_call_free(call); |
548 | goto restart; |
548 | goto restart; |
549 | } |
549 | } |
550 | 550 | ||
551 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
551 | STRUCT_TO_USPACE(&calldata->args, &call->data.args); |
552 | ipc_call_free(call); |
552 | ipc_call_free(call); |
553 | 553 | ||
554 | return ((unative_t)call) | IPC_CALLID_ANSWERED; |
554 | return ((unative_t)call) | IPC_CALLID_ANSWERED; |
555 | } |
555 | } |
556 | 556 | ||
557 | if (process_request(&TASK->answerbox, call)) |
557 | if (process_request(&TASK->answerbox, call)) |
558 | goto restart; |
558 | goto restart; |
559 | 559 | ||
560 | /* Include phone address('id') of the caller in the request, |
560 | /* Include phone address('id') of the caller in the request, |
561 | * copy whole call->data, not only call->data.args */ |
561 | * copy whole call->data, not only call->data.args */ |
562 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
562 | if (STRUCT_TO_USPACE(calldata, &call->data)) { |
563 | return 0; |
563 | return 0; |
564 | } |
564 | } |
565 | return (unative_t)call; |
565 | return (unative_t)call; |
566 | } |
566 | } |
567 | 567 | ||
568 | /** Connect irq handler to task. |
568 | /** Connect irq handler to task. |
569 | * |
569 | * |
570 | * @param inr IRQ number. |
570 | * @param inr IRQ number. |
571 | * @param devno Device number. |
571 | * @param devno Device number. |
572 | * @param method Method to be associated with the notification. |
572 | * @param method Method to be associated with the notification. |
573 | * @param ucode Uspace pointer to the top-half pseudocode. |
573 | * @param ucode Uspace pointer to the top-half pseudocode. |
574 | * |
574 | * |
575 | * @return EPERM or a return code returned by ipc_irq_register(). |
575 | * @return EPERM or a return code returned by ipc_irq_register(). |
576 | */ |
576 | */ |
577 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, irq_code_t *ucode) |
577 | unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, irq_code_t *ucode) |
578 | { |
578 | { |
579 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
579 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
580 | return EPERM; |
580 | return EPERM; |
581 | 581 | ||
582 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
582 | return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode); |
583 | } |
583 | } |
584 | 584 | ||
585 | /** Disconnect irq handler from task. |
585 | /** Disconnect irq handler from task. |
586 | * |
586 | * |
587 | * @param inr IRQ number. |
587 | * @param inr IRQ number. |
588 | * @param devno Device number. |
588 | * @param devno Device number. |
589 | */ |
589 | */ |
590 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
590 | unative_t sys_ipc_unregister_irq(inr_t inr, devno_t devno) |
591 | { |
591 | { |
592 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
592 | if (!(cap_get(TASK) & CAP_IRQ_REG)) |
593 | return EPERM; |
593 | return EPERM; |
594 | 594 | ||
595 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
595 | ipc_irq_unregister(&TASK->answerbox, inr, devno); |
596 | 596 | ||
597 | return 0; |
597 | return 0; |
598 | } |
598 | } |
599 | 599 | ||
600 | /** @} |
600 | /** @} |
601 | */ |
601 | */ |
602 | 602 |