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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 | /* Lock ordering |
35 | /* Lock ordering |
36 | * |
36 | * |
37 | * First the answerbox, then the phone. |
37 | * First the answerbox, then the phone. |
38 | */ |
38 | */ |
39 | 39 | ||
40 | #include <synch/synch.h> |
40 | #include <synch/synch.h> |
41 | #include <synch/spinlock.h> |
41 | #include <synch/spinlock.h> |
42 | #include <synch/mutex.h> |
42 | #include <synch/mutex.h> |
43 | #include <synch/waitq.h> |
43 | #include <synch/waitq.h> |
44 | #include <synch/synch.h> |
44 | #include <synch/synch.h> |
45 | #include <ipc/ipc.h> |
45 | #include <ipc/ipc.h> |
46 | #include <ipc/kbox.h> |
46 | #include <ipc/kbox.h> |
- | 47 | #include <event/event.h> |
|
47 | #include <errno.h> |
48 | #include <errno.h> |
48 | #include <mm/slab.h> |
49 | #include <mm/slab.h> |
49 | #include <arch.h> |
50 | #include <arch.h> |
50 | #include <proc/task.h> |
51 | #include <proc/task.h> |
51 | #include <memstr.h> |
52 | #include <memstr.h> |
52 | #include <debug.h> |
53 | #include <debug.h> |
53 | 54 | ||
- | 55 | ||
54 | #include <print.h> |
56 | #include <print.h> |
55 | #include <console/console.h> |
57 | #include <console/console.h> |
56 | #include <proc/thread.h> |
58 | #include <proc/thread.h> |
57 | #include <arch/interrupt.h> |
59 | #include <arch/interrupt.h> |
58 | #include <ipc/irq.h> |
60 | #include <ipc/irq.h> |
59 | 61 | ||
60 | /** Open channel that is assigned automatically to new tasks */ |
62 | /** Open channel that is assigned automatically to new tasks */ |
61 | answerbox_t *ipc_phone_0 = NULL; |
63 | answerbox_t *ipc_phone_0 = NULL; |
62 | 64 | ||
63 | static slab_cache_t *ipc_call_slab; |
65 | static slab_cache_t *ipc_call_slab; |
64 | 66 | ||
65 | /** Initialize a call structure. |
67 | /** Initialize a call structure. |
66 | * |
68 | * |
67 | * @param call Call structure to be initialized. |
69 | * @param call Call structure to be initialized. |
68 | */ |
70 | */ |
69 | static void _ipc_call_init(call_t *call) |
71 | static void _ipc_call_init(call_t *call) |
70 | { |
72 | { |
71 | memsetb(call, sizeof(*call), 0); |
73 | memsetb(call, sizeof(*call), 0); |
72 | call->callerbox = &TASK->answerbox; |
74 | call->callerbox = &TASK->answerbox; |
73 | call->sender = TASK; |
75 | call->sender = TASK; |
74 | call->buffer = NULL; |
76 | call->buffer = NULL; |
75 | } |
77 | } |
76 | 78 | ||
77 | /** Allocate and initialize a call structure. |
79 | /** Allocate and initialize a call structure. |
78 | * |
80 | * |
79 | * The call is initialized, so that the reply will be directed to |
81 | * The call is initialized, so that the reply will be directed to |
80 | * TASK->answerbox. |
82 | * TASK->answerbox. |
81 | * |
83 | * |
82 | * @param flags Parameters for slab_alloc (e.g FRAME_ATOMIC). |
84 | * @param flags Parameters for slab_alloc (e.g FRAME_ATOMIC). |
83 | * |
85 | * |
84 | * @return If flags permit it, return NULL, or initialized kernel |
86 | * @return If flags permit it, return NULL, or initialized kernel |
85 | * call structure. |
87 | * call structure. |
86 | */ |
88 | */ |
87 | call_t *ipc_call_alloc(int flags) |
89 | call_t *ipc_call_alloc(int flags) |
88 | { |
90 | { |
89 | call_t *call; |
91 | call_t *call; |
90 | 92 | ||
91 | call = slab_alloc(ipc_call_slab, flags); |
93 | call = slab_alloc(ipc_call_slab, flags); |
92 | if (call) |
94 | if (call) |
93 | _ipc_call_init(call); |
95 | _ipc_call_init(call); |
94 | 96 | ||
95 | return call; |
97 | return call; |
96 | } |
98 | } |
97 | 99 | ||
98 | /** Initialize a statically allocated call structure. |
100 | /** Initialize a statically allocated call structure. |
99 | * |
101 | * |
100 | * @param call Statically allocated kernel call structure to be |
102 | * @param call Statically allocated kernel call structure to be |
101 | * initialized. |
103 | * initialized. |
102 | */ |
104 | */ |
103 | void ipc_call_static_init(call_t *call) |
105 | void ipc_call_static_init(call_t *call) |
104 | { |
106 | { |
105 | _ipc_call_init(call); |
107 | _ipc_call_init(call); |
106 | call->flags |= IPC_CALL_STATIC_ALLOC; |
108 | call->flags |= IPC_CALL_STATIC_ALLOC; |
107 | } |
109 | } |
108 | 110 | ||
109 | /** Deallocate a call structure. |
111 | /** Deallocate a call structure. |
110 | * |
112 | * |
111 | * @param call Call structure to be freed. |
113 | * @param call Call structure to be freed. |
112 | */ |
114 | */ |
113 | void ipc_call_free(call_t *call) |
115 | void ipc_call_free(call_t *call) |
114 | { |
116 | { |
115 | ASSERT(!(call->flags & IPC_CALL_STATIC_ALLOC)); |
117 | ASSERT(!(call->flags & IPC_CALL_STATIC_ALLOC)); |
116 | /* Check to see if we have data in the IPC_M_DATA_SEND buffer. */ |
118 | /* Check to see if we have data in the IPC_M_DATA_SEND buffer. */ |
117 | if (call->buffer) |
119 | if (call->buffer) |
118 | free(call->buffer); |
120 | free(call->buffer); |
119 | slab_free(ipc_call_slab, call); |
121 | slab_free(ipc_call_slab, call); |
120 | } |
122 | } |
121 | 123 | ||
122 | /** Initialize an answerbox structure. |
124 | /** Initialize an answerbox structure. |
123 | * |
125 | * |
124 | * @param box Answerbox structure to be initialized. |
126 | * @param box Answerbox structure to be initialized. |
125 | * @param task Task to which the answerbox belongs. |
127 | * @param task Task to which the answerbox belongs. |
126 | */ |
128 | */ |
127 | void ipc_answerbox_init(answerbox_t *box, task_t *task) |
129 | void ipc_answerbox_init(answerbox_t *box, task_t *task) |
128 | { |
130 | { |
129 | spinlock_initialize(&box->lock, "ipc_box_lock"); |
131 | spinlock_initialize(&box->lock, "ipc_box_lock"); |
130 | spinlock_initialize(&box->irq_lock, "ipc_box_irqlock"); |
132 | spinlock_initialize(&box->irq_lock, "ipc_box_irqlock"); |
131 | waitq_initialize(&box->wq); |
133 | waitq_initialize(&box->wq); |
132 | list_initialize(&box->connected_phones); |
134 | list_initialize(&box->connected_phones); |
133 | list_initialize(&box->calls); |
135 | list_initialize(&box->calls); |
134 | list_initialize(&box->dispatched_calls); |
136 | list_initialize(&box->dispatched_calls); |
135 | list_initialize(&box->answers); |
137 | list_initialize(&box->answers); |
136 | list_initialize(&box->irq_notifs); |
138 | list_initialize(&box->irq_notifs); |
137 | list_initialize(&box->irq_head); |
139 | list_initialize(&box->irq_head); |
138 | box->task = task; |
140 | box->task = task; |
139 | } |
141 | } |
140 | 142 | ||
141 | /** Connect a phone to an answerbox. |
143 | /** Connect a phone to an answerbox. |
142 | * |
144 | * |
143 | * @param phone Initialized phone structure. |
145 | * @param phone Initialized phone structure. |
144 | * @param box Initialized answerbox structure. |
146 | * @param box Initialized answerbox structure. |
145 | */ |
147 | */ |
146 | void ipc_phone_connect(phone_t *phone, answerbox_t *box) |
148 | void ipc_phone_connect(phone_t *phone, answerbox_t *box) |
147 | { |
149 | { |
148 | mutex_lock(&phone->lock); |
150 | mutex_lock(&phone->lock); |
149 | 151 | ||
150 | phone->state = IPC_PHONE_CONNECTED; |
152 | phone->state = IPC_PHONE_CONNECTED; |
151 | phone->callee = box; |
153 | phone->callee = box; |
152 | 154 | ||
153 | spinlock_lock(&box->lock); |
155 | spinlock_lock(&box->lock); |
154 | list_append(&phone->link, &box->connected_phones); |
156 | list_append(&phone->link, &box->connected_phones); |
155 | spinlock_unlock(&box->lock); |
157 | spinlock_unlock(&box->lock); |
156 | 158 | ||
157 | mutex_unlock(&phone->lock); |
159 | mutex_unlock(&phone->lock); |
158 | } |
160 | } |
159 | 161 | ||
160 | /** Initialize a phone structure. |
162 | /** Initialize a phone structure. |
161 | * |
163 | * |
162 | * @param phone Phone structure to be initialized. |
164 | * @param phone Phone structure to be initialized. |
163 | */ |
165 | */ |
164 | void ipc_phone_init(phone_t *phone) |
166 | void ipc_phone_init(phone_t *phone) |
165 | { |
167 | { |
166 | mutex_initialize(&phone->lock, MUTEX_PASSIVE); |
168 | mutex_initialize(&phone->lock, MUTEX_PASSIVE); |
167 | phone->callee = NULL; |
169 | phone->callee = NULL; |
168 | phone->state = IPC_PHONE_FREE; |
170 | phone->state = IPC_PHONE_FREE; |
169 | atomic_set(&phone->active_calls, 0); |
171 | atomic_set(&phone->active_calls, 0); |
170 | } |
172 | } |
171 | 173 | ||
172 | /** Helper function to facilitate synchronous calls. |
174 | /** Helper function to facilitate synchronous calls. |
173 | * |
175 | * |
174 | * @param phone Destination kernel phone structure. |
176 | * @param phone Destination kernel phone structure. |
175 | * @param request Call structure with request. |
177 | * @param request Call structure with request. |
176 | * |
178 | * |
177 | * @return EOK on success or EINTR if the sleep was interrupted. |
179 | * @return EOK on success or EINTR if the sleep was interrupted. |
178 | */ |
180 | */ |
179 | int ipc_call_sync(phone_t *phone, call_t *request) |
181 | int ipc_call_sync(phone_t *phone, call_t *request) |
180 | { |
182 | { |
181 | answerbox_t sync_box; |
183 | answerbox_t sync_box; |
182 | 184 | ||
183 | ipc_answerbox_init(&sync_box, TASK); |
185 | ipc_answerbox_init(&sync_box, TASK); |
184 | 186 | ||
185 | /* We will receive data in a special box. */ |
187 | /* We will receive data in a special box. */ |
186 | request->callerbox = &sync_box; |
188 | request->callerbox = &sync_box; |
187 | 189 | ||
188 | ipc_call(phone, request); |
190 | ipc_call(phone, request); |
189 | if (!ipc_wait_for_call(&sync_box, SYNCH_NO_TIMEOUT, |
191 | if (!ipc_wait_for_call(&sync_box, SYNCH_NO_TIMEOUT, |
190 | SYNCH_FLAGS_INTERRUPTIBLE)) |
192 | SYNCH_FLAGS_INTERRUPTIBLE)) |
191 | return EINTR; |
193 | return EINTR; |
192 | return EOK; |
194 | return EOK; |
193 | } |
195 | } |
194 | 196 | ||
195 | /** Answer a message which was not dispatched and is not listed in any queue. |
197 | /** Answer a message which was not dispatched and is not listed in any queue. |
196 | * |
198 | * |
197 | * @param call Call structure to be answered. |
199 | * @param call Call structure to be answered. |
198 | */ |
200 | */ |
199 | static void _ipc_answer_free_call(call_t *call) |
201 | static void _ipc_answer_free_call(call_t *call) |
200 | { |
202 | { |
201 | answerbox_t *callerbox = call->callerbox; |
203 | answerbox_t *callerbox = call->callerbox; |
202 | 204 | ||
203 | call->flags |= IPC_CALL_ANSWERED; |
205 | call->flags |= IPC_CALL_ANSWERED; |
204 | 206 | ||
205 | if (call->flags & IPC_CALL_FORWARDED) { |
207 | if (call->flags & IPC_CALL_FORWARDED) { |
206 | if (call->caller_phone) { |
208 | if (call->caller_phone) { |
207 | /* Demasquerade the caller phone. */ |
209 | /* Demasquerade the caller phone. */ |
208 | call->data.phone = call->caller_phone; |
210 | call->data.phone = call->caller_phone; |
209 | } |
211 | } |
210 | } |
212 | } |
211 | 213 | ||
212 | spinlock_lock(&callerbox->lock); |
214 | spinlock_lock(&callerbox->lock); |
213 | list_append(&call->link, &callerbox->answers); |
215 | list_append(&call->link, &callerbox->answers); |
214 | spinlock_unlock(&callerbox->lock); |
216 | spinlock_unlock(&callerbox->lock); |
215 | waitq_wakeup(&callerbox->wq, WAKEUP_FIRST); |
217 | waitq_wakeup(&callerbox->wq, WAKEUP_FIRST); |
216 | } |
218 | } |
217 | 219 | ||
218 | /** Answer a message which is in a callee queue. |
220 | /** Answer a message which is in a callee queue. |
219 | * |
221 | * |
220 | * @param box Answerbox that is answering the message. |
222 | * @param box Answerbox that is answering the message. |
221 | * @param call Modified request that is being sent back. |
223 | * @param call Modified request that is being sent back. |
222 | */ |
224 | */ |
223 | void ipc_answer(answerbox_t *box, call_t *call) |
225 | void ipc_answer(answerbox_t *box, call_t *call) |
224 | { |
226 | { |
225 | /* Remove from active box */ |
227 | /* Remove from active box */ |
226 | spinlock_lock(&box->lock); |
228 | spinlock_lock(&box->lock); |
227 | list_remove(&call->link); |
229 | list_remove(&call->link); |
228 | spinlock_unlock(&box->lock); |
230 | spinlock_unlock(&box->lock); |
229 | /* Send back answer */ |
231 | /* Send back answer */ |
230 | _ipc_answer_free_call(call); |
232 | _ipc_answer_free_call(call); |
231 | } |
233 | } |
232 | 234 | ||
233 | /** Simulate sending back a message. |
235 | /** Simulate sending back a message. |
234 | * |
236 | * |
235 | * Most errors are better handled by forming a normal backward |
237 | * Most errors are better handled by forming a normal backward |
236 | * message and sending it as a normal answer. |
238 | * message and sending it as a normal answer. |
237 | * |
239 | * |
238 | * @param phone Phone structure the call should appear to come from. |
240 | * @param phone Phone structure the call should appear to come from. |
239 | * @param call Call structure to be answered. |
241 | * @param call Call structure to be answered. |
240 | * @param err Return value to be used for the answer. |
242 | * @param err Return value to be used for the answer. |
241 | */ |
243 | */ |
242 | void ipc_backsend_err(phone_t *phone, call_t *call, unative_t err) |
244 | void ipc_backsend_err(phone_t *phone, call_t *call, unative_t err) |
243 | { |
245 | { |
244 | call->data.phone = phone; |
246 | call->data.phone = phone; |
245 | atomic_inc(&phone->active_calls); |
247 | atomic_inc(&phone->active_calls); |
246 | IPC_SET_RETVAL(call->data, err); |
248 | IPC_SET_RETVAL(call->data, err); |
247 | _ipc_answer_free_call(call); |
249 | _ipc_answer_free_call(call); |
248 | } |
250 | } |
249 | 251 | ||
250 | /** Unsafe unchecking version of ipc_call. |
252 | /** Unsafe unchecking version of ipc_call. |
251 | * |
253 | * |
252 | * @param phone Phone structure the call comes from. |
254 | * @param phone Phone structure the call comes from. |
253 | * @param box Destination answerbox structure. |
255 | * @param box Destination answerbox structure. |
254 | * @param call Call structure with request. |
256 | * @param call Call structure with request. |
255 | */ |
257 | */ |
256 | static void _ipc_call(phone_t *phone, answerbox_t *box, call_t *call) |
258 | static void _ipc_call(phone_t *phone, answerbox_t *box, call_t *call) |
257 | { |
259 | { |
258 | if (!(call->flags & IPC_CALL_FORWARDED)) { |
260 | if (!(call->flags & IPC_CALL_FORWARDED)) { |
259 | atomic_inc(&phone->active_calls); |
261 | atomic_inc(&phone->active_calls); |
260 | call->data.phone = phone; |
262 | call->data.phone = phone; |
261 | } |
263 | } |
262 | 264 | ||
263 | spinlock_lock(&box->lock); |
265 | spinlock_lock(&box->lock); |
264 | list_append(&call->link, &box->calls); |
266 | list_append(&call->link, &box->calls); |
265 | spinlock_unlock(&box->lock); |
267 | spinlock_unlock(&box->lock); |
266 | waitq_wakeup(&box->wq, WAKEUP_FIRST); |
268 | waitq_wakeup(&box->wq, WAKEUP_FIRST); |
267 | } |
269 | } |
268 | 270 | ||
269 | /** Send an asynchronous request using a phone to an answerbox. |
271 | /** Send an asynchronous request using a phone to an answerbox. |
270 | * |
272 | * |
271 | * @param phone Phone structure the call comes from and which is |
273 | * @param phone Phone structure the call comes from and which is |
272 | * connected to the destination answerbox. |
274 | * connected to the destination answerbox. |
273 | * @param call Call structure with request. |
275 | * @param call Call structure with request. |
274 | * |
276 | * |
275 | * @return Return 0 on success, ENOENT on error. |
277 | * @return Return 0 on success, ENOENT on error. |
276 | */ |
278 | */ |
277 | int ipc_call(phone_t *phone, call_t *call) |
279 | int ipc_call(phone_t *phone, call_t *call) |
278 | { |
280 | { |
279 | answerbox_t *box; |
281 | answerbox_t *box; |
280 | 282 | ||
281 | mutex_lock(&phone->lock); |
283 | mutex_lock(&phone->lock); |
282 | if (phone->state != IPC_PHONE_CONNECTED) { |
284 | if (phone->state != IPC_PHONE_CONNECTED) { |
283 | mutex_unlock(&phone->lock); |
285 | mutex_unlock(&phone->lock); |
284 | if (call->flags & IPC_CALL_FORWARDED) { |
286 | if (call->flags & IPC_CALL_FORWARDED) { |
285 | IPC_SET_RETVAL(call->data, EFORWARD); |
287 | IPC_SET_RETVAL(call->data, EFORWARD); |
286 | _ipc_answer_free_call(call); |
288 | _ipc_answer_free_call(call); |
287 | } else { |
289 | } else { |
288 | if (phone->state == IPC_PHONE_HUNGUP) |
290 | if (phone->state == IPC_PHONE_HUNGUP) |
289 | ipc_backsend_err(phone, call, EHANGUP); |
291 | ipc_backsend_err(phone, call, EHANGUP); |
290 | else |
292 | else |
291 | ipc_backsend_err(phone, call, ENOENT); |
293 | ipc_backsend_err(phone, call, ENOENT); |
292 | } |
294 | } |
293 | return ENOENT; |
295 | return ENOENT; |
294 | } |
296 | } |
295 | box = phone->callee; |
297 | box = phone->callee; |
296 | _ipc_call(phone, box, call); |
298 | _ipc_call(phone, box, call); |
297 | 299 | ||
298 | mutex_unlock(&phone->lock); |
300 | mutex_unlock(&phone->lock); |
299 | return 0; |
301 | return 0; |
300 | } |
302 | } |
301 | 303 | ||
302 | /** Disconnect phone from answerbox. |
304 | /** Disconnect phone from answerbox. |
303 | * |
305 | * |
304 | * This call leaves the phone in the HUNGUP state. The change to 'free' is done |
306 | * This call leaves the phone in the HUNGUP state. The change to 'free' is done |
305 | * lazily later. |
307 | * lazily later. |
306 | * |
308 | * |
307 | * @param phone Phone structure to be hung up. |
309 | * @param phone Phone structure to be hung up. |
308 | * |
310 | * |
309 | * @return Return 0 if the phone is disconnected. |
311 | * @return Return 0 if the phone is disconnected. |
310 | * Return -1 if the phone was already disconnected. |
312 | * Return -1 if the phone was already disconnected. |
311 | */ |
313 | */ |
312 | int ipc_phone_hangup(phone_t *phone) |
314 | int ipc_phone_hangup(phone_t *phone) |
313 | { |
315 | { |
314 | answerbox_t *box; |
316 | answerbox_t *box; |
315 | call_t *call; |
317 | call_t *call; |
316 | 318 | ||
317 | mutex_lock(&phone->lock); |
319 | mutex_lock(&phone->lock); |
318 | if (phone->state == IPC_PHONE_FREE || |
320 | if (phone->state == IPC_PHONE_FREE || |
319 | phone->state == IPC_PHONE_HUNGUP || |
321 | phone->state == IPC_PHONE_HUNGUP || |
320 | phone->state == IPC_PHONE_CONNECTING) { |
322 | phone->state == IPC_PHONE_CONNECTING) { |
321 | mutex_unlock(&phone->lock); |
323 | mutex_unlock(&phone->lock); |
322 | return -1; |
324 | return -1; |
323 | } |
325 | } |
324 | box = phone->callee; |
326 | box = phone->callee; |
325 | if (phone->state != IPC_PHONE_SLAMMED) { |
327 | if (phone->state != IPC_PHONE_SLAMMED) { |
326 | /* Remove myself from answerbox */ |
328 | /* Remove myself from answerbox */ |
327 | spinlock_lock(&box->lock); |
329 | spinlock_lock(&box->lock); |
328 | list_remove(&phone->link); |
330 | list_remove(&phone->link); |
329 | spinlock_unlock(&box->lock); |
331 | spinlock_unlock(&box->lock); |
330 | 332 | ||
331 | if (phone->state != IPC_PHONE_SLAMMED) { |
333 | if (phone->state != IPC_PHONE_SLAMMED) { |
332 | call = ipc_call_alloc(0); |
334 | call = ipc_call_alloc(0); |
333 | IPC_SET_METHOD(call->data, IPC_M_PHONE_HUNGUP); |
335 | IPC_SET_METHOD(call->data, IPC_M_PHONE_HUNGUP); |
334 | call->flags |= IPC_CALL_DISCARD_ANSWER; |
336 | call->flags |= IPC_CALL_DISCARD_ANSWER; |
335 | _ipc_call(phone, box, call); |
337 | _ipc_call(phone, box, call); |
336 | } |
338 | } |
337 | } |
339 | } |
338 | 340 | ||
339 | phone->state = IPC_PHONE_HUNGUP; |
341 | phone->state = IPC_PHONE_HUNGUP; |
340 | mutex_unlock(&phone->lock); |
342 | mutex_unlock(&phone->lock); |
341 | 343 | ||
342 | return 0; |
344 | return 0; |
343 | } |
345 | } |
344 | 346 | ||
345 | /** Forwards call from one answerbox to another one. |
347 | /** Forwards call from one answerbox to another one. |
346 | * |
348 | * |
347 | * @param call Call structure to be redirected. |
349 | * @param call Call structure to be redirected. |
348 | * @param newphone Phone structure to target answerbox. |
350 | * @param newphone Phone structure to target answerbox. |
349 | * @param oldbox Old answerbox structure. |
351 | * @param oldbox Old answerbox structure. |
350 | * @param mode Flags that specify mode of the forward operation. |
352 | * @param mode Flags that specify mode of the forward operation. |
351 | * |
353 | * |
352 | * @return Return 0 if forwarding succeeded or an error code if |
354 | * @return Return 0 if forwarding succeeded or an error code if |
353 | * there was error. |
355 | * there was error. |
354 | * |
356 | * |
355 | * The return value serves only as an information for the forwarder, |
357 | * The return value serves only as an information for the forwarder, |
356 | * the original caller is notified automatically with EFORWARD. |
358 | * the original caller is notified automatically with EFORWARD. |
357 | */ |
359 | */ |
358 | int ipc_forward(call_t *call, phone_t *newphone, answerbox_t *oldbox, int mode) |
360 | int ipc_forward(call_t *call, phone_t *newphone, answerbox_t *oldbox, int mode) |
359 | { |
361 | { |
360 | spinlock_lock(&oldbox->lock); |
362 | spinlock_lock(&oldbox->lock); |
361 | list_remove(&call->link); |
363 | list_remove(&call->link); |
362 | spinlock_unlock(&oldbox->lock); |
364 | spinlock_unlock(&oldbox->lock); |
363 | 365 | ||
364 | if (mode & IPC_FF_ROUTE_FROM_ME) { |
366 | if (mode & IPC_FF_ROUTE_FROM_ME) { |
365 | if (!call->caller_phone) |
367 | if (!call->caller_phone) |
366 | call->caller_phone = call->data.phone; |
368 | call->caller_phone = call->data.phone; |
367 | call->data.phone = newphone; |
369 | call->data.phone = newphone; |
368 | } |
370 | } |
369 | 371 | ||
370 | return ipc_call(newphone, call); |
372 | return ipc_call(newphone, call); |
371 | } |
373 | } |
372 | 374 | ||
373 | 375 | ||
374 | /** Wait for a phone call. |
376 | /** Wait for a phone call. |
375 | * |
377 | * |
376 | * @param box Answerbox expecting the call. |
378 | * @param box Answerbox expecting the call. |
377 | * @param usec Timeout in microseconds. See documentation for |
379 | * @param usec Timeout in microseconds. See documentation for |
378 | * waitq_sleep_timeout() for decription of its special |
380 | * waitq_sleep_timeout() for decription of its special |
379 | * meaning. |
381 | * meaning. |
380 | * @param flags Select mode of sleep operation. See documentation for |
382 | * @param flags Select mode of sleep operation. See documentation for |
381 | * waitq_sleep_timeout() for description of its special |
383 | * waitq_sleep_timeout() for description of its special |
382 | * meaning. |
384 | * meaning. |
383 | * @return Recived call structure or NULL. |
385 | * @return Recived call structure or NULL. |
384 | * |
386 | * |
385 | * To distinguish between a call and an answer, have a look at call->flags. |
387 | * To distinguish between a call and an answer, have a look at call->flags. |
386 | */ |
388 | */ |
387 | call_t *ipc_wait_for_call(answerbox_t *box, uint32_t usec, int flags) |
389 | call_t *ipc_wait_for_call(answerbox_t *box, uint32_t usec, int flags) |
388 | { |
390 | { |
389 | call_t *request; |
391 | call_t *request; |
390 | ipl_t ipl; |
392 | ipl_t ipl; |
391 | int rc; |
393 | int rc; |
392 | 394 | ||
393 | restart: |
395 | restart: |
394 | rc = waitq_sleep_timeout(&box->wq, usec, flags); |
396 | rc = waitq_sleep_timeout(&box->wq, usec, flags); |
395 | if (SYNCH_FAILED(rc)) |
397 | if (SYNCH_FAILED(rc)) |
396 | return NULL; |
398 | return NULL; |
397 | 399 | ||
398 | spinlock_lock(&box->lock); |
400 | spinlock_lock(&box->lock); |
399 | if (!list_empty(&box->irq_notifs)) { |
401 | if (!list_empty(&box->irq_notifs)) { |
400 | ipl = interrupts_disable(); |
402 | ipl = interrupts_disable(); |
401 | spinlock_lock(&box->irq_lock); |
403 | spinlock_lock(&box->irq_lock); |
402 | 404 | ||
403 | request = list_get_instance(box->irq_notifs.next, call_t, link); |
405 | request = list_get_instance(box->irq_notifs.next, call_t, link); |
404 | list_remove(&request->link); |
406 | list_remove(&request->link); |
405 | 407 | ||
406 | spinlock_unlock(&box->irq_lock); |
408 | spinlock_unlock(&box->irq_lock); |
407 | interrupts_restore(ipl); |
409 | interrupts_restore(ipl); |
408 | } else if (!list_empty(&box->answers)) { |
410 | } else if (!list_empty(&box->answers)) { |
409 | /* Handle asynchronous answers */ |
411 | /* Handle asynchronous answers */ |
410 | request = list_get_instance(box->answers.next, call_t, link); |
412 | request = list_get_instance(box->answers.next, call_t, link); |
411 | list_remove(&request->link); |
413 | list_remove(&request->link); |
412 | atomic_dec(&request->data.phone->active_calls); |
414 | atomic_dec(&request->data.phone->active_calls); |
413 | } else if (!list_empty(&box->calls)) { |
415 | } else if (!list_empty(&box->calls)) { |
414 | /* Handle requests */ |
416 | /* Handle requests */ |
415 | request = list_get_instance(box->calls.next, call_t, link); |
417 | request = list_get_instance(box->calls.next, call_t, link); |
416 | list_remove(&request->link); |
418 | list_remove(&request->link); |
417 | /* Append request to dispatch queue */ |
419 | /* Append request to dispatch queue */ |
418 | list_append(&request->link, &box->dispatched_calls); |
420 | list_append(&request->link, &box->dispatched_calls); |
419 | } else { |
421 | } else { |
420 | /* This can happen regularly after ipc_cleanup */ |
422 | /* This can happen regularly after ipc_cleanup */ |
421 | spinlock_unlock(&box->lock); |
423 | spinlock_unlock(&box->lock); |
422 | goto restart; |
424 | goto restart; |
423 | } |
425 | } |
424 | spinlock_unlock(&box->lock); |
426 | spinlock_unlock(&box->lock); |
425 | return request; |
427 | return request; |
426 | } |
428 | } |
427 | 429 | ||
428 | /** Answer all calls from list with EHANGUP answer. |
430 | /** Answer all calls from list with EHANGUP answer. |
429 | * |
431 | * |
430 | * @param lst Head of the list to be cleaned up. |
432 | * @param lst Head of the list to be cleaned up. |
431 | */ |
433 | */ |
432 | void ipc_cleanup_call_list(link_t *lst) |
434 | void ipc_cleanup_call_list(link_t *lst) |
433 | { |
435 | { |
434 | call_t *call; |
436 | call_t *call; |
435 | 437 | ||
436 | while (!list_empty(lst)) { |
438 | while (!list_empty(lst)) { |
437 | call = list_get_instance(lst->next, call_t, link); |
439 | call = list_get_instance(lst->next, call_t, link); |
438 | if (call->buffer) |
440 | if (call->buffer) |
439 | free(call->buffer); |
441 | free(call->buffer); |
440 | list_remove(&call->link); |
442 | list_remove(&call->link); |
441 | 443 | ||
442 | IPC_SET_RETVAL(call->data, EHANGUP); |
444 | IPC_SET_RETVAL(call->data, EHANGUP); |
443 | _ipc_answer_free_call(call); |
445 | _ipc_answer_free_call(call); |
444 | } |
446 | } |
445 | } |
447 | } |
446 | 448 | ||
447 | /** Disconnects all phones connected to an answerbox. |
449 | /** Disconnects all phones connected to an answerbox. |
448 | * |
450 | * |
449 | * @param box Answerbox to disconnect phones from. |
451 | * @param box Answerbox to disconnect phones from. |
450 | * @param notify_box If true, the answerbox will get a hangup message for |
452 | * @param notify_box If true, the answerbox will get a hangup message for |
451 | * each disconnected phone. |
453 | * each disconnected phone. |
452 | */ |
454 | */ |
453 | void ipc_answerbox_slam_phones(answerbox_t *box, bool notify_box) |
455 | void ipc_answerbox_slam_phones(answerbox_t *box, bool notify_box) |
454 | { |
456 | { |
455 | phone_t *phone; |
457 | phone_t *phone; |
456 | DEADLOCK_PROBE_INIT(p_phonelck); |
458 | DEADLOCK_PROBE_INIT(p_phonelck); |
457 | ipl_t ipl; |
459 | ipl_t ipl; |
458 | call_t *call; |
460 | call_t *call; |
459 | 461 | ||
460 | call = notify_box ? ipc_call_alloc(0) : NULL; |
462 | call = notify_box ? ipc_call_alloc(0) : NULL; |
461 | 463 | ||
462 | /* Disconnect all phones connected to our answerbox */ |
464 | /* Disconnect all phones connected to our answerbox */ |
463 | restart_phones: |
465 | restart_phones: |
464 | ipl = interrupts_disable(); |
466 | ipl = interrupts_disable(); |
465 | spinlock_lock(&box->lock); |
467 | spinlock_lock(&box->lock); |
466 | while (!list_empty(&box->connected_phones)) { |
468 | while (!list_empty(&box->connected_phones)) { |
467 | phone = list_get_instance(box->connected_phones.next, |
469 | phone = list_get_instance(box->connected_phones.next, |
468 | phone_t, link); |
470 | phone_t, link); |
469 | if (SYNCH_FAILED(mutex_trylock(&phone->lock))) { |
471 | if (SYNCH_FAILED(mutex_trylock(&phone->lock))) { |
470 | spinlock_unlock(&box->lock); |
472 | spinlock_unlock(&box->lock); |
471 | interrupts_restore(ipl); |
473 | interrupts_restore(ipl); |
472 | DEADLOCK_PROBE(p_phonelck, DEADLOCK_THRESHOLD); |
474 | DEADLOCK_PROBE(p_phonelck, DEADLOCK_THRESHOLD); |
473 | goto restart_phones; |
475 | goto restart_phones; |
474 | } |
476 | } |
475 | 477 | ||
476 | /* Disconnect phone */ |
478 | /* Disconnect phone */ |
477 | ASSERT(phone->state == IPC_PHONE_CONNECTED); |
479 | ASSERT(phone->state == IPC_PHONE_CONNECTED); |
478 | 480 | ||
479 | list_remove(&phone->link); |
481 | list_remove(&phone->link); |
480 | phone->state = IPC_PHONE_SLAMMED; |
482 | phone->state = IPC_PHONE_SLAMMED; |
481 | 483 | ||
482 | if (notify_box) { |
484 | if (notify_box) { |
483 | mutex_unlock(&phone->lock); |
485 | mutex_unlock(&phone->lock); |
484 | spinlock_unlock(&box->lock); |
486 | spinlock_unlock(&box->lock); |
485 | interrupts_restore(ipl); |
487 | interrupts_restore(ipl); |
486 | 488 | ||
487 | /* |
489 | /* |
488 | * Send one message to the answerbox for each |
490 | * Send one message to the answerbox for each |
489 | * phone. Used to make sure the kbox thread |
491 | * phone. Used to make sure the kbox thread |
490 | * wakes up after the last phone has been |
492 | * wakes up after the last phone has been |
491 | * disconnected. |
493 | * disconnected. |
492 | */ |
494 | */ |
493 | IPC_SET_METHOD(call->data, IPC_M_PHONE_HUNGUP); |
495 | IPC_SET_METHOD(call->data, IPC_M_PHONE_HUNGUP); |
494 | call->flags |= IPC_CALL_DISCARD_ANSWER; |
496 | call->flags |= IPC_CALL_DISCARD_ANSWER; |
495 | _ipc_call(phone, box, call); |
497 | _ipc_call(phone, box, call); |
496 | 498 | ||
497 | /* Allocate another call in advance */ |
499 | /* Allocate another call in advance */ |
498 | call = ipc_call_alloc(0); |
500 | call = ipc_call_alloc(0); |
499 | 501 | ||
500 | /* Must start again */ |
502 | /* Must start again */ |
501 | goto restart_phones; |
503 | goto restart_phones; |
502 | } |
504 | } |
503 | 505 | ||
504 | mutex_unlock(&phone->lock); |
506 | mutex_unlock(&phone->lock); |
505 | } |
507 | } |
506 | 508 | ||
507 | spinlock_unlock(&box->lock); |
509 | spinlock_unlock(&box->lock); |
508 | interrupts_restore(ipl); |
510 | interrupts_restore(ipl); |
509 | 511 | ||
510 | /* Free unused call */ |
512 | /* Free unused call */ |
511 | if (call) |
513 | if (call) |
512 | ipc_call_free(call); |
514 | ipc_call_free(call); |
513 | } |
515 | } |
514 | 516 | ||
515 | /** Cleans up all IPC communication of the current task. |
517 | /** Cleans up all IPC communication of the current task. |
516 | * |
518 | * |
517 | * Note: ipc_hangup sets returning answerbox to TASK->answerbox, you |
519 | * Note: ipc_hangup sets returning answerbox to TASK->answerbox, you |
518 | * have to change it as well if you want to cleanup other tasks than TASK. |
520 | * have to change it as well if you want to cleanup other tasks than TASK. |
519 | */ |
521 | */ |
520 | void ipc_cleanup(void) |
522 | void ipc_cleanup(void) |
521 | { |
523 | { |
522 | int i; |
524 | int i; |
523 | call_t *call; |
525 | call_t *call; |
524 | 526 | ||
525 | /* Disconnect all our phones ('ipc_phone_hangup') */ |
527 | /* Disconnect all our phones ('ipc_phone_hangup') */ |
526 | for (i = 0; i < IPC_MAX_PHONES; i++) |
528 | for (i = 0; i < IPC_MAX_PHONES; i++) |
527 | ipc_phone_hangup(&TASK->phones[i]); |
529 | ipc_phone_hangup(&TASK->phones[i]); |
528 | 530 | ||
- | 531 | /* Unsubscribe from any event notifications. */ |
|
- | 532 | event_cleanup_answerbox(&TASK->answerbox); |
|
- | 533 | ||
529 | /* Disconnect all connected irqs */ |
534 | /* Disconnect all connected irqs */ |
530 | ipc_irq_cleanup(&TASK->answerbox); |
535 | ipc_irq_cleanup(&TASK->answerbox); |
531 | 536 | ||
532 | /* Disconnect all phones connected to our regular answerbox */ |
537 | /* Disconnect all phones connected to our regular answerbox */ |
533 | ipc_answerbox_slam_phones(&TASK->answerbox, false); |
538 | ipc_answerbox_slam_phones(&TASK->answerbox, false); |
534 | 539 | ||
535 | #ifdef CONFIG_UDEBUG |
540 | #ifdef CONFIG_UDEBUG |
536 | /* Clean up kbox thread and communications */ |
541 | /* Clean up kbox thread and communications */ |
537 | ipc_kbox_cleanup(); |
542 | ipc_kbox_cleanup(); |
538 | #endif |
543 | #endif |
539 | 544 | ||
540 | /* Answer all messages in 'calls' and 'dispatched_calls' queues */ |
545 | /* Answer all messages in 'calls' and 'dispatched_calls' queues */ |
541 | spinlock_lock(&TASK->answerbox.lock); |
546 | spinlock_lock(&TASK->answerbox.lock); |
542 | ipc_cleanup_call_list(&TASK->answerbox.dispatched_calls); |
547 | ipc_cleanup_call_list(&TASK->answerbox.dispatched_calls); |
543 | ipc_cleanup_call_list(&TASK->answerbox.calls); |
548 | ipc_cleanup_call_list(&TASK->answerbox.calls); |
544 | spinlock_unlock(&TASK->answerbox.lock); |
549 | spinlock_unlock(&TASK->answerbox.lock); |
545 | 550 | ||
546 | /* Wait for all async answers to arrive */ |
551 | /* Wait for all async answers to arrive */ |
547 | while (1) { |
552 | while (1) { |
548 | /* Go through all phones, until all are FREE... */ |
553 | /* Go through all phones, until all are FREE... */ |
549 | /* Locking not needed, no one else should modify |
554 | /* Locking not needed, no one else should modify |
550 | * it, when we are in cleanup */ |
555 | * it, when we are in cleanup */ |
551 | for (i = 0; i < IPC_MAX_PHONES; i++) { |
556 | for (i = 0; i < IPC_MAX_PHONES; i++) { |
552 | if (TASK->phones[i].state == IPC_PHONE_HUNGUP && |
557 | if (TASK->phones[i].state == IPC_PHONE_HUNGUP && |
553 | atomic_get(&TASK->phones[i].active_calls) == 0) |
558 | atomic_get(&TASK->phones[i].active_calls) == 0) |
554 | TASK->phones[i].state = IPC_PHONE_FREE; |
559 | TASK->phones[i].state = IPC_PHONE_FREE; |
555 | 560 | ||
556 | /* Just for sure, we might have had some |
561 | /* Just for sure, we might have had some |
557 | * IPC_PHONE_CONNECTING phones */ |
562 | * IPC_PHONE_CONNECTING phones */ |
558 | if (TASK->phones[i].state == IPC_PHONE_CONNECTED) |
563 | if (TASK->phones[i].state == IPC_PHONE_CONNECTED) |
559 | ipc_phone_hangup(&TASK->phones[i]); |
564 | ipc_phone_hangup(&TASK->phones[i]); |
560 | /* If the hangup succeeded, it has sent a HANGUP |
565 | /* If the hangup succeeded, it has sent a HANGUP |
561 | * message, the IPC is now in HUNGUP state, we |
566 | * message, the IPC is now in HUNGUP state, we |
562 | * wait for the reply to come */ |
567 | * wait for the reply to come */ |
563 | 568 | ||
564 | if (TASK->phones[i].state != IPC_PHONE_FREE) |
569 | if (TASK->phones[i].state != IPC_PHONE_FREE) |
565 | break; |
570 | break; |
566 | } |
571 | } |
567 | /* Voila, got into cleanup */ |
572 | /* Voila, got into cleanup */ |
568 | if (i == IPC_MAX_PHONES) |
573 | if (i == IPC_MAX_PHONES) |
569 | break; |
574 | break; |
570 | 575 | ||
571 | call = ipc_wait_for_call(&TASK->answerbox, SYNCH_NO_TIMEOUT, |
576 | call = ipc_wait_for_call(&TASK->answerbox, SYNCH_NO_TIMEOUT, |
572 | SYNCH_FLAGS_NONE); |
577 | SYNCH_FLAGS_NONE); |
573 | ASSERT((call->flags & IPC_CALL_ANSWERED) || |
578 | ASSERT((call->flags & IPC_CALL_ANSWERED) || |
574 | (call->flags & IPC_CALL_NOTIF)); |
579 | (call->flags & IPC_CALL_NOTIF)); |
575 | ASSERT(!(call->flags & IPC_CALL_STATIC_ALLOC)); |
580 | ASSERT(!(call->flags & IPC_CALL_STATIC_ALLOC)); |
576 | 581 | ||
577 | /* |
582 | /* |
578 | * Record the receipt of this call in the current task's counter |
583 | * Record the receipt of this call in the current task's counter |
579 | * of active calls. IPC_M_PHONE_HUNGUP calls do not contribute |
584 | * of active calls. IPC_M_PHONE_HUNGUP calls do not contribute |
580 | * to this counter so do not record answers to them either. |
585 | * to this counter so do not record answers to them either. |
581 | */ |
586 | */ |
582 | if (!(call->flags & IPC_CALL_DISCARD_ANSWER)) |
587 | if (!(call->flags & IPC_CALL_DISCARD_ANSWER)) |
583 | atomic_dec(&TASK->active_calls); |
588 | atomic_dec(&TASK->active_calls); |
584 | ipc_call_free(call); |
589 | ipc_call_free(call); |
585 | } |
590 | } |
586 | } |
591 | } |
587 | 592 | ||
588 | 593 | ||
589 | /** Initilize IPC subsystem */ |
594 | /** Initilize IPC subsystem */ |
590 | void ipc_init(void) |
595 | void ipc_init(void) |
591 | { |
596 | { |
592 | ipc_call_slab = slab_cache_create("ipc_call", sizeof(call_t), 0, NULL, |
597 | ipc_call_slab = slab_cache_create("ipc_call", sizeof(call_t), 0, NULL, |
593 | NULL, 0); |
598 | NULL, 0); |
594 | } |
599 | } |
595 | 600 | ||
596 | 601 | ||
597 | /** List answerbox contents. |
602 | /** List answerbox contents. |
598 | * |
603 | * |
599 | * @param taskid Task ID. |
604 | * @param taskid Task ID. |
600 | */ |
605 | */ |
601 | void ipc_print_task(task_id_t taskid) |
606 | void ipc_print_task(task_id_t taskid) |
602 | { |
607 | { |
603 | task_t *task; |
608 | task_t *task; |
604 | int i; |
609 | int i; |
605 | call_t *call; |
610 | call_t *call; |
606 | link_t *tmp; |
611 | link_t *tmp; |
607 | 612 | ||
608 | spinlock_lock(&tasks_lock); |
613 | spinlock_lock(&tasks_lock); |
609 | task = task_find_by_id(taskid); |
614 | task = task_find_by_id(taskid); |
610 | if (task) |
615 | if (task) |
611 | spinlock_lock(&task->lock); |
616 | spinlock_lock(&task->lock); |
612 | spinlock_unlock(&tasks_lock); |
617 | spinlock_unlock(&tasks_lock); |
613 | if (!task) |
618 | if (!task) |
614 | return; |
619 | return; |
615 | 620 | ||
616 | /* Print opened phones & details */ |
621 | /* Print opened phones & details */ |
617 | printf("PHONE:\n"); |
622 | printf("PHONE:\n"); |
618 | for (i = 0; i < IPC_MAX_PHONES; i++) { |
623 | for (i = 0; i < IPC_MAX_PHONES; i++) { |
619 | if (SYNCH_FAILED(mutex_trylock(&task->phones[i].lock))) { |
624 | if (SYNCH_FAILED(mutex_trylock(&task->phones[i].lock))) { |
620 | printf("%d: mutex busy\n", i); |
625 | printf("%d: mutex busy\n", i); |
621 | continue; |
626 | continue; |
622 | } |
627 | } |
623 | if (task->phones[i].state != IPC_PHONE_FREE) { |
628 | if (task->phones[i].state != IPC_PHONE_FREE) { |
624 | printf("%d: ", i); |
629 | printf("%d: ", i); |
625 | switch (task->phones[i].state) { |
630 | switch (task->phones[i].state) { |
626 | case IPC_PHONE_CONNECTING: |
631 | case IPC_PHONE_CONNECTING: |
627 | printf("connecting "); |
632 | printf("connecting "); |
628 | break; |
633 | break; |
629 | case IPC_PHONE_CONNECTED: |
634 | case IPC_PHONE_CONNECTED: |
630 | printf("connected to: %p ", |
635 | printf("connected to: %p ", |
631 | task->phones[i].callee); |
636 | task->phones[i].callee); |
632 | break; |
637 | break; |
633 | case IPC_PHONE_SLAMMED: |
638 | case IPC_PHONE_SLAMMED: |
634 | printf("slammed by: %p ", |
639 | printf("slammed by: %p ", |
635 | task->phones[i].callee); |
640 | task->phones[i].callee); |
636 | break; |
641 | break; |
637 | case IPC_PHONE_HUNGUP: |
642 | case IPC_PHONE_HUNGUP: |
638 | printf("hung up - was: %p ", |
643 | printf("hung up - was: %p ", |
639 | task->phones[i].callee); |
644 | task->phones[i].callee); |
640 | break; |
645 | break; |
641 | default: |
646 | default: |
642 | break; |
647 | break; |
643 | } |
648 | } |
644 | printf("active: %ld\n", |
649 | printf("active: %ld\n", |
645 | atomic_get(&task->phones[i].active_calls)); |
650 | atomic_get(&task->phones[i].active_calls)); |
646 | } |
651 | } |
647 | mutex_unlock(&task->phones[i].lock); |
652 | mutex_unlock(&task->phones[i].lock); |
648 | } |
653 | } |
649 | 654 | ||
650 | 655 | ||
651 | /* Print answerbox - calls */ |
656 | /* Print answerbox - calls */ |
652 | spinlock_lock(&task->answerbox.lock); |
657 | spinlock_lock(&task->answerbox.lock); |
653 | printf("ABOX - CALLS:\n"); |
658 | printf("ABOX - CALLS:\n"); |
654 | for (tmp = task->answerbox.calls.next; tmp != &task->answerbox.calls; |
659 | for (tmp = task->answerbox.calls.next; tmp != &task->answerbox.calls; |
655 | tmp = tmp->next) { |
660 | tmp = tmp->next) { |
656 | call = list_get_instance(tmp, call_t, link); |
661 | call = list_get_instance(tmp, call_t, link); |
657 | printf("Callid: %p Srctask:%" PRIu64 " M:%" PRIun |
662 | printf("Callid: %p Srctask:%" PRIu64 " M:%" PRIun |
658 | " A1:%" PRIun " A2:%" PRIun " A3:%" PRIun |
663 | " A1:%" PRIun " A2:%" PRIun " A3:%" PRIun |
659 | " A4:%" PRIun " A5:%" PRIun " Flags:%x\n", call, |
664 | " A4:%" PRIun " A5:%" PRIun " Flags:%x\n", call, |
660 | call->sender->taskid, |
665 | call->sender->taskid, |
661 | IPC_GET_METHOD(call->data), IPC_GET_ARG1(call->data), |
666 | IPC_GET_METHOD(call->data), IPC_GET_ARG1(call->data), |
662 | IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), |
667 | IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), |
663 | IPC_GET_ARG4(call->data), IPC_GET_ARG5(call->data), |
668 | IPC_GET_ARG4(call->data), IPC_GET_ARG5(call->data), |
664 | call->flags); |
669 | call->flags); |
665 | } |
670 | } |
666 | /* Print answerbox - calls */ |
671 | /* Print answerbox - calls */ |
667 | printf("ABOX - DISPATCHED CALLS:\n"); |
672 | printf("ABOX - DISPATCHED CALLS:\n"); |
668 | for (tmp = task->answerbox.dispatched_calls.next; |
673 | for (tmp = task->answerbox.dispatched_calls.next; |
669 | tmp != &task->answerbox.dispatched_calls; |
674 | tmp != &task->answerbox.dispatched_calls; |
670 | tmp = tmp->next) { |
675 | tmp = tmp->next) { |
671 | call = list_get_instance(tmp, call_t, link); |
676 | call = list_get_instance(tmp, call_t, link); |
672 | printf("Callid: %p Srctask:%" PRIu64 " M:%" PRIun |
677 | printf("Callid: %p Srctask:%" PRIu64 " M:%" PRIun |
673 | " A1:%" PRIun " A2:%" PRIun " A3:%" PRIun |
678 | " A1:%" PRIun " A2:%" PRIun " A3:%" PRIun |
674 | " A4:%" PRIun " A5:%" PRIun " Flags:%x\n", call, |
679 | " A4:%" PRIun " A5:%" PRIun " Flags:%x\n", call, |
675 | call->sender->taskid, |
680 | call->sender->taskid, |
676 | IPC_GET_METHOD(call->data), IPC_GET_ARG1(call->data), |
681 | IPC_GET_METHOD(call->data), IPC_GET_ARG1(call->data), |
677 | IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), |
682 | IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), |
678 | IPC_GET_ARG4(call->data), IPC_GET_ARG5(call->data), |
683 | IPC_GET_ARG4(call->data), IPC_GET_ARG5(call->data), |
679 | call->flags); |
684 | call->flags); |
680 | } |
685 | } |
681 | /* Print answerbox - calls */ |
686 | /* Print answerbox - calls */ |
682 | printf("ABOX - ANSWERS:\n"); |
687 | printf("ABOX - ANSWERS:\n"); |
683 | for (tmp = task->answerbox.answers.next; |
688 | for (tmp = task->answerbox.answers.next; |
684 | tmp != &task->answerbox.answers; |
689 | tmp != &task->answerbox.answers; |
685 | tmp = tmp->next) { |
690 | tmp = tmp->next) { |
686 | call = list_get_instance(tmp, call_t, link); |
691 | call = list_get_instance(tmp, call_t, link); |
687 | printf("Callid:%p M:%" PRIun " A1:%" PRIun " A2:%" PRIun |
692 | printf("Callid:%p M:%" PRIun " A1:%" PRIun " A2:%" PRIun |
688 | " A3:%" PRIun " A4:%" PRIun " A5:%" PRIun " Flags:%x\n", |
693 | " A3:%" PRIun " A4:%" PRIun " A5:%" PRIun " Flags:%x\n", |
689 | call, IPC_GET_METHOD(call->data), IPC_GET_ARG1(call->data), |
694 | call, IPC_GET_METHOD(call->data), IPC_GET_ARG1(call->data), |
690 | IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), |
695 | IPC_GET_ARG2(call->data), IPC_GET_ARG3(call->data), |
691 | IPC_GET_ARG4(call->data), IPC_GET_ARG5(call->data), |
696 | IPC_GET_ARG4(call->data), IPC_GET_ARG5(call->data), |
692 | call->flags); |
697 | call->flags); |
693 | } |
698 | } |
694 | 699 | ||
695 | spinlock_unlock(&task->answerbox.lock); |
700 | spinlock_unlock(&task->answerbox.lock); |
696 | spinlock_unlock(&task->lock); |
701 | spinlock_unlock(&task->lock); |
697 | } |
702 | } |
698 | 703 | ||
699 | /** @} |
704 | /** @} |
700 | */ |
705 | */ |
701 | 706 |