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1 | /* |
1 | /* |
2 | * Copyright (c) 2007 Josef Cejka |
2 | * Copyright (c) 2007 Josef Cejka |
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 | /** |
29 | /** |
30 | * @defgroup devmap Device mapper. |
30 | * @defgroup devmap Device mapper. |
31 | * @brief HelenOS device mapper. |
31 | * @brief HelenOS device mapper. |
32 | * @{ |
32 | * @{ |
33 | */ |
33 | */ |
34 | 34 | ||
35 | /** @file |
35 | /** @file |
36 | */ |
36 | */ |
37 | 37 | ||
38 | #include <ipc/services.h> |
38 | #include <ipc/services.h> |
39 | #include <ipc/ns.h> |
39 | #include <ipc/ns.h> |
40 | #include <async.h> |
40 | #include <async.h> |
41 | #include <stdio.h> |
41 | #include <stdio.h> |
42 | #include <errno.h> |
42 | #include <errno.h> |
43 | #include <bool.h> |
43 | #include <bool.h> |
- | 44 | #include <fibril_sync.h> |
|
44 | #include <stdlib.h> |
45 | #include <stdlib.h> |
45 | #include <string.h> |
46 | #include <string.h> |
46 | #include <ipc/devmap.h> |
47 | #include <ipc/devmap.h> |
47 | 48 | ||
48 | #define NAME "devmap" |
49 | #define NAME "devmap" |
49 | 50 | ||
50 | /** Representation of device driver. |
51 | /** Representation of device driver. |
51 | * |
52 | * |
52 | * Each driver is responsible for a set of devices. |
53 | * Each driver is responsible for a set of devices. |
53 | * |
54 | * |
54 | */ |
55 | */ |
55 | typedef struct { |
56 | typedef struct { |
56 | /** Pointers to previous and next drivers in linked list */ |
57 | /** Pointers to previous and next drivers in linked list */ |
57 | link_t drivers; |
58 | link_t drivers; |
58 | /** Pointer to the linked list of devices controlled by this driver */ |
59 | /** Pointer to the linked list of devices controlled by this driver */ |
59 | link_t devices; |
60 | link_t devices; |
60 | /** Phone asociated with this driver */ |
61 | /** Phone asociated with this driver */ |
61 | ipcarg_t phone; |
62 | ipcarg_t phone; |
62 | /** Device driver name */ |
63 | /** Device driver name */ |
63 | char *name; |
64 | char *name; |
- | 65 | /** Fibril mutex for list of devices owned by this driver */ |
|
- | 66 | fibril_mutex_t devices_mutex; |
|
64 | } devmap_driver_t; |
67 | } devmap_driver_t; |
65 | 68 | ||
66 | /** Info about registered device |
69 | /** Info about registered device |
67 | * |
70 | * |
68 | */ |
71 | */ |
69 | typedef struct { |
72 | typedef struct { |
70 | /** Pointer to the previous and next device in the list of all devices */ |
73 | /** Pointer to the previous and next device in the list of all devices */ |
71 | link_t devices; |
74 | link_t devices; |
72 | /** Pointer to the previous and next device in the list of devices |
75 | /** Pointer to the previous and next device in the list of devices |
73 | owned by one driver */ |
76 | owned by one driver */ |
74 | link_t driver_devices; |
77 | link_t driver_devices; |
75 | /** Unique device identifier */ |
78 | /** Unique device identifier */ |
76 | dev_handle_t handle; |
79 | dev_handle_t handle; |
77 | /** Device name */ |
80 | /** Device name */ |
78 | char *name; |
81 | char *name; |
79 | /** Device driver handling this device */ |
82 | /** Device driver handling this device */ |
80 | devmap_driver_t *driver; |
83 | devmap_driver_t *driver; |
81 | } devmap_device_t; |
84 | } devmap_device_t; |
82 | 85 | ||
83 | /** Pending lookup structure. */ |
86 | /** Pending lookup structure. */ |
84 | typedef struct { |
87 | typedef struct { |
85 | link_t link; |
88 | link_t link; |
86 | char *name; /**< Device name */ |
89 | char *name; /**< Device name */ |
87 | ipc_callid_t callid; /**< Call ID waiting for the lookup */ |
90 | ipc_callid_t callid; /**< Call ID waiting for the lookup */ |
88 | } pending_req_t; |
91 | } pending_req_t; |
89 | 92 | ||
90 | LIST_INITIALIZE(devices_list); |
93 | LIST_INITIALIZE(devices_list); |
91 | LIST_INITIALIZE(drivers_list); |
94 | LIST_INITIALIZE(drivers_list); |
92 | LIST_INITIALIZE(pending_req); |
95 | LIST_INITIALIZE(pending_req); |
93 | 96 | ||
- | 97 | /* Locking order: |
|
- | 98 | * drivers_list_mutex |
|
- | 99 | * devices_list_mutex |
|
- | 100 | * (devmap_driver_t *)->devices_mutex |
|
- | 101 | * create_handle_mutex |
|
- | 102 | **/ |
|
- | 103 | ||
- | 104 | static FIBRIL_MUTEX_INITIALIZE(devices_list_mutex); |
|
- | 105 | static FIBRIL_MUTEX_INITIALIZE(drivers_list_mutex); |
|
- | 106 | static FIBRIL_MUTEX_INITIALIZE(create_handle_mutex); |
|
- | 107 | ||
94 | static dev_handle_t last_handle = 0; |
108 | static dev_handle_t last_handle = 0; |
95 | 109 | ||
96 | static dev_handle_t devmap_create_handle(void) |
110 | static dev_handle_t devmap_create_handle(void) |
97 | { |
111 | { |
98 | /* TODO: allow reusing old handles after their unregistration |
112 | /* TODO: allow reusing old handles after their unregistration |
99 | * and implement some version of LRU algorithm, avoid overflow |
113 | * and implement some version of LRU algorithm, avoid overflow |
100 | */ |
114 | */ |
101 | 115 | ||
- | 116 | fibril_mutex_lock(&create_handle_mutex); |
|
102 | last_handle++; |
117 | last_handle++; |
- | 118 | fibril_mutex_unlock(&create_handle_mutex); |
|
103 | 119 | ||
104 | return last_handle; |
120 | return last_handle; |
105 | } |
121 | } |
106 | 122 | ||
107 | /** Find device with given name. |
123 | /** Find device with given name. |
108 | * |
124 | * |
109 | */ |
125 | */ |
110 | static devmap_device_t *devmap_device_find_name(const char *name) |
126 | static devmap_device_t *devmap_device_find_name(const char *name) |
111 | { |
127 | { |
112 | link_t *item = devices_list.next; |
128 | link_t *item = devices_list.next; |
113 | devmap_device_t *device = NULL; |
129 | devmap_device_t *device = NULL; |
114 | 130 | ||
115 | while (item != &devices_list) { |
131 | while (item != &devices_list) { |
116 | device = list_get_instance(item, devmap_device_t, devices); |
132 | device = list_get_instance(item, devmap_device_t, devices); |
117 | if (str_cmp(device->name, name) == 0) |
133 | if (str_cmp(device->name, name) == 0) |
118 | break; |
134 | break; |
119 | item = item->next; |
135 | item = item->next; |
120 | } |
136 | } |
121 | 137 | ||
122 | if (item == &devices_list) |
138 | if (item == &devices_list) |
123 | return NULL; |
139 | return NULL; |
124 | 140 | ||
125 | device = list_get_instance(item, devmap_device_t, devices); |
141 | device = list_get_instance(item, devmap_device_t, devices); |
126 | return device; |
142 | return device; |
127 | } |
143 | } |
128 | 144 | ||
129 | /** Find device with given handle. |
145 | /** Find device with given handle. |
130 | * |
146 | * |
131 | * @todo: use hash table |
147 | * @todo: use hash table |
132 | * |
148 | * |
133 | */ |
149 | */ |
134 | static devmap_device_t *devmap_device_find_handle(dev_handle_t handle) |
150 | static devmap_device_t *devmap_device_find_handle(dev_handle_t handle) |
135 | { |
151 | { |
- | 152 | fibril_mutex_lock(&devices_list_mutex); |
|
- | 153 | ||
136 | link_t *item = (&devices_list)->next; |
154 | link_t *item = (&devices_list)->next; |
137 | devmap_device_t *device = NULL; |
155 | devmap_device_t *device = NULL; |
138 | 156 | ||
139 | while (item != &devices_list) { |
157 | while (item != &devices_list) { |
140 | device = list_get_instance(item, devmap_device_t, devices); |
158 | device = list_get_instance(item, devmap_device_t, devices); |
141 | if (device->handle == handle) |
159 | if (device->handle == handle) |
142 | break; |
160 | break; |
143 | item = item->next; |
161 | item = item->next; |
144 | } |
162 | } |
145 | 163 | ||
146 | if (item == &devices_list) |
164 | if (item == &devices_list) { |
- | 165 | fibril_mutex_unlock(&devices_list_mutex); |
|
147 | return NULL; |
166 | return NULL; |
- | 167 | } |
|
148 | 168 | ||
149 | device = list_get_instance(item, devmap_device_t, devices); |
169 | device = list_get_instance(item, devmap_device_t, devices); |
150 | 170 | ||
- | 171 | fibril_mutex_unlock(&devices_list_mutex); |
|
- | 172 | ||
151 | return device; |
173 | return device; |
152 | } |
174 | } |
153 | 175 | ||
154 | /** |
176 | /** |
155 | * |
177 | * |
156 | * Unregister device and free it. It's assumed that driver's device list is |
178 | * Unregister device and free it. It's assumed that driver's device list is |
157 | * already locked. |
179 | * already locked. |
158 | * |
180 | * |
159 | */ |
181 | */ |
160 | static int devmap_device_unregister_core(devmap_device_t *device) |
182 | static int devmap_device_unregister_core(devmap_device_t *device) |
161 | { |
183 | { |
162 | list_remove(&(device->devices)); |
184 | list_remove(&(device->devices)); |
163 | list_remove(&(device->driver_devices)); |
185 | list_remove(&(device->driver_devices)); |
164 | 186 | ||
165 | free(device->name); |
187 | free(device->name); |
166 | free(device); |
188 | free(device); |
167 | 189 | ||
168 | return EOK; |
190 | return EOK; |
169 | } |
191 | } |
170 | 192 | ||
171 | /** |
193 | /** |
172 | * |
194 | * |
173 | * Read info about new driver and add it into linked list of registered |
195 | * Read info about new driver and add it into linked list of registered |
174 | * drivers. |
196 | * drivers. |
175 | * |
197 | * |
176 | */ |
198 | */ |
177 | static void devmap_driver_register(devmap_driver_t **odriver) |
199 | static void devmap_driver_register(devmap_driver_t **odriver) |
178 | { |
200 | { |
179 | *odriver = NULL; |
201 | *odriver = NULL; |
180 | 202 | ||
181 | ipc_call_t icall; |
203 | ipc_call_t icall; |
182 | ipc_callid_t iid = async_get_call(&icall); |
204 | ipc_callid_t iid = async_get_call(&icall); |
183 | 205 | ||
184 | if (IPC_GET_METHOD(icall) != DEVMAP_DRIVER_REGISTER) { |
206 | if (IPC_GET_METHOD(icall) != DEVMAP_DRIVER_REGISTER) { |
185 | ipc_answer_0(iid, EREFUSED); |
207 | ipc_answer_0(iid, EREFUSED); |
186 | return; |
208 | return; |
187 | } |
209 | } |
188 | 210 | ||
189 | devmap_driver_t *driver = (devmap_driver_t *) malloc(sizeof(devmap_driver_t)); |
211 | devmap_driver_t *driver = (devmap_driver_t *) malloc(sizeof(devmap_driver_t)); |
190 | 212 | ||
191 | if (driver == NULL) { |
213 | if (driver == NULL) { |
192 | ipc_answer_0(iid, ENOMEM); |
214 | ipc_answer_0(iid, ENOMEM); |
193 | return; |
215 | return; |
194 | } |
216 | } |
195 | 217 | ||
196 | /* |
218 | /* |
197 | * Get driver name |
219 | * Get driver name |
198 | */ |
220 | */ |
199 | ipc_callid_t callid; |
221 | ipc_callid_t callid; |
200 | size_t name_size; |
222 | size_t name_size; |
201 | if (!ipc_data_write_receive(&callid, &name_size)) { |
223 | if (!ipc_data_write_receive(&callid, &name_size)) { |
202 | free(driver); |
224 | free(driver); |
203 | ipc_answer_0(callid, EREFUSED); |
225 | ipc_answer_0(callid, EREFUSED); |
204 | ipc_answer_0(iid, EREFUSED); |
226 | ipc_answer_0(iid, EREFUSED); |
205 | return; |
227 | return; |
206 | } |
228 | } |
207 | 229 | ||
208 | if (name_size > DEVMAP_NAME_MAXLEN) { |
230 | if (name_size > DEVMAP_NAME_MAXLEN) { |
209 | free(driver); |
231 | free(driver); |
210 | ipc_answer_0(callid, EINVAL); |
232 | ipc_answer_0(callid, EINVAL); |
211 | ipc_answer_0(iid, EREFUSED); |
233 | ipc_answer_0(iid, EREFUSED); |
212 | return; |
234 | return; |
213 | } |
235 | } |
214 | 236 | ||
215 | /* |
237 | /* |
216 | * Allocate buffer for device name. |
238 | * Allocate buffer for device name. |
217 | */ |
239 | */ |
218 | driver->name = (char *) malloc(name_size + 1); |
240 | driver->name = (char *) malloc(name_size + 1); |
219 | if (driver->name == NULL) { |
241 | if (driver->name == NULL) { |
220 | free(driver); |
242 | free(driver); |
221 | ipc_answer_0(callid, ENOMEM); |
243 | ipc_answer_0(callid, ENOMEM); |
222 | ipc_answer_0(iid, EREFUSED); |
244 | ipc_answer_0(iid, EREFUSED); |
223 | return; |
245 | return; |
224 | } |
246 | } |
225 | 247 | ||
226 | /* |
248 | /* |
227 | * Send confirmation to sender and get data into buffer. |
249 | * Send confirmation to sender and get data into buffer. |
228 | */ |
250 | */ |
229 | if (ipc_data_write_finalize(callid, driver->name, name_size) != EOK) { |
251 | if (ipc_data_write_finalize(callid, driver->name, name_size) != EOK) { |
230 | free(driver->name); |
252 | free(driver->name); |
231 | free(driver); |
253 | free(driver); |
232 | ipc_answer_0(iid, EREFUSED); |
254 | ipc_answer_0(iid, EREFUSED); |
233 | return; |
255 | return; |
234 | } |
256 | } |
235 | 257 | ||
236 | driver->name[name_size] = 0; |
258 | driver->name[name_size] = 0; |
237 | 259 | ||
- | 260 | /* Initialize mutex for list of devices owned by this driver */ |
|
- | 261 | fibril_mutex_initialize(&driver->devices_mutex); |
|
- | 262 | ||
238 | /* |
263 | /* |
239 | * Initialize list of asociated devices |
264 | * Initialize list of asociated devices |
240 | */ |
265 | */ |
241 | list_initialize(&(driver->devices)); |
266 | list_initialize(&driver->devices); |
242 | 267 | ||
243 | /* |
268 | /* |
244 | * Create connection to the driver |
269 | * Create connection to the driver |
245 | */ |
270 | */ |
246 | ipc_call_t call; |
271 | ipc_call_t call; |
247 | callid = async_get_call(&call); |
272 | callid = async_get_call(&call); |
248 | 273 | ||
249 | if (IPC_GET_METHOD(call) != IPC_M_CONNECT_TO_ME) { |
274 | if (IPC_GET_METHOD(call) != IPC_M_CONNECT_TO_ME) { |
250 | ipc_answer_0(callid, ENOTSUP); |
275 | ipc_answer_0(callid, ENOTSUP); |
251 | 276 | ||
252 | free(driver->name); |
277 | free(driver->name); |
253 | free(driver); |
278 | free(driver); |
254 | ipc_answer_0(iid, ENOTSUP); |
279 | ipc_answer_0(iid, ENOTSUP); |
255 | return; |
280 | return; |
256 | } |
281 | } |
257 | 282 | ||
258 | driver->phone = IPC_GET_ARG5(call); |
283 | driver->phone = IPC_GET_ARG5(call); |
259 | 284 | ||
260 | ipc_answer_0(callid, EOK); |
285 | ipc_answer_0(callid, EOK); |
261 | 286 | ||
262 | list_initialize(&(driver->drivers)); |
287 | list_initialize(&(driver->drivers)); |
263 | 288 | ||
- | 289 | fibril_mutex_lock(&drivers_list_mutex); |
|
- | 290 | ||
264 | /* TODO: |
291 | /* TODO: |
265 | * check that no driver with name equal to driver->name is registered |
292 | * check that no driver with name equal to driver->name is registered |
266 | */ |
293 | */ |
267 | 294 | ||
268 | /* |
295 | /* |
269 | * Insert new driver into list of registered drivers |
296 | * Insert new driver into list of registered drivers |
270 | */ |
297 | */ |
271 | list_append(&(driver->drivers), &drivers_list); |
298 | list_append(&(driver->drivers), &drivers_list); |
- | 299 | fibril_mutex_unlock(&drivers_list_mutex); |
|
272 | 300 | ||
273 | ipc_answer_0(iid, EOK); |
301 | ipc_answer_0(iid, EOK); |
274 | 302 | ||
275 | *odriver = driver; |
303 | *odriver = driver; |
276 | } |
304 | } |
277 | 305 | ||
278 | /** |
306 | /** |
279 | * Unregister device driver, unregister all its devices and free driver |
307 | * Unregister device driver, unregister all its devices and free driver |
280 | * structure. |
308 | * structure. |
281 | * |
309 | * |
282 | */ |
310 | */ |
283 | static int devmap_driver_unregister(devmap_driver_t *driver) |
311 | static int devmap_driver_unregister(devmap_driver_t *driver) |
284 | { |
312 | { |
285 | if (driver == NULL) |
313 | if (driver == NULL) |
286 | return EEXISTS; |
314 | return EEXISTS; |
287 | 315 | ||
- | 316 | fibril_mutex_lock(&drivers_list_mutex); |
|
- | 317 | ||
288 | if (driver->phone != 0) |
318 | if (driver->phone != 0) |
289 | ipc_hangup(driver->phone); |
319 | ipc_hangup(driver->phone); |
290 | 320 | ||
291 | /* Remove it from list of drivers */ |
321 | /* Remove it from list of drivers */ |
292 | list_remove(&(driver->drivers)); |
322 | list_remove(&(driver->drivers)); |
293 | 323 | ||
- | 324 | /* Unregister all its devices */ |
|
- | 325 | fibril_mutex_lock(&devices_list_mutex); |
|
- | 326 | fibril_mutex_lock(&driver->devices_mutex); |
|
- | 327 | ||
294 | while (!list_empty(&(driver->devices))) { |
328 | while (!list_empty(&(driver->devices))) { |
295 | devmap_device_t *device = list_get_instance(driver->devices.next, |
329 | devmap_device_t *device = list_get_instance(driver->devices.next, |
296 | devmap_device_t, driver_devices); |
330 | devmap_device_t, driver_devices); |
297 | devmap_device_unregister_core(device); |
331 | devmap_device_unregister_core(device); |
298 | } |
332 | } |
299 | 333 | ||
- | 334 | fibril_mutex_unlock(&driver->devices_mutex); |
|
- | 335 | fibril_mutex_unlock(&devices_list_mutex); |
|
- | 336 | fibril_mutex_unlock(&drivers_list_mutex); |
|
- | 337 | ||
300 | /* free name and driver */ |
338 | /* free name and driver */ |
301 | if (driver->name != NULL) |
339 | if (driver->name != NULL) |
302 | free(driver->name); |
340 | free(driver->name); |
303 | 341 | ||
304 | free(driver); |
342 | free(driver); |
305 | 343 | ||
306 | return EOK; |
344 | return EOK; |
307 | } |
345 | } |
308 | 346 | ||
309 | 347 | ||
310 | /** Process pending lookup requests */ |
348 | /** Process pending lookup requests */ |
311 | static void process_pending_lookup(void) |
349 | static void process_pending_lookup(void) |
312 | { |
350 | { |
313 | async_serialize_start(); |
- | |
314 | - | ||
315 | link_t *cur; |
351 | link_t *cur; |
316 | 352 | ||
317 | loop: |
353 | loop: |
318 | for (cur = pending_req.next; cur != &pending_req; cur = cur->next) { |
354 | for (cur = pending_req.next; cur != &pending_req; cur = cur->next) { |
319 | pending_req_t *pr = list_get_instance(cur, pending_req_t, link); |
355 | pending_req_t *pr = list_get_instance(cur, pending_req_t, link); |
320 | 356 | ||
321 | const devmap_device_t *dev = devmap_device_find_name(pr->name); |
357 | const devmap_device_t *dev = devmap_device_find_name(pr->name); |
322 | if (!dev) |
358 | if (!dev) |
323 | continue; |
359 | continue; |
324 | 360 | ||
325 | ipc_answer_1(pr->callid, EOK, dev->handle); |
361 | ipc_answer_1(pr->callid, EOK, dev->handle); |
326 | 362 | ||
327 | free(pr->name); |
363 | free(pr->name); |
328 | list_remove(cur); |
364 | list_remove(cur); |
329 | free(pr); |
365 | free(pr); |
330 | 366 | ||
331 | goto loop; |
367 | goto loop; |
332 | } |
368 | } |
333 | - | ||
334 | async_serialize_end(); |
- | |
335 | } |
369 | } |
336 | 370 | ||
337 | 371 | ||
338 | /** Register instance of device |
372 | /** Register instance of device |
339 | * |
373 | * |
340 | */ |
374 | */ |
341 | static void devmap_device_register(ipc_callid_t iid, ipc_call_t *icall, |
375 | static void devmap_device_register(ipc_callid_t iid, ipc_call_t *icall, |
342 | devmap_driver_t *driver) |
376 | devmap_driver_t *driver) |
343 | { |
377 | { |
344 | if (driver == NULL) { |
378 | if (driver == NULL) { |
345 | ipc_answer_0(iid, EREFUSED); |
379 | ipc_answer_0(iid, EREFUSED); |
346 | return; |
380 | return; |
347 | } |
381 | } |
348 | 382 | ||
349 | /* Create new device entry */ |
383 | /* Create new device entry */ |
350 | devmap_device_t *device = (devmap_device_t *) malloc(sizeof(devmap_device_t)); |
384 | devmap_device_t *device = (devmap_device_t *) malloc(sizeof(devmap_device_t)); |
351 | if (device == NULL) { |
385 | if (device == NULL) { |
352 | ipc_answer_0(iid, ENOMEM); |
386 | ipc_answer_0(iid, ENOMEM); |
353 | return; |
387 | return; |
354 | } |
388 | } |
355 | 389 | ||
356 | /* Get device name */ |
390 | /* Get device name */ |
357 | ipc_callid_t callid; |
391 | ipc_callid_t callid; |
358 | size_t size; |
392 | size_t size; |
359 | if (!ipc_data_write_receive(&callid, &size)) { |
393 | if (!ipc_data_write_receive(&callid, &size)) { |
360 | free(device); |
394 | free(device); |
361 | ipc_answer_0(iid, EREFUSED); |
395 | ipc_answer_0(iid, EREFUSED); |
362 | return; |
396 | return; |
363 | } |
397 | } |
364 | 398 | ||
365 | if (size > DEVMAP_NAME_MAXLEN) { |
399 | if (size > DEVMAP_NAME_MAXLEN) { |
366 | free(device); |
400 | free(device); |
367 | ipc_answer_0(callid, EINVAL); |
401 | ipc_answer_0(callid, EINVAL); |
368 | ipc_answer_0(iid, EREFUSED); |
402 | ipc_answer_0(iid, EREFUSED); |
369 | return; |
403 | return; |
370 | } |
404 | } |
371 | 405 | ||
372 | /* +1 for terminating \0 */ |
406 | /* +1 for terminating \0 */ |
373 | device->name = (char *) malloc(size + 1); |
407 | device->name = (char *) malloc(size + 1); |
374 | 408 | ||
375 | if (device->name == NULL) { |
409 | if (device->name == NULL) { |
376 | free(device); |
410 | free(device); |
377 | ipc_answer_0(callid, ENOMEM); |
411 | ipc_answer_0(callid, ENOMEM); |
378 | ipc_answer_0(iid, EREFUSED); |
412 | ipc_answer_0(iid, EREFUSED); |
379 | return; |
413 | return; |
380 | } |
414 | } |
381 | 415 | ||
382 | ipc_data_write_finalize(callid, device->name, size); |
416 | ipc_data_write_finalize(callid, device->name, size); |
383 | device->name[size] = 0; |
417 | device->name[size] = 0; |
384 | 418 | ||
385 | list_initialize(&(device->devices)); |
419 | list_initialize(&(device->devices)); |
386 | list_initialize(&(device->driver_devices)); |
420 | list_initialize(&(device->driver_devices)); |
387 | 421 | ||
- | 422 | fibril_mutex_lock(&devices_list_mutex); |
|
- | 423 | ||
388 | /* Check that device with such name is not already registered */ |
424 | /* Check that device with such name is not already registered */ |
389 | if (NULL != devmap_device_find_name(device->name)) { |
425 | if (NULL != devmap_device_find_name(device->name)) { |
390 | printf(NAME ": Device '%s' already registered\n", device->name); |
426 | printf(NAME ": Device '%s' already registered\n", device->name); |
- | 427 | fibril_mutex_unlock(&devices_list_mutex); |
|
391 | free(device->name); |
428 | free(device->name); |
392 | free(device); |
429 | free(device); |
393 | ipc_answer_0(iid, EEXISTS); |
430 | ipc_answer_0(iid, EEXISTS); |
394 | return; |
431 | return; |
395 | } |
432 | } |
396 | 433 | ||
397 | /* Get unique device handle */ |
434 | /* Get unique device handle */ |
398 | device->handle = devmap_create_handle(); |
435 | device->handle = devmap_create_handle(); |
399 | 436 | ||
400 | device->driver = driver; |
437 | device->driver = driver; |
401 | 438 | ||
402 | /* Insert device into list of all devices */ |
439 | /* Insert device into list of all devices */ |
403 | list_append(&device->devices, &devices_list); |
440 | list_append(&device->devices, &devices_list); |
404 | 441 | ||
- | 442 | /* Insert device into list of devices that belog to one driver */ |
|
- | 443 | fibril_mutex_lock(&device->driver->devices_mutex); |
|
- | 444 | ||
405 | list_append(&device->driver_devices, &device->driver->devices); |
445 | list_append(&device->driver_devices, &device->driver->devices); |
406 | 446 | ||
- | 447 | fibril_mutex_unlock(&device->driver->devices_mutex); |
|
- | 448 | fibril_mutex_unlock(&devices_list_mutex); |
|
- | 449 | ||
407 | ipc_answer_1(iid, EOK, device->handle); |
450 | ipc_answer_1(iid, EOK, device->handle); |
408 | } |
451 | } |
409 | 452 | ||
410 | /** |
453 | /** |
411 | * |
454 | * |
412 | */ |
455 | */ |
413 | static int devmap_device_unregister(ipc_callid_t iid, ipc_call_t *icall, |
456 | static int devmap_device_unregister(ipc_callid_t iid, ipc_call_t *icall, |
414 | devmap_driver_t *driver) |
457 | devmap_driver_t *driver) |
415 | { |
458 | { |
416 | /* TODO */ |
459 | /* TODO */ |
417 | return EOK; |
460 | return EOK; |
418 | } |
461 | } |
419 | 462 | ||
420 | /** Connect client to the device. |
463 | /** Connect client to the device. |
421 | * |
464 | * |
422 | * Find device driver owning requested device and forward |
465 | * Find device driver owning requested device and forward |
423 | * the message to it. |
466 | * the message to it. |
424 | * |
467 | * |
425 | */ |
468 | */ |
426 | static void devmap_forward(ipc_callid_t callid, ipc_call_t *call) |
469 | static void devmap_forward(ipc_callid_t callid, ipc_call_t *call) |
427 | { |
470 | { |
428 | /* |
471 | /* |
429 | * Get handle from request |
472 | * Get handle from request |
430 | */ |
473 | */ |
431 | dev_handle_t handle = IPC_GET_ARG2(*call); |
474 | dev_handle_t handle = IPC_GET_ARG2(*call); |
432 | devmap_device_t *dev = devmap_device_find_handle(handle); |
475 | devmap_device_t *dev = devmap_device_find_handle(handle); |
433 | 476 | ||
434 | if ((dev == NULL) || (dev->driver == NULL) || (dev->driver->phone == 0)) { |
477 | if ((dev == NULL) || (dev->driver == NULL) || (dev->driver->phone == 0)) { |
435 | ipc_answer_0(callid, ENOENT); |
478 | ipc_answer_0(callid, ENOENT); |
436 | return; |
479 | return; |
437 | } |
480 | } |
438 | 481 | ||
439 | ipc_forward_fast(callid, dev->driver->phone, dev->handle, |
482 | ipc_forward_fast(callid, dev->driver->phone, dev->handle, |
440 | IPC_GET_ARG3(*call), 0, IPC_FF_NONE); |
483 | IPC_GET_ARG3(*call), 0, IPC_FF_NONE); |
441 | } |
484 | } |
442 | 485 | ||
443 | /** Find handle for device instance identified by name. |
486 | /** Find handle for device instance identified by name. |
444 | * |
487 | * |
445 | * In answer will be send EOK and device handle in arg1 or a error |
488 | * In answer will be send EOK and device handle in arg1 or a error |
446 | * code from errno.h. |
489 | * code from errno.h. |
447 | * |
490 | * |
448 | */ |
491 | */ |
449 | static void devmap_get_handle(ipc_callid_t iid, ipc_call_t *icall) |
492 | static void devmap_get_handle(ipc_callid_t iid, ipc_call_t *icall) |
450 | { |
493 | { |
451 | /* |
494 | /* |
452 | * Wait for incoming message with device name (but do not |
495 | * Wait for incoming message with device name (but do not |
453 | * read the name itself until the buffer is allocated). |
496 | * read the name itself until the buffer is allocated). |
454 | */ |
497 | */ |
455 | ipc_callid_t callid; |
498 | ipc_callid_t callid; |
456 | size_t size; |
499 | size_t size; |
457 | if (!ipc_data_write_receive(&callid, &size)) { |
500 | if (!ipc_data_write_receive(&callid, &size)) { |
458 | ipc_answer_0(callid, EREFUSED); |
501 | ipc_answer_0(callid, EREFUSED); |
459 | ipc_answer_0(iid, EREFUSED); |
502 | ipc_answer_0(iid, EREFUSED); |
460 | return; |
503 | return; |
461 | } |
504 | } |
462 | 505 | ||
463 | if ((size < 1) || (size > DEVMAP_NAME_MAXLEN)) { |
506 | if ((size < 1) || (size > DEVMAP_NAME_MAXLEN)) { |
464 | ipc_answer_0(callid, EINVAL); |
507 | ipc_answer_0(callid, EINVAL); |
465 | ipc_answer_0(iid, EREFUSED); |
508 | ipc_answer_0(iid, EREFUSED); |
466 | return; |
509 | return; |
467 | } |
510 | } |
468 | 511 | ||
469 | /* |
512 | /* |
470 | * Allocate buffer for device name. |
513 | * Allocate buffer for device name. |
471 | */ |
514 | */ |
472 | char *name = (char *) malloc(size + 1); |
515 | char *name = (char *) malloc(size + 1); |
473 | if (name == NULL) { |
516 | if (name == NULL) { |
474 | ipc_answer_0(callid, ENOMEM); |
517 | ipc_answer_0(callid, ENOMEM); |
475 | ipc_answer_0(iid, EREFUSED); |
518 | ipc_answer_0(iid, EREFUSED); |
476 | return; |
519 | return; |
477 | } |
520 | } |
478 | 521 | ||
479 | /* |
522 | /* |
480 | * Send confirmation to sender and get data into buffer. |
523 | * Send confirmation to sender and get data into buffer. |
481 | */ |
524 | */ |
482 | ipcarg_t retval = ipc_data_write_finalize(callid, name, size); |
525 | ipcarg_t retval = ipc_data_write_finalize(callid, name, size); |
483 | if (retval != EOK) { |
526 | if (retval != EOK) { |
484 | ipc_answer_0(iid, EREFUSED); |
527 | ipc_answer_0(iid, EREFUSED); |
485 | free(name); |
528 | free(name); |
486 | return; |
529 | return; |
487 | } |
530 | } |
488 | name[size] = '\0'; |
531 | name[size] = '\0'; |
489 | 532 | ||
490 | /* |
533 | /* |
491 | * Find device name in linked list of known devices. |
534 | * Find device name in linked list of known devices. |
492 | */ |
535 | */ |
493 | const devmap_device_t *dev = devmap_device_find_name(name); |
536 | const devmap_device_t *dev = devmap_device_find_name(name); |
494 | 537 | ||
495 | /* |
538 | /* |
496 | * Device was not found. |
539 | * Device was not found. |
497 | */ |
540 | */ |
498 | if (dev == NULL) { |
541 | if (dev == NULL) { |
499 | if (IPC_GET_ARG1(*icall) & IPC_FLAG_BLOCKING) { |
542 | if (IPC_GET_ARG1(*icall) & IPC_FLAG_BLOCKING) { |
500 | /* Blocking lookup, add to pending list */ |
543 | /* Blocking lookup, add to pending list */ |
501 | pending_req_t *pr = (pending_req_t *) malloc(sizeof(pending_req_t)); |
544 | pending_req_t *pr = (pending_req_t *) malloc(sizeof(pending_req_t)); |
502 | if (!pr) { |
545 | if (!pr) { |
503 | ipc_answer_0(iid, ENOMEM); |
546 | ipc_answer_0(iid, ENOMEM); |
504 | free(name); |
547 | free(name); |
505 | return; |
548 | return; |
506 | } |
549 | } |
507 | 550 | ||
508 | pr->name = name; |
551 | pr->name = name; |
509 | pr->callid = iid; |
552 | pr->callid = iid; |
510 | list_append(&pr->link, &pending_req); |
553 | list_append(&pr->link, &pending_req); |
511 | return; |
554 | return; |
512 | } |
555 | } |
513 | 556 | ||
514 | ipc_answer_0(iid, ENOENT); |
557 | ipc_answer_0(iid, ENOENT); |
515 | free(name); |
558 | free(name); |
516 | return; |
559 | return; |
517 | } |
560 | } |
518 | 561 | ||
519 | ipc_answer_1(iid, EOK, dev->handle); |
562 | ipc_answer_1(iid, EOK, dev->handle); |
520 | free(name); |
563 | free(name); |
521 | } |
564 | } |
522 | 565 | ||
523 | /** Find name of device identified by id and send it to caller. |
566 | /** Find name of device identified by id and send it to caller. |
524 | * |
567 | * |
525 | */ |
568 | */ |
526 | static void devmap_get_name(ipc_callid_t iid, ipc_call_t *icall) |
569 | static void devmap_get_name(ipc_callid_t iid, ipc_call_t *icall) |
527 | { |
570 | { |
528 | const devmap_device_t *device = devmap_device_find_handle(IPC_GET_ARG1(*icall)); |
571 | const devmap_device_t *device = devmap_device_find_handle(IPC_GET_ARG1(*icall)); |
529 | 572 | ||
530 | /* |
573 | /* |
531 | * Device not found. |
574 | * Device not found. |
532 | */ |
575 | */ |
533 | if (device == NULL) { |
576 | if (device == NULL) { |
534 | ipc_answer_0(iid, ENOENT); |
577 | ipc_answer_0(iid, ENOENT); |
535 | return; |
578 | return; |
536 | } |
579 | } |
537 | 580 | ||
538 | ipc_answer_0(iid, EOK); |
581 | ipc_answer_0(iid, EOK); |
539 | 582 | ||
540 | size_t name_size = str_size(device->name); |
583 | size_t name_size = str_size(device->name); |
541 | 584 | ||
542 | /* FIXME: |
585 | /* FIXME: |
543 | * We have no channel from DEVMAP to client, therefore |
586 | * We have no channel from DEVMAP to client, therefore |
544 | * sending must be initiated by client. |
587 | * sending must be initiated by client. |
545 | * |
588 | * |
546 | * int rc = ipc_data_write_send(phone, device->name, name_size); |
589 | * int rc = ipc_data_write_send(phone, device->name, name_size); |
547 | * if (rc != EOK) { |
590 | * if (rc != EOK) { |
548 | * async_wait_for(req, NULL); |
591 | * async_wait_for(req, NULL); |
549 | * return rc; |
592 | * return rc; |
550 | * } |
593 | * } |
551 | */ |
594 | */ |
552 | 595 | ||
553 | /* TODO: send name in response */ |
596 | /* TODO: send name in response */ |
554 | } |
597 | } |
555 | 598 | ||
556 | static void devmap_get_count(ipc_callid_t iid, ipc_call_t *icall) |
599 | static void devmap_get_count(ipc_callid_t iid, ipc_call_t *icall) |
557 | { |
600 | { |
- | 601 | fibril_mutex_lock(&devices_list_mutex); |
|
558 | ipc_answer_1(iid, EOK, list_count(&devices_list)); |
602 | ipc_answer_1(iid, EOK, list_count(&devices_list)); |
- | 603 | fibril_mutex_unlock(&devices_list_mutex); |
|
559 | } |
604 | } |
560 | 605 | ||
561 | static void devmap_get_devices(ipc_callid_t iid, ipc_call_t *icall) |
606 | static void devmap_get_devices(ipc_callid_t iid, ipc_call_t *icall) |
562 | { |
607 | { |
- | 608 | fibril_mutex_lock(&devices_list_mutex); |
|
- | 609 | ||
563 | ipc_callid_t callid; |
610 | ipc_callid_t callid; |
564 | size_t size; |
611 | size_t size; |
565 | if (!ipc_data_read_receive(&callid, &size)) { |
612 | if (!ipc_data_read_receive(&callid, &size)) { |
566 | ipc_answer_0(callid, EREFUSED); |
613 | ipc_answer_0(callid, EREFUSED); |
567 | ipc_answer_0(iid, EREFUSED); |
614 | ipc_answer_0(iid, EREFUSED); |
568 | return; |
615 | return; |
569 | } |
616 | } |
570 | 617 | ||
571 | if ((size % sizeof(dev_desc_t)) != 0) { |
618 | if ((size % sizeof(dev_desc_t)) != 0) { |
572 | ipc_answer_0(callid, EINVAL); |
619 | ipc_answer_0(callid, EINVAL); |
573 | ipc_answer_0(iid, EREFUSED); |
620 | ipc_answer_0(iid, EREFUSED); |
574 | return; |
621 | return; |
575 | } |
622 | } |
576 | 623 | ||
577 | size_t count = size / sizeof(dev_desc_t); |
624 | size_t count = size / sizeof(dev_desc_t); |
578 | dev_desc_t *desc = (dev_desc_t *) malloc(size); |
625 | dev_desc_t *desc = (dev_desc_t *) malloc(size); |
579 | if (desc == NULL) { |
626 | if (desc == NULL) { |
580 | ipc_answer_0(callid, ENOMEM); |
627 | ipc_answer_0(callid, ENOMEM); |
581 | ipc_answer_0(iid, EREFUSED); |
628 | ipc_answer_0(iid, EREFUSED); |
582 | return; |
629 | return; |
583 | } |
630 | } |
584 | 631 | ||
585 | size_t pos = 0; |
632 | size_t pos = 0; |
586 | link_t *item = devices_list.next; |
633 | link_t *item = devices_list.next; |
587 | 634 | ||
588 | while ((item != &devices_list) && (pos < count)) { |
635 | while ((item != &devices_list) && (pos < count)) { |
589 | devmap_device_t *device = list_get_instance(item, devmap_device_t, devices); |
636 | devmap_device_t *device = list_get_instance(item, devmap_device_t, devices); |
590 | 637 | ||
591 | desc[pos].handle = device->handle; |
638 | desc[pos].handle = device->handle; |
592 | str_cpy(desc[pos].name, DEVMAP_NAME_MAXLEN, device->name); |
639 | str_cpy(desc[pos].name, DEVMAP_NAME_MAXLEN, device->name); |
593 | pos++; |
640 | pos++; |
594 | item = item->next; |
641 | item = item->next; |
595 | } |
642 | } |
596 | 643 | ||
597 | ipcarg_t retval = ipc_data_read_finalize(callid, desc, pos * sizeof(dev_desc_t)); |
644 | ipcarg_t retval = ipc_data_read_finalize(callid, desc, pos * sizeof(dev_desc_t)); |
598 | if (retval != EOK) { |
645 | if (retval != EOK) { |
599 | ipc_answer_0(iid, EREFUSED); |
646 | ipc_answer_0(iid, EREFUSED); |
600 | free(desc); |
647 | free(desc); |
601 | return; |
648 | return; |
602 | } |
649 | } |
603 | 650 | ||
604 | free(desc); |
651 | free(desc); |
605 | 652 | ||
- | 653 | fibril_mutex_unlock(&devices_list_mutex); |
|
- | 654 | ||
606 | ipc_answer_1(iid, EOK, pos); |
655 | ipc_answer_1(iid, EOK, pos); |
607 | } |
656 | } |
608 | 657 | ||
609 | /** Initialize device mapper. |
658 | /** Initialize device mapper. |
610 | * |
659 | * |
611 | * |
660 | * |
612 | */ |
661 | */ |
613 | static bool devmap_init() |
662 | static bool devmap_init() |
614 | { |
663 | { |
615 | /* Create NULL device entry */ |
664 | /* Create NULL device entry */ |
616 | devmap_device_t *device = (devmap_device_t *) malloc(sizeof(devmap_device_t)); |
665 | devmap_device_t *device = (devmap_device_t *) malloc(sizeof(devmap_device_t)); |
617 | if (device == NULL) |
666 | if (device == NULL) |
618 | return false; |
667 | return false; |
619 | 668 | ||
620 | device->name = str_dup("null"); |
669 | device->name = str_dup("null"); |
621 | if (device->name == NULL) { |
670 | if (device->name == NULL) { |
622 | free(device); |
671 | free(device); |
623 | return false; |
672 | return false; |
624 | } |
673 | } |
625 | 674 | ||
626 | list_initialize(&(device->devices)); |
675 | list_initialize(&(device->devices)); |
627 | list_initialize(&(device->driver_devices)); |
676 | list_initialize(&(device->driver_devices)); |
628 | 677 | ||
- | 678 | fibril_mutex_lock(&devices_list_mutex); |
|
- | 679 | ||
629 | /* Get unique device handle */ |
680 | /* Get unique device handle */ |
630 | device->handle = devmap_create_handle(); |
681 | device->handle = devmap_create_handle(); |
631 | device->driver = NULL; |
682 | device->driver = NULL; |
632 | 683 | ||
633 | /* Insert device into list of all devices */ |
684 | /* Insert device into list of all devices */ |
634 | list_append(&device->devices, &devices_list); |
685 | list_append(&device->devices, &devices_list); |
635 | 686 | ||
- | 687 | fibril_mutex_unlock(&devices_list_mutex); |
|
- | 688 | ||
636 | return true; |
689 | return true; |
637 | } |
690 | } |
638 | 691 | ||
639 | /** Handle connection with device driver. |
692 | /** Handle connection with device driver. |
640 | * |
693 | * |
641 | */ |
694 | */ |
642 | static void devmap_connection_driver(ipc_callid_t iid, ipc_call_t *icall) |
695 | static void devmap_connection_driver(ipc_callid_t iid, ipc_call_t *icall) |
643 | { |
696 | { |
644 | /* Accept connection */ |
697 | /* Accept connection */ |
645 | ipc_answer_0(iid, EOK); |
698 | ipc_answer_0(iid, EOK); |
646 | 699 | ||
647 | devmap_driver_t *driver = NULL; |
700 | devmap_driver_t *driver = NULL; |
648 | devmap_driver_register(&driver); |
701 | devmap_driver_register(&driver); |
649 | 702 | ||
650 | if (NULL == driver) |
703 | if (NULL == driver) |
651 | return; |
704 | return; |
652 | 705 | ||
653 | bool cont = true; |
706 | bool cont = true; |
654 | while (cont) { |
707 | while (cont) { |
655 | ipc_call_t call; |
708 | ipc_call_t call; |
656 | ipc_callid_t callid = async_get_call(&call); |
709 | ipc_callid_t callid = async_get_call(&call); |
657 | 710 | ||
658 | async_serialize_start(); |
- | |
659 | - | ||
660 | switch (IPC_GET_METHOD(call)) { |
711 | switch (IPC_GET_METHOD(call)) { |
661 | case IPC_M_PHONE_HUNGUP: |
712 | case IPC_M_PHONE_HUNGUP: |
662 | cont = false; |
713 | cont = false; |
663 | async_serialize_end(); |
- | |
664 | continue; |
714 | continue; |
665 | case DEVMAP_DRIVER_UNREGISTER: |
715 | case DEVMAP_DRIVER_UNREGISTER: |
666 | if (NULL == driver) |
716 | if (NULL == driver) |
667 | ipc_answer_0(callid, ENOENT); |
717 | ipc_answer_0(callid, ENOENT); |
668 | else |
718 | else |
669 | ipc_answer_0(callid, EOK); |
719 | ipc_answer_0(callid, EOK); |
670 | break; |
720 | break; |
671 | case DEVMAP_DEVICE_REGISTER: |
721 | case DEVMAP_DEVICE_REGISTER: |
672 | /* Register one instance of device */ |
722 | /* Register one instance of device */ |
673 | devmap_device_register(callid, &call, driver); |
723 | devmap_device_register(callid, &call, driver); |
674 | break; |
724 | break; |
675 | case DEVMAP_DEVICE_UNREGISTER: |
725 | case DEVMAP_DEVICE_UNREGISTER: |
676 | /* Remove instance of device identified by handler */ |
726 | /* Remove instance of device identified by handler */ |
677 | devmap_device_unregister(callid, &call, driver); |
727 | devmap_device_unregister(callid, &call, driver); |
678 | break; |
728 | break; |
679 | case DEVMAP_DEVICE_GET_HANDLE: |
729 | case DEVMAP_DEVICE_GET_HANDLE: |
680 | devmap_get_handle(callid, &call); |
730 | devmap_get_handle(callid, &call); |
681 | break; |
731 | break; |
682 | case DEVMAP_DEVICE_GET_NAME: |
732 | case DEVMAP_DEVICE_GET_NAME: |
683 | devmap_get_name(callid, &call); |
733 | devmap_get_name(callid, &call); |
684 | break; |
734 | break; |
685 | default: |
735 | default: |
686 | if (!(callid & IPC_CALLID_NOTIFICATION)) |
736 | if (!(callid & IPC_CALLID_NOTIFICATION)) |
687 | ipc_answer_0(callid, ENOENT); |
737 | ipc_answer_0(callid, ENOENT); |
688 | } |
738 | } |
689 | - | ||
690 | async_serialize_end(); |
- | |
691 | } |
739 | } |
692 | 740 | ||
693 | if (NULL != driver) { |
741 | if (NULL != driver) { |
694 | /* |
742 | /* |
695 | * Unregister the device driver and all its devices. |
743 | * Unregister the device driver and all its devices. |
696 | */ |
744 | */ |
697 | - | ||
698 | async_serialize_start(); |
- | |
699 | - | ||
700 | devmap_driver_unregister(driver); |
745 | devmap_driver_unregister(driver); |
701 | driver = NULL; |
746 | driver = NULL; |
702 | - | ||
703 | async_serialize_end(); |
- | |
704 | } |
747 | } |
705 | } |
748 | } |
706 | 749 | ||
707 | /** Handle connection with device client. |
750 | /** Handle connection with device client. |
708 | * |
751 | * |
709 | */ |
752 | */ |
710 | static void devmap_connection_client(ipc_callid_t iid, ipc_call_t *icall) |
753 | static void devmap_connection_client(ipc_callid_t iid, ipc_call_t *icall) |
711 | { |
754 | { |
712 | /* Accept connection */ |
755 | /* Accept connection */ |
713 | ipc_answer_0(iid, EOK); |
756 | ipc_answer_0(iid, EOK); |
714 | 757 | ||
715 | bool cont = true; |
758 | bool cont = true; |
716 | while (cont) { |
759 | while (cont) { |
717 | ipc_call_t call; |
760 | ipc_call_t call; |
718 | ipc_callid_t callid = async_get_call(&call); |
761 | ipc_callid_t callid = async_get_call(&call); |
719 | 762 | ||
720 | async_serialize_start(); |
- | |
721 | - | ||
722 | switch (IPC_GET_METHOD(call)) { |
763 | switch (IPC_GET_METHOD(call)) { |
723 | case IPC_M_PHONE_HUNGUP: |
764 | case IPC_M_PHONE_HUNGUP: |
724 | cont = false; |
765 | cont = false; |
725 | async_serialize_end(); |
- | |
726 | continue; |
766 | continue; |
727 | case DEVMAP_DEVICE_GET_HANDLE: |
767 | case DEVMAP_DEVICE_GET_HANDLE: |
728 | devmap_get_handle(callid, &call); |
768 | devmap_get_handle(callid, &call); |
729 | break; |
769 | break; |
730 | case DEVMAP_DEVICE_GET_NAME: |
770 | case DEVMAP_DEVICE_GET_NAME: |
731 | devmap_get_name(callid, &call); |
771 | devmap_get_name(callid, &call); |
732 | break; |
772 | break; |
733 | case DEVMAP_DEVICE_GET_COUNT: |
773 | case DEVMAP_DEVICE_GET_COUNT: |
734 | devmap_get_count(callid, &call); |
774 | devmap_get_count(callid, &call); |
735 | break; |
775 | break; |
736 | case DEVMAP_DEVICE_GET_DEVICES: |
776 | case DEVMAP_DEVICE_GET_DEVICES: |
737 | devmap_get_devices(callid, &call); |
777 | devmap_get_devices(callid, &call); |
738 | break; |
778 | break; |
739 | default: |
779 | default: |
740 | if (!(callid & IPC_CALLID_NOTIFICATION)) |
780 | if (!(callid & IPC_CALLID_NOTIFICATION)) |
741 | ipc_answer_0(callid, ENOENT); |
781 | ipc_answer_0(callid, ENOENT); |
742 | } |
782 | } |
743 | - | ||
744 | async_serialize_end(); |
- | |
745 | } |
783 | } |
746 | } |
784 | } |
747 | 785 | ||
748 | /** Function for handling connections to devmap |
786 | /** Function for handling connections to devmap |
749 | * |
787 | * |
750 | */ |
788 | */ |
751 | static void devmap_connection(ipc_callid_t iid, ipc_call_t *icall) |
789 | static void devmap_connection(ipc_callid_t iid, ipc_call_t *icall) |
752 | { |
790 | { |
753 | /* Select interface */ |
791 | /* Select interface */ |
754 | switch ((ipcarg_t) (IPC_GET_ARG1(*icall))) { |
792 | switch ((ipcarg_t) (IPC_GET_ARG1(*icall))) { |
755 | case DEVMAP_DRIVER: |
793 | case DEVMAP_DRIVER: |
756 | devmap_connection_driver(iid, icall); |
794 | devmap_connection_driver(iid, icall); |
757 | break; |
795 | break; |
758 | case DEVMAP_CLIENT: |
796 | case DEVMAP_CLIENT: |
759 | devmap_connection_client(iid, icall); |
797 | devmap_connection_client(iid, icall); |
760 | break; |
798 | break; |
761 | case DEVMAP_CONNECT_TO_DEVICE: |
799 | case DEVMAP_CONNECT_TO_DEVICE: |
762 | /* Connect client to selected device */ |
800 | /* Connect client to selected device */ |
763 | devmap_forward(iid, icall); |
801 | devmap_forward(iid, icall); |
764 | break; |
802 | break; |
765 | default: |
803 | default: |
766 | /* No such interface */ |
804 | /* No such interface */ |
767 | ipc_answer_0(iid, ENOENT); |
805 | ipc_answer_0(iid, ENOENT); |
768 | } |
806 | } |
769 | } |
807 | } |
770 | 808 | ||
771 | /** |
809 | /** |
772 | * |
810 | * |
773 | */ |
811 | */ |
774 | int main(int argc, char *argv[]) |
812 | int main(int argc, char *argv[]) |
775 | { |
813 | { |
776 | printf(NAME ": HelenOS Device Mapper\n"); |
814 | printf(NAME ": HelenOS Device Mapper\n"); |
777 | 815 | ||
778 | if (!devmap_init()) { |
816 | if (!devmap_init()) { |
779 | printf(NAME ": Error while initializing service\n"); |
817 | printf(NAME ": Error while initializing service\n"); |
780 | return -1; |
818 | return -1; |
781 | } |
819 | } |
782 | 820 | ||
783 | /* Set a handler of incomming connections and |
821 | /* Set a handler of incomming connections and |
784 | pending operations */ |
822 | pending operations */ |
785 | async_set_pending(process_pending_lookup); |
823 | async_set_pending(process_pending_lookup); |
786 | async_set_client_connection(devmap_connection); |
824 | async_set_client_connection(devmap_connection); |
787 | 825 | ||
788 | /* Register device mapper at naming service */ |
826 | /* Register device mapper at naming service */ |
789 | ipcarg_t phonead; |
827 | ipcarg_t phonead; |
790 | if (ipc_connect_to_me(PHONE_NS, SERVICE_DEVMAP, 0, 0, &phonead) != 0) |
828 | if (ipc_connect_to_me(PHONE_NS, SERVICE_DEVMAP, 0, 0, &phonead) != 0) |
791 | return -1; |
829 | return -1; |
792 | 830 | ||
793 | printf(NAME ": Accepting connections\n"); |
831 | printf(NAME ": Accepting connections\n"); |
794 | async_manager(); |
832 | async_manager(); |
795 | 833 | ||
796 | /* Never reached */ |
834 | /* Never reached */ |
797 | return 0; |
835 | return 0; |
798 | } |
836 | } |
799 | 837 | ||
800 | /** |
838 | /** |
801 | * @} |
839 | * @} |
802 | */ |
840 | */ |
803 | 841 |