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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 <futex.h> |
- | |
45 | #include <stdlib.h> |
44 | #include <stdlib.h> |
46 | #include <string.h> |
45 | #include <string.h> |
47 | #include <ipc/devmap.h> |
46 | #include <ipc/devmap.h> |
48 | 47 | ||
49 | #define NAME "devmap" |
48 | #define NAME "devmap" |
50 | 49 | ||
51 | /** Representation of device driver. |
50 | /** Representation of device driver. |
52 | * |
51 | * |
53 | * Each driver is responsible for a set of devices. |
52 | * Each driver is responsible for a set of devices. |
54 | * |
53 | * |
55 | */ |
54 | */ |
56 | typedef struct { |
55 | typedef struct { |
57 | /** Pointers to previous and next drivers in linked list */ |
56 | /** Pointers to previous and next drivers in linked list */ |
58 | link_t drivers; |
57 | link_t drivers; |
59 | /** Pointer to the linked list of devices controlled by this driver */ |
58 | /** Pointer to the linked list of devices controlled by this driver */ |
60 | link_t devices; |
59 | link_t devices; |
61 | /** Phone asociated with this driver */ |
60 | /** Phone asociated with this driver */ |
62 | ipcarg_t phone; |
61 | ipcarg_t phone; |
63 | /** Device driver name */ |
62 | /** Device driver name */ |
64 | char *name; |
63 | char *name; |
65 | /** Futex for list of devices owned by this driver */ |
- | |
66 | atomic_t devices_futex; |
- | |
67 | } devmap_driver_t; |
64 | } devmap_driver_t; |
68 | 65 | ||
69 | /** Info about registered device |
66 | /** Info about registered device |
70 | * |
67 | * |
71 | */ |
68 | */ |
72 | typedef struct { |
69 | typedef struct { |
73 | /** Pointer to the previous and next device in the list of all devices */ |
70 | /** Pointer to the previous and next device in the list of all devices */ |
74 | link_t devices; |
71 | link_t devices; |
75 | /** Pointer to the previous and next device in the list of devices |
72 | /** Pointer to the previous and next device in the list of devices |
76 | owned by one driver */ |
73 | owned by one driver */ |
77 | link_t driver_devices; |
74 | link_t driver_devices; |
78 | /** Unique device identifier */ |
75 | /** Unique device identifier */ |
79 | dev_handle_t handle; |
76 | dev_handle_t handle; |
80 | /** Device name */ |
77 | /** Device name */ |
81 | char *name; |
78 | char *name; |
82 | /** Device driver handling this device */ |
79 | /** Device driver handling this device */ |
83 | devmap_driver_t *driver; |
80 | devmap_driver_t *driver; |
84 | } devmap_device_t; |
81 | } devmap_device_t; |
85 | 82 | ||
86 | /** Pending lookup structure. */ |
83 | /** Pending lookup structure. */ |
87 | typedef struct { |
84 | typedef struct { |
88 | link_t link; |
85 | link_t link; |
89 | char *name; /**< Device name */ |
86 | char *name; /**< Device name */ |
90 | ipc_callid_t callid; /**< Call ID waiting for the lookup */ |
87 | ipc_callid_t callid; /**< Call ID waiting for the lookup */ |
91 | } pending_req_t; |
88 | } pending_req_t; |
92 | 89 | ||
93 | LIST_INITIALIZE(devices_list); |
90 | LIST_INITIALIZE(devices_list); |
94 | LIST_INITIALIZE(drivers_list); |
91 | LIST_INITIALIZE(drivers_list); |
95 | LIST_INITIALIZE(pending_req); |
92 | LIST_INITIALIZE(pending_req); |
96 | 93 | ||
97 | /* Locking order: |
- | |
98 | * drivers_list_futex |
- | |
99 | * devices_list_futex |
- | |
100 | * (devmap_driver_t *)->devices_futex |
- | |
101 | * create_handle_futex |
- | |
102 | **/ |
- | |
103 | - | ||
104 | static atomic_t devices_list_futex = FUTEX_INITIALIZER; |
- | |
105 | static atomic_t drivers_list_futex = FUTEX_INITIALIZER; |
- | |
106 | static atomic_t create_handle_futex = FUTEX_INITIALIZER; |
- | |
107 | - | ||
108 | static dev_handle_t last_handle = 0; |
94 | static dev_handle_t last_handle = 0; |
109 | 95 | ||
110 | static dev_handle_t devmap_create_handle(void) |
96 | static dev_handle_t devmap_create_handle(void) |
111 | { |
97 | { |
112 | /* TODO: allow reusing old handles after their unregistration |
98 | /* TODO: allow reusing old handles after their unregistration |
113 | * and implement some version of LRU algorithm |
99 | * and implement some version of LRU algorithm, avoid overflow |
114 | */ |
100 | */ |
115 | 101 | ||
116 | /* FIXME: overflow */ |
- | |
117 | futex_down(&create_handle_futex); |
- | |
118 | last_handle++; |
102 | last_handle++; |
119 | futex_up(&create_handle_futex); |
- | |
120 | 103 | ||
121 | return last_handle; |
104 | return last_handle; |
122 | } |
105 | } |
123 | 106 | ||
124 | /** Find device with given name. |
107 | /** Find device with given name. |
125 | * |
108 | * |
126 | */ |
109 | */ |
127 | static devmap_device_t *devmap_device_find_name(const char *name) |
110 | static devmap_device_t *devmap_device_find_name(const char *name) |
128 | { |
111 | { |
129 | link_t *item = devices_list.next; |
112 | link_t *item = devices_list.next; |
130 | devmap_device_t *device = NULL; |
113 | devmap_device_t *device = NULL; |
131 | 114 | ||
132 | while (item != &devices_list) { |
115 | while (item != &devices_list) { |
133 | device = list_get_instance(item, devmap_device_t, devices); |
116 | device = list_get_instance(item, devmap_device_t, devices); |
134 | if (0 == str_cmp(device->name, name)) |
117 | if (str_cmp(device->name, name) == 0) |
135 | break; |
118 | break; |
136 | item = item->next; |
119 | item = item->next; |
137 | } |
120 | } |
138 | 121 | ||
139 | if (item == &devices_list) |
122 | if (item == &devices_list) |
140 | return NULL; |
123 | return NULL; |
141 | 124 | ||
142 | device = list_get_instance(item, devmap_device_t, devices); |
125 | device = list_get_instance(item, devmap_device_t, devices); |
143 | return device; |
126 | return device; |
144 | } |
127 | } |
145 | 128 | ||
146 | /** Find device with given handle. |
129 | /** Find device with given handle. |
147 | * |
130 | * |
148 | * @todo: use hash table |
131 | * @todo: use hash table |
149 | * |
132 | * |
150 | */ |
133 | */ |
151 | static devmap_device_t *devmap_device_find_handle(dev_handle_t handle) |
134 | static devmap_device_t *devmap_device_find_handle(dev_handle_t handle) |
152 | { |
135 | { |
153 | futex_down(&devices_list_futex); |
- | |
154 | - | ||
155 | link_t *item = (&devices_list)->next; |
136 | link_t *item = (&devices_list)->next; |
156 | devmap_device_t *device = NULL; |
137 | devmap_device_t *device = NULL; |
157 | 138 | ||
158 | while (item != &devices_list) { |
139 | while (item != &devices_list) { |
159 | device = list_get_instance(item, devmap_device_t, devices); |
140 | device = list_get_instance(item, devmap_device_t, devices); |
160 | if (device->handle == handle) |
141 | if (device->handle == handle) |
161 | break; |
142 | break; |
162 | item = item->next; |
143 | item = item->next; |
163 | } |
144 | } |
164 | 145 | ||
165 | if (item == &devices_list) { |
146 | if (item == &devices_list) |
166 | futex_up(&devices_list_futex); |
- | |
167 | return NULL; |
147 | return NULL; |
168 | } |
- | |
169 | 148 | ||
170 | device = list_get_instance(item, devmap_device_t, devices); |
149 | device = list_get_instance(item, devmap_device_t, devices); |
171 | 150 | ||
172 | futex_up(&devices_list_futex); |
- | |
173 | - | ||
174 | return device; |
151 | return device; |
175 | } |
152 | } |
176 | 153 | ||
177 | /** |
154 | /** |
178 | * |
155 | * |
179 | * Unregister device and free it. It's assumed that driver's device list is |
156 | * Unregister device and free it. It's assumed that driver's device list is |
180 | * already locked. |
157 | * already locked. |
181 | * |
158 | * |
182 | */ |
159 | */ |
183 | static int devmap_device_unregister_core(devmap_device_t *device) |
160 | static int devmap_device_unregister_core(devmap_device_t *device) |
184 | { |
161 | { |
185 | list_remove(&(device->devices)); |
162 | list_remove(&(device->devices)); |
186 | list_remove(&(device->driver_devices)); |
163 | list_remove(&(device->driver_devices)); |
187 | 164 | ||
188 | free(device->name); |
165 | free(device->name); |
189 | free(device); |
166 | free(device); |
190 | 167 | ||
191 | return EOK; |
168 | return EOK; |
192 | } |
169 | } |
193 | 170 | ||
194 | /** |
171 | /** |
195 | * |
172 | * |
196 | * Read info about new driver and add it into linked list of registered |
173 | * Read info about new driver and add it into linked list of registered |
197 | * drivers. |
174 | * drivers. |
198 | * |
175 | * |
199 | */ |
176 | */ |
200 | static void devmap_driver_register(devmap_driver_t **odriver) |
177 | static void devmap_driver_register(devmap_driver_t **odriver) |
201 | { |
178 | { |
202 | *odriver = NULL; |
179 | *odriver = NULL; |
203 | 180 | ||
204 | ipc_call_t icall; |
181 | ipc_call_t icall; |
205 | ipc_callid_t iid = async_get_call(&icall); |
182 | ipc_callid_t iid = async_get_call(&icall); |
206 | 183 | ||
207 | if (IPC_GET_METHOD(icall) != DEVMAP_DRIVER_REGISTER) { |
184 | if (IPC_GET_METHOD(icall) != DEVMAP_DRIVER_REGISTER) { |
208 | ipc_answer_0(iid, EREFUSED); |
185 | ipc_answer_0(iid, EREFUSED); |
209 | return; |
186 | return; |
210 | } |
187 | } |
211 | 188 | ||
212 | devmap_driver_t *driver = (devmap_driver_t *) malloc(sizeof(devmap_driver_t)); |
189 | devmap_driver_t *driver = (devmap_driver_t *) malloc(sizeof(devmap_driver_t)); |
213 | 190 | ||
214 | if (driver == NULL) { |
191 | if (driver == NULL) { |
215 | ipc_answer_0(iid, ENOMEM); |
192 | ipc_answer_0(iid, ENOMEM); |
216 | return; |
193 | return; |
217 | } |
194 | } |
218 | 195 | ||
219 | /* |
196 | /* |
220 | * Get driver name |
197 | * Get driver name |
221 | */ |
198 | */ |
222 | ipc_callid_t callid; |
199 | ipc_callid_t callid; |
223 | size_t name_size; |
200 | size_t name_size; |
224 | if (!ipc_data_write_receive(&callid, &name_size)) { |
201 | if (!ipc_data_write_receive(&callid, &name_size)) { |
225 | free(driver); |
202 | free(driver); |
226 | ipc_answer_0(callid, EREFUSED); |
203 | ipc_answer_0(callid, EREFUSED); |
227 | ipc_answer_0(iid, EREFUSED); |
204 | ipc_answer_0(iid, EREFUSED); |
228 | return; |
205 | return; |
229 | } |
206 | } |
230 | 207 | ||
231 | if (name_size > DEVMAP_NAME_MAXLEN) { |
208 | if (name_size > DEVMAP_NAME_MAXLEN) { |
232 | free(driver); |
209 | free(driver); |
233 | ipc_answer_0(callid, EINVAL); |
210 | ipc_answer_0(callid, EINVAL); |
234 | ipc_answer_0(iid, EREFUSED); |
211 | ipc_answer_0(iid, EREFUSED); |
235 | return; |
212 | return; |
236 | } |
213 | } |
237 | 214 | ||
238 | /* |
215 | /* |
239 | * Allocate buffer for device name. |
216 | * Allocate buffer for device name. |
240 | */ |
217 | */ |
241 | driver->name = (char *) malloc(name_size + 1); |
218 | driver->name = (char *) malloc(name_size + 1); |
242 | if (driver->name == NULL) { |
219 | if (driver->name == NULL) { |
243 | free(driver); |
220 | free(driver); |
244 | ipc_answer_0(callid, ENOMEM); |
221 | ipc_answer_0(callid, ENOMEM); |
245 | ipc_answer_0(iid, EREFUSED); |
222 | ipc_answer_0(iid, EREFUSED); |
246 | return; |
223 | return; |
247 | } |
224 | } |
248 | 225 | ||
249 | /* |
226 | /* |
250 | * Send confirmation to sender and get data into buffer. |
227 | * Send confirmation to sender and get data into buffer. |
251 | */ |
228 | */ |
252 | if (EOK != ipc_data_write_finalize(callid, driver->name, name_size)) { |
229 | if (ipc_data_write_finalize(callid, driver->name, name_size) != EOK) { |
253 | free(driver->name); |
230 | free(driver->name); |
254 | free(driver); |
231 | free(driver); |
255 | ipc_answer_0(iid, EREFUSED); |
232 | ipc_answer_0(iid, EREFUSED); |
256 | return; |
233 | return; |
257 | } |
234 | } |
258 | 235 | ||
259 | driver->name[name_size] = 0; |
236 | driver->name[name_size] = 0; |
260 | 237 | ||
261 | /* Initialize futex for list of devices owned by this driver */ |
- | |
262 | futex_initialize(&(driver->devices_futex), 1); |
- | |
263 | - | ||
264 | /* |
238 | /* |
265 | * Initialize list of asociated devices |
239 | * Initialize list of asociated devices |
266 | */ |
240 | */ |
267 | list_initialize(&(driver->devices)); |
241 | list_initialize(&(driver->devices)); |
268 | 242 | ||
269 | /* |
243 | /* |
270 | * Create connection to the driver |
244 | * Create connection to the driver |
271 | */ |
245 | */ |
272 | ipc_call_t call; |
246 | ipc_call_t call; |
273 | callid = async_get_call(&call); |
247 | callid = async_get_call(&call); |
274 | 248 | ||
275 | if (IPC_M_CONNECT_TO_ME != IPC_GET_METHOD(call)) { |
249 | if (IPC_GET_METHOD(call) != IPC_M_CONNECT_TO_ME) { |
276 | ipc_answer_0(callid, ENOTSUP); |
250 | ipc_answer_0(callid, ENOTSUP); |
277 | 251 | ||
278 | free(driver->name); |
252 | free(driver->name); |
279 | free(driver); |
253 | free(driver); |
280 | ipc_answer_0(iid, ENOTSUP); |
254 | ipc_answer_0(iid, ENOTSUP); |
281 | return; |
255 | return; |
282 | } |
256 | } |
283 | 257 | ||
284 | driver->phone = IPC_GET_ARG5(call); |
258 | driver->phone = IPC_GET_ARG5(call); |
285 | 259 | ||
286 | ipc_answer_0(callid, EOK); |
260 | ipc_answer_0(callid, EOK); |
287 | 261 | ||
288 | list_initialize(&(driver->drivers)); |
262 | list_initialize(&(driver->drivers)); |
289 | 263 | ||
290 | futex_down(&drivers_list_futex); |
- | |
291 | - | ||
292 | /* TODO: |
264 | /* TODO: |
293 | * check that no driver with name equal to driver->name is registered |
265 | * check that no driver with name equal to driver->name is registered |
294 | */ |
266 | */ |
295 | 267 | ||
296 | /* |
268 | /* |
297 | * Insert new driver into list of registered drivers |
269 | * Insert new driver into list of registered drivers |
298 | */ |
270 | */ |
299 | list_append(&(driver->drivers), &drivers_list); |
271 | list_append(&(driver->drivers), &drivers_list); |
300 | futex_up(&drivers_list_futex); |
- | |
301 | 272 | ||
302 | ipc_answer_0(iid, EOK); |
273 | ipc_answer_0(iid, EOK); |
303 | 274 | ||
304 | *odriver = driver; |
275 | *odriver = driver; |
305 | } |
276 | } |
306 | 277 | ||
307 | /** |
278 | /** |
308 | * Unregister device driver, unregister all its devices and free driver |
279 | * Unregister device driver, unregister all its devices and free driver |
309 | * structure. |
280 | * structure. |
310 | * |
281 | * |
311 | */ |
282 | */ |
312 | static int devmap_driver_unregister(devmap_driver_t *driver) |
283 | static int devmap_driver_unregister(devmap_driver_t *driver) |
313 | { |
284 | { |
314 | if (driver == NULL) |
285 | if (driver == NULL) |
315 | return EEXISTS; |
286 | return EEXISTS; |
316 | 287 | ||
317 | futex_down(&drivers_list_futex); |
- | |
318 | - | ||
319 | if (driver->phone != 0) |
288 | if (driver->phone != 0) |
320 | ipc_hangup(driver->phone); |
289 | ipc_hangup(driver->phone); |
321 | 290 | ||
322 | /* Remove it from list of drivers */ |
291 | /* Remove it from list of drivers */ |
323 | list_remove(&(driver->drivers)); |
292 | list_remove(&(driver->drivers)); |
324 | 293 | ||
325 | /* Unregister all its devices */ |
- | |
326 | futex_down(&devices_list_futex); |
- | |
327 | futex_down(&(driver->devices_futex)); |
- | |
328 | - | ||
329 | while (!list_empty(&(driver->devices))) { |
294 | while (!list_empty(&(driver->devices))) { |
330 | devmap_device_t *device = list_get_instance(driver->devices.next, |
295 | devmap_device_t *device = list_get_instance(driver->devices.next, |
331 | devmap_device_t, driver_devices); |
296 | devmap_device_t, driver_devices); |
332 | devmap_device_unregister_core(device); |
297 | devmap_device_unregister_core(device); |
333 | } |
298 | } |
334 | 299 | ||
335 | futex_up(&(driver->devices_futex)); |
- | |
336 | futex_up(&devices_list_futex); |
- | |
337 | futex_up(&drivers_list_futex); |
- | |
338 | - | ||
339 | /* free name and driver */ |
300 | /* free name and driver */ |
340 | if (driver->name != NULL) |
301 | if (driver->name != NULL) |
341 | free(driver->name); |
302 | free(driver->name); |
342 | 303 | ||
343 | free(driver); |
304 | free(driver); |
344 | 305 | ||
345 | return EOK; |
306 | return EOK; |
346 | } |
307 | } |
347 | 308 | ||
348 | 309 | ||
349 | /** Process pending lookup requests */ |
310 | /** Process pending lookup requests */ |
350 | static void process_pending_lookup() |
311 | static void process_pending_lookup(void) |
351 | { |
312 | { |
- | 313 | async_serialize_start(); |
|
- | 314 | ||
352 | link_t *cur; |
315 | link_t *cur; |
353 | 316 | ||
354 | loop: |
317 | loop: |
355 | for (cur = pending_req.next; cur != &pending_req; cur = cur->next) { |
318 | for (cur = pending_req.next; cur != &pending_req; cur = cur->next) { |
356 | pending_req_t *pr = list_get_instance(cur, pending_req_t, link); |
319 | pending_req_t *pr = list_get_instance(cur, pending_req_t, link); |
357 | 320 | ||
358 | const devmap_device_t *dev = devmap_device_find_name(pr->name); |
321 | const devmap_device_t *dev = devmap_device_find_name(pr->name); |
359 | if (!dev) |
322 | if (!dev) |
360 | continue; |
323 | continue; |
361 | 324 | ||
362 | ipc_answer_1(pr->callid, EOK, dev->handle); |
325 | ipc_answer_1(pr->callid, EOK, dev->handle); |
363 | 326 | ||
364 | free(pr->name); |
327 | free(pr->name); |
365 | list_remove(cur); |
328 | list_remove(cur); |
366 | free(pr); |
329 | free(pr); |
- | 330 | ||
367 | goto loop; |
331 | goto loop; |
368 | } |
332 | } |
- | 333 | ||
- | 334 | async_serialize_end(); |
|
369 | } |
335 | } |
370 | 336 | ||
371 | 337 | ||
372 | /** Register instance of device |
338 | /** Register instance of device |
373 | * |
339 | * |
374 | */ |
340 | */ |
375 | static void devmap_device_register(ipc_callid_t iid, ipc_call_t *icall, |
341 | static void devmap_device_register(ipc_callid_t iid, ipc_call_t *icall, |
376 | devmap_driver_t *driver) |
342 | devmap_driver_t *driver) |
377 | { |
343 | { |
378 | if (driver == NULL) { |
344 | if (driver == NULL) { |
379 | ipc_answer_0(iid, EREFUSED); |
345 | ipc_answer_0(iid, EREFUSED); |
380 | return; |
346 | return; |
381 | } |
347 | } |
382 | 348 | ||
383 | /* Create new device entry */ |
349 | /* Create new device entry */ |
384 | devmap_device_t *device = (devmap_device_t *) malloc(sizeof(devmap_device_t)); |
350 | devmap_device_t *device = (devmap_device_t *) malloc(sizeof(devmap_device_t)); |
385 | if (device == NULL) { |
351 | if (device == NULL) { |
386 | ipc_answer_0(iid, ENOMEM); |
352 | ipc_answer_0(iid, ENOMEM); |
387 | return; |
353 | return; |
388 | } |
354 | } |
389 | 355 | ||
390 | /* Get device name */ |
356 | /* Get device name */ |
391 | ipc_callid_t callid; |
357 | ipc_callid_t callid; |
392 | size_t size; |
358 | size_t size; |
393 | if (!ipc_data_write_receive(&callid, &size)) { |
359 | if (!ipc_data_write_receive(&callid, &size)) { |
394 | free(device); |
360 | free(device); |
395 | ipc_answer_0(iid, EREFUSED); |
361 | ipc_answer_0(iid, EREFUSED); |
396 | return; |
362 | return; |
397 | } |
363 | } |
398 | 364 | ||
399 | if (size > DEVMAP_NAME_MAXLEN) { |
365 | if (size > DEVMAP_NAME_MAXLEN) { |
400 | free(device); |
366 | free(device); |
401 | ipc_answer_0(callid, EINVAL); |
367 | ipc_answer_0(callid, EINVAL); |
402 | ipc_answer_0(iid, EREFUSED); |
368 | ipc_answer_0(iid, EREFUSED); |
403 | return; |
369 | return; |
404 | } |
370 | } |
405 | 371 | ||
406 | /* +1 for terminating \0 */ |
372 | /* +1 for terminating \0 */ |
407 | device->name = (char *) malloc(size + 1); |
373 | device->name = (char *) malloc(size + 1); |
408 | 374 | ||
409 | if (device->name == NULL) { |
375 | if (device->name == NULL) { |
410 | free(device); |
376 | free(device); |
411 | ipc_answer_0(callid, ENOMEM); |
377 | ipc_answer_0(callid, ENOMEM); |
412 | ipc_answer_0(iid, EREFUSED); |
378 | ipc_answer_0(iid, EREFUSED); |
413 | return; |
379 | return; |
414 | } |
380 | } |
415 | 381 | ||
416 | ipc_data_write_finalize(callid, device->name, size); |
382 | ipc_data_write_finalize(callid, device->name, size); |
417 | device->name[size] = 0; |
383 | device->name[size] = 0; |
418 | 384 | ||
419 | list_initialize(&(device->devices)); |
385 | list_initialize(&(device->devices)); |
420 | list_initialize(&(device->driver_devices)); |
386 | list_initialize(&(device->driver_devices)); |
421 | 387 | ||
422 | futex_down(&devices_list_futex); |
- | |
423 | - | ||
424 | /* Check that device with such name is not already registered */ |
388 | /* Check that device with such name is not already registered */ |
425 | if (NULL != devmap_device_find_name(device->name)) { |
389 | if (NULL != devmap_device_find_name(device->name)) { |
426 | printf(NAME ": Device '%s' already registered\n", device->name); |
390 | printf(NAME ": Device '%s' already registered\n", device->name); |
427 | futex_up(&devices_list_futex); |
- | |
428 | free(device->name); |
391 | free(device->name); |
429 | free(device); |
392 | free(device); |
430 | ipc_answer_0(iid, EEXISTS); |
393 | ipc_answer_0(iid, EEXISTS); |
431 | return; |
394 | return; |
432 | } |
395 | } |
433 | 396 | ||
434 | /* Get unique device handle */ |
397 | /* Get unique device handle */ |
435 | device->handle = devmap_create_handle(); |
398 | device->handle = devmap_create_handle(); |
436 | 399 | ||
437 | device->driver = driver; |
400 | device->driver = driver; |
438 | 401 | ||
439 | /* Insert device into list of all devices */ |
402 | /* Insert device into list of all devices */ |
440 | list_append(&device->devices, &devices_list); |
403 | list_append(&device->devices, &devices_list); |
441 | 404 | ||
442 | /* Insert device into list of devices that belog to one driver */ |
- | |
443 | futex_down(&device->driver->devices_futex); |
- | |
444 | - | ||
445 | list_append(&device->driver_devices, &device->driver->devices); |
405 | list_append(&device->driver_devices, &device->driver->devices); |
446 | 406 | ||
447 | futex_up(&device->driver->devices_futex); |
- | |
448 | futex_up(&devices_list_futex); |
- | |
449 | - | ||
450 | ipc_answer_1(iid, EOK, device->handle); |
407 | ipc_answer_1(iid, EOK, device->handle); |
451 | - | ||
452 | process_pending_lookup(); |
- | |
453 | } |
408 | } |
454 | 409 | ||
455 | /** |
410 | /** |
456 | * |
411 | * |
457 | */ |
412 | */ |
458 | static int devmap_device_unregister(ipc_callid_t iid, ipc_call_t *icall, |
413 | static int devmap_device_unregister(ipc_callid_t iid, ipc_call_t *icall, |
459 | devmap_driver_t *driver) |
414 | devmap_driver_t *driver) |
460 | { |
415 | { |
461 | /* TODO */ |
416 | /* TODO */ |
462 | return EOK; |
417 | return EOK; |
463 | } |
418 | } |
464 | 419 | ||
465 | /** Connect client to the device. |
420 | /** Connect client to the device. |
466 | * |
421 | * |
467 | * Find device driver owning requested device and forward |
422 | * Find device driver owning requested device and forward |
468 | * the message to it. |
423 | * the message to it. |
469 | * |
424 | * |
470 | */ |
425 | */ |
471 | static void devmap_forward(ipc_callid_t callid, ipc_call_t *call) |
426 | static void devmap_forward(ipc_callid_t callid, ipc_call_t *call) |
472 | { |
427 | { |
473 | /* |
428 | /* |
474 | * Get handle from request |
429 | * Get handle from request |
475 | */ |
430 | */ |
476 | dev_handle_t handle = IPC_GET_ARG2(*call); |
431 | dev_handle_t handle = IPC_GET_ARG2(*call); |
477 | devmap_device_t *dev = devmap_device_find_handle(handle); |
432 | devmap_device_t *dev = devmap_device_find_handle(handle); |
478 | 433 | ||
479 | if ((dev == NULL) || (dev->driver == NULL) || (dev->driver->phone == 0)) { |
434 | if ((dev == NULL) || (dev->driver == NULL) || (dev->driver->phone == 0)) { |
480 | ipc_answer_0(callid, ENOENT); |
435 | ipc_answer_0(callid, ENOENT); |
481 | return; |
436 | return; |
482 | } |
437 | } |
483 | 438 | ||
484 | ipc_forward_fast(callid, dev->driver->phone, dev->handle, |
439 | ipc_forward_fast(callid, dev->driver->phone, dev->handle, |
485 | IPC_GET_ARG3(*call), 0, IPC_FF_NONE); |
440 | IPC_GET_ARG3(*call), 0, IPC_FF_NONE); |
486 | } |
441 | } |
487 | 442 | ||
488 | /** Find handle for device instance identified by name. |
443 | /** Find handle for device instance identified by name. |
489 | * |
444 | * |
490 | * In answer will be send EOK and device handle in arg1 or a error |
445 | * In answer will be send EOK and device handle in arg1 or a error |
491 | * code from errno.h. |
446 | * code from errno.h. |
492 | * |
447 | * |
493 | */ |
448 | */ |
494 | static void devmap_get_handle(ipc_callid_t iid, ipc_call_t *icall) |
449 | static void devmap_get_handle(ipc_callid_t iid, ipc_call_t *icall) |
495 | { |
450 | { |
496 | /* |
451 | /* |
497 | * Wait for incoming message with device name (but do not |
452 | * Wait for incoming message with device name (but do not |
498 | * read the name itself until the buffer is allocated). |
453 | * read the name itself until the buffer is allocated). |
499 | */ |
454 | */ |
500 | ipc_callid_t callid; |
455 | ipc_callid_t callid; |
501 | size_t size; |
456 | size_t size; |
502 | if (!ipc_data_write_receive(&callid, &size)) { |
457 | if (!ipc_data_write_receive(&callid, &size)) { |
503 | ipc_answer_0(callid, EREFUSED); |
458 | ipc_answer_0(callid, EREFUSED); |
504 | ipc_answer_0(iid, EREFUSED); |
459 | ipc_answer_0(iid, EREFUSED); |
505 | return; |
460 | return; |
506 | } |
461 | } |
507 | 462 | ||
508 | if ((size < 1) || (size > DEVMAP_NAME_MAXLEN)) { |
463 | if ((size < 1) || (size > DEVMAP_NAME_MAXLEN)) { |
509 | ipc_answer_0(callid, EINVAL); |
464 | ipc_answer_0(callid, EINVAL); |
510 | ipc_answer_0(iid, EREFUSED); |
465 | ipc_answer_0(iid, EREFUSED); |
511 | return; |
466 | return; |
512 | } |
467 | } |
513 | 468 | ||
514 | /* |
469 | /* |
515 | * Allocate buffer for device name. |
470 | * Allocate buffer for device name. |
516 | */ |
471 | */ |
517 | char *name = (char *) malloc(size + 1); |
472 | char *name = (char *) malloc(size + 1); |
518 | if (name == NULL) { |
473 | if (name == NULL) { |
519 | ipc_answer_0(callid, ENOMEM); |
474 | ipc_answer_0(callid, ENOMEM); |
520 | ipc_answer_0(iid, EREFUSED); |
475 | ipc_answer_0(iid, EREFUSED); |
521 | return; |
476 | return; |
522 | } |
477 | } |
523 | 478 | ||
524 | /* |
479 | /* |
525 | * Send confirmation to sender and get data into buffer. |
480 | * Send confirmation to sender and get data into buffer. |
526 | */ |
481 | */ |
527 | ipcarg_t retval = ipc_data_write_finalize(callid, name, size); |
482 | ipcarg_t retval = ipc_data_write_finalize(callid, name, size); |
528 | if (retval != EOK) { |
483 | if (retval != EOK) { |
529 | ipc_answer_0(iid, EREFUSED); |
484 | ipc_answer_0(iid, EREFUSED); |
530 | free(name); |
485 | free(name); |
531 | return; |
486 | return; |
532 | } |
487 | } |
533 | name[size] = '\0'; |
488 | name[size] = '\0'; |
534 | 489 | ||
535 | /* |
490 | /* |
536 | * Find device name in linked list of known devices. |
491 | * Find device name in linked list of known devices. |
537 | */ |
492 | */ |
538 | const devmap_device_t *dev = devmap_device_find_name(name); |
493 | const devmap_device_t *dev = devmap_device_find_name(name); |
539 | 494 | ||
540 | /* |
495 | /* |
541 | * Device was not found. |
496 | * Device was not found. |
542 | */ |
497 | */ |
543 | if (dev == NULL) { |
498 | if (dev == NULL) { |
544 | if (IPC_GET_ARG1(*icall) & IPC_FLAG_BLOCKING) { |
499 | if (IPC_GET_ARG1(*icall) & IPC_FLAG_BLOCKING) { |
545 | /* Blocking lookup, add to pending list */ |
500 | /* Blocking lookup, add to pending list */ |
546 | pending_req_t *pr = (pending_req_t *) malloc(sizeof(pending_req_t)); |
501 | pending_req_t *pr = (pending_req_t *) malloc(sizeof(pending_req_t)); |
547 | if (!pr) { |
502 | if (!pr) { |
548 | ipc_answer_0(iid, ENOMEM); |
503 | ipc_answer_0(iid, ENOMEM); |
549 | free(name); |
504 | free(name); |
550 | return; |
505 | return; |
551 | } |
506 | } |
552 | 507 | ||
553 | pr->name = name; |
508 | pr->name = name; |
554 | pr->callid = iid; |
509 | pr->callid = iid; |
555 | list_append(&pr->link, &pending_req); |
510 | list_append(&pr->link, &pending_req); |
556 | return; |
511 | return; |
557 | } |
512 | } |
558 | 513 | ||
559 | ipc_answer_0(iid, ENOENT); |
514 | ipc_answer_0(iid, ENOENT); |
560 | free(name); |
515 | free(name); |
561 | return; |
516 | return; |
562 | } |
517 | } |
563 | 518 | ||
564 | ipc_answer_1(iid, EOK, dev->handle); |
519 | ipc_answer_1(iid, EOK, dev->handle); |
565 | free(name); |
520 | free(name); |
566 | } |
521 | } |
567 | 522 | ||
568 | /** Find name of device identified by id and send it to caller. |
523 | /** Find name of device identified by id and send it to caller. |
569 | * |
524 | * |
570 | */ |
525 | */ |
571 | static void devmap_get_name(ipc_callid_t iid, ipc_call_t *icall) |
526 | static void devmap_get_name(ipc_callid_t iid, ipc_call_t *icall) |
572 | { |
527 | { |
573 | const devmap_device_t *device = devmap_device_find_handle(IPC_GET_ARG1(*icall)); |
528 | const devmap_device_t *device = devmap_device_find_handle(IPC_GET_ARG1(*icall)); |
574 | 529 | ||
575 | /* |
530 | /* |
576 | * Device not found. |
531 | * Device not found. |
577 | */ |
532 | */ |
578 | if (device == NULL) { |
533 | if (device == NULL) { |
579 | ipc_answer_0(iid, ENOENT); |
534 | ipc_answer_0(iid, ENOENT); |
580 | return; |
535 | return; |
581 | } |
536 | } |
582 | 537 | ||
583 | ipc_answer_0(iid, EOK); |
538 | ipc_answer_0(iid, EOK); |
584 | 539 | ||
585 | size_t name_size = str_size(device->name); |
540 | size_t name_size = str_size(device->name); |
586 | 541 | ||
587 | /* FIXME: |
542 | /* FIXME: |
588 | * We have no channel from DEVMAP to client, therefore |
543 | * We have no channel from DEVMAP to client, therefore |
589 | * sending must be initiated by client. |
544 | * sending must be initiated by client. |
590 | * |
545 | * |
591 | * int rc = ipc_data_write_send(phone, device->name, name_size); |
546 | * int rc = ipc_data_write_send(phone, device->name, name_size); |
592 | * if (rc != EOK) { |
547 | * if (rc != EOK) { |
593 | * async_wait_for(req, NULL); |
548 | * async_wait_for(req, NULL); |
594 | * return rc; |
549 | * return rc; |
595 | * } |
550 | * } |
596 | */ |
551 | */ |
597 | 552 | ||
598 | /* TODO: send name in response */ |
553 | /* TODO: send name in response */ |
599 | } |
554 | } |
600 | 555 | ||
601 | static void devmap_get_count(ipc_callid_t iid, ipc_call_t *icall) |
556 | static void devmap_get_count(ipc_callid_t iid, ipc_call_t *icall) |
602 | { |
557 | { |
603 | futex_down(&devices_list_futex); |
- | |
604 | ipc_answer_1(iid, EOK, list_count(&devices_list)); |
558 | ipc_answer_1(iid, EOK, list_count(&devices_list)); |
605 | futex_up(&devices_list_futex); |
- | |
606 | } |
559 | } |
607 | 560 | ||
608 | static void devmap_get_devices(ipc_callid_t iid, ipc_call_t *icall) |
561 | static void devmap_get_devices(ipc_callid_t iid, ipc_call_t *icall) |
609 | { |
562 | { |
610 | futex_down(&devices_list_futex); |
- | |
611 | - | ||
612 | ipc_callid_t callid; |
563 | ipc_callid_t callid; |
613 | size_t size; |
564 | size_t size; |
614 | if (!ipc_data_read_receive(&callid, &size)) { |
565 | if (!ipc_data_read_receive(&callid, &size)) { |
615 | ipc_answer_0(callid, EREFUSED); |
566 | ipc_answer_0(callid, EREFUSED); |
616 | ipc_answer_0(iid, EREFUSED); |
567 | ipc_answer_0(iid, EREFUSED); |
617 | return; |
568 | return; |
618 | } |
569 | } |
619 | 570 | ||
620 | if ((size % sizeof(dev_desc_t)) != 0) { |
571 | if ((size % sizeof(dev_desc_t)) != 0) { |
621 | ipc_answer_0(callid, EINVAL); |
572 | ipc_answer_0(callid, EINVAL); |
622 | ipc_answer_0(iid, EREFUSED); |
573 | ipc_answer_0(iid, EREFUSED); |
623 | return; |
574 | return; |
624 | } |
575 | } |
625 | 576 | ||
626 | count_t count = size / sizeof(dev_desc_t); |
577 | size_t count = size / sizeof(dev_desc_t); |
627 | dev_desc_t *desc = (dev_desc_t *) malloc(size); |
578 | dev_desc_t *desc = (dev_desc_t *) malloc(size); |
628 | if (desc == NULL) { |
579 | if (desc == NULL) { |
629 | ipc_answer_0(callid, ENOMEM); |
580 | ipc_answer_0(callid, ENOMEM); |
630 | ipc_answer_0(iid, EREFUSED); |
581 | ipc_answer_0(iid, EREFUSED); |
631 | return; |
582 | return; |
632 | } |
583 | } |
633 | 584 | ||
634 | count_t pos = 0; |
585 | size_t pos = 0; |
635 | link_t *item = devices_list.next; |
586 | link_t *item = devices_list.next; |
636 | 587 | ||
637 | while ((item != &devices_list) && (pos < count)) { |
588 | while ((item != &devices_list) && (pos < count)) { |
638 | devmap_device_t *device = list_get_instance(item, devmap_device_t, devices); |
589 | devmap_device_t *device = list_get_instance(item, devmap_device_t, devices); |
639 | 590 | ||
640 | desc[pos].handle = device->handle; |
591 | desc[pos].handle = device->handle; |
641 | str_cpy(desc[pos].name, DEVMAP_NAME_MAXLEN, device->name); |
592 | str_cpy(desc[pos].name, DEVMAP_NAME_MAXLEN, device->name); |
642 | pos++; |
593 | pos++; |
643 | item = item->next; |
594 | item = item->next; |
644 | } |
595 | } |
645 | 596 | ||
646 | ipcarg_t retval = ipc_data_read_finalize(callid, desc, pos * sizeof(dev_desc_t)); |
597 | ipcarg_t retval = ipc_data_read_finalize(callid, desc, pos * sizeof(dev_desc_t)); |
647 | if (retval != EOK) { |
598 | if (retval != EOK) { |
648 | ipc_answer_0(iid, EREFUSED); |
599 | ipc_answer_0(iid, EREFUSED); |
649 | free(desc); |
600 | free(desc); |
650 | return; |
601 | return; |
651 | } |
602 | } |
652 | 603 | ||
653 | free(desc); |
604 | free(desc); |
654 | 605 | ||
655 | futex_up(&devices_list_futex); |
- | |
656 | - | ||
657 | ipc_answer_1(iid, EOK, pos); |
606 | ipc_answer_1(iid, EOK, pos); |
658 | } |
607 | } |
659 | 608 | ||
660 | /** Initialize device mapper. |
609 | /** Initialize device mapper. |
661 | * |
610 | * |
662 | * |
611 | * |
663 | */ |
612 | */ |
664 | static bool devmap_init() |
613 | static bool devmap_init() |
665 | { |
614 | { |
666 | /* Create NULL device entry */ |
615 | /* Create NULL device entry */ |
667 | devmap_device_t *device = (devmap_device_t *) malloc(sizeof(devmap_device_t)); |
616 | devmap_device_t *device = (devmap_device_t *) malloc(sizeof(devmap_device_t)); |
668 | if (device == NULL) |
617 | if (device == NULL) |
669 | return false; |
618 | return false; |
670 | 619 | ||
671 | device->name = str_dup("null"); |
620 | device->name = str_dup("null"); |
672 | if (device->name == NULL) { |
621 | if (device->name == NULL) { |
673 | free(device); |
622 | free(device); |
674 | return false; |
623 | return false; |
675 | } |
624 | } |
676 | 625 | ||
677 | list_initialize(&(device->devices)); |
626 | list_initialize(&(device->devices)); |
678 | list_initialize(&(device->driver_devices)); |
627 | list_initialize(&(device->driver_devices)); |
679 | 628 | ||
680 | futex_down(&devices_list_futex); |
- | |
681 | - | ||
682 | /* Get unique device handle */ |
629 | /* Get unique device handle */ |
683 | device->handle = devmap_create_handle(); |
630 | device->handle = devmap_create_handle(); |
684 | device->driver = NULL; |
631 | device->driver = NULL; |
685 | 632 | ||
686 | /* Insert device into list of all devices */ |
633 | /* Insert device into list of all devices */ |
687 | list_append(&device->devices, &devices_list); |
634 | list_append(&device->devices, &devices_list); |
688 | 635 | ||
689 | futex_up(&devices_list_futex); |
- | |
690 | - | ||
691 | return true; |
636 | return true; |
692 | } |
637 | } |
693 | 638 | ||
694 | /** Handle connection with device driver. |
639 | /** Handle connection with device driver. |
695 | * |
640 | * |
696 | */ |
641 | */ |
697 | static void devmap_connection_driver(ipc_callid_t iid, ipc_call_t *icall) |
642 | static void devmap_connection_driver(ipc_callid_t iid, ipc_call_t *icall) |
698 | { |
643 | { |
699 | /* Accept connection */ |
644 | /* Accept connection */ |
700 | ipc_answer_0(iid, EOK); |
645 | ipc_answer_0(iid, EOK); |
701 | 646 | ||
702 | devmap_driver_t *driver = NULL; |
647 | devmap_driver_t *driver = NULL; |
703 | devmap_driver_register(&driver); |
648 | devmap_driver_register(&driver); |
704 | 649 | ||
705 | if (NULL == driver) |
650 | if (NULL == driver) |
706 | return; |
651 | return; |
707 | 652 | ||
708 | bool cont = true; |
653 | bool cont = true; |
709 | while (cont) { |
654 | while (cont) { |
710 | ipc_call_t call; |
655 | ipc_call_t call; |
711 | ipc_callid_t callid = async_get_call(&call); |
656 | ipc_callid_t callid = async_get_call(&call); |
712 | 657 | ||
- | 658 | async_serialize_start(); |
|
- | 659 | ||
713 | switch (IPC_GET_METHOD(call)) { |
660 | switch (IPC_GET_METHOD(call)) { |
714 | case IPC_M_PHONE_HUNGUP: |
661 | case IPC_M_PHONE_HUNGUP: |
715 | cont = false; |
662 | cont = false; |
716 | /* Exit thread */ |
663 | async_serialize_end(); |
717 | continue; |
664 | continue; |
718 | case DEVMAP_DRIVER_UNREGISTER: |
665 | case DEVMAP_DRIVER_UNREGISTER: |
719 | if (NULL == driver) |
666 | if (NULL == driver) |
720 | ipc_answer_0(callid, ENOENT); |
667 | ipc_answer_0(callid, ENOENT); |
721 | else |
668 | else |
722 | ipc_answer_0(callid, EOK); |
669 | ipc_answer_0(callid, EOK); |
723 | break; |
670 | break; |
724 | case DEVMAP_DEVICE_REGISTER: |
671 | case DEVMAP_DEVICE_REGISTER: |
725 | /* Register one instance of device */ |
672 | /* Register one instance of device */ |
726 | devmap_device_register(callid, &call, driver); |
673 | devmap_device_register(callid, &call, driver); |
727 | break; |
674 | break; |
728 | case DEVMAP_DEVICE_UNREGISTER: |
675 | case DEVMAP_DEVICE_UNREGISTER: |
729 | /* Remove instance of device identified by handler */ |
676 | /* Remove instance of device identified by handler */ |
730 | devmap_device_unregister(callid, &call, driver); |
677 | devmap_device_unregister(callid, &call, driver); |
731 | break; |
678 | break; |
732 | case DEVMAP_DEVICE_GET_HANDLE: |
679 | case DEVMAP_DEVICE_GET_HANDLE: |
733 | devmap_get_handle(callid, &call); |
680 | devmap_get_handle(callid, &call); |
734 | break; |
681 | break; |
735 | case DEVMAP_DEVICE_GET_NAME: |
682 | case DEVMAP_DEVICE_GET_NAME: |
736 | devmap_get_name(callid, &call); |
683 | devmap_get_name(callid, &call); |
737 | break; |
684 | break; |
738 | default: |
685 | default: |
739 | if (!(callid & IPC_CALLID_NOTIFICATION)) |
686 | if (!(callid & IPC_CALLID_NOTIFICATION)) |
740 | ipc_answer_0(callid, ENOENT); |
687 | ipc_answer_0(callid, ENOENT); |
741 | } |
688 | } |
- | 689 | ||
- | 690 | async_serialize_end(); |
|
742 | } |
691 | } |
743 | 692 | ||
744 | if (NULL != driver) { |
693 | if (NULL != driver) { |
745 | /* |
694 | /* |
746 | * Unregister the device driver and all its devices. |
695 | * Unregister the device driver and all its devices. |
747 | */ |
696 | */ |
- | 697 | ||
- | 698 | async_serialize_start(); |
|
- | 699 | ||
748 | devmap_driver_unregister(driver); |
700 | devmap_driver_unregister(driver); |
749 | driver = NULL; |
701 | driver = NULL; |
- | 702 | ||
- | 703 | async_serialize_end(); |
|
750 | } |
704 | } |
751 | } |
705 | } |
752 | 706 | ||
753 | /** Handle connection with device client. |
707 | /** Handle connection with device client. |
754 | * |
708 | * |
755 | */ |
709 | */ |
756 | static void devmap_connection_client(ipc_callid_t iid, ipc_call_t *icall) |
710 | static void devmap_connection_client(ipc_callid_t iid, ipc_call_t *icall) |
757 | { |
711 | { |
758 | /* Accept connection */ |
712 | /* Accept connection */ |
759 | ipc_answer_0(iid, EOK); |
713 | ipc_answer_0(iid, EOK); |
760 | 714 | ||
761 | bool cont = true; |
715 | bool cont = true; |
762 | while (cont) { |
716 | while (cont) { |
763 | ipc_call_t call; |
717 | ipc_call_t call; |
764 | ipc_callid_t callid = async_get_call(&call); |
718 | ipc_callid_t callid = async_get_call(&call); |
765 | 719 | ||
- | 720 | async_serialize_start(); |
|
- | 721 | ||
766 | switch (IPC_GET_METHOD(call)) { |
722 | switch (IPC_GET_METHOD(call)) { |
767 | case IPC_M_PHONE_HUNGUP: |
723 | case IPC_M_PHONE_HUNGUP: |
768 | cont = false; |
724 | cont = false; |
769 | /* Exit thread */ |
725 | async_serialize_end(); |
770 | continue; |
726 | continue; |
771 | case DEVMAP_DEVICE_GET_HANDLE: |
727 | case DEVMAP_DEVICE_GET_HANDLE: |
772 | devmap_get_handle(callid, &call); |
728 | devmap_get_handle(callid, &call); |
773 | break; |
729 | break; |
774 | case DEVMAP_DEVICE_GET_NAME: |
730 | case DEVMAP_DEVICE_GET_NAME: |
775 | devmap_get_name(callid, &call); |
731 | devmap_get_name(callid, &call); |
776 | break; |
732 | break; |
777 | case DEVMAP_DEVICE_GET_COUNT: |
733 | case DEVMAP_DEVICE_GET_COUNT: |
778 | devmap_get_count(callid, &call); |
734 | devmap_get_count(callid, &call); |
779 | break; |
735 | break; |
780 | case DEVMAP_DEVICE_GET_DEVICES: |
736 | case DEVMAP_DEVICE_GET_DEVICES: |
781 | devmap_get_devices(callid, &call); |
737 | devmap_get_devices(callid, &call); |
782 | break; |
738 | break; |
783 | default: |
739 | default: |
784 | if (!(callid & IPC_CALLID_NOTIFICATION)) |
740 | if (!(callid & IPC_CALLID_NOTIFICATION)) |
785 | ipc_answer_0(callid, ENOENT); |
741 | ipc_answer_0(callid, ENOENT); |
786 | } |
742 | } |
- | 743 | ||
- | 744 | async_serialize_end(); |
|
787 | } |
745 | } |
788 | } |
746 | } |
789 | 747 | ||
790 | /** Function for handling connections to devmap |
748 | /** Function for handling connections to devmap |
791 | * |
749 | * |
792 | */ |
750 | */ |
793 | static void devmap_connection(ipc_callid_t iid, ipc_call_t *icall) |
751 | static void devmap_connection(ipc_callid_t iid, ipc_call_t *icall) |
794 | { |
752 | { |
795 | /* Select interface */ |
753 | /* Select interface */ |
796 | switch ((ipcarg_t) (IPC_GET_ARG1(*icall))) { |
754 | switch ((ipcarg_t) (IPC_GET_ARG1(*icall))) { |
797 | case DEVMAP_DRIVER: |
755 | case DEVMAP_DRIVER: |
798 | devmap_connection_driver(iid, icall); |
756 | devmap_connection_driver(iid, icall); |
799 | break; |
757 | break; |
800 | case DEVMAP_CLIENT: |
758 | case DEVMAP_CLIENT: |
801 | devmap_connection_client(iid, icall); |
759 | devmap_connection_client(iid, icall); |
802 | break; |
760 | break; |
803 | case DEVMAP_CONNECT_TO_DEVICE: |
761 | case DEVMAP_CONNECT_TO_DEVICE: |
804 | /* Connect client to selected device */ |
762 | /* Connect client to selected device */ |
805 | devmap_forward(iid, icall); |
763 | devmap_forward(iid, icall); |
806 | break; |
764 | break; |
807 | default: |
765 | default: |
808 | /* No such interface */ |
766 | /* No such interface */ |
809 | ipc_answer_0(iid, ENOENT); |
767 | ipc_answer_0(iid, ENOENT); |
810 | } |
768 | } |
811 | } |
769 | } |
812 | 770 | ||
813 | /** |
771 | /** |
814 | * |
772 | * |
815 | */ |
773 | */ |
816 | int main(int argc, char *argv[]) |
774 | int main(int argc, char *argv[]) |
817 | { |
775 | { |
818 | printf(NAME ": HelenOS Device Mapper\n"); |
776 | printf(NAME ": HelenOS Device Mapper\n"); |
819 | 777 | ||
820 | if (!devmap_init()) { |
778 | if (!devmap_init()) { |
821 | printf(NAME ": Error while initializing service\n"); |
779 | printf(NAME ": Error while initializing service\n"); |
822 | return -1; |
780 | return -1; |
823 | } |
781 | } |
824 | 782 | ||
825 | /* Set a handler of incomming connections */ |
783 | /* Set a handler of incomming connections and |
- | 784 | pending operations */ |
|
- | 785 | async_set_pending(process_pending_lookup); |
|
826 | async_set_client_connection(devmap_connection); |
786 | async_set_client_connection(devmap_connection); |
827 | 787 | ||
828 | /* Register device mapper at naming service */ |
788 | /* Register device mapper at naming service */ |
829 | ipcarg_t phonead; |
789 | ipcarg_t phonead; |
830 | if (ipc_connect_to_me(PHONE_NS, SERVICE_DEVMAP, 0, 0, &phonead) != 0) |
790 | if (ipc_connect_to_me(PHONE_NS, SERVICE_DEVMAP, 0, 0, &phonead) != 0) |
831 | return -1; |
791 | return -1; |
832 | 792 | ||
833 | printf(NAME ": Accepting connections\n"); |
793 | printf(NAME ": Accepting connections\n"); |
834 | async_manager(); |
794 | async_manager(); |
835 | 795 | ||
836 | /* Never reached */ |
796 | /* Never reached */ |
837 | return 0; |
797 | return 0; |
838 | } |
798 | } |
839 | 799 | ||
840 | /** |
800 | /** |
841 | * @} |
801 | * @} |
842 | */ |
802 | */ |
843 | 803 |