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