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8d4f9d0e | 1 | /* |
85447060 MK |
2 | * Siano core API module |
3 | * | |
4 | * This file contains implementation for the interface to sms core component | |
5 | * | |
6 | * author: Anatoly Greenblat | |
8d4f9d0e | 7 | * |
85447060 | 8 | * Copyright (c), 2005-2008 Siano Mobile Silicon, Inc. |
8d4f9d0e ST |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
85447060 MK |
11 | * it under the terms of the GNU General Public License version 3 as |
12 | * published by the Free Software Foundation; | |
8d4f9d0e | 13 | * |
85447060 MK |
14 | * Software distributed under the License is distributed on an "AS IS" |
15 | * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. | |
8d4f9d0e | 16 | * |
85447060 | 17 | * See the GNU General Public License for more details. |
8d4f9d0e ST |
18 | * |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | */ | |
23 | ||
2e5c1ec8 MK |
24 | #include <linux/kernel.h> |
25 | #include <linux/init.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/dma-mapping.h> | |
29 | #include <linux/delay.h> | |
30 | #include <asm/io.h> | |
31 | ||
2e5c1ec8 MK |
32 | #include <linux/firmware.h> |
33 | ||
34 | #include "smscoreapi.h" | |
2e5c1ec8 | 35 | |
2e5c1ec8 MK |
36 | typedef struct _smscore_device_notifyee |
37 | { | |
38 | struct list_head entry; | |
39 | hotplug_t hotplug; | |
40 | } smscore_device_notifyee_t; | |
41 | ||
42 | typedef struct _smscore_client | |
43 | { | |
44 | struct list_head entry; | |
45 | smscore_device_t *coredev; | |
46 | ||
47 | void *context; | |
48 | ||
49 | int data_type; | |
50 | ||
51 | onresponse_t onresponse_handler; | |
52 | onremove_t onremove_handler; | |
53 | } *psmscore_client_t; | |
54 | ||
55 | typedef struct _smscore_subclient | |
56 | { | |
57 | struct list_head entry; | |
58 | smscore_client_t *client; | |
59 | ||
60 | int id; | |
61 | } smscore_subclient_t; | |
62 | ||
63 | typedef struct _smscore_device | |
64 | { | |
65 | struct list_head entry; | |
66 | ||
67 | struct list_head clients; | |
68 | struct list_head subclients; | |
69 | spinlock_t clientslock; | |
70 | ||
71 | struct list_head buffers; | |
72 | spinlock_t bufferslock; | |
73 | int num_buffers; | |
74 | ||
75 | void *common_buffer; | |
76 | int common_buffer_size; | |
77 | dma_addr_t common_buffer_phys; | |
78 | ||
79 | void *context; | |
80 | struct device *device; | |
81 | ||
82 | char devpath[32]; | |
83 | unsigned long device_flags; | |
84 | ||
85 | setmode_t setmode_handler; | |
86 | detectmode_t detectmode_handler; | |
87 | sendrequest_t sendrequest_handler; | |
88 | preload_t preload_handler; | |
89 | postload_t postload_handler; | |
90 | ||
91 | int mode, modes_supported; | |
92 | ||
93 | struct completion version_ex_done, data_download_done, trigger_done; | |
94 | struct completion init_device_done, reload_start_done, resume_done; | |
95 | } *psmscore_device_t; | |
96 | ||
97 | typedef struct _smscore_registry_entry | |
98 | { | |
99 | struct list_head entry; | |
100 | char devpath[32]; | |
101 | int mode; | |
102 | } smscore_registry_entry_t; | |
103 | ||
104 | struct list_head g_smscore_notifyees; | |
105 | struct list_head g_smscore_devices; | |
106 | kmutex_t g_smscore_deviceslock; | |
107 | ||
108 | struct list_head g_smscore_registry; | |
109 | kmutex_t g_smscore_registrylock; | |
110 | ||
111 | static int default_mode = 1; | |
112 | module_param(default_mode, int, 0644); | |
113 | MODULE_PARM_DESC(default_mode, "default firmware id (device mode)"); | |
114 | ||
115 | int smscore_registry_getmode(char* devpath) | |
116 | { | |
117 | smscore_registry_entry_t *entry; | |
118 | struct list_head *next; | |
119 | ||
120 | kmutex_lock(&g_smscore_registrylock); | |
121 | ||
122 | for (next = g_smscore_registry.next; next != &g_smscore_registry; next = next->next) | |
123 | { | |
124 | entry = (smscore_registry_entry_t *) next; | |
125 | ||
126 | if (!strcmp(entry->devpath, devpath)) | |
127 | { | |
128 | kmutex_unlock(&g_smscore_registrylock); | |
129 | return entry->mode; | |
130 | } | |
131 | } | |
132 | ||
133 | entry = (smscore_registry_entry_t *) kmalloc(sizeof(smscore_registry_entry_t), GFP_KERNEL); | |
134 | if (entry) | |
135 | { | |
136 | entry->mode = default_mode; | |
137 | strcpy(entry->devpath, devpath); | |
138 | ||
139 | list_add(&entry->entry, &g_smscore_registry); | |
140 | } | |
141 | ||
142 | kmutex_unlock(&g_smscore_registrylock); | |
143 | ||
144 | return default_mode; | |
145 | } | |
146 | ||
147 | void smscore_registry_setmode(char* devpath, int mode) | |
148 | { | |
149 | smscore_registry_entry_t *entry; | |
150 | struct list_head *next; | |
151 | ||
152 | kmutex_lock(&g_smscore_registrylock); | |
153 | ||
154 | for (next = g_smscore_registry.next; next != &g_smscore_registry; next = next->next) | |
155 | { | |
156 | entry = (smscore_registry_entry_t *) next; | |
157 | ||
158 | if (!strcmp(entry->devpath, devpath)) | |
159 | { | |
160 | entry->mode = mode; | |
161 | break; | |
162 | } | |
163 | } | |
164 | ||
165 | kmutex_unlock(&g_smscore_registrylock); | |
166 | } | |
167 | ||
168 | ||
169 | void list_add_locked(struct list_head *new, struct list_head *head, spinlock_t* lock) | |
170 | { | |
171 | unsigned long flags; | |
172 | ||
173 | spin_lock_irqsave(lock, flags); | |
174 | ||
175 | list_add(new, head); | |
176 | ||
177 | spin_unlock_irqrestore(lock, flags); | |
178 | } | |
179 | ||
180 | /** | |
181 | * register a client callback that called when device plugged in/unplugged | |
182 | * NOTE: if devices exist callback is called immediately for each device | |
183 | * | |
184 | * @param hotplug callback | |
185 | * | |
186 | * @return 0 on success, <0 on error. | |
187 | */ | |
188 | int smscore_register_hotplug(hotplug_t hotplug) | |
189 | { | |
190 | smscore_device_notifyee_t *notifyee; | |
191 | struct list_head *next, *first; | |
192 | int rc = 0; | |
193 | ||
194 | kmutex_lock(&g_smscore_deviceslock); | |
195 | ||
196 | notifyee = kmalloc(sizeof(smscore_device_notifyee_t), GFP_KERNEL); | |
197 | if (notifyee) | |
198 | { | |
199 | // now notify callback about existing devices | |
200 | first = &g_smscore_devices; | |
201 | for (next = first->next; next != first && !rc; next = next->next) | |
202 | { | |
203 | smscore_device_t *coredev = (smscore_device_t *) next; | |
204 | rc = hotplug(coredev, coredev->device, 1); | |
205 | } | |
206 | ||
207 | if (rc >= 0) | |
208 | { | |
209 | notifyee->hotplug = hotplug; | |
210 | list_add(¬ifyee->entry, &g_smscore_notifyees); | |
211 | } | |
212 | else | |
213 | kfree(notifyee); | |
214 | } | |
215 | else | |
216 | rc = -ENOMEM; | |
217 | ||
218 | kmutex_unlock(&g_smscore_deviceslock); | |
219 | ||
220 | return rc; | |
221 | } | |
222 | ||
223 | /** | |
224 | * unregister a client callback that called when device plugged in/unplugged | |
225 | * | |
226 | * @param hotplug callback | |
227 | * | |
228 | */ | |
229 | void smscore_unregister_hotplug(hotplug_t hotplug) | |
230 | { | |
231 | struct list_head *next, *first; | |
232 | ||
233 | kmutex_lock(&g_smscore_deviceslock); | |
234 | ||
235 | first = &g_smscore_notifyees; | |
236 | ||
237 | for (next = first->next; next != first;) | |
238 | { | |
239 | smscore_device_notifyee_t *notifyee = (smscore_device_notifyee_t *) next; | |
240 | next = next->next; | |
241 | ||
242 | if (notifyee->hotplug == hotplug) | |
243 | { | |
244 | list_del(¬ifyee->entry); | |
245 | kfree(notifyee); | |
246 | } | |
247 | } | |
248 | ||
249 | kmutex_unlock(&g_smscore_deviceslock); | |
250 | } | |
251 | ||
252 | void smscore_notify_clients(smscore_device_t *coredev) | |
253 | { | |
254 | smscore_client_t* client; | |
255 | ||
256 | // the client must call smscore_unregister_client from remove handler | |
257 | while (!list_empty(&coredev->clients)) | |
258 | { | |
259 | client = (smscore_client_t *) coredev->clients.next; | |
260 | client->onremove_handler(client->context); | |
261 | } | |
262 | } | |
263 | ||
264 | int smscore_notify_callbacks(smscore_device_t *coredev, struct device *device, int arrival) | |
265 | { | |
266 | struct list_head *next, *first; | |
267 | int rc = 0; | |
268 | ||
269 | // note: must be called under g_deviceslock | |
270 | ||
271 | first = &g_smscore_notifyees; | |
272 | ||
273 | for (next = first->next; next != first; next = next->next) | |
274 | { | |
275 | rc = ((smscore_device_notifyee_t *) next)->hotplug(coredev, device, arrival); | |
276 | if (rc < 0) | |
277 | break; | |
278 | } | |
279 | ||
280 | return rc; | |
281 | } | |
282 | ||
283 | smscore_buffer_t *smscore_createbuffer(u8* buffer, void* common_buffer, dma_addr_t common_buffer_phys) | |
284 | { | |
285 | smscore_buffer_t *cb = kmalloc(sizeof(smscore_buffer_t), GFP_KERNEL); | |
286 | if (!cb) | |
287 | { | |
288 | printk(KERN_INFO "%s kmalloc(...) failed\n", __FUNCTION__); | |
289 | return NULL; | |
290 | } | |
291 | ||
292 | cb->p = buffer; | |
293 | cb->offset_in_common = buffer - (u8*) common_buffer; | |
294 | cb->phys = common_buffer_phys + cb->offset_in_common; | |
295 | ||
296 | return cb; | |
297 | } | |
298 | ||
299 | /** | |
300 | * creates coredev object for a device, prepares buffers, creates buffer mappings, notifies | |
301 | * registered hotplugs about new device. | |
302 | * | |
303 | * @param params device pointer to struct with device specific parameters and handlers | |
304 | * @param coredev pointer to a value that receives created coredev object | |
305 | * | |
306 | * @return 0 on success, <0 on error. | |
307 | */ | |
308 | int smscore_register_device(smsdevice_params_t *params, smscore_device_t **coredev) | |
309 | { | |
310 | smscore_device_t* dev; | |
311 | u8 *buffer; | |
312 | ||
313 | dev = kzalloc(sizeof(smscore_device_t), GFP_KERNEL); | |
314 | if (!dev) | |
315 | { | |
316 | printk(KERN_INFO "%s kzalloc(...) failed\n", __FUNCTION__); | |
317 | return -ENOMEM; | |
318 | } | |
319 | ||
320 | // init list entry so it could be safe in smscore_unregister_device | |
321 | INIT_LIST_HEAD(&dev->entry); | |
322 | ||
323 | // init queues | |
324 | INIT_LIST_HEAD(&dev->clients); | |
325 | INIT_LIST_HEAD(&dev->subclients); | |
326 | INIT_LIST_HEAD(&dev->buffers); | |
327 | ||
328 | // init locks | |
329 | spin_lock_init(&dev->clientslock); | |
330 | spin_lock_init(&dev->bufferslock); | |
331 | ||
332 | // init completion events | |
333 | init_completion(&dev->version_ex_done); | |
334 | init_completion(&dev->data_download_done); | |
335 | init_completion(&dev->trigger_done); | |
336 | init_completion(&dev->init_device_done); | |
337 | init_completion(&dev->reload_start_done); | |
338 | init_completion(&dev->resume_done); | |
339 | ||
340 | // alloc common buffer | |
341 | dev->common_buffer_size = params->buffer_size * params->num_buffers; | |
342 | dev->common_buffer = dma_alloc_coherent(NULL, dev->common_buffer_size, &dev->common_buffer_phys, GFP_KERNEL | GFP_DMA); | |
343 | if (!dev->common_buffer) | |
344 | { | |
345 | smscore_unregister_device(dev); | |
346 | return -ENOMEM; | |
347 | } | |
348 | ||
349 | // prepare dma buffers | |
350 | for (buffer = dev->common_buffer; dev->num_buffers < params->num_buffers; dev->num_buffers ++, buffer += params->buffer_size) | |
351 | { | |
352 | smscore_buffer_t *cb = smscore_createbuffer(buffer, dev->common_buffer, dev->common_buffer_phys); | |
353 | if (!cb) | |
354 | { | |
355 | smscore_unregister_device(dev); | |
356 | return -ENOMEM; | |
357 | } | |
358 | ||
359 | smscore_putbuffer(dev, cb); | |
360 | } | |
361 | ||
362 | printk(KERN_INFO "%s allocated %d buffers\n", __FUNCTION__, dev->num_buffers); | |
363 | ||
364 | dev->mode = DEVICE_MODE_NONE; | |
365 | dev->context = params->context; | |
366 | dev->device = params->device; | |
367 | dev->setmode_handler = params->setmode_handler; | |
368 | dev->detectmode_handler = params->detectmode_handler; | |
369 | dev->sendrequest_handler = params->sendrequest_handler; | |
370 | dev->preload_handler = params->preload_handler; | |
371 | dev->postload_handler = params->postload_handler; | |
372 | ||
373 | dev->device_flags = params->flags; | |
374 | strcpy(dev->devpath, params->devpath); | |
375 | ||
376 | // add device to devices list | |
377 | kmutex_lock(&g_smscore_deviceslock); | |
378 | list_add(&dev->entry, &g_smscore_devices); | |
379 | kmutex_unlock(&g_smscore_deviceslock); | |
380 | ||
381 | *coredev = dev; | |
382 | ||
383 | printk(KERN_INFO "%s device %p created\n", __FUNCTION__, dev); | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
388 | /** | |
389 | * sets initial device mode and notifies client hotplugs that device is ready | |
390 | * | |
391 | * @param coredev pointer to a coredev object returned by smscore_register_device | |
392 | * | |
393 | * @return 0 on success, <0 on error. | |
394 | */ | |
395 | int smscore_start_device(smscore_device_t *coredev) | |
396 | { | |
397 | int rc = smscore_set_device_mode(coredev, smscore_registry_getmode(coredev->devpath)); | |
398 | if (rc < 0) | |
399 | return rc; | |
400 | ||
401 | kmutex_lock(&g_smscore_deviceslock); | |
402 | ||
403 | rc = smscore_notify_callbacks(coredev, coredev->device, 1); | |
404 | ||
405 | printk(KERN_INFO "%s device %p started, rc %d\n", __FUNCTION__, coredev, rc); | |
406 | ||
407 | kmutex_unlock(&g_smscore_deviceslock); | |
408 | ||
409 | return rc; | |
410 | } | |
411 | ||
412 | int smscore_sendrequest_and_wait(smscore_device_t *coredev, void* buffer, size_t size, struct completion *completion) | |
413 | { | |
414 | int rc = coredev->sendrequest_handler(coredev->context, buffer, size); | |
415 | if (rc < 0) | |
416 | return rc; | |
417 | ||
418 | return wait_for_completion_timeout(completion, msecs_to_jiffies(1000)) ? 0 : -ETIME; | |
419 | } | |
420 | ||
421 | int smscore_load_firmware_family2(smscore_device_t *coredev, void *buffer, size_t size) | |
422 | { | |
423 | SmsFirmware_ST* firmware = (SmsFirmware_ST*) buffer; | |
424 | SmsMsgHdr_ST *msg; | |
425 | UINT32 mem_address = firmware->StartAddress; | |
426 | u8* payload = firmware->Payload; | |
427 | int rc = 0; | |
428 | ||
429 | if (coredev->preload_handler) | |
430 | { | |
431 | rc = coredev->preload_handler(coredev->context); | |
432 | if (rc < 0) | |
433 | return rc; | |
434 | } | |
435 | ||
436 | // PAGE_SIZE buffer shall be enough and dma aligned | |
437 | msg = (SmsMsgHdr_ST *) kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA); | |
438 | if (!msg) | |
439 | return -ENOMEM; | |
440 | ||
441 | if (coredev->mode != DEVICE_MODE_NONE) | |
442 | { | |
443 | SMS_INIT_MSG(msg, MSG_SW_RELOAD_START_REQ, sizeof(SmsMsgHdr_ST)); | |
444 | rc = smscore_sendrequest_and_wait(coredev, msg, msg->msgLength, &coredev->reload_start_done); | |
445 | mem_address = *(UINT32*) &payload[20]; | |
446 | } | |
447 | ||
448 | while (size && rc >= 0) | |
449 | { | |
450 | SmsDataDownload_ST *DataMsg = (SmsDataDownload_ST *) msg; | |
451 | int payload_size = min((int) size, SMS_MAX_PAYLOAD_SIZE); | |
452 | ||
453 | SMS_INIT_MSG(msg, MSG_SMS_DATA_DOWNLOAD_REQ, (UINT16)(sizeof(SmsMsgHdr_ST) + sizeof(UINT32) + payload_size)); | |
454 | ||
455 | DataMsg->MemAddr = mem_address; | |
456 | memcpy(DataMsg->Payload, payload, payload_size); | |
457 | ||
458 | if (coredev->device_flags & SMS_ROM_NO_RESPONSE && coredev->mode == DEVICE_MODE_NONE) | |
459 | rc = coredev->sendrequest_handler(coredev->context, DataMsg, DataMsg->xMsgHeader.msgLength); | |
460 | else | |
461 | rc = smscore_sendrequest_and_wait(coredev, DataMsg, DataMsg->xMsgHeader.msgLength, &coredev->data_download_done); | |
462 | ||
463 | payload += payload_size; | |
464 | size -= payload_size; | |
465 | mem_address += payload_size; | |
466 | } | |
467 | ||
468 | if (rc >= 0) | |
469 | { | |
470 | if (coredev->mode == DEVICE_MODE_NONE) | |
471 | { | |
472 | SmsMsgData_ST* TriggerMsg = (SmsMsgData_ST*) msg; | |
473 | ||
474 | SMS_INIT_MSG(msg, MSG_SMS_SWDOWNLOAD_TRIGGER_REQ, sizeof(SmsMsgHdr_ST) + sizeof(UINT32) * 5); | |
475 | ||
476 | TriggerMsg->msgData[0] = firmware->StartAddress; // Entry point | |
477 | TriggerMsg->msgData[1] = 5; // Priority | |
478 | TriggerMsg->msgData[2] = 0x200; // Stack size | |
479 | TriggerMsg->msgData[3] = 0; // Parameter | |
480 | TriggerMsg->msgData[4] = 4; // Task ID | |
481 | ||
482 | if (coredev->device_flags & SMS_ROM_NO_RESPONSE) | |
483 | { | |
484 | rc = coredev->sendrequest_handler(coredev->context, TriggerMsg, TriggerMsg->xMsgHeader.msgLength); | |
485 | msleep(100); | |
486 | } | |
487 | else | |
488 | rc = smscore_sendrequest_and_wait(coredev, TriggerMsg, TriggerMsg->xMsgHeader.msgLength, &coredev->trigger_done); | |
489 | } | |
490 | else | |
491 | { | |
492 | SMS_INIT_MSG(msg, MSG_SW_RELOAD_EXEC_REQ, sizeof(SmsMsgHdr_ST)); | |
493 | ||
494 | rc = coredev->sendrequest_handler(coredev->context, msg, msg->msgLength); | |
495 | } | |
496 | } | |
497 | ||
498 | printk("%s %d \n", __func__, rc); | |
499 | ||
500 | kfree(msg); | |
501 | ||
502 | return (rc >= 0 && coredev->postload_handler) ? | |
503 | coredev->postload_handler(coredev->context) : | |
504 | rc; | |
505 | } | |
506 | ||
507 | /** | |
508 | * loads specified firmware into a buffer and calls device loadfirmware_handler | |
509 | * | |
510 | * @param coredev pointer to a coredev object returned by smscore_register_device | |
511 | * @param filename null-terminated string specifies firmware file name | |
512 | * @param loadfirmware_handler device handler that loads firmware | |
513 | * | |
514 | * @return 0 on success, <0 on error. | |
515 | */ | |
516 | int smscore_load_firmware(smscore_device_t *coredev, char* filename, loadfirmware_t loadfirmware_handler) | |
517 | { | |
518 | int rc = -ENOENT; | |
519 | ||
520 | const struct firmware *fw; | |
521 | u8* fw_buffer; | |
522 | ||
523 | if (loadfirmware_handler == NULL && !(coredev->device_flags & SMS_DEVICE_FAMILY2)) | |
524 | return -EINVAL; | |
525 | ||
526 | rc = request_firmware(&fw, filename, coredev->device); | |
527 | if (rc < 0) | |
528 | { | |
529 | printk(KERN_INFO "%s failed to open \"%s\"\n", __FUNCTION__, filename); | |
530 | return rc; | |
531 | } | |
532 | ||
533 | fw_buffer = kmalloc(ALIGN(fw->size, SMS_ALLOC_ALIGNMENT), GFP_KERNEL | GFP_DMA); | |
534 | if (fw_buffer) | |
535 | { | |
536 | memcpy(fw_buffer, fw->data, fw->size); | |
537 | ||
538 | rc = (coredev->device_flags & SMS_DEVICE_FAMILY2) ? | |
539 | smscore_load_firmware_family2(coredev, fw_buffer, fw->size) : | |
540 | loadfirmware_handler(coredev->context, fw_buffer, fw->size); | |
541 | ||
542 | kfree(fw_buffer); | |
543 | } | |
544 | else | |
545 | { | |
546 | printk(KERN_INFO "%s failed to allocate firmware buffer\n", __FUNCTION__); | |
547 | rc = -ENOMEM; | |
548 | } | |
549 | ||
550 | release_firmware(fw); | |
551 | ||
552 | return rc; | |
553 | } | |
554 | ||
555 | /** | |
556 | * notifies all clients registered with the device, notifies hotplugs, frees all buffers and coredev object | |
557 | * | |
558 | * @param coredev pointer to a coredev object returned by smscore_register_device | |
559 | * | |
560 | * @return 0 on success, <0 on error. | |
561 | */ | |
562 | void smscore_unregister_device(smscore_device_t *coredev) | |
563 | { | |
564 | smscore_buffer_t *cb; | |
565 | int num_buffers = 0; | |
566 | ||
567 | kmutex_lock(&g_smscore_deviceslock); | |
568 | ||
569 | smscore_notify_clients(coredev); | |
570 | smscore_notify_callbacks(coredev, NULL, 0); | |
571 | ||
572 | // at this point all buffers should be back | |
573 | // onresponse must no longer be called | |
574 | ||
575 | while (1) | |
576 | { | |
577 | while ((cb = smscore_getbuffer(coredev))) | |
578 | { | |
579 | kfree(cb); | |
580 | num_buffers ++; | |
581 | } | |
582 | ||
583 | if (num_buffers == coredev->num_buffers) | |
584 | break; | |
585 | ||
586 | printk(KERN_INFO "%s waiting for %d buffer(s)\n", __FUNCTION__, coredev->num_buffers - num_buffers); | |
587 | msleep(100); | |
588 | } | |
589 | ||
590 | printk(KERN_INFO "%s freed %d buffers\n", __FUNCTION__, num_buffers); | |
591 | ||
592 | if (coredev->common_buffer) | |
593 | dma_free_coherent(NULL, coredev->common_buffer_size, coredev->common_buffer, coredev->common_buffer_phys); | |
594 | ||
595 | list_del(&coredev->entry); | |
596 | kfree(coredev); | |
597 | ||
598 | kmutex_unlock(&g_smscore_deviceslock); | |
599 | ||
600 | printk(KERN_INFO "%s device %p destroyed\n", __FUNCTION__, coredev); | |
601 | } | |
602 | ||
603 | int smscore_detect_mode(smscore_device_t *coredev) | |
604 | { | |
605 | void *buffer = kmalloc(sizeof(SmsMsgHdr_ST) + SMS_DMA_ALIGNMENT, GFP_KERNEL | GFP_DMA); | |
606 | SmsMsgHdr_ST *msg = (SmsMsgHdr_ST *) SMS_ALIGN_ADDRESS(buffer); | |
607 | int rc; | |
608 | ||
609 | if (!buffer) | |
610 | return -ENOMEM; | |
611 | ||
612 | SMS_INIT_MSG(msg, MSG_SMS_GET_VERSION_EX_REQ, sizeof(SmsMsgHdr_ST)); | |
613 | ||
614 | rc = smscore_sendrequest_and_wait(coredev, msg, msg->msgLength, &coredev->version_ex_done); | |
615 | if (rc == -ETIME) | |
616 | { | |
617 | printk("%s: MSG_SMS_GET_VERSION_EX_REQ failed first try\n", __FUNCTION__); | |
618 | ||
619 | if (wait_for_completion_timeout(&coredev->resume_done, msecs_to_jiffies(5000))) | |
620 | { | |
621 | rc = smscore_sendrequest_and_wait(coredev, msg, msg->msgLength, &coredev->version_ex_done); | |
622 | if (rc < 0) | |
623 | { | |
624 | printk("%s: MSG_SMS_GET_VERSION_EX_REQ failed second try, rc %d\n", __FUNCTION__, rc); | |
625 | } | |
626 | } | |
627 | else | |
628 | rc = -ETIME; | |
629 | } | |
630 | ||
631 | kfree(buffer); | |
632 | ||
633 | return rc; | |
634 | } | |
635 | ||
636 | char *smscore_fw_lkup[] = | |
637 | { | |
638 | "dvb_nova_12mhz.inp", | |
639 | "dvb_nova_12mhz.inp", | |
640 | "tdmb_nova.inp", | |
641 | "none", | |
642 | "dvb_nova_12mhz.inp", | |
643 | "isdbt_nova_12mhz.inp", | |
644 | "isdbt_nova_12mhz.inp", | |
645 | "cmmb_nova_12mhz.inp", | |
646 | "none", | |
647 | }; | |
648 | ||
649 | /** | |
650 | * calls device handler to change mode of operation | |
651 | * NOTE: stellar/usb may disconnect when changing mode | |
652 | * | |
653 | * @param coredev pointer to a coredev object returned by smscore_register_device | |
654 | * @param mode requested mode of operation | |
655 | * | |
656 | * @return 0 on success, <0 on error. | |
657 | */ | |
658 | int smscore_set_device_mode(smscore_device_t *coredev, int mode) | |
659 | { | |
660 | void *buffer; | |
661 | int rc = 0; | |
662 | ||
663 | if (coredev->device_flags & SMS_DEVICE_FAMILY2) | |
664 | { | |
665 | if (mode < DEVICE_MODE_DVBT || mode > DEVICE_MODE_RAW_TUNER) | |
666 | { | |
667 | printk(KERN_INFO "%s invalid mode specified %d\n", __FUNCTION__, mode); | |
668 | return -EINVAL; | |
669 | } | |
670 | ||
671 | if (!(coredev->device_flags & SMS_DEVICE_NOT_READY)) | |
672 | { | |
673 | rc = smscore_detect_mode(coredev); | |
674 | if (rc < 0) | |
675 | return rc; | |
676 | } | |
677 | ||
678 | if (coredev->mode == mode) | |
679 | { | |
680 | printk(KERN_INFO "%s device mode %d already set\n", __FUNCTION__, mode); | |
681 | return 0; | |
682 | } | |
683 | ||
684 | if (!(coredev->modes_supported & (1 << mode))) | |
685 | { | |
686 | rc = smscore_load_firmware(coredev, smscore_fw_lkup[mode], NULL); | |
687 | if (rc < 0) | |
688 | return rc; | |
689 | } | |
690 | else | |
691 | { | |
692 | printk(KERN_INFO "%s mode %d supported by running firmware\n", __FUNCTION__, mode); | |
693 | } | |
694 | ||
695 | buffer = kmalloc(sizeof(SmsMsgData_ST) + SMS_DMA_ALIGNMENT, GFP_KERNEL | GFP_DMA); | |
696 | if (buffer) | |
697 | { | |
698 | SmsMsgData_ST *msg = (SmsMsgData_ST *) SMS_ALIGN_ADDRESS(buffer); | |
699 | ||
700 | SMS_INIT_MSG(&msg->xMsgHeader, MSG_SMS_INIT_DEVICE_REQ, sizeof(SmsMsgData_ST)); | |
701 | msg->msgData[0] = mode; | |
702 | ||
703 | rc = smscore_sendrequest_and_wait(coredev, msg, msg->xMsgHeader.msgLength, &coredev->init_device_done); | |
704 | ||
705 | kfree(buffer); | |
706 | } | |
707 | else | |
708 | rc = -ENOMEM; | |
709 | } | |
710 | else | |
711 | { | |
712 | if (coredev->detectmode_handler) | |
713 | coredev->detectmode_handler(coredev->context, &coredev->mode); | |
714 | ||
715 | if (coredev->mode != mode && coredev->setmode_handler) | |
716 | rc = coredev->setmode_handler(coredev->context, mode); | |
717 | } | |
718 | ||
719 | smscore_registry_setmode(coredev->devpath, mode); | |
720 | ||
721 | if (rc >= 0) | |
722 | { | |
723 | coredev->mode = mode; | |
724 | coredev->device_flags &= ~SMS_DEVICE_NOT_READY; | |
725 | } | |
726 | ||
727 | return rc; | |
728 | } | |
729 | ||
730 | /** | |
731 | * calls device handler to get current mode of operation | |
732 | * | |
733 | * @param coredev pointer to a coredev object returned by smscore_register_device | |
734 | * | |
735 | * @return current mode | |
736 | */ | |
737 | int smscore_get_device_mode(smscore_device_t *coredev) | |
738 | { | |
739 | return coredev->mode; | |
740 | } | |
741 | ||
742 | smscore_client_t* smscore_getclient_by_type(smscore_device_t *coredev, int data_type) | |
743 | { | |
744 | smscore_client_t *client = NULL; | |
745 | struct list_head *next, *first; | |
746 | unsigned long flags; | |
747 | ||
748 | if (!data_type) | |
749 | return NULL; | |
750 | ||
751 | spin_lock_irqsave(&coredev->clientslock, flags); | |
752 | ||
753 | first = &coredev->clients; | |
754 | ||
755 | for (next = first->next; next != first; next = next->next) | |
756 | { | |
757 | if (((smscore_client_t*) next)->data_type == data_type) | |
758 | { | |
759 | client = (smscore_client_t*) next; | |
760 | break; | |
761 | } | |
762 | } | |
763 | ||
764 | spin_unlock_irqrestore(&coredev->clientslock, flags); | |
765 | ||
766 | return client; | |
767 | } | |
768 | ||
769 | smscore_client_t* smscore_getclient_by_id(smscore_device_t *coredev, int id) | |
770 | { | |
771 | smscore_client_t *client = NULL; | |
772 | struct list_head *next, *first; | |
773 | unsigned long flags; | |
774 | ||
775 | spin_lock_irqsave(&coredev->clientslock, flags); | |
776 | ||
777 | first = &coredev->subclients; | |
778 | ||
779 | for (next = first->next; next != first; next = next->next) | |
780 | { | |
781 | if (((smscore_subclient_t*) next)->id == id) | |
782 | { | |
783 | client = ((smscore_subclient_t*) next)->client; | |
784 | break; | |
785 | } | |
786 | } | |
787 | ||
788 | spin_unlock_irqrestore(&coredev->clientslock, flags); | |
789 | ||
790 | return client; | |
791 | } | |
792 | ||
793 | /** | |
794 | * find client by response id/type, call clients onresponse handler | |
795 | * return buffer to pool on error | |
796 | * | |
797 | * @param coredev pointer to a coredev object returned by smscore_register_device | |
798 | * @param cb pointer to response buffer descriptor | |
799 | * | |
800 | */ | |
801 | void smscore_onresponse(smscore_device_t *coredev, smscore_buffer_t *cb) | |
802 | { | |
803 | SmsMsgHdr_ST *phdr = (SmsMsgHdr_ST *)((u8*) cb->p + cb->offset); | |
804 | smscore_client_t * client = smscore_getclient_by_type(coredev, phdr->msgType); | |
805 | int rc = -EBUSY; | |
806 | ||
807 | static unsigned long last_sample_time = 0; | |
808 | static int data_total = 0; | |
809 | unsigned long time_now = jiffies_to_msecs(jiffies); | |
810 | ||
811 | if (!last_sample_time) | |
812 | last_sample_time = time_now; | |
813 | ||
814 | if (time_now - last_sample_time > 10000) | |
815 | { | |
816 | printk("\n%s data rate %d bytes/secs\n", __func__, (int)((data_total * 1000) / (time_now - last_sample_time))); | |
817 | ||
818 | last_sample_time = time_now; | |
819 | data_total = 0; | |
820 | } | |
821 | ||
822 | data_total += cb->size; | |
823 | ||
824 | if (!client) | |
825 | client = smscore_getclient_by_id(coredev, phdr->msgDstId); | |
826 | ||
827 | if (client) | |
828 | rc = client->onresponse_handler(client->context, cb); | |
829 | ||
830 | if (rc < 0) | |
831 | { | |
832 | switch (phdr->msgType) | |
833 | { | |
834 | case MSG_SMS_GET_VERSION_EX_RES: | |
835 | { | |
836 | SmsVersionRes_ST *ver = (SmsVersionRes_ST*) phdr; | |
837 | printk("%s: MSG_SMS_GET_VERSION_EX_RES id %d prots 0x%x ver %d.%d\n", __FUNCTION__, ver->FirmwareId, ver->SupportedProtocols, ver->RomVersionMajor, ver->RomVersionMinor); | |
838 | ||
839 | coredev->mode = ver->FirmwareId == 255 ? DEVICE_MODE_NONE : ver->FirmwareId; | |
840 | coredev->modes_supported = ver->SupportedProtocols; | |
841 | ||
842 | complete(&coredev->version_ex_done); | |
843 | break; | |
844 | } | |
845 | ||
846 | case MSG_SMS_INIT_DEVICE_RES: | |
847 | printk("%s: MSG_SMS_INIT_DEVICE_RES\n", __FUNCTION__); | |
848 | complete(&coredev->init_device_done); | |
849 | break; | |
850 | ||
851 | case MSG_SW_RELOAD_START_RES: | |
852 | printk("%s: MSG_SW_RELOAD_START_RES\n", __FUNCTION__); | |
853 | complete(&coredev->reload_start_done); | |
854 | break; | |
855 | ||
856 | case MSG_SMS_DATA_DOWNLOAD_RES: | |
857 | complete(&coredev->data_download_done); | |
858 | break; | |
859 | ||
860 | case MSG_SW_RELOAD_EXEC_RES: | |
861 | printk("%s: MSG_SW_RELOAD_EXEC_RES\n", __FUNCTION__); | |
862 | break; | |
863 | ||
864 | case MSG_SMS_SWDOWNLOAD_TRIGGER_RES: | |
865 | printk("%s: MSG_SMS_SWDOWNLOAD_TRIGGER_RES\n", __FUNCTION__); | |
866 | complete(&coredev->trigger_done); | |
867 | break; | |
868 | ||
869 | case MSG_SMS_SLEEP_RESUME_COMP_IND: | |
870 | complete(&coredev->resume_done); | |
871 | break; | |
872 | ||
873 | default: | |
874 | printk(KERN_INFO "%s no client (%p) or error (%d), type:%d dstid:%d\n", __FUNCTION__, client, rc, phdr->msgType, phdr->msgDstId); | |
875 | } | |
876 | ||
877 | smscore_putbuffer(coredev, cb); | |
878 | } | |
879 | } | |
880 | ||
881 | /** | |
882 | * return pointer to next free buffer descriptor from core pool | |
883 | * | |
884 | * @param coredev pointer to a coredev object returned by smscore_register_device | |
885 | * | |
886 | * @return pointer to descriptor on success, NULL on error. | |
887 | */ | |
888 | smscore_buffer_t *smscore_getbuffer(smscore_device_t *coredev) | |
889 | { | |
890 | smscore_buffer_t *cb = NULL; | |
891 | unsigned long flags; | |
892 | ||
893 | spin_lock_irqsave(&coredev->bufferslock, flags); | |
894 | ||
895 | if (!list_empty(&coredev->buffers)) | |
896 | { | |
897 | cb = (smscore_buffer_t *) coredev->buffers.next; | |
898 | list_del(&cb->entry); | |
899 | } | |
900 | ||
901 | spin_unlock_irqrestore(&coredev->bufferslock, flags); | |
902 | ||
903 | return cb; | |
904 | } | |
905 | ||
906 | /** | |
907 | * return buffer descriptor to a pool | |
908 | * | |
909 | * @param coredev pointer to a coredev object returned by smscore_register_device | |
910 | * @param cb pointer buffer descriptor | |
911 | * | |
912 | */ | |
913 | void smscore_putbuffer(smscore_device_t *coredev, smscore_buffer_t *cb) | |
914 | { | |
915 | list_add_locked(&cb->entry, &coredev->buffers, &coredev->bufferslock); | |
916 | } | |
917 | ||
918 | int smscore_validate_client(smscore_device_t *coredev, smscore_client_t *client, int id) | |
919 | { | |
920 | smscore_client_t *existing_client; | |
921 | smscore_subclient_t *subclient; | |
922 | ||
923 | if (!id) | |
924 | return 0; | |
925 | ||
926 | existing_client = smscore_getclient_by_id(coredev, id); | |
927 | if (existing_client == client) | |
928 | return 0; | |
929 | ||
930 | if (existing_client) | |
931 | return -EBUSY; | |
932 | ||
933 | subclient = kzalloc(sizeof(smscore_subclient_t), GFP_KERNEL); | |
934 | if (!subclient) | |
935 | return -ENOMEM; | |
936 | ||
937 | subclient->client = client; | |
938 | subclient->id = id; | |
939 | ||
940 | list_add_locked(&subclient->entry, &coredev->subclients, &coredev->clientslock); | |
941 | ||
942 | return 0; | |
943 | } | |
944 | ||
945 | /** | |
946 | * creates smsclient object, check that id is taken by another client | |
947 | * | |
948 | * @param coredev pointer to a coredev object from clients hotplug | |
949 | * @param initial_id all messages with this id would be sent to this client | |
950 | * @param data_type all messages of this type would be sent to this client | |
951 | * @param onresponse_handler client handler that is called to process incoming messages | |
952 | * @param onremove_handler client handler that is called when device is removed | |
953 | * @param context client-specific context | |
954 | * @param client pointer to a value that receives created smsclient object | |
955 | * | |
956 | * @return 0 on success, <0 on error. | |
957 | */ | |
958 | int smscore_register_client(smscore_device_t *coredev, smsclient_params_t *params, smscore_client_t **client) | |
959 | { | |
960 | smscore_client_t* newclient; | |
961 | int rc; | |
962 | ||
963 | // check that no other channel with same data type exists | |
964 | if (params->data_type && smscore_getclient_by_type(coredev, params->data_type)) | |
965 | return -EEXIST; | |
966 | ||
967 | newclient = kzalloc(sizeof(smscore_client_t), GFP_KERNEL); | |
968 | if (!newclient) | |
969 | return -ENOMEM; | |
970 | ||
971 | // check that no other channel with same id exists | |
972 | rc = smscore_validate_client(coredev, newclient, params->initial_id); | |
973 | if (rc < 0) | |
974 | { | |
975 | kfree(newclient); | |
976 | return rc; | |
977 | } | |
978 | ||
979 | newclient->coredev = coredev; | |
980 | newclient->data_type = params->data_type; | |
981 | newclient->onresponse_handler = params->onresponse_handler; | |
982 | newclient->onremove_handler = params->onremove_handler; | |
983 | newclient->context = params->context; | |
984 | ||
985 | list_add_locked(&newclient->entry, &coredev->clients, &coredev->clientslock); | |
986 | ||
987 | *client = newclient; | |
988 | ||
989 | printk(KERN_INFO "%s %p %d %d\n", __FUNCTION__, params->context, params->data_type, params->initial_id); | |
990 | ||
991 | return 0; | |
992 | } | |
993 | ||
994 | /** | |
995 | * frees smsclient object and all subclients associated with it | |
996 | * | |
997 | * @param client pointer to smsclient object returned by smscore_register_client | |
998 | * | |
999 | */ | |
1000 | void smscore_unregister_client(smscore_client_t *client) | |
1001 | { | |
1002 | smscore_device_t *coredev = client->coredev; | |
1003 | struct list_head *next, *first; | |
1004 | unsigned long flags; | |
1005 | ||
1006 | spin_lock_irqsave(&coredev->clientslock, flags); | |
1007 | ||
1008 | first = &coredev->subclients; | |
1009 | ||
1010 | for (next = first->next; next != first;) | |
1011 | { | |
1012 | smscore_subclient_t *subclient = (smscore_subclient_t *) next; | |
1013 | next = next->next; | |
1014 | ||
1015 | if (subclient->client == client) | |
1016 | { | |
1017 | list_del(&subclient->entry); | |
1018 | kfree(subclient); | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | printk(KERN_INFO "%s %p %d\n", __FUNCTION__, client->context, client->data_type); | |
1023 | ||
1024 | list_del(&client->entry); | |
1025 | kfree(client); | |
1026 | ||
1027 | spin_unlock_irqrestore(&coredev->clientslock, flags); | |
1028 | } | |
1029 | ||
1030 | /** | |
1031 | * verifies that source id is not taken by another client, | |
1032 | * calls device handler to send requests to the device | |
1033 | * | |
1034 | * @param client pointer to smsclient object returned by smscore_register_client | |
1035 | * @param buffer pointer to a request buffer | |
1036 | * @param size size (in bytes) of request buffer | |
1037 | * | |
1038 | * @return 0 on success, <0 on error. | |
1039 | */ | |
1040 | int smsclient_sendrequest(smscore_client_t *client, void *buffer, size_t size) | |
1041 | { | |
1042 | smscore_device_t* coredev = client->coredev; | |
1043 | SmsMsgHdr_ST* phdr = (SmsMsgHdr_ST*) buffer; | |
1044 | ||
1045 | // check that no other channel with same id exists | |
1046 | int rc = smscore_validate_client(client->coredev, client, phdr->msgSrcId); | |
1047 | if (rc < 0) | |
1048 | return rc; | |
1049 | ||
1050 | return coredev->sendrequest_handler(coredev->context, buffer, size); | |
1051 | } | |
1052 | ||
1053 | /** | |
1054 | * return the size of large (common) buffer | |
1055 | * | |
1056 | * @param coredev pointer to a coredev object from clients hotplug | |
1057 | * | |
1058 | * @return size (in bytes) of the buffer | |
1059 | */ | |
1060 | int smscore_get_common_buffer_size(smscore_device_t *coredev) | |
1061 | { | |
1062 | return coredev->common_buffer_size; | |
1063 | } | |
1064 | ||
1065 | /** | |
1066 | * maps common buffer (if supported by platform) | |
1067 | * | |
1068 | * @param coredev pointer to a coredev object from clients hotplug | |
1069 | * @param vma pointer to vma struct from mmap handler | |
1070 | * | |
1071 | * @return 0 on success, <0 on error. | |
1072 | */ | |
1073 | int smscore_map_common_buffer(smscore_device_t *coredev, struct vm_area_struct * vma) | |
1074 | { | |
1075 | unsigned long end = vma->vm_end, start = vma->vm_start, size = PAGE_ALIGN(coredev->common_buffer_size); | |
1076 | ||
1077 | if (!(vma->vm_flags & (VM_READ | VM_SHARED)) || (vma->vm_flags & VM_WRITE)) | |
1078 | { | |
1079 | printk(KERN_INFO "%s invalid vm flags\n", __FUNCTION__); | |
1080 | return -EINVAL; | |
1081 | } | |
1082 | ||
1083 | if ((end - start) != size) | |
1084 | { | |
1085 | printk(KERN_INFO "%s invalid size %d expected %d\n", __FUNCTION__, (int)(end - start), (int) size); | |
1086 | return -EINVAL; | |
1087 | } | |
1088 | ||
1089 | if (remap_pfn_range(vma, start, coredev->common_buffer_phys >> PAGE_SHIFT, size, pgprot_noncached(vma->vm_page_prot))) | |
1090 | { | |
1091 | printk(KERN_INFO "%s remap_page_range failed\n", __FUNCTION__); | |
1092 | return -EAGAIN; | |
1093 | } | |
1094 | ||
1095 | return 0; | |
1096 | } | |
1097 | ||
1098 | int smscore_module_init(void) | |
1099 | { | |
c6465799 | 1100 | int rc = 0; |
2e5c1ec8 MK |
1101 | |
1102 | INIT_LIST_HEAD(&g_smscore_notifyees); | |
1103 | INIT_LIST_HEAD(&g_smscore_devices); | |
1104 | kmutex_init(&g_smscore_deviceslock); | |
1105 | ||
1106 | INIT_LIST_HEAD(&g_smscore_registry); | |
1107 | kmutex_init(&g_smscore_registrylock); | |
1108 | ||
eae55660 ST |
1109 | /* USB Register */ |
1110 | rc = smsusb_register(); | |
1111 | ||
1112 | /* DVB Register */ | |
1113 | rc = smsdvb_register(); | |
1114 | ||
2e5c1ec8 MK |
1115 | printk(KERN_INFO "%s, rc %d\n", __FUNCTION__, rc); |
1116 | ||
1117 | return rc; | |
1118 | } | |
1119 | ||
1120 | void smscore_module_exit(void) | |
1121 | { | |
eae55660 | 1122 | |
2e5c1ec8 MK |
1123 | kmutex_lock(&g_smscore_deviceslock); |
1124 | while (!list_empty(&g_smscore_notifyees)) | |
1125 | { | |
1126 | smscore_device_notifyee_t *notifyee = (smscore_device_notifyee_t *) g_smscore_notifyees.next; | |
1127 | ||
1128 | list_del(¬ifyee->entry); | |
1129 | kfree(notifyee); | |
1130 | } | |
1131 | kmutex_unlock(&g_smscore_deviceslock); | |
1132 | ||
1133 | kmutex_lock(&g_smscore_registrylock); | |
1134 | while (!list_empty(&g_smscore_registry)) | |
1135 | { | |
1136 | smscore_registry_entry_t *entry = (smscore_registry_entry_t *) g_smscore_registry.next; | |
1137 | ||
1138 | list_del(&entry->entry); | |
1139 | kfree(entry); | |
1140 | } | |
1141 | kmutex_unlock(&g_smscore_registrylock); | |
1142 | ||
eae55660 ST |
1143 | /* DVB UnRegister */ |
1144 | smsdvb_unregister(); | |
1145 | ||
1146 | /* Unregister USB */ | |
1147 | smsusb_unregister(); | |
1148 | ||
2e5c1ec8 MK |
1149 | printk(KERN_INFO "%s\n", __FUNCTION__); |
1150 | } | |
1151 | ||
1152 | module_init(smscore_module_init); | |
1153 | module_exit(smscore_module_exit); | |
1154 | ||
1155 | MODULE_DESCRIPTION("smscore"); | |
1156 | MODULE_AUTHOR("Anatoly Greenblatt,,, (anatolyg@siano-ms.com)"); | |
1157 | MODULE_LICENSE("GPL"); | |
1158 |