Steven Toth | 8d4f9d0 | 2008-05-22 18:05:26 -0300 | [diff] [blame] | 1 | /* |
Michael Krufky | 8544706 | 2008-05-22 18:29:20 -0300 | [diff] [blame] | 2 | * Siano core API module |
Steven Toth | 8d4f9d0 | 2008-05-22 18:05:26 -0300 | [diff] [blame] | 3 | * |
Michael Krufky | 8544706 | 2008-05-22 18:29:20 -0300 | [diff] [blame] | 4 | * This file contains implementation for the interface to sms core component |
| 5 | * |
| 6 | * author: Anatoly Greenblat |
| 7 | * |
| 8 | * Copyright (c), 2005-2008 Siano Mobile Silicon, Inc. |
Steven Toth | 8d4f9d0 | 2008-05-22 18:05:26 -0300 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
Michael Krufky | 8544706 | 2008-05-22 18:29:20 -0300 | [diff] [blame] | 11 | * it under the terms of the GNU General Public License version 3 as |
| 12 | * published by the Free Software Foundation; |
Steven Toth | 8d4f9d0 | 2008-05-22 18:05:26 -0300 | [diff] [blame] | 13 | * |
Michael Krufky | 8544706 | 2008-05-22 18:29:20 -0300 | [diff] [blame] | 14 | * Software distributed under the License is distributed on an "AS IS" |
| 15 | * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. |
Steven Toth | 8d4f9d0 | 2008-05-22 18:05:26 -0300 | [diff] [blame] | 16 | * |
Michael Krufky | 8544706 | 2008-05-22 18:29:20 -0300 | [diff] [blame] | 17 | * See the GNU General Public License for more details. |
Steven Toth | 8d4f9d0 | 2008-05-22 18:05:26 -0300 | [diff] [blame] | 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 | |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 32 | #include <linux/firmware.h> |
| 33 | |
| 34 | #include "smscoreapi.h" |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 35 | |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 288 | printk(KERN_INFO "%s kmalloc(...) failed\n", __func__); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 316 | printk(KERN_INFO "%s kzalloc(...) failed\n", __func__); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 362 | printk(KERN_INFO "%s allocated %d buffers\n", __func__, dev->num_buffers); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 383 | printk(KERN_INFO "%s device %p created\n", __func__, dev); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 405 | printk(KERN_INFO "%s device %p started, rc %d\n", __func__, coredev, rc); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 529 | printk(KERN_INFO "%s failed to open \"%s\"\n", __func__, filename); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 546 | printk(KERN_INFO "%s failed to allocate firmware buffer\n", __func__); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 586 | printk(KERN_INFO "%s waiting for %d buffer(s)\n", __func__, coredev->num_buffers - num_buffers); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 587 | msleep(100); |
| 588 | } |
| 589 | |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 590 | printk(KERN_INFO "%s freed %d buffers\n", __func__, num_buffers); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 600 | printk(KERN_INFO "%s device %p destroyed\n", __func__, coredev); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 617 | printk("%s: MSG_SMS_GET_VERSION_EX_REQ failed first try\n", __func__); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 624 | printk("%s: MSG_SMS_GET_VERSION_EX_REQ failed second try, rc %d\n", __func__, rc); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 667 | printk(KERN_INFO "%s invalid mode specified %d\n", __func__, mode); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 680 | printk(KERN_INFO "%s device mode %d already set\n", __func__, mode); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 692 | printk(KERN_INFO "%s mode %d supported by running firmware\n", __func__, mode); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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; |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 837 | printk("%s: MSG_SMS_GET_VERSION_EX_RES id %d prots 0x%x ver %d.%d\n", __func__, ver->FirmwareId, ver->SupportedProtocols, ver->RomVersionMajor, ver->RomVersionMinor); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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: |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 847 | printk("%s: MSG_SMS_INIT_DEVICE_RES\n", __func__); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 848 | complete(&coredev->init_device_done); |
| 849 | break; |
| 850 | |
| 851 | case MSG_SW_RELOAD_START_RES: |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 852 | printk("%s: MSG_SW_RELOAD_START_RES\n", __func__); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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: |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 861 | printk("%s: MSG_SW_RELOAD_EXEC_RES\n", __func__); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 862 | break; |
| 863 | |
| 864 | case MSG_SMS_SWDOWNLOAD_TRIGGER_RES: |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 865 | printk("%s: MSG_SMS_SWDOWNLOAD_TRIGGER_RES\n", __func__); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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: |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 874 | printk(KERN_INFO "%s no client (%p) or error (%d), type:%d dstid:%d\n", __func__, client, rc, phdr->msgType, phdr->msgDstId); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 989 | printk(KERN_INFO "%s %p %d %d\n", __func__, params->context, params->data_type, params->initial_id); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 1022 | printk(KERN_INFO "%s %p %d\n", __func__, client->context, client->data_type); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 1079 | printk(KERN_INFO "%s invalid vm flags\n", __func__); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 1080 | return -EINVAL; |
| 1081 | } |
| 1082 | |
| 1083 | if ((end - start) != size) |
| 1084 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 1085 | printk(KERN_INFO "%s invalid size %d expected %d\n", __func__, (int)(end - start), (int) size); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | { |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 1091 | printk(KERN_INFO "%s remap_page_range failed\n", __func__); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 1092 | return -EAGAIN; |
| 1093 | } |
| 1094 | |
| 1095 | return 0; |
| 1096 | } |
| 1097 | |
| 1098 | int smscore_module_init(void) |
| 1099 | { |
Steven Toth | c646579 | 2008-05-19 19:09:21 -0300 | [diff] [blame] | 1100 | int rc = 0; |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | |
Steven Toth | eae5566 | 2008-05-22 18:04:36 -0300 | [diff] [blame] | 1109 | /* USB Register */ |
| 1110 | rc = smsusb_register(); |
| 1111 | |
| 1112 | /* DVB Register */ |
| 1113 | rc = smsdvb_register(); |
| 1114 | |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 1115 | printk(KERN_INFO "%s, rc %d\n", __func__, rc); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 1116 | |
| 1117 | return rc; |
| 1118 | } |
| 1119 | |
| 1120 | void smscore_module_exit(void) |
| 1121 | { |
Steven Toth | eae5566 | 2008-05-22 18:04:36 -0300 | [diff] [blame] | 1122 | |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | |
Steven Toth | eae5566 | 2008-05-22 18:04:36 -0300 | [diff] [blame] | 1143 | /* DVB UnRegister */ |
| 1144 | smsdvb_unregister(); |
| 1145 | |
| 1146 | /* Unregister USB */ |
| 1147 | smsusb_unregister(); |
| 1148 | |
Michael Krufky | 1865811 | 2008-05-22 18:30:17 -0300 | [diff] [blame^] | 1149 | printk(KERN_INFO "%s\n", __func__); |
Michael Krufky | 2e5c1ec8 | 2008-05-19 18:56:13 -0300 | [diff] [blame] | 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 | |