1 /* 2 * Copyright (c) 2010 Broadcom Corporation 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/kernel.h> 18 #include <linux/string.h> 19 #include <linux/netdevice.h> 20 #include <linux/module.h> 21 #include <linux/firmware.h> 22 #include <brcmu_wifi.h> 23 #include <brcmu_utils.h> 24 #include "core.h" 25 #include "bus.h" 26 #include "debug.h" 27 #include "fwil.h" 28 #include "fwil_types.h" 29 #include "tracepoint.h" 30 #include "common.h" 31 #include "of.h" 32 #include "firmware.h" 33 34 MODULE_AUTHOR("Broadcom Corporation"); 35 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver."); 36 MODULE_LICENSE("Dual BSD/GPL"); 37 38 const u8 ALLFFMAC[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 39 40 #define BRCMF_DEFAULT_SCAN_CHANNEL_TIME 40 41 #define BRCMF_DEFAULT_SCAN_UNASSOC_TIME 40 42 43 /* default boost value for RSSI_DELTA in preferred join selection */ 44 #define BRCMF_JOIN_PREF_RSSI_BOOST 8 45 46 #define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */ 47 48 static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE; 49 module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0); 50 MODULE_PARM_DESC(txglomsz, "Maximum tx packet chain size [SDIO]"); 51 52 /* Debug level configuration. See debug.h for bits, sysfs modifiable */ 53 int brcmf_msg_level; 54 module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR); 55 MODULE_PARM_DESC(debug, "Level of debug output"); 56 57 static int brcmf_p2p_enable; 58 module_param_named(p2pon, brcmf_p2p_enable, int, 0); 59 MODULE_PARM_DESC(p2pon, "Enable legacy p2p management functionality"); 60 61 static int brcmf_feature_disable; 62 module_param_named(feature_disable, brcmf_feature_disable, int, 0); 63 MODULE_PARM_DESC(feature_disable, "Disable features"); 64 65 static char brcmf_firmware_path[BRCMF_FW_ALTPATH_LEN]; 66 module_param_string(alternative_fw_path, brcmf_firmware_path, 67 BRCMF_FW_ALTPATH_LEN, S_IRUSR); 68 MODULE_PARM_DESC(alternative_fw_path, "Alternative firmware path"); 69 70 static int brcmf_fcmode; 71 module_param_named(fcmode, brcmf_fcmode, int, 0); 72 MODULE_PARM_DESC(fcmode, "Mode of firmware signalled flow control"); 73 74 static int brcmf_roamoff; 75 module_param_named(roamoff, brcmf_roamoff, int, S_IRUSR); 76 MODULE_PARM_DESC(roamoff, "Do not use internal roaming engine"); 77 78 #ifdef DEBUG 79 /* always succeed brcmf_bus_started() */ 80 static int brcmf_ignore_probe_fail; 81 module_param_named(ignore_probe_fail, brcmf_ignore_probe_fail, int, 0); 82 MODULE_PARM_DESC(ignore_probe_fail, "always succeed probe for debugging"); 83 #endif 84 85 static struct brcmfmac_platform_data *brcmfmac_pdata; 86 struct brcmf_mp_global_t brcmf_mp_global; 87 88 void brcmf_c_set_joinpref_default(struct brcmf_if *ifp) 89 { 90 struct brcmf_join_pref_params join_pref_params[2]; 91 int err; 92 93 /* Setup join_pref to select target by RSSI (boost on 5GHz) */ 94 join_pref_params[0].type = BRCMF_JOIN_PREF_RSSI_DELTA; 95 join_pref_params[0].len = 2; 96 join_pref_params[0].rssi_gain = BRCMF_JOIN_PREF_RSSI_BOOST; 97 join_pref_params[0].band = WLC_BAND_5G; 98 99 join_pref_params[1].type = BRCMF_JOIN_PREF_RSSI; 100 join_pref_params[1].len = 2; 101 join_pref_params[1].rssi_gain = 0; 102 join_pref_params[1].band = 0; 103 err = brcmf_fil_iovar_data_set(ifp, "join_pref", join_pref_params, 104 sizeof(join_pref_params)); 105 if (err) 106 brcmf_err("Set join_pref error (%d)\n", err); 107 } 108 109 static int brcmf_c_download(struct brcmf_if *ifp, u16 flag, 110 struct brcmf_dload_data_le *dload_buf, 111 u32 len) 112 { 113 s32 err; 114 115 flag |= (DLOAD_HANDLER_VER << DLOAD_FLAG_VER_SHIFT); 116 dload_buf->flag = cpu_to_le16(flag); 117 dload_buf->dload_type = cpu_to_le16(DL_TYPE_CLM); 118 dload_buf->len = cpu_to_le32(len); 119 dload_buf->crc = cpu_to_le32(0); 120 len = sizeof(*dload_buf) + len - 1; 121 122 err = brcmf_fil_iovar_data_set(ifp, "clmload", dload_buf, len); 123 124 return err; 125 } 126 127 static int brcmf_c_get_clm_name(struct brcmf_if *ifp, u8 *clm_name) 128 { 129 struct brcmf_bus *bus = ifp->drvr->bus_if; 130 struct brcmf_rev_info *ri = &ifp->drvr->revinfo; 131 u8 fw_name[BRCMF_FW_NAME_LEN]; 132 u8 *ptr; 133 size_t len; 134 s32 err; 135 136 memset(fw_name, 0, BRCMF_FW_NAME_LEN); 137 err = brcmf_bus_get_fwname(bus, ri->chipnum, ri->chiprev, fw_name); 138 if (err) { 139 brcmf_err("get firmware name failed (%d)\n", err); 140 goto done; 141 } 142 143 /* generate CLM blob file name */ 144 ptr = strrchr(fw_name, '.'); 145 if (!ptr) { 146 err = -ENOENT; 147 goto done; 148 } 149 150 len = ptr - fw_name + 1; 151 if (len + strlen(".clm_blob") > BRCMF_FW_NAME_LEN) { 152 err = -E2BIG; 153 } else { 154 strlcpy(clm_name, fw_name, len); 155 strlcat(clm_name, ".clm_blob", BRCMF_FW_NAME_LEN); 156 } 157 done: 158 return err; 159 } 160 161 static int brcmf_c_process_clm_blob(struct brcmf_if *ifp) 162 { 163 struct device *dev = ifp->drvr->bus_if->dev; 164 struct brcmf_dload_data_le *chunk_buf; 165 const struct firmware *clm = NULL; 166 u8 clm_name[BRCMF_FW_NAME_LEN]; 167 u32 chunk_len; 168 u32 datalen; 169 u32 cumulative_len; 170 u16 dl_flag = DL_BEGIN; 171 u32 status; 172 s32 err; 173 174 brcmf_dbg(TRACE, "Enter\n"); 175 176 memset(clm_name, 0, BRCMF_FW_NAME_LEN); 177 err = brcmf_c_get_clm_name(ifp, clm_name); 178 if (err) { 179 brcmf_err("get CLM blob file name failed (%d)\n", err); 180 return err; 181 } 182 183 err = request_firmware(&clm, clm_name, dev); 184 if (err) { 185 if (err == -ENOENT) { 186 brcmf_dbg(INFO, "continue with CLM data currently present in firmware\n"); 187 return 0; 188 } 189 brcmf_err("request CLM blob file failed (%d)\n", err); 190 return err; 191 } 192 193 chunk_buf = kzalloc(sizeof(*chunk_buf) + MAX_CHUNK_LEN - 1, GFP_KERNEL); 194 if (!chunk_buf) { 195 err = -ENOMEM; 196 goto done; 197 } 198 199 datalen = clm->size; 200 cumulative_len = 0; 201 do { 202 if (datalen > MAX_CHUNK_LEN) { 203 chunk_len = MAX_CHUNK_LEN; 204 } else { 205 chunk_len = datalen; 206 dl_flag |= DL_END; 207 } 208 memcpy(chunk_buf->data, clm->data + cumulative_len, chunk_len); 209 210 err = brcmf_c_download(ifp, dl_flag, chunk_buf, chunk_len); 211 212 dl_flag &= ~DL_BEGIN; 213 214 cumulative_len += chunk_len; 215 datalen -= chunk_len; 216 } while ((datalen > 0) && (err == 0)); 217 218 if (err) { 219 brcmf_err("clmload (%zu byte file) failed (%d); ", 220 clm->size, err); 221 /* Retrieve clmload_status and print */ 222 err = brcmf_fil_iovar_int_get(ifp, "clmload_status", &status); 223 if (err) 224 brcmf_err("get clmload_status failed (%d)\n", err); 225 else 226 brcmf_dbg(INFO, "clmload_status=%d\n", status); 227 err = -EIO; 228 } 229 230 kfree(chunk_buf); 231 done: 232 release_firmware(clm); 233 return err; 234 } 235 236 int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) 237 { 238 s8 eventmask[BRCMF_EVENTING_MASK_LEN]; 239 u8 buf[BRCMF_DCMD_SMLEN]; 240 struct brcmf_rev_info_le revinfo; 241 struct brcmf_rev_info *ri; 242 char *clmver; 243 char *ptr; 244 s32 err; 245 246 /* retreive mac address */ 247 err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr, 248 sizeof(ifp->mac_addr)); 249 if (err < 0) { 250 brcmf_err("Retreiving cur_etheraddr failed, %d\n", err); 251 goto done; 252 } 253 memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac)); 254 255 err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_REVINFO, 256 &revinfo, sizeof(revinfo)); 257 ri = &ifp->drvr->revinfo; 258 if (err < 0) { 259 brcmf_err("retrieving revision info failed, %d\n", err); 260 } else { 261 ri->vendorid = le32_to_cpu(revinfo.vendorid); 262 ri->deviceid = le32_to_cpu(revinfo.deviceid); 263 ri->radiorev = le32_to_cpu(revinfo.radiorev); 264 ri->chiprev = le32_to_cpu(revinfo.chiprev); 265 ri->corerev = le32_to_cpu(revinfo.corerev); 266 ri->boardid = le32_to_cpu(revinfo.boardid); 267 ri->boardvendor = le32_to_cpu(revinfo.boardvendor); 268 ri->boardrev = le32_to_cpu(revinfo.boardrev); 269 ri->driverrev = le32_to_cpu(revinfo.driverrev); 270 ri->ucoderev = le32_to_cpu(revinfo.ucoderev); 271 ri->bus = le32_to_cpu(revinfo.bus); 272 ri->chipnum = le32_to_cpu(revinfo.chipnum); 273 ri->phytype = le32_to_cpu(revinfo.phytype); 274 ri->phyrev = le32_to_cpu(revinfo.phyrev); 275 ri->anarev = le32_to_cpu(revinfo.anarev); 276 ri->chippkg = le32_to_cpu(revinfo.chippkg); 277 ri->nvramrev = le32_to_cpu(revinfo.nvramrev); 278 } 279 ri->result = err; 280 281 /* Do any CLM downloading */ 282 err = brcmf_c_process_clm_blob(ifp); 283 if (err < 0) { 284 brcmf_err("download CLM blob file failed, %d\n", err); 285 goto done; 286 } 287 288 /* query for 'ver' to get version info from firmware */ 289 memset(buf, 0, sizeof(buf)); 290 strcpy(buf, "ver"); 291 err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf)); 292 if (err < 0) { 293 brcmf_err("Retreiving version information failed, %d\n", 294 err); 295 goto done; 296 } 297 ptr = (char *)buf; 298 strsep(&ptr, "\n"); 299 300 /* Print fw version info */ 301 brcmf_info("Firmware version = %s\n", buf); 302 303 /* locate firmware version number for ethtool */ 304 ptr = strrchr(buf, ' ') + 1; 305 strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver)); 306 307 /* Query for 'clmver' to get CLM version info from firmware */ 308 memset(buf, 0, sizeof(buf)); 309 err = brcmf_fil_iovar_data_get(ifp, "clmver", buf, sizeof(buf)); 310 if (err) { 311 brcmf_dbg(TRACE, "retrieving clmver failed, %d\n", err); 312 } else { 313 clmver = (char *)buf; 314 /* store CLM version for adding it to revinfo debugfs file */ 315 memcpy(ifp->drvr->clmver, clmver, sizeof(ifp->drvr->clmver)); 316 317 /* Replace all newline/linefeed characters with space 318 * character 319 */ 320 ptr = clmver; 321 while ((ptr = strnchr(ptr, '\n', sizeof(buf))) != NULL) 322 *ptr = ' '; 323 324 brcmf_dbg(INFO, "CLM version = %s\n", clmver); 325 } 326 327 /* set mpc */ 328 err = brcmf_fil_iovar_int_set(ifp, "mpc", 1); 329 if (err) { 330 brcmf_err("failed setting mpc\n"); 331 goto done; 332 } 333 334 brcmf_c_set_joinpref_default(ifp); 335 336 /* Setup event_msgs, enable E_IF */ 337 err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask, 338 BRCMF_EVENTING_MASK_LEN); 339 if (err) { 340 brcmf_err("Get event_msgs error (%d)\n", err); 341 goto done; 342 } 343 setbit(eventmask, BRCMF_E_IF); 344 err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask, 345 BRCMF_EVENTING_MASK_LEN); 346 if (err) { 347 brcmf_err("Set event_msgs error (%d)\n", err); 348 goto done; 349 } 350 351 /* Setup default scan channel time */ 352 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME, 353 BRCMF_DEFAULT_SCAN_CHANNEL_TIME); 354 if (err) { 355 brcmf_err("BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n", 356 err); 357 goto done; 358 } 359 360 /* Setup default scan unassoc time */ 361 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME, 362 BRCMF_DEFAULT_SCAN_UNASSOC_TIME); 363 if (err) { 364 brcmf_err("BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n", 365 err); 366 goto done; 367 } 368 369 /* Enable tx beamforming, errors can be ignored (not supported) */ 370 (void)brcmf_fil_iovar_int_set(ifp, "txbf", 1); 371 372 /* do bus specific preinit here */ 373 err = brcmf_bus_preinit(ifp->drvr->bus_if); 374 done: 375 return err; 376 } 377 378 #ifndef CONFIG_BRCM_TRACING 379 void __brcmf_err(const char *func, const char *fmt, ...) 380 { 381 struct va_format vaf; 382 va_list args; 383 384 va_start(args, fmt); 385 386 vaf.fmt = fmt; 387 vaf.va = &args; 388 pr_err("%s: %pV", func, &vaf); 389 390 va_end(args); 391 } 392 #endif 393 394 #if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG) 395 void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...) 396 { 397 struct va_format vaf = { 398 .fmt = fmt, 399 }; 400 va_list args; 401 402 va_start(args, fmt); 403 vaf.va = &args; 404 if (brcmf_msg_level & level) 405 pr_debug("%s %pV", func, &vaf); 406 trace_brcmf_dbg(level, func, &vaf); 407 va_end(args); 408 } 409 #endif 410 411 static void brcmf_mp_attach(void) 412 { 413 /* If module param firmware path is set then this will always be used, 414 * if not set then if available use the platform data version. To make 415 * sure it gets initialized at all, always copy the module param version 416 */ 417 strlcpy(brcmf_mp_global.firmware_path, brcmf_firmware_path, 418 BRCMF_FW_ALTPATH_LEN); 419 if ((brcmfmac_pdata) && (brcmfmac_pdata->fw_alternative_path) && 420 (brcmf_mp_global.firmware_path[0] == '\0')) { 421 strlcpy(brcmf_mp_global.firmware_path, 422 brcmfmac_pdata->fw_alternative_path, 423 BRCMF_FW_ALTPATH_LEN); 424 } 425 } 426 427 struct brcmf_mp_device *brcmf_get_module_param(struct device *dev, 428 enum brcmf_bus_type bus_type, 429 u32 chip, u32 chiprev) 430 { 431 struct brcmf_mp_device *settings; 432 struct brcmfmac_pd_device *device_pd; 433 bool found; 434 int i; 435 436 brcmf_dbg(INFO, "Enter, bus=%d, chip=%d, rev=%d\n", bus_type, chip, 437 chiprev); 438 settings = kzalloc(sizeof(*settings), GFP_ATOMIC); 439 if (!settings) 440 return NULL; 441 442 /* start by using the module paramaters */ 443 settings->p2p_enable = !!brcmf_p2p_enable; 444 settings->feature_disable = brcmf_feature_disable; 445 settings->fcmode = brcmf_fcmode; 446 settings->roamoff = !!brcmf_roamoff; 447 #ifdef DEBUG 448 settings->ignore_probe_fail = !!brcmf_ignore_probe_fail; 449 #endif 450 451 if (bus_type == BRCMF_BUSTYPE_SDIO) 452 settings->bus.sdio.txglomsz = brcmf_sdiod_txglomsz; 453 454 /* See if there is any device specific platform data configured */ 455 found = false; 456 if (brcmfmac_pdata) { 457 for (i = 0; i < brcmfmac_pdata->device_count; i++) { 458 device_pd = &brcmfmac_pdata->devices[i]; 459 if ((device_pd->bus_type == bus_type) && 460 (device_pd->id == chip) && 461 ((device_pd->rev == chiprev) || 462 (device_pd->rev == -1))) { 463 brcmf_dbg(INFO, "Platform data for device found\n"); 464 settings->country_codes = 465 device_pd->country_codes; 466 if (device_pd->bus_type == BRCMF_BUSTYPE_SDIO) 467 memcpy(&settings->bus.sdio, 468 &device_pd->bus.sdio, 469 sizeof(settings->bus.sdio)); 470 found = true; 471 break; 472 } 473 } 474 } 475 if (!found) { 476 /* No platform data for this device, try OF (Open Firwmare) */ 477 brcmf_of_probe(dev, bus_type, settings); 478 } 479 return settings; 480 } 481 482 void brcmf_release_module_param(struct brcmf_mp_device *module_param) 483 { 484 kfree(module_param); 485 } 486 487 static int __init brcmf_common_pd_probe(struct platform_device *pdev) 488 { 489 brcmf_dbg(INFO, "Enter\n"); 490 491 brcmfmac_pdata = dev_get_platdata(&pdev->dev); 492 493 if (brcmfmac_pdata->power_on) 494 brcmfmac_pdata->power_on(); 495 496 return 0; 497 } 498 499 static int brcmf_common_pd_remove(struct platform_device *pdev) 500 { 501 brcmf_dbg(INFO, "Enter\n"); 502 503 if (brcmfmac_pdata->power_off) 504 brcmfmac_pdata->power_off(); 505 506 return 0; 507 } 508 509 static struct platform_driver brcmf_pd = { 510 .remove = brcmf_common_pd_remove, 511 .driver = { 512 .name = BRCMFMAC_PDATA_NAME, 513 } 514 }; 515 516 static int __init brcmfmac_module_init(void) 517 { 518 int err; 519 520 /* Initialize debug system first */ 521 brcmf_debugfs_init(); 522 523 /* Get the platform data (if available) for our devices */ 524 err = platform_driver_probe(&brcmf_pd, brcmf_common_pd_probe); 525 if (err == -ENODEV) 526 brcmf_dbg(INFO, "No platform data available.\n"); 527 528 /* Initialize global module paramaters */ 529 brcmf_mp_attach(); 530 531 /* Continue the initialization by registering the different busses */ 532 err = brcmf_core_init(); 533 if (err) { 534 brcmf_debugfs_exit(); 535 if (brcmfmac_pdata) 536 platform_driver_unregister(&brcmf_pd); 537 } 538 539 return err; 540 } 541 542 static void __exit brcmfmac_module_exit(void) 543 { 544 brcmf_core_exit(); 545 if (brcmfmac_pdata) 546 platform_driver_unregister(&brcmf_pd); 547 brcmf_debugfs_exit(); 548 } 549 550 module_init(brcmfmac_module_init); 551 module_exit(brcmfmac_module_exit); 552 553