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 brcmf_info("no clm_blob available(err=%d), device may have limited channels available\n", 186 err); 187 return 0; 188 } 189 190 chunk_buf = kzalloc(sizeof(*chunk_buf) + MAX_CHUNK_LEN - 1, GFP_KERNEL); 191 if (!chunk_buf) { 192 err = -ENOMEM; 193 goto done; 194 } 195 196 datalen = clm->size; 197 cumulative_len = 0; 198 do { 199 if (datalen > MAX_CHUNK_LEN) { 200 chunk_len = MAX_CHUNK_LEN; 201 } else { 202 chunk_len = datalen; 203 dl_flag |= DL_END; 204 } 205 memcpy(chunk_buf->data, clm->data + cumulative_len, chunk_len); 206 207 err = brcmf_c_download(ifp, dl_flag, chunk_buf, chunk_len); 208 209 dl_flag &= ~DL_BEGIN; 210 211 cumulative_len += chunk_len; 212 datalen -= chunk_len; 213 } while ((datalen > 0) && (err == 0)); 214 215 if (err) { 216 brcmf_err("clmload (%zu byte file) failed (%d); ", 217 clm->size, err); 218 /* Retrieve clmload_status and print */ 219 err = brcmf_fil_iovar_int_get(ifp, "clmload_status", &status); 220 if (err) 221 brcmf_err("get clmload_status failed (%d)\n", err); 222 else 223 brcmf_dbg(INFO, "clmload_status=%d\n", status); 224 err = -EIO; 225 } 226 227 kfree(chunk_buf); 228 done: 229 release_firmware(clm); 230 return err; 231 } 232 233 int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) 234 { 235 s8 eventmask[BRCMF_EVENTING_MASK_LEN]; 236 u8 buf[BRCMF_DCMD_SMLEN]; 237 struct brcmf_rev_info_le revinfo; 238 struct brcmf_rev_info *ri; 239 char *clmver; 240 char *ptr; 241 s32 err; 242 243 /* retreive mac address */ 244 err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr, 245 sizeof(ifp->mac_addr)); 246 if (err < 0) { 247 brcmf_err("Retreiving cur_etheraddr failed, %d\n", err); 248 goto done; 249 } 250 memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac)); 251 252 err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_REVINFO, 253 &revinfo, sizeof(revinfo)); 254 ri = &ifp->drvr->revinfo; 255 if (err < 0) { 256 brcmf_err("retrieving revision info failed, %d\n", err); 257 } else { 258 ri->vendorid = le32_to_cpu(revinfo.vendorid); 259 ri->deviceid = le32_to_cpu(revinfo.deviceid); 260 ri->radiorev = le32_to_cpu(revinfo.radiorev); 261 ri->chiprev = le32_to_cpu(revinfo.chiprev); 262 ri->corerev = le32_to_cpu(revinfo.corerev); 263 ri->boardid = le32_to_cpu(revinfo.boardid); 264 ri->boardvendor = le32_to_cpu(revinfo.boardvendor); 265 ri->boardrev = le32_to_cpu(revinfo.boardrev); 266 ri->driverrev = le32_to_cpu(revinfo.driverrev); 267 ri->ucoderev = le32_to_cpu(revinfo.ucoderev); 268 ri->bus = le32_to_cpu(revinfo.bus); 269 ri->chipnum = le32_to_cpu(revinfo.chipnum); 270 ri->phytype = le32_to_cpu(revinfo.phytype); 271 ri->phyrev = le32_to_cpu(revinfo.phyrev); 272 ri->anarev = le32_to_cpu(revinfo.anarev); 273 ri->chippkg = le32_to_cpu(revinfo.chippkg); 274 ri->nvramrev = le32_to_cpu(revinfo.nvramrev); 275 } 276 ri->result = err; 277 278 /* Do any CLM downloading */ 279 err = brcmf_c_process_clm_blob(ifp); 280 if (err < 0) { 281 brcmf_err("download CLM blob file failed, %d\n", err); 282 goto done; 283 } 284 285 /* query for 'ver' to get version info from firmware */ 286 memset(buf, 0, sizeof(buf)); 287 strcpy(buf, "ver"); 288 err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf)); 289 if (err < 0) { 290 brcmf_err("Retreiving version information failed, %d\n", 291 err); 292 goto done; 293 } 294 ptr = (char *)buf; 295 strsep(&ptr, "\n"); 296 297 /* Print fw version info */ 298 brcmf_info("Firmware version = %s\n", buf); 299 300 /* locate firmware version number for ethtool */ 301 ptr = strrchr(buf, ' ') + 1; 302 strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver)); 303 304 /* Query for 'clmver' to get CLM version info from firmware */ 305 memset(buf, 0, sizeof(buf)); 306 err = brcmf_fil_iovar_data_get(ifp, "clmver", buf, sizeof(buf)); 307 if (err) { 308 brcmf_dbg(TRACE, "retrieving clmver failed, %d\n", err); 309 } else { 310 clmver = (char *)buf; 311 /* store CLM version for adding it to revinfo debugfs file */ 312 memcpy(ifp->drvr->clmver, clmver, sizeof(ifp->drvr->clmver)); 313 314 /* Replace all newline/linefeed characters with space 315 * character 316 */ 317 ptr = clmver; 318 while ((ptr = strnchr(ptr, '\n', sizeof(buf))) != NULL) 319 *ptr = ' '; 320 321 brcmf_dbg(INFO, "CLM version = %s\n", clmver); 322 } 323 324 /* set mpc */ 325 err = brcmf_fil_iovar_int_set(ifp, "mpc", 1); 326 if (err) { 327 brcmf_err("failed setting mpc\n"); 328 goto done; 329 } 330 331 brcmf_c_set_joinpref_default(ifp); 332 333 /* Setup event_msgs, enable E_IF */ 334 err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask, 335 BRCMF_EVENTING_MASK_LEN); 336 if (err) { 337 brcmf_err("Get event_msgs error (%d)\n", err); 338 goto done; 339 } 340 setbit(eventmask, BRCMF_E_IF); 341 err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask, 342 BRCMF_EVENTING_MASK_LEN); 343 if (err) { 344 brcmf_err("Set event_msgs error (%d)\n", err); 345 goto done; 346 } 347 348 /* Setup default scan channel time */ 349 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME, 350 BRCMF_DEFAULT_SCAN_CHANNEL_TIME); 351 if (err) { 352 brcmf_err("BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n", 353 err); 354 goto done; 355 } 356 357 /* Setup default scan unassoc time */ 358 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME, 359 BRCMF_DEFAULT_SCAN_UNASSOC_TIME); 360 if (err) { 361 brcmf_err("BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n", 362 err); 363 goto done; 364 } 365 366 /* Enable tx beamforming, errors can be ignored (not supported) */ 367 (void)brcmf_fil_iovar_int_set(ifp, "txbf", 1); 368 369 /* do bus specific preinit here */ 370 err = brcmf_bus_preinit(ifp->drvr->bus_if); 371 done: 372 return err; 373 } 374 375 #ifndef CONFIG_BRCM_TRACING 376 void __brcmf_err(const char *func, const char *fmt, ...) 377 { 378 struct va_format vaf; 379 va_list args; 380 381 va_start(args, fmt); 382 383 vaf.fmt = fmt; 384 vaf.va = &args; 385 pr_err("%s: %pV", func, &vaf); 386 387 va_end(args); 388 } 389 #endif 390 391 #if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG) 392 void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...) 393 { 394 struct va_format vaf = { 395 .fmt = fmt, 396 }; 397 va_list args; 398 399 va_start(args, fmt); 400 vaf.va = &args; 401 if (brcmf_msg_level & level) 402 pr_debug("%s %pV", func, &vaf); 403 trace_brcmf_dbg(level, func, &vaf); 404 va_end(args); 405 } 406 #endif 407 408 static void brcmf_mp_attach(void) 409 { 410 /* If module param firmware path is set then this will always be used, 411 * if not set then if available use the platform data version. To make 412 * sure it gets initialized at all, always copy the module param version 413 */ 414 strlcpy(brcmf_mp_global.firmware_path, brcmf_firmware_path, 415 BRCMF_FW_ALTPATH_LEN); 416 if ((brcmfmac_pdata) && (brcmfmac_pdata->fw_alternative_path) && 417 (brcmf_mp_global.firmware_path[0] == '\0')) { 418 strlcpy(brcmf_mp_global.firmware_path, 419 brcmfmac_pdata->fw_alternative_path, 420 BRCMF_FW_ALTPATH_LEN); 421 } 422 } 423 424 struct brcmf_mp_device *brcmf_get_module_param(struct device *dev, 425 enum brcmf_bus_type bus_type, 426 u32 chip, u32 chiprev) 427 { 428 struct brcmf_mp_device *settings; 429 struct brcmfmac_pd_device *device_pd; 430 bool found; 431 int i; 432 433 brcmf_dbg(INFO, "Enter, bus=%d, chip=%d, rev=%d\n", bus_type, chip, 434 chiprev); 435 settings = kzalloc(sizeof(*settings), GFP_ATOMIC); 436 if (!settings) 437 return NULL; 438 439 /* start by using the module paramaters */ 440 settings->p2p_enable = !!brcmf_p2p_enable; 441 settings->feature_disable = brcmf_feature_disable; 442 settings->fcmode = brcmf_fcmode; 443 settings->roamoff = !!brcmf_roamoff; 444 #ifdef DEBUG 445 settings->ignore_probe_fail = !!brcmf_ignore_probe_fail; 446 #endif 447 448 if (bus_type == BRCMF_BUSTYPE_SDIO) 449 settings->bus.sdio.txglomsz = brcmf_sdiod_txglomsz; 450 451 /* See if there is any device specific platform data configured */ 452 found = false; 453 if (brcmfmac_pdata) { 454 for (i = 0; i < brcmfmac_pdata->device_count; i++) { 455 device_pd = &brcmfmac_pdata->devices[i]; 456 if ((device_pd->bus_type == bus_type) && 457 (device_pd->id == chip) && 458 ((device_pd->rev == chiprev) || 459 (device_pd->rev == -1))) { 460 brcmf_dbg(INFO, "Platform data for device found\n"); 461 settings->country_codes = 462 device_pd->country_codes; 463 if (device_pd->bus_type == BRCMF_BUSTYPE_SDIO) 464 memcpy(&settings->bus.sdio, 465 &device_pd->bus.sdio, 466 sizeof(settings->bus.sdio)); 467 found = true; 468 break; 469 } 470 } 471 } 472 if (!found) { 473 /* No platform data for this device, try OF (Open Firwmare) */ 474 brcmf_of_probe(dev, bus_type, settings); 475 } 476 return settings; 477 } 478 479 void brcmf_release_module_param(struct brcmf_mp_device *module_param) 480 { 481 kfree(module_param); 482 } 483 484 static int __init brcmf_common_pd_probe(struct platform_device *pdev) 485 { 486 brcmf_dbg(INFO, "Enter\n"); 487 488 brcmfmac_pdata = dev_get_platdata(&pdev->dev); 489 490 if (brcmfmac_pdata->power_on) 491 brcmfmac_pdata->power_on(); 492 493 return 0; 494 } 495 496 static int brcmf_common_pd_remove(struct platform_device *pdev) 497 { 498 brcmf_dbg(INFO, "Enter\n"); 499 500 if (brcmfmac_pdata->power_off) 501 brcmfmac_pdata->power_off(); 502 503 return 0; 504 } 505 506 static struct platform_driver brcmf_pd = { 507 .remove = brcmf_common_pd_remove, 508 .driver = { 509 .name = BRCMFMAC_PDATA_NAME, 510 } 511 }; 512 513 static int __init brcmfmac_module_init(void) 514 { 515 int err; 516 517 /* Initialize debug system first */ 518 brcmf_debugfs_init(); 519 520 /* Get the platform data (if available) for our devices */ 521 err = platform_driver_probe(&brcmf_pd, brcmf_common_pd_probe); 522 if (err == -ENODEV) 523 brcmf_dbg(INFO, "No platform data available.\n"); 524 525 /* Initialize global module paramaters */ 526 brcmf_mp_attach(); 527 528 /* Continue the initialization by registering the different busses */ 529 err = brcmf_core_init(); 530 if (err) { 531 brcmf_debugfs_exit(); 532 if (brcmfmac_pdata) 533 platform_driver_unregister(&brcmf_pd); 534 } 535 536 return err; 537 } 538 539 static void __exit brcmfmac_module_exit(void) 540 { 541 brcmf_core_exit(); 542 if (brcmfmac_pdata) 543 platform_driver_unregister(&brcmf_pd); 544 brcmf_debugfs_exit(); 545 } 546 547 module_init(brcmfmac_module_init); 548 module_exit(brcmfmac_module_exit); 549 550