1 // SPDX-License-Identifier: ISC 2 /* 3 * Copyright (c) 2010 Broadcom Corporation 4 */ 5 6 #include <linux/kernel.h> 7 #include <linux/string.h> 8 #include <linux/netdevice.h> 9 #include <linux/module.h> 10 #include <linux/firmware.h> 11 #include <brcmu_wifi.h> 12 #include <brcmu_utils.h> 13 #include "core.h" 14 #include "bus.h" 15 #include "debug.h" 16 #include "fwil.h" 17 #include "fwil_types.h" 18 #include "tracepoint.h" 19 #include "common.h" 20 #include "of.h" 21 #include "firmware.h" 22 #include "chip.h" 23 24 MODULE_AUTHOR("Broadcom Corporation"); 25 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver."); 26 MODULE_LICENSE("Dual BSD/GPL"); 27 28 #define BRCMF_DEFAULT_SCAN_CHANNEL_TIME 40 29 #define BRCMF_DEFAULT_SCAN_UNASSOC_TIME 40 30 31 /* default boost value for RSSI_DELTA in preferred join selection */ 32 #define BRCMF_JOIN_PREF_RSSI_BOOST 8 33 34 #define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */ 35 36 static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE; 37 module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0); 38 MODULE_PARM_DESC(txglomsz, "Maximum tx packet chain size [SDIO]"); 39 40 /* Debug level configuration. See debug.h for bits, sysfs modifiable */ 41 int brcmf_msg_level; 42 module_param_named(debug, brcmf_msg_level, int, 0600); 43 MODULE_PARM_DESC(debug, "Level of debug output"); 44 45 static int brcmf_p2p_enable; 46 module_param_named(p2pon, brcmf_p2p_enable, int, 0); 47 MODULE_PARM_DESC(p2pon, "Enable legacy p2p management functionality"); 48 49 static int brcmf_feature_disable; 50 module_param_named(feature_disable, brcmf_feature_disable, int, 0); 51 MODULE_PARM_DESC(feature_disable, "Disable features"); 52 53 static char brcmf_firmware_path[BRCMF_FW_ALTPATH_LEN]; 54 module_param_string(alternative_fw_path, brcmf_firmware_path, 55 BRCMF_FW_ALTPATH_LEN, 0400); 56 MODULE_PARM_DESC(alternative_fw_path, "Alternative firmware path"); 57 58 static int brcmf_fcmode; 59 module_param_named(fcmode, brcmf_fcmode, int, 0); 60 MODULE_PARM_DESC(fcmode, "Mode of firmware signalled flow control"); 61 62 static int brcmf_roamoff; 63 module_param_named(roamoff, brcmf_roamoff, int, 0400); 64 MODULE_PARM_DESC(roamoff, "Do not use internal roaming engine"); 65 66 static int brcmf_iapp_enable; 67 module_param_named(iapp, brcmf_iapp_enable, int, 0); 68 MODULE_PARM_DESC(iapp, "Enable partial support for the obsoleted Inter-Access Point Protocol"); 69 70 #ifdef DEBUG 71 /* always succeed brcmf_bus_started() */ 72 static int brcmf_ignore_probe_fail; 73 module_param_named(ignore_probe_fail, brcmf_ignore_probe_fail, int, 0); 74 MODULE_PARM_DESC(ignore_probe_fail, "always succeed probe for debugging"); 75 #endif 76 77 static struct brcmfmac_platform_data *brcmfmac_pdata; 78 struct brcmf_mp_global_t brcmf_mp_global; 79 80 void brcmf_c_set_joinpref_default(struct brcmf_if *ifp) 81 { 82 struct brcmf_pub *drvr = ifp->drvr; 83 struct brcmf_join_pref_params join_pref_params[2]; 84 int err; 85 86 /* Setup join_pref to select target by RSSI (boost on 5GHz) */ 87 join_pref_params[0].type = BRCMF_JOIN_PREF_RSSI_DELTA; 88 join_pref_params[0].len = 2; 89 join_pref_params[0].rssi_gain = BRCMF_JOIN_PREF_RSSI_BOOST; 90 join_pref_params[0].band = WLC_BAND_5G; 91 92 join_pref_params[1].type = BRCMF_JOIN_PREF_RSSI; 93 join_pref_params[1].len = 2; 94 join_pref_params[1].rssi_gain = 0; 95 join_pref_params[1].band = 0; 96 err = brcmf_fil_iovar_data_set(ifp, "join_pref", join_pref_params, 97 sizeof(join_pref_params)); 98 if (err) 99 bphy_err(drvr, "Set join_pref error (%d)\n", err); 100 } 101 102 static int brcmf_c_download(struct brcmf_if *ifp, u16 flag, 103 struct brcmf_dload_data_le *dload_buf, 104 u32 len) 105 { 106 s32 err; 107 108 flag |= (DLOAD_HANDLER_VER << DLOAD_FLAG_VER_SHIFT); 109 dload_buf->flag = cpu_to_le16(flag); 110 dload_buf->dload_type = cpu_to_le16(DL_TYPE_CLM); 111 dload_buf->len = cpu_to_le32(len); 112 dload_buf->crc = cpu_to_le32(0); 113 len = sizeof(*dload_buf) + len - 1; 114 115 err = brcmf_fil_iovar_data_set(ifp, "clmload", dload_buf, len); 116 117 return err; 118 } 119 120 static int brcmf_c_process_clm_blob(struct brcmf_if *ifp) 121 { 122 struct brcmf_pub *drvr = ifp->drvr; 123 struct brcmf_bus *bus = drvr->bus_if; 124 struct brcmf_dload_data_le *chunk_buf; 125 const struct firmware *clm = NULL; 126 u8 clm_name[BRCMF_FW_NAME_LEN]; 127 u32 chunk_len; 128 u32 datalen; 129 u32 cumulative_len; 130 u16 dl_flag = DL_BEGIN; 131 u32 status; 132 s32 err; 133 134 brcmf_dbg(TRACE, "Enter\n"); 135 136 memset(clm_name, 0, sizeof(clm_name)); 137 err = brcmf_bus_get_fwname(bus, ".clm_blob", clm_name); 138 if (err) { 139 bphy_err(drvr, "get CLM blob file name failed (%d)\n", err); 140 return err; 141 } 142 143 err = firmware_request_nowarn(&clm, clm_name, bus->dev); 144 if (err) { 145 brcmf_info("no clm_blob available (err=%d), device may have limited channels available\n", 146 err); 147 return 0; 148 } 149 150 chunk_buf = kzalloc(sizeof(*chunk_buf) + MAX_CHUNK_LEN - 1, GFP_KERNEL); 151 if (!chunk_buf) { 152 err = -ENOMEM; 153 goto done; 154 } 155 156 datalen = clm->size; 157 cumulative_len = 0; 158 do { 159 if (datalen > MAX_CHUNK_LEN) { 160 chunk_len = MAX_CHUNK_LEN; 161 } else { 162 chunk_len = datalen; 163 dl_flag |= DL_END; 164 } 165 memcpy(chunk_buf->data, clm->data + cumulative_len, chunk_len); 166 167 err = brcmf_c_download(ifp, dl_flag, chunk_buf, chunk_len); 168 169 dl_flag &= ~DL_BEGIN; 170 171 cumulative_len += chunk_len; 172 datalen -= chunk_len; 173 } while ((datalen > 0) && (err == 0)); 174 175 if (err) { 176 bphy_err(drvr, "clmload (%zu byte file) failed (%d)\n", 177 clm->size, err); 178 /* Retrieve clmload_status and print */ 179 err = brcmf_fil_iovar_int_get(ifp, "clmload_status", &status); 180 if (err) 181 bphy_err(drvr, "get clmload_status failed (%d)\n", err); 182 else 183 brcmf_dbg(INFO, "clmload_status=%d\n", status); 184 err = -EIO; 185 } 186 187 kfree(chunk_buf); 188 done: 189 release_firmware(clm); 190 return err; 191 } 192 193 int brcmf_c_set_cur_etheraddr(struct brcmf_if *ifp, const u8 *addr) 194 { 195 s32 err; 196 197 err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", addr, ETH_ALEN); 198 if (err < 0) 199 bphy_err(ifp->drvr, "Setting cur_etheraddr failed, %d\n", err); 200 201 return err; 202 } 203 204 /* On some boards there is no eeprom to hold the nvram, in this case instead 205 * a board specific nvram is loaded from /lib/firmware. On most boards the 206 * macaddr setting in the /lib/firmware nvram file is ignored because the 207 * wifibt chip has a unique MAC programmed into the chip itself. 208 * But in some cases the actual MAC from the /lib/firmware nvram file gets 209 * used, leading to MAC conflicts. 210 * The MAC addresses in the troublesome nvram files seem to all come from 211 * the same nvram file template, so we only need to check for 1 known 212 * address to detect this. 213 */ 214 static const u8 brcmf_default_mac_address[ETH_ALEN] = { 215 0x00, 0x90, 0x4c, 0xc5, 0x12, 0x38 216 }; 217 218 int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) 219 { 220 struct brcmf_pub *drvr = ifp->drvr; 221 s8 eventmask[BRCMF_EVENTING_MASK_LEN]; 222 u8 buf[BRCMF_DCMD_SMLEN]; 223 struct brcmf_bus *bus; 224 struct brcmf_rev_info_le revinfo; 225 struct brcmf_rev_info *ri; 226 char *clmver; 227 char *ptr; 228 s32 err; 229 230 if (is_valid_ether_addr(ifp->mac_addr)) { 231 /* set mac address */ 232 err = brcmf_c_set_cur_etheraddr(ifp, ifp->mac_addr); 233 if (err < 0) 234 goto done; 235 } else { 236 /* retrieve mac address */ 237 err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr, 238 sizeof(ifp->mac_addr)); 239 if (err < 0) { 240 bphy_err(drvr, "Retrieving cur_etheraddr failed, %d\n", err); 241 goto done; 242 } 243 244 if (ether_addr_equal_unaligned(ifp->mac_addr, brcmf_default_mac_address)) { 245 bphy_err(drvr, "Default MAC is used, replacing with random MAC to avoid conflicts\n"); 246 eth_random_addr(ifp->mac_addr); 247 ifp->ndev->addr_assign_type = NET_ADDR_RANDOM; 248 err = brcmf_c_set_cur_etheraddr(ifp, ifp->mac_addr); 249 if (err < 0) 250 goto done; 251 } 252 } 253 254 memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac)); 255 memcpy(ifp->drvr->wiphy->perm_addr, ifp->drvr->mac, ETH_ALEN); 256 257 bus = ifp->drvr->bus_if; 258 ri = &ifp->drvr->revinfo; 259 260 err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_REVINFO, 261 &revinfo, sizeof(revinfo)); 262 if (err < 0) { 263 bphy_err(drvr, "retrieving revision info failed, %d\n", err); 264 strlcpy(ri->chipname, "UNKNOWN", sizeof(ri->chipname)); 265 } else { 266 ri->vendorid = le32_to_cpu(revinfo.vendorid); 267 ri->deviceid = le32_to_cpu(revinfo.deviceid); 268 ri->radiorev = le32_to_cpu(revinfo.radiorev); 269 ri->corerev = le32_to_cpu(revinfo.corerev); 270 ri->boardid = le32_to_cpu(revinfo.boardid); 271 ri->boardvendor = le32_to_cpu(revinfo.boardvendor); 272 ri->boardrev = le32_to_cpu(revinfo.boardrev); 273 ri->driverrev = le32_to_cpu(revinfo.driverrev); 274 ri->ucoderev = le32_to_cpu(revinfo.ucoderev); 275 ri->bus = le32_to_cpu(revinfo.bus); 276 ri->phytype = le32_to_cpu(revinfo.phytype); 277 ri->phyrev = le32_to_cpu(revinfo.phyrev); 278 ri->anarev = le32_to_cpu(revinfo.anarev); 279 ri->chippkg = le32_to_cpu(revinfo.chippkg); 280 ri->nvramrev = le32_to_cpu(revinfo.nvramrev); 281 282 /* use revinfo if not known yet */ 283 if (!bus->chip) { 284 bus->chip = le32_to_cpu(revinfo.chipnum); 285 bus->chiprev = le32_to_cpu(revinfo.chiprev); 286 } 287 } 288 ri->result = err; 289 290 if (bus->chip) 291 brcmf_chip_name(bus->chip, bus->chiprev, 292 ri->chipname, sizeof(ri->chipname)); 293 294 /* Do any CLM downloading */ 295 err = brcmf_c_process_clm_blob(ifp); 296 if (err < 0) { 297 bphy_err(drvr, "download CLM blob file failed, %d\n", err); 298 goto done; 299 } 300 301 /* query for 'ver' to get version info from firmware */ 302 memset(buf, 0, sizeof(buf)); 303 err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf)); 304 if (err < 0) { 305 bphy_err(drvr, "Retrieving version information failed, %d\n", 306 err); 307 goto done; 308 } 309 ptr = (char *)buf; 310 strsep(&ptr, "\n"); 311 312 /* Print fw version info */ 313 brcmf_info("Firmware: %s %s\n", ri->chipname, buf); 314 315 /* locate firmware version number for ethtool */ 316 ptr = strrchr(buf, ' ') + 1; 317 strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver)); 318 319 /* Query for 'clmver' to get CLM version info from firmware */ 320 memset(buf, 0, sizeof(buf)); 321 err = brcmf_fil_iovar_data_get(ifp, "clmver", buf, sizeof(buf)); 322 if (err) { 323 brcmf_dbg(TRACE, "retrieving clmver failed, %d\n", err); 324 } else { 325 clmver = (char *)buf; 326 /* store CLM version for adding it to revinfo debugfs file */ 327 memcpy(ifp->drvr->clmver, clmver, sizeof(ifp->drvr->clmver)); 328 329 /* Replace all newline/linefeed characters with space 330 * character 331 */ 332 strreplace(clmver, '\n', ' '); 333 334 brcmf_dbg(INFO, "CLM version = %s\n", clmver); 335 } 336 337 /* set mpc */ 338 err = brcmf_fil_iovar_int_set(ifp, "mpc", 1); 339 if (err) { 340 bphy_err(drvr, "failed setting mpc\n"); 341 goto done; 342 } 343 344 brcmf_c_set_joinpref_default(ifp); 345 346 /* Setup event_msgs, enable E_IF */ 347 err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask, 348 BRCMF_EVENTING_MASK_LEN); 349 if (err) { 350 bphy_err(drvr, "Get event_msgs error (%d)\n", err); 351 goto done; 352 } 353 setbit(eventmask, BRCMF_E_IF); 354 err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask, 355 BRCMF_EVENTING_MASK_LEN); 356 if (err) { 357 bphy_err(drvr, "Set event_msgs error (%d)\n", err); 358 goto done; 359 } 360 361 /* Setup default scan channel time */ 362 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME, 363 BRCMF_DEFAULT_SCAN_CHANNEL_TIME); 364 if (err) { 365 bphy_err(drvr, "BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n", 366 err); 367 goto done; 368 } 369 370 /* Setup default scan unassoc time */ 371 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME, 372 BRCMF_DEFAULT_SCAN_UNASSOC_TIME); 373 if (err) { 374 bphy_err(drvr, "BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n", 375 err); 376 goto done; 377 } 378 379 /* Enable tx beamforming, errors can be ignored (not supported) */ 380 (void)brcmf_fil_iovar_int_set(ifp, "txbf", 1); 381 done: 382 return err; 383 } 384 385 #ifndef CONFIG_BRCM_TRACING 386 void __brcmf_err(struct brcmf_bus *bus, const char *func, const char *fmt, ...) 387 { 388 struct va_format vaf; 389 va_list args; 390 391 va_start(args, fmt); 392 393 vaf.fmt = fmt; 394 vaf.va = &args; 395 if (bus) 396 dev_err(bus->dev, "%s: %pV", func, &vaf); 397 else 398 pr_err("%s: %pV", func, &vaf); 399 400 va_end(args); 401 } 402 #endif 403 404 #if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG) 405 void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...) 406 { 407 struct va_format vaf = { 408 .fmt = fmt, 409 }; 410 va_list args; 411 412 va_start(args, fmt); 413 vaf.va = &args; 414 if (brcmf_msg_level & level) 415 pr_debug("%s %pV", func, &vaf); 416 trace_brcmf_dbg(level, func, &vaf); 417 va_end(args); 418 } 419 #endif 420 421 static void brcmf_mp_attach(void) 422 { 423 /* If module param firmware path is set then this will always be used, 424 * if not set then if available use the platform data version. To make 425 * sure it gets initialized at all, always copy the module param version 426 */ 427 strlcpy(brcmf_mp_global.firmware_path, brcmf_firmware_path, 428 BRCMF_FW_ALTPATH_LEN); 429 if ((brcmfmac_pdata) && (brcmfmac_pdata->fw_alternative_path) && 430 (brcmf_mp_global.firmware_path[0] == '\0')) { 431 strlcpy(brcmf_mp_global.firmware_path, 432 brcmfmac_pdata->fw_alternative_path, 433 BRCMF_FW_ALTPATH_LEN); 434 } 435 } 436 437 struct brcmf_mp_device *brcmf_get_module_param(struct device *dev, 438 enum brcmf_bus_type bus_type, 439 u32 chip, u32 chiprev) 440 { 441 struct brcmf_mp_device *settings; 442 struct brcmfmac_pd_device *device_pd; 443 bool found; 444 int i; 445 446 brcmf_dbg(INFO, "Enter, bus=%d, chip=%d, rev=%d\n", bus_type, chip, 447 chiprev); 448 settings = kzalloc(sizeof(*settings), GFP_ATOMIC); 449 if (!settings) 450 return NULL; 451 452 /* start by using the module paramaters */ 453 settings->p2p_enable = !!brcmf_p2p_enable; 454 settings->feature_disable = brcmf_feature_disable; 455 settings->fcmode = brcmf_fcmode; 456 settings->roamoff = !!brcmf_roamoff; 457 settings->iapp = !!brcmf_iapp_enable; 458 #ifdef DEBUG 459 settings->ignore_probe_fail = !!brcmf_ignore_probe_fail; 460 #endif 461 462 if (bus_type == BRCMF_BUSTYPE_SDIO) 463 settings->bus.sdio.txglomsz = brcmf_sdiod_txglomsz; 464 465 /* See if there is any device specific platform data configured */ 466 found = false; 467 if (brcmfmac_pdata) { 468 for (i = 0; i < brcmfmac_pdata->device_count; i++) { 469 device_pd = &brcmfmac_pdata->devices[i]; 470 if ((device_pd->bus_type == bus_type) && 471 (device_pd->id == chip) && 472 ((device_pd->rev == chiprev) || 473 (device_pd->rev == -1))) { 474 brcmf_dbg(INFO, "Platform data for device found\n"); 475 settings->country_codes = 476 device_pd->country_codes; 477 if (device_pd->bus_type == BRCMF_BUSTYPE_SDIO) 478 memcpy(&settings->bus.sdio, 479 &device_pd->bus.sdio, 480 sizeof(settings->bus.sdio)); 481 found = true; 482 break; 483 } 484 } 485 } 486 if (!found) { 487 /* No platform data for this device, try OF and DMI data */ 488 brcmf_dmi_probe(settings, chip, chiprev); 489 brcmf_of_probe(dev, bus_type, settings); 490 } 491 return settings; 492 } 493 494 void brcmf_release_module_param(struct brcmf_mp_device *module_param) 495 { 496 kfree(module_param); 497 } 498 499 static int __init brcmf_common_pd_probe(struct platform_device *pdev) 500 { 501 brcmf_dbg(INFO, "Enter\n"); 502 503 brcmfmac_pdata = dev_get_platdata(&pdev->dev); 504 505 if (brcmfmac_pdata->power_on) 506 brcmfmac_pdata->power_on(); 507 508 return 0; 509 } 510 511 static int brcmf_common_pd_remove(struct platform_device *pdev) 512 { 513 brcmf_dbg(INFO, "Enter\n"); 514 515 if (brcmfmac_pdata->power_off) 516 brcmfmac_pdata->power_off(); 517 518 return 0; 519 } 520 521 static struct platform_driver brcmf_pd = { 522 .remove = brcmf_common_pd_remove, 523 .driver = { 524 .name = BRCMFMAC_PDATA_NAME, 525 } 526 }; 527 528 static int __init brcmfmac_module_init(void) 529 { 530 int err; 531 532 /* Get the platform data (if available) for our devices */ 533 err = platform_driver_probe(&brcmf_pd, brcmf_common_pd_probe); 534 if (err == -ENODEV) 535 brcmf_dbg(INFO, "No platform data available.\n"); 536 537 /* Initialize global module paramaters */ 538 brcmf_mp_attach(); 539 540 /* Continue the initialization by registering the different busses */ 541 err = brcmf_core_init(); 542 if (err) { 543 if (brcmfmac_pdata) 544 platform_driver_unregister(&brcmf_pd); 545 } 546 547 return err; 548 } 549 550 static void __exit brcmfmac_module_exit(void) 551 { 552 brcmf_core_exit(); 553 if (brcmfmac_pdata) 554 platform_driver_unregister(&brcmf_pd); 555 } 556 557 module_init(brcmfmac_module_init); 558 module_exit(brcmfmac_module_exit); 559 560