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 u32 chunk_len; 127 u32 datalen; 128 u32 cumulative_len; 129 u16 dl_flag = DL_BEGIN; 130 u32 status; 131 s32 err; 132 133 brcmf_dbg(TRACE, "Enter\n"); 134 135 err = brcmf_bus_get_blob(bus, &clm, BRCMF_BLOB_CLM); 136 if (err || !clm) { 137 brcmf_info("no clm_blob available (err=%d), device may have limited channels available\n", 138 err); 139 return 0; 140 } 141 142 chunk_buf = kzalloc(sizeof(*chunk_buf) + MAX_CHUNK_LEN - 1, GFP_KERNEL); 143 if (!chunk_buf) { 144 err = -ENOMEM; 145 goto done; 146 } 147 148 datalen = clm->size; 149 cumulative_len = 0; 150 do { 151 if (datalen > MAX_CHUNK_LEN) { 152 chunk_len = MAX_CHUNK_LEN; 153 } else { 154 chunk_len = datalen; 155 dl_flag |= DL_END; 156 } 157 memcpy(chunk_buf->data, clm->data + cumulative_len, chunk_len); 158 159 err = brcmf_c_download(ifp, dl_flag, chunk_buf, chunk_len); 160 161 dl_flag &= ~DL_BEGIN; 162 163 cumulative_len += chunk_len; 164 datalen -= chunk_len; 165 } while ((datalen > 0) && (err == 0)); 166 167 if (err) { 168 bphy_err(drvr, "clmload (%zu byte file) failed (%d)\n", 169 clm->size, err); 170 /* Retrieve clmload_status and print */ 171 err = brcmf_fil_iovar_int_get(ifp, "clmload_status", &status); 172 if (err) 173 bphy_err(drvr, "get clmload_status failed (%d)\n", err); 174 else 175 brcmf_dbg(INFO, "clmload_status=%d\n", status); 176 err = -EIO; 177 } 178 179 kfree(chunk_buf); 180 done: 181 release_firmware(clm); 182 return err; 183 } 184 185 int brcmf_c_set_cur_etheraddr(struct brcmf_if *ifp, const u8 *addr) 186 { 187 s32 err; 188 189 err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", addr, ETH_ALEN); 190 if (err < 0) 191 bphy_err(ifp->drvr, "Setting cur_etheraddr failed, %d\n", err); 192 193 return err; 194 } 195 196 /* On some boards there is no eeprom to hold the nvram, in this case instead 197 * a board specific nvram is loaded from /lib/firmware. On most boards the 198 * macaddr setting in the /lib/firmware nvram file is ignored because the 199 * wifibt chip has a unique MAC programmed into the chip itself. 200 * But in some cases the actual MAC from the /lib/firmware nvram file gets 201 * used, leading to MAC conflicts. 202 * The MAC addresses in the troublesome nvram files seem to all come from 203 * the same nvram file template, so we only need to check for 1 known 204 * address to detect this. 205 */ 206 static const u8 brcmf_default_mac_address[ETH_ALEN] = { 207 0x00, 0x90, 0x4c, 0xc5, 0x12, 0x38 208 }; 209 210 int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) 211 { 212 struct brcmf_pub *drvr = ifp->drvr; 213 s8 eventmask[BRCMF_EVENTING_MASK_LEN]; 214 u8 buf[BRCMF_DCMD_SMLEN]; 215 struct brcmf_bus *bus; 216 struct brcmf_rev_info_le revinfo; 217 struct brcmf_rev_info *ri; 218 char *clmver; 219 char *ptr; 220 s32 err; 221 222 if (is_valid_ether_addr(ifp->mac_addr)) { 223 /* set mac address */ 224 err = brcmf_c_set_cur_etheraddr(ifp, ifp->mac_addr); 225 if (err < 0) 226 goto done; 227 } else { 228 /* retrieve mac address */ 229 err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr, 230 sizeof(ifp->mac_addr)); 231 if (err < 0) { 232 bphy_err(drvr, "Retrieving cur_etheraddr failed, %d\n", err); 233 goto done; 234 } 235 236 if (ether_addr_equal_unaligned(ifp->mac_addr, brcmf_default_mac_address)) { 237 bphy_err(drvr, "Default MAC is used, replacing with random MAC to avoid conflicts\n"); 238 eth_random_addr(ifp->mac_addr); 239 ifp->ndev->addr_assign_type = NET_ADDR_RANDOM; 240 err = brcmf_c_set_cur_etheraddr(ifp, ifp->mac_addr); 241 if (err < 0) 242 goto done; 243 } 244 } 245 246 memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac)); 247 memcpy(ifp->drvr->wiphy->perm_addr, ifp->drvr->mac, ETH_ALEN); 248 249 bus = ifp->drvr->bus_if; 250 ri = &ifp->drvr->revinfo; 251 252 err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_REVINFO, 253 &revinfo, sizeof(revinfo)); 254 if (err < 0) { 255 bphy_err(drvr, "retrieving revision info failed, %d\n", err); 256 strscpy(ri->chipname, "UNKNOWN", sizeof(ri->chipname)); 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->corerev = le32_to_cpu(revinfo.corerev); 262 ri->boardid = le32_to_cpu(revinfo.boardid); 263 ri->boardvendor = le32_to_cpu(revinfo.boardvendor); 264 ri->boardrev = le32_to_cpu(revinfo.boardrev); 265 ri->driverrev = le32_to_cpu(revinfo.driverrev); 266 ri->ucoderev = le32_to_cpu(revinfo.ucoderev); 267 ri->bus = le32_to_cpu(revinfo.bus); 268 ri->phytype = le32_to_cpu(revinfo.phytype); 269 ri->phyrev = le32_to_cpu(revinfo.phyrev); 270 ri->anarev = le32_to_cpu(revinfo.anarev); 271 ri->chippkg = le32_to_cpu(revinfo.chippkg); 272 ri->nvramrev = le32_to_cpu(revinfo.nvramrev); 273 274 /* use revinfo if not known yet */ 275 if (!bus->chip) { 276 bus->chip = le32_to_cpu(revinfo.chipnum); 277 bus->chiprev = le32_to_cpu(revinfo.chiprev); 278 } 279 } 280 ri->result = err; 281 282 if (bus->chip) 283 brcmf_chip_name(bus->chip, bus->chiprev, 284 ri->chipname, sizeof(ri->chipname)); 285 286 /* Do any CLM downloading */ 287 err = brcmf_c_process_clm_blob(ifp); 288 if (err < 0) { 289 bphy_err(drvr, "download CLM blob file failed, %d\n", err); 290 goto done; 291 } 292 293 /* query for 'ver' to get version info from firmware */ 294 memset(buf, 0, sizeof(buf)); 295 err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf)); 296 if (err < 0) { 297 bphy_err(drvr, "Retrieving version information failed, %d\n", 298 err); 299 goto done; 300 } 301 ptr = (char *)buf; 302 strsep(&ptr, "\n"); 303 304 /* Print fw version info */ 305 brcmf_info("Firmware: %s %s\n", ri->chipname, buf); 306 307 /* locate firmware version number for ethtool */ 308 ptr = strrchr(buf, ' ') + 1; 309 strscpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver)); 310 311 /* Query for 'clmver' to get CLM version info from firmware */ 312 memset(buf, 0, sizeof(buf)); 313 err = brcmf_fil_iovar_data_get(ifp, "clmver", buf, sizeof(buf)); 314 if (err) { 315 brcmf_dbg(TRACE, "retrieving clmver failed, %d\n", err); 316 } else { 317 clmver = (char *)buf; 318 /* store CLM version for adding it to revinfo debugfs file */ 319 memcpy(ifp->drvr->clmver, clmver, sizeof(ifp->drvr->clmver)); 320 321 /* Replace all newline/linefeed characters with space 322 * character 323 */ 324 strreplace(clmver, '\n', ' '); 325 326 brcmf_dbg(INFO, "CLM version = %s\n", clmver); 327 } 328 329 /* set mpc */ 330 err = brcmf_fil_iovar_int_set(ifp, "mpc", 1); 331 if (err) { 332 bphy_err(drvr, "failed setting mpc\n"); 333 goto done; 334 } 335 336 brcmf_c_set_joinpref_default(ifp); 337 338 /* Setup event_msgs, enable E_IF */ 339 err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask, 340 BRCMF_EVENTING_MASK_LEN); 341 if (err) { 342 bphy_err(drvr, "Get event_msgs error (%d)\n", err); 343 goto done; 344 } 345 setbit(eventmask, BRCMF_E_IF); 346 err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask, 347 BRCMF_EVENTING_MASK_LEN); 348 if (err) { 349 bphy_err(drvr, "Set event_msgs error (%d)\n", err); 350 goto done; 351 } 352 353 /* Setup default scan channel time */ 354 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME, 355 BRCMF_DEFAULT_SCAN_CHANNEL_TIME); 356 if (err) { 357 bphy_err(drvr, "BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n", 358 err); 359 goto done; 360 } 361 362 /* Setup default scan unassoc time */ 363 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME, 364 BRCMF_DEFAULT_SCAN_UNASSOC_TIME); 365 if (err) { 366 bphy_err(drvr, "BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n", 367 err); 368 goto done; 369 } 370 371 /* Enable tx beamforming, errors can be ignored (not supported) */ 372 (void)brcmf_fil_iovar_int_set(ifp, "txbf", 1); 373 done: 374 return err; 375 } 376 377 #ifndef CONFIG_BRCM_TRACING 378 void __brcmf_err(struct brcmf_bus *bus, const char *func, const char *fmt, ...) 379 { 380 struct va_format vaf; 381 va_list args; 382 383 va_start(args, fmt); 384 385 vaf.fmt = fmt; 386 vaf.va = &args; 387 if (bus) 388 dev_err(bus->dev, "%s: %pV", func, &vaf); 389 else 390 pr_err("%s: %pV", func, &vaf); 391 392 va_end(args); 393 } 394 #endif 395 396 #if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG) 397 void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...) 398 { 399 struct va_format vaf = { 400 .fmt = fmt, 401 }; 402 va_list args; 403 404 va_start(args, fmt); 405 vaf.va = &args; 406 if (brcmf_msg_level & level) 407 pr_debug("%s %pV", func, &vaf); 408 trace_brcmf_dbg(level, func, &vaf); 409 va_end(args); 410 } 411 #endif 412 413 static void brcmf_mp_attach(void) 414 { 415 /* If module param firmware path is set then this will always be used, 416 * if not set then if available use the platform data version. To make 417 * sure it gets initialized at all, always copy the module param version 418 */ 419 strscpy(brcmf_mp_global.firmware_path, brcmf_firmware_path, 420 BRCMF_FW_ALTPATH_LEN); 421 if ((brcmfmac_pdata) && (brcmfmac_pdata->fw_alternative_path) && 422 (brcmf_mp_global.firmware_path[0] == '\0')) { 423 strscpy(brcmf_mp_global.firmware_path, 424 brcmfmac_pdata->fw_alternative_path, 425 BRCMF_FW_ALTPATH_LEN); 426 } 427 } 428 429 struct brcmf_mp_device *brcmf_get_module_param(struct device *dev, 430 enum brcmf_bus_type bus_type, 431 u32 chip, u32 chiprev) 432 { 433 struct brcmf_mp_device *settings; 434 struct brcmfmac_pd_device *device_pd; 435 bool found; 436 int i; 437 438 brcmf_dbg(INFO, "Enter, bus=%d, chip=%d, rev=%d\n", bus_type, chip, 439 chiprev); 440 settings = kzalloc(sizeof(*settings), GFP_ATOMIC); 441 if (!settings) 442 return NULL; 443 444 /* start by using the module paramaters */ 445 settings->p2p_enable = !!brcmf_p2p_enable; 446 settings->feature_disable = brcmf_feature_disable; 447 settings->fcmode = brcmf_fcmode; 448 settings->roamoff = !!brcmf_roamoff; 449 settings->iapp = !!brcmf_iapp_enable; 450 #ifdef DEBUG 451 settings->ignore_probe_fail = !!brcmf_ignore_probe_fail; 452 #endif 453 454 if (bus_type == BRCMF_BUSTYPE_SDIO) 455 settings->bus.sdio.txglomsz = brcmf_sdiod_txglomsz; 456 457 /* See if there is any device specific platform data configured */ 458 found = false; 459 if (brcmfmac_pdata) { 460 for (i = 0; i < brcmfmac_pdata->device_count; i++) { 461 device_pd = &brcmfmac_pdata->devices[i]; 462 if ((device_pd->bus_type == bus_type) && 463 (device_pd->id == chip) && 464 ((device_pd->rev == chiprev) || 465 (device_pd->rev == -1))) { 466 brcmf_dbg(INFO, "Platform data for device found\n"); 467 settings->country_codes = 468 device_pd->country_codes; 469 if (device_pd->bus_type == BRCMF_BUSTYPE_SDIO) 470 memcpy(&settings->bus.sdio, 471 &device_pd->bus.sdio, 472 sizeof(settings->bus.sdio)); 473 found = true; 474 break; 475 } 476 } 477 } 478 if (!found) { 479 /* No platform data for this device, try OF and DMI data */ 480 brcmf_dmi_probe(settings, chip, chiprev); 481 brcmf_of_probe(dev, bus_type, settings); 482 } 483 return settings; 484 } 485 486 void brcmf_release_module_param(struct brcmf_mp_device *module_param) 487 { 488 kfree(module_param); 489 } 490 491 static int __init brcmf_common_pd_probe(struct platform_device *pdev) 492 { 493 brcmf_dbg(INFO, "Enter\n"); 494 495 brcmfmac_pdata = dev_get_platdata(&pdev->dev); 496 497 if (brcmfmac_pdata->power_on) 498 brcmfmac_pdata->power_on(); 499 500 return 0; 501 } 502 503 static int brcmf_common_pd_remove(struct platform_device *pdev) 504 { 505 brcmf_dbg(INFO, "Enter\n"); 506 507 if (brcmfmac_pdata->power_off) 508 brcmfmac_pdata->power_off(); 509 510 return 0; 511 } 512 513 static struct platform_driver brcmf_pd = { 514 .remove = brcmf_common_pd_remove, 515 .driver = { 516 .name = BRCMFMAC_PDATA_NAME, 517 } 518 }; 519 520 static int __init brcmfmac_module_init(void) 521 { 522 int err; 523 524 /* Get the platform data (if available) for our devices */ 525 err = platform_driver_probe(&brcmf_pd, brcmf_common_pd_probe); 526 if (err == -ENODEV) 527 brcmf_dbg(INFO, "No platform data available.\n"); 528 529 /* Initialize global module paramaters */ 530 brcmf_mp_attach(); 531 532 /* Continue the initialization by registering the different busses */ 533 err = brcmf_core_init(); 534 if (err) { 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 } 548 549 module_init(brcmfmac_module_init); 550 module_exit(brcmfmac_module_exit); 551 552