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