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