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 <brcmu_wifi.h> 22 #include <brcmu_utils.h> 23 #include "core.h" 24 #include "bus.h" 25 #include "debug.h" 26 #include "fwil.h" 27 #include "fwil_types.h" 28 #include "tracepoint.h" 29 #include "common.h" 30 #include "of.h" 31 32 MODULE_AUTHOR("Broadcom Corporation"); 33 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver."); 34 MODULE_LICENSE("Dual BSD/GPL"); 35 36 const u8 ALLFFMAC[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 37 38 #define BRCMF_DEFAULT_SCAN_CHANNEL_TIME 40 39 #define BRCMF_DEFAULT_SCAN_UNASSOC_TIME 40 40 41 /* boost value for RSSI_DELTA in preferred join selection */ 42 #define BRCMF_JOIN_PREF_RSSI_BOOST 8 43 44 #define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */ 45 46 static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE; 47 module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0); 48 MODULE_PARM_DESC(txglomsz, "Maximum tx packet chain size [SDIO]"); 49 50 /* Debug level configuration. See debug.h for bits, sysfs modifiable */ 51 int brcmf_msg_level; 52 module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR); 53 MODULE_PARM_DESC(debug, "Level of debug output"); 54 55 static int brcmf_p2p_enable; 56 module_param_named(p2pon, brcmf_p2p_enable, int, 0); 57 MODULE_PARM_DESC(p2pon, "Enable legacy p2p management functionality"); 58 59 static int brcmf_feature_disable; 60 module_param_named(feature_disable, brcmf_feature_disable, int, 0); 61 MODULE_PARM_DESC(feature_disable, "Disable features"); 62 63 static char brcmf_firmware_path[BRCMF_FW_ALTPATH_LEN]; 64 module_param_string(alternative_fw_path, brcmf_firmware_path, 65 BRCMF_FW_ALTPATH_LEN, S_IRUSR); 66 MODULE_PARM_DESC(alternative_fw_path, "Alternative firmware path"); 67 68 static int brcmf_fcmode; 69 module_param_named(fcmode, brcmf_fcmode, int, 0); 70 MODULE_PARM_DESC(fcmode, "Mode of firmware signalled flow control"); 71 72 static int brcmf_roamoff; 73 module_param_named(roamoff, brcmf_roamoff, int, S_IRUSR); 74 MODULE_PARM_DESC(roamoff, "Do not use internal roaming engine"); 75 76 #ifdef DEBUG 77 /* always succeed brcmf_bus_start() */ 78 static int brcmf_ignore_probe_fail; 79 module_param_named(ignore_probe_fail, brcmf_ignore_probe_fail, int, 0); 80 MODULE_PARM_DESC(ignore_probe_fail, "always succeed probe for debugging"); 81 #endif 82 83 static struct brcmfmac_platform_data *brcmfmac_pdata; 84 struct brcmf_mp_global_t brcmf_mp_global; 85 86 int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) 87 { 88 s8 eventmask[BRCMF_EVENTING_MASK_LEN]; 89 u8 buf[BRCMF_DCMD_SMLEN]; 90 struct brcmf_join_pref_params join_pref_params[2]; 91 struct brcmf_rev_info_le revinfo; 92 struct brcmf_rev_info *ri; 93 char *ptr; 94 s32 err; 95 96 /* retreive mac address */ 97 err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr, 98 sizeof(ifp->mac_addr)); 99 if (err < 0) { 100 brcmf_err("Retreiving cur_etheraddr failed, %d\n", err); 101 goto done; 102 } 103 memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac)); 104 105 err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_REVINFO, 106 &revinfo, sizeof(revinfo)); 107 ri = &ifp->drvr->revinfo; 108 if (err < 0) { 109 brcmf_err("retrieving revision info failed, %d\n", err); 110 } else { 111 ri->vendorid = le32_to_cpu(revinfo.vendorid); 112 ri->deviceid = le32_to_cpu(revinfo.deviceid); 113 ri->radiorev = le32_to_cpu(revinfo.radiorev); 114 ri->chiprev = le32_to_cpu(revinfo.chiprev); 115 ri->corerev = le32_to_cpu(revinfo.corerev); 116 ri->boardid = le32_to_cpu(revinfo.boardid); 117 ri->boardvendor = le32_to_cpu(revinfo.boardvendor); 118 ri->boardrev = le32_to_cpu(revinfo.boardrev); 119 ri->driverrev = le32_to_cpu(revinfo.driverrev); 120 ri->ucoderev = le32_to_cpu(revinfo.ucoderev); 121 ri->bus = le32_to_cpu(revinfo.bus); 122 ri->chipnum = le32_to_cpu(revinfo.chipnum); 123 ri->phytype = le32_to_cpu(revinfo.phytype); 124 ri->phyrev = le32_to_cpu(revinfo.phyrev); 125 ri->anarev = le32_to_cpu(revinfo.anarev); 126 ri->chippkg = le32_to_cpu(revinfo.chippkg); 127 ri->nvramrev = le32_to_cpu(revinfo.nvramrev); 128 } 129 ri->result = err; 130 131 /* query for 'ver' to get version info from firmware */ 132 memset(buf, 0, sizeof(buf)); 133 strcpy(buf, "ver"); 134 err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf)); 135 if (err < 0) { 136 brcmf_err("Retreiving version information failed, %d\n", 137 err); 138 goto done; 139 } 140 ptr = (char *)buf; 141 strsep(&ptr, "\n"); 142 143 /* Print fw version info */ 144 brcmf_err("Firmware version = %s\n", buf); 145 146 /* locate firmware version number for ethtool */ 147 ptr = strrchr(buf, ' ') + 1; 148 strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver)); 149 150 /* set mpc */ 151 err = brcmf_fil_iovar_int_set(ifp, "mpc", 1); 152 if (err) { 153 brcmf_err("failed setting mpc\n"); 154 goto done; 155 } 156 157 /* Setup join_pref to select target by RSSI(with boost on 5GHz) */ 158 join_pref_params[0].type = BRCMF_JOIN_PREF_RSSI_DELTA; 159 join_pref_params[0].len = 2; 160 join_pref_params[0].rssi_gain = BRCMF_JOIN_PREF_RSSI_BOOST; 161 join_pref_params[0].band = WLC_BAND_5G; 162 join_pref_params[1].type = BRCMF_JOIN_PREF_RSSI; 163 join_pref_params[1].len = 2; 164 join_pref_params[1].rssi_gain = 0; 165 join_pref_params[1].band = 0; 166 err = brcmf_fil_iovar_data_set(ifp, "join_pref", join_pref_params, 167 sizeof(join_pref_params)); 168 if (err) 169 brcmf_err("Set join_pref error (%d)\n", err); 170 171 /* Setup event_msgs, enable E_IF */ 172 err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask, 173 BRCMF_EVENTING_MASK_LEN); 174 if (err) { 175 brcmf_err("Get event_msgs error (%d)\n", err); 176 goto done; 177 } 178 setbit(eventmask, BRCMF_E_IF); 179 err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask, 180 BRCMF_EVENTING_MASK_LEN); 181 if (err) { 182 brcmf_err("Set event_msgs error (%d)\n", err); 183 goto done; 184 } 185 186 /* Setup default scan channel time */ 187 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME, 188 BRCMF_DEFAULT_SCAN_CHANNEL_TIME); 189 if (err) { 190 brcmf_err("BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n", 191 err); 192 goto done; 193 } 194 195 /* Setup default scan unassoc time */ 196 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME, 197 BRCMF_DEFAULT_SCAN_UNASSOC_TIME); 198 if (err) { 199 brcmf_err("BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n", 200 err); 201 goto done; 202 } 203 204 /* Enable tx beamforming, errors can be ignored (not supported) */ 205 (void)brcmf_fil_iovar_int_set(ifp, "txbf", 1); 206 207 /* do bus specific preinit here */ 208 err = brcmf_bus_preinit(ifp->drvr->bus_if); 209 done: 210 return err; 211 } 212 213 #if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG) 214 void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...) 215 { 216 struct va_format vaf = { 217 .fmt = fmt, 218 }; 219 va_list args; 220 221 va_start(args, fmt); 222 vaf.va = &args; 223 if (brcmf_msg_level & level) 224 pr_debug("%s %pV", func, &vaf); 225 trace_brcmf_dbg(level, func, &vaf); 226 va_end(args); 227 } 228 #endif 229 230 static void brcmf_mp_attach(void) 231 { 232 /* If module param firmware path is set then this will always be used, 233 * if not set then if available use the platform data version. To make 234 * sure it gets initialized at all, always copy the module param version 235 */ 236 strlcpy(brcmf_mp_global.firmware_path, brcmf_firmware_path, 237 BRCMF_FW_ALTPATH_LEN); 238 if ((brcmfmac_pdata) && (brcmfmac_pdata->fw_alternative_path) && 239 (brcmf_mp_global.firmware_path[0] == '\0')) { 240 strlcpy(brcmf_mp_global.firmware_path, 241 brcmfmac_pdata->fw_alternative_path, 242 BRCMF_FW_ALTPATH_LEN); 243 } 244 } 245 246 struct brcmf_mp_device *brcmf_get_module_param(struct device *dev, 247 enum brcmf_bus_type bus_type, 248 u32 chip, u32 chiprev) 249 { 250 struct brcmf_mp_device *settings; 251 struct brcmfmac_pd_device *device_pd; 252 bool found; 253 int i; 254 255 brcmf_dbg(INFO, "Enter, bus=%d, chip=%d, rev=%d\n", bus_type, chip, 256 chiprev); 257 settings = kzalloc(sizeof(*settings), GFP_ATOMIC); 258 if (!settings) 259 return NULL; 260 261 /* start by using the module paramaters */ 262 settings->p2p_enable = !!brcmf_p2p_enable; 263 settings->feature_disable = brcmf_feature_disable; 264 settings->fcmode = brcmf_fcmode; 265 settings->roamoff = !!brcmf_roamoff; 266 #ifdef DEBUG 267 settings->ignore_probe_fail = !!brcmf_ignore_probe_fail; 268 #endif 269 270 if (bus_type == BRCMF_BUSTYPE_SDIO) 271 settings->bus.sdio.txglomsz = brcmf_sdiod_txglomsz; 272 273 /* See if there is any device specific platform data configured */ 274 found = false; 275 if (brcmfmac_pdata) { 276 for (i = 0; i < brcmfmac_pdata->device_count; i++) { 277 device_pd = &brcmfmac_pdata->devices[i]; 278 if ((device_pd->bus_type == bus_type) && 279 (device_pd->id == chip) && 280 ((device_pd->rev == chiprev) || 281 (device_pd->rev == -1))) { 282 brcmf_dbg(INFO, "Platform data for device found\n"); 283 settings->country_codes = 284 device_pd->country_codes; 285 if (device_pd->bus_type == BRCMF_BUSTYPE_SDIO) 286 memcpy(&settings->bus.sdio, 287 &device_pd->bus.sdio, 288 sizeof(settings->bus.sdio)); 289 found = true; 290 break; 291 } 292 } 293 } 294 if ((bus_type == BRCMF_BUSTYPE_SDIO) && (!found)) { 295 /* No platform data for this device. In case of SDIO try OF 296 * (Open Firwmare) Device Tree. 297 */ 298 brcmf_of_probe(dev, &settings->bus.sdio); 299 } 300 return settings; 301 } 302 303 void brcmf_release_module_param(struct brcmf_mp_device *module_param) 304 { 305 kfree(module_param); 306 } 307 308 static int __init brcmf_common_pd_probe(struct platform_device *pdev) 309 { 310 brcmf_dbg(INFO, "Enter\n"); 311 312 brcmfmac_pdata = dev_get_platdata(&pdev->dev); 313 314 if (brcmfmac_pdata->power_on) 315 brcmfmac_pdata->power_on(); 316 317 return 0; 318 } 319 320 static int brcmf_common_pd_remove(struct platform_device *pdev) 321 { 322 brcmf_dbg(INFO, "Enter\n"); 323 324 if (brcmfmac_pdata->power_off) 325 brcmfmac_pdata->power_off(); 326 327 return 0; 328 } 329 330 static struct platform_driver brcmf_pd = { 331 .remove = brcmf_common_pd_remove, 332 .driver = { 333 .name = BRCMFMAC_PDATA_NAME, 334 } 335 }; 336 337 static int __init brcmfmac_module_init(void) 338 { 339 int err; 340 341 /* Initialize debug system first */ 342 brcmf_debugfs_init(); 343 344 /* Get the platform data (if available) for our devices */ 345 err = platform_driver_probe(&brcmf_pd, brcmf_common_pd_probe); 346 if (err == -ENODEV) 347 brcmf_dbg(INFO, "No platform data available.\n"); 348 349 /* Initialize global module paramaters */ 350 brcmf_mp_attach(); 351 352 /* Continue the initialization by registering the different busses */ 353 err = brcmf_core_init(); 354 if (err) { 355 brcmf_debugfs_exit(); 356 if (brcmfmac_pdata) 357 platform_driver_unregister(&brcmf_pd); 358 } 359 360 return err; 361 } 362 363 static void __exit brcmfmac_module_exit(void) 364 { 365 brcmf_core_exit(); 366 if (brcmfmac_pdata) 367 platform_driver_unregister(&brcmf_pd); 368 brcmf_debugfs_exit(); 369 } 370 371 module_init(brcmfmac_module_init); 372 module_exit(brcmfmac_module_exit); 373 374