1 /* 2 * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com> 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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 18 19 #include <linux/module.h> 20 #include <linux/firmware.h> 21 #include <linux/platform_device.h> 22 #include <linux/of_address.h> 23 #include <linux/of_device.h> 24 #include <linux/of_irq.h> 25 #include <linux/rpmsg.h> 26 #include <linux/soc/qcom/smem_state.h> 27 #include <linux/soc/qcom/wcnss_ctrl.h> 28 #include <net/ipv6.h> 29 #include "wcn36xx.h" 30 #include "testmode.h" 31 32 unsigned int wcn36xx_dbg_mask; 33 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644); 34 MODULE_PARM_DESC(debug_mask, "Debugging mask"); 35 36 #define CHAN2G(_freq, _idx) { \ 37 .band = NL80211_BAND_2GHZ, \ 38 .center_freq = (_freq), \ 39 .hw_value = (_idx), \ 40 .max_power = 25, \ 41 } 42 43 #define CHAN5G(_freq, _idx, _phy_val) { \ 44 .band = NL80211_BAND_5GHZ, \ 45 .center_freq = (_freq), \ 46 .hw_value = (_phy_val) << HW_VALUE_PHY_SHIFT | HW_VALUE_CHANNEL(_idx), \ 47 .max_power = 25, \ 48 } 49 50 /* The wcn firmware expects channel values to matching 51 * their mnemonic values. So use these for .hw_value. */ 52 static struct ieee80211_channel wcn_2ghz_channels[] = { 53 CHAN2G(2412, 1), /* Channel 1 */ 54 CHAN2G(2417, 2), /* Channel 2 */ 55 CHAN2G(2422, 3), /* Channel 3 */ 56 CHAN2G(2427, 4), /* Channel 4 */ 57 CHAN2G(2432, 5), /* Channel 5 */ 58 CHAN2G(2437, 6), /* Channel 6 */ 59 CHAN2G(2442, 7), /* Channel 7 */ 60 CHAN2G(2447, 8), /* Channel 8 */ 61 CHAN2G(2452, 9), /* Channel 9 */ 62 CHAN2G(2457, 10), /* Channel 10 */ 63 CHAN2G(2462, 11), /* Channel 11 */ 64 CHAN2G(2467, 12), /* Channel 12 */ 65 CHAN2G(2472, 13), /* Channel 13 */ 66 CHAN2G(2484, 14) /* Channel 14 */ 67 68 }; 69 70 static struct ieee80211_channel wcn_5ghz_channels[] = { 71 CHAN5G(5180, 36, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 72 CHAN5G(5200, 40, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 73 CHAN5G(5220, 44, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 74 CHAN5G(5240, 48, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 75 CHAN5G(5260, 52, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 76 CHAN5G(5280, 56, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 77 CHAN5G(5300, 60, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 78 CHAN5G(5320, 64, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 79 CHAN5G(5500, 100, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 80 CHAN5G(5520, 104, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 81 CHAN5G(5540, 108, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 82 CHAN5G(5560, 112, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 83 CHAN5G(5580, 116, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 84 CHAN5G(5600, 120, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 85 CHAN5G(5620, 124, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 86 CHAN5G(5640, 128, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 87 CHAN5G(5660, 132, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 88 CHAN5G(5680, 136, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 89 CHAN5G(5700, 140, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 90 CHAN5G(5720, 144, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 91 CHAN5G(5745, 149, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 92 CHAN5G(5765, 153, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 93 CHAN5G(5785, 157, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 94 CHAN5G(5805, 161, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 95 CHAN5G(5825, 165, 0) 96 }; 97 98 #define RATE(_bitrate, _hw_rate, _flags) { \ 99 .bitrate = (_bitrate), \ 100 .flags = (_flags), \ 101 .hw_value = (_hw_rate), \ 102 .hw_value_short = (_hw_rate) \ 103 } 104 105 static struct ieee80211_rate wcn_2ghz_rates[] = { 106 RATE(10, HW_RATE_INDEX_1MBPS, 0), 107 RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE), 108 RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE), 109 RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE), 110 RATE(60, HW_RATE_INDEX_6MBPS, 0), 111 RATE(90, HW_RATE_INDEX_9MBPS, 0), 112 RATE(120, HW_RATE_INDEX_12MBPS, 0), 113 RATE(180, HW_RATE_INDEX_18MBPS, 0), 114 RATE(240, HW_RATE_INDEX_24MBPS, 0), 115 RATE(360, HW_RATE_INDEX_36MBPS, 0), 116 RATE(480, HW_RATE_INDEX_48MBPS, 0), 117 RATE(540, HW_RATE_INDEX_54MBPS, 0) 118 }; 119 120 static struct ieee80211_rate wcn_5ghz_rates[] = { 121 RATE(60, HW_RATE_INDEX_6MBPS, 0), 122 RATE(90, HW_RATE_INDEX_9MBPS, 0), 123 RATE(120, HW_RATE_INDEX_12MBPS, 0), 124 RATE(180, HW_RATE_INDEX_18MBPS, 0), 125 RATE(240, HW_RATE_INDEX_24MBPS, 0), 126 RATE(360, HW_RATE_INDEX_36MBPS, 0), 127 RATE(480, HW_RATE_INDEX_48MBPS, 0), 128 RATE(540, HW_RATE_INDEX_54MBPS, 0) 129 }; 130 131 static struct ieee80211_supported_band wcn_band_2ghz = { 132 .channels = wcn_2ghz_channels, 133 .n_channels = ARRAY_SIZE(wcn_2ghz_channels), 134 .bitrates = wcn_2ghz_rates, 135 .n_bitrates = ARRAY_SIZE(wcn_2ghz_rates), 136 .ht_cap = { 137 .cap = IEEE80211_HT_CAP_GRN_FLD | 138 IEEE80211_HT_CAP_SGI_20 | 139 IEEE80211_HT_CAP_DSSSCCK40 | 140 IEEE80211_HT_CAP_LSIG_TXOP_PROT | 141 IEEE80211_HT_CAP_SGI_40 | 142 IEEE80211_HT_CAP_SUP_WIDTH_20_40, 143 .ht_supported = true, 144 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 145 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, 146 .mcs = { 147 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, 148 .rx_highest = cpu_to_le16(72), 149 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, 150 } 151 } 152 }; 153 154 static struct ieee80211_supported_band wcn_band_5ghz = { 155 .channels = wcn_5ghz_channels, 156 .n_channels = ARRAY_SIZE(wcn_5ghz_channels), 157 .bitrates = wcn_5ghz_rates, 158 .n_bitrates = ARRAY_SIZE(wcn_5ghz_rates), 159 .ht_cap = { 160 .cap = IEEE80211_HT_CAP_GRN_FLD | 161 IEEE80211_HT_CAP_SGI_20 | 162 IEEE80211_HT_CAP_DSSSCCK40 | 163 IEEE80211_HT_CAP_LSIG_TXOP_PROT | 164 IEEE80211_HT_CAP_SGI_40 | 165 IEEE80211_HT_CAP_SUP_WIDTH_20_40, 166 .ht_supported = true, 167 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 168 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, 169 .mcs = { 170 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, 171 .rx_highest = cpu_to_le16(150), 172 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, 173 } 174 } 175 }; 176 177 #ifdef CONFIG_PM 178 179 static const struct wiphy_wowlan_support wowlan_support = { 180 .flags = WIPHY_WOWLAN_ANY | 181 WIPHY_WOWLAN_MAGIC_PKT | 182 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY 183 }; 184 185 #endif 186 187 static inline u8 get_sta_index(struct ieee80211_vif *vif, 188 struct wcn36xx_sta *sta_priv) 189 { 190 return NL80211_IFTYPE_STATION == vif->type ? 191 sta_priv->bss_sta_index : 192 sta_priv->sta_index; 193 } 194 195 static const char * const wcn36xx_caps_names[] = { 196 "MCC", /* 0 */ 197 "P2P", /* 1 */ 198 "DOT11AC", /* 2 */ 199 "SLM_SESSIONIZATION", /* 3 */ 200 "DOT11AC_OPMODE", /* 4 */ 201 "SAP32STA", /* 5 */ 202 "TDLS", /* 6 */ 203 "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */ 204 "WLANACTIVE_OFFLOAD", /* 8 */ 205 "BEACON_OFFLOAD", /* 9 */ 206 "SCAN_OFFLOAD", /* 10 */ 207 "ROAM_OFFLOAD", /* 11 */ 208 "BCN_MISS_OFFLOAD", /* 12 */ 209 "STA_POWERSAVE", /* 13 */ 210 "STA_ADVANCED_PWRSAVE", /* 14 */ 211 "AP_UAPSD", /* 15 */ 212 "AP_DFS", /* 16 */ 213 "BLOCKACK", /* 17 */ 214 "PHY_ERR", /* 18 */ 215 "BCN_FILTER", /* 19 */ 216 "RTT", /* 20 */ 217 "RATECTRL", /* 21 */ 218 "WOW", /* 22 */ 219 "WLAN_ROAM_SCAN_OFFLOAD", /* 23 */ 220 "SPECULATIVE_PS_POLL", /* 24 */ 221 "SCAN_SCH", /* 25 */ 222 "IBSS_HEARTBEAT_OFFLOAD", /* 26 */ 223 "WLAN_SCAN_OFFLOAD", /* 27 */ 224 "WLAN_PERIODIC_TX_PTRN", /* 28 */ 225 "ADVANCE_TDLS", /* 29 */ 226 "BATCH_SCAN", /* 30 */ 227 "FW_IN_TX_PATH", /* 31 */ 228 "EXTENDED_NSOFFLOAD_SLOT", /* 32 */ 229 "CH_SWITCH_V1", /* 33 */ 230 "HT40_OBSS_SCAN", /* 34 */ 231 "UPDATE_CHANNEL_LIST", /* 35 */ 232 "WLAN_MCADDR_FLT", /* 36 */ 233 "WLAN_CH144", /* 37 */ 234 "NAN", /* 38 */ 235 "TDLS_SCAN_COEXISTENCE", /* 39 */ 236 "LINK_LAYER_STATS_MEAS", /* 40 */ 237 "MU_MIMO", /* 41 */ 238 "EXTENDED_SCAN", /* 42 */ 239 "DYNAMIC_WMM_PS", /* 43 */ 240 "MAC_SPOOFED_SCAN", /* 44 */ 241 "BMU_ERROR_GENERIC_RECOVERY", /* 45 */ 242 "DISA", /* 46 */ 243 "FW_STATS", /* 47 */ 244 "WPS_PRBRSP_TMPL", /* 48 */ 245 "BCN_IE_FLT_DELTA", /* 49 */ 246 "TDLS_OFF_CHANNEL", /* 51 */ 247 "RTT3", /* 52 */ 248 "MGMT_FRAME_LOGGING", /* 53 */ 249 "ENHANCED_TXBD_COMPLETION", /* 54 */ 250 "LOGGING_ENHANCEMENT", /* 55 */ 251 "EXT_SCAN_ENHANCED", /* 56 */ 252 "MEMORY_DUMP_SUPPORTED", /* 57 */ 253 "PER_PKT_STATS_SUPPORTED", /* 58 */ 254 "EXT_LL_STAT", /* 60 */ 255 "WIFI_CONFIG", /* 61 */ 256 "ANTENNA_DIVERSITY_SELECTION", /* 62 */ 257 }; 258 259 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x) 260 { 261 if (x >= ARRAY_SIZE(wcn36xx_caps_names)) 262 return "UNKNOWN"; 263 return wcn36xx_caps_names[x]; 264 } 265 266 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn) 267 { 268 int i; 269 270 for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) { 271 if (get_feat_caps(wcn->fw_feat_caps, i)) 272 wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n", wcn36xx_get_cap_name(i)); 273 } 274 } 275 276 static int wcn36xx_start(struct ieee80211_hw *hw) 277 { 278 struct wcn36xx *wcn = hw->priv; 279 int ret; 280 281 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n"); 282 283 /* SMD initialization */ 284 ret = wcn36xx_smd_open(wcn); 285 if (ret) { 286 wcn36xx_err("Failed to open smd channel: %d\n", ret); 287 goto out_err; 288 } 289 290 /* Allocate memory pools for Mgmt BD headers and Data BD headers */ 291 ret = wcn36xx_dxe_allocate_mem_pools(wcn); 292 if (ret) { 293 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret); 294 goto out_smd_close; 295 } 296 297 ret = wcn36xx_dxe_alloc_ctl_blks(wcn); 298 if (ret) { 299 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret); 300 goto out_free_dxe_pool; 301 } 302 303 ret = wcn36xx_smd_load_nv(wcn); 304 if (ret) { 305 wcn36xx_err("Failed to push NV to chip\n"); 306 goto out_free_dxe_ctl; 307 } 308 309 ret = wcn36xx_smd_start(wcn); 310 if (ret) { 311 wcn36xx_err("Failed to start chip\n"); 312 goto out_free_dxe_ctl; 313 } 314 315 if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) { 316 ret = wcn36xx_smd_feature_caps_exchange(wcn); 317 if (ret) 318 wcn36xx_warn("Exchange feature caps failed\n"); 319 else 320 wcn36xx_feat_caps_info(wcn); 321 } 322 323 /* DMA channel initialization */ 324 ret = wcn36xx_dxe_init(wcn); 325 if (ret) { 326 wcn36xx_err("DXE init failed\n"); 327 goto out_smd_stop; 328 } 329 330 wcn36xx_debugfs_init(wcn); 331 332 INIT_LIST_HEAD(&wcn->vif_list); 333 spin_lock_init(&wcn->dxe_lock); 334 spin_lock_init(&wcn->survey_lock); 335 336 return 0; 337 338 out_smd_stop: 339 wcn36xx_smd_stop(wcn); 340 out_free_dxe_ctl: 341 wcn36xx_dxe_free_ctl_blks(wcn); 342 out_free_dxe_pool: 343 wcn36xx_dxe_free_mem_pools(wcn); 344 out_smd_close: 345 wcn36xx_smd_close(wcn); 346 out_err: 347 return ret; 348 } 349 350 static void wcn36xx_stop(struct ieee80211_hw *hw) 351 { 352 struct wcn36xx *wcn = hw->priv; 353 354 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n"); 355 356 mutex_lock(&wcn->scan_lock); 357 if (wcn->scan_req) { 358 struct cfg80211_scan_info scan_info = { 359 .aborted = true, 360 }; 361 362 ieee80211_scan_completed(wcn->hw, &scan_info); 363 } 364 wcn->scan_req = NULL; 365 mutex_unlock(&wcn->scan_lock); 366 367 wcn36xx_debugfs_exit(wcn); 368 wcn36xx_smd_stop(wcn); 369 wcn36xx_dxe_deinit(wcn); 370 wcn36xx_smd_close(wcn); 371 372 wcn36xx_dxe_free_mem_pools(wcn); 373 wcn36xx_dxe_free_ctl_blks(wcn); 374 } 375 376 static void wcn36xx_change_ps(struct wcn36xx *wcn, bool enable) 377 { 378 struct ieee80211_vif *vif = NULL; 379 struct wcn36xx_vif *tmp; 380 381 list_for_each_entry(tmp, &wcn->vif_list, list) { 382 vif = wcn36xx_priv_to_vif(tmp); 383 if (enable && !wcn->sw_scan) { 384 if (vif->bss_conf.ps) /* ps allowed ? */ 385 wcn36xx_pmc_enter_bmps_state(wcn, vif); 386 } else { 387 wcn36xx_pmc_exit_bmps_state(wcn, vif); 388 } 389 } 390 } 391 392 static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch) 393 { 394 struct ieee80211_vif *vif = NULL; 395 struct wcn36xx_vif *tmp; 396 struct ieee80211_supported_band *band; 397 struct ieee80211_channel *channel = NULL; 398 unsigned long flags; 399 int i, j; 400 401 for (i = 0; i < ARRAY_SIZE(wcn->hw->wiphy->bands); i++) { 402 band = wcn->hw->wiphy->bands[i]; 403 if (!band) 404 break; 405 for (j = 0; j < band->n_channels; j++) { 406 if (HW_VALUE_CHANNEL(band->channels[j].hw_value) == ch) { 407 channel = &band->channels[j]; 408 break; 409 } 410 } 411 if (channel) 412 break; 413 } 414 415 if (!channel) { 416 wcn36xx_err("Cannot tune to channel %d\n", ch); 417 return; 418 } 419 420 spin_lock_irqsave(&wcn->survey_lock, flags); 421 wcn->band = band; 422 wcn->channel = channel; 423 spin_unlock_irqrestore(&wcn->survey_lock, flags); 424 425 list_for_each_entry(tmp, &wcn->vif_list, list) { 426 vif = wcn36xx_priv_to_vif(tmp); 427 wcn36xx_smd_switch_channel(wcn, vif, ch); 428 } 429 430 return; 431 } 432 433 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed) 434 { 435 struct wcn36xx *wcn = hw->priv; 436 int ret; 437 438 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed); 439 440 mutex_lock(&wcn->conf_mutex); 441 442 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 443 int ch = WCN36XX_HW_CHANNEL(wcn); 444 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n", 445 ch); 446 447 if (wcn->sw_scan_opchannel == ch && wcn->sw_scan_channel) { 448 /* If channel is the initial operating channel, we may 449 * want to receive/transmit regular data packets, then 450 * simply stop the scan session and exit PS mode. 451 */ 452 if (wcn->sw_scan_channel) 453 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel); 454 if (wcn->sw_scan_init) { 455 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN, 456 wcn->sw_scan_vif); 457 } 458 } else if (wcn->sw_scan) { 459 /* A scan is ongoing, do not change the operating 460 * channel, but start a scan session on the channel. 461 */ 462 if (wcn->sw_scan_channel) 463 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel); 464 if (!wcn->sw_scan_init) { 465 /* This can fail if we are unable to notify the 466 * operating channel. 467 */ 468 ret = wcn36xx_smd_init_scan(wcn, 469 HAL_SYS_MODE_SCAN, 470 wcn->sw_scan_vif); 471 if (ret) { 472 mutex_unlock(&wcn->conf_mutex); 473 return -EIO; 474 } 475 } 476 wcn36xx_smd_start_scan(wcn, ch); 477 } else { 478 wcn36xx_change_opchannel(wcn, ch); 479 } 480 } 481 482 if (changed & IEEE80211_CONF_CHANGE_PS) 483 wcn36xx_change_ps(wcn, hw->conf.flags & IEEE80211_CONF_PS); 484 485 if (changed & IEEE80211_CONF_CHANGE_IDLE) { 486 if (hw->conf.flags & IEEE80211_CONF_IDLE) 487 wcn36xx_smd_enter_imps(wcn); 488 else 489 wcn36xx_smd_exit_imps(wcn); 490 } 491 492 mutex_unlock(&wcn->conf_mutex); 493 494 return 0; 495 } 496 497 static void wcn36xx_configure_filter(struct ieee80211_hw *hw, 498 unsigned int changed, 499 unsigned int *total, u64 multicast) 500 { 501 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp; 502 struct wcn36xx *wcn = hw->priv; 503 struct wcn36xx_vif *tmp; 504 struct ieee80211_vif *vif = NULL; 505 506 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n"); 507 508 mutex_lock(&wcn->conf_mutex); 509 510 *total &= FIF_ALLMULTI; 511 512 fp = (void *)(unsigned long)multicast; 513 list_for_each_entry(tmp, &wcn->vif_list, list) { 514 vif = wcn36xx_priv_to_vif(tmp); 515 516 /* FW handles MC filtering only when connected as STA */ 517 if (*total & FIF_ALLMULTI) 518 wcn36xx_smd_set_mc_list(wcn, vif, NULL); 519 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc) 520 wcn36xx_smd_set_mc_list(wcn, vif, fp); 521 } 522 523 mutex_unlock(&wcn->conf_mutex); 524 kfree(fp); 525 } 526 527 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw, 528 struct netdev_hw_addr_list *mc_list) 529 { 530 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp; 531 struct netdev_hw_addr *ha; 532 533 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n"); 534 fp = kzalloc(sizeof(*fp), GFP_ATOMIC); 535 if (!fp) { 536 wcn36xx_err("Out of memory setting filters.\n"); 537 return 0; 538 } 539 540 fp->mc_addr_count = 0; 541 /* update multicast filtering parameters */ 542 if (netdev_hw_addr_list_count(mc_list) <= 543 WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) { 544 netdev_hw_addr_list_for_each(ha, mc_list) { 545 memcpy(fp->mc_addr[fp->mc_addr_count], 546 ha->addr, ETH_ALEN); 547 fp->mc_addr_count++; 548 } 549 } 550 551 return (u64)(unsigned long)fp; 552 } 553 554 static void wcn36xx_tx(struct ieee80211_hw *hw, 555 struct ieee80211_tx_control *control, 556 struct sk_buff *skb) 557 { 558 struct wcn36xx *wcn = hw->priv; 559 struct wcn36xx_sta *sta_priv = NULL; 560 561 if (control->sta) 562 sta_priv = wcn36xx_sta_to_priv(control->sta); 563 564 if (wcn36xx_start_tx(wcn, sta_priv, skb)) 565 ieee80211_free_txskb(wcn->hw, skb); 566 } 567 568 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 569 struct ieee80211_vif *vif, 570 struct ieee80211_sta *sta, 571 struct ieee80211_key_conf *key_conf) 572 { 573 struct wcn36xx *wcn = hw->priv; 574 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 575 struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL; 576 int ret = 0; 577 u8 key[WLAN_MAX_KEY_LEN]; 578 579 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n"); 580 wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n", 581 cmd, key_conf->cipher, key_conf->keyidx, 582 key_conf->keylen, key_conf->flags); 583 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ", 584 key_conf->key, 585 key_conf->keylen); 586 587 mutex_lock(&wcn->conf_mutex); 588 589 switch (key_conf->cipher) { 590 case WLAN_CIPHER_SUITE_WEP40: 591 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40; 592 break; 593 case WLAN_CIPHER_SUITE_WEP104: 594 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104; 595 break; 596 case WLAN_CIPHER_SUITE_CCMP: 597 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP; 598 break; 599 case WLAN_CIPHER_SUITE_TKIP: 600 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP; 601 break; 602 default: 603 wcn36xx_err("Unsupported key type 0x%x\n", 604 key_conf->cipher); 605 ret = -EOPNOTSUPP; 606 goto out; 607 } 608 609 switch (cmd) { 610 case SET_KEY: 611 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) { 612 /* 613 * Supplicant is sending key in the wrong order: 614 * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b) 615 * but HW expects it to be in the order as described in 616 * IEEE 802.11 spec (see chapter 11.7) like this: 617 * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b) 618 */ 619 memcpy(key, key_conf->key, 16); 620 memcpy(key + 16, key_conf->key + 24, 8); 621 memcpy(key + 24, key_conf->key + 16, 8); 622 } else { 623 memcpy(key, key_conf->key, key_conf->keylen); 624 } 625 626 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) { 627 sta_priv->is_data_encrypted = true; 628 /* Reconfigure bss with encrypt_type */ 629 if (NL80211_IFTYPE_STATION == vif->type) { 630 wcn36xx_smd_config_bss(wcn, 631 vif, 632 sta, 633 sta->addr, 634 true); 635 wcn36xx_smd_config_sta(wcn, vif, sta); 636 } 637 638 wcn36xx_smd_set_stakey(wcn, 639 vif_priv->encrypt_type, 640 key_conf->keyidx, 641 key_conf->keylen, 642 key, 643 get_sta_index(vif, sta_priv)); 644 } else { 645 wcn36xx_smd_set_bsskey(wcn, 646 vif_priv->encrypt_type, 647 vif_priv->bss_index, 648 key_conf->keyidx, 649 key_conf->keylen, 650 key); 651 652 if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) || 653 (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) { 654 list_for_each_entry(sta_priv, 655 &vif_priv->sta_list, list) { 656 sta_priv->is_data_encrypted = true; 657 wcn36xx_smd_set_stakey(wcn, 658 vif_priv->encrypt_type, 659 key_conf->keyidx, 660 key_conf->keylen, 661 key, 662 get_sta_index(vif, sta_priv)); 663 } 664 } 665 } 666 break; 667 case DISABLE_KEY: 668 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) { 669 if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX) 670 wcn36xx_smd_remove_bsskey(wcn, 671 vif_priv->encrypt_type, 672 vif_priv->bss_index, 673 key_conf->keyidx); 674 675 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE; 676 } else { 677 sta_priv->is_data_encrypted = false; 678 /* do not remove key if disassociated */ 679 if (sta_priv->aid) 680 wcn36xx_smd_remove_stakey(wcn, 681 vif_priv->encrypt_type, 682 key_conf->keyidx, 683 get_sta_index(vif, sta_priv)); 684 } 685 break; 686 default: 687 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd); 688 ret = -EOPNOTSUPP; 689 goto out; 690 } 691 692 out: 693 mutex_unlock(&wcn->conf_mutex); 694 695 return ret; 696 } 697 698 static int wcn36xx_hw_scan(struct ieee80211_hw *hw, 699 struct ieee80211_vif *vif, 700 struct ieee80211_scan_request *hw_req) 701 { 702 struct wcn36xx *wcn = hw->priv; 703 704 if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) { 705 /* fallback to mac80211 software scan */ 706 return 1; 707 } 708 709 /* Firmware scan offload is limited to 48 channels, fallback to 710 * software driven scanning otherwise. 711 */ 712 if (hw_req->req.n_channels > 48) { 713 wcn36xx_warn("Offload scan aborted, n_channels=%u", 714 hw_req->req.n_channels); 715 return 1; 716 } 717 718 mutex_lock(&wcn->scan_lock); 719 if (wcn->scan_req) { 720 mutex_unlock(&wcn->scan_lock); 721 return -EBUSY; 722 } 723 724 wcn->scan_aborted = false; 725 wcn->scan_req = &hw_req->req; 726 727 mutex_unlock(&wcn->scan_lock); 728 729 wcn36xx_smd_update_channel_list(wcn, &hw_req->req); 730 return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req); 731 } 732 733 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw, 734 struct ieee80211_vif *vif) 735 { 736 struct wcn36xx *wcn = hw->priv; 737 738 mutex_lock(&wcn->scan_lock); 739 wcn->scan_aborted = true; 740 mutex_unlock(&wcn->scan_lock); 741 742 if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) { 743 /* ieee80211_scan_completed will be called on FW scan 744 * indication */ 745 wcn36xx_smd_stop_hw_scan(wcn); 746 } 747 } 748 749 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw, 750 struct ieee80211_vif *vif, 751 const u8 *mac_addr) 752 { 753 struct wcn36xx *wcn = hw->priv; 754 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 755 756 wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_start"); 757 758 wcn->sw_scan = true; 759 wcn->sw_scan_vif = vif; 760 wcn->sw_scan_channel = 0; 761 if (vif_priv->sta_assoc) 762 wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn); 763 else 764 wcn->sw_scan_opchannel = 0; 765 } 766 767 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw, 768 struct ieee80211_vif *vif) 769 { 770 struct wcn36xx *wcn = hw->priv; 771 772 wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_complete"); 773 774 /* ensure that any scan session is finished */ 775 if (wcn->sw_scan_channel) 776 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel); 777 if (wcn->sw_scan_init) { 778 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN, 779 wcn->sw_scan_vif); 780 } 781 wcn->sw_scan = false; 782 wcn->sw_scan_opchannel = 0; 783 } 784 785 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta, 786 enum nl80211_band band) 787 { 788 int i, size; 789 u16 *rates_table; 790 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 791 u32 rates = sta->supp_rates[band]; 792 793 memset(&sta_priv->supported_rates, 0, 794 sizeof(sta_priv->supported_rates)); 795 sta_priv->supported_rates.op_rate_mode = STA_11n; 796 797 size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates); 798 rates_table = sta_priv->supported_rates.dsss_rates; 799 if (band == NL80211_BAND_2GHZ) { 800 for (i = 0; i < size; i++) { 801 if (rates & 0x01) { 802 rates_table[i] = wcn_2ghz_rates[i].hw_value; 803 rates = rates >> 1; 804 } 805 } 806 } 807 808 size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates); 809 rates_table = sta_priv->supported_rates.ofdm_rates; 810 for (i = 0; i < size; i++) { 811 if (rates & 0x01) { 812 rates_table[i] = wcn_5ghz_rates[i].hw_value; 813 rates = rates >> 1; 814 } 815 } 816 817 if (sta->ht_cap.ht_supported) { 818 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) > 819 sizeof(sta_priv->supported_rates.supported_mcs_set)); 820 memcpy(sta_priv->supported_rates.supported_mcs_set, 821 sta->ht_cap.mcs.rx_mask, 822 sizeof(sta->ht_cap.mcs.rx_mask)); 823 } 824 825 if (sta->vht_cap.vht_supported) { 826 sta_priv->supported_rates.op_rate_mode = STA_11ac; 827 sta_priv->supported_rates.vht_rx_mcs_map = 828 sta->vht_cap.vht_mcs.rx_mcs_map; 829 sta_priv->supported_rates.vht_tx_mcs_map = 830 sta->vht_cap.vht_mcs.tx_mcs_map; 831 } 832 } 833 834 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates) 835 { 836 u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = { 837 HW_RATE_INDEX_6MBPS, 838 HW_RATE_INDEX_9MBPS, 839 HW_RATE_INDEX_12MBPS, 840 HW_RATE_INDEX_18MBPS, 841 HW_RATE_INDEX_24MBPS, 842 HW_RATE_INDEX_36MBPS, 843 HW_RATE_INDEX_48MBPS, 844 HW_RATE_INDEX_54MBPS 845 }; 846 u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = { 847 HW_RATE_INDEX_1MBPS, 848 HW_RATE_INDEX_2MBPS, 849 HW_RATE_INDEX_5_5MBPS, 850 HW_RATE_INDEX_11MBPS 851 }; 852 853 rates->op_rate_mode = STA_11n; 854 memcpy(rates->dsss_rates, dsss_rates, 855 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES); 856 memcpy(rates->ofdm_rates, ofdm_rates, 857 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES); 858 rates->supported_mcs_set[0] = 0xFF; 859 } 860 861 void wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 *rates) 862 { 863 rates->op_rate_mode = STA_11ac; 864 rates->vht_rx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9; 865 rates->vht_tx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9; 866 } 867 868 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw, 869 struct ieee80211_vif *vif, 870 struct ieee80211_bss_conf *bss_conf, 871 u32 changed) 872 { 873 struct wcn36xx *wcn = hw->priv; 874 struct sk_buff *skb = NULL; 875 u16 tim_off, tim_len; 876 enum wcn36xx_hal_link_state link_state; 877 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 878 879 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n", 880 vif, changed); 881 882 mutex_lock(&wcn->conf_mutex); 883 884 if (changed & BSS_CHANGED_BEACON_INFO) { 885 wcn36xx_dbg(WCN36XX_DBG_MAC, 886 "mac bss changed dtim period %d\n", 887 bss_conf->dtim_period); 888 889 vif_priv->dtim_period = bss_conf->dtim_period; 890 } 891 892 if (changed & BSS_CHANGED_BSSID) { 893 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n", 894 bss_conf->bssid); 895 896 if (!is_zero_ether_addr(bss_conf->bssid)) { 897 vif_priv->is_joining = true; 898 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 899 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr, 900 WCN36XX_HAL_LINK_PREASSOC_STATE); 901 wcn36xx_smd_join(wcn, bss_conf->bssid, 902 vif->addr, WCN36XX_HW_CHANNEL(wcn)); 903 wcn36xx_smd_config_bss(wcn, vif, NULL, 904 bss_conf->bssid, false); 905 } else { 906 vif_priv->is_joining = false; 907 wcn36xx_smd_delete_bss(wcn, vif); 908 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr, 909 WCN36XX_HAL_LINK_IDLE_STATE); 910 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE; 911 } 912 } 913 914 if (changed & BSS_CHANGED_SSID) { 915 wcn36xx_dbg(WCN36XX_DBG_MAC, 916 "mac bss changed ssid\n"); 917 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ", 918 bss_conf->ssid, bss_conf->ssid_len); 919 920 vif_priv->ssid.length = bss_conf->ssid_len; 921 memcpy(&vif_priv->ssid.ssid, 922 bss_conf->ssid, 923 bss_conf->ssid_len); 924 } 925 926 if (changed & BSS_CHANGED_ASSOC) { 927 vif_priv->is_joining = false; 928 if (bss_conf->assoc) { 929 struct ieee80211_sta *sta; 930 struct wcn36xx_sta *sta_priv; 931 932 wcn36xx_dbg(WCN36XX_DBG_MAC, 933 "mac assoc bss %pM vif %pM AID=%d\n", 934 bss_conf->bssid, 935 vif->addr, 936 bss_conf->aid); 937 938 vif_priv->sta_assoc = true; 939 940 /* 941 * Holding conf_mutex ensures mutal exclusion with 942 * wcn36xx_sta_remove() and as such ensures that sta 943 * won't be freed while we're operating on it. As such 944 * we do not need to hold the rcu_read_lock(). 945 */ 946 sta = ieee80211_find_sta(vif, bss_conf->bssid); 947 if (!sta) { 948 wcn36xx_err("sta %pM is not found\n", 949 bss_conf->bssid); 950 goto out; 951 } 952 sta_priv = wcn36xx_sta_to_priv(sta); 953 954 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn)); 955 956 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, 957 vif->addr, 958 WCN36XX_HAL_LINK_POSTASSOC_STATE); 959 wcn36xx_smd_config_bss(wcn, vif, sta, 960 bss_conf->bssid, 961 true); 962 sta_priv->aid = bss_conf->aid; 963 /* 964 * config_sta must be called from because this is the 965 * place where AID is available. 966 */ 967 wcn36xx_smd_config_sta(wcn, vif, sta); 968 if (vif->type == NL80211_IFTYPE_STATION) 969 wcn36xx_smd_add_beacon_filter(wcn, vif); 970 wcn36xx_enable_keep_alive_null_packet(wcn, vif); 971 } else { 972 wcn36xx_dbg(WCN36XX_DBG_MAC, 973 "disassociated bss %pM vif %pM AID=%d\n", 974 bss_conf->bssid, 975 vif->addr, 976 bss_conf->aid); 977 vif_priv->sta_assoc = false; 978 wcn36xx_smd_set_link_st(wcn, 979 bss_conf->bssid, 980 vif->addr, 981 WCN36XX_HAL_LINK_IDLE_STATE); 982 } 983 } 984 985 if (changed & BSS_CHANGED_AP_PROBE_RESP) { 986 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n"); 987 skb = ieee80211_proberesp_get(hw, vif); 988 if (!skb) { 989 wcn36xx_err("failed to alloc probereq skb\n"); 990 goto out; 991 } 992 993 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb); 994 dev_kfree_skb(skb); 995 } 996 997 if (changed & BSS_CHANGED_BEACON_ENABLED || 998 changed & BSS_CHANGED_BEACON) { 999 wcn36xx_dbg(WCN36XX_DBG_MAC, 1000 "mac bss changed beacon enabled %d\n", 1001 bss_conf->enable_beacon); 1002 1003 if (bss_conf->enable_beacon) { 1004 vif_priv->dtim_period = bss_conf->dtim_period; 1005 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 1006 wcn36xx_smd_config_bss(wcn, vif, NULL, 1007 vif->addr, false); 1008 skb = ieee80211_beacon_get_tim(hw, vif, &tim_off, 1009 &tim_len); 1010 if (!skb) { 1011 wcn36xx_err("failed to alloc beacon skb\n"); 1012 goto out; 1013 } 1014 wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0); 1015 dev_kfree_skb(skb); 1016 1017 if (vif->type == NL80211_IFTYPE_ADHOC || 1018 vif->type == NL80211_IFTYPE_MESH_POINT) 1019 link_state = WCN36XX_HAL_LINK_IBSS_STATE; 1020 else 1021 link_state = WCN36XX_HAL_LINK_AP_STATE; 1022 1023 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr, 1024 link_state); 1025 } else { 1026 wcn36xx_smd_delete_bss(wcn, vif); 1027 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr, 1028 WCN36XX_HAL_LINK_IDLE_STATE); 1029 } 1030 } 1031 out: 1032 1033 mutex_unlock(&wcn->conf_mutex); 1034 } 1035 1036 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */ 1037 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1038 { 1039 struct wcn36xx *wcn = hw->priv; 1040 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value); 1041 1042 mutex_lock(&wcn->conf_mutex); 1043 wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value); 1044 mutex_unlock(&wcn->conf_mutex); 1045 1046 return 0; 1047 } 1048 1049 static void wcn36xx_remove_interface(struct ieee80211_hw *hw, 1050 struct ieee80211_vif *vif) 1051 { 1052 struct wcn36xx *wcn = hw->priv; 1053 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1054 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif); 1055 1056 mutex_lock(&wcn->conf_mutex); 1057 1058 list_del(&vif_priv->list); 1059 wcn36xx_smd_delete_sta_self(wcn, vif->addr); 1060 1061 mutex_unlock(&wcn->conf_mutex); 1062 } 1063 1064 static int wcn36xx_add_interface(struct ieee80211_hw *hw, 1065 struct ieee80211_vif *vif) 1066 { 1067 struct wcn36xx *wcn = hw->priv; 1068 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1069 1070 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n", 1071 vif, vif->type); 1072 1073 if (!(NL80211_IFTYPE_STATION == vif->type || 1074 NL80211_IFTYPE_AP == vif->type || 1075 NL80211_IFTYPE_ADHOC == vif->type || 1076 NL80211_IFTYPE_MESH_POINT == vif->type)) { 1077 wcn36xx_warn("Unsupported interface type requested: %d\n", 1078 vif->type); 1079 return -EOPNOTSUPP; 1080 } 1081 1082 mutex_lock(&wcn->conf_mutex); 1083 1084 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 1085 INIT_LIST_HEAD(&vif_priv->sta_list); 1086 list_add(&vif_priv->list, &wcn->vif_list); 1087 wcn36xx_smd_add_sta_self(wcn, vif); 1088 1089 mutex_unlock(&wcn->conf_mutex); 1090 1091 return 0; 1092 } 1093 1094 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1095 struct ieee80211_sta *sta) 1096 { 1097 struct wcn36xx *wcn = hw->priv; 1098 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1099 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 1100 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n", 1101 vif, sta->addr); 1102 1103 mutex_lock(&wcn->conf_mutex); 1104 1105 spin_lock_init(&sta_priv->ampdu_lock); 1106 sta_priv->vif = vif_priv; 1107 list_add(&sta_priv->list, &vif_priv->sta_list); 1108 1109 /* 1110 * For STA mode HW will be configured on BSS_CHANGED_ASSOC because 1111 * at this stage AID is not available yet. 1112 */ 1113 if (NL80211_IFTYPE_STATION != vif->type) { 1114 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn)); 1115 sta_priv->aid = sta->aid; 1116 wcn36xx_smd_config_sta(wcn, vif, sta); 1117 } 1118 1119 mutex_unlock(&wcn->conf_mutex); 1120 1121 return 0; 1122 } 1123 1124 static int wcn36xx_sta_remove(struct ieee80211_hw *hw, 1125 struct ieee80211_vif *vif, 1126 struct ieee80211_sta *sta) 1127 { 1128 struct wcn36xx *wcn = hw->priv; 1129 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 1130 1131 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n", 1132 vif, sta->addr, sta_priv->sta_index); 1133 1134 mutex_lock(&wcn->conf_mutex); 1135 1136 list_del(&sta_priv->list); 1137 wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index); 1138 sta_priv->vif = NULL; 1139 1140 mutex_unlock(&wcn->conf_mutex); 1141 1142 return 0; 1143 } 1144 1145 #ifdef CONFIG_PM 1146 1147 static struct ieee80211_vif *wcn36xx_get_first_assoc_vif(struct wcn36xx *wcn) 1148 { 1149 struct wcn36xx_vif *vif_priv = NULL; 1150 struct ieee80211_vif *vif = NULL; 1151 1152 list_for_each_entry(vif_priv, &wcn->vif_list, list) { 1153 if (vif_priv->sta_assoc) { 1154 vif = wcn36xx_priv_to_vif(vif_priv); 1155 break; 1156 } 1157 } 1158 return vif; 1159 } 1160 1161 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow) 1162 { 1163 struct wcn36xx *wcn = hw->priv; 1164 struct ieee80211_vif *vif = NULL; 1165 int ret = 0; 1166 1167 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n"); 1168 1169 mutex_lock(&wcn->conf_mutex); 1170 1171 vif = wcn36xx_get_first_assoc_vif(wcn); 1172 if (vif) { 1173 ret = wcn36xx_smd_arp_offload(wcn, vif, true); 1174 if (ret) 1175 goto out; 1176 ret = wcn36xx_smd_ipv6_ns_offload(wcn, vif, true); 1177 if (ret) 1178 goto out; 1179 ret = wcn36xx_smd_gtk_offload(wcn, vif, true); 1180 if (ret) 1181 goto out; 1182 ret = wcn36xx_smd_set_power_params(wcn, true); 1183 if (ret) 1184 goto out; 1185 ret = wcn36xx_smd_wlan_host_suspend_ind(wcn); 1186 } 1187 1188 /* Disable IRQ, we don't want to handle any packet before mac80211 is 1189 * resumed and ready to receive packets. 1190 */ 1191 disable_irq(wcn->tx_irq); 1192 disable_irq(wcn->rx_irq); 1193 1194 out: 1195 mutex_unlock(&wcn->conf_mutex); 1196 return ret; 1197 } 1198 1199 static int wcn36xx_resume(struct ieee80211_hw *hw) 1200 { 1201 struct wcn36xx *wcn = hw->priv; 1202 struct ieee80211_vif *vif = NULL; 1203 1204 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n"); 1205 1206 mutex_lock(&wcn->conf_mutex); 1207 vif = wcn36xx_get_first_assoc_vif(wcn); 1208 if (vif) { 1209 wcn36xx_smd_host_resume(wcn); 1210 wcn36xx_smd_set_power_params(wcn, false); 1211 wcn36xx_smd_gtk_offload_get_info(wcn, vif); 1212 wcn36xx_smd_gtk_offload(wcn, vif, false); 1213 wcn36xx_smd_ipv6_ns_offload(wcn, vif, false); 1214 wcn36xx_smd_arp_offload(wcn, vif, false); 1215 } 1216 1217 enable_irq(wcn->tx_irq); 1218 enable_irq(wcn->rx_irq); 1219 1220 mutex_unlock(&wcn->conf_mutex); 1221 1222 return 0; 1223 } 1224 1225 static void wcn36xx_set_rekey_data(struct ieee80211_hw *hw, 1226 struct ieee80211_vif *vif, 1227 struct cfg80211_gtk_rekey_data *data) 1228 { 1229 struct wcn36xx *wcn = hw->priv; 1230 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1231 1232 mutex_lock(&wcn->conf_mutex); 1233 1234 memcpy(vif_priv->rekey_data.kek, data->kek, NL80211_KEK_LEN); 1235 memcpy(vif_priv->rekey_data.kck, data->kck, NL80211_KCK_LEN); 1236 vif_priv->rekey_data.replay_ctr = 1237 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr)); 1238 vif_priv->rekey_data.valid = true; 1239 1240 mutex_unlock(&wcn->conf_mutex); 1241 } 1242 1243 #endif 1244 1245 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw, 1246 struct ieee80211_vif *vif, 1247 struct ieee80211_ampdu_params *params) 1248 { 1249 struct wcn36xx *wcn = hw->priv; 1250 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta); 1251 struct ieee80211_sta *sta = params->sta; 1252 enum ieee80211_ampdu_mlme_action action = params->action; 1253 u16 tid = params->tid; 1254 u16 *ssn = ¶ms->ssn; 1255 int ret = 0; 1256 int session; 1257 1258 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n", 1259 action, tid); 1260 1261 mutex_lock(&wcn->conf_mutex); 1262 1263 switch (action) { 1264 case IEEE80211_AMPDU_RX_START: 1265 sta_priv->tid = tid; 1266 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0, 1267 get_sta_index(vif, sta_priv)); 1268 if (session < 0) { 1269 ret = session; 1270 goto out; 1271 } 1272 wcn36xx_smd_add_ba(wcn, session); 1273 break; 1274 case IEEE80211_AMPDU_RX_STOP: 1275 wcn36xx_smd_del_ba(wcn, tid, 0, get_sta_index(vif, sta_priv)); 1276 break; 1277 case IEEE80211_AMPDU_TX_START: 1278 spin_lock_bh(&sta_priv->ampdu_lock); 1279 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START; 1280 spin_unlock_bh(&sta_priv->ampdu_lock); 1281 1282 /* Replace the mac80211 ssn with the firmware one */ 1283 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu ssn = %u\n", *ssn); 1284 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid, ssn); 1285 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu fw-ssn = %u\n", *ssn); 1286 1287 /* Start BA session */ 1288 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1, 1289 get_sta_index(vif, sta_priv)); 1290 if (session < 0) { 1291 ret = session; 1292 goto out; 1293 } 1294 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 1295 break; 1296 case IEEE80211_AMPDU_TX_OPERATIONAL: 1297 spin_lock_bh(&sta_priv->ampdu_lock); 1298 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL; 1299 spin_unlock_bh(&sta_priv->ampdu_lock); 1300 1301 break; 1302 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1303 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1304 case IEEE80211_AMPDU_TX_STOP_CONT: 1305 spin_lock_bh(&sta_priv->ampdu_lock); 1306 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE; 1307 spin_unlock_bh(&sta_priv->ampdu_lock); 1308 1309 wcn36xx_smd_del_ba(wcn, tid, 1, get_sta_index(vif, sta_priv)); 1310 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1311 break; 1312 default: 1313 wcn36xx_err("Unknown AMPDU action\n"); 1314 } 1315 1316 out: 1317 mutex_unlock(&wcn->conf_mutex); 1318 1319 return ret; 1320 } 1321 1322 #if IS_ENABLED(CONFIG_IPV6) 1323 static void wcn36xx_ipv6_addr_change(struct ieee80211_hw *hw, 1324 struct ieee80211_vif *vif, 1325 struct inet6_dev *idev) 1326 { 1327 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1328 struct inet6_ifaddr *ifa; 1329 int idx = 0; 1330 1331 memset(vif_priv->tentative_addrs, 0, sizeof(vif_priv->tentative_addrs)); 1332 1333 read_lock_bh(&idev->lock); 1334 list_for_each_entry(ifa, &idev->addr_list, if_list) { 1335 vif_priv->target_ipv6_addrs[idx] = ifa->addr; 1336 if (ifa->flags & IFA_F_TENTATIVE) 1337 __set_bit(idx, vif_priv->tentative_addrs); 1338 idx++; 1339 if (idx >= WCN36XX_HAL_IPV6_OFFLOAD_ADDR_MAX) 1340 break; 1341 wcn36xx_dbg(WCN36XX_DBG_MAC, "%pI6 %s\n", &ifa->addr, 1342 (ifa->flags & IFA_F_TENTATIVE) ? "tentative" : NULL); 1343 } 1344 read_unlock_bh(&idev->lock); 1345 1346 vif_priv->num_target_ipv6_addrs = idx; 1347 } 1348 #endif 1349 1350 static void wcn36xx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1351 u32 queues, bool drop) 1352 { 1353 struct wcn36xx *wcn = hw->priv; 1354 1355 if (wcn36xx_dxe_tx_flush(wcn)) { 1356 wcn36xx_err("Failed to flush hardware tx queues\n"); 1357 } 1358 } 1359 1360 static int wcn36xx_get_survey(struct ieee80211_hw *hw, int idx, 1361 struct survey_info *survey) 1362 { 1363 struct wcn36xx *wcn = hw->priv; 1364 struct ieee80211_supported_band *sband; 1365 struct wcn36xx_chan_survey *chan_survey; 1366 int band_idx; 1367 unsigned long flags; 1368 1369 sband = wcn->hw->wiphy->bands[NL80211_BAND_2GHZ]; 1370 band_idx = idx; 1371 if (band_idx >= sband->n_channels) { 1372 band_idx -= sband->n_channels; 1373 sband = wcn->hw->wiphy->bands[NL80211_BAND_5GHZ]; 1374 } 1375 1376 if (!sband || band_idx >= sband->n_channels) 1377 return -ENOENT; 1378 1379 spin_lock_irqsave(&wcn->survey_lock, flags); 1380 1381 chan_survey = &wcn->chan_survey[idx]; 1382 survey->channel = &sband->channels[band_idx]; 1383 survey->noise = chan_survey->rssi - chan_survey->snr; 1384 survey->filled = 0; 1385 1386 if (chan_survey->rssi > -100 && chan_survey->rssi < 0) 1387 survey->filled |= SURVEY_INFO_NOISE_DBM; 1388 1389 if (survey->channel == wcn->channel) 1390 survey->filled |= SURVEY_INFO_IN_USE; 1391 1392 spin_unlock_irqrestore(&wcn->survey_lock, flags); 1393 1394 wcn36xx_dbg(WCN36XX_DBG_MAC, 1395 "ch %d rssi %d snr %d noise %d filled %x freq %d\n", 1396 HW_VALUE_CHANNEL(survey->channel->hw_value), 1397 chan_survey->rssi, chan_survey->snr, survey->noise, 1398 survey->filled, survey->channel->center_freq); 1399 1400 return 0; 1401 } 1402 1403 static const struct ieee80211_ops wcn36xx_ops = { 1404 .start = wcn36xx_start, 1405 .stop = wcn36xx_stop, 1406 .add_interface = wcn36xx_add_interface, 1407 .remove_interface = wcn36xx_remove_interface, 1408 #ifdef CONFIG_PM 1409 .suspend = wcn36xx_suspend, 1410 .resume = wcn36xx_resume, 1411 .set_rekey_data = wcn36xx_set_rekey_data, 1412 #endif 1413 .config = wcn36xx_config, 1414 .prepare_multicast = wcn36xx_prepare_multicast, 1415 .configure_filter = wcn36xx_configure_filter, 1416 .tx = wcn36xx_tx, 1417 .set_key = wcn36xx_set_key, 1418 .hw_scan = wcn36xx_hw_scan, 1419 .cancel_hw_scan = wcn36xx_cancel_hw_scan, 1420 .sw_scan_start = wcn36xx_sw_scan_start, 1421 .sw_scan_complete = wcn36xx_sw_scan_complete, 1422 .bss_info_changed = wcn36xx_bss_info_changed, 1423 .set_rts_threshold = wcn36xx_set_rts_threshold, 1424 .sta_add = wcn36xx_sta_add, 1425 .sta_remove = wcn36xx_sta_remove, 1426 .ampdu_action = wcn36xx_ampdu_action, 1427 #if IS_ENABLED(CONFIG_IPV6) 1428 .ipv6_addr_change = wcn36xx_ipv6_addr_change, 1429 #endif 1430 .flush = wcn36xx_flush, 1431 .get_survey = wcn36xx_get_survey, 1432 1433 CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd) 1434 }; 1435 1436 static void 1437 wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap *vht_cap) 1438 { 1439 vht_cap->vht_supported = true; 1440 1441 vht_cap->cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 | 1442 IEEE80211_VHT_CAP_SHORT_GI_80 | 1443 IEEE80211_VHT_CAP_RXSTBC_1 | 1444 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 1445 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE | 1446 3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT | 1447 7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT); 1448 1449 vht_cap->vht_mcs.rx_mcs_map = 1450 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 | 1451 IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 | 1452 IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 | 1453 IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 | 1454 IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 | 1455 IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 | 1456 IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 | 1457 IEEE80211_VHT_MCS_NOT_SUPPORTED << 14); 1458 1459 vht_cap->vht_mcs.rx_highest = cpu_to_le16(433); 1460 vht_cap->vht_mcs.tx_highest = vht_cap->vht_mcs.rx_highest; 1461 1462 vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map; 1463 } 1464 1465 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn) 1466 { 1467 static const u32 cipher_suites[] = { 1468 WLAN_CIPHER_SUITE_WEP40, 1469 WLAN_CIPHER_SUITE_WEP104, 1470 WLAN_CIPHER_SUITE_TKIP, 1471 WLAN_CIPHER_SUITE_CCMP, 1472 }; 1473 1474 ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY); 1475 ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION); 1476 ieee80211_hw_set(wcn->hw, SUPPORTS_PS); 1477 ieee80211_hw_set(wcn->hw, SIGNAL_DBM); 1478 ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL); 1479 ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS); 1480 ieee80211_hw_set(wcn->hw, REPORTS_TX_ACK_STATUS); 1481 1482 wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1483 BIT(NL80211_IFTYPE_AP) | 1484 BIT(NL80211_IFTYPE_ADHOC) | 1485 BIT(NL80211_IFTYPE_MESH_POINT); 1486 1487 wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz; 1488 if (wcn->rf_id != RF_IRIS_WCN3620) 1489 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz; 1490 1491 if (wcn->rf_id == RF_IRIS_WCN3680) 1492 wcn36xx_set_ieee80211_vht_caps(&wcn_band_5ghz.vht_cap); 1493 1494 wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS; 1495 wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN; 1496 1497 wcn->hw->wiphy->cipher_suites = cipher_suites; 1498 wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 1499 1500 #ifdef CONFIG_PM 1501 wcn->hw->wiphy->wowlan = &wowlan_support; 1502 #endif 1503 1504 wcn->hw->max_listen_interval = 200; 1505 1506 wcn->hw->queues = 4; 1507 1508 SET_IEEE80211_DEV(wcn->hw, wcn->dev); 1509 1510 wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta); 1511 wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif); 1512 1513 wiphy_ext_feature_set(wcn->hw->wiphy, 1514 NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1515 1516 return 0; 1517 } 1518 1519 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn, 1520 struct platform_device *pdev) 1521 { 1522 struct device_node *mmio_node; 1523 struct device_node *iris_node; 1524 int index; 1525 int ret; 1526 1527 /* Set TX IRQ */ 1528 ret = platform_get_irq_byname(pdev, "tx"); 1529 if (ret < 0) 1530 return ret; 1531 wcn->tx_irq = ret; 1532 1533 /* Set RX IRQ */ 1534 ret = platform_get_irq_byname(pdev, "rx"); 1535 if (ret < 0) 1536 return ret; 1537 wcn->rx_irq = ret; 1538 1539 /* Acquire SMSM tx enable handle */ 1540 wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev, 1541 "tx-enable", &wcn->tx_enable_state_bit); 1542 if (IS_ERR(wcn->tx_enable_state)) { 1543 wcn36xx_err("failed to get tx-enable state\n"); 1544 return PTR_ERR(wcn->tx_enable_state); 1545 } 1546 1547 /* Acquire SMSM tx rings empty handle */ 1548 wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev, 1549 "tx-rings-empty", &wcn->tx_rings_empty_state_bit); 1550 if (IS_ERR(wcn->tx_rings_empty_state)) { 1551 wcn36xx_err("failed to get tx-rings-empty state\n"); 1552 return PTR_ERR(wcn->tx_rings_empty_state); 1553 } 1554 1555 mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0); 1556 if (!mmio_node) { 1557 wcn36xx_err("failed to acquire qcom,mmio reference\n"); 1558 return -EINVAL; 1559 } 1560 1561 wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto"); 1562 1563 /* Map the CCU memory */ 1564 index = of_property_match_string(mmio_node, "reg-names", "ccu"); 1565 wcn->ccu_base = of_iomap(mmio_node, index); 1566 if (!wcn->ccu_base) { 1567 wcn36xx_err("failed to map ccu memory\n"); 1568 ret = -ENOMEM; 1569 goto put_mmio_node; 1570 } 1571 1572 /* Map the DXE memory */ 1573 index = of_property_match_string(mmio_node, "reg-names", "dxe"); 1574 wcn->dxe_base = of_iomap(mmio_node, index); 1575 if (!wcn->dxe_base) { 1576 wcn36xx_err("failed to map dxe memory\n"); 1577 ret = -ENOMEM; 1578 goto unmap_ccu; 1579 } 1580 1581 /* External RF module */ 1582 iris_node = of_get_child_by_name(mmio_node, "iris"); 1583 if (iris_node) { 1584 if (of_device_is_compatible(iris_node, "qcom,wcn3620")) 1585 wcn->rf_id = RF_IRIS_WCN3620; 1586 if (of_device_is_compatible(iris_node, "qcom,wcn3660") || 1587 of_device_is_compatible(iris_node, "qcom,wcn3660b")) 1588 wcn->rf_id = RF_IRIS_WCN3660; 1589 if (of_device_is_compatible(iris_node, "qcom,wcn3680")) 1590 wcn->rf_id = RF_IRIS_WCN3680; 1591 of_node_put(iris_node); 1592 } 1593 1594 of_node_put(mmio_node); 1595 return 0; 1596 1597 unmap_ccu: 1598 iounmap(wcn->ccu_base); 1599 put_mmio_node: 1600 of_node_put(mmio_node); 1601 return ret; 1602 } 1603 1604 static int wcn36xx_probe(struct platform_device *pdev) 1605 { 1606 struct ieee80211_hw *hw; 1607 struct wcn36xx *wcn; 1608 void *wcnss; 1609 int ret; 1610 const u8 *addr; 1611 int n_channels; 1612 1613 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n"); 1614 1615 wcnss = dev_get_drvdata(pdev->dev.parent); 1616 1617 hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops); 1618 if (!hw) { 1619 wcn36xx_err("failed to alloc hw\n"); 1620 ret = -ENOMEM; 1621 goto out_err; 1622 } 1623 platform_set_drvdata(pdev, hw); 1624 wcn = hw->priv; 1625 wcn->hw = hw; 1626 wcn->dev = &pdev->dev; 1627 wcn->first_boot = true; 1628 mutex_init(&wcn->conf_mutex); 1629 mutex_init(&wcn->hal_mutex); 1630 mutex_init(&wcn->scan_lock); 1631 __skb_queue_head_init(&wcn->amsdu); 1632 1633 wcn->hal_buf = devm_kmalloc(wcn->dev, WCN36XX_HAL_BUF_SIZE, GFP_KERNEL); 1634 if (!wcn->hal_buf) { 1635 ret = -ENOMEM; 1636 goto out_wq; 1637 } 1638 1639 n_channels = wcn_band_2ghz.n_channels + wcn_band_5ghz.n_channels; 1640 wcn->chan_survey = devm_kmalloc(wcn->dev, n_channels, GFP_KERNEL); 1641 if (!wcn->chan_survey) { 1642 ret = -ENOMEM; 1643 goto out_wq; 1644 } 1645 1646 ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32)); 1647 if (ret < 0) { 1648 wcn36xx_err("failed to set DMA mask: %d\n", ret); 1649 goto out_wq; 1650 } 1651 1652 wcn->nv_file = WLAN_NV_FILE; 1653 ret = of_property_read_string(wcn->dev->parent->of_node, "firmware-name", &wcn->nv_file); 1654 if (ret < 0 && ret != -EINVAL) { 1655 wcn36xx_err("failed to read \"firmware-name\" property: %d\n", ret); 1656 goto out_wq; 1657 } 1658 1659 wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw); 1660 if (IS_ERR(wcn->smd_channel)) { 1661 wcn36xx_err("failed to open WLAN_CTRL channel\n"); 1662 ret = PTR_ERR(wcn->smd_channel); 1663 goto out_wq; 1664 } 1665 1666 addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret); 1667 if (addr && ret != ETH_ALEN) { 1668 wcn36xx_err("invalid local-mac-address\n"); 1669 ret = -EINVAL; 1670 goto out_destroy_ept; 1671 } else if (addr) { 1672 wcn36xx_info("mac address: %pM\n", addr); 1673 SET_IEEE80211_PERM_ADDR(wcn->hw, addr); 1674 } 1675 1676 ret = wcn36xx_platform_get_resources(wcn, pdev); 1677 if (ret) 1678 goto out_destroy_ept; 1679 1680 wcn36xx_init_ieee80211(wcn); 1681 ret = ieee80211_register_hw(wcn->hw); 1682 if (ret) 1683 goto out_unmap; 1684 1685 return 0; 1686 1687 out_unmap: 1688 iounmap(wcn->ccu_base); 1689 iounmap(wcn->dxe_base); 1690 out_destroy_ept: 1691 rpmsg_destroy_ept(wcn->smd_channel); 1692 out_wq: 1693 ieee80211_free_hw(hw); 1694 out_err: 1695 return ret; 1696 } 1697 1698 static int wcn36xx_remove(struct platform_device *pdev) 1699 { 1700 struct ieee80211_hw *hw = platform_get_drvdata(pdev); 1701 struct wcn36xx *wcn = hw->priv; 1702 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n"); 1703 1704 release_firmware(wcn->nv); 1705 1706 ieee80211_unregister_hw(hw); 1707 1708 qcom_smem_state_put(wcn->tx_enable_state); 1709 qcom_smem_state_put(wcn->tx_rings_empty_state); 1710 1711 rpmsg_destroy_ept(wcn->smd_channel); 1712 1713 iounmap(wcn->dxe_base); 1714 iounmap(wcn->ccu_base); 1715 1716 __skb_queue_purge(&wcn->amsdu); 1717 1718 mutex_destroy(&wcn->hal_mutex); 1719 ieee80211_free_hw(hw); 1720 1721 return 0; 1722 } 1723 1724 static const struct of_device_id wcn36xx_of_match[] = { 1725 { .compatible = "qcom,wcnss-wlan" }, 1726 {} 1727 }; 1728 MODULE_DEVICE_TABLE(of, wcn36xx_of_match); 1729 1730 static struct platform_driver wcn36xx_driver = { 1731 .probe = wcn36xx_probe, 1732 .remove = wcn36xx_remove, 1733 .driver = { 1734 .name = "wcn36xx", 1735 .of_match_table = wcn36xx_of_match, 1736 }, 1737 }; 1738 1739 module_platform_driver(wcn36xx_driver); 1740 1741 MODULE_LICENSE("Dual BSD/GPL"); 1742 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com"); 1743 MODULE_FIRMWARE(WLAN_NV_FILE); 1744