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); 334 335 return 0; 336 337 out_smd_stop: 338 wcn36xx_smd_stop(wcn); 339 out_free_dxe_ctl: 340 wcn36xx_dxe_free_ctl_blks(wcn); 341 out_free_dxe_pool: 342 wcn36xx_dxe_free_mem_pools(wcn); 343 out_smd_close: 344 wcn36xx_smd_close(wcn); 345 out_err: 346 return ret; 347 } 348 349 static void wcn36xx_stop(struct ieee80211_hw *hw) 350 { 351 struct wcn36xx *wcn = hw->priv; 352 353 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n"); 354 355 mutex_lock(&wcn->scan_lock); 356 if (wcn->scan_req) { 357 struct cfg80211_scan_info scan_info = { 358 .aborted = true, 359 }; 360 361 ieee80211_scan_completed(wcn->hw, &scan_info); 362 } 363 wcn->scan_req = NULL; 364 mutex_unlock(&wcn->scan_lock); 365 366 wcn36xx_debugfs_exit(wcn); 367 wcn36xx_smd_stop(wcn); 368 wcn36xx_dxe_deinit(wcn); 369 wcn36xx_smd_close(wcn); 370 371 wcn36xx_dxe_free_mem_pools(wcn); 372 wcn36xx_dxe_free_ctl_blks(wcn); 373 } 374 375 static void wcn36xx_change_ps(struct wcn36xx *wcn, bool enable) 376 { 377 struct ieee80211_vif *vif = NULL; 378 struct wcn36xx_vif *tmp; 379 380 list_for_each_entry(tmp, &wcn->vif_list, list) { 381 vif = wcn36xx_priv_to_vif(tmp); 382 if (enable && !wcn->sw_scan) { 383 if (vif->bss_conf.ps) /* ps allowed ? */ 384 wcn36xx_pmc_enter_bmps_state(wcn, vif); 385 } else { 386 wcn36xx_pmc_exit_bmps_state(wcn, vif); 387 } 388 } 389 } 390 391 static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch) 392 { 393 struct ieee80211_vif *vif = NULL; 394 struct wcn36xx_vif *tmp; 395 396 list_for_each_entry(tmp, &wcn->vif_list, list) { 397 vif = wcn36xx_priv_to_vif(tmp); 398 wcn36xx_smd_switch_channel(wcn, vif, ch); 399 } 400 } 401 402 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed) 403 { 404 struct wcn36xx *wcn = hw->priv; 405 int ret; 406 407 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed); 408 409 mutex_lock(&wcn->conf_mutex); 410 411 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 412 int ch = WCN36XX_HW_CHANNEL(wcn); 413 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n", 414 ch); 415 416 if (wcn->sw_scan_opchannel == ch && wcn->sw_scan_channel) { 417 /* If channel is the initial operating channel, we may 418 * want to receive/transmit regular data packets, then 419 * simply stop the scan session and exit PS mode. 420 */ 421 if (wcn->sw_scan_channel) 422 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel); 423 if (wcn->sw_scan_init) { 424 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN, 425 wcn->sw_scan_vif); 426 } 427 } else if (wcn->sw_scan) { 428 /* A scan is ongoing, do not change the operating 429 * channel, but start a scan session on the channel. 430 */ 431 if (wcn->sw_scan_channel) 432 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel); 433 if (!wcn->sw_scan_init) { 434 /* This can fail if we are unable to notify the 435 * operating channel. 436 */ 437 ret = wcn36xx_smd_init_scan(wcn, 438 HAL_SYS_MODE_SCAN, 439 wcn->sw_scan_vif); 440 if (ret) { 441 mutex_unlock(&wcn->conf_mutex); 442 return -EIO; 443 } 444 } 445 wcn36xx_smd_start_scan(wcn, ch); 446 } else { 447 wcn36xx_change_opchannel(wcn, ch); 448 } 449 } 450 451 if (changed & IEEE80211_CONF_CHANGE_PS) 452 wcn36xx_change_ps(wcn, hw->conf.flags & IEEE80211_CONF_PS); 453 454 if (changed & IEEE80211_CONF_CHANGE_IDLE) { 455 if (hw->conf.flags & IEEE80211_CONF_IDLE) 456 wcn36xx_smd_enter_imps(wcn); 457 else 458 wcn36xx_smd_exit_imps(wcn); 459 } 460 461 mutex_unlock(&wcn->conf_mutex); 462 463 return 0; 464 } 465 466 static void wcn36xx_configure_filter(struct ieee80211_hw *hw, 467 unsigned int changed, 468 unsigned int *total, u64 multicast) 469 { 470 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp; 471 struct wcn36xx *wcn = hw->priv; 472 struct wcn36xx_vif *tmp; 473 struct ieee80211_vif *vif = NULL; 474 475 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n"); 476 477 mutex_lock(&wcn->conf_mutex); 478 479 *total &= FIF_ALLMULTI; 480 481 fp = (void *)(unsigned long)multicast; 482 list_for_each_entry(tmp, &wcn->vif_list, list) { 483 vif = wcn36xx_priv_to_vif(tmp); 484 485 /* FW handles MC filtering only when connected as STA */ 486 if (*total & FIF_ALLMULTI) 487 wcn36xx_smd_set_mc_list(wcn, vif, NULL); 488 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc) 489 wcn36xx_smd_set_mc_list(wcn, vif, fp); 490 } 491 492 mutex_unlock(&wcn->conf_mutex); 493 kfree(fp); 494 } 495 496 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw, 497 struct netdev_hw_addr_list *mc_list) 498 { 499 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp; 500 struct netdev_hw_addr *ha; 501 502 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n"); 503 fp = kzalloc(sizeof(*fp), GFP_ATOMIC); 504 if (!fp) { 505 wcn36xx_err("Out of memory setting filters.\n"); 506 return 0; 507 } 508 509 fp->mc_addr_count = 0; 510 /* update multicast filtering parameters */ 511 if (netdev_hw_addr_list_count(mc_list) <= 512 WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) { 513 netdev_hw_addr_list_for_each(ha, mc_list) { 514 memcpy(fp->mc_addr[fp->mc_addr_count], 515 ha->addr, ETH_ALEN); 516 fp->mc_addr_count++; 517 } 518 } 519 520 return (u64)(unsigned long)fp; 521 } 522 523 static void wcn36xx_tx(struct ieee80211_hw *hw, 524 struct ieee80211_tx_control *control, 525 struct sk_buff *skb) 526 { 527 struct wcn36xx *wcn = hw->priv; 528 struct wcn36xx_sta *sta_priv = NULL; 529 530 if (control->sta) 531 sta_priv = wcn36xx_sta_to_priv(control->sta); 532 533 if (wcn36xx_start_tx(wcn, sta_priv, skb)) 534 ieee80211_free_txskb(wcn->hw, skb); 535 } 536 537 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 538 struct ieee80211_vif *vif, 539 struct ieee80211_sta *sta, 540 struct ieee80211_key_conf *key_conf) 541 { 542 struct wcn36xx *wcn = hw->priv; 543 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 544 struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL; 545 int ret = 0; 546 u8 key[WLAN_MAX_KEY_LEN]; 547 548 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n"); 549 wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n", 550 cmd, key_conf->cipher, key_conf->keyidx, 551 key_conf->keylen, key_conf->flags); 552 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ", 553 key_conf->key, 554 key_conf->keylen); 555 556 mutex_lock(&wcn->conf_mutex); 557 558 switch (key_conf->cipher) { 559 case WLAN_CIPHER_SUITE_WEP40: 560 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40; 561 break; 562 case WLAN_CIPHER_SUITE_WEP104: 563 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104; 564 break; 565 case WLAN_CIPHER_SUITE_CCMP: 566 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP; 567 break; 568 case WLAN_CIPHER_SUITE_TKIP: 569 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP; 570 break; 571 default: 572 wcn36xx_err("Unsupported key type 0x%x\n", 573 key_conf->cipher); 574 ret = -EOPNOTSUPP; 575 goto out; 576 } 577 578 switch (cmd) { 579 case SET_KEY: 580 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) { 581 /* 582 * Supplicant is sending key in the wrong order: 583 * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b) 584 * but HW expects it to be in the order as described in 585 * IEEE 802.11 spec (see chapter 11.7) like this: 586 * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b) 587 */ 588 memcpy(key, key_conf->key, 16); 589 memcpy(key + 16, key_conf->key + 24, 8); 590 memcpy(key + 24, key_conf->key + 16, 8); 591 } else { 592 memcpy(key, key_conf->key, key_conf->keylen); 593 } 594 595 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) { 596 sta_priv->is_data_encrypted = true; 597 /* Reconfigure bss with encrypt_type */ 598 if (NL80211_IFTYPE_STATION == vif->type) { 599 wcn36xx_smd_config_bss(wcn, 600 vif, 601 sta, 602 sta->addr, 603 true); 604 wcn36xx_smd_config_sta(wcn, vif, sta); 605 } 606 607 wcn36xx_smd_set_stakey(wcn, 608 vif_priv->encrypt_type, 609 key_conf->keyidx, 610 key_conf->keylen, 611 key, 612 get_sta_index(vif, sta_priv)); 613 } else { 614 wcn36xx_smd_set_bsskey(wcn, 615 vif_priv->encrypt_type, 616 vif_priv->bss_index, 617 key_conf->keyidx, 618 key_conf->keylen, 619 key); 620 621 if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) || 622 (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) { 623 list_for_each_entry(sta_priv, 624 &vif_priv->sta_list, list) { 625 sta_priv->is_data_encrypted = true; 626 wcn36xx_smd_set_stakey(wcn, 627 vif_priv->encrypt_type, 628 key_conf->keyidx, 629 key_conf->keylen, 630 key, 631 get_sta_index(vif, sta_priv)); 632 } 633 } 634 } 635 break; 636 case DISABLE_KEY: 637 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) { 638 if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX) 639 wcn36xx_smd_remove_bsskey(wcn, 640 vif_priv->encrypt_type, 641 vif_priv->bss_index, 642 key_conf->keyidx); 643 644 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE; 645 } else { 646 sta_priv->is_data_encrypted = false; 647 /* do not remove key if disassociated */ 648 if (sta_priv->aid) 649 wcn36xx_smd_remove_stakey(wcn, 650 vif_priv->encrypt_type, 651 key_conf->keyidx, 652 get_sta_index(vif, sta_priv)); 653 } 654 break; 655 default: 656 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd); 657 ret = -EOPNOTSUPP; 658 goto out; 659 } 660 661 out: 662 mutex_unlock(&wcn->conf_mutex); 663 664 return ret; 665 } 666 667 static int wcn36xx_hw_scan(struct ieee80211_hw *hw, 668 struct ieee80211_vif *vif, 669 struct ieee80211_scan_request *hw_req) 670 { 671 struct wcn36xx *wcn = hw->priv; 672 673 if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) { 674 /* fallback to mac80211 software scan */ 675 return 1; 676 } 677 678 /* Firmware scan offload is limited to 48 channels, fallback to 679 * software driven scanning otherwise. 680 */ 681 if (hw_req->req.n_channels > 48) { 682 wcn36xx_warn("Offload scan aborted, n_channels=%u", 683 hw_req->req.n_channels); 684 return 1; 685 } 686 687 mutex_lock(&wcn->scan_lock); 688 if (wcn->scan_req) { 689 mutex_unlock(&wcn->scan_lock); 690 return -EBUSY; 691 } 692 693 wcn->scan_aborted = false; 694 wcn->scan_req = &hw_req->req; 695 696 mutex_unlock(&wcn->scan_lock); 697 698 wcn36xx_smd_update_channel_list(wcn, &hw_req->req); 699 return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req); 700 } 701 702 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw, 703 struct ieee80211_vif *vif) 704 { 705 struct wcn36xx *wcn = hw->priv; 706 707 mutex_lock(&wcn->scan_lock); 708 wcn->scan_aborted = true; 709 mutex_unlock(&wcn->scan_lock); 710 711 if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) { 712 /* ieee80211_scan_completed will be called on FW scan 713 * indication */ 714 wcn36xx_smd_stop_hw_scan(wcn); 715 } 716 } 717 718 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw, 719 struct ieee80211_vif *vif, 720 const u8 *mac_addr) 721 { 722 struct wcn36xx *wcn = hw->priv; 723 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 724 725 wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_start"); 726 727 wcn->sw_scan = true; 728 wcn->sw_scan_vif = vif; 729 wcn->sw_scan_channel = 0; 730 if (vif_priv->sta_assoc) 731 wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn); 732 else 733 wcn->sw_scan_opchannel = 0; 734 } 735 736 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw, 737 struct ieee80211_vif *vif) 738 { 739 struct wcn36xx *wcn = hw->priv; 740 741 wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_complete"); 742 743 /* ensure that any scan session is finished */ 744 if (wcn->sw_scan_channel) 745 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel); 746 if (wcn->sw_scan_init) { 747 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN, 748 wcn->sw_scan_vif); 749 } 750 wcn->sw_scan = false; 751 wcn->sw_scan_opchannel = 0; 752 } 753 754 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta, 755 enum nl80211_band band) 756 { 757 int i, size; 758 u16 *rates_table; 759 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 760 u32 rates = sta->supp_rates[band]; 761 762 memset(&sta_priv->supported_rates, 0, 763 sizeof(sta_priv->supported_rates)); 764 sta_priv->supported_rates.op_rate_mode = STA_11n; 765 766 size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates); 767 rates_table = sta_priv->supported_rates.dsss_rates; 768 if (band == NL80211_BAND_2GHZ) { 769 for (i = 0; i < size; i++) { 770 if (rates & 0x01) { 771 rates_table[i] = wcn_2ghz_rates[i].hw_value; 772 rates = rates >> 1; 773 } 774 } 775 } 776 777 size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates); 778 rates_table = sta_priv->supported_rates.ofdm_rates; 779 for (i = 0; i < size; i++) { 780 if (rates & 0x01) { 781 rates_table[i] = wcn_5ghz_rates[i].hw_value; 782 rates = rates >> 1; 783 } 784 } 785 786 if (sta->ht_cap.ht_supported) { 787 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) > 788 sizeof(sta_priv->supported_rates.supported_mcs_set)); 789 memcpy(sta_priv->supported_rates.supported_mcs_set, 790 sta->ht_cap.mcs.rx_mask, 791 sizeof(sta->ht_cap.mcs.rx_mask)); 792 } 793 794 if (sta->vht_cap.vht_supported) { 795 sta_priv->supported_rates.op_rate_mode = STA_11ac; 796 sta_priv->supported_rates.vht_rx_mcs_map = 797 sta->vht_cap.vht_mcs.rx_mcs_map; 798 sta_priv->supported_rates.vht_tx_mcs_map = 799 sta->vht_cap.vht_mcs.tx_mcs_map; 800 } 801 } 802 803 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates) 804 { 805 u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = { 806 HW_RATE_INDEX_6MBPS, 807 HW_RATE_INDEX_9MBPS, 808 HW_RATE_INDEX_12MBPS, 809 HW_RATE_INDEX_18MBPS, 810 HW_RATE_INDEX_24MBPS, 811 HW_RATE_INDEX_36MBPS, 812 HW_RATE_INDEX_48MBPS, 813 HW_RATE_INDEX_54MBPS 814 }; 815 u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = { 816 HW_RATE_INDEX_1MBPS, 817 HW_RATE_INDEX_2MBPS, 818 HW_RATE_INDEX_5_5MBPS, 819 HW_RATE_INDEX_11MBPS 820 }; 821 822 rates->op_rate_mode = STA_11n; 823 memcpy(rates->dsss_rates, dsss_rates, 824 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES); 825 memcpy(rates->ofdm_rates, ofdm_rates, 826 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES); 827 rates->supported_mcs_set[0] = 0xFF; 828 } 829 830 void wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 *rates) 831 { 832 rates->op_rate_mode = STA_11ac; 833 rates->vht_rx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9; 834 rates->vht_tx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9; 835 } 836 837 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw, 838 struct ieee80211_vif *vif, 839 struct ieee80211_bss_conf *bss_conf, 840 u32 changed) 841 { 842 struct wcn36xx *wcn = hw->priv; 843 struct sk_buff *skb = NULL; 844 u16 tim_off, tim_len; 845 enum wcn36xx_hal_link_state link_state; 846 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 847 848 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n", 849 vif, changed); 850 851 mutex_lock(&wcn->conf_mutex); 852 853 if (changed & BSS_CHANGED_BEACON_INFO) { 854 wcn36xx_dbg(WCN36XX_DBG_MAC, 855 "mac bss changed dtim period %d\n", 856 bss_conf->dtim_period); 857 858 vif_priv->dtim_period = bss_conf->dtim_period; 859 } 860 861 if (changed & BSS_CHANGED_BSSID) { 862 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n", 863 bss_conf->bssid); 864 865 if (!is_zero_ether_addr(bss_conf->bssid)) { 866 vif_priv->is_joining = true; 867 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 868 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr, 869 WCN36XX_HAL_LINK_PREASSOC_STATE); 870 wcn36xx_smd_join(wcn, bss_conf->bssid, 871 vif->addr, WCN36XX_HW_CHANNEL(wcn)); 872 wcn36xx_smd_config_bss(wcn, vif, NULL, 873 bss_conf->bssid, false); 874 } else { 875 vif_priv->is_joining = false; 876 wcn36xx_smd_delete_bss(wcn, vif); 877 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr, 878 WCN36XX_HAL_LINK_IDLE_STATE); 879 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE; 880 } 881 } 882 883 if (changed & BSS_CHANGED_SSID) { 884 wcn36xx_dbg(WCN36XX_DBG_MAC, 885 "mac bss changed ssid\n"); 886 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ", 887 bss_conf->ssid, bss_conf->ssid_len); 888 889 vif_priv->ssid.length = bss_conf->ssid_len; 890 memcpy(&vif_priv->ssid.ssid, 891 bss_conf->ssid, 892 bss_conf->ssid_len); 893 } 894 895 if (changed & BSS_CHANGED_ASSOC) { 896 vif_priv->is_joining = false; 897 if (bss_conf->assoc) { 898 struct ieee80211_sta *sta; 899 struct wcn36xx_sta *sta_priv; 900 901 wcn36xx_dbg(WCN36XX_DBG_MAC, 902 "mac assoc bss %pM vif %pM AID=%d\n", 903 bss_conf->bssid, 904 vif->addr, 905 bss_conf->aid); 906 907 vif_priv->sta_assoc = true; 908 909 /* 910 * Holding conf_mutex ensures mutal exclusion with 911 * wcn36xx_sta_remove() and as such ensures that sta 912 * won't be freed while we're operating on it. As such 913 * we do not need to hold the rcu_read_lock(). 914 */ 915 sta = ieee80211_find_sta(vif, bss_conf->bssid); 916 if (!sta) { 917 wcn36xx_err("sta %pM is not found\n", 918 bss_conf->bssid); 919 goto out; 920 } 921 sta_priv = wcn36xx_sta_to_priv(sta); 922 923 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn)); 924 925 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, 926 vif->addr, 927 WCN36XX_HAL_LINK_POSTASSOC_STATE); 928 wcn36xx_smd_config_bss(wcn, vif, sta, 929 bss_conf->bssid, 930 true); 931 sta_priv->aid = bss_conf->aid; 932 /* 933 * config_sta must be called from because this is the 934 * place where AID is available. 935 */ 936 wcn36xx_smd_config_sta(wcn, vif, sta); 937 if (vif->type == NL80211_IFTYPE_STATION) 938 wcn36xx_smd_add_beacon_filter(wcn, vif); 939 wcn36xx_enable_keep_alive_null_packet(wcn, vif); 940 } else { 941 wcn36xx_dbg(WCN36XX_DBG_MAC, 942 "disassociated bss %pM vif %pM AID=%d\n", 943 bss_conf->bssid, 944 vif->addr, 945 bss_conf->aid); 946 vif_priv->sta_assoc = false; 947 wcn36xx_smd_set_link_st(wcn, 948 bss_conf->bssid, 949 vif->addr, 950 WCN36XX_HAL_LINK_IDLE_STATE); 951 } 952 } 953 954 if (changed & BSS_CHANGED_AP_PROBE_RESP) { 955 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n"); 956 skb = ieee80211_proberesp_get(hw, vif); 957 if (!skb) { 958 wcn36xx_err("failed to alloc probereq skb\n"); 959 goto out; 960 } 961 962 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb); 963 dev_kfree_skb(skb); 964 } 965 966 if (changed & BSS_CHANGED_BEACON_ENABLED || 967 changed & BSS_CHANGED_BEACON) { 968 wcn36xx_dbg(WCN36XX_DBG_MAC, 969 "mac bss changed beacon enabled %d\n", 970 bss_conf->enable_beacon); 971 972 if (bss_conf->enable_beacon) { 973 vif_priv->dtim_period = bss_conf->dtim_period; 974 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 975 wcn36xx_smd_config_bss(wcn, vif, NULL, 976 vif->addr, false); 977 skb = ieee80211_beacon_get_tim(hw, vif, &tim_off, 978 &tim_len); 979 if (!skb) { 980 wcn36xx_err("failed to alloc beacon skb\n"); 981 goto out; 982 } 983 wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0); 984 dev_kfree_skb(skb); 985 986 if (vif->type == NL80211_IFTYPE_ADHOC || 987 vif->type == NL80211_IFTYPE_MESH_POINT) 988 link_state = WCN36XX_HAL_LINK_IBSS_STATE; 989 else 990 link_state = WCN36XX_HAL_LINK_AP_STATE; 991 992 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr, 993 link_state); 994 } else { 995 wcn36xx_smd_delete_bss(wcn, vif); 996 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr, 997 WCN36XX_HAL_LINK_IDLE_STATE); 998 } 999 } 1000 out: 1001 1002 mutex_unlock(&wcn->conf_mutex); 1003 } 1004 1005 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */ 1006 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1007 { 1008 struct wcn36xx *wcn = hw->priv; 1009 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value); 1010 1011 mutex_lock(&wcn->conf_mutex); 1012 wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value); 1013 mutex_unlock(&wcn->conf_mutex); 1014 1015 return 0; 1016 } 1017 1018 static void wcn36xx_remove_interface(struct ieee80211_hw *hw, 1019 struct ieee80211_vif *vif) 1020 { 1021 struct wcn36xx *wcn = hw->priv; 1022 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1023 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif); 1024 1025 mutex_lock(&wcn->conf_mutex); 1026 1027 list_del(&vif_priv->list); 1028 wcn36xx_smd_delete_sta_self(wcn, vif->addr); 1029 1030 mutex_unlock(&wcn->conf_mutex); 1031 } 1032 1033 static int wcn36xx_add_interface(struct ieee80211_hw *hw, 1034 struct ieee80211_vif *vif) 1035 { 1036 struct wcn36xx *wcn = hw->priv; 1037 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1038 1039 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n", 1040 vif, vif->type); 1041 1042 if (!(NL80211_IFTYPE_STATION == vif->type || 1043 NL80211_IFTYPE_AP == vif->type || 1044 NL80211_IFTYPE_ADHOC == vif->type || 1045 NL80211_IFTYPE_MESH_POINT == vif->type)) { 1046 wcn36xx_warn("Unsupported interface type requested: %d\n", 1047 vif->type); 1048 return -EOPNOTSUPP; 1049 } 1050 1051 mutex_lock(&wcn->conf_mutex); 1052 1053 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 1054 INIT_LIST_HEAD(&vif_priv->sta_list); 1055 list_add(&vif_priv->list, &wcn->vif_list); 1056 wcn36xx_smd_add_sta_self(wcn, vif); 1057 1058 mutex_unlock(&wcn->conf_mutex); 1059 1060 return 0; 1061 } 1062 1063 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1064 struct ieee80211_sta *sta) 1065 { 1066 struct wcn36xx *wcn = hw->priv; 1067 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1068 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 1069 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n", 1070 vif, sta->addr); 1071 1072 mutex_lock(&wcn->conf_mutex); 1073 1074 spin_lock_init(&sta_priv->ampdu_lock); 1075 sta_priv->vif = vif_priv; 1076 list_add(&sta_priv->list, &vif_priv->sta_list); 1077 1078 /* 1079 * For STA mode HW will be configured on BSS_CHANGED_ASSOC because 1080 * at this stage AID is not available yet. 1081 */ 1082 if (NL80211_IFTYPE_STATION != vif->type) { 1083 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn)); 1084 sta_priv->aid = sta->aid; 1085 wcn36xx_smd_config_sta(wcn, vif, sta); 1086 } 1087 1088 mutex_unlock(&wcn->conf_mutex); 1089 1090 return 0; 1091 } 1092 1093 static int wcn36xx_sta_remove(struct ieee80211_hw *hw, 1094 struct ieee80211_vif *vif, 1095 struct ieee80211_sta *sta) 1096 { 1097 struct wcn36xx *wcn = hw->priv; 1098 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 1099 1100 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n", 1101 vif, sta->addr, sta_priv->sta_index); 1102 1103 mutex_lock(&wcn->conf_mutex); 1104 1105 list_del(&sta_priv->list); 1106 wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index); 1107 sta_priv->vif = NULL; 1108 1109 mutex_unlock(&wcn->conf_mutex); 1110 1111 return 0; 1112 } 1113 1114 #ifdef CONFIG_PM 1115 1116 static struct ieee80211_vif *wcn36xx_get_first_assoc_vif(struct wcn36xx *wcn) 1117 { 1118 struct wcn36xx_vif *vif_priv = NULL; 1119 struct ieee80211_vif *vif = NULL; 1120 1121 list_for_each_entry(vif_priv, &wcn->vif_list, list) { 1122 if (vif_priv->sta_assoc) { 1123 vif = wcn36xx_priv_to_vif(vif_priv); 1124 break; 1125 } 1126 } 1127 return vif; 1128 } 1129 1130 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow) 1131 { 1132 struct wcn36xx *wcn = hw->priv; 1133 struct ieee80211_vif *vif = NULL; 1134 int ret = 0; 1135 1136 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n"); 1137 1138 mutex_lock(&wcn->conf_mutex); 1139 1140 vif = wcn36xx_get_first_assoc_vif(wcn); 1141 if (vif) { 1142 ret = wcn36xx_smd_arp_offload(wcn, vif, true); 1143 if (ret) 1144 goto out; 1145 ret = wcn36xx_smd_ipv6_ns_offload(wcn, vif, true); 1146 if (ret) 1147 goto out; 1148 ret = wcn36xx_smd_gtk_offload(wcn, vif, true); 1149 if (ret) 1150 goto out; 1151 ret = wcn36xx_smd_set_power_params(wcn, true); 1152 if (ret) 1153 goto out; 1154 ret = wcn36xx_smd_wlan_host_suspend_ind(wcn); 1155 } 1156 1157 /* Disable IRQ, we don't want to handle any packet before mac80211 is 1158 * resumed and ready to receive packets. 1159 */ 1160 disable_irq(wcn->tx_irq); 1161 disable_irq(wcn->rx_irq); 1162 1163 out: 1164 mutex_unlock(&wcn->conf_mutex); 1165 return ret; 1166 } 1167 1168 static int wcn36xx_resume(struct ieee80211_hw *hw) 1169 { 1170 struct wcn36xx *wcn = hw->priv; 1171 struct ieee80211_vif *vif = NULL; 1172 1173 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n"); 1174 1175 mutex_lock(&wcn->conf_mutex); 1176 vif = wcn36xx_get_first_assoc_vif(wcn); 1177 if (vif) { 1178 wcn36xx_smd_host_resume(wcn); 1179 wcn36xx_smd_set_power_params(wcn, false); 1180 wcn36xx_smd_gtk_offload_get_info(wcn, vif); 1181 wcn36xx_smd_gtk_offload(wcn, vif, false); 1182 wcn36xx_smd_ipv6_ns_offload(wcn, vif, false); 1183 wcn36xx_smd_arp_offload(wcn, vif, false); 1184 } 1185 1186 enable_irq(wcn->tx_irq); 1187 enable_irq(wcn->rx_irq); 1188 1189 mutex_unlock(&wcn->conf_mutex); 1190 1191 return 0; 1192 } 1193 1194 static void wcn36xx_set_rekey_data(struct ieee80211_hw *hw, 1195 struct ieee80211_vif *vif, 1196 struct cfg80211_gtk_rekey_data *data) 1197 { 1198 struct wcn36xx *wcn = hw->priv; 1199 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1200 1201 mutex_lock(&wcn->conf_mutex); 1202 1203 memcpy(vif_priv->rekey_data.kek, data->kek, NL80211_KEK_LEN); 1204 memcpy(vif_priv->rekey_data.kck, data->kck, NL80211_KCK_LEN); 1205 vif_priv->rekey_data.replay_ctr = 1206 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr)); 1207 vif_priv->rekey_data.valid = true; 1208 1209 mutex_unlock(&wcn->conf_mutex); 1210 } 1211 1212 #endif 1213 1214 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw, 1215 struct ieee80211_vif *vif, 1216 struct ieee80211_ampdu_params *params) 1217 { 1218 struct wcn36xx *wcn = hw->priv; 1219 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta); 1220 struct ieee80211_sta *sta = params->sta; 1221 enum ieee80211_ampdu_mlme_action action = params->action; 1222 u16 tid = params->tid; 1223 u16 *ssn = ¶ms->ssn; 1224 int ret = 0; 1225 int session; 1226 1227 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n", 1228 action, tid); 1229 1230 mutex_lock(&wcn->conf_mutex); 1231 1232 switch (action) { 1233 case IEEE80211_AMPDU_RX_START: 1234 sta_priv->tid = tid; 1235 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0, 1236 get_sta_index(vif, sta_priv)); 1237 if (session < 0) { 1238 ret = session; 1239 goto out; 1240 } 1241 wcn36xx_smd_add_ba(wcn, session); 1242 break; 1243 case IEEE80211_AMPDU_RX_STOP: 1244 wcn36xx_smd_del_ba(wcn, tid, 0, get_sta_index(vif, sta_priv)); 1245 break; 1246 case IEEE80211_AMPDU_TX_START: 1247 spin_lock_bh(&sta_priv->ampdu_lock); 1248 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START; 1249 spin_unlock_bh(&sta_priv->ampdu_lock); 1250 1251 /* Replace the mac80211 ssn with the firmware one */ 1252 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu ssn = %u\n", *ssn); 1253 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid, ssn); 1254 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu fw-ssn = %u\n", *ssn); 1255 1256 /* Start BA session */ 1257 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1, 1258 get_sta_index(vif, sta_priv)); 1259 if (session < 0) { 1260 ret = session; 1261 goto out; 1262 } 1263 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 1264 break; 1265 case IEEE80211_AMPDU_TX_OPERATIONAL: 1266 spin_lock_bh(&sta_priv->ampdu_lock); 1267 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL; 1268 spin_unlock_bh(&sta_priv->ampdu_lock); 1269 1270 break; 1271 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1272 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1273 case IEEE80211_AMPDU_TX_STOP_CONT: 1274 spin_lock_bh(&sta_priv->ampdu_lock); 1275 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE; 1276 spin_unlock_bh(&sta_priv->ampdu_lock); 1277 1278 wcn36xx_smd_del_ba(wcn, tid, 1, get_sta_index(vif, sta_priv)); 1279 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1280 break; 1281 default: 1282 wcn36xx_err("Unknown AMPDU action\n"); 1283 } 1284 1285 out: 1286 mutex_unlock(&wcn->conf_mutex); 1287 1288 return ret; 1289 } 1290 1291 #if IS_ENABLED(CONFIG_IPV6) 1292 static void wcn36xx_ipv6_addr_change(struct ieee80211_hw *hw, 1293 struct ieee80211_vif *vif, 1294 struct inet6_dev *idev) 1295 { 1296 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1297 struct inet6_ifaddr *ifa; 1298 int idx = 0; 1299 1300 memset(vif_priv->tentative_addrs, 0, sizeof(vif_priv->tentative_addrs)); 1301 1302 read_lock_bh(&idev->lock); 1303 list_for_each_entry(ifa, &idev->addr_list, if_list) { 1304 vif_priv->target_ipv6_addrs[idx] = ifa->addr; 1305 if (ifa->flags & IFA_F_TENTATIVE) 1306 __set_bit(idx, vif_priv->tentative_addrs); 1307 idx++; 1308 if (idx >= WCN36XX_HAL_IPV6_OFFLOAD_ADDR_MAX) 1309 break; 1310 wcn36xx_dbg(WCN36XX_DBG_MAC, "%pI6 %s\n", &ifa->addr, 1311 (ifa->flags & IFA_F_TENTATIVE) ? "tentative" : NULL); 1312 } 1313 read_unlock_bh(&idev->lock); 1314 1315 vif_priv->num_target_ipv6_addrs = idx; 1316 } 1317 #endif 1318 1319 static void wcn36xx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1320 u32 queues, bool drop) 1321 { 1322 struct wcn36xx *wcn = hw->priv; 1323 1324 if (wcn36xx_dxe_tx_flush(wcn)) { 1325 wcn36xx_err("Failed to flush hardware tx queues\n"); 1326 } 1327 } 1328 1329 static const struct ieee80211_ops wcn36xx_ops = { 1330 .start = wcn36xx_start, 1331 .stop = wcn36xx_stop, 1332 .add_interface = wcn36xx_add_interface, 1333 .remove_interface = wcn36xx_remove_interface, 1334 #ifdef CONFIG_PM 1335 .suspend = wcn36xx_suspend, 1336 .resume = wcn36xx_resume, 1337 .set_rekey_data = wcn36xx_set_rekey_data, 1338 #endif 1339 .config = wcn36xx_config, 1340 .prepare_multicast = wcn36xx_prepare_multicast, 1341 .configure_filter = wcn36xx_configure_filter, 1342 .tx = wcn36xx_tx, 1343 .set_key = wcn36xx_set_key, 1344 .hw_scan = wcn36xx_hw_scan, 1345 .cancel_hw_scan = wcn36xx_cancel_hw_scan, 1346 .sw_scan_start = wcn36xx_sw_scan_start, 1347 .sw_scan_complete = wcn36xx_sw_scan_complete, 1348 .bss_info_changed = wcn36xx_bss_info_changed, 1349 .set_rts_threshold = wcn36xx_set_rts_threshold, 1350 .sta_add = wcn36xx_sta_add, 1351 .sta_remove = wcn36xx_sta_remove, 1352 .ampdu_action = wcn36xx_ampdu_action, 1353 #if IS_ENABLED(CONFIG_IPV6) 1354 .ipv6_addr_change = wcn36xx_ipv6_addr_change, 1355 #endif 1356 .flush = wcn36xx_flush, 1357 1358 CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd) 1359 }; 1360 1361 static void 1362 wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap *vht_cap) 1363 { 1364 vht_cap->vht_supported = true; 1365 1366 vht_cap->cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 | 1367 IEEE80211_VHT_CAP_SHORT_GI_80 | 1368 IEEE80211_VHT_CAP_RXSTBC_1 | 1369 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 1370 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE | 1371 3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT | 1372 7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT); 1373 1374 vht_cap->vht_mcs.rx_mcs_map = 1375 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 | 1376 IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 | 1377 IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 | 1378 IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 | 1379 IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 | 1380 IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 | 1381 IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 | 1382 IEEE80211_VHT_MCS_NOT_SUPPORTED << 14); 1383 1384 vht_cap->vht_mcs.rx_highest = cpu_to_le16(433); 1385 vht_cap->vht_mcs.tx_highest = vht_cap->vht_mcs.rx_highest; 1386 1387 vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map; 1388 } 1389 1390 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn) 1391 { 1392 static const u32 cipher_suites[] = { 1393 WLAN_CIPHER_SUITE_WEP40, 1394 WLAN_CIPHER_SUITE_WEP104, 1395 WLAN_CIPHER_SUITE_TKIP, 1396 WLAN_CIPHER_SUITE_CCMP, 1397 }; 1398 1399 ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY); 1400 ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION); 1401 ieee80211_hw_set(wcn->hw, SUPPORTS_PS); 1402 ieee80211_hw_set(wcn->hw, SIGNAL_DBM); 1403 ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL); 1404 ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS); 1405 ieee80211_hw_set(wcn->hw, REPORTS_TX_ACK_STATUS); 1406 1407 wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1408 BIT(NL80211_IFTYPE_AP) | 1409 BIT(NL80211_IFTYPE_ADHOC) | 1410 BIT(NL80211_IFTYPE_MESH_POINT); 1411 1412 wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz; 1413 if (wcn->rf_id != RF_IRIS_WCN3620) 1414 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz; 1415 1416 if (wcn->rf_id == RF_IRIS_WCN3680) 1417 wcn36xx_set_ieee80211_vht_caps(&wcn_band_5ghz.vht_cap); 1418 1419 wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS; 1420 wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN; 1421 1422 wcn->hw->wiphy->cipher_suites = cipher_suites; 1423 wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 1424 1425 #ifdef CONFIG_PM 1426 wcn->hw->wiphy->wowlan = &wowlan_support; 1427 #endif 1428 1429 wcn->hw->max_listen_interval = 200; 1430 1431 wcn->hw->queues = 4; 1432 1433 SET_IEEE80211_DEV(wcn->hw, wcn->dev); 1434 1435 wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta); 1436 wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif); 1437 1438 wiphy_ext_feature_set(wcn->hw->wiphy, 1439 NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1440 1441 return 0; 1442 } 1443 1444 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn, 1445 struct platform_device *pdev) 1446 { 1447 struct device_node *mmio_node; 1448 struct device_node *iris_node; 1449 struct resource *res; 1450 int index; 1451 int ret; 1452 1453 /* Set TX IRQ */ 1454 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "tx"); 1455 if (!res) { 1456 wcn36xx_err("failed to get tx_irq\n"); 1457 return -ENOENT; 1458 } 1459 wcn->tx_irq = res->start; 1460 1461 /* Set RX IRQ */ 1462 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "rx"); 1463 if (!res) { 1464 wcn36xx_err("failed to get rx_irq\n"); 1465 return -ENOENT; 1466 } 1467 wcn->rx_irq = res->start; 1468 1469 /* Acquire SMSM tx enable handle */ 1470 wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev, 1471 "tx-enable", &wcn->tx_enable_state_bit); 1472 if (IS_ERR(wcn->tx_enable_state)) { 1473 wcn36xx_err("failed to get tx-enable state\n"); 1474 return PTR_ERR(wcn->tx_enable_state); 1475 } 1476 1477 /* Acquire SMSM tx rings empty handle */ 1478 wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev, 1479 "tx-rings-empty", &wcn->tx_rings_empty_state_bit); 1480 if (IS_ERR(wcn->tx_rings_empty_state)) { 1481 wcn36xx_err("failed to get tx-rings-empty state\n"); 1482 return PTR_ERR(wcn->tx_rings_empty_state); 1483 } 1484 1485 mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0); 1486 if (!mmio_node) { 1487 wcn36xx_err("failed to acquire qcom,mmio reference\n"); 1488 return -EINVAL; 1489 } 1490 1491 wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto"); 1492 1493 /* Map the CCU memory */ 1494 index = of_property_match_string(mmio_node, "reg-names", "ccu"); 1495 wcn->ccu_base = of_iomap(mmio_node, index); 1496 if (!wcn->ccu_base) { 1497 wcn36xx_err("failed to map ccu memory\n"); 1498 ret = -ENOMEM; 1499 goto put_mmio_node; 1500 } 1501 1502 /* Map the DXE memory */ 1503 index = of_property_match_string(mmio_node, "reg-names", "dxe"); 1504 wcn->dxe_base = of_iomap(mmio_node, index); 1505 if (!wcn->dxe_base) { 1506 wcn36xx_err("failed to map dxe memory\n"); 1507 ret = -ENOMEM; 1508 goto unmap_ccu; 1509 } 1510 1511 /* External RF module */ 1512 iris_node = of_get_child_by_name(mmio_node, "iris"); 1513 if (iris_node) { 1514 if (of_device_is_compatible(iris_node, "qcom,wcn3620")) 1515 wcn->rf_id = RF_IRIS_WCN3620; 1516 if (of_device_is_compatible(iris_node, "qcom,wcn3680")) 1517 wcn->rf_id = RF_IRIS_WCN3680; 1518 of_node_put(iris_node); 1519 } 1520 1521 of_node_put(mmio_node); 1522 return 0; 1523 1524 unmap_ccu: 1525 iounmap(wcn->ccu_base); 1526 put_mmio_node: 1527 of_node_put(mmio_node); 1528 return ret; 1529 } 1530 1531 static int wcn36xx_probe(struct platform_device *pdev) 1532 { 1533 struct ieee80211_hw *hw; 1534 struct wcn36xx *wcn; 1535 void *wcnss; 1536 int ret; 1537 const u8 *addr; 1538 1539 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n"); 1540 1541 wcnss = dev_get_drvdata(pdev->dev.parent); 1542 1543 hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops); 1544 if (!hw) { 1545 wcn36xx_err("failed to alloc hw\n"); 1546 ret = -ENOMEM; 1547 goto out_err; 1548 } 1549 platform_set_drvdata(pdev, hw); 1550 wcn = hw->priv; 1551 wcn->hw = hw; 1552 wcn->dev = &pdev->dev; 1553 wcn->first_boot = true; 1554 mutex_init(&wcn->conf_mutex); 1555 mutex_init(&wcn->hal_mutex); 1556 mutex_init(&wcn->scan_lock); 1557 __skb_queue_head_init(&wcn->amsdu); 1558 1559 wcn->hal_buf = devm_kmalloc(wcn->dev, WCN36XX_HAL_BUF_SIZE, GFP_KERNEL); 1560 if (!wcn->hal_buf) { 1561 ret = -ENOMEM; 1562 goto out_wq; 1563 } 1564 1565 ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32)); 1566 if (ret < 0) { 1567 wcn36xx_err("failed to set DMA mask: %d\n", ret); 1568 goto out_wq; 1569 } 1570 1571 wcn->nv_file = WLAN_NV_FILE; 1572 ret = of_property_read_string(wcn->dev->parent->of_node, "firmware-name", &wcn->nv_file); 1573 if (ret < 0 && ret != -EINVAL) { 1574 wcn36xx_err("failed to read \"firmware-name\" property: %d\n", ret); 1575 goto out_wq; 1576 } 1577 1578 wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw); 1579 if (IS_ERR(wcn->smd_channel)) { 1580 wcn36xx_err("failed to open WLAN_CTRL channel\n"); 1581 ret = PTR_ERR(wcn->smd_channel); 1582 goto out_wq; 1583 } 1584 1585 addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret); 1586 if (addr && ret != ETH_ALEN) { 1587 wcn36xx_err("invalid local-mac-address\n"); 1588 ret = -EINVAL; 1589 goto out_destroy_ept; 1590 } else if (addr) { 1591 wcn36xx_info("mac address: %pM\n", addr); 1592 SET_IEEE80211_PERM_ADDR(wcn->hw, addr); 1593 } 1594 1595 ret = wcn36xx_platform_get_resources(wcn, pdev); 1596 if (ret) 1597 goto out_destroy_ept; 1598 1599 wcn36xx_init_ieee80211(wcn); 1600 ret = ieee80211_register_hw(wcn->hw); 1601 if (ret) 1602 goto out_unmap; 1603 1604 return 0; 1605 1606 out_unmap: 1607 iounmap(wcn->ccu_base); 1608 iounmap(wcn->dxe_base); 1609 out_destroy_ept: 1610 rpmsg_destroy_ept(wcn->smd_channel); 1611 out_wq: 1612 ieee80211_free_hw(hw); 1613 out_err: 1614 return ret; 1615 } 1616 1617 static int wcn36xx_remove(struct platform_device *pdev) 1618 { 1619 struct ieee80211_hw *hw = platform_get_drvdata(pdev); 1620 struct wcn36xx *wcn = hw->priv; 1621 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n"); 1622 1623 release_firmware(wcn->nv); 1624 1625 ieee80211_unregister_hw(hw); 1626 1627 qcom_smem_state_put(wcn->tx_enable_state); 1628 qcom_smem_state_put(wcn->tx_rings_empty_state); 1629 1630 rpmsg_destroy_ept(wcn->smd_channel); 1631 1632 iounmap(wcn->dxe_base); 1633 iounmap(wcn->ccu_base); 1634 1635 __skb_queue_purge(&wcn->amsdu); 1636 1637 mutex_destroy(&wcn->hal_mutex); 1638 ieee80211_free_hw(hw); 1639 1640 return 0; 1641 } 1642 1643 static const struct of_device_id wcn36xx_of_match[] = { 1644 { .compatible = "qcom,wcnss-wlan" }, 1645 {} 1646 }; 1647 MODULE_DEVICE_TABLE(of, wcn36xx_of_match); 1648 1649 static struct platform_driver wcn36xx_driver = { 1650 .probe = wcn36xx_probe, 1651 .remove = wcn36xx_remove, 1652 .driver = { 1653 .name = "wcn36xx", 1654 .of_match_table = wcn36xx_of_match, 1655 }, 1656 }; 1657 1658 module_platform_driver(wcn36xx_driver); 1659 1660 MODULE_LICENSE("Dual BSD/GPL"); 1661 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com"); 1662 MODULE_FIRMWARE(WLAN_NV_FILE); 1663