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 "wcn36xx.h" 29 #include "testmode.h" 30 31 unsigned int wcn36xx_dbg_mask; 32 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644); 33 MODULE_PARM_DESC(debug_mask, "Debugging mask"); 34 35 #define CHAN2G(_freq, _idx) { \ 36 .band = NL80211_BAND_2GHZ, \ 37 .center_freq = (_freq), \ 38 .hw_value = (_idx), \ 39 .max_power = 25, \ 40 } 41 42 #define CHAN5G(_freq, _idx, _phy_val) { \ 43 .band = NL80211_BAND_5GHZ, \ 44 .center_freq = (_freq), \ 45 .hw_value = (_phy_val) << HW_VALUE_PHY_SHIFT | HW_VALUE_CHANNEL(_idx), \ 46 .max_power = 25, \ 47 } 48 49 /* The wcn firmware expects channel values to matching 50 * their mnemonic values. So use these for .hw_value. */ 51 static struct ieee80211_channel wcn_2ghz_channels[] = { 52 CHAN2G(2412, 1), /* Channel 1 */ 53 CHAN2G(2417, 2), /* Channel 2 */ 54 CHAN2G(2422, 3), /* Channel 3 */ 55 CHAN2G(2427, 4), /* Channel 4 */ 56 CHAN2G(2432, 5), /* Channel 5 */ 57 CHAN2G(2437, 6), /* Channel 6 */ 58 CHAN2G(2442, 7), /* Channel 7 */ 59 CHAN2G(2447, 8), /* Channel 8 */ 60 CHAN2G(2452, 9), /* Channel 9 */ 61 CHAN2G(2457, 10), /* Channel 10 */ 62 CHAN2G(2462, 11), /* Channel 11 */ 63 CHAN2G(2467, 12), /* Channel 12 */ 64 CHAN2G(2472, 13), /* Channel 13 */ 65 CHAN2G(2484, 14) /* Channel 14 */ 66 67 }; 68 69 static struct ieee80211_channel wcn_5ghz_channels[] = { 70 CHAN5G(5180, 36, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 71 CHAN5G(5200, 40, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 72 CHAN5G(5220, 44, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 73 CHAN5G(5240, 48, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 74 CHAN5G(5260, 52, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 75 CHAN5G(5280, 56, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 76 CHAN5G(5300, 60, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 77 CHAN5G(5320, 64, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 78 CHAN5G(5500, 100, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 79 CHAN5G(5520, 104, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 80 CHAN5G(5540, 108, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 81 CHAN5G(5560, 112, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 82 CHAN5G(5580, 116, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 83 CHAN5G(5600, 120, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 84 CHAN5G(5620, 124, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 85 CHAN5G(5640, 128, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 86 CHAN5G(5660, 132, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 87 CHAN5G(5700, 140, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 88 CHAN5G(5745, 149, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 89 CHAN5G(5765, 153, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 90 CHAN5G(5785, 157, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 91 CHAN5G(5805, 161, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 92 CHAN5G(5825, 165, 0) 93 }; 94 95 #define RATE(_bitrate, _hw_rate, _flags) { \ 96 .bitrate = (_bitrate), \ 97 .flags = (_flags), \ 98 .hw_value = (_hw_rate), \ 99 .hw_value_short = (_hw_rate) \ 100 } 101 102 static struct ieee80211_rate wcn_2ghz_rates[] = { 103 RATE(10, HW_RATE_INDEX_1MBPS, 0), 104 RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE), 105 RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE), 106 RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE), 107 RATE(60, HW_RATE_INDEX_6MBPS, 0), 108 RATE(90, HW_RATE_INDEX_9MBPS, 0), 109 RATE(120, HW_RATE_INDEX_12MBPS, 0), 110 RATE(180, HW_RATE_INDEX_18MBPS, 0), 111 RATE(240, HW_RATE_INDEX_24MBPS, 0), 112 RATE(360, HW_RATE_INDEX_36MBPS, 0), 113 RATE(480, HW_RATE_INDEX_48MBPS, 0), 114 RATE(540, HW_RATE_INDEX_54MBPS, 0) 115 }; 116 117 static struct ieee80211_rate wcn_5ghz_rates[] = { 118 RATE(60, HW_RATE_INDEX_6MBPS, 0), 119 RATE(90, HW_RATE_INDEX_9MBPS, 0), 120 RATE(120, HW_RATE_INDEX_12MBPS, 0), 121 RATE(180, HW_RATE_INDEX_18MBPS, 0), 122 RATE(240, HW_RATE_INDEX_24MBPS, 0), 123 RATE(360, HW_RATE_INDEX_36MBPS, 0), 124 RATE(480, HW_RATE_INDEX_48MBPS, 0), 125 RATE(540, HW_RATE_INDEX_54MBPS, 0) 126 }; 127 128 static struct ieee80211_supported_band wcn_band_2ghz = { 129 .channels = wcn_2ghz_channels, 130 .n_channels = ARRAY_SIZE(wcn_2ghz_channels), 131 .bitrates = wcn_2ghz_rates, 132 .n_bitrates = ARRAY_SIZE(wcn_2ghz_rates), 133 .ht_cap = { 134 .cap = IEEE80211_HT_CAP_GRN_FLD | 135 IEEE80211_HT_CAP_SGI_20 | 136 IEEE80211_HT_CAP_DSSSCCK40 | 137 IEEE80211_HT_CAP_LSIG_TXOP_PROT, 138 .ht_supported = true, 139 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 140 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, 141 .mcs = { 142 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, 143 .rx_highest = cpu_to_le16(72), 144 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, 145 } 146 } 147 }; 148 149 static struct ieee80211_supported_band wcn_band_5ghz = { 150 .channels = wcn_5ghz_channels, 151 .n_channels = ARRAY_SIZE(wcn_5ghz_channels), 152 .bitrates = wcn_5ghz_rates, 153 .n_bitrates = ARRAY_SIZE(wcn_5ghz_rates), 154 .ht_cap = { 155 .cap = IEEE80211_HT_CAP_GRN_FLD | 156 IEEE80211_HT_CAP_SGI_20 | 157 IEEE80211_HT_CAP_DSSSCCK40 | 158 IEEE80211_HT_CAP_LSIG_TXOP_PROT | 159 IEEE80211_HT_CAP_SGI_40 | 160 IEEE80211_HT_CAP_SUP_WIDTH_20_40, 161 .ht_supported = true, 162 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 163 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, 164 .mcs = { 165 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, 166 .rx_highest = cpu_to_le16(150), 167 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, 168 } 169 } 170 }; 171 172 #ifdef CONFIG_PM 173 174 static const struct wiphy_wowlan_support wowlan_support = { 175 .flags = WIPHY_WOWLAN_ANY 176 }; 177 178 #endif 179 180 static inline u8 get_sta_index(struct ieee80211_vif *vif, 181 struct wcn36xx_sta *sta_priv) 182 { 183 return NL80211_IFTYPE_STATION == vif->type ? 184 sta_priv->bss_sta_index : 185 sta_priv->sta_index; 186 } 187 188 static const char * const wcn36xx_caps_names[] = { 189 "MCC", /* 0 */ 190 "P2P", /* 1 */ 191 "DOT11AC", /* 2 */ 192 "SLM_SESSIONIZATION", /* 3 */ 193 "DOT11AC_OPMODE", /* 4 */ 194 "SAP32STA", /* 5 */ 195 "TDLS", /* 6 */ 196 "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */ 197 "WLANACTIVE_OFFLOAD", /* 8 */ 198 "BEACON_OFFLOAD", /* 9 */ 199 "SCAN_OFFLOAD", /* 10 */ 200 "ROAM_OFFLOAD", /* 11 */ 201 "BCN_MISS_OFFLOAD", /* 12 */ 202 "STA_POWERSAVE", /* 13 */ 203 "STA_ADVANCED_PWRSAVE", /* 14 */ 204 "AP_UAPSD", /* 15 */ 205 "AP_DFS", /* 16 */ 206 "BLOCKACK", /* 17 */ 207 "PHY_ERR", /* 18 */ 208 "BCN_FILTER", /* 19 */ 209 "RTT", /* 20 */ 210 "RATECTRL", /* 21 */ 211 "WOW", /* 22 */ 212 "WLAN_ROAM_SCAN_OFFLOAD", /* 23 */ 213 "SPECULATIVE_PS_POLL", /* 24 */ 214 "SCAN_SCH", /* 25 */ 215 "IBSS_HEARTBEAT_OFFLOAD", /* 26 */ 216 "WLAN_SCAN_OFFLOAD", /* 27 */ 217 "WLAN_PERIODIC_TX_PTRN", /* 28 */ 218 "ADVANCE_TDLS", /* 29 */ 219 "BATCH_SCAN", /* 30 */ 220 "FW_IN_TX_PATH", /* 31 */ 221 "EXTENDED_NSOFFLOAD_SLOT", /* 32 */ 222 "CH_SWITCH_V1", /* 33 */ 223 "HT40_OBSS_SCAN", /* 34 */ 224 "UPDATE_CHANNEL_LIST", /* 35 */ 225 "WLAN_MCADDR_FLT", /* 36 */ 226 "WLAN_CH144", /* 37 */ 227 "NAN", /* 38 */ 228 "TDLS_SCAN_COEXISTENCE", /* 39 */ 229 "LINK_LAYER_STATS_MEAS", /* 40 */ 230 "MU_MIMO", /* 41 */ 231 "EXTENDED_SCAN", /* 42 */ 232 "DYNAMIC_WMM_PS", /* 43 */ 233 "MAC_SPOOFED_SCAN", /* 44 */ 234 "BMU_ERROR_GENERIC_RECOVERY", /* 45 */ 235 "DISA", /* 46 */ 236 "FW_STATS", /* 47 */ 237 "WPS_PRBRSP_TMPL", /* 48 */ 238 "BCN_IE_FLT_DELTA", /* 49 */ 239 "TDLS_OFF_CHANNEL", /* 51 */ 240 "RTT3", /* 52 */ 241 "MGMT_FRAME_LOGGING", /* 53 */ 242 "ENHANCED_TXBD_COMPLETION", /* 54 */ 243 "LOGGING_ENHANCEMENT", /* 55 */ 244 "EXT_SCAN_ENHANCED", /* 56 */ 245 "MEMORY_DUMP_SUPPORTED", /* 57 */ 246 "PER_PKT_STATS_SUPPORTED", /* 58 */ 247 "EXT_LL_STAT", /* 60 */ 248 "WIFI_CONFIG", /* 61 */ 249 "ANTENNA_DIVERSITY_SELECTION", /* 62 */ 250 }; 251 252 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x) 253 { 254 if (x >= ARRAY_SIZE(wcn36xx_caps_names)) 255 return "UNKNOWN"; 256 return wcn36xx_caps_names[x]; 257 } 258 259 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn) 260 { 261 int i; 262 263 for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) { 264 if (get_feat_caps(wcn->fw_feat_caps, i)) 265 wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n", wcn36xx_get_cap_name(i)); 266 } 267 } 268 269 static int wcn36xx_start(struct ieee80211_hw *hw) 270 { 271 struct wcn36xx *wcn = hw->priv; 272 int ret; 273 274 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n"); 275 276 /* SMD initialization */ 277 ret = wcn36xx_smd_open(wcn); 278 if (ret) { 279 wcn36xx_err("Failed to open smd channel: %d\n", ret); 280 goto out_err; 281 } 282 283 /* Allocate memory pools for Mgmt BD headers and Data BD headers */ 284 ret = wcn36xx_dxe_allocate_mem_pools(wcn); 285 if (ret) { 286 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret); 287 goto out_smd_close; 288 } 289 290 ret = wcn36xx_dxe_alloc_ctl_blks(wcn); 291 if (ret) { 292 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret); 293 goto out_free_dxe_pool; 294 } 295 296 wcn->hal_buf = kmalloc(WCN36XX_HAL_BUF_SIZE, GFP_KERNEL); 297 if (!wcn->hal_buf) { 298 wcn36xx_err("Failed to allocate smd buf\n"); 299 ret = -ENOMEM; 300 goto out_free_dxe_ctl; 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_smd_buf; 307 } 308 309 ret = wcn36xx_smd_start(wcn); 310 if (ret) { 311 wcn36xx_err("Failed to start chip\n"); 312 goto out_free_smd_buf; 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_smd_buf: 340 kfree(wcn->hal_buf); 341 out_free_dxe_ctl: 342 wcn36xx_dxe_free_ctl_blks(wcn); 343 out_free_dxe_pool: 344 wcn36xx_dxe_free_mem_pools(wcn); 345 out_smd_close: 346 wcn36xx_smd_close(wcn); 347 out_err: 348 return ret; 349 } 350 351 static void wcn36xx_stop(struct ieee80211_hw *hw) 352 { 353 struct wcn36xx *wcn = hw->priv; 354 355 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n"); 356 357 mutex_lock(&wcn->scan_lock); 358 if (wcn->scan_req) { 359 struct cfg80211_scan_info scan_info = { 360 .aborted = true, 361 }; 362 363 ieee80211_scan_completed(wcn->hw, &scan_info); 364 } 365 wcn->scan_req = NULL; 366 mutex_unlock(&wcn->scan_lock); 367 368 wcn36xx_debugfs_exit(wcn); 369 wcn36xx_smd_stop(wcn); 370 wcn36xx_dxe_deinit(wcn); 371 wcn36xx_smd_close(wcn); 372 373 wcn36xx_dxe_free_mem_pools(wcn); 374 wcn36xx_dxe_free_ctl_blks(wcn); 375 376 kfree(wcn->hal_buf); 377 } 378 379 static void wcn36xx_change_ps(struct wcn36xx *wcn, bool enable) 380 { 381 struct ieee80211_vif *vif = NULL; 382 struct wcn36xx_vif *tmp; 383 384 list_for_each_entry(tmp, &wcn->vif_list, list) { 385 vif = wcn36xx_priv_to_vif(tmp); 386 if (enable && !wcn->sw_scan) { 387 if (vif->bss_conf.ps) /* ps allowed ? */ 388 wcn36xx_pmc_enter_bmps_state(wcn, vif); 389 } else { 390 wcn36xx_pmc_exit_bmps_state(wcn, vif); 391 } 392 } 393 } 394 395 static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch) 396 { 397 struct ieee80211_vif *vif = NULL; 398 struct wcn36xx_vif *tmp; 399 400 list_for_each_entry(tmp, &wcn->vif_list, list) { 401 vif = wcn36xx_priv_to_vif(tmp); 402 wcn36xx_smd_switch_channel(wcn, vif, ch); 403 } 404 } 405 406 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed) 407 { 408 struct wcn36xx *wcn = hw->priv; 409 410 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed); 411 412 mutex_lock(&wcn->conf_mutex); 413 414 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 415 int ch = WCN36XX_HW_CHANNEL(wcn); 416 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n", 417 ch); 418 419 if (wcn->sw_scan_opchannel == ch) { 420 /* If channel is the initial operating channel, we may 421 * want to receive/transmit regular data packets, then 422 * simply stop the scan session and exit PS mode. 423 */ 424 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN, 425 wcn->sw_scan_vif); 426 } else if (wcn->sw_scan) { 427 /* A scan is ongoing, do not change the operating 428 * channel, but start a scan session on the channel. 429 */ 430 wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN, 431 wcn->sw_scan_vif); 432 wcn36xx_smd_start_scan(wcn, ch); 433 } else { 434 wcn36xx_change_opchannel(wcn, ch); 435 } 436 } 437 438 if (changed & IEEE80211_CONF_CHANGE_PS) 439 wcn36xx_change_ps(wcn, hw->conf.flags & IEEE80211_CONF_PS); 440 441 mutex_unlock(&wcn->conf_mutex); 442 443 return 0; 444 } 445 446 static void wcn36xx_configure_filter(struct ieee80211_hw *hw, 447 unsigned int changed, 448 unsigned int *total, u64 multicast) 449 { 450 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp; 451 struct wcn36xx *wcn = hw->priv; 452 struct wcn36xx_vif *tmp; 453 struct ieee80211_vif *vif = NULL; 454 455 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n"); 456 457 mutex_lock(&wcn->conf_mutex); 458 459 *total &= FIF_ALLMULTI; 460 461 fp = (void *)(unsigned long)multicast; 462 list_for_each_entry(tmp, &wcn->vif_list, list) { 463 vif = wcn36xx_priv_to_vif(tmp); 464 465 /* FW handles MC filtering only when connected as STA */ 466 if (*total & FIF_ALLMULTI) 467 wcn36xx_smd_set_mc_list(wcn, vif, NULL); 468 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc) 469 wcn36xx_smd_set_mc_list(wcn, vif, fp); 470 } 471 472 mutex_unlock(&wcn->conf_mutex); 473 kfree(fp); 474 } 475 476 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw, 477 struct netdev_hw_addr_list *mc_list) 478 { 479 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp; 480 struct netdev_hw_addr *ha; 481 482 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n"); 483 fp = kzalloc(sizeof(*fp), GFP_ATOMIC); 484 if (!fp) { 485 wcn36xx_err("Out of memory setting filters.\n"); 486 return 0; 487 } 488 489 fp->mc_addr_count = 0; 490 /* update multicast filtering parameters */ 491 if (netdev_hw_addr_list_count(mc_list) <= 492 WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) { 493 netdev_hw_addr_list_for_each(ha, mc_list) { 494 memcpy(fp->mc_addr[fp->mc_addr_count], 495 ha->addr, ETH_ALEN); 496 fp->mc_addr_count++; 497 } 498 } 499 500 return (u64)(unsigned long)fp; 501 } 502 503 static void wcn36xx_tx(struct ieee80211_hw *hw, 504 struct ieee80211_tx_control *control, 505 struct sk_buff *skb) 506 { 507 struct wcn36xx *wcn = hw->priv; 508 struct wcn36xx_sta *sta_priv = NULL; 509 510 if (control->sta) 511 sta_priv = wcn36xx_sta_to_priv(control->sta); 512 513 if (wcn36xx_start_tx(wcn, sta_priv, skb)) 514 ieee80211_free_txskb(wcn->hw, skb); 515 } 516 517 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 518 struct ieee80211_vif *vif, 519 struct ieee80211_sta *sta, 520 struct ieee80211_key_conf *key_conf) 521 { 522 struct wcn36xx *wcn = hw->priv; 523 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 524 struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL; 525 int ret = 0; 526 u8 key[WLAN_MAX_KEY_LEN]; 527 528 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n"); 529 wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n", 530 cmd, key_conf->cipher, key_conf->keyidx, 531 key_conf->keylen, key_conf->flags); 532 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ", 533 key_conf->key, 534 key_conf->keylen); 535 536 mutex_lock(&wcn->conf_mutex); 537 538 switch (key_conf->cipher) { 539 case WLAN_CIPHER_SUITE_WEP40: 540 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40; 541 break; 542 case WLAN_CIPHER_SUITE_WEP104: 543 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104; 544 break; 545 case WLAN_CIPHER_SUITE_CCMP: 546 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP; 547 break; 548 case WLAN_CIPHER_SUITE_TKIP: 549 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP; 550 break; 551 default: 552 wcn36xx_err("Unsupported key type 0x%x\n", 553 key_conf->cipher); 554 ret = -EOPNOTSUPP; 555 goto out; 556 } 557 558 switch (cmd) { 559 case SET_KEY: 560 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) { 561 /* 562 * Supplicant is sending key in the wrong order: 563 * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b) 564 * but HW expects it to be in the order as described in 565 * IEEE 802.11 spec (see chapter 11.7) like this: 566 * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b) 567 */ 568 memcpy(key, key_conf->key, 16); 569 memcpy(key + 16, key_conf->key + 24, 8); 570 memcpy(key + 24, key_conf->key + 16, 8); 571 } else { 572 memcpy(key, key_conf->key, key_conf->keylen); 573 } 574 575 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) { 576 sta_priv->is_data_encrypted = true; 577 /* Reconfigure bss with encrypt_type */ 578 if (NL80211_IFTYPE_STATION == vif->type) 579 wcn36xx_smd_config_bss(wcn, 580 vif, 581 sta, 582 sta->addr, 583 true); 584 585 wcn36xx_smd_set_stakey(wcn, 586 vif_priv->encrypt_type, 587 key_conf->keyidx, 588 key_conf->keylen, 589 key, 590 get_sta_index(vif, sta_priv)); 591 } else { 592 wcn36xx_smd_set_bsskey(wcn, 593 vif_priv->encrypt_type, 594 vif_priv->bss_index, 595 key_conf->keyidx, 596 key_conf->keylen, 597 key); 598 599 if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) || 600 (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) { 601 list_for_each_entry(sta_priv, 602 &vif_priv->sta_list, list) { 603 sta_priv->is_data_encrypted = true; 604 wcn36xx_smd_set_stakey(wcn, 605 vif_priv->encrypt_type, 606 key_conf->keyidx, 607 key_conf->keylen, 608 key, 609 get_sta_index(vif, sta_priv)); 610 } 611 } 612 } 613 /* FIXME: Only enable bmps support when encryption is enabled. 614 * For any reasons, when connected to open/no-security BSS, 615 * the wcn36xx controller in bmps mode does not forward 616 * 'wake-up' beacons despite AP sends DTIM with station AID. 617 * It could be due to a firmware issue or to the way driver 618 * configure the station. 619 */ 620 if (vif->type == NL80211_IFTYPE_STATION) 621 vif_priv->allow_bmps = true; 622 break; 623 case DISABLE_KEY: 624 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) { 625 if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX) 626 wcn36xx_smd_remove_bsskey(wcn, 627 vif_priv->encrypt_type, 628 vif_priv->bss_index, 629 key_conf->keyidx); 630 631 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE; 632 } else { 633 sta_priv->is_data_encrypted = false; 634 /* do not remove key if disassociated */ 635 if (sta_priv->aid) 636 wcn36xx_smd_remove_stakey(wcn, 637 vif_priv->encrypt_type, 638 key_conf->keyidx, 639 get_sta_index(vif, sta_priv)); 640 } 641 break; 642 default: 643 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd); 644 ret = -EOPNOTSUPP; 645 goto out; 646 } 647 648 out: 649 mutex_unlock(&wcn->conf_mutex); 650 651 return ret; 652 } 653 654 static int wcn36xx_hw_scan(struct ieee80211_hw *hw, 655 struct ieee80211_vif *vif, 656 struct ieee80211_scan_request *hw_req) 657 { 658 struct wcn36xx *wcn = hw->priv; 659 int i; 660 661 if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) { 662 /* fallback to mac80211 software scan */ 663 return 1; 664 } 665 666 /* For unknown reason, the hardware offloaded scan only works with 667 * 2.4Ghz channels, fallback to software scan in other cases. 668 */ 669 for (i = 0; i < hw_req->req.n_channels; i++) { 670 if (hw_req->req.channels[i]->band != NL80211_BAND_2GHZ) 671 return 1; 672 } 673 674 mutex_lock(&wcn->scan_lock); 675 if (wcn->scan_req) { 676 mutex_unlock(&wcn->scan_lock); 677 return -EBUSY; 678 } 679 680 wcn->scan_aborted = false; 681 wcn->scan_req = &hw_req->req; 682 683 mutex_unlock(&wcn->scan_lock); 684 685 return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req); 686 } 687 688 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw, 689 struct ieee80211_vif *vif) 690 { 691 struct wcn36xx *wcn = hw->priv; 692 693 mutex_lock(&wcn->scan_lock); 694 wcn->scan_aborted = true; 695 mutex_unlock(&wcn->scan_lock); 696 697 if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) { 698 /* ieee80211_scan_completed will be called on FW scan 699 * indication */ 700 wcn36xx_smd_stop_hw_scan(wcn); 701 } 702 } 703 704 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw, 705 struct ieee80211_vif *vif, 706 const u8 *mac_addr) 707 { 708 struct wcn36xx *wcn = hw->priv; 709 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 710 711 wcn->sw_scan = true; 712 wcn->sw_scan_vif = vif; 713 if (vif_priv->sta_assoc) 714 wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn); 715 else 716 wcn->sw_scan_opchannel = 0; 717 } 718 719 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw, 720 struct ieee80211_vif *vif) 721 { 722 struct wcn36xx *wcn = hw->priv; 723 724 /* ensure that any scan session is finished */ 725 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN, wcn->sw_scan_vif); 726 wcn->sw_scan = false; 727 wcn->sw_scan_opchannel = 0; 728 } 729 730 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta, 731 enum nl80211_band band) 732 { 733 int i, size; 734 u16 *rates_table; 735 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 736 u32 rates = sta->supp_rates[band]; 737 738 memset(&sta_priv->supported_rates, 0, 739 sizeof(sta_priv->supported_rates)); 740 sta_priv->supported_rates.op_rate_mode = STA_11n; 741 742 size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates); 743 rates_table = sta_priv->supported_rates.dsss_rates; 744 if (band == NL80211_BAND_2GHZ) { 745 for (i = 0; i < size; i++) { 746 if (rates & 0x01) { 747 rates_table[i] = wcn_2ghz_rates[i].hw_value; 748 rates = rates >> 1; 749 } 750 } 751 } 752 753 size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates); 754 rates_table = sta_priv->supported_rates.ofdm_rates; 755 for (i = 0; i < size; i++) { 756 if (rates & 0x01) { 757 rates_table[i] = wcn_5ghz_rates[i].hw_value; 758 rates = rates >> 1; 759 } 760 } 761 762 if (sta->ht_cap.ht_supported) { 763 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) > 764 sizeof(sta_priv->supported_rates.supported_mcs_set)); 765 memcpy(sta_priv->supported_rates.supported_mcs_set, 766 sta->ht_cap.mcs.rx_mask, 767 sizeof(sta->ht_cap.mcs.rx_mask)); 768 } 769 770 if (sta->vht_cap.vht_supported) { 771 sta_priv->supported_rates.op_rate_mode = STA_11ac; 772 sta_priv->supported_rates.vht_rx_mcs_map = 773 sta->vht_cap.vht_mcs.rx_mcs_map; 774 sta_priv->supported_rates.vht_tx_mcs_map = 775 sta->vht_cap.vht_mcs.tx_mcs_map; 776 } 777 } 778 779 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates) 780 { 781 u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = { 782 HW_RATE_INDEX_6MBPS, 783 HW_RATE_INDEX_9MBPS, 784 HW_RATE_INDEX_12MBPS, 785 HW_RATE_INDEX_18MBPS, 786 HW_RATE_INDEX_24MBPS, 787 HW_RATE_INDEX_36MBPS, 788 HW_RATE_INDEX_48MBPS, 789 HW_RATE_INDEX_54MBPS 790 }; 791 u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = { 792 HW_RATE_INDEX_1MBPS, 793 HW_RATE_INDEX_2MBPS, 794 HW_RATE_INDEX_5_5MBPS, 795 HW_RATE_INDEX_11MBPS 796 }; 797 798 rates->op_rate_mode = STA_11n; 799 memcpy(rates->dsss_rates, dsss_rates, 800 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES); 801 memcpy(rates->ofdm_rates, ofdm_rates, 802 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES); 803 rates->supported_mcs_set[0] = 0xFF; 804 } 805 806 void wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 *rates) 807 { 808 rates->op_rate_mode = STA_11ac; 809 rates->vht_rx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9; 810 rates->vht_tx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9; 811 } 812 813 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw, 814 struct ieee80211_vif *vif, 815 struct ieee80211_bss_conf *bss_conf, 816 u32 changed) 817 { 818 struct wcn36xx *wcn = hw->priv; 819 struct sk_buff *skb = NULL; 820 u16 tim_off, tim_len; 821 enum wcn36xx_hal_link_state link_state; 822 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 823 824 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n", 825 vif, changed); 826 827 mutex_lock(&wcn->conf_mutex); 828 829 if (changed & BSS_CHANGED_BEACON_INFO) { 830 wcn36xx_dbg(WCN36XX_DBG_MAC, 831 "mac bss changed dtim period %d\n", 832 bss_conf->dtim_period); 833 834 vif_priv->dtim_period = bss_conf->dtim_period; 835 } 836 837 if (changed & BSS_CHANGED_BSSID) { 838 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n", 839 bss_conf->bssid); 840 841 if (!is_zero_ether_addr(bss_conf->bssid)) { 842 vif_priv->is_joining = true; 843 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 844 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr, 845 WCN36XX_HAL_LINK_PREASSOC_STATE); 846 wcn36xx_smd_join(wcn, bss_conf->bssid, 847 vif->addr, WCN36XX_HW_CHANNEL(wcn)); 848 wcn36xx_smd_config_bss(wcn, vif, NULL, 849 bss_conf->bssid, false); 850 } else { 851 vif_priv->is_joining = false; 852 wcn36xx_smd_delete_bss(wcn, vif); 853 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr, 854 WCN36XX_HAL_LINK_IDLE_STATE); 855 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE; 856 } 857 } 858 859 if (changed & BSS_CHANGED_SSID) { 860 wcn36xx_dbg(WCN36XX_DBG_MAC, 861 "mac bss changed ssid\n"); 862 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ", 863 bss_conf->ssid, bss_conf->ssid_len); 864 865 vif_priv->ssid.length = bss_conf->ssid_len; 866 memcpy(&vif_priv->ssid.ssid, 867 bss_conf->ssid, 868 bss_conf->ssid_len); 869 } 870 871 if (changed & BSS_CHANGED_ASSOC) { 872 vif_priv->is_joining = false; 873 if (bss_conf->assoc) { 874 struct ieee80211_sta *sta; 875 struct wcn36xx_sta *sta_priv; 876 877 wcn36xx_dbg(WCN36XX_DBG_MAC, 878 "mac assoc bss %pM vif %pM AID=%d\n", 879 bss_conf->bssid, 880 vif->addr, 881 bss_conf->aid); 882 883 vif_priv->sta_assoc = true; 884 885 /* 886 * Holding conf_mutex ensures mutal exclusion with 887 * wcn36xx_sta_remove() and as such ensures that sta 888 * won't be freed while we're operating on it. As such 889 * we do not need to hold the rcu_read_lock(). 890 */ 891 sta = ieee80211_find_sta(vif, bss_conf->bssid); 892 if (!sta) { 893 wcn36xx_err("sta %pM is not found\n", 894 bss_conf->bssid); 895 goto out; 896 } 897 sta_priv = wcn36xx_sta_to_priv(sta); 898 899 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn)); 900 901 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, 902 vif->addr, 903 WCN36XX_HAL_LINK_POSTASSOC_STATE); 904 wcn36xx_smd_config_bss(wcn, vif, sta, 905 bss_conf->bssid, 906 true); 907 sta_priv->aid = bss_conf->aid; 908 /* 909 * config_sta must be called from because this is the 910 * place where AID is available. 911 */ 912 wcn36xx_smd_config_sta(wcn, vif, sta); 913 } else { 914 wcn36xx_dbg(WCN36XX_DBG_MAC, 915 "disassociated bss %pM vif %pM AID=%d\n", 916 bss_conf->bssid, 917 vif->addr, 918 bss_conf->aid); 919 vif_priv->sta_assoc = false; 920 vif_priv->allow_bmps = false; 921 wcn36xx_smd_set_link_st(wcn, 922 bss_conf->bssid, 923 vif->addr, 924 WCN36XX_HAL_LINK_IDLE_STATE); 925 } 926 } 927 928 if (changed & BSS_CHANGED_AP_PROBE_RESP) { 929 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n"); 930 skb = ieee80211_proberesp_get(hw, vif); 931 if (!skb) { 932 wcn36xx_err("failed to alloc probereq skb\n"); 933 goto out; 934 } 935 936 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb); 937 dev_kfree_skb(skb); 938 } 939 940 if (changed & BSS_CHANGED_BEACON_ENABLED || 941 changed & BSS_CHANGED_BEACON) { 942 wcn36xx_dbg(WCN36XX_DBG_MAC, 943 "mac bss changed beacon enabled %d\n", 944 bss_conf->enable_beacon); 945 946 if (bss_conf->enable_beacon) { 947 vif_priv->dtim_period = bss_conf->dtim_period; 948 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 949 wcn36xx_smd_config_bss(wcn, vif, NULL, 950 vif->addr, false); 951 skb = ieee80211_beacon_get_tim(hw, vif, &tim_off, 952 &tim_len); 953 if (!skb) { 954 wcn36xx_err("failed to alloc beacon skb\n"); 955 goto out; 956 } 957 wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0); 958 dev_kfree_skb(skb); 959 960 if (vif->type == NL80211_IFTYPE_ADHOC || 961 vif->type == NL80211_IFTYPE_MESH_POINT) 962 link_state = WCN36XX_HAL_LINK_IBSS_STATE; 963 else 964 link_state = WCN36XX_HAL_LINK_AP_STATE; 965 966 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr, 967 link_state); 968 } else { 969 wcn36xx_smd_delete_bss(wcn, vif); 970 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr, 971 WCN36XX_HAL_LINK_IDLE_STATE); 972 } 973 } 974 out: 975 976 mutex_unlock(&wcn->conf_mutex); 977 } 978 979 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */ 980 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 981 { 982 struct wcn36xx *wcn = hw->priv; 983 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value); 984 985 mutex_lock(&wcn->conf_mutex); 986 wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value); 987 mutex_unlock(&wcn->conf_mutex); 988 989 return 0; 990 } 991 992 static void wcn36xx_remove_interface(struct ieee80211_hw *hw, 993 struct ieee80211_vif *vif) 994 { 995 struct wcn36xx *wcn = hw->priv; 996 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 997 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif); 998 999 mutex_lock(&wcn->conf_mutex); 1000 1001 list_del(&vif_priv->list); 1002 wcn36xx_smd_delete_sta_self(wcn, vif->addr); 1003 1004 mutex_unlock(&wcn->conf_mutex); 1005 } 1006 1007 static int wcn36xx_add_interface(struct ieee80211_hw *hw, 1008 struct ieee80211_vif *vif) 1009 { 1010 struct wcn36xx *wcn = hw->priv; 1011 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1012 1013 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n", 1014 vif, vif->type); 1015 1016 if (!(NL80211_IFTYPE_STATION == vif->type || 1017 NL80211_IFTYPE_AP == vif->type || 1018 NL80211_IFTYPE_ADHOC == vif->type || 1019 NL80211_IFTYPE_MESH_POINT == vif->type)) { 1020 wcn36xx_warn("Unsupported interface type requested: %d\n", 1021 vif->type); 1022 return -EOPNOTSUPP; 1023 } 1024 1025 mutex_lock(&wcn->conf_mutex); 1026 1027 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 1028 INIT_LIST_HEAD(&vif_priv->sta_list); 1029 list_add(&vif_priv->list, &wcn->vif_list); 1030 wcn36xx_smd_add_sta_self(wcn, vif); 1031 1032 mutex_unlock(&wcn->conf_mutex); 1033 1034 return 0; 1035 } 1036 1037 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1038 struct ieee80211_sta *sta) 1039 { 1040 struct wcn36xx *wcn = hw->priv; 1041 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1042 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 1043 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n", 1044 vif, sta->addr); 1045 1046 mutex_lock(&wcn->conf_mutex); 1047 1048 spin_lock_init(&sta_priv->ampdu_lock); 1049 sta_priv->vif = vif_priv; 1050 list_add(&sta_priv->list, &vif_priv->sta_list); 1051 1052 /* 1053 * For STA mode HW will be configured on BSS_CHANGED_ASSOC because 1054 * at this stage AID is not available yet. 1055 */ 1056 if (NL80211_IFTYPE_STATION != vif->type) { 1057 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn)); 1058 sta_priv->aid = sta->aid; 1059 wcn36xx_smd_config_sta(wcn, vif, sta); 1060 } 1061 1062 mutex_unlock(&wcn->conf_mutex); 1063 1064 return 0; 1065 } 1066 1067 static int wcn36xx_sta_remove(struct ieee80211_hw *hw, 1068 struct ieee80211_vif *vif, 1069 struct ieee80211_sta *sta) 1070 { 1071 struct wcn36xx *wcn = hw->priv; 1072 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 1073 1074 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n", 1075 vif, sta->addr, sta_priv->sta_index); 1076 1077 mutex_lock(&wcn->conf_mutex); 1078 1079 list_del(&sta_priv->list); 1080 wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index); 1081 sta_priv->vif = NULL; 1082 1083 mutex_unlock(&wcn->conf_mutex); 1084 1085 return 0; 1086 } 1087 1088 #ifdef CONFIG_PM 1089 1090 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow) 1091 { 1092 struct wcn36xx *wcn = hw->priv; 1093 1094 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n"); 1095 1096 flush_workqueue(wcn->hal_ind_wq); 1097 wcn36xx_smd_set_power_params(wcn, true); 1098 return 0; 1099 } 1100 1101 static int wcn36xx_resume(struct ieee80211_hw *hw) 1102 { 1103 struct wcn36xx *wcn = hw->priv; 1104 1105 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n"); 1106 1107 flush_workqueue(wcn->hal_ind_wq); 1108 wcn36xx_smd_set_power_params(wcn, false); 1109 return 0; 1110 } 1111 1112 #endif 1113 1114 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw, 1115 struct ieee80211_vif *vif, 1116 struct ieee80211_ampdu_params *params) 1117 { 1118 struct wcn36xx *wcn = hw->priv; 1119 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta); 1120 struct ieee80211_sta *sta = params->sta; 1121 enum ieee80211_ampdu_mlme_action action = params->action; 1122 u16 tid = params->tid; 1123 u16 *ssn = ¶ms->ssn; 1124 int ret = 0; 1125 u8 session; 1126 1127 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n", 1128 action, tid); 1129 1130 mutex_lock(&wcn->conf_mutex); 1131 1132 switch (action) { 1133 case IEEE80211_AMPDU_RX_START: 1134 sta_priv->tid = tid; 1135 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0, 1136 get_sta_index(vif, sta_priv)); 1137 wcn36xx_smd_add_ba(wcn, session); 1138 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid, 1139 session); 1140 break; 1141 case IEEE80211_AMPDU_RX_STOP: 1142 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv)); 1143 break; 1144 case IEEE80211_AMPDU_TX_START: 1145 spin_lock_bh(&sta_priv->ampdu_lock); 1146 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START; 1147 spin_unlock_bh(&sta_priv->ampdu_lock); 1148 1149 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 1150 break; 1151 case IEEE80211_AMPDU_TX_OPERATIONAL: 1152 spin_lock_bh(&sta_priv->ampdu_lock); 1153 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL; 1154 spin_unlock_bh(&sta_priv->ampdu_lock); 1155 1156 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1, 1157 get_sta_index(vif, sta_priv)); 1158 break; 1159 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1160 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1161 case IEEE80211_AMPDU_TX_STOP_CONT: 1162 spin_lock_bh(&sta_priv->ampdu_lock); 1163 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE; 1164 spin_unlock_bh(&sta_priv->ampdu_lock); 1165 1166 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1167 break; 1168 default: 1169 wcn36xx_err("Unknown AMPDU action\n"); 1170 } 1171 1172 mutex_unlock(&wcn->conf_mutex); 1173 1174 return ret; 1175 } 1176 1177 static const struct ieee80211_ops wcn36xx_ops = { 1178 .start = wcn36xx_start, 1179 .stop = wcn36xx_stop, 1180 .add_interface = wcn36xx_add_interface, 1181 .remove_interface = wcn36xx_remove_interface, 1182 #ifdef CONFIG_PM 1183 .suspend = wcn36xx_suspend, 1184 .resume = wcn36xx_resume, 1185 #endif 1186 .config = wcn36xx_config, 1187 .prepare_multicast = wcn36xx_prepare_multicast, 1188 .configure_filter = wcn36xx_configure_filter, 1189 .tx = wcn36xx_tx, 1190 .set_key = wcn36xx_set_key, 1191 .hw_scan = wcn36xx_hw_scan, 1192 .cancel_hw_scan = wcn36xx_cancel_hw_scan, 1193 .sw_scan_start = wcn36xx_sw_scan_start, 1194 .sw_scan_complete = wcn36xx_sw_scan_complete, 1195 .bss_info_changed = wcn36xx_bss_info_changed, 1196 .set_rts_threshold = wcn36xx_set_rts_threshold, 1197 .sta_add = wcn36xx_sta_add, 1198 .sta_remove = wcn36xx_sta_remove, 1199 .ampdu_action = wcn36xx_ampdu_action, 1200 1201 CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd) 1202 }; 1203 1204 static void 1205 wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap *vht_cap) 1206 { 1207 vht_cap->vht_supported = true; 1208 1209 vht_cap->cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 | 1210 IEEE80211_VHT_CAP_SHORT_GI_80 | 1211 IEEE80211_VHT_CAP_RXSTBC_1 | 1212 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 1213 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE | 1214 3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT | 1215 7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT); 1216 1217 vht_cap->vht_mcs.rx_mcs_map = 1218 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 | 1219 IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 | 1220 IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 | 1221 IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 | 1222 IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 | 1223 IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 | 1224 IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 | 1225 IEEE80211_VHT_MCS_NOT_SUPPORTED << 14); 1226 1227 vht_cap->vht_mcs.rx_highest = cpu_to_le16(433); 1228 vht_cap->vht_mcs.tx_highest = vht_cap->vht_mcs.rx_highest; 1229 1230 vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map; 1231 } 1232 1233 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn) 1234 { 1235 static const u32 cipher_suites[] = { 1236 WLAN_CIPHER_SUITE_WEP40, 1237 WLAN_CIPHER_SUITE_WEP104, 1238 WLAN_CIPHER_SUITE_TKIP, 1239 WLAN_CIPHER_SUITE_CCMP, 1240 }; 1241 1242 ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY); 1243 ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION); 1244 ieee80211_hw_set(wcn->hw, SUPPORTS_PS); 1245 ieee80211_hw_set(wcn->hw, SIGNAL_DBM); 1246 ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL); 1247 ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS); 1248 ieee80211_hw_set(wcn->hw, REPORTS_TX_ACK_STATUS); 1249 1250 wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1251 BIT(NL80211_IFTYPE_AP) | 1252 BIT(NL80211_IFTYPE_ADHOC) | 1253 BIT(NL80211_IFTYPE_MESH_POINT); 1254 1255 wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz; 1256 if (wcn->rf_id != RF_IRIS_WCN3620) 1257 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz; 1258 1259 if (wcn->rf_id == RF_IRIS_WCN3680) 1260 wcn36xx_set_ieee80211_vht_caps(&wcn_band_5ghz.vht_cap); 1261 1262 wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS; 1263 wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN; 1264 1265 wcn->hw->wiphy->cipher_suites = cipher_suites; 1266 wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 1267 1268 #ifdef CONFIG_PM 1269 wcn->hw->wiphy->wowlan = &wowlan_support; 1270 #endif 1271 1272 wcn->hw->max_listen_interval = 200; 1273 1274 wcn->hw->queues = 4; 1275 1276 SET_IEEE80211_DEV(wcn->hw, wcn->dev); 1277 1278 wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta); 1279 wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif); 1280 1281 wiphy_ext_feature_set(wcn->hw->wiphy, 1282 NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1283 1284 return 0; 1285 } 1286 1287 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn, 1288 struct platform_device *pdev) 1289 { 1290 struct device_node *mmio_node; 1291 struct device_node *iris_node; 1292 struct resource *res; 1293 int index; 1294 int ret; 1295 1296 /* Set TX IRQ */ 1297 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "tx"); 1298 if (!res) { 1299 wcn36xx_err("failed to get tx_irq\n"); 1300 return -ENOENT; 1301 } 1302 wcn->tx_irq = res->start; 1303 1304 /* Set RX IRQ */ 1305 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "rx"); 1306 if (!res) { 1307 wcn36xx_err("failed to get rx_irq\n"); 1308 return -ENOENT; 1309 } 1310 wcn->rx_irq = res->start; 1311 1312 /* Acquire SMSM tx enable handle */ 1313 wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev, 1314 "tx-enable", &wcn->tx_enable_state_bit); 1315 if (IS_ERR(wcn->tx_enable_state)) { 1316 wcn36xx_err("failed to get tx-enable state\n"); 1317 return PTR_ERR(wcn->tx_enable_state); 1318 } 1319 1320 /* Acquire SMSM tx rings empty handle */ 1321 wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev, 1322 "tx-rings-empty", &wcn->tx_rings_empty_state_bit); 1323 if (IS_ERR(wcn->tx_rings_empty_state)) { 1324 wcn36xx_err("failed to get tx-rings-empty state\n"); 1325 return PTR_ERR(wcn->tx_rings_empty_state); 1326 } 1327 1328 mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0); 1329 if (!mmio_node) { 1330 wcn36xx_err("failed to acquire qcom,mmio reference\n"); 1331 return -EINVAL; 1332 } 1333 1334 wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto"); 1335 1336 /* Map the CCU memory */ 1337 index = of_property_match_string(mmio_node, "reg-names", "ccu"); 1338 wcn->ccu_base = of_iomap(mmio_node, index); 1339 if (!wcn->ccu_base) { 1340 wcn36xx_err("failed to map ccu memory\n"); 1341 ret = -ENOMEM; 1342 goto put_mmio_node; 1343 } 1344 1345 /* Map the DXE memory */ 1346 index = of_property_match_string(mmio_node, "reg-names", "dxe"); 1347 wcn->dxe_base = of_iomap(mmio_node, index); 1348 if (!wcn->dxe_base) { 1349 wcn36xx_err("failed to map dxe memory\n"); 1350 ret = -ENOMEM; 1351 goto unmap_ccu; 1352 } 1353 1354 /* External RF module */ 1355 iris_node = of_get_child_by_name(mmio_node, "iris"); 1356 if (iris_node) { 1357 if (of_device_is_compatible(iris_node, "qcom,wcn3620")) 1358 wcn->rf_id = RF_IRIS_WCN3620; 1359 if (of_device_is_compatible(iris_node, "qcom,wcn3680")) 1360 wcn->rf_id = RF_IRIS_WCN3680; 1361 of_node_put(iris_node); 1362 } 1363 1364 of_node_put(mmio_node); 1365 return 0; 1366 1367 unmap_ccu: 1368 iounmap(wcn->ccu_base); 1369 put_mmio_node: 1370 of_node_put(mmio_node); 1371 return ret; 1372 } 1373 1374 static int wcn36xx_probe(struct platform_device *pdev) 1375 { 1376 struct ieee80211_hw *hw; 1377 struct wcn36xx *wcn; 1378 void *wcnss; 1379 int ret; 1380 const u8 *addr; 1381 1382 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n"); 1383 1384 wcnss = dev_get_drvdata(pdev->dev.parent); 1385 1386 hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops); 1387 if (!hw) { 1388 wcn36xx_err("failed to alloc hw\n"); 1389 ret = -ENOMEM; 1390 goto out_err; 1391 } 1392 platform_set_drvdata(pdev, hw); 1393 wcn = hw->priv; 1394 wcn->hw = hw; 1395 wcn->dev = &pdev->dev; 1396 wcn->first_boot = true; 1397 mutex_init(&wcn->conf_mutex); 1398 mutex_init(&wcn->hal_mutex); 1399 mutex_init(&wcn->scan_lock); 1400 1401 ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32)); 1402 if (ret < 0) { 1403 wcn36xx_err("failed to set DMA mask: %d\n", ret); 1404 goto out_wq; 1405 } 1406 1407 wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw); 1408 if (IS_ERR(wcn->smd_channel)) { 1409 wcn36xx_err("failed to open WLAN_CTRL channel\n"); 1410 ret = PTR_ERR(wcn->smd_channel); 1411 goto out_wq; 1412 } 1413 1414 addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret); 1415 if (addr && ret != ETH_ALEN) { 1416 wcn36xx_err("invalid local-mac-address\n"); 1417 ret = -EINVAL; 1418 goto out_destroy_ept; 1419 } else if (addr) { 1420 wcn36xx_info("mac address: %pM\n", addr); 1421 SET_IEEE80211_PERM_ADDR(wcn->hw, addr); 1422 } 1423 1424 ret = wcn36xx_platform_get_resources(wcn, pdev); 1425 if (ret) 1426 goto out_destroy_ept; 1427 1428 wcn36xx_init_ieee80211(wcn); 1429 ret = ieee80211_register_hw(wcn->hw); 1430 if (ret) 1431 goto out_unmap; 1432 1433 return 0; 1434 1435 out_unmap: 1436 iounmap(wcn->ccu_base); 1437 iounmap(wcn->dxe_base); 1438 out_destroy_ept: 1439 rpmsg_destroy_ept(wcn->smd_channel); 1440 out_wq: 1441 ieee80211_free_hw(hw); 1442 out_err: 1443 return ret; 1444 } 1445 1446 static int wcn36xx_remove(struct platform_device *pdev) 1447 { 1448 struct ieee80211_hw *hw = platform_get_drvdata(pdev); 1449 struct wcn36xx *wcn = hw->priv; 1450 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n"); 1451 1452 release_firmware(wcn->nv); 1453 1454 ieee80211_unregister_hw(hw); 1455 1456 qcom_smem_state_put(wcn->tx_enable_state); 1457 qcom_smem_state_put(wcn->tx_rings_empty_state); 1458 1459 rpmsg_destroy_ept(wcn->smd_channel); 1460 1461 iounmap(wcn->dxe_base); 1462 iounmap(wcn->ccu_base); 1463 1464 mutex_destroy(&wcn->hal_mutex); 1465 ieee80211_free_hw(hw); 1466 1467 return 0; 1468 } 1469 1470 static const struct of_device_id wcn36xx_of_match[] = { 1471 { .compatible = "qcom,wcnss-wlan" }, 1472 {} 1473 }; 1474 MODULE_DEVICE_TABLE(of, wcn36xx_of_match); 1475 1476 static struct platform_driver wcn36xx_driver = { 1477 .probe = wcn36xx_probe, 1478 .remove = wcn36xx_remove, 1479 .driver = { 1480 .name = "wcn36xx", 1481 .of_match_table = wcn36xx_of_match, 1482 }, 1483 }; 1484 1485 module_platform_driver(wcn36xx_driver); 1486 1487 MODULE_LICENSE("Dual BSD/GPL"); 1488 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com"); 1489 MODULE_FIRMWARE(WLAN_NV_FILE); 1490