1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* Copyright(c) 2018-2019 Realtek Corporation 3 */ 4 5 #include "main.h" 6 #include "sec.h" 7 #include "tx.h" 8 #include "fw.h" 9 #include "mac.h" 10 #include "coex.h" 11 #include "ps.h" 12 #include "reg.h" 13 #include "debug.h" 14 15 static void rtw_ops_tx(struct ieee80211_hw *hw, 16 struct ieee80211_tx_control *control, 17 struct sk_buff *skb) 18 { 19 struct rtw_dev *rtwdev = hw->priv; 20 struct rtw_tx_pkt_info pkt_info = {0}; 21 22 if (!rtw_flag_check(rtwdev, RTW_FLAG_RUNNING)) 23 goto out; 24 25 rtw_tx_pkt_info_update(rtwdev, &pkt_info, control, skb); 26 if (rtw_hci_tx(rtwdev, &pkt_info, skb)) 27 goto out; 28 29 return; 30 31 out: 32 ieee80211_free_txskb(hw, skb); 33 } 34 35 static int rtw_ops_start(struct ieee80211_hw *hw) 36 { 37 struct rtw_dev *rtwdev = hw->priv; 38 int ret; 39 40 mutex_lock(&rtwdev->mutex); 41 ret = rtw_core_start(rtwdev); 42 mutex_unlock(&rtwdev->mutex); 43 44 return ret; 45 } 46 47 static void rtw_ops_stop(struct ieee80211_hw *hw) 48 { 49 struct rtw_dev *rtwdev = hw->priv; 50 51 mutex_lock(&rtwdev->mutex); 52 rtw_core_stop(rtwdev); 53 mutex_unlock(&rtwdev->mutex); 54 } 55 56 static int rtw_ops_config(struct ieee80211_hw *hw, u32 changed) 57 { 58 struct rtw_dev *rtwdev = hw->priv; 59 int ret = 0; 60 61 mutex_lock(&rtwdev->mutex); 62 63 if (changed & IEEE80211_CONF_CHANGE_IDLE) { 64 if (hw->conf.flags & IEEE80211_CONF_IDLE) { 65 rtw_enter_ips(rtwdev); 66 } else { 67 ret = rtw_leave_ips(rtwdev); 68 if (ret) { 69 rtw_err(rtwdev, "failed to leave idle state\n"); 70 goto out; 71 } 72 } 73 } 74 75 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) 76 rtw_set_channel(rtwdev); 77 78 out: 79 mutex_unlock(&rtwdev->mutex); 80 return ret; 81 } 82 83 static const struct rtw_vif_port rtw_vif_port[] = { 84 [0] = { 85 .mac_addr = {.addr = 0x0610}, 86 .bssid = {.addr = 0x0618}, 87 .net_type = {.addr = 0x0100, .mask = 0x30000}, 88 .aid = {.addr = 0x06a8, .mask = 0x7ff}, 89 .bcn_ctrl = {.addr = 0x0550, .mask = 0xff}, 90 }, 91 [1] = { 92 .mac_addr = {.addr = 0x0700}, 93 .bssid = {.addr = 0x0708}, 94 .net_type = {.addr = 0x0100, .mask = 0xc0000}, 95 .aid = {.addr = 0x0710, .mask = 0x7ff}, 96 .bcn_ctrl = {.addr = 0x0551, .mask = 0xff}, 97 }, 98 [2] = { 99 .mac_addr = {.addr = 0x1620}, 100 .bssid = {.addr = 0x1628}, 101 .net_type = {.addr = 0x1100, .mask = 0x3}, 102 .aid = {.addr = 0x1600, .mask = 0x7ff}, 103 .bcn_ctrl = {.addr = 0x0578, .mask = 0xff}, 104 }, 105 [3] = { 106 .mac_addr = {.addr = 0x1630}, 107 .bssid = {.addr = 0x1638}, 108 .net_type = {.addr = 0x1100, .mask = 0xc}, 109 .aid = {.addr = 0x1604, .mask = 0x7ff}, 110 .bcn_ctrl = {.addr = 0x0579, .mask = 0xff}, 111 }, 112 [4] = { 113 .mac_addr = {.addr = 0x1640}, 114 .bssid = {.addr = 0x1648}, 115 .net_type = {.addr = 0x1100, .mask = 0x30}, 116 .aid = {.addr = 0x1608, .mask = 0x7ff}, 117 .bcn_ctrl = {.addr = 0x057a, .mask = 0xff}, 118 }, 119 }; 120 121 static int rtw_ops_add_interface(struct ieee80211_hw *hw, 122 struct ieee80211_vif *vif) 123 { 124 struct rtw_dev *rtwdev = hw->priv; 125 struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv; 126 enum rtw_net_type net_type; 127 u32 config = 0; 128 u8 port = 0; 129 u8 bcn_ctrl = 0; 130 131 rtwvif->port = port; 132 rtwvif->vif = vif; 133 rtwvif->stats.tx_unicast = 0; 134 rtwvif->stats.rx_unicast = 0; 135 rtwvif->stats.tx_cnt = 0; 136 rtwvif->stats.rx_cnt = 0; 137 rtwvif->in_lps = false; 138 rtwvif->conf = &rtw_vif_port[port]; 139 140 mutex_lock(&rtwdev->mutex); 141 142 switch (vif->type) { 143 case NL80211_IFTYPE_AP: 144 case NL80211_IFTYPE_MESH_POINT: 145 net_type = RTW_NET_AP_MODE; 146 bcn_ctrl = BIT_EN_BCN_FUNCTION | BIT_DIS_TSF_UDT; 147 break; 148 case NL80211_IFTYPE_ADHOC: 149 net_type = RTW_NET_AD_HOC; 150 bcn_ctrl = BIT_EN_BCN_FUNCTION | BIT_DIS_TSF_UDT; 151 break; 152 case NL80211_IFTYPE_STATION: 153 default: 154 net_type = RTW_NET_NO_LINK; 155 bcn_ctrl = BIT_EN_BCN_FUNCTION; 156 break; 157 } 158 159 ether_addr_copy(rtwvif->mac_addr, vif->addr); 160 config |= PORT_SET_MAC_ADDR; 161 rtwvif->net_type = net_type; 162 config |= PORT_SET_NET_TYPE; 163 rtwvif->bcn_ctrl = bcn_ctrl; 164 config |= PORT_SET_BCN_CTRL; 165 rtw_vif_port_config(rtwdev, rtwvif, config); 166 167 mutex_unlock(&rtwdev->mutex); 168 169 rtw_info(rtwdev, "start vif %pM on port %d\n", vif->addr, rtwvif->port); 170 return 0; 171 } 172 173 static void rtw_ops_remove_interface(struct ieee80211_hw *hw, 174 struct ieee80211_vif *vif) 175 { 176 struct rtw_dev *rtwdev = hw->priv; 177 struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv; 178 u32 config = 0; 179 180 rtw_info(rtwdev, "stop vif %pM on port %d\n", vif->addr, rtwvif->port); 181 182 mutex_lock(&rtwdev->mutex); 183 184 eth_zero_addr(rtwvif->mac_addr); 185 config |= PORT_SET_MAC_ADDR; 186 rtwvif->net_type = RTW_NET_NO_LINK; 187 config |= PORT_SET_NET_TYPE; 188 rtwvif->bcn_ctrl = 0; 189 config |= PORT_SET_BCN_CTRL; 190 rtw_vif_port_config(rtwdev, rtwvif, config); 191 192 mutex_unlock(&rtwdev->mutex); 193 } 194 195 static void rtw_ops_configure_filter(struct ieee80211_hw *hw, 196 unsigned int changed_flags, 197 unsigned int *new_flags, 198 u64 multicast) 199 { 200 struct rtw_dev *rtwdev = hw->priv; 201 202 *new_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_FCSFAIL | 203 FIF_BCN_PRBRESP_PROMISC; 204 205 mutex_lock(&rtwdev->mutex); 206 207 if (changed_flags & FIF_ALLMULTI) { 208 if (*new_flags & FIF_ALLMULTI) 209 rtwdev->hal.rcr |= BIT_AM | BIT_AB; 210 else 211 rtwdev->hal.rcr &= ~(BIT_AM | BIT_AB); 212 } 213 if (changed_flags & FIF_FCSFAIL) { 214 if (*new_flags & FIF_FCSFAIL) 215 rtwdev->hal.rcr |= BIT_ACRC32; 216 else 217 rtwdev->hal.rcr &= ~(BIT_ACRC32); 218 } 219 if (changed_flags & FIF_OTHER_BSS) { 220 if (*new_flags & FIF_OTHER_BSS) 221 rtwdev->hal.rcr |= BIT_AAP; 222 else 223 rtwdev->hal.rcr &= ~(BIT_AAP); 224 } 225 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { 226 if (*new_flags & FIF_BCN_PRBRESP_PROMISC) 227 rtwdev->hal.rcr &= ~(BIT_CBSSID_BCN | BIT_CBSSID_DATA); 228 else 229 rtwdev->hal.rcr |= BIT_CBSSID_BCN; 230 } 231 232 rtw_dbg(rtwdev, RTW_DBG_RX, 233 "config rx filter, changed=0x%08x, new=0x%08x, rcr=0x%08x\n", 234 changed_flags, *new_flags, rtwdev->hal.rcr); 235 236 rtw_write32(rtwdev, REG_RCR, rtwdev->hal.rcr); 237 238 mutex_unlock(&rtwdev->mutex); 239 } 240 241 static void rtw_ops_bss_info_changed(struct ieee80211_hw *hw, 242 struct ieee80211_vif *vif, 243 struct ieee80211_bss_conf *conf, 244 u32 changed) 245 { 246 struct rtw_dev *rtwdev = hw->priv; 247 struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv; 248 u32 config = 0; 249 250 mutex_lock(&rtwdev->mutex); 251 252 if (changed & BSS_CHANGED_ASSOC) { 253 struct rtw_chip_info *chip = rtwdev->chip; 254 enum rtw_net_type net_type; 255 256 if (conf->assoc) { 257 rtw_coex_connect_notify(rtwdev, COEX_ASSOCIATE_FINISH); 258 net_type = RTW_NET_MGD_LINKED; 259 chip->ops->phy_calibration(rtwdev); 260 261 rtwvif->aid = conf->aid; 262 rtw_add_rsvd_page(rtwdev, RSVD_PS_POLL, true); 263 rtw_add_rsvd_page(rtwdev, RSVD_QOS_NULL, true); 264 rtw_add_rsvd_page(rtwdev, RSVD_NULL, true); 265 rtw_fw_download_rsvd_page(rtwdev, vif); 266 rtw_send_rsvd_page_h2c(rtwdev); 267 rtw_coex_media_status_notify(rtwdev, conf->assoc); 268 } else { 269 net_type = RTW_NET_NO_LINK; 270 rtwvif->aid = 0; 271 rtw_reset_rsvd_page(rtwdev); 272 } 273 274 rtwvif->net_type = net_type; 275 config |= PORT_SET_NET_TYPE; 276 config |= PORT_SET_AID; 277 } 278 279 if (changed & BSS_CHANGED_BSSID) { 280 ether_addr_copy(rtwvif->bssid, conf->bssid); 281 config |= PORT_SET_BSSID; 282 } 283 284 if (changed & BSS_CHANGED_BEACON) 285 rtw_fw_download_rsvd_page(rtwdev, vif); 286 287 rtw_vif_port_config(rtwdev, rtwvif, config); 288 289 mutex_unlock(&rtwdev->mutex); 290 } 291 292 static u8 rtw_acquire_macid(struct rtw_dev *rtwdev) 293 { 294 unsigned long mac_id; 295 296 mac_id = find_first_zero_bit(rtwdev->mac_id_map, RTW_MAX_MAC_ID_NUM); 297 if (mac_id < RTW_MAX_MAC_ID_NUM) 298 set_bit(mac_id, rtwdev->mac_id_map); 299 300 return mac_id; 301 } 302 303 static void rtw_release_macid(struct rtw_dev *rtwdev, u8 mac_id) 304 { 305 clear_bit(mac_id, rtwdev->mac_id_map); 306 } 307 308 static int rtw_ops_sta_add(struct ieee80211_hw *hw, 309 struct ieee80211_vif *vif, 310 struct ieee80211_sta *sta) 311 { 312 struct rtw_dev *rtwdev = hw->priv; 313 struct rtw_sta_info *si = (struct rtw_sta_info *)sta->drv_priv; 314 int ret = 0; 315 316 mutex_lock(&rtwdev->mutex); 317 318 si->mac_id = rtw_acquire_macid(rtwdev); 319 if (si->mac_id >= RTW_MAX_MAC_ID_NUM) { 320 ret = -ENOSPC; 321 goto out; 322 } 323 324 si->sta = sta; 325 si->vif = vif; 326 si->init_ra_lv = 1; 327 ewma_rssi_init(&si->avg_rssi); 328 329 rtw_update_sta_info(rtwdev, si); 330 rtw_fw_media_status_report(rtwdev, si->mac_id, true); 331 332 rtwdev->sta_cnt++; 333 334 rtw_info(rtwdev, "sta %pM joined with macid %d\n", 335 sta->addr, si->mac_id); 336 337 out: 338 mutex_unlock(&rtwdev->mutex); 339 return ret; 340 } 341 342 static int rtw_ops_sta_remove(struct ieee80211_hw *hw, 343 struct ieee80211_vif *vif, 344 struct ieee80211_sta *sta) 345 { 346 struct rtw_dev *rtwdev = hw->priv; 347 struct rtw_sta_info *si = (struct rtw_sta_info *)sta->drv_priv; 348 349 mutex_lock(&rtwdev->mutex); 350 351 rtw_release_macid(rtwdev, si->mac_id); 352 rtw_fw_media_status_report(rtwdev, si->mac_id, false); 353 354 rtwdev->sta_cnt--; 355 356 rtw_info(rtwdev, "sta %pM with macid %d left\n", 357 sta->addr, si->mac_id); 358 359 mutex_unlock(&rtwdev->mutex); 360 return 0; 361 } 362 363 static int rtw_ops_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 364 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 365 struct ieee80211_key_conf *key) 366 { 367 struct rtw_dev *rtwdev = hw->priv; 368 struct rtw_sec_desc *sec = &rtwdev->sec; 369 u8 hw_key_type; 370 u8 hw_key_idx; 371 int ret = 0; 372 373 switch (key->cipher) { 374 case WLAN_CIPHER_SUITE_WEP40: 375 hw_key_type = RTW_CAM_WEP40; 376 break; 377 case WLAN_CIPHER_SUITE_WEP104: 378 hw_key_type = RTW_CAM_WEP104; 379 break; 380 case WLAN_CIPHER_SUITE_TKIP: 381 hw_key_type = RTW_CAM_TKIP; 382 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 383 break; 384 case WLAN_CIPHER_SUITE_CCMP: 385 hw_key_type = RTW_CAM_AES; 386 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; 387 break; 388 case WLAN_CIPHER_SUITE_AES_CMAC: 389 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 390 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 391 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 392 /* suppress error messages */ 393 return -EOPNOTSUPP; 394 default: 395 return -ENOTSUPP; 396 } 397 398 mutex_lock(&rtwdev->mutex); 399 400 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 401 hw_key_idx = rtw_sec_get_free_cam(sec); 402 } else { 403 /* multiple interfaces? */ 404 hw_key_idx = key->keyidx; 405 } 406 407 if (hw_key_idx > sec->total_cam_num) { 408 ret = -ENOSPC; 409 goto out; 410 } 411 412 switch (cmd) { 413 case SET_KEY: 414 /* need sw generated IV */ 415 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 416 key->hw_key_idx = hw_key_idx; 417 rtw_sec_write_cam(rtwdev, sec, sta, key, 418 hw_key_type, hw_key_idx); 419 break; 420 case DISABLE_KEY: 421 rtw_sec_clear_cam(rtwdev, sec, key->hw_key_idx); 422 break; 423 } 424 425 out: 426 mutex_unlock(&rtwdev->mutex); 427 428 return ret; 429 } 430 431 static int rtw_ops_ampdu_action(struct ieee80211_hw *hw, 432 struct ieee80211_vif *vif, 433 struct ieee80211_ampdu_params *params) 434 { 435 struct ieee80211_sta *sta = params->sta; 436 u16 tid = params->tid; 437 438 switch (params->action) { 439 case IEEE80211_AMPDU_TX_START: 440 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 441 break; 442 case IEEE80211_AMPDU_TX_STOP_CONT: 443 case IEEE80211_AMPDU_TX_STOP_FLUSH: 444 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 445 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 446 break; 447 case IEEE80211_AMPDU_TX_OPERATIONAL: 448 case IEEE80211_AMPDU_RX_START: 449 case IEEE80211_AMPDU_RX_STOP: 450 break; 451 default: 452 WARN_ON(1); 453 return -ENOTSUPP; 454 } 455 456 return 0; 457 } 458 459 static void rtw_ops_sw_scan_start(struct ieee80211_hw *hw, 460 struct ieee80211_vif *vif, 461 const u8 *mac_addr) 462 { 463 struct rtw_dev *rtwdev = hw->priv; 464 struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv; 465 u32 config = 0; 466 467 rtw_leave_lps(rtwdev, rtwvif); 468 469 mutex_lock(&rtwdev->mutex); 470 471 ether_addr_copy(rtwvif->mac_addr, mac_addr); 472 config |= PORT_SET_MAC_ADDR; 473 rtw_vif_port_config(rtwdev, rtwvif, config); 474 475 rtw_coex_scan_notify(rtwdev, COEX_SCAN_START); 476 477 rtw_flag_set(rtwdev, RTW_FLAG_DIG_DISABLE); 478 rtw_flag_set(rtwdev, RTW_FLAG_SCANNING); 479 480 mutex_unlock(&rtwdev->mutex); 481 } 482 483 static void rtw_ops_sw_scan_complete(struct ieee80211_hw *hw, 484 struct ieee80211_vif *vif) 485 { 486 struct rtw_dev *rtwdev = hw->priv; 487 struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv; 488 u32 config = 0; 489 490 mutex_lock(&rtwdev->mutex); 491 492 rtw_flag_clear(rtwdev, RTW_FLAG_SCANNING); 493 rtw_flag_clear(rtwdev, RTW_FLAG_DIG_DISABLE); 494 495 ether_addr_copy(rtwvif->mac_addr, vif->addr); 496 config |= PORT_SET_MAC_ADDR; 497 rtw_vif_port_config(rtwdev, rtwvif, config); 498 499 rtw_coex_scan_notify(rtwdev, COEX_SCAN_FINISH); 500 501 mutex_unlock(&rtwdev->mutex); 502 } 503 504 static void rtw_ops_mgd_prepare_tx(struct ieee80211_hw *hw, 505 struct ieee80211_vif *vif, 506 u16 duration) 507 { 508 struct rtw_dev *rtwdev = hw->priv; 509 510 mutex_lock(&rtwdev->mutex); 511 rtw_coex_connect_notify(rtwdev, COEX_ASSOCIATE_START); 512 mutex_unlock(&rtwdev->mutex); 513 } 514 515 const struct ieee80211_ops rtw_ops = { 516 .tx = rtw_ops_tx, 517 .start = rtw_ops_start, 518 .stop = rtw_ops_stop, 519 .config = rtw_ops_config, 520 .add_interface = rtw_ops_add_interface, 521 .remove_interface = rtw_ops_remove_interface, 522 .configure_filter = rtw_ops_configure_filter, 523 .bss_info_changed = rtw_ops_bss_info_changed, 524 .sta_add = rtw_ops_sta_add, 525 .sta_remove = rtw_ops_sta_remove, 526 .set_key = rtw_ops_set_key, 527 .ampdu_action = rtw_ops_ampdu_action, 528 .sw_scan_start = rtw_ops_sw_scan_start, 529 .sw_scan_complete = rtw_ops_sw_scan_complete, 530 .mgd_prepare_tx = rtw_ops_mgd_prepare_tx, 531 }; 532 EXPORT_SYMBOL(rtw_ops); 533