1 /* 2 * Copyright (c) 2012-2017 Qualcomm Atheros, Inc. 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 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/moduleparam.h> 18 #include <linux/if_arp.h> 19 #include <linux/etherdevice.h> 20 21 #include "wil6210.h" 22 #include "txrx.h" 23 #include "wmi.h" 24 #include "boot_loader.h" 25 26 #define WAIT_FOR_HALP_VOTE_MS 100 27 #define WAIT_FOR_SCAN_ABORT_MS 1000 28 29 bool debug_fw; /* = false; */ 30 module_param(debug_fw, bool, 0444); 31 MODULE_PARM_DESC(debug_fw, " do not perform card reset. For FW debug"); 32 33 static u8 oob_mode; 34 module_param(oob_mode, byte, 0444); 35 MODULE_PARM_DESC(oob_mode, 36 " enable out of the box (OOB) mode in FW, for diagnostics and certification"); 37 38 bool no_fw_recovery; 39 module_param(no_fw_recovery, bool, 0644); 40 MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery"); 41 42 /* if not set via modparam, will be set to default value of 1/8 of 43 * rx ring size during init flow 44 */ 45 unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT; 46 module_param(rx_ring_overflow_thrsh, ushort, 0444); 47 MODULE_PARM_DESC(rx_ring_overflow_thrsh, 48 " RX ring overflow threshold in descriptors."); 49 50 /* We allow allocation of more than 1 page buffers to support large packets. 51 * It is suboptimal behavior performance wise in case MTU above page size. 52 */ 53 unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 54 static int mtu_max_set(const char *val, const struct kernel_param *kp) 55 { 56 int ret; 57 58 /* sets mtu_max directly. no need to restore it in case of 59 * illegal value since we assume this will fail insmod 60 */ 61 ret = param_set_uint(val, kp); 62 if (ret) 63 return ret; 64 65 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU) 66 ret = -EINVAL; 67 68 return ret; 69 } 70 71 static const struct kernel_param_ops mtu_max_ops = { 72 .set = mtu_max_set, 73 .get = param_get_uint, 74 }; 75 76 module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, 0444); 77 MODULE_PARM_DESC(mtu_max, " Max MTU value."); 78 79 static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT; 80 static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT; 81 static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT; 82 83 static int ring_order_set(const char *val, const struct kernel_param *kp) 84 { 85 int ret; 86 uint x; 87 88 ret = kstrtouint(val, 0, &x); 89 if (ret) 90 return ret; 91 92 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX)) 93 return -EINVAL; 94 95 *((uint *)kp->arg) = x; 96 97 return 0; 98 } 99 100 static const struct kernel_param_ops ring_order_ops = { 101 .set = ring_order_set, 102 .get = param_get_uint, 103 }; 104 105 module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, 0444); 106 MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order"); 107 module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, 0444); 108 MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order"); 109 module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, 0444); 110 MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order"); 111 112 #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 113 #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 114 115 /* 116 * Due to a hardware issue, 117 * one has to read/write to/from NIC in 32-bit chunks; 118 * regular memcpy_fromio and siblings will 119 * not work on 64-bit platform - it uses 64-bit transactions 120 * 121 * Force 32-bit transactions to enable NIC on 64-bit platforms 122 * 123 * To avoid byte swap on big endian host, __raw_{read|write}l 124 * should be used - {read|write}l would swap bytes to provide 125 * little endian on PCI value in host endianness. 126 */ 127 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 128 size_t count) 129 { 130 u32 *d = dst; 131 const volatile u32 __iomem *s = src; 132 133 for (; count >= 4; count -= 4) 134 *d++ = __raw_readl(s++); 135 136 if (unlikely(count)) { 137 /* count can be 1..3 */ 138 u32 tmp = __raw_readl(s); 139 140 memcpy(d, &tmp, count); 141 } 142 } 143 144 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, 145 size_t count) 146 { 147 volatile u32 __iomem *d = dst; 148 const u32 *s = src; 149 150 for (; count >= 4; count -= 4) 151 __raw_writel(*s++, d++); 152 153 if (unlikely(count)) { 154 /* count can be 1..3 */ 155 u32 tmp = 0; 156 157 memcpy(&tmp, s, count); 158 __raw_writel(tmp, d); 159 } 160 } 161 162 static void wil_disconnect_cid(struct wil6210_priv *wil, int cid, 163 u16 reason_code, bool from_event) 164 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) 165 { 166 uint i; 167 struct net_device *ndev = wil_to_ndev(wil); 168 struct wireless_dev *wdev = wil->wdev; 169 struct wil_sta_info *sta = &wil->sta[cid]; 170 171 might_sleep(); 172 wil_dbg_misc(wil, "disconnect_cid: CID %d, status %d\n", 173 cid, sta->status); 174 /* inform upper/lower layers */ 175 if (sta->status != wil_sta_unused) { 176 if (!from_event) { 177 bool del_sta = (wdev->iftype == NL80211_IFTYPE_AP) ? 178 disable_ap_sme : false; 179 wmi_disconnect_sta(wil, sta->addr, reason_code, 180 true, del_sta); 181 } 182 183 switch (wdev->iftype) { 184 case NL80211_IFTYPE_AP: 185 case NL80211_IFTYPE_P2P_GO: 186 /* AP-like interface */ 187 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 188 break; 189 default: 190 break; 191 } 192 sta->status = wil_sta_unused; 193 } 194 /* reorder buffers */ 195 for (i = 0; i < WIL_STA_TID_NUM; i++) { 196 struct wil_tid_ampdu_rx *r; 197 198 spin_lock_bh(&sta->tid_rx_lock); 199 200 r = sta->tid_rx[i]; 201 sta->tid_rx[i] = NULL; 202 wil_tid_ampdu_rx_free(wil, r); 203 204 spin_unlock_bh(&sta->tid_rx_lock); 205 } 206 /* crypto context */ 207 memset(sta->tid_crypto_rx, 0, sizeof(sta->tid_crypto_rx)); 208 memset(&sta->group_crypto_rx, 0, sizeof(sta->group_crypto_rx)); 209 /* release vrings */ 210 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 211 if (wil->vring2cid_tid[i][0] == cid) 212 wil_vring_fini_tx(wil, i); 213 } 214 /* statistics */ 215 memset(&sta->stats, 0, sizeof(sta->stats)); 216 } 217 218 static bool wil_is_connected(struct wil6210_priv *wil) 219 { 220 int i; 221 222 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 223 if (wil->sta[i].status == wil_sta_connected) 224 return true; 225 } 226 227 return false; 228 } 229 230 static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 231 u16 reason_code, bool from_event) 232 { 233 int cid = -ENOENT; 234 struct net_device *ndev = wil_to_ndev(wil); 235 struct wireless_dev *wdev = wil->wdev; 236 237 if (unlikely(!ndev)) 238 return; 239 240 might_sleep(); 241 wil_info(wil, "bssid=%pM, reason=%d, ev%s\n", bssid, 242 reason_code, from_event ? "+" : "-"); 243 244 /* Cases are: 245 * - disconnect single STA, still connected 246 * - disconnect single STA, already disconnected 247 * - disconnect all 248 * 249 * For "disconnect all", there are 3 options: 250 * - bssid == NULL 251 * - bssid is broadcast address (ff:ff:ff:ff:ff:ff) 252 * - bssid is our MAC address 253 */ 254 if (bssid && !is_broadcast_ether_addr(bssid) && 255 !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) { 256 cid = wil_find_cid(wil, bssid); 257 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 258 bssid, cid, reason_code); 259 if (cid >= 0) /* disconnect 1 peer */ 260 wil_disconnect_cid(wil, cid, reason_code, from_event); 261 } else { /* all */ 262 wil_dbg_misc(wil, "Disconnect all\n"); 263 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 264 wil_disconnect_cid(wil, cid, reason_code, from_event); 265 } 266 267 /* link state */ 268 switch (wdev->iftype) { 269 case NL80211_IFTYPE_STATION: 270 case NL80211_IFTYPE_P2P_CLIENT: 271 wil_bcast_fini(wil); 272 wil_update_net_queues_bh(wil, NULL, true); 273 netif_carrier_off(ndev); 274 wil6210_bus_request(wil, WIL_DEFAULT_BUS_REQUEST_KBPS); 275 276 if (test_bit(wil_status_fwconnected, wil->status)) { 277 clear_bit(wil_status_fwconnected, wil->status); 278 cfg80211_disconnected(ndev, reason_code, 279 NULL, 0, 280 wil->locally_generated_disc, 281 GFP_KERNEL); 282 wil->locally_generated_disc = false; 283 } else if (test_bit(wil_status_fwconnecting, wil->status)) { 284 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 285 WLAN_STATUS_UNSPECIFIED_FAILURE, 286 GFP_KERNEL); 287 wil->bss = NULL; 288 } 289 clear_bit(wil_status_fwconnecting, wil->status); 290 break; 291 case NL80211_IFTYPE_AP: 292 case NL80211_IFTYPE_P2P_GO: 293 if (!wil_is_connected(wil)) { 294 wil_update_net_queues_bh(wil, NULL, true); 295 clear_bit(wil_status_fwconnected, wil->status); 296 } else { 297 wil_update_net_queues_bh(wil, NULL, false); 298 } 299 break; 300 default: 301 break; 302 } 303 } 304 305 static void wil_disconnect_worker(struct work_struct *work) 306 { 307 struct wil6210_priv *wil = container_of(work, 308 struct wil6210_priv, disconnect_worker); 309 struct net_device *ndev = wil_to_ndev(wil); 310 int rc; 311 struct { 312 struct wmi_cmd_hdr wmi; 313 struct wmi_disconnect_event evt; 314 } __packed reply; 315 316 if (test_bit(wil_status_fwconnected, wil->status)) 317 /* connect succeeded after all */ 318 return; 319 320 if (!test_bit(wil_status_fwconnecting, wil->status)) 321 /* already disconnected */ 322 return; 323 324 rc = wmi_call(wil, WMI_DISCONNECT_CMDID, NULL, 0, 325 WMI_DISCONNECT_EVENTID, &reply, sizeof(reply), 326 WIL6210_DISCONNECT_TO_MS); 327 if (rc) { 328 wil_err(wil, "disconnect error %d\n", rc); 329 return; 330 } 331 332 wil_update_net_queues_bh(wil, NULL, true); 333 netif_carrier_off(ndev); 334 cfg80211_connect_result(ndev, NULL, NULL, 0, NULL, 0, 335 WLAN_STATUS_UNSPECIFIED_FAILURE, GFP_KERNEL); 336 clear_bit(wil_status_fwconnecting, wil->status); 337 } 338 339 static void wil_connect_timer_fn(struct timer_list *t) 340 { 341 struct wil6210_priv *wil = from_timer(wil, t, connect_timer); 342 bool q; 343 344 wil_err(wil, "Connect timeout detected, disconnect station\n"); 345 346 /* reschedule to thread context - disconnect won't 347 * run from atomic context. 348 * queue on wmi_wq to prevent race with connect event. 349 */ 350 q = queue_work(wil->wmi_wq, &wil->disconnect_worker); 351 wil_dbg_wmi(wil, "queue_work of disconnect_worker -> %d\n", q); 352 } 353 354 static void wil_scan_timer_fn(struct timer_list *t) 355 { 356 struct wil6210_priv *wil = from_timer(wil, t, scan_timer); 357 358 clear_bit(wil_status_fwready, wil->status); 359 wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 360 wil_fw_error_recovery(wil); 361 } 362 363 static int wil_wait_for_recovery(struct wil6210_priv *wil) 364 { 365 if (wait_event_interruptible(wil->wq, wil->recovery_state != 366 fw_recovery_pending)) { 367 wil_err(wil, "Interrupt, canceling recovery\n"); 368 return -ERESTARTSYS; 369 } 370 if (wil->recovery_state != fw_recovery_running) { 371 wil_info(wil, "Recovery cancelled\n"); 372 return -EINTR; 373 } 374 wil_info(wil, "Proceed with recovery\n"); 375 return 0; 376 } 377 378 void wil_set_recovery_state(struct wil6210_priv *wil, int state) 379 { 380 wil_dbg_misc(wil, "set_recovery_state: %d -> %d\n", 381 wil->recovery_state, state); 382 383 wil->recovery_state = state; 384 wake_up_interruptible(&wil->wq); 385 } 386 387 bool wil_is_recovery_blocked(struct wil6210_priv *wil) 388 { 389 return no_fw_recovery && (wil->recovery_state == fw_recovery_pending); 390 } 391 392 static void wil_fw_error_worker(struct work_struct *work) 393 { 394 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 395 fw_error_worker); 396 struct wireless_dev *wdev = wil->wdev; 397 struct net_device *ndev = wil_to_ndev(wil); 398 399 wil_dbg_misc(wil, "fw error worker\n"); 400 401 if (!(ndev->flags & IFF_UP)) { 402 wil_info(wil, "No recovery - interface is down\n"); 403 return; 404 } 405 406 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 407 * passed since last recovery attempt 408 */ 409 if (time_is_after_jiffies(wil->last_fw_recovery + 410 WIL6210_FW_RECOVERY_TO)) 411 wil->recovery_count++; 412 else 413 wil->recovery_count = 1; /* fw was alive for a long time */ 414 415 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 416 wil_err(wil, "too many recovery attempts (%d), giving up\n", 417 wil->recovery_count); 418 return; 419 } 420 421 wil->last_fw_recovery = jiffies; 422 423 wil_info(wil, "fw error recovery requested (try %d)...\n", 424 wil->recovery_count); 425 if (!no_fw_recovery) 426 wil->recovery_state = fw_recovery_running; 427 if (wil_wait_for_recovery(wil) != 0) 428 return; 429 430 mutex_lock(&wil->mutex); 431 switch (wdev->iftype) { 432 case NL80211_IFTYPE_STATION: 433 case NL80211_IFTYPE_P2P_CLIENT: 434 case NL80211_IFTYPE_MONITOR: 435 /* silent recovery, upper layers will see disconnect */ 436 __wil_down(wil); 437 __wil_up(wil); 438 break; 439 case NL80211_IFTYPE_AP: 440 case NL80211_IFTYPE_P2P_GO: 441 wil_info(wil, "No recovery for AP-like interface\n"); 442 /* recovery in these modes is done by upper layers */ 443 break; 444 default: 445 wil_err(wil, "No recovery - unknown interface type %d\n", 446 wdev->iftype); 447 break; 448 } 449 mutex_unlock(&wil->mutex); 450 } 451 452 static int wil_find_free_vring(struct wil6210_priv *wil) 453 { 454 int i; 455 456 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 457 if (!wil->vring_tx[i].va) 458 return i; 459 } 460 return -EINVAL; 461 } 462 463 int wil_tx_init(struct wil6210_priv *wil, int cid) 464 { 465 int rc = -EINVAL, ringid; 466 467 if (cid < 0) { 468 wil_err(wil, "No connection pending\n"); 469 goto out; 470 } 471 ringid = wil_find_free_vring(wil); 472 if (ringid < 0) { 473 wil_err(wil, "No free vring found\n"); 474 goto out; 475 } 476 477 wil_dbg_wmi(wil, "Configure for connection CID %d vring %d\n", 478 cid, ringid); 479 480 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); 481 if (rc) 482 wil_err(wil, "wil_vring_init_tx for CID %d vring %d failed\n", 483 cid, ringid); 484 485 out: 486 return rc; 487 } 488 489 int wil_bcast_init(struct wil6210_priv *wil) 490 { 491 int ri = wil->bcast_vring, rc; 492 493 if ((ri >= 0) && wil->vring_tx[ri].va) 494 return 0; 495 496 ri = wil_find_free_vring(wil); 497 if (ri < 0) 498 return ri; 499 500 wil->bcast_vring = ri; 501 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order); 502 if (rc) 503 wil->bcast_vring = -1; 504 505 return rc; 506 } 507 508 void wil_bcast_fini(struct wil6210_priv *wil) 509 { 510 int ri = wil->bcast_vring; 511 512 if (ri < 0) 513 return; 514 515 wil->bcast_vring = -1; 516 wil_vring_fini_tx(wil, ri); 517 } 518 519 int wil_priv_init(struct wil6210_priv *wil) 520 { 521 uint i; 522 523 wil_dbg_misc(wil, "priv_init\n"); 524 525 memset(wil->sta, 0, sizeof(wil->sta)); 526 for (i = 0; i < WIL6210_MAX_CID; i++) 527 spin_lock_init(&wil->sta[i].tid_rx_lock); 528 529 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) 530 spin_lock_init(&wil->vring_tx_data[i].lock); 531 532 mutex_init(&wil->mutex); 533 mutex_init(&wil->wmi_mutex); 534 mutex_init(&wil->probe_client_mutex); 535 mutex_init(&wil->p2p_wdev_mutex); 536 mutex_init(&wil->halp.lock); 537 538 init_completion(&wil->wmi_ready); 539 init_completion(&wil->wmi_call); 540 init_completion(&wil->halp.comp); 541 542 wil->bcast_vring = -1; 543 timer_setup(&wil->connect_timer, wil_connect_timer_fn, 0); 544 timer_setup(&wil->scan_timer, wil_scan_timer_fn, 0); 545 timer_setup(&wil->p2p.discovery_timer, wil_p2p_discovery_timer_fn, 0); 546 547 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 548 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 549 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 550 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker); 551 INIT_WORK(&wil->p2p.delayed_listen_work, wil_p2p_delayed_listen_work); 552 553 INIT_LIST_HEAD(&wil->pending_wmi_ev); 554 INIT_LIST_HEAD(&wil->probe_client_pending); 555 spin_lock_init(&wil->wmi_ev_lock); 556 spin_lock_init(&wil->net_queue_lock); 557 wil->net_queue_stopped = 1; 558 init_waitqueue_head(&wil->wq); 559 560 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 561 if (!wil->wmi_wq) 562 return -EAGAIN; 563 564 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 565 if (!wil->wq_service) 566 goto out_wmi_wq; 567 568 wil->last_fw_recovery = jiffies; 569 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 570 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 571 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 572 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 573 574 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 575 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 576 577 wil->ps_profile = WMI_PS_PROFILE_TYPE_DEFAULT; 578 579 wil->wakeup_trigger = WMI_WAKEUP_TRIGGER_UCAST | 580 WMI_WAKEUP_TRIGGER_BCAST; 581 memset(&wil->suspend_stats, 0, sizeof(wil->suspend_stats)); 582 wil->suspend_stats.min_suspend_time = ULONG_MAX; 583 wil->vring_idle_trsh = 16; 584 585 return 0; 586 587 out_wmi_wq: 588 destroy_workqueue(wil->wmi_wq); 589 590 return -EAGAIN; 591 } 592 593 void wil6210_bus_request(struct wil6210_priv *wil, u32 kbps) 594 { 595 if (wil->platform_ops.bus_request) { 596 wil->bus_request_kbps = kbps; 597 wil->platform_ops.bus_request(wil->platform_handle, kbps); 598 } 599 } 600 601 /** 602 * wil6210_disconnect - disconnect one connection 603 * @wil: driver context 604 * @bssid: peer to disconnect, NULL to disconnect all 605 * @reason_code: Reason code for the Disassociation frame 606 * @from_event: whether is invoked from FW event handler 607 * 608 * Disconnect and release associated resources. If invoked not from the 609 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 610 */ 611 void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 612 u16 reason_code, bool from_event) 613 { 614 wil_dbg_misc(wil, "disconnect\n"); 615 616 del_timer_sync(&wil->connect_timer); 617 _wil6210_disconnect(wil, bssid, reason_code, from_event); 618 } 619 620 void wil_priv_deinit(struct wil6210_priv *wil) 621 { 622 wil_dbg_misc(wil, "priv_deinit\n"); 623 624 wil_set_recovery_state(wil, fw_recovery_idle); 625 del_timer_sync(&wil->scan_timer); 626 del_timer_sync(&wil->p2p.discovery_timer); 627 cancel_work_sync(&wil->disconnect_worker); 628 cancel_work_sync(&wil->fw_error_worker); 629 cancel_work_sync(&wil->p2p.discovery_expired_work); 630 cancel_work_sync(&wil->p2p.delayed_listen_work); 631 mutex_lock(&wil->mutex); 632 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 633 mutex_unlock(&wil->mutex); 634 wmi_event_flush(wil); 635 wil_probe_client_flush(wil); 636 cancel_work_sync(&wil->probe_client_worker); 637 destroy_workqueue(wil->wq_service); 638 destroy_workqueue(wil->wmi_wq); 639 } 640 641 static inline void wil_halt_cpu(struct wil6210_priv *wil) 642 { 643 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 644 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 645 } 646 647 static inline void wil_release_cpu(struct wil6210_priv *wil) 648 { 649 /* Start CPU */ 650 wil_w(wil, RGF_USER_USER_CPU_0, 1); 651 } 652 653 static void wil_set_oob_mode(struct wil6210_priv *wil, u8 mode) 654 { 655 wil_info(wil, "oob_mode to %d\n", mode); 656 switch (mode) { 657 case 0: 658 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE | 659 BIT_USER_OOB_R2_MODE); 660 break; 661 case 1: 662 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 663 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 664 break; 665 case 2: 666 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 667 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 668 break; 669 default: 670 wil_err(wil, "invalid oob_mode: %d\n", mode); 671 } 672 } 673 674 static int wil_target_reset(struct wil6210_priv *wil) 675 { 676 int delay = 0; 677 u32 x, x1 = 0; 678 679 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 680 681 /* Clear MAC link up */ 682 wil_s(wil, RGF_HP_CTRL, BIT(15)); 683 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 684 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 685 686 wil_halt_cpu(wil); 687 688 /* clear all boot loader "ready" bits */ 689 wil_w(wil, RGF_USER_BL + 690 offsetof(struct bl_dedicated_registers_v0, boot_loader_ready), 0); 691 /* Clear Fw Download notification */ 692 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 693 694 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 695 /* XTAL stabilization should take about 3ms */ 696 usleep_range(5000, 7000); 697 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 698 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 699 wil_err(wil, "Xtal stabilization timeout\n" 700 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 701 return -ETIME; 702 } 703 /* switch 10k to XTAL*/ 704 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 705 /* 40 MHz */ 706 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 707 708 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 709 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 710 711 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 712 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 713 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 714 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 715 716 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 717 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 718 719 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 720 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 721 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 722 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 723 724 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 725 /* reset A2 PCIE AHB */ 726 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 727 728 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 729 730 /* wait until device ready. typical time is 20..80 msec */ 731 do { 732 msleep(RST_DELAY); 733 x = wil_r(wil, RGF_USER_BL + 734 offsetof(struct bl_dedicated_registers_v0, 735 boot_loader_ready)); 736 if (x1 != x) { 737 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x); 738 x1 = x; 739 } 740 if (delay++ > RST_COUNT) { 741 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 742 x); 743 return -ETIME; 744 } 745 } while (x != BL_READY); 746 747 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 748 749 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 750 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 751 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 752 753 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 754 return 0; 755 } 756 757 static void wil_collect_fw_info(struct wil6210_priv *wil) 758 { 759 struct wiphy *wiphy = wil_to_wiphy(wil); 760 u8 retry_short; 761 int rc; 762 763 rc = wmi_get_mgmt_retry(wil, &retry_short); 764 if (!rc) { 765 wiphy->retry_short = retry_short; 766 wil_dbg_misc(wil, "FW retry_short: %d\n", retry_short); 767 } 768 } 769 770 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 771 { 772 le32_to_cpus(&r->base); 773 le16_to_cpus(&r->entry_size); 774 le16_to_cpus(&r->size); 775 le32_to_cpus(&r->tail); 776 le32_to_cpus(&r->head); 777 } 778 779 static int wil_get_bl_info(struct wil6210_priv *wil) 780 { 781 struct net_device *ndev = wil_to_ndev(wil); 782 struct wiphy *wiphy = wil_to_wiphy(wil); 783 union { 784 struct bl_dedicated_registers_v0 bl0; 785 struct bl_dedicated_registers_v1 bl1; 786 } bl; 787 u32 bl_ver; 788 u8 *mac; 789 u16 rf_status; 790 791 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 792 sizeof(bl)); 793 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 794 mac = bl.bl0.mac_address; 795 796 if (bl_ver == 0) { 797 le32_to_cpus(&bl.bl0.rf_type); 798 le32_to_cpus(&bl.bl0.baseband_type); 799 rf_status = 0; /* actually, unknown */ 800 wil_info(wil, 801 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 802 bl_ver, mac, 803 bl.bl0.rf_type, bl.bl0.baseband_type); 804 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 805 } else { 806 le16_to_cpus(&bl.bl1.rf_type); 807 rf_status = le16_to_cpu(bl.bl1.rf_status); 808 le32_to_cpus(&bl.bl1.baseband_type); 809 le16_to_cpus(&bl.bl1.bl_version_subminor); 810 le16_to_cpus(&bl.bl1.bl_version_build); 811 wil_info(wil, 812 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 813 bl_ver, mac, 814 bl.bl1.rf_type, rf_status, 815 bl.bl1.baseband_type); 816 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 817 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 818 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 819 } 820 821 if (!is_valid_ether_addr(mac)) { 822 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 823 return -EINVAL; 824 } 825 826 ether_addr_copy(ndev->perm_addr, mac); 827 ether_addr_copy(wiphy->perm_addr, mac); 828 if (!is_valid_ether_addr(ndev->dev_addr)) 829 ether_addr_copy(ndev->dev_addr, mac); 830 831 if (rf_status) {/* bad RF cable? */ 832 wil_err(wil, "RF communication error 0x%04x", 833 rf_status); 834 return -EAGAIN; 835 } 836 837 return 0; 838 } 839 840 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 841 { 842 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 843 u32 bl_ver = wil_r(wil, RGF_USER_BL + 844 offsetof(struct bl_dedicated_registers_v0, 845 boot_loader_struct_version)); 846 847 if (bl_ver < 2) 848 return; 849 850 bl_assert_code = wil_r(wil, RGF_USER_BL + 851 offsetof(struct bl_dedicated_registers_v1, 852 bl_assert_code)); 853 bl_assert_blink = wil_r(wil, RGF_USER_BL + 854 offsetof(struct bl_dedicated_registers_v1, 855 bl_assert_blink)); 856 bl_magic_number = wil_r(wil, RGF_USER_BL + 857 offsetof(struct bl_dedicated_registers_v1, 858 bl_magic_number)); 859 860 if (is_err) { 861 wil_err(wil, 862 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 863 bl_assert_code, bl_assert_blink, bl_magic_number); 864 } else { 865 wil_dbg_misc(wil, 866 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 867 bl_assert_code, bl_assert_blink, bl_magic_number); 868 } 869 } 870 871 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 872 { 873 ulong to = msecs_to_jiffies(1000); 874 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 875 876 if (0 == left) { 877 wil_err(wil, "Firmware not ready\n"); 878 return -ETIME; 879 } else { 880 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 881 jiffies_to_msecs(to-left), wil->hw_version); 882 } 883 return 0; 884 } 885 886 void wil_abort_scan(struct wil6210_priv *wil, bool sync) 887 { 888 int rc; 889 struct cfg80211_scan_info info = { 890 .aborted = true, 891 }; 892 893 lockdep_assert_held(&wil->p2p_wdev_mutex); 894 895 if (!wil->scan_request) 896 return; 897 898 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", wil->scan_request); 899 del_timer_sync(&wil->scan_timer); 900 mutex_unlock(&wil->p2p_wdev_mutex); 901 rc = wmi_abort_scan(wil); 902 if (!rc && sync) 903 wait_event_interruptible_timeout(wil->wq, !wil->scan_request, 904 msecs_to_jiffies( 905 WAIT_FOR_SCAN_ABORT_MS)); 906 907 mutex_lock(&wil->p2p_wdev_mutex); 908 if (wil->scan_request) { 909 cfg80211_scan_done(wil->scan_request, &info); 910 wil->scan_request = NULL; 911 } 912 } 913 914 int wil_ps_update(struct wil6210_priv *wil, enum wmi_ps_profile_type ps_profile) 915 { 916 int rc; 917 918 if (!test_bit(WMI_FW_CAPABILITY_PS_CONFIG, wil->fw_capabilities)) { 919 wil_err(wil, "set_power_mgmt not supported\n"); 920 return -EOPNOTSUPP; 921 } 922 923 rc = wmi_ps_dev_profile_cfg(wil, ps_profile); 924 if (rc) 925 wil_err(wil, "wmi_ps_dev_profile_cfg failed (%d)\n", rc); 926 else 927 wil->ps_profile = ps_profile; 928 929 return rc; 930 } 931 932 static void wil_pre_fw_config(struct wil6210_priv *wil) 933 { 934 /* Mark FW as loaded from host */ 935 wil_s(wil, RGF_USER_USAGE_6, 1); 936 937 /* clear any interrupts which on-card-firmware 938 * may have set 939 */ 940 wil6210_clear_irq(wil); 941 /* CAF_ICR - clear and mask */ 942 /* it is W1C, clear by writing back same value */ 943 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 944 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 945 /* clear PAL_UNIT_ICR (potential D0->D3 leftover) */ 946 wil_s(wil, RGF_PAL_UNIT_ICR + offsetof(struct RGF_ICR, ICR), 0); 947 948 if (wil->fw_calib_result > 0) { 949 __le32 val = cpu_to_le32(wil->fw_calib_result | 950 (CALIB_RESULT_SIGNATURE << 8)); 951 wil_w(wil, RGF_USER_FW_CALIB_RESULT, (u32 __force)val); 952 } 953 } 954 955 /* 956 * We reset all the structures, and we reset the UMAC. 957 * After calling this routine, you're expected to reload 958 * the firmware. 959 */ 960 int wil_reset(struct wil6210_priv *wil, bool load_fw) 961 { 962 int rc; 963 964 wil_dbg_misc(wil, "reset\n"); 965 966 WARN_ON(!mutex_is_locked(&wil->mutex)); 967 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 968 969 if (debug_fw) { 970 static const u8 mac[ETH_ALEN] = { 971 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 972 }; 973 struct net_device *ndev = wil_to_ndev(wil); 974 975 ether_addr_copy(ndev->perm_addr, mac); 976 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 977 return 0; 978 } 979 980 if (wil->hw_version == HW_VER_UNKNOWN) 981 return -ENODEV; 982 983 if (wil->platform_ops.notify) { 984 rc = wil->platform_ops.notify(wil->platform_handle, 985 WIL_PLATFORM_EVT_PRE_RESET); 986 if (rc) 987 wil_err(wil, "PRE_RESET platform notify failed, rc %d\n", 988 rc); 989 } 990 991 set_bit(wil_status_resetting, wil->status); 992 993 cancel_work_sync(&wil->disconnect_worker); 994 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 995 wil_bcast_fini(wil); 996 997 /* Disable device led before reset*/ 998 wmi_led_cfg(wil, false); 999 1000 mutex_lock(&wil->p2p_wdev_mutex); 1001 wil_abort_scan(wil, false); 1002 mutex_unlock(&wil->p2p_wdev_mutex); 1003 1004 /* prevent NAPI from being scheduled and prevent wmi commands */ 1005 mutex_lock(&wil->wmi_mutex); 1006 bitmap_zero(wil->status, wil_status_last); 1007 mutex_unlock(&wil->wmi_mutex); 1008 1009 wil_mask_irq(wil); 1010 1011 wmi_event_flush(wil); 1012 1013 flush_workqueue(wil->wq_service); 1014 flush_workqueue(wil->wmi_wq); 1015 1016 wil_bl_crash_info(wil, false); 1017 wil_disable_irq(wil); 1018 rc = wil_target_reset(wil); 1019 wil6210_clear_irq(wil); 1020 wil_enable_irq(wil); 1021 wil_rx_fini(wil); 1022 if (rc) { 1023 wil_bl_crash_info(wil, true); 1024 return rc; 1025 } 1026 1027 rc = wil_get_bl_info(wil); 1028 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */ 1029 rc = 0; 1030 if (rc) 1031 return rc; 1032 1033 wil_set_oob_mode(wil, oob_mode); 1034 if (load_fw) { 1035 wil_info(wil, "Use firmware <%s> + board <%s>\n", 1036 wil->wil_fw_name, WIL_BOARD_FILE_NAME); 1037 1038 wil_halt_cpu(wil); 1039 memset(wil->fw_version, 0, sizeof(wil->fw_version)); 1040 /* Loading f/w from the file */ 1041 rc = wil_request_firmware(wil, wil->wil_fw_name, true); 1042 if (rc) 1043 return rc; 1044 rc = wil_request_firmware(wil, WIL_BOARD_FILE_NAME, true); 1045 if (rc) 1046 return rc; 1047 1048 wil_pre_fw_config(wil); 1049 wil_release_cpu(wil); 1050 } 1051 1052 /* init after reset */ 1053 wil->ap_isolate = 0; 1054 reinit_completion(&wil->wmi_ready); 1055 reinit_completion(&wil->wmi_call); 1056 reinit_completion(&wil->halp.comp); 1057 1058 if (load_fw) { 1059 wil_configure_interrupt_moderation(wil); 1060 wil_unmask_irq(wil); 1061 1062 /* we just started MAC, wait for FW ready */ 1063 rc = wil_wait_for_fw_ready(wil); 1064 if (rc) 1065 return rc; 1066 1067 /* check FW is responsive */ 1068 rc = wmi_echo(wil); 1069 if (rc) { 1070 wil_err(wil, "wmi_echo failed, rc %d\n", rc); 1071 return rc; 1072 } 1073 1074 if (wil->ps_profile != WMI_PS_PROFILE_TYPE_DEFAULT) 1075 wil_ps_update(wil, wil->ps_profile); 1076 1077 wil_collect_fw_info(wil); 1078 1079 if (wil->platform_ops.notify) { 1080 rc = wil->platform_ops.notify(wil->platform_handle, 1081 WIL_PLATFORM_EVT_FW_RDY); 1082 if (rc) { 1083 wil_err(wil, "FW_RDY notify failed, rc %d\n", 1084 rc); 1085 rc = 0; 1086 } 1087 } 1088 } 1089 1090 return rc; 1091 } 1092 1093 void wil_fw_error_recovery(struct wil6210_priv *wil) 1094 { 1095 wil_dbg_misc(wil, "starting fw error recovery\n"); 1096 1097 if (test_bit(wil_status_resetting, wil->status)) { 1098 wil_info(wil, "Reset already in progress\n"); 1099 return; 1100 } 1101 1102 wil->recovery_state = fw_recovery_pending; 1103 schedule_work(&wil->fw_error_worker); 1104 } 1105 1106 int __wil_up(struct wil6210_priv *wil) 1107 { 1108 struct net_device *ndev = wil_to_ndev(wil); 1109 struct wireless_dev *wdev = wil->wdev; 1110 int rc; 1111 1112 WARN_ON(!mutex_is_locked(&wil->mutex)); 1113 1114 rc = wil_reset(wil, true); 1115 if (rc) 1116 return rc; 1117 1118 /* Rx VRING. After MAC and beacon */ 1119 rc = wil_rx_init(wil, 1 << rx_ring_order); 1120 if (rc) 1121 return rc; 1122 1123 switch (wdev->iftype) { 1124 case NL80211_IFTYPE_STATION: 1125 wil_dbg_misc(wil, "type: STATION\n"); 1126 ndev->type = ARPHRD_ETHER; 1127 break; 1128 case NL80211_IFTYPE_AP: 1129 wil_dbg_misc(wil, "type: AP\n"); 1130 ndev->type = ARPHRD_ETHER; 1131 break; 1132 case NL80211_IFTYPE_P2P_CLIENT: 1133 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 1134 ndev->type = ARPHRD_ETHER; 1135 break; 1136 case NL80211_IFTYPE_P2P_GO: 1137 wil_dbg_misc(wil, "type: P2P_GO\n"); 1138 ndev->type = ARPHRD_ETHER; 1139 break; 1140 case NL80211_IFTYPE_MONITOR: 1141 wil_dbg_misc(wil, "type: Monitor\n"); 1142 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 1143 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 1144 break; 1145 default: 1146 return -EOPNOTSUPP; 1147 } 1148 1149 /* MAC address - pre-requisite for other commands */ 1150 wmi_set_mac_address(wil, ndev->dev_addr); 1151 1152 wil_dbg_misc(wil, "NAPI enable\n"); 1153 napi_enable(&wil->napi_rx); 1154 napi_enable(&wil->napi_tx); 1155 set_bit(wil_status_napi_en, wil->status); 1156 1157 wil6210_bus_request(wil, WIL_DEFAULT_BUS_REQUEST_KBPS); 1158 1159 return 0; 1160 } 1161 1162 int wil_up(struct wil6210_priv *wil) 1163 { 1164 int rc; 1165 1166 wil_dbg_misc(wil, "up\n"); 1167 1168 mutex_lock(&wil->mutex); 1169 rc = __wil_up(wil); 1170 mutex_unlock(&wil->mutex); 1171 1172 return rc; 1173 } 1174 1175 int __wil_down(struct wil6210_priv *wil) 1176 { 1177 WARN_ON(!mutex_is_locked(&wil->mutex)); 1178 1179 set_bit(wil_status_resetting, wil->status); 1180 1181 wil6210_bus_request(wil, 0); 1182 1183 wil_disable_irq(wil); 1184 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 1185 napi_disable(&wil->napi_rx); 1186 napi_disable(&wil->napi_tx); 1187 wil_dbg_misc(wil, "NAPI disable\n"); 1188 } 1189 wil_enable_irq(wil); 1190 1191 mutex_lock(&wil->p2p_wdev_mutex); 1192 wil_p2p_stop_radio_operations(wil); 1193 wil_abort_scan(wil, false); 1194 mutex_unlock(&wil->p2p_wdev_mutex); 1195 1196 wil_reset(wil, false); 1197 1198 return 0; 1199 } 1200 1201 int wil_down(struct wil6210_priv *wil) 1202 { 1203 int rc; 1204 1205 wil_dbg_misc(wil, "down\n"); 1206 1207 wil_set_recovery_state(wil, fw_recovery_idle); 1208 mutex_lock(&wil->mutex); 1209 rc = __wil_down(wil); 1210 mutex_unlock(&wil->mutex); 1211 1212 return rc; 1213 } 1214 1215 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 1216 { 1217 int i; 1218 int rc = -ENOENT; 1219 1220 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1221 if ((wil->sta[i].status != wil_sta_unused) && 1222 ether_addr_equal(wil->sta[i].addr, mac)) { 1223 rc = i; 1224 break; 1225 } 1226 } 1227 1228 return rc; 1229 } 1230 1231 void wil_halp_vote(struct wil6210_priv *wil) 1232 { 1233 unsigned long rc; 1234 unsigned long to_jiffies = msecs_to_jiffies(WAIT_FOR_HALP_VOTE_MS); 1235 1236 mutex_lock(&wil->halp.lock); 1237 1238 wil_dbg_irq(wil, "halp_vote: start, HALP ref_cnt (%d)\n", 1239 wil->halp.ref_cnt); 1240 1241 if (++wil->halp.ref_cnt == 1) { 1242 reinit_completion(&wil->halp.comp); 1243 wil6210_set_halp(wil); 1244 rc = wait_for_completion_timeout(&wil->halp.comp, to_jiffies); 1245 if (!rc) { 1246 wil_err(wil, "HALP vote timed out\n"); 1247 /* Mask HALP as done in case the interrupt is raised */ 1248 wil6210_mask_halp(wil); 1249 } else { 1250 wil_dbg_irq(wil, 1251 "halp_vote: HALP vote completed after %d ms\n", 1252 jiffies_to_msecs(to_jiffies - rc)); 1253 } 1254 } 1255 1256 wil_dbg_irq(wil, "halp_vote: end, HALP ref_cnt (%d)\n", 1257 wil->halp.ref_cnt); 1258 1259 mutex_unlock(&wil->halp.lock); 1260 } 1261 1262 void wil_halp_unvote(struct wil6210_priv *wil) 1263 { 1264 WARN_ON(wil->halp.ref_cnt == 0); 1265 1266 mutex_lock(&wil->halp.lock); 1267 1268 wil_dbg_irq(wil, "halp_unvote: start, HALP ref_cnt (%d)\n", 1269 wil->halp.ref_cnt); 1270 1271 if (--wil->halp.ref_cnt == 0) { 1272 wil6210_clear_halp(wil); 1273 wil_dbg_irq(wil, "HALP unvote\n"); 1274 } 1275 1276 wil_dbg_irq(wil, "halp_unvote:end, HALP ref_cnt (%d)\n", 1277 wil->halp.ref_cnt); 1278 1279 mutex_unlock(&wil->halp.lock); 1280 } 1281