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(ulong x) 340 { 341 struct wil6210_priv *wil = (void *)x; 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(ulong x) 355 { 356 struct wil6210_priv *wil = (void *)x; 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 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 544 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 545 setup_timer(&wil->p2p.discovery_timer, wil_p2p_discovery_timer_fn, 546 (ulong)wil); 547 548 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 549 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 550 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 551 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker); 552 INIT_WORK(&wil->p2p.delayed_listen_work, wil_p2p_delayed_listen_work); 553 554 INIT_LIST_HEAD(&wil->pending_wmi_ev); 555 INIT_LIST_HEAD(&wil->probe_client_pending); 556 spin_lock_init(&wil->wmi_ev_lock); 557 spin_lock_init(&wil->net_queue_lock); 558 wil->net_queue_stopped = 1; 559 init_waitqueue_head(&wil->wq); 560 561 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 562 if (!wil->wmi_wq) 563 return -EAGAIN; 564 565 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 566 if (!wil->wq_service) 567 goto out_wmi_wq; 568 569 wil->last_fw_recovery = jiffies; 570 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 571 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 572 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 573 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 574 575 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 576 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 577 578 wil->ps_profile = WMI_PS_PROFILE_TYPE_DEFAULT; 579 580 wil->wakeup_trigger = WMI_WAKEUP_TRIGGER_UCAST | 581 WMI_WAKEUP_TRIGGER_BCAST; 582 memset(&wil->suspend_stats, 0, sizeof(wil->suspend_stats)); 583 wil->suspend_stats.min_suspend_time = ULONG_MAX; 584 wil->vring_idle_trsh = 16; 585 586 return 0; 587 588 out_wmi_wq: 589 destroy_workqueue(wil->wmi_wq); 590 591 return -EAGAIN; 592 } 593 594 void wil6210_bus_request(struct wil6210_priv *wil, u32 kbps) 595 { 596 if (wil->platform_ops.bus_request) { 597 wil->bus_request_kbps = kbps; 598 wil->platform_ops.bus_request(wil->platform_handle, kbps); 599 } 600 } 601 602 /** 603 * wil6210_disconnect - disconnect one connection 604 * @wil: driver context 605 * @bssid: peer to disconnect, NULL to disconnect all 606 * @reason_code: Reason code for the Disassociation frame 607 * @from_event: whether is invoked from FW event handler 608 * 609 * Disconnect and release associated resources. If invoked not from the 610 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 611 */ 612 void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 613 u16 reason_code, bool from_event) 614 { 615 wil_dbg_misc(wil, "disconnect\n"); 616 617 del_timer_sync(&wil->connect_timer); 618 _wil6210_disconnect(wil, bssid, reason_code, from_event); 619 } 620 621 void wil_priv_deinit(struct wil6210_priv *wil) 622 { 623 wil_dbg_misc(wil, "priv_deinit\n"); 624 625 wil_set_recovery_state(wil, fw_recovery_idle); 626 del_timer_sync(&wil->scan_timer); 627 del_timer_sync(&wil->p2p.discovery_timer); 628 cancel_work_sync(&wil->disconnect_worker); 629 cancel_work_sync(&wil->fw_error_worker); 630 cancel_work_sync(&wil->p2p.discovery_expired_work); 631 cancel_work_sync(&wil->p2p.delayed_listen_work); 632 mutex_lock(&wil->mutex); 633 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 634 mutex_unlock(&wil->mutex); 635 wmi_event_flush(wil); 636 wil_probe_client_flush(wil); 637 cancel_work_sync(&wil->probe_client_worker); 638 destroy_workqueue(wil->wq_service); 639 destroy_workqueue(wil->wmi_wq); 640 } 641 642 static inline void wil_halt_cpu(struct wil6210_priv *wil) 643 { 644 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 645 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 646 } 647 648 static inline void wil_release_cpu(struct wil6210_priv *wil) 649 { 650 /* Start CPU */ 651 wil_w(wil, RGF_USER_USER_CPU_0, 1); 652 } 653 654 static void wil_set_oob_mode(struct wil6210_priv *wil, u8 mode) 655 { 656 wil_info(wil, "oob_mode to %d\n", mode); 657 switch (mode) { 658 case 0: 659 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE | 660 BIT_USER_OOB_R2_MODE); 661 break; 662 case 1: 663 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 664 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 665 break; 666 case 2: 667 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 668 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 669 break; 670 default: 671 wil_err(wil, "invalid oob_mode: %d\n", mode); 672 } 673 } 674 675 static int wil_target_reset(struct wil6210_priv *wil) 676 { 677 int delay = 0; 678 u32 x, x1 = 0; 679 680 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 681 682 /* Clear MAC link up */ 683 wil_s(wil, RGF_HP_CTRL, BIT(15)); 684 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 685 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 686 687 wil_halt_cpu(wil); 688 689 /* clear all boot loader "ready" bits */ 690 wil_w(wil, RGF_USER_BL + 691 offsetof(struct bl_dedicated_registers_v0, boot_loader_ready), 0); 692 /* Clear Fw Download notification */ 693 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 694 695 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 696 /* XTAL stabilization should take about 3ms */ 697 usleep_range(5000, 7000); 698 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 699 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 700 wil_err(wil, "Xtal stabilization timeout\n" 701 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 702 return -ETIME; 703 } 704 /* switch 10k to XTAL*/ 705 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 706 /* 40 MHz */ 707 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 708 709 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 710 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 711 712 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 713 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 714 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 715 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 716 717 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 718 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 719 720 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 721 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 722 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 723 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 724 725 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 726 /* reset A2 PCIE AHB */ 727 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 728 729 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 730 731 /* wait until device ready. typical time is 20..80 msec */ 732 do { 733 msleep(RST_DELAY); 734 x = wil_r(wil, RGF_USER_BL + 735 offsetof(struct bl_dedicated_registers_v0, 736 boot_loader_ready)); 737 if (x1 != x) { 738 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x); 739 x1 = x; 740 } 741 if (delay++ > RST_COUNT) { 742 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 743 x); 744 return -ETIME; 745 } 746 } while (x != BL_READY); 747 748 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 749 750 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 751 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 752 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 753 754 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 755 return 0; 756 } 757 758 static void wil_collect_fw_info(struct wil6210_priv *wil) 759 { 760 struct wiphy *wiphy = wil_to_wiphy(wil); 761 u8 retry_short; 762 int rc; 763 764 rc = wmi_get_mgmt_retry(wil, &retry_short); 765 if (!rc) { 766 wiphy->retry_short = retry_short; 767 wil_dbg_misc(wil, "FW retry_short: %d\n", retry_short); 768 } 769 } 770 771 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 772 { 773 le32_to_cpus(&r->base); 774 le16_to_cpus(&r->entry_size); 775 le16_to_cpus(&r->size); 776 le32_to_cpus(&r->tail); 777 le32_to_cpus(&r->head); 778 } 779 780 static int wil_get_bl_info(struct wil6210_priv *wil) 781 { 782 struct net_device *ndev = wil_to_ndev(wil); 783 struct wiphy *wiphy = wil_to_wiphy(wil); 784 union { 785 struct bl_dedicated_registers_v0 bl0; 786 struct bl_dedicated_registers_v1 bl1; 787 } bl; 788 u32 bl_ver; 789 u8 *mac; 790 u16 rf_status; 791 792 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 793 sizeof(bl)); 794 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 795 mac = bl.bl0.mac_address; 796 797 if (bl_ver == 0) { 798 le32_to_cpus(&bl.bl0.rf_type); 799 le32_to_cpus(&bl.bl0.baseband_type); 800 rf_status = 0; /* actually, unknown */ 801 wil_info(wil, 802 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 803 bl_ver, mac, 804 bl.bl0.rf_type, bl.bl0.baseband_type); 805 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 806 } else { 807 le16_to_cpus(&bl.bl1.rf_type); 808 rf_status = le16_to_cpu(bl.bl1.rf_status); 809 le32_to_cpus(&bl.bl1.baseband_type); 810 le16_to_cpus(&bl.bl1.bl_version_subminor); 811 le16_to_cpus(&bl.bl1.bl_version_build); 812 wil_info(wil, 813 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 814 bl_ver, mac, 815 bl.bl1.rf_type, rf_status, 816 bl.bl1.baseband_type); 817 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 818 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 819 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 820 } 821 822 if (!is_valid_ether_addr(mac)) { 823 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 824 return -EINVAL; 825 } 826 827 ether_addr_copy(ndev->perm_addr, mac); 828 ether_addr_copy(wiphy->perm_addr, mac); 829 if (!is_valid_ether_addr(ndev->dev_addr)) 830 ether_addr_copy(ndev->dev_addr, mac); 831 832 if (rf_status) {/* bad RF cable? */ 833 wil_err(wil, "RF communication error 0x%04x", 834 rf_status); 835 return -EAGAIN; 836 } 837 838 return 0; 839 } 840 841 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 842 { 843 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 844 u32 bl_ver = wil_r(wil, RGF_USER_BL + 845 offsetof(struct bl_dedicated_registers_v0, 846 boot_loader_struct_version)); 847 848 if (bl_ver < 2) 849 return; 850 851 bl_assert_code = wil_r(wil, RGF_USER_BL + 852 offsetof(struct bl_dedicated_registers_v1, 853 bl_assert_code)); 854 bl_assert_blink = wil_r(wil, RGF_USER_BL + 855 offsetof(struct bl_dedicated_registers_v1, 856 bl_assert_blink)); 857 bl_magic_number = wil_r(wil, RGF_USER_BL + 858 offsetof(struct bl_dedicated_registers_v1, 859 bl_magic_number)); 860 861 if (is_err) { 862 wil_err(wil, 863 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 864 bl_assert_code, bl_assert_blink, bl_magic_number); 865 } else { 866 wil_dbg_misc(wil, 867 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 868 bl_assert_code, bl_assert_blink, bl_magic_number); 869 } 870 } 871 872 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 873 { 874 ulong to = msecs_to_jiffies(1000); 875 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 876 877 if (0 == left) { 878 wil_err(wil, "Firmware not ready\n"); 879 return -ETIME; 880 } else { 881 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 882 jiffies_to_msecs(to-left), wil->hw_version); 883 } 884 return 0; 885 } 886 887 void wil_abort_scan(struct wil6210_priv *wil, bool sync) 888 { 889 int rc; 890 struct cfg80211_scan_info info = { 891 .aborted = true, 892 }; 893 894 lockdep_assert_held(&wil->p2p_wdev_mutex); 895 896 if (!wil->scan_request) 897 return; 898 899 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", wil->scan_request); 900 del_timer_sync(&wil->scan_timer); 901 mutex_unlock(&wil->p2p_wdev_mutex); 902 rc = wmi_abort_scan(wil); 903 if (!rc && sync) 904 wait_event_interruptible_timeout(wil->wq, !wil->scan_request, 905 msecs_to_jiffies( 906 WAIT_FOR_SCAN_ABORT_MS)); 907 908 mutex_lock(&wil->p2p_wdev_mutex); 909 if (wil->scan_request) { 910 cfg80211_scan_done(wil->scan_request, &info); 911 wil->scan_request = NULL; 912 } 913 } 914 915 int wil_ps_update(struct wil6210_priv *wil, enum wmi_ps_profile_type ps_profile) 916 { 917 int rc; 918 919 if (!test_bit(WMI_FW_CAPABILITY_PS_CONFIG, wil->fw_capabilities)) { 920 wil_err(wil, "set_power_mgmt not supported\n"); 921 return -EOPNOTSUPP; 922 } 923 924 rc = wmi_ps_dev_profile_cfg(wil, ps_profile); 925 if (rc) 926 wil_err(wil, "wmi_ps_dev_profile_cfg failed (%d)\n", rc); 927 else 928 wil->ps_profile = ps_profile; 929 930 return rc; 931 } 932 933 static void wil_pre_fw_config(struct wil6210_priv *wil) 934 { 935 /* Mark FW as loaded from host */ 936 wil_s(wil, RGF_USER_USAGE_6, 1); 937 938 /* clear any interrupts which on-card-firmware 939 * may have set 940 */ 941 wil6210_clear_irq(wil); 942 /* CAF_ICR - clear and mask */ 943 /* it is W1C, clear by writing back same value */ 944 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 945 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 946 /* clear PAL_UNIT_ICR (potential D0->D3 leftover) */ 947 wil_s(wil, RGF_PAL_UNIT_ICR + offsetof(struct RGF_ICR, ICR), 0); 948 949 if (wil->fw_calib_result > 0) { 950 __le32 val = cpu_to_le32(wil->fw_calib_result | 951 (CALIB_RESULT_SIGNATURE << 8)); 952 wil_w(wil, RGF_USER_FW_CALIB_RESULT, (u32 __force)val); 953 } 954 } 955 956 /* 957 * We reset all the structures, and we reset the UMAC. 958 * After calling this routine, you're expected to reload 959 * the firmware. 960 */ 961 int wil_reset(struct wil6210_priv *wil, bool load_fw) 962 { 963 int rc; 964 965 wil_dbg_misc(wil, "reset\n"); 966 967 WARN_ON(!mutex_is_locked(&wil->mutex)); 968 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 969 970 if (debug_fw) { 971 static const u8 mac[ETH_ALEN] = { 972 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 973 }; 974 struct net_device *ndev = wil_to_ndev(wil); 975 976 ether_addr_copy(ndev->perm_addr, mac); 977 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 978 return 0; 979 } 980 981 if (wil->hw_version == HW_VER_UNKNOWN) 982 return -ENODEV; 983 984 if (wil->platform_ops.notify) { 985 rc = wil->platform_ops.notify(wil->platform_handle, 986 WIL_PLATFORM_EVT_PRE_RESET); 987 if (rc) 988 wil_err(wil, "PRE_RESET platform notify failed, rc %d\n", 989 rc); 990 } 991 992 set_bit(wil_status_resetting, wil->status); 993 994 cancel_work_sync(&wil->disconnect_worker); 995 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 996 wil_bcast_fini(wil); 997 998 /* Disable device led before reset*/ 999 wmi_led_cfg(wil, false); 1000 1001 mutex_lock(&wil->p2p_wdev_mutex); 1002 wil_abort_scan(wil, false); 1003 mutex_unlock(&wil->p2p_wdev_mutex); 1004 1005 /* prevent NAPI from being scheduled and prevent wmi commands */ 1006 mutex_lock(&wil->wmi_mutex); 1007 bitmap_zero(wil->status, wil_status_last); 1008 mutex_unlock(&wil->wmi_mutex); 1009 1010 wil_mask_irq(wil); 1011 1012 wmi_event_flush(wil); 1013 1014 flush_workqueue(wil->wq_service); 1015 flush_workqueue(wil->wmi_wq); 1016 1017 wil_bl_crash_info(wil, false); 1018 wil_disable_irq(wil); 1019 rc = wil_target_reset(wil); 1020 wil6210_clear_irq(wil); 1021 wil_enable_irq(wil); 1022 wil_rx_fini(wil); 1023 if (rc) { 1024 wil_bl_crash_info(wil, true); 1025 return rc; 1026 } 1027 1028 rc = wil_get_bl_info(wil); 1029 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */ 1030 rc = 0; 1031 if (rc) 1032 return rc; 1033 1034 wil_set_oob_mode(wil, oob_mode); 1035 if (load_fw) { 1036 wil_info(wil, "Use firmware <%s> + board <%s>\n", 1037 wil->wil_fw_name, WIL_BOARD_FILE_NAME); 1038 1039 wil_halt_cpu(wil); 1040 memset(wil->fw_version, 0, sizeof(wil->fw_version)); 1041 /* Loading f/w from the file */ 1042 rc = wil_request_firmware(wil, wil->wil_fw_name, true); 1043 if (rc) 1044 return rc; 1045 rc = wil_request_firmware(wil, WIL_BOARD_FILE_NAME, true); 1046 if (rc) 1047 return rc; 1048 1049 wil_pre_fw_config(wil); 1050 wil_release_cpu(wil); 1051 } 1052 1053 /* init after reset */ 1054 wil->ap_isolate = 0; 1055 reinit_completion(&wil->wmi_ready); 1056 reinit_completion(&wil->wmi_call); 1057 reinit_completion(&wil->halp.comp); 1058 1059 if (load_fw) { 1060 wil_configure_interrupt_moderation(wil); 1061 wil_unmask_irq(wil); 1062 1063 /* we just started MAC, wait for FW ready */ 1064 rc = wil_wait_for_fw_ready(wil); 1065 if (rc) 1066 return rc; 1067 1068 /* check FW is responsive */ 1069 rc = wmi_echo(wil); 1070 if (rc) { 1071 wil_err(wil, "wmi_echo failed, rc %d\n", rc); 1072 return rc; 1073 } 1074 1075 if (wil->ps_profile != WMI_PS_PROFILE_TYPE_DEFAULT) 1076 wil_ps_update(wil, wil->ps_profile); 1077 1078 wil_collect_fw_info(wil); 1079 1080 if (wil->platform_ops.notify) { 1081 rc = wil->platform_ops.notify(wil->platform_handle, 1082 WIL_PLATFORM_EVT_FW_RDY); 1083 if (rc) { 1084 wil_err(wil, "FW_RDY notify failed, rc %d\n", 1085 rc); 1086 rc = 0; 1087 } 1088 } 1089 } 1090 1091 return rc; 1092 } 1093 1094 void wil_fw_error_recovery(struct wil6210_priv *wil) 1095 { 1096 wil_dbg_misc(wil, "starting fw error recovery\n"); 1097 1098 if (test_bit(wil_status_resetting, wil->status)) { 1099 wil_info(wil, "Reset already in progress\n"); 1100 return; 1101 } 1102 1103 wil->recovery_state = fw_recovery_pending; 1104 schedule_work(&wil->fw_error_worker); 1105 } 1106 1107 int __wil_up(struct wil6210_priv *wil) 1108 { 1109 struct net_device *ndev = wil_to_ndev(wil); 1110 struct wireless_dev *wdev = wil->wdev; 1111 int rc; 1112 1113 WARN_ON(!mutex_is_locked(&wil->mutex)); 1114 1115 rc = wil_reset(wil, true); 1116 if (rc) 1117 return rc; 1118 1119 /* Rx VRING. After MAC and beacon */ 1120 rc = wil_rx_init(wil, 1 << rx_ring_order); 1121 if (rc) 1122 return rc; 1123 1124 switch (wdev->iftype) { 1125 case NL80211_IFTYPE_STATION: 1126 wil_dbg_misc(wil, "type: STATION\n"); 1127 ndev->type = ARPHRD_ETHER; 1128 break; 1129 case NL80211_IFTYPE_AP: 1130 wil_dbg_misc(wil, "type: AP\n"); 1131 ndev->type = ARPHRD_ETHER; 1132 break; 1133 case NL80211_IFTYPE_P2P_CLIENT: 1134 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 1135 ndev->type = ARPHRD_ETHER; 1136 break; 1137 case NL80211_IFTYPE_P2P_GO: 1138 wil_dbg_misc(wil, "type: P2P_GO\n"); 1139 ndev->type = ARPHRD_ETHER; 1140 break; 1141 case NL80211_IFTYPE_MONITOR: 1142 wil_dbg_misc(wil, "type: Monitor\n"); 1143 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 1144 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 1145 break; 1146 default: 1147 return -EOPNOTSUPP; 1148 } 1149 1150 /* MAC address - pre-requisite for other commands */ 1151 wmi_set_mac_address(wil, ndev->dev_addr); 1152 1153 wil_dbg_misc(wil, "NAPI enable\n"); 1154 napi_enable(&wil->napi_rx); 1155 napi_enable(&wil->napi_tx); 1156 set_bit(wil_status_napi_en, wil->status); 1157 1158 wil6210_bus_request(wil, WIL_DEFAULT_BUS_REQUEST_KBPS); 1159 1160 return 0; 1161 } 1162 1163 int wil_up(struct wil6210_priv *wil) 1164 { 1165 int rc; 1166 1167 wil_dbg_misc(wil, "up\n"); 1168 1169 mutex_lock(&wil->mutex); 1170 rc = __wil_up(wil); 1171 mutex_unlock(&wil->mutex); 1172 1173 return rc; 1174 } 1175 1176 int __wil_down(struct wil6210_priv *wil) 1177 { 1178 WARN_ON(!mutex_is_locked(&wil->mutex)); 1179 1180 set_bit(wil_status_resetting, wil->status); 1181 1182 wil6210_bus_request(wil, 0); 1183 1184 wil_disable_irq(wil); 1185 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 1186 napi_disable(&wil->napi_rx); 1187 napi_disable(&wil->napi_tx); 1188 wil_dbg_misc(wil, "NAPI disable\n"); 1189 } 1190 wil_enable_irq(wil); 1191 1192 mutex_lock(&wil->p2p_wdev_mutex); 1193 wil_p2p_stop_radio_operations(wil); 1194 wil_abort_scan(wil, false); 1195 mutex_unlock(&wil->p2p_wdev_mutex); 1196 1197 wil_reset(wil, false); 1198 1199 return 0; 1200 } 1201 1202 int wil_down(struct wil6210_priv *wil) 1203 { 1204 int rc; 1205 1206 wil_dbg_misc(wil, "down\n"); 1207 1208 wil_set_recovery_state(wil, fw_recovery_idle); 1209 mutex_lock(&wil->mutex); 1210 rc = __wil_down(wil); 1211 mutex_unlock(&wil->mutex); 1212 1213 return rc; 1214 } 1215 1216 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 1217 { 1218 int i; 1219 int rc = -ENOENT; 1220 1221 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1222 if ((wil->sta[i].status != wil_sta_unused) && 1223 ether_addr_equal(wil->sta[i].addr, mac)) { 1224 rc = i; 1225 break; 1226 } 1227 } 1228 1229 return rc; 1230 } 1231 1232 void wil_halp_vote(struct wil6210_priv *wil) 1233 { 1234 unsigned long rc; 1235 unsigned long to_jiffies = msecs_to_jiffies(WAIT_FOR_HALP_VOTE_MS); 1236 1237 mutex_lock(&wil->halp.lock); 1238 1239 wil_dbg_irq(wil, "halp_vote: start, HALP ref_cnt (%d)\n", 1240 wil->halp.ref_cnt); 1241 1242 if (++wil->halp.ref_cnt == 1) { 1243 reinit_completion(&wil->halp.comp); 1244 wil6210_set_halp(wil); 1245 rc = wait_for_completion_timeout(&wil->halp.comp, to_jiffies); 1246 if (!rc) { 1247 wil_err(wil, "HALP vote timed out\n"); 1248 /* Mask HALP as done in case the interrupt is raised */ 1249 wil6210_mask_halp(wil); 1250 } else { 1251 wil_dbg_irq(wil, 1252 "halp_vote: HALP vote completed after %d ms\n", 1253 jiffies_to_msecs(to_jiffies - rc)); 1254 } 1255 } 1256 1257 wil_dbg_irq(wil, "halp_vote: end, HALP ref_cnt (%d)\n", 1258 wil->halp.ref_cnt); 1259 1260 mutex_unlock(&wil->halp.lock); 1261 } 1262 1263 void wil_halp_unvote(struct wil6210_priv *wil) 1264 { 1265 WARN_ON(wil->halp.ref_cnt == 0); 1266 1267 mutex_lock(&wil->halp.lock); 1268 1269 wil_dbg_irq(wil, "halp_unvote: start, HALP ref_cnt (%d)\n", 1270 wil->halp.ref_cnt); 1271 1272 if (--wil->halp.ref_cnt == 0) { 1273 wil6210_clear_halp(wil); 1274 wil_dbg_irq(wil, "HALP unvote\n"); 1275 } 1276 1277 wil_dbg_irq(wil, "halp_unvote:end, HALP ref_cnt (%d)\n", 1278 wil->halp.ref_cnt); 1279 1280 mutex_unlock(&wil->halp.lock); 1281 } 1282