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; 397 398 wil_dbg_misc(wil, "fw error worker\n"); 399 400 if (!netif_running(wil_to_ndev(wil))) { 401 wil_info(wil, "No recovery - interface is down\n"); 402 return; 403 } 404 405 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 406 * passed since last recovery attempt 407 */ 408 if (time_is_after_jiffies(wil->last_fw_recovery + 409 WIL6210_FW_RECOVERY_TO)) 410 wil->recovery_count++; 411 else 412 wil->recovery_count = 1; /* fw was alive for a long time */ 413 414 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 415 wil_err(wil, "too many recovery attempts (%d), giving up\n", 416 wil->recovery_count); 417 return; 418 } 419 420 wil->last_fw_recovery = jiffies; 421 422 wil_info(wil, "fw error recovery requested (try %d)...\n", 423 wil->recovery_count); 424 if (!no_fw_recovery) 425 wil->recovery_state = fw_recovery_running; 426 if (wil_wait_for_recovery(wil) != 0) 427 return; 428 429 mutex_lock(&wil->mutex); 430 switch (wdev->iftype) { 431 case NL80211_IFTYPE_STATION: 432 case NL80211_IFTYPE_P2P_CLIENT: 433 case NL80211_IFTYPE_MONITOR: 434 /* silent recovery, upper layers will see disconnect */ 435 __wil_down(wil); 436 __wil_up(wil); 437 break; 438 case NL80211_IFTYPE_AP: 439 case NL80211_IFTYPE_P2P_GO: 440 wil_info(wil, "No recovery for AP-like interface\n"); 441 /* recovery in these modes is done by upper layers */ 442 break; 443 default: 444 wil_err(wil, "No recovery - unknown interface type %d\n", 445 wdev->iftype); 446 break; 447 } 448 mutex_unlock(&wil->mutex); 449 } 450 451 static int wil_find_free_vring(struct wil6210_priv *wil) 452 { 453 int i; 454 455 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 456 if (!wil->vring_tx[i].va) 457 return i; 458 } 459 return -EINVAL; 460 } 461 462 int wil_tx_init(struct wil6210_priv *wil, int cid) 463 { 464 int rc = -EINVAL, ringid; 465 466 if (cid < 0) { 467 wil_err(wil, "No connection pending\n"); 468 goto out; 469 } 470 ringid = wil_find_free_vring(wil); 471 if (ringid < 0) { 472 wil_err(wil, "No free vring found\n"); 473 goto out; 474 } 475 476 wil_dbg_wmi(wil, "Configure for connection CID %d vring %d\n", 477 cid, ringid); 478 479 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); 480 if (rc) 481 wil_err(wil, "wil_vring_init_tx for CID %d vring %d failed\n", 482 cid, ringid); 483 484 out: 485 return rc; 486 } 487 488 int wil_bcast_init(struct wil6210_priv *wil) 489 { 490 int ri = wil->bcast_vring, rc; 491 492 if ((ri >= 0) && wil->vring_tx[ri].va) 493 return 0; 494 495 ri = wil_find_free_vring(wil); 496 if (ri < 0) 497 return ri; 498 499 wil->bcast_vring = ri; 500 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order); 501 if (rc) 502 wil->bcast_vring = -1; 503 504 return rc; 505 } 506 507 void wil_bcast_fini(struct wil6210_priv *wil) 508 { 509 int ri = wil->bcast_vring; 510 511 if (ri < 0) 512 return; 513 514 wil->bcast_vring = -1; 515 wil_vring_fini_tx(wil, ri); 516 } 517 518 int wil_priv_init(struct wil6210_priv *wil) 519 { 520 uint i; 521 522 wil_dbg_misc(wil, "priv_init\n"); 523 524 memset(wil->sta, 0, sizeof(wil->sta)); 525 for (i = 0; i < WIL6210_MAX_CID; i++) 526 spin_lock_init(&wil->sta[i].tid_rx_lock); 527 528 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) 529 spin_lock_init(&wil->vring_tx_data[i].lock); 530 531 mutex_init(&wil->mutex); 532 mutex_init(&wil->wmi_mutex); 533 mutex_init(&wil->probe_client_mutex); 534 mutex_init(&wil->p2p_wdev_mutex); 535 mutex_init(&wil->halp.lock); 536 537 init_completion(&wil->wmi_ready); 538 init_completion(&wil->wmi_call); 539 init_completion(&wil->halp.comp); 540 541 wil->bcast_vring = -1; 542 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 543 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 544 setup_timer(&wil->p2p.discovery_timer, wil_p2p_discovery_timer_fn, 545 (ulong)wil); 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 return 0; 580 581 out_wmi_wq: 582 destroy_workqueue(wil->wmi_wq); 583 584 return -EAGAIN; 585 } 586 587 void wil6210_bus_request(struct wil6210_priv *wil, u32 kbps) 588 { 589 if (wil->platform_ops.bus_request) 590 wil->platform_ops.bus_request(wil->platform_handle, kbps); 591 } 592 593 /** 594 * wil6210_disconnect - disconnect one connection 595 * @wil: driver context 596 * @bssid: peer to disconnect, NULL to disconnect all 597 * @reason_code: Reason code for the Disassociation frame 598 * @from_event: whether is invoked from FW event handler 599 * 600 * Disconnect and release associated resources. If invoked not from the 601 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 602 */ 603 void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 604 u16 reason_code, bool from_event) 605 { 606 wil_dbg_misc(wil, "disconnect\n"); 607 608 del_timer_sync(&wil->connect_timer); 609 _wil6210_disconnect(wil, bssid, reason_code, from_event); 610 } 611 612 void wil_priv_deinit(struct wil6210_priv *wil) 613 { 614 wil_dbg_misc(wil, "priv_deinit\n"); 615 616 wil_set_recovery_state(wil, fw_recovery_idle); 617 del_timer_sync(&wil->scan_timer); 618 del_timer_sync(&wil->p2p.discovery_timer); 619 cancel_work_sync(&wil->disconnect_worker); 620 cancel_work_sync(&wil->fw_error_worker); 621 cancel_work_sync(&wil->p2p.discovery_expired_work); 622 cancel_work_sync(&wil->p2p.delayed_listen_work); 623 mutex_lock(&wil->mutex); 624 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 625 mutex_unlock(&wil->mutex); 626 wmi_event_flush(wil); 627 wil_probe_client_flush(wil); 628 cancel_work_sync(&wil->probe_client_worker); 629 destroy_workqueue(wil->wq_service); 630 destroy_workqueue(wil->wmi_wq); 631 } 632 633 static inline void wil_halt_cpu(struct wil6210_priv *wil) 634 { 635 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 636 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 637 } 638 639 static inline void wil_release_cpu(struct wil6210_priv *wil) 640 { 641 /* Start CPU */ 642 wil_w(wil, RGF_USER_USER_CPU_0, 1); 643 } 644 645 static void wil_set_oob_mode(struct wil6210_priv *wil, u8 mode) 646 { 647 wil_info(wil, "oob_mode to %d\n", mode); 648 switch (mode) { 649 case 0: 650 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE | 651 BIT_USER_OOB_R2_MODE); 652 break; 653 case 1: 654 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 655 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 656 break; 657 case 2: 658 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 659 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 660 break; 661 default: 662 wil_err(wil, "invalid oob_mode: %d\n", mode); 663 } 664 } 665 666 static int wil_target_reset(struct wil6210_priv *wil) 667 { 668 int delay = 0; 669 u32 x, x1 = 0; 670 671 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 672 673 /* Clear MAC link up */ 674 wil_s(wil, RGF_HP_CTRL, BIT(15)); 675 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 676 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 677 678 wil_halt_cpu(wil); 679 680 /* clear all boot loader "ready" bits */ 681 wil_w(wil, RGF_USER_BL + 682 offsetof(struct bl_dedicated_registers_v0, boot_loader_ready), 0); 683 /* Clear Fw Download notification */ 684 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 685 686 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 687 /* XTAL stabilization should take about 3ms */ 688 usleep_range(5000, 7000); 689 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 690 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 691 wil_err(wil, "Xtal stabilization timeout\n" 692 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 693 return -ETIME; 694 } 695 /* switch 10k to XTAL*/ 696 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 697 /* 40 MHz */ 698 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 699 700 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 701 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 702 703 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 704 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 705 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 706 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 707 708 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 709 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 710 711 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 712 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 713 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 714 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 715 716 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 717 /* reset A2 PCIE AHB */ 718 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 719 720 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 721 722 /* wait until device ready. typical time is 20..80 msec */ 723 do { 724 msleep(RST_DELAY); 725 x = wil_r(wil, RGF_USER_BL + 726 offsetof(struct bl_dedicated_registers_v0, 727 boot_loader_ready)); 728 if (x1 != x) { 729 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x); 730 x1 = x; 731 } 732 if (delay++ > RST_COUNT) { 733 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 734 x); 735 return -ETIME; 736 } 737 } while (x != BL_READY); 738 739 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 740 741 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 742 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 743 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 744 745 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 746 return 0; 747 } 748 749 static void wil_collect_fw_info(struct wil6210_priv *wil) 750 { 751 struct wiphy *wiphy = wil_to_wiphy(wil); 752 u8 retry_short; 753 int rc; 754 755 rc = wmi_get_mgmt_retry(wil, &retry_short); 756 if (!rc) { 757 wiphy->retry_short = retry_short; 758 wil_dbg_misc(wil, "FW retry_short: %d\n", retry_short); 759 } 760 } 761 762 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 763 { 764 le32_to_cpus(&r->base); 765 le16_to_cpus(&r->entry_size); 766 le16_to_cpus(&r->size); 767 le32_to_cpus(&r->tail); 768 le32_to_cpus(&r->head); 769 } 770 771 static int wil_get_bl_info(struct wil6210_priv *wil) 772 { 773 struct net_device *ndev = wil_to_ndev(wil); 774 struct wiphy *wiphy = wil_to_wiphy(wil); 775 union { 776 struct bl_dedicated_registers_v0 bl0; 777 struct bl_dedicated_registers_v1 bl1; 778 } bl; 779 u32 bl_ver; 780 u8 *mac; 781 u16 rf_status; 782 783 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 784 sizeof(bl)); 785 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 786 mac = bl.bl0.mac_address; 787 788 if (bl_ver == 0) { 789 le32_to_cpus(&bl.bl0.rf_type); 790 le32_to_cpus(&bl.bl0.baseband_type); 791 rf_status = 0; /* actually, unknown */ 792 wil_info(wil, 793 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 794 bl_ver, mac, 795 bl.bl0.rf_type, bl.bl0.baseband_type); 796 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 797 } else { 798 le16_to_cpus(&bl.bl1.rf_type); 799 rf_status = le16_to_cpu(bl.bl1.rf_status); 800 le32_to_cpus(&bl.bl1.baseband_type); 801 le16_to_cpus(&bl.bl1.bl_version_subminor); 802 le16_to_cpus(&bl.bl1.bl_version_build); 803 wil_info(wil, 804 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 805 bl_ver, mac, 806 bl.bl1.rf_type, rf_status, 807 bl.bl1.baseband_type); 808 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 809 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 810 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 811 } 812 813 if (!is_valid_ether_addr(mac)) { 814 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 815 return -EINVAL; 816 } 817 818 ether_addr_copy(ndev->perm_addr, mac); 819 ether_addr_copy(wiphy->perm_addr, mac); 820 if (!is_valid_ether_addr(ndev->dev_addr)) 821 ether_addr_copy(ndev->dev_addr, mac); 822 823 if (rf_status) {/* bad RF cable? */ 824 wil_err(wil, "RF communication error 0x%04x", 825 rf_status); 826 return -EAGAIN; 827 } 828 829 return 0; 830 } 831 832 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 833 { 834 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 835 u32 bl_ver = wil_r(wil, RGF_USER_BL + 836 offsetof(struct bl_dedicated_registers_v0, 837 boot_loader_struct_version)); 838 839 if (bl_ver < 2) 840 return; 841 842 bl_assert_code = wil_r(wil, RGF_USER_BL + 843 offsetof(struct bl_dedicated_registers_v1, 844 bl_assert_code)); 845 bl_assert_blink = wil_r(wil, RGF_USER_BL + 846 offsetof(struct bl_dedicated_registers_v1, 847 bl_assert_blink)); 848 bl_magic_number = wil_r(wil, RGF_USER_BL + 849 offsetof(struct bl_dedicated_registers_v1, 850 bl_magic_number)); 851 852 if (is_err) { 853 wil_err(wil, 854 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 855 bl_assert_code, bl_assert_blink, bl_magic_number); 856 } else { 857 wil_dbg_misc(wil, 858 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 859 bl_assert_code, bl_assert_blink, bl_magic_number); 860 } 861 } 862 863 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 864 { 865 ulong to = msecs_to_jiffies(1000); 866 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 867 868 if (0 == left) { 869 wil_err(wil, "Firmware not ready\n"); 870 return -ETIME; 871 } else { 872 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 873 jiffies_to_msecs(to-left), wil->hw_version); 874 } 875 return 0; 876 } 877 878 void wil_abort_scan(struct wil6210_priv *wil, bool sync) 879 { 880 int rc; 881 struct cfg80211_scan_info info = { 882 .aborted = true, 883 }; 884 885 lockdep_assert_held(&wil->p2p_wdev_mutex); 886 887 if (!wil->scan_request) 888 return; 889 890 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", wil->scan_request); 891 del_timer_sync(&wil->scan_timer); 892 mutex_unlock(&wil->p2p_wdev_mutex); 893 rc = wmi_abort_scan(wil); 894 if (!rc && sync) 895 wait_event_interruptible_timeout(wil->wq, !wil->scan_request, 896 msecs_to_jiffies( 897 WAIT_FOR_SCAN_ABORT_MS)); 898 899 mutex_lock(&wil->p2p_wdev_mutex); 900 if (wil->scan_request) { 901 cfg80211_scan_done(wil->scan_request, &info); 902 wil->scan_request = NULL; 903 } 904 } 905 906 int wil_ps_update(struct wil6210_priv *wil, enum wmi_ps_profile_type ps_profile) 907 { 908 int rc; 909 910 if (!test_bit(WMI_FW_CAPABILITY_PS_CONFIG, wil->fw_capabilities)) { 911 wil_err(wil, "set_power_mgmt not supported\n"); 912 return -EOPNOTSUPP; 913 } 914 915 rc = wmi_ps_dev_profile_cfg(wil, ps_profile); 916 if (rc) 917 wil_err(wil, "wmi_ps_dev_profile_cfg failed (%d)\n", rc); 918 else 919 wil->ps_profile = ps_profile; 920 921 return rc; 922 } 923 924 /* 925 * We reset all the structures, and we reset the UMAC. 926 * After calling this routine, you're expected to reload 927 * the firmware. 928 */ 929 int wil_reset(struct wil6210_priv *wil, bool load_fw) 930 { 931 int rc; 932 933 wil_dbg_misc(wil, "reset\n"); 934 935 WARN_ON(!mutex_is_locked(&wil->mutex)); 936 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 937 938 if (debug_fw) { 939 static const u8 mac[ETH_ALEN] = { 940 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 941 }; 942 struct net_device *ndev = wil_to_ndev(wil); 943 944 ether_addr_copy(ndev->perm_addr, mac); 945 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 946 return 0; 947 } 948 949 if (wil->hw_version == HW_VER_UNKNOWN) 950 return -ENODEV; 951 952 if (wil->platform_ops.notify) { 953 rc = wil->platform_ops.notify(wil->platform_handle, 954 WIL_PLATFORM_EVT_PRE_RESET); 955 if (rc) 956 wil_err(wil, "PRE_RESET platform notify failed, rc %d\n", 957 rc); 958 } 959 960 set_bit(wil_status_resetting, wil->status); 961 962 cancel_work_sync(&wil->disconnect_worker); 963 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 964 wil_bcast_fini(wil); 965 966 /* Disable device led before reset*/ 967 wmi_led_cfg(wil, false); 968 969 mutex_lock(&wil->p2p_wdev_mutex); 970 wil_abort_scan(wil, false); 971 mutex_unlock(&wil->p2p_wdev_mutex); 972 973 /* prevent NAPI from being scheduled and prevent wmi commands */ 974 mutex_lock(&wil->wmi_mutex); 975 bitmap_zero(wil->status, wil_status_last); 976 mutex_unlock(&wil->wmi_mutex); 977 978 wil_mask_irq(wil); 979 980 wmi_event_flush(wil); 981 982 flush_workqueue(wil->wq_service); 983 flush_workqueue(wil->wmi_wq); 984 985 wil_bl_crash_info(wil, false); 986 wil_disable_irq(wil); 987 rc = wil_target_reset(wil); 988 wil6210_clear_irq(wil); 989 wil_enable_irq(wil); 990 wil_rx_fini(wil); 991 if (rc) { 992 wil_bl_crash_info(wil, true); 993 return rc; 994 } 995 996 rc = wil_get_bl_info(wil); 997 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */ 998 rc = 0; 999 if (rc) 1000 return rc; 1001 1002 wil_set_oob_mode(wil, oob_mode); 1003 if (load_fw) { 1004 wil_info(wil, "Use firmware <%s> + board <%s>\n", 1005 wil->wil_fw_name, WIL_BOARD_FILE_NAME); 1006 1007 wil_halt_cpu(wil); 1008 memset(wil->fw_version, 0, sizeof(wil->fw_version)); 1009 /* Loading f/w from the file */ 1010 rc = wil_request_firmware(wil, wil->wil_fw_name, true); 1011 if (rc) 1012 return rc; 1013 rc = wil_request_firmware(wil, WIL_BOARD_FILE_NAME, true); 1014 if (rc) 1015 return rc; 1016 1017 /* Mark FW as loaded from host */ 1018 wil_s(wil, RGF_USER_USAGE_6, 1); 1019 1020 /* clear any interrupts which on-card-firmware 1021 * may have set 1022 */ 1023 wil6210_clear_irq(wil); 1024 /* CAF_ICR - clear and mask */ 1025 /* it is W1C, clear by writing back same value */ 1026 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 1027 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 1028 1029 wil_release_cpu(wil); 1030 } 1031 1032 /* init after reset */ 1033 wil->ap_isolate = 0; 1034 reinit_completion(&wil->wmi_ready); 1035 reinit_completion(&wil->wmi_call); 1036 reinit_completion(&wil->halp.comp); 1037 1038 if (load_fw) { 1039 wil_configure_interrupt_moderation(wil); 1040 wil_unmask_irq(wil); 1041 1042 /* we just started MAC, wait for FW ready */ 1043 rc = wil_wait_for_fw_ready(wil); 1044 if (rc) 1045 return rc; 1046 1047 /* check FW is responsive */ 1048 rc = wmi_echo(wil); 1049 if (rc) { 1050 wil_err(wil, "wmi_echo failed, rc %d\n", rc); 1051 return rc; 1052 } 1053 1054 if (wil->ps_profile != WMI_PS_PROFILE_TYPE_DEFAULT) 1055 wil_ps_update(wil, wil->ps_profile); 1056 1057 wil_collect_fw_info(wil); 1058 1059 if (wil->platform_ops.notify) { 1060 rc = wil->platform_ops.notify(wil->platform_handle, 1061 WIL_PLATFORM_EVT_FW_RDY); 1062 if (rc) { 1063 wil_err(wil, "FW_RDY notify failed, rc %d\n", 1064 rc); 1065 rc = 0; 1066 } 1067 } 1068 } 1069 1070 return rc; 1071 } 1072 1073 void wil_fw_error_recovery(struct wil6210_priv *wil) 1074 { 1075 wil_dbg_misc(wil, "starting fw error recovery\n"); 1076 1077 if (test_bit(wil_status_resetting, wil->status)) { 1078 wil_info(wil, "Reset already in progress\n"); 1079 return; 1080 } 1081 1082 wil->recovery_state = fw_recovery_pending; 1083 schedule_work(&wil->fw_error_worker); 1084 } 1085 1086 int __wil_up(struct wil6210_priv *wil) 1087 { 1088 struct net_device *ndev = wil_to_ndev(wil); 1089 struct wireless_dev *wdev = wil->wdev; 1090 int rc; 1091 1092 WARN_ON(!mutex_is_locked(&wil->mutex)); 1093 1094 rc = wil_reset(wil, true); 1095 if (rc) 1096 return rc; 1097 1098 /* Rx VRING. After MAC and beacon */ 1099 rc = wil_rx_init(wil, 1 << rx_ring_order); 1100 if (rc) 1101 return rc; 1102 1103 switch (wdev->iftype) { 1104 case NL80211_IFTYPE_STATION: 1105 wil_dbg_misc(wil, "type: STATION\n"); 1106 ndev->type = ARPHRD_ETHER; 1107 break; 1108 case NL80211_IFTYPE_AP: 1109 wil_dbg_misc(wil, "type: AP\n"); 1110 ndev->type = ARPHRD_ETHER; 1111 break; 1112 case NL80211_IFTYPE_P2P_CLIENT: 1113 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 1114 ndev->type = ARPHRD_ETHER; 1115 break; 1116 case NL80211_IFTYPE_P2P_GO: 1117 wil_dbg_misc(wil, "type: P2P_GO\n"); 1118 ndev->type = ARPHRD_ETHER; 1119 break; 1120 case NL80211_IFTYPE_MONITOR: 1121 wil_dbg_misc(wil, "type: Monitor\n"); 1122 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 1123 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 1124 break; 1125 default: 1126 return -EOPNOTSUPP; 1127 } 1128 1129 /* MAC address - pre-requisite for other commands */ 1130 wmi_set_mac_address(wil, ndev->dev_addr); 1131 1132 wil_dbg_misc(wil, "NAPI enable\n"); 1133 napi_enable(&wil->napi_rx); 1134 napi_enable(&wil->napi_tx); 1135 set_bit(wil_status_napi_en, wil->status); 1136 1137 wil6210_bus_request(wil, WIL_DEFAULT_BUS_REQUEST_KBPS); 1138 1139 return 0; 1140 } 1141 1142 int wil_up(struct wil6210_priv *wil) 1143 { 1144 int rc; 1145 1146 wil_dbg_misc(wil, "up\n"); 1147 1148 mutex_lock(&wil->mutex); 1149 rc = __wil_up(wil); 1150 mutex_unlock(&wil->mutex); 1151 1152 return rc; 1153 } 1154 1155 int __wil_down(struct wil6210_priv *wil) 1156 { 1157 WARN_ON(!mutex_is_locked(&wil->mutex)); 1158 1159 set_bit(wil_status_resetting, wil->status); 1160 1161 wil6210_bus_request(wil, 0); 1162 1163 wil_disable_irq(wil); 1164 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 1165 napi_disable(&wil->napi_rx); 1166 napi_disable(&wil->napi_tx); 1167 wil_dbg_misc(wil, "NAPI disable\n"); 1168 } 1169 wil_enable_irq(wil); 1170 1171 mutex_lock(&wil->p2p_wdev_mutex); 1172 wil_p2p_stop_radio_operations(wil); 1173 wil_abort_scan(wil, false); 1174 mutex_unlock(&wil->p2p_wdev_mutex); 1175 1176 wil_reset(wil, false); 1177 1178 return 0; 1179 } 1180 1181 int wil_down(struct wil6210_priv *wil) 1182 { 1183 int rc; 1184 1185 wil_dbg_misc(wil, "down\n"); 1186 1187 wil_set_recovery_state(wil, fw_recovery_idle); 1188 mutex_lock(&wil->mutex); 1189 rc = __wil_down(wil); 1190 mutex_unlock(&wil->mutex); 1191 1192 return rc; 1193 } 1194 1195 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 1196 { 1197 int i; 1198 int rc = -ENOENT; 1199 1200 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1201 if ((wil->sta[i].status != wil_sta_unused) && 1202 ether_addr_equal(wil->sta[i].addr, mac)) { 1203 rc = i; 1204 break; 1205 } 1206 } 1207 1208 return rc; 1209 } 1210 1211 void wil_halp_vote(struct wil6210_priv *wil) 1212 { 1213 unsigned long rc; 1214 unsigned long to_jiffies = msecs_to_jiffies(WAIT_FOR_HALP_VOTE_MS); 1215 1216 mutex_lock(&wil->halp.lock); 1217 1218 wil_dbg_irq(wil, "halp_vote: start, HALP ref_cnt (%d)\n", 1219 wil->halp.ref_cnt); 1220 1221 if (++wil->halp.ref_cnt == 1) { 1222 reinit_completion(&wil->halp.comp); 1223 wil6210_set_halp(wil); 1224 rc = wait_for_completion_timeout(&wil->halp.comp, to_jiffies); 1225 if (!rc) { 1226 wil_err(wil, "HALP vote timed out\n"); 1227 /* Mask HALP as done in case the interrupt is raised */ 1228 wil6210_mask_halp(wil); 1229 } else { 1230 wil_dbg_irq(wil, 1231 "halp_vote: HALP vote completed after %d ms\n", 1232 jiffies_to_msecs(to_jiffies - rc)); 1233 } 1234 } 1235 1236 wil_dbg_irq(wil, "halp_vote: end, HALP ref_cnt (%d)\n", 1237 wil->halp.ref_cnt); 1238 1239 mutex_unlock(&wil->halp.lock); 1240 } 1241 1242 void wil_halp_unvote(struct wil6210_priv *wil) 1243 { 1244 WARN_ON(wil->halp.ref_cnt == 0); 1245 1246 mutex_lock(&wil->halp.lock); 1247 1248 wil_dbg_irq(wil, "halp_unvote: start, HALP ref_cnt (%d)\n", 1249 wil->halp.ref_cnt); 1250 1251 if (--wil->halp.ref_cnt == 0) { 1252 wil6210_clear_halp(wil); 1253 wil_dbg_irq(wil, "HALP unvote\n"); 1254 } 1255 1256 wil_dbg_irq(wil, "halp_unvote:end, HALP ref_cnt (%d)\n", 1257 wil->halp.ref_cnt); 1258 1259 mutex_unlock(&wil->halp.lock); 1260 } 1261