1 /* 2 * Copyright (c) 2012-2017 Qualcomm Atheros, Inc. 3 * Copyright (c) 2018, The Linux Foundation. All rights reserved. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <linux/moduleparam.h> 19 #include <linux/if_arp.h> 20 #include <linux/etherdevice.h> 21 22 #include "wil6210.h" 23 #include "txrx.h" 24 #include "wmi.h" 25 #include "boot_loader.h" 26 27 #define WAIT_FOR_HALP_VOTE_MS 100 28 #define WAIT_FOR_SCAN_ABORT_MS 1000 29 30 bool debug_fw; /* = false; */ 31 module_param(debug_fw, bool, 0444); 32 MODULE_PARM_DESC(debug_fw, " do not perform card reset. For FW debug"); 33 34 static u8 oob_mode; 35 module_param(oob_mode, byte, 0444); 36 MODULE_PARM_DESC(oob_mode, 37 " enable out of the box (OOB) mode in FW, for diagnostics and certification"); 38 39 bool no_fw_recovery; 40 module_param(no_fw_recovery, bool, 0644); 41 MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery"); 42 43 /* if not set via modparam, will be set to default value of 1/8 of 44 * rx ring size during init flow 45 */ 46 unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT; 47 module_param(rx_ring_overflow_thrsh, ushort, 0444); 48 MODULE_PARM_DESC(rx_ring_overflow_thrsh, 49 " RX ring overflow threshold in descriptors."); 50 51 /* We allow allocation of more than 1 page buffers to support large packets. 52 * It is suboptimal behavior performance wise in case MTU above page size. 53 */ 54 unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 55 static int mtu_max_set(const char *val, const struct kernel_param *kp) 56 { 57 int ret; 58 59 /* sets mtu_max directly. no need to restore it in case of 60 * illegal value since we assume this will fail insmod 61 */ 62 ret = param_set_uint(val, kp); 63 if (ret) 64 return ret; 65 66 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU) 67 ret = -EINVAL; 68 69 return ret; 70 } 71 72 static const struct kernel_param_ops mtu_max_ops = { 73 .set = mtu_max_set, 74 .get = param_get_uint, 75 }; 76 77 module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, 0444); 78 MODULE_PARM_DESC(mtu_max, " Max MTU value."); 79 80 static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT; 81 static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT; 82 static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT; 83 84 static int ring_order_set(const char *val, const struct kernel_param *kp) 85 { 86 int ret; 87 uint x; 88 89 ret = kstrtouint(val, 0, &x); 90 if (ret) 91 return ret; 92 93 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX)) 94 return -EINVAL; 95 96 *((uint *)kp->arg) = x; 97 98 return 0; 99 } 100 101 static const struct kernel_param_ops ring_order_ops = { 102 .set = ring_order_set, 103 .get = param_get_uint, 104 }; 105 106 module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, 0444); 107 MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order"); 108 module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, 0444); 109 MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order"); 110 module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, 0444); 111 MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order"); 112 113 #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 114 #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 115 116 /* 117 * Due to a hardware issue, 118 * one has to read/write to/from NIC in 32-bit chunks; 119 * regular memcpy_fromio and siblings will 120 * not work on 64-bit platform - it uses 64-bit transactions 121 * 122 * Force 32-bit transactions to enable NIC on 64-bit platforms 123 * 124 * To avoid byte swap on big endian host, __raw_{read|write}l 125 * should be used - {read|write}l would swap bytes to provide 126 * little endian on PCI value in host endianness. 127 */ 128 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 129 size_t count) 130 { 131 u32 *d = dst; 132 const volatile u32 __iomem *s = src; 133 134 for (; count >= 4; count -= 4) 135 *d++ = __raw_readl(s++); 136 137 if (unlikely(count)) { 138 /* count can be 1..3 */ 139 u32 tmp = __raw_readl(s); 140 141 memcpy(d, &tmp, count); 142 } 143 } 144 145 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, 146 size_t count) 147 { 148 volatile u32 __iomem *d = dst; 149 const u32 *s = src; 150 151 for (; count >= 4; count -= 4) 152 __raw_writel(*s++, d++); 153 154 if (unlikely(count)) { 155 /* count can be 1..3 */ 156 u32 tmp = 0; 157 158 memcpy(&tmp, s, count); 159 __raw_writel(tmp, d); 160 } 161 } 162 163 static void wil_disconnect_cid(struct wil6210_vif *vif, int cid, 164 u16 reason_code, bool from_event) 165 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) 166 { 167 uint i; 168 struct wil6210_priv *wil = vif_to_wil(vif); 169 struct net_device *ndev = vif_to_ndev(vif); 170 struct wireless_dev *wdev = vif_to_wdev(vif); 171 struct wil_sta_info *sta = &wil->sta[cid]; 172 173 might_sleep(); 174 wil_dbg_misc(wil, "disconnect_cid: CID %d, MID %d, status %d\n", 175 cid, sta->mid, sta->status); 176 /* inform upper/lower layers */ 177 if (sta->status != wil_sta_unused) { 178 if (vif->mid != sta->mid) { 179 wil_err(wil, "STA MID mismatch with VIF MID(%d)\n", 180 vif->mid); 181 /* let FW override sta->mid but be more strict with 182 * user space requests 183 */ 184 if (!from_event) 185 return; 186 } 187 if (!from_event) { 188 bool del_sta = (wdev->iftype == NL80211_IFTYPE_AP) ? 189 disable_ap_sme : false; 190 wmi_disconnect_sta(vif, sta->addr, reason_code, 191 true, del_sta); 192 } 193 194 switch (wdev->iftype) { 195 case NL80211_IFTYPE_AP: 196 case NL80211_IFTYPE_P2P_GO: 197 /* AP-like interface */ 198 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 199 break; 200 default: 201 break; 202 } 203 sta->status = wil_sta_unused; 204 sta->mid = U8_MAX; 205 } 206 /* reorder buffers */ 207 for (i = 0; i < WIL_STA_TID_NUM; i++) { 208 struct wil_tid_ampdu_rx *r; 209 210 spin_lock_bh(&sta->tid_rx_lock); 211 212 r = sta->tid_rx[i]; 213 sta->tid_rx[i] = NULL; 214 wil_tid_ampdu_rx_free(wil, r); 215 216 spin_unlock_bh(&sta->tid_rx_lock); 217 } 218 /* crypto context */ 219 memset(sta->tid_crypto_rx, 0, sizeof(sta->tid_crypto_rx)); 220 memset(&sta->group_crypto_rx, 0, sizeof(sta->group_crypto_rx)); 221 /* release vrings */ 222 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 223 if (wil->vring2cid_tid[i][0] == cid) 224 wil_vring_fini_tx(wil, i); 225 } 226 /* statistics */ 227 memset(&sta->stats, 0, sizeof(sta->stats)); 228 } 229 230 static bool wil_vif_is_connected(struct wil6210_priv *wil, u8 mid) 231 { 232 int i; 233 234 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 235 if (wil->sta[i].mid == mid && 236 wil->sta[i].status == wil_sta_connected) 237 return true; 238 } 239 240 return false; 241 } 242 243 static void _wil6210_disconnect(struct wil6210_vif *vif, const u8 *bssid, 244 u16 reason_code, bool from_event) 245 { 246 struct wil6210_priv *wil = vif_to_wil(vif); 247 int cid = -ENOENT; 248 struct net_device *ndev; 249 struct wireless_dev *wdev; 250 251 if (unlikely(!vif)) 252 return; 253 254 ndev = vif_to_ndev(vif); 255 wdev = vif_to_wdev(vif); 256 257 might_sleep(); 258 wil_info(wil, "bssid=%pM, reason=%d, ev%s\n", bssid, 259 reason_code, from_event ? "+" : "-"); 260 261 /* Cases are: 262 * - disconnect single STA, still connected 263 * - disconnect single STA, already disconnected 264 * - disconnect all 265 * 266 * For "disconnect all", there are 3 options: 267 * - bssid == NULL 268 * - bssid is broadcast address (ff:ff:ff:ff:ff:ff) 269 * - bssid is our MAC address 270 */ 271 if (bssid && !is_broadcast_ether_addr(bssid) && 272 !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) { 273 cid = wil_find_cid(wil, vif->mid, bssid); 274 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 275 bssid, cid, reason_code); 276 if (cid >= 0) /* disconnect 1 peer */ 277 wil_disconnect_cid(vif, cid, reason_code, from_event); 278 } else { /* all */ 279 wil_dbg_misc(wil, "Disconnect all\n"); 280 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 281 wil_disconnect_cid(vif, cid, reason_code, from_event); 282 } 283 284 /* link state */ 285 switch (wdev->iftype) { 286 case NL80211_IFTYPE_STATION: 287 case NL80211_IFTYPE_P2P_CLIENT: 288 wil_bcast_fini(vif); 289 wil_update_net_queues_bh(wil, vif, NULL, true); 290 netif_carrier_off(ndev); 291 if (!wil_has_other_active_ifaces(wil, ndev, false, true)) 292 wil6210_bus_request(wil, WIL_DEFAULT_BUS_REQUEST_KBPS); 293 294 if (test_and_clear_bit(wil_vif_fwconnected, vif->status)) { 295 atomic_dec(&wil->connected_vifs); 296 cfg80211_disconnected(ndev, reason_code, 297 NULL, 0, 298 vif->locally_generated_disc, 299 GFP_KERNEL); 300 vif->locally_generated_disc = false; 301 } else if (test_bit(wil_vif_fwconnecting, vif->status)) { 302 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 303 WLAN_STATUS_UNSPECIFIED_FAILURE, 304 GFP_KERNEL); 305 vif->bss = NULL; 306 } 307 clear_bit(wil_vif_fwconnecting, vif->status); 308 break; 309 case NL80211_IFTYPE_AP: 310 case NL80211_IFTYPE_P2P_GO: 311 if (!wil_vif_is_connected(wil, vif->mid)) { 312 wil_update_net_queues_bh(wil, vif, NULL, true); 313 if (test_and_clear_bit(wil_vif_fwconnected, 314 vif->status)) 315 atomic_dec(&wil->connected_vifs); 316 } else { 317 wil_update_net_queues_bh(wil, vif, NULL, false); 318 } 319 break; 320 default: 321 break; 322 } 323 } 324 325 void wil_disconnect_worker(struct work_struct *work) 326 { 327 struct wil6210_vif *vif = container_of(work, 328 struct wil6210_vif, disconnect_worker); 329 struct wil6210_priv *wil = vif_to_wil(vif); 330 struct net_device *ndev = vif_to_ndev(vif); 331 int rc; 332 struct { 333 struct wmi_cmd_hdr wmi; 334 struct wmi_disconnect_event evt; 335 } __packed reply; 336 337 if (test_bit(wil_vif_fwconnected, vif->status)) 338 /* connect succeeded after all */ 339 return; 340 341 if (!test_bit(wil_vif_fwconnecting, vif->status)) 342 /* already disconnected */ 343 return; 344 345 rc = wmi_call(wil, WMI_DISCONNECT_CMDID, vif->mid, NULL, 0, 346 WMI_DISCONNECT_EVENTID, &reply, sizeof(reply), 347 WIL6210_DISCONNECT_TO_MS); 348 if (rc) { 349 wil_err(wil, "disconnect error %d\n", rc); 350 return; 351 } 352 353 wil_update_net_queues_bh(wil, vif, NULL, true); 354 netif_carrier_off(ndev); 355 cfg80211_connect_result(ndev, NULL, NULL, 0, NULL, 0, 356 WLAN_STATUS_UNSPECIFIED_FAILURE, GFP_KERNEL); 357 clear_bit(wil_vif_fwconnecting, vif->status); 358 } 359 360 static int wil_wait_for_recovery(struct wil6210_priv *wil) 361 { 362 if (wait_event_interruptible(wil->wq, wil->recovery_state != 363 fw_recovery_pending)) { 364 wil_err(wil, "Interrupt, canceling recovery\n"); 365 return -ERESTARTSYS; 366 } 367 if (wil->recovery_state != fw_recovery_running) { 368 wil_info(wil, "Recovery cancelled\n"); 369 return -EINTR; 370 } 371 wil_info(wil, "Proceed with recovery\n"); 372 return 0; 373 } 374 375 void wil_set_recovery_state(struct wil6210_priv *wil, int state) 376 { 377 wil_dbg_misc(wil, "set_recovery_state: %d -> %d\n", 378 wil->recovery_state, state); 379 380 wil->recovery_state = state; 381 wake_up_interruptible(&wil->wq); 382 } 383 384 bool wil_is_recovery_blocked(struct wil6210_priv *wil) 385 { 386 return no_fw_recovery && (wil->recovery_state == fw_recovery_pending); 387 } 388 389 static void wil_fw_error_worker(struct work_struct *work) 390 { 391 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 392 fw_error_worker); 393 struct net_device *ndev = wil->main_ndev; 394 struct wireless_dev *wdev = ndev->ieee80211_ptr; 395 396 wil_dbg_misc(wil, "fw error worker\n"); 397 398 if (!ndev || !(ndev->flags & IFF_UP)) { 399 wil_info(wil, "No recovery - interface is down\n"); 400 return; 401 } 402 403 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 404 * passed since last recovery attempt 405 */ 406 if (time_is_after_jiffies(wil->last_fw_recovery + 407 WIL6210_FW_RECOVERY_TO)) 408 wil->recovery_count++; 409 else 410 wil->recovery_count = 1; /* fw was alive for a long time */ 411 412 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 413 wil_err(wil, "too many recovery attempts (%d), giving up\n", 414 wil->recovery_count); 415 return; 416 } 417 418 wil->last_fw_recovery = jiffies; 419 420 wil_info(wil, "fw error recovery requested (try %d)...\n", 421 wil->recovery_count); 422 if (!no_fw_recovery) 423 wil->recovery_state = fw_recovery_running; 424 if (wil_wait_for_recovery(wil) != 0) 425 return; 426 427 mutex_lock(&wil->mutex); 428 /* Needs adaptation for multiple VIFs 429 * need to go over all VIFs and consider the appropriate 430 * recovery. 431 */ 432 switch (wdev->iftype) { 433 case NL80211_IFTYPE_STATION: 434 case NL80211_IFTYPE_P2P_CLIENT: 435 case NL80211_IFTYPE_MONITOR: 436 /* silent recovery, upper layers will see disconnect */ 437 __wil_down(wil); 438 __wil_up(wil); 439 break; 440 case NL80211_IFTYPE_AP: 441 case NL80211_IFTYPE_P2P_GO: 442 wil_info(wil, "No recovery for AP-like interface\n"); 443 /* recovery in these modes is done by upper layers */ 444 break; 445 default: 446 wil_err(wil, "No recovery - unknown interface type %d\n", 447 wdev->iftype); 448 break; 449 } 450 mutex_unlock(&wil->mutex); 451 } 452 453 static int wil_find_free_vring(struct wil6210_priv *wil) 454 { 455 int i; 456 457 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 458 if (!wil->vring_tx[i].va) 459 return i; 460 } 461 return -EINVAL; 462 } 463 464 int wil_tx_init(struct wil6210_vif *vif, int cid) 465 { 466 struct wil6210_priv *wil = vif_to_wil(vif); 467 int rc = -EINVAL, ringid; 468 469 if (cid < 0) { 470 wil_err(wil, "No connection pending\n"); 471 goto out; 472 } 473 ringid = wil_find_free_vring(wil); 474 if (ringid < 0) { 475 wil_err(wil, "No free vring found\n"); 476 goto out; 477 } 478 479 wil_dbg_wmi(wil, "Configure for connection CID %d MID %d vring %d\n", 480 cid, vif->mid, ringid); 481 482 rc = wil_vring_init_tx(vif, ringid, 1 << tx_ring_order, cid, 0); 483 if (rc) 484 wil_err(wil, "init TX for CID %d MID %d vring %d failed\n", 485 cid, vif->mid, ringid); 486 487 out: 488 return rc; 489 } 490 491 int wil_bcast_init(struct wil6210_vif *vif) 492 { 493 struct wil6210_priv *wil = vif_to_wil(vif); 494 int ri = vif->bcast_vring, rc; 495 496 if ((ri >= 0) && wil->vring_tx[ri].va) 497 return 0; 498 499 ri = wil_find_free_vring(wil); 500 if (ri < 0) 501 return ri; 502 503 vif->bcast_vring = ri; 504 rc = wil_vring_init_bcast(vif, ri, 1 << bcast_ring_order); 505 if (rc) 506 vif->bcast_vring = -1; 507 508 return rc; 509 } 510 511 void wil_bcast_fini(struct wil6210_vif *vif) 512 { 513 struct wil6210_priv *wil = vif_to_wil(vif); 514 int ri = vif->bcast_vring; 515 516 if (ri < 0) 517 return; 518 519 vif->bcast_vring = -1; 520 wil_vring_fini_tx(wil, ri); 521 } 522 523 void wil_bcast_fini_all(struct wil6210_priv *wil) 524 { 525 int i; 526 struct wil6210_vif *vif; 527 528 for (i = 0; i < wil->max_vifs; i++) { 529 vif = wil->vifs[i]; 530 if (vif) 531 wil_bcast_fini(vif); 532 } 533 } 534 535 int wil_priv_init(struct wil6210_priv *wil) 536 { 537 uint i; 538 539 wil_dbg_misc(wil, "priv_init\n"); 540 541 memset(wil->sta, 0, sizeof(wil->sta)); 542 for (i = 0; i < WIL6210_MAX_CID; i++) { 543 spin_lock_init(&wil->sta[i].tid_rx_lock); 544 wil->sta[i].mid = U8_MAX; 545 } 546 547 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) 548 spin_lock_init(&wil->vring_tx_data[i].lock); 549 550 mutex_init(&wil->mutex); 551 mutex_init(&wil->vif_mutex); 552 mutex_init(&wil->wmi_mutex); 553 mutex_init(&wil->halp.lock); 554 555 init_completion(&wil->wmi_ready); 556 init_completion(&wil->wmi_call); 557 init_completion(&wil->halp.comp); 558 559 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 560 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 561 562 INIT_LIST_HEAD(&wil->pending_wmi_ev); 563 spin_lock_init(&wil->wmi_ev_lock); 564 spin_lock_init(&wil->net_queue_lock); 565 init_waitqueue_head(&wil->wq); 566 567 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 568 if (!wil->wmi_wq) 569 return -EAGAIN; 570 571 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 572 if (!wil->wq_service) 573 goto out_wmi_wq; 574 575 wil->last_fw_recovery = jiffies; 576 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 577 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 578 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 579 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 580 581 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 582 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 583 584 wil->ps_profile = WMI_PS_PROFILE_TYPE_DEFAULT; 585 586 wil->wakeup_trigger = WMI_WAKEUP_TRIGGER_UCAST | 587 WMI_WAKEUP_TRIGGER_BCAST; 588 memset(&wil->suspend_stats, 0, sizeof(wil->suspend_stats)); 589 wil->vring_idle_trsh = 16; 590 591 wil->reply_mid = U8_MAX; 592 wil->max_vifs = 1; 593 594 return 0; 595 596 out_wmi_wq: 597 destroy_workqueue(wil->wmi_wq); 598 599 return -EAGAIN; 600 } 601 602 void wil6210_bus_request(struct wil6210_priv *wil, u32 kbps) 603 { 604 if (wil->platform_ops.bus_request) { 605 wil->bus_request_kbps = kbps; 606 wil->platform_ops.bus_request(wil->platform_handle, kbps); 607 } 608 } 609 610 /** 611 * wil6210_disconnect - disconnect one connection 612 * @vif: virtual interface context 613 * @bssid: peer to disconnect, NULL to disconnect all 614 * @reason_code: Reason code for the Disassociation frame 615 * @from_event: whether is invoked from FW event handler 616 * 617 * Disconnect and release associated resources. If invoked not from the 618 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 619 */ 620 void wil6210_disconnect(struct wil6210_vif *vif, const u8 *bssid, 621 u16 reason_code, bool from_event) 622 { 623 struct wil6210_priv *wil = vif_to_wil(vif); 624 625 wil_dbg_misc(wil, "disconnect\n"); 626 627 del_timer_sync(&vif->connect_timer); 628 _wil6210_disconnect(vif, bssid, reason_code, from_event); 629 } 630 631 void wil_priv_deinit(struct wil6210_priv *wil) 632 { 633 wil_dbg_misc(wil, "priv_deinit\n"); 634 635 wil_set_recovery_state(wil, fw_recovery_idle); 636 cancel_work_sync(&wil->fw_error_worker); 637 wmi_event_flush(wil); 638 destroy_workqueue(wil->wq_service); 639 destroy_workqueue(wil->wmi_wq); 640 } 641 642 static void wil_shutdown_bl(struct wil6210_priv *wil) 643 { 644 u32 val; 645 646 wil_s(wil, RGF_USER_BL + 647 offsetof(struct bl_dedicated_registers_v1, 648 bl_shutdown_handshake), BL_SHUTDOWN_HS_GRTD); 649 650 usleep_range(100, 150); 651 652 val = wil_r(wil, RGF_USER_BL + 653 offsetof(struct bl_dedicated_registers_v1, 654 bl_shutdown_handshake)); 655 if (val & BL_SHUTDOWN_HS_RTD) { 656 wil_dbg_misc(wil, "BL is ready for halt\n"); 657 return; 658 } 659 660 wil_err(wil, "BL did not report ready for halt\n"); 661 } 662 663 /* this format is used by ARC embedded CPU for instruction memory */ 664 static inline u32 ARC_me_imm32(u32 d) 665 { 666 return ((d & 0xffff0000) >> 16) | ((d & 0x0000ffff) << 16); 667 } 668 669 /* defines access to interrupt vectors for wil_freeze_bl */ 670 #define ARC_IRQ_VECTOR_OFFSET(N) ((N) * 8) 671 /* ARC long jump instruction */ 672 #define ARC_JAL_INST (0x20200f80) 673 674 static void wil_freeze_bl(struct wil6210_priv *wil) 675 { 676 u32 jal, upc, saved; 677 u32 ivt3 = ARC_IRQ_VECTOR_OFFSET(3); 678 679 jal = wil_r(wil, wil->iccm_base + ivt3); 680 if (jal != ARC_me_imm32(ARC_JAL_INST)) { 681 wil_dbg_misc(wil, "invalid IVT entry found, skipping\n"); 682 return; 683 } 684 685 /* prevent the target from entering deep sleep 686 * and disabling memory access 687 */ 688 saved = wil_r(wil, RGF_USER_USAGE_8); 689 wil_w(wil, RGF_USER_USAGE_8, saved | BIT_USER_PREVENT_DEEP_SLEEP); 690 usleep_range(20, 25); /* let the BL process the bit */ 691 692 /* redirect to endless loop in the INT_L1 context and let it trap */ 693 wil_w(wil, wil->iccm_base + ivt3 + 4, ARC_me_imm32(ivt3)); 694 usleep_range(20, 25); /* let the BL get into the trap */ 695 696 /* verify the BL is frozen */ 697 upc = wil_r(wil, RGF_USER_CPU_PC); 698 if (upc < ivt3 || (upc > (ivt3 + 8))) 699 wil_dbg_misc(wil, "BL freeze failed, PC=0x%08X\n", upc); 700 701 wil_w(wil, RGF_USER_USAGE_8, saved); 702 } 703 704 static void wil_bl_prepare_halt(struct wil6210_priv *wil) 705 { 706 u32 tmp, ver; 707 708 /* before halting device CPU driver must make sure BL is not accessing 709 * host memory. This is done differently depending on BL version: 710 * 1. For very old BL versions the procedure is skipped 711 * (not supported). 712 * 2. For old BL version we use a special trick to freeze the BL 713 * 3. For new BL versions we shutdown the BL using handshake procedure. 714 */ 715 tmp = wil_r(wil, RGF_USER_BL + 716 offsetof(struct bl_dedicated_registers_v0, 717 boot_loader_struct_version)); 718 if (!tmp) { 719 wil_dbg_misc(wil, "old BL, skipping halt preparation\n"); 720 return; 721 } 722 723 tmp = wil_r(wil, RGF_USER_BL + 724 offsetof(struct bl_dedicated_registers_v1, 725 bl_shutdown_handshake)); 726 ver = BL_SHUTDOWN_HS_PROT_VER(tmp); 727 728 if (ver > 0) 729 wil_shutdown_bl(wil); 730 else 731 wil_freeze_bl(wil); 732 } 733 734 static inline void wil_halt_cpu(struct wil6210_priv *wil) 735 { 736 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 737 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 738 } 739 740 static inline void wil_release_cpu(struct wil6210_priv *wil) 741 { 742 /* Start CPU */ 743 wil_w(wil, RGF_USER_USER_CPU_0, 1); 744 } 745 746 static void wil_set_oob_mode(struct wil6210_priv *wil, u8 mode) 747 { 748 wil_info(wil, "oob_mode to %d\n", mode); 749 switch (mode) { 750 case 0: 751 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE | 752 BIT_USER_OOB_R2_MODE); 753 break; 754 case 1: 755 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 756 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 757 break; 758 case 2: 759 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 760 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 761 break; 762 default: 763 wil_err(wil, "invalid oob_mode: %d\n", mode); 764 } 765 } 766 767 static int wil_target_reset(struct wil6210_priv *wil, int no_flash) 768 { 769 int delay = 0; 770 u32 x, x1 = 0; 771 772 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 773 774 /* Clear MAC link up */ 775 wil_s(wil, RGF_HP_CTRL, BIT(15)); 776 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 777 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 778 779 wil_halt_cpu(wil); 780 781 if (!no_flash) { 782 /* clear all boot loader "ready" bits */ 783 wil_w(wil, RGF_USER_BL + 784 offsetof(struct bl_dedicated_registers_v0, 785 boot_loader_ready), 0); 786 /* this should be safe to write even with old BLs */ 787 wil_w(wil, RGF_USER_BL + 788 offsetof(struct bl_dedicated_registers_v1, 789 bl_shutdown_handshake), 0); 790 } 791 /* Clear Fw Download notification */ 792 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 793 794 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 795 /* XTAL stabilization should take about 3ms */ 796 usleep_range(5000, 7000); 797 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 798 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 799 wil_err(wil, "Xtal stabilization timeout\n" 800 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 801 return -ETIME; 802 } 803 /* switch 10k to XTAL*/ 804 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 805 /* 40 MHz */ 806 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 807 808 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 809 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 810 811 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 812 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 813 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 814 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 815 816 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 817 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 818 819 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 820 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 821 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 822 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 823 824 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 825 /* reset A2 PCIE AHB */ 826 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 827 828 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 829 830 /* wait until device ready. typical time is 20..80 msec */ 831 if (no_flash) 832 do { 833 msleep(RST_DELAY); 834 x = wil_r(wil, USER_EXT_USER_PMU_3); 835 if (delay++ > RST_COUNT) { 836 wil_err(wil, "Reset not completed, PMU_3 0x%08x\n", 837 x); 838 return -ETIME; 839 } 840 } while ((x & BIT_PMU_DEVICE_RDY) == 0); 841 else 842 do { 843 msleep(RST_DELAY); 844 x = wil_r(wil, RGF_USER_BL + 845 offsetof(struct bl_dedicated_registers_v0, 846 boot_loader_ready)); 847 if (x1 != x) { 848 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", 849 x1, x); 850 x1 = x; 851 } 852 if (delay++ > RST_COUNT) { 853 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 854 x); 855 return -ETIME; 856 } 857 } while (x != BL_READY); 858 859 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 860 861 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 862 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 863 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 864 865 if (no_flash) { 866 /* Reset OTP HW vectors to fit 40MHz */ 867 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME1, 0x60001); 868 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME2, 0x20027); 869 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME3, 0x1); 870 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME4, 0x20027); 871 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME5, 0x30003); 872 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME6, 0x20002); 873 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME7, 0x60001); 874 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME8, 0x60001); 875 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME9, 0x60001); 876 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME10, 0x60001); 877 wil_w(wil, RGF_USER_XPM_RD_DOUT_SAMPLE_TIME, 0x57); 878 } 879 880 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 881 return 0; 882 } 883 884 static void wil_collect_fw_info(struct wil6210_priv *wil) 885 { 886 struct wiphy *wiphy = wil_to_wiphy(wil); 887 u8 retry_short; 888 int rc; 889 890 wil_refresh_fw_capabilities(wil); 891 892 rc = wmi_get_mgmt_retry(wil, &retry_short); 893 if (!rc) { 894 wiphy->retry_short = retry_short; 895 wil_dbg_misc(wil, "FW retry_short: %d\n", retry_short); 896 } 897 } 898 899 void wil_refresh_fw_capabilities(struct wil6210_priv *wil) 900 { 901 struct wiphy *wiphy = wil_to_wiphy(wil); 902 int features; 903 904 wil->keep_radio_on_during_sleep = 905 test_bit(WIL_PLATFORM_CAPA_RADIO_ON_IN_SUSPEND, 906 wil->platform_capa) && 907 test_bit(WMI_FW_CAPABILITY_D3_SUSPEND, wil->fw_capabilities); 908 909 wil_info(wil, "keep_radio_on_during_sleep (%d)\n", 910 wil->keep_radio_on_during_sleep); 911 912 if (test_bit(WMI_FW_CAPABILITY_RSSI_REPORTING, wil->fw_capabilities)) 913 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 914 else 915 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; 916 917 if (test_bit(WMI_FW_CAPABILITY_PNO, wil->fw_capabilities)) { 918 wiphy->max_sched_scan_reqs = 1; 919 wiphy->max_sched_scan_ssids = WMI_MAX_PNO_SSID_NUM; 920 wiphy->max_match_sets = WMI_MAX_PNO_SSID_NUM; 921 wiphy->max_sched_scan_ie_len = WMI_MAX_IE_LEN; 922 wiphy->max_sched_scan_plans = WMI_MAX_PLANS_NUM; 923 } 924 925 if (wil->platform_ops.set_features) { 926 features = (test_bit(WMI_FW_CAPABILITY_REF_CLOCK_CONTROL, 927 wil->fw_capabilities) && 928 test_bit(WIL_PLATFORM_CAPA_EXT_CLK, 929 wil->platform_capa)) ? 930 BIT(WIL_PLATFORM_FEATURE_FW_EXT_CLK_CONTROL) : 0; 931 932 wil->platform_ops.set_features(wil->platform_handle, features); 933 } 934 } 935 936 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 937 { 938 le32_to_cpus(&r->base); 939 le16_to_cpus(&r->entry_size); 940 le16_to_cpus(&r->size); 941 le32_to_cpus(&r->tail); 942 le32_to_cpus(&r->head); 943 } 944 945 static int wil_get_bl_info(struct wil6210_priv *wil) 946 { 947 struct net_device *ndev = wil->main_ndev; 948 struct wiphy *wiphy = wil_to_wiphy(wil); 949 union { 950 struct bl_dedicated_registers_v0 bl0; 951 struct bl_dedicated_registers_v1 bl1; 952 } bl; 953 u32 bl_ver; 954 u8 *mac; 955 u16 rf_status; 956 957 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 958 sizeof(bl)); 959 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 960 mac = bl.bl0.mac_address; 961 962 if (bl_ver == 0) { 963 le32_to_cpus(&bl.bl0.rf_type); 964 le32_to_cpus(&bl.bl0.baseband_type); 965 rf_status = 0; /* actually, unknown */ 966 wil_info(wil, 967 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 968 bl_ver, mac, 969 bl.bl0.rf_type, bl.bl0.baseband_type); 970 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 971 } else { 972 le16_to_cpus(&bl.bl1.rf_type); 973 rf_status = le16_to_cpu(bl.bl1.rf_status); 974 le32_to_cpus(&bl.bl1.baseband_type); 975 le16_to_cpus(&bl.bl1.bl_version_subminor); 976 le16_to_cpus(&bl.bl1.bl_version_build); 977 wil_info(wil, 978 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 979 bl_ver, mac, 980 bl.bl1.rf_type, rf_status, 981 bl.bl1.baseband_type); 982 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 983 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 984 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 985 } 986 987 if (!is_valid_ether_addr(mac)) { 988 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 989 return -EINVAL; 990 } 991 992 ether_addr_copy(ndev->perm_addr, mac); 993 ether_addr_copy(wiphy->perm_addr, mac); 994 if (!is_valid_ether_addr(ndev->dev_addr)) 995 ether_addr_copy(ndev->dev_addr, mac); 996 997 if (rf_status) {/* bad RF cable? */ 998 wil_err(wil, "RF communication error 0x%04x", 999 rf_status); 1000 return -EAGAIN; 1001 } 1002 1003 return 0; 1004 } 1005 1006 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 1007 { 1008 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 1009 u32 bl_ver = wil_r(wil, RGF_USER_BL + 1010 offsetof(struct bl_dedicated_registers_v0, 1011 boot_loader_struct_version)); 1012 1013 if (bl_ver < 2) 1014 return; 1015 1016 bl_assert_code = wil_r(wil, RGF_USER_BL + 1017 offsetof(struct bl_dedicated_registers_v1, 1018 bl_assert_code)); 1019 bl_assert_blink = wil_r(wil, RGF_USER_BL + 1020 offsetof(struct bl_dedicated_registers_v1, 1021 bl_assert_blink)); 1022 bl_magic_number = wil_r(wil, RGF_USER_BL + 1023 offsetof(struct bl_dedicated_registers_v1, 1024 bl_magic_number)); 1025 1026 if (is_err) { 1027 wil_err(wil, 1028 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 1029 bl_assert_code, bl_assert_blink, bl_magic_number); 1030 } else { 1031 wil_dbg_misc(wil, 1032 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 1033 bl_assert_code, bl_assert_blink, bl_magic_number); 1034 } 1035 } 1036 1037 static int wil_get_otp_info(struct wil6210_priv *wil) 1038 { 1039 struct net_device *ndev = wil->main_ndev; 1040 struct wiphy *wiphy = wil_to_wiphy(wil); 1041 u8 mac[8]; 1042 1043 wil_memcpy_fromio_32(mac, wil->csr + HOSTADDR(RGF_OTP_MAC), 1044 sizeof(mac)); 1045 if (!is_valid_ether_addr(mac)) { 1046 wil_err(wil, "Invalid MAC %pM\n", mac); 1047 return -EINVAL; 1048 } 1049 1050 ether_addr_copy(ndev->perm_addr, mac); 1051 ether_addr_copy(wiphy->perm_addr, mac); 1052 if (!is_valid_ether_addr(ndev->dev_addr)) 1053 ether_addr_copy(ndev->dev_addr, mac); 1054 1055 return 0; 1056 } 1057 1058 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 1059 { 1060 ulong to = msecs_to_jiffies(1000); 1061 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 1062 1063 if (0 == left) { 1064 wil_err(wil, "Firmware not ready\n"); 1065 return -ETIME; 1066 } else { 1067 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 1068 jiffies_to_msecs(to-left), wil->hw_version); 1069 } 1070 return 0; 1071 } 1072 1073 void wil_abort_scan(struct wil6210_vif *vif, bool sync) 1074 { 1075 struct wil6210_priv *wil = vif_to_wil(vif); 1076 int rc; 1077 struct cfg80211_scan_info info = { 1078 .aborted = true, 1079 }; 1080 1081 lockdep_assert_held(&wil->vif_mutex); 1082 1083 if (!vif->scan_request) 1084 return; 1085 1086 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", vif->scan_request); 1087 del_timer_sync(&vif->scan_timer); 1088 mutex_unlock(&wil->vif_mutex); 1089 rc = wmi_abort_scan(vif); 1090 if (!rc && sync) 1091 wait_event_interruptible_timeout(wil->wq, !vif->scan_request, 1092 msecs_to_jiffies( 1093 WAIT_FOR_SCAN_ABORT_MS)); 1094 1095 mutex_lock(&wil->vif_mutex); 1096 if (vif->scan_request) { 1097 cfg80211_scan_done(vif->scan_request, &info); 1098 vif->scan_request = NULL; 1099 } 1100 } 1101 1102 void wil_abort_scan_all_vifs(struct wil6210_priv *wil, bool sync) 1103 { 1104 int i; 1105 1106 lockdep_assert_held(&wil->vif_mutex); 1107 1108 for (i = 0; i < wil->max_vifs; i++) { 1109 struct wil6210_vif *vif = wil->vifs[i]; 1110 1111 if (vif) 1112 wil_abort_scan(vif, sync); 1113 } 1114 } 1115 1116 int wil_ps_update(struct wil6210_priv *wil, enum wmi_ps_profile_type ps_profile) 1117 { 1118 int rc; 1119 1120 if (!test_bit(WMI_FW_CAPABILITY_PS_CONFIG, wil->fw_capabilities)) { 1121 wil_err(wil, "set_power_mgmt not supported\n"); 1122 return -EOPNOTSUPP; 1123 } 1124 1125 rc = wmi_ps_dev_profile_cfg(wil, ps_profile); 1126 if (rc) 1127 wil_err(wil, "wmi_ps_dev_profile_cfg failed (%d)\n", rc); 1128 else 1129 wil->ps_profile = ps_profile; 1130 1131 return rc; 1132 } 1133 1134 static void wil_pre_fw_config(struct wil6210_priv *wil) 1135 { 1136 /* Mark FW as loaded from host */ 1137 wil_s(wil, RGF_USER_USAGE_6, 1); 1138 1139 /* clear any interrupts which on-card-firmware 1140 * may have set 1141 */ 1142 wil6210_clear_irq(wil); 1143 /* CAF_ICR - clear and mask */ 1144 /* it is W1C, clear by writing back same value */ 1145 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 1146 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 1147 /* clear PAL_UNIT_ICR (potential D0->D3 leftover) */ 1148 wil_s(wil, RGF_PAL_UNIT_ICR + offsetof(struct RGF_ICR, ICR), 0); 1149 1150 if (wil->fw_calib_result > 0) { 1151 __le32 val = cpu_to_le32(wil->fw_calib_result | 1152 (CALIB_RESULT_SIGNATURE << 8)); 1153 wil_w(wil, RGF_USER_FW_CALIB_RESULT, (u32 __force)val); 1154 } 1155 } 1156 1157 static int wil_restore_vifs(struct wil6210_priv *wil) 1158 { 1159 struct wil6210_vif *vif; 1160 struct net_device *ndev; 1161 struct wireless_dev *wdev; 1162 int i, rc; 1163 1164 for (i = 0; i < wil->max_vifs; i++) { 1165 vif = wil->vifs[i]; 1166 if (!vif) 1167 continue; 1168 vif->ap_isolate = 0; 1169 if (vif->mid) { 1170 ndev = vif_to_ndev(vif); 1171 wdev = vif_to_wdev(vif); 1172 rc = wmi_port_allocate(wil, vif->mid, ndev->dev_addr, 1173 wdev->iftype); 1174 if (rc) { 1175 wil_err(wil, "fail to restore VIF %d type %d, rc %d\n", 1176 i, wdev->iftype, rc); 1177 return rc; 1178 } 1179 } 1180 } 1181 1182 return 0; 1183 } 1184 1185 /* 1186 * We reset all the structures, and we reset the UMAC. 1187 * After calling this routine, you're expected to reload 1188 * the firmware. 1189 */ 1190 int wil_reset(struct wil6210_priv *wil, bool load_fw) 1191 { 1192 int rc, i; 1193 unsigned long status_flags = BIT(wil_status_resetting); 1194 int no_flash; 1195 struct wil6210_vif *vif; 1196 1197 wil_dbg_misc(wil, "reset\n"); 1198 1199 WARN_ON(!mutex_is_locked(&wil->mutex)); 1200 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 1201 1202 if (debug_fw) { 1203 static const u8 mac[ETH_ALEN] = { 1204 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 1205 }; 1206 struct net_device *ndev = wil->main_ndev; 1207 1208 ether_addr_copy(ndev->perm_addr, mac); 1209 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 1210 return 0; 1211 } 1212 1213 if (wil->hw_version == HW_VER_UNKNOWN) 1214 return -ENODEV; 1215 1216 if (test_bit(WIL_PLATFORM_CAPA_T_PWR_ON_0, wil->platform_capa)) { 1217 wil_dbg_misc(wil, "Notify FW to set T_POWER_ON=0\n"); 1218 wil_s(wil, RGF_USER_USAGE_8, BIT_USER_SUPPORT_T_POWER_ON_0); 1219 } 1220 1221 if (test_bit(WIL_PLATFORM_CAPA_EXT_CLK, wil->platform_capa)) { 1222 wil_dbg_misc(wil, "Notify FW on ext clock configuration\n"); 1223 wil_s(wil, RGF_USER_USAGE_8, BIT_USER_EXT_CLK); 1224 } 1225 1226 if (wil->platform_ops.notify) { 1227 rc = wil->platform_ops.notify(wil->platform_handle, 1228 WIL_PLATFORM_EVT_PRE_RESET); 1229 if (rc) 1230 wil_err(wil, "PRE_RESET platform notify failed, rc %d\n", 1231 rc); 1232 } 1233 1234 set_bit(wil_status_resetting, wil->status); 1235 if (test_bit(wil_status_collecting_dumps, wil->status)) { 1236 /* Device collects crash dump, cancel the reset. 1237 * following crash dump collection, reset would take place. 1238 */ 1239 wil_dbg_misc(wil, "reject reset while collecting crash dump\n"); 1240 rc = -EBUSY; 1241 goto out; 1242 } 1243 1244 mutex_lock(&wil->vif_mutex); 1245 wil_abort_scan_all_vifs(wil, false); 1246 mutex_unlock(&wil->vif_mutex); 1247 1248 for (i = 0; i < wil->max_vifs; i++) { 1249 vif = wil->vifs[i]; 1250 if (vif) { 1251 cancel_work_sync(&vif->disconnect_worker); 1252 wil6210_disconnect(vif, NULL, 1253 WLAN_REASON_DEAUTH_LEAVING, false); 1254 } 1255 } 1256 wil_bcast_fini_all(wil); 1257 1258 /* Disable device led before reset*/ 1259 wmi_led_cfg(wil, false); 1260 1261 /* prevent NAPI from being scheduled and prevent wmi commands */ 1262 mutex_lock(&wil->wmi_mutex); 1263 if (test_bit(wil_status_suspending, wil->status)) 1264 status_flags |= BIT(wil_status_suspending); 1265 bitmap_and(wil->status, wil->status, &status_flags, 1266 wil_status_last); 1267 wil_dbg_misc(wil, "wil->status (0x%lx)\n", *wil->status); 1268 mutex_unlock(&wil->wmi_mutex); 1269 1270 wil_mask_irq(wil); 1271 1272 wmi_event_flush(wil); 1273 1274 flush_workqueue(wil->wq_service); 1275 flush_workqueue(wil->wmi_wq); 1276 1277 no_flash = test_bit(hw_capa_no_flash, wil->hw_capa); 1278 if (!no_flash) 1279 wil_bl_crash_info(wil, false); 1280 wil_disable_irq(wil); 1281 rc = wil_target_reset(wil, no_flash); 1282 wil6210_clear_irq(wil); 1283 wil_enable_irq(wil); 1284 wil_rx_fini(wil); 1285 if (rc) { 1286 if (!no_flash) 1287 wil_bl_crash_info(wil, true); 1288 goto out; 1289 } 1290 1291 if (no_flash) { 1292 rc = wil_get_otp_info(wil); 1293 } else { 1294 rc = wil_get_bl_info(wil); 1295 if (rc == -EAGAIN && !load_fw) 1296 /* ignore RF error if not going up */ 1297 rc = 0; 1298 } 1299 if (rc) 1300 goto out; 1301 1302 wil_set_oob_mode(wil, oob_mode); 1303 if (load_fw) { 1304 wil_info(wil, "Use firmware <%s> + board <%s>\n", 1305 wil->wil_fw_name, WIL_BOARD_FILE_NAME); 1306 1307 if (!no_flash) 1308 wil_bl_prepare_halt(wil); 1309 1310 wil_halt_cpu(wil); 1311 memset(wil->fw_version, 0, sizeof(wil->fw_version)); 1312 /* Loading f/w from the file */ 1313 rc = wil_request_firmware(wil, wil->wil_fw_name, true); 1314 if (rc) 1315 goto out; 1316 if (wil->brd_file_addr) 1317 rc = wil_request_board(wil, WIL_BOARD_FILE_NAME); 1318 else 1319 rc = wil_request_firmware(wil, 1320 WIL_BOARD_FILE_NAME, 1321 true); 1322 if (rc) 1323 goto out; 1324 1325 wil_pre_fw_config(wil); 1326 wil_release_cpu(wil); 1327 } 1328 1329 /* init after reset */ 1330 reinit_completion(&wil->wmi_ready); 1331 reinit_completion(&wil->wmi_call); 1332 reinit_completion(&wil->halp.comp); 1333 1334 clear_bit(wil_status_resetting, wil->status); 1335 1336 if (load_fw) { 1337 wil_configure_interrupt_moderation(wil); 1338 wil_unmask_irq(wil); 1339 1340 /* we just started MAC, wait for FW ready */ 1341 rc = wil_wait_for_fw_ready(wil); 1342 if (rc) 1343 return rc; 1344 1345 /* check FW is responsive */ 1346 rc = wmi_echo(wil); 1347 if (rc) { 1348 wil_err(wil, "wmi_echo failed, rc %d\n", rc); 1349 return rc; 1350 } 1351 1352 rc = wil_restore_vifs(wil); 1353 if (rc) { 1354 wil_err(wil, "failed to restore vifs, rc %d\n", rc); 1355 return rc; 1356 } 1357 1358 wil_collect_fw_info(wil); 1359 1360 if (wil->ps_profile != WMI_PS_PROFILE_TYPE_DEFAULT) 1361 wil_ps_update(wil, wil->ps_profile); 1362 1363 if (wil->platform_ops.notify) { 1364 rc = wil->platform_ops.notify(wil->platform_handle, 1365 WIL_PLATFORM_EVT_FW_RDY); 1366 if (rc) { 1367 wil_err(wil, "FW_RDY notify failed, rc %d\n", 1368 rc); 1369 rc = 0; 1370 } 1371 } 1372 } 1373 1374 return rc; 1375 1376 out: 1377 clear_bit(wil_status_resetting, wil->status); 1378 return rc; 1379 } 1380 1381 void wil_fw_error_recovery(struct wil6210_priv *wil) 1382 { 1383 wil_dbg_misc(wil, "starting fw error recovery\n"); 1384 1385 if (test_bit(wil_status_resetting, wil->status)) { 1386 wil_info(wil, "Reset already in progress\n"); 1387 return; 1388 } 1389 1390 wil->recovery_state = fw_recovery_pending; 1391 schedule_work(&wil->fw_error_worker); 1392 } 1393 1394 int __wil_up(struct wil6210_priv *wil) 1395 { 1396 struct net_device *ndev = wil->main_ndev; 1397 struct wireless_dev *wdev = ndev->ieee80211_ptr; 1398 int rc; 1399 1400 WARN_ON(!mutex_is_locked(&wil->mutex)); 1401 1402 rc = wil_reset(wil, true); 1403 if (rc) 1404 return rc; 1405 1406 /* Rx VRING. After MAC and beacon */ 1407 rc = wil_rx_init(wil, 1 << rx_ring_order); 1408 if (rc) 1409 return rc; 1410 1411 switch (wdev->iftype) { 1412 case NL80211_IFTYPE_STATION: 1413 wil_dbg_misc(wil, "type: STATION\n"); 1414 ndev->type = ARPHRD_ETHER; 1415 break; 1416 case NL80211_IFTYPE_AP: 1417 wil_dbg_misc(wil, "type: AP\n"); 1418 ndev->type = ARPHRD_ETHER; 1419 break; 1420 case NL80211_IFTYPE_P2P_CLIENT: 1421 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 1422 ndev->type = ARPHRD_ETHER; 1423 break; 1424 case NL80211_IFTYPE_P2P_GO: 1425 wil_dbg_misc(wil, "type: P2P_GO\n"); 1426 ndev->type = ARPHRD_ETHER; 1427 break; 1428 case NL80211_IFTYPE_MONITOR: 1429 wil_dbg_misc(wil, "type: Monitor\n"); 1430 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 1431 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 1432 break; 1433 default: 1434 return -EOPNOTSUPP; 1435 } 1436 1437 /* MAC address - pre-requisite for other commands */ 1438 wmi_set_mac_address(wil, ndev->dev_addr); 1439 1440 wil_dbg_misc(wil, "NAPI enable\n"); 1441 napi_enable(&wil->napi_rx); 1442 napi_enable(&wil->napi_tx); 1443 set_bit(wil_status_napi_en, wil->status); 1444 1445 wil6210_bus_request(wil, WIL_DEFAULT_BUS_REQUEST_KBPS); 1446 1447 return 0; 1448 } 1449 1450 int wil_up(struct wil6210_priv *wil) 1451 { 1452 int rc; 1453 1454 wil_dbg_misc(wil, "up\n"); 1455 1456 mutex_lock(&wil->mutex); 1457 rc = __wil_up(wil); 1458 mutex_unlock(&wil->mutex); 1459 1460 return rc; 1461 } 1462 1463 int __wil_down(struct wil6210_priv *wil) 1464 { 1465 WARN_ON(!mutex_is_locked(&wil->mutex)); 1466 1467 set_bit(wil_status_resetting, wil->status); 1468 1469 wil6210_bus_request(wil, 0); 1470 1471 wil_disable_irq(wil); 1472 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 1473 napi_disable(&wil->napi_rx); 1474 napi_disable(&wil->napi_tx); 1475 wil_dbg_misc(wil, "NAPI disable\n"); 1476 } 1477 wil_enable_irq(wil); 1478 1479 mutex_lock(&wil->vif_mutex); 1480 wil_p2p_stop_radio_operations(wil); 1481 wil_abort_scan_all_vifs(wil, false); 1482 mutex_unlock(&wil->vif_mutex); 1483 1484 return wil_reset(wil, false); 1485 } 1486 1487 int wil_down(struct wil6210_priv *wil) 1488 { 1489 int rc; 1490 1491 wil_dbg_misc(wil, "down\n"); 1492 1493 wil_set_recovery_state(wil, fw_recovery_idle); 1494 mutex_lock(&wil->mutex); 1495 rc = __wil_down(wil); 1496 mutex_unlock(&wil->mutex); 1497 1498 return rc; 1499 } 1500 1501 int wil_find_cid(struct wil6210_priv *wil, u8 mid, const u8 *mac) 1502 { 1503 int i; 1504 int rc = -ENOENT; 1505 1506 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1507 if (wil->sta[i].mid == mid && 1508 wil->sta[i].status != wil_sta_unused && 1509 ether_addr_equal(wil->sta[i].addr, mac)) { 1510 rc = i; 1511 break; 1512 } 1513 } 1514 1515 return rc; 1516 } 1517 1518 void wil_halp_vote(struct wil6210_priv *wil) 1519 { 1520 unsigned long rc; 1521 unsigned long to_jiffies = msecs_to_jiffies(WAIT_FOR_HALP_VOTE_MS); 1522 1523 mutex_lock(&wil->halp.lock); 1524 1525 wil_dbg_irq(wil, "halp_vote: start, HALP ref_cnt (%d)\n", 1526 wil->halp.ref_cnt); 1527 1528 if (++wil->halp.ref_cnt == 1) { 1529 reinit_completion(&wil->halp.comp); 1530 wil6210_set_halp(wil); 1531 rc = wait_for_completion_timeout(&wil->halp.comp, to_jiffies); 1532 if (!rc) { 1533 wil_err(wil, "HALP vote timed out\n"); 1534 /* Mask HALP as done in case the interrupt is raised */ 1535 wil6210_mask_halp(wil); 1536 } else { 1537 wil_dbg_irq(wil, 1538 "halp_vote: HALP vote completed after %d ms\n", 1539 jiffies_to_msecs(to_jiffies - rc)); 1540 } 1541 } 1542 1543 wil_dbg_irq(wil, "halp_vote: end, HALP ref_cnt (%d)\n", 1544 wil->halp.ref_cnt); 1545 1546 mutex_unlock(&wil->halp.lock); 1547 } 1548 1549 void wil_halp_unvote(struct wil6210_priv *wil) 1550 { 1551 WARN_ON(wil->halp.ref_cnt == 0); 1552 1553 mutex_lock(&wil->halp.lock); 1554 1555 wil_dbg_irq(wil, "halp_unvote: start, HALP ref_cnt (%d)\n", 1556 wil->halp.ref_cnt); 1557 1558 if (--wil->halp.ref_cnt == 0) { 1559 wil6210_clear_halp(wil); 1560 wil_dbg_irq(wil, "HALP unvote\n"); 1561 } 1562 1563 wil_dbg_irq(wil, "halp_unvote:end, HALP ref_cnt (%d)\n", 1564 wil->halp.ref_cnt); 1565 1566 mutex_unlock(&wil->halp.lock); 1567 } 1568