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; 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 wdev = ndev->ieee80211_ptr; 403 404 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 405 * passed since last recovery attempt 406 */ 407 if (time_is_after_jiffies(wil->last_fw_recovery + 408 WIL6210_FW_RECOVERY_TO)) 409 wil->recovery_count++; 410 else 411 wil->recovery_count = 1; /* fw was alive for a long time */ 412 413 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 414 wil_err(wil, "too many recovery attempts (%d), giving up\n", 415 wil->recovery_count); 416 return; 417 } 418 419 wil->last_fw_recovery = jiffies; 420 421 wil_info(wil, "fw error recovery requested (try %d)...\n", 422 wil->recovery_count); 423 if (!no_fw_recovery) 424 wil->recovery_state = fw_recovery_running; 425 if (wil_wait_for_recovery(wil) != 0) 426 return; 427 428 mutex_lock(&wil->mutex); 429 /* Needs adaptation for multiple VIFs 430 * need to go over all VIFs and consider the appropriate 431 * recovery. 432 */ 433 switch (wdev->iftype) { 434 case NL80211_IFTYPE_STATION: 435 case NL80211_IFTYPE_P2P_CLIENT: 436 case NL80211_IFTYPE_MONITOR: 437 /* silent recovery, upper layers will see disconnect */ 438 __wil_down(wil); 439 __wil_up(wil); 440 break; 441 case NL80211_IFTYPE_AP: 442 case NL80211_IFTYPE_P2P_GO: 443 wil_info(wil, "No recovery for AP-like interface\n"); 444 /* recovery in these modes is done by upper layers */ 445 break; 446 default: 447 wil_err(wil, "No recovery - unknown interface type %d\n", 448 wdev->iftype); 449 break; 450 } 451 mutex_unlock(&wil->mutex); 452 } 453 454 static int wil_find_free_vring(struct wil6210_priv *wil) 455 { 456 int i; 457 458 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 459 if (!wil->vring_tx[i].va) 460 return i; 461 } 462 return -EINVAL; 463 } 464 465 int wil_tx_init(struct wil6210_vif *vif, int cid) 466 { 467 struct wil6210_priv *wil = vif_to_wil(vif); 468 int rc = -EINVAL, ringid; 469 470 if (cid < 0) { 471 wil_err(wil, "No connection pending\n"); 472 goto out; 473 } 474 ringid = wil_find_free_vring(wil); 475 if (ringid < 0) { 476 wil_err(wil, "No free vring found\n"); 477 goto out; 478 } 479 480 wil_dbg_wmi(wil, "Configure for connection CID %d MID %d vring %d\n", 481 cid, vif->mid, ringid); 482 483 rc = wil_vring_init_tx(vif, ringid, 1 << tx_ring_order, cid, 0); 484 if (rc) 485 wil_err(wil, "init TX for CID %d MID %d vring %d failed\n", 486 cid, vif->mid, ringid); 487 488 out: 489 return rc; 490 } 491 492 int wil_bcast_init(struct wil6210_vif *vif) 493 { 494 struct wil6210_priv *wil = vif_to_wil(vif); 495 int ri = vif->bcast_vring, rc; 496 497 if ((ri >= 0) && wil->vring_tx[ri].va) 498 return 0; 499 500 ri = wil_find_free_vring(wil); 501 if (ri < 0) 502 return ri; 503 504 vif->bcast_vring = ri; 505 rc = wil_vring_init_bcast(vif, ri, 1 << bcast_ring_order); 506 if (rc) 507 vif->bcast_vring = -1; 508 509 return rc; 510 } 511 512 void wil_bcast_fini(struct wil6210_vif *vif) 513 { 514 struct wil6210_priv *wil = vif_to_wil(vif); 515 int ri = vif->bcast_vring; 516 517 if (ri < 0) 518 return; 519 520 vif->bcast_vring = -1; 521 wil_vring_fini_tx(wil, ri); 522 } 523 524 void wil_bcast_fini_all(struct wil6210_priv *wil) 525 { 526 int i; 527 struct wil6210_vif *vif; 528 529 for (i = 0; i < wil->max_vifs; i++) { 530 vif = wil->vifs[i]; 531 if (vif) 532 wil_bcast_fini(vif); 533 } 534 } 535 536 int wil_priv_init(struct wil6210_priv *wil) 537 { 538 uint i; 539 540 wil_dbg_misc(wil, "priv_init\n"); 541 542 memset(wil->sta, 0, sizeof(wil->sta)); 543 for (i = 0; i < WIL6210_MAX_CID; i++) { 544 spin_lock_init(&wil->sta[i].tid_rx_lock); 545 wil->sta[i].mid = U8_MAX; 546 } 547 548 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) 549 spin_lock_init(&wil->vring_tx_data[i].lock); 550 551 mutex_init(&wil->mutex); 552 mutex_init(&wil->vif_mutex); 553 mutex_init(&wil->wmi_mutex); 554 mutex_init(&wil->halp.lock); 555 556 init_completion(&wil->wmi_ready); 557 init_completion(&wil->wmi_call); 558 init_completion(&wil->halp.comp); 559 560 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 561 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 562 563 INIT_LIST_HEAD(&wil->pending_wmi_ev); 564 spin_lock_init(&wil->wmi_ev_lock); 565 spin_lock_init(&wil->net_queue_lock); 566 init_waitqueue_head(&wil->wq); 567 568 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 569 if (!wil->wmi_wq) 570 return -EAGAIN; 571 572 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 573 if (!wil->wq_service) 574 goto out_wmi_wq; 575 576 wil->last_fw_recovery = jiffies; 577 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 578 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 579 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 580 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 581 582 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 583 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 584 585 wil->ps_profile = WMI_PS_PROFILE_TYPE_DEFAULT; 586 587 wil->wakeup_trigger = WMI_WAKEUP_TRIGGER_UCAST | 588 WMI_WAKEUP_TRIGGER_BCAST; 589 memset(&wil->suspend_stats, 0, sizeof(wil->suspend_stats)); 590 wil->vring_idle_trsh = 16; 591 592 wil->reply_mid = U8_MAX; 593 wil->max_vifs = 1; 594 595 return 0; 596 597 out_wmi_wq: 598 destroy_workqueue(wil->wmi_wq); 599 600 return -EAGAIN; 601 } 602 603 void wil6210_bus_request(struct wil6210_priv *wil, u32 kbps) 604 { 605 if (wil->platform_ops.bus_request) { 606 wil->bus_request_kbps = kbps; 607 wil->platform_ops.bus_request(wil->platform_handle, kbps); 608 } 609 } 610 611 /** 612 * wil6210_disconnect - disconnect one connection 613 * @vif: virtual interface context 614 * @bssid: peer to disconnect, NULL to disconnect all 615 * @reason_code: Reason code for the Disassociation frame 616 * @from_event: whether is invoked from FW event handler 617 * 618 * Disconnect and release associated resources. If invoked not from the 619 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 620 */ 621 void wil6210_disconnect(struct wil6210_vif *vif, const u8 *bssid, 622 u16 reason_code, bool from_event) 623 { 624 struct wil6210_priv *wil = vif_to_wil(vif); 625 626 wil_dbg_misc(wil, "disconnect\n"); 627 628 del_timer_sync(&vif->connect_timer); 629 _wil6210_disconnect(vif, bssid, reason_code, from_event); 630 } 631 632 void wil_priv_deinit(struct wil6210_priv *wil) 633 { 634 wil_dbg_misc(wil, "priv_deinit\n"); 635 636 wil_set_recovery_state(wil, fw_recovery_idle); 637 cancel_work_sync(&wil->fw_error_worker); 638 wmi_event_flush(wil); 639 destroy_workqueue(wil->wq_service); 640 destroy_workqueue(wil->wmi_wq); 641 } 642 643 static void wil_shutdown_bl(struct wil6210_priv *wil) 644 { 645 u32 val; 646 647 wil_s(wil, RGF_USER_BL + 648 offsetof(struct bl_dedicated_registers_v1, 649 bl_shutdown_handshake), BL_SHUTDOWN_HS_GRTD); 650 651 usleep_range(100, 150); 652 653 val = wil_r(wil, RGF_USER_BL + 654 offsetof(struct bl_dedicated_registers_v1, 655 bl_shutdown_handshake)); 656 if (val & BL_SHUTDOWN_HS_RTD) { 657 wil_dbg_misc(wil, "BL is ready for halt\n"); 658 return; 659 } 660 661 wil_err(wil, "BL did not report ready for halt\n"); 662 } 663 664 /* this format is used by ARC embedded CPU for instruction memory */ 665 static inline u32 ARC_me_imm32(u32 d) 666 { 667 return ((d & 0xffff0000) >> 16) | ((d & 0x0000ffff) << 16); 668 } 669 670 /* defines access to interrupt vectors for wil_freeze_bl */ 671 #define ARC_IRQ_VECTOR_OFFSET(N) ((N) * 8) 672 /* ARC long jump instruction */ 673 #define ARC_JAL_INST (0x20200f80) 674 675 static void wil_freeze_bl(struct wil6210_priv *wil) 676 { 677 u32 jal, upc, saved; 678 u32 ivt3 = ARC_IRQ_VECTOR_OFFSET(3); 679 680 jal = wil_r(wil, wil->iccm_base + ivt3); 681 if (jal != ARC_me_imm32(ARC_JAL_INST)) { 682 wil_dbg_misc(wil, "invalid IVT entry found, skipping\n"); 683 return; 684 } 685 686 /* prevent the target from entering deep sleep 687 * and disabling memory access 688 */ 689 saved = wil_r(wil, RGF_USER_USAGE_8); 690 wil_w(wil, RGF_USER_USAGE_8, saved | BIT_USER_PREVENT_DEEP_SLEEP); 691 usleep_range(20, 25); /* let the BL process the bit */ 692 693 /* redirect to endless loop in the INT_L1 context and let it trap */ 694 wil_w(wil, wil->iccm_base + ivt3 + 4, ARC_me_imm32(ivt3)); 695 usleep_range(20, 25); /* let the BL get into the trap */ 696 697 /* verify the BL is frozen */ 698 upc = wil_r(wil, RGF_USER_CPU_PC); 699 if (upc < ivt3 || (upc > (ivt3 + 8))) 700 wil_dbg_misc(wil, "BL freeze failed, PC=0x%08X\n", upc); 701 702 wil_w(wil, RGF_USER_USAGE_8, saved); 703 } 704 705 static void wil_bl_prepare_halt(struct wil6210_priv *wil) 706 { 707 u32 tmp, ver; 708 709 /* before halting device CPU driver must make sure BL is not accessing 710 * host memory. This is done differently depending on BL version: 711 * 1. For very old BL versions the procedure is skipped 712 * (not supported). 713 * 2. For old BL version we use a special trick to freeze the BL 714 * 3. For new BL versions we shutdown the BL using handshake procedure. 715 */ 716 tmp = wil_r(wil, RGF_USER_BL + 717 offsetof(struct bl_dedicated_registers_v0, 718 boot_loader_struct_version)); 719 if (!tmp) { 720 wil_dbg_misc(wil, "old BL, skipping halt preparation\n"); 721 return; 722 } 723 724 tmp = wil_r(wil, RGF_USER_BL + 725 offsetof(struct bl_dedicated_registers_v1, 726 bl_shutdown_handshake)); 727 ver = BL_SHUTDOWN_HS_PROT_VER(tmp); 728 729 if (ver > 0) 730 wil_shutdown_bl(wil); 731 else 732 wil_freeze_bl(wil); 733 } 734 735 static inline void wil_halt_cpu(struct wil6210_priv *wil) 736 { 737 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 738 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 739 } 740 741 static inline void wil_release_cpu(struct wil6210_priv *wil) 742 { 743 /* Start CPU */ 744 wil_w(wil, RGF_USER_USER_CPU_0, 1); 745 } 746 747 static void wil_set_oob_mode(struct wil6210_priv *wil, u8 mode) 748 { 749 wil_info(wil, "oob_mode to %d\n", mode); 750 switch (mode) { 751 case 0: 752 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE | 753 BIT_USER_OOB_R2_MODE); 754 break; 755 case 1: 756 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 757 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 758 break; 759 case 2: 760 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 761 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 762 break; 763 default: 764 wil_err(wil, "invalid oob_mode: %d\n", mode); 765 } 766 } 767 768 static int wil_target_reset(struct wil6210_priv *wil, int no_flash) 769 { 770 int delay = 0; 771 u32 x, x1 = 0; 772 773 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 774 775 /* Clear MAC link up */ 776 wil_s(wil, RGF_HP_CTRL, BIT(15)); 777 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 778 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 779 780 wil_halt_cpu(wil); 781 782 if (!no_flash) { 783 /* clear all boot loader "ready" bits */ 784 wil_w(wil, RGF_USER_BL + 785 offsetof(struct bl_dedicated_registers_v0, 786 boot_loader_ready), 0); 787 /* this should be safe to write even with old BLs */ 788 wil_w(wil, RGF_USER_BL + 789 offsetof(struct bl_dedicated_registers_v1, 790 bl_shutdown_handshake), 0); 791 } 792 /* Clear Fw Download notification */ 793 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 794 795 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 796 /* XTAL stabilization should take about 3ms */ 797 usleep_range(5000, 7000); 798 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 799 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 800 wil_err(wil, "Xtal stabilization timeout\n" 801 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 802 return -ETIME; 803 } 804 /* switch 10k to XTAL*/ 805 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 806 /* 40 MHz */ 807 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 808 809 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 810 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 811 812 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 813 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 814 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 815 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 816 817 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 818 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 819 820 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 821 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 822 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 823 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 824 825 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 826 /* reset A2 PCIE AHB */ 827 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 828 829 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 830 831 /* wait until device ready. typical time is 20..80 msec */ 832 if (no_flash) 833 do { 834 msleep(RST_DELAY); 835 x = wil_r(wil, USER_EXT_USER_PMU_3); 836 if (delay++ > RST_COUNT) { 837 wil_err(wil, "Reset not completed, PMU_3 0x%08x\n", 838 x); 839 return -ETIME; 840 } 841 } while ((x & BIT_PMU_DEVICE_RDY) == 0); 842 else 843 do { 844 msleep(RST_DELAY); 845 x = wil_r(wil, RGF_USER_BL + 846 offsetof(struct bl_dedicated_registers_v0, 847 boot_loader_ready)); 848 if (x1 != x) { 849 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", 850 x1, x); 851 x1 = x; 852 } 853 if (delay++ > RST_COUNT) { 854 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 855 x); 856 return -ETIME; 857 } 858 } while (x != BL_READY); 859 860 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 861 862 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 863 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 864 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 865 866 if (no_flash) { 867 /* Reset OTP HW vectors to fit 40MHz */ 868 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME1, 0x60001); 869 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME2, 0x20027); 870 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME3, 0x1); 871 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME4, 0x20027); 872 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME5, 0x30003); 873 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME6, 0x20002); 874 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME7, 0x60001); 875 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME8, 0x60001); 876 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME9, 0x60001); 877 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME10, 0x60001); 878 wil_w(wil, RGF_USER_XPM_RD_DOUT_SAMPLE_TIME, 0x57); 879 } 880 881 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 882 return 0; 883 } 884 885 static void wil_collect_fw_info(struct wil6210_priv *wil) 886 { 887 struct wiphy *wiphy = wil_to_wiphy(wil); 888 u8 retry_short; 889 int rc; 890 891 wil_refresh_fw_capabilities(wil); 892 893 rc = wmi_get_mgmt_retry(wil, &retry_short); 894 if (!rc) { 895 wiphy->retry_short = retry_short; 896 wil_dbg_misc(wil, "FW retry_short: %d\n", retry_short); 897 } 898 } 899 900 void wil_refresh_fw_capabilities(struct wil6210_priv *wil) 901 { 902 struct wiphy *wiphy = wil_to_wiphy(wil); 903 int features; 904 905 wil->keep_radio_on_during_sleep = 906 test_bit(WIL_PLATFORM_CAPA_RADIO_ON_IN_SUSPEND, 907 wil->platform_capa) && 908 test_bit(WMI_FW_CAPABILITY_D3_SUSPEND, wil->fw_capabilities); 909 910 wil_info(wil, "keep_radio_on_during_sleep (%d)\n", 911 wil->keep_radio_on_during_sleep); 912 913 if (test_bit(WMI_FW_CAPABILITY_RSSI_REPORTING, wil->fw_capabilities)) 914 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 915 else 916 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; 917 918 if (test_bit(WMI_FW_CAPABILITY_PNO, wil->fw_capabilities)) { 919 wiphy->max_sched_scan_reqs = 1; 920 wiphy->max_sched_scan_ssids = WMI_MAX_PNO_SSID_NUM; 921 wiphy->max_match_sets = WMI_MAX_PNO_SSID_NUM; 922 wiphy->max_sched_scan_ie_len = WMI_MAX_IE_LEN; 923 wiphy->max_sched_scan_plans = WMI_MAX_PLANS_NUM; 924 } 925 926 if (wil->platform_ops.set_features) { 927 features = (test_bit(WMI_FW_CAPABILITY_REF_CLOCK_CONTROL, 928 wil->fw_capabilities) && 929 test_bit(WIL_PLATFORM_CAPA_EXT_CLK, 930 wil->platform_capa)) ? 931 BIT(WIL_PLATFORM_FEATURE_FW_EXT_CLK_CONTROL) : 0; 932 933 wil->platform_ops.set_features(wil->platform_handle, features); 934 } 935 } 936 937 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 938 { 939 le32_to_cpus(&r->base); 940 le16_to_cpus(&r->entry_size); 941 le16_to_cpus(&r->size); 942 le32_to_cpus(&r->tail); 943 le32_to_cpus(&r->head); 944 } 945 946 static int wil_get_bl_info(struct wil6210_priv *wil) 947 { 948 struct net_device *ndev = wil->main_ndev; 949 struct wiphy *wiphy = wil_to_wiphy(wil); 950 union { 951 struct bl_dedicated_registers_v0 bl0; 952 struct bl_dedicated_registers_v1 bl1; 953 } bl; 954 u32 bl_ver; 955 u8 *mac; 956 u16 rf_status; 957 958 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 959 sizeof(bl)); 960 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 961 mac = bl.bl0.mac_address; 962 963 if (bl_ver == 0) { 964 le32_to_cpus(&bl.bl0.rf_type); 965 le32_to_cpus(&bl.bl0.baseband_type); 966 rf_status = 0; /* actually, unknown */ 967 wil_info(wil, 968 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 969 bl_ver, mac, 970 bl.bl0.rf_type, bl.bl0.baseband_type); 971 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 972 } else { 973 le16_to_cpus(&bl.bl1.rf_type); 974 rf_status = le16_to_cpu(bl.bl1.rf_status); 975 le32_to_cpus(&bl.bl1.baseband_type); 976 le16_to_cpus(&bl.bl1.bl_version_subminor); 977 le16_to_cpus(&bl.bl1.bl_version_build); 978 wil_info(wil, 979 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 980 bl_ver, mac, 981 bl.bl1.rf_type, rf_status, 982 bl.bl1.baseband_type); 983 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 984 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 985 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 986 } 987 988 if (!is_valid_ether_addr(mac)) { 989 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 990 return -EINVAL; 991 } 992 993 ether_addr_copy(ndev->perm_addr, mac); 994 ether_addr_copy(wiphy->perm_addr, mac); 995 if (!is_valid_ether_addr(ndev->dev_addr)) 996 ether_addr_copy(ndev->dev_addr, mac); 997 998 if (rf_status) {/* bad RF cable? */ 999 wil_err(wil, "RF communication error 0x%04x", 1000 rf_status); 1001 return -EAGAIN; 1002 } 1003 1004 return 0; 1005 } 1006 1007 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 1008 { 1009 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 1010 u32 bl_ver = wil_r(wil, RGF_USER_BL + 1011 offsetof(struct bl_dedicated_registers_v0, 1012 boot_loader_struct_version)); 1013 1014 if (bl_ver < 2) 1015 return; 1016 1017 bl_assert_code = wil_r(wil, RGF_USER_BL + 1018 offsetof(struct bl_dedicated_registers_v1, 1019 bl_assert_code)); 1020 bl_assert_blink = wil_r(wil, RGF_USER_BL + 1021 offsetof(struct bl_dedicated_registers_v1, 1022 bl_assert_blink)); 1023 bl_magic_number = wil_r(wil, RGF_USER_BL + 1024 offsetof(struct bl_dedicated_registers_v1, 1025 bl_magic_number)); 1026 1027 if (is_err) { 1028 wil_err(wil, 1029 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 1030 bl_assert_code, bl_assert_blink, bl_magic_number); 1031 } else { 1032 wil_dbg_misc(wil, 1033 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 1034 bl_assert_code, bl_assert_blink, bl_magic_number); 1035 } 1036 } 1037 1038 static int wil_get_otp_info(struct wil6210_priv *wil) 1039 { 1040 struct net_device *ndev = wil->main_ndev; 1041 struct wiphy *wiphy = wil_to_wiphy(wil); 1042 u8 mac[8]; 1043 1044 wil_memcpy_fromio_32(mac, wil->csr + HOSTADDR(RGF_OTP_MAC), 1045 sizeof(mac)); 1046 if (!is_valid_ether_addr(mac)) { 1047 wil_err(wil, "Invalid MAC %pM\n", mac); 1048 return -EINVAL; 1049 } 1050 1051 ether_addr_copy(ndev->perm_addr, mac); 1052 ether_addr_copy(wiphy->perm_addr, mac); 1053 if (!is_valid_ether_addr(ndev->dev_addr)) 1054 ether_addr_copy(ndev->dev_addr, mac); 1055 1056 return 0; 1057 } 1058 1059 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 1060 { 1061 ulong to = msecs_to_jiffies(1000); 1062 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 1063 1064 if (0 == left) { 1065 wil_err(wil, "Firmware not ready\n"); 1066 return -ETIME; 1067 } else { 1068 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 1069 jiffies_to_msecs(to-left), wil->hw_version); 1070 } 1071 return 0; 1072 } 1073 1074 void wil_abort_scan(struct wil6210_vif *vif, bool sync) 1075 { 1076 struct wil6210_priv *wil = vif_to_wil(vif); 1077 int rc; 1078 struct cfg80211_scan_info info = { 1079 .aborted = true, 1080 }; 1081 1082 lockdep_assert_held(&wil->vif_mutex); 1083 1084 if (!vif->scan_request) 1085 return; 1086 1087 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", vif->scan_request); 1088 del_timer_sync(&vif->scan_timer); 1089 mutex_unlock(&wil->vif_mutex); 1090 rc = wmi_abort_scan(vif); 1091 if (!rc && sync) 1092 wait_event_interruptible_timeout(wil->wq, !vif->scan_request, 1093 msecs_to_jiffies( 1094 WAIT_FOR_SCAN_ABORT_MS)); 1095 1096 mutex_lock(&wil->vif_mutex); 1097 if (vif->scan_request) { 1098 cfg80211_scan_done(vif->scan_request, &info); 1099 vif->scan_request = NULL; 1100 } 1101 } 1102 1103 void wil_abort_scan_all_vifs(struct wil6210_priv *wil, bool sync) 1104 { 1105 int i; 1106 1107 lockdep_assert_held(&wil->vif_mutex); 1108 1109 for (i = 0; i < wil->max_vifs; i++) { 1110 struct wil6210_vif *vif = wil->vifs[i]; 1111 1112 if (vif) 1113 wil_abort_scan(vif, sync); 1114 } 1115 } 1116 1117 int wil_ps_update(struct wil6210_priv *wil, enum wmi_ps_profile_type ps_profile) 1118 { 1119 int rc; 1120 1121 if (!test_bit(WMI_FW_CAPABILITY_PS_CONFIG, wil->fw_capabilities)) { 1122 wil_err(wil, "set_power_mgmt not supported\n"); 1123 return -EOPNOTSUPP; 1124 } 1125 1126 rc = wmi_ps_dev_profile_cfg(wil, ps_profile); 1127 if (rc) 1128 wil_err(wil, "wmi_ps_dev_profile_cfg failed (%d)\n", rc); 1129 else 1130 wil->ps_profile = ps_profile; 1131 1132 return rc; 1133 } 1134 1135 static void wil_pre_fw_config(struct wil6210_priv *wil) 1136 { 1137 /* Mark FW as loaded from host */ 1138 wil_s(wil, RGF_USER_USAGE_6, 1); 1139 1140 /* clear any interrupts which on-card-firmware 1141 * may have set 1142 */ 1143 wil6210_clear_irq(wil); 1144 /* CAF_ICR - clear and mask */ 1145 /* it is W1C, clear by writing back same value */ 1146 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 1147 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 1148 /* clear PAL_UNIT_ICR (potential D0->D3 leftover) */ 1149 wil_s(wil, RGF_PAL_UNIT_ICR + offsetof(struct RGF_ICR, ICR), 0); 1150 1151 if (wil->fw_calib_result > 0) { 1152 __le32 val = cpu_to_le32(wil->fw_calib_result | 1153 (CALIB_RESULT_SIGNATURE << 8)); 1154 wil_w(wil, RGF_USER_FW_CALIB_RESULT, (u32 __force)val); 1155 } 1156 } 1157 1158 static int wil_restore_vifs(struct wil6210_priv *wil) 1159 { 1160 struct wil6210_vif *vif; 1161 struct net_device *ndev; 1162 struct wireless_dev *wdev; 1163 int i, rc; 1164 1165 for (i = 0; i < wil->max_vifs; i++) { 1166 vif = wil->vifs[i]; 1167 if (!vif) 1168 continue; 1169 vif->ap_isolate = 0; 1170 if (vif->mid) { 1171 ndev = vif_to_ndev(vif); 1172 wdev = vif_to_wdev(vif); 1173 rc = wmi_port_allocate(wil, vif->mid, ndev->dev_addr, 1174 wdev->iftype); 1175 if (rc) { 1176 wil_err(wil, "fail to restore VIF %d type %d, rc %d\n", 1177 i, wdev->iftype, rc); 1178 return rc; 1179 } 1180 } 1181 } 1182 1183 return 0; 1184 } 1185 1186 /* 1187 * We reset all the structures, and we reset the UMAC. 1188 * After calling this routine, you're expected to reload 1189 * the firmware. 1190 */ 1191 int wil_reset(struct wil6210_priv *wil, bool load_fw) 1192 { 1193 int rc, i; 1194 unsigned long status_flags = BIT(wil_status_resetting); 1195 int no_flash; 1196 struct wil6210_vif *vif; 1197 1198 wil_dbg_misc(wil, "reset\n"); 1199 1200 WARN_ON(!mutex_is_locked(&wil->mutex)); 1201 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 1202 1203 if (debug_fw) { 1204 static const u8 mac[ETH_ALEN] = { 1205 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 1206 }; 1207 struct net_device *ndev = wil->main_ndev; 1208 1209 ether_addr_copy(ndev->perm_addr, mac); 1210 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 1211 return 0; 1212 } 1213 1214 if (wil->hw_version == HW_VER_UNKNOWN) 1215 return -ENODEV; 1216 1217 if (test_bit(WIL_PLATFORM_CAPA_T_PWR_ON_0, wil->platform_capa)) { 1218 wil_dbg_misc(wil, "Notify FW to set T_POWER_ON=0\n"); 1219 wil_s(wil, RGF_USER_USAGE_8, BIT_USER_SUPPORT_T_POWER_ON_0); 1220 } 1221 1222 if (test_bit(WIL_PLATFORM_CAPA_EXT_CLK, wil->platform_capa)) { 1223 wil_dbg_misc(wil, "Notify FW on ext clock configuration\n"); 1224 wil_s(wil, RGF_USER_USAGE_8, BIT_USER_EXT_CLK); 1225 } 1226 1227 if (wil->platform_ops.notify) { 1228 rc = wil->platform_ops.notify(wil->platform_handle, 1229 WIL_PLATFORM_EVT_PRE_RESET); 1230 if (rc) 1231 wil_err(wil, "PRE_RESET platform notify failed, rc %d\n", 1232 rc); 1233 } 1234 1235 set_bit(wil_status_resetting, wil->status); 1236 if (test_bit(wil_status_collecting_dumps, wil->status)) { 1237 /* Device collects crash dump, cancel the reset. 1238 * following crash dump collection, reset would take place. 1239 */ 1240 wil_dbg_misc(wil, "reject reset while collecting crash dump\n"); 1241 rc = -EBUSY; 1242 goto out; 1243 } 1244 1245 mutex_lock(&wil->vif_mutex); 1246 wil_abort_scan_all_vifs(wil, false); 1247 mutex_unlock(&wil->vif_mutex); 1248 1249 for (i = 0; i < wil->max_vifs; i++) { 1250 vif = wil->vifs[i]; 1251 if (vif) { 1252 cancel_work_sync(&vif->disconnect_worker); 1253 wil6210_disconnect(vif, NULL, 1254 WLAN_REASON_DEAUTH_LEAVING, false); 1255 } 1256 } 1257 wil_bcast_fini_all(wil); 1258 1259 /* Disable device led before reset*/ 1260 wmi_led_cfg(wil, false); 1261 1262 /* prevent NAPI from being scheduled and prevent wmi commands */ 1263 mutex_lock(&wil->wmi_mutex); 1264 if (test_bit(wil_status_suspending, wil->status)) 1265 status_flags |= BIT(wil_status_suspending); 1266 bitmap_and(wil->status, wil->status, &status_flags, 1267 wil_status_last); 1268 wil_dbg_misc(wil, "wil->status (0x%lx)\n", *wil->status); 1269 mutex_unlock(&wil->wmi_mutex); 1270 1271 wil_mask_irq(wil); 1272 1273 wmi_event_flush(wil); 1274 1275 flush_workqueue(wil->wq_service); 1276 flush_workqueue(wil->wmi_wq); 1277 1278 no_flash = test_bit(hw_capa_no_flash, wil->hw_capa); 1279 if (!no_flash) 1280 wil_bl_crash_info(wil, false); 1281 wil_disable_irq(wil); 1282 rc = wil_target_reset(wil, no_flash); 1283 wil6210_clear_irq(wil); 1284 wil_enable_irq(wil); 1285 wil_rx_fini(wil); 1286 if (rc) { 1287 if (!no_flash) 1288 wil_bl_crash_info(wil, true); 1289 goto out; 1290 } 1291 1292 if (no_flash) { 1293 rc = wil_get_otp_info(wil); 1294 } else { 1295 rc = wil_get_bl_info(wil); 1296 if (rc == -EAGAIN && !load_fw) 1297 /* ignore RF error if not going up */ 1298 rc = 0; 1299 } 1300 if (rc) 1301 goto out; 1302 1303 wil_set_oob_mode(wil, oob_mode); 1304 if (load_fw) { 1305 wil_info(wil, "Use firmware <%s> + board <%s>\n", 1306 wil->wil_fw_name, WIL_BOARD_FILE_NAME); 1307 1308 if (!no_flash) 1309 wil_bl_prepare_halt(wil); 1310 1311 wil_halt_cpu(wil); 1312 memset(wil->fw_version, 0, sizeof(wil->fw_version)); 1313 /* Loading f/w from the file */ 1314 rc = wil_request_firmware(wil, wil->wil_fw_name, true); 1315 if (rc) 1316 goto out; 1317 if (wil->brd_file_addr) 1318 rc = wil_request_board(wil, WIL_BOARD_FILE_NAME); 1319 else 1320 rc = wil_request_firmware(wil, 1321 WIL_BOARD_FILE_NAME, 1322 true); 1323 if (rc) 1324 goto out; 1325 1326 wil_pre_fw_config(wil); 1327 wil_release_cpu(wil); 1328 } 1329 1330 /* init after reset */ 1331 reinit_completion(&wil->wmi_ready); 1332 reinit_completion(&wil->wmi_call); 1333 reinit_completion(&wil->halp.comp); 1334 1335 clear_bit(wil_status_resetting, wil->status); 1336 1337 if (load_fw) { 1338 wil_configure_interrupt_moderation(wil); 1339 wil_unmask_irq(wil); 1340 1341 /* we just started MAC, wait for FW ready */ 1342 rc = wil_wait_for_fw_ready(wil); 1343 if (rc) 1344 return rc; 1345 1346 /* check FW is responsive */ 1347 rc = wmi_echo(wil); 1348 if (rc) { 1349 wil_err(wil, "wmi_echo failed, rc %d\n", rc); 1350 return rc; 1351 } 1352 1353 rc = wil_restore_vifs(wil); 1354 if (rc) { 1355 wil_err(wil, "failed to restore vifs, rc %d\n", rc); 1356 return rc; 1357 } 1358 1359 wil_collect_fw_info(wil); 1360 1361 if (wil->ps_profile != WMI_PS_PROFILE_TYPE_DEFAULT) 1362 wil_ps_update(wil, wil->ps_profile); 1363 1364 if (wil->platform_ops.notify) { 1365 rc = wil->platform_ops.notify(wil->platform_handle, 1366 WIL_PLATFORM_EVT_FW_RDY); 1367 if (rc) { 1368 wil_err(wil, "FW_RDY notify failed, rc %d\n", 1369 rc); 1370 rc = 0; 1371 } 1372 } 1373 } 1374 1375 return rc; 1376 1377 out: 1378 clear_bit(wil_status_resetting, wil->status); 1379 return rc; 1380 } 1381 1382 void wil_fw_error_recovery(struct wil6210_priv *wil) 1383 { 1384 wil_dbg_misc(wil, "starting fw error recovery\n"); 1385 1386 if (test_bit(wil_status_resetting, wil->status)) { 1387 wil_info(wil, "Reset already in progress\n"); 1388 return; 1389 } 1390 1391 wil->recovery_state = fw_recovery_pending; 1392 schedule_work(&wil->fw_error_worker); 1393 } 1394 1395 int __wil_up(struct wil6210_priv *wil) 1396 { 1397 struct net_device *ndev = wil->main_ndev; 1398 struct wireless_dev *wdev = ndev->ieee80211_ptr; 1399 int rc; 1400 1401 WARN_ON(!mutex_is_locked(&wil->mutex)); 1402 1403 rc = wil_reset(wil, true); 1404 if (rc) 1405 return rc; 1406 1407 /* Rx VRING. After MAC and beacon */ 1408 rc = wil_rx_init(wil, 1 << rx_ring_order); 1409 if (rc) 1410 return rc; 1411 1412 switch (wdev->iftype) { 1413 case NL80211_IFTYPE_STATION: 1414 wil_dbg_misc(wil, "type: STATION\n"); 1415 ndev->type = ARPHRD_ETHER; 1416 break; 1417 case NL80211_IFTYPE_AP: 1418 wil_dbg_misc(wil, "type: AP\n"); 1419 ndev->type = ARPHRD_ETHER; 1420 break; 1421 case NL80211_IFTYPE_P2P_CLIENT: 1422 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 1423 ndev->type = ARPHRD_ETHER; 1424 break; 1425 case NL80211_IFTYPE_P2P_GO: 1426 wil_dbg_misc(wil, "type: P2P_GO\n"); 1427 ndev->type = ARPHRD_ETHER; 1428 break; 1429 case NL80211_IFTYPE_MONITOR: 1430 wil_dbg_misc(wil, "type: Monitor\n"); 1431 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 1432 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 1433 break; 1434 default: 1435 return -EOPNOTSUPP; 1436 } 1437 1438 /* MAC address - pre-requisite for other commands */ 1439 wmi_set_mac_address(wil, ndev->dev_addr); 1440 1441 wil_dbg_misc(wil, "NAPI enable\n"); 1442 napi_enable(&wil->napi_rx); 1443 napi_enable(&wil->napi_tx); 1444 set_bit(wil_status_napi_en, wil->status); 1445 1446 wil6210_bus_request(wil, WIL_DEFAULT_BUS_REQUEST_KBPS); 1447 1448 return 0; 1449 } 1450 1451 int wil_up(struct wil6210_priv *wil) 1452 { 1453 int rc; 1454 1455 wil_dbg_misc(wil, "up\n"); 1456 1457 mutex_lock(&wil->mutex); 1458 rc = __wil_up(wil); 1459 mutex_unlock(&wil->mutex); 1460 1461 return rc; 1462 } 1463 1464 int __wil_down(struct wil6210_priv *wil) 1465 { 1466 WARN_ON(!mutex_is_locked(&wil->mutex)); 1467 1468 set_bit(wil_status_resetting, wil->status); 1469 1470 wil6210_bus_request(wil, 0); 1471 1472 wil_disable_irq(wil); 1473 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 1474 napi_disable(&wil->napi_rx); 1475 napi_disable(&wil->napi_tx); 1476 wil_dbg_misc(wil, "NAPI disable\n"); 1477 } 1478 wil_enable_irq(wil); 1479 1480 mutex_lock(&wil->vif_mutex); 1481 wil_p2p_stop_radio_operations(wil); 1482 wil_abort_scan_all_vifs(wil, false); 1483 mutex_unlock(&wil->vif_mutex); 1484 1485 return wil_reset(wil, false); 1486 } 1487 1488 int wil_down(struct wil6210_priv *wil) 1489 { 1490 int rc; 1491 1492 wil_dbg_misc(wil, "down\n"); 1493 1494 wil_set_recovery_state(wil, fw_recovery_idle); 1495 mutex_lock(&wil->mutex); 1496 rc = __wil_down(wil); 1497 mutex_unlock(&wil->mutex); 1498 1499 return rc; 1500 } 1501 1502 int wil_find_cid(struct wil6210_priv *wil, u8 mid, const u8 *mac) 1503 { 1504 int i; 1505 int rc = -ENOENT; 1506 1507 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1508 if (wil->sta[i].mid == mid && 1509 wil->sta[i].status != wil_sta_unused && 1510 ether_addr_equal(wil->sta[i].addr, mac)) { 1511 rc = i; 1512 break; 1513 } 1514 } 1515 1516 return rc; 1517 } 1518 1519 void wil_halp_vote(struct wil6210_priv *wil) 1520 { 1521 unsigned long rc; 1522 unsigned long to_jiffies = msecs_to_jiffies(WAIT_FOR_HALP_VOTE_MS); 1523 1524 mutex_lock(&wil->halp.lock); 1525 1526 wil_dbg_irq(wil, "halp_vote: start, HALP ref_cnt (%d)\n", 1527 wil->halp.ref_cnt); 1528 1529 if (++wil->halp.ref_cnt == 1) { 1530 reinit_completion(&wil->halp.comp); 1531 wil6210_set_halp(wil); 1532 rc = wait_for_completion_timeout(&wil->halp.comp, to_jiffies); 1533 if (!rc) { 1534 wil_err(wil, "HALP vote timed out\n"); 1535 /* Mask HALP as done in case the interrupt is raised */ 1536 wil6210_mask_halp(wil); 1537 } else { 1538 wil_dbg_irq(wil, 1539 "halp_vote: HALP vote completed after %d ms\n", 1540 jiffies_to_msecs(to_jiffies - rc)); 1541 } 1542 } 1543 1544 wil_dbg_irq(wil, "halp_vote: end, HALP ref_cnt (%d)\n", 1545 wil->halp.ref_cnt); 1546 1547 mutex_unlock(&wil->halp.lock); 1548 } 1549 1550 void wil_halp_unvote(struct wil6210_priv *wil) 1551 { 1552 WARN_ON(wil->halp.ref_cnt == 0); 1553 1554 mutex_lock(&wil->halp.lock); 1555 1556 wil_dbg_irq(wil, "halp_unvote: start, HALP ref_cnt (%d)\n", 1557 wil->halp.ref_cnt); 1558 1559 if (--wil->halp.ref_cnt == 0) { 1560 wil6210_clear_halp(wil); 1561 wil_dbg_irq(wil, "HALP unvote\n"); 1562 } 1563 1564 wil_dbg_irq(wil, "halp_unvote:end, HALP ref_cnt (%d)\n", 1565 wil->halp.ref_cnt); 1566 1567 mutex_unlock(&wil->halp.lock); 1568 } 1569