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 memset(&reply, 0, sizeof(reply)); 346 347 rc = wmi_call(wil, WMI_DISCONNECT_CMDID, vif->mid, NULL, 0, 348 WMI_DISCONNECT_EVENTID, &reply, sizeof(reply), 349 WIL6210_DISCONNECT_TO_MS); 350 if (rc) { 351 wil_err(wil, "disconnect error %d\n", rc); 352 return; 353 } 354 355 wil_update_net_queues_bh(wil, vif, NULL, true); 356 netif_carrier_off(ndev); 357 cfg80211_connect_result(ndev, NULL, NULL, 0, NULL, 0, 358 WLAN_STATUS_UNSPECIFIED_FAILURE, GFP_KERNEL); 359 clear_bit(wil_vif_fwconnecting, vif->status); 360 } 361 362 static int wil_wait_for_recovery(struct wil6210_priv *wil) 363 { 364 if (wait_event_interruptible(wil->wq, wil->recovery_state != 365 fw_recovery_pending)) { 366 wil_err(wil, "Interrupt, canceling recovery\n"); 367 return -ERESTARTSYS; 368 } 369 if (wil->recovery_state != fw_recovery_running) { 370 wil_info(wil, "Recovery cancelled\n"); 371 return -EINTR; 372 } 373 wil_info(wil, "Proceed with recovery\n"); 374 return 0; 375 } 376 377 void wil_set_recovery_state(struct wil6210_priv *wil, int state) 378 { 379 wil_dbg_misc(wil, "set_recovery_state: %d -> %d\n", 380 wil->recovery_state, state); 381 382 wil->recovery_state = state; 383 wake_up_interruptible(&wil->wq); 384 } 385 386 bool wil_is_recovery_blocked(struct wil6210_priv *wil) 387 { 388 return no_fw_recovery && (wil->recovery_state == fw_recovery_pending); 389 } 390 391 static void wil_fw_error_worker(struct work_struct *work) 392 { 393 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 394 fw_error_worker); 395 struct net_device *ndev = wil->main_ndev; 396 struct wireless_dev *wdev; 397 398 wil_dbg_misc(wil, "fw error worker\n"); 399 400 if (!ndev || !(ndev->flags & IFF_UP)) { 401 wil_info(wil, "No recovery - interface is down\n"); 402 return; 403 } 404 wdev = ndev->ieee80211_ptr; 405 406 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 407 * passed since last recovery attempt 408 */ 409 if (time_is_after_jiffies(wil->last_fw_recovery + 410 WIL6210_FW_RECOVERY_TO)) 411 wil->recovery_count++; 412 else 413 wil->recovery_count = 1; /* fw was alive for a long time */ 414 415 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 416 wil_err(wil, "too many recovery attempts (%d), giving up\n", 417 wil->recovery_count); 418 return; 419 } 420 421 wil->last_fw_recovery = jiffies; 422 423 wil_info(wil, "fw error recovery requested (try %d)...\n", 424 wil->recovery_count); 425 if (!no_fw_recovery) 426 wil->recovery_state = fw_recovery_running; 427 if (wil_wait_for_recovery(wil) != 0) 428 return; 429 430 mutex_lock(&wil->mutex); 431 /* Needs adaptation for multiple VIFs 432 * need to go over all VIFs and consider the appropriate 433 * recovery. 434 */ 435 switch (wdev->iftype) { 436 case NL80211_IFTYPE_STATION: 437 case NL80211_IFTYPE_P2P_CLIENT: 438 case NL80211_IFTYPE_MONITOR: 439 /* silent recovery, upper layers will see disconnect */ 440 __wil_down(wil); 441 __wil_up(wil); 442 break; 443 case NL80211_IFTYPE_AP: 444 case NL80211_IFTYPE_P2P_GO: 445 wil_info(wil, "No recovery for AP-like interface\n"); 446 /* recovery in these modes is done by upper layers */ 447 break; 448 default: 449 wil_err(wil, "No recovery - unknown interface type %d\n", 450 wdev->iftype); 451 break; 452 } 453 mutex_unlock(&wil->mutex); 454 } 455 456 static int wil_find_free_vring(struct wil6210_priv *wil) 457 { 458 int i; 459 460 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 461 if (!wil->vring_tx[i].va) 462 return i; 463 } 464 return -EINVAL; 465 } 466 467 int wil_tx_init(struct wil6210_vif *vif, int cid) 468 { 469 struct wil6210_priv *wil = vif_to_wil(vif); 470 int rc = -EINVAL, ringid; 471 472 if (cid < 0) { 473 wil_err(wil, "No connection pending\n"); 474 goto out; 475 } 476 ringid = wil_find_free_vring(wil); 477 if (ringid < 0) { 478 wil_err(wil, "No free vring found\n"); 479 goto out; 480 } 481 482 wil_dbg_wmi(wil, "Configure for connection CID %d MID %d vring %d\n", 483 cid, vif->mid, ringid); 484 485 rc = wil_vring_init_tx(vif, ringid, 1 << tx_ring_order, cid, 0); 486 if (rc) 487 wil_err(wil, "init TX for CID %d MID %d vring %d failed\n", 488 cid, vif->mid, ringid); 489 490 out: 491 return rc; 492 } 493 494 int wil_bcast_init(struct wil6210_vif *vif) 495 { 496 struct wil6210_priv *wil = vif_to_wil(vif); 497 int ri = vif->bcast_vring, rc; 498 499 if ((ri >= 0) && wil->vring_tx[ri].va) 500 return 0; 501 502 ri = wil_find_free_vring(wil); 503 if (ri < 0) 504 return ri; 505 506 vif->bcast_vring = ri; 507 rc = wil_vring_init_bcast(vif, ri, 1 << bcast_ring_order); 508 if (rc) 509 vif->bcast_vring = -1; 510 511 return rc; 512 } 513 514 void wil_bcast_fini(struct wil6210_vif *vif) 515 { 516 struct wil6210_priv *wil = vif_to_wil(vif); 517 int ri = vif->bcast_vring; 518 519 if (ri < 0) 520 return; 521 522 vif->bcast_vring = -1; 523 wil_vring_fini_tx(wil, ri); 524 } 525 526 void wil_bcast_fini_all(struct wil6210_priv *wil) 527 { 528 int i; 529 struct wil6210_vif *vif; 530 531 for (i = 0; i < wil->max_vifs; i++) { 532 vif = wil->vifs[i]; 533 if (vif) 534 wil_bcast_fini(vif); 535 } 536 } 537 538 int wil_priv_init(struct wil6210_priv *wil) 539 { 540 uint i; 541 542 wil_dbg_misc(wil, "priv_init\n"); 543 544 memset(wil->sta, 0, sizeof(wil->sta)); 545 for (i = 0; i < WIL6210_MAX_CID; i++) { 546 spin_lock_init(&wil->sta[i].tid_rx_lock); 547 wil->sta[i].mid = U8_MAX; 548 } 549 550 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) 551 spin_lock_init(&wil->vring_tx_data[i].lock); 552 553 mutex_init(&wil->mutex); 554 mutex_init(&wil->vif_mutex); 555 mutex_init(&wil->wmi_mutex); 556 mutex_init(&wil->halp.lock); 557 558 init_completion(&wil->wmi_ready); 559 init_completion(&wil->wmi_call); 560 init_completion(&wil->halp.comp); 561 562 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 563 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 564 565 INIT_LIST_HEAD(&wil->pending_wmi_ev); 566 spin_lock_init(&wil->wmi_ev_lock); 567 spin_lock_init(&wil->net_queue_lock); 568 init_waitqueue_head(&wil->wq); 569 570 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 571 if (!wil->wmi_wq) 572 return -EAGAIN; 573 574 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 575 if (!wil->wq_service) 576 goto out_wmi_wq; 577 578 wil->last_fw_recovery = jiffies; 579 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 580 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 581 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 582 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 583 584 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 585 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 586 587 wil->ps_profile = WMI_PS_PROFILE_TYPE_DEFAULT; 588 589 wil->wakeup_trigger = WMI_WAKEUP_TRIGGER_UCAST | 590 WMI_WAKEUP_TRIGGER_BCAST; 591 memset(&wil->suspend_stats, 0, sizeof(wil->suspend_stats)); 592 wil->vring_idle_trsh = 16; 593 594 wil->reply_mid = U8_MAX; 595 wil->max_vifs = 1; 596 597 return 0; 598 599 out_wmi_wq: 600 destroy_workqueue(wil->wmi_wq); 601 602 return -EAGAIN; 603 } 604 605 void wil6210_bus_request(struct wil6210_priv *wil, u32 kbps) 606 { 607 if (wil->platform_ops.bus_request) { 608 wil->bus_request_kbps = kbps; 609 wil->platform_ops.bus_request(wil->platform_handle, kbps); 610 } 611 } 612 613 /** 614 * wil6210_disconnect - disconnect one connection 615 * @vif: virtual interface context 616 * @bssid: peer to disconnect, NULL to disconnect all 617 * @reason_code: Reason code for the Disassociation frame 618 * @from_event: whether is invoked from FW event handler 619 * 620 * Disconnect and release associated resources. If invoked not from the 621 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 622 */ 623 void wil6210_disconnect(struct wil6210_vif *vif, const u8 *bssid, 624 u16 reason_code, bool from_event) 625 { 626 struct wil6210_priv *wil = vif_to_wil(vif); 627 628 wil_dbg_misc(wil, "disconnect\n"); 629 630 del_timer_sync(&vif->connect_timer); 631 _wil6210_disconnect(vif, bssid, reason_code, from_event); 632 } 633 634 void wil_priv_deinit(struct wil6210_priv *wil) 635 { 636 wil_dbg_misc(wil, "priv_deinit\n"); 637 638 wil_set_recovery_state(wil, fw_recovery_idle); 639 cancel_work_sync(&wil->fw_error_worker); 640 wmi_event_flush(wil); 641 destroy_workqueue(wil->wq_service); 642 destroy_workqueue(wil->wmi_wq); 643 } 644 645 static void wil_shutdown_bl(struct wil6210_priv *wil) 646 { 647 u32 val; 648 649 wil_s(wil, RGF_USER_BL + 650 offsetof(struct bl_dedicated_registers_v1, 651 bl_shutdown_handshake), BL_SHUTDOWN_HS_GRTD); 652 653 usleep_range(100, 150); 654 655 val = wil_r(wil, RGF_USER_BL + 656 offsetof(struct bl_dedicated_registers_v1, 657 bl_shutdown_handshake)); 658 if (val & BL_SHUTDOWN_HS_RTD) { 659 wil_dbg_misc(wil, "BL is ready for halt\n"); 660 return; 661 } 662 663 wil_err(wil, "BL did not report ready for halt\n"); 664 } 665 666 /* this format is used by ARC embedded CPU for instruction memory */ 667 static inline u32 ARC_me_imm32(u32 d) 668 { 669 return ((d & 0xffff0000) >> 16) | ((d & 0x0000ffff) << 16); 670 } 671 672 /* defines access to interrupt vectors for wil_freeze_bl */ 673 #define ARC_IRQ_VECTOR_OFFSET(N) ((N) * 8) 674 /* ARC long jump instruction */ 675 #define ARC_JAL_INST (0x20200f80) 676 677 static void wil_freeze_bl(struct wil6210_priv *wil) 678 { 679 u32 jal, upc, saved; 680 u32 ivt3 = ARC_IRQ_VECTOR_OFFSET(3); 681 682 jal = wil_r(wil, wil->iccm_base + ivt3); 683 if (jal != ARC_me_imm32(ARC_JAL_INST)) { 684 wil_dbg_misc(wil, "invalid IVT entry found, skipping\n"); 685 return; 686 } 687 688 /* prevent the target from entering deep sleep 689 * and disabling memory access 690 */ 691 saved = wil_r(wil, RGF_USER_USAGE_8); 692 wil_w(wil, RGF_USER_USAGE_8, saved | BIT_USER_PREVENT_DEEP_SLEEP); 693 usleep_range(20, 25); /* let the BL process the bit */ 694 695 /* redirect to endless loop in the INT_L1 context and let it trap */ 696 wil_w(wil, wil->iccm_base + ivt3 + 4, ARC_me_imm32(ivt3)); 697 usleep_range(20, 25); /* let the BL get into the trap */ 698 699 /* verify the BL is frozen */ 700 upc = wil_r(wil, RGF_USER_CPU_PC); 701 if (upc < ivt3 || (upc > (ivt3 + 8))) 702 wil_dbg_misc(wil, "BL freeze failed, PC=0x%08X\n", upc); 703 704 wil_w(wil, RGF_USER_USAGE_8, saved); 705 } 706 707 static void wil_bl_prepare_halt(struct wil6210_priv *wil) 708 { 709 u32 tmp, ver; 710 711 /* before halting device CPU driver must make sure BL is not accessing 712 * host memory. This is done differently depending on BL version: 713 * 1. For very old BL versions the procedure is skipped 714 * (not supported). 715 * 2. For old BL version we use a special trick to freeze the BL 716 * 3. For new BL versions we shutdown the BL using handshake procedure. 717 */ 718 tmp = wil_r(wil, RGF_USER_BL + 719 offsetof(struct bl_dedicated_registers_v0, 720 boot_loader_struct_version)); 721 if (!tmp) { 722 wil_dbg_misc(wil, "old BL, skipping halt preparation\n"); 723 return; 724 } 725 726 tmp = wil_r(wil, RGF_USER_BL + 727 offsetof(struct bl_dedicated_registers_v1, 728 bl_shutdown_handshake)); 729 ver = BL_SHUTDOWN_HS_PROT_VER(tmp); 730 731 if (ver > 0) 732 wil_shutdown_bl(wil); 733 else 734 wil_freeze_bl(wil); 735 } 736 737 static inline void wil_halt_cpu(struct wil6210_priv *wil) 738 { 739 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 740 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 741 } 742 743 static inline void wil_release_cpu(struct wil6210_priv *wil) 744 { 745 /* Start CPU */ 746 wil_w(wil, RGF_USER_USER_CPU_0, 1); 747 } 748 749 static void wil_set_oob_mode(struct wil6210_priv *wil, u8 mode) 750 { 751 wil_info(wil, "oob_mode to %d\n", mode); 752 switch (mode) { 753 case 0: 754 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE | 755 BIT_USER_OOB_R2_MODE); 756 break; 757 case 1: 758 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 759 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 760 break; 761 case 2: 762 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 763 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE); 764 break; 765 default: 766 wil_err(wil, "invalid oob_mode: %d\n", mode); 767 } 768 } 769 770 static int wil_target_reset(struct wil6210_priv *wil, int no_flash) 771 { 772 int delay = 0; 773 u32 x, x1 = 0; 774 775 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 776 777 /* Clear MAC link up */ 778 wil_s(wil, RGF_HP_CTRL, BIT(15)); 779 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 780 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 781 782 wil_halt_cpu(wil); 783 784 if (!no_flash) { 785 /* clear all boot loader "ready" bits */ 786 wil_w(wil, RGF_USER_BL + 787 offsetof(struct bl_dedicated_registers_v0, 788 boot_loader_ready), 0); 789 /* this should be safe to write even with old BLs */ 790 wil_w(wil, RGF_USER_BL + 791 offsetof(struct bl_dedicated_registers_v1, 792 bl_shutdown_handshake), 0); 793 } 794 /* Clear Fw Download notification */ 795 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 796 797 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 798 /* XTAL stabilization should take about 3ms */ 799 usleep_range(5000, 7000); 800 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 801 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 802 wil_err(wil, "Xtal stabilization timeout\n" 803 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 804 return -ETIME; 805 } 806 /* switch 10k to XTAL*/ 807 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 808 /* 40 MHz */ 809 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 810 811 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 812 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 813 814 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 815 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 816 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 817 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 818 819 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 820 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 821 822 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 823 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 824 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 825 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 826 827 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 828 /* reset A2 PCIE AHB */ 829 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 830 831 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 832 833 /* wait until device ready. typical time is 20..80 msec */ 834 if (no_flash) 835 do { 836 msleep(RST_DELAY); 837 x = wil_r(wil, USER_EXT_USER_PMU_3); 838 if (delay++ > RST_COUNT) { 839 wil_err(wil, "Reset not completed, PMU_3 0x%08x\n", 840 x); 841 return -ETIME; 842 } 843 } while ((x & BIT_PMU_DEVICE_RDY) == 0); 844 else 845 do { 846 msleep(RST_DELAY); 847 x = wil_r(wil, RGF_USER_BL + 848 offsetof(struct bl_dedicated_registers_v0, 849 boot_loader_ready)); 850 if (x1 != x) { 851 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", 852 x1, x); 853 x1 = x; 854 } 855 if (delay++ > RST_COUNT) { 856 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 857 x); 858 return -ETIME; 859 } 860 } while (x != BL_READY); 861 862 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 863 864 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 865 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 866 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 867 868 if (no_flash) { 869 /* Reset OTP HW vectors to fit 40MHz */ 870 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME1, 0x60001); 871 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME2, 0x20027); 872 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME3, 0x1); 873 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME4, 0x20027); 874 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME5, 0x30003); 875 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME6, 0x20002); 876 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME7, 0x60001); 877 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME8, 0x60001); 878 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME9, 0x60001); 879 wil_w(wil, RGF_USER_XPM_IFC_RD_TIME10, 0x60001); 880 wil_w(wil, RGF_USER_XPM_RD_DOUT_SAMPLE_TIME, 0x57); 881 } 882 883 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 884 return 0; 885 } 886 887 static void wil_collect_fw_info(struct wil6210_priv *wil) 888 { 889 struct wiphy *wiphy = wil_to_wiphy(wil); 890 u8 retry_short; 891 int rc; 892 893 wil_refresh_fw_capabilities(wil); 894 895 rc = wmi_get_mgmt_retry(wil, &retry_short); 896 if (!rc) { 897 wiphy->retry_short = retry_short; 898 wil_dbg_misc(wil, "FW retry_short: %d\n", retry_short); 899 } 900 } 901 902 void wil_refresh_fw_capabilities(struct wil6210_priv *wil) 903 { 904 struct wiphy *wiphy = wil_to_wiphy(wil); 905 int features; 906 907 wil->keep_radio_on_during_sleep = 908 test_bit(WIL_PLATFORM_CAPA_RADIO_ON_IN_SUSPEND, 909 wil->platform_capa) && 910 test_bit(WMI_FW_CAPABILITY_D3_SUSPEND, wil->fw_capabilities); 911 912 wil_info(wil, "keep_radio_on_during_sleep (%d)\n", 913 wil->keep_radio_on_during_sleep); 914 915 if (test_bit(WMI_FW_CAPABILITY_RSSI_REPORTING, wil->fw_capabilities)) 916 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 917 else 918 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; 919 920 if (test_bit(WMI_FW_CAPABILITY_PNO, wil->fw_capabilities)) { 921 wiphy->max_sched_scan_reqs = 1; 922 wiphy->max_sched_scan_ssids = WMI_MAX_PNO_SSID_NUM; 923 wiphy->max_match_sets = WMI_MAX_PNO_SSID_NUM; 924 wiphy->max_sched_scan_ie_len = WMI_MAX_IE_LEN; 925 wiphy->max_sched_scan_plans = WMI_MAX_PLANS_NUM; 926 } 927 928 if (wil->platform_ops.set_features) { 929 features = (test_bit(WMI_FW_CAPABILITY_REF_CLOCK_CONTROL, 930 wil->fw_capabilities) && 931 test_bit(WIL_PLATFORM_CAPA_EXT_CLK, 932 wil->platform_capa)) ? 933 BIT(WIL_PLATFORM_FEATURE_FW_EXT_CLK_CONTROL) : 0; 934 935 wil->platform_ops.set_features(wil->platform_handle, features); 936 } 937 } 938 939 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 940 { 941 le32_to_cpus(&r->base); 942 le16_to_cpus(&r->entry_size); 943 le16_to_cpus(&r->size); 944 le32_to_cpus(&r->tail); 945 le32_to_cpus(&r->head); 946 } 947 948 static int wil_get_bl_info(struct wil6210_priv *wil) 949 { 950 struct net_device *ndev = wil->main_ndev; 951 struct wiphy *wiphy = wil_to_wiphy(wil); 952 union { 953 struct bl_dedicated_registers_v0 bl0; 954 struct bl_dedicated_registers_v1 bl1; 955 } bl; 956 u32 bl_ver; 957 u8 *mac; 958 u16 rf_status; 959 960 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 961 sizeof(bl)); 962 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 963 mac = bl.bl0.mac_address; 964 965 if (bl_ver == 0) { 966 le32_to_cpus(&bl.bl0.rf_type); 967 le32_to_cpus(&bl.bl0.baseband_type); 968 rf_status = 0; /* actually, unknown */ 969 wil_info(wil, 970 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 971 bl_ver, mac, 972 bl.bl0.rf_type, bl.bl0.baseband_type); 973 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 974 } else { 975 le16_to_cpus(&bl.bl1.rf_type); 976 rf_status = le16_to_cpu(bl.bl1.rf_status); 977 le32_to_cpus(&bl.bl1.baseband_type); 978 le16_to_cpus(&bl.bl1.bl_version_subminor); 979 le16_to_cpus(&bl.bl1.bl_version_build); 980 wil_info(wil, 981 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 982 bl_ver, mac, 983 bl.bl1.rf_type, rf_status, 984 bl.bl1.baseband_type); 985 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 986 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 987 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 988 } 989 990 if (!is_valid_ether_addr(mac)) { 991 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 992 return -EINVAL; 993 } 994 995 ether_addr_copy(ndev->perm_addr, mac); 996 ether_addr_copy(wiphy->perm_addr, mac); 997 if (!is_valid_ether_addr(ndev->dev_addr)) 998 ether_addr_copy(ndev->dev_addr, mac); 999 1000 if (rf_status) {/* bad RF cable? */ 1001 wil_err(wil, "RF communication error 0x%04x", 1002 rf_status); 1003 return -EAGAIN; 1004 } 1005 1006 return 0; 1007 } 1008 1009 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 1010 { 1011 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 1012 u32 bl_ver = wil_r(wil, RGF_USER_BL + 1013 offsetof(struct bl_dedicated_registers_v0, 1014 boot_loader_struct_version)); 1015 1016 if (bl_ver < 2) 1017 return; 1018 1019 bl_assert_code = wil_r(wil, RGF_USER_BL + 1020 offsetof(struct bl_dedicated_registers_v1, 1021 bl_assert_code)); 1022 bl_assert_blink = wil_r(wil, RGF_USER_BL + 1023 offsetof(struct bl_dedicated_registers_v1, 1024 bl_assert_blink)); 1025 bl_magic_number = wil_r(wil, RGF_USER_BL + 1026 offsetof(struct bl_dedicated_registers_v1, 1027 bl_magic_number)); 1028 1029 if (is_err) { 1030 wil_err(wil, 1031 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 1032 bl_assert_code, bl_assert_blink, bl_magic_number); 1033 } else { 1034 wil_dbg_misc(wil, 1035 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 1036 bl_assert_code, bl_assert_blink, bl_magic_number); 1037 } 1038 } 1039 1040 static int wil_get_otp_info(struct wil6210_priv *wil) 1041 { 1042 struct net_device *ndev = wil->main_ndev; 1043 struct wiphy *wiphy = wil_to_wiphy(wil); 1044 u8 mac[8]; 1045 1046 wil_memcpy_fromio_32(mac, wil->csr + HOSTADDR(RGF_OTP_MAC), 1047 sizeof(mac)); 1048 if (!is_valid_ether_addr(mac)) { 1049 wil_err(wil, "Invalid MAC %pM\n", mac); 1050 return -EINVAL; 1051 } 1052 1053 ether_addr_copy(ndev->perm_addr, mac); 1054 ether_addr_copy(wiphy->perm_addr, mac); 1055 if (!is_valid_ether_addr(ndev->dev_addr)) 1056 ether_addr_copy(ndev->dev_addr, mac); 1057 1058 return 0; 1059 } 1060 1061 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 1062 { 1063 ulong to = msecs_to_jiffies(1000); 1064 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 1065 1066 if (0 == left) { 1067 wil_err(wil, "Firmware not ready\n"); 1068 return -ETIME; 1069 } else { 1070 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 1071 jiffies_to_msecs(to-left), wil->hw_version); 1072 } 1073 return 0; 1074 } 1075 1076 void wil_abort_scan(struct wil6210_vif *vif, bool sync) 1077 { 1078 struct wil6210_priv *wil = vif_to_wil(vif); 1079 int rc; 1080 struct cfg80211_scan_info info = { 1081 .aborted = true, 1082 }; 1083 1084 lockdep_assert_held(&wil->vif_mutex); 1085 1086 if (!vif->scan_request) 1087 return; 1088 1089 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", vif->scan_request); 1090 del_timer_sync(&vif->scan_timer); 1091 mutex_unlock(&wil->vif_mutex); 1092 rc = wmi_abort_scan(vif); 1093 if (!rc && sync) 1094 wait_event_interruptible_timeout(wil->wq, !vif->scan_request, 1095 msecs_to_jiffies( 1096 WAIT_FOR_SCAN_ABORT_MS)); 1097 1098 mutex_lock(&wil->vif_mutex); 1099 if (vif->scan_request) { 1100 cfg80211_scan_done(vif->scan_request, &info); 1101 vif->scan_request = NULL; 1102 } 1103 } 1104 1105 void wil_abort_scan_all_vifs(struct wil6210_priv *wil, bool sync) 1106 { 1107 int i; 1108 1109 lockdep_assert_held(&wil->vif_mutex); 1110 1111 for (i = 0; i < wil->max_vifs; i++) { 1112 struct wil6210_vif *vif = wil->vifs[i]; 1113 1114 if (vif) 1115 wil_abort_scan(vif, sync); 1116 } 1117 } 1118 1119 int wil_ps_update(struct wil6210_priv *wil, enum wmi_ps_profile_type ps_profile) 1120 { 1121 int rc; 1122 1123 if (!test_bit(WMI_FW_CAPABILITY_PS_CONFIG, wil->fw_capabilities)) { 1124 wil_err(wil, "set_power_mgmt not supported\n"); 1125 return -EOPNOTSUPP; 1126 } 1127 1128 rc = wmi_ps_dev_profile_cfg(wil, ps_profile); 1129 if (rc) 1130 wil_err(wil, "wmi_ps_dev_profile_cfg failed (%d)\n", rc); 1131 else 1132 wil->ps_profile = ps_profile; 1133 1134 return rc; 1135 } 1136 1137 static void wil_pre_fw_config(struct wil6210_priv *wil) 1138 { 1139 /* Mark FW as loaded from host */ 1140 wil_s(wil, RGF_USER_USAGE_6, 1); 1141 1142 /* clear any interrupts which on-card-firmware 1143 * may have set 1144 */ 1145 wil6210_clear_irq(wil); 1146 /* CAF_ICR - clear and mask */ 1147 /* it is W1C, clear by writing back same value */ 1148 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 1149 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 1150 /* clear PAL_UNIT_ICR (potential D0->D3 leftover) */ 1151 wil_s(wil, RGF_PAL_UNIT_ICR + offsetof(struct RGF_ICR, ICR), 0); 1152 1153 if (wil->fw_calib_result > 0) { 1154 __le32 val = cpu_to_le32(wil->fw_calib_result | 1155 (CALIB_RESULT_SIGNATURE << 8)); 1156 wil_w(wil, RGF_USER_FW_CALIB_RESULT, (u32 __force)val); 1157 } 1158 } 1159 1160 static int wil_restore_vifs(struct wil6210_priv *wil) 1161 { 1162 struct wil6210_vif *vif; 1163 struct net_device *ndev; 1164 struct wireless_dev *wdev; 1165 int i, rc; 1166 1167 for (i = 0; i < wil->max_vifs; i++) { 1168 vif = wil->vifs[i]; 1169 if (!vif) 1170 continue; 1171 vif->ap_isolate = 0; 1172 if (vif->mid) { 1173 ndev = vif_to_ndev(vif); 1174 wdev = vif_to_wdev(vif); 1175 rc = wmi_port_allocate(wil, vif->mid, ndev->dev_addr, 1176 wdev->iftype); 1177 if (rc) { 1178 wil_err(wil, "fail to restore VIF %d type %d, rc %d\n", 1179 i, wdev->iftype, rc); 1180 return rc; 1181 } 1182 } 1183 } 1184 1185 return 0; 1186 } 1187 1188 /* 1189 * We reset all the structures, and we reset the UMAC. 1190 * After calling this routine, you're expected to reload 1191 * the firmware. 1192 */ 1193 int wil_reset(struct wil6210_priv *wil, bool load_fw) 1194 { 1195 int rc, i; 1196 unsigned long status_flags = BIT(wil_status_resetting); 1197 int no_flash; 1198 struct wil6210_vif *vif; 1199 1200 wil_dbg_misc(wil, "reset\n"); 1201 1202 WARN_ON(!mutex_is_locked(&wil->mutex)); 1203 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 1204 1205 if (debug_fw) { 1206 static const u8 mac[ETH_ALEN] = { 1207 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 1208 }; 1209 struct net_device *ndev = wil->main_ndev; 1210 1211 ether_addr_copy(ndev->perm_addr, mac); 1212 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 1213 return 0; 1214 } 1215 1216 if (wil->hw_version == HW_VER_UNKNOWN) 1217 return -ENODEV; 1218 1219 if (test_bit(WIL_PLATFORM_CAPA_T_PWR_ON_0, wil->platform_capa)) { 1220 wil_dbg_misc(wil, "Notify FW to set T_POWER_ON=0\n"); 1221 wil_s(wil, RGF_USER_USAGE_8, BIT_USER_SUPPORT_T_POWER_ON_0); 1222 } 1223 1224 if (test_bit(WIL_PLATFORM_CAPA_EXT_CLK, wil->platform_capa)) { 1225 wil_dbg_misc(wil, "Notify FW on ext clock configuration\n"); 1226 wil_s(wil, RGF_USER_USAGE_8, BIT_USER_EXT_CLK); 1227 } 1228 1229 if (wil->platform_ops.notify) { 1230 rc = wil->platform_ops.notify(wil->platform_handle, 1231 WIL_PLATFORM_EVT_PRE_RESET); 1232 if (rc) 1233 wil_err(wil, "PRE_RESET platform notify failed, rc %d\n", 1234 rc); 1235 } 1236 1237 set_bit(wil_status_resetting, wil->status); 1238 if (test_bit(wil_status_collecting_dumps, wil->status)) { 1239 /* Device collects crash dump, cancel the reset. 1240 * following crash dump collection, reset would take place. 1241 */ 1242 wil_dbg_misc(wil, "reject reset while collecting crash dump\n"); 1243 rc = -EBUSY; 1244 goto out; 1245 } 1246 1247 mutex_lock(&wil->vif_mutex); 1248 wil_abort_scan_all_vifs(wil, false); 1249 mutex_unlock(&wil->vif_mutex); 1250 1251 for (i = 0; i < wil->max_vifs; i++) { 1252 vif = wil->vifs[i]; 1253 if (vif) { 1254 cancel_work_sync(&vif->disconnect_worker); 1255 wil6210_disconnect(vif, NULL, 1256 WLAN_REASON_DEAUTH_LEAVING, false); 1257 } 1258 } 1259 wil_bcast_fini_all(wil); 1260 1261 /* Disable device led before reset*/ 1262 wmi_led_cfg(wil, false); 1263 1264 /* prevent NAPI from being scheduled and prevent wmi commands */ 1265 mutex_lock(&wil->wmi_mutex); 1266 if (test_bit(wil_status_suspending, wil->status)) 1267 status_flags |= BIT(wil_status_suspending); 1268 bitmap_and(wil->status, wil->status, &status_flags, 1269 wil_status_last); 1270 wil_dbg_misc(wil, "wil->status (0x%lx)\n", *wil->status); 1271 mutex_unlock(&wil->wmi_mutex); 1272 1273 wil_mask_irq(wil); 1274 1275 wmi_event_flush(wil); 1276 1277 flush_workqueue(wil->wq_service); 1278 flush_workqueue(wil->wmi_wq); 1279 1280 no_flash = test_bit(hw_capa_no_flash, wil->hw_capa); 1281 if (!no_flash) 1282 wil_bl_crash_info(wil, false); 1283 wil_disable_irq(wil); 1284 rc = wil_target_reset(wil, no_flash); 1285 wil6210_clear_irq(wil); 1286 wil_enable_irq(wil); 1287 wil_rx_fini(wil); 1288 if (rc) { 1289 if (!no_flash) 1290 wil_bl_crash_info(wil, true); 1291 goto out; 1292 } 1293 1294 if (no_flash) { 1295 rc = wil_get_otp_info(wil); 1296 } else { 1297 rc = wil_get_bl_info(wil); 1298 if (rc == -EAGAIN && !load_fw) 1299 /* ignore RF error if not going up */ 1300 rc = 0; 1301 } 1302 if (rc) 1303 goto out; 1304 1305 wil_set_oob_mode(wil, oob_mode); 1306 if (load_fw) { 1307 wil_info(wil, "Use firmware <%s> + board <%s>\n", 1308 wil->wil_fw_name, WIL_BOARD_FILE_NAME); 1309 1310 if (!no_flash) 1311 wil_bl_prepare_halt(wil); 1312 1313 wil_halt_cpu(wil); 1314 memset(wil->fw_version, 0, sizeof(wil->fw_version)); 1315 /* Loading f/w from the file */ 1316 rc = wil_request_firmware(wil, wil->wil_fw_name, true); 1317 if (rc) 1318 goto out; 1319 if (wil->brd_file_addr) 1320 rc = wil_request_board(wil, WIL_BOARD_FILE_NAME); 1321 else 1322 rc = wil_request_firmware(wil, 1323 WIL_BOARD_FILE_NAME, 1324 true); 1325 if (rc) 1326 goto out; 1327 1328 wil_pre_fw_config(wil); 1329 wil_release_cpu(wil); 1330 } 1331 1332 /* init after reset */ 1333 reinit_completion(&wil->wmi_ready); 1334 reinit_completion(&wil->wmi_call); 1335 reinit_completion(&wil->halp.comp); 1336 1337 clear_bit(wil_status_resetting, wil->status); 1338 1339 if (load_fw) { 1340 wil_configure_interrupt_moderation(wil); 1341 wil_unmask_irq(wil); 1342 1343 /* we just started MAC, wait for FW ready */ 1344 rc = wil_wait_for_fw_ready(wil); 1345 if (rc) 1346 return rc; 1347 1348 /* check FW is responsive */ 1349 rc = wmi_echo(wil); 1350 if (rc) { 1351 wil_err(wil, "wmi_echo failed, rc %d\n", rc); 1352 return rc; 1353 } 1354 1355 rc = wil_restore_vifs(wil); 1356 if (rc) { 1357 wil_err(wil, "failed to restore vifs, rc %d\n", rc); 1358 return rc; 1359 } 1360 1361 wil_collect_fw_info(wil); 1362 1363 if (wil->ps_profile != WMI_PS_PROFILE_TYPE_DEFAULT) 1364 wil_ps_update(wil, wil->ps_profile); 1365 1366 if (wil->platform_ops.notify) { 1367 rc = wil->platform_ops.notify(wil->platform_handle, 1368 WIL_PLATFORM_EVT_FW_RDY); 1369 if (rc) { 1370 wil_err(wil, "FW_RDY notify failed, rc %d\n", 1371 rc); 1372 rc = 0; 1373 } 1374 } 1375 } 1376 1377 return rc; 1378 1379 out: 1380 clear_bit(wil_status_resetting, wil->status); 1381 return rc; 1382 } 1383 1384 void wil_fw_error_recovery(struct wil6210_priv *wil) 1385 { 1386 wil_dbg_misc(wil, "starting fw error recovery\n"); 1387 1388 if (test_bit(wil_status_resetting, wil->status)) { 1389 wil_info(wil, "Reset already in progress\n"); 1390 return; 1391 } 1392 1393 wil->recovery_state = fw_recovery_pending; 1394 schedule_work(&wil->fw_error_worker); 1395 } 1396 1397 int __wil_up(struct wil6210_priv *wil) 1398 { 1399 struct net_device *ndev = wil->main_ndev; 1400 struct wireless_dev *wdev = ndev->ieee80211_ptr; 1401 int rc; 1402 1403 WARN_ON(!mutex_is_locked(&wil->mutex)); 1404 1405 rc = wil_reset(wil, true); 1406 if (rc) 1407 return rc; 1408 1409 /* Rx VRING. After MAC and beacon */ 1410 rc = wil_rx_init(wil, 1 << rx_ring_order); 1411 if (rc) 1412 return rc; 1413 1414 switch (wdev->iftype) { 1415 case NL80211_IFTYPE_STATION: 1416 wil_dbg_misc(wil, "type: STATION\n"); 1417 ndev->type = ARPHRD_ETHER; 1418 break; 1419 case NL80211_IFTYPE_AP: 1420 wil_dbg_misc(wil, "type: AP\n"); 1421 ndev->type = ARPHRD_ETHER; 1422 break; 1423 case NL80211_IFTYPE_P2P_CLIENT: 1424 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 1425 ndev->type = ARPHRD_ETHER; 1426 break; 1427 case NL80211_IFTYPE_P2P_GO: 1428 wil_dbg_misc(wil, "type: P2P_GO\n"); 1429 ndev->type = ARPHRD_ETHER; 1430 break; 1431 case NL80211_IFTYPE_MONITOR: 1432 wil_dbg_misc(wil, "type: Monitor\n"); 1433 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 1434 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 1435 break; 1436 default: 1437 return -EOPNOTSUPP; 1438 } 1439 1440 /* MAC address - pre-requisite for other commands */ 1441 wmi_set_mac_address(wil, ndev->dev_addr); 1442 1443 wil_dbg_misc(wil, "NAPI enable\n"); 1444 napi_enable(&wil->napi_rx); 1445 napi_enable(&wil->napi_tx); 1446 set_bit(wil_status_napi_en, wil->status); 1447 1448 wil6210_bus_request(wil, WIL_DEFAULT_BUS_REQUEST_KBPS); 1449 1450 return 0; 1451 } 1452 1453 int wil_up(struct wil6210_priv *wil) 1454 { 1455 int rc; 1456 1457 wil_dbg_misc(wil, "up\n"); 1458 1459 mutex_lock(&wil->mutex); 1460 rc = __wil_up(wil); 1461 mutex_unlock(&wil->mutex); 1462 1463 return rc; 1464 } 1465 1466 int __wil_down(struct wil6210_priv *wil) 1467 { 1468 WARN_ON(!mutex_is_locked(&wil->mutex)); 1469 1470 set_bit(wil_status_resetting, wil->status); 1471 1472 wil6210_bus_request(wil, 0); 1473 1474 wil_disable_irq(wil); 1475 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 1476 napi_disable(&wil->napi_rx); 1477 napi_disable(&wil->napi_tx); 1478 wil_dbg_misc(wil, "NAPI disable\n"); 1479 } 1480 wil_enable_irq(wil); 1481 1482 mutex_lock(&wil->vif_mutex); 1483 wil_p2p_stop_radio_operations(wil); 1484 wil_abort_scan_all_vifs(wil, false); 1485 mutex_unlock(&wil->vif_mutex); 1486 1487 return wil_reset(wil, false); 1488 } 1489 1490 int wil_down(struct wil6210_priv *wil) 1491 { 1492 int rc; 1493 1494 wil_dbg_misc(wil, "down\n"); 1495 1496 wil_set_recovery_state(wil, fw_recovery_idle); 1497 mutex_lock(&wil->mutex); 1498 rc = __wil_down(wil); 1499 mutex_unlock(&wil->mutex); 1500 1501 return rc; 1502 } 1503 1504 int wil_find_cid(struct wil6210_priv *wil, u8 mid, const u8 *mac) 1505 { 1506 int i; 1507 int rc = -ENOENT; 1508 1509 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1510 if (wil->sta[i].mid == mid && 1511 wil->sta[i].status != wil_sta_unused && 1512 ether_addr_equal(wil->sta[i].addr, mac)) { 1513 rc = i; 1514 break; 1515 } 1516 } 1517 1518 return rc; 1519 } 1520 1521 void wil_halp_vote(struct wil6210_priv *wil) 1522 { 1523 unsigned long rc; 1524 unsigned long to_jiffies = msecs_to_jiffies(WAIT_FOR_HALP_VOTE_MS); 1525 1526 mutex_lock(&wil->halp.lock); 1527 1528 wil_dbg_irq(wil, "halp_vote: start, HALP ref_cnt (%d)\n", 1529 wil->halp.ref_cnt); 1530 1531 if (++wil->halp.ref_cnt == 1) { 1532 reinit_completion(&wil->halp.comp); 1533 wil6210_set_halp(wil); 1534 rc = wait_for_completion_timeout(&wil->halp.comp, to_jiffies); 1535 if (!rc) { 1536 wil_err(wil, "HALP vote timed out\n"); 1537 /* Mask HALP as done in case the interrupt is raised */ 1538 wil6210_mask_halp(wil); 1539 } else { 1540 wil_dbg_irq(wil, 1541 "halp_vote: HALP vote completed after %d ms\n", 1542 jiffies_to_msecs(to_jiffies - rc)); 1543 } 1544 } 1545 1546 wil_dbg_irq(wil, "halp_vote: end, HALP ref_cnt (%d)\n", 1547 wil->halp.ref_cnt); 1548 1549 mutex_unlock(&wil->halp.lock); 1550 } 1551 1552 void wil_halp_unvote(struct wil6210_priv *wil) 1553 { 1554 WARN_ON(wil->halp.ref_cnt == 0); 1555 1556 mutex_lock(&wil->halp.lock); 1557 1558 wil_dbg_irq(wil, "halp_unvote: start, HALP ref_cnt (%d)\n", 1559 wil->halp.ref_cnt); 1560 1561 if (--wil->halp.ref_cnt == 0) { 1562 wil6210_clear_halp(wil); 1563 wil_dbg_irq(wil, "HALP unvote\n"); 1564 } 1565 1566 wil_dbg_irq(wil, "halp_unvote:end, HALP ref_cnt (%d)\n", 1567 wil->halp.ref_cnt); 1568 1569 mutex_unlock(&wil->halp.lock); 1570 } 1571