1 /* 2 * Copyright (c) 2012-2017 Qualcomm Atheros, Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/moduleparam.h> 18 #include <linux/if_arp.h> 19 #include <linux/etherdevice.h> 20 21 #include "wil6210.h" 22 #include "txrx.h" 23 #include "wmi.h" 24 #include "boot_loader.h" 25 26 #define WAIT_FOR_HALP_VOTE_MS 100 27 #define WAIT_FOR_SCAN_ABORT_MS 1000 28 29 bool debug_fw; /* = false; */ 30 module_param(debug_fw, bool, 0444); 31 MODULE_PARM_DESC(debug_fw, " do not perform card reset. For FW debug"); 32 33 static bool oob_mode; 34 module_param(oob_mode, bool, 0444); 35 MODULE_PARM_DESC(oob_mode, 36 " enable out of the box (OOB) mode in FW, for diagnostics and certification"); 37 38 bool no_fw_recovery; 39 module_param(no_fw_recovery, bool, 0644); 40 MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery"); 41 42 /* if not set via modparam, will be set to default value of 1/8 of 43 * rx ring size during init flow 44 */ 45 unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT; 46 module_param(rx_ring_overflow_thrsh, ushort, 0444); 47 MODULE_PARM_DESC(rx_ring_overflow_thrsh, 48 " RX ring overflow threshold in descriptors."); 49 50 /* We allow allocation of more than 1 page buffers to support large packets. 51 * It is suboptimal behavior performance wise in case MTU above page size. 52 */ 53 unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 54 static int mtu_max_set(const char *val, const struct kernel_param *kp) 55 { 56 int ret; 57 58 /* sets mtu_max directly. no need to restore it in case of 59 * illegal value since we assume this will fail insmod 60 */ 61 ret = param_set_uint(val, kp); 62 if (ret) 63 return ret; 64 65 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU) 66 ret = -EINVAL; 67 68 return ret; 69 } 70 71 static const struct kernel_param_ops mtu_max_ops = { 72 .set = mtu_max_set, 73 .get = param_get_uint, 74 }; 75 76 module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, 0444); 77 MODULE_PARM_DESC(mtu_max, " Max MTU value."); 78 79 static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT; 80 static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT; 81 static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT; 82 83 static int ring_order_set(const char *val, const struct kernel_param *kp) 84 { 85 int ret; 86 uint x; 87 88 ret = kstrtouint(val, 0, &x); 89 if (ret) 90 return ret; 91 92 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX)) 93 return -EINVAL; 94 95 *((uint *)kp->arg) = x; 96 97 return 0; 98 } 99 100 static const struct kernel_param_ops ring_order_ops = { 101 .set = ring_order_set, 102 .get = param_get_uint, 103 }; 104 105 module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, 0444); 106 MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order"); 107 module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, 0444); 108 MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order"); 109 module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, 0444); 110 MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order"); 111 112 #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 113 #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 114 115 /* 116 * Due to a hardware issue, 117 * one has to read/write to/from NIC in 32-bit chunks; 118 * regular memcpy_fromio and siblings will 119 * not work on 64-bit platform - it uses 64-bit transactions 120 * 121 * Force 32-bit transactions to enable NIC on 64-bit platforms 122 * 123 * To avoid byte swap on big endian host, __raw_{read|write}l 124 * should be used - {read|write}l would swap bytes to provide 125 * little endian on PCI value in host endianness. 126 */ 127 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 128 size_t count) 129 { 130 u32 *d = dst; 131 const volatile u32 __iomem *s = src; 132 133 /* size_t is unsigned, if (count%4 != 0) it will wrap */ 134 for (count += 4; count > 4; count -= 4) 135 *d++ = __raw_readl(s++); 136 } 137 138 void wil_memcpy_fromio_halp_vote(struct wil6210_priv *wil, void *dst, 139 const volatile void __iomem *src, size_t count) 140 { 141 wil_halp_vote(wil); 142 wil_memcpy_fromio_32(dst, src, count); 143 wil_halp_unvote(wil); 144 } 145 146 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, 147 size_t count) 148 { 149 volatile u32 __iomem *d = dst; 150 const u32 *s = src; 151 152 for (count += 4; count > 4; count -= 4) 153 __raw_writel(*s++, d++); 154 } 155 156 void wil_memcpy_toio_halp_vote(struct wil6210_priv *wil, 157 volatile void __iomem *dst, 158 const void *src, size_t count) 159 { 160 wil_halp_vote(wil); 161 wil_memcpy_toio_32(dst, src, count); 162 wil_halp_unvote(wil); 163 } 164 165 static void wil_disconnect_cid(struct wil6210_priv *wil, int cid, 166 u16 reason_code, bool from_event) 167 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) 168 { 169 uint i; 170 struct net_device *ndev = wil_to_ndev(wil); 171 struct wireless_dev *wdev = wil->wdev; 172 struct wil_sta_info *sta = &wil->sta[cid]; 173 174 might_sleep(); 175 wil_dbg_misc(wil, "disconnect_cid: CID %d, status %d\n", 176 cid, sta->status); 177 /* inform upper/lower layers */ 178 if (sta->status != wil_sta_unused) { 179 if (!from_event) { 180 bool del_sta = (wdev->iftype == NL80211_IFTYPE_AP) ? 181 disable_ap_sme : false; 182 wmi_disconnect_sta(wil, sta->addr, reason_code, 183 true, del_sta); 184 } 185 186 switch (wdev->iftype) { 187 case NL80211_IFTYPE_AP: 188 case NL80211_IFTYPE_P2P_GO: 189 /* AP-like interface */ 190 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 191 break; 192 default: 193 break; 194 } 195 sta->status = wil_sta_unused; 196 } 197 /* reorder buffers */ 198 for (i = 0; i < WIL_STA_TID_NUM; i++) { 199 struct wil_tid_ampdu_rx *r; 200 201 spin_lock_bh(&sta->tid_rx_lock); 202 203 r = sta->tid_rx[i]; 204 sta->tid_rx[i] = NULL; 205 wil_tid_ampdu_rx_free(wil, r); 206 207 spin_unlock_bh(&sta->tid_rx_lock); 208 } 209 /* crypto context */ 210 memset(sta->tid_crypto_rx, 0, sizeof(sta->tid_crypto_rx)); 211 memset(&sta->group_crypto_rx, 0, sizeof(sta->group_crypto_rx)); 212 /* release vrings */ 213 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 214 if (wil->vring2cid_tid[i][0] == cid) 215 wil_vring_fini_tx(wil, i); 216 } 217 /* statistics */ 218 memset(&sta->stats, 0, sizeof(sta->stats)); 219 } 220 221 static bool wil_is_connected(struct wil6210_priv *wil) 222 { 223 int i; 224 225 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 226 if (wil->sta[i].status == wil_sta_connected) 227 return true; 228 } 229 230 return false; 231 } 232 233 static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 234 u16 reason_code, bool from_event) 235 { 236 int cid = -ENOENT; 237 struct net_device *ndev = wil_to_ndev(wil); 238 struct wireless_dev *wdev = wil->wdev; 239 240 if (unlikely(!ndev)) 241 return; 242 243 might_sleep(); 244 wil_info(wil, "bssid=%pM, reason=%d, ev%s\n", bssid, 245 reason_code, from_event ? "+" : "-"); 246 247 /* Cases are: 248 * - disconnect single STA, still connected 249 * - disconnect single STA, already disconnected 250 * - disconnect all 251 * 252 * For "disconnect all", there are 3 options: 253 * - bssid == NULL 254 * - bssid is broadcast address (ff:ff:ff:ff:ff:ff) 255 * - bssid is our MAC address 256 */ 257 if (bssid && !is_broadcast_ether_addr(bssid) && 258 !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) { 259 cid = wil_find_cid(wil, bssid); 260 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 261 bssid, cid, reason_code); 262 if (cid >= 0) /* disconnect 1 peer */ 263 wil_disconnect_cid(wil, cid, reason_code, from_event); 264 } else { /* all */ 265 wil_dbg_misc(wil, "Disconnect all\n"); 266 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 267 wil_disconnect_cid(wil, cid, reason_code, from_event); 268 } 269 270 /* link state */ 271 switch (wdev->iftype) { 272 case NL80211_IFTYPE_STATION: 273 case NL80211_IFTYPE_P2P_CLIENT: 274 wil_bcast_fini(wil); 275 wil_update_net_queues_bh(wil, NULL, true); 276 netif_carrier_off(ndev); 277 278 if (test_bit(wil_status_fwconnected, wil->status)) { 279 clear_bit(wil_status_fwconnected, wil->status); 280 cfg80211_disconnected(ndev, reason_code, 281 NULL, 0, false, GFP_KERNEL); 282 } else if (test_bit(wil_status_fwconnecting, wil->status)) { 283 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 284 WLAN_STATUS_UNSPECIFIED_FAILURE, 285 GFP_KERNEL); 286 } 287 clear_bit(wil_status_fwconnecting, wil->status); 288 break; 289 case NL80211_IFTYPE_AP: 290 case NL80211_IFTYPE_P2P_GO: 291 if (!wil_is_connected(wil)) { 292 wil_update_net_queues_bh(wil, NULL, true); 293 clear_bit(wil_status_fwconnected, wil->status); 294 } else { 295 wil_update_net_queues_bh(wil, NULL, false); 296 } 297 break; 298 default: 299 break; 300 } 301 } 302 303 static void wil_disconnect_worker(struct work_struct *work) 304 { 305 struct wil6210_priv *wil = container_of(work, 306 struct wil6210_priv, disconnect_worker); 307 308 mutex_lock(&wil->mutex); 309 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false); 310 mutex_unlock(&wil->mutex); 311 } 312 313 static void wil_connect_timer_fn(ulong x) 314 { 315 struct wil6210_priv *wil = (void *)x; 316 bool q; 317 318 wil_err(wil, "Connect timeout detected, disconnect station\n"); 319 320 /* reschedule to thread context - disconnect won't 321 * run from atomic context. 322 * queue on wmi_wq to prevent race with connect event. 323 */ 324 q = queue_work(wil->wmi_wq, &wil->disconnect_worker); 325 wil_dbg_wmi(wil, "queue_work of disconnect_worker -> %d\n", q); 326 } 327 328 static void wil_scan_timer_fn(ulong x) 329 { 330 struct wil6210_priv *wil = (void *)x; 331 332 clear_bit(wil_status_fwready, wil->status); 333 wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 334 wil_fw_error_recovery(wil); 335 } 336 337 static int wil_wait_for_recovery(struct wil6210_priv *wil) 338 { 339 if (wait_event_interruptible(wil->wq, wil->recovery_state != 340 fw_recovery_pending)) { 341 wil_err(wil, "Interrupt, canceling recovery\n"); 342 return -ERESTARTSYS; 343 } 344 if (wil->recovery_state != fw_recovery_running) { 345 wil_info(wil, "Recovery cancelled\n"); 346 return -EINTR; 347 } 348 wil_info(wil, "Proceed with recovery\n"); 349 return 0; 350 } 351 352 void wil_set_recovery_state(struct wil6210_priv *wil, int state) 353 { 354 wil_dbg_misc(wil, "set_recovery_state: %d -> %d\n", 355 wil->recovery_state, state); 356 357 wil->recovery_state = state; 358 wake_up_interruptible(&wil->wq); 359 } 360 361 bool wil_is_recovery_blocked(struct wil6210_priv *wil) 362 { 363 return no_fw_recovery && (wil->recovery_state == fw_recovery_pending); 364 } 365 366 static void wil_fw_error_worker(struct work_struct *work) 367 { 368 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 369 fw_error_worker); 370 struct wireless_dev *wdev = wil->wdev; 371 372 wil_dbg_misc(wil, "fw error worker\n"); 373 374 if (!netif_running(wil_to_ndev(wil))) { 375 wil_info(wil, "No recovery - interface is down\n"); 376 return; 377 } 378 379 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 380 * passed since last recovery attempt 381 */ 382 if (time_is_after_jiffies(wil->last_fw_recovery + 383 WIL6210_FW_RECOVERY_TO)) 384 wil->recovery_count++; 385 else 386 wil->recovery_count = 1; /* fw was alive for a long time */ 387 388 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 389 wil_err(wil, "too many recovery attempts (%d), giving up\n", 390 wil->recovery_count); 391 return; 392 } 393 394 wil->last_fw_recovery = jiffies; 395 396 wil_info(wil, "fw error recovery requested (try %d)...\n", 397 wil->recovery_count); 398 if (!no_fw_recovery) 399 wil->recovery_state = fw_recovery_running; 400 if (wil_wait_for_recovery(wil) != 0) 401 return; 402 403 mutex_lock(&wil->mutex); 404 switch (wdev->iftype) { 405 case NL80211_IFTYPE_STATION: 406 case NL80211_IFTYPE_P2P_CLIENT: 407 case NL80211_IFTYPE_MONITOR: 408 /* silent recovery, upper layers will see disconnect */ 409 __wil_down(wil); 410 __wil_up(wil); 411 break; 412 case NL80211_IFTYPE_AP: 413 case NL80211_IFTYPE_P2P_GO: 414 wil_info(wil, "No recovery for AP-like interface\n"); 415 /* recovery in these modes is done by upper layers */ 416 break; 417 default: 418 wil_err(wil, "No recovery - unknown interface type %d\n", 419 wdev->iftype); 420 break; 421 } 422 mutex_unlock(&wil->mutex); 423 } 424 425 static int wil_find_free_vring(struct wil6210_priv *wil) 426 { 427 int i; 428 429 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 430 if (!wil->vring_tx[i].va) 431 return i; 432 } 433 return -EINVAL; 434 } 435 436 int wil_tx_init(struct wil6210_priv *wil, int cid) 437 { 438 int rc = -EINVAL, ringid; 439 440 if (cid < 0) { 441 wil_err(wil, "No connection pending\n"); 442 goto out; 443 } 444 ringid = wil_find_free_vring(wil); 445 if (ringid < 0) { 446 wil_err(wil, "No free vring found\n"); 447 goto out; 448 } 449 450 wil_dbg_wmi(wil, "Configure for connection CID %d vring %d\n", 451 cid, ringid); 452 453 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); 454 if (rc) 455 wil_err(wil, "wil_vring_init_tx for CID %d vring %d failed\n", 456 cid, ringid); 457 458 out: 459 return rc; 460 } 461 462 int wil_bcast_init(struct wil6210_priv *wil) 463 { 464 int ri = wil->bcast_vring, rc; 465 466 if ((ri >= 0) && wil->vring_tx[ri].va) 467 return 0; 468 469 ri = wil_find_free_vring(wil); 470 if (ri < 0) 471 return ri; 472 473 wil->bcast_vring = ri; 474 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order); 475 if (rc) 476 wil->bcast_vring = -1; 477 478 return rc; 479 } 480 481 void wil_bcast_fini(struct wil6210_priv *wil) 482 { 483 int ri = wil->bcast_vring; 484 485 if (ri < 0) 486 return; 487 488 wil->bcast_vring = -1; 489 wil_vring_fini_tx(wil, ri); 490 } 491 492 int wil_priv_init(struct wil6210_priv *wil) 493 { 494 uint i; 495 496 wil_dbg_misc(wil, "priv_init\n"); 497 498 memset(wil->sta, 0, sizeof(wil->sta)); 499 for (i = 0; i < WIL6210_MAX_CID; i++) 500 spin_lock_init(&wil->sta[i].tid_rx_lock); 501 502 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) 503 spin_lock_init(&wil->vring_tx_data[i].lock); 504 505 mutex_init(&wil->mutex); 506 mutex_init(&wil->wmi_mutex); 507 mutex_init(&wil->probe_client_mutex); 508 mutex_init(&wil->p2p_wdev_mutex); 509 mutex_init(&wil->halp.lock); 510 511 init_completion(&wil->wmi_ready); 512 init_completion(&wil->wmi_call); 513 init_completion(&wil->halp.comp); 514 515 wil->bcast_vring = -1; 516 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 517 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 518 setup_timer(&wil->p2p.discovery_timer, wil_p2p_discovery_timer_fn, 519 (ulong)wil); 520 521 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 522 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 523 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 524 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker); 525 INIT_WORK(&wil->p2p.delayed_listen_work, wil_p2p_delayed_listen_work); 526 527 INIT_LIST_HEAD(&wil->pending_wmi_ev); 528 INIT_LIST_HEAD(&wil->probe_client_pending); 529 spin_lock_init(&wil->wmi_ev_lock); 530 spin_lock_init(&wil->net_queue_lock); 531 wil->net_queue_stopped = 1; 532 init_waitqueue_head(&wil->wq); 533 534 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 535 if (!wil->wmi_wq) 536 return -EAGAIN; 537 538 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 539 if (!wil->wq_service) 540 goto out_wmi_wq; 541 542 wil->last_fw_recovery = jiffies; 543 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 544 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 545 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 546 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 547 548 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 549 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 550 return 0; 551 552 out_wmi_wq: 553 destroy_workqueue(wil->wmi_wq); 554 555 return -EAGAIN; 556 } 557 558 /** 559 * wil6210_disconnect - disconnect one connection 560 * @wil: driver context 561 * @bssid: peer to disconnect, NULL to disconnect all 562 * @reason_code: Reason code for the Disassociation frame 563 * @from_event: whether is invoked from FW event handler 564 * 565 * Disconnect and release associated resources. If invoked not from the 566 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 567 */ 568 void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 569 u16 reason_code, bool from_event) 570 { 571 wil_dbg_misc(wil, "disconnect\n"); 572 573 del_timer_sync(&wil->connect_timer); 574 _wil6210_disconnect(wil, bssid, reason_code, from_event); 575 } 576 577 void wil_priv_deinit(struct wil6210_priv *wil) 578 { 579 wil_dbg_misc(wil, "priv_deinit\n"); 580 581 wil_set_recovery_state(wil, fw_recovery_idle); 582 del_timer_sync(&wil->scan_timer); 583 del_timer_sync(&wil->p2p.discovery_timer); 584 cancel_work_sync(&wil->disconnect_worker); 585 cancel_work_sync(&wil->fw_error_worker); 586 cancel_work_sync(&wil->p2p.discovery_expired_work); 587 cancel_work_sync(&wil->p2p.delayed_listen_work); 588 mutex_lock(&wil->mutex); 589 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 590 mutex_unlock(&wil->mutex); 591 wmi_event_flush(wil); 592 wil_probe_client_flush(wil); 593 cancel_work_sync(&wil->probe_client_worker); 594 destroy_workqueue(wil->wq_service); 595 destroy_workqueue(wil->wmi_wq); 596 } 597 598 static inline void wil_halt_cpu(struct wil6210_priv *wil) 599 { 600 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 601 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 602 } 603 604 static inline void wil_release_cpu(struct wil6210_priv *wil) 605 { 606 /* Start CPU */ 607 wil_w(wil, RGF_USER_USER_CPU_0, 1); 608 } 609 610 static void wil_set_oob_mode(struct wil6210_priv *wil, bool enable) 611 { 612 wil_info(wil, "enable=%d\n", enable); 613 if (enable) 614 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 615 else 616 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 617 } 618 619 static int wil_target_reset(struct wil6210_priv *wil) 620 { 621 int delay = 0; 622 u32 x, x1 = 0; 623 624 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 625 626 /* Clear MAC link up */ 627 wil_s(wil, RGF_HP_CTRL, BIT(15)); 628 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 629 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 630 631 wil_halt_cpu(wil); 632 633 /* clear all boot loader "ready" bits */ 634 wil_w(wil, RGF_USER_BL + 635 offsetof(struct bl_dedicated_registers_v0, boot_loader_ready), 0); 636 /* Clear Fw Download notification */ 637 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 638 639 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 640 /* XTAL stabilization should take about 3ms */ 641 usleep_range(5000, 7000); 642 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 643 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 644 wil_err(wil, "Xtal stabilization timeout\n" 645 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 646 return -ETIME; 647 } 648 /* switch 10k to XTAL*/ 649 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 650 /* 40 MHz */ 651 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 652 653 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 654 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 655 656 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 657 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 658 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 659 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 660 661 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 662 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 663 664 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 665 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 666 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 667 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 668 669 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 670 /* reset A2 PCIE AHB */ 671 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 672 673 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 674 675 /* wait until device ready. typical time is 20..80 msec */ 676 do { 677 msleep(RST_DELAY); 678 x = wil_r(wil, RGF_USER_BL + 679 offsetof(struct bl_dedicated_registers_v0, 680 boot_loader_ready)); 681 if (x1 != x) { 682 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x); 683 x1 = x; 684 } 685 if (delay++ > RST_COUNT) { 686 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 687 x); 688 return -ETIME; 689 } 690 } while (x != BL_READY); 691 692 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 693 694 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 695 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 696 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 697 698 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 699 return 0; 700 } 701 702 static void wil_collect_fw_info(struct wil6210_priv *wil) 703 { 704 struct wiphy *wiphy = wil_to_wiphy(wil); 705 u8 retry_short; 706 int rc; 707 708 rc = wmi_get_mgmt_retry(wil, &retry_short); 709 if (!rc) { 710 wiphy->retry_short = retry_short; 711 wil_dbg_misc(wil, "FW retry_short: %d\n", retry_short); 712 } 713 } 714 715 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 716 { 717 le32_to_cpus(&r->base); 718 le16_to_cpus(&r->entry_size); 719 le16_to_cpus(&r->size); 720 le32_to_cpus(&r->tail); 721 le32_to_cpus(&r->head); 722 } 723 724 static int wil_get_bl_info(struct wil6210_priv *wil) 725 { 726 struct net_device *ndev = wil_to_ndev(wil); 727 struct wiphy *wiphy = wil_to_wiphy(wil); 728 union { 729 struct bl_dedicated_registers_v0 bl0; 730 struct bl_dedicated_registers_v1 bl1; 731 } bl; 732 u32 bl_ver; 733 u8 *mac; 734 u16 rf_status; 735 736 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 737 sizeof(bl)); 738 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 739 mac = bl.bl0.mac_address; 740 741 if (bl_ver == 0) { 742 le32_to_cpus(&bl.bl0.rf_type); 743 le32_to_cpus(&bl.bl0.baseband_type); 744 rf_status = 0; /* actually, unknown */ 745 wil_info(wil, 746 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 747 bl_ver, mac, 748 bl.bl0.rf_type, bl.bl0.baseband_type); 749 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 750 } else { 751 le16_to_cpus(&bl.bl1.rf_type); 752 rf_status = le16_to_cpu(bl.bl1.rf_status); 753 le32_to_cpus(&bl.bl1.baseband_type); 754 le16_to_cpus(&bl.bl1.bl_version_subminor); 755 le16_to_cpus(&bl.bl1.bl_version_build); 756 wil_info(wil, 757 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 758 bl_ver, mac, 759 bl.bl1.rf_type, rf_status, 760 bl.bl1.baseband_type); 761 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 762 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 763 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 764 } 765 766 if (!is_valid_ether_addr(mac)) { 767 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 768 return -EINVAL; 769 } 770 771 ether_addr_copy(ndev->perm_addr, mac); 772 ether_addr_copy(wiphy->perm_addr, mac); 773 if (!is_valid_ether_addr(ndev->dev_addr)) 774 ether_addr_copy(ndev->dev_addr, mac); 775 776 if (rf_status) {/* bad RF cable? */ 777 wil_err(wil, "RF communication error 0x%04x", 778 rf_status); 779 return -EAGAIN; 780 } 781 782 return 0; 783 } 784 785 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 786 { 787 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 788 u32 bl_ver = wil_r(wil, RGF_USER_BL + 789 offsetof(struct bl_dedicated_registers_v0, 790 boot_loader_struct_version)); 791 792 if (bl_ver < 2) 793 return; 794 795 bl_assert_code = wil_r(wil, RGF_USER_BL + 796 offsetof(struct bl_dedicated_registers_v1, 797 bl_assert_code)); 798 bl_assert_blink = wil_r(wil, RGF_USER_BL + 799 offsetof(struct bl_dedicated_registers_v1, 800 bl_assert_blink)); 801 bl_magic_number = wil_r(wil, RGF_USER_BL + 802 offsetof(struct bl_dedicated_registers_v1, 803 bl_magic_number)); 804 805 if (is_err) { 806 wil_err(wil, 807 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 808 bl_assert_code, bl_assert_blink, bl_magic_number); 809 } else { 810 wil_dbg_misc(wil, 811 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 812 bl_assert_code, bl_assert_blink, bl_magic_number); 813 } 814 } 815 816 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 817 { 818 ulong to = msecs_to_jiffies(1000); 819 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 820 821 if (0 == left) { 822 wil_err(wil, "Firmware not ready\n"); 823 return -ETIME; 824 } else { 825 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 826 jiffies_to_msecs(to-left), wil->hw_version); 827 } 828 return 0; 829 } 830 831 void wil_abort_scan(struct wil6210_priv *wil, bool sync) 832 { 833 int rc; 834 struct cfg80211_scan_info info = { 835 .aborted = true, 836 }; 837 838 lockdep_assert_held(&wil->p2p_wdev_mutex); 839 840 if (!wil->scan_request) 841 return; 842 843 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", wil->scan_request); 844 del_timer_sync(&wil->scan_timer); 845 mutex_unlock(&wil->p2p_wdev_mutex); 846 rc = wmi_abort_scan(wil); 847 if (!rc && sync) 848 wait_event_interruptible_timeout(wil->wq, !wil->scan_request, 849 msecs_to_jiffies( 850 WAIT_FOR_SCAN_ABORT_MS)); 851 852 mutex_lock(&wil->p2p_wdev_mutex); 853 if (wil->scan_request) { 854 cfg80211_scan_done(wil->scan_request, &info); 855 wil->scan_request = NULL; 856 } 857 } 858 859 /* 860 * We reset all the structures, and we reset the UMAC. 861 * After calling this routine, you're expected to reload 862 * the firmware. 863 */ 864 int wil_reset(struct wil6210_priv *wil, bool load_fw) 865 { 866 int rc; 867 868 wil_dbg_misc(wil, "reset\n"); 869 870 WARN_ON(!mutex_is_locked(&wil->mutex)); 871 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 872 873 if (debug_fw) { 874 static const u8 mac[ETH_ALEN] = { 875 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 876 }; 877 struct net_device *ndev = wil_to_ndev(wil); 878 879 ether_addr_copy(ndev->perm_addr, mac); 880 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 881 return 0; 882 } 883 884 if (wil->hw_version == HW_VER_UNKNOWN) 885 return -ENODEV; 886 887 if (wil->platform_ops.notify) { 888 rc = wil->platform_ops.notify(wil->platform_handle, 889 WIL_PLATFORM_EVT_PRE_RESET); 890 if (rc) 891 wil_err(wil, "PRE_RESET platform notify failed, rc %d\n", 892 rc); 893 } 894 895 set_bit(wil_status_resetting, wil->status); 896 897 cancel_work_sync(&wil->disconnect_worker); 898 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 899 wil_bcast_fini(wil); 900 901 /* Disable device led before reset*/ 902 wmi_led_cfg(wil, false); 903 904 /* prevent NAPI from being scheduled and prevent wmi commands */ 905 mutex_lock(&wil->wmi_mutex); 906 bitmap_zero(wil->status, wil_status_last); 907 mutex_unlock(&wil->wmi_mutex); 908 909 mutex_lock(&wil->p2p_wdev_mutex); 910 wil_abort_scan(wil, false); 911 mutex_unlock(&wil->p2p_wdev_mutex); 912 913 wil_mask_irq(wil); 914 915 wmi_event_flush(wil); 916 917 flush_workqueue(wil->wq_service); 918 flush_workqueue(wil->wmi_wq); 919 920 wil_bl_crash_info(wil, false); 921 wil_disable_irq(wil); 922 rc = wil_target_reset(wil); 923 wil6210_clear_irq(wil); 924 wil_enable_irq(wil); 925 wil_rx_fini(wil); 926 if (rc) { 927 wil_bl_crash_info(wil, true); 928 return rc; 929 } 930 931 rc = wil_get_bl_info(wil); 932 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */ 933 rc = 0; 934 if (rc) 935 return rc; 936 937 wil_set_oob_mode(wil, oob_mode); 938 if (load_fw) { 939 wil_info(wil, "Use firmware <%s> + board <%s>\n", 940 wil->wil_fw_name, WIL_BOARD_FILE_NAME); 941 942 wil_halt_cpu(wil); 943 memset(wil->fw_version, 0, sizeof(wil->fw_version)); 944 /* Loading f/w from the file */ 945 rc = wil_request_firmware(wil, wil->wil_fw_name, true); 946 if (rc) 947 return rc; 948 rc = wil_request_firmware(wil, WIL_BOARD_FILE_NAME, true); 949 if (rc) 950 return rc; 951 952 /* Mark FW as loaded from host */ 953 wil_s(wil, RGF_USER_USAGE_6, 1); 954 955 /* clear any interrupts which on-card-firmware 956 * may have set 957 */ 958 wil6210_clear_irq(wil); 959 /* CAF_ICR - clear and mask */ 960 /* it is W1C, clear by writing back same value */ 961 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 962 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 963 964 wil_release_cpu(wil); 965 } 966 967 /* init after reset */ 968 wil->ap_isolate = 0; 969 reinit_completion(&wil->wmi_ready); 970 reinit_completion(&wil->wmi_call); 971 reinit_completion(&wil->halp.comp); 972 973 if (load_fw) { 974 wil_configure_interrupt_moderation(wil); 975 wil_unmask_irq(wil); 976 977 /* we just started MAC, wait for FW ready */ 978 rc = wil_wait_for_fw_ready(wil); 979 if (rc) 980 return rc; 981 982 /* check FW is responsive */ 983 rc = wmi_echo(wil); 984 if (rc) { 985 wil_err(wil, "wmi_echo failed, rc %d\n", rc); 986 return rc; 987 } 988 989 wil_collect_fw_info(wil); 990 991 if (wil->platform_ops.notify) { 992 rc = wil->platform_ops.notify(wil->platform_handle, 993 WIL_PLATFORM_EVT_FW_RDY); 994 if (rc) { 995 wil_err(wil, "FW_RDY notify failed, rc %d\n", 996 rc); 997 rc = 0; 998 } 999 } 1000 } 1001 1002 return rc; 1003 } 1004 1005 void wil_fw_error_recovery(struct wil6210_priv *wil) 1006 { 1007 wil_dbg_misc(wil, "starting fw error recovery\n"); 1008 1009 if (test_bit(wil_status_resetting, wil->status)) { 1010 wil_info(wil, "Reset already in progress\n"); 1011 return; 1012 } 1013 1014 wil->recovery_state = fw_recovery_pending; 1015 schedule_work(&wil->fw_error_worker); 1016 } 1017 1018 int __wil_up(struct wil6210_priv *wil) 1019 { 1020 struct net_device *ndev = wil_to_ndev(wil); 1021 struct wireless_dev *wdev = wil->wdev; 1022 int rc; 1023 1024 WARN_ON(!mutex_is_locked(&wil->mutex)); 1025 1026 rc = wil_reset(wil, true); 1027 if (rc) 1028 return rc; 1029 1030 /* Rx VRING. After MAC and beacon */ 1031 rc = wil_rx_init(wil, 1 << rx_ring_order); 1032 if (rc) 1033 return rc; 1034 1035 switch (wdev->iftype) { 1036 case NL80211_IFTYPE_STATION: 1037 wil_dbg_misc(wil, "type: STATION\n"); 1038 ndev->type = ARPHRD_ETHER; 1039 break; 1040 case NL80211_IFTYPE_AP: 1041 wil_dbg_misc(wil, "type: AP\n"); 1042 ndev->type = ARPHRD_ETHER; 1043 break; 1044 case NL80211_IFTYPE_P2P_CLIENT: 1045 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 1046 ndev->type = ARPHRD_ETHER; 1047 break; 1048 case NL80211_IFTYPE_P2P_GO: 1049 wil_dbg_misc(wil, "type: P2P_GO\n"); 1050 ndev->type = ARPHRD_ETHER; 1051 break; 1052 case NL80211_IFTYPE_MONITOR: 1053 wil_dbg_misc(wil, "type: Monitor\n"); 1054 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 1055 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 1056 break; 1057 default: 1058 return -EOPNOTSUPP; 1059 } 1060 1061 /* MAC address - pre-requisite for other commands */ 1062 wmi_set_mac_address(wil, ndev->dev_addr); 1063 1064 wil_dbg_misc(wil, "NAPI enable\n"); 1065 napi_enable(&wil->napi_rx); 1066 napi_enable(&wil->napi_tx); 1067 set_bit(wil_status_napi_en, wil->status); 1068 1069 if (wil->platform_ops.bus_request) 1070 wil->platform_ops.bus_request(wil->platform_handle, 1071 WIL_MAX_BUS_REQUEST_KBPS); 1072 1073 return 0; 1074 } 1075 1076 int wil_up(struct wil6210_priv *wil) 1077 { 1078 int rc; 1079 1080 wil_dbg_misc(wil, "up\n"); 1081 1082 mutex_lock(&wil->mutex); 1083 rc = __wil_up(wil); 1084 mutex_unlock(&wil->mutex); 1085 1086 return rc; 1087 } 1088 1089 int __wil_down(struct wil6210_priv *wil) 1090 { 1091 WARN_ON(!mutex_is_locked(&wil->mutex)); 1092 1093 set_bit(wil_status_resetting, wil->status); 1094 1095 if (wil->platform_ops.bus_request) 1096 wil->platform_ops.bus_request(wil->platform_handle, 0); 1097 1098 wil_disable_irq(wil); 1099 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 1100 napi_disable(&wil->napi_rx); 1101 napi_disable(&wil->napi_tx); 1102 wil_dbg_misc(wil, "NAPI disable\n"); 1103 } 1104 wil_enable_irq(wil); 1105 1106 mutex_lock(&wil->p2p_wdev_mutex); 1107 wil_p2p_stop_radio_operations(wil); 1108 wil_abort_scan(wil, false); 1109 mutex_unlock(&wil->p2p_wdev_mutex); 1110 1111 wil_reset(wil, false); 1112 1113 return 0; 1114 } 1115 1116 int wil_down(struct wil6210_priv *wil) 1117 { 1118 int rc; 1119 1120 wil_dbg_misc(wil, "down\n"); 1121 1122 wil_set_recovery_state(wil, fw_recovery_idle); 1123 mutex_lock(&wil->mutex); 1124 rc = __wil_down(wil); 1125 mutex_unlock(&wil->mutex); 1126 1127 return rc; 1128 } 1129 1130 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 1131 { 1132 int i; 1133 int rc = -ENOENT; 1134 1135 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1136 if ((wil->sta[i].status != wil_sta_unused) && 1137 ether_addr_equal(wil->sta[i].addr, mac)) { 1138 rc = i; 1139 break; 1140 } 1141 } 1142 1143 return rc; 1144 } 1145 1146 void wil_halp_vote(struct wil6210_priv *wil) 1147 { 1148 unsigned long rc; 1149 unsigned long to_jiffies = msecs_to_jiffies(WAIT_FOR_HALP_VOTE_MS); 1150 1151 mutex_lock(&wil->halp.lock); 1152 1153 wil_dbg_irq(wil, "halp_vote: start, HALP ref_cnt (%d)\n", 1154 wil->halp.ref_cnt); 1155 1156 if (++wil->halp.ref_cnt == 1) { 1157 wil6210_set_halp(wil); 1158 rc = wait_for_completion_timeout(&wil->halp.comp, to_jiffies); 1159 if (!rc) { 1160 wil_err(wil, "HALP vote timed out\n"); 1161 /* Mask HALP as done in case the interrupt is raised */ 1162 wil6210_mask_halp(wil); 1163 } else { 1164 wil_dbg_irq(wil, 1165 "halp_vote: HALP vote completed after %d ms\n", 1166 jiffies_to_msecs(to_jiffies - rc)); 1167 } 1168 } 1169 1170 wil_dbg_irq(wil, "halp_vote: end, HALP ref_cnt (%d)\n", 1171 wil->halp.ref_cnt); 1172 1173 mutex_unlock(&wil->halp.lock); 1174 } 1175 1176 void wil_halp_unvote(struct wil6210_priv *wil) 1177 { 1178 WARN_ON(wil->halp.ref_cnt == 0); 1179 1180 mutex_lock(&wil->halp.lock); 1181 1182 wil_dbg_irq(wil, "halp_unvote: start, HALP ref_cnt (%d)\n", 1183 wil->halp.ref_cnt); 1184 1185 if (--wil->halp.ref_cnt == 0) { 1186 wil6210_clear_halp(wil); 1187 wil_dbg_irq(wil, "HALP unvote\n"); 1188 } 1189 1190 wil_dbg_irq(wil, "halp_unvote:end, HALP ref_cnt (%d)\n", 1191 wil->halp.ref_cnt); 1192 1193 mutex_unlock(&wil->halp.lock); 1194 } 1195