1 /* 2 * Copyright (c) 2012-2016 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 28 bool debug_fw; /* = false; */ 29 module_param(debug_fw, bool, S_IRUGO); 30 MODULE_PARM_DESC(debug_fw, " do not perform card reset. For FW debug"); 31 32 static bool oob_mode; 33 module_param(oob_mode, bool, S_IRUGO); 34 MODULE_PARM_DESC(oob_mode, 35 " enable out of the box (OOB) mode in FW, for diagnostics and certification"); 36 37 bool no_fw_recovery; 38 module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR); 39 MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery"); 40 41 /* if not set via modparam, will be set to default value of 1/8 of 42 * rx ring size during init flow 43 */ 44 unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT; 45 module_param(rx_ring_overflow_thrsh, ushort, S_IRUGO); 46 MODULE_PARM_DESC(rx_ring_overflow_thrsh, 47 " RX ring overflow threshold in descriptors."); 48 49 /* We allow allocation of more than 1 page buffers to support large packets. 50 * It is suboptimal behavior performance wise in case MTU above page size. 51 */ 52 unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 53 static int mtu_max_set(const char *val, const struct kernel_param *kp) 54 { 55 int ret; 56 57 /* sets mtu_max directly. no need to restore it in case of 58 * illegal value since we assume this will fail insmod 59 */ 60 ret = param_set_uint(val, kp); 61 if (ret) 62 return ret; 63 64 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU) 65 ret = -EINVAL; 66 67 return ret; 68 } 69 70 static const struct kernel_param_ops mtu_max_ops = { 71 .set = mtu_max_set, 72 .get = param_get_uint, 73 }; 74 75 module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, S_IRUGO); 76 MODULE_PARM_DESC(mtu_max, " Max MTU value."); 77 78 static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT; 79 static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT; 80 static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT; 81 82 static int ring_order_set(const char *val, const struct kernel_param *kp) 83 { 84 int ret; 85 uint x; 86 87 ret = kstrtouint(val, 0, &x); 88 if (ret) 89 return ret; 90 91 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX)) 92 return -EINVAL; 93 94 *((uint *)kp->arg) = x; 95 96 return 0; 97 } 98 99 static const struct kernel_param_ops ring_order_ops = { 100 .set = ring_order_set, 101 .get = param_get_uint, 102 }; 103 104 module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, S_IRUGO); 105 MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order"); 106 module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, S_IRUGO); 107 MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order"); 108 module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, S_IRUGO); 109 MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order"); 110 111 #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 112 #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 113 114 /* 115 * Due to a hardware issue, 116 * one has to read/write to/from NIC in 32-bit chunks; 117 * regular memcpy_fromio and siblings will 118 * not work on 64-bit platform - it uses 64-bit transactions 119 * 120 * Force 32-bit transactions to enable NIC on 64-bit platforms 121 * 122 * To avoid byte swap on big endian host, __raw_{read|write}l 123 * should be used - {read|write}l would swap bytes to provide 124 * little endian on PCI value in host endianness. 125 */ 126 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 127 size_t count) 128 { 129 u32 *d = dst; 130 const volatile u32 __iomem *s = src; 131 132 /* size_t is unsigned, if (count%4 != 0) it will wrap */ 133 for (count += 4; count > 4; count -= 4) 134 *d++ = __raw_readl(s++); 135 } 136 137 void wil_memcpy_fromio_halp_vote(struct wil6210_priv *wil, void *dst, 138 const volatile void __iomem *src, size_t count) 139 { 140 wil_halp_vote(wil); 141 wil_memcpy_fromio_32(dst, src, count); 142 wil_halp_unvote(wil); 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; count -= 4) 152 __raw_writel(*s++, d++); 153 } 154 155 void wil_memcpy_toio_halp_vote(struct wil6210_priv *wil, 156 volatile void __iomem *dst, 157 const void *src, size_t count) 158 { 159 wil_halp_vote(wil); 160 wil_memcpy_toio_32(dst, src, count); 161 wil_halp_unvote(wil); 162 } 163 164 static void wil_disconnect_cid(struct wil6210_priv *wil, int cid, 165 u16 reason_code, bool from_event) 166 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) 167 { 168 uint i; 169 struct net_device *ndev = wil_to_ndev(wil); 170 struct wireless_dev *wdev = wil->wdev; 171 struct wil_sta_info *sta = &wil->sta[cid]; 172 173 might_sleep(); 174 wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid, 175 sta->status); 176 /* inform upper/lower layers */ 177 if (sta->status != wil_sta_unused) { 178 if (!from_event) 179 wmi_disconnect_sta(wil, sta->addr, reason_code, true); 180 181 switch (wdev->iftype) { 182 case NL80211_IFTYPE_AP: 183 case NL80211_IFTYPE_P2P_GO: 184 /* AP-like interface */ 185 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 186 break; 187 default: 188 break; 189 } 190 sta->status = wil_sta_unused; 191 } 192 /* reorder buffers */ 193 for (i = 0; i < WIL_STA_TID_NUM; i++) { 194 struct wil_tid_ampdu_rx *r; 195 196 spin_lock_bh(&sta->tid_rx_lock); 197 198 r = sta->tid_rx[i]; 199 sta->tid_rx[i] = NULL; 200 wil_tid_ampdu_rx_free(wil, r); 201 202 spin_unlock_bh(&sta->tid_rx_lock); 203 } 204 /* crypto context */ 205 memset(sta->tid_crypto_rx, 0, sizeof(sta->tid_crypto_rx)); 206 memset(&sta->group_crypto_rx, 0, sizeof(sta->group_crypto_rx)); 207 /* release vrings */ 208 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 209 if (wil->vring2cid_tid[i][0] == cid) 210 wil_vring_fini_tx(wil, i); 211 } 212 /* statistics */ 213 memset(&sta->stats, 0, sizeof(sta->stats)); 214 } 215 216 static bool wil_ap_is_connected(struct wil6210_priv *wil) 217 { 218 int i; 219 220 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 221 if (wil->sta[i].status == wil_sta_connected) 222 return true; 223 } 224 225 return false; 226 } 227 228 static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 229 u16 reason_code, bool from_event) 230 { 231 int cid = -ENOENT; 232 struct net_device *ndev = wil_to_ndev(wil); 233 struct wireless_dev *wdev = wil->wdev; 234 235 if (unlikely(!ndev)) 236 return; 237 238 might_sleep(); 239 wil_info(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid, 240 reason_code, from_event ? "+" : "-"); 241 242 /* Cases are: 243 * - disconnect single STA, still connected 244 * - disconnect single STA, already disconnected 245 * - disconnect all 246 * 247 * For "disconnect all", there are 3 options: 248 * - bssid == NULL 249 * - bssid is broadcast address (ff:ff:ff:ff:ff:ff) 250 * - bssid is our MAC address 251 */ 252 if (bssid && !is_broadcast_ether_addr(bssid) && 253 !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) { 254 cid = wil_find_cid(wil, bssid); 255 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 256 bssid, cid, reason_code); 257 if (cid >= 0) /* disconnect 1 peer */ 258 wil_disconnect_cid(wil, cid, reason_code, from_event); 259 } else { /* all */ 260 wil_dbg_misc(wil, "Disconnect all\n"); 261 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 262 wil_disconnect_cid(wil, cid, reason_code, from_event); 263 } 264 265 /* link state */ 266 switch (wdev->iftype) { 267 case NL80211_IFTYPE_STATION: 268 case NL80211_IFTYPE_P2P_CLIENT: 269 wil_bcast_fini(wil); 270 netif_tx_stop_all_queues(ndev); 271 netif_carrier_off(ndev); 272 273 if (test_bit(wil_status_fwconnected, wil->status)) { 274 clear_bit(wil_status_fwconnected, wil->status); 275 cfg80211_disconnected(ndev, reason_code, 276 NULL, 0, false, GFP_KERNEL); 277 } else if (test_bit(wil_status_fwconnecting, wil->status)) { 278 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 279 WLAN_STATUS_UNSPECIFIED_FAILURE, 280 GFP_KERNEL); 281 } 282 clear_bit(wil_status_fwconnecting, wil->status); 283 break; 284 case NL80211_IFTYPE_AP: 285 case NL80211_IFTYPE_P2P_GO: 286 if (!wil_ap_is_connected(wil)) 287 clear_bit(wil_status_fwconnected, wil->status); 288 break; 289 default: 290 break; 291 } 292 } 293 294 static void wil_disconnect_worker(struct work_struct *work) 295 { 296 struct wil6210_priv *wil = container_of(work, 297 struct wil6210_priv, disconnect_worker); 298 299 mutex_lock(&wil->mutex); 300 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false); 301 mutex_unlock(&wil->mutex); 302 } 303 304 static void wil_connect_timer_fn(ulong x) 305 { 306 struct wil6210_priv *wil = (void *)x; 307 bool q; 308 309 wil_err(wil, "Connect timeout detected, disconnect station\n"); 310 311 /* reschedule to thread context - disconnect won't 312 * run from atomic context. 313 * queue on wmi_wq to prevent race with connect event. 314 */ 315 q = queue_work(wil->wmi_wq, &wil->disconnect_worker); 316 wil_dbg_wmi(wil, "queue_work of disconnect_worker -> %d\n", q); 317 } 318 319 static void wil_scan_timer_fn(ulong x) 320 { 321 struct wil6210_priv *wil = (void *)x; 322 323 clear_bit(wil_status_fwready, wil->status); 324 wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 325 wil_fw_error_recovery(wil); 326 } 327 328 static int wil_wait_for_recovery(struct wil6210_priv *wil) 329 { 330 if (wait_event_interruptible(wil->wq, wil->recovery_state != 331 fw_recovery_pending)) { 332 wil_err(wil, "Interrupt, canceling recovery\n"); 333 return -ERESTARTSYS; 334 } 335 if (wil->recovery_state != fw_recovery_running) { 336 wil_info(wil, "Recovery cancelled\n"); 337 return -EINTR; 338 } 339 wil_info(wil, "Proceed with recovery\n"); 340 return 0; 341 } 342 343 void wil_set_recovery_state(struct wil6210_priv *wil, int state) 344 { 345 wil_dbg_misc(wil, "%s(%d -> %d)\n", __func__, 346 wil->recovery_state, state); 347 348 wil->recovery_state = state; 349 wake_up_interruptible(&wil->wq); 350 } 351 352 bool wil_is_recovery_blocked(struct wil6210_priv *wil) 353 { 354 return no_fw_recovery && (wil->recovery_state == fw_recovery_pending); 355 } 356 357 static void wil_fw_error_worker(struct work_struct *work) 358 { 359 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 360 fw_error_worker); 361 struct wireless_dev *wdev = wil->wdev; 362 363 wil_dbg_misc(wil, "fw error worker\n"); 364 365 if (!netif_running(wil_to_ndev(wil))) { 366 wil_info(wil, "No recovery - interface is down\n"); 367 return; 368 } 369 370 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 371 * passed since last recovery attempt 372 */ 373 if (time_is_after_jiffies(wil->last_fw_recovery + 374 WIL6210_FW_RECOVERY_TO)) 375 wil->recovery_count++; 376 else 377 wil->recovery_count = 1; /* fw was alive for a long time */ 378 379 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 380 wil_err(wil, "too many recovery attempts (%d), giving up\n", 381 wil->recovery_count); 382 return; 383 } 384 385 wil->last_fw_recovery = jiffies; 386 387 mutex_lock(&wil->mutex); 388 switch (wdev->iftype) { 389 case NL80211_IFTYPE_STATION: 390 case NL80211_IFTYPE_P2P_CLIENT: 391 case NL80211_IFTYPE_MONITOR: 392 wil_info(wil, "fw error recovery requested (try %d)...\n", 393 wil->recovery_count); 394 if (!no_fw_recovery) 395 wil->recovery_state = fw_recovery_running; 396 if (0 != wil_wait_for_recovery(wil)) 397 break; 398 399 __wil_down(wil); 400 __wil_up(wil); 401 break; 402 case NL80211_IFTYPE_AP: 403 case NL80211_IFTYPE_P2P_GO: 404 wil_info(wil, "No recovery for AP-like interface\n"); 405 /* recovery in these modes is done by upper layers */ 406 break; 407 default: 408 wil_err(wil, "No recovery - unknown interface type %d\n", 409 wdev->iftype); 410 break; 411 } 412 mutex_unlock(&wil->mutex); 413 } 414 415 static int wil_find_free_vring(struct wil6210_priv *wil) 416 { 417 int i; 418 419 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 420 if (!wil->vring_tx[i].va) 421 return i; 422 } 423 return -EINVAL; 424 } 425 426 int wil_tx_init(struct wil6210_priv *wil, int cid) 427 { 428 int rc = -EINVAL, ringid; 429 430 if (cid < 0) { 431 wil_err(wil, "No connection pending\n"); 432 goto out; 433 } 434 ringid = wil_find_free_vring(wil); 435 if (ringid < 0) { 436 wil_err(wil, "No free vring found\n"); 437 goto out; 438 } 439 440 wil_dbg_wmi(wil, "Configure for connection CID %d vring %d\n", 441 cid, ringid); 442 443 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); 444 if (rc) 445 wil_err(wil, "wil_vring_init_tx for CID %d vring %d failed\n", 446 cid, ringid); 447 448 out: 449 return rc; 450 } 451 452 int wil_bcast_init(struct wil6210_priv *wil) 453 { 454 int ri = wil->bcast_vring, rc; 455 456 if ((ri >= 0) && wil->vring_tx[ri].va) 457 return 0; 458 459 ri = wil_find_free_vring(wil); 460 if (ri < 0) 461 return ri; 462 463 wil->bcast_vring = ri; 464 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order); 465 if (rc) 466 wil->bcast_vring = -1; 467 468 return rc; 469 } 470 471 void wil_bcast_fini(struct wil6210_priv *wil) 472 { 473 int ri = wil->bcast_vring; 474 475 if (ri < 0) 476 return; 477 478 wil->bcast_vring = -1; 479 wil_vring_fini_tx(wil, ri); 480 } 481 482 int wil_priv_init(struct wil6210_priv *wil) 483 { 484 uint i; 485 486 wil_dbg_misc(wil, "%s()\n", __func__); 487 488 memset(wil->sta, 0, sizeof(wil->sta)); 489 for (i = 0; i < WIL6210_MAX_CID; i++) 490 spin_lock_init(&wil->sta[i].tid_rx_lock); 491 492 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) 493 spin_lock_init(&wil->vring_tx_data[i].lock); 494 495 mutex_init(&wil->mutex); 496 mutex_init(&wil->wmi_mutex); 497 mutex_init(&wil->probe_client_mutex); 498 mutex_init(&wil->p2p_wdev_mutex); 499 mutex_init(&wil->halp.lock); 500 501 init_completion(&wil->wmi_ready); 502 init_completion(&wil->wmi_call); 503 init_completion(&wil->halp.comp); 504 505 wil->bcast_vring = -1; 506 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 507 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 508 setup_timer(&wil->p2p.discovery_timer, wil_p2p_discovery_timer_fn, 509 (ulong)wil); 510 511 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 512 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 513 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 514 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker); 515 516 INIT_LIST_HEAD(&wil->pending_wmi_ev); 517 INIT_LIST_HEAD(&wil->probe_client_pending); 518 spin_lock_init(&wil->wmi_ev_lock); 519 init_waitqueue_head(&wil->wq); 520 521 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 522 if (!wil->wmi_wq) 523 return -EAGAIN; 524 525 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 526 if (!wil->wq_service) 527 goto out_wmi_wq; 528 529 wil->last_fw_recovery = jiffies; 530 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 531 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 532 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 533 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 534 535 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 536 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 537 return 0; 538 539 out_wmi_wq: 540 destroy_workqueue(wil->wmi_wq); 541 542 return -EAGAIN; 543 } 544 545 /** 546 * wil6210_disconnect - disconnect one connection 547 * @wil: driver context 548 * @bssid: peer to disconnect, NULL to disconnect all 549 * @reason_code: Reason code for the Disassociation frame 550 * @from_event: whether is invoked from FW event handler 551 * 552 * Disconnect and release associated resources. If invoked not from the 553 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 554 */ 555 void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 556 u16 reason_code, bool from_event) 557 { 558 wil_dbg_misc(wil, "%s()\n", __func__); 559 560 del_timer_sync(&wil->connect_timer); 561 _wil6210_disconnect(wil, bssid, reason_code, from_event); 562 } 563 564 void wil_priv_deinit(struct wil6210_priv *wil) 565 { 566 wil_dbg_misc(wil, "%s()\n", __func__); 567 568 wil_set_recovery_state(wil, fw_recovery_idle); 569 del_timer_sync(&wil->scan_timer); 570 del_timer_sync(&wil->p2p.discovery_timer); 571 cancel_work_sync(&wil->disconnect_worker); 572 cancel_work_sync(&wil->fw_error_worker); 573 cancel_work_sync(&wil->p2p.discovery_expired_work); 574 mutex_lock(&wil->mutex); 575 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 576 mutex_unlock(&wil->mutex); 577 wmi_event_flush(wil); 578 wil_probe_client_flush(wil); 579 cancel_work_sync(&wil->probe_client_worker); 580 destroy_workqueue(wil->wq_service); 581 destroy_workqueue(wil->wmi_wq); 582 } 583 584 static inline void wil_halt_cpu(struct wil6210_priv *wil) 585 { 586 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 587 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 588 } 589 590 static inline void wil_release_cpu(struct wil6210_priv *wil) 591 { 592 /* Start CPU */ 593 wil_w(wil, RGF_USER_USER_CPU_0, 1); 594 } 595 596 static void wil_set_oob_mode(struct wil6210_priv *wil, bool enable) 597 { 598 wil_info(wil, "%s: enable=%d\n", __func__, enable); 599 if (enable) 600 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 601 else 602 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 603 } 604 605 static int wil_target_reset(struct wil6210_priv *wil) 606 { 607 int delay = 0; 608 u32 x, x1 = 0; 609 610 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 611 612 /* Clear MAC link up */ 613 wil_s(wil, RGF_HP_CTRL, BIT(15)); 614 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 615 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 616 617 wil_halt_cpu(wil); 618 619 /* clear all boot loader "ready" bits */ 620 wil_w(wil, RGF_USER_BL + 621 offsetof(struct bl_dedicated_registers_v0, boot_loader_ready), 0); 622 /* Clear Fw Download notification */ 623 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 624 625 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 626 /* XTAL stabilization should take about 3ms */ 627 usleep_range(5000, 7000); 628 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 629 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 630 wil_err(wil, "Xtal stabilization timeout\n" 631 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 632 return -ETIME; 633 } 634 /* switch 10k to XTAL*/ 635 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 636 /* 40 MHz */ 637 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 638 639 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 640 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 641 642 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 643 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 644 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 645 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 646 647 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 648 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 649 650 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 651 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 652 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 653 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 654 655 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 656 /* reset A2 PCIE AHB */ 657 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 658 659 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 660 661 /* wait until device ready. typical time is 20..80 msec */ 662 do { 663 msleep(RST_DELAY); 664 x = wil_r(wil, RGF_USER_BL + 665 offsetof(struct bl_dedicated_registers_v0, 666 boot_loader_ready)); 667 if (x1 != x) { 668 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x); 669 x1 = x; 670 } 671 if (delay++ > RST_COUNT) { 672 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 673 x); 674 return -ETIME; 675 } 676 } while (x != BL_READY); 677 678 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 679 680 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 681 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 682 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 683 684 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 685 return 0; 686 } 687 688 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 689 { 690 le32_to_cpus(&r->base); 691 le16_to_cpus(&r->entry_size); 692 le16_to_cpus(&r->size); 693 le32_to_cpus(&r->tail); 694 le32_to_cpus(&r->head); 695 } 696 697 static int wil_get_bl_info(struct wil6210_priv *wil) 698 { 699 struct net_device *ndev = wil_to_ndev(wil); 700 struct wiphy *wiphy = wil_to_wiphy(wil); 701 union { 702 struct bl_dedicated_registers_v0 bl0; 703 struct bl_dedicated_registers_v1 bl1; 704 } bl; 705 u32 bl_ver; 706 u8 *mac; 707 u16 rf_status; 708 709 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 710 sizeof(bl)); 711 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 712 mac = bl.bl0.mac_address; 713 714 if (bl_ver == 0) { 715 le32_to_cpus(&bl.bl0.rf_type); 716 le32_to_cpus(&bl.bl0.baseband_type); 717 rf_status = 0; /* actually, unknown */ 718 wil_info(wil, 719 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 720 bl_ver, mac, 721 bl.bl0.rf_type, bl.bl0.baseband_type); 722 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 723 } else { 724 le16_to_cpus(&bl.bl1.rf_type); 725 rf_status = le16_to_cpu(bl.bl1.rf_status); 726 le32_to_cpus(&bl.bl1.baseband_type); 727 le16_to_cpus(&bl.bl1.bl_version_subminor); 728 le16_to_cpus(&bl.bl1.bl_version_build); 729 wil_info(wil, 730 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 731 bl_ver, mac, 732 bl.bl1.rf_type, rf_status, 733 bl.bl1.baseband_type); 734 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 735 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 736 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 737 } 738 739 if (!is_valid_ether_addr(mac)) { 740 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 741 return -EINVAL; 742 } 743 744 ether_addr_copy(ndev->perm_addr, mac); 745 ether_addr_copy(wiphy->perm_addr, mac); 746 if (!is_valid_ether_addr(ndev->dev_addr)) 747 ether_addr_copy(ndev->dev_addr, mac); 748 749 if (rf_status) {/* bad RF cable? */ 750 wil_err(wil, "RF communication error 0x%04x", 751 rf_status); 752 return -EAGAIN; 753 } 754 755 return 0; 756 } 757 758 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 759 { 760 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 761 u32 bl_ver = wil_r(wil, RGF_USER_BL + 762 offsetof(struct bl_dedicated_registers_v0, 763 boot_loader_struct_version)); 764 765 if (bl_ver < 2) 766 return; 767 768 bl_assert_code = wil_r(wil, RGF_USER_BL + 769 offsetof(struct bl_dedicated_registers_v1, 770 bl_assert_code)); 771 bl_assert_blink = wil_r(wil, RGF_USER_BL + 772 offsetof(struct bl_dedicated_registers_v1, 773 bl_assert_blink)); 774 bl_magic_number = wil_r(wil, RGF_USER_BL + 775 offsetof(struct bl_dedicated_registers_v1, 776 bl_magic_number)); 777 778 if (is_err) { 779 wil_err(wil, 780 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 781 bl_assert_code, bl_assert_blink, bl_magic_number); 782 } else { 783 wil_dbg_misc(wil, 784 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 785 bl_assert_code, bl_assert_blink, bl_magic_number); 786 } 787 } 788 789 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 790 { 791 ulong to = msecs_to_jiffies(1000); 792 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 793 794 if (0 == left) { 795 wil_err(wil, "Firmware not ready\n"); 796 return -ETIME; 797 } else { 798 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 799 jiffies_to_msecs(to-left), wil->hw_version); 800 } 801 return 0; 802 } 803 804 /* 805 * We reset all the structures, and we reset the UMAC. 806 * After calling this routine, you're expected to reload 807 * the firmware. 808 */ 809 int wil_reset(struct wil6210_priv *wil, bool load_fw) 810 { 811 int rc; 812 813 wil_dbg_misc(wil, "%s()\n", __func__); 814 815 WARN_ON(!mutex_is_locked(&wil->mutex)); 816 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 817 818 if (debug_fw) { 819 static const u8 mac[ETH_ALEN] = { 820 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 821 }; 822 struct net_device *ndev = wil_to_ndev(wil); 823 824 ether_addr_copy(ndev->perm_addr, mac); 825 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 826 return 0; 827 } 828 829 if (wil->hw_version == HW_VER_UNKNOWN) 830 return -ENODEV; 831 832 if (wil->platform_ops.notify) { 833 rc = wil->platform_ops.notify(wil->platform_handle, 834 WIL_PLATFORM_EVT_PRE_RESET); 835 if (rc) 836 wil_err(wil, 837 "%s: PRE_RESET platform notify failed, rc %d\n", 838 __func__, rc); 839 } 840 841 set_bit(wil_status_resetting, wil->status); 842 843 cancel_work_sync(&wil->disconnect_worker); 844 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 845 wil_bcast_fini(wil); 846 847 /* Disable device led before reset*/ 848 wmi_led_cfg(wil, false); 849 850 /* prevent NAPI from being scheduled and prevent wmi commands */ 851 mutex_lock(&wil->wmi_mutex); 852 bitmap_zero(wil->status, wil_status_last); 853 mutex_unlock(&wil->wmi_mutex); 854 855 mutex_lock(&wil->p2p_wdev_mutex); 856 if (wil->scan_request) { 857 struct cfg80211_scan_info info = { 858 .aborted = true, 859 }; 860 861 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 862 wil->scan_request); 863 del_timer_sync(&wil->scan_timer); 864 cfg80211_scan_done(wil->scan_request, &info); 865 wil->scan_request = NULL; 866 } 867 mutex_unlock(&wil->p2p_wdev_mutex); 868 869 wil_mask_irq(wil); 870 871 wmi_event_flush(wil); 872 873 flush_workqueue(wil->wq_service); 874 flush_workqueue(wil->wmi_wq); 875 876 wil_bl_crash_info(wil, false); 877 rc = wil_target_reset(wil); 878 wil_rx_fini(wil); 879 if (rc) { 880 wil_bl_crash_info(wil, true); 881 return rc; 882 } 883 884 rc = wil_get_bl_info(wil); 885 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */ 886 rc = 0; 887 if (rc) 888 return rc; 889 890 wil_set_oob_mode(wil, oob_mode); 891 if (load_fw) { 892 wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME, 893 WIL_FW2_NAME); 894 895 wil_halt_cpu(wil); 896 memset(wil->fw_version, 0, sizeof(wil->fw_version)); 897 /* Loading f/w from the file */ 898 rc = wil_request_firmware(wil, WIL_FW_NAME, true); 899 if (rc) 900 return rc; 901 rc = wil_request_firmware(wil, WIL_FW2_NAME, true); 902 if (rc) 903 return rc; 904 905 /* Mark FW as loaded from host */ 906 wil_s(wil, RGF_USER_USAGE_6, 1); 907 908 /* clear any interrupts which on-card-firmware 909 * may have set 910 */ 911 wil6210_clear_irq(wil); 912 /* CAF_ICR - clear and mask */ 913 /* it is W1C, clear by writing back same value */ 914 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 915 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 916 917 wil_release_cpu(wil); 918 } 919 920 /* init after reset */ 921 wil->ap_isolate = 0; 922 reinit_completion(&wil->wmi_ready); 923 reinit_completion(&wil->wmi_call); 924 reinit_completion(&wil->halp.comp); 925 926 if (load_fw) { 927 wil_configure_interrupt_moderation(wil); 928 wil_unmask_irq(wil); 929 930 /* we just started MAC, wait for FW ready */ 931 rc = wil_wait_for_fw_ready(wil); 932 if (rc) 933 return rc; 934 935 /* check FW is responsive */ 936 rc = wmi_echo(wil); 937 if (rc) { 938 wil_err(wil, "%s: wmi_echo failed, rc %d\n", 939 __func__, rc); 940 return rc; 941 } 942 943 if (wil->platform_ops.notify) { 944 rc = wil->platform_ops.notify(wil->platform_handle, 945 WIL_PLATFORM_EVT_FW_RDY); 946 if (rc) { 947 wil_err(wil, 948 "%s: FW_RDY notify failed, rc %d\n", 949 __func__, rc); 950 rc = 0; 951 } 952 } 953 } 954 955 return rc; 956 } 957 958 void wil_fw_error_recovery(struct wil6210_priv *wil) 959 { 960 wil_dbg_misc(wil, "starting fw error recovery\n"); 961 962 if (test_bit(wil_status_resetting, wil->status)) { 963 wil_info(wil, "Reset already in progress\n"); 964 return; 965 } 966 967 wil->recovery_state = fw_recovery_pending; 968 schedule_work(&wil->fw_error_worker); 969 } 970 971 int __wil_up(struct wil6210_priv *wil) 972 { 973 struct net_device *ndev = wil_to_ndev(wil); 974 struct wireless_dev *wdev = wil->wdev; 975 int rc; 976 977 WARN_ON(!mutex_is_locked(&wil->mutex)); 978 979 rc = wil_reset(wil, true); 980 if (rc) 981 return rc; 982 983 /* Rx VRING. After MAC and beacon */ 984 rc = wil_rx_init(wil, 1 << rx_ring_order); 985 if (rc) 986 return rc; 987 988 switch (wdev->iftype) { 989 case NL80211_IFTYPE_STATION: 990 wil_dbg_misc(wil, "type: STATION\n"); 991 ndev->type = ARPHRD_ETHER; 992 break; 993 case NL80211_IFTYPE_AP: 994 wil_dbg_misc(wil, "type: AP\n"); 995 ndev->type = ARPHRD_ETHER; 996 break; 997 case NL80211_IFTYPE_P2P_CLIENT: 998 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 999 ndev->type = ARPHRD_ETHER; 1000 break; 1001 case NL80211_IFTYPE_P2P_GO: 1002 wil_dbg_misc(wil, "type: P2P_GO\n"); 1003 ndev->type = ARPHRD_ETHER; 1004 break; 1005 case NL80211_IFTYPE_MONITOR: 1006 wil_dbg_misc(wil, "type: Monitor\n"); 1007 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 1008 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 1009 break; 1010 default: 1011 return -EOPNOTSUPP; 1012 } 1013 1014 /* MAC address - pre-requisite for other commands */ 1015 wmi_set_mac_address(wil, ndev->dev_addr); 1016 1017 wil_dbg_misc(wil, "NAPI enable\n"); 1018 napi_enable(&wil->napi_rx); 1019 napi_enable(&wil->napi_tx); 1020 set_bit(wil_status_napi_en, wil->status); 1021 1022 if (wil->platform_ops.bus_request) 1023 wil->platform_ops.bus_request(wil->platform_handle, 1024 WIL_MAX_BUS_REQUEST_KBPS); 1025 1026 return 0; 1027 } 1028 1029 int wil_up(struct wil6210_priv *wil) 1030 { 1031 int rc; 1032 1033 wil_dbg_misc(wil, "%s()\n", __func__); 1034 1035 mutex_lock(&wil->mutex); 1036 rc = __wil_up(wil); 1037 mutex_unlock(&wil->mutex); 1038 1039 return rc; 1040 } 1041 1042 int __wil_down(struct wil6210_priv *wil) 1043 { 1044 WARN_ON(!mutex_is_locked(&wil->mutex)); 1045 1046 set_bit(wil_status_resetting, wil->status); 1047 1048 if (wil->platform_ops.bus_request) 1049 wil->platform_ops.bus_request(wil->platform_handle, 0); 1050 1051 wil_disable_irq(wil); 1052 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 1053 napi_disable(&wil->napi_rx); 1054 napi_disable(&wil->napi_tx); 1055 wil_dbg_misc(wil, "NAPI disable\n"); 1056 } 1057 wil_enable_irq(wil); 1058 1059 wil_p2p_stop_radio_operations(wil); 1060 1061 mutex_lock(&wil->p2p_wdev_mutex); 1062 if (wil->scan_request) { 1063 struct cfg80211_scan_info info = { 1064 .aborted = true, 1065 }; 1066 1067 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 1068 wil->scan_request); 1069 del_timer_sync(&wil->scan_timer); 1070 cfg80211_scan_done(wil->scan_request, &info); 1071 wil->scan_request = NULL; 1072 } 1073 mutex_unlock(&wil->p2p_wdev_mutex); 1074 1075 wil_reset(wil, false); 1076 1077 return 0; 1078 } 1079 1080 int wil_down(struct wil6210_priv *wil) 1081 { 1082 int rc; 1083 1084 wil_dbg_misc(wil, "%s()\n", __func__); 1085 1086 wil_set_recovery_state(wil, fw_recovery_idle); 1087 mutex_lock(&wil->mutex); 1088 rc = __wil_down(wil); 1089 mutex_unlock(&wil->mutex); 1090 1091 return rc; 1092 } 1093 1094 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 1095 { 1096 int i; 1097 int rc = -ENOENT; 1098 1099 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1100 if ((wil->sta[i].status != wil_sta_unused) && 1101 ether_addr_equal(wil->sta[i].addr, mac)) { 1102 rc = i; 1103 break; 1104 } 1105 } 1106 1107 return rc; 1108 } 1109 1110 void wil_halp_vote(struct wil6210_priv *wil) 1111 { 1112 unsigned long rc; 1113 unsigned long to_jiffies = msecs_to_jiffies(WAIT_FOR_HALP_VOTE_MS); 1114 1115 mutex_lock(&wil->halp.lock); 1116 1117 wil_dbg_irq(wil, "%s: start, HALP ref_cnt (%d)\n", __func__, 1118 wil->halp.ref_cnt); 1119 1120 if (++wil->halp.ref_cnt == 1) { 1121 wil6210_set_halp(wil); 1122 rc = wait_for_completion_timeout(&wil->halp.comp, to_jiffies); 1123 if (!rc) { 1124 wil_err(wil, "%s: HALP vote timed out\n", __func__); 1125 /* Mask HALP as done in case the interrupt is raised */ 1126 wil6210_mask_halp(wil); 1127 } else { 1128 wil_dbg_irq(wil, 1129 "%s: HALP vote completed after %d ms\n", 1130 __func__, 1131 jiffies_to_msecs(to_jiffies - rc)); 1132 } 1133 } 1134 1135 wil_dbg_irq(wil, "%s: end, HALP ref_cnt (%d)\n", __func__, 1136 wil->halp.ref_cnt); 1137 1138 mutex_unlock(&wil->halp.lock); 1139 } 1140 1141 void wil_halp_unvote(struct wil6210_priv *wil) 1142 { 1143 WARN_ON(wil->halp.ref_cnt == 0); 1144 1145 mutex_lock(&wil->halp.lock); 1146 1147 wil_dbg_irq(wil, "%s: start, HALP ref_cnt (%d)\n", __func__, 1148 wil->halp.ref_cnt); 1149 1150 if (--wil->halp.ref_cnt == 0) { 1151 wil6210_clear_halp(wil); 1152 wil_dbg_irq(wil, "%s: HALP unvote\n", __func__); 1153 } 1154 1155 wil_dbg_irq(wil, "%s: end, HALP ref_cnt (%d)\n", __func__, 1156 wil->halp.ref_cnt); 1157 1158 mutex_unlock(&wil->halp.lock); 1159 } 1160