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 might_sleep(); 236 wil_info(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid, 237 reason_code, from_event ? "+" : "-"); 238 239 /* Cases are: 240 * - disconnect single STA, still connected 241 * - disconnect single STA, already disconnected 242 * - disconnect all 243 * 244 * For "disconnect all", there are 3 options: 245 * - bssid == NULL 246 * - bssid is broadcast address (ff:ff:ff:ff:ff:ff) 247 * - bssid is our MAC address 248 */ 249 if (bssid && !is_broadcast_ether_addr(bssid) && 250 !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) { 251 cid = wil_find_cid(wil, bssid); 252 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 253 bssid, cid, reason_code); 254 if (cid >= 0) /* disconnect 1 peer */ 255 wil_disconnect_cid(wil, cid, reason_code, from_event); 256 } else { /* all */ 257 wil_dbg_misc(wil, "Disconnect all\n"); 258 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 259 wil_disconnect_cid(wil, cid, reason_code, from_event); 260 } 261 262 /* link state */ 263 switch (wdev->iftype) { 264 case NL80211_IFTYPE_STATION: 265 case NL80211_IFTYPE_P2P_CLIENT: 266 wil_bcast_fini(wil); 267 netif_tx_stop_all_queues(ndev); 268 netif_carrier_off(ndev); 269 270 if (test_bit(wil_status_fwconnected, wil->status)) { 271 clear_bit(wil_status_fwconnected, wil->status); 272 cfg80211_disconnected(ndev, reason_code, 273 NULL, 0, false, GFP_KERNEL); 274 } else if (test_bit(wil_status_fwconnecting, wil->status)) { 275 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 276 WLAN_STATUS_UNSPECIFIED_FAILURE, 277 GFP_KERNEL); 278 } 279 clear_bit(wil_status_fwconnecting, wil->status); 280 break; 281 case NL80211_IFTYPE_AP: 282 case NL80211_IFTYPE_P2P_GO: 283 if (!wil_ap_is_connected(wil)) 284 clear_bit(wil_status_fwconnected, wil->status); 285 break; 286 default: 287 break; 288 } 289 } 290 291 static void wil_disconnect_worker(struct work_struct *work) 292 { 293 struct wil6210_priv *wil = container_of(work, 294 struct wil6210_priv, disconnect_worker); 295 296 mutex_lock(&wil->mutex); 297 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false); 298 mutex_unlock(&wil->mutex); 299 } 300 301 static void wil_connect_timer_fn(ulong x) 302 { 303 struct wil6210_priv *wil = (void *)x; 304 bool q; 305 306 wil_err(wil, "Connect timeout detected, disconnect station\n"); 307 308 /* reschedule to thread context - disconnect won't 309 * run from atomic context. 310 * queue on wmi_wq to prevent race with connect event. 311 */ 312 q = queue_work(wil->wmi_wq, &wil->disconnect_worker); 313 wil_dbg_wmi(wil, "queue_work of disconnect_worker -> %d\n", q); 314 } 315 316 static void wil_scan_timer_fn(ulong x) 317 { 318 struct wil6210_priv *wil = (void *)x; 319 320 clear_bit(wil_status_fwready, wil->status); 321 wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 322 wil_fw_error_recovery(wil); 323 } 324 325 static int wil_wait_for_recovery(struct wil6210_priv *wil) 326 { 327 if (wait_event_interruptible(wil->wq, wil->recovery_state != 328 fw_recovery_pending)) { 329 wil_err(wil, "Interrupt, canceling recovery\n"); 330 return -ERESTARTSYS; 331 } 332 if (wil->recovery_state != fw_recovery_running) { 333 wil_info(wil, "Recovery cancelled\n"); 334 return -EINTR; 335 } 336 wil_info(wil, "Proceed with recovery\n"); 337 return 0; 338 } 339 340 void wil_set_recovery_state(struct wil6210_priv *wil, int state) 341 { 342 wil_dbg_misc(wil, "%s(%d -> %d)\n", __func__, 343 wil->recovery_state, state); 344 345 wil->recovery_state = state; 346 wake_up_interruptible(&wil->wq); 347 } 348 349 bool wil_is_recovery_blocked(struct wil6210_priv *wil) 350 { 351 return no_fw_recovery && (wil->recovery_state == fw_recovery_pending); 352 } 353 354 static void wil_fw_error_worker(struct work_struct *work) 355 { 356 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 357 fw_error_worker); 358 struct wireless_dev *wdev = wil->wdev; 359 360 wil_dbg_misc(wil, "fw error worker\n"); 361 362 if (!netif_running(wil_to_ndev(wil))) { 363 wil_info(wil, "No recovery - interface is down\n"); 364 return; 365 } 366 367 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 368 * passed since last recovery attempt 369 */ 370 if (time_is_after_jiffies(wil->last_fw_recovery + 371 WIL6210_FW_RECOVERY_TO)) 372 wil->recovery_count++; 373 else 374 wil->recovery_count = 1; /* fw was alive for a long time */ 375 376 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 377 wil_err(wil, "too many recovery attempts (%d), giving up\n", 378 wil->recovery_count); 379 return; 380 } 381 382 wil->last_fw_recovery = jiffies; 383 384 mutex_lock(&wil->mutex); 385 switch (wdev->iftype) { 386 case NL80211_IFTYPE_STATION: 387 case NL80211_IFTYPE_P2P_CLIENT: 388 case NL80211_IFTYPE_MONITOR: 389 wil_info(wil, "fw error recovery requested (try %d)...\n", 390 wil->recovery_count); 391 if (!no_fw_recovery) 392 wil->recovery_state = fw_recovery_running; 393 if (0 != wil_wait_for_recovery(wil)) 394 break; 395 396 __wil_down(wil); 397 __wil_up(wil); 398 break; 399 case NL80211_IFTYPE_AP: 400 case NL80211_IFTYPE_P2P_GO: 401 wil_info(wil, "No recovery for AP-like interface\n"); 402 /* recovery in these modes is done by upper layers */ 403 break; 404 default: 405 wil_err(wil, "No recovery - unknown interface type %d\n", 406 wdev->iftype); 407 break; 408 } 409 mutex_unlock(&wil->mutex); 410 } 411 412 static int wil_find_free_vring(struct wil6210_priv *wil) 413 { 414 int i; 415 416 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 417 if (!wil->vring_tx[i].va) 418 return i; 419 } 420 return -EINVAL; 421 } 422 423 int wil_tx_init(struct wil6210_priv *wil, int cid) 424 { 425 int rc = -EINVAL, ringid; 426 427 if (cid < 0) { 428 wil_err(wil, "No connection pending\n"); 429 goto out; 430 } 431 ringid = wil_find_free_vring(wil); 432 if (ringid < 0) { 433 wil_err(wil, "No free vring found\n"); 434 goto out; 435 } 436 437 wil_dbg_wmi(wil, "Configure for connection CID %d vring %d\n", 438 cid, ringid); 439 440 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); 441 if (rc) 442 wil_err(wil, "wil_vring_init_tx for CID %d vring %d failed\n", 443 cid, ringid); 444 445 out: 446 return rc; 447 } 448 449 int wil_bcast_init(struct wil6210_priv *wil) 450 { 451 int ri = wil->bcast_vring, rc; 452 453 if ((ri >= 0) && wil->vring_tx[ri].va) 454 return 0; 455 456 ri = wil_find_free_vring(wil); 457 if (ri < 0) 458 return ri; 459 460 wil->bcast_vring = ri; 461 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order); 462 if (rc) 463 wil->bcast_vring = -1; 464 465 return rc; 466 } 467 468 void wil_bcast_fini(struct wil6210_priv *wil) 469 { 470 int ri = wil->bcast_vring; 471 472 if (ri < 0) 473 return; 474 475 wil->bcast_vring = -1; 476 wil_vring_fini_tx(wil, ri); 477 } 478 479 int wil_priv_init(struct wil6210_priv *wil) 480 { 481 uint i; 482 483 wil_dbg_misc(wil, "%s()\n", __func__); 484 485 memset(wil->sta, 0, sizeof(wil->sta)); 486 for (i = 0; i < WIL6210_MAX_CID; i++) 487 spin_lock_init(&wil->sta[i].tid_rx_lock); 488 489 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) 490 spin_lock_init(&wil->vring_tx_data[i].lock); 491 492 mutex_init(&wil->mutex); 493 mutex_init(&wil->wmi_mutex); 494 mutex_init(&wil->probe_client_mutex); 495 mutex_init(&wil->p2p_wdev_mutex); 496 mutex_init(&wil->halp.lock); 497 498 init_completion(&wil->wmi_ready); 499 init_completion(&wil->wmi_call); 500 init_completion(&wil->halp.comp); 501 502 wil->bcast_vring = -1; 503 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 504 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 505 setup_timer(&wil->p2p.discovery_timer, wil_p2p_discovery_timer_fn, 506 (ulong)wil); 507 508 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 509 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 510 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 511 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker); 512 513 INIT_LIST_HEAD(&wil->pending_wmi_ev); 514 INIT_LIST_HEAD(&wil->probe_client_pending); 515 spin_lock_init(&wil->wmi_ev_lock); 516 init_waitqueue_head(&wil->wq); 517 518 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 519 if (!wil->wmi_wq) 520 return -EAGAIN; 521 522 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 523 if (!wil->wq_service) 524 goto out_wmi_wq; 525 526 wil->last_fw_recovery = jiffies; 527 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 528 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 529 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 530 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 531 532 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 533 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 534 return 0; 535 536 out_wmi_wq: 537 destroy_workqueue(wil->wmi_wq); 538 539 return -EAGAIN; 540 } 541 542 /** 543 * wil6210_disconnect - disconnect one connection 544 * @wil: driver context 545 * @bssid: peer to disconnect, NULL to disconnect all 546 * @reason_code: Reason code for the Disassociation frame 547 * @from_event: whether is invoked from FW event handler 548 * 549 * Disconnect and release associated resources. If invoked not from the 550 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 551 */ 552 void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 553 u16 reason_code, bool from_event) 554 { 555 wil_dbg_misc(wil, "%s()\n", __func__); 556 557 del_timer_sync(&wil->connect_timer); 558 _wil6210_disconnect(wil, bssid, reason_code, from_event); 559 } 560 561 void wil_priv_deinit(struct wil6210_priv *wil) 562 { 563 wil_dbg_misc(wil, "%s()\n", __func__); 564 565 wil_set_recovery_state(wil, fw_recovery_idle); 566 del_timer_sync(&wil->scan_timer); 567 del_timer_sync(&wil->p2p.discovery_timer); 568 cancel_work_sync(&wil->disconnect_worker); 569 cancel_work_sync(&wil->fw_error_worker); 570 cancel_work_sync(&wil->p2p.discovery_expired_work); 571 mutex_lock(&wil->mutex); 572 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 573 mutex_unlock(&wil->mutex); 574 wmi_event_flush(wil); 575 wil_probe_client_flush(wil); 576 cancel_work_sync(&wil->probe_client_worker); 577 destroy_workqueue(wil->wq_service); 578 destroy_workqueue(wil->wmi_wq); 579 } 580 581 static inline void wil_halt_cpu(struct wil6210_priv *wil) 582 { 583 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 584 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 585 } 586 587 static inline void wil_release_cpu(struct wil6210_priv *wil) 588 { 589 /* Start CPU */ 590 wil_w(wil, RGF_USER_USER_CPU_0, 1); 591 } 592 593 static void wil_set_oob_mode(struct wil6210_priv *wil, bool enable) 594 { 595 wil_info(wil, "%s: enable=%d\n", __func__, enable); 596 if (enable) 597 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 598 else 599 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 600 } 601 602 static int wil_target_reset(struct wil6210_priv *wil) 603 { 604 int delay = 0; 605 u32 x, x1 = 0; 606 607 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 608 609 /* Clear MAC link up */ 610 wil_s(wil, RGF_HP_CTRL, BIT(15)); 611 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 612 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 613 614 wil_halt_cpu(wil); 615 616 /* clear all boot loader "ready" bits */ 617 wil_w(wil, RGF_USER_BL + 618 offsetof(struct bl_dedicated_registers_v0, boot_loader_ready), 0); 619 /* Clear Fw Download notification */ 620 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 621 622 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 623 /* XTAL stabilization should take about 3ms */ 624 usleep_range(5000, 7000); 625 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 626 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 627 wil_err(wil, "Xtal stabilization timeout\n" 628 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 629 return -ETIME; 630 } 631 /* switch 10k to XTAL*/ 632 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 633 /* 40 MHz */ 634 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 635 636 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 637 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 638 639 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 640 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 641 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 642 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 643 644 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 645 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 646 647 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 648 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 649 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 650 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 651 652 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 653 /* reset A2 PCIE AHB */ 654 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 655 656 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 657 658 /* wait until device ready. typical time is 20..80 msec */ 659 do { 660 msleep(RST_DELAY); 661 x = wil_r(wil, RGF_USER_BL + 662 offsetof(struct bl_dedicated_registers_v0, 663 boot_loader_ready)); 664 if (x1 != x) { 665 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x); 666 x1 = x; 667 } 668 if (delay++ > RST_COUNT) { 669 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 670 x); 671 return -ETIME; 672 } 673 } while (x != BL_READY); 674 675 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 676 677 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 678 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 679 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 680 681 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 682 return 0; 683 } 684 685 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 686 { 687 le32_to_cpus(&r->base); 688 le16_to_cpus(&r->entry_size); 689 le16_to_cpus(&r->size); 690 le32_to_cpus(&r->tail); 691 le32_to_cpus(&r->head); 692 } 693 694 static int wil_get_bl_info(struct wil6210_priv *wil) 695 { 696 struct net_device *ndev = wil_to_ndev(wil); 697 struct wiphy *wiphy = wil_to_wiphy(wil); 698 union { 699 struct bl_dedicated_registers_v0 bl0; 700 struct bl_dedicated_registers_v1 bl1; 701 } bl; 702 u32 bl_ver; 703 u8 *mac; 704 u16 rf_status; 705 706 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 707 sizeof(bl)); 708 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 709 mac = bl.bl0.mac_address; 710 711 if (bl_ver == 0) { 712 le32_to_cpus(&bl.bl0.rf_type); 713 le32_to_cpus(&bl.bl0.baseband_type); 714 rf_status = 0; /* actually, unknown */ 715 wil_info(wil, 716 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 717 bl_ver, mac, 718 bl.bl0.rf_type, bl.bl0.baseband_type); 719 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 720 } else { 721 le16_to_cpus(&bl.bl1.rf_type); 722 rf_status = le16_to_cpu(bl.bl1.rf_status); 723 le32_to_cpus(&bl.bl1.baseband_type); 724 le16_to_cpus(&bl.bl1.bl_version_subminor); 725 le16_to_cpus(&bl.bl1.bl_version_build); 726 wil_info(wil, 727 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 728 bl_ver, mac, 729 bl.bl1.rf_type, rf_status, 730 bl.bl1.baseband_type); 731 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 732 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 733 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 734 } 735 736 if (!is_valid_ether_addr(mac)) { 737 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 738 return -EINVAL; 739 } 740 741 ether_addr_copy(ndev->perm_addr, mac); 742 ether_addr_copy(wiphy->perm_addr, mac); 743 if (!is_valid_ether_addr(ndev->dev_addr)) 744 ether_addr_copy(ndev->dev_addr, mac); 745 746 if (rf_status) {/* bad RF cable? */ 747 wil_err(wil, "RF communication error 0x%04x", 748 rf_status); 749 return -EAGAIN; 750 } 751 752 return 0; 753 } 754 755 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 756 { 757 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 758 u32 bl_ver = wil_r(wil, RGF_USER_BL + 759 offsetof(struct bl_dedicated_registers_v0, 760 boot_loader_struct_version)); 761 762 if (bl_ver < 2) 763 return; 764 765 bl_assert_code = wil_r(wil, RGF_USER_BL + 766 offsetof(struct bl_dedicated_registers_v1, 767 bl_assert_code)); 768 bl_assert_blink = wil_r(wil, RGF_USER_BL + 769 offsetof(struct bl_dedicated_registers_v1, 770 bl_assert_blink)); 771 bl_magic_number = wil_r(wil, RGF_USER_BL + 772 offsetof(struct bl_dedicated_registers_v1, 773 bl_magic_number)); 774 775 if (is_err) { 776 wil_err(wil, 777 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 778 bl_assert_code, bl_assert_blink, bl_magic_number); 779 } else { 780 wil_dbg_misc(wil, 781 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 782 bl_assert_code, bl_assert_blink, bl_magic_number); 783 } 784 } 785 786 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 787 { 788 ulong to = msecs_to_jiffies(1000); 789 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 790 791 if (0 == left) { 792 wil_err(wil, "Firmware not ready\n"); 793 return -ETIME; 794 } else { 795 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 796 jiffies_to_msecs(to-left), wil->hw_version); 797 } 798 return 0; 799 } 800 801 /* 802 * We reset all the structures, and we reset the UMAC. 803 * After calling this routine, you're expected to reload 804 * the firmware. 805 */ 806 int wil_reset(struct wil6210_priv *wil, bool load_fw) 807 { 808 int rc; 809 810 wil_dbg_misc(wil, "%s()\n", __func__); 811 812 WARN_ON(!mutex_is_locked(&wil->mutex)); 813 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 814 815 if (debug_fw) { 816 static const u8 mac[ETH_ALEN] = { 817 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 818 }; 819 struct net_device *ndev = wil_to_ndev(wil); 820 821 ether_addr_copy(ndev->perm_addr, mac); 822 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 823 return 0; 824 } 825 826 if (wil->hw_version == HW_VER_UNKNOWN) 827 return -ENODEV; 828 829 if (wil->platform_ops.notify) { 830 rc = wil->platform_ops.notify(wil->platform_handle, 831 WIL_PLATFORM_EVT_PRE_RESET); 832 if (rc) 833 wil_err(wil, 834 "%s: PRE_RESET platform notify failed, rc %d\n", 835 __func__, rc); 836 } 837 838 set_bit(wil_status_resetting, wil->status); 839 840 cancel_work_sync(&wil->disconnect_worker); 841 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 842 wil_bcast_fini(wil); 843 844 /* Disable device led before reset*/ 845 wmi_led_cfg(wil, false); 846 847 /* prevent NAPI from being scheduled and prevent wmi commands */ 848 mutex_lock(&wil->wmi_mutex); 849 bitmap_zero(wil->status, wil_status_last); 850 mutex_unlock(&wil->wmi_mutex); 851 852 if (wil->scan_request) { 853 struct cfg80211_scan_info info = { 854 .aborted = true, 855 }; 856 857 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 858 wil->scan_request); 859 del_timer_sync(&wil->scan_timer); 860 cfg80211_scan_done(wil->scan_request, &info); 861 wil->scan_request = NULL; 862 } 863 864 wil_mask_irq(wil); 865 866 wmi_event_flush(wil); 867 868 flush_workqueue(wil->wq_service); 869 flush_workqueue(wil->wmi_wq); 870 871 wil_bl_crash_info(wil, false); 872 rc = wil_target_reset(wil); 873 wil_rx_fini(wil); 874 if (rc) { 875 wil_bl_crash_info(wil, true); 876 return rc; 877 } 878 879 rc = wil_get_bl_info(wil); 880 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */ 881 rc = 0; 882 if (rc) 883 return rc; 884 885 wil_set_oob_mode(wil, oob_mode); 886 if (load_fw) { 887 wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME, 888 WIL_FW2_NAME); 889 890 wil_halt_cpu(wil); 891 /* Loading f/w from the file */ 892 rc = wil_request_firmware(wil, WIL_FW_NAME); 893 if (rc) 894 return rc; 895 rc = wil_request_firmware(wil, WIL_FW2_NAME); 896 if (rc) 897 return rc; 898 899 /* Mark FW as loaded from host */ 900 wil_s(wil, RGF_USER_USAGE_6, 1); 901 902 /* clear any interrupts which on-card-firmware 903 * may have set 904 */ 905 wil6210_clear_irq(wil); 906 /* CAF_ICR - clear and mask */ 907 /* it is W1C, clear by writing back same value */ 908 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 909 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 910 911 wil_release_cpu(wil); 912 } 913 914 /* init after reset */ 915 wil->ap_isolate = 0; 916 reinit_completion(&wil->wmi_ready); 917 reinit_completion(&wil->wmi_call); 918 reinit_completion(&wil->halp.comp); 919 920 if (load_fw) { 921 wil_configure_interrupt_moderation(wil); 922 wil_unmask_irq(wil); 923 924 /* we just started MAC, wait for FW ready */ 925 rc = wil_wait_for_fw_ready(wil); 926 if (rc) 927 return rc; 928 929 /* check FW is responsive */ 930 rc = wmi_echo(wil); 931 if (rc) { 932 wil_err(wil, "%s: wmi_echo failed, rc %d\n", 933 __func__, rc); 934 return rc; 935 } 936 937 if (wil->platform_ops.notify) { 938 rc = wil->platform_ops.notify(wil->platform_handle, 939 WIL_PLATFORM_EVT_FW_RDY); 940 if (rc) { 941 wil_err(wil, 942 "%s: FW_RDY notify failed, rc %d\n", 943 __func__, rc); 944 rc = 0; 945 } 946 } 947 } 948 949 return rc; 950 } 951 952 void wil_fw_error_recovery(struct wil6210_priv *wil) 953 { 954 wil_dbg_misc(wil, "starting fw error recovery\n"); 955 956 if (test_bit(wil_status_resetting, wil->status)) { 957 wil_info(wil, "Reset already in progress\n"); 958 return; 959 } 960 961 wil->recovery_state = fw_recovery_pending; 962 schedule_work(&wil->fw_error_worker); 963 } 964 965 int __wil_up(struct wil6210_priv *wil) 966 { 967 struct net_device *ndev = wil_to_ndev(wil); 968 struct wireless_dev *wdev = wil->wdev; 969 int rc; 970 971 WARN_ON(!mutex_is_locked(&wil->mutex)); 972 973 rc = wil_reset(wil, true); 974 if (rc) 975 return rc; 976 977 /* Rx VRING. After MAC and beacon */ 978 rc = wil_rx_init(wil, 1 << rx_ring_order); 979 if (rc) 980 return rc; 981 982 switch (wdev->iftype) { 983 case NL80211_IFTYPE_STATION: 984 wil_dbg_misc(wil, "type: STATION\n"); 985 ndev->type = ARPHRD_ETHER; 986 break; 987 case NL80211_IFTYPE_AP: 988 wil_dbg_misc(wil, "type: AP\n"); 989 ndev->type = ARPHRD_ETHER; 990 break; 991 case NL80211_IFTYPE_P2P_CLIENT: 992 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 993 ndev->type = ARPHRD_ETHER; 994 break; 995 case NL80211_IFTYPE_P2P_GO: 996 wil_dbg_misc(wil, "type: P2P_GO\n"); 997 ndev->type = ARPHRD_ETHER; 998 break; 999 case NL80211_IFTYPE_MONITOR: 1000 wil_dbg_misc(wil, "type: Monitor\n"); 1001 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 1002 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 1003 break; 1004 default: 1005 return -EOPNOTSUPP; 1006 } 1007 1008 /* MAC address - pre-requisite for other commands */ 1009 wmi_set_mac_address(wil, ndev->dev_addr); 1010 1011 wil_dbg_misc(wil, "NAPI enable\n"); 1012 napi_enable(&wil->napi_rx); 1013 napi_enable(&wil->napi_tx); 1014 set_bit(wil_status_napi_en, wil->status); 1015 1016 if (wil->platform_ops.bus_request) 1017 wil->platform_ops.bus_request(wil->platform_handle, 1018 WIL_MAX_BUS_REQUEST_KBPS); 1019 1020 return 0; 1021 } 1022 1023 int wil_up(struct wil6210_priv *wil) 1024 { 1025 int rc; 1026 1027 wil_dbg_misc(wil, "%s()\n", __func__); 1028 1029 mutex_lock(&wil->mutex); 1030 rc = __wil_up(wil); 1031 mutex_unlock(&wil->mutex); 1032 1033 return rc; 1034 } 1035 1036 int __wil_down(struct wil6210_priv *wil) 1037 { 1038 int rc; 1039 1040 WARN_ON(!mutex_is_locked(&wil->mutex)); 1041 1042 if (wil->platform_ops.bus_request) 1043 wil->platform_ops.bus_request(wil->platform_handle, 0); 1044 1045 wil_disable_irq(wil); 1046 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 1047 napi_disable(&wil->napi_rx); 1048 napi_disable(&wil->napi_tx); 1049 wil_dbg_misc(wil, "NAPI disable\n"); 1050 } 1051 wil_enable_irq(wil); 1052 1053 (void)wil_p2p_stop_discovery(wil); 1054 1055 if (wil->scan_request) { 1056 struct cfg80211_scan_info info = { 1057 .aborted = true, 1058 }; 1059 1060 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 1061 wil->scan_request); 1062 del_timer_sync(&wil->scan_timer); 1063 cfg80211_scan_done(wil->scan_request, &info); 1064 wil->scan_request = NULL; 1065 } 1066 1067 if (test_bit(wil_status_fwconnected, wil->status) || 1068 test_bit(wil_status_fwconnecting, wil->status)) { 1069 1070 mutex_unlock(&wil->mutex); 1071 rc = wmi_call(wil, WMI_DISCONNECT_CMDID, NULL, 0, 1072 WMI_DISCONNECT_EVENTID, NULL, 0, 1073 WIL6210_DISCONNECT_TO_MS); 1074 mutex_lock(&wil->mutex); 1075 if (rc) 1076 wil_err(wil, "timeout waiting for disconnect\n"); 1077 } 1078 1079 wil_reset(wil, false); 1080 1081 return 0; 1082 } 1083 1084 int wil_down(struct wil6210_priv *wil) 1085 { 1086 int rc; 1087 1088 wil_dbg_misc(wil, "%s()\n", __func__); 1089 1090 wil_set_recovery_state(wil, fw_recovery_idle); 1091 mutex_lock(&wil->mutex); 1092 rc = __wil_down(wil); 1093 mutex_unlock(&wil->mutex); 1094 1095 return rc; 1096 } 1097 1098 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 1099 { 1100 int i; 1101 int rc = -ENOENT; 1102 1103 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1104 if ((wil->sta[i].status != wil_sta_unused) && 1105 ether_addr_equal(wil->sta[i].addr, mac)) { 1106 rc = i; 1107 break; 1108 } 1109 } 1110 1111 return rc; 1112 } 1113 1114 void wil_halp_vote(struct wil6210_priv *wil) 1115 { 1116 unsigned long rc; 1117 unsigned long to_jiffies = msecs_to_jiffies(WAIT_FOR_HALP_VOTE_MS); 1118 1119 mutex_lock(&wil->halp.lock); 1120 1121 wil_dbg_misc(wil, "%s: start, HALP ref_cnt (%d)\n", __func__, 1122 wil->halp.ref_cnt); 1123 1124 if (++wil->halp.ref_cnt == 1) { 1125 wil6210_set_halp(wil); 1126 rc = wait_for_completion_timeout(&wil->halp.comp, to_jiffies); 1127 if (!rc) 1128 wil_err(wil, "%s: HALP vote timed out\n", __func__); 1129 else 1130 wil_dbg_misc(wil, 1131 "%s: HALP vote completed after %d ms\n", 1132 __func__, 1133 jiffies_to_msecs(to_jiffies - rc)); 1134 } 1135 1136 wil_dbg_misc(wil, "%s: end, HALP ref_cnt (%d)\n", __func__, 1137 wil->halp.ref_cnt); 1138 1139 mutex_unlock(&wil->halp.lock); 1140 } 1141 1142 void wil_halp_unvote(struct wil6210_priv *wil) 1143 { 1144 WARN_ON(wil->halp.ref_cnt == 0); 1145 1146 mutex_lock(&wil->halp.lock); 1147 1148 wil_dbg_misc(wil, "%s: start, HALP ref_cnt (%d)\n", __func__, 1149 wil->halp.ref_cnt); 1150 1151 if (--wil->halp.ref_cnt == 0) { 1152 wil6210_clear_halp(wil); 1153 wil_dbg_misc(wil, "%s: HALP unvote\n", __func__); 1154 } 1155 1156 wil_dbg_misc(wil, "%s: end, HALP ref_cnt (%d)\n", __func__, 1157 wil->halp.ref_cnt); 1158 1159 mutex_unlock(&wil->halp.lock); 1160 } 1161