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 bool debug_fw; /* = false; */ 27 module_param(debug_fw, bool, S_IRUGO); 28 MODULE_PARM_DESC(debug_fw, " do not perform card reset. For FW debug"); 29 30 static bool oob_mode; 31 module_param(oob_mode, bool, S_IRUGO); 32 MODULE_PARM_DESC(oob_mode, 33 " enable out of the box (OOB) mode in FW, for diagnostics and certification"); 34 35 bool no_fw_recovery; 36 module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR); 37 MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery"); 38 39 /* if not set via modparam, will be set to default value of 1/8 of 40 * rx ring size during init flow 41 */ 42 unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT; 43 module_param(rx_ring_overflow_thrsh, ushort, S_IRUGO); 44 MODULE_PARM_DESC(rx_ring_overflow_thrsh, 45 " RX ring overflow threshold in descriptors."); 46 47 /* We allow allocation of more than 1 page buffers to support large packets. 48 * It is suboptimal behavior performance wise in case MTU above page size. 49 */ 50 unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 51 static int mtu_max_set(const char *val, const struct kernel_param *kp) 52 { 53 int ret; 54 55 /* sets mtu_max directly. no need to restore it in case of 56 * illegal value since we assume this will fail insmod 57 */ 58 ret = param_set_uint(val, kp); 59 if (ret) 60 return ret; 61 62 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU) 63 ret = -EINVAL; 64 65 return ret; 66 } 67 68 static const struct kernel_param_ops mtu_max_ops = { 69 .set = mtu_max_set, 70 .get = param_get_uint, 71 }; 72 73 module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, S_IRUGO); 74 MODULE_PARM_DESC(mtu_max, " Max MTU value."); 75 76 static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT; 77 static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT; 78 static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT; 79 80 static int ring_order_set(const char *val, const struct kernel_param *kp) 81 { 82 int ret; 83 uint x; 84 85 ret = kstrtouint(val, 0, &x); 86 if (ret) 87 return ret; 88 89 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX)) 90 return -EINVAL; 91 92 *((uint *)kp->arg) = x; 93 94 return 0; 95 } 96 97 static const struct kernel_param_ops ring_order_ops = { 98 .set = ring_order_set, 99 .get = param_get_uint, 100 }; 101 102 module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, S_IRUGO); 103 MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order"); 104 module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, S_IRUGO); 105 MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order"); 106 module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, S_IRUGO); 107 MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order"); 108 109 #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 110 #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 111 112 /* 113 * Due to a hardware issue, 114 * one has to read/write to/from NIC in 32-bit chunks; 115 * regular memcpy_fromio and siblings will 116 * not work on 64-bit platform - it uses 64-bit transactions 117 * 118 * Force 32-bit transactions to enable NIC on 64-bit platforms 119 * 120 * To avoid byte swap on big endian host, __raw_{read|write}l 121 * should be used - {read|write}l would swap bytes to provide 122 * little endian on PCI value in host endianness. 123 */ 124 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 125 size_t count) 126 { 127 u32 *d = dst; 128 const volatile u32 __iomem *s = src; 129 130 /* size_t is unsigned, if (count%4 != 0) it will wrap */ 131 for (count += 4; count > 4; count -= 4) 132 *d++ = __raw_readl(s++); 133 } 134 135 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, 136 size_t count) 137 { 138 volatile u32 __iomem *d = dst; 139 const u32 *s = src; 140 141 for (count += 4; count > 4; count -= 4) 142 __raw_writel(*s++, d++); 143 } 144 145 static void wil_disconnect_cid(struct wil6210_priv *wil, int cid, 146 u16 reason_code, bool from_event) 147 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) 148 { 149 uint i; 150 struct net_device *ndev = wil_to_ndev(wil); 151 struct wireless_dev *wdev = wil->wdev; 152 struct wil_sta_info *sta = &wil->sta[cid]; 153 154 might_sleep(); 155 wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid, 156 sta->status); 157 /* inform upper/lower layers */ 158 if (sta->status != wil_sta_unused) { 159 if (!from_event) 160 wmi_disconnect_sta(wil, sta->addr, reason_code, true); 161 162 switch (wdev->iftype) { 163 case NL80211_IFTYPE_AP: 164 case NL80211_IFTYPE_P2P_GO: 165 /* AP-like interface */ 166 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 167 break; 168 default: 169 break; 170 } 171 sta->status = wil_sta_unused; 172 } 173 /* reorder buffers */ 174 for (i = 0; i < WIL_STA_TID_NUM; i++) { 175 struct wil_tid_ampdu_rx *r; 176 177 spin_lock_bh(&sta->tid_rx_lock); 178 179 r = sta->tid_rx[i]; 180 sta->tid_rx[i] = NULL; 181 wil_tid_ampdu_rx_free(wil, r); 182 183 spin_unlock_bh(&sta->tid_rx_lock); 184 } 185 /* crypto context */ 186 memset(sta->tid_crypto_rx, 0, sizeof(sta->tid_crypto_rx)); 187 memset(&sta->group_crypto_rx, 0, sizeof(sta->group_crypto_rx)); 188 /* release vrings */ 189 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 190 if (wil->vring2cid_tid[i][0] == cid) 191 wil_vring_fini_tx(wil, i); 192 } 193 /* statistics */ 194 memset(&sta->stats, 0, sizeof(sta->stats)); 195 } 196 197 static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 198 u16 reason_code, bool from_event) 199 { 200 int cid = -ENOENT; 201 struct net_device *ndev = wil_to_ndev(wil); 202 struct wireless_dev *wdev = wil->wdev; 203 204 might_sleep(); 205 wil_info(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid, 206 reason_code, from_event ? "+" : "-"); 207 208 /* Cases are: 209 * - disconnect single STA, still connected 210 * - disconnect single STA, already disconnected 211 * - disconnect all 212 * 213 * For "disconnect all", there are 3 options: 214 * - bssid == NULL 215 * - bssid is broadcast address (ff:ff:ff:ff:ff:ff) 216 * - bssid is our MAC address 217 */ 218 if (bssid && !is_broadcast_ether_addr(bssid) && 219 !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) { 220 cid = wil_find_cid(wil, bssid); 221 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 222 bssid, cid, reason_code); 223 if (cid >= 0) /* disconnect 1 peer */ 224 wil_disconnect_cid(wil, cid, reason_code, from_event); 225 } else { /* all */ 226 wil_dbg_misc(wil, "Disconnect all\n"); 227 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 228 wil_disconnect_cid(wil, cid, reason_code, from_event); 229 } 230 231 /* link state */ 232 switch (wdev->iftype) { 233 case NL80211_IFTYPE_STATION: 234 case NL80211_IFTYPE_P2P_CLIENT: 235 wil_bcast_fini(wil); 236 netif_tx_stop_all_queues(ndev); 237 netif_carrier_off(ndev); 238 239 if (test_bit(wil_status_fwconnected, wil->status)) { 240 clear_bit(wil_status_fwconnected, wil->status); 241 cfg80211_disconnected(ndev, reason_code, 242 NULL, 0, false, GFP_KERNEL); 243 } else if (test_bit(wil_status_fwconnecting, wil->status)) { 244 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 245 WLAN_STATUS_UNSPECIFIED_FAILURE, 246 GFP_KERNEL); 247 } 248 clear_bit(wil_status_fwconnecting, wil->status); 249 break; 250 default: 251 break; 252 } 253 } 254 255 static void wil_disconnect_worker(struct work_struct *work) 256 { 257 struct wil6210_priv *wil = container_of(work, 258 struct wil6210_priv, disconnect_worker); 259 260 mutex_lock(&wil->mutex); 261 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false); 262 mutex_unlock(&wil->mutex); 263 } 264 265 static void wil_connect_timer_fn(ulong x) 266 { 267 struct wil6210_priv *wil = (void *)x; 268 bool q; 269 270 wil_err(wil, "Connect timeout detected, disconnect station\n"); 271 272 /* reschedule to thread context - disconnect won't 273 * run from atomic context. 274 * queue on wmi_wq to prevent race with connect event. 275 */ 276 q = queue_work(wil->wmi_wq, &wil->disconnect_worker); 277 wil_dbg_wmi(wil, "queue_work of disconnect_worker -> %d\n", q); 278 } 279 280 static void wil_scan_timer_fn(ulong x) 281 { 282 struct wil6210_priv *wil = (void *)x; 283 284 clear_bit(wil_status_fwready, wil->status); 285 wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 286 wil_fw_error_recovery(wil); 287 } 288 289 static int wil_wait_for_recovery(struct wil6210_priv *wil) 290 { 291 if (wait_event_interruptible(wil->wq, wil->recovery_state != 292 fw_recovery_pending)) { 293 wil_err(wil, "Interrupt, canceling recovery\n"); 294 return -ERESTARTSYS; 295 } 296 if (wil->recovery_state != fw_recovery_running) { 297 wil_info(wil, "Recovery cancelled\n"); 298 return -EINTR; 299 } 300 wil_info(wil, "Proceed with recovery\n"); 301 return 0; 302 } 303 304 void wil_set_recovery_state(struct wil6210_priv *wil, int state) 305 { 306 wil_dbg_misc(wil, "%s(%d -> %d)\n", __func__, 307 wil->recovery_state, state); 308 309 wil->recovery_state = state; 310 wake_up_interruptible(&wil->wq); 311 } 312 313 bool wil_is_recovery_blocked(struct wil6210_priv *wil) 314 { 315 return no_fw_recovery && (wil->recovery_state == fw_recovery_pending); 316 } 317 318 static void wil_fw_error_worker(struct work_struct *work) 319 { 320 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 321 fw_error_worker); 322 struct wireless_dev *wdev = wil->wdev; 323 324 wil_dbg_misc(wil, "fw error worker\n"); 325 326 if (!netif_running(wil_to_ndev(wil))) { 327 wil_info(wil, "No recovery - interface is down\n"); 328 return; 329 } 330 331 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 332 * passed since last recovery attempt 333 */ 334 if (time_is_after_jiffies(wil->last_fw_recovery + 335 WIL6210_FW_RECOVERY_TO)) 336 wil->recovery_count++; 337 else 338 wil->recovery_count = 1; /* fw was alive for a long time */ 339 340 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 341 wil_err(wil, "too many recovery attempts (%d), giving up\n", 342 wil->recovery_count); 343 return; 344 } 345 346 wil->last_fw_recovery = jiffies; 347 348 mutex_lock(&wil->mutex); 349 switch (wdev->iftype) { 350 case NL80211_IFTYPE_STATION: 351 case NL80211_IFTYPE_P2P_CLIENT: 352 case NL80211_IFTYPE_MONITOR: 353 wil_info(wil, "fw error recovery requested (try %d)...\n", 354 wil->recovery_count); 355 if (!no_fw_recovery) 356 wil->recovery_state = fw_recovery_running; 357 if (0 != wil_wait_for_recovery(wil)) 358 break; 359 360 __wil_down(wil); 361 __wil_up(wil); 362 break; 363 case NL80211_IFTYPE_AP: 364 case NL80211_IFTYPE_P2P_GO: 365 wil_info(wil, "No recovery for AP-like interface\n"); 366 /* recovery in these modes is done by upper layers */ 367 break; 368 default: 369 wil_err(wil, "No recovery - unknown interface type %d\n", 370 wdev->iftype); 371 break; 372 } 373 mutex_unlock(&wil->mutex); 374 } 375 376 static int wil_find_free_vring(struct wil6210_priv *wil) 377 { 378 int i; 379 380 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 381 if (!wil->vring_tx[i].va) 382 return i; 383 } 384 return -EINVAL; 385 } 386 387 int wil_tx_init(struct wil6210_priv *wil, int cid) 388 { 389 int rc = -EINVAL, ringid; 390 391 if (cid < 0) { 392 wil_err(wil, "No connection pending\n"); 393 goto out; 394 } 395 ringid = wil_find_free_vring(wil); 396 if (ringid < 0) { 397 wil_err(wil, "No free vring found\n"); 398 goto out; 399 } 400 401 wil_dbg_wmi(wil, "Configure for connection CID %d vring %d\n", 402 cid, ringid); 403 404 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); 405 if (rc) 406 wil_err(wil, "wil_vring_init_tx for CID %d vring %d failed\n", 407 cid, ringid); 408 409 out: 410 return rc; 411 } 412 413 int wil_bcast_init(struct wil6210_priv *wil) 414 { 415 int ri = wil->bcast_vring, rc; 416 417 if ((ri >= 0) && wil->vring_tx[ri].va) 418 return 0; 419 420 ri = wil_find_free_vring(wil); 421 if (ri < 0) 422 return ri; 423 424 wil->bcast_vring = ri; 425 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order); 426 if (rc) 427 wil->bcast_vring = -1; 428 429 return rc; 430 } 431 432 void wil_bcast_fini(struct wil6210_priv *wil) 433 { 434 int ri = wil->bcast_vring; 435 436 if (ri < 0) 437 return; 438 439 wil->bcast_vring = -1; 440 wil_vring_fini_tx(wil, ri); 441 } 442 443 int wil_priv_init(struct wil6210_priv *wil) 444 { 445 uint i; 446 447 wil_dbg_misc(wil, "%s()\n", __func__); 448 449 memset(wil->sta, 0, sizeof(wil->sta)); 450 for (i = 0; i < WIL6210_MAX_CID; i++) 451 spin_lock_init(&wil->sta[i].tid_rx_lock); 452 453 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) 454 spin_lock_init(&wil->vring_tx_data[i].lock); 455 456 mutex_init(&wil->mutex); 457 mutex_init(&wil->wmi_mutex); 458 mutex_init(&wil->probe_client_mutex); 459 mutex_init(&wil->p2p_wdev_mutex); 460 461 init_completion(&wil->wmi_ready); 462 init_completion(&wil->wmi_call); 463 464 wil->bcast_vring = -1; 465 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 466 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 467 setup_timer(&wil->p2p.discovery_timer, wil_p2p_discovery_timer_fn, 468 (ulong)wil); 469 470 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 471 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 472 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 473 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker); 474 475 INIT_LIST_HEAD(&wil->pending_wmi_ev); 476 INIT_LIST_HEAD(&wil->probe_client_pending); 477 spin_lock_init(&wil->wmi_ev_lock); 478 init_waitqueue_head(&wil->wq); 479 480 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 481 if (!wil->wmi_wq) 482 return -EAGAIN; 483 484 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 485 if (!wil->wq_service) 486 goto out_wmi_wq; 487 488 wil->last_fw_recovery = jiffies; 489 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 490 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 491 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 492 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 493 494 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 495 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 496 return 0; 497 498 out_wmi_wq: 499 destroy_workqueue(wil->wmi_wq); 500 501 return -EAGAIN; 502 } 503 504 /** 505 * wil6210_disconnect - disconnect one connection 506 * @wil: driver context 507 * @bssid: peer to disconnect, NULL to disconnect all 508 * @reason_code: Reason code for the Disassociation frame 509 * @from_event: whether is invoked from FW event handler 510 * 511 * Disconnect and release associated resources. If invoked not from the 512 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 513 */ 514 void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 515 u16 reason_code, bool from_event) 516 { 517 wil_dbg_misc(wil, "%s()\n", __func__); 518 519 del_timer_sync(&wil->connect_timer); 520 _wil6210_disconnect(wil, bssid, reason_code, from_event); 521 } 522 523 void wil_priv_deinit(struct wil6210_priv *wil) 524 { 525 wil_dbg_misc(wil, "%s()\n", __func__); 526 527 wil_set_recovery_state(wil, fw_recovery_idle); 528 del_timer_sync(&wil->scan_timer); 529 del_timer_sync(&wil->p2p.discovery_timer); 530 cancel_work_sync(&wil->disconnect_worker); 531 cancel_work_sync(&wil->fw_error_worker); 532 cancel_work_sync(&wil->p2p.discovery_expired_work); 533 mutex_lock(&wil->mutex); 534 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 535 mutex_unlock(&wil->mutex); 536 wmi_event_flush(wil); 537 wil_probe_client_flush(wil); 538 cancel_work_sync(&wil->probe_client_worker); 539 destroy_workqueue(wil->wq_service); 540 destroy_workqueue(wil->wmi_wq); 541 } 542 543 static inline void wil_halt_cpu(struct wil6210_priv *wil) 544 { 545 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 546 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 547 } 548 549 static inline void wil_release_cpu(struct wil6210_priv *wil) 550 { 551 /* Start CPU */ 552 wil_w(wil, RGF_USER_USER_CPU_0, 1); 553 } 554 555 static void wil_set_oob_mode(struct wil6210_priv *wil, bool enable) 556 { 557 wil_info(wil, "%s: enable=%d\n", __func__, enable); 558 if (enable) { 559 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 560 } else { 561 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE); 562 } 563 } 564 565 static int wil_target_reset(struct wil6210_priv *wil) 566 { 567 int delay = 0; 568 u32 x, x1 = 0; 569 570 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 571 572 /* Clear MAC link up */ 573 wil_s(wil, RGF_HP_CTRL, BIT(15)); 574 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 575 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 576 577 wil_halt_cpu(wil); 578 579 /* clear all boot loader "ready" bits */ 580 wil_w(wil, RGF_USER_BL + 581 offsetof(struct bl_dedicated_registers_v0, boot_loader_ready), 0); 582 /* Clear Fw Download notification */ 583 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 584 585 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 586 /* XTAL stabilization should take about 3ms */ 587 usleep_range(5000, 7000); 588 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 589 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 590 wil_err(wil, "Xtal stabilization timeout\n" 591 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 592 return -ETIME; 593 } 594 /* switch 10k to XTAL*/ 595 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 596 /* 40 MHz */ 597 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 598 599 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 600 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 601 602 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 603 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 604 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 605 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 606 607 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 608 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 609 610 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 611 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 612 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 613 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 614 615 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 616 /* reset A2 PCIE AHB */ 617 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 618 619 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 620 621 /* wait until device ready. typical time is 20..80 msec */ 622 do { 623 msleep(RST_DELAY); 624 x = wil_r(wil, RGF_USER_BL + 625 offsetof(struct bl_dedicated_registers_v0, 626 boot_loader_ready)); 627 if (x1 != x) { 628 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x); 629 x1 = x; 630 } 631 if (delay++ > RST_COUNT) { 632 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 633 x); 634 return -ETIME; 635 } 636 } while (x != BL_READY); 637 638 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 639 640 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 641 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 642 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 643 644 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 645 return 0; 646 } 647 648 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 649 { 650 le32_to_cpus(&r->base); 651 le16_to_cpus(&r->entry_size); 652 le16_to_cpus(&r->size); 653 le32_to_cpus(&r->tail); 654 le32_to_cpus(&r->head); 655 } 656 657 static int wil_get_bl_info(struct wil6210_priv *wil) 658 { 659 struct net_device *ndev = wil_to_ndev(wil); 660 struct wiphy *wiphy = wil_to_wiphy(wil); 661 union { 662 struct bl_dedicated_registers_v0 bl0; 663 struct bl_dedicated_registers_v1 bl1; 664 } bl; 665 u32 bl_ver; 666 u8 *mac; 667 u16 rf_status; 668 669 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 670 sizeof(bl)); 671 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 672 mac = bl.bl0.mac_address; 673 674 if (bl_ver == 0) { 675 le32_to_cpus(&bl.bl0.rf_type); 676 le32_to_cpus(&bl.bl0.baseband_type); 677 rf_status = 0; /* actually, unknown */ 678 wil_info(wil, 679 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 680 bl_ver, mac, 681 bl.bl0.rf_type, bl.bl0.baseband_type); 682 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 683 } else { 684 le16_to_cpus(&bl.bl1.rf_type); 685 rf_status = le16_to_cpu(bl.bl1.rf_status); 686 le32_to_cpus(&bl.bl1.baseband_type); 687 le16_to_cpus(&bl.bl1.bl_version_subminor); 688 le16_to_cpus(&bl.bl1.bl_version_build); 689 wil_info(wil, 690 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 691 bl_ver, mac, 692 bl.bl1.rf_type, rf_status, 693 bl.bl1.baseband_type); 694 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 695 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 696 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 697 } 698 699 if (!is_valid_ether_addr(mac)) { 700 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 701 return -EINVAL; 702 } 703 704 ether_addr_copy(ndev->perm_addr, mac); 705 ether_addr_copy(wiphy->perm_addr, mac); 706 if (!is_valid_ether_addr(ndev->dev_addr)) 707 ether_addr_copy(ndev->dev_addr, mac); 708 709 if (rf_status) {/* bad RF cable? */ 710 wil_err(wil, "RF communication error 0x%04x", 711 rf_status); 712 return -EAGAIN; 713 } 714 715 return 0; 716 } 717 718 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 719 { 720 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 721 u32 bl_ver = wil_r(wil, RGF_USER_BL + 722 offsetof(struct bl_dedicated_registers_v0, 723 boot_loader_struct_version)); 724 725 if (bl_ver < 2) 726 return; 727 728 bl_assert_code = wil_r(wil, RGF_USER_BL + 729 offsetof(struct bl_dedicated_registers_v1, 730 bl_assert_code)); 731 bl_assert_blink = wil_r(wil, RGF_USER_BL + 732 offsetof(struct bl_dedicated_registers_v1, 733 bl_assert_blink)); 734 bl_magic_number = wil_r(wil, RGF_USER_BL + 735 offsetof(struct bl_dedicated_registers_v1, 736 bl_magic_number)); 737 738 if (is_err) { 739 wil_err(wil, 740 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 741 bl_assert_code, bl_assert_blink, bl_magic_number); 742 } else { 743 wil_dbg_misc(wil, 744 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 745 bl_assert_code, bl_assert_blink, bl_magic_number); 746 } 747 } 748 749 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 750 { 751 ulong to = msecs_to_jiffies(1000); 752 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 753 754 if (0 == left) { 755 wil_err(wil, "Firmware not ready\n"); 756 return -ETIME; 757 } else { 758 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 759 jiffies_to_msecs(to-left), wil->hw_version); 760 } 761 return 0; 762 } 763 764 /* 765 * We reset all the structures, and we reset the UMAC. 766 * After calling this routine, you're expected to reload 767 * the firmware. 768 */ 769 int wil_reset(struct wil6210_priv *wil, bool load_fw) 770 { 771 int rc; 772 773 wil_dbg_misc(wil, "%s()\n", __func__); 774 775 WARN_ON(!mutex_is_locked(&wil->mutex)); 776 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 777 778 if (debug_fw) { 779 static const u8 mac[ETH_ALEN] = { 780 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 781 }; 782 struct net_device *ndev = wil_to_ndev(wil); 783 784 ether_addr_copy(ndev->perm_addr, mac); 785 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 786 return 0; 787 } 788 789 if (wil->hw_version == HW_VER_UNKNOWN) 790 return -ENODEV; 791 792 if (wil->platform_ops.notify) { 793 rc = wil->platform_ops.notify(wil->platform_handle, 794 WIL_PLATFORM_EVT_PRE_RESET); 795 if (rc) 796 wil_err(wil, 797 "%s: PRE_RESET platform notify failed, rc %d\n", 798 __func__, rc); 799 } 800 801 set_bit(wil_status_resetting, wil->status); 802 803 cancel_work_sync(&wil->disconnect_worker); 804 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 805 wil_bcast_fini(wil); 806 807 /* prevent NAPI from being scheduled and prevent wmi commands */ 808 mutex_lock(&wil->wmi_mutex); 809 bitmap_zero(wil->status, wil_status_last); 810 mutex_unlock(&wil->wmi_mutex); 811 812 if (wil->scan_request) { 813 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 814 wil->scan_request); 815 del_timer_sync(&wil->scan_timer); 816 cfg80211_scan_done(wil->scan_request, true); 817 wil->scan_request = NULL; 818 } 819 820 wil_mask_irq(wil); 821 822 wmi_event_flush(wil); 823 824 flush_workqueue(wil->wq_service); 825 flush_workqueue(wil->wmi_wq); 826 827 wil_bl_crash_info(wil, false); 828 rc = wil_target_reset(wil); 829 wil_rx_fini(wil); 830 if (rc) { 831 wil_bl_crash_info(wil, true); 832 return rc; 833 } 834 835 rc = wil_get_bl_info(wil); 836 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */ 837 rc = 0; 838 if (rc) 839 return rc; 840 841 wil_set_oob_mode(wil, oob_mode); 842 if (load_fw) { 843 wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME, 844 WIL_FW2_NAME); 845 846 wil_halt_cpu(wil); 847 /* Loading f/w from the file */ 848 rc = wil_request_firmware(wil, WIL_FW_NAME); 849 if (rc) 850 return rc; 851 rc = wil_request_firmware(wil, WIL_FW2_NAME); 852 if (rc) 853 return rc; 854 855 /* Mark FW as loaded from host */ 856 wil_s(wil, RGF_USER_USAGE_6, 1); 857 858 /* clear any interrupts which on-card-firmware 859 * may have set 860 */ 861 wil6210_clear_irq(wil); 862 /* CAF_ICR - clear and mask */ 863 /* it is W1C, clear by writing back same value */ 864 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 865 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 866 867 wil_release_cpu(wil); 868 } 869 870 /* init after reset */ 871 wil->ap_isolate = 0; 872 reinit_completion(&wil->wmi_ready); 873 reinit_completion(&wil->wmi_call); 874 875 if (load_fw) { 876 wil_configure_interrupt_moderation(wil); 877 wil_unmask_irq(wil); 878 879 /* we just started MAC, wait for FW ready */ 880 rc = wil_wait_for_fw_ready(wil); 881 if (rc) 882 return rc; 883 884 /* check FW is responsive */ 885 rc = wmi_echo(wil); 886 if (rc) { 887 wil_err(wil, "%s: wmi_echo failed, rc %d\n", 888 __func__, rc); 889 return rc; 890 } 891 892 if (wil->platform_ops.notify) { 893 rc = wil->platform_ops.notify(wil->platform_handle, 894 WIL_PLATFORM_EVT_FW_RDY); 895 if (rc) { 896 wil_err(wil, 897 "%s: FW_RDY notify failed, rc %d\n", 898 __func__, rc); 899 rc = 0; 900 } 901 } 902 } 903 904 return rc; 905 } 906 907 void wil_fw_error_recovery(struct wil6210_priv *wil) 908 { 909 wil_dbg_misc(wil, "starting fw error recovery\n"); 910 911 if (test_bit(wil_status_resetting, wil->status)) { 912 wil_info(wil, "Reset already in progress\n"); 913 return; 914 } 915 916 wil->recovery_state = fw_recovery_pending; 917 schedule_work(&wil->fw_error_worker); 918 } 919 920 int __wil_up(struct wil6210_priv *wil) 921 { 922 struct net_device *ndev = wil_to_ndev(wil); 923 struct wireless_dev *wdev = wil->wdev; 924 int rc; 925 926 WARN_ON(!mutex_is_locked(&wil->mutex)); 927 928 rc = wil_reset(wil, true); 929 if (rc) 930 return rc; 931 932 /* Rx VRING. After MAC and beacon */ 933 rc = wil_rx_init(wil, 1 << rx_ring_order); 934 if (rc) 935 return rc; 936 937 switch (wdev->iftype) { 938 case NL80211_IFTYPE_STATION: 939 wil_dbg_misc(wil, "type: STATION\n"); 940 ndev->type = ARPHRD_ETHER; 941 break; 942 case NL80211_IFTYPE_AP: 943 wil_dbg_misc(wil, "type: AP\n"); 944 ndev->type = ARPHRD_ETHER; 945 break; 946 case NL80211_IFTYPE_P2P_CLIENT: 947 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 948 ndev->type = ARPHRD_ETHER; 949 break; 950 case NL80211_IFTYPE_P2P_GO: 951 wil_dbg_misc(wil, "type: P2P_GO\n"); 952 ndev->type = ARPHRD_ETHER; 953 break; 954 case NL80211_IFTYPE_MONITOR: 955 wil_dbg_misc(wil, "type: Monitor\n"); 956 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 957 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 958 break; 959 default: 960 return -EOPNOTSUPP; 961 } 962 963 /* MAC address - pre-requisite for other commands */ 964 wmi_set_mac_address(wil, ndev->dev_addr); 965 966 wil_dbg_misc(wil, "NAPI enable\n"); 967 napi_enable(&wil->napi_rx); 968 napi_enable(&wil->napi_tx); 969 set_bit(wil_status_napi_en, wil->status); 970 971 if (wil->platform_ops.bus_request) 972 wil->platform_ops.bus_request(wil->platform_handle, 973 WIL_MAX_BUS_REQUEST_KBPS); 974 975 return 0; 976 } 977 978 int wil_up(struct wil6210_priv *wil) 979 { 980 int rc; 981 982 wil_dbg_misc(wil, "%s()\n", __func__); 983 984 mutex_lock(&wil->mutex); 985 rc = __wil_up(wil); 986 mutex_unlock(&wil->mutex); 987 988 return rc; 989 } 990 991 int __wil_down(struct wil6210_priv *wil) 992 { 993 int rc; 994 995 WARN_ON(!mutex_is_locked(&wil->mutex)); 996 997 if (wil->platform_ops.bus_request) 998 wil->platform_ops.bus_request(wil->platform_handle, 0); 999 1000 wil_disable_irq(wil); 1001 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 1002 napi_disable(&wil->napi_rx); 1003 napi_disable(&wil->napi_tx); 1004 wil_dbg_misc(wil, "NAPI disable\n"); 1005 } 1006 wil_enable_irq(wil); 1007 1008 (void)wil_p2p_stop_discovery(wil); 1009 1010 if (wil->scan_request) { 1011 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 1012 wil->scan_request); 1013 del_timer_sync(&wil->scan_timer); 1014 cfg80211_scan_done(wil->scan_request, true); 1015 wil->scan_request = NULL; 1016 } 1017 1018 if (test_bit(wil_status_fwconnected, wil->status) || 1019 test_bit(wil_status_fwconnecting, wil->status)) { 1020 1021 mutex_unlock(&wil->mutex); 1022 rc = wmi_call(wil, WMI_DISCONNECT_CMDID, NULL, 0, 1023 WMI_DISCONNECT_EVENTID, NULL, 0, 1024 WIL6210_DISCONNECT_TO_MS); 1025 mutex_lock(&wil->mutex); 1026 if (rc) 1027 wil_err(wil, "timeout waiting for disconnect\n"); 1028 } 1029 1030 wil_reset(wil, false); 1031 1032 return 0; 1033 } 1034 1035 int wil_down(struct wil6210_priv *wil) 1036 { 1037 int rc; 1038 1039 wil_dbg_misc(wil, "%s()\n", __func__); 1040 1041 wil_set_recovery_state(wil, fw_recovery_idle); 1042 mutex_lock(&wil->mutex); 1043 rc = __wil_down(wil); 1044 mutex_unlock(&wil->mutex); 1045 1046 return rc; 1047 } 1048 1049 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 1050 { 1051 int i; 1052 int rc = -ENOENT; 1053 1054 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1055 if ((wil->sta[i].status != wil_sta_unused) && 1056 ether_addr_equal(wil->sta[i].addr, mac)) { 1057 rc = i; 1058 break; 1059 } 1060 } 1061 1062 return rc; 1063 } 1064