1 /* 2 * Copyright (c) 2012-2015 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 25 #define WAIT_FOR_DISCONNECT_TIMEOUT_MS 2000 26 #define WAIT_FOR_DISCONNECT_INTERVAL_MS 10 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 bool no_fw_recovery; 33 module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR); 34 MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery"); 35 36 /* if not set via modparam, will be set to default value of 1/8 of 37 * rx ring size during init flow 38 */ 39 unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT; 40 module_param(rx_ring_overflow_thrsh, ushort, S_IRUGO); 41 MODULE_PARM_DESC(rx_ring_overflow_thrsh, 42 " RX ring overflow threshold in descriptors."); 43 44 /* We allow allocation of more than 1 page buffers to support large packets. 45 * It is suboptimal behavior performance wise in case MTU above page size. 46 */ 47 unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 48 static int mtu_max_set(const char *val, const struct kernel_param *kp) 49 { 50 int ret; 51 52 /* sets mtu_max directly. no need to restore it in case of 53 * illegal value since we assume this will fail insmod 54 */ 55 ret = param_set_uint(val, kp); 56 if (ret) 57 return ret; 58 59 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU) 60 ret = -EINVAL; 61 62 return ret; 63 } 64 65 static const struct kernel_param_ops mtu_max_ops = { 66 .set = mtu_max_set, 67 .get = param_get_uint, 68 }; 69 70 module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, S_IRUGO); 71 MODULE_PARM_DESC(mtu_max, " Max MTU value."); 72 73 static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT; 74 static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT; 75 static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT; 76 77 static int ring_order_set(const char *val, const struct kernel_param *kp) 78 { 79 int ret; 80 uint x; 81 82 ret = kstrtouint(val, 0, &x); 83 if (ret) 84 return ret; 85 86 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX)) 87 return -EINVAL; 88 89 *((uint *)kp->arg) = x; 90 91 return 0; 92 } 93 94 static const struct kernel_param_ops ring_order_ops = { 95 .set = ring_order_set, 96 .get = param_get_uint, 97 }; 98 99 module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, S_IRUGO); 100 MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order"); 101 module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, S_IRUGO); 102 MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order"); 103 module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, S_IRUGO); 104 MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order"); 105 106 #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 107 #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 108 109 /* 110 * Due to a hardware issue, 111 * one has to read/write to/from NIC in 32-bit chunks; 112 * regular memcpy_fromio and siblings will 113 * not work on 64-bit platform - it uses 64-bit transactions 114 * 115 * Force 32-bit transactions to enable NIC on 64-bit platforms 116 * 117 * To avoid byte swap on big endian host, __raw_{read|write}l 118 * should be used - {read|write}l would swap bytes to provide 119 * little endian on PCI value in host endianness. 120 */ 121 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 122 size_t count) 123 { 124 u32 *d = dst; 125 const volatile u32 __iomem *s = src; 126 127 /* size_t is unsigned, if (count%4 != 0) it will wrap */ 128 for (count += 4; count > 4; count -= 4) 129 *d++ = __raw_readl(s++); 130 } 131 132 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, 133 size_t count) 134 { 135 volatile u32 __iomem *d = dst; 136 const u32 *s = src; 137 138 for (count += 4; count > 4; count -= 4) 139 __raw_writel(*s++, d++); 140 } 141 142 static void wil_disconnect_cid(struct wil6210_priv *wil, int cid, 143 u16 reason_code, bool from_event) 144 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) 145 { 146 uint i; 147 struct net_device *ndev = wil_to_ndev(wil); 148 struct wireless_dev *wdev = wil->wdev; 149 struct wil_sta_info *sta = &wil->sta[cid]; 150 151 might_sleep(); 152 wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid, 153 sta->status); 154 155 if (sta->status != wil_sta_unused) { 156 if (!from_event) 157 wmi_disconnect_sta(wil, sta->addr, reason_code); 158 159 switch (wdev->iftype) { 160 case NL80211_IFTYPE_AP: 161 case NL80211_IFTYPE_P2P_GO: 162 /* AP-like interface */ 163 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 164 break; 165 default: 166 break; 167 } 168 sta->status = wil_sta_unused; 169 } 170 171 for (i = 0; i < WIL_STA_TID_NUM; i++) { 172 struct wil_tid_ampdu_rx *r; 173 174 spin_lock_bh(&sta->tid_rx_lock); 175 176 r = sta->tid_rx[i]; 177 sta->tid_rx[i] = NULL; 178 wil_tid_ampdu_rx_free(wil, r); 179 180 spin_unlock_bh(&sta->tid_rx_lock); 181 } 182 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 183 if (wil->vring2cid_tid[i][0] == cid) 184 wil_vring_fini_tx(wil, i); 185 } 186 memset(&sta->stats, 0, sizeof(sta->stats)); 187 } 188 189 static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 190 u16 reason_code, bool from_event) 191 { 192 int cid = -ENOENT; 193 struct net_device *ndev = wil_to_ndev(wil); 194 struct wireless_dev *wdev = wil->wdev; 195 196 might_sleep(); 197 wil_dbg_misc(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid, 198 reason_code, from_event ? "+" : "-"); 199 200 /* Cases are: 201 * - disconnect single STA, still connected 202 * - disconnect single STA, already disconnected 203 * - disconnect all 204 * 205 * For "disconnect all", there are 2 options: 206 * - bssid == NULL 207 * - bssid is our MAC address 208 */ 209 if (bssid && memcmp(ndev->dev_addr, bssid, ETH_ALEN)) { 210 cid = wil_find_cid(wil, bssid); 211 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 212 bssid, cid, reason_code); 213 if (cid >= 0) /* disconnect 1 peer */ 214 wil_disconnect_cid(wil, cid, reason_code, from_event); 215 } else { /* all */ 216 wil_dbg_misc(wil, "Disconnect all\n"); 217 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 218 wil_disconnect_cid(wil, cid, reason_code, from_event); 219 } 220 221 /* link state */ 222 switch (wdev->iftype) { 223 case NL80211_IFTYPE_STATION: 224 case NL80211_IFTYPE_P2P_CLIENT: 225 wil_bcast_fini(wil); 226 netif_tx_stop_all_queues(ndev); 227 netif_carrier_off(ndev); 228 229 if (test_bit(wil_status_fwconnected, wil->status)) { 230 clear_bit(wil_status_fwconnected, wil->status); 231 cfg80211_disconnected(ndev, reason_code, 232 NULL, 0, false, GFP_KERNEL); 233 } else if (test_bit(wil_status_fwconnecting, wil->status)) { 234 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 235 WLAN_STATUS_UNSPECIFIED_FAILURE, 236 GFP_KERNEL); 237 } 238 clear_bit(wil_status_fwconnecting, wil->status); 239 break; 240 default: 241 break; 242 } 243 } 244 245 static void wil_disconnect_worker(struct work_struct *work) 246 { 247 struct wil6210_priv *wil = container_of(work, 248 struct wil6210_priv, disconnect_worker); 249 250 mutex_lock(&wil->mutex); 251 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false); 252 mutex_unlock(&wil->mutex); 253 } 254 255 static void wil_connect_timer_fn(ulong x) 256 { 257 struct wil6210_priv *wil = (void *)x; 258 259 wil_dbg_misc(wil, "Connect timeout\n"); 260 261 /* reschedule to thread context - disconnect won't 262 * run from atomic context 263 */ 264 schedule_work(&wil->disconnect_worker); 265 } 266 267 static void wil_scan_timer_fn(ulong x) 268 { 269 struct wil6210_priv *wil = (void *)x; 270 271 clear_bit(wil_status_fwready, wil->status); 272 wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 273 wil->recovery_state = fw_recovery_pending; 274 schedule_work(&wil->fw_error_worker); 275 } 276 277 static int wil_wait_for_recovery(struct wil6210_priv *wil) 278 { 279 if (wait_event_interruptible(wil->wq, wil->recovery_state != 280 fw_recovery_pending)) { 281 wil_err(wil, "Interrupt, canceling recovery\n"); 282 return -ERESTARTSYS; 283 } 284 if (wil->recovery_state != fw_recovery_running) { 285 wil_info(wil, "Recovery cancelled\n"); 286 return -EINTR; 287 } 288 wil_info(wil, "Proceed with recovery\n"); 289 return 0; 290 } 291 292 void wil_set_recovery_state(struct wil6210_priv *wil, int state) 293 { 294 wil_dbg_misc(wil, "%s(%d -> %d)\n", __func__, 295 wil->recovery_state, state); 296 297 wil->recovery_state = state; 298 wake_up_interruptible(&wil->wq); 299 } 300 301 static void wil_fw_error_worker(struct work_struct *work) 302 { 303 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 304 fw_error_worker); 305 struct wireless_dev *wdev = wil->wdev; 306 307 wil_dbg_misc(wil, "fw error worker\n"); 308 309 if (!netif_running(wil_to_ndev(wil))) { 310 wil_info(wil, "No recovery - interface is down\n"); 311 return; 312 } 313 314 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 315 * passed since last recovery attempt 316 */ 317 if (time_is_after_jiffies(wil->last_fw_recovery + 318 WIL6210_FW_RECOVERY_TO)) 319 wil->recovery_count++; 320 else 321 wil->recovery_count = 1; /* fw was alive for a long time */ 322 323 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 324 wil_err(wil, "too many recovery attempts (%d), giving up\n", 325 wil->recovery_count); 326 return; 327 } 328 329 wil->last_fw_recovery = jiffies; 330 331 mutex_lock(&wil->mutex); 332 switch (wdev->iftype) { 333 case NL80211_IFTYPE_STATION: 334 case NL80211_IFTYPE_P2P_CLIENT: 335 case NL80211_IFTYPE_MONITOR: 336 wil_info(wil, "fw error recovery requested (try %d)...\n", 337 wil->recovery_count); 338 if (!no_fw_recovery) 339 wil->recovery_state = fw_recovery_running; 340 if (0 != wil_wait_for_recovery(wil)) 341 break; 342 343 __wil_down(wil); 344 __wil_up(wil); 345 break; 346 case NL80211_IFTYPE_AP: 347 case NL80211_IFTYPE_P2P_GO: 348 wil_info(wil, "No recovery for AP-like interface\n"); 349 /* recovery in these modes is done by upper layers */ 350 break; 351 default: 352 wil_err(wil, "No recovery - unknown interface type %d\n", 353 wdev->iftype); 354 break; 355 } 356 mutex_unlock(&wil->mutex); 357 } 358 359 static int wil_find_free_vring(struct wil6210_priv *wil) 360 { 361 int i; 362 363 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 364 if (!wil->vring_tx[i].va) 365 return i; 366 } 367 return -EINVAL; 368 } 369 370 int wil_bcast_init(struct wil6210_priv *wil) 371 { 372 int ri = wil->bcast_vring, rc; 373 374 if ((ri >= 0) && wil->vring_tx[ri].va) 375 return 0; 376 377 ri = wil_find_free_vring(wil); 378 if (ri < 0) 379 return ri; 380 381 wil->bcast_vring = ri; 382 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order); 383 if (rc) 384 wil->bcast_vring = -1; 385 386 return rc; 387 } 388 389 void wil_bcast_fini(struct wil6210_priv *wil) 390 { 391 int ri = wil->bcast_vring; 392 393 if (ri < 0) 394 return; 395 396 wil->bcast_vring = -1; 397 wil_vring_fini_tx(wil, ri); 398 } 399 400 static void wil_connect_worker(struct work_struct *work) 401 { 402 int rc; 403 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 404 connect_worker); 405 struct net_device *ndev = wil_to_ndev(wil); 406 407 int cid = wil->pending_connect_cid; 408 int ringid = wil_find_free_vring(wil); 409 410 if (cid < 0) { 411 wil_err(wil, "No connection pending\n"); 412 return; 413 } 414 415 wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid); 416 417 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); 418 wil->pending_connect_cid = -1; 419 if (rc == 0) { 420 wil->sta[cid].status = wil_sta_connected; 421 netif_tx_wake_all_queues(ndev); 422 } else { 423 wil->sta[cid].status = wil_sta_unused; 424 } 425 } 426 427 int wil_priv_init(struct wil6210_priv *wil) 428 { 429 uint i; 430 431 wil_dbg_misc(wil, "%s()\n", __func__); 432 433 memset(wil->sta, 0, sizeof(wil->sta)); 434 for (i = 0; i < WIL6210_MAX_CID; i++) 435 spin_lock_init(&wil->sta[i].tid_rx_lock); 436 437 mutex_init(&wil->mutex); 438 mutex_init(&wil->wmi_mutex); 439 mutex_init(&wil->back_rx_mutex); 440 mutex_init(&wil->back_tx_mutex); 441 mutex_init(&wil->probe_client_mutex); 442 443 init_completion(&wil->wmi_ready); 444 init_completion(&wil->wmi_call); 445 446 wil->pending_connect_cid = -1; 447 wil->bcast_vring = -1; 448 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 449 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 450 451 INIT_WORK(&wil->connect_worker, wil_connect_worker); 452 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 453 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 454 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 455 INIT_WORK(&wil->back_rx_worker, wil_back_rx_worker); 456 INIT_WORK(&wil->back_tx_worker, wil_back_tx_worker); 457 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker); 458 459 INIT_LIST_HEAD(&wil->pending_wmi_ev); 460 INIT_LIST_HEAD(&wil->back_rx_pending); 461 INIT_LIST_HEAD(&wil->back_tx_pending); 462 INIT_LIST_HEAD(&wil->probe_client_pending); 463 spin_lock_init(&wil->wmi_ev_lock); 464 init_waitqueue_head(&wil->wq); 465 466 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 467 if (!wil->wmi_wq) 468 return -EAGAIN; 469 470 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 471 if (!wil->wq_service) 472 goto out_wmi_wq; 473 474 wil->last_fw_recovery = jiffies; 475 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 476 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 477 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 478 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 479 480 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 481 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 482 return 0; 483 484 out_wmi_wq: 485 destroy_workqueue(wil->wmi_wq); 486 487 return -EAGAIN; 488 } 489 490 /** 491 * wil6210_disconnect - disconnect one connection 492 * @wil: driver context 493 * @bssid: peer to disconnect, NULL to disconnect all 494 * @reason_code: Reason code for the Disassociation frame 495 * @from_event: whether is invoked from FW event handler 496 * 497 * Disconnect and release associated resources. If invoked not from the 498 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 499 */ 500 void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 501 u16 reason_code, bool from_event) 502 { 503 wil_dbg_misc(wil, "%s()\n", __func__); 504 505 del_timer_sync(&wil->connect_timer); 506 _wil6210_disconnect(wil, bssid, reason_code, from_event); 507 } 508 509 void wil_priv_deinit(struct wil6210_priv *wil) 510 { 511 wil_dbg_misc(wil, "%s()\n", __func__); 512 513 wil_set_recovery_state(wil, fw_recovery_idle); 514 del_timer_sync(&wil->scan_timer); 515 cancel_work_sync(&wil->disconnect_worker); 516 cancel_work_sync(&wil->fw_error_worker); 517 mutex_lock(&wil->mutex); 518 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 519 mutex_unlock(&wil->mutex); 520 wmi_event_flush(wil); 521 wil_back_rx_flush(wil); 522 cancel_work_sync(&wil->back_rx_worker); 523 wil_back_tx_flush(wil); 524 cancel_work_sync(&wil->back_tx_worker); 525 wil_probe_client_flush(wil); 526 cancel_work_sync(&wil->probe_client_worker); 527 destroy_workqueue(wil->wq_service); 528 destroy_workqueue(wil->wmi_wq); 529 } 530 531 /* target operations */ 532 /* register read */ 533 #define R(a) ioread32(wil->csr + HOSTADDR(a)) 534 /* register write. wmb() to make sure it is completed */ 535 #define W(a, v) do { iowrite32(v, wil->csr + HOSTADDR(a)); wmb(); } while (0) 536 /* register set = read, OR, write */ 537 #define S(a, v) W(a, R(a) | v) 538 /* register clear = read, AND with inverted, write */ 539 #define C(a, v) W(a, R(a) & ~v) 540 541 static inline void wil_halt_cpu(struct wil6210_priv *wil) 542 { 543 W(RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 544 W(RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 545 } 546 547 static inline void wil_release_cpu(struct wil6210_priv *wil) 548 { 549 /* Start CPU */ 550 W(RGF_USER_USER_CPU_0, 1); 551 } 552 553 static int wil_target_reset(struct wil6210_priv *wil) 554 { 555 int delay = 0; 556 u32 x, x1 = 0; 557 558 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 559 560 /* Clear MAC link up */ 561 S(RGF_HP_CTRL, BIT(15)); 562 S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 563 S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 564 565 wil_halt_cpu(wil); 566 567 /* clear all boot loader "ready" bits */ 568 W(RGF_USER_BL + offsetof(struct RGF_BL, ready), 0); 569 /* Clear Fw Download notification */ 570 C(RGF_USER_USAGE_6, BIT(0)); 571 572 S(RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 573 /* XTAL stabilization should take about 3ms */ 574 usleep_range(5000, 7000); 575 x = R(RGF_CAF_PLL_LOCK_STATUS); 576 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 577 wil_err(wil, "Xtal stabilization timeout\n" 578 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 579 return -ETIME; 580 } 581 /* switch 10k to XTAL*/ 582 C(RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 583 /* 40 MHz */ 584 C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 585 586 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 587 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 588 589 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 590 W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 591 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 592 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 593 594 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 595 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 596 597 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 598 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 599 W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 600 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 601 602 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 603 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); /* reset A2 PCIE AHB */ 604 605 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 606 607 /* wait until device ready. typical time is 20..80 msec */ 608 do { 609 msleep(RST_DELAY); 610 x = R(RGF_USER_BL + offsetof(struct RGF_BL, ready)); 611 if (x1 != x) { 612 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x); 613 x1 = x; 614 } 615 if (delay++ > RST_COUNT) { 616 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 617 x); 618 return -ETIME; 619 } 620 } while (x != BIT_BL_READY); 621 622 C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 623 624 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 625 S(RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 626 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 627 628 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 629 return 0; 630 } 631 632 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 633 { 634 le32_to_cpus(&r->base); 635 le16_to_cpus(&r->entry_size); 636 le16_to_cpus(&r->size); 637 le32_to_cpus(&r->tail); 638 le32_to_cpus(&r->head); 639 } 640 641 static int wil_get_bl_info(struct wil6210_priv *wil) 642 { 643 struct net_device *ndev = wil_to_ndev(wil); 644 struct RGF_BL bl; 645 646 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), sizeof(bl)); 647 le32_to_cpus(&bl.ready); 648 le32_to_cpus(&bl.version); 649 le32_to_cpus(&bl.rf_type); 650 le32_to_cpus(&bl.baseband_type); 651 652 if (!is_valid_ether_addr(bl.mac_address)) { 653 wil_err(wil, "BL: Invalid MAC %pM\n", bl.mac_address); 654 return -EINVAL; 655 } 656 657 ether_addr_copy(ndev->perm_addr, bl.mac_address); 658 if (!is_valid_ether_addr(ndev->dev_addr)) 659 ether_addr_copy(ndev->dev_addr, bl.mac_address); 660 wil_info(wil, 661 "Boot Loader: ver = %d MAC = %pM RF = 0x%08x bband = 0x%08x\n", 662 bl.version, bl.mac_address, bl.rf_type, bl.baseband_type); 663 664 return 0; 665 } 666 667 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 668 { 669 ulong to = msecs_to_jiffies(1000); 670 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 671 672 if (0 == left) { 673 wil_err(wil, "Firmware not ready\n"); 674 return -ETIME; 675 } else { 676 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 677 jiffies_to_msecs(to-left), wil->hw_version); 678 } 679 return 0; 680 } 681 682 /* 683 * We reset all the structures, and we reset the UMAC. 684 * After calling this routine, you're expected to reload 685 * the firmware. 686 */ 687 int wil_reset(struct wil6210_priv *wil, bool load_fw) 688 { 689 int rc; 690 691 wil_dbg_misc(wil, "%s()\n", __func__); 692 693 if (wil->hw_version == HW_VER_UNKNOWN) 694 return -ENODEV; 695 696 WARN_ON(!mutex_is_locked(&wil->mutex)); 697 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 698 699 if (debug_fw) { 700 static const u8 mac[ETH_ALEN] = { 701 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 702 }; 703 struct net_device *ndev = wil_to_ndev(wil); 704 705 ether_addr_copy(ndev->perm_addr, mac); 706 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 707 return 0; 708 } 709 710 cancel_work_sync(&wil->disconnect_worker); 711 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 712 wil_bcast_fini(wil); 713 714 /* prevent NAPI from being scheduled */ 715 bitmap_zero(wil->status, wil_status_last); 716 717 if (wil->scan_request) { 718 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 719 wil->scan_request); 720 del_timer_sync(&wil->scan_timer); 721 cfg80211_scan_done(wil->scan_request, true); 722 wil->scan_request = NULL; 723 } 724 725 wil_mask_irq(wil); 726 727 wmi_event_flush(wil); 728 729 flush_workqueue(wil->wq_service); 730 flush_workqueue(wil->wmi_wq); 731 732 rc = wil_target_reset(wil); 733 wil_rx_fini(wil); 734 if (rc) 735 return rc; 736 737 rc = wil_get_bl_info(wil); 738 if (rc) 739 return rc; 740 741 if (load_fw) { 742 wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME, 743 WIL_FW2_NAME); 744 745 wil_halt_cpu(wil); 746 /* Loading f/w from the file */ 747 rc = wil_request_firmware(wil, WIL_FW_NAME); 748 if (rc) 749 return rc; 750 rc = wil_request_firmware(wil, WIL_FW2_NAME); 751 if (rc) 752 return rc; 753 754 /* Mark FW as loaded from host */ 755 S(RGF_USER_USAGE_6, 1); 756 757 /* clear any interrupts which on-card-firmware 758 * may have set 759 */ 760 wil6210_clear_irq(wil); 761 /* CAF_ICR - clear and mask */ 762 /* it is W1C, clear by writing back same value */ 763 S(RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 764 W(RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 765 766 wil_release_cpu(wil); 767 } 768 769 /* init after reset */ 770 wil->pending_connect_cid = -1; 771 wil->ap_isolate = 0; 772 reinit_completion(&wil->wmi_ready); 773 reinit_completion(&wil->wmi_call); 774 775 if (load_fw) { 776 wil_configure_interrupt_moderation(wil); 777 wil_unmask_irq(wil); 778 779 /* we just started MAC, wait for FW ready */ 780 rc = wil_wait_for_fw_ready(wil); 781 if (rc == 0) /* check FW is responsive */ 782 rc = wmi_echo(wil); 783 } 784 785 return rc; 786 } 787 788 #undef R 789 #undef W 790 #undef S 791 #undef C 792 793 void wil_fw_error_recovery(struct wil6210_priv *wil) 794 { 795 wil_dbg_misc(wil, "starting fw error recovery\n"); 796 wil->recovery_state = fw_recovery_pending; 797 schedule_work(&wil->fw_error_worker); 798 } 799 800 int __wil_up(struct wil6210_priv *wil) 801 { 802 struct net_device *ndev = wil_to_ndev(wil); 803 struct wireless_dev *wdev = wil->wdev; 804 int rc; 805 806 WARN_ON(!mutex_is_locked(&wil->mutex)); 807 808 rc = wil_reset(wil, true); 809 if (rc) 810 return rc; 811 812 /* Rx VRING. After MAC and beacon */ 813 rc = wil_rx_init(wil, 1 << rx_ring_order); 814 if (rc) 815 return rc; 816 817 switch (wdev->iftype) { 818 case NL80211_IFTYPE_STATION: 819 wil_dbg_misc(wil, "type: STATION\n"); 820 ndev->type = ARPHRD_ETHER; 821 break; 822 case NL80211_IFTYPE_AP: 823 wil_dbg_misc(wil, "type: AP\n"); 824 ndev->type = ARPHRD_ETHER; 825 break; 826 case NL80211_IFTYPE_P2P_CLIENT: 827 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 828 ndev->type = ARPHRD_ETHER; 829 break; 830 case NL80211_IFTYPE_P2P_GO: 831 wil_dbg_misc(wil, "type: P2P_GO\n"); 832 ndev->type = ARPHRD_ETHER; 833 break; 834 case NL80211_IFTYPE_MONITOR: 835 wil_dbg_misc(wil, "type: Monitor\n"); 836 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 837 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 838 break; 839 default: 840 return -EOPNOTSUPP; 841 } 842 843 /* MAC address - pre-requisite for other commands */ 844 wmi_set_mac_address(wil, ndev->dev_addr); 845 846 wil_dbg_misc(wil, "NAPI enable\n"); 847 napi_enable(&wil->napi_rx); 848 napi_enable(&wil->napi_tx); 849 set_bit(wil_status_napi_en, wil->status); 850 851 if (wil->platform_ops.bus_request) 852 wil->platform_ops.bus_request(wil->platform_handle, 853 WIL_MAX_BUS_REQUEST_KBPS); 854 855 return 0; 856 } 857 858 int wil_up(struct wil6210_priv *wil) 859 { 860 int rc; 861 862 wil_dbg_misc(wil, "%s()\n", __func__); 863 864 mutex_lock(&wil->mutex); 865 rc = __wil_up(wil); 866 mutex_unlock(&wil->mutex); 867 868 return rc; 869 } 870 871 int __wil_down(struct wil6210_priv *wil) 872 { 873 int iter = WAIT_FOR_DISCONNECT_TIMEOUT_MS / 874 WAIT_FOR_DISCONNECT_INTERVAL_MS; 875 876 WARN_ON(!mutex_is_locked(&wil->mutex)); 877 878 if (wil->platform_ops.bus_request) 879 wil->platform_ops.bus_request(wil->platform_handle, 0); 880 881 wil_disable_irq(wil); 882 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 883 napi_disable(&wil->napi_rx); 884 napi_disable(&wil->napi_tx); 885 wil_dbg_misc(wil, "NAPI disable\n"); 886 } 887 wil_enable_irq(wil); 888 889 if (wil->scan_request) { 890 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 891 wil->scan_request); 892 del_timer_sync(&wil->scan_timer); 893 cfg80211_scan_done(wil->scan_request, true); 894 wil->scan_request = NULL; 895 } 896 897 if (test_bit(wil_status_fwconnected, wil->status) || 898 test_bit(wil_status_fwconnecting, wil->status)) 899 wmi_send(wil, WMI_DISCONNECT_CMDID, NULL, 0); 900 901 /* make sure wil is idle (not connected) */ 902 mutex_unlock(&wil->mutex); 903 while (iter--) { 904 int idle = !test_bit(wil_status_fwconnected, wil->status) && 905 !test_bit(wil_status_fwconnecting, wil->status); 906 if (idle) 907 break; 908 msleep(WAIT_FOR_DISCONNECT_INTERVAL_MS); 909 } 910 mutex_lock(&wil->mutex); 911 912 if (!iter) 913 wil_err(wil, "timeout waiting for idle FW/HW\n"); 914 915 wil_reset(wil, false); 916 917 return 0; 918 } 919 920 int wil_down(struct wil6210_priv *wil) 921 { 922 int rc; 923 924 wil_dbg_misc(wil, "%s()\n", __func__); 925 926 wil_set_recovery_state(wil, fw_recovery_idle); 927 mutex_lock(&wil->mutex); 928 rc = __wil_down(wil); 929 mutex_unlock(&wil->mutex); 930 931 return rc; 932 } 933 934 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 935 { 936 int i; 937 int rc = -ENOENT; 938 939 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 940 if ((wil->sta[i].status != wil_sta_unused) && 941 ether_addr_equal(wil->sta[i].addr, mac)) { 942 rc = i; 943 break; 944 } 945 } 946 947 return rc; 948 } 949