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 #include "boot_loader.h" 25 26 #define WAIT_FOR_DISCONNECT_TIMEOUT_MS 2000 27 #define WAIT_FOR_DISCONNECT_INTERVAL_MS 10 28 29 bool debug_fw; /* = false; */ 30 module_param(debug_fw, bool, S_IRUGO); 31 MODULE_PARM_DESC(debug_fw, " do not perform card reset. For FW debug"); 32 33 bool no_fw_recovery; 34 module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR); 35 MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery"); 36 37 /* if not set via modparam, will be set to default value of 1/8 of 38 * rx ring size during init flow 39 */ 40 unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT; 41 module_param(rx_ring_overflow_thrsh, ushort, S_IRUGO); 42 MODULE_PARM_DESC(rx_ring_overflow_thrsh, 43 " RX ring overflow threshold in descriptors."); 44 45 /* We allow allocation of more than 1 page buffers to support large packets. 46 * It is suboptimal behavior performance wise in case MTU above page size. 47 */ 48 unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 49 static int mtu_max_set(const char *val, const struct kernel_param *kp) 50 { 51 int ret; 52 53 /* sets mtu_max directly. no need to restore it in case of 54 * illegal value since we assume this will fail insmod 55 */ 56 ret = param_set_uint(val, kp); 57 if (ret) 58 return ret; 59 60 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU) 61 ret = -EINVAL; 62 63 return ret; 64 } 65 66 static const struct kernel_param_ops mtu_max_ops = { 67 .set = mtu_max_set, 68 .get = param_get_uint, 69 }; 70 71 module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, S_IRUGO); 72 MODULE_PARM_DESC(mtu_max, " Max MTU value."); 73 74 static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT; 75 static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT; 76 static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT; 77 78 static int ring_order_set(const char *val, const struct kernel_param *kp) 79 { 80 int ret; 81 uint x; 82 83 ret = kstrtouint(val, 0, &x); 84 if (ret) 85 return ret; 86 87 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX)) 88 return -EINVAL; 89 90 *((uint *)kp->arg) = x; 91 92 return 0; 93 } 94 95 static const struct kernel_param_ops ring_order_ops = { 96 .set = ring_order_set, 97 .get = param_get_uint, 98 }; 99 100 module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, S_IRUGO); 101 MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order"); 102 module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, S_IRUGO); 103 MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order"); 104 module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, S_IRUGO); 105 MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order"); 106 107 #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 108 #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 109 110 /* 111 * Due to a hardware issue, 112 * one has to read/write to/from NIC in 32-bit chunks; 113 * regular memcpy_fromio and siblings will 114 * not work on 64-bit platform - it uses 64-bit transactions 115 * 116 * Force 32-bit transactions to enable NIC on 64-bit platforms 117 * 118 * To avoid byte swap on big endian host, __raw_{read|write}l 119 * should be used - {read|write}l would swap bytes to provide 120 * little endian on PCI value in host endianness. 121 */ 122 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 123 size_t count) 124 { 125 u32 *d = dst; 126 const volatile u32 __iomem *s = src; 127 128 /* size_t is unsigned, if (count%4 != 0) it will wrap */ 129 for (count += 4; count > 4; count -= 4) 130 *d++ = __raw_readl(s++); 131 } 132 133 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, 134 size_t count) 135 { 136 volatile u32 __iomem *d = dst; 137 const u32 *s = src; 138 139 for (count += 4; count > 4; count -= 4) 140 __raw_writel(*s++, d++); 141 } 142 143 static void wil_disconnect_cid(struct wil6210_priv *wil, int cid, 144 u16 reason_code, bool from_event) 145 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) 146 { 147 uint i; 148 struct net_device *ndev = wil_to_ndev(wil); 149 struct wireless_dev *wdev = wil->wdev; 150 struct wil_sta_info *sta = &wil->sta[cid]; 151 152 might_sleep(); 153 wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid, 154 sta->status); 155 156 if (sta->status != wil_sta_unused) { 157 if (!from_event) 158 wmi_disconnect_sta(wil, sta->addr, reason_code); 159 160 switch (wdev->iftype) { 161 case NL80211_IFTYPE_AP: 162 case NL80211_IFTYPE_P2P_GO: 163 /* AP-like interface */ 164 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 165 break; 166 default: 167 break; 168 } 169 sta->status = wil_sta_unused; 170 } 171 172 for (i = 0; i < WIL_STA_TID_NUM; i++) { 173 struct wil_tid_ampdu_rx *r; 174 175 spin_lock_bh(&sta->tid_rx_lock); 176 177 r = sta->tid_rx[i]; 178 sta->tid_rx[i] = NULL; 179 wil_tid_ampdu_rx_free(wil, r); 180 181 spin_unlock_bh(&sta->tid_rx_lock); 182 } 183 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 184 if (wil->vring2cid_tid[i][0] == cid) 185 wil_vring_fini_tx(wil, i); 186 } 187 memset(&sta->stats, 0, sizeof(sta->stats)); 188 } 189 190 static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 191 u16 reason_code, bool from_event) 192 { 193 int cid = -ENOENT; 194 struct net_device *ndev = wil_to_ndev(wil); 195 struct wireless_dev *wdev = wil->wdev; 196 197 might_sleep(); 198 wil_dbg_misc(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid, 199 reason_code, from_event ? "+" : "-"); 200 201 /* Cases are: 202 * - disconnect single STA, still connected 203 * - disconnect single STA, already disconnected 204 * - disconnect all 205 * 206 * For "disconnect all", there are 3 options: 207 * - bssid == NULL 208 * - bssid is broadcast address (ff:ff:ff:ff:ff:ff) 209 * - bssid is our MAC address 210 */ 211 if (bssid && !is_broadcast_ether_addr(bssid) && 212 !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) { 213 cid = wil_find_cid(wil, bssid); 214 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 215 bssid, cid, reason_code); 216 if (cid >= 0) /* disconnect 1 peer */ 217 wil_disconnect_cid(wil, cid, reason_code, from_event); 218 } else { /* all */ 219 wil_dbg_misc(wil, "Disconnect all\n"); 220 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 221 wil_disconnect_cid(wil, cid, reason_code, from_event); 222 } 223 224 /* link state */ 225 switch (wdev->iftype) { 226 case NL80211_IFTYPE_STATION: 227 case NL80211_IFTYPE_P2P_CLIENT: 228 wil_bcast_fini(wil); 229 netif_tx_stop_all_queues(ndev); 230 netif_carrier_off(ndev); 231 232 if (test_bit(wil_status_fwconnected, wil->status)) { 233 clear_bit(wil_status_fwconnected, wil->status); 234 cfg80211_disconnected(ndev, reason_code, 235 NULL, 0, false, GFP_KERNEL); 236 } else if (test_bit(wil_status_fwconnecting, wil->status)) { 237 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 238 WLAN_STATUS_UNSPECIFIED_FAILURE, 239 GFP_KERNEL); 240 } 241 clear_bit(wil_status_fwconnecting, wil->status); 242 break; 243 default: 244 break; 245 } 246 } 247 248 static void wil_disconnect_worker(struct work_struct *work) 249 { 250 struct wil6210_priv *wil = container_of(work, 251 struct wil6210_priv, disconnect_worker); 252 253 mutex_lock(&wil->mutex); 254 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false); 255 mutex_unlock(&wil->mutex); 256 } 257 258 static void wil_connect_timer_fn(ulong x) 259 { 260 struct wil6210_priv *wil = (void *)x; 261 262 wil_dbg_misc(wil, "Connect timeout\n"); 263 264 /* reschedule to thread context - disconnect won't 265 * run from atomic context 266 */ 267 schedule_work(&wil->disconnect_worker); 268 } 269 270 static void wil_scan_timer_fn(ulong x) 271 { 272 struct wil6210_priv *wil = (void *)x; 273 274 clear_bit(wil_status_fwready, wil->status); 275 wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 276 wil_fw_error_recovery(wil); 277 } 278 279 static int wil_wait_for_recovery(struct wil6210_priv *wil) 280 { 281 if (wait_event_interruptible(wil->wq, wil->recovery_state != 282 fw_recovery_pending)) { 283 wil_err(wil, "Interrupt, canceling recovery\n"); 284 return -ERESTARTSYS; 285 } 286 if (wil->recovery_state != fw_recovery_running) { 287 wil_info(wil, "Recovery cancelled\n"); 288 return -EINTR; 289 } 290 wil_info(wil, "Proceed with recovery\n"); 291 return 0; 292 } 293 294 void wil_set_recovery_state(struct wil6210_priv *wil, int state) 295 { 296 wil_dbg_misc(wil, "%s(%d -> %d)\n", __func__, 297 wil->recovery_state, state); 298 299 wil->recovery_state = state; 300 wake_up_interruptible(&wil->wq); 301 } 302 303 static void wil_fw_error_worker(struct work_struct *work) 304 { 305 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 306 fw_error_worker); 307 struct wireless_dev *wdev = wil->wdev; 308 309 wil_dbg_misc(wil, "fw error worker\n"); 310 311 if (!netif_running(wil_to_ndev(wil))) { 312 wil_info(wil, "No recovery - interface is down\n"); 313 return; 314 } 315 316 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 317 * passed since last recovery attempt 318 */ 319 if (time_is_after_jiffies(wil->last_fw_recovery + 320 WIL6210_FW_RECOVERY_TO)) 321 wil->recovery_count++; 322 else 323 wil->recovery_count = 1; /* fw was alive for a long time */ 324 325 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 326 wil_err(wil, "too many recovery attempts (%d), giving up\n", 327 wil->recovery_count); 328 return; 329 } 330 331 wil->last_fw_recovery = jiffies; 332 333 mutex_lock(&wil->mutex); 334 switch (wdev->iftype) { 335 case NL80211_IFTYPE_STATION: 336 case NL80211_IFTYPE_P2P_CLIENT: 337 case NL80211_IFTYPE_MONITOR: 338 wil_info(wil, "fw error recovery requested (try %d)...\n", 339 wil->recovery_count); 340 if (!no_fw_recovery) 341 wil->recovery_state = fw_recovery_running; 342 if (0 != wil_wait_for_recovery(wil)) 343 break; 344 345 __wil_down(wil); 346 __wil_up(wil); 347 break; 348 case NL80211_IFTYPE_AP: 349 case NL80211_IFTYPE_P2P_GO: 350 wil_info(wil, "No recovery for AP-like interface\n"); 351 /* recovery in these modes is done by upper layers */ 352 break; 353 default: 354 wil_err(wil, "No recovery - unknown interface type %d\n", 355 wdev->iftype); 356 break; 357 } 358 mutex_unlock(&wil->mutex); 359 } 360 361 static int wil_find_free_vring(struct wil6210_priv *wil) 362 { 363 int i; 364 365 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 366 if (!wil->vring_tx[i].va) 367 return i; 368 } 369 return -EINVAL; 370 } 371 372 int wil_bcast_init(struct wil6210_priv *wil) 373 { 374 int ri = wil->bcast_vring, rc; 375 376 if ((ri >= 0) && wil->vring_tx[ri].va) 377 return 0; 378 379 ri = wil_find_free_vring(wil); 380 if (ri < 0) 381 return ri; 382 383 wil->bcast_vring = ri; 384 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order); 385 if (rc) 386 wil->bcast_vring = -1; 387 388 return rc; 389 } 390 391 void wil_bcast_fini(struct wil6210_priv *wil) 392 { 393 int ri = wil->bcast_vring; 394 395 if (ri < 0) 396 return; 397 398 wil->bcast_vring = -1; 399 wil_vring_fini_tx(wil, ri); 400 } 401 402 static void wil_connect_worker(struct work_struct *work) 403 { 404 int rc; 405 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 406 connect_worker); 407 struct net_device *ndev = wil_to_ndev(wil); 408 409 int cid = wil->pending_connect_cid; 410 int ringid = wil_find_free_vring(wil); 411 412 if (cid < 0) { 413 wil_err(wil, "No connection pending\n"); 414 return; 415 } 416 417 wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid); 418 419 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); 420 wil->pending_connect_cid = -1; 421 if (rc == 0) { 422 wil->sta[cid].status = wil_sta_connected; 423 netif_tx_wake_all_queues(ndev); 424 } else { 425 wil->sta[cid].status = wil_sta_unused; 426 } 427 } 428 429 int wil_priv_init(struct wil6210_priv *wil) 430 { 431 uint i; 432 433 wil_dbg_misc(wil, "%s()\n", __func__); 434 435 memset(wil->sta, 0, sizeof(wil->sta)); 436 for (i = 0; i < WIL6210_MAX_CID; i++) 437 spin_lock_init(&wil->sta[i].tid_rx_lock); 438 439 mutex_init(&wil->mutex); 440 mutex_init(&wil->wmi_mutex); 441 mutex_init(&wil->back_rx_mutex); 442 mutex_init(&wil->back_tx_mutex); 443 mutex_init(&wil->probe_client_mutex); 444 445 init_completion(&wil->wmi_ready); 446 init_completion(&wil->wmi_call); 447 448 wil->pending_connect_cid = -1; 449 wil->bcast_vring = -1; 450 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 451 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 452 453 INIT_WORK(&wil->connect_worker, wil_connect_worker); 454 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 455 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 456 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 457 INIT_WORK(&wil->back_rx_worker, wil_back_rx_worker); 458 INIT_WORK(&wil->back_tx_worker, wil_back_tx_worker); 459 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker); 460 461 INIT_LIST_HEAD(&wil->pending_wmi_ev); 462 INIT_LIST_HEAD(&wil->back_rx_pending); 463 INIT_LIST_HEAD(&wil->back_tx_pending); 464 INIT_LIST_HEAD(&wil->probe_client_pending); 465 spin_lock_init(&wil->wmi_ev_lock); 466 init_waitqueue_head(&wil->wq); 467 468 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 469 if (!wil->wmi_wq) 470 return -EAGAIN; 471 472 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 473 if (!wil->wq_service) 474 goto out_wmi_wq; 475 476 wil->last_fw_recovery = jiffies; 477 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 478 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 479 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 480 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 481 482 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 483 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 484 return 0; 485 486 out_wmi_wq: 487 destroy_workqueue(wil->wmi_wq); 488 489 return -EAGAIN; 490 } 491 492 /** 493 * wil6210_disconnect - disconnect one connection 494 * @wil: driver context 495 * @bssid: peer to disconnect, NULL to disconnect all 496 * @reason_code: Reason code for the Disassociation frame 497 * @from_event: whether is invoked from FW event handler 498 * 499 * Disconnect and release associated resources. If invoked not from the 500 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 501 */ 502 void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 503 u16 reason_code, bool from_event) 504 { 505 wil_dbg_misc(wil, "%s()\n", __func__); 506 507 del_timer_sync(&wil->connect_timer); 508 _wil6210_disconnect(wil, bssid, reason_code, from_event); 509 } 510 511 void wil_priv_deinit(struct wil6210_priv *wil) 512 { 513 wil_dbg_misc(wil, "%s()\n", __func__); 514 515 wil_set_recovery_state(wil, fw_recovery_idle); 516 del_timer_sync(&wil->scan_timer); 517 cancel_work_sync(&wil->disconnect_worker); 518 cancel_work_sync(&wil->fw_error_worker); 519 mutex_lock(&wil->mutex); 520 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 521 mutex_unlock(&wil->mutex); 522 wmi_event_flush(wil); 523 wil_back_rx_flush(wil); 524 cancel_work_sync(&wil->back_rx_worker); 525 wil_back_tx_flush(wil); 526 cancel_work_sync(&wil->back_tx_worker); 527 wil_probe_client_flush(wil); 528 cancel_work_sync(&wil->probe_client_worker); 529 destroy_workqueue(wil->wq_service); 530 destroy_workqueue(wil->wmi_wq); 531 } 532 533 static inline void wil_halt_cpu(struct wil6210_priv *wil) 534 { 535 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 536 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 537 } 538 539 static inline void wil_release_cpu(struct wil6210_priv *wil) 540 { 541 /* Start CPU */ 542 wil_w(wil, RGF_USER_USER_CPU_0, 1); 543 } 544 545 static int wil_target_reset(struct wil6210_priv *wil) 546 { 547 int delay = 0; 548 u32 x, x1 = 0; 549 550 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 551 552 /* Clear MAC link up */ 553 wil_s(wil, RGF_HP_CTRL, BIT(15)); 554 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 555 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 556 557 wil_halt_cpu(wil); 558 559 /* clear all boot loader "ready" bits */ 560 wil_w(wil, RGF_USER_BL + 561 offsetof(struct bl_dedicated_registers_v0, boot_loader_ready), 0); 562 /* Clear Fw Download notification */ 563 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 564 565 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 566 /* XTAL stabilization should take about 3ms */ 567 usleep_range(5000, 7000); 568 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 569 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 570 wil_err(wil, "Xtal stabilization timeout\n" 571 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 572 return -ETIME; 573 } 574 /* switch 10k to XTAL*/ 575 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 576 /* 40 MHz */ 577 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 578 579 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 580 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 581 582 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 583 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 584 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 585 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 586 587 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 588 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 589 590 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 591 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 592 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 593 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 594 595 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 596 /* reset A2 PCIE AHB */ 597 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 598 599 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 600 601 /* wait until device ready. typical time is 20..80 msec */ 602 do { 603 msleep(RST_DELAY); 604 x = wil_r(wil, RGF_USER_BL + 605 offsetof(struct bl_dedicated_registers_v0, 606 boot_loader_ready)); 607 if (x1 != x) { 608 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x); 609 x1 = x; 610 } 611 if (delay++ > RST_COUNT) { 612 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 613 x); 614 return -ETIME; 615 } 616 } while (x != BL_READY); 617 618 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 619 620 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 621 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 622 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 623 624 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 625 return 0; 626 } 627 628 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 629 { 630 le32_to_cpus(&r->base); 631 le16_to_cpus(&r->entry_size); 632 le16_to_cpus(&r->size); 633 le32_to_cpus(&r->tail); 634 le32_to_cpus(&r->head); 635 } 636 637 static int wil_get_bl_info(struct wil6210_priv *wil) 638 { 639 struct net_device *ndev = wil_to_ndev(wil); 640 union { 641 struct bl_dedicated_registers_v0 bl0; 642 struct bl_dedicated_registers_v1 bl1; 643 } bl; 644 u32 bl_ver; 645 u8 *mac; 646 u16 rf_status; 647 648 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 649 sizeof(bl)); 650 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 651 mac = bl.bl0.mac_address; 652 653 if (bl_ver == 0) { 654 le32_to_cpus(&bl.bl0.rf_type); 655 le32_to_cpus(&bl.bl0.baseband_type); 656 rf_status = 0; /* actually, unknown */ 657 wil_info(wil, 658 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 659 bl_ver, mac, 660 bl.bl0.rf_type, bl.bl0.baseband_type); 661 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 662 } else { 663 le16_to_cpus(&bl.bl1.rf_type); 664 rf_status = le16_to_cpu(bl.bl1.rf_status); 665 le32_to_cpus(&bl.bl1.baseband_type); 666 le16_to_cpus(&bl.bl1.bl_version_subminor); 667 le16_to_cpus(&bl.bl1.bl_version_build); 668 wil_info(wil, 669 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 670 bl_ver, mac, 671 bl.bl1.rf_type, rf_status, 672 bl.bl1.baseband_type); 673 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 674 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 675 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 676 } 677 678 if (!is_valid_ether_addr(mac)) { 679 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 680 return -EINVAL; 681 } 682 683 ether_addr_copy(ndev->perm_addr, mac); 684 if (!is_valid_ether_addr(ndev->dev_addr)) 685 ether_addr_copy(ndev->dev_addr, mac); 686 687 if (rf_status) {/* bad RF cable? */ 688 wil_err(wil, "RF communication error 0x%04x", 689 rf_status); 690 return -EAGAIN; 691 } 692 693 return 0; 694 } 695 696 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 697 { 698 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 699 u32 bl_ver = wil_r(wil, RGF_USER_BL + 700 offsetof(struct bl_dedicated_registers_v0, 701 boot_loader_struct_version)); 702 703 if (bl_ver < 2) 704 return; 705 706 bl_assert_code = wil_r(wil, RGF_USER_BL + 707 offsetof(struct bl_dedicated_registers_v1, 708 bl_assert_code)); 709 bl_assert_blink = wil_r(wil, RGF_USER_BL + 710 offsetof(struct bl_dedicated_registers_v1, 711 bl_assert_blink)); 712 bl_magic_number = wil_r(wil, RGF_USER_BL + 713 offsetof(struct bl_dedicated_registers_v1, 714 bl_magic_number)); 715 716 if (is_err) { 717 wil_err(wil, 718 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 719 bl_assert_code, bl_assert_blink, bl_magic_number); 720 } else { 721 wil_dbg_misc(wil, 722 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 723 bl_assert_code, bl_assert_blink, bl_magic_number); 724 } 725 } 726 727 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 728 { 729 ulong to = msecs_to_jiffies(1000); 730 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 731 732 if (0 == left) { 733 wil_err(wil, "Firmware not ready\n"); 734 return -ETIME; 735 } else { 736 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 737 jiffies_to_msecs(to-left), wil->hw_version); 738 } 739 return 0; 740 } 741 742 /* 743 * We reset all the structures, and we reset the UMAC. 744 * After calling this routine, you're expected to reload 745 * the firmware. 746 */ 747 int wil_reset(struct wil6210_priv *wil, bool load_fw) 748 { 749 int rc; 750 751 wil_dbg_misc(wil, "%s()\n", __func__); 752 753 WARN_ON(!mutex_is_locked(&wil->mutex)); 754 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 755 756 if (debug_fw) { 757 static const u8 mac[ETH_ALEN] = { 758 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 759 }; 760 struct net_device *ndev = wil_to_ndev(wil); 761 762 ether_addr_copy(ndev->perm_addr, mac); 763 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 764 return 0; 765 } 766 767 if (wil->hw_version == HW_VER_UNKNOWN) 768 return -ENODEV; 769 770 set_bit(wil_status_resetting, wil->status); 771 772 cancel_work_sync(&wil->disconnect_worker); 773 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 774 wil_bcast_fini(wil); 775 776 /* prevent NAPI from being scheduled */ 777 bitmap_zero(wil->status, wil_status_last); 778 779 if (wil->scan_request) { 780 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 781 wil->scan_request); 782 del_timer_sync(&wil->scan_timer); 783 cfg80211_scan_done(wil->scan_request, true); 784 wil->scan_request = NULL; 785 } 786 787 wil_mask_irq(wil); 788 789 wmi_event_flush(wil); 790 791 flush_workqueue(wil->wq_service); 792 flush_workqueue(wil->wmi_wq); 793 794 wil_bl_crash_info(wil, false); 795 rc = wil_target_reset(wil); 796 wil_rx_fini(wil); 797 if (rc) { 798 wil_bl_crash_info(wil, true); 799 return rc; 800 } 801 802 rc = wil_get_bl_info(wil); 803 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */ 804 rc = 0; 805 if (rc) 806 return rc; 807 808 if (load_fw) { 809 wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME, 810 WIL_FW2_NAME); 811 812 wil_halt_cpu(wil); 813 /* Loading f/w from the file */ 814 rc = wil_request_firmware(wil, WIL_FW_NAME); 815 if (rc) 816 return rc; 817 rc = wil_request_firmware(wil, WIL_FW2_NAME); 818 if (rc) 819 return rc; 820 821 /* Mark FW as loaded from host */ 822 wil_s(wil, RGF_USER_USAGE_6, 1); 823 824 /* clear any interrupts which on-card-firmware 825 * may have set 826 */ 827 wil6210_clear_irq(wil); 828 /* CAF_ICR - clear and mask */ 829 /* it is W1C, clear by writing back same value */ 830 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 831 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 832 833 wil_release_cpu(wil); 834 } 835 836 /* init after reset */ 837 wil->pending_connect_cid = -1; 838 wil->ap_isolate = 0; 839 reinit_completion(&wil->wmi_ready); 840 reinit_completion(&wil->wmi_call); 841 842 if (load_fw) { 843 wil_configure_interrupt_moderation(wil); 844 wil_unmask_irq(wil); 845 846 /* we just started MAC, wait for FW ready */ 847 rc = wil_wait_for_fw_ready(wil); 848 if (rc == 0) /* check FW is responsive */ 849 rc = wmi_echo(wil); 850 } 851 852 return rc; 853 } 854 855 void wil_fw_error_recovery(struct wil6210_priv *wil) 856 { 857 wil_dbg_misc(wil, "starting fw error recovery\n"); 858 859 if (test_bit(wil_status_resetting, wil->status)) { 860 wil_info(wil, "Reset already in progress\n"); 861 return; 862 } 863 864 wil->recovery_state = fw_recovery_pending; 865 schedule_work(&wil->fw_error_worker); 866 } 867 868 int __wil_up(struct wil6210_priv *wil) 869 { 870 struct net_device *ndev = wil_to_ndev(wil); 871 struct wireless_dev *wdev = wil->wdev; 872 int rc; 873 874 WARN_ON(!mutex_is_locked(&wil->mutex)); 875 876 rc = wil_reset(wil, true); 877 if (rc) 878 return rc; 879 880 /* Rx VRING. After MAC and beacon */ 881 rc = wil_rx_init(wil, 1 << rx_ring_order); 882 if (rc) 883 return rc; 884 885 switch (wdev->iftype) { 886 case NL80211_IFTYPE_STATION: 887 wil_dbg_misc(wil, "type: STATION\n"); 888 ndev->type = ARPHRD_ETHER; 889 break; 890 case NL80211_IFTYPE_AP: 891 wil_dbg_misc(wil, "type: AP\n"); 892 ndev->type = ARPHRD_ETHER; 893 break; 894 case NL80211_IFTYPE_P2P_CLIENT: 895 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 896 ndev->type = ARPHRD_ETHER; 897 break; 898 case NL80211_IFTYPE_P2P_GO: 899 wil_dbg_misc(wil, "type: P2P_GO\n"); 900 ndev->type = ARPHRD_ETHER; 901 break; 902 case NL80211_IFTYPE_MONITOR: 903 wil_dbg_misc(wil, "type: Monitor\n"); 904 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 905 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 906 break; 907 default: 908 return -EOPNOTSUPP; 909 } 910 911 /* MAC address - pre-requisite for other commands */ 912 wmi_set_mac_address(wil, ndev->dev_addr); 913 914 wil_dbg_misc(wil, "NAPI enable\n"); 915 napi_enable(&wil->napi_rx); 916 napi_enable(&wil->napi_tx); 917 set_bit(wil_status_napi_en, wil->status); 918 919 if (wil->platform_ops.bus_request) 920 wil->platform_ops.bus_request(wil->platform_handle, 921 WIL_MAX_BUS_REQUEST_KBPS); 922 923 return 0; 924 } 925 926 int wil_up(struct wil6210_priv *wil) 927 { 928 int rc; 929 930 wil_dbg_misc(wil, "%s()\n", __func__); 931 932 mutex_lock(&wil->mutex); 933 rc = __wil_up(wil); 934 mutex_unlock(&wil->mutex); 935 936 return rc; 937 } 938 939 int __wil_down(struct wil6210_priv *wil) 940 { 941 int iter = WAIT_FOR_DISCONNECT_TIMEOUT_MS / 942 WAIT_FOR_DISCONNECT_INTERVAL_MS; 943 944 WARN_ON(!mutex_is_locked(&wil->mutex)); 945 946 if (wil->platform_ops.bus_request) 947 wil->platform_ops.bus_request(wil->platform_handle, 0); 948 949 wil_disable_irq(wil); 950 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 951 napi_disable(&wil->napi_rx); 952 napi_disable(&wil->napi_tx); 953 wil_dbg_misc(wil, "NAPI disable\n"); 954 } 955 wil_enable_irq(wil); 956 957 if (wil->scan_request) { 958 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 959 wil->scan_request); 960 del_timer_sync(&wil->scan_timer); 961 cfg80211_scan_done(wil->scan_request, true); 962 wil->scan_request = NULL; 963 } 964 965 if (test_bit(wil_status_fwconnected, wil->status) || 966 test_bit(wil_status_fwconnecting, wil->status)) 967 wmi_send(wil, WMI_DISCONNECT_CMDID, NULL, 0); 968 969 /* make sure wil is idle (not connected) */ 970 mutex_unlock(&wil->mutex); 971 while (iter--) { 972 int idle = !test_bit(wil_status_fwconnected, wil->status) && 973 !test_bit(wil_status_fwconnecting, wil->status); 974 if (idle) 975 break; 976 msleep(WAIT_FOR_DISCONNECT_INTERVAL_MS); 977 } 978 mutex_lock(&wil->mutex); 979 980 if (!iter) 981 wil_err(wil, "timeout waiting for idle FW/HW\n"); 982 983 wil_reset(wil, false); 984 985 return 0; 986 } 987 988 int wil_down(struct wil6210_priv *wil) 989 { 990 int rc; 991 992 wil_dbg_misc(wil, "%s()\n", __func__); 993 994 wil_set_recovery_state(wil, fw_recovery_idle); 995 mutex_lock(&wil->mutex); 996 rc = __wil_down(wil); 997 mutex_unlock(&wil->mutex); 998 999 return rc; 1000 } 1001 1002 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 1003 { 1004 int i; 1005 int rc = -ENOENT; 1006 1007 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1008 if ((wil->sta[i].status != wil_sta_unused) && 1009 ether_addr_equal(wil->sta[i].addr, mac)) { 1010 rc = i; 1011 break; 1012 } 1013 } 1014 1015 return rc; 1016 } 1017