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 2 options: 207 * - bssid == NULL 208 * - bssid is our MAC address 209 */ 210 if (bssid && memcmp(ndev->dev_addr, bssid, ETH_ALEN)) { 211 cid = wil_find_cid(wil, bssid); 212 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 213 bssid, cid, reason_code); 214 if (cid >= 0) /* disconnect 1 peer */ 215 wil_disconnect_cid(wil, cid, reason_code, from_event); 216 } else { /* all */ 217 wil_dbg_misc(wil, "Disconnect all\n"); 218 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 219 wil_disconnect_cid(wil, cid, reason_code, from_event); 220 } 221 222 /* link state */ 223 switch (wdev->iftype) { 224 case NL80211_IFTYPE_STATION: 225 case NL80211_IFTYPE_P2P_CLIENT: 226 wil_bcast_fini(wil); 227 netif_tx_stop_all_queues(ndev); 228 netif_carrier_off(ndev); 229 230 if (test_bit(wil_status_fwconnected, wil->status)) { 231 clear_bit(wil_status_fwconnected, wil->status); 232 cfg80211_disconnected(ndev, reason_code, 233 NULL, 0, false, GFP_KERNEL); 234 } else if (test_bit(wil_status_fwconnecting, wil->status)) { 235 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 236 WLAN_STATUS_UNSPECIFIED_FAILURE, 237 GFP_KERNEL); 238 } 239 clear_bit(wil_status_fwconnecting, wil->status); 240 break; 241 default: 242 break; 243 } 244 } 245 246 static void wil_disconnect_worker(struct work_struct *work) 247 { 248 struct wil6210_priv *wil = container_of(work, 249 struct wil6210_priv, disconnect_worker); 250 251 mutex_lock(&wil->mutex); 252 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false); 253 mutex_unlock(&wil->mutex); 254 } 255 256 static void wil_connect_timer_fn(ulong x) 257 { 258 struct wil6210_priv *wil = (void *)x; 259 260 wil_dbg_misc(wil, "Connect timeout\n"); 261 262 /* reschedule to thread context - disconnect won't 263 * run from atomic context 264 */ 265 schedule_work(&wil->disconnect_worker); 266 } 267 268 static void wil_scan_timer_fn(ulong x) 269 { 270 struct wil6210_priv *wil = (void *)x; 271 272 clear_bit(wil_status_fwready, wil->status); 273 wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 274 wil_fw_error_recovery(wil); 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 static inline void wil_halt_cpu(struct wil6210_priv *wil) 532 { 533 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 534 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 535 } 536 537 static inline void wil_release_cpu(struct wil6210_priv *wil) 538 { 539 /* Start CPU */ 540 wil_w(wil, RGF_USER_USER_CPU_0, 1); 541 } 542 543 static int wil_target_reset(struct wil6210_priv *wil) 544 { 545 int delay = 0; 546 u32 x, x1 = 0; 547 548 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 549 550 /* Clear MAC link up */ 551 wil_s(wil, RGF_HP_CTRL, BIT(15)); 552 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 553 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 554 555 wil_halt_cpu(wil); 556 557 /* clear all boot loader "ready" bits */ 558 wil_w(wil, RGF_USER_BL + 559 offsetof(struct bl_dedicated_registers_v0, boot_loader_ready), 0); 560 /* Clear Fw Download notification */ 561 wil_c(wil, RGF_USER_USAGE_6, BIT(0)); 562 563 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 564 /* XTAL stabilization should take about 3ms */ 565 usleep_range(5000, 7000); 566 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS); 567 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 568 wil_err(wil, "Xtal stabilization timeout\n" 569 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 570 return -ETIME; 571 } 572 /* switch 10k to XTAL*/ 573 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 574 /* 40 MHz */ 575 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 576 577 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 578 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 579 580 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 581 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 582 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 583 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 584 585 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 586 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 587 588 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 589 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 590 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 591 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 592 593 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 594 /* reset A2 PCIE AHB */ 595 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 596 597 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 598 599 /* wait until device ready. typical time is 20..80 msec */ 600 do { 601 msleep(RST_DELAY); 602 x = wil_r(wil, RGF_USER_BL + 603 offsetof(struct bl_dedicated_registers_v0, 604 boot_loader_ready)); 605 if (x1 != x) { 606 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x); 607 x1 = x; 608 } 609 if (delay++ > RST_COUNT) { 610 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 611 x); 612 return -ETIME; 613 } 614 } while (x != BL_READY); 615 616 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 617 618 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 619 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 620 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 621 622 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 623 return 0; 624 } 625 626 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 627 { 628 le32_to_cpus(&r->base); 629 le16_to_cpus(&r->entry_size); 630 le16_to_cpus(&r->size); 631 le32_to_cpus(&r->tail); 632 le32_to_cpus(&r->head); 633 } 634 635 static int wil_get_bl_info(struct wil6210_priv *wil) 636 { 637 struct net_device *ndev = wil_to_ndev(wil); 638 union { 639 struct bl_dedicated_registers_v0 bl0; 640 struct bl_dedicated_registers_v1 bl1; 641 } bl; 642 u32 bl_ver; 643 u8 *mac; 644 u16 rf_status; 645 646 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), 647 sizeof(bl)); 648 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version); 649 mac = bl.bl0.mac_address; 650 651 if (bl_ver == 0) { 652 le32_to_cpus(&bl.bl0.rf_type); 653 le32_to_cpus(&bl.bl0.baseband_type); 654 rf_status = 0; /* actually, unknown */ 655 wil_info(wil, 656 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n", 657 bl_ver, mac, 658 bl.bl0.rf_type, bl.bl0.baseband_type); 659 wil_info(wil, "Boot Loader build unknown for struct v0\n"); 660 } else { 661 le16_to_cpus(&bl.bl1.rf_type); 662 rf_status = le16_to_cpu(bl.bl1.rf_status); 663 le32_to_cpus(&bl.bl1.baseband_type); 664 le16_to_cpus(&bl.bl1.bl_version_subminor); 665 le16_to_cpus(&bl.bl1.bl_version_build); 666 wil_info(wil, 667 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n", 668 bl_ver, mac, 669 bl.bl1.rf_type, rf_status, 670 bl.bl1.baseband_type); 671 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n", 672 bl.bl1.bl_version_major, bl.bl1.bl_version_minor, 673 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build); 674 } 675 676 if (!is_valid_ether_addr(mac)) { 677 wil_err(wil, "BL: Invalid MAC %pM\n", mac); 678 return -EINVAL; 679 } 680 681 ether_addr_copy(ndev->perm_addr, mac); 682 if (!is_valid_ether_addr(ndev->dev_addr)) 683 ether_addr_copy(ndev->dev_addr, mac); 684 685 if (rf_status) {/* bad RF cable? */ 686 wil_err(wil, "RF communication error 0x%04x", 687 rf_status); 688 return -EAGAIN; 689 } 690 691 return 0; 692 } 693 694 static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err) 695 { 696 u32 bl_assert_code, bl_assert_blink, bl_magic_number; 697 u32 bl_ver = wil_r(wil, RGF_USER_BL + 698 offsetof(struct bl_dedicated_registers_v0, 699 boot_loader_struct_version)); 700 701 if (bl_ver < 2) 702 return; 703 704 bl_assert_code = wil_r(wil, RGF_USER_BL + 705 offsetof(struct bl_dedicated_registers_v1, 706 bl_assert_code)); 707 bl_assert_blink = wil_r(wil, RGF_USER_BL + 708 offsetof(struct bl_dedicated_registers_v1, 709 bl_assert_blink)); 710 bl_magic_number = wil_r(wil, RGF_USER_BL + 711 offsetof(struct bl_dedicated_registers_v1, 712 bl_magic_number)); 713 714 if (is_err) { 715 wil_err(wil, 716 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 717 bl_assert_code, bl_assert_blink, bl_magic_number); 718 } else { 719 wil_dbg_misc(wil, 720 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n", 721 bl_assert_code, bl_assert_blink, bl_magic_number); 722 } 723 } 724 725 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 726 { 727 ulong to = msecs_to_jiffies(1000); 728 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 729 730 if (0 == left) { 731 wil_err(wil, "Firmware not ready\n"); 732 return -ETIME; 733 } else { 734 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 735 jiffies_to_msecs(to-left), wil->hw_version); 736 } 737 return 0; 738 } 739 740 /* 741 * We reset all the structures, and we reset the UMAC. 742 * After calling this routine, you're expected to reload 743 * the firmware. 744 */ 745 int wil_reset(struct wil6210_priv *wil, bool load_fw) 746 { 747 int rc; 748 749 wil_dbg_misc(wil, "%s()\n", __func__); 750 751 WARN_ON(!mutex_is_locked(&wil->mutex)); 752 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 753 754 if (debug_fw) { 755 static const u8 mac[ETH_ALEN] = { 756 0x00, 0xde, 0xad, 0x12, 0x34, 0x56, 757 }; 758 struct net_device *ndev = wil_to_ndev(wil); 759 760 ether_addr_copy(ndev->perm_addr, mac); 761 ether_addr_copy(ndev->dev_addr, ndev->perm_addr); 762 return 0; 763 } 764 765 if (wil->hw_version == HW_VER_UNKNOWN) 766 return -ENODEV; 767 768 cancel_work_sync(&wil->disconnect_worker); 769 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 770 wil_bcast_fini(wil); 771 772 /* prevent NAPI from being scheduled */ 773 bitmap_zero(wil->status, wil_status_last); 774 775 if (wil->scan_request) { 776 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 777 wil->scan_request); 778 del_timer_sync(&wil->scan_timer); 779 cfg80211_scan_done(wil->scan_request, true); 780 wil->scan_request = NULL; 781 } 782 783 wil_mask_irq(wil); 784 785 wmi_event_flush(wil); 786 787 flush_workqueue(wil->wq_service); 788 flush_workqueue(wil->wmi_wq); 789 790 wil_bl_crash_info(wil, false); 791 rc = wil_target_reset(wil); 792 wil_rx_fini(wil); 793 if (rc) { 794 wil_bl_crash_info(wil, true); 795 return rc; 796 } 797 798 rc = wil_get_bl_info(wil); 799 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */ 800 rc = 0; 801 if (rc) 802 return rc; 803 804 if (load_fw) { 805 wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME, 806 WIL_FW2_NAME); 807 808 wil_halt_cpu(wil); 809 /* Loading f/w from the file */ 810 rc = wil_request_firmware(wil, WIL_FW_NAME); 811 if (rc) 812 return rc; 813 rc = wil_request_firmware(wil, WIL_FW2_NAME); 814 if (rc) 815 return rc; 816 817 /* Mark FW as loaded from host */ 818 wil_s(wil, RGF_USER_USAGE_6, 1); 819 820 /* clear any interrupts which on-card-firmware 821 * may have set 822 */ 823 wil6210_clear_irq(wil); 824 /* CAF_ICR - clear and mask */ 825 /* it is W1C, clear by writing back same value */ 826 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 827 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 828 829 wil_release_cpu(wil); 830 } 831 832 /* init after reset */ 833 wil->pending_connect_cid = -1; 834 wil->ap_isolate = 0; 835 reinit_completion(&wil->wmi_ready); 836 reinit_completion(&wil->wmi_call); 837 838 if (load_fw) { 839 wil_configure_interrupt_moderation(wil); 840 wil_unmask_irq(wil); 841 842 /* we just started MAC, wait for FW ready */ 843 rc = wil_wait_for_fw_ready(wil); 844 if (rc == 0) /* check FW is responsive */ 845 rc = wmi_echo(wil); 846 } 847 848 return rc; 849 } 850 851 void wil_fw_error_recovery(struct wil6210_priv *wil) 852 { 853 wil_dbg_misc(wil, "starting fw error recovery\n"); 854 wil->recovery_state = fw_recovery_pending; 855 schedule_work(&wil->fw_error_worker); 856 } 857 858 int __wil_up(struct wil6210_priv *wil) 859 { 860 struct net_device *ndev = wil_to_ndev(wil); 861 struct wireless_dev *wdev = wil->wdev; 862 int rc; 863 864 WARN_ON(!mutex_is_locked(&wil->mutex)); 865 866 rc = wil_reset(wil, true); 867 if (rc) 868 return rc; 869 870 /* Rx VRING. After MAC and beacon */ 871 rc = wil_rx_init(wil, 1 << rx_ring_order); 872 if (rc) 873 return rc; 874 875 switch (wdev->iftype) { 876 case NL80211_IFTYPE_STATION: 877 wil_dbg_misc(wil, "type: STATION\n"); 878 ndev->type = ARPHRD_ETHER; 879 break; 880 case NL80211_IFTYPE_AP: 881 wil_dbg_misc(wil, "type: AP\n"); 882 ndev->type = ARPHRD_ETHER; 883 break; 884 case NL80211_IFTYPE_P2P_CLIENT: 885 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 886 ndev->type = ARPHRD_ETHER; 887 break; 888 case NL80211_IFTYPE_P2P_GO: 889 wil_dbg_misc(wil, "type: P2P_GO\n"); 890 ndev->type = ARPHRD_ETHER; 891 break; 892 case NL80211_IFTYPE_MONITOR: 893 wil_dbg_misc(wil, "type: Monitor\n"); 894 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 895 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 896 break; 897 default: 898 return -EOPNOTSUPP; 899 } 900 901 /* MAC address - pre-requisite for other commands */ 902 wmi_set_mac_address(wil, ndev->dev_addr); 903 904 wil_dbg_misc(wil, "NAPI enable\n"); 905 napi_enable(&wil->napi_rx); 906 napi_enable(&wil->napi_tx); 907 set_bit(wil_status_napi_en, wil->status); 908 909 if (wil->platform_ops.bus_request) 910 wil->platform_ops.bus_request(wil->platform_handle, 911 WIL_MAX_BUS_REQUEST_KBPS); 912 913 return 0; 914 } 915 916 int wil_up(struct wil6210_priv *wil) 917 { 918 int rc; 919 920 wil_dbg_misc(wil, "%s()\n", __func__); 921 922 mutex_lock(&wil->mutex); 923 rc = __wil_up(wil); 924 mutex_unlock(&wil->mutex); 925 926 return rc; 927 } 928 929 int __wil_down(struct wil6210_priv *wil) 930 { 931 int iter = WAIT_FOR_DISCONNECT_TIMEOUT_MS / 932 WAIT_FOR_DISCONNECT_INTERVAL_MS; 933 934 WARN_ON(!mutex_is_locked(&wil->mutex)); 935 936 if (wil->platform_ops.bus_request) 937 wil->platform_ops.bus_request(wil->platform_handle, 0); 938 939 wil_disable_irq(wil); 940 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 941 napi_disable(&wil->napi_rx); 942 napi_disable(&wil->napi_tx); 943 wil_dbg_misc(wil, "NAPI disable\n"); 944 } 945 wil_enable_irq(wil); 946 947 if (wil->scan_request) { 948 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 949 wil->scan_request); 950 del_timer_sync(&wil->scan_timer); 951 cfg80211_scan_done(wil->scan_request, true); 952 wil->scan_request = NULL; 953 } 954 955 if (test_bit(wil_status_fwconnected, wil->status) || 956 test_bit(wil_status_fwconnecting, wil->status)) 957 wmi_send(wil, WMI_DISCONNECT_CMDID, NULL, 0); 958 959 /* make sure wil is idle (not connected) */ 960 mutex_unlock(&wil->mutex); 961 while (iter--) { 962 int idle = !test_bit(wil_status_fwconnected, wil->status) && 963 !test_bit(wil_status_fwconnecting, wil->status); 964 if (idle) 965 break; 966 msleep(WAIT_FOR_DISCONNECT_INTERVAL_MS); 967 } 968 mutex_lock(&wil->mutex); 969 970 if (!iter) 971 wil_err(wil, "timeout waiting for idle FW/HW\n"); 972 973 wil_reset(wil, false); 974 975 return 0; 976 } 977 978 int wil_down(struct wil6210_priv *wil) 979 { 980 int rc; 981 982 wil_dbg_misc(wil, "%s()\n", __func__); 983 984 wil_set_recovery_state(wil, fw_recovery_idle); 985 mutex_lock(&wil->mutex); 986 rc = __wil_down(wil); 987 mutex_unlock(&wil->mutex); 988 989 return rc; 990 } 991 992 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 993 { 994 int i; 995 int rc = -ENOENT; 996 997 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 998 if ((wil->sta[i].status != wil_sta_unused) && 999 ether_addr_equal(wil->sta[i].addr, mac)) { 1000 rc = i; 1001 break; 1002 } 1003 } 1004 1005 return rc; 1006 } 1007