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 no_fw_recovery; 29 module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR); 30 MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery"); 31 32 /* if not set via modparam, will be set to default value of 1/8 of 33 * rx ring size during init flow 34 */ 35 unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT; 36 module_param(rx_ring_overflow_thrsh, ushort, S_IRUGO); 37 MODULE_PARM_DESC(rx_ring_overflow_thrsh, 38 " RX ring overflow threshold in descriptors."); 39 40 /* We allow allocation of more than 1 page buffers to support large packets. 41 * It is suboptimal behavior performance wise in case MTU above page size. 42 */ 43 unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 44 static int mtu_max_set(const char *val, const struct kernel_param *kp) 45 { 46 int ret; 47 48 /* sets mtu_max directly. no need to restore it in case of 49 * illegal value since we assume this will fail insmod 50 */ 51 ret = param_set_uint(val, kp); 52 if (ret) 53 return ret; 54 55 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU) 56 ret = -EINVAL; 57 58 return ret; 59 } 60 61 static struct kernel_param_ops mtu_max_ops = { 62 .set = mtu_max_set, 63 .get = param_get_uint, 64 }; 65 66 module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, S_IRUGO); 67 MODULE_PARM_DESC(mtu_max, " Max MTU value."); 68 69 static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT; 70 static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT; 71 72 static int ring_order_set(const char *val, const struct kernel_param *kp) 73 { 74 int ret; 75 uint x; 76 77 ret = kstrtouint(val, 0, &x); 78 if (ret) 79 return ret; 80 81 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX)) 82 return -EINVAL; 83 84 *((uint *)kp->arg) = x; 85 86 return 0; 87 } 88 89 static struct kernel_param_ops ring_order_ops = { 90 .set = ring_order_set, 91 .get = param_get_uint, 92 }; 93 94 module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, S_IRUGO); 95 MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order"); 96 module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, S_IRUGO); 97 MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order"); 98 99 #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 100 #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 101 102 /* 103 * Due to a hardware issue, 104 * one has to read/write to/from NIC in 32-bit chunks; 105 * regular memcpy_fromio and siblings will 106 * not work on 64-bit platform - it uses 64-bit transactions 107 * 108 * Force 32-bit transactions to enable NIC on 64-bit platforms 109 * 110 * To avoid byte swap on big endian host, __raw_{read|write}l 111 * should be used - {read|write}l would swap bytes to provide 112 * little endian on PCI value in host endianness. 113 */ 114 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 115 size_t count) 116 { 117 u32 *d = dst; 118 const volatile u32 __iomem *s = src; 119 120 /* size_t is unsigned, if (count%4 != 0) it will wrap */ 121 for (count += 4; count > 4; count -= 4) 122 *d++ = __raw_readl(s++); 123 } 124 125 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, 126 size_t count) 127 { 128 volatile u32 __iomem *d = dst; 129 const u32 *s = src; 130 131 for (count += 4; count > 4; count -= 4) 132 __raw_writel(*s++, d++); 133 } 134 135 static void wil_disconnect_cid(struct wil6210_priv *wil, int cid, 136 u16 reason_code, bool from_event) 137 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) 138 { 139 uint i; 140 struct net_device *ndev = wil_to_ndev(wil); 141 struct wireless_dev *wdev = wil->wdev; 142 struct wil_sta_info *sta = &wil->sta[cid]; 143 144 might_sleep(); 145 wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid, 146 sta->status); 147 148 sta->data_port_open = false; 149 if (sta->status != wil_sta_unused) { 150 if (!from_event) 151 wmi_disconnect_sta(wil, sta->addr, reason_code); 152 153 switch (wdev->iftype) { 154 case NL80211_IFTYPE_AP: 155 case NL80211_IFTYPE_P2P_GO: 156 /* AP-like interface */ 157 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 158 break; 159 default: 160 break; 161 } 162 sta->status = wil_sta_unused; 163 } 164 165 for (i = 0; i < WIL_STA_TID_NUM; i++) { 166 struct wil_tid_ampdu_rx *r; 167 168 spin_lock_bh(&sta->tid_rx_lock); 169 170 r = sta->tid_rx[i]; 171 sta->tid_rx[i] = NULL; 172 wil_tid_ampdu_rx_free(wil, r); 173 174 spin_unlock_bh(&sta->tid_rx_lock); 175 } 176 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 177 if (wil->vring2cid_tid[i][0] == cid) 178 wil_vring_fini_tx(wil, i); 179 } 180 memset(&sta->stats, 0, sizeof(sta->stats)); 181 } 182 183 static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 184 u16 reason_code, bool from_event) 185 { 186 int cid = -ENOENT; 187 struct net_device *ndev = wil_to_ndev(wil); 188 struct wireless_dev *wdev = wil->wdev; 189 190 might_sleep(); 191 wil_dbg_misc(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid, 192 reason_code, from_event ? "+" : "-"); 193 194 /* Cases are: 195 * - disconnect single STA, still connected 196 * - disconnect single STA, already disconnected 197 * - disconnect all 198 * 199 * For "disconnect all", there are 2 options: 200 * - bssid == NULL 201 * - bssid is our MAC address 202 */ 203 if (bssid && memcmp(ndev->dev_addr, bssid, ETH_ALEN)) { 204 cid = wil_find_cid(wil, bssid); 205 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 206 bssid, cid, reason_code); 207 if (cid >= 0) /* disconnect 1 peer */ 208 wil_disconnect_cid(wil, cid, reason_code, from_event); 209 } else { /* all */ 210 wil_dbg_misc(wil, "Disconnect all\n"); 211 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 212 wil_disconnect_cid(wil, cid, reason_code, from_event); 213 } 214 215 /* link state */ 216 switch (wdev->iftype) { 217 case NL80211_IFTYPE_STATION: 218 case NL80211_IFTYPE_P2P_CLIENT: 219 netif_tx_stop_all_queues(ndev); 220 netif_carrier_off(ndev); 221 222 if (test_bit(wil_status_fwconnected, wil->status)) { 223 clear_bit(wil_status_fwconnected, wil->status); 224 cfg80211_disconnected(ndev, reason_code, 225 NULL, 0, GFP_KERNEL); 226 } else if (test_bit(wil_status_fwconnecting, wil->status)) { 227 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 228 WLAN_STATUS_UNSPECIFIED_FAILURE, 229 GFP_KERNEL); 230 } 231 clear_bit(wil_status_fwconnecting, wil->status); 232 break; 233 default: 234 break; 235 } 236 } 237 238 static void wil_disconnect_worker(struct work_struct *work) 239 { 240 struct wil6210_priv *wil = container_of(work, 241 struct wil6210_priv, disconnect_worker); 242 243 mutex_lock(&wil->mutex); 244 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false); 245 mutex_unlock(&wil->mutex); 246 } 247 248 static void wil_connect_timer_fn(ulong x) 249 { 250 struct wil6210_priv *wil = (void *)x; 251 252 wil_dbg_misc(wil, "Connect timeout\n"); 253 254 /* reschedule to thread context - disconnect won't 255 * run from atomic context 256 */ 257 schedule_work(&wil->disconnect_worker); 258 } 259 260 static void wil_scan_timer_fn(ulong x) 261 { 262 struct wil6210_priv *wil = (void *)x; 263 264 clear_bit(wil_status_fwready, wil->status); 265 wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 266 wil->recovery_state = fw_recovery_pending; 267 schedule_work(&wil->fw_error_worker); 268 } 269 270 static int wil_wait_for_recovery(struct wil6210_priv *wil) 271 { 272 if (wait_event_interruptible(wil->wq, wil->recovery_state != 273 fw_recovery_pending)) { 274 wil_err(wil, "Interrupt, canceling recovery\n"); 275 return -ERESTARTSYS; 276 } 277 if (wil->recovery_state != fw_recovery_running) { 278 wil_info(wil, "Recovery cancelled\n"); 279 return -EINTR; 280 } 281 wil_info(wil, "Proceed with recovery\n"); 282 return 0; 283 } 284 285 void wil_set_recovery_state(struct wil6210_priv *wil, int state) 286 { 287 wil_dbg_misc(wil, "%s(%d -> %d)\n", __func__, 288 wil->recovery_state, state); 289 290 wil->recovery_state = state; 291 wake_up_interruptible(&wil->wq); 292 } 293 294 static void wil_fw_error_worker(struct work_struct *work) 295 { 296 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 297 fw_error_worker); 298 struct wireless_dev *wdev = wil->wdev; 299 300 wil_dbg_misc(wil, "fw error worker\n"); 301 302 if (!netif_running(wil_to_ndev(wil))) { 303 wil_info(wil, "No recovery - interface is down\n"); 304 return; 305 } 306 307 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 308 * passed since last recovery attempt 309 */ 310 if (time_is_after_jiffies(wil->last_fw_recovery + 311 WIL6210_FW_RECOVERY_TO)) 312 wil->recovery_count++; 313 else 314 wil->recovery_count = 1; /* fw was alive for a long time */ 315 316 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 317 wil_err(wil, "too many recovery attempts (%d), giving up\n", 318 wil->recovery_count); 319 return; 320 } 321 322 wil->last_fw_recovery = jiffies; 323 324 mutex_lock(&wil->mutex); 325 switch (wdev->iftype) { 326 case NL80211_IFTYPE_STATION: 327 case NL80211_IFTYPE_P2P_CLIENT: 328 case NL80211_IFTYPE_MONITOR: 329 wil_info(wil, "fw error recovery requested (try %d)...\n", 330 wil->recovery_count); 331 if (!no_fw_recovery) 332 wil->recovery_state = fw_recovery_running; 333 if (0 != wil_wait_for_recovery(wil)) 334 break; 335 336 __wil_down(wil); 337 __wil_up(wil); 338 break; 339 case NL80211_IFTYPE_AP: 340 case NL80211_IFTYPE_P2P_GO: 341 wil_info(wil, "No recovery for AP-like interface\n"); 342 /* recovery in these modes is done by upper layers */ 343 break; 344 default: 345 wil_err(wil, "No recovery - unknown interface type %d\n", 346 wdev->iftype); 347 break; 348 } 349 mutex_unlock(&wil->mutex); 350 } 351 352 static int wil_find_free_vring(struct wil6210_priv *wil) 353 { 354 int i; 355 356 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 357 if (!wil->vring_tx[i].va) 358 return i; 359 } 360 return -EINVAL; 361 } 362 363 static void wil_connect_worker(struct work_struct *work) 364 { 365 int rc; 366 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 367 connect_worker); 368 struct net_device *ndev = wil_to_ndev(wil); 369 370 int cid = wil->pending_connect_cid; 371 int ringid = wil_find_free_vring(wil); 372 373 if (cid < 0) { 374 wil_err(wil, "No connection pending\n"); 375 return; 376 } 377 378 wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid); 379 380 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); 381 wil->pending_connect_cid = -1; 382 if (rc == 0) { 383 wil->sta[cid].status = wil_sta_connected; 384 netif_tx_wake_all_queues(ndev); 385 } else { 386 wil->sta[cid].status = wil_sta_unused; 387 } 388 } 389 390 int wil_priv_init(struct wil6210_priv *wil) 391 { 392 uint i; 393 394 wil_dbg_misc(wil, "%s()\n", __func__); 395 396 memset(wil->sta, 0, sizeof(wil->sta)); 397 for (i = 0; i < WIL6210_MAX_CID; i++) 398 spin_lock_init(&wil->sta[i].tid_rx_lock); 399 400 mutex_init(&wil->mutex); 401 mutex_init(&wil->wmi_mutex); 402 mutex_init(&wil->back_rx_mutex); 403 mutex_init(&wil->back_tx_mutex); 404 mutex_init(&wil->probe_client_mutex); 405 406 init_completion(&wil->wmi_ready); 407 init_completion(&wil->wmi_call); 408 409 wil->pending_connect_cid = -1; 410 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 411 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 412 413 INIT_WORK(&wil->connect_worker, wil_connect_worker); 414 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 415 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 416 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 417 INIT_WORK(&wil->back_rx_worker, wil_back_rx_worker); 418 INIT_WORK(&wil->back_tx_worker, wil_back_tx_worker); 419 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker); 420 421 INIT_LIST_HEAD(&wil->pending_wmi_ev); 422 INIT_LIST_HEAD(&wil->back_rx_pending); 423 INIT_LIST_HEAD(&wil->back_tx_pending); 424 INIT_LIST_HEAD(&wil->probe_client_pending); 425 spin_lock_init(&wil->wmi_ev_lock); 426 init_waitqueue_head(&wil->wq); 427 428 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 429 if (!wil->wmi_wq) 430 return -EAGAIN; 431 432 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 433 if (!wil->wq_service) 434 goto out_wmi_wq; 435 436 wil->last_fw_recovery = jiffies; 437 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 438 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 439 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 440 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 441 442 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 443 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 444 return 0; 445 446 out_wmi_wq: 447 destroy_workqueue(wil->wmi_wq); 448 449 return -EAGAIN; 450 } 451 452 /** 453 * wil6210_disconnect - disconnect one connection 454 * @wil: driver context 455 * @bssid: peer to disconnect, NULL to disconnect all 456 * @reason_code: Reason code for the Disassociation frame 457 * @from_event: whether is invoked from FW event handler 458 * 459 * Disconnect and release associated resources. If invoked not from the 460 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 461 */ 462 void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 463 u16 reason_code, bool from_event) 464 { 465 wil_dbg_misc(wil, "%s()\n", __func__); 466 467 del_timer_sync(&wil->connect_timer); 468 _wil6210_disconnect(wil, bssid, reason_code, from_event); 469 } 470 471 void wil_priv_deinit(struct wil6210_priv *wil) 472 { 473 wil_dbg_misc(wil, "%s()\n", __func__); 474 475 wil_set_recovery_state(wil, fw_recovery_idle); 476 del_timer_sync(&wil->scan_timer); 477 cancel_work_sync(&wil->disconnect_worker); 478 cancel_work_sync(&wil->fw_error_worker); 479 mutex_lock(&wil->mutex); 480 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 481 mutex_unlock(&wil->mutex); 482 wmi_event_flush(wil); 483 wil_back_rx_flush(wil); 484 cancel_work_sync(&wil->back_rx_worker); 485 wil_back_tx_flush(wil); 486 cancel_work_sync(&wil->back_tx_worker); 487 wil_probe_client_flush(wil); 488 cancel_work_sync(&wil->probe_client_worker); 489 destroy_workqueue(wil->wq_service); 490 destroy_workqueue(wil->wmi_wq); 491 } 492 493 /* target operations */ 494 /* register read */ 495 #define R(a) ioread32(wil->csr + HOSTADDR(a)) 496 /* register write. wmb() to make sure it is completed */ 497 #define W(a, v) do { iowrite32(v, wil->csr + HOSTADDR(a)); wmb(); } while (0) 498 /* register set = read, OR, write */ 499 #define S(a, v) W(a, R(a) | v) 500 /* register clear = read, AND with inverted, write */ 501 #define C(a, v) W(a, R(a) & ~v) 502 503 static inline void wil_halt_cpu(struct wil6210_priv *wil) 504 { 505 W(RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 506 W(RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 507 } 508 509 static inline void wil_release_cpu(struct wil6210_priv *wil) 510 { 511 /* Start CPU */ 512 W(RGF_USER_USER_CPU_0, 1); 513 } 514 515 static int wil_target_reset(struct wil6210_priv *wil) 516 { 517 int delay = 0; 518 u32 x; 519 520 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 521 522 /* Clear MAC link up */ 523 S(RGF_HP_CTRL, BIT(15)); 524 S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 525 S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 526 527 wil_halt_cpu(wil); 528 529 /* clear all boot loader "ready" bits */ 530 W(RGF_USER_BL + offsetof(struct RGF_BL, ready), 0); 531 /* Clear Fw Download notification */ 532 C(RGF_USER_USAGE_6, BIT(0)); 533 534 S(RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 535 /* XTAL stabilization should take about 3ms */ 536 usleep_range(5000, 7000); 537 x = R(RGF_CAF_PLL_LOCK_STATUS); 538 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 539 wil_err(wil, "Xtal stabilization timeout\n" 540 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 541 return -ETIME; 542 } 543 /* switch 10k to XTAL*/ 544 C(RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 545 /* 40 MHz */ 546 C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 547 548 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 549 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 550 551 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 552 W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 553 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 554 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 555 556 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 557 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 558 559 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 560 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 561 W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 562 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 563 564 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 565 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); /* reset A2 PCIE AHB */ 566 567 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 568 569 /* wait until device ready. typical time is 20..80 msec */ 570 do { 571 msleep(RST_DELAY); 572 x = R(RGF_USER_BL + offsetof(struct RGF_BL, ready)); 573 if (delay++ > RST_COUNT) { 574 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 575 x); 576 return -ETIME; 577 } 578 } while (!(x & BIT_BL_READY)); 579 580 C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 581 582 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 583 S(RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 584 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 585 586 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 587 return 0; 588 } 589 590 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 591 { 592 le32_to_cpus(&r->base); 593 le16_to_cpus(&r->entry_size); 594 le16_to_cpus(&r->size); 595 le32_to_cpus(&r->tail); 596 le32_to_cpus(&r->head); 597 } 598 599 static int wil_get_bl_info(struct wil6210_priv *wil) 600 { 601 struct net_device *ndev = wil_to_ndev(wil); 602 struct RGF_BL bl; 603 604 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), sizeof(bl)); 605 le32_to_cpus(&bl.ready); 606 le32_to_cpus(&bl.version); 607 le32_to_cpus(&bl.rf_type); 608 le32_to_cpus(&bl.baseband_type); 609 610 if (!is_valid_ether_addr(bl.mac_address)) { 611 wil_err(wil, "BL: Invalid MAC %pM\n", bl.mac_address); 612 return -EINVAL; 613 } 614 615 ether_addr_copy(ndev->perm_addr, bl.mac_address); 616 if (!is_valid_ether_addr(ndev->dev_addr)) 617 ether_addr_copy(ndev->dev_addr, bl.mac_address); 618 wil_info(wil, 619 "Boot Loader: ver = %d MAC = %pM RF = 0x%08x bband = 0x%08x\n", 620 bl.version, bl.mac_address, bl.rf_type, bl.baseband_type); 621 622 return 0; 623 } 624 625 static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 626 { 627 ulong to = msecs_to_jiffies(1000); 628 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 629 630 if (0 == left) { 631 wil_err(wil, "Firmware not ready\n"); 632 return -ETIME; 633 } else { 634 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 635 jiffies_to_msecs(to-left), wil->hw_version); 636 } 637 return 0; 638 } 639 640 /* 641 * We reset all the structures, and we reset the UMAC. 642 * After calling this routine, you're expected to reload 643 * the firmware. 644 */ 645 int wil_reset(struct wil6210_priv *wil, bool load_fw) 646 { 647 int rc; 648 649 wil_dbg_misc(wil, "%s()\n", __func__); 650 651 if (wil->hw_version == HW_VER_UNKNOWN) 652 return -ENODEV; 653 654 WARN_ON(!mutex_is_locked(&wil->mutex)); 655 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 656 657 cancel_work_sync(&wil->disconnect_worker); 658 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 659 660 /* prevent NAPI from being scheduled */ 661 bitmap_zero(wil->status, wil_status_last); 662 663 if (wil->scan_request) { 664 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 665 wil->scan_request); 666 del_timer_sync(&wil->scan_timer); 667 cfg80211_scan_done(wil->scan_request, true); 668 wil->scan_request = NULL; 669 } 670 671 wil_mask_irq(wil); 672 673 wmi_event_flush(wil); 674 675 flush_workqueue(wil->wq_service); 676 flush_workqueue(wil->wmi_wq); 677 678 rc = wil_target_reset(wil); 679 wil_rx_fini(wil); 680 if (rc) 681 return rc; 682 683 rc = wil_get_bl_info(wil); 684 if (rc) 685 return rc; 686 687 if (load_fw) { 688 wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME, 689 WIL_FW2_NAME); 690 691 wil_halt_cpu(wil); 692 /* Loading f/w from the file */ 693 rc = wil_request_firmware(wil, WIL_FW_NAME); 694 if (rc) 695 return rc; 696 rc = wil_request_firmware(wil, WIL_FW2_NAME); 697 if (rc) 698 return rc; 699 700 /* Mark FW as loaded from host */ 701 S(RGF_USER_USAGE_6, 1); 702 703 /* clear any interrupts which on-card-firmware 704 * may have set 705 */ 706 wil6210_clear_irq(wil); 707 /* CAF_ICR - clear and mask */ 708 /* it is W1C, clear by writing back same value */ 709 S(RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 710 W(RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 711 712 wil_release_cpu(wil); 713 } 714 715 /* init after reset */ 716 wil->pending_connect_cid = -1; 717 reinit_completion(&wil->wmi_ready); 718 reinit_completion(&wil->wmi_call); 719 720 if (load_fw) { 721 wil_configure_interrupt_moderation(wil); 722 wil_unmask_irq(wil); 723 724 /* we just started MAC, wait for FW ready */ 725 rc = wil_wait_for_fw_ready(wil); 726 } 727 728 return rc; 729 } 730 731 #undef R 732 #undef W 733 #undef S 734 #undef C 735 736 void wil_fw_error_recovery(struct wil6210_priv *wil) 737 { 738 wil_dbg_misc(wil, "starting fw error recovery\n"); 739 wil->recovery_state = fw_recovery_pending; 740 schedule_work(&wil->fw_error_worker); 741 } 742 743 int __wil_up(struct wil6210_priv *wil) 744 { 745 struct net_device *ndev = wil_to_ndev(wil); 746 struct wireless_dev *wdev = wil->wdev; 747 int rc; 748 749 WARN_ON(!mutex_is_locked(&wil->mutex)); 750 751 rc = wil_reset(wil, true); 752 if (rc) 753 return rc; 754 755 /* Rx VRING. After MAC and beacon */ 756 rc = wil_rx_init(wil, 1 << rx_ring_order); 757 if (rc) 758 return rc; 759 760 switch (wdev->iftype) { 761 case NL80211_IFTYPE_STATION: 762 wil_dbg_misc(wil, "type: STATION\n"); 763 ndev->type = ARPHRD_ETHER; 764 break; 765 case NL80211_IFTYPE_AP: 766 wil_dbg_misc(wil, "type: AP\n"); 767 ndev->type = ARPHRD_ETHER; 768 break; 769 case NL80211_IFTYPE_P2P_CLIENT: 770 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 771 ndev->type = ARPHRD_ETHER; 772 break; 773 case NL80211_IFTYPE_P2P_GO: 774 wil_dbg_misc(wil, "type: P2P_GO\n"); 775 ndev->type = ARPHRD_ETHER; 776 break; 777 case NL80211_IFTYPE_MONITOR: 778 wil_dbg_misc(wil, "type: Monitor\n"); 779 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 780 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 781 break; 782 default: 783 return -EOPNOTSUPP; 784 } 785 786 /* MAC address - pre-requisite for other commands */ 787 wmi_set_mac_address(wil, ndev->dev_addr); 788 789 wil_dbg_misc(wil, "NAPI enable\n"); 790 napi_enable(&wil->napi_rx); 791 napi_enable(&wil->napi_tx); 792 set_bit(wil_status_napi_en, wil->status); 793 794 if (wil->platform_ops.bus_request) 795 wil->platform_ops.bus_request(wil->platform_handle, 796 WIL_MAX_BUS_REQUEST_KBPS); 797 798 return 0; 799 } 800 801 int wil_up(struct wil6210_priv *wil) 802 { 803 int rc; 804 805 wil_dbg_misc(wil, "%s()\n", __func__); 806 807 mutex_lock(&wil->mutex); 808 rc = __wil_up(wil); 809 mutex_unlock(&wil->mutex); 810 811 return rc; 812 } 813 814 int __wil_down(struct wil6210_priv *wil) 815 { 816 int iter = WAIT_FOR_DISCONNECT_TIMEOUT_MS / 817 WAIT_FOR_DISCONNECT_INTERVAL_MS; 818 819 WARN_ON(!mutex_is_locked(&wil->mutex)); 820 821 if (wil->platform_ops.bus_request) 822 wil->platform_ops.bus_request(wil->platform_handle, 0); 823 824 wil_disable_irq(wil); 825 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 826 napi_disable(&wil->napi_rx); 827 napi_disable(&wil->napi_tx); 828 wil_dbg_misc(wil, "NAPI disable\n"); 829 } 830 wil_enable_irq(wil); 831 832 if (wil->scan_request) { 833 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 834 wil->scan_request); 835 del_timer_sync(&wil->scan_timer); 836 cfg80211_scan_done(wil->scan_request, true); 837 wil->scan_request = NULL; 838 } 839 840 if (test_bit(wil_status_fwconnected, wil->status) || 841 test_bit(wil_status_fwconnecting, wil->status)) 842 wmi_send(wil, WMI_DISCONNECT_CMDID, NULL, 0); 843 844 /* make sure wil is idle (not connected) */ 845 mutex_unlock(&wil->mutex); 846 while (iter--) { 847 int idle = !test_bit(wil_status_fwconnected, wil->status) && 848 !test_bit(wil_status_fwconnecting, wil->status); 849 if (idle) 850 break; 851 msleep(WAIT_FOR_DISCONNECT_INTERVAL_MS); 852 } 853 mutex_lock(&wil->mutex); 854 855 if (!iter) 856 wil_err(wil, "timeout waiting for idle FW/HW\n"); 857 858 wil_reset(wil, false); 859 860 return 0; 861 } 862 863 int wil_down(struct wil6210_priv *wil) 864 { 865 int rc; 866 867 wil_dbg_misc(wil, "%s()\n", __func__); 868 869 wil_set_recovery_state(wil, fw_recovery_idle); 870 mutex_lock(&wil->mutex); 871 rc = __wil_down(wil); 872 mutex_unlock(&wil->mutex); 873 874 return rc; 875 } 876 877 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 878 { 879 int i; 880 int rc = -ENOENT; 881 882 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 883 if ((wil->sta[i].status != wil_sta_unused) && 884 ether_addr_equal(wil->sta[i].addr, mac)) { 885 rc = i; 886 break; 887 } 888 } 889 890 return rc; 891 } 892