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 28bool no_fw_recovery; 29module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR); 30MODULE_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 */ 35unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT; 36module_param(rx_ring_overflow_thrsh, ushort, S_IRUGO); 37MODULE_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 */ 43unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 44static 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 61static struct kernel_param_ops mtu_max_ops = { 62 .set = mtu_max_set, 63 .get = param_get_uint, 64}; 65 66module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, S_IRUGO); 67MODULE_PARM_DESC(mtu_max, " Max MTU value."); 68 69static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT; 70static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT; 71static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT; 72 73static int ring_order_set(const char *val, const struct kernel_param *kp) 74{ 75 int ret; 76 uint x; 77 78 ret = kstrtouint(val, 0, &x); 79 if (ret) 80 return ret; 81 82 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX)) 83 return -EINVAL; 84 85 *((uint *)kp->arg) = x; 86 87 return 0; 88} 89 90static struct kernel_param_ops ring_order_ops = { 91 .set = ring_order_set, 92 .get = param_get_uint, 93}; 94 95module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, S_IRUGO); 96MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order"); 97module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, S_IRUGO); 98MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order"); 99 100#define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 101#define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 102 103/* 104 * Due to a hardware issue, 105 * one has to read/write to/from NIC in 32-bit chunks; 106 * regular memcpy_fromio and siblings will 107 * not work on 64-bit platform - it uses 64-bit transactions 108 * 109 * Force 32-bit transactions to enable NIC on 64-bit platforms 110 * 111 * To avoid byte swap on big endian host, __raw_{read|write}l 112 * should be used - {read|write}l would swap bytes to provide 113 * little endian on PCI value in host endianness. 114 */ 115void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 116 size_t count) 117{ 118 u32 *d = dst; 119 const volatile u32 __iomem *s = src; 120 121 /* size_t is unsigned, if (count%4 != 0) it will wrap */ 122 for (count += 4; count > 4; count -= 4) 123 *d++ = __raw_readl(s++); 124} 125 126void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, 127 size_t count) 128{ 129 volatile u32 __iomem *d = dst; 130 const u32 *s = src; 131 132 for (count += 4; count > 4; count -= 4) 133 __raw_writel(*s++, d++); 134} 135 136static void wil_disconnect_cid(struct wil6210_priv *wil, int cid, 137 u16 reason_code, bool from_event) 138__acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) 139{ 140 uint i; 141 struct net_device *ndev = wil_to_ndev(wil); 142 struct wireless_dev *wdev = wil->wdev; 143 struct wil_sta_info *sta = &wil->sta[cid]; 144 145 might_sleep(); 146 wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid, 147 sta->status); 148 149 sta->data_port_open = false; 150 if (sta->status != wil_sta_unused) { 151 if (!from_event) 152 wmi_disconnect_sta(wil, sta->addr, reason_code); 153 154 switch (wdev->iftype) { 155 case NL80211_IFTYPE_AP: 156 case NL80211_IFTYPE_P2P_GO: 157 /* AP-like interface */ 158 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 159 break; 160 default: 161 break; 162 } 163 sta->status = wil_sta_unused; 164 } 165 166 for (i = 0; i < WIL_STA_TID_NUM; i++) { 167 struct wil_tid_ampdu_rx *r; 168 169 spin_lock_bh(&sta->tid_rx_lock); 170 171 r = sta->tid_rx[i]; 172 sta->tid_rx[i] = NULL; 173 wil_tid_ampdu_rx_free(wil, r); 174 175 spin_unlock_bh(&sta->tid_rx_lock); 176 } 177 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 178 if (wil->vring2cid_tid[i][0] == cid) 179 wil_vring_fini_tx(wil, i); 180 } 181 memset(&sta->stats, 0, sizeof(sta->stats)); 182} 183 184static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 185 u16 reason_code, bool from_event) 186{ 187 int cid = -ENOENT; 188 struct net_device *ndev = wil_to_ndev(wil); 189 struct wireless_dev *wdev = wil->wdev; 190 191 might_sleep(); 192 wil_dbg_misc(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid, 193 reason_code, from_event ? "+" : "-"); 194 195 /* Cases are: 196 * - disconnect single STA, still connected 197 * - disconnect single STA, already disconnected 198 * - disconnect all 199 * 200 * For "disconnect all", there are 2 options: 201 * - bssid == NULL 202 * - bssid is our MAC address 203 */ 204 if (bssid && memcmp(ndev->dev_addr, bssid, ETH_ALEN)) { 205 cid = wil_find_cid(wil, bssid); 206 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 207 bssid, cid, reason_code); 208 if (cid >= 0) /* disconnect 1 peer */ 209 wil_disconnect_cid(wil, cid, reason_code, from_event); 210 } else { /* all */ 211 wil_dbg_misc(wil, "Disconnect all\n"); 212 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 213 wil_disconnect_cid(wil, cid, reason_code, from_event); 214 } 215 216 /* link state */ 217 switch (wdev->iftype) { 218 case NL80211_IFTYPE_STATION: 219 case NL80211_IFTYPE_P2P_CLIENT: 220 wil_bcast_fini(wil); 221 netif_tx_stop_all_queues(ndev); 222 netif_carrier_off(ndev); 223 224 if (test_bit(wil_status_fwconnected, wil->status)) { 225 clear_bit(wil_status_fwconnected, wil->status); 226 cfg80211_disconnected(ndev, reason_code, 227 NULL, 0, GFP_KERNEL); 228 } else if (test_bit(wil_status_fwconnecting, wil->status)) { 229 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 230 WLAN_STATUS_UNSPECIFIED_FAILURE, 231 GFP_KERNEL); 232 } 233 clear_bit(wil_status_fwconnecting, wil->status); 234 break; 235 default: 236 break; 237 } 238} 239 240static void wil_disconnect_worker(struct work_struct *work) 241{ 242 struct wil6210_priv *wil = container_of(work, 243 struct wil6210_priv, disconnect_worker); 244 245 mutex_lock(&wil->mutex); 246 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false); 247 mutex_unlock(&wil->mutex); 248} 249 250static void wil_connect_timer_fn(ulong x) 251{ 252 struct wil6210_priv *wil = (void *)x; 253 254 wil_dbg_misc(wil, "Connect timeout\n"); 255 256 /* reschedule to thread context - disconnect won't 257 * run from atomic context 258 */ 259 schedule_work(&wil->disconnect_worker); 260} 261 262static void wil_scan_timer_fn(ulong x) 263{ 264 struct wil6210_priv *wil = (void *)x; 265 266 clear_bit(wil_status_fwready, wil->status); 267 wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 268 wil->recovery_state = fw_recovery_pending; 269 schedule_work(&wil->fw_error_worker); 270} 271 272static int wil_wait_for_recovery(struct wil6210_priv *wil) 273{ 274 if (wait_event_interruptible(wil->wq, wil->recovery_state != 275 fw_recovery_pending)) { 276 wil_err(wil, "Interrupt, canceling recovery\n"); 277 return -ERESTARTSYS; 278 } 279 if (wil->recovery_state != fw_recovery_running) { 280 wil_info(wil, "Recovery cancelled\n"); 281 return -EINTR; 282 } 283 wil_info(wil, "Proceed with recovery\n"); 284 return 0; 285} 286 287void wil_set_recovery_state(struct wil6210_priv *wil, int state) 288{ 289 wil_dbg_misc(wil, "%s(%d -> %d)\n", __func__, 290 wil->recovery_state, state); 291 292 wil->recovery_state = state; 293 wake_up_interruptible(&wil->wq); 294} 295 296static void wil_fw_error_worker(struct work_struct *work) 297{ 298 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 299 fw_error_worker); 300 struct wireless_dev *wdev = wil->wdev; 301 302 wil_dbg_misc(wil, "fw error worker\n"); 303 304 if (!netif_running(wil_to_ndev(wil))) { 305 wil_info(wil, "No recovery - interface is down\n"); 306 return; 307 } 308 309 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 310 * passed since last recovery attempt 311 */ 312 if (time_is_after_jiffies(wil->last_fw_recovery + 313 WIL6210_FW_RECOVERY_TO)) 314 wil->recovery_count++; 315 else 316 wil->recovery_count = 1; /* fw was alive for a long time */ 317 318 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 319 wil_err(wil, "too many recovery attempts (%d), giving up\n", 320 wil->recovery_count); 321 return; 322 } 323 324 wil->last_fw_recovery = jiffies; 325 326 mutex_lock(&wil->mutex); 327 switch (wdev->iftype) { 328 case NL80211_IFTYPE_STATION: 329 case NL80211_IFTYPE_P2P_CLIENT: 330 case NL80211_IFTYPE_MONITOR: 331 wil_info(wil, "fw error recovery requested (try %d)...\n", 332 wil->recovery_count); 333 if (!no_fw_recovery) 334 wil->recovery_state = fw_recovery_running; 335 if (0 != wil_wait_for_recovery(wil)) 336 break; 337 338 __wil_down(wil); 339 __wil_up(wil); 340 break; 341 case NL80211_IFTYPE_AP: 342 case NL80211_IFTYPE_P2P_GO: 343 wil_info(wil, "No recovery for AP-like interface\n"); 344 /* recovery in these modes is done by upper layers */ 345 break; 346 default: 347 wil_err(wil, "No recovery - unknown interface type %d\n", 348 wdev->iftype); 349 break; 350 } 351 mutex_unlock(&wil->mutex); 352} 353 354static int wil_find_free_vring(struct wil6210_priv *wil) 355{ 356 int i; 357 358 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 359 if (!wil->vring_tx[i].va) 360 return i; 361 } 362 return -EINVAL; 363} 364 365int wil_bcast_init(struct wil6210_priv *wil) 366{ 367 int ri = wil->bcast_vring, rc; 368 369 if ((ri >= 0) && wil->vring_tx[ri].va) 370 return 0; 371 372 ri = wil_find_free_vring(wil); 373 if (ri < 0) 374 return ri; 375 376 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order); 377 if (rc == 0) 378 wil->bcast_vring = ri; 379 380 return rc; 381} 382 383void wil_bcast_fini(struct wil6210_priv *wil) 384{ 385 int ri = wil->bcast_vring; 386 387 if (ri < 0) 388 return; 389 390 wil->bcast_vring = -1; 391 wil_vring_fini_tx(wil, ri); 392} 393 394static void wil_connect_worker(struct work_struct *work) 395{ 396 int rc; 397 struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 398 connect_worker); 399 struct net_device *ndev = wil_to_ndev(wil); 400 401 int cid = wil->pending_connect_cid; 402 int ringid = wil_find_free_vring(wil); 403 404 if (cid < 0) { 405 wil_err(wil, "No connection pending\n"); 406 return; 407 } 408 409 wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid); 410 411 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); 412 wil->pending_connect_cid = -1; 413 if (rc == 0) { 414 wil->sta[cid].status = wil_sta_connected; 415 netif_tx_wake_all_queues(ndev); 416 } else { 417 wil->sta[cid].status = wil_sta_unused; 418 } 419} 420 421int wil_priv_init(struct wil6210_priv *wil) 422{ 423 uint i; 424 425 wil_dbg_misc(wil, "%s()\n", __func__); 426 427 memset(wil->sta, 0, sizeof(wil->sta)); 428 for (i = 0; i < WIL6210_MAX_CID; i++) 429 spin_lock_init(&wil->sta[i].tid_rx_lock); 430 431 mutex_init(&wil->mutex); 432 mutex_init(&wil->wmi_mutex); 433 mutex_init(&wil->back_rx_mutex); 434 mutex_init(&wil->back_tx_mutex); 435 mutex_init(&wil->probe_client_mutex); 436 437 init_completion(&wil->wmi_ready); 438 init_completion(&wil->wmi_call); 439 440 wil->pending_connect_cid = -1; 441 wil->bcast_vring = -1; 442 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 443 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 444 445 INIT_WORK(&wil->connect_worker, wil_connect_worker); 446 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 447 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 448 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 449 INIT_WORK(&wil->back_rx_worker, wil_back_rx_worker); 450 INIT_WORK(&wil->back_tx_worker, wil_back_tx_worker); 451 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker); 452 453 INIT_LIST_HEAD(&wil->pending_wmi_ev); 454 INIT_LIST_HEAD(&wil->back_rx_pending); 455 INIT_LIST_HEAD(&wil->back_tx_pending); 456 INIT_LIST_HEAD(&wil->probe_client_pending); 457 spin_lock_init(&wil->wmi_ev_lock); 458 init_waitqueue_head(&wil->wq); 459 460 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); 461 if (!wil->wmi_wq) 462 return -EAGAIN; 463 464 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service"); 465 if (!wil->wq_service) 466 goto out_wmi_wq; 467 468 wil->last_fw_recovery = jiffies; 469 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT; 470 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT; 471 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT; 472 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT; 473 474 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT) 475 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT; 476 return 0; 477 478out_wmi_wq: 479 destroy_workqueue(wil->wmi_wq); 480 481 return -EAGAIN; 482} 483 484/** 485 * wil6210_disconnect - disconnect one connection 486 * @wil: driver context 487 * @bssid: peer to disconnect, NULL to disconnect all 488 * @reason_code: Reason code for the Disassociation frame 489 * @from_event: whether is invoked from FW event handler 490 * 491 * Disconnect and release associated resources. If invoked not from the 492 * FW event handler, issue WMI command(s) to trigger MAC disconnect. 493 */ 494void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 495 u16 reason_code, bool from_event) 496{ 497 wil_dbg_misc(wil, "%s()\n", __func__); 498 499 del_timer_sync(&wil->connect_timer); 500 _wil6210_disconnect(wil, bssid, reason_code, from_event); 501} 502 503void wil_priv_deinit(struct wil6210_priv *wil) 504{ 505 wil_dbg_misc(wil, "%s()\n", __func__); 506 507 wil_set_recovery_state(wil, fw_recovery_idle); 508 del_timer_sync(&wil->scan_timer); 509 cancel_work_sync(&wil->disconnect_worker); 510 cancel_work_sync(&wil->fw_error_worker); 511 mutex_lock(&wil->mutex); 512 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 513 mutex_unlock(&wil->mutex); 514 wmi_event_flush(wil); 515 wil_back_rx_flush(wil); 516 cancel_work_sync(&wil->back_rx_worker); 517 wil_back_tx_flush(wil); 518 cancel_work_sync(&wil->back_tx_worker); 519 wil_probe_client_flush(wil); 520 cancel_work_sync(&wil->probe_client_worker); 521 destroy_workqueue(wil->wq_service); 522 destroy_workqueue(wil->wmi_wq); 523} 524 525/* target operations */ 526/* register read */ 527#define R(a) ioread32(wil->csr + HOSTADDR(a)) 528/* register write. wmb() to make sure it is completed */ 529#define W(a, v) do { iowrite32(v, wil->csr + HOSTADDR(a)); wmb(); } while (0) 530/* register set = read, OR, write */ 531#define S(a, v) W(a, R(a) | v) 532/* register clear = read, AND with inverted, write */ 533#define C(a, v) W(a, R(a) & ~v) 534 535static inline void wil_halt_cpu(struct wil6210_priv *wil) 536{ 537 W(RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 538 W(RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 539} 540 541static inline void wil_release_cpu(struct wil6210_priv *wil) 542{ 543 /* Start CPU */ 544 W(RGF_USER_USER_CPU_0, 1); 545} 546 547static int wil_target_reset(struct wil6210_priv *wil) 548{ 549 int delay = 0; 550 u32 x; 551 552 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); 553 554 /* Clear MAC link up */ 555 S(RGF_HP_CTRL, BIT(15)); 556 S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 557 S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 558 559 wil_halt_cpu(wil); 560 561 /* clear all boot loader "ready" bits */ 562 W(RGF_USER_BL + offsetof(struct RGF_BL, ready), 0); 563 /* Clear Fw Download notification */ 564 C(RGF_USER_USAGE_6, BIT(0)); 565 566 S(RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); 567 /* XTAL stabilization should take about 3ms */ 568 usleep_range(5000, 7000); 569 x = R(RGF_CAF_PLL_LOCK_STATUS); 570 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) { 571 wil_err(wil, "Xtal stabilization timeout\n" 572 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x); 573 return -ETIME; 574 } 575 /* switch 10k to XTAL*/ 576 C(RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); 577 /* 40 MHz */ 578 C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); 579 580 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 581 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 582 583 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 584 W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 585 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); 586 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 587 588 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 589 W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 590 591 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 592 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 593 W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 594 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 595 596 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 597 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); /* reset A2 PCIE AHB */ 598 599 W(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 = R(RGF_USER_BL + offsetof(struct RGF_BL, ready)); 605 if (delay++ > RST_COUNT) { 606 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n", 607 x); 608 return -ETIME; 609 } 610 } while (!(x & BIT_BL_READY)); 611 612 C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 613 614 /* enable fix for HW bug related to the SA/DA swap in AP Rx */ 615 S(RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | 616 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); 617 618 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 619 return 0; 620} 621 622void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 623{ 624 le32_to_cpus(&r->base); 625 le16_to_cpus(&r->entry_size); 626 le16_to_cpus(&r->size); 627 le32_to_cpus(&r->tail); 628 le32_to_cpus(&r->head); 629} 630 631static int wil_get_bl_info(struct wil6210_priv *wil) 632{ 633 struct net_device *ndev = wil_to_ndev(wil); 634 struct RGF_BL bl; 635 636 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), sizeof(bl)); 637 le32_to_cpus(&bl.ready); 638 le32_to_cpus(&bl.version); 639 le32_to_cpus(&bl.rf_type); 640 le32_to_cpus(&bl.baseband_type); 641 642 if (!is_valid_ether_addr(bl.mac_address)) { 643 wil_err(wil, "BL: Invalid MAC %pM\n", bl.mac_address); 644 return -EINVAL; 645 } 646 647 ether_addr_copy(ndev->perm_addr, bl.mac_address); 648 if (!is_valid_ether_addr(ndev->dev_addr)) 649 ether_addr_copy(ndev->dev_addr, bl.mac_address); 650 wil_info(wil, 651 "Boot Loader: ver = %d MAC = %pM RF = 0x%08x bband = 0x%08x\n", 652 bl.version, bl.mac_address, bl.rf_type, bl.baseband_type); 653 654 return 0; 655} 656 657static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 658{ 659 ulong to = msecs_to_jiffies(1000); 660 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 661 662 if (0 == left) { 663 wil_err(wil, "Firmware not ready\n"); 664 return -ETIME; 665 } else { 666 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 667 jiffies_to_msecs(to-left), wil->hw_version); 668 } 669 return 0; 670} 671 672/* 673 * We reset all the structures, and we reset the UMAC. 674 * After calling this routine, you're expected to reload 675 * the firmware. 676 */ 677int wil_reset(struct wil6210_priv *wil, bool load_fw) 678{ 679 int rc; 680 681 wil_dbg_misc(wil, "%s()\n", __func__); 682 683 if (wil->hw_version == HW_VER_UNKNOWN) 684 return -ENODEV; 685 686 WARN_ON(!mutex_is_locked(&wil->mutex)); 687 WARN_ON(test_bit(wil_status_napi_en, wil->status)); 688 689 cancel_work_sync(&wil->disconnect_worker); 690 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); 691 wil_bcast_fini(wil); 692 693 /* prevent NAPI from being scheduled */ 694 bitmap_zero(wil->status, wil_status_last); 695 696 if (wil->scan_request) { 697 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 698 wil->scan_request); 699 del_timer_sync(&wil->scan_timer); 700 cfg80211_scan_done(wil->scan_request, true); 701 wil->scan_request = NULL; 702 } 703 704 wil_mask_irq(wil); 705 706 wmi_event_flush(wil); 707 708 flush_workqueue(wil->wq_service); 709 flush_workqueue(wil->wmi_wq); 710 711 rc = wil_target_reset(wil); 712 wil_rx_fini(wil); 713 if (rc) 714 return rc; 715 716 rc = wil_get_bl_info(wil); 717 if (rc) 718 return rc; 719 720 if (load_fw) { 721 wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME, 722 WIL_FW2_NAME); 723 724 wil_halt_cpu(wil); 725 /* Loading f/w from the file */ 726 rc = wil_request_firmware(wil, WIL_FW_NAME); 727 if (rc) 728 return rc; 729 rc = wil_request_firmware(wil, WIL_FW2_NAME); 730 if (rc) 731 return rc; 732 733 /* Mark FW as loaded from host */ 734 S(RGF_USER_USAGE_6, 1); 735 736 /* clear any interrupts which on-card-firmware 737 * may have set 738 */ 739 wil6210_clear_irq(wil); 740 /* CAF_ICR - clear and mask */ 741 /* it is W1C, clear by writing back same value */ 742 S(RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 743 W(RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 744 745 wil_release_cpu(wil); 746 } 747 748 /* init after reset */ 749 wil->pending_connect_cid = -1; 750 wil->ap_isolate = 0; 751 reinit_completion(&wil->wmi_ready); 752 reinit_completion(&wil->wmi_call); 753 754 if (load_fw) { 755 wil_configure_interrupt_moderation(wil); 756 wil_unmask_irq(wil); 757 758 /* we just started MAC, wait for FW ready */ 759 rc = wil_wait_for_fw_ready(wil); 760 if (rc == 0) /* check FW is responsive */ 761 rc = wmi_echo(wil); 762 } 763 764 return rc; 765} 766 767#undef R 768#undef W 769#undef S 770#undef C 771 772void wil_fw_error_recovery(struct wil6210_priv *wil) 773{ 774 wil_dbg_misc(wil, "starting fw error recovery\n"); 775 wil->recovery_state = fw_recovery_pending; 776 schedule_work(&wil->fw_error_worker); 777} 778 779int __wil_up(struct wil6210_priv *wil) 780{ 781 struct net_device *ndev = wil_to_ndev(wil); 782 struct wireless_dev *wdev = wil->wdev; 783 int rc; 784 785 WARN_ON(!mutex_is_locked(&wil->mutex)); 786 787 rc = wil_reset(wil, true); 788 if (rc) 789 return rc; 790 791 /* Rx VRING. After MAC and beacon */ 792 rc = wil_rx_init(wil, 1 << rx_ring_order); 793 if (rc) 794 return rc; 795 796 switch (wdev->iftype) { 797 case NL80211_IFTYPE_STATION: 798 wil_dbg_misc(wil, "type: STATION\n"); 799 ndev->type = ARPHRD_ETHER; 800 break; 801 case NL80211_IFTYPE_AP: 802 wil_dbg_misc(wil, "type: AP\n"); 803 ndev->type = ARPHRD_ETHER; 804 break; 805 case NL80211_IFTYPE_P2P_CLIENT: 806 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 807 ndev->type = ARPHRD_ETHER; 808 break; 809 case NL80211_IFTYPE_P2P_GO: 810 wil_dbg_misc(wil, "type: P2P_GO\n"); 811 ndev->type = ARPHRD_ETHER; 812 break; 813 case NL80211_IFTYPE_MONITOR: 814 wil_dbg_misc(wil, "type: Monitor\n"); 815 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 816 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 817 break; 818 default: 819 return -EOPNOTSUPP; 820 } 821 822 /* MAC address - pre-requisite for other commands */ 823 wmi_set_mac_address(wil, ndev->dev_addr); 824 825 wil_dbg_misc(wil, "NAPI enable\n"); 826 napi_enable(&wil->napi_rx); 827 napi_enable(&wil->napi_tx); 828 set_bit(wil_status_napi_en, wil->status); 829 830 if (wil->platform_ops.bus_request) 831 wil->platform_ops.bus_request(wil->platform_handle, 832 WIL_MAX_BUS_REQUEST_KBPS); 833 834 return 0; 835} 836 837int wil_up(struct wil6210_priv *wil) 838{ 839 int rc; 840 841 wil_dbg_misc(wil, "%s()\n", __func__); 842 843 mutex_lock(&wil->mutex); 844 rc = __wil_up(wil); 845 mutex_unlock(&wil->mutex); 846 847 return rc; 848} 849 850int __wil_down(struct wil6210_priv *wil) 851{ 852 int iter = WAIT_FOR_DISCONNECT_TIMEOUT_MS / 853 WAIT_FOR_DISCONNECT_INTERVAL_MS; 854 855 WARN_ON(!mutex_is_locked(&wil->mutex)); 856 857 if (wil->platform_ops.bus_request) 858 wil->platform_ops.bus_request(wil->platform_handle, 0); 859 860 wil_disable_irq(wil); 861 if (test_and_clear_bit(wil_status_napi_en, wil->status)) { 862 napi_disable(&wil->napi_rx); 863 napi_disable(&wil->napi_tx); 864 wil_dbg_misc(wil, "NAPI disable\n"); 865 } 866 wil_enable_irq(wil); 867 868 if (wil->scan_request) { 869 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 870 wil->scan_request); 871 del_timer_sync(&wil->scan_timer); 872 cfg80211_scan_done(wil->scan_request, true); 873 wil->scan_request = NULL; 874 } 875 876 if (test_bit(wil_status_fwconnected, wil->status) || 877 test_bit(wil_status_fwconnecting, wil->status)) 878 wmi_send(wil, WMI_DISCONNECT_CMDID, NULL, 0); 879 880 /* make sure wil is idle (not connected) */ 881 mutex_unlock(&wil->mutex); 882 while (iter--) { 883 int idle = !test_bit(wil_status_fwconnected, wil->status) && 884 !test_bit(wil_status_fwconnecting, wil->status); 885 if (idle) 886 break; 887 msleep(WAIT_FOR_DISCONNECT_INTERVAL_MS); 888 } 889 mutex_lock(&wil->mutex); 890 891 if (!iter) 892 wil_err(wil, "timeout waiting for idle FW/HW\n"); 893 894 wil_reset(wil, false); 895 896 return 0; 897} 898 899int wil_down(struct wil6210_priv *wil) 900{ 901 int rc; 902 903 wil_dbg_misc(wil, "%s()\n", __func__); 904 905 wil_set_recovery_state(wil, fw_recovery_idle); 906 mutex_lock(&wil->mutex); 907 rc = __wil_down(wil); 908 mutex_unlock(&wil->mutex); 909 910 return rc; 911} 912 913int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 914{ 915 int i; 916 int rc = -ENOENT; 917 918 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 919 if ((wil->sta[i].status != wil_sta_unused) && 920 ether_addr_equal(wil->sta[i].addr, mac)) { 921 rc = i; 922 break; 923 } 924 } 925 926 return rc; 927} 928