1 /* 2 * Copyright (c) 2012-2016 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 bool debug_fw; /* = false; */ 27 module_param(debug_fw, bool, S_IRUGO); 28 MODULE_PARM_DESC(debug_fw, " do not perform card reset. For FW debug"); 29 30 bool no_fw_recovery; 31 module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR); 32 MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery"); 33 34 /* if not set via modparam, will be set to default value of 1/8 of 35 * rx ring size during init flow 36 */ 37 unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT; 38 module_param(rx_ring_overflow_thrsh, ushort, S_IRUGO); 39 MODULE_PARM_DESC(rx_ring_overflow_thrsh, 40 " RX ring overflow threshold in descriptors."); 41 42 /* We allow allocation of more than 1 page buffers to support large packets. 43 * It is suboptimal behavior performance wise in case MTU above page size. 44 */ 45 unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD; 46 static int mtu_max_set(const char *val, const struct kernel_param *kp) 47 { 48 int ret; 49 50 /* sets mtu_max directly. no need to restore it in case of 51 * illegal value since we assume this will fail insmod 52 */ 53 ret = param_set_uint(val, kp); 54 if (ret) 55 return ret; 56 57 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU) 58 ret = -EINVAL; 59 60 return ret; 61 } 62 63 static const struct kernel_param_ops mtu_max_ops = { 64 .set = mtu_max_set, 65 .get = param_get_uint, 66 }; 67 68 module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, S_IRUGO); 69 MODULE_PARM_DESC(mtu_max, " Max MTU value."); 70 71 static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT; 72 static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT; 73 static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT; 74 75 static int ring_order_set(const char *val, const struct kernel_param *kp) 76 { 77 int ret; 78 uint x; 79 80 ret = kstrtouint(val, 0, &x); 81 if (ret) 82 return ret; 83 84 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX)) 85 return -EINVAL; 86 87 *((uint *)kp->arg) = x; 88 89 return 0; 90 } 91 92 static const struct kernel_param_ops ring_order_ops = { 93 .set = ring_order_set, 94 .get = param_get_uint, 95 }; 96 97 module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, S_IRUGO); 98 MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order"); 99 module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, S_IRUGO); 100 MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order"); 101 module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, S_IRUGO); 102 MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order"); 103 104 #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 105 #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 106 107 /* 108 * Due to a hardware issue, 109 * one has to read/write to/from NIC in 32-bit chunks; 110 * regular memcpy_fromio and siblings will 111 * not work on 64-bit platform - it uses 64-bit transactions 112 * 113 * Force 32-bit transactions to enable NIC on 64-bit platforms 114 * 115 * To avoid byte swap on big endian host, __raw_{read|write}l 116 * should be used - {read|write}l would swap bytes to provide 117 * little endian on PCI value in host endianness. 118 */ 119 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 120 size_t count) 121 { 122 u32 *d = dst; 123 const volatile u32 __iomem *s = src; 124 125 /* size_t is unsigned, if (count%4 != 0) it will wrap */ 126 for (count += 4; count > 4; count -= 4) 127 *d++ = __raw_readl(s++); 128 } 129 130 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, 131 size_t count) 132 { 133 volatile u32 __iomem *d = dst; 134 const u32 *s = src; 135 136 for (count += 4; count > 4; count -= 4) 137 __raw_writel(*s++, d++); 138 } 139 140 static void wil_disconnect_cid(struct wil6210_priv *wil, int cid, 141 u16 reason_code, bool from_event) 142 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) 143 { 144 uint i; 145 struct net_device *ndev = wil_to_ndev(wil); 146 struct wireless_dev *wdev = wil->wdev; 147 struct wil_sta_info *sta = &wil->sta[cid]; 148 149 might_sleep(); 150 wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid, 151 sta->status); 152 153 if (sta->status != wil_sta_unused) { 154 if (!from_event) 155 wmi_disconnect_sta(wil, sta->addr, reason_code, true); 156 157 switch (wdev->iftype) { 158 case NL80211_IFTYPE_AP: 159 case NL80211_IFTYPE_P2P_GO: 160 /* AP-like interface */ 161 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 162 break; 163 default: 164 break; 165 } 166 sta->status = wil_sta_unused; 167 } 168 169 for (i = 0; i < WIL_STA_TID_NUM; i++) { 170 struct wil_tid_ampdu_rx *r; 171 172 spin_lock_bh(&sta->tid_rx_lock); 173 174 r = sta->tid_rx[i]; 175 sta->tid_rx[i] = NULL; 176 wil_tid_ampdu_rx_free(wil, r); 177 178 spin_unlock_bh(&sta->tid_rx_lock); 179 } 180 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 181 if (wil->vring2cid_tid[i][0] == cid) 182 wil_vring_fini_tx(wil, i); 183 } 184 memset(&sta->stats, 0, sizeof(sta->stats)); 185 } 186 187 static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, 188 u16 reason_code, bool from_event) 189 { 190 int cid = -ENOENT; 191 struct net_device *ndev = wil_to_ndev(wil); 192 struct wireless_dev *wdev = wil->wdev; 193 194 might_sleep(); 195 wil_info(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid, 196 reason_code, from_event ? "+" : "-"); 197 198 /* Cases are: 199 * - disconnect single STA, still connected 200 * - disconnect single STA, already disconnected 201 * - disconnect all 202 * 203 * For "disconnect all", there are 3 options: 204 * - bssid == NULL 205 * - bssid is broadcast address (ff:ff:ff:ff:ff:ff) 206 * - bssid is our MAC address 207 */ 208 if (bssid && !is_broadcast_ether_addr(bssid) && 209 !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) { 210 cid = wil_find_cid(wil, bssid); 211 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", 212 bssid, cid, reason_code); 213 if (cid >= 0) /* disconnect 1 peer */ 214 wil_disconnect_cid(wil, cid, reason_code, from_event); 215 } else { /* all */ 216 wil_dbg_misc(wil, "Disconnect all\n"); 217 for (cid = 0; cid < WIL6210_MAX_CID; cid++) 218 wil_disconnect_cid(wil, cid, reason_code, from_event); 219 } 220 221 /* link state */ 222 switch (wdev->iftype) { 223 case NL80211_IFTYPE_STATION: 224 case NL80211_IFTYPE_P2P_CLIENT: 225 wil_bcast_fini(wil); 226 netif_tx_stop_all_queues(ndev); 227 netif_carrier_off(ndev); 228 229 if (test_bit(wil_status_fwconnected, wil->status)) { 230 clear_bit(wil_status_fwconnected, wil->status); 231 cfg80211_disconnected(ndev, reason_code, 232 NULL, 0, false, GFP_KERNEL); 233 } else if (test_bit(wil_status_fwconnecting, wil->status)) { 234 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 235 WLAN_STATUS_UNSPECIFIED_FAILURE, 236 GFP_KERNEL); 237 } 238 clear_bit(wil_status_fwconnecting, wil->status); 239 break; 240 default: 241 break; 242 } 243 } 244 245 static void wil_disconnect_worker(struct work_struct *work) 246 { 247 struct wil6210_priv *wil = container_of(work, 248 struct wil6210_priv, disconnect_worker); 249 250 mutex_lock(&wil->mutex); 251 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false); 252 mutex_unlock(&wil->mutex); 253 } 254 255 static void wil_connect_timer_fn(ulong x) 256 { 257 struct wil6210_priv *wil = (void *)x; 258 bool q; 259 260 wil_err(wil, "Connect timeout detected, disconnect station\n"); 261 262 /* reschedule to thread context - disconnect won't 263 * run from atomic context. 264 * queue on wmi_wq to prevent race with connect event. 265 */ 266 q = queue_work(wil->wmi_wq, &wil->disconnect_worker); 267 wil_dbg_wmi(wil, "queue_work of disconnect_worker -> %d\n", q); 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_tx_init(struct wil6210_priv *wil, int cid) 373 { 374 int rc = -EINVAL, ringid; 375 376 if (cid < 0) { 377 wil_err(wil, "No connection pending\n"); 378 goto out; 379 } 380 ringid = wil_find_free_vring(wil); 381 if (ringid < 0) { 382 wil_err(wil, "No free vring found\n"); 383 goto out; 384 } 385 386 wil_dbg_wmi(wil, "Configure for connection CID %d vring %d\n", 387 cid, ringid); 388 389 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); 390 if (rc) 391 wil_err(wil, "wil_vring_init_tx for CID %d vring %d failed\n", 392 cid, ringid); 393 394 out: 395 return rc; 396 } 397 398 int wil_bcast_init(struct wil6210_priv *wil) 399 { 400 int ri = wil->bcast_vring, rc; 401 402 if ((ri >= 0) && wil->vring_tx[ri].va) 403 return 0; 404 405 ri = wil_find_free_vring(wil); 406 if (ri < 0) 407 return ri; 408 409 wil->bcast_vring = ri; 410 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order); 411 if (rc) 412 wil->bcast_vring = -1; 413 414 return rc; 415 } 416 417 void wil_bcast_fini(struct wil6210_priv *wil) 418 { 419 int ri = wil->bcast_vring; 420 421 if (ri < 0) 422 return; 423 424 wil->bcast_vring = -1; 425 wil_vring_fini_tx(wil, ri); 426 } 427 428 int wil_priv_init(struct wil6210_priv *wil) 429 { 430 uint i; 431 432 wil_dbg_misc(wil, "%s()\n", __func__); 433 434 memset(wil->sta, 0, sizeof(wil->sta)); 435 for (i = 0; i < WIL6210_MAX_CID; i++) 436 spin_lock_init(&wil->sta[i].tid_rx_lock); 437 438 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) 439 spin_lock_init(&wil->vring_tx_data[i].lock); 440 441 mutex_init(&wil->mutex); 442 mutex_init(&wil->wmi_mutex); 443 mutex_init(&wil->back_rx_mutex); 444 mutex_init(&wil->back_tx_mutex); 445 mutex_init(&wil->probe_client_mutex); 446 447 init_completion(&wil->wmi_ready); 448 init_completion(&wil->wmi_call); 449 450 wil->bcast_vring = -1; 451 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 452 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 453 454 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 and prevent wmi commands */ 777 mutex_lock(&wil->wmi_mutex); 778 bitmap_zero(wil->status, wil_status_last); 779 mutex_unlock(&wil->wmi_mutex); 780 781 if (wil->scan_request) { 782 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 783 wil->scan_request); 784 del_timer_sync(&wil->scan_timer); 785 cfg80211_scan_done(wil->scan_request, true); 786 wil->scan_request = NULL; 787 } 788 789 wil_mask_irq(wil); 790 791 wmi_event_flush(wil); 792 793 flush_workqueue(wil->wq_service); 794 flush_workqueue(wil->wmi_wq); 795 796 wil_bl_crash_info(wil, false); 797 rc = wil_target_reset(wil); 798 wil_rx_fini(wil); 799 if (rc) { 800 wil_bl_crash_info(wil, true); 801 return rc; 802 } 803 804 rc = wil_get_bl_info(wil); 805 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */ 806 rc = 0; 807 if (rc) 808 return rc; 809 810 if (load_fw) { 811 wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME, 812 WIL_FW2_NAME); 813 814 wil_halt_cpu(wil); 815 /* Loading f/w from the file */ 816 rc = wil_request_firmware(wil, WIL_FW_NAME); 817 if (rc) 818 return rc; 819 rc = wil_request_firmware(wil, WIL_FW2_NAME); 820 if (rc) 821 return rc; 822 823 /* Mark FW as loaded from host */ 824 wil_s(wil, RGF_USER_USAGE_6, 1); 825 826 /* clear any interrupts which on-card-firmware 827 * may have set 828 */ 829 wil6210_clear_irq(wil); 830 /* CAF_ICR - clear and mask */ 831 /* it is W1C, clear by writing back same value */ 832 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); 833 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); 834 835 wil_release_cpu(wil); 836 } 837 838 /* init after reset */ 839 wil->ap_isolate = 0; 840 reinit_completion(&wil->wmi_ready); 841 reinit_completion(&wil->wmi_call); 842 843 if (load_fw) { 844 wil_configure_interrupt_moderation(wil); 845 wil_unmask_irq(wil); 846 847 /* we just started MAC, wait for FW ready */ 848 rc = wil_wait_for_fw_ready(wil); 849 if (rc == 0) /* check FW is responsive */ 850 rc = wmi_echo(wil); 851 } 852 853 return rc; 854 } 855 856 void wil_fw_error_recovery(struct wil6210_priv *wil) 857 { 858 wil_dbg_misc(wil, "starting fw error recovery\n"); 859 860 if (test_bit(wil_status_resetting, wil->status)) { 861 wil_info(wil, "Reset already in progress\n"); 862 return; 863 } 864 865 wil->recovery_state = fw_recovery_pending; 866 schedule_work(&wil->fw_error_worker); 867 } 868 869 int __wil_up(struct wil6210_priv *wil) 870 { 871 struct net_device *ndev = wil_to_ndev(wil); 872 struct wireless_dev *wdev = wil->wdev; 873 int rc; 874 875 WARN_ON(!mutex_is_locked(&wil->mutex)); 876 877 rc = wil_reset(wil, true); 878 if (rc) 879 return rc; 880 881 /* Rx VRING. After MAC and beacon */ 882 rc = wil_rx_init(wil, 1 << rx_ring_order); 883 if (rc) 884 return rc; 885 886 switch (wdev->iftype) { 887 case NL80211_IFTYPE_STATION: 888 wil_dbg_misc(wil, "type: STATION\n"); 889 ndev->type = ARPHRD_ETHER; 890 break; 891 case NL80211_IFTYPE_AP: 892 wil_dbg_misc(wil, "type: AP\n"); 893 ndev->type = ARPHRD_ETHER; 894 break; 895 case NL80211_IFTYPE_P2P_CLIENT: 896 wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 897 ndev->type = ARPHRD_ETHER; 898 break; 899 case NL80211_IFTYPE_P2P_GO: 900 wil_dbg_misc(wil, "type: P2P_GO\n"); 901 ndev->type = ARPHRD_ETHER; 902 break; 903 case NL80211_IFTYPE_MONITOR: 904 wil_dbg_misc(wil, "type: Monitor\n"); 905 ndev->type = ARPHRD_IEEE80211_RADIOTAP; 906 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 907 break; 908 default: 909 return -EOPNOTSUPP; 910 } 911 912 /* MAC address - pre-requisite for other commands */ 913 wmi_set_mac_address(wil, ndev->dev_addr); 914 915 wil_dbg_misc(wil, "NAPI enable\n"); 916 napi_enable(&wil->napi_rx); 917 napi_enable(&wil->napi_tx); 918 set_bit(wil_status_napi_en, wil->status); 919 920 if (wil->platform_ops.bus_request) 921 wil->platform_ops.bus_request(wil->platform_handle, 922 WIL_MAX_BUS_REQUEST_KBPS); 923 924 return 0; 925 } 926 927 int wil_up(struct wil6210_priv *wil) 928 { 929 int rc; 930 931 wil_dbg_misc(wil, "%s()\n", __func__); 932 933 mutex_lock(&wil->mutex); 934 rc = __wil_up(wil); 935 mutex_unlock(&wil->mutex); 936 937 return rc; 938 } 939 940 int __wil_down(struct wil6210_priv *wil) 941 { 942 int rc; 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)) { 967 968 mutex_unlock(&wil->mutex); 969 rc = wmi_call(wil, WMI_DISCONNECT_CMDID, NULL, 0, 970 WMI_DISCONNECT_EVENTID, NULL, 0, 971 WIL6210_DISCONNECT_TO_MS); 972 mutex_lock(&wil->mutex); 973 if (rc) 974 wil_err(wil, "timeout waiting for disconnect\n"); 975 } 976 977 wil_reset(wil, false); 978 979 return 0; 980 } 981 982 int wil_down(struct wil6210_priv *wil) 983 { 984 int rc; 985 986 wil_dbg_misc(wil, "%s()\n", __func__); 987 988 wil_set_recovery_state(wil, fw_recovery_idle); 989 mutex_lock(&wil->mutex); 990 rc = __wil_down(wil); 991 mutex_unlock(&wil->mutex); 992 993 return rc; 994 } 995 996 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 997 { 998 int i; 999 int rc = -ENOENT; 1000 1001 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 1002 if ((wil->sta[i].status != wil_sta_unused) && 1003 ether_addr_equal(wil->sta[i].addr, mac)) { 1004 rc = i; 1005 break; 1006 } 1007 } 1008 1009 return rc; 1010 } 1011