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wil6210: wait for disconnect completion
[deliverable/linux.git] / drivers / net / wireless / ath / wil6210 / main.c
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 }
Linux kernel - Deliverables
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